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pwm: sprd: Provide a helper to cast a chip to driver data 

Similar to most other PWM drivers provide a static inline function to
calculate driver data from a given pwmchip.

Link: https://lore.kernel.org/r/20230929161918.2410424-8-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Uwe Kleine-König 2023-09-29 18:19:14 +02:00 committed by Thierry Reding
parent 4f9ab6902b
commit d8a2f6f26a
1 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/pwm/pwm-sprd.c
View File

@ -40,6 +40,11 @@ struct sprd_pwm_chip {
struct sprd_pwm_chn chn[SPRD_PWM_CHN_NUM];
};
static inline struct sprd_pwm_chip* sprd_pwm_from_chip(struct pwm_chip *chip)
{
return container_of(chip, struct sprd_pwm_chip, chip);
}
/*
* The list of clocks required by PWM channels, and each channel has 2 clocks:
* enable clock and pwm clock.
@ -69,8 +74,7 @@ static void sprd_pwm_write(struct sprd_pwm_chip *spc, u32 hwid,
static int sprd_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
struct pwm_state *state)
{
struct sprd_pwm_chip *spc =
container_of(chip, struct sprd_pwm_chip, chip);
struct sprd_pwm_chip *spc = sprd_pwm_from_chip(chip);
struct sprd_pwm_chn *chn = &spc->chn[pwm->hwpwm];
u32 val, duty, prescale;
u64 tmp;
@ -162,8 +166,7 @@ static int sprd_pwm_config(struct sprd_pwm_chip *spc, struct pwm_device *pwm,
static int sprd_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
const struct pwm_state *state)
{
struct sprd_pwm_chip *spc =
container_of(chip, struct sprd_pwm_chip, chip);
struct sprd_pwm_chip *spc = sprd_pwm_from_chip(chip);
struct sprd_pwm_chn *chn = &spc->chn[pwm->hwpwm];
struct pwm_state *cstate = &pwm->state;
int ret;