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pwm: ep93xx: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-ep93xx 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/9420eeca1eb18fada4a15c897f60696b7b22b532.1707900770.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 10:31:23 +01:00
parent ecb4ec5ab8
commit 3f681ff7ba
1 changed files with 8 additions and 9 deletions
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17
drivers/pwm/pwm-ep93xx.c
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@ -36,12 +36,11 @@
struct ep93xx_pwm {
void __iomem *base;
struct clk *clk;
struct pwm_chip chip;
};
static inline struct ep93xx_pwm *to_ep93xx_pwm(struct pwm_chip *chip)
{
return container_of(chip, struct ep93xx_pwm, chip);
return pwmchip_get_drvdata(chip);
}
static int ep93xx_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
@ -163,12 +162,14 @@ static const struct pwm_ops ep93xx_pwm_ops = {
static int ep93xx_pwm_probe(struct platform_device *pdev)
{
struct pwm_chip *chip;
struct ep93xx_pwm *ep93xx_pwm;
int ret;
ep93xx_pwm = devm_kzalloc(&pdev->dev, sizeof(*ep93xx_pwm), GFP_KERNEL);
if (!ep93xx_pwm)
return -ENOMEM;
chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*ep93xx_pwm));
if (IS_ERR(chip))
return PTR_ERR(chip);
ep93xx_pwm = to_ep93xx_pwm(chip);
ep93xx_pwm->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(ep93xx_pwm->base))
@ -178,11 +179,9 @@ static int ep93xx_pwm_probe(struct platform_device *pdev)
if (IS_ERR(ep93xx_pwm->clk))
return PTR_ERR(ep93xx_pwm->clk);
ep93xx_pwm->chip.dev = &pdev->dev;
ep93xx_pwm->chip.ops = &ep93xx_pwm_ops;
ep93xx_pwm->chip.npwm = 1;
chip->ops = &ep93xx_pwm_ops;
ret = devm_pwmchip_add(&pdev->dev, &ep93xx_pwm->chip);
ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret < 0)
return ret;