ARM: EXYNOS4: configure MAX8903 secondary charger on NURI

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/arch/arm/mach-exynos4/mach-nuri.c b/arch/arm/mach-exynos4/mach-nuri.c
index d0999519e9ac..002549bf5260 100644
--- a/arch/arm/mach-exynos4/mach-nuri.c
+++ b/arch/arm/mach-exynos4/mach-nuri.c
@@ -16,6 +16,7 @@
 #include <linux/i2c-gpio.h>
 #include <linux/gpio_keys.h>
 #include <linux/gpio.h>
+#include <linux/power/max8903_charger.h>
 #include <linux/power/max17042_battery.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/fixed.h>
@@ -59,6 +60,7 @@
 
 enum fixed_regulator_id {
         FIXED_REG_ID_MMC = 0,
+        FIXED_REG_ID_MAX8903,
 };
 
 static struct s3c2410_uartcfg nuri_uartcfgs[] __initdata = {
@@ -981,10 +983,70 @@ static struct i2c_board_info i2c9_devs[] __initdata = {
         },
 };
 
+/* MAX8903 Secondary Charger */
+static struct regulator_consumer_supply supplies_max8903[] = {
+        REGULATOR_SUPPLY("vinchg2", "charger-manager.0"),
+};
+
+static struct regulator_init_data max8903_charger_en_data = {
+        .constraints = {
+                .name           = "VOUT_CHARGER",
+                .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+                .boot_on        = 1,
+        },
+        .num_consumer_supplies = ARRAY_SIZE(supplies_max8903),
+        .consumer_supplies = supplies_max8903,
+};
+
+static struct fixed_voltage_config max8903_charger_en = {
+        .supply_name = "VOUT_CHARGER",
+        .microvolts = 5000000, /* Assume 5VDC */
+        .gpio = EXYNOS4_GPY4(5), /* TA_EN negaged */
+        .enable_high = 0, /* Enable = Low */
+        .enabled_at_boot = 1,
+        .init_data = &max8903_charger_en_data,
+};
+
+static struct platform_device max8903_fixed_reg_dev = {
+        .name = "reg-fixed-voltage",
+        .id = FIXED_REG_ID_MAX8903,
+        .dev = { .platform_data = &max8903_charger_en },
+};
+
+static struct max8903_pdata nuri_max8903 = {
+        /*
+         * cen: don't control with the driver, let it be
+         * controlled by regulator above
+         */
+        .dok = EXYNOS4_GPX1(4), /* TA_nCONNECTED */
+        /* uok, usus: not connected */
+        .chg = EXYNOS4_GPE2(0), /* TA_nCHG */
+        /* flt: vcc_1.8V_pda */
+        .dcm = EXYNOS4_GPL0(1), /* CURR_ADJ */
+
+        .dc_valid = true,
+        .usb_valid = false, /* USB is not wired to MAX8903 */
+};
+
+static struct platform_device nuri_max8903_device = {
+        .name                   = "max8903-charger",
+        .dev                    = {
+                .platform_data  = &nuri_max8903,
+        },
+};
+
+static struct device *nuri_cm_devices[] = {
+        &s3c_device_i2c5.dev,
+        &s3c_device_adc.dev,
+        NULL, /* Reserved for UART */
+        NULL,
+};
+
 static void __init nuri_power_init(void)
 {
         int gpio;
         int irq_base = IRQ_GPIO_END + 1;
+        int ta_en = 0;
 
         nuri_max8997_pdata.irq_base = irq_base;
         irq_base += MAX8997_IRQ_NR;
@@ -998,6 +1060,20 @@ static void __init nuri_power_init(void)
         gpio_request(gpio, "FUEL_ALERT");
         s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(0xf));
         s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+
+        gpio = nuri_max8903.dok;
+        gpio_request(gpio, "TA_nCONNECTED");
+        s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(0xf));
+        s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+        ta_en = gpio_get_value(gpio) ? 0 : 1;
+
+        gpio = nuri_max8903.chg;
+        gpio_request(gpio, "TA_nCHG");
+        gpio_direction_input(gpio);
+
+        gpio = nuri_max8903.dcm;
+        gpio_request(gpio, "CURR_ADJ");
+        gpio_direction_output(gpio, ta_en);
 }
 
 /* USB EHCI */
@@ -1028,6 +1104,8 @@ static struct platform_device *nuri_devices[] __initdata = {
         &nuri_gpio_keys,
         &nuri_lcd_device,
         &nuri_backlight_device,
+        &max8903_fixed_reg_dev,
+        &nuri_max8903_device,
 };
 
 static void __init nuri_map_io(void)