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is_sensor_enabled() checks if the sensors are enabled on this platform.
It is possible that the SoC might choose not to enable all the sensors
that the IP block is capable of supporting.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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We print a calibration failure message on -EPROBE_DEFER from
nvmem/qfprom as follows:
[ 3.003090] qcom-tsens 4a9000.thermal-sensor: version: 1.4
[ 3.005376] qcom-tsens 4a9000.thermal-sensor: tsens calibration failed
[ 3.113248] qcom-tsens 4a9000.thermal-sensor: version: 1.4
This confuses people when, in fact, calibration succeeds later when
nvmem/qfprom device is available. Don't print this message on a
-EPROBE_DEFER.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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As we add support for newer versions of the TSENS IP, the current
approach isn't scaling because registers and bitfields get moved around,
requiring platform-specific hacks in the code. By moving to regmap, we
can hide the register level differences away from the code.
Define a common set of registers and bit-fields that we care about
across the various tsens IP versions.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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tsens_get_temp() uses the name 'data' for the void pointer, use the same
in tsens_get_trend() for consistency.
Remove a stray space while we're at it.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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tmdev seems to imply that this is a device pointer when in fact it is
just private platform data for each tsens device. Rename it to priv
improve code readability.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Rename to tsens_priv to denote that it is private data for each tsens
instance.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Rename to tsens_plat_data to denote that it is platform-data passed in
at compile-time.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Registers have moved around across TSENS generations. For example, the
CTRL register was at offset 0x0 in the SROT region on msm8916 but is at
offset 0x4 in newer v2 based TSENS HW blocks.
Allow passing offsets of important registers so that we can continue to
use common functions.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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hw_id is dynamically allocated but not used anywhere. Get rid of dead
code.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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The TSENS drivers use a GPL-2.0 license. Replace with equivalent SPDX
tags and delete the full license text.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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SDM845 uses v2 of the TSENS IP block but the get_temp() function appears to
be identical across v2.x.y in code seen so far. We use the generic
get_temp() function defined as part of ops_generic_v2.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
Pull thermal SoC updates from Zhang Rui:
"Thermal SoC management updates:
- imx thermal driver now supports i.MX7 thermal sensor (Anson Huang)
- exynos thermal driver dropped support for exynos 5440 (Krzysztof
Kozlowski)
- rcar_thermal now supports r8a77995 (Yoshihiro Kaneko)
- rcar_gen3_thermal now supports r8a77965 (Niklas Söderlund)
- qcom-spmi-temp-alarm now supports GEN2 PMIC peripherals (David
Collins)
- uniphier thermal now supports UniPhier PXs3 (Kunihiko Hayashi)
- mediatek thermal now supports MT7622 SoC (Sean Wang)
- considerable refactoring of exynos driver (Bartlomiej
Zolnierkiewicz)
- small fixes all over the place on different drivers"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal: (50 commits)
thermal: qcom: tsens: Allow number of sensors to come from DT
thermal: tegra: soctherm: add const to struct thermal_cooling_device_ops
thermal: exynos: Reduce severity of too early temperature read
thermal: imx: Switch to SPDX identifier
thermal: qcom-spmi-temp-alarm: add support for GEN2 PMIC peripherals
thermal: ti-soc-thermal: fix incorrect entry in omap5430_adc_to_temp[]
thermal: rcar_thermal: add r8a77995 support
dt-bindings: thermal: rcar-thermal: add R8A77995 support
thermal: mediatek: use of_device_get_match_data()
thermal: exynos: remove trip reporting to user-space
thermal: exynos: remove unused defines for Exynos5433
thermal: exynos: cleanup code for enabling threshold interrupts
thermal: exynos: check return values of ->get_trip_[temp, hyst] methods
thermal: exynos: move trips setting to exynos_tmu_initialize()
thermal: exynos: set trips in ascending order in exynos7_tmu_initialize()
thermal: exynos: do not use trips structure directly in ->tmu_initialize
thermal: exynos: add exynos*_tmu_set_[trip,hyst]() helpers
thermal: exynos: move IRQs clearing to exynos_tmu_initialize()
thermal: exynos: clear IRQs later in exynos4412_tmu_initialize()
thermal: exynos: make ->tmu_initialize method void
...
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Replaces open-coded struct size calculations with struct_size() for
devm_*, f2fs_*, and sock_* allocations. Automatically generated (and
manually adjusted) from the following Coccinelle script:
// Direct reference to struct field.
@@
identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc";
expression HANDLE;
expression GFP;
identifier VAR, ELEMENT;
expression COUNT;
@@
- alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(*VAR->ELEMENT), GFP)
+ alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP)
// mr = kzalloc(sizeof(*mr) + m * sizeof(mr->map[0]), GFP_KERNEL);
@@
identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc";
expression HANDLE;
expression GFP;
identifier VAR, ELEMENT;
expression COUNT;
@@
- alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(VAR->ELEMENT[0]), GFP)
+ alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP)
// Same pattern, but can't trivially locate the trailing element name,
// or variable name.
@@
identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc";
expression HANDLE;
expression GFP;
expression SOMETHING, COUNT, ELEMENT;
@@
- alloc(HANDLE, sizeof(SOMETHING) + COUNT * sizeof(ELEMENT), GFP)
+ alloc(HANDLE, CHECKME_struct_size(&SOMETHING, ELEMENT, COUNT), GFP)
Signed-off-by: Kees Cook <keescook@chromium.org>
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For platforms that has multiple copies of the TSENS hardware block it's
necessary to be able to specify the number of sensors per block in DeviceTree.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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The newly added tsens-8916 driver produces warnings when CONFIG_PM
is disabled:
drivers/thermal/qcom/tsens.c:53:12: error: 'tsens_resume' defined but not used [-Werror=unused-function]
static int tsens_resume(struct device *dev)
^~~~~~~~~~~~
drivers/thermal/qcom/tsens.c:43:12: error: 'tsens_suspend' defined but not used [-Werror=unused-function]
static int tsens_suspend(struct device *dev)
^~~~~~~~~~~~~
This marks both functions __maybe_unused to let the compiler
know that they might be used in other configurations, without
adding ugly #ifdef logic.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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The .get_trend callback in struct thermal_zone_device_ops has
the prototype:
int (*get_trend) (struct thermal_zone_device *, int,
enum thermal_trend *);
whereas the .get_trend callback in struct thermal_zone_of_device_ops
has:
int (*get_trend)(void *, long *);
Streamline both prototypes and add the trip argument to the OF callback
aswell and use enum thermal_trend * instead of an integer pointer.
While the OF prototype may be the better one, this should be decided at
framework level and not on OF level.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: linux-pm@vger.kernel.org
Reviewed-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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The TSENS controller in 8996 family of SoCs is capable of converting the
ADC code outputs to real temperature values (in decidegree Celsius).
It can also be programmed to provide raw ADC code, but the secure software
on 8996 programs it to provide real temperatures and also does the needed
calibrations.
We check the valid bit to ensure valid data is read by the AHB master.
And the spec recommends the below algorithm to read data 3 consecutive
times, which takes care of the worst case delay taken to propagate the
updated data to the register.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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8960 family of SoCs have the TSENS device as part of GCC, hence
the driver probes the virtual child device created by GCC and
uses the parent to extract all DT properties and reuses the GCC
regmap.
Also GCC/TSENS are part of a domain thats not always ON.
Hence add .suspend and .resume hooks to save and restore some of
the inited register context.
Also 8960 family have some of the TSENS init sequence thats
required to be done by the HLOS driver (some later versions of TSENS
do not export these registers to non-secure world, and hence need
these initializations to be done by secure bootloaders)
8660 from the same family has just one sensor and hence some register
offset/layout differences which need special handling in the driver.
Based on the original code from Siddartha Mohanadoss, Stephen Boyd and
Narendran Rajan.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Add .calibrate support for 8974 family as part of tsens_ops.
Based on the original code by Siddartha Mohanadoss and Stephen Boyd.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Add support to calibrate sensors on 8916 family and also add common
functions to read temperature from sensors (This can be reused on
other SoCs having similar TSENS device)
The calibration data is read from eeprom using the generic nvmem
framework apis.
Based on the original code by Siddartha Mohanadoss and Stephen Boyd.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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TSENS is Qualcomms' thermal temperature sensor device. It
supports reading temperatures from multiple thermal sensors
present on various QCOM SoCs.
Calibration data is generally read from a non-volatile memory
(eeprom) device.
Add a skeleton driver with all the necessary abstractions so
a variety of qcom device families which support TSENS can
add driver extensions.
Also add the required device tree bindings which can be used
to describe the TSENS device in DT.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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Amit Kucheria
Linus Torvalds
Kees Cook
Bjorn Andersson
Arnd Bergmann
Sascha Hauer
Rajendra Nayak
