static void gpio_init(void)
{
/* Set up the I2C busses. */
exynos_pinmux_i2c0();
exynos_pinmux_i2c1();
exynos_pinmux_i2c2();
exynos_pinmux_i2c3();
exynos_pinmux_i2c4();
exynos_pinmux_i2c7();
/* Set up the GPIOs used to arbitrate for I2C bus 4. */
gpio_set_pull(GPIO_F03, GPIO_PULL_NONE);
gpio_set_pull(GPIO_E04, GPIO_PULL_NONE);
gpio_direction_output(GPIO_F03, 1);
gpio_direction_input(GPIO_E04);
/* Set up the GPIO used to enable the audio codec. */
gpio_set_pull(GPIO_X17, GPIO_PULL_NONE);
gpio_set_pull(GPIO_X15, GPIO_PULL_NONE);
gpio_direction_output(GPIO_X17, 1);
gpio_direction_output(GPIO_X15, 1);
/* Set up the I2S busses. */
exynos_pinmux_i2s0();
exynos_pinmux_i2s1();
}
static void setup_power(int is_resume)
{
int error = 0;
power_init();
if (is_resume) {
return;
}
/* Initialize I2C bus to configure PMIC. */
exynos_pinmux_i2c0();
i2c_init(0, I2C_0_SPEED, 0x00);
printk(BIOS_DEBUG, "%s: Setting up PMIC...\n", __func__);
/*
* We're using CR1616 coin cell battery that is non-rechargeable
* battery. But, BBCHOSTEN bit of the BBAT Charger Register in
* MAX77686 is enabled by default for charging coin cell.
*
* Also, we cannot meet the coin cell reverse current spec. in UL
* standard if BBCHOSTEN bit is enabled.
*
* Disable Coin BATT Charging
*/
error = max77686_disable_backup_batt(PMIC_BUS);
error |= max77686_volsetting(PMIC_BUS, PMIC_BUCK2, VDD_ARM_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_BUCK3, VDD_INT_UV,
REG_ENABLE, MAX77686_UV);
error |= max77686_volsetting(PMIC_BUS, PMIC_BUCK1, VDD_MIF_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_BUCK4, VDD_G3D_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_LDO2, VDD_LDO2_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_LDO3, VDD_LDO3_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_LDO5, VDD_LDO5_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_LDO10, VDD_LDO10_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_enable_32khz_cp(PMIC_BUS);
if (error) {
printk(BIOS_CRIT, "%s: PMIC error: %#x\n", __func__, error);
die("Failed to intialize PMIC.\n");
}
}