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 */ 95static 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 */ 107static const u16 TPS65020_LDO1_VSEL_table[] = { 108 1000, 1050, 1100, 1300, 109 1800, 2500, 3000, 3300, 110}; 111 112static 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 */ 119static const u16 TPS65023_LDO1_VSEL_table[] = { 120 1000, 1100, 1300, 1800, 121 2200, 2600, 2800, 3150, 122}; 123 124static const u16 TPS65023_LDO2_VSEL_table[] = { 125 1050, 1200, 1300, 1800, 126 2500, 2800, 3000, 3300, 127}; 128 129/* Regulator specific details */ 130struct 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 */ 140struct 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 */ 150struct tps_driver_data { 151 const struct tps_info *info; 152 u8 core_regulator; 153}; 154 155static int tps65023_dcdc_is_enabled(struct regulator_dev *dev) 156{ 157 struct tps_pmic *tps = rdev_get_drvdata(dev); 158 int data, dcdc = rdev_get_id(dev); 159 int ret; 160 u8 shift; 161 162 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) 163 return -EINVAL; 164 165 shift = TPS65023_NUM_REGULATOR - dcdc; 166 ret = regmap_read(tps->regmap, TPS65023_REG_REG_CTRL, &data); 167 168 if (ret != 0) 169 return ret; 170 else 171 return (data & 1<<shift) ? 1 : 0; 172} 173 174static int tps65023_ldo_is_enabled(struct regulator_dev *dev) 175{ 176 struct tps_pmic *tps = rdev_get_drvdata(dev); 177 int data, ldo = rdev_get_id(dev); 178 int ret; 179 u8 shift; 180 181 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 182 return -EINVAL; 183 184 shift = (ldo == TPS65023_LDO_1 ? 1 : 2); 185 ret = regmap_read(tps->regmap, TPS65023_REG_REG_CTRL, &data); 186 187 if (ret != 0) 188 return ret; 189 else 190 return (data & 1<<shift) ? 1 : 0; 191} 192 193static int tps65023_dcdc_enable(struct regulator_dev *dev) 194{ 195 struct tps_pmic *tps = rdev_get_drvdata(dev); 196 int dcdc = rdev_get_id(dev); 197 u8 shift; 198 199 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) 200 return -EINVAL; 201 202 shift = TPS65023_NUM_REGULATOR - dcdc; 203 return regmap_update_bits(tps->regmap, TPS65023_REG_REG_CTRL, 1 << shift, 1 << shift); 204} 205 206static int tps65023_dcdc_disable(struct regulator_dev *dev) 207{ 208 struct tps_pmic *tps = rdev_get_drvdata(dev); 209 int dcdc = rdev_get_id(dev); 210 u8 shift; 211 212 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) 213 return -EINVAL; 214 215 shift = TPS65023_NUM_REGULATOR - dcdc; 216 return regmap_update_bits(tps->regmap, TPS65023_REG_REG_CTRL, 1 << shift, 0); 217} 218 219static int tps65023_ldo_enable(struct regulator_dev *dev) 220{ 221 struct tps_pmic *tps = rdev_get_drvdata(dev); 222 int ldo = rdev_get_id(dev); 223 u8 shift; 224 225 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 226 return -EINVAL; 227 228 shift = (ldo == TPS65023_LDO_1 ? 1 : 2); 229 return regmap_update_bits(tps->regmap, TPS65023_REG_REG_CTRL, 1 << shift, 1 << shift); 230} 231 232static int tps65023_ldo_disable(struct regulator_dev *dev) 233{ 234 struct tps_pmic *tps = rdev_get_drvdata(dev); 235 int ldo = rdev_get_id(dev); 236 u8 shift; 237 238 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 239 return -EINVAL; 240 241 shift = (ldo == TPS65023_LDO_1 ? 1 : 2); 242 return regmap_update_bits(tps->regmap, TPS65023_REG_REG_CTRL, 1 << shift, 0); 243} 244 245static int tps65023_dcdc_get_voltage(struct regulator_dev *dev) 246{ 247 struct tps_pmic *tps = rdev_get_drvdata(dev); 248 int ret; 249 int data, dcdc = rdev_get_id(dev); 250 251 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) 252 return -EINVAL; 253 254 if (dcdc == tps->core_regulator) { 255 ret = regmap_read(tps->regmap, TPS65023_REG_DEF_CORE, &data); 256 if (ret != 0) 257 return ret; 258 data &= (tps->info[dcdc]->table_len - 1); 259 return tps->info[dcdc]->table[data] * 1000; 260 } else 261 return tps->info[dcdc]->min_uV; 262} 263 264static int tps65023_dcdc_set_voltage(struct regulator_dev *dev, 265 int min_uV, int max_uV, 266 unsigned *selector) 267{ 268 struct tps_pmic *tps = rdev_get_drvdata(dev); 269 int dcdc = rdev_get_id(dev); 270 int vsel; 271 int ret; 272 273 if (dcdc != tps->core_regulator) 274 return -EINVAL; 275 if (min_uV < tps->info[dcdc]->min_uV 276 || min_uV > tps->info[dcdc]->max_uV) 277 return -EINVAL; 278 if (max_uV < tps->info[dcdc]->min_uV 279 || max_uV > tps->info[dcdc]->max_uV) 280 return -EINVAL; 281 282 for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) { 283 int mV = tps->info[dcdc]->table[vsel]; 284 int uV = mV * 1000; 285 286 /* Break at the first in-range value */ 287 if (min_uV <= uV && uV <= max_uV) 288 break; 289 } 290 291 *selector = vsel; 292 293 if (vsel == tps->info[dcdc]->table_len) 294 goto failed; 295 296 ret = regmap_write(tps->regmap, TPS65023_REG_DEF_CORE, vsel); 297 298 /* Tell the chip that we have changed the value in DEFCORE 299 * and its time to update the core voltage 300 */ 301 regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2, 302 TPS65023_REG_CTRL2_GO, TPS65023_REG_CTRL2_GO); 303 304 return ret; 305 306failed: 307 return -EINVAL; 308} 309 310static int tps65023_ldo_get_voltage(struct regulator_dev *dev) 311{ 312 struct tps_pmic *tps = rdev_get_drvdata(dev); 313 int data, ldo = rdev_get_id(dev); 314 int ret; 315 316 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 317 return -EINVAL; 318 319 ret = regmap_read(tps->regmap, TPS65023_REG_LDO_CTRL, &data); 320 if (ret != 0) 321 return ret; 322 323 data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1)); 324 data &= (tps->info[ldo]->table_len - 1); 325 return tps->info[ldo]->table[data] * 1000; 326} 327 328static int tps65023_ldo_set_voltage(struct regulator_dev *dev, 329 int min_uV, int max_uV, unsigned *selector) 330{ 331 struct tps_pmic *tps = rdev_get_drvdata(dev); 332 int data, vsel, ldo = rdev_get_id(dev); 333 int ret; 334 335 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 336 return -EINVAL; 337 338 if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV) 339 return -EINVAL; 340 if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV) 341 return -EINVAL; 342 343 for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) { 344 int mV = tps->info[ldo]->table[vsel]; 345 int uV = mV * 1000; 346 347 /* Break at the first in-range value */ 348 if (min_uV <= uV && uV <= max_uV) 349 break; 350 } 351 352 if (vsel == tps->info[ldo]->table_len) 353 return -EINVAL; 354 355 *selector = vsel; 356 357 ret = regmap_read(tps->regmap, TPS65023_REG_LDO_CTRL, &data); 358 if (ret != 0) 359 return ret; 360 361 data &= TPS65023_LDO_CTRL_LDOx_MASK(ldo - TPS65023_LDO_1); 362 data |= (vsel << (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1))); 363 return regmap_write(tps->regmap, TPS65023_REG_LDO_CTRL, data); 364} 365 366static int tps65023_dcdc_list_voltage(struct regulator_dev *dev, 367 unsigned selector) 368{ 369 struct tps_pmic *tps = rdev_get_drvdata(dev); 370 int dcdc = rdev_get_id(dev); 371 372 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) 373 return -EINVAL; 374 375 if (dcdc == tps->core_regulator) { 376 if (selector >= tps->info[dcdc]->table_len) 377 return -EINVAL; 378 else 379 return tps->info[dcdc]->table[selector] * 1000; 380 } else 381 return tps->info[dcdc]->min_uV; 382} 383 384static int tps65023_ldo_list_voltage(struct regulator_dev *dev, 385 unsigned selector) 386{ 387 struct tps_pmic *tps = rdev_get_drvdata(dev); 388 int ldo = rdev_get_id(dev); 389 390 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) 391 return -EINVAL; 392 393 if (selector >= tps->info[ldo]->table_len) 394 return -EINVAL; 395 else 396 return tps->info[ldo]->table[selector] * 1000; 397} 398 399/* Operations permitted on VDCDCx */ 400static struct regulator_ops tps65023_dcdc_ops = { 401 .is_enabled = tps65023_dcdc_is_enabled, 402 .enable = tps65023_dcdc_enable, 403 .disable = tps65023_dcdc_disable, 404 .get_voltage = tps65023_dcdc_get_voltage, 405 .set_voltage = tps65023_dcdc_set_voltage, 406 .list_voltage = tps65023_dcdc_list_voltage, 407}; 408 409/* Operations permitted on LDOx */ 410static struct regulator_ops tps65023_ldo_ops = { 411 .is_enabled = tps65023_ldo_is_enabled, 412 .enable = tps65023_ldo_enable, 413 .disable = tps65023_ldo_disable, 414 .get_voltage = tps65023_ldo_get_voltage, 415 .set_voltage = tps65023_ldo_set_voltage, 416 .list_voltage = tps65023_ldo_list_voltage, 417}; 418 419static struct regmap_config tps65023_regmap_config = { 420 .reg_bits = 8, 421 .val_bits = 8, 422}; 423 424static int __devinit tps_65023_probe(struct i2c_client *client, 425 const struct i2c_device_id *id) 426{ 427 const struct tps_driver_data *drv_data = (void *)id->driver_data; 428 const struct tps_info *info = drv_data->info; 429 struct regulator_init_data *init_data; 430 struct regulator_dev *rdev; 431 struct tps_pmic *tps; 432 int i; 433 int error; 434 435 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 436 return -EIO; 437 438 /** 439 * init_data points to array of regulator_init structures 440 * coming from the board-evm file. 441 */ 442 init_data = client->dev.platform_data; 443 if (!init_data) 444 return -EIO; 445 446 tps = kzalloc(sizeof(*tps), GFP_KERNEL); 447 if (!tps) 448 return -ENOMEM; 449 450 tps->regmap = regmap_init_i2c(client, &tps65023_regmap_config); 451 if (IS_ERR(tps->regmap)) { 452 error = PTR_ERR(tps->regmap); 453 dev_err(&client->dev, "Failed to allocate register map: %d\n", 454 error); 455 goto fail_alloc; 456 } 457 458 /* common for all regulators */ 459 tps->client = client; 460 tps->core_regulator = drv_data->core_regulator; 461 462 for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) { 463 /* Store regulator specific information */ 464 tps->info[i] = info; 465 466 tps->desc[i].name = info->name; 467 tps->desc[i].id = i; 468 tps->desc[i].n_voltages = info->table_len; 469 tps->desc[i].ops = (i > TPS65023_DCDC_3 ? 470 &tps65023_ldo_ops : &tps65023_dcdc_ops); 471 tps->desc[i].type = REGULATOR_VOLTAGE; 472 tps->desc[i].owner = THIS_MODULE; 473 474 /* Register the regulators */ 475 rdev = regulator_register(&tps->desc[i], &client->dev, 476 init_data, tps, NULL); 477 if (IS_ERR(rdev)) { 478 dev_err(&client->dev, "failed to register %s\n", 479 id->name); 480 error = PTR_ERR(rdev); 481 goto fail; 482 } 483 484 /* Save regulator for cleanup */ 485 tps->rdev[i] = rdev; 486 } 487 488 i2c_set_clientdata(client, tps); 489 490 /* Enable setting output voltage by I2C */ 491 regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2, 492 TPS65023_REG_CTRL2_CORE_ADJ, TPS65023_REG_CTRL2_CORE_ADJ); 493 494 return 0; 495 496 fail: 497 while (--i >= 0) 498 regulator_unregister(tps->rdev[i]); 499 500 regmap_exit(tps->regmap); 501 fail_alloc: 502 kfree(tps); 503 return error; 504} 505 506/** 507 * tps_65023_remove - TPS65023 driver i2c remove handler 508 * @client: i2c driver client device structure 509 * 510 * Unregister TPS driver as an i2c client device driver 511 */ 512static int __devexit tps_65023_remove(struct i2c_client *client) 513{ 514 struct tps_pmic *tps = i2c_get_clientdata(client); 515 int i; 516 517 for (i = 0; i < TPS65023_NUM_REGULATOR; i++) 518 regulator_unregister(tps->rdev[i]); 519 520 regmap_exit(tps->regmap); 521 kfree(tps); 522 523 return 0; 524} 525 526static const struct tps_info tps65020_regs[] = { 527 { 528 .name = "VDCDC1", 529 .min_uV = 3300000, 530 .max_uV = 3300000, 531 .fixed = 1, 532 }, 533 { 534 .name = "VDCDC2", 535 .min_uV = 1800000, 536 .max_uV = 1800000, 537 .fixed = 1, 538 }, 539 { 540 .name = "VDCDC3", 541 .min_uV = 800000, 542 .max_uV = 1600000, 543 .table_len = ARRAY_SIZE(VCORE_VSEL_table), 544 .table = VCORE_VSEL_table, 545 }, 546 547 { 548 .name = "LDO1", 549 .min_uV = 1000000, 550 .max_uV = 3150000, 551 .table_len = ARRAY_SIZE(TPS65020_LDO1_VSEL_table), 552 .table = TPS65020_LDO1_VSEL_table, 553 }, 554 { 555 .name = "LDO2", 556 .min_uV = 1050000, 557 .max_uV = 3300000, 558 .table_len = ARRAY_SIZE(TPS65020_LDO2_VSEL_table), 559 .table = TPS65020_LDO2_VSEL_table, 560 }, 561}; 562 563static const struct tps_info tps65021_regs[] = { 564 { 565 .name = "VDCDC1", 566 .min_uV = 3300000, 567 .max_uV = 3300000, 568 .fixed = 1, 569 }, 570 { 571 .name = "VDCDC2", 572 .min_uV = 1800000, 573 .max_uV = 1800000, 574 .fixed = 1, 575 }, 576 { 577 .name = "VDCDC3", 578 .min_uV = 800000, 579 .max_uV = 1600000, 580 .table_len = ARRAY_SIZE(VCORE_VSEL_table), 581 .table = VCORE_VSEL_table, 582 }, 583 { 584 .name = "LDO1", 585 .min_uV = 1000000, 586 .max_uV = 3150000, 587 .table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table), 588 .table = TPS65023_LDO1_VSEL_table, 589 }, 590 { 591 .name = "LDO2", 592 .min_uV = 1050000, 593 .max_uV = 3300000, 594 .table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table), 595 .table = TPS65023_LDO2_VSEL_table, 596 }, 597}; 598 599static const struct tps_info tps65023_regs[] = { 600 { 601 .name = "VDCDC1", 602 .min_uV = 800000, 603 .max_uV = 1600000, 604 .table_len = ARRAY_SIZE(VCORE_VSEL_table), 605 .table = VCORE_VSEL_table, 606 }, 607 { 608 .name = "VDCDC2", 609 .min_uV = 3300000, 610 .max_uV = 3300000, 611 .fixed = 1, 612 }, 613 { 614 .name = "VDCDC3", 615 .min_uV = 1800000, 616 .max_uV = 1800000, 617 .fixed = 1, 618 }, 619 { 620 .name = "LDO1", 621 .min_uV = 1000000, 622 .max_uV = 3150000, 623 .table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table), 624 .table = TPS65023_LDO1_VSEL_table, 625 }, 626 { 627 .name = "LDO2", 628 .min_uV = 1050000, 629 .max_uV = 3300000, 630 .table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table), 631 .table = TPS65023_LDO2_VSEL_table, 632 }, 633}; 634 635static struct tps_driver_data tps65020_drv_data = { 636 .info = tps65020_regs, 637 .core_regulator = TPS65023_DCDC_3, 638}; 639 640static struct tps_driver_data tps65021_drv_data = { 641 .info = tps65021_regs, 642 .core_regulator = TPS65023_DCDC_3, 643}; 644 645static struct tps_driver_data tps65023_drv_data = { 646 .info = tps65023_regs, 647 .core_regulator = TPS65023_DCDC_1, 648}; 649 650static const struct i2c_device_id tps_65023_id[] = { 651 {.name = "tps65023", 652 .driver_data = (unsigned long) &tps65023_drv_data}, 653 {.name = "tps65021", 654 .driver_data = (unsigned long) &tps65021_drv_data,}, 655 {.name = "tps65020", 656 .driver_data = (unsigned long) &tps65020_drv_data}, 657 { }, 658}; 659 660MODULE_DEVICE_TABLE(i2c, tps_65023_id); 661 662static struct i2c_driver tps_65023_i2c_driver = { 663 .driver = { 664 .name = "tps65023", 665 .owner = THIS_MODULE, 666 }, 667 .probe = tps_65023_probe, 668 .remove = __devexit_p(tps_65023_remove), 669 .id_table = tps_65023_id, 670}; 671 672/** 673 * tps_65023_init 674 * 675 * Module init function 676 */ 677static int __init tps_65023_init(void) 678{ 679 return i2c_add_driver(&tps_65023_i2c_driver); 680} 681subsys_initcall(tps_65023_init); 682 683/** 684 * tps_65023_cleanup 685 * 686 * Module exit function 687 */ 688static void __exit tps_65023_cleanup(void) 689{ 690 i2c_del_driver(&tps_65023_i2c_driver); 691} 692module_exit(tps_65023_cleanup); 693 694MODULE_AUTHOR("Texas Instruments"); 695MODULE_DESCRIPTION("TPS65023 voltage regulator driver"); 696MODULE_LICENSE("GPL v2"); 697