1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Hardware monitoring driver for Analog Devices ADM1275 Hot-Swap Controller 4 * and Digital Power Monitor 5 * 6 * Copyright (c) 2011 Ericsson AB. 7 * Copyright (c) 2018 Guenter Roeck 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/init.h> 13 #include <linux/err.h> 14 #include <linux/slab.h> 15 #include <linux/i2c.h> 16 #include <linux/bitops.h> 17 #include "pmbus.h" 18 19 enum chips { adm1075, adm1272, adm1275, adm1276, adm1278, adm1293, adm1294 }; 20 21 #define ADM1275_MFR_STATUS_IOUT_WARN2 BIT(0) 22 #define ADM1293_MFR_STATUS_VAUX_UV_WARN BIT(5) 23 #define ADM1293_MFR_STATUS_VAUX_OV_WARN BIT(6) 24 25 #define ADM1275_PEAK_IOUT 0xd0 26 #define ADM1275_PEAK_VIN 0xd1 27 #define ADM1275_PEAK_VOUT 0xd2 28 #define ADM1275_PMON_CONFIG 0xd4 29 30 #define ADM1275_VIN_VOUT_SELECT BIT(6) 31 #define ADM1275_VRANGE BIT(5) 32 #define ADM1075_IRANGE_50 BIT(4) 33 #define ADM1075_IRANGE_25 BIT(3) 34 #define ADM1075_IRANGE_MASK (BIT(3) | BIT(4)) 35 36 #define ADM1272_IRANGE BIT(0) 37 38 #define ADM1278_TEMP1_EN BIT(3) 39 #define ADM1278_VIN_EN BIT(2) 40 #define ADM1278_VOUT_EN BIT(1) 41 42 #define ADM1293_IRANGE_25 0 43 #define ADM1293_IRANGE_50 BIT(6) 44 #define ADM1293_IRANGE_100 BIT(7) 45 #define ADM1293_IRANGE_200 (BIT(6) | BIT(7)) 46 #define ADM1293_IRANGE_MASK (BIT(6) | BIT(7)) 47 48 #define ADM1293_VIN_SEL_012 BIT(2) 49 #define ADM1293_VIN_SEL_074 BIT(3) 50 #define ADM1293_VIN_SEL_210 (BIT(2) | BIT(3)) 51 #define ADM1293_VIN_SEL_MASK (BIT(2) | BIT(3)) 52 53 #define ADM1293_VAUX_EN BIT(1) 54 55 #define ADM1278_PEAK_TEMP 0xd7 56 #define ADM1275_IOUT_WARN2_LIMIT 0xd7 57 #define ADM1275_DEVICE_CONFIG 0xd8 58 59 #define ADM1275_IOUT_WARN2_SELECT BIT(4) 60 61 #define ADM1276_PEAK_PIN 0xda 62 #define ADM1075_READ_VAUX 0xdd 63 #define ADM1075_VAUX_OV_WARN_LIMIT 0xde 64 #define ADM1075_VAUX_UV_WARN_LIMIT 0xdf 65 #define ADM1293_IOUT_MIN 0xe3 66 #define ADM1293_PIN_MIN 0xe4 67 #define ADM1075_VAUX_STATUS 0xf6 68 69 #define ADM1075_VAUX_OV_WARN BIT(7) 70 #define ADM1075_VAUX_UV_WARN BIT(6) 71 72 struct adm1275_data { 73 int id; 74 bool have_oc_fault; 75 bool have_uc_fault; 76 bool have_vout; 77 bool have_vaux_status; 78 bool have_mfr_vaux_status; 79 bool have_iout_min; 80 bool have_pin_min; 81 bool have_pin_max; 82 bool have_temp_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] = { 8549, 0, -1 }, /* power, irange25 */ 99 [4] = { 4279, 0, -1 }, /* power, irange50 */ 100 }; 101 102 static const struct coefficients adm1272_coefficients[] = { 103 [0] = { 6770, 0, -2 }, /* voltage, vrange 60V */ 104 [1] = { 4062, 0, -2 }, /* voltage, vrange 100V */ 105 [2] = { 1326, 20480, -1 }, /* current, vsense range 15mV */ 106 [3] = { 663, 20480, -1 }, /* current, vsense range 30mV */ 107 [4] = { 3512, 0, -2 }, /* power, vrange 60V, irange 15mV */ 108 [5] = { 21071, 0, -3 }, /* power, vrange 100V, irange 15mV */ 109 [6] = { 17561, 0, -3 }, /* power, vrange 60V, irange 30mV */ 110 [7] = { 10535, 0, -3 }, /* power, vrange 100V, irange 30mV */ 111 [8] = { 42, 31871, -1 }, /* temperature */ 112 113 }; 114 115 static const struct coefficients adm1275_coefficients[] = { 116 [0] = { 19199, 0, -2 }, /* voltage, vrange set */ 117 [1] = { 6720, 0, -1 }, /* voltage, vrange not set */ 118 [2] = { 807, 20475, -1 }, /* current */ 119 }; 120 121 static const struct coefficients adm1276_coefficients[] = { 122 [0] = { 19199, 0, -2 }, /* voltage, vrange set */ 123 [1] = { 6720, 0, -1 }, /* voltage, vrange not set */ 124 [2] = { 807, 20475, -1 }, /* current */ 125 [3] = { 6043, 0, -2 }, /* power, vrange set */ 126 [4] = { 2115, 0, -1 }, /* power, vrange not set */ 127 }; 128 129 static const struct coefficients adm1278_coefficients[] = { 130 [0] = { 19599, 0, -2 }, /* voltage */ 131 [1] = { 800, 20475, -1 }, /* current */ 132 [2] = { 6123, 0, -2 }, /* power */ 133 [3] = { 42, 31880, -1 }, /* temperature */ 134 }; 135 136 static const struct coefficients adm1293_coefficients[] = { 137 [0] = { 3333, -1, 0 }, /* voltage, vrange 1.2V */ 138 [1] = { 5552, -5, -1 }, /* voltage, vrange 7.4V */ 139 [2] = { 19604, -50, -2 }, /* voltage, vrange 21V */ 140 [3] = { 8000, -100, -2 }, /* current, irange25 */ 141 [4] = { 4000, -100, -2 }, /* current, irange50 */ 142 [5] = { 20000, -1000, -3 }, /* current, irange100 */ 143 [6] = { 10000, -1000, -3 }, /* current, irange200 */ 144 [7] = { 10417, 0, -1 }, /* power, 1.2V, irange25 */ 145 [8] = { 5208, 0, -1 }, /* power, 1.2V, irange50 */ 146 [9] = { 26042, 0, -2 }, /* power, 1.2V, irange100 */ 147 [10] = { 13021, 0, -2 }, /* power, 1.2V, irange200 */ 148 [11] = { 17351, 0, -2 }, /* power, 7.4V, irange25 */ 149 [12] = { 8676, 0, -2 }, /* power, 7.4V, irange50 */ 150 [13] = { 4338, 0, -2 }, /* power, 7.4V, irange100 */ 151 [14] = { 21689, 0, -3 }, /* power, 7.4V, irange200 */ 152 [15] = { 6126, 0, -2 }, /* power, 21V, irange25 */ 153 [16] = { 30631, 0, -3 }, /* power, 21V, irange50 */ 154 [17] = { 15316, 0, -3 }, /* power, 21V, irange100 */ 155 [18] = { 7658, 0, -3 }, /* power, 21V, irange200 */ 156 }; 157 158 static int adm1275_read_word_data(struct i2c_client *client, int page, int reg) 159 { 160 const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 161 const struct adm1275_data *data = to_adm1275_data(info); 162 int ret = 0; 163 164 if (page > 0) 165 return -ENXIO; 166 167 switch (reg) { 168 case PMBUS_IOUT_UC_FAULT_LIMIT: 169 if (!data->have_uc_fault) 170 return -ENXIO; 171 ret = pmbus_read_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT); 172 break; 173 case PMBUS_IOUT_OC_FAULT_LIMIT: 174 if (!data->have_oc_fault) 175 return -ENXIO; 176 ret = pmbus_read_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT); 177 break; 178 case PMBUS_VOUT_OV_WARN_LIMIT: 179 if (data->have_vout) 180 return -ENODATA; 181 ret = pmbus_read_word_data(client, 0, 182 ADM1075_VAUX_OV_WARN_LIMIT); 183 break; 184 case PMBUS_VOUT_UV_WARN_LIMIT: 185 if (data->have_vout) 186 return -ENODATA; 187 ret = pmbus_read_word_data(client, 0, 188 ADM1075_VAUX_UV_WARN_LIMIT); 189 break; 190 case PMBUS_READ_VOUT: 191 if (data->have_vout) 192 return -ENODATA; 193 ret = pmbus_read_word_data(client, 0, ADM1075_READ_VAUX); 194 break; 195 case PMBUS_VIRT_READ_IOUT_MIN: 196 if (!data->have_iout_min) 197 return -ENXIO; 198 ret = pmbus_read_word_data(client, 0, ADM1293_IOUT_MIN); 199 break; 200 case PMBUS_VIRT_READ_IOUT_MAX: 201 ret = pmbus_read_word_data(client, 0, ADM1275_PEAK_IOUT); 202 break; 203 case PMBUS_VIRT_READ_VOUT_MAX: 204 ret = pmbus_read_word_data(client, 0, ADM1275_PEAK_VOUT); 205 break; 206 case PMBUS_VIRT_READ_VIN_MAX: 207 ret = pmbus_read_word_data(client, 0, ADM1275_PEAK_VIN); 208 break; 209 case PMBUS_VIRT_READ_PIN_MIN: 210 if (!data->have_pin_min) 211 return -ENXIO; 212 ret = pmbus_read_word_data(client, 0, ADM1293_PIN_MIN); 213 break; 214 case PMBUS_VIRT_READ_PIN_MAX: 215 if (!data->have_pin_max) 216 return -ENXIO; 217 ret = pmbus_read_word_data(client, 0, ADM1276_PEAK_PIN); 218 break; 219 case PMBUS_VIRT_READ_TEMP_MAX: 220 if (!data->have_temp_max) 221 return -ENXIO; 222 ret = pmbus_read_word_data(client, 0, ADM1278_PEAK_TEMP); 223 break; 224 case PMBUS_VIRT_RESET_IOUT_HISTORY: 225 case PMBUS_VIRT_RESET_VOUT_HISTORY: 226 case PMBUS_VIRT_RESET_VIN_HISTORY: 227 break; 228 case PMBUS_VIRT_RESET_PIN_HISTORY: 229 if (!data->have_pin_max) 230 return -ENXIO; 231 break; 232 case PMBUS_VIRT_RESET_TEMP_HISTORY: 233 if (!data->have_temp_max) 234 return -ENXIO; 235 break; 236 default: 237 ret = -ENODATA; 238 break; 239 } 240 return ret; 241 } 242 243 static int adm1275_write_word_data(struct i2c_client *client, int page, int reg, 244 u16 word) 245 { 246 const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 247 const struct adm1275_data *data = to_adm1275_data(info); 248 int ret; 249 250 if (page > 0) 251 return -ENXIO; 252 253 switch (reg) { 254 case PMBUS_IOUT_UC_FAULT_LIMIT: 255 case PMBUS_IOUT_OC_FAULT_LIMIT: 256 ret = pmbus_write_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT, 257 word); 258 break; 259 case PMBUS_VIRT_RESET_IOUT_HISTORY: 260 ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_IOUT, 0); 261 if (!ret && data->have_iout_min) 262 ret = pmbus_write_word_data(client, 0, 263 ADM1293_IOUT_MIN, 0); 264 break; 265 case PMBUS_VIRT_RESET_VOUT_HISTORY: 266 ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VOUT, 0); 267 break; 268 case PMBUS_VIRT_RESET_VIN_HISTORY: 269 ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VIN, 0); 270 break; 271 case PMBUS_VIRT_RESET_PIN_HISTORY: 272 ret = pmbus_write_word_data(client, 0, ADM1276_PEAK_PIN, 0); 273 if (!ret && data->have_pin_min) 274 ret = pmbus_write_word_data(client, 0, 275 ADM1293_PIN_MIN, 0); 276 break; 277 case PMBUS_VIRT_RESET_TEMP_HISTORY: 278 ret = pmbus_write_word_data(client, 0, ADM1278_PEAK_TEMP, 0); 279 break; 280 default: 281 ret = -ENODATA; 282 break; 283 } 284 return ret; 285 } 286 287 static int adm1275_read_byte_data(struct i2c_client *client, int page, int reg) 288 { 289 const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 290 const struct adm1275_data *data = to_adm1275_data(info); 291 int mfr_status, ret; 292 293 if (page > 0) 294 return -ENXIO; 295 296 switch (reg) { 297 case PMBUS_STATUS_IOUT: 298 ret = pmbus_read_byte_data(client, page, PMBUS_STATUS_IOUT); 299 if (ret < 0) 300 break; 301 if (!data->have_oc_fault && !data->have_uc_fault) 302 break; 303 mfr_status = pmbus_read_byte_data(client, page, 304 PMBUS_STATUS_MFR_SPECIFIC); 305 if (mfr_status < 0) 306 return mfr_status; 307 if (mfr_status & ADM1275_MFR_STATUS_IOUT_WARN2) { 308 ret |= data->have_oc_fault ? 309 PB_IOUT_OC_FAULT : PB_IOUT_UC_FAULT; 310 } 311 break; 312 case PMBUS_STATUS_VOUT: 313 if (data->have_vout) 314 return -ENODATA; 315 ret = 0; 316 if (data->have_vaux_status) { 317 mfr_status = pmbus_read_byte_data(client, 0, 318 ADM1075_VAUX_STATUS); 319 if (mfr_status < 0) 320 return mfr_status; 321 if (mfr_status & ADM1075_VAUX_OV_WARN) 322 ret |= PB_VOLTAGE_OV_WARNING; 323 if (mfr_status & ADM1075_VAUX_UV_WARN) 324 ret |= PB_VOLTAGE_UV_WARNING; 325 } else if (data->have_mfr_vaux_status) { 326 mfr_status = pmbus_read_byte_data(client, page, 327 PMBUS_STATUS_MFR_SPECIFIC); 328 if (mfr_status < 0) 329 return mfr_status; 330 if (mfr_status & ADM1293_MFR_STATUS_VAUX_OV_WARN) 331 ret |= PB_VOLTAGE_OV_WARNING; 332 if (mfr_status & ADM1293_MFR_STATUS_VAUX_UV_WARN) 333 ret |= PB_VOLTAGE_UV_WARNING; 334 } 335 break; 336 default: 337 ret = -ENODATA; 338 break; 339 } 340 return ret; 341 } 342 343 static const struct i2c_device_id adm1275_id[] = { 344 { "adm1075", adm1075 }, 345 { "adm1272", adm1272 }, 346 { "adm1275", adm1275 }, 347 { "adm1276", adm1276 }, 348 { "adm1278", adm1278 }, 349 { "adm1293", adm1293 }, 350 { "adm1294", adm1294 }, 351 { } 352 }; 353 MODULE_DEVICE_TABLE(i2c, adm1275_id); 354 355 static int adm1275_probe(struct i2c_client *client, 356 const struct i2c_device_id *id) 357 { 358 u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1]; 359 int config, device_config; 360 int ret; 361 struct pmbus_driver_info *info; 362 struct adm1275_data *data; 363 const struct i2c_device_id *mid; 364 const struct coefficients *coefficients; 365 int vindex = -1, voindex = -1, cindex = -1, pindex = -1; 366 int tindex = -1; 367 u32 shunt; 368 369 if (!i2c_check_functionality(client->adapter, 370 I2C_FUNC_SMBUS_READ_BYTE_DATA 371 | I2C_FUNC_SMBUS_BLOCK_DATA)) 372 return -ENODEV; 373 374 ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, block_buffer); 375 if (ret < 0) { 376 dev_err(&client->dev, "Failed to read Manufacturer ID\n"); 377 return ret; 378 } 379 if (ret != 3 || strncmp(block_buffer, "ADI", 3)) { 380 dev_err(&client->dev, "Unsupported Manufacturer ID\n"); 381 return -ENODEV; 382 } 383 384 ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer); 385 if (ret < 0) { 386 dev_err(&client->dev, "Failed to read Manufacturer Model\n"); 387 return ret; 388 } 389 for (mid = adm1275_id; mid->name[0]; mid++) { 390 if (!strncasecmp(mid->name, block_buffer, strlen(mid->name))) 391 break; 392 } 393 if (!mid->name[0]) { 394 dev_err(&client->dev, "Unsupported device\n"); 395 return -ENODEV; 396 } 397 398 if (id->driver_data != mid->driver_data) 399 dev_notice(&client->dev, 400 "Device mismatch: Configured %s, detected %s\n", 401 id->name, mid->name); 402 403 config = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG); 404 if (config < 0) 405 return config; 406 407 device_config = i2c_smbus_read_byte_data(client, ADM1275_DEVICE_CONFIG); 408 if (device_config < 0) 409 return device_config; 410 411 data = devm_kzalloc(&client->dev, sizeof(struct adm1275_data), 412 GFP_KERNEL); 413 if (!data) 414 return -ENOMEM; 415 416 if (of_property_read_u32(client->dev.of_node, 417 "shunt-resistor-micro-ohms", &shunt)) 418 shunt = 1000; /* 1 mOhm if not set via DT */ 419 420 if (shunt == 0) 421 return -EINVAL; 422 423 data->id = mid->driver_data; 424 425 info = &data->info; 426 427 info->pages = 1; 428 info->format[PSC_VOLTAGE_IN] = direct; 429 info->format[PSC_VOLTAGE_OUT] = direct; 430 info->format[PSC_CURRENT_OUT] = direct; 431 info->format[PSC_POWER] = direct; 432 info->format[PSC_TEMPERATURE] = direct; 433 info->func[0] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT; 434 435 info->read_word_data = adm1275_read_word_data; 436 info->read_byte_data = adm1275_read_byte_data; 437 info->write_word_data = adm1275_write_word_data; 438 439 switch (data->id) { 440 case adm1075: 441 if (device_config & ADM1275_IOUT_WARN2_SELECT) 442 data->have_oc_fault = true; 443 else 444 data->have_uc_fault = true; 445 data->have_pin_max = true; 446 data->have_vaux_status = true; 447 448 coefficients = adm1075_coefficients; 449 vindex = 0; 450 switch (config & ADM1075_IRANGE_MASK) { 451 case ADM1075_IRANGE_25: 452 cindex = 1; 453 pindex = 3; 454 break; 455 case ADM1075_IRANGE_50: 456 cindex = 2; 457 pindex = 4; 458 break; 459 default: 460 dev_err(&client->dev, "Invalid input current range"); 461 break; 462 } 463 464 info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN 465 | PMBUS_HAVE_STATUS_INPUT; 466 if (config & ADM1275_VIN_VOUT_SELECT) 467 info->func[0] |= 468 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 469 break; 470 case adm1272: 471 data->have_vout = true; 472 data->have_pin_max = true; 473 data->have_temp_max = true; 474 475 coefficients = adm1272_coefficients; 476 vindex = (config & ADM1275_VRANGE) ? 1 : 0; 477 cindex = (config & ADM1272_IRANGE) ? 3 : 2; 478 /* pindex depends on the combination of the above */ 479 switch (config & (ADM1275_VRANGE | ADM1272_IRANGE)) { 480 case 0: 481 default: 482 pindex = 4; 483 break; 484 case ADM1275_VRANGE: 485 pindex = 5; 486 break; 487 case ADM1272_IRANGE: 488 pindex = 6; 489 break; 490 case ADM1275_VRANGE | ADM1272_IRANGE: 491 pindex = 7; 492 break; 493 } 494 tindex = 8; 495 496 info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | 497 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 498 499 /* Enable VOUT if not enabled (it is disabled by default) */ 500 if (!(config & ADM1278_VOUT_EN)) { 501 config |= ADM1278_VOUT_EN; 502 ret = i2c_smbus_write_byte_data(client, 503 ADM1275_PMON_CONFIG, 504 config); 505 if (ret < 0) { 506 dev_err(&client->dev, 507 "Failed to enable VOUT monitoring\n"); 508 return -ENODEV; 509 } 510 } 511 512 if (config & ADM1278_TEMP1_EN) 513 info->func[0] |= 514 PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; 515 if (config & ADM1278_VIN_EN) 516 info->func[0] |= PMBUS_HAVE_VIN; 517 break; 518 case adm1275: 519 if (device_config & ADM1275_IOUT_WARN2_SELECT) 520 data->have_oc_fault = true; 521 else 522 data->have_uc_fault = true; 523 data->have_vout = true; 524 525 coefficients = adm1275_coefficients; 526 vindex = (config & ADM1275_VRANGE) ? 0 : 1; 527 cindex = 2; 528 529 if (config & ADM1275_VIN_VOUT_SELECT) 530 info->func[0] |= 531 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 532 else 533 info->func[0] |= 534 PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT; 535 break; 536 case adm1276: 537 if (device_config & ADM1275_IOUT_WARN2_SELECT) 538 data->have_oc_fault = true; 539 else 540 data->have_uc_fault = true; 541 data->have_vout = true; 542 data->have_pin_max = true; 543 544 coefficients = adm1276_coefficients; 545 vindex = (config & ADM1275_VRANGE) ? 0 : 1; 546 cindex = 2; 547 pindex = (config & ADM1275_VRANGE) ? 3 : 4; 548 549 info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN 550 | PMBUS_HAVE_STATUS_INPUT; 551 if (config & ADM1275_VIN_VOUT_SELECT) 552 info->func[0] |= 553 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 554 break; 555 case adm1278: 556 data->have_vout = true; 557 data->have_pin_max = true; 558 data->have_temp_max = true; 559 560 coefficients = adm1278_coefficients; 561 vindex = 0; 562 cindex = 1; 563 pindex = 2; 564 tindex = 3; 565 566 info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | 567 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 568 569 /* Enable VOUT if not enabled (it is disabled by default) */ 570 if (!(config & ADM1278_VOUT_EN)) { 571 config |= ADM1278_VOUT_EN; 572 ret = i2c_smbus_write_byte_data(client, 573 ADM1275_PMON_CONFIG, 574 config); 575 if (ret < 0) { 576 dev_err(&client->dev, 577 "Failed to enable VOUT monitoring\n"); 578 return -ENODEV; 579 } 580 } 581 582 if (config & ADM1278_TEMP1_EN) 583 info->func[0] |= 584 PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; 585 if (config & ADM1278_VIN_EN) 586 info->func[0] |= PMBUS_HAVE_VIN; 587 break; 588 case adm1293: 589 case adm1294: 590 data->have_iout_min = true; 591 data->have_pin_min = true; 592 data->have_pin_max = true; 593 data->have_mfr_vaux_status = true; 594 595 coefficients = adm1293_coefficients; 596 597 voindex = 0; 598 switch (config & ADM1293_VIN_SEL_MASK) { 599 case ADM1293_VIN_SEL_012: /* 1.2V */ 600 vindex = 0; 601 break; 602 case ADM1293_VIN_SEL_074: /* 7.4V */ 603 vindex = 1; 604 break; 605 case ADM1293_VIN_SEL_210: /* 21V */ 606 vindex = 2; 607 break; 608 default: /* disabled */ 609 break; 610 } 611 612 switch (config & ADM1293_IRANGE_MASK) { 613 case ADM1293_IRANGE_25: 614 cindex = 3; 615 break; 616 case ADM1293_IRANGE_50: 617 cindex = 4; 618 break; 619 case ADM1293_IRANGE_100: 620 cindex = 5; 621 break; 622 case ADM1293_IRANGE_200: 623 cindex = 6; 624 break; 625 } 626 627 if (vindex >= 0) 628 pindex = 7 + vindex * 4 + (cindex - 3); 629 630 if (config & ADM1293_VAUX_EN) 631 info->func[0] |= 632 PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; 633 634 info->func[0] |= PMBUS_HAVE_PIN | 635 PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT; 636 637 break; 638 default: 639 dev_err(&client->dev, "Unsupported device\n"); 640 return -ENODEV; 641 } 642 643 if (voindex < 0) 644 voindex = vindex; 645 if (vindex >= 0) { 646 info->m[PSC_VOLTAGE_IN] = coefficients[vindex].m; 647 info->b[PSC_VOLTAGE_IN] = coefficients[vindex].b; 648 info->R[PSC_VOLTAGE_IN] = coefficients[vindex].R; 649 } 650 if (voindex >= 0) { 651 info->m[PSC_VOLTAGE_OUT] = coefficients[voindex].m; 652 info->b[PSC_VOLTAGE_OUT] = coefficients[voindex].b; 653 info->R[PSC_VOLTAGE_OUT] = coefficients[voindex].R; 654 } 655 if (cindex >= 0) { 656 /* Scale current with sense resistor value */ 657 info->m[PSC_CURRENT_OUT] = 658 coefficients[cindex].m * shunt / 1000; 659 info->b[PSC_CURRENT_OUT] = coefficients[cindex].b; 660 info->R[PSC_CURRENT_OUT] = coefficients[cindex].R; 661 } 662 if (pindex >= 0) { 663 info->m[PSC_POWER] = 664 coefficients[pindex].m * shunt / 1000; 665 info->b[PSC_POWER] = coefficients[pindex].b; 666 info->R[PSC_POWER] = coefficients[pindex].R; 667 } 668 if (tindex >= 0) { 669 info->m[PSC_TEMPERATURE] = coefficients[tindex].m; 670 info->b[PSC_TEMPERATURE] = coefficients[tindex].b; 671 info->R[PSC_TEMPERATURE] = coefficients[tindex].R; 672 } 673 674 return pmbus_do_probe(client, id, info); 675 } 676 677 static struct i2c_driver adm1275_driver = { 678 .driver = { 679 .name = "adm1275", 680 }, 681 .probe = adm1275_probe, 682 .remove = pmbus_do_remove, 683 .id_table = adm1275_id, 684 }; 685 686 module_i2c_driver(adm1275_driver); 687 688 MODULE_AUTHOR("Guenter Roeck"); 689 MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1275 and compatibles"); 690 MODULE_LICENSE("GPL"); 691