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 <[email protected]>
   5  * Copyright (C) 2008 Hans de Goede <[email protected]>
   6  * Copyright (C) 2009 Jean Delvare <[email protected]>
   7  *
   8  * Derived from the lm83 driver by Jean Delvare
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/of_device.h>
  17 #include <linux/init.h>
  18 #include <linux/slab.h>
  19 #include <linux/i2c.h>
  20 #include <linux/hwmon.h>
  21 #include <linux/hwmon-sysfs.h>
  22 #include <linux/hwmon-vid.h>
  23 #include <linux/err.h>
  24 #include <linux/jiffies.h>
  25 #include <linux/util_macros.h>
  26
  27 /* Indexes for the sysfs hooks */
  28
  29 #define INPUT           0
  30 #define MIN             1
  31 #define MAX             2
  32 #define CONTROL         3
  33 #define OFFSET          3
  34 #define AUTOMIN         4
  35 #define THERM           5
  36 #define HYSTERSIS       6
  37
  38 /*
  39  * These are unique identifiers for the sysfs functions - unlike the
  40  * numbers above, these are not also indexes into an array
  41  */
  42
  43 #define ALARM           9
  44 #define FAULT           10
  45
  46 /* 7475 Common Registers */
  47
  48 #define REG_DEVREV2             0x12    /* ADT7490 only */
  49
  50 #define REG_VTT                 0x1E    /* ADT7490 only */
  51 #define REG_EXTEND3             0x1F    /* ADT7490 only */
  52
  53 #define REG_VOLTAGE_BASE        0x20
  54 #define REG_TEMP_BASE           0x25
  55 #define REG_TACH_BASE           0x28
  56 #define REG_PWM_BASE            0x30
  57 #define REG_PWM_MAX_BASE        0x38
  58
  59 #define REG_DEVID               0x3D
  60 #define REG_VENDID              0x3E
  61 #define REG_DEVID2              0x3F
  62
  63 #define REG_CONFIG1             0x40
  64
  65 #define REG_STATUS1             0x41
  66 #define REG_STATUS2             0x42
  67
  68 #define REG_VID                 0x43    /* ADT7476 only */
  69
  70 #define REG_VOLTAGE_MIN_BASE    0x44
  71 #define REG_VOLTAGE_MAX_BASE    0x45
  72
  73 #define REG_TEMP_MIN_BASE       0x4E
  74 #define REG_TEMP_MAX_BASE       0x4F
  75
  76 #define REG_TACH_MIN_BASE       0x54
  77
  78 #define REG_PWM_CONFIG_BASE     0x5C
  79
  80 #define REG_TEMP_TRANGE_BASE    0x5F
  81
  82 #define REG_ENHANCE_ACOUSTICS1  0x62
  83 #define REG_ENHANCE_ACOUSTICS2  0x63
  84
  85 #define REG_PWM_MIN_BASE        0x64
  86
  87 #define REG_TEMP_TMIN_BASE      0x67
  88 #define REG_TEMP_THERM_BASE     0x6A
  89
  90 #define REG_REMOTE1_HYSTERSIS   0x6D
  91 #define REG_REMOTE2_HYSTERSIS   0x6E
  92
  93 #define REG_TEMP_OFFSET_BASE    0x70
  94
  95 #define REG_CONFIG2             0x73
  96
  97 #define REG_EXTEND1             0x76
  98 #define REG_EXTEND2             0x77
  99
 100 #define REG_CONFIG3             0x78
 101 #define REG_CONFIG5             0x7C
 102 #define REG_CONFIG4             0x7D
 103
 104 #define REG_STATUS4             0x81    /* ADT7490 only */
 105
 106 #define REG_VTT_MIN             0x84    /* ADT7490 only */
 107 #define REG_VTT_MAX             0x86    /* ADT7490 only */
 108
 109 #define VID_VIDSEL              0x80    /* ADT7476 only */
 110
 111 #define CONFIG2_ATTN            0x20
 112
 113 #define CONFIG3_SMBALERT        0x01
 114 #define CONFIG3_THERM           0x02
 115
 116 #define CONFIG4_PINFUNC         0x03
 117 #define CONFIG4_MAXDUTY         0x08
 118 #define CONFIG4_ATTN_IN10       0x30
 119 #define CONFIG4_ATTN_IN43       0xC0
 120
 121 #define CONFIG5_TWOSCOMP        0x01
 122 #define CONFIG5_TEMPOFFSET      0x02
 123 #define CONFIG5_VIDGPIO         0x10    /* ADT7476 only */
 124
 125 /* ADT7475 Settings */
 126
 127 #define ADT7475_VOLTAGE_COUNT   5       /* Not counting Vtt */
 128 #define ADT7475_TEMP_COUNT      3
 129 #define ADT7475_TACH_COUNT      4
 130 #define ADT7475_PWM_COUNT       3
 131
 132 /* Macro to read the registers */
 133
 134 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
 135
 136 /* Macros to easily index the registers */
 137
 138 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
 139 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
 140
 141 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
 142 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
 143 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
 144 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
 145
 146 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
 147 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
 148 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
 149
 150 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
 151 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
 152 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
 153 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
 154 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
 155 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
 156 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
 157
 158 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
 159
 160 enum chips { adt7473, adt7475, adt7476, adt7490 };
 161
 162 static const struct i2c_device_id adt7475_id[] = {
 163         { "adt7473", adt7473 },
 164         { "adt7475", adt7475 },
 165         { "adt7476", adt7476 },
 166         { "adt7490", adt7490 },
 167         { }
 168 };
 169 MODULE_DEVICE_TABLE(i2c, adt7475_id);
 170
 171 static const struct of_device_id adt7475_of_match[] = {
 172         {
 173                 .compatible = "adi,adt7473",
 174                 .data = (void *)adt7473
 175         },
 176         {
 177                 .compatible = "adi,adt7475",
 178                 .data = (void *)adt7475
 179         },
 180         {
 181                 .compatible = "adi,adt7476",
 182                 .data = (void *)adt7476
 183         },
 184         {
 185                 .compatible = "adi,adt7490",
 186                 .data = (void *)adt7490
 187         },
 188         { },
 189 };
 190 MODULE_DEVICE_TABLE(of, adt7475_of_match);
 191
 192 struct adt7475_data {
 193         struct device *hwmon_dev;
 194         struct mutex lock;
 195
 196         unsigned long measure_updated;
 197         bool valid;
 198
 199         u8 config4;
 200         u8 config5;
 201         u8 has_voltage;
 202         u8 bypass_attn;         /* Bypass voltage attenuator */
 203         u8 has_pwm2:1;
 204         u8 has_fan4:1;
 205         u8 has_vid:1;
 206         u32 alarms;
 207         u16 voltage[3][6];
 208         u16 temp[7][3];
 209         u16 tach[2][4];
 210         u8 pwm[4][3];
 211         u8 range[3];
 212         u8 pwmctl[3];
 213         u8 pwmchan[3];
 214         u8 enh_acoustics[2];
 215
 216         u8 vid;
 217         u8 vrm;
 218 };
 219
 220 static struct i2c_driver adt7475_driver;
 221 static struct adt7475_data *adt7475_update_device(struct device *dev);
 222 static void adt7475_read_hystersis(struct i2c_client *client);
 223 static void adt7475_read_pwm(struct i2c_client *client, int index);
 224
 225 /* Given a temp value, convert it to register value */
 226
 227 static inline u16 temp2reg(struct adt7475_data *data, long val)
 228 {
 229         u16 ret;
 230
 231         if (!(data->config5 & CONFIG5_TWOSCOMP)) {
 232                 val = clamp_val(val, -64000, 191000);
 233                 ret = (val + 64500) / 1000;
 234         } else {
 235                 val = clamp_val(val, -128000, 127000);
 236                 if (val < -500)
 237                         ret = (256500 + val) / 1000;
 238                 else
 239                         ret = (val + 500) / 1000;
 240         }
 241
 242         return ret << 2;
 243 }
 244
 245 /* Given a register value, convert it to a real temp value */
 246
 247 static inline int reg2temp(struct adt7475_data *data, u16 reg)
 248 {
 249         if (data->config5 & CONFIG5_TWOSCOMP) {
 250                 if (reg >= 512)
 251                         return (reg - 1024) * 250;
 252                 else
 253                         return reg * 250;
 254         } else
 255                 return (reg - 256) * 250;
 256 }
 257
 258 static inline int tach2rpm(u16 tach)
 259 {
 260         if (tach == 0 || tach == 0xFFFF)
 261                 return 0;
 262
 263         return (90000 * 60) / tach;
 264 }
 265
 266 static inline u16 rpm2tach(unsigned long rpm)
 267 {
 268         if (rpm == 0)
 269                 return 0;
 270
 271         return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
 272 }
 273
 274 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
 275 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
 276         { 45, 94 },     /* +2.5V */
 277         { 175, 525 },   /* Vccp */
 278         { 68, 71 },     /* Vcc */
 279         { 93, 47 },     /* +5V */
 280         { 120, 20 },    /* +12V */
 281         { 45, 45 },     /* Vtt */
 282 };
 283
 284 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
 285 {
 286         const int *r = adt7473_in_scaling[channel];
 287
 288         if (bypass_attn & (1 << channel))
 289                 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
 290         return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
 291 }
 292
 293 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
 294 {
 295         const int *r = adt7473_in_scaling[channel];
 296         long reg;
 297
 298         if (bypass_attn & (1 << channel))
 299                 reg = (volt * 1024) / 2250;
 300         else
 301                 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
 302         return clamp_val(reg, 0, 1023) & (0xff << 2);
 303 }
 304
 305 static u16 adt7475_read_word(struct i2c_client *client, int reg)
 306 {
 307         u16 val;
 308
 309         val = i2c_smbus_read_byte_data(client, reg);
 310         val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
 311
 312         return val;
 313 }
 314
 315 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
 316 {
 317         i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
 318         i2c_smbus_write_byte_data(client, reg, val & 0xFF);
 319 }
 320
 321 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
 322                             char *buf)
 323 {
 324         struct adt7475_data *data = adt7475_update_device(dev);
 325         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 326         unsigned short val;
 327
 328         switch (sattr->nr) {
 329         case ALARM:
 330                 return sprintf(buf, "%d\n",
 331                                (data->alarms >> sattr->index) & 1);
 332         default:
 333                 val = data->voltage[sattr->nr][sattr->index];
 334                 return sprintf(buf, "%d\n",
 335                                reg2volt(sattr->index, val, data->bypass_attn));
 336         }
 337 }
 338
 339 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
 340                            const char *buf, size_t count)
 341 {
 342
 343         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 344         struct i2c_client *client = to_i2c_client(dev);
 345         struct adt7475_data *data = i2c_get_clientdata(client);
 346         unsigned char reg;
 347         long val;
 348
 349         if (kstrtol(buf, 10, &val))
 350                 return -EINVAL;
 351
 352         mutex_lock(&data->lock);
 353
 354         data->voltage[sattr->nr][sattr->index] =
 355                                 volt2reg(sattr->index, val, data->bypass_attn);
 356
 357         if (sattr->index < ADT7475_VOLTAGE_COUNT) {
 358                 if (sattr->nr == MIN)
 359                         reg = VOLTAGE_MIN_REG(sattr->index);
 360                 else
 361                         reg = VOLTAGE_MAX_REG(sattr->index);
 362         } else {
 363                 if (sattr->nr == MIN)
 364                         reg = REG_VTT_MIN;
 365                 else
 366                         reg = REG_VTT_MAX;
 367         }
 368
 369         i2c_smbus_write_byte_data(client, reg,
 370                                   data->voltage[sattr->nr][sattr->index] >> 2);
 371         mutex_unlock(&data->lock);
 372
 373         return count;
 374 }
 375
 376 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 377                          char *buf)
 378 {
 379         struct adt7475_data *data = adt7475_update_device(dev);
 380         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 381         int out;
 382
 383         switch (sattr->nr) {
 384         case HYSTERSIS:
 385                 mutex_lock(&data->lock);
 386                 out = data->temp[sattr->nr][sattr->index];
 387                 if (sattr->index != 1)
 388                         out = (out >> 4) & 0xF;
 389                 else
 390                         out = (out & 0xF);
 391                 /*
 392                  * Show the value as an absolute number tied to
 393                  * THERM
 394                  */
 395                 out = reg2temp(data, data->temp[THERM][sattr->index]) -
 396                         out * 1000;
 397                 mutex_unlock(&data->lock);
 398                 break;
 399
 400         case OFFSET:
 401                 /*
 402                  * Offset is always 2's complement, regardless of the
 403                  * setting in CONFIG5
 404                  */
 405                 mutex_lock(&data->lock);
 406                 out = (s8)data->temp[sattr->nr][sattr->index];
 407                 if (data->config5 & CONFIG5_TEMPOFFSET)
 408                         out *= 1000;
 409                 else
 410                         out *= 500;
 411                 mutex_unlock(&data->lock);
 412                 break;
 413
 414         case ALARM:
 415                 out = (data->alarms >> (sattr->index + 4)) & 1;
 416                 break;
 417
 418         case FAULT:
 419                 /* Note - only for remote1 and remote2 */
 420                 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
 421                 break;
 422
 423         default:
 424                 /* All other temp values are in the configured format */
 425                 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
 426         }
 427
 428         return sprintf(buf, "%d\n", out);
 429 }
 430
 431 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 432                         const char *buf, size_t count)
 433 {
 434         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 435         struct i2c_client *client = to_i2c_client(dev);
 436         struct adt7475_data *data = i2c_get_clientdata(client);
 437         unsigned char reg = 0;
 438         u8 out;
 439         int temp;
 440         long val;
 441
 442         if (kstrtol(buf, 10, &val))
 443                 return -EINVAL;
 444
 445         mutex_lock(&data->lock);
 446
 447         /* We need the config register in all cases for temp <-> reg conv. */
 448         data->config5 = adt7475_read(REG_CONFIG5);
 449
 450         switch (sattr->nr) {
 451         case OFFSET:
 452                 if (data->config5 & CONFIG5_TEMPOFFSET) {
 453                         val = clamp_val(val, -63000, 127000);
 454                         out = data->temp[OFFSET][sattr->index] = val / 1000;
 455                 } else {
 456                         val = clamp_val(val, -63000, 64000);
 457                         out = data->temp[OFFSET][sattr->index] = val / 500;
 458                 }
 459                 break;
 460
 461         case HYSTERSIS:
 462                 /*
 463                  * The value will be given as an absolute value, turn it
 464                  * into an offset based on THERM
 465                  */
 466
 467                 /* Read fresh THERM and HYSTERSIS values from the chip */
 468                 data->temp[THERM][sattr->index] =
 469                         adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
 470                 adt7475_read_hystersis(client);
 471
 472                 temp = reg2temp(data, data->temp[THERM][sattr->index]);
 473                 val = clamp_val(val, temp - 15000, temp);
 474                 val = (temp - val) / 1000;
 475
 476                 if (sattr->index != 1) {
 477                         data->temp[HYSTERSIS][sattr->index] &= 0xF0;
 478                         data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
 479                 } else {
 480                         data->temp[HYSTERSIS][sattr->index] &= 0x0F;
 481                         data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
 482                 }
 483
 484                 out = data->temp[HYSTERSIS][sattr->index];
 485                 break;
 486
 487         default:
 488                 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
 489
 490                 /*
 491                  * We maintain an extra 2 digits of precision for simplicity
 492                  * - shift those back off before writing the value
 493                  */
 494                 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
 495         }
 496
 497         switch (sattr->nr) {
 498         case MIN:
 499                 reg = TEMP_MIN_REG(sattr->index);
 500                 break;
 501         case MAX:
 502                 reg = TEMP_MAX_REG(sattr->index);
 503                 break;
 504         case OFFSET:
 505                 reg = TEMP_OFFSET_REG(sattr->index);
 506                 break;
 507         case AUTOMIN:
 508                 reg = TEMP_TMIN_REG(sattr->index);
 509                 break;
 510         case THERM:
 511                 reg = TEMP_THERM_REG(sattr->index);
 512                 break;
 513         case HYSTERSIS:
 514                 if (sattr->index != 2)
 515                         reg = REG_REMOTE1_HYSTERSIS;
 516                 else
 517                         reg = REG_REMOTE2_HYSTERSIS;
 518
 519                 break;
 520         }
 521
 522         i2c_smbus_write_byte_data(client, reg, out);
 523
 524         mutex_unlock(&data->lock);
 525         return count;
 526 }
 527
 528 /* Assuming CONFIG6[SLOW] is 0 */
 529 static const int ad7475_st_map[] = {
 530         37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
 531 };
 532
 533 static ssize_t show_temp_st(struct device *dev, struct device_attribute *attr,
 534                                   char *buf)
 535 {
 536         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 537         struct i2c_client *client = to_i2c_client(dev);
 538         struct adt7475_data *data = i2c_get_clientdata(client);
 539         long val;
 540
 541         switch (sattr->index) {
 542         case 0:
 543                 val = data->enh_acoustics[0] & 0xf;
 544                 break;
 545         case 1:
 546                 val = (data->enh_acoustics[1] >> 4) & 0xf;
 547                 break;
 548         case 2:
 549         default:
 550                 val = data->enh_acoustics[1] & 0xf;
 551                 break;
 552         }
 553
 554         if (val & 0x8)
 555                 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
 556         else
 557                 return sprintf(buf, "0\n");
 558 }
 559
 560 static ssize_t set_temp_st(struct device *dev, struct device_attribute *attr,
 561                                  const char *buf, size_t count)
 562 {
 563         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 564         struct i2c_client *client = to_i2c_client(dev);
 565         struct adt7475_data *data = i2c_get_clientdata(client);
 566         unsigned char reg;
 567         int shift, idx;
 568         ulong val;
 569
 570         if (kstrtoul(buf, 10, &val))
 571                 return -EINVAL;
 572
 573         switch (sattr->index) {
 574         case 0:
 575                 reg = REG_ENHANCE_ACOUSTICS1;
 576                 shift = 0;
 577                 idx = 0;
 578                 break;
 579         case 1:
 580                 reg = REG_ENHANCE_ACOUSTICS2;
 581                 shift = 0;
 582                 idx = 1;
 583                 break;
 584         case 2:
 585         default:
 586                 reg = REG_ENHANCE_ACOUSTICS2;
 587                 shift = 4;
 588                 idx = 1;
 589                 break;
 590         }
 591
 592         if (val > 0) {
 593                 val = find_closest_descending(val, ad7475_st_map,
 594                                               ARRAY_SIZE(ad7475_st_map));
 595                 val |= 0x8;
 596         }
 597
 598         mutex_lock(&data->lock);
 599
 600         data->enh_acoustics[idx] &= ~(0xf << shift);
 601         data->enh_acoustics[idx] |= (val << shift);
 602
 603         i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
 604
 605         mutex_unlock(&data->lock);
 606
 607         return count;
 608 }
 609
 610 /*
 611  * Table of autorange values - the user will write the value in millidegrees,
 612  * and we'll convert it
 613  */
 614 static const int autorange_table[] = {
 615         2000, 2500, 3330, 4000, 5000, 6670, 8000,
 616         10000, 13330, 16000, 20000, 26670, 32000, 40000,
 617         53330, 80000
 618 };
 619
 620 static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
 621                            char *buf)
 622 {
 623         struct adt7475_data *data = adt7475_update_device(dev);
 624         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 625         int out, val;
 626
 627         mutex_lock(&data->lock);
 628         out = (data->range[sattr->index] >> 4) & 0x0F;
 629         val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
 630         mutex_unlock(&data->lock);
 631
 632         return sprintf(buf, "%d\n", val + autorange_table[out]);
 633 }
 634
 635 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
 636                           const char *buf, size_t count)
 637 {
 638         struct i2c_client *client = to_i2c_client(dev);
 639         struct adt7475_data *data = i2c_get_clientdata(client);
 640         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 641         int temp;
 642         long val;
 643
 644         if (kstrtol(buf, 10, &val))
 645                 return -EINVAL;
 646
 647         mutex_lock(&data->lock);
 648
 649         /* Get a fresh copy of the needed registers */
 650         data->config5 = adt7475_read(REG_CONFIG5);
 651         data->temp[AUTOMIN][sattr->index] =
 652                 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
 653         data->range[sattr->index] =
 654                 adt7475_read(TEMP_TRANGE_REG(sattr->index));
 655
 656         /*
 657          * The user will write an absolute value, so subtract the start point
 658          * to figure the range
 659          */
 660         temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
 661         val = clamp_val(val, temp + autorange_table[0],
 662                 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
 663         val -= temp;
 664
 665         /* Find the nearest table entry to what the user wrote */
 666         val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
 667
 668         data->range[sattr->index] &= ~0xF0;
 669         data->range[sattr->index] |= val << 4;
 670
 671         i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
 672                                   data->range[sattr->index]);
 673
 674         mutex_unlock(&data->lock);
 675         return count;
 676 }
 677
 678 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
 679                          char *buf)
 680 {
 681         struct adt7475_data *data = adt7475_update_device(dev);
 682         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 683         int out;
 684
 685         if (sattr->nr == ALARM)
 686                 out = (data->alarms >> (sattr->index + 10)) & 1;
 687         else
 688                 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
 689
 690         return sprintf(buf, "%d\n", out);
 691 }
 692
 693 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
 694                         const char *buf, size_t count)
 695 {
 696
 697         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 698         struct i2c_client *client = to_i2c_client(dev);
 699         struct adt7475_data *data = i2c_get_clientdata(client);
 700         unsigned long val;
 701
 702         if (kstrtoul(buf, 10, &val))
 703                 return -EINVAL;
 704
 705         mutex_lock(&data->lock);
 706
 707         data->tach[MIN][sattr->index] = rpm2tach(val);
 708
 709         adt7475_write_word(client, TACH_MIN_REG(sattr->index),
 710                            data->tach[MIN][sattr->index]);
 711
 712         mutex_unlock(&data->lock);
 713         return count;
 714 }
 715
 716 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 717                         char *buf)
 718 {
 719         struct adt7475_data *data = adt7475_update_device(dev);
 720         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 721
 722         return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
 723 }
 724
 725 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
 726                             char *buf)
 727 {
 728         struct adt7475_data *data = adt7475_update_device(dev);
 729         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 730
 731         return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
 732 }
 733
 734 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
 735                             char *buf)
 736 {
 737         struct adt7475_data *data = adt7475_update_device(dev);
 738         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 739
 740         return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
 741 }
 742
 743 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 744                        const char *buf, size_t count)
 745 {
 746
 747         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 748         struct i2c_client *client = to_i2c_client(dev);
 749         struct adt7475_data *data = i2c_get_clientdata(client);
 750         unsigned char reg = 0;
 751         long val;
 752
 753         if (kstrtol(buf, 10, &val))
 754                 return -EINVAL;
 755
 756         mutex_lock(&data->lock);
 757
 758         switch (sattr->nr) {
 759         case INPUT:
 760                 /* Get a fresh value for CONTROL */
 761                 data->pwm[CONTROL][sattr->index] =
 762                         adt7475_read(PWM_CONFIG_REG(sattr->index));
 763
 764                 /*
 765                  * If we are not in manual mode, then we shouldn't allow
 766                  * the user to set the pwm speed
 767                  */
 768                 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
 769                         mutex_unlock(&data->lock);
 770                         return count;
 771                 }
 772
 773                 reg = PWM_REG(sattr->index);
 774                 break;
 775
 776         case MIN:
 777                 reg = PWM_MIN_REG(sattr->index);
 778                 break;
 779
 780         case MAX:
 781                 reg = PWM_MAX_REG(sattr->index);
 782                 break;
 783         }
 784
 785         data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
 786         i2c_smbus_write_byte_data(client, reg,
 787                                   data->pwm[sattr->nr][sattr->index]);
 788         mutex_unlock(&data->lock);
 789
 790         return count;
 791 }
 792
 793 static ssize_t show_stall_disable(struct device *dev,
 794                                   struct device_attribute *attr, char *buf)
 795 {
 796         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 797         struct i2c_client *client = to_i2c_client(dev);
 798         struct adt7475_data *data = i2c_get_clientdata(client);
 799         u8 mask = BIT(5 + sattr->index);
 800
 801         return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
 802 }
 803
 804 static ssize_t set_stall_disable(struct device *dev,
 805                                  struct device_attribute *attr, const char *buf,
 806                                  size_t count)
 807 {
 808         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 809         struct i2c_client *client = to_i2c_client(dev);
 810         struct adt7475_data *data = i2c_get_clientdata(client);
 811         long val;
 812         u8 mask = BIT(5 + sattr->index);
 813
 814         if (kstrtol(buf, 10, &val))
 815                 return -EINVAL;
 816
 817         mutex_lock(&data->lock);
 818
 819         data->enh_acoustics[0] &= ~mask;
 820         if (val)
 821                 data->enh_acoustics[0] |= mask;
 822
 823         i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
 824                                   data->enh_acoustics[0]);
 825
 826         mutex_unlock(&data->lock);
 827
 828         return count;
 829 }
 830
 831 /* Called by set_pwmctrl and set_pwmchan */
 832
 833 static int hw_set_pwm(struct i2c_client *client, int index,
 834                       unsigned int pwmctl, unsigned int pwmchan)
 835 {
 836         struct adt7475_data *data = i2c_get_clientdata(client);
 837         long val = 0;
 838
 839         switch (pwmctl) {
 840         case 0:
 841                 val = 0x03;     /* Run at full speed */
 842                 break;
 843         case 1:
 844                 val = 0x07;     /* Manual mode */
 845                 break;
 846         case 2:
 847                 switch (pwmchan) {
 848                 case 1:
 849                         /* Remote1 controls PWM */
 850                         val = 0x00;
 851                         break;
 852                 case 2:
 853                         /* local controls PWM */
 854                         val = 0x01;
 855                         break;
 856                 case 4:
 857                         /* remote2 controls PWM */
 858                         val = 0x02;
 859                         break;
 860                 case 6:
 861                         /* local/remote2 control PWM */
 862                         val = 0x05;
 863                         break;
 864                 case 7:
 865                         /* All three control PWM */
 866                         val = 0x06;
 867                         break;
 868                 default:
 869                         return -EINVAL;
 870                 }
 871                 break;
 872         default:
 873                 return -EINVAL;
 874         }
 875
 876         data->pwmctl[index] = pwmctl;
 877         data->pwmchan[index] = pwmchan;
 878
 879         data->pwm[CONTROL][index] &= ~0xE0;
 880         data->pwm[CONTROL][index] |= (val & 7) << 5;
 881
 882         i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
 883                                   data->pwm[CONTROL][index]);
 884
 885         return 0;
 886 }
 887
 888 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
 889                            const char *buf, size_t count)
 890 {
 891         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 892         struct i2c_client *client = to_i2c_client(dev);
 893         struct adt7475_data *data = i2c_get_clientdata(client);
 894         int r;
 895         long val;
 896
 897         if (kstrtol(buf, 10, &val))
 898                 return -EINVAL;
 899
 900         mutex_lock(&data->lock);
 901         /* Read Modify Write PWM values */
 902         adt7475_read_pwm(client, sattr->index);
 903         r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
 904         if (r)
 905                 count = r;
 906         mutex_unlock(&data->lock);
 907
 908         return count;
 909 }
 910
 911 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
 912                            const char *buf, size_t count)
 913 {
 914         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 915         struct i2c_client *client = to_i2c_client(dev);
 916         struct adt7475_data *data = i2c_get_clientdata(client);
 917         int r;
 918         long val;
 919
 920         if (kstrtol(buf, 10, &val))
 921                 return -EINVAL;
 922
 923         mutex_lock(&data->lock);
 924         /* Read Modify Write PWM values */
 925         adt7475_read_pwm(client, sattr->index);
 926         r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
 927         if (r)
 928                 count = r;
 929         mutex_unlock(&data->lock);
 930
 931         return count;
 932 }
 933
 934 /* List of frequencies for the PWM */
 935 static const int pwmfreq_table[] = {
 936         11, 14, 22, 29, 35, 44, 58, 88, 22500
 937 };
 938
 939 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
 940                             char *buf)
 941 {
 942         struct adt7475_data *data = adt7475_update_device(dev);
 943         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 944         int i = clamp_val(data->range[sattr->index] & 0xf, 0,
 945                           ARRAY_SIZE(pwmfreq_table) - 1);
 946
 947         return sprintf(buf, "%d\n", pwmfreq_table[i]);
 948 }
 949
 950 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
 951                            const char *buf, size_t count)
 952 {
 953         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 954         struct i2c_client *client = to_i2c_client(dev);
 955         struct adt7475_data *data = i2c_get_clientdata(client);
 956         int out;
 957         long val;
 958
 959         if (kstrtol(buf, 10, &val))
 960                 return -EINVAL;
 961
 962         out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
 963
 964         mutex_lock(&data->lock);
 965
 966         data->range[sattr->index] =
 967                 adt7475_read(TEMP_TRANGE_REG(sattr->index));
 968         data->range[sattr->index] &= ~0xf;
 969         data->range[sattr->index] |= out;
 970
 971         i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
 972                                   data->range[sattr->index]);
 973
 974         mutex_unlock(&data->lock);
 975         return count;
 976 }
 977
 978 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
 979                                         struct device_attribute *devattr,
 980                                         char *buf)
 981 {
 982         struct adt7475_data *data = adt7475_update_device(dev);
 983         return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
 984 }
 985
 986 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
 987                                         struct device_attribute *devattr,
 988                                         const char *buf, size_t count)
 989 {
 990         struct i2c_client *client = to_i2c_client(dev);
 991         struct adt7475_data *data = i2c_get_clientdata(client);
 992         long val;
 993
 994         if (kstrtol(buf, 10, &val))
 995                 return -EINVAL;
 996         if (val != 0 && val != 1)
 997                 return -EINVAL;
 998
 999         mutex_lock(&data->lock);
1000         data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1001         if (val)
1002                 data->config4 |= CONFIG4_MAXDUTY;
1003         else
1004                 data->config4 &= ~CONFIG4_MAXDUTY;
1005         i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1006         mutex_unlock(&data->lock);
1007
1008         return count;
1009 }
1010
1011 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1012                         char *buf)
1013 {
1014         struct adt7475_data *data = dev_get_drvdata(dev);
1015         return sprintf(buf, "%d\n", (int)data->vrm);
1016 }
1017
1018 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1019                          const char *buf, size_t count)
1020 {
1021         struct adt7475_data *data = dev_get_drvdata(dev);
1022         long val;
1023
1024         if (kstrtol(buf, 10, &val))
1025                 return -EINVAL;
1026         if (val < 0 || val > 255)
1027                 return -EINVAL;
1028         data->vrm = val;
1029
1030         return count;
1031 }
1032
1033 static ssize_t cpu0_vid_show(struct device *dev,
1034                              struct device_attribute *devattr, char *buf)
1035 {
1036         struct adt7475_data *data = adt7475_update_device(dev);
1037         return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1038 }
1039
1040 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
1041 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
1042                             set_voltage, MAX, 0);
1043 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
1044                             set_voltage, MIN, 0);
1045 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
1046 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
1047 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
1048                             set_voltage, MAX, 1);
1049 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
1050                             set_voltage, MIN, 1);
1051 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
1052 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
1053 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
1054                             set_voltage, MAX, 2);
1055 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
1056                             set_voltage, MIN, 2);
1057 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
1058 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
1059 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
1060                             set_voltage, MAX, 3);
1061 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
1062                             set_voltage, MIN, 3);
1063 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
1064 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
1065 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
1066                             set_voltage, MAX, 4);
1067 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
1068                             set_voltage, MIN, 4);
1069 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
1070 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
1071 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
1072                             set_voltage, MAX, 5);
1073 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
1074                             set_voltage, MIN, 5);
1075 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
1076 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
1077 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
1078 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
1079 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1080                             MAX, 0);
1081 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1082                             MIN, 0);
1083 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
1084                             set_temp, OFFSET, 0);
1085 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
1086                             show_temp, set_temp, AUTOMIN, 0);
1087 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
1088                             show_point2, set_point2, 0, 0);
1089 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1090                             THERM, 0);
1091 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1092                             set_temp, HYSTERSIS, 0);
1093 static SENSOR_DEVICE_ATTR_2(temp1_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1094                             set_temp_st, 0, 0);
1095 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
1096 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
1097 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1098                             MAX, 1);
1099 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1100                             MIN, 1);
1101 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1102                             set_temp, OFFSET, 1);
1103 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
1104                             show_temp, set_temp, AUTOMIN, 1);
1105 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
1106                             show_point2, set_point2, 0, 1);
1107 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1108                             THERM, 1);
1109 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1110                             set_temp, HYSTERSIS, 1);
1111 static SENSOR_DEVICE_ATTR_2(temp2_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1112                             set_temp_st, 0, 1);
1113 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
1114 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
1115 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
1116 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1117                             MAX, 2);
1118 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1119                             MIN, 2);
1120 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1121                             set_temp, OFFSET, 2);
1122 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
1123                             show_temp, set_temp, AUTOMIN, 2);
1124 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
1125                             show_point2, set_point2, 0, 2);
1126 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1127                             THERM, 2);
1128 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1129                             set_temp, HYSTERSIS, 2);
1130 static SENSOR_DEVICE_ATTR_2(temp3_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1131                             set_temp_st, 0, 2);
1132 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
1133 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1134                             MIN, 0);
1135 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
1136 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
1137 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1138                             MIN, 1);
1139 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
1140 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
1141 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1142                             MIN, 2);
1143 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
1144 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
1145 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1146                             MIN, 3);
1147 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
1148 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1149                             0);
1150 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1151                             set_pwmfreq, INPUT, 0);
1152 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1153                             set_pwmctrl, INPUT, 0);
1154 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1155                             show_pwmchan, set_pwmchan, INPUT, 0);
1156 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1157                             set_pwm, MIN, 0);
1158 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1159                             set_pwm, MAX, 0);
1160 static SENSOR_DEVICE_ATTR_2(pwm1_stall_disable, S_IRUGO | S_IWUSR,
1161                             show_stall_disable, set_stall_disable, 0, 0);
1162 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1163                             1);
1164 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1165                             set_pwmfreq, INPUT, 1);
1166 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1167                             set_pwmctrl, INPUT, 1);
1168 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1169                             show_pwmchan, set_pwmchan, INPUT, 1);
1170 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1171                             set_pwm, MIN, 1);
1172 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1173                             set_pwm, MAX, 1);
1174 static SENSOR_DEVICE_ATTR_2(pwm2_stall_disable, S_IRUGO | S_IWUSR,
1175                             show_stall_disable, set_stall_disable, 0, 1);
1176 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1177                             2);
1178 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1179                             set_pwmfreq, INPUT, 2);
1180 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1181                             set_pwmctrl, INPUT, 2);
1182 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1183                             show_pwmchan, set_pwmchan, INPUT, 2);
1184 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1185                             set_pwm, MIN, 2);
1186 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1187                             set_pwm, MAX, 2);
1188 static SENSOR_DEVICE_ATTR_2(pwm3_stall_disable, S_IRUGO | S_IWUSR,
1189                             show_stall_disable, set_stall_disable, 0, 2);
1190
1191 /* Non-standard name, might need revisiting */
1192 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1193
1194 static DEVICE_ATTR_RW(vrm);
1195 static DEVICE_ATTR_RO(cpu0_vid);
1196
1197 static struct attribute *adt7475_attrs[] = {
1198         &sensor_dev_attr_in1_input.dev_attr.attr,
1199         &sensor_dev_attr_in1_max.dev_attr.attr,
1200         &sensor_dev_attr_in1_min.dev_attr.attr,
1201         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1202         &sensor_dev_attr_in2_input.dev_attr.attr,
1203         &sensor_dev_attr_in2_max.dev_attr.attr,
1204         &sensor_dev_attr_in2_min.dev_attr.attr,
1205         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1206         &sensor_dev_attr_temp1_input.dev_attr.attr,
1207         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1208         &sensor_dev_attr_temp1_fault.dev_attr.attr,
1209         &sensor_dev_attr_temp1_max.dev_attr.attr,
1210         &sensor_dev_attr_temp1_min.dev_attr.attr,
1211         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1212         &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1213         &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1214         &sensor_dev_attr_temp1_crit.dev_attr.attr,
1215         &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1216         &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1217         &sensor_dev_attr_temp2_input.dev_attr.attr,
1218         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1219         &sensor_dev_attr_temp2_max.dev_attr.attr,
1220         &sensor_dev_attr_temp2_min.dev_attr.attr,
1221         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1222         &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1223         &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1224         &sensor_dev_attr_temp2_crit.dev_attr.attr,
1225         &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1226         &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1227         &sensor_dev_attr_temp3_input.dev_attr.attr,
1228         &sensor_dev_attr_temp3_fault.dev_attr.attr,
1229         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1230         &sensor_dev_attr_temp3_max.dev_attr.attr,
1231         &sensor_dev_attr_temp3_min.dev_attr.attr,
1232         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1233         &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1234         &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1235         &sensor_dev_attr_temp3_crit.dev_attr.attr,
1236         &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1237         &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1238         &sensor_dev_attr_fan1_input.dev_attr.attr,
1239         &sensor_dev_attr_fan1_min.dev_attr.attr,
1240         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1241         &sensor_dev_attr_fan2_input.dev_attr.attr,
1242         &sensor_dev_attr_fan2_min.dev_attr.attr,
1243         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1244         &sensor_dev_attr_fan3_input.dev_attr.attr,
1245         &sensor_dev_attr_fan3_min.dev_attr.attr,
1246         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1247         &sensor_dev_attr_pwm1.dev_attr.attr,
1248         &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1249         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1250         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1251         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1252         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1253         &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1254         &sensor_dev_attr_pwm3.dev_attr.attr,
1255         &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1256         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1257         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1258         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1259         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1260         &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1261         &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1262         NULL,
1263 };
1264
1265 static struct attribute *fan4_attrs[] = {
1266         &sensor_dev_attr_fan4_input.dev_attr.attr,
1267         &sensor_dev_attr_fan4_min.dev_attr.attr,
1268         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1269         NULL
1270 };
1271
1272 static struct attribute *pwm2_attrs[] = {
1273         &sensor_dev_attr_pwm2.dev_attr.attr,
1274         &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1275         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1276         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1277         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1278         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1279         &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1280         NULL
1281 };
1282
1283 static struct attribute *in0_attrs[] = {
1284         &sensor_dev_attr_in0_input.dev_attr.attr,
1285         &sensor_dev_attr_in0_max.dev_attr.attr,
1286         &sensor_dev_attr_in0_min.dev_attr.attr,
1287         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1288         NULL
1289 };
1290
1291 static struct attribute *in3_attrs[] = {
1292         &sensor_dev_attr_in3_input.dev_attr.attr,
1293         &sensor_dev_attr_in3_max.dev_attr.attr,
1294         &sensor_dev_attr_in3_min.dev_attr.attr,
1295         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1296         NULL
1297 };
1298
1299 static struct attribute *in4_attrs[] = {
1300         &sensor_dev_attr_in4_input.dev_attr.attr,
1301         &sensor_dev_attr_in4_max.dev_attr.attr,
1302         &sensor_dev_attr_in4_min.dev_attr.attr,
1303         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1304         NULL
1305 };
1306
1307 static struct attribute *in5_attrs[] = {
1308         &sensor_dev_attr_in5_input.dev_attr.attr,
1309         &sensor_dev_attr_in5_max.dev_attr.attr,
1310         &sensor_dev_attr_in5_min.dev_attr.attr,
1311         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1312         NULL
1313 };
1314
1315 static struct attribute *vid_attrs[] = {
1316         &dev_attr_cpu0_vid.attr,
1317         &dev_attr_vrm.attr,
1318         NULL
1319 };
1320
1321 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1322 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1323 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1324 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1325 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1326 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1327 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1328 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1329
1330 static int adt7475_detect(struct i2c_client *client,
1331                           struct i2c_board_info *info)
1332 {
1333         struct i2c_adapter *adapter = client->adapter;
1334         int vendid, devid, devid2;
1335         const char *name;
1336
1337         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1338                 return -ENODEV;
1339
1340         vendid = adt7475_read(REG_VENDID);
1341         devid2 = adt7475_read(REG_DEVID2);
1342         if (vendid != 0x41 ||           /* Analog Devices */
1343             (devid2 & 0xf8) != 0x68)
1344                 return -ENODEV;
1345
1346         devid = adt7475_read(REG_DEVID);
1347         if (devid == 0x73)
1348                 name = "adt7473";
1349         else if (devid == 0x75 && client->addr == 0x2e)
1350                 name = "adt7475";
1351         else if (devid == 0x76)
1352                 name = "adt7476";
1353         else if ((devid2 & 0xfc) == 0x6c)
1354                 name = "adt7490";
1355         else {
1356                 dev_dbg(&adapter->dev,
1357                         "Couldn't detect an ADT7473/75/76/90 part at "
1358                         "0x%02x\n", (unsigned int)client->addr);
1359                 return -ENODEV;
1360         }
1361
1362         strlcpy(info->type, name, I2C_NAME_SIZE);
1363
1364         return 0;
1365 }
1366
1367 static void adt7475_remove_files(struct i2c_client *client,
1368                                  struct adt7475_data *data)
1369 {
1370         sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1371         if (data->has_fan4)
1372                 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1373         if (data->has_pwm2)
1374                 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1375         if (data->has_voltage & (1 << 0))
1376                 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1377         if (data->has_voltage & (1 << 3))
1378                 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1379         if (data->has_voltage & (1 << 4))
1380                 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1381         if (data->has_voltage & (1 << 5))
1382                 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1383         if (data->has_vid)
1384                 sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
1385 }
1386
1387 static int adt7475_update_limits(struct i2c_client *client)
1388 {
1389         struct adt7475_data *data = i2c_get_clientdata(client);
1390         int i;
1391         int ret;
1392
1393         ret = adt7475_read(REG_CONFIG4);
1394         if (ret < 0)
1395                 return ret;
1396         data->config4 = ret;
1397
1398         ret = adt7475_read(REG_CONFIG5);
1399         if (ret < 0)
1400                 return ret;
1401         data->config5 = ret;
1402
1403         for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1404                 if (!(data->has_voltage & (1 << i)))
1405                         continue;
1406                 /* Adjust values so they match the input precision */
1407                 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1408                 if (ret < 0)
1409                         return ret;
1410                 data->voltage[MIN][i] = ret << 2;
1411
1412                 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1413                 if (ret < 0)
1414                         return ret;
1415                 data->voltage[MAX][i] = ret << 2;
1416         }
1417
1418         if (data->has_voltage & (1 << 5)) {
1419                 ret = adt7475_read(REG_VTT_MIN);
1420                 if (ret < 0)
1421                         return ret;
1422                 data->voltage[MIN][5] = ret << 2;
1423
1424                 ret = adt7475_read(REG_VTT_MAX);
1425                 if (ret < 0)
1426                         return ret;
1427                 data->voltage[MAX][5] = ret << 2;
1428         }
1429
1430         for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1431                 /* Adjust values so they match the input precision */
1432                 ret = adt7475_read(TEMP_MIN_REG(i));
1433                 if (ret < 0)
1434                         return ret;
1435                 data->temp[MIN][i] = ret << 2;
1436
1437                 ret = adt7475_read(TEMP_MAX_REG(i));
1438                 if (ret < 0)
1439                         return ret;
1440                 data->temp[MAX][i] = ret << 2;
1441
1442                 ret = adt7475_read(TEMP_TMIN_REG(i));
1443                 if (ret < 0)
1444                         return ret;
1445                 data->temp[AUTOMIN][i] = ret << 2;
1446
1447                 ret = adt7475_read(TEMP_THERM_REG(i));
1448                 if (ret < 0)
1449                         return ret;
1450                 data->temp[THERM][i] = ret << 2;
1451
1452                 ret = adt7475_read(TEMP_OFFSET_REG(i));
1453                 if (ret < 0)
1454                         return ret;
1455                 data->temp[OFFSET][i] = ret;
1456         }
1457         adt7475_read_hystersis(client);
1458
1459         for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1460                 if (i == 3 && !data->has_fan4)
1461                         continue;
1462                 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1463                 if (ret < 0)
1464                         return ret;
1465                 data->tach[MIN][i] = ret;
1466         }
1467
1468         for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1469                 if (i == 1 && !data->has_pwm2)
1470                         continue;
1471                 ret = adt7475_read(PWM_MAX_REG(i));
1472                 if (ret < 0)
1473                         return ret;
1474                 data->pwm[MAX][i] = ret;
1475
1476                 ret = adt7475_read(PWM_MIN_REG(i));
1477                 if (ret < 0)
1478                         return ret;
1479                 data->pwm[MIN][i] = ret;
1480                 /* Set the channel and control information */
1481                 adt7475_read_pwm(client, i);
1482         }
1483
1484         ret = adt7475_read(TEMP_TRANGE_REG(0));
1485         if (ret < 0)
1486                 return ret;
1487         data->range[0] = ret;
1488
1489         ret = adt7475_read(TEMP_TRANGE_REG(1));
1490         if (ret < 0)
1491                 return ret;
1492         data->range[1] = ret;
1493
1494         ret = adt7475_read(TEMP_TRANGE_REG(2));
1495         if (ret < 0)
1496                 return ret;
1497         data->range[2] = ret;
1498
1499         return 0;
1500 }
1501
1502 static int adt7475_probe(struct i2c_client *client,
1503                          const struct i2c_device_id *id)
1504 {
1505         enum chips chip;
1506         static const char * const names[] = {
1507                 [adt7473] = "ADT7473",
1508                 [adt7475] = "ADT7475",
1509                 [adt7476] = "ADT7476",
1510                 [adt7490] = "ADT7490",
1511         };
1512
1513         struct adt7475_data *data;
1514         int i, ret = 0, revision;
1515         u8 config2, config3;
1516
1517         data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1518         if (data == NULL)
1519                 return -ENOMEM;
1520
1521         mutex_init(&data->lock);
1522         i2c_set_clientdata(client, data);
1523
1524         if (client->dev.of_node)
1525                 chip = (enum chips)of_device_get_match_data(&client->dev);
1526         else
1527                 chip = id->driver_data;
1528
1529         /* Initialize device-specific values */
1530         switch (chip) {
1531         case adt7476:
1532                 data->has_voltage = 0x0e;       /* in1 to in3 */
1533                 revision = adt7475_read(REG_DEVID2) & 0x07;
1534                 break;
1535         case adt7490:
1536                 data->has_voltage = 0x3e;       /* in1 to in5 */
1537                 revision = adt7475_read(REG_DEVID2) & 0x03;
1538                 if (revision == 0x03)
1539                         revision += adt7475_read(REG_DEVREV2);
1540                 break;
1541         default:
1542                 data->has_voltage = 0x06;       /* in1, in2 */
1543                 revision = adt7475_read(REG_DEVID2) & 0x07;
1544         }
1545
1546         config3 = adt7475_read(REG_CONFIG3);
1547         /* Pin PWM2 may alternatively be used for ALERT output */
1548         if (!(config3 & CONFIG3_SMBALERT))
1549                 data->has_pwm2 = 1;
1550         /* Meaning of this bit is inverted for the ADT7473-1 */
1551         if (id->driver_data == adt7473 && revision >= 1)
1552                 data->has_pwm2 = !data->has_pwm2;
1553
1554         data->config4 = adt7475_read(REG_CONFIG4);
1555         /* Pin TACH4 may alternatively be used for THERM */
1556         if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1557                 data->has_fan4 = 1;
1558
1559         /*
1560          * THERM configuration is more complex on the ADT7476 and ADT7490,
1561          * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1562          * this function
1563          */
1564         if (id->driver_data == adt7490) {
1565                 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1566                     !(config3 & CONFIG3_THERM))
1567                         data->has_fan4 = 1;
1568         }
1569         if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1570                 if (!(config3 & CONFIG3_THERM) ||
1571                     (data->config4 & CONFIG4_PINFUNC) == 0x1)
1572                         data->has_voltage |= (1 << 0);          /* in0 */
1573         }
1574
1575         /*
1576          * On the ADT7476, the +12V input pin may instead be used as VID5,
1577          * and VID pins may alternatively be used as GPIO
1578          */
1579         if (id->driver_data == adt7476) {
1580                 u8 vid = adt7475_read(REG_VID);
1581                 if (!(vid & VID_VIDSEL))
1582                         data->has_voltage |= (1 << 4);          /* in4 */
1583
1584                 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1585         }
1586
1587         /* Voltage attenuators can be bypassed, globally or individually */
1588         config2 = adt7475_read(REG_CONFIG2);
1589         if (config2 & CONFIG2_ATTN) {
1590                 data->bypass_attn = (0x3 << 3) | 0x3;
1591         } else {
1592                 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1593                                     ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1594         }
1595         data->bypass_attn &= data->has_voltage;
1596
1597         /*
1598          * Call adt7475_read_pwm for all pwm's as this will reprogram any
1599          * pwm's which are disabled to manual mode with 0% duty cycle
1600          */
1601         for (i = 0; i < ADT7475_PWM_COUNT; i++)
1602                 adt7475_read_pwm(client, i);
1603
1604         /* Start monitoring */
1605         switch (chip) {
1606         case adt7475:
1607         case adt7476:
1608                 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1609                                           adt7475_read(REG_CONFIG1) | 0x01);
1610                 break;
1611         default:
1612                 break;
1613         }
1614
1615         ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1616         if (ret)
1617                 return ret;
1618
1619         /* Features that can be disabled individually */
1620         if (data->has_fan4) {
1621                 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1622                 if (ret)
1623                         goto eremove;
1624         }
1625         if (data->has_pwm2) {
1626                 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1627                 if (ret)
1628                         goto eremove;
1629         }
1630         if (data->has_voltage & (1 << 0)) {
1631                 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1632                 if (ret)
1633                         goto eremove;
1634         }
1635         if (data->has_voltage & (1 << 3)) {
1636                 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1637                 if (ret)
1638                         goto eremove;
1639         }
1640         if (data->has_voltage & (1 << 4)) {
1641                 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1642                 if (ret)
1643                         goto eremove;
1644         }
1645         if (data->has_voltage & (1 << 5)) {
1646                 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1647                 if (ret)
1648                         goto eremove;
1649         }
1650         if (data->has_vid) {
1651                 data->vrm = vid_which_vrm();
1652                 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
1653                 if (ret)
1654                         goto eremove;
1655         }
1656
1657         data->hwmon_dev = hwmon_device_register(&client->dev);
1658         if (IS_ERR(data->hwmon_dev)) {
1659                 ret = PTR_ERR(data->hwmon_dev);
1660                 goto eremove;
1661         }
1662
1663         dev_info(&client->dev, "%s device, revision %d\n",
1664                  names[id->driver_data], revision);
1665         if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1666                 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1667                          (data->has_voltage & (1 << 0)) ? " in0" : "",
1668                          (data->has_voltage & (1 << 4)) ? " in4" : "",
1669                          data->has_fan4 ? " fan4" : "",
1670                          data->has_pwm2 ? " pwm2" : "",
1671                          data->has_vid ? " vid" : "");
1672         if (data->bypass_attn)
1673                 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1674                          (data->bypass_attn & (1 << 0)) ? " in0" : "",
1675                          (data->bypass_attn & (1 << 1)) ? " in1" : "",
1676                          (data->bypass_attn & (1 << 3)) ? " in3" : "",
1677                          (data->bypass_attn & (1 << 4)) ? " in4" : "");
1678
1679         /* Limits and settings, should never change update more than once */
1680         adt7475_update_limits(client);
1681
1682         return 0;
1683
1684 eremove:
1685         adt7475_remove_files(client, data);
1686         return ret;
1687 }
1688
1689 static int adt7475_remove(struct i2c_client *client)
1690 {
1691         struct adt7475_data *data = i2c_get_clientdata(client);
1692
1693         hwmon_device_unregister(data->hwmon_dev);
1694         adt7475_remove_files(client, data);
1695
1696         return 0;
1697 }
1698
1699 static struct i2c_driver adt7475_driver = {
1700         .class          = I2C_CLASS_HWMON,
1701         .driver = {
1702                 .name   = "adt7475",
1703                 .of_match_table = of_match_ptr(adt7475_of_match),
1704         },
1705         .probe          = adt7475_probe,
1706         .remove         = adt7475_remove,
1707         .id_table       = adt7475_id,
1708         .detect         = adt7475_detect,
1709         .address_list   = normal_i2c,
1710 };
1711
1712 static void adt7475_read_hystersis(struct i2c_client *client)
1713 {
1714         struct adt7475_data *data = i2c_get_clientdata(client);
1715
1716         data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1717         data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1718         data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1719 }
1720
1721 static void adt7475_read_pwm(struct i2c_client *client, int index)
1722 {
1723         struct adt7475_data *data = i2c_get_clientdata(client);
1724         unsigned int v;
1725
1726         data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1727
1728         /*
1729          * Figure out the internal value for pwmctrl and pwmchan
1730          * based on the current settings
1731          */
1732         v = (data->pwm[CONTROL][index] >> 5) & 7;
1733
1734         if (v == 3)
1735                 data->pwmctl[index] = 0;
1736         else if (v == 7)
1737                 data->pwmctl[index] = 1;
1738         else if (v == 4) {
1739                 /*
1740                  * The fan is disabled - we don't want to
1741                  * support that, so change to manual mode and
1742                  * set the duty cycle to 0 instead
1743                  */
1744                 data->pwm[INPUT][index] = 0;
1745                 data->pwm[CONTROL][index] &= ~0xE0;
1746                 data->pwm[CONTROL][index] |= (7 << 5);
1747
1748                 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1749                                           data->pwm[INPUT][index]);
1750
1751                 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1752                                           data->pwm[CONTROL][index]);
1753
1754                 data->pwmctl[index] = 1;
1755         } else {
1756                 data->pwmctl[index] = 2;
1757
1758                 switch (v) {
1759                 case 0:
1760                         data->pwmchan[index] = 1;
1761                         break;
1762                 case 1:
1763                         data->pwmchan[index] = 2;
1764                         break;
1765                 case 2:
1766                         data->pwmchan[index] = 4;
1767                         break;
1768                 case 5:
1769                         data->pwmchan[index] = 6;
1770                         break;
1771                 case 6:
1772                         data->pwmchan[index] = 7;
1773                         break;
1774                 }
1775         }
1776 }
1777
1778 static int adt7475_update_measure(struct device *dev)
1779 {
1780         struct i2c_client *client = to_i2c_client(dev);
1781         struct adt7475_data *data = i2c_get_clientdata(client);
1782         u16 ext;
1783         int i;
1784         int ret;
1785
1786         ret = adt7475_read(REG_STATUS2);
1787         if (ret < 0)
1788                 return ret;
1789         data->alarms = ret << 8;
1790
1791         ret = adt7475_read(REG_STATUS1);
1792         if (ret < 0)
1793                 return ret;
1794         data->alarms |= ret;
1795
1796         ret = adt7475_read(REG_EXTEND2);
1797         if (ret < 0)
1798                 return ret;
1799
1800         ext = (ret << 8);
1801
1802         ret = adt7475_read(REG_EXTEND1);
1803         if (ret < 0)
1804                 return ret;
1805
1806         ext |= ret;
1807
1808         for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1809                 if (!(data->has_voltage & (1 << i)))
1810                         continue;
1811                 ret = adt7475_read(VOLTAGE_REG(i));
1812                 if (ret < 0)
1813                         return ret;
1814                 data->voltage[INPUT][i] =
1815                         (ret << 2) |
1816                         ((ext >> (i * 2)) & 3);
1817         }
1818
1819         for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1820                 ret = adt7475_read(TEMP_REG(i));
1821                 if (ret < 0)
1822                         return ret;
1823                 data->temp[INPUT][i] =
1824                         (ret << 2) |
1825                         ((ext >> ((i + 5) * 2)) & 3);
1826         }
1827
1828         if (data->has_voltage & (1 << 5)) {
1829                 ret = adt7475_read(REG_STATUS4);
1830                 if (ret < 0)
1831                         return ret;
1832                 data->alarms |= ret << 24;
1833
1834                 ret = adt7475_read(REG_EXTEND3);
1835                 if (ret < 0)
1836                         return ret;
1837                 ext = ret;
1838
1839                 ret = adt7475_read(REG_VTT);
1840                 if (ret < 0)
1841                         return ret;
1842                 data->voltage[INPUT][5] = ret << 2 |
1843                         ((ext >> 4) & 3);
1844         }
1845
1846         for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1847                 if (i == 3 && !data->has_fan4)
1848                         continue;
1849                 ret = adt7475_read_word(client, TACH_REG(i));
1850                 if (ret < 0)
1851                         return ret;
1852                 data->tach[INPUT][i] = ret;
1853         }
1854
1855         /* Updated by hw when in auto mode */
1856         for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1857                 if (i == 1 && !data->has_pwm2)
1858                         continue;
1859                 ret = adt7475_read(PWM_REG(i));
1860                 if (ret < 0)
1861                         return ret;
1862                 data->pwm[INPUT][i] = ret;
1863         }
1864
1865         if (data->has_vid) {
1866                 ret = adt7475_read(REG_VID);
1867                 if (ret < 0)
1868                         return ret;
1869                 data->vid = ret & 0x3f;
1870         }
1871
1872         return 0;
1873 }
1874
1875 static struct adt7475_data *adt7475_update_device(struct device *dev)
1876 {
1877         struct i2c_client *client = to_i2c_client(dev);
1878         struct adt7475_data *data = i2c_get_clientdata(client);
1879
1880         mutex_lock(&data->lock);
1881
1882         /* Measurement values update every 2 seconds */
1883         if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1884             !data->valid) {
1885                 adt7475_update_measure(dev);
1886                 data->measure_updated = jiffies;
1887                 data->valid = true;
1888         }
1889
1890         mutex_unlock(&data->lock);
1891
1892         return data;
1893 }
1894
1895 module_i2c_driver(adt7475_driver);
1896
1897 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1898 MODULE_DESCRIPTION("adt7475 driver");
1899 MODULE_LICENSE("GPL");