ARM: S5PV210: Add voltage consumer of WM8994 to the regulator framework

This patch add cose related to regulator. To control powre consumeption
have registered the voltage consumer of WM8994 to the regulator framework.

Additionally, I explain the constraints of the regulator of WM8994 codec.
All these consumer supply of WM8994 codec connected the regulator(VCC_1.8V)
on a circuit diagram. "VCC_1.8V" regulator is always enabled, because it is
used to many devices on Goni/Aquila board. This is required especially
when there are many devices physically attached to "VCC_1.8V" and some of
they did not "register" as consumers to "VCC_1.8V". "VCC_1.8V" might be
turned off by those who are registered while "unregistered" are still active

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 118 insertions, 0 deletions

diff --git a/arch/arm/mach-s5pv210/mach-aquila.c b/arch/arm/mach-s5pv210/mach-aquila.c
index cd441ef35bec..4b15549bd142 100644
--- a/arch/arm/mach-s5pv210/mach-aquila.c
+++ b/arch/arm/mach-s5pv210/mach-aquila.c
@@ -16,6 +16,8 @@
 #include <linux/i2c.h>
 #include <linux/i2c-gpio.h>
 #include <linux/mfd/max8998.h>
+#include <linux/mfd/wm8994/pdata.h>
+#include <linux/regulator/fixed.h>
 #include <linux/gpio_keys.h>
 #include <linux/input.h>
 #include <linux/gpio.h>
@@ -379,6 +381,119 @@ static struct max8998_platform_data aquila_max8998_pdata = {
 };
 #endif
 
+static struct regulator_consumer_supply wm8994_fixed_voltage0_supplies[] = {
+        {
+                .dev_name       = "5-001a",
+                .supply         = "DBVDD",
+        }, {
+                .dev_name       = "5-001a",
+                .supply         = "AVDD2",
+        }, {
+                .dev_name       = "5-001a",
+                .supply         = "CPVDD",
+        },
+};
+
+static struct regulator_consumer_supply wm8994_fixed_voltage1_supplies[] = {
+        {
+                .dev_name       = "5-001a",
+                .supply         = "SPKVDD1",
+        }, {
+                .dev_name       = "5-001a",
+                .supply         = "SPKVDD2",
+        },
+};
+
+static struct regulator_init_data wm8994_fixed_voltage0_init_data = {
+        .constraints = {
+                .always_on = 1,
+        },
+        .num_consumer_supplies  = ARRAY_SIZE(wm8994_fixed_voltage0_supplies),
+        .consumer_supplies      = wm8994_fixed_voltage0_supplies,
+};
+
+static struct regulator_init_data wm8994_fixed_voltage1_init_data = {
+        .constraints = {
+                .always_on = 1,
+        },
+        .num_consumer_supplies  = ARRAY_SIZE(wm8994_fixed_voltage1_supplies),
+        .consumer_supplies      = wm8994_fixed_voltage1_supplies,
+};
+
+static struct fixed_voltage_config wm8994_fixed_voltage0_config = {
+        .supply_name    = "VCC_1.8V_PDA",
+        .microvolts     = 1800000,
+        .gpio           = -EINVAL,
+        .init_data      = &wm8994_fixed_voltage0_init_data,
+};
+
+static struct fixed_voltage_config wm8994_fixed_voltage1_config = {
+        .supply_name    = "V_BAT",
+        .microvolts     = 3700000,
+        .gpio           = -EINVAL,
+        .init_data      = &wm8994_fixed_voltage1_init_data,
+};
+
+static struct platform_device wm8994_fixed_voltage0 = {
+        .name           = "reg-fixed-voltage",
+        .id             = 0,
+        .dev            = {
+                .platform_data  = &wm8994_fixed_voltage0_config,
+        },
+};
+
+static struct platform_device wm8994_fixed_voltage1 = {
+        .name           = "reg-fixed-voltage",
+        .id             = 1,
+        .dev            = {
+                .platform_data  = &wm8994_fixed_voltage1_config,
+        },
+};
+
+static struct regulator_consumer_supply wm8994_avdd1_supply = {
+        .dev_name       = "5-001a",
+        .supply         = "AVDD1",
+};
+
+static struct regulator_consumer_supply wm8994_dcvdd_supply = {
+        .dev_name       = "5-001a",
+        .supply         = "DCVDD",
+};
+
+static struct regulator_init_data wm8994_ldo1_data = {
+        .constraints    = {
+                .name           = "AVDD1_3.0V",
+                .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+        },
+        .num_consumer_supplies  = 1,
+        .consumer_supplies      = &wm8994_avdd1_supply,
+};
+
+static struct regulator_init_data wm8994_ldo2_data = {
+        .constraints    = {
+                .name           = "DCVDD_1.0V",
+        },
+        .num_consumer_supplies  = 1,
+        .consumer_supplies      = &wm8994_dcvdd_supply,
+};
+
+static struct wm8994_pdata wm8994_platform_data = {
+        /* configure gpio1 function: 0x0001(Logic level input/output) */
+        .gpio_defaults[0] = 0x0001,
+        /* configure gpio3/4/5/7 function for AIF2 voice */
+        .gpio_defaults[2] = 0x8100,
+        .gpio_defaults[3] = 0x8100,
+        .gpio_defaults[4] = 0x8100,
+        .gpio_defaults[6] = 0x0100,
+        /* configure gpio8/9/10/11 function for AIF3 BT */
+        .gpio_defaults[7] = 0x8100,
+        .gpio_defaults[8] = 0x0100,
+        .gpio_defaults[9] = 0x0100,
+        .gpio_defaults[10] = 0x0100,
+        .ldo[0] = { S5PV210_MP03(6), NULL, &wm8994_ldo1_data }, /* XM0FRNB_2 */
+        .ldo[1] = { 0, NULL, &wm8994_ldo2_data },
+};
+
 /* GPIO I2C PMIC */
 #define AP_I2C_GPIO_PMIC_BUS_4  4
 static struct i2c_gpio_platform_data aquila_i2c_gpio_pmic_data = {
@@ -423,6 +538,7 @@ static struct i2c_board_info i2c_gpio5_devs[] __initdata = {
         {
                 /* CS/ADDR = low 0x34 (FYI: high = 0x36) */
                 I2C_BOARD_INFO("wm8994", 0x1a),
+                .platform_data  = &wm8994_platform_data,
         },
 };
 
@@ -508,6 +624,8 @@ static struct platform_device *aquila_devices[] __initdata = {
         &s5p_device_fimc1,
         &s5p_device_fimc2,
         &s5pv210_device_iis0,
+        &wm8994_fixed_voltage0,
+        &wm8994_fixed_voltage1,
 };
 
 static void __init aquila_sound_init(void)