1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives 4 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc. 5 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net> 6 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com> 7 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de> 8 * 9 * Derived from the lm83 driver by Jean Delvare 10 */ 11 12#include <linux/module.h> 13#include <linux/init.h> 14#include <linux/slab.h> 15#include <linux/i2c.h> 16#include <linux/hwmon.h> 17#include <linux/hwmon-sysfs.h> 18#include <linux/hwmon-vid.h> 19#include <linux/err.h> 20#include <linux/jiffies.h> 21#include <linux/of.h> 22#include <linux/util_macros.h> 23 24/* Indexes for the sysfs hooks */ 25 26#define INPUT 0 27#define MIN 1 28#define MAX 2 29#define CONTROL 3 30#define OFFSET 3 31#define AUTOMIN 4 32#define THERM 5 33#define HYSTERSIS 6 34 35/* 36 * These are unique identifiers for the sysfs functions - unlike the 37 * numbers above, these are not also indexes into an array 38 */ 39 40#define ALARM 9 41#define FAULT 10 42 43/* 7475 Common Registers */ 44 45#define REG_DEVREV2 0x12 /* ADT7490 only */ 46#define REG_IMON 0x1D /* ADT7490 only */ 47 48#define REG_VTT 0x1E /* ADT7490 only */ 49#define REG_EXTEND3 0x1F /* ADT7490 only */ 50 51#define REG_VOLTAGE_BASE 0x20 52#define REG_TEMP_BASE 0x25 53#define REG_TACH_BASE 0x28 54#define REG_PWM_BASE 0x30 55#define REG_PWM_MAX_BASE 0x38 56 57#define REG_DEVID 0x3D 58#define REG_VENDID 0x3E 59#define REG_DEVID2 0x3F 60 61#define REG_CONFIG1 0x40 62 63#define REG_STATUS1 0x41 64#define REG_STATUS2 0x42 65 66#define REG_VID 0x43 /* ADT7476 only */ 67 68#define REG_VOLTAGE_MIN_BASE 0x44 69#define REG_VOLTAGE_MAX_BASE 0x45 70 71#define REG_TEMP_MIN_BASE 0x4E 72#define REG_TEMP_MAX_BASE 0x4F 73 74#define REG_TACH_MIN_BASE 0x54 75 76#define REG_PWM_CONFIG_BASE 0x5C 77 78#define REG_TEMP_TRANGE_BASE 0x5F 79 80#define REG_ENHANCE_ACOUSTICS1 0x62 81#define REG_ENHANCE_ACOUSTICS2 0x63 82 83#define REG_PWM_MIN_BASE 0x64 84 85#define REG_TEMP_TMIN_BASE 0x67 86#define REG_TEMP_THERM_BASE 0x6A 87 88#define REG_REMOTE1_HYSTERSIS 0x6D 89#define REG_REMOTE2_HYSTERSIS 0x6E 90 91#define REG_TEMP_OFFSET_BASE 0x70 92 93#define REG_CONFIG2 0x73 94 95#define REG_EXTEND1 0x76 96#define REG_EXTEND2 0x77 97 98#define REG_CONFIG3 0x78 99#define REG_CONFIG5 0x7C 100#define REG_CONFIG4 0x7D 101 102#define REG_STATUS4 0x81 /* ADT7490 only */ 103 104#define REG_VTT_MIN 0x84 /* ADT7490 only */ 105#define REG_VTT_MAX 0x86 /* ADT7490 only */ 106 107#define REG_IMON_MIN 0x85 /* ADT7490 only */ 108#define REG_IMON_MAX 0x87 /* ADT7490 only */ 109 110#define VID_VIDSEL 0x80 /* ADT7476 only */ 111 112#define CONFIG2_ATTN 0x20 113 114#define CONFIG3_SMBALERT 0x01 115#define CONFIG3_THERM 0x02 116 117#define CONFIG4_PINFUNC 0x03 118#define CONFIG4_THERM 0x01 119#define CONFIG4_SMBALERT 0x02 120#define CONFIG4_MAXDUTY 0x08 121#define CONFIG4_ATTN_IN10 0x30 122#define CONFIG4_ATTN_IN43 0xC0 123 124#define CONFIG5_TWOSCOMP 0x01 125#define CONFIG5_TEMPOFFSET 0x02 126#define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */ 127 128/* ADT7475 Settings */ 129 130#define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt or Imon */ 131#define ADT7475_TEMP_COUNT 3 132#define ADT7475_TACH_COUNT 4 133#define ADT7475_PWM_COUNT 3 134 135/* Macro to read the registers */ 136 137#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg)) 138 139/* Macros to easily index the registers */ 140 141#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2)) 142#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2)) 143 144#define PWM_REG(idx) (REG_PWM_BASE + (idx)) 145#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx)) 146#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx)) 147#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx)) 148 149#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx)) 150#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2)) 151#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2)) 152 153#define TEMP_REG(idx) (REG_TEMP_BASE + (idx)) 154#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2)) 155#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2)) 156#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx)) 157#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx)) 158#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx)) 159#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx)) 160 161static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 162 163enum chips { adt7473, adt7475, adt7476, adt7490 }; 164 165static const struct i2c_device_id adt7475_id[] = { 166 { "adt7473", adt7473 }, 167 { "adt7475", adt7475 }, 168 { "adt7476", adt7476 }, 169 { "adt7490", adt7490 }, 170 { } 171}; 172MODULE_DEVICE_TABLE(i2c, adt7475_id); 173 174static const struct of_device_id __maybe_unused adt7475_of_match[] = { 175 { 176 .compatible = "adi,adt7473", 177 .data = (void *)adt7473 178 }, 179 { 180 .compatible = "adi,adt7475", 181 .data = (void *)adt7475 182 }, 183 { 184 .compatible = "adi,adt7476", 185 .data = (void *)adt7476 186 }, 187 { 188 .compatible = "adi,adt7490", 189 .data = (void *)adt7490 190 }, 191 { }, 192}; 193MODULE_DEVICE_TABLE(of, adt7475_of_match); 194 195struct adt7475_data { 196 struct i2c_client *client; 197 struct mutex lock; 198 199 unsigned long measure_updated; 200 bool valid; 201 202 u8 config2; 203 u8 config4; 204 u8 config5; 205 u8 has_voltage; 206 u8 bypass_attn; /* Bypass voltage attenuator */ 207 u8 has_pwm2:1; 208 u8 has_fan4:1; 209 u8 has_vid:1; 210 u32 alarms; 211 u16 voltage[3][7]; 212 u16 temp[7][3]; 213 u16 tach[2][4]; 214 u8 pwm[4][3]; 215 u8 range[3]; 216 u8 pwmctl[3]; 217 u8 pwmchan[3]; 218 u8 enh_acoustics[2]; 219 220 u8 vid; 221 u8 vrm; 222 const struct attribute_group *groups[10]; 223}; 224 225static struct i2c_driver adt7475_driver; 226static struct adt7475_data *adt7475_update_device(struct device *dev); 227static void adt7475_read_hystersis(struct i2c_client *client); 228static void adt7475_read_pwm(struct i2c_client *client, int index); 229 230/* Given a temp value, convert it to register value */ 231 232static inline u16 temp2reg(struct adt7475_data *data, long val) 233{ 234 u16 ret; 235 236 if (!(data->config5 & CONFIG5_TWOSCOMP)) { 237 val = clamp_val(val, -64000, 191000); 238 ret = (val + 64500) / 1000; 239 } else { 240 val = clamp_val(val, -128000, 127000); 241 if (val < -500) 242 ret = (256500 + val) / 1000; 243 else 244 ret = (val + 500) / 1000; 245 } 246 247 return ret << 2; 248} 249 250/* Given a register value, convert it to a real temp value */ 251 252static inline int reg2temp(struct adt7475_data *data, u16 reg) 253{ 254 if (data->config5 & CONFIG5_TWOSCOMP) { 255 if (reg >= 512) 256 return (reg - 1024) * 250; 257 else 258 return reg * 250; 259 } else 260 return (reg - 256) * 250; 261} 262 263static inline int tach2rpm(u16 tach) 264{ 265 if (tach == 0 || tach == 0xFFFF) 266 return 0; 267 268 return (90000 * 60) / tach; 269} 270 271static inline u16 rpm2tach(unsigned long rpm) 272{ 273 if (rpm == 0) 274 return 0; 275 276 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF); 277} 278 279/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */ 280static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 2][2] = { 281 { 45, 94 }, /* +2.5V */ 282 { 175, 525 }, /* Vccp */ 283 { 68, 71 }, /* Vcc */ 284 { 93, 47 }, /* +5V */ 285 { 120, 20 }, /* +12V */ 286 { 45, 45 }, /* Vtt */ 287 { 45, 45 }, /* Imon */ 288}; 289 290static inline int reg2volt(int channel, u16 reg, u8 bypass_attn) 291{ 292 const int *r = adt7473_in_scaling[channel]; 293 294 if (bypass_attn & (1 << channel)) 295 return DIV_ROUND_CLOSEST(reg * 2250, 1024); 296 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024); 297} 298 299static inline u16 volt2reg(int channel, long volt, u8 bypass_attn) 300{ 301 const int *r = adt7473_in_scaling[channel]; 302 long reg; 303 304 if (bypass_attn & (1 << channel)) 305 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250); 306 else 307 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024, 308 (r[0] + r[1]) * 2250); 309 return clamp_val(reg, 0, 1023) & (0xff << 2); 310} 311 312static int adt7475_read_word(struct i2c_client *client, int reg) 313{ 314 int val1, val2; 315 316 val1 = i2c_smbus_read_byte_data(client, reg); 317 if (val1 < 0) 318 return val1; 319 val2 = i2c_smbus_read_byte_data(client, reg + 1); 320 if (val2 < 0) 321 return val2; 322 323 return val1 | (val2 << 8); 324} 325 326static void adt7475_write_word(struct i2c_client *client, int reg, u16 val) 327{ 328 i2c_smbus_write_byte_data(client, reg + 1, val >> 8); 329 i2c_smbus_write_byte_data(client, reg, val & 0xFF); 330} 331 332static ssize_t voltage_show(struct device *dev, struct device_attribute *attr, 333 char *buf) 334{ 335 struct adt7475_data *data = adt7475_update_device(dev); 336 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 337 unsigned short val; 338 339 if (IS_ERR(data)) 340 return PTR_ERR(data); 341 342 switch (sattr->nr) { 343 case ALARM: 344 return sprintf(buf, "%d\n", 345 (data->alarms >> sattr->index) & 1); 346 default: 347 val = data->voltage[sattr->nr][sattr->index]; 348 return sprintf(buf, "%d\n", 349 reg2volt(sattr->index, val, data->bypass_attn)); 350 } 351} 352 353static ssize_t voltage_store(struct device *dev, 354 struct device_attribute *attr, const char *buf, 355 size_t count) 356{ 357 358 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 359 struct adt7475_data *data = dev_get_drvdata(dev); 360 struct i2c_client *client = data->client; 361 unsigned char reg; 362 long val; 363 364 if (kstrtol(buf, 10, &val)) 365 return -EINVAL; 366 367 mutex_lock(&data->lock); 368 369 data->voltage[sattr->nr][sattr->index] = 370 volt2reg(sattr->index, val, data->bypass_attn); 371 372 if (sattr->index < ADT7475_VOLTAGE_COUNT) { 373 if (sattr->nr == MIN) 374 reg = VOLTAGE_MIN_REG(sattr->index); 375 else 376 reg = VOLTAGE_MAX_REG(sattr->index); 377 } else if (sattr->index == 5) { 378 if (sattr->nr == MIN) 379 reg = REG_VTT_MIN; 380 else 381 reg = REG_VTT_MAX; 382 } else { 383 if (sattr->nr == MIN) 384 reg = REG_IMON_MIN; 385 else 386 reg = REG_IMON_MAX; 387 } 388 389 i2c_smbus_write_byte_data(client, reg, 390 data->voltage[sattr->nr][sattr->index] >> 2); 391 mutex_unlock(&data->lock); 392 393 return count; 394} 395 396static ssize_t temp_show(struct device *dev, struct device_attribute *attr, 397 char *buf) 398{ 399 struct adt7475_data *data = adt7475_update_device(dev); 400 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 401 int out; 402 403 if (IS_ERR(data)) 404 return PTR_ERR(data); 405 406 switch (sattr->nr) { 407 case HYSTERSIS: 408 mutex_lock(&data->lock); 409 out = data->temp[sattr->nr][sattr->index]; 410 if (sattr->index != 1) 411 out = (out >> 4) & 0xF; 412 else 413 out = (out & 0xF); 414 /* 415 * Show the value as an absolute number tied to 416 * THERM 417 */ 418 out = reg2temp(data, data->temp[THERM][sattr->index]) - 419 out * 1000; 420 mutex_unlock(&data->lock); 421 break; 422 423 case OFFSET: 424 /* 425 * Offset is always 2's complement, regardless of the 426 * setting in CONFIG5 427 */ 428 mutex_lock(&data->lock); 429 out = (s8)data->temp[sattr->nr][sattr->index]; 430 if (data->config5 & CONFIG5_TEMPOFFSET) 431 out *= 1000; 432 else 433 out *= 500; 434 mutex_unlock(&data->lock); 435 break; 436 437 case ALARM: 438 out = (data->alarms >> (sattr->index + 4)) & 1; 439 break; 440 441 case FAULT: 442 /* Note - only for remote1 and remote2 */ 443 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000)); 444 break; 445 446 default: 447 /* All other temp values are in the configured format */ 448 out = reg2temp(data, data->temp[sattr->nr][sattr->index]); 449 } 450 451 return sprintf(buf, "%d\n", out); 452} 453 454static ssize_t temp_store(struct device *dev, struct device_attribute *attr, 455 const char *buf, size_t count) 456{ 457 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 458 struct adt7475_data *data = dev_get_drvdata(dev); 459 struct i2c_client *client = data->client; 460 unsigned char reg = 0; 461 u8 out; 462 int temp; 463 long val; 464 465 if (kstrtol(buf, 10, &val)) 466 return -EINVAL; 467 468 mutex_lock(&data->lock); 469 470 /* We need the config register in all cases for temp <-> reg conv. */ 471 data->config5 = adt7475_read(REG_CONFIG5); 472 473 switch (sattr->nr) { 474 case OFFSET: 475 if (data->config5 & CONFIG5_TEMPOFFSET) { 476 val = clamp_val(val, -63000, 127000); 477 out = data->temp[OFFSET][sattr->index] = val / 1000; 478 } else { 479 val = clamp_val(val, -63000, 64000); 480 out = data->temp[OFFSET][sattr->index] = val / 500; 481 } 482 break; 483 484 case HYSTERSIS: 485 /* 486 * The value will be given as an absolute value, turn it 487 * into an offset based on THERM 488 */ 489 490 /* Read fresh THERM and HYSTERSIS values from the chip */ 491 data->temp[THERM][sattr->index] = 492 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2; 493 adt7475_read_hystersis(client); 494 495 temp = reg2temp(data, data->temp[THERM][sattr->index]); 496 val = clamp_val(val, temp - 15000, temp); 497 val = (temp - val) / 1000; 498 499 if (sattr->index != 1) { 500 data->temp[HYSTERSIS][sattr->index] &= 0x0F; 501 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4; 502 } else { 503 data->temp[HYSTERSIS][sattr->index] &= 0xF0; 504 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF); 505 } 506 507 out = data->temp[HYSTERSIS][sattr->index]; 508 break; 509 510 default: 511 data->temp[sattr->nr][sattr->index] = temp2reg(data, val); 512 513 /* 514 * We maintain an extra 2 digits of precision for simplicity 515 * - shift those back off before writing the value 516 */ 517 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2); 518 } 519 520 switch (sattr->nr) { 521 case MIN: 522 reg = TEMP_MIN_REG(sattr->index); 523 break; 524 case MAX: 525 reg = TEMP_MAX_REG(sattr->index); 526 break; 527 case OFFSET: 528 reg = TEMP_OFFSET_REG(sattr->index); 529 break; 530 case AUTOMIN: 531 reg = TEMP_TMIN_REG(sattr->index); 532 break; 533 case THERM: 534 reg = TEMP_THERM_REG(sattr->index); 535 break; 536 case HYSTERSIS: 537 if (sattr->index != 2) 538 reg = REG_REMOTE1_HYSTERSIS; 539 else 540 reg = REG_REMOTE2_HYSTERSIS; 541 542 break; 543 } 544 545 i2c_smbus_write_byte_data(client, reg, out); 546 547 mutex_unlock(&data->lock); 548 return count; 549} 550 551/* Assuming CONFIG6[SLOW] is 0 */ 552static const int ad7475_st_map[] = { 553 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800, 554}; 555 556static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr, 557 char *buf) 558{ 559 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 560 struct adt7475_data *data = dev_get_drvdata(dev); 561 long val; 562 563 switch (sattr->index) { 564 case 0: 565 val = data->enh_acoustics[0] & 0xf; 566 break; 567 case 1: 568 val = data->enh_acoustics[1] & 0xf; 569 break; 570 case 2: 571 default: 572 val = (data->enh_acoustics[1] >> 4) & 0xf; 573 break; 574 } 575 576 if (val & 0x8) 577 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]); 578 else 579 return sprintf(buf, "0\n"); 580} 581 582static ssize_t temp_st_store(struct device *dev, 583 struct device_attribute *attr, const char *buf, 584 size_t count) 585{ 586 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 587 struct adt7475_data *data = dev_get_drvdata(dev); 588 struct i2c_client *client = data->client; 589 unsigned char reg; 590 int shift, idx; 591 ulong val; 592 593 if (kstrtoul(buf, 10, &val)) 594 return -EINVAL; 595 596 switch (sattr->index) { 597 case 0: 598 reg = REG_ENHANCE_ACOUSTICS1; 599 shift = 0; 600 idx = 0; 601 break; 602 case 1: 603 reg = REG_ENHANCE_ACOUSTICS2; 604 shift = 0; 605 idx = 1; 606 break; 607 case 2: 608 default: 609 reg = REG_ENHANCE_ACOUSTICS2; 610 shift = 4; 611 idx = 1; 612 break; 613 } 614 615 if (val > 0) { 616 val = find_closest_descending(val, ad7475_st_map, 617 ARRAY_SIZE(ad7475_st_map)); 618 val |= 0x8; 619 } 620 621 mutex_lock(&data->lock); 622 623 data->enh_acoustics[idx] &= ~(0xf << shift); 624 data->enh_acoustics[idx] |= (val << shift); 625 626 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]); 627 628 mutex_unlock(&data->lock); 629 630 return count; 631} 632 633/* 634 * Table of autorange values - the user will write the value in millidegrees, 635 * and we'll convert it 636 */ 637static const int autorange_table[] = { 638 2000, 2500, 3330, 4000, 5000, 6670, 8000, 639 10000, 13330, 16000, 20000, 26670, 32000, 40000, 640 53330, 80000 641}; 642 643static ssize_t point2_show(struct device *dev, struct device_attribute *attr, 644 char *buf) 645{ 646 struct adt7475_data *data = adt7475_update_device(dev); 647 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 648 int out, val; 649 650 if (IS_ERR(data)) 651 return PTR_ERR(data); 652 653 mutex_lock(&data->lock); 654 out = (data->range[sattr->index] >> 4) & 0x0F; 655 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 656 mutex_unlock(&data->lock); 657 658 return sprintf(buf, "%d\n", val + autorange_table[out]); 659} 660 661static ssize_t point2_store(struct device *dev, struct device_attribute *attr, 662 const char *buf, size_t count) 663{ 664 struct adt7475_data *data = dev_get_drvdata(dev); 665 struct i2c_client *client = data->client; 666 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 667 int temp; 668 long val; 669 670 if (kstrtol(buf, 10, &val)) 671 return -EINVAL; 672 673 mutex_lock(&data->lock); 674 675 /* Get a fresh copy of the needed registers */ 676 data->config5 = adt7475_read(REG_CONFIG5); 677 data->temp[AUTOMIN][sattr->index] = 678 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2; 679 data->range[sattr->index] = 680 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 681 682 /* 683 * The user will write an absolute value, so subtract the start point 684 * to figure the range 685 */ 686 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 687 val = clamp_val(val, temp + autorange_table[0], 688 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]); 689 val -= temp; 690 691 /* Find the nearest table entry to what the user wrote */ 692 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table)); 693 694 data->range[sattr->index] &= ~0xF0; 695 data->range[sattr->index] |= val << 4; 696 697 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 698 data->range[sattr->index]); 699 700 mutex_unlock(&data->lock); 701 return count; 702} 703 704static ssize_t tach_show(struct device *dev, struct device_attribute *attr, 705 char *buf) 706{ 707 struct adt7475_data *data = adt7475_update_device(dev); 708 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 709 int out; 710 711 if (IS_ERR(data)) 712 return PTR_ERR(data); 713 714 if (sattr->nr == ALARM) 715 out = (data->alarms >> (sattr->index + 10)) & 1; 716 else 717 out = tach2rpm(data->tach[sattr->nr][sattr->index]); 718 719 return sprintf(buf, "%d\n", out); 720} 721 722static ssize_t tach_store(struct device *dev, struct device_attribute *attr, 723 const char *buf, size_t count) 724{ 725 726 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 727 struct adt7475_data *data = dev_get_drvdata(dev); 728 struct i2c_client *client = data->client; 729 unsigned long val; 730 731 if (kstrtoul(buf, 10, &val)) 732 return -EINVAL; 733 734 mutex_lock(&data->lock); 735 736 data->tach[MIN][sattr->index] = rpm2tach(val); 737 738 adt7475_write_word(client, TACH_MIN_REG(sattr->index), 739 data->tach[MIN][sattr->index]); 740 741 mutex_unlock(&data->lock); 742 return count; 743} 744 745static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, 746 char *buf) 747{ 748 struct adt7475_data *data = adt7475_update_device(dev); 749 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 750 751 if (IS_ERR(data)) 752 return PTR_ERR(data); 753 754 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]); 755} 756 757static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr, 758 char *buf) 759{ 760 struct adt7475_data *data = adt7475_update_device(dev); 761 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 762 763 if (IS_ERR(data)) 764 return PTR_ERR(data); 765 766 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]); 767} 768 769static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr, 770 char *buf) 771{ 772 struct adt7475_data *data = adt7475_update_device(dev); 773 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 774 775 if (IS_ERR(data)) 776 return PTR_ERR(data); 777 778 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]); 779} 780 781static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, 782 const char *buf, size_t count) 783{ 784 785 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 786 struct adt7475_data *data = dev_get_drvdata(dev); 787 struct i2c_client *client = data->client; 788 unsigned char reg = 0; 789 long val; 790 791 if (kstrtol(buf, 10, &val)) 792 return -EINVAL; 793 794 mutex_lock(&data->lock); 795 796 switch (sattr->nr) { 797 case INPUT: 798 /* Get a fresh value for CONTROL */ 799 data->pwm[CONTROL][sattr->index] = 800 adt7475_read(PWM_CONFIG_REG(sattr->index)); 801 802 /* 803 * If we are not in manual mode, then we shouldn't allow 804 * the user to set the pwm speed 805 */ 806 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) { 807 mutex_unlock(&data->lock); 808 return count; 809 } 810 811 reg = PWM_REG(sattr->index); 812 break; 813 814 case MIN: 815 reg = PWM_MIN_REG(sattr->index); 816 break; 817 818 case MAX: 819 reg = PWM_MAX_REG(sattr->index); 820 break; 821 } 822 823 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF); 824 i2c_smbus_write_byte_data(client, reg, 825 data->pwm[sattr->nr][sattr->index]); 826 mutex_unlock(&data->lock); 827 828 return count; 829} 830 831static ssize_t stall_disable_show(struct device *dev, 832 struct device_attribute *attr, char *buf) 833{ 834 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 835 struct adt7475_data *data = dev_get_drvdata(dev); 836 837 u8 mask = BIT(5 + sattr->index); 838 839 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask)); 840} 841 842static ssize_t stall_disable_store(struct device *dev, 843 struct device_attribute *attr, 844 const char *buf, size_t count) 845{ 846 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 847 struct adt7475_data *data = dev_get_drvdata(dev); 848 struct i2c_client *client = data->client; 849 long val; 850 u8 mask = BIT(5 + sattr->index); 851 852 if (kstrtol(buf, 10, &val)) 853 return -EINVAL; 854 855 mutex_lock(&data->lock); 856 857 data->enh_acoustics[0] &= ~mask; 858 if (val) 859 data->enh_acoustics[0] |= mask; 860 861 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1, 862 data->enh_acoustics[0]); 863 864 mutex_unlock(&data->lock); 865 866 return count; 867} 868 869/* Called by set_pwmctrl and set_pwmchan */ 870 871static int hw_set_pwm(struct i2c_client *client, int index, 872 unsigned int pwmctl, unsigned int pwmchan) 873{ 874 struct adt7475_data *data = i2c_get_clientdata(client); 875 long val = 0; 876 877 switch (pwmctl) { 878 case 0: 879 val = 0x03; /* Run at full speed */ 880 break; 881 case 1: 882 val = 0x07; /* Manual mode */ 883 break; 884 case 2: 885 switch (pwmchan) { 886 case 1: 887 /* Remote1 controls PWM */ 888 val = 0x00; 889 break; 890 case 2: 891 /* local controls PWM */ 892 val = 0x01; 893 break; 894 case 4: 895 /* remote2 controls PWM */ 896 val = 0x02; 897 break; 898 case 6: 899 /* local/remote2 control PWM */ 900 val = 0x05; 901 break; 902 case 7: 903 /* All three control PWM */ 904 val = 0x06; 905 break; 906 default: 907 return -EINVAL; 908 } 909 break; 910 default: 911 return -EINVAL; 912 } 913 914 data->pwmctl[index] = pwmctl; 915 data->pwmchan[index] = pwmchan; 916 917 data->pwm[CONTROL][index] &= ~0xE0; 918 data->pwm[CONTROL][index] |= (val & 7) << 5; 919 920 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 921 data->pwm[CONTROL][index]); 922 923 return 0; 924} 925 926static ssize_t pwmchan_store(struct device *dev, 927 struct device_attribute *attr, const char *buf, 928 size_t count) 929{ 930 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 931 struct adt7475_data *data = dev_get_drvdata(dev); 932 struct i2c_client *client = data->client; 933 int r; 934 long val; 935 936 if (kstrtol(buf, 10, &val)) 937 return -EINVAL; 938 939 mutex_lock(&data->lock); 940 /* Read Modify Write PWM values */ 941 adt7475_read_pwm(client, sattr->index); 942 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val); 943 if (r) 944 count = r; 945 mutex_unlock(&data->lock); 946 947 return count; 948} 949 950static ssize_t pwmctrl_store(struct device *dev, 951 struct device_attribute *attr, const char *buf, 952 size_t count) 953{ 954 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 955 struct adt7475_data *data = dev_get_drvdata(dev); 956 struct i2c_client *client = data->client; 957 int r; 958 long val; 959 960 if (kstrtol(buf, 10, &val)) 961 return -EINVAL; 962 963 mutex_lock(&data->lock); 964 /* Read Modify Write PWM values */ 965 adt7475_read_pwm(client, sattr->index); 966 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]); 967 if (r) 968 count = r; 969 mutex_unlock(&data->lock); 970 971 return count; 972} 973 974/* List of frequencies for the PWM */ 975static const int pwmfreq_table[] = { 976 11, 14, 22, 29, 35, 44, 58, 88, 22500 977}; 978 979static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr, 980 char *buf) 981{ 982 struct adt7475_data *data = adt7475_update_device(dev); 983 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 984 int idx; 985 986 if (IS_ERR(data)) 987 return PTR_ERR(data); 988 idx = clamp_val(data->range[sattr->index] & 0xf, 0, 989 ARRAY_SIZE(pwmfreq_table) - 1); 990 991 return sprintf(buf, "%d\n", pwmfreq_table[idx]); 992} 993 994static ssize_t pwmfreq_store(struct device *dev, 995 struct device_attribute *attr, const char *buf, 996 size_t count) 997{ 998 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 999 struct adt7475_data *data = dev_get_drvdata(dev); 1000 struct i2c_client *client = data->client; 1001 int out; 1002 long val; 1003 1004 if (kstrtol(buf, 10, &val)) 1005 return -EINVAL; 1006 1007 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table)); 1008 1009 mutex_lock(&data->lock); 1010 1011 data->range[sattr->index] = 1012 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 1013 data->range[sattr->index] &= ~0xf; 1014 data->range[sattr->index] |= out; 1015 1016 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 1017 data->range[sattr->index]); 1018 1019 mutex_unlock(&data->lock); 1020 return count; 1021} 1022 1023static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev, 1024 struct device_attribute *devattr, 1025 char *buf) 1026{ 1027 struct adt7475_data *data = adt7475_update_device(dev); 1028 1029 if (IS_ERR(data)) 1030 return PTR_ERR(data); 1031 1032 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY)); 1033} 1034 1035static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev, 1036 struct device_attribute *devattr, 1037 const char *buf, size_t count) 1038{ 1039 struct adt7475_data *data = dev_get_drvdata(dev); 1040 struct i2c_client *client = data->client; 1041 long val; 1042 1043 if (kstrtol(buf, 10, &val)) 1044 return -EINVAL; 1045 if (val != 0 && val != 1) 1046 return -EINVAL; 1047 1048 mutex_lock(&data->lock); 1049 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4); 1050 if (val) 1051 data->config4 |= CONFIG4_MAXDUTY; 1052 else 1053 data->config4 &= ~CONFIG4_MAXDUTY; 1054 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4); 1055 mutex_unlock(&data->lock); 1056 1057 return count; 1058} 1059 1060static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr, 1061 char *buf) 1062{ 1063 struct adt7475_data *data = dev_get_drvdata(dev); 1064 return sprintf(buf, "%d\n", (int)data->vrm); 1065} 1066 1067static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr, 1068 const char *buf, size_t count) 1069{ 1070 struct adt7475_data *data = dev_get_drvdata(dev); 1071 long val; 1072 1073 if (kstrtol(buf, 10, &val)) 1074 return -EINVAL; 1075 if (val < 0 || val > 255) 1076 return -EINVAL; 1077 data->vrm = val; 1078 1079 return count; 1080} 1081 1082static ssize_t cpu0_vid_show(struct device *dev, 1083 struct device_attribute *devattr, char *buf) 1084{ 1085 struct adt7475_data *data = adt7475_update_device(dev); 1086 1087 if (IS_ERR(data)) 1088 return PTR_ERR(data); 1089 1090 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 1091} 1092 1093static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0); 1094static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0); 1095static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0); 1096static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0); 1097static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1); 1098static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1); 1099static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1); 1100static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1); 1101static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2); 1102static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2); 1103static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2); 1104static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2); 1105static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3); 1106static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3); 1107static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3); 1108static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3); 1109static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4); 1110static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4); 1111static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4); 1112static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8); 1113static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5); 1114static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5); 1115static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5); 1116static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31); 1117static SENSOR_DEVICE_ATTR_2_RO(in6_input, voltage, INPUT, 6); 1118static SENSOR_DEVICE_ATTR_2_RW(in6_max, voltage, MAX, 6); 1119static SENSOR_DEVICE_ATTR_2_RW(in6_min, voltage, MIN, 6); 1120static SENSOR_DEVICE_ATTR_2_RO(in6_alarm, voltage, ALARM, 30); 1121static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0); 1122static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0); 1123static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0); 1124static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0); 1125static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0); 1126static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0); 1127static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0); 1128static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0); 1129static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0); 1130static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0); 1131static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0); 1132static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1); 1133static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1); 1134static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1); 1135static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1); 1136static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1); 1137static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1); 1138static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1); 1139static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1); 1140static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1); 1141static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1); 1142static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2); 1143static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2); 1144static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2); 1145static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2); 1146static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2); 1147static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2); 1148static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2); 1149static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2); 1150static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2); 1151static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2); 1152static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2); 1153static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0); 1154static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0); 1155static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0); 1156static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1); 1157static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1); 1158static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1); 1159static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2); 1160static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2); 1161static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2); 1162static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3); 1163static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3); 1164static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3); 1165static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0); 1166static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0); 1167static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0); 1168static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0); 1169static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0); 1170static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0); 1171static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0); 1172static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1); 1173static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1); 1174static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1); 1175static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1); 1176static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1); 1177static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1); 1178static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1); 1179static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2); 1180static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2); 1181static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2); 1182static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2); 1183static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2); 1184static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2); 1185static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2); 1186 1187/* Non-standard name, might need revisiting */ 1188static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit); 1189 1190static DEVICE_ATTR_RW(vrm); 1191static DEVICE_ATTR_RO(cpu0_vid); 1192 1193static struct attribute *adt7475_attrs[] = { 1194 &sensor_dev_attr_in1_input.dev_attr.attr, 1195 &sensor_dev_attr_in1_max.dev_attr.attr, 1196 &sensor_dev_attr_in1_min.dev_attr.attr, 1197 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1198 &sensor_dev_attr_in2_input.dev_attr.attr, 1199 &sensor_dev_attr_in2_max.dev_attr.attr, 1200 &sensor_dev_attr_in2_min.dev_attr.attr, 1201 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1202 &sensor_dev_attr_temp1_input.dev_attr.attr, 1203 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1204 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1205 &sensor_dev_attr_temp1_max.dev_attr.attr, 1206 &sensor_dev_attr_temp1_min.dev_attr.attr, 1207 &sensor_dev_attr_temp1_offset.dev_attr.attr, 1208 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, 1209 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, 1210 &sensor_dev_attr_temp1_crit.dev_attr.attr, 1211 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, 1212 &sensor_dev_attr_temp1_smoothing.dev_attr.attr, 1213 &sensor_dev_attr_temp2_input.dev_attr.attr, 1214 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1215 &sensor_dev_attr_temp2_max.dev_attr.attr, 1216 &sensor_dev_attr_temp2_min.dev_attr.attr, 1217 &sensor_dev_attr_temp2_offset.dev_attr.attr, 1218 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, 1219 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, 1220 &sensor_dev_attr_temp2_crit.dev_attr.attr, 1221 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr, 1222 &sensor_dev_attr_temp2_smoothing.dev_attr.attr, 1223 &sensor_dev_attr_temp3_input.dev_attr.attr, 1224 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1225 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1226 &sensor_dev_attr_temp3_max.dev_attr.attr, 1227 &sensor_dev_attr_temp3_min.dev_attr.attr, 1228 &sensor_dev_attr_temp3_offset.dev_attr.attr, 1229 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr, 1230 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr, 1231 &sensor_dev_attr_temp3_crit.dev_attr.attr, 1232 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr, 1233 &sensor_dev_attr_temp3_smoothing.dev_attr.attr, 1234 &sensor_dev_attr_fan1_input.dev_attr.attr, 1235 &sensor_dev_attr_fan1_min.dev_attr.attr, 1236 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1237 &sensor_dev_attr_fan2_input.dev_attr.attr, 1238 &sensor_dev_attr_fan2_min.dev_attr.attr, 1239 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1240 &sensor_dev_attr_fan3_input.dev_attr.attr, 1241 &sensor_dev_attr_fan3_min.dev_attr.attr, 1242 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1243 &sensor_dev_attr_pwm1.dev_attr.attr, 1244 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 1245 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1246 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1247 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1248 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1249 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr, 1250 &sensor_dev_attr_pwm3.dev_attr.attr, 1251 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1252 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1253 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1254 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1255 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1256 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr, 1257 &dev_attr_pwm_use_point2_pwm_at_crit.attr, 1258 NULL, 1259}; 1260 1261static struct attribute *fan4_attrs[] = { 1262 &sensor_dev_attr_fan4_input.dev_attr.attr, 1263 &sensor_dev_attr_fan4_min.dev_attr.attr, 1264 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1265 NULL 1266}; 1267 1268static struct attribute *pwm2_attrs[] = { 1269 &sensor_dev_attr_pwm2.dev_attr.attr, 1270 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1271 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1272 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1273 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1274 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1275 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr, 1276 NULL 1277}; 1278 1279static struct attribute *in0_attrs[] = { 1280 &sensor_dev_attr_in0_input.dev_attr.attr, 1281 &sensor_dev_attr_in0_max.dev_attr.attr, 1282 &sensor_dev_attr_in0_min.dev_attr.attr, 1283 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1284 NULL 1285}; 1286 1287static struct attribute *in3_attrs[] = { 1288 &sensor_dev_attr_in3_input.dev_attr.attr, 1289 &sensor_dev_attr_in3_max.dev_attr.attr, 1290 &sensor_dev_attr_in3_min.dev_attr.attr, 1291 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1292 NULL 1293}; 1294 1295static struct attribute *in4_attrs[] = { 1296 &sensor_dev_attr_in4_input.dev_attr.attr, 1297 &sensor_dev_attr_in4_max.dev_attr.attr, 1298 &sensor_dev_attr_in4_min.dev_attr.attr, 1299 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1300 NULL 1301}; 1302 1303static struct attribute *in5_attrs[] = { 1304 &sensor_dev_attr_in5_input.dev_attr.attr, 1305 &sensor_dev_attr_in5_max.dev_attr.attr, 1306 &sensor_dev_attr_in5_min.dev_attr.attr, 1307 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1308 NULL 1309}; 1310 1311static struct attribute *in6_attrs[] = { 1312 &sensor_dev_attr_in6_input.dev_attr.attr, 1313 &sensor_dev_attr_in6_max.dev_attr.attr, 1314 &sensor_dev_attr_in6_min.dev_attr.attr, 1315 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1316 NULL 1317}; 1318 1319static struct attribute *vid_attrs[] = { 1320 &dev_attr_cpu0_vid.attr, 1321 &dev_attr_vrm.attr, 1322 NULL 1323}; 1324 1325static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs }; 1326static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs }; 1327static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs }; 1328static const struct attribute_group in0_attr_group = { .attrs = in0_attrs }; 1329static const struct attribute_group in3_attr_group = { .attrs = in3_attrs }; 1330static const struct attribute_group in4_attr_group = { .attrs = in4_attrs }; 1331static const struct attribute_group in5_attr_group = { .attrs = in5_attrs }; 1332static const struct attribute_group in6_attr_group = { .attrs = in6_attrs }; 1333static const struct attribute_group vid_attr_group = { .attrs = vid_attrs }; 1334 1335static int adt7475_detect(struct i2c_client *client, 1336 struct i2c_board_info *info) 1337{ 1338 struct i2c_adapter *adapter = client->adapter; 1339 int vendid, devid, devid2; 1340 const char *name; 1341 1342 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1343 return -ENODEV; 1344 1345 vendid = adt7475_read(REG_VENDID); 1346 devid2 = adt7475_read(REG_DEVID2); 1347 if (vendid != 0x41 || /* Analog Devices */ 1348 (devid2 & 0xf8) != 0x68) 1349 return -ENODEV; 1350 1351 devid = adt7475_read(REG_DEVID); 1352 if (devid == 0x73) 1353 name = "adt7473"; 1354 else if (devid == 0x75 && client->addr == 0x2e) 1355 name = "adt7475"; 1356 else if (devid == 0x76) 1357 name = "adt7476"; 1358 else if ((devid2 & 0xfc) == 0x6c) 1359 name = "adt7490"; 1360 else { 1361 dev_dbg(&adapter->dev, 1362 "Couldn't detect an ADT7473/75/76/90 part at " 1363 "0x%02x\n", (unsigned int)client->addr); 1364 return -ENODEV; 1365 } 1366 1367 strscpy(info->type, name, I2C_NAME_SIZE); 1368 1369 return 0; 1370} 1371 1372static int adt7475_update_limits(struct i2c_client *client) 1373{ 1374 struct adt7475_data *data = i2c_get_clientdata(client); 1375 int i; 1376 int ret; 1377 1378 ret = adt7475_read(REG_CONFIG4); 1379 if (ret < 0) 1380 return ret; 1381 data->config4 = ret; 1382 1383 ret = adt7475_read(REG_CONFIG5); 1384 if (ret < 0) 1385 return ret; 1386 data->config5 = ret; 1387 1388 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1389 if (!(data->has_voltage & (1 << i))) 1390 continue; 1391 /* Adjust values so they match the input precision */ 1392 ret = adt7475_read(VOLTAGE_MIN_REG(i)); 1393 if (ret < 0) 1394 return ret; 1395 data->voltage[MIN][i] = ret << 2; 1396 1397 ret = adt7475_read(VOLTAGE_MAX_REG(i)); 1398 if (ret < 0) 1399 return ret; 1400 data->voltage[MAX][i] = ret << 2; 1401 } 1402 1403 if (data->has_voltage & (1 << 5)) { 1404 ret = adt7475_read(REG_VTT_MIN); 1405 if (ret < 0) 1406 return ret; 1407 data->voltage[MIN][5] = ret << 2; 1408 1409 ret = adt7475_read(REG_VTT_MAX); 1410 if (ret < 0) 1411 return ret; 1412 data->voltage[MAX][5] = ret << 2; 1413 } 1414 1415 if (data->has_voltage & (1 << 6)) { 1416 ret = adt7475_read(REG_IMON_MIN); 1417 if (ret < 0) 1418 return ret; 1419 data->voltage[MIN][6] = ret << 2; 1420 1421 ret = adt7475_read(REG_IMON_MAX); 1422 if (ret < 0) 1423 return ret; 1424 data->voltage[MAX][6] = ret << 2; 1425 } 1426 1427 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 1428 /* Adjust values so they match the input precision */ 1429 ret = adt7475_read(TEMP_MIN_REG(i)); 1430 if (ret < 0) 1431 return ret; 1432 data->temp[MIN][i] = ret << 2; 1433 1434 ret = adt7475_read(TEMP_MAX_REG(i)); 1435 if (ret < 0) 1436 return ret; 1437 data->temp[MAX][i] = ret << 2; 1438 1439 ret = adt7475_read(TEMP_TMIN_REG(i)); 1440 if (ret < 0) 1441 return ret; 1442 data->temp[AUTOMIN][i] = ret << 2; 1443 1444 ret = adt7475_read(TEMP_THERM_REG(i)); 1445 if (ret < 0) 1446 return ret; 1447 data->temp[THERM][i] = ret << 2; 1448 1449 ret = adt7475_read(TEMP_OFFSET_REG(i)); 1450 if (ret < 0) 1451 return ret; 1452 data->temp[OFFSET][i] = ret; 1453 } 1454 adt7475_read_hystersis(client); 1455 1456 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 1457 if (i == 3 && !data->has_fan4) 1458 continue; 1459 ret = adt7475_read_word(client, TACH_MIN_REG(i)); 1460 if (ret < 0) 1461 return ret; 1462 data->tach[MIN][i] = ret; 1463 } 1464 1465 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1466 if (i == 1 && !data->has_pwm2) 1467 continue; 1468 ret = adt7475_read(PWM_MAX_REG(i)); 1469 if (ret < 0) 1470 return ret; 1471 data->pwm[MAX][i] = ret; 1472 1473 ret = adt7475_read(PWM_MIN_REG(i)); 1474 if (ret < 0) 1475 return ret; 1476 data->pwm[MIN][i] = ret; 1477 /* Set the channel and control information */ 1478 adt7475_read_pwm(client, i); 1479 } 1480 1481 ret = adt7475_read(TEMP_TRANGE_REG(0)); 1482 if (ret < 0) 1483 return ret; 1484 data->range[0] = ret; 1485 1486 ret = adt7475_read(TEMP_TRANGE_REG(1)); 1487 if (ret < 0) 1488 return ret; 1489 data->range[1] = ret; 1490 1491 ret = adt7475_read(TEMP_TRANGE_REG(2)); 1492 if (ret < 0) 1493 return ret; 1494 data->range[2] = ret; 1495 1496 return 0; 1497} 1498 1499static int load_config3(const struct i2c_client *client, const char *propname) 1500{ 1501 const char *function; 1502 u8 config3; 1503 int ret; 1504 1505 ret = device_property_read_string(&client->dev, propname, &function); 1506 if (!ret) { 1507 ret = adt7475_read(REG_CONFIG3); 1508 if (ret < 0) 1509 return ret; 1510 1511 config3 = ret & ~CONFIG3_SMBALERT; 1512 if (!strcmp("pwm2", function)) 1513 ; 1514 else if (!strcmp("smbalert#", function)) 1515 config3 |= CONFIG3_SMBALERT; 1516 else 1517 return -EINVAL; 1518 1519 return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3); 1520 } 1521 1522 return 0; 1523} 1524 1525static int load_config4(const struct i2c_client *client, const char *propname) 1526{ 1527 const char *function; 1528 u8 config4; 1529 int ret; 1530 1531 ret = device_property_read_string(&client->dev, propname, &function); 1532 if (!ret) { 1533 ret = adt7475_read(REG_CONFIG4); 1534 if (ret < 0) 1535 return ret; 1536 1537 config4 = ret & ~CONFIG4_PINFUNC; 1538 1539 if (!strcmp("tach4", function)) 1540 ; 1541 else if (!strcmp("therm#", function)) 1542 config4 |= CONFIG4_THERM; 1543 else if (!strcmp("smbalert#", function)) 1544 config4 |= CONFIG4_SMBALERT; 1545 else if (!strcmp("gpio", function)) 1546 config4 |= CONFIG4_PINFUNC; 1547 else 1548 return -EINVAL; 1549 1550 return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4); 1551 } 1552 1553 return 0; 1554} 1555 1556static int load_config(const struct i2c_client *client, enum chips chip) 1557{ 1558 int err; 1559 const char *prop1, *prop2; 1560 1561 switch (chip) { 1562 case adt7473: 1563 case adt7475: 1564 prop1 = "adi,pin5-function"; 1565 prop2 = "adi,pin9-function"; 1566 break; 1567 case adt7476: 1568 case adt7490: 1569 prop1 = "adi,pin10-function"; 1570 prop2 = "adi,pin14-function"; 1571 break; 1572 } 1573 1574 err = load_config3(client, prop1); 1575 if (err) { 1576 dev_err(&client->dev, "failed to configure %s\n", prop1); 1577 return err; 1578 } 1579 1580 err = load_config4(client, prop2); 1581 if (err) { 1582 dev_err(&client->dev, "failed to configure %s\n", prop2); 1583 return err; 1584 } 1585 1586 return 0; 1587} 1588 1589static int set_property_bit(const struct i2c_client *client, char *property, 1590 u8 *config, u8 bit_index) 1591{ 1592 u32 prop_value = 0; 1593 int ret = device_property_read_u32(&client->dev, property, 1594 &prop_value); 1595 1596 if (!ret) { 1597 if (prop_value) 1598 *config |= (1 << bit_index); 1599 else 1600 *config &= ~(1 << bit_index); 1601 } 1602 1603 return ret; 1604} 1605 1606static int load_attenuators(const struct i2c_client *client, enum chips chip, 1607 struct adt7475_data *data) 1608{ 1609 switch (chip) { 1610 case adt7476: 1611 case adt7490: 1612 set_property_bit(client, "adi,bypass-attenuator-in0", 1613 &data->config4, 4); 1614 set_property_bit(client, "adi,bypass-attenuator-in1", 1615 &data->config4, 5); 1616 set_property_bit(client, "adi,bypass-attenuator-in3", 1617 &data->config4, 6); 1618 set_property_bit(client, "adi,bypass-attenuator-in4", 1619 &data->config4, 7); 1620 1621 return i2c_smbus_write_byte_data(client, REG_CONFIG4, 1622 data->config4); 1623 case adt7473: 1624 case adt7475: 1625 set_property_bit(client, "adi,bypass-attenuator-in1", 1626 &data->config2, 5); 1627 1628 return i2c_smbus_write_byte_data(client, REG_CONFIG2, 1629 data->config2); 1630 } 1631 1632 return 0; 1633} 1634 1635static int adt7475_set_pwm_polarity(struct i2c_client *client) 1636{ 1637 u32 states[ADT7475_PWM_COUNT]; 1638 int ret, i; 1639 u8 val; 1640 1641 ret = device_property_read_u32_array(&client->dev, 1642 "adi,pwm-active-state", states, 1643 ARRAY_SIZE(states)); 1644 if (ret) 1645 return ret; 1646 1647 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1648 ret = adt7475_read(PWM_CONFIG_REG(i)); 1649 if (ret < 0) 1650 return ret; 1651 val = ret; 1652 if (states[i]) 1653 val &= ~BIT(4); 1654 else 1655 val |= BIT(4); 1656 1657 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val); 1658 if (ret) 1659 return ret; 1660 } 1661 1662 return 0; 1663} 1664 1665static int adt7475_probe(struct i2c_client *client) 1666{ 1667 enum chips chip; 1668 static const char * const names[] = { 1669 [adt7473] = "ADT7473", 1670 [adt7475] = "ADT7475", 1671 [adt7476] = "ADT7476", 1672 [adt7490] = "ADT7490", 1673 }; 1674 1675 struct adt7475_data *data; 1676 struct device *hwmon_dev; 1677 int i, ret = 0, revision, group_num = 0; 1678 u8 config3; 1679 const struct i2c_device_id *id = i2c_match_id(adt7475_id, client); 1680 1681 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); 1682 if (data == NULL) 1683 return -ENOMEM; 1684 1685 mutex_init(&data->lock); 1686 data->client = client; 1687 i2c_set_clientdata(client, data); 1688 1689 if (client->dev.of_node) 1690 chip = (uintptr_t)of_device_get_match_data(&client->dev); 1691 else 1692 chip = id->driver_data; 1693 1694 /* Initialize device-specific values */ 1695 switch (chip) { 1696 case adt7476: 1697 data->has_voltage = 0x0e; /* in1 to in3 */ 1698 revision = adt7475_read(REG_DEVID2) & 0x07; 1699 break; 1700 case adt7490: 1701 data->has_voltage = 0x7e; /* in1 to in6 */ 1702 revision = adt7475_read(REG_DEVID2) & 0x03; 1703 if (revision == 0x03) 1704 revision += adt7475_read(REG_DEVREV2); 1705 break; 1706 default: 1707 data->has_voltage = 0x06; /* in1, in2 */ 1708 revision = adt7475_read(REG_DEVID2) & 0x07; 1709 } 1710 1711 ret = load_config(client, chip); 1712 if (ret) 1713 return ret; 1714 1715 config3 = adt7475_read(REG_CONFIG3); 1716 /* Pin PWM2 may alternatively be used for ALERT output */ 1717 if (!(config3 & CONFIG3_SMBALERT)) 1718 data->has_pwm2 = 1; 1719 /* Meaning of this bit is inverted for the ADT7473-1 */ 1720 if (id->driver_data == adt7473 && revision >= 1) 1721 data->has_pwm2 = !data->has_pwm2; 1722 1723 data->config4 = adt7475_read(REG_CONFIG4); 1724 /* Pin TACH4 may alternatively be used for THERM */ 1725 if ((data->config4 & CONFIG4_PINFUNC) == 0x0) 1726 data->has_fan4 = 1; 1727 1728 /* 1729 * THERM configuration is more complex on the ADT7476 and ADT7490, 1730 * because 2 different pins (TACH4 and +2.5 Vin) can be used for 1731 * this function 1732 */ 1733 if (id->driver_data == adt7490) { 1734 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 && 1735 !(config3 & CONFIG3_THERM)) 1736 data->has_fan4 = 1; 1737 } 1738 if (id->driver_data == adt7476 || id->driver_data == adt7490) { 1739 if (!(config3 & CONFIG3_THERM) || 1740 (data->config4 & CONFIG4_PINFUNC) == 0x1) 1741 data->has_voltage |= (1 << 0); /* in0 */ 1742 } 1743 1744 /* 1745 * On the ADT7476, the +12V input pin may instead be used as VID5, 1746 * and VID pins may alternatively be used as GPIO 1747 */ 1748 if (id->driver_data == adt7476) { 1749 u8 vid = adt7475_read(REG_VID); 1750 if (!(vid & VID_VIDSEL)) 1751 data->has_voltage |= (1 << 4); /* in4 */ 1752 1753 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO); 1754 } 1755 1756 /* Voltage attenuators can be bypassed, globally or individually */ 1757 data->config2 = adt7475_read(REG_CONFIG2); 1758 ret = load_attenuators(client, chip, data); 1759 if (ret) 1760 dev_warn(&client->dev, "Error configuring attenuator bypass\n"); 1761 1762 if (data->config2 & CONFIG2_ATTN) { 1763 data->bypass_attn = (0x3 << 3) | 0x3; 1764 } else { 1765 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) | 1766 ((data->config4 & CONFIG4_ATTN_IN43) >> 3); 1767 } 1768 data->bypass_attn &= data->has_voltage; 1769 1770 /* 1771 * Call adt7475_read_pwm for all pwm's as this will reprogram any 1772 * pwm's which are disabled to manual mode with 0% duty cycle 1773 */ 1774 for (i = 0; i < ADT7475_PWM_COUNT; i++) 1775 adt7475_read_pwm(client, i); 1776 1777 ret = adt7475_set_pwm_polarity(client); 1778 if (ret && ret != -EINVAL) 1779 dev_warn(&client->dev, "Error configuring pwm polarity\n"); 1780 1781 /* Start monitoring */ 1782 switch (chip) { 1783 case adt7475: 1784 case adt7476: 1785 i2c_smbus_write_byte_data(client, REG_CONFIG1, 1786 adt7475_read(REG_CONFIG1) | 0x01); 1787 break; 1788 default: 1789 break; 1790 } 1791 1792 data->groups[group_num++] = &adt7475_attr_group; 1793 1794 /* Features that can be disabled individually */ 1795 if (data->has_fan4) { 1796 data->groups[group_num++] = &fan4_attr_group; 1797 } 1798 if (data->has_pwm2) { 1799 data->groups[group_num++] = &pwm2_attr_group; 1800 } 1801 if (data->has_voltage & (1 << 0)) { 1802 data->groups[group_num++] = &in0_attr_group; 1803 } 1804 if (data->has_voltage & (1 << 3)) { 1805 data->groups[group_num++] = &in3_attr_group; 1806 } 1807 if (data->has_voltage & (1 << 4)) { 1808 data->groups[group_num++] = &in4_attr_group; 1809 } 1810 if (data->has_voltage & (1 << 5)) { 1811 data->groups[group_num++] = &in5_attr_group; 1812 } 1813 if (data->has_voltage & (1 << 6)) { 1814 data->groups[group_num++] = &in6_attr_group; 1815 } 1816 if (data->has_vid) { 1817 data->vrm = vid_which_vrm(); 1818 data->groups[group_num] = &vid_attr_group; 1819 } 1820 1821 /* register device with all the acquired attributes */ 1822 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev, 1823 client->name, data, 1824 data->groups); 1825 1826 if (IS_ERR(hwmon_dev)) { 1827 ret = PTR_ERR(hwmon_dev); 1828 return ret; 1829 } 1830 1831 dev_info(&client->dev, "%s device, revision %d\n", 1832 names[id->driver_data], revision); 1833 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2) 1834 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n", 1835 (data->has_voltage & (1 << 0)) ? " in0" : "", 1836 (data->has_voltage & (1 << 4)) ? " in4" : "", 1837 data->has_fan4 ? " fan4" : "", 1838 data->has_pwm2 ? " pwm2" : "", 1839 data->has_vid ? " vid" : ""); 1840 if (data->bypass_attn) 1841 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n", 1842 (data->bypass_attn & (1 << 0)) ? " in0" : "", 1843 (data->bypass_attn & (1 << 1)) ? " in1" : "", 1844 (data->bypass_attn & (1 << 3)) ? " in3" : "", 1845 (data->bypass_attn & (1 << 4)) ? " in4" : ""); 1846 1847 /* Limits and settings, should never change update more than once */ 1848 ret = adt7475_update_limits(client); 1849 if (ret) 1850 return ret; 1851 1852 return 0; 1853} 1854 1855static struct i2c_driver adt7475_driver = { 1856 .class = I2C_CLASS_HWMON, 1857 .driver = { 1858 .name = "adt7475", 1859 .of_match_table = of_match_ptr(adt7475_of_match), 1860 }, 1861 .probe = adt7475_probe, 1862 .id_table = adt7475_id, 1863 .detect = adt7475_detect, 1864 .address_list = normal_i2c, 1865}; 1866 1867static void adt7475_read_hystersis(struct i2c_client *client) 1868{ 1869 struct adt7475_data *data = i2c_get_clientdata(client); 1870 1871 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS); 1872 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0]; 1873 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS); 1874} 1875 1876static void adt7475_read_pwm(struct i2c_client *client, int index) 1877{ 1878 struct adt7475_data *data = i2c_get_clientdata(client); 1879 unsigned int v; 1880 1881 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index)); 1882 1883 /* 1884 * Figure out the internal value for pwmctrl and pwmchan 1885 * based on the current settings 1886 */ 1887 v = (data->pwm[CONTROL][index] >> 5) & 7; 1888 1889 if (v == 3) 1890 data->pwmctl[index] = 0; 1891 else if (v == 7) 1892 data->pwmctl[index] = 1; 1893 else if (v == 4) { 1894 /* 1895 * The fan is disabled - we don't want to 1896 * support that, so change to manual mode and 1897 * set the duty cycle to 0 instead 1898 */ 1899 data->pwm[INPUT][index] = 0; 1900 data->pwm[CONTROL][index] &= ~0xE0; 1901 data->pwm[CONTROL][index] |= (7 << 5); 1902 1903 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 1904 data->pwm[INPUT][index]); 1905 1906 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 1907 data->pwm[CONTROL][index]); 1908 1909 data->pwmctl[index] = 1; 1910 } else { 1911 data->pwmctl[index] = 2; 1912 1913 switch (v) { 1914 case 0: 1915 data->pwmchan[index] = 1; 1916 break; 1917 case 1: 1918 data->pwmchan[index] = 2; 1919 break; 1920 case 2: 1921 data->pwmchan[index] = 4; 1922 break; 1923 case 5: 1924 data->pwmchan[index] = 6; 1925 break; 1926 case 6: 1927 data->pwmchan[index] = 7; 1928 break; 1929 } 1930 } 1931} 1932 1933static int adt7475_update_measure(struct device *dev) 1934{ 1935 struct adt7475_data *data = dev_get_drvdata(dev); 1936 struct i2c_client *client = data->client; 1937 u16 ext; 1938 int i; 1939 int ret; 1940 1941 ret = adt7475_read(REG_STATUS2); 1942 if (ret < 0) 1943 return ret; 1944 data->alarms = ret << 8; 1945 1946 ret = adt7475_read(REG_STATUS1); 1947 if (ret < 0) 1948 return ret; 1949 data->alarms |= ret; 1950 1951 ret = adt7475_read(REG_EXTEND2); 1952 if (ret < 0) 1953 return ret; 1954 1955 ext = (ret << 8); 1956 1957 ret = adt7475_read(REG_EXTEND1); 1958 if (ret < 0) 1959 return ret; 1960 1961 ext |= ret; 1962 1963 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1964 if (!(data->has_voltage & (1 << i))) 1965 continue; 1966 ret = adt7475_read(VOLTAGE_REG(i)); 1967 if (ret < 0) 1968 return ret; 1969 data->voltage[INPUT][i] = 1970 (ret << 2) | 1971 ((ext >> (i * 2)) & 3); 1972 } 1973 1974 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 1975 ret = adt7475_read(TEMP_REG(i)); 1976 if (ret < 0) 1977 return ret; 1978 data->temp[INPUT][i] = 1979 (ret << 2) | 1980 ((ext >> ((i + 5) * 2)) & 3); 1981 } 1982 1983 if (data->has_voltage & (1 << 5)) { 1984 ret = adt7475_read(REG_STATUS4); 1985 if (ret < 0) 1986 return ret; 1987 data->alarms |= ret << 24; 1988 1989 ret = adt7475_read(REG_EXTEND3); 1990 if (ret < 0) 1991 return ret; 1992 ext = ret; 1993 1994 ret = adt7475_read(REG_VTT); 1995 if (ret < 0) 1996 return ret; 1997 data->voltage[INPUT][5] = ret << 2 | 1998 ((ext >> 4) & 3); 1999 } 2000 2001 if (data->has_voltage & (1 << 6)) { 2002 ret = adt7475_read(REG_STATUS4); 2003 if (ret < 0) 2004 return ret; 2005 data->alarms |= ret << 24; 2006 2007 ret = adt7475_read(REG_EXTEND3); 2008 if (ret < 0) 2009 return ret; 2010 ext = ret; 2011 2012 ret = adt7475_read(REG_IMON); 2013 if (ret < 0) 2014 return ret; 2015 data->voltage[INPUT][6] = ret << 2 | 2016 ((ext >> 6) & 3); 2017 } 2018 2019 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 2020 if (i == 3 && !data->has_fan4) 2021 continue; 2022 ret = adt7475_read_word(client, TACH_REG(i)); 2023 if (ret < 0) 2024 return ret; 2025 data->tach[INPUT][i] = ret; 2026 } 2027 2028 /* Updated by hw when in auto mode */ 2029 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 2030 if (i == 1 && !data->has_pwm2) 2031 continue; 2032 ret = adt7475_read(PWM_REG(i)); 2033 if (ret < 0) 2034 return ret; 2035 data->pwm[INPUT][i] = ret; 2036 } 2037 2038 if (data->has_vid) { 2039 ret = adt7475_read(REG_VID); 2040 if (ret < 0) 2041 return ret; 2042 data->vid = ret & 0x3f; 2043 } 2044 2045 return 0; 2046} 2047 2048static struct adt7475_data *adt7475_update_device(struct device *dev) 2049{ 2050 struct adt7475_data *data = dev_get_drvdata(dev); 2051 int ret; 2052 2053 mutex_lock(&data->lock); 2054 2055 /* Measurement values update every 2 seconds */ 2056 if (time_after(jiffies, data->measure_updated + HZ * 2) || 2057 !data->valid) { 2058 ret = adt7475_update_measure(dev); 2059 if (ret) { 2060 data->valid = false; 2061 mutex_unlock(&data->lock); 2062 return ERR_PTR(ret); 2063 } 2064 data->measure_updated = jiffies; 2065 data->valid = true; 2066 } 2067 2068 mutex_unlock(&data->lock); 2069 2070 return data; 2071} 2072 2073module_i2c_driver(adt7475_driver); 2074 2075MODULE_AUTHOR("Advanced Micro Devices, Inc"); 2076MODULE_DESCRIPTION("adt7475 driver"); 2077MODULE_LICENSE("GPL"); 2078