ARM: S5PV210: Add MAX8998 PMIC support for Aquila

This patch adds required platform definitions for MAX8998 PMIC driver. Power
regulators for LDO and BUCK outputs has been defined as well as a simple
gpio-keys button for power key (to enable wakeup functionality with
external interrupt).

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[broonie@opensource.wolfsonmicro.com: For the regulator API usage]
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
[kgene.kim@samsung.com: minor title fix]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 325 insertions, 0 deletions

diff --git a/arch/arm/mach-s5pv210/mach-aquila.c b/arch/arm/mach-s5pv210/mach-aquila.c
index 44db0fc2505d..099261867e73 100644
--- a/arch/arm/mach-s5pv210/mach-aquila.c
+++ b/arch/arm/mach-s5pv210/mach-aquila.c
@@ -13,6 +13,12 @@
 #include <linux/init.h>
 #include <linux/serial_core.h>
 #include <linux/fb.h>
+#include <linux/i2c.h>
+#include <linux/i2c-gpio.h>
+#include <linux/mfd/max8998.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
+#include <linux/gpio.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -23,6 +29,7 @@
 #include <mach/regs-clock.h>
 #include <mach/regs-fb.h>
 
+#include <plat/gpio-cfg.h>
 #include <plat/regs-serial.h>
 #include <plat/s5pv210.h>
 #include <plat/devs.h>
@@ -122,7 +129,320 @@ static struct s3c_fb_platdata aquila_lcd_pdata __initdata = {
         .setup_gpio     = s5pv210_fb_gpio_setup_24bpp,
 };
 
+/* MAX8998 regulators */
+#if defined(CONFIG_REGULATOR_MAX8998) || defined(CONFIG_REGULATOR_MAX8998_MODULE)
+
+static struct regulator_init_data aquila_ldo2_data = {
+        .constraints    = {
+                .name           = "VALIVE_1.1V",
+                .min_uV         = 1100000,
+                .max_uV         = 1100000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+                .state_mem      = {
+                        .enabled = 1,
+                },
+        },
+};
+
+static struct regulator_init_data aquila_ldo3_data = {
+        .constraints    = {
+                .name           = "VUSB/MIPI_1.1V",
+                .min_uV         = 1100000,
+                .max_uV         = 1100000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo4_data = {
+        .constraints    = {
+                .name           = "VDAC_3.3V",
+                .min_uV         = 3300000,
+                .max_uV         = 3300000,
+                .apply_uV       = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo5_data = {
+        .constraints    = {
+                .name           = "VTF_2.8V",
+                .min_uV         = 2800000,
+                .max_uV         = 2800000,
+                .apply_uV       = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo6_data = {
+        .constraints    = {
+                .name           = "VCC_3.3V",
+                .min_uV         = 3300000,
+                .max_uV         = 3300000,
+                .apply_uV       = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo7_data = {
+        .constraints    = {
+                .name           = "VCC_3.0V",
+                .min_uV         = 3000000,
+                .max_uV         = 3000000,
+                .apply_uV       = 1,
+                .boot_on        = 1,
+                .always_on      = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo8_data = {
+        .constraints    = {
+                .name           = "VUSB/VADC_3.3V",
+                .min_uV         = 3300000,
+                .max_uV         = 3300000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo9_data = {
+        .constraints    = {
+                .name           = "VCC/VCAM_2.8V",
+                .min_uV         = 2800000,
+                .max_uV         = 2800000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo10_data = {
+        .constraints    = {
+                .name           = "VPLL_1.1V",
+                .min_uV         = 1100000,
+                .max_uV         = 1100000,
+                .apply_uV       = 1,
+                .boot_on        = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo11_data = {
+        .constraints    = {
+                .name           = "CAM_IO_2.8V",
+                .min_uV         = 2800000,
+                .max_uV         = 2800000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo12_data = {
+        .constraints    = {
+                .name           = "CAM_ISP_1.2V",
+                .min_uV         = 1200000,
+                .max_uV         = 1200000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo13_data = {
+        .constraints    = {
+                .name           = "CAM_A_2.8V",
+                .min_uV         = 2800000,
+                .max_uV         = 2800000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo14_data = {
+        .constraints    = {
+                .name           = "CAM_CIF_1.8V",
+                .min_uV         = 1800000,
+                .max_uV         = 1800000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo15_data = {
+        .constraints    = {
+                .name           = "CAM_AF_3.3V",
+                .min_uV         = 3300000,
+                .max_uV         = 3300000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo16_data = {
+        .constraints    = {
+                .name           = "VMIPI_1.8V",
+                .min_uV         = 1800000,
+                .max_uV         = 1800000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+        },
+};
+
+static struct regulator_init_data aquila_ldo17_data = {
+        .constraints    = {
+                .name           = "CAM_8M_1.8V",
+                .min_uV         = 1800000,
+                .max_uV         = 1800000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+        },
+};
+
+/* BUCK */
+static struct regulator_consumer_supply buck1_consumer[] = {
+        {       .supply = "vddarm", },
+};
+
+static struct regulator_consumer_supply buck2_consumer[] = {
+        {       .supply = "vddint", },
+};
+
+static struct regulator_init_data aquila_buck1_data = {
+        .constraints    = {
+                .name           = "VARM_1.2V",
+                .min_uV         = 1200000,
+                .max_uV         = 1200000,
+                .apply_uV       = 1,
+                .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
+                                  REGULATOR_CHANGE_STATUS,
+        },
+        .num_consumer_supplies  = ARRAY_SIZE(buck1_consumer),
+        .consumer_supplies      = buck1_consumer,
+};
+
+static struct regulator_init_data aquila_buck2_data = {
+        .constraints    = {
+                .name           = "VINT_1.2V",
+                .min_uV         = 1200000,
+                .max_uV         = 1200000,
+                .apply_uV       = 1,
+                .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
+                                  REGULATOR_CHANGE_STATUS,
+        },
+        .num_consumer_supplies  = ARRAY_SIZE(buck2_consumer),
+        .consumer_supplies      = buck2_consumer,
+};
+
+static struct regulator_init_data aquila_buck3_data = {
+        .constraints    = {
+                .name           = "VCC_1.8V",
+                .min_uV         = 1800000,
+                .max_uV         = 1800000,
+                .apply_uV       = 1,
+                .state_mem      = {
+                        .enabled = 1,
+                },
+        },
+};
+
+static struct regulator_init_data aquila_buck4_data = {
+        .constraints    = {
+                .name           = "CAM_CORE_1.2V",
+                .min_uV         = 1200000,
+                .max_uV         = 1200000,
+                .apply_uV       = 1,
+                .always_on      = 1,
+        },
+};
+
+static struct max8998_regulator_data aquila_regulators[] = {
+        { MAX8998_LDO2,  &aquila_ldo2_data },
+        { MAX8998_LDO3,  &aquila_ldo3_data },
+        { MAX8998_LDO4,  &aquila_ldo4_data },
+        { MAX8998_LDO5,  &aquila_ldo5_data },
+        { MAX8998_LDO6,  &aquila_ldo6_data },
+        { MAX8998_LDO7,  &aquila_ldo7_data },
+        { MAX8998_LDO8,  &aquila_ldo8_data },
+        { MAX8998_LDO9,  &aquila_ldo9_data },
+        { MAX8998_LDO10, &aquila_ldo10_data },
+        { MAX8998_LDO11, &aquila_ldo11_data },
+        { MAX8998_LDO12, &aquila_ldo12_data },
+        { MAX8998_LDO13, &aquila_ldo13_data },
+        { MAX8998_LDO14, &aquila_ldo14_data },
+        { MAX8998_LDO15, &aquila_ldo15_data },
+        { MAX8998_LDO16, &aquila_ldo16_data },
+        { MAX8998_LDO17, &aquila_ldo17_data },
+        { MAX8998_BUCK1, &aquila_buck1_data },
+        { MAX8998_BUCK2, &aquila_buck2_data },
+        { MAX8998_BUCK3, &aquila_buck3_data },
+        { MAX8998_BUCK4, &aquila_buck4_data },
+};
+
+static struct max8998_platform_data aquila_max8998_pdata = {
+        .num_regulators = ARRAY_SIZE(aquila_regulators),
+        .regulators     = aquila_regulators,
+};
+#endif
+
+/* GPIO I2C PMIC */
+#define AP_I2C_GPIO_PMIC_BUS_4  4
+static struct i2c_gpio_platform_data aquila_i2c_gpio_pmic_data = {
+        .sda_pin        = S5PV210_GPJ4(0),      /* XMSMCSN */
+        .scl_pin        = S5PV210_GPJ4(3),      /* XMSMIRQN */
+};
+
+static struct platform_device aquila_i2c_gpio_pmic = {
+        .name           = "i2c-gpio",
+        .id             = AP_I2C_GPIO_PMIC_BUS_4,
+        .dev            = {
+                .platform_data = &aquila_i2c_gpio_pmic_data,
+        },
+};
+
+static struct i2c_board_info i2c_gpio_pmic_devs[] __initdata = {
+#if defined(CONFIG_REGULATOR_MAX8998) || defined(CONFIG_REGULATOR_MAX8998_MODULE)
+        {
+                /* 0xCC when SRAD = 0 */
+                I2C_BOARD_INFO("max8998", 0xCC >> 1),
+                .platform_data = &aquila_max8998_pdata,
+        },
+#endif
+};
+
+/* PMIC Power button */
+static struct gpio_keys_button aquila_gpio_keys_table[] = {
+        {
+                .code           = KEY_POWER,
+                .gpio           = S5PV210_GPH2(6),
+                .desc           = "gpio-keys: KEY_POWER",
+                .type           = EV_KEY,
+                .active_low     = 1,
+                .wakeup         = 1,
+                .debounce_interval = 1,
+        },
+};
+
+static struct gpio_keys_platform_data aquila_gpio_keys_data = {
+        .buttons        = aquila_gpio_keys_table,
+        .nbuttons       = ARRAY_SIZE(aquila_gpio_keys_table),
+};
+
+static struct platform_device aquila_device_gpiokeys = {
+        .name = "gpio-keys",
+        .dev = {
+                .platform_data = &aquila_gpio_keys_data,
+        },
+};
+
+static void __init aquila_pmic_init(void)
+{
+        /* AP_PMIC_IRQ: EINT7 */
+        s3c_gpio_cfgpin(S5PV210_GPH0(7), S3C_GPIO_SFN(0xf));
+        s3c_gpio_setpull(S5PV210_GPH0(7), S3C_GPIO_PULL_UP);
+
+        /* nPower: EINT22 */
+        s3c_gpio_cfgpin(S5PV210_GPH2(6), S3C_GPIO_SFN(0xf));
+        s3c_gpio_setpull(S5PV210_GPH2(6), S3C_GPIO_PULL_UP);
+}
+
 static struct platform_device *aquila_devices[] __initdata = {
+        &aquila_i2c_gpio_pmic,
+        &aquila_device_gpiokeys,
         &s3c_device_fb,
         &s5pc110_device_onenand,
 };
@@ -136,6 +456,11 @@ static void __init aquila_map_io(void)
 
 static void __init aquila_machine_init(void)
 {
+        /* PMIC */
+        aquila_pmic_init();
+        i2c_register_board_info(AP_I2C_GPIO_PMIC_BUS_4, i2c_gpio_pmic_devs,
+                        ARRAY_SIZE(i2c_gpio_pmic_devs));
+
         /* FB */
         s3c_fb_set_platdata(&aquila_lcd_pdata);