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 <khali@linux-fr.org> 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/init.h> 17 #include <linux/slab.h> 18 #include <linux/i2c.h> 19 #include <linux/hwmon.h> 20 #include <linux/hwmon-sysfs.h> 21 #include <linux/hwmon-vid.h> 22 #include <linux/err.h> 23 24 /* Indexes for the sysfs hooks */ 25 26 #define INPUT 0 27 #define MIN 1 28 #define MAX 2 29 #define CONTROL 3 30 #define OFFSET 3 31 #define AUTOMIN 4 32 #define THERM 5 33 #define HYSTERSIS 6 34 35 /* 36 * These are unique identifiers for the sysfs functions - unlike the 37 * numbers above, these are not also indexes into an array 38 */ 39 40 #define ALARM 9 41 #define FAULT 10 42 43 /* 7475 Common Registers */ 44 45 #define REG_DEVREV2 0x12 /* ADT7490 only */ 46 47 #define REG_VTT 0x1E /* ADT7490 only */ 48 #define REG_EXTEND3 0x1F /* ADT7490 only */ 49 50 #define REG_VOLTAGE_BASE 0x20 51 #define REG_TEMP_BASE 0x25 52 #define REG_TACH_BASE 0x28 53 #define REG_PWM_BASE 0x30 54 #define REG_PWM_MAX_BASE 0x38 55 56 #define REG_DEVID 0x3D 57 #define REG_VENDID 0x3E 58 #define REG_DEVID2 0x3F 59 60 #define REG_STATUS1 0x41 61 #define REG_STATUS2 0x42 62 63 #define REG_VID 0x43 /* ADT7476 only */ 64 65 #define REG_VOLTAGE_MIN_BASE 0x44 66 #define REG_VOLTAGE_MAX_BASE 0x45 67 68 #define REG_TEMP_MIN_BASE 0x4E 69 #define REG_TEMP_MAX_BASE 0x4F 70 71 #define REG_TACH_MIN_BASE 0x54 72 73 #define REG_PWM_CONFIG_BASE 0x5C 74 75 #define REG_TEMP_TRANGE_BASE 0x5F 76 77 #define REG_PWM_MIN_BASE 0x64 78 79 #define REG_TEMP_TMIN_BASE 0x67 80 #define REG_TEMP_THERM_BASE 0x6A 81 82 #define REG_REMOTE1_HYSTERSIS 0x6D 83 #define REG_REMOTE2_HYSTERSIS 0x6E 84 85 #define REG_TEMP_OFFSET_BASE 0x70 86 87 #define REG_CONFIG2 0x73 88 89 #define REG_EXTEND1 0x76 90 #define REG_EXTEND2 0x77 91 92 #define REG_CONFIG3 0x78 93 #define REG_CONFIG5 0x7C 94 #define REG_CONFIG4 0x7D 95 96 #define REG_STATUS4 0x81 /* ADT7490 only */ 97 98 #define REG_VTT_MIN 0x84 /* ADT7490 only */ 99 #define REG_VTT_MAX 0x86 /* ADT7490 only */ 100 101 #define VID_VIDSEL 0x80 /* ADT7476 only */ 102 103 #define CONFIG2_ATTN 0x20 104 105 #define CONFIG3_SMBALERT 0x01 106 #define CONFIG3_THERM 0x02 107 108 #define CONFIG4_PINFUNC 0x03 109 #define CONFIG4_MAXDUTY 0x08 110 #define CONFIG4_ATTN_IN10 0x30 111 #define CONFIG4_ATTN_IN43 0xC0 112 113 #define CONFIG5_TWOSCOMP 0x01 114 #define CONFIG5_TEMPOFFSET 0x02 115 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */ 116 117 /* ADT7475 Settings */ 118 119 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */ 120 #define ADT7475_TEMP_COUNT 3 121 #define ADT7475_TACH_COUNT 4 122 #define ADT7475_PWM_COUNT 3 123 124 /* Macro to read the registers */ 125 126 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg)) 127 128 /* Macros to easily index the registers */ 129 130 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2)) 131 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2)) 132 133 #define PWM_REG(idx) (REG_PWM_BASE + (idx)) 134 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx)) 135 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx)) 136 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx)) 137 138 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx)) 139 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2)) 140 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2)) 141 142 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx)) 143 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2)) 144 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2)) 145 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx)) 146 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx)) 147 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx)) 148 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx)) 149 150 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 151 152 enum chips { adt7473, adt7475, adt7476, adt7490 }; 153 154 static const struct i2c_device_id adt7475_id[] = { 155 { "adt7473", adt7473 }, 156 { "adt7475", adt7475 }, 157 { "adt7476", adt7476 }, 158 { "adt7490", adt7490 }, 159 { } 160 }; 161 MODULE_DEVICE_TABLE(i2c, adt7475_id); 162 163 struct adt7475_data { 164 struct device *hwmon_dev; 165 struct mutex lock; 166 167 unsigned long measure_updated; 168 unsigned long limits_updated; 169 char valid; 170 171 u8 config4; 172 u8 config5; 173 u8 has_voltage; 174 u8 bypass_attn; /* Bypass voltage attenuator */ 175 u8 has_pwm2:1; 176 u8 has_fan4:1; 177 u8 has_vid:1; 178 u32 alarms; 179 u16 voltage[3][6]; 180 u16 temp[7][3]; 181 u16 tach[2][4]; 182 u8 pwm[4][3]; 183 u8 range[3]; 184 u8 pwmctl[3]; 185 u8 pwmchan[3]; 186 187 u8 vid; 188 u8 vrm; 189 }; 190 191 static struct i2c_driver adt7475_driver; 192 static struct adt7475_data *adt7475_update_device(struct device *dev); 193 static void adt7475_read_hystersis(struct i2c_client *client); 194 static void adt7475_read_pwm(struct i2c_client *client, int index); 195 196 /* Given a temp value, convert it to register value */ 197 198 static inline u16 temp2reg(struct adt7475_data *data, long val) 199 { 200 u16 ret; 201 202 if (!(data->config5 & CONFIG5_TWOSCOMP)) { 203 val = SENSORS_LIMIT(val, -64000, 191000); 204 ret = (val + 64500) / 1000; 205 } else { 206 val = SENSORS_LIMIT(val, -128000, 127000); 207 if (val < -500) 208 ret = (256500 + val) / 1000; 209 else 210 ret = (val + 500) / 1000; 211 } 212 213 return ret << 2; 214 } 215 216 /* Given a register value, convert it to a real temp value */ 217 218 static inline int reg2temp(struct adt7475_data *data, u16 reg) 219 { 220 if (data->config5 & CONFIG5_TWOSCOMP) { 221 if (reg >= 512) 222 return (reg - 1024) * 250; 223 else 224 return reg * 250; 225 } else 226 return (reg - 256) * 250; 227 } 228 229 static inline int tach2rpm(u16 tach) 230 { 231 if (tach == 0 || tach == 0xFFFF) 232 return 0; 233 234 return (90000 * 60) / tach; 235 } 236 237 static inline u16 rpm2tach(unsigned long rpm) 238 { 239 if (rpm == 0) 240 return 0; 241 242 return SENSORS_LIMIT((90000 * 60) / rpm, 1, 0xFFFF); 243 } 244 245 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */ 246 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = { 247 { 45, 94 }, /* +2.5V */ 248 { 175, 525 }, /* Vccp */ 249 { 68, 71 }, /* Vcc */ 250 { 93, 47 }, /* +5V */ 251 { 120, 20 }, /* +12V */ 252 { 45, 45 }, /* Vtt */ 253 }; 254 255 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn) 256 { 257 const int *r = adt7473_in_scaling[channel]; 258 259 if (bypass_attn & (1 << channel)) 260 return DIV_ROUND_CLOSEST(reg * 2250, 1024); 261 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024); 262 } 263 264 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn) 265 { 266 const int *r = adt7473_in_scaling[channel]; 267 long reg; 268 269 if (bypass_attn & (1 << channel)) 270 reg = (volt * 1024) / 2250; 271 else 272 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250); 273 return SENSORS_LIMIT(reg, 0, 1023) & (0xff << 2); 274 } 275 276 static u16 adt7475_read_word(struct i2c_client *client, int reg) 277 { 278 u16 val; 279 280 val = i2c_smbus_read_byte_data(client, reg); 281 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8); 282 283 return val; 284 } 285 286 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val) 287 { 288 i2c_smbus_write_byte_data(client, reg + 1, val >> 8); 289 i2c_smbus_write_byte_data(client, reg, val & 0xFF); 290 } 291 292 /* 293 * Find the nearest value in a table - used for pwm frequency and 294 * auto temp range 295 */ 296 static int find_nearest(long val, const int *array, int size) 297 { 298 int i; 299 300 if (val < array[0]) 301 return 0; 302 303 if (val > array[size - 1]) 304 return size - 1; 305 306 for (i = 0; i < size - 1; i++) { 307 int a, b; 308 309 if (val > array[i + 1]) 310 continue; 311 312 a = val - array[i]; 313 b = array[i + 1] - val; 314 315 return (a <= b) ? i : i + 1; 316 } 317 318 return 0; 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 switch (sattr->nr) { 329 case ALARM: 330 return sprintf(buf, "%d\n", 331 (data->alarms >> sattr->index) & 1); 332 default: 333 val = data->voltage[sattr->nr][sattr->index]; 334 return sprintf(buf, "%d\n", 335 reg2volt(sattr->index, val, data->bypass_attn)); 336 } 337 } 338 339 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr, 340 const char *buf, size_t count) 341 { 342 343 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 344 struct i2c_client *client = to_i2c_client(dev); 345 struct adt7475_data *data = i2c_get_clientdata(client); 346 unsigned char reg; 347 long val; 348 349 if (kstrtol(buf, 10, &val)) 350 return -EINVAL; 351 352 mutex_lock(&data->lock); 353 354 data->voltage[sattr->nr][sattr->index] = 355 volt2reg(sattr->index, val, data->bypass_attn); 356 357 if (sattr->index < ADT7475_VOLTAGE_COUNT) { 358 if (sattr->nr == MIN) 359 reg = VOLTAGE_MIN_REG(sattr->index); 360 else 361 reg = VOLTAGE_MAX_REG(sattr->index); 362 } else { 363 if (sattr->nr == MIN) 364 reg = REG_VTT_MIN; 365 else 366 reg = REG_VTT_MAX; 367 } 368 369 i2c_smbus_write_byte_data(client, reg, 370 data->voltage[sattr->nr][sattr->index] >> 2); 371 mutex_unlock(&data->lock); 372 373 return count; 374 } 375 376 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 377 char *buf) 378 { 379 struct adt7475_data *data = adt7475_update_device(dev); 380 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 381 int out; 382 383 switch (sattr->nr) { 384 case HYSTERSIS: 385 mutex_lock(&data->lock); 386 out = data->temp[sattr->nr][sattr->index]; 387 if (sattr->index != 1) 388 out = (out >> 4) & 0xF; 389 else 390 out = (out & 0xF); 391 /* 392 * Show the value as an absolute number tied to 393 * THERM 394 */ 395 out = reg2temp(data, data->temp[THERM][sattr->index]) - 396 out * 1000; 397 mutex_unlock(&data->lock); 398 break; 399 400 case OFFSET: 401 /* 402 * Offset is always 2's complement, regardless of the 403 * setting in CONFIG5 404 */ 405 mutex_lock(&data->lock); 406 out = (s8)data->temp[sattr->nr][sattr->index]; 407 if (data->config5 & CONFIG5_TEMPOFFSET) 408 out *= 1000; 409 else 410 out *= 500; 411 mutex_unlock(&data->lock); 412 break; 413 414 case ALARM: 415 out = (data->alarms >> (sattr->index + 4)) & 1; 416 break; 417 418 case FAULT: 419 /* Note - only for remote1 and remote2 */ 420 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000)); 421 break; 422 423 default: 424 /* All other temp values are in the configured format */ 425 out = reg2temp(data, data->temp[sattr->nr][sattr->index]); 426 } 427 428 return sprintf(buf, "%d\n", out); 429 } 430 431 static ssize_t set_temp(struct device *dev, struct device_attribute *attr, 432 const char *buf, size_t count) 433 { 434 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 435 struct i2c_client *client = to_i2c_client(dev); 436 struct adt7475_data *data = i2c_get_clientdata(client); 437 unsigned char reg = 0; 438 u8 out; 439 int temp; 440 long val; 441 442 if (kstrtol(buf, 10, &val)) 443 return -EINVAL; 444 445 mutex_lock(&data->lock); 446 447 /* We need the config register in all cases for temp <-> reg conv. */ 448 data->config5 = adt7475_read(REG_CONFIG5); 449 450 switch (sattr->nr) { 451 case OFFSET: 452 if (data->config5 & CONFIG5_TEMPOFFSET) { 453 val = SENSORS_LIMIT(val, -63000, 127000); 454 out = data->temp[OFFSET][sattr->index] = val / 1000; 455 } else { 456 val = SENSORS_LIMIT(val, -63000, 64000); 457 out = data->temp[OFFSET][sattr->index] = val / 500; 458 } 459 break; 460 461 case HYSTERSIS: 462 /* 463 * The value will be given as an absolute value, turn it 464 * into an offset based on THERM 465 */ 466 467 /* Read fresh THERM and HYSTERSIS values from the chip */ 468 data->temp[THERM][sattr->index] = 469 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2; 470 adt7475_read_hystersis(client); 471 472 temp = reg2temp(data, data->temp[THERM][sattr->index]); 473 val = SENSORS_LIMIT(val, temp - 15000, temp); 474 val = (temp - val) / 1000; 475 476 if (sattr->index != 1) { 477 data->temp[HYSTERSIS][sattr->index] &= 0xF0; 478 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4; 479 } else { 480 data->temp[HYSTERSIS][sattr->index] &= 0x0F; 481 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF); 482 } 483 484 out = data->temp[HYSTERSIS][sattr->index]; 485 break; 486 487 default: 488 data->temp[sattr->nr][sattr->index] = temp2reg(data, val); 489 490 /* 491 * We maintain an extra 2 digits of precision for simplicity 492 * - shift those back off before writing the value 493 */ 494 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2); 495 } 496 497 switch (sattr->nr) { 498 case MIN: 499 reg = TEMP_MIN_REG(sattr->index); 500 break; 501 case MAX: 502 reg = TEMP_MAX_REG(sattr->index); 503 break; 504 case OFFSET: 505 reg = TEMP_OFFSET_REG(sattr->index); 506 break; 507 case AUTOMIN: 508 reg = TEMP_TMIN_REG(sattr->index); 509 break; 510 case THERM: 511 reg = TEMP_THERM_REG(sattr->index); 512 break; 513 case HYSTERSIS: 514 if (sattr->index != 2) 515 reg = REG_REMOTE1_HYSTERSIS; 516 else 517 reg = REG_REMOTE2_HYSTERSIS; 518 519 break; 520 } 521 522 i2c_smbus_write_byte_data(client, reg, out); 523 524 mutex_unlock(&data->lock); 525 return count; 526 } 527 528 /* 529 * Table of autorange values - the user will write the value in millidegrees, 530 * and we'll convert it 531 */ 532 static const int autorange_table[] = { 533 2000, 2500, 3330, 4000, 5000, 6670, 8000, 534 10000, 13330, 16000, 20000, 26670, 32000, 40000, 535 53330, 80000 536 }; 537 538 static ssize_t show_point2(struct device *dev, struct device_attribute *attr, 539 char *buf) 540 { 541 struct adt7475_data *data = adt7475_update_device(dev); 542 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 543 int out, val; 544 545 mutex_lock(&data->lock); 546 out = (data->range[sattr->index] >> 4) & 0x0F; 547 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 548 mutex_unlock(&data->lock); 549 550 return sprintf(buf, "%d\n", val + autorange_table[out]); 551 } 552 553 static ssize_t set_point2(struct device *dev, struct device_attribute *attr, 554 const char *buf, size_t count) 555 { 556 struct i2c_client *client = to_i2c_client(dev); 557 struct adt7475_data *data = i2c_get_clientdata(client); 558 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 559 int temp; 560 long val; 561 562 if (kstrtol(buf, 10, &val)) 563 return -EINVAL; 564 565 mutex_lock(&data->lock); 566 567 /* Get a fresh copy of the needed registers */ 568 data->config5 = adt7475_read(REG_CONFIG5); 569 data->temp[AUTOMIN][sattr->index] = 570 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2; 571 data->range[sattr->index] = 572 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 573 574 /* 575 * The user will write an absolute value, so subtract the start point 576 * to figure the range 577 */ 578 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]); 579 val = SENSORS_LIMIT(val, temp + autorange_table[0], 580 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]); 581 val -= temp; 582 583 /* Find the nearest table entry to what the user wrote */ 584 val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table)); 585 586 data->range[sattr->index] &= ~0xF0; 587 data->range[sattr->index] |= val << 4; 588 589 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 590 data->range[sattr->index]); 591 592 mutex_unlock(&data->lock); 593 return count; 594 } 595 596 static ssize_t show_tach(struct device *dev, struct device_attribute *attr, 597 char *buf) 598 { 599 struct adt7475_data *data = adt7475_update_device(dev); 600 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 601 int out; 602 603 if (sattr->nr == ALARM) 604 out = (data->alarms >> (sattr->index + 10)) & 1; 605 else 606 out = tach2rpm(data->tach[sattr->nr][sattr->index]); 607 608 return sprintf(buf, "%d\n", out); 609 } 610 611 static ssize_t set_tach(struct device *dev, struct device_attribute *attr, 612 const char *buf, size_t count) 613 { 614 615 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 616 struct i2c_client *client = to_i2c_client(dev); 617 struct adt7475_data *data = i2c_get_clientdata(client); 618 unsigned long val; 619 620 if (kstrtoul(buf, 10, &val)) 621 return -EINVAL; 622 623 mutex_lock(&data->lock); 624 625 data->tach[MIN][sattr->index] = rpm2tach(val); 626 627 adt7475_write_word(client, TACH_MIN_REG(sattr->index), 628 data->tach[MIN][sattr->index]); 629 630 mutex_unlock(&data->lock); 631 return count; 632 } 633 634 static ssize_t show_pwm(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); 639 640 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]); 641 } 642 643 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr, 644 char *buf) 645 { 646 struct adt7475_data *data = adt7475_update_device(dev); 647 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 648 649 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]); 650 } 651 652 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr, 653 char *buf) 654 { 655 struct adt7475_data *data = adt7475_update_device(dev); 656 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 657 658 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]); 659 } 660 661 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 662 const char *buf, size_t count) 663 { 664 665 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 666 struct i2c_client *client = to_i2c_client(dev); 667 struct adt7475_data *data = i2c_get_clientdata(client); 668 unsigned char reg = 0; 669 long val; 670 671 if (kstrtol(buf, 10, &val)) 672 return -EINVAL; 673 674 mutex_lock(&data->lock); 675 676 switch (sattr->nr) { 677 case INPUT: 678 /* Get a fresh value for CONTROL */ 679 data->pwm[CONTROL][sattr->index] = 680 adt7475_read(PWM_CONFIG_REG(sattr->index)); 681 682 /* 683 * If we are not in manual mode, then we shouldn't allow 684 * the user to set the pwm speed 685 */ 686 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) { 687 mutex_unlock(&data->lock); 688 return count; 689 } 690 691 reg = PWM_REG(sattr->index); 692 break; 693 694 case MIN: 695 reg = PWM_MIN_REG(sattr->index); 696 break; 697 698 case MAX: 699 reg = PWM_MAX_REG(sattr->index); 700 break; 701 } 702 703 data->pwm[sattr->nr][sattr->index] = SENSORS_LIMIT(val, 0, 0xFF); 704 i2c_smbus_write_byte_data(client, reg, 705 data->pwm[sattr->nr][sattr->index]); 706 707 mutex_unlock(&data->lock); 708 709 return count; 710 } 711 712 /* Called by set_pwmctrl and set_pwmchan */ 713 714 static int hw_set_pwm(struct i2c_client *client, int index, 715 unsigned int pwmctl, unsigned int pwmchan) 716 { 717 struct adt7475_data *data = i2c_get_clientdata(client); 718 long val = 0; 719 720 switch (pwmctl) { 721 case 0: 722 val = 0x03; /* Run at full speed */ 723 break; 724 case 1: 725 val = 0x07; /* Manual mode */ 726 break; 727 case 2: 728 switch (pwmchan) { 729 case 1: 730 /* Remote1 controls PWM */ 731 val = 0x00; 732 break; 733 case 2: 734 /* local controls PWM */ 735 val = 0x01; 736 break; 737 case 4: 738 /* remote2 controls PWM */ 739 val = 0x02; 740 break; 741 case 6: 742 /* local/remote2 control PWM */ 743 val = 0x05; 744 break; 745 case 7: 746 /* All three control PWM */ 747 val = 0x06; 748 break; 749 default: 750 return -EINVAL; 751 } 752 break; 753 default: 754 return -EINVAL; 755 } 756 757 data->pwmctl[index] = pwmctl; 758 data->pwmchan[index] = pwmchan; 759 760 data->pwm[CONTROL][index] &= ~0xE0; 761 data->pwm[CONTROL][index] |= (val & 7) << 5; 762 763 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 764 data->pwm[CONTROL][index]); 765 766 return 0; 767 } 768 769 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr, 770 const char *buf, size_t count) 771 { 772 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 773 struct i2c_client *client = to_i2c_client(dev); 774 struct adt7475_data *data = i2c_get_clientdata(client); 775 int r; 776 long val; 777 778 if (kstrtol(buf, 10, &val)) 779 return -EINVAL; 780 781 mutex_lock(&data->lock); 782 /* Read Modify Write PWM values */ 783 adt7475_read_pwm(client, sattr->index); 784 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val); 785 if (r) 786 count = r; 787 mutex_unlock(&data->lock); 788 789 return count; 790 } 791 792 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr, 793 const char *buf, size_t count) 794 { 795 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 796 struct i2c_client *client = to_i2c_client(dev); 797 struct adt7475_data *data = i2c_get_clientdata(client); 798 int r; 799 long val; 800 801 if (kstrtol(buf, 10, &val)) 802 return -EINVAL; 803 804 mutex_lock(&data->lock); 805 /* Read Modify Write PWM values */ 806 adt7475_read_pwm(client, sattr->index); 807 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]); 808 if (r) 809 count = r; 810 mutex_unlock(&data->lock); 811 812 return count; 813 } 814 815 /* List of frequencies for the PWM */ 816 static const int pwmfreq_table[] = { 817 11, 14, 22, 29, 35, 44, 58, 88 818 }; 819 820 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr, 821 char *buf) 822 { 823 struct adt7475_data *data = adt7475_update_device(dev); 824 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 825 826 return sprintf(buf, "%d\n", 827 pwmfreq_table[data->range[sattr->index] & 7]); 828 } 829 830 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr, 831 const char *buf, size_t count) 832 { 833 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 834 struct i2c_client *client = to_i2c_client(dev); 835 struct adt7475_data *data = i2c_get_clientdata(client); 836 int out; 837 long val; 838 839 if (kstrtol(buf, 10, &val)) 840 return -EINVAL; 841 842 out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table)); 843 844 mutex_lock(&data->lock); 845 846 data->range[sattr->index] = 847 adt7475_read(TEMP_TRANGE_REG(sattr->index)); 848 data->range[sattr->index] &= ~7; 849 data->range[sattr->index] |= out; 850 851 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), 852 data->range[sattr->index]); 853 854 mutex_unlock(&data->lock); 855 return count; 856 } 857 858 static ssize_t show_pwm_at_crit(struct device *dev, 859 struct device_attribute *devattr, char *buf) 860 { 861 struct adt7475_data *data = adt7475_update_device(dev); 862 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY)); 863 } 864 865 static ssize_t set_pwm_at_crit(struct device *dev, 866 struct device_attribute *devattr, 867 const char *buf, size_t count) 868 { 869 struct i2c_client *client = to_i2c_client(dev); 870 struct adt7475_data *data = i2c_get_clientdata(client); 871 long val; 872 873 if (kstrtol(buf, 10, &val)) 874 return -EINVAL; 875 if (val != 0 && val != 1) 876 return -EINVAL; 877 878 mutex_lock(&data->lock); 879 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4); 880 if (val) 881 data->config4 |= CONFIG4_MAXDUTY; 882 else 883 data->config4 &= ~CONFIG4_MAXDUTY; 884 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4); 885 mutex_unlock(&data->lock); 886 887 return count; 888 } 889 890 static ssize_t show_vrm(struct device *dev, struct device_attribute *devattr, 891 char *buf) 892 { 893 struct adt7475_data *data = dev_get_drvdata(dev); 894 return sprintf(buf, "%d\n", (int)data->vrm); 895 } 896 897 static ssize_t set_vrm(struct device *dev, struct device_attribute *devattr, 898 const char *buf, size_t count) 899 { 900 struct adt7475_data *data = dev_get_drvdata(dev); 901 long val; 902 903 if (kstrtol(buf, 10, &val)) 904 return -EINVAL; 905 if (val < 0 || val > 255) 906 return -EINVAL; 907 data->vrm = val; 908 909 return count; 910 } 911 912 static ssize_t show_vid(struct device *dev, struct device_attribute *devattr, 913 char *buf) 914 { 915 struct adt7475_data *data = adt7475_update_device(dev); 916 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 917 } 918 919 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0); 920 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage, 921 set_voltage, MAX, 0); 922 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage, 923 set_voltage, MIN, 0); 924 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0); 925 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1); 926 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage, 927 set_voltage, MAX, 1); 928 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage, 929 set_voltage, MIN, 1); 930 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1); 931 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2); 932 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage, 933 set_voltage, MAX, 2); 934 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage, 935 set_voltage, MIN, 2); 936 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2); 937 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3); 938 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage, 939 set_voltage, MAX, 3); 940 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage, 941 set_voltage, MIN, 3); 942 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3); 943 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4); 944 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage, 945 set_voltage, MAX, 4); 946 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage, 947 set_voltage, MIN, 4); 948 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8); 949 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5); 950 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage, 951 set_voltage, MAX, 5); 952 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage, 953 set_voltage, MIN, 5); 954 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31); 955 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0); 956 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0); 957 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0); 958 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 959 MAX, 0); 960 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 961 MIN, 0); 962 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp, 963 set_temp, OFFSET, 0); 964 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR, 965 show_temp, set_temp, AUTOMIN, 0); 966 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR, 967 show_point2, set_point2, 0, 0); 968 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp, 969 THERM, 0); 970 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp, 971 set_temp, HYSTERSIS, 0); 972 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1); 973 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1); 974 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 975 MAX, 1); 976 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 977 MIN, 1); 978 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp, 979 set_temp, OFFSET, 1); 980 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR, 981 show_temp, set_temp, AUTOMIN, 1); 982 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR, 983 show_point2, set_point2, 0, 1); 984 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp, 985 THERM, 1); 986 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp, 987 set_temp, HYSTERSIS, 1); 988 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2); 989 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2); 990 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2); 991 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 992 MAX, 2); 993 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 994 MIN, 2); 995 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp, 996 set_temp, OFFSET, 2); 997 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR, 998 show_temp, set_temp, AUTOMIN, 2); 999 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR, 1000 show_point2, set_point2, 0, 2); 1001 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp, 1002 THERM, 2); 1003 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp, 1004 set_temp, HYSTERSIS, 2); 1005 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0); 1006 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach, 1007 MIN, 0); 1008 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0); 1009 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1); 1010 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach, 1011 MIN, 1); 1012 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1); 1013 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2); 1014 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach, 1015 MIN, 2); 1016 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2); 1017 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3); 1018 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach, 1019 MIN, 3); 1020 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3); 1021 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, 1022 0); 1023 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq, 1024 set_pwmfreq, INPUT, 0); 1025 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl, 1026 set_pwmctrl, INPUT, 0); 1027 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR, 1028 show_pwmchan, set_pwmchan, INPUT, 0); 1029 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm, 1030 set_pwm, MIN, 0); 1031 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm, 1032 set_pwm, MAX, 0); 1033 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, 1034 1); 1035 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq, 1036 set_pwmfreq, INPUT, 1); 1037 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl, 1038 set_pwmctrl, INPUT, 1); 1039 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR, 1040 show_pwmchan, set_pwmchan, INPUT, 1); 1041 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm, 1042 set_pwm, MIN, 1); 1043 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm, 1044 set_pwm, MAX, 1); 1045 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, 1046 2); 1047 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq, 1048 set_pwmfreq, INPUT, 2); 1049 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl, 1050 set_pwmctrl, INPUT, 2); 1051 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR, 1052 show_pwmchan, set_pwmchan, INPUT, 2); 1053 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm, 1054 set_pwm, MIN, 2); 1055 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm, 1056 set_pwm, MAX, 2); 1057 1058 /* Non-standard name, might need revisiting */ 1059 static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO, 1060 show_pwm_at_crit, set_pwm_at_crit); 1061 1062 static DEVICE_ATTR(vrm, S_IWUSR | S_IRUGO, show_vrm, set_vrm); 1063 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); 1064 1065 static struct attribute *adt7475_attrs[] = { 1066 &sensor_dev_attr_in1_input.dev_attr.attr, 1067 &sensor_dev_attr_in1_max.dev_attr.attr, 1068 &sensor_dev_attr_in1_min.dev_attr.attr, 1069 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1070 &sensor_dev_attr_in2_input.dev_attr.attr, 1071 &sensor_dev_attr_in2_max.dev_attr.attr, 1072 &sensor_dev_attr_in2_min.dev_attr.attr, 1073 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1074 &sensor_dev_attr_temp1_input.dev_attr.attr, 1075 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1076 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1077 &sensor_dev_attr_temp1_max.dev_attr.attr, 1078 &sensor_dev_attr_temp1_min.dev_attr.attr, 1079 &sensor_dev_attr_temp1_offset.dev_attr.attr, 1080 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, 1081 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, 1082 &sensor_dev_attr_temp1_crit.dev_attr.attr, 1083 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, 1084 &sensor_dev_attr_temp2_input.dev_attr.attr, 1085 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1086 &sensor_dev_attr_temp2_max.dev_attr.attr, 1087 &sensor_dev_attr_temp2_min.dev_attr.attr, 1088 &sensor_dev_attr_temp2_offset.dev_attr.attr, 1089 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, 1090 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, 1091 &sensor_dev_attr_temp2_crit.dev_attr.attr, 1092 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr, 1093 &sensor_dev_attr_temp3_input.dev_attr.attr, 1094 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1095 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1096 &sensor_dev_attr_temp3_max.dev_attr.attr, 1097 &sensor_dev_attr_temp3_min.dev_attr.attr, 1098 &sensor_dev_attr_temp3_offset.dev_attr.attr, 1099 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr, 1100 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr, 1101 &sensor_dev_attr_temp3_crit.dev_attr.attr, 1102 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr, 1103 &sensor_dev_attr_fan1_input.dev_attr.attr, 1104 &sensor_dev_attr_fan1_min.dev_attr.attr, 1105 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1106 &sensor_dev_attr_fan2_input.dev_attr.attr, 1107 &sensor_dev_attr_fan2_min.dev_attr.attr, 1108 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1109 &sensor_dev_attr_fan3_input.dev_attr.attr, 1110 &sensor_dev_attr_fan3_min.dev_attr.attr, 1111 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1112 &sensor_dev_attr_pwm1.dev_attr.attr, 1113 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 1114 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1115 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1116 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1117 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1118 &sensor_dev_attr_pwm3.dev_attr.attr, 1119 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1120 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1121 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1122 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1123 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1124 &dev_attr_pwm_use_point2_pwm_at_crit.attr, 1125 NULL, 1126 }; 1127 1128 static struct attribute *fan4_attrs[] = { 1129 &sensor_dev_attr_fan4_input.dev_attr.attr, 1130 &sensor_dev_attr_fan4_min.dev_attr.attr, 1131 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1132 NULL 1133 }; 1134 1135 static struct attribute *pwm2_attrs[] = { 1136 &sensor_dev_attr_pwm2.dev_attr.attr, 1137 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1138 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1139 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1140 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1141 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1142 NULL 1143 }; 1144 1145 static struct attribute *in0_attrs[] = { 1146 &sensor_dev_attr_in0_input.dev_attr.attr, 1147 &sensor_dev_attr_in0_max.dev_attr.attr, 1148 &sensor_dev_attr_in0_min.dev_attr.attr, 1149 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1150 NULL 1151 }; 1152 1153 static struct attribute *in3_attrs[] = { 1154 &sensor_dev_attr_in3_input.dev_attr.attr, 1155 &sensor_dev_attr_in3_max.dev_attr.attr, 1156 &sensor_dev_attr_in3_min.dev_attr.attr, 1157 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1158 NULL 1159 }; 1160 1161 static struct attribute *in4_attrs[] = { 1162 &sensor_dev_attr_in4_input.dev_attr.attr, 1163 &sensor_dev_attr_in4_max.dev_attr.attr, 1164 &sensor_dev_attr_in4_min.dev_attr.attr, 1165 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1166 NULL 1167 }; 1168 1169 static struct attribute *in5_attrs[] = { 1170 &sensor_dev_attr_in5_input.dev_attr.attr, 1171 &sensor_dev_attr_in5_max.dev_attr.attr, 1172 &sensor_dev_attr_in5_min.dev_attr.attr, 1173 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1174 NULL 1175 }; 1176 1177 static struct attribute *vid_attrs[] = { 1178 &dev_attr_cpu0_vid.attr, 1179 &dev_attr_vrm.attr, 1180 NULL 1181 }; 1182 1183 static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs }; 1184 static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs }; 1185 static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs }; 1186 static struct attribute_group in0_attr_group = { .attrs = in0_attrs }; 1187 static struct attribute_group in3_attr_group = { .attrs = in3_attrs }; 1188 static struct attribute_group in4_attr_group = { .attrs = in4_attrs }; 1189 static struct attribute_group in5_attr_group = { .attrs = in5_attrs }; 1190 static struct attribute_group vid_attr_group = { .attrs = vid_attrs }; 1191 1192 static int adt7475_detect(struct i2c_client *client, 1193 struct i2c_board_info *info) 1194 { 1195 struct i2c_adapter *adapter = client->adapter; 1196 int vendid, devid, devid2; 1197 const char *name; 1198 1199 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1200 return -ENODEV; 1201 1202 vendid = adt7475_read(REG_VENDID); 1203 devid2 = adt7475_read(REG_DEVID2); 1204 if (vendid != 0x41 || /* Analog Devices */ 1205 (devid2 & 0xf8) != 0x68) 1206 return -ENODEV; 1207 1208 devid = adt7475_read(REG_DEVID); 1209 if (devid == 0x73) 1210 name = "adt7473"; 1211 else if (devid == 0x75 && client->addr == 0x2e) 1212 name = "adt7475"; 1213 else if (devid == 0x76) 1214 name = "adt7476"; 1215 else if ((devid2 & 0xfc) == 0x6c) 1216 name = "adt7490"; 1217 else { 1218 dev_dbg(&adapter->dev, 1219 "Couldn't detect an ADT7473/75/76/90 part at " 1220 "0x%02x\n", (unsigned int)client->addr); 1221 return -ENODEV; 1222 } 1223 1224 strlcpy(info->type, name, I2C_NAME_SIZE); 1225 1226 return 0; 1227 } 1228 1229 static void adt7475_remove_files(struct i2c_client *client, 1230 struct adt7475_data *data) 1231 { 1232 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group); 1233 if (data->has_fan4) 1234 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group); 1235 if (data->has_pwm2) 1236 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group); 1237 if (data->has_voltage & (1 << 0)) 1238 sysfs_remove_group(&client->dev.kobj, &in0_attr_group); 1239 if (data->has_voltage & (1 << 3)) 1240 sysfs_remove_group(&client->dev.kobj, &in3_attr_group); 1241 if (data->has_voltage & (1 << 4)) 1242 sysfs_remove_group(&client->dev.kobj, &in4_attr_group); 1243 if (data->has_voltage & (1 << 5)) 1244 sysfs_remove_group(&client->dev.kobj, &in5_attr_group); 1245 if (data->has_vid) 1246 sysfs_remove_group(&client->dev.kobj, &vid_attr_group); 1247 } 1248 1249 static int adt7475_probe(struct i2c_client *client, 1250 const struct i2c_device_id *id) 1251 { 1252 static const char * const names[] = { 1253 [adt7473] = "ADT7473", 1254 [adt7475] = "ADT7475", 1255 [adt7476] = "ADT7476", 1256 [adt7490] = "ADT7490", 1257 }; 1258 1259 struct adt7475_data *data; 1260 int i, ret = 0, revision; 1261 u8 config2, config3; 1262 1263 data = kzalloc(sizeof(*data), GFP_KERNEL); 1264 if (data == NULL) 1265 return -ENOMEM; 1266 1267 mutex_init(&data->lock); 1268 i2c_set_clientdata(client, data); 1269 1270 /* Initialize device-specific values */ 1271 switch (id->driver_data) { 1272 case adt7476: 1273 data->has_voltage = 0x0e; /* in1 to in3 */ 1274 revision = adt7475_read(REG_DEVID2) & 0x07; 1275 break; 1276 case adt7490: 1277 data->has_voltage = 0x3e; /* in1 to in5 */ 1278 revision = adt7475_read(REG_DEVID2) & 0x03; 1279 if (revision == 0x03) 1280 revision += adt7475_read(REG_DEVREV2); 1281 break; 1282 default: 1283 data->has_voltage = 0x06; /* in1, in2 */ 1284 revision = adt7475_read(REG_DEVID2) & 0x07; 1285 } 1286 1287 config3 = adt7475_read(REG_CONFIG3); 1288 /* Pin PWM2 may alternatively be used for ALERT output */ 1289 if (!(config3 & CONFIG3_SMBALERT)) 1290 data->has_pwm2 = 1; 1291 /* Meaning of this bit is inverted for the ADT7473-1 */ 1292 if (id->driver_data == adt7473 && revision >= 1) 1293 data->has_pwm2 = !data->has_pwm2; 1294 1295 data->config4 = adt7475_read(REG_CONFIG4); 1296 /* Pin TACH4 may alternatively be used for THERM */ 1297 if ((data->config4 & CONFIG4_PINFUNC) == 0x0) 1298 data->has_fan4 = 1; 1299 1300 /* 1301 * THERM configuration is more complex on the ADT7476 and ADT7490, 1302 * because 2 different pins (TACH4 and +2.5 Vin) can be used for 1303 * this function 1304 */ 1305 if (id->driver_data == adt7490) { 1306 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 && 1307 !(config3 & CONFIG3_THERM)) 1308 data->has_fan4 = 1; 1309 } 1310 if (id->driver_data == adt7476 || id->driver_data == adt7490) { 1311 if (!(config3 & CONFIG3_THERM) || 1312 (data->config4 & CONFIG4_PINFUNC) == 0x1) 1313 data->has_voltage |= (1 << 0); /* in0 */ 1314 } 1315 1316 /* 1317 * On the ADT7476, the +12V input pin may instead be used as VID5, 1318 * and VID pins may alternatively be used as GPIO 1319 */ 1320 if (id->driver_data == adt7476) { 1321 u8 vid = adt7475_read(REG_VID); 1322 if (!(vid & VID_VIDSEL)) 1323 data->has_voltage |= (1 << 4); /* in4 */ 1324 1325 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO); 1326 } 1327 1328 /* Voltage attenuators can be bypassed, globally or individually */ 1329 config2 = adt7475_read(REG_CONFIG2); 1330 if (config2 & CONFIG2_ATTN) { 1331 data->bypass_attn = (0x3 << 3) | 0x3; 1332 } else { 1333 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) | 1334 ((data->config4 & CONFIG4_ATTN_IN43) >> 3); 1335 } 1336 data->bypass_attn &= data->has_voltage; 1337 1338 /* 1339 * Call adt7475_read_pwm for all pwm's as this will reprogram any 1340 * pwm's which are disabled to manual mode with 0% duty cycle 1341 */ 1342 for (i = 0; i < ADT7475_PWM_COUNT; i++) 1343 adt7475_read_pwm(client, i); 1344 1345 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group); 1346 if (ret) 1347 goto efree; 1348 1349 /* Features that can be disabled individually */ 1350 if (data->has_fan4) { 1351 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group); 1352 if (ret) 1353 goto eremove; 1354 } 1355 if (data->has_pwm2) { 1356 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group); 1357 if (ret) 1358 goto eremove; 1359 } 1360 if (data->has_voltage & (1 << 0)) { 1361 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group); 1362 if (ret) 1363 goto eremove; 1364 } 1365 if (data->has_voltage & (1 << 3)) { 1366 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group); 1367 if (ret) 1368 goto eremove; 1369 } 1370 if (data->has_voltage & (1 << 4)) { 1371 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group); 1372 if (ret) 1373 goto eremove; 1374 } 1375 if (data->has_voltage & (1 << 5)) { 1376 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group); 1377 if (ret) 1378 goto eremove; 1379 } 1380 if (data->has_vid) { 1381 data->vrm = vid_which_vrm(); 1382 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group); 1383 if (ret) 1384 goto eremove; 1385 } 1386 1387 data->hwmon_dev = hwmon_device_register(&client->dev); 1388 if (IS_ERR(data->hwmon_dev)) { 1389 ret = PTR_ERR(data->hwmon_dev); 1390 goto eremove; 1391 } 1392 1393 dev_info(&client->dev, "%s device, revision %d\n", 1394 names[id->driver_data], revision); 1395 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2) 1396 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n", 1397 (data->has_voltage & (1 << 0)) ? " in0" : "", 1398 (data->has_voltage & (1 << 4)) ? " in4" : "", 1399 data->has_fan4 ? " fan4" : "", 1400 data->has_pwm2 ? " pwm2" : "", 1401 data->has_vid ? " vid" : ""); 1402 if (data->bypass_attn) 1403 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n", 1404 (data->bypass_attn & (1 << 0)) ? " in0" : "", 1405 (data->bypass_attn & (1 << 1)) ? " in1" : "", 1406 (data->bypass_attn & (1 << 3)) ? " in3" : "", 1407 (data->bypass_attn & (1 << 4)) ? " in4" : ""); 1408 1409 return 0; 1410 1411 eremove: 1412 adt7475_remove_files(client, data); 1413 efree: 1414 kfree(data); 1415 return ret; 1416 } 1417 1418 static int adt7475_remove(struct i2c_client *client) 1419 { 1420 struct adt7475_data *data = i2c_get_clientdata(client); 1421 1422 hwmon_device_unregister(data->hwmon_dev); 1423 adt7475_remove_files(client, data); 1424 kfree(data); 1425 1426 return 0; 1427 } 1428 1429 static struct i2c_driver adt7475_driver = { 1430 .class = I2C_CLASS_HWMON, 1431 .driver = { 1432 .name = "adt7475", 1433 }, 1434 .probe = adt7475_probe, 1435 .remove = adt7475_remove, 1436 .id_table = adt7475_id, 1437 .detect = adt7475_detect, 1438 .address_list = normal_i2c, 1439 }; 1440 1441 static void adt7475_read_hystersis(struct i2c_client *client) 1442 { 1443 struct adt7475_data *data = i2c_get_clientdata(client); 1444 1445 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS); 1446 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0]; 1447 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS); 1448 } 1449 1450 static void adt7475_read_pwm(struct i2c_client *client, int index) 1451 { 1452 struct adt7475_data *data = i2c_get_clientdata(client); 1453 unsigned int v; 1454 1455 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index)); 1456 1457 /* 1458 * Figure out the internal value for pwmctrl and pwmchan 1459 * based on the current settings 1460 */ 1461 v = (data->pwm[CONTROL][index] >> 5) & 7; 1462 1463 if (v == 3) 1464 data->pwmctl[index] = 0; 1465 else if (v == 7) 1466 data->pwmctl[index] = 1; 1467 else if (v == 4) { 1468 /* 1469 * The fan is disabled - we don't want to 1470 * support that, so change to manual mode and 1471 * set the duty cycle to 0 instead 1472 */ 1473 data->pwm[INPUT][index] = 0; 1474 data->pwm[CONTROL][index] &= ~0xE0; 1475 data->pwm[CONTROL][index] |= (7 << 5); 1476 1477 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 1478 data->pwm[INPUT][index]); 1479 1480 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), 1481 data->pwm[CONTROL][index]); 1482 1483 data->pwmctl[index] = 1; 1484 } else { 1485 data->pwmctl[index] = 2; 1486 1487 switch (v) { 1488 case 0: 1489 data->pwmchan[index] = 1; 1490 break; 1491 case 1: 1492 data->pwmchan[index] = 2; 1493 break; 1494 case 2: 1495 data->pwmchan[index] = 4; 1496 break; 1497 case 5: 1498 data->pwmchan[index] = 6; 1499 break; 1500 case 6: 1501 data->pwmchan[index] = 7; 1502 break; 1503 } 1504 } 1505 } 1506 1507 static struct adt7475_data *adt7475_update_device(struct device *dev) 1508 { 1509 struct i2c_client *client = to_i2c_client(dev); 1510 struct adt7475_data *data = i2c_get_clientdata(client); 1511 u16 ext; 1512 int i; 1513 1514 mutex_lock(&data->lock); 1515 1516 /* Measurement values update every 2 seconds */ 1517 if (time_after(jiffies, data->measure_updated + HZ * 2) || 1518 !data->valid) { 1519 data->alarms = adt7475_read(REG_STATUS2) << 8; 1520 data->alarms |= adt7475_read(REG_STATUS1); 1521 1522 ext = (adt7475_read(REG_EXTEND2) << 8) | 1523 adt7475_read(REG_EXTEND1); 1524 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1525 if (!(data->has_voltage & (1 << i))) 1526 continue; 1527 data->voltage[INPUT][i] = 1528 (adt7475_read(VOLTAGE_REG(i)) << 2) | 1529 ((ext >> (i * 2)) & 3); 1530 } 1531 1532 for (i = 0; i < ADT7475_TEMP_COUNT; i++) 1533 data->temp[INPUT][i] = 1534 (adt7475_read(TEMP_REG(i)) << 2) | 1535 ((ext >> ((i + 5) * 2)) & 3); 1536 1537 if (data->has_voltage & (1 << 5)) { 1538 data->alarms |= adt7475_read(REG_STATUS4) << 24; 1539 ext = adt7475_read(REG_EXTEND3); 1540 data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 | 1541 ((ext >> 4) & 3); 1542 } 1543 1544 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 1545 if (i == 3 && !data->has_fan4) 1546 continue; 1547 data->tach[INPUT][i] = 1548 adt7475_read_word(client, TACH_REG(i)); 1549 } 1550 1551 /* Updated by hw when in auto mode */ 1552 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1553 if (i == 1 && !data->has_pwm2) 1554 continue; 1555 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i)); 1556 } 1557 1558 if (data->has_vid) 1559 data->vid = adt7475_read(REG_VID) & 0x3f; 1560 1561 data->measure_updated = jiffies; 1562 } 1563 1564 /* Limits and settings, should never change update every 60 seconds */ 1565 if (time_after(jiffies, data->limits_updated + HZ * 60) || 1566 !data->valid) { 1567 data->config4 = adt7475_read(REG_CONFIG4); 1568 data->config5 = adt7475_read(REG_CONFIG5); 1569 1570 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { 1571 if (!(data->has_voltage & (1 << i))) 1572 continue; 1573 /* Adjust values so they match the input precision */ 1574 data->voltage[MIN][i] = 1575 adt7475_read(VOLTAGE_MIN_REG(i)) << 2; 1576 data->voltage[MAX][i] = 1577 adt7475_read(VOLTAGE_MAX_REG(i)) << 2; 1578 } 1579 1580 if (data->has_voltage & (1 << 5)) { 1581 data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2; 1582 data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2; 1583 } 1584 1585 for (i = 0; i < ADT7475_TEMP_COUNT; i++) { 1586 /* Adjust values so they match the input precision */ 1587 data->temp[MIN][i] = 1588 adt7475_read(TEMP_MIN_REG(i)) << 2; 1589 data->temp[MAX][i] = 1590 adt7475_read(TEMP_MAX_REG(i)) << 2; 1591 data->temp[AUTOMIN][i] = 1592 adt7475_read(TEMP_TMIN_REG(i)) << 2; 1593 data->temp[THERM][i] = 1594 adt7475_read(TEMP_THERM_REG(i)) << 2; 1595 data->temp[OFFSET][i] = 1596 adt7475_read(TEMP_OFFSET_REG(i)); 1597 } 1598 adt7475_read_hystersis(client); 1599 1600 for (i = 0; i < ADT7475_TACH_COUNT; i++) { 1601 if (i == 3 && !data->has_fan4) 1602 continue; 1603 data->tach[MIN][i] = 1604 adt7475_read_word(client, TACH_MIN_REG(i)); 1605 } 1606 1607 for (i = 0; i < ADT7475_PWM_COUNT; i++) { 1608 if (i == 1 && !data->has_pwm2) 1609 continue; 1610 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i)); 1611 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i)); 1612 /* Set the channel and control information */ 1613 adt7475_read_pwm(client, i); 1614 } 1615 1616 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0)); 1617 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1)); 1618 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2)); 1619 1620 data->limits_updated = jiffies; 1621 data->valid = 1; 1622 } 1623 1624 mutex_unlock(&data->lock); 1625 1626 return data; 1627 } 1628 1629 module_i2c_driver(adt7475_driver); 1630 1631 MODULE_AUTHOR("Advanced Micro Devices, Inc"); 1632 MODULE_DESCRIPTION("adt7475 driver"); 1633 MODULE_LICENSE("GPL"); 1634