linux/drivers/hwmon/adt7475.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
   4 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
   5 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
   6 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
   7 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>
   8 *
   9 * Derived from the lm83 driver by Jean Delvare
  10 */
  11
  12#include <linux/module.h>
  13#include <linux/of_device.h>
  14#include <linux/init.h>
  15#include <linux/slab.h>
  16#include <linux/i2c.h>
  17#include <linux/hwmon.h>
  18#include <linux/hwmon-sysfs.h>
  19#include <linux/hwmon-vid.h>
  20#include <linux/err.h>
  21#include <linux/jiffies.h>
  22#include <linux/util_macros.h>
  23
  24/* Indexes for the sysfs hooks */
  25
  26#define INPUT           0
  27#define MIN             1
  28#define MAX             2
  29#define CONTROL         3
  30#define OFFSET          3
  31#define AUTOMIN         4
  32#define THERM           5
  33#define HYSTERSIS       6
  34
  35/*
  36 * These are unique identifiers for the sysfs functions - unlike the
  37 * numbers above, these are not also indexes into an array
  38 */
  39
  40#define ALARM           9
  41#define FAULT           10
  42
  43/* 7475 Common Registers */
  44
  45#define REG_DEVREV2             0x12    /* ADT7490 only */
  46
  47#define REG_VTT                 0x1E    /* ADT7490 only */
  48#define REG_EXTEND3             0x1F    /* ADT7490 only */
  49
  50#define REG_VOLTAGE_BASE        0x20
  51#define REG_TEMP_BASE           0x25
  52#define REG_TACH_BASE           0x28
  53#define REG_PWM_BASE            0x30
  54#define REG_PWM_MAX_BASE        0x38
  55
  56#define REG_DEVID               0x3D
  57#define REG_VENDID              0x3E
  58#define REG_DEVID2              0x3F
  59
  60#define REG_CONFIG1             0x40
  61
  62#define REG_STATUS1             0x41
  63#define REG_STATUS2             0x42
  64
  65#define REG_VID                 0x43    /* ADT7476 only */
  66
  67#define REG_VOLTAGE_MIN_BASE    0x44
  68#define REG_VOLTAGE_MAX_BASE    0x45
  69
  70#define REG_TEMP_MIN_BASE       0x4E
  71#define REG_TEMP_MAX_BASE       0x4F
  72
  73#define REG_TACH_MIN_BASE       0x54
  74
  75#define REG_PWM_CONFIG_BASE     0x5C
  76
  77#define REG_TEMP_TRANGE_BASE    0x5F
  78
  79#define REG_ENHANCE_ACOUSTICS1  0x62
  80#define REG_ENHANCE_ACOUSTICS2  0x63
  81
  82#define REG_PWM_MIN_BASE        0x64
  83
  84#define REG_TEMP_TMIN_BASE      0x67
  85#define REG_TEMP_THERM_BASE     0x6A
  86
  87#define REG_REMOTE1_HYSTERSIS   0x6D
  88#define REG_REMOTE2_HYSTERSIS   0x6E
  89
  90#define REG_TEMP_OFFSET_BASE    0x70
  91
  92#define REG_CONFIG2             0x73
  93
  94#define REG_EXTEND1             0x76
  95#define REG_EXTEND2             0x77
  96
  97#define REG_CONFIG3             0x78
  98#define REG_CONFIG5             0x7C
  99#define REG_CONFIG4             0x7D
 100
 101#define REG_STATUS4             0x81    /* ADT7490 only */
 102
 103#define REG_VTT_MIN             0x84    /* ADT7490 only */
 104#define REG_VTT_MAX             0x86    /* ADT7490 only */
 105
 106#define VID_VIDSEL              0x80    /* ADT7476 only */
 107
 108#define CONFIG2_ATTN            0x20
 109
 110#define CONFIG3_SMBALERT        0x01
 111#define CONFIG3_THERM           0x02
 112
 113#define CONFIG4_PINFUNC         0x03
 114#define CONFIG4_MAXDUTY         0x08
 115#define CONFIG4_ATTN_IN10       0x30
 116#define CONFIG4_ATTN_IN43       0xC0
 117
 118#define CONFIG5_TWOSCOMP        0x01
 119#define CONFIG5_TEMPOFFSET      0x02
 120#define CONFIG5_VIDGPIO         0x10    /* ADT7476 only */
 121
 122/* ADT7475 Settings */
 123
 124#define ADT7475_VOLTAGE_COUNT   5       /* Not counting Vtt */
 125#define ADT7475_TEMP_COUNT      3
 126#define ADT7475_TACH_COUNT      4
 127#define ADT7475_PWM_COUNT       3
 128
 129/* Macro to read the registers */
 130
 131#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
 132
 133/* Macros to easily index the registers */
 134
 135#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
 136#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
 137
 138#define PWM_REG(idx) (REG_PWM_BASE + (idx))
 139#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
 140#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
 141#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
 142
 143#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
 144#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
 145#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
 146
 147#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
 148#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
 149#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
 150#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
 151#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
 152#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
 153#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
 154
 155static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
 156
 157enum chips { adt7473, adt7475, adt7476, adt7490 };
 158
 159static const struct i2c_device_id adt7475_id[] = {
 160        { "adt7473", adt7473 },
 161        { "adt7475", adt7475 },
 162        { "adt7476", adt7476 },
 163        { "adt7490", adt7490 },
 164        { }
 165};
 166MODULE_DEVICE_TABLE(i2c, adt7475_id);
 167
 168static const struct of_device_id __maybe_unused adt7475_of_match[] = {
 169        {
 170                .compatible = "adi,adt7473",
 171                .data = (void *)adt7473
 172        },
 173        {
 174                .compatible = "adi,adt7475",
 175                .data = (void *)adt7475
 176        },
 177        {
 178                .compatible = "adi,adt7476",
 179                .data = (void *)adt7476
 180        },
 181        {
 182                .compatible = "adi,adt7490",
 183                .data = (void *)adt7490
 184        },
 185        { },
 186};
 187MODULE_DEVICE_TABLE(of, adt7475_of_match);
 188
 189struct adt7475_data {
 190        struct i2c_client *client;
 191        struct mutex lock;
 192
 193        unsigned long measure_updated;
 194        bool valid;
 195
 196        u8 config4;
 197        u8 config5;
 198        u8 has_voltage;
 199        u8 bypass_attn;         /* Bypass voltage attenuator */
 200        u8 has_pwm2:1;
 201        u8 has_fan4:1;
 202        u8 has_vid:1;
 203        u32 alarms;
 204        u16 voltage[3][6];
 205        u16 temp[7][3];
 206        u16 tach[2][4];
 207        u8 pwm[4][3];
 208        u8 range[3];
 209        u8 pwmctl[3];
 210        u8 pwmchan[3];
 211        u8 enh_acoustics[2];
 212
 213        u8 vid;
 214        u8 vrm;
 215        const struct attribute_group *groups[9];
 216};
 217
 218static struct i2c_driver adt7475_driver;
 219static struct adt7475_data *adt7475_update_device(struct device *dev);
 220static void adt7475_read_hystersis(struct i2c_client *client);
 221static void adt7475_read_pwm(struct i2c_client *client, int index);
 222
 223/* Given a temp value, convert it to register value */
 224
 225static inline u16 temp2reg(struct adt7475_data *data, long val)
 226{
 227        u16 ret;
 228
 229        if (!(data->config5 & CONFIG5_TWOSCOMP)) {
 230                val = clamp_val(val, -64000, 191000);
 231                ret = (val + 64500) / 1000;
 232        } else {
 233                val = clamp_val(val, -128000, 127000);
 234                if (val < -500)
 235                        ret = (256500 + val) / 1000;
 236                else
 237                        ret = (val + 500) / 1000;
 238        }
 239
 240        return ret << 2;
 241}
 242
 243/* Given a register value, convert it to a real temp value */
 244
 245static inline int reg2temp(struct adt7475_data *data, u16 reg)
 246{
 247        if (data->config5 & CONFIG5_TWOSCOMP) {
 248                if (reg >= 512)
 249                        return (reg - 1024) * 250;
 250                else
 251                        return reg * 250;
 252        } else
 253                return (reg - 256) * 250;
 254}
 255
 256static inline int tach2rpm(u16 tach)
 257{
 258        if (tach == 0 || tach == 0xFFFF)
 259                return 0;
 260
 261        return (90000 * 60) / tach;
 262}
 263
 264static inline u16 rpm2tach(unsigned long rpm)
 265{
 266        if (rpm == 0)
 267                return 0;
 268
 269        return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
 270}
 271
 272/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
 273static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
 274        { 45, 94 },     /* +2.5V */
 275        { 175, 525 },   /* Vccp */
 276        { 68, 71 },     /* Vcc */
 277        { 93, 47 },     /* +5V */
 278        { 120, 20 },    /* +12V */
 279        { 45, 45 },     /* Vtt */
 280};
 281
 282static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
 283{
 284        const int *r = adt7473_in_scaling[channel];
 285
 286        if (bypass_attn & (1 << channel))
 287                return DIV_ROUND_CLOSEST(reg * 2250, 1024);
 288        return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
 289}
 290
 291static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
 292{
 293        const int *r = adt7473_in_scaling[channel];
 294        long reg;
 295
 296        if (bypass_attn & (1 << channel))
 297                reg = (volt * 1024) / 2250;
 298        else
 299                reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
 300        return clamp_val(reg, 0, 1023) & (0xff << 2);
 301}
 302
 303static int adt7475_read_word(struct i2c_client *client, int reg)
 304{
 305        int val1, val2;
 306
 307        val1 = i2c_smbus_read_byte_data(client, reg);
 308        if (val1 < 0)
 309                return val1;
 310        val2 = i2c_smbus_read_byte_data(client, reg + 1);
 311        if (val2 < 0)
 312                return val2;
 313
 314        return val1 | (val2 << 8);
 315}
 316
 317static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
 318{
 319        i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
 320        i2c_smbus_write_byte_data(client, reg, val & 0xFF);
 321}
 322
 323static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,
 324                            char *buf)
 325{
 326        struct adt7475_data *data = adt7475_update_device(dev);
 327        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 328        unsigned short val;
 329
 330        if (IS_ERR(data))
 331                return PTR_ERR(data);
 332
 333        switch (sattr->nr) {
 334        case ALARM:
 335                return sprintf(buf, "%d\n",
 336                               (data->alarms >> sattr->index) & 1);
 337        default:
 338                val = data->voltage[sattr->nr][sattr->index];
 339                return sprintf(buf, "%d\n",
 340                               reg2volt(sattr->index, val, data->bypass_attn));
 341        }
 342}
 343
 344static ssize_t voltage_store(struct device *dev,
 345                             struct device_attribute *attr, const char *buf,
 346                             size_t count)
 347{
 348
 349        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 350        struct adt7475_data *data = dev_get_drvdata(dev);
 351        struct i2c_client *client = data->client;
 352        unsigned char reg;
 353        long val;
 354
 355        if (kstrtol(buf, 10, &val))
 356                return -EINVAL;
 357
 358        mutex_lock(&data->lock);
 359
 360        data->voltage[sattr->nr][sattr->index] =
 361                                volt2reg(sattr->index, val, data->bypass_attn);
 362
 363        if (sattr->index < ADT7475_VOLTAGE_COUNT) {
 364                if (sattr->nr == MIN)
 365                        reg = VOLTAGE_MIN_REG(sattr->index);
 366                else
 367                        reg = VOLTAGE_MAX_REG(sattr->index);
 368        } else {
 369                if (sattr->nr == MIN)
 370                        reg = REG_VTT_MIN;
 371                else
 372                        reg = REG_VTT_MAX;
 373        }
 374
 375        i2c_smbus_write_byte_data(client, reg,
 376                                  data->voltage[sattr->nr][sattr->index] >> 2);
 377        mutex_unlock(&data->lock);
 378
 379        return count;
 380}
 381
 382static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
 383                         char *buf)
 384{
 385        struct adt7475_data *data = adt7475_update_device(dev);
 386        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 387        int out;
 388
 389        if (IS_ERR(data))
 390                return PTR_ERR(data);
 391
 392        switch (sattr->nr) {
 393        case HYSTERSIS:
 394                mutex_lock(&data->lock);
 395                out = data->temp[sattr->nr][sattr->index];
 396                if (sattr->index != 1)
 397                        out = (out >> 4) & 0xF;
 398                else
 399                        out = (out & 0xF);
 400                /*
 401                 * Show the value as an absolute number tied to
 402                 * THERM
 403                 */
 404                out = reg2temp(data, data->temp[THERM][sattr->index]) -
 405                        out * 1000;
 406                mutex_unlock(&data->lock);
 407                break;
 408
 409        case OFFSET:
 410                /*
 411                 * Offset is always 2's complement, regardless of the
 412                 * setting in CONFIG5
 413                 */
 414                mutex_lock(&data->lock);
 415                out = (s8)data->temp[sattr->nr][sattr->index];
 416                if (data->config5 & CONFIG5_TEMPOFFSET)
 417                        out *= 1000;
 418                else
 419                        out *= 500;
 420                mutex_unlock(&data->lock);
 421                break;
 422
 423        case ALARM:
 424                out = (data->alarms >> (sattr->index + 4)) & 1;
 425                break;
 426
 427        case FAULT:
 428                /* Note - only for remote1 and remote2 */
 429                out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
 430                break;
 431
 432        default:
 433                /* All other temp values are in the configured format */
 434                out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
 435        }
 436
 437        return sprintf(buf, "%d\n", out);
 438}
 439
 440static ssize_t temp_store(struct device *dev, struct device_attribute *attr,
 441                          const char *buf, size_t count)
 442{
 443        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 444        struct adt7475_data *data = dev_get_drvdata(dev);
 445        struct i2c_client *client = data->client;
 446        unsigned char reg = 0;
 447        u8 out;
 448        int temp;
 449        long val;
 450
 451        if (kstrtol(buf, 10, &val))
 452                return -EINVAL;
 453
 454        mutex_lock(&data->lock);
 455
 456        /* We need the config register in all cases for temp <-> reg conv. */
 457        data->config5 = adt7475_read(REG_CONFIG5);
 458
 459        switch (sattr->nr) {
 460        case OFFSET:
 461                if (data->config5 & CONFIG5_TEMPOFFSET) {
 462                        val = clamp_val(val, -63000, 127000);
 463                        out = data->temp[OFFSET][sattr->index] = val / 1000;
 464                } else {
 465                        val = clamp_val(val, -63000, 64000);
 466                        out = data->temp[OFFSET][sattr->index] = val / 500;
 467                }
 468                break;
 469
 470        case HYSTERSIS:
 471                /*
 472                 * The value will be given as an absolute value, turn it
 473                 * into an offset based on THERM
 474                 */
 475
 476                /* Read fresh THERM and HYSTERSIS values from the chip */
 477                data->temp[THERM][sattr->index] =
 478                        adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
 479                adt7475_read_hystersis(client);
 480
 481                temp = reg2temp(data, data->temp[THERM][sattr->index]);
 482                val = clamp_val(val, temp - 15000, temp);
 483                val = (temp - val) / 1000;
 484
 485                if (sattr->index != 1) {
 486                        data->temp[HYSTERSIS][sattr->index] &= 0xF0;
 487                        data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
 488                } else {
 489                        data->temp[HYSTERSIS][sattr->index] &= 0x0F;
 490                        data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
 491                }
 492
 493                out = data->temp[HYSTERSIS][sattr->index];
 494                break;
 495
 496        default:
 497                data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
 498
 499                /*
 500                 * We maintain an extra 2 digits of precision for simplicity
 501                 * - shift those back off before writing the value
 502                 */
 503                out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
 504        }
 505
 506        switch (sattr->nr) {
 507        case MIN:
 508                reg = TEMP_MIN_REG(sattr->index);
 509                break;
 510        case MAX:
 511                reg = TEMP_MAX_REG(sattr->index);
 512                break;
 513        case OFFSET:
 514                reg = TEMP_OFFSET_REG(sattr->index);
 515                break;
 516        case AUTOMIN:
 517                reg = TEMP_TMIN_REG(sattr->index);
 518                break;
 519        case THERM:
 520                reg = TEMP_THERM_REG(sattr->index);
 521                break;
 522        case HYSTERSIS:
 523                if (sattr->index != 2)
 524                        reg = REG_REMOTE1_HYSTERSIS;
 525                else
 526                        reg = REG_REMOTE2_HYSTERSIS;
 527
 528                break;
 529        }
 530
 531        i2c_smbus_write_byte_data(client, reg, out);
 532
 533        mutex_unlock(&data->lock);
 534        return count;
 535}
 536
 537/* Assuming CONFIG6[SLOW] is 0 */
 538static const int ad7475_st_map[] = {
 539        37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
 540};
 541
 542static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,
 543                            char *buf)
 544{
 545        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 546        struct adt7475_data *data = dev_get_drvdata(dev);
 547        long val;
 548
 549        switch (sattr->index) {
 550        case 0:
 551                val = data->enh_acoustics[0] & 0xf;
 552                break;
 553        case 1:
 554                val = (data->enh_acoustics[1] >> 4) & 0xf;
 555                break;
 556        case 2:
 557        default:
 558                val = data->enh_acoustics[1] & 0xf;
 559                break;
 560        }
 561
 562        if (val & 0x8)
 563                return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
 564        else
 565                return sprintf(buf, "0\n");
 566}
 567
 568static ssize_t temp_st_store(struct device *dev,
 569                             struct device_attribute *attr, const char *buf,
 570                             size_t count)
 571{
 572        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 573        struct adt7475_data *data = dev_get_drvdata(dev);
 574        struct i2c_client *client = data->client;
 575        unsigned char reg;
 576        int shift, idx;
 577        ulong val;
 578
 579        if (kstrtoul(buf, 10, &val))
 580                return -EINVAL;
 581
 582        switch (sattr->index) {
 583        case 0:
 584                reg = REG_ENHANCE_ACOUSTICS1;
 585                shift = 0;
 586                idx = 0;
 587                break;
 588        case 1:
 589                reg = REG_ENHANCE_ACOUSTICS2;
 590                shift = 0;
 591                idx = 1;
 592                break;
 593        case 2:
 594        default:
 595                reg = REG_ENHANCE_ACOUSTICS2;
 596                shift = 4;
 597                idx = 1;
 598                break;
 599        }
 600
 601        if (val > 0) {
 602                val = find_closest_descending(val, ad7475_st_map,
 603                                              ARRAY_SIZE(ad7475_st_map));
 604                val |= 0x8;
 605        }
 606
 607        mutex_lock(&data->lock);
 608
 609        data->enh_acoustics[idx] &= ~(0xf << shift);
 610        data->enh_acoustics[idx] |= (val << shift);
 611
 612        i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
 613
 614        mutex_unlock(&data->lock);
 615
 616        return count;
 617}
 618
 619/*
 620 * Table of autorange values - the user will write the value in millidegrees,
 621 * and we'll convert it
 622 */
 623static const int autorange_table[] = {
 624        2000, 2500, 3330, 4000, 5000, 6670, 8000,
 625        10000, 13330, 16000, 20000, 26670, 32000, 40000,
 626        53330, 80000
 627};
 628
 629static ssize_t point2_show(struct device *dev, struct device_attribute *attr,
 630                           char *buf)
 631{
 632        struct adt7475_data *data = adt7475_update_device(dev);
 633        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 634        int out, val;
 635
 636        if (IS_ERR(data))
 637                return PTR_ERR(data);
 638
 639        mutex_lock(&data->lock);
 640        out = (data->range[sattr->index] >> 4) & 0x0F;
 641        val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
 642        mutex_unlock(&data->lock);
 643
 644        return sprintf(buf, "%d\n", val + autorange_table[out]);
 645}
 646
 647static ssize_t point2_store(struct device *dev, struct device_attribute *attr,
 648                            const char *buf, size_t count)
 649{
 650        struct adt7475_data *data = dev_get_drvdata(dev);
 651        struct i2c_client *client = data->client;
 652        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 653        int temp;
 654        long val;
 655
 656        if (kstrtol(buf, 10, &val))
 657                return -EINVAL;
 658
 659        mutex_lock(&data->lock);
 660
 661        /* Get a fresh copy of the needed registers */
 662        data->config5 = adt7475_read(REG_CONFIG5);
 663        data->temp[AUTOMIN][sattr->index] =
 664                adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
 665        data->range[sattr->index] =
 666                adt7475_read(TEMP_TRANGE_REG(sattr->index));
 667
 668        /*
 669         * The user will write an absolute value, so subtract the start point
 670         * to figure the range
 671         */
 672        temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
 673        val = clamp_val(val, temp + autorange_table[0],
 674                temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
 675        val -= temp;
 676
 677        /* Find the nearest table entry to what the user wrote */
 678        val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
 679
 680        data->range[sattr->index] &= ~0xF0;
 681        data->range[sattr->index] |= val << 4;
 682
 683        i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
 684                                  data->range[sattr->index]);
 685
 686        mutex_unlock(&data->lock);
 687        return count;
 688}
 689
 690static ssize_t tach_show(struct device *dev, struct device_attribute *attr,
 691                         char *buf)
 692{
 693        struct adt7475_data *data = adt7475_update_device(dev);
 694        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 695        int out;
 696
 697        if (IS_ERR(data))
 698                return PTR_ERR(data);
 699
 700        if (sattr->nr == ALARM)
 701                out = (data->alarms >> (sattr->index + 10)) & 1;
 702        else
 703                out = tach2rpm(data->tach[sattr->nr][sattr->index]);
 704
 705        return sprintf(buf, "%d\n", out);
 706}
 707
 708static ssize_t tach_store(struct device *dev, struct device_attribute *attr,
 709                          const char *buf, size_t count)
 710{
 711
 712        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 713        struct adt7475_data *data = dev_get_drvdata(dev);
 714        struct i2c_client *client = data->client;
 715        unsigned long val;
 716
 717        if (kstrtoul(buf, 10, &val))
 718                return -EINVAL;
 719
 720        mutex_lock(&data->lock);
 721
 722        data->tach[MIN][sattr->index] = rpm2tach(val);
 723
 724        adt7475_write_word(client, TACH_MIN_REG(sattr->index),
 725                           data->tach[MIN][sattr->index]);
 726
 727        mutex_unlock(&data->lock);
 728        return count;
 729}
 730
 731static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
 732                        char *buf)
 733{
 734        struct adt7475_data *data = adt7475_update_device(dev);
 735        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 736
 737        if (IS_ERR(data))
 738                return PTR_ERR(data);
 739
 740        return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
 741}
 742
 743static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr,
 744                            char *buf)
 745{
 746        struct adt7475_data *data = adt7475_update_device(dev);
 747        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 748
 749        if (IS_ERR(data))
 750                return PTR_ERR(data);
 751
 752        return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
 753}
 754
 755static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr,
 756                            char *buf)
 757{
 758        struct adt7475_data *data = adt7475_update_device(dev);
 759        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 760
 761        if (IS_ERR(data))
 762                return PTR_ERR(data);
 763
 764        return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
 765}
 766
 767static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
 768                         const char *buf, size_t count)
 769{
 770
 771        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 772        struct adt7475_data *data = dev_get_drvdata(dev);
 773        struct i2c_client *client = data->client;
 774        unsigned char reg = 0;
 775        long val;
 776
 777        if (kstrtol(buf, 10, &val))
 778                return -EINVAL;
 779
 780        mutex_lock(&data->lock);
 781
 782        switch (sattr->nr) {
 783        case INPUT:
 784                /* Get a fresh value for CONTROL */
 785                data->pwm[CONTROL][sattr->index] =
 786                        adt7475_read(PWM_CONFIG_REG(sattr->index));
 787
 788                /*
 789                 * If we are not in manual mode, then we shouldn't allow
 790                 * the user to set the pwm speed
 791                 */
 792                if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
 793                        mutex_unlock(&data->lock);
 794                        return count;
 795                }
 796
 797                reg = PWM_REG(sattr->index);
 798                break;
 799
 800        case MIN:
 801                reg = PWM_MIN_REG(sattr->index);
 802                break;
 803
 804        case MAX:
 805                reg = PWM_MAX_REG(sattr->index);
 806                break;
 807        }
 808
 809        data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
 810        i2c_smbus_write_byte_data(client, reg,
 811                                  data->pwm[sattr->nr][sattr->index]);
 812        mutex_unlock(&data->lock);
 813
 814        return count;
 815}
 816
 817static ssize_t stall_disable_show(struct device *dev,
 818                                  struct device_attribute *attr, char *buf)
 819{
 820        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 821        struct adt7475_data *data = dev_get_drvdata(dev);
 822
 823        u8 mask = BIT(5 + sattr->index);
 824
 825        return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
 826}
 827
 828static ssize_t stall_disable_store(struct device *dev,
 829                                   struct device_attribute *attr,
 830                                   const char *buf, size_t count)
 831{
 832        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 833        struct adt7475_data *data = dev_get_drvdata(dev);
 834        struct i2c_client *client = data->client;
 835        long val;
 836        u8 mask = BIT(5 + sattr->index);
 837
 838        if (kstrtol(buf, 10, &val))
 839                return -EINVAL;
 840
 841        mutex_lock(&data->lock);
 842
 843        data->enh_acoustics[0] &= ~mask;
 844        if (val)
 845                data->enh_acoustics[0] |= mask;
 846
 847        i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
 848                                  data->enh_acoustics[0]);
 849
 850        mutex_unlock(&data->lock);
 851
 852        return count;
 853}
 854
 855/* Called by set_pwmctrl and set_pwmchan */
 856
 857static int hw_set_pwm(struct i2c_client *client, int index,
 858                      unsigned int pwmctl, unsigned int pwmchan)
 859{
 860        struct adt7475_data *data = i2c_get_clientdata(client);
 861        long val = 0;
 862
 863        switch (pwmctl) {
 864        case 0:
 865                val = 0x03;     /* Run at full speed */
 866                break;
 867        case 1:
 868                val = 0x07;     /* Manual mode */
 869                break;
 870        case 2:
 871                switch (pwmchan) {
 872                case 1:
 873                        /* Remote1 controls PWM */
 874                        val = 0x00;
 875                        break;
 876                case 2:
 877                        /* local controls PWM */
 878                        val = 0x01;
 879                        break;
 880                case 4:
 881                        /* remote2 controls PWM */
 882                        val = 0x02;
 883                        break;
 884                case 6:
 885                        /* local/remote2 control PWM */
 886                        val = 0x05;
 887                        break;
 888                case 7:
 889                        /* All three control PWM */
 890                        val = 0x06;
 891                        break;
 892                default:
 893                        return -EINVAL;
 894                }
 895                break;
 896        default:
 897                return -EINVAL;
 898        }
 899
 900        data->pwmctl[index] = pwmctl;
 901        data->pwmchan[index] = pwmchan;
 902
 903        data->pwm[CONTROL][index] &= ~0xE0;
 904        data->pwm[CONTROL][index] |= (val & 7) << 5;
 905
 906        i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
 907                                  data->pwm[CONTROL][index]);
 908
 909        return 0;
 910}
 911
 912static ssize_t pwmchan_store(struct device *dev,
 913                             struct device_attribute *attr, const char *buf,
 914                             size_t count)
 915{
 916        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 917        struct adt7475_data *data = dev_get_drvdata(dev);
 918        struct i2c_client *client = data->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
 936static ssize_t pwmctrl_store(struct device *dev,
 937                             struct device_attribute *attr, const char *buf,
 938                             size_t count)
 939{
 940        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 941        struct adt7475_data *data = dev_get_drvdata(dev);
 942        struct i2c_client *client = data->client;
 943        int r;
 944        long val;
 945
 946        if (kstrtol(buf, 10, &val))
 947                return -EINVAL;
 948
 949        mutex_lock(&data->lock);
 950        /* Read Modify Write PWM values */
 951        adt7475_read_pwm(client, sattr->index);
 952        r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
 953        if (r)
 954                count = r;
 955        mutex_unlock(&data->lock);
 956
 957        return count;
 958}
 959
 960/* List of frequencies for the PWM */
 961static const int pwmfreq_table[] = {
 962        11, 14, 22, 29, 35, 44, 58, 88, 22500
 963};
 964
 965static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,
 966                            char *buf)
 967{
 968        struct adt7475_data *data = adt7475_update_device(dev);
 969        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 970        int idx;
 971
 972        if (IS_ERR(data))
 973                return PTR_ERR(data);
 974        idx = clamp_val(data->range[sattr->index] & 0xf, 0,
 975                        ARRAY_SIZE(pwmfreq_table) - 1);
 976
 977        return sprintf(buf, "%d\n", pwmfreq_table[idx]);
 978}
 979
 980static ssize_t pwmfreq_store(struct device *dev,
 981                             struct device_attribute *attr, const char *buf,
 982                             size_t count)
 983{
 984        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 985        struct adt7475_data *data = dev_get_drvdata(dev);
 986        struct i2c_client *client = data->client;
 987        int out;
 988        long val;
 989
 990        if (kstrtol(buf, 10, &val))
 991                return -EINVAL;
 992
 993        out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
 994
 995        mutex_lock(&data->lock);
 996
 997        data->range[sattr->index] =
 998                adt7475_read(TEMP_TRANGE_REG(sattr->index));
 999        data->range[sattr->index] &= ~0xf;
1000        data->range[sattr->index] |= out;
1001
1002        i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1003                                  data->range[sattr->index]);
1004
1005        mutex_unlock(&data->lock);
1006        return count;
1007}
1008
1009static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1010                                        struct device_attribute *devattr,
1011                                        char *buf)
1012{
1013        struct adt7475_data *data = adt7475_update_device(dev);
1014
1015        if (IS_ERR(data))
1016                return PTR_ERR(data);
1017
1018        return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1019}
1020
1021static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1022                                        struct device_attribute *devattr,
1023                                        const char *buf, size_t count)
1024{
1025        struct adt7475_data *data = dev_get_drvdata(dev);
1026        struct i2c_client *client = data->client;
1027        long val;
1028
1029        if (kstrtol(buf, 10, &val))
1030                return -EINVAL;
1031        if (val != 0 && val != 1)
1032                return -EINVAL;
1033
1034        mutex_lock(&data->lock);
1035        data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1036        if (val)
1037                data->config4 |= CONFIG4_MAXDUTY;
1038        else
1039                data->config4 &= ~CONFIG4_MAXDUTY;
1040        i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1041        mutex_unlock(&data->lock);
1042
1043        return count;
1044}
1045
1046static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1047                        char *buf)
1048{
1049        struct adt7475_data *data = dev_get_drvdata(dev);
1050        return sprintf(buf, "%d\n", (int)data->vrm);
1051}
1052
1053static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1054                         const char *buf, size_t count)
1055{
1056        struct adt7475_data *data = dev_get_drvdata(dev);
1057        long val;
1058
1059        if (kstrtol(buf, 10, &val))
1060                return -EINVAL;
1061        if (val < 0 || val > 255)
1062                return -EINVAL;
1063        data->vrm = val;
1064
1065        return count;
1066}
1067
1068static ssize_t cpu0_vid_show(struct device *dev,
1069                             struct device_attribute *devattr, char *buf)
1070{
1071        struct adt7475_data *data = adt7475_update_device(dev);
1072
1073        if (IS_ERR(data))
1074                return PTR_ERR(data);
1075
1076        return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1077}
1078
1079static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);
1080static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);
1081static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);
1082static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);
1083static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);
1084static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);
1085static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);
1086static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);
1087static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);
1088static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);
1089static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);
1090static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);
1091static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);
1092static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);
1093static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);
1094static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);
1095static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);
1096static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);
1097static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);
1098static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);
1099static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);
1100static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);
1101static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);
1102static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);
1103static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);
1104static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);
1105static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);
1106static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);
1107static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);
1108static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);
1109static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);
1110static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);
1111static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);
1112static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);
1113static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);
1114static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);
1115static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);
1116static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);
1117static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);
1118static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);
1119static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);
1120static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);
1121static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);
1122static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);
1123static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);
1124static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);
1125static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);
1126static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);
1127static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);
1128static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);
1129static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);
1130static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);
1131static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);
1132static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);
1133static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);
1134static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);
1135static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);
1136static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);
1137static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);
1138static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);
1139static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);
1140static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);
1141static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);
1142static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);
1143static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);
1144static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);
1145static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);
1146static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);
1147static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);
1148static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);
1149static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);
1150static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);
1151static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);
1152static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);
1153static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);
1154static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);
1155static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);
1156static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);
1157static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);
1158static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);
1159static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);
1160static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);
1161static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);
1162static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);
1163static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);
1164static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);
1165static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);
1166static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);
1167static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);
1168
1169/* Non-standard name, might need revisiting */
1170static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1171
1172static DEVICE_ATTR_RW(vrm);
1173static DEVICE_ATTR_RO(cpu0_vid);
1174
1175static struct attribute *adt7475_attrs[] = {
1176        &sensor_dev_attr_in1_input.dev_attr.attr,
1177        &sensor_dev_attr_in1_max.dev_attr.attr,
1178        &sensor_dev_attr_in1_min.dev_attr.attr,
1179        &sensor_dev_attr_in1_alarm.dev_attr.attr,
1180        &sensor_dev_attr_in2_input.dev_attr.attr,
1181        &sensor_dev_attr_in2_max.dev_attr.attr,
1182        &sensor_dev_attr_in2_min.dev_attr.attr,
1183        &sensor_dev_attr_in2_alarm.dev_attr.attr,
1184        &sensor_dev_attr_temp1_input.dev_attr.attr,
1185        &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1186        &sensor_dev_attr_temp1_fault.dev_attr.attr,
1187        &sensor_dev_attr_temp1_max.dev_attr.attr,
1188        &sensor_dev_attr_temp1_min.dev_attr.attr,
1189        &sensor_dev_attr_temp1_offset.dev_attr.attr,
1190        &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1191        &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1192        &sensor_dev_attr_temp1_crit.dev_attr.attr,
1193        &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1194        &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1195        &sensor_dev_attr_temp2_input.dev_attr.attr,
1196        &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1197        &sensor_dev_attr_temp2_max.dev_attr.attr,
1198        &sensor_dev_attr_temp2_min.dev_attr.attr,
1199        &sensor_dev_attr_temp2_offset.dev_attr.attr,
1200        &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1201        &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1202        &sensor_dev_attr_temp2_crit.dev_attr.attr,
1203        &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1204        &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1205        &sensor_dev_attr_temp3_input.dev_attr.attr,
1206        &sensor_dev_attr_temp3_fault.dev_attr.attr,
1207        &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1208        &sensor_dev_attr_temp3_max.dev_attr.attr,
1209        &sensor_dev_attr_temp3_min.dev_attr.attr,
1210        &sensor_dev_attr_temp3_offset.dev_attr.attr,
1211        &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1212        &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1213        &sensor_dev_attr_temp3_crit.dev_attr.attr,
1214        &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1215        &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1216        &sensor_dev_attr_fan1_input.dev_attr.attr,
1217        &sensor_dev_attr_fan1_min.dev_attr.attr,
1218        &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1219        &sensor_dev_attr_fan2_input.dev_attr.attr,
1220        &sensor_dev_attr_fan2_min.dev_attr.attr,
1221        &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1222        &sensor_dev_attr_fan3_input.dev_attr.attr,
1223        &sensor_dev_attr_fan3_min.dev_attr.attr,
1224        &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1225        &sensor_dev_attr_pwm1.dev_attr.attr,
1226        &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1227        &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1228        &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1229        &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1230        &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1231        &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1232        &sensor_dev_attr_pwm3.dev_attr.attr,
1233        &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1234        &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1235        &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1236        &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1237        &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1238        &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1239        &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1240        NULL,
1241};
1242
1243static struct attribute *fan4_attrs[] = {
1244        &sensor_dev_attr_fan4_input.dev_attr.attr,
1245        &sensor_dev_attr_fan4_min.dev_attr.attr,
1246        &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1247        NULL
1248};
1249
1250static struct attribute *pwm2_attrs[] = {
1251        &sensor_dev_attr_pwm2.dev_attr.attr,
1252        &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1253        &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1254        &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1255        &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1256        &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1257        &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1258        NULL
1259};
1260
1261static struct attribute *in0_attrs[] = {
1262        &sensor_dev_attr_in0_input.dev_attr.attr,
1263        &sensor_dev_attr_in0_max.dev_attr.attr,
1264        &sensor_dev_attr_in0_min.dev_attr.attr,
1265        &sensor_dev_attr_in0_alarm.dev_attr.attr,
1266        NULL
1267};
1268
1269static struct attribute *in3_attrs[] = {
1270        &sensor_dev_attr_in3_input.dev_attr.attr,
1271        &sensor_dev_attr_in3_max.dev_attr.attr,
1272        &sensor_dev_attr_in3_min.dev_attr.attr,
1273        &sensor_dev_attr_in3_alarm.dev_attr.attr,
1274        NULL
1275};
1276
1277static struct attribute *in4_attrs[] = {
1278        &sensor_dev_attr_in4_input.dev_attr.attr,
1279        &sensor_dev_attr_in4_max.dev_attr.attr,
1280        &sensor_dev_attr_in4_min.dev_attr.attr,
1281        &sensor_dev_attr_in4_alarm.dev_attr.attr,
1282        NULL
1283};
1284
1285static struct attribute *in5_attrs[] = {
1286        &sensor_dev_attr_in5_input.dev_attr.attr,
1287        &sensor_dev_attr_in5_max.dev_attr.attr,
1288        &sensor_dev_attr_in5_min.dev_attr.attr,
1289        &sensor_dev_attr_in5_alarm.dev_attr.attr,
1290        NULL
1291};
1292
1293static struct attribute *vid_attrs[] = {
1294        &dev_attr_cpu0_vid.attr,
1295        &dev_attr_vrm.attr,
1296        NULL
1297};
1298
1299static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1300static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1301static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1302static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1303static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1304static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1305static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1306static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1307
1308static int adt7475_detect(struct i2c_client *client,
1309                          struct i2c_board_info *info)
1310{
1311        struct i2c_adapter *adapter = client->adapter;
1312        int vendid, devid, devid2;
1313        const char *name;
1314
1315        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1316                return -ENODEV;
1317
1318        vendid = adt7475_read(REG_VENDID);
1319        devid2 = adt7475_read(REG_DEVID2);
1320        if (vendid != 0x41 ||           /* Analog Devices */
1321            (devid2 & 0xf8) != 0x68)
1322                return -ENODEV;
1323
1324        devid = adt7475_read(REG_DEVID);
1325        if (devid == 0x73)
1326                name = "adt7473";
1327        else if (devid == 0x75 && client->addr == 0x2e)
1328                name = "adt7475";
1329        else if (devid == 0x76)
1330                name = "adt7476";
1331        else if ((devid2 & 0xfc) == 0x6c)
1332                name = "adt7490";
1333        else {
1334                dev_dbg(&adapter->dev,
1335                        "Couldn't detect an ADT7473/75/76/90 part at "
1336                        "0x%02x\n", (unsigned int)client->addr);
1337                return -ENODEV;
1338        }
1339
1340        strlcpy(info->type, name, I2C_NAME_SIZE);
1341
1342        return 0;
1343}
1344
1345static int adt7475_update_limits(struct i2c_client *client)
1346{
1347        struct adt7475_data *data = i2c_get_clientdata(client);
1348        int i;
1349        int ret;
1350
1351        ret = adt7475_read(REG_CONFIG4);
1352        if (ret < 0)
1353                return ret;
1354        data->config4 = ret;
1355
1356        ret = adt7475_read(REG_CONFIG5);
1357        if (ret < 0)
1358                return ret;
1359        data->config5 = ret;
1360
1361        for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1362                if (!(data->has_voltage & (1 << i)))
1363                        continue;
1364                /* Adjust values so they match the input precision */
1365                ret = adt7475_read(VOLTAGE_MIN_REG(i));
1366                if (ret < 0)
1367                        return ret;
1368                data->voltage[MIN][i] = ret << 2;
1369
1370                ret = adt7475_read(VOLTAGE_MAX_REG(i));
1371                if (ret < 0)
1372                        return ret;
1373                data->voltage[MAX][i] = ret << 2;
1374        }
1375
1376        if (data->has_voltage & (1 << 5)) {
1377                ret = adt7475_read(REG_VTT_MIN);
1378                if (ret < 0)
1379                        return ret;
1380                data->voltage[MIN][5] = ret << 2;
1381
1382                ret = adt7475_read(REG_VTT_MAX);
1383                if (ret < 0)
1384                        return ret;
1385                data->voltage[MAX][5] = ret << 2;
1386        }
1387
1388        for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1389                /* Adjust values so they match the input precision */
1390                ret = adt7475_read(TEMP_MIN_REG(i));
1391                if (ret < 0)
1392                        return ret;
1393                data->temp[MIN][i] = ret << 2;
1394
1395                ret = adt7475_read(TEMP_MAX_REG(i));
1396                if (ret < 0)
1397                        return ret;
1398                data->temp[MAX][i] = ret << 2;
1399
1400                ret = adt7475_read(TEMP_TMIN_REG(i));
1401                if (ret < 0)
1402                        return ret;
1403                data->temp[AUTOMIN][i] = ret << 2;
1404
1405                ret = adt7475_read(TEMP_THERM_REG(i));
1406                if (ret < 0)
1407                        return ret;
1408                data->temp[THERM][i] = ret << 2;
1409
1410                ret = adt7475_read(TEMP_OFFSET_REG(i));
1411                if (ret < 0)
1412                        return ret;
1413                data->temp[OFFSET][i] = ret;
1414        }
1415        adt7475_read_hystersis(client);
1416
1417        for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1418                if (i == 3 && !data->has_fan4)
1419                        continue;
1420                ret = adt7475_read_word(client, TACH_MIN_REG(i));
1421                if (ret < 0)
1422                        return ret;
1423                data->tach[MIN][i] = ret;
1424        }
1425
1426        for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1427                if (i == 1 && !data->has_pwm2)
1428                        continue;
1429                ret = adt7475_read(PWM_MAX_REG(i));
1430                if (ret < 0)
1431                        return ret;
1432                data->pwm[MAX][i] = ret;
1433
1434                ret = adt7475_read(PWM_MIN_REG(i));
1435                if (ret < 0)
1436                        return ret;
1437                data->pwm[MIN][i] = ret;
1438                /* Set the channel and control information */
1439                adt7475_read_pwm(client, i);
1440        }
1441
1442        ret = adt7475_read(TEMP_TRANGE_REG(0));
1443        if (ret < 0)
1444                return ret;
1445        data->range[0] = ret;
1446
1447        ret = adt7475_read(TEMP_TRANGE_REG(1));
1448        if (ret < 0)
1449                return ret;
1450        data->range[1] = ret;
1451
1452        ret = adt7475_read(TEMP_TRANGE_REG(2));
1453        if (ret < 0)
1454                return ret;
1455        data->range[2] = ret;
1456
1457        return 0;
1458}
1459
1460static int adt7475_probe(struct i2c_client *client,
1461                         const struct i2c_device_id *id)
1462{
1463        enum chips chip;
1464        static const char * const names[] = {
1465                [adt7473] = "ADT7473",
1466                [adt7475] = "ADT7475",
1467                [adt7476] = "ADT7476",
1468                [adt7490] = "ADT7490",
1469        };
1470
1471        struct adt7475_data *data;
1472        struct device *hwmon_dev;
1473        int i, ret = 0, revision, group_num = 0;
1474        u8 config2, config3;
1475
1476        data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1477        if (data == NULL)
1478                return -ENOMEM;
1479
1480        mutex_init(&data->lock);
1481        data->client = client;
1482        i2c_set_clientdata(client, data);
1483
1484        if (client->dev.of_node)
1485                chip = (enum chips)of_device_get_match_data(&client->dev);
1486        else
1487                chip = id->driver_data;
1488
1489        /* Initialize device-specific values */
1490        switch (chip) {
1491        case adt7476:
1492                data->has_voltage = 0x0e;       /* in1 to in3 */
1493                revision = adt7475_read(REG_DEVID2) & 0x07;
1494                break;
1495        case adt7490:
1496                data->has_voltage = 0x3e;       /* in1 to in5 */
1497                revision = adt7475_read(REG_DEVID2) & 0x03;
1498                if (revision == 0x03)
1499                        revision += adt7475_read(REG_DEVREV2);
1500                break;
1501        default:
1502                data->has_voltage = 0x06;       /* in1, in2 */
1503                revision = adt7475_read(REG_DEVID2) & 0x07;
1504        }
1505
1506        config3 = adt7475_read(REG_CONFIG3);
1507        /* Pin PWM2 may alternatively be used for ALERT output */
1508        if (!(config3 & CONFIG3_SMBALERT))
1509                data->has_pwm2 = 1;
1510        /* Meaning of this bit is inverted for the ADT7473-1 */
1511        if (id->driver_data == adt7473 && revision >= 1)
1512                data->has_pwm2 = !data->has_pwm2;
1513
1514        data->config4 = adt7475_read(REG_CONFIG4);
1515        /* Pin TACH4 may alternatively be used for THERM */
1516        if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1517                data->has_fan4 = 1;
1518
1519        /*
1520         * THERM configuration is more complex on the ADT7476 and ADT7490,
1521         * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1522         * this function
1523         */
1524        if (id->driver_data == adt7490) {
1525                if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1526                    !(config3 & CONFIG3_THERM))
1527                        data->has_fan4 = 1;
1528        }
1529        if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1530                if (!(config3 & CONFIG3_THERM) ||
1531                    (data->config4 & CONFIG4_PINFUNC) == 0x1)
1532                        data->has_voltage |= (1 << 0);          /* in0 */
1533        }
1534
1535        /*
1536         * On the ADT7476, the +12V input pin may instead be used as VID5,
1537         * and VID pins may alternatively be used as GPIO
1538         */
1539        if (id->driver_data == adt7476) {
1540                u8 vid = adt7475_read(REG_VID);
1541                if (!(vid & VID_VIDSEL))
1542                        data->has_voltage |= (1 << 4);          /* in4 */
1543
1544                data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1545        }
1546
1547        /* Voltage attenuators can be bypassed, globally or individually */
1548        config2 = adt7475_read(REG_CONFIG2);
1549        if (config2 & CONFIG2_ATTN) {
1550                data->bypass_attn = (0x3 << 3) | 0x3;
1551        } else {
1552                data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1553                                    ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1554        }
1555        data->bypass_attn &= data->has_voltage;
1556
1557        /*
1558         * Call adt7475_read_pwm for all pwm's as this will reprogram any
1559         * pwm's which are disabled to manual mode with 0% duty cycle
1560         */
1561        for (i = 0; i < ADT7475_PWM_COUNT; i++)
1562                adt7475_read_pwm(client, i);
1563
1564        /* Start monitoring */
1565        switch (chip) {
1566        case adt7475:
1567        case adt7476:
1568                i2c_smbus_write_byte_data(client, REG_CONFIG1,
1569                                          adt7475_read(REG_CONFIG1) | 0x01);
1570                break;
1571        default:
1572                break;
1573        }
1574
1575        data->groups[group_num++] = &adt7475_attr_group;
1576
1577        /* Features that can be disabled individually */
1578        if (data->has_fan4) {
1579                data->groups[group_num++] = &fan4_attr_group;
1580        }
1581        if (data->has_pwm2) {
1582                data->groups[group_num++] = &pwm2_attr_group;
1583        }
1584        if (data->has_voltage & (1 << 0)) {
1585                data->groups[group_num++] = &in0_attr_group;
1586        }
1587        if (data->has_voltage & (1 << 3)) {
1588                data->groups[group_num++] = &in3_attr_group;
1589        }
1590        if (data->has_voltage & (1 << 4)) {
1591                data->groups[group_num++] = &in4_attr_group;
1592        }
1593        if (data->has_voltage & (1 << 5)) {
1594                data->groups[group_num++] = &in5_attr_group;
1595        }
1596        if (data->has_vid) {
1597                data->vrm = vid_which_vrm();
1598                data->groups[group_num] = &vid_attr_group;
1599        }
1600
1601        /* register device with all the acquired attributes */
1602        hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
1603                                                           client->name, data,
1604                                                           data->groups);
1605
1606        if (IS_ERR(hwmon_dev)) {
1607                ret = PTR_ERR(hwmon_dev);
1608                return ret;
1609        }
1610
1611        dev_info(&client->dev, "%s device, revision %d\n",
1612                 names[id->driver_data], revision);
1613        if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1614                dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1615                         (data->has_voltage & (1 << 0)) ? " in0" : "",
1616                         (data->has_voltage & (1 << 4)) ? " in4" : "",
1617                         data->has_fan4 ? " fan4" : "",
1618                         data->has_pwm2 ? " pwm2" : "",
1619                         data->has_vid ? " vid" : "");
1620        if (data->bypass_attn)
1621                dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1622                         (data->bypass_attn & (1 << 0)) ? " in0" : "",
1623                         (data->bypass_attn & (1 << 1)) ? " in1" : "",
1624                         (data->bypass_attn & (1 << 3)) ? " in3" : "",
1625                         (data->bypass_attn & (1 << 4)) ? " in4" : "");
1626
1627        /* Limits and settings, should never change update more than once */
1628        ret = adt7475_update_limits(client);
1629        if (ret)
1630                return ret;
1631
1632        return 0;
1633}
1634
1635static struct i2c_driver adt7475_driver = {
1636        .class          = I2C_CLASS_HWMON,
1637        .driver = {
1638                .name   = "adt7475",
1639                .of_match_table = of_match_ptr(adt7475_of_match),
1640        },
1641        .probe          = adt7475_probe,
1642        .id_table       = adt7475_id,
1643        .detect         = adt7475_detect,
1644        .address_list   = normal_i2c,
1645};
1646
1647static void adt7475_read_hystersis(struct i2c_client *client)
1648{
1649        struct adt7475_data *data = i2c_get_clientdata(client);
1650
1651        data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1652        data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1653        data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1654}
1655
1656static void adt7475_read_pwm(struct i2c_client *client, int index)
1657{
1658        struct adt7475_data *data = i2c_get_clientdata(client);
1659        unsigned int v;
1660
1661        data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1662
1663        /*
1664         * Figure out the internal value for pwmctrl and pwmchan
1665         * based on the current settings
1666         */
1667        v = (data->pwm[CONTROL][index] >> 5) & 7;
1668
1669        if (v == 3)
1670                data->pwmctl[index] = 0;
1671        else if (v == 7)
1672                data->pwmctl[index] = 1;
1673        else if (v == 4) {
1674                /*
1675                 * The fan is disabled - we don't want to
1676                 * support that, so change to manual mode and
1677                 * set the duty cycle to 0 instead
1678                 */
1679                data->pwm[INPUT][index] = 0;
1680                data->pwm[CONTROL][index] &= ~0xE0;
1681                data->pwm[CONTROL][index] |= (7 << 5);
1682
1683                i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1684                                          data->pwm[INPUT][index]);
1685
1686                i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1687                                          data->pwm[CONTROL][index]);
1688
1689                data->pwmctl[index] = 1;
1690        } else {
1691                data->pwmctl[index] = 2;
1692
1693                switch (v) {
1694                case 0:
1695                        data->pwmchan[index] = 1;
1696                        break;
1697                case 1:
1698                        data->pwmchan[index] = 2;
1699                        break;
1700                case 2:
1701                        data->pwmchan[index] = 4;
1702                        break;
1703                case 5:
1704                        data->pwmchan[index] = 6;
1705                        break;
1706                case 6:
1707                        data->pwmchan[index] = 7;
1708                        break;
1709                }
1710        }
1711}
1712
1713static int adt7475_update_measure(struct device *dev)
1714{
1715        struct adt7475_data *data = dev_get_drvdata(dev);
1716        struct i2c_client *client = data->client;
1717        u16 ext;
1718        int i;
1719        int ret;
1720
1721        ret = adt7475_read(REG_STATUS2);
1722        if (ret < 0)
1723                return ret;
1724        data->alarms = ret << 8;
1725
1726        ret = adt7475_read(REG_STATUS1);
1727        if (ret < 0)
1728                return ret;
1729        data->alarms |= ret;
1730
1731        ret = adt7475_read(REG_EXTEND2);
1732        if (ret < 0)
1733                return ret;
1734
1735        ext = (ret << 8);
1736
1737        ret = adt7475_read(REG_EXTEND1);
1738        if (ret < 0)
1739                return ret;
1740
1741        ext |= ret;
1742
1743        for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1744                if (!(data->has_voltage & (1 << i)))
1745                        continue;
1746                ret = adt7475_read(VOLTAGE_REG(i));
1747                if (ret < 0)
1748                        return ret;
1749                data->voltage[INPUT][i] =
1750                        (ret << 2) |
1751                        ((ext >> (i * 2)) & 3);
1752        }
1753
1754        for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1755                ret = adt7475_read(TEMP_REG(i));
1756                if (ret < 0)
1757                        return ret;
1758                data->temp[INPUT][i] =
1759                        (ret << 2) |
1760                        ((ext >> ((i + 5) * 2)) & 3);
1761        }
1762
1763        if (data->has_voltage & (1 << 5)) {
1764                ret = adt7475_read(REG_STATUS4);
1765                if (ret < 0)
1766                        return ret;
1767                data->alarms |= ret << 24;
1768
1769                ret = adt7475_read(REG_EXTEND3);
1770                if (ret < 0)
1771                        return ret;
1772                ext = ret;
1773
1774                ret = adt7475_read(REG_VTT);
1775                if (ret < 0)
1776                        return ret;
1777                data->voltage[INPUT][5] = ret << 2 |
1778                        ((ext >> 4) & 3);
1779        }
1780
1781        for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1782                if (i == 3 && !data->has_fan4)
1783                        continue;
1784                ret = adt7475_read_word(client, TACH_REG(i));
1785                if (ret < 0)
1786                        return ret;
1787                data->tach[INPUT][i] = ret;
1788        }
1789
1790        /* Updated by hw when in auto mode */
1791        for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1792                if (i == 1 && !data->has_pwm2)
1793                        continue;
1794                ret = adt7475_read(PWM_REG(i));
1795                if (ret < 0)
1796                        return ret;
1797                data->pwm[INPUT][i] = ret;
1798        }
1799
1800        if (data->has_vid) {
1801                ret = adt7475_read(REG_VID);
1802                if (ret < 0)
1803                        return ret;
1804                data->vid = ret & 0x3f;
1805        }
1806
1807        return 0;
1808}
1809
1810static struct adt7475_data *adt7475_update_device(struct device *dev)
1811{
1812        struct adt7475_data *data = dev_get_drvdata(dev);
1813        int ret;
1814
1815        mutex_lock(&data->lock);
1816
1817        /* Measurement values update every 2 seconds */
1818        if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1819            !data->valid) {
1820                ret = adt7475_update_measure(dev);
1821                if (ret) {
1822                        data->valid = false;
1823                        mutex_unlock(&data->lock);
1824                        return ERR_PTR(ret);
1825                }
1826                data->measure_updated = jiffies;
1827                data->valid = true;
1828        }
1829
1830        mutex_unlock(&data->lock);
1831
1832        return data;
1833}
1834
1835module_i2c_driver(adt7475_driver);
1836
1837MODULE_AUTHOR("Advanced Micro Devices, Inc");
1838MODULE_DESCRIPTION("adt7475 driver");
1839MODULE_LICENSE("GPL");
1840