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pwm: berlin: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-berlin 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/52866502c96a80d1c30be003dc1f5a89a4d230cc.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 10:31:08 +01:00
parent 5874eaf869
commit bf756bfd24
1 changed files with 5 additions and 8 deletions
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13
drivers/pwm/pwm-berlin.c
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@ -49,7 +49,6 @@ struct berlin_pwm_channel {
}; };
struct berlin_pwm_chip { struct berlin_pwm_chip {
struct pwm_chip chip;
struct clk *clk; struct clk *clk;
void __iomem *base; void __iomem *base;
struct berlin_pwm_channel channel[BERLIN_PWM_NUMPWMS]; struct berlin_pwm_channel channel[BERLIN_PWM_NUMPWMS];
@ -57,7 +56,7 @@ struct berlin_pwm_chip {
static inline struct berlin_pwm_chip *to_berlin_pwm_chip(struct pwm_chip *chip) static inline struct berlin_pwm_chip *to_berlin_pwm_chip(struct pwm_chip *chip)
{ {
return container_of(chip, struct berlin_pwm_chip, chip); return pwmchip_get_drvdata(chip);
} }
static inline u32 berlin_pwm_readl(struct berlin_pwm_chip *bpc, static inline u32 berlin_pwm_readl(struct berlin_pwm_chip *bpc,
@ -202,9 +201,10 @@ static int berlin_pwm_probe(struct platform_device *pdev)
struct berlin_pwm_chip *bpc; struct berlin_pwm_chip *bpc;
int ret; int ret;
bpc = devm_kzalloc(&pdev->dev, sizeof(*bpc), GFP_KERNEL); chip = devm_pwmchip_alloc(&pdev->dev, BERLIN_PWM_NUMPWMS, sizeof(*bpc));
if (!bpc) if (IS_ERR(chip))
return -ENOMEM; return PTR_ERR(chip);
bpc = to_berlin_pwm_chip(chip);
bpc->base = devm_platform_ioremap_resource(pdev, 0); bpc->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(bpc->base)) if (IS_ERR(bpc->base))
@ -214,10 +214,7 @@ static int berlin_pwm_probe(struct platform_device *pdev)
if (IS_ERR(bpc->clk)) if (IS_ERR(bpc->clk))
return PTR_ERR(bpc->clk); return PTR_ERR(bpc->clk);
chip = &bpc->chip;
chip->dev = &pdev->dev;
chip->ops = &berlin_pwm_ops; chip->ops = &berlin_pwm_ops;
chip->npwm = BERLIN_PWM_NUMPWMS;
ret = devm_pwmchip_add(&pdev->dev, chip); ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret < 0) if (ret < 0)