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   1 /*
   2  * tps6507x-regulator.c
   3  *
   4  * Regulator driver for TPS65073 PMIC
   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/mfd/tps6507x.h>
  29
  30 /* DCDC's */
  31 #define TPS6507X_DCDC_1                         0
  32 #define TPS6507X_DCDC_2                         1
  33 #define TPS6507X_DCDC_3                         2
  34 /* LDOs */
  35 #define TPS6507X_LDO_1                          3
  36 #define TPS6507X_LDO_2                          4
  37
  38 #define TPS6507X_MAX_REG_ID                     TPS6507X_LDO_2
  39
  40 /* Number of step-down converters available */
  41 #define TPS6507X_NUM_DCDC                       3
  42 /* Number of LDO voltage regulators  available */
  43 #define TPS6507X_NUM_LDO                        2
  44 /* Number of total regulators available */
  45 #define TPS6507X_NUM_REGULATOR          (TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO)
  46
  47 /* Supported voltage values for regulators (in milliVolts) */
  48 static const u16 VDCDCx_VSEL_table[] = {
  49         725, 750, 775, 800,
  50         825, 850, 875, 900,
  51         925, 950, 975, 1000,
  52         1025, 1050, 1075, 1100,
  53         1125, 1150, 1175, 1200,
  54         1225, 1250, 1275, 1300,
  55         1325, 1350, 1375, 1400,
  56         1425, 1450, 1475, 1500,
  57         1550, 1600, 1650, 1700,
  58         1750, 1800, 1850, 1900,
  59         1950, 2000, 2050, 2100,
  60         2150, 2200, 2250, 2300,
  61         2350, 2400, 2450, 2500,
  62         2550, 2600, 2650, 2700,
  63         2750, 2800, 2850, 2900,
  64         3000, 3100, 3200, 3300,
  65 };
  66
  67 static const u16 LDO1_VSEL_table[] = {
  68         1000, 1100, 1200, 1250,
  69         1300, 1350, 1400, 1500,
  70         1600, 1800, 2500, 2750,
  71         2800, 3000, 3100, 3300,
  72 };
  73
  74 static const u16 LDO2_VSEL_table[] = {
  75         725, 750, 775, 800,
  76         825, 850, 875, 900,
  77         925, 950, 975, 1000,
  78         1025, 1050, 1075, 1100,
  79         1125, 1150, 1175, 1200,
  80         1225, 1250, 1275, 1300,
  81         1325, 1350, 1375, 1400,
  82         1425, 1450, 1475, 1500,
  83         1550, 1600, 1650, 1700,
  84         1750, 1800, 1850, 1900,
  85         1950, 2000, 2050, 2100,
  86         2150, 2200, 2250, 2300,
  87         2350, 2400, 2450, 2500,
  88         2550, 2600, 2650, 2700,
  89         2750, 2800, 2850, 2900,
  90         3000, 3100, 3200, 3300,
  91 };
  92
  93 static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDCx_VSEL_table),
  94                                 ARRAY_SIZE(VDCDCx_VSEL_table),
  95                                 ARRAY_SIZE(VDCDCx_VSEL_table),
  96                                 ARRAY_SIZE(LDO1_VSEL_table),
  97                                 ARRAY_SIZE(LDO2_VSEL_table)};
  98
  99 struct tps_info {
 100         const char *name;
 101         unsigned min_uV;
 102         unsigned max_uV;
 103         u8 table_len;
 104         const u16 *table;
 105 };
 106
 107 struct tps6507x_pmic {
 108         struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
 109         struct i2c_client *client;
 110         struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
 111         const struct tps_info *info[TPS6507X_NUM_REGULATOR];
 112         struct mutex io_lock;
 113 };
 114
 115 static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
 116 {
 117         return i2c_smbus_read_byte_data(tps->client, reg);
 118 }
 119
 120 static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
 121 {
 122         return i2c_smbus_write_byte_data(tps->client, reg, val);
 123 }
 124
 125 static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
 126 {
 127         int err, data;
 128
 129         mutex_lock(&tps->io_lock);
 130
 131         data = tps6507x_pmic_read(tps, reg);
 132         if (data < 0) {
 133                 dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
 134                 err = data;
 135                 goto out;
 136         }
 137
 138         data |= mask;
 139         err = tps6507x_pmic_write(tps, reg, data);
 140         if (err)
 141                 dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
 142
 143 out:
 144         mutex_unlock(&tps->io_lock);
 145         return err;
 146 }
 147
 148 static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
 149 {
 150         int err, data;
 151
 152         mutex_lock(&tps->io_lock);
 153
 154         data = tps6507x_pmic_read(tps, reg);
 155         if (data < 0) {
 156                 dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
 157                 err = data;
 158                 goto out;
 159         }
 160
 161         data &= ~mask;
 162         err = tps6507x_pmic_write(tps, reg, data);
 163         if (err)
 164                 dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
 165
 166 out:
 167         mutex_unlock(&tps->io_lock);
 168         return err;
 169 }
 170
 171 static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
 172 {
 173         int data;
 174
 175         mutex_lock(&tps->io_lock);
 176
 177         data = tps6507x_pmic_read(tps, reg);
 178         if (data < 0)
 179                 dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
 180
 181         mutex_unlock(&tps->io_lock);
 182         return data;
 183 }
 184
 185 static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
 186 {
 187         int err;
 188
 189         mutex_lock(&tps->io_lock);
 190
 191         err = tps6507x_pmic_write(tps, reg, val);
 192         if (err < 0)
 193                 dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
 194
 195         mutex_unlock(&tps->io_lock);
 196         return err;
 197 }
 198
 199 static int tps6507x_pmic_dcdc_is_enabled(struct regulator_dev *dev)
 200 {
 201         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 202         int data, dcdc = rdev_get_id(dev);
 203         u8 shift;
 204
 205         if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
 206                 return -EINVAL;
 207
 208         shift = TPS6507X_MAX_REG_ID - dcdc;
 209         data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
 210
 211         if (data < 0)
 212                 return data;
 213         else
 214                 return (data & 1<<shift) ? 1 : 0;
 215 }
 216
 217 static int tps6507x_pmic_ldo_is_enabled(struct regulator_dev *dev)
 218 {
 219         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 220         int data, ldo = rdev_get_id(dev);
 221         u8 shift;
 222
 223         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
 224                 return -EINVAL;
 225
 226         shift = TPS6507X_MAX_REG_ID - ldo;
 227         data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
 228
 229         if (data < 0)
 230                 return data;
 231         else
 232                 return (data & 1<<shift) ? 1 : 0;
 233 }
 234
 235 static int tps6507x_pmic_dcdc_enable(struct regulator_dev *dev)
 236 {
 237         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 238         int dcdc = rdev_get_id(dev);
 239         u8 shift;
 240
 241         if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
 242                 return -EINVAL;
 243
 244         shift = TPS6507X_MAX_REG_ID - dcdc;
 245         return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
 246 }
 247
 248 static int tps6507x_pmic_dcdc_disable(struct regulator_dev *dev)
 249 {
 250         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 251         int dcdc = rdev_get_id(dev);
 252         u8 shift;
 253
 254         if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
 255                 return -EINVAL;
 256
 257         shift = TPS6507X_MAX_REG_ID - dcdc;
 258         return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
 259                                         1 << shift);
 260 }
 261
 262 static int tps6507x_pmic_ldo_enable(struct regulator_dev *dev)
 263 {
 264         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 265         int ldo = rdev_get_id(dev);
 266         u8 shift;
 267
 268         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
 269                 return -EINVAL;
 270
 271         shift = TPS6507X_MAX_REG_ID - ldo;
 272         return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
 273 }
 274
 275 static int tps6507x_pmic_ldo_disable(struct regulator_dev *dev)
 276 {
 277         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 278         int ldo = rdev_get_id(dev);
 279         u8 shift;
 280
 281         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
 282                 return -EINVAL;
 283
 284         shift = TPS6507X_MAX_REG_ID - ldo;
 285         return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
 286                                         1 << shift);
 287 }
 288
 289 static int tps6507x_pmic_dcdc_get_voltage(struct regulator_dev *dev)
 290 {
 291         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 292         int data, dcdc = rdev_get_id(dev);
 293         u8 reg;
 294
 295         switch (dcdc) {
 296         case TPS6507X_DCDC_1:
 297                 reg = TPS6507X_REG_DEFDCDC1;
 298                 break;
 299         case TPS6507X_DCDC_2:
 300                 reg = TPS6507X_REG_DEFDCDC2_LOW;
 301                 break;
 302         case TPS6507X_DCDC_3:
 303                 reg = TPS6507X_REG_DEFDCDC3_LOW;
 304                 break;
 305         default:
 306                 return -EINVAL;
 307         }
 308
 309         data = tps6507x_pmic_reg_read(tps, reg);
 310         if (data < 0)
 311                 return data;
 312
 313         data &= TPS6507X_DEFDCDCX_DCDC_MASK;
 314         return tps->info[dcdc]->table[data] * 1000;
 315 }
 316
 317 static int tps6507x_pmic_dcdc_set_voltage(struct regulator_dev *dev,
 318                                 int min_uV, int max_uV)
 319 {
 320         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 321         int data, vsel, dcdc = rdev_get_id(dev);
 322         u8 reg;
 323
 324         switch (dcdc) {
 325         case TPS6507X_DCDC_1:
 326                 reg = TPS6507X_REG_DEFDCDC1;
 327                 break;
 328         case TPS6507X_DCDC_2:
 329                 reg = TPS6507X_REG_DEFDCDC2_LOW;
 330                 break;
 331         case TPS6507X_DCDC_3:
 332                 reg = TPS6507X_REG_DEFDCDC3_LOW;
 333                 break;
 334         default:
 335                 return -EINVAL;
 336         }
 337
 338         if (min_uV < tps->info[dcdc]->min_uV
 339                 || min_uV > tps->info[dcdc]->max_uV)
 340                 return -EINVAL;
 341         if (max_uV < tps->info[dcdc]->min_uV
 342                 || max_uV > tps->info[dcdc]->max_uV)
 343                 return -EINVAL;
 344
 345         for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
 346                 int mV = tps->info[dcdc]->table[vsel];
 347                 int uV = mV * 1000;
 348
 349                 /* Break at the first in-range value */
 350                 if (min_uV <= uV && uV <= max_uV)
 351                         break;
 352         }
 353
 354         /* write to the register in case we found a match */
 355         if (vsel == tps->info[dcdc]->table_len)
 356                 return -EINVAL;
 357
 358         data = tps6507x_pmic_reg_read(tps, reg);
 359         if (data < 0)
 360                 return data;
 361
 362         data &= ~TPS6507X_DEFDCDCX_DCDC_MASK;
 363         data |= vsel;
 364
 365         return tps6507x_pmic_reg_write(tps, reg, data);
 366 }
 367
 368 static int tps6507x_pmic_ldo_get_voltage(struct regulator_dev *dev)
 369 {
 370         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 371         int data, ldo = rdev_get_id(dev);
 372         u8 reg, mask;
 373
 374         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
 375                 return -EINVAL;
 376         else {
 377                 reg = (ldo == TPS6507X_LDO_1 ?
 378                         TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
 379                 mask = (ldo == TPS6507X_LDO_1 ?
 380                         TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
 381                                 TPS6507X_REG_DEFLDO2_LDO2_MASK);
 382         }
 383
 384         data = tps6507x_pmic_reg_read(tps, reg);
 385         if (data < 0)
 386                 return data;
 387
 388         data &= mask;
 389         return tps->info[ldo]->table[data] * 1000;
 390 }
 391
 392 static int tps6507x_pmic_ldo_set_voltage(struct regulator_dev *dev,
 393                                 int min_uV, int max_uV)
 394 {
 395         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 396         int data, vsel, ldo = rdev_get_id(dev);
 397         u8 reg, mask;
 398
 399         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
 400                 return -EINVAL;
 401         else {
 402                 reg = (ldo == TPS6507X_LDO_1 ?
 403                         TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
 404                 mask = (ldo == TPS6507X_LDO_1 ?
 405                         TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
 406                                 TPS6507X_REG_DEFLDO2_LDO2_MASK);
 407         }
 408
 409         if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV)
 410                 return -EINVAL;
 411         if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV)
 412                 return -EINVAL;
 413
 414         for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
 415                 int mV = tps->info[ldo]->table[vsel];
 416                 int uV = mV * 1000;
 417
 418                 /* Break at the first in-range value */
 419                 if (min_uV <= uV && uV <= max_uV)
 420                         break;
 421         }
 422
 423         if (vsel == tps->info[ldo]->table_len)
 424                 return -EINVAL;
 425
 426         data = tps6507x_pmic_reg_read(tps, reg);
 427         if (data < 0)
 428                 return data;
 429
 430         data &= ~mask;
 431         data |= vsel;
 432
 433         return tps6507x_pmic_reg_write(tps, reg, data);
 434 }
 435
 436 static int tps6507x_pmic_dcdc_list_voltage(struct regulator_dev *dev,
 437                                         unsigned selector)
 438 {
 439         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 440         int dcdc = rdev_get_id(dev);
 441
 442         if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
 443                 return -EINVAL;
 444
 445         if (selector >= tps->info[dcdc]->table_len)
 446                 return -EINVAL;
 447         else
 448                 return tps->info[dcdc]->table[selector] * 1000;
 449 }
 450
 451 static int tps6507x_pmic_ldo_list_voltage(struct regulator_dev *dev,
 452                                         unsigned selector)
 453 {
 454         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
 455         int ldo = rdev_get_id(dev);
 456
 457         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
 458                 return -EINVAL;
 459
 460         if (selector >= tps->info[ldo]->table_len)
 461                 return -EINVAL;
 462         else
 463                 return tps->info[ldo]->table[selector] * 1000;
 464 }
 465
 466 /* Operations permitted on VDCDCx */
 467 static struct regulator_ops tps6507x_pmic_dcdc_ops = {
 468         .is_enabled = tps6507x_pmic_dcdc_is_enabled,
 469         .enable = tps6507x_pmic_dcdc_enable,
 470         .disable = tps6507x_pmic_dcdc_disable,
 471         .get_voltage = tps6507x_pmic_dcdc_get_voltage,
 472         .set_voltage = tps6507x_pmic_dcdc_set_voltage,
 473         .list_voltage = tps6507x_pmic_dcdc_list_voltage,
 474 };
 475
 476 /* Operations permitted on LDOx */
 477 static struct regulator_ops tps6507x_pmic_ldo_ops = {
 478         .is_enabled = tps6507x_pmic_ldo_is_enabled,
 479         .enable = tps6507x_pmic_ldo_enable,
 480         .disable = tps6507x_pmic_ldo_disable,
 481         .get_voltage = tps6507x_pmic_ldo_get_voltage,
 482         .set_voltage = tps6507x_pmic_ldo_set_voltage,
 483         .list_voltage = tps6507x_pmic_ldo_list_voltage,
 484 };
 485
 486 static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
 487                                      const struct i2c_device_id *id)
 488 {
 489         static int desc_id;
 490         const struct tps_info *info = (void *)id->driver_data;
 491         struct regulator_init_data *init_data;
 492         struct regulator_dev *rdev;
 493         struct tps6507x_pmic *tps;
 494         struct tps6507x_board *tps_board;
 495         int i;
 496         int error;
 497
 498         if (!i2c_check_functionality(client->adapter,
 499                                 I2C_FUNC_SMBUS_BYTE_DATA))
 500                 return -EIO;
 501
 502         /**
 503          * tps_board points to pmic related constants
 504          * coming from the board-evm file.
 505          */
 506
 507         tps_board = dev_get_platdata(&client->dev);
 508         if (!tps_board)
 509                 return -EINVAL;
 510
 511         /**
 512          * init_data points to array of regulator_init structures
 513          * coming from the board-evm file.
 514          */
 515         init_data = tps_board->tps6507x_pmic_init_data;
 516         if (!init_data)
 517                 return -EINVAL;
 518
 519         tps = kzalloc(sizeof(*tps), GFP_KERNEL);
 520         if (!tps)
 521                 return -ENOMEM;
 522
 523         mutex_init(&tps->io_lock);
 524
 525         /* common for all regulators */
 526         tps->client = client;
 527
 528         for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
 529                 /* Register the regulators */
 530                 tps->info[i] = info;
 531                 tps->desc[i].name = info->name;
 532                 tps->desc[i].id = desc_id++;
 533                 tps->desc[i].n_voltages = num_voltages[i];
 534                 tps->desc[i].ops = (i > TPS6507X_DCDC_3 ?
 535                 &tps6507x_pmic_ldo_ops : &tps6507x_pmic_dcdc_ops);
 536                 tps->desc[i].type = REGULATOR_VOLTAGE;
 537                 tps->desc[i].owner = THIS_MODULE;
 538
 539                 rdev = regulator_register(&tps->desc[i],
 540                                         &client->dev, init_data, tps);
 541                 if (IS_ERR(rdev)) {
 542                         dev_err(&client->dev, "failed to register %s\n",
 543                                 id->name);
 544                         error = PTR_ERR(rdev);
 545                         goto fail;
 546                 }
 547
 548                 /* Save regulator for cleanup */
 549                 tps->rdev[i] = rdev;
 550         }
 551
 552         i2c_set_clientdata(client, tps);
 553
 554         return 0;
 555
 556 fail:
 557         while (--i >= 0)
 558                 regulator_unregister(tps->rdev[i]);
 559
 560         kfree(tps);
 561         return error;
 562 }
 563
 564 /**
 565  * tps6507x_remove - TPS6507x driver i2c remove handler
 566  * @client: i2c driver client device structure
 567  *
 568  * Unregister TPS driver as an i2c client device driver
 569  */
 570 static int __devexit tps6507x_pmic_remove(struct i2c_client *client)
 571 {
 572         struct tps6507x_pmic *tps = i2c_get_clientdata(client);
 573         int i;
 574
 575         /* clear the client data in i2c */
 576         i2c_set_clientdata(client, NULL);
 577
 578         for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
 579                 regulator_unregister(tps->rdev[i]);
 580
 581         kfree(tps);
 582
 583         return 0;
 584 }
 585
 586 static const struct tps_info tps6507x_pmic_regs[] = {
 587         {
 588                 .name = "VDCDC1",
 589                 .min_uV = 725000,
 590                 .max_uV = 3300000,
 591                 .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
 592                 .table = VDCDCx_VSEL_table,
 593         },
 594         {
 595                 .name = "VDCDC2",
 596                 .min_uV = 725000,
 597                 .max_uV = 3300000,
 598                 .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
 599                 .table = VDCDCx_VSEL_table,
 600         },
 601         {
 602                 .name = "VDCDC3",
 603                 .min_uV = 725000,
 604                 .max_uV = 3300000,
 605                 .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
 606                 .table = VDCDCx_VSEL_table,
 607         },
 608         {
 609                 .name = "LDO1",
 610                 .min_uV = 1000000,
 611                 .max_uV = 3300000,
 612                 .table_len = ARRAY_SIZE(LDO1_VSEL_table),
 613                 .table = LDO1_VSEL_table,
 614         },
 615         {
 616                 .name = "LDO2",
 617                 .min_uV = 725000,
 618                 .max_uV = 3300000,
 619                 .table_len = ARRAY_SIZE(LDO2_VSEL_table),
 620                 .table = LDO2_VSEL_table,
 621         },
 622 };
 623
 624 static const struct i2c_device_id tps6507x_pmic_id[] = {
 625         {.name = "tps6507x",
 626         .driver_data = (unsigned long) tps6507x_pmic_regs,},
 627         { },
 628 };
 629 MODULE_DEVICE_TABLE(i2c, tps6507x_pmic_id);
 630
 631 static struct i2c_driver tps6507x_i2c_driver = {
 632         .driver = {
 633                 .name = "tps6507x",
 634                 .owner = THIS_MODULE,
 635         },
 636         .probe = tps6507x_pmic_probe,
 637         .remove = __devexit_p(tps6507x_pmic_remove),
 638         .id_table = tps6507x_pmic_id,
 639 };
 640
 641 /**
 642  * tps6507x_pmic_init
 643  *
 644  * Module init function
 645  */
 646 static int __init tps6507x_pmic_init(void)
 647 {
 648         return i2c_add_driver(&tps6507x_i2c_driver);
 649 }
 650 subsys_initcall(tps6507x_pmic_init);
 651
 652 /**
 653  * tps6507x_pmic_cleanup
 654  *
 655  * Module exit function
 656  */
 657 static void __exit tps6507x_pmic_cleanup(void)
 658 {
 659         i2c_del_driver(&tps6507x_i2c_driver);
 660 }
 661 module_exit(tps6507x_pmic_cleanup);
 662
 663 MODULE_AUTHOR("Texas Instruments");
 664 MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
 665 MODULE_LICENSE("GPL v2");