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authorBichao Zheng <bichao.zheng@amlogic.com>2019-04-01 20:18:17 +0200
committerThierry Reding <thierry.reding@gmail.com>2019-05-09 16:50:35 +0200
commita279345807e1e0ae79567a52cfdd9d30c9174a3c (patch)
tree9a3a3eddd9ff55ff888aacdf2093f6d2950a8d75 /drivers/pwm
parent51496e4446875726d50a5617a6e0e0dabbc2e6da (diff)
downloadlinux-a279345807e1e0ae79567a52cfdd9d30c9174a3c.tar.bz2
pwm: meson: Don't disable PWM when setting duty repeatedly
There is an abnormally low about 20ms,when setting duty repeatedly. Because setting the duty will disable PWM and then enable. Delete this operation now. Fixes: 211ed630753d2f ("pwm: Add support for Meson PWM Controller") Signed-off-by: Bichao Zheng <bichao.zheng@amlogic.com> [ Dropped code instead of hiding it behind a comment ] Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
-rw-r--r--drivers/pwm/pwm-meson.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index aaae48ab484e..2ab3d216b35a 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -314,11 +314,6 @@ static int meson_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
if (state->period != channel->state.period ||
state->duty_cycle != channel->state.duty_cycle ||
state->polarity != channel->state.polarity) {
- if (channel->state.enabled) {
- meson_pwm_disable(meson, pwm->hwpwm);
- channel->state.enabled = false;
- }
-
if (state->polarity != channel->state.polarity) {
if (state->polarity == PWM_POLARITY_NORMAL)
meson->inverter_mask |= BIT(pwm->hwpwm);