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pwm: stm32-lp: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-stm32-lp 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.

Link: https://lore.kernel.org/r/04af7b3d00bc932dd025200a3bf74527c29ca47a.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This commit is contained in:
Uwe Kleine-König 2024-02-14 10:32:48 +01:00
parent 0e89637a4f
commit 5d481e0742
1 changed files with 5 additions and 8 deletions
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13
drivers/pwm/pwm-stm32-lp.c
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@ -18,14 +18,13 @@
#include <linux/pwm.h> #include <linux/pwm.h>
struct stm32_pwm_lp { struct stm32_pwm_lp {
struct pwm_chip chip;
struct clk *clk; struct clk *clk;
struct regmap *regmap; struct regmap *regmap;
}; };
static inline struct stm32_pwm_lp *to_stm32_pwm_lp(struct pwm_chip *chip) static inline struct stm32_pwm_lp *to_stm32_pwm_lp(struct pwm_chip *chip)
{ {
return container_of(chip, struct stm32_pwm_lp, chip); return pwmchip_get_drvdata(chip);
} }
/* STM32 Low-Power Timer is preceded by a configurable power-of-2 prescaler */ /* STM32 Low-Power Timer is preceded by a configurable power-of-2 prescaler */
@ -200,16 +199,14 @@ static int stm32_pwm_lp_probe(struct platform_device *pdev)
struct pwm_chip *chip; struct pwm_chip *chip;
int ret; int ret;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*priv));
if (!priv) if (IS_ERR(chip))
return -ENOMEM; return PTR_ERR(chip);
priv = to_stm32_pwm_lp(chip);
priv->regmap = ddata->regmap; priv->regmap = ddata->regmap;
priv->clk = ddata->clk; priv->clk = ddata->clk;
chip = &priv->chip;
chip->dev = &pdev->dev;
chip->ops = &stm32_pwm_lp_ops; chip->ops = &stm32_pwm_lp_ops;
chip->npwm = 1;
ret = devm_pwmchip_add(&pdev->dev, chip); ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret < 0) if (ret < 0)