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         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 int adt7475_read_word(struct i2c_client *client, int reg)
 306 {
 307         int val1, val2;
 308
 309         val1 = i2c_smbus_read_byte_data(client, reg);
 310         if (val1 < 0)
 311                 return val1;
 312         val2 = i2c_smbus_read_byte_data(client, reg + 1);
 313         if (val2 < 0)
 314                 return val2;
 315
 316         return val1 | (val2 << 8);
 317 }
 318
 319 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
 320 {
 321         i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
 322         i2c_smbus_write_byte_data(client, reg, val & 0xFF);
 323 }
 324
 325 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
 326                             char *buf)
 327 {
 328         struct adt7475_data *data = adt7475_update_device(dev);
 329         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 330         unsigned short val;
 331
 332         if (IS_ERR(data))
 333                 return PTR_ERR(data);
 334
 335         switch (sattr->nr) {
 336         case ALARM:
 337                 return sprintf(buf, "%d\n",
 338                                (data->alarms >> sattr->index) & 1);
 339         default:
 340                 val = data->voltage[sattr->nr][sattr->index];
 341                 return sprintf(buf, "%d\n",
 342                                reg2volt(sattr->index, val, data->bypass_attn));
 343         }
 344 }
 345
 346 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
 347                            const char *buf, size_t count)
 348 {
 349
 350         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 351         struct i2c_client *client = to_i2c_client(dev);
 352         struct adt7475_data *data = i2c_get_clientdata(client);
 353         unsigned char reg;
 354         long val;
 355
 356         if (kstrtol(buf, 10, &val))
 357                 return -EINVAL;
 358
 359         mutex_lock(&data->lock);
 360
 361         data->voltage[sattr->nr][sattr->index] =
 362                                 volt2reg(sattr->index, val, data->bypass_attn);
 363
 364         if (sattr->index < ADT7475_VOLTAGE_COUNT) {
 365                 if (sattr->nr == MIN)
 366                         reg = VOLTAGE_MIN_REG(sattr->index);
 367                 else
 368                         reg = VOLTAGE_MAX_REG(sattr->index);
 369         } else {
 370                 if (sattr->nr == MIN)
 371                         reg = REG_VTT_MIN;
 372                 else
 373                         reg = REG_VTT_MAX;
 374         }
 375
 376         i2c_smbus_write_byte_data(client, reg,
 377                                   data->voltage[sattr->nr][sattr->index] >> 2);
 378         mutex_unlock(&data->lock);
 379
 380         return count;
 381 }
 382
 383 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 384                          char *buf)
 385 {
 386         struct adt7475_data *data = adt7475_update_device(dev);
 387         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 388         int out;
 389
 390         if (IS_ERR(data))
 391                 return PTR_ERR(data);
 392
 393         switch (sattr->nr) {
 394         case HYSTERSIS:
 395                 mutex_lock(&data->lock);
 396                 out = data->temp[sattr->nr][sattr->index];
 397                 if (sattr->index != 1)
 398                         out = (out >> 4) & 0xF;
 399                 else
 400                         out = (out & 0xF);
 401                 /*
 402                  * Show the value as an absolute number tied to
 403                  * THERM
 404                  */
 405                 out = reg2temp(data, data->temp[THERM][sattr->index]) -
 406                         out * 1000;
 407                 mutex_unlock(&data->lock);
 408                 break;
 409
 410         case OFFSET:
 411                 /*
 412                  * Offset is always 2's complement, regardless of the
 413                  * setting in CONFIG5
 414                  */
 415                 mutex_lock(&data->lock);
 416                 out = (s8)data->temp[sattr->nr][sattr->index];
 417                 if (data->config5 & CONFIG5_TEMPOFFSET)
 418                         out *= 1000;
 419                 else
 420                         out *= 500;
 421                 mutex_unlock(&data->lock);
 422                 break;
 423
 424         case ALARM:
 425                 out = (data->alarms >> (sattr->index + 4)) & 1;
 426                 break;
 427
 428         case FAULT:
 429                 /* Note - only for remote1 and remote2 */
 430                 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
 431                 break;
 432
 433         default:
 434                 /* All other temp values are in the configured format */
 435                 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
 436         }
 437
 438         return sprintf(buf, "%d\n", out);
 439 }
 440
 441 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 442                         const char *buf, size_t count)
 443 {
 444         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 445         struct i2c_client *client = to_i2c_client(dev);
 446         struct adt7475_data *data = i2c_get_clientdata(client);
 447         unsigned char reg = 0;
 448         u8 out;
 449         int temp;
 450         long val;
 451
 452         if (kstrtol(buf, 10, &val))
 453                 return -EINVAL;
 454
 455         mutex_lock(&data->lock);
 456
 457         /* We need the config register in all cases for temp <-> reg conv. */
 458         data->config5 = adt7475_read(REG_CONFIG5);
 459
 460         switch (sattr->nr) {
 461         case OFFSET:
 462                 if (data->config5 & CONFIG5_TEMPOFFSET) {
 463                         val = clamp_val(val, -63000, 127000);
 464                         out = data->temp[OFFSET][sattr->index] = val / 1000;
 465                 } else {
 466                         val = clamp_val(val, -63000, 64000);
 467                         out = data->temp[OFFSET][sattr->index] = val / 500;
 468                 }
 469                 break;
 470
 471         case HYSTERSIS:
 472                 /*
 473                  * The value will be given as an absolute value, turn it
 474                  * into an offset based on THERM
 475                  */
 476
 477                 /* Read fresh THERM and HYSTERSIS values from the chip */
 478                 data->temp[THERM][sattr->index] =
 479                         adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
 480                 adt7475_read_hystersis(client);
 481
 482                 temp = reg2temp(data, data->temp[THERM][sattr->index]);
 483                 val = clamp_val(val, temp - 15000, temp);
 484                 val = (temp - val) / 1000;
 485
 486                 if (sattr->index != 1) {
 487                         data->temp[HYSTERSIS][sattr->index] &= 0xF0;
 488                         data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
 489                 } else {
 490                         data->temp[HYSTERSIS][sattr->index] &= 0x0F;
 491                         data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
 492                 }
 493
 494                 out = data->temp[HYSTERSIS][sattr->index];
 495                 break;
 496
 497         default:
 498                 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
 499
 500                 /*
 501                  * We maintain an extra 2 digits of precision for simplicity
 502                  * - shift those back off before writing the value
 503                  */
 504                 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
 505         }
 506
 507         switch (sattr->nr) {
 508         case MIN:
 509                 reg = TEMP_MIN_REG(sattr->index);
 510                 break;
 511         case MAX:
 512                 reg = TEMP_MAX_REG(sattr->index);
 513                 break;
 514         case OFFSET:
 515                 reg = TEMP_OFFSET_REG(sattr->index);
 516                 break;
 517         case AUTOMIN:
 518                 reg = TEMP_TMIN_REG(sattr->index);
 519                 break;
 520         case THERM:
 521                 reg = TEMP_THERM_REG(sattr->index);
 522                 break;
 523         case HYSTERSIS:
 524                 if (sattr->index != 2)
 525                         reg = REG_REMOTE1_HYSTERSIS;
 526                 else
 527                         reg = REG_REMOTE2_HYSTERSIS;
 528
 529                 break;
 530         }
 531
 532         i2c_smbus_write_byte_data(client, reg, out);
 533
 534         mutex_unlock(&data->lock);
 535         return count;
 536 }
 537
 538 /* Assuming CONFIG6[SLOW] is 0 */
 539 static const int ad7475_st_map[] = {
 540         37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
 541 };
 542
 543 static ssize_t show_temp_st(struct device *dev, struct device_attribute *attr,
 544                                   char *buf)
 545 {
 546         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 547         struct i2c_client *client = to_i2c_client(dev);
 548         struct adt7475_data *data = i2c_get_clientdata(client);
 549         long val;
 550
 551         switch (sattr->index) {
 552         case 0:
 553                 val = data->enh_acoustics[0] & 0xf;
 554                 break;
 555         case 1:
 556                 val = (data->enh_acoustics[1] >> 4) & 0xf;
 557                 break;
 558         case 2:
 559         default:
 560                 val = data->enh_acoustics[1] & 0xf;
 561                 break;
 562         }
 563
 564         if (val & 0x8)
 565                 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
 566         else
 567                 return sprintf(buf, "0\n");
 568 }
 569
 570 static ssize_t set_temp_st(struct device *dev, struct device_attribute *attr,
 571                                  const char *buf, size_t count)
 572 {
 573         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 574         struct i2c_client *client = to_i2c_client(dev);
 575         struct adt7475_data *data = i2c_get_clientdata(client);
 576         unsigned char reg;
 577         int shift, idx;
 578         ulong val;
 579
 580         if (kstrtoul(buf, 10, &val))
 581                 return -EINVAL;
 582
 583         switch (sattr->index) {
 584         case 0:
 585                 reg = REG_ENHANCE_ACOUSTICS1;
 586                 shift = 0;
 587                 idx = 0;
 588                 break;
 589         case 1:
 590                 reg = REG_ENHANCE_ACOUSTICS2;
 591                 shift = 0;
 592                 idx = 1;
 593                 break;
 594         case 2:
 595         default:
 596                 reg = REG_ENHANCE_ACOUSTICS2;
 597                 shift = 4;
 598                 idx = 1;
 599                 break;
 600         }
 601
 602         if (val > 0) {
 603                 val = find_closest_descending(val, ad7475_st_map,
 604                                               ARRAY_SIZE(ad7475_st_map));
 605                 val |= 0x8;
 606         }
 607
 608         mutex_lock(&data->lock);
 609
 610         data->enh_acoustics[idx] &= ~(0xf << shift);
 611         data->enh_acoustics[idx] |= (val << shift);
 612
 613         i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
 614
 615         mutex_unlock(&data->lock);
 616
 617         return count;
 618 }
 619
 620 /*
 621  * Table of autorange values - the user will write the value in millidegrees,
 622  * and we'll convert it
 623  */
 624 static const int autorange_table[] = {
 625         2000, 2500, 3330, 4000, 5000, 6670, 8000,
 626         10000, 13330, 16000, 20000, 26670, 32000, 40000,
 627         53330, 80000
 628 };
 629
 630 static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
 631                            char *buf)
 632 {
 633         struct adt7475_data *data = adt7475_update_device(dev);
 634         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 635         int out, val;
 636
 637         if (IS_ERR(data))
 638                 return PTR_ERR(data);
 639
 640         mutex_lock(&data->lock);
 641         out = (data->range[sattr->index] >> 4) & 0x0F;
 642         val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
 643         mutex_unlock(&data->lock);
 644
 645         return sprintf(buf, "%d\n", val + autorange_table[out]);
 646 }
 647
 648 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
 649                           const char *buf, size_t count)
 650 {
 651         struct i2c_client *client = to_i2c_client(dev);
 652         struct adt7475_data *data = i2c_get_clientdata(client);
 653         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 654         int temp;
 655         long val;
 656
 657         if (kstrtol(buf, 10, &val))
 658                 return -EINVAL;
 659
 660         mutex_lock(&data->lock);
 661
 662         /* Get a fresh copy of the needed registers */
 663         data->config5 = adt7475_read(REG_CONFIG5);
 664         data->temp[AUTOMIN][sattr->index] =
 665                 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
 666         data->range[sattr->index] =
 667                 adt7475_read(TEMP_TRANGE_REG(sattr->index));
 668
 669         /*
 670          * The user will write an absolute value, so subtract the start point
 671          * to figure the range
 672          */
 673         temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
 674         val = clamp_val(val, temp + autorange_table[0],
 675                 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
 676         val -= temp;
 677
 678         /* Find the nearest table entry to what the user wrote */
 679         val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
 680
 681         data->range[sattr->index] &= ~0xF0;
 682         data->range[sattr->index] |= val << 4;
 683
 684         i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
 685                                   data->range[sattr->index]);
 686
 687         mutex_unlock(&data->lock);
 688         return count;
 689 }
 690
 691 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
 692                          char *buf)
 693 {
 694         struct adt7475_data *data = adt7475_update_device(dev);
 695         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 696         int out;
 697
 698         if (IS_ERR(data))
 699                 return PTR_ERR(data);
 700
 701         if (sattr->nr == ALARM)
 702                 out = (data->alarms >> (sattr->index + 10)) & 1;
 703         else
 704                 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
 705
 706         return sprintf(buf, "%d\n", out);
 707 }
 708
 709 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
 710                         const char *buf, size_t count)
 711 {
 712
 713         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 714         struct i2c_client *client = to_i2c_client(dev);
 715         struct adt7475_data *data = i2c_get_clientdata(client);
 716         unsigned long val;
 717
 718         if (kstrtoul(buf, 10, &val))
 719                 return -EINVAL;
 720
 721         mutex_lock(&data->lock);
 722
 723         data->tach[MIN][sattr->index] = rpm2tach(val);
 724
 725         adt7475_write_word(client, TACH_MIN_REG(sattr->index),
 726                            data->tach[MIN][sattr->index]);
 727
 728         mutex_unlock(&data->lock);
 729         return count;
 730 }
 731
 732 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 733                         char *buf)
 734 {
 735         struct adt7475_data *data = adt7475_update_device(dev);
 736         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 737
 738         if (IS_ERR(data))
 739                 return PTR_ERR(data);
 740
 741         return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
 742 }
 743
 744 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
 745                             char *buf)
 746 {
 747         struct adt7475_data *data = adt7475_update_device(dev);
 748         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 749
 750         if (IS_ERR(data))
 751                 return PTR_ERR(data);
 752
 753         return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
 754 }
 755
 756 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
 757                             char *buf)
 758 {
 759         struct adt7475_data *data = adt7475_update_device(dev);
 760         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 761
 762         if (IS_ERR(data))
 763                 return PTR_ERR(data);
 764
 765         return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
 766 }
 767
 768 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 769                        const char *buf, size_t count)
 770 {
 771
 772         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 773         struct i2c_client *client = to_i2c_client(dev);
 774         struct adt7475_data *data = i2c_get_clientdata(client);
 775         unsigned char reg = 0;
 776         long val;
 777
 778         if (kstrtol(buf, 10, &val))
 779                 return -EINVAL;
 780
 781         mutex_lock(&data->lock);
 782
 783         switch (sattr->nr) {
 784         case INPUT:
 785                 /* Get a fresh value for CONTROL */
 786                 data->pwm[CONTROL][sattr->index] =
 787                         adt7475_read(PWM_CONFIG_REG(sattr->index));
 788
 789                 /*
 790                  * If we are not in manual mode, then we shouldn't allow
 791                  * the user to set the pwm speed
 792                  */
 793                 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
 794                         mutex_unlock(&data->lock);
 795                         return count;
 796                 }
 797
 798                 reg = PWM_REG(sattr->index);
 799                 break;
 800
 801         case MIN:
 802                 reg = PWM_MIN_REG(sattr->index);
 803                 break;
 804
 805         case MAX:
 806                 reg = PWM_MAX_REG(sattr->index);
 807                 break;
 808         }
 809
 810         data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
 811         i2c_smbus_write_byte_data(client, reg,
 812                                   data->pwm[sattr->nr][sattr->index]);
 813         mutex_unlock(&data->lock);
 814
 815         return count;
 816 }
 817
 818 static ssize_t show_stall_disable(struct device *dev,
 819                                   struct device_attribute *attr, char *buf)
 820 {
 821         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 822         struct i2c_client *client = to_i2c_client(dev);
 823         struct adt7475_data *data = i2c_get_clientdata(client);
 824         u8 mask = BIT(5 + sattr->index);
 825
 826         return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
 827 }
 828
 829 static ssize_t set_stall_disable(struct device *dev,
 830                                  struct device_attribute *attr, const char *buf,
 831                                  size_t count)
 832 {
 833         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 834         struct i2c_client *client = to_i2c_client(dev);
 835         struct adt7475_data *data = i2c_get_clientdata(client);
 836         long val;
 837         u8 mask = BIT(5 + sattr->index);
 838
 839         if (kstrtol(buf, 10, &val))
 840                 return -EINVAL;
 841
 842         mutex_lock(&data->lock);
 843
 844         data->enh_acoustics[0] &= ~mask;
 845         if (val)
 846                 data->enh_acoustics[0] |= mask;
 847
 848         i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
 849                                   data->enh_acoustics[0]);
 850
 851         mutex_unlock(&data->lock);
 852
 853         return count;
 854 }
 855
 856 /* Called by set_pwmctrl and set_pwmchan */
 857
 858 static int hw_set_pwm(struct i2c_client *client, int index,
 859                       unsigned int pwmctl, unsigned int pwmchan)
 860 {
 861         struct adt7475_data *data = i2c_get_clientdata(client);
 862         long val = 0;
 863
 864         switch (pwmctl) {
 865         case 0:
 866                 val = 0x03;     /* Run at full speed */
 867                 break;
 868         case 1:
 869                 val = 0x07;     /* Manual mode */
 870                 break;
 871         case 2:
 872                 switch (pwmchan) {
 873                 case 1:
 874                         /* Remote1 controls PWM */
 875                         val = 0x00;
 876                         break;
 877                 case 2:
 878                         /* local controls PWM */
 879                         val = 0x01;
 880                         break;
 881                 case 4:
 882                         /* remote2 controls PWM */
 883                         val = 0x02;
 884                         break;
 885                 case 6:
 886                         /* local/remote2 control PWM */
 887                         val = 0x05;
 888                         break;
 889                 case 7:
 890                         /* All three control PWM */
 891                         val = 0x06;
 892                         break;
 893                 default:
 894                         return -EINVAL;
 895                 }
 896                 break;
 897         default:
 898                 return -EINVAL;
 899         }
 900
 901         data->pwmctl[index] = pwmctl;
 902         data->pwmchan[index] = pwmchan;
 903
 904         data->pwm[CONTROL][index] &= ~0xE0;
 905         data->pwm[CONTROL][index] |= (val & 7) << 5;
 906
 907         i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
 908                                   data->pwm[CONTROL][index]);
 909
 910         return 0;
 911 }
 912
 913 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
 914                            const char *buf, size_t count)
 915 {
 916         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 917         struct i2c_client *client = to_i2c_client(dev);
 918         struct adt7475_data *data = i2c_get_clientdata(client);
 919         int r;
 920         long val;
 921
 922         if (kstrtol(buf, 10, &val))
 923                 return -EINVAL;
 924
 925         mutex_lock(&data->lock);
 926         /* Read Modify Write PWM values */
 927         adt7475_read_pwm(client, sattr->index);
 928         r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
 929         if (r)
 930                 count = r;
 931         mutex_unlock(&data->lock);
 932
 933         return count;
 934 }
 935
 936 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
 937                            const char *buf, size_t count)
 938 {
 939         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 940         struct i2c_client *client = to_i2c_client(dev);
 941         struct adt7475_data *data = i2c_get_clientdata(client);
 942         int r;
 943         long val;
 944
 945         if (kstrtol(buf, 10, &val))
 946                 return -EINVAL;
 947
 948         mutex_lock(&data->lock);
 949         /* Read Modify Write PWM values */
 950         adt7475_read_pwm(client, sattr->index);
 951         r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
 952         if (r)
 953                 count = r;
 954         mutex_unlock(&data->lock);
 955
 956         return count;
 957 }
 958
 959 /* List of frequencies for the PWM */
 960 static const int pwmfreq_table[] = {
 961         11, 14, 22, 29, 35, 44, 58, 88, 22500
 962 };
 963
 964 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
 965                             char *buf)
 966 {
 967         struct adt7475_data *data = adt7475_update_device(dev);
 968         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 969         int idx;
 970
 971         if (IS_ERR(data))
 972                 return PTR_ERR(data);
 973         idx = clamp_val(data->range[sattr->index] & 0xf, 0,
 974                         ARRAY_SIZE(pwmfreq_table) - 1);
 975
 976         return sprintf(buf, "%d\n", pwmfreq_table[idx]);
 977 }
 978
 979 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
 980                            const char *buf, size_t count)
 981 {
 982         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 983         struct i2c_client *client = to_i2c_client(dev);
 984         struct adt7475_data *data = i2c_get_clientdata(client);
 985         int out;
 986         long val;
 987
 988         if (kstrtol(buf, 10, &val))
 989                 return -EINVAL;
 990
 991         out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
 992
 993         mutex_lock(&data->lock);
 994
 995         data->range[sattr->index] =
 996                 adt7475_read(TEMP_TRANGE_REG(sattr->index));
 997         data->range[sattr->index] &= ~0xf;
 998         data->range[sattr->index] |= out;
 999
1000         i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1001                                   data->range[sattr->index]);
1002
1003         mutex_unlock(&data->lock);
1004         return count;
1005 }
1006
1007 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1008                                         struct device_attribute *devattr,
1009                                         char *buf)
1010 {
1011         struct adt7475_data *data = adt7475_update_device(dev);
1012
1013         if (IS_ERR(data))
1014                 return PTR_ERR(data);
1015
1016         return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1017 }
1018
1019 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1020                                         struct device_attribute *devattr,
1021                                         const char *buf, size_t count)
1022 {
1023         struct i2c_client *client = to_i2c_client(dev);
1024         struct adt7475_data *data = i2c_get_clientdata(client);
1025         long val;
1026
1027         if (kstrtol(buf, 10, &val))
1028                 return -EINVAL;
1029         if (val != 0 && val != 1)
1030                 return -EINVAL;
1031
1032         mutex_lock(&data->lock);
1033         data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1034         if (val)
1035                 data->config4 |= CONFIG4_MAXDUTY;
1036         else
1037                 data->config4 &= ~CONFIG4_MAXDUTY;
1038         i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1039         mutex_unlock(&data->lock);
1040
1041         return count;
1042 }
1043
1044 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1045                         char *buf)
1046 {
1047         struct adt7475_data *data = dev_get_drvdata(dev);
1048         return sprintf(buf, "%d\n", (int)data->vrm);
1049 }
1050
1051 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1052                          const char *buf, size_t count)
1053 {
1054         struct adt7475_data *data = dev_get_drvdata(dev);
1055         long val;
1056
1057         if (kstrtol(buf, 10, &val))
1058                 return -EINVAL;
1059         if (val < 0 || val > 255)
1060                 return -EINVAL;
1061         data->vrm = val;
1062
1063         return count;
1064 }
1065
1066 static ssize_t cpu0_vid_show(struct device *dev,
1067                              struct device_attribute *devattr, char *buf)
1068 {
1069         struct adt7475_data *data = adt7475_update_device(dev);
1070
1071         if (IS_ERR(data))
1072                 return PTR_ERR(data);
1073
1074         return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1075 }
1076
1077 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
1078 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
1079                             set_voltage, MAX, 0);
1080 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
1081                             set_voltage, MIN, 0);
1082 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
1083 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
1084 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
1085                             set_voltage, MAX, 1);
1086 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
1087                             set_voltage, MIN, 1);
1088 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
1089 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
1090 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
1091                             set_voltage, MAX, 2);
1092 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
1093                             set_voltage, MIN, 2);
1094 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
1095 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
1096 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
1097                             set_voltage, MAX, 3);
1098 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
1099                             set_voltage, MIN, 3);
1100 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
1101 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
1102 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
1103                             set_voltage, MAX, 4);
1104 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
1105                             set_voltage, MIN, 4);
1106 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
1107 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
1108 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
1109                             set_voltage, MAX, 5);
1110 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
1111                             set_voltage, MIN, 5);
1112 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
1113 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
1114 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
1115 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
1116 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1117                             MAX, 0);
1118 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1119                             MIN, 0);
1120 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
1121                             set_temp, OFFSET, 0);
1122 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
1123                             show_temp, set_temp, AUTOMIN, 0);
1124 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
1125                             show_point2, set_point2, 0, 0);
1126 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1127                             THERM, 0);
1128 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1129                             set_temp, HYSTERSIS, 0);
1130 static SENSOR_DEVICE_ATTR_2(temp1_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1131                             set_temp_st, 0, 0);
1132 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
1133 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
1134 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1135                             MAX, 1);
1136 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1137                             MIN, 1);
1138 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1139                             set_temp, OFFSET, 1);
1140 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
1141                             show_temp, set_temp, AUTOMIN, 1);
1142 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
1143                             show_point2, set_point2, 0, 1);
1144 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1145                             THERM, 1);
1146 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1147                             set_temp, HYSTERSIS, 1);
1148 static SENSOR_DEVICE_ATTR_2(temp2_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1149                             set_temp_st, 0, 1);
1150 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
1151 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
1152 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
1153 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1154                             MAX, 2);
1155 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1156                             MIN, 2);
1157 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1158                             set_temp, OFFSET, 2);
1159 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
1160                             show_temp, set_temp, AUTOMIN, 2);
1161 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
1162                             show_point2, set_point2, 0, 2);
1163 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1164                             THERM, 2);
1165 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1166                             set_temp, HYSTERSIS, 2);
1167 static SENSOR_DEVICE_ATTR_2(temp3_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1168                             set_temp_st, 0, 2);
1169 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
1170 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1171                             MIN, 0);
1172 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
1173 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
1174 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1175                             MIN, 1);
1176 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
1177 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
1178 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1179                             MIN, 2);
1180 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
1181 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
1182 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1183                             MIN, 3);
1184 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
1185 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1186                             0);
1187 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1188                             set_pwmfreq, INPUT, 0);
1189 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1190                             set_pwmctrl, INPUT, 0);
1191 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1192                             show_pwmchan, set_pwmchan, INPUT, 0);
1193 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1194                             set_pwm, MIN, 0);
1195 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1196                             set_pwm, MAX, 0);
1197 static SENSOR_DEVICE_ATTR_2(pwm1_stall_disable, S_IRUGO | S_IWUSR,
1198                             show_stall_disable, set_stall_disable, 0, 0);
1199 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1200                             1);
1201 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1202                             set_pwmfreq, INPUT, 1);
1203 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1204                             set_pwmctrl, INPUT, 1);
1205 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1206                             show_pwmchan, set_pwmchan, INPUT, 1);
1207 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1208                             set_pwm, MIN, 1);
1209 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1210                             set_pwm, MAX, 1);
1211 static SENSOR_DEVICE_ATTR_2(pwm2_stall_disable, S_IRUGO | S_IWUSR,
1212                             show_stall_disable, set_stall_disable, 0, 1);
1213 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1214                             2);
1215 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1216                             set_pwmfreq, INPUT, 2);
1217 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1218                             set_pwmctrl, INPUT, 2);
1219 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1220                             show_pwmchan, set_pwmchan, INPUT, 2);
1221 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1222                             set_pwm, MIN, 2);
1223 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1224                             set_pwm, MAX, 2);
1225 static SENSOR_DEVICE_ATTR_2(pwm3_stall_disable, S_IRUGO | S_IWUSR,
1226                             show_stall_disable, set_stall_disable, 0, 2);
1227
1228 /* Non-standard name, might need revisiting */
1229 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1230
1231 static DEVICE_ATTR_RW(vrm);
1232 static DEVICE_ATTR_RO(cpu0_vid);
1233
1234 static struct attribute *adt7475_attrs[] = {
1235         &sensor_dev_attr_in1_input.dev_attr.attr,
1236         &sensor_dev_attr_in1_max.dev_attr.attr,
1237         &sensor_dev_attr_in1_min.dev_attr.attr,
1238         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1239         &sensor_dev_attr_in2_input.dev_attr.attr,
1240         &sensor_dev_attr_in2_max.dev_attr.attr,
1241         &sensor_dev_attr_in2_min.dev_attr.attr,
1242         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1243         &sensor_dev_attr_temp1_input.dev_attr.attr,
1244         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1245         &sensor_dev_attr_temp1_fault.dev_attr.attr,
1246         &sensor_dev_attr_temp1_max.dev_attr.attr,
1247         &sensor_dev_attr_temp1_min.dev_attr.attr,
1248         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1249         &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1250         &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1251         &sensor_dev_attr_temp1_crit.dev_attr.attr,
1252         &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1253         &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1254         &sensor_dev_attr_temp2_input.dev_attr.attr,
1255         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1256         &sensor_dev_attr_temp2_max.dev_attr.attr,
1257         &sensor_dev_attr_temp2_min.dev_attr.attr,
1258         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1259         &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1260         &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1261         &sensor_dev_attr_temp2_crit.dev_attr.attr,
1262         &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1263         &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1264         &sensor_dev_attr_temp3_input.dev_attr.attr,
1265         &sensor_dev_attr_temp3_fault.dev_attr.attr,
1266         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1267         &sensor_dev_attr_temp3_max.dev_attr.attr,
1268         &sensor_dev_attr_temp3_min.dev_attr.attr,
1269         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1270         &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1271         &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1272         &sensor_dev_attr_temp3_crit.dev_attr.attr,
1273         &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1274         &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1275         &sensor_dev_attr_fan1_input.dev_attr.attr,
1276         &sensor_dev_attr_fan1_min.dev_attr.attr,
1277         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1278         &sensor_dev_attr_fan2_input.dev_attr.attr,
1279         &sensor_dev_attr_fan2_min.dev_attr.attr,
1280         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1281         &sensor_dev_attr_fan3_input.dev_attr.attr,
1282         &sensor_dev_attr_fan3_min.dev_attr.attr,
1283         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1284         &sensor_dev_attr_pwm1.dev_attr.attr,
1285         &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1286         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1287         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1288         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1289         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1290         &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1291         &sensor_dev_attr_pwm3.dev_attr.attr,
1292         &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1293         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1294         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1295         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1296         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1297         &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1298         &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1299         NULL,
1300 };
1301
1302 static struct attribute *fan4_attrs[] = {
1303         &sensor_dev_attr_fan4_input.dev_attr.attr,
1304         &sensor_dev_attr_fan4_min.dev_attr.attr,
1305         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1306         NULL
1307 };
1308
1309 static struct attribute *pwm2_attrs[] = {
1310         &sensor_dev_attr_pwm2.dev_attr.attr,
1311         &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1312         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1313         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1314         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1315         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1316         &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1317         NULL
1318 };
1319
1320 static struct attribute *in0_attrs[] = {
1321         &sensor_dev_attr_in0_input.dev_attr.attr,
1322         &sensor_dev_attr_in0_max.dev_attr.attr,
1323         &sensor_dev_attr_in0_min.dev_attr.attr,
1324         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1325         NULL
1326 };
1327
1328 static struct attribute *in3_attrs[] = {
1329         &sensor_dev_attr_in3_input.dev_attr.attr,
1330         &sensor_dev_attr_in3_max.dev_attr.attr,
1331         &sensor_dev_attr_in3_min.dev_attr.attr,
1332         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1333         NULL
1334 };
1335
1336 static struct attribute *in4_attrs[] = {
1337         &sensor_dev_attr_in4_input.dev_attr.attr,
1338         &sensor_dev_attr_in4_max.dev_attr.attr,
1339         &sensor_dev_attr_in4_min.dev_attr.attr,
1340         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1341         NULL
1342 };
1343
1344 static struct attribute *in5_attrs[] = {
1345         &sensor_dev_attr_in5_input.dev_attr.attr,
1346         &sensor_dev_attr_in5_max.dev_attr.attr,
1347         &sensor_dev_attr_in5_min.dev_attr.attr,
1348         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1349         NULL
1350 };
1351
1352 static struct attribute *vid_attrs[] = {
1353         &dev_attr_cpu0_vid.attr,
1354         &dev_attr_vrm.attr,
1355         NULL
1356 };
1357
1358 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1359 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1360 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1361 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1362 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1363 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1364 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1365 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1366
1367 static int adt7475_detect(struct i2c_client *client,
1368                           struct i2c_board_info *info)
1369 {
1370         struct i2c_adapter *adapter = client->adapter;
1371         int vendid, devid, devid2;
1372         const char *name;
1373
1374         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1375                 return -ENODEV;
1376
1377         vendid = adt7475_read(REG_VENDID);
1378         devid2 = adt7475_read(REG_DEVID2);
1379         if (vendid != 0x41 ||           /* Analog Devices */
1380             (devid2 & 0xf8) != 0x68)
1381                 return -ENODEV;
1382
1383         devid = adt7475_read(REG_DEVID);
1384         if (devid == 0x73)
1385                 name = "adt7473";
1386         else if (devid == 0x75 && client->addr == 0x2e)
1387                 name = "adt7475";
1388         else if (devid == 0x76)
1389                 name = "adt7476";
1390         else if ((devid2 & 0xfc) == 0x6c)
1391                 name = "adt7490";
1392         else {
1393                 dev_dbg(&adapter->dev,
1394                         "Couldn't detect an ADT7473/75/76/90 part at "
1395                         "0x%02x\n", (unsigned int)client->addr);
1396                 return -ENODEV;
1397         }
1398
1399         strlcpy(info->type, name, I2C_NAME_SIZE);
1400
1401         return 0;
1402 }
1403
1404 static void adt7475_remove_files(struct i2c_client *client,
1405                                  struct adt7475_data *data)
1406 {
1407         sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1408         if (data->has_fan4)
1409                 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1410         if (data->has_pwm2)
1411                 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1412         if (data->has_voltage & (1 << 0))
1413                 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1414         if (data->has_voltage & (1 << 3))
1415                 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1416         if (data->has_voltage & (1 << 4))
1417                 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1418         if (data->has_voltage & (1 << 5))
1419                 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1420         if (data->has_vid)
1421                 sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
1422 }
1423
1424 static int adt7475_update_limits(struct i2c_client *client)
1425 {
1426         struct adt7475_data *data = i2c_get_clientdata(client);
1427         int i;
1428         int ret;
1429
1430         ret = adt7475_read(REG_CONFIG4);
1431         if (ret < 0)
1432                 return ret;
1433         data->config4 = ret;
1434
1435         ret = adt7475_read(REG_CONFIG5);
1436         if (ret < 0)
1437                 return ret;
1438         data->config5 = ret;
1439
1440         for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1441                 if (!(data->has_voltage & (1 << i)))
1442                         continue;
1443                 /* Adjust values so they match the input precision */
1444                 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1445                 if (ret < 0)
1446                         return ret;
1447                 data->voltage[MIN][i] = ret << 2;
1448
1449                 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1450                 if (ret < 0)
1451                         return ret;
1452                 data->voltage[MAX][i] = ret << 2;
1453         }
1454
1455         if (data->has_voltage & (1 << 5)) {
1456                 ret = adt7475_read(REG_VTT_MIN);
1457                 if (ret < 0)
1458                         return ret;
1459                 data->voltage[MIN][5] = ret << 2;
1460
1461                 ret = adt7475_read(REG_VTT_MAX);
1462                 if (ret < 0)
1463                         return ret;
1464                 data->voltage[MAX][5] = ret << 2;
1465         }
1466
1467         for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1468                 /* Adjust values so they match the input precision */
1469                 ret = adt7475_read(TEMP_MIN_REG(i));
1470                 if (ret < 0)
1471                         return ret;
1472                 data->temp[MIN][i] = ret << 2;
1473
1474                 ret = adt7475_read(TEMP_MAX_REG(i));
1475                 if (ret < 0)
1476                         return ret;
1477                 data->temp[MAX][i] = ret << 2;
1478
1479                 ret = adt7475_read(TEMP_TMIN_REG(i));
1480                 if (ret < 0)
1481                         return ret;
1482                 data->temp[AUTOMIN][i] = ret << 2;
1483
1484                 ret = adt7475_read(TEMP_THERM_REG(i));
1485                 if (ret < 0)
1486                         return ret;
1487                 data->temp[THERM][i] = ret << 2;
1488
1489                 ret = adt7475_read(TEMP_OFFSET_REG(i));
1490                 if (ret < 0)
1491                         return ret;
1492                 data->temp[OFFSET][i] = ret;
1493         }
1494         adt7475_read_hystersis(client);
1495
1496         for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1497                 if (i == 3 && !data->has_fan4)
1498                         continue;
1499                 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1500                 if (ret < 0)
1501                         return ret;
1502                 data->tach[MIN][i] = ret;
1503         }
1504
1505         for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1506                 if (i == 1 && !data->has_pwm2)
1507                         continue;
1508                 ret = adt7475_read(PWM_MAX_REG(i));
1509                 if (ret < 0)
1510                         return ret;
1511                 data->pwm[MAX][i] = ret;
1512
1513                 ret = adt7475_read(PWM_MIN_REG(i));
1514                 if (ret < 0)
1515                         return ret;
1516                 data->pwm[MIN][i] = ret;
1517                 /* Set the channel and control information */
1518                 adt7475_read_pwm(client, i);
1519         }
1520
1521         ret = adt7475_read(TEMP_TRANGE_REG(0));
1522         if (ret < 0)
1523                 return ret;
1524         data->range[0] = ret;
1525
1526         ret = adt7475_read(TEMP_TRANGE_REG(1));
1527         if (ret < 0)
1528                 return ret;
1529         data->range[1] = ret;
1530
1531         ret = adt7475_read(TEMP_TRANGE_REG(2));
1532         if (ret < 0)
1533                 return ret;
1534         data->range[2] = ret;
1535
1536         return 0;
1537 }
1538
1539 static int adt7475_probe(struct i2c_client *client,
1540                          const struct i2c_device_id *id)
1541 {
1542         enum chips chip;
1543         static const char * const names[] = {
1544                 [adt7473] = "ADT7473",
1545                 [adt7475] = "ADT7475",
1546                 [adt7476] = "ADT7476",
1547                 [adt7490] = "ADT7490",
1548         };
1549
1550         struct adt7475_data *data;
1551         int i, ret = 0, revision;
1552         u8 config2, config3;
1553
1554         data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1555         if (data == NULL)
1556                 return -ENOMEM;
1557
1558         mutex_init(&data->lock);
1559         i2c_set_clientdata(client, data);
1560
1561         if (client->dev.of_node)
1562                 chip = (enum chips)of_device_get_match_data(&client->dev);
1563         else
1564                 chip = id->driver_data;
1565
1566         /* Initialize device-specific values */
1567         switch (chip) {
1568         case adt7476:
1569                 data->has_voltage = 0x0e;       /* in1 to in3 */
1570                 revision = adt7475_read(REG_DEVID2) & 0x07;
1571                 break;
1572         case adt7490:
1573                 data->has_voltage = 0x3e;       /* in1 to in5 */
1574                 revision = adt7475_read(REG_DEVID2) & 0x03;
1575                 if (revision == 0x03)
1576                         revision += adt7475_read(REG_DEVREV2);
1577                 break;
1578         default:
1579                 data->has_voltage = 0x06;       /* in1, in2 */
1580                 revision = adt7475_read(REG_DEVID2) & 0x07;
1581         }
1582
1583         config3 = adt7475_read(REG_CONFIG3);
1584         /* Pin PWM2 may alternatively be used for ALERT output */
1585         if (!(config3 & CONFIG3_SMBALERT))
1586                 data->has_pwm2 = 1;
1587         /* Meaning of this bit is inverted for the ADT7473-1 */
1588         if (id->driver_data == adt7473 && revision >= 1)
1589                 data->has_pwm2 = !data->has_pwm2;
1590
1591         data->config4 = adt7475_read(REG_CONFIG4);
1592         /* Pin TACH4 may alternatively be used for THERM */
1593         if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1594                 data->has_fan4 = 1;
1595
1596         /*
1597          * THERM configuration is more complex on the ADT7476 and ADT7490,
1598          * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1599          * this function
1600          */
1601         if (id->driver_data == adt7490) {
1602                 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1603                     !(config3 & CONFIG3_THERM))
1604                         data->has_fan4 = 1;
1605         }
1606         if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1607                 if (!(config3 & CONFIG3_THERM) ||
1608                     (data->config4 & CONFIG4_PINFUNC) == 0x1)
1609                         data->has_voltage |= (1 << 0);          /* in0 */
1610         }
1611
1612         /*
1613          * On the ADT7476, the +12V input pin may instead be used as VID5,
1614          * and VID pins may alternatively be used as GPIO
1615          */
1616         if (id->driver_data == adt7476) {
1617                 u8 vid = adt7475_read(REG_VID);
1618                 if (!(vid & VID_VIDSEL))
1619                         data->has_voltage |= (1 << 4);          /* in4 */
1620
1621                 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1622         }
1623
1624         /* Voltage attenuators can be bypassed, globally or individually */
1625         config2 = adt7475_read(REG_CONFIG2);
1626         if (config2 & CONFIG2_ATTN) {
1627                 data->bypass_attn = (0x3 << 3) | 0x3;
1628         } else {
1629                 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1630                                     ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1631         }
1632         data->bypass_attn &= data->has_voltage;
1633
1634         /*
1635          * Call adt7475_read_pwm for all pwm's as this will reprogram any
1636          * pwm's which are disabled to manual mode with 0% duty cycle
1637          */
1638         for (i = 0; i < ADT7475_PWM_COUNT; i++)
1639                 adt7475_read_pwm(client, i);
1640
1641         /* Start monitoring */
1642         switch (chip) {
1643         case adt7475:
1644         case adt7476:
1645                 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1646                                           adt7475_read(REG_CONFIG1) | 0x01);
1647                 break;
1648         default:
1649                 break;
1650         }
1651
1652         ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1653         if (ret)
1654                 return ret;
1655
1656         /* Features that can be disabled individually */
1657         if (data->has_fan4) {
1658                 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1659                 if (ret)
1660                         goto eremove;
1661         }
1662         if (data->has_pwm2) {
1663                 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1664                 if (ret)
1665                         goto eremove;
1666         }
1667         if (data->has_voltage & (1 << 0)) {
1668                 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1669                 if (ret)
1670                         goto eremove;
1671         }
1672         if (data->has_voltage & (1 << 3)) {
1673                 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1674                 if (ret)
1675                         goto eremove;
1676         }
1677         if (data->has_voltage & (1 << 4)) {
1678                 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1679                 if (ret)
1680                         goto eremove;
1681         }
1682         if (data->has_voltage & (1 << 5)) {
1683                 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1684                 if (ret)
1685                         goto eremove;
1686         }
1687         if (data->has_vid) {
1688                 data->vrm = vid_which_vrm();
1689                 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
1690                 if (ret)
1691                         goto eremove;
1692         }
1693
1694         data->hwmon_dev = hwmon_device_register(&client->dev);
1695         if (IS_ERR(data->hwmon_dev)) {
1696                 ret = PTR_ERR(data->hwmon_dev);
1697                 goto eremove;
1698         }
1699
1700         dev_info(&client->dev, "%s device, revision %d\n",
1701                  names[id->driver_data], revision);
1702         if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1703                 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1704                          (data->has_voltage & (1 << 0)) ? " in0" : "",
1705                          (data->has_voltage & (1 << 4)) ? " in4" : "",
1706                          data->has_fan4 ? " fan4" : "",
1707                          data->has_pwm2 ? " pwm2" : "",
1708                          data->has_vid ? " vid" : "");
1709         if (data->bypass_attn)
1710                 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1711                          (data->bypass_attn & (1 << 0)) ? " in0" : "",
1712                          (data->bypass_attn & (1 << 1)) ? " in1" : "",
1713                          (data->bypass_attn & (1 << 3)) ? " in3" : "",
1714                          (data->bypass_attn & (1 << 4)) ? " in4" : "");
1715
1716         /* Limits and settings, should never change update more than once */
1717         ret = adt7475_update_limits(client);
1718         if (ret)
1719                 goto eremove;
1720
1721         return 0;
1722
1723 eremove:
1724         adt7475_remove_files(client, data);
1725         return ret;
1726 }
1727
1728 static int adt7475_remove(struct i2c_client *client)
1729 {
1730         struct adt7475_data *data = i2c_get_clientdata(client);
1731
1732         hwmon_device_unregister(data->hwmon_dev);
1733         adt7475_remove_files(client, data);
1734
1735         return 0;
1736 }
1737
1738 static struct i2c_driver adt7475_driver = {
1739         .class          = I2C_CLASS_HWMON,
1740         .driver = {
1741                 .name   = "adt7475",
1742                 .of_match_table = of_match_ptr(adt7475_of_match),
1743         },
1744         .probe          = adt7475_probe,
1745         .remove         = adt7475_remove,
1746         .id_table       = adt7475_id,
1747         .detect         = adt7475_detect,
1748         .address_list   = normal_i2c,
1749 };
1750
1751 static void adt7475_read_hystersis(struct i2c_client *client)
1752 {
1753         struct adt7475_data *data = i2c_get_clientdata(client);
1754
1755         data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1756         data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1757         data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1758 }
1759
1760 static void adt7475_read_pwm(struct i2c_client *client, int index)
1761 {
1762         struct adt7475_data *data = i2c_get_clientdata(client);
1763         unsigned int v;
1764
1765         data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1766
1767         /*
1768          * Figure out the internal value for pwmctrl and pwmchan
1769          * based on the current settings
1770          */
1771         v = (data->pwm[CONTROL][index] >> 5) & 7;
1772
1773         if (v == 3)
1774                 data->pwmctl[index] = 0;
1775         else if (v == 7)
1776                 data->pwmctl[index] = 1;
1777         else if (v == 4) {
1778                 /*
1779                  * The fan is disabled - we don't want to
1780                  * support that, so change to manual mode and
1781                  * set the duty cycle to 0 instead
1782                  */
1783                 data->pwm[INPUT][index] = 0;
1784                 data->pwm[CONTROL][index] &= ~0xE0;
1785                 data->pwm[CONTROL][index] |= (7 << 5);
1786
1787                 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1788                                           data->pwm[INPUT][index]);
1789
1790                 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1791                                           data->pwm[CONTROL][index]);
1792
1793                 data->pwmctl[index] = 1;
1794         } else {
1795                 data->pwmctl[index] = 2;
1796
1797                 switch (v) {
1798                 case 0:
1799                         data->pwmchan[index] = 1;
1800                         break;
1801                 case 1:
1802                         data->pwmchan[index] = 2;
1803                         break;
1804                 case 2:
1805                         data->pwmchan[index] = 4;
1806                         break;
1807                 case 5:
1808                         data->pwmchan[index] = 6;
1809                         break;
1810                 case 6:
1811                         data->pwmchan[index] = 7;
1812                         break;
1813                 }
1814         }
1815 }
1816
1817 static int adt7475_update_measure(struct device *dev)
1818 {
1819         struct i2c_client *client = to_i2c_client(dev);
1820         struct adt7475_data *data = i2c_get_clientdata(client);
1821         u16 ext;
1822         int i;
1823         int ret;
1824
1825         ret = adt7475_read(REG_STATUS2);
1826         if (ret < 0)
1827                 return ret;
1828         data->alarms = ret << 8;
1829
1830         ret = adt7475_read(REG_STATUS1);
1831         if (ret < 0)
1832                 return ret;
1833         data->alarms |= ret;
1834
1835         ret = adt7475_read(REG_EXTEND2);
1836         if (ret < 0)
1837                 return ret;
1838
1839         ext = (ret << 8);
1840
1841         ret = adt7475_read(REG_EXTEND1);
1842         if (ret < 0)
1843                 return ret;
1844
1845         ext |= ret;
1846
1847         for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1848                 if (!(data->has_voltage & (1 << i)))
1849                         continue;
1850                 ret = adt7475_read(VOLTAGE_REG(i));
1851                 if (ret < 0)
1852                         return ret;
1853                 data->voltage[INPUT][i] =
1854                         (ret << 2) |
1855                         ((ext >> (i * 2)) & 3);
1856         }
1857
1858         for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1859                 ret = adt7475_read(TEMP_REG(i));
1860                 if (ret < 0)
1861                         return ret;
1862                 data->temp[INPUT][i] =
1863                         (ret << 2) |
1864                         ((ext >> ((i + 5) * 2)) & 3);
1865         }
1866
1867         if (data->has_voltage & (1 << 5)) {
1868                 ret = adt7475_read(REG_STATUS4);
1869                 if (ret < 0)
1870                         return ret;
1871                 data->alarms |= ret << 24;
1872
1873                 ret = adt7475_read(REG_EXTEND3);
1874                 if (ret < 0)
1875                         return ret;
1876                 ext = ret;
1877
1878                 ret = adt7475_read(REG_VTT);
1879                 if (ret < 0)
1880                         return ret;
1881                 data->voltage[INPUT][5] = ret << 2 |
1882                         ((ext >> 4) & 3);
1883         }
1884
1885         for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1886                 if (i == 3 && !data->has_fan4)
1887                         continue;
1888                 ret = adt7475_read_word(client, TACH_REG(i));
1889                 if (ret < 0)
1890                         return ret;
1891                 data->tach[INPUT][i] = ret;
1892         }
1893
1894         /* Updated by hw when in auto mode */
1895         for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1896                 if (i == 1 && !data->has_pwm2)
1897                         continue;
1898                 ret = adt7475_read(PWM_REG(i));
1899                 if (ret < 0)
1900                         return ret;
1901                 data->pwm[INPUT][i] = ret;
1902         }
1903
1904         if (data->has_vid) {
1905                 ret = adt7475_read(REG_VID);
1906                 if (ret < 0)
1907                         return ret;
1908                 data->vid = ret & 0x3f;
1909         }
1910
1911         return 0;
1912 }
1913
1914 static struct adt7475_data *adt7475_update_device(struct device *dev)
1915 {
1916         struct i2c_client *client = to_i2c_client(dev);
1917         struct adt7475_data *data = i2c_get_clientdata(client);
1918         int ret;
1919
1920         mutex_lock(&data->lock);
1921
1922         /* Measurement values update every 2 seconds */
1923         if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1924             !data->valid) {
1925                 ret = adt7475_update_measure(dev);
1926                 if (ret) {
1927                         data->valid = false;
1928                         mutex_unlock(&data->lock);
1929                         return ERR_PTR(ret);
1930                 }
1931                 data->measure_updated = jiffies;
1932                 data->valid = true;
1933         }
1934
1935         mutex_unlock(&data->lock);
1936
1937         return data;
1938 }
1939
1940 module_i2c_driver(adt7475_driver);
1941
1942 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1943 MODULE_DESCRIPTION("adt7475 driver");
1944 MODULE_LICENSE("GPL");