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pwm: visconti: Make use of devm_pwmchip_alloc() function

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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.

Link: https://lore.kernel.org/r/24e779de69365686bb004742cd8f07cbda131212.1707900770.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 10:33:11 +01:00
parent b860648da1
commit 7fe09324df
1 changed files with 8 additions and 9 deletions
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17
drivers/pwm/pwm-visconti.c
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@ -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");