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path: root/drivers/i2c/busses/i2c-imx.c
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Diffstat (limited to 'drivers/i2c/busses/i2c-imx.c')
-rw-r--r--drivers/i2c/busses/i2c-imx.c62
1 files changed, 5 insertions, 57 deletions
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 88a053987403..d6ba93fc7fee 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -212,10 +212,6 @@ struct imx_i2c_struct {
const struct imx_i2c_hwdata *hwdata;
struct i2c_bus_recovery_info rinfo;
- struct pinctrl *pinctrl;
- struct pinctrl_state *pinctrl_pins_default;
- struct pinctrl_state *pinctrl_pins_gpio;
-
struct imx_i2c_dma *dma;
struct i2c_client *slave;
enum i2c_slave_event last_slave_event;
@@ -1357,24 +1353,6 @@ static int i2c_imx_xfer_atomic(struct i2c_adapter *adapter,
return result;
}
-static void i2c_imx_prepare_recovery(struct i2c_adapter *adap)
-{
- struct imx_i2c_struct *i2c_imx;
-
- i2c_imx = container_of(adap, struct imx_i2c_struct, adapter);
-
- pinctrl_select_state(i2c_imx->pinctrl, i2c_imx->pinctrl_pins_gpio);
-}
-
-static void i2c_imx_unprepare_recovery(struct i2c_adapter *adap)
-{
- struct imx_i2c_struct *i2c_imx;
-
- i2c_imx = container_of(adap, struct imx_i2c_struct, adapter);
-
- pinctrl_select_state(i2c_imx->pinctrl, i2c_imx->pinctrl_pins_default);
-}
-
/*
* We switch SCL and SDA to their GPIO function and do some bitbanging
* for bus recovery. These alternative pinmux settings can be
@@ -1385,43 +1363,13 @@ static void i2c_imx_unprepare_recovery(struct i2c_adapter *adap)
static int i2c_imx_init_recovery_info(struct imx_i2c_struct *i2c_imx,
struct platform_device *pdev)
{
- struct i2c_bus_recovery_info *rinfo = &i2c_imx->rinfo;
-
- i2c_imx->pinctrl = devm_pinctrl_get(&pdev->dev);
- if (!i2c_imx->pinctrl) {
- dev_info(&pdev->dev, "pinctrl unavailable, bus recovery not supported\n");
- return 0;
- }
- if (IS_ERR(i2c_imx->pinctrl)) {
- dev_info(&pdev->dev, "can't get pinctrl, bus recovery not supported\n");
- return PTR_ERR(i2c_imx->pinctrl);
- }
-
- i2c_imx->pinctrl_pins_default = pinctrl_lookup_state(i2c_imx->pinctrl,
- PINCTRL_STATE_DEFAULT);
- i2c_imx->pinctrl_pins_gpio = pinctrl_lookup_state(i2c_imx->pinctrl,
- "gpio");
- rinfo->sda_gpiod = devm_gpiod_get_optional(&pdev->dev, "sda", GPIOD_IN);
- rinfo->scl_gpiod = devm_gpiod_get(&pdev->dev, "scl", GPIOD_OUT_HIGH_OPEN_DRAIN);
-
- if (PTR_ERR(rinfo->sda_gpiod) == -EPROBE_DEFER ||
- PTR_ERR(rinfo->scl_gpiod) == -EPROBE_DEFER) {
- return -EPROBE_DEFER;
- } else if (IS_ERR(rinfo->sda_gpiod) ||
- IS_ERR(rinfo->scl_gpiod) ||
- IS_ERR(i2c_imx->pinctrl_pins_default) ||
- IS_ERR(i2c_imx->pinctrl_pins_gpio)) {
- dev_dbg(&pdev->dev, "recovery information incomplete\n");
- return 0;
- }
+ struct i2c_bus_recovery_info *bri = &i2c_imx->rinfo;
- dev_dbg(&pdev->dev, "using scl%s for recovery\n",
- rinfo->sda_gpiod ? ",sda" : "");
+ bri->pinctrl = devm_pinctrl_get(&pdev->dev);
+ if (IS_ERR(bri->pinctrl))
+ return PTR_ERR(bri->pinctrl);
- rinfo->prepare_recovery = i2c_imx_prepare_recovery;
- rinfo->unprepare_recovery = i2c_imx_unprepare_recovery;
- rinfo->recover_bus = i2c_generic_scl_recovery;
- i2c_imx->adapter.bus_recovery_info = rinfo;
+ i2c_imx->adapter.bus_recovery_info = bri;
return 0;
}