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>

diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index aaae48ab484ef0069c6b0bf957ef7fb7ab07df9d..2ab3d216b35a71db6cd115630a1882d3b11fd5e7 100644 (file)
--- 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);