1 /* 2 * act8865-regulator.c - Voltage regulation for active-semi ACT88xx PMUs 3 * 4 * http://www.active-semi.com/products/power-management-units/act88xx/ 5 * 6 * Copyright (C) 2013 Atmel Corporation 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 */ 18 19 #include <linux/module.h> 20 #include <linux/init.h> 21 #include <linux/i2c.h> 22 #include <linux/err.h> 23 #include <linux/platform_device.h> 24 #include <linux/regulator/driver.h> 25 #include <linux/regulator/act8865.h> 26 #include <linux/of.h> 27 #include <linux/of_device.h> 28 #include <linux/regulator/of_regulator.h> 29 #include <linux/regmap.h> 30 31 /* 32 * ACT8600 Global Register Map. 33 */ 34 #define ACT8600_SYS_MODE 0x00 35 #define ACT8600_SYS_CTRL 0x01 36 #define ACT8600_DCDC1_VSET 0x10 37 #define ACT8600_DCDC1_CTRL 0x12 38 #define ACT8600_DCDC2_VSET 0x20 39 #define ACT8600_DCDC2_CTRL 0x22 40 #define ACT8600_DCDC3_VSET 0x30 41 #define ACT8600_DCDC3_CTRL 0x32 42 #define ACT8600_SUDCDC4_VSET 0x40 43 #define ACT8600_SUDCDC4_CTRL 0x41 44 #define ACT8600_LDO5_VSET 0x50 45 #define ACT8600_LDO5_CTRL 0x51 46 #define ACT8600_LDO6_VSET 0x60 47 #define ACT8600_LDO6_CTRL 0x61 48 #define ACT8600_LDO7_VSET 0x70 49 #define ACT8600_LDO7_CTRL 0x71 50 #define ACT8600_LDO8_VSET 0x80 51 #define ACT8600_LDO8_CTRL 0x81 52 #define ACT8600_LDO910_CTRL 0x91 53 #define ACT8600_APCH0 0xA1 54 #define ACT8600_APCH1 0xA8 55 #define ACT8600_APCH2 0xA9 56 #define ACT8600_APCH_STAT 0xAA 57 #define ACT8600_OTG0 0xB0 58 #define ACT8600_OTG1 0xB2 59 60 /* 61 * ACT8846 Global Register Map. 62 */ 63 #define ACT8846_SYS0 0x00 64 #define ACT8846_SYS1 0x01 65 #define ACT8846_REG1_VSET 0x10 66 #define ACT8846_REG1_CTRL 0x12 67 #define ACT8846_REG2_VSET0 0x20 68 #define ACT8846_REG2_VSET1 0x21 69 #define ACT8846_REG2_CTRL 0x22 70 #define ACT8846_REG3_VSET0 0x30 71 #define ACT8846_REG3_VSET1 0x31 72 #define ACT8846_REG3_CTRL 0x32 73 #define ACT8846_REG4_VSET0 0x40 74 #define ACT8846_REG4_VSET1 0x41 75 #define ACT8846_REG4_CTRL 0x42 76 #define ACT8846_REG5_VSET 0x50 77 #define ACT8846_REG5_CTRL 0x51 78 #define ACT8846_REG6_VSET 0x58 79 #define ACT8846_REG6_CTRL 0x59 80 #define ACT8846_REG7_VSET 0x60 81 #define ACT8846_REG7_CTRL 0x61 82 #define ACT8846_REG8_VSET 0x68 83 #define ACT8846_REG8_CTRL 0x69 84 #define ACT8846_REG9_VSET 0x70 85 #define ACT8846_REG9_CTRL 0x71 86 #define ACT8846_REG10_VSET 0x80 87 #define ACT8846_REG10_CTRL 0x81 88 #define ACT8846_REG11_VSET 0x90 89 #define ACT8846_REG11_CTRL 0x91 90 #define ACT8846_REG12_VSET 0xa0 91 #define ACT8846_REG12_CTRL 0xa1 92 #define ACT8846_REG13_CTRL 0xb1 93 #define ACT8846_GLB_OFF_CTRL 0xc3 94 #define ACT8846_OFF_SYSMASK 0x18 95 96 /* 97 * ACT8865 Global Register Map. 98 */ 99 #define ACT8865_SYS_MODE 0x00 100 #define ACT8865_SYS_CTRL 0x01 101 #define ACT8865_DCDC1_VSET1 0x20 102 #define ACT8865_DCDC1_VSET2 0x21 103 #define ACT8865_DCDC1_CTRL 0x22 104 #define ACT8865_DCDC2_VSET1 0x30 105 #define ACT8865_DCDC2_VSET2 0x31 106 #define ACT8865_DCDC2_CTRL 0x32 107 #define ACT8865_DCDC3_VSET1 0x40 108 #define ACT8865_DCDC3_VSET2 0x41 109 #define ACT8865_DCDC3_CTRL 0x42 110 #define ACT8865_LDO1_VSET 0x50 111 #define ACT8865_LDO1_CTRL 0x51 112 #define ACT8865_LDO2_VSET 0x54 113 #define ACT8865_LDO2_CTRL 0x55 114 #define ACT8865_LDO3_VSET 0x60 115 #define ACT8865_LDO3_CTRL 0x61 116 #define ACT8865_LDO4_VSET 0x64 117 #define ACT8865_LDO4_CTRL 0x65 118 #define ACT8865_MSTROFF 0x20 119 120 /* 121 * Field Definitions. 122 */ 123 #define ACT8865_ENA 0x80 /* ON - [7] */ 124 #define ACT8865_VSEL_MASK 0x3F /* VSET - [5:0] */ 125 126 127 #define ACT8600_LDO10_ENA 0x40 /* ON - [6] */ 128 #define ACT8600_SUDCDC_VSEL_MASK 0xFF /* SUDCDC VSET - [7:0] */ 129 130 /* 131 * ACT8865 voltage number 132 */ 133 #define ACT8865_VOLTAGE_NUM 64 134 #define ACT8600_SUDCDC_VOLTAGE_NUM 256 135 136 struct act8865 { 137 struct regmap *regmap; 138 int off_reg; 139 int off_mask; 140 }; 141 142 static const struct regmap_range act8600_reg_ranges[] = { 143 regmap_reg_range(0x00, 0x01), 144 regmap_reg_range(0x10, 0x10), 145 regmap_reg_range(0x12, 0x12), 146 regmap_reg_range(0x20, 0x20), 147 regmap_reg_range(0x22, 0x22), 148 regmap_reg_range(0x30, 0x30), 149 regmap_reg_range(0x32, 0x32), 150 regmap_reg_range(0x40, 0x41), 151 regmap_reg_range(0x50, 0x51), 152 regmap_reg_range(0x60, 0x61), 153 regmap_reg_range(0x70, 0x71), 154 regmap_reg_range(0x80, 0x81), 155 regmap_reg_range(0x91, 0x91), 156 regmap_reg_range(0xA1, 0xA1), 157 regmap_reg_range(0xA8, 0xAA), 158 regmap_reg_range(0xB0, 0xB0), 159 regmap_reg_range(0xB2, 0xB2), 160 regmap_reg_range(0xC1, 0xC1), 161 }; 162 163 static const struct regmap_range act8600_reg_ro_ranges[] = { 164 regmap_reg_range(0xAA, 0xAA), 165 regmap_reg_range(0xC1, 0xC1), 166 }; 167 168 static const struct regmap_range act8600_reg_volatile_ranges[] = { 169 regmap_reg_range(0x00, 0x01), 170 regmap_reg_range(0x12, 0x12), 171 regmap_reg_range(0x22, 0x22), 172 regmap_reg_range(0x32, 0x32), 173 regmap_reg_range(0x41, 0x41), 174 regmap_reg_range(0x51, 0x51), 175 regmap_reg_range(0x61, 0x61), 176 regmap_reg_range(0x71, 0x71), 177 regmap_reg_range(0x81, 0x81), 178 regmap_reg_range(0xA8, 0xA8), 179 regmap_reg_range(0xAA, 0xAA), 180 regmap_reg_range(0xB0, 0xB0), 181 regmap_reg_range(0xC1, 0xC1), 182 }; 183 184 static const struct regmap_access_table act8600_write_ranges_table = { 185 .yes_ranges = act8600_reg_ranges, 186 .n_yes_ranges = ARRAY_SIZE(act8600_reg_ranges), 187 .no_ranges = act8600_reg_ro_ranges, 188 .n_no_ranges = ARRAY_SIZE(act8600_reg_ro_ranges), 189 }; 190 191 static const struct regmap_access_table act8600_read_ranges_table = { 192 .yes_ranges = act8600_reg_ranges, 193 .n_yes_ranges = ARRAY_SIZE(act8600_reg_ranges), 194 }; 195 196 static const struct regmap_access_table act8600_volatile_ranges_table = { 197 .yes_ranges = act8600_reg_volatile_ranges, 198 .n_yes_ranges = ARRAY_SIZE(act8600_reg_volatile_ranges), 199 }; 200 201 static const struct regmap_config act8600_regmap_config = { 202 .reg_bits = 8, 203 .val_bits = 8, 204 .max_register = 0xFF, 205 .wr_table = &act8600_write_ranges_table, 206 .rd_table = &act8600_read_ranges_table, 207 .volatile_table = &act8600_volatile_ranges_table, 208 }; 209 210 static const struct regmap_config act8865_regmap_config = { 211 .reg_bits = 8, 212 .val_bits = 8, 213 }; 214 215 static const struct regulator_linear_range act8865_voltage_ranges[] = { 216 REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000), 217 REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000), 218 REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000), 219 }; 220 221 static const struct regulator_linear_range act8600_sudcdc_voltage_ranges[] = { 222 REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0), 223 REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000), 224 REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000), 225 REGULATOR_LINEAR_RANGE(19000000, 192, 247, 400000), 226 REGULATOR_LINEAR_RANGE(41400000, 248, 255, 0), 227 }; 228 229 static struct regulator_ops act8865_ops = { 230 .list_voltage = regulator_list_voltage_linear_range, 231 .map_voltage = regulator_map_voltage_linear_range, 232 .get_voltage_sel = regulator_get_voltage_sel_regmap, 233 .set_voltage_sel = regulator_set_voltage_sel_regmap, 234 .enable = regulator_enable_regmap, 235 .disable = regulator_disable_regmap, 236 .is_enabled = regulator_is_enabled_regmap, 237 }; 238 239 static struct regulator_ops act8865_ldo_ops = { 240 .enable = regulator_enable_regmap, 241 .disable = regulator_disable_regmap, 242 .is_enabled = regulator_is_enabled_regmap, 243 }; 244 245 #define ACT88xx_REG(_name, _family, _id, _vsel_reg, _supply) \ 246 [_family##_ID_##_id] = { \ 247 .name = _name, \ 248 .supply_name = _supply, \ 249 .id = _family##_ID_##_id, \ 250 .type = REGULATOR_VOLTAGE, \ 251 .ops = &act8865_ops, \ 252 .n_voltages = ACT8865_VOLTAGE_NUM, \ 253 .linear_ranges = act8865_voltage_ranges, \ 254 .n_linear_ranges = ARRAY_SIZE(act8865_voltage_ranges), \ 255 .vsel_reg = _family##_##_id##_##_vsel_reg, \ 256 .vsel_mask = ACT8865_VSEL_MASK, \ 257 .enable_reg = _family##_##_id##_CTRL, \ 258 .enable_mask = ACT8865_ENA, \ 259 .owner = THIS_MODULE, \ 260 } 261 262 static const struct regulator_desc act8600_regulators[] = { 263 ACT88xx_REG("DCDC1", ACT8600, DCDC1, VSET, "vp1"), 264 ACT88xx_REG("DCDC2", ACT8600, DCDC2, VSET, "vp2"), 265 ACT88xx_REG("DCDC3", ACT8600, DCDC3, VSET, "vp3"), 266 { 267 .name = "SUDCDC_REG4", 268 .id = ACT8600_ID_SUDCDC4, 269 .ops = &act8865_ops, 270 .type = REGULATOR_VOLTAGE, 271 .n_voltages = ACT8600_SUDCDC_VOLTAGE_NUM, 272 .linear_ranges = act8600_sudcdc_voltage_ranges, 273 .n_linear_ranges = ARRAY_SIZE(act8600_sudcdc_voltage_ranges), 274 .vsel_reg = ACT8600_SUDCDC4_VSET, 275 .vsel_mask = ACT8600_SUDCDC_VSEL_MASK, 276 .enable_reg = ACT8600_SUDCDC4_CTRL, 277 .enable_mask = ACT8865_ENA, 278 .owner = THIS_MODULE, 279 }, 280 ACT88xx_REG("LDO5", ACT8600, LDO5, VSET, "inl"), 281 ACT88xx_REG("LDO6", ACT8600, LDO6, VSET, "inl"), 282 ACT88xx_REG("LDO7", ACT8600, LDO7, VSET, "inl"), 283 ACT88xx_REG("LDO8", ACT8600, LDO8, VSET, "inl"), 284 { 285 .name = "LDO_REG9", 286 .id = ACT8600_ID_LDO9, 287 .ops = &act8865_ldo_ops, 288 .type = REGULATOR_VOLTAGE, 289 .n_voltages = 1, 290 .fixed_uV = 3300000, 291 .enable_reg = ACT8600_LDO910_CTRL, 292 .enable_mask = ACT8865_ENA, 293 .owner = THIS_MODULE, 294 }, 295 { 296 .name = "LDO_REG10", 297 .id = ACT8600_ID_LDO10, 298 .ops = &act8865_ldo_ops, 299 .type = REGULATOR_VOLTAGE, 300 .n_voltages = 1, 301 .fixed_uV = 1200000, 302 .enable_reg = ACT8600_LDO910_CTRL, 303 .enable_mask = ACT8600_LDO10_ENA, 304 .owner = THIS_MODULE, 305 }, 306 }; 307 308 static const struct regulator_desc act8846_regulators[] = { 309 ACT88xx_REG("REG1", ACT8846, REG1, VSET, "vp1"), 310 ACT88xx_REG("REG2", ACT8846, REG2, VSET0, "vp2"), 311 ACT88xx_REG("REG3", ACT8846, REG3, VSET0, "vp3"), 312 ACT88xx_REG("REG4", ACT8846, REG4, VSET0, "vp4"), 313 ACT88xx_REG("REG5", ACT8846, REG5, VSET, "inl1"), 314 ACT88xx_REG("REG6", ACT8846, REG6, VSET, "inl1"), 315 ACT88xx_REG("REG7", ACT8846, REG7, VSET, "inl1"), 316 ACT88xx_REG("REG8", ACT8846, REG8, VSET, "inl2"), 317 ACT88xx_REG("REG9", ACT8846, REG9, VSET, "inl2"), 318 ACT88xx_REG("REG10", ACT8846, REG10, VSET, "inl3"), 319 ACT88xx_REG("REG11", ACT8846, REG11, VSET, "inl3"), 320 ACT88xx_REG("REG12", ACT8846, REG12, VSET, "inl3"), 321 }; 322 323 static const struct regulator_desc act8865_regulators[] = { 324 ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1, "vp1"), 325 ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1, "vp2"), 326 ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1, "vp3"), 327 ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"), 328 ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"), 329 ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"), 330 ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"), 331 }; 332 333 static const struct regulator_desc act8865_alt_regulators[] = { 334 ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET2, "vp1"), 335 ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET2, "vp2"), 336 ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET2, "vp3"), 337 ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"), 338 ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"), 339 ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"), 340 ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"), 341 }; 342 343 #ifdef CONFIG_OF 344 static const struct of_device_id act8865_dt_ids[] = { 345 { .compatible = "active-semi,act8600", .data = (void *)ACT8600 }, 346 { .compatible = "active-semi,act8846", .data = (void *)ACT8846 }, 347 { .compatible = "active-semi,act8865", .data = (void *)ACT8865 }, 348 { } 349 }; 350 MODULE_DEVICE_TABLE(of, act8865_dt_ids); 351 352 static struct of_regulator_match act8846_matches[] = { 353 [ACT8846_ID_REG1] = { .name = "REG1" }, 354 [ACT8846_ID_REG2] = { .name = "REG2" }, 355 [ACT8846_ID_REG3] = { .name = "REG3" }, 356 [ACT8846_ID_REG4] = { .name = "REG4" }, 357 [ACT8846_ID_REG5] = { .name = "REG5" }, 358 [ACT8846_ID_REG6] = { .name = "REG6" }, 359 [ACT8846_ID_REG7] = { .name = "REG7" }, 360 [ACT8846_ID_REG8] = { .name = "REG8" }, 361 [ACT8846_ID_REG9] = { .name = "REG9" }, 362 [ACT8846_ID_REG10] = { .name = "REG10" }, 363 [ACT8846_ID_REG11] = { .name = "REG11" }, 364 [ACT8846_ID_REG12] = { .name = "REG12" }, 365 }; 366 367 static struct of_regulator_match act8865_matches[] = { 368 [ACT8865_ID_DCDC1] = { .name = "DCDC_REG1"}, 369 [ACT8865_ID_DCDC2] = { .name = "DCDC_REG2"}, 370 [ACT8865_ID_DCDC3] = { .name = "DCDC_REG3"}, 371 [ACT8865_ID_LDO1] = { .name = "LDO_REG1"}, 372 [ACT8865_ID_LDO2] = { .name = "LDO_REG2"}, 373 [ACT8865_ID_LDO3] = { .name = "LDO_REG3"}, 374 [ACT8865_ID_LDO4] = { .name = "LDO_REG4"}, 375 }; 376 377 static struct of_regulator_match act8600_matches[] = { 378 [ACT8600_ID_DCDC1] = { .name = "DCDC_REG1"}, 379 [ACT8600_ID_DCDC2] = { .name = "DCDC_REG2"}, 380 [ACT8600_ID_DCDC3] = { .name = "DCDC_REG3"}, 381 [ACT8600_ID_SUDCDC4] = { .name = "SUDCDC_REG4"}, 382 [ACT8600_ID_LDO5] = { .name = "LDO_REG5"}, 383 [ACT8600_ID_LDO6] = { .name = "LDO_REG6"}, 384 [ACT8600_ID_LDO7] = { .name = "LDO_REG7"}, 385 [ACT8600_ID_LDO8] = { .name = "LDO_REG8"}, 386 [ACT8600_ID_LDO9] = { .name = "LDO_REG9"}, 387 [ACT8600_ID_LDO10] = { .name = "LDO_REG10"}, 388 }; 389 390 static int act8865_pdata_from_dt(struct device *dev, 391 struct act8865_platform_data *pdata, 392 unsigned long type) 393 { 394 int matched, i, num_matches; 395 struct device_node *np; 396 struct act8865_regulator_data *regulator; 397 struct of_regulator_match *matches; 398 399 switch (type) { 400 case ACT8600: 401 matches = act8600_matches; 402 num_matches = ARRAY_SIZE(act8600_matches); 403 break; 404 case ACT8846: 405 matches = act8846_matches; 406 num_matches = ARRAY_SIZE(act8846_matches); 407 break; 408 case ACT8865: 409 matches = act8865_matches; 410 num_matches = ARRAY_SIZE(act8865_matches); 411 break; 412 default: 413 dev_err(dev, "invalid device id %lu\n", type); 414 return -EINVAL; 415 } 416 417 np = of_get_child_by_name(dev->of_node, "regulators"); 418 if (!np) { 419 dev_err(dev, "missing 'regulators' subnode in DT\n"); 420 return -EINVAL; 421 } 422 423 matched = of_regulator_match(dev, np, matches, num_matches); 424 of_node_put(np); 425 if (matched <= 0) 426 return matched; 427 428 pdata->regulators = devm_kcalloc(dev, 429 num_matches, 430 sizeof(struct act8865_regulator_data), 431 GFP_KERNEL); 432 if (!pdata->regulators) 433 return -ENOMEM; 434 435 pdata->num_regulators = num_matches; 436 regulator = pdata->regulators; 437 438 for (i = 0; i < num_matches; i++) { 439 regulator->id = i; 440 regulator->name = matches[i].name; 441 regulator->init_data = matches[i].init_data; 442 regulator->of_node = matches[i].of_node; 443 regulator++; 444 } 445 446 return 0; 447 } 448 #else 449 static inline int act8865_pdata_from_dt(struct device *dev, 450 struct act8865_platform_data *pdata, 451 unsigned long type) 452 { 453 return 0; 454 } 455 #endif 456 457 static struct act8865_regulator_data *act8865_get_regulator_data( 458 int id, struct act8865_platform_data *pdata) 459 { 460 int i; 461 462 if (!pdata) 463 return NULL; 464 465 for (i = 0; i < pdata->num_regulators; i++) { 466 if (pdata->regulators[i].id == id) 467 return &pdata->regulators[i]; 468 } 469 470 return NULL; 471 } 472 473 static struct i2c_client *act8865_i2c_client; 474 static void act8865_power_off(void) 475 { 476 struct act8865 *act8865; 477 478 act8865 = i2c_get_clientdata(act8865_i2c_client); 479 regmap_write(act8865->regmap, act8865->off_reg, act8865->off_mask); 480 while (1); 481 } 482 483 static int act8865_pmic_probe(struct i2c_client *client, 484 const struct i2c_device_id *i2c_id) 485 { 486 const struct regulator_desc *regulators; 487 struct act8865_platform_data pdata_of, *pdata; 488 struct device *dev = &client->dev; 489 int i, ret, num_regulators; 490 struct act8865 *act8865; 491 const struct regmap_config *regmap_config; 492 unsigned long type; 493 int off_reg, off_mask; 494 int voltage_select = 0; 495 496 pdata = dev_get_platdata(dev); 497 498 if (dev->of_node && !pdata) { 499 const struct of_device_id *id; 500 501 id = of_match_device(of_match_ptr(act8865_dt_ids), dev); 502 if (!id) 503 return -ENODEV; 504 505 type = (unsigned long) id->data; 506 507 voltage_select = !!of_get_property(dev->of_node, 508 "active-semi,vsel-high", 509 NULL); 510 } else { 511 type = i2c_id->driver_data; 512 } 513 514 switch (type) { 515 case ACT8600: 516 regulators = act8600_regulators; 517 num_regulators = ARRAY_SIZE(act8600_regulators); 518 regmap_config = &act8600_regmap_config; 519 off_reg = -1; 520 off_mask = -1; 521 break; 522 case ACT8846: 523 regulators = act8846_regulators; 524 num_regulators = ARRAY_SIZE(act8846_regulators); 525 regmap_config = &act8865_regmap_config; 526 off_reg = ACT8846_GLB_OFF_CTRL; 527 off_mask = ACT8846_OFF_SYSMASK; 528 break; 529 case ACT8865: 530 if (voltage_select) { 531 regulators = act8865_alt_regulators; 532 num_regulators = ARRAY_SIZE(act8865_alt_regulators); 533 } else { 534 regulators = act8865_regulators; 535 num_regulators = ARRAY_SIZE(act8865_regulators); 536 } 537 regmap_config = &act8865_regmap_config; 538 off_reg = ACT8865_SYS_CTRL; 539 off_mask = ACT8865_MSTROFF; 540 break; 541 default: 542 dev_err(dev, "invalid device id %lu\n", type); 543 return -EINVAL; 544 } 545 546 if (dev->of_node && !pdata) { 547 ret = act8865_pdata_from_dt(dev, &pdata_of, type); 548 if (ret < 0) 549 return ret; 550 551 pdata = &pdata_of; 552 } 553 554 act8865 = devm_kzalloc(dev, sizeof(struct act8865), GFP_KERNEL); 555 if (!act8865) 556 return -ENOMEM; 557 558 act8865->regmap = devm_regmap_init_i2c(client, regmap_config); 559 if (IS_ERR(act8865->regmap)) { 560 ret = PTR_ERR(act8865->regmap); 561 dev_err(dev, "Failed to allocate register map: %d\n", ret); 562 return ret; 563 } 564 565 if (of_device_is_system_power_controller(dev->of_node)) { 566 if (!pm_power_off && (off_reg > 0)) { 567 act8865_i2c_client = client; 568 act8865->off_reg = off_reg; 569 act8865->off_mask = off_mask; 570 pm_power_off = act8865_power_off; 571 } else { 572 dev_err(dev, "Failed to set poweroff capability, already defined\n"); 573 } 574 } 575 576 /* Finally register devices */ 577 for (i = 0; i < num_regulators; i++) { 578 const struct regulator_desc *desc = ®ulators[i]; 579 struct regulator_config config = { }; 580 struct act8865_regulator_data *rdata; 581 struct regulator_dev *rdev; 582 583 config.dev = dev; 584 config.driver_data = act8865; 585 config.regmap = act8865->regmap; 586 587 rdata = act8865_get_regulator_data(desc->id, pdata); 588 if (rdata) { 589 config.init_data = rdata->init_data; 590 config.of_node = rdata->of_node; 591 } 592 593 rdev = devm_regulator_register(dev, desc, &config); 594 if (IS_ERR(rdev)) { 595 dev_err(dev, "failed to register %s\n", desc->name); 596 return PTR_ERR(rdev); 597 } 598 } 599 600 i2c_set_clientdata(client, act8865); 601 602 return 0; 603 } 604 605 static const struct i2c_device_id act8865_ids[] = { 606 { .name = "act8600", .driver_data = ACT8600 }, 607 { .name = "act8846", .driver_data = ACT8846 }, 608 { .name = "act8865", .driver_data = ACT8865 }, 609 { }, 610 }; 611 MODULE_DEVICE_TABLE(i2c, act8865_ids); 612 613 static struct i2c_driver act8865_pmic_driver = { 614 .driver = { 615 .name = "act8865", 616 }, 617 .probe = act8865_pmic_probe, 618 .id_table = act8865_ids, 619 }; 620 621 module_i2c_driver(act8865_pmic_driver); 622 623 MODULE_DESCRIPTION("active-semi act88xx voltage regulator driver"); 624 MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>"); 625 MODULE_LICENSE("GPL v2"); 626