Exemple #1
0
static int max17135_vcom_enable(struct regulator_dev *reg)
{
	struct max17135 *max17135 = rdev_get_drvdata(reg);

	/*
	 * Check to see if we need to set the VCOM voltage.
	 * Should only be done one time. And, we can
	 * only change vcom voltage if we have been enabled.
	 */
	if (!max17135->vcom_setup && max17135_is_power_good(max17135)) {
		max17135_vcom_set_voltage(reg,
			max17135->vcom_uV,
			max17135->vcom_uV,
			NULL);
		max17135->vcom_setup = true;
	}

	/* enable VCOM regulator output */
	if (max17135->pass_num == 1)
		gpio_set_value(max17135->gpio_pmic_vcom_ctrl, 1);
	else {
		unsigned int reg_val;

		max17135_reg_read(REG_MAX17135_ENABLE, &reg_val);
		reg_val &= ~BITFMASK(VCOM_ENABLE);
		reg_val |= BITFVAL(VCOM_ENABLE, 1); /* shift to correct bit */
		max17135_reg_write(REG_MAX17135_ENABLE, reg_val);
	}

	return 0;
}
Exemple #2
0
static int max17135_wait_power_good(struct max17135 *max17135)
{
	int i;

	for (i = 0; i < max17135->max_wait * 3; i++) {
		if (max17135_is_power_good(max17135))
			return 0;

		msleep(1);
	}
	return -ETIMEDOUT;
}