pwm: clps711x: Make use of devm_pwmchip_alloc() function

This prepares the pwm-clps711x 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/334e633bb8e4c26dc59883b068466387769b65f9.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

diff --git a/drivers/pwm/pwm-clps711x.c b/drivers/pwm/pwm-clps711x.c
index f3b4af7963bede8af3edcedcfe2b92c92e201ef2..c950e1dbd2b8e179f9412d1e39a49af6f8bd431e 100644 (file)
--- a/drivers/pwm/pwm-clps711x.c
+++ b/drivers/pwm/pwm-clps711x.c
@@ -12,7 +12,6 @@
 #include <linux/pwm.h>
 
 struct clps711x_chip {
-       struct pwm_chip chip;
        void __iomem *pmpcon;
        struct clk *clk;
        spinlock_t lock;
@@ -20,7 +19,7 @@ struct clps711x_chip {
 
 static inline struct clps711x_chip *to_clps711x_chip(struct pwm_chip *chip)
 {
-       return container_of(chip, struct clps711x_chip, chip);
+       return pwmchip_get_drvdata(chip);
 }
 
 static int clps711x_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
@@ -76,11 +75,13 @@ static const struct pwm_ops clps711x_pwm_ops = {
 
 static int clps711x_pwm_probe(struct platform_device *pdev)
 {
+       struct pwm_chip *chip;
        struct clps711x_chip *priv;
 
-       priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
-       if (!priv)
-               return -ENOMEM;
+       chip = devm_pwmchip_alloc(&pdev->dev, 2, sizeof(*priv));
+       if (IS_ERR(chip))
+               return PTR_ERR(chip);
+       priv = to_clps711x_chip(chip);
 
        priv->pmpcon = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(priv->pmpcon))
@@ -90,13 +91,11 @@ static int clps711x_pwm_probe(struct platform_device *pdev)
        if (IS_ERR(priv->clk))
                return PTR_ERR(priv->clk);
 
-       priv->chip.ops = &clps711x_pwm_ops;
-       priv->chip.dev = &pdev->dev;
-       priv->chip.npwm = 2;
+       chip->ops = &clps711x_pwm_ops;
 
        spin_lock_init(&priv->lock);
 
-       return devm_pwmchip_add(&pdev->dev, &priv->chip);
+       return devm_pwmchip_add(&pdev->dev, chip);
 }
 
 static const struct of_device_id __maybe_unused clps711x_pwm_dt_ids[] = {