pwm: ntxec: Make use of devm_pwmchip_alloc() function

This prepares the pwm-ntxec 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/c0c9d6cb3a6662268e660f4f6c89b32268ecf019.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

diff --git a/drivers/pwm/pwm-ntxec.c b/drivers/pwm/pwm-ntxec.c
index 7860603..28d1c2e 100644 (file)
--- a/drivers/pwm/pwm-ntxec.c
+++ b/drivers/pwm/pwm-ntxec.c
@@ -25,12 +25,11 @@
 
 struct ntxec_pwm {
        struct ntxec *ec;
-       struct pwm_chip chip;
 };
 
 static struct ntxec_pwm *ntxec_pwm_from_chip(struct pwm_chip *chip)
 {
-       return container_of(chip, struct ntxec_pwm, chip);
+       return pwmchip_get_drvdata(chip);
 }
 
 #define NTXEC_REG_AUTO_OFF_HI  0xa1
@@ -141,16 +140,13 @@ static int ntxec_pwm_probe(struct platform_device *pdev)
 
        device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
 
-       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 = ntxec_pwm_from_chip(chip);
 
        priv->ec = ec;
-
-       chip = &priv->chip;
-       chip->dev = &pdev->dev;
        chip->ops = &ntxec_pwm_ops;
-       chip->npwm = 1;
 
        return devm_pwmchip_add(&pdev->dev, chip);
 }