1 /* 2 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives 3 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc. 4 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net> 5 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com> 6 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de> 7 * 8 * Derived from the lm83 driver by Jean Delvare 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 15 #include <linux/module.h> 16 #include <linux/of_device.h> 17 #include <linux/init.h> 18 #include <linux/slab.h> 19 #include <linux/i2c.h> 20 #include <linux/hwmon.h> 21 #include <linux/hwmon-sysfs.h> 22 #include <linux/hwmon-vid.h> 23 #include <linux/err.h> 24 #include <linux/jiffies.h> 25 #include <linux/util_macros.h> 26 27 /* Indexes for the sysfs hooks */ 28 29 #define INPUT 0 30 #define MIN 1 31 #define MAX 2 32 #define CONTROL 3 33 #define OFFSET 3 34 #define AUTOMIN 4 35 #define THERM 5 36 #define HYSTERSIS 6 37 38 /* 39 * These are unique identifiers for the sysfs functions - unlike the 40 * numbers above, these are not also indexes into an array 41 */ 42 43 #define ALARM 9 44 #define FAULT 10 45 46 /* 7475 Common Registers */ 47 48 #define REG_DEVREV2 0x12 /* ADT7490 only */ 49 50 #define REG_VTT 0x1E /* ADT7490 only */ 51 #define REG_EXTEND3 0x1F /* ADT7490 only */ 52 53 #define REG_VOLTAGE_BASE 0x20 54 #define REG_TEMP_BASE 0x25 55 #define REG_TACH_BASE 0x28 56 #define REG_PWM_BASE 0x30 57 #define REG_PWM_MAX_BASE 0x38 58 59 #define REG_DEVID 0x3D 60 #define REG_VENDID 0x3E 61 #define REG_DEVID2 0x3F 62 63 #define REG_CONFIG1 0x40 64 65 #define REG_STATUS1 0x41 66 #define REG_STATUS2 0x42 67 68 #define REG_VID 0x43 /* ADT7476 only */ 69 70 #define REG_VOLTAGE_MIN_BASE 0x44 71 #define REG_VOLTAGE_MAX_BASE 0x45 72 73 #define REG_TEMP_MIN_BASE 0x4E 74 #define REG_TEMP_MAX_BASE 0x4F 75 76 #define REG_TACH_MIN_BASE 0x54 77 78 #define REG_PWM_CONFIG_BASE 0x5C 79 80 #define REG_TEMP_TRANGE_BASE 0x5F 81 82 #define REG_ENHANCE_ACOUSTICS1 0x62 83 #define REG_ENHANCE_ACOUSTICS2 0x63 84 85 #define REG_PWM_MIN_BASE 0x64 86 87 #define REG_TEMP_TMIN_BASE 0x67 88 #define REG_TEMP_THERM_BASE 0x6A 89 90 #define REG_REMOTE1_HYSTERSIS 0x6D 91 #define REG_REMOTE2_HYSTERSIS 0x6E 92 93 #define REG_TEMP_OFFSET_BASE 0x70 94 95 #define REG_CONFIG2 0x73 96 97 #define REG_EXTEND1 0x76 98 #define REG_EXTEND2 0x77 99 100 #define REG_CONFIG3 0x78 101 #define REG_CONFIG5 0x7C 102 #define REG_CONFIG4 0x7D 103 104 #define REG_STATUS4 0x81 /* ADT7490 only */ 105 106 #define REG_VTT_MIN 0x84 /* ADT7490 only */ 107 #define REG_VTT_MAX 0x86 /* ADT7490 only */ 108 109 #define VID_VIDSEL 0x80 /* ADT7476 only */ 110 111 #define CONFIG2_ATTN 0x20 112 113 #define CONFIG3_SMBALERT 0x01 114 #define CONFIG3_THERM 0x02 115 116 #define CONFIG4_PINFUNC 0x03 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 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 device *hwmon_dev; 194 struct mutex lock; 195 196 unsigned long measure_updated; 197 bool valid; 198 199 u8 config4; 200 u8 config5; 201 u8 has_voltage; 202 u8 bypass_attn; /* Bypass voltage attenuator */ 203 u8 has_pwm2:1; 204 u8 has_fan4:1; 205 u8 has_vid:1; 206 u32 alarms; 207 u16 voltage[3][6]; 208 u16 temp[7][3]; 209 u16 tach[2][4]; 210 u8 pwm[4][3]; 211 u8 range[3]; 212 u8 pwmctl[3]; 213 u8 pwmchan[3]; 214 u8 enh_acoustics[2]; 215 216 u8 vid; 217 u8 vrm; 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 = (volt * 1024) / 2250; 300 else 301 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250); 302 return clamp_val(reg, 0, 1023) & (0xff << 2); 303 } 304 305 static u16 adt7475_read_word(struct i2c_client *client, int reg) 306 { 307 u16 val; 308 309 val = i2c_smbus_read_byte_data(client, reg); 310 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8); 311 312 return val; 313 } 314 315 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val) 316 { 317 i2c_smbus_write_byte_data(client, reg + 1, val >> 8); 318 i2c_smbus_write_byte_data(client, reg, val & 0xFF); 319 } 320 321 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr, 322 char *buf) 323 { 324 struct adt7475_data *data = adt7475_update_device(dev); 325 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 326 unsigned short val; 327 328 if (IS_ERR(data)) 329 return PTR_ERR(data); 330 331 switch (sattr->nr) { 332 case ALARM: 333 return sprintf(buf, "%d\n", 334 (data->alarms >> sattr->index) & 1); 335 default: 336 val = data->voltage[sattr->nr][sattr->index]; 337 return sprintf(buf, "%d\n", 338 reg2volt(sattr->index, val, data->bypass_attn)); 339 } 340 } 341 342 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr, 343 const char *buf, size_t count) 344 { 345 346 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 347 struct i2c_client *client = to_i2c_client(dev); 348 struct adt7475_data *data = i2c_get_clientdata(client); 349 unsigned char reg; 350 long val; 351 352 if (kstrtol(buf, 10, &val)) 353 return -EINVAL; 354 355 mutex_lock(&data->lock); 356 357 data->voltage[sattr->nr][sattr->index] = 358 volt2reg(sattr->index, val, data->bypass_attn); 359 360 if (sattr->index < ADT7475_VOLTAGE_COUNT) { 361 if (sattr->nr == MIN) 362 reg = VOLTAGE_MIN_REG(sattr->index); 363 else 364 reg = VOLTAGE_MAX_REG(sattr->index); 365 } else { 366 if (sattr->nr == MIN) 367 reg = REG_VTT_MIN; 368 else 369 reg = REG_VTT_MAX; 370 } 371 372 i2c_smbus_write_byte_data(client, reg, 373 data->voltage[sattr->nr][sattr->index] >> 2); 374 mutex_unlock(&data->lock); 375 376 return count; 377 } 378 379 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 380 char *buf) 381 { 382 struct adt7475_data *data = adt7475_update_device(dev); 383 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 384 int out; 385 386 if (IS_ERR(data)) 387 return PTR_ERR(data); 388 389 switch (sattr->nr) { 390 case HYSTERSIS: 391 mutex_lock(&data->lock); 392 out = data->temp[sattr->nr][sattr->index]; 393 if (sattr->index != 1) 394 out = (out >> 4) & 0xF; 395 else 396 out = (out & 0xF); 397 /* 398 * Show the value as an absolute number tied to 399 * THERM 400 */ 401 out = reg2temp(data, data->temp[THERM][sattr->index]) - 402 out * 1000; 403 mutex_unlock(&data->lock); 404 break; 405 406 case OFFSET: 407 /* 408 * Offset is always 2's complement, regardless of the 409 * setting in CONFIG5 410 */ 411 mutex_lock(&data->lock); 412 out = (s8)data->temp[sattr->nr][sattr->index]; 413 if (data->config5 & CONFIG5_TEMPOFFSET) 414 out *= 1000; 415 else 416 out *= 500; 417 mutex_unlock(&data->lock); 418 break; 419 420 case ALARM: 421 out = (data->alarms >> (sattr->index + 4)) & 1; 422 break; 423 424 case FAULT: 425 /* Note - only for remote1 and remote2 */ 426 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000)); 427 break; 428 429 default: 430 /* All other temp values are in the configured format */ 431 out = reg2temp(data, data->temp[sattr->nr][sattr->index]); 432 } 433 434 return sprintf(buf, "%d\n", out); 435 } 436 437 static ssize_t set_temp(struct device *dev, struct device_attribute *attr, 438 const char *buf, size_t count) 439 { 440 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 441 struct i2c_client *client = to_i2c_client(dev); 442 struct adt7475_data *data = i2c_get_clientdata(client); 443 unsigned char reg = 0; 444 u8 out; 445 int temp; 446 long val; 447 448 if (kstrtol(buf, 10, &val)) 449 return -EINVAL; 450 451 mutex_lock(&data->lock); 452 453 /* We need the config register in all cases for temp <-> reg conv. */ 454 data->config5 = adt7475_read(REG_CONFIG5); 455 456 switch (sattr->nr) { 457 case OFFSET: 458 if (data->config5 & CONFIG5_TEMPOFFSET) { 459 val = clamp_val(val, -63000, 127000); 460 out = data->temp[OFFSET][sattr->index] = val / 1000; 461 } else { 462 val = clamp_val(val, -63000, 64000); 463 out = data->temp[OFFSET][sattr->index] = val / 500; 464 } 465 break; 466 467 case HYSTERSIS: 468 /* 469 * The value will be given as an absolute value, turn it 470 * into an offset based on THERM 471 */ 472 473 /* Read fresh THERM and HYSTERSIS values from the chip */ 474 data->temp[THERM][sattr->index] = 475 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2; 476 adt7475_read_hystersis(client); 477 478 temp = reg2temp(data, data->temp[THERM][sattr->index]); 479 val = clamp_val(val, temp - 15000, temp); 480 val = (temp - val) / 1000; 481 482 if (sattr->index != 1) { 483 data->temp[HYSTERSIS][sattr->index] &= 0xF0; 484 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4; 485 } else { 486 data->temp[HYSTERSIS][sattr->index] &= 0x0F; 487 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF); 488 } 489 490 out = data->temp[HYSTERSIS][sattr->index]; 491 break; 492 493 default: 494 data->temp[sattr->nr][sattr->index] = temp2reg(data, val); 495 496 /* 497 * We maintain an extra 2 digits of precision for simplicity 498 * - shift those back off before writing the value 499 */ 500 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2); 501 } 502 503 switch (sattr->nr) { 504 case MIN: 505 reg = TEMP_MIN_REG(sattr->index); 506 break; 507 case MAX: 508 reg = TEMP_MAX_REG(sattr->index); 509 break; 510 case OFFSET: 511 reg = TEMP_OFFSET_REG(sattr->index); 512 break; 513 case AUTOMIN: 514 reg = TEMP_TMIN_REG(sattr->index); 515 break; 516 case THERM: 517 reg = TEMP_THERM_REG(sattr->index); 518 break; 519 case HYSTERSIS: 520 if (sattr->index != 2) 521 reg = REG_REMOTE1_HYSTERSIS; 522 else 523 reg = REG_REMOTE2_HYSTERSIS; 524 525 break; 526 } 527 528 i2c_smbus_write_byte_data(client, reg, out); 529 530 mutex_unlock(&data->lock); 531 return count; 532 } 533 534 /* Assuming CONFIG6[SLOW] is 0 */ 535 static const int ad7475_st_map[] = { 536 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800, 537 }; 538 539 static ssize_t show_temp_st(struct device *dev, struct device_attribute *attr, 540 char *buf) 541 { 542 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 543 struct i2c_client *client = to_i2c_client(dev); 544 struct adt7475_data *data = i2c_get_clientdata(client); 545 long val; 546 547 switch (sattr->index) { 548 case 0: 549 val = data->enh_acoustics[0] & 0xf; 550 break; 551 case 1: 552 val = (data->enh_acoustics[1] >> 4) & 0xf; 553 break; 554 case 2: 555 default: 556 val = data->enh_acoustics[1] & 0xf; 557 break; 558 } 559 560 if (val & 0x8) 561 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]); 562 else 563 return sprintf(buf, "0\n"); 564 } 565 566 static ssize_t set_temp_st(struct device *dev, struct device_attribute *attr, 567 const char *buf, size_t count) 568 { 569 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 570 struct i2c_client *client = to_i2c_client(dev); 571 struct adt7475_data *data = i2c_get_clientdata(client); 572 unsigned char reg; 573 int shift, idx; 574 ulong val; 575 576 if (kstrtoul(buf, 10, &val)) 577 return -EINVAL; 578 579 switch (sattr->index) { 580 case 0: 581 reg = REG_ENHANCE_ACOUSTICS1; 582 shift = 0; 583 idx = 0; 584 break; 585 case 1: 586 reg = REG_ENHANCE_ACOUSTICS2; 587 shift = 0; 588 idx = 1; 589 break; 590 case 2: 591 default: 592 reg = REG_ENHANCE_ACOUSTICS2; 593 shift = 4; 594 idx = 1; 595 break; 596 } 597 598 if (val > 0) { 599 val = find_closest_descending(val, ad7475_st_map, 600 ARRAY_SIZE(ad7475_st_map)); 601 val |= 0x8; 602 } 603 604 mutex_lock(&data->lock); 605 606 data->enh_acoustics[idx] &= ~(0xf << shift); 607 data->enh_acoustics[idx] |= (val << shift); 608 609 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]); 610 611 mutex_unlock(&data->lock); 612 613 return count; 614 } 615 616 /* 617 * Table of autorange values - the user will write the value in millidegrees, 618 * and we'll convert it 619 */ 620 static const int autorange_table[] = { 621 2000, 2500, 3330, 4000, 5000, 6670, 8000, 622 10000, 13330, 16000, 20000, 26670, 32000, 40000, 623 53330, 80000 624 }; 625 626 static ssize_t show_point2(struct device *dev, struct device_attribute *attr, 627 char *buf) 628 { 629 struct adt7475_data *data = adt7475_update_device(dev); 630 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 631 int out, val; 632 633 if (IS_ERR(data)) 634 return PTR_ERR(data); 635 636 mutex_lock(&data->lock); 637 out = (data->range[sattr->index] >> 4) & 0x0F; 638 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 639 mutex_unlock(&data->lock); 640 641 return sprintf(buf, "%d\n", val + autorange_table[out]); 642 } 643 644 static ssize_t set_point2(struct device *dev, struct device_attribute *attr, 645 const char *buf, size_t count) 646 { 647 struct i2c_client *client = to_i2c_client(dev); 648 struct adt7475_data *data = i2c_get_clientdata(client); 649 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 650 int temp; 651 long val; 652 653 if (kstrtol(buf, 10, &val)) 654 return -EINVAL; 655 656 mutex_lock(&data->lock); 657 658 /* Get a fresh copy of the needed registers */ 659 data->config5 = adt7475_read(REG_CONFIG5); 660 data->temp[AUTOMIN][sattr->index] = 661 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2; 662 data->range[sattr->index] = 663 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 664 665 /* 666 * The user will write an absolute value, so subtract the start point 667 * to figure the range 668 */ 669 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 670 val = clamp_val(val, temp + autorange_table[0], 671 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]); 672 val -= temp; 673 674 /* Find the nearest table entry to what the user wrote */ 675 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table)); 676 677 data->range[sattr->index] &= ~0xF0; 678 data->range[sattr->index] |= val << 4; 679 680 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 681 data->range[sattr->index]); 682 683 mutex_unlock(&data->lock); 684 return count; 685 } 686 687 static ssize_t show_tach(struct device *dev, struct device_attribute *attr, 688 char *buf) 689 { 690 struct adt7475_data *data = adt7475_update_device(dev); 691 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 692 int out; 693 694 if (IS_ERR(data)) 695 return PTR_ERR(data); 696 697 if (sattr->nr == ALARM) 698 out = (data->alarms >> (sattr->index + 10)) & 1; 699 else 700 out = tach2rpm(data->tach[sattr->nr][sattr->index]); 701 702 return sprintf(buf, "%d\n", out); 703 } 704 705 static ssize_t set_tach(struct device *dev, struct device_attribute *attr, 706 const char *buf, size_t count) 707 { 708 709 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 710 struct i2c_client *client = to_i2c_client(dev); 711 struct adt7475_data *data = i2c_get_clientdata(client); 712 unsigned long val; 713 714 if (kstrtoul(buf, 10, &val)) 715 return -EINVAL; 716 717 mutex_lock(&data->lock); 718 719 data->tach[MIN][sattr->index] = rpm2tach(val); 720 721 adt7475_write_word(client, TACH_MIN_REG(sattr->index), 722 data->tach[MIN][sattr->index]); 723 724 mutex_unlock(&data->lock); 725 return count; 726 } 727 728 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 729 char *buf) 730 { 731 struct adt7475_data *data = adt7475_update_device(dev); 732 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 733 734 if (IS_ERR(data)) 735 return PTR_ERR(data); 736 737 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]); 738 } 739 740 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr, 741 char *buf) 742 { 743 struct adt7475_data *data = adt7475_update_device(dev); 744 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 745 746 if (IS_ERR(data)) 747 return PTR_ERR(data); 748 749 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]); 750 } 751 752 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr, 753 char *buf) 754 { 755 struct adt7475_data *data = adt7475_update_device(dev); 756 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 757 758 if (IS_ERR(data)) 759 return PTR_ERR(data); 760 761 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]); 762 } 763 764 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 765 const char *buf, size_t count) 766 { 767 768 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 769 struct i2c_client *client = to_i2c_client(dev); 770 struct adt7475_data *data = i2c_get_clientdata(client); 771 unsigned char reg = 0; 772 long val; 773 774 if (kstrtol(buf, 10, &val)) 775 return -EINVAL; 776 777 mutex_lock(&data->lock); 778 779 switch (sattr->nr) { 780 case INPUT: 781 /* Get a fresh value for CONTROL */ 782 data->pwm[CONTROL][sattr->index] = 783 adt7475_read(PWM_CONFIG_REG(sattr->index)); 784 785 /* 786 * If we are not in manual mode, then we shouldn't allow 787 * the user to set the pwm speed 788 */ 789 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) { 790 mutex_unlock(&data->lock); 791 return count; 792 } 793 794 reg = PWM_REG(sattr->index); 795 break; 796 797 case MIN: 798 reg = PWM_MIN_REG(sattr->index); 799 break; 800 801 case MAX: 802 reg = PWM_MAX_REG(sattr->index); 803 break; 804 } 805 806 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF); 807 i2c_smbus_write_byte_data(client, reg, 808 data->pwm[sattr->nr][sattr->index]); 809 mutex_unlock(&data->lock); 810 811 return count; 812 } 813 814 static ssize_t show_stall_disable(struct device *dev, 815 struct device_attribute *attr, char *buf) 816 { 817 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 818 struct i2c_client *client = to_i2c_client(dev); 819 struct adt7475_data *data = i2c_get_clientdata(client); 820 u8 mask = BIT(5 + sattr->index); 821 822 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask)); 823 } 824 825 static ssize_t set_stall_disable(struct device *dev, 826 struct device_attribute *attr, const char *buf, 827 size_t count) 828 { 829 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 830 struct i2c_client *client = to_i2c_client(dev); 831 struct adt7475_data *data = i2c_get_clientdata(client); 832 long val; 833 u8 mask = BIT(5 + sattr->index); 834 835 if (kstrtol(buf, 10, &val)) 836 return -EINVAL; 837 838 mutex_lock(&data->lock); 839 840 data->enh_acoustics[0] &= ~mask; 841 if (val) 842 data->enh_acoustics[0] |= mask; 843 844 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1, 845 data->enh_acoustics[0]); 846 847 mutex_unlock(&data->lock); 848 849 return count; 850 } 851 852 /* Called by set_pwmctrl and set_pwmchan */ 853 854 static int hw_set_pwm(struct i2c_client *client, int index, 855 unsigned int pwmctl, unsigned int pwmchan) 856 { 857 struct adt7475_data *data = i2c_get_clientdata(client); 858 long val = 0; 859 860 switch (pwmctl) { 861 case 0: 862 val = 0x03; /* Run at full speed */ 863 break; 864 case 1: 865 val = 0x07; /* Manual mode */ 866 break; 867 case 2: 868 switch (pwmchan) { 869 case 1: 870 /* Remote1 controls PWM */ 871 val = 0x00; 872 break; 873 case 2: 874 /* local controls PWM */ 875 val = 0x01; 876 break; 877 case 4: 878 /* remote2 controls PWM */ 879 val = 0x02; 880 break; 881 case 6: 882 /* local/remote2 control PWM */ 883 val = 0x05; 884 break; 885 case 7: 886 /* All three control PWM */ 887 val = 0x06; 888 break; 889 default: 890 return -EINVAL; 891 } 892 break; 893 default: 894 return -EINVAL; 895 } 896 897 data->pwmctl[index] = pwmctl; 898 data->pwmchan[index] = pwmchan; 899 900 data->pwm[CONTROL][index] &= ~0xE0; 901 data->pwm[CONTROL][index] |= (val & 7) << 5; 902 903 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 904 data->pwm[CONTROL][index]); 905 906 return 0; 907 } 908 909 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr, 910 const char *buf, size_t count) 911 { 912 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 913 struct i2c_client *client = to_i2c_client(dev); 914 struct adt7475_data *data = i2c_get_clientdata(client); 915 int r; 916 long val; 917 918 if (kstrtol(buf, 10, &val)) 919 return -EINVAL; 920 921 mutex_lock(&data->lock); 922 /* Read Modify Write PWM values */ 923 adt7475_read_pwm(client, sattr->index); 924 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val); 925 if (r) 926 count = r; 927 mutex_unlock(&data->lock); 928 929 return count; 930 } 931 932 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr, 933 const char *buf, size_t count) 934 { 935 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 936 struct i2c_client *client = to_i2c_client(dev); 937 struct adt7475_data *data = i2c_get_clientdata(client); 938 int r; 939 long val; 940 941 if (kstrtol(buf, 10, &val)) 942 return -EINVAL; 943 944 mutex_lock(&data->lock); 945 /* Read Modify Write PWM values */ 946 adt7475_read_pwm(client, sattr->index); 947 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]); 948 if (r) 949 count = r; 950 mutex_unlock(&data->lock); 951 952 return count; 953 } 954 955 /* List of frequencies for the PWM */ 956 static const int pwmfreq_table[] = { 957 11, 14, 22, 29, 35, 44, 58, 88, 22500 958 }; 959 960 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr, 961 char *buf) 962 { 963 struct adt7475_data *data = adt7475_update_device(dev); 964 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 965 int i = clamp_val(data->range[sattr->index] & 0xf, 0, 966 ARRAY_SIZE(pwmfreq_table) - 1); 967 968 if (IS_ERR(data)) 969 return PTR_ERR(data); 970 971 return sprintf(buf, "%d\n", pwmfreq_table[i]); 972 } 973 974 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr, 975 const char *buf, size_t count) 976 { 977 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 978 struct i2c_client *client = to_i2c_client(dev); 979 struct adt7475_data *data = i2c_get_clientdata(client); 980 int out; 981 long val; 982 983 if (kstrtol(buf, 10, &val)) 984 return -EINVAL; 985 986 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table)); 987 988 mutex_lock(&data->lock); 989 990 data->range[sattr->index] = 991 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 992 data->range[sattr->index] &= ~0xf; 993 data->range[sattr->index] |= out; 994 995 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 996 data->range[sattr->index]); 997 998 mutex_unlock(&data->lock); 999 return count; 1000 } 1001 1002 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev, 1003 struct device_attribute *devattr, 1004 char *buf) 1005 { 1006 struct adt7475_data *data = adt7475_update_device(dev); 1007 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY)); 1008 } 1009 1010 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev, 1011 struct device_attribute *devattr, 1012 const char *buf, size_t count) 1013 { 1014 struct i2c_client *client = to_i2c_client(dev); 1015 struct adt7475_data *data = i2c_get_clientdata(client); 1016 long val; 1017 1018 if (kstrtol(buf, 10, &val)) 1019 return -EINVAL; 1020 if (val != 0 && val != 1) 1021 return -EINVAL; 1022 1023 mutex_lock(&data->lock); 1024 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4); 1025 if (val) 1026 data->config4 |= CONFIG4_MAXDUTY; 1027 else 1028 data->config4 &= ~CONFIG4_MAXDUTY; 1029 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4); 1030 mutex_unlock(&data->lock); 1031 1032 return count; 1033 } 1034 1035 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr, 1036 char *buf) 1037 { 1038 struct adt7475_data *data = dev_get_drvdata(dev); 1039 return sprintf(buf, "%d\n", (int)data->vrm); 1040 } 1041 1042 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr, 1043 const char *buf, size_t count) 1044 { 1045 struct adt7475_data *data = dev_get_drvdata(dev); 1046 long val; 1047 1048 if (kstrtol(buf, 10, &val)) 1049 return -EINVAL; 1050 if (val < 0 || val > 255) 1051 return -EINVAL; 1052 data->vrm = val; 1053 1054 return count; 1055 } 1056 1057 static ssize_t cpu0_vid_show(struct device *dev, 1058 struct device_attribute *devattr, char *buf) 1059 { 1060 struct adt7475_data *data = adt7475_update_device(dev); 1061 1062 if (IS_ERR(data)) 1063 return PTR_ERR(data); 1064 1065 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 1066 } 1067 1068 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0); 1069 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage, 1070 set_voltage, MAX, 0); 1071 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage, 1072 set_voltage, MIN, 0); 1073 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0); 1074 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1); 1075 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage, 1076 set_voltage, MAX, 1); 1077 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage, 1078 set_voltage, MIN, 1); 1079 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1); 1080 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2); 1081 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage, 1082 set_voltage, MAX, 2); 1083 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage, 1084 set_voltage, MIN, 2); 1085 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2); 1086 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3); 1087 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage, 1088 set_voltage, MAX, 3); 1089 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage, 1090 set_voltage, MIN, 3); 1091 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3); 1092 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4); 1093 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage, 1094 set_voltage, MAX, 4); 1095 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage, 1096 set_voltage, MIN, 4); 1097 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8); 1098 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5); 1099 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage, 1100 set_voltage, MAX, 5); 1101 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage, 1102 set_voltage, MIN, 5); 1103 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31); 1104 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0); 1105 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0); 1106 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0); 1107 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 1108 MAX, 0); 1109 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 1110 MIN, 0); 1111 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp, 1112 set_temp, OFFSET, 0); 1113 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR, 1114 show_temp, set_temp, AUTOMIN, 0); 1115 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR, 1116 show_point2, set_point2, 0, 0); 1117 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp, 1118 THERM, 0); 1119 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp, 1120 set_temp, HYSTERSIS, 0); 1121 static SENSOR_DEVICE_ATTR_2(temp1_smoothing, S_IRUGO | S_IWUSR, show_temp_st, 1122 set_temp_st, 0, 0); 1123 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1); 1124 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1); 1125 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 1126 MAX, 1); 1127 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 1128 MIN, 1); 1129 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp, 1130 set_temp, OFFSET, 1); 1131 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR, 1132 show_temp, set_temp, AUTOMIN, 1); 1133 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR, 1134 show_point2, set_point2, 0, 1); 1135 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp, 1136 THERM, 1); 1137 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp, 1138 set_temp, HYSTERSIS, 1); 1139 static SENSOR_DEVICE_ATTR_2(temp2_smoothing, S_IRUGO | S_IWUSR, show_temp_st, 1140 set_temp_st, 0, 1); 1141 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2); 1142 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2); 1143 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2); 1144 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 1145 MAX, 2); 1146 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 1147 MIN, 2); 1148 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp, 1149 set_temp, OFFSET, 2); 1150 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR, 1151 show_temp, set_temp, AUTOMIN, 2); 1152 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR, 1153 show_point2, set_point2, 0, 2); 1154 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp, 1155 THERM, 2); 1156 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp, 1157 set_temp, HYSTERSIS, 2); 1158 static SENSOR_DEVICE_ATTR_2(temp3_smoothing, S_IRUGO | S_IWUSR, show_temp_st, 1159 set_temp_st, 0, 2); 1160 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0); 1161 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach, 1162 MIN, 0); 1163 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0); 1164 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1); 1165 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach, 1166 MIN, 1); 1167 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1); 1168 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2); 1169 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach, 1170 MIN, 2); 1171 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2); 1172 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3); 1173 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach, 1174 MIN, 3); 1175 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3); 1176 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, 1177 0); 1178 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq, 1179 set_pwmfreq, INPUT, 0); 1180 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl, 1181 set_pwmctrl, INPUT, 0); 1182 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR, 1183 show_pwmchan, set_pwmchan, INPUT, 0); 1184 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm, 1185 set_pwm, MIN, 0); 1186 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm, 1187 set_pwm, MAX, 0); 1188 static SENSOR_DEVICE_ATTR_2(pwm1_stall_disable, S_IRUGO | S_IWUSR, 1189 show_stall_disable, set_stall_disable, 0, 0); 1190 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, 1191 1); 1192 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq, 1193 set_pwmfreq, INPUT, 1); 1194 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl, 1195 set_pwmctrl, INPUT, 1); 1196 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR, 1197 show_pwmchan, set_pwmchan, INPUT, 1); 1198 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm, 1199 set_pwm, MIN, 1); 1200 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm, 1201 set_pwm, MAX, 1); 1202 static SENSOR_DEVICE_ATTR_2(pwm2_stall_disable, S_IRUGO | S_IWUSR, 1203 show_stall_disable, set_stall_disable, 0, 1); 1204 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, 1205 2); 1206 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq, 1207 set_pwmfreq, INPUT, 2); 1208 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl, 1209 set_pwmctrl, INPUT, 2); 1210 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR, 1211 show_pwmchan, set_pwmchan, INPUT, 2); 1212 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm, 1213 set_pwm, MIN, 2); 1214 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm, 1215 set_pwm, MAX, 2); 1216 static SENSOR_DEVICE_ATTR_2(pwm3_stall_disable, S_IRUGO | S_IWUSR, 1217 show_stall_disable, set_stall_disable, 0, 2); 1218 1219 /* Non-standard name, might need revisiting */ 1220 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit); 1221 1222 static DEVICE_ATTR_RW(vrm); 1223 static DEVICE_ATTR_RO(cpu0_vid); 1224 1225 static struct attribute *adt7475_attrs[] = { 1226 &sensor_dev_attr_in1_input.dev_attr.attr, 1227 &sensor_dev_attr_in1_max.dev_attr.attr, 1228 &sensor_dev_attr_in1_min.dev_attr.attr, 1229 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1230 &sensor_dev_attr_in2_input.dev_attr.attr, 1231 &sensor_dev_attr_in2_max.dev_attr.attr, 1232 &sensor_dev_attr_in2_min.dev_attr.attr, 1233 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1234 &sensor_dev_attr_temp1_input.dev_attr.attr, 1235 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1236 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1237 &sensor_dev_attr_temp1_max.dev_attr.attr, 1238 &sensor_dev_attr_temp1_min.dev_attr.attr, 1239 &sensor_dev_attr_temp1_offset.dev_attr.attr, 1240 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, 1241 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, 1242 &sensor_dev_attr_temp1_crit.dev_attr.attr, 1243 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, 1244 &sensor_dev_attr_temp1_smoothing.dev_attr.attr, 1245 &sensor_dev_attr_temp2_input.dev_attr.attr, 1246 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1247 &sensor_dev_attr_temp2_max.dev_attr.attr, 1248 &sensor_dev_attr_temp2_min.dev_attr.attr, 1249 &sensor_dev_attr_temp2_offset.dev_attr.attr, 1250 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, 1251 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, 1252 &sensor_dev_attr_temp2_crit.dev_attr.attr, 1253 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr, 1254 &sensor_dev_attr_temp2_smoothing.dev_attr.attr, 1255 &sensor_dev_attr_temp3_input.dev_attr.attr, 1256 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1257 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1258 &sensor_dev_attr_temp3_max.dev_attr.attr, 1259 &sensor_dev_attr_temp3_min.dev_attr.attr, 1260 &sensor_dev_attr_temp3_offset.dev_attr.attr, 1261 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr, 1262 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr, 1263 &sensor_dev_attr_temp3_crit.dev_attr.attr, 1264 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr, 1265 &sensor_dev_attr_temp3_smoothing.dev_attr.attr, 1266 &sensor_dev_attr_fan1_input.dev_attr.attr, 1267 &sensor_dev_attr_fan1_min.dev_attr.attr, 1268 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1269 &sensor_dev_attr_fan2_input.dev_attr.attr, 1270 &sensor_dev_attr_fan2_min.dev_attr.attr, 1271 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1272 &sensor_dev_attr_fan3_input.dev_attr.attr, 1273 &sensor_dev_attr_fan3_min.dev_attr.attr, 1274 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1275 &sensor_dev_attr_pwm1.dev_attr.attr, 1276 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 1277 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1278 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1279 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1280 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1281 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr, 1282 &sensor_dev_attr_pwm3.dev_attr.attr, 1283 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1284 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1285 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1286 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1287 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1288 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr, 1289 &dev_attr_pwm_use_point2_pwm_at_crit.attr, 1290 NULL, 1291 }; 1292 1293 static struct attribute *fan4_attrs[] = { 1294 &sensor_dev_attr_fan4_input.dev_attr.attr, 1295 &sensor_dev_attr_fan4_min.dev_attr.attr, 1296 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1297 NULL 1298 }; 1299 1300 static struct attribute *pwm2_attrs[] = { 1301 &sensor_dev_attr_pwm2.dev_attr.attr, 1302 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1303 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1304 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1305 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1306 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1307 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr, 1308 NULL 1309 }; 1310 1311 static struct attribute *in0_attrs[] = { 1312 &sensor_dev_attr_in0_input.dev_attr.attr, 1313 &sensor_dev_attr_in0_max.dev_attr.attr, 1314 &sensor_dev_attr_in0_min.dev_attr.attr, 1315 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1316 NULL 1317 }; 1318 1319 static struct attribute *in3_attrs[] = { 1320 &sensor_dev_attr_in3_input.dev_attr.attr, 1321 &sensor_dev_attr_in3_max.dev_attr.attr, 1322 &sensor_dev_attr_in3_min.dev_attr.attr, 1323 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1324 NULL 1325 }; 1326 1327 static struct attribute *in4_attrs[] = { 1328 &sensor_dev_attr_in4_input.dev_attr.attr, 1329 &sensor_dev_attr_in4_max.dev_attr.attr, 1330 &sensor_dev_attr_in4_min.dev_attr.attr, 1331 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1332 NULL 1333 }; 1334 1335 static struct attribute *in5_attrs[] = { 1336 &sensor_dev_attr_in5_input.dev_attr.attr, 1337 &sensor_dev_attr_in5_max.dev_attr.attr, 1338 &sensor_dev_attr_in5_min.dev_attr.attr, 1339 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1340 NULL 1341 }; 1342 1343 static struct attribute *vid_attrs[] = { 1344 &dev_attr_cpu0_vid.attr, 1345 &dev_attr_vrm.attr, 1346 NULL 1347 }; 1348 1349 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs }; 1350 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs }; 1351 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs }; 1352 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs }; 1353 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs }; 1354 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs }; 1355 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs }; 1356 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs }; 1357 1358 static int adt7475_detect(struct i2c_client *client, 1359 struct i2c_board_info *info) 1360 { 1361 struct i2c_adapter *adapter = client->adapter; 1362 int vendid, devid, devid2; 1363 const char *name; 1364 1365 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1366 return -ENODEV; 1367 1368 vendid = adt7475_read(REG_VENDID); 1369 devid2 = adt7475_read(REG_DEVID2); 1370 if (vendid != 0x41 || /* Analog Devices */ 1371 (devid2 & 0xf8) != 0x68) 1372 return -ENODEV; 1373 1374 devid = adt7475_read(REG_DEVID); 1375 if (devid == 0x73) 1376 name = "adt7473"; 1377 else if (devid == 0x75 && client->addr == 0x2e) 1378 name = "adt7475"; 1379 else if (devid == 0x76) 1380 name = "adt7476"; 1381 else if ((devid2 & 0xfc) == 0x6c) 1382 name = "adt7490"; 1383 else { 1384 dev_dbg(&adapter->dev, 1385 "Couldn't detect an ADT7473/75/76/90 part at " 1386 "0x%02x\n", (unsigned int)client->addr); 1387 return -ENODEV; 1388 } 1389 1390 strlcpy(info->type, name, I2C_NAME_SIZE); 1391 1392 return 0; 1393 } 1394 1395 static void adt7475_remove_files(struct i2c_client *client, 1396 struct adt7475_data *data) 1397 { 1398 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group); 1399 if (data->has_fan4) 1400 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group); 1401 if (data->has_pwm2) 1402 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group); 1403 if (data->has_voltage & (1 << 0)) 1404 sysfs_remove_group(&client->dev.kobj, &in0_attr_group); 1405 if (data->has_voltage & (1 << 3)) 1406 sysfs_remove_group(&client->dev.kobj, &in3_attr_group); 1407 if (data->has_voltage & (1 << 4)) 1408 sysfs_remove_group(&client->dev.kobj, &in4_attr_group); 1409 if (data->has_voltage & (1 << 5)) 1410 sysfs_remove_group(&client->dev.kobj, &in5_attr_group); 1411 if (data->has_vid) 1412 sysfs_remove_group(&client->dev.kobj, &vid_attr_group); 1413 } 1414 1415 static int adt7475_update_limits(struct i2c_client *client) 1416 { 1417 struct adt7475_data *data = i2c_get_clientdata(client); 1418 int i; 1419 int ret; 1420 1421 ret = adt7475_read(REG_CONFIG4); 1422 if (ret < 0) 1423 return ret; 1424 data->config4 = ret; 1425 1426 ret = adt7475_read(REG_CONFIG5); 1427 if (ret < 0) 1428 return ret; 1429 data->config5 = ret; 1430 1431 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1432 if (!(data->has_voltage & (1 << i))) 1433 continue; 1434 /* Adjust values so they match the input precision */ 1435 ret = adt7475_read(VOLTAGE_MIN_REG(i)); 1436 if (ret < 0) 1437 return ret; 1438 data->voltage[MIN][i] = ret << 2; 1439 1440 ret = adt7475_read(VOLTAGE_MAX_REG(i)); 1441 if (ret < 0) 1442 return ret; 1443 data->voltage[MAX][i] = ret << 2; 1444 } 1445 1446 if (data->has_voltage & (1 << 5)) { 1447 ret = adt7475_read(REG_VTT_MIN); 1448 if (ret < 0) 1449 return ret; 1450 data->voltage[MIN][5] = ret << 2; 1451 1452 ret = adt7475_read(REG_VTT_MAX); 1453 if (ret < 0) 1454 return ret; 1455 data->voltage[MAX][5] = ret << 2; 1456 } 1457 1458 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 1459 /* Adjust values so they match the input precision */ 1460 ret = adt7475_read(TEMP_MIN_REG(i)); 1461 if (ret < 0) 1462 return ret; 1463 data->temp[MIN][i] = ret << 2; 1464 1465 ret = adt7475_read(TEMP_MAX_REG(i)); 1466 if (ret < 0) 1467 return ret; 1468 data->temp[MAX][i] = ret << 2; 1469 1470 ret = adt7475_read(TEMP_TMIN_REG(i)); 1471 if (ret < 0) 1472 return ret; 1473 data->temp[AUTOMIN][i] = ret << 2; 1474 1475 ret = adt7475_read(TEMP_THERM_REG(i)); 1476 if (ret < 0) 1477 return ret; 1478 data->temp[THERM][i] = ret << 2; 1479 1480 ret = adt7475_read(TEMP_OFFSET_REG(i)); 1481 if (ret < 0) 1482 return ret; 1483 data->temp[OFFSET][i] = ret; 1484 } 1485 adt7475_read_hystersis(client); 1486 1487 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 1488 if (i == 3 && !data->has_fan4) 1489 continue; 1490 ret = adt7475_read_word(client, TACH_MIN_REG(i)); 1491 if (ret < 0) 1492 return ret; 1493 data->tach[MIN][i] = ret; 1494 } 1495 1496 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1497 if (i == 1 && !data->has_pwm2) 1498 continue; 1499 ret = adt7475_read(PWM_MAX_REG(i)); 1500 if (ret < 0) 1501 return ret; 1502 data->pwm[MAX][i] = ret; 1503 1504 ret = adt7475_read(PWM_MIN_REG(i)); 1505 if (ret < 0) 1506 return ret; 1507 data->pwm[MIN][i] = ret; 1508 /* Set the channel and control information */ 1509 adt7475_read_pwm(client, i); 1510 } 1511 1512 ret = adt7475_read(TEMP_TRANGE_REG(0)); 1513 if (ret < 0) 1514 return ret; 1515 data->range[0] = ret; 1516 1517 ret = adt7475_read(TEMP_TRANGE_REG(1)); 1518 if (ret < 0) 1519 return ret; 1520 data->range[1] = ret; 1521 1522 ret = adt7475_read(TEMP_TRANGE_REG(2)); 1523 if (ret < 0) 1524 return ret; 1525 data->range[2] = ret; 1526 1527 return 0; 1528 } 1529 1530 static int adt7475_probe(struct i2c_client *client, 1531 const struct i2c_device_id *id) 1532 { 1533 enum chips chip; 1534 static const char * const names[] = { 1535 [adt7473] = "ADT7473", 1536 [adt7475] = "ADT7475", 1537 [adt7476] = "ADT7476", 1538 [adt7490] = "ADT7490", 1539 }; 1540 1541 struct adt7475_data *data; 1542 int i, ret = 0, revision; 1543 u8 config2, config3; 1544 1545 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); 1546 if (data == NULL) 1547 return -ENOMEM; 1548 1549 mutex_init(&data->lock); 1550 i2c_set_clientdata(client, data); 1551 1552 if (client->dev.of_node) 1553 chip = (enum chips)of_device_get_match_data(&client->dev); 1554 else 1555 chip = id->driver_data; 1556 1557 /* Initialize device-specific values */ 1558 switch (chip) { 1559 case adt7476: 1560 data->has_voltage = 0x0e; /* in1 to in3 */ 1561 revision = adt7475_read(REG_DEVID2) & 0x07; 1562 break; 1563 case adt7490: 1564 data->has_voltage = 0x3e; /* in1 to in5 */ 1565 revision = adt7475_read(REG_DEVID2) & 0x03; 1566 if (revision == 0x03) 1567 revision += adt7475_read(REG_DEVREV2); 1568 break; 1569 default: 1570 data->has_voltage = 0x06; /* in1, in2 */ 1571 revision = adt7475_read(REG_DEVID2) & 0x07; 1572 } 1573 1574 config3 = adt7475_read(REG_CONFIG3); 1575 /* Pin PWM2 may alternatively be used for ALERT output */ 1576 if (!(config3 & CONFIG3_SMBALERT)) 1577 data->has_pwm2 = 1; 1578 /* Meaning of this bit is inverted for the ADT7473-1 */ 1579 if (id->driver_data == adt7473 && revision >= 1) 1580 data->has_pwm2 = !data->has_pwm2; 1581 1582 data->config4 = adt7475_read(REG_CONFIG4); 1583 /* Pin TACH4 may alternatively be used for THERM */ 1584 if ((data->config4 & CONFIG4_PINFUNC) == 0x0) 1585 data->has_fan4 = 1; 1586 1587 /* 1588 * THERM configuration is more complex on the ADT7476 and ADT7490, 1589 * because 2 different pins (TACH4 and +2.5 Vin) can be used for 1590 * this function 1591 */ 1592 if (id->driver_data == adt7490) { 1593 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 && 1594 !(config3 & CONFIG3_THERM)) 1595 data->has_fan4 = 1; 1596 } 1597 if (id->driver_data == adt7476 || id->driver_data == adt7490) { 1598 if (!(config3 & CONFIG3_THERM) || 1599 (data->config4 & CONFIG4_PINFUNC) == 0x1) 1600 data->has_voltage |= (1 << 0); /* in0 */ 1601 } 1602 1603 /* 1604 * On the ADT7476, the +12V input pin may instead be used as VID5, 1605 * and VID pins may alternatively be used as GPIO 1606 */ 1607 if (id->driver_data == adt7476) { 1608 u8 vid = adt7475_read(REG_VID); 1609 if (!(vid & VID_VIDSEL)) 1610 data->has_voltage |= (1 << 4); /* in4 */ 1611 1612 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO); 1613 } 1614 1615 /* Voltage attenuators can be bypassed, globally or individually */ 1616 config2 = adt7475_read(REG_CONFIG2); 1617 if (config2 & CONFIG2_ATTN) { 1618 data->bypass_attn = (0x3 << 3) | 0x3; 1619 } else { 1620 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) | 1621 ((data->config4 & CONFIG4_ATTN_IN43) >> 3); 1622 } 1623 data->bypass_attn &= data->has_voltage; 1624 1625 /* 1626 * Call adt7475_read_pwm for all pwm's as this will reprogram any 1627 * pwm's which are disabled to manual mode with 0% duty cycle 1628 */ 1629 for (i = 0; i < ADT7475_PWM_COUNT; i++) 1630 adt7475_read_pwm(client, i); 1631 1632 /* Start monitoring */ 1633 switch (chip) { 1634 case adt7475: 1635 case adt7476: 1636 i2c_smbus_write_byte_data(client, REG_CONFIG1, 1637 adt7475_read(REG_CONFIG1) | 0x01); 1638 break; 1639 default: 1640 break; 1641 } 1642 1643 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group); 1644 if (ret) 1645 return ret; 1646 1647 /* Features that can be disabled individually */ 1648 if (data->has_fan4) { 1649 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group); 1650 if (ret) 1651 goto eremove; 1652 } 1653 if (data->has_pwm2) { 1654 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group); 1655 if (ret) 1656 goto eremove; 1657 } 1658 if (data->has_voltage & (1 << 0)) { 1659 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group); 1660 if (ret) 1661 goto eremove; 1662 } 1663 if (data->has_voltage & (1 << 3)) { 1664 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group); 1665 if (ret) 1666 goto eremove; 1667 } 1668 if (data->has_voltage & (1 << 4)) { 1669 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group); 1670 if (ret) 1671 goto eremove; 1672 } 1673 if (data->has_voltage & (1 << 5)) { 1674 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group); 1675 if (ret) 1676 goto eremove; 1677 } 1678 if (data->has_vid) { 1679 data->vrm = vid_which_vrm(); 1680 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group); 1681 if (ret) 1682 goto eremove; 1683 } 1684 1685 data->hwmon_dev = hwmon_device_register(&client->dev); 1686 if (IS_ERR(data->hwmon_dev)) { 1687 ret = PTR_ERR(data->hwmon_dev); 1688 goto eremove; 1689 } 1690 1691 dev_info(&client->dev, "%s device, revision %d\n", 1692 names[id->driver_data], revision); 1693 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2) 1694 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n", 1695 (data->has_voltage & (1 << 0)) ? " in0" : "", 1696 (data->has_voltage & (1 << 4)) ? " in4" : "", 1697 data->has_fan4 ? " fan4" : "", 1698 data->has_pwm2 ? " pwm2" : "", 1699 data->has_vid ? " vid" : ""); 1700 if (data->bypass_attn) 1701 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n", 1702 (data->bypass_attn & (1 << 0)) ? " in0" : "", 1703 (data->bypass_attn & (1 << 1)) ? " in1" : "", 1704 (data->bypass_attn & (1 << 3)) ? " in3" : "", 1705 (data->bypass_attn & (1 << 4)) ? " in4" : ""); 1706 1707 /* Limits and settings, should never change update more than once */ 1708 ret = adt7475_update_limits(client); 1709 if (ret) 1710 goto eremove; 1711 1712 return 0; 1713 1714 eremove: 1715 adt7475_remove_files(client, data); 1716 return ret; 1717 } 1718 1719 static int adt7475_remove(struct i2c_client *client) 1720 { 1721 struct adt7475_data *data = i2c_get_clientdata(client); 1722 1723 hwmon_device_unregister(data->hwmon_dev); 1724 adt7475_remove_files(client, data); 1725 1726 return 0; 1727 } 1728 1729 static struct i2c_driver adt7475_driver = { 1730 .class = I2C_CLASS_HWMON, 1731 .driver = { 1732 .name = "adt7475", 1733 .of_match_table = of_match_ptr(adt7475_of_match), 1734 }, 1735 .probe = adt7475_probe, 1736 .remove = adt7475_remove, 1737 .id_table = adt7475_id, 1738 .detect = adt7475_detect, 1739 .address_list = normal_i2c, 1740 }; 1741 1742 static void adt7475_read_hystersis(struct i2c_client *client) 1743 { 1744 struct adt7475_data *data = i2c_get_clientdata(client); 1745 1746 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS); 1747 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0]; 1748 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS); 1749 } 1750 1751 static void adt7475_read_pwm(struct i2c_client *client, int index) 1752 { 1753 struct adt7475_data *data = i2c_get_clientdata(client); 1754 unsigned int v; 1755 1756 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index)); 1757 1758 /* 1759 * Figure out the internal value for pwmctrl and pwmchan 1760 * based on the current settings 1761 */ 1762 v = (data->pwm[CONTROL][index] >> 5) & 7; 1763 1764 if (v == 3) 1765 data->pwmctl[index] = 0; 1766 else if (v == 7) 1767 data->pwmctl[index] = 1; 1768 else if (v == 4) { 1769 /* 1770 * The fan is disabled - we don't want to 1771 * support that, so change to manual mode and 1772 * set the duty cycle to 0 instead 1773 */ 1774 data->pwm[INPUT][index] = 0; 1775 data->pwm[CONTROL][index] &= ~0xE0; 1776 data->pwm[CONTROL][index] |= (7 << 5); 1777 1778 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 1779 data->pwm[INPUT][index]); 1780 1781 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 1782 data->pwm[CONTROL][index]); 1783 1784 data->pwmctl[index] = 1; 1785 } else { 1786 data->pwmctl[index] = 2; 1787 1788 switch (v) { 1789 case 0: 1790 data->pwmchan[index] = 1; 1791 break; 1792 case 1: 1793 data->pwmchan[index] = 2; 1794 break; 1795 case 2: 1796 data->pwmchan[index] = 4; 1797 break; 1798 case 5: 1799 data->pwmchan[index] = 6; 1800 break; 1801 case 6: 1802 data->pwmchan[index] = 7; 1803 break; 1804 } 1805 } 1806 } 1807 1808 static int adt7475_update_measure(struct device *dev) 1809 { 1810 struct i2c_client *client = to_i2c_client(dev); 1811 struct adt7475_data *data = i2c_get_clientdata(client); 1812 u16 ext; 1813 int i; 1814 int ret; 1815 1816 ret = adt7475_read(REG_STATUS2); 1817 if (ret < 0) 1818 return ret; 1819 data->alarms = ret << 8; 1820 1821 ret = adt7475_read(REG_STATUS1); 1822 if (ret < 0) 1823 return ret; 1824 data->alarms |= ret; 1825 1826 ret = adt7475_read(REG_EXTEND2); 1827 if (ret < 0) 1828 return ret; 1829 1830 ext = (ret << 8); 1831 1832 ret = adt7475_read(REG_EXTEND1); 1833 if (ret < 0) 1834 return ret; 1835 1836 ext |= ret; 1837 1838 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1839 if (!(data->has_voltage & (1 << i))) 1840 continue; 1841 ret = adt7475_read(VOLTAGE_REG(i)); 1842 if (ret < 0) 1843 return ret; 1844 data->voltage[INPUT][i] = 1845 (ret << 2) | 1846 ((ext >> (i * 2)) & 3); 1847 } 1848 1849 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 1850 ret = adt7475_read(TEMP_REG(i)); 1851 if (ret < 0) 1852 return ret; 1853 data->temp[INPUT][i] = 1854 (ret << 2) | 1855 ((ext >> ((i + 5) * 2)) & 3); 1856 } 1857 1858 if (data->has_voltage & (1 << 5)) { 1859 ret = adt7475_read(REG_STATUS4); 1860 if (ret < 0) 1861 return ret; 1862 data->alarms |= ret << 24; 1863 1864 ret = adt7475_read(REG_EXTEND3); 1865 if (ret < 0) 1866 return ret; 1867 ext = ret; 1868 1869 ret = adt7475_read(REG_VTT); 1870 if (ret < 0) 1871 return ret; 1872 data->voltage[INPUT][5] = ret << 2 | 1873 ((ext >> 4) & 3); 1874 } 1875 1876 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 1877 if (i == 3 && !data->has_fan4) 1878 continue; 1879 ret = adt7475_read_word(client, TACH_REG(i)); 1880 if (ret < 0) 1881 return ret; 1882 data->tach[INPUT][i] = ret; 1883 } 1884 1885 /* Updated by hw when in auto mode */ 1886 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1887 if (i == 1 && !data->has_pwm2) 1888 continue; 1889 ret = adt7475_read(PWM_REG(i)); 1890 if (ret < 0) 1891 return ret; 1892 data->pwm[INPUT][i] = ret; 1893 } 1894 1895 if (data->has_vid) { 1896 ret = adt7475_read(REG_VID); 1897 if (ret < 0) 1898 return ret; 1899 data->vid = ret & 0x3f; 1900 } 1901 1902 return 0; 1903 } 1904 1905 static struct adt7475_data *adt7475_update_device(struct device *dev) 1906 { 1907 struct i2c_client *client = to_i2c_client(dev); 1908 struct adt7475_data *data = i2c_get_clientdata(client); 1909 int ret; 1910 1911 mutex_lock(&data->lock); 1912 1913 /* Measurement values update every 2 seconds */ 1914 if (time_after(jiffies, data->measure_updated + HZ * 2) || 1915 !data->valid) { 1916 ret = adt7475_update_measure(dev); 1917 if (ret) { 1918 data->valid = false; 1919 mutex_unlock(&data->lock); 1920 return ERR_PTR(ret); 1921 } 1922 data->measure_updated = jiffies; 1923 data->valid = true; 1924 } 1925 1926 mutex_unlock(&data->lock); 1927 1928 return data; 1929 } 1930 1931 module_i2c_driver(adt7475_driver); 1932 1933 MODULE_AUTHOR("Advanced Micro Devices, Inc"); 1934 MODULE_DESCRIPTION("adt7475 driver"); 1935 MODULE_LICENSE("GPL"); 1936