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pwm: sl28cpld: Make use of devm_pwmchip_alloc() function 

This prepares the pwm-sl28cpld 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.

Reviewed-by: Michael Walle <mwalle@kernel.org>
Link: https://lore.kernel.org/r/ee687086f7fc78264fac723f65ddc96cb7518c03.1707900770.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 10:32:33 +01:00
parent 554d9acae4
commit 57014f0726
1 changed files with 5 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/pwm/pwm-sl28cpld.c
View File

@ -81,14 +81,13 @@
regmap_write((priv)->regmap, (priv)->offset + (reg), (val)) regmap_write((priv)->regmap, (priv)->offset + (reg), (val))
struct sl28cpld_pwm { struct sl28cpld_pwm {
struct pwm_chip chip;
struct regmap *regmap; struct regmap *regmap;
u32 offset; u32 offset;
}; };
static inline struct sl28cpld_pwm *sl28cpld_pwm_from_chip(struct pwm_chip *chip) static inline struct sl28cpld_pwm *sl28cpld_pwm_from_chip(struct pwm_chip *chip)
{ {
return container_of(chip, struct sl28cpld_pwm, chip); return pwmchip_get_drvdata(chip);
} }
static int sl28cpld_pwm_get_state(struct pwm_chip *chip, static int sl28cpld_pwm_get_state(struct pwm_chip *chip,
@ -213,9 +212,10 @@ static int sl28cpld_pwm_probe(struct platform_device *pdev)
return -ENODEV; return -ENODEV;
} }
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 = sl28cpld_pwm_from_chip(chip);
priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); priv->regmap = dev_get_regmap(pdev->dev.parent, NULL);
if (!priv->regmap) { if (!priv->regmap) {
@ -231,10 +231,7 @@ static int sl28cpld_pwm_probe(struct platform_device *pdev)
} }
/* Initialize the pwm_chip structure */ /* Initialize the pwm_chip structure */
chip = &priv->chip;
chip->dev = &pdev->dev;
chip->ops = &sl28cpld_pwm_ops; chip->ops = &sl28cpld_pwm_ops;
chip->npwm = 1;
ret = devm_pwmchip_add(&pdev->dev, chip); ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret) { if (ret) {