ARM: mmp: refactored 5V regulator support using fixed-regulator

Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/arch/arm/mach-mmp/brownstone.c b/arch/arm/mach-mmp/brownstone.c
index 635c4004ebe1..7bb78fd5a2a6 100644
--- a/arch/arm/mach-mmp/brownstone.c
+++ b/arch/arm/mach-mmp/brownstone.c
@@ -17,6 +17,7 @@
 #include <linux/gpio.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/max8649.h>
+#include <linux/regulator/fixed.h>
 #include <linux/mfd/max8925.h>
 
 #include <asm/mach-types.h>
@@ -30,6 +31,8 @@
 
 #define BROWNSTONE_NR_IRQS      (IRQ_BOARD_START + 40)
 
+#define GPIO_5V_ENABLE          (89)
+
 static unsigned long brownstone_pin_config[] __initdata = {
         /* UART1 */
         GPIO29_UART1_RXD,
@@ -97,6 +100,9 @@ static unsigned long brownstone_pin_config[] __initdata = {
         GPIO111_MMC3_DAT0 | MFP_PULL_HIGH,
         GPIO112_MMC3_CMD | MFP_PULL_HIGH,
         GPIO151_MMC3_CLK,
+
+        /* 5V regulator */
+        GPIO89_GPIO,
 };
 
 static struct regulator_consumer_supply max8649_supply[] = {
@@ -123,6 +129,35 @@ static struct max8649_platform_data brownstone_max8649_info = {
         .regulator      = &max8649_init_data,
 };
 
+static struct regulator_consumer_supply brownstone_v_5vp_supplies[] = {
+        REGULATOR_SUPPLY("v_5vp", NULL),
+};
+
+static struct regulator_init_data brownstone_v_5vp_data = {
+        .constraints    = {
+                .valid_ops_mask         = REGULATOR_CHANGE_STATUS,
+        },
+        .num_consumer_supplies  = ARRAY_SIZE(brownstone_v_5vp_supplies),
+        .consumer_supplies      = brownstone_v_5vp_supplies,
+};
+
+static struct fixed_voltage_config brownstone_v_5vp = {
+        .supply_name            = "v_5vp",
+        .microvolts             = 5000000,
+        .gpio                   = GPIO_5V_ENABLE,
+        .enable_high            = 1,
+        .enabled_at_boot        = 1,
+        .init_data              = &brownstone_v_5vp_data,
+};
+
+static struct platform_device brownstone_v_5vp_device = {
+        .name           = "reg-fixed-voltage",
+        .id             = 1,
+        .dev = {
+                .platform_data = &brownstone_v_5vp,
+        },
+};
+
 static struct max8925_platform_data brownstone_max8925_info = {
         .irq_base               = IRQ_BOARD_START,
 };
@@ -154,6 +189,9 @@ static void __init brownstone_init(void)
         mmp2_add_uart(3);
         mmp2_add_twsi(1, NULL, ARRAY_AND_SIZE(brownstone_twsi1_info));
         mmp2_add_sdhost(0, &mmp2_sdh_platdata_mmc0); /* SD/MMC */
+
+        /* enable 5v regulator */
+        platform_device_register(&brownstone_v_5vp_device);
 }
 
 MACHINE_START(BROWNSTONE, "Brownstone Development Platform")