@@ -34,13 +34,12 @@
#define PIPGM_PWMC_POLARITY_MASK GENMASK(5, 5)
struct visconti_pwm_chip {
- struct pwm_chip chip;
void __iomem *base;
};
static inline struct visconti_pwm_chip *visconti_pwm_from_chip(struct pwm_chip *chip)
{
- return container_of(chip, struct visconti_pwm_chip, chip);
+ return pwmchip_get_drvdata(chip);
}
static int visconti_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
@@ -134,22 +133,22 @@ static const struct pwm_ops visconti_pwm_ops = {
static int visconti_pwm_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
+ struct pwm_chip *chip;
struct visconti_pwm_chip *priv;
int ret;
- priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
+ chip = devm_pwmchip_alloc(dev, 4, sizeof(*priv));
+ if (IS_ERR(chip))
+ return PTR_ERR(chip);
+ priv = visconti_pwm_from_chip(chip);
priv->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(priv->base))
return PTR_ERR(priv->base);
- priv->chip.dev = dev;
- priv->chip.ops = &visconti_pwm_ops;
- priv->chip.npwm = 4;
+ chip->ops = &visconti_pwm_ops;
- ret = devm_pwmchip_add(&pdev->dev, &priv->chip);
+ ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret < 0)
return dev_err_probe(&pdev->dev, ret, "Cannot register visconti PWM\n");
This prepares the pwm-visconti 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. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- drivers/pwm/pwm-visconti.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-)