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pwm: brcmstb: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-brcmstb 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/adf9cb04f5d84ae604e97d4dc0708ff3677d72d7.1707900770.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 10:31:09 +01:00
parent bf756bfd24
commit f3d1efd083
1 changed files with 8 additions and 9 deletions
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17
drivers/pwm/pwm-brcmstb.c
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@ -54,7 +54,6 @@
struct brcmstb_pwm { struct brcmstb_pwm {
void __iomem *base; void __iomem *base;
struct clk *clk; struct clk *clk;
struct pwm_chip chip;
}; };
static inline u32 brcmstb_pwm_readl(struct brcmstb_pwm *p, static inline u32 brcmstb_pwm_readl(struct brcmstb_pwm *p,
@ -77,7 +76,7 @@ static inline void brcmstb_pwm_writel(struct brcmstb_pwm *p, u32 value,
static inline struct brcmstb_pwm *to_brcmstb_pwm(struct pwm_chip *chip) static inline struct brcmstb_pwm *to_brcmstb_pwm(struct pwm_chip *chip)
{ {
return container_of(chip, struct brcmstb_pwm, chip); return pwmchip_get_drvdata(chip);
} }
/* /*
@ -230,12 +229,14 @@ MODULE_DEVICE_TABLE(of, brcmstb_pwm_of_match);
static int brcmstb_pwm_probe(struct platform_device *pdev) static int brcmstb_pwm_probe(struct platform_device *pdev)
{ {
struct pwm_chip *chip;
struct brcmstb_pwm *p; struct brcmstb_pwm *p;
int ret; int ret;
p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL); chip = devm_pwmchip_alloc(&pdev->dev, 2, sizeof(*p));
if (!p) if (IS_ERR(chip))
return -ENOMEM; return PTR_ERR(chip);
p = to_brcmstb_pwm(chip);
p->clk = devm_clk_get_enabled(&pdev->dev, NULL); p->clk = devm_clk_get_enabled(&pdev->dev, NULL);
if (IS_ERR(p->clk)) if (IS_ERR(p->clk))
@ -244,15 +245,13 @@ static int brcmstb_pwm_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, p); platform_set_drvdata(pdev, p);
p->chip.dev = &pdev->dev; chip->ops = &brcmstb_pwm_ops;
p->chip.ops = &brcmstb_pwm_ops;
p->chip.npwm = 2;
p->base = devm_platform_ioremap_resource(pdev, 0); p->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(p->base)) if (IS_ERR(p->base))
return PTR_ERR(p->base); return PTR_ERR(p->base);
ret = devm_pwmchip_add(&pdev->dev, &p->chip); ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret) if (ret)
return dev_err_probe(&pdev->dev, ret, "failed to add PWM chip\n"); return dev_err_probe(&pdev->dev, ret, "failed to add PWM chip\n");