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 "pmbus.h" 16 17 enum chips { max34440, max34441, max34446, max34451, max34460, max34461 }; 18 19 #define MAX34440_MFR_VOUT_PEAK 0xd4 20 #define MAX34440_MFR_IOUT_PEAK 0xd5 21 #define MAX34440_MFR_TEMPERATURE_PEAK 0xd6 22 #define MAX34440_MFR_VOUT_MIN 0xd7 23 24 #define MAX34446_MFR_POUT_PEAK 0xe0 25 #define MAX34446_MFR_POUT_AVG 0xe1 26 #define MAX34446_MFR_IOUT_AVG 0xe2 27 #define MAX34446_MFR_TEMPERATURE_AVG 0xe3 28 29 #define MAX34440_STATUS_OC_WARN BIT(0) 30 #define MAX34440_STATUS_OC_FAULT BIT(1) 31 #define MAX34440_STATUS_OT_FAULT BIT(5) 32 #define MAX34440_STATUS_OT_WARN BIT(6) 33 34 /* 35 * The whole max344* family have IOUT_OC_WARN_LIMIT and IOUT_OC_FAULT_LIMIT 36 * swapped from the standard pmbus spec addresses. 37 */ 38 #define MAX34440_IOUT_OC_WARN_LIMIT 0x46 39 #define MAX34440_IOUT_OC_FAULT_LIMIT 0x4A 40 41 #define MAX34451_MFR_CHANNEL_CONFIG 0xe4 42 #define MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK 0x3f 43 44 struct max34440_data { 45 int id; 46 struct pmbus_driver_info info; 47 }; 48 49 #define to_max34440_data(x) container_of(x, struct max34440_data, info) 50 51 static const struct i2c_device_id max34440_id[]; 52 53 static int max34440_read_word_data(struct i2c_client *client, int page, 54 int phase, int reg) 55 { 56 int ret; 57 const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 58 const struct max34440_data *data = to_max34440_data(info); 59 60 switch (reg) { 61 case PMBUS_IOUT_OC_FAULT_LIMIT: 62 ret = pmbus_read_word_data(client, page, phase, 63 MAX34440_IOUT_OC_FAULT_LIMIT); 64 break; 65 case PMBUS_IOUT_OC_WARN_LIMIT: 66 ret = pmbus_read_word_data(client, page, phase, 67 MAX34440_IOUT_OC_WARN_LIMIT); 68 break; 69 case PMBUS_VIRT_READ_VOUT_MIN: 70 ret = pmbus_read_word_data(client, page, phase, 71 MAX34440_MFR_VOUT_MIN); 72 break; 73 case PMBUS_VIRT_READ_VOUT_MAX: 74 ret = pmbus_read_word_data(client, page, phase, 75 MAX34440_MFR_VOUT_PEAK); 76 break; 77 case PMBUS_VIRT_READ_IOUT_AVG: 78 if (data->id != max34446 && data->id != max34451) 79 return -ENXIO; 80 ret = pmbus_read_word_data(client, page, phase, 81 MAX34446_MFR_IOUT_AVG); 82 break; 83 case PMBUS_VIRT_READ_IOUT_MAX: 84 ret = pmbus_read_word_data(client, page, phase, 85 MAX34440_MFR_IOUT_PEAK); 86 break; 87 case PMBUS_VIRT_READ_POUT_AVG: 88 if (data->id != max34446) 89 return -ENXIO; 90 ret = pmbus_read_word_data(client, page, phase, 91 MAX34446_MFR_POUT_AVG); 92 break; 93 case PMBUS_VIRT_READ_POUT_MAX: 94 if (data->id != max34446) 95 return -ENXIO; 96 ret = pmbus_read_word_data(client, page, phase, 97 MAX34446_MFR_POUT_PEAK); 98 break; 99 case PMBUS_VIRT_READ_TEMP_AVG: 100 if (data->id != max34446 && data->id != max34460 && 101 data->id != max34461) 102 return -ENXIO; 103 ret = pmbus_read_word_data(client, page, phase, 104 MAX34446_MFR_TEMPERATURE_AVG); 105 break; 106 case PMBUS_VIRT_READ_TEMP_MAX: 107 ret = pmbus_read_word_data(client, page, phase, 108 MAX34440_MFR_TEMPERATURE_PEAK); 109 break; 110 case PMBUS_VIRT_RESET_POUT_HISTORY: 111 if (data->id != max34446) 112 return -ENXIO; 113 ret = 0; 114 break; 115 case PMBUS_VIRT_RESET_VOUT_HISTORY: 116 case PMBUS_VIRT_RESET_IOUT_HISTORY: 117 case PMBUS_VIRT_RESET_TEMP_HISTORY: 118 ret = 0; 119 break; 120 default: 121 ret = -ENODATA; 122 break; 123 } 124 return ret; 125 } 126 127 static int max34440_write_word_data(struct i2c_client *client, int page, 128 int reg, u16 word) 129 { 130 const struct pmbus_driver_info *info = pmbus_get_driver_info(client); 131 const struct max34440_data *data = to_max34440_data(info); 132 int ret; 133 134 switch (reg) { 135 case PMBUS_IOUT_OC_FAULT_LIMIT: 136 ret = pmbus_write_word_data(client, page, MAX34440_IOUT_OC_FAULT_LIMIT, 137 word); 138 break; 139 case PMBUS_IOUT_OC_WARN_LIMIT: 140 ret = pmbus_write_word_data(client, page, MAX34440_IOUT_OC_WARN_LIMIT, 141 word); 142 break; 143 case PMBUS_VIRT_RESET_POUT_HISTORY: 144 ret = pmbus_write_word_data(client, page, 145 MAX34446_MFR_POUT_PEAK, 0); 146 if (ret) 147 break; 148 ret = pmbus_write_word_data(client, page, 149 MAX34446_MFR_POUT_AVG, 0); 150 break; 151 case PMBUS_VIRT_RESET_VOUT_HISTORY: 152 ret = pmbus_write_word_data(client, page, 153 MAX34440_MFR_VOUT_MIN, 0x7fff); 154 if (ret) 155 break; 156 ret = pmbus_write_word_data(client, page, 157 MAX34440_MFR_VOUT_PEAK, 0); 158 break; 159 case PMBUS_VIRT_RESET_IOUT_HISTORY: 160 ret = pmbus_write_word_data(client, page, 161 MAX34440_MFR_IOUT_PEAK, 0); 162 if (!ret && (data->id == max34446 || data->id == max34451)) 163 ret = pmbus_write_word_data(client, page, 164 MAX34446_MFR_IOUT_AVG, 0); 165 166 break; 167 case PMBUS_VIRT_RESET_TEMP_HISTORY: 168 ret = pmbus_write_word_data(client, page, 169 MAX34440_MFR_TEMPERATURE_PEAK, 170 0x8000); 171 if (!ret && data->id == max34446) 172 ret = pmbus_write_word_data(client, page, 173 MAX34446_MFR_TEMPERATURE_AVG, 0); 174 break; 175 default: 176 ret = -ENODATA; 177 break; 178 } 179 return ret; 180 } 181 182 static int max34440_read_byte_data(struct i2c_client *client, int page, int reg) 183 { 184 int ret = 0; 185 int mfg_status; 186 187 if (page >= 0) { 188 ret = pmbus_set_page(client, page, 0xff); 189 if (ret < 0) 190 return ret; 191 } 192 193 switch (reg) { 194 case PMBUS_STATUS_IOUT: 195 mfg_status = pmbus_read_word_data(client, 0, 0xff, 196 PMBUS_STATUS_MFR_SPECIFIC); 197 if (mfg_status < 0) 198 return mfg_status; 199 if (mfg_status & MAX34440_STATUS_OC_WARN) 200 ret |= PB_IOUT_OC_WARNING; 201 if (mfg_status & MAX34440_STATUS_OC_FAULT) 202 ret |= PB_IOUT_OC_FAULT; 203 break; 204 case PMBUS_STATUS_TEMPERATURE: 205 mfg_status = pmbus_read_word_data(client, 0, 0xff, 206 PMBUS_STATUS_MFR_SPECIFIC); 207 if (mfg_status < 0) 208 return mfg_status; 209 if (mfg_status & MAX34440_STATUS_OT_WARN) 210 ret |= PB_TEMP_OT_WARNING; 211 if (mfg_status & MAX34440_STATUS_OT_FAULT) 212 ret |= PB_TEMP_OT_FAULT; 213 break; 214 default: 215 ret = -ENODATA; 216 break; 217 } 218 return ret; 219 } 220 221 static int max34451_set_supported_funcs(struct i2c_client *client, 222 struct max34440_data *data) 223 { 224 /* 225 * Each of the channel 0-15 can be configured to monitor the following 226 * functions based on MFR_CHANNEL_CONFIG[5:0] 227 * 0x10: Sequencing + voltage monitoring (only valid for PAGES 0–11) 228 * 0x20: Voltage monitoring (no sequencing) 229 * 0x21: Voltage read only 230 * 0x22: Current monitoring 231 * 0x23: Current read only 232 * 0x30: General-purpose input active low 233 * 0x34: General-purpose input active high 234 * 0x00: Disabled 235 */ 236 237 int page, rv; 238 239 for (page = 0; page < 16; page++) { 240 rv = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page); 241 if (rv < 0) 242 return rv; 243 244 rv = i2c_smbus_read_word_data(client, 245 MAX34451_MFR_CHANNEL_CONFIG); 246 if (rv < 0) 247 return rv; 248 249 switch (rv & MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK) { 250 case 0x10: 251 case 0x20: 252 data->info.func[page] = PMBUS_HAVE_VOUT | 253 PMBUS_HAVE_STATUS_VOUT; 254 break; 255 case 0x21: 256 data->info.func[page] = PMBUS_HAVE_VOUT; 257 break; 258 case 0x22: 259 data->info.func[page] = PMBUS_HAVE_IOUT | 260 PMBUS_HAVE_STATUS_IOUT; 261 break; 262 case 0x23: 263 data->info.func[page] = PMBUS_HAVE_IOUT; 264 break; 265 default: 266 break; 267 } 268 } 269 270 return 0; 271 } 272 273 static struct pmbus_driver_info max34440_info[] = { 274 [max34440] = { 275 .pages = 14, 276 .format[PSC_VOLTAGE_IN] = direct, 277 .format[PSC_VOLTAGE_OUT] = direct, 278 .format[PSC_TEMPERATURE] = direct, 279 .format[PSC_CURRENT_OUT] = direct, 280 .m[PSC_VOLTAGE_IN] = 1, 281 .b[PSC_VOLTAGE_IN] = 0, 282 .R[PSC_VOLTAGE_IN] = 3, /* R = 0 in datasheet reflects mV */ 283 .m[PSC_VOLTAGE_OUT] = 1, 284 .b[PSC_VOLTAGE_OUT] = 0, 285 .R[PSC_VOLTAGE_OUT] = 3, /* R = 0 in datasheet reflects mV */ 286 .m[PSC_CURRENT_OUT] = 1, 287 .b[PSC_CURRENT_OUT] = 0, 288 .R[PSC_CURRENT_OUT] = 3, /* R = 0 in datasheet reflects mA */ 289 .m[PSC_TEMPERATURE] = 1, 290 .b[PSC_TEMPERATURE] = 0, 291 .R[PSC_TEMPERATURE] = 2, 292 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 293 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 294 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 295 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 296 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 297 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 298 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 299 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 300 .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 301 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 302 .func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 303 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 304 .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 305 .func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 306 .func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 307 .func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 308 .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 309 .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 310 .func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 311 .func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 312 .read_byte_data = max34440_read_byte_data, 313 .read_word_data = max34440_read_word_data, 314 .write_word_data = max34440_write_word_data, 315 }, 316 [max34441] = { 317 .pages = 12, 318 .format[PSC_VOLTAGE_IN] = direct, 319 .format[PSC_VOLTAGE_OUT] = direct, 320 .format[PSC_TEMPERATURE] = direct, 321 .format[PSC_CURRENT_OUT] = direct, 322 .format[PSC_FAN] = direct, 323 .m[PSC_VOLTAGE_IN] = 1, 324 .b[PSC_VOLTAGE_IN] = 0, 325 .R[PSC_VOLTAGE_IN] = 3, 326 .m[PSC_VOLTAGE_OUT] = 1, 327 .b[PSC_VOLTAGE_OUT] = 0, 328 .R[PSC_VOLTAGE_OUT] = 3, 329 .m[PSC_CURRENT_OUT] = 1, 330 .b[PSC_CURRENT_OUT] = 0, 331 .R[PSC_CURRENT_OUT] = 3, 332 .m[PSC_TEMPERATURE] = 1, 333 .b[PSC_TEMPERATURE] = 0, 334 .R[PSC_TEMPERATURE] = 2, 335 .m[PSC_FAN] = 1, 336 .b[PSC_FAN] = 0, 337 .R[PSC_FAN] = 0, 338 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 339 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 340 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 341 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 342 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 343 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 344 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 345 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 346 .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 347 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 348 .func[5] = PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12, 349 .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 350 .func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 351 .func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 352 .func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 353 .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 354 .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 355 .read_byte_data = max34440_read_byte_data, 356 .read_word_data = max34440_read_word_data, 357 .write_word_data = max34440_write_word_data, 358 }, 359 [max34446] = { 360 .pages = 7, 361 .format[PSC_VOLTAGE_IN] = direct, 362 .format[PSC_VOLTAGE_OUT] = direct, 363 .format[PSC_TEMPERATURE] = direct, 364 .format[PSC_CURRENT_OUT] = direct, 365 .format[PSC_POWER] = direct, 366 .m[PSC_VOLTAGE_IN] = 1, 367 .b[PSC_VOLTAGE_IN] = 0, 368 .R[PSC_VOLTAGE_IN] = 3, 369 .m[PSC_VOLTAGE_OUT] = 1, 370 .b[PSC_VOLTAGE_OUT] = 0, 371 .R[PSC_VOLTAGE_OUT] = 3, 372 .m[PSC_CURRENT_OUT] = 1, 373 .b[PSC_CURRENT_OUT] = 0, 374 .R[PSC_CURRENT_OUT] = 3, 375 .m[PSC_POWER] = 1, 376 .b[PSC_POWER] = 0, 377 .R[PSC_POWER] = 3, 378 .m[PSC_TEMPERATURE] = 1, 379 .b[PSC_TEMPERATURE] = 0, 380 .R[PSC_TEMPERATURE] = 2, 381 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 382 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT, 383 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 384 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 385 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 386 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT, 387 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 388 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT, 389 .func[4] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 390 .func[5] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 391 .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 392 .read_byte_data = max34440_read_byte_data, 393 .read_word_data = max34440_read_word_data, 394 .write_word_data = max34440_write_word_data, 395 }, 396 [max34451] = { 397 .pages = 21, 398 .format[PSC_VOLTAGE_OUT] = direct, 399 .format[PSC_TEMPERATURE] = direct, 400 .format[PSC_CURRENT_OUT] = direct, 401 .m[PSC_VOLTAGE_OUT] = 1, 402 .b[PSC_VOLTAGE_OUT] = 0, 403 .R[PSC_VOLTAGE_OUT] = 3, 404 .m[PSC_CURRENT_OUT] = 1, 405 .b[PSC_CURRENT_OUT] = 0, 406 .R[PSC_CURRENT_OUT] = 2, 407 .m[PSC_TEMPERATURE] = 1, 408 .b[PSC_TEMPERATURE] = 0, 409 .R[PSC_TEMPERATURE] = 2, 410 /* func 0-15 is set dynamically before probing */ 411 .func[16] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 412 .func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 413 .func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 414 .func[19] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 415 .func[20] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 416 .read_word_data = max34440_read_word_data, 417 .write_word_data = max34440_write_word_data, 418 }, 419 [max34460] = { 420 .pages = 18, 421 .format[PSC_VOLTAGE_OUT] = direct, 422 .format[PSC_TEMPERATURE] = direct, 423 .m[PSC_VOLTAGE_OUT] = 1, 424 .b[PSC_VOLTAGE_OUT] = 0, 425 .R[PSC_VOLTAGE_OUT] = 3, 426 .m[PSC_TEMPERATURE] = 1, 427 .b[PSC_TEMPERATURE] = 0, 428 .R[PSC_TEMPERATURE] = 2, 429 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 430 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 431 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 432 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 433 .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 434 .func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 435 .func[6] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 436 .func[7] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 437 .func[8] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 438 .func[9] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 439 .func[10] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 440 .func[11] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 441 .func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 442 .func[14] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 443 .func[15] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 444 .func[16] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 445 .func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 446 .read_word_data = max34440_read_word_data, 447 .write_word_data = max34440_write_word_data, 448 }, 449 [max34461] = { 450 .pages = 23, 451 .format[PSC_VOLTAGE_OUT] = direct, 452 .format[PSC_TEMPERATURE] = direct, 453 .m[PSC_VOLTAGE_OUT] = 1, 454 .b[PSC_VOLTAGE_OUT] = 0, 455 .R[PSC_VOLTAGE_OUT] = 3, 456 .m[PSC_TEMPERATURE] = 1, 457 .b[PSC_TEMPERATURE] = 0, 458 .R[PSC_TEMPERATURE] = 2, 459 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 460 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 461 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 462 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 463 .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 464 .func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 465 .func[6] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 466 .func[7] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 467 .func[8] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 468 .func[9] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 469 .func[10] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 470 .func[11] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 471 .func[12] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 472 .func[13] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 473 .func[14] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 474 .func[15] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, 475 /* page 16 is reserved */ 476 .func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 477 .func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 478 .func[19] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 479 .func[20] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 480 .func[21] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, 481 .read_word_data = max34440_read_word_data, 482 .write_word_data = max34440_write_word_data, 483 }, 484 }; 485 486 static int max34440_probe(struct i2c_client *client) 487 { 488 struct max34440_data *data; 489 int rv; 490 491 data = devm_kzalloc(&client->dev, sizeof(struct max34440_data), 492 GFP_KERNEL); 493 if (!data) 494 return -ENOMEM; 495 data->id = i2c_match_id(max34440_id, client)->driver_data; 496 data->info = max34440_info[data->id]; 497 498 if (data->id == max34451) { 499 rv = max34451_set_supported_funcs(client, data); 500 if (rv) 501 return rv; 502 } 503 504 return pmbus_do_probe(client, &data->info); 505 } 506 507 static const struct i2c_device_id max34440_id[] = { 508 {"max34440", max34440}, 509 {"max34441", max34441}, 510 {"max34446", max34446}, 511 {"max34451", max34451}, 512 {"max34460", max34460}, 513 {"max34461", max34461}, 514 {} 515 }; 516 MODULE_DEVICE_TABLE(i2c, max34440_id); 517 518 /* This is the driver that will be inserted */ 519 static struct i2c_driver max34440_driver = { 520 .driver = { 521 .name = "max34440", 522 }, 523 .probe_new = max34440_probe, 524 .id_table = max34440_id, 525 }; 526 527 module_i2c_driver(max34440_driver); 528 529 MODULE_AUTHOR("Guenter Roeck"); 530 MODULE_DESCRIPTION("PMBus driver for Maxim MAX34440/MAX34441"); 531 MODULE_LICENSE("GPL"); 532