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pwm: stm32: Change prototype of a helper to prepare further changes

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This prepares the driver for further changes that will make it harder to
determine the pwm_chip from a given stm32_pwm. To just not have to do
that, rework stm32_pwm_raw_capture() to take a pwm_chip.

Link: https://lore.kernel.org/r/33790c64563cb0434d7156d96f189c6037b3eb0b.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 10:32:41 +01:00
parent da665d25f4
commit fbde128940
1 changed files with 7 additions and 6 deletions
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13
drivers/pwm/pwm-stm32.c
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@ -90,11 +90,12 @@ static u32 active_channels(struct stm32_pwm *dev)
* - Period = t2 - t0
* - Duty cycle = t1 - t0
*/
static int stm32_pwm_raw_capture(struct stm32_pwm *priv, struct pwm_device *pwm,
static int stm32_pwm_raw_capture(struct pwm_chip *chip, struct pwm_device *pwm,
unsigned long tmo_ms, u32 *raw_prd,
u32 *raw_dty)
{
struct device *parent = priv->chip.dev->parent;
struct stm32_pwm *priv = to_stm32_pwm_dev(chip);
struct device *parent = pwmchip_parent(chip)->parent;
enum stm32_timers_dmas dma_id;
u32 ccen, ccr;
int ret;
@ -170,7 +171,7 @@ static int stm32_pwm_capture(struct pwm_chip *chip, struct pwm_device *pwm,
ret = clk_enable(priv->clk);
if (ret) {
dev_err(chip->dev, "failed to enable counter clock\n");
dev_err(pwmchip_parent(chip), "failed to enable counter clock\n");
goto unlock;
}
@ -208,7 +209,7 @@ static int stm32_pwm_capture(struct pwm_chip *chip, struct pwm_device *pwm,
TIM_CCER_CC12P : TIM_CCER_CC34P, pwm->hwpwm < 2 ?
TIM_CCER_CC2P : TIM_CCER_CC4P);
ret = stm32_pwm_raw_capture(priv, pwm, tmo_ms, &raw_prd, &raw_dty);
ret = stm32_pwm_raw_capture(chip, pwm, tmo_ms, &raw_prd, &raw_dty);
if (ret)
goto stop;
@ -229,7 +230,7 @@ static int stm32_pwm_capture(struct pwm_chip *chip, struct pwm_device *pwm,
/* 2nd measure with new scale */
psc /= scale;
regmap_write(priv->regmap, TIM_PSC, psc);
ret = stm32_pwm_raw_capture(priv, pwm, tmo_ms, &raw_prd,
ret = stm32_pwm_raw_capture(chip, pwm, tmo_ms, &raw_prd,
&raw_dty);
if (ret)
goto stop;
@ -257,7 +258,7 @@ static int stm32_pwm_capture(struct pwm_chip *chip, struct pwm_device *pwm,
FIELD_PREP(TIM_CCMR_IC1PSC, icpsc) |
FIELD_PREP(TIM_CCMR_IC2PSC, icpsc));
ret = stm32_pwm_raw_capture(priv, pwm, tmo_ms, &raw_prd, &raw_dty);
ret = stm32_pwm_raw_capture(chip, pwm, tmo_ms, &raw_prd, &raw_dty);
if (ret)
goto stop;