diff options
| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2020-03-30 16:57:14 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-03-31 09:48:34 +0200 |
| commit | 83affc1a6c5e13349d7ea34bd787568aa1c872ff (patch) | |
| tree | aa26ee10d703a5ea575af79046699909aaa4d4ea /drivers/led | |
| parent | 91912a0d5576441db1a4c9a03d309258bd49f149 (diff) | |
| download | barebox-83affc1a6c5e13349d7ea34bd787568aa1c872ff.tar.gz barebox-83affc1a6c5e13349d7ea34bd787568aa1c872ff.tar.xz | |
led: pwm: use new pwm_apply_state API
To support PWM_POLARITY_INVERTED for PWM LEDs, we need to to use the
apply API. Do so.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/led')
| -rw-r--r-- | drivers/led/led-pwm.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/led/led-pwm.c b/drivers/led/led-pwm.c index 4935572ec2..19d9d4d48a 100644 --- a/drivers/led/led-pwm.c +++ b/drivers/led/led-pwm.c @@ -29,22 +29,27 @@ struct pwmled { bool active_low; struct led led; struct pwm_device *pwm; - uint32_t period; }; static void led_pwm_set(struct led *led, unsigned int brightness) { struct pwmled *pwmled = container_of(led, struct pwmled, led); - unsigned long long duty = pwmled->period; + unsigned long long duty; + struct pwm_state state; unsigned int max = pwmled->led.max_value; - duty *= brightness; + pwm_get_state(pwmled->pwm, &state); + + duty = state.period_ns * brightness; do_div(duty, max); if (pwmled->active_low) - duty = pwmled->period - duty; + duty = state.period_ns - duty; + + state.p_enable = true; + state.duty_ns = duty; - pwm_config(pwmled->pwm, duty, pwmled->period); + pwm_apply_state(pwmled->pwm, &state); } static int led_pwm_of_probe(struct device_d *dev) @@ -68,13 +73,11 @@ static int led_pwm_of_probe(struct device_d *dev) if (ret) return ret; - pwmled->period = pwm_get_period(pwmled->pwm); pwmled->active_low = of_property_read_bool(child, "active-low"); pwmled->led.set = led_pwm_set; led_pwm_set(&pwmled->led, 0); - pwm_enable(pwmled->pwm); ret = led_register(&pwmled->led); if (ret) |