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pwm: apple: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-apple 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/34cf20a82ca07bb4ec0578b193daa5caed37825e.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 10:30:54 +01:00
parent 6357c2cd05
commit 5dd820cbfc
1 changed files with 9 additions and 9 deletions
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18
drivers/pwm/pwm-apple.c
View file

@ -32,14 +32,13 @@
#define APPLE_PWM_CTRL_OUTPUT_ENABLE BIT(14) #define APPLE_PWM_CTRL_OUTPUT_ENABLE BIT(14)
struct apple_pwm { struct apple_pwm {
struct pwm_chip chip;
void __iomem *base; void __iomem *base;
u64 clkrate; u64 clkrate;
}; };
static inline struct apple_pwm *to_apple_pwm(struct pwm_chip *chip) static inline struct apple_pwm *to_apple_pwm(struct pwm_chip *chip)
{ {
return container_of(chip, struct apple_pwm, chip); return pwmchip_get_drvdata(chip);
} }
static int apple_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, static int apple_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
@ -103,13 +102,16 @@ static const struct pwm_ops apple_pwm_ops = {
static int apple_pwm_probe(struct platform_device *pdev) static int apple_pwm_probe(struct platform_device *pdev)
{ {
struct pwm_chip *chip;
struct apple_pwm *fpwm; struct apple_pwm *fpwm;
struct clk *clk; struct clk *clk;
int ret; int ret;
fpwm = devm_kzalloc(&pdev->dev, sizeof(*fpwm), GFP_KERNEL); chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*fpwm));
if (!fpwm) if (IS_ERR(chip))
return -ENOMEM; return PTR_ERR(chip);
fpwm = to_apple_pwm(chip);
fpwm->base = devm_platform_ioremap_resource(pdev, 0); fpwm->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(fpwm->base)) if (IS_ERR(fpwm->base))
@ -129,11 +131,9 @@ static int apple_pwm_probe(struct platform_device *pdev)
if (fpwm->clkrate > NSEC_PER_SEC) if (fpwm->clkrate > NSEC_PER_SEC)
return dev_err_probe(&pdev->dev, -EINVAL, "pwm clock out of range"); return dev_err_probe(&pdev->dev, -EINVAL, "pwm clock out of range");
fpwm->chip.dev = &pdev->dev; chip->ops = &apple_pwm_ops;
fpwm->chip.npwm = 1;
fpwm->chip.ops = &apple_pwm_ops;
ret = devm_pwmchip_add(&pdev->dev, &fpwm->chip); ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret < 0) if (ret < 0)
return dev_err_probe(&pdev->dev, ret, "unable to add pwm chip"); return dev_err_probe(&pdev->dev, ret, "unable to add pwm chip");