Esempi in C++ (Cpp) per backlight_power_set

Esempio n. 1

File: 88pm860x_bl.c Progetto: MiniBlu/cm11_kernel_htc_msm8974a3ul

static int pm860x_backlight_set(struct backlight_device *bl, int brightness)
{
	struct pm860x_backlight_data *data = bl_get_data(bl);
	struct pm860x_chip *chip = data->chip;
	unsigned char value;
	int ret;

	if (brightness > MAX_BRIGHTNESS)
		value = MAX_BRIGHTNESS;
	else
		value = brightness;

	if (brightness)
		backlight_power_set(chip, data->port, 1);

	ret = pm860x_reg_write(data->i2c, wled_a(data->port), value);
	if (ret < 0)
		goto out;

	if ((data->current_brightness == 0) && brightness) {
		if (data->iset) {
			ret = pm860x_set_bits(data->i2c, wled_idc(data->port),
					      CURRENT_BITMASK, data->iset);
			if (ret < 0)
				goto out;
		}
		if (data->pwm) {
			ret = pm860x_set_bits(data->i2c, PM8606_PWM,
					      PM8606_PWM_FREQ_MASK, data->pwm);
			if (ret < 0)
				goto out;
		}
		if (brightness == MAX_BRIGHTNESS) {
			
			ret = pm860x_set_bits(data->i2c, wled_b(data->port),
					      PM8606_WLED_ON, PM8606_WLED_ON);
		}
	} else {
		if (brightness == MAX_BRIGHTNESS) {
			
			ret = pm860x_set_bits(data->i2c, wled_b(data->port),
					      PM8606_WLED_ON, PM8606_WLED_ON);
		} else {
			
			ret = pm860x_set_bits(data->i2c, wled_b(data->port),
					      PM8606_WLED_ON, 0);
		}
	}
	if (ret < 0)
		goto out;

	if (brightness == 0)
		backlight_power_set(chip, data->port, 0);

	dev_dbg(chip->dev, "set brightness %d\n", value);
	data->current_brightness = value;
	return 0;
out:
	dev_dbg(chip->dev, "set brightness %d failure with return "
		"value:%d\n", value, ret);
	return ret;
}

Esempio n. 2

File: 88pm860x_bl.c Progetto: 7799/linux

static int pm860x_backlight_set(struct backlight_device *bl, int brightness)
{
	struct pm860x_backlight_data *data = bl_get_data(bl);
	struct pm860x_chip *chip = data->chip;
	unsigned char value;
	int ret;

	if (brightness > MAX_BRIGHTNESS)
		value = MAX_BRIGHTNESS;
	else
		value = brightness;

	if (brightness)
		backlight_power_set(chip, data->port, 1);

	ret = pm860x_reg_write(data->i2c, data->reg_duty_cycle, value);
	if (ret < 0)
		goto out;

	if ((data->current_brightness == 0) && brightness) {
		if (data->iset) {
			ret = pm860x_set_bits(data->i2c, data->reg_current,
					      CURRENT_BITMASK, data->iset);
			if (ret < 0)
				goto out;
		}
		if (data->pwm) {
			ret = pm860x_set_bits(data->i2c, PM8606_PWM,
					      PM8606_PWM_FREQ_MASK, data->pwm);
			if (ret < 0)
				goto out;
		}
		if (brightness == MAX_BRIGHTNESS) {
			/* set WLED_ON bit as 100% */
			ret = pm860x_set_bits(data->i2c, data->reg_always_on,
					      PM8606_WLED_ON, PM8606_WLED_ON);
		}
	} else {
		if (brightness == MAX_BRIGHTNESS) {
			/* set WLED_ON bit as 100% */
			ret = pm860x_set_bits(data->i2c, data->reg_always_on,
					      PM8606_WLED_ON, PM8606_WLED_ON);
		} else {
			/* clear WLED_ON bit since it's not 100% */
			ret = pm860x_set_bits(data->i2c, data->reg_always_on,
					      PM8606_WLED_ON, 0);
		}
	}
	if (ret < 0)
		goto out;

	if (brightness == 0)
		backlight_power_set(chip, data->port, 0);

	dev_dbg(chip->dev, "set brightness %d\n", value);
	data->current_brightness = value;
	return 0;
out:
	dev_dbg(chip->dev, "set brightness %d failure with return value: %d\n",
		value, ret);
	return ret;
}