tjh.dev / kernel
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kernel / drivers / hwmon / adt7462.c
at v3.13-rc2 1974 lines 60 kB view raw
1/* 2 * A hwmon driver for the Analog Devices ADT7462 3 * Copyright (C) 2008 IBM 4 * 5 * Author: Darrick J. Wong <darrick.wong@oracle.com> 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 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 22#include <linux/module.h> 23#include <linux/jiffies.h> 24#include <linux/i2c.h> 25#include <linux/hwmon.h> 26#include <linux/hwmon-sysfs.h> 27#include <linux/err.h> 28#include <linux/mutex.h> 29#include <linux/log2.h> 30#include <linux/slab.h> 31 32/* Addresses to scan */ 33static const unsigned short normal_i2c[] = { 0x58, 0x5C, I2C_CLIENT_END }; 34 35/* ADT7462 registers */ 36#define ADT7462_REG_DEVICE 0x3D 37#define ADT7462_REG_VENDOR 0x3E 38#define ADT7462_REG_REVISION 0x3F 39 40#define ADT7462_REG_MIN_TEMP_BASE_ADDR 0x44 41#define ADT7462_REG_MIN_TEMP_MAX_ADDR 0x47 42#define ADT7462_REG_MAX_TEMP_BASE_ADDR 0x48 43#define ADT7462_REG_MAX_TEMP_MAX_ADDR 0x4B 44#define ADT7462_REG_TEMP_BASE_ADDR 0x88 45#define ADT7462_REG_TEMP_MAX_ADDR 0x8F 46 47#define ADT7462_REG_FAN_BASE_ADDR 0x98 48#define ADT7462_REG_FAN_MAX_ADDR 0x9F 49#define ADT7462_REG_FAN2_BASE_ADDR 0xA2 50#define ADT7462_REG_FAN2_MAX_ADDR 0xA9 51#define ADT7462_REG_FAN_ENABLE 0x07 52#define ADT7462_REG_FAN_MIN_BASE_ADDR 0x78 53#define ADT7462_REG_FAN_MIN_MAX_ADDR 0x7F 54 55#define ADT7462_REG_CFG2 0x02 56#define ADT7462_FSPD_MASK 0x20 57 58#define ADT7462_REG_PWM_BASE_ADDR 0xAA 59#define ADT7462_REG_PWM_MAX_ADDR 0xAD 60#define ADT7462_REG_PWM_MIN_BASE_ADDR 0x28 61#define ADT7462_REG_PWM_MIN_MAX_ADDR 0x2B 62#define ADT7462_REG_PWM_MAX 0x2C 63#define ADT7462_REG_PWM_TEMP_MIN_BASE_ADDR 0x5C 64#define ADT7462_REG_PWM_TEMP_MIN_MAX_ADDR 0x5F 65#define ADT7462_REG_PWM_TEMP_RANGE_BASE_ADDR 0x60 66#define ADT7462_REG_PWM_TEMP_RANGE_MAX_ADDR 0x63 67#define ADT7462_PWM_HYST_MASK 0x0F 68#define ADT7462_PWM_RANGE_MASK 0xF0 69#define ADT7462_PWM_RANGE_SHIFT 4 70#define ADT7462_REG_PWM_CFG_BASE_ADDR 0x21 71#define ADT7462_REG_PWM_CFG_MAX_ADDR 0x24 72#define ADT7462_PWM_CHANNEL_MASK 0xE0 73#define ADT7462_PWM_CHANNEL_SHIFT 5 74 75#define ADT7462_REG_PIN_CFG_BASE_ADDR 0x10 76#define ADT7462_REG_PIN_CFG_MAX_ADDR 0x13 77#define ADT7462_PIN7_INPUT 0x01 /* cfg0 */ 78#define ADT7462_DIODE3_INPUT 0x20 79#define ADT7462_DIODE1_INPUT 0x40 80#define ADT7462_VID_INPUT 0x80 81#define ADT7462_PIN22_INPUT 0x04 /* cfg1 */ 82#define ADT7462_PIN21_INPUT 0x08 83#define ADT7462_PIN19_INPUT 0x10 84#define ADT7462_PIN15_INPUT 0x20 85#define ADT7462_PIN13_INPUT 0x40 86#define ADT7462_PIN8_INPUT 0x80 87#define ADT7462_PIN23_MASK 0x03 88#define ADT7462_PIN23_SHIFT 0 89#define ADT7462_PIN26_MASK 0x0C /* cfg2 */ 90#define ADT7462_PIN26_SHIFT 2 91#define ADT7462_PIN25_MASK 0x30 92#define ADT7462_PIN25_SHIFT 4 93#define ADT7462_PIN24_MASK 0xC0 94#define ADT7462_PIN24_SHIFT 6 95#define ADT7462_PIN26_VOLT_INPUT 0x08 96#define ADT7462_PIN25_VOLT_INPUT 0x20 97#define ADT7462_PIN28_SHIFT 4 /* cfg3 */ 98#define ADT7462_PIN28_VOLT 0x5 99 100#define ADT7462_REG_ALARM1 0xB8 101#define ADT7462_LT_ALARM 0x02 102#define ADT7462_R1T_ALARM 0x04 103#define ADT7462_R2T_ALARM 0x08 104#define ADT7462_R3T_ALARM 0x10 105#define ADT7462_REG_ALARM2 0xBB 106#define ADT7462_V0_ALARM 0x01 107#define ADT7462_V1_ALARM 0x02 108#define ADT7462_V2_ALARM 0x04 109#define ADT7462_V3_ALARM 0x08 110#define ADT7462_V4_ALARM 0x10 111#define ADT7462_V5_ALARM 0x20 112#define ADT7462_V6_ALARM 0x40 113#define ADT7462_V7_ALARM 0x80 114#define ADT7462_REG_ALARM3 0xBC 115#define ADT7462_V8_ALARM 0x08 116#define ADT7462_V9_ALARM 0x10 117#define ADT7462_V10_ALARM 0x20 118#define ADT7462_V11_ALARM 0x40 119#define ADT7462_V12_ALARM 0x80 120#define ADT7462_REG_ALARM4 0xBD 121#define ADT7462_F0_ALARM 0x01 122#define ADT7462_F1_ALARM 0x02 123#define ADT7462_F2_ALARM 0x04 124#define ADT7462_F3_ALARM 0x08 125#define ADT7462_F4_ALARM 0x10 126#define ADT7462_F5_ALARM 0x20 127#define ADT7462_F6_ALARM 0x40 128#define ADT7462_F7_ALARM 0x80 129#define ADT7462_ALARM1 0x0000 130#define ADT7462_ALARM2 0x0100 131#define ADT7462_ALARM3 0x0200 132#define ADT7462_ALARM4 0x0300 133#define ADT7462_ALARM_REG_SHIFT 8 134#define ADT7462_ALARM_FLAG_MASK 0x0F 135 136#define ADT7462_TEMP_COUNT 4 137#define ADT7462_TEMP_REG(x) (ADT7462_REG_TEMP_BASE_ADDR + ((x) * 2)) 138#define ADT7462_TEMP_MIN_REG(x) (ADT7462_REG_MIN_TEMP_BASE_ADDR + (x)) 139#define ADT7462_TEMP_MAX_REG(x) (ADT7462_REG_MAX_TEMP_BASE_ADDR + (x)) 140#define TEMP_FRAC_OFFSET 6 141 142#define ADT7462_FAN_COUNT 8 143#define ADT7462_REG_FAN_MIN(x) (ADT7462_REG_FAN_MIN_BASE_ADDR + (x)) 144 145#define ADT7462_PWM_COUNT 4 146#define ADT7462_REG_PWM(x) (ADT7462_REG_PWM_BASE_ADDR + (x)) 147#define ADT7462_REG_PWM_MIN(x) (ADT7462_REG_PWM_MIN_BASE_ADDR + (x)) 148#define ADT7462_REG_PWM_TMIN(x) \ 149 (ADT7462_REG_PWM_TEMP_MIN_BASE_ADDR + (x)) 150#define ADT7462_REG_PWM_TRANGE(x) \ 151 (ADT7462_REG_PWM_TEMP_RANGE_BASE_ADDR + (x)) 152 153#define ADT7462_PIN_CFG_REG_COUNT 4 154#define ADT7462_REG_PIN_CFG(x) (ADT7462_REG_PIN_CFG_BASE_ADDR + (x)) 155#define ADT7462_REG_PWM_CFG(x) (ADT7462_REG_PWM_CFG_BASE_ADDR + (x)) 156 157#define ADT7462_ALARM_REG_COUNT 4 158 159/* 160 * The chip can measure 13 different voltage sources: 161 * 162 * 1. +12V1 (pin 7) 163 * 2. Vccp1/+2.5V/+1.8V/+1.5V (pin 23) 164 * 3. +12V3 (pin 22) 165 * 4. +5V (pin 21) 166 * 5. +1.25V/+0.9V (pin 19) 167 * 6. +2.5V/+1.8V (pin 15) 168 * 7. +3.3v (pin 13) 169 * 8. +12V2 (pin 8) 170 * 9. Vbatt/FSB_Vtt (pin 26) 171 * A. +3.3V/+1.2V1 (pin 25) 172 * B. Vccp2/+2.5V/+1.8V/+1.5V (pin 24) 173 * C. +1.5V ICH (only if BOTH pin 28/29 are set to +1.5V) 174 * D. +1.5V 3GPIO (only if BOTH pin 28/29 are set to +1.5V) 175 * 176 * Each of these 13 has a factor to convert raw to voltage. Even better, 177 * the pins can be connected to other sensors (tach/gpio/hot/etc), which 178 * makes the bookkeeping tricky. 179 * 180 * Some, but not all, of these voltages have low/high limits. 181 */ 182#define ADT7462_VOLT_COUNT 13 183 184#define ADT7462_VENDOR 0x41 185#define ADT7462_DEVICE 0x62 186/* datasheet only mentions a revision 4 */ 187#define ADT7462_REVISION 0x04 188 189/* How often do we reread sensors values? (In jiffies) */ 190#define SENSOR_REFRESH_INTERVAL (2 * HZ) 191 192/* How often do we reread sensor limit values? (In jiffies) */ 193#define LIMIT_REFRESH_INTERVAL (60 * HZ) 194 195/* datasheet says to divide this number by the fan reading to get fan rpm */ 196#define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x)) 197#define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM 198#define FAN_PERIOD_INVALID 65535 199#define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID) 200 201#define MASK_AND_SHIFT(value, prefix) \ 202 (((value) & prefix##_MASK) >> prefix##_SHIFT) 203 204struct adt7462_data { 205 struct device *hwmon_dev; 206 struct attribute_group attrs; 207 struct mutex lock; 208 char sensors_valid; 209 char limits_valid; 210 unsigned long sensors_last_updated; /* In jiffies */ 211 unsigned long limits_last_updated; /* In jiffies */ 212 213 u8 temp[ADT7462_TEMP_COUNT]; 214 /* bits 6-7 are quarter pieces of temp */ 215 u8 temp_frac[ADT7462_TEMP_COUNT]; 216 u8 temp_min[ADT7462_TEMP_COUNT]; 217 u8 temp_max[ADT7462_TEMP_COUNT]; 218 u16 fan[ADT7462_FAN_COUNT]; 219 u8 fan_enabled; 220 u8 fan_min[ADT7462_FAN_COUNT]; 221 u8 cfg2; 222 u8 pwm[ADT7462_PWM_COUNT]; 223 u8 pin_cfg[ADT7462_PIN_CFG_REG_COUNT]; 224 u8 voltages[ADT7462_VOLT_COUNT]; 225 u8 volt_max[ADT7462_VOLT_COUNT]; 226 u8 volt_min[ADT7462_VOLT_COUNT]; 227 u8 pwm_min[ADT7462_PWM_COUNT]; 228 u8 pwm_tmin[ADT7462_PWM_COUNT]; 229 u8 pwm_trange[ADT7462_PWM_COUNT]; 230 u8 pwm_max; /* only one per chip */ 231 u8 pwm_cfg[ADT7462_PWM_COUNT]; 232 u8 alarms[ADT7462_ALARM_REG_COUNT]; 233}; 234 235static int adt7462_probe(struct i2c_client *client, 236 const struct i2c_device_id *id); 237static int adt7462_detect(struct i2c_client *client, 238 struct i2c_board_info *info); 239static int adt7462_remove(struct i2c_client *client); 240 241static const struct i2c_device_id adt7462_id[] = { 242 { "adt7462", 0 }, 243 { } 244}; 245MODULE_DEVICE_TABLE(i2c, adt7462_id); 246 247static struct i2c_driver adt7462_driver = { 248 .class = I2C_CLASS_HWMON, 249 .driver = { 250 .name = "adt7462", 251 }, 252 .probe = adt7462_probe, 253 .remove = adt7462_remove, 254 .id_table = adt7462_id, 255 .detect = adt7462_detect, 256 .address_list = normal_i2c, 257}; 258 259/* 260 * 16-bit registers on the ADT7462 are low-byte first. The data sheet says 261 * that the low byte must be read before the high byte. 262 */ 263static inline int adt7462_read_word_data(struct i2c_client *client, u8 reg) 264{ 265 u16 foo; 266 foo = i2c_smbus_read_byte_data(client, reg); 267 foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8); 268 return foo; 269} 270 271/* For some reason these registers are not contiguous. */ 272static int ADT7462_REG_FAN(int fan) 273{ 274 if (fan < 4) 275 return ADT7462_REG_FAN_BASE_ADDR + (2 * fan); 276 return ADT7462_REG_FAN2_BASE_ADDR + (2 * (fan - 4)); 277} 278 279/* Voltage registers are scattered everywhere */ 280static int ADT7462_REG_VOLT_MAX(struct adt7462_data *data, int which) 281{ 282 switch (which) { 283 case 0: 284 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT)) 285 return 0x7C; 286 break; 287 case 1: 288 return 0x69; 289 case 2: 290 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT)) 291 return 0x7F; 292 break; 293 case 3: 294 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT)) 295 return 0x7E; 296 break; 297 case 4: 298 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT)) 299 return 0x4B; 300 break; 301 case 5: 302 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT)) 303 return 0x49; 304 break; 305 case 6: 306 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT)) 307 return 0x68; 308 break; 309 case 7: 310 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT)) 311 return 0x7D; 312 break; 313 case 8: 314 if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT)) 315 return 0x6C; 316 break; 317 case 9: 318 if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT)) 319 return 0x6B; 320 break; 321 case 10: 322 return 0x6A; 323 case 11: 324 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT == 325 ADT7462_PIN28_VOLT && 326 !(data->pin_cfg[0] & ADT7462_VID_INPUT)) 327 return 0x50; 328 break; 329 case 12: 330 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT == 331 ADT7462_PIN28_VOLT && 332 !(data->pin_cfg[0] & ADT7462_VID_INPUT)) 333 return 0x4C; 334 break; 335 } 336 return 0; 337} 338 339static int ADT7462_REG_VOLT_MIN(struct adt7462_data *data, int which) 340{ 341 switch (which) { 342 case 0: 343 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT)) 344 return 0x6D; 345 break; 346 case 1: 347 return 0x72; 348 case 2: 349 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT)) 350 return 0x6F; 351 break; 352 case 3: 353 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT)) 354 return 0x71; 355 break; 356 case 4: 357 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT)) 358 return 0x47; 359 break; 360 case 5: 361 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT)) 362 return 0x45; 363 break; 364 case 6: 365 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT)) 366 return 0x70; 367 break; 368 case 7: 369 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT)) 370 return 0x6E; 371 break; 372 case 8: 373 if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT)) 374 return 0x75; 375 break; 376 case 9: 377 if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT)) 378 return 0x74; 379 break; 380 case 10: 381 return 0x73; 382 case 11: 383 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT == 384 ADT7462_PIN28_VOLT && 385 !(data->pin_cfg[0] & ADT7462_VID_INPUT)) 386 return 0x76; 387 break; 388 case 12: 389 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT == 390 ADT7462_PIN28_VOLT && 391 !(data->pin_cfg[0] & ADT7462_VID_INPUT)) 392 return 0x77; 393 break; 394 } 395 return 0; 396} 397 398static int ADT7462_REG_VOLT(struct adt7462_data *data, int which) 399{ 400 switch (which) { 401 case 0: 402 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT)) 403 return 0xA3; 404 break; 405 case 1: 406 return 0x90; 407 case 2: 408 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT)) 409 return 0xA9; 410 break; 411 case 3: 412 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT)) 413 return 0xA7; 414 break; 415 case 4: 416 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT)) 417 return 0x8F; 418 break; 419 case 5: 420 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT)) 421 return 0x8B; 422 break; 423 case 6: 424 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT)) 425 return 0x96; 426 break; 427 case 7: 428 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT)) 429 return 0xA5; 430 break; 431 case 8: 432 if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT)) 433 return 0x93; 434 break; 435 case 9: 436 if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT)) 437 return 0x92; 438 break; 439 case 10: 440 return 0x91; 441 case 11: 442 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT == 443 ADT7462_PIN28_VOLT && 444 !(data->pin_cfg[0] & ADT7462_VID_INPUT)) 445 return 0x94; 446 break; 447 case 12: 448 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT == 449 ADT7462_PIN28_VOLT && 450 !(data->pin_cfg[0] & ADT7462_VID_INPUT)) 451 return 0x95; 452 break; 453 } 454 return -ENODEV; 455} 456 457/* Provide labels for sysfs */ 458static const char *voltage_label(struct adt7462_data *data, int which) 459{ 460 switch (which) { 461 case 0: 462 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT)) 463 return "+12V1"; 464 break; 465 case 1: 466 switch (MASK_AND_SHIFT(data->pin_cfg[1], ADT7462_PIN23)) { 467 case 0: 468 return "Vccp1"; 469 case 1: 470 return "+2.5V"; 471 case 2: 472 return "+1.8V"; 473 case 3: 474 return "+1.5V"; 475 } 476 case 2: 477 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT)) 478 return "+12V3"; 479 break; 480 case 3: 481 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT)) 482 return "+5V"; 483 break; 484 case 4: 485 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT)) { 486 if (data->pin_cfg[1] & ADT7462_PIN19_INPUT) 487 return "+0.9V"; 488 return "+1.25V"; 489 } 490 break; 491 case 5: 492 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT)) { 493 if (data->pin_cfg[1] & ADT7462_PIN19_INPUT) 494 return "+1.8V"; 495 return "+2.5V"; 496 } 497 break; 498 case 6: 499 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT)) 500 return "+3.3V"; 501 break; 502 case 7: 503 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT)) 504 return "+12V2"; 505 break; 506 case 8: 507 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN26)) { 508 case 0: 509 return "Vbatt"; 510 case 1: 511 return "FSB_Vtt"; 512 } 513 break; 514 case 9: 515 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN25)) { 516 case 0: 517 return "+3.3V"; 518 case 1: 519 return "+1.2V1"; 520 } 521 break; 522 case 10: 523 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN24)) { 524 case 0: 525 return "Vccp2"; 526 case 1: 527 return "+2.5V"; 528 case 2: 529 return "+1.8V"; 530 case 3: 531 return "+1.5"; 532 } 533 case 11: 534 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT == 535 ADT7462_PIN28_VOLT && 536 !(data->pin_cfg[0] & ADT7462_VID_INPUT)) 537 return "+1.5V ICH"; 538 break; 539 case 12: 540 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT == 541 ADT7462_PIN28_VOLT && 542 !(data->pin_cfg[0] & ADT7462_VID_INPUT)) 543 return "+1.5V 3GPIO"; 544 break; 545 } 546 return "N/A"; 547} 548 549/* Multipliers are actually in uV, not mV. */ 550static int voltage_multiplier(struct adt7462_data *data, int which) 551{ 552 switch (which) { 553 case 0: 554 if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT)) 555 return 62500; 556 break; 557 case 1: 558 switch (MASK_AND_SHIFT(data->pin_cfg[1], ADT7462_PIN23)) { 559 case 0: 560 if (data->pin_cfg[0] & ADT7462_VID_INPUT) 561 return 12500; 562 return 6250; 563 case 1: 564 return 13000; 565 case 2: 566 return 9400; 567 case 3: 568 return 7800; 569 } 570 case 2: 571 if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT)) 572 return 62500; 573 break; 574 case 3: 575 if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT)) 576 return 26000; 577 break; 578 case 4: 579 if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT)) { 580 if (data->pin_cfg[1] & ADT7462_PIN19_INPUT) 581 return 4690; 582 return 6500; 583 } 584 break; 585 case 5: 586 if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT)) { 587 if (data->pin_cfg[1] & ADT7462_PIN15_INPUT) 588 return 9400; 589 return 13000; 590 } 591 break; 592 case 6: 593 if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT)) 594 return 17200; 595 break; 596 case 7: 597 if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT)) 598 return 62500; 599 break; 600 case 8: 601 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN26)) { 602 case 0: 603 return 15600; 604 case 1: 605 return 6250; 606 } 607 break; 608 case 9: 609 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN25)) { 610 case 0: 611 return 17200; 612 case 1: 613 return 6250; 614 } 615 break; 616 case 10: 617 switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN24)) { 618 case 0: 619 return 6250; 620 case 1: 621 return 13000; 622 case 2: 623 return 9400; 624 case 3: 625 return 7800; 626 } 627 case 11: 628 case 12: 629 if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT == 630 ADT7462_PIN28_VOLT && 631 !(data->pin_cfg[0] & ADT7462_VID_INPUT)) 632 return 7800; 633 } 634 return 0; 635} 636 637static int temp_enabled(struct adt7462_data *data, int which) 638{ 639 switch (which) { 640 case 0: 641 case 2: 642 return 1; 643 case 1: 644 if (data->pin_cfg[0] & ADT7462_DIODE1_INPUT) 645 return 1; 646 break; 647 case 3: 648 if (data->pin_cfg[0] & ADT7462_DIODE3_INPUT) 649 return 1; 650 break; 651 } 652 return 0; 653} 654 655static const char *temp_label(struct adt7462_data *data, int which) 656{ 657 switch (which) { 658 case 0: 659 return "local"; 660 case 1: 661 if (data->pin_cfg[0] & ADT7462_DIODE1_INPUT) 662 return "remote1"; 663 break; 664 case 2: 665 return "remote2"; 666 case 3: 667 if (data->pin_cfg[0] & ADT7462_DIODE3_INPUT) 668 return "remote3"; 669 break; 670 } 671 return "N/A"; 672} 673 674/* Map Trange register values to mC */ 675#define NUM_TRANGE_VALUES 16 676static const int trange_values[NUM_TRANGE_VALUES] = { 677 2000, 678 2500, 679 3300, 680 4000, 681 5000, 682 6700, 683 8000, 684 10000, 685 13300, 686 16000, 687 20000, 688 26700, 689 32000, 690 40000, 691 53300, 692 80000 693}; 694 695static int find_trange_value(int trange) 696{ 697 int i; 698 699 for (i = 0; i < NUM_TRANGE_VALUES; i++) 700 if (trange_values[i] == trange) 701 return i; 702 703 return -EINVAL; 704} 705 706static struct adt7462_data *adt7462_update_device(struct device *dev) 707{ 708 struct i2c_client *client = to_i2c_client(dev); 709 struct adt7462_data *data = i2c_get_clientdata(client); 710 unsigned long local_jiffies = jiffies; 711 int i; 712 713 mutex_lock(&data->lock); 714 if (time_before(local_jiffies, data->sensors_last_updated + 715 SENSOR_REFRESH_INTERVAL) 716 && data->sensors_valid) 717 goto no_sensor_update; 718 719 for (i = 0; i < ADT7462_TEMP_COUNT; i++) { 720 /* 721 * Reading the fractional register locks the integral 722 * register until both have been read. 723 */ 724 data->temp_frac[i] = i2c_smbus_read_byte_data(client, 725 ADT7462_TEMP_REG(i)); 726 data->temp[i] = i2c_smbus_read_byte_data(client, 727 ADT7462_TEMP_REG(i) + 1); 728 } 729 730 for (i = 0; i < ADT7462_FAN_COUNT; i++) 731 data->fan[i] = adt7462_read_word_data(client, 732 ADT7462_REG_FAN(i)); 733 734 data->fan_enabled = i2c_smbus_read_byte_data(client, 735 ADT7462_REG_FAN_ENABLE); 736 737 for (i = 0; i < ADT7462_PWM_COUNT; i++) 738 data->pwm[i] = i2c_smbus_read_byte_data(client, 739 ADT7462_REG_PWM(i)); 740 741 for (i = 0; i < ADT7462_PIN_CFG_REG_COUNT; i++) 742 data->pin_cfg[i] = i2c_smbus_read_byte_data(client, 743 ADT7462_REG_PIN_CFG(i)); 744 745 for (i = 0; i < ADT7462_VOLT_COUNT; i++) { 746 int reg = ADT7462_REG_VOLT(data, i); 747 if (!reg) 748 data->voltages[i] = 0; 749 else 750 data->voltages[i] = i2c_smbus_read_byte_data(client, 751 reg); 752 } 753 754 data->alarms[0] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM1); 755 data->alarms[1] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM2); 756 data->alarms[2] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM3); 757 data->alarms[3] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM4); 758 759 data->sensors_last_updated = local_jiffies; 760 data->sensors_valid = 1; 761 762no_sensor_update: 763 if (time_before(local_jiffies, data->limits_last_updated + 764 LIMIT_REFRESH_INTERVAL) 765 && data->limits_valid) 766 goto out; 767 768 for (i = 0; i < ADT7462_TEMP_COUNT; i++) { 769 data->temp_min[i] = i2c_smbus_read_byte_data(client, 770 ADT7462_TEMP_MIN_REG(i)); 771 data->temp_max[i] = i2c_smbus_read_byte_data(client, 772 ADT7462_TEMP_MAX_REG(i)); 773 } 774 775 for (i = 0; i < ADT7462_FAN_COUNT; i++) 776 data->fan_min[i] = i2c_smbus_read_byte_data(client, 777 ADT7462_REG_FAN_MIN(i)); 778 779 for (i = 0; i < ADT7462_VOLT_COUNT; i++) { 780 int reg = ADT7462_REG_VOLT_MAX(data, i); 781 data->volt_max[i] = 782 (reg ? i2c_smbus_read_byte_data(client, reg) : 0); 783 784 reg = ADT7462_REG_VOLT_MIN(data, i); 785 data->volt_min[i] = 786 (reg ? i2c_smbus_read_byte_data(client, reg) : 0); 787 } 788 789 for (i = 0; i < ADT7462_PWM_COUNT; i++) { 790 data->pwm_min[i] = i2c_smbus_read_byte_data(client, 791 ADT7462_REG_PWM_MIN(i)); 792 data->pwm_tmin[i] = i2c_smbus_read_byte_data(client, 793 ADT7462_REG_PWM_TMIN(i)); 794 data->pwm_trange[i] = i2c_smbus_read_byte_data(client, 795 ADT7462_REG_PWM_TRANGE(i)); 796 data->pwm_cfg[i] = i2c_smbus_read_byte_data(client, 797 ADT7462_REG_PWM_CFG(i)); 798 } 799 800 data->pwm_max = i2c_smbus_read_byte_data(client, ADT7462_REG_PWM_MAX); 801 802 data->cfg2 = i2c_smbus_read_byte_data(client, ADT7462_REG_CFG2); 803 804 data->limits_last_updated = local_jiffies; 805 data->limits_valid = 1; 806 807out: 808 mutex_unlock(&data->lock); 809 return data; 810} 811 812static ssize_t show_temp_min(struct device *dev, 813 struct device_attribute *devattr, 814 char *buf) 815{ 816 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 817 struct adt7462_data *data = adt7462_update_device(dev); 818 819 if (!temp_enabled(data, attr->index)) 820 return sprintf(buf, "0\n"); 821 822 return sprintf(buf, "%d\n", 1000 * (data->temp_min[attr->index] - 64)); 823} 824 825static ssize_t set_temp_min(struct device *dev, 826 struct device_attribute *devattr, 827 const char *buf, 828 size_t count) 829{ 830 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 831 struct i2c_client *client = to_i2c_client(dev); 832 struct adt7462_data *data = i2c_get_clientdata(client); 833 long temp; 834 835 if (kstrtol(buf, 10, &temp) || !temp_enabled(data, attr->index)) 836 return -EINVAL; 837 838 temp = DIV_ROUND_CLOSEST(temp, 1000) + 64; 839 temp = clamp_val(temp, 0, 255); 840 841 mutex_lock(&data->lock); 842 data->temp_min[attr->index] = temp; 843 i2c_smbus_write_byte_data(client, ADT7462_TEMP_MIN_REG(attr->index), 844 temp); 845 mutex_unlock(&data->lock); 846 847 return count; 848} 849 850static ssize_t show_temp_max(struct device *dev, 851 struct device_attribute *devattr, 852 char *buf) 853{ 854 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 855 struct adt7462_data *data = adt7462_update_device(dev); 856 857 if (!temp_enabled(data, attr->index)) 858 return sprintf(buf, "0\n"); 859 860 return sprintf(buf, "%d\n", 1000 * (data->temp_max[attr->index] - 64)); 861} 862 863static ssize_t set_temp_max(struct device *dev, 864 struct device_attribute *devattr, 865 const char *buf, 866 size_t count) 867{ 868 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 869 struct i2c_client *client = to_i2c_client(dev); 870 struct adt7462_data *data = i2c_get_clientdata(client); 871 long temp; 872 873 if (kstrtol(buf, 10, &temp) || !temp_enabled(data, attr->index)) 874 return -EINVAL; 875 876 temp = DIV_ROUND_CLOSEST(temp, 1000) + 64; 877 temp = clamp_val(temp, 0, 255); 878 879 mutex_lock(&data->lock); 880 data->temp_max[attr->index] = temp; 881 i2c_smbus_write_byte_data(client, ADT7462_TEMP_MAX_REG(attr->index), 882 temp); 883 mutex_unlock(&data->lock); 884 885 return count; 886} 887 888static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, 889 char *buf) 890{ 891 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 892 struct adt7462_data *data = adt7462_update_device(dev); 893 u8 frac = data->temp_frac[attr->index] >> TEMP_FRAC_OFFSET; 894 895 if (!temp_enabled(data, attr->index)) 896 return sprintf(buf, "0\n"); 897 898 return sprintf(buf, "%d\n", 1000 * (data->temp[attr->index] - 64) + 899 250 * frac); 900} 901 902static ssize_t show_temp_label(struct device *dev, 903 struct device_attribute *devattr, 904 char *buf) 905{ 906 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 907 struct adt7462_data *data = adt7462_update_device(dev); 908 909 return sprintf(buf, "%s\n", temp_label(data, attr->index)); 910} 911 912static ssize_t show_volt_max(struct device *dev, 913 struct device_attribute *devattr, 914 char *buf) 915{ 916 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 917 struct adt7462_data *data = adt7462_update_device(dev); 918 int x = voltage_multiplier(data, attr->index); 919 920 x *= data->volt_max[attr->index]; 921 x /= 1000; /* convert from uV to mV */ 922 923 return sprintf(buf, "%d\n", x); 924} 925 926static ssize_t set_volt_max(struct device *dev, 927 struct device_attribute *devattr, 928 const char *buf, 929 size_t count) 930{ 931 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 932 struct i2c_client *client = to_i2c_client(dev); 933 struct adt7462_data *data = i2c_get_clientdata(client); 934 int x = voltage_multiplier(data, attr->index); 935 long temp; 936 937 if (kstrtol(buf, 10, &temp) || !x) 938 return -EINVAL; 939 940 temp *= 1000; /* convert mV to uV */ 941 temp = DIV_ROUND_CLOSEST(temp, x); 942 temp = clamp_val(temp, 0, 255); 943 944 mutex_lock(&data->lock); 945 data->volt_max[attr->index] = temp; 946 i2c_smbus_write_byte_data(client, 947 ADT7462_REG_VOLT_MAX(data, attr->index), 948 temp); 949 mutex_unlock(&data->lock); 950 951 return count; 952} 953 954static ssize_t show_volt_min(struct device *dev, 955 struct device_attribute *devattr, 956 char *buf) 957{ 958 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 959 struct adt7462_data *data = adt7462_update_device(dev); 960 int x = voltage_multiplier(data, attr->index); 961 962 x *= data->volt_min[attr->index]; 963 x /= 1000; /* convert from uV to mV */ 964 965 return sprintf(buf, "%d\n", x); 966} 967 968static ssize_t set_volt_min(struct device *dev, 969 struct device_attribute *devattr, 970 const char *buf, 971 size_t count) 972{ 973 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 974 struct i2c_client *client = to_i2c_client(dev); 975 struct adt7462_data *data = i2c_get_clientdata(client); 976 int x = voltage_multiplier(data, attr->index); 977 long temp; 978 979 if (kstrtol(buf, 10, &temp) || !x) 980 return -EINVAL; 981 982 temp *= 1000; /* convert mV to uV */ 983 temp = DIV_ROUND_CLOSEST(temp, x); 984 temp = clamp_val(temp, 0, 255); 985 986 mutex_lock(&data->lock); 987 data->volt_min[attr->index] = temp; 988 i2c_smbus_write_byte_data(client, 989 ADT7462_REG_VOLT_MIN(data, attr->index), 990 temp); 991 mutex_unlock(&data->lock); 992 993 return count; 994} 995 996static ssize_t show_voltage(struct device *dev, 997 struct device_attribute *devattr, 998 char *buf) 999{ 1000 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1001 struct adt7462_data *data = adt7462_update_device(dev); 1002 int x = voltage_multiplier(data, attr->index); 1003 1004 x *= data->voltages[attr->index]; 1005 x /= 1000; /* convert from uV to mV */ 1006 1007 return sprintf(buf, "%d\n", x); 1008} 1009 1010static ssize_t show_voltage_label(struct device *dev, 1011 struct device_attribute *devattr, 1012 char *buf) 1013{ 1014 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1015 struct adt7462_data *data = adt7462_update_device(dev); 1016 1017 return sprintf(buf, "%s\n", voltage_label(data, attr->index)); 1018} 1019 1020static ssize_t show_alarm(struct device *dev, 1021 struct device_attribute *devattr, 1022 char *buf) 1023{ 1024 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1025 struct adt7462_data *data = adt7462_update_device(dev); 1026 int reg = attr->index >> ADT7462_ALARM_REG_SHIFT; 1027 int mask = attr->index & ADT7462_ALARM_FLAG_MASK; 1028 1029 if (data->alarms[reg] & mask) 1030 return sprintf(buf, "1\n"); 1031 else 1032 return sprintf(buf, "0\n"); 1033} 1034 1035static int fan_enabled(struct adt7462_data *data, int fan) 1036{ 1037 return data->fan_enabled & (1 << fan); 1038} 1039 1040static ssize_t show_fan_min(struct device *dev, 1041 struct device_attribute *devattr, 1042 char *buf) 1043{ 1044 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1045 struct adt7462_data *data = adt7462_update_device(dev); 1046 u16 temp; 1047 1048 /* Only the MSB of the min fan period is stored... */ 1049 temp = data->fan_min[attr->index]; 1050 temp <<= 8; 1051 1052 if (!fan_enabled(data, attr->index) || 1053 !FAN_DATA_VALID(temp)) 1054 return sprintf(buf, "0\n"); 1055 1056 return sprintf(buf, "%d\n", FAN_PERIOD_TO_RPM(temp)); 1057} 1058 1059static ssize_t set_fan_min(struct device *dev, 1060 struct device_attribute *devattr, 1061 const char *buf, size_t count) 1062{ 1063 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1064 struct i2c_client *client = to_i2c_client(dev); 1065 struct adt7462_data *data = i2c_get_clientdata(client); 1066 long temp; 1067 1068 if (kstrtol(buf, 10, &temp) || !temp || 1069 !fan_enabled(data, attr->index)) 1070 return -EINVAL; 1071 1072 temp = FAN_RPM_TO_PERIOD(temp); 1073 temp >>= 8; 1074 temp = clamp_val(temp, 1, 255); 1075 1076 mutex_lock(&data->lock); 1077 data->fan_min[attr->index] = temp; 1078 i2c_smbus_write_byte_data(client, ADT7462_REG_FAN_MIN(attr->index), 1079 temp); 1080 mutex_unlock(&data->lock); 1081 1082 return count; 1083} 1084 1085static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, 1086 char *buf) 1087{ 1088 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1089 struct adt7462_data *data = adt7462_update_device(dev); 1090 1091 if (!fan_enabled(data, attr->index) || 1092 !FAN_DATA_VALID(data->fan[attr->index])) 1093 return sprintf(buf, "0\n"); 1094 1095 return sprintf(buf, "%d\n", 1096 FAN_PERIOD_TO_RPM(data->fan[attr->index])); 1097} 1098 1099static ssize_t show_force_pwm_max(struct device *dev, 1100 struct device_attribute *devattr, 1101 char *buf) 1102{ 1103 struct adt7462_data *data = adt7462_update_device(dev); 1104 return sprintf(buf, "%d\n", (data->cfg2 & ADT7462_FSPD_MASK ? 1 : 0)); 1105} 1106 1107static ssize_t set_force_pwm_max(struct device *dev, 1108 struct device_attribute *devattr, 1109 const char *buf, 1110 size_t count) 1111{ 1112 struct i2c_client *client = to_i2c_client(dev); 1113 struct adt7462_data *data = i2c_get_clientdata(client); 1114 long temp; 1115 u8 reg; 1116 1117 if (kstrtol(buf, 10, &temp)) 1118 return -EINVAL; 1119 1120 mutex_lock(&data->lock); 1121 reg = i2c_smbus_read_byte_data(client, ADT7462_REG_CFG2); 1122 if (temp) 1123 reg |= ADT7462_FSPD_MASK; 1124 else 1125 reg &= ~ADT7462_FSPD_MASK; 1126 data->cfg2 = reg; 1127 i2c_smbus_write_byte_data(client, ADT7462_REG_CFG2, reg); 1128 mutex_unlock(&data->lock); 1129 1130 return count; 1131} 1132 1133static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr, 1134 char *buf) 1135{ 1136 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1137 struct adt7462_data *data = adt7462_update_device(dev); 1138 return sprintf(buf, "%d\n", data->pwm[attr->index]); 1139} 1140 1141static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, 1142 const char *buf, size_t count) 1143{ 1144 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1145 struct i2c_client *client = to_i2c_client(dev); 1146 struct adt7462_data *data = i2c_get_clientdata(client); 1147 long temp; 1148 1149 if (kstrtol(buf, 10, &temp)) 1150 return -EINVAL; 1151 1152 temp = clamp_val(temp, 0, 255); 1153 1154 mutex_lock(&data->lock); 1155 data->pwm[attr->index] = temp; 1156 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM(attr->index), temp); 1157 mutex_unlock(&data->lock); 1158 1159 return count; 1160} 1161 1162static ssize_t show_pwm_max(struct device *dev, 1163 struct device_attribute *devattr, 1164 char *buf) 1165{ 1166 struct adt7462_data *data = adt7462_update_device(dev); 1167 return sprintf(buf, "%d\n", data->pwm_max); 1168} 1169 1170static ssize_t set_pwm_max(struct device *dev, 1171 struct device_attribute *devattr, 1172 const char *buf, 1173 size_t count) 1174{ 1175 struct i2c_client *client = to_i2c_client(dev); 1176 struct adt7462_data *data = i2c_get_clientdata(client); 1177 long temp; 1178 1179 if (kstrtol(buf, 10, &temp)) 1180 return -EINVAL; 1181 1182 temp = clamp_val(temp, 0, 255); 1183 1184 mutex_lock(&data->lock); 1185 data->pwm_max = temp; 1186 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_MAX, temp); 1187 mutex_unlock(&data->lock); 1188 1189 return count; 1190} 1191 1192static ssize_t show_pwm_min(struct device *dev, 1193 struct device_attribute *devattr, 1194 char *buf) 1195{ 1196 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1197 struct adt7462_data *data = adt7462_update_device(dev); 1198 return sprintf(buf, "%d\n", data->pwm_min[attr->index]); 1199} 1200 1201static ssize_t set_pwm_min(struct device *dev, 1202 struct device_attribute *devattr, 1203 const char *buf, 1204 size_t count) 1205{ 1206 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1207 struct i2c_client *client = to_i2c_client(dev); 1208 struct adt7462_data *data = i2c_get_clientdata(client); 1209 long temp; 1210 1211 if (kstrtol(buf, 10, &temp)) 1212 return -EINVAL; 1213 1214 temp = clamp_val(temp, 0, 255); 1215 1216 mutex_lock(&data->lock); 1217 data->pwm_min[attr->index] = temp; 1218 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_MIN(attr->index), 1219 temp); 1220 mutex_unlock(&data->lock); 1221 1222 return count; 1223} 1224 1225static ssize_t show_pwm_hyst(struct device *dev, 1226 struct device_attribute *devattr, 1227 char *buf) 1228{ 1229 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1230 struct adt7462_data *data = adt7462_update_device(dev); 1231 return sprintf(buf, "%d\n", 1000 * 1232 (data->pwm_trange[attr->index] & ADT7462_PWM_HYST_MASK)); 1233} 1234 1235static ssize_t set_pwm_hyst(struct device *dev, 1236 struct device_attribute *devattr, 1237 const char *buf, 1238 size_t count) 1239{ 1240 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1241 struct i2c_client *client = to_i2c_client(dev); 1242 struct adt7462_data *data = i2c_get_clientdata(client); 1243 long temp; 1244 1245 if (kstrtol(buf, 10, &temp)) 1246 return -EINVAL; 1247 1248 temp = DIV_ROUND_CLOSEST(temp, 1000); 1249 temp = clamp_val(temp, 0, 15); 1250 1251 /* package things up */ 1252 temp &= ADT7462_PWM_HYST_MASK; 1253 temp |= data->pwm_trange[attr->index] & ADT7462_PWM_RANGE_MASK; 1254 1255 mutex_lock(&data->lock); 1256 data->pwm_trange[attr->index] = temp; 1257 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TRANGE(attr->index), 1258 temp); 1259 mutex_unlock(&data->lock); 1260 1261 return count; 1262} 1263 1264static ssize_t show_pwm_tmax(struct device *dev, 1265 struct device_attribute *devattr, 1266 char *buf) 1267{ 1268 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1269 struct adt7462_data *data = adt7462_update_device(dev); 1270 1271 /* tmax = tmin + trange */ 1272 int trange = trange_values[data->pwm_trange[attr->index] >> 1273 ADT7462_PWM_RANGE_SHIFT]; 1274 int tmin = (data->pwm_tmin[attr->index] - 64) * 1000; 1275 1276 return sprintf(buf, "%d\n", tmin + trange); 1277} 1278 1279static ssize_t set_pwm_tmax(struct device *dev, 1280 struct device_attribute *devattr, 1281 const char *buf, 1282 size_t count) 1283{ 1284 int temp; 1285 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1286 struct i2c_client *client = to_i2c_client(dev); 1287 struct adt7462_data *data = i2c_get_clientdata(client); 1288 int tmin, trange_value; 1289 long trange; 1290 1291 if (kstrtol(buf, 10, &trange)) 1292 return -EINVAL; 1293 1294 /* trange = tmax - tmin */ 1295 tmin = (data->pwm_tmin[attr->index] - 64) * 1000; 1296 trange_value = find_trange_value(trange - tmin); 1297 if (trange_value < 0) 1298 return trange_value; 1299 1300 temp = trange_value << ADT7462_PWM_RANGE_SHIFT; 1301 temp |= data->pwm_trange[attr->index] & ADT7462_PWM_HYST_MASK; 1302 1303 mutex_lock(&data->lock); 1304 data->pwm_trange[attr->index] = temp; 1305 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TRANGE(attr->index), 1306 temp); 1307 mutex_unlock(&data->lock); 1308 1309 return count; 1310} 1311 1312static ssize_t show_pwm_tmin(struct device *dev, 1313 struct device_attribute *devattr, 1314 char *buf) 1315{ 1316 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1317 struct adt7462_data *data = adt7462_update_device(dev); 1318 return sprintf(buf, "%d\n", 1000 * (data->pwm_tmin[attr->index] - 64)); 1319} 1320 1321static ssize_t set_pwm_tmin(struct device *dev, 1322 struct device_attribute *devattr, 1323 const char *buf, 1324 size_t count) 1325{ 1326 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1327 struct i2c_client *client = to_i2c_client(dev); 1328 struct adt7462_data *data = i2c_get_clientdata(client); 1329 long temp; 1330 1331 if (kstrtol(buf, 10, &temp)) 1332 return -EINVAL; 1333 1334 temp = DIV_ROUND_CLOSEST(temp, 1000) + 64; 1335 temp = clamp_val(temp, 0, 255); 1336 1337 mutex_lock(&data->lock); 1338 data->pwm_tmin[attr->index] = temp; 1339 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TMIN(attr->index), 1340 temp); 1341 mutex_unlock(&data->lock); 1342 1343 return count; 1344} 1345 1346static ssize_t show_pwm_auto(struct device *dev, 1347 struct device_attribute *devattr, 1348 char *buf) 1349{ 1350 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1351 struct adt7462_data *data = adt7462_update_device(dev); 1352 int cfg = data->pwm_cfg[attr->index] >> ADT7462_PWM_CHANNEL_SHIFT; 1353 1354 switch (cfg) { 1355 case 4: /* off */ 1356 return sprintf(buf, "0\n"); 1357 case 7: /* manual */ 1358 return sprintf(buf, "1\n"); 1359 default: /* automatic */ 1360 return sprintf(buf, "2\n"); 1361 } 1362} 1363 1364static void set_pwm_channel(struct i2c_client *client, 1365 struct adt7462_data *data, 1366 int which, 1367 int value) 1368{ 1369 int temp = data->pwm_cfg[which] & ~ADT7462_PWM_CHANNEL_MASK; 1370 temp |= value << ADT7462_PWM_CHANNEL_SHIFT; 1371 1372 mutex_lock(&data->lock); 1373 data->pwm_cfg[which] = temp; 1374 i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_CFG(which), temp); 1375 mutex_unlock(&data->lock); 1376} 1377 1378static ssize_t set_pwm_auto(struct device *dev, 1379 struct device_attribute *devattr, 1380 const char *buf, 1381 size_t count) 1382{ 1383 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1384 struct i2c_client *client = to_i2c_client(dev); 1385 struct adt7462_data *data = i2c_get_clientdata(client); 1386 long temp; 1387 1388 if (kstrtol(buf, 10, &temp)) 1389 return -EINVAL; 1390 1391 switch (temp) { 1392 case 0: /* off */ 1393 set_pwm_channel(client, data, attr->index, 4); 1394 return count; 1395 case 1: /* manual */ 1396 set_pwm_channel(client, data, attr->index, 7); 1397 return count; 1398 default: 1399 return -EINVAL; 1400 } 1401} 1402 1403static ssize_t show_pwm_auto_temp(struct device *dev, 1404 struct device_attribute *devattr, 1405 char *buf) 1406{ 1407 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1408 struct adt7462_data *data = adt7462_update_device(dev); 1409 int channel = data->pwm_cfg[attr->index] >> ADT7462_PWM_CHANNEL_SHIFT; 1410 1411 switch (channel) { 1412 case 0: /* temp[1234] only */ 1413 case 1: 1414 case 2: 1415 case 3: 1416 return sprintf(buf, "%d\n", (1 << channel)); 1417 case 5: /* temp1 & temp4 */ 1418 return sprintf(buf, "9\n"); 1419 case 6: 1420 return sprintf(buf, "15\n"); 1421 default: 1422 return sprintf(buf, "0\n"); 1423 } 1424} 1425 1426static int cvt_auto_temp(int input) 1427{ 1428 if (input == 0xF) 1429 return 6; 1430 if (input == 0x9) 1431 return 5; 1432 if (input < 1 || !is_power_of_2(input)) 1433 return -EINVAL; 1434 return ilog2(input); 1435} 1436 1437static ssize_t set_pwm_auto_temp(struct device *dev, 1438 struct device_attribute *devattr, 1439 const char *buf, 1440 size_t count) 1441{ 1442 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1443 struct i2c_client *client = to_i2c_client(dev); 1444 struct adt7462_data *data = i2c_get_clientdata(client); 1445 long temp; 1446 1447 if (kstrtol(buf, 10, &temp)) 1448 return -EINVAL; 1449 1450 temp = cvt_auto_temp(temp); 1451 if (temp < 0) 1452 return temp; 1453 1454 set_pwm_channel(client, data, attr->index, temp); 1455 1456 return count; 1457} 1458 1459static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, 1460 set_temp_max, 0); 1461static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max, 1462 set_temp_max, 1); 1463static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_max, 1464 set_temp_max, 2); 1465static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_max, 1466 set_temp_max, 3); 1467 1468static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min, 1469 set_temp_min, 0); 1470static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min, 1471 set_temp_min, 1); 1472static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_temp_min, 1473 set_temp_min, 2); 1474static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_temp_min, 1475 set_temp_min, 3); 1476 1477static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); 1478static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); 1479static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); 1480static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3); 1481 1482static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL, 0); 1483static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1); 1484static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2); 1485static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3); 1486 1487static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 1488 ADT7462_ALARM1 | ADT7462_LT_ALARM); 1489static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 1490 ADT7462_ALARM1 | ADT7462_R1T_ALARM); 1491static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1492 ADT7462_ALARM1 | ADT7462_R2T_ALARM); 1493static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL, 1494 ADT7462_ALARM1 | ADT7462_R3T_ALARM); 1495 1496static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO, show_volt_max, 1497 set_volt_max, 0); 1498static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO, show_volt_max, 1499 set_volt_max, 1); 1500static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO, show_volt_max, 1501 set_volt_max, 2); 1502static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO, show_volt_max, 1503 set_volt_max, 3); 1504static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO, show_volt_max, 1505 set_volt_max, 4); 1506static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO, show_volt_max, 1507 set_volt_max, 5); 1508static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO, show_volt_max, 1509 set_volt_max, 6); 1510static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO, show_volt_max, 1511 set_volt_max, 7); 1512static SENSOR_DEVICE_ATTR(in9_max, S_IWUSR | S_IRUGO, show_volt_max, 1513 set_volt_max, 8); 1514static SENSOR_DEVICE_ATTR(in10_max, S_IWUSR | S_IRUGO, show_volt_max, 1515 set_volt_max, 9); 1516static SENSOR_DEVICE_ATTR(in11_max, S_IWUSR | S_IRUGO, show_volt_max, 1517 set_volt_max, 10); 1518static SENSOR_DEVICE_ATTR(in12_max, S_IWUSR | S_IRUGO, show_volt_max, 1519 set_volt_max, 11); 1520static SENSOR_DEVICE_ATTR(in13_max, S_IWUSR | S_IRUGO, show_volt_max, 1521 set_volt_max, 12); 1522 1523static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO, show_volt_min, 1524 set_volt_min, 0); 1525static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO, show_volt_min, 1526 set_volt_min, 1); 1527static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO, show_volt_min, 1528 set_volt_min, 2); 1529static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO, show_volt_min, 1530 set_volt_min, 3); 1531static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO, show_volt_min, 1532 set_volt_min, 4); 1533static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO, show_volt_min, 1534 set_volt_min, 5); 1535static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO, show_volt_min, 1536 set_volt_min, 6); 1537static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO, show_volt_min, 1538 set_volt_min, 7); 1539static SENSOR_DEVICE_ATTR(in9_min, S_IWUSR | S_IRUGO, show_volt_min, 1540 set_volt_min, 8); 1541static SENSOR_DEVICE_ATTR(in10_min, S_IWUSR | S_IRUGO, show_volt_min, 1542 set_volt_min, 9); 1543static SENSOR_DEVICE_ATTR(in11_min, S_IWUSR | S_IRUGO, show_volt_min, 1544 set_volt_min, 10); 1545static SENSOR_DEVICE_ATTR(in12_min, S_IWUSR | S_IRUGO, show_volt_min, 1546 set_volt_min, 11); 1547static SENSOR_DEVICE_ATTR(in13_min, S_IWUSR | S_IRUGO, show_volt_min, 1548 set_volt_min, 12); 1549 1550static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_voltage, NULL, 0); 1551static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_voltage, NULL, 1); 1552static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_voltage, NULL, 2); 1553static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_voltage, NULL, 3); 1554static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_voltage, NULL, 4); 1555static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_voltage, NULL, 5); 1556static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_voltage, NULL, 6); 1557static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_voltage, NULL, 7); 1558static SENSOR_DEVICE_ATTR(in9_input, S_IRUGO, show_voltage, NULL, 8); 1559static SENSOR_DEVICE_ATTR(in10_input, S_IRUGO, show_voltage, NULL, 9); 1560static SENSOR_DEVICE_ATTR(in11_input, S_IRUGO, show_voltage, NULL, 10); 1561static SENSOR_DEVICE_ATTR(in12_input, S_IRUGO, show_voltage, NULL, 11); 1562static SENSOR_DEVICE_ATTR(in13_input, S_IRUGO, show_voltage, NULL, 12); 1563 1564static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_voltage_label, NULL, 0); 1565static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_voltage_label, NULL, 1); 1566static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_voltage_label, NULL, 2); 1567static SENSOR_DEVICE_ATTR(in4_label, S_IRUGO, show_voltage_label, NULL, 3); 1568static SENSOR_DEVICE_ATTR(in5_label, S_IRUGO, show_voltage_label, NULL, 4); 1569static SENSOR_DEVICE_ATTR(in6_label, S_IRUGO, show_voltage_label, NULL, 5); 1570static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_voltage_label, NULL, 6); 1571static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_voltage_label, NULL, 7); 1572static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_voltage_label, NULL, 8); 1573static SENSOR_DEVICE_ATTR(in10_label, S_IRUGO, show_voltage_label, NULL, 9); 1574static SENSOR_DEVICE_ATTR(in11_label, S_IRUGO, show_voltage_label, NULL, 10); 1575static SENSOR_DEVICE_ATTR(in12_label, S_IRUGO, show_voltage_label, NULL, 11); 1576static SENSOR_DEVICE_ATTR(in13_label, S_IRUGO, show_voltage_label, NULL, 12); 1577 1578static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1579 ADT7462_ALARM2 | ADT7462_V0_ALARM); 1580static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 1581 ADT7462_ALARM2 | ADT7462_V7_ALARM); 1582static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 1583 ADT7462_ALARM2 | ADT7462_V2_ALARM); 1584static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 1585 ADT7462_ALARM2 | ADT7462_V6_ALARM); 1586static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 1587 ADT7462_ALARM2 | ADT7462_V5_ALARM); 1588static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 1589 ADT7462_ALARM2 | ADT7462_V4_ALARM); 1590static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 1591 ADT7462_ALARM2 | ADT7462_V3_ALARM); 1592static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 1593 ADT7462_ALARM2 | ADT7462_V1_ALARM); 1594static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 1595 ADT7462_ALARM3 | ADT7462_V10_ALARM); 1596static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL, 1597 ADT7462_ALARM3 | ADT7462_V9_ALARM); 1598static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL, 1599 ADT7462_ALARM3 | ADT7462_V8_ALARM); 1600static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL, 1601 ADT7462_ALARM3 | ADT7462_V11_ALARM); 1602static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL, 1603 ADT7462_ALARM3 | ADT7462_V12_ALARM); 1604 1605static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, 1606 set_fan_min, 0); 1607static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, 1608 set_fan_min, 1); 1609static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, 1610 set_fan_min, 2); 1611static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min, 1612 set_fan_min, 3); 1613static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min, 1614 set_fan_min, 4); 1615static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO, show_fan_min, 1616 set_fan_min, 5); 1617static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO, show_fan_min, 1618 set_fan_min, 6); 1619static SENSOR_DEVICE_ATTR(fan8_min, S_IWUSR | S_IRUGO, show_fan_min, 1620 set_fan_min, 7); 1621 1622static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); 1623static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); 1624static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); 1625static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3); 1626static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4); 1627static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 5); 1628static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 6); 1629static SENSOR_DEVICE_ATTR(fan8_input, S_IRUGO, show_fan, NULL, 7); 1630 1631static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 1632 ADT7462_ALARM4 | ADT7462_F0_ALARM); 1633static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1634 ADT7462_ALARM4 | ADT7462_F1_ALARM); 1635static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 1636 ADT7462_ALARM4 | ADT7462_F2_ALARM); 1637static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 1638 ADT7462_ALARM4 | ADT7462_F3_ALARM); 1639static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 1640 ADT7462_ALARM4 | ADT7462_F4_ALARM); 1641static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 1642 ADT7462_ALARM4 | ADT7462_F5_ALARM); 1643static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 1644 ADT7462_ALARM4 | ADT7462_F6_ALARM); 1645static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_alarm, NULL, 1646 ADT7462_ALARM4 | ADT7462_F7_ALARM); 1647 1648static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO, 1649 show_force_pwm_max, set_force_pwm_max, 0); 1650 1651static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0); 1652static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1); 1653static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2); 1654static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3); 1655 1656static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO, 1657 show_pwm_min, set_pwm_min, 0); 1658static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO, 1659 show_pwm_min, set_pwm_min, 1); 1660static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO, 1661 show_pwm_min, set_pwm_min, 2); 1662static SENSOR_DEVICE_ATTR(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO, 1663 show_pwm_min, set_pwm_min, 3); 1664 1665static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO, 1666 show_pwm_max, set_pwm_max, 0); 1667static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO, 1668 show_pwm_max, set_pwm_max, 1); 1669static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO, 1670 show_pwm_max, set_pwm_max, 2); 1671static SENSOR_DEVICE_ATTR(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO, 1672 show_pwm_max, set_pwm_max, 3); 1673 1674static SENSOR_DEVICE_ATTR(temp1_auto_point1_hyst, S_IWUSR | S_IRUGO, 1675 show_pwm_hyst, set_pwm_hyst, 0); 1676static SENSOR_DEVICE_ATTR(temp2_auto_point1_hyst, S_IWUSR | S_IRUGO, 1677 show_pwm_hyst, set_pwm_hyst, 1); 1678static SENSOR_DEVICE_ATTR(temp3_auto_point1_hyst, S_IWUSR | S_IRUGO, 1679 show_pwm_hyst, set_pwm_hyst, 2); 1680static SENSOR_DEVICE_ATTR(temp4_auto_point1_hyst, S_IWUSR | S_IRUGO, 1681 show_pwm_hyst, set_pwm_hyst, 3); 1682 1683static SENSOR_DEVICE_ATTR(temp1_auto_point2_hyst, S_IWUSR | S_IRUGO, 1684 show_pwm_hyst, set_pwm_hyst, 0); 1685static SENSOR_DEVICE_ATTR(temp2_auto_point2_hyst, S_IWUSR | S_IRUGO, 1686 show_pwm_hyst, set_pwm_hyst, 1); 1687static SENSOR_DEVICE_ATTR(temp3_auto_point2_hyst, S_IWUSR | S_IRUGO, 1688 show_pwm_hyst, set_pwm_hyst, 2); 1689static SENSOR_DEVICE_ATTR(temp4_auto_point2_hyst, S_IWUSR | S_IRUGO, 1690 show_pwm_hyst, set_pwm_hyst, 3); 1691 1692static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp, S_IWUSR | S_IRUGO, 1693 show_pwm_tmin, set_pwm_tmin, 0); 1694static SENSOR_DEVICE_ATTR(temp2_auto_point1_temp, S_IWUSR | S_IRUGO, 1695 show_pwm_tmin, set_pwm_tmin, 1); 1696static SENSOR_DEVICE_ATTR(temp3_auto_point1_temp, S_IWUSR | S_IRUGO, 1697 show_pwm_tmin, set_pwm_tmin, 2); 1698static SENSOR_DEVICE_ATTR(temp4_auto_point1_temp, S_IWUSR | S_IRUGO, 1699 show_pwm_tmin, set_pwm_tmin, 3); 1700 1701static SENSOR_DEVICE_ATTR(temp1_auto_point2_temp, S_IWUSR | S_IRUGO, 1702 show_pwm_tmax, set_pwm_tmax, 0); 1703static SENSOR_DEVICE_ATTR(temp2_auto_point2_temp, S_IWUSR | S_IRUGO, 1704 show_pwm_tmax, set_pwm_tmax, 1); 1705static SENSOR_DEVICE_ATTR(temp3_auto_point2_temp, S_IWUSR | S_IRUGO, 1706 show_pwm_tmax, set_pwm_tmax, 2); 1707static SENSOR_DEVICE_ATTR(temp4_auto_point2_temp, S_IWUSR | S_IRUGO, 1708 show_pwm_tmax, set_pwm_tmax, 3); 1709 1710static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_auto, 1711 set_pwm_auto, 0); 1712static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_auto, 1713 set_pwm_auto, 1); 1714static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_auto, 1715 set_pwm_auto, 2); 1716static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_auto, 1717 set_pwm_auto, 3); 1718 1719static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IWUSR | S_IRUGO, 1720 show_pwm_auto_temp, set_pwm_auto_temp, 0); 1721static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IWUSR | S_IRUGO, 1722 show_pwm_auto_temp, set_pwm_auto_temp, 1); 1723static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IWUSR | S_IRUGO, 1724 show_pwm_auto_temp, set_pwm_auto_temp, 2); 1725static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO, 1726 show_pwm_auto_temp, set_pwm_auto_temp, 3); 1727 1728static struct attribute *adt7462_attr[] = { 1729 &sensor_dev_attr_temp1_max.dev_attr.attr, 1730 &sensor_dev_attr_temp2_max.dev_attr.attr, 1731 &sensor_dev_attr_temp3_max.dev_attr.attr, 1732 &sensor_dev_attr_temp4_max.dev_attr.attr, 1733 1734 &sensor_dev_attr_temp1_min.dev_attr.attr, 1735 &sensor_dev_attr_temp2_min.dev_attr.attr, 1736 &sensor_dev_attr_temp3_min.dev_attr.attr, 1737 &sensor_dev_attr_temp4_min.dev_attr.attr, 1738 1739 &sensor_dev_attr_temp1_input.dev_attr.attr, 1740 &sensor_dev_attr_temp2_input.dev_attr.attr, 1741 &sensor_dev_attr_temp3_input.dev_attr.attr, 1742 &sensor_dev_attr_temp4_input.dev_attr.attr, 1743 1744 &sensor_dev_attr_temp1_label.dev_attr.attr, 1745 &sensor_dev_attr_temp2_label.dev_attr.attr, 1746 &sensor_dev_attr_temp3_label.dev_attr.attr, 1747 &sensor_dev_attr_temp4_label.dev_attr.attr, 1748 1749 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1750 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1751 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1752 &sensor_dev_attr_temp4_alarm.dev_attr.attr, 1753 1754 &sensor_dev_attr_in1_max.dev_attr.attr, 1755 &sensor_dev_attr_in2_max.dev_attr.attr, 1756 &sensor_dev_attr_in3_max.dev_attr.attr, 1757 &sensor_dev_attr_in4_max.dev_attr.attr, 1758 &sensor_dev_attr_in5_max.dev_attr.attr, 1759 &sensor_dev_attr_in6_max.dev_attr.attr, 1760 &sensor_dev_attr_in7_max.dev_attr.attr, 1761 &sensor_dev_attr_in8_max.dev_attr.attr, 1762 &sensor_dev_attr_in9_max.dev_attr.attr, 1763 &sensor_dev_attr_in10_max.dev_attr.attr, 1764 &sensor_dev_attr_in11_max.dev_attr.attr, 1765 &sensor_dev_attr_in12_max.dev_attr.attr, 1766 &sensor_dev_attr_in13_max.dev_attr.attr, 1767 1768 &sensor_dev_attr_in1_min.dev_attr.attr, 1769 &sensor_dev_attr_in2_min.dev_attr.attr, 1770 &sensor_dev_attr_in3_min.dev_attr.attr, 1771 &sensor_dev_attr_in4_min.dev_attr.attr, 1772 &sensor_dev_attr_in5_min.dev_attr.attr, 1773 &sensor_dev_attr_in6_min.dev_attr.attr, 1774 &sensor_dev_attr_in7_min.dev_attr.attr, 1775 &sensor_dev_attr_in8_min.dev_attr.attr, 1776 &sensor_dev_attr_in9_min.dev_attr.attr, 1777 &sensor_dev_attr_in10_min.dev_attr.attr, 1778 &sensor_dev_attr_in11_min.dev_attr.attr, 1779 &sensor_dev_attr_in12_min.dev_attr.attr, 1780 &sensor_dev_attr_in13_min.dev_attr.attr, 1781 1782 &sensor_dev_attr_in1_input.dev_attr.attr, 1783 &sensor_dev_attr_in2_input.dev_attr.attr, 1784 &sensor_dev_attr_in3_input.dev_attr.attr, 1785 &sensor_dev_attr_in4_input.dev_attr.attr, 1786 &sensor_dev_attr_in5_input.dev_attr.attr, 1787 &sensor_dev_attr_in6_input.dev_attr.attr, 1788 &sensor_dev_attr_in7_input.dev_attr.attr, 1789 &sensor_dev_attr_in8_input.dev_attr.attr, 1790 &sensor_dev_attr_in9_input.dev_attr.attr, 1791 &sensor_dev_attr_in10_input.dev_attr.attr, 1792 &sensor_dev_attr_in11_input.dev_attr.attr, 1793 &sensor_dev_attr_in12_input.dev_attr.attr, 1794 &sensor_dev_attr_in13_input.dev_attr.attr, 1795 1796 &sensor_dev_attr_in1_label.dev_attr.attr, 1797 &sensor_dev_attr_in2_label.dev_attr.attr, 1798 &sensor_dev_attr_in3_label.dev_attr.attr, 1799 &sensor_dev_attr_in4_label.dev_attr.attr, 1800 &sensor_dev_attr_in5_label.dev_attr.attr, 1801 &sensor_dev_attr_in6_label.dev_attr.attr, 1802 &sensor_dev_attr_in7_label.dev_attr.attr, 1803 &sensor_dev_attr_in8_label.dev_attr.attr, 1804 &sensor_dev_attr_in9_label.dev_attr.attr, 1805 &sensor_dev_attr_in10_label.dev_attr.attr, 1806 &sensor_dev_attr_in11_label.dev_attr.attr, 1807 &sensor_dev_attr_in12_label.dev_attr.attr, 1808 &sensor_dev_attr_in13_label.dev_attr.attr, 1809 1810 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1811 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1812 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1813 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1814 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1815 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1816 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1817 &sensor_dev_attr_in8_alarm.dev_attr.attr, 1818 &sensor_dev_attr_in9_alarm.dev_attr.attr, 1819 &sensor_dev_attr_in10_alarm.dev_attr.attr, 1820 &sensor_dev_attr_in11_alarm.dev_attr.attr, 1821 &sensor_dev_attr_in12_alarm.dev_attr.attr, 1822 &sensor_dev_attr_in13_alarm.dev_attr.attr, 1823 1824 &sensor_dev_attr_fan1_min.dev_attr.attr, 1825 &sensor_dev_attr_fan2_min.dev_attr.attr, 1826 &sensor_dev_attr_fan3_min.dev_attr.attr, 1827 &sensor_dev_attr_fan4_min.dev_attr.attr, 1828 &sensor_dev_attr_fan5_min.dev_attr.attr, 1829 &sensor_dev_attr_fan6_min.dev_attr.attr, 1830 &sensor_dev_attr_fan7_min.dev_attr.attr, 1831 &sensor_dev_attr_fan8_min.dev_attr.attr, 1832 1833 &sensor_dev_attr_fan1_input.dev_attr.attr, 1834 &sensor_dev_attr_fan2_input.dev_attr.attr, 1835 &sensor_dev_attr_fan3_input.dev_attr.attr, 1836 &sensor_dev_attr_fan4_input.dev_attr.attr, 1837 &sensor_dev_attr_fan5_input.dev_attr.attr, 1838 &sensor_dev_attr_fan6_input.dev_attr.attr, 1839 &sensor_dev_attr_fan7_input.dev_attr.attr, 1840 &sensor_dev_attr_fan8_input.dev_attr.attr, 1841 1842 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1843 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1844 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1845 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1846 &sensor_dev_attr_fan5_alarm.dev_attr.attr, 1847 &sensor_dev_attr_fan6_alarm.dev_attr.attr, 1848 &sensor_dev_attr_fan7_alarm.dev_attr.attr, 1849 &sensor_dev_attr_fan8_alarm.dev_attr.attr, 1850 1851 &sensor_dev_attr_force_pwm_max.dev_attr.attr, 1852 &sensor_dev_attr_pwm1.dev_attr.attr, 1853 &sensor_dev_attr_pwm2.dev_attr.attr, 1854 &sensor_dev_attr_pwm3.dev_attr.attr, 1855 &sensor_dev_attr_pwm4.dev_attr.attr, 1856 1857 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1858 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1859 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1860 &sensor_dev_attr_pwm4_auto_point1_pwm.dev_attr.attr, 1861 1862 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1863 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1864 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1865 &sensor_dev_attr_pwm4_auto_point2_pwm.dev_attr.attr, 1866 1867 &sensor_dev_attr_temp1_auto_point1_hyst.dev_attr.attr, 1868 &sensor_dev_attr_temp2_auto_point1_hyst.dev_attr.attr, 1869 &sensor_dev_attr_temp3_auto_point1_hyst.dev_attr.attr, 1870 &sensor_dev_attr_temp4_auto_point1_hyst.dev_attr.attr, 1871 1872 &sensor_dev_attr_temp1_auto_point2_hyst.dev_attr.attr, 1873 &sensor_dev_attr_temp2_auto_point2_hyst.dev_attr.attr, 1874 &sensor_dev_attr_temp3_auto_point2_hyst.dev_attr.attr, 1875 &sensor_dev_attr_temp4_auto_point2_hyst.dev_attr.attr, 1876 1877 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, 1878 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, 1879 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr, 1880 &sensor_dev_attr_temp4_auto_point1_temp.dev_attr.attr, 1881 1882 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, 1883 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, 1884 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr, 1885 &sensor_dev_attr_temp4_auto_point2_temp.dev_attr.attr, 1886 1887 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1888 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1889 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1890 &sensor_dev_attr_pwm4_enable.dev_attr.attr, 1891 1892 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1893 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1894 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1895 &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr, 1896 NULL 1897}; 1898 1899/* Return 0 if detection is successful, -ENODEV otherwise */ 1900static int adt7462_detect(struct i2c_client *client, 1901 struct i2c_board_info *info) 1902{ 1903 struct i2c_adapter *adapter = client->adapter; 1904 int vendor, device, revision; 1905 1906 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1907 return -ENODEV; 1908 1909 vendor = i2c_smbus_read_byte_data(client, ADT7462_REG_VENDOR); 1910 if (vendor != ADT7462_VENDOR) 1911 return -ENODEV; 1912 1913 device = i2c_smbus_read_byte_data(client, ADT7462_REG_DEVICE); 1914 if (device != ADT7462_DEVICE) 1915 return -ENODEV; 1916 1917 revision = i2c_smbus_read_byte_data(client, ADT7462_REG_REVISION); 1918 if (revision != ADT7462_REVISION) 1919 return -ENODEV; 1920 1921 strlcpy(info->type, "adt7462", I2C_NAME_SIZE); 1922 1923 return 0; 1924} 1925 1926static int adt7462_probe(struct i2c_client *client, 1927 const struct i2c_device_id *id) 1928{ 1929 struct adt7462_data *data; 1930 int err; 1931 1932 data = devm_kzalloc(&client->dev, sizeof(struct adt7462_data), 1933 GFP_KERNEL); 1934 if (!data) 1935 return -ENOMEM; 1936 1937 i2c_set_clientdata(client, data); 1938 mutex_init(&data->lock); 1939 1940 dev_info(&client->dev, "%s chip found\n", client->name); 1941 1942 /* Register sysfs hooks */ 1943 data->attrs.attrs = adt7462_attr; 1944 err = sysfs_create_group(&client->dev.kobj, &data->attrs); 1945 if (err) 1946 return err; 1947 1948 data->hwmon_dev = hwmon_device_register(&client->dev); 1949 if (IS_ERR(data->hwmon_dev)) { 1950 err = PTR_ERR(data->hwmon_dev); 1951 goto exit_remove; 1952 } 1953 1954 return 0; 1955 1956exit_remove: 1957 sysfs_remove_group(&client->dev.kobj, &data->attrs); 1958 return err; 1959} 1960 1961static int adt7462_remove(struct i2c_client *client) 1962{ 1963 struct adt7462_data *data = i2c_get_clientdata(client); 1964 1965 hwmon_device_unregister(data->hwmon_dev); 1966 sysfs_remove_group(&client->dev.kobj, &data->attrs); 1967 return 0; 1968} 1969 1970module_i2c_driver(adt7462_driver); 1971 1972MODULE_AUTHOR("Darrick J. Wong <darrick.wong@oracle.com>"); 1973MODULE_DESCRIPTION("ADT7462 driver"); 1974MODULE_LICENSE("GPL");