1 /* 2 * TI LP8788 MFD - ldo regulator driver 3 * 4 * Copyright 2012 Texas Instruments 5 * 6 * Author: Milo(Woogyom) Kim <milo.kim@ti.com> 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 version 2 as 10 * published by the Free Software Foundation. 11 * 12 */ 13 14 #include <linux/module.h> 15 #include <linux/slab.h> 16 #include <linux/err.h> 17 #include <linux/platform_device.h> 18 #include <linux/regulator/driver.h> 19 #include <linux/gpio/consumer.h> 20 #include <linux/mfd/lp8788.h> 21 22 /* register address */ 23 #define LP8788_EN_LDO_A 0x0D /* DLDO 1 ~ 8 */ 24 #define LP8788_EN_LDO_B 0x0E /* DLDO 9 ~ 12, ALDO 1 ~ 4 */ 25 #define LP8788_EN_LDO_C 0x0F /* ALDO 5 ~ 10 */ 26 #define LP8788_EN_SEL 0x10 27 #define LP8788_DLDO1_VOUT 0x2E 28 #define LP8788_DLDO2_VOUT 0x2F 29 #define LP8788_DLDO3_VOUT 0x30 30 #define LP8788_DLDO4_VOUT 0x31 31 #define LP8788_DLDO5_VOUT 0x32 32 #define LP8788_DLDO6_VOUT 0x33 33 #define LP8788_DLDO7_VOUT 0x34 34 #define LP8788_DLDO8_VOUT 0x35 35 #define LP8788_DLDO9_VOUT 0x36 36 #define LP8788_DLDO10_VOUT 0x37 37 #define LP8788_DLDO11_VOUT 0x38 38 #define LP8788_DLDO12_VOUT 0x39 39 #define LP8788_ALDO1_VOUT 0x3A 40 #define LP8788_ALDO2_VOUT 0x3B 41 #define LP8788_ALDO3_VOUT 0x3C 42 #define LP8788_ALDO4_VOUT 0x3D 43 #define LP8788_ALDO5_VOUT 0x3E 44 #define LP8788_ALDO6_VOUT 0x3F 45 #define LP8788_ALDO7_VOUT 0x40 46 #define LP8788_ALDO8_VOUT 0x41 47 #define LP8788_ALDO9_VOUT 0x42 48 #define LP8788_ALDO10_VOUT 0x43 49 #define LP8788_DLDO1_TIMESTEP 0x44 50 51 /* mask/shift bits */ 52 #define LP8788_EN_DLDO1_M BIT(0) /* Addr 0Dh ~ 0Fh */ 53 #define LP8788_EN_DLDO2_M BIT(1) 54 #define LP8788_EN_DLDO3_M BIT(2) 55 #define LP8788_EN_DLDO4_M BIT(3) 56 #define LP8788_EN_DLDO5_M BIT(4) 57 #define LP8788_EN_DLDO6_M BIT(5) 58 #define LP8788_EN_DLDO7_M BIT(6) 59 #define LP8788_EN_DLDO8_M BIT(7) 60 #define LP8788_EN_DLDO9_M BIT(0) 61 #define LP8788_EN_DLDO10_M BIT(1) 62 #define LP8788_EN_DLDO11_M BIT(2) 63 #define LP8788_EN_DLDO12_M BIT(3) 64 #define LP8788_EN_ALDO1_M BIT(4) 65 #define LP8788_EN_ALDO2_M BIT(5) 66 #define LP8788_EN_ALDO3_M BIT(6) 67 #define LP8788_EN_ALDO4_M BIT(7) 68 #define LP8788_EN_ALDO5_M BIT(0) 69 #define LP8788_EN_ALDO6_M BIT(1) 70 #define LP8788_EN_ALDO7_M BIT(2) 71 #define LP8788_EN_ALDO8_M BIT(3) 72 #define LP8788_EN_ALDO9_M BIT(4) 73 #define LP8788_EN_ALDO10_M BIT(5) 74 #define LP8788_EN_SEL_DLDO911_M BIT(0) /* Addr 10h */ 75 #define LP8788_EN_SEL_DLDO7_M BIT(1) 76 #define LP8788_EN_SEL_ALDO7_M BIT(2) 77 #define LP8788_EN_SEL_ALDO5_M BIT(3) 78 #define LP8788_EN_SEL_ALDO234_M BIT(4) 79 #define LP8788_EN_SEL_ALDO1_M BIT(5) 80 #define LP8788_VOUT_5BIT_M 0x1F /* Addr 2Eh ~ 43h */ 81 #define LP8788_VOUT_4BIT_M 0x0F 82 #define LP8788_VOUT_3BIT_M 0x07 83 #define LP8788_VOUT_1BIT_M 0x01 84 #define LP8788_STARTUP_TIME_M 0xF8 /* Addr 44h ~ 59h */ 85 #define LP8788_STARTUP_TIME_S 3 86 87 #define ENABLE_TIME_USEC 32 88 89 enum lp8788_ldo_id { 90 DLDO1, 91 DLDO2, 92 DLDO3, 93 DLDO4, 94 DLDO5, 95 DLDO6, 96 DLDO7, 97 DLDO8, 98 DLDO9, 99 DLDO10, 100 DLDO11, 101 DLDO12, 102 ALDO1, 103 ALDO2, 104 ALDO3, 105 ALDO4, 106 ALDO5, 107 ALDO6, 108 ALDO7, 109 ALDO8, 110 ALDO9, 111 ALDO10, 112 }; 113 114 struct lp8788_ldo { 115 struct lp8788 *lp; 116 struct regulator_desc *desc; 117 struct regulator_dev *regulator; 118 struct gpio_desc *ena_gpiod; 119 }; 120 121 /* DLDO 1, 2, 3, 9 voltage table */ 122 static const int lp8788_dldo1239_vtbl[] = { 123 1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000, 124 2600000, 2700000, 2800000, 2900000, 3000000, 2850000, 2850000, 2850000, 125 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 126 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 127 }; 128 129 /* DLDO 4 voltage table */ 130 static const int lp8788_dldo4_vtbl[] = { 1800000, 3000000 }; 131 132 /* DLDO 5, 7, 8 and ALDO 6 voltage table */ 133 static const int lp8788_dldo578_aldo6_vtbl[] = { 134 1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000, 135 2600000, 2700000, 2800000, 2900000, 3000000, 3000000, 3000000, 3000000, 136 }; 137 138 /* DLDO 6 voltage table */ 139 static const int lp8788_dldo6_vtbl[] = { 140 3000000, 3100000, 3200000, 3300000, 3400000, 3500000, 3600000, 3600000, 141 }; 142 143 /* DLDO 10, 11 voltage table */ 144 static const int lp8788_dldo1011_vtbl[] = { 145 1100000, 1150000, 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 146 1500000, 1500000, 1500000, 1500000, 1500000, 1500000, 1500000, 1500000, 147 }; 148 149 /* ALDO 1 voltage table */ 150 static const int lp8788_aldo1_vtbl[] = { 1800000, 2850000 }; 151 152 /* ALDO 7 voltage table */ 153 static const int lp8788_aldo7_vtbl[] = { 154 1200000, 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1800000, 155 }; 156 157 static int lp8788_ldo_enable_time(struct regulator_dev *rdev) 158 { 159 struct lp8788_ldo *ldo = rdev_get_drvdata(rdev); 160 enum lp8788_ldo_id id = rdev_get_id(rdev); 161 u8 val, addr = LP8788_DLDO1_TIMESTEP + id; 162 163 if (lp8788_read_byte(ldo->lp, addr, &val)) 164 return -EINVAL; 165 166 val = (val & LP8788_STARTUP_TIME_M) >> LP8788_STARTUP_TIME_S; 167 168 return ENABLE_TIME_USEC * val; 169 } 170 171 static const struct regulator_ops lp8788_ldo_voltage_table_ops = { 172 .list_voltage = regulator_list_voltage_table, 173 .set_voltage_sel = regulator_set_voltage_sel_regmap, 174 .get_voltage_sel = regulator_get_voltage_sel_regmap, 175 .enable = regulator_enable_regmap, 176 .disable = regulator_disable_regmap, 177 .is_enabled = regulator_is_enabled_regmap, 178 .enable_time = lp8788_ldo_enable_time, 179 }; 180 181 static const struct regulator_ops lp8788_ldo_voltage_fixed_ops = { 182 .list_voltage = regulator_list_voltage_linear, 183 .enable = regulator_enable_regmap, 184 .disable = regulator_disable_regmap, 185 .is_enabled = regulator_is_enabled_regmap, 186 .enable_time = lp8788_ldo_enable_time, 187 }; 188 189 static struct regulator_desc lp8788_dldo_desc[] = { 190 { 191 .name = "dldo1", 192 .id = DLDO1, 193 .ops = &lp8788_ldo_voltage_table_ops, 194 .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl), 195 .volt_table = lp8788_dldo1239_vtbl, 196 .type = REGULATOR_VOLTAGE, 197 .owner = THIS_MODULE, 198 .vsel_reg = LP8788_DLDO1_VOUT, 199 .vsel_mask = LP8788_VOUT_5BIT_M, 200 .enable_reg = LP8788_EN_LDO_A, 201 .enable_mask = LP8788_EN_DLDO1_M, 202 }, 203 { 204 .name = "dldo2", 205 .id = DLDO2, 206 .ops = &lp8788_ldo_voltage_table_ops, 207 .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl), 208 .volt_table = lp8788_dldo1239_vtbl, 209 .type = REGULATOR_VOLTAGE, 210 .owner = THIS_MODULE, 211 .vsel_reg = LP8788_DLDO2_VOUT, 212 .vsel_mask = LP8788_VOUT_5BIT_M, 213 .enable_reg = LP8788_EN_LDO_A, 214 .enable_mask = LP8788_EN_DLDO2_M, 215 }, 216 { 217 .name = "dldo3", 218 .id = DLDO3, 219 .ops = &lp8788_ldo_voltage_table_ops, 220 .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl), 221 .volt_table = lp8788_dldo1239_vtbl, 222 .type = REGULATOR_VOLTAGE, 223 .owner = THIS_MODULE, 224 .vsel_reg = LP8788_DLDO3_VOUT, 225 .vsel_mask = LP8788_VOUT_5BIT_M, 226 .enable_reg = LP8788_EN_LDO_A, 227 .enable_mask = LP8788_EN_DLDO3_M, 228 }, 229 { 230 .name = "dldo4", 231 .id = DLDO4, 232 .ops = &lp8788_ldo_voltage_table_ops, 233 .n_voltages = ARRAY_SIZE(lp8788_dldo4_vtbl), 234 .volt_table = lp8788_dldo4_vtbl, 235 .type = REGULATOR_VOLTAGE, 236 .owner = THIS_MODULE, 237 .vsel_reg = LP8788_DLDO4_VOUT, 238 .vsel_mask = LP8788_VOUT_1BIT_M, 239 .enable_reg = LP8788_EN_LDO_A, 240 .enable_mask = LP8788_EN_DLDO4_M, 241 }, 242 { 243 .name = "dldo5", 244 .id = DLDO5, 245 .ops = &lp8788_ldo_voltage_table_ops, 246 .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl), 247 .volt_table = lp8788_dldo578_aldo6_vtbl, 248 .type = REGULATOR_VOLTAGE, 249 .owner = THIS_MODULE, 250 .vsel_reg = LP8788_DLDO5_VOUT, 251 .vsel_mask = LP8788_VOUT_4BIT_M, 252 .enable_reg = LP8788_EN_LDO_A, 253 .enable_mask = LP8788_EN_DLDO5_M, 254 }, 255 { 256 .name = "dldo6", 257 .id = DLDO6, 258 .ops = &lp8788_ldo_voltage_table_ops, 259 .n_voltages = ARRAY_SIZE(lp8788_dldo6_vtbl), 260 .volt_table = lp8788_dldo6_vtbl, 261 .type = REGULATOR_VOLTAGE, 262 .owner = THIS_MODULE, 263 .vsel_reg = LP8788_DLDO6_VOUT, 264 .vsel_mask = LP8788_VOUT_3BIT_M, 265 .enable_reg = LP8788_EN_LDO_A, 266 .enable_mask = LP8788_EN_DLDO6_M, 267 }, 268 { 269 .name = "dldo7", 270 .id = DLDO7, 271 .ops = &lp8788_ldo_voltage_table_ops, 272 .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl), 273 .volt_table = lp8788_dldo578_aldo6_vtbl, 274 .type = REGULATOR_VOLTAGE, 275 .owner = THIS_MODULE, 276 .vsel_reg = LP8788_DLDO7_VOUT, 277 .vsel_mask = LP8788_VOUT_4BIT_M, 278 .enable_reg = LP8788_EN_LDO_A, 279 .enable_mask = LP8788_EN_DLDO7_M, 280 }, 281 { 282 .name = "dldo8", 283 .id = DLDO8, 284 .ops = &lp8788_ldo_voltage_table_ops, 285 .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl), 286 .volt_table = lp8788_dldo578_aldo6_vtbl, 287 .type = REGULATOR_VOLTAGE, 288 .owner = THIS_MODULE, 289 .vsel_reg = LP8788_DLDO8_VOUT, 290 .vsel_mask = LP8788_VOUT_4BIT_M, 291 .enable_reg = LP8788_EN_LDO_A, 292 .enable_mask = LP8788_EN_DLDO8_M, 293 }, 294 { 295 .name = "dldo9", 296 .id = DLDO9, 297 .ops = &lp8788_ldo_voltage_table_ops, 298 .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl), 299 .volt_table = lp8788_dldo1239_vtbl, 300 .type = REGULATOR_VOLTAGE, 301 .owner = THIS_MODULE, 302 .vsel_reg = LP8788_DLDO9_VOUT, 303 .vsel_mask = LP8788_VOUT_5BIT_M, 304 .enable_reg = LP8788_EN_LDO_B, 305 .enable_mask = LP8788_EN_DLDO9_M, 306 }, 307 { 308 .name = "dldo10", 309 .id = DLDO10, 310 .ops = &lp8788_ldo_voltage_table_ops, 311 .n_voltages = ARRAY_SIZE(lp8788_dldo1011_vtbl), 312 .volt_table = lp8788_dldo1011_vtbl, 313 .type = REGULATOR_VOLTAGE, 314 .owner = THIS_MODULE, 315 .vsel_reg = LP8788_DLDO10_VOUT, 316 .vsel_mask = LP8788_VOUT_4BIT_M, 317 .enable_reg = LP8788_EN_LDO_B, 318 .enable_mask = LP8788_EN_DLDO10_M, 319 }, 320 { 321 .name = "dldo11", 322 .id = DLDO11, 323 .ops = &lp8788_ldo_voltage_table_ops, 324 .n_voltages = ARRAY_SIZE(lp8788_dldo1011_vtbl), 325 .volt_table = lp8788_dldo1011_vtbl, 326 .type = REGULATOR_VOLTAGE, 327 .owner = THIS_MODULE, 328 .vsel_reg = LP8788_DLDO11_VOUT, 329 .vsel_mask = LP8788_VOUT_4BIT_M, 330 .enable_reg = LP8788_EN_LDO_B, 331 .enable_mask = LP8788_EN_DLDO11_M, 332 }, 333 { 334 .name = "dldo12", 335 .id = DLDO12, 336 .ops = &lp8788_ldo_voltage_fixed_ops, 337 .n_voltages = 1, 338 .type = REGULATOR_VOLTAGE, 339 .owner = THIS_MODULE, 340 .enable_reg = LP8788_EN_LDO_B, 341 .enable_mask = LP8788_EN_DLDO12_M, 342 .min_uV = 2500000, 343 }, 344 }; 345 346 static struct regulator_desc lp8788_aldo_desc[] = { 347 { 348 .name = "aldo1", 349 .id = ALDO1, 350 .ops = &lp8788_ldo_voltage_table_ops, 351 .n_voltages = ARRAY_SIZE(lp8788_aldo1_vtbl), 352 .volt_table = lp8788_aldo1_vtbl, 353 .type = REGULATOR_VOLTAGE, 354 .owner = THIS_MODULE, 355 .vsel_reg = LP8788_ALDO1_VOUT, 356 .vsel_mask = LP8788_VOUT_1BIT_M, 357 .enable_reg = LP8788_EN_LDO_B, 358 .enable_mask = LP8788_EN_ALDO1_M, 359 }, 360 { 361 .name = "aldo2", 362 .id = ALDO2, 363 .ops = &lp8788_ldo_voltage_fixed_ops, 364 .n_voltages = 1, 365 .type = REGULATOR_VOLTAGE, 366 .owner = THIS_MODULE, 367 .enable_reg = LP8788_EN_LDO_B, 368 .enable_mask = LP8788_EN_ALDO2_M, 369 .min_uV = 2850000, 370 }, 371 { 372 .name = "aldo3", 373 .id = ALDO3, 374 .ops = &lp8788_ldo_voltage_fixed_ops, 375 .n_voltages = 1, 376 .type = REGULATOR_VOLTAGE, 377 .owner = THIS_MODULE, 378 .enable_reg = LP8788_EN_LDO_B, 379 .enable_mask = LP8788_EN_ALDO3_M, 380 .min_uV = 2850000, 381 }, 382 { 383 .name = "aldo4", 384 .id = ALDO4, 385 .ops = &lp8788_ldo_voltage_fixed_ops, 386 .n_voltages = 1, 387 .type = REGULATOR_VOLTAGE, 388 .owner = THIS_MODULE, 389 .enable_reg = LP8788_EN_LDO_B, 390 .enable_mask = LP8788_EN_ALDO4_M, 391 .min_uV = 2850000, 392 }, 393 { 394 .name = "aldo5", 395 .id = ALDO5, 396 .ops = &lp8788_ldo_voltage_fixed_ops, 397 .n_voltages = 1, 398 .type = REGULATOR_VOLTAGE, 399 .owner = THIS_MODULE, 400 .enable_reg = LP8788_EN_LDO_C, 401 .enable_mask = LP8788_EN_ALDO5_M, 402 .min_uV = 2850000, 403 }, 404 { 405 .name = "aldo6", 406 .id = ALDO6, 407 .ops = &lp8788_ldo_voltage_table_ops, 408 .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl), 409 .volt_table = lp8788_dldo578_aldo6_vtbl, 410 .type = REGULATOR_VOLTAGE, 411 .owner = THIS_MODULE, 412 .vsel_reg = LP8788_ALDO6_VOUT, 413 .vsel_mask = LP8788_VOUT_4BIT_M, 414 .enable_reg = LP8788_EN_LDO_C, 415 .enable_mask = LP8788_EN_ALDO6_M, 416 }, 417 { 418 .name = "aldo7", 419 .id = ALDO7, 420 .ops = &lp8788_ldo_voltage_table_ops, 421 .n_voltages = ARRAY_SIZE(lp8788_aldo7_vtbl), 422 .volt_table = lp8788_aldo7_vtbl, 423 .type = REGULATOR_VOLTAGE, 424 .owner = THIS_MODULE, 425 .vsel_reg = LP8788_ALDO7_VOUT, 426 .vsel_mask = LP8788_VOUT_3BIT_M, 427 .enable_reg = LP8788_EN_LDO_C, 428 .enable_mask = LP8788_EN_ALDO7_M, 429 }, 430 { 431 .name = "aldo8", 432 .id = ALDO8, 433 .ops = &lp8788_ldo_voltage_fixed_ops, 434 .n_voltages = 1, 435 .type = REGULATOR_VOLTAGE, 436 .owner = THIS_MODULE, 437 .enable_reg = LP8788_EN_LDO_C, 438 .enable_mask = LP8788_EN_ALDO8_M, 439 .min_uV = 2500000, 440 }, 441 { 442 .name = "aldo9", 443 .id = ALDO9, 444 .ops = &lp8788_ldo_voltage_fixed_ops, 445 .n_voltages = 1, 446 .type = REGULATOR_VOLTAGE, 447 .owner = THIS_MODULE, 448 .enable_reg = LP8788_EN_LDO_C, 449 .enable_mask = LP8788_EN_ALDO9_M, 450 .min_uV = 2500000, 451 }, 452 { 453 .name = "aldo10", 454 .id = ALDO10, 455 .ops = &lp8788_ldo_voltage_fixed_ops, 456 .n_voltages = 1, 457 .type = REGULATOR_VOLTAGE, 458 .owner = THIS_MODULE, 459 .enable_reg = LP8788_EN_LDO_C, 460 .enable_mask = LP8788_EN_ALDO10_M, 461 .min_uV = 1100000, 462 }, 463 }; 464 465 static int lp8788_config_ldo_enable_mode(struct platform_device *pdev, 466 struct lp8788_ldo *ldo, 467 enum lp8788_ldo_id id) 468 { 469 struct lp8788 *lp = ldo->lp; 470 enum lp8788_ext_ldo_en_id enable_id; 471 u8 en_mask[] = { 472 [EN_ALDO1] = LP8788_EN_SEL_ALDO1_M, 473 [EN_ALDO234] = LP8788_EN_SEL_ALDO234_M, 474 [EN_ALDO5] = LP8788_EN_SEL_ALDO5_M, 475 [EN_ALDO7] = LP8788_EN_SEL_ALDO7_M, 476 [EN_DLDO7] = LP8788_EN_SEL_DLDO7_M, 477 [EN_DLDO911] = LP8788_EN_SEL_DLDO911_M, 478 }; 479 480 switch (id) { 481 case DLDO7: 482 enable_id = EN_DLDO7; 483 break; 484 case DLDO9: 485 case DLDO11: 486 enable_id = EN_DLDO911; 487 break; 488 case ALDO1: 489 enable_id = EN_ALDO1; 490 break; 491 case ALDO2 ... ALDO4: 492 enable_id = EN_ALDO234; 493 break; 494 case ALDO5: 495 enable_id = EN_ALDO5; 496 break; 497 case ALDO7: 498 enable_id = EN_ALDO7; 499 break; 500 default: 501 return 0; 502 } 503 504 /* FIXME: check default mode for GPIO here: high or low? */ 505 ldo->ena_gpiod = devm_gpiod_get_index_optional(&pdev->dev, 506 "enable", 507 enable_id, 508 GPIOD_OUT_HIGH | 509 GPIOD_FLAGS_BIT_NONEXCLUSIVE); 510 if (IS_ERR(ldo->ena_gpiod)) 511 return PTR_ERR(ldo->ena_gpiod); 512 513 /* if no GPIO for ldo pin, then set default enable mode */ 514 if (!ldo->ena_gpiod) 515 goto set_default_ldo_enable_mode; 516 517 return 0; 518 519 set_default_ldo_enable_mode: 520 return lp8788_update_bits(lp, LP8788_EN_SEL, en_mask[enable_id], 0); 521 } 522 523 static int lp8788_dldo_probe(struct platform_device *pdev) 524 { 525 struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent); 526 int id = pdev->id; 527 struct lp8788_ldo *ldo; 528 struct regulator_config cfg = { }; 529 struct regulator_dev *rdev; 530 int ret; 531 532 ldo = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_ldo), GFP_KERNEL); 533 if (!ldo) 534 return -ENOMEM; 535 536 ldo->lp = lp; 537 ret = lp8788_config_ldo_enable_mode(pdev, ldo, id); 538 if (ret) 539 return ret; 540 541 if (ldo->ena_gpiod) 542 cfg.ena_gpiod = ldo->ena_gpiod; 543 544 cfg.dev = pdev->dev.parent; 545 cfg.init_data = lp->pdata ? lp->pdata->dldo_data[id] : NULL; 546 cfg.driver_data = ldo; 547 cfg.regmap = lp->regmap; 548 549 rdev = devm_regulator_register(&pdev->dev, &lp8788_dldo_desc[id], &cfg); 550 if (IS_ERR(rdev)) { 551 ret = PTR_ERR(rdev); 552 dev_err(&pdev->dev, "DLDO%d regulator register err = %d\n", 553 id + 1, ret); 554 return ret; 555 } 556 557 ldo->regulator = rdev; 558 platform_set_drvdata(pdev, ldo); 559 560 return 0; 561 } 562 563 static struct platform_driver lp8788_dldo_driver = { 564 .probe = lp8788_dldo_probe, 565 .driver = { 566 .name = LP8788_DEV_DLDO, 567 }, 568 }; 569 570 static int lp8788_aldo_probe(struct platform_device *pdev) 571 { 572 struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent); 573 int id = pdev->id; 574 struct lp8788_ldo *ldo; 575 struct regulator_config cfg = { }; 576 struct regulator_dev *rdev; 577 int ret; 578 579 ldo = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_ldo), GFP_KERNEL); 580 if (!ldo) 581 return -ENOMEM; 582 583 ldo->lp = lp; 584 ret = lp8788_config_ldo_enable_mode(pdev, ldo, id + ALDO1); 585 if (ret) 586 return ret; 587 588 if (ldo->ena_gpiod) 589 cfg.ena_gpiod = ldo->ena_gpiod; 590 591 cfg.dev = pdev->dev.parent; 592 cfg.init_data = lp->pdata ? lp->pdata->aldo_data[id] : NULL; 593 cfg.driver_data = ldo; 594 cfg.regmap = lp->regmap; 595 596 rdev = devm_regulator_register(&pdev->dev, &lp8788_aldo_desc[id], &cfg); 597 if (IS_ERR(rdev)) { 598 ret = PTR_ERR(rdev); 599 dev_err(&pdev->dev, "ALDO%d regulator register err = %d\n", 600 id + 1, ret); 601 return ret; 602 } 603 604 ldo->regulator = rdev; 605 platform_set_drvdata(pdev, ldo); 606 607 return 0; 608 } 609 610 static struct platform_driver lp8788_aldo_driver = { 611 .probe = lp8788_aldo_probe, 612 .driver = { 613 .name = LP8788_DEV_ALDO, 614 }, 615 }; 616 617 static struct platform_driver * const drivers[] = { 618 &lp8788_dldo_driver, 619 &lp8788_aldo_driver, 620 }; 621 622 static int __init lp8788_ldo_init(void) 623 { 624 return platform_register_drivers(drivers, ARRAY_SIZE(drivers)); 625 } 626 subsys_initcall(lp8788_ldo_init); 627 628 static void __exit lp8788_ldo_exit(void) 629 { 630 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); 631 } 632 module_exit(lp8788_ldo_exit); 633 634 MODULE_DESCRIPTION("TI LP8788 LDO Driver"); 635 MODULE_AUTHOR("Milo Kim"); 636 MODULE_LICENSE("GPL"); 637 MODULE_ALIAS("platform:lp8788-dldo"); 638 MODULE_ALIAS("platform:lp8788-aldo"); 639