Merge tag 'char-misc-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver subsystem updates from Greg KH:
 "Here is the big set of char/misc and other driver subsystem updates
  for 6.10-rc1. Nothing major here, just lots of new drivers and updates
  for apis and new hardware types. Included in here are:

   - big IIO driver updates with more devices and drivers added

   - fpga driver updates

   - hyper-v driver updates

   - uio_pruss driver removal, no one uses it, other drivers control the
     same hardware now

   - binder minor updates

   - mhi driver updates

   - excon driver updates

   - counter driver updates

   - accessability driver updates

   - coresight driver updates

   - other hwtracing driver updates

   - nvmem driver updates

   - slimbus driver updates

   - spmi driver updates

   - other smaller misc and char driver updates

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (319 commits)
  misc: ntsync: mark driver as "broken" to prevent from building
  spmi: pmic-arb: Add multi bus support
  spmi: pmic-arb: Register controller for bus instead of arbiter
  spmi: pmic-arb: Make core resources acquiring a version operation
  spmi: pmic-arb: Make the APID init a version operation
  spmi: pmic-arb: Fix some compile warnings about members not being described
  dt-bindings: spmi: Deprecate qcom,bus-id
  dt-bindings: spmi: Add X1E80100 SPMI PMIC ARB schema
  spmi: pmic-arb: Replace three IS_ERR() calls by null pointer checks in spmi_pmic_arb_probe()
  spmi: hisi-spmi-controller: Do not override device identifier
  dt-bindings: spmi: hisilicon,hisi-spmi-controller: clean up example
  dt-bindings: spmi: hisilicon,hisi-spmi-controller: fix binding references
  spmi: make spmi_bus_type const
  extcon: adc-jack: Document missing struct members
  extcon: realtek: Remove unused of_gpio.h
  extcon: usbc-cros-ec: Convert to platform remove callback returning void
  extcon: usb-gpio: Convert to platform remove callback returning void
  extcon: max77843: Convert to platform remove callback returning void
  extcon: max3355: Convert to platform remove callback returning void
  extcon: intel-mrfld: Convert to platform remove callback returning void
  ...

90 files changed, 7126 insertions, 1520 deletions

diff --git a/drivers/iio/Makefile b/drivers/iio/Makefile
index 0ba0e1521ba4..cb80ef837e84 100644
--- a/drivers/iio/Makefile
+++ b/drivers/iio/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_IIO) += industrialio.o
 industrialio-y := industrialio-core.o industrialio-event.o inkern.o
 industrialio-$(CONFIG_IIO_BUFFER) += industrialio-buffer.o
 industrialio-$(CONFIG_IIO_TRIGGER) += industrialio-trigger.o
+industrialio-$(CONFIG_ACPI) += industrialio-acpi.o
 
 obj-$(CONFIG_IIO_CONFIGFS) += industrialio-configfs.o
 obj-$(CONFIG_IIO_GTS_HELPER) += industrialio-gts-helper.o
diff --git a/drivers/iio/accel/adxl345.h b/drivers/iio/accel/adxl345.h
index 284bd387ce69..3d5c8719db3d 100644
--- a/drivers/iio/accel/adxl345.h
+++ b/drivers/iio/accel/adxl345.h
@@ -8,6 +8,39 @@
 #ifndef _ADXL345_H_
 #define _ADXL345_H_
 
+#define ADXL345_REG_DEVID		0x00
+#define ADXL345_REG_OFSX		0x1E
+#define ADXL345_REG_OFSY		0x1F
+#define ADXL345_REG_OFSZ		0x20
+#define ADXL345_REG_OFS_AXIS(index)	(ADXL345_REG_OFSX + (index))
+#define ADXL345_REG_BW_RATE		0x2C
+#define ADXL345_REG_POWER_CTL		0x2D
+#define ADXL345_REG_DATA_FORMAT		0x31
+#define ADXL345_REG_DATAX0		0x32
+#define ADXL345_REG_DATAY0		0x34
+#define ADXL345_REG_DATAZ0		0x36
+#define ADXL345_REG_DATA_AXIS(index)	\
+	(ADXL345_REG_DATAX0 + (index) * sizeof(__le16))
+
+#define ADXL345_BW_RATE			GENMASK(3, 0)
+#define ADXL345_BASE_RATE_NANO_HZ	97656250LL
+
+#define ADXL345_POWER_CTL_MEASURE	BIT(3)
+#define ADXL345_POWER_CTL_STANDBY	0x00
+
+#define ADXL345_DATA_FORMAT_RANGE	GENMASK(1, 0)	/* Set the g range */
+#define ADXL345_DATA_FORMAT_JUSTIFY	BIT(2)	/* Left-justified (MSB) mode */
+#define ADXL345_DATA_FORMAT_FULL_RES	BIT(3)	/* Up to 13-bits resolution */
+#define ADXL345_DATA_FORMAT_SPI_3WIRE	BIT(6)	/* 3-wire SPI mode */
+#define ADXL345_DATA_FORMAT_SELF_TEST	BIT(7)	/* Enable a self test */
+
+#define ADXL345_DATA_FORMAT_2G		0
+#define ADXL345_DATA_FORMAT_4G		1
+#define ADXL345_DATA_FORMAT_8G		2
+#define ADXL345_DATA_FORMAT_16G		3
+
+#define ADXL345_DEVID			0xE5
+
 /*
  * In full-resolution mode, scale factor is maintained at ~4 mg/LSB
  * in all g ranges.
@@ -28,6 +61,7 @@ struct adxl345_chip_info {
 	int uscale;
 };
 
-int adxl345_core_probe(struct device *dev, struct regmap *regmap);
+int adxl345_core_probe(struct device *dev, struct regmap *regmap,
+		       int (*setup)(struct device*, struct regmap*));
 
 #endif /* _ADXL345_H_ */
diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c
index 8bd30a23ed3b..006ce66c0aa3 100644
--- a/drivers/iio/accel/adxl345_core.c
+++ b/drivers/iio/accel/adxl345_core.c
@@ -17,38 +17,9 @@
 
 #include "adxl345.h"
 
-#define ADXL345_REG_DEVID		0x00
-#define ADXL345_REG_OFSX		0x1e
-#define ADXL345_REG_OFSY		0x1f
-#define ADXL345_REG_OFSZ		0x20
-#define ADXL345_REG_OFS_AXIS(index)	(ADXL345_REG_OFSX + (index))
-#define ADXL345_REG_BW_RATE		0x2C
-#define ADXL345_REG_POWER_CTL		0x2D
-#define ADXL345_REG_DATA_FORMAT		0x31
-#define ADXL345_REG_DATAX0		0x32
-#define ADXL345_REG_DATAY0		0x34
-#define ADXL345_REG_DATAZ0		0x36
-#define ADXL345_REG_DATA_AXIS(index)	\
-	(ADXL345_REG_DATAX0 + (index) * sizeof(__le16))
-
-#define ADXL345_BW_RATE			GENMASK(3, 0)
-#define ADXL345_BASE_RATE_NANO_HZ	97656250LL
-
-#define ADXL345_POWER_CTL_MEASURE	BIT(3)
-#define ADXL345_POWER_CTL_STANDBY	0x00
-
-#define ADXL345_DATA_FORMAT_FULL_RES	BIT(3) /* Up to 13-bits resolution */
-#define ADXL345_DATA_FORMAT_2G		0
-#define ADXL345_DATA_FORMAT_4G		1
-#define ADXL345_DATA_FORMAT_8G		2
-#define ADXL345_DATA_FORMAT_16G		3
-
-#define ADXL345_DEVID			0xE5
-
 struct adxl345_data {
 	const struct adxl345_chip_info *info;
 	struct regmap *regmap;
-	u8 data_range;
 };
 
 #define ADXL345_CHANNEL(index, axis) {					\
@@ -197,44 +168,75 @@ static void adxl345_powerdown(void *regmap)
 	regmap_write(regmap, ADXL345_REG_POWER_CTL, ADXL345_POWER_CTL_STANDBY);
 }
 
-int adxl345_core_probe(struct device *dev, struct regmap *regmap)
+/**
+ * adxl345_core_probe() - probe and setup for the adxl345 accelerometer,
+ *                        also covers the adlx375 accelerometer
+ * @dev:	Driver model representation of the device
+ * @regmap:	Regmap instance for the device
+ * @setup:	Setup routine to be executed right before the standard device
+ *		setup
+ *
+ * Return: 0 on success, negative errno on error
+ */
+int adxl345_core_probe(struct device *dev, struct regmap *regmap,
+		       int (*setup)(struct device*, struct regmap*))
 {
 	struct adxl345_data *data;
 	struct iio_dev *indio_dev;
 	u32 regval;
+	unsigned int data_format_mask = (ADXL345_DATA_FORMAT_RANGE |
+					 ADXL345_DATA_FORMAT_JUSTIFY |
+					 ADXL345_DATA_FORMAT_FULL_RES |
+					 ADXL345_DATA_FORMAT_SELF_TEST);
 	int ret;
 
-	ret = regmap_read(regmap, ADXL345_REG_DEVID, &regval);
-	if (ret < 0)
-		return dev_err_probe(dev, ret, "Error reading device ID\n");
-
-	if (regval != ADXL345_DEVID)
-		return dev_err_probe(dev, -ENODEV, "Invalid device ID: %x, expected %x\n",
-				     regval, ADXL345_DEVID);
-
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
 	if (!indio_dev)
 		return -ENOMEM;
 
 	data = iio_priv(indio_dev);
 	data->regmap = regmap;
-	/* Enable full-resolution mode */
-	data->data_range = ADXL345_DATA_FORMAT_FULL_RES;
 	data->info = device_get_match_data(dev);
 	if (!data->info)
 		return -ENODEV;
 
-	ret = regmap_write(data->regmap, ADXL345_REG_DATA_FORMAT,
-			   data->data_range);
-	if (ret < 0)
-		return dev_err_probe(dev, ret, "Failed to set data range\n");
-
 	indio_dev->name = data->info->name;
 	indio_dev->info = &adxl345_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = adxl345_channels;
 	indio_dev->num_channels = ARRAY_SIZE(adxl345_channels);
 
+	if (setup) {
+		/* Perform optional initial bus specific configuration */
+		ret = setup(dev, data->regmap);
+		if (ret)
+			return ret;
+
+		/* Enable full-resolution mode */
+		ret = regmap_update_bits(data->regmap, ADXL345_REG_DATA_FORMAT,
+					 data_format_mask,
+					 ADXL345_DATA_FORMAT_FULL_RES);
+		if (ret)
+			return dev_err_probe(dev, ret,
+					     "Failed to set data range\n");
+
+	} else {
+		/* Enable full-resolution mode (init all data_format bits) */
+		ret = regmap_write(data->regmap, ADXL345_REG_DATA_FORMAT,
+				   ADXL345_DATA_FORMAT_FULL_RES);
+		if (ret)
+			return dev_err_probe(dev, ret,
+					     "Failed to set data range\n");
+	}
+
+	ret = regmap_read(data->regmap, ADXL345_REG_DEVID, &regval);
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Error reading device ID\n");
+
+	if (regval != ADXL345_DEVID)
+		return dev_err_probe(dev, -ENODEV, "Invalid device ID: %x, expected %x\n",
+				     regval, ADXL345_DEVID);
+
 	/* Enable measurement mode */
 	ret = adxl345_powerup(data->regmap);
 	if (ret < 0)
diff --git a/drivers/iio/accel/adxl345_i2c.c b/drivers/iio/accel/adxl345_i2c.c
index a3084b0a8f78..4065b8f7c8a8 100644
--- a/drivers/iio/accel/adxl345_i2c.c
+++ b/drivers/iio/accel/adxl345_i2c.c
@@ -27,7 +27,7 @@ static int adxl345_i2c_probe(struct i2c_client *client)
 	if (IS_ERR(regmap))
 		return dev_err_probe(&client->dev, PTR_ERR(regmap), "Error initializing regmap\n");
 
-	return adxl345_core_probe(&client->dev, regmap);
+	return adxl345_core_probe(&client->dev, regmap, NULL);
 }
 
 static const struct adxl345_chip_info adxl345_i2c_info = {
diff --git a/drivers/iio/accel/adxl345_spi.c b/drivers/iio/accel/adxl345_spi.c
index 93ca349f1780..57e16b441702 100644
--- a/drivers/iio/accel/adxl345_spi.c
+++ b/drivers/iio/accel/adxl345_spi.c
@@ -20,6 +20,11 @@ static const struct regmap_config adxl345_spi_regmap_config = {
 	.read_flag_mask = BIT(7) | BIT(6),
 };
 
+static int adxl345_spi_setup(struct device *dev, struct regmap *regmap)
+{
+	return regmap_write(regmap, ADXL345_REG_DATA_FORMAT, ADXL345_DATA_FORMAT_SPI_3WIRE);
+}
+
 static int adxl345_spi_probe(struct spi_device *spi)
 {
 	struct regmap *regmap;
@@ -33,7 +38,10 @@ static int adxl345_spi_probe(struct spi_device *spi)
 	if (IS_ERR(regmap))
 		return dev_err_probe(&spi->dev, PTR_ERR(regmap), "Error initializing regmap\n");
 
-	return adxl345_core_probe(&spi->dev, regmap);
+	if (spi->mode & SPI_3WIRE)
+		return adxl345_core_probe(&spi->dev, regmap, adxl345_spi_setup);
+	else
+		return adxl345_core_probe(&spi->dev, regmap, NULL);
 }
 
 static const struct adxl345_chip_info adxl345_spi_info = {
diff --git a/drivers/iio/accel/adxl367.c b/drivers/iio/accel/adxl367.c
index 210228affb80..5cf4828a5eb5 100644
--- a/drivers/iio/accel/adxl367.c
+++ b/drivers/iio/accel/adxl367.c
@@ -621,7 +621,7 @@ static int _adxl367_set_odr(struct adxl367_state *st, enum adxl367_odr odr)
 static int adxl367_set_odr(struct iio_dev *indio_dev, enum adxl367_odr odr)
 {
 	iio_device_claim_direct_scoped(return -EBUSY, indio_dev) {
-		struct adxl367_state *st = iio_priv(indio_dev);;
+		struct adxl367_state *st = iio_priv(indio_dev);
 		int ret;
 
 		guard(mutex)(&st->lock);
diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
index 110591804b4c..ae0cd48a3e29 100644
--- a/drivers/iio/accel/bmc150-accel-core.c
+++ b/drivers/iio/accel/bmc150-accel-core.c
@@ -386,13 +386,9 @@ static int bmc150_accel_set_power_state(struct bmc150_accel_data *data, bool on)
 static bool bmc150_apply_bosc0200_acpi_orientation(struct device *dev,
 						   struct iio_mount_matrix *orientation)
 {
-	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct acpi_device *adev = ACPI_COMPANION(dev);
-	char *name, *alt_name, *label, *str;
-	union acpi_object *obj, *elements;
-	acpi_status status;
-	int i, j, val[3];
+	char *name, *alt_name, *label;
 
 	if (strcmp(dev_name(dev), "i2c-BOSC0200:base") == 0) {
 		alt_name = "ROMK";
@@ -411,43 +407,7 @@ static bool bmc150_apply_bosc0200_acpi_orientation(struct device *dev,
 		return false;
 	}
 
-	status = acpi_evaluate_object(adev->handle, name, NULL, &buffer);
-	if (ACPI_FAILURE(status)) {
-		dev_warn(dev, "Failed to get ACPI mount matrix: %d\n", status);
-		return false;
-	}
-
-	obj = buffer.pointer;
-	if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 3)
-		goto unknown_format;
-
-	elements = obj->package.elements;
-	for (i = 0; i < 3; i++) {
-		if (elements[i].type != ACPI_TYPE_STRING)
-			goto unknown_format;
-
-		str = elements[i].string.pointer;
-		if (sscanf(str, "%d %d %d", &val[0], &val[1], &val[2]) != 3)
-			goto unknown_format;
-
-		for (j = 0; j < 3; j++) {
-			switch (val[j]) {
-			case -1: str = "-1"; break;
-			case 0:  str = "0";  break;
-			case 1:  str = "1";  break;
-			default: goto unknown_format;
-			}
-			orientation->rotation[i * 3 + j] = str;
-		}
-	}
-
-	kfree(buffer.pointer);
-	return true;
-
-unknown_format:
-	dev_warn(dev, "Unknown ACPI mount matrix format, ignoring\n");
-	kfree(buffer.pointer);
-	return false;
+	return iio_read_acpi_mount_matrix(dev, orientation, name);
 }
 
 static bool bmc150_apply_dual250e_acpi_orientation(struct device *dev,
diff --git a/drivers/iio/accel/fxls8962af-core.c b/drivers/iio/accel/fxls8962af-core.c
index be8a15cb945f..4fbc01bda62e 100644
--- a/drivers/iio/accel/fxls8962af-core.c
+++ b/drivers/iio/accel/fxls8962af-core.c
@@ -15,9 +15,11 @@
 #include <linux/bits.h>
 #include <linux/bitfield.h>
 #include <linux/i2c.h>
+#include <linux/irq.h>
 #include <linux/module.h>
-#include <linux/of_irq.h>
+#include <linux/mod_devicetable.h>
 #include <linux/pm_runtime.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/regmap.h>
 
@@ -1062,12 +1064,12 @@ static void fxls8962af_pm_disable(void *dev_ptr)
 	fxls8962af_standby(iio_priv(indio_dev));
 }
 
-static void fxls8962af_get_irq(struct device_node *of_node,
+static void fxls8962af_get_irq(struct device *dev,
 			       enum fxls8962af_int_pin *pin)
 {
 	int irq;
 
-	irq = of_irq_get_byname(of_node, "INT2");
+	irq = fwnode_irq_get_byname(dev_fwnode(dev), "INT2");
 	if (irq > 0) {
 		*pin = FXLS8962AF_PIN_INT2;
 		return;
@@ -1086,7 +1088,7 @@ static int fxls8962af_irq_setup(struct iio_dev *indio_dev, int irq)
 	u8 int_pin_sel;
 	int ret;
 
-	fxls8962af_get_irq(dev->of_node, &int_pin);
+	fxls8962af_get_irq(dev, &int_pin);
 	switch (int_pin) {
 	case FXLS8962AF_PIN_INT1:
 		int_pin_sel = FXLS8962AF_INT_PIN_SEL_INT1;
diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
index 126e8bdd6d0e..8280d2bef0a3 100644
--- a/drivers/iio/accel/kxcjk-1013.c
+++ b/drivers/iio/accel/kxcjk-1013.c
@@ -636,84 +636,6 @@ static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
 	return 0;
 }
 
-#ifdef CONFIG_ACPI
-static bool kxj_acpi_orientation(struct device *dev,
-				 struct iio_mount_matrix *orientation)
-{
-	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
-	struct acpi_device *adev = ACPI_COMPANION(dev);
-	char *str;
-	union acpi_object *obj, *elements;
-	acpi_status status;
-	int i, j, val[3];
-	bool ret = false;
-
-	if (!acpi_has_method(adev->handle, "ROTM"))
-		return false;
-
-	status = acpi_evaluate_object(adev->handle, "ROTM", NULL, &buffer);
-	if (ACPI_FAILURE(status)) {
-		dev_err(dev, "Failed to get ACPI mount matrix: %d\n", status);
-		return false;
-	}
-
-	obj = buffer.pointer;
-	if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 3) {
-		dev_err(dev, "Unknown ACPI mount matrix package format\n");
-		goto out_free_buffer;
-	}
-
-	elements = obj->package.elements;
-	for (i = 0; i < 3; i++) {
-		if (elements[i].type != ACPI_TYPE_STRING) {
-			dev_err(dev, "Unknown ACPI mount matrix element format\n");
-			goto out_free_buffer;
-		}
-
-		str = elements[i].string.pointer;
-		if (sscanf(str, "%d %d %d", &val[0], &val[1], &val[2]) != 3) {
-			dev_err(dev, "Incorrect ACPI mount matrix string format\n");
-			goto out_free_buffer;
-		}
-
-		for (j = 0; j < 3; j++) {
-			switch (val[j]) {
-			case -1: str = "-1"; break;
-			case 0:  str = "0";  break;
-			case 1:  str = "1";  break;
-			default:
-				dev_err(dev, "Invalid value in ACPI mount matrix: %d\n", val[j]);
-				goto out_free_buffer;
-			}
-			orientation->rotation[i * 3 + j] = str;
-		}
-	}
-
-	ret = true;
-
-out_free_buffer:
-	kfree(buffer.pointer);
-	return ret;
-}
-
-static bool kxj1009_apply_acpi_orientation(struct device *dev,
-					  struct iio_mount_matrix *orientation)
-{
-	struct acpi_device *adev = ACPI_COMPANION(dev);
-
-	if (adev && acpi_dev_hid_uid_match(adev, "KIOX000A", NULL))
-		return kxj_acpi_orientation(dev, orientation);
-
-	return false;
-}
-#else
-static bool kxj1009_apply_acpi_orientation(struct device *dev,
-					  struct iio_mount_matrix *orientation)
-{
-	return false;
-}
-#endif
-
 static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
 {
 	int ret;
@@ -1544,7 +1466,7 @@ static int kxcjk1013_probe(struct i2c_client *client)
 	} else {
 		data->active_high_intr = true; /* default polarity */
 
-		if (!kxj1009_apply_acpi_orientation(&client->dev, &data->orientation)) {
+		if (!iio_read_acpi_mount_matrix(&client->dev, &data->orientation, "ROTM")) {
 			ret = iio_read_mount_matrix(&client->dev, &data->orientation);
 			if (ret)
 				return ret;
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index d3fd0318e47b..62e6369e2269 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -19,6 +19,8 @@
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -28,8 +30,6 @@
 #include <linux/iio/triggered_buffer.h>
 #include <linux/iio/events.h>
 #include <linux/delay.h>
-#include <linux/of.h>
-#include <linux/of_irq.h>
 #include <linux/pm_runtime.h>
 #include <linux/regulator/consumer.h>
 
@@ -1642,7 +1642,7 @@ static int mma8452_probe(struct i2c_client *client)
 	if (client->irq) {
 		int irq2;
 
-		irq2 = of_irq_get_byname(client->dev.of_node, "INT2");
+		irq2 = fwnode_irq_get_byname(dev_fwnode(&client->dev), "INT2");
 
 		if (irq2 == client->irq) {
 			dev_dbg(&client->dev, "using interrupt line INT2\n");
diff --git a/drivers/iio/accel/mxc4005.c b/drivers/iio/accel/mxc4005.c
index 63c3566a533b..e56407b6f204 100644
--- a/drivers/iio/accel/mxc4005.c
+++ b/drivers/iio/accel/mxc4005.c
@@ -65,6 +65,7 @@ struct mxc4005_data {
 	struct mutex mutex;
 	struct regmap *regmap;
 	struct iio_trigger *dready_trig;
+	struct iio_mount_matrix orientation;
 	/* Ensure timestamp is naturally aligned */
 	struct {
 		__be16 chans[3];
@@ -272,6 +273,20 @@ static int mxc4005_write_raw(struct iio_dev *indio_dev,
 	}
 }
 
+static const struct iio_mount_matrix *
+mxc4005_get_mount_matrix(const struct iio_dev *indio_dev,
+			   const struct iio_chan_spec *chan)
+{
+	struct mxc4005_data *data = iio_priv(indio_dev);
+
+	return &data->orientation;
+}
+
+static const struct iio_chan_spec_ext_info mxc4005_ext_info[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_TYPE, mxc4005_get_mount_matrix),
+	{ }
+};
+
 static const struct iio_info mxc4005_info = {
 	.read_raw	= mxc4005_read_raw,
 	.write_raw	= mxc4005_write_raw,
@@ -298,6 +313,7 @@ static const unsigned long mxc4005_scan_masks[] = {
 		.shift = 4,					\
 		.endianness = IIO_BE,				\
 	},							\
+	.ext_info = mxc4005_ext_info,				\
 }
 
 static const struct iio_chan_spec mxc4005_channels[] = {
@@ -440,6 +456,12 @@ static int mxc4005_probe(struct i2c_client *client)
 
 	mutex_init(&data->mutex);
 
+	if (!iio_read_acpi_mount_matrix(&client->dev, &data->orientation, "ROTM")) {
+		ret = iio_read_mount_matrix(&client->dev, &data->orientation);
+		if (ret)
+			return ret;
+	}
+
 	indio_dev->channels = mxc4005_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mxc4005_channels);
 	indio_dev->available_scan_masks = mxc4005_scan_masks;
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 0d9282fa67f5..8db68b80b391 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -70,6 +70,23 @@ config AD7124
 	  To compile this driver as a module, choose M here: the module will be
 	  called ad7124.
 
+config AD7173
+	tristate "Analog Devices AD7173 driver"
+	depends on SPI_MASTER
+	select AD_SIGMA_DELTA
+	select GPIO_REGMAP if GPIOLIB
+	select REGMAP_SPI if GPIOLIB
+	help
+	  Say yes here to build support for Analog Devices AD7173 and similar ADC
+	  Currently supported models:
+	   - AD7172-2
+	   - AD7173-8
+	   - AD7175-2
+	   - AD7176-2
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called ad7173.
+
 config AD7192
 	tristate "Analog Devices AD7190 AD7192 AD7193 AD7195 ADC driver"
 	depends on SPI
@@ -264,6 +281,16 @@ config AD7923
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad7923.
 
+config AD7944
+	tristate "Analog Devices AD7944 and similar ADCs driver"
+	depends on SPI
+	help
+	  Say yes here to build support for Analog Devices
+	  AD7944, AD7985, AD7986 ADCs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7944
+
 config AD7949
 	tristate "Analog Devices AD7949 and similar ADCs driver"
 	depends on SPI
diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
index b3c434722364..edb32ce2af02 100644
--- a/drivers/iio/adc/Makefile
+++ b/drivers/iio/adc/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_AD7091R) += ad7091r-base.o
 obj-$(CONFIG_AD7091R5) += ad7091r5.o
 obj-$(CONFIG_AD7091R8) += ad7091r8.o
 obj-$(CONFIG_AD7124) += ad7124.o
+obj-$(CONFIG_AD7173) += ad7173.o
 obj-$(CONFIG_AD7192) += ad7192.o
 obj-$(CONFIG_AD7266) += ad7266.o
 obj-$(CONFIG_AD7280) += ad7280a.o
@@ -28,6 +29,7 @@ obj-$(CONFIG_AD7780) += ad7780.o
 obj-$(CONFIG_AD7791) += ad7791.o
 obj-$(CONFIG_AD7793) += ad7793.o
 obj-$(CONFIG_AD7887) += ad7887.o
+obj-$(CONFIG_AD7944) += ad7944.o
 obj-$(CONFIG_AD7949) += ad7949.o
 obj-$(CONFIG_AD799X) += ad799x.o
 obj-$(CONFIG_AD9467) += ad9467.o
diff --git a/drivers/iio/adc/ab8500-gpadc.c b/drivers/iio/adc/ab8500-gpadc.c
index 80645fee79a4..59f66e9cb0e8 100644
--- a/drivers/iio/adc/ab8500-gpadc.c
+++ b/drivers/iio/adc/ab8500-gpadc.c
@@ -1021,14 +1021,13 @@ static int ab8500_gpadc_parse_channel(struct device *dev,
 /**
  * ab8500_gpadc_parse_channels() - Parse the GPADC channels from DT
  * @gpadc: the GPADC to configure the channels for
- * @chans: the IIO channels we parsed
- * @nchans: the number of IIO channels we parsed
+ * @chans_parsed: the IIO channels we parsed
+ * @nchans_parsed: the number of IIO channels we parsed
  */
 static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
 				       struct iio_chan_spec **chans_parsed,
 				       unsigned int *nchans_parsed)
 {
-	struct fwnode_handle *child;
 	struct ab8500_gpadc_chan_info *ch;
 	struct iio_chan_spec *iio_chans;
 	unsigned int nchans;
@@ -1052,7 +1051,7 @@ static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
 		return -ENOMEM;
 
 	i = 0;
-	device_for_each_child_node(gpadc->dev, child) {
+	device_for_each_child_node_scoped(gpadc->dev, child) {
 		struct iio_chan_spec *iio_chan;
 		int ret;
 
@@ -1062,7 +1061,6 @@ static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
 		ret = ab8500_gpadc_parse_channel(gpadc->dev, child, ch,
 						 iio_chan);
 		if (ret) {
-			fwnode_handle_put(child);
 			return ret;
 		}
 		i++;
diff --git a/drivers/iio/adc/ad4130.c b/drivers/iio/adc/ad4130.c
index febb64e67955..aaf1fb0ac447 100644
--- a/drivers/iio/adc/ad4130.c
+++ b/drivers/iio/adc/ad4130.c
@@ -1600,17 +1600,14 @@ static int ad4130_parse_fw_children(struct iio_dev *indio_dev)
 {
 	struct ad4130_state *st = iio_priv(indio_dev);
 	struct device *dev = &st->spi->dev;
-	struct fwnode_handle *child;
 	int ret;
 
 	indio_dev->channels = st->chans;
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		ret = ad4130_parse_fw_channel(indio_dev, child);
-		if (ret) {
-			fwnode_handle_put(child);
+		if (ret)
 			return ret;
-		}
 	}
 
 	return 0;
diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c
index b9b206fcd748..e7b1d517d3de 100644
--- a/drivers/iio/adc/ad7124.c
+++ b/drivers/iio/adc/ad7124.c
@@ -14,7 +14,8 @@
 #include <linux/kernel.h>
 #include <linux/kfifo.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
 
@@ -807,22 +808,19 @@ static int ad7124_check_chip_id(struct ad7124_state *st)
 	return 0;
 }
 
-static int ad7124_of_parse_channel_config(struct iio_dev *indio_dev,
-					  struct device_node *np)
+static int ad7124_parse_channel_config(struct iio_dev *indio_dev,
+				       struct device *dev)
 {
 	struct ad7124_state *st = iio_priv(indio_dev);
 	struct ad7124_channel_config *cfg;
 	struct ad7124_channel *channels;
-	struct device_node *child;
 	struct iio_chan_spec *chan;
 	unsigned int ain[2], channel = 0, tmp;
 	int ret;
 
-	st->num_channels = of_get_available_child_count(np);
-	if (!st->num_channels) {
-		dev_err(indio_dev->dev.parent, "no channel children\n");
-		return -ENODEV;
-	}
+	st->num_channels = device_get_child_node_count(dev);
+	if (!st->num_channels)
+		return dev_err_probe(dev, -ENODEV, "no channel children\n");
 
 	chan = devm_kcalloc(indio_dev->dev.parent, st->num_channels,
 			    sizeof(*chan), GFP_KERNEL);
@@ -838,39 +836,38 @@ static int ad7124_of_parse_channel_config(struct iio_dev *indio_dev,
 	indio_dev->num_channels = st->num_channels;
 	st->channels = channels;
 
-	for_each_available_child_of_node(np, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		cfg = &st->channels[channel].cfg;
 
-		ret = of_property_read_u32(child, "reg", &channel);
+		ret = fwnode_property_read_u32(child, "reg", &channel);
 		if (ret)
-			goto err;
+			return ret;
 
-		if (channel >= indio_dev->num_channels) {
-			dev_err(indio_dev->dev.parent,
+		if (channel >= indio_dev->num_channels)
+			return dev_err_probe(dev, -EINVAL,
 				"Channel index >= number of channels\n");
-			ret = -EINVAL;
-			goto err;
-		}
 
-		ret = of_property_read_u32_array(child, "diff-channels",
-						 ain, 2);
+		ret = fwnode_property_read_u32_array(child, "diff-channels",
+						     ain, 2);
 		if (ret)
-			goto err;
+			return ret;
 
 		st->channels[channel].nr = channel;
 		st->channels[channel].ain = AD7124_CHANNEL_AINP(ain[0]) |
 						  AD7124_CHANNEL_AINM(ain[1]);
 
-		cfg->bipolar = of_property_read_bool(child, "bipolar");
+		cfg->bipolar = fwnode_property_read_bool(child, "bipolar");
 
-		ret = of_property_read_u32(child, "adi,reference-select", &tmp);
+		ret = fwnode_property_read_u32(child, "adi,reference-select", &tmp);
 		if (ret)
 			cfg->refsel = AD7124_INT_REF;
 		else
 			cfg->refsel = tmp;
 
-		cfg->buf_positive = of_property_read_bool(child, "adi,buffered-positive");
-		cfg->buf_negative = of_property_read_bool(child, "adi,buffered-negative");
+		cfg->buf_positive =
+			fwnode_property_read_bool(child, "adi,buffered-positive");
+		cfg->buf_negative =
+			fwnode_property_read_bool(child, "adi,buffered-negative");
 
 		chan[channel] = ad7124_channel_template;
 		chan[channel].address = channel;
@@ -880,10 +877,6 @@ static int ad7124_of_parse_channel_config(struct iio_dev *indio_dev,
 	}
 
 	return 0;
-err:
-	of_node_put(child);
-
-	return ret;
 }
 
 static int ad7124_setup(struct ad7124_state *st)
@@ -943,9 +936,7 @@ static int ad7124_probe(struct spi_device *spi)
 	struct iio_dev *indio_dev;
 	int i, ret;
 
-	info = of_device_get_match_data(&spi->dev);
-	if (!info)
-		info = (void *)spi_get_device_id(spi)->driver_data;
+	info = spi_get_device_match_data(spi);
 	if (!info)
 		return -ENODEV;
 
@@ -965,7 +956,7 @@ static int ad7124_probe(struct spi_device *spi)
 	if (ret < 0)
 		return ret;
 
-	ret = ad7124_of_parse_channel_config(indio_dev, spi->dev.of_node);
+	ret = ad7124_parse_channel_config(indio_dev, &spi->dev);
 	if (ret < 0)
 		return ret;
 
diff --git a/drivers/iio/adc/ad7173.c b/drivers/iio/adc/ad7173.c
new file mode 100644
index 000000000000..a7826bba0852
--- /dev/null
+++ b/drivers/iio/adc/ad7173.c
@@ -0,0 +1,1180 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * AD717x family SPI ADC driver
+ *
+ * Supported devices:
+ *  AD7172-2/AD7172-4/AD7173-8/AD7175-2
+ *  AD7175-8/AD7176-2/AD7177-2
+ *
+ * Copyright (C) 2015, 2024 Analog Devices, Inc.
+ */
+
+#include <linux/array_size.h>
+#include <linux/bitfield.h>
+#include <linux/bitmap.h>
+#include <linux/container_of.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/gpio/driver.h>
+#include <linux/gpio/regmap.h>
+#include <linux/idr.h>
+#include <linux/interrupt.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+#include <linux/types.h>
+#include <linux/units.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#include <linux/iio/adc/ad_sigma_delta.h>
+
+#define AD7173_REG_COMMS		0x00
+#define AD7173_REG_ADC_MODE		0x01
+#define AD7173_REG_INTERFACE_MODE	0x02
+#define AD7173_REG_CRC			0x03
+#define AD7173_REG_DATA			0x04
+#define AD7173_REG_GPIO			0x06
+#define AD7173_REG_ID			0x07
+#define AD7173_REG_CH(x)		(0x10 + (x))
+#define AD7173_REG_SETUP(x)		(0x20 + (x))
+#define AD7173_REG_FILTER(x)		(0x28 + (x))
+#define AD7173_REG_OFFSET(x)		(0x30 + (x))
+#define AD7173_REG_GAIN(x)		(0x38 + (x))
+
+#define AD7173_RESET_LENGTH		BITS_TO_BYTES(64)
+
+#define AD7173_CH_ENABLE		BIT(15)
+#define AD7173_CH_SETUP_SEL_MASK	GENMASK(14, 12)
+#define AD7173_CH_SETUP_AINPOS_MASK	GENMASK(9, 5)
+#define AD7173_CH_SETUP_AINNEG_MASK	GENMASK(4, 0)
+
+#define AD7173_CH_ADDRESS(pos, neg) \
+	(FIELD_PREP(AD7173_CH_SETUP_AINPOS_MASK, pos) | \
+	 FIELD_PREP(AD7173_CH_SETUP_AINNEG_MASK, neg))
+#define AD7173_AIN_TEMP_POS	17
+#define AD7173_AIN_TEMP_NEG	18
+
+#define AD7172_2_ID			0x00d0
+#define AD7175_ID			0x0cd0
+#define AD7176_ID			0x0c90
+#define AD7175_2_ID			0x0cd0
+#define AD7172_4_ID			0x2050
+#define AD7173_ID			0x30d0
+#define AD7175_8_ID			0x3cd0
+#define AD7177_ID			0x4fd0
+#define AD7173_ID_MASK			GENMASK(15, 4)
+
+#define AD7173_ADC_MODE_REF_EN		BIT(15)
+#define AD7173_ADC_MODE_SING_CYC	BIT(13)
+#define AD7173_ADC_MODE_MODE_MASK	GENMASK(6, 4)
+#define AD7173_ADC_MODE_CLOCKSEL_MASK	GENMASK(3, 2)
+#define AD7173_ADC_MODE_CLOCKSEL_INT		0x0
+#define AD7173_ADC_MODE_CLOCKSEL_INT_OUTPUT	0x1
+#define AD7173_ADC_MODE_CLOCKSEL_EXT		0x2
+#define AD7173_ADC_MODE_CLOCKSEL_XTAL		0x3
+
+#define AD7173_GPIO_PDSW	BIT(14)
+#define AD7173_GPIO_OP_EN2_3	BIT(13)
+#define AD7173_GPIO_MUX_IO	BIT(12)
+#define AD7173_GPIO_SYNC_EN	BIT(11)
+#define AD7173_GPIO_ERR_EN	BIT(10)
+#define AD7173_GPIO_ERR_DAT	BIT(9)
+#define AD7173_GPIO_GP_DATA3	BIT(7)
+#define AD7173_GPIO_GP_DATA2	BIT(6)
+#define AD7173_GPIO_IP_EN1	BIT(5)
+#define AD7173_GPIO_IP_EN0	BIT(4)
+#define AD7173_GPIO_OP_EN1	BIT(3)
+#define AD7173_GPIO_OP_EN0	BIT(2)
+#define AD7173_GPIO_GP_DATA1	BIT(1)
+#define AD7173_GPIO_GP_DATA0	BIT(0)
+
+#define AD7173_GPO12_DATA(x)	BIT((x) + 0)
+#define AD7173_GPO23_DATA(x)	BIT((x) + 4)
+#define AD7173_GPO_DATA(x)	((x) < 2 ? AD7173_GPO12_DATA(x) : AD7173_GPO23_DATA(x))
+
+#define AD7173_INTERFACE_DATA_STAT	BIT(6)
+#define AD7173_INTERFACE_DATA_STAT_EN(x) \
+	FIELD_PREP(AD7173_INTERFACE_DATA_STAT, x)
+
+#define AD7173_SETUP_BIPOLAR		BIT(12)
+#define AD7173_SETUP_AREF_BUF_MASK	GENMASK(11, 10)
+#define AD7173_SETUP_AIN_BUF_MASK	GENMASK(9, 8)
+
+#define AD7173_SETUP_REF_SEL_MASK	GENMASK(5, 4)
+#define AD7173_SETUP_REF_SEL_AVDD1_AVSS	0x3
+#define AD7173_SETUP_REF_SEL_INT_REF	0x2
+#define AD7173_SETUP_REF_SEL_EXT_REF2	0x1
+#define AD7173_SETUP_REF_SEL_EXT_REF	0x0
+#define AD7173_VOLTAGE_INT_REF_uV	2500000
+#define AD7173_TEMP_SENSIIVITY_uV_per_C	477
+#define AD7177_ODR_START_VALUE		0x07
+
+#define AD7173_FILTER_ODR0_MASK		GENMASK(5, 0)
+#define AD7173_MAX_CONFIGS		8
+
+enum ad7173_ids {
+	ID_AD7172_2,
+	ID_AD7172_4,
+	ID_AD7173_8,
+	ID_AD7175_2,
+	ID_AD7175_8,
+	ID_AD7176_2,
+	ID_AD7177_2,
+};
+
+struct ad7173_device_info {
+	const unsigned int *sinc5_data_rates;
+	unsigned int num_sinc5_data_rates;
+	unsigned int odr_start_value;
+	unsigned int num_channels;
+	unsigned int num_configs;
+	unsigned int num_inputs;
+	unsigned int clock;
+	unsigned int id;
+	char *name;
+	bool has_temp;
+	bool has_int_ref;
+	bool has_ref2;
+	u8 num_gpios;
+};
+
+struct ad7173_channel_config {
+	u8 cfg_slot;
+	bool live;
+
+	/* Following fields are used to compare equality. */
+	struct_group(config_props,
+		bool bipolar;
+		bool input_buf;
+		u8 odr;
+		u8 ref_sel;
+	);
+};
+
+struct ad7173_channel {
+	unsigned int chan_reg;
+	unsigned int ain;
+	struct ad7173_channel_config cfg;
+};
+
+struct ad7173_state {
+	struct ad_sigma_delta sd;
+	const struct ad7173_device_info *info;
+	struct ad7173_channel *channels;
+	struct regulator_bulk_data regulators[3];
+	unsigned int adc_mode;
+	unsigned int interface_mode;
+	unsigned int num_channels;
+	struct ida cfg_slots_status;
+	unsigned long long config_usage_counter;
+	unsigned long long *config_cnts;
+	struct clk *ext_clk;
+	struct clk_hw int_clk_hw;
+#if IS_ENABLED(CONFIG_GPIOLIB)
+	struct regmap *reg_gpiocon_regmap;
+	struct gpio_regmap *gpio_regmap;
+#endif
+};
+
+static const unsigned int ad7173_sinc5_data_rates[] = {
+	6211000, 6211000, 6211000, 6211000, 6211000, 6211000, 5181000, 4444000,	/*  0-7  */
+	3115000, 2597000, 1007000, 503800,  381000,  200300,  100500,  59520,	/*  8-15 */
+	49680,	 20010,	  16333,   10000,   5000,    2500,    1250,		/* 16-22 */
+};
+
+static const unsigned int ad7175_sinc5_data_rates[] = {
+	50000000, 41667000, 31250000, 27778000,	/*  0-3  */
+	20833000, 17857000, 12500000, 10000000,	/*  4-7  */
+	5000000,  2500000,  1000000,  500000,	/*  8-11 */
+	397500,   200000,   100000,   59920,	/* 12-15 */
+	49960,    20000,    16666,    10000,	/* 16-19 */
+	5000,					/* 20    */
+};
+
+static const struct ad7173_device_info ad7173_device_info[] = {
+	[ID_AD7172_2] = {
+		.name = "ad7172-2",
+		.id = AD7172_2_ID,
+		.num_inputs = 5,
+		.num_channels = 4,
+		.num_configs = 4,
+		.num_gpios = 2,
+		.has_temp = true,
+		.has_int_ref = true,
+		.clock = 2 * HZ_PER_MHZ,
+		.sinc5_data_rates = ad7173_sinc5_data_rates,
+		.num_sinc5_data_rates = ARRAY_SIZE(ad7173_sinc5_data_rates),
+	},
+	[ID_AD7172_4] = {
+		.id = AD7172_4_ID,
+		.num_inputs = 9,
+		.num_channels = 8,
+		.num_configs = 8,
+		.num_gpios = 4,
+		.has_temp = false,
+		.has_ref2 = true,
+		.clock = 2 * HZ_PER_MHZ,
+		.sinc5_data_rates = ad7173_sinc5_data_rates,
+		.num_sinc5_data_rates = ARRAY_SIZE(ad7173_sinc5_data_rates),
+	},
+	[ID_AD7173_8] = {
+		.name = "ad7173-8",
+		.id = AD7173_ID,
+		.num_inputs = 17,
+		.num_channels = 16,
+		.num_configs = 8,
+		.num_gpios = 4,
+		.has_temp = true,
+		.has_int_ref = true,
+		.has_ref2 = true,
+		.clock = 2 * HZ_PER_MHZ,
+		.sinc5_data_rates = ad7173_sinc5_data_rates,
+		.num_sinc5_data_rates = ARRAY_SIZE(ad7173_sinc5_data_rates),
+	},
+	[ID_AD7175_2] = {
+		.name = "ad7175-2",
+		.id = AD7175_2_ID,
+		.num_inputs = 5,
+		.num_channels = 4,
+		.num_configs = 4,
+		.num_gpios = 2,
+		.has_temp = true,
+		.has_int_ref = true,
+		.clock = 16 * HZ_PER_MHZ,
+		.sinc5_data_rates = ad7175_sinc5_data_rates,
+		.num_sinc5_data_rates = ARRAY_SIZE(ad7175_sinc5_data_rates),
+	},
+	[ID_AD7175_8] = {
+		.id = AD7175_8_ID,
+		.num_inputs = 17,
+		.num_channels = 16,
+		.num_configs = 8,
+		.num_gpios = 4,
+		.has_temp = true,
+		.has_int_ref = true,
+		.has_ref2 = true,
+		.clock = 16 * HZ_PER_MHZ,
+		.sinc5_data_rates = ad7175_sinc5_data_rates,
+		.num_sinc5_data_rates = ARRAY_SIZE(ad7175_sinc5_data_rates),
+	},
+	[ID_AD7176_2] = {
+		.name = "ad7176-2",
+		.id = AD7176_ID,
+		.num_inputs = 5,
+		.num_channels = 4,
+		.num_configs = 4,
+		.num_gpios = 2,
+		.has_temp = false,
+		.has_int_ref = true,
+		.clock = 16 * HZ_PER_MHZ,
+		.sinc5_data_rates = ad7175_sinc5_data_rates,
+		.num_sinc5_data_rates = ARRAY_SIZE(ad7175_sinc5_data_rates),
+	},
+	[ID_AD7177_2] = {
+		.id = AD7177_ID,
+		.num_inputs = 5,
+		.num_channels = 4,
+		.num_configs = 4,
+		.num_gpios = 2,
+		.has_temp = true,
+		.has_int_ref = true,
+		.clock = 16 * HZ_PER_MHZ,
+		.odr_start_value = AD7177_ODR_START_VALUE,
+		.sinc5_data_rates = ad7175_sinc5_data_rates,
+		.num_sinc5_data_rates = ARRAY_SIZE(ad7175_sinc5_data_rates),
+	},
+};
+
+static const char *const ad7173_ref_sel_str[] = {
+	[AD7173_SETUP_REF_SEL_EXT_REF]    = "vref",
+	[AD7173_SETUP_REF_SEL_EXT_REF2]   = "vref2",
+	[AD7173_SETUP_REF_SEL_INT_REF]    = "refout-avss",
+	[AD7173_SETUP_REF_SEL_AVDD1_AVSS] = "avdd",
+};
+
+static const char *const ad7173_clk_sel[] = {
+	"ext-clk", "xtal"
+};
+
+#if IS_ENABLED(CONFIG_GPIOLIB)
+
+static const struct regmap_range ad7173_range_gpio[] = {
+	regmap_reg_range(AD7173_REG_GPIO, AD7173_REG_GPIO),
+};
+
+static const struct regmap_access_table ad7173_access_table = {
+	.yes_ranges = ad7173_range_gpio,
+	.n_yes_ranges = ARRAY_SIZE(ad7173_range_gpio),
+};
+
+static const struct regmap_config ad7173_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.rd_table = &ad7173_access_table,
+	.wr_table = &ad7173_access_table,
+	.read_flag_mask = BIT(6),
+};
+
+static int ad7173_mask_xlate(struct gpio_regmap *gpio, unsigned int base,
+			     unsigned int offset, unsigned int *reg,
+			     unsigned int *mask)
+{
+	*mask = AD7173_GPO_DATA(offset);
+	*reg = base;
+	return 0;
+}
+
+static void ad7173_gpio_disable(void *data)
+{
+	struct ad7173_state *st = data;
+	unsigned int mask;
+
+	mask = AD7173_GPIO_OP_EN0 | AD7173_GPIO_OP_EN1 | AD7173_GPIO_OP_EN2_3;
+	regmap_update_bits(st->reg_gpiocon_regmap, AD7173_REG_GPIO, mask, ~mask);
+}
+
+static int ad7173_gpio_init(struct ad7173_state *st)
+{
+	struct gpio_regmap_config gpio_regmap = {};
+	struct device *dev = &st->sd.spi->dev;
+	unsigned int mask;
+	int ret;
+
+	st->reg_gpiocon_regmap = devm_regmap_init_spi(st->sd.spi, &ad7173_regmap_config);
+	ret = PTR_ERR_OR_ZERO(st->reg_gpiocon_regmap);
+	if (ret)
+		return dev_err_probe(dev, ret, "Unable to init regmap\n");
+
+	mask = AD7173_GPIO_OP_EN0 | AD7173_GPIO_OP_EN1 | AD7173_GPIO_OP_EN2_3;
+	regmap_update_bits(st->reg_gpiocon_regmap, AD7173_REG_GPIO, mask, mask);
+
+	ret = devm_add_action_or_reset(dev, ad7173_gpio_disable, st);
+	if (ret)
+		return ret;
+
+	gpio_regmap.parent = dev;
+	gpio_regmap.regmap = st->reg_gpiocon_regmap;
+	gpio_regmap.ngpio = st->info->num_gpios;
+	gpio_regmap.reg_set_base = AD7173_REG_GPIO;
+	gpio_regmap.reg_mask_xlate = ad7173_mask_xlate;
+
+	st->gpio_regmap = devm_gpio_regmap_register(dev, &gpio_regmap);
+	ret = PTR_ERR_OR_ZERO(st->gpio_regmap);
+	if (ret)
+		return dev_err_probe(dev, ret, "Unable to init gpio-regmap\n");
+
+	return 0;
+}
+#else
+static int ad7173_gpio_init(struct ad7173_state *st)
+{
+	return 0;
+}
+#endif /* CONFIG_GPIOLIB */
+
+static struct ad7173_state *ad_sigma_delta_to_ad7173(struct ad_sigma_delta *sd)
+{
+	return container_of(sd, struct ad7173_state, sd);
+}
+
+static struct ad7173_state *clk_hw_to_ad7173(struct clk_hw *hw)
+{
+	return container_of(hw, struct ad7173_state, int_clk_hw);
+}
+
+static void ad7173_ida_destroy(void *data)
+{
+	struct ad7173_state *st = data;
+
+	ida_destroy(&st->cfg_slots_status);
+}
+
+static void ad7173_reset_usage_cnts(struct ad7173_state *st)
+{
+	memset64(st->config_cnts, 0, st->info->num_configs);
+	st->config_usage_counter = 0;
+}
+
+static struct ad7173_channel_config *
+ad7173_find_live_config(struct ad7173_state *st, struct ad7173_channel_config *cfg)
+{
+	struct ad7173_channel_config *cfg_aux;
+	ptrdiff_t cmp_size;
+	int i;
+
+	cmp_size = sizeof_field(struct ad7173_channel_config, config_props);
+	for (i = 0; i < st->num_channels; i++) {
+		cfg_aux = &st->channels[i].cfg;
+
+		if (cfg_aux->live &&
+		    !memcmp(&cfg->config_props, &cfg_aux->config_props, cmp_size))
+			return cfg_aux;
+	}
+	return NULL;
+}
+
+/* Could be replaced with a generic LRU implementation */
+static int ad7173_free_config_slot_lru(struct ad7173_state *st)
+{
+	int i, lru_position = 0;
+
+	for (i = 1; i < st->info->num_configs; i++)
+		if (st->config_cnts[i] < st->config_cnts[lru_position])
+			lru_position = i;
+
+	for (i = 0; i < st->num_channels; i++)
+		if (st->channels[i].cfg.cfg_slot == lru_position)
+			st->channels[i].cfg.live = false;
+
+	ida_free(&st->cfg_slots_status, lru_position);
+	return ida_alloc(&st->cfg_slots_status, GFP_KERNEL);
+}
+
+/* Could be replaced with a generic LRU implementation */
+static int ad7173_load_config(struct ad7173_state *st,
+			      struct ad7173_channel_config *cfg)
+{
+	unsigned int config;
+	int free_cfg_slot, ret;
+
+	free_cfg_slot = ida_alloc_range(&st->cfg_slots_status, 0,
+					st->info->num_configs - 1, GFP_KERNEL);
+	if (free_cfg_slot < 0)
+		free_cfg_slot = ad7173_free_config_slot_lru(st);
+
+	cfg->cfg_slot = free_cfg_slot;
+	config = FIELD_PREP(AD7173_SETUP_REF_SEL_MASK, cfg->ref_sel);
+
+	if (cfg->bipolar)
+		config |= AD7173_SETUP_BIPOLAR;
+
+	if (cfg->input_buf)
+		config |= AD7173_SETUP_AIN_BUF_MASK;
+
+	ret = ad_sd_write_reg(&st->sd, AD7173_REG_SETUP(free_cfg_slot), 2, config);
+	if (ret)
+		return ret;
+
+	return ad_sd_write_reg(&st->sd, AD7173_REG_FILTER(free_cfg_slot), 2,
+			       AD7173_FILTER_ODR0_MASK & cfg->odr);
+}
+
+static int ad7173_config_channel(struct ad7173_state *st, int addr)
+{
+	struct ad7173_channel_config *cfg = &st->channels[addr].cfg;
+	struct ad7173_channel_config *live_cfg;
+	int ret;
+
+	if (!cfg->live) {
+		live_cfg = ad7173_find_live_config(st, cfg);
+		if (live_cfg) {
+			cfg->cfg_slot = live_cfg->cfg_slot;
+		} else {
+			ret = ad7173_load_config(st, cfg);
+			if (ret)
+				return ret;
+			cfg->live = true;
+		}
+	}
+
+	if (st->config_usage_counter == U64_MAX)
+		ad7173_reset_usage_cnts(st);
+
+	st->config_usage_counter++;
+	st->config_cnts[cfg->cfg_slot] = st->config_usage_counter;
+
+	return 0;
+}
+
+static int ad7173_set_channel(struct ad_sigma_delta *sd, unsigned int channel)
+{
+	struct ad7173_state *st = ad_sigma_delta_to_ad7173(sd);
+	unsigned int val;
+	int ret;
+
+	ret = ad7173_config_channel(st, channel);
+	if (ret)
+		return ret;
+
+	val = AD7173_CH_ENABLE |
+	      FIELD_PREP(AD7173_CH_SETUP_SEL_MASK, st->channels[channel].cfg.cfg_slot) |
+	      st->channels[channel].ain;
+
+	return ad_sd_write_reg(&st->sd, AD7173_REG_CH(channel), 2, val);
+}
+
+static int ad7173_set_mode(struct ad_sigma_delta *sd,
+			   enum ad_sigma_delta_mode mode)
+{
+	struct ad7173_state *st = ad_sigma_delta_to_ad7173(sd);
+
+	st->adc_mode &= ~AD7173_ADC_MODE_MODE_MASK;
+	st->adc_mode |= FIELD_PREP(AD7173_ADC_MODE_MODE_MASK, mode);
+
+	return ad_sd_write_reg(&st->sd, AD7173_REG_ADC_MODE, 2, st->adc_mode);
+}
+
+static int ad7173_append_status(struct ad_sigma_delta *sd, bool append)
+{
+	struct ad7173_state *st = ad_sigma_delta_to_ad7173(sd);
+	unsigned int interface_mode = st->interface_mode;
+	int ret;
+
+	interface_mode |= AD7173_INTERFACE_DATA_STAT_EN(append);
+	ret = ad_sd_write_reg(&st->sd, AD7173_REG_INTERFACE_MODE, 2, interface_mode);
+	if (ret)
+		return ret;
+
+	st->interface_mode = interface_mode;
+
+	return 0;
+}
+
+static int ad7173_disable_all(struct ad_sigma_delta *sd)
+{
+	struct ad7173_state *st = ad_sigma_delta_to_ad7173(sd);
+	int ret;
+	int i;
+
+	for (i = 0; i < st->num_channels; i++) {
+		ret = ad_sd_write_reg(sd, AD7173_REG_CH(i), 2, 0);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static struct ad_sigma_delta_info ad7173_sigma_delta_info = {
+	.set_channel = ad7173_set_channel,
+	.append_status = ad7173_append_status,
+	.disable_all = ad7173_disable_all,
+	.set_mode = ad7173_set_mode,
+	.has_registers = true,
+	.addr_shift = 0,
+	.read_mask = BIT(6),
+	.status_ch_mask = GENMASK(3, 0),
+	.data_reg = AD7173_REG_DATA,
+};
+
+static int ad7173_setup(struct iio_dev *indio_dev)
+{
+	struct ad7173_state *st = iio_priv(indio_dev);
+	struct device *dev = &st->sd.spi->dev;
+	u8 buf[AD7173_RESET_LENGTH];
+	unsigned int id;
+	int ret;
+
+	/* reset the serial interface */
+	memset(buf, 0xff, AD7173_RESET_LENGTH);
+	ret = spi_write_then_read(st->sd.spi, buf, sizeof(buf), NULL, 0);
+	if (ret < 0)
+		return ret;
+
+	/* datasheet recommends a delay of at least 500us after reset */
+	fsleep(500);
+
+	ret = ad_sd_read_reg(&st->sd, AD7173_REG_ID, 2, &id);
+	if (ret)
+		return ret;
+
+	id &= AD7173_ID_MASK;
+	if (id != st->info->id)
+		dev_warn(dev, "Unexpected device id: 0x%04X, expected: 0x%04X\n",
+			 id, st->info->id);
+
+	st->adc_mode |= AD7173_ADC_MODE_SING_CYC;
+	st->interface_mode = 0x0;
+
+	st->config_usage_counter = 0;
+	st->config_cnts = devm_kcalloc(dev, st->info->num_configs,
+				       sizeof(*st->config_cnts), GFP_KERNEL);
+	if (!st->config_cnts)
+		return -ENOMEM;
+
+	/* All channels are enabled by default after a reset */
+	return ad7173_disable_all(&st->sd);
+}
+
+static unsigned int ad7173_get_ref_voltage_milli(struct ad7173_state *st,
+						 u8 reference_select)
+{
+	int vref;
+
+	switch (reference_select) {
+	case AD7173_SETUP_REF_SEL_EXT_REF:
+		vref = regulator_get_voltage(st->regulators[0].consumer);
+		break;
+
+	case AD7173_SETUP_REF_SEL_EXT_REF2:
+		vref = regulator_get_voltage(st->regulators[1].consumer);
+		break;
+
+	case AD7173_SETUP_REF_SEL_INT_REF:
+		vref = AD7173_VOLTAGE_INT_REF_uV;
+		break;
+
+	case AD7173_SETUP_REF_SEL_AVDD1_AVSS:
+		vref = regulator_get_voltage(st->regulators[2].consumer);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	if (vref < 0)
+		return vref;
+
+	return vref / (MICRO / MILLI);
+}
+
+static int ad7173_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val, int *val2, long info)
+{
+	struct ad7173_state *st = iio_priv(indio_dev);
+	struct ad7173_channel *ch = &st->channels[chan->address];
+	unsigned int reg;
+	u64 temp;
+	int ret;
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		ret = ad_sigma_delta_single_conversion(indio_dev, chan, val);
+		if (ret < 0)
+			return ret;
+
+		/* disable channel after single conversion */
+		ret = ad_sd_write_reg(&st->sd, AD7173_REG_CH(chan->address), 2, 0);
+		if (ret < 0)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		if (chan->type == IIO_TEMP) {
+			temp = AD7173_VOLTAGE_INT_REF_uV * MILLI;
+			temp /= AD7173_TEMP_SENSIIVITY_uV_per_C;
+			*val = temp;
+			*val2 = chan->scan_type.realbits;
+		} else {
+			*val = ad7173_get_ref_voltage_milli(st, ch->cfg.ref_sel);
+			*val2 = chan->scan_type.realbits - !!(ch->cfg.bipolar);
+		}
+		return IIO_VAL_FRACTIONAL_LOG2;
+	case IIO_CHAN_INFO_OFFSET:
+		if (chan->type == IIO_TEMP) {
+			/* 0 Kelvin -> raw sample */
+			temp   = -ABSOLUTE_ZERO_MILLICELSIUS;
+			temp  *= AD7173_TEMP_SENSIIVITY_uV_per_C;
+			temp <<= chan->scan_type.realbits;
+			temp   = DIV_U64_ROUND_CLOSEST(temp,
+						       AD7173_VOLTAGE_INT_REF_uV *
+						       MILLI);
+			*val   = -temp;
+		} else {
+			*val = -BIT(chan->scan_type.realbits - 1);
+		}
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		reg = st->channels[chan->address].cfg.odr;
+
+		*val = st->info->sinc5_data_rates[reg] / MILLI;
+		*val2 = (st->info->sinc5_data_rates[reg] % MILLI) * (MICRO / MILLI);
+
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad7173_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int val, int val2, long info)
+{
+	struct ad7173_state *st = iio_priv(indio_dev);
+	struct ad7173_channel_config *cfg;
+	unsigned int freq, i, reg;
+	int ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	switch (info) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		freq = val * MILLI + val2 / MILLI;
+		for (i = st->info->odr_start_value; i < st->info->num_sinc5_data_rates - 1; i++)
+			if (freq >= st->info->sinc5_data_rates[i])
+				break;
+
+		cfg = &st->channels[chan->address].cfg;
+		cfg->odr = i;
+
+		if (!cfg->live)
+			break;
+
+		ret = ad_sd_read_reg(&st->sd, AD7173_REG_FILTER(cfg->cfg_slot), 2, &reg);
+		if (ret)
+			break;
+		reg &= ~AD7173_FILTER_ODR0_MASK;
+		reg |= FIELD_PREP(AD7173_FILTER_ODR0_MASK, i);
+		ret = ad_sd_write_reg(&st->sd, AD7173_REG_FILTER(cfg->cfg_slot), 2, reg);
+		break;
+
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	iio_device_release_direct_mode(indio_dev);
+	return ret;
+}
+
+static int ad7173_update_scan_mode(struct iio_dev *indio_dev,
+				   const unsigned long *scan_mask)
+{
+	struct ad7173_state *st = iio_priv(indio_dev);
+	int i, ret;
+
+	for (i = 0; i < indio_dev->num_channels; i++) {
+		if (test_bit(i, scan_mask))
+			ret = ad7173_set_channel(&st->sd, i);
+		else
+			ret = ad_sd_write_reg(&st->sd, AD7173_REG_CH(i), 2, 0);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int ad7173_debug_reg_access(struct iio_dev *indio_dev, unsigned int reg,
+				   unsigned int writeval, unsigned int *readval)
+{
+	struct ad7173_state *st = iio_priv(indio_dev);
+	u8 reg_size;
+
+	if (reg == AD7173_REG_COMMS)
+		reg_size = 1;
+	else if (reg == AD7173_REG_CRC || reg == AD7173_REG_DATA ||
+		 reg >= AD7173_REG_OFFSET(0))
+		reg_size = 3;
+	else
+		reg_size = 2;
+
+	if (readval)
+		return ad_sd_read_reg(&st->sd, reg, reg_size, readval);
+
+	return ad_sd_write_reg(&st->sd, reg, reg_size, writeval);
+}
+
+static const struct iio_info ad7173_info = {
+	.read_raw = &ad7173_read_raw,
+	.write_raw = &ad7173_write_raw,
+	.debugfs_reg_access = &ad7173_debug_reg_access,
+	.validate_trigger = ad_sd_validate_trigger,
+	.update_scan_mode = ad7173_update_scan_mode,
+};
+
+static const struct iio_chan_spec ad7173_channel_template = {
+	.type = IIO_VOLTAGE,
+	.indexed = 1,
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+		BIT(IIO_CHAN_INFO_SCALE),
+	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+	.scan_type = {
+		.sign = 'u',
+		.realbits = 24,
+		.storagebits = 32,
+		.endianness = IIO_BE,
+	},
+};
+
+static const struct iio_chan_spec ad7173_temp_iio_channel_template = {
+	.type = IIO_TEMP,
+	.indexed = 1,
+	.channel = AD7173_AIN_TEMP_POS,
+	.channel2 = AD7173_AIN_TEMP_NEG,
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET),
+	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+	.scan_type = {
+		.sign = 'u',
+		.realbits = 24,
+		.storagebits = 32,
+		.endianness = IIO_BE,
+	},
+};
+
+static void ad7173_disable_regulators(void *data)
+{
+	struct ad7173_state *st = data;
+
+	regulator_bulk_disable(ARRAY_SIZE(st->regulators), st->regulators);
+}
+
+static void ad7173_clk_disable_unprepare(void *clk)
+{
+	clk_disable_unprepare(clk);
+}
+
+static unsigned long ad7173_sel_clk(struct ad7173_state *st,
+				    unsigned int clk_sel)
+{
+	int ret;
+
+	st->adc_mode &= ~AD7173_ADC_MODE_CLOCKSEL_MASK;
+	st->adc_mode |= FIELD_PREP(AD7173_ADC_MODE_CLOCKSEL_MASK, clk_sel);
+	ret = ad_sd_write_reg(&st->sd, AD7173_REG_ADC_MODE, 0x2, st->adc_mode);
+
+	return ret;
+}
+
+static unsigned long ad7173_clk_recalc_rate(struct clk_hw *hw,
+					    unsigned long parent_rate)
+{
+	struct ad7173_state *st = clk_hw_to_ad7173(hw);
+
+	return st->info->clock / HZ_PER_KHZ;
+}
+
+static int ad7173_clk_output_is_enabled(struct clk_hw *hw)
+{
+	struct ad7173_state *st = clk_hw_to_ad7173(hw);
+	u32 clk_sel;
+
+	clk_sel = FIELD_GET(AD7173_ADC_MODE_CLOCKSEL_MASK, st->adc_mode);
+	return clk_sel == AD7173_ADC_MODE_CLOCKSEL_INT_OUTPUT;
+}
+
+static int ad7173_clk_output_prepare(struct clk_hw *hw)
+{
+	struct ad7173_state *st = clk_hw_to_ad7173(hw);
+
+	return ad7173_sel_clk(st, AD7173_ADC_MODE_CLOCKSEL_INT_OUTPUT);
+}
+
+static void ad7173_clk_output_unprepare(struct clk_hw *hw)
+{
+	struct ad7173_state *st = clk_hw_to_ad7173(hw);
+
+	ad7173_sel_clk(st, AD7173_ADC_MODE_CLOCKSEL_INT);
+}
+
+static const struct clk_ops ad7173_int_clk_ops = {
+	.recalc_rate = ad7173_clk_recalc_rate,
+	.is_enabled = ad7173_clk_output_is_enabled,
+	.prepare = ad7173_clk_output_prepare,
+	.unprepare = ad7173_clk_output_unprepare,
+};
+
+static int ad7173_register_clk_provider(struct iio_dev *indio_dev)
+{
+	struct ad7173_state *st = iio_priv(indio_dev);
+	struct device *dev = indio_dev->dev.parent;
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
+	struct clk_init_data init = {};
+	int ret;
+
+	if (!IS_ENABLED(CONFIG_COMMON_CLK))
+		return 0;
+
+	init.name = fwnode_get_name(fwnode);
+	init.ops = &ad7173_int_clk_ops;
+
+	st->int_clk_hw.init = &init;
+	ret = devm_clk_hw_register(dev, &st->int_clk_hw);
+	if (ret)
+		return ret;
+
+	return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get,
+					   &st->int_clk_hw);
+}
+
+static int ad7173_fw_parse_channel_config(struct iio_dev *indio_dev)
+{
+	struct ad7173_channel *chans_st_arr, *chan_st_priv;
+	struct ad7173_state *st = iio_priv(indio_dev);
+	struct device *dev = indio_dev->dev.parent;
+	struct iio_chan_spec *chan_arr, *chan;
+	unsigned int ain[2], chan_index = 0;
+	int ref_sel, ret;
+
+	chan_arr = devm_kcalloc(dev, sizeof(*indio_dev->channels),
+				st->num_channels, GFP_KERNEL);
+	if (!chan_arr)
+		return -ENOMEM;
+
+	chans_st_arr = devm_kcalloc(dev, st->num_channels, sizeof(*st->channels),
+				    GFP_KERNEL);
+	if (!chans_st_arr)
+		return -ENOMEM;
+
+	indio_dev->channels = chan_arr;
+	st->channels = chans_st_arr;
+
+	if (st->info->has_temp) {
+		chan_arr[chan_index] = ad7173_temp_iio_channel_template;
+		chan_st_priv = &chans_st_arr[chan_index];
+		chan_st_priv->ain =
+			AD7173_CH_ADDRESS(chan_arr[chan_index].channel,
+					  chan_arr[chan_index].channel2);
+		chan_st_priv->cfg.bipolar = false;
+		chan_st_priv->cfg.input_buf = true;
+		chan_st_priv->cfg.ref_sel = AD7173_SETUP_REF_SEL_INT_REF;
+		st->adc_mode |= AD7173_ADC_MODE_REF_EN;
+
+		chan_index++;
+	}
+
+	device_for_each_child_node_scoped(dev, child) {
+		chan = &chan_arr[chan_index];
+		chan_st_priv = &chans_st_arr[chan_index];
+		ret = fwnode_property_read_u32_array(child, "diff-channels",
+						     ain, ARRAY_SIZE(ain));
+		if (ret)
+			return ret;
+
+		if (ain[0] >= st->info->num_inputs ||
+		    ain[1] >= st->info->num_inputs)
+			return dev_err_probe(dev, -EINVAL,
+				"Input pin number out of range for pair (%d %d).\n",
+				ain[0], ain[1]);
+
+		ret = fwnode_property_match_property_string(child,
+							    "adi,reference-select",
+							    ad7173_ref_sel_str,
+							    ARRAY_SIZE(ad7173_ref_sel_str));
+		if (ret < 0)
+			ref_sel = AD7173_SETUP_REF_SEL_INT_REF;
+		else
+			ref_sel = ret;
+
+		if (ref_sel == AD7173_SETUP_REF_SEL_INT_REF &&
+		    !st->info->has_int_ref)
+			return dev_err_probe(dev, -EINVAL,
+				"Internal reference is not available on current model.\n");
+
+		if (ref_sel == AD7173_SETUP_REF_SEL_EXT_REF2 && !st->info->has_ref2)
+			return dev_err_probe(dev, -EINVAL,
+				"External reference 2 is not available on current model.\n");
+
+		ret = ad7173_get_ref_voltage_milli(st, ref_sel);
+		if (ret < 0)
+			return dev_err_probe(dev, ret,
+					     "Cannot use reference %u\n", ref_sel);
+
+		if (ref_sel == AD7173_SETUP_REF_SEL_INT_REF)
+			st->adc_mode |= AD7173_ADC_MODE_REF_EN;
+		chan_st_priv->cfg.ref_sel = ref_sel;
+
+		*chan = ad7173_channel_template;
+		chan->address = chan_index;
+		chan->scan_index = chan_index;
+		chan->channel = ain[0];
+		chan->channel2 = ain[1];
+		chan->differential = true;
+
+		chan_st_priv->ain = AD7173_CH_ADDRESS(ain[0], ain[1]);
+		chan_st_priv->chan_reg = chan_index;
+		chan_st_priv->cfg.input_buf = true;
+		chan_st_priv->cfg.odr = 0;
+
+		chan_st_priv->cfg.bipolar = fwnode_property_read_bool(child, "bipolar");
+		if (chan_st_priv->cfg.bipolar)
+			chan->info_mask_separate |= BIT(IIO_CHAN_INFO_OFFSET);
+
+		chan_index++;
+	}
+	return 0;
+}
+
+static int ad7173_fw_parse_device_config(struct iio_dev *indio_dev)
+{
+	struct ad7173_state *st = iio_priv(indio_dev);
+	struct device *dev = indio_dev->dev.parent;
+	unsigned int num_channels;
+	int ret;
+
+	st->regulators[0].supply = ad7173_ref_sel_str[AD7173_SETUP_REF_SEL_EXT_REF];
+	st->regulators[1].supply = ad7173_ref_sel_str[AD7173_SETUP_REF_SEL_EXT_REF2];
+	st->regulators[2].supply = ad7173_ref_sel_str[AD7173_SETUP_REF_SEL_AVDD1_AVSS];
+
+	/*
+	 * If a regulator is not available, it will be set to a dummy regulator.
+	 * Each channel reference is checked with regulator_get_voltage() before
+	 * setting attributes so if any channel uses a dummy supply the driver
+	 * probe will fail.
+	 */
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(st->regulators),
+				      st->regulators);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get regulators\n");
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(st->regulators), st->regulators);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to enable regulators\n");
+
+	ret = devm_add_action_or_reset(dev, ad7173_disable_regulators, st);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to add regulators disable action\n");
+
+	ret = device_property_match_property_string(dev, "clock-names",
+						    ad7173_clk_sel,
+						    ARRAY_SIZE(ad7173_clk_sel));
+	if (ret < 0) {
+		st->adc_mode |= FIELD_PREP(AD7173_ADC_MODE_CLOCKSEL_MASK,
+					   AD7173_ADC_MODE_CLOCKSEL_INT);
+		ad7173_register_clk_provider(indio_dev);
+	} else {
+		st->adc_mode |= FIELD_PREP(AD7173_ADC_MODE_CLOCKSEL_MASK,
+					   AD7173_ADC_MODE_CLOCKSEL_EXT + ret);
+		st->ext_clk = devm_clk_get(dev, ad7173_clk_sel[ret]);
+		if (IS_ERR(st->ext_clk))
+			return dev_err_probe(dev, PTR_ERR(st->ext_clk),
+					     "Failed to get external clock\n");
+
+		ret = clk_prepare_enable(st->ext_clk);
+		if (ret)
+			return dev_err_probe(dev, ret,
+					     "Failed to enable external clock\n");
+
+		ret = devm_add_action_or_reset(dev, ad7173_clk_disable_unprepare,
+					       st->ext_clk);
+		if (ret)
+			return ret;
+	}
+
+	ret = fwnode_irq_get_byname(dev_fwnode(dev), "rdy");
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Interrupt 'rdy' is required\n");
+
+	ad7173_sigma_delta_info.irq_line = ret;
+
+	num_channels = device_get_child_node_count(dev);
+
+	if (st->info->has_temp)
+		num_channels++;
+
+	if (num_channels == 0)
+		return dev_err_probe(dev, -ENODATA, "No channels specified\n");
+	indio_dev->num_channels = num_channels;
+	st->num_channels = num_channels;
+
+	return ad7173_fw_parse_channel_config(indio_dev);
+}
+
+static int ad7173_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct ad7173_state *st;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	st->info = spi_get_device_match_data(spi);
+	if (!st->info)
+		return -ENODEV;
+
+	ida_init(&st->cfg_slots_status);
+	ret = devm_add_action_or_reset(dev, ad7173_ida_destroy, st);
+	if (ret)
+		return ret;
+
+	indio_dev->name = st->info->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->info = &ad7173_info;
+
+	spi->mode = SPI_MODE_3;
+	spi_setup(spi);
+
+	ad7173_sigma_delta_info.num_slots = st->info->num_configs;
+	ret = ad_sd_init(&st->sd, indio_dev, spi, &ad7173_sigma_delta_info);
+	if (ret)
+		return ret;
+
+	ret = ad7173_fw_parse_device_config(indio_dev);
+	if (ret)
+		return ret;
+
+	ret = devm_ad_sd_setup_buffer_and_trigger(dev, indio_dev);
+	if (ret)
+		return ret;
+
+	ret = ad7173_setup(indio_dev);
+	if (ret)
+		return ret;
+
+	ret = devm_iio_device_register(dev, indio_dev);
+	if (ret)
+		return ret;
+
+	if (IS_ENABLED(CONFIG_GPIOLIB))
+		return ad7173_gpio_init(st);
+
+	return 0;
+}
+
+static const struct of_device_id ad7173_of_match[] = {
+	{ .compatible = "adi,ad7172-2",
+	  .data = &ad7173_device_info[ID_AD7172_2]},
+	{ .compatible = "adi,ad7172-4",
+	  .data = &ad7173_device_info[ID_AD7172_4]},
+	{ .compatible = "adi,ad7173-8",
+	  .data = &ad7173_device_info[ID_AD7173_8]},
+	{ .compatible = "adi,ad7175-2",
+	  .data = &ad7173_device_info[ID_AD7175_2]},
+	{ .compatible = "adi,ad7175-8",
+	  .data = &ad7173_device_info[ID_AD7175_8]},
+	{ .compatible = "adi,ad7176-2",
+	  .data = &ad7173_device_info[ID_AD7176_2]},
+	{ .compatible = "adi,ad7177-2",
+	  .data = &ad7173_device_info[ID_AD7177_2]},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ad7173_of_match);
+
+static const struct spi_device_id ad7173_id_table[] = {
+	{ "ad7172-2", (kernel_ulong_t)&ad7173_device_info[ID_AD7172_2]},
+	{ "ad7172-4", (kernel_ulong_t)&ad7173_device_info[ID_AD7172_4]},
+	{ "ad7173-8", (kernel_ulong_t)&ad7173_device_info[ID_AD7173_8]},
+	{ "ad7175-2", (kernel_ulong_t)&ad7173_device_info[ID_AD7175_2]},
+	{ "ad7175-8", (kernel_ulong_t)&ad7173_device_info[ID_AD7175_8]},
+	{ "ad7176-2", (kernel_ulong_t)&ad7173_device_info[ID_AD7176_2]},
+	{ "ad7177-2", (kernel_ulong_t)&ad7173_device_info[ID_AD7177_2]},
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, ad7173_id_table);
+
+static struct spi_driver ad7173_driver = {
+	.driver = {
+		.name	= "ad7173",
+		.of_match_table = ad7173_of_match,
+	},
+	.probe		= ad7173_probe,
+	.id_table	= ad7173_id_table,
+};
+module_spi_driver(ad7173_driver);
+
+MODULE_IMPORT_NS(IIO_AD_SIGMA_DELTA);
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafo.de>");
+MODULE_AUTHOR("Dumitru Ceclan <dumitru.ceclan@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD7172/AD7173/AD7175/AD7176 ADC driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c
index adc3cbe92d6e..7bcc7e2aa2a2 100644
--- a/drivers/iio/adc/ad7192.c
+++ b/drivers/iio/adc/ad7192.c
@@ -17,7 +17,9 @@
 #include <linux/err.h>
 #include <linux/sched.h>
 #include <linux/delay.h>
-#include <linux/of.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -364,19 +366,19 @@ static inline bool ad7192_valid_external_frequency(u32 freq)
 		freq <= AD7192_EXT_FREQ_MHZ_MAX);
 }
 
-static int ad7192_of_clock_select(struct ad7192_state *st)
+static int ad7192_clock_select(struct ad7192_state *st)
 {
-	struct device_node *np = st->sd.spi->dev.of_node;
+	struct device *dev = &st->sd.spi->dev;
 	unsigned int clock_sel;
 
 	clock_sel = AD7192_CLK_INT;
 
 	/* use internal clock */
 	if (!st->mclk) {
-		if (of_property_read_bool(np, "adi,int-clock-output-enable"))
+		if (device_property_read_bool(dev, "adi,int-clock-output-enable"))
 			clock_sel = AD7192_CLK_INT_CO;
 	} else {
-		if (of_property_read_bool(np, "adi,clock-xtal"))
+		if (device_property_read_bool(dev, "adi,clock-xtal"))
 			clock_sel = AD7192_CLK_EXT_MCLK1_2;
 		else
 			clock_sel = AD7192_CLK_EXT_MCLK2;
@@ -385,7 +387,7 @@ static int ad7192_of_clock_select(struct ad7192_state *st)
 	return clock_sel;
 }
 
-static int ad7192_setup(struct iio_dev *indio_dev, struct device_node *np)
+static int ad7192_setup(struct iio_dev *indio_dev, struct device *dev)
 {
 	struct ad7192_state *st = iio_priv(indio_dev);
 	bool rej60_en, refin2_en;
@@ -407,7 +409,7 @@ static int ad7192_setup(struct iio_dev *indio_dev, struct device_node *np)
 	id = FIELD_GET(AD7192_ID_MASK, id);
 
 	if (id != st->chip_info->chip_id)
-		dev_warn(&st->sd.spi->dev, "device ID query failed (0x%X != 0x%X)\n",
+		dev_warn(dev, "device ID query failed (0x%X != 0x%X)\n",
 			 id, st->chip_info->chip_id);
 
 	st->mode = FIELD_PREP(AD7192_MODE_SEL_MASK, AD7192_MODE_IDLE) |
@@ -416,30 +418,30 @@ static int ad7192_setup(struct iio_dev *indio_dev, struct device_node *np)
 
 	st->conf = FIELD_PREP(AD7192_CONF_GAIN_MASK, 0);
 
-	rej60_en = of_property_read_bool(np, "adi,rejection-60-Hz-enable");
+	rej60_en = device_property_read_bool(dev, "adi,rejection-60-Hz-enable");
 	if (rej60_en)
 		st->mode |= AD7192_MODE_REJ60;
 
-	refin2_en = of_property_read_bool(np, "adi,refin2-pins-enable");
+	refin2_en = device_property_read_bool(dev, "adi,refin2-pins-enable");
 	if (refin2_en && st->chip_info->chip_id != CHIPID_AD7195)
 		st->conf |= AD7192_CONF_REFSEL;
 
 	st->conf &= ~AD7192_CONF_CHOP;
 
-	buf_en = of_property_read_bool(np, "adi,buffer-enable");
+	buf_en = device_property_read_bool(dev, "adi,buffer-enable");
 	if (buf_en)
 		st->conf |= AD7192_CONF_BUF;
 
-	bipolar = of_property_read_bool(np, "bipolar");
+	bipolar = device_property_read_bool(dev, "bipolar");
 	if (!bipolar)
 		st->conf |= AD7192_CONF_UNIPOLAR;
 
-	burnout_curr_en = of_property_read_bool(np,
-						"adi,burnout-currents-enable");
+	burnout_curr_en = device_property_read_bool(dev,
+						    "adi,burnout-currents-enable");
 	if (burnout_curr_en && buf_en) {
 		st->conf |= AD7192_CONF_BURN;
 	} else if (burnout_curr_en) {
-		dev_warn(&st->sd.spi->dev,
+		dev_warn(dev,
 			 "Can't enable burnout currents: see CHOP or buffer\n");
 	}
 
@@ -1117,9 +1119,7 @@ static int ad7192_probe(struct spi_device *spi)
 	}
 	st->int_vref_mv = ret / 1000;
 
-	st->chip_info = of_device_get_match_data(&spi->dev);
-	if (!st->chip_info)
-		st->chip_info = (void *)spi_get_device_id(spi)->driver_data;
+	st->chip_info = spi_get_device_match_data(spi);
 	indio_dev->name = st->chip_info->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = st->chip_info->channels;
@@ -1140,7 +1140,7 @@ static int ad7192_probe(struct spi_device *spi)
 	if (IS_ERR(st->mclk))
 		return PTR_ERR(st->mclk);
 
-	st->clock_sel = ad7192_of_clock_select(st);
+	st->clock_sel = ad7192_clock_select(st);
 
 	if (st->clock_sel == AD7192_CLK_EXT_MCLK1_2 ||
 	    st->clock_sel == AD7192_CLK_EXT_MCLK2) {
@@ -1152,7 +1152,7 @@ static int ad7192_probe(struct spi_device *spi)
 		}
 	}
 
-	ret = ad7192_setup(indio_dev, spi->dev.of_node);
+	ret = ad7192_setup(indio_dev, &spi->dev);
 	if (ret)
 		return ret;
 
diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
index 468c2656d2be..353a97f9c086 100644
--- a/drivers/iio/adc/ad7266.c
+++ b/drivers/iio/adc/ad7266.c
@@ -371,7 +371,6 @@ static void ad7266_init_channels(struct iio_dev *indio_dev)
 	indio_dev->channels = chan_info->channels;
 	indio_dev->num_channels = chan_info->num_channels;
 	indio_dev->available_scan_masks = chan_info->scan_masks;
-	indio_dev->masklength = chan_info->num_channels - 1;
 }
 
 static const char * const ad7266_gpio_labels[] = {
diff --git a/drivers/iio/adc/ad7292.c b/drivers/iio/adc/ad7292.c
index cccacec5db6d..6aadd14f459d 100644
--- a/drivers/iio/adc/ad7292.c
+++ b/drivers/iio/adc/ad7292.c
@@ -8,7 +8,8 @@
 #include <linux/bitfield.h>
 #include <linux/device.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
 
@@ -260,7 +261,6 @@ static int ad7292_probe(struct spi_device *spi)
 {
 	struct ad7292_state *st;
 	struct iio_dev *indio_dev;
-	struct device_node *child;
 	bool diff_channels = false;
 	int ret;
 
@@ -305,12 +305,11 @@ static int ad7292_probe(struct spi_device *spi)
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &ad7292_info;
 
-	for_each_available_child_of_node(spi->dev.of_node, child) {
-		diff_channels = of_property_read_bool(child, "diff-channels");
-		if (diff_channels) {
-			of_node_put(child);
+	device_for_each_child_node_scoped(&spi->dev, child) {
+		diff_channels = fwnode_property_read_bool(child,
+							  "diff-channels");
+		if (diff_channels)
 			break;
-		}
 	}
 
 	if (diff_channels) {
diff --git a/drivers/iio/adc/ad7944.c b/drivers/iio/adc/ad7944.c
new file mode 100644
index 000000000000..4602ab5ed2a6
--- /dev/null
+++ b/drivers/iio/adc/ad7944.c
@@ -0,0 +1,690 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Analog Devices AD7944/85/86 PulSAR ADC family driver.
+ *
+ * Copyright 2024 Analog Devices, Inc.
+ * Copyright 2024 BayLibre, SAS
+ */
+
+#include <linux/align.h>
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <linux/string_helpers.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#define AD7944_INTERNAL_REF_MV		4096
+
+struct ad7944_timing_spec {
+	/* Normal mode max conversion time (t_{CONV}). */
+	unsigned int conv_ns;
+	/* TURBO mode max conversion time (t_{CONV}). */
+	unsigned int turbo_conv_ns;
+};
+
+enum ad7944_spi_mode {
+	/* datasheet calls this "4-wire mode" */
+	AD7944_SPI_MODE_DEFAULT,
+	/* datasheet calls this "3-wire mode" (not related to SPI_3WIRE!) */
+	AD7944_SPI_MODE_SINGLE,
+	/* datasheet calls this "chain mode" */
+	AD7944_SPI_MODE_CHAIN,
+};
+
+/* maps adi,spi-mode property value to enum */
+static const char * const ad7944_spi_modes[] = {
+	[AD7944_SPI_MODE_DEFAULT] = "",
+	[AD7944_SPI_MODE_SINGLE] = "single",
+	[AD7944_SPI_MODE_CHAIN] = "chain",
+};
+
+struct ad7944_adc {
+	struct spi_device *spi;
+	enum ad7944_spi_mode spi_mode;
+	struct spi_transfer xfers[3];
+	struct spi_message msg;
+	void *chain_mode_buf;
+	/* Chip-specific timing specifications. */
+	const struct ad7944_timing_spec *timing_spec;
+	/* GPIO connected to CNV pin. */
+	struct gpio_desc *cnv;
+	/* Optional GPIO to enable turbo mode. */
+	struct gpio_desc *turbo;
+	/* Indicates TURBO is hard-wired to be always enabled. */
+	bool always_turbo;
+	/* Reference voltage (millivolts). */
+	unsigned int ref_mv;
+
+	/*
+	 * DMA (thus cache coherency maintenance) requires the
+	 * transfer buffers to live in their own cache lines.
+	 */
+	struct {
+		union {
+			u16 u16;
+			u32 u32;
+		} raw;
+		u64 timestamp __aligned(8);
+	 } sample __aligned(IIO_DMA_MINALIGN);
+};
+
+/* quite time before CNV rising edge */
+#define T_QUIET_NS	20
+
+static const struct ad7944_timing_spec ad7944_timing_spec = {
+	.conv_ns = 420,
+	.turbo_conv_ns = 320,
+};
+
+static const struct ad7944_timing_spec ad7986_timing_spec = {
+	.conv_ns = 500,
+	.turbo_conv_ns = 400,
+};
+
+struct ad7944_chip_info {
+	const char *name;
+	const struct ad7944_timing_spec *timing_spec;
+	const struct iio_chan_spec channels[2];
+};
+
+/*
+ * AD7944_DEFINE_CHIP_INFO - Define a chip info structure for a specific chip
+ * @_name: The name of the chip
+ * @_ts: The timing specification for the chip
+ * @_bits: The number of bits in the conversion result
+ * @_diff: Whether the chip is true differential or not
+ */
+#define AD7944_DEFINE_CHIP_INFO(_name, _ts, _bits, _diff)		\
+static const struct ad7944_chip_info _name##_chip_info = {		\
+	.name = #_name,							\
+	.timing_spec = &_ts##_timing_spec,				\
+	.channels = {							\
+		{							\
+			.type = IIO_VOLTAGE,				\
+			.indexed = 1,					\
+			.differential = _diff,				\
+			.channel = 0,					\
+			.channel2 = _diff ? 1 : 0,			\
+			.scan_index = 0,				\
+			.scan_type.sign = _diff ? 's' : 'u',		\
+			.scan_type.realbits = _bits,			\
+			.scan_type.storagebits = _bits > 16 ? 32 : 16,	\
+			.scan_type.endianness = IIO_CPU,		\
+			.info_mask_separate = BIT(IIO_CHAN_INFO_RAW)	\
+					| BIT(IIO_CHAN_INFO_SCALE),	\
+		},							\
+		IIO_CHAN_SOFT_TIMESTAMP(1),				\
+	},								\
+}
+
+/* pseudo-differential with ground sense */
+AD7944_DEFINE_CHIP_INFO(ad7944, ad7944, 14, 0);
+AD7944_DEFINE_CHIP_INFO(ad7985, ad7944, 16, 0);
+/* fully differential */
+AD7944_DEFINE_CHIP_INFO(ad7986, ad7986, 18, 1);
+
+static void ad7944_unoptimize_msg(void *msg)
+{
+	spi_unoptimize_message(msg);
+}
+
+static int ad7944_3wire_cs_mode_init_msg(struct device *dev, struct ad7944_adc *adc,
+					 const struct iio_chan_spec *chan)
+{
+	unsigned int t_conv_ns = adc->always_turbo ? adc->timing_spec->turbo_conv_ns
+						   : adc->timing_spec->conv_ns;
+	struct spi_transfer *xfers = adc->xfers;
+	int ret;
+
+	/*
+	 * NB: can get better performance from some SPI controllers if we use
+	 * the same bits_per_word in every transfer.
+	 */
+	xfers[0].bits_per_word = chan->scan_type.realbits;
+	/*
+	 * CS is tied to CNV and we need a low to high transition to start the
+	 * conversion, so place CNV low for t_QUIET to prepare for this.
+	 */
+	xfers[0].delay.value = T_QUIET_NS;
+	xfers[0].delay.unit = SPI_DELAY_UNIT_NSECS;
+
+	/*
+	 * CS has to be high for full conversion time to avoid triggering the
+	 * busy indication.
+	 */
+	xfers[1].cs_off = 1;
+	xfers[1].delay.value = t_conv_ns;
+	xfers[1].delay.unit = SPI_DELAY_UNIT_NSECS;
+	xfers[1].bits_per_word = chan->scan_type.realbits;
+
+	/* Then we can read the data during the acquisition phase */
+	xfers[2].rx_buf = &adc->sample.raw;
+	xfers[2].len = BITS_TO_BYTES(chan->scan_type.storagebits);
+	xfers[2].bits_per_word = chan->scan_type.realbits;
+
+	spi_message_init_with_transfers(&adc->msg, xfers, 3);
+
+	ret = spi_optimize_message(adc->spi, &adc->msg);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(dev, ad7944_unoptimize_msg, &adc->msg);
+}
+
+static int ad7944_4wire_mode_init_msg(struct device *dev, struct ad7944_adc *adc,
+				      const struct iio_chan_spec *chan)
+{
+	unsigned int t_conv_ns = adc->always_turbo ? adc->timing_spec->turbo_conv_ns
+						   : adc->timing_spec->conv_ns;
+	struct spi_transfer *xfers = adc->xfers;
+	int ret;
+
+	/*
+	 * NB: can get better performance from some SPI controllers if we use
+	 * the same bits_per_word in every transfer.
+	 */
+	xfers[0].bits_per_word = chan->scan_type.realbits;
+	/*
+	 * CS has to be high for full conversion time to avoid triggering the
+	 * busy indication.
+	 */
+	xfers[0].cs_off = 1;
+	xfers[0].delay.value = t_conv_ns;
+	xfers[0].delay.unit = SPI_DELAY_UNIT_NSECS;
+
+	xfers[1].rx_buf = &adc->sample.raw;
+	xfers[1].len = BITS_TO_BYTES(chan->scan_type.storagebits);
+	xfers[1].bits_per_word = chan->scan_type.realbits;
+
+	spi_message_init_with_transfers(&adc->msg, xfers, 2);
+
+	ret = spi_optimize_message(adc->spi, &adc->msg);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(dev, ad7944_unoptimize_msg, &adc->msg);
+}
+
+static int ad7944_chain_mode_init_msg(struct device *dev, struct ad7944_adc *adc,
+				      const struct iio_chan_spec *chan,
+				      u32 n_chain_dev)
+{
+	struct spi_transfer *xfers = adc->xfers;
+	int ret;
+
+	/*
+	 * NB: SCLK has to be low before we toggle CS to avoid triggering the
+	 * busy indication.
+	 */
+	if (adc->spi->mode & SPI_CPOL)
+		return dev_err_probe(dev, -EINVAL,
+				     "chain mode requires ~SPI_CPOL\n");
+
+	/*
+	 * We only support CNV connected to CS in chain mode and we need CNV
+	 * to be high during the transfer to trigger the conversion.
+	 */
+	if (!(adc->spi->mode & SPI_CS_HIGH))
+		return dev_err_probe(dev, -EINVAL,
+				     "chain mode requires SPI_CS_HIGH\n");
+
+	/* CNV has to be high for full conversion time before reading data. */
+	xfers[0].delay.value = adc->timing_spec->conv_ns;
+	xfers[0].delay.unit = SPI_DELAY_UNIT_NSECS;
+
+	xfers[1].rx_buf = adc->chain_mode_buf;
+	xfers[1].len = BITS_TO_BYTES(chan->scan_type.storagebits) * n_chain_dev;
+	xfers[1].bits_per_word = chan->scan_type.realbits;
+
+	spi_message_init_with_transfers(&adc->msg, xfers, 2);
+
+	ret = spi_optimize_message(adc->spi, &adc->msg);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(dev, ad7944_unoptimize_msg, &adc->msg);
+}
+
+/**
+ * ad7944_convert_and_acquire - Perform a single conversion and acquisition
+ * @adc: The ADC device structure
+ * @chan: The channel specification
+ * Return: 0 on success, a negative error code on failure
+ *
+ * Perform a conversion and acquisition of a single sample using the
+ * pre-optimized adc->msg.
+ *
+ * Upon successful return adc->sample.raw will contain the conversion result
+ * (or adc->chain_mode_buf if the device is using chain mode).
+ */
+static int ad7944_convert_and_acquire(struct ad7944_adc *adc,
+				      const struct iio_chan_spec *chan)
+{
+	int ret;
+
+	/*
+	 * In 4-wire mode, the CNV line is held high for the entire conversion
+	 * and acquisition process. In other modes adc->cnv is NULL and is
+	 * ignored (CS is wired to CNV in those cases).
+	 */
+	gpiod_set_value_cansleep(adc->cnv, 1);
+	ret = spi_sync(adc->spi, &adc->msg);
+	gpiod_set_value_cansleep(adc->cnv, 0);
+
+	return ret;
+}
+
+static int ad7944_single_conversion(struct ad7944_adc *adc,
+				    const struct iio_chan_spec *chan,
+				    int *val)
+{
+	int ret;
+
+	ret = ad7944_convert_and_acquire(adc, chan);
+	if (ret)
+		return ret;
+
+	if (adc->spi_mode == AD7944_SPI_MODE_CHAIN) {
+		if (chan->scan_type.storagebits > 16)
+			*val = ((u32 *)adc->chain_mode_buf)[chan->scan_index];
+		else
+			*val = ((u16 *)adc->chain_mode_buf)[chan->scan_index];
+	} else {
+		if (chan->scan_type.storagebits > 16)
+			*val = adc->sample.raw.u32;
+		else
+			*val = adc->sample.raw.u16;
+	}
+
+	if (chan->scan_type.sign == 's')
+		*val = sign_extend32(*val, chan->scan_type.realbits - 1);
+
+	return IIO_VAL_INT;
+}
+
+static int ad7944_read_raw(struct iio_dev *indio_dev,
+			   const struct iio_chan_spec *chan,
+			   int *val, int *val2, long info)
+{
+	struct ad7944_adc *adc = iio_priv(indio_dev);
+	int ret;
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		ret = ad7944_single_conversion(adc, chan, val);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			*val = adc->ref_mv;
+
+			if (chan->scan_type.sign == 's')
+				*val2 = chan->scan_type.realbits - 1;
+			else
+				*val2 = chan->scan_type.realbits;
+
+			return IIO_VAL_FRACTIONAL_LOG2;
+		default:
+			return -EINVAL;
+		}
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info ad7944_iio_info = {
+	.read_raw = &ad7944_read_raw,
+};
+
+static irqreturn_t ad7944_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct ad7944_adc *adc = iio_priv(indio_dev);
+	int ret;
+
+	ret = ad7944_convert_and_acquire(adc, &indio_dev->channels[0]);
+	if (ret)
+		goto out;
+
+	if (adc->spi_mode == AD7944_SPI_MODE_CHAIN)
+		iio_push_to_buffers_with_timestamp(indio_dev, adc->chain_mode_buf,
+						   pf->timestamp);
+	else
+		iio_push_to_buffers_with_timestamp(indio_dev, &adc->sample.raw,
+						   pf->timestamp);
+
+out:
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * ad7944_chain_mode_alloc - allocate and initialize channel specs and buffers
+ *                           for daisy-chained devices
+ * @dev: The device for devm_ functions
+ * @chan_template: The channel template for the devices (array of 2 channels
+ *                 voltage and timestamp)
+ * @n_chain_dev: The number of devices in the chain
+ * @chain_chan: Pointer to receive the allocated channel specs
+ * @chain_mode_buf: Pointer to receive the allocated rx buffer
+ * @chain_scan_masks: Pointer to receive the allocated scan masks
+ * Return: 0 on success, a negative error code on failure
+ */
+static int ad7944_chain_mode_alloc(struct device *dev,
+				   const struct iio_chan_spec *chan_template,
+				   u32 n_chain_dev,
+				   struct iio_chan_spec **chain_chan,
+				   void **chain_mode_buf,
+				   unsigned long **chain_scan_masks)
+{
+	struct iio_chan_spec *chan;
+	size_t chain_mode_buf_size;
+	unsigned long *scan_masks;
+	void *buf;
+	int i;
+
+	/* 1 channel for each device in chain plus 1 for soft timestamp */
+
+	chan = devm_kcalloc(dev, n_chain_dev + 1, sizeof(*chan), GFP_KERNEL);
+	if (!chan)
+		return -ENOMEM;
+
+	for (i = 0; i < n_chain_dev; i++) {
+		chan[i] = chan_template[0];
+
+		if (chan_template[0].differential) {
+			chan[i].channel = 2 * i;
+			chan[i].channel2 = 2 * i + 1;
+		} else {
+			chan[i].channel = i;
+		}
+
+		chan[i].scan_index = i;
+	}
+
+	/* soft timestamp */
+	chan[i] = chan_template[1];
+	chan[i].scan_index = i;
+
+	*chain_chan = chan;
+
+	/* 1 word for each voltage channel + aligned u64 for timestamp */
+
+	chain_mode_buf_size = ALIGN(n_chain_dev *
+		BITS_TO_BYTES(chan[0].scan_type.storagebits), sizeof(u64))
+		+ sizeof(u64);
+	buf = devm_kzalloc(dev, chain_mode_buf_size, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	*chain_mode_buf = buf;
+
+	/*
+	 * Have to limit n_chain_dev due to current implementation of
+	 * available_scan_masks.
+	 */
+	if (n_chain_dev > BITS_PER_LONG)
+		return dev_err_probe(dev, -EINVAL,
+				     "chain is limited to 32 devices\n");
+
+	scan_masks = devm_kcalloc(dev, 2, sizeof(*scan_masks), GFP_KERNEL);
+	if (!scan_masks)
+		return -ENOMEM;
+
+	/*
+	 * Scan mask is needed since we always have to read all devices in the
+	 * chain in one SPI transfer.
+	 */
+	scan_masks[0] = GENMASK(n_chain_dev - 1, 0);
+
+	*chain_scan_masks = scan_masks;
+
+	return 0;
+}
+
+static const char * const ad7944_power_supplies[] = {
+	"avdd",	"dvdd",	"bvdd", "vio"
+};
+
+static void ad7944_ref_disable(void *ref)
+{
+	regulator_disable(ref);
+}
+
+static int ad7944_probe(struct spi_device *spi)
+{
+	const struct ad7944_chip_info *chip_info;
+	struct device *dev = &spi->dev;
+	struct iio_dev *indio_dev;
+	struct ad7944_adc *adc;
+	bool have_refin = false;
+	struct regulator *ref;
+	struct iio_chan_spec *chain_chan;
+	unsigned long *chain_scan_masks;
+	u32 n_chain_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*adc));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	adc = iio_priv(indio_dev);
+	adc->spi = spi;
+
+	chip_info = spi_get_device_match_data(spi);
+	if (!chip_info)
+		return dev_err_probe(dev, -EINVAL, "no chip info\n");
+
+	adc->timing_spec = chip_info->timing_spec;
+
+	ret = device_property_match_property_string(dev, "adi,spi-mode",
+						    ad7944_spi_modes,
+						    ARRAY_SIZE(ad7944_spi_modes));
+	/* absence of adi,spi-mode property means default mode */
+	if (ret == -EINVAL)
+		adc->spi_mode = AD7944_SPI_MODE_DEFAULT;
+	else if (ret < 0)
+		return dev_err_probe(dev, ret,
+				     "getting adi,spi-mode property failed\n");
+	else
+		adc->spi_mode = ret;
+
+	/*
+	 * Some chips use unusual word sizes, so check now instead of waiting
+	 * for the first xfer.
+	 */
+	if (!spi_is_bpw_supported(spi, chip_info->channels[0].scan_type.realbits))
+		return dev_err_probe(dev, -EINVAL,
+				"SPI host does not support %d bits per word\n",
+				chip_info->channels[0].scan_type.realbits);
+
+	ret = devm_regulator_bulk_get_enable(dev,
+					     ARRAY_SIZE(ad7944_power_supplies),
+					     ad7944_power_supplies);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "failed to get and enable supplies\n");
+
+	/*
+	 * Sort out what is being used for the reference voltage. Options are:
+	 * - internal reference: neither REF or REFIN is connected
+	 * - internal reference with external buffer: REF not connected, REFIN
+	 *   is connected
+	 * - external reference: REF is connected, REFIN is not connected
+	 */
+
+	ref = devm_regulator_get_optional(dev, "ref");
+	if (IS_ERR(ref)) {
+		if (PTR_ERR(ref) != -ENODEV)
+			return dev_err_probe(dev, PTR_ERR(ref),
+					     "failed to get REF supply\n");
+
+		ref = NULL;
+	}
+
+	ret = devm_regulator_get_enable_optional(dev, "refin");
+	if (ret == 0)
+		have_refin = true;
+	else if (ret != -ENODEV)
+		return dev_err_probe(dev, ret,
+				     "failed to get and enable REFIN supply\n");
+
+	if (have_refin && ref)
+		return dev_err_probe(dev, -EINVAL,
+				     "cannot have both refin and ref supplies\n");
+
+	if (ref) {
+		ret = regulator_enable(ref);
+		if (ret)
+			return dev_err_probe(dev, ret,
+					     "failed to enable REF supply\n");
+
+		ret = devm_add_action_or_reset(dev, ad7944_ref_disable, ref);
+		if (ret)
+			return ret;
+
+		ret = regulator_get_voltage(ref);
+		if (ret < 0)
+			return dev_err_probe(dev, ret,
+					     "failed to get REF voltage\n");
+
+		/* external reference */
+		adc->ref_mv = ret / 1000;
+	} else {
+		/* internal reference */
+		adc->ref_mv = AD7944_INTERNAL_REF_MV;
+	}
+
+	adc->cnv = devm_gpiod_get_optional(dev, "cnv", GPIOD_OUT_LOW);
+	if (IS_ERR(adc->cnv))
+		return dev_err_probe(dev, PTR_ERR(adc->cnv),
+				     "failed to get CNV GPIO\n");
+
+	if (!adc->cnv && adc->spi_mode == AD7944_SPI_MODE_DEFAULT)
+		return dev_err_probe(&spi->dev, -EINVAL, "CNV GPIO is required\n");
+	if (adc->cnv && adc->spi_mode != AD7944_SPI_MODE_DEFAULT)
+		return dev_err_probe(&spi->dev, -EINVAL,
+				     "CNV GPIO in single and chain mode is not currently supported\n");
+
+	adc->turbo = devm_gpiod_get_optional(dev, "turbo", GPIOD_OUT_LOW);
+	if (IS_ERR(adc->turbo))
+		return dev_err_probe(dev, PTR_ERR(adc->turbo),
+				     "failed to get TURBO GPIO\n");
+
+	adc->always_turbo = device_property_present(dev, "adi,always-turbo");
+
+	if (adc->turbo && adc->always_turbo)
+		return dev_err_probe(dev, -EINVAL,
+			"cannot have both turbo-gpios and adi,always-turbo\n");
+
+	if (adc->spi_mode == AD7944_SPI_MODE_CHAIN && adc->always_turbo)
+		return dev_err_probe(dev, -EINVAL,
+			"cannot have both chain mode and always turbo\n");
+
+	switch (adc->spi_mode) {
+	case AD7944_SPI_MODE_DEFAULT:
+		ret = ad7944_4wire_mode_init_msg(dev, adc, &chip_info->channels[0]);
+		if (ret)
+			return ret;
+
+		break;
+	case AD7944_SPI_MODE_SINGLE:
+		ret = ad7944_3wire_cs_mode_init_msg(dev, adc, &chip_info->channels[0]);
+		if (ret)
+			return ret;
+
+		break;
+	case AD7944_SPI_MODE_CHAIN:
+		ret = device_property_read_u32(dev, "#daisy-chained-devices",
+					       &n_chain_dev);
+		if (ret)
+			return dev_err_probe(dev, ret,
+					"failed to get #daisy-chained-devices\n");
+
+		ret = ad7944_chain_mode_alloc(dev, chip_info->channels,
+					      n_chain_dev, &chain_chan,
+					      &adc->chain_mode_buf,
+					      &chain_scan_masks);
+		if (ret)
+			return ret;
+
+		ret = ad7944_chain_mode_init_msg(dev, adc, &chain_chan[0],
+						 n_chain_dev);
+		if (ret)
+			return ret;
+
+		break;
+	}
+
+	indio_dev->name = chip_info->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->info = &ad7944_iio_info;
+
+	if (adc->spi_mode == AD7944_SPI_MODE_CHAIN) {
+		indio_dev->available_scan_masks = chain_scan_masks;
+		indio_dev->channels = chain_chan;
+		indio_dev->num_channels = n_chain_dev + 1;
+	} else {
+		indio_dev->channels = chip_info->channels;
+		indio_dev->num_channels = ARRAY_SIZE(chip_info->channels);
+	}
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
+					      iio_pollfunc_store_time,
+					      ad7944_trigger_handler, NULL);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct of_device_id ad7944_of_match[] = {
+	{ .compatible = "adi,ad7944", .data = &ad7944_chip_info },
+	{ .compatible = "adi,ad7985", .data = &ad7985_chip_info },
+	{ .compatible = "adi,ad7986", .data = &ad7986_chip_info },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ad7944_of_match);
+
+static const struct spi_device_id ad7944_spi_id[] = {
+	{ "ad7944", (kernel_ulong_t)&ad7944_chip_info },
+	{ "ad7985", (kernel_ulong_t)&ad7985_chip_info },
+	{ "ad7986", (kernel_ulong_t)&ad7986_chip_info },
+	{ }
+
+};
+MODULE_DEVICE_TABLE(spi, ad7944_spi_id);
+
+static struct spi_driver ad7944_driver = {
+	.driver = {
+		.name = "ad7944",
+		.of_match_table = ad7944_of_match,
+	},
+	.probe = ad7944_probe,
+	.id_table = ad7944_spi_id,
+};
+module_spi_driver(ad7944_driver);
+
+MODULE_AUTHOR("David Lechner <dlechner@baylibre.com>");
+MODULE_DESCRIPTION("Analog Devices AD7944 PulSAR ADC family driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index b757cc45c4de..0f0dcd9ca6b6 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -128,7 +128,7 @@ struct ad799x_state {
 	struct regulator		*vref;
 	/* lock to protect against multiple access to the device */
 	struct mutex			lock;
-	unsigned			id;
+	unsigned int			id;
 	u16				config;
 
 	u8				*rx_buf;
@@ -253,7 +253,7 @@ static int ad799x_update_scan_mode(struct iio_dev *indio_dev,
 	}
 }
 
-static int ad799x_scan_direct(struct ad799x_state *st, unsigned ch)
+static int ad799x_scan_direct(struct ad799x_state *st, unsigned int ch)
 {
 	u8 cmd;
 
@@ -335,6 +335,7 @@ static ssize_t ad799x_read_frequency(struct device *dev,
 	struct ad799x_state *st = iio_priv(indio_dev);
 
 	int ret = i2c_smbus_read_byte_data(st->client, AD7998_CYCLE_TMR_REG);
+
 	if (ret < 0)
 		return ret;
 
@@ -523,7 +524,7 @@ done:
 	return IRQ_HANDLED;
 }
 
-static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
+static IIO_DEV_ATTR_SAMP_FREQ(0644,
 			      ad799x_read_frequency,
 			      ad799x_write_frequency);
 static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("15625 7812 3906 1953 976 488 244 0");
diff --git a/drivers/iio/adc/ad9467.c b/drivers/iio/adc/ad9467.c
index 7475ec2a56c7..e85b763b9ffc 100644
--- a/drivers/iio/adc/ad9467.c
+++ b/drivers/iio/adc/ad9467.c
@@ -4,7 +4,11 @@
  *
  * Copyright 2012-2020 Analog Devices Inc.
  */
+
+#include <linux/bitmap.h>
+#include <linux/bitops.h>
 #include <linux/cleanup.h>
+#include <linux/debugfs.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/device.h>
@@ -100,6 +104,8 @@
 #define AD9467_DEF_OUTPUT_MODE		0x08
 #define AD9467_REG_VREF_MASK		0x0F
 
+#define AD9647_MAX_TEST_POINTS		32
+
 struct ad9467_chip_info {
 	const char		*name;
 	unsigned int		id;
@@ -110,6 +116,9 @@ struct ad9467_chip_info {
 	unsigned long		max_rate;
 	unsigned int		default_output_mode;
 	unsigned int		vref_mask;
+	unsigned int		num_lanes;
+	/* data clock output */
+	bool			has_dco;
 };
 
 struct ad9467_state {
@@ -119,7 +128,16 @@ struct ad9467_state {
 	struct clk			*clk;
 	unsigned int			output_mode;
 	unsigned int                    (*scales)[2];
-
+	/*
+	 * Times 2 because we may also invert the signal polarity and run the
+	 * calibration again. For some reference on the test points (ad9265) see:
+	 * https://www.analog.com/media/en/technical-documentation/data-sheets/ad9265.pdf
+	 * at page 38 for the dco output delay. On devices as ad9467, the
+	 * calibration is done at the backend level. For the ADI axi-adc:
+	 * https://wiki.analog.com/resources/fpga/docs/axi_adc_ip
+	 * at the io delay control section.
+	 */
+	DECLARE_BITMAP(calib_map, AD9647_MAX_TEST_POINTS * 2);
 	struct gpio_desc		*pwrdown_gpio;
 	/* ensure consistent state obtained on multiple related accesses */
 	struct mutex			lock;
@@ -242,6 +260,7 @@ static const struct ad9467_chip_info ad9467_chip_tbl = {
 	.num_channels = ARRAY_SIZE(ad9467_channels),
 	.default_output_mode = AD9467_DEF_OUTPUT_MODE,
 	.vref_mask = AD9467_REG_VREF_MASK,
+	.num_lanes = 8,
 };
 
 static const struct ad9467_chip_info ad9434_chip_tbl = {
@@ -254,6 +273,7 @@ static const struct ad9467_chip_info ad9434_chip_tbl = {
 	.num_channels = ARRAY_SIZE(ad9434_channels),
 	.default_output_mode = AD9434_DEF_OUTPUT_MODE,
 	.vref_mask = AD9434_REG_VREF_MASK,
+	.num_lanes = 6,
 };
 
 static const struct ad9467_chip_info ad9265_chip_tbl = {
@@ -266,6 +286,7 @@ static const struct ad9467_chip_info ad9265_chip_tbl = {
 	.num_channels = ARRAY_SIZE(ad9467_channels),
 	.default_output_mode = AD9265_DEF_OUTPUT_MODE,
 	.vref_mask = AD9265_REG_VREF_MASK,
+	.has_dco = true,
 };
 
 static int ad9467_get_scale(struct ad9467_state *st, int *val, int *val2)
@@ -321,6 +342,246 @@ static int ad9467_set_scale(struct ad9467_state *st, int val, int val2)
 	return -EINVAL;
 }
 
+static int ad9467_outputmode_set(struct spi_device *spi, unsigned int mode)
+{
+	int ret;
+
+	ret = ad9467_spi_write(spi, AN877_ADC_REG_OUTPUT_MODE, mode);
+	if (ret < 0)
+		return ret;
+
+	return ad9467_spi_write(spi, AN877_ADC_REG_TRANSFER,
+				AN877_ADC_TRANSFER_SYNC);
+}
+
+static int ad9647_calibrate_prepare(const struct ad9467_state *st)
+{
+	struct iio_backend_data_fmt data = {
+		.enable = false,
+	};
+	unsigned int c;
+	int ret;
+
+	ret = ad9467_spi_write(st->spi, AN877_ADC_REG_TEST_IO,
+			       AN877_ADC_TESTMODE_PN9_SEQ);
+	if (ret)
+		return ret;
+
+	ret = ad9467_spi_write(st->spi, AN877_ADC_REG_TRANSFER,
+			       AN877_ADC_TRANSFER_SYNC);
+	if (ret)
+		return ret;
+
+	ret = ad9467_outputmode_set(st->spi, st->info->default_output_mode);
+	if (ret)
+		return ret;
+
+	for (c = 0; c < st->info->num_channels; c++) {
+		ret = iio_backend_data_format_set(st->back, c, &data);
+		if (ret)
+			return ret;
+	}
+
+	ret = iio_backend_test_pattern_set(st->back, 0,
+					   IIO_BACKEND_ADI_PRBS_9A);
+	if (ret)
+		return ret;
+
+	return iio_backend_chan_enable(st->back, 0);
+}
+
+static int ad9647_calibrate_polarity_set(const struct ad9467_state *st,
+					 bool invert)
+{
+	enum iio_backend_sample_trigger trigger;
+
+	if (st->info->has_dco) {
+		unsigned int phase = AN877_ADC_OUTPUT_EVEN_ODD_MODE_EN;
+
+		if (invert)
+			phase |= AN877_ADC_INVERT_DCO_CLK;
+
+		return ad9467_spi_write(st->spi, AN877_ADC_REG_OUTPUT_PHASE,
+					phase);
+	}
+
+	if (invert)
+		trigger = IIO_BACKEND_SAMPLE_TRIGGER_EDGE_FALLING;
+	else
+		trigger = IIO_BACKEND_SAMPLE_TRIGGER_EDGE_RISING;
+
+	return iio_backend_data_sample_trigger(st->back, trigger);
+}
+
+/*
+ * The idea is pretty simple. Find the max number of successful points in a row
+ * and get the one in the middle.
+ */
+static unsigned int ad9467_find_optimal_point(const unsigned long *calib_map,
+					      unsigned int start,
+					      unsigned int nbits,
+					      unsigned int *val)
+{
+	unsigned int bit = start, end, start_cnt, cnt = 0;
+
+	for_each_clear_bitrange_from(bit, end, calib_map, nbits + start) {
+		if (end - bit > cnt) {
+			cnt = end - bit;
+			start_cnt = bit;
+		}
+	}
+
+	if (cnt)
+		*val = start_cnt + cnt / 2;
+
+	return cnt;
+}
+
+static int ad9467_calibrate_apply(const struct ad9467_state *st,
+				  unsigned int val)
+{
+	unsigned int lane;
+	int ret;
+
+	if (st->info->has_dco) {
+		ret = ad9467_spi_write(st->spi, AN877_ADC_REG_OUTPUT_DELAY,
+				       val);
+		if (ret)
+			return ret;
+
+		return ad9467_spi_write(st->spi, AN877_ADC_REG_TRANSFER,
+					AN877_ADC_TRANSFER_SYNC);
+	}
+
+	for (lane = 0; lane < st->info->num_lanes; lane++) {
+		ret = iio_backend_iodelay_set(st->back, lane, val);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int ad9647_calibrate_stop(const struct ad9467_state *st)
+{
+	struct iio_backend_data_fmt data = {
+		.sign_extend = true,
+		.enable = true,
+	};
+	unsigned int c, mode;
+	int ret;
+
+	ret = iio_backend_chan_disable(st->back, 0);
+	if (ret)
+		return ret;
+
+	ret = iio_backend_test_pattern_set(st->back, 0,
+					   IIO_BACKEND_NO_TEST_PATTERN);
+	if (ret)
+		return ret;
+
+	for (c = 0; c < st->info->num_channels; c++) {
+		ret = iio_backend_data_format_set(st->back, c, &data);
+		if (ret)
+			return ret;
+	}
+
+	mode = st->info->default_output_mode | AN877_ADC_OUTPUT_MODE_TWOS_COMPLEMENT;
+	ret = ad9467_outputmode_set(st->spi, mode);
+	if (ret)
+		return ret;
+
+	ret = ad9467_spi_write(st->spi, AN877_ADC_REG_TEST_IO,
+			       AN877_ADC_TESTMODE_OFF);
+	if (ret)
+		return ret;
+
+	return ad9467_spi_write(st->spi, AN877_ADC_REG_TRANSFER,
+			       AN877_ADC_TRANSFER_SYNC);
+}
+
+static int ad9467_calibrate(struct ad9467_state *st)
+{
+	unsigned int point, val, inv_val, cnt, inv_cnt = 0;
+	/*
+	 * Half of the bitmap is for the inverted signal. The number of test
+	 * points is the same though...
+	 */
+	unsigned int test_points = AD9647_MAX_TEST_POINTS;
+	unsigned long sample_rate = clk_get_rate(st->clk);
+	struct device *dev = &st->spi->dev;
+	bool invert = false, stat;
+	int ret;
+
+	/* all points invalid */
+	bitmap_fill(st->calib_map, BITS_PER_TYPE(st->calib_map));
+
+	ret = ad9647_calibrate_prepare(st);
+	if (ret)
+		return ret;
+retune:
+	ret = ad9647_calibrate_polarity_set(st, invert);
+	if (ret)
+		return ret;
+
+	for (point = 0; point < test_points; point++) {
+		ret = ad9467_calibrate_apply(st, point);
+		if (ret)
+			return ret;
+
+		ret = iio_backend_chan_status(st->back, 0, &stat);
+		if (ret)
+			return ret;
+
+		__assign_bit(point + invert * test_points, st->calib_map, stat);
+	}
+
+	if (!invert) {
+		cnt = ad9467_find_optimal_point(st->calib_map, 0, test_points,
+						&val);
+		/*
+		 * We're happy if we find, at least, three good test points in
+		 * a row.
+		 */
+		if (cnt < 3) {
+			invert = true;
+			goto retune;
+		}
+	} else {
+		inv_cnt = ad9467_find_optimal_point(st->calib_map, test_points,
+						    test_points, &inv_val);
+		if (!inv_cnt && !cnt)
+			return -EIO;
+	}
+
+	if (inv_cnt < cnt) {
+		ret = ad9647_calibrate_polarity_set(st, false);
+		if (ret)
+			return ret;
+	} else {
+		/*
+		 * polarity inverted is the last test to run. Hence, there's no
+		 * need to re-do any configuration. We just need to "normalize"
+		 * the selected value.
+		 */
+		val = inv_val - test_points;
+	}
+
+	if (st->info->has_dco)
+		dev_dbg(dev, "%sDCO 0x%X CLK %lu Hz\n", inv_cnt >= cnt ? "INVERT " : "",
+			val, sample_rate);
+	else
+		dev_dbg(dev, "%sIDELAY 0x%x\n", inv_cnt >= cnt ? "INVERT " : "",
+			val);
+
+	ret = ad9467_calibrate_apply(st, val);
+	if (ret)
+		return ret;
+
+	/* finally apply the optimal value */
+	return ad9647_calibrate_stop(st);
+}
+
 static int ad9467_read_raw(struct iio_dev *indio_dev,
 			   struct iio_chan_spec const *chan,
 			   int *val, int *val2, long m)
@@ -345,7 +606,9 @@ static int ad9467_write_raw(struct iio_dev *indio_dev,
 {
 	struct ad9467_state *st = iio_priv(indio_dev);
 	const struct ad9467_chip_info *info = st->info;
+	unsigned long sample_rate;
 	long r_clk;
+	int ret;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_SCALE:
@@ -358,7 +621,23 @@ static int ad9467_write_raw(struct iio_dev *indio_dev,
 			return -EINVAL;
 		}
 
-		return clk_set_rate(st->clk, r_clk);
+		sample_rate = clk_get_rate(st->clk);
+		/*
+		 * clk_set_rate() would also do this but since we would still
+		 * need it for avoiding an unnecessary calibration, do it now.
+		 */
+		if (sample_rate == r_clk)
+			return 0;
+
+		iio_device_claim_direct_scoped(return -EBUSY, indio_dev) {
+			ret = clk_set_rate(st->clk, r_clk);
+			if (ret)
+				return ret;
+
+			guard(mutex)(&st->lock);
+			ret = ad9467_calibrate(st);
+		}
+		return ret;
 	default:
 		return -EINVAL;
 	}
@@ -411,18 +690,6 @@ static const struct iio_info ad9467_info = {
 	.read_avail = ad9467_read_avail,
 };
 
-static int ad9467_outputmode_set(struct spi_device *spi, unsigned int mode)
-{
-	int ret;
-
-	ret = ad9467_spi_write(spi, AN877_ADC_REG_OUTPUT_MODE, mode);
-	if (ret < 0)
-		return ret;
-
-	return ad9467_spi_write(spi, AN877_ADC_REG_TRANSFER,
-				AN877_ADC_TRANSFER_SYNC);
-}
-
 static int ad9467_scale_fill(struct ad9467_state *st)
 {
 	const struct ad9467_chip_info *info = st->info;
@@ -442,29 +709,6 @@ static int ad9467_scale_fill(struct ad9467_state *st)
 	return 0;
 }
 
-static int ad9467_setup(struct ad9467_state *st)
-{
-	struct iio_backend_data_fmt data = {
-		.sign_extend = true,
-		.enable = true,
-	};
-	unsigned int c, mode;
-	int ret;
-
-	mode = st->info->default_output_mode | AN877_ADC_OUTPUT_MODE_TWOS_COMPLEMENT;
-	ret = ad9467_outputmode_set(st->spi, mode);
-	if (ret)
-		return ret;
-
-	for (c = 0; c < st->info->num_channels; c++) {
-		ret = iio_backend_data_format_set(st->back, c, &data);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
 static int ad9467_reset(struct device *dev)
 {
 	struct gpio_desc *gpio;
@@ -521,6 +765,52 @@ static int ad9467_iio_backend_get(struct ad9467_state *st)
 	return -ENODEV;
 }
 
+static ssize_t ad9467_dump_calib_table(struct file *file,
+				       char __user *userbuf,
+				       size_t count, loff_t *ppos)
+{
+	struct ad9467_state *st = file->private_data;
+	unsigned int bit, size = BITS_PER_TYPE(st->calib_map);
+	/* +2 for the newline and +1 for the string termination */
+	unsigned char map[AD9647_MAX_TEST_POINTS * 2 + 3];
+	ssize_t len = 0;
+
+	guard(mutex)(&st->lock);
+	if (*ppos)
+		goto out_read;
+
+	for (bit = 0; bit < size; bit++) {
+		if (bit == size / 2)
+			len += scnprintf(map + len, sizeof(map) - len, "\n");
+
+		len += scnprintf(map + len, sizeof(map) - len, "%c",
+				 test_bit(bit, st->calib_map) ? 'x' : 'o');
+	}
+
+	len += scnprintf(map + len, sizeof(map) - len, "\n");
+out_read:
+	return simple_read_from_buffer(userbuf, count, ppos, map, len);
+}
+
+static const struct file_operations ad9467_calib_table_fops = {
+	.open = simple_open,
+	.read = ad9467_dump_calib_table,
+	.llseek = default_llseek,
+	.owner = THIS_MODULE,
+};
+
+static void ad9467_debugfs_init(struct iio_dev *indio_dev)
+{
+	struct dentry *d = iio_get_debugfs_dentry(indio_dev);
+	struct ad9467_state *st = iio_priv(indio_dev);
+
+	if (!IS_ENABLED(CONFIG_DEBUG_FS))
+		return;
+
+	debugfs_create_file("calibration_table_dump", 0400, d, st,
+			    &ad9467_calib_table_fops);
+}
+
 static int ad9467_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
@@ -580,11 +870,17 @@ static int ad9467_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	ret = ad9467_setup(st);
+	ret = ad9467_calibrate(st);
+	if (ret)
+		return ret;
+
+	ret = devm_iio_device_register(&spi->dev, indio_dev);
 	if (ret)
 		return ret;
 
-	return devm_iio_device_register(&spi->dev, indio_dev);
+	ad9467_debugfs_init(indio_dev);
+
+	return 0;
 }
 
 static const struct of_device_id ad9467_of_match[] = {
diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
index a602429cdde4..a2b87f6b7a07 100644
--- a/drivers/iio/adc/ad_sigma_delta.c
+++ b/drivers/iio/adc/ad_sigma_delta.c
@@ -206,7 +206,7 @@ int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,
 	unsigned int mode, unsigned int channel)
 {
 	int ret;
-	unsigned long timeout;
+	unsigned long time_left;
 
 	ret = ad_sigma_delta_set_channel(sigma_delta, channel);
 	if (ret)
@@ -222,11 +222,11 @@ int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,
 		goto out;
 
 	sigma_delta->irq_dis = false;
-	enable_irq(sigma_delta->spi->irq);
-	timeout = wait_for_completion_timeout(&sigma_delta->completion, 2 * HZ);
-	if (timeout == 0) {
+	enable_irq(sigma_delta->irq_line);
+	time_left = wait_for_completion_timeout(&sigma_delta->completion, 2 * HZ);
+	if (time_left == 0) {
 		sigma_delta->irq_dis = true;
-		disable_irq_nosync(sigma_delta->spi->irq);
+		disable_irq_nosync(sigma_delta->irq_line);
 		ret = -EIO;
 	} else {
 		ret = 0;
@@ -295,7 +295,7 @@ int ad_sigma_delta_single_conversion(struct iio_dev *indio_dev,
 	ad_sigma_delta_set_mode(sigma_delta, AD_SD_MODE_SINGLE);
 
 	sigma_delta->irq_dis = false;
-	enable_irq(sigma_delta->spi->irq);
+	enable_irq(sigma_delta->irq_line);
 	ret = wait_for_completion_interruptible_timeout(
 			&sigma_delta->completion, HZ);
 
@@ -315,7 +315,7 @@ int ad_sigma_delta_single_conversion(struct iio_dev *indio_dev,
 
 out:
 	if (!sigma_delta->irq_dis) {
-		disable_irq_nosync(sigma_delta->spi->irq);
+		disable_irq_nosync(sigma_delta->irq_line);
 		sigma_delta->irq_dis = true;
 	}
 
@@ -396,7 +396,7 @@ static int ad_sd_buffer_postenable(struct iio_dev *indio_dev)
 		goto err_unlock;
 
 	sigma_delta->irq_dis = false;
-	enable_irq(sigma_delta->spi->irq);
+	enable_irq(sigma_delta->irq_line);
 
 	return 0;
 
@@ -414,7 +414,7 @@ static int ad_sd_buffer_postdisable(struct iio_dev *indio_dev)
 	wait_for_completion_timeout(&sigma_delta->completion, HZ);
 
 	if (!sigma_delta->irq_dis) {
-		disable_irq_nosync(sigma_delta->spi->irq);
+		disable_irq_nosync(sigma_delta->irq_line);
 		sigma_delta->irq_dis = true;
 	}
 
@@ -516,7 +516,7 @@ static irqreturn_t ad_sd_trigger_handler(int irq, void *p)
 irq_handled:
 	iio_trigger_notify_done(indio_dev->trig);
 	sigma_delta->irq_dis = false;
-	enable_irq(sigma_delta->spi->irq);
+	enable_irq(sigma_delta->irq_line);
 
 	return IRQ_HANDLED;
 }
@@ -587,13 +587,13 @@ static int devm_ad_sd_probe_trigger(struct device *dev, struct iio_dev *indio_de
 	sigma_delta->irq_dis = true;
 
 	/* the IRQ core clears IRQ_DISABLE_UNLAZY flag when freeing an IRQ */
-	irq_set_status_flags(sigma_delta->spi->irq, IRQ_DISABLE_UNLAZY);
+	irq_set_status_flags(sigma_delta->irq_line, IRQ_DISABLE_UNLAZY);
 
 	/* Allow overwriting the flags from firmware */
 	if (!irq_flags)
 		irq_flags = sigma_delta->info->irq_flags;
 
-	ret = devm_request_irq(dev, sigma_delta->spi->irq,
+	ret = devm_request_irq(dev, sigma_delta->irq_line,
 			       ad_sd_data_rdy_trig_poll,
 			       irq_flags | IRQF_NO_AUTOEN,
 			       indio_dev->name,
@@ -673,6 +673,11 @@ int ad_sd_init(struct ad_sigma_delta *sigma_delta, struct iio_dev *indio_dev,
 		}
 	}
 
+	if (info->irq_line)
+		sigma_delta->irq_line = info->irq_line;
+	else
+		sigma_delta->irq_line = spi->irq;
+
 	iio_device_set_drvdata(indio_dev, sigma_delta);
 
 	return 0;
diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c
index 4156639b3c8b..0cf0d81358fd 100644
--- a/drivers/iio/adc/adi-axi-adc.c
+++ b/drivers/iio/adc/adi-axi-adc.c
@@ -7,11 +7,13 @@
  */
 
 #include <linux/bitfield.h>
+#include <linux/cleanup.h>
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/delay.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
@@ -37,6 +39,9 @@
 #define   ADI_AXI_REG_RSTN_MMCM_RSTN		BIT(1)
 #define   ADI_AXI_REG_RSTN_RSTN			BIT(0)
 
+#define ADI_AXI_ADC_REG_CTRL			0x0044
+#define    ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK	BIT(1)
+
 /* ADC Channel controls */
 
 #define ADI_AXI_REG_CHAN_CTRL(c)		(0x0400 + (c) * 0x40)
@@ -51,14 +56,28 @@
 #define   ADI_AXI_REG_CHAN_CTRL_PN_TYPE_OWR	BIT(1)
 #define   ADI_AXI_REG_CHAN_CTRL_ENABLE		BIT(0)
 
+#define ADI_AXI_ADC_REG_CHAN_STATUS(c)		(0x0404 + (c) * 0x40)
+#define   ADI_AXI_ADC_CHAN_STAT_PN_MASK		GENMASK(2, 1)
+
+#define ADI_AXI_ADC_REG_CHAN_CTRL_3(c)		(0x0418 + (c) * 0x40)
+#define   ADI_AXI_ADC_CHAN_PN_SEL_MASK		GENMASK(19, 16)
+
+/* IO Delays */
+#define ADI_AXI_ADC_REG_DELAY(l)		(0x0800 + (l) * 0x4)
+#define   AXI_ADC_DELAY_CTRL_MASK		GENMASK(4, 0)
+
+#define ADI_AXI_ADC_MAX_IO_NUM_LANES		15
+
 #define ADI_AXI_REG_CHAN_CTRL_DEFAULTS		\
 	(ADI_AXI_REG_CHAN_CTRL_FMT_SIGNEXT |	\
 	 ADI_AXI_REG_CHAN_CTRL_FMT_EN |		\
 	 ADI_AXI_REG_CHAN_CTRL_ENABLE)
 
 struct adi_axi_adc_state {
-	struct regmap				*regmap;
-	struct device				*dev;
+	struct regmap *regmap;
+	struct device *dev;
+	/* lock to protect multiple accesses to the device registers */
+	struct mutex lock;
 };
 
 static int axi_adc_enable(struct iio_backend *back)
@@ -104,6 +123,100 @@ static int axi_adc_data_format_set(struct iio_backend *back, unsigned int chan,
 				  ADI_AXI_REG_CHAN_CTRL_FMT_MASK, val);
 }
 
+static int axi_adc_data_sample_trigger(struct iio_backend *back,
+				       enum iio_backend_sample_trigger trigger)
+{
+	struct adi_axi_adc_state *st = iio_backend_get_priv(back);
+
+	switch (trigger) {
+	case IIO_BACKEND_SAMPLE_TRIGGER_EDGE_RISING:
+		return regmap_clear_bits(st->regmap, ADI_AXI_ADC_REG_CTRL,
+					 ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK);
+	case IIO_BACKEND_SAMPLE_TRIGGER_EDGE_FALLING:
+		return regmap_set_bits(st->regmap, ADI_AXI_ADC_REG_CTRL,
+				       ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int axi_adc_iodelays_set(struct iio_backend *back, unsigned int lane,
+				unsigned int tap)
+{
+	struct adi_axi_adc_state *st = iio_backend_get_priv(back);
+	int ret;
+	u32 val;
+
+	if (tap > FIELD_MAX(AXI_ADC_DELAY_CTRL_MASK))
+		return -EINVAL;
+	if (lane > ADI_AXI_ADC_MAX_IO_NUM_LANES)
+		return -EINVAL;
+
+	guard(mutex)(&st->lock);
+	ret = regmap_write(st->regmap, ADI_AXI_ADC_REG_DELAY(lane), tap);
+	if (ret)
+		return ret;
+	/*
+	 * If readback is ~0, that means there are issues with the
+	 * delay_clk.
+	 */
+	ret = regmap_read(st->regmap, ADI_AXI_ADC_REG_DELAY(lane), &val);
+	if (ret)
+		return ret;
+	if (val == U32_MAX)
+		return -EIO;
+
+	return 0;
+}
+
+static int axi_adc_test_pattern_set(struct iio_backend *back,
+				    unsigned int chan,
+				    enum iio_backend_test_pattern pattern)
+{
+	struct adi_axi_adc_state *st = iio_backend_get_priv(back);
+
+	switch (pattern) {
+	case IIO_BACKEND_NO_TEST_PATTERN:
+		/* nothing to do */
+		return 0;
+	case IIO_BACKEND_ADI_PRBS_9A:
+		return regmap_update_bits(st->regmap, ADI_AXI_ADC_REG_CHAN_CTRL_3(chan),
+					  ADI_AXI_ADC_CHAN_PN_SEL_MASK,
+					  FIELD_PREP(ADI_AXI_ADC_CHAN_PN_SEL_MASK, 0));
+	default:
+		return -EINVAL;
+	}
+}
+
+static int axi_adc_chan_status(struct iio_backend *back, unsigned int chan,
+			       bool *error)
+{
+	struct adi_axi_adc_state *st = iio_backend_get_priv(back);
+	int ret;
+	u32 val;
+
+	guard(mutex)(&st->lock);
+	/* reset test bits by setting them */
+	ret = regmap_write(st->regmap, ADI_AXI_ADC_REG_CHAN_STATUS(chan),
+			   ADI_AXI_ADC_CHAN_STAT_PN_MASK);
+	if (ret)
+		return ret;
+
+	/* let's give enough time to validate or erroring the incoming pattern */
+	fsleep(1000);
+
+	ret = regmap_read(st->regmap, ADI_AXI_ADC_REG_CHAN_STATUS(chan), &val);
+	if (ret)
+		return ret;
+
+	if (ADI_AXI_ADC_CHAN_STAT_PN_MASK & val)
+		*error = true;
+	else
+		*error = false;
+
+	return 0;
+}
+
 static int axi_adc_chan_enable(struct iio_backend *back, unsigned int chan)
 {
 	struct adi_axi_adc_state *st = iio_backend_get_priv(back);
@@ -124,26 +237,12 @@ static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back,
 						 struct iio_dev *indio_dev)
 {
 	struct adi_axi_adc_state *st = iio_backend_get_priv(back);
-	struct iio_buffer *buffer;
 	const char *dma_name;
-	int ret;
 
 	if (device_property_read_string(st->dev, "dma-names", &dma_name))
 		dma_name = "rx";
 
-	buffer = iio_dmaengine_buffer_alloc(st->dev, dma_name);
-	if (IS_ERR(buffer)) {
-		dev_err(st->dev, "Could not get DMA buffer, %ld\n",
-			PTR_ERR(buffer));
-		return ERR_CAST(buffer);
-	}
-
-	indio_dev->modes |= INDIO_BUFFER_HARDWARE;
-	ret = iio_device_attach_buffer(indio_dev, buffer);
-	if (ret)
-		return ERR_PTR(ret);
-
-	return buffer;
+	return iio_dmaengine_buffer_setup(st->dev, indio_dev, dma_name);
 }
 
 static void axi_adc_free_buffer(struct iio_backend *back,
@@ -156,7 +255,6 @@ static const struct regmap_config axi_adc_regmap_config = {
 	.val_bits = 32,
 	.reg_bits = 32,
 	.reg_stride = 4,
-	.max_register = 0x0800,
 };
 
 static const struct iio_backend_ops adi_axi_adc_generic = {
@@ -167,6 +265,10 @@ static const struct iio_backend_ops adi_axi_adc_generic = {
 	.chan_disable = axi_adc_chan_disable,
 	.request_buffer = axi_adc_request_buffer,
 	.free_buffer = axi_adc_free_buffer,
+	.data_sample_trigger = axi_adc_data_sample_trigger,
+	.iodelay_set = axi_adc_iodelays_set,
+	.test_pattern_set = axi_adc_test_pattern_set,
+	.chan_status = axi_adc_chan_status,
 };
 
 static int adi_axi_adc_probe(struct platform_device *pdev)
@@ -175,6 +277,7 @@ static int adi_axi_adc_probe(struct platform_device *pdev)
 	struct adi_axi_adc_state *st;
 	void __iomem *base;
 	unsigned int ver;
+	struct clk *clk;
 	int ret;
 
 	st = devm_kzalloc(&pdev->dev, sizeof(*st), GFP_KERNEL);
@@ -195,6 +298,10 @@ static int adi_axi_adc_probe(struct platform_device *pdev)
 	if (!expected_ver)
 		return -ENODEV;
 
+	clk = devm_clk_get_enabled(&pdev->dev, NULL);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
 	/*
 	 * Force disable the core. Up to the frontend to enable us. And we can
 	 * still read/write registers...
@@ -207,9 +314,9 @@ static int adi_axi_adc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	if (*expected_ver > ver) {
+	if (ADI_AXI_PCORE_VER_MAJOR(ver) != ADI_AXI_PCORE_VER_MAJOR(*expected_ver)) {
 		dev_err(&pdev->dev,
-			"IP core version is too old. Expected %d.%.2d.%c, Reported %d.%.2d.%c\n",
+			"Major version mismatch. Expected %d.%.2d.%c, Reported %d.%.2d.%c\n",
 			ADI_AXI_PCORE_VER_MAJOR(*expected_ver),
 			ADI_AXI_PCORE_VER_MINOR(*expected_ver),
 			ADI_AXI_PCORE_VER_PATCH(*expected_ver),
diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
index 614de9644800..78fada4b7b1c 100644
--- a/drivers/iio/adc/exynos_adc.c
+++ b/drivers/iio/adc/exynos_adc.c
@@ -538,7 +538,7 @@ static int exynos_read_raw(struct iio_dev *indio_dev,
 				long mask)
 {
 	struct exynos_adc *info = iio_priv(indio_dev);
-	unsigned long timeout;
+	unsigned long time_left;
 	int ret;
 
 	if (mask == IIO_CHAN_INFO_SCALE) {
@@ -562,9 +562,9 @@ static int exynos_read_raw(struct iio_dev *indio_dev,
 	if (info->data->start_conv)
 		info->data->start_conv(info, chan->address);
 
-	timeout = wait_for_completion_timeout(&info->completion,
-					      EXYNOS_ADC_TIMEOUT);
-	if (timeout == 0) {
+	time_left = wait_for_completion_timeout(&info->completion,
+						EXYNOS_ADC_TIMEOUT);
+	if (time_left == 0) {
 		dev_warn(&indio_dev->dev, "Conversion timed out! Resetting\n");
 		if (info->data->init_hw)
 			info->data->init_hw(info);
@@ -583,7 +583,7 @@ static int exynos_read_raw(struct iio_dev *indio_dev,
 static int exynos_read_s3c64xx_ts(struct iio_dev *indio_dev, int *x, int *y)
 {
 	struct exynos_adc *info = iio_priv(indio_dev);
-	unsigned long timeout;
+	unsigned long time_left;
 	int ret;
 
 	mutex_lock(&info->lock);
@@ -597,9 +597,9 @@ static int exynos_read_s3c64xx_ts(struct iio_dev *indio_dev, int *x, int *y)
 	/* Select the ts channel to be used and Trigger conversion */
 	info->data->start_conv(info, ADC_S3C2410_MUX_TS);
 
-	timeout = wait_for_completion_timeout(&info->completion,
-					      EXYNOS_ADC_TIMEOUT);
-	if (timeout == 0) {
+	time_left = wait_for_completion_timeout(&info->completion,
+						EXYNOS_ADC_TIMEOUT);
+	if (time_left == 0) {
 		dev_warn(&indio_dev->dev, "Conversion timed out! Resetting\n");
 		if (info->data->init_hw)
 			info->data->init_hw(info);
diff --git a/drivers/iio/adc/fsl-imx25-gcq.c b/drivers/iio/adc/fsl-imx25-gcq.c
index 68c813de0605..b680690631db 100644
--- a/drivers/iio/adc/fsl-imx25-gcq.c
+++ b/drivers/iio/adc/fsl-imx25-gcq.c
@@ -12,8 +12,9 @@
 #include <linux/interrupt.h>
 #include <linux/mfd/imx25-tsadc.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 
@@ -107,7 +108,7 @@ static int mx25_gcq_get_raw_value(struct device *dev,
 				  struct mx25_gcq_priv *priv,
 				  int *val)
 {
-	long timeout;
+	long time_left;
 	u32 data;
 
 	/* Setup the configuration we want to use */
@@ -120,12 +121,12 @@ static int mx25_gcq_get_raw_value(struct device *dev,
 	regmap_update_bits(priv->regs, MX25_ADCQ_CR, MX25_ADCQ_CR_FQS,
 			   MX25_ADCQ_CR_FQS);
 
-	timeout = wait_for_completion_interruptible_timeout(
+	time_left = wait_for_completion_interruptible_timeout(
 		&priv->completed, MX25_GCQ_TIMEOUT);
-	if (timeout < 0) {
+	if (time_left < 0) {
 		dev_err(dev, "ADC wait for measurement failed\n");
-		return timeout;
-	} else if (timeout == 0) {
+		return time_left;
+	} else if (time_left == 0) {
 		dev_err(dev, "ADC timed out\n");
 		return -ETIMEDOUT;
 	}
@@ -198,8 +199,6 @@ static int mx25_gcq_ext_regulator_setup(struct device *dev,
 static int mx25_gcq_setup_cfgs(struct platform_device *pdev,
 			       struct mx25_gcq_priv *priv)
 {
-	struct device_node *np = pdev->dev.of_node;
-	struct device_node *child;
 	struct device *dev = &pdev->dev;
 	int ret, i;
 
@@ -216,37 +215,30 @@ static int mx25_gcq_setup_cfgs(struct platform_device *pdev,
 			     MX25_ADCQ_CFG_IN(i) |
 			     MX25_ADCQ_CFG_REFN_NGND2);
 
-	for_each_child_of_node(np, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		u32 reg;
 		u32 refp = MX25_ADCQ_CFG_REFP_INT;
 		u32 refn = MX25_ADCQ_CFG_REFN_NGND2;
 
-		ret = of_property_read_u32(child, "reg", &reg);
-		if (ret) {
-			dev_err(dev, "Failed to get reg property\n");
-			of_node_put(child);
-			return ret;
-		}
+		ret = fwnode_property_read_u32(child, "reg", &reg);
+		if (ret)
+			return dev_err_probe(dev, ret,
+					     "Failed to get reg property\n");
 
-		if (reg >= MX25_NUM_CFGS) {
-			dev_err(dev,
+		if (reg >= MX25_NUM_CFGS)
+			return dev_err_probe(dev, -EINVAL,
 				"reg value is greater than the number of available configuration registers\n");
-			of_node_put(child);
-			return -EINVAL;
-		}
 
-		of_property_read_u32(child, "fsl,adc-refp", &refp);
-		of_property_read_u32(child, "fsl,adc-refn", &refn);
+		fwnode_property_read_u32(child, "fsl,adc-refp", &refp);
+		fwnode_property_read_u32(child, "fsl,adc-refn", &refn);
 
 		switch (refp) {
 		case MX25_ADC_REFP_EXT:
 		case MX25_ADC_REFP_XP:
 		case MX25_ADC_REFP_YP:
 			ret = mx25_gcq_ext_regulator_setup(&pdev->dev, priv, refp);
-			if (ret) {
-				of_node_put(child);
+			if (ret)
 				return ret;
-			}
 			priv->channel_vref_mv[reg] =
 				regulator_get_voltage(priv->vref[refp]);
 			/* Conversion from uV to mV */
@@ -256,9 +248,8 @@ static int mx25_gcq_setup_cfgs(struct platform_device *pdev,
 			priv->channel_vref_mv[reg] = 2500;
 			break;
 		default:
-			dev_err(dev, "Invalid positive reference %d\n", refp);
-			of_node_put(child);
-			return -EINVAL;
+			return dev_err_probe(dev, -EINVAL,
+					     "Invalid positive reference %d\n", refp);
 		}
 
 		/*
@@ -268,16 +259,13 @@ static int mx25_gcq_setup_cfgs(struct platform_device *pdev,
 		refp = MX25_ADCQ_CFG_REFP(refp);
 		refn = MX25_ADCQ_CFG_REFN(refn);
 
-		if ((refp & MX25_ADCQ_CFG_REFP_MASK) != refp) {
-			dev_err(dev, "Invalid fsl,adc-refp property value\n");
-			of_node_put(child);
-			return -EINVAL;
-		}
-		if ((refn & MX25_ADCQ_CFG_REFN_MASK) != refn) {
-			dev_err(dev, "Invalid fsl,adc-refn property value\n");
-			of_node_put(child);
-			return -EINVAL;
-		}
+		if ((refp & MX25_ADCQ_CFG_REFP_MASK) != refp)
+			return dev_err_probe(dev, -EINVAL,
+					     "Invalid fsl,adc-refp property value\n");
+
+		if ((refn & MX25_ADCQ_CFG_REFN_MASK) != refn)
+			return dev_err_probe(dev, -EINVAL,
+					     "Invalid fsl,adc-refn property value\n");
 
 		regmap_update_bits(priv->regs, MX25_ADCQ_CFG(reg),
 				   MX25_ADCQ_CFG_REFP_MASK |
@@ -294,6 +282,17 @@ static int mx25_gcq_setup_cfgs(struct platform_device *pdev,
 	return 0;
 }
 
+static void mx25_gcq_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
+/* Custom handling needed as this driver doesn't own the clock */
+static void mx25_gcq_clk_disable(void *clk)
+{
+	clk_disable_unprepare(clk);
+}
+
 static int mx25_gcq_probe(struct platform_device *pdev)
 {
 	struct iio_dev *indio_dev;
@@ -315,10 +314,9 @@ static int mx25_gcq_probe(struct platform_device *pdev)
 		return PTR_ERR(mem);
 
 	priv->regs = devm_regmap_init_mmio(dev, mem, &mx25_gcq_regconfig);
-	if (IS_ERR(priv->regs)) {
-		dev_err(dev, "Failed to initialize regmap\n");
-		return PTR_ERR(priv->regs);
-	}
+	if (IS_ERR(priv->regs))
+		return dev_err_probe(dev, PTR_ERR(priv->regs),
+				     "Failed to initialize regmap\n");
 
 	mutex_init(&priv->lock);
 
@@ -334,69 +332,44 @@ static int mx25_gcq_probe(struct platform_device *pdev)
 
 		ret = regulator_enable(priv->vref[i]);
 		if (ret)
-			goto err_regulator_disable;
+			return ret;
+
+		ret = devm_add_action_or_reset(dev, mx25_gcq_reg_disable,
+					       priv->vref[i]);
+		if (ret)
+			return ret;
 	}
 
 	priv->clk = tsadc->clk;
 	ret = clk_prepare_enable(priv->clk);
-	if (ret) {
-		dev_err(dev, "Failed to enable clock\n");
-		goto err_vref_disable;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to enable clock\n");
+
+	ret = devm_add_action_or_reset(dev, mx25_gcq_clk_disable,
+				       priv->clk);
+	if (ret)
+		return ret;
 
 	ret = platform_get_irq(pdev, 0);
 	if (ret < 0)
-		goto err_clk_unprepare;
+		return ret;
 
 	priv->irq = ret;
-	ret = request_irq(priv->irq, mx25_gcq_irq, 0, pdev->name, priv);
-	if (ret) {
-		dev_err(dev, "Failed requesting IRQ\n");
-		goto err_clk_unprepare;
-	}
+	ret = devm_request_irq(dev, priv->irq, mx25_gcq_irq, 0, pdev->name,
+			       priv);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed requesting IRQ\n");
 
 	indio_dev->channels = mx25_gcq_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mx25_gcq_channels);
 	indio_dev->info = &mx25_gcq_iio_info;
 	indio_dev->name = driver_name;
 
-	ret = iio_device_register(indio_dev);
-	if (ret) {
-		dev_err(dev, "Failed to register iio device\n");
-		goto err_irq_free;
-	}
-
-	platform_set_drvdata(pdev, indio_dev);
+	ret = devm_iio_device_register(dev, indio_dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to register iio device\n");
 
 	return 0;
-
-err_irq_free:
-	free_irq(priv->irq, priv);
-err_clk_unprepare:
-	clk_disable_unprepare(priv->clk);
-err_vref_disable:
-	i = 4;
-err_regulator_disable:
-	for (; i-- > 0;) {
-		if (priv->vref[i])
-			regulator_disable(priv->vref[i]);
-	}
-	return ret;
-}
-
-static void mx25_gcq_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-	struct mx25_gcq_priv *priv = iio_priv(indio_dev);
-	int i;
-
-	iio_device_unregister(indio_dev);
-	free_irq(priv->irq, priv);
-	clk_disable_unprepare(priv->clk);
-	for (i = 4; i-- > 0;) {
-		if (priv->vref[i])
-			regulator_disable(priv->vref[i]);
-	}
 }
 
 static const struct of_device_id mx25_gcq_ids[] = {
@@ -411,7 +384,6 @@ static struct platform_driver mx25_gcq_driver = {
 		.of_match_table = mx25_gcq_ids,
 	},
 	.probe		= mx25_gcq_probe,
-	.remove_new	= mx25_gcq_remove,
 };
 module_platform_driver(mx25_gcq_driver);
 
diff --git a/drivers/iio/adc/hx711.c b/drivers/iio/adc/hx711.c
index c80c55fb8c6c..fef97c1d226a 100644
--- a/drivers/iio/adc/hx711.c
+++ b/drivers/iio/adc/hx711.c
@@ -7,7 +7,7 @@
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
 #include <linux/slab.h>
@@ -459,7 +459,6 @@ static const struct iio_chan_spec hx711_chan_spec[] = {
 static int hx711_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct device_node *np = dev->of_node;
 	struct hx711_data *hx711_data;
 	struct iio_dev *indio_dev;
 	int ret;
@@ -533,7 +532,7 @@ static int hx711_probe(struct platform_device *pdev)
 	hx711_data->gain_chan_a = 128;
 
 	hx711_data->clock_frequency = 400000;
-	ret = of_property_read_u32(np, "clock-frequency",
+	ret = device_property_read_u32(&pdev->dev, "clock-frequency",
 					&hx711_data->clock_frequency);
 
 	/*
diff --git a/drivers/iio/adc/intel_mrfld_adc.c b/drivers/iio/adc/intel_mrfld_adc.c
index 7263ad76124d..c7f40ae6e608 100644
--- a/drivers/iio/adc/intel_mrfld_adc.c
+++ b/drivers/iio/adc/intel_mrfld_adc.c
@@ -75,7 +75,7 @@ static int mrfld_adc_single_conv(struct iio_dev *indio_dev,
 	struct mrfld_adc *adc = iio_priv(indio_dev);
 	struct regmap *regmap = adc->regmap;
 	unsigned int req;
-	long timeout;
+	long time_left;
 	__be16 value;
 	int ret;
 
@@ -95,13 +95,13 @@ static int mrfld_adc_single_conv(struct iio_dev *indio_dev,
 	if (ret)
 		goto done;
 
-	timeout = wait_for_completion_interruptible_timeout(&adc->completion,
-							    BCOVE_ADC_TIMEOUT);
-	if (timeout < 0) {
-		ret = timeout;
+	time_left = wait_for_completion_interruptible_timeout(&adc->completion,
+							      BCOVE_ADC_TIMEOUT);
+	if (time_left < 0) {
+		ret = time_left;
 		goto done;
 	}
-	if (timeout == 0) {
+	if (time_left == 0) {
 		ret = -ETIMEDOUT;
 		goto done;
 	}
diff --git a/drivers/iio/adc/max11410.c b/drivers/iio/adc/max11410.c
index 6af829349b4e..45368850b220 100644
--- a/drivers/iio/adc/max11410.c
+++ b/drivers/iio/adc/max11410.c
@@ -696,7 +696,6 @@ static int max11410_parse_channels(struct max11410_state *st,
 	struct device *dev = &st->spi_dev->dev;
 	struct max11410_channel_config *cfg;
 	struct iio_chan_spec *channels;
-	struct fwnode_handle *child;
 	u32 reference, sig_path;
 	const char *node_name;
 	u32 inputs[2], scale;
@@ -720,7 +719,7 @@ static int max11410_parse_channels(struct max11410_state *st,
 	if (!st->channels)
 		return -ENOMEM;
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		node_name = fwnode_get_name(child);
 		if (fwnode_property_present(child, "diff-channels")) {
 			ret = fwnode_property_read_u32_array(child,
@@ -735,47 +734,37 @@ static int max11410_parse_channels(struct max11410_state *st,
 			inputs[1] = 0;
 			chanspec.differential = 0;
 		}
-		if (ret) {
-			fwnode_handle_put(child);
+		if (ret)
 			return ret;
-		}
 
 		if (inputs[0] > MAX11410_CHANNEL_INDEX_MAX ||
-		    inputs[1] > MAX11410_CHANNEL_INDEX_MAX) {
-			fwnode_handle_put(child);
+		    inputs[1] > MAX11410_CHANNEL_INDEX_MAX)
 			return dev_err_probe(&indio_dev->dev, -EINVAL,
 					     "Invalid channel index for %s, should be less than %d\n",
 					     node_name,
 					     MAX11410_CHANNEL_INDEX_MAX + 1);
-		}
 
 		cfg = &st->channels[chan_idx];
 
 		reference = MAX11410_REFSEL_AVDD_AGND;
 		fwnode_property_read_u32(child, "adi,reference", &reference);
-		if (reference > MAX11410_REFSEL_MAX) {
-			fwnode_handle_put(child);
+		if (reference > MAX11410_REFSEL_MAX)
 			return dev_err_probe(&indio_dev->dev, -EINVAL,
 					     "Invalid adi,reference value for %s, should be less than %d.\n",
 					     node_name, MAX11410_REFSEL_MAX + 1);
-		}
 
 		if (!max11410_get_vrefp(st, reference) ||
-		    (!max11410_get_vrefn(st, reference) && reference <= 2)) {
-			fwnode_handle_put(child);
+		    (!max11410_get_vrefn(st, reference) && reference <= 2))
 			return dev_err_probe(&indio_dev->dev, -EINVAL,
 					     "Invalid VREF configuration for %s, either specify corresponding VREF regulators or change adi,reference property.\n",
 					     node_name);
-		}
 
 		sig_path = MAX11410_PGA_SIG_PATH_BUFFERED;
 		fwnode_property_read_u32(child, "adi,input-mode", &sig_path);
-		if (sig_path > MAX11410_SIG_PATH_MAX) {
-			fwnode_handle_put(child);
+		if (sig_path > MAX11410_SIG_PATH_MAX)
 			return dev_err_probe(&indio_dev->dev, -EINVAL,
 					     "Invalid adi,input-mode value for %s, should be less than %d.\n",
 					     node_name, MAX11410_SIG_PATH_MAX + 1);
-		}
 
 		fwnode_property_read_u32(child, "settling-time-us",
 					 &cfg->settling_time_us);
@@ -793,10 +782,8 @@ static int max11410_parse_channels(struct max11410_state *st,
 			cfg->scale_avail = devm_kcalloc(dev, MAX11410_SCALE_AVAIL_SIZE * 2,
 							sizeof(*cfg->scale_avail),
 							GFP_KERNEL);
-			if (!cfg->scale_avail) {
-				fwnode_handle_put(child);
+			if (!cfg->scale_avail)
 				return -ENOMEM;
-			}
 
 			scale = max11410_get_scale(st, *cfg);
 			for (i = 0; i < MAX11410_SCALE_AVAIL_SIZE; i++) {
diff --git a/drivers/iio/adc/mcp3564.c b/drivers/iio/adc/mcp3564.c
index 311b613b6057..e2ae13f1e842 100644
--- a/drivers/iio/adc/mcp3564.c
+++ b/drivers/iio/adc/mcp3564.c
@@ -998,7 +998,6 @@ static int mcp3564_parse_fw_children(struct iio_dev *indio_dev)
 	struct mcp3564_state *adc = iio_priv(indio_dev);
 	struct device *dev = &adc->spi->dev;
 	struct iio_chan_spec *channels;
-	struct fwnode_handle *child;
 	struct iio_chan_spec chanspec = mcp3564_channel_template;
 	struct iio_chan_spec temp_chanspec = mcp3564_temp_channel_template;
 	struct iio_chan_spec burnout_chanspec = mcp3564_burnout_channel_template;
@@ -1025,7 +1024,7 @@ static int mcp3564_parse_fw_children(struct iio_dev *indio_dev)
 	if (!channels)
 		return dev_err_probe(dev, -ENOMEM, "Can't allocate memory\n");
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		node_name = fwnode_get_name(child);
 
 		if (fwnode_property_present(child, "diff-channels")) {
@@ -1033,26 +1032,25 @@ static int mcp3564_parse_fw_children(struct iio_dev *indio_dev)
 							     "diff-channels",
 							     inputs,
 							     ARRAY_SIZE(inputs));
+			if (ret)
+				return ret;
+
 			chanspec.differential = 1;
 		} else {
 			ret = fwnode_property_read_u32(child, "reg", &inputs[0]);
+			if (ret)
+				return ret;
 
 			chanspec.differential = 0;
 			inputs[1] = MCP3564_AGND;
 		}
-		if (ret) {
-			fwnode_handle_put(child);
-			return ret;
-		}
 
 		if (inputs[0] > MCP3564_INTERNAL_VCM ||
-		    inputs[1] > MCP3564_INTERNAL_VCM) {
-			fwnode_handle_put(child);
+		    inputs[1] > MCP3564_INTERNAL_VCM)
 			return dev_err_probe(&indio_dev->dev, -EINVAL,
 					     "Channel index > %d, for %s\n",
 					     MCP3564_INTERNAL_VCM + 1,
 					     node_name);
-		}
 
 		chanspec.address = (inputs[0] << 4) | inputs[1];
 		chanspec.channel = inputs[0];
diff --git a/drivers/iio/adc/mxs-lradc-adc.c b/drivers/iio/adc/mxs-lradc-adc.c
index 2e60c10ee4ff..8c7b64e78dbb 100644
--- a/drivers/iio/adc/mxs-lradc-adc.c
+++ b/drivers/iio/adc/mxs-lradc-adc.c
@@ -724,7 +724,6 @@ static int mxs_lradc_adc_probe(struct platform_device *pdev)
 	iio->dev.of_node = dev->parent->of_node;
 	iio->info = &mxs_lradc_adc_iio_info;
 	iio->modes = INDIO_DIRECT_MODE;
-	iio->masklength = LRADC_MAX_TOTAL_CHANS;
 
 	if (lradc->soc == IMX23_LRADC) {
 		iio->channels = mx23_lradc_chan_spec;
diff --git a/drivers/iio/adc/pac1934.c b/drivers/iio/adc/pac1934.c
index e0c2742da523..456f12faa348 100644
--- a/drivers/iio/adc/pac1934.c
+++ b/drivers/iio/adc/pac1934.c
@@ -787,6 +787,15 @@ static int pac1934_read_raw(struct iio_dev *indio_dev,
 	s64 curr_energy;
 	int ret, channel = chan->channel - 1;
 
+	/*
+	 * For AVG the index should be between 5 to 8.
+	 * To calculate PAC1934_CH_VOLTAGE_AVERAGE,
+	 * respectively PAC1934_CH_CURRENT real index, we need
+	 * to remove the added offset (PAC1934_MAX_NUM_CHANNELS).
+	 */
+	if (channel >= PAC1934_MAX_NUM_CHANNELS)
+		channel = channel - PAC1934_MAX_NUM_CHANNELS;
+
 	ret = pac1934_retrieve_data(info, PAC1934_MIN_UPDATE_WAIT_TIME_US);
 	if (ret < 0)
 		return ret;
@@ -1079,8 +1088,8 @@ static int pac1934_chip_identify(struct pac1934_chip_info *info)
  * documentation related to the ACPI device definition
  * https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ApplicationNotes/ApplicationNotes/PAC1934-Integration-Notes-for-Microsoft-Windows-10-and-Windows-11-Driver-Support-DS00002534.pdf
  */
-static bool pac1934_acpi_parse_channel_config(struct i2c_client *client,
-					      struct pac1934_chip_info *info)
+static int pac1934_acpi_parse_channel_config(struct i2c_client *client,
+					     struct pac1934_chip_info *info)
 {
 	acpi_handle handle;
 	union acpi_object *rez;
@@ -1095,7 +1104,7 @@ static bool pac1934_acpi_parse_channel_config(struct i2c_client *client,
 
 	rez = acpi_evaluate_dsm(handle, &guid, 0, PAC1934_ACPI_GET_NAMES_AND_MOHMS_VALS, NULL);
 	if (!rez)
-		return false;
+		return -EINVAL;
 
 	for (i = 0; i < rez->package.count; i += 2) {
 		idx = i / 2;
@@ -1118,7 +1127,7 @@ static bool pac1934_acpi_parse_channel_config(struct i2c_client *client,
 		 * and assign the default sampling rate
 		 */
 		info->sample_rate_value = PAC1934_DEFAULT_CHIP_SAMP_SPEED_HZ;
-		return true;
+		return 0;
 	}
 
 	for (i = 0; i < rez->package.count; i++) {
@@ -1131,7 +1140,7 @@ static bool pac1934_acpi_parse_channel_config(struct i2c_client *client,
 
 	rez = acpi_evaluate_dsm(handle, &guid, 1, PAC1934_ACPI_GET_BIPOLAR_SETTINGS, NULL);
 	if (!rez)
-		return false;
+		return -EINVAL;
 
 	bi_dir_mask = rez->package.elements[0].integer.value;
 	info->bi_dir[0] = ((bi_dir_mask & (1 << 3)) | (bi_dir_mask & (1 << 7))) != 0;
@@ -1143,19 +1152,18 @@ static bool pac1934_acpi_parse_channel_config(struct i2c_client *client,
 
 	rez = acpi_evaluate_dsm(handle, &guid, 1, PAC1934_ACPI_GET_SAMP, NULL);
 	if (!rez)
-		return false;
+		return -EINVAL;
 
 	info->sample_rate_value = rez->package.elements[0].integer.value;
 
 	ACPI_FREE(rez);
 
-	return true;
+	return 0;
 }
 
-static bool pac1934_of_parse_channel_config(struct i2c_client *client,
-					    struct pac1934_chip_info *info)
+static int pac1934_fw_parse_channel_config(struct i2c_client *client,
+					   struct pac1934_chip_info *info)
 {
-	struct fwnode_handle *node, *fwnode;
 	struct device *dev = &client->dev;
 	unsigned int current_channel;
 	int idx, ret;
@@ -1163,46 +1171,38 @@ static bool pac1934_of_parse_channel_config(struct i2c_client *client,
 	info->sample_rate_value = 1024;
 	current_channel = 1;
 
-	fwnode = dev_fwnode(dev);
-	fwnode_for_each_available_child_node(fwnode, node) {
+	device_for_each_child_node_scoped(dev, node) {
 		ret = fwnode_property_read_u32(node, "reg", &idx);
-		if (ret) {
-			dev_err_probe(dev, ret,
-				      "reading invalid channel index\n");
-			goto err_fwnode;
-		}
+		if (ret)
+			return dev_err_probe(dev, ret,
+					     "reading invalid channel index\n");
+
 		/* adjust idx to match channel index (1 to 4) from the datasheet */
 		idx--;
 
 		if (current_channel >= (info->phys_channels + 1) ||
-		    idx >= info->phys_channels || idx < 0) {
-			dev_err_probe(dev, -EINVAL,
-				      "%s: invalid channel_index %d value\n",
-				      fwnode_get_name(node), idx);
-			goto err_fwnode;
-		}
+		    idx >= info->phys_channels || idx < 0)
+			return dev_err_probe(dev, -EINVAL,
+					     "%s: invalid channel_index %d value\n",
+					     fwnode_get_name(node), idx);
 
 		/* enable channel */
 		info->active_channels[idx] = true;
 
 		ret = fwnode_property_read_u32(node, "shunt-resistor-micro-ohms",
 					       &info->shunts[idx]);
-		if (ret) {
-			dev_err_probe(dev, ret,
-				      "%s: invalid shunt-resistor value: %d\n",
-				      fwnode_get_name(node), info->shunts[idx]);
-			goto err_fwnode;
-		}
+		if (ret)
+			return dev_err_probe(dev, ret,
+					     "%s: invalid shunt-resistor value: %d\n",
+					     fwnode_get_name(node), info->shunts[idx]);
 
 		if (fwnode_property_present(node, "label")) {
 			ret = fwnode_property_read_string(node, "label",
 							  (const char **)&info->labels[idx]);
-			if (ret) {
-				dev_err_probe(dev, ret,
-					      "%s: invalid rail-name value\n",
-					      fwnode_get_name(node));
-				goto err_fwnode;
-			}
+			if (ret)
+				return dev_err_probe(dev, ret,
+						     "%s: invalid rail-name value\n",
+						     fwnode_get_name(node));
 		}
 
 		info->bi_dir[idx] = fwnode_property_read_bool(node, "bipolar");
@@ -1210,12 +1210,7 @@ static bool pac1934_of_parse_channel_config(struct i2c_client *client,
 		current_channel++;
 	}
 
-	return true;
-
-err_fwnode:
-	fwnode_handle_put(node);
-
-	return false;
+	return 0;
 }
 
 static void pac1934_cancel_delayed_work(void *dwork)
@@ -1485,7 +1480,6 @@ static int pac1934_probe(struct i2c_client *client)
 	const struct pac1934_features *chip;
 	struct iio_dev *indio_dev;
 	int cnt, ret;
-	bool match = false;
 	struct device *dev = &client->dev;
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*info));
@@ -1519,16 +1513,16 @@ static int pac1934_probe(struct i2c_client *client)
 	}
 
 	if (acpi_match_device(dev->driver->acpi_match_table, dev))
-		match = pac1934_acpi_parse_channel_config(client, info);
+		ret = pac1934_acpi_parse_channel_config(client, info);
 	else
 		/*
 		 * This makes it possible to use also ACPI PRP0001 for
 		 * registering the device using device tree properties.
 		 */
-		match = pac1934_of_parse_channel_config(client, info);
+		ret = pac1934_fw_parse_channel_config(client, info);
 
-	if (!match)
-		return dev_err_probe(dev, -EINVAL,
+	if (ret)
+		return dev_err_probe(dev, ret,
 				     "parameter parsing returned an error\n");
 
 	mutex_init(&info->lock);
diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c
index b6b612d733ff..9b69f40beed8 100644
--- a/drivers/iio/adc/qcom-spmi-adc5.c
+++ b/drivers/iio/adc/qcom-spmi-adc5.c
@@ -825,7 +825,6 @@ static int adc5_get_fw_data(struct adc5_chip *adc)
 	const struct adc5_channels *adc_chan;
 	struct iio_chan_spec *iio_chan;
 	struct adc5_channel_prop prop, *chan_props;
-	struct fwnode_handle *child;
 	unsigned int index = 0;
 	int ret;
 
@@ -849,12 +848,10 @@ static int adc5_get_fw_data(struct adc5_chip *adc)
 	if (!adc->data)
 		adc->data = &adc5_data_pmic;
 
-	device_for_each_child_node(adc->dev, child) {
+	device_for_each_child_node_scoped(adc->dev, child) {
 		ret = adc5_get_fw_channel_data(adc, &prop, child, adc->data);
-		if (ret) {
-			fwnode_handle_put(child);
+		if (ret)
 			return ret;
-		}
 
 		prop.scale_fn_type =
 			adc->data->adc_chans[prop.channel].scale_fn_type;
diff --git a/drivers/iio/adc/rcar-gyroadc.c b/drivers/iio/adc/rcar-gyroadc.c
index d524f2e8e927..15a21d2860e7 100644
--- a/drivers/iio/adc/rcar-gyroadc.c
+++ b/drivers/iio/adc/rcar-gyroadc.c
@@ -318,7 +318,6 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 	struct rcar_gyroadc *priv = iio_priv(indio_dev);
 	struct device *dev = priv->dev;
 	struct device_node *np = dev->of_node;
-	struct device_node *child;
 	struct regulator *vref;
 	unsigned int reg;
 	unsigned int adcmode = -1, childmode;
@@ -326,7 +325,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 	unsigned int num_channels;
 	int ret, first = 1;
 
-	for_each_child_of_node(np, child) {
+	for_each_available_child_of_node_scoped(np, child) {
 		of_id = of_match_node(rcar_gyroadc_child_match, child);
 		if (!of_id) {
 			dev_err(dev, "Ignoring unsupported ADC \"%pOFn\".",
@@ -352,7 +351,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 			num_channels = ARRAY_SIZE(rcar_gyroadc_iio_channels_3);
 			break;
 		default:
-			goto err_e_inval;
+			return -EINVAL;
 		}
 
 		/*
@@ -369,7 +368,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 				dev_err(dev,
 					"Failed to get child reg property of ADC \"%pOFn\".\n",
 					child);
-				goto err_of_node_put;
+				return ret;
 			}
 
 			/* Channel number is too high. */
@@ -377,7 +376,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 				dev_err(dev,
 					"Only %i channels supported with %pOFn, but reg = <%i>.\n",
 					num_channels, child, reg);
-				goto err_e_inval;
+				return -EINVAL;
 			}
 		}
 
@@ -386,7 +385,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 			dev_err(dev,
 				"Channel %i uses different ADC mode than the rest.\n",
 				reg);
-			goto err_e_inval;
+			return -EINVAL;
 		}
 
 		/* Channel is valid, grab the regulator. */
@@ -396,8 +395,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 		if (IS_ERR(vref)) {
 			dev_dbg(dev, "Channel %i 'vref' supply not connected.\n",
 				reg);
-			ret = PTR_ERR(vref);
-			goto err_of_node_put;
+			return PTR_ERR(vref);
 		}
 
 		priv->vref[reg] = vref;
@@ -422,7 +420,6 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 		 * we can stop parsing here.
 		 */
 		if (childmode == RCAR_GYROADC_MODE_SELECT_1_MB88101A) {
-			of_node_put(child);
 			break;
 		}
 	}
@@ -433,12 +430,6 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 	}
 
 	return 0;
-
-err_e_inval:
-	ret = -EINVAL;
-err_of_node_put:
-	of_node_put(child);
-	return ret;
 }
 
 static void rcar_gyroadc_deinit_supplies(struct iio_dev *indio_dev)
diff --git a/drivers/iio/adc/rtq6056.c b/drivers/iio/adc/rtq6056.c
index a5464737e527..bcb129840908 100644
--- a/drivers/iio/adc/rtq6056.c
+++ b/drivers/iio/adc/rtq6056.c
@@ -520,32 +520,20 @@ static int rtq6056_adc_write_raw(struct iio_dev *indio_dev,
 {
 	struct rtq6056_priv *priv = iio_priv(indio_dev);
 	const struct richtek_dev_data *devdata = priv->devdata;
-	int ret;
 
-	ret = iio_device_claim_direct_mode(indio_dev);
-	if (ret)
-		return ret;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		if (devdata->fixed_samp_freq) {
-			ret = -EINVAL;
-			break;
+	iio_device_claim_direct_scoped(return -EBUSY, indio_dev) {
+		switch (mask) {
+		case IIO_CHAN_INFO_SAMP_FREQ:
+			if (devdata->fixed_samp_freq)
+				return -EINVAL;
+			return rtq6056_adc_set_samp_freq(priv, chan, val);
+		case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+			return devdata->set_average(priv, val);
+		default:
+			return -EINVAL;
 		}
-
-		ret = rtq6056_adc_set_samp_freq(priv, chan, val);
-		break;
-	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
-		ret = devdata->set_average(priv, val);
-		break;
-	default:
-		ret = -EINVAL;
-		break;
 	}
-
-	iio_device_release_direct_mode(indio_dev);
-
-	return ret;
+	unreachable();
 }
 
 static const char *rtq6056_channel_labels[RTQ6056_MAX_CHANNEL] = {
diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c
index 0921ff2d9b3a..cd3a7e46ea53 100644
--- a/drivers/iio/adc/rzg2l_adc.c
+++ b/drivers/iio/adc/rzg2l_adc.c
@@ -302,7 +302,6 @@ static irqreturn_t rzg2l_adc_isr(int irq, void *dev_id)
 static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l_adc *adc)
 {
 	struct iio_chan_spec *chan_array;
-	struct fwnode_handle *fwnode;
 	struct rzg2l_adc_data *data;
 	unsigned int channel;
 	int num_channels;
@@ -330,17 +329,13 @@ static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l
 		return -ENOMEM;
 
 	i = 0;
-	device_for_each_child_node(&pdev->dev, fwnode) {
+	device_for_each_child_node_scoped(&pdev->dev, fwnode) {
 		ret = fwnode_property_read_u32(fwnode, "reg", &channel);
-		if (ret) {
-			fwnode_handle_put(fwnode);
+		if (ret)
 			return ret;
-		}
 
-		if (channel >= RZG2L_ADC_MAX_CHANNELS) {
-			fwnode_handle_put(fwnode);
+		if (channel >= RZG2L_ADC_MAX_CHANNELS)
 			return -EINVAL;
-		}
 
 		chan_array[i].type = IIO_VOLTAGE;
 		chan_array[i].indexed = 1;
diff --git a/drivers/iio/adc/spear_adc.c b/drivers/iio/adc/spear_adc.c
index 71362c2ddf89..b6dd096391c1 100644
--- a/drivers/iio/adc/spear_adc.c
+++ b/drivers/iio/adc/spear_adc.c
@@ -5,8 +5,10 @@
  * Copyright 2012 Stefan Roese <sr@denx.de>
  */
 
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/interrupt.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
@@ -15,8 +17,6 @@
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/completion.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -70,7 +70,7 @@ struct adc_regs_spear6xx {
 };
 
 struct spear_adc_state {
-	struct device_node *np;
+	struct device *dev;
 	struct adc_regs_spear3xx __iomem *adc_base_spear3xx;
 	struct adc_regs_spear6xx __iomem *adc_base_spear6xx;
 	struct clk *clk;
@@ -123,7 +123,7 @@ static void spear_adc_set_ctrl(struct spear_adc_state *st, int n,
 
 static u32 spear_adc_get_average(struct spear_adc_state *st)
 {
-	if (of_device_is_compatible(st->np, "st,spear600-adc")) {
+	if (device_is_compatible(st->dev, "st,spear600-adc")) {
 		return __raw_readl(&st->adc_base_spear6xx->average.msb) &
 			SPEAR_ADC_DATA_MASK;
 	} else {
@@ -134,7 +134,7 @@ static u32 spear_adc_get_average(struct spear_adc_state *st)
 
 static void spear_adc_set_scanrate(struct spear_adc_state *st, u32 rate)
 {
-	if (of_device_is_compatible(st->np, "st,spear600-adc")) {
+	if (device_is_compatible(st->dev, "st,spear600-adc")) {
 		__raw_writel(SPEAR600_ADC_SCAN_RATE_LO(rate),
 			     &st->adc_base_spear6xx->scan_rate_lo);
 		__raw_writel(SPEAR600_ADC_SCAN_RATE_HI(rate),
@@ -266,7 +266,6 @@ static const struct iio_info spear_adc_info = {
 
 static int spear_adc_probe(struct platform_device *pdev)
 {
-	struct device_node *np = pdev->dev.of_node;
 	struct device *dev = &pdev->dev;
 	struct spear_adc_state *st;
 	struct iio_dev *indio_dev = NULL;
@@ -279,11 +278,10 @@ static int spear_adc_probe(struct platform_device *pdev)
 				     "failed allocating iio device\n");
 
 	st = iio_priv(indio_dev);
+	st->dev = dev;
 
 	mutex_init(&st->lock);
 
-	st->np = np;
-
 	/*
 	 * SPEAr600 has a different register layout than other SPEAr SoC's
 	 * (e.g. SPEAr3xx). Let's provide two register base addresses
@@ -310,8 +308,7 @@ static int spear_adc_probe(struct platform_device *pdev)
 	if (ret < 0)
 		return dev_err_probe(dev, ret, "failed requesting interrupt\n");
 
-	if (of_property_read_u32(np, "sampling-frequency",
-				 &st->sampling_freq))
+	if (device_property_read_u32(dev, "sampling-frequency", &st->sampling_freq))
 		return dev_err_probe(dev, -EINVAL,
 				     "sampling-frequency missing in DT\n");
 
@@ -319,13 +316,13 @@ static int spear_adc_probe(struct platform_device *pdev)
 	 * Optional avg_samples defaults to 0, resulting in single data
 	 * conversion
 	 */
-	of_property_read_u32(np, "average-samples", &st->avg_samples);
+	device_property_read_u32(dev, "average-samples", &st->avg_samples);
 
 	/*
 	 * Optional vref_external defaults to 0, resulting in internal vref
 	 * selection
 	 */
-	of_property_read_u32(np, "vref-external", &st->vref_external);
+	device_property_read_u32(dev, "vref-external", &st->vref_external);
 
 	spear_adc_configure(st);
 
@@ -346,19 +343,17 @@ static int spear_adc_probe(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id spear_adc_dt_ids[] = {
 	{ .compatible = "st,spear600-adc", },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, spear_adc_dt_ids);
-#endif
 
 static struct platform_driver spear_adc_driver = {
 	.probe		= spear_adc_probe,
 	.driver		= {
 		.name	= SPEAR_ADC_MOD_NAME,
-		.of_match_table = of_match_ptr(spear_adc_dt_ids),
+		.of_match_table = spear_adc_dt_ids,
 	},
 };
 
diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c
index b5d3c9cea5c4..375aa7720f80 100644
--- a/drivers/iio/adc/stm32-adc.c
+++ b/drivers/iio/adc/stm32-adc.c
@@ -1408,7 +1408,7 @@ static int stm32_adc_single_conv(struct iio_dev *indio_dev,
 	struct stm32_adc *adc = iio_priv(indio_dev);
 	struct device *dev = indio_dev->dev.parent;
 	const struct stm32_adc_regspec *regs = adc->cfg->regs;
-	long timeout;
+	long time_left;
 	u32 val;
 	int ret;
 
@@ -1440,12 +1440,12 @@ static int stm32_adc_single_conv(struct iio_dev *indio_dev,
 
 	adc->cfg->start_conv(indio_dev, false);
 
-	timeout = wait_for_completion_interruptible_timeout(
+	time_left = wait_for_completion_interruptible_timeout(
 					&adc->completion, STM32_ADC_TIMEOUT);
-	if (timeout == 0) {
+	if (time_left == 0) {
 		ret = -ETIMEDOUT;
-	} else if (timeout < 0) {
-		ret = timeout;
+	} else if (time_left < 0) {
+		ret = time_left;
 	} else {
 		*res = adc->buffer[0];
 		ret = IIO_VAL_INT;
@@ -2187,58 +2187,52 @@ static int stm32_adc_generic_chan_init(struct iio_dev *indio_dev,
 				       struct iio_chan_spec *channels)
 {
 	const struct stm32_adc_info *adc_info = adc->cfg->adc_info;
-	struct fwnode_handle *child;
+	struct device *dev = &indio_dev->dev;
 	const char *name;
 	int val, scan_index = 0, ret;
 	bool differential;
 	u32 vin[2];
 
-	device_for_each_child_node(&indio_dev->dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		ret = fwnode_property_read_u32(child, "reg", &val);
-		if (ret) {
-			dev_err(&indio_dev->dev, "Missing channel index %d\n", ret);
-			goto err;
-		}
+		if (ret)
+			return dev_err_probe(dev, ret,
+					     "Missing channel index\n");
 
 		ret = fwnode_property_read_string(child, "label", &name);
 		/* label is optional */
 		if (!ret) {
-			if (strlen(name) >= STM32_ADC_CH_SZ) {
-				dev_err(&indio_dev->dev, "Label %s exceeds %d characters\n",
-					name, STM32_ADC_CH_SZ);
-				ret = -EINVAL;
-				goto err;
-			}
+			if (strlen(name) >= STM32_ADC_CH_SZ)
+				return dev_err_probe(dev, -EINVAL,
+						     "Label %s exceeds %d characters\n",
+						     name, STM32_ADC_CH_SZ);
+
 			strscpy(adc->chan_name[val], name, STM32_ADC_CH_SZ);
 			ret = stm32_adc_populate_int_ch(indio_dev, name, val);
 			if (ret == -ENOENT)
 				continue;
 			else if (ret)
-				goto err;
+				return ret;
 		} else if (ret != -EINVAL) {
-			dev_err(&indio_dev->dev, "Invalid label %d\n", ret);
-			goto err;
+			return dev_err_probe(dev, ret, "Invalid label\n");
 		}
 
-		if (val >= adc_info->max_channels) {
-			dev_err(&indio_dev->dev, "Invalid channel %d\n", val);
-			ret = -EINVAL;
-			goto err;
-		}
+		if (val >= adc_info->max_channels)
+			return dev_err_probe(dev, -EINVAL,
+					     "Invalid channel %d\n", val);
 
 		differential = false;
 		ret = fwnode_property_read_u32_array(child, "diff-channels", vin, 2);
 		/* diff-channels is optional */
 		if (!ret) {
 			differential = true;
-			if (vin[0] != val || vin[1] >= adc_info->max_channels) {
-				dev_err(&indio_dev->dev, "Invalid channel in%d-in%d\n",
-					vin[0], vin[1]);
-				goto err;
-			}
+			if (vin[0] != val || vin[1] >= adc_info->max_channels)
+				return dev_err_probe(dev, -EINVAL,
+						     "Invalid channel in%d-in%d\n",
+						     vin[0], vin[1]);
 		} else if (ret != -EINVAL) {
-			dev_err(&indio_dev->dev, "Invalid diff-channels property %d\n", ret);
-			goto err;
+			return dev_err_probe(dev, ret,
+					     "Invalid diff-channels property\n");
 		}
 
 		stm32_adc_chan_init_one(indio_dev, &channels[scan_index], val,
@@ -2247,11 +2241,9 @@ static int stm32_adc_generic_chan_init(struct iio_dev *indio_dev,
 		val = 0;
 		ret = fwnode_property_read_u32(child, "st,min-sample-time-ns", &val);
 		/* st,min-sample-time-ns is optional */
-		if (ret && ret != -EINVAL) {
-			dev_err(&indio_dev->dev, "Invalid st,min-sample-time-ns property %d\n",
-				ret);
-			goto err;
-		}
+		if (ret && ret != -EINVAL)
+			return dev_err_probe(dev, ret,
+					     "Invalid st,min-sample-time-ns property\n");
 
 		stm32_adc_smpr_init(adc, channels[scan_index].channel, val);
 		if (differential)
@@ -2261,11 +2253,6 @@ static int stm32_adc_generic_chan_init(struct iio_dev *indio_dev,
 	}
 
 	return scan_index;
-
-err:
-	fwnode_handle_put(child);
-
-	return ret;
 }
 
 static int stm32_adc_chan_fw_init(struct iio_dev *indio_dev, bool timestamping)
diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c
index ca08ae3108b2..9a47d2c87f05 100644
--- a/drivers/iio/adc/stm32-dfsdm-adc.c
+++ b/drivers/iio/adc/stm32-dfsdm-adc.c
@@ -1116,7 +1116,7 @@ static int stm32_dfsdm_single_conv(struct iio_dev *indio_dev,
 				   const struct iio_chan_spec *chan, int *res)
 {
 	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
-	long timeout;
+	long time_left;
 	int ret;
 
 	reinit_completion(&adc->completion);
@@ -1141,17 +1141,17 @@ static int stm32_dfsdm_single_conv(struct iio_dev *indio_dev,
 		goto stop_dfsdm;
 	}
 
-	timeout = wait_for_completion_interruptible_timeout(&adc->completion,
-							    DFSDM_TIMEOUT);
+	time_left = wait_for_completion_interruptible_timeout(&adc->completion,
+							      DFSDM_TIMEOUT);
 
 	/* Mask IRQ for regular conversion achievement*/
 	regmap_update_bits(adc->dfsdm->regmap, DFSDM_CR2(adc->fl_id),
 			   DFSDM_CR2_REOCIE_MASK, DFSDM_CR2_REOCIE(0));
 
-	if (timeout == 0)
+	if (time_left == 0)
 		ret = -ETIMEDOUT;
-	else if (timeout < 0)
-		ret = timeout;
+	else if (time_left < 0)
+		ret = time_left;
 	else
 		ret = IIO_VAL_INT;
 
diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c
index 6ae967e4d8fa..d3363d02f292 100644
--- a/drivers/iio/adc/ti-ads1015.c
+++ b/drivers/iio/adc/ti-ads1015.c
@@ -902,10 +902,9 @@ static int ads1015_client_get_channels_config(struct i2c_client *client)
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct ads1015_data *data = iio_priv(indio_dev);
 	struct device *dev = &client->dev;
-	struct fwnode_handle *node;
 	int i = -1;
 
-	device_for_each_child_node(dev, node) {
+	device_for_each_child_node_scoped(dev, node) {
 		u32 pval;
 		unsigned int channel;
 		unsigned int pga = ADS1015_DEFAULT_PGA;
@@ -927,7 +926,6 @@ static int ads1015_client_get_channels_config(struct i2c_client *client)
 			pga = pval;
 			if (pga > 5) {
 				dev_err(dev, "invalid gain on %pfw\n", node);
-				fwnode_handle_put(node);
 				return -EINVAL;
 			}
 		}
@@ -936,7 +934,6 @@ static int ads1015_client_get_channels_config(struct i2c_client *client)
 			data_rate = pval;
 			if (data_rate > 7) {
 				dev_err(dev, "invalid data_rate on %pfw\n", node);
-				fwnode_handle_put(node);
 				return -EINVAL;
 			}
 		}
diff --git a/drivers/iio/adc/ti-ads131e08.c b/drivers/iio/adc/ti-ads131e08.c
index fcfc46254313..cb04a29b3dba 100644
--- a/drivers/iio/adc/ti-ads131e08.c
+++ b/drivers/iio/adc/ti-ads131e08.c
@@ -694,7 +694,6 @@ static int ads131e08_alloc_channels(struct iio_dev *indio_dev)
 	struct ads131e08_channel_config *channel_config;
 	struct device *dev = &st->spi->dev;
 	struct iio_chan_spec *channels;
-	struct fwnode_handle *node;
 	unsigned int channel, tmp;
 	int num_channels, i, ret;
 
@@ -736,10 +735,10 @@ static int ads131e08_alloc_channels(struct iio_dev *indio_dev)
 		return -ENOMEM;
 
 	i = 0;
-	device_for_each_child_node(dev, node) {
+	device_for_each_child_node_scoped(dev, node) {
 		ret = fwnode_property_read_u32(node, "reg", &channel);
 		if (ret)
-			goto err_child_out;
+			return ret;
 
 		ret = fwnode_property_read_u32(node, "ti,gain", &tmp);
 		if (ret) {
@@ -747,7 +746,7 @@ static int ads131e08_alloc_channels(struct iio_dev *indio_dev)
 		} else {
 			ret = ads131e08_pga_gain_to_field_value(st, tmp);
 			if (ret < 0)
-				goto err_child_out;
+				return ret;
 
 			channel_config[i].pga_gain = tmp;
 		}
@@ -758,7 +757,7 @@ static int ads131e08_alloc_channels(struct iio_dev *indio_dev)
 		} else {
 			ret = ads131e08_validate_channel_mux(st, tmp);
 			if (ret)
-				goto err_child_out;
+				return ret;
 
 			channel_config[i].mux = tmp;
 		}
@@ -785,9 +784,6 @@ static int ads131e08_alloc_channels(struct iio_dev *indio_dev)
 
 	return 0;
 
-err_child_out:
-	fwnode_handle_put(node);
-	return ret;
 }
 
 static void ads131e08_regulator_disable(void *data)
diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
index 4a247ca25a44..0253064fadec 100644
--- a/drivers/iio/adc/twl4030-madc.c
+++ b/drivers/iio/adc/twl4030-madc.c
@@ -19,10 +19,12 @@
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/delay.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/mfd/twl.h>
-#include <linux/module.h>
 #include <linux/stddef.h>
 #include <linux/mutex.h>
 #include <linux/bitops.h>
@@ -30,7 +32,6 @@
 #include <linux/types.h>
 #include <linux/gfp.h>
 #include <linux/err.h>
-#include <linux/of.h>
 #include <linux/regulator/consumer.h>
 
 #include <linux/iio/iio.h>
@@ -744,14 +745,14 @@ static int twl4030_madc_set_power(struct twl4030_madc_data *madc, int on)
  */
 static int twl4030_madc_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
+	struct twl4030_madc_platform_data *pdata = dev_get_platdata(dev);
 	struct twl4030_madc_data *madc;
-	struct twl4030_madc_platform_data *pdata = dev_get_platdata(&pdev->dev);
-	struct device_node *np = pdev->dev.of_node;
 	int irq, ret;
 	u8 regval;
 	struct iio_dev *iio_dev = NULL;
 
-	if (!pdata && !np) {
+	if (!pdata && !dev_fwnode(dev)) {
 		dev_err(&pdev->dev, "neither platform data nor Device Tree node available\n");
 		return -EINVAL;
 	}
@@ -779,7 +780,7 @@ static int twl4030_madc_probe(struct platform_device *pdev)
 	if (pdata)
 		madc->use_second_irq = (pdata->irq_line != 1);
 	else
-		madc->use_second_irq = of_property_read_bool(np,
+		madc->use_second_irq = device_property_read_bool(dev,
 				       "ti,system-uses-second-madc-irq");
 
 	madc->imr = madc->use_second_irq ? TWL4030_MADC_IMR2 :
@@ -905,20 +906,18 @@ static void twl4030_madc_remove(struct platform_device *pdev)
 	regulator_disable(madc->usb3v1);
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id twl_madc_of_match[] = {
 	{ .compatible = "ti,twl4030-madc", },
-	{ },
+	{ }
 };
 MODULE_DEVICE_TABLE(of, twl_madc_of_match);
-#endif
 
 static struct platform_driver twl4030_madc_driver = {
 	.probe = twl4030_madc_probe,
 	.remove_new = twl4030_madc_remove,
 	.driver = {
 		   .name = "twl4030_madc",
-		   .of_match_table = of_match_ptr(twl_madc_of_match),
+		   .of_match_table = twl_madc_of_match,
 	},
 };
 
diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c
index 78bf55438b2c..6a3db2bce460 100644
--- a/drivers/iio/adc/twl6030-gpadc.c
+++ b/drivers/iio/adc/twl6030-gpadc.c
@@ -519,7 +519,7 @@ static int twl6030_gpadc_read_raw(struct iio_dev *indio_dev,
 {
 	struct twl6030_gpadc_data *gpadc = iio_priv(indio_dev);
 	int ret;
-	long timeout;
+	long time_left;
 
 	mutex_lock(&gpadc->lock);
 
@@ -529,12 +529,12 @@ static int twl6030_gpadc_read_raw(struct iio_dev *indio_dev,
 		goto err;
 	}
 	/* wait for conversion to complete */
-	timeout = wait_for_completion_interruptible_timeout(
+	time_left = wait_for_completion_interruptible_timeout(
 				&gpadc->irq_complete, msecs_to_jiffies(5000));
-	if (timeout == 0) {
+	if (time_left == 0) {
 		ret = -ETIMEDOUT;
 		goto err;
-	} else if (timeout < 0) {
+	} else if (time_left < 0) {
 		ret = -EINTR;
 		goto err;
 	}
diff --git a/drivers/iio/addac/ad74413r.c b/drivers/iio/addac/ad74413r.c
index 7af3e4b8fe3b..cd26a16dc0ff 100644
--- a/drivers/iio/addac/ad74413r.c
+++ b/drivers/iio/addac/ad74413r.c
@@ -1255,21 +1255,15 @@ static int ad74413r_parse_channel_config(struct iio_dev *indio_dev,
 static int ad74413r_parse_channel_configs(struct iio_dev *indio_dev)
 {
 	struct ad74413r_state *st = iio_priv(indio_dev);
-	struct fwnode_handle *channel_node = NULL;
 	int ret;
 
-	fwnode_for_each_available_child_node(dev_fwnode(st->dev), channel_node) {
+	device_for_each_child_node_scoped(st->dev, channel_node) {
 		ret = ad74413r_parse_channel_config(indio_dev, channel_node);
 		if (ret)
-			goto put_channel_node;
+			return ret;
 	}
 
 	return 0;
-
-put_channel_node:
-	fwnode_handle_put(channel_node);
-
-	return ret;
 }
 
 static int ad74413r_setup_channels(struct iio_dev *indio_dev)
diff --git a/drivers/iio/buffer/industrialio-buffer-dma.c b/drivers/iio/buffer/industrialio-buffer-dma.c
index 5610ba67925e..13b1a858969e 100644
--- a/drivers/iio/buffer/industrialio-buffer-dma.c
+++ b/drivers/iio/buffer/industrialio-buffer-dma.c
@@ -195,6 +195,18 @@ static void _iio_dma_buffer_block_done(struct iio_dma_buffer_block *block)
 		block->state = IIO_BLOCK_STATE_DONE;
 }
 
+static void iio_dma_buffer_queue_wake(struct iio_dma_buffer_queue *queue)
+{
+	__poll_t flags;
+
+	if (queue->buffer.direction == IIO_BUFFER_DIRECTION_IN)
+		flags = EPOLLIN | EPOLLRDNORM;
+	else
+		flags = EPOLLOUT | EPOLLWRNORM;
+
+	wake_up_interruptible_poll(&queue->buffer.pollq, flags);
+}
+
 /**
  * iio_dma_buffer_block_done() - Indicate that a block has been completed
  * @block: The completed block
@@ -212,7 +224,7 @@ void iio_dma_buffer_block_done(struct iio_dma_buffer_block *block)
 	spin_unlock_irqrestore(&queue->list_lock, flags);
 
 	iio_buffer_block_put_atomic(block);
-	wake_up_interruptible_poll(&queue->buffer.pollq, EPOLLIN | EPOLLRDNORM);
+	iio_dma_buffer_queue_wake(queue);
 }
 EXPORT_SYMBOL_GPL(iio_dma_buffer_block_done);
 
@@ -241,7 +253,7 @@ void iio_dma_buffer_block_list_abort(struct iio_dma_buffer_queue *queue,
 	}
 	spin_unlock_irqrestore(&queue->list_lock, flags);
 
-	wake_up_interruptible_poll(&queue->buffer.pollq, EPOLLIN | EPOLLRDNORM);
+	iio_dma_buffer_queue_wake(queue);
 }
 EXPORT_SYMBOL_GPL(iio_dma_buffer_block_list_abort);
 
@@ -335,8 +347,24 @@ int iio_dma_buffer_request_update(struct iio_buffer *buffer)
 			queue->fileio.blocks[i] = block;
 		}
 
-		block->state = IIO_BLOCK_STATE_QUEUED;
-		list_add_tail(&block->head, &queue->incoming);
+		/*
+		 * block->bytes_used may have been modified previously, e.g. by
+		 * iio_dma_buffer_block_list_abort(). Reset it here to the
+		 * block's so that iio_dma_buffer_io() will work.
+		 */
+		block->bytes_used = block->size;
+
+		/*
+		 * If it's an input buffer, mark the block as queued, and
+		 * iio_dma_buffer_enable() will submit it. Otherwise mark it as
+		 * done, which means it's ready to be dequeued.
+		 */
+		if (queue->buffer.direction == IIO_BUFFER_DIRECTION_IN) {
+			block->state = IIO_BLOCK_STATE_QUEUED;
+			list_add_tail(&block->head, &queue->incoming);
+		} else {
+			block->state = IIO_BLOCK_STATE_DONE;
+		}
 	}
 
 out_unlock:
@@ -488,20 +516,12 @@ static struct iio_dma_buffer_block *iio_dma_buffer_dequeue(
 	return block;
 }
 
-/**
- * iio_dma_buffer_read() - DMA buffer read callback
- * @buffer: Buffer to read form
- * @n: Number of bytes to read
- * @user_buffer: Userspace buffer to copy the data to
- *
- * Should be used as the read callback for iio_buffer_access_ops
- * struct for DMA buffers.
- */
-int iio_dma_buffer_read(struct iio_buffer *buffer, size_t n,
-	char __user *user_buffer)
+static int iio_dma_buffer_io(struct iio_buffer *buffer, size_t n,
+			     char __user *user_buffer, bool is_from_user)
 {
 	struct iio_dma_buffer_queue *queue = iio_buffer_to_queue(buffer);
 	struct iio_dma_buffer_block *block;
+	void *addr;
 	int ret;
 
 	if (n < buffer->bytes_per_datum)
@@ -524,8 +544,13 @@ int iio_dma_buffer_read(struct iio_buffer *buffer, size_t n,
 	n = rounddown(n, buffer->bytes_per_datum);
 	if (n > block->bytes_used - queue->fileio.pos)
 		n = block->bytes_used - queue->fileio.pos;
+	addr = block->vaddr + queue->fileio.pos;
 
-	if (copy_to_user(user_buffer, block->vaddr + queue->fileio.pos, n)) {
+	if (is_from_user)
+		ret = copy_from_user(addr, user_buffer, n);
+	else
+		ret = copy_to_user(user_buffer, addr, n);
+	if (ret) {
 		ret = -EFAULT;
 		goto out_unlock;
 	}
@@ -544,16 +569,49 @@ out_unlock:
 
 	return ret;
 }
+
+/**
+ * iio_dma_buffer_read() - DMA buffer read callback
+ * @buffer: Buffer to read form
+ * @n: Number of bytes to read
+ * @user_buffer: Userspace buffer to copy the data to
+ *
+ * Should be used as the read callback for iio_buffer_access_ops
+ * struct for DMA buffers.
+ */
+int iio_dma_buffer_read(struct iio_buffer *buffer, size_t n,
+			char __user *user_buffer)
+{
+	return iio_dma_buffer_io(buffer, n, user_buffer, false);
+}
 EXPORT_SYMBOL_GPL(iio_dma_buffer_read);
 
 /**
- * iio_dma_buffer_data_available() - DMA buffer data_available callback
- * @buf: Buffer to check for data availability
+ * iio_dma_buffer_write() - DMA buffer write callback
+ * @buffer: Buffer to read form
+ * @n: Number of bytes to read
+ * @user_buffer: Userspace buffer to copy the data from
  *
- * Should be used as the data_available callback for iio_buffer_access_ops
+ * Should be used as the write callback for iio_buffer_access_ops
  * struct for DMA buffers.
  */
-size_t iio_dma_buffer_data_available(struct iio_buffer *buf)
+int iio_dma_buffer_write(struct iio_buffer *buffer, size_t n,
+			 const char __user *user_buffer)
+{
+	return iio_dma_buffer_io(buffer, n,
+				 (__force __user char *)user_buffer, true);
+}
+EXPORT_SYMBOL_GPL(iio_dma_buffer_write);
+
+/**
+ * iio_dma_buffer_usage() - DMA buffer data_available and
+ * space_available callback
+ * @buf: Buffer to check for data availability
+ *
+ * Should be used as the data_available and space_available callbacks for
+ * iio_buffer_access_ops struct for DMA buffers.
+ */
+size_t iio_dma_buffer_usage(struct iio_buffer *buf)
 {
 	struct iio_dma_buffer_queue *queue = iio_buffer_to_queue(buf);
 	struct iio_dma_buffer_block *block;
@@ -586,7 +644,7 @@ size_t iio_dma_buffer_data_available(struct iio_buffer *buf)
 
 	return data_available;
 }
-EXPORT_SYMBOL_GPL(iio_dma_buffer_data_available);
+EXPORT_SYMBOL_GPL(iio_dma_buffer_usage);
 
 /**
  * iio_dma_buffer_set_bytes_per_datum() - DMA buffer set_bytes_per_datum callback
diff --git a/drivers/iio/buffer/industrialio-buffer-dmaengine.c b/drivers/iio/buffer/industrialio-buffer-dmaengine.c
index a18c1da292af..918f6f8d65b6 100644
--- a/drivers/iio/buffer/industrialio-buffer-dmaengine.c
+++ b/drivers/iio/buffer/industrialio-buffer-dmaengine.c
@@ -64,14 +64,25 @@ static int iio_dmaengine_buffer_submit_block(struct iio_dma_buffer_queue *queue,
 	struct dmaengine_buffer *dmaengine_buffer =
 		iio_buffer_to_dmaengine_buffer(&queue->buffer);
 	struct dma_async_tx_descriptor *desc;
+	enum dma_transfer_direction dma_dir;
+	size_t max_size;
 	dma_cookie_t cookie;
 
-	block->bytes_used = min(block->size, dmaengine_buffer->max_size);
-	block->bytes_used = round_down(block->bytes_used,
-			dmaengine_buffer->align);
+	max_size = min(block->size, dmaengine_buffer->max_size);
+	max_size = round_down(max_size, dmaengine_buffer->align);
+
+	if (queue->buffer.direction == IIO_BUFFER_DIRECTION_IN) {
+		block->bytes_used = max_size;
+		dma_dir = DMA_DEV_TO_MEM;
+	} else {
+		dma_dir = DMA_MEM_TO_DEV;
+	}
+
+	if (!block->bytes_used || block->bytes_used > max_size)
+		return -EINVAL;
 
 	desc = dmaengine_prep_slave_single(dmaengine_buffer->chan,
-		block->phys_addr, block->bytes_used, DMA_DEV_TO_MEM,
+		block->phys_addr, block->bytes_used, dma_dir,
 		DMA_PREP_INTERRUPT);
 	if (!desc)
 		return -ENOMEM;
@@ -112,12 +123,14 @@ static void iio_dmaengine_buffer_release(struct iio_buffer *buf)
 
 static const struct iio_buffer_access_funcs iio_dmaengine_buffer_ops = {
 	.read = iio_dma_buffer_read,
+	.write = iio_dma_buffer_write,
 	.set_bytes_per_datum = iio_dma_buffer_set_bytes_per_datum,
 	.set_length = iio_dma_buffer_set_length,
 	.request_update = iio_dma_buffer_request_update,
 	.enable = iio_dma_buffer_enable,
 	.disable = iio_dma_buffer_disable,
-	.data_available = iio_dma_buffer_data_available,
+	.data_available = iio_dma_buffer_usage,
+	.space_available = iio_dma_buffer_usage,
 	.release = iio_dmaengine_buffer_release,
 
 	.modes = INDIO_BUFFER_HARDWARE,
@@ -159,7 +172,7 @@ static const struct iio_dev_attr *iio_dmaengine_buffer_attrs[] = {
  * Once done using the buffer iio_dmaengine_buffer_free() should be used to
  * release it.
  */
-struct iio_buffer *iio_dmaengine_buffer_alloc(struct device *dev,
+static struct iio_buffer *iio_dmaengine_buffer_alloc(struct device *dev,
 	const char *channel)
 {
 	struct dmaengine_buffer *dmaengine_buffer;
@@ -210,7 +223,6 @@ err_free:
 	kfree(dmaengine_buffer);
 	return ERR_PTR(ret);
 }
-EXPORT_SYMBOL_NS_GPL(iio_dmaengine_buffer_alloc, IIO_DMAENGINE_BUFFER);
 
 /**
  * iio_dmaengine_buffer_free() - Free dmaengine buffer
@@ -230,66 +242,64 @@ void iio_dmaengine_buffer_free(struct iio_buffer *buffer)
 }
 EXPORT_SYMBOL_NS_GPL(iio_dmaengine_buffer_free, IIO_DMAENGINE_BUFFER);
 
-static void __devm_iio_dmaengine_buffer_free(void *buffer)
-{
-	iio_dmaengine_buffer_free(buffer);
-}
-
-/**
- * devm_iio_dmaengine_buffer_alloc() - Resource-managed iio_dmaengine_buffer_alloc()
- * @dev: Parent device for the buffer
- * @channel: DMA channel name, typically "rx".
- *
- * This allocates a new IIO buffer which internally uses the DMAengine framework
- * to perform its transfers. The parent device will be used to request the DMA
- * channel.
- *
- * The buffer will be automatically de-allocated once the device gets destroyed.
- */
-static struct iio_buffer *devm_iio_dmaengine_buffer_alloc(struct device *dev,
-	const char *channel)
+struct iio_buffer *iio_dmaengine_buffer_setup_ext(struct device *dev,
+						  struct iio_dev *indio_dev,
+						  const char *channel,
+						  enum iio_buffer_direction dir)
 {
 	struct iio_buffer *buffer;
 	int ret;
 
 	buffer = iio_dmaengine_buffer_alloc(dev, channel);
 	if (IS_ERR(buffer))
-		return buffer;
+		return ERR_CAST(buffer);
 
-	ret = devm_add_action_or_reset(dev, __devm_iio_dmaengine_buffer_free,
-				       buffer);
-	if (ret)
+	indio_dev->modes |= INDIO_BUFFER_HARDWARE;
+
+	buffer->direction = dir;
+
+	ret = iio_device_attach_buffer(indio_dev, buffer);
+	if (ret) {
+		iio_dmaengine_buffer_free(buffer);
 		return ERR_PTR(ret);
+	}
 
 	return buffer;
 }
+EXPORT_SYMBOL_NS_GPL(iio_dmaengine_buffer_setup_ext, IIO_DMAENGINE_BUFFER);
+
+static void __devm_iio_dmaengine_buffer_free(void *buffer)
+{
+	iio_dmaengine_buffer_free(buffer);
+}
 
 /**
- * devm_iio_dmaengine_buffer_setup() - Setup a DMA buffer for an IIO device
+ * devm_iio_dmaengine_buffer_setup_ext() - Setup a DMA buffer for an IIO device
  * @dev: Parent device for the buffer
  * @indio_dev: IIO device to which to attach this buffer.
  * @channel: DMA channel name, typically "rx".
+ * @dir: Direction of buffer (in or out)
  *
  * This allocates a new IIO buffer with devm_iio_dmaengine_buffer_alloc()
  * and attaches it to an IIO device with iio_device_attach_buffer().
  * It also appends the INDIO_BUFFER_HARDWARE mode to the supported modes of the
  * IIO device.
  */
-int devm_iio_dmaengine_buffer_setup(struct device *dev,
-				    struct iio_dev *indio_dev,
-				    const char *channel)
+int devm_iio_dmaengine_buffer_setup_ext(struct device *dev,
+					struct iio_dev *indio_dev,
+					const char *channel,
+					enum iio_buffer_direction dir)
 {
 	struct iio_buffer *buffer;
 
-	buffer = devm_iio_dmaengine_buffer_alloc(dev, channel);
+	buffer = iio_dmaengine_buffer_setup_ext(dev, indio_dev, channel, dir);
 	if (IS_ERR(buffer))
 		return PTR_ERR(buffer);
 
-	indio_dev->modes |= INDIO_BUFFER_HARDWARE;
-
-	return iio_device_attach_buffer(indio_dev, buffer);
+	return devm_add_action_or_reset(dev, __devm_iio_dmaengine_buffer_free,
+					buffer);
 }
-EXPORT_SYMBOL_NS_GPL(devm_iio_dmaengine_buffer_setup, IIO_DMAENGINE_BUFFER);
+EXPORT_SYMBOL_NS_GPL(devm_iio_dmaengine_buffer_setup_ext, IIO_DMAENGINE_BUFFER);
 
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 MODULE_DESCRIPTION("DMA buffer for the IIO framework");
diff --git a/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c b/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c
index 3b0f9598a7c7..fa205f17bd90 100644
--- a/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c
+++ b/drivers/iio/common/inv_sensors/inv_sensors_timestamp.c
@@ -70,13 +70,13 @@ int inv_sensors_timestamp_update_odr(struct inv_sensors_timestamp *ts,
 }
 EXPORT_SYMBOL_NS_GPL(inv_sensors_timestamp_update_odr, IIO_INV_SENSORS_TIMESTAMP);
 
-static bool inv_validate_period(struct inv_sensors_timestamp *ts, uint32_t period, uint32_t mult)
+static bool inv_validate_period(struct inv_sensors_timestamp *ts, uint32_t period)
 {
 	uint32_t period_min, period_max;
 
 	/* check that period is acceptable */
-	period_min = ts->min_period * mult;
-	period_max = ts->max_period * mult;
+	period_min = ts->min_period * ts->mult;
+	period_max = ts->max_period * ts->mult;
 	if (period > period_min && period < period_max)
 		return true;
 	else
@@ -84,15 +84,15 @@ static bool inv_validate_period(struct inv_sensors_timestamp *ts, uint32_t perio
 }
 
 static bool inv_update_chip_period(struct inv_sensors_timestamp *ts,
-				    uint32_t mult, uint32_t period)
+				   uint32_t period)
 {
 	uint32_t new_chip_period;
 
-	if (!inv_validate_period(ts, period, mult))
+	if (!inv_validate_period(ts, period))
 		return false;
 
 	/* update chip internal period estimation */
-	new_chip_period = period / mult;
+	new_chip_period = period / ts->mult;
 	inv_update_acc(&ts->chip_period, new_chip_period);
 	ts->period = ts->mult * ts->chip_period.val;
 
@@ -101,6 +101,9 @@ static bool inv_update_chip_period(struct inv_sensors_timestamp *ts,
 
 static void inv_align_timestamp_it(struct inv_sensors_timestamp *ts)
 {
+	const int64_t period_min = ts->min_period * ts->mult;
+	const int64_t period_max = ts->max_period * ts->mult;
+	int64_t add_max, sub_max;
 	int64_t delta, jitter;
 	int64_t adjust;
 
@@ -108,11 +111,13 @@ static void inv_align_timestamp_it(struct inv_sensors_timestamp *ts)
 	delta = ts->it.lo - ts->timestamp;
 
 	/* adjust timestamp while respecting jitter */
+	add_max = period_max - (int64_t)ts->period;
+	sub_max = period_min - (int64_t)ts->period;
 	jitter = INV_SENSORS_TIMESTAMP_JITTER((int64_t)ts->period, ts->chip.jitter);
 	if (delta > jitter)
-		adjust = jitter;
+		adjust = add_max;
 	else if (delta < -jitter)
-		adjust = -jitter;
+		adjust = sub_max;
 	else
 		adjust = 0;
 
@@ -120,16 +125,14 @@ static void inv_align_timestamp_it(struct inv_sensors_timestamp *ts)
 }
 
 void inv_sensors_timestamp_interrupt(struct inv_sensors_timestamp *ts,
-				      uint32_t fifo_period, size_t fifo_nb,
-				      size_t sensor_nb, int64_t timestamp)
+				     size_t sample_nb, int64_t timestamp)
 {
 	struct inv_sensors_timestamp_interval *it;
 	int64_t delta, interval;
-	const uint32_t fifo_mult = fifo_period / ts->chip.clock_period;
 	uint32_t period;
 	bool valid = false;
 
-	if (fifo_nb == 0)
+	if (sample_nb == 0)
 		return;
 
 	/* update interrupt timestamp and compute chip and sensor periods */
@@ -139,14 +142,14 @@ void inv_sensors_timestamp_interrupt(struct inv_sensors_timestamp *ts,
 	delta = it->up - it->lo;
 	if (it->lo != 0) {
 		/* compute period: delta time divided by number of samples */
-		period = div_s64(delta, fifo_nb);
-		valid = inv_update_chip_period(ts, fifo_mult, period);
+		period = div_s64(delta, sample_nb);
+		valid = inv_update_chip_period(ts, period);
 	}
 
 	/* no previous data, compute theoritical value from interrupt */
 	if (ts->timestamp == 0) {
 		/* elapsed time: sensor period * sensor samples number */
-		interval = (int64_t)ts->period * (int64_t)sensor_nb;
+		interval = (int64_t)ts->period * (int64_t)sample_nb;
 		ts->timestamp = it->up - interval;
 		return;
 	}
diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig
index 34eb40bb9529..3c2bf620f00f 100644
--- a/drivers/iio/dac/Kconfig
+++ b/drivers/iio/dac/Kconfig
@@ -131,6 +131,43 @@ config AD5624R_SPI
 	  Say yes here to build support for Analog Devices AD5624R, AD5644R and
 	  AD5664R converters (DAC). This driver uses the common SPI interface.
 
+config AD9739A
+	tristate "Analog Devices AD9739A RF DAC spi driver"
+	depends on SPI || COMPILE_TEST
+	select REGMAP_SPI
+	select IIO_BACKEND
+	help
+	  Say yes here to build support for Analog Devices AD9739A Digital-to
+	  Analog Converter.
+
+	  The driver requires the assistance of the AXI DAC IP core to operate,
+	  since SPI is used for configuration only, while data has to be
+	  streamed into memory via DMA.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called ad9739a.
+
+config ADI_AXI_DAC
+	tristate "Analog Devices Generic AXI DAC IP core driver"
+	select IIO_BUFFER
+	select IIO_BUFFER_DMAENGINE
+	select REGMAP_MMIO
+	select IIO_BACKEND
+	help
+	  Say yes here to build support for Analog Devices Generic
+	  AXI DAC IP core. The IP core is used for interfacing with
+	  digital-to-analog (DAC) converters that require either a high-speed
+	  serial interface (JESD204B/C) or a source synchronous parallel
+	  interface (LVDS/CMOS).
+	  Typically (for such devices) SPI will be used for configuration only,
+	  while this IP core handles the streaming of data into memory via DMA.
+
+	  Link: https://wiki.analog.com/resources/fpga/docs/axi_dac_ip
+	  If unsure, say N (but it's safe to say "Y").
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called adi-axi-dac.
+
 config LTC2688
 	tristate "Analog Devices LTC2688 DAC spi driver"
 	depends on SPI
diff --git a/drivers/iio/dac/Makefile b/drivers/iio/dac/Makefile
index 55bf89739d14..8432a81a19dc 100644
--- a/drivers/iio/dac/Makefile
+++ b/drivers/iio/dac/Makefile
@@ -29,6 +29,8 @@ obj-$(CONFIG_AD5696_I2C) += ad5696-i2c.o
 obj-$(CONFIG_AD7293) += ad7293.o
 obj-$(CONFIG_AD7303) += ad7303.o
 obj-$(CONFIG_AD8801) += ad8801.o
+obj-$(CONFIG_AD9739A) += ad9739a.o
+obj-$(CONFIG_ADI_AXI_DAC) += adi-axi-dac.o
 obj-$(CONFIG_CIO_DAC) += cio-dac.o
 obj-$(CONFIG_DPOT_DAC) += dpot-dac.o
 obj-$(CONFIG_DS4424) += ds4424.o
diff --git a/drivers/iio/dac/ad3552r.c b/drivers/iio/dac/ad3552r.c
index a492e8f2fc0f..8aa942896b5b 100644
--- a/drivers/iio/dac/ad3552r.c
+++ b/drivers/iio/dac/ad3552r.c
@@ -801,51 +801,45 @@ static int ad3552r_configure_custom_gain(struct ad3552r_desc *dac,
 					 u32 ch)
 {
 	struct device *dev = &dac->spi->dev;
-	struct fwnode_handle *gain_child;
 	u32 val;
 	int err;
 	u8 addr;
 	u16 reg = 0, offset;
 
-	gain_child = fwnode_get_named_child_node(child,
-						 "custom-output-range-config");
-	if (!gain_child) {
-		dev_err(dev,
-			"mandatory custom-output-range-config property missing\n");
-		return -EINVAL;
-	}
+	struct fwnode_handle *gain_child __free(fwnode_handle)
+		= fwnode_get_named_child_node(child,
+					      "custom-output-range-config");
+	if (!gain_child)
+		return dev_err_probe(dev, -EINVAL,
+				     "mandatory custom-output-range-config property missing\n");
 
 	dac->ch_data[ch].range_override = 1;
 	reg |= ad3552r_field_prep(1, AD3552R_MASK_CH_RANGE_OVERRIDE);
 
 	err = fwnode_property_read_u32(gain_child, "adi,gain-scaling-p", &val);
-	if (err) {
-		dev_err(dev, "mandatory adi,gain-scaling-p property missing\n");
-		goto put_child;
-	}
+	if (err)
+		return dev_err_probe(dev, err,
+				     "mandatory adi,gain-scaling-p property missing\n");
 	reg |= ad3552r_field_prep(val, AD3552R_MASK_CH_GAIN_SCALING_P);
 	dac->ch_data[ch].p = val;
 
 	err = fwnode_property_read_u32(gain_child, "adi,gain-scaling-n", &val);
-	if (err) {
-		dev_err(dev, "mandatory adi,gain-scaling-n property missing\n");
-		goto put_child;
-	}
+	if (err)
+		return dev_err_probe(dev, err,
+				     "mandatory adi,gain-scaling-n property missing\n");
 	reg |= ad3552r_field_prep(val, AD3552R_MASK_CH_GAIN_SCALING_N);
 	dac->ch_data[ch].n = val;
 
 	err = fwnode_property_read_u32(gain_child, "adi,rfb-ohms", &val);
-	if (err) {
-		dev_err(dev, "mandatory adi,rfb-ohms property missing\n");
-		goto put_child;
-	}
+	if (err)
+		return dev_err_probe(dev, err,
+				     "mandatory adi,rfb-ohms property missing\n");
 	dac->ch_data[ch].rfb = val;
 
 	err = fwnode_property_read_u32(gain_child, "adi,gain-offset", &val);
-	if (err) {
-		dev_err(dev, "mandatory adi,gain-offset property missing\n");
-		goto put_child;
-	}
+	if (err)
+		return dev_err_probe(dev, err,
+				     "mandatory adi,gain-offset property missing\n");
 	dac->ch_data[ch].gain_offset = val;
 
 	offset = abs((s32)val);
@@ -855,21 +849,14 @@ static int ad3552r_configure_custom_gain(struct ad3552r_desc *dac,
 	addr = AD3552R_REG_ADDR_CH_GAIN(ch);
 	err = ad3552r_write_reg(dac, addr,
 				offset & AD3552R_MASK_CH_OFFSET_BITS_0_7);
-	if (err) {
-		dev_err(dev, "Error writing register\n");
-		goto put_child;
-	}
+	if (err)
+		return dev_err_probe(dev, err, "Error writing register\n");
 
 	err = ad3552r_write_reg(dac, addr, reg);
-	if (err) {
-		dev_err(dev, "Error writing register\n");
-		goto put_child;
-	}
-
-put_child:
-	fwnode_handle_put(gain_child);
+	if (err)
+		return dev_err_probe(dev, err, "Error writing register\n");
 
-	return err;
+	return 0;
 }
 
 static void ad3552r_reg_disable(void *reg)
@@ -880,7 +867,6 @@ static void ad3552r_reg_disable(void *reg)
 static int ad3552r_configure_device(struct ad3552r_desc *dac)
 {
 	struct device *dev = &dac->spi->dev;
-	struct fwnode_handle *child;
 	struct regulator *vref;
 	int err, cnt = 0, voltage, delta = 100000;
 	u32 vals[2], val, ch;
@@ -949,53 +935,45 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac)
 		return -ENODEV;
 	}
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		err = fwnode_property_read_u32(child, "reg", &ch);
-		if (err) {
-			dev_err(dev, "mandatory reg property missing\n");
-			goto put_child;
-		}
-		if (ch >= AD3552R_NUM_CH) {
-			dev_err(dev, "reg must be less than %d\n",
-				AD3552R_NUM_CH);
-			err = -EINVAL;
-			goto put_child;
-		}
+		if (err)
+			return dev_err_probe(dev, err,
+					     "mandatory reg property missing\n");
+		if (ch >= AD3552R_NUM_CH)
+			return dev_err_probe(dev, -EINVAL,
+					     "reg must be less than %d\n",
+					     AD3552R_NUM_CH);
 
 		if (fwnode_property_present(child, "adi,output-range-microvolt")) {
 			err = fwnode_property_read_u32_array(child,
 							     "adi,output-range-microvolt",
 							     vals,
 							     2);
-			if (err) {
-				dev_err(dev,
+			if (err)
+				return dev_err_probe(dev, err,
 					"adi,output-range-microvolt property could not be parsed\n");
-				goto put_child;
-			}
 
 			err = ad3552r_find_range(dac->chip_id, vals);
-			if (err < 0) {
-				dev_err(dev,
-					"Invalid adi,output-range-microvolt value\n");
-				goto put_child;
-			}
+			if (err < 0)
+				return dev_err_probe(dev, err,
+						     "Invalid adi,output-range-microvolt value\n");
+
 			val = err;
 			err = ad3552r_set_ch_value(dac,
 						   AD3552R_CH_OUTPUT_RANGE_SEL,
 						   ch, val);
 			if (err)
-				goto put_child;
+				return err;
 
 			dac->ch_data[ch].range = val;
 		} else if (dac->chip_id == AD3542R_ID) {
-			dev_err(dev,
-				"adi,output-range-microvolt is required for ad3542r\n");
-			err = -EINVAL;
-			goto put_child;
+			return dev_err_probe(dev, -EINVAL,
+					     "adi,output-range-microvolt is required for ad3542r\n");
 		} else {
 			err = ad3552r_configure_custom_gain(dac, child, ch);
 			if (err)
-				goto put_child;
+				return err;
 		}
 
 		ad3552r_calc_gain_and_offset(dac, ch);
@@ -1003,7 +981,7 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac)
 
 		err = ad3552r_set_ch_value(dac, AD3552R_CH_SELECT, ch, 1);
 		if (err < 0)
-			goto put_child;
+			return err;
 
 		dac->channels[cnt] = AD3552R_CH_DAC(ch);
 		++cnt;
@@ -1021,10 +999,6 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac)
 	dac->num_ch = cnt;
 
 	return 0;
-put_child:
-	fwnode_handle_put(child);
-
-	return err;
 }
 
 static int ad3552r_init(struct ad3552r_desc *dac)
diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c
index 404865e35460..0b24cb19ac9d 100644
--- a/drivers/iio/dac/ad5755.c
+++ b/drivers/iio/dac/ad5755.c
@@ -809,7 +809,6 @@ static struct ad5755_platform_data *ad5755_parse_fw(struct device *dev)
 
 static int ad5755_probe(struct spi_device *spi)
 {
-	enum ad5755_type type = spi_get_device_id(spi)->driver_data;
 	const struct ad5755_platform_data *pdata;
 	struct iio_dev *indio_dev;
 	struct ad5755_state *st;
@@ -824,7 +823,7 @@ static int ad5755_probe(struct spi_device *spi)
 	st = iio_priv(indio_dev);
 	spi_set_drvdata(spi, indio_dev);
 
-	st->chip_info = &ad5755_chip_info_tbl[type];
+	st->chip_info = spi_get_device_match_data(spi);
 	st->spi = spi;
 	st->pwr_down = 0xf;
 
@@ -854,21 +853,21 @@ static int ad5755_probe(struct spi_device *spi)
 }
 
 static const struct spi_device_id ad5755_id[] = {
-	{ "ad5755", ID_AD5755 },
-	{ "ad5755-1", ID_AD5755 },
-	{ "ad5757", ID_AD5757 },
-	{ "ad5735", ID_AD5735 },
-	{ "ad5737", ID_AD5737 },
+	{ "ad5755", (kernel_ulong_t)&ad5755_chip_info_tbl[ID_AD5755] },
+	{ "ad5755-1", (kernel_ulong_t)&ad5755_chip_info_tbl[ID_AD5755] },
+	{ "ad5757", (kernel_ulong_t)&ad5755_chip_info_tbl[ID_AD5757] },
+	{ "ad5735", (kernel_ulong_t)&ad5755_chip_info_tbl[ID_AD5735] },
+	{ "ad5737", (kernel_ulong_t)&ad5755_chip_info_tbl[ID_AD5737] },
 	{}
 };
 MODULE_DEVICE_TABLE(spi, ad5755_id);
 
 static const struct of_device_id ad5755_of_match[] = {
-	{ .compatible = "adi,ad5755" },
-	{ .compatible = "adi,ad5755-1" },
-	{ .compatible = "adi,ad5757" },
-	{ .compatible = "adi,ad5735" },
-	{ .compatible = "adi,ad5737" },
+	{ .compatible = "adi,ad5755", &ad5755_chip_info_tbl[ID_AD5755] },
+	{ .compatible = "adi,ad5755-1", &ad5755_chip_info_tbl[ID_AD5755] },
+	{ .compatible = "adi,ad5757", &ad5755_chip_info_tbl[ID_AD5757] },
+	{ .compatible = "adi,ad5735", &ad5755_chip_info_tbl[ID_AD5735] },
+	{ .compatible = "adi,ad5737", &ad5755_chip_info_tbl[ID_AD5737] },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ad5755_of_match);
@@ -876,6 +875,7 @@ MODULE_DEVICE_TABLE(of, ad5755_of_match);
 static struct spi_driver ad5755_driver = {
 	.driver = {
 		.name = "ad5755",
+		.of_match_table = ad5755_of_match,
 	},
 	.probe = ad5755_probe,
 	.id_table = ad5755_id,
diff --git a/drivers/iio/dac/ad5770r.c b/drivers/iio/dac/ad5770r.c
index f66d67402e43..c360ebf5297a 100644
--- a/drivers/iio/dac/ad5770r.c
+++ b/drivers/iio/dac/ad5770r.c
@@ -515,39 +515,32 @@ static int ad5770r_channel_config(struct ad5770r_state *st)
 {
 	int ret, tmp[2], min, max;
 	unsigned int num;
-	struct fwnode_handle *child;
 
 	num = device_get_child_node_count(&st->spi->dev);
 	if (num != AD5770R_MAX_CHANNELS)
 		return -EINVAL;
 
-	device_for_each_child_node(&st->spi->dev, child) {
+	device_for_each_child_node_scoped(&st->spi->dev, child) {
 		ret = fwnode_property_read_u32(child, "reg", &num);
 		if (ret)
-			goto err_child_out;
-		if (num >= AD5770R_MAX_CHANNELS) {
-			ret = -EINVAL;
-			goto err_child_out;
-		}
+			return ret;
+		if (num >= AD5770R_MAX_CHANNELS)
+			return -EINVAL;
 
 		ret = fwnode_property_read_u32_array(child,
 						     "adi,range-microamp",
 						     tmp, 2);
 		if (ret)
-			goto err_child_out;
+			return ret;
 
 		min = tmp[0] / 1000;
 		max = tmp[1] / 1000;
 		ret = ad5770r_store_output_range(st, min, max, num);
 		if (ret)
-			goto err_child_out;
+			return ret;
 	}
 
 	return 0;
-
-err_child_out:
-	fwnode_handle_put(child);
-	return ret;
 }
 
 static int ad5770r_init(struct ad5770r_state *st)
diff --git a/drivers/iio/dac/ad9739a.c b/drivers/iio/dac/ad9739a.c
new file mode 100644
index 000000000000..f56eabe53723
--- /dev/null
+++ b/drivers/iio/dac/ad9739a.c
@@ -0,0 +1,464 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Analog Devices AD9739a SPI DAC driver
+ *
+ * Copyright 2015-2024 Analog Devices Inc.
+ */
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/gpio/consumer.h>
+#include <linux/minmax.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+#include <linux/units.h>
+
+#include <linux/iio/backend.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/types.h>
+
+#define AD9739A_REG_MODE		0
+#define   AD9739A_RESET_MASK		BIT(5)
+#define AD9739A_REG_FSC_1		0x06
+#define AD9739A_REG_FSC_2		0x07
+#define   AD9739A_FSC_MSB		GENMASK(1, 0)
+#define AD9739A_REG_DEC_CNT		0x8
+#define   AD9739A_NORMAL_MODE		0
+#define   AD9739A_MIXED_MODE		2
+#define   AD9739A_DAC_DEC		GENMASK(1, 0)
+#define AD9739A_REG_LVDS_REC_CNT1	0x10
+#define   AD9739A_RCVR_LOOP_EN_MASK	GENMASK(1, 0)
+#define AD9739A_REG_LVDS_REC_CNT4	0x13
+#define   AD9739A_FINE_DEL_SKW_MASK	GENMASK(3, 0)
+#define AD9739A_REG_LVDS_REC_STAT9	0x21
+#define   AD9739A_RCVR_TRACK_AND_LOCK	(BIT(3) | BIT(0))
+#define AD9739A_REG_CROSS_CNT1		0x22
+#define AD9739A_REG_CROSS_CNT2		0x23
+#define AD9739A_REG_PHS_DET		0x24
+#define AD9739A_REG_MU_DUTY		0x25
+#define AD9739A_REG_MU_CNT1		0x26
+#define   AD9739A_MU_EN_MASK		BIT(0)
+#define   AD9739A_MU_GAIN_MASK		BIT(1)
+#define AD9739A_REG_MU_CNT2		0x27
+#define AD9739A_REG_MU_CNT3		0x28
+#define AD9739A_REG_MU_CNT4		0x29
+#define   AD9739A_MU_CNT4_DEFAULT	0xcb
+#define AD9739A_REG_MU_STAT1		0x2A
+#define   AD9739A_MU_LOCK_MASK		BIT(0)
+#define AD9739A_REG_ANA_CNT_1		0x32
+#define AD9739A_REG_ID			0x35
+
+#define AD9739A_ID			0x24
+#define AD9739A_REG_IS_RESERVED(reg)	\
+	((reg) == 0x5 || (reg) == 0x9 || (reg) == 0x0E || (reg) == 0x0D || \
+	 (reg) == 0x2B || (reg) == 0x2C || (reg) == 0x34)
+
+#define AD9739A_FSC_MIN		8580
+#define AD9739A_FSC_MAX		31700
+#define AD9739A_FSC_RANGE	(AD9739A_FSC_MAX - AD9739A_FSC_MIN + 1)
+
+#define AD9739A_MIN_DAC_CLK	(1600 * MEGA)
+#define AD9739A_MAX_DAC_CLK	(2500 * MEGA)
+#define AD9739A_DAC_CLK_RANGE	(AD9739A_MAX_DAC_CLK - AD9739A_MIN_DAC_CLK + 1)
+/* as recommended by the datasheet */
+#define AD9739A_LOCK_N_TRIES	3
+
+struct ad9739a_state {
+	struct iio_backend *back;
+	struct regmap *regmap;
+	unsigned long sample_rate;
+};
+
+static int ad9739a_oper_mode_get(struct iio_dev *indio_dev,
+				 const struct iio_chan_spec *chan)
+{
+	struct ad9739a_state *st = iio_priv(indio_dev);
+	u32 mode;
+	int ret;
+
+	ret = regmap_read(st->regmap, AD9739A_REG_DEC_CNT, &mode);
+	if (ret)
+		return ret;
+
+	mode = FIELD_GET(AD9739A_DAC_DEC, mode);
+	/* sanity check we get valid values from the HW */
+	if (mode != AD9739A_NORMAL_MODE && mode != AD9739A_MIXED_MODE)
+		return -EIO;
+	if (!mode)
+		return AD9739A_NORMAL_MODE;
+
+	/*
+	 * We get 2 from the device but for IIO modes, that means 1. Hence the
+	 * minus 1.
+	 */
+	return AD9739A_MIXED_MODE - 1;
+}
+
+static int ad9739a_oper_mode_set(struct iio_dev *indio_dev,
+				 const struct iio_chan_spec *chan, u32 mode)
+{
+	struct ad9739a_state *st = iio_priv(indio_dev);
+
+	/*
+	 * On the IIO interface we have 0 and 1 for mode. But for mixed_mode, we
+	 * need to write 2 in the device. That's what the below check is about.
+	 */
+	if (mode == AD9739A_MIXED_MODE - 1)
+		mode = AD9739A_MIXED_MODE;
+
+	return regmap_update_bits(st->regmap, AD9739A_REG_DEC_CNT,
+				  AD9739A_DAC_DEC, mode);
+}
+
+static int ad9739a_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val, int *val2, long mask)
+{
+	struct ad9739a_state *st = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = st->sample_rate;
+		*val2 = 0;
+		return IIO_VAL_INT_64;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad9739a_buffer_preenable(struct iio_dev *indio_dev)
+{
+	struct ad9739a_state *st = iio_priv(indio_dev);
+
+	return iio_backend_data_source_set(st->back, 0, IIO_BACKEND_EXTERNAL);
+}
+
+static int ad9739a_buffer_postdisable(struct iio_dev *indio_dev)
+{
+	struct ad9739a_state *st = iio_priv(indio_dev);
+
+	return iio_backend_data_source_set(st->back, 0,
+					   IIO_BACKEND_INTERNAL_CONTINUOS_WAVE);
+}
+
+static bool ad9739a_reg_accessible(struct device *dev, unsigned int reg)
+{
+	if (AD9739A_REG_IS_RESERVED(reg))
+		return false;
+	if (reg > AD9739A_REG_MU_STAT1 && reg < AD9739A_REG_ANA_CNT_1)
+		return false;
+
+	return true;
+}
+
+static int ad9739a_reset(struct device *dev, const struct ad9739a_state *st)
+{
+	struct gpio_desc *gpio;
+	int ret;
+
+	gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpio))
+		return PTR_ERR(gpio);
+	if (gpio) {
+		/* minimum pulse width of 40ns */
+		ndelay(40);
+		gpiod_set_value_cansleep(gpio, 0);
+		return 0;
+	}
+
+	/* bring all registers to their default state */
+	ret = regmap_set_bits(st->regmap, AD9739A_REG_MODE, AD9739A_RESET_MASK);
+	if (ret)
+		return ret;
+
+	ndelay(40);
+
+	return regmap_clear_bits(st->regmap, AD9739A_REG_MODE,
+				 AD9739A_RESET_MASK);
+}
+
+/*
+ * Recommended values (as per datasheet) for the dac clk common mode voltage
+ * and Mu controller. Look at table 29.
+ */
+static const struct reg_sequence ad9739a_clk_mu_ctrl[] = {
+	/* DAC clk common mode voltage */
+	{ AD9739A_REG_CROSS_CNT1, 0x0f },
+	{ AD9739A_REG_CROSS_CNT2, 0x0f },
+	/* Mu controller configuration */
+	{ AD9739A_REG_PHS_DET, 0x30 },
+	{ AD9739A_REG_MU_DUTY, 0x80 },
+	{ AD9739A_REG_MU_CNT2, 0x44 },
+	{ AD9739A_REG_MU_CNT3, 0x6c },
+};
+
+static int ad9739a_init(struct device *dev, const struct ad9739a_state *st)
+{
+	unsigned int i = 0, lock, fsc;
+	u32 fsc_raw;
+	int ret;
+
+	ret = regmap_multi_reg_write(st->regmap, ad9739a_clk_mu_ctrl,
+				     ARRAY_SIZE(ad9739a_clk_mu_ctrl));
+	if (ret)
+		return ret;
+
+	/*
+	 * Try to get the Mu lock. Repeat the below steps AD9739A_LOCK_N_TRIES
+	 * (as specified by the datasheet) until we get the lock.
+	 */
+	do {
+		ret = regmap_write(st->regmap, AD9739A_REG_MU_CNT4,
+				   AD9739A_MU_CNT4_DEFAULT);
+		if (ret)
+			return ret;
+
+		/* Enable the Mu controller search and track mode. */
+		ret = regmap_write(st->regmap, AD9739A_REG_MU_CNT1,
+				   AD9739A_MU_EN_MASK | AD9739A_MU_GAIN_MASK);
+		if (ret)
+			return ret;
+
+		/* Ensure the DLL loop is locked */
+		ret = regmap_read_poll_timeout(st->regmap, AD9739A_REG_MU_STAT1,
+					       lock, lock & AD9739A_MU_LOCK_MASK,
+					       0, 1000);
+		if (ret && ret != -ETIMEDOUT)
+			return ret;
+	} while (ret && ++i < AD9739A_LOCK_N_TRIES);
+
+	if (i == AD9739A_LOCK_N_TRIES)
+		return dev_err_probe(dev, ret, "Mu lock timeout\n");
+
+	/* Receiver tracking and lock. Same deal as the Mu controller */
+	i = 0;
+	do {
+		ret = regmap_update_bits(st->regmap, AD9739A_REG_LVDS_REC_CNT4,
+					 AD9739A_FINE_DEL_SKW_MASK,
+					 FIELD_PREP(AD9739A_FINE_DEL_SKW_MASK, 2));
+		if (ret)
+			return ret;
+
+		/* Disable the receiver and the loop. */
+		ret = regmap_write(st->regmap, AD9739A_REG_LVDS_REC_CNT1, 0);
+		if (ret)
+			return ret;
+
+		/*
+		 * Re-enable the loop so it falls out of lock and begins the
+		 * search/track routine again.
+		 */
+		ret = regmap_set_bits(st->regmap, AD9739A_REG_LVDS_REC_CNT1,
+				      AD9739A_RCVR_LOOP_EN_MASK);
+		if (ret)
+			return ret;
+
+		/* Ensure the DLL loop is locked */
+		ret = regmap_read_poll_timeout(st->regmap,
+					       AD9739A_REG_LVDS_REC_STAT9, lock,
+					       lock == AD9739A_RCVR_TRACK_AND_LOCK,
+					       0, 1000);
+		if (ret && ret != -ETIMEDOUT)
+			return ret;
+	} while (ret && ++i < AD9739A_LOCK_N_TRIES);
+
+	if (i == AD9739A_LOCK_N_TRIES)
+		return dev_err_probe(dev, ret, "Receiver lock timeout\n");
+
+	ret = device_property_read_u32(dev, "adi,full-scale-microamp", &fsc);
+	if (ret && ret == -EINVAL)
+		return 0;
+	if (ret)
+		return ret;
+	if (!in_range(fsc, AD9739A_FSC_MIN, AD9739A_FSC_RANGE))
+		return dev_err_probe(dev, -EINVAL,
+				     "Invalid full scale current(%u) [%u %u]\n",
+				     fsc, AD9739A_FSC_MIN, AD9739A_FSC_MAX);
+	/*
+	 * IOUTFS is given by
+	 *	Ioutfs = 0.0226 * FSC + 8.58
+	 * and is given in mA. Hence we'll have to multiply by 10 * MILLI in
+	 * order to get rid of the fractional.
+	 */
+	fsc_raw = DIV_ROUND_CLOSEST(fsc * 10 - 85800, 226);
+
+	ret = regmap_write(st->regmap, AD9739A_REG_FSC_1, fsc_raw & 0xff);
+	if (ret)
+		return ret;
+
+	return regmap_update_bits(st->regmap, AD9739A_REG_FSC_2,
+				  AD9739A_FSC_MSB, fsc_raw >> 8);
+}
+
+static const char * const ad9739a_modes_avail[] = { "normal", "mixed-mode" };
+
+static const struct iio_enum ad9739a_modes = {
+	.items = ad9739a_modes_avail,
+	.num_items = ARRAY_SIZE(ad9739a_modes_avail),
+	.get = ad9739a_oper_mode_get,
+	.set = ad9739a_oper_mode_set,
+};
+
+static const struct iio_chan_spec_ext_info ad9739a_ext_info[] = {
+	IIO_ENUM_AVAILABLE("operating_mode", IIO_SEPARATE, &ad9739a_modes),
+	IIO_ENUM("operating_mode", IIO_SEPARATE, &ad9739a_modes),
+	{ }
+};
+
+/*
+ * The reason for having two different channels is because we have, in reality,
+ * two sources of data:
+ *   ALTVOLTAGE: It's a Continuous Wave that's internally generated by the
+ *               backend device.
+ *   VOLTAGE: It's the typical data we can have in a DAC device and the source
+ *            of it has nothing to do with the backend. The backend will only
+ *            forward it into our data interface to be sent out.
+ */
+static struct iio_chan_spec ad9739a_channels[] = {
+	{
+		.type = IIO_ALTVOLTAGE,
+		.indexed = 1,
+		.output = 1,
+		.scan_index = -1,
+	},
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.output = 1,
+		.ext_info = ad9739a_ext_info,
+		.scan_type = {
+			.sign = 's',
+			.storagebits = 16,
+			.realbits = 16,
+		},
+	}
+};
+
+static const struct iio_info ad9739a_info = {
+	.read_raw = ad9739a_read_raw,
+};
+
+static const struct iio_buffer_setup_ops ad9739a_buffer_setup_ops = {
+	.preenable = &ad9739a_buffer_preenable,
+	.postdisable = &ad9739a_buffer_postdisable,
+};
+
+static const struct regmap_config ad9739a_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.readable_reg = ad9739a_reg_accessible,
+	.writeable_reg = ad9739a_reg_accessible,
+	.max_register = AD9739A_REG_ID,
+};
+
+static int ad9739a_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct iio_dev *indio_dev;
+	struct ad9739a_state *st;
+	unsigned int id;
+	struct clk *clk;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+
+	clk = devm_clk_get_enabled(dev, NULL);
+	if (IS_ERR(clk))
+		return dev_err_probe(dev, PTR_ERR(clk), "Could not get clkin\n");
+
+	st->sample_rate = clk_get_rate(clk);
+	if (!in_range(st->sample_rate, AD9739A_MIN_DAC_CLK,
+		      AD9739A_DAC_CLK_RANGE))
+		return dev_err_probe(dev, -EINVAL,
+				     "Invalid dac clk range(%lu) [%lu %lu]\n",
+				     st->sample_rate, AD9739A_MIN_DAC_CLK,
+				     AD9739A_MAX_DAC_CLK);
+
+	st->regmap = devm_regmap_init_spi(spi, &ad9739a_regmap_config);
+	if (IS_ERR(st->regmap))
+		return PTR_ERR(st->regmap);
+
+	ret = regmap_read(st->regmap, AD9739A_REG_ID, &id);
+	if (ret)
+		return ret;
+
+	if (id != AD9739A_ID)
+		dev_warn(dev, "Unrecognized CHIP_ID 0x%X", id);
+
+	ret = ad9739a_reset(dev, st);
+	if (ret)
+		return ret;
+
+	ret = ad9739a_init(dev, st);
+	if (ret)
+		return ret;
+
+	st->back = devm_iio_backend_get(dev, NULL);
+	if (IS_ERR(st->back))
+		return PTR_ERR(st->back);
+
+	ret = devm_iio_backend_request_buffer(dev, st->back, indio_dev);
+	if (ret)
+		return ret;
+
+	ret = iio_backend_extend_chan_spec(indio_dev, st->back,
+					   &ad9739a_channels[0]);
+	if (ret)
+		return ret;
+
+	ret = iio_backend_set_sampling_freq(st->back, 0, st->sample_rate);
+	if (ret)
+		return ret;
+
+	ret = devm_iio_backend_enable(dev, st->back);
+	if (ret)
+		return ret;
+
+	indio_dev->name = "ad9739a";
+	indio_dev->info = &ad9739a_info;
+	indio_dev->channels = ad9739a_channels;
+	indio_dev->num_channels = ARRAY_SIZE(ad9739a_channels);
+	indio_dev->setup_ops = &ad9739a_buffer_setup_ops;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct of_device_id ad9739a_of_match[] = {
+	{ .compatible = "adi,ad9739a" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ad9739a_of_match);
+
+static const struct spi_device_id ad9739a_id[] = {
+	{"ad9739a"},
+	{}
+};
+MODULE_DEVICE_TABLE(spi, ad9739a_id);
+
+static struct spi_driver ad9739a_driver = {
+	.driver = {
+		.name = "ad9739a",
+		.of_match_table = ad9739a_of_match,
+	},
+	.probe = ad9739a_probe,
+	.id_table = ad9739a_id,
+};
+module_spi_driver(ad9739a_driver);
+
+MODULE_AUTHOR("Dragos Bogdan <dragos.bogdan@analog.com>");
+MODULE_AUTHOR("Nuno Sa <nuno.sa@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD9739 DAC");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_BACKEND);
diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c
new file mode 100644
index 000000000000..880d83a014a1
--- /dev/null
+++ b/drivers/iio/dac/adi-axi-dac.c
@@ -0,0 +1,635 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Analog Devices Generic AXI DAC IP core
+ * Link: https://wiki.analog.com/resources/fpga/docs/axi_dac_ip
+ *
+ * Copyright 2016-2024 Analog Devices Inc.
+ */
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/cleanup.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/limits.h>
+#include <linux/kstrtox.h>
+#include <linux/math.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/units.h>
+
+#include <linux/fpga/adi-axi-common.h>
+#include <linux/iio/backend.h>
+#include <linux/iio/buffer-dmaengine.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+
+/*
+ * Register definitions:
+ *   https://wiki.analog.com/resources/fpga/docs/axi_dac_ip#register_map
+ */
+
+/* Base controls */
+#define AXI_DAC_REG_CONFIG		0x0c
+#define	   AXI_DDS_DISABLE		BIT(6)
+
+ /* DAC controls */
+#define AXI_DAC_REG_RSTN		0x0040
+#define   AXI_DAC_RSTN_CE_N		BIT(2)
+#define   AXI_DAC_RSTN_MMCM_RSTN	BIT(1)
+#define   AXI_DAC_RSTN_RSTN		BIT(0)
+#define AXI_DAC_REG_CNTRL_1		0x0044
+#define   AXI_DAC_SYNC			BIT(0)
+#define AXI_DAC_REG_CNTRL_2		0x0048
+#define	  ADI_DAC_R1_MODE		BIT(4)
+#define AXI_DAC_DRP_STATUS		0x0074
+#define   AXI_DAC_DRP_LOCKED		BIT(17)
+/* DAC Channel controls */
+#define AXI_DAC_REG_CHAN_CNTRL_1(c)	(0x0400 + (c) * 0x40)
+#define AXI_DAC_REG_CHAN_CNTRL_3(c)	(0x0408 + (c) * 0x40)
+#define   AXI_DAC_SCALE_SIGN		BIT(15)
+#define   AXI_DAC_SCALE_INT		BIT(14)
+#define   AXI_DAC_SCALE			GENMASK(14, 0)
+#define AXI_DAC_REG_CHAN_CNTRL_2(c)	(0x0404 + (c) * 0x40)
+#define AXI_DAC_REG_CHAN_CNTRL_4(c)	(0x040c + (c) * 0x40)
+#define   AXI_DAC_PHASE			GENMASK(31, 16)
+#define   AXI_DAC_FREQUENCY		GENMASK(15, 0)
+#define AXI_DAC_REG_CHAN_CNTRL_7(c)	(0x0418 + (c) * 0x40)
+#define   AXI_DAC_DATA_SEL		GENMASK(3, 0)
+
+/* 360 degrees in rad */
+#define AXI_DAC_2_PI_MEGA		6283190
+enum {
+	AXI_DAC_DATA_INTERNAL_TONE,
+	AXI_DAC_DATA_DMA = 2,
+};
+
+struct axi_dac_state {
+	struct regmap *regmap;
+	struct device *dev;
+	/*
+	 * lock to protect multiple accesses to the device registers and global
+	 * data/variables.
+	 */
+	struct mutex lock;
+	u64 dac_clk;
+	u32 reg_config;
+	bool int_tone;
+};
+
+static int axi_dac_enable(struct iio_backend *back)
+{
+	struct axi_dac_state *st = iio_backend_get_priv(back);
+	unsigned int __val;
+	int ret;
+
+	guard(mutex)(&st->lock);
+	ret = regmap_set_bits(st->regmap, AXI_DAC_REG_RSTN,
+			      AXI_DAC_RSTN_MMCM_RSTN);
+	if (ret)
+		return ret;
+	/*
+	 * Make sure the DRP (Dynamic Reconfiguration Port) is locked. Not all
+	 * designs really use it but if they don't we still get the lock bit
+	 * set. So let's do it all the time so the code is generic.
+	 */
+	ret = regmap_read_poll_timeout(st->regmap, AXI_DAC_DRP_STATUS, __val,
+				       __val & AXI_DAC_DRP_LOCKED, 100, 1000);
+	if (ret)
+		return ret;
+
+	return regmap_set_bits(st->regmap, AXI_DAC_REG_RSTN,
+			       AXI_DAC_RSTN_RSTN | AXI_DAC_RSTN_MMCM_RSTN);
+}
+
+static void axi_dac_disable(struct iio_backend *back)
+{
+	struct axi_dac_state *st = iio_backend_get_priv(back);
+
+	guard(mutex)(&st->lock);
+	regmap_write(st->regmap, AXI_DAC_REG_RSTN, 0);
+}
+
+static struct iio_buffer *axi_dac_request_buffer(struct iio_backend *back,
+						 struct iio_dev *indio_dev)
+{
+	struct axi_dac_state *st = iio_backend_get_priv(back);
+	const char *dma_name;
+
+	if (device_property_read_string(st->dev, "dma-names", &dma_name))
+		dma_name = "tx";
+
+	return iio_dmaengine_buffer_setup_ext(st->dev, indio_dev, dma_name,
+					      IIO_BUFFER_DIRECTION_OUT);
+}
+
+static void axi_dac_free_buffer(struct iio_backend *back,
+				struct iio_buffer *buffer)
+{
+	iio_dmaengine_buffer_free(buffer);
+}
+
+enum {
+	AXI_DAC_FREQ_TONE_1,
+	AXI_DAC_FREQ_TONE_2,
+	AXI_DAC_SCALE_TONE_1,
+	AXI_DAC_SCALE_TONE_2,
+	AXI_DAC_PHASE_TONE_1,
+	AXI_DAC_PHASE_TONE_2,
+};
+
+static int __axi_dac_frequency_get(struct axi_dac_state *st, unsigned int chan,
+				   unsigned int tone_2, unsigned int *freq)
+{
+	u32 reg, raw;
+	int ret;
+
+	if (!st->dac_clk) {
+		dev_err(st->dev, "Sampling rate is 0...\n");
+		return -EINVAL;
+	}
+
+	if (tone_2)
+		reg = AXI_DAC_REG_CHAN_CNTRL_4(chan);
+	else
+		reg = AXI_DAC_REG_CHAN_CNTRL_2(chan);
+
+	ret = regmap_read(st->regmap, reg, &raw);
+	if (ret)
+		return ret;
+
+	raw = FIELD_GET(AXI_DAC_FREQUENCY, raw);
+	*freq = DIV_ROUND_CLOSEST_ULL(raw * st->dac_clk, BIT(16));
+
+	return 0;
+}
+
+static int axi_dac_frequency_get(struct axi_dac_state *st,
+				 const struct iio_chan_spec *chan, char *buf,
+				 unsigned int tone_2)
+{
+	unsigned int freq;
+	int ret;
+
+	scoped_guard(mutex, &st->lock) {
+		ret = __axi_dac_frequency_get(st, chan->channel, tone_2, &freq);
+		if (ret)
+			return ret;
+	}
+
+	return sysfs_emit(buf, "%u\n", freq);
+}
+
+static int axi_dac_scale_get(struct axi_dac_state *st,
+			     const struct iio_chan_spec *chan, char *buf,
+			     unsigned int tone_2)
+{
+	unsigned int scale, sign;
+	int ret, vals[2];
+	u32 reg, raw;
+
+	if (tone_2)
+		reg = AXI_DAC_REG_CHAN_CNTRL_3(chan->channel);
+	else
+		reg = AXI_DAC_REG_CHAN_CNTRL_1(chan->channel);
+
+	ret = regmap_read(st->regmap, reg, &raw);
+	if (ret)
+		return ret;
+
+	sign = FIELD_GET(AXI_DAC_SCALE_SIGN, raw);
+	raw = FIELD_GET(AXI_DAC_SCALE, raw);
+	scale = DIV_ROUND_CLOSEST_ULL((u64)raw * MEGA, AXI_DAC_SCALE_INT);
+
+	vals[0] = scale / MEGA;
+	vals[1] = scale % MEGA;
+
+	if (sign) {
+		vals[0] *= -1;
+		if (!vals[0])
+			vals[1] *= -1;
+	}
+
+	return iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(vals),
+				vals);
+}
+
+static int axi_dac_phase_get(struct axi_dac_state *st,
+			     const struct iio_chan_spec *chan, char *buf,
+			     unsigned int tone_2)
+{
+	u32 reg, raw, phase;
+	int ret, vals[2];
+
+	if (tone_2)
+		reg = AXI_DAC_REG_CHAN_CNTRL_4(chan->channel);
+	else
+		reg = AXI_DAC_REG_CHAN_CNTRL_2(chan->channel);
+
+	ret = regmap_read(st->regmap, reg, &raw);
+	if (ret)
+		return ret;
+
+	raw = FIELD_GET(AXI_DAC_PHASE, raw);
+	phase = DIV_ROUND_CLOSEST_ULL((u64)raw * AXI_DAC_2_PI_MEGA, U16_MAX);
+
+	vals[0] = phase / MEGA;
+	vals[1] = phase % MEGA;
+
+	return iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(vals),
+				vals);
+}
+
+static int __axi_dac_frequency_set(struct axi_dac_state *st, unsigned int chan,
+				   u64 sample_rate, unsigned int freq,
+				   unsigned int tone_2)
+{
+	u32 reg;
+	u16 raw;
+	int ret;
+
+	if (!sample_rate || freq > sample_rate / 2) {
+		dev_err(st->dev, "Invalid frequency(%u) dac_clk(%llu)\n",
+			freq, sample_rate);
+		return -EINVAL;
+	}
+
+	if (tone_2)
+		reg = AXI_DAC_REG_CHAN_CNTRL_4(chan);
+	else
+		reg = AXI_DAC_REG_CHAN_CNTRL_2(chan);
+
+	raw = DIV64_U64_ROUND_CLOSEST((u64)freq * BIT(16), sample_rate);
+
+	ret = regmap_update_bits(st->regmap,  reg, AXI_DAC_FREQUENCY, raw);
+	if (ret)
+		return ret;
+
+	/* synchronize channels */
+	return regmap_set_bits(st->regmap, AXI_DAC_REG_CNTRL_1, AXI_DAC_SYNC);
+}
+
+static int axi_dac_frequency_set(struct axi_dac_state *st,
+				 const struct iio_chan_spec *chan,
+				 const char *buf, size_t len, unsigned int tone_2)
+{
+	unsigned int freq;
+	int ret;
+
+	ret = kstrtou32(buf, 10, &freq);
+	if (ret)
+		return ret;
+
+	guard(mutex)(&st->lock);
+	ret = __axi_dac_frequency_set(st, chan->channel, st->dac_clk, freq,
+				      tone_2);
+	if (ret)
+		return ret;
+
+	return len;
+}
+
+static int axi_dac_scale_set(struct axi_dac_state *st,
+			     const struct iio_chan_spec *chan,
+			     const char *buf, size_t len, unsigned int tone_2)
+{
+	int integer, frac, scale;
+	u32 raw = 0, reg;
+	int ret;
+
+	ret = iio_str_to_fixpoint(buf, 100000, &integer, &frac);
+	if (ret)
+		return ret;
+
+	scale = integer * MEGA + frac;
+	if (scale <= -2 * (int)MEGA || scale >= 2 * (int)MEGA)
+		return -EINVAL;
+
+	/*  format is 1.1.14 (sign, integer and fractional bits) */
+	if (scale < 0) {
+		raw = FIELD_PREP(AXI_DAC_SCALE_SIGN, 1);
+		scale *= -1;
+	}
+
+	raw |= div_u64((u64)scale * AXI_DAC_SCALE_INT, MEGA);
+
+	if (tone_2)
+		reg = AXI_DAC_REG_CHAN_CNTRL_3(chan->channel);
+	else
+		reg = AXI_DAC_REG_CHAN_CNTRL_1(chan->channel);
+
+	guard(mutex)(&st->lock);
+	ret = regmap_write(st->regmap, reg, raw);
+	if (ret)
+		return ret;
+
+	/* synchronize channels */
+	ret = regmap_set_bits(st->regmap, AXI_DAC_REG_CNTRL_1, AXI_DAC_SYNC);
+	if (ret)
+		return ret;
+
+	return len;
+}
+
+static int axi_dac_phase_set(struct axi_dac_state *st,
+			     const struct iio_chan_spec *chan,
+			     const char *buf, size_t len, unsigned int tone_2)
+{
+	int integer, frac, phase;
+	u32 raw, reg;
+	int ret;
+
+	ret = iio_str_to_fixpoint(buf, 100000, &integer, &frac);
+	if (ret)
+		return ret;
+
+	phase = integer * MEGA + frac;
+	if (phase < 0 || phase > AXI_DAC_2_PI_MEGA)
+		return -EINVAL;
+
+	raw = DIV_ROUND_CLOSEST_ULL((u64)phase * U16_MAX, AXI_DAC_2_PI_MEGA);
+
+	if (tone_2)
+		reg = AXI_DAC_REG_CHAN_CNTRL_4(chan->channel);
+	else
+		reg = AXI_DAC_REG_CHAN_CNTRL_2(chan->channel);
+
+	guard(mutex)(&st->lock);
+	ret = regmap_update_bits(st->regmap, reg, AXI_DAC_PHASE,
+				 FIELD_PREP(AXI_DAC_PHASE, raw));
+	if (ret)
+		return ret;
+
+	/* synchronize channels */
+	ret = regmap_set_bits(st->regmap, AXI_DAC_REG_CNTRL_1, AXI_DAC_SYNC);
+	if (ret)
+		return ret;
+
+	return len;
+}
+
+static int axi_dac_ext_info_set(struct iio_backend *back, uintptr_t private,
+				const struct iio_chan_spec *chan,
+				const char *buf, size_t len)
+{
+	struct axi_dac_state *st = iio_backend_get_priv(back);
+
+	switch (private) {
+	case AXI_DAC_FREQ_TONE_1:
+	case AXI_DAC_FREQ_TONE_2:
+		return axi_dac_frequency_set(st, chan, buf, len,
+					     private == AXI_DAC_FREQ_TONE_2);
+	case AXI_DAC_SCALE_TONE_1:
+	case AXI_DAC_SCALE_TONE_2:
+		return axi_dac_scale_set(st, chan, buf, len,
+					 private == AXI_DAC_SCALE_TONE_2);
+	case AXI_DAC_PHASE_TONE_1:
+	case AXI_DAC_PHASE_TONE_2:
+		return axi_dac_phase_set(st, chan, buf, len,
+					 private == AXI_DAC_PHASE_TONE_2);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int axi_dac_ext_info_get(struct iio_backend *back, uintptr_t private,
+				const struct iio_chan_spec *chan, char *buf)
+{
+	struct axi_dac_state *st = iio_backend_get_priv(back);
+
+	switch (private) {
+	case AXI_DAC_FREQ_TONE_1:
+	case AXI_DAC_FREQ_TONE_2:
+		return axi_dac_frequency_get(st, chan, buf,
+					     private - AXI_DAC_FREQ_TONE_1);
+	case AXI_DAC_SCALE_TONE_1:
+	case AXI_DAC_SCALE_TONE_2:
+		return axi_dac_scale_get(st, chan, buf,
+					 private - AXI_DAC_SCALE_TONE_1);
+	case AXI_DAC_PHASE_TONE_1:
+	case AXI_DAC_PHASE_TONE_2:
+		return axi_dac_phase_get(st, chan, buf,
+					 private - AXI_DAC_PHASE_TONE_1);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static const struct iio_chan_spec_ext_info axi_dac_ext_info[] = {
+	IIO_BACKEND_EX_INFO("frequency0", IIO_SEPARATE, AXI_DAC_FREQ_TONE_1),
+	IIO_BACKEND_EX_INFO("frequency1", IIO_SEPARATE, AXI_DAC_FREQ_TONE_2),
+	IIO_BACKEND_EX_INFO("scale0", IIO_SEPARATE, AXI_DAC_SCALE_TONE_1),
+	IIO_BACKEND_EX_INFO("scale1", IIO_SEPARATE, AXI_DAC_SCALE_TONE_2),
+	IIO_BACKEND_EX_INFO("phase0", IIO_SEPARATE, AXI_DAC_PHASE_TONE_1),
+	IIO_BACKEND_EX_INFO("phase1", IIO_SEPARATE, AXI_DAC_PHASE_TONE_2),
+	{}
+};
+
+static int axi_dac_extend_chan(struct iio_backend *back,
+			       struct iio_chan_spec *chan)
+{
+	struct axi_dac_state *st = iio_backend_get_priv(back);
+
+	if (chan->type != IIO_ALTVOLTAGE)
+		return -EINVAL;
+	if (st->reg_config & AXI_DDS_DISABLE)
+		/* nothing to extend */
+		return 0;
+
+	chan->ext_info = axi_dac_ext_info;
+
+	return 0;
+}
+
+static int axi_dac_data_source_set(struct iio_backend *back, unsigned int chan,
+				   enum iio_backend_data_source data)
+{
+	struct axi_dac_state *st = iio_backend_get_priv(back);
+
+	switch (data) {
+	case IIO_BACKEND_INTERNAL_CONTINUOS_WAVE:
+		return regmap_update_bits(st->regmap,
+					  AXI_DAC_REG_CHAN_CNTRL_7(chan),
+					  AXI_DAC_DATA_SEL,
+					  AXI_DAC_DATA_INTERNAL_TONE);
+	case IIO_BACKEND_EXTERNAL:
+		return regmap_update_bits(st->regmap,
+					  AXI_DAC_REG_CHAN_CNTRL_7(chan),
+					  AXI_DAC_DATA_SEL, AXI_DAC_DATA_DMA);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int axi_dac_set_sample_rate(struct iio_backend *back, unsigned int chan,
+				   u64 sample_rate)
+{
+	struct axi_dac_state *st = iio_backend_get_priv(back);
+	unsigned int freq;
+	int ret, tone;
+
+	if (!sample_rate)
+		return -EINVAL;
+	if (st->reg_config & AXI_DDS_DISABLE)
+		/* sample_rate has no meaning if DDS is disabled */
+		return 0;
+
+	guard(mutex)(&st->lock);
+	/*
+	 * If dac_clk is 0 then this must be the first time we're being notified
+	 * about the interface sample rate. Hence, just update our internal
+	 * variable and bail... If it's not 0, then we get the current DDS
+	 * frequency (for the old rate) and update the registers for the new
+	 * sample rate.
+	 */
+	if (!st->dac_clk) {
+		st->dac_clk = sample_rate;
+		return 0;
+	}
+
+	for (tone = 0; tone <= AXI_DAC_FREQ_TONE_2; tone++) {
+		ret = __axi_dac_frequency_get(st, chan, tone, &freq);
+		if (ret)
+			return ret;
+
+		ret = __axi_dac_frequency_set(st, chan, sample_rate, tone, freq);
+		if (ret)
+			return ret;
+	}
+
+	st->dac_clk = sample_rate;
+
+	return 0;
+}
+
+static const struct iio_backend_ops axi_dac_generic = {
+	.enable = axi_dac_enable,
+	.disable = axi_dac_disable,
+	.request_buffer = axi_dac_request_buffer,
+	.free_buffer = axi_dac_free_buffer,
+	.extend_chan_spec = axi_dac_extend_chan,
+	.ext_info_set = axi_dac_ext_info_set,
+	.ext_info_get = axi_dac_ext_info_get,
+	.data_source_set = axi_dac_data_source_set,
+	.set_sample_rate = axi_dac_set_sample_rate,
+};
+
+static const struct regmap_config axi_dac_regmap_config = {
+	.val_bits = 32,
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.max_register = 0x0800,
+};
+
+static int axi_dac_probe(struct platform_device *pdev)
+{
+	const unsigned int *expected_ver;
+	struct axi_dac_state *st;
+	void __iomem *base;
+	unsigned int ver;
+	struct clk *clk;
+	int ret;
+
+	st = devm_kzalloc(&pdev->dev, sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return -ENOMEM;
+
+	expected_ver = device_get_match_data(&pdev->dev);
+	if (!expected_ver)
+		return -ENODEV;
+
+	clk = devm_clk_get_enabled(&pdev->dev, NULL);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	st->dev = &pdev->dev;
+	st->regmap = devm_regmap_init_mmio(&pdev->dev, base,
+					   &axi_dac_regmap_config);
+	if (IS_ERR(st->regmap))
+		return PTR_ERR(st->regmap);
+
+	/*
+	 * Force disable the core. Up to the frontend to enable us. And we can
+	 * still read/write registers...
+	 */
+	ret = regmap_write(st->regmap, AXI_DAC_REG_RSTN, 0);
+	if (ret)
+		return ret;
+
+	ret = regmap_read(st->regmap, ADI_AXI_REG_VERSION, &ver);
+	if (ret)
+		return ret;
+
+	if (ADI_AXI_PCORE_VER_MAJOR(ver) != ADI_AXI_PCORE_VER_MAJOR(*expected_ver)) {
+		dev_err(&pdev->dev,
+			"Major version mismatch. Expected %d.%.2d.%c, Reported %d.%.2d.%c\n",
+			ADI_AXI_PCORE_VER_MAJOR(*expected_ver),
+			ADI_AXI_PCORE_VER_MINOR(*expected_ver),
+			ADI_AXI_PCORE_VER_PATCH(*expected_ver),
+			ADI_AXI_PCORE_VER_MAJOR(ver),
+			ADI_AXI_PCORE_VER_MINOR(ver),
+			ADI_AXI_PCORE_VER_PATCH(ver));
+		return -ENODEV;
+	}
+
+	/* Let's get the core read only configuration */
+	ret = regmap_read(st->regmap, AXI_DAC_REG_CONFIG, &st->reg_config);
+	if (ret)
+		return ret;
+
+	/*
+	 * In some designs, setting the R1_MODE bit to 0 (which is the default
+	 * value) causes all channels of the frontend to be routed to the same
+	 * DMA (so they are sampled together). This is for things like
+	 * Multiple-Input and Multiple-Output (MIMO). As most of the times we
+	 * want independent channels let's override the core's default value and
+	 * set the R1_MODE bit.
+	 */
+	ret = regmap_set_bits(st->regmap, AXI_DAC_REG_CNTRL_2, ADI_DAC_R1_MODE);
+	if (ret)
+		return ret;
+
+	mutex_init(&st->lock);
+	ret = devm_iio_backend_register(&pdev->dev, &axi_dac_generic, st);
+	if (ret)
+		return ret;
+
+	dev_info(&pdev->dev, "AXI DAC IP core (%d.%.2d.%c) probed\n",
+		 ADI_AXI_PCORE_VER_MAJOR(ver),
+		 ADI_AXI_PCORE_VER_MINOR(ver),
+		 ADI_AXI_PCORE_VER_PATCH(ver));
+
+	return 0;
+}
+
+static unsigned int axi_dac_9_1_b_info = ADI_AXI_PCORE_VER(9, 1, 'b');
+
+static const struct of_device_id axi_dac_of_match[] = {
+	{ .compatible = "adi,axi-dac-9.1.b", .data = &axi_dac_9_1_b_info },
+	{}
+};
+MODULE_DEVICE_TABLE(of, axi_dac_of_match);
+
+static struct platform_driver axi_dac_driver = {
+	.driver = {
+		.name = "adi-axi-dac",
+		.of_match_table = axi_dac_of_match,
+	},
+	.probe = axi_dac_probe,
+};
+module_platform_driver(axi_dac_driver);
+
+MODULE_AUTHOR("Nuno Sa <nuno.sa@analog.com>");
+MODULE_DESCRIPTION("Analog Devices Generic AXI DAC IP core driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_DMAENGINE_BUFFER);
+MODULE_IMPORT_NS(IIO_BACKEND);
diff --git a/drivers/iio/dac/ltc2688.c b/drivers/iio/dac/ltc2688.c
index fc8eb53c65be..c4b1ba30f935 100644
--- a/drivers/iio/dac/ltc2688.c
+++ b/drivers/iio/dac/ltc2688.c
@@ -746,26 +746,21 @@ static int ltc2688_span_lookup(const struct ltc2688_state *st, int min, int max)
 static int ltc2688_channel_config(struct ltc2688_state *st)
 {
 	struct device *dev = &st->spi->dev;
-	struct fwnode_handle *child;
 	u32 reg, clk_input, val, tmp[2];
 	int ret, span;
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		struct ltc2688_chan *chan;
 
 		ret = fwnode_property_read_u32(child, "reg", &reg);
-		if (ret) {
-			fwnode_handle_put(child);
+		if (ret)
 			return dev_err_probe(dev, ret,
 					     "Failed to get reg property\n");
-		}
 
-		if (reg >= LTC2688_DAC_CHANNELS) {
-			fwnode_handle_put(child);
+		if (reg >= LTC2688_DAC_CHANNELS)
 			return dev_err_probe(dev, -EINVAL,
 					     "reg bigger than: %d\n",
 					     LTC2688_DAC_CHANNELS);
-		}
 
 		val = 0;
 		chan = &st->channels[reg];
@@ -786,12 +781,10 @@ static int ltc2688_channel_config(struct ltc2688_state *st)
 		if (!ret) {
 			span = ltc2688_span_lookup(st, (int)tmp[0] / 1000,
 						   tmp[1] / 1000);
-			if (span < 0) {
-				fwnode_handle_put(child);
-				return dev_err_probe(dev, -EINVAL,
+			if (span < 0)
+				return dev_err_probe(dev, span,
 						     "output range not valid:[%d %d]\n",
 						     tmp[0], tmp[1]);
-			}
 
 			val |= FIELD_PREP(LTC2688_CH_SPAN_MSK, span);
 		}
@@ -800,17 +793,14 @@ static int ltc2688_channel_config(struct ltc2688_state *st)
 					       &clk_input);
 		if (!ret) {
 			if (clk_input >= LTC2688_CH_TGP_MAX) {
-				fwnode_handle_put(child);
 				return dev_err_probe(dev, -EINVAL,
 						     "toggle-dither-input inv value(%d)\n",
 						     clk_input);
 			}
 
 			ret = ltc2688_tgp_clk_setup(st, chan, child, clk_input);
-			if (ret) {
-				fwnode_handle_put(child);
+			if (ret)
 				return ret;
-			}
 
 			/*
 			 * 0 means software toggle which is the default mode.
@@ -844,11 +834,9 @@ static int ltc2688_channel_config(struct ltc2688_state *st)
 
 		ret = regmap_write(st->regmap, LTC2688_CMD_CH_SETTING(reg),
 				   val);
-		if (ret) {
-			fwnode_handle_put(child);
-			return dev_err_probe(dev, -EINVAL,
+		if (ret)
+			return dev_err_probe(dev, ret,
 					     "failed to set chan settings\n");
-		}
 	}
 
 	return 0;
diff --git a/drivers/iio/dac/ti-dac5571.c b/drivers/iio/dac/ti-dac5571.c
index efb1269a77c1..c5162b72951a 100644
--- a/drivers/iio/dac/ti-dac5571.c
+++ b/drivers/iio/dac/ti-dac5571.c
@@ -13,6 +13,7 @@
  * https://www.ti.com/lit/ds/symlink/dac5573.pdf
  * https://www.ti.com/lit/ds/symlink/dac6573.pdf
  * https://www.ti.com/lit/ds/symlink/dac7573.pdf
+ * https://www.ti.com/lit/ds/symlink/dac081c081.pdf
  * https://www.ti.com/lit/ds/symlink/dac121c081.pdf
  */
 
@@ -386,6 +387,7 @@ static void dac5571_remove(struct i2c_client *i2c)
 }
 
 static const struct of_device_id dac5571_of_id[] = {
+	{.compatible = "ti,dac081c081", .data = &dac5571_spec[single_8bit] },
 	{.compatible = "ti,dac121c081", .data = &dac5571_spec[single_12bit] },
 	{.compatible = "ti,dac5571", .data = &dac5571_spec[single_8bit] },
 	{.compatible = "ti,dac6571", .data = &dac5571_spec[single_10bit] },
@@ -401,6 +403,7 @@ static const struct of_device_id dac5571_of_id[] = {
 MODULE_DEVICE_TABLE(of, dac5571_of_id);
 
 static const struct i2c_device_id dac5571_id[] = {
+	{"dac081c081", (kernel_ulong_t)&dac5571_spec[single_8bit] },
 	{"dac121c081", (kernel_ulong_t)&dac5571_spec[single_12bit] },
 	{"dac5571", (kernel_ulong_t)&dac5571_spec[single_8bit] },
 	{"dac6571", (kernel_ulong_t)&dac5571_spec[single_10bit] },
diff --git a/drivers/iio/frequency/admfm2000.c b/drivers/iio/frequency/admfm2000.c
index c34d79e55a7c..b2263b9afeda 100644
--- a/drivers/iio/frequency/admfm2000.c
+++ b/drivers/iio/frequency/admfm2000.c
@@ -160,26 +160,21 @@ static int admfm2000_channel_config(struct admfm2000_state *st,
 {
 	struct platform_device *pdev = to_platform_device(indio_dev->dev.parent);
 	struct device *dev = &pdev->dev;
-	struct fwnode_handle *child;
 	struct gpio_desc **dsa;
 	struct gpio_desc **sw;
 	int ret, i;
 	bool mode;
 	u32 reg;
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		ret = fwnode_property_read_u32(child, "reg", &reg);
-		if (ret) {
-			fwnode_handle_put(child);
+		if (ret)
 			return dev_err_probe(dev, ret,
 					     "Failed to get reg property\n");
-		}
 
-		if (reg >= indio_dev->num_channels) {
-			fwnode_handle_put(child);
+		if (reg >= indio_dev->num_channels)
 			return dev_err_probe(dev, -EINVAL, "reg bigger than: %d\n",
 					     indio_dev->num_channels);
-		}
 
 		if (fwnode_property_present(child, "adi,mixer-mode"))
 			mode = ADMFM2000_MIXER_MODE;
@@ -196,36 +191,29 @@ static int admfm2000_channel_config(struct admfm2000_state *st,
 			dsa = st->dsa2_gpios;
 			break;
 		default:
-			fwnode_handle_put(child);
 			return -EINVAL;
 		}
 
 		for (i = 0; i < ADMFM2000_MODE_GPIOS; i++) {
 			sw[i] = devm_fwnode_gpiod_get_index(dev, child, "switch",
 							    i, GPIOD_OUT_LOW, NULL);
-			if (IS_ERR(sw[i])) {
-				fwnode_handle_put(child);
+			if (IS_ERR(sw[i]))
 				return dev_err_probe(dev, PTR_ERR(sw[i]),
 						     "Failed to get gpios\n");
-			}
 		}
 
 		for (i = 0; i < ADMFM2000_DSA_GPIOS; i++) {
 			dsa[i] = devm_fwnode_gpiod_get_index(dev, child,
 							     "attenuation", i,
 							     GPIOD_OUT_LOW, NULL);
-			if (IS_ERR(dsa[i])) {
-				fwnode_handle_put(child);
+			if (IS_ERR(dsa[i]))
 				return dev_err_probe(dev, PTR_ERR(dsa[i]),
 						     "Failed to get gpios\n");
-			}
 		}
 
 		ret = admfm2000_mode(indio_dev, reg, mode);
-		if (ret) {
-			fwnode_handle_put(child);
+		if (ret)
 			return ret;
-		}
 	}
 
 	return 0;
diff --git a/drivers/iio/health/max30102.c b/drivers/iio/health/max30102.c
index 37e619827e8a..6616729af5b7 100644
--- a/drivers/iio/health/max30102.c
+++ b/drivers/iio/health/max30102.c
@@ -613,6 +613,7 @@ static void max30102_remove(struct i2c_client *client)
 }
 
 static const struct i2c_device_id max30102_id[] = {
+	{ "max30101", max30105 },
 	{ "max30102", max30102 },
 	{ "max30105", max30105 },
 	{}
@@ -620,6 +621,7 @@ static const struct i2c_device_id max30102_id[] = {
 MODULE_DEVICE_TABLE(i2c, max30102_id);
 
 static const struct of_device_id max30102_dt_ids[] = {
+	{ .compatible = "maxim,max30101" },
 	{ .compatible = "maxim,max30102" },
 	{ .compatible = "maxim,max30105" },
 	{ }
diff --git a/drivers/iio/humidity/hdc3020.c b/drivers/iio/humidity/hdc3020.c
index 1e5d0d4797b1..cdc4789213ba 100644
--- a/drivers/iio/humidity/hdc3020.c
+++ b/drivers/iio/humidity/hdc3020.c
@@ -15,11 +15,14 @@
 #include <linux/cleanup.h>
 #include <linux/crc8.h>
 #include <linux/delay.h>
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/pm.h>
+#include <linux/regulator/consumer.h>
 #include <linux/units.h>
 
 #include <asm/unaligned.h>
@@ -68,6 +71,8 @@
 
 struct hdc3020_data {
 	struct i2c_client *client;
+	struct gpio_desc *reset_gpio;
+	struct regulator *vdd_supply;
 	/*
 	 * Ensure that the sensor configuration (currently only heater is
 	 * supported) will not be changed during the process of reading
@@ -551,9 +556,53 @@ static const struct iio_info hdc3020_info = {
 	.write_event_value = hdc3020_write_thresh,
 };
 
-static void hdc3020_stop(void *data)
+static int hdc3020_power_off(struct hdc3020_data *data)
 {
-	hdc3020_exec_cmd((struct hdc3020_data *)data, HDC3020_EXIT_AUTO);
+	hdc3020_exec_cmd(data, HDC3020_EXIT_AUTO);
+
+	if (data->reset_gpio)
+		gpiod_set_value_cansleep(data->reset_gpio, 1);
+
+	return regulator_disable(data->vdd_supply);
+}
+
+static int hdc3020_power_on(struct hdc3020_data *data)
+{
+	int ret;
+
+	ret = regulator_enable(data->vdd_supply);
+	if (ret)
+		return ret;
+
+	fsleep(5000);
+
+	if (data->reset_gpio) {
+		gpiod_set_value_cansleep(data->reset_gpio, 0);
+		fsleep(3000);
+	}
+
+	if (data->client->irq) {
+		/*
+		 * The alert output is activated by default upon power up,
+		 * hardware reset, and soft reset. Clear the status register.
+		 */
+		ret = hdc3020_exec_cmd(data, HDC3020_S_STATUS);
+		if (ret) {
+			hdc3020_power_off(data);
+			return ret;
+		}
+	}
+
+	ret = hdc3020_exec_cmd(data, HDC3020_S_AUTO_10HZ_MOD0);
+	if (ret)
+		hdc3020_power_off(data);
+
+	return ret;
+}
+
+static void hdc3020_exit(void *data)
+{
+	hdc3020_power_off(data);
 }
 
 static int hdc3020_probe(struct i2c_client *client)
@@ -569,6 +618,8 @@ static int hdc3020_probe(struct i2c_client *client)
 	if (!indio_dev)
 		return -ENOMEM;
 
+	dev_set_drvdata(&client->dev, indio_dev);
+
 	data = iio_priv(indio_dev);
 	data->client = client;
 	mutex_init(&data->lock);
@@ -580,6 +631,26 @@ static int hdc3020_probe(struct i2c_client *client)
 	indio_dev->info = &hdc3020_info;
 	indio_dev->channels = hdc3020_channels;
 	indio_dev->num_channels = ARRAY_SIZE(hdc3020_channels);
+
+	data->vdd_supply = devm_regulator_get(&client->dev, "vdd");
+	if (IS_ERR(data->vdd_supply))
+		return dev_err_probe(&client->dev, PTR_ERR(data->vdd_supply),
+				     "Unable to get VDD regulator\n");
+
+	data->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
+						   GPIOD_OUT_HIGH);
+	if (IS_ERR(data->reset_gpio))
+		return dev_err_probe(&client->dev, PTR_ERR(data->reset_gpio),
+				     "Cannot get reset GPIO\n");
+
+	ret = hdc3020_power_on(data);
+	if (ret)
+		return dev_err_probe(&client->dev, ret, "Power on failed\n");
+
+	ret = devm_add_action_or_reset(&data->client->dev, hdc3020_exit, data);
+	if (ret)
+		return ret;
+
 	if (client->irq) {
 		ret = devm_request_threaded_irq(&client->dev, client->irq,
 						NULL, hdc3020_interrupt_handler,
@@ -588,25 +659,8 @@ static int hdc3020_probe(struct i2c_client *client)
 		if (ret)
 			return dev_err_probe(&client->dev, ret,
 					     "Failed to request IRQ\n");
-
-		/*
-		 * The alert output is activated by default upon power up,
-		 * hardware reset, and soft reset. Clear the status register.
-		 */
-		ret = hdc3020_exec_cmd(data, HDC3020_S_STATUS);
-		if (ret)
-			return ret;
 	}
 
-	ret = hdc3020_exec_cmd(data, HDC3020_S_AUTO_10HZ_MOD0);
-	if (ret)
-		return dev_err_probe(&client->dev, ret,
-				     "Unable to set up measurement\n");
-
-	ret = devm_add_action_or_reset(&data->client->dev, hdc3020_stop, data);
-	if (ret)
-		return ret;
-
 	ret = devm_iio_device_register(&data->client->dev, indio_dev);
 	if (ret)
 		return dev_err_probe(&client->dev, ret, "Failed to add device");
@@ -614,6 +668,24 @@ static int hdc3020_probe(struct i2c_client *client)
 	return 0;
 }
 
+static int hdc3020_suspend(struct device *dev)
+{
+	struct iio_dev *iio_dev = dev_get_drvdata(dev);
+	struct hdc3020_data *data = iio_priv(iio_dev);
+
+	return hdc3020_power_off(data);
+}
+
+static int hdc3020_resume(struct device *dev)
+{
+	struct iio_dev *iio_dev = dev_get_drvdata(dev);
+	struct hdc3020_data *data = iio_priv(iio_dev);
+
+	return hdc3020_power_on(data);
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(hdc3020_pm_ops, hdc3020_suspend, hdc3020_resume);
+
 static const struct i2c_device_id hdc3020_id[] = {
 	{ "hdc3020" },
 	{ "hdc3021" },
@@ -633,6 +705,7 @@ MODULE_DEVICE_TABLE(of, hdc3020_dt_ids);
 static struct i2c_driver hdc3020_driver = {
 	.driver = {
 		.name = "hdc3020",
+		.pm = pm_sleep_ptr(&hdc3020_pm_ops),
 		.of_match_table = hdc3020_dt_ids,
 	},
 	.probe = hdc3020_probe,
diff --git a/drivers/iio/humidity/hts221_core.c b/drivers/iio/humidity/hts221_core.c
index 2a413da87b76..87627d116eff 100644
--- a/drivers/iio/humidity/hts221_core.c
+++ b/drivers/iio/humidity/hts221_core.c
@@ -573,7 +573,7 @@ int hts221_probe(struct device *dev, int irq, const char *name,
 	if (!iio_dev)
 		return -ENOMEM;
 
-	dev_set_drvdata(dev, (void *)iio_dev);
+	dev_set_drvdata(dev, iio_dev);
 
 	hw = iio_priv(iio_dev);
 	hw->name = name;
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600.h b/drivers/iio/imu/inv_icm42600/inv_icm42600.h
index 0e290c807b0f..c4ac91f6bafe 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600.h
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600.h
@@ -13,6 +13,7 @@
 #include <linux/regulator/consumer.h>
 #include <linux/pm.h>
 #include <linux/iio/iio.h>
+#include <linux/iio/common/inv_sensors_timestamp.h>
 
 #include "inv_icm42600_buffer.h"
 
@@ -21,7 +22,9 @@ enum inv_icm42600_chip {
 	INV_CHIP_ICM42600,
 	INV_CHIP_ICM42602,
 	INV_CHIP_ICM42605,
+	INV_CHIP_ICM42686,
 	INV_CHIP_ICM42622,
+	INV_CHIP_ICM42688,
 	INV_CHIP_ICM42631,
 	INV_CHIP_NB,
 };
@@ -56,6 +59,17 @@ enum inv_icm42600_gyro_fs {
 	INV_ICM42600_GYRO_FS_15_625DPS,
 	INV_ICM42600_GYRO_FS_NB,
 };
+enum inv_icm42686_gyro_fs {
+	INV_ICM42686_GYRO_FS_4000DPS,
+	INV_ICM42686_GYRO_FS_2000DPS,
+	INV_ICM42686_GYRO_FS_1000DPS,
+	INV_ICM42686_GYRO_FS_500DPS,
+	INV_ICM42686_GYRO_FS_250DPS,
+	INV_ICM42686_GYRO_FS_125DPS,
+	INV_ICM42686_GYRO_FS_62_5DPS,
+	INV_ICM42686_GYRO_FS_31_25DPS,
+	INV_ICM42686_GYRO_FS_NB,
+};
 
 /* accelerometer fullscale values */
 enum inv_icm42600_accel_fs {
@@ -65,6 +79,14 @@ enum inv_icm42600_accel_fs {
 	INV_ICM42600_ACCEL_FS_2G,
 	INV_ICM42600_ACCEL_FS_NB,
 };
+enum inv_icm42686_accel_fs {
+	INV_ICM42686_ACCEL_FS_32G,
+	INV_ICM42686_ACCEL_FS_16G,
+	INV_ICM42686_ACCEL_FS_8G,
+	INV_ICM42686_ACCEL_FS_4G,
+	INV_ICM42686_ACCEL_FS_2G,
+	INV_ICM42686_ACCEL_FS_NB,
+};
 
 /* ODR suffixed by LN or LP are Low-Noise or Low-Power mode only */
 enum inv_icm42600_odr {
@@ -150,6 +172,19 @@ struct inv_icm42600_state {
 	} timestamp;
 };
 
+
+/**
+ * struct inv_icm42600_sensor_state - sensor state variables
+ * @scales:		table of scales.
+ * @scales_len:		length (nb of items) of the scales table.
+ * @ts:			timestamp module states.
+ */
+struct inv_icm42600_sensor_state {
+	const int *scales;
+	size_t scales_len;
+	struct inv_sensors_timestamp ts;
+};
+
 /* Virtual register addresses: @bank on MSB (4 upper bits), @address on LSB */
 
 /* Bank selection register, available in all banks */
@@ -303,7 +338,9 @@ struct inv_icm42600_state {
 #define INV_ICM42600_WHOAMI_ICM42600			0x40
 #define INV_ICM42600_WHOAMI_ICM42602			0x41
 #define INV_ICM42600_WHOAMI_ICM42605			0x42
+#define INV_ICM42600_WHOAMI_ICM42686			0x44
 #define INV_ICM42600_WHOAMI_ICM42622			0x46
+#define INV_ICM42600_WHOAMI_ICM42688			0x47
 #define INV_ICM42600_WHOAMI_ICM42631			0x5C
 
 /* User bank 1 (MSB 0x10) */
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c
index f67bd5a39beb..83d8504ebfff 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c
@@ -99,7 +99,8 @@ static int inv_icm42600_accel_update_scan_mode(struct iio_dev *indio_dev,
 					       const unsigned long *scan_mask)
 {
 	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
-	struct inv_sensors_timestamp *ts = iio_priv(indio_dev);
+	struct inv_icm42600_sensor_state *accel_st = iio_priv(indio_dev);
+	struct inv_sensors_timestamp *ts = &accel_st->ts;
 	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
 	unsigned int fifo_en = 0;
 	unsigned int sleep_temp = 0;
@@ -210,33 +211,54 @@ static const int inv_icm42600_accel_scale[] = {
 	[2 * INV_ICM42600_ACCEL_FS_2G] = 0,
 	[2 * INV_ICM42600_ACCEL_FS_2G + 1] = 598550,
 };
+static const int inv_icm42686_accel_scale[] = {
+	/* +/- 32G => 0.009576807 m/s-2 */
+	[2 * INV_ICM42686_ACCEL_FS_32G] = 0,
+	[2 * INV_ICM42686_ACCEL_FS_32G + 1] = 9576807,
+	/* +/- 16G => 0.004788403 m/s-2 */
+	[2 * INV_ICM42686_ACCEL_FS_16G] = 0,
+	[2 * INV_ICM42686_ACCEL_FS_16G + 1] = 4788403,
+	/* +/- 8G => 0.002394202 m/s-2 */
+	[2 * INV_ICM42686_ACCEL_FS_8G] = 0,
+	[2 * INV_ICM42686_ACCEL_FS_8G + 1] = 2394202,
+	/* +/- 4G => 0.001197101 m/s-2 */
+	[2 * INV_ICM42686_ACCEL_FS_4G] = 0,
+	[2 * INV_ICM42686_ACCEL_FS_4G + 1] = 1197101,
+	/* +/- 2G => 0.000598550 m/s-2 */
+	[2 * INV_ICM42686_ACCEL_FS_2G] = 0,
+	[2 * INV_ICM42686_ACCEL_FS_2G + 1] = 598550,
+};
 
-static int inv_icm42600_accel_read_scale(struct inv_icm42600_state *st,
+static int inv_icm42600_accel_read_scale(struct iio_dev *indio_dev,
 					 int *val, int *val2)
 {
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct inv_icm42600_sensor_state *accel_st = iio_priv(indio_dev);
 	unsigned int idx;
 
 	idx = st->conf.accel.fs;
 
-	*val = inv_icm42600_accel_scale[2 * idx];
-	*val2 = inv_icm42600_accel_scale[2 * idx + 1];
+	*val = accel_st->scales[2 * idx];
+	*val2 = accel_st->scales[2 * idx + 1];
 	return IIO_VAL_INT_PLUS_NANO;
 }
 
-static int inv_icm42600_accel_write_scale(struct inv_icm42600_state *st,
+static int inv_icm42600_accel_write_scale(struct iio_dev *indio_dev,
 					  int val, int val2)
 {
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct inv_icm42600_sensor_state *accel_st = iio_priv(indio_dev);
 	struct device *dev = regmap_get_device(st->map);
 	unsigned int idx;
 	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
 	int ret;
 
-	for (idx = 0; idx < ARRAY_SIZE(inv_icm42600_accel_scale); idx += 2) {
-		if (val == inv_icm42600_accel_scale[idx] &&
-		    val2 == inv_icm42600_accel_scale[idx + 1])
+	for (idx = 0; idx < accel_st->scales_len; idx += 2) {
+		if (val == accel_st->scales[idx] &&
+		    val2 == accel_st->scales[idx + 1])
 			break;
 	}
-	if (idx >= ARRAY_SIZE(inv_icm42600_accel_scale))
+	if (idx >= accel_st->scales_len)
 		return -EINVAL;
 
 	conf.fs = idx / 2;
@@ -309,7 +331,8 @@ static int inv_icm42600_accel_write_odr(struct iio_dev *indio_dev,
 					int val, int val2)
 {
 	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
-	struct inv_sensors_timestamp *ts = iio_priv(indio_dev);
+	struct inv_icm42600_sensor_state *accel_st = iio_priv(indio_dev);
+	struct inv_sensors_timestamp *ts = &accel_st->ts;
 	struct device *dev = regmap_get_device(st->map);
 	unsigned int idx;
 	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
@@ -565,7 +588,7 @@ static int inv_icm42600_accel_read_raw(struct iio_dev *indio_dev,
 		*val = data;
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
-		return inv_icm42600_accel_read_scale(st, val, val2);
+		return inv_icm42600_accel_read_scale(indio_dev, val, val2);
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		return inv_icm42600_accel_read_odr(st, val, val2);
 	case IIO_CHAN_INFO_CALIBBIAS:
@@ -580,14 +603,16 @@ static int inv_icm42600_accel_read_avail(struct iio_dev *indio_dev,
 					 const int **vals,
 					 int *type, int *length, long mask)
 {
+	struct inv_icm42600_sensor_state *accel_st = iio_priv(indio_dev);
+
 	if (chan->type != IIO_ACCEL)
 		return -EINVAL;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_SCALE:
-		*vals = inv_icm42600_accel_scale;
+		*vals = accel_st->scales;
 		*type = IIO_VAL_INT_PLUS_NANO;
-		*length = ARRAY_SIZE(inv_icm42600_accel_scale);
+		*length = accel_st->scales_len;
 		return IIO_AVAIL_LIST;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		*vals = inv_icm42600_accel_odr;
@@ -618,7 +643,7 @@ static int inv_icm42600_accel_write_raw(struct iio_dev *indio_dev,
 		ret = iio_device_claim_direct_mode(indio_dev);
 		if (ret)
 			return ret;
-		ret = inv_icm42600_accel_write_scale(st, val, val2);
+		ret = inv_icm42600_accel_write_scale(indio_dev, val, val2);
 		iio_device_release_direct_mode(indio_dev);
 		return ret;
 	case IIO_CHAN_INFO_SAMP_FREQ:
@@ -705,8 +730,8 @@ struct iio_dev *inv_icm42600_accel_init(struct inv_icm42600_state *st)
 {
 	struct device *dev = regmap_get_device(st->map);
 	const char *name;
+	struct inv_icm42600_sensor_state *accel_st;
 	struct inv_sensors_timestamp_chip ts_chip;
-	struct inv_sensors_timestamp *ts;
 	struct iio_dev *indio_dev;
 	int ret;
 
@@ -714,9 +739,21 @@ struct iio_dev *inv_icm42600_accel_init(struct inv_icm42600_state *st)
 	if (!name)
 		return ERR_PTR(-ENOMEM);
 
-	indio_dev = devm_iio_device_alloc(dev, sizeof(*ts));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*accel_st));
 	if (!indio_dev)
 		return ERR_PTR(-ENOMEM);
+	accel_st = iio_priv(indio_dev);
+
+	switch (st->chip) {
+	case INV_CHIP_ICM42686:
+		accel_st->scales = inv_icm42686_accel_scale;
+		accel_st->scales_len = ARRAY_SIZE(inv_icm42686_accel_scale);
+		break;
+	default:
+		accel_st->scales = inv_icm42600_accel_scale;
+		accel_st->scales_len = ARRAY_SIZE(inv_icm42600_accel_scale);
+		break;
+	}
 
 	/*
 	 * clock period is 32kHz (31250ns)
@@ -725,8 +762,7 @@ struct iio_dev *inv_icm42600_accel_init(struct inv_icm42600_state *st)
 	ts_chip.clock_period = 31250;
 	ts_chip.jitter = 20;
 	ts_chip.init_period = inv_icm42600_odr_to_period(st->conf.accel.odr);
-	ts = iio_priv(indio_dev);
-	inv_sensors_timestamp_init(ts, &ts_chip);
+	inv_sensors_timestamp_init(&accel_st->ts, &ts_chip);
 
 	iio_device_set_drvdata(indio_dev, st);
 	indio_dev->name = name;
@@ -751,7 +787,8 @@ struct iio_dev *inv_icm42600_accel_init(struct inv_icm42600_state *st)
 int inv_icm42600_accel_parse_fifo(struct iio_dev *indio_dev)
 {
 	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
-	struct inv_sensors_timestamp *ts = iio_priv(indio_dev);
+	struct inv_icm42600_sensor_state *accel_st = iio_priv(indio_dev);
+	struct inv_sensors_timestamp *ts = &accel_st->ts;
 	ssize_t i, size;
 	unsigned int no;
 	const void *accel, *gyro, *timestamp;
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.c
index b52f328fd26c..63b85ec88c13 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.c
@@ -276,7 +276,8 @@ static int inv_icm42600_buffer_preenable(struct iio_dev *indio_dev)
 {
 	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
 	struct device *dev = regmap_get_device(st->map);
-	struct inv_sensors_timestamp *ts = iio_priv(indio_dev);
+	struct inv_icm42600_sensor_state *sensor_st = iio_priv(indio_dev);
+	struct inv_sensors_timestamp *ts = &sensor_st->ts;
 
 	pm_runtime_get_sync(dev);
 
@@ -502,6 +503,8 @@ int inv_icm42600_buffer_fifo_read(struct inv_icm42600_state *st,
 
 int inv_icm42600_buffer_fifo_parse(struct inv_icm42600_state *st)
 {
+	struct inv_icm42600_sensor_state *gyro_st = iio_priv(st->indio_gyro);
+	struct inv_icm42600_sensor_state *accel_st = iio_priv(st->indio_accel);
 	struct inv_sensors_timestamp *ts;
 	int ret;
 
@@ -509,20 +512,20 @@ int inv_icm42600_buffer_fifo_parse(struct inv_icm42600_state *st)
 		return 0;
 
 	/* handle gyroscope timestamp and FIFO data parsing */
-	ts = iio_priv(st->indio_gyro);
-	inv_sensors_timestamp_interrupt(ts, st->fifo.period, st->fifo.nb.total,
-					st->fifo.nb.gyro, st->timestamp.gyro);
 	if (st->fifo.nb.gyro > 0) {
+		ts = &gyro_st->ts;
+		inv_sensors_timestamp_interrupt(ts, st->fifo.nb.gyro,
+						st->timestamp.gyro);
 		ret = inv_icm42600_gyro_parse_fifo(st->indio_gyro);
 		if (ret)
 			return ret;
 	}
 
 	/* handle accelerometer timestamp and FIFO data parsing */
-	ts = iio_priv(st->indio_accel);
-	inv_sensors_timestamp_interrupt(ts, st->fifo.period, st->fifo.nb.total,
-					st->fifo.nb.accel, st->timestamp.accel);
 	if (st->fifo.nb.accel > 0) {
+		ts = &accel_st->ts;
+		inv_sensors_timestamp_interrupt(ts, st->fifo.nb.accel,
+						st->timestamp.accel);
 		ret = inv_icm42600_accel_parse_fifo(st->indio_accel);
 		if (ret)
 			return ret;
@@ -534,6 +537,8 @@ int inv_icm42600_buffer_fifo_parse(struct inv_icm42600_state *st)
 int inv_icm42600_buffer_hwfifo_flush(struct inv_icm42600_state *st,
 				     unsigned int count)
 {
+	struct inv_icm42600_sensor_state *gyro_st = iio_priv(st->indio_gyro);
+	struct inv_icm42600_sensor_state *accel_st = iio_priv(st->indio_accel);
 	struct inv_sensors_timestamp *ts;
 	int64_t gyro_ts, accel_ts;
 	int ret;
@@ -549,20 +554,16 @@ int inv_icm42600_buffer_hwfifo_flush(struct inv_icm42600_state *st,
 		return 0;
 
 	if (st->fifo.nb.gyro > 0) {
-		ts = iio_priv(st->indio_gyro);
-		inv_sensors_timestamp_interrupt(ts, st->fifo.period,
-						st->fifo.nb.total, st->fifo.nb.gyro,
-						gyro_ts);
+		ts = &gyro_st->ts;
+		inv_sensors_timestamp_interrupt(ts, st->fifo.nb.gyro, gyro_ts);
 		ret = inv_icm42600_gyro_parse_fifo(st->indio_gyro);
 		if (ret)
 			return ret;
 	}
 
 	if (st->fifo.nb.accel > 0) {
-		ts = iio_priv(st->indio_accel);
-		inv_sensors_timestamp_interrupt(ts, st->fifo.period,
-						st->fifo.nb.total, st->fifo.nb.accel,
-						accel_ts);
+		ts = &accel_st->ts;
+		inv_sensors_timestamp_interrupt(ts, st->fifo.nb.accel, accel_ts);
 		ret = inv_icm42600_accel_parse_fifo(st->indio_accel);
 		if (ret)
 			return ret;
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
index a5e81906e37e..96116a68ab29 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
@@ -66,6 +66,22 @@ static const struct inv_icm42600_conf inv_icm42600_default_conf = {
 	.temp_en = false,
 };
 
+static const struct inv_icm42600_conf inv_icm42686_default_conf = {
+	.gyro = {
+		.mode = INV_ICM42600_SENSOR_MODE_OFF,
+		.fs = INV_ICM42686_GYRO_FS_4000DPS,
+		.odr = INV_ICM42600_ODR_50HZ,
+		.filter = INV_ICM42600_FILTER_BW_ODR_DIV_2,
+	},
+	.accel = {
+		.mode = INV_ICM42600_SENSOR_MODE_OFF,
+		.fs = INV_ICM42686_ACCEL_FS_32G,
+		.odr = INV_ICM42600_ODR_50HZ,
+		.filter = INV_ICM42600_FILTER_BW_ODR_DIV_2,
+	},
+	.temp_en = false,
+};
+
 static const struct inv_icm42600_hw inv_icm42600_hw[INV_CHIP_NB] = {
 	[INV_CHIP_ICM42600] = {
 		.whoami = INV_ICM42600_WHOAMI_ICM42600,
@@ -82,11 +98,21 @@ static const struct inv_icm42600_hw inv_icm42600_hw[INV_CHIP_NB] = {
 		.name = "icm42605",
 		.conf = &inv_icm42600_default_conf,
 	},
+	[INV_CHIP_ICM42686] = {
+		.whoami = INV_ICM42600_WHOAMI_ICM42686,
+		.name = "icm42686",
+		.conf = &inv_icm42686_default_conf,
+	},
 	[INV_CHIP_ICM42622] = {
 		.whoami = INV_ICM42600_WHOAMI_ICM42622,
 		.name = "icm42622",
 		.conf = &inv_icm42600_default_conf,
 	},
+	[INV_CHIP_ICM42688] = {
+		.whoami = INV_ICM42600_WHOAMI_ICM42688,
+		.name = "icm42688",
+		.conf = &inv_icm42600_default_conf,
+	},
 	[INV_CHIP_ICM42631] = {
 		.whoami = INV_ICM42600_WHOAMI_ICM42631,
 		.name = "icm42631",
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c
index 3df0a715e885..e6f8de80128c 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c
@@ -99,7 +99,8 @@ static int inv_icm42600_gyro_update_scan_mode(struct iio_dev *indio_dev,
 					      const unsigned long *scan_mask)
 {
 	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
-	struct inv_sensors_timestamp *ts = iio_priv(indio_dev);
+	struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev);
+	struct inv_sensors_timestamp *ts = &gyro_st->ts;
 	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
 	unsigned int fifo_en = 0;
 	unsigned int sleep_gyro = 0;
@@ -222,33 +223,63 @@ static const int inv_icm42600_gyro_scale[] = {
 	[2 * INV_ICM42600_GYRO_FS_15_625DPS] = 0,
 	[2 * INV_ICM42600_GYRO_FS_15_625DPS + 1] = 8322,
 };
+static const int inv_icm42686_gyro_scale[] = {
+	/* +/- 4000dps => 0.002130529 rad/s */
+	[2 * INV_ICM42686_GYRO_FS_4000DPS] = 0,
+	[2 * INV_ICM42686_GYRO_FS_4000DPS + 1] = 2130529,
+	/* +/- 2000dps => 0.001065264 rad/s */
+	[2 * INV_ICM42686_GYRO_FS_2000DPS] = 0,
+	[2 * INV_ICM42686_GYRO_FS_2000DPS + 1] = 1065264,
+	/* +/- 1000dps => 0.000532632 rad/s */
+	[2 * INV_ICM42686_GYRO_FS_1000DPS] = 0,
+	[2 * INV_ICM42686_GYRO_FS_1000DPS + 1] = 532632,
+	/* +/- 500dps => 0.000266316 rad/s */
+	[2 * INV_ICM42686_GYRO_FS_500DPS] = 0,
+	[2 * INV_ICM42686_GYRO_FS_500DPS + 1] = 266316,
+	/* +/- 250dps => 0.000133158 rad/s */
+	[2 * INV_ICM42686_GYRO_FS_250DPS] = 0,
+	[2 * INV_ICM42686_GYRO_FS_250DPS + 1] = 133158,
+	/* +/- 125dps => 0.000066579 rad/s */
+	[2 * INV_ICM42686_GYRO_FS_125DPS] = 0,
+	[2 * INV_ICM42686_GYRO_FS_125DPS + 1] = 66579,
+	/* +/- 62.5dps => 0.000033290 rad/s */
+	[2 * INV_ICM42686_GYRO_FS_62_5DPS] = 0,
+	[2 * INV_ICM42686_GYRO_FS_62_5DPS + 1] = 33290,
+	/* +/- 31.25dps => 0.000016645 rad/s */
+	[2 * INV_ICM42686_GYRO_FS_31_25DPS] = 0,
+	[2 * INV_ICM42686_GYRO_FS_31_25DPS + 1] = 16645,
+};
 
-static int inv_icm42600_gyro_read_scale(struct inv_icm42600_state *st,
+static int inv_icm42600_gyro_read_scale(struct iio_dev *indio_dev,
 					int *val, int *val2)
 {
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev);
 	unsigned int idx;
 
 	idx = st->conf.gyro.fs;
 
-	*val = inv_icm42600_gyro_scale[2 * idx];
-	*val2 = inv_icm42600_gyro_scale[2 * idx + 1];
+	*val = gyro_st->scales[2 * idx];
+	*val2 = gyro_st->scales[2 * idx + 1];
 	return IIO_VAL_INT_PLUS_NANO;
 }
 
-static int inv_icm42600_gyro_write_scale(struct inv_icm42600_state *st,
+static int inv_icm42600_gyro_write_scale(struct iio_dev *indio_dev,
 					 int val, int val2)
 {
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev);
 	struct device *dev = regmap_get_device(st->map);
 	unsigned int idx;
 	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
 	int ret;
 
-	for (idx = 0; idx < ARRAY_SIZE(inv_icm42600_gyro_scale); idx += 2) {
-		if (val == inv_icm42600_gyro_scale[idx] &&
-		    val2 == inv_icm42600_gyro_scale[idx + 1])
+	for (idx = 0; idx < gyro_st->scales_len; idx += 2) {
+		if (val == gyro_st->scales[idx] &&
+		    val2 == gyro_st->scales[idx + 1])
 			break;
 	}
-	if (idx >= ARRAY_SIZE(inv_icm42600_gyro_scale))
+	if (idx >= gyro_st->scales_len)
 		return -EINVAL;
 
 	conf.fs = idx / 2;
@@ -321,7 +352,8 @@ static int inv_icm42600_gyro_write_odr(struct iio_dev *indio_dev,
 				       int val, int val2)
 {
 	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
-	struct inv_sensors_timestamp *ts = iio_priv(indio_dev);
+	struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev);
+	struct inv_sensors_timestamp *ts = &gyro_st->ts;
 	struct device *dev = regmap_get_device(st->map);
 	unsigned int idx;
 	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
@@ -576,7 +608,7 @@ static int inv_icm42600_gyro_read_raw(struct iio_dev *indio_dev,
 		*val = data;
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
-		return inv_icm42600_gyro_read_scale(st, val, val2);
+		return inv_icm42600_gyro_read_scale(indio_dev, val, val2);
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		return inv_icm42600_gyro_read_odr(st, val, val2);
 	case IIO_CHAN_INFO_CALIBBIAS:
@@ -591,14 +623,16 @@ static int inv_icm42600_gyro_read_avail(struct iio_dev *indio_dev,
 					const int **vals,
 					int *type, int *length, long mask)
 {
+	struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev);
+
 	if (chan->type != IIO_ANGL_VEL)
 		return -EINVAL;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_SCALE:
-		*vals = inv_icm42600_gyro_scale;
+		*vals = gyro_st->scales;
 		*type = IIO_VAL_INT_PLUS_NANO;
-		*length = ARRAY_SIZE(inv_icm42600_gyro_scale);
+		*length = gyro_st->scales_len;
 		return IIO_AVAIL_LIST;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		*vals = inv_icm42600_gyro_odr;
@@ -629,7 +663,7 @@ static int inv_icm42600_gyro_write_raw(struct iio_dev *indio_dev,
 		ret = iio_device_claim_direct_mode(indio_dev);
 		if (ret)
 			return ret;
-		ret = inv_icm42600_gyro_write_scale(st, val, val2);
+		ret = inv_icm42600_gyro_write_scale(indio_dev, val, val2);
 		iio_device_release_direct_mode(indio_dev);
 		return ret;
 	case IIO_CHAN_INFO_SAMP_FREQ:
@@ -716,8 +750,8 @@ struct iio_dev *inv_icm42600_gyro_init(struct inv_icm42600_state *st)
 {
 	struct device *dev = regmap_get_device(st->map);
 	const char *name;
+	struct inv_icm42600_sensor_state *gyro_st;
 	struct inv_sensors_timestamp_chip ts_chip;
-	struct inv_sensors_timestamp *ts;
 	struct iio_dev *indio_dev;
 	int ret;
 
@@ -725,9 +759,21 @@ struct iio_dev *inv_icm42600_gyro_init(struct inv_icm42600_state *st)
 	if (!name)
 		return ERR_PTR(-ENOMEM);
 
-	indio_dev = devm_iio_device_alloc(dev, sizeof(*ts));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*gyro_st));
 	if (!indio_dev)
 		return ERR_PTR(-ENOMEM);
+	gyro_st = iio_priv(indio_dev);
+
+	switch (st->chip) {
+	case INV_CHIP_ICM42686:
+		gyro_st->scales = inv_icm42686_gyro_scale;
+		gyro_st->scales_len = ARRAY_SIZE(inv_icm42686_gyro_scale);
+		break;
+	default:
+		gyro_st->scales = inv_icm42600_gyro_scale;
+		gyro_st->scales_len = ARRAY_SIZE(inv_icm42600_gyro_scale);
+		break;
+	}
 
 	/*
 	 * clock period is 32kHz (31250ns)
@@ -736,8 +782,7 @@ struct iio_dev *inv_icm42600_gyro_init(struct inv_icm42600_state *st)
 	ts_chip.clock_period = 31250;
 	ts_chip.jitter = 20;
 	ts_chip.init_period = inv_icm42600_odr_to_period(st->conf.accel.odr);
-	ts = iio_priv(indio_dev);
-	inv_sensors_timestamp_init(ts, &ts_chip);
+	inv_sensors_timestamp_init(&gyro_st->ts, &ts_chip);
 
 	iio_device_set_drvdata(indio_dev, st);
 	indio_dev->name = name;
@@ -763,7 +808,8 @@ struct iio_dev *inv_icm42600_gyro_init(struct inv_icm42600_state *st)
 int inv_icm42600_gyro_parse_fifo(struct iio_dev *indio_dev)
 {
 	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
-	struct inv_sensors_timestamp *ts = iio_priv(indio_dev);
+	struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev);
+	struct inv_sensors_timestamp *ts = &gyro_st->ts;
 	ssize_t i, size;
 	unsigned int no;
 	const void *accel, *gyro, *timestamp;
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c
index 1af559403ba6..8d33504d770f 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c
@@ -82,9 +82,15 @@ static const struct of_device_id inv_icm42600_of_matches[] = {
 		.compatible = "invensense,icm42605",
 		.data = (void *)INV_CHIP_ICM42605,
 	}, {
+		.compatible = "invensense,icm42686",
+		.data = (void *)INV_CHIP_ICM42686,
+	}, {
 		.compatible = "invensense,icm42622",
 		.data = (void *)INV_CHIP_ICM42622,
 	}, {
+		.compatible = "invensense,icm42688",
+		.data = (void *)INV_CHIP_ICM42688,
+	}, {
 		.compatible = "invensense,icm42631",
 		.data = (void *)INV_CHIP_ICM42631,
 	},
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c
index 6be4ac794937..cc2bf1799a46 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c
@@ -78,9 +78,15 @@ static const struct of_device_id inv_icm42600_of_matches[] = {
 		.compatible = "invensense,icm42605",
 		.data = (void *)INV_CHIP_ICM42605,
 	}, {
+		.compatible = "invensense,icm42686",
+		.data = (void *)INV_CHIP_ICM42686,
+	}, {
 		.compatible = "invensense,icm42622",
 		.data = (void *)INV_CHIP_ICM42622,
 	}, {
+		.compatible = "invensense,icm42688",
+		.data = (void *)INV_CHIP_ICM42688,
+	}, {
 		.compatible = "invensense,icm42631",
 		.data = (void *)INV_CHIP_ICM42631,
 	},
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
index 0e94e5335e93..14d95f34e981 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
@@ -15,6 +15,8 @@
 #include <linux/acpi.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
+#include <linux/math64.h>
+#include <linux/minmax.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
 #include <linux/property.h>
@@ -287,7 +289,7 @@ static const struct inv_mpu6050_hw hw_info[] = {
 };
 
 static int inv_mpu6050_pwr_mgmt_1_write(struct inv_mpu6050_state *st, bool sleep,
-					int clock, int temp_dis)
+					bool cycle, int clock, int temp_dis)
 {
 	u8 val;
 
@@ -301,6 +303,8 @@ static int inv_mpu6050_pwr_mgmt_1_write(struct inv_mpu6050_state *st, bool sleep
 		val |= INV_MPU6050_BIT_TEMP_DIS;
 	if (sleep)
 		val |= INV_MPU6050_BIT_SLEEP;
+	if (cycle)
+		val |= INV_MPU6050_BIT_CYCLE;
 
 	dev_dbg(regmap_get_device(st->map), "pwr_mgmt_1: 0x%x\n", val);
 	return regmap_write(st->map, st->reg->pwr_mgmt_1, val);
@@ -316,7 +320,7 @@ static int inv_mpu6050_clock_switch(struct inv_mpu6050_state *st,
 	case INV_MPU6000:
 	case INV_MPU9150:
 		/* old chips: switch clock manually */
-		ret = inv_mpu6050_pwr_mgmt_1_write(st, false, clock, -1);
+		ret = inv_mpu6050_pwr_mgmt_1_write(st, false, false, clock, -1);
 		if (ret)
 			return ret;
 		st->chip_config.clk = clock;
@@ -332,7 +336,7 @@ static int inv_mpu6050_clock_switch(struct inv_mpu6050_state *st,
 int inv_mpu6050_switch_engine(struct inv_mpu6050_state *st, bool en,
 			      unsigned int mask)
 {
-	unsigned int sleep;
+	unsigned int sleep, val;
 	u8 pwr_mgmt2, user_ctrl;
 	int ret;
 
@@ -345,12 +349,20 @@ int inv_mpu6050_switch_engine(struct inv_mpu6050_state *st, bool en,
 		mask &= ~INV_MPU6050_SENSOR_TEMP;
 	if (mask & INV_MPU6050_SENSOR_MAGN && en == st->chip_config.magn_en)
 		mask &= ~INV_MPU6050_SENSOR_MAGN;
+	if (mask & INV_MPU6050_SENSOR_WOM && en == st->chip_config.wom_en)
+		mask &= ~INV_MPU6050_SENSOR_WOM;
+
+	/* force accel on if WoM is on and not going off */
+	if (!en && (mask & INV_MPU6050_SENSOR_ACCL) && st->chip_config.wom_en &&
+			!(mask & INV_MPU6050_SENSOR_WOM))
+		mask &= ~INV_MPU6050_SENSOR_ACCL;
+
 	if (mask == 0)
 		return 0;
 
 	/* turn on/off temperature sensor */
 	if (mask & INV_MPU6050_SENSOR_TEMP) {
-		ret = inv_mpu6050_pwr_mgmt_1_write(st, false, -1, !en);
+		ret = inv_mpu6050_pwr_mgmt_1_write(st, false, false, -1, !en);
 		if (ret)
 			return ret;
 		st->chip_config.temp_en = en;
@@ -439,6 +451,16 @@ int inv_mpu6050_switch_engine(struct inv_mpu6050_state *st, bool en,
 		}
 	}
 
+	/* enable/disable accel intelligence control */
+	if (mask & INV_MPU6050_SENSOR_WOM) {
+		val = en ? INV_MPU6500_BIT_ACCEL_INTEL_EN |
+			   INV_MPU6500_BIT_ACCEL_INTEL_MODE : 0;
+		ret = regmap_write(st->map, INV_MPU6500_REG_ACCEL_INTEL_CTRL, val);
+		if (ret)
+			return ret;
+		st->chip_config.wom_en = en;
+	}
+
 	return 0;
 }
 
@@ -447,7 +469,7 @@ static int inv_mpu6050_set_power_itg(struct inv_mpu6050_state *st,
 {
 	int result;
 
-	result = inv_mpu6050_pwr_mgmt_1_write(st, !power_on, -1, -1);
+	result = inv_mpu6050_pwr_mgmt_1_write(st, !power_on, false, -1, -1);
 	if (result)
 		return result;
 
@@ -477,22 +499,9 @@ static int inv_mpu6050_set_gyro_fsr(struct inv_mpu6050_state *st,
 	return regmap_write(st->map, st->reg->gyro_config, data);
 }
 
-/*
- *  inv_mpu6050_set_lpf_regs() - set low pass filter registers, chip dependent
- *
- *  MPU60xx/MPU9150 use only 1 register for accelerometer + gyroscope
- *  MPU6500 and above have a dedicated register for accelerometer
- */
-static int inv_mpu6050_set_lpf_regs(struct inv_mpu6050_state *st,
-				    enum inv_mpu6050_filter_e val)
+static int inv_mpu6050_set_accel_lpf_regs(struct inv_mpu6050_state *st,
+					  enum inv_mpu6050_filter_e val)
 {
-	int result;
-
-	result = regmap_write(st->map, st->reg->lpf, val);
-	if (result)
-		return result;
-
-	/* set accel lpf */
 	switch (st->chip_type) {
 	case INV_MPU6050:
 	case INV_MPU6000:
@@ -512,6 +521,25 @@ static int inv_mpu6050_set_lpf_regs(struct inv_mpu6050_state *st,
 }
 
 /*
+ *  inv_mpu6050_set_lpf_regs() - set low pass filter registers, chip dependent
+ *
+ *  MPU60xx/MPU9150 use only 1 register for accelerometer + gyroscope
+ *  MPU6500 and above have a dedicated register for accelerometer
+ */
+static int inv_mpu6050_set_lpf_regs(struct inv_mpu6050_state *st,
+				    enum inv_mpu6050_filter_e val)
+{
+	int result;
+
+	result = regmap_write(st->map, st->reg->lpf, val);
+	if (result)
+		return result;
+
+	/* set accel lpf */
+	return inv_mpu6050_set_accel_lpf_regs(st, val);
+}
+
+/*
  *  inv_mpu6050_init_config() - Initialize hardware, disable FIFO.
  *
  *  Initial configuration:
@@ -893,6 +921,317 @@ error_write_raw_unlock:
 	return result;
 }
 
+static u64 inv_mpu6050_convert_wom_to_roc(unsigned int threshold, unsigned int freq_div)
+{
+	/* 4mg per LSB converted in m/s² in micro (1000000) */
+	const unsigned int convert = 4U * 9807U;
+	u64 value;
+
+	value = threshold * convert;
+
+	/* compute the differential by multiplying by the frequency */
+	return div_u64(value * INV_MPU6050_INTERNAL_FREQ_HZ, freq_div);
+}
+
+static unsigned int inv_mpu6050_convert_roc_to_wom(u64 roc, unsigned int freq_div)
+{
+	/* 4mg per LSB converted in m/s² in micro (1000000) */
+	const unsigned int convert = 4U * 9807U;
+	u64 value;
+
+	/* return 0 only if roc is 0 */
+	if (roc == 0)
+		return 0;
+
+	value = div_u64(roc * freq_div, convert * INV_MPU6050_INTERNAL_FREQ_HZ);
+
+	/* limit value to 8 bits and prevent 0 */
+	return min(255, max(1, value));
+}
+
+static int inv_mpu6050_set_wom_int(struct inv_mpu6050_state *st, bool on)
+{
+	unsigned int reg_val, val;
+
+	switch (st->chip_type) {
+	case INV_MPU6050:
+	case INV_MPU6500:
+	case INV_MPU6515:
+	case INV_MPU6880:
+	case INV_MPU6000:
+	case INV_MPU9150:
+	case INV_MPU9250:
+	case INV_MPU9255:
+		reg_val = INV_MPU6500_BIT_WOM_INT_EN;
+		break;
+	default:
+		reg_val = INV_ICM20608_BIT_WOM_INT_EN;
+		break;
+	}
+
+	val = on ? reg_val : 0;
+
+	return regmap_update_bits(st->map, st->reg->int_enable, reg_val, val);
+}
+
+static int inv_mpu6050_set_wom_threshold(struct inv_mpu6050_state *st, u64 value,
+					 unsigned int freq_div)
+{
+	unsigned int threshold;
+	int result;
+
+	/* convert roc to wom threshold and convert back to handle clipping */
+	threshold = inv_mpu6050_convert_roc_to_wom(value, freq_div);
+	value = inv_mpu6050_convert_wom_to_roc(threshold, freq_div);
+
+	dev_dbg(regmap_get_device(st->map), "wom_threshold: 0x%x\n", threshold);
+
+	switch (st->chip_type) {
+	case INV_ICM20609:
+	case INV_ICM20689:
+	case INV_ICM20600:
+	case INV_ICM20602:
+	case INV_ICM20690:
+		st->data[0] = threshold;
+		st->data[1] = threshold;
+		st->data[2] = threshold;
+		result = regmap_bulk_write(st->map, INV_ICM20609_REG_ACCEL_WOM_X_THR,
+					   st->data, 3);
+		break;
+	default:
+		result = regmap_write(st->map, INV_MPU6500_REG_WOM_THRESHOLD, threshold);
+		break;
+	}
+	if (result)
+		return result;
+
+	st->chip_config.roc_threshold = value;
+
+	return 0;
+}
+
+static int inv_mpu6050_set_lp_odr(struct inv_mpu6050_state *st, unsigned int freq_div,
+				  unsigned int *lp_div)
+{
+	static const unsigned int freq_dividers[] = {2, 4, 8, 16, 32, 64, 128, 256};
+	static const unsigned int reg_values[] = {
+		INV_MPU6050_LPOSC_500HZ, INV_MPU6050_LPOSC_250HZ,
+		INV_MPU6050_LPOSC_125HZ, INV_MPU6050_LPOSC_62HZ,
+		INV_MPU6050_LPOSC_31HZ, INV_MPU6050_LPOSC_16HZ,
+		INV_MPU6050_LPOSC_8HZ, INV_MPU6050_LPOSC_4HZ,
+	};
+	unsigned int val, i;
+
+	switch (st->chip_type) {
+	case INV_ICM20609:
+	case INV_ICM20689:
+	case INV_ICM20600:
+	case INV_ICM20602:
+	case INV_ICM20690:
+		/* nothing to do */
+		*lp_div = INV_MPU6050_FREQ_DIVIDER(st);
+		return 0;
+	default:
+		break;
+	}
+
+	/* found the nearest superior frequency divider */
+	i = ARRAY_SIZE(reg_values) - 1;
+	val = reg_values[i];
+	*lp_div = freq_dividers[i];
+	for (i = 0; i < ARRAY_SIZE(freq_dividers); ++i) {
+		if (freq_div <= freq_dividers[i]) {
+			val = reg_values[i];
+			*lp_div = freq_dividers[i];
+			break;
+		}
+	}
+
+	dev_dbg(regmap_get_device(st->map), "lp_odr: 0x%x\n", val);
+	return regmap_write(st->map, INV_MPU6500_REG_LP_ODR, val);
+}
+
+static int inv_mpu6050_set_wom_lp(struct inv_mpu6050_state *st, bool on)
+{
+	unsigned int lp_div;
+	int result;
+
+	if (on) {
+		/* set low power ODR */
+		result = inv_mpu6050_set_lp_odr(st, INV_MPU6050_FREQ_DIVIDER(st), &lp_div);
+		if (result)
+			return result;
+		/* disable accel low pass filter */
+		result = inv_mpu6050_set_accel_lpf_regs(st, INV_MPU6050_FILTER_NOLPF);
+		if (result)
+			return result;
+		/* update wom threshold with new low-power frequency divider */
+		result = inv_mpu6050_set_wom_threshold(st, st->chip_config.roc_threshold, lp_div);
+		if (result)
+			return result;
+		/* set cycle mode */
+		result = inv_mpu6050_pwr_mgmt_1_write(st, false, true, -1, -1);
+	} else {
+		/* disable cycle mode */
+		result = inv_mpu6050_pwr_mgmt_1_write(st, false, false, -1, -1);
+		if (result)
+			return result;
+		/* restore wom threshold */
+		result = inv_mpu6050_set_wom_threshold(st, st->chip_config.roc_threshold,
+						       INV_MPU6050_FREQ_DIVIDER(st));
+		if (result)
+			return result;
+		/* restore accel low pass filter */
+		result = inv_mpu6050_set_accel_lpf_regs(st, st->chip_config.lpf);
+	}
+
+	return result;
+}
+
+static int inv_mpu6050_enable_wom(struct inv_mpu6050_state *st, bool en)
+{
+	struct device *pdev = regmap_get_device(st->map);
+	unsigned int mask;
+	int result;
+
+	if (en) {
+		result = pm_runtime_resume_and_get(pdev);
+		if (result)
+			return result;
+
+		mask = INV_MPU6050_SENSOR_ACCL | INV_MPU6050_SENSOR_WOM;
+		result = inv_mpu6050_switch_engine(st, true, mask);
+		if (result)
+			goto error_suspend;
+
+		result = inv_mpu6050_set_wom_int(st, true);
+		if (result)
+			goto error_suspend;
+	} else {
+		result = inv_mpu6050_set_wom_int(st, false);
+		if (result)
+			dev_err(pdev, "error %d disabling WoM interrupt bit", result);
+
+		/* disable only WoM and let accel be disabled by autosuspend */
+		result = inv_mpu6050_switch_engine(st, false, INV_MPU6050_SENSOR_WOM);
+		if (result) {
+			dev_err(pdev, "error %d disabling WoM force off", result);
+			/* force WoM off */
+			st->chip_config.wom_en = false;
+		}
+
+		pm_runtime_mark_last_busy(pdev);
+		pm_runtime_put_autosuspend(pdev);
+	}
+
+	return result;
+
+error_suspend:
+	pm_runtime_mark_last_busy(pdev);
+	pm_runtime_put_autosuspend(pdev);
+	return result;
+}
+
+static int inv_mpu6050_read_event_config(struct iio_dev *indio_dev,
+					 const struct iio_chan_spec *chan,
+					 enum iio_event_type type,
+					 enum iio_event_direction dir)
+{
+	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+
+	/* support only WoM (accel roc rising) event */
+	if (chan->type != IIO_ACCEL || type != IIO_EV_TYPE_ROC ||
+	    dir != IIO_EV_DIR_RISING)
+		return -EINVAL;
+
+	guard(mutex)(&st->lock);
+
+	return st->chip_config.wom_en ? 1 : 0;
+}
+
+static int inv_mpu6050_write_event_config(struct iio_dev *indio_dev,
+					  const struct iio_chan_spec *chan,
+					  enum iio_event_type type,
+					  enum iio_event_direction dir,
+					  int state)
+{
+	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+	int enable;
+
+	/* support only WoM (accel roc rising) event */
+	if (chan->type != IIO_ACCEL || type != IIO_EV_TYPE_ROC ||
+	    dir != IIO_EV_DIR_RISING)
+		return -EINVAL;
+
+	enable = !!state;
+
+	guard(mutex)(&st->lock);
+
+	if (st->chip_config.wom_en == enable)
+		return 0;
+
+	return inv_mpu6050_enable_wom(st, enable);
+}
+
+static int inv_mpu6050_read_event_value(struct iio_dev *indio_dev,
+					const struct iio_chan_spec *chan,
+					enum iio_event_type type,
+					enum iio_event_direction dir,
+					enum iio_event_info info,
+					int *val, int *val2)
+{
+	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+	u32 rem;
+
+	/* support only WoM (accel roc rising) event value */
+	if (chan->type != IIO_ACCEL || type != IIO_EV_TYPE_ROC ||
+	    dir != IIO_EV_DIR_RISING || info != IIO_EV_INFO_VALUE)
+		return -EINVAL;
+
+	guard(mutex)(&st->lock);
+
+	/* return value in micro */
+	*val = div_u64_rem(st->chip_config.roc_threshold, 1000000U, &rem);
+	*val2 = rem;
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int inv_mpu6050_write_event_value(struct iio_dev *indio_dev,
+					 const struct iio_chan_spec *chan,
+					 enum iio_event_type type,
+					 enum iio_event_direction dir,
+					 enum iio_event_info info,
+					 int val, int val2)
+{
+	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+	struct device *pdev = regmap_get_device(st->map);
+	u64 value;
+	int result;
+
+	/* support only WoM (accel roc rising) event value */
+	if (chan->type != IIO_ACCEL || type != IIO_EV_TYPE_ROC ||
+	    dir != IIO_EV_DIR_RISING || info != IIO_EV_INFO_VALUE)
+		return -EINVAL;
+
+	if (val < 0 || val2 < 0)
+		return -EINVAL;
+
+	guard(mutex)(&st->lock);
+
+	result = pm_runtime_resume_and_get(pdev);
+	if (result)
+		return result;
+
+	value = (u64)val * 1000000ULL + (u64)val2;
+	result = inv_mpu6050_set_wom_threshold(st, value, INV_MPU6050_FREQ_DIVIDER(st));
+
+	pm_runtime_mark_last_busy(pdev);
+	pm_runtime_put_autosuspend(pdev);
+
+	return result;
+}
+
 /*
  *  inv_mpu6050_set_lpf() - set low pass filer based on fifo rate.
  *
@@ -989,6 +1328,12 @@ inv_mpu6050_fifo_rate_store(struct device *dev, struct device_attribute *attr,
 	if (result)
 		goto fifo_rate_fail_power_off;
 
+	/* update wom threshold since roc is dependent on sampling frequency */
+	result = inv_mpu6050_set_wom_threshold(st, st->chip_config.roc_threshold,
+					       INV_MPU6050_FREQ_DIVIDER(st));
+	if (result)
+		goto fifo_rate_fail_power_off;
+
 	pm_runtime_mark_last_busy(pdev);
 fifo_rate_fail_power_off:
 	pm_runtime_put_autosuspend(pdev);
@@ -1089,6 +1434,15 @@ static const struct iio_chan_spec_ext_info inv_ext_info[] = {
 	{ }
 };
 
+static const struct iio_event_spec inv_wom_events[] = {
+	{
+		.type = IIO_EV_TYPE_ROC,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE) |
+				 BIT(IIO_EV_INFO_VALUE),
+	},
+};
+
 #define INV_MPU6050_CHAN(_type, _channel2, _index)                    \
 	{                                                             \
 		.type = _type,                                        \
@@ -1124,7 +1478,31 @@ static const struct iio_chan_spec_ext_info inv_ext_info[] = {
 		},						\
 	}
 
-static const struct iio_chan_spec inv_mpu_channels[] = {
+#define INV_MPU6050_EVENT_CHAN(_type, _channel2, _events, _events_nb)	\
+{									\
+	.type = _type,							\
+	.modified = 1,							\
+	.channel2 = _channel2,						\
+	.event_spec = _events,						\
+	.num_event_specs = _events_nb,					\
+	.scan_index = -1,						\
+}
+
+static const struct iio_chan_spec inv_mpu6050_channels[] = {
+	IIO_CHAN_SOFT_TIMESTAMP(INV_MPU6050_SCAN_TIMESTAMP),
+
+	INV_MPU6050_TEMP_CHAN(INV_MPU6050_SCAN_TEMP),
+
+	INV_MPU6050_CHAN(IIO_ANGL_VEL, IIO_MOD_X, INV_MPU6050_SCAN_GYRO_X),
+	INV_MPU6050_CHAN(IIO_ANGL_VEL, IIO_MOD_Y, INV_MPU6050_SCAN_GYRO_Y),
+	INV_MPU6050_CHAN(IIO_ANGL_VEL, IIO_MOD_Z, INV_MPU6050_SCAN_GYRO_Z),
+
+	INV_MPU6050_CHAN(IIO_ACCEL, IIO_MOD_X, INV_MPU6050_SCAN_ACCL_X),
+	INV_MPU6050_CHAN(IIO_ACCEL, IIO_MOD_Y, INV_MPU6050_SCAN_ACCL_Y),
+	INV_MPU6050_CHAN(IIO_ACCEL, IIO_MOD_Z, INV_MPU6050_SCAN_ACCL_Z),
+};
+
+static const struct iio_chan_spec inv_mpu6500_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(INV_MPU6050_SCAN_TIMESTAMP),
 
 	INV_MPU6050_TEMP_CHAN(INV_MPU6050_SCAN_TEMP),
@@ -1136,6 +1514,9 @@ static const struct iio_chan_spec inv_mpu_channels[] = {
 	INV_MPU6050_CHAN(IIO_ACCEL, IIO_MOD_X, INV_MPU6050_SCAN_ACCL_X),
 	INV_MPU6050_CHAN(IIO_ACCEL, IIO_MOD_Y, INV_MPU6050_SCAN_ACCL_Y),
 	INV_MPU6050_CHAN(IIO_ACCEL, IIO_MOD_Z, INV_MPU6050_SCAN_ACCL_Z),
+
+	INV_MPU6050_EVENT_CHAN(IIO_ACCEL, IIO_MOD_X_OR_Y_OR_Z,
+			       inv_wom_events, ARRAY_SIZE(inv_wom_events)),
 };
 
 #define INV_MPU6050_SCAN_MASK_3AXIS_ACCEL	\
@@ -1326,6 +1707,10 @@ static const struct iio_info mpu_info = {
 	.write_raw = &inv_mpu6050_write_raw,
 	.write_raw_get_fmt = &inv_write_raw_get_fmt,
 	.attrs = &inv_attribute_group,
+	.read_event_config = inv_mpu6050_read_event_config,
+	.write_event_config = inv_mpu6050_write_event_config,
+	.read_event_value = inv_mpu6050_read_event_value,
+	.write_event_value = inv_mpu6050_write_event_value,
 	.validate_trigger = inv_mpu6050_validate_trigger,
 	.debugfs_reg_access = &inv_mpu6050_reg_access,
 };
@@ -1537,6 +1922,7 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 			irq_type);
 		return -EINVAL;
 	}
+	device_set_wakeup_capable(dev, true);
 
 	st->vdd_supply = devm_regulator_get(dev, "vdd");
 	if (IS_ERR(st->vdd_supply))
@@ -1613,6 +1999,12 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 		return result;
 
 	switch (chip_type) {
+	case INV_MPU6000:
+	case INV_MPU6050:
+		indio_dev->channels = inv_mpu6050_channels;
+		indio_dev->num_channels = ARRAY_SIZE(inv_mpu6050_channels);
+		indio_dev->available_scan_masks = inv_mpu_scan_masks;
+		break;
 	case INV_MPU9150:
 		indio_dev->channels = inv_mpu9150_channels;
 		indio_dev->num_channels = ARRAY_SIZE(inv_mpu9150_channels);
@@ -1626,13 +2018,13 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 		break;
 	case INV_ICM20600:
 	case INV_ICM20602:
-		indio_dev->channels = inv_mpu_channels;
-		indio_dev->num_channels = ARRAY_SIZE(inv_mpu_channels);
+		indio_dev->channels = inv_mpu6500_channels;
+		indio_dev->num_channels = ARRAY_SIZE(inv_mpu6500_channels);
 		indio_dev->available_scan_masks = inv_icm20602_scan_masks;
 		break;
 	default:
-		indio_dev->channels = inv_mpu_channels;
-		indio_dev->num_channels = ARRAY_SIZE(inv_mpu_channels);
+		indio_dev->channels = inv_mpu6500_channels;
+		indio_dev->num_channels = ARRAY_SIZE(inv_mpu6500_channels);
 		indio_dev->available_scan_masks = inv_mpu_scan_masks;
 		break;
 	}
@@ -1641,9 +2033,18 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 	 * auxiliary device in use. Otherwise Going back to 6-axis only.
 	 */
 	if (st->magn_disabled) {
-		indio_dev->channels = inv_mpu_channels;
-		indio_dev->num_channels = ARRAY_SIZE(inv_mpu_channels);
-		indio_dev->available_scan_masks = inv_mpu_scan_masks;
+		switch (chip_type) {
+		case INV_MPU9150:
+			indio_dev->channels = inv_mpu6050_channels;
+			indio_dev->num_channels = ARRAY_SIZE(inv_mpu6050_channels);
+			indio_dev->available_scan_masks = inv_mpu_scan_masks;
+			break;
+		default:
+			indio_dev->channels = inv_mpu6500_channels;
+			indio_dev->num_channels = ARRAY_SIZE(inv_mpu6500_channels);
+			indio_dev->available_scan_masks = inv_mpu_scan_masks;
+			break;
+		}
 	}
 
 	indio_dev->info = &mpu_info;
@@ -1687,16 +2088,27 @@ static int inv_mpu_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+	bool wakeup;
 	int result;
 
-	mutex_lock(&st->lock);
-	result = inv_mpu_core_enable_regulator_vddio(st);
-	if (result)
-		goto out_unlock;
+	guard(mutex)(&st->lock);
 
-	result = inv_mpu6050_set_power_itg(st, true);
-	if (result)
-		goto out_unlock;
+	wakeup = device_may_wakeup(dev) && st->chip_config.wom_en;
+
+	if (wakeup) {
+		enable_irq(st->irq);
+		disable_irq_wake(st->irq);
+		result = inv_mpu6050_set_wom_lp(st, false);
+		if (result)
+			return result;
+	} else {
+		result = inv_mpu_core_enable_regulator_vddio(st);
+		if (result)
+			return result;
+		result = inv_mpu6050_set_power_itg(st, true);
+		if (result)
+			return result;
+	}
 
 	pm_runtime_disable(dev);
 	pm_runtime_set_active(dev);
@@ -1704,14 +2116,17 @@ static int inv_mpu_resume(struct device *dev)
 
 	result = inv_mpu6050_switch_engine(st, true, st->suspended_sensors);
 	if (result)
-		goto out_unlock;
+		return result;
+
+	if (st->chip_config.wom_en && !wakeup) {
+		result = inv_mpu6050_set_wom_int(st, true);
+		if (result)
+			return result;
+	}
 
 	if (iio_buffer_enabled(indio_dev))
 		result = inv_mpu6050_prepare_fifo(st, true);
 
-out_unlock:
-	mutex_unlock(&st->lock);
-
 	return result;
 }
 
@@ -1719,23 +2134,30 @@ static int inv_mpu_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+	bool wakeup;
 	int result;
 
-	mutex_lock(&st->lock);
+	guard(mutex)(&st->lock);
 
 	st->suspended_sensors = 0;
-	if (pm_runtime_suspended(dev)) {
-		result = 0;
-		goto out_unlock;
-	}
+	if (pm_runtime_suspended(dev))
+		return 0;
 
 	if (iio_buffer_enabled(indio_dev)) {
 		result = inv_mpu6050_prepare_fifo(st, false);
 		if (result)
-			goto out_unlock;
+			return result;
+	}
+
+	wakeup = device_may_wakeup(dev) && st->chip_config.wom_en;
+
+	if (st->chip_config.wom_en && !wakeup) {
+		result = inv_mpu6050_set_wom_int(st, false);
+		if (result)
+			return result;
 	}
 
-	if (st->chip_config.accl_en)
+	if (st->chip_config.accl_en && !wakeup)
 		st->suspended_sensors |= INV_MPU6050_SENSOR_ACCL;
 	if (st->chip_config.gyro_en)
 		st->suspended_sensors |= INV_MPU6050_SENSOR_GYRO;
@@ -1743,19 +2165,26 @@ static int inv_mpu_suspend(struct device *dev)
 		st->suspended_sensors |= INV_MPU6050_SENSOR_TEMP;
 	if (st->chip_config.magn_en)
 		st->suspended_sensors |= INV_MPU6050_SENSOR_MAGN;
+	if (st->chip_config.wom_en && !wakeup)
+		st->suspended_sensors |= INV_MPU6050_SENSOR_WOM;
 	result = inv_mpu6050_switch_engine(st, false, st->suspended_sensors);
 	if (result)
-		goto out_unlock;
-
-	result = inv_mpu6050_set_power_itg(st, false);
-	if (result)
-		goto out_unlock;
+		return result;
 
-	inv_mpu_core_disable_regulator_vddio(st);
-out_unlock:
-	mutex_unlock(&st->lock);
+	if (wakeup) {
+		result = inv_mpu6050_set_wom_lp(st, true);
+		if (result)
+			return result;
+		enable_irq_wake(st->irq);
+		disable_irq(st->irq);
+	} else {
+		result = inv_mpu6050_set_power_itg(st, false);
+		if (result)
+			return result;
+		inv_mpu_core_disable_regulator_vddio(st);
+	}
 
-	return result;
+	return 0;
 }
 
 static int inv_mpu_runtime_suspend(struct device *dev)
@@ -1767,7 +2196,8 @@ static int inv_mpu_runtime_suspend(struct device *dev)
 	mutex_lock(&st->lock);
 
 	sensors = INV_MPU6050_SENSOR_ACCL | INV_MPU6050_SENSOR_GYRO |
-			INV_MPU6050_SENSOR_TEMP | INV_MPU6050_SENSOR_MAGN;
+			INV_MPU6050_SENSOR_TEMP | INV_MPU6050_SENSOR_MAGN |
+			INV_MPU6050_SENSOR_WOM;
 	ret = inv_mpu6050_switch_engine(st, false, sensors);
 	if (ret)
 		goto out_unlock;
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
index 5950e2419ebb..e1c0c5146876 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
@@ -88,11 +88,12 @@ enum inv_devices {
 	INV_NUM_PARTS
 };
 
-/* chip sensors mask: accelerometer, gyroscope, temperature, magnetometer */
+/* chip sensors mask: accelerometer, gyroscope, temperature, magnetometer, WoM */
 #define INV_MPU6050_SENSOR_ACCL		BIT(0)
 #define INV_MPU6050_SENSOR_GYRO		BIT(1)
 #define INV_MPU6050_SENSOR_TEMP		BIT(2)
 #define INV_MPU6050_SENSOR_MAGN		BIT(3)
+#define INV_MPU6050_SENSOR_WOM		BIT(4)
 
 /**
  *  struct inv_mpu6050_chip_config - Cached chip configuration data.
@@ -104,11 +105,13 @@ enum inv_devices {
  *  @gyro_en:		gyro engine enabled
  *  @temp_en:		temperature sensor enabled
  *  @magn_en:		magn engine (i2c master) enabled
+ *  @wom_en:		Wake-on-Motion enabled
  *  @accl_fifo_enable:	enable accel data output
  *  @gyro_fifo_enable:	enable gyro data output
  *  @temp_fifo_enable:	enable temp data output
  *  @magn_fifo_enable:	enable magn data output
  *  @divider:		chip sample rate divider (sample rate divider - 1)
+ *  @roc_threshold:	save ROC threshold (WoM) set value
  */
 struct inv_mpu6050_chip_config {
 	unsigned int clk:3;
@@ -119,12 +122,14 @@ struct inv_mpu6050_chip_config {
 	unsigned int gyro_en:1;
 	unsigned int temp_en:1;
 	unsigned int magn_en:1;
+	unsigned int wom_en:1;
 	unsigned int accl_fifo_enable:1;
 	unsigned int gyro_fifo_enable:1;
 	unsigned int temp_fifo_enable:1;
 	unsigned int magn_fifo_enable:1;
 	u8 divider;
 	u8 user_ctrl;
+	u64 roc_threshold;
 };
 
 /*
@@ -180,6 +185,7 @@ struct inv_mpu6050_hw {
  *  @magn_orient:       magnetometer sensor chip orientation if available.
  *  @suspended_sensors:	sensors mask of sensors turned off for suspend
  *  @data:		read buffer used for bulk reads.
+ *  @it_timestamp:	interrupt timestamp.
  */
 struct inv_mpu6050_state {
 	struct mutex lock;
@@ -205,6 +211,7 @@ struct inv_mpu6050_state {
 	unsigned int suspended_sensors;
 	bool level_shifter;
 	u8 *data;
+	s64 it_timestamp;
 };
 
 /*register and associated bit definition*/
@@ -256,12 +263,16 @@ struct inv_mpu6050_state {
 #define INV_MPU6050_REG_INT_ENABLE          0x38
 #define INV_MPU6050_BIT_DATA_RDY_EN         0x01
 #define INV_MPU6050_BIT_DMP_INT_EN          0x02
+#define INV_MPU6500_BIT_WOM_INT_EN          BIT(6)
+#define INV_ICM20608_BIT_WOM_INT_EN         GENMASK(7, 5)
 
 #define INV_MPU6050_REG_RAW_ACCEL           0x3B
 #define INV_MPU6050_REG_TEMPERATURE         0x41
 #define INV_MPU6050_REG_RAW_GYRO            0x43
 
 #define INV_MPU6050_REG_INT_STATUS          0x3A
+#define INV_MPU6500_BIT_WOM_INT             BIT(6)
+#define INV_ICM20608_BIT_WOM_INT            GENMASK(7, 5)
 #define INV_MPU6050_BIT_FIFO_OVERFLOW_INT   0x10
 #define INV_MPU6050_BIT_RAW_DATA_RDY_INT    0x01
 
@@ -294,6 +305,7 @@ struct inv_mpu6050_state {
 #define INV_MPU6050_REG_PWR_MGMT_1          0x6B
 #define INV_MPU6050_BIT_H_RESET             0x80
 #define INV_MPU6050_BIT_SLEEP               0x40
+#define INV_MPU6050_BIT_CYCLE               0x20
 #define INV_MPU6050_BIT_TEMP_DIS            0x08
 #define INV_MPU6050_BIT_CLK_MASK            0x7
 
@@ -301,6 +313,11 @@ struct inv_mpu6050_state {
 #define INV_MPU6050_BIT_PWR_ACCL_STBY       0x38
 #define INV_MPU6050_BIT_PWR_GYRO_STBY       0x07
 
+/* ICM20609 registers */
+#define INV_ICM20609_REG_ACCEL_WOM_X_THR    0x20
+#define INV_ICM20609_REG_ACCEL_WOM_Y_THR    0x21
+#define INV_ICM20609_REG_ACCEL_WOM_Z_THR    0x22
+
 /* ICM20602 register */
 #define INV_ICM20602_REG_I2C_IF             0x70
 #define INV_ICM20602_BIT_I2C_IF_DIS         0x40
@@ -320,6 +337,11 @@ struct inv_mpu6050_state {
 /* mpu6500 registers */
 #define INV_MPU6500_REG_ACCEL_CONFIG_2      0x1D
 #define INV_ICM20689_BITS_FIFO_SIZE_MAX     0xC0
+#define INV_MPU6500_REG_LP_ODR              0x1E
+#define INV_MPU6500_REG_WOM_THRESHOLD       0x1F
+#define INV_MPU6500_REG_ACCEL_INTEL_CTRL    0x69
+#define INV_MPU6500_BIT_ACCEL_INTEL_EN      BIT(7)
+#define INV_MPU6500_BIT_ACCEL_INTEL_MODE    BIT(6)
 #define INV_MPU6500_REG_ACCEL_OFFSET        0x77
 
 /* delay time in milliseconds */
@@ -432,6 +454,18 @@ enum inv_mpu6050_filter_e {
 	NUM_MPU6050_FILTER
 };
 
+enum inv_mpu6050_lposc_e {
+	INV_MPU6050_LPOSC_4HZ = 4,
+	INV_MPU6050_LPOSC_8HZ,
+	INV_MPU6050_LPOSC_16HZ,
+	INV_MPU6050_LPOSC_31HZ,
+	INV_MPU6050_LPOSC_62HZ,
+	INV_MPU6050_LPOSC_125HZ,
+	INV_MPU6050_LPOSC_250HZ,
+	INV_MPU6050_LPOSC_500HZ,
+	NUM_MPU6050_LPOSC,
+};
+
 /* IIO attribute address */
 enum INV_MPU6050_IIO_ATTR_ADDR {
 	ATTR_GYRO_MATRIX,
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
index d4f9b5d8d28d..0dc0f22a5582 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
@@ -33,10 +33,8 @@ static int inv_reset_fifo(struct iio_dev *indio_dev)
 
 reset_fifo_fail:
 	dev_err(regmap_get_device(st->map), "reset fifo failed %d\n", result);
-	result = regmap_write(st->map, st->reg->int_enable,
-			      INV_MPU6050_BIT_DATA_RDY_EN);
-
-	return result;
+	return regmap_update_bits(st->map, st->reg->int_enable,
+			INV_MPU6050_BIT_DATA_RDY_EN, INV_MPU6050_BIT_DATA_RDY_EN);
 }
 
 /*
@@ -53,21 +51,10 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p)
 	u32 fifo_period;
 	s64 timestamp;
 	u8 data[INV_MPU6050_OUTPUT_DATA_SIZE];
-	int int_status;
 	size_t i, nb;
 
 	mutex_lock(&st->lock);
 
-	/* ack interrupt and check status */
-	result = regmap_read(st->map, st->reg->int_status, &int_status);
-	if (result) {
-		dev_err(regmap_get_device(st->map),
-			"failed to ack interrupt\n");
-		goto flush_fifo;
-	}
-	if (!(int_status & INV_MPU6050_BIT_RAW_DATA_RDY_INT))
-		goto end_session;
-
 	if (!(st->chip_config.accl_fifo_enable |
 		st->chip_config.gyro_fifo_enable |
 		st->chip_config.magn_fifo_enable))
@@ -113,7 +100,7 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p)
 		goto end_session;
 	/* Each FIFO data contains all sensors, so same number for FIFO and sensor data */
 	fifo_period = NSEC_PER_SEC / INV_MPU6050_DIVIDER_TO_FIFO_RATE(st->chip_config.divider);
-	inv_sensors_timestamp_interrupt(&st->timestamp, fifo_period, nb, nb, pf->timestamp);
+	inv_sensors_timestamp_interrupt(&st->timestamp, nb, pf->timestamp);
 	inv_sensors_timestamp_apply_odr(&st->timestamp, fifo_period, nb, 0);
 
 	/* clear internal data buffer for avoiding kernel data leak */
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
index e6e6e94452a3..1b603567ccc8 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
@@ -6,6 +6,7 @@
 #include <linux/pm_runtime.h>
 
 #include <linux/iio/common/inv_sensors_timestamp.h>
+#include <linux/iio/events.h>
 
 #include "inv_mpu_iio.h"
 
@@ -135,11 +136,13 @@ int inv_mpu6050_prepare_fifo(struct inv_mpu6050_state *st, bool enable)
 		ret = regmap_write(st->map, st->reg->user_ctrl, d);
 		if (ret)
 			return ret;
-		/* enable interrupt */
-		ret = regmap_write(st->map, st->reg->int_enable,
-				   INV_MPU6050_BIT_DATA_RDY_EN);
+		/* enable data interrupt */
+		ret = regmap_update_bits(st->map, st->reg->int_enable,
+				INV_MPU6050_BIT_DATA_RDY_EN, INV_MPU6050_BIT_DATA_RDY_EN);
 	} else {
-		ret = regmap_write(st->map, st->reg->int_enable, 0);
+		/* disable data interrupt */
+		ret = regmap_update_bits(st->map, st->reg->int_enable,
+				INV_MPU6050_BIT_DATA_RDY_EN, 0);
 		if (ret)
 			return ret;
 		ret = regmap_write(st->map, st->reg->fifo_en, 0);
@@ -172,9 +175,9 @@ static int inv_mpu6050_set_enable(struct iio_dev *indio_dev, bool enable)
 			return result;
 		/*
 		 * In case autosuspend didn't trigger, turn off first not
-		 * required sensors.
+		 * required sensors excepted WoM
 		 */
-		result = inv_mpu6050_switch_engine(st, false, ~scan);
+		result = inv_mpu6050_switch_engine(st, false, ~scan & ~INV_MPU6050_SENSOR_WOM);
 		if (result)
 			goto error_power_off;
 		result = inv_mpu6050_switch_engine(st, true, scan);
@@ -226,6 +229,65 @@ static const struct iio_trigger_ops inv_mpu_trigger_ops = {
 	.set_trigger_state = &inv_mpu_data_rdy_trigger_set_state,
 };
 
+static irqreturn_t inv_mpu6050_interrupt_timestamp(int irq, void *p)
+{
+	struct iio_dev *indio_dev = p;
+	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+
+	st->it_timestamp = iio_get_time_ns(indio_dev);
+
+	return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t inv_mpu6050_interrupt_handle(int irq, void *p)
+{
+	struct iio_dev *indio_dev = p;
+	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+	unsigned int int_status, wom_bits;
+	u64 ev_code;
+	int result;
+
+	switch (st->chip_type) {
+	case INV_MPU6050:
+	case INV_MPU6500:
+	case INV_MPU6515:
+	case INV_MPU6880:
+	case INV_MPU6000:
+	case INV_MPU9150:
+	case INV_MPU9250:
+	case INV_MPU9255:
+		wom_bits = INV_MPU6500_BIT_WOM_INT;
+		break;
+	default:
+		wom_bits = INV_ICM20608_BIT_WOM_INT;
+		break;
+	}
+
+	scoped_guard(mutex, &st->lock) {
+		/* ack interrupt and check status */
+		result = regmap_read(st->map, st->reg->int_status, &int_status);
+		if (result) {
+			dev_err(regmap_get_device(st->map), "failed to ack interrupt\n");
+			return IRQ_HANDLED;
+		}
+
+		/* handle WoM event */
+		if (st->chip_config.wom_en && (int_status & wom_bits)) {
+			ev_code = IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_X_OR_Y_OR_Z,
+						     IIO_EV_TYPE_ROC, IIO_EV_DIR_RISING);
+			iio_push_event(indio_dev, ev_code, st->it_timestamp);
+		}
+	}
+
+	/* handle raw data interrupt */
+	if (int_status & INV_MPU6050_BIT_RAW_DATA_RDY_INT) {
+		indio_dev->pollfunc->timestamp = st->it_timestamp;
+		iio_trigger_poll_nested(st->trig);
+	}
+
+	return IRQ_HANDLED;
+}
+
 int inv_mpu6050_probe_trigger(struct iio_dev *indio_dev, int irq_type)
 {
 	int ret;
@@ -238,11 +300,10 @@ int inv_mpu6050_probe_trigger(struct iio_dev *indio_dev, int irq_type)
 	if (!st->trig)
 		return -ENOMEM;
 
-	ret = devm_request_irq(&indio_dev->dev, st->irq,
-			       &iio_trigger_generic_data_rdy_poll,
-			       irq_type,
-			       "inv_mpu",
-			       st->trig);
+	ret = devm_request_threaded_irq(&indio_dev->dev, st->irq,
+					&inv_mpu6050_interrupt_timestamp,
+					&inv_mpu6050_interrupt_handle,
+					irq_type, "inv_mpu", indio_dev);
 	if (ret)
 		return ret;
 
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index 0716986f9812..937ff9c5a74c 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -2726,7 +2726,7 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
 	if (!hw)
 		return -ENOMEM;
 
-	dev_set_drvdata(dev, (void *)hw);
+	dev_set_drvdata(dev, hw);
 
 	mutex_init(&hw->fifo_lock);
 	mutex_init(&hw->conf_lock);
diff --git a/drivers/iio/industrialio-acpi.c b/drivers/iio/industrialio-acpi.c
new file mode 100644
index 000000000000..981b75d40780
--- /dev/null
+++ b/drivers/iio/industrialio-acpi.c
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* IIO ACPI helper functions */
+
+#include <linux/acpi.h>
+#include <linux/dev_printk.h>
+#include <linux/iio/iio.h>
+#include <linux/sprintf.h>
+
+/**
+ * iio_read_acpi_mount_matrix() - Read accelerometer mount matrix info from ACPI
+ * @dev:		Device structure
+ * @orientation:	iio_mount_matrix struct to fill
+ * @acpi_method:	ACPI method name to read the matrix from, usually "ROTM"
+ *
+ * Try to read the mount-matrix by calling the specified method on the device's
+ * ACPI firmware-node. If the device has no ACPI firmware-node; or the method
+ * does not exist then this will fail silently. This expects the method to
+ * return data in the ACPI "ROTM" format defined by Microsoft:
+ * https://learn.microsoft.com/en-us/windows-hardware/drivers/sensors/sensors-acpi-entries
+ * This is a Microsoft extension and not part of the official ACPI spec.
+ * The method name is configurable because some dual-accel setups define 2 mount
+ * matrices in a single ACPI device using separate "ROMK" and "ROMS" methods.
+ *
+ * Returns: true if the matrix was successfully, false otherwise.
+ */
+bool iio_read_acpi_mount_matrix(struct device *dev,
+				struct iio_mount_matrix *orientation,
+				char *acpi_method)
+{
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	struct acpi_device *adev = ACPI_COMPANION(dev);
+	char *str;
+	union acpi_object *obj, *elements;
+	acpi_status status;
+	int i, j, val[3];
+	bool ret = false;
+
+	if (!adev || !acpi_has_method(adev->handle, acpi_method))
+		return false;
+
+	status = acpi_evaluate_object(adev->handle, acpi_method, NULL, &buffer);
+	if (ACPI_FAILURE(status)) {
+		dev_err(dev, "Failed to get ACPI mount matrix: %d\n", status);
+		return false;
+	}
+
+	obj = buffer.pointer;
+	if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 3) {
+		dev_err(dev, "Unknown ACPI mount matrix package format\n");
+		goto out_free_buffer;
+	}
+
+	elements = obj->package.elements;
+	for (i = 0; i < 3; i++) {
+		if (elements[i].type != ACPI_TYPE_STRING) {
+			dev_err(dev, "Unknown ACPI mount matrix element format\n");
+			goto out_free_buffer;
+		}
+
+		str = elements[i].string.pointer;
+		if (sscanf(str, "%d %d %d", &val[0], &val[1], &val[2]) != 3) {
+			dev_err(dev, "Incorrect ACPI mount matrix string format\n");
+			goto out_free_buffer;
+		}
+
+		for (j = 0; j < 3; j++) {
+			switch (val[j]) {
+			case -1: str = "-1"; break;
+			case 0:  str = "0";  break;
+			case 1:  str = "1";  break;
+			default:
+				dev_err(dev, "Invalid value in ACPI mount matrix: %d\n", val[j]);
+				goto out_free_buffer;
+			}
+			orientation->rotation[i * 3 + j] = str;
+		}
+	}
+
+	ret = true;
+
+out_free_buffer:
+	kfree(buffer.pointer);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(iio_read_acpi_mount_matrix);
diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c
index 2fea2bbbe47f..929aff4040ed 100644
--- a/drivers/iio/industrialio-backend.c
+++ b/drivers/iio/industrialio-backend.c
@@ -43,10 +43,12 @@
 #include <linux/types.h>
 
 #include <linux/iio/backend.h>
+#include <linux/iio/iio.h>
 
 struct iio_backend {
 	struct list_head entry;
 	const struct iio_backend_ops *ops;
+	struct device *frontend_dev;
 	struct device *dev;
 	struct module *owner;
 	void *priv;
@@ -113,8 +115,8 @@ static DEFINE_MUTEX(iio_back_lock);
 
 /**
  * iio_backend_chan_enable - Enable a backend channel
- * @back:	Backend device
- * @chan:	Channel number
+ * @back: Backend device
+ * @chan: Channel number
  *
  * RETURNS:
  * 0 on success, negative error number on failure.
@@ -127,8 +129,8 @@ EXPORT_SYMBOL_NS_GPL(iio_backend_chan_enable, IIO_BACKEND);
 
 /**
  * iio_backend_chan_disable - Disable a backend channel
- * @back:	Backend device
- * @chan:	Channel number
+ * @back: Backend device
+ * @chan: Channel number
  *
  * RETURNS:
  * 0 on success, negative error number on failure.
@@ -146,8 +148,8 @@ static void __iio_backend_disable(void *back)
 
 /**
  * devm_iio_backend_enable - Device managed backend enable
- * @dev:	Consumer device for the backend
- * @back:	Backend device
+ * @dev: Consumer device for the backend
+ * @back: Backend device
  *
  * RETURNS:
  * 0 on success, negative error number on failure.
@@ -166,9 +168,9 @@ EXPORT_SYMBOL_NS_GPL(devm_iio_backend_enable, IIO_BACKEND);
 
 /**
  * iio_backend_data_format_set - Configure the channel data format
- * @back:	Backend device
- * @chan:	Channel number
- * @data:	Data format
+ * @back: Backend device
+ * @chan: Channel number
+ * @data: Data format
  *
  * Properly configure a channel with respect to the expected data format. A
  * @struct iio_backend_data_fmt must be passed with the settings.
@@ -186,6 +188,130 @@ int iio_backend_data_format_set(struct iio_backend *back, unsigned int chan,
 }
 EXPORT_SYMBOL_NS_GPL(iio_backend_data_format_set, IIO_BACKEND);
 
+/**
+ * iio_backend_data_source_set - Select data source
+ * @back: Backend device
+ * @chan: Channel number
+ * @data: Data source
+ *
+ * A given backend may have different sources to stream/sync data. This allows
+ * to choose that source.
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int iio_backend_data_source_set(struct iio_backend *back, unsigned int chan,
+				enum iio_backend_data_source data)
+{
+	if (data >= IIO_BACKEND_DATA_SOURCE_MAX)
+		return -EINVAL;
+
+	return iio_backend_op_call(back, data_source_set, chan, data);
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_data_source_set, IIO_BACKEND);
+
+/**
+ * iio_backend_set_sampling_freq - Set channel sampling rate
+ * @back: Backend device
+ * @chan: Channel number
+ * @sample_rate_hz: Sample rate
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int iio_backend_set_sampling_freq(struct iio_backend *back, unsigned int chan,
+				  u64 sample_rate_hz)
+{
+	return iio_backend_op_call(back, set_sample_rate, chan, sample_rate_hz);
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_set_sampling_freq, IIO_BACKEND);
+
+/**
+ * iio_backend_test_pattern_set - Configure a test pattern
+ * @back: Backend device
+ * @chan: Channel number
+ * @pattern: Test pattern
+ *
+ * Configure a test pattern on the backend. This is typically used for
+ * calibrating the timings on the data digital interface.
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int iio_backend_test_pattern_set(struct iio_backend *back,
+				 unsigned int chan,
+				 enum iio_backend_test_pattern pattern)
+{
+	if (pattern >= IIO_BACKEND_TEST_PATTERN_MAX)
+		return -EINVAL;
+
+	return iio_backend_op_call(back, test_pattern_set, chan, pattern);
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_test_pattern_set, IIO_BACKEND);
+
+/**
+ * iio_backend_chan_status - Get the channel status
+ * @back: Backend device
+ * @chan: Channel number
+ * @error: Error indication
+ *
+ * Get the current state of the backend channel. Typically used to check if
+ * there were any errors sending/receiving data.
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int iio_backend_chan_status(struct iio_backend *back, unsigned int chan,
+			    bool *error)
+{
+	return iio_backend_op_call(back, chan_status, chan, error);
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_chan_status, IIO_BACKEND);
+
+/**
+ * iio_backend_iodelay_set - Set digital I/O delay
+ * @back: Backend device
+ * @lane: Lane number
+ * @taps: Number of taps
+ *
+ * Controls delays on sending/receiving data. One usecase for this is to
+ * calibrate the data digital interface so we get the best results when
+ * transferring data. Note that @taps has no unit since the actual delay per tap
+ * is very backend specific. Hence, frontend devices typically should go through
+ * an array of @taps (the size of that array should typically match the size of
+ * calibration points on the frontend device) and call this API.
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int iio_backend_iodelay_set(struct iio_backend *back, unsigned int lane,
+			    unsigned int taps)
+{
+	return iio_backend_op_call(back, iodelay_set, lane, taps);
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_iodelay_set, IIO_BACKEND);
+
+/**
+ * iio_backend_data_sample_trigger - Control when to sample data
+ * @back: Backend device
+ * @trigger: Data trigger
+ *
+ * Mostly useful for input backends. Configures the backend for when to sample
+ * data (eg: rising vs falling edge).
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int iio_backend_data_sample_trigger(struct iio_backend *back,
+				    enum iio_backend_sample_trigger trigger)
+{
+	if (trigger >= IIO_BACKEND_SAMPLE_TRIGGER_MAX)
+		return -EINVAL;
+
+	return iio_backend_op_call(back, data_sample_trigger, trigger);
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_data_sample_trigger, IIO_BACKEND);
+
 static void iio_backend_free_buffer(void *arg)
 {
 	struct iio_backend_buffer_pair *pair = arg;
@@ -195,9 +321,9 @@ static void iio_backend_free_buffer(void *arg)
 
 /**
  * devm_iio_backend_request_buffer - Device managed buffer request
- * @dev:	Consumer device for the backend
- * @back:	Backend device
- * @indio_dev:	IIO device
+ * @dev: Consumer device for the backend
+ * @back: Backend device
+ * @indio_dev: IIO device
  *
  * Request an IIO buffer from the backend. The type of the buffer (typically
  * INDIO_BUFFER_HARDWARE) is up to the backend to decide. This is because,
@@ -231,6 +357,143 @@ int devm_iio_backend_request_buffer(struct device *dev,
 }
 EXPORT_SYMBOL_NS_GPL(devm_iio_backend_request_buffer, IIO_BACKEND);
 
+static struct iio_backend *iio_backend_from_indio_dev_parent(const struct device *dev)
+{
+	struct iio_backend *back = ERR_PTR(-ENODEV), *iter;
+
+	/*
+	 * We deliberately go through all backends even after finding a match.
+	 * The reason is that we want to catch frontend devices which have more
+	 * than one backend in which case returning the first we find is bogus.
+	 * For those cases, frontends need to explicitly define
+	 * get_iio_backend() in struct iio_info.
+	 */
+	guard(mutex)(&iio_back_lock);
+	list_for_each_entry(iter, &iio_back_list, entry) {
+		if (dev == iter->frontend_dev) {
+			if (!IS_ERR(back)) {
+				dev_warn(dev,
+					 "Multiple backends! get_iio_backend() needs to be implemented");
+				return ERR_PTR(-ENODEV);
+			}
+
+			back = iter;
+		}
+	}
+
+	return back;
+}
+
+/**
+ * iio_backend_ext_info_get - IIO ext_info read callback
+ * @indio_dev: IIO device
+ * @private: Data private to the driver
+ * @chan: IIO channel
+ * @buf: Buffer where to place the attribute data
+ *
+ * This helper is intended to be used by backends that extend an IIO channel
+ * (through iio_backend_extend_chan_spec()) with extended info. In that case,
+ * backends are not supposed to give their own callbacks (as they would not have
+ * a way to get the backend from indio_dev). This is the getter.
+ *
+ * RETURNS:
+ * Number of bytes written to buf, negative error number on failure.
+ */
+ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr_t private,
+				 const struct iio_chan_spec *chan, char *buf)
+{
+	struct iio_backend *back;
+
+	/*
+	 * The below should work for the majority of the cases. It will not work
+	 * when one frontend has multiple backends in which case we'll need a
+	 * new callback in struct iio_info so we can directly request the proper
+	 * backend from the frontend. Anyways, let's only introduce new options
+	 * when really needed...
+	 */
+	back = iio_backend_from_indio_dev_parent(indio_dev->dev.parent);
+	if (IS_ERR(back))
+		return PTR_ERR(back);
+
+	return iio_backend_op_call(back, ext_info_get, private, chan, buf);
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_get, IIO_BACKEND);
+
+/**
+ * iio_backend_ext_info_set - IIO ext_info write callback
+ * @indio_dev: IIO device
+ * @private: Data private to the driver
+ * @chan: IIO channel
+ * @buf: Buffer holding the sysfs attribute
+ * @len: Buffer length
+ *
+ * This helper is intended to be used by backends that extend an IIO channel
+ * (trough iio_backend_extend_chan_spec()) with extended info. In that case,
+ * backends are not supposed to give their own callbacks (as they would not have
+ * a way to get the backend from indio_dev). This is the setter.
+ *
+ * RETURNS:
+ * Buffer length on success, negative error number on failure.
+ */
+ssize_t iio_backend_ext_info_set(struct iio_dev *indio_dev, uintptr_t private,
+				 const struct iio_chan_spec *chan,
+				 const char *buf, size_t len)
+{
+	struct iio_backend *back;
+
+	back = iio_backend_from_indio_dev_parent(indio_dev->dev.parent);
+	if (IS_ERR(back))
+		return PTR_ERR(back);
+
+	return iio_backend_op_call(back, ext_info_set, private, chan, buf, len);
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_set, IIO_BACKEND);
+
+/**
+ * iio_backend_extend_chan_spec - Extend an IIO channel
+ * @indio_dev: IIO device
+ * @back: Backend device
+ * @chan: IIO channel
+ *
+ * Some backends may have their own functionalities and hence capable of
+ * extending a frontend's channel.
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int iio_backend_extend_chan_spec(struct iio_dev *indio_dev,
+				 struct iio_backend *back,
+				 struct iio_chan_spec *chan)
+{
+	const struct iio_chan_spec_ext_info *frontend_ext_info = chan->ext_info;
+	const struct iio_chan_spec_ext_info *back_ext_info;
+	int ret;
+
+	ret = iio_backend_op_call(back, extend_chan_spec, chan);
+	if (ret)
+		return ret;
+	/*
+	 * Let's keep things simple for now. Don't allow to overwrite the
+	 * frontend's extended info. If ever needed, we can support appending
+	 * it.
+	 */
+	if (frontend_ext_info && chan->ext_info != frontend_ext_info)
+		return -EOPNOTSUPP;
+	if (!chan->ext_info)
+		return 0;
+
+	/* Don't allow backends to get creative and force their own handlers */
+	for (back_ext_info = chan->ext_info; back_ext_info->name; back_ext_info++) {
+		if (back_ext_info->read != iio_backend_ext_info_get)
+			return -EINVAL;
+		if (back_ext_info->write != iio_backend_ext_info_set)
+			return -EINVAL;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_extend_chan_spec, IIO_BACKEND);
+
 static void iio_backend_release(void *arg)
 {
 	struct iio_backend *back = arg;
@@ -263,6 +526,8 @@ static int __devm_iio_backend_get(struct device *dev, struct iio_backend *back)
 				     "Could not link to supplier(%s)\n",
 				     dev_name(back->dev));
 
+	back->frontend_dev = dev;
+
 	dev_dbg(dev, "Found backend(%s) device\n", dev_name(back->dev));
 
 	return 0;
@@ -270,8 +535,8 @@ static int __devm_iio_backend_get(struct device *dev, struct iio_backend *back)
 
 /**
  * devm_iio_backend_get - Device managed backend device get
- * @dev:	Consumer device for the backend
- * @name:	Backend name
+ * @dev: Consumer device for the backend
+ * @name: Backend name
  *
  * Get's the backend associated with @dev.
  *
@@ -322,8 +587,8 @@ EXPORT_SYMBOL_NS_GPL(devm_iio_backend_get, IIO_BACKEND);
 
 /**
  * __devm_iio_backend_get_from_fwnode_lookup - Device managed fwnode backend device get
- * @dev:	Consumer device for the backend
- * @fwnode:	Firmware node of the backend device
+ * @dev: Consumer device for the backend
+ * @fwnode: Firmware node of the backend device
  *
  * Search the backend list for a device matching @fwnode.
  * This API should not be used and it's only present for preventing the first
@@ -357,7 +622,7 @@ EXPORT_SYMBOL_NS_GPL(__devm_iio_backend_get_from_fwnode_lookup, IIO_BACKEND);
 
 /**
  * iio_backend_get_priv - Get driver private data
- * @back:	Backend device
+ * @back: Backend device
  */
 void *iio_backend_get_priv(const struct iio_backend *back)
 {
@@ -375,9 +640,9 @@ static void iio_backend_unregister(void *arg)
 
 /**
  * devm_iio_backend_register - Device managed backend device register
- * @dev:	Backend device being registered
- * @ops:	Backend ops
- * @priv:	Device private data
+ * @dev: Backend device being registered
+ * @ops: Backend ops
+ * @priv: Device private data
  *
  * @ops is mandatory. Not providing it results in -EINVAL.
  *
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index b581a7e80566..cec58a604d73 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -10,6 +10,7 @@
  * - Alternative access techniques?
  */
 #include <linux/anon_inodes.h>
+#include <linux/cleanup.h>
 #include <linux/kernel.h>
 #include <linux/export.h>
 #include <linux/device.h>
@@ -533,28 +534,26 @@ static ssize_t iio_scan_el_store(struct device *dev,
 	ret = kstrtobool(buf, &state);
 	if (ret < 0)
 		return ret;
-	mutex_lock(&iio_dev_opaque->mlock);
-	if (iio_buffer_is_active(buffer)) {
-		ret = -EBUSY;
-		goto error_ret;
-	}
+
+	guard(mutex)(&iio_dev_opaque->mlock);
+	if (iio_buffer_is_active(buffer))
+		return -EBUSY;
+
 	ret = iio_scan_mask_query(indio_dev, buffer, this_attr->address);
 	if (ret < 0)
-		goto error_ret;
-	if (!state && ret) {
-		ret = iio_scan_mask_clear(buffer, this_attr->address);
-		if (ret)
-			goto error_ret;
-	} else if (state && !ret) {
-		ret = iio_scan_mask_set(indio_dev, buffer, this_attr->address);
-		if (ret)
-			goto error_ret;
-	}
+		return ret;
 
-error_ret:
-	mutex_unlock(&iio_dev_opaque->mlock);
+	if (state && ret)
+		return len;
 
-	return ret < 0 ? ret : len;
+	if (state)
+		ret = iio_scan_mask_set(indio_dev, buffer, this_attr->address);
+	else
+		ret = iio_scan_mask_clear(buffer, this_attr->address);
+	if (ret)
+		return ret;
+
+	return len;
 }
 
 static ssize_t iio_scan_el_ts_show(struct device *dev,
@@ -581,16 +580,13 @@ static ssize_t iio_scan_el_ts_store(struct device *dev,
 	if (ret < 0)
 		return ret;
 
-	mutex_lock(&iio_dev_opaque->mlock);
-	if (iio_buffer_is_active(buffer)) {
-		ret = -EBUSY;
-		goto error_ret;
-	}
+	guard(mutex)(&iio_dev_opaque->mlock);
+	if (iio_buffer_is_active(buffer))
+		return -EBUSY;
+
 	buffer->scan_timestamp = state;
-error_ret:
-	mutex_unlock(&iio_dev_opaque->mlock);
 
-	return ret ? ret : len;
+	return len;
 }
 
 static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
@@ -674,21 +670,16 @@ static ssize_t length_store(struct device *dev, struct device_attribute *attr,
 	if (val == buffer->length)
 		return len;
 
-	mutex_lock(&iio_dev_opaque->mlock);
-	if (iio_buffer_is_active(buffer)) {
-		ret = -EBUSY;
-	} else {
-		buffer->access->set_length(buffer, val);
-		ret = 0;
-	}
-	if (ret)
-		goto out;
+	guard(mutex)(&iio_dev_opaque->mlock);
+	if (iio_buffer_is_active(buffer))
+		return -EBUSY;
+
+	buffer->access->set_length(buffer, val);
+
 	if (buffer->length && buffer->length < buffer->watermark)
 		buffer->watermark = buffer->length;
-out:
-	mutex_unlock(&iio_dev_opaque->mlock);
 
-	return ret ? ret : len;
+	return len;
 }
 
 static ssize_t enable_show(struct device *dev, struct device_attribute *attr,
@@ -1268,7 +1259,6 @@ int iio_update_buffers(struct iio_dev *indio_dev,
 		       struct iio_buffer *remove_buffer)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
-	int ret;
 
 	if (insert_buffer == remove_buffer)
 		return 0;
@@ -1277,8 +1267,8 @@ int iio_update_buffers(struct iio_dev *indio_dev,
 	    insert_buffer->direction == IIO_BUFFER_DIRECTION_OUT)
 		return -EINVAL;
 
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	mutex_lock(&iio_dev_opaque->mlock);
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
+	guard(mutex)(&iio_dev_opaque->mlock);
 
 	if (insert_buffer && iio_buffer_is_active(insert_buffer))
 		insert_buffer = NULL;
@@ -1286,23 +1276,13 @@ int iio_update_buffers(struct iio_dev *indio_dev,
 	if (remove_buffer && !iio_buffer_is_active(remove_buffer))
 		remove_buffer = NULL;
 
-	if (!insert_buffer && !remove_buffer) {
-		ret = 0;
-		goto out_unlock;
-	}
-
-	if (!indio_dev->info) {
-		ret = -ENODEV;
-		goto out_unlock;
-	}
-
-	ret = __iio_update_buffers(indio_dev, insert_buffer, remove_buffer);
+	if (!insert_buffer && !remove_buffer)
+		return 0;
 
-out_unlock:
-	mutex_unlock(&iio_dev_opaque->mlock);
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
+	if (!indio_dev->info)
+		return -ENODEV;
 
-	return ret;
+	return __iio_update_buffers(indio_dev, insert_buffer, remove_buffer);
 }
 EXPORT_SYMBOL_GPL(iio_update_buffers);
 
@@ -1326,22 +1306,22 @@ static ssize_t enable_store(struct device *dev, struct device_attribute *attr,
 	if (ret < 0)
 		return ret;
 
-	mutex_lock(&iio_dev_opaque->mlock);
+	guard(mutex)(&iio_dev_opaque->mlock);
 
 	/* Find out if it is in the list */
 	inlist = iio_buffer_is_active(buffer);
 	/* Already in desired state */
 	if (inlist == requested_state)
-		goto done;
+		return len;
 
 	if (requested_state)
 		ret = __iio_update_buffers(indio_dev, buffer, NULL);
 	else
 		ret = __iio_update_buffers(indio_dev, NULL, buffer);
+	if (ret)
+		return ret;
 
-done:
-	mutex_unlock(&iio_dev_opaque->mlock);
-	return (ret < 0) ? ret : len;
+	return len;
 }
 
 static ssize_t watermark_show(struct device *dev, struct device_attribute *attr,
@@ -1368,23 +1348,17 @@ static ssize_t watermark_store(struct device *dev,
 	if (!val)
 		return -EINVAL;
 
-	mutex_lock(&iio_dev_opaque->mlock);
+	guard(mutex)(&iio_dev_opaque->mlock);
 
-	if (val > buffer->length) {
-		ret = -EINVAL;
-		goto out;
-	}
+	if (val > buffer->length)
+		return -EINVAL;
 
-	if (iio_buffer_is_active(buffer)) {
-		ret = -EBUSY;
-		goto out;
-	}
+	if (iio_buffer_is_active(buffer))
+		return -EBUSY;
 
 	buffer->watermark = val;
-out:
-	mutex_unlock(&iio_dev_opaque->mlock);
 
-	return ret ? ret : len;
+	return len;
 }
 
 static ssize_t data_available_show(struct device *dev,
@@ -1770,7 +1744,7 @@ int iio_buffers_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
 
 	channels = indio_dev->channels;
 	if (channels) {
-		int ml = indio_dev->masklength;
+		int ml = 0;
 
 		for (i = 0; i < indio_dev->num_channels; i++)
 			ml = max(ml, channels[i].scan_index + 1);
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 4302093b92c7..fa7cc051b4c4 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -11,6 +11,7 @@
 
 #include <linux/anon_inodes.h>
 #include <linux/cdev.h>
+#include <linux/cleanup.h>
 #include <linux/debugfs.h>
 #include <linux/device.h>
 #include <linux/err.h>
@@ -1643,19 +1644,20 @@ struct iio_dev *iio_device_alloc(struct device *parent, int sizeof_priv)
 	struct iio_dev *indio_dev;
 	size_t alloc_size;
 
-	alloc_size = sizeof(struct iio_dev_opaque);
-	if (sizeof_priv) {
-		alloc_size = ALIGN(alloc_size, IIO_DMA_MINALIGN);
-		alloc_size += sizeof_priv;
-	}
+	if (sizeof_priv)
+		alloc_size = ALIGN(sizeof(*iio_dev_opaque), IIO_DMA_MINALIGN) + sizeof_priv;
+	else
+		alloc_size = sizeof(*iio_dev_opaque);
 
 	iio_dev_opaque = kzalloc(alloc_size, GFP_KERNEL);
 	if (!iio_dev_opaque)
 		return NULL;
 
 	indio_dev = &iio_dev_opaque->indio_dev;
-	indio_dev->priv = (char *)iio_dev_opaque +
-		ALIGN(sizeof(struct iio_dev_opaque), IIO_DMA_MINALIGN);
+
+	if (sizeof_priv)
+		indio_dev->priv = (char *)iio_dev_opaque +
+			ALIGN(sizeof(*iio_dev_opaque), IIO_DMA_MINALIGN);
 
 	indio_dev->dev.parent = parent;
 	indio_dev->dev.type = &iio_device_type;
@@ -1809,31 +1811,24 @@ static long iio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	struct iio_dev *indio_dev = ib->indio_dev;
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	struct iio_ioctl_handler *h;
-	int ret = -ENODEV;
-
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
+	int ret;
 
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
 	/*
 	 * The NULL check here is required to prevent crashing when a device
 	 * is being removed while userspace would still have open file handles
 	 * to try to access this device.
 	 */
 	if (!indio_dev->info)
-		goto out_unlock;
+		return -ENODEV;
 
 	list_for_each_entry(h, &iio_dev_opaque->ioctl_handlers, entry) {
 		ret = h->ioctl(indio_dev, filp, cmd, arg);
 		if (ret != IIO_IOCTL_UNHANDLED)
-			break;
+			return ret;
 	}
 
-	if (ret == IIO_IOCTL_UNHANDLED)
-		ret = -ENODEV;
-
-out_unlock:
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
-
-	return ret;
+	return -ENODEV;
 }
 
 static const struct file_operations iio_buffer_fileops = {
@@ -2061,18 +2056,16 @@ void iio_device_unregister(struct iio_dev *indio_dev)
 
 	cdev_device_del(&iio_dev_opaque->chrdev, &indio_dev->dev);
 
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
+	scoped_guard(mutex, &iio_dev_opaque->info_exist_lock) {
+		iio_device_unregister_debugfs(indio_dev);
 
-	iio_device_unregister_debugfs(indio_dev);
+		iio_disable_all_buffers(indio_dev);
 
-	iio_disable_all_buffers(indio_dev);
+		indio_dev->info = NULL;
 
-	indio_dev->info = NULL;
-
-	iio_device_wakeup_eventset(indio_dev);
-	iio_buffer_wakeup_poll(indio_dev);
-
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
+		iio_device_wakeup_eventset(indio_dev);
+		iio_buffer_wakeup_poll(indio_dev);
+	}
 
 	iio_buffers_free_sysfs_and_mask(indio_dev);
 }
diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index 18f83158f637..16de57846bd9 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -4,6 +4,7 @@
  * Copyright (c) 2008 Jonathan Cameron
  */
 
+#include <linux/cleanup.h>
 #include <linux/kernel.h>
 #include <linux/idr.h>
 #include <linux/err.h>
@@ -80,19 +81,18 @@ int iio_trigger_register(struct iio_trigger *trig_info)
 		goto error_unregister_id;
 
 	/* Add to list of available triggers held by the IIO core */
-	mutex_lock(&iio_trigger_list_lock);
-	if (__iio_trigger_find_by_name(trig_info->name)) {
-		pr_err("Duplicate trigger name '%s'\n", trig_info->name);
-		ret = -EEXIST;
-		goto error_device_del;
+	scoped_guard(mutex, &iio_trigger_list_lock) {
+		if (__iio_trigger_find_by_name(trig_info->name)) {
+			pr_err("Duplicate trigger name '%s'\n", trig_info->name);
+			ret = -EEXIST;
+			goto error_device_del;
+		}
+		list_add_tail(&trig_info->list, &iio_trigger_list);
 	}
-	list_add_tail(&trig_info->list, &iio_trigger_list);
-	mutex_unlock(&iio_trigger_list_lock);
 
 	return 0;
 
 error_device_del:
-	mutex_unlock(&iio_trigger_list_lock);
 	device_del(&trig_info->dev);
 error_unregister_id:
 	ida_free(&iio_trigger_ida, trig_info->id);
@@ -102,9 +102,8 @@ EXPORT_SYMBOL(iio_trigger_register);
 
 void iio_trigger_unregister(struct iio_trigger *trig_info)
 {
-	mutex_lock(&iio_trigger_list_lock);
-	list_del(&trig_info->list);
-	mutex_unlock(&iio_trigger_list_lock);
+	scoped_guard(mutex, &iio_trigger_list_lock)
+		list_del(&trig_info->list);
 
 	ida_free(&iio_trigger_ida, trig_info->id);
 	/* Possible issue in here */
@@ -120,12 +119,11 @@ int iio_trigger_set_immutable(struct iio_dev *indio_dev, struct iio_trigger *tri
 		return -EINVAL;
 
 	iio_dev_opaque = to_iio_dev_opaque(indio_dev);
-	mutex_lock(&iio_dev_opaque->mlock);
+	guard(mutex)(&iio_dev_opaque->mlock);
 	WARN_ON(iio_dev_opaque->trig_readonly);
 
 	indio_dev->trig = iio_trigger_get(trig);
 	iio_dev_opaque->trig_readonly = true;
-	mutex_unlock(&iio_dev_opaque->mlock);
 
 	return 0;
 }
@@ -145,18 +143,14 @@ static struct iio_trigger *__iio_trigger_find_by_name(const char *name)
 
 static struct iio_trigger *iio_trigger_acquire_by_name(const char *name)
 {
-	struct iio_trigger *trig = NULL, *iter;
+	struct iio_trigger *iter;
 
-	mutex_lock(&iio_trigger_list_lock);
+	guard(mutex)(&iio_trigger_list_lock);
 	list_for_each_entry(iter, &iio_trigger_list, list)
-		if (sysfs_streq(iter->name, name)) {
-			trig = iter;
-			iio_trigger_get(trig);
-			break;
-		}
-	mutex_unlock(&iio_trigger_list_lock);
+		if (sysfs_streq(iter->name, name))
+			return iio_trigger_get(iter);
 
-	return trig;
+	return NULL;
 }
 
 static void iio_reenable_work_fn(struct work_struct *work)
@@ -259,22 +253,21 @@ static int iio_trigger_get_irq(struct iio_trigger *trig)
 {
 	int ret;
 
-	mutex_lock(&trig->pool_lock);
-	ret = bitmap_find_free_region(trig->pool,
-				      CONFIG_IIO_CONSUMERS_PER_TRIGGER,
-				      ilog2(1));
-	mutex_unlock(&trig->pool_lock);
-	if (ret >= 0)
-		ret += trig->subirq_base;
+	scoped_guard(mutex, &trig->pool_lock) {
+		ret = bitmap_find_free_region(trig->pool,
+					      CONFIG_IIO_CONSUMERS_PER_TRIGGER,
+					      ilog2(1));
+		if (ret < 0)
+			return ret;
+	}
 
-	return ret;
+	return ret + trig->subirq_base;
 }
 
 static void iio_trigger_put_irq(struct iio_trigger *trig, int irq)
 {
-	mutex_lock(&trig->pool_lock);
+	guard(mutex)(&trig->pool_lock);
 	clear_bit(irq - trig->subirq_base, trig->pool);
-	mutex_unlock(&trig->pool_lock);
 }
 
 /* Complexity in here.  With certain triggers (datardy) an acknowledgement
@@ -451,16 +444,12 @@ static ssize_t current_trigger_store(struct device *dev,
 	struct iio_trigger *trig;
 	int ret;
 
-	mutex_lock(&iio_dev_opaque->mlock);
-	if (iio_dev_opaque->currentmode == INDIO_BUFFER_TRIGGERED) {
-		mutex_unlock(&iio_dev_opaque->mlock);
-		return -EBUSY;
-	}
-	if (iio_dev_opaque->trig_readonly) {
-		mutex_unlock(&iio_dev_opaque->mlock);
-		return -EPERM;
+	scoped_guard(mutex, &iio_dev_opaque->mlock) {
+		if (iio_dev_opaque->currentmode == INDIO_BUFFER_TRIGGERED)
+			return -EBUSY;
+		if (iio_dev_opaque->trig_readonly)
+			return -EPERM;
 	}
-	mutex_unlock(&iio_dev_opaque->mlock);
 
 	trig = iio_trigger_acquire_by_name(buf);
 	if (oldtrig == trig) {
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 7a1f6713318a..52d773261828 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -3,6 +3,7 @@
  *
  * Copyright (c) 2011 Jonathan Cameron
  */
+#include <linux/cleanup.h>
 #include <linux/err.h>
 #include <linux/export.h>
 #include <linux/minmax.h>
@@ -43,13 +44,14 @@ static int iio_map_array_unregister_locked(struct iio_dev *indio_dev)
 
 int iio_map_array_register(struct iio_dev *indio_dev, struct iio_map *maps)
 {
-	int i = 0, ret = 0;
 	struct iio_map_internal *mapi;
+	int i = 0;
+	int ret;
 
 	if (!maps)
 		return 0;
 
-	mutex_lock(&iio_map_list_lock);
+	guard(mutex)(&iio_map_list_lock);
 	while (maps[i].consumer_dev_name) {
 		mapi = kzalloc(sizeof(*mapi), GFP_KERNEL);
 		if (!mapi) {
@@ -61,11 +63,10 @@ int iio_map_array_register(struct iio_dev *indio_dev, struct iio_map *maps)
 		list_add_tail(&mapi->l, &iio_map_list);
 		i++;
 	}
-error_ret:
-	if (ret)
-		iio_map_array_unregister_locked(indio_dev);
-	mutex_unlock(&iio_map_list_lock);
 
+	return 0;
+error_ret:
+	iio_map_array_unregister_locked(indio_dev);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(iio_map_array_register);
@@ -75,13 +76,8 @@ EXPORT_SYMBOL_GPL(iio_map_array_register);
  */
 int iio_map_array_unregister(struct iio_dev *indio_dev)
 {
-	int ret;
-
-	mutex_lock(&iio_map_list_lock);
-	ret = iio_map_array_unregister_locked(indio_dev);
-	mutex_unlock(&iio_map_list_lock);
-
-	return ret;
+	guard(mutex)(&iio_map_list_lock);
+	return iio_map_array_unregister_locked(indio_dev);
 }
 EXPORT_SYMBOL_GPL(iio_map_array_unregister);
 
@@ -183,25 +179,21 @@ err_put:
 static struct iio_channel *fwnode_iio_channel_get(struct fwnode_handle *fwnode,
 						  int index)
 {
-	struct iio_channel *channel;
 	int err;
 
 	if (index < 0)
 		return ERR_PTR(-EINVAL);
 
-	channel = kzalloc(sizeof(*channel), GFP_KERNEL);
+	struct iio_channel *channel __free(kfree) =
+		kzalloc(sizeof(*channel), GFP_KERNEL);
 	if (!channel)
 		return ERR_PTR(-ENOMEM);
 
 	err = __fwnode_iio_channel_get(channel, fwnode, index);
 	if (err)
-		goto err_free_channel;
+		return ERR_PTR(err);
 
-	return channel;
-
-err_free_channel:
-	kfree(channel);
-	return ERR_PTR(err);
+	return_ptr(channel);
 }
 
 static struct iio_channel *
@@ -291,7 +283,6 @@ EXPORT_SYMBOL_GPL(fwnode_iio_channel_get_by_name);
 static struct iio_channel *fwnode_iio_channel_get_all(struct device *dev)
 {
 	struct fwnode_handle *fwnode = dev_fwnode(dev);
-	struct iio_channel *chans;
 	int i, mapind, nummaps = 0;
 	int ret;
 
@@ -307,7 +298,8 @@ static struct iio_channel *fwnode_iio_channel_get_all(struct device *dev)
 		return ERR_PTR(-ENODEV);
 
 	/* NULL terminated array to save passing size */
-	chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
+	struct iio_channel *chans __free(kfree) =
+		kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
 	if (!chans)
 		return ERR_PTR(-ENOMEM);
 
@@ -317,12 +309,11 @@ static struct iio_channel *fwnode_iio_channel_get_all(struct device *dev)
 		if (ret)
 			goto error_free_chans;
 	}
-	return chans;
+	return_ptr(chans);
 
 error_free_chans:
 	for (i = 0; i < mapind; i++)
 		iio_device_put(chans[i].indio_dev);
-	kfree(chans);
 	return ERR_PTR(ret);
 }
 
@@ -330,28 +321,28 @@ static struct iio_channel *iio_channel_get_sys(const char *name,
 					       const char *channel_name)
 {
 	struct iio_map_internal *c_i = NULL, *c = NULL;
-	struct iio_channel *channel;
 	int err;
 
 	if (!(name || channel_name))
 		return ERR_PTR(-ENODEV);
 
 	/* first find matching entry the channel map */
-	mutex_lock(&iio_map_list_lock);
-	list_for_each_entry(c_i, &iio_map_list, l) {
-		if ((name && strcmp(name, c_i->map->consumer_dev_name) != 0) ||
-		    (channel_name &&
-		     strcmp(channel_name, c_i->map->consumer_channel) != 0))
-			continue;
-		c = c_i;
-		iio_device_get(c->indio_dev);
-		break;
+	scoped_guard(mutex, &iio_map_list_lock) {
+		list_for_each_entry(c_i, &iio_map_list, l) {
+			if ((name && strcmp(name, c_i->map->consumer_dev_name) != 0) ||
+			    (channel_name &&
+			     strcmp(channel_name, c_i->map->consumer_channel) != 0))
+				continue;
+			c = c_i;
+			iio_device_get(c->indio_dev);
+			break;
+		}
 	}
-	mutex_unlock(&iio_map_list_lock);
 	if (!c)
 		return ERR_PTR(-ENODEV);
 
-	channel = kzalloc(sizeof(*channel), GFP_KERNEL);
+	struct iio_channel *channel __free(kfree) =
+		kzalloc(sizeof(*channel), GFP_KERNEL);
 	if (!channel) {
 		err = -ENOMEM;
 		goto error_no_mem;
@@ -366,14 +357,12 @@ static struct iio_channel *iio_channel_get_sys(const char *name,
 
 		if (!channel->channel) {
 			err = -EINVAL;
-			goto error_no_chan;
+			goto error_no_mem;
 		}
 	}
 
-	return channel;
+	return_ptr(channel);
 
-error_no_chan:
-	kfree(channel);
 error_no_mem:
 	iio_device_put(c->indio_dev);
 	return ERR_PTR(err);
@@ -450,8 +439,8 @@ EXPORT_SYMBOL_GPL(devm_fwnode_iio_channel_get_by_name);
 struct iio_channel *iio_channel_get_all(struct device *dev)
 {
 	const char *name;
-	struct iio_channel *chans;
 	struct iio_map_internal *c = NULL;
+	struct iio_channel *fw_chans;
 	int nummaps = 0;
 	int mapind = 0;
 	int i, ret;
@@ -459,17 +448,17 @@ struct iio_channel *iio_channel_get_all(struct device *dev)
 	if (!dev)
 		return ERR_PTR(-EINVAL);
 
-	chans = fwnode_iio_channel_get_all(dev);
+	fw_chans = fwnode_iio_channel_get_all(dev);
 	/*
 	 * We only want to carry on if the error is -ENODEV.  Anything else
 	 * should be reported up the stack.
 	 */
-	if (!IS_ERR(chans) || PTR_ERR(chans) != -ENODEV)
-		return chans;
+	if (!IS_ERR(fw_chans) || PTR_ERR(fw_chans) != -ENODEV)
+		return fw_chans;
 
 	name = dev_name(dev);
 
-	mutex_lock(&iio_map_list_lock);
+	guard(mutex)(&iio_map_list_lock);
 	/* first count the matching maps */
 	list_for_each_entry(c, &iio_map_list, l)
 		if (name && strcmp(name, c->map->consumer_dev_name) != 0)
@@ -477,17 +466,14 @@ struct iio_channel *iio_channel_get_all(struct device *dev)
 		else
 			nummaps++;
 
-	if (nummaps == 0) {
-		ret = -ENODEV;
-		goto error_ret;
-	}
+	if (nummaps == 0)
+		return ERR_PTR(-ENODEV);
 
 	/* NULL terminated array to save passing size */
-	chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
-	if (!chans) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
+	struct iio_channel *chans __free(kfree) =
+		kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
+	if (!chans)
+		return ERR_PTR(-ENOMEM);
 
 	/* for each map fill in the chans element */
 	list_for_each_entry(c, &iio_map_list, l) {
@@ -509,17 +495,12 @@ struct iio_channel *iio_channel_get_all(struct device *dev)
 		ret = -ENODEV;
 		goto error_free_chans;
 	}
-	mutex_unlock(&iio_map_list_lock);
 
-	return chans;
+	return_ptr(chans);
 
 error_free_chans:
 	for (i = 0; i < nummaps; i++)
 		iio_device_put(chans[i].indio_dev);
-	kfree(chans);
-error_ret:
-	mutex_unlock(&iio_map_list_lock);
-
 	return ERR_PTR(ret);
 }
 EXPORT_SYMBOL_GPL(iio_channel_get_all);
@@ -590,38 +571,24 @@ static int iio_channel_read(struct iio_channel *chan, int *val, int *val2,
 int iio_read_channel_raw(struct iio_channel *chan, int *val)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
-	int ret;
 
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (!chan->indio_dev->info) {
-		ret = -ENODEV;
-		goto err_unlock;
-	}
-
-	ret = iio_channel_read(chan, val, NULL, IIO_CHAN_INFO_RAW);
-err_unlock:
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info)
+		return -ENODEV;
 
-	return ret;
+	return iio_channel_read(chan, val, NULL, IIO_CHAN_INFO_RAW);
 }
 EXPORT_SYMBOL_GPL(iio_read_channel_raw);
 
 int iio_read_channel_average_raw(struct iio_channel *chan, int *val)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
-	int ret;
 
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (!chan->indio_dev->info) {
-		ret = -ENODEV;
-		goto err_unlock;
-	}
-
-	ret = iio_channel_read(chan, val, NULL, IIO_CHAN_INFO_AVERAGE_RAW);
-err_unlock:
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info)
+		return -ENODEV;
 
-	return ret;
+	return iio_channel_read(chan, val, NULL, IIO_CHAN_INFO_AVERAGE_RAW);
 }
 EXPORT_SYMBOL_GPL(iio_read_channel_average_raw);
 
@@ -708,20 +675,13 @@ int iio_convert_raw_to_processed(struct iio_channel *chan, int raw,
 				 int *processed, unsigned int scale)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
-	int ret;
 
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (!chan->indio_dev->info) {
-		ret = -ENODEV;
-		goto err_unlock;
-	}
-
-	ret = iio_convert_raw_to_processed_unlocked(chan, raw, processed,
-						    scale);
-err_unlock:
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info)
+		return -ENODEV;
 
-	return ret;
+	return iio_convert_raw_to_processed_unlocked(chan, raw, processed,
+						     scale);
 }
 EXPORT_SYMBOL_GPL(iio_convert_raw_to_processed);
 
@@ -729,19 +689,12 @@ int iio_read_channel_attribute(struct iio_channel *chan, int *val, int *val2,
 			       enum iio_chan_info_enum attribute)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
-	int ret;
 
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (!chan->indio_dev->info) {
-		ret = -ENODEV;
-		goto err_unlock;
-	}
-
-	ret = iio_channel_read(chan, val, val2, attribute);
-err_unlock:
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info)
+		return -ENODEV;
 
-	return ret;
+	return iio_channel_read(chan, val, val2, attribute);
 }
 EXPORT_SYMBOL_GPL(iio_read_channel_attribute);
 
@@ -757,30 +710,26 @@ int iio_read_channel_processed_scale(struct iio_channel *chan, int *val,
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret;
 
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (!chan->indio_dev->info) {
-		ret = -ENODEV;
-		goto err_unlock;
-	}
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info)
+		return -ENODEV;
 
 	if (iio_channel_has_info(chan->channel, IIO_CHAN_INFO_PROCESSED)) {
 		ret = iio_channel_read(chan, val, NULL,
 				       IIO_CHAN_INFO_PROCESSED);
 		if (ret < 0)
-			goto err_unlock;
+			return ret;
 		*val *= scale;
+
+		return 0;
 	} else {
 		ret = iio_channel_read(chan, val, NULL, IIO_CHAN_INFO_RAW);
 		if (ret < 0)
-			goto err_unlock;
-		ret = iio_convert_raw_to_processed_unlocked(chan, *val, val,
-							    scale);
-	}
+			return ret;
 
-err_unlock:
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
-
-	return ret;
+		return iio_convert_raw_to_processed_unlocked(chan, *val, val,
+							     scale);
+	}
 }
 EXPORT_SYMBOL_GPL(iio_read_channel_processed_scale);
 
@@ -813,19 +762,12 @@ int iio_read_avail_channel_attribute(struct iio_channel *chan,
 				     enum iio_chan_info_enum attribute)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
-	int ret;
-
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (!chan->indio_dev->info) {
-		ret = -ENODEV;
-		goto err_unlock;
-	}
 
-	ret = iio_channel_read_avail(chan, vals, type, length, attribute);
-err_unlock:
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info)
+		return -ENODEV;
 
-	return ret;
+	return iio_channel_read_avail(chan, vals, type, length, attribute);
 }
 EXPORT_SYMBOL_GPL(iio_read_avail_channel_attribute);
 
@@ -892,20 +834,13 @@ static int iio_channel_read_max(struct iio_channel *chan,
 int iio_read_max_channel_raw(struct iio_channel *chan, int *val)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
-	int ret;
 	int type;
 
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (!chan->indio_dev->info) {
-		ret = -ENODEV;
-		goto err_unlock;
-	}
-
-	ret = iio_channel_read_max(chan, val, NULL, &type, IIO_CHAN_INFO_RAW);
-err_unlock:
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info)
+		return -ENODEV;
 
-	return ret;
+	return iio_channel_read_max(chan, val, NULL, &type, IIO_CHAN_INFO_RAW);
 }
 EXPORT_SYMBOL_GPL(iio_read_max_channel_raw);
 
@@ -955,40 +890,27 @@ static int iio_channel_read_min(struct iio_channel *chan,
 int iio_read_min_channel_raw(struct iio_channel *chan, int *val)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
-	int ret;
 	int type;
 
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (!chan->indio_dev->info) {
-		ret = -ENODEV;
-		goto err_unlock;
-	}
-
-	ret = iio_channel_read_min(chan, val, NULL, &type, IIO_CHAN_INFO_RAW);
-err_unlock:
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info)
+		return -ENODEV;
 
-	return ret;
+	return iio_channel_read_min(chan, val, NULL, &type, IIO_CHAN_INFO_RAW);
 }
 EXPORT_SYMBOL_GPL(iio_read_min_channel_raw);
 
 int iio_get_channel_type(struct iio_channel *chan, enum iio_chan_type *type)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
-	int ret = 0;
-	/* Need to verify underlying driver has not gone away */
 
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (!chan->indio_dev->info) {
-		ret = -ENODEV;
-		goto err_unlock;
-	}
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info)
+		return -ENODEV;
 
 	*type = chan->channel->type;
-err_unlock:
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(iio_get_channel_type);
 
@@ -1003,19 +925,12 @@ int iio_write_channel_attribute(struct iio_channel *chan, int val, int val2,
 				enum iio_chan_info_enum attribute)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
-	int ret;
 
-	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (!chan->indio_dev->info) {
-		ret = -ENODEV;
-		goto err_unlock;
-	}
+	guard(mutex)(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info)
+		return -ENODEV;
 
-	ret = iio_channel_write(chan, val, val2, attribute);
-err_unlock:
-	mutex_unlock(&iio_dev_opaque->info_exist_lock);
-
-	return ret;
+	return iio_channel_write(chan, val, val2, attribute);
 }
 EXPORT_SYMBOL_GPL(iio_write_channel_attribute);
 
diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig
index fd5a9879a582..9a587d403118 100644
--- a/drivers/iio/light/Kconfig
+++ b/drivers/iio/light/Kconfig
@@ -73,6 +73,18 @@ config APDS9300
 	  To compile this driver as a module, choose M here: the
 	  module will be called apds9300.
 
+config APDS9306
+	tristate "Avago APDS9306 Ambient Light Sensor"
+	depends on I2C
+	select REGMAP_I2C
+	select IIO_GTS_HELPER
+	help
+	  If you say Y or M here, you get support for Avago APDS9306
+	  Ambient Light Sensor.
+
+	  If built as a dynamically linked module, it will be called
+	  apds9306.
+
 config APDS9960
 	tristate "Avago APDS9960 gesture/RGB/ALS/proximity sensor"
 	select REGMAP_I2C
diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile
index 2e5fdb33e0e9..a30f906e91ba 100644
--- a/drivers/iio/light/Makefile
+++ b/drivers/iio/light/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_ADUX1020)		+= adux1020.o
 obj-$(CONFIG_AL3010)		+= al3010.o
 obj-$(CONFIG_AL3320A)		+= al3320a.o
 obj-$(CONFIG_APDS9300)		+= apds9300.o
+obj-$(CONFIG_APDS9306)		+= apds9306.o
 obj-$(CONFIG_APDS9960)		+= apds9960.o
 obj-$(CONFIG_AS73211)		+= as73211.o
 obj-$(CONFIG_BH1750)		+= bh1750.o
diff --git a/drivers/iio/light/apds9306.c b/drivers/iio/light/apds9306.c
new file mode 100644
index 000000000000..d6627b3e6000
--- /dev/null
+++ b/drivers/iio/light/apds9306.c
@@ -0,0 +1,1361 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * APDS-9306/APDS-9306-065 Ambient Light Sensor
+ * I2C Address: 0x52
+ * Datasheet: https://docs.broadcom.com/doc/AV02-4755EN
+ *
+ * Copyright (C) 2024 Subhajit Ghosh <subhajit.ghosh@tweaklogic.com>
+ */
+
+#include <linux/bits.h>
+#include <linux/cleanup.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/minmax.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/types.h>
+#include <linux/units.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/iio-gts-helper.h>
+#include <linux/iio/events.h>
+#include <linux/iio/sysfs.h>
+
+#include <asm/unaligned.h>
+
+#define APDS9306_MAIN_CTRL_REG		0x00
+#define APDS9306_ALS_MEAS_RATE_REG	0x04
+#define APDS9306_ALS_GAIN_REG		0x05
+#define APDS9306_PART_ID_REG		0x06
+#define APDS9306_MAIN_STATUS_REG	0x07
+#define APDS9306_CLEAR_DATA_0_REG	0x0A
+#define APDS9306_CLEAR_DATA_1_REG	0x0B
+#define APDS9306_CLEAR_DATA_2_REG	0x0C
+#define APDS9306_ALS_DATA_0_REG		0x0D
+#define APDS9306_ALS_DATA_1_REG		0x0E
+#define APDS9306_ALS_DATA_2_REG		0x0F
+#define APDS9306_INT_CFG_REG		0x19
+#define APDS9306_INT_PERSISTENCE_REG	0x1A
+#define APDS9306_ALS_THRES_UP_0_REG	0x21
+#define APDS9306_ALS_THRES_UP_1_REG	0x22
+#define APDS9306_ALS_THRES_UP_2_REG	0x23
+#define APDS9306_ALS_THRES_LOW_0_REG	0x24
+#define APDS9306_ALS_THRES_LOW_1_REG	0x25
+#define APDS9306_ALS_THRES_LOW_2_REG	0x26
+#define APDS9306_ALS_THRES_VAR_REG	0x27
+
+#define APDS9306_ALS_INT_STAT_MASK	BIT(4)
+#define APDS9306_ALS_DATA_STAT_MASK	BIT(3)
+
+#define APDS9306_ALS_THRES_VAL_MAX	(BIT(20) - 1)
+#define APDS9306_ALS_THRES_VAR_NUM_VALS	8
+#define APDS9306_ALS_PERSIST_NUM_VALS	16
+#define APDS9306_ALS_READ_DATA_DELAY_US	(20 * USEC_PER_MSEC)
+#define APDS9306_NUM_REPEAT_RATES	7
+#define APDS9306_INT_SRC_CLEAR	0
+#define APDS9306_INT_SRC_ALS	1
+#define APDS9306_SAMP_FREQ_10HZ	0
+
+/**
+ * struct part_id_gts_multiplier - Part no. and corresponding gts multiplier
+ *
+ * GTS (Gain Time Scale) are helper functions for Light sensors which along
+ * with hardware gains also has gains associated with Integration times.
+ *
+ * There are two variants of the device with slightly different characteristics,
+ * they have same ADC count for different Lux levels as mentioned in the
+ * datasheet. This multiplier array is used to store the derived Lux per count
+ * value for the two variants to be used by the GTS helper functions.
+ *
+ * @part_id: Part ID of the device
+ * @max_scale_int: Multiplier for iio_init_iio_gts()
+ * @max_scale_nano: Multiplier for iio_init_iio_gts()
+ */
+struct part_id_gts_multiplier {
+	int part_id;
+	int max_scale_int;
+	int max_scale_nano;
+};
+
+/*
+ * As per the datasheet, at HW Gain = 3x, Integration time 100mS (32x),
+ * typical 2000 ADC counts are observed for 49.8 uW per sq cm (340.134 lux)
+ * for apds9306 and 43 uW per sq cm (293.69 lux) for apds9306-065.
+ * Assuming lux per count is linear across all integration time ranges.
+ *
+ * Lux = (raw + offset) * scale; offset can be any value by userspace.
+ * HG = Hardware Gain; ITG = Gain by changing integration time.
+ * Scale table by IIO GTS Helpers = (1 / HG) * (1 / ITG) * Multiplier.
+ *
+ * The Lux values provided in the datasheet are at ITG=32x and HG=3x,
+ * at typical 2000 count for both variants of the device.
+ *
+ * Lux per ADC count at 3x and 32x for apds9306 = 340.134 / 2000
+ * Lux per ADC count at 3x and 32x for apds9306-065 = 293.69 / 2000
+ *
+ * The Multiplier for the scale table provided to userspace:
+ * IIO GTS scale Multiplier for apds9306 = (340.134 / 2000) * 32 * 3 = 16.326432
+ * and for apds9306-065 = (293.69 / 2000) * 32 * 3 = 14.09712
+ */
+static const struct part_id_gts_multiplier apds9306_gts_mul[] = {
+	{
+		.part_id = 0xB1,
+		.max_scale_int = 16,
+		.max_scale_nano = 3264320,
+	}, {
+		.part_id = 0xB3,
+		.max_scale_int = 14,
+		.max_scale_nano = 9712000,
+	},
+};
+
+static const int apds9306_repeat_rate_freq[APDS9306_NUM_REPEAT_RATES][2] = {
+	{ 40, 0 },
+	{ 20, 0 },
+	{ 10, 0 },
+	{ 5,  0 },
+	{ 2,  0 },
+	{ 1,  0 },
+	{ 0,  500000 },
+};
+
+static const int apds9306_repeat_rate_period[APDS9306_NUM_REPEAT_RATES] = {
+	25000, 50000, 100000, 200000, 500000, 1000000, 2000000,
+};
+
+/**
+ * struct apds9306_regfields - apds9306 regmap fields definitions
+ *
+ * @sw_reset: Software reset regfield
+ * @en: Enable regfield
+ * @intg_time: Resolution regfield
+ * @repeat_rate: Measurement Rate regfield
+ * @gain: Hardware gain regfield
+ * @int_src: Interrupt channel regfield
+ * @int_thresh_var_en: Interrupt variance threshold regfield
+ * @int_en: Interrupt enable regfield
+ * @int_persist_val: Interrupt persistence regfield
+ * @int_thresh_var_val: Interrupt threshold variance value regfield
+ */
+struct apds9306_regfields {
+	struct regmap_field *sw_reset;
+	struct regmap_field *en;
+	struct regmap_field *intg_time;
+	struct regmap_field *repeat_rate;
+	struct regmap_field *gain;
+	struct regmap_field *int_src;
+	struct regmap_field *int_thresh_var_en;
+	struct regmap_field *int_en;
+	struct regmap_field *int_persist_val;
+	struct regmap_field *int_thresh_var_val;
+};
+
+/**
+ * struct apds9306_data - apds9306 private data and registers definitions
+ *
+ * @dev: Pointer to the device structure
+ * @gts: IIO Gain Time Scale structure
+ * @mutex: Lock for protecting adc reads, device settings changes where
+ *         some calculations are required before or after setting or
+ *         getting the raw settings values from regmap writes or reads
+ *         respectively.
+ * @regmap: Regmap structure pointer
+ * @rf: Regmap register fields structure
+ * @nlux_per_count: Nano lux per ADC count for a particular model
+ * @read_data_available: Flag set by IRQ handler for ADC data available
+ */
+struct apds9306_data {
+	struct device *dev;
+	struct iio_gts gts;
+
+	struct mutex mutex;
+
+	struct regmap *regmap;
+	struct apds9306_regfields rf;
+
+	int nlux_per_count;
+	int read_data_available;
+};
+
+/*
+ * Available scales with gain 1x - 18x, timings 3.125, 25, 50, 100, 200, 400 ms
+ * Time impacts to gain: 1x, 8x, 16x, 32x, 64x, 128x
+ */
+#define APDS9306_GSEL_1X	0x00
+#define APDS9306_GSEL_3X	0x01
+#define APDS9306_GSEL_6X	0x02
+#define APDS9306_GSEL_9X	0x03
+#define APDS9306_GSEL_18X	0x04
+
+static const struct iio_gain_sel_pair apds9306_gains[] = {
+	GAIN_SCALE_GAIN(1, APDS9306_GSEL_1X),
+	GAIN_SCALE_GAIN(3, APDS9306_GSEL_3X),
+	GAIN_SCALE_GAIN(6, APDS9306_GSEL_6X),
+	GAIN_SCALE_GAIN(9, APDS9306_GSEL_9X),
+	GAIN_SCALE_GAIN(18, APDS9306_GSEL_18X),
+};
+
+#define APDS9306_MEAS_MODE_400MS	0x00
+#define APDS9306_MEAS_MODE_200MS	0x01
+#define APDS9306_MEAS_MODE_100MS	0x02
+#define APDS9306_MEAS_MODE_50MS		0x03
+#define APDS9306_MEAS_MODE_25MS		0x04
+#define APDS9306_MEAS_MODE_3125US	0x05
+
+static const struct iio_itime_sel_mul apds9306_itimes[] = {
+	GAIN_SCALE_ITIME_US(400000, APDS9306_MEAS_MODE_400MS, BIT(7)),
+	GAIN_SCALE_ITIME_US(200000, APDS9306_MEAS_MODE_200MS, BIT(6)),
+	GAIN_SCALE_ITIME_US(100000, APDS9306_MEAS_MODE_100MS, BIT(5)),
+	GAIN_SCALE_ITIME_US(50000, APDS9306_MEAS_MODE_50MS, BIT(4)),
+	GAIN_SCALE_ITIME_US(25000, APDS9306_MEAS_MODE_25MS, BIT(3)),
+	GAIN_SCALE_ITIME_US(3125, APDS9306_MEAS_MODE_3125US, BIT(0)),
+};
+
+static const struct iio_event_spec apds9306_event_spec[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_shared_by_all = BIT(IIO_EV_INFO_VALUE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_shared_by_all = BIT(IIO_EV_INFO_VALUE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD),
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH_ADAPTIVE,
+		.mask_shared_by_all = BIT(IIO_EV_INFO_VALUE) |
+			BIT(IIO_EV_INFO_ENABLE),
+	},
+};
+
+static const struct iio_chan_spec apds9306_channels_with_events[] = {
+	{
+		.type = IIO_LIGHT,
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME) |
+					   BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME) |
+						     BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_SCALE),
+		.event_spec = apds9306_event_spec,
+		.num_event_specs = ARRAY_SIZE(apds9306_event_spec),
+	}, {
+		.type = IIO_INTENSITY,
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME) |
+					   BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME) |
+						     BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.channel2 = IIO_MOD_LIGHT_CLEAR,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.modified = 1,
+		.event_spec = apds9306_event_spec,
+		.num_event_specs = ARRAY_SIZE(apds9306_event_spec),
+	},
+};
+
+static const struct iio_chan_spec apds9306_channels_without_events[] = {
+	{
+		.type = IIO_LIGHT,
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME) |
+					   BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME) |
+						     BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_SCALE),
+	}, {
+		.type = IIO_INTENSITY,
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME) |
+					   BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME) |
+						     BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.modified = 1,
+		.channel2 = IIO_MOD_LIGHT_CLEAR,
+	},
+};
+
+/* INT_PERSISTENCE available */
+static IIO_CONST_ATTR(thresh_either_period_available, "[0 1 15]");
+
+/* ALS_THRESH_VAR available */
+static IIO_CONST_ATTR(thresh_adaptive_either_values_available, "[0 1 7]");
+
+static struct attribute *apds9306_event_attributes[] = {
+	&iio_const_attr_thresh_either_period_available.dev_attr.attr,
+	&iio_const_attr_thresh_adaptive_either_values_available.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group apds9306_event_attr_group = {
+	.attrs = apds9306_event_attributes,
+};
+
+static const struct regmap_range apds9306_readable_ranges[] = {
+	regmap_reg_range(APDS9306_MAIN_CTRL_REG, APDS9306_ALS_THRES_VAR_REG)
+};
+
+static const struct regmap_range apds9306_writable_ranges[] = {
+	regmap_reg_range(APDS9306_MAIN_CTRL_REG, APDS9306_ALS_GAIN_REG),
+	regmap_reg_range(APDS9306_INT_CFG_REG, APDS9306_ALS_THRES_VAR_REG)
+};
+
+static const struct regmap_range apds9306_volatile_ranges[] = {
+	regmap_reg_range(APDS9306_MAIN_STATUS_REG, APDS9306_MAIN_STATUS_REG),
+	regmap_reg_range(APDS9306_CLEAR_DATA_0_REG, APDS9306_ALS_DATA_2_REG)
+};
+
+static const struct regmap_range apds9306_precious_ranges[] = {
+	regmap_reg_range(APDS9306_MAIN_STATUS_REG, APDS9306_MAIN_STATUS_REG)
+};
+
+static const struct regmap_access_table apds9306_readable_table = {
+	.yes_ranges = apds9306_readable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(apds9306_readable_ranges)
+};
+
+static const struct regmap_access_table apds9306_writable_table = {
+	.yes_ranges = apds9306_writable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(apds9306_writable_ranges)
+};
+
+static const struct regmap_access_table apds9306_volatile_table = {
+	.yes_ranges = apds9306_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(apds9306_volatile_ranges)
+};
+
+static const struct regmap_access_table apds9306_precious_table = {
+	.yes_ranges = apds9306_precious_ranges,
+	.n_yes_ranges = ARRAY_SIZE(apds9306_precious_ranges)
+};
+
+static const struct regmap_config apds9306_regmap = {
+	.name = "apds9306_regmap",
+	.reg_bits = 8,
+	.val_bits = 8,
+	.rd_table = &apds9306_readable_table,
+	.wr_table = &apds9306_writable_table,
+	.volatile_table = &apds9306_volatile_table,
+	.precious_table = &apds9306_precious_table,
+	.max_register = APDS9306_ALS_THRES_VAR_REG,
+	.cache_type = REGCACHE_RBTREE,
+};
+
+static const struct reg_field apds9306_rf_sw_reset =
+	REG_FIELD(APDS9306_MAIN_CTRL_REG, 4, 4);
+
+static const struct reg_field apds9306_rf_en =
+	REG_FIELD(APDS9306_MAIN_CTRL_REG, 1, 1);
+
+static const struct reg_field apds9306_rf_intg_time =
+	REG_FIELD(APDS9306_ALS_MEAS_RATE_REG, 4, 6);
+
+static const struct reg_field apds9306_rf_repeat_rate =
+	REG_FIELD(APDS9306_ALS_MEAS_RATE_REG, 0, 2);
+
+static const struct reg_field apds9306_rf_gain =
+	REG_FIELD(APDS9306_ALS_GAIN_REG, 0, 2);
+
+static const struct reg_field apds9306_rf_int_src =
+	REG_FIELD(APDS9306_INT_CFG_REG, 4, 5);
+
+static const struct reg_field apds9306_rf_int_thresh_var_en =
+	REG_FIELD(APDS9306_INT_CFG_REG, 3, 3);
+
+static const struct reg_field apds9306_rf_int_en =
+	REG_FIELD(APDS9306_INT_CFG_REG, 2, 2);
+
+static const struct reg_field apds9306_rf_int_persist_val =
+	REG_FIELD(APDS9306_INT_PERSISTENCE_REG, 4, 7);
+
+static const struct reg_field apds9306_rf_int_thresh_var_val =
+	REG_FIELD(APDS9306_ALS_THRES_VAR_REG, 0, 2);
+
+static int apds9306_regfield_init(struct apds9306_data *data)
+{
+	struct device *dev = data->dev;
+	struct regmap *regmap = data->regmap;
+	struct regmap_field *tmp;
+	struct apds9306_regfields *rf = &data->rf;
+
+	tmp = devm_regmap_field_alloc(dev, regmap, apds9306_rf_sw_reset);
+	if (IS_ERR(tmp))
+		return PTR_ERR(tmp);
+	rf->sw_reset = tmp;
+
+	tmp = devm_regmap_field_alloc(dev, regmap, apds9306_rf_en);
+	if (IS_ERR(tmp))
+		return PTR_ERR(tmp);
+	rf->en = tmp;
+
+	tmp = devm_regmap_field_alloc(dev, regmap, apds9306_rf_intg_time);
+	if (IS_ERR(tmp))
+		return PTR_ERR(tmp);
+	rf->intg_time = tmp;
+
+	tmp = devm_regmap_field_alloc(dev, regmap, apds9306_rf_repeat_rate);
+	if (IS_ERR(tmp))
+		return PTR_ERR(tmp);
+	rf->repeat_rate = tmp;
+
+	tmp = devm_regmap_field_alloc(dev, regmap, apds9306_rf_gain);
+	if (IS_ERR(tmp))
+		return PTR_ERR(tmp);
+	rf->gain = tmp;
+
+	tmp = devm_regmap_field_alloc(dev, regmap, apds9306_rf_int_src);
+	if (IS_ERR(tmp))
+		return PTR_ERR(tmp);
+	rf->int_src = tmp;
+
+	tmp = devm_regmap_field_alloc(dev, regmap, apds9306_rf_int_thresh_var_en);
+	if (IS_ERR(tmp))
+		return PTR_ERR(tmp);
+	rf->int_thresh_var_en = tmp;
+
+	tmp = devm_regmap_field_alloc(dev, regmap, apds9306_rf_int_en);
+	if (IS_ERR(tmp))
+		return PTR_ERR(tmp);
+	rf->int_en = tmp;
+
+	tmp = devm_regmap_field_alloc(dev, regmap, apds9306_rf_int_persist_val);
+	if (IS_ERR(tmp))
+		return PTR_ERR(tmp);
+	rf->int_persist_val = tmp;
+
+	tmp = devm_regmap_field_alloc(dev, regmap, apds9306_rf_int_thresh_var_val);
+	if (IS_ERR(tmp))
+		return PTR_ERR(tmp);
+	rf->int_thresh_var_val = tmp;
+
+	return 0;
+}
+
+static int apds9306_power_state(struct apds9306_data *data, bool state)
+{
+	struct apds9306_regfields *rf = &data->rf;
+	int ret;
+
+	/* Reset not included as it causes ugly I2C bus error */
+	if (state) {
+		ret = regmap_field_write(rf->en, 1);
+		if (ret)
+			return ret;
+		/* 5ms wake up time */
+		fsleep(5000);
+		return 0;
+	}
+
+	return regmap_field_write(rf->en, 0);
+}
+
+static int apds9306_read_data(struct apds9306_data *data, int *val, int reg)
+{
+	struct device *dev = data->dev;
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct apds9306_regfields *rf = &data->rf;
+	u64 ev_code;
+	int ret, delay, intg_time, intg_time_idx, repeat_rate_idx, int_src;
+	int status = 0;
+	u8 buff[3];
+
+	ret = pm_runtime_resume_and_get(data->dev);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_read(rf->intg_time, &intg_time_idx);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_read(rf->repeat_rate, &repeat_rate_idx);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_read(rf->int_src, &int_src);
+	if (ret)
+		return ret;
+
+	intg_time = iio_gts_find_int_time_by_sel(&data->gts, intg_time_idx);
+	if (intg_time < 0)
+		return intg_time;
+
+	/* Whichever is greater - integration time period or sampling period. */
+	delay = max(intg_time, apds9306_repeat_rate_period[repeat_rate_idx]);
+
+	/*
+	 * Clear stale data flag that might have been set by the interrupt
+	 * handler if it got data available flag set in the status reg.
+	 */
+	data->read_data_available = 0;
+
+	/*
+	 * If this function runs parallel with the interrupt handler, either
+	 * this reads and clears the status registers or the interrupt handler
+	 * does. The interrupt handler sets a flag for read data available
+	 * in our private structure which we read here.
+	 */
+	ret = regmap_read_poll_timeout(data->regmap, APDS9306_MAIN_STATUS_REG,
+				       status, data->read_data_available ||
+				       (status & (APDS9306_ALS_DATA_STAT_MASK |
+						  APDS9306_ALS_INT_STAT_MASK)),
+				       APDS9306_ALS_READ_DATA_DELAY_US, delay * 2);
+	if (ret)
+		return ret;
+
+	/* If we reach here before the interrupt handler we push an event */
+	if ((status & APDS9306_ALS_INT_STAT_MASK)) {
+		if (int_src == APDS9306_INT_SRC_ALS)
+			ev_code = IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
+						       IIO_EV_TYPE_THRESH,
+						       IIO_EV_DIR_EITHER);
+		else
+			ev_code = IIO_MOD_EVENT_CODE(IIO_INTENSITY, 0,
+						     IIO_MOD_LIGHT_CLEAR,
+						     IIO_EV_TYPE_THRESH,
+						     IIO_EV_DIR_EITHER);
+
+		iio_push_event(indio_dev, ev_code, iio_get_time_ns(indio_dev));
+	}
+
+	ret = regmap_bulk_read(data->regmap, reg, buff, sizeof(buff));
+	if (ret) {
+		dev_err_ratelimited(dev, "read data failed\n");
+		return ret;
+	}
+
+	*val = get_unaligned_le24(&buff);
+
+	pm_runtime_mark_last_busy(data->dev);
+	pm_runtime_put_autosuspend(data->dev);
+
+	return 0;
+}
+
+static int apds9306_intg_time_get(struct apds9306_data *data, int *val2)
+{
+	struct apds9306_regfields *rf = &data->rf;
+	int ret, intg_time_idx;
+
+	ret = regmap_field_read(rf->intg_time, &intg_time_idx);
+	if (ret)
+		return ret;
+
+	ret = iio_gts_find_int_time_by_sel(&data->gts, intg_time_idx);
+	if (ret < 0)
+		return ret;
+
+	*val2 = ret;
+
+	return 0;
+}
+
+static int apds9306_intg_time_set(struct apds9306_data *data, int val2)
+{
+	struct device *dev = data->dev;
+	struct apds9306_regfields *rf = &data->rf;
+	int ret, intg_old, gain_old, gain_new, gain_new_closest, intg_time_idx;
+	int gain_idx;
+	bool ok;
+
+	if (!iio_gts_valid_time(&data->gts, val2)) {
+		dev_err_ratelimited(dev, "Unsupported integration time %u\n", val2);
+		return -EINVAL;
+	}
+
+	ret = regmap_field_read(rf->intg_time, &intg_time_idx);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_read(rf->gain, &gain_idx);
+	if (ret)
+		return ret;
+
+	intg_old = iio_gts_find_int_time_by_sel(&data->gts, intg_time_idx);
+	if (ret < 0)
+		return ret;
+
+	if (intg_old == val2)
+		return 0;
+
+	gain_old = iio_gts_find_gain_by_sel(&data->gts, gain_idx);
+	if (gain_old < 0)
+		return gain_old;
+
+	iio_gts_find_new_gain_by_old_gain_time(&data->gts, gain_old, intg_old,
+					       val2, &gain_new);
+
+	if (gain_new < 0) {
+		dev_err_ratelimited(dev, "Unsupported gain with time\n");
+		return gain_new;
+	}
+
+	gain_new_closest = iio_find_closest_gain_low(&data->gts, gain_new, &ok);
+	if (gain_new_closest < 0) {
+		gain_new_closest = iio_gts_get_min_gain(&data->gts);
+		if (gain_new_closest < 0)
+			return gain_new_closest;
+	}
+	if (!ok)
+		dev_dbg(dev, "Unable to find optimum gain, setting minimum");
+
+	ret = iio_gts_find_sel_by_int_time(&data->gts, val2);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_field_write(rf->intg_time, ret);
+	if (ret)
+		return ret;
+
+	ret = iio_gts_find_sel_by_gain(&data->gts, gain_new_closest);
+	if (ret < 0)
+		return ret;
+
+	return regmap_field_write(rf->gain, ret);
+}
+
+static int apds9306_sampling_freq_get(struct apds9306_data *data, int *val,
+				      int *val2)
+{
+	struct apds9306_regfields *rf = &data->rf;
+	int ret, repeat_rate_idx;
+
+	ret = regmap_field_read(rf->repeat_rate, &repeat_rate_idx);
+	if (ret)
+		return ret;
+
+	if (repeat_rate_idx >= ARRAY_SIZE(apds9306_repeat_rate_freq))
+		return -EINVAL;
+
+	*val = apds9306_repeat_rate_freq[repeat_rate_idx][0];
+	*val2 = apds9306_repeat_rate_freq[repeat_rate_idx][1];
+
+	return 0;
+}
+
+static int apds9306_sampling_freq_set(struct apds9306_data *data, int val,
+				      int val2)
+{
+	struct apds9306_regfields *rf = &data->rf;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(apds9306_repeat_rate_freq); i++) {
+		if (apds9306_repeat_rate_freq[i][0] == val &&
+		    apds9306_repeat_rate_freq[i][1] == val2)
+			return regmap_field_write(rf->repeat_rate, i);
+	}
+
+	return -EINVAL;
+}
+
+static int apds9306_scale_get(struct apds9306_data *data, int *val, int *val2)
+{
+	struct apds9306_regfields *rf = &data->rf;
+	int gain, intg, ret, intg_time_idx, gain_idx;
+
+	ret = regmap_field_read(rf->gain, &gain_idx);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_read(rf->intg_time, &intg_time_idx);
+	if (ret)
+		return ret;
+
+	gain = iio_gts_find_gain_by_sel(&data->gts, gain_idx);
+	if (gain < 0)
+		return gain;
+
+	intg = iio_gts_find_int_time_by_sel(&data->gts, intg_time_idx);
+	if (intg < 0)
+		return intg;
+
+	return iio_gts_get_scale(&data->gts, gain, intg, val, val2);
+}
+
+static int apds9306_scale_set(struct apds9306_data *data, int val, int val2)
+{
+	struct apds9306_regfields *rf = &data->rf;
+	int i, ret, time_sel, gain_sel, intg_time_idx;
+
+	ret = regmap_field_read(rf->intg_time, &intg_time_idx);
+	if (ret)
+		return ret;
+
+	ret = iio_gts_find_gain_sel_for_scale_using_time(&data->gts,
+					intg_time_idx, val, val2, &gain_sel);
+	if (ret) {
+		for (i = 0; i < data->gts.num_itime; i++) {
+			time_sel = data->gts.itime_table[i].sel;
+
+			if (time_sel == intg_time_idx)
+				continue;
+
+			ret = iio_gts_find_gain_sel_for_scale_using_time(&data->gts,
+						time_sel, val, val2, &gain_sel);
+			if (!ret)
+				break;
+		}
+		if (ret)
+			return -EINVAL;
+
+		ret = regmap_field_write(rf->intg_time, time_sel);
+		if (ret)
+			return ret;
+	}
+
+	return regmap_field_write(rf->gain, gain_sel);
+}
+
+static int apds9306_event_period_get(struct apds9306_data *data, int *val)
+{
+	struct apds9306_regfields *rf = &data->rf;
+	int period, ret;
+
+	ret = regmap_field_read(rf->int_persist_val, &period);
+	if (ret)
+		return ret;
+
+	if (!in_range(period, 0, APDS9306_ALS_PERSIST_NUM_VALS))
+		return -EINVAL;
+
+	*val = period;
+
+	return ret;
+}
+
+static int apds9306_event_period_set(struct apds9306_data *data, int val)
+{
+	struct apds9306_regfields *rf = &data->rf;
+
+	if (!in_range(val, 0, APDS9306_ALS_PERSIST_NUM_VALS))
+		return -EINVAL;
+
+	return regmap_field_write(rf->int_persist_val, val);
+}
+
+static int apds9306_event_thresh_get(struct apds9306_data *data, int dir,
+				     int *val)
+{
+	int var, ret;
+	u8 buff[3];
+
+	if (dir == IIO_EV_DIR_RISING)
+		var = APDS9306_ALS_THRES_UP_0_REG;
+	else if (dir == IIO_EV_DIR_FALLING)
+		var = APDS9306_ALS_THRES_LOW_0_REG;
+	else
+		return -EINVAL;
+
+	ret = regmap_bulk_read(data->regmap, var, buff, sizeof(buff));
+	if (ret)
+		return ret;
+
+	*val = get_unaligned_le24(&buff);
+
+	return 0;
+}
+
+static int apds9306_event_thresh_set(struct apds9306_data *data, int dir,
+				     int val)
+{
+	int var;
+	u8 buff[3];
+
+	if (dir == IIO_EV_DIR_RISING)
+		var = APDS9306_ALS_THRES_UP_0_REG;
+	else if (dir == IIO_EV_DIR_FALLING)
+		var = APDS9306_ALS_THRES_LOW_0_REG;
+	else
+		return -EINVAL;
+
+	if (!in_range(val, 0, APDS9306_ALS_THRES_VAL_MAX))
+		return -EINVAL;
+
+	put_unaligned_le24(val, buff);
+
+	return regmap_bulk_write(data->regmap, var, buff, sizeof(buff));
+}
+
+static int apds9306_event_thresh_adaptive_get(struct apds9306_data *data, int *val)
+{
+	struct apds9306_regfields *rf = &data->rf;
+	int thr_adpt, ret;
+
+	ret = regmap_field_read(rf->int_thresh_var_val, &thr_adpt);
+	if (ret)
+		return ret;
+
+	if (!in_range(thr_adpt, 0, APDS9306_ALS_THRES_VAR_NUM_VALS))
+		return -EINVAL;
+
+	*val = thr_adpt;
+
+	return ret;
+}
+
+static int apds9306_event_thresh_adaptive_set(struct apds9306_data *data, int val)
+{
+	struct apds9306_regfields *rf = &data->rf;
+
+	if (!in_range(val, 0, APDS9306_ALS_THRES_VAR_NUM_VALS))
+		return -EINVAL;
+
+	return regmap_field_write(rf->int_thresh_var_val, val);
+}
+
+static int apds9306_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan, int *val,
+			     int *val2, long mask)
+{
+	struct apds9306_data *data = iio_priv(indio_dev);
+	int ret, reg;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		if (chan->channel2 == IIO_MOD_LIGHT_CLEAR)
+			reg = APDS9306_CLEAR_DATA_0_REG;
+		else
+			reg = APDS9306_ALS_DATA_0_REG;
+		/*
+		 * Changing device parameters during adc operation, resets
+		 * the ADC which has to avoided.
+		 */
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		ret = apds9306_read_data(data, val, reg);
+		iio_device_release_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_INT_TIME:
+		ret = apds9306_intg_time_get(data, val2);
+		if (ret)
+			return ret;
+		*val = 0;
+
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = apds9306_sampling_freq_get(data, val, val2);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_SCALE:
+		ret = apds9306_scale_get(data, val, val2);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT_PLUS_NANO;
+	default:
+		return -EINVAL;
+	}
+};
+
+static int apds9306_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long mask)
+{
+	struct apds9306_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_INT_TIME:
+		return iio_gts_avail_times(&data->gts, vals, type, length);
+	case IIO_CHAN_INFO_SCALE:
+		return iio_gts_all_avail_scales(&data->gts, vals, type, length);
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*length = ARRAY_SIZE(apds9306_repeat_rate_freq) * 2;
+		*vals = (const int *)apds9306_repeat_rate_freq;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int apds9306_write_raw_get_fmt(struct iio_dev *indio_dev,
+				      struct iio_chan_spec const *chan,
+				      long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		return IIO_VAL_INT_PLUS_NANO;
+	case IIO_CHAN_INFO_INT_TIME:
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int apds9306_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan, int val,
+			      int val2, long mask)
+{
+	struct apds9306_data *data = iio_priv(indio_dev);
+
+	guard(mutex)(&data->mutex);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_INT_TIME:
+		if (val)
+			return -EINVAL;
+		return apds9306_intg_time_set(data, val2);
+	case IIO_CHAN_INFO_SCALE:
+		return apds9306_scale_set(data, val, val2);
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return apds9306_sampling_freq_set(data, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static irqreturn_t apds9306_irq_handler(int irq, void *priv)
+{
+	struct iio_dev *indio_dev = priv;
+	struct apds9306_data *data = iio_priv(indio_dev);
+	struct apds9306_regfields *rf = &data->rf;
+	u64 ev_code;
+	int ret, status, int_src;
+
+	/*
+	 * The interrupt line is released and the interrupt flag is
+	 * cleared as a result of reading the status register. All the
+	 * status flags are cleared as a result of this read.
+	 */
+	ret = regmap_read(data->regmap, APDS9306_MAIN_STATUS_REG, &status);
+	if (ret < 0) {
+		dev_err_ratelimited(data->dev, "status reg read failed\n");
+		return IRQ_HANDLED;
+	}
+
+	ret = regmap_field_read(rf->int_src, &int_src);
+	if (ret)
+		return ret;
+
+	if ((status & APDS9306_ALS_INT_STAT_MASK)) {
+		if (int_src == APDS9306_INT_SRC_ALS)
+			ev_code = IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
+						       IIO_EV_TYPE_THRESH,
+						       IIO_EV_DIR_EITHER);
+		else
+			ev_code = IIO_MOD_EVENT_CODE(IIO_INTENSITY, 0,
+						     IIO_MOD_LIGHT_CLEAR,
+						     IIO_EV_TYPE_THRESH,
+						     IIO_EV_DIR_EITHER);
+
+		iio_push_event(indio_dev, ev_code, iio_get_time_ns(indio_dev));
+	}
+
+	/*
+	 * If a one-shot read through sysfs is underway at the same time
+	 * as this interrupt handler is executing and a read data available
+	 * flag was set, this flag is set to inform read_poll_timeout()
+	 * to exit.
+	 */
+	if ((status & APDS9306_ALS_DATA_STAT_MASK))
+		data->read_data_available = 1;
+
+	return IRQ_HANDLED;
+}
+
+static int apds9306_read_event(struct iio_dev *indio_dev,
+			       const struct iio_chan_spec *chan,
+			       enum iio_event_type type,
+			       enum iio_event_direction dir,
+			       enum iio_event_info info,
+			       int *val, int *val2)
+{
+	struct apds9306_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (type) {
+	case IIO_EV_TYPE_THRESH:
+		if (dir == IIO_EV_DIR_EITHER && info == IIO_EV_INFO_PERIOD)
+			ret = apds9306_event_period_get(data, val);
+		else
+			ret = apds9306_event_thresh_get(data, dir, val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_EV_TYPE_THRESH_ADAPTIVE:
+		ret = apds9306_event_thresh_adaptive_get(data, val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int apds9306_write_event(struct iio_dev *indio_dev,
+				const struct iio_chan_spec *chan,
+				enum iio_event_type type,
+				enum iio_event_direction dir,
+				enum iio_event_info info,
+				int val, int val2)
+{
+	struct apds9306_data *data = iio_priv(indio_dev);
+
+	switch (type) {
+	case IIO_EV_TYPE_THRESH:
+		if (dir == IIO_EV_DIR_EITHER && info == IIO_EV_INFO_PERIOD)
+			return apds9306_event_period_set(data, val);
+
+		return apds9306_event_thresh_set(data, dir, val);
+	case IIO_EV_TYPE_THRESH_ADAPTIVE:
+		return apds9306_event_thresh_adaptive_set(data, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int apds9306_read_event_config(struct iio_dev *indio_dev,
+				      const struct iio_chan_spec *chan,
+				      enum iio_event_type type,
+				      enum iio_event_direction dir)
+{
+	struct apds9306_data *data = iio_priv(indio_dev);
+	struct apds9306_regfields *rf = &data->rf;
+	int int_en, int_src, ret;
+
+	switch (type) {
+	case IIO_EV_TYPE_THRESH: {
+		guard(mutex)(&data->mutex);
+
+		ret = regmap_field_read(rf->int_src, &int_src);
+		if (ret)
+			return ret;
+
+		ret = regmap_field_read(rf->int_en, &int_en);
+		if (ret)
+			return ret;
+
+		if (chan->type == IIO_LIGHT)
+			return int_en && (int_src == APDS9306_INT_SRC_ALS);
+
+		if (chan->type == IIO_INTENSITY)
+			return int_en && (int_src == APDS9306_INT_SRC_CLEAR);
+
+		return -EINVAL;
+	}
+	case IIO_EV_TYPE_THRESH_ADAPTIVE:
+		ret = regmap_field_read(rf->int_thresh_var_en, &int_en);
+		if (ret)
+			return ret;
+
+		return int_en;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int apds9306_write_event_config(struct iio_dev *indio_dev,
+				       const struct iio_chan_spec *chan,
+				       enum iio_event_type type,
+				       enum iio_event_direction dir,
+				       int state)
+{
+	struct apds9306_data *data = iio_priv(indio_dev);
+	struct apds9306_regfields *rf = &data->rf;
+	int ret, enabled;
+
+	switch (type) {
+	case IIO_EV_TYPE_THRESH: {
+		guard(mutex)(&data->mutex);
+
+		ret = regmap_field_read(rf->int_en, &enabled);
+		if (ret)
+			return ret;
+
+		/*
+		 * If interrupt is enabled, the channel is set before enabling
+		 * the interrupt. In case of disable, no need to switch
+		 * channels. In case of different channel is selected while
+		 * interrupt in on, just change the channel.
+		 */
+		if (state) {
+			if (chan->type == IIO_LIGHT)
+				ret = regmap_field_write(rf->int_src, 1);
+			else if (chan->type == IIO_INTENSITY)
+				ret = regmap_field_write(rf->int_src, 0);
+			else
+				return -EINVAL;
+
+			if (ret)
+				return ret;
+
+			if (enabled)
+				return 0;
+
+			ret = regmap_field_write(rf->int_en, 1);
+			if (ret)
+				return ret;
+
+			return pm_runtime_resume_and_get(data->dev);
+		} else {
+			if (!enabled)
+				return 0;
+
+			ret = regmap_field_write(rf->int_en, 0);
+			if (ret)
+				return ret;
+
+			pm_runtime_mark_last_busy(data->dev);
+			pm_runtime_put_autosuspend(data->dev);
+
+			return 0;
+		}
+	}
+	case IIO_EV_TYPE_THRESH_ADAPTIVE:
+		if (state)
+			return regmap_field_write(rf->int_thresh_var_en, 1);
+		else
+			return regmap_field_write(rf->int_thresh_var_en, 0);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info apds9306_info_no_events = {
+	.read_avail = apds9306_read_avail,
+	.read_raw = apds9306_read_raw,
+	.write_raw = apds9306_write_raw,
+	.write_raw_get_fmt = apds9306_write_raw_get_fmt,
+};
+
+static const struct iio_info apds9306_info = {
+	.read_avail = apds9306_read_avail,
+	.read_raw = apds9306_read_raw,
+	.write_raw = apds9306_write_raw,
+	.write_raw_get_fmt = apds9306_write_raw_get_fmt,
+	.read_event_value = apds9306_read_event,
+	.write_event_value = apds9306_write_event,
+	.read_event_config = apds9306_read_event_config,
+	.write_event_config = apds9306_write_event_config,
+	.event_attrs = &apds9306_event_attr_group,
+};
+
+static int apds9306_init_iio_gts(struct apds9306_data *data)
+{
+	int i, ret, part_id;
+
+	ret = regmap_read(data->regmap, APDS9306_PART_ID_REG, &part_id);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < ARRAY_SIZE(apds9306_gts_mul); i++)
+		if (part_id == apds9306_gts_mul[i].part_id)
+			break;
+
+	if (i == ARRAY_SIZE(apds9306_gts_mul))
+		return -ENOENT;
+
+	return devm_iio_init_iio_gts(data->dev,
+				     apds9306_gts_mul[i].max_scale_int,
+				     apds9306_gts_mul[i].max_scale_nano,
+				     apds9306_gains, ARRAY_SIZE(apds9306_gains),
+				     apds9306_itimes, ARRAY_SIZE(apds9306_itimes),
+				     &data->gts);
+}
+
+static void apds9306_powerdown(void *ptr)
+{
+	struct apds9306_data *data = (struct apds9306_data *)ptr;
+	struct apds9306_regfields *rf = &data->rf;
+	int ret;
+
+	ret = regmap_field_write(rf->int_thresh_var_en, 0);
+	if (ret)
+		return;
+
+	ret = regmap_field_write(rf->int_en, 0);
+	if (ret)
+		return;
+
+	apds9306_power_state(data, false);
+}
+
+static int apds9306_device_init(struct apds9306_data *data)
+{
+	struct apds9306_regfields *rf = &data->rf;
+	int ret;
+
+	ret = apds9306_init_iio_gts(data);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(rf->intg_time, APDS9306_MEAS_MODE_100MS);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(rf->repeat_rate, APDS9306_SAMP_FREQ_10HZ);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(rf->gain, APDS9306_GSEL_3X);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(rf->int_src, APDS9306_INT_SRC_ALS);
+	if (ret)
+		return ret;
+
+	ret = regmap_field_write(rf->int_en, 0);
+	if (ret)
+		return ret;
+
+	return regmap_field_write(rf->int_thresh_var_en, 0);
+}
+
+static int apds9306_pm_init(struct apds9306_data *data)
+{
+	struct device *dev = data->dev;
+	int ret;
+
+	ret = apds9306_power_state(data, true);
+	if (ret)
+		return ret;
+
+	ret = pm_runtime_set_active(dev);
+	if (ret)
+		return ret;
+
+	ret = devm_pm_runtime_enable(dev);
+	if (ret)
+		return ret;
+
+	pm_runtime_set_autosuspend_delay(dev, 5000);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_get(dev);
+
+	return 0;
+}
+
+static int apds9306_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct apds9306_data *data;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+
+	mutex_init(&data->mutex);
+
+	data->regmap = devm_regmap_init_i2c(client, &apds9306_regmap);
+	if (IS_ERR(data->regmap))
+		return dev_err_probe(dev, PTR_ERR(data->regmap),
+				     "regmap initialization failed\n");
+
+	data->dev = dev;
+	i2c_set_clientdata(client, indio_dev);
+
+	ret = apds9306_regfield_init(data);
+	if (ret)
+		return dev_err_probe(dev, ret, "regfield initialization failed\n");
+
+	ret = devm_regulator_get_enable(dev, "vdd");
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to enable regulator\n");
+
+	indio_dev->name = "apds9306";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	if (client->irq) {
+		indio_dev->info = &apds9306_info;
+		indio_dev->channels = apds9306_channels_with_events;
+		indio_dev->num_channels = ARRAY_SIZE(apds9306_channels_with_events);
+		ret = devm_request_threaded_irq(dev, client->irq, NULL,
+						apds9306_irq_handler, IRQF_ONESHOT,
+						"apds9306_event", indio_dev);
+		if (ret)
+			return dev_err_probe(dev, ret,
+					     "failed to assign interrupt.\n");
+	} else {
+		indio_dev->info = &apds9306_info_no_events;
+		indio_dev->channels = apds9306_channels_without_events;
+		indio_dev->num_channels =
+				ARRAY_SIZE(apds9306_channels_without_events);
+	}
+
+	ret = apds9306_pm_init(data);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed pm init\n");
+
+	ret = apds9306_device_init(data);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to init device\n");
+
+	ret = devm_add_action_or_reset(dev, apds9306_powerdown, data);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to add action or reset\n");
+
+	ret = devm_iio_device_register(dev, indio_dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed iio device registration\n");
+
+	pm_runtime_put_autosuspend(dev);
+
+	return 0;
+}
+
+static int apds9306_runtime_suspend(struct device *dev)
+{
+	struct apds9306_data *data = iio_priv(dev_get_drvdata(dev));
+
+	return apds9306_power_state(data, false);
+}
+
+static int apds9306_runtime_resume(struct device *dev)
+{
+	struct apds9306_data *data = iio_priv(dev_get_drvdata(dev));
+
+	return apds9306_power_state(data, true);
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(apds9306_pm_ops,
+				 apds9306_runtime_suspend,
+				 apds9306_runtime_resume,
+				 NULL);
+
+static const struct of_device_id apds9306_of_match[] = {
+	{ .compatible = "avago,apds9306" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, apds9306_of_match);
+
+static struct i2c_driver apds9306_driver = {
+	.driver = {
+		.name = "apds9306",
+		.pm = pm_ptr(&apds9306_pm_ops),
+		.of_match_table = apds9306_of_match,
+	},
+	.probe = apds9306_probe,
+};
+module_i2c_driver(apds9306_driver);
+
+MODULE_AUTHOR("Subhajit Ghosh <subhajit.ghosh@tweaklogic.com>");
+MODULE_DESCRIPTION("APDS9306 Ambient Light Sensor driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_GTS_HELPER);
diff --git a/drivers/iio/light/st_uvis25_core.c b/drivers/iio/light/st_uvis25_core.c
index 50f95c5d2060..d4e17079b2f4 100644
--- a/drivers/iio/light/st_uvis25_core.c
+++ b/drivers/iio/light/st_uvis25_core.c
@@ -291,7 +291,7 @@ int st_uvis25_probe(struct device *dev, int irq, struct regmap *regmap)
 	if (!iio_dev)
 		return -ENOMEM;
 
-	dev_set_drvdata(dev, (void *)iio_dev);
+	dev_set_drvdata(dev, iio_dev);
 
 	hw = iio_priv(iio_dev);
 	hw->irq = irq;
diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c
index 7b71ad71d78d..08d471438175 100644
--- a/drivers/iio/light/stk3310.c
+++ b/drivers/iio/light/stk3310.c
@@ -693,7 +693,6 @@ MODULE_DEVICE_TABLE(i2c, stk3310_i2c_id);
 static const struct acpi_device_id stk3310_acpi_id[] = {
 	{"STK3310", 0},
 	{"STK3311", 0},
-	{"STK3335", 0},
 	{}
 };
 
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index 62e9e93d915d..09f53d987c7d 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -27,20 +27,20 @@
 
 #include <linux/bitops.h>
 #include <linux/bitfield.h>
-#include <linux/device.h>
-#include <linux/module.h>
-#include <linux/nvmem-provider.h>
-#include <linux/regmap.h>
+#include <linux/completion.h>
 #include <linux/delay.h>
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
+#include <linux/device.h>
 #include <linux/gpio/consumer.h>
-#include <linux/regulator/consumer.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h> /* For irq_get_irq_data() */
-#include <linux/completion.h>
+#include <linux/module.h>
+#include <linux/nvmem-provider.h>
 #include <linux/pm_runtime.h>
 #include <linux/random.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+
+#include <linux/iio/iio.h>
 
 #include <asm/unaligned.h>
 
diff --git a/drivers/iio/pressure/dps310.c b/drivers/iio/pressure/dps310.c
index 1ff091b2f764..7d882e15e556 100644
--- a/drivers/iio/pressure/dps310.c
+++ b/drivers/iio/pressure/dps310.c
@@ -171,7 +171,7 @@ static int dps310_temp_workaround(struct dps310_data *data)
 	int reg;
 
 	rc = regmap_read(data->regmap, 0x32, &reg);
-	if (rc)
+	if (rc < 0)
 		return rc;
 
 	/*
@@ -256,24 +256,24 @@ static int dps310_startup(struct dps310_data *data)
 	return dps310_temp_workaround(data);
 }
 
-static int dps310_get_pres_precision(struct dps310_data *data)
+static int dps310_get_pres_precision(struct dps310_data *data, int *val)
 {
-	int rc;
-	int val;
+	int reg_val, rc;
 
-	rc = regmap_read(data->regmap, DPS310_PRS_CFG, &val);
+	rc = regmap_read(data->regmap, DPS310_PRS_CFG, &reg_val);
 	if (rc < 0)
 		return rc;
 
-	return BIT(val & GENMASK(2, 0));
+	*val = BIT(reg_val & GENMASK(2, 0));
+
+	return 0;
 }
 
-static int dps310_get_temp_precision(struct dps310_data *data)
+static int dps310_get_temp_precision(struct dps310_data *data, int *val)
 {
-	int rc;
-	int val;
+	int reg_val, rc;
 
-	rc = regmap_read(data->regmap, DPS310_TMP_CFG, &val);
+	rc = regmap_read(data->regmap, DPS310_TMP_CFG, &reg_val);
 	if (rc < 0)
 		return rc;
 
@@ -281,7 +281,9 @@ static int dps310_get_temp_precision(struct dps310_data *data)
 	 * Scale factor is bottom 4 bits of the register, but 1111 is
 	 * reserved so just grab bottom three
 	 */
-	return BIT(val & GENMASK(2, 0));
+	*val = BIT(reg_val & GENMASK(2, 0));
+
+	return 0;
 }
 
 /* Called with lock held */
@@ -350,48 +352,56 @@ static int dps310_set_temp_samp_freq(struct dps310_data *data, int freq)
 				  DPS310_TMP_RATE_BITS, val);
 }
 
-static int dps310_get_pres_samp_freq(struct dps310_data *data)
+static int dps310_get_pres_samp_freq(struct dps310_data *data, int *val)
 {
-	int rc;
-	int val;
+	int reg_val, rc;
 
-	rc = regmap_read(data->regmap, DPS310_PRS_CFG, &val);
+	rc = regmap_read(data->regmap, DPS310_PRS_CFG, &reg_val);
 	if (rc < 0)
 		return rc;
 
-	return BIT((val & DPS310_PRS_RATE_BITS) >> 4);
+	*val = BIT((reg_val & DPS310_PRS_RATE_BITS) >> 4);
+
+	return 0;
 }
 
-static int dps310_get_temp_samp_freq(struct dps310_data *data)
+static int dps310_get_temp_samp_freq(struct dps310_data *data, int *val)
 {
-	int rc;
-	int val;
+	int reg_val, rc;
 
-	rc = regmap_read(data->regmap, DPS310_TMP_CFG, &val);
+	rc = regmap_read(data->regmap, DPS310_TMP_CFG, &reg_val);
 	if (rc < 0)
 		return rc;
 
-	return BIT((val & DPS310_TMP_RATE_BITS) >> 4);
+	*val = BIT((reg_val & DPS310_TMP_RATE_BITS) >> 4);
+
+	return 0;
 }
 
-static int dps310_get_pres_k(struct dps310_data *data)
+static int dps310_get_pres_k(struct dps310_data *data, int *val)
 {
-	int rc = dps310_get_pres_precision(data);
+	int reg_val, rc;
 
+	rc = regmap_read(data->regmap, DPS310_PRS_CFG, &reg_val);
 	if (rc < 0)
 		return rc;
 
-	return scale_factors[ilog2(rc)];
+	*val = scale_factors[reg_val & GENMASK(2, 0)];
+
+	return 0;
 }
 
-static int dps310_get_temp_k(struct dps310_data *data)
+static int dps310_get_temp_k(struct dps310_data *data, int *val)
 {
-	int rc = dps310_get_temp_precision(data);
+	int reg_val, rc;
 
+	rc = regmap_read(data->regmap, DPS310_TMP_CFG, &reg_val);
 	if (rc < 0)
 		return rc;
 
-	return scale_factors[ilog2(rc)];
+	*val = scale_factors[reg_val & GENMASK(2, 0)];
+
+	return 0;
 }
 
 static int dps310_reset_wait(struct dps310_data *data)
@@ -464,7 +474,10 @@ static int dps310_read_pres_raw(struct dps310_data *data)
 	if (mutex_lock_interruptible(&data->lock))
 		return -EINTR;
 
-	rate = dps310_get_pres_samp_freq(data);
+	rc = dps310_get_pres_samp_freq(data, &rate);
+	if (rc)
+		goto done;
+
 	timeout = DPS310_POLL_TIMEOUT_US(rate);
 
 	/* Poll for sensor readiness; base the timeout upon the sample rate. */
@@ -510,7 +523,10 @@ static int dps310_read_temp_raw(struct dps310_data *data)
 	if (mutex_lock_interruptible(&data->lock))
 		return -EINTR;
 
-	rate = dps310_get_temp_samp_freq(data);
+	rc = dps310_get_temp_samp_freq(data, &rate);
+	if (rc)
+		goto done;
+
 	timeout = DPS310_POLL_TIMEOUT_US(rate);
 
 	/* Poll for sensor readiness; base the timeout upon the sample rate. */
@@ -612,13 +628,13 @@ static int dps310_write_raw(struct iio_dev *iio,
 	return rc;
 }
 
-static int dps310_calculate_pressure(struct dps310_data *data)
+static int dps310_calculate_pressure(struct dps310_data *data, int *val)
 {
 	int i;
 	int rc;
 	int t_ready;
-	int kpi = dps310_get_pres_k(data);
-	int kti = dps310_get_temp_k(data);
+	int kpi;
+	int kti;
 	s64 rem = 0ULL;
 	s64 pressure = 0ULL;
 	s64 p;
@@ -629,11 +645,13 @@ static int dps310_calculate_pressure(struct dps310_data *data)
 	s64 kp;
 	s64 kt;
 
-	if (kpi < 0)
-		return kpi;
+	rc = dps310_get_pres_k(data, &kpi);
+	if (rc)
+		return rc;
 
-	if (kti < 0)
-		return kti;
+	rc = dps310_get_temp_k(data, &kti);
+	if (rc)
+		return rc;
 
 	kp = (s64)kpi;
 	kt = (s64)kti;
@@ -687,7 +705,9 @@ static int dps310_calculate_pressure(struct dps310_data *data)
 	if (pressure < 0LL)
 		return -ERANGE;
 
-	return (int)min_t(s64, pressure, INT_MAX);
+	*val = (int)min_t(s64, pressure, INT_MAX);
+
+	return 0;
 }
 
 static int dps310_read_pressure(struct dps310_data *data, int *val, int *val2,
@@ -697,11 +717,10 @@ static int dps310_read_pressure(struct dps310_data *data, int *val, int *val2,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		rc = dps310_get_pres_samp_freq(data);
-		if (rc < 0)
+		rc = dps310_get_pres_samp_freq(data, val);
+		if (rc)
 			return rc;
 
-		*val = rc;
 		return IIO_VAL_INT;
 
 	case IIO_CHAN_INFO_PROCESSED:
@@ -709,20 +728,17 @@ static int dps310_read_pressure(struct dps310_data *data, int *val, int *val2,
 		if (rc)
 			return rc;
 
-		rc = dps310_calculate_pressure(data);
-		if (rc < 0)
+		rc = dps310_calculate_pressure(data, val);
+		if (rc)
 			return rc;
 
-		*val = rc;
 		*val2 = 1000; /* Convert Pa to KPa per IIO ABI */
 		return IIO_VAL_FRACTIONAL;
 
 	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
-		rc = dps310_get_pres_precision(data);
-		if (rc < 0)
+		rc = dps310_get_pres_precision(data, val);
+		if (rc)
 			return rc;
-
-		*val = rc;
 		return IIO_VAL_INT;
 
 	default:
@@ -730,14 +746,15 @@ static int dps310_read_pressure(struct dps310_data *data, int *val, int *val2,
 	}
 }
 
-static int dps310_calculate_temp(struct dps310_data *data)
+static int dps310_calculate_temp(struct dps310_data *data, int *val)
 {
 	s64 c0;
 	s64 t;
-	int kt = dps310_get_temp_k(data);
+	int kt, rc;
 
-	if (kt < 0)
-		return kt;
+	rc = dps310_get_temp_k(data, &kt);
+	if (rc)
+		return rc;
 
 	/* Obtain inverse-scaled offset */
 	c0 = div_s64((s64)kt * (s64)data->c0, 2);
@@ -746,7 +763,9 @@ static int dps310_calculate_temp(struct dps310_data *data)
 	t = c0 + ((s64)data->temp_raw * (s64)data->c1);
 
 	/* Convert to milliCelsius and scale the temperature */
-	return (int)div_s64(t * 1000LL, kt);
+	*val = (int)div_s64(t * 1000LL, kt);
+
+	return 0;
 }
 
 static int dps310_read_temp(struct dps310_data *data, int *val, int *val2,
@@ -756,11 +775,10 @@ static int dps310_read_temp(struct dps310_data *data, int *val, int *val2,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		rc = dps310_get_temp_samp_freq(data);
-		if (rc < 0)
+		rc = dps310_get_temp_samp_freq(data, val);
+		if (rc)
 			return rc;
 
-		*val = rc;
 		return IIO_VAL_INT;
 
 	case IIO_CHAN_INFO_PROCESSED:
@@ -768,19 +786,17 @@ static int dps310_read_temp(struct dps310_data *data, int *val, int *val2,
 		if (rc)
 			return rc;
 
-		rc = dps310_calculate_temp(data);
-		if (rc < 0)
+		rc = dps310_calculate_temp(data, val);
+		if (rc)
 			return rc;
 
-		*val = rc;
 		return IIO_VAL_INT;
 
 	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
-		rc = dps310_get_temp_precision(data);
-		if (rc < 0)
+		rc = dps310_get_temp_precision(data, val);
+		if (rc)
 			return rc;
 
-		*val = rc;
 		return IIO_VAL_INT;
 
 	default:
diff --git a/drivers/iio/pressure/hsc030pa_spi.c b/drivers/iio/pressure/hsc030pa_spi.c
index 818fa6303454..337eecc577d2 100644
--- a/drivers/iio/pressure/hsc030pa_spi.c
+++ b/drivers/iio/pressure/hsc030pa_spi.c
@@ -23,14 +23,9 @@
 static int hsc_spi_recv(struct hsc_data *data)
 {
 	struct spi_device *spi = to_spi_device(data->dev);
-	struct spi_transfer xfer = {
-		.tx_buf = NULL,
-		.rx_buf = data->buffer,
-		.len = HSC_REG_MEASUREMENT_RD_SIZE,
-	};
 
 	msleep_interruptible(HSC_RESP_TIME_MS);
-	return spi_sync_transfer(spi, &xfer, 1);
+	return spi_read(spi, data->buffer, HSC_REG_MEASUREMENT_RD_SIZE);
 }
 
 static int hsc_spi_probe(struct spi_device *spi)
diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c
index 421e059d1f19..dcc87a9015e8 100644
--- a/drivers/iio/pressure/zpa2326.c
+++ b/drivers/iio/pressure/zpa2326.c
@@ -861,13 +861,13 @@ static int zpa2326_wait_oneshot_completion(const struct iio_dev   *indio_dev,
 					   struct zpa2326_private *private)
 {
 	unsigned int val;
-	long     timeout;
+	long time_left;
 
 	zpa2326_dbg(indio_dev, "waiting for one shot completion interrupt");
 
-	timeout = wait_for_completion_interruptible_timeout(
+	time_left = wait_for_completion_interruptible_timeout(
 		&private->data_ready, ZPA2326_CONVERSION_JIFFIES);
-	if (timeout > 0)
+	if (time_left > 0)
 		/*
 		 * Interrupt handler completed before timeout: return operation
 		 * status.
@@ -877,10 +877,10 @@ static int zpa2326_wait_oneshot_completion(const struct iio_dev   *indio_dev,
 	/* Clear all interrupts just to be sure. */
 	regmap_read(private->regmap, ZPA2326_INT_SOURCE_REG, &val);
 
-	if (!timeout) {
+	if (!time_left) {
 		/* Timed out. */
 		zpa2326_warn(indio_dev, "no one shot interrupt occurred (%ld)",
-			     timeout);
+			     time_left);
 		return -ETIME;
 	}
 
diff --git a/drivers/iio/temperature/ltc2983.c b/drivers/iio/temperature/ltc2983.c
index 39447c786af3..24d19f3c7292 100644
--- a/drivers/iio/temperature/ltc2983.c
+++ b/drivers/iio/temperature/ltc2983.c
@@ -16,6 +16,7 @@
 #include <linux/module.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
 
 #include <asm/byteorder.h>
@@ -657,7 +658,6 @@ ltc2983_thermocouple_new(const struct fwnode_handle *child, struct ltc2983_data
 			 const struct ltc2983_sensor *sensor)
 {
 	struct ltc2983_thermocouple *thermo;
-	struct fwnode_handle *ref;
 	u32 oc_current;
 	int ret;
 
@@ -704,7 +704,8 @@ ltc2983_thermocouple_new(const struct fwnode_handle *child, struct ltc2983_data
 		return ERR_PTR(-EINVAL);
 	}
 
-	ref = fwnode_find_reference(child, "adi,cold-junction-handle", 0);
+	struct fwnode_handle *ref __free(fwnode_handle) =
+		fwnode_find_reference(child, "adi,cold-junction-handle", 0);
 	if (IS_ERR(ref)) {
 		ref = NULL;
 	} else {
@@ -715,7 +716,7 @@ ltc2983_thermocouple_new(const struct fwnode_handle *child, struct ltc2983_data
 			 * the error right away.
 			 */
 			dev_err(&st->spi->dev, "Property reg must be given\n");
-			goto fail;
+			return ERR_PTR(ret);
 		}
 	}
 
@@ -726,22 +727,15 @@ ltc2983_thermocouple_new(const struct fwnode_handle *child, struct ltc2983_data
 		thermo->custom = __ltc2983_custom_sensor_new(st, child,
 							     propname, false,
 							     16384, true);
-		if (IS_ERR(thermo->custom)) {
-			ret = PTR_ERR(thermo->custom);
-			goto fail;
-		}
+		if (IS_ERR(thermo->custom))
+			return ERR_CAST(thermo->custom);
 	}
 
 	/* set common parameters */
 	thermo->sensor.fault_handler = ltc2983_thermocouple_fault_handler;
 	thermo->sensor.assign_chan = ltc2983_thermocouple_assign_chan;
 
-	fwnode_handle_put(ref);
 	return &thermo->sensor;
-
-fail:
-	fwnode_handle_put(ref);
-	return ERR_PTR(ret);
 }
 
 static struct ltc2983_sensor *
@@ -751,14 +745,14 @@ ltc2983_rtd_new(const struct fwnode_handle *child, struct ltc2983_data *st,
 	struct ltc2983_rtd *rtd;
 	int ret = 0;
 	struct device *dev = &st->spi->dev;
-	struct fwnode_handle *ref;
 	u32 excitation_current = 0, n_wires = 0;
 
 	rtd = devm_kzalloc(dev, sizeof(*rtd), GFP_KERNEL);
 	if (!rtd)
 		return ERR_PTR(-ENOMEM);
 
-	ref = fwnode_find_reference(child, "adi,rsense-handle", 0);
+	struct fwnode_handle *ref __free(fwnode_handle) =
+		fwnode_find_reference(child, "adi,rsense-handle", 0);
 	if (IS_ERR(ref)) {
 		dev_err(dev, "Property adi,rsense-handle missing or invalid");
 		return ERR_CAST(ref);
@@ -767,7 +761,7 @@ ltc2983_rtd_new(const struct fwnode_handle *child, struct ltc2983_data *st,
 	ret = fwnode_property_read_u32(ref, "reg", &rtd->r_sense_chan);
 	if (ret) {
 		dev_err(dev, "Property reg must be given\n");
-		goto fail;
+		return ERR_PTR(ret);
 	}
 
 	ret = fwnode_property_read_u32(child, "adi,number-of-wires", &n_wires);
@@ -788,8 +782,7 @@ ltc2983_rtd_new(const struct fwnode_handle *child, struct ltc2983_data *st,
 			break;
 		default:
 			dev_err(dev, "Invalid number of wires:%u\n", n_wires);
-			ret = -EINVAL;
-			goto fail;
+			return ERR_PTR(-EINVAL);
 		}
 	}
 
@@ -799,8 +792,7 @@ ltc2983_rtd_new(const struct fwnode_handle *child, struct ltc2983_data *st,
 			if (n_wires == 2 || n_wires == 3) {
 				dev_err(dev,
 					"Rotation not allowed for 2/3 Wire RTDs");
-				ret = -EINVAL;
-				goto fail;
+				return ERR_PTR(-EINVAL);
 			}
 			rtd->sensor_config |= LTC2983_RTD_C_ROTATE(1);
 		} else {
@@ -830,16 +822,14 @@ ltc2983_rtd_new(const struct fwnode_handle *child, struct ltc2983_data *st,
 				"Invalid rsense chann:%d to use in kelvin rsense",
 				rtd->r_sense_chan);
 
-			ret = -EINVAL;
-			goto fail;
+			return ERR_PTR(-EINVAL);
 		}
 
 		if (sensor->chan < min || sensor->chan > max) {
 			dev_err(dev, "Invalid chann:%d for the rtd config",
 				sensor->chan);
 
-			ret = -EINVAL;
-			goto fail;
+			return ERR_PTR(-EINVAL);
 		}
 	} else {
 		/* same as differential case */
@@ -847,8 +837,7 @@ ltc2983_rtd_new(const struct fwnode_handle *child, struct ltc2983_data *st,
 			dev_err(&st->spi->dev,
 				"Invalid chann:%d for RTD", sensor->chan);
 
-			ret = -EINVAL;
-			goto fail;
+			return ERR_PTR(-EINVAL);
 		}
 	}
 
@@ -857,10 +846,8 @@ ltc2983_rtd_new(const struct fwnode_handle *child, struct ltc2983_data *st,
 		rtd->custom = __ltc2983_custom_sensor_new(st, child,
 							  "adi,custom-rtd",
 							  false, 2048, false);
-		if (IS_ERR(rtd->custom)) {
-			ret = PTR_ERR(rtd->custom);
-			goto fail;
-		}
+		if (IS_ERR(rtd->custom))
+			return ERR_CAST(rtd->custom);
 	}
 
 	/* set common parameters */
@@ -902,18 +889,13 @@ ltc2983_rtd_new(const struct fwnode_handle *child, struct ltc2983_data *st,
 			dev_err(&st->spi->dev,
 				"Invalid value for excitation current(%u)",
 				excitation_current);
-			ret = -EINVAL;
-			goto fail;
+			return ERR_PTR(-EINVAL);
 		}
 	}
 
 	fwnode_property_read_u32(child, "adi,rtd-curve", &rtd->rtd_curve);
 
-	fwnode_handle_put(ref);
 	return &rtd->sensor;
-fail:
-	fwnode_handle_put(ref);
-	return ERR_PTR(ret);
 }
 
 static struct ltc2983_sensor *
@@ -922,7 +904,6 @@ ltc2983_thermistor_new(const struct fwnode_handle *child, struct ltc2983_data *s
 {
 	struct ltc2983_thermistor *thermistor;
 	struct device *dev = &st->spi->dev;
-	struct fwnode_handle *ref;
 	u32 excitation_current = 0;
 	int ret = 0;
 
@@ -930,7 +911,8 @@ ltc2983_thermistor_new(const struct fwnode_handle *child, struct ltc2983_data *s
 	if (!thermistor)
 		return ERR_PTR(-ENOMEM);
 
-	ref = fwnode_find_reference(child, "adi,rsense-handle", 0);
+	struct fwnode_handle *ref __free(fwnode_handle) =
+		fwnode_find_reference(child, "adi,rsense-handle", 0);
 	if (IS_ERR(ref)) {
 		dev_err(dev, "Property adi,rsense-handle missing or invalid");
 		return ERR_CAST(ref);
@@ -939,7 +921,7 @@ ltc2983_thermistor_new(const struct fwnode_handle *child, struct ltc2983_data *s
 	ret = fwnode_property_read_u32(ref, "reg", &thermistor->r_sense_chan);
 	if (ret) {
 		dev_err(dev, "rsense channel must be configured...\n");
-		goto fail;
+		return ERR_PTR(ret);
 	}
 
 	if (fwnode_property_read_bool(child, "adi,single-ended")) {
@@ -959,8 +941,7 @@ ltc2983_thermistor_new(const struct fwnode_handle *child, struct ltc2983_data *s
 		dev_err(&st->spi->dev,
 			"Invalid chann:%d for differential thermistor",
 			sensor->chan);
-		ret = -EINVAL;
-		goto fail;
+		return ERR_PTR(-EINVAL);
 	}
 
 	/* check custom sensor */
@@ -979,10 +960,8 @@ ltc2983_thermistor_new(const struct fwnode_handle *child, struct ltc2983_data *s
 								 propname,
 								 steinhart,
 								 64, false);
-		if (IS_ERR(thermistor->custom)) {
-			ret = PTR_ERR(thermistor->custom);
-			goto fail;
-		}
+		if (IS_ERR(thermistor->custom))
+			return ERR_CAST(thermistor->custom);
 	}
 	/* set common parameters */
 	thermistor->sensor.fault_handler = ltc2983_common_fault_handler;
@@ -1006,8 +985,7 @@ ltc2983_thermistor_new(const struct fwnode_handle *child, struct ltc2983_data *s
 			    LTC2983_SENSOR_THERMISTOR_STEINHART) {
 				dev_err(&st->spi->dev,
 					"Auto Range not allowed for custom sensors\n");
-				ret = -EINVAL;
-				goto fail;
+				return ERR_PTR(-EINVAL);
 			}
 			thermistor->excitation_current = 0x0c;
 			break;
@@ -1048,16 +1026,11 @@ ltc2983_thermistor_new(const struct fwnode_handle *child, struct ltc2983_data *s
 			dev_err(&st->spi->dev,
 				"Invalid value for excitation current(%u)",
 				excitation_current);
-			ret = -EINVAL;
-			goto fail;
+			return ERR_PTR(-EINVAL);
 		}
 	}
 
-	fwnode_handle_put(ref);
 	return &thermistor->sensor;
-fail:
-	fwnode_handle_put(ref);
-	return ERR_PTR(ret);
 }
 
 static struct ltc2983_sensor *
@@ -1350,8 +1323,7 @@ static irqreturn_t ltc2983_irq_handler(int irq, void *data)
 static int ltc2983_parse_fw(struct ltc2983_data *st)
 {
 	struct device *dev = &st->spi->dev;
-	struct fwnode_handle *child;
-	int ret = 0, chan = 0, channel_avail_mask = 0;
+	int ret, chan = 0, channel_avail_mask = 0;
 
 	device_property_read_u32(dev, "adi,mux-delay-config-us", &st->mux_delay_config);
 
@@ -1369,38 +1341,35 @@ static int ltc2983_parse_fw(struct ltc2983_data *st)
 		return -ENOMEM;
 
 	st->iio_channels = st->num_channels;
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		struct ltc2983_sensor sensor;
 
 		ret = fwnode_property_read_u32(child, "reg", &sensor.chan);
-		if (ret) {
-			dev_err(dev, "reg property must given for child nodes\n");
-			goto put_child;
-		}
+		if (ret)
+			return dev_err_probe(dev, ret,
+				"reg property must given for child nodes\n");
 
 		/* check if we have a valid channel */
 		if (sensor.chan < LTC2983_MIN_CHANNELS_NR ||
-		    sensor.chan > st->info->max_channels_nr) {
-			ret = -EINVAL;
-			dev_err(dev, "chan:%d must be from %u to %u\n", sensor.chan,
-				LTC2983_MIN_CHANNELS_NR, st->info->max_channels_nr);
-			goto put_child;
-		} else if (channel_avail_mask & BIT(sensor.chan)) {
-			ret = -EINVAL;
-			dev_err(dev, "chan:%d already in use\n", sensor.chan);
-			goto put_child;
-		}
+		    sensor.chan > st->info->max_channels_nr)
+			return dev_err_probe(dev, -EINVAL,
+					     "chan:%d must be from %u to %u\n",
+					     sensor.chan,
+					     LTC2983_MIN_CHANNELS_NR,
+					     st->info->max_channels_nr);
+
+		if (channel_avail_mask & BIT(sensor.chan))
+			return dev_err_probe(dev, -EINVAL,
+					     "chan:%d already in use\n",
+					     sensor.chan);
 
 		ret = fwnode_property_read_u32(child, "adi,sensor-type", &sensor.type);
-		if (ret) {
-			dev_err(dev,
+		if (ret)
+			return dev_err_probe(dev, ret,
 				"adi,sensor-type property must given for child nodes\n");
-			goto put_child;
-		}
 
 		dev_dbg(dev, "Create new sensor, type %u, chann %u",
-								sensor.type,
-								sensor.chan);
+			sensor.type, sensor.chan);
 
 		if (sensor.type >= LTC2983_SENSOR_THERMOCOUPLE &&
 		    sensor.type <= LTC2983_SENSOR_THERMOCOUPLE_CUSTOM) {
@@ -1427,17 +1396,15 @@ static int ltc2983_parse_fw(struct ltc2983_data *st)
 			   sensor.type == LTC2983_SENSOR_ACTIVE_TEMP) {
 			st->sensors[chan] = ltc2983_temp_new(child, st, &sensor);
 		} else {
-			dev_err(dev, "Unknown sensor type %d\n", sensor.type);
-			ret = -EINVAL;
-			goto put_child;
+			return dev_err_probe(dev, -EINVAL,
+					     "Unknown sensor type %d\n",
+					     sensor.type);
 		}
 
-		if (IS_ERR(st->sensors[chan])) {
-			dev_err(dev, "Failed to create sensor %ld",
-				PTR_ERR(st->sensors[chan]));
-			ret = PTR_ERR(st->sensors[chan]);
-			goto put_child;
-		}
+		if (IS_ERR(st->sensors[chan]))
+			return dev_err_probe(dev, PTR_ERR(st->sensors[chan]),
+					     "Failed to create sensor\n");
+
 		/* set generic sensor parameters */
 		st->sensors[chan]->chan = sensor.chan;
 		st->sensors[chan]->type = sensor.type;
@@ -1447,9 +1414,6 @@ static int ltc2983_parse_fw(struct ltc2983_data *st)
 	}
 
 	return 0;
-put_child:
-	fwnode_handle_put(child);
-	return ret;
 }
 
 static int ltc2983_eeprom_cmd(struct ltc2983_data *st, unsigned int cmd,
@@ -1634,6 +1598,10 @@ static int ltc2983_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
+	ret = devm_regulator_get_enable(&spi->dev, "vdd");
+	if (ret)
+		return ret;
+
 	gpio = devm_gpiod_get_optional(&st->spi->dev, "reset", GPIOD_OUT_HIGH);
 	if (IS_ERR(gpio))
 		return PTR_ERR(gpio);
diff --git a/drivers/iio/temperature/mcp9600.c b/drivers/iio/temperature/mcp9600.c
index 46845804292b..7a3eef5d5e75 100644
--- a/drivers/iio/temperature/mcp9600.c
+++ b/drivers/iio/temperature/mcp9600.c
@@ -52,7 +52,8 @@ static int mcp9600_read(struct mcp9600_data *data,
 
 	if (ret < 0)
 		return ret;
-	*val = ret;
+
+	*val = sign_extend32(ret, 15);
 
 	return 0;
 }