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backlight: lp855x: Switch to atomic PWM API

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Remove legacy PWM interface (pwm_config, pwm_enable, pwm_disable) and
replace it for the atomic PWM API.

Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20220714215334.78226-1-mairacanal@riseup.net
This commit is contained in:
Maíra Canal
2022-07-14 18:53:34 -03:00
committed by Lee Jones
parent 2654f59b53
commit f2ac0a8f8a
1 changed files with 9 additions and 12 deletions
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drivers/video/backlight/lp855x_bl.c
+9 -12
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@@ -218,9 +218,8 @@ err:
static void lp855x_pwm_ctrl(struct lp855x *lp, int br, int max_br) static void lp855x_pwm_ctrl(struct lp855x *lp, int br, int max_br)
{ {
unsigned int period = lp->pdata->period_ns;
unsigned int duty = br * period / max_br;
struct pwm_device *pwm; struct pwm_device *pwm;
struct pwm_state state;
/* request pwm device with the consumer name */ /* request pwm device with the consumer name */
if (!lp->pwm) { if (!lp->pwm) {
@@ -230,18 +229,16 @@ static void lp855x_pwm_ctrl(struct lp855x *lp, int br, int max_br)
lp->pwm = pwm; lp->pwm = pwm;
/* pwm_init_state(lp->pwm, &state);
* FIXME: pwm_apply_args() should be removed when switching to } else {
* the atomic PWM API. pwm_get_state(lp->pwm, &state);
*/
pwm_apply_args(pwm);
} }
pwm_config(lp->pwm, duty, period); state.period = lp->pdata->period_ns;
if (duty) state.duty_cycle = div_u64(br * state.period, max_br);
pwm_enable(lp->pwm); state.enabled = state.duty_cycle;
else
pwm_disable(lp->pwm); pwm_apply_state(lp->pwm, &state);
} }
static int lp855x_bl_update_status(struct backlight_device *bl) static int lp855x_bl_update_status(struct backlight_device *bl)