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>

diff --git a/drivers/pwm/pwm-sl28cpld.c b/drivers/pwm/pwm-sl28cpld.c
index 88b01ff..934378d 100644 (file)
--- a/drivers/pwm/pwm-sl28cpld.c
+++ b/drivers/pwm/pwm-sl28cpld.c
@@ -81,14 +81,13 @@
        regmap_write((priv)->regmap, (priv)->offset + (reg), (val))
 
 struct sl28cpld_pwm {
-       struct pwm_chip chip;
        struct regmap *regmap;
        u32 offset;
 };
 
 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,
@@ -213,9 +212,10 @@ static int sl28cpld_pwm_probe(struct platform_device *pdev)
                return -ENODEV;
        }
 
-       priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
-       if (!priv)
-               return -ENOMEM;
+       chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*priv));
+       if (IS_ERR(chip))
+               return PTR_ERR(chip);
+       priv = sl28cpld_pwm_from_chip(chip);
 
        priv->regmap = dev_get_regmap(pdev->dev.parent, NULL);
        if (!priv->regmap) {
@@ -231,10 +231,7 @@ static int sl28cpld_pwm_probe(struct platform_device *pdev)
        }
 
        /* Initialize the pwm_chip structure */
-       chip = &priv->chip;
-       chip->dev = &pdev->dev;
        chip->ops = &sl28cpld_pwm_ops;
-       chip->npwm = 1;
 
        ret = devm_pwmchip_add(&pdev->dev, chip);
        if (ret) {