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_THERM 0x01 116 #define CONFIG4_SMBALERT 0x02 117 #define CONFIG4_MAXDUTY 0x08 118 #define CONFIG4_ATTN_IN10 0x30 119 #define CONFIG4_ATTN_IN43 0xC0 120 121 #define CONFIG5_TWOSCOMP 0x01 122 #define CONFIG5_TEMPOFFSET 0x02 123 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */ 124 125 /* ADT7475 Settings */ 126 127 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */ 128 #define ADT7475_TEMP_COUNT 3 129 #define ADT7475_TACH_COUNT 4 130 #define ADT7475_PWM_COUNT 3 131 132 /* Macro to read the registers */ 133 134 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg)) 135 136 /* Macros to easily index the registers */ 137 138 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2)) 139 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2)) 140 141 #define PWM_REG(idx) (REG_PWM_BASE + (idx)) 142 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx)) 143 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx)) 144 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx)) 145 146 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx)) 147 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2)) 148 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2)) 149 150 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx)) 151 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2)) 152 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2)) 153 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx)) 154 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx)) 155 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx)) 156 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx)) 157 158 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 159 160 enum chips { adt7473, adt7475, adt7476, adt7490 }; 161 162 static const struct i2c_device_id adt7475_id[] = { 163 { "adt7473", adt7473 }, 164 { "adt7475", adt7475 }, 165 { "adt7476", adt7476 }, 166 { "adt7490", adt7490 }, 167 { } 168 }; 169 MODULE_DEVICE_TABLE(i2c, adt7475_id); 170 171 static const struct of_device_id __maybe_unused adt7475_of_match[] = { 172 { 173 .compatible = "adi,adt7473", 174 .data = (void *)adt7473 175 }, 176 { 177 .compatible = "adi,adt7475", 178 .data = (void *)adt7475 179 }, 180 { 181 .compatible = "adi,adt7476", 182 .data = (void *)adt7476 183 }, 184 { 185 .compatible = "adi,adt7490", 186 .data = (void *)adt7490 187 }, 188 { }, 189 }; 190 MODULE_DEVICE_TABLE(of, adt7475_of_match); 191 192 struct adt7475_data { 193 struct i2c_client *client; 194 struct mutex lock; 195 196 unsigned long measure_updated; 197 bool valid; 198 199 u8 config2; 200 u8 config4; 201 u8 config5; 202 u8 has_voltage; 203 u8 bypass_attn; /* Bypass voltage attenuator */ 204 u8 has_pwm2:1; 205 u8 has_fan4:1; 206 u8 has_vid:1; 207 u32 alarms; 208 u16 voltage[3][6]; 209 u16 temp[7][3]; 210 u16 tach[2][4]; 211 u8 pwm[4][3]; 212 u8 range[3]; 213 u8 pwmctl[3]; 214 u8 pwmchan[3]; 215 u8 enh_acoustics[2]; 216 217 u8 vid; 218 u8 vrm; 219 const struct attribute_group *groups[9]; 220 }; 221 222 static struct i2c_driver adt7475_driver; 223 static struct adt7475_data *adt7475_update_device(struct device *dev); 224 static void adt7475_read_hystersis(struct i2c_client *client); 225 static void adt7475_read_pwm(struct i2c_client *client, int index); 226 227 /* Given a temp value, convert it to register value */ 228 229 static inline u16 temp2reg(struct adt7475_data *data, long val) 230 { 231 u16 ret; 232 233 if (!(data->config5 & CONFIG5_TWOSCOMP)) { 234 val = clamp_val(val, -64000, 191000); 235 ret = (val + 64500) / 1000; 236 } else { 237 val = clamp_val(val, -128000, 127000); 238 if (val < -500) 239 ret = (256500 + val) / 1000; 240 else 241 ret = (val + 500) / 1000; 242 } 243 244 return ret << 2; 245 } 246 247 /* Given a register value, convert it to a real temp value */ 248 249 static inline int reg2temp(struct adt7475_data *data, u16 reg) 250 { 251 if (data->config5 & CONFIG5_TWOSCOMP) { 252 if (reg >= 512) 253 return (reg - 1024) * 250; 254 else 255 return reg * 250; 256 } else 257 return (reg - 256) * 250; 258 } 259 260 static inline int tach2rpm(u16 tach) 261 { 262 if (tach == 0 || tach == 0xFFFF) 263 return 0; 264 265 return (90000 * 60) / tach; 266 } 267 268 static inline u16 rpm2tach(unsigned long rpm) 269 { 270 if (rpm == 0) 271 return 0; 272 273 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF); 274 } 275 276 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */ 277 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = { 278 { 45, 94 }, /* +2.5V */ 279 { 175, 525 }, /* Vccp */ 280 { 68, 71 }, /* Vcc */ 281 { 93, 47 }, /* +5V */ 282 { 120, 20 }, /* +12V */ 283 { 45, 45 }, /* Vtt */ 284 }; 285 286 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn) 287 { 288 const int *r = adt7473_in_scaling[channel]; 289 290 if (bypass_attn & (1 << channel)) 291 return DIV_ROUND_CLOSEST(reg * 2250, 1024); 292 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024); 293 } 294 295 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn) 296 { 297 const int *r = adt7473_in_scaling[channel]; 298 long reg; 299 300 if (bypass_attn & (1 << channel)) 301 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250); 302 else 303 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024, 304 (r[0] + r[1]) * 2250); 305 return clamp_val(reg, 0, 1023) & (0xff << 2); 306 } 307 308 static int adt7475_read_word(struct i2c_client *client, int reg) 309 { 310 int val1, val2; 311 312 val1 = i2c_smbus_read_byte_data(client, reg); 313 if (val1 < 0) 314 return val1; 315 val2 = i2c_smbus_read_byte_data(client, reg + 1); 316 if (val2 < 0) 317 return val2; 318 319 return val1 | (val2 << 8); 320 } 321 322 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val) 323 { 324 i2c_smbus_write_byte_data(client, reg + 1, val >> 8); 325 i2c_smbus_write_byte_data(client, reg, val & 0xFF); 326 } 327 328 static ssize_t voltage_show(struct device *dev, struct device_attribute *attr, 329 char *buf) 330 { 331 struct adt7475_data *data = adt7475_update_device(dev); 332 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 333 unsigned short val; 334 335 if (IS_ERR(data)) 336 return PTR_ERR(data); 337 338 switch (sattr->nr) { 339 case ALARM: 340 return sprintf(buf, "%d\n", 341 (data->alarms >> sattr->index) & 1); 342 default: 343 val = data->voltage[sattr->nr][sattr->index]; 344 return sprintf(buf, "%d\n", 345 reg2volt(sattr->index, val, data->bypass_attn)); 346 } 347 } 348 349 static ssize_t voltage_store(struct device *dev, 350 struct device_attribute *attr, const char *buf, 351 size_t count) 352 { 353 354 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 355 struct adt7475_data *data = dev_get_drvdata(dev); 356 struct i2c_client *client = data->client; 357 unsigned char reg; 358 long val; 359 360 if (kstrtol(buf, 10, &val)) 361 return -EINVAL; 362 363 mutex_lock(&data->lock); 364 365 data->voltage[sattr->nr][sattr->index] = 366 volt2reg(sattr->index, val, data->bypass_attn); 367 368 if (sattr->index < ADT7475_VOLTAGE_COUNT) { 369 if (sattr->nr == MIN) 370 reg = VOLTAGE_MIN_REG(sattr->index); 371 else 372 reg = VOLTAGE_MAX_REG(sattr->index); 373 } else { 374 if (sattr->nr == MIN) 375 reg = REG_VTT_MIN; 376 else 377 reg = REG_VTT_MAX; 378 } 379 380 i2c_smbus_write_byte_data(client, reg, 381 data->voltage[sattr->nr][sattr->index] >> 2); 382 mutex_unlock(&data->lock); 383 384 return count; 385 } 386 387 static ssize_t temp_show(struct device *dev, struct device_attribute *attr, 388 char *buf) 389 { 390 struct adt7475_data *data = adt7475_update_device(dev); 391 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 392 int out; 393 394 if (IS_ERR(data)) 395 return PTR_ERR(data); 396 397 switch (sattr->nr) { 398 case HYSTERSIS: 399 mutex_lock(&data->lock); 400 out = data->temp[sattr->nr][sattr->index]; 401 if (sattr->index != 1) 402 out = (out >> 4) & 0xF; 403 else 404 out = (out & 0xF); 405 /* 406 * Show the value as an absolute number tied to 407 * THERM 408 */ 409 out = reg2temp(data, data->temp[THERM][sattr->index]) - 410 out * 1000; 411 mutex_unlock(&data->lock); 412 break; 413 414 case OFFSET: 415 /* 416 * Offset is always 2's complement, regardless of the 417 * setting in CONFIG5 418 */ 419 mutex_lock(&data->lock); 420 out = (s8)data->temp[sattr->nr][sattr->index]; 421 if (data->config5 & CONFIG5_TEMPOFFSET) 422 out *= 1000; 423 else 424 out *= 500; 425 mutex_unlock(&data->lock); 426 break; 427 428 case ALARM: 429 out = (data->alarms >> (sattr->index + 4)) & 1; 430 break; 431 432 case FAULT: 433 /* Note - only for remote1 and remote2 */ 434 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000)); 435 break; 436 437 default: 438 /* All other temp values are in the configured format */ 439 out = reg2temp(data, data->temp[sattr->nr][sattr->index]); 440 } 441 442 return sprintf(buf, "%d\n", out); 443 } 444 445 static ssize_t temp_store(struct device *dev, struct device_attribute *attr, 446 const char *buf, size_t count) 447 { 448 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 449 struct adt7475_data *data = dev_get_drvdata(dev); 450 struct i2c_client *client = data->client; 451 unsigned char reg = 0; 452 u8 out; 453 int temp; 454 long val; 455 456 if (kstrtol(buf, 10, &val)) 457 return -EINVAL; 458 459 mutex_lock(&data->lock); 460 461 /* We need the config register in all cases for temp <-> reg conv. */ 462 data->config5 = adt7475_read(REG_CONFIG5); 463 464 switch (sattr->nr) { 465 case OFFSET: 466 if (data->config5 & CONFIG5_TEMPOFFSET) { 467 val = clamp_val(val, -63000, 127000); 468 out = data->temp[OFFSET][sattr->index] = val / 1000; 469 } else { 470 val = clamp_val(val, -63000, 64000); 471 out = data->temp[OFFSET][sattr->index] = val / 500; 472 } 473 break; 474 475 case HYSTERSIS: 476 /* 477 * The value will be given as an absolute value, turn it 478 * into an offset based on THERM 479 */ 480 481 /* Read fresh THERM and HYSTERSIS values from the chip */ 482 data->temp[THERM][sattr->index] = 483 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2; 484 adt7475_read_hystersis(client); 485 486 temp = reg2temp(data, data->temp[THERM][sattr->index]); 487 val = clamp_val(val, temp - 15000, temp); 488 val = (temp - val) / 1000; 489 490 if (sattr->index != 1) { 491 data->temp[HYSTERSIS][sattr->index] &= 0x0F; 492 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4; 493 } else { 494 data->temp[HYSTERSIS][sattr->index] &= 0xF0; 495 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF); 496 } 497 498 out = data->temp[HYSTERSIS][sattr->index]; 499 break; 500 501 default: 502 data->temp[sattr->nr][sattr->index] = temp2reg(data, val); 503 504 /* 505 * We maintain an extra 2 digits of precision for simplicity 506 * - shift those back off before writing the value 507 */ 508 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2); 509 } 510 511 switch (sattr->nr) { 512 case MIN: 513 reg = TEMP_MIN_REG(sattr->index); 514 break; 515 case MAX: 516 reg = TEMP_MAX_REG(sattr->index); 517 break; 518 case OFFSET: 519 reg = TEMP_OFFSET_REG(sattr->index); 520 break; 521 case AUTOMIN: 522 reg = TEMP_TMIN_REG(sattr->index); 523 break; 524 case THERM: 525 reg = TEMP_THERM_REG(sattr->index); 526 break; 527 case HYSTERSIS: 528 if (sattr->index != 2) 529 reg = REG_REMOTE1_HYSTERSIS; 530 else 531 reg = REG_REMOTE2_HYSTERSIS; 532 533 break; 534 } 535 536 i2c_smbus_write_byte_data(client, reg, out); 537 538 mutex_unlock(&data->lock); 539 return count; 540 } 541 542 /* Assuming CONFIG6[SLOW] is 0 */ 543 static const int ad7475_st_map[] = { 544 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800, 545 }; 546 547 static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr, 548 char *buf) 549 { 550 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 551 struct adt7475_data *data = dev_get_drvdata(dev); 552 long val; 553 554 switch (sattr->index) { 555 case 0: 556 val = data->enh_acoustics[0] & 0xf; 557 break; 558 case 1: 559 val = data->enh_acoustics[1] & 0xf; 560 break; 561 case 2: 562 default: 563 val = (data->enh_acoustics[1] >> 4) & 0xf; 564 break; 565 } 566 567 if (val & 0x8) 568 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]); 569 else 570 return sprintf(buf, "0\n"); 571 } 572 573 static ssize_t temp_st_store(struct device *dev, 574 struct device_attribute *attr, const char *buf, 575 size_t count) 576 { 577 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 578 struct adt7475_data *data = dev_get_drvdata(dev); 579 struct i2c_client *client = data->client; 580 unsigned char reg; 581 int shift, idx; 582 ulong val; 583 584 if (kstrtoul(buf, 10, &val)) 585 return -EINVAL; 586 587 switch (sattr->index) { 588 case 0: 589 reg = REG_ENHANCE_ACOUSTICS1; 590 shift = 0; 591 idx = 0; 592 break; 593 case 1: 594 reg = REG_ENHANCE_ACOUSTICS2; 595 shift = 0; 596 idx = 1; 597 break; 598 case 2: 599 default: 600 reg = REG_ENHANCE_ACOUSTICS2; 601 shift = 4; 602 idx = 1; 603 break; 604 } 605 606 if (val > 0) { 607 val = find_closest_descending(val, ad7475_st_map, 608 ARRAY_SIZE(ad7475_st_map)); 609 val |= 0x8; 610 } 611 612 mutex_lock(&data->lock); 613 614 data->enh_acoustics[idx] &= ~(0xf << shift); 615 data->enh_acoustics[idx] |= (val << shift); 616 617 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]); 618 619 mutex_unlock(&data->lock); 620 621 return count; 622 } 623 624 /* 625 * Table of autorange values - the user will write the value in millidegrees, 626 * and we'll convert it 627 */ 628 static const int autorange_table[] = { 629 2000, 2500, 3330, 4000, 5000, 6670, 8000, 630 10000, 13330, 16000, 20000, 26670, 32000, 40000, 631 53330, 80000 632 }; 633 634 static ssize_t point2_show(struct device *dev, struct device_attribute *attr, 635 char *buf) 636 { 637 struct adt7475_data *data = adt7475_update_device(dev); 638 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 639 int out, val; 640 641 if (IS_ERR(data)) 642 return PTR_ERR(data); 643 644 mutex_lock(&data->lock); 645 out = (data->range[sattr->index] >> 4) & 0x0F; 646 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 647 mutex_unlock(&data->lock); 648 649 return sprintf(buf, "%d\n", val + autorange_table[out]); 650 } 651 652 static ssize_t point2_store(struct device *dev, struct device_attribute *attr, 653 const char *buf, size_t count) 654 { 655 struct adt7475_data *data = dev_get_drvdata(dev); 656 struct i2c_client *client = data->client; 657 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 658 int temp; 659 long val; 660 661 if (kstrtol(buf, 10, &val)) 662 return -EINVAL; 663 664 mutex_lock(&data->lock); 665 666 /* Get a fresh copy of the needed registers */ 667 data->config5 = adt7475_read(REG_CONFIG5); 668 data->temp[AUTOMIN][sattr->index] = 669 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2; 670 data->range[sattr->index] = 671 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 672 673 /* 674 * The user will write an absolute value, so subtract the start point 675 * to figure the range 676 */ 677 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 678 val = clamp_val(val, temp + autorange_table[0], 679 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]); 680 val -= temp; 681 682 /* Find the nearest table entry to what the user wrote */ 683 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table)); 684 685 data->range[sattr->index] &= ~0xF0; 686 data->range[sattr->index] |= val << 4; 687 688 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 689 data->range[sattr->index]); 690 691 mutex_unlock(&data->lock); 692 return count; 693 } 694 695 static ssize_t tach_show(struct device *dev, struct device_attribute *attr, 696 char *buf) 697 { 698 struct adt7475_data *data = adt7475_update_device(dev); 699 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 700 int out; 701 702 if (IS_ERR(data)) 703 return PTR_ERR(data); 704 705 if (sattr->nr == ALARM) 706 out = (data->alarms >> (sattr->index + 10)) & 1; 707 else 708 out = tach2rpm(data->tach[sattr->nr][sattr->index]); 709 710 return sprintf(buf, "%d\n", out); 711 } 712 713 static ssize_t tach_store(struct device *dev, struct device_attribute *attr, 714 const char *buf, size_t count) 715 { 716 717 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 718 struct adt7475_data *data = dev_get_drvdata(dev); 719 struct i2c_client *client = data->client; 720 unsigned long val; 721 722 if (kstrtoul(buf, 10, &val)) 723 return -EINVAL; 724 725 mutex_lock(&data->lock); 726 727 data->tach[MIN][sattr->index] = rpm2tach(val); 728 729 adt7475_write_word(client, TACH_MIN_REG(sattr->index), 730 data->tach[MIN][sattr->index]); 731 732 mutex_unlock(&data->lock); 733 return count; 734 } 735 736 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, 737 char *buf) 738 { 739 struct adt7475_data *data = adt7475_update_device(dev); 740 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 741 742 if (IS_ERR(data)) 743 return PTR_ERR(data); 744 745 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]); 746 } 747 748 static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr, 749 char *buf) 750 { 751 struct adt7475_data *data = adt7475_update_device(dev); 752 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 753 754 if (IS_ERR(data)) 755 return PTR_ERR(data); 756 757 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]); 758 } 759 760 static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr, 761 char *buf) 762 { 763 struct adt7475_data *data = adt7475_update_device(dev); 764 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 765 766 if (IS_ERR(data)) 767 return PTR_ERR(data); 768 769 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]); 770 } 771 772 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, 773 const char *buf, size_t count) 774 { 775 776 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 777 struct adt7475_data *data = dev_get_drvdata(dev); 778 struct i2c_client *client = data->client; 779 unsigned char reg = 0; 780 long val; 781 782 if (kstrtol(buf, 10, &val)) 783 return -EINVAL; 784 785 mutex_lock(&data->lock); 786 787 switch (sattr->nr) { 788 case INPUT: 789 /* Get a fresh value for CONTROL */ 790 data->pwm[CONTROL][sattr->index] = 791 adt7475_read(PWM_CONFIG_REG(sattr->index)); 792 793 /* 794 * If we are not in manual mode, then we shouldn't allow 795 * the user to set the pwm speed 796 */ 797 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) { 798 mutex_unlock(&data->lock); 799 return count; 800 } 801 802 reg = PWM_REG(sattr->index); 803 break; 804 805 case MIN: 806 reg = PWM_MIN_REG(sattr->index); 807 break; 808 809 case MAX: 810 reg = PWM_MAX_REG(sattr->index); 811 break; 812 } 813 814 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF); 815 i2c_smbus_write_byte_data(client, reg, 816 data->pwm[sattr->nr][sattr->index]); 817 mutex_unlock(&data->lock); 818 819 return count; 820 } 821 822 static ssize_t stall_disable_show(struct device *dev, 823 struct device_attribute *attr, char *buf) 824 { 825 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 826 struct adt7475_data *data = dev_get_drvdata(dev); 827 828 u8 mask = BIT(5 + sattr->index); 829 830 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask)); 831 } 832 833 static ssize_t stall_disable_store(struct device *dev, 834 struct device_attribute *attr, 835 const char *buf, size_t count) 836 { 837 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 838 struct adt7475_data *data = dev_get_drvdata(dev); 839 struct i2c_client *client = data->client; 840 long val; 841 u8 mask = BIT(5 + sattr->index); 842 843 if (kstrtol(buf, 10, &val)) 844 return -EINVAL; 845 846 mutex_lock(&data->lock); 847 848 data->enh_acoustics[0] &= ~mask; 849 if (val) 850 data->enh_acoustics[0] |= mask; 851 852 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1, 853 data->enh_acoustics[0]); 854 855 mutex_unlock(&data->lock); 856 857 return count; 858 } 859 860 /* Called by set_pwmctrl and set_pwmchan */ 861 862 static int hw_set_pwm(struct i2c_client *client, int index, 863 unsigned int pwmctl, unsigned int pwmchan) 864 { 865 struct adt7475_data *data = i2c_get_clientdata(client); 866 long val = 0; 867 868 switch (pwmctl) { 869 case 0: 870 val = 0x03; /* Run at full speed */ 871 break; 872 case 1: 873 val = 0x07; /* Manual mode */ 874 break; 875 case 2: 876 switch (pwmchan) { 877 case 1: 878 /* Remote1 controls PWM */ 879 val = 0x00; 880 break; 881 case 2: 882 /* local controls PWM */ 883 val = 0x01; 884 break; 885 case 4: 886 /* remote2 controls PWM */ 887 val = 0x02; 888 break; 889 case 6: 890 /* local/remote2 control PWM */ 891 val = 0x05; 892 break; 893 case 7: 894 /* All three control PWM */ 895 val = 0x06; 896 break; 897 default: 898 return -EINVAL; 899 } 900 break; 901 default: 902 return -EINVAL; 903 } 904 905 data->pwmctl[index] = pwmctl; 906 data->pwmchan[index] = pwmchan; 907 908 data->pwm[CONTROL][index] &= ~0xE0; 909 data->pwm[CONTROL][index] |= (val & 7) << 5; 910 911 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 912 data->pwm[CONTROL][index]); 913 914 return 0; 915 } 916 917 static ssize_t pwmchan_store(struct device *dev, 918 struct device_attribute *attr, const char *buf, 919 size_t count) 920 { 921 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 922 struct adt7475_data *data = dev_get_drvdata(dev); 923 struct i2c_client *client = data->client; 924 int r; 925 long val; 926 927 if (kstrtol(buf, 10, &val)) 928 return -EINVAL; 929 930 mutex_lock(&data->lock); 931 /* Read Modify Write PWM values */ 932 adt7475_read_pwm(client, sattr->index); 933 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val); 934 if (r) 935 count = r; 936 mutex_unlock(&data->lock); 937 938 return count; 939 } 940 941 static ssize_t pwmctrl_store(struct device *dev, 942 struct device_attribute *attr, const char *buf, 943 size_t count) 944 { 945 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 946 struct adt7475_data *data = dev_get_drvdata(dev); 947 struct i2c_client *client = data->client; 948 int r; 949 long val; 950 951 if (kstrtol(buf, 10, &val)) 952 return -EINVAL; 953 954 mutex_lock(&data->lock); 955 /* Read Modify Write PWM values */ 956 adt7475_read_pwm(client, sattr->index); 957 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]); 958 if (r) 959 count = r; 960 mutex_unlock(&data->lock); 961 962 return count; 963 } 964 965 /* List of frequencies for the PWM */ 966 static const int pwmfreq_table[] = { 967 11, 14, 22, 29, 35, 44, 58, 88, 22500 968 }; 969 970 static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr, 971 char *buf) 972 { 973 struct adt7475_data *data = adt7475_update_device(dev); 974 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 975 int idx; 976 977 if (IS_ERR(data)) 978 return PTR_ERR(data); 979 idx = clamp_val(data->range[sattr->index] & 0xf, 0, 980 ARRAY_SIZE(pwmfreq_table) - 1); 981 982 return sprintf(buf, "%d\n", pwmfreq_table[idx]); 983 } 984 985 static ssize_t pwmfreq_store(struct device *dev, 986 struct device_attribute *attr, const char *buf, 987 size_t count) 988 { 989 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 990 struct adt7475_data *data = dev_get_drvdata(dev); 991 struct i2c_client *client = data->client; 992 int out; 993 long val; 994 995 if (kstrtol(buf, 10, &val)) 996 return -EINVAL; 997 998 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table)); 999 1000 mutex_lock(&data->lock); 1001 1002 data->range[sattr->index] = 1003 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 1004 data->range[sattr->index] &= ~0xf; 1005 data->range[sattr->index] |= out; 1006 1007 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 1008 data->range[sattr->index]); 1009 1010 mutex_unlock(&data->lock); 1011 return count; 1012 } 1013 1014 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev, 1015 struct device_attribute *devattr, 1016 char *buf) 1017 { 1018 struct adt7475_data *data = adt7475_update_device(dev); 1019 1020 if (IS_ERR(data)) 1021 return PTR_ERR(data); 1022 1023 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY)); 1024 } 1025 1026 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev, 1027 struct device_attribute *devattr, 1028 const char *buf, size_t count) 1029 { 1030 struct adt7475_data *data = dev_get_drvdata(dev); 1031 struct i2c_client *client = data->client; 1032 long val; 1033 1034 if (kstrtol(buf, 10, &val)) 1035 return -EINVAL; 1036 if (val != 0 && val != 1) 1037 return -EINVAL; 1038 1039 mutex_lock(&data->lock); 1040 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4); 1041 if (val) 1042 data->config4 |= CONFIG4_MAXDUTY; 1043 else 1044 data->config4 &= ~CONFIG4_MAXDUTY; 1045 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4); 1046 mutex_unlock(&data->lock); 1047 1048 return count; 1049 } 1050 1051 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr, 1052 char *buf) 1053 { 1054 struct adt7475_data *data = dev_get_drvdata(dev); 1055 return sprintf(buf, "%d\n", (int)data->vrm); 1056 } 1057 1058 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr, 1059 const char *buf, size_t count) 1060 { 1061 struct adt7475_data *data = dev_get_drvdata(dev); 1062 long val; 1063 1064 if (kstrtol(buf, 10, &val)) 1065 return -EINVAL; 1066 if (val < 0 || val > 255) 1067 return -EINVAL; 1068 data->vrm = val; 1069 1070 return count; 1071 } 1072 1073 static ssize_t cpu0_vid_show(struct device *dev, 1074 struct device_attribute *devattr, char *buf) 1075 { 1076 struct adt7475_data *data = adt7475_update_device(dev); 1077 1078 if (IS_ERR(data)) 1079 return PTR_ERR(data); 1080 1081 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 1082 } 1083 1084 static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0); 1085 static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0); 1086 static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0); 1087 static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0); 1088 static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1); 1089 static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1); 1090 static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1); 1091 static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1); 1092 static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2); 1093 static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2); 1094 static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2); 1095 static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2); 1096 static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3); 1097 static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3); 1098 static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3); 1099 static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3); 1100 static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4); 1101 static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4); 1102 static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4); 1103 static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8); 1104 static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5); 1105 static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5); 1106 static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5); 1107 static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31); 1108 static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0); 1109 static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0); 1110 static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0); 1111 static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0); 1112 static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0); 1113 static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0); 1114 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0); 1115 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0); 1116 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0); 1117 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0); 1118 static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0); 1119 static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1); 1120 static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1); 1121 static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1); 1122 static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1); 1123 static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1); 1124 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1); 1125 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1); 1126 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1); 1127 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1); 1128 static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1); 1129 static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2); 1130 static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2); 1131 static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2); 1132 static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2); 1133 static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2); 1134 static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2); 1135 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2); 1136 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2); 1137 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2); 1138 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2); 1139 static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2); 1140 static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0); 1141 static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0); 1142 static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0); 1143 static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1); 1144 static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1); 1145 static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1); 1146 static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2); 1147 static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2); 1148 static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2); 1149 static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3); 1150 static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3); 1151 static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3); 1152 static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0); 1153 static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0); 1154 static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0); 1155 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0); 1156 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0); 1157 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0); 1158 static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0); 1159 static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1); 1160 static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1); 1161 static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1); 1162 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1); 1163 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1); 1164 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1); 1165 static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1); 1166 static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2); 1167 static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2); 1168 static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2); 1169 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2); 1170 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2); 1171 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2); 1172 static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2); 1173 1174 /* Non-standard name, might need revisiting */ 1175 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit); 1176 1177 static DEVICE_ATTR_RW(vrm); 1178 static DEVICE_ATTR_RO(cpu0_vid); 1179 1180 static struct attribute *adt7475_attrs[] = { 1181 &sensor_dev_attr_in1_input.dev_attr.attr, 1182 &sensor_dev_attr_in1_max.dev_attr.attr, 1183 &sensor_dev_attr_in1_min.dev_attr.attr, 1184 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1185 &sensor_dev_attr_in2_input.dev_attr.attr, 1186 &sensor_dev_attr_in2_max.dev_attr.attr, 1187 &sensor_dev_attr_in2_min.dev_attr.attr, 1188 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1189 &sensor_dev_attr_temp1_input.dev_attr.attr, 1190 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1191 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1192 &sensor_dev_attr_temp1_max.dev_attr.attr, 1193 &sensor_dev_attr_temp1_min.dev_attr.attr, 1194 &sensor_dev_attr_temp1_offset.dev_attr.attr, 1195 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, 1196 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, 1197 &sensor_dev_attr_temp1_crit.dev_attr.attr, 1198 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, 1199 &sensor_dev_attr_temp1_smoothing.dev_attr.attr, 1200 &sensor_dev_attr_temp2_input.dev_attr.attr, 1201 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1202 &sensor_dev_attr_temp2_max.dev_attr.attr, 1203 &sensor_dev_attr_temp2_min.dev_attr.attr, 1204 &sensor_dev_attr_temp2_offset.dev_attr.attr, 1205 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, 1206 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, 1207 &sensor_dev_attr_temp2_crit.dev_attr.attr, 1208 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr, 1209 &sensor_dev_attr_temp2_smoothing.dev_attr.attr, 1210 &sensor_dev_attr_temp3_input.dev_attr.attr, 1211 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1212 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1213 &sensor_dev_attr_temp3_max.dev_attr.attr, 1214 &sensor_dev_attr_temp3_min.dev_attr.attr, 1215 &sensor_dev_attr_temp3_offset.dev_attr.attr, 1216 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr, 1217 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr, 1218 &sensor_dev_attr_temp3_crit.dev_attr.attr, 1219 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr, 1220 &sensor_dev_attr_temp3_smoothing.dev_attr.attr, 1221 &sensor_dev_attr_fan1_input.dev_attr.attr, 1222 &sensor_dev_attr_fan1_min.dev_attr.attr, 1223 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1224 &sensor_dev_attr_fan2_input.dev_attr.attr, 1225 &sensor_dev_attr_fan2_min.dev_attr.attr, 1226 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1227 &sensor_dev_attr_fan3_input.dev_attr.attr, 1228 &sensor_dev_attr_fan3_min.dev_attr.attr, 1229 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1230 &sensor_dev_attr_pwm1.dev_attr.attr, 1231 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 1232 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1233 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1234 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1235 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1236 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr, 1237 &sensor_dev_attr_pwm3.dev_attr.attr, 1238 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1239 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1240 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1241 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1242 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1243 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr, 1244 &dev_attr_pwm_use_point2_pwm_at_crit.attr, 1245 NULL, 1246 }; 1247 1248 static struct attribute *fan4_attrs[] = { 1249 &sensor_dev_attr_fan4_input.dev_attr.attr, 1250 &sensor_dev_attr_fan4_min.dev_attr.attr, 1251 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1252 NULL 1253 }; 1254 1255 static struct attribute *pwm2_attrs[] = { 1256 &sensor_dev_attr_pwm2.dev_attr.attr, 1257 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1258 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1259 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1260 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1261 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1262 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr, 1263 NULL 1264 }; 1265 1266 static struct attribute *in0_attrs[] = { 1267 &sensor_dev_attr_in0_input.dev_attr.attr, 1268 &sensor_dev_attr_in0_max.dev_attr.attr, 1269 &sensor_dev_attr_in0_min.dev_attr.attr, 1270 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1271 NULL 1272 }; 1273 1274 static struct attribute *in3_attrs[] = { 1275 &sensor_dev_attr_in3_input.dev_attr.attr, 1276 &sensor_dev_attr_in3_max.dev_attr.attr, 1277 &sensor_dev_attr_in3_min.dev_attr.attr, 1278 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1279 NULL 1280 }; 1281 1282 static struct attribute *in4_attrs[] = { 1283 &sensor_dev_attr_in4_input.dev_attr.attr, 1284 &sensor_dev_attr_in4_max.dev_attr.attr, 1285 &sensor_dev_attr_in4_min.dev_attr.attr, 1286 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1287 NULL 1288 }; 1289 1290 static struct attribute *in5_attrs[] = { 1291 &sensor_dev_attr_in5_input.dev_attr.attr, 1292 &sensor_dev_attr_in5_max.dev_attr.attr, 1293 &sensor_dev_attr_in5_min.dev_attr.attr, 1294 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1295 NULL 1296 }; 1297 1298 static struct attribute *vid_attrs[] = { 1299 &dev_attr_cpu0_vid.attr, 1300 &dev_attr_vrm.attr, 1301 NULL 1302 }; 1303 1304 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs }; 1305 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs }; 1306 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs }; 1307 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs }; 1308 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs }; 1309 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs }; 1310 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs }; 1311 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs }; 1312 1313 static int adt7475_detect(struct i2c_client *client, 1314 struct i2c_board_info *info) 1315 { 1316 struct i2c_adapter *adapter = client->adapter; 1317 int vendid, devid, devid2; 1318 const char *name; 1319 1320 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1321 return -ENODEV; 1322 1323 vendid = adt7475_read(REG_VENDID); 1324 devid2 = adt7475_read(REG_DEVID2); 1325 if (vendid != 0x41 || /* Analog Devices */ 1326 (devid2 & 0xf8) != 0x68) 1327 return -ENODEV; 1328 1329 devid = adt7475_read(REG_DEVID); 1330 if (devid == 0x73) 1331 name = "adt7473"; 1332 else if (devid == 0x75 && client->addr == 0x2e) 1333 name = "adt7475"; 1334 else if (devid == 0x76) 1335 name = "adt7476"; 1336 else if ((devid2 & 0xfc) == 0x6c) 1337 name = "adt7490"; 1338 else { 1339 dev_dbg(&adapter->dev, 1340 "Couldn't detect an ADT7473/75/76/90 part at " 1341 "0x%02x\n", (unsigned int)client->addr); 1342 return -ENODEV; 1343 } 1344 1345 strscpy(info->type, name, I2C_NAME_SIZE); 1346 1347 return 0; 1348 } 1349 1350 static int adt7475_update_limits(struct i2c_client *client) 1351 { 1352 struct adt7475_data *data = i2c_get_clientdata(client); 1353 int i; 1354 int ret; 1355 1356 ret = adt7475_read(REG_CONFIG4); 1357 if (ret < 0) 1358 return ret; 1359 data->config4 = ret; 1360 1361 ret = adt7475_read(REG_CONFIG5); 1362 if (ret < 0) 1363 return ret; 1364 data->config5 = ret; 1365 1366 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1367 if (!(data->has_voltage & (1 << i))) 1368 continue; 1369 /* Adjust values so they match the input precision */ 1370 ret = adt7475_read(VOLTAGE_MIN_REG(i)); 1371 if (ret < 0) 1372 return ret; 1373 data->voltage[MIN][i] = ret << 2; 1374 1375 ret = adt7475_read(VOLTAGE_MAX_REG(i)); 1376 if (ret < 0) 1377 return ret; 1378 data->voltage[MAX][i] = ret << 2; 1379 } 1380 1381 if (data->has_voltage & (1 << 5)) { 1382 ret = adt7475_read(REG_VTT_MIN); 1383 if (ret < 0) 1384 return ret; 1385 data->voltage[MIN][5] = ret << 2; 1386 1387 ret = adt7475_read(REG_VTT_MAX); 1388 if (ret < 0) 1389 return ret; 1390 data->voltage[MAX][5] = ret << 2; 1391 } 1392 1393 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 1394 /* Adjust values so they match the input precision */ 1395 ret = adt7475_read(TEMP_MIN_REG(i)); 1396 if (ret < 0) 1397 return ret; 1398 data->temp[MIN][i] = ret << 2; 1399 1400 ret = adt7475_read(TEMP_MAX_REG(i)); 1401 if (ret < 0) 1402 return ret; 1403 data->temp[MAX][i] = ret << 2; 1404 1405 ret = adt7475_read(TEMP_TMIN_REG(i)); 1406 if (ret < 0) 1407 return ret; 1408 data->temp[AUTOMIN][i] = ret << 2; 1409 1410 ret = adt7475_read(TEMP_THERM_REG(i)); 1411 if (ret < 0) 1412 return ret; 1413 data->temp[THERM][i] = ret << 2; 1414 1415 ret = adt7475_read(TEMP_OFFSET_REG(i)); 1416 if (ret < 0) 1417 return ret; 1418 data->temp[OFFSET][i] = ret; 1419 } 1420 adt7475_read_hystersis(client); 1421 1422 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 1423 if (i == 3 && !data->has_fan4) 1424 continue; 1425 ret = adt7475_read_word(client, TACH_MIN_REG(i)); 1426 if (ret < 0) 1427 return ret; 1428 data->tach[MIN][i] = ret; 1429 } 1430 1431 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1432 if (i == 1 && !data->has_pwm2) 1433 continue; 1434 ret = adt7475_read(PWM_MAX_REG(i)); 1435 if (ret < 0) 1436 return ret; 1437 data->pwm[MAX][i] = ret; 1438 1439 ret = adt7475_read(PWM_MIN_REG(i)); 1440 if (ret < 0) 1441 return ret; 1442 data->pwm[MIN][i] = ret; 1443 /* Set the channel and control information */ 1444 adt7475_read_pwm(client, i); 1445 } 1446 1447 ret = adt7475_read(TEMP_TRANGE_REG(0)); 1448 if (ret < 0) 1449 return ret; 1450 data->range[0] = ret; 1451 1452 ret = adt7475_read(TEMP_TRANGE_REG(1)); 1453 if (ret < 0) 1454 return ret; 1455 data->range[1] = ret; 1456 1457 ret = adt7475_read(TEMP_TRANGE_REG(2)); 1458 if (ret < 0) 1459 return ret; 1460 data->range[2] = ret; 1461 1462 return 0; 1463 } 1464 1465 static int load_config3(const struct i2c_client *client, const char *propname) 1466 { 1467 const char *function; 1468 u8 config3; 1469 int ret; 1470 1471 ret = of_property_read_string(client->dev.of_node, propname, &function); 1472 if (!ret) { 1473 ret = adt7475_read(REG_CONFIG3); 1474 if (ret < 0) 1475 return ret; 1476 1477 config3 = ret & ~CONFIG3_SMBALERT; 1478 if (!strcmp("pwm2", function)) 1479 ; 1480 else if (!strcmp("smbalert#", function)) 1481 config3 |= CONFIG3_SMBALERT; 1482 else 1483 return -EINVAL; 1484 1485 return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3); 1486 } 1487 1488 return 0; 1489 } 1490 1491 static int load_config4(const struct i2c_client *client, const char *propname) 1492 { 1493 const char *function; 1494 u8 config4; 1495 int ret; 1496 1497 ret = of_property_read_string(client->dev.of_node, propname, &function); 1498 if (!ret) { 1499 ret = adt7475_read(REG_CONFIG4); 1500 if (ret < 0) 1501 return ret; 1502 1503 config4 = ret & ~CONFIG4_PINFUNC; 1504 1505 if (!strcmp("tach4", function)) 1506 ; 1507 else if (!strcmp("therm#", function)) 1508 config4 |= CONFIG4_THERM; 1509 else if (!strcmp("smbalert#", function)) 1510 config4 |= CONFIG4_SMBALERT; 1511 else if (!strcmp("gpio", function)) 1512 config4 |= CONFIG4_PINFUNC; 1513 else 1514 return -EINVAL; 1515 1516 return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4); 1517 } 1518 1519 return 0; 1520 } 1521 1522 static int load_config(const struct i2c_client *client, enum chips chip) 1523 { 1524 int err; 1525 const char *prop1, *prop2; 1526 1527 switch (chip) { 1528 case adt7473: 1529 case adt7475: 1530 prop1 = "adi,pin5-function"; 1531 prop2 = "adi,pin9-function"; 1532 break; 1533 case adt7476: 1534 case adt7490: 1535 prop1 = "adi,pin10-function"; 1536 prop2 = "adi,pin14-function"; 1537 break; 1538 } 1539 1540 err = load_config3(client, prop1); 1541 if (err) { 1542 dev_err(&client->dev, "failed to configure %s\n", prop1); 1543 return err; 1544 } 1545 1546 err = load_config4(client, prop2); 1547 if (err) { 1548 dev_err(&client->dev, "failed to configure %s\n", prop2); 1549 return err; 1550 } 1551 1552 return 0; 1553 } 1554 1555 static int set_property_bit(const struct i2c_client *client, char *property, 1556 u8 *config, u8 bit_index) 1557 { 1558 u32 prop_value = 0; 1559 int ret = of_property_read_u32(client->dev.of_node, property, 1560 &prop_value); 1561 1562 if (!ret) { 1563 if (prop_value) 1564 *config |= (1 << bit_index); 1565 else 1566 *config &= ~(1 << bit_index); 1567 } 1568 1569 return ret; 1570 } 1571 1572 static int load_attenuators(const struct i2c_client *client, enum chips chip, 1573 struct adt7475_data *data) 1574 { 1575 switch (chip) { 1576 case adt7476: 1577 case adt7490: 1578 set_property_bit(client, "adi,bypass-attenuator-in0", 1579 &data->config4, 4); 1580 set_property_bit(client, "adi,bypass-attenuator-in1", 1581 &data->config4, 5); 1582 set_property_bit(client, "adi,bypass-attenuator-in3", 1583 &data->config4, 6); 1584 set_property_bit(client, "adi,bypass-attenuator-in4", 1585 &data->config4, 7); 1586 1587 return i2c_smbus_write_byte_data(client, REG_CONFIG4, 1588 data->config4); 1589 case adt7473: 1590 case adt7475: 1591 set_property_bit(client, "adi,bypass-attenuator-in1", 1592 &data->config2, 5); 1593 1594 return i2c_smbus_write_byte_data(client, REG_CONFIG2, 1595 data->config2); 1596 } 1597 1598 return 0; 1599 } 1600 1601 static int adt7475_set_pwm_polarity(struct i2c_client *client) 1602 { 1603 u32 states[ADT7475_PWM_COUNT]; 1604 int ret, i; 1605 u8 val; 1606 1607 ret = device_property_read_u32_array(&client->dev, 1608 "adi,pwm-active-state", states, 1609 ARRAY_SIZE(states)); 1610 if (ret) 1611 return ret; 1612 1613 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1614 ret = adt7475_read(PWM_CONFIG_REG(i)); 1615 if (ret < 0) 1616 return ret; 1617 val = ret; 1618 if (states[i]) 1619 val &= ~BIT(4); 1620 else 1621 val |= BIT(4); 1622 1623 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val); 1624 if (ret) 1625 return ret; 1626 } 1627 1628 return 0; 1629 } 1630 1631 static int adt7475_probe(struct i2c_client *client) 1632 { 1633 enum chips chip; 1634 static const char * const names[] = { 1635 [adt7473] = "ADT7473", 1636 [adt7475] = "ADT7475", 1637 [adt7476] = "ADT7476", 1638 [adt7490] = "ADT7490", 1639 }; 1640 1641 struct adt7475_data *data; 1642 struct device *hwmon_dev; 1643 int i, ret = 0, revision, group_num = 0; 1644 u8 config3; 1645 const struct i2c_device_id *id = i2c_match_id(adt7475_id, client); 1646 1647 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); 1648 if (data == NULL) 1649 return -ENOMEM; 1650 1651 mutex_init(&data->lock); 1652 data->client = client; 1653 i2c_set_clientdata(client, data); 1654 1655 if (client->dev.of_node) 1656 chip = (enum chips)of_device_get_match_data(&client->dev); 1657 else 1658 chip = id->driver_data; 1659 1660 /* Initialize device-specific values */ 1661 switch (chip) { 1662 case adt7476: 1663 data->has_voltage = 0x0e; /* in1 to in3 */ 1664 revision = adt7475_read(REG_DEVID2) & 0x07; 1665 break; 1666 case adt7490: 1667 data->has_voltage = 0x3e; /* in1 to in5 */ 1668 revision = adt7475_read(REG_DEVID2) & 0x03; 1669 if (revision == 0x03) 1670 revision += adt7475_read(REG_DEVREV2); 1671 break; 1672 default: 1673 data->has_voltage = 0x06; /* in1, in2 */ 1674 revision = adt7475_read(REG_DEVID2) & 0x07; 1675 } 1676 1677 ret = load_config(client, chip); 1678 if (ret) 1679 return ret; 1680 1681 config3 = adt7475_read(REG_CONFIG3); 1682 /* Pin PWM2 may alternatively be used for ALERT output */ 1683 if (!(config3 & CONFIG3_SMBALERT)) 1684 data->has_pwm2 = 1; 1685 /* Meaning of this bit is inverted for the ADT7473-1 */ 1686 if (id->driver_data == adt7473 && revision >= 1) 1687 data->has_pwm2 = !data->has_pwm2; 1688 1689 data->config4 = adt7475_read(REG_CONFIG4); 1690 /* Pin TACH4 may alternatively be used for THERM */ 1691 if ((data->config4 & CONFIG4_PINFUNC) == 0x0) 1692 data->has_fan4 = 1; 1693 1694 /* 1695 * THERM configuration is more complex on the ADT7476 and ADT7490, 1696 * because 2 different pins (TACH4 and +2.5 Vin) can be used for 1697 * this function 1698 */ 1699 if (id->driver_data == adt7490) { 1700 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 && 1701 !(config3 & CONFIG3_THERM)) 1702 data->has_fan4 = 1; 1703 } 1704 if (id->driver_data == adt7476 || id->driver_data == adt7490) { 1705 if (!(config3 & CONFIG3_THERM) || 1706 (data->config4 & CONFIG4_PINFUNC) == 0x1) 1707 data->has_voltage |= (1 << 0); /* in0 */ 1708 } 1709 1710 /* 1711 * On the ADT7476, the +12V input pin may instead be used as VID5, 1712 * and VID pins may alternatively be used as GPIO 1713 */ 1714 if (id->driver_data == adt7476) { 1715 u8 vid = adt7475_read(REG_VID); 1716 if (!(vid & VID_VIDSEL)) 1717 data->has_voltage |= (1 << 4); /* in4 */ 1718 1719 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO); 1720 } 1721 1722 /* Voltage attenuators can be bypassed, globally or individually */ 1723 data->config2 = adt7475_read(REG_CONFIG2); 1724 ret = load_attenuators(client, chip, data); 1725 if (ret) 1726 dev_warn(&client->dev, "Error configuring attenuator bypass\n"); 1727 1728 if (data->config2 & CONFIG2_ATTN) { 1729 data->bypass_attn = (0x3 << 3) | 0x3; 1730 } else { 1731 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) | 1732 ((data->config4 & CONFIG4_ATTN_IN43) >> 3); 1733 } 1734 data->bypass_attn &= data->has_voltage; 1735 1736 /* 1737 * Call adt7475_read_pwm for all pwm's as this will reprogram any 1738 * pwm's which are disabled to manual mode with 0% duty cycle 1739 */ 1740 for (i = 0; i < ADT7475_PWM_COUNT; i++) 1741 adt7475_read_pwm(client, i); 1742 1743 ret = adt7475_set_pwm_polarity(client); 1744 if (ret && ret != -EINVAL) 1745 dev_warn(&client->dev, "Error configuring pwm polarity\n"); 1746 1747 /* Start monitoring */ 1748 switch (chip) { 1749 case adt7475: 1750 case adt7476: 1751 i2c_smbus_write_byte_data(client, REG_CONFIG1, 1752 adt7475_read(REG_CONFIG1) | 0x01); 1753 break; 1754 default: 1755 break; 1756 } 1757 1758 data->groups[group_num++] = &adt7475_attr_group; 1759 1760 /* Features that can be disabled individually */ 1761 if (data->has_fan4) { 1762 data->groups[group_num++] = &fan4_attr_group; 1763 } 1764 if (data->has_pwm2) { 1765 data->groups[group_num++] = &pwm2_attr_group; 1766 } 1767 if (data->has_voltage & (1 << 0)) { 1768 data->groups[group_num++] = &in0_attr_group; 1769 } 1770 if (data->has_voltage & (1 << 3)) { 1771 data->groups[group_num++] = &in3_attr_group; 1772 } 1773 if (data->has_voltage & (1 << 4)) { 1774 data->groups[group_num++] = &in4_attr_group; 1775 } 1776 if (data->has_voltage & (1 << 5)) { 1777 data->groups[group_num++] = &in5_attr_group; 1778 } 1779 if (data->has_vid) { 1780 data->vrm = vid_which_vrm(); 1781 data->groups[group_num] = &vid_attr_group; 1782 } 1783 1784 /* register device with all the acquired attributes */ 1785 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev, 1786 client->name, data, 1787 data->groups); 1788 1789 if (IS_ERR(hwmon_dev)) { 1790 ret = PTR_ERR(hwmon_dev); 1791 return ret; 1792 } 1793 1794 dev_info(&client->dev, "%s device, revision %d\n", 1795 names[id->driver_data], revision); 1796 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2) 1797 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n", 1798 (data->has_voltage & (1 << 0)) ? " in0" : "", 1799 (data->has_voltage & (1 << 4)) ? " in4" : "", 1800 data->has_fan4 ? " fan4" : "", 1801 data->has_pwm2 ? " pwm2" : "", 1802 data->has_vid ? " vid" : ""); 1803 if (data->bypass_attn) 1804 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n", 1805 (data->bypass_attn & (1 << 0)) ? " in0" : "", 1806 (data->bypass_attn & (1 << 1)) ? " in1" : "", 1807 (data->bypass_attn & (1 << 3)) ? " in3" : "", 1808 (data->bypass_attn & (1 << 4)) ? " in4" : ""); 1809 1810 /* Limits and settings, should never change update more than once */ 1811 ret = adt7475_update_limits(client); 1812 if (ret) 1813 return ret; 1814 1815 return 0; 1816 } 1817 1818 static struct i2c_driver adt7475_driver = { 1819 .class = I2C_CLASS_HWMON, 1820 .driver = { 1821 .name = "adt7475", 1822 .of_match_table = of_match_ptr(adt7475_of_match), 1823 }, 1824 .probe_new = adt7475_probe, 1825 .id_table = adt7475_id, 1826 .detect = adt7475_detect, 1827 .address_list = normal_i2c, 1828 }; 1829 1830 static void adt7475_read_hystersis(struct i2c_client *client) 1831 { 1832 struct adt7475_data *data = i2c_get_clientdata(client); 1833 1834 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS); 1835 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0]; 1836 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS); 1837 } 1838 1839 static void adt7475_read_pwm(struct i2c_client *client, int index) 1840 { 1841 struct adt7475_data *data = i2c_get_clientdata(client); 1842 unsigned int v; 1843 1844 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index)); 1845 1846 /* 1847 * Figure out the internal value for pwmctrl and pwmchan 1848 * based on the current settings 1849 */ 1850 v = (data->pwm[CONTROL][index] >> 5) & 7; 1851 1852 if (v == 3) 1853 data->pwmctl[index] = 0; 1854 else if (v == 7) 1855 data->pwmctl[index] = 1; 1856 else if (v == 4) { 1857 /* 1858 * The fan is disabled - we don't want to 1859 * support that, so change to manual mode and 1860 * set the duty cycle to 0 instead 1861 */ 1862 data->pwm[INPUT][index] = 0; 1863 data->pwm[CONTROL][index] &= ~0xE0; 1864 data->pwm[CONTROL][index] |= (7 << 5); 1865 1866 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 1867 data->pwm[INPUT][index]); 1868 1869 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 1870 data->pwm[CONTROL][index]); 1871 1872 data->pwmctl[index] = 1; 1873 } else { 1874 data->pwmctl[index] = 2; 1875 1876 switch (v) { 1877 case 0: 1878 data->pwmchan[index] = 1; 1879 break; 1880 case 1: 1881 data->pwmchan[index] = 2; 1882 break; 1883 case 2: 1884 data->pwmchan[index] = 4; 1885 break; 1886 case 5: 1887 data->pwmchan[index] = 6; 1888 break; 1889 case 6: 1890 data->pwmchan[index] = 7; 1891 break; 1892 } 1893 } 1894 } 1895 1896 static int adt7475_update_measure(struct device *dev) 1897 { 1898 struct adt7475_data *data = dev_get_drvdata(dev); 1899 struct i2c_client *client = data->client; 1900 u16 ext; 1901 int i; 1902 int ret; 1903 1904 ret = adt7475_read(REG_STATUS2); 1905 if (ret < 0) 1906 return ret; 1907 data->alarms = ret << 8; 1908 1909 ret = adt7475_read(REG_STATUS1); 1910 if (ret < 0) 1911 return ret; 1912 data->alarms |= ret; 1913 1914 ret = adt7475_read(REG_EXTEND2); 1915 if (ret < 0) 1916 return ret; 1917 1918 ext = (ret << 8); 1919 1920 ret = adt7475_read(REG_EXTEND1); 1921 if (ret < 0) 1922 return ret; 1923 1924 ext |= ret; 1925 1926 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1927 if (!(data->has_voltage & (1 << i))) 1928 continue; 1929 ret = adt7475_read(VOLTAGE_REG(i)); 1930 if (ret < 0) 1931 return ret; 1932 data->voltage[INPUT][i] = 1933 (ret << 2) | 1934 ((ext >> (i * 2)) & 3); 1935 } 1936 1937 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 1938 ret = adt7475_read(TEMP_REG(i)); 1939 if (ret < 0) 1940 return ret; 1941 data->temp[INPUT][i] = 1942 (ret << 2) | 1943 ((ext >> ((i + 5) * 2)) & 3); 1944 } 1945 1946 if (data->has_voltage & (1 << 5)) { 1947 ret = adt7475_read(REG_STATUS4); 1948 if (ret < 0) 1949 return ret; 1950 data->alarms |= ret << 24; 1951 1952 ret = adt7475_read(REG_EXTEND3); 1953 if (ret < 0) 1954 return ret; 1955 ext = ret; 1956 1957 ret = adt7475_read(REG_VTT); 1958 if (ret < 0) 1959 return ret; 1960 data->voltage[INPUT][5] = ret << 2 | 1961 ((ext >> 4) & 3); 1962 } 1963 1964 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 1965 if (i == 3 && !data->has_fan4) 1966 continue; 1967 ret = adt7475_read_word(client, TACH_REG(i)); 1968 if (ret < 0) 1969 return ret; 1970 data->tach[INPUT][i] = ret; 1971 } 1972 1973 /* Updated by hw when in auto mode */ 1974 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1975 if (i == 1 && !data->has_pwm2) 1976 continue; 1977 ret = adt7475_read(PWM_REG(i)); 1978 if (ret < 0) 1979 return ret; 1980 data->pwm[INPUT][i] = ret; 1981 } 1982 1983 if (data->has_vid) { 1984 ret = adt7475_read(REG_VID); 1985 if (ret < 0) 1986 return ret; 1987 data->vid = ret & 0x3f; 1988 } 1989 1990 return 0; 1991 } 1992 1993 static struct adt7475_data *adt7475_update_device(struct device *dev) 1994 { 1995 struct adt7475_data *data = dev_get_drvdata(dev); 1996 int ret; 1997 1998 mutex_lock(&data->lock); 1999 2000 /* Measurement values update every 2 seconds */ 2001 if (time_after(jiffies, data->measure_updated + HZ * 2) || 2002 !data->valid) { 2003 ret = adt7475_update_measure(dev); 2004 if (ret) { 2005 data->valid = false; 2006 mutex_unlock(&data->lock); 2007 return ERR_PTR(ret); 2008 } 2009 data->measure_updated = jiffies; 2010 data->valid = true; 2011 } 2012 2013 mutex_unlock(&data->lock); 2014 2015 return data; 2016 } 2017 2018 module_i2c_driver(adt7475_driver); 2019 2020 MODULE_AUTHOR("Advanced Micro Devices, Inc"); 2021 MODULE_DESCRIPTION("adt7475 driver"); 2022 MODULE_LICENSE("GPL"); 2023