diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-14 12:32:44 +0300 |
|---|---|---|
| committer | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-22 16:39:24 +0300 |
| commit | 174821b7be22ed11659d6791c04b8aca13424ed9 (patch) | |
| tree | 2f20cecdc18c7c603d60c20899df416ee78df440 /drivers/pwm/pwm-stm32.c | |
| parent | e315bf700b404c3b1b2efce63cb93fca347a215c (diff) | |
| download | linux-174821b7be22ed11659d6791c04b8aca13424ed9.tar.xz | |
pwm: stm32: Make use of devm_pwmchip_alloc() function
This prepares the pwm-stm32 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/59e5dfff2b878cc8590e286572672e4f10e35380.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Diffstat (limited to 'drivers/pwm/pwm-stm32.c')
| -rw-r--r-- | drivers/pwm/pwm-stm32.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index 1440b706ee57..0c028d17c075 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -27,7 +27,6 @@ struct stm32_breakinput { }; struct stm32_pwm { - struct pwm_chip chip; struct mutex lock; /* protect pwm config/enable */ struct clk *clk; struct regmap *regmap; @@ -40,7 +39,7 @@ struct stm32_pwm { static inline struct stm32_pwm *to_stm32_pwm_dev(struct pwm_chip *chip) { - return container_of(chip, struct stm32_pwm, chip); + return pwmchip_get_drvdata(chip); } static u32 active_channels(struct stm32_pwm *dev) @@ -632,14 +631,16 @@ static int stm32_pwm_probe(struct platform_device *pdev) struct stm32_timers *ddata = dev_get_drvdata(pdev->dev.parent); struct pwm_chip *chip; struct stm32_pwm *priv; - unsigned int num_enabled; + unsigned int npwm, num_enabled; unsigned int i; int ret; - priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - chip = &priv->chip; + npwm = stm32_pwm_detect_channels(ddata->regmap, &num_enabled); + + chip = devm_pwmchip_alloc(dev, npwm, sizeof(*priv)); + if (IS_ERR(chip)) + return PTR_ERR(chip); + priv = to_stm32_pwm_dev(chip); mutex_init(&priv->lock); priv->regmap = ddata->regmap; @@ -655,9 +656,7 @@ static int stm32_pwm_probe(struct platform_device *pdev) stm32_pwm_detect_complementary(priv); - chip->dev = dev; chip->ops = &stm32pwm_ops; - chip->npwm = stm32_pwm_detect_channels(ddata->regmap, &num_enabled); /* Initialize clock refcount to number of enabled PWM channels. */ for (i = 0; i < num_enabled; i++) |