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Subject[PATCH v3 01/14] pwm: meson: unify the parameter list of meson_pwm_{enable,disable}
Date
This is a preparation for a future cleanup. Pass struct pwm_device
instead of passing the individual values required by each function as
these can be obtained for each struct pwm_device instance.

As a nice side-effect the driver now uses "switch (pwm->hwpwm)"
everywhere. Before some functions used "switch (id)" while others used
"switch (pwm->hwpwm)".

No functional changes.

Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
drivers/pwm/pwm-meson.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index 5fef7e925282..3fbbc4128ce8 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -183,15 +183,14 @@ static int meson_pwm_calc(struct meson_pwm *meson,
return 0;
}

-static void meson_pwm_enable(struct meson_pwm *meson,
- struct meson_pwm_channel *channel,
- unsigned int id)
+static void meson_pwm_enable(struct meson_pwm *meson, struct pwm_device *pwm)
{
+ struct meson_pwm_channel *channel = pwm_get_chip_data(pwm);
u32 value, clk_shift, clk_enable, enable;
unsigned int offset;
unsigned long flags;

- switch (id) {
+ switch (pwm->hwpwm) {
case 0:
clk_shift = MISC_A_CLK_DIV_SHIFT;
clk_enable = MISC_A_CLK_EN;
@@ -228,12 +227,12 @@ static void meson_pwm_enable(struct meson_pwm *meson,
spin_unlock_irqrestore(&meson->lock, flags);
}

-static void meson_pwm_disable(struct meson_pwm *meson, unsigned int id)
+static void meson_pwm_disable(struct meson_pwm *meson, struct pwm_device *pwm)
{
u32 value, enable;
unsigned long flags;

- switch (id) {
+ switch (pwm->hwpwm) {
case 0:
enable = MISC_A_EN;
break;
@@ -266,7 +265,7 @@ static int meson_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return -EINVAL;

if (!state->enabled) {
- meson_pwm_disable(meson, pwm->hwpwm);
+ meson_pwm_disable(meson, pwm);
channel->state.enabled = false;

return 0;
@@ -293,7 +292,7 @@ static int meson_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
}

if (state->enabled && !channel->state.enabled) {
- meson_pwm_enable(meson, channel, pwm->hwpwm);
+ meson_pwm_enable(meson, pwm);
channel->state.enabled = true;
}

--
2.22.0
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