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path: root/drivers/leds/leds-pwm.c
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Diffstat (limited to 'drivers/leds/leds-pwm.c')
-rw-r--r--drivers/leds/leds-pwm.c41
1 files changed, 9 insertions, 32 deletions
diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index 5d3faae51..107e635ca 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -25,9 +25,8 @@
struct led_pwm_data {
struct led_classdev cdev;
struct pwm_device *pwm;
+ struct pwm_state pwmstate;
unsigned int active_low;
- unsigned int period;
- int duty;
};
struct led_pwm_priv {
@@ -35,37 +34,23 @@ struct led_pwm_priv {
struct led_pwm_data leds[0];
};
-static void __led_pwm_set(struct led_pwm_data *led_dat)
-{
- int new_duty = led_dat->duty;
-
- pwm_config(led_dat->pwm, new_duty, led_dat->period);
-
- if (new_duty == 0)
- pwm_disable(led_dat->pwm);
- else
- pwm_enable(led_dat->pwm);
-}
-
static int led_pwm_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct led_pwm_data *led_dat =
container_of(led_cdev, struct led_pwm_data, cdev);
unsigned int max = led_dat->cdev.max_brightness;
- unsigned long long duty = led_dat->period;
+ unsigned long long duty = led_dat->pwmstate.period;
duty *= brightness;
do_div(duty, max);
if (led_dat->active_low)
- duty = led_dat->period - duty;
-
- led_dat->duty = duty;
-
- __led_pwm_set(led_dat);
+ duty = led_dat->pwmstate.period - duty;
- return 0;
+ led_dat->pwmstate.duty_cycle = duty;
+ led_dat->pwmstate.enabled = true;
+ return pwm_apply_state(led_dat->pwm, &led_dat->pwmstate);
}
static inline size_t sizeof_pwm_leds_priv(int num_leds)
@@ -84,7 +69,6 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv,
struct led_pwm *led, struct device_node *child)
{
struct led_pwm_data *led_data = &priv->leds[priv->num_leds];
- struct pwm_args pargs;
int ret;
led_data->active_low = led->active_low;
@@ -108,17 +92,10 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv,
led_data->cdev.brightness_set_blocking = led_pwm_set;
- /*
- * FIXME: pwm_apply_args() should be removed when switching to the
- * atomic PWM API.
- */
- pwm_apply_args(led_data->pwm);
-
- pwm_get_args(led_data->pwm, &pargs);
+ pwm_init_state(led_data->pwm, &led_data->pwmstate);
- led_data->period = pargs.period;
- if (!led_data->period && (led->pwm_period_ns > 0))
- led_data->period = led->pwm_period_ns;
+ if (!led_data->pwmstate.period)
+ led_data->pwmstate.period = led->pwm_period_ns;
ret = led_classdev_register(dev, &led_data->cdev);
if (ret == 0) {