Re: [PATCH 2/2] hwmon: (aspeed-g6-pwm-tacho): Make use of devm_pwmchip_alloc() function

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On 3/18/24 09:09, Uwe Kleine-König wrote:
This prepares the aspeed-g6-pwm-tacho driver to further changes of the
pwm core outlined in the commit introducing devm_pwmchip_alloc(). There
is no intended semantical change and the driver should behave as before.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>

Acked-by: Guenter Roeck <linux@xxxxxxxxxxxx>

---
  drivers/hwmon/aspeed-g6-pwm-tach.c | 15 +++++++++------
  1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/hwmon/aspeed-g6-pwm-tach.c b/drivers/hwmon/aspeed-g6-pwm-tach.c
index 64def5e4cdf6..332c02216668 100644
--- a/drivers/hwmon/aspeed-g6-pwm-tach.c
+++ b/drivers/hwmon/aspeed-g6-pwm-tach.c
@@ -136,7 +136,6 @@ struct aspeed_pwm_tach_data {
  	struct clk *clk;
  	struct reset_control *reset;
  	unsigned long clk_rate;
-	struct pwm_chip chip;
  	bool tach_present[TACH_ASPEED_NR_TACHS];
  	u32 tach_divisor;
  };
@@ -144,7 +143,7 @@ struct aspeed_pwm_tach_data {
  static inline struct aspeed_pwm_tach_data *
  aspeed_pwm_chip_to_data(struct pwm_chip *chip)
  {
-	return container_of(chip, struct aspeed_pwm_tach_data, chip);
+	return pwmchip_get_drvdata(chip);
  }
static int aspeed_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
@@ -459,6 +458,7 @@ static int aspeed_pwm_tach_probe(struct platform_device *pdev)
  	int ret;
  	struct device_node *child;
  	struct aspeed_pwm_tach_data *priv;
+	struct pwm_chip *chip;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
  	if (!priv)
@@ -487,11 +487,14 @@ static int aspeed_pwm_tach_probe(struct platform_device *pdev)
  	if (ret)
  		return ret;
- priv->chip.dev = dev;
-	priv->chip.ops = &aspeed_pwm_ops;
-	priv->chip.npwm = PWM_ASPEED_NR_PWMS;
+	chip = devm_pwmchip_alloc(dev, PWM_ASPEED_NR_PWMS, 0);
+	if (IS_ERR(chip))
+		return PTR_ERR(chip);
- ret = devm_pwmchip_add(dev, &priv->chip);
+	pwmchip_set_drvdata(chip, priv);
+	chip->ops = &aspeed_pwm_ops;
+
+	ret = devm_pwmchip_add(dev, chip);
  	if (ret)
  		return dev_err_probe(dev, ret, "Failed to add PWM chip\n");





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