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, adm1278, 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 ADM1278_TEMP1_EN BIT(3) 45 #define ADM1278_VIN_EN BIT(2) 46 #define ADM1278_VOUT_EN BIT(1) 47 48 #define ADM1293_IRANGE_25 0 49 #define ADM1293_IRANGE_50 BIT(6) 50 #define ADM1293_IRANGE_100 BIT(7) 51 #define ADM1293_IRANGE_200 (BIT(6) | BIT(7)) 52 #define ADM1293_IRANGE_MASK (BIT(6) | BIT(7)) 53 54 #define ADM1293_VIN_SEL_012 BIT(2) 55 #define ADM1293_VIN_SEL_074 BIT(3) 56 #define ADM1293_VIN_SEL_210 (BIT(2) | BIT(3)) 57 #define ADM1293_VIN_SEL_MASK (BIT(2) | BIT(3)) 58 59 #define ADM1293_VAUX_EN BIT(1) 60 61 #define ADM1278_PEAK_TEMP 0xd7 62 #define ADM1275_IOUT_WARN2_LIMIT 0xd7 63 #define ADM1275_DEVICE_CONFIG 0xd8 64 65 #define ADM1275_IOUT_WARN2_SELECT BIT(4) 66 67 #define ADM1276_PEAK_PIN 0xda 68 #define ADM1075_READ_VAUX 0xdd 69 #define ADM1075_VAUX_OV_WARN_LIMIT 0xde 70 #define ADM1075_VAUX_UV_WARN_LIMIT 0xdf 71 #define ADM1293_IOUT_MIN 0xe3 72 #define ADM1293_PIN_MIN 0xe4 73 #define ADM1075_VAUX_STATUS 0xf6 74 75 #define ADM1075_VAUX_OV_WARN BIT(7) 76 #define ADM1075_VAUX_UV_WARN BIT(6) 77 78 struct adm1275_data { 79 int id; 80 bool have_oc_fault; 81 bool have_uc_fault; 82 bool have_vout; 83 bool have_vaux_status; 84 bool have_mfr_vaux_status; 85 bool have_iout_min; 86 bool have_pin_min; 87 bool have_pin_max; 88 bool have_temp_max; 89 struct pmbus_driver_info info; 90 }; 91 92 #define to_adm1275_data(x) container_of(x, struct adm1275_data, info) 93 94 struct coefficients { 95 s16 m; 96 s16 b; 97 s16 R; 98 }; 99 100 static const struct coefficients adm1075_coefficients[] = { 101 [0] = { 27169, 0, -1 }, /* voltage */ 102 [1] = { 806, 20475, -1 }, /* current, irange25 */ 103 [2] = { 404, 20475, -1 }, /* current, irange50 */ 104 [3] = { 8549, 0, -1 }, /* power, irange25 */ 105 [4] = { 4279, 0, -1 }, /* power, irange50 */ 106 }; 107 108 static const struct coefficients adm1275_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 }; 113 114 static const struct coefficients adm1276_coefficients[] = { 115 [0] = { 19199, 0, -2 }, /* voltage, vrange set */ 116 [1] = { 6720, 0, -1 }, /* voltage, vrange not set */ 117 [2] = { 807, 20475, -1 }, /* current */ 118 [3] = { 6043, 0, -2 }, /* power, vrange set */ 119 [4] = { 2115, 0, -1 }, /* power, vrange not set */ 120 }; 121 122 static const struct coefficients adm1278_coefficients[] = { 123 [0] = { 19599, 0, -2 }, /* voltage */ 124 [1] = { 800, 20475, -1 }, /* current */ 125 [2] = { 6123, 0, -2 }, /* power */ 126 [3] = { 42, 31880, -1 }, /* temperature */ 127 }; 128 129 static const struct coefficients adm1293_coefficients[] = { 130 [0] = { 3333, -1, 0 }, /* voltage, vrange 1.2V */ 131 [1] = { 5552, -5, -1 }, /* voltage, vrange 7.4V */ 132 [2] = { 19604, -50, -2 }, /* voltage, vrange 21V */ 133 [3] = { 8000, -100, -2 }, /* current, irange25 */ 134 [4] = { 4000, -100, -2 }, /* current, irange50 */ 135 [5] = { 20000, -1000, -3 }, /* current, irange100 */ 136 [6] = { 10000, -1000, -3 }, /* current, irange200 */ 137 [7] = { 10417, 0, -1 }, /* power, 1.2V, irange25 */ 138 [8] = { 5208, 0, -1 }, /* power, 1.2V, irange50 */ 139 [9] = { 26042, 0, -2 }, /* power, 1.2V, irange100 */ 140 [10] = { 13021, 0, -2 }, /* power, 1.2V, irange200 */ 141 [11] = { 17351, 0, -2 }, /* power, 7.4V, irange25 */ 142 [12] = { 8676, 0, -2 }, /* power, 7.4V, irange50 */ 143 [13] = { 4338, 0, -2 }, /* power, 7.4V, irange100 */ 144 [14] = { 21689, 0, -3 }, /* power, 7.4V, irange200 */ 145 [15] = { 6126, 0, -2 }, /* power, 21V, irange25 */ 146 [16] = { 30631, 0, -3 }, /* power, 21V, irange50 */ 147 [17] = { 15316, 0, -3 }, /* power, 21V, irange100 */ 148 [18] = { 7658, 0, -3 }, /* power, 21V, irange200 */ 149 }; 150 151 static int adm1275_read_word_data(struct i2c_client *client, int page, int reg) 152 { 153 const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 154 const struct adm1275_data *data = to_adm1275_data(info); 155 int ret = 0; 156 157 if (page) 158 return -ENXIO; 159 160 switch (reg) { 161 case PMBUS_IOUT_UC_FAULT_LIMIT: 162 if (!data->have_uc_fault) 163 return -ENXIO; 164 ret = pmbus_read_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT); 165 break; 166 case PMBUS_IOUT_OC_FAULT_LIMIT: 167 if (!data->have_oc_fault) 168 return -ENXIO; 169 ret = pmbus_read_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT); 170 break; 171 case PMBUS_VOUT_OV_WARN_LIMIT: 172 if (data->have_vout) 173 return -ENODATA; 174 ret = pmbus_read_word_data(client, 0, 175 ADM1075_VAUX_OV_WARN_LIMIT); 176 break; 177 case PMBUS_VOUT_UV_WARN_LIMIT: 178 if (data->have_vout) 179 return -ENODATA; 180 ret = pmbus_read_word_data(client, 0, 181 ADM1075_VAUX_UV_WARN_LIMIT); 182 break; 183 case PMBUS_READ_VOUT: 184 if (data->have_vout) 185 return -ENODATA; 186 ret = pmbus_read_word_data(client, 0, ADM1075_READ_VAUX); 187 break; 188 case PMBUS_VIRT_READ_IOUT_MIN: 189 if (!data->have_iout_min) 190 return -ENXIO; 191 ret = pmbus_read_word_data(client, 0, ADM1293_IOUT_MIN); 192 break; 193 case PMBUS_VIRT_READ_IOUT_MAX: 194 ret = pmbus_read_word_data(client, 0, ADM1275_PEAK_IOUT); 195 break; 196 case PMBUS_VIRT_READ_VOUT_MAX: 197 ret = pmbus_read_word_data(client, 0, ADM1275_PEAK_VOUT); 198 break; 199 case PMBUS_VIRT_READ_VIN_MAX: 200 ret = pmbus_read_word_data(client, 0, ADM1275_PEAK_VIN); 201 break; 202 case PMBUS_VIRT_READ_PIN_MIN: 203 if (!data->have_pin_min) 204 return -ENXIO; 205 ret = pmbus_read_word_data(client, 0, ADM1293_PIN_MIN); 206 break; 207 case PMBUS_VIRT_READ_PIN_MAX: 208 if (!data->have_pin_max) 209 return -ENXIO; 210 ret = pmbus_read_word_data(client, 0, ADM1276_PEAK_PIN); 211 break; 212 case PMBUS_VIRT_READ_TEMP_MAX: 213 if (!data->have_temp_max) 214 return -ENXIO; 215 ret = pmbus_read_word_data(client, 0, ADM1278_PEAK_TEMP); 216 break; 217 case PMBUS_VIRT_RESET_IOUT_HISTORY: 218 case PMBUS_VIRT_RESET_VOUT_HISTORY: 219 case PMBUS_VIRT_RESET_VIN_HISTORY: 220 break; 221 case PMBUS_VIRT_RESET_PIN_HISTORY: 222 if (!data->have_pin_max) 223 return -ENXIO; 224 break; 225 case PMBUS_VIRT_RESET_TEMP_HISTORY: 226 if (!data->have_temp_max) 227 return -ENXIO; 228 break; 229 default: 230 ret = -ENODATA; 231 break; 232 } 233 return ret; 234 } 235 236 static int adm1275_write_word_data(struct i2c_client *client, int page, int reg, 237 u16 word) 238 { 239 const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 240 const struct adm1275_data *data = to_adm1275_data(info); 241 int ret; 242 243 if (page) 244 return -ENXIO; 245 246 switch (reg) { 247 case PMBUS_IOUT_UC_FAULT_LIMIT: 248 case PMBUS_IOUT_OC_FAULT_LIMIT: 249 ret = pmbus_write_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT, 250 word); 251 break; 252 case PMBUS_VIRT_RESET_IOUT_HISTORY: 253 ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_IOUT, 0); 254 if (!ret && data->have_iout_min) 255 ret = pmbus_write_word_data(client, 0, 256 ADM1293_IOUT_MIN, 0); 257 break; 258 case PMBUS_VIRT_RESET_VOUT_HISTORY: 259 ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VOUT, 0); 260 break; 261 case PMBUS_VIRT_RESET_VIN_HISTORY: 262 ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VIN, 0); 263 break; 264 case PMBUS_VIRT_RESET_PIN_HISTORY: 265 ret = pmbus_write_word_data(client, 0, ADM1276_PEAK_PIN, 0); 266 if (!ret && data->have_pin_min) 267 ret = pmbus_write_word_data(client, 0, 268 ADM1293_PIN_MIN, 0); 269 break; 270 case PMBUS_VIRT_RESET_TEMP_HISTORY: 271 ret = pmbus_write_word_data(client, 0, ADM1278_PEAK_TEMP, 0); 272 break; 273 default: 274 ret = -ENODATA; 275 break; 276 } 277 return ret; 278 } 279 280 static int adm1275_read_byte_data(struct i2c_client *client, int page, int reg) 281 { 282 const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 283 const struct adm1275_data *data = to_adm1275_data(info); 284 int mfr_status, ret; 285 286 if (page > 0) 287 return -ENXIO; 288 289 switch (reg) { 290 case PMBUS_STATUS_IOUT: 291 ret = pmbus_read_byte_data(client, page, PMBUS_STATUS_IOUT); 292 if (ret < 0) 293 break; 294 if (!data->have_oc_fault && !data->have_uc_fault) 295 break; 296 mfr_status = pmbus_read_byte_data(client, page, 297 PMBUS_STATUS_MFR_SPECIFIC); 298 if (mfr_status < 0) 299 return mfr_status; 300 if (mfr_status & ADM1275_MFR_STATUS_IOUT_WARN2) { 301 ret |= data->have_oc_fault ? 302 PB_IOUT_OC_FAULT : PB_IOUT_UC_FAULT; 303 } 304 break; 305 case PMBUS_STATUS_VOUT: 306 if (data->have_vout) 307 return -ENODATA; 308 ret = 0; 309 if (data->have_vaux_status) { 310 mfr_status = pmbus_read_byte_data(client, 0, 311 ADM1075_VAUX_STATUS); 312 if (mfr_status < 0) 313 return mfr_status; 314 if (mfr_status & ADM1075_VAUX_OV_WARN) 315 ret |= PB_VOLTAGE_OV_WARNING; 316 if (mfr_status & ADM1075_VAUX_UV_WARN) 317 ret |= PB_VOLTAGE_UV_WARNING; 318 } else if (data->have_mfr_vaux_status) { 319 mfr_status = pmbus_read_byte_data(client, page, 320 PMBUS_STATUS_MFR_SPECIFIC); 321 if (mfr_status < 0) 322 return mfr_status; 323 if (mfr_status & ADM1293_MFR_STATUS_VAUX_OV_WARN) 324 ret |= PB_VOLTAGE_OV_WARNING; 325 if (mfr_status & ADM1293_MFR_STATUS_VAUX_UV_WARN) 326 ret |= PB_VOLTAGE_UV_WARNING; 327 } 328 break; 329 default: 330 ret = -ENODATA; 331 break; 332 } 333 return ret; 334 } 335 336 static const struct i2c_device_id adm1275_id[] = { 337 { "adm1075", adm1075 }, 338 { "adm1275", adm1275 }, 339 { "adm1276", adm1276 }, 340 { "adm1278", adm1278 }, 341 { "adm1293", adm1293 }, 342 { "adm1294", adm1294 }, 343 { } 344 }; 345 MODULE_DEVICE_TABLE(i2c, adm1275_id); 346 347 static int adm1275_probe(struct i2c_client *client, 348 const struct i2c_device_id *id) 349 { 350 u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1]; 351 int config, device_config; 352 int ret; 353 struct pmbus_driver_info *info; 354 struct adm1275_data *data; 355 const struct i2c_device_id *mid; 356 const struct coefficients *coefficients; 357 int vindex = -1, voindex = -1, cindex = -1, pindex = -1; 358 int tindex = -1; 359 360 if (!i2c_check_functionality(client->adapter, 361 I2C_FUNC_SMBUS_READ_BYTE_DATA 362 | I2C_FUNC_SMBUS_BLOCK_DATA)) 363 return -ENODEV; 364 365 ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, block_buffer); 366 if (ret < 0) { 367 dev_err(&client->dev, "Failed to read Manufacturer ID\n"); 368 return ret; 369 } 370 if (ret != 3 || strncmp(block_buffer, "ADI", 3)) { 371 dev_err(&client->dev, "Unsupported Manufacturer ID\n"); 372 return -ENODEV; 373 } 374 375 ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer); 376 if (ret < 0) { 377 dev_err(&client->dev, "Failed to read Manufacturer Model\n"); 378 return ret; 379 } 380 for (mid = adm1275_id; mid->name[0]; mid++) { 381 if (!strncasecmp(mid->name, block_buffer, strlen(mid->name))) 382 break; 383 } 384 if (!mid->name[0]) { 385 dev_err(&client->dev, "Unsupported device\n"); 386 return -ENODEV; 387 } 388 389 if (id->driver_data != mid->driver_data) 390 dev_notice(&client->dev, 391 "Device mismatch: Configured %s, detected %s\n", 392 id->name, mid->name); 393 394 config = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG); 395 if (config < 0) 396 return config; 397 398 device_config = i2c_smbus_read_byte_data(client, ADM1275_DEVICE_CONFIG); 399 if (device_config < 0) 400 return device_config; 401 402 data = devm_kzalloc(&client->dev, sizeof(struct adm1275_data), 403 GFP_KERNEL); 404 if (!data) 405 return -ENOMEM; 406 407 data->id = mid->driver_data; 408 409 info = &data->info; 410 411 info->pages = 1; 412 info->format[PSC_VOLTAGE_IN] = direct; 413 info->format[PSC_VOLTAGE_OUT] = direct; 414 info->format[PSC_CURRENT_OUT] = direct; 415 info->format[PSC_POWER] = direct; 416 info->format[PSC_TEMPERATURE] = direct; 417 info->func[0] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT; 418 419 info->read_word_data = adm1275_read_word_data; 420 info->read_byte_data = adm1275_read_byte_data; 421 info->write_word_data = adm1275_write_word_data; 422 423 switch (data->id) { 424 case adm1075: 425 if (device_config & ADM1275_IOUT_WARN2_SELECT) 426 data->have_oc_fault = true; 427 else 428 data->have_uc_fault = true; 429 data->have_pin_max = true; 430 data->have_vaux_status = true; 431 432 coefficients = adm1075_coefficients; 433 vindex = 0; 434 switch (config & ADM1075_IRANGE_MASK) { 435 case ADM1075_IRANGE_25: 436 cindex = 1; 437 pindex = 3; 438 break; 439 case ADM1075_IRANGE_50: 440 cindex = 2; 441 pindex = 4; 442 break; 443 default: 444 dev_err(&client->dev, "Invalid input current range"); 445 break; 446 } 447 448 info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN 449 | PMBUS_HAVE_STATUS_INPUT; 450 if (config & ADM1275_VIN_VOUT_SELECT) 451 info->func[0] |= 452 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 453 break; 454 case adm1275: 455 if (device_config & ADM1275_IOUT_WARN2_SELECT) 456 data->have_oc_fault = true; 457 else 458 data->have_uc_fault = true; 459 data->have_vout = true; 460 461 coefficients = adm1275_coefficients; 462 vindex = (config & ADM1275_VRANGE) ? 0 : 1; 463 cindex = 2; 464 465 if (config & ADM1275_VIN_VOUT_SELECT) 466 info->func[0] |= 467 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 468 else 469 info->func[0] |= 470 PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT; 471 break; 472 case adm1276: 473 if (device_config & ADM1275_IOUT_WARN2_SELECT) 474 data->have_oc_fault = true; 475 else 476 data->have_uc_fault = true; 477 data->have_vout = true; 478 data->have_pin_max = true; 479 480 coefficients = adm1276_coefficients; 481 vindex = (config & ADM1275_VRANGE) ? 0 : 1; 482 cindex = 2; 483 pindex = (config & ADM1275_VRANGE) ? 3 : 4; 484 485 info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN 486 | PMBUS_HAVE_STATUS_INPUT; 487 if (config & ADM1275_VIN_VOUT_SELECT) 488 info->func[0] |= 489 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 490 break; 491 case adm1278: 492 data->have_vout = true; 493 data->have_pin_max = true; 494 data->have_temp_max = true; 495 496 coefficients = adm1278_coefficients; 497 vindex = 0; 498 cindex = 1; 499 pindex = 2; 500 tindex = 3; 501 502 info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | 503 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 504 505 /* Enable VOUT if not enabled (it is disabled by default) */ 506 if (!(config & ADM1278_VOUT_EN)) { 507 config |= ADM1278_VOUT_EN; 508 ret = i2c_smbus_write_byte_data(client, 509 ADM1275_PMON_CONFIG, 510 config); 511 if (ret < 0) { 512 dev_err(&client->dev, 513 "Failed to enable VOUT monitoring\n"); 514 return -ENODEV; 515 } 516 } 517 518 if (config & ADM1278_TEMP1_EN) 519 info->func[0] |= 520 PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; 521 if (config & ADM1278_VIN_EN) 522 info->func[0] |= PMBUS_HAVE_VIN; 523 break; 524 case adm1293: 525 case adm1294: 526 data->have_iout_min = true; 527 data->have_pin_min = true; 528 data->have_pin_max = true; 529 data->have_mfr_vaux_status = true; 530 531 coefficients = adm1293_coefficients; 532 533 voindex = 0; 534 switch (config & ADM1293_VIN_SEL_MASK) { 535 case ADM1293_VIN_SEL_012: /* 1.2V */ 536 vindex = 0; 537 break; 538 case ADM1293_VIN_SEL_074: /* 7.4V */ 539 vindex = 1; 540 break; 541 case ADM1293_VIN_SEL_210: /* 21V */ 542 vindex = 2; 543 break; 544 default: /* disabled */ 545 break; 546 } 547 548 switch (config & ADM1293_IRANGE_MASK) { 549 case ADM1293_IRANGE_25: 550 cindex = 3; 551 break; 552 case ADM1293_IRANGE_50: 553 cindex = 4; 554 break; 555 case ADM1293_IRANGE_100: 556 cindex = 5; 557 break; 558 case ADM1293_IRANGE_200: 559 cindex = 6; 560 break; 561 } 562 563 if (vindex >= 0) 564 pindex = 7 + vindex * 4 + (cindex - 3); 565 566 if (config & ADM1293_VAUX_EN) 567 info->func[0] |= 568 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 569 570 info->func[0] |= PMBUS_HAVE_PIN | 571 PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT; 572 573 break; 574 default: 575 dev_err(&client->dev, "Unsupported device\n"); 576 return -ENODEV; 577 } 578 579 if (voindex < 0) 580 voindex = vindex; 581 if (vindex >= 0) { 582 info->m[PSC_VOLTAGE_IN] = coefficients[vindex].m; 583 info->b[PSC_VOLTAGE_IN] = coefficients[vindex].b; 584 info->R[PSC_VOLTAGE_IN] = coefficients[vindex].R; 585 } 586 if (voindex >= 0) { 587 info->m[PSC_VOLTAGE_OUT] = coefficients[voindex].m; 588 info->b[PSC_VOLTAGE_OUT] = coefficients[voindex].b; 589 info->R[PSC_VOLTAGE_OUT] = coefficients[voindex].R; 590 } 591 if (cindex >= 0) { 592 info->m[PSC_CURRENT_OUT] = coefficients[cindex].m; 593 info->b[PSC_CURRENT_OUT] = coefficients[cindex].b; 594 info->R[PSC_CURRENT_OUT] = coefficients[cindex].R; 595 } 596 if (pindex >= 0) { 597 info->m[PSC_POWER] = coefficients[pindex].m; 598 info->b[PSC_POWER] = coefficients[pindex].b; 599 info->R[PSC_POWER] = coefficients[pindex].R; 600 } 601 if (tindex >= 0) { 602 info->m[PSC_TEMPERATURE] = coefficients[tindex].m; 603 info->b[PSC_TEMPERATURE] = coefficients[tindex].b; 604 info->R[PSC_TEMPERATURE] = coefficients[tindex].R; 605 } 606 607 return pmbus_do_probe(client, id, info); 608 } 609 610 static struct i2c_driver adm1275_driver = { 611 .driver = { 612 .name = "adm1275", 613 }, 614 .probe = adm1275_probe, 615 .remove = pmbus_do_remove, 616 .id_table = adm1275_id, 617 }; 618 619 module_i2c_driver(adm1275_driver); 620 621 MODULE_AUTHOR("Guenter Roeck"); 622 MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1275 and compatibles"); 623 MODULE_LICENSE("GPL"); 624