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