C++ (Cpp) compute_duty_cycle Beispiele

Beispiel #1

Datei: pwm_bl.c Projekt: acorn-marvell/brillo_pxa_kernel

static int pwm_backlight_update_status(struct backlight_device *bl)
{
	struct pwm_bl_data *pb = bl_get_data(bl);
	int brightness = bl->props.brightness;
	int duty_cycle;

	if (bl->props.power != FB_BLANK_UNBLANK ||
	    bl->props.fb_blank != FB_BLANK_UNBLANK ||
	    bl->props.state & BL_CORE_FBBLANK)
		brightness = 0;

	if (pb->notify)
		brightness = pb->notify(pb->dev, brightness);

	if (brightness > 0) {
		duty_cycle = compute_duty_cycle(pb, brightness);
		pwm_config(pb->pwm, duty_cycle, pb->period);
		pwm_backlight_power_on(pb, brightness);
	} else
		pwm_backlight_power_off(pb);

	if (pb->notify_after)
		pb->notify_after(pb->dev, brightness);

	return 0;
}

Beispiel #2

Datei: backlight-pwm.c Projekt: cherojeong/barebox

static int backlight_pwm_set(struct backlight_device *backlight,
		int brightness)
{
	struct pwm_backlight *pwm_backlight = container_of(backlight,
			struct pwm_backlight, backlight);

	pwm_config(pwm_backlight->pwm, compute_duty_cycle(pwm_backlight, brightness),
		   pwm_backlight->period);

	if (brightness)
		return backlight_pwm_enable(pwm_backlight);
	else
		return backlight_pwm_disable(pwm_backlight);
}