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 #include <dt-bindings/pwm/pwm.h> 25 26 /* Indexes for the sysfs hooks */ 27 28 #define INPUT 0 29 #define MIN 1 30 #define MAX 2 31 #define CONTROL 3 32 #define OFFSET 3 33 #define AUTOMIN 4 34 #define THERM 5 35 #define HYSTERSIS 6 36 37 /* 38 * These are unique identifiers for the sysfs functions - unlike the 39 * numbers above, these are not also indexes into an array 40 */ 41 42 #define ALARM 9 43 #define FAULT 10 44 45 /* 7475 Common Registers */ 46 47 #define REG_DEVREV2 0x12 /* ADT7490 only */ 48 #define REG_IMON 0x1D /* ADT7490 only */ 49 50 #define REG_VTT 0x1E /* ADT7490 only */ 51 #define REG_EXTEND3 0x1F /* ADT7490 only */ 52 53 #define REG_VOLTAGE_BASE 0x20 54 #define REG_TEMP_BASE 0x25 55 #define REG_TACH_BASE 0x28 56 #define REG_PWM_BASE 0x30 57 #define REG_PWM_MAX_BASE 0x38 58 59 #define REG_DEVID 0x3D 60 #define REG_VENDID 0x3E 61 #define REG_DEVID2 0x3F 62 63 #define REG_CONFIG1 0x40 64 65 #define REG_STATUS1 0x41 66 #define REG_STATUS2 0x42 67 68 #define REG_VID 0x43 /* ADT7476 only */ 69 70 #define REG_VOLTAGE_MIN_BASE 0x44 71 #define REG_VOLTAGE_MAX_BASE 0x45 72 73 #define REG_TEMP_MIN_BASE 0x4E 74 #define REG_TEMP_MAX_BASE 0x4F 75 76 #define REG_TACH_MIN_BASE 0x54 77 78 #define REG_PWM_CONFIG_BASE 0x5C 79 80 #define REG_TEMP_TRANGE_BASE 0x5F 81 82 #define REG_ENHANCE_ACOUSTICS1 0x62 83 #define REG_ENHANCE_ACOUSTICS2 0x63 84 85 #define REG_PWM_MIN_BASE 0x64 86 87 #define REG_TEMP_TMIN_BASE 0x67 88 #define REG_TEMP_THERM_BASE 0x6A 89 90 #define REG_REMOTE1_HYSTERSIS 0x6D 91 #define REG_REMOTE2_HYSTERSIS 0x6E 92 93 #define REG_TEMP_OFFSET_BASE 0x70 94 95 #define REG_CONFIG2 0x73 96 97 #define REG_EXTEND1 0x76 98 #define REG_EXTEND2 0x77 99 100 #define REG_CONFIG3 0x78 101 #define REG_CONFIG5 0x7C 102 #define REG_CONFIG4 0x7D 103 104 #define REG_STATUS4 0x81 /* ADT7490 only */ 105 106 #define REG_VTT_MIN 0x84 /* ADT7490 only */ 107 #define REG_VTT_MAX 0x86 /* ADT7490 only */ 108 109 #define REG_IMON_MIN 0x85 /* ADT7490 only */ 110 #define REG_IMON_MAX 0x87 /* ADT7490 only */ 111 112 #define VID_VIDSEL 0x80 /* ADT7476 only */ 113 114 #define CONFIG2_ATTN 0x20 115 116 #define CONFIG3_SMBALERT 0x01 117 #define CONFIG3_THERM 0x02 118 119 #define CONFIG4_PINFUNC 0x03 120 #define CONFIG4_THERM 0x01 121 #define CONFIG4_SMBALERT 0x02 122 #define CONFIG4_MAXDUTY 0x08 123 #define CONFIG4_ATTN_IN10 0x30 124 #define CONFIG4_ATTN_IN43 0xC0 125 126 #define CONFIG5_TWOSCOMP 0x01 127 #define CONFIG5_TEMPOFFSET 0x02 128 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */ 129 130 /* ADT7475 Settings */ 131 132 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt or Imon */ 133 #define ADT7475_TEMP_COUNT 3 134 #define ADT7475_TACH_COUNT 4 135 #define ADT7475_PWM_COUNT 3 136 137 /* Macro to read the registers */ 138 139 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg)) 140 141 /* Macros to easily index the registers */ 142 143 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2)) 144 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2)) 145 146 #define PWM_REG(idx) (REG_PWM_BASE + (idx)) 147 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx)) 148 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx)) 149 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx)) 150 151 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx)) 152 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2)) 153 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2)) 154 155 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx)) 156 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2)) 157 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2)) 158 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx)) 159 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx)) 160 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx)) 161 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx)) 162 163 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 164 165 enum chips { adt7473, adt7475, adt7476, adt7490 }; 166 167 static const struct i2c_device_id adt7475_id[] = { 168 { "adt7473", adt7473 }, 169 { "adt7475", adt7475 }, 170 { "adt7476", adt7476 }, 171 { "adt7490", adt7490 }, 172 { } 173 }; 174 MODULE_DEVICE_TABLE(i2c, adt7475_id); 175 176 static const struct of_device_id __maybe_unused adt7475_of_match[] = { 177 { 178 .compatible = "adi,adt7473", 179 .data = (void *)adt7473 180 }, 181 { 182 .compatible = "adi,adt7475", 183 .data = (void *)adt7475 184 }, 185 { 186 .compatible = "adi,adt7476", 187 .data = (void *)adt7476 188 }, 189 { 190 .compatible = "adi,adt7490", 191 .data = (void *)adt7490 192 }, 193 { }, 194 }; 195 MODULE_DEVICE_TABLE(of, adt7475_of_match); 196 197 struct adt7475_data { 198 struct i2c_client *client; 199 struct mutex lock; 200 201 unsigned long measure_updated; 202 bool valid; 203 204 u8 config2; 205 u8 config4; 206 u8 config5; 207 u8 has_voltage; 208 u8 bypass_attn; /* Bypass voltage attenuator */ 209 u8 has_pwm2:1; 210 u8 has_fan4:1; 211 u8 has_vid:1; 212 u32 alarms; 213 u16 voltage[3][7]; 214 u16 temp[7][3]; 215 u16 tach[2][4]; 216 u8 pwm[4][3]; 217 u8 range[3]; 218 u8 pwmctl[3]; 219 u8 pwmchan[3]; 220 u8 enh_acoustics[2]; 221 222 u8 vid; 223 u8 vrm; 224 const struct attribute_group *groups[10]; 225 }; 226 227 static struct i2c_driver adt7475_driver; 228 static struct adt7475_data *adt7475_update_device(struct device *dev); 229 static void adt7475_read_hystersis(struct i2c_client *client); 230 static void adt7475_read_pwm(struct i2c_client *client, int index); 231 232 /* Given a temp value, convert it to register value */ 233 234 static inline u16 temp2reg(struct adt7475_data *data, long val) 235 { 236 u16 ret; 237 238 if (!(data->config5 & CONFIG5_TWOSCOMP)) { 239 val = clamp_val(val, -64000, 191000); 240 ret = (val + 64500) / 1000; 241 } else { 242 val = clamp_val(val, -128000, 127000); 243 if (val < -500) 244 ret = (256500 + val) / 1000; 245 else 246 ret = (val + 500) / 1000; 247 } 248 249 return ret << 2; 250 } 251 252 /* Given a register value, convert it to a real temp value */ 253 254 static inline int reg2temp(struct adt7475_data *data, u16 reg) 255 { 256 if (data->config5 & CONFIG5_TWOSCOMP) { 257 if (reg >= 512) 258 return (reg - 1024) * 250; 259 else 260 return reg * 250; 261 } else 262 return (reg - 256) * 250; 263 } 264 265 static inline int tach2rpm(u16 tach) 266 { 267 if (tach == 0 || tach == 0xFFFF) 268 return 0; 269 270 return (90000 * 60) / tach; 271 } 272 273 static inline u16 rpm2tach(unsigned long rpm) 274 { 275 if (rpm == 0) 276 return 0; 277 278 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF); 279 } 280 281 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */ 282 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 2][2] = { 283 { 45, 94 }, /* +2.5V */ 284 { 175, 525 }, /* Vccp */ 285 { 68, 71 }, /* Vcc */ 286 { 93, 47 }, /* +5V */ 287 { 120, 20 }, /* +12V */ 288 { 45, 45 }, /* Vtt */ 289 { 45, 45 }, /* Imon */ 290 }; 291 292 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn) 293 { 294 const int *r = adt7473_in_scaling[channel]; 295 296 if (bypass_attn & (1 << channel)) 297 return DIV_ROUND_CLOSEST(reg * 2250, 1024); 298 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024); 299 } 300 301 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn) 302 { 303 const int *r = adt7473_in_scaling[channel]; 304 long reg; 305 306 if (bypass_attn & (1 << channel)) 307 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250); 308 else 309 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024, 310 (r[0] + r[1]) * 2250); 311 return clamp_val(reg, 0, 1023) & (0xff << 2); 312 } 313 314 static int adt7475_read_word(struct i2c_client *client, int reg) 315 { 316 int val1, val2; 317 318 val1 = i2c_smbus_read_byte_data(client, reg); 319 if (val1 < 0) 320 return val1; 321 val2 = i2c_smbus_read_byte_data(client, reg + 1); 322 if (val2 < 0) 323 return val2; 324 325 return val1 | (val2 << 8); 326 } 327 328 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val) 329 { 330 i2c_smbus_write_byte_data(client, reg + 1, val >> 8); 331 i2c_smbus_write_byte_data(client, reg, val & 0xFF); 332 } 333 334 static ssize_t voltage_show(struct device *dev, struct device_attribute *attr, 335 char *buf) 336 { 337 struct adt7475_data *data = adt7475_update_device(dev); 338 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 339 unsigned short val; 340 341 if (IS_ERR(data)) 342 return PTR_ERR(data); 343 344 switch (sattr->nr) { 345 case ALARM: 346 return sprintf(buf, "%d\n", 347 (data->alarms >> sattr->index) & 1); 348 default: 349 val = data->voltage[sattr->nr][sattr->index]; 350 return sprintf(buf, "%d\n", 351 reg2volt(sattr->index, val, data->bypass_attn)); 352 } 353 } 354 355 static ssize_t voltage_store(struct device *dev, 356 struct device_attribute *attr, const char *buf, 357 size_t count) 358 { 359 360 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 361 struct adt7475_data *data = dev_get_drvdata(dev); 362 struct i2c_client *client = data->client; 363 unsigned char reg; 364 long val; 365 366 if (kstrtol(buf, 10, &val)) 367 return -EINVAL; 368 369 mutex_lock(&data->lock); 370 371 data->voltage[sattr->nr][sattr->index] = 372 volt2reg(sattr->index, val, data->bypass_attn); 373 374 if (sattr->index < ADT7475_VOLTAGE_COUNT) { 375 if (sattr->nr == MIN) 376 reg = VOLTAGE_MIN_REG(sattr->index); 377 else 378 reg = VOLTAGE_MAX_REG(sattr->index); 379 } else if (sattr->index == 5) { 380 if (sattr->nr == MIN) 381 reg = REG_VTT_MIN; 382 else 383 reg = REG_VTT_MAX; 384 } else { 385 if (sattr->nr == MIN) 386 reg = REG_IMON_MIN; 387 else 388 reg = REG_IMON_MAX; 389 } 390 391 i2c_smbus_write_byte_data(client, reg, 392 data->voltage[sattr->nr][sattr->index] >> 2); 393 mutex_unlock(&data->lock); 394 395 return count; 396 } 397 398 static ssize_t temp_show(struct device *dev, struct device_attribute *attr, 399 char *buf) 400 { 401 struct adt7475_data *data = adt7475_update_device(dev); 402 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 403 int out; 404 405 if (IS_ERR(data)) 406 return PTR_ERR(data); 407 408 switch (sattr->nr) { 409 case HYSTERSIS: 410 mutex_lock(&data->lock); 411 out = data->temp[sattr->nr][sattr->index]; 412 if (sattr->index != 1) 413 out = (out >> 4) & 0xF; 414 else 415 out = (out & 0xF); 416 /* 417 * Show the value as an absolute number tied to 418 * THERM 419 */ 420 out = reg2temp(data, data->temp[THERM][sattr->index]) - 421 out * 1000; 422 mutex_unlock(&data->lock); 423 break; 424 425 case OFFSET: 426 /* 427 * Offset is always 2's complement, regardless of the 428 * setting in CONFIG5 429 */ 430 mutex_lock(&data->lock); 431 out = (s8)data->temp[sattr->nr][sattr->index]; 432 if (data->config5 & CONFIG5_TEMPOFFSET) 433 out *= 1000; 434 else 435 out *= 500; 436 mutex_unlock(&data->lock); 437 break; 438 439 case ALARM: 440 out = (data->alarms >> (sattr->index + 4)) & 1; 441 break; 442 443 case FAULT: 444 /* Note - only for remote1 and remote2 */ 445 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000)); 446 break; 447 448 default: 449 /* All other temp values are in the configured format */ 450 out = reg2temp(data, data->temp[sattr->nr][sattr->index]); 451 } 452 453 return sprintf(buf, "%d\n", out); 454 } 455 456 static ssize_t temp_store(struct device *dev, struct device_attribute *attr, 457 const char *buf, size_t count) 458 { 459 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 460 struct adt7475_data *data = dev_get_drvdata(dev); 461 struct i2c_client *client = data->client; 462 unsigned char reg = 0; 463 u8 out; 464 int temp; 465 long val; 466 467 if (kstrtol(buf, 10, &val)) 468 return -EINVAL; 469 470 mutex_lock(&data->lock); 471 472 /* We need the config register in all cases for temp <-> reg conv. */ 473 data->config5 = adt7475_read(REG_CONFIG5); 474 475 switch (sattr->nr) { 476 case OFFSET: 477 if (data->config5 & CONFIG5_TEMPOFFSET) { 478 val = clamp_val(val, -63000, 127000); 479 out = data->temp[OFFSET][sattr->index] = val / 1000; 480 } else { 481 val = clamp_val(val, -63000, 64000); 482 out = data->temp[OFFSET][sattr->index] = val / 500; 483 } 484 break; 485 486 case HYSTERSIS: 487 /* 488 * The value will be given as an absolute value, turn it 489 * into an offset based on THERM 490 */ 491 492 /* Read fresh THERM and HYSTERSIS values from the chip */ 493 data->temp[THERM][sattr->index] = 494 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2; 495 adt7475_read_hystersis(client); 496 497 temp = reg2temp(data, data->temp[THERM][sattr->index]); 498 val = clamp_val(val, temp - 15000, temp); 499 val = (temp - val) / 1000; 500 501 if (sattr->index != 1) { 502 data->temp[HYSTERSIS][sattr->index] &= 0x0F; 503 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4; 504 } else { 505 data->temp[HYSTERSIS][sattr->index] &= 0xF0; 506 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF); 507 } 508 509 out = data->temp[HYSTERSIS][sattr->index]; 510 break; 511 512 default: 513 data->temp[sattr->nr][sattr->index] = temp2reg(data, val); 514 515 /* 516 * We maintain an extra 2 digits of precision for simplicity 517 * - shift those back off before writing the value 518 */ 519 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2); 520 } 521 522 switch (sattr->nr) { 523 case MIN: 524 reg = TEMP_MIN_REG(sattr->index); 525 break; 526 case MAX: 527 reg = TEMP_MAX_REG(sattr->index); 528 break; 529 case OFFSET: 530 reg = TEMP_OFFSET_REG(sattr->index); 531 break; 532 case AUTOMIN: 533 reg = TEMP_TMIN_REG(sattr->index); 534 break; 535 case THERM: 536 reg = TEMP_THERM_REG(sattr->index); 537 break; 538 case HYSTERSIS: 539 if (sattr->index != 2) 540 reg = REG_REMOTE1_HYSTERSIS; 541 else 542 reg = REG_REMOTE2_HYSTERSIS; 543 544 break; 545 } 546 547 i2c_smbus_write_byte_data(client, reg, out); 548 549 mutex_unlock(&data->lock); 550 return count; 551 } 552 553 /* Assuming CONFIG6[SLOW] is 0 */ 554 static const int ad7475_st_map[] = { 555 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800, 556 }; 557 558 static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr, 559 char *buf) 560 { 561 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 562 struct adt7475_data *data = dev_get_drvdata(dev); 563 long val; 564 565 switch (sattr->index) { 566 case 0: 567 val = data->enh_acoustics[0] & 0xf; 568 break; 569 case 1: 570 val = data->enh_acoustics[1] & 0xf; 571 break; 572 case 2: 573 default: 574 val = (data->enh_acoustics[1] >> 4) & 0xf; 575 break; 576 } 577 578 if (val & 0x8) 579 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]); 580 else 581 return sprintf(buf, "0\n"); 582 } 583 584 static ssize_t temp_st_store(struct device *dev, 585 struct device_attribute *attr, const char *buf, 586 size_t count) 587 { 588 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 589 struct adt7475_data *data = dev_get_drvdata(dev); 590 struct i2c_client *client = data->client; 591 unsigned char reg; 592 int shift, idx; 593 ulong val; 594 595 if (kstrtoul(buf, 10, &val)) 596 return -EINVAL; 597 598 switch (sattr->index) { 599 case 0: 600 reg = REG_ENHANCE_ACOUSTICS1; 601 shift = 0; 602 idx = 0; 603 break; 604 case 1: 605 reg = REG_ENHANCE_ACOUSTICS2; 606 shift = 0; 607 idx = 1; 608 break; 609 case 2: 610 default: 611 reg = REG_ENHANCE_ACOUSTICS2; 612 shift = 4; 613 idx = 1; 614 break; 615 } 616 617 if (val > 0) { 618 val = find_closest_descending(val, ad7475_st_map, 619 ARRAY_SIZE(ad7475_st_map)); 620 val |= 0x8; 621 } 622 623 mutex_lock(&data->lock); 624 625 data->enh_acoustics[idx] &= ~(0xf << shift); 626 data->enh_acoustics[idx] |= (val << shift); 627 628 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]); 629 630 mutex_unlock(&data->lock); 631 632 return count; 633 } 634 635 /* 636 * Table of autorange values - the user will write the value in millidegrees, 637 * and we'll convert it 638 */ 639 static const int autorange_table[] = { 640 2000, 2500, 3330, 4000, 5000, 6670, 8000, 641 10000, 13330, 16000, 20000, 26670, 32000, 40000, 642 53330, 80000 643 }; 644 645 static ssize_t point2_show(struct device *dev, struct device_attribute *attr, 646 char *buf) 647 { 648 struct adt7475_data *data = adt7475_update_device(dev); 649 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 650 int out, val; 651 652 if (IS_ERR(data)) 653 return PTR_ERR(data); 654 655 mutex_lock(&data->lock); 656 out = (data->range[sattr->index] >> 4) & 0x0F; 657 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 658 mutex_unlock(&data->lock); 659 660 return sprintf(buf, "%d\n", val + autorange_table[out]); 661 } 662 663 static ssize_t point2_store(struct device *dev, struct device_attribute *attr, 664 const char *buf, size_t count) 665 { 666 struct adt7475_data *data = dev_get_drvdata(dev); 667 struct i2c_client *client = data->client; 668 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 669 int temp; 670 long val; 671 672 if (kstrtol(buf, 10, &val)) 673 return -EINVAL; 674 675 mutex_lock(&data->lock); 676 677 /* Get a fresh copy of the needed registers */ 678 data->config5 = adt7475_read(REG_CONFIG5); 679 data->temp[AUTOMIN][sattr->index] = 680 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2; 681 data->range[sattr->index] = 682 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 683 684 /* 685 * The user will write an absolute value, so subtract the start point 686 * to figure the range 687 */ 688 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 689 val = clamp_val(val, temp + autorange_table[0], 690 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]); 691 val -= temp; 692 693 /* Find the nearest table entry to what the user wrote */ 694 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table)); 695 696 data->range[sattr->index] &= ~0xF0; 697 data->range[sattr->index] |= val << 4; 698 699 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 700 data->range[sattr->index]); 701 702 mutex_unlock(&data->lock); 703 return count; 704 } 705 706 static ssize_t tach_show(struct device *dev, struct device_attribute *attr, 707 char *buf) 708 { 709 struct adt7475_data *data = adt7475_update_device(dev); 710 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 711 int out; 712 713 if (IS_ERR(data)) 714 return PTR_ERR(data); 715 716 if (sattr->nr == ALARM) 717 out = (data->alarms >> (sattr->index + 10)) & 1; 718 else 719 out = tach2rpm(data->tach[sattr->nr][sattr->index]); 720 721 return sprintf(buf, "%d\n", out); 722 } 723 724 static ssize_t tach_store(struct device *dev, struct device_attribute *attr, 725 const char *buf, size_t count) 726 { 727 728 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 729 struct adt7475_data *data = dev_get_drvdata(dev); 730 struct i2c_client *client = data->client; 731 unsigned long val; 732 733 if (kstrtoul(buf, 10, &val)) 734 return -EINVAL; 735 736 mutex_lock(&data->lock); 737 738 data->tach[MIN][sattr->index] = rpm2tach(val); 739 740 adt7475_write_word(client, TACH_MIN_REG(sattr->index), 741 data->tach[MIN][sattr->index]); 742 743 mutex_unlock(&data->lock); 744 return count; 745 } 746 747 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, 748 char *buf) 749 { 750 struct adt7475_data *data = adt7475_update_device(dev); 751 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 752 753 if (IS_ERR(data)) 754 return PTR_ERR(data); 755 756 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]); 757 } 758 759 static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr, 760 char *buf) 761 { 762 struct adt7475_data *data = adt7475_update_device(dev); 763 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 764 765 if (IS_ERR(data)) 766 return PTR_ERR(data); 767 768 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]); 769 } 770 771 static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr, 772 char *buf) 773 { 774 struct adt7475_data *data = adt7475_update_device(dev); 775 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 776 777 if (IS_ERR(data)) 778 return PTR_ERR(data); 779 780 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]); 781 } 782 783 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, 784 const char *buf, size_t count) 785 { 786 787 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 788 struct adt7475_data *data = dev_get_drvdata(dev); 789 struct i2c_client *client = data->client; 790 unsigned char reg = 0; 791 long val; 792 793 if (kstrtol(buf, 10, &val)) 794 return -EINVAL; 795 796 mutex_lock(&data->lock); 797 798 switch (sattr->nr) { 799 case INPUT: 800 /* Get a fresh value for CONTROL */ 801 data->pwm[CONTROL][sattr->index] = 802 adt7475_read(PWM_CONFIG_REG(sattr->index)); 803 804 /* 805 * If we are not in manual mode, then we shouldn't allow 806 * the user to set the pwm speed 807 */ 808 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) { 809 mutex_unlock(&data->lock); 810 return count; 811 } 812 813 reg = PWM_REG(sattr->index); 814 break; 815 816 case MIN: 817 reg = PWM_MIN_REG(sattr->index); 818 break; 819 820 case MAX: 821 reg = PWM_MAX_REG(sattr->index); 822 break; 823 } 824 825 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF); 826 i2c_smbus_write_byte_data(client, reg, 827 data->pwm[sattr->nr][sattr->index]); 828 mutex_unlock(&data->lock); 829 830 return count; 831 } 832 833 static ssize_t stall_disable_show(struct device *dev, 834 struct device_attribute *attr, char *buf) 835 { 836 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 837 struct adt7475_data *data = dev_get_drvdata(dev); 838 839 u8 mask = BIT(5 + sattr->index); 840 841 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask)); 842 } 843 844 static ssize_t stall_disable_store(struct device *dev, 845 struct device_attribute *attr, 846 const char *buf, size_t count) 847 { 848 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 849 struct adt7475_data *data = dev_get_drvdata(dev); 850 struct i2c_client *client = data->client; 851 long val; 852 u8 mask = BIT(5 + sattr->index); 853 854 if (kstrtol(buf, 10, &val)) 855 return -EINVAL; 856 857 mutex_lock(&data->lock); 858 859 data->enh_acoustics[0] &= ~mask; 860 if (val) 861 data->enh_acoustics[0] |= mask; 862 863 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1, 864 data->enh_acoustics[0]); 865 866 mutex_unlock(&data->lock); 867 868 return count; 869 } 870 871 /* Called by set_pwmctrl and set_pwmchan */ 872 873 static int hw_set_pwm(struct i2c_client *client, int index, 874 unsigned int pwmctl, unsigned int pwmchan) 875 { 876 struct adt7475_data *data = i2c_get_clientdata(client); 877 long val = 0; 878 879 switch (pwmctl) { 880 case 0: 881 val = 0x03; /* Run at full speed */ 882 break; 883 case 1: 884 val = 0x07; /* Manual mode */ 885 break; 886 case 2: 887 switch (pwmchan) { 888 case 1: 889 /* Remote1 controls PWM */ 890 val = 0x00; 891 break; 892 case 2: 893 /* local controls PWM */ 894 val = 0x01; 895 break; 896 case 4: 897 /* remote2 controls PWM */ 898 val = 0x02; 899 break; 900 case 6: 901 /* local/remote2 control PWM */ 902 val = 0x05; 903 break; 904 case 7: 905 /* All three control PWM */ 906 val = 0x06; 907 break; 908 default: 909 return -EINVAL; 910 } 911 break; 912 default: 913 return -EINVAL; 914 } 915 916 data->pwmctl[index] = pwmctl; 917 data->pwmchan[index] = pwmchan; 918 919 data->pwm[CONTROL][index] &= ~0xE0; 920 data->pwm[CONTROL][index] |= (val & 7) << 5; 921 922 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 923 data->pwm[CONTROL][index]); 924 925 return 0; 926 } 927 928 static ssize_t pwmchan_store(struct device *dev, 929 struct device_attribute *attr, const char *buf, 930 size_t count) 931 { 932 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 933 struct adt7475_data *data = dev_get_drvdata(dev); 934 struct i2c_client *client = data->client; 935 int r; 936 long val; 937 938 if (kstrtol(buf, 10, &val)) 939 return -EINVAL; 940 941 mutex_lock(&data->lock); 942 /* Read Modify Write PWM values */ 943 adt7475_read_pwm(client, sattr->index); 944 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val); 945 if (r) 946 count = r; 947 mutex_unlock(&data->lock); 948 949 return count; 950 } 951 952 static ssize_t pwmctrl_store(struct device *dev, 953 struct device_attribute *attr, const char *buf, 954 size_t count) 955 { 956 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 957 struct adt7475_data *data = dev_get_drvdata(dev); 958 struct i2c_client *client = data->client; 959 int r; 960 long val; 961 962 if (kstrtol(buf, 10, &val)) 963 return -EINVAL; 964 965 mutex_lock(&data->lock); 966 /* Read Modify Write PWM values */ 967 adt7475_read_pwm(client, sattr->index); 968 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]); 969 if (r) 970 count = r; 971 mutex_unlock(&data->lock); 972 973 return count; 974 } 975 976 /* List of frequencies for the PWM */ 977 static const int pwmfreq_table[] = { 978 11, 14, 22, 29, 35, 44, 58, 88, 22500 979 }; 980 981 static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr, 982 char *buf) 983 { 984 struct adt7475_data *data = adt7475_update_device(dev); 985 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 986 int idx; 987 988 if (IS_ERR(data)) 989 return PTR_ERR(data); 990 idx = clamp_val(data->range[sattr->index] & 0xf, 0, 991 ARRAY_SIZE(pwmfreq_table) - 1); 992 993 return sprintf(buf, "%d\n", pwmfreq_table[idx]); 994 } 995 996 static ssize_t pwmfreq_store(struct device *dev, 997 struct device_attribute *attr, const char *buf, 998 size_t count) 999 { 1000 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 1001 struct adt7475_data *data = dev_get_drvdata(dev); 1002 struct i2c_client *client = data->client; 1003 int out; 1004 long val; 1005 1006 if (kstrtol(buf, 10, &val)) 1007 return -EINVAL; 1008 1009 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table)); 1010 1011 mutex_lock(&data->lock); 1012 1013 data->range[sattr->index] = 1014 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 1015 data->range[sattr->index] &= ~0xf; 1016 data->range[sattr->index] |= out; 1017 1018 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 1019 data->range[sattr->index]); 1020 1021 mutex_unlock(&data->lock); 1022 return count; 1023 } 1024 1025 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev, 1026 struct device_attribute *devattr, 1027 char *buf) 1028 { 1029 struct adt7475_data *data = adt7475_update_device(dev); 1030 1031 if (IS_ERR(data)) 1032 return PTR_ERR(data); 1033 1034 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY)); 1035 } 1036 1037 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev, 1038 struct device_attribute *devattr, 1039 const char *buf, size_t count) 1040 { 1041 struct adt7475_data *data = dev_get_drvdata(dev); 1042 struct i2c_client *client = data->client; 1043 long val; 1044 1045 if (kstrtol(buf, 10, &val)) 1046 return -EINVAL; 1047 if (val != 0 && val != 1) 1048 return -EINVAL; 1049 1050 mutex_lock(&data->lock); 1051 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4); 1052 if (val) 1053 data->config4 |= CONFIG4_MAXDUTY; 1054 else 1055 data->config4 &= ~CONFIG4_MAXDUTY; 1056 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4); 1057 mutex_unlock(&data->lock); 1058 1059 return count; 1060 } 1061 1062 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr, 1063 char *buf) 1064 { 1065 struct adt7475_data *data = dev_get_drvdata(dev); 1066 return sprintf(buf, "%d\n", (int)data->vrm); 1067 } 1068 1069 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr, 1070 const char *buf, size_t count) 1071 { 1072 struct adt7475_data *data = dev_get_drvdata(dev); 1073 long val; 1074 1075 if (kstrtol(buf, 10, &val)) 1076 return -EINVAL; 1077 if (val < 0 || val > 255) 1078 return -EINVAL; 1079 data->vrm = val; 1080 1081 return count; 1082 } 1083 1084 static ssize_t cpu0_vid_show(struct device *dev, 1085 struct device_attribute *devattr, char *buf) 1086 { 1087 struct adt7475_data *data = adt7475_update_device(dev); 1088 1089 if (IS_ERR(data)) 1090 return PTR_ERR(data); 1091 1092 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 1093 } 1094 1095 static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0); 1096 static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0); 1097 static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0); 1098 static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0); 1099 static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1); 1100 static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1); 1101 static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1); 1102 static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1); 1103 static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2); 1104 static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2); 1105 static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2); 1106 static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2); 1107 static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3); 1108 static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3); 1109 static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3); 1110 static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3); 1111 static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4); 1112 static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4); 1113 static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4); 1114 static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8); 1115 static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5); 1116 static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5); 1117 static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5); 1118 static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31); 1119 static SENSOR_DEVICE_ATTR_2_RO(in6_input, voltage, INPUT, 6); 1120 static SENSOR_DEVICE_ATTR_2_RW(in6_max, voltage, MAX, 6); 1121 static SENSOR_DEVICE_ATTR_2_RW(in6_min, voltage, MIN, 6); 1122 static SENSOR_DEVICE_ATTR_2_RO(in6_alarm, voltage, ALARM, 30); 1123 static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0); 1124 static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0); 1125 static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0); 1126 static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0); 1127 static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0); 1128 static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0); 1129 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0); 1130 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0); 1131 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0); 1132 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0); 1133 static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0); 1134 static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1); 1135 static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1); 1136 static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1); 1137 static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1); 1138 static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1); 1139 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1); 1140 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1); 1141 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1); 1142 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1); 1143 static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1); 1144 static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2); 1145 static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2); 1146 static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2); 1147 static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2); 1148 static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2); 1149 static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2); 1150 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2); 1151 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2); 1152 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2); 1153 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2); 1154 static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2); 1155 static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0); 1156 static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0); 1157 static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0); 1158 static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1); 1159 static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1); 1160 static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1); 1161 static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2); 1162 static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2); 1163 static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2); 1164 static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3); 1165 static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3); 1166 static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3); 1167 static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0); 1168 static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0); 1169 static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0); 1170 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0); 1171 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0); 1172 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0); 1173 static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0); 1174 static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1); 1175 static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1); 1176 static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1); 1177 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1); 1178 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1); 1179 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1); 1180 static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1); 1181 static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2); 1182 static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2); 1183 static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2); 1184 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2); 1185 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2); 1186 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2); 1187 static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2); 1188 1189 /* Non-standard name, might need revisiting */ 1190 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit); 1191 1192 static DEVICE_ATTR_RW(vrm); 1193 static DEVICE_ATTR_RO(cpu0_vid); 1194 1195 static struct attribute *adt7475_attrs[] = { 1196 &sensor_dev_attr_in1_input.dev_attr.attr, 1197 &sensor_dev_attr_in1_max.dev_attr.attr, 1198 &sensor_dev_attr_in1_min.dev_attr.attr, 1199 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1200 &sensor_dev_attr_in2_input.dev_attr.attr, 1201 &sensor_dev_attr_in2_max.dev_attr.attr, 1202 &sensor_dev_attr_in2_min.dev_attr.attr, 1203 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1204 &sensor_dev_attr_temp1_input.dev_attr.attr, 1205 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1206 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1207 &sensor_dev_attr_temp1_max.dev_attr.attr, 1208 &sensor_dev_attr_temp1_min.dev_attr.attr, 1209 &sensor_dev_attr_temp1_offset.dev_attr.attr, 1210 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, 1211 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, 1212 &sensor_dev_attr_temp1_crit.dev_attr.attr, 1213 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, 1214 &sensor_dev_attr_temp1_smoothing.dev_attr.attr, 1215 &sensor_dev_attr_temp2_input.dev_attr.attr, 1216 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1217 &sensor_dev_attr_temp2_max.dev_attr.attr, 1218 &sensor_dev_attr_temp2_min.dev_attr.attr, 1219 &sensor_dev_attr_temp2_offset.dev_attr.attr, 1220 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, 1221 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, 1222 &sensor_dev_attr_temp2_crit.dev_attr.attr, 1223 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr, 1224 &sensor_dev_attr_temp2_smoothing.dev_attr.attr, 1225 &sensor_dev_attr_temp3_input.dev_attr.attr, 1226 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1227 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1228 &sensor_dev_attr_temp3_max.dev_attr.attr, 1229 &sensor_dev_attr_temp3_min.dev_attr.attr, 1230 &sensor_dev_attr_temp3_offset.dev_attr.attr, 1231 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr, 1232 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr, 1233 &sensor_dev_attr_temp3_crit.dev_attr.attr, 1234 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr, 1235 &sensor_dev_attr_temp3_smoothing.dev_attr.attr, 1236 &sensor_dev_attr_fan1_input.dev_attr.attr, 1237 &sensor_dev_attr_fan1_min.dev_attr.attr, 1238 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1239 &sensor_dev_attr_fan2_input.dev_attr.attr, 1240 &sensor_dev_attr_fan2_min.dev_attr.attr, 1241 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1242 &sensor_dev_attr_fan3_input.dev_attr.attr, 1243 &sensor_dev_attr_fan3_min.dev_attr.attr, 1244 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1245 &sensor_dev_attr_pwm1.dev_attr.attr, 1246 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 1247 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1248 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1249 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1250 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1251 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr, 1252 &sensor_dev_attr_pwm3.dev_attr.attr, 1253 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1254 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1255 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1256 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1257 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1258 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr, 1259 &dev_attr_pwm_use_point2_pwm_at_crit.attr, 1260 NULL, 1261 }; 1262 1263 static struct attribute *fan4_attrs[] = { 1264 &sensor_dev_attr_fan4_input.dev_attr.attr, 1265 &sensor_dev_attr_fan4_min.dev_attr.attr, 1266 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1267 NULL 1268 }; 1269 1270 static struct attribute *pwm2_attrs[] = { 1271 &sensor_dev_attr_pwm2.dev_attr.attr, 1272 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1273 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1274 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1275 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1276 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1277 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr, 1278 NULL 1279 }; 1280 1281 static struct attribute *in0_attrs[] = { 1282 &sensor_dev_attr_in0_input.dev_attr.attr, 1283 &sensor_dev_attr_in0_max.dev_attr.attr, 1284 &sensor_dev_attr_in0_min.dev_attr.attr, 1285 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1286 NULL 1287 }; 1288 1289 static struct attribute *in3_attrs[] = { 1290 &sensor_dev_attr_in3_input.dev_attr.attr, 1291 &sensor_dev_attr_in3_max.dev_attr.attr, 1292 &sensor_dev_attr_in3_min.dev_attr.attr, 1293 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1294 NULL 1295 }; 1296 1297 static struct attribute *in4_attrs[] = { 1298 &sensor_dev_attr_in4_input.dev_attr.attr, 1299 &sensor_dev_attr_in4_max.dev_attr.attr, 1300 &sensor_dev_attr_in4_min.dev_attr.attr, 1301 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1302 NULL 1303 }; 1304 1305 static struct attribute *in5_attrs[] = { 1306 &sensor_dev_attr_in5_input.dev_attr.attr, 1307 &sensor_dev_attr_in5_max.dev_attr.attr, 1308 &sensor_dev_attr_in5_min.dev_attr.attr, 1309 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1310 NULL 1311 }; 1312 1313 static struct attribute *in6_attrs[] = { 1314 &sensor_dev_attr_in6_input.dev_attr.attr, 1315 &sensor_dev_attr_in6_max.dev_attr.attr, 1316 &sensor_dev_attr_in6_min.dev_attr.attr, 1317 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1318 NULL 1319 }; 1320 1321 static struct attribute *vid_attrs[] = { 1322 &dev_attr_cpu0_vid.attr, 1323 &dev_attr_vrm.attr, 1324 NULL 1325 }; 1326 1327 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs }; 1328 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs }; 1329 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs }; 1330 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs }; 1331 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs }; 1332 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs }; 1333 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs }; 1334 static const struct attribute_group in6_attr_group = { .attrs = in6_attrs }; 1335 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs }; 1336 1337 static int adt7475_detect(struct i2c_client *client, 1338 struct i2c_board_info *info) 1339 { 1340 struct i2c_adapter *adapter = client->adapter; 1341 int vendid, devid, devid2; 1342 const char *name; 1343 1344 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1345 return -ENODEV; 1346 1347 vendid = adt7475_read(REG_VENDID); 1348 devid2 = adt7475_read(REG_DEVID2); 1349 if (vendid != 0x41 || /* Analog Devices */ 1350 (devid2 & 0xf8) != 0x68) 1351 return -ENODEV; 1352 1353 devid = adt7475_read(REG_DEVID); 1354 if (devid == 0x73) 1355 name = "adt7473"; 1356 else if (devid == 0x75 && client->addr == 0x2e) 1357 name = "adt7475"; 1358 else if (devid == 0x76) 1359 name = "adt7476"; 1360 else if ((devid2 & 0xfc) == 0x6c) 1361 name = "adt7490"; 1362 else { 1363 dev_dbg(&adapter->dev, 1364 "Couldn't detect an ADT7473/75/76/90 part at " 1365 "0x%02x\n", (unsigned int)client->addr); 1366 return -ENODEV; 1367 } 1368 1369 strscpy(info->type, name, I2C_NAME_SIZE); 1370 1371 return 0; 1372 } 1373 1374 static int adt7475_update_limits(struct i2c_client *client) 1375 { 1376 struct adt7475_data *data = i2c_get_clientdata(client); 1377 int i; 1378 int ret; 1379 1380 ret = adt7475_read(REG_CONFIG4); 1381 if (ret < 0) 1382 return ret; 1383 data->config4 = ret; 1384 1385 ret = adt7475_read(REG_CONFIG5); 1386 if (ret < 0) 1387 return ret; 1388 data->config5 = ret; 1389 1390 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1391 if (!(data->has_voltage & (1 << i))) 1392 continue; 1393 /* Adjust values so they match the input precision */ 1394 ret = adt7475_read(VOLTAGE_MIN_REG(i)); 1395 if (ret < 0) 1396 return ret; 1397 data->voltage[MIN][i] = ret << 2; 1398 1399 ret = adt7475_read(VOLTAGE_MAX_REG(i)); 1400 if (ret < 0) 1401 return ret; 1402 data->voltage[MAX][i] = ret << 2; 1403 } 1404 1405 if (data->has_voltage & (1 << 5)) { 1406 ret = adt7475_read(REG_VTT_MIN); 1407 if (ret < 0) 1408 return ret; 1409 data->voltage[MIN][5] = ret << 2; 1410 1411 ret = adt7475_read(REG_VTT_MAX); 1412 if (ret < 0) 1413 return ret; 1414 data->voltage[MAX][5] = ret << 2; 1415 } 1416 1417 if (data->has_voltage & (1 << 6)) { 1418 ret = adt7475_read(REG_IMON_MIN); 1419 if (ret < 0) 1420 return ret; 1421 data->voltage[MIN][6] = ret << 2; 1422 1423 ret = adt7475_read(REG_IMON_MAX); 1424 if (ret < 0) 1425 return ret; 1426 data->voltage[MAX][6] = ret << 2; 1427 } 1428 1429 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 1430 /* Adjust values so they match the input precision */ 1431 ret = adt7475_read(TEMP_MIN_REG(i)); 1432 if (ret < 0) 1433 return ret; 1434 data->temp[MIN][i] = ret << 2; 1435 1436 ret = adt7475_read(TEMP_MAX_REG(i)); 1437 if (ret < 0) 1438 return ret; 1439 data->temp[MAX][i] = ret << 2; 1440 1441 ret = adt7475_read(TEMP_TMIN_REG(i)); 1442 if (ret < 0) 1443 return ret; 1444 data->temp[AUTOMIN][i] = ret << 2; 1445 1446 ret = adt7475_read(TEMP_THERM_REG(i)); 1447 if (ret < 0) 1448 return ret; 1449 data->temp[THERM][i] = ret << 2; 1450 1451 ret = adt7475_read(TEMP_OFFSET_REG(i)); 1452 if (ret < 0) 1453 return ret; 1454 data->temp[OFFSET][i] = ret; 1455 } 1456 adt7475_read_hystersis(client); 1457 1458 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 1459 if (i == 3 && !data->has_fan4) 1460 continue; 1461 ret = adt7475_read_word(client, TACH_MIN_REG(i)); 1462 if (ret < 0) 1463 return ret; 1464 data->tach[MIN][i] = ret; 1465 } 1466 1467 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1468 if (i == 1 && !data->has_pwm2) 1469 continue; 1470 ret = adt7475_read(PWM_MAX_REG(i)); 1471 if (ret < 0) 1472 return ret; 1473 data->pwm[MAX][i] = ret; 1474 1475 ret = adt7475_read(PWM_MIN_REG(i)); 1476 if (ret < 0) 1477 return ret; 1478 data->pwm[MIN][i] = ret; 1479 /* Set the channel and control information */ 1480 adt7475_read_pwm(client, i); 1481 } 1482 1483 ret = adt7475_read(TEMP_TRANGE_REG(0)); 1484 if (ret < 0) 1485 return ret; 1486 data->range[0] = ret; 1487 1488 ret = adt7475_read(TEMP_TRANGE_REG(1)); 1489 if (ret < 0) 1490 return ret; 1491 data->range[1] = ret; 1492 1493 ret = adt7475_read(TEMP_TRANGE_REG(2)); 1494 if (ret < 0) 1495 return ret; 1496 data->range[2] = ret; 1497 1498 return 0; 1499 } 1500 1501 static int load_config3(const struct i2c_client *client, const char *propname) 1502 { 1503 const char *function; 1504 u8 config3; 1505 int ret; 1506 1507 ret = device_property_read_string(&client->dev, propname, &function); 1508 if (!ret) { 1509 ret = adt7475_read(REG_CONFIG3); 1510 if (ret < 0) 1511 return ret; 1512 1513 config3 = ret & ~CONFIG3_SMBALERT; 1514 if (!strcmp("pwm2", function)) 1515 ; 1516 else if (!strcmp("smbalert#", function)) 1517 config3 |= CONFIG3_SMBALERT; 1518 else 1519 return -EINVAL; 1520 1521 return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3); 1522 } 1523 1524 return 0; 1525 } 1526 1527 static int load_config4(const struct i2c_client *client, const char *propname) 1528 { 1529 const char *function; 1530 u8 config4; 1531 int ret; 1532 1533 ret = device_property_read_string(&client->dev, propname, &function); 1534 if (!ret) { 1535 ret = adt7475_read(REG_CONFIG4); 1536 if (ret < 0) 1537 return ret; 1538 1539 config4 = ret & ~CONFIG4_PINFUNC; 1540 1541 if (!strcmp("tach4", function)) 1542 ; 1543 else if (!strcmp("therm#", function)) 1544 config4 |= CONFIG4_THERM; 1545 else if (!strcmp("smbalert#", function)) 1546 config4 |= CONFIG4_SMBALERT; 1547 else if (!strcmp("gpio", function)) 1548 config4 |= CONFIG4_PINFUNC; 1549 else 1550 return -EINVAL; 1551 1552 return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4); 1553 } 1554 1555 return 0; 1556 } 1557 1558 static int load_config(const struct i2c_client *client, enum chips chip) 1559 { 1560 int err; 1561 const char *prop1, *prop2; 1562 1563 switch (chip) { 1564 case adt7473: 1565 case adt7475: 1566 prop1 = "adi,pin5-function"; 1567 prop2 = "adi,pin9-function"; 1568 break; 1569 case adt7476: 1570 case adt7490: 1571 prop1 = "adi,pin10-function"; 1572 prop2 = "adi,pin14-function"; 1573 break; 1574 } 1575 1576 err = load_config3(client, prop1); 1577 if (err) { 1578 dev_err(&client->dev, "failed to configure %s\n", prop1); 1579 return err; 1580 } 1581 1582 err = load_config4(client, prop2); 1583 if (err) { 1584 dev_err(&client->dev, "failed to configure %s\n", prop2); 1585 return err; 1586 } 1587 1588 return 0; 1589 } 1590 1591 static int set_property_bit(const struct i2c_client *client, char *property, 1592 u8 *config, u8 bit_index) 1593 { 1594 u32 prop_value = 0; 1595 int ret = device_property_read_u32(&client->dev, property, 1596 &prop_value); 1597 1598 if (!ret) { 1599 if (prop_value) 1600 *config |= (1 << bit_index); 1601 else 1602 *config &= ~(1 << bit_index); 1603 } 1604 1605 return ret; 1606 } 1607 1608 static int load_attenuators(const struct i2c_client *client, enum chips chip, 1609 struct adt7475_data *data) 1610 { 1611 switch (chip) { 1612 case adt7476: 1613 case adt7490: 1614 set_property_bit(client, "adi,bypass-attenuator-in0", 1615 &data->config4, 4); 1616 set_property_bit(client, "adi,bypass-attenuator-in1", 1617 &data->config4, 5); 1618 set_property_bit(client, "adi,bypass-attenuator-in3", 1619 &data->config4, 6); 1620 set_property_bit(client, "adi,bypass-attenuator-in4", 1621 &data->config4, 7); 1622 1623 return i2c_smbus_write_byte_data(client, REG_CONFIG4, 1624 data->config4); 1625 case adt7473: 1626 case adt7475: 1627 set_property_bit(client, "adi,bypass-attenuator-in1", 1628 &data->config2, 5); 1629 1630 return i2c_smbus_write_byte_data(client, REG_CONFIG2, 1631 data->config2); 1632 } 1633 1634 return 0; 1635 } 1636 1637 static int adt7475_set_pwm_polarity(struct i2c_client *client) 1638 { 1639 u32 states[ADT7475_PWM_COUNT]; 1640 int ret, i; 1641 u8 val; 1642 1643 ret = device_property_read_u32_array(&client->dev, 1644 "adi,pwm-active-state", states, 1645 ARRAY_SIZE(states)); 1646 if (ret) 1647 return ret; 1648 1649 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1650 ret = adt7475_read(PWM_CONFIG_REG(i)); 1651 if (ret < 0) 1652 return ret; 1653 val = ret; 1654 if (states[i]) 1655 val &= ~BIT(4); 1656 else 1657 val |= BIT(4); 1658 1659 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val); 1660 if (ret) 1661 return ret; 1662 } 1663 1664 return 0; 1665 } 1666 1667 struct adt7475_pwm_config { 1668 int index; 1669 int freq; 1670 int flags; 1671 int duty; 1672 }; 1673 1674 static int _adt7475_pwm_properties_parse_args(u32 args[4], struct adt7475_pwm_config *cfg) 1675 { 1676 int freq_hz; 1677 int duty; 1678 1679 if (args[1] == 0) 1680 return -EINVAL; 1681 1682 freq_hz = 1000000000UL / args[1]; 1683 if (args[3] >= args[1]) 1684 duty = 255; 1685 else 1686 duty = div_u64(255ULL * args[3], args[1]); 1687 1688 cfg->index = args[0]; 1689 cfg->freq = find_closest(freq_hz, pwmfreq_table, ARRAY_SIZE(pwmfreq_table)); 1690 cfg->flags = args[2]; 1691 cfg->duty = duty; 1692 1693 return 0; 1694 } 1695 1696 static int adt7475_pwm_properties_parse_reference_args(struct fwnode_handle *fwnode, 1697 struct adt7475_pwm_config *cfg) 1698 { 1699 int ret, i; 1700 struct fwnode_reference_args rargs = {}; 1701 u32 args[4] = {}; 1702 1703 ret = fwnode_property_get_reference_args(fwnode, "pwms", "#pwm-cells", 0, 0, &rargs); 1704 if (ret) 1705 return ret; 1706 1707 if (rargs.nargs != 4) { 1708 fwnode_handle_put(rargs.fwnode); 1709 return -EINVAL; 1710 } 1711 1712 for (i = 0; i < 4; i++) 1713 args[i] = rargs.args[i]; 1714 1715 ret = _adt7475_pwm_properties_parse_args(args, cfg); 1716 1717 fwnode_handle_put(rargs.fwnode); 1718 1719 return ret; 1720 } 1721 1722 static int adt7475_pwm_properties_parse_args(struct fwnode_handle *fwnode, 1723 struct adt7475_pwm_config *cfg) 1724 { 1725 int ret; 1726 u32 args[4] = {}; 1727 1728 ret = fwnode_property_read_u32_array(fwnode, "pwms", args, ARRAY_SIZE(args)); 1729 if (ret) 1730 return ret; 1731 1732 return _adt7475_pwm_properties_parse_args(args, cfg); 1733 } 1734 1735 static int adt7475_fan_pwm_config(struct i2c_client *client) 1736 { 1737 struct adt7475_data *data = i2c_get_clientdata(client); 1738 struct fwnode_handle *child; 1739 struct adt7475_pwm_config cfg = {}; 1740 int ret; 1741 1742 device_for_each_child_node(&client->dev, child) { 1743 if (!fwnode_property_present(child, "pwms")) 1744 continue; 1745 1746 if (is_of_node(child)) 1747 ret = adt7475_pwm_properties_parse_reference_args(child, &cfg); 1748 else 1749 ret = adt7475_pwm_properties_parse_args(child, &cfg); 1750 1751 if (cfg.index >= ADT7475_PWM_COUNT) 1752 return -EINVAL; 1753 1754 ret = adt7475_read(PWM_CONFIG_REG(cfg.index)); 1755 if (ret < 0) 1756 return ret; 1757 data->pwm[CONTROL][cfg.index] = ret; 1758 if (cfg.flags & PWM_POLARITY_INVERTED) 1759 data->pwm[CONTROL][cfg.index] |= BIT(4); 1760 else 1761 data->pwm[CONTROL][cfg.index] &= ~BIT(4); 1762 1763 /* Force to manual mode so PWM values take effect */ 1764 data->pwm[CONTROL][cfg.index] &= ~0xE0; 1765 data->pwm[CONTROL][cfg.index] |= 0x07 << 5; 1766 1767 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(cfg.index), 1768 data->pwm[CONTROL][cfg.index]); 1769 if (ret) 1770 return ret; 1771 1772 data->pwm[INPUT][cfg.index] = cfg.duty; 1773 ret = i2c_smbus_write_byte_data(client, PWM_REG(cfg.index), 1774 data->pwm[INPUT][cfg.index]); 1775 if (ret) 1776 return ret; 1777 1778 data->range[cfg.index] = adt7475_read(TEMP_TRANGE_REG(cfg.index)); 1779 data->range[cfg.index] &= ~0xf; 1780 data->range[cfg.index] |= cfg.freq; 1781 1782 ret = i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(cfg.index), 1783 data->range[cfg.index]); 1784 if (ret) 1785 return ret; 1786 } 1787 1788 return 0; 1789 } 1790 1791 static int adt7475_probe(struct i2c_client *client) 1792 { 1793 enum chips chip; 1794 static const char * const names[] = { 1795 [adt7473] = "ADT7473", 1796 [adt7475] = "ADT7475", 1797 [adt7476] = "ADT7476", 1798 [adt7490] = "ADT7490", 1799 }; 1800 1801 struct adt7475_data *data; 1802 struct device *hwmon_dev; 1803 int i, ret = 0, revision, group_num = 0; 1804 u8 config3; 1805 1806 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); 1807 if (data == NULL) 1808 return -ENOMEM; 1809 1810 mutex_init(&data->lock); 1811 data->client = client; 1812 i2c_set_clientdata(client, data); 1813 1814 chip = (uintptr_t)i2c_get_match_data(client); 1815 1816 /* Initialize device-specific values */ 1817 switch (chip) { 1818 case adt7476: 1819 data->has_voltage = 0x0e; /* in1 to in3 */ 1820 revision = adt7475_read(REG_DEVID2) & 0x07; 1821 break; 1822 case adt7490: 1823 data->has_voltage = 0x7e; /* in1 to in6 */ 1824 revision = adt7475_read(REG_DEVID2) & 0x03; 1825 if (revision == 0x03) 1826 revision += adt7475_read(REG_DEVREV2); 1827 break; 1828 default: 1829 data->has_voltage = 0x06; /* in1, in2 */ 1830 revision = adt7475_read(REG_DEVID2) & 0x07; 1831 } 1832 1833 ret = load_config(client, chip); 1834 if (ret) 1835 return ret; 1836 1837 config3 = adt7475_read(REG_CONFIG3); 1838 /* Pin PWM2 may alternatively be used for ALERT output */ 1839 if (!(config3 & CONFIG3_SMBALERT)) 1840 data->has_pwm2 = 1; 1841 /* Meaning of this bit is inverted for the ADT7473-1 */ 1842 if (chip == adt7473 && revision >= 1) 1843 data->has_pwm2 = !data->has_pwm2; 1844 1845 data->config4 = adt7475_read(REG_CONFIG4); 1846 /* Pin TACH4 may alternatively be used for THERM */ 1847 if ((data->config4 & CONFIG4_PINFUNC) == 0x0) 1848 data->has_fan4 = 1; 1849 1850 /* 1851 * THERM configuration is more complex on the ADT7476 and ADT7490, 1852 * because 2 different pins (TACH4 and +2.5 Vin) can be used for 1853 * this function 1854 */ 1855 if (chip == adt7490) { 1856 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 && 1857 !(config3 & CONFIG3_THERM)) 1858 data->has_fan4 = 1; 1859 } 1860 if (chip == adt7476 || chip == adt7490) { 1861 if (!(config3 & CONFIG3_THERM) || 1862 (data->config4 & CONFIG4_PINFUNC) == 0x1) 1863 data->has_voltage |= (1 << 0); /* in0 */ 1864 } 1865 1866 /* 1867 * On the ADT7476, the +12V input pin may instead be used as VID5, 1868 * and VID pins may alternatively be used as GPIO 1869 */ 1870 if (chip == adt7476) { 1871 u8 vid = adt7475_read(REG_VID); 1872 if (!(vid & VID_VIDSEL)) 1873 data->has_voltage |= (1 << 4); /* in4 */ 1874 1875 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO); 1876 } 1877 1878 /* Voltage attenuators can be bypassed, globally or individually */ 1879 data->config2 = adt7475_read(REG_CONFIG2); 1880 ret = load_attenuators(client, chip, data); 1881 if (ret) 1882 dev_warn(&client->dev, "Error configuring attenuator bypass\n"); 1883 1884 if (data->config2 & CONFIG2_ATTN) { 1885 data->bypass_attn = (0x3 << 3) | 0x3; 1886 } else { 1887 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) | 1888 ((data->config4 & CONFIG4_ATTN_IN43) >> 3); 1889 } 1890 data->bypass_attn &= data->has_voltage; 1891 1892 /* 1893 * Call adt7475_read_pwm for all pwm's as this will reprogram any 1894 * pwm's which are disabled to manual mode with 0% duty cycle 1895 */ 1896 for (i = 0; i < ADT7475_PWM_COUNT; i++) 1897 adt7475_read_pwm(client, i); 1898 1899 ret = adt7475_set_pwm_polarity(client); 1900 if (ret && ret != -EINVAL) 1901 dev_warn(&client->dev, "Error configuring pwm polarity\n"); 1902 1903 ret = adt7475_fan_pwm_config(client); 1904 if (ret) 1905 dev_warn(&client->dev, "Error %d configuring fan/pwm\n", ret); 1906 1907 /* Start monitoring */ 1908 switch (chip) { 1909 case adt7475: 1910 case adt7476: 1911 i2c_smbus_write_byte_data(client, REG_CONFIG1, 1912 adt7475_read(REG_CONFIG1) | 0x01); 1913 break; 1914 default: 1915 break; 1916 } 1917 1918 data->groups[group_num++] = &adt7475_attr_group; 1919 1920 /* Features that can be disabled individually */ 1921 if (data->has_fan4) { 1922 data->groups[group_num++] = &fan4_attr_group; 1923 } 1924 if (data->has_pwm2) { 1925 data->groups[group_num++] = &pwm2_attr_group; 1926 } 1927 if (data->has_voltage & (1 << 0)) { 1928 data->groups[group_num++] = &in0_attr_group; 1929 } 1930 if (data->has_voltage & (1 << 3)) { 1931 data->groups[group_num++] = &in3_attr_group; 1932 } 1933 if (data->has_voltage & (1 << 4)) { 1934 data->groups[group_num++] = &in4_attr_group; 1935 } 1936 if (data->has_voltage & (1 << 5)) { 1937 data->groups[group_num++] = &in5_attr_group; 1938 } 1939 if (data->has_voltage & (1 << 6)) { 1940 data->groups[group_num++] = &in6_attr_group; 1941 } 1942 if (data->has_vid) { 1943 data->vrm = vid_which_vrm(); 1944 data->groups[group_num] = &vid_attr_group; 1945 } 1946 1947 /* register device with all the acquired attributes */ 1948 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev, 1949 client->name, data, 1950 data->groups); 1951 1952 if (IS_ERR(hwmon_dev)) { 1953 ret = PTR_ERR(hwmon_dev); 1954 return ret; 1955 } 1956 1957 dev_info(&client->dev, "%s device, revision %d\n", 1958 names[chip], revision); 1959 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2) 1960 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n", 1961 (data->has_voltage & (1 << 0)) ? " in0" : "", 1962 (data->has_voltage & (1 << 4)) ? " in4" : "", 1963 data->has_fan4 ? " fan4" : "", 1964 data->has_pwm2 ? " pwm2" : "", 1965 data->has_vid ? " vid" : ""); 1966 if (data->bypass_attn) 1967 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n", 1968 (data->bypass_attn & (1 << 0)) ? " in0" : "", 1969 (data->bypass_attn & (1 << 1)) ? " in1" : "", 1970 (data->bypass_attn & (1 << 3)) ? " in3" : "", 1971 (data->bypass_attn & (1 << 4)) ? " in4" : ""); 1972 1973 /* Limits and settings, should never change update more than once */ 1974 ret = adt7475_update_limits(client); 1975 if (ret) 1976 return ret; 1977 1978 return 0; 1979 } 1980 1981 static struct i2c_driver adt7475_driver = { 1982 .class = I2C_CLASS_HWMON, 1983 .driver = { 1984 .name = "adt7475", 1985 .of_match_table = of_match_ptr(adt7475_of_match), 1986 }, 1987 .probe = adt7475_probe, 1988 .id_table = adt7475_id, 1989 .detect = adt7475_detect, 1990 .address_list = normal_i2c, 1991 }; 1992 1993 static void adt7475_read_hystersis(struct i2c_client *client) 1994 { 1995 struct adt7475_data *data = i2c_get_clientdata(client); 1996 1997 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS); 1998 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0]; 1999 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS); 2000 } 2001 2002 static void adt7475_read_pwm(struct i2c_client *client, int index) 2003 { 2004 struct adt7475_data *data = i2c_get_clientdata(client); 2005 unsigned int v; 2006 2007 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index)); 2008 2009 /* 2010 * Figure out the internal value for pwmctrl and pwmchan 2011 * based on the current settings 2012 */ 2013 v = (data->pwm[CONTROL][index] >> 5) & 7; 2014 2015 if (v == 3) 2016 data->pwmctl[index] = 0; 2017 else if (v == 7) 2018 data->pwmctl[index] = 1; 2019 else if (v == 4) { 2020 /* 2021 * The fan is disabled - we don't want to 2022 * support that, so change to manual mode and 2023 * set the duty cycle to 0 instead 2024 */ 2025 data->pwm[INPUT][index] = 0; 2026 data->pwm[CONTROL][index] &= ~0xE0; 2027 data->pwm[CONTROL][index] |= (7 << 5); 2028 2029 i2c_smbus_write_byte_data(client, PWM_REG(index), 2030 data->pwm[INPUT][index]); 2031 2032 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 2033 data->pwm[CONTROL][index]); 2034 2035 data->pwmctl[index] = 1; 2036 } else { 2037 data->pwmctl[index] = 2; 2038 2039 switch (v) { 2040 case 0: 2041 data->pwmchan[index] = 1; 2042 break; 2043 case 1: 2044 data->pwmchan[index] = 2; 2045 break; 2046 case 2: 2047 data->pwmchan[index] = 4; 2048 break; 2049 case 5: 2050 data->pwmchan[index] = 6; 2051 break; 2052 case 6: 2053 data->pwmchan[index] = 7; 2054 break; 2055 } 2056 } 2057 } 2058 2059 static int adt7475_update_measure(struct device *dev) 2060 { 2061 struct adt7475_data *data = dev_get_drvdata(dev); 2062 struct i2c_client *client = data->client; 2063 u16 ext; 2064 int i; 2065 int ret; 2066 2067 ret = adt7475_read(REG_STATUS2); 2068 if (ret < 0) 2069 return ret; 2070 data->alarms = ret << 8; 2071 2072 ret = adt7475_read(REG_STATUS1); 2073 if (ret < 0) 2074 return ret; 2075 data->alarms |= ret; 2076 2077 ret = adt7475_read(REG_EXTEND2); 2078 if (ret < 0) 2079 return ret; 2080 2081 ext = (ret << 8); 2082 2083 ret = adt7475_read(REG_EXTEND1); 2084 if (ret < 0) 2085 return ret; 2086 2087 ext |= ret; 2088 2089 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 2090 if (!(data->has_voltage & (1 << i))) 2091 continue; 2092 ret = adt7475_read(VOLTAGE_REG(i)); 2093 if (ret < 0) 2094 return ret; 2095 data->voltage[INPUT][i] = 2096 (ret << 2) | 2097 ((ext >> (i * 2)) & 3); 2098 } 2099 2100 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 2101 ret = adt7475_read(TEMP_REG(i)); 2102 if (ret < 0) 2103 return ret; 2104 data->temp[INPUT][i] = 2105 (ret << 2) | 2106 ((ext >> ((i + 5) * 2)) & 3); 2107 } 2108 2109 if (data->has_voltage & (1 << 5)) { 2110 ret = adt7475_read(REG_STATUS4); 2111 if (ret < 0) 2112 return ret; 2113 data->alarms |= ret << 24; 2114 2115 ret = adt7475_read(REG_EXTEND3); 2116 if (ret < 0) 2117 return ret; 2118 ext = ret; 2119 2120 ret = adt7475_read(REG_VTT); 2121 if (ret < 0) 2122 return ret; 2123 data->voltage[INPUT][5] = ret << 2 | 2124 ((ext >> 4) & 3); 2125 } 2126 2127 if (data->has_voltage & (1 << 6)) { 2128 ret = adt7475_read(REG_STATUS4); 2129 if (ret < 0) 2130 return ret; 2131 data->alarms |= ret << 24; 2132 2133 ret = adt7475_read(REG_EXTEND3); 2134 if (ret < 0) 2135 return ret; 2136 ext = ret; 2137 2138 ret = adt7475_read(REG_IMON); 2139 if (ret < 0) 2140 return ret; 2141 data->voltage[INPUT][6] = ret << 2 | 2142 ((ext >> 6) & 3); 2143 } 2144 2145 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 2146 if (i == 3 && !data->has_fan4) 2147 continue; 2148 ret = adt7475_read_word(client, TACH_REG(i)); 2149 if (ret < 0) 2150 return ret; 2151 data->tach[INPUT][i] = ret; 2152 } 2153 2154 /* Updated by hw when in auto mode */ 2155 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 2156 if (i == 1 && !data->has_pwm2) 2157 continue; 2158 ret = adt7475_read(PWM_REG(i)); 2159 if (ret < 0) 2160 return ret; 2161 data->pwm[INPUT][i] = ret; 2162 } 2163 2164 if (data->has_vid) { 2165 ret = adt7475_read(REG_VID); 2166 if (ret < 0) 2167 return ret; 2168 data->vid = ret & 0x3f; 2169 } 2170 2171 return 0; 2172 } 2173 2174 static struct adt7475_data *adt7475_update_device(struct device *dev) 2175 { 2176 struct adt7475_data *data = dev_get_drvdata(dev); 2177 int ret; 2178 2179 mutex_lock(&data->lock); 2180 2181 /* Measurement values update every 2 seconds */ 2182 if (time_after(jiffies, data->measure_updated + HZ * 2) || 2183 !data->valid) { 2184 ret = adt7475_update_measure(dev); 2185 if (ret) { 2186 data->valid = false; 2187 mutex_unlock(&data->lock); 2188 return ERR_PTR(ret); 2189 } 2190 data->measure_updated = jiffies; 2191 data->valid = true; 2192 } 2193 2194 mutex_unlock(&data->lock); 2195 2196 return data; 2197 } 2198 2199 module_i2c_driver(adt7475_driver); 2200 2201 MODULE_AUTHOR("Advanced Micro Devices, Inc"); 2202 MODULE_DESCRIPTION("adt7475 driver"); 2203 MODULE_LICENSE("GPL"); 2204