drivers/hwmon/pmbus/adm1275.c

   1 /*
   2  * Hardware monitoring driver for Analog Devices ADM1275 Hot-Swap Controller
   3  * and Digital Power Monitor
   4  *
   5  * Copyright (c) 2011 Ericsson AB.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU 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/slab.h>
  23 #include <linux/i2c.h>
  24 #include <linux/bitops.h>
  25 #include "pmbus.h"
  26
  27 enum chips { adm1075, adm1275, adm1276, adm1293, adm1294 };
  28
  29 #define ADM1275_MFR_STATUS_IOUT_WARN2   BIT(0)
  30 #define ADM1293_MFR_STATUS_VAUX_UV_WARN BIT(5)
  31 #define ADM1293_MFR_STATUS_VAUX_OV_WARN BIT(6)
  32
  33 #define ADM1275_PEAK_IOUT               0xd0
  34 #define ADM1275_PEAK_VIN                0xd1
  35 #define ADM1275_PEAK_VOUT               0xd2
  36 #define ADM1275_PMON_CONFIG             0xd4
  37
  38 #define ADM1275_VIN_VOUT_SELECT         BIT(6)
  39 #define ADM1275_VRANGE                  BIT(5)
  40 #define ADM1075_IRANGE_50               BIT(4)
  41 #define ADM1075_IRANGE_25               BIT(3)
  42 #define ADM1075_IRANGE_MASK             (BIT(3) | BIT(4))
  43
  44 #define ADM1293_IRANGE_25               0
  45 #define ADM1293_IRANGE_50               BIT(6)
  46 #define ADM1293_IRANGE_100              BIT(7)
  47 #define ADM1293_IRANGE_200              (BIT(6) | BIT(7))
  48 #define ADM1293_IRANGE_MASK             (BIT(6) | BIT(7))
  49
  50 #define ADM1293_VIN_SEL_012             BIT(2)
  51 #define ADM1293_VIN_SEL_074             BIT(3)
  52 #define ADM1293_VIN_SEL_210             (BIT(2) | BIT(3))
  53 #define ADM1293_VIN_SEL_MASK            (BIT(2) | BIT(3))
  54
  55 #define ADM1293_VAUX_EN                 BIT(1)
  56
  57 #define ADM1275_IOUT_WARN2_LIMIT        0xd7
  58 #define ADM1275_DEVICE_CONFIG           0xd8
  59
  60 #define ADM1275_IOUT_WARN2_SELECT       BIT(4)
  61
  62 #define ADM1276_PEAK_PIN                0xda
  63 #define ADM1075_READ_VAUX               0xdd
  64 #define ADM1075_VAUX_OV_WARN_LIMIT      0xde
  65 #define ADM1075_VAUX_UV_WARN_LIMIT      0xdf
  66 #define ADM1293_IOUT_MIN                0xe3
  67 #define ADM1293_PIN_MIN                 0xe4
  68 #define ADM1075_VAUX_STATUS             0xf6
  69
  70 #define ADM1075_VAUX_OV_WARN            BIT(7)
  71 #define ADM1075_VAUX_UV_WARN            BIT(6)
  72
  73 struct adm1275_data {
  74         int id;
  75         bool have_oc_fault;
  76         bool have_uc_fault;
  77         bool have_vout;
  78         bool have_vaux_status;
  79         bool have_mfr_vaux_status;
  80         bool have_iout_min;
  81         bool have_pin_min;
  82         bool have_pin_max;
  83         struct pmbus_driver_info info;
  84 };
  85
  86 #define to_adm1275_data(x)  container_of(x, struct adm1275_data, info)
  87
  88 struct coefficients {
  89         s16 m;
  90         s16 b;
  91         s16 R;
  92 };
  93
  94 static const struct coefficients adm1075_coefficients[] = {
  95         [0] = { 27169, 0, -1 },         /* voltage */
  96         [1] = { 806, 20475, -1 },       /* current, irange25 */
  97         [2] = { 404, 20475, -1 },       /* current, irange50 */
  98         [3] = { 0, -1, 8549 },          /* power, irange25 */
  99         [4] = { 0, -1, 4279 },          /* power, irange50 */
 100 };
 101
 102 static const struct coefficients adm1275_coefficients[] = {
 103         [0] = { 19199, 0, -2 },         /* voltage, vrange set */
 104         [1] = { 6720, 0, -1 },          /* voltage, vrange not set */
 105         [2] = { 807, 20475, -1 },       /* current */
 106 };
 107
 108 static const struct coefficients adm1276_coefficients[] = {
 109         [0] = { 19199, 0, -2 },         /* voltage, vrange set */
 110         [1] = { 6720, 0, -1 },          /* voltage, vrange not set */
 111         [2] = { 807, 20475, -1 },       /* current */
 112         [3] = { 6043, 0, -2 },          /* power, vrange set */
 113         [4] = { 2115, 0, -1 },          /* power, vrange not set */
 114 };
 115
 116 static const struct coefficients adm1293_coefficients[] = {
 117         [0] = { 3333, -1, 0 },          /* voltage, vrange 1.2V */
 118         [1] = { 5552, -5, -1 },         /* voltage, vrange 7.4V */
 119         [2] = { 19604, -50, -2 },       /* voltage, vrange 21V */
 120         [3] = { 8000, -100, -2 },       /* current, irange25 */
 121         [4] = { 4000, -100, -2 },       /* current, irange50 */
 122         [5] = { 20000, -1000, -3 },     /* current, irange100 */
 123         [6] = { 10000, -1000, -3 },     /* current, irange200 */
 124         [7] = { 10417, 0, -1 },         /* power, 1.2V, irange25 */
 125         [8] = { 5208, 0, -1 },          /* power, 1.2V, irange50 */
 126         [9] = { 26042, 0, -2 },         /* power, 1.2V, irange100 */
 127         [10] = { 13021, 0, -2 },        /* power, 1.2V, irange200 */
 128         [11] = { 17351, 0, -2 },        /* power, 7.4V, irange25 */
 129         [12] = { 8676, 0, -2 },         /* power, 7.4V, irange50 */
 130         [13] = { 4338, 0, -2 },         /* power, 7.4V, irange100 */
 131         [14] = { 21689, 0, -3 },        /* power, 7.4V, irange200 */
 132         [15] = { 6126, 0, -2 },         /* power, 21V, irange25 */
 133         [16] = { 30631, 0, -3 },        /* power, 21V, irange50 */
 134         [17] = { 15316, 0, -3 },        /* power, 21V, irange100 */
 135         [18] = { 7658, 0, -3 },         /* power, 21V, irange200 */
 136 };
 137
 138 static int adm1275_read_word_data(struct i2c_client *client, int page, int reg)
 139 {
 140         const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
 141         const struct adm1275_data *data = to_adm1275_data(info);
 142         int ret = 0;
 143
 144         if (page)
 145                 return -ENXIO;
 146
 147         switch (reg) {
 148         case PMBUS_IOUT_UC_FAULT_LIMIT:
 149                 if (!data->have_uc_fault)
 150                         return -ENXIO;
 151                 ret = pmbus_read_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT);
 152                 break;
 153         case PMBUS_IOUT_OC_FAULT_LIMIT:
 154                 if (!data->have_oc_fault)
 155                         return -ENXIO;
 156                 ret = pmbus_read_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT);
 157                 break;
 158         case PMBUS_VOUT_OV_WARN_LIMIT:
 159                 if (data->have_vout)
 160                         return -ENODATA;
 161                 ret = pmbus_read_word_data(client, 0,
 162                                            ADM1075_VAUX_OV_WARN_LIMIT);
 163                 break;
 164         case PMBUS_VOUT_UV_WARN_LIMIT:
 165                 if (data->have_vout)
 166                         return -ENODATA;
 167                 ret = pmbus_read_word_data(client, 0,
 168                                            ADM1075_VAUX_UV_WARN_LIMIT);
 169                 break;
 170         case PMBUS_READ_VOUT:
 171                 if (data->have_vout)
 172                         return -ENODATA;
 173                 ret = pmbus_read_word_data(client, 0, ADM1075_READ_VAUX);
 174                 break;
 175         case PMBUS_VIRT_READ_IOUT_MIN:
 176                 if (!data->have_iout_min)
 177                         return -ENXIO;
 178                 ret = pmbus_read_word_data(client, 0, ADM1293_IOUT_MIN);
 179                 break;
 180         case PMBUS_VIRT_READ_IOUT_MAX:
 181                 ret = pmbus_read_word_data(client, 0, ADM1275_PEAK_IOUT);
 182                 break;
 183         case PMBUS_VIRT_READ_VOUT_MAX:
 184                 ret = pmbus_read_word_data(client, 0, ADM1275_PEAK_VOUT);
 185                 break;
 186         case PMBUS_VIRT_READ_VIN_MAX:
 187                 ret = pmbus_read_word_data(client, 0, ADM1275_PEAK_VIN);
 188                 break;
 189         case PMBUS_VIRT_READ_PIN_MIN:
 190                 if (!data->have_pin_min)
 191                         return -ENXIO;
 192                 ret = pmbus_read_word_data(client, 0, ADM1293_PIN_MIN);
 193                 break;
 194         case PMBUS_VIRT_READ_PIN_MAX:
 195                 if (!data->have_pin_max)
 196                         return -ENXIO;
 197                 ret = pmbus_read_word_data(client, 0, ADM1276_PEAK_PIN);
 198                 break;
 199         case PMBUS_VIRT_RESET_IOUT_HISTORY:
 200         case PMBUS_VIRT_RESET_VOUT_HISTORY:
 201         case PMBUS_VIRT_RESET_VIN_HISTORY:
 202                 break;
 203         case PMBUS_VIRT_RESET_PIN_HISTORY:
 204                 if (!data->have_pin_max)
 205                         return -ENXIO;
 206                 break;
 207         default:
 208                 ret = -ENODATA;
 209                 break;
 210         }
 211         return ret;
 212 }
 213
 214 static int adm1275_write_word_data(struct i2c_client *client, int page, int reg,
 215                                    u16 word)
 216 {
 217         const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
 218         const struct adm1275_data *data = to_adm1275_data(info);
 219         int ret;
 220
 221         if (page)
 222                 return -ENXIO;
 223
 224         switch (reg) {
 225         case PMBUS_IOUT_UC_FAULT_LIMIT:
 226         case PMBUS_IOUT_OC_FAULT_LIMIT:
 227                 ret = pmbus_write_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT,
 228                                             word);
 229                 break;
 230         case PMBUS_VIRT_RESET_IOUT_HISTORY:
 231                 ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_IOUT, 0);
 232                 if (!ret && data->have_iout_min)
 233                         ret = pmbus_write_word_data(client, 0,
 234                                                     ADM1293_IOUT_MIN, 0);
 235                 break;
 236         case PMBUS_VIRT_RESET_VOUT_HISTORY:
 237                 ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VOUT, 0);
 238                 break;
 239         case PMBUS_VIRT_RESET_VIN_HISTORY:
 240                 ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VIN, 0);
 241                 break;
 242         case PMBUS_VIRT_RESET_PIN_HISTORY:
 243                 ret = pmbus_write_word_data(client, 0, ADM1276_PEAK_PIN, 0);
 244                 if (!ret && data->have_pin_min)
 245                         ret = pmbus_write_word_data(client, 0,
 246                                                     ADM1293_PIN_MIN, 0);
 247                 break;
 248         default:
 249                 ret = -ENODATA;
 250                 break;
 251         }
 252         return ret;
 253 }
 254
 255 static int adm1275_read_byte_data(struct i2c_client *client, int page, int reg)
 256 {
 257         const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
 258         const struct adm1275_data *data = to_adm1275_data(info);
 259         int mfr_status, ret;
 260
 261         if (page > 0)
 262                 return -ENXIO;
 263
 264         switch (reg) {
 265         case PMBUS_STATUS_IOUT:
 266                 ret = pmbus_read_byte_data(client, page, PMBUS_STATUS_IOUT);
 267                 if (ret < 0)
 268                         break;
 269                 if (!data->have_oc_fault && !data->have_uc_fault)
 270                         break;
 271                 mfr_status = pmbus_read_byte_data(client, page,
 272                                                   PMBUS_STATUS_MFR_SPECIFIC);
 273                 if (mfr_status < 0)
 274                         return mfr_status;
 275                 if (mfr_status & ADM1275_MFR_STATUS_IOUT_WARN2) {
 276                         ret |= data->have_oc_fault ?
 277                           PB_IOUT_OC_FAULT : PB_IOUT_UC_FAULT;
 278                 }
 279                 break;
 280         case PMBUS_STATUS_VOUT:
 281                 if (data->have_vout)
 282                         return -ENODATA;
 283                 ret = 0;
 284                 if (data->have_vaux_status) {
 285                         mfr_status = pmbus_read_byte_data(client, 0,
 286                                                           ADM1075_VAUX_STATUS);
 287                         if (mfr_status < 0)
 288                                 return mfr_status;
 289                         if (mfr_status & ADM1075_VAUX_OV_WARN)
 290                                 ret |= PB_VOLTAGE_OV_WARNING;
 291                         if (mfr_status & ADM1075_VAUX_UV_WARN)
 292                                 ret |= PB_VOLTAGE_UV_WARNING;
 293                 } else if (data->have_mfr_vaux_status) {
 294                         mfr_status = pmbus_read_byte_data(client, page,
 295                                                 PMBUS_STATUS_MFR_SPECIFIC);
 296                         if (mfr_status < 0)
 297                                 return mfr_status;
 298                         if (mfr_status & ADM1293_MFR_STATUS_VAUX_OV_WARN)
 299                                 ret |= PB_VOLTAGE_OV_WARNING;
 300                         if (mfr_status & ADM1293_MFR_STATUS_VAUX_UV_WARN)
 301                                 ret |= PB_VOLTAGE_UV_WARNING;
 302                 }
 303                 break;
 304         default:
 305                 ret = -ENODATA;
 306                 break;
 307         }
 308         return ret;
 309 }
 310
 311 static const struct i2c_device_id adm1275_id[] = {
 312         { "adm1075", adm1075 },
 313         { "adm1275", adm1275 },
 314         { "adm1276", adm1276 },
 315         { "adm1293", adm1293 },
 316         { "adm1294", adm1294 },
 317         { }
 318 };
 319 MODULE_DEVICE_TABLE(i2c, adm1275_id);
 320
 321 static int adm1275_probe(struct i2c_client *client,
 322                          const struct i2c_device_id *id)
 323 {
 324         u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1];
 325         int config, device_config;
 326         int ret;
 327         struct pmbus_driver_info *info;
 328         struct adm1275_data *data;
 329         const struct i2c_device_id *mid;
 330         const struct coefficients *coefficients;
 331         int vindex = -1, voindex = -1, cindex = -1, pindex = -1;
 332
 333         if (!i2c_check_functionality(client->adapter,
 334                                      I2C_FUNC_SMBUS_READ_BYTE_DATA
 335                                      | I2C_FUNC_SMBUS_BLOCK_DATA))
 336                 return -ENODEV;
 337
 338         ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, block_buffer);
 339         if (ret < 0) {
 340                 dev_err(&client->dev, "Failed to read Manufacturer ID\n");
 341                 return ret;
 342         }
 343         if (ret != 3 || strncmp(block_buffer, "ADI", 3)) {
 344                 dev_err(&client->dev, "Unsupported Manufacturer ID\n");
 345                 return -ENODEV;
 346         }
 347
 348         ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer);
 349         if (ret < 0) {
 350                 dev_err(&client->dev, "Failed to read Manufacturer Model\n");
 351                 return ret;
 352         }
 353         for (mid = adm1275_id; mid->name[0]; mid++) {
 354                 if (!strncasecmp(mid->name, block_buffer, strlen(mid->name)))
 355                         break;
 356         }
 357         if (!mid->name[0]) {
 358                 dev_err(&client->dev, "Unsupported device\n");
 359                 return -ENODEV;
 360         }
 361
 362         if (id->driver_data != mid->driver_data)
 363                 dev_notice(&client->dev,
 364                            "Device mismatch: Configured %s, detected %s\n",
 365                            id->name, mid->name);
 366
 367         config = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG);
 368         if (config < 0)
 369                 return config;
 370
 371         device_config = i2c_smbus_read_byte_data(client, ADM1275_DEVICE_CONFIG);
 372         if (device_config < 0)
 373                 return device_config;
 374
 375         data = devm_kzalloc(&client->dev, sizeof(struct adm1275_data),
 376                             GFP_KERNEL);
 377         if (!data)
 378                 return -ENOMEM;
 379
 380         data->id = mid->driver_data;
 381
 382         info = &data->info;
 383
 384         info->pages = 1;
 385         info->format[PSC_VOLTAGE_IN] = direct;
 386         info->format[PSC_VOLTAGE_OUT] = direct;
 387         info->format[PSC_CURRENT_OUT] = direct;
 388         info->format[PSC_POWER] = direct;
 389         info->func[0] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;
 390
 391         info->read_word_data = adm1275_read_word_data;
 392         info->read_byte_data = adm1275_read_byte_data;
 393         info->write_word_data = adm1275_write_word_data;
 394
 395         switch (data->id) {
 396         case adm1075:
 397                 if (device_config & ADM1275_IOUT_WARN2_SELECT)
 398                         data->have_oc_fault = true;
 399                 else
 400                         data->have_uc_fault = true;
 401                 data->have_pin_max = true;
 402                 data->have_vaux_status = true;
 403
 404                 coefficients = adm1075_coefficients;
 405                 vindex = 0;
 406                 switch (config & ADM1075_IRANGE_MASK) {
 407                 case ADM1075_IRANGE_25:
 408                         cindex = 1;
 409                         pindex = 3;
 410                         break;
 411                 case ADM1075_IRANGE_50:
 412                         cindex = 2;
 413                         pindex = 4;
 414                         break;
 415                 default:
 416                         dev_err(&client->dev, "Invalid input current range");
 417                         break;
 418                 }
 419
 420                 info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN
 421                   | PMBUS_HAVE_STATUS_INPUT;
 422                 if (config & ADM1275_VIN_VOUT_SELECT)
 423                         info->func[0] |=
 424                           PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
 425                 break;
 426         case adm1275:
 427                 if (device_config & ADM1275_IOUT_WARN2_SELECT)
 428                         data->have_oc_fault = true;
 429                 else
 430                         data->have_uc_fault = true;
 431                 data->have_vout = true;
 432
 433                 coefficients = adm1275_coefficients;
 434                 vindex = (config & ADM1275_VRANGE) ? 0 : 1;
 435                 cindex = 2;
 436
 437                 if (config & ADM1275_VIN_VOUT_SELECT)
 438                         info->func[0] |=
 439                           PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
 440                 else
 441                         info->func[0] |=
 442                           PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT;
 443                 break;
 444         case adm1276:
 445                 if (device_config & ADM1275_IOUT_WARN2_SELECT)
 446                         data->have_oc_fault = true;
 447                 else
 448                         data->have_uc_fault = true;
 449                 data->have_vout = true;
 450                 data->have_pin_max = true;
 451
 452                 coefficients = adm1276_coefficients;
 453                 vindex = (config & ADM1275_VRANGE) ? 0 : 1;
 454                 cindex = 2;
 455                 pindex = (config & ADM1275_VRANGE) ? 3 : 4;
 456
 457                 info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN
 458                   | PMBUS_HAVE_STATUS_INPUT;
 459                 if (config & ADM1275_VIN_VOUT_SELECT)
 460                         info->func[0] |=
 461                           PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
 462                 break;
 463         case adm1293:
 464         case adm1294:
 465                 data->have_iout_min = true;
 466                 data->have_pin_min = true;
 467                 data->have_pin_max = true;
 468                 data->have_mfr_vaux_status = true;
 469
 470                 coefficients = adm1293_coefficients;
 471
 472                 voindex = 0;
 473                 switch (config & ADM1293_VIN_SEL_MASK) {
 474                 case ADM1293_VIN_SEL_012:       /* 1.2V */
 475                         vindex = 0;
 476                         break;
 477                 case ADM1293_VIN_SEL_074:       /* 7.4V */
 478                         vindex = 1;
 479                         break;
 480                 case ADM1293_VIN_SEL_210:       /* 21V */
 481                         vindex = 2;
 482                         break;
 483                 default:                        /* disabled */
 484                         break;
 485                 }
 486
 487                 switch (config & ADM1293_IRANGE_MASK) {
 488                 case ADM1293_IRANGE_25:
 489                         cindex = 3;
 490                         break;
 491                 case ADM1293_IRANGE_50:
 492                         cindex = 4;
 493                         break;
 494                 case ADM1293_IRANGE_100:
 495                         cindex = 5;
 496                         break;
 497                 case ADM1293_IRANGE_200:
 498                         cindex = 6;
 499                         break;
 500                 }
 501
 502                 if (vindex >= 0)
 503                         pindex = 7 + vindex * 4 + (cindex - 3);
 504
 505                 if (config & ADM1293_VAUX_EN)
 506                         info->func[0] |=
 507                                 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
 508
 509                 info->func[0] |= PMBUS_HAVE_PIN |
 510                         PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT;
 511
 512                 break;
 513         default:
 514                 dev_err(&client->dev, "Unsupported device\n");
 515                 return -ENODEV;
 516         }
 517
 518         if (voindex < 0)
 519                 voindex = vindex;
 520         if (vindex >= 0) {
 521                 info->m[PSC_VOLTAGE_IN] = coefficients[vindex].m;
 522                 info->b[PSC_VOLTAGE_IN] = coefficients[vindex].b;
 523                 info->R[PSC_VOLTAGE_IN] = coefficients[vindex].R;
 524         }
 525         if (voindex >= 0) {
 526                 info->m[PSC_VOLTAGE_OUT] = coefficients[voindex].m;
 527                 info->b[PSC_VOLTAGE_OUT] = coefficients[voindex].b;
 528                 info->R[PSC_VOLTAGE_OUT] = coefficients[voindex].R;
 529         }
 530         if (cindex >= 0) {
 531                 info->m[PSC_CURRENT_OUT] = coefficients[cindex].m;
 532                 info->b[PSC_CURRENT_OUT] = coefficients[cindex].b;
 533                 info->R[PSC_CURRENT_OUT] = coefficients[cindex].R;
 534         }
 535         if (pindex >= 0) {
 536                 info->m[PSC_POWER] = coefficients[pindex].m;
 537                 info->b[PSC_POWER] = coefficients[pindex].b;
 538                 info->R[PSC_POWER] = coefficients[pindex].R;
 539         }
 540
 541         return pmbus_do_probe(client, id, info);
 542 }
 543
 544 static struct i2c_driver adm1275_driver = {
 545         .driver = {
 546                    .name = "adm1275",
 547                    },
 548         .probe = adm1275_probe,
 549         .remove = pmbus_do_remove,
 550         .id_table = adm1275_id,
 551 };
 552
 553 module_i2c_driver(adm1275_driver);
 554
 555 MODULE_AUTHOR("Guenter Roeck");
 556 MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1275 and compatibles");
 557 MODULE_LICENSE("GPL");