[PATCH 3/4] pwm: meson: Simplify duplicated per-channel tracking
Uwe Kleine-König
u.kleine-koenig at pengutronix.de
Mon Nov 8 05:46:26 PST 2021
The driver tracks per-channel data via struct pwm_device::chip_data and
struct meson_pwm::channels[]. The latter holds the actual data, the former
is only a pointer to the latter. So simplify by using struct
meson_pwm::channels[] consistently.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
drivers/pwm/pwm-meson.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index 1fbe54a2abfe..908e314c7c00 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -141,12 +141,13 @@ static int meson_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
return err;
}
- return pwm_set_chip_data(pwm, channel);
+ return 0;
}
static void meson_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm)
{
- struct meson_pwm_channel *channel = pwm_get_chip_data(pwm);
+ struct meson_pwm *meson = to_meson_pwm(chip);
+ struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];
clk_disable_unprepare(channel->clk);
}
@@ -154,7 +155,7 @@ static void meson_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm)
static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm,
const struct pwm_state *state)
{
- struct meson_pwm_channel *channel = pwm_get_chip_data(pwm);
+ struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];
unsigned int duty, period, pre_div, cnt, duty_cnt;
unsigned long fin_freq;
@@ -217,7 +218,7 @@ static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm,
static void meson_pwm_enable(struct meson_pwm *meson, struct pwm_device *pwm)
{
- struct meson_pwm_channel *channel = pwm_get_chip_data(pwm);
+ struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];
struct meson_pwm_channel_data *channel_data;
unsigned long flags;
u32 value;
@@ -260,8 +261,8 @@ static void meson_pwm_disable(struct meson_pwm *meson, struct pwm_device *pwm)
static int meson_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
const struct pwm_state *state)
{
- struct meson_pwm_channel *channel = pwm_get_chip_data(pwm);
struct meson_pwm *meson = to_meson_pwm(chip);
+ struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];
int err = 0;
if (!state)
--
2.30.2
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