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pwm: sprd: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-sprd 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.

Tested-by: Chunyan Zhang <zhang.lyra@gmail.com>
Link: https://lore.kernel.org/r/543213f44686ee72d8f88897bf2ca616e837ae44.1707900770.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 10:32:37 +01:00
parent aac1b805a6
commit f2075c0b1a
1 changed files with 8 additions and 9 deletions
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17
drivers/pwm/pwm-sprd.c
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@ -34,13 +34,12 @@ struct sprd_pwm_chn {
struct sprd_pwm_chip { struct sprd_pwm_chip {
void __iomem *base; void __iomem *base;
struct pwm_chip chip;
struct sprd_pwm_chn chn[SPRD_PWM_CHN_NUM]; struct sprd_pwm_chn chn[SPRD_PWM_CHN_NUM];
}; };
static inline struct sprd_pwm_chip* sprd_pwm_from_chip(struct pwm_chip *chip) static inline struct sprd_pwm_chip* sprd_pwm_from_chip(struct pwm_chip *chip)
{ {
return container_of(chip, struct sprd_pwm_chip, chip); return pwmchip_get_drvdata(chip);
} }
/* /*
@ -248,6 +247,7 @@ static int sprd_pwm_clk_init(struct device *dev,
static int sprd_pwm_probe(struct platform_device *pdev) static int sprd_pwm_probe(struct platform_device *pdev)
{ {
struct pwm_chip *chip;
struct sprd_pwm_chip *spc; struct sprd_pwm_chip *spc;
struct sprd_pwm_chn chn[SPRD_PWM_CHN_NUM]; struct sprd_pwm_chn chn[SPRD_PWM_CHN_NUM];
int ret, npwm; int ret, npwm;
@ -256,9 +256,10 @@ static int sprd_pwm_probe(struct platform_device *pdev)
if (npwm < 0) if (npwm < 0)
return npwm; return npwm;
spc = devm_kzalloc(&pdev->dev, sizeof(*spc), GFP_KERNEL); chip = devm_pwmchip_alloc(&pdev->dev, npwm, sizeof(*spc));
if (!spc) if (IS_ERR(chip))
return -ENOMEM; return PTR_ERR(chip);
spc = sprd_pwm_from_chip(chip);
spc->base = devm_platform_ioremap_resource(pdev, 0); spc->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(spc->base)) if (IS_ERR(spc->base))
@ -266,11 +267,9 @@ static int sprd_pwm_probe(struct platform_device *pdev)
memcpy(spc->chn, chn, sizeof(chn)); memcpy(spc->chn, chn, sizeof(chn));
spc->chip.dev = &pdev->dev; chip->ops = &sprd_pwm_ops;
spc->chip.ops = &sprd_pwm_ops;
spc->chip.npwm = npwm;
ret = devm_pwmchip_add(&pdev->dev, &spc->chip); ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret) if (ret)
dev_err(&pdev->dev, "failed to add PWM chip\n"); dev_err(&pdev->dev, "failed to add PWM chip\n");