ARM: 5724/1: U300 AB3100 boardinfo v5

This defines regulator platform data and board power
regulator hogs for the ST-Ericsson U300 platform.

Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 248 insertions, 0 deletions

diff --git a/arch/arm/mach-u300/i2c.c b/arch/arm/mach-u300/i2c.c
index 10be1f888b2..7bc2503f644 100644
--- a/arch/arm/mach-u300/i2c.c
+++ b/arch/arm/mach-u300/i2c.c
@@ -9,13 +9,256 @@
  */
 #include <linux/kernel.h>
 #include <linux/i2c.h>
+#include <linux/mfd/ab3100.h>
+#include <linux/regulator/machine.h>
+#include <linux/amba/bus.h>
 #include <mach/irqs.h>
 
+/*
+ * Initial settings of ab3100 registers.
+ * Common for below LDO regulator settings are that
+ * bit 7-5 controls voltage. Bit 4 turns regulator ON(1) or OFF(0).
+ * Bit 3-2 controls sleep enable and bit 1-0 controls sleep mode.
+ */
+
+/* LDO_A 0x16: 2.75V, ON, SLEEP_A, SLEEP OFF GND */
+#define LDO_A_SETTING		0x16
+/* LDO_C 0x10: 2.65V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_C_SETTING		0x10
+/* LDO_D 0x10: 2.65V, ON, sleep mode not used */
+#define LDO_D_SETTING		0x10
+/* LDO_E 0x10: 1.8V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_E_SETTING		0x10
+/* LDO_E SLEEP 0x00: 1.8V, not used, SLEEP_A or B, not used */
+#define LDO_E_SLEEP_SETTING	0x00
+/* LDO_F 0xD0: 2.5V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_F_SETTING		0xD0
+/* LDO_G 0x00: 2.85V, OFF, SLEEP_A or B, SLEEP full power */
+#define LDO_G_SETTING		0x00
+/* LDO_H 0x18: 2.75V, ON, SLEEP_B, SLEEP full power */
+#define LDO_H_SETTING		0x18
+/* LDO_K 0x00: 2.75V, OFF, SLEEP_A or B, SLEEP full power */
+#define LDO_K_SETTING		0x00
+/* LDO_EXT 0x00: Voltage not set, OFF, not used, not used */
+#define LDO_EXT_SETTING		0x00
+/* BUCK 0x7D: 1.2V, ON, SLEEP_A and B, SLEEP low power */
+#define BUCK_SETTING	0x7D
+/* BUCK SLEEP 0xAC: 1.05V, Not used, SLEEP_A and B, Not used */
+#define BUCK_SLEEP_SETTING	0xAC
+
+static struct regulator_consumer_supply supply_ldo_c[] = {
+	{
+		.dev_name = "ab3100-codec",
+		.supply = "vaudio", /* Powers the codec */
+	},
+};
+
+/*
+ * This one needs to be a supply so we can turn it off
+ * in order to shut down the system.
+ */
+static struct regulator_consumer_supply supply_ldo_d[] = {
+	{
+		.dev = NULL,
+		.supply = "vana15", /* Powers the SoC (CPU etc) */
+	},
+};
+
+static struct regulator_consumer_supply supply_ldo_g[] = {
+	{
+		.dev_name = "mmci",
+		.supply = "vmmc", /* Powers MMC/SD card */
+	},
+};
+
+static struct regulator_consumer_supply supply_ldo_h[] = {
+	{
+		.dev_name = "xgam_pdi",
+		.supply = "vdisp", /* Powers camera, display etc */
+	},
+};
+
+static struct regulator_consumer_supply supply_ldo_k[] = {
+	{
+		.dev_name = "irda",
+		.supply = "vir", /* Power IrDA */
+	},
+};
+
+/*
+ * This is a placeholder for whoever wish to use the
+ * external power.
+ */
+static struct regulator_consumer_supply supply_ldo_ext[] = {
+	{
+		.dev = NULL,
+		.supply = "vext", /* External power */
+	},
+};
+
+/* Preset (hardware defined) voltages for these regulators */
+#define LDO_A_VOLTAGE 2750000
+#define LDO_C_VOLTAGE 2650000
+#define LDO_D_VOLTAGE 2650000
+
+static struct ab3100_platform_data ab3100_plf_data = {
+	.reg_constraints = {
+		/* LDO A routing and constraints */
+		{
+			.constraints = {
+				.name = "vrad",
+				.min_uV = LDO_A_VOLTAGE,
+				.max_uV = LDO_A_VOLTAGE,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.always_on = 1,
+				.boot_on = 1,
+			},
+		},
+		/* LDO C routing and constraints */
+		{
+			.constraints = {
+				.min_uV = LDO_C_VOLTAGE,
+				.max_uV = LDO_C_VOLTAGE,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_c),
+			.consumer_supplies = supply_ldo_c,
+		},
+		/* LDO D routing and constraints */
+		{
+			.constraints = {
+				.min_uV = LDO_D_VOLTAGE,
+				.max_uV = LDO_D_VOLTAGE,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				/*
+				 * Actually this is boot_on but we need
+				 * to reference count it externally to
+				 * be able to shut down the system.
+				 */
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_d),
+			.consumer_supplies = supply_ldo_d,
+		},
+		/* LDO E routing and constraints */
+		{
+			.constraints = {
+				.name = "vio",
+				.min_uV = 1800000,
+				.max_uV = 1800000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+				.always_on = 1,
+				.boot_on = 1,
+			},
+		},
+		/* LDO F routing and constraints */
+		{
+			.constraints = {
+				.name = "vana25",
+				.min_uV = 2500000,
+				.max_uV = 2500000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+				.always_on = 1,
+				.boot_on = 1,
+			},
+		},
+		/* LDO G routing and constraints */
+		{
+			.constraints = {
+				.min_uV = 1500000,
+				.max_uV = 2850000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_g),
+			.consumer_supplies = supply_ldo_g,
+		},
+		/* LDO H routing and constraints */
+		{
+			.constraints = {
+				.min_uV = 1200000,
+				.max_uV = 2750000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_h),
+			.consumer_supplies = supply_ldo_h,
+		},
+		/* LDO K routing and constraints */
+		{
+			.constraints = {
+				.min_uV = 1800000,
+				.max_uV = 2750000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_k),
+			.consumer_supplies = supply_ldo_k,
+		},
+		/* External regulator interface. No fixed voltage specified.
+		 * If we knew the voltage of the external regulator and it
+		 * was connected on the board, we could add the (fixed)
+		 * voltage for it here.
+		 */
+		{
+			.constraints = {
+				.min_uV = 0,
+				.max_uV = 0,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_STATUS,
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_ext),
+			.consumer_supplies = supply_ldo_ext,
+		},
+		/* Buck converter routing and constraints */
+		{
+			.constraints = {
+				.name = "vcore",
+				.min_uV = 1200000,
+				.max_uV = 1800000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+				.always_on = 1,
+				.boot_on = 1,
+			},
+		},
+	},
+	.reg_initvals = {
+		LDO_A_SETTING,
+		LDO_C_SETTING,
+		LDO_E_SETTING,
+		LDO_E_SLEEP_SETTING,
+		LDO_F_SETTING,
+		LDO_G_SETTING,
+		LDO_H_SETTING,
+		LDO_K_SETTING,
+		LDO_EXT_SETTING,
+		BUCK_SETTING,
+		BUCK_SLEEP_SETTING,
+		LDO_D_SETTING,
+	},
+};
+
 static struct i2c_board_info __initdata bus0_i2c_board_info[] = {
 	{
 		.type = "ab3100",
 		.addr = 0x48,
 		.irq = IRQ_U300_IRQ0_EXT,
+		.platform_data = &ab3100_plf_data,
 	},
 };
 
@@ -38,6 +281,11 @@ void __init u300_i2c_register_board_devices(void)
 {
 	i2c_register_board_info(0, bus0_i2c_board_info,
 				ARRAY_SIZE(bus0_i2c_board_info));
+	/*
+	 * This makes the core shut down all unused regulators
+	 * after all the initcalls have completed.
+	 */
+	regulator_has_full_constraints();
 	i2c_register_board_info(1, bus1_i2c_board_info,
 				ARRAY_SIZE(bus1_i2c_board_info));
 }