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pwm: ep93xx: Prepare clock before using it

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Use clk_prepare_enable()/clk_disable_unprepare() in preparation for switch
to Common Clock Framework.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Alexander Sverdlin 2021-06-14 01:30:41 +02:00 committed by Thierry Reding
parent 72cce47fe8
commit b235f8a39f
1 changed files with 7 additions and 7 deletions
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14
drivers/pwm/pwm-ep93xx.c
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@ -68,7 +68,7 @@ static int ep93xx_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
if (state->polarity != pwm->state.polarity) {
if (enabled) {
writew(0x0, ep93xx_pwm->base + EP93XX_PWMx_ENABLE);
clk_disable(ep93xx_pwm->clk);
clk_disable_unprepare(ep93xx_pwm->clk);
enabled = false;
}
@ -76,7 +76,7 @@ static int ep93xx_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
* The clock needs to be enabled to access the PWM registers.
* Polarity can only be changed when the PWM is disabled.
*/
ret = clk_enable(ep93xx_pwm->clk);
ret = clk_prepare_enable(ep93xx_pwm->clk);
if (ret)
return ret;
@ -85,13 +85,13 @@ static int ep93xx_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
else
writew(0x0, ep93xx_pwm->base + EP93XX_PWMx_INVERT);
clk_disable(ep93xx_pwm->clk);
clk_disable_unprepare(ep93xx_pwm->clk);
}
if (!state->enabled) {
if (enabled) {
writew(0x0, ep93xx_pwm->base + EP93XX_PWMx_ENABLE);
clk_disable(ep93xx_pwm->clk);
clk_disable_unprepare(ep93xx_pwm->clk);
}
return 0;
@ -111,7 +111,7 @@ static int ep93xx_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
* Configuration can be changed at any time.
*/
if (!pwm_is_enabled(pwm)) {
ret = clk_enable(ep93xx_pwm->clk);
ret = clk_prepare_enable(ep93xx_pwm->clk);
if (ret)
return ret;
}
@ -142,14 +142,14 @@ static int ep93xx_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
}
if (!pwm_is_enabled(pwm))
clk_disable(ep93xx_pwm->clk);
clk_disable_unprepare(ep93xx_pwm->clk);
if (ret)
return ret;
}
if (!enabled) {
ret = clk_enable(ep93xx_pwm->clk);
ret = clk_prepare_enable(ep93xx_pwm->clk);
if (ret)
return ret;