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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-14 10:32:41 +0100 |
|---|---|---|
| committer | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-22 14:39:24 +0100 |
| commit | fbde128940991873847c92ed86a323adbce61ebb (patch) | |
| tree | acc75f3c5e992c1ee150d60adb0470f9b10ede71 | |
| parent | da665d25f4cbf82a847a9fa85eb8554ebc9e8bc1 (diff) | |
| download | linux-stable-fbde128940991873847c92ed86a323adbce61ebb.tar.gz linux-stable-fbde128940991873847c92ed86a323adbce61ebb.tar.bz2 linux-stable-fbde128940991873847c92ed86a323adbce61ebb.zip | |
pwm: stm32: Change prototype of a helper to prepare further changes
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>
| -rw-r--r-- | drivers/pwm/pwm-stm32.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index 202114c00ad3..ec15bc51d930 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -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; |