1 files changed, 61 insertions, 2 deletions

diff --git a/arch/arm/mach-omap1/board-ams-delta.c b/arch/arm/mach-omap1/board-ams-delta.c
index 02b8e217bcbc..6573e1014908 100644
--- a/arch/arm/mach-omap1/board-ams-delta.c
+++ b/arch/arm/mach-omap1/board-ams-delta.c
@@ -526,6 +526,46 @@ static struct platform_device ams_delta_serio_device = {
 	.id		= PLATFORM_DEVID_NONE,
 };
 
+static struct regulator_consumer_supply keybrd_pwr_consumers[] = {
+	/*
+	 * Initialize supply .dev_name with NULL.  It will be replaced
+	 * with serio dev_name() as soon as the serio device is registered.
+	 */
+	REGULATOR_SUPPLY("vcc", NULL),
+};
+
+static struct regulator_init_data keybrd_pwr_initdata = {
+	.constraints		= {
+		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,
+	},
+	.num_consumer_supplies	= ARRAY_SIZE(keybrd_pwr_consumers),
+	.consumer_supplies	= keybrd_pwr_consumers,
+};
+
+static struct fixed_voltage_config keybrd_pwr_config = {
+	.supply_name		= "keybrd_pwr",
+	.microvolts		= 5000000,
+	.gpio			= AMS_DELTA_GPIO_PIN_KEYBRD_PWR,
+	.enable_high		= 1,
+	.init_data		= &keybrd_pwr_initdata,
+};
+
+static struct platform_device keybrd_pwr_device = {
+	.name	= "reg-fixed-voltage",
+	.id	= PLATFORM_DEVID_AUTO,
+	.dev	= {
+		.platform_data	= &keybrd_pwr_config,
+	},
+};
+
+static struct gpiod_lookup_table keybrd_pwr_gpio_table = {
+	.table = {
+		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_KEYBRD_PWR, NULL,
+			    GPIO_ACTIVE_HIGH),
+		{ },
+	},
+};
+
 static struct platform_device *ams_delta_devices[] __initdata = {
 	&latch1_gpio_device,
 	&latch2_gpio_device,
@@ -543,6 +583,7 @@ static struct platform_device *late_devices[] __initdata = {
 
 static struct gpiod_lookup_table *ams_delta_gpio_tables[] __initdata = {
 	&ams_delta_audio_gpio_table,
+	&keybrd_pwr_gpio_table,
 };
 
 static struct gpiod_lookup_table *late_gpio_tables[] __initdata = {
@@ -598,12 +639,30 @@ static void __init ams_delta_init(void)
 	platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
 
 	/*
-	 * As soon as devices have been registered, assign their dev_names
-	 * to respective GPIO lookup tables before they are added.
+	 * As soon as regulator consumers have been registered, assign their
+	 * dev_names to consumer supply entries of respective regulators.
+	 */
+	keybrd_pwr_consumers[0].dev_name =
+			dev_name(&ams_delta_serio_device.dev);
+
+	/*
+	 * Once consumer supply entries are populated with dev_names,
+	 * register regulator devices.  At this stage only the keyboard
+	 * power regulator has its consumer supply table fully populated.
+	 */
+	platform_device_register(&keybrd_pwr_device);
+
+	/*
+	 * As soon as GPIO consumers have been registered, assign
+	 * their dev_names to respective GPIO lookup tables.
 	 */
 	ams_delta_audio_gpio_table.dev_id =
 			dev_name(&ams_delta_audio_device.dev);
+	keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev);
 
+	/*
+	 * Once GPIO lookup tables are populated with dev_names, register them.
+	 */
 	gpiod_add_lookup_tables(ams_delta_gpio_tables,
 				ARRAY_SIZE(ams_delta_gpio_tables));