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/of_device.h> 14 #include <linux/init.h> 15 #include <linux/slab.h> 16 #include <linux/i2c.h> 17 #include <linux/hwmon.h> 18 #include <linux/hwmon-sysfs.h> 19 #include <linux/hwmon-vid.h> 20 #include <linux/err.h> 21 #include <linux/jiffies.h> 22 #include <linux/of.h> 23 #include <linux/util_macros.h> 24 25 /* Indexes for the sysfs hooks */ 26 27 #define INPUT 0 28 #define MIN 1 29 #define MAX 2 30 #define CONTROL 3 31 #define OFFSET 3 32 #define AUTOMIN 4 33 #define THERM 5 34 #define HYSTERSIS 6 35 36 /* 37 * These are unique identifiers for the sysfs functions - unlike the 38 * numbers above, these are not also indexes into an array 39 */ 40 41 #define ALARM 9 42 #define FAULT 10 43 44 /* 7475 Common Registers */ 45 46 #define REG_DEVREV2 0x12 /* 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 VID_VIDSEL 0x80 /* ADT7476 only */ 108 109 #define CONFIG2_ATTN 0x20 110 111 #define CONFIG3_SMBALERT 0x01 112 #define CONFIG3_THERM 0x02 113 114 #define CONFIG4_PINFUNC 0x03 115 #define CONFIG4_MAXDUTY 0x08 116 #define CONFIG4_ATTN_IN10 0x30 117 #define CONFIG4_ATTN_IN43 0xC0 118 119 #define CONFIG5_TWOSCOMP 0x01 120 #define CONFIG5_TEMPOFFSET 0x02 121 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */ 122 123 /* ADT7475 Settings */ 124 125 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */ 126 #define ADT7475_TEMP_COUNT 3 127 #define ADT7475_TACH_COUNT 4 128 #define ADT7475_PWM_COUNT 3 129 130 /* Macro to read the registers */ 131 132 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg)) 133 134 /* Macros to easily index the registers */ 135 136 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2)) 137 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2)) 138 139 #define PWM_REG(idx) (REG_PWM_BASE + (idx)) 140 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx)) 141 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx)) 142 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx)) 143 144 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx)) 145 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2)) 146 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2)) 147 148 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx)) 149 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2)) 150 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2)) 151 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx)) 152 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx)) 153 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx)) 154 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx)) 155 156 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 157 158 enum chips { adt7473, adt7475, adt7476, adt7490 }; 159 160 static const struct i2c_device_id adt7475_id[] = { 161 { "adt7473", adt7473 }, 162 { "adt7475", adt7475 }, 163 { "adt7476", adt7476 }, 164 { "adt7490", adt7490 }, 165 { } 166 }; 167 MODULE_DEVICE_TABLE(i2c, adt7475_id); 168 169 static const struct of_device_id __maybe_unused adt7475_of_match[] = { 170 { 171 .compatible = "adi,adt7473", 172 .data = (void *)adt7473 173 }, 174 { 175 .compatible = "adi,adt7475", 176 .data = (void *)adt7475 177 }, 178 { 179 .compatible = "adi,adt7476", 180 .data = (void *)adt7476 181 }, 182 { 183 .compatible = "adi,adt7490", 184 .data = (void *)adt7490 185 }, 186 { }, 187 }; 188 MODULE_DEVICE_TABLE(of, adt7475_of_match); 189 190 struct adt7475_data { 191 struct i2c_client *client; 192 struct mutex lock; 193 194 unsigned long measure_updated; 195 bool valid; 196 197 u8 config2; 198 u8 config4; 199 u8 config5; 200 u8 has_voltage; 201 u8 bypass_attn; /* Bypass voltage attenuator */ 202 u8 has_pwm2:1; 203 u8 has_fan4:1; 204 u8 has_vid:1; 205 u32 alarms; 206 u16 voltage[3][6]; 207 u16 temp[7][3]; 208 u16 tach[2][4]; 209 u8 pwm[4][3]; 210 u8 range[3]; 211 u8 pwmctl[3]; 212 u8 pwmchan[3]; 213 u8 enh_acoustics[2]; 214 215 u8 vid; 216 u8 vrm; 217 const struct attribute_group *groups[9]; 218 }; 219 220 static struct i2c_driver adt7475_driver; 221 static struct adt7475_data *adt7475_update_device(struct device *dev); 222 static void adt7475_read_hystersis(struct i2c_client *client); 223 static void adt7475_read_pwm(struct i2c_client *client, int index); 224 225 /* Given a temp value, convert it to register value */ 226 227 static inline u16 temp2reg(struct adt7475_data *data, long val) 228 { 229 u16 ret; 230 231 if (!(data->config5 & CONFIG5_TWOSCOMP)) { 232 val = clamp_val(val, -64000, 191000); 233 ret = (val + 64500) / 1000; 234 } else { 235 val = clamp_val(val, -128000, 127000); 236 if (val < -500) 237 ret = (256500 + val) / 1000; 238 else 239 ret = (val + 500) / 1000; 240 } 241 242 return ret << 2; 243 } 244 245 /* Given a register value, convert it to a real temp value */ 246 247 static inline int reg2temp(struct adt7475_data *data, u16 reg) 248 { 249 if (data->config5 & CONFIG5_TWOSCOMP) { 250 if (reg >= 512) 251 return (reg - 1024) * 250; 252 else 253 return reg * 250; 254 } else 255 return (reg - 256) * 250; 256 } 257 258 static inline int tach2rpm(u16 tach) 259 { 260 if (tach == 0 || tach == 0xFFFF) 261 return 0; 262 263 return (90000 * 60) / tach; 264 } 265 266 static inline u16 rpm2tach(unsigned long rpm) 267 { 268 if (rpm == 0) 269 return 0; 270 271 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF); 272 } 273 274 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */ 275 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = { 276 { 45, 94 }, /* +2.5V */ 277 { 175, 525 }, /* Vccp */ 278 { 68, 71 }, /* Vcc */ 279 { 93, 47 }, /* +5V */ 280 { 120, 20 }, /* +12V */ 281 { 45, 45 }, /* Vtt */ 282 }; 283 284 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn) 285 { 286 const int *r = adt7473_in_scaling[channel]; 287 288 if (bypass_attn & (1 << channel)) 289 return DIV_ROUND_CLOSEST(reg * 2250, 1024); 290 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024); 291 } 292 293 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn) 294 { 295 const int *r = adt7473_in_scaling[channel]; 296 long reg; 297 298 if (bypass_attn & (1 << channel)) 299 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250); 300 else 301 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024, 302 (r[0] + r[1]) * 2250); 303 return clamp_val(reg, 0, 1023) & (0xff << 2); 304 } 305 306 static int adt7475_read_word(struct i2c_client *client, int reg) 307 { 308 int val1, val2; 309 310 val1 = i2c_smbus_read_byte_data(client, reg); 311 if (val1 < 0) 312 return val1; 313 val2 = i2c_smbus_read_byte_data(client, reg + 1); 314 if (val2 < 0) 315 return val2; 316 317 return val1 | (val2 << 8); 318 } 319 320 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val) 321 { 322 i2c_smbus_write_byte_data(client, reg + 1, val >> 8); 323 i2c_smbus_write_byte_data(client, reg, val & 0xFF); 324 } 325 326 static ssize_t voltage_show(struct device *dev, struct device_attribute *attr, 327 char *buf) 328 { 329 struct adt7475_data *data = adt7475_update_device(dev); 330 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 331 unsigned short val; 332 333 if (IS_ERR(data)) 334 return PTR_ERR(data); 335 336 switch (sattr->nr) { 337 case ALARM: 338 return sprintf(buf, "%d\n", 339 (data->alarms >> sattr->index) & 1); 340 default: 341 val = data->voltage[sattr->nr][sattr->index]; 342 return sprintf(buf, "%d\n", 343 reg2volt(sattr->index, val, data->bypass_attn)); 344 } 345 } 346 347 static ssize_t voltage_store(struct device *dev, 348 struct device_attribute *attr, const char *buf, 349 size_t count) 350 { 351 352 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 353 struct adt7475_data *data = dev_get_drvdata(dev); 354 struct i2c_client *client = data->client; 355 unsigned char reg; 356 long val; 357 358 if (kstrtol(buf, 10, &val)) 359 return -EINVAL; 360 361 mutex_lock(&data->lock); 362 363 data->voltage[sattr->nr][sattr->index] = 364 volt2reg(sattr->index, val, data->bypass_attn); 365 366 if (sattr->index < ADT7475_VOLTAGE_COUNT) { 367 if (sattr->nr == MIN) 368 reg = VOLTAGE_MIN_REG(sattr->index); 369 else 370 reg = VOLTAGE_MAX_REG(sattr->index); 371 } else { 372 if (sattr->nr == MIN) 373 reg = REG_VTT_MIN; 374 else 375 reg = REG_VTT_MAX; 376 } 377 378 i2c_smbus_write_byte_data(client, reg, 379 data->voltage[sattr->nr][sattr->index] >> 2); 380 mutex_unlock(&data->lock); 381 382 return count; 383 } 384 385 static ssize_t temp_show(struct device *dev, struct device_attribute *attr, 386 char *buf) 387 { 388 struct adt7475_data *data = adt7475_update_device(dev); 389 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 390 int out; 391 392 if (IS_ERR(data)) 393 return PTR_ERR(data); 394 395 switch (sattr->nr) { 396 case HYSTERSIS: 397 mutex_lock(&data->lock); 398 out = data->temp[sattr->nr][sattr->index]; 399 if (sattr->index != 1) 400 out = (out >> 4) & 0xF; 401 else 402 out = (out & 0xF); 403 /* 404 * Show the value as an absolute number tied to 405 * THERM 406 */ 407 out = reg2temp(data, data->temp[THERM][sattr->index]) - 408 out * 1000; 409 mutex_unlock(&data->lock); 410 break; 411 412 case OFFSET: 413 /* 414 * Offset is always 2's complement, regardless of the 415 * setting in CONFIG5 416 */ 417 mutex_lock(&data->lock); 418 out = (s8)data->temp[sattr->nr][sattr->index]; 419 if (data->config5 & CONFIG5_TEMPOFFSET) 420 out *= 1000; 421 else 422 out *= 500; 423 mutex_unlock(&data->lock); 424 break; 425 426 case ALARM: 427 out = (data->alarms >> (sattr->index + 4)) & 1; 428 break; 429 430 case FAULT: 431 /* Note - only for remote1 and remote2 */ 432 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000)); 433 break; 434 435 default: 436 /* All other temp values are in the configured format */ 437 out = reg2temp(data, data->temp[sattr->nr][sattr->index]); 438 } 439 440 return sprintf(buf, "%d\n", out); 441 } 442 443 static ssize_t temp_store(struct device *dev, struct device_attribute *attr, 444 const char *buf, size_t count) 445 { 446 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 447 struct adt7475_data *data = dev_get_drvdata(dev); 448 struct i2c_client *client = data->client; 449 unsigned char reg = 0; 450 u8 out; 451 int temp; 452 long val; 453 454 if (kstrtol(buf, 10, &val)) 455 return -EINVAL; 456 457 mutex_lock(&data->lock); 458 459 /* We need the config register in all cases for temp <-> reg conv. */ 460 data->config5 = adt7475_read(REG_CONFIG5); 461 462 switch (sattr->nr) { 463 case OFFSET: 464 if (data->config5 & CONFIG5_TEMPOFFSET) { 465 val = clamp_val(val, -63000, 127000); 466 out = data->temp[OFFSET][sattr->index] = val / 1000; 467 } else { 468 val = clamp_val(val, -63000, 64000); 469 out = data->temp[OFFSET][sattr->index] = val / 500; 470 } 471 break; 472 473 case HYSTERSIS: 474 /* 475 * The value will be given as an absolute value, turn it 476 * into an offset based on THERM 477 */ 478 479 /* Read fresh THERM and HYSTERSIS values from the chip */ 480 data->temp[THERM][sattr->index] = 481 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2; 482 adt7475_read_hystersis(client); 483 484 temp = reg2temp(data, data->temp[THERM][sattr->index]); 485 val = clamp_val(val, temp - 15000, temp); 486 val = (temp - val) / 1000; 487 488 if (sattr->index != 1) { 489 data->temp[HYSTERSIS][sattr->index] &= 0xF0; 490 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4; 491 } else { 492 data->temp[HYSTERSIS][sattr->index] &= 0x0F; 493 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF); 494 } 495 496 out = data->temp[HYSTERSIS][sattr->index]; 497 break; 498 499 default: 500 data->temp[sattr->nr][sattr->index] = temp2reg(data, val); 501 502 /* 503 * We maintain an extra 2 digits of precision for simplicity 504 * - shift those back off before writing the value 505 */ 506 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2); 507 } 508 509 switch (sattr->nr) { 510 case MIN: 511 reg = TEMP_MIN_REG(sattr->index); 512 break; 513 case MAX: 514 reg = TEMP_MAX_REG(sattr->index); 515 break; 516 case OFFSET: 517 reg = TEMP_OFFSET_REG(sattr->index); 518 break; 519 case AUTOMIN: 520 reg = TEMP_TMIN_REG(sattr->index); 521 break; 522 case THERM: 523 reg = TEMP_THERM_REG(sattr->index); 524 break; 525 case HYSTERSIS: 526 if (sattr->index != 2) 527 reg = REG_REMOTE1_HYSTERSIS; 528 else 529 reg = REG_REMOTE2_HYSTERSIS; 530 531 break; 532 } 533 534 i2c_smbus_write_byte_data(client, reg, out); 535 536 mutex_unlock(&data->lock); 537 return count; 538 } 539 540 /* Assuming CONFIG6[SLOW] is 0 */ 541 static const int ad7475_st_map[] = { 542 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800, 543 }; 544 545 static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr, 546 char *buf) 547 { 548 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 549 struct adt7475_data *data = dev_get_drvdata(dev); 550 long val; 551 552 switch (sattr->index) { 553 case 0: 554 val = data->enh_acoustics[0] & 0xf; 555 break; 556 case 1: 557 val = (data->enh_acoustics[1] >> 4) & 0xf; 558 break; 559 case 2: 560 default: 561 val = data->enh_acoustics[1] & 0xf; 562 break; 563 } 564 565 if (val & 0x8) 566 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]); 567 else 568 return sprintf(buf, "0\n"); 569 } 570 571 static ssize_t temp_st_store(struct device *dev, 572 struct device_attribute *attr, const char *buf, 573 size_t count) 574 { 575 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 576 struct adt7475_data *data = dev_get_drvdata(dev); 577 struct i2c_client *client = data->client; 578 unsigned char reg; 579 int shift, idx; 580 ulong val; 581 582 if (kstrtoul(buf, 10, &val)) 583 return -EINVAL; 584 585 switch (sattr->index) { 586 case 0: 587 reg = REG_ENHANCE_ACOUSTICS1; 588 shift = 0; 589 idx = 0; 590 break; 591 case 1: 592 reg = REG_ENHANCE_ACOUSTICS2; 593 shift = 0; 594 idx = 1; 595 break; 596 case 2: 597 default: 598 reg = REG_ENHANCE_ACOUSTICS2; 599 shift = 4; 600 idx = 1; 601 break; 602 } 603 604 if (val > 0) { 605 val = find_closest_descending(val, ad7475_st_map, 606 ARRAY_SIZE(ad7475_st_map)); 607 val |= 0x8; 608 } 609 610 mutex_lock(&data->lock); 611 612 data->enh_acoustics[idx] &= ~(0xf << shift); 613 data->enh_acoustics[idx] |= (val << shift); 614 615 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]); 616 617 mutex_unlock(&data->lock); 618 619 return count; 620 } 621 622 /* 623 * Table of autorange values - the user will write the value in millidegrees, 624 * and we'll convert it 625 */ 626 static const int autorange_table[] = { 627 2000, 2500, 3330, 4000, 5000, 6670, 8000, 628 10000, 13330, 16000, 20000, 26670, 32000, 40000, 629 53330, 80000 630 }; 631 632 static ssize_t point2_show(struct device *dev, struct device_attribute *attr, 633 char *buf) 634 { 635 struct adt7475_data *data = adt7475_update_device(dev); 636 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 637 int out, val; 638 639 if (IS_ERR(data)) 640 return PTR_ERR(data); 641 642 mutex_lock(&data->lock); 643 out = (data->range[sattr->index] >> 4) & 0x0F; 644 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 645 mutex_unlock(&data->lock); 646 647 return sprintf(buf, "%d\n", val + autorange_table[out]); 648 } 649 650 static ssize_t point2_store(struct device *dev, struct device_attribute *attr, 651 const char *buf, size_t count) 652 { 653 struct adt7475_data *data = dev_get_drvdata(dev); 654 struct i2c_client *client = data->client; 655 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 656 int temp; 657 long val; 658 659 if (kstrtol(buf, 10, &val)) 660 return -EINVAL; 661 662 mutex_lock(&data->lock); 663 664 /* Get a fresh copy of the needed registers */ 665 data->config5 = adt7475_read(REG_CONFIG5); 666 data->temp[AUTOMIN][sattr->index] = 667 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2; 668 data->range[sattr->index] = 669 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 670 671 /* 672 * The user will write an absolute value, so subtract the start point 673 * to figure the range 674 */ 675 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 676 val = clamp_val(val, temp + autorange_table[0], 677 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]); 678 val -= temp; 679 680 /* Find the nearest table entry to what the user wrote */ 681 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table)); 682 683 data->range[sattr->index] &= ~0xF0; 684 data->range[sattr->index] |= val << 4; 685 686 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 687 data->range[sattr->index]); 688 689 mutex_unlock(&data->lock); 690 return count; 691 } 692 693 static ssize_t tach_show(struct device *dev, struct device_attribute *attr, 694 char *buf) 695 { 696 struct adt7475_data *data = adt7475_update_device(dev); 697 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 698 int out; 699 700 if (IS_ERR(data)) 701 return PTR_ERR(data); 702 703 if (sattr->nr == ALARM) 704 out = (data->alarms >> (sattr->index + 10)) & 1; 705 else 706 out = tach2rpm(data->tach[sattr->nr][sattr->index]); 707 708 return sprintf(buf, "%d\n", out); 709 } 710 711 static ssize_t tach_store(struct device *dev, struct device_attribute *attr, 712 const char *buf, size_t count) 713 { 714 715 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 716 struct adt7475_data *data = dev_get_drvdata(dev); 717 struct i2c_client *client = data->client; 718 unsigned long val; 719 720 if (kstrtoul(buf, 10, &val)) 721 return -EINVAL; 722 723 mutex_lock(&data->lock); 724 725 data->tach[MIN][sattr->index] = rpm2tach(val); 726 727 adt7475_write_word(client, TACH_MIN_REG(sattr->index), 728 data->tach[MIN][sattr->index]); 729 730 mutex_unlock(&data->lock); 731 return count; 732 } 733 734 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, 735 char *buf) 736 { 737 struct adt7475_data *data = adt7475_update_device(dev); 738 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 739 740 if (IS_ERR(data)) 741 return PTR_ERR(data); 742 743 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]); 744 } 745 746 static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr, 747 char *buf) 748 { 749 struct adt7475_data *data = adt7475_update_device(dev); 750 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 751 752 if (IS_ERR(data)) 753 return PTR_ERR(data); 754 755 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]); 756 } 757 758 static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr, 759 char *buf) 760 { 761 struct adt7475_data *data = adt7475_update_device(dev); 762 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 763 764 if (IS_ERR(data)) 765 return PTR_ERR(data); 766 767 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]); 768 } 769 770 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, 771 const char *buf, size_t count) 772 { 773 774 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 775 struct adt7475_data *data = dev_get_drvdata(dev); 776 struct i2c_client *client = data->client; 777 unsigned char reg = 0; 778 long val; 779 780 if (kstrtol(buf, 10, &val)) 781 return -EINVAL; 782 783 mutex_lock(&data->lock); 784 785 switch (sattr->nr) { 786 case INPUT: 787 /* Get a fresh value for CONTROL */ 788 data->pwm[CONTROL][sattr->index] = 789 adt7475_read(PWM_CONFIG_REG(sattr->index)); 790 791 /* 792 * If we are not in manual mode, then we shouldn't allow 793 * the user to set the pwm speed 794 */ 795 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) { 796 mutex_unlock(&data->lock); 797 return count; 798 } 799 800 reg = PWM_REG(sattr->index); 801 break; 802 803 case MIN: 804 reg = PWM_MIN_REG(sattr->index); 805 break; 806 807 case MAX: 808 reg = PWM_MAX_REG(sattr->index); 809 break; 810 } 811 812 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF); 813 i2c_smbus_write_byte_data(client, reg, 814 data->pwm[sattr->nr][sattr->index]); 815 mutex_unlock(&data->lock); 816 817 return count; 818 } 819 820 static ssize_t stall_disable_show(struct device *dev, 821 struct device_attribute *attr, char *buf) 822 { 823 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 824 struct adt7475_data *data = dev_get_drvdata(dev); 825 826 u8 mask = BIT(5 + sattr->index); 827 828 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask)); 829 } 830 831 static ssize_t stall_disable_store(struct device *dev, 832 struct device_attribute *attr, 833 const char *buf, size_t count) 834 { 835 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 836 struct adt7475_data *data = dev_get_drvdata(dev); 837 struct i2c_client *client = data->client; 838 long val; 839 u8 mask = BIT(5 + sattr->index); 840 841 if (kstrtol(buf, 10, &val)) 842 return -EINVAL; 843 844 mutex_lock(&data->lock); 845 846 data->enh_acoustics[0] &= ~mask; 847 if (val) 848 data->enh_acoustics[0] |= mask; 849 850 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1, 851 data->enh_acoustics[0]); 852 853 mutex_unlock(&data->lock); 854 855 return count; 856 } 857 858 /* Called by set_pwmctrl and set_pwmchan */ 859 860 static int hw_set_pwm(struct i2c_client *client, int index, 861 unsigned int pwmctl, unsigned int pwmchan) 862 { 863 struct adt7475_data *data = i2c_get_clientdata(client); 864 long val = 0; 865 866 switch (pwmctl) { 867 case 0: 868 val = 0x03; /* Run at full speed */ 869 break; 870 case 1: 871 val = 0x07; /* Manual mode */ 872 break; 873 case 2: 874 switch (pwmchan) { 875 case 1: 876 /* Remote1 controls PWM */ 877 val = 0x00; 878 break; 879 case 2: 880 /* local controls PWM */ 881 val = 0x01; 882 break; 883 case 4: 884 /* remote2 controls PWM */ 885 val = 0x02; 886 break; 887 case 6: 888 /* local/remote2 control PWM */ 889 val = 0x05; 890 break; 891 case 7: 892 /* All three control PWM */ 893 val = 0x06; 894 break; 895 default: 896 return -EINVAL; 897 } 898 break; 899 default: 900 return -EINVAL; 901 } 902 903 data->pwmctl[index] = pwmctl; 904 data->pwmchan[index] = pwmchan; 905 906 data->pwm[CONTROL][index] &= ~0xE0; 907 data->pwm[CONTROL][index] |= (val & 7) << 5; 908 909 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 910 data->pwm[CONTROL][index]); 911 912 return 0; 913 } 914 915 static ssize_t pwmchan_store(struct device *dev, 916 struct device_attribute *attr, const char *buf, 917 size_t count) 918 { 919 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 920 struct adt7475_data *data = dev_get_drvdata(dev); 921 struct i2c_client *client = data->client; 922 int r; 923 long val; 924 925 if (kstrtol(buf, 10, &val)) 926 return -EINVAL; 927 928 mutex_lock(&data->lock); 929 /* Read Modify Write PWM values */ 930 adt7475_read_pwm(client, sattr->index); 931 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val); 932 if (r) 933 count = r; 934 mutex_unlock(&data->lock); 935 936 return count; 937 } 938 939 static ssize_t pwmctrl_store(struct device *dev, 940 struct device_attribute *attr, const char *buf, 941 size_t count) 942 { 943 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 944 struct adt7475_data *data = dev_get_drvdata(dev); 945 struct i2c_client *client = data->client; 946 int r; 947 long val; 948 949 if (kstrtol(buf, 10, &val)) 950 return -EINVAL; 951 952 mutex_lock(&data->lock); 953 /* Read Modify Write PWM values */ 954 adt7475_read_pwm(client, sattr->index); 955 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]); 956 if (r) 957 count = r; 958 mutex_unlock(&data->lock); 959 960 return count; 961 } 962 963 /* List of frequencies for the PWM */ 964 static const int pwmfreq_table[] = { 965 11, 14, 22, 29, 35, 44, 58, 88, 22500 966 }; 967 968 static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr, 969 char *buf) 970 { 971 struct adt7475_data *data = adt7475_update_device(dev); 972 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 973 int idx; 974 975 if (IS_ERR(data)) 976 return PTR_ERR(data); 977 idx = clamp_val(data->range[sattr->index] & 0xf, 0, 978 ARRAY_SIZE(pwmfreq_table) - 1); 979 980 return sprintf(buf, "%d\n", pwmfreq_table[idx]); 981 } 982 983 static ssize_t pwmfreq_store(struct device *dev, 984 struct device_attribute *attr, const char *buf, 985 size_t count) 986 { 987 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 988 struct adt7475_data *data = dev_get_drvdata(dev); 989 struct i2c_client *client = data->client; 990 int out; 991 long val; 992 993 if (kstrtol(buf, 10, &val)) 994 return -EINVAL; 995 996 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table)); 997 998 mutex_lock(&data->lock); 999 1000 data->range[sattr->index] = 1001 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 1002 data->range[sattr->index] &= ~0xf; 1003 data->range[sattr->index] |= out; 1004 1005 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 1006 data->range[sattr->index]); 1007 1008 mutex_unlock(&data->lock); 1009 return count; 1010 } 1011 1012 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev, 1013 struct device_attribute *devattr, 1014 char *buf) 1015 { 1016 struct adt7475_data *data = adt7475_update_device(dev); 1017 1018 if (IS_ERR(data)) 1019 return PTR_ERR(data); 1020 1021 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY)); 1022 } 1023 1024 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev, 1025 struct device_attribute *devattr, 1026 const char *buf, size_t count) 1027 { 1028 struct adt7475_data *data = dev_get_drvdata(dev); 1029 struct i2c_client *client = data->client; 1030 long val; 1031 1032 if (kstrtol(buf, 10, &val)) 1033 return -EINVAL; 1034 if (val != 0 && val != 1) 1035 return -EINVAL; 1036 1037 mutex_lock(&data->lock); 1038 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4); 1039 if (val) 1040 data->config4 |= CONFIG4_MAXDUTY; 1041 else 1042 data->config4 &= ~CONFIG4_MAXDUTY; 1043 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4); 1044 mutex_unlock(&data->lock); 1045 1046 return count; 1047 } 1048 1049 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr, 1050 char *buf) 1051 { 1052 struct adt7475_data *data = dev_get_drvdata(dev); 1053 return sprintf(buf, "%d\n", (int)data->vrm); 1054 } 1055 1056 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr, 1057 const char *buf, size_t count) 1058 { 1059 struct adt7475_data *data = dev_get_drvdata(dev); 1060 long val; 1061 1062 if (kstrtol(buf, 10, &val)) 1063 return -EINVAL; 1064 if (val < 0 || val > 255) 1065 return -EINVAL; 1066 data->vrm = val; 1067 1068 return count; 1069 } 1070 1071 static ssize_t cpu0_vid_show(struct device *dev, 1072 struct device_attribute *devattr, char *buf) 1073 { 1074 struct adt7475_data *data = adt7475_update_device(dev); 1075 1076 if (IS_ERR(data)) 1077 return PTR_ERR(data); 1078 1079 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 1080 } 1081 1082 static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0); 1083 static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0); 1084 static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0); 1085 static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0); 1086 static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1); 1087 static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1); 1088 static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1); 1089 static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1); 1090 static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2); 1091 static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2); 1092 static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2); 1093 static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2); 1094 static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3); 1095 static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3); 1096 static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3); 1097 static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3); 1098 static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4); 1099 static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4); 1100 static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4); 1101 static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8); 1102 static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5); 1103 static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5); 1104 static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5); 1105 static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31); 1106 static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0); 1107 static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0); 1108 static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0); 1109 static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0); 1110 static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0); 1111 static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0); 1112 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0); 1113 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0); 1114 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0); 1115 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0); 1116 static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0); 1117 static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1); 1118 static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1); 1119 static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1); 1120 static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1); 1121 static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1); 1122 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1); 1123 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1); 1124 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1); 1125 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1); 1126 static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1); 1127 static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2); 1128 static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2); 1129 static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2); 1130 static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2); 1131 static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2); 1132 static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2); 1133 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2); 1134 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2); 1135 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2); 1136 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2); 1137 static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2); 1138 static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0); 1139 static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0); 1140 static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0); 1141 static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1); 1142 static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1); 1143 static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1); 1144 static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2); 1145 static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2); 1146 static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2); 1147 static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3); 1148 static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3); 1149 static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3); 1150 static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0); 1151 static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0); 1152 static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0); 1153 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0); 1154 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0); 1155 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0); 1156 static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0); 1157 static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1); 1158 static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1); 1159 static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1); 1160 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1); 1161 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1); 1162 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1); 1163 static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1); 1164 static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2); 1165 static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2); 1166 static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2); 1167 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2); 1168 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2); 1169 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2); 1170 static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2); 1171 1172 /* Non-standard name, might need revisiting */ 1173 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit); 1174 1175 static DEVICE_ATTR_RW(vrm); 1176 static DEVICE_ATTR_RO(cpu0_vid); 1177 1178 static struct attribute *adt7475_attrs[] = { 1179 &sensor_dev_attr_in1_input.dev_attr.attr, 1180 &sensor_dev_attr_in1_max.dev_attr.attr, 1181 &sensor_dev_attr_in1_min.dev_attr.attr, 1182 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1183 &sensor_dev_attr_in2_input.dev_attr.attr, 1184 &sensor_dev_attr_in2_max.dev_attr.attr, 1185 &sensor_dev_attr_in2_min.dev_attr.attr, 1186 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1187 &sensor_dev_attr_temp1_input.dev_attr.attr, 1188 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1189 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1190 &sensor_dev_attr_temp1_max.dev_attr.attr, 1191 &sensor_dev_attr_temp1_min.dev_attr.attr, 1192 &sensor_dev_attr_temp1_offset.dev_attr.attr, 1193 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, 1194 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, 1195 &sensor_dev_attr_temp1_crit.dev_attr.attr, 1196 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, 1197 &sensor_dev_attr_temp1_smoothing.dev_attr.attr, 1198 &sensor_dev_attr_temp2_input.dev_attr.attr, 1199 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1200 &sensor_dev_attr_temp2_max.dev_attr.attr, 1201 &sensor_dev_attr_temp2_min.dev_attr.attr, 1202 &sensor_dev_attr_temp2_offset.dev_attr.attr, 1203 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, 1204 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, 1205 &sensor_dev_attr_temp2_crit.dev_attr.attr, 1206 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr, 1207 &sensor_dev_attr_temp2_smoothing.dev_attr.attr, 1208 &sensor_dev_attr_temp3_input.dev_attr.attr, 1209 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1210 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1211 &sensor_dev_attr_temp3_max.dev_attr.attr, 1212 &sensor_dev_attr_temp3_min.dev_attr.attr, 1213 &sensor_dev_attr_temp3_offset.dev_attr.attr, 1214 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr, 1215 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr, 1216 &sensor_dev_attr_temp3_crit.dev_attr.attr, 1217 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr, 1218 &sensor_dev_attr_temp3_smoothing.dev_attr.attr, 1219 &sensor_dev_attr_fan1_input.dev_attr.attr, 1220 &sensor_dev_attr_fan1_min.dev_attr.attr, 1221 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1222 &sensor_dev_attr_fan2_input.dev_attr.attr, 1223 &sensor_dev_attr_fan2_min.dev_attr.attr, 1224 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1225 &sensor_dev_attr_fan3_input.dev_attr.attr, 1226 &sensor_dev_attr_fan3_min.dev_attr.attr, 1227 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1228 &sensor_dev_attr_pwm1.dev_attr.attr, 1229 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 1230 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1231 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1232 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1233 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1234 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr, 1235 &sensor_dev_attr_pwm3.dev_attr.attr, 1236 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1237 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1238 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1239 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1240 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1241 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr, 1242 &dev_attr_pwm_use_point2_pwm_at_crit.attr, 1243 NULL, 1244 }; 1245 1246 static struct attribute *fan4_attrs[] = { 1247 &sensor_dev_attr_fan4_input.dev_attr.attr, 1248 &sensor_dev_attr_fan4_min.dev_attr.attr, 1249 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1250 NULL 1251 }; 1252 1253 static struct attribute *pwm2_attrs[] = { 1254 &sensor_dev_attr_pwm2.dev_attr.attr, 1255 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1256 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1257 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1258 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1259 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1260 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr, 1261 NULL 1262 }; 1263 1264 static struct attribute *in0_attrs[] = { 1265 &sensor_dev_attr_in0_input.dev_attr.attr, 1266 &sensor_dev_attr_in0_max.dev_attr.attr, 1267 &sensor_dev_attr_in0_min.dev_attr.attr, 1268 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1269 NULL 1270 }; 1271 1272 static struct attribute *in3_attrs[] = { 1273 &sensor_dev_attr_in3_input.dev_attr.attr, 1274 &sensor_dev_attr_in3_max.dev_attr.attr, 1275 &sensor_dev_attr_in3_min.dev_attr.attr, 1276 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1277 NULL 1278 }; 1279 1280 static struct attribute *in4_attrs[] = { 1281 &sensor_dev_attr_in4_input.dev_attr.attr, 1282 &sensor_dev_attr_in4_max.dev_attr.attr, 1283 &sensor_dev_attr_in4_min.dev_attr.attr, 1284 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1285 NULL 1286 }; 1287 1288 static struct attribute *in5_attrs[] = { 1289 &sensor_dev_attr_in5_input.dev_attr.attr, 1290 &sensor_dev_attr_in5_max.dev_attr.attr, 1291 &sensor_dev_attr_in5_min.dev_attr.attr, 1292 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1293 NULL 1294 }; 1295 1296 static struct attribute *vid_attrs[] = { 1297 &dev_attr_cpu0_vid.attr, 1298 &dev_attr_vrm.attr, 1299 NULL 1300 }; 1301 1302 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs }; 1303 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs }; 1304 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs }; 1305 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs }; 1306 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs }; 1307 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs }; 1308 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs }; 1309 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs }; 1310 1311 static int adt7475_detect(struct i2c_client *client, 1312 struct i2c_board_info *info) 1313 { 1314 struct i2c_adapter *adapter = client->adapter; 1315 int vendid, devid, devid2; 1316 const char *name; 1317 1318 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1319 return -ENODEV; 1320 1321 vendid = adt7475_read(REG_VENDID); 1322 devid2 = adt7475_read(REG_DEVID2); 1323 if (vendid != 0x41 || /* Analog Devices */ 1324 (devid2 & 0xf8) != 0x68) 1325 return -ENODEV; 1326 1327 devid = adt7475_read(REG_DEVID); 1328 if (devid == 0x73) 1329 name = "adt7473"; 1330 else if (devid == 0x75 && client->addr == 0x2e) 1331 name = "adt7475"; 1332 else if (devid == 0x76) 1333 name = "adt7476"; 1334 else if ((devid2 & 0xfc) == 0x6c) 1335 name = "adt7490"; 1336 else { 1337 dev_dbg(&adapter->dev, 1338 "Couldn't detect an ADT7473/75/76/90 part at " 1339 "0x%02x\n", (unsigned int)client->addr); 1340 return -ENODEV; 1341 } 1342 1343 strlcpy(info->type, name, I2C_NAME_SIZE); 1344 1345 return 0; 1346 } 1347 1348 static int adt7475_update_limits(struct i2c_client *client) 1349 { 1350 struct adt7475_data *data = i2c_get_clientdata(client); 1351 int i; 1352 int ret; 1353 1354 ret = adt7475_read(REG_CONFIG4); 1355 if (ret < 0) 1356 return ret; 1357 data->config4 = ret; 1358 1359 ret = adt7475_read(REG_CONFIG5); 1360 if (ret < 0) 1361 return ret; 1362 data->config5 = ret; 1363 1364 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1365 if (!(data->has_voltage & (1 << i))) 1366 continue; 1367 /* Adjust values so they match the input precision */ 1368 ret = adt7475_read(VOLTAGE_MIN_REG(i)); 1369 if (ret < 0) 1370 return ret; 1371 data->voltage[MIN][i] = ret << 2; 1372 1373 ret = adt7475_read(VOLTAGE_MAX_REG(i)); 1374 if (ret < 0) 1375 return ret; 1376 data->voltage[MAX][i] = ret << 2; 1377 } 1378 1379 if (data->has_voltage & (1 << 5)) { 1380 ret = adt7475_read(REG_VTT_MIN); 1381 if (ret < 0) 1382 return ret; 1383 data->voltage[MIN][5] = ret << 2; 1384 1385 ret = adt7475_read(REG_VTT_MAX); 1386 if (ret < 0) 1387 return ret; 1388 data->voltage[MAX][5] = ret << 2; 1389 } 1390 1391 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 1392 /* Adjust values so they match the input precision */ 1393 ret = adt7475_read(TEMP_MIN_REG(i)); 1394 if (ret < 0) 1395 return ret; 1396 data->temp[MIN][i] = ret << 2; 1397 1398 ret = adt7475_read(TEMP_MAX_REG(i)); 1399 if (ret < 0) 1400 return ret; 1401 data->temp[MAX][i] = ret << 2; 1402 1403 ret = adt7475_read(TEMP_TMIN_REG(i)); 1404 if (ret < 0) 1405 return ret; 1406 data->temp[AUTOMIN][i] = ret << 2; 1407 1408 ret = adt7475_read(TEMP_THERM_REG(i)); 1409 if (ret < 0) 1410 return ret; 1411 data->temp[THERM][i] = ret << 2; 1412 1413 ret = adt7475_read(TEMP_OFFSET_REG(i)); 1414 if (ret < 0) 1415 return ret; 1416 data->temp[OFFSET][i] = ret; 1417 } 1418 adt7475_read_hystersis(client); 1419 1420 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 1421 if (i == 3 && !data->has_fan4) 1422 continue; 1423 ret = adt7475_read_word(client, TACH_MIN_REG(i)); 1424 if (ret < 0) 1425 return ret; 1426 data->tach[MIN][i] = ret; 1427 } 1428 1429 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1430 if (i == 1 && !data->has_pwm2) 1431 continue; 1432 ret = adt7475_read(PWM_MAX_REG(i)); 1433 if (ret < 0) 1434 return ret; 1435 data->pwm[MAX][i] = ret; 1436 1437 ret = adt7475_read(PWM_MIN_REG(i)); 1438 if (ret < 0) 1439 return ret; 1440 data->pwm[MIN][i] = ret; 1441 /* Set the channel and control information */ 1442 adt7475_read_pwm(client, i); 1443 } 1444 1445 ret = adt7475_read(TEMP_TRANGE_REG(0)); 1446 if (ret < 0) 1447 return ret; 1448 data->range[0] = ret; 1449 1450 ret = adt7475_read(TEMP_TRANGE_REG(1)); 1451 if (ret < 0) 1452 return ret; 1453 data->range[1] = ret; 1454 1455 ret = adt7475_read(TEMP_TRANGE_REG(2)); 1456 if (ret < 0) 1457 return ret; 1458 data->range[2] = ret; 1459 1460 return 0; 1461 } 1462 1463 static int set_property_bit(const struct i2c_client *client, char *property, 1464 u8 *config, u8 bit_index) 1465 { 1466 u32 prop_value = 0; 1467 int ret = of_property_read_u32(client->dev.of_node, property, 1468 &prop_value); 1469 1470 if (!ret) { 1471 if (prop_value) 1472 *config |= (1 << bit_index); 1473 else 1474 *config &= ~(1 << bit_index); 1475 } 1476 1477 return ret; 1478 } 1479 1480 static int load_attenuators(const struct i2c_client *client, int chip, 1481 struct adt7475_data *data) 1482 { 1483 int ret; 1484 1485 if (chip == adt7476 || chip == adt7490) { 1486 set_property_bit(client, "adi,bypass-attenuator-in0", 1487 &data->config4, 4); 1488 set_property_bit(client, "adi,bypass-attenuator-in1", 1489 &data->config4, 5); 1490 set_property_bit(client, "adi,bypass-attenuator-in3", 1491 &data->config4, 6); 1492 set_property_bit(client, "adi,bypass-attenuator-in4", 1493 &data->config4, 7); 1494 1495 ret = i2c_smbus_write_byte_data(client, REG_CONFIG4, 1496 data->config4); 1497 if (ret < 0) 1498 return ret; 1499 } else if (chip == adt7473 || chip == adt7475) { 1500 set_property_bit(client, "adi,bypass-attenuator-in1", 1501 &data->config2, 5); 1502 1503 ret = i2c_smbus_write_byte_data(client, REG_CONFIG2, 1504 data->config2); 1505 if (ret < 0) 1506 return ret; 1507 } 1508 1509 return 0; 1510 } 1511 1512 static int adt7475_probe(struct i2c_client *client, 1513 const struct i2c_device_id *id) 1514 { 1515 enum chips chip; 1516 static const char * const names[] = { 1517 [adt7473] = "ADT7473", 1518 [adt7475] = "ADT7475", 1519 [adt7476] = "ADT7476", 1520 [adt7490] = "ADT7490", 1521 }; 1522 1523 struct adt7475_data *data; 1524 struct device *hwmon_dev; 1525 int i, ret = 0, revision, group_num = 0; 1526 u8 config3; 1527 1528 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); 1529 if (data == NULL) 1530 return -ENOMEM; 1531 1532 mutex_init(&data->lock); 1533 data->client = client; 1534 i2c_set_clientdata(client, data); 1535 1536 if (client->dev.of_node) 1537 chip = (enum chips)of_device_get_match_data(&client->dev); 1538 else 1539 chip = id->driver_data; 1540 1541 /* Initialize device-specific values */ 1542 switch (chip) { 1543 case adt7476: 1544 data->has_voltage = 0x0e; /* in1 to in3 */ 1545 revision = adt7475_read(REG_DEVID2) & 0x07; 1546 break; 1547 case adt7490: 1548 data->has_voltage = 0x3e; /* in1 to in5 */ 1549 revision = adt7475_read(REG_DEVID2) & 0x03; 1550 if (revision == 0x03) 1551 revision += adt7475_read(REG_DEVREV2); 1552 break; 1553 default: 1554 data->has_voltage = 0x06; /* in1, in2 */ 1555 revision = adt7475_read(REG_DEVID2) & 0x07; 1556 } 1557 1558 config3 = adt7475_read(REG_CONFIG3); 1559 /* Pin PWM2 may alternatively be used for ALERT output */ 1560 if (!(config3 & CONFIG3_SMBALERT)) 1561 data->has_pwm2 = 1; 1562 /* Meaning of this bit is inverted for the ADT7473-1 */ 1563 if (id->driver_data == adt7473 && revision >= 1) 1564 data->has_pwm2 = !data->has_pwm2; 1565 1566 data->config4 = adt7475_read(REG_CONFIG4); 1567 /* Pin TACH4 may alternatively be used for THERM */ 1568 if ((data->config4 & CONFIG4_PINFUNC) == 0x0) 1569 data->has_fan4 = 1; 1570 1571 /* 1572 * THERM configuration is more complex on the ADT7476 and ADT7490, 1573 * because 2 different pins (TACH4 and +2.5 Vin) can be used for 1574 * this function 1575 */ 1576 if (id->driver_data == adt7490) { 1577 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 && 1578 !(config3 & CONFIG3_THERM)) 1579 data->has_fan4 = 1; 1580 } 1581 if (id->driver_data == adt7476 || id->driver_data == adt7490) { 1582 if (!(config3 & CONFIG3_THERM) || 1583 (data->config4 & CONFIG4_PINFUNC) == 0x1) 1584 data->has_voltage |= (1 << 0); /* in0 */ 1585 } 1586 1587 /* 1588 * On the ADT7476, the +12V input pin may instead be used as VID5, 1589 * and VID pins may alternatively be used as GPIO 1590 */ 1591 if (id->driver_data == adt7476) { 1592 u8 vid = adt7475_read(REG_VID); 1593 if (!(vid & VID_VIDSEL)) 1594 data->has_voltage |= (1 << 4); /* in4 */ 1595 1596 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO); 1597 } 1598 1599 /* Voltage attenuators can be bypassed, globally or individually */ 1600 data->config2 = adt7475_read(REG_CONFIG2); 1601 ret = load_attenuators(client, chip, data); 1602 if (ret) 1603 dev_warn(&client->dev, "Error configuring attenuator bypass\n"); 1604 1605 if (data->config2 & CONFIG2_ATTN) { 1606 data->bypass_attn = (0x3 << 3) | 0x3; 1607 } else { 1608 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) | 1609 ((data->config4 & CONFIG4_ATTN_IN43) >> 3); 1610 } 1611 data->bypass_attn &= data->has_voltage; 1612 1613 /* 1614 * Call adt7475_read_pwm for all pwm's as this will reprogram any 1615 * pwm's which are disabled to manual mode with 0% duty cycle 1616 */ 1617 for (i = 0; i < ADT7475_PWM_COUNT; i++) 1618 adt7475_read_pwm(client, i); 1619 1620 /* Start monitoring */ 1621 switch (chip) { 1622 case adt7475: 1623 case adt7476: 1624 i2c_smbus_write_byte_data(client, REG_CONFIG1, 1625 adt7475_read(REG_CONFIG1) | 0x01); 1626 break; 1627 default: 1628 break; 1629 } 1630 1631 data->groups[group_num++] = &adt7475_attr_group; 1632 1633 /* Features that can be disabled individually */ 1634 if (data->has_fan4) { 1635 data->groups[group_num++] = &fan4_attr_group; 1636 } 1637 if (data->has_pwm2) { 1638 data->groups[group_num++] = &pwm2_attr_group; 1639 } 1640 if (data->has_voltage & (1 << 0)) { 1641 data->groups[group_num++] = &in0_attr_group; 1642 } 1643 if (data->has_voltage & (1 << 3)) { 1644 data->groups[group_num++] = &in3_attr_group; 1645 } 1646 if (data->has_voltage & (1 << 4)) { 1647 data->groups[group_num++] = &in4_attr_group; 1648 } 1649 if (data->has_voltage & (1 << 5)) { 1650 data->groups[group_num++] = &in5_attr_group; 1651 } 1652 if (data->has_vid) { 1653 data->vrm = vid_which_vrm(); 1654 data->groups[group_num] = &vid_attr_group; 1655 } 1656 1657 /* register device with all the acquired attributes */ 1658 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev, 1659 client->name, data, 1660 data->groups); 1661 1662 if (IS_ERR(hwmon_dev)) { 1663 ret = PTR_ERR(hwmon_dev); 1664 return ret; 1665 } 1666 1667 dev_info(&client->dev, "%s device, revision %d\n", 1668 names[id->driver_data], revision); 1669 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2) 1670 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n", 1671 (data->has_voltage & (1 << 0)) ? " in0" : "", 1672 (data->has_voltage & (1 << 4)) ? " in4" : "", 1673 data->has_fan4 ? " fan4" : "", 1674 data->has_pwm2 ? " pwm2" : "", 1675 data->has_vid ? " vid" : ""); 1676 if (data->bypass_attn) 1677 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n", 1678 (data->bypass_attn & (1 << 0)) ? " in0" : "", 1679 (data->bypass_attn & (1 << 1)) ? " in1" : "", 1680 (data->bypass_attn & (1 << 3)) ? " in3" : "", 1681 (data->bypass_attn & (1 << 4)) ? " in4" : ""); 1682 1683 /* Limits and settings, should never change update more than once */ 1684 ret = adt7475_update_limits(client); 1685 if (ret) 1686 return ret; 1687 1688 return 0; 1689 } 1690 1691 static struct i2c_driver adt7475_driver = { 1692 .class = I2C_CLASS_HWMON, 1693 .driver = { 1694 .name = "adt7475", 1695 .of_match_table = of_match_ptr(adt7475_of_match), 1696 }, 1697 .probe = adt7475_probe, 1698 .id_table = adt7475_id, 1699 .detect = adt7475_detect, 1700 .address_list = normal_i2c, 1701 }; 1702 1703 static void adt7475_read_hystersis(struct i2c_client *client) 1704 { 1705 struct adt7475_data *data = i2c_get_clientdata(client); 1706 1707 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS); 1708 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0]; 1709 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS); 1710 } 1711 1712 static void adt7475_read_pwm(struct i2c_client *client, int index) 1713 { 1714 struct adt7475_data *data = i2c_get_clientdata(client); 1715 unsigned int v; 1716 1717 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index)); 1718 1719 /* 1720 * Figure out the internal value for pwmctrl and pwmchan 1721 * based on the current settings 1722 */ 1723 v = (data->pwm[CONTROL][index] >> 5) & 7; 1724 1725 if (v == 3) 1726 data->pwmctl[index] = 0; 1727 else if (v == 7) 1728 data->pwmctl[index] = 1; 1729 else if (v == 4) { 1730 /* 1731 * The fan is disabled - we don't want to 1732 * support that, so change to manual mode and 1733 * set the duty cycle to 0 instead 1734 */ 1735 data->pwm[INPUT][index] = 0; 1736 data->pwm[CONTROL][index] &= ~0xE0; 1737 data->pwm[CONTROL][index] |= (7 << 5); 1738 1739 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 1740 data->pwm[INPUT][index]); 1741 1742 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 1743 data->pwm[CONTROL][index]); 1744 1745 data->pwmctl[index] = 1; 1746 } else { 1747 data->pwmctl[index] = 2; 1748 1749 switch (v) { 1750 case 0: 1751 data->pwmchan[index] = 1; 1752 break; 1753 case 1: 1754 data->pwmchan[index] = 2; 1755 break; 1756 case 2: 1757 data->pwmchan[index] = 4; 1758 break; 1759 case 5: 1760 data->pwmchan[index] = 6; 1761 break; 1762 case 6: 1763 data->pwmchan[index] = 7; 1764 break; 1765 } 1766 } 1767 } 1768 1769 static int adt7475_update_measure(struct device *dev) 1770 { 1771 struct adt7475_data *data = dev_get_drvdata(dev); 1772 struct i2c_client *client = data->client; 1773 u16 ext; 1774 int i; 1775 int ret; 1776 1777 ret = adt7475_read(REG_STATUS2); 1778 if (ret < 0) 1779 return ret; 1780 data->alarms = ret << 8; 1781 1782 ret = adt7475_read(REG_STATUS1); 1783 if (ret < 0) 1784 return ret; 1785 data->alarms |= ret; 1786 1787 ret = adt7475_read(REG_EXTEND2); 1788 if (ret < 0) 1789 return ret; 1790 1791 ext = (ret << 8); 1792 1793 ret = adt7475_read(REG_EXTEND1); 1794 if (ret < 0) 1795 return ret; 1796 1797 ext |= ret; 1798 1799 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1800 if (!(data->has_voltage & (1 << i))) 1801 continue; 1802 ret = adt7475_read(VOLTAGE_REG(i)); 1803 if (ret < 0) 1804 return ret; 1805 data->voltage[INPUT][i] = 1806 (ret << 2) | 1807 ((ext >> (i * 2)) & 3); 1808 } 1809 1810 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 1811 ret = adt7475_read(TEMP_REG(i)); 1812 if (ret < 0) 1813 return ret; 1814 data->temp[INPUT][i] = 1815 (ret << 2) | 1816 ((ext >> ((i + 5) * 2)) & 3); 1817 } 1818 1819 if (data->has_voltage & (1 << 5)) { 1820 ret = adt7475_read(REG_STATUS4); 1821 if (ret < 0) 1822 return ret; 1823 data->alarms |= ret << 24; 1824 1825 ret = adt7475_read(REG_EXTEND3); 1826 if (ret < 0) 1827 return ret; 1828 ext = ret; 1829 1830 ret = adt7475_read(REG_VTT); 1831 if (ret < 0) 1832 return ret; 1833 data->voltage[INPUT][5] = ret << 2 | 1834 ((ext >> 4) & 3); 1835 } 1836 1837 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 1838 if (i == 3 && !data->has_fan4) 1839 continue; 1840 ret = adt7475_read_word(client, TACH_REG(i)); 1841 if (ret < 0) 1842 return ret; 1843 data->tach[INPUT][i] = ret; 1844 } 1845 1846 /* Updated by hw when in auto mode */ 1847 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1848 if (i == 1 && !data->has_pwm2) 1849 continue; 1850 ret = adt7475_read(PWM_REG(i)); 1851 if (ret < 0) 1852 return ret; 1853 data->pwm[INPUT][i] = ret; 1854 } 1855 1856 if (data->has_vid) { 1857 ret = adt7475_read(REG_VID); 1858 if (ret < 0) 1859 return ret; 1860 data->vid = ret & 0x3f; 1861 } 1862 1863 return 0; 1864 } 1865 1866 static struct adt7475_data *adt7475_update_device(struct device *dev) 1867 { 1868 struct adt7475_data *data = dev_get_drvdata(dev); 1869 int ret; 1870 1871 mutex_lock(&data->lock); 1872 1873 /* Measurement values update every 2 seconds */ 1874 if (time_after(jiffies, data->measure_updated + HZ * 2) || 1875 !data->valid) { 1876 ret = adt7475_update_measure(dev); 1877 if (ret) { 1878 data->valid = false; 1879 mutex_unlock(&data->lock); 1880 return ERR_PTR(ret); 1881 } 1882 data->measure_updated = jiffies; 1883 data->valid = true; 1884 } 1885 1886 mutex_unlock(&data->lock); 1887 1888 return data; 1889 } 1890 1891 module_i2c_driver(adt7475_driver); 1892 1893 MODULE_AUTHOR("Advanced Micro Devices, Inc"); 1894 MODULE_DESCRIPTION("adt7475 driver"); 1895 MODULE_LICENSE("GPL"); 1896