drivers/hwmon/adt7475.c

   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         unsigned long limits_updated;
 198         char valid;
 199
 200         u8 config4;
 201         u8 config5;
 202         u8 has_voltage;
 203         u8 bypass_attn;         /* Bypass voltage attenuator */
 204         u8 has_pwm2:1;
 205         u8 has_fan4:1;
 206         u8 has_vid:1;
 207         u32 alarms;
 208         u16 voltage[3][6];
 209         u16 temp[7][3];
 210         u16 tach[2][4];
 211         u8 pwm[4][3];
 212         u8 range[3];
 213         u8 pwmctl[3];
 214         u8 pwmchan[3];
 215         u8 enh_acoustics[2];
 216
 217         u8 vid;
 218         u8 vrm;
 219 };
 220
 221 static struct i2c_driver adt7475_driver;
 222 static struct adt7475_data *adt7475_update_device(struct device *dev);
 223 static void adt7475_read_hystersis(struct i2c_client *client);
 224 static void adt7475_read_pwm(struct i2c_client *client, int index);
 225
 226 /* Given a temp value, convert it to register value */
 227
 228 static inline u16 temp2reg(struct adt7475_data *data, long val)
 229 {
 230         u16 ret;
 231
 232         if (!(data->config5 & CONFIG5_TWOSCOMP)) {
 233                 val = clamp_val(val, -64000, 191000);
 234                 ret = (val + 64500) / 1000;
 235         } else {
 236                 val = clamp_val(val, -128000, 127000);
 237                 if (val < -500)
 238                         ret = (256500 + val) / 1000;
 239                 else
 240                         ret = (val + 500) / 1000;
 241         }
 242
 243         return ret << 2;
 244 }
 245
 246 /* Given a register value, convert it to a real temp value */
 247
 248 static inline int reg2temp(struct adt7475_data *data, u16 reg)
 249 {
 250         if (data->config5 & CONFIG5_TWOSCOMP) {
 251                 if (reg >= 512)
 252                         return (reg - 1024) * 250;
 253                 else
 254                         return reg * 250;
 255         } else
 256                 return (reg - 256) * 250;
 257 }
 258
 259 static inline int tach2rpm(u16 tach)
 260 {
 261         if (tach == 0 || tach == 0xFFFF)
 262                 return 0;
 263
 264         return (90000 * 60) / tach;
 265 }
 266
 267 static inline u16 rpm2tach(unsigned long rpm)
 268 {
 269         if (rpm == 0)
 270                 return 0;
 271
 272         return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
 273 }
 274
 275 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
 276 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
 277         { 45, 94 },     /* +2.5V */
 278         { 175, 525 },   /* Vccp */
 279         { 68, 71 },     /* Vcc */
 280         { 93, 47 },     /* +5V */
 281         { 120, 20 },    /* +12V */
 282         { 45, 45 },     /* Vtt */
 283 };
 284
 285 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
 286 {
 287         const int *r = adt7473_in_scaling[channel];
 288
 289         if (bypass_attn & (1 << channel))
 290                 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
 291         return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
 292 }
 293
 294 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
 295 {
 296         const int *r = adt7473_in_scaling[channel];
 297         long reg;
 298
 299         if (bypass_attn & (1 << channel))
 300                 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
 301         else
 302                 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
 303                                         (r[0] + r[1]) * 2250);
 304         return clamp_val(reg, 0, 1023) & (0xff << 2);
 305 }
 306
 307 static int adt7475_read_word(struct i2c_client *client, int reg)
 308 {
 309         int val1, val2;
 310
 311         val1 = i2c_smbus_read_byte_data(client, reg);
 312         if (val1 < 0)
 313                 return val1;
 314         val2 = i2c_smbus_read_byte_data(client, reg + 1);
 315         if (val2 < 0)
 316                 return val2;
 317
 318         return val1 | (val2 << 8);
 319 }
 320
 321 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
 322 {
 323         i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
 324         i2c_smbus_write_byte_data(client, reg, val & 0xFF);
 325 }
 326
 327 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
 328                             char *buf)
 329 {
 330         struct adt7475_data *data = adt7475_update_device(dev);
 331         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 332         unsigned short val;
 333
 334         switch (sattr->nr) {
 335         case ALARM:
 336                 return sprintf(buf, "%d\n",
 337                                (data->alarms >> sattr->index) & 1);
 338         default:
 339                 val = data->voltage[sattr->nr][sattr->index];
 340                 return sprintf(buf, "%d\n",
 341                                reg2volt(sattr->index, val, data->bypass_attn));
 342         }
 343 }
 344
 345 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
 346                            const char *buf, size_t count)
 347 {
 348
 349         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 350         struct i2c_client *client = to_i2c_client(dev);
 351         struct adt7475_data *data = i2c_get_clientdata(client);
 352         unsigned char reg;
 353         long val;
 354
 355         if (kstrtol(buf, 10, &val))
 356                 return -EINVAL;
 357
 358         mutex_lock(&data->lock);
 359
 360         data->voltage[sattr->nr][sattr->index] =
 361                                 volt2reg(sattr->index, val, data->bypass_attn);
 362
 363         if (sattr->index < ADT7475_VOLTAGE_COUNT) {
 364                 if (sattr->nr == MIN)
 365                         reg = VOLTAGE_MIN_REG(sattr->index);
 366                 else
 367                         reg = VOLTAGE_MAX_REG(sattr->index);
 368         } else {
 369                 if (sattr->nr == MIN)
 370                         reg = REG_VTT_MIN;
 371                 else
 372                         reg = REG_VTT_MAX;
 373         }
 374
 375         i2c_smbus_write_byte_data(client, reg,
 376                                   data->voltage[sattr->nr][sattr->index] >> 2);
 377         mutex_unlock(&data->lock);
 378
 379         return count;
 380 }
 381
 382 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 383                          char *buf)
 384 {
 385         struct adt7475_data *data = adt7475_update_device(dev);
 386         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 387         int out;
 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         mutex_lock(&data->lock);
 634         out = (data->range[sattr->index] >> 4) & 0x0F;
 635         val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
 636         mutex_unlock(&data->lock);
 637
 638         return sprintf(buf, "%d\n", val + autorange_table[out]);
 639 }
 640
 641 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
 642                           const char *buf, size_t count)
 643 {
 644         struct i2c_client *client = to_i2c_client(dev);
 645         struct adt7475_data *data = i2c_get_clientdata(client);
 646         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 647         int temp;
 648         long val;
 649
 650         if (kstrtol(buf, 10, &val))
 651                 return -EINVAL;
 652
 653         mutex_lock(&data->lock);
 654
 655         /* Get a fresh copy of the needed registers */
 656         data->config5 = adt7475_read(REG_CONFIG5);
 657         data->temp[AUTOMIN][sattr->index] =
 658                 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
 659         data->range[sattr->index] =
 660                 adt7475_read(TEMP_TRANGE_REG(sattr->index));
 661
 662         /*
 663          * The user will write an absolute value, so subtract the start point
 664          * to figure the range
 665          */
 666         temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
 667         val = clamp_val(val, temp + autorange_table[0],
 668                 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
 669         val -= temp;
 670
 671         /* Find the nearest table entry to what the user wrote */
 672         val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
 673
 674         data->range[sattr->index] &= ~0xF0;
 675         data->range[sattr->index] |= val << 4;
 676
 677         i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
 678                                   data->range[sattr->index]);
 679
 680         mutex_unlock(&data->lock);
 681         return count;
 682 }
 683
 684 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
 685                          char *buf)
 686 {
 687         struct adt7475_data *data = adt7475_update_device(dev);
 688         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 689         int out;
 690
 691         if (sattr->nr == ALARM)
 692                 out = (data->alarms >> (sattr->index + 10)) & 1;
 693         else
 694                 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
 695
 696         return sprintf(buf, "%d\n", out);
 697 }
 698
 699 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
 700                         const char *buf, size_t count)
 701 {
 702
 703         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 704         struct i2c_client *client = to_i2c_client(dev);
 705         struct adt7475_data *data = i2c_get_clientdata(client);
 706         unsigned long val;
 707
 708         if (kstrtoul(buf, 10, &val))
 709                 return -EINVAL;
 710
 711         mutex_lock(&data->lock);
 712
 713         data->tach[MIN][sattr->index] = rpm2tach(val);
 714
 715         adt7475_write_word(client, TACH_MIN_REG(sattr->index),
 716                            data->tach[MIN][sattr->index]);
 717
 718         mutex_unlock(&data->lock);
 719         return count;
 720 }
 721
 722 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 723                         char *buf)
 724 {
 725         struct adt7475_data *data = adt7475_update_device(dev);
 726         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 727
 728         return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
 729 }
 730
 731 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
 732                             char *buf)
 733 {
 734         struct adt7475_data *data = adt7475_update_device(dev);
 735         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 736
 737         return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
 738 }
 739
 740 static ssize_t show_pwmctrl(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         return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
 747 }
 748
 749 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 750                        const char *buf, size_t count)
 751 {
 752
 753         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 754         struct i2c_client *client = to_i2c_client(dev);
 755         struct adt7475_data *data = i2c_get_clientdata(client);
 756         unsigned char reg = 0;
 757         long val;
 758
 759         if (kstrtol(buf, 10, &val))
 760                 return -EINVAL;
 761
 762         mutex_lock(&data->lock);
 763
 764         switch (sattr->nr) {
 765         case INPUT:
 766                 /* Get a fresh value for CONTROL */
 767                 data->pwm[CONTROL][sattr->index] =
 768                         adt7475_read(PWM_CONFIG_REG(sattr->index));
 769
 770                 /*
 771                  * If we are not in manual mode, then we shouldn't allow
 772                  * the user to set the pwm speed
 773                  */
 774                 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
 775                         mutex_unlock(&data->lock);
 776                         return count;
 777                 }
 778
 779                 reg = PWM_REG(sattr->index);
 780                 break;
 781
 782         case MIN:
 783                 reg = PWM_MIN_REG(sattr->index);
 784                 break;
 785
 786         case MAX:
 787                 reg = PWM_MAX_REG(sattr->index);
 788                 break;
 789         }
 790
 791         data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
 792         i2c_smbus_write_byte_data(client, reg,
 793                                   data->pwm[sattr->nr][sattr->index]);
 794         mutex_unlock(&data->lock);
 795
 796         return count;
 797 }
 798
 799 static ssize_t show_stall_disable(struct device *dev,
 800                                   struct device_attribute *attr, char *buf)
 801 {
 802         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 803         struct i2c_client *client = to_i2c_client(dev);
 804         struct adt7475_data *data = i2c_get_clientdata(client);
 805         u8 mask = BIT(5 + sattr->index);
 806
 807         return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
 808 }
 809
 810 static ssize_t set_stall_disable(struct device *dev,
 811                                  struct device_attribute *attr, const char *buf,
 812                                  size_t count)
 813 {
 814         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 815         struct i2c_client *client = to_i2c_client(dev);
 816         struct adt7475_data *data = i2c_get_clientdata(client);
 817         long val;
 818         u8 mask = BIT(5 + sattr->index);
 819
 820         if (kstrtol(buf, 10, &val))
 821                 return -EINVAL;
 822
 823         mutex_lock(&data->lock);
 824
 825         data->enh_acoustics[0] &= ~mask;
 826         if (val)
 827                 data->enh_acoustics[0] |= mask;
 828
 829         i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
 830                                   data->enh_acoustics[0]);
 831
 832         mutex_unlock(&data->lock);
 833
 834         return count;
 835 }
 836
 837 /* Called by set_pwmctrl and set_pwmchan */
 838
 839 static int hw_set_pwm(struct i2c_client *client, int index,
 840                       unsigned int pwmctl, unsigned int pwmchan)
 841 {
 842         struct adt7475_data *data = i2c_get_clientdata(client);
 843         long val = 0;
 844
 845         switch (pwmctl) {
 846         case 0:
 847                 val = 0x03;     /* Run at full speed */
 848                 break;
 849         case 1:
 850                 val = 0x07;     /* Manual mode */
 851                 break;
 852         case 2:
 853                 switch (pwmchan) {
 854                 case 1:
 855                         /* Remote1 controls PWM */
 856                         val = 0x00;
 857                         break;
 858                 case 2:
 859                         /* local controls PWM */
 860                         val = 0x01;
 861                         break;
 862                 case 4:
 863                         /* remote2 controls PWM */
 864                         val = 0x02;
 865                         break;
 866                 case 6:
 867                         /* local/remote2 control PWM */
 868                         val = 0x05;
 869                         break;
 870                 case 7:
 871                         /* All three control PWM */
 872                         val = 0x06;
 873                         break;
 874                 default:
 875                         return -EINVAL;
 876                 }
 877                 break;
 878         default:
 879                 return -EINVAL;
 880         }
 881
 882         data->pwmctl[index] = pwmctl;
 883         data->pwmchan[index] = pwmchan;
 884
 885         data->pwm[CONTROL][index] &= ~0xE0;
 886         data->pwm[CONTROL][index] |= (val & 7) << 5;
 887
 888         i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
 889                                   data->pwm[CONTROL][index]);
 890
 891         return 0;
 892 }
 893
 894 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
 895                            const char *buf, size_t count)
 896 {
 897         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 898         struct i2c_client *client = to_i2c_client(dev);
 899         struct adt7475_data *data = i2c_get_clientdata(client);
 900         int r;
 901         long val;
 902
 903         if (kstrtol(buf, 10, &val))
 904                 return -EINVAL;
 905
 906         mutex_lock(&data->lock);
 907         /* Read Modify Write PWM values */
 908         adt7475_read_pwm(client, sattr->index);
 909         r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
 910         if (r)
 911                 count = r;
 912         mutex_unlock(&data->lock);
 913
 914         return count;
 915 }
 916
 917 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
 918                            const char *buf, size_t count)
 919 {
 920         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 921         struct i2c_client *client = to_i2c_client(dev);
 922         struct adt7475_data *data = i2c_get_clientdata(client);
 923         int r;
 924         long val;
 925
 926         if (kstrtol(buf, 10, &val))
 927                 return -EINVAL;
 928
 929         mutex_lock(&data->lock);
 930         /* Read Modify Write PWM values */
 931         adt7475_read_pwm(client, sattr->index);
 932         r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
 933         if (r)
 934                 count = r;
 935         mutex_unlock(&data->lock);
 936
 937         return count;
 938 }
 939
 940 /* List of frequencies for the PWM */
 941 static const int pwmfreq_table[] = {
 942         11, 14, 22, 29, 35, 44, 58, 88, 22500
 943 };
 944
 945 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
 946                             char *buf)
 947 {
 948         struct adt7475_data *data = adt7475_update_device(dev);
 949         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 950         int i = clamp_val(data->range[sattr->index] & 0xf, 0,
 951                           ARRAY_SIZE(pwmfreq_table) - 1);
 952
 953         return sprintf(buf, "%d\n", pwmfreq_table[i]);
 954 }
 955
 956 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
 957                            const char *buf, size_t count)
 958 {
 959         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 960         struct i2c_client *client = to_i2c_client(dev);
 961         struct adt7475_data *data = i2c_get_clientdata(client);
 962         int out;
 963         long val;
 964
 965         if (kstrtol(buf, 10, &val))
 966                 return -EINVAL;
 967
 968         out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
 969
 970         mutex_lock(&data->lock);
 971
 972         data->range[sattr->index] =
 973                 adt7475_read(TEMP_TRANGE_REG(sattr->index));
 974         data->range[sattr->index] &= ~0xf;
 975         data->range[sattr->index] |= out;
 976
 977         i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
 978                                   data->range[sattr->index]);
 979
 980         mutex_unlock(&data->lock);
 981         return count;
 982 }
 983
 984 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
 985                                         struct device_attribute *devattr,
 986                                         char *buf)
 987 {
 988         struct adt7475_data *data = adt7475_update_device(dev);
 989         return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
 990 }
 991
 992 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
 993                                         struct device_attribute *devattr,
 994                                         const char *buf, size_t count)
 995 {
 996         struct i2c_client *client = to_i2c_client(dev);
 997         struct adt7475_data *data = i2c_get_clientdata(client);
 998         long val;
 999
1000         if (kstrtol(buf, 10, &val))
1001                 return -EINVAL;
1002         if (val != 0 && val != 1)
1003                 return -EINVAL;
1004
1005         mutex_lock(&data->lock);
1006         data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1007         if (val)
1008                 data->config4 |= CONFIG4_MAXDUTY;
1009         else
1010                 data->config4 &= ~CONFIG4_MAXDUTY;
1011         i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1012         mutex_unlock(&data->lock);
1013
1014         return count;
1015 }
1016
1017 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1018                         char *buf)
1019 {
1020         struct adt7475_data *data = dev_get_drvdata(dev);
1021         return sprintf(buf, "%d\n", (int)data->vrm);
1022 }
1023
1024 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1025                          const char *buf, size_t count)
1026 {
1027         struct adt7475_data *data = dev_get_drvdata(dev);
1028         long val;
1029
1030         if (kstrtol(buf, 10, &val))
1031                 return -EINVAL;
1032         if (val < 0 || val > 255)
1033                 return -EINVAL;
1034         data->vrm = val;
1035
1036         return count;
1037 }
1038
1039 static ssize_t cpu0_vid_show(struct device *dev,
1040                              struct device_attribute *devattr, char *buf)
1041 {
1042         struct adt7475_data *data = adt7475_update_device(dev);
1043         return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1044 }
1045
1046 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
1047 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
1048                             set_voltage, MAX, 0);
1049 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
1050                             set_voltage, MIN, 0);
1051 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
1052 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
1053 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
1054                             set_voltage, MAX, 1);
1055 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
1056                             set_voltage, MIN, 1);
1057 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
1058 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
1059 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
1060                             set_voltage, MAX, 2);
1061 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
1062                             set_voltage, MIN, 2);
1063 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
1064 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
1065 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
1066                             set_voltage, MAX, 3);
1067 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
1068                             set_voltage, MIN, 3);
1069 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
1070 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
1071 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
1072                             set_voltage, MAX, 4);
1073 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
1074                             set_voltage, MIN, 4);
1075 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
1076 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
1077 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
1078                             set_voltage, MAX, 5);
1079 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
1080                             set_voltage, MIN, 5);
1081 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
1082 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
1083 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
1084 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
1085 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1086                             MAX, 0);
1087 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1088                             MIN, 0);
1089 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
1090                             set_temp, OFFSET, 0);
1091 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
1092                             show_temp, set_temp, AUTOMIN, 0);
1093 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
1094                             show_point2, set_point2, 0, 0);
1095 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1096                             THERM, 0);
1097 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1098                             set_temp, HYSTERSIS, 0);
1099 static SENSOR_DEVICE_ATTR_2(temp1_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1100                             set_temp_st, 0, 0);
1101 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
1102 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
1103 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1104                             MAX, 1);
1105 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1106                             MIN, 1);
1107 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1108                             set_temp, OFFSET, 1);
1109 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
1110                             show_temp, set_temp, AUTOMIN, 1);
1111 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
1112                             show_point2, set_point2, 0, 1);
1113 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1114                             THERM, 1);
1115 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1116                             set_temp, HYSTERSIS, 1);
1117 static SENSOR_DEVICE_ATTR_2(temp2_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1118                             set_temp_st, 0, 1);
1119 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
1120 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
1121 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
1122 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1123                             MAX, 2);
1124 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1125                             MIN, 2);
1126 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1127                             set_temp, OFFSET, 2);
1128 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
1129                             show_temp, set_temp, AUTOMIN, 2);
1130 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
1131                             show_point2, set_point2, 0, 2);
1132 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1133                             THERM, 2);
1134 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1135                             set_temp, HYSTERSIS, 2);
1136 static SENSOR_DEVICE_ATTR_2(temp3_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1137                             set_temp_st, 0, 2);
1138 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
1139 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1140                             MIN, 0);
1141 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
1142 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
1143 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1144                             MIN, 1);
1145 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
1146 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
1147 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1148                             MIN, 2);
1149 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
1150 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
1151 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1152                             MIN, 3);
1153 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
1154 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1155                             0);
1156 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1157                             set_pwmfreq, INPUT, 0);
1158 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1159                             set_pwmctrl, INPUT, 0);
1160 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1161                             show_pwmchan, set_pwmchan, INPUT, 0);
1162 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1163                             set_pwm, MIN, 0);
1164 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1165                             set_pwm, MAX, 0);
1166 static SENSOR_DEVICE_ATTR_2(pwm1_stall_disable, S_IRUGO | S_IWUSR,
1167                             show_stall_disable, set_stall_disable, 0, 0);
1168 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1169                             1);
1170 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1171                             set_pwmfreq, INPUT, 1);
1172 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1173                             set_pwmctrl, INPUT, 1);
1174 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1175                             show_pwmchan, set_pwmchan, INPUT, 1);
1176 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1177                             set_pwm, MIN, 1);
1178 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1179                             set_pwm, MAX, 1);
1180 static SENSOR_DEVICE_ATTR_2(pwm2_stall_disable, S_IRUGO | S_IWUSR,
1181                             show_stall_disable, set_stall_disable, 0, 1);
1182 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1183                             2);
1184 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1185                             set_pwmfreq, INPUT, 2);
1186 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1187                             set_pwmctrl, INPUT, 2);
1188 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1189                             show_pwmchan, set_pwmchan, INPUT, 2);
1190 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1191                             set_pwm, MIN, 2);
1192 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1193                             set_pwm, MAX, 2);
1194 static SENSOR_DEVICE_ATTR_2(pwm3_stall_disable, S_IRUGO | S_IWUSR,
1195                             show_stall_disable, set_stall_disable, 0, 2);
1196
1197 /* Non-standard name, might need revisiting */
1198 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1199
1200 static DEVICE_ATTR_RW(vrm);
1201 static DEVICE_ATTR_RO(cpu0_vid);
1202
1203 static struct attribute *adt7475_attrs[] = {
1204         &sensor_dev_attr_in1_input.dev_attr.attr,
1205         &sensor_dev_attr_in1_max.dev_attr.attr,
1206         &sensor_dev_attr_in1_min.dev_attr.attr,
1207         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1208         &sensor_dev_attr_in2_input.dev_attr.attr,
1209         &sensor_dev_attr_in2_max.dev_attr.attr,
1210         &sensor_dev_attr_in2_min.dev_attr.attr,
1211         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1212         &sensor_dev_attr_temp1_input.dev_attr.attr,
1213         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1214         &sensor_dev_attr_temp1_fault.dev_attr.attr,
1215         &sensor_dev_attr_temp1_max.dev_attr.attr,
1216         &sensor_dev_attr_temp1_min.dev_attr.attr,
1217         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1218         &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1219         &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1220         &sensor_dev_attr_temp1_crit.dev_attr.attr,
1221         &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1222         &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1223         &sensor_dev_attr_temp2_input.dev_attr.attr,
1224         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1225         &sensor_dev_attr_temp2_max.dev_attr.attr,
1226         &sensor_dev_attr_temp2_min.dev_attr.attr,
1227         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1228         &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1229         &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1230         &sensor_dev_attr_temp2_crit.dev_attr.attr,
1231         &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1232         &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1233         &sensor_dev_attr_temp3_input.dev_attr.attr,
1234         &sensor_dev_attr_temp3_fault.dev_attr.attr,
1235         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1236         &sensor_dev_attr_temp3_max.dev_attr.attr,
1237         &sensor_dev_attr_temp3_min.dev_attr.attr,
1238         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1239         &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1240         &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1241         &sensor_dev_attr_temp3_crit.dev_attr.attr,
1242         &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1243         &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1244         &sensor_dev_attr_fan1_input.dev_attr.attr,
1245         &sensor_dev_attr_fan1_min.dev_attr.attr,
1246         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1247         &sensor_dev_attr_fan2_input.dev_attr.attr,
1248         &sensor_dev_attr_fan2_min.dev_attr.attr,
1249         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1250         &sensor_dev_attr_fan3_input.dev_attr.attr,
1251         &sensor_dev_attr_fan3_min.dev_attr.attr,
1252         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1253         &sensor_dev_attr_pwm1.dev_attr.attr,
1254         &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1255         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1256         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1257         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1258         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1259         &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1260         &sensor_dev_attr_pwm3.dev_attr.attr,
1261         &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1262         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1263         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1264         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1265         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1266         &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1267         &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1268         NULL,
1269 };
1270
1271 static struct attribute *fan4_attrs[] = {
1272         &sensor_dev_attr_fan4_input.dev_attr.attr,
1273         &sensor_dev_attr_fan4_min.dev_attr.attr,
1274         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1275         NULL
1276 };
1277
1278 static struct attribute *pwm2_attrs[] = {
1279         &sensor_dev_attr_pwm2.dev_attr.attr,
1280         &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1281         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1282         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1283         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1284         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1285         &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1286         NULL
1287 };
1288
1289 static struct attribute *in0_attrs[] = {
1290         &sensor_dev_attr_in0_input.dev_attr.attr,
1291         &sensor_dev_attr_in0_max.dev_attr.attr,
1292         &sensor_dev_attr_in0_min.dev_attr.attr,
1293         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1294         NULL
1295 };
1296
1297 static struct attribute *in3_attrs[] = {
1298         &sensor_dev_attr_in3_input.dev_attr.attr,
1299         &sensor_dev_attr_in3_max.dev_attr.attr,
1300         &sensor_dev_attr_in3_min.dev_attr.attr,
1301         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1302         NULL
1303 };
1304
1305 static struct attribute *in4_attrs[] = {
1306         &sensor_dev_attr_in4_input.dev_attr.attr,
1307         &sensor_dev_attr_in4_max.dev_attr.attr,
1308         &sensor_dev_attr_in4_min.dev_attr.attr,
1309         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1310         NULL
1311 };
1312
1313 static struct attribute *in5_attrs[] = {
1314         &sensor_dev_attr_in5_input.dev_attr.attr,
1315         &sensor_dev_attr_in5_max.dev_attr.attr,
1316         &sensor_dev_attr_in5_min.dev_attr.attr,
1317         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1318         NULL
1319 };
1320
1321 static struct attribute *vid_attrs[] = {
1322         &dev_attr_cpu0_vid.attr,
1323         &dev_attr_vrm.attr,
1324         NULL
1325 };
1326
1327 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1328 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1329 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1330 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1331 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1332 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1333 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1334 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1335
1336 static int adt7475_detect(struct i2c_client *client,
1337                           struct i2c_board_info *info)
1338 {
1339         struct i2c_adapter *adapter = client->adapter;
1340         int vendid, devid, devid2;
1341         const char *name;
1342
1343         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1344                 return -ENODEV;
1345
1346         vendid = adt7475_read(REG_VENDID);
1347         devid2 = adt7475_read(REG_DEVID2);
1348         if (vendid != 0x41 ||           /* Analog Devices */
1349             (devid2 & 0xf8) != 0x68)
1350                 return -ENODEV;
1351
1352         devid = adt7475_read(REG_DEVID);
1353         if (devid == 0x73)
1354                 name = "adt7473";
1355         else if (devid == 0x75 && client->addr == 0x2e)
1356                 name = "adt7475";
1357         else if (devid == 0x76)
1358                 name = "adt7476";
1359         else if ((devid2 & 0xfc) == 0x6c)
1360                 name = "adt7490";
1361         else {
1362                 dev_dbg(&adapter->dev,
1363                         "Couldn't detect an ADT7473/75/76/90 part at "
1364                         "0x%02x\n", (unsigned int)client->addr);
1365                 return -ENODEV;
1366         }
1367
1368         strlcpy(info->type, name, I2C_NAME_SIZE);
1369
1370         return 0;
1371 }
1372
1373 static void adt7475_remove_files(struct i2c_client *client,
1374                                  struct adt7475_data *data)
1375 {
1376         sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1377         if (data->has_fan4)
1378                 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1379         if (data->has_pwm2)
1380                 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1381         if (data->has_voltage & (1 << 0))
1382                 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1383         if (data->has_voltage & (1 << 3))
1384                 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1385         if (data->has_voltage & (1 << 4))
1386                 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1387         if (data->has_voltage & (1 << 5))
1388                 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1389         if (data->has_vid)
1390                 sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
1391 }
1392
1393 static int adt7475_probe(struct i2c_client *client,
1394                          const struct i2c_device_id *id)
1395 {
1396         enum chips chip;
1397         static const char * const names[] = {
1398                 [adt7473] = "ADT7473",
1399                 [adt7475] = "ADT7475",
1400                 [adt7476] = "ADT7476",
1401                 [adt7490] = "ADT7490",
1402         };
1403
1404         struct adt7475_data *data;
1405         int i, ret = 0, revision;
1406         u8 config2, config3;
1407
1408         data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1409         if (data == NULL)
1410                 return -ENOMEM;
1411
1412         mutex_init(&data->lock);
1413         i2c_set_clientdata(client, data);
1414
1415         if (client->dev.of_node)
1416                 chip = (enum chips)of_device_get_match_data(&client->dev);
1417         else
1418                 chip = id->driver_data;
1419
1420         /* Initialize device-specific values */
1421         switch (chip) {
1422         case adt7476:
1423                 data->has_voltage = 0x0e;       /* in1 to in3 */
1424                 revision = adt7475_read(REG_DEVID2) & 0x07;
1425                 break;
1426         case adt7490:
1427                 data->has_voltage = 0x3e;       /* in1 to in5 */
1428                 revision = adt7475_read(REG_DEVID2) & 0x03;
1429                 if (revision == 0x03)
1430                         revision += adt7475_read(REG_DEVREV2);
1431                 break;
1432         default:
1433                 data->has_voltage = 0x06;       /* in1, in2 */
1434                 revision = adt7475_read(REG_DEVID2) & 0x07;
1435         }
1436
1437         config3 = adt7475_read(REG_CONFIG3);
1438         /* Pin PWM2 may alternatively be used for ALERT output */
1439         if (!(config3 & CONFIG3_SMBALERT))
1440                 data->has_pwm2 = 1;
1441         /* Meaning of this bit is inverted for the ADT7473-1 */
1442         if (id->driver_data == adt7473 && revision >= 1)
1443                 data->has_pwm2 = !data->has_pwm2;
1444
1445         data->config4 = adt7475_read(REG_CONFIG4);
1446         /* Pin TACH4 may alternatively be used for THERM */
1447         if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1448                 data->has_fan4 = 1;
1449
1450         /*
1451          * THERM configuration is more complex on the ADT7476 and ADT7490,
1452          * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1453          * this function
1454          */
1455         if (id->driver_data == adt7490) {
1456                 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1457                     !(config3 & CONFIG3_THERM))
1458                         data->has_fan4 = 1;
1459         }
1460         if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1461                 if (!(config3 & CONFIG3_THERM) ||
1462                     (data->config4 & CONFIG4_PINFUNC) == 0x1)
1463                         data->has_voltage |= (1 << 0);          /* in0 */
1464         }
1465
1466         /*
1467          * On the ADT7476, the +12V input pin may instead be used as VID5,
1468          * and VID pins may alternatively be used as GPIO
1469          */
1470         if (id->driver_data == adt7476) {
1471                 u8 vid = adt7475_read(REG_VID);
1472                 if (!(vid & VID_VIDSEL))
1473                         data->has_voltage |= (1 << 4);          /* in4 */
1474
1475                 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1476         }
1477
1478         /* Voltage attenuators can be bypassed, globally or individually */
1479         config2 = adt7475_read(REG_CONFIG2);
1480         if (config2 & CONFIG2_ATTN) {
1481                 data->bypass_attn = (0x3 << 3) | 0x3;
1482         } else {
1483                 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1484                                     ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1485         }
1486         data->bypass_attn &= data->has_voltage;
1487
1488         /*
1489          * Call adt7475_read_pwm for all pwm's as this will reprogram any
1490          * pwm's which are disabled to manual mode with 0% duty cycle
1491          */
1492         for (i = 0; i < ADT7475_PWM_COUNT; i++)
1493                 adt7475_read_pwm(client, i);
1494
1495         /* Start monitoring */
1496         switch (chip) {
1497         case adt7475:
1498         case adt7476:
1499                 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1500                                           adt7475_read(REG_CONFIG1) | 0x01);
1501                 break;
1502         default:
1503                 break;
1504         }
1505
1506         ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1507         if (ret)
1508                 return ret;
1509
1510         /* Features that can be disabled individually */
1511         if (data->has_fan4) {
1512                 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1513                 if (ret)
1514                         goto eremove;
1515         }
1516         if (data->has_pwm2) {
1517                 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1518                 if (ret)
1519                         goto eremove;
1520         }
1521         if (data->has_voltage & (1 << 0)) {
1522                 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1523                 if (ret)
1524                         goto eremove;
1525         }
1526         if (data->has_voltage & (1 << 3)) {
1527                 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1528                 if (ret)
1529                         goto eremove;
1530         }
1531         if (data->has_voltage & (1 << 4)) {
1532                 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1533                 if (ret)
1534                         goto eremove;
1535         }
1536         if (data->has_voltage & (1 << 5)) {
1537                 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1538                 if (ret)
1539                         goto eremove;
1540         }
1541         if (data->has_vid) {
1542                 data->vrm = vid_which_vrm();
1543                 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
1544                 if (ret)
1545                         goto eremove;
1546         }
1547
1548         data->hwmon_dev = hwmon_device_register(&client->dev);
1549         if (IS_ERR(data->hwmon_dev)) {
1550                 ret = PTR_ERR(data->hwmon_dev);
1551                 goto eremove;
1552         }
1553
1554         dev_info(&client->dev, "%s device, revision %d\n",
1555                  names[id->driver_data], revision);
1556         if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1557                 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1558                          (data->has_voltage & (1 << 0)) ? " in0" : "",
1559                          (data->has_voltage & (1 << 4)) ? " in4" : "",
1560                          data->has_fan4 ? " fan4" : "",
1561                          data->has_pwm2 ? " pwm2" : "",
1562                          data->has_vid ? " vid" : "");
1563         if (data->bypass_attn)
1564                 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1565                          (data->bypass_attn & (1 << 0)) ? " in0" : "",
1566                          (data->bypass_attn & (1 << 1)) ? " in1" : "",
1567                          (data->bypass_attn & (1 << 3)) ? " in3" : "",
1568                          (data->bypass_attn & (1 << 4)) ? " in4" : "");
1569
1570         return 0;
1571
1572 eremove:
1573         adt7475_remove_files(client, data);
1574         return ret;
1575 }
1576
1577 static int adt7475_remove(struct i2c_client *client)
1578 {
1579         struct adt7475_data *data = i2c_get_clientdata(client);
1580
1581         hwmon_device_unregister(data->hwmon_dev);
1582         adt7475_remove_files(client, data);
1583
1584         return 0;
1585 }
1586
1587 static struct i2c_driver adt7475_driver = {
1588         .class          = I2C_CLASS_HWMON,
1589         .driver = {
1590                 .name   = "adt7475",
1591                 .of_match_table = of_match_ptr(adt7475_of_match),
1592         },
1593         .probe          = adt7475_probe,
1594         .remove         = adt7475_remove,
1595         .id_table       = adt7475_id,
1596         .detect         = adt7475_detect,
1597         .address_list   = normal_i2c,
1598 };
1599
1600 static void adt7475_read_hystersis(struct i2c_client *client)
1601 {
1602         struct adt7475_data *data = i2c_get_clientdata(client);
1603
1604         data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1605         data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1606         data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1607 }
1608
1609 static void adt7475_read_pwm(struct i2c_client *client, int index)
1610 {
1611         struct adt7475_data *data = i2c_get_clientdata(client);
1612         unsigned int v;
1613
1614         data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1615
1616         /*
1617          * Figure out the internal value for pwmctrl and pwmchan
1618          * based on the current settings
1619          */
1620         v = (data->pwm[CONTROL][index] >> 5) & 7;
1621
1622         if (v == 3)
1623                 data->pwmctl[index] = 0;
1624         else if (v == 7)
1625                 data->pwmctl[index] = 1;
1626         else if (v == 4) {
1627                 /*
1628                  * The fan is disabled - we don't want to
1629                  * support that, so change to manual mode and
1630                  * set the duty cycle to 0 instead
1631                  */
1632                 data->pwm[INPUT][index] = 0;
1633                 data->pwm[CONTROL][index] &= ~0xE0;
1634                 data->pwm[CONTROL][index] |= (7 << 5);
1635
1636                 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1637                                           data->pwm[INPUT][index]);
1638
1639                 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1640                                           data->pwm[CONTROL][index]);
1641
1642                 data->pwmctl[index] = 1;
1643         } else {
1644                 data->pwmctl[index] = 2;
1645
1646                 switch (v) {
1647                 case 0:
1648                         data->pwmchan[index] = 1;
1649                         break;
1650                 case 1:
1651                         data->pwmchan[index] = 2;
1652                         break;
1653                 case 2:
1654                         data->pwmchan[index] = 4;
1655                         break;
1656                 case 5:
1657                         data->pwmchan[index] = 6;
1658                         break;
1659                 case 6:
1660                         data->pwmchan[index] = 7;
1661                         break;
1662                 }
1663         }
1664 }
1665
1666 static struct adt7475_data *adt7475_update_device(struct device *dev)
1667 {
1668         struct i2c_client *client = to_i2c_client(dev);
1669         struct adt7475_data *data = i2c_get_clientdata(client);
1670         u16 ext;
1671         int i;
1672
1673         mutex_lock(&data->lock);
1674
1675         /* Measurement values update every 2 seconds */
1676         if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1677             !data->valid) {
1678                 data->alarms = adt7475_read(REG_STATUS2) << 8;
1679                 data->alarms |= adt7475_read(REG_STATUS1);
1680
1681                 ext = (adt7475_read(REG_EXTEND2) << 8) |
1682                         adt7475_read(REG_EXTEND1);
1683                 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1684                         if (!(data->has_voltage & (1 << i)))
1685                                 continue;
1686                         data->voltage[INPUT][i] =
1687                                 (adt7475_read(VOLTAGE_REG(i)) << 2) |
1688                                 ((ext >> (i * 2)) & 3);
1689                 }
1690
1691                 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1692                         data->temp[INPUT][i] =
1693                                 (adt7475_read(TEMP_REG(i)) << 2) |
1694                                 ((ext >> ((i + 5) * 2)) & 3);
1695
1696                 if (data->has_voltage & (1 << 5)) {
1697                         data->alarms |= adt7475_read(REG_STATUS4) << 24;
1698                         ext = adt7475_read(REG_EXTEND3);
1699                         data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
1700                                 ((ext >> 4) & 3);
1701                 }
1702
1703                 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1704                         if (i == 3 && !data->has_fan4)
1705                                 continue;
1706                         data->tach[INPUT][i] =
1707                                 adt7475_read_word(client, TACH_REG(i));
1708                 }
1709
1710                 /* Updated by hw when in auto mode */
1711                 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1712                         if (i == 1 && !data->has_pwm2)
1713                                 continue;
1714                         data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1715                 }
1716
1717                 if (data->has_vid)
1718                         data->vid = adt7475_read(REG_VID) & 0x3f;
1719
1720                 data->measure_updated = jiffies;
1721         }
1722
1723         /* Limits and settings, should never change update every 60 seconds */
1724         if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1725             !data->valid) {
1726                 data->config4 = adt7475_read(REG_CONFIG4);
1727                 data->config5 = adt7475_read(REG_CONFIG5);
1728
1729                 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1730                         if (!(data->has_voltage & (1 << i)))
1731                                 continue;
1732                         /* Adjust values so they match the input precision */
1733                         data->voltage[MIN][i] =
1734                                 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1735                         data->voltage[MAX][i] =
1736                                 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1737                 }
1738
1739                 if (data->has_voltage & (1 << 5)) {
1740                         data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
1741                         data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
1742                 }
1743
1744                 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1745                         /* Adjust values so they match the input precision */
1746                         data->temp[MIN][i] =
1747                                 adt7475_read(TEMP_MIN_REG(i)) << 2;
1748                         data->temp[MAX][i] =
1749                                 adt7475_read(TEMP_MAX_REG(i)) << 2;
1750                         data->temp[AUTOMIN][i] =
1751                                 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1752                         data->temp[THERM][i] =
1753                                 adt7475_read(TEMP_THERM_REG(i)) << 2;
1754                         data->temp[OFFSET][i] =
1755                                 adt7475_read(TEMP_OFFSET_REG(i));
1756                 }
1757                 adt7475_read_hystersis(client);
1758
1759                 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1760                         if (i == 3 && !data->has_fan4)
1761                                 continue;
1762                         data->tach[MIN][i] =
1763                                 adt7475_read_word(client, TACH_MIN_REG(i));
1764                 }
1765
1766                 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1767                         if (i == 1 && !data->has_pwm2)
1768                                 continue;
1769                         data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1770                         data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1771                         /* Set the channel and control information */
1772                         adt7475_read_pwm(client, i);
1773                 }
1774
1775                 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1776                 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1777                 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1778
1779                 data->limits_updated = jiffies;
1780                 data->valid = 1;
1781         }
1782
1783         mutex_unlock(&data->lock);
1784
1785         return data;
1786 }
1787
1788 module_i2c_driver(adt7475_driver);
1789
1790 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1791 MODULE_DESCRIPTION("adt7475 driver");
1792 MODULE_LICENSE("GPL");