Merge tag 'pwm/for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux

Pull pwm updates from Uwe Kleine-König:
 "Apart from the usual mix of new drivers (pwm-argon-fan-hat), adding
  support for variants to existing drivers, minor improvements to both
  drivers and docs, device tree documenation updates, the noteworthy
  changes are:

   - A hwmon companion driver to pwm-mc33xs2410 living in drivers/hwmon
     and acked by Guenter Roeck

   - chardev support for PWM devices. This leverages atomic PWM updates
     to userspace and at the same time simplifies and accelerates PWM
     configuration changes"

* tag 'pwm/for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: (35 commits)
  pwm: raspberrypi-poe: Fix spelling mistake "Firwmware" -> "Firmware"
  hwmon: add support for MC33XS2410 hardware monitoring
  pwm: mc33xs2410: add hwmon support
  pwm: img: Remove redundant pm_runtime_mark_last_busy() calls
  pwm: Expose PWM_WFHWSIZE in public header
  dt-bindings: pwm: Convert lpc32xx-pwm.txt to yaml format
  docs: pwm: Adapt Locking paragraph to reality
  pwm: twl-led: Drop driver local locking
  pwm: sun4i: Drop driver local locking
  pwm: sti: Drop driver local locking
  pwm: microchip-core: Drop driver local locking
  pwm: lpc18xx-sct: Drop driver local locking
  pwm: fsl-ftm: Drop driver local locking
  pwm: clps711x: Drop driver local locking
  pwm: atmel: Drop driver local locking
  pwm: argon-fan-hat: Add Argon40 Fan HAT support
  dt-bindings: pwm: argon40,fan-hat: Document Argon40 Fan HAT
  dt-bindings: vendor-prefixes: Document Argon40
  pwm: pwm-mediatek: Add support for PWM IP V3.0.2 in MT6991/MT8196
  pwm: pwm-mediatek: Pass PWM_CK_26M_SEL from platform data
  ...

1 files changed, 7 insertions, 42 deletions

diff --git a/drivers/pwm/pwm-twl-led.c b/drivers/pwm/pwm-twl-led.c
index 4b10a8dab312..a555cc3be4b3 100644
--- a/drivers/pwm/pwm-twl-led.c
+++ b/drivers/pwm/pwm-twl-led.c
@@ -61,10 +61,6 @@
 #define TWL6040_LED_MODE_OFF	0x02
 #define TWL6040_LED_MODE_MASK	0x03
 
-struct twl_pwmled_chip {
-	struct mutex mutex;
-};
-
 static inline struct twl_pwmled_chip *to_twl(struct pwm_chip *chip)
 {
 	return pwmchip_get_drvdata(chip);
@@ -106,15 +102,13 @@ static int twl4030_pwmled_config(struct pwm_chip *chip, struct pwm_device *pwm,
 
 static int twl4030_pwmled_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 {
-	struct twl_pwmled_chip *twl = to_twl(chip);
 	int ret;
 	u8 val;
 
-	mutex_lock(&twl->mutex);
 	ret = twl_i2c_read_u8(TWL4030_MODULE_LED, &val, TWL4030_LEDEN_REG);
 	if (ret < 0) {
 		dev_err(pwmchip_parent(chip), "%s: Failed to read LEDEN\n", pwm->label);
-		goto out;
+		return ret;
 	}
 
 	val |= TWL4030_LED_TOGGLE(pwm->hwpwm, TWL4030_LED_PINS);
@@ -123,23 +117,19 @@ static int twl4030_pwmled_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 	if (ret < 0)
 		dev_err(pwmchip_parent(chip), "%s: Failed to enable PWM\n", pwm->label);
 
-out:
-	mutex_unlock(&twl->mutex);
 	return ret;
 }
 
 static void twl4030_pwmled_disable(struct pwm_chip *chip,
 				   struct pwm_device *pwm)
 {
-	struct twl_pwmled_chip *twl = to_twl(chip);
 	int ret;
 	u8 val;
 
-	mutex_lock(&twl->mutex);
 	ret = twl_i2c_read_u8(TWL4030_MODULE_LED, &val, TWL4030_LEDEN_REG);
 	if (ret < 0) {
 		dev_err(pwmchip_parent(chip), "%s: Failed to read LEDEN\n", pwm->label);
-		goto out;
+		return;
 	}
 
 	val &= ~TWL4030_LED_TOGGLE(pwm->hwpwm, TWL4030_LED_PINS);
@@ -147,9 +137,6 @@ static void twl4030_pwmled_disable(struct pwm_chip *chip,
 	ret = twl_i2c_write_u8(TWL4030_MODULE_LED, val, TWL4030_LEDEN_REG);
 	if (ret < 0)
 		dev_err(pwmchip_parent(chip), "%s: Failed to disable PWM\n", pwm->label);
-
-out:
-	mutex_unlock(&twl->mutex);
 }
 
 static int twl4030_pwmled_apply(struct pwm_chip *chip, struct pwm_device *pwm,
@@ -209,16 +196,14 @@ static int twl6030_pwmled_config(struct pwm_chip *chip, struct pwm_device *pwm,
 
 static int twl6030_pwmled_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 {
-	struct twl_pwmled_chip *twl = to_twl(chip);
 	int ret;
 	u8 val;
 
-	mutex_lock(&twl->mutex);
 	ret = twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, TWL6030_LED_PWM_CTRL2);
 	if (ret < 0) {
 		dev_err(pwmchip_parent(chip), "%s: Failed to read PWM_CTRL2\n",
 			pwm->label);
-		goto out;
+		return ret;
 	}
 
 	val &= ~TWL6040_LED_MODE_MASK;
@@ -228,24 +213,20 @@ static int twl6030_pwmled_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 	if (ret < 0)
 		dev_err(pwmchip_parent(chip), "%s: Failed to enable PWM\n", pwm->label);
 
-out:
-	mutex_unlock(&twl->mutex);
 	return ret;
 }
 
 static void twl6030_pwmled_disable(struct pwm_chip *chip,
 				   struct pwm_device *pwm)
 {
-	struct twl_pwmled_chip *twl = to_twl(chip);
 	int ret;
 	u8 val;
 
-	mutex_lock(&twl->mutex);
 	ret = twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, TWL6030_LED_PWM_CTRL2);
 	if (ret < 0) {
 		dev_err(pwmchip_parent(chip), "%s: Failed to read PWM_CTRL2\n",
 			pwm->label);
-		goto out;
+		return;
 	}
 
 	val &= ~TWL6040_LED_MODE_MASK;
@@ -254,9 +235,6 @@ static void twl6030_pwmled_disable(struct pwm_chip *chip,
 	ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, val, TWL6030_LED_PWM_CTRL2);
 	if (ret < 0)
 		dev_err(pwmchip_parent(chip), "%s: Failed to disable PWM\n", pwm->label);
-
-out:
-	mutex_unlock(&twl->mutex);
 }
 
 static int twl6030_pwmled_apply(struct pwm_chip *chip, struct pwm_device *pwm,
@@ -287,16 +265,14 @@ static int twl6030_pwmled_apply(struct pwm_chip *chip, struct pwm_device *pwm,
 
 static int twl6030_pwmled_request(struct pwm_chip *chip, struct pwm_device *pwm)
 {
-	struct twl_pwmled_chip *twl = to_twl(chip);
 	int ret;
 	u8 val;
 
-	mutex_lock(&twl->mutex);
 	ret = twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, TWL6030_LED_PWM_CTRL2);
 	if (ret < 0) {
 		dev_err(pwmchip_parent(chip), "%s: Failed to read PWM_CTRL2\n",
 			pwm->label);
-		goto out;
+		return ret;
 	}
 
 	val &= ~TWL6040_LED_MODE_MASK;
@@ -306,23 +282,19 @@ static int twl6030_pwmled_request(struct pwm_chip *chip, struct pwm_device *pwm)
 	if (ret < 0)
 		dev_err(pwmchip_parent(chip), "%s: Failed to request PWM\n", pwm->label);
 
-out:
-	mutex_unlock(&twl->mutex);
 	return ret;
 }
 
 static void twl6030_pwmled_free(struct pwm_chip *chip, struct pwm_device *pwm)
 {
-	struct twl_pwmled_chip *twl = to_twl(chip);
 	int ret;
 	u8 val;
 
-	mutex_lock(&twl->mutex);
 	ret = twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, TWL6030_LED_PWM_CTRL2);
 	if (ret < 0) {
 		dev_err(pwmchip_parent(chip), "%s: Failed to read PWM_CTRL2\n",
 			pwm->label);
-		goto out;
+		return;
 	}
 
 	val &= ~TWL6040_LED_MODE_MASK;
@@ -331,9 +303,6 @@ static void twl6030_pwmled_free(struct pwm_chip *chip, struct pwm_device *pwm)
 	ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, val, TWL6030_LED_PWM_CTRL2);
 	if (ret < 0)
 		dev_err(pwmchip_parent(chip), "%s: Failed to free PWM\n", pwm->label);
-
-out:
-	mutex_unlock(&twl->mutex);
 }
 
 static const struct pwm_ops twl6030_pwmled_ops = {
@@ -345,7 +314,6 @@ static const struct pwm_ops twl6030_pwmled_ops = {
 static int twl_pwmled_probe(struct platform_device *pdev)
 {
 	struct pwm_chip *chip;
-	struct twl_pwmled_chip *twl;
 	unsigned int npwm;
 	const struct pwm_ops *ops;
 
@@ -357,15 +325,12 @@ static int twl_pwmled_probe(struct platform_device *pdev)
 		npwm = 1;
 	}
 
-	chip = devm_pwmchip_alloc(&pdev->dev, npwm, sizeof(*twl));
+	chip = devm_pwmchip_alloc(&pdev->dev, npwm, 0);
 	if (IS_ERR(chip))
 		return PTR_ERR(chip);
-	twl = to_twl(chip);
 
 	chip->ops = ops;
 
-	mutex_init(&twl->mutex);
-
 	return devm_pwmchip_add(&pdev->dev, chip);
 }