1 /* 2 * tps65023-regulator.c 3 * 4 * Supports TPS65023 Regulator 5 * 6 * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/ 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation version 2. 11 * 12 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, 13 * whether express or implied; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 */ 17 18 #include <linux/kernel.h> 19 #include <linux/module.h> 20 #include <linux/init.h> 21 #include <linux/err.h> 22 #include <linux/platform_device.h> 23 #include <linux/regulator/driver.h> 24 #include <linux/regulator/machine.h> 25 #include <linux/i2c.h> 26 #include <linux/delay.h> 27 #include <linux/slab.h> 28 #include <linux/regmap.h> 29 30 /* Register definitions */ 31 #define TPS65023_REG_VERSION 0 32 #define TPS65023_REG_PGOODZ 1 33 #define TPS65023_REG_MASK 2 34 #define TPS65023_REG_REG_CTRL 3 35 #define TPS65023_REG_CON_CTRL 4 36 #define TPS65023_REG_CON_CTRL2 5 37 #define TPS65023_REG_DEF_CORE 6 38 #define TPS65023_REG_DEFSLEW 7 39 #define TPS65023_REG_LDO_CTRL 8 40 41 /* PGOODZ bitfields */ 42 #define TPS65023_PGOODZ_PWRFAILZ BIT(7) 43 #define TPS65023_PGOODZ_LOWBATTZ BIT(6) 44 #define TPS65023_PGOODZ_VDCDC1 BIT(5) 45 #define TPS65023_PGOODZ_VDCDC2 BIT(4) 46 #define TPS65023_PGOODZ_VDCDC3 BIT(3) 47 #define TPS65023_PGOODZ_LDO2 BIT(2) 48 #define TPS65023_PGOODZ_LDO1 BIT(1) 49 50 /* MASK bitfields */ 51 #define TPS65023_MASK_PWRFAILZ BIT(7) 52 #define TPS65023_MASK_LOWBATTZ BIT(6) 53 #define TPS65023_MASK_VDCDC1 BIT(5) 54 #define TPS65023_MASK_VDCDC2 BIT(4) 55 #define TPS65023_MASK_VDCDC3 BIT(3) 56 #define TPS65023_MASK_LDO2 BIT(2) 57 #define TPS65023_MASK_LDO1 BIT(1) 58 59 /* REG_CTRL bitfields */ 60 #define TPS65023_REG_CTRL_VDCDC1_EN BIT(5) 61 #define TPS65023_REG_CTRL_VDCDC2_EN BIT(4) 62 #define TPS65023_REG_CTRL_VDCDC3_EN BIT(3) 63 #define TPS65023_REG_CTRL_LDO2_EN BIT(2) 64 #define TPS65023_REG_CTRL_LDO1_EN BIT(1) 65 66 /* REG_CTRL2 bitfields */ 67 #define TPS65023_REG_CTRL2_GO BIT(7) 68 #define TPS65023_REG_CTRL2_CORE_ADJ BIT(6) 69 #define TPS65023_REG_CTRL2_DCDC2 BIT(2) 70 #define TPS65023_REG_CTRL2_DCDC1 BIT(1) 71 #define TPS65023_REG_CTRL2_DCDC3 BIT(0) 72 73 /* LDO_CTRL bitfields */ 74 #define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id) ((ldo_id)*4) 75 #define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id) (0xF0 >> ((ldo_id)*4)) 76 77 /* Number of step-down converters available */ 78 #define TPS65023_NUM_DCDC 3 79 /* Number of LDO voltage regulators available */ 80 #define TPS65023_NUM_LDO 2 81 /* Number of total regulators available */ 82 #define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO) 83 84 /* DCDCs */ 85 #define TPS65023_DCDC_1 0 86 #define TPS65023_DCDC_2 1 87 #define TPS65023_DCDC_3 2 88 /* LDOs */ 89 #define TPS65023_LDO_1 3 90 #define TPS65023_LDO_2 4 91 92 #define TPS65023_MAX_REG_ID TPS65023_LDO_2 93 94 /* Supported voltage values for regulators */ 95 static const u16 VCORE_VSEL_table[] = { 96 800, 825, 850, 875, 97 900, 925, 950, 975, 98 1000, 1025, 1050, 1075, 99 1100, 1125, 1150, 1175, 100 1200, 1225, 1250, 1275, 101 1300, 1325, 1350, 1375, 102 1400, 1425, 1450, 1475, 103 1500, 1525, 1550, 1600, 104 }; 105 106 /* Supported voltage values for LDO regulators for tps65020 */ 107 static const u16 TPS65020_LDO1_VSEL_table[] = { 108 1000, 1050, 1100, 1300, 109 1800, 2500, 3000, 3300, 110 }; 111 112 static const u16 TPS65020_LDO2_VSEL_table[] = { 113 1000, 1050, 1100, 1300, 114 1800, 2500, 3000, 3300, 115 }; 116 117 /* Supported voltage values for LDO regulators 118 * for tps65021 and tps65023 */ 119 static const u16 TPS65023_LDO1_VSEL_table[] = { 120 1000, 1100, 1300, 1800, 121 2200, 2600, 2800, 3150, 122 }; 123 124 static const u16 TPS65023_LDO2_VSEL_table[] = { 125 1050, 1200, 1300, 1800, 126 2500, 2800, 3000, 3300, 127 }; 128 129 /* Regulator specific details */ 130 struct tps_info { 131 const char *name; 132 unsigned min_uV; 133 unsigned max_uV; 134 bool fixed; 135 u8 table_len; 136 const u16 *table; 137 }; 138 139 /* PMIC details */ 140 struct tps_pmic { 141 struct regulator_desc desc[TPS65023_NUM_REGULATOR]; 142 struct i2c_client *client; 143 struct regulator_dev *rdev[TPS65023_NUM_REGULATOR]; 144 const struct tps_info *info[TPS65023_NUM_REGULATOR]; 145 struct regmap *regmap; 146 u8 core_regulator; 147 }; 148 149 /* Struct passed as driver data */ 150 struct tps_driver_data { 151 const struct tps_info *info; 152 u8 core_regulator; 153 }; 154 155 static int tps_65023_set_bits(struct tps_pmic *tps, u8 reg, u8 mask) 156 { 157 return regmap_update_bits(tps->regmap, reg, mask, mask); 158 } 159 160 static int tps_65023_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask) 161 { 162 return regmap_update_bits(tps->regmap, reg, mask, 0); 163 } 164 165 static int tps_65023_reg_read(struct tps_pmic *tps, u8 reg) 166 { 167 unsigned int val; 168 int ret; 169 170 ret = regmap_read(tps->regmap, reg, &val); 171 172 if (ret != 0) 173 return ret; 174 else 175 return val; 176 } 177 178 static int tps_65023_reg_write(struct tps_pmic *tps, u8 reg, u8 val) 179 { 180 return regmap_write(tps->regmap, reg, val); 181 } 182 183 static int tps65023_dcdc_is_enabled(struct regulator_dev *dev) 184 { 185 struct tps_pmic *tps = rdev_get_drvdata(dev); 186 int data, dcdc = rdev_get_id(dev); 187 u8 shift; 188 189 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) 190 return -EINVAL; 191 192 shift = TPS65023_NUM_REGULATOR - dcdc; 193 data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); 194 195 if (data < 0) 196 return data; 197 else 198 return (data & 1<<shift) ? 1 : 0; 199 } 200 201 static int tps65023_ldo_is_enabled(struct regulator_dev *dev) 202 { 203 struct tps_pmic *tps = rdev_get_drvdata(dev); 204 int data, ldo = rdev_get_id(dev); 205 u8 shift; 206 207 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 208 return -EINVAL; 209 210 shift = (ldo == TPS65023_LDO_1 ? 1 : 2); 211 data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); 212 213 if (data < 0) 214 return data; 215 else 216 return (data & 1<<shift) ? 1 : 0; 217 } 218 219 static int tps65023_dcdc_enable(struct regulator_dev *dev) 220 { 221 struct tps_pmic *tps = rdev_get_drvdata(dev); 222 int dcdc = rdev_get_id(dev); 223 u8 shift; 224 225 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) 226 return -EINVAL; 227 228 shift = TPS65023_NUM_REGULATOR - dcdc; 229 return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); 230 } 231 232 static int tps65023_dcdc_disable(struct regulator_dev *dev) 233 { 234 struct tps_pmic *tps = rdev_get_drvdata(dev); 235 int dcdc = rdev_get_id(dev); 236 u8 shift; 237 238 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) 239 return -EINVAL; 240 241 shift = TPS65023_NUM_REGULATOR - dcdc; 242 return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); 243 } 244 245 static int tps65023_ldo_enable(struct regulator_dev *dev) 246 { 247 struct tps_pmic *tps = rdev_get_drvdata(dev); 248 int ldo = rdev_get_id(dev); 249 u8 shift; 250 251 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 252 return -EINVAL; 253 254 shift = (ldo == TPS65023_LDO_1 ? 1 : 2); 255 return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); 256 } 257 258 static int tps65023_ldo_disable(struct regulator_dev *dev) 259 { 260 struct tps_pmic *tps = rdev_get_drvdata(dev); 261 int ldo = rdev_get_id(dev); 262 u8 shift; 263 264 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 265 return -EINVAL; 266 267 shift = (ldo == TPS65023_LDO_1 ? 1 : 2); 268 return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); 269 } 270 271 static int tps65023_dcdc_get_voltage(struct regulator_dev *dev) 272 { 273 struct tps_pmic *tps = rdev_get_drvdata(dev); 274 int data, dcdc = rdev_get_id(dev); 275 276 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) 277 return -EINVAL; 278 279 if (dcdc == tps->core_regulator) { 280 data = tps_65023_reg_read(tps, TPS65023_REG_DEF_CORE); 281 if (data < 0) 282 return data; 283 data &= (tps->info[dcdc]->table_len - 1); 284 return tps->info[dcdc]->table[data] * 1000; 285 } else 286 return tps->info[dcdc]->min_uV; 287 } 288 289 static int tps65023_dcdc_set_voltage(struct regulator_dev *dev, 290 int min_uV, int max_uV, 291 unsigned *selector) 292 { 293 struct tps_pmic *tps = rdev_get_drvdata(dev); 294 int dcdc = rdev_get_id(dev); 295 int vsel; 296 int ret; 297 298 if (dcdc != tps->core_regulator) 299 return -EINVAL; 300 if (min_uV < tps->info[dcdc]->min_uV 301 || min_uV > tps->info[dcdc]->max_uV) 302 return -EINVAL; 303 if (max_uV < tps->info[dcdc]->min_uV 304 || max_uV > tps->info[dcdc]->max_uV) 305 return -EINVAL; 306 307 for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) { 308 int mV = tps->info[dcdc]->table[vsel]; 309 int uV = mV * 1000; 310 311 /* Break at the first in-range value */ 312 if (min_uV <= uV && uV <= max_uV) 313 break; 314 } 315 316 *selector = vsel; 317 318 if (vsel == tps->info[dcdc]->table_len) 319 goto failed; 320 321 ret = tps_65023_reg_write(tps, TPS65023_REG_DEF_CORE, vsel); 322 323 /* Tell the chip that we have changed the value in DEFCORE 324 * and its time to update the core voltage 325 */ 326 tps_65023_set_bits(tps, TPS65023_REG_CON_CTRL2, 327 TPS65023_REG_CTRL2_GO); 328 329 return ret; 330 331 failed: 332 return -EINVAL; 333 } 334 335 static int tps65023_ldo_get_voltage(struct regulator_dev *dev) 336 { 337 struct tps_pmic *tps = rdev_get_drvdata(dev); 338 int data, ldo = rdev_get_id(dev); 339 340 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 341 return -EINVAL; 342 343 data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL); 344 if (data < 0) 345 return data; 346 347 data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1)); 348 data &= (tps->info[ldo]->table_len - 1); 349 return tps->info[ldo]->table[data] * 1000; 350 } 351 352 static int tps65023_ldo_set_voltage(struct regulator_dev *dev, 353 int min_uV, int max_uV, unsigned *selector) 354 { 355 struct tps_pmic *tps = rdev_get_drvdata(dev); 356 int data, vsel, ldo = rdev_get_id(dev); 357 358 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 359 return -EINVAL; 360 361 if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV) 362 return -EINVAL; 363 if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV) 364 return -EINVAL; 365 366 for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) { 367 int mV = tps->info[ldo]->table[vsel]; 368 int uV = mV * 1000; 369 370 /* Break at the first in-range value */ 371 if (min_uV <= uV && uV <= max_uV) 372 break; 373 } 374 375 if (vsel == tps->info[ldo]->table_len) 376 return -EINVAL; 377 378 *selector = vsel; 379 380 data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL); 381 if (data < 0) 382 return data; 383 384 data &= TPS65023_LDO_CTRL_LDOx_MASK(ldo - TPS65023_LDO_1); 385 data |= (vsel << (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1))); 386 return tps_65023_reg_write(tps, TPS65023_REG_LDO_CTRL, data); 387 } 388 389 static int tps65023_dcdc_list_voltage(struct regulator_dev *dev, 390 unsigned selector) 391 { 392 struct tps_pmic *tps = rdev_get_drvdata(dev); 393 int dcdc = rdev_get_id(dev); 394 395 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) 396 return -EINVAL; 397 398 if (dcdc == tps->core_regulator) { 399 if (selector >= tps->info[dcdc]->table_len) 400 return -EINVAL; 401 else 402 return tps->info[dcdc]->table[selector] * 1000; 403 } else 404 return tps->info[dcdc]->min_uV; 405 } 406 407 static int tps65023_ldo_list_voltage(struct regulator_dev *dev, 408 unsigned selector) 409 { 410 struct tps_pmic *tps = rdev_get_drvdata(dev); 411 int ldo = rdev_get_id(dev); 412 413 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 414 return -EINVAL; 415 416 if (selector >= tps->info[ldo]->table_len) 417 return -EINVAL; 418 else 419 return tps->info[ldo]->table[selector] * 1000; 420 } 421 422 /* Operations permitted on VDCDCx */ 423 static struct regulator_ops tps65023_dcdc_ops = { 424 .is_enabled = tps65023_dcdc_is_enabled, 425 .enable = tps65023_dcdc_enable, 426 .disable = tps65023_dcdc_disable, 427 .get_voltage = tps65023_dcdc_get_voltage, 428 .set_voltage = tps65023_dcdc_set_voltage, 429 .list_voltage = tps65023_dcdc_list_voltage, 430 }; 431 432 /* Operations permitted on LDOx */ 433 static struct regulator_ops tps65023_ldo_ops = { 434 .is_enabled = tps65023_ldo_is_enabled, 435 .enable = tps65023_ldo_enable, 436 .disable = tps65023_ldo_disable, 437 .get_voltage = tps65023_ldo_get_voltage, 438 .set_voltage = tps65023_ldo_set_voltage, 439 .list_voltage = tps65023_ldo_list_voltage, 440 }; 441 442 static struct regmap_config tps65023_regmap_config = { 443 .reg_bits = 8, 444 .val_bits = 8, 445 }; 446 447 static int __devinit tps_65023_probe(struct i2c_client *client, 448 const struct i2c_device_id *id) 449 { 450 const struct tps_driver_data *drv_data = (void *)id->driver_data; 451 const struct tps_info *info = drv_data->info; 452 struct regulator_init_data *init_data; 453 struct regulator_dev *rdev; 454 struct tps_pmic *tps; 455 int i; 456 int error; 457 458 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 459 return -EIO; 460 461 /** 462 * init_data points to array of regulator_init structures 463 * coming from the board-evm file. 464 */ 465 init_data = client->dev.platform_data; 466 if (!init_data) 467 return -EIO; 468 469 tps = kzalloc(sizeof(*tps), GFP_KERNEL); 470 if (!tps) 471 return -ENOMEM; 472 473 tps->regmap = regmap_init_i2c(client, &tps65023_regmap_config); 474 if (IS_ERR(tps->regmap)) { 475 error = PTR_ERR(tps->regmap); 476 dev_err(&client->dev, "Failed to allocate register map: %d\n", 477 error); 478 goto fail_alloc; 479 } 480 481 /* common for all regulators */ 482 tps->client = client; 483 tps->core_regulator = drv_data->core_regulator; 484 485 for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) { 486 /* Store regulator specific information */ 487 tps->info[i] = info; 488 489 tps->desc[i].name = info->name; 490 tps->desc[i].id = i; 491 tps->desc[i].n_voltages = info->table_len; 492 tps->desc[i].ops = (i > TPS65023_DCDC_3 ? 493 &tps65023_ldo_ops : &tps65023_dcdc_ops); 494 tps->desc[i].type = REGULATOR_VOLTAGE; 495 tps->desc[i].owner = THIS_MODULE; 496 497 /* Register the regulators */ 498 rdev = regulator_register(&tps->desc[i], &client->dev, 499 init_data, tps); 500 if (IS_ERR(rdev)) { 501 dev_err(&client->dev, "failed to register %s\n", 502 id->name); 503 error = PTR_ERR(rdev); 504 goto fail; 505 } 506 507 /* Save regulator for cleanup */ 508 tps->rdev[i] = rdev; 509 } 510 511 i2c_set_clientdata(client, tps); 512 513 /* Enable setting output voltage by I2C */ 514 tps_65023_clear_bits(tps, TPS65023_REG_CON_CTRL2, 515 TPS65023_REG_CTRL2_CORE_ADJ); 516 517 /* Enable setting output voltage by I2C */ 518 tps_65023_clear_bits(tps, TPS65023_REG_CON_CTRL2, 519 TPS65023_REG_CTRL2_CORE_ADJ); 520 521 return 0; 522 523 fail: 524 while (--i >= 0) 525 regulator_unregister(tps->rdev[i]); 526 527 regmap_exit(tps->regmap); 528 fail_alloc: 529 kfree(tps); 530 return error; 531 } 532 533 /** 534 * tps_65023_remove - TPS65023 driver i2c remove handler 535 * @client: i2c driver client device structure 536 * 537 * Unregister TPS driver as an i2c client device driver 538 */ 539 static int __devexit tps_65023_remove(struct i2c_client *client) 540 { 541 struct tps_pmic *tps = i2c_get_clientdata(client); 542 int i; 543 544 for (i = 0; i < TPS65023_NUM_REGULATOR; i++) 545 regulator_unregister(tps->rdev[i]); 546 547 regmap_exit(tps->regmap); 548 kfree(tps); 549 550 return 0; 551 } 552 553 static const struct tps_info tps65020_regs[] = { 554 { 555 .name = "VDCDC1", 556 .min_uV = 3300000, 557 .max_uV = 3300000, 558 .fixed = 1, 559 }, 560 { 561 .name = "VDCDC2", 562 .min_uV = 1800000, 563 .max_uV = 1800000, 564 .fixed = 1, 565 }, 566 { 567 .name = "VDCDC3", 568 .min_uV = 800000, 569 .max_uV = 1600000, 570 .table_len = ARRAY_SIZE(VCORE_VSEL_table), 571 .table = VCORE_VSEL_table, 572 }, 573 574 { 575 .name = "LDO1", 576 .min_uV = 1000000, 577 .max_uV = 3150000, 578 .table_len = ARRAY_SIZE(TPS65020_LDO1_VSEL_table), 579 .table = TPS65020_LDO1_VSEL_table, 580 }, 581 { 582 .name = "LDO2", 583 .min_uV = 1050000, 584 .max_uV = 3300000, 585 .table_len = ARRAY_SIZE(TPS65020_LDO2_VSEL_table), 586 .table = TPS65020_LDO2_VSEL_table, 587 }, 588 }; 589 590 static const struct tps_info tps65021_regs[] = { 591 { 592 .name = "VDCDC1", 593 .min_uV = 3300000, 594 .max_uV = 3300000, 595 .fixed = 1, 596 }, 597 { 598 .name = "VDCDC2", 599 .min_uV = 1800000, 600 .max_uV = 1800000, 601 .fixed = 1, 602 }, 603 { 604 .name = "VDCDC3", 605 .min_uV = 800000, 606 .max_uV = 1600000, 607 .table_len = ARRAY_SIZE(VCORE_VSEL_table), 608 .table = VCORE_VSEL_table, 609 }, 610 { 611 .name = "LDO1", 612 .min_uV = 1000000, 613 .max_uV = 3150000, 614 .table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table), 615 .table = TPS65023_LDO1_VSEL_table, 616 }, 617 { 618 .name = "LDO2", 619 .min_uV = 1050000, 620 .max_uV = 3300000, 621 .table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table), 622 .table = TPS65023_LDO2_VSEL_table, 623 }, 624 }; 625 626 static const struct tps_info tps65023_regs[] = { 627 { 628 .name = "VDCDC1", 629 .min_uV = 800000, 630 .max_uV = 1600000, 631 .table_len = ARRAY_SIZE(VCORE_VSEL_table), 632 .table = VCORE_VSEL_table, 633 }, 634 { 635 .name = "VDCDC2", 636 .min_uV = 3300000, 637 .max_uV = 3300000, 638 .fixed = 1, 639 }, 640 { 641 .name = "VDCDC3", 642 .min_uV = 1800000, 643 .max_uV = 1800000, 644 .fixed = 1, 645 }, 646 { 647 .name = "LDO1", 648 .min_uV = 1000000, 649 .max_uV = 3150000, 650 .table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table), 651 .table = TPS65023_LDO1_VSEL_table, 652 }, 653 { 654 .name = "LDO2", 655 .min_uV = 1050000, 656 .max_uV = 3300000, 657 .table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table), 658 .table = TPS65023_LDO2_VSEL_table, 659 }, 660 }; 661 662 static struct tps_driver_data tps65020_drv_data = { 663 .info = tps65020_regs, 664 .core_regulator = TPS65023_DCDC_3, 665 }; 666 667 static struct tps_driver_data tps65021_drv_data = { 668 .info = tps65021_regs, 669 .core_regulator = TPS65023_DCDC_3, 670 }; 671 672 static struct tps_driver_data tps65023_drv_data = { 673 .info = tps65023_regs, 674 .core_regulator = TPS65023_DCDC_1, 675 }; 676 677 static const struct i2c_device_id tps_65023_id[] = { 678 {.name = "tps65023", 679 .driver_data = (unsigned long) &tps65023_drv_data}, 680 {.name = "tps65021", 681 .driver_data = (unsigned long) &tps65021_drv_data,}, 682 {.name = "tps65020", 683 .driver_data = (unsigned long) &tps65020_drv_data}, 684 { }, 685 }; 686 687 MODULE_DEVICE_TABLE(i2c, tps_65023_id); 688 689 static struct i2c_driver tps_65023_i2c_driver = { 690 .driver = { 691 .name = "tps65023", 692 .owner = THIS_MODULE, 693 }, 694 .probe = tps_65023_probe, 695 .remove = __devexit_p(tps_65023_remove), 696 .id_table = tps_65023_id, 697 }; 698 699 /** 700 * tps_65023_init 701 * 702 * Module init function 703 */ 704 static int __init tps_65023_init(void) 705 { 706 return i2c_add_driver(&tps_65023_i2c_driver); 707 } 708 subsys_initcall(tps_65023_init); 709 710 /** 711 * tps_65023_cleanup 712 * 713 * Module exit function 714 */ 715 static void __exit tps_65023_cleanup(void) 716 { 717 i2c_del_driver(&tps_65023_i2c_driver); 718 } 719 module_exit(tps_65023_cleanup); 720 721 MODULE_AUTHOR("Texas Instruments"); 722 MODULE_DESCRIPTION("TPS65023 voltage regulator driver"); 723 MODULE_LICENSE("GPL v2"); 724