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pwm: sifive: Make use of devm_pwmchip_alloc() function 

This prepares the pwm-sifive 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/30a4cacafe2c323f2531dd1c1126f0bf0fe5e03c.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 10:32:32 +01:00
parent c4f4af7d79
commit 554d9acae4
1 changed files with 6 additions and 8 deletions
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14
drivers/pwm/pwm-sifive.c
View File

@ -41,7 +41,6 @@
#define PWM_SIFIVE_DEFAULT_PERIOD 10000000 #define PWM_SIFIVE_DEFAULT_PERIOD 10000000
struct pwm_sifive_ddata { struct pwm_sifive_ddata {
struct pwm_chip chip;
struct device *parent; struct device *parent;
struct mutex lock; /* lock to protect user_count and approx_period */ struct mutex lock; /* lock to protect user_count and approx_period */
struct notifier_block notifier; struct notifier_block notifier;
@ -55,7 +54,7 @@ struct pwm_sifive_ddata {
static inline static inline
struct pwm_sifive_ddata *pwm_sifive_chip_to_ddata(struct pwm_chip *chip) struct pwm_sifive_ddata *pwm_sifive_chip_to_ddata(struct pwm_chip *chip)
{ {
return container_of(chip, struct pwm_sifive_ddata, chip); return pwmchip_get_drvdata(chip);
} }
static int pwm_sifive_request(struct pwm_chip *chip, struct pwm_device *pwm) static int pwm_sifive_request(struct pwm_chip *chip, struct pwm_device *pwm)
@ -231,15 +230,14 @@ static int pwm_sifive_probe(struct platform_device *pdev)
u32 val; u32 val;
unsigned int enabled_pwms = 0, enabled_clks = 1; unsigned int enabled_pwms = 0, enabled_clks = 1;
ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL); chip = devm_pwmchip_alloc(dev, 4, sizeof(*ddata));
if (!ddata) if (IS_ERR(chip))
return -ENOMEM; return PTR_ERR(chip);
ddata = pwm_sifive_chip_to_ddata(chip);
ddata->parent = dev;
mutex_init(&ddata->lock); mutex_init(&ddata->lock);
chip = &ddata->chip;
chip->dev = ddata->parent = dev;
chip->ops = &pwm_sifive_ops; chip->ops = &pwm_sifive_ops;
chip->npwm = 4;
ddata->regs = devm_platform_ioremap_resource(pdev, 0); ddata->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(ddata->regs)) if (IS_ERR(ddata->regs))