arch/arm/mach-u300/i2c.c - kernel/skids - Git at Google

 /*
  * arch/arm/mach-u300/i2c.c
  *
  * Copyright (C) 2009 ST-Ericsson AB
  * License terms: GNU General Public License (GPL) version 2
  *
  * Register board i2c devices
  * Author: Linus Walleij <linus.walleij@stericsson.com>
  */
 #include <linux/kernel.h>
 #include <linux/i2c.h>
 #include <linux/mfd/abx500.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

 #ifdef CONFIG_AB3100_CORE
 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,
 				.valid_ops_mask = REGULATOR_CHANGE_STATUS,
 				/*
 				 * 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,
 	},
 };
 #endif

 #ifdef CONFIG_AB3550_CORE
 static struct abx500_init_settings ab3550_init_settings[] = {
 	{
 		.bank = 0,
 		.reg = AB3550_IMR1,
 		.setting = 0xff
 	},
 	{
 		.bank = 0,
 		.reg = AB3550_IMR2,
 		.setting = 0xff
 	},
 	{
 		.bank = 0,
 		.reg = AB3550_IMR3,
 		.setting = 0xff
 	},
 	{
 		.bank = 0,
 		.reg = AB3550_IMR4,
 		.setting = 0xff
 	},
 	{
 		.bank = 0,
 		.reg = AB3550_IMR5,
 		/* The two most significant bits are not used */
 		.setting = 0x3f
 	},
 };

 static struct ab3550_platform_data ab3550_plf_data = {
 	.irq = {
 		.base = IRQ_AB3550_BASE,
 		.count = (IRQ_AB3550_END - IRQ_AB3550_BASE + 1),
 	},
 	.dev_data = {
 	},
 	.init_settings = ab3550_init_settings,
 	.init_settings_sz = ARRAY_SIZE(ab3550_init_settings),
 };
 #endif

 static struct i2c_board_info __initdata bus0_i2c_board_info[] = {
 #if defined(CONFIG_AB3550_CORE)
 	{
 		.type = "ab3550",
 		.addr = 0x4A,
 		.irq = IRQ_U300_IRQ0_EXT,
 		.platform_data = &ab3550_plf_data,
 	},
 #elif defined(CONFIG_AB3100_CORE)
 	{
 		.type = "ab3100",
 		.addr = 0x48,
 		.irq = IRQ_U300_IRQ0_EXT,
 		.platform_data = &ab3100_plf_data,
 	},
 #else
 	{ },
 #endif
 };

 static struct i2c_board_info __initdata bus1_i2c_board_info[] = {
 #ifdef CONFIG_MACH_U300_BS335
 	{
 		.type = "fwcam",
 		.addr = 0x10,
 	},
 	{
 		.type = "fwcam",
 		.addr = 0x5d,
 	},
 #else
 	{ },
 #endif
 };

 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));
 }
	/*
	* arch/arm/mach-u300/i2c.c
	*
	* Copyright (C) 2009 ST-Ericsson AB
	* License terms: GNU General Public License (GPL) version 2
	*
	* Register board i2c devices
	* Author: Linus Walleij <linus.walleij@stericsson.com>
	*/
	#include <linux/kernel.h>
	#include <linux/i2c.h>
	#include <linux/mfd/abx500.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

	#ifdef CONFIG_AB3100_CORE
	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,
	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
	/*
	* 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,
	},
	};
	#endif

	#ifdef CONFIG_AB3550_CORE
	static struct abx500_init_settings ab3550_init_settings[] = {
	{
	.bank = 0,
	.reg = AB3550_IMR1,
	.setting = 0xff
	},
	{
	.bank = 0,
	.reg = AB3550_IMR2,
	.setting = 0xff
	},
	{
	.bank = 0,
	.reg = AB3550_IMR3,
	.setting = 0xff
	},
	{
	.bank = 0,
	.reg = AB3550_IMR4,
	.setting = 0xff
	},
	{
	.bank = 0,
	.reg = AB3550_IMR5,
	/* The two most significant bits are not used */
	.setting = 0x3f
	},
	};

	static struct ab3550_platform_data ab3550_plf_data = {
	.irq = {
	.base = IRQ_AB3550_BASE,
	.count = (IRQ_AB3550_END - IRQ_AB3550_BASE + 1),
	},
	.dev_data = {
	},
	.init_settings = ab3550_init_settings,
	.init_settings_sz = ARRAY_SIZE(ab3550_init_settings),
	};
	#endif

	static struct i2c_board_info __initdata bus0_i2c_board_info[] = {
	#if defined(CONFIG_AB3550_CORE)
	{
	.type = "ab3550",
	.addr = 0x4A,
	.irq = IRQ_U300_IRQ0_EXT,
	.platform_data = &ab3550_plf_data,
	},
	#elif defined(CONFIG_AB3100_CORE)
	{
	.type = "ab3100",
	.addr = 0x48,
	.irq = IRQ_U300_IRQ0_EXT,
	.platform_data = &ab3100_plf_data,
	},
	#else
	{ },
	#endif
	};

	static struct i2c_board_info __initdata bus1_i2c_board_info[] = {
	#ifdef CONFIG_MACH_U300_BS335
	{
	.type = "fwcam",
	.addr = 0x10,
	},
	{
	.type = "fwcam",
	.addr = 0x5d,
	},
	#else
	{ },
	#endif
	};

	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));
	}