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