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pwm: twl: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-twol 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/c65e796d46df71cd8d0d0941921997b9501f1cb3.1707900770.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 10:33:08 +01:00
parent 6a20d5ed0e
commit 12fa8803b6
1 changed files with 9 additions and 11 deletions
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20
drivers/pwm/pwm-twl.c
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@ -46,7 +46,6 @@
#define TWL6030_PWM_TOGGLE(pwm, x) ((x) << (pwm * 3)) #define TWL6030_PWM_TOGGLE(pwm, x) ((x) << (pwm * 3))
struct twl_pwm_chip { struct twl_pwm_chip {
struct pwm_chip chip;
struct mutex mutex; struct mutex mutex;
u8 twl6030_toggle3; u8 twl6030_toggle3;
u8 twl4030_pwm_mux; u8 twl4030_pwm_mux;
@ -54,7 +53,7 @@ struct twl_pwm_chip {
static inline struct twl_pwm_chip *to_twl(struct pwm_chip *chip) static inline struct twl_pwm_chip *to_twl(struct pwm_chip *chip)
{ {
return container_of(chip, struct twl_pwm_chip, chip); return pwmchip_get_drvdata(chip);
} }
static int twl_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, static int twl_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
@ -341,23 +340,22 @@ static const struct pwm_ops twl6030_pwm_ops = {
static int twl_pwm_probe(struct platform_device *pdev) static int twl_pwm_probe(struct platform_device *pdev)
{ {
struct pwm_chip *chip;
struct twl_pwm_chip *twl; struct twl_pwm_chip *twl;
twl = devm_kzalloc(&pdev->dev, sizeof(*twl), GFP_KERNEL); chip = devm_pwmchip_alloc(&pdev->dev, 2, sizeof(*twl));
if (!twl) if (IS_ERR(chip))
return -ENOMEM; return PTR_ERR(chip);
twl = to_twl(chip);
if (twl_class_is_4030()) if (twl_class_is_4030())
twl->chip.ops = &twl4030_pwm_ops; chip->ops = &twl4030_pwm_ops;
else else
twl->chip.ops = &twl6030_pwm_ops; chip->ops = &twl6030_pwm_ops;
twl->chip.dev = &pdev->dev;
twl->chip.npwm = 2;
mutex_init(&twl->mutex); mutex_init(&twl->mutex);
return devm_pwmchip_add(&pdev->dev, &twl->chip); return devm_pwmchip_add(&pdev->dev, chip);
} }
#ifdef CONFIG_OF #ifdef CONFIG_OF