1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Hardware monitoring driver for Maxim MAX34440/MAX34441 4 * 5 * Copyright (c) 2011 Ericsson AB. 6 * Copyright (c) 2012 Guenter Roeck 7 */ 8 9 #include <linux/bitops.h> 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/init.h> 13 #include <linux/err.h> 14 #include <linux/i2c.h> 15 #include <linux/delay.h> 16 #include "pmbus.h" 17 18 enum chips { 19 adpm12160, 20 adpm12200, 21 max34440, 22 max34441, 23 max34446, 24 max34451, 25 max34460, 26 max34461, 27 }; 28 29 /* 30 * Firmware is sometimes not ready if we try and read the 31 * data from the page immediately after setting. Maxim 32 * recommends 50us delay due to the chip failing to clock 33 * stretch long enough here. 34 */ 35 #define MAX34440_PAGE_CHANGE_DELAY 50 36 37 #define MAX34440_MFR_VOUT_PEAK 0xd4 38 #define MAX34440_MFR_IOUT_PEAK 0xd5 39 #define MAX34440_MFR_TEMPERATURE_PEAK 0xd6 40 #define MAX34440_MFR_VOUT_MIN 0xd7 41 42 #define MAX34446_MFR_POUT_PEAK 0xe0 43 #define MAX34446_MFR_POUT_AVG 0xe1 44 #define MAX34446_MFR_IOUT_AVG 0xe2 45 #define MAX34446_MFR_TEMPERATURE_AVG 0xe3 46 47 #define MAX34440_STATUS_OC_WARN BIT(0) 48 #define MAX34440_STATUS_OC_FAULT BIT(1) 49 #define MAX34440_STATUS_OT_FAULT BIT(5) 50 #define MAX34440_STATUS_OT_WARN BIT(6) 51 52 /* 53 * The whole max344* family have IOUT_OC_WARN_LIMIT and IOUT_OC_FAULT_LIMIT 54 * swapped from the standard pmbus spec addresses. 55 * For max34451, version MAX34451ETNA6+ and later has this issue fixed. 56 */ 57 #define MAX34440_IOUT_OC_WARN_LIMIT 0x46 58 #define MAX34440_IOUT_OC_FAULT_LIMIT 0x4A 59 60 #define MAX34451ETNA6_MFR_REV 0x0012 61 62 #define MAX34451_MFR_CHANNEL_CONFIG 0xe4 63 #define MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK 0x3f 64 65 struct max34440_data { 66 int id; 67 struct pmbus_driver_info info; 68 u8 iout_oc_warn_limit; 69 u8 iout_oc_fault_limit; 70 }; 71 72 #define to_max34440_data(x) container_of(x, struct max34440_data, info) 73 74 static int max34440_read_word_data(struct i2c_client *client, int page, 75 int phase, int reg) 76 { 77 int ret; 78 const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 79 const struct max34440_data *data = to_max34440_data(info); 80 81 switch (reg) { 82 case PMBUS_IOUT_OC_FAULT_LIMIT: 83 ret = pmbus_read_word_data(client, page, phase, 84 data->iout_oc_fault_limit); 85 break; 86 case PMBUS_IOUT_OC_WARN_LIMIT: 87 ret = pmbus_read_word_data(client, page, phase, 88 data->iout_oc_warn_limit); 89 break; 90 case PMBUS_VIRT_READ_VOUT_MIN: 91 ret = pmbus_read_word_data(client, page, phase, 92 MAX34440_MFR_VOUT_MIN); 93 break; 94 case PMBUS_VIRT_READ_VOUT_MAX: 95 ret = pmbus_read_word_data(client, page, phase, 96 MAX34440_MFR_VOUT_PEAK); 97 break; 98 case PMBUS_VIRT_READ_IOUT_AVG: 99 if (data->id != max34446 && data->id != max34451 && 100 data->id != adpm12160 && data->id != adpm12200) 101 return -ENXIO; 102 ret = pmbus_read_word_data(client, page, phase, 103 MAX34446_MFR_IOUT_AVG); 104 break; 105 case PMBUS_VIRT_READ_IOUT_MAX: 106 ret = pmbus_read_word_data(client, page, phase, 107 MAX34440_MFR_IOUT_PEAK); 108 break; 109 case PMBUS_VIRT_READ_POUT_AVG: 110 if (data->id != max34446) 111 return -ENXIO; 112 ret = pmbus_read_word_data(client, page, phase, 113 MAX34446_MFR_POUT_AVG); 114 break; 115 case PMBUS_VIRT_READ_POUT_MAX: 116 if (data->id != max34446) 117 return -ENXIO; 118 ret = pmbus_read_word_data(client, page, phase, 119 MAX34446_MFR_POUT_PEAK); 120 break; 121 case PMBUS_VIRT_READ_TEMP_AVG: 122 if (data->id != max34446 && data->id != max34460 && 123 data->id != max34461) 124 return -ENXIO; 125 ret = pmbus_read_word_data(client, page, phase, 126 MAX34446_MFR_TEMPERATURE_AVG); 127 break; 128 case PMBUS_VIRT_READ_TEMP_MAX: 129 ret = pmbus_read_word_data(client, page, phase, 130 MAX34440_MFR_TEMPERATURE_PEAK); 131 break; 132 case PMBUS_VIRT_RESET_POUT_HISTORY: 133 if (data->id != max34446) 134 return -ENXIO; 135 ret = 0; 136 break; 137 case PMBUS_VIRT_RESET_VOUT_HISTORY: 138 case PMBUS_VIRT_RESET_IOUT_HISTORY: 139 case PMBUS_VIRT_RESET_TEMP_HISTORY: 140 ret = 0; 141 break; 142 default: 143 ret = -ENODATA; 144 break; 145 } 146 return ret; 147 } 148 149 static int max34440_write_word_data(struct i2c_client *client, int page, 150 int reg, u16 word) 151 { 152 const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 153 const struct max34440_data *data = to_max34440_data(info); 154 int ret; 155 156 switch (reg) { 157 case PMBUS_IOUT_OC_FAULT_LIMIT: 158 ret = pmbus_write_word_data(client, page, data->iout_oc_fault_limit, 159 word); 160 break; 161 case PMBUS_IOUT_OC_WARN_LIMIT: 162 ret = pmbus_write_word_data(client, page, data->iout_oc_warn_limit, 163 word); 164 break; 165 case PMBUS_VIRT_RESET_POUT_HISTORY: 166 ret = pmbus_write_word_data(client, page, 167 MAX34446_MFR_POUT_PEAK, 0); 168 if (ret) 169 break; 170 ret = pmbus_write_word_data(client, page, 171 MAX34446_MFR_POUT_AVG, 0); 172 break; 173 case PMBUS_VIRT_RESET_VOUT_HISTORY: 174 ret = pmbus_write_word_data(client, page, 175 MAX34440_MFR_VOUT_MIN, 0x7fff); 176 if (ret) 177 break; 178 ret = pmbus_write_word_data(client, page, 179 MAX34440_MFR_VOUT_PEAK, 0); 180 break; 181 case PMBUS_VIRT_RESET_IOUT_HISTORY: 182 ret = pmbus_write_word_data(client, page, 183 MAX34440_MFR_IOUT_PEAK, 0); 184 if (!ret && (data->id == max34446 || data->id == max34451 || 185 data->id == adpm12160 || data->id == adpm12200)) 186 ret = pmbus_write_word_data(client, page, 187 MAX34446_MFR_IOUT_AVG, 0); 188 189 break; 190 case PMBUS_VIRT_RESET_TEMP_HISTORY: 191 ret = pmbus_write_word_data(client, page, 192 MAX34440_MFR_TEMPERATURE_PEAK, 193 0x8000); 194 if (!ret && data->id == max34446) 195 ret = pmbus_write_word_data(client, page, 196 MAX34446_MFR_TEMPERATURE_AVG, 0); 197 break; 198 default: 199 ret = -ENODATA; 200 break; 201 } 202 return ret; 203 } 204 205 static int max34440_read_byte_data(struct i2c_client *client, int page, int reg) 206 { 207 int ret = 0; 208 int mfg_status; 209 210 if (page >= 0) { 211 ret = pmbus_set_page(client, page, 0xff); 212 if (ret < 0) 213 return ret; 214 } 215 216 switch (reg) { 217 case PMBUS_STATUS_IOUT: 218 mfg_status = pmbus_read_word_data(client, 0, 0xff, 219 PMBUS_STATUS_MFR_SPECIFIC); 220 if (mfg_status < 0) 221 return mfg_status; 222 if (mfg_status & MAX34440_STATUS_OC_WARN) 223 ret |= PB_IOUT_OC_WARNING; 224 if (mfg_status & MAX34440_STATUS_OC_FAULT) 225 ret |= PB_IOUT_OC_FAULT; 226 break; 227 case PMBUS_STATUS_TEMPERATURE: 228 mfg_status = pmbus_read_word_data(client, 0, 0xff, 229 PMBUS_STATUS_MFR_SPECIFIC); 230 if (mfg_status < 0) 231 return mfg_status; 232 if (mfg_status & MAX34440_STATUS_OT_WARN) 233 ret |= PB_TEMP_OT_WARNING; 234 if (mfg_status & MAX34440_STATUS_OT_FAULT) 235 ret |= PB_TEMP_OT_FAULT; 236 break; 237 default: 238 ret = -ENODATA; 239 break; 240 } 241 return ret; 242 } 243 244 static int max34451_set_supported_funcs(struct i2c_client *client, 245 struct max34440_data *data) 246 { 247 /* 248 * Each of the channel 0-15 can be configured to monitor the following 249 * functions based on MFR_CHANNEL_CONFIG[5:0] 250 * 0x10: Sequencing + voltage monitoring (only valid for PAGES 0–11) 251 * 0x20: Voltage monitoring (no sequencing) 252 * 0x21: Voltage read only 253 * 0x22: Current monitoring 254 * 0x23: Current read only 255 * 0x30: General-purpose input active low 256 * 0x34: General-purpose input active high 257 * 0x00: Disabled 258 */ 259 260 int page, rv; 261 bool max34451_na6 = false; 262 263 rv = i2c_smbus_read_word_data(client, PMBUS_MFR_REVISION); 264 if (rv < 0) 265 return rv; 266 267 if (rv >= MAX34451ETNA6_MFR_REV) { 268 max34451_na6 = true; 269 data->info.format[PSC_VOLTAGE_IN] = direct; 270 data->info.format[PSC_CURRENT_IN] = direct; 271 data->info.m[PSC_VOLTAGE_IN] = 1; 272 data->info.b[PSC_VOLTAGE_IN] = 0; 273 data->info.R[PSC_VOLTAGE_IN] = 3; 274 data->info.m[PSC_CURRENT_IN] = 1; 275 data->info.b[PSC_CURRENT_IN] = 0; 276 data->info.R[PSC_CURRENT_IN] = 2; 277 data->iout_oc_fault_limit = PMBUS_IOUT_OC_FAULT_LIMIT; 278 data->iout_oc_warn_limit = PMBUS_IOUT_OC_WARN_LIMIT; 279 } 280 281 for (page = 0; page < 16; page++) { 282 rv = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page); 283 fsleep(MAX34440_PAGE_CHANGE_DELAY); 284 if (rv < 0) 285 return rv; 286 287 rv = i2c_smbus_read_word_data(client, 288 MAX34451_MFR_CHANNEL_CONFIG); 289 if (rv < 0) 290 return rv; 291 292 switch (rv & MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK) { 293 case 0x10: 294 case 0x20: 295 data->info.func[page] = PMBUS_HAVE_VOUT | 296 PMBUS_HAVE_STATUS_VOUT; 297 298 if (max34451_na6) 299 data->info.func[page] |= PMBUS_HAVE_VIN | 300 PMBUS_HAVE_STATUS_INPUT; 301 break; 302 case 0x21: 303 data->info.func[page] = PMBUS_HAVE_VOUT; 304 305 if (max34451_na6) 306 data->info.func[page] |= PMBUS_HAVE_VIN; 307 break; 308 case 0x22: 309 data->info.func[page] = PMBUS_HAVE_IOUT | 310 PMBUS_HAVE_STATUS_IOUT; 311 312 if (max34451_na6) 313 data->info.func[page] |= PMBUS_HAVE_IIN | 314 PMBUS_HAVE_STATUS_INPUT; 315 break; 316 case 0x23: 317 data->info.func[page] = PMBUS_HAVE_IOUT; 318 319 if (max34451_na6) 320 data->info.func[page] |= PMBUS_HAVE_IIN; 321 break; 322 default: 323 break; 324 } 325 } 326 327 return 0; 328 } 329 330 static struct pmbus_driver_info max34440_info[] = { 331 [adpm12160] = { 332 .pages = 19, 333 .format[PSC_VOLTAGE_IN] = direct, 334 .format[PSC_VOLTAGE_OUT] = direct, 335 .format[PSC_CURRENT_IN] = direct, 336 .format[PSC_CURRENT_OUT] = direct, 337 .format[PSC_TEMPERATURE] = direct, 338 .m[PSC_VOLTAGE_IN] = 125, 339 .b[PSC_VOLTAGE_IN] = 0, 340 .R[PSC_VOLTAGE_IN] = 0, 341 .m[PSC_VOLTAGE_OUT] = 125, 342 .b[PSC_VOLTAGE_OUT] = 0, 343 .R[PSC_VOLTAGE_OUT] = 0, 344 .m[PSC_CURRENT_IN] = 250, 345 .b[PSC_CURRENT_IN] = 0, 346 .R[PSC_CURRENT_IN] = -1, 347 .m[PSC_CURRENT_OUT] = 250, 348 .b[PSC_CURRENT_OUT] = 0, 349 .R[PSC_CURRENT_OUT] = -1, 350 .m[PSC_TEMPERATURE] = 1, 351 .b[PSC_TEMPERATURE] = 0, 352 .R[PSC_TEMPERATURE] = 2, 353 /* absent func below [18] are not for monitoring */ 354 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 355 .func[4] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 356 .func[5] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 357 .func[6] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 358 .func[7] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 359 .func[8] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 360 .func[9] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT, 361 .func[10] = PMBUS_HAVE_IIN | PMBUS_HAVE_STATUS_INPUT, 362 .func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 363 .read_word_data = max34440_read_word_data, 364 .write_word_data = max34440_write_word_data, 365 }, 366 [adpm12200] = { 367 .pages = 19, 368 .format[PSC_VOLTAGE_IN] = direct, 369 .format[PSC_VOLTAGE_OUT] = direct, 370 .format[PSC_CURRENT_IN] = direct, 371 .format[PSC_CURRENT_OUT] = direct, 372 .format[PSC_TEMPERATURE] = direct, 373 .m[PSC_VOLTAGE_IN] = 125, 374 .b[PSC_VOLTAGE_IN] = 0, 375 .R[PSC_VOLTAGE_IN] = 0, 376 .m[PSC_VOLTAGE_OUT] = 125, 377 .b[PSC_VOLTAGE_OUT] = 0, 378 .R[PSC_VOLTAGE_OUT] = 0, 379 .m[PSC_CURRENT_IN] = 250, 380 .b[PSC_CURRENT_IN] = 0, 381 .R[PSC_CURRENT_IN] = -1, 382 .m[PSC_CURRENT_OUT] = 250, 383 .b[PSC_CURRENT_OUT] = 0, 384 .R[PSC_CURRENT_OUT] = -1, 385 .m[PSC_TEMPERATURE] = 1, 386 .b[PSC_TEMPERATURE] = 0, 387 .R[PSC_TEMPERATURE] = 2, 388 /* absent func below [18] are not for monitoring */ 389 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 390 .func[4] = PMBUS_HAVE_STATUS_IOUT, 391 .func[5] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 392 .func[6] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 393 .func[7] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 394 .func[8] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 395 .func[9] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT, 396 .func[10] = PMBUS_HAVE_IIN | PMBUS_HAVE_STATUS_INPUT, 397 .func[14] = PMBUS_HAVE_IOUT, 398 .func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 399 .read_word_data = max34440_read_word_data, 400 .write_word_data = max34440_write_word_data, 401 }, 402 [max34440] = { 403 .pages = 14, 404 .format[PSC_VOLTAGE_IN] = direct, 405 .format[PSC_VOLTAGE_OUT] = direct, 406 .format[PSC_TEMPERATURE] = direct, 407 .format[PSC_CURRENT_OUT] = direct, 408 .m[PSC_VOLTAGE_IN] = 1, 409 .b[PSC_VOLTAGE_IN] = 0, 410 .R[PSC_VOLTAGE_IN] = 3, /* R = 0 in datasheet reflects mV */ 411 .m[PSC_VOLTAGE_OUT] = 1, 412 .b[PSC_VOLTAGE_OUT] = 0, 413 .R[PSC_VOLTAGE_OUT] = 3, /* R = 0 in datasheet reflects mV */ 414 .m[PSC_CURRENT_OUT] = 1, 415 .b[PSC_CURRENT_OUT] = 0, 416 .R[PSC_CURRENT_OUT] = 3, /* R = 0 in datasheet reflects mA */ 417 .m[PSC_TEMPERATURE] = 1, 418 .b[PSC_TEMPERATURE] = 0, 419 .R[PSC_TEMPERATURE] = 2, 420 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 421 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 422 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 423 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 424 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 425 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 426 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 427 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 428 .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 429 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 430 .func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 431 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 432 .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 433 .func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 434 .func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 435 .func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 436 .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 437 .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 438 .func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 439 .func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 440 .read_byte_data = max34440_read_byte_data, 441 .read_word_data = max34440_read_word_data, 442 .write_word_data = max34440_write_word_data, 443 .page_change_delay = MAX34440_PAGE_CHANGE_DELAY, 444 }, 445 [max34441] = { 446 .pages = 12, 447 .format[PSC_VOLTAGE_IN] = direct, 448 .format[PSC_VOLTAGE_OUT] = direct, 449 .format[PSC_TEMPERATURE] = direct, 450 .format[PSC_CURRENT_OUT] = direct, 451 .format[PSC_FAN] = direct, 452 .m[PSC_VOLTAGE_IN] = 1, 453 .b[PSC_VOLTAGE_IN] = 0, 454 .R[PSC_VOLTAGE_IN] = 3, 455 .m[PSC_VOLTAGE_OUT] = 1, 456 .b[PSC_VOLTAGE_OUT] = 0, 457 .R[PSC_VOLTAGE_OUT] = 3, 458 .m[PSC_CURRENT_OUT] = 1, 459 .b[PSC_CURRENT_OUT] = 0, 460 .R[PSC_CURRENT_OUT] = 3, 461 .m[PSC_TEMPERATURE] = 1, 462 .b[PSC_TEMPERATURE] = 0, 463 .R[PSC_TEMPERATURE] = 2, 464 .m[PSC_FAN] = 1, 465 .b[PSC_FAN] = 0, 466 .R[PSC_FAN] = 0, 467 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 468 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 469 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 470 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 471 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 472 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 473 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 474 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 475 .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 476 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 477 .func[5] = PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12, 478 .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 479 .func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 480 .func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 481 .func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 482 .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 483 .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 484 .read_byte_data = max34440_read_byte_data, 485 .read_word_data = max34440_read_word_data, 486 .write_word_data = max34440_write_word_data, 487 .page_change_delay = MAX34440_PAGE_CHANGE_DELAY, 488 }, 489 [max34446] = { 490 .pages = 7, 491 .format[PSC_VOLTAGE_IN] = direct, 492 .format[PSC_VOLTAGE_OUT] = direct, 493 .format[PSC_TEMPERATURE] = direct, 494 .format[PSC_CURRENT_OUT] = direct, 495 .format[PSC_POWER] = direct, 496 .m[PSC_VOLTAGE_IN] = 1, 497 .b[PSC_VOLTAGE_IN] = 0, 498 .R[PSC_VOLTAGE_IN] = 3, 499 .m[PSC_VOLTAGE_OUT] = 1, 500 .b[PSC_VOLTAGE_OUT] = 0, 501 .R[PSC_VOLTAGE_OUT] = 3, 502 .m[PSC_CURRENT_OUT] = 1, 503 .b[PSC_CURRENT_OUT] = 0, 504 .R[PSC_CURRENT_OUT] = 3, 505 .m[PSC_POWER] = 1, 506 .b[PSC_POWER] = 0, 507 .R[PSC_POWER] = 3, 508 .m[PSC_TEMPERATURE] = 1, 509 .b[PSC_TEMPERATURE] = 0, 510 .R[PSC_TEMPERATURE] = 2, 511 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 512 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT, 513 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 514 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 515 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 516 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT, 517 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 518 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 519 .func[4] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 520 .func[5] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 521 .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 522 .read_byte_data = max34440_read_byte_data, 523 .read_word_data = max34440_read_word_data, 524 .write_word_data = max34440_write_word_data, 525 .page_change_delay = MAX34440_PAGE_CHANGE_DELAY, 526 }, 527 [max34451] = { 528 .pages = 21, 529 .format[PSC_VOLTAGE_OUT] = direct, 530 .format[PSC_TEMPERATURE] = direct, 531 .format[PSC_CURRENT_OUT] = direct, 532 .m[PSC_VOLTAGE_OUT] = 1, 533 .b[PSC_VOLTAGE_OUT] = 0, 534 .R[PSC_VOLTAGE_OUT] = 3, 535 .m[PSC_CURRENT_OUT] = 1, 536 .b[PSC_CURRENT_OUT] = 0, 537 .R[PSC_CURRENT_OUT] = 2, 538 .m[PSC_TEMPERATURE] = 1, 539 .b[PSC_TEMPERATURE] = 0, 540 .R[PSC_TEMPERATURE] = 2, 541 /* func 0-15 is set dynamically before probing */ 542 .func[16] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 543 .func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 544 .func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 545 .func[19] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 546 .func[20] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 547 .read_word_data = max34440_read_word_data, 548 .write_word_data = max34440_write_word_data, 549 .page_change_delay = MAX34440_PAGE_CHANGE_DELAY, 550 }, 551 [max34460] = { 552 .pages = 18, 553 .format[PSC_VOLTAGE_OUT] = direct, 554 .format[PSC_TEMPERATURE] = direct, 555 .m[PSC_VOLTAGE_OUT] = 1, 556 .b[PSC_VOLTAGE_OUT] = 0, 557 .R[PSC_VOLTAGE_OUT] = 3, 558 .m[PSC_TEMPERATURE] = 1, 559 .b[PSC_TEMPERATURE] = 0, 560 .R[PSC_TEMPERATURE] = 2, 561 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 562 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 563 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 564 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 565 .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 566 .func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 567 .func[6] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 568 .func[7] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 569 .func[8] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 570 .func[9] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 571 .func[10] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 572 .func[11] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 573 .func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 574 .func[14] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 575 .func[15] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 576 .func[16] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 577 .func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 578 .read_word_data = max34440_read_word_data, 579 .write_word_data = max34440_write_word_data, 580 .page_change_delay = MAX34440_PAGE_CHANGE_DELAY, 581 }, 582 [max34461] = { 583 .pages = 23, 584 .format[PSC_VOLTAGE_OUT] = direct, 585 .format[PSC_TEMPERATURE] = direct, 586 .m[PSC_VOLTAGE_OUT] = 1, 587 .b[PSC_VOLTAGE_OUT] = 0, 588 .R[PSC_VOLTAGE_OUT] = 3, 589 .m[PSC_TEMPERATURE] = 1, 590 .b[PSC_TEMPERATURE] = 0, 591 .R[PSC_TEMPERATURE] = 2, 592 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 593 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 594 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 595 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 596 .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 597 .func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 598 .func[6] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 599 .func[7] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 600 .func[8] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 601 .func[9] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 602 .func[10] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 603 .func[11] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 604 .func[12] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 605 .func[13] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 606 .func[14] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 607 .func[15] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 608 /* page 16 is reserved */ 609 .func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 610 .func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 611 .func[19] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 612 .func[20] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 613 .func[21] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 614 .read_word_data = max34440_read_word_data, 615 .write_word_data = max34440_write_word_data, 616 .page_change_delay = MAX34440_PAGE_CHANGE_DELAY, 617 }, 618 }; 619 620 static int max34440_probe(struct i2c_client *client) 621 { 622 struct max34440_data *data; 623 int rv; 624 625 data = devm_kzalloc(&client->dev, sizeof(struct max34440_data), 626 GFP_KERNEL); 627 if (!data) 628 return -ENOMEM; 629 data->id = (uintptr_t)i2c_get_match_data(client); 630 data->info = max34440_info[data->id]; 631 data->iout_oc_fault_limit = MAX34440_IOUT_OC_FAULT_LIMIT; 632 data->iout_oc_warn_limit = MAX34440_IOUT_OC_WARN_LIMIT; 633 634 if (data->id == max34451) { 635 rv = max34451_set_supported_funcs(client, data); 636 if (rv) 637 return rv; 638 } else if (data->id == adpm12160 || data->id == adpm12200) { 639 data->iout_oc_fault_limit = PMBUS_IOUT_OC_FAULT_LIMIT; 640 data->iout_oc_warn_limit = PMBUS_IOUT_OC_WARN_LIMIT; 641 } 642 643 return pmbus_do_probe(client, &data->info); 644 } 645 646 static const struct i2c_device_id max34440_id[] = { 647 {"adpm12160", adpm12160}, 648 {"adpm12200", adpm12200}, 649 {"max34440", max34440}, 650 {"max34441", max34441}, 651 {"max34446", max34446}, 652 {"max34451", max34451}, 653 {"max34460", max34460}, 654 {"max34461", max34461}, 655 {} 656 }; 657 MODULE_DEVICE_TABLE(i2c, max34440_id); 658 659 /* This is the driver that will be inserted */ 660 static struct i2c_driver max34440_driver = { 661 .driver = { 662 .name = "max34440", 663 }, 664 .probe = max34440_probe, 665 .id_table = max34440_id, 666 }; 667 668 module_i2c_driver(max34440_driver); 669 670 MODULE_AUTHOR("Guenter Roeck"); 671 MODULE_DESCRIPTION("PMBus driver for Maxim MAX34440/MAX34441"); 672 MODULE_LICENSE("GPL"); 673 MODULE_IMPORT_NS("PMBUS"); 674