Commit d8a2f6f2 authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Thierry Reding
Browse files

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: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
parent 4f9ab690

drivers/pwm/pwm-sprd.c

+7 −4
Original line number Diff line number Diff line
@@ -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;