drivers/hwmon/w83795.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  w83795.c - Linux kernel driver for hardware monitoring
   4  *  Copyright (C) 2008 Nuvoton Technology Corp.
   5  *                Wei Song
   6  *  Copyright (C) 2010 Jean Delvare <jdelvare@suse.de>
   7  *
   8  *  Supports following chips:
   9  *
  10  *  Chip       #vin   #fanin #pwm #temp #dts wchipid  vendid  i2c  ISA
  11  *  w83795g     21     14     8     6     8    0x79   0x5ca3  yes   no
  12  *  w83795adg   18     14     2     6     8    0x79   0x5ca3  yes   no
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/module.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/err.h>
  23 #include <linux/mutex.h>
  24 #include <linux/jiffies.h>
  25 #include <linux/util_macros.h>
  26
  27 /* Addresses to scan */
  28 static const unsigned short normal_i2c[] = {
  29         0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END
  30 };
  31
  32
  33 static bool reset;
  34 module_param(reset, bool, 0);
  35 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
  36
  37
  38 #define W83795_REG_BANKSEL              0x00
  39 #define W83795_REG_VENDORID             0xfd
  40 #define W83795_REG_CHIPID               0xfe
  41 #define W83795_REG_DEVICEID             0xfb
  42 #define W83795_REG_DEVICEID_A           0xff
  43
  44 #define W83795_REG_I2C_ADDR             0xfc
  45 #define W83795_REG_CONFIG               0x01
  46 #define W83795_REG_CONFIG_CONFIG48      0x04
  47 #define W83795_REG_CONFIG_START 0x01
  48
  49 /* Multi-Function Pin Ctrl Registers */
  50 #define W83795_REG_VOLT_CTRL1           0x02
  51 #define W83795_REG_VOLT_CTRL2           0x03
  52 #define W83795_REG_TEMP_CTRL1           0x04
  53 #define W83795_REG_TEMP_CTRL2           0x05
  54 #define W83795_REG_FANIN_CTRL1          0x06
  55 #define W83795_REG_FANIN_CTRL2          0x07
  56 #define W83795_REG_VMIGB_CTRL           0x08
  57
  58 #define TEMP_READ                       0
  59 #define TEMP_CRIT                       1
  60 #define TEMP_CRIT_HYST                  2
  61 #define TEMP_WARN                       3
  62 #define TEMP_WARN_HYST                  4
  63 /*
  64  * only crit and crit_hyst affect real-time alarm status
  65  * current crit crit_hyst warn warn_hyst
  66  */
  67 static const u16 W83795_REG_TEMP[][5] = {
  68         {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
  69         {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
  70         {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
  71         {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
  72         {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
  73         {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
  74 };
  75
  76 #define IN_READ                         0
  77 #define IN_MAX                          1
  78 #define IN_LOW                          2
  79 static const u16 W83795_REG_IN[][3] = {
  80         /* Current, HL, LL */
  81         {0x10, 0x70, 0x71},     /* VSEN1 */
  82         {0x11, 0x72, 0x73},     /* VSEN2 */
  83         {0x12, 0x74, 0x75},     /* VSEN3 */
  84         {0x13, 0x76, 0x77},     /* VSEN4 */
  85         {0x14, 0x78, 0x79},     /* VSEN5 */
  86         {0x15, 0x7a, 0x7b},     /* VSEN6 */
  87         {0x16, 0x7c, 0x7d},     /* VSEN7 */
  88         {0x17, 0x7e, 0x7f},     /* VSEN8 */
  89         {0x18, 0x80, 0x81},     /* VSEN9 */
  90         {0x19, 0x82, 0x83},     /* VSEN10 */
  91         {0x1A, 0x84, 0x85},     /* VSEN11 */
  92         {0x1B, 0x86, 0x87},     /* VTT */
  93         {0x1C, 0x88, 0x89},     /* 3VDD */
  94         {0x1D, 0x8a, 0x8b},     /* 3VSB */
  95         {0x1E, 0x8c, 0x8d},     /* VBAT */
  96         {0x1F, 0xa6, 0xa7},     /* VSEN12 */
  97         {0x20, 0xaa, 0xab},     /* VSEN13 */
  98         {0x21, 0x96, 0x97},     /* VSEN14 */
  99         {0x22, 0x9a, 0x9b},     /* VSEN15 */
 100         {0x23, 0x9e, 0x9f},     /* VSEN16 */
 101         {0x24, 0xa2, 0xa3},     /* VSEN17 */
 102 };
 103 #define W83795_REG_VRLSB                0x3C
 104
 105 static const u8 W83795_REG_IN_HL_LSB[] = {
 106         0x8e,   /* VSEN1-4 */
 107         0x90,   /* VSEN5-8 */
 108         0x92,   /* VSEN9-11 */
 109         0x94,   /* VTT, 3VDD, 3VSB, 3VBAT */
 110         0xa8,   /* VSEN12 */
 111         0xac,   /* VSEN13 */
 112         0x98,   /* VSEN14 */
 113         0x9c,   /* VSEN15 */
 114         0xa0,   /* VSEN16 */
 115         0xa4,   /* VSEN17 */
 116 };
 117
 118 #define IN_LSB_REG(index, type) \
 119         (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
 120         : (W83795_REG_IN_HL_LSB[(index)] + 1))
 121
 122 #define IN_LSB_SHIFT                    0
 123 #define IN_LSB_IDX                      1
 124 static const u8 IN_LSB_SHIFT_IDX[][2] = {
 125         /* High/Low LSB shift, LSB No. */
 126         {0x00, 0x00},   /* VSEN1 */
 127         {0x02, 0x00},   /* VSEN2 */
 128         {0x04, 0x00},   /* VSEN3 */
 129         {0x06, 0x00},   /* VSEN4 */
 130         {0x00, 0x01},   /* VSEN5 */
 131         {0x02, 0x01},   /* VSEN6 */
 132         {0x04, 0x01},   /* VSEN7 */
 133         {0x06, 0x01},   /* VSEN8 */
 134         {0x00, 0x02},   /* VSEN9 */
 135         {0x02, 0x02},   /* VSEN10 */
 136         {0x04, 0x02},   /* VSEN11 */
 137         {0x00, 0x03},   /* VTT */
 138         {0x02, 0x03},   /* 3VDD */
 139         {0x04, 0x03},   /* 3VSB */
 140         {0x06, 0x03},   /* VBAT */
 141         {0x06, 0x04},   /* VSEN12 */
 142         {0x06, 0x05},   /* VSEN13 */
 143         {0x06, 0x06},   /* VSEN14 */
 144         {0x06, 0x07},   /* VSEN15 */
 145         {0x06, 0x08},   /* VSEN16 */
 146         {0x06, 0x09},   /* VSEN17 */
 147 };
 148
 149
 150 #define W83795_REG_FAN(index)           (0x2E + (index))
 151 #define W83795_REG_FAN_MIN_HL(index)    (0xB6 + (index))
 152 #define W83795_REG_FAN_MIN_LSB(index)   (0xC4 + (index) / 2)
 153 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
 154         (((index) & 1) ? 4 : 0)
 155
 156 #define W83795_REG_VID_CTRL             0x6A
 157
 158 #define W83795_REG_ALARM_CTRL           0x40
 159 #define ALARM_CTRL_RTSACS               (1 << 7)
 160 #define W83795_REG_ALARM(index)         (0x41 + (index))
 161 #define W83795_REG_CLR_CHASSIS          0x4D
 162 #define W83795_REG_BEEP(index)          (0x50 + (index))
 163
 164 #define W83795_REG_OVT_CFG              0x58
 165 #define OVT_CFG_SEL                     (1 << 7)
 166
 167
 168 #define W83795_REG_FCMS1                0x201
 169 #define W83795_REG_FCMS2                0x208
 170 #define W83795_REG_TFMR(index)          (0x202 + (index))
 171 #define W83795_REG_FOMC                 0x20F
 172
 173 #define W83795_REG_TSS(index)           (0x209 + (index))
 174
 175 #define TSS_MAP_RESERVED                0xff
 176 static const u8 tss_map[4][6] = {
 177         { 0,  1,  2,  3,  4,  5},
 178         { 6,  7,  8,  9,  0,  1},
 179         {10, 11, 12, 13,  2,  3},
 180         { 4,  5,  4,  5, TSS_MAP_RESERVED, TSS_MAP_RESERVED},
 181 };
 182
 183 #define PWM_OUTPUT                      0
 184 #define PWM_FREQ                        1
 185 #define PWM_START                       2
 186 #define PWM_NONSTOP                     3
 187 #define PWM_STOP_TIME                   4
 188 #define W83795_REG_PWM(index, nr)       (0x210 + (nr) * 8 + (index))
 189
 190 #define W83795_REG_FTSH(index)          (0x240 + (index) * 2)
 191 #define W83795_REG_FTSL(index)          (0x241 + (index) * 2)
 192 #define W83795_REG_TFTS                 0x250
 193
 194 #define TEMP_PWM_TTTI                   0
 195 #define TEMP_PWM_CTFS                   1
 196 #define TEMP_PWM_HCT                    2
 197 #define TEMP_PWM_HOT                    3
 198 #define W83795_REG_TTTI(index)          (0x260 + (index))
 199 #define W83795_REG_CTFS(index)          (0x268 + (index))
 200 #define W83795_REG_HT(index)            (0x270 + (index))
 201
 202 #define SF4_TEMP                        0
 203 #define SF4_PWM                         1
 204 #define W83795_REG_SF4_TEMP(temp_num, index) \
 205         (0x280 + 0x10 * (temp_num) + (index))
 206 #define W83795_REG_SF4_PWM(temp_num, index) \
 207         (0x288 + 0x10 * (temp_num) + (index))
 208
 209 #define W83795_REG_DTSC                 0x301
 210 #define W83795_REG_DTSE                 0x302
 211 #define W83795_REG_DTS(index)           (0x26 + (index))
 212 #define W83795_REG_PECI_TBASE(index)    (0x320 + (index))
 213
 214 #define DTS_CRIT                        0
 215 #define DTS_CRIT_HYST                   1
 216 #define DTS_WARN                        2
 217 #define DTS_WARN_HYST                   3
 218 #define W83795_REG_DTS_EXT(index)       (0xB2 + (index))
 219
 220 #define SETUP_PWM_DEFAULT               0
 221 #define SETUP_PWM_UPTIME                1
 222 #define SETUP_PWM_DOWNTIME              2
 223 #define W83795_REG_SETUP_PWM(index)    (0x20C + (index))
 224
 225 static inline u16 in_from_reg(u8 index, u16 val)
 226 {
 227         /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */
 228         if (index >= 12 && index <= 14)
 229                 return val * 6;
 230         else
 231                 return val * 2;
 232 }
 233
 234 static inline u16 in_to_reg(u8 index, u16 val)
 235 {
 236         if (index >= 12 && index <= 14)
 237                 return val / 6;
 238         else
 239                 return val / 2;
 240 }
 241
 242 static inline unsigned long fan_from_reg(u16 val)
 243 {
 244         if ((val == 0xfff) || (val == 0))
 245                 return 0;
 246         return 1350000UL / val;
 247 }
 248
 249 static inline u16 fan_to_reg(long rpm)
 250 {
 251         if (rpm <= 0)
 252                 return 0x0fff;
 253         return clamp_val((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
 254 }
 255
 256 static inline unsigned long time_from_reg(u8 reg)
 257 {
 258         return reg * 100;
 259 }
 260
 261 static inline u8 time_to_reg(unsigned long val)
 262 {
 263         return clamp_val((val + 50) / 100, 0, 0xff);
 264 }
 265
 266 static inline long temp_from_reg(s8 reg)
 267 {
 268         return reg * 1000;
 269 }
 270
 271 static inline s8 temp_to_reg(long val, s8 min, s8 max)
 272 {
 273         return clamp_val(val / 1000, min, max);
 274 }
 275
 276 static const u16 pwm_freq_cksel0[16] = {
 277         1024, 512, 341, 256, 205, 171, 146, 128,
 278         85, 64, 32, 16, 8, 4, 2, 1
 279 };
 280
 281 static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin)
 282 {
 283         unsigned long base_clock;
 284
 285         if (reg & 0x80) {
 286                 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
 287                 return base_clock / ((reg & 0x7f) + 1);
 288         } else
 289                 return pwm_freq_cksel0[reg & 0x0f];
 290 }
 291
 292 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
 293 {
 294         unsigned long base_clock;
 295         u8 reg0, reg1;
 296         unsigned long best0, best1;
 297
 298         /* Best fit for cksel = 0 */
 299         reg0 = find_closest_descending(val, pwm_freq_cksel0,
 300                                        ARRAY_SIZE(pwm_freq_cksel0));
 301         if (val < 375)  /* cksel = 1 can't beat this */
 302                 return reg0;
 303         best0 = pwm_freq_cksel0[reg0];
 304
 305         /* Best fit for cksel = 1 */
 306         base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
 307         reg1 = clamp_val(DIV_ROUND_CLOSEST(base_clock, val), 1, 128);
 308         best1 = base_clock / reg1;
 309         reg1 = 0x80 | (reg1 - 1);
 310
 311         /* Choose the closest one */
 312         if (abs(val - best0) > abs(val - best1))
 313                 return reg1;
 314         else
 315                 return reg0;
 316 }
 317
 318 enum chip_types {w83795g, w83795adg};
 319
 320 struct w83795_data {
 321         struct device *hwmon_dev;
 322         struct mutex update_lock;
 323         unsigned long last_updated;     /* In jiffies */
 324         enum chip_types chip_type;
 325
 326         u8 bank;
 327
 328         u32 has_in;             /* Enable monitor VIN or not */
 329         u8 has_dyn_in;          /* Only in2-0 can have this */
 330         u16 in[21][3];          /* Register value, read/high/low */
 331         u8 in_lsb[10][3];       /* LSB Register value, high/low */
 332         u8 has_gain;            /* has gain: in17-20 * 8 */
 333
 334         u16 has_fan;            /* Enable fan14-1 or not */
 335         u16 fan[14];            /* Register value combine */
 336         u16 fan_min[14];        /* Register value combine */
 337
 338         u8 has_temp;            /* Enable monitor temp6-1 or not */
 339         s8 temp[6][5];          /* current, crit, crit_hyst, warn, warn_hyst */
 340         u8 temp_read_vrlsb[6];
 341         u8 temp_mode;           /* Bit vector, 0 = TR, 1 = TD */
 342         u8 temp_src[3];         /* Register value */
 343
 344         u8 enable_dts;          /*
 345                                  * Enable PECI and SB-TSI,
 346                                  * bit 0: =1 enable, =0 disable,
 347                                  * bit 1: =1 AMD SB-TSI, =0 Intel PECI
 348                                  */
 349         u8 has_dts;             /* Enable monitor DTS temp */
 350         s8 dts[8];              /* Register value */
 351         u8 dts_read_vrlsb[8];   /* Register value */
 352         s8 dts_ext[4];          /* Register value */
 353
 354         u8 has_pwm;             /*
 355                                  * 795g supports 8 pwm, 795adg only supports 2,
 356                                  * no config register, only affected by chip
 357                                  * type
 358                                  */
 359         u8 pwm[8][5];           /*
 360                                  * Register value, output, freq, start,
 361                                  *  non stop, stop time
 362                                  */
 363         u16 clkin;              /* CLKIN frequency in kHz */
 364         u8 pwm_fcms[2];         /* Register value */
 365         u8 pwm_tfmr[6];         /* Register value */
 366         u8 pwm_fomc;            /* Register value */
 367
 368         u16 target_speed[8];    /*
 369                                  * Register value, target speed for speed
 370                                  * cruise
 371                                  */
 372         u8 tol_speed;           /* tolerance of target speed */
 373         u8 pwm_temp[6][4];      /* TTTI, CTFS, HCT, HOT */
 374         u8 sf4_reg[6][2][7];    /* 6 temp, temp/dcpwm, 7 registers */
 375
 376         u8 setup_pwm[3];        /* Register value */
 377
 378         u8 alarms[6];           /* Register value */
 379         u8 enable_beep;
 380         u8 beeps[6];            /* Register value */
 381
 382         char valid;
 383         char valid_limits;
 384         char valid_pwm_config;
 385 };
 386
 387 /*
 388  * Hardware access
 389  * We assume that nobdody can change the bank outside the driver.
 390  */
 391
 392 /* Must be called with data->update_lock held, except during initialization */
 393 static int w83795_set_bank(struct i2c_client *client, u8 bank)
 394 {
 395         struct w83795_data *data = i2c_get_clientdata(client);
 396         int err;
 397
 398         /* If the same bank is already set, nothing to do */
 399         if ((data->bank & 0x07) == bank)
 400                 return 0;
 401
 402         /* Change to new bank, preserve all other bits */
 403         bank |= data->bank & ~0x07;
 404         err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank);
 405         if (err < 0) {
 406                 dev_err(&client->dev,
 407                         "Failed to set bank to %d, err %d\n",
 408                         (int)bank, err);
 409                 return err;
 410         }
 411         data->bank = bank;
 412
 413         return 0;
 414 }
 415
 416 /* Must be called with data->update_lock held, except during initialization */
 417 static u8 w83795_read(struct i2c_client *client, u16 reg)
 418 {
 419         int err;
 420
 421         err = w83795_set_bank(client, reg >> 8);
 422         if (err < 0)
 423                 return 0x00;    /* Arbitrary */
 424
 425         err = i2c_smbus_read_byte_data(client, reg & 0xff);
 426         if (err < 0) {
 427                 dev_err(&client->dev,
 428                         "Failed to read from register 0x%03x, err %d\n",
 429                         (int)reg, err);
 430                 return 0x00;    /* Arbitrary */
 431         }
 432         return err;
 433 }
 434
 435 /* Must be called with data->update_lock held, except during initialization */
 436 static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
 437 {
 438         int err;
 439
 440         err = w83795_set_bank(client, reg >> 8);
 441         if (err < 0)
 442                 return err;
 443
 444         err = i2c_smbus_write_byte_data(client, reg & 0xff, value);
 445         if (err < 0)
 446                 dev_err(&client->dev,
 447                         "Failed to write to register 0x%03x, err %d\n",
 448                         (int)reg, err);
 449         return err;
 450 }
 451
 452 static void w83795_update_limits(struct i2c_client *client)
 453 {
 454         struct w83795_data *data = i2c_get_clientdata(client);
 455         int i, limit;
 456         u8 lsb;
 457
 458         /* Read the voltage limits */
 459         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
 460                 if (!(data->has_in & (1 << i)))
 461                         continue;
 462                 data->in[i][IN_MAX] =
 463                         w83795_read(client, W83795_REG_IN[i][IN_MAX]);
 464                 data->in[i][IN_LOW] =
 465                         w83795_read(client, W83795_REG_IN[i][IN_LOW]);
 466         }
 467         for (i = 0; i < ARRAY_SIZE(data->in_lsb); i++) {
 468                 if ((i == 2 && data->chip_type == w83795adg) ||
 469                     (i >= 4 && !(data->has_in & (1 << (i + 11)))))
 470                         continue;
 471                 data->in_lsb[i][IN_MAX] =
 472                         w83795_read(client, IN_LSB_REG(i, IN_MAX));
 473                 data->in_lsb[i][IN_LOW] =
 474                         w83795_read(client, IN_LSB_REG(i, IN_LOW));
 475         }
 476
 477         /* Read the fan limits */
 478         lsb = 0; /* Silent false gcc warning */
 479         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
 480                 /*
 481                  * Each register contains LSB for 2 fans, but we want to
 482                  * read it only once to save time
 483                  */
 484                 if ((i & 1) == 0 && (data->has_fan & (3 << i)))
 485                         lsb = w83795_read(client, W83795_REG_FAN_MIN_LSB(i));
 486
 487                 if (!(data->has_fan & (1 << i)))
 488                         continue;
 489                 data->fan_min[i] =
 490                         w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
 491                 data->fan_min[i] |=
 492                         (lsb >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F;
 493         }
 494
 495         /* Read the temperature limits */
 496         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
 497                 if (!(data->has_temp & (1 << i)))
 498                         continue;
 499                 for (limit = TEMP_CRIT; limit <= TEMP_WARN_HYST; limit++)
 500                         data->temp[i][limit] =
 501                                 w83795_read(client, W83795_REG_TEMP[i][limit]);
 502         }
 503
 504         /* Read the DTS limits */
 505         if (data->enable_dts) {
 506                 for (limit = DTS_CRIT; limit <= DTS_WARN_HYST; limit++)
 507                         data->dts_ext[limit] =
 508                                 w83795_read(client, W83795_REG_DTS_EXT(limit));
 509         }
 510
 511         /* Read beep settings */
 512         if (data->enable_beep) {
 513                 for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
 514                         data->beeps[i] =
 515                                 w83795_read(client, W83795_REG_BEEP(i));
 516         }
 517
 518         data->valid_limits = 1;
 519 }
 520
 521 static struct w83795_data *w83795_update_pwm_config(struct device *dev)
 522 {
 523         struct i2c_client *client = to_i2c_client(dev);
 524         struct w83795_data *data = i2c_get_clientdata(client);
 525         int i, tmp;
 526
 527         mutex_lock(&data->update_lock);
 528
 529         if (data->valid_pwm_config)
 530                 goto END;
 531
 532         /* Read temperature source selection */
 533         for (i = 0; i < ARRAY_SIZE(data->temp_src); i++)
 534                 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
 535
 536         /* Read automatic fan speed control settings */
 537         data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
 538         data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
 539         for (i = 0; i < ARRAY_SIZE(data->pwm_tfmr); i++)
 540                 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
 541         data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
 542         for (i = 0; i < data->has_pwm; i++) {
 543                 for (tmp = PWM_FREQ; tmp <= PWM_STOP_TIME; tmp++)
 544                         data->pwm[i][tmp] =
 545                                 w83795_read(client, W83795_REG_PWM(i, tmp));
 546         }
 547         for (i = 0; i < ARRAY_SIZE(data->target_speed); i++) {
 548                 data->target_speed[i] =
 549                         w83795_read(client, W83795_REG_FTSH(i)) << 4;
 550                 data->target_speed[i] |=
 551                         w83795_read(client, W83795_REG_FTSL(i)) >> 4;
 552         }
 553         data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
 554
 555         for (i = 0; i < ARRAY_SIZE(data->pwm_temp); i++) {
 556                 data->pwm_temp[i][TEMP_PWM_TTTI] =
 557                         w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
 558                 data->pwm_temp[i][TEMP_PWM_CTFS] =
 559                         w83795_read(client, W83795_REG_CTFS(i));
 560                 tmp = w83795_read(client, W83795_REG_HT(i));
 561                 data->pwm_temp[i][TEMP_PWM_HCT] = tmp >> 4;
 562                 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
 563         }
 564
 565         /* Read SmartFanIV trip points */
 566         for (i = 0; i < ARRAY_SIZE(data->sf4_reg); i++) {
 567                 for (tmp = 0; tmp < 7; tmp++) {
 568                         data->sf4_reg[i][SF4_TEMP][tmp] =
 569                                 w83795_read(client,
 570                                             W83795_REG_SF4_TEMP(i, tmp));
 571                         data->sf4_reg[i][SF4_PWM][tmp] =
 572                                 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
 573                 }
 574         }
 575
 576         /* Read setup PWM */
 577         for (i = 0; i < ARRAY_SIZE(data->setup_pwm); i++)
 578                 data->setup_pwm[i] =
 579                         w83795_read(client, W83795_REG_SETUP_PWM(i));
 580
 581         data->valid_pwm_config = 1;
 582
 583 END:
 584         mutex_unlock(&data->update_lock);
 585         return data;
 586 }
 587
 588 static struct w83795_data *w83795_update_device(struct device *dev)
 589 {
 590         struct i2c_client *client = to_i2c_client(dev);
 591         struct w83795_data *data = i2c_get_clientdata(client);
 592         u16 tmp;
 593         u8 intrusion;
 594         int i;
 595
 596         mutex_lock(&data->update_lock);
 597
 598         if (!data->valid_limits)
 599                 w83795_update_limits(client);
 600
 601         if (!(time_after(jiffies, data->last_updated + HZ * 2)
 602               || !data->valid))
 603                 goto END;
 604
 605         /* Update the voltages value */
 606         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
 607                 if (!(data->has_in & (1 << i)))
 608                         continue;
 609                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
 610                 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
 611                 data->in[i][IN_READ] = tmp;
 612         }
 613
 614         /* in0-2 can have dynamic limits (W83795G only) */
 615         if (data->has_dyn_in) {
 616                 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX));
 617                 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW));
 618
 619                 for (i = 0; i < 3; i++) {
 620                         if (!(data->has_dyn_in & (1 << i)))
 621                                 continue;
 622                         data->in[i][IN_MAX] =
 623                                 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
 624                         data->in[i][IN_LOW] =
 625                                 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
 626                         data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03;
 627                         data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03;
 628                 }
 629         }
 630
 631         /* Update fan */
 632         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
 633                 if (!(data->has_fan & (1 << i)))
 634                         continue;
 635                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
 636                 data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4;
 637         }
 638
 639         /* Update temperature */
 640         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
 641                 data->temp[i][TEMP_READ] =
 642                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
 643                 data->temp_read_vrlsb[i] =
 644                         w83795_read(client, W83795_REG_VRLSB);
 645         }
 646
 647         /* Update dts temperature */
 648         if (data->enable_dts) {
 649                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
 650                         if (!(data->has_dts & (1 << i)))
 651                                 continue;
 652                         data->dts[i] =
 653                                 w83795_read(client, W83795_REG_DTS(i));
 654                         data->dts_read_vrlsb[i] =
 655                                 w83795_read(client, W83795_REG_VRLSB);
 656                 }
 657         }
 658
 659         /* Update pwm output */
 660         for (i = 0; i < data->has_pwm; i++) {
 661                 data->pwm[i][PWM_OUTPUT] =
 662                     w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
 663         }
 664
 665         /*
 666          * Update intrusion and alarms
 667          * It is important to read intrusion first, because reading from
 668          * register SMI STS6 clears the interrupt status temporarily.
 669          */
 670         tmp = w83795_read(client, W83795_REG_ALARM_CTRL);
 671         /* Switch to interrupt status for intrusion if needed */
 672         if (tmp & ALARM_CTRL_RTSACS)
 673                 w83795_write(client, W83795_REG_ALARM_CTRL,
 674                              tmp & ~ALARM_CTRL_RTSACS);
 675         intrusion = w83795_read(client, W83795_REG_ALARM(5)) & (1 << 6);
 676         /* Switch to real-time alarms */
 677         w83795_write(client, W83795_REG_ALARM_CTRL, tmp | ALARM_CTRL_RTSACS);
 678         for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
 679                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
 680         data->alarms[5] |= intrusion;
 681         /* Restore original configuration if needed */
 682         if (!(tmp & ALARM_CTRL_RTSACS))
 683                 w83795_write(client, W83795_REG_ALARM_CTRL,
 684                              tmp & ~ALARM_CTRL_RTSACS);
 685
 686         data->last_updated = jiffies;
 687         data->valid = 1;
 688
 689 END:
 690         mutex_unlock(&data->update_lock);
 691         return data;
 692 }
 693
 694 /*
 695  * Sysfs attributes
 696  */
 697
 698 #define ALARM_STATUS      0
 699 #define BEEP_ENABLE       1
 700 static ssize_t
 701 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
 702 {
 703         struct w83795_data *data = w83795_update_device(dev);
 704         struct sensor_device_attribute_2 *sensor_attr =
 705             to_sensor_dev_attr_2(attr);
 706         int nr = sensor_attr->nr;
 707         int index = sensor_attr->index >> 3;
 708         int bit = sensor_attr->index & 0x07;
 709         u8 val;
 710
 711         if (nr == ALARM_STATUS)
 712                 val = (data->alarms[index] >> bit) & 1;
 713         else            /* BEEP_ENABLE */
 714                 val = (data->beeps[index] >> bit) & 1;
 715
 716         return sprintf(buf, "%u\n", val);
 717 }
 718
 719 static ssize_t
 720 store_beep(struct device *dev, struct device_attribute *attr,
 721            const char *buf, size_t count)
 722 {
 723         struct i2c_client *client = to_i2c_client(dev);
 724         struct w83795_data *data = i2c_get_clientdata(client);
 725         struct sensor_device_attribute_2 *sensor_attr =
 726             to_sensor_dev_attr_2(attr);
 727         int index = sensor_attr->index >> 3;
 728         int shift = sensor_attr->index & 0x07;
 729         u8 beep_bit = 1 << shift;
 730         unsigned long val;
 731
 732         if (kstrtoul(buf, 10, &val) < 0)
 733                 return -EINVAL;
 734         if (val != 0 && val != 1)
 735                 return -EINVAL;
 736
 737         mutex_lock(&data->update_lock);
 738         data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
 739         data->beeps[index] &= ~beep_bit;
 740         data->beeps[index] |= val << shift;
 741         w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
 742         mutex_unlock(&data->update_lock);
 743
 744         return count;
 745 }
 746
 747 /* Write 0 to clear chassis alarm */
 748 static ssize_t
 749 store_chassis_clear(struct device *dev,
 750                     struct device_attribute *attr, const char *buf,
 751                     size_t count)
 752 {
 753         struct i2c_client *client = to_i2c_client(dev);
 754         struct w83795_data *data = i2c_get_clientdata(client);
 755         unsigned long val;
 756
 757         if (kstrtoul(buf, 10, &val) < 0 || val != 0)
 758                 return -EINVAL;
 759
 760         mutex_lock(&data->update_lock);
 761         val = w83795_read(client, W83795_REG_CLR_CHASSIS);
 762         val |= 0x80;
 763         w83795_write(client, W83795_REG_CLR_CHASSIS, val);
 764
 765         /* Clear status and force cache refresh */
 766         w83795_read(client, W83795_REG_ALARM(5));
 767         data->valid = 0;
 768         mutex_unlock(&data->update_lock);
 769         return count;
 770 }
 771
 772 #define FAN_INPUT     0
 773 #define FAN_MIN       1
 774 static ssize_t
 775 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
 776 {
 777         struct sensor_device_attribute_2 *sensor_attr =
 778             to_sensor_dev_attr_2(attr);
 779         int nr = sensor_attr->nr;
 780         int index = sensor_attr->index;
 781         struct w83795_data *data = w83795_update_device(dev);
 782         u16 val;
 783
 784         if (nr == FAN_INPUT)
 785                 val = data->fan[index] & 0x0fff;
 786         else
 787                 val = data->fan_min[index] & 0x0fff;
 788
 789         return sprintf(buf, "%lu\n", fan_from_reg(val));
 790 }
 791
 792 static ssize_t
 793 store_fan_min(struct device *dev, struct device_attribute *attr,
 794               const char *buf, size_t count)
 795 {
 796         struct sensor_device_attribute_2 *sensor_attr =
 797             to_sensor_dev_attr_2(attr);
 798         int index = sensor_attr->index;
 799         struct i2c_client *client = to_i2c_client(dev);
 800         struct w83795_data *data = i2c_get_clientdata(client);
 801         unsigned long val;
 802
 803         if (kstrtoul(buf, 10, &val))
 804                 return -EINVAL;
 805         val = fan_to_reg(val);
 806
 807         mutex_lock(&data->update_lock);
 808         data->fan_min[index] = val;
 809         w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
 810         val &= 0x0f;
 811         if (index & 1) {
 812                 val <<= 4;
 813                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 814                        & 0x0f;
 815         } else {
 816                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 817                        & 0xf0;
 818         }
 819         w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
 820         mutex_unlock(&data->update_lock);
 821
 822         return count;
 823 }
 824
 825 static ssize_t
 826 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 827 {
 828         struct w83795_data *data;
 829         struct sensor_device_attribute_2 *sensor_attr =
 830             to_sensor_dev_attr_2(attr);
 831         int nr = sensor_attr->nr;
 832         int index = sensor_attr->index;
 833         unsigned int val;
 834
 835         data = nr == PWM_OUTPUT ? w83795_update_device(dev)
 836                                 : w83795_update_pwm_config(dev);
 837
 838         switch (nr) {
 839         case PWM_STOP_TIME:
 840                 val = time_from_reg(data->pwm[index][nr]);
 841                 break;
 842         case PWM_FREQ:
 843                 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin);
 844                 break;
 845         default:
 846                 val = data->pwm[index][nr];
 847                 break;
 848         }
 849
 850         return sprintf(buf, "%u\n", val);
 851 }
 852
 853 static ssize_t
 854 store_pwm(struct device *dev, struct device_attribute *attr,
 855           const char *buf, size_t count)
 856 {
 857         struct i2c_client *client = to_i2c_client(dev);
 858         struct w83795_data *data = i2c_get_clientdata(client);
 859         struct sensor_device_attribute_2 *sensor_attr =
 860             to_sensor_dev_attr_2(attr);
 861         int nr = sensor_attr->nr;
 862         int index = sensor_attr->index;
 863         unsigned long val;
 864
 865         if (kstrtoul(buf, 10, &val) < 0)
 866                 return -EINVAL;
 867
 868         mutex_lock(&data->update_lock);
 869         switch (nr) {
 870         case PWM_STOP_TIME:
 871                 val = time_to_reg(val);
 872                 break;
 873         case PWM_FREQ:
 874                 val = pwm_freq_to_reg(val, data->clkin);
 875                 break;
 876         default:
 877                 val = clamp_val(val, 0, 0xff);
 878                 break;
 879         }
 880         w83795_write(client, W83795_REG_PWM(index, nr), val);
 881         data->pwm[index][nr] = val;
 882         mutex_unlock(&data->update_lock);
 883         return count;
 884 }
 885
 886 static ssize_t
 887 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
 888 {
 889         struct sensor_device_attribute_2 *sensor_attr =
 890             to_sensor_dev_attr_2(attr);
 891         struct w83795_data *data = w83795_update_pwm_config(dev);
 892         int index = sensor_attr->index;
 893         u8 tmp;
 894
 895         /* Speed cruise mode */
 896         if (data->pwm_fcms[0] & (1 << index)) {
 897                 tmp = 2;
 898                 goto out;
 899         }
 900         /* Thermal cruise or SmartFan IV mode */
 901         for (tmp = 0; tmp < 6; tmp++) {
 902                 if (data->pwm_tfmr[tmp] & (1 << index)) {
 903                         tmp = 3;
 904                         goto out;
 905                 }
 906         }
 907         /* Manual mode */
 908         tmp = 1;
 909
 910 out:
 911         return sprintf(buf, "%u\n", tmp);
 912 }
 913
 914 static ssize_t
 915 store_pwm_enable(struct device *dev, struct device_attribute *attr,
 916           const char *buf, size_t count)
 917 {
 918         struct i2c_client *client = to_i2c_client(dev);
 919         struct w83795_data *data = w83795_update_pwm_config(dev);
 920         struct sensor_device_attribute_2 *sensor_attr =
 921             to_sensor_dev_attr_2(attr);
 922         int index = sensor_attr->index;
 923         unsigned long val;
 924         int i;
 925
 926         if (kstrtoul(buf, 10, &val) < 0)
 927                 return -EINVAL;
 928         if (val < 1 || val > 2)
 929                 return -EINVAL;
 930
 931 #ifndef CONFIG_SENSORS_W83795_FANCTRL
 932         if (val > 1) {
 933                 dev_warn(dev, "Automatic fan speed control support disabled\n");
 934                 dev_warn(dev, "Build with CONFIG_SENSORS_W83795_FANCTRL=y if you want it\n");
 935                 return -EOPNOTSUPP;
 936         }
 937 #endif
 938
 939         mutex_lock(&data->update_lock);
 940         switch (val) {
 941         case 1:
 942                 /* Clear speed cruise mode bits */
 943                 data->pwm_fcms[0] &= ~(1 << index);
 944                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 945                 /* Clear thermal cruise mode bits */
 946                 for (i = 0; i < 6; i++) {
 947                         data->pwm_tfmr[i] &= ~(1 << index);
 948                         w83795_write(client, W83795_REG_TFMR(i),
 949                                 data->pwm_tfmr[i]);
 950                 }
 951                 break;
 952         case 2:
 953                 data->pwm_fcms[0] |= (1 << index);
 954                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 955                 break;
 956         }
 957         mutex_unlock(&data->update_lock);
 958         return count;
 959 }
 960
 961 static ssize_t
 962 show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf)
 963 {
 964         struct w83795_data *data = w83795_update_pwm_config(dev);
 965         int index = to_sensor_dev_attr_2(attr)->index;
 966         unsigned int mode;
 967
 968         if (data->pwm_fomc & (1 << index))
 969                 mode = 0;       /* DC */
 970         else
 971                 mode = 1;       /* PWM */
 972
 973         return sprintf(buf, "%u\n", mode);
 974 }
 975
 976 /*
 977  * Check whether a given temperature source can ever be useful.
 978  * Returns the number of selectable temperature channels which are
 979  * enabled.
 980  */
 981 static int w83795_tss_useful(const struct w83795_data *data, int tsrc)
 982 {
 983         int useful = 0, i;
 984
 985         for (i = 0; i < 4; i++) {
 986                 if (tss_map[i][tsrc] == TSS_MAP_RESERVED)
 987                         continue;
 988                 if (tss_map[i][tsrc] < 6)       /* Analog */
 989                         useful += (data->has_temp >> tss_map[i][tsrc]) & 1;
 990                 else                            /* Digital */
 991                         useful += (data->has_dts >> (tss_map[i][tsrc] - 6)) & 1;
 992         }
 993
 994         return useful;
 995 }
 996
 997 static ssize_t
 998 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
 999 {
1000         struct sensor_device_attribute_2 *sensor_attr =
1001             to_sensor_dev_attr_2(attr);
1002         struct w83795_data *data = w83795_update_pwm_config(dev);
1003         int index = sensor_attr->index;
1004         u8 tmp = data->temp_src[index / 2];
1005
1006         if (index & 1)
1007                 tmp >>= 4;      /* Pick high nibble */
1008         else
1009                 tmp &= 0x0f;    /* Pick low nibble */
1010
1011         /* Look-up the actual temperature channel number */
1012         if (tmp >= 4 || tss_map[tmp][index] == TSS_MAP_RESERVED)
1013                 return -EINVAL;         /* Shouldn't happen */
1014
1015         return sprintf(buf, "%u\n", (unsigned int)tss_map[tmp][index] + 1);
1016 }
1017
1018 static ssize_t
1019 store_temp_src(struct device *dev, struct device_attribute *attr,
1020           const char *buf, size_t count)
1021 {
1022         struct i2c_client *client = to_i2c_client(dev);
1023         struct w83795_data *data = w83795_update_pwm_config(dev);
1024         struct sensor_device_attribute_2 *sensor_attr =
1025             to_sensor_dev_attr_2(attr);
1026         int index = sensor_attr->index;
1027         int tmp;
1028         unsigned long channel;
1029         u8 val = index / 2;
1030
1031         if (kstrtoul(buf, 10, &channel) < 0 ||
1032             channel < 1 || channel > 14)
1033                 return -EINVAL;
1034
1035         /* Check if request can be fulfilled */
1036         for (tmp = 0; tmp < 4; tmp++) {
1037                 if (tss_map[tmp][index] == channel - 1)
1038                         break;
1039         }
1040         if (tmp == 4)   /* No match */
1041                 return -EINVAL;
1042
1043         mutex_lock(&data->update_lock);
1044         if (index & 1) {
1045                 tmp <<= 4;
1046                 data->temp_src[val] &= 0x0f;
1047         } else {
1048                 data->temp_src[val] &= 0xf0;
1049         }
1050         data->temp_src[val] |= tmp;
1051         w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
1052         mutex_unlock(&data->update_lock);
1053
1054         return count;
1055 }
1056
1057 #define TEMP_PWM_ENABLE   0
1058 #define TEMP_PWM_FAN_MAP  1
1059 static ssize_t
1060 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
1061                      char *buf)
1062 {
1063         struct w83795_data *data = w83795_update_pwm_config(dev);
1064         struct sensor_device_attribute_2 *sensor_attr =
1065             to_sensor_dev_attr_2(attr);
1066         int nr = sensor_attr->nr;
1067         int index = sensor_attr->index;
1068         u8 tmp = 0xff;
1069
1070         switch (nr) {
1071         case TEMP_PWM_ENABLE:
1072                 tmp = (data->pwm_fcms[1] >> index) & 1;
1073                 if (tmp)
1074                         tmp = 4;
1075                 else
1076                         tmp = 3;
1077                 break;
1078         case TEMP_PWM_FAN_MAP:
1079                 tmp = data->pwm_tfmr[index];
1080                 break;
1081         }
1082
1083         return sprintf(buf, "%u\n", tmp);
1084 }
1085
1086 static ssize_t
1087 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
1088           const char *buf, size_t count)
1089 {
1090         struct i2c_client *client = to_i2c_client(dev);
1091         struct w83795_data *data = w83795_update_pwm_config(dev);
1092         struct sensor_device_attribute_2 *sensor_attr =
1093             to_sensor_dev_attr_2(attr);
1094         int nr = sensor_attr->nr;
1095         int index = sensor_attr->index;
1096         unsigned long tmp;
1097
1098         if (kstrtoul(buf, 10, &tmp) < 0)
1099                 return -EINVAL;
1100
1101         switch (nr) {
1102         case TEMP_PWM_ENABLE:
1103                 if (tmp != 3 && tmp != 4)
1104                         return -EINVAL;
1105                 tmp -= 3;
1106                 mutex_lock(&data->update_lock);
1107                 data->pwm_fcms[1] &= ~(1 << index);
1108                 data->pwm_fcms[1] |= tmp << index;
1109                 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
1110                 mutex_unlock(&data->update_lock);
1111                 break;
1112         case TEMP_PWM_FAN_MAP:
1113                 mutex_lock(&data->update_lock);
1114                 tmp = clamp_val(tmp, 0, 0xff);
1115                 w83795_write(client, W83795_REG_TFMR(index), tmp);
1116                 data->pwm_tfmr[index] = tmp;
1117                 mutex_unlock(&data->update_lock);
1118                 break;
1119         }
1120         return count;
1121 }
1122
1123 #define FANIN_TARGET   0
1124 #define FANIN_TOL      1
1125 static ssize_t
1126 show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
1127 {
1128         struct w83795_data *data = w83795_update_pwm_config(dev);
1129         struct sensor_device_attribute_2 *sensor_attr =
1130             to_sensor_dev_attr_2(attr);
1131         int nr = sensor_attr->nr;
1132         int index = sensor_attr->index;
1133         u16 tmp = 0;
1134
1135         switch (nr) {
1136         case FANIN_TARGET:
1137                 tmp = fan_from_reg(data->target_speed[index]);
1138                 break;
1139         case FANIN_TOL:
1140                 tmp = data->tol_speed;
1141                 break;
1142         }
1143
1144         return sprintf(buf, "%u\n", tmp);
1145 }
1146
1147 static ssize_t
1148 store_fanin(struct device *dev, struct device_attribute *attr,
1149           const char *buf, size_t count)
1150 {
1151         struct i2c_client *client = to_i2c_client(dev);
1152         struct w83795_data *data = i2c_get_clientdata(client);
1153         struct sensor_device_attribute_2 *sensor_attr =
1154             to_sensor_dev_attr_2(attr);
1155         int nr = sensor_attr->nr;
1156         int index = sensor_attr->index;
1157         unsigned long val;
1158
1159         if (kstrtoul(buf, 10, &val) < 0)
1160                 return -EINVAL;
1161
1162         mutex_lock(&data->update_lock);
1163         switch (nr) {
1164         case FANIN_TARGET:
1165                 val = fan_to_reg(clamp_val(val, 0, 0xfff));
1166                 w83795_write(client, W83795_REG_FTSH(index), val >> 4);
1167                 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
1168                 data->target_speed[index] = val;
1169                 break;
1170         case FANIN_TOL:
1171                 val = clamp_val(val, 0, 0x3f);
1172                 w83795_write(client, W83795_REG_TFTS, val);
1173                 data->tol_speed = val;
1174                 break;
1175         }
1176         mutex_unlock(&data->update_lock);
1177
1178         return count;
1179 }
1180
1181
1182 static ssize_t
1183 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1184 {
1185         struct w83795_data *data = w83795_update_pwm_config(dev);
1186         struct sensor_device_attribute_2 *sensor_attr =
1187             to_sensor_dev_attr_2(attr);
1188         int nr = sensor_attr->nr;
1189         int index = sensor_attr->index;
1190         long tmp = temp_from_reg(data->pwm_temp[index][nr]);
1191
1192         return sprintf(buf, "%ld\n", tmp);
1193 }
1194
1195 static ssize_t
1196 store_temp_pwm(struct device *dev, struct device_attribute *attr,
1197           const char *buf, size_t count)
1198 {
1199         struct i2c_client *client = to_i2c_client(dev);
1200         struct w83795_data *data = i2c_get_clientdata(client);
1201         struct sensor_device_attribute_2 *sensor_attr =
1202             to_sensor_dev_attr_2(attr);
1203         int nr = sensor_attr->nr;
1204         int index = sensor_attr->index;
1205         unsigned long val;
1206         u8 tmp;
1207
1208         if (kstrtoul(buf, 10, &val) < 0)
1209                 return -EINVAL;
1210         val /= 1000;
1211
1212         mutex_lock(&data->update_lock);
1213         switch (nr) {
1214         case TEMP_PWM_TTTI:
1215                 val = clamp_val(val, 0, 0x7f);
1216                 w83795_write(client, W83795_REG_TTTI(index), val);
1217                 break;
1218         case TEMP_PWM_CTFS:
1219                 val = clamp_val(val, 0, 0x7f);
1220                 w83795_write(client, W83795_REG_CTFS(index), val);
1221                 break;
1222         case TEMP_PWM_HCT:
1223                 val = clamp_val(val, 0, 0x0f);
1224                 tmp = w83795_read(client, W83795_REG_HT(index));
1225                 tmp &= 0x0f;
1226                 tmp |= (val << 4) & 0xf0;
1227                 w83795_write(client, W83795_REG_HT(index), tmp);
1228                 break;
1229         case TEMP_PWM_HOT:
1230                 val = clamp_val(val, 0, 0x0f);
1231                 tmp = w83795_read(client, W83795_REG_HT(index));
1232                 tmp &= 0xf0;
1233                 tmp |= val & 0x0f;
1234                 w83795_write(client, W83795_REG_HT(index), tmp);
1235                 break;
1236         }
1237         data->pwm_temp[index][nr] = val;
1238         mutex_unlock(&data->update_lock);
1239
1240         return count;
1241 }
1242
1243 static ssize_t
1244 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1245 {
1246         struct w83795_data *data = w83795_update_pwm_config(dev);
1247         struct sensor_device_attribute_2 *sensor_attr =
1248             to_sensor_dev_attr_2(attr);
1249         int nr = sensor_attr->nr;
1250         int index = sensor_attr->index;
1251
1252         return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1253 }
1254
1255 static ssize_t
1256 store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1257           const char *buf, size_t count)
1258 {
1259         struct i2c_client *client = to_i2c_client(dev);
1260         struct w83795_data *data = i2c_get_clientdata(client);
1261         struct sensor_device_attribute_2 *sensor_attr =
1262             to_sensor_dev_attr_2(attr);
1263         int nr = sensor_attr->nr;
1264         int index = sensor_attr->index;
1265         unsigned long val;
1266
1267         if (kstrtoul(buf, 10, &val) < 0)
1268                 return -EINVAL;
1269
1270         mutex_lock(&data->update_lock);
1271         w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1272         data->sf4_reg[index][SF4_PWM][nr] = val;
1273         mutex_unlock(&data->update_lock);
1274
1275         return count;
1276 }
1277
1278 static ssize_t
1279 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1280 {
1281         struct w83795_data *data = w83795_update_pwm_config(dev);
1282         struct sensor_device_attribute_2 *sensor_attr =
1283             to_sensor_dev_attr_2(attr);
1284         int nr = sensor_attr->nr;
1285         int index = sensor_attr->index;
1286
1287         return sprintf(buf, "%u\n",
1288                 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1289 }
1290
1291 static ssize_t
1292 store_sf4_temp(struct device *dev, struct device_attribute *attr,
1293           const char *buf, size_t count)
1294 {
1295         struct i2c_client *client = to_i2c_client(dev);
1296         struct w83795_data *data = i2c_get_clientdata(client);
1297         struct sensor_device_attribute_2 *sensor_attr =
1298             to_sensor_dev_attr_2(attr);
1299         int nr = sensor_attr->nr;
1300         int index = sensor_attr->index;
1301         unsigned long val;
1302
1303         if (kstrtoul(buf, 10, &val) < 0)
1304                 return -EINVAL;
1305         val /= 1000;
1306
1307         mutex_lock(&data->update_lock);
1308         w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1309         data->sf4_reg[index][SF4_TEMP][nr] = val;
1310         mutex_unlock(&data->update_lock);
1311
1312         return count;
1313 }
1314
1315
1316 static ssize_t
1317 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1318 {
1319         struct sensor_device_attribute_2 *sensor_attr =
1320             to_sensor_dev_attr_2(attr);
1321         int nr = sensor_attr->nr;
1322         int index = sensor_attr->index;
1323         struct w83795_data *data = w83795_update_device(dev);
1324         long temp = temp_from_reg(data->temp[index][nr]);
1325
1326         if (nr == TEMP_READ)
1327                 temp += (data->temp_read_vrlsb[index] >> 6) * 250;
1328         return sprintf(buf, "%ld\n", temp);
1329 }
1330
1331 static ssize_t
1332 store_temp(struct device *dev, struct device_attribute *attr,
1333            const char *buf, size_t count)
1334 {
1335         struct sensor_device_attribute_2 *sensor_attr =
1336             to_sensor_dev_attr_2(attr);
1337         int nr = sensor_attr->nr;
1338         int index = sensor_attr->index;
1339         struct i2c_client *client = to_i2c_client(dev);
1340         struct w83795_data *data = i2c_get_clientdata(client);
1341         long tmp;
1342
1343         if (kstrtol(buf, 10, &tmp) < 0)
1344                 return -EINVAL;
1345
1346         mutex_lock(&data->update_lock);
1347         data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1348         w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1349         mutex_unlock(&data->update_lock);
1350         return count;
1351 }
1352
1353
1354 static ssize_t
1355 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1356 {
1357         struct w83795_data *data = dev_get_drvdata(dev);
1358         int tmp;
1359
1360         if (data->enable_dts & 2)
1361                 tmp = 5;
1362         else
1363                 tmp = 6;
1364
1365         return sprintf(buf, "%d\n", tmp);
1366 }
1367
1368 static ssize_t
1369 show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1370 {
1371         struct sensor_device_attribute_2 *sensor_attr =
1372             to_sensor_dev_attr_2(attr);
1373         int index = sensor_attr->index;
1374         struct w83795_data *data = w83795_update_device(dev);
1375         long temp = temp_from_reg(data->dts[index]);
1376
1377         temp += (data->dts_read_vrlsb[index] >> 6) * 250;
1378         return sprintf(buf, "%ld\n", temp);
1379 }
1380
1381 static ssize_t
1382 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1383 {
1384         struct sensor_device_attribute_2 *sensor_attr =
1385             to_sensor_dev_attr_2(attr);
1386         int nr = sensor_attr->nr;
1387         struct w83795_data *data = dev_get_drvdata(dev);
1388         long temp = temp_from_reg(data->dts_ext[nr]);
1389
1390         return sprintf(buf, "%ld\n", temp);
1391 }
1392
1393 static ssize_t
1394 store_dts_ext(struct device *dev, struct device_attribute *attr,
1395            const char *buf, size_t count)
1396 {
1397         struct sensor_device_attribute_2 *sensor_attr =
1398             to_sensor_dev_attr_2(attr);
1399         int nr = sensor_attr->nr;
1400         struct i2c_client *client = to_i2c_client(dev);
1401         struct w83795_data *data = i2c_get_clientdata(client);
1402         long tmp;
1403
1404         if (kstrtol(buf, 10, &tmp) < 0)
1405                 return -EINVAL;
1406
1407         mutex_lock(&data->update_lock);
1408         data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1409         w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1410         mutex_unlock(&data->update_lock);
1411         return count;
1412 }
1413
1414
1415 static ssize_t
1416 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1417 {
1418         struct w83795_data *data = dev_get_drvdata(dev);
1419         struct sensor_device_attribute_2 *sensor_attr =
1420             to_sensor_dev_attr_2(attr);
1421         int index = sensor_attr->index;
1422         int tmp;
1423
1424         if (data->temp_mode & (1 << index))
1425                 tmp = 3;        /* Thermal diode */
1426         else
1427                 tmp = 4;        /* Thermistor */
1428
1429         return sprintf(buf, "%d\n", tmp);
1430 }
1431
1432 /* Only for temp1-4 (temp5-6 can only be thermistor) */
1433 static ssize_t
1434 store_temp_mode(struct device *dev, struct device_attribute *attr,
1435                 const char *buf, size_t count)
1436 {
1437         struct i2c_client *client = to_i2c_client(dev);
1438         struct w83795_data *data = i2c_get_clientdata(client);
1439         struct sensor_device_attribute_2 *sensor_attr =
1440             to_sensor_dev_attr_2(attr);
1441         int index = sensor_attr->index;
1442         int reg_shift;
1443         unsigned long val;
1444         u8 tmp;
1445
1446         if (kstrtoul(buf, 10, &val) < 0)
1447                 return -EINVAL;
1448         if ((val != 4) && (val != 3))
1449                 return -EINVAL;
1450
1451         mutex_lock(&data->update_lock);
1452         if (val == 3) {
1453                 /* Thermal diode */
1454                 val = 0x01;
1455                 data->temp_mode |= 1 << index;
1456         } else if (val == 4) {
1457                 /* Thermistor */
1458                 val = 0x03;
1459                 data->temp_mode &= ~(1 << index);
1460         }
1461
1462         reg_shift = 2 * index;
1463         tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1464         tmp &= ~(0x03 << reg_shift);
1465         tmp |= val << reg_shift;
1466         w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1467
1468         mutex_unlock(&data->update_lock);
1469         return count;
1470 }
1471
1472
1473 /* show/store VIN */
1474 static ssize_t
1475 show_in(struct device *dev, struct device_attribute *attr, char *buf)
1476 {
1477         struct sensor_device_attribute_2 *sensor_attr =
1478             to_sensor_dev_attr_2(attr);
1479         int nr = sensor_attr->nr;
1480         int index = sensor_attr->index;
1481         struct w83795_data *data = w83795_update_device(dev);
1482         u16 val = data->in[index][nr];
1483         u8 lsb_idx;
1484
1485         switch (nr) {
1486         case IN_READ:
1487                 /* calculate this value again by sensors as sensors3.conf */
1488                 if ((index >= 17) &&
1489                     !((data->has_gain >> (index - 17)) & 1))
1490                         val *= 8;
1491                 break;
1492         case IN_MAX:
1493         case IN_LOW:
1494                 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1495                 val <<= 2;
1496                 val |= (data->in_lsb[lsb_idx][nr] >>
1497                         IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]) & 0x03;
1498                 if ((index >= 17) &&
1499                     !((data->has_gain >> (index - 17)) & 1))
1500                         val *= 8;
1501                 break;
1502         }
1503         val = in_from_reg(index, val);
1504
1505         return sprintf(buf, "%d\n", val);
1506 }
1507
1508 static ssize_t
1509 store_in(struct device *dev, struct device_attribute *attr,
1510          const char *buf, size_t count)
1511 {
1512         struct sensor_device_attribute_2 *sensor_attr =
1513             to_sensor_dev_attr_2(attr);
1514         int nr = sensor_attr->nr;
1515         int index = sensor_attr->index;
1516         struct i2c_client *client = to_i2c_client(dev);
1517         struct w83795_data *data = i2c_get_clientdata(client);
1518         unsigned long val;
1519         u8 tmp;
1520         u8 lsb_idx;
1521
1522         if (kstrtoul(buf, 10, &val) < 0)
1523                 return -EINVAL;
1524         val = in_to_reg(index, val);
1525
1526         if ((index >= 17) &&
1527             !((data->has_gain >> (index - 17)) & 1))
1528                 val /= 8;
1529         val = clamp_val(val, 0, 0x3FF);
1530         mutex_lock(&data->update_lock);
1531
1532         lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1533         tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1534         tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1535         tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1536         w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1537         data->in_lsb[lsb_idx][nr] = tmp;
1538
1539         tmp = (val >> 2) & 0xff;
1540         w83795_write(client, W83795_REG_IN[index][nr], tmp);
1541         data->in[index][nr] = tmp;
1542
1543         mutex_unlock(&data->update_lock);
1544         return count;
1545 }
1546
1547
1548 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1549 static ssize_t
1550 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1551 {
1552         struct sensor_device_attribute_2 *sensor_attr =
1553             to_sensor_dev_attr_2(attr);
1554         int nr = sensor_attr->nr;
1555         struct w83795_data *data = w83795_update_pwm_config(dev);
1556         u16 val = data->setup_pwm[nr];
1557
1558         switch (nr) {
1559         case SETUP_PWM_UPTIME:
1560         case SETUP_PWM_DOWNTIME:
1561                 val = time_from_reg(val);
1562                 break;
1563         }
1564
1565         return sprintf(buf, "%d\n", val);
1566 }
1567
1568 static ssize_t
1569 store_sf_setup(struct device *dev, struct device_attribute *attr,
1570          const char *buf, size_t count)
1571 {
1572         struct sensor_device_attribute_2 *sensor_attr =
1573             to_sensor_dev_attr_2(attr);
1574         int nr = sensor_attr->nr;
1575         struct i2c_client *client = to_i2c_client(dev);
1576         struct w83795_data *data = i2c_get_clientdata(client);
1577         unsigned long val;
1578
1579         if (kstrtoul(buf, 10, &val) < 0)
1580                 return -EINVAL;
1581
1582         switch (nr) {
1583         case SETUP_PWM_DEFAULT:
1584                 val = clamp_val(val, 0, 0xff);
1585                 break;
1586         case SETUP_PWM_UPTIME:
1587         case SETUP_PWM_DOWNTIME:
1588                 val = time_to_reg(val);
1589                 if (val == 0)
1590                         return -EINVAL;
1591                 break;
1592         }
1593
1594         mutex_lock(&data->update_lock);
1595         data->setup_pwm[nr] = val;
1596         w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1597         mutex_unlock(&data->update_lock);
1598         return count;
1599 }
1600 #endif
1601
1602
1603 #define NOT_USED                        -1
1604
1605 /*
1606  * Don't change the attribute order, _max, _min and _beep are accessed by index
1607  * somewhere else in the code
1608  */
1609 #define SENSOR_ATTR_IN(index) {                                         \
1610         SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL,        \
1611                 IN_READ, index), \
1612         SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in,      \
1613                 store_in, IN_MAX, index),                               \
1614         SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in,      \
1615                 store_in, IN_LOW, index),                               \
1616         SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep,      \
1617                 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1618         SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO,              \
1619                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1620                 index + ((index > 14) ? 1 : 0)) }
1621
1622 /*
1623  * Don't change the attribute order, _beep is accessed by index
1624  * somewhere else in the code
1625  */
1626 #define SENSOR_ATTR_FAN(index) {                                        \
1627         SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan,            \
1628                 NULL, FAN_INPUT, index - 1), \
1629         SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO,              \
1630                 show_fan, store_fan_min, FAN_MIN, index - 1),   \
1631         SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep,     \
1632                 NULL, ALARM_STATUS, index + 31),                        \
1633         SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO,             \
1634                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) }
1635
1636 #define SENSOR_ATTR_PWM(index) {                                        \
1637         SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm,          \
1638                 store_pwm, PWM_OUTPUT, index - 1),                      \
1639         SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO,           \
1640                 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
1641         SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO,                       \
1642                 show_pwm_mode, NULL, NOT_USED, index - 1),              \
1643         SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO,             \
1644                 show_pwm, store_pwm, PWM_FREQ, index - 1),              \
1645         SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO,          \
1646                 show_pwm, store_pwm, PWM_NONSTOP, index - 1),           \
1647         SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO,            \
1648                 show_pwm, store_pwm, PWM_START, index - 1),             \
1649         SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO,        \
1650                 show_pwm, store_pwm, PWM_STOP_TIME, index - 1),  \
1651         SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
1652                 show_fanin, store_fanin, FANIN_TARGET, index - 1) }
1653
1654 /*
1655  * Don't change the attribute order, _beep is accessed by index
1656  * somewhere else in the code
1657  */
1658 #define SENSOR_ATTR_DTS(index) {                                        \
1659         SENSOR_ATTR_2(temp##index##_type, S_IRUGO ,             \
1660                 show_dts_mode, NULL, NOT_USED, index - 7),      \
1661         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts,           \
1662                 NULL, NOT_USED, index - 7),                             \
1663         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \
1664                 store_dts_ext, DTS_CRIT, NOT_USED),                     \
1665         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1666                 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED),  \
1667         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1668                 store_dts_ext, DTS_WARN, NOT_USED),                     \
1669         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1670                 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED),  \
1671         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1672                 show_alarm_beep, NULL, ALARM_STATUS, index + 17),       \
1673         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1674                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
1675
1676 /*
1677  * Don't change the attribute order, _beep is accessed by index
1678  * somewhere else in the code
1679  */
1680 #define SENSOR_ATTR_TEMP(index) {                                       \
1681         SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 5 ? S_IWUSR : 0), \
1682                 show_temp_mode, store_temp_mode, NOT_USED, index - 1),  \
1683         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp,          \
1684                 NULL, TEMP_READ, index - 1),                            \
1685         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \
1686                 store_temp, TEMP_CRIT, index - 1),                      \
1687         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1688                 show_temp, store_temp, TEMP_CRIT_HYST, index - 1),      \
1689         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp,  \
1690                 store_temp, TEMP_WARN, index - 1),                      \
1691         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1692                 show_temp, store_temp, TEMP_WARN_HYST, index - 1),      \
1693         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1694                 show_alarm_beep, NULL, ALARM_STATUS,                    \
1695                 index + (index > 4 ? 11 : 17)),                         \
1696         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1697                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1698                 index + (index > 4 ? 11 : 17)),                         \
1699         SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO,      \
1700                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1701                 TEMP_PWM_ENABLE, index - 1),                            \
1702         SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1703                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1704                 TEMP_PWM_FAN_MAP, index - 1),                           \
1705         SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO,         \
1706                 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1707         SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO,            \
1708                 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1709         SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO,       \
1710                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1711         SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO,  \
1712                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1713         SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1714                 show_sf4_pwm, store_sf4_pwm, 0, index - 1),             \
1715         SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1716                 show_sf4_pwm, store_sf4_pwm, 1, index - 1),             \
1717         SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1718                 show_sf4_pwm, store_sf4_pwm, 2, index - 1),             \
1719         SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1720                 show_sf4_pwm, store_sf4_pwm, 3, index - 1),             \
1721         SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1722                 show_sf4_pwm, store_sf4_pwm, 4, index - 1),             \
1723         SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1724                 show_sf4_pwm, store_sf4_pwm, 5, index - 1),             \
1725         SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1726                 show_sf4_pwm, store_sf4_pwm, 6, index - 1),             \
1727         SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1728                 show_sf4_temp, store_sf4_temp, 0, index - 1),           \
1729         SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1730                 show_sf4_temp, store_sf4_temp, 1, index - 1),           \
1731         SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1732                 show_sf4_temp, store_sf4_temp, 2, index - 1),           \
1733         SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1734                 show_sf4_temp, store_sf4_temp, 3, index - 1),           \
1735         SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1736                 show_sf4_temp, store_sf4_temp, 4, index - 1),           \
1737         SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1738                 show_sf4_temp, store_sf4_temp, 5, index - 1),           \
1739         SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1740                 show_sf4_temp, store_sf4_temp, 6, index - 1) }
1741
1742
1743 static struct sensor_device_attribute_2 w83795_in[][5] = {
1744         SENSOR_ATTR_IN(0),
1745         SENSOR_ATTR_IN(1),
1746         SENSOR_ATTR_IN(2),
1747         SENSOR_ATTR_IN(3),
1748         SENSOR_ATTR_IN(4),
1749         SENSOR_ATTR_IN(5),
1750         SENSOR_ATTR_IN(6),
1751         SENSOR_ATTR_IN(7),
1752         SENSOR_ATTR_IN(8),
1753         SENSOR_ATTR_IN(9),
1754         SENSOR_ATTR_IN(10),
1755         SENSOR_ATTR_IN(11),
1756         SENSOR_ATTR_IN(12),
1757         SENSOR_ATTR_IN(13),
1758         SENSOR_ATTR_IN(14),
1759         SENSOR_ATTR_IN(15),
1760         SENSOR_ATTR_IN(16),
1761         SENSOR_ATTR_IN(17),
1762         SENSOR_ATTR_IN(18),
1763         SENSOR_ATTR_IN(19),
1764         SENSOR_ATTR_IN(20),
1765 };
1766
1767 static const struct sensor_device_attribute_2 w83795_fan[][4] = {
1768         SENSOR_ATTR_FAN(1),
1769         SENSOR_ATTR_FAN(2),
1770         SENSOR_ATTR_FAN(3),
1771         SENSOR_ATTR_FAN(4),
1772         SENSOR_ATTR_FAN(5),
1773         SENSOR_ATTR_FAN(6),
1774         SENSOR_ATTR_FAN(7),
1775         SENSOR_ATTR_FAN(8),
1776         SENSOR_ATTR_FAN(9),
1777         SENSOR_ATTR_FAN(10),
1778         SENSOR_ATTR_FAN(11),
1779         SENSOR_ATTR_FAN(12),
1780         SENSOR_ATTR_FAN(13),
1781         SENSOR_ATTR_FAN(14),
1782 };
1783
1784 static const struct sensor_device_attribute_2 w83795_temp[][28] = {
1785         SENSOR_ATTR_TEMP(1),
1786         SENSOR_ATTR_TEMP(2),
1787         SENSOR_ATTR_TEMP(3),
1788         SENSOR_ATTR_TEMP(4),
1789         SENSOR_ATTR_TEMP(5),
1790         SENSOR_ATTR_TEMP(6),
1791 };
1792
1793 static const struct sensor_device_attribute_2 w83795_dts[][8] = {
1794         SENSOR_ATTR_DTS(7),
1795         SENSOR_ATTR_DTS(8),
1796         SENSOR_ATTR_DTS(9),
1797         SENSOR_ATTR_DTS(10),
1798         SENSOR_ATTR_DTS(11),
1799         SENSOR_ATTR_DTS(12),
1800         SENSOR_ATTR_DTS(13),
1801         SENSOR_ATTR_DTS(14),
1802 };
1803
1804 static const struct sensor_device_attribute_2 w83795_pwm[][8] = {
1805         SENSOR_ATTR_PWM(1),
1806         SENSOR_ATTR_PWM(2),
1807         SENSOR_ATTR_PWM(3),
1808         SENSOR_ATTR_PWM(4),
1809         SENSOR_ATTR_PWM(5),
1810         SENSOR_ATTR_PWM(6),
1811         SENSOR_ATTR_PWM(7),
1812         SENSOR_ATTR_PWM(8),
1813 };
1814
1815 static const struct sensor_device_attribute_2 w83795_tss[6] = {
1816         SENSOR_ATTR_2(temp1_source_sel, S_IWUSR | S_IRUGO,
1817                       show_temp_src, store_temp_src, NOT_USED, 0),
1818         SENSOR_ATTR_2(temp2_source_sel, S_IWUSR | S_IRUGO,
1819                       show_temp_src, store_temp_src, NOT_USED, 1),
1820         SENSOR_ATTR_2(temp3_source_sel, S_IWUSR | S_IRUGO,
1821                       show_temp_src, store_temp_src, NOT_USED, 2),
1822         SENSOR_ATTR_2(temp4_source_sel, S_IWUSR | S_IRUGO,
1823                       show_temp_src, store_temp_src, NOT_USED, 3),
1824         SENSOR_ATTR_2(temp5_source_sel, S_IWUSR | S_IRUGO,
1825                       show_temp_src, store_temp_src, NOT_USED, 4),
1826         SENSOR_ATTR_2(temp6_source_sel, S_IWUSR | S_IRUGO,
1827                       show_temp_src, store_temp_src, NOT_USED, 5),
1828 };
1829
1830 static const struct sensor_device_attribute_2 sda_single_files[] = {
1831         SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep,
1832                       store_chassis_clear, ALARM_STATUS, 46),
1833 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1834         SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1835                 store_fanin, FANIN_TOL, NOT_USED),
1836         SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1837                       store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1838         SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1839                       store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1840         SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1841                       store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1842 #endif
1843 };
1844
1845 static const struct sensor_device_attribute_2 sda_beep_files[] = {
1846         SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep,
1847                       store_beep, BEEP_ENABLE, 46),
1848         SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
1849                       store_beep, BEEP_ENABLE, 47),
1850 };
1851
1852 /*
1853  * Driver interface
1854  */
1855
1856 static void w83795_init_client(struct i2c_client *client)
1857 {
1858         struct w83795_data *data = i2c_get_clientdata(client);
1859         static const u16 clkin[4] = {   /* in kHz */
1860                 14318, 24000, 33333, 48000
1861         };
1862         u8 config;
1863
1864         if (reset)
1865                 w83795_write(client, W83795_REG_CONFIG, 0x80);
1866
1867         /* Start monitoring if needed */
1868         config = w83795_read(client, W83795_REG_CONFIG);
1869         if (!(config & W83795_REG_CONFIG_START)) {
1870                 dev_info(&client->dev, "Enabling monitoring operations\n");
1871                 w83795_write(client, W83795_REG_CONFIG,
1872                              config | W83795_REG_CONFIG_START);
1873         }
1874
1875         data->clkin = clkin[(config >> 3) & 0x3];
1876         dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin);
1877 }
1878
1879 static int w83795_get_device_id(struct i2c_client *client)
1880 {
1881         int device_id;
1882
1883         device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID);
1884
1885         /*
1886          * Special case for rev. A chips; can't be checked first because later
1887          * revisions emulate this for compatibility
1888          */
1889         if (device_id < 0 || (device_id & 0xf0) != 0x50) {
1890                 int alt_id;
1891
1892                 alt_id = i2c_smbus_read_byte_data(client,
1893                                                   W83795_REG_DEVICEID_A);
1894                 if (alt_id == 0x50)
1895                         device_id = alt_id;
1896         }
1897
1898         return device_id;
1899 }
1900
1901 /* Return 0 if detection is successful, -ENODEV otherwise */
1902 static int w83795_detect(struct i2c_client *client,
1903                          struct i2c_board_info *info)
1904 {
1905         int bank, vendor_id, device_id, expected, i2c_addr, config;
1906         struct i2c_adapter *adapter = client->adapter;
1907         unsigned short address = client->addr;
1908         const char *chip_name;
1909
1910         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1911                 return -ENODEV;
1912         bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1913         if (bank < 0 || (bank & 0x7c)) {
1914                 dev_dbg(&adapter->dev,
1915                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1916                         address, "bank");
1917                 return -ENODEV;
1918         }
1919
1920         /* Check Nuvoton vendor ID */
1921         vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID);
1922         expected = bank & 0x80 ? 0x5c : 0xa3;
1923         if (vendor_id != expected) {
1924                 dev_dbg(&adapter->dev,
1925                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1926                         address, "vendor id");
1927                 return -ENODEV;
1928         }
1929
1930         /* Check device ID */
1931         device_id = w83795_get_device_id(client) |
1932                     (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8);
1933         if ((device_id >> 4) != 0x795) {
1934                 dev_dbg(&adapter->dev,
1935                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1936                         address, "device id\n");
1937                 return -ENODEV;
1938         }
1939
1940         /*
1941          * If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1942          * should match
1943          */
1944         if ((bank & 0x07) == 0) {
1945                 i2c_addr = i2c_smbus_read_byte_data(client,
1946                                                     W83795_REG_I2C_ADDR);
1947                 if ((i2c_addr & 0x7f) != address) {
1948                         dev_dbg(&adapter->dev,
1949                                 "w83795: Detection failed at addr 0x%02hx, "
1950                                 "check %s\n", address, "i2c addr");
1951                         return -ENODEV;
1952                 }
1953         }
1954
1955         /*
1956          * Check 795 chip type: 795G or 795ADG
1957          * Usually we don't write to chips during detection, but here we don't
1958          * quite have the choice; hopefully it's OK, we are about to return
1959          * success anyway
1960          */
1961         if ((bank & 0x07) != 0)
1962                 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
1963                                           bank & ~0x07);
1964         config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG);
1965         if (config & W83795_REG_CONFIG_CONFIG48)
1966                 chip_name = "w83795adg";
1967         else
1968                 chip_name = "w83795g";
1969
1970         strlcpy(info->type, chip_name, I2C_NAME_SIZE);
1971         dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name,
1972                  'A' + (device_id & 0xf), address);
1973
1974         return 0;
1975 }
1976
1977 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1978 #define NUM_PWM_ATTRIBUTES      ARRAY_SIZE(w83795_pwm[0])
1979 #define NUM_TEMP_ATTRIBUTES     ARRAY_SIZE(w83795_temp[0])
1980 #else
1981 #define NUM_PWM_ATTRIBUTES      4
1982 #define NUM_TEMP_ATTRIBUTES     8
1983 #endif
1984
1985 static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
1986                                const struct device_attribute *))
1987 {
1988         struct w83795_data *data = dev_get_drvdata(dev);
1989         int err, i, j;
1990
1991         for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
1992                 if (!(data->has_in & (1 << i)))
1993                         continue;
1994                 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) {
1995                         if (j == 4 && !data->enable_beep)
1996                                 continue;
1997                         err = fn(dev, &w83795_in[i][j].dev_attr);
1998                         if (err)
1999                                 return err;
2000                 }
2001         }
2002
2003         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
2004                 if (!(data->has_fan & (1 << i)))
2005                         continue;
2006                 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) {
2007                         if (j == 3 && !data->enable_beep)
2008                                 continue;
2009                         err = fn(dev, &w83795_fan[i][j].dev_attr);
2010                         if (err)
2011                                 return err;
2012                 }
2013         }
2014
2015         for (i = 0; i < ARRAY_SIZE(w83795_tss); i++) {
2016                 j = w83795_tss_useful(data, i);
2017                 if (!j)
2018                         continue;
2019                 err = fn(dev, &w83795_tss[i].dev_attr);
2020                 if (err)
2021                         return err;
2022         }
2023
2024         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
2025                 err = fn(dev, &sda_single_files[i].dev_attr);
2026                 if (err)
2027                         return err;
2028         }
2029
2030         if (data->enable_beep) {
2031                 for (i = 0; i < ARRAY_SIZE(sda_beep_files); i++) {
2032                         err = fn(dev, &sda_beep_files[i].dev_attr);
2033                         if (err)
2034                                 return err;
2035                 }
2036         }
2037
2038         for (i = 0; i < data->has_pwm; i++) {
2039                 for (j = 0; j < NUM_PWM_ATTRIBUTES; j++) {
2040                         err = fn(dev, &w83795_pwm[i][j].dev_attr);
2041                         if (err)
2042                                 return err;
2043                 }
2044         }
2045
2046         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
2047                 if (!(data->has_temp & (1 << i)))
2048                         continue;
2049                 for (j = 0; j < NUM_TEMP_ATTRIBUTES; j++) {
2050                         if (j == 7 && !data->enable_beep)
2051                                 continue;
2052                         err = fn(dev, &w83795_temp[i][j].dev_attr);
2053                         if (err)
2054                                 return err;
2055                 }
2056         }
2057
2058         if (data->enable_dts) {
2059                 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
2060                         if (!(data->has_dts & (1 << i)))
2061                                 continue;
2062                         for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) {
2063                                 if (j == 7 && !data->enable_beep)
2064                                         continue;
2065                                 err = fn(dev, &w83795_dts[i][j].dev_attr);
2066                                 if (err)
2067                                         return err;
2068                         }
2069                 }
2070         }
2071
2072         return 0;
2073 }
2074
2075 /* We need a wrapper that fits in w83795_handle_files */
2076 static int device_remove_file_wrapper(struct device *dev,
2077                                       const struct device_attribute *attr)
2078 {
2079         device_remove_file(dev, attr);
2080         return 0;
2081 }
2082
2083 static void w83795_check_dynamic_in_limits(struct i2c_client *client)
2084 {
2085         struct w83795_data *data = i2c_get_clientdata(client);
2086         u8 vid_ctl;
2087         int i, err_max, err_min;
2088
2089         vid_ctl = w83795_read(client, W83795_REG_VID_CTRL);
2090
2091         /* Return immediately if VRM isn't configured */
2092         if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07)
2093                 return;
2094
2095         data->has_dyn_in = (vid_ctl >> 3) & 0x07;
2096         for (i = 0; i < 2; i++) {
2097                 if (!(data->has_dyn_in & (1 << i)))
2098                         continue;
2099
2100                 /* Voltage limits in dynamic mode, switch to read-only */
2101                 err_max = sysfs_chmod_file(&client->dev.kobj,
2102                                            &w83795_in[i][2].dev_attr.attr,
2103                                            S_IRUGO);
2104                 err_min = sysfs_chmod_file(&client->dev.kobj,
2105                                            &w83795_in[i][3].dev_attr.attr,
2106                                            S_IRUGO);
2107                 if (err_max || err_min)
2108                         dev_warn(&client->dev,
2109                                  "Failed to set in%d limits read-only (%d, %d)\n",
2110                                  i, err_max, err_min);
2111                 else
2112                         dev_info(&client->dev,
2113                                  "in%d limits set dynamically from VID\n", i);
2114         }
2115 }
2116
2117 /* Check pins that can be used for either temperature or voltage monitoring */
2118 static void w83795_apply_temp_config(struct w83795_data *data, u8 config,
2119                                      int temp_chan, int in_chan)
2120 {
2121         /* config is a 2-bit value */
2122         switch (config) {
2123         case 0x2: /* Voltage monitoring */
2124                 data->has_in |= 1 << in_chan;
2125                 break;
2126         case 0x1: /* Thermal diode */
2127                 if (temp_chan >= 4)
2128                         break;
2129                 data->temp_mode |= 1 << temp_chan;
2130                 fallthrough;
2131         case 0x3: /* Thermistor */
2132                 data->has_temp |= 1 << temp_chan;
2133                 break;
2134         }
2135 }
2136
2137 static const struct i2c_device_id w83795_id[];
2138
2139 static int w83795_probe(struct i2c_client *client)
2140 {
2141         int i;
2142         u8 tmp;
2143         struct device *dev = &client->dev;
2144         struct w83795_data *data;
2145         int err;
2146
2147         data = devm_kzalloc(dev, sizeof(struct w83795_data), GFP_KERNEL);
2148         if (!data)
2149                 return -ENOMEM;
2150
2151         i2c_set_clientdata(client, data);
2152         data->chip_type = i2c_match_id(w83795_id, client)->driver_data;
2153         data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
2154         mutex_init(&data->update_lock);
2155
2156         /* Initialize the chip */
2157         w83795_init_client(client);
2158
2159         /* Check which voltages and fans are present */
2160         data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1)
2161                      | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8);
2162         data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1)
2163                       | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8);
2164
2165         /* Check which analog temperatures and extra voltages are present */
2166         tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
2167         if (tmp & 0x20)
2168                 data->enable_dts = 1;
2169         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16);
2170         w83795_apply_temp_config(data, tmp & 0x3, 4, 15);
2171         tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
2172         w83795_apply_temp_config(data, tmp >> 6, 3, 20);
2173         w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19);
2174         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18);
2175         w83795_apply_temp_config(data, tmp & 0x3, 0, 17);
2176
2177         /* Check DTS enable status */
2178         if (data->enable_dts) {
2179                 if (1 & w83795_read(client, W83795_REG_DTSC))
2180                         data->enable_dts |= 2;
2181                 data->has_dts = w83795_read(client, W83795_REG_DTSE);
2182         }
2183
2184         /* Report PECI Tbase values */
2185         if (data->enable_dts == 1) {
2186                 for (i = 0; i < 8; i++) {
2187                         if (!(data->has_dts & (1 << i)))
2188                                 continue;
2189                         tmp = w83795_read(client, W83795_REG_PECI_TBASE(i));
2190                         dev_info(&client->dev,
2191                                  "PECI agent %d Tbase temperature: %u\n",
2192                                  i + 1, (unsigned int)tmp & 0x7f);
2193                 }
2194         }
2195
2196         data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
2197
2198         /* pwm and smart fan */
2199         if (data->chip_type == w83795g)
2200                 data->has_pwm = 8;
2201         else
2202                 data->has_pwm = 2;
2203
2204         /* Check if BEEP pin is available */
2205         if (data->chip_type == w83795g) {
2206                 /* The W83795G has a dedicated BEEP pin */
2207                 data->enable_beep = 1;
2208         } else {
2209                 /*
2210                  * The W83795ADG has a shared pin for OVT# and BEEP, so you
2211                  * can't have both
2212                  */
2213                 tmp = w83795_read(client, W83795_REG_OVT_CFG);
2214                 if ((tmp & OVT_CFG_SEL) == 0)
2215                         data->enable_beep = 1;
2216         }
2217
2218         err = w83795_handle_files(dev, device_create_file);
2219         if (err)
2220                 goto exit_remove;
2221
2222         if (data->chip_type == w83795g)
2223                 w83795_check_dynamic_in_limits(client);
2224
2225         data->hwmon_dev = hwmon_device_register(dev);
2226         if (IS_ERR(data->hwmon_dev)) {
2227                 err = PTR_ERR(data->hwmon_dev);
2228                 goto exit_remove;
2229         }
2230
2231         return 0;
2232
2233 exit_remove:
2234         w83795_handle_files(dev, device_remove_file_wrapper);
2235         return err;
2236 }
2237
2238 static int w83795_remove(struct i2c_client *client)
2239 {
2240         struct w83795_data *data = i2c_get_clientdata(client);
2241
2242         hwmon_device_unregister(data->hwmon_dev);
2243         w83795_handle_files(&client->dev, device_remove_file_wrapper);
2244
2245         return 0;
2246 }
2247
2248
2249 static const struct i2c_device_id w83795_id[] = {
2250         { "w83795g", w83795g },
2251         { "w83795adg", w83795adg },
2252         { }
2253 };
2254 MODULE_DEVICE_TABLE(i2c, w83795_id);
2255
2256 static struct i2c_driver w83795_driver = {
2257         .driver = {
2258                    .name = "w83795",
2259         },
2260         .probe_new      = w83795_probe,
2261         .remove         = w83795_remove,
2262         .id_table       = w83795_id,
2263
2264         .class          = I2C_CLASS_HWMON,
2265         .detect         = w83795_detect,
2266         .address_list   = normal_i2c,
2267 };
2268
2269 module_i2c_driver(w83795_driver);
2270
2271 MODULE_AUTHOR("Wei Song, Jean Delvare <jdelvare@suse.de>");
2272 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2273 MODULE_LICENSE("GPL");