Linus Walleij | 6be2a0c | 2009-08-13 21:42:01 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-u300/i2c.c |
| 3 | * |
| 4 | * Copyright (C) 2009 ST-Ericsson AB |
| 5 | * License terms: GNU General Public License (GPL) version 2 |
| 6 | * |
| 7 | * Register board i2c devices |
| 8 | * Author: Linus Walleij <linus.walleij@stericsson.com> |
| 9 | */ |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/i2c.h> |
Linus Walleij | 812f9e9 | 2010-05-01 18:26:07 +0200 | [diff] [blame] | 12 | #include <linux/mfd/abx500.h> |
Linus Walleij | 3d81277 | 2009-09-23 15:45:02 +0100 | [diff] [blame] | 13 | #include <linux/regulator/machine.h> |
| 14 | #include <linux/amba/bus.h> |
Linus Walleij | 6be2a0c | 2009-08-13 21:42:01 +0100 | [diff] [blame] | 15 | #include <mach/irqs.h> |
| 16 | |
Linus Walleij | 3d81277 | 2009-09-23 15:45:02 +0100 | [diff] [blame] | 17 | /* |
| 18 | * Initial settings of ab3100 registers. |
| 19 | * Common for below LDO regulator settings are that |
| 20 | * bit 7-5 controls voltage. Bit 4 turns regulator ON(1) or OFF(0). |
| 21 | * Bit 3-2 controls sleep enable and bit 1-0 controls sleep mode. |
| 22 | */ |
| 23 | |
| 24 | /* LDO_A 0x16: 2.75V, ON, SLEEP_A, SLEEP OFF GND */ |
| 25 | #define LDO_A_SETTING 0x16 |
| 26 | /* LDO_C 0x10: 2.65V, ON, SLEEP_A or B, SLEEP full power */ |
| 27 | #define LDO_C_SETTING 0x10 |
| 28 | /* LDO_D 0x10: 2.65V, ON, sleep mode not used */ |
| 29 | #define LDO_D_SETTING 0x10 |
| 30 | /* LDO_E 0x10: 1.8V, ON, SLEEP_A or B, SLEEP full power */ |
| 31 | #define LDO_E_SETTING 0x10 |
| 32 | /* LDO_E SLEEP 0x00: 1.8V, not used, SLEEP_A or B, not used */ |
| 33 | #define LDO_E_SLEEP_SETTING 0x00 |
| 34 | /* LDO_F 0xD0: 2.5V, ON, SLEEP_A or B, SLEEP full power */ |
| 35 | #define LDO_F_SETTING 0xD0 |
| 36 | /* LDO_G 0x00: 2.85V, OFF, SLEEP_A or B, SLEEP full power */ |
| 37 | #define LDO_G_SETTING 0x00 |
| 38 | /* LDO_H 0x18: 2.75V, ON, SLEEP_B, SLEEP full power */ |
| 39 | #define LDO_H_SETTING 0x18 |
| 40 | /* LDO_K 0x00: 2.75V, OFF, SLEEP_A or B, SLEEP full power */ |
| 41 | #define LDO_K_SETTING 0x00 |
| 42 | /* LDO_EXT 0x00: Voltage not set, OFF, not used, not used */ |
| 43 | #define LDO_EXT_SETTING 0x00 |
| 44 | /* BUCK 0x7D: 1.2V, ON, SLEEP_A and B, SLEEP low power */ |
| 45 | #define BUCK_SETTING 0x7D |
| 46 | /* BUCK SLEEP 0xAC: 1.05V, Not used, SLEEP_A and B, Not used */ |
| 47 | #define BUCK_SLEEP_SETTING 0xAC |
| 48 | |
Mattias Wallin | d162251 | 2010-05-01 18:26:40 +0200 | [diff] [blame] | 49 | #ifdef CONFIG_AB3100_CORE |
Linus Walleij | 3d81277 | 2009-09-23 15:45:02 +0100 | [diff] [blame] | 50 | static struct regulator_consumer_supply supply_ldo_c[] = { |
| 51 | { |
| 52 | .dev_name = "ab3100-codec", |
| 53 | .supply = "vaudio", /* Powers the codec */ |
| 54 | }, |
| 55 | }; |
| 56 | |
| 57 | /* |
| 58 | * This one needs to be a supply so we can turn it off |
| 59 | * in order to shut down the system. |
| 60 | */ |
| 61 | static struct regulator_consumer_supply supply_ldo_d[] = { |
| 62 | { |
Linus Walleij | 3d81277 | 2009-09-23 15:45:02 +0100 | [diff] [blame] | 63 | .supply = "vana15", /* Powers the SoC (CPU etc) */ |
| 64 | }, |
| 65 | }; |
| 66 | |
| 67 | static struct regulator_consumer_supply supply_ldo_g[] = { |
| 68 | { |
| 69 | .dev_name = "mmci", |
| 70 | .supply = "vmmc", /* Powers MMC/SD card */ |
| 71 | }, |
| 72 | }; |
| 73 | |
| 74 | static struct regulator_consumer_supply supply_ldo_h[] = { |
| 75 | { |
| 76 | .dev_name = "xgam_pdi", |
| 77 | .supply = "vdisp", /* Powers camera, display etc */ |
| 78 | }, |
| 79 | }; |
| 80 | |
| 81 | static struct regulator_consumer_supply supply_ldo_k[] = { |
| 82 | { |
| 83 | .dev_name = "irda", |
| 84 | .supply = "vir", /* Power IrDA */ |
| 85 | }, |
| 86 | }; |
| 87 | |
| 88 | /* |
| 89 | * This is a placeholder for whoever wish to use the |
| 90 | * external power. |
| 91 | */ |
| 92 | static struct regulator_consumer_supply supply_ldo_ext[] = { |
| 93 | { |
Linus Walleij | 3d81277 | 2009-09-23 15:45:02 +0100 | [diff] [blame] | 94 | .supply = "vext", /* External power */ |
| 95 | }, |
| 96 | }; |
| 97 | |
| 98 | /* Preset (hardware defined) voltages for these regulators */ |
| 99 | #define LDO_A_VOLTAGE 2750000 |
| 100 | #define LDO_C_VOLTAGE 2650000 |
| 101 | #define LDO_D_VOLTAGE 2650000 |
| 102 | |
| 103 | static struct ab3100_platform_data ab3100_plf_data = { |
| 104 | .reg_constraints = { |
| 105 | /* LDO A routing and constraints */ |
| 106 | { |
| 107 | .constraints = { |
| 108 | .name = "vrad", |
| 109 | .min_uV = LDO_A_VOLTAGE, |
| 110 | .max_uV = LDO_A_VOLTAGE, |
| 111 | .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| 112 | .always_on = 1, |
| 113 | .boot_on = 1, |
| 114 | }, |
| 115 | }, |
| 116 | /* LDO C routing and constraints */ |
| 117 | { |
| 118 | .constraints = { |
| 119 | .min_uV = LDO_C_VOLTAGE, |
| 120 | .max_uV = LDO_C_VOLTAGE, |
| 121 | .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| 122 | }, |
| 123 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_c), |
| 124 | .consumer_supplies = supply_ldo_c, |
| 125 | }, |
| 126 | /* LDO D routing and constraints */ |
| 127 | { |
| 128 | .constraints = { |
| 129 | .min_uV = LDO_D_VOLTAGE, |
| 130 | .max_uV = LDO_D_VOLTAGE, |
| 131 | .valid_modes_mask = REGULATOR_MODE_NORMAL, |
Linus Walleij | 6635529 | 2009-11-04 00:00:44 +0100 | [diff] [blame] | 132 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
Linus Walleij | 3d81277 | 2009-09-23 15:45:02 +0100 | [diff] [blame] | 133 | /* |
| 134 | * Actually this is boot_on but we need |
| 135 | * to reference count it externally to |
| 136 | * be able to shut down the system. |
| 137 | */ |
| 138 | }, |
| 139 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_d), |
| 140 | .consumer_supplies = supply_ldo_d, |
| 141 | }, |
| 142 | /* LDO E routing and constraints */ |
| 143 | { |
| 144 | .constraints = { |
| 145 | .name = "vio", |
| 146 | .min_uV = 1800000, |
| 147 | .max_uV = 1800000, |
| 148 | .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| 149 | .valid_ops_mask = |
| 150 | REGULATOR_CHANGE_VOLTAGE | |
| 151 | REGULATOR_CHANGE_STATUS, |
| 152 | .always_on = 1, |
| 153 | .boot_on = 1, |
| 154 | }, |
| 155 | }, |
| 156 | /* LDO F routing and constraints */ |
| 157 | { |
| 158 | .constraints = { |
| 159 | .name = "vana25", |
| 160 | .min_uV = 2500000, |
| 161 | .max_uV = 2500000, |
| 162 | .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| 163 | .valid_ops_mask = |
| 164 | REGULATOR_CHANGE_VOLTAGE | |
| 165 | REGULATOR_CHANGE_STATUS, |
| 166 | .always_on = 1, |
| 167 | .boot_on = 1, |
| 168 | }, |
| 169 | }, |
| 170 | /* LDO G routing and constraints */ |
| 171 | { |
| 172 | .constraints = { |
| 173 | .min_uV = 1500000, |
| 174 | .max_uV = 2850000, |
| 175 | .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| 176 | .valid_ops_mask = |
| 177 | REGULATOR_CHANGE_VOLTAGE | |
| 178 | REGULATOR_CHANGE_STATUS, |
| 179 | }, |
| 180 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_g), |
| 181 | .consumer_supplies = supply_ldo_g, |
| 182 | }, |
| 183 | /* LDO H routing and constraints */ |
| 184 | { |
| 185 | .constraints = { |
| 186 | .min_uV = 1200000, |
| 187 | .max_uV = 2750000, |
| 188 | .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| 189 | .valid_ops_mask = |
| 190 | REGULATOR_CHANGE_VOLTAGE | |
| 191 | REGULATOR_CHANGE_STATUS, |
| 192 | }, |
| 193 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_h), |
| 194 | .consumer_supplies = supply_ldo_h, |
| 195 | }, |
| 196 | /* LDO K routing and constraints */ |
| 197 | { |
| 198 | .constraints = { |
| 199 | .min_uV = 1800000, |
| 200 | .max_uV = 2750000, |
| 201 | .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| 202 | .valid_ops_mask = |
| 203 | REGULATOR_CHANGE_VOLTAGE | |
| 204 | REGULATOR_CHANGE_STATUS, |
| 205 | }, |
| 206 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_k), |
| 207 | .consumer_supplies = supply_ldo_k, |
| 208 | }, |
| 209 | /* External regulator interface. No fixed voltage specified. |
| 210 | * If we knew the voltage of the external regulator and it |
| 211 | * was connected on the board, we could add the (fixed) |
| 212 | * voltage for it here. |
| 213 | */ |
| 214 | { |
| 215 | .constraints = { |
| 216 | .min_uV = 0, |
| 217 | .max_uV = 0, |
| 218 | .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| 219 | .valid_ops_mask = |
| 220 | REGULATOR_CHANGE_STATUS, |
| 221 | }, |
| 222 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_ext), |
| 223 | .consumer_supplies = supply_ldo_ext, |
| 224 | }, |
| 225 | /* Buck converter routing and constraints */ |
| 226 | { |
| 227 | .constraints = { |
| 228 | .name = "vcore", |
| 229 | .min_uV = 1200000, |
| 230 | .max_uV = 1800000, |
| 231 | .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| 232 | .valid_ops_mask = |
| 233 | REGULATOR_CHANGE_VOLTAGE | |
| 234 | REGULATOR_CHANGE_STATUS, |
| 235 | .always_on = 1, |
| 236 | .boot_on = 1, |
| 237 | }, |
| 238 | }, |
| 239 | }, |
| 240 | .reg_initvals = { |
| 241 | LDO_A_SETTING, |
| 242 | LDO_C_SETTING, |
| 243 | LDO_E_SETTING, |
| 244 | LDO_E_SLEEP_SETTING, |
| 245 | LDO_F_SETTING, |
| 246 | LDO_G_SETTING, |
| 247 | LDO_H_SETTING, |
| 248 | LDO_K_SETTING, |
| 249 | LDO_EXT_SETTING, |
| 250 | BUCK_SETTING, |
| 251 | BUCK_SLEEP_SETTING, |
| 252 | LDO_D_SETTING, |
| 253 | }, |
| 254 | }; |
Mattias Wallin | d162251 | 2010-05-01 18:26:40 +0200 | [diff] [blame] | 255 | #endif |
| 256 | |
Linus Walleij | 6be2a0c | 2009-08-13 21:42:01 +0100 | [diff] [blame] | 257 | static struct i2c_board_info __initdata bus0_i2c_board_info[] = { |
Linus Walleij | 8959e74 | 2011-09-26 11:45:30 +0200 | [diff] [blame] | 258 | #ifdef CONFIG_AB3100_CORE |
Linus Walleij | 6be2a0c | 2009-08-13 21:42:01 +0100 | [diff] [blame] | 259 | { |
| 260 | .type = "ab3100", |
| 261 | .addr = 0x48, |
| 262 | .irq = IRQ_U300_IRQ0_EXT, |
Linus Walleij | 3d81277 | 2009-09-23 15:45:02 +0100 | [diff] [blame] | 263 | .platform_data = &ab3100_plf_data, |
Linus Walleij | 6be2a0c | 2009-08-13 21:42:01 +0100 | [diff] [blame] | 264 | }, |
Mattias Wallin | d162251 | 2010-05-01 18:26:40 +0200 | [diff] [blame] | 265 | #else |
| 266 | { }, |
| 267 | #endif |
Linus Walleij | 6be2a0c | 2009-08-13 21:42:01 +0100 | [diff] [blame] | 268 | }; |
| 269 | |
| 270 | static struct i2c_board_info __initdata bus1_i2c_board_info[] = { |
| 271 | #ifdef CONFIG_MACH_U300_BS335 |
| 272 | { |
| 273 | .type = "fwcam", |
| 274 | .addr = 0x10, |
| 275 | }, |
| 276 | { |
| 277 | .type = "fwcam", |
| 278 | .addr = 0x5d, |
| 279 | }, |
| 280 | #else |
| 281 | { }, |
| 282 | #endif |
| 283 | }; |
| 284 | |
| 285 | void __init u300_i2c_register_board_devices(void) |
| 286 | { |
| 287 | i2c_register_board_info(0, bus0_i2c_board_info, |
| 288 | ARRAY_SIZE(bus0_i2c_board_info)); |
Linus Walleij | 3d81277 | 2009-09-23 15:45:02 +0100 | [diff] [blame] | 289 | /* |
| 290 | * This makes the core shut down all unused regulators |
| 291 | * after all the initcalls have completed. |
| 292 | */ |
| 293 | regulator_has_full_constraints(); |
Linus Walleij | 6be2a0c | 2009-08-13 21:42:01 +0100 | [diff] [blame] | 294 | i2c_register_board_info(1, bus1_i2c_board_info, |
| 295 | ARRAY_SIZE(bus1_i2c_board_info)); |
| 296 | } |