drivers/hwmon/w83795.c

   1 /*
   2  *  w83795.c - Linux kernel driver for hardware monitoring
   3  *  Copyright (C) 2008 Nuvoton Technology Corp.
   4  *                Wei Song
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation - version 2.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  18  *  02110-1301 USA.
  19  *
  20  *  Supports following chips:
  21  *
  22  *  Chip       #vin   #fanin #pwm #temp #dts wchipid  vendid  i2c  ISA
  23  *  w83795g     21     14     8     6     8    0x79   0x5ca3  yes   no
  24  *  w83795adg   18     14     2     6     8    0x79   0x5ca3  yes   no
  25  */
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/init.h>
  30 #include <linux/slab.h>
  31 #include <linux/i2c.h>
  32 #include <linux/hwmon.h>
  33 #include <linux/hwmon-sysfs.h>
  34 #include <linux/err.h>
  35 #include <linux/mutex.h>
  36 #include <linux/delay.h>
  37
  38 /* Addresses to scan */
  39 static const unsigned short normal_i2c[] = {
  40         0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END
  41 };
  42
  43
  44 static int reset;
  45 module_param(reset, bool, 0);
  46 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
  47
  48
  49 #define W83795_REG_BANKSEL              0x00
  50 #define W83795_REG_VENDORID             0xfd
  51 #define W83795_REG_CHIPID               0xfe
  52 #define W83795_REG_DEVICEID             0xfb
  53 #define W83795_REG_DEVICEID_A           0xff
  54
  55 #define W83795_REG_I2C_ADDR             0xfc
  56 #define W83795_REG_CONFIG               0x01
  57 #define W83795_REG_CONFIG_CONFIG48      0x04
  58 #define W83795_REG_CONFIG_START 0x01
  59
  60 /* Multi-Function Pin Ctrl Registers */
  61 #define W83795_REG_VOLT_CTRL1           0x02
  62 #define W83795_REG_VOLT_CTRL2           0x03
  63 #define W83795_REG_TEMP_CTRL1           0x04
  64 #define W83795_REG_TEMP_CTRL2           0x05
  65 #define W83795_REG_FANIN_CTRL1          0x06
  66 #define W83795_REG_FANIN_CTRL2          0x07
  67 #define W83795_REG_VMIGB_CTRL           0x08
  68
  69 #define TEMP_READ                       0
  70 #define TEMP_CRIT                       1
  71 #define TEMP_CRIT_HYST                  2
  72 #define TEMP_WARN                       3
  73 #define TEMP_WARN_HYST                  4
  74 /* only crit and crit_hyst affect real-time alarm status
  75  * current crit crit_hyst warn warn_hyst */
  76 static const u16 W83795_REG_TEMP[][5] = {
  77         {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
  78         {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
  79         {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
  80         {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
  81         {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
  82         {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
  83 };
  84
  85 #define IN_READ                         0
  86 #define IN_MAX                          1
  87 #define IN_LOW                          2
  88 static const u16 W83795_REG_IN[][3] = {
  89         /* Current, HL, LL */
  90         {0x10, 0x70, 0x71},     /* VSEN1 */
  91         {0x11, 0x72, 0x73},     /* VSEN2 */
  92         {0x12, 0x74, 0x75},     /* VSEN3 */
  93         {0x13, 0x76, 0x77},     /* VSEN4 */
  94         {0x14, 0x78, 0x79},     /* VSEN5 */
  95         {0x15, 0x7a, 0x7b},     /* VSEN6 */
  96         {0x16, 0x7c, 0x7d},     /* VSEN7 */
  97         {0x17, 0x7e, 0x7f},     /* VSEN8 */
  98         {0x18, 0x80, 0x81},     /* VSEN9 */
  99         {0x19, 0x82, 0x83},     /* VSEN10 */
 100         {0x1A, 0x84, 0x85},     /* VSEN11 */
 101         {0x1B, 0x86, 0x87},     /* VTT */
 102         {0x1C, 0x88, 0x89},     /* 3VDD */
 103         {0x1D, 0x8a, 0x8b},     /* 3VSB */
 104         {0x1E, 0x8c, 0x8d},     /* VBAT */
 105         {0x1F, 0xa6, 0xa7},     /* VSEN12 */
 106         {0x20, 0xaa, 0xab},     /* VSEN13 */
 107         {0x21, 0x96, 0x97},     /* VSEN14 */
 108         {0x22, 0x9a, 0x9b},     /* VSEN15 */
 109         {0x23, 0x9e, 0x9f},     /* VSEN16 */
 110         {0x24, 0xa2, 0xa3},     /* VSEN17 */
 111 };
 112 #define W83795_REG_VRLSB                0x3C
 113
 114 static const u8 W83795_REG_IN_HL_LSB[] = {
 115         0x8e,   /* VSEN1-4 */
 116         0x90,   /* VSEN5-8 */
 117         0x92,   /* VSEN9-11 */
 118         0x94,   /* VTT, 3VDD, 3VSB, 3VBAT */
 119         0xa8,   /* VSEN12 */
 120         0xac,   /* VSEN13 */
 121         0x98,   /* VSEN14 */
 122         0x9c,   /* VSEN15 */
 123         0xa0,   /* VSEN16 */
 124         0xa4,   /* VSEN17 */
 125 };
 126
 127 #define IN_LSB_REG(index, type) \
 128         (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
 129         : (W83795_REG_IN_HL_LSB[(index)] + 1))
 130
 131 #define IN_LSB_SHIFT                    0
 132 #define IN_LSB_IDX                      1
 133 static const u8 IN_LSB_SHIFT_IDX[][2] = {
 134         /* High/Low LSB shift, LSB No. */
 135         {0x00, 0x00},   /* VSEN1 */
 136         {0x02, 0x00},   /* VSEN2 */
 137         {0x04, 0x00},   /* VSEN3 */
 138         {0x06, 0x00},   /* VSEN4 */
 139         {0x00, 0x01},   /* VSEN5 */
 140         {0x02, 0x01},   /* VSEN6 */
 141         {0x04, 0x01},   /* VSEN7 */
 142         {0x06, 0x01},   /* VSEN8 */
 143         {0x00, 0x02},   /* VSEN9 */
 144         {0x02, 0x02},   /* VSEN10 */
 145         {0x04, 0x02},   /* VSEN11 */
 146         {0x00, 0x03},   /* VTT */
 147         {0x02, 0x03},   /* 3VDD */
 148         {0x04, 0x03},   /* 3VSB */
 149         {0x06, 0x03},   /* VBAT */
 150         {0x06, 0x04},   /* VSEN12 */
 151         {0x06, 0x05},   /* VSEN13 */
 152         {0x06, 0x06},   /* VSEN14 */
 153         {0x06, 0x07},   /* VSEN15 */
 154         {0x06, 0x08},   /* VSEN16 */
 155         {0x06, 0x09},   /* VSEN17 */
 156 };
 157
 158
 159 #define W83795_REG_FAN(index)           (0x2E + (index))
 160 #define W83795_REG_FAN_MIN_HL(index)    (0xB6 + (index))
 161 #define W83795_REG_FAN_MIN_LSB(index)   (0xC4 + (index) / 2)
 162 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
 163         (((index) & 1) ? 4 : 0)
 164
 165 #define W83795_REG_VID_CTRL             0x6A
 166
 167 #define W83795_REG_ALARM(index)         (0x41 + (index))
 168 #define W83795_REG_BEEP(index)          (0x50 + (index))
 169
 170 #define W83795_REG_CLR_CHASSIS          0x4D
 171
 172
 173 #define W83795_REG_FCMS1                0x201
 174 #define W83795_REG_FCMS2                0x208
 175 #define W83795_REG_TFMR(index)          (0x202 + (index))
 176 #define W83795_REG_FOMC                 0x20F
 177
 178 #define W83795_REG_TSS(index)           (0x209 + (index))
 179
 180 #define PWM_OUTPUT                      0
 181 #define PWM_FREQ                        1
 182 #define PWM_START                       2
 183 #define PWM_NONSTOP                     3
 184 #define PWM_STOP_TIME                   4
 185 #define W83795_REG_PWM(index, nr)       (0x210 + (nr) * 8 + (index))
 186
 187 #define W83795_REG_FTSH(index)          (0x240 + (index) * 2)
 188 #define W83795_REG_FTSL(index)          (0x241 + (index) * 2)
 189 #define W83795_REG_TFTS                 0x250
 190
 191 #define TEMP_PWM_TTTI                   0
 192 #define TEMP_PWM_CTFS                   1
 193 #define TEMP_PWM_HCT                    2
 194 #define TEMP_PWM_HOT                    3
 195 #define W83795_REG_TTTI(index)          (0x260 + (index))
 196 #define W83795_REG_CTFS(index)          (0x268 + (index))
 197 #define W83795_REG_HT(index)            (0x270 + (index))
 198
 199 #define SF4_TEMP                        0
 200 #define SF4_PWM                         1
 201 #define W83795_REG_SF4_TEMP(temp_num, index) \
 202         (0x280 + 0x10 * (temp_num) + (index))
 203 #define W83795_REG_SF4_PWM(temp_num, index) \
 204         (0x288 + 0x10 * (temp_num) + (index))
 205
 206 #define W83795_REG_DTSC                 0x301
 207 #define W83795_REG_DTSE                 0x302
 208 #define W83795_REG_DTS(index)           (0x26 + (index))
 209 #define W83795_REG_PECI_TBASE(index)    (0x320 + (index))
 210
 211 #define DTS_CRIT                        0
 212 #define DTS_CRIT_HYST                   1
 213 #define DTS_WARN                        2
 214 #define DTS_WARN_HYST                   3
 215 #define W83795_REG_DTS_EXT(index)       (0xB2 + (index))
 216
 217 #define SETUP_PWM_DEFAULT               0
 218 #define SETUP_PWM_UPTIME                1
 219 #define SETUP_PWM_DOWNTIME              2
 220 #define W83795_REG_SETUP_PWM(index)    (0x20C + (index))
 221
 222 static inline u16 in_from_reg(u8 index, u16 val)
 223 {
 224         /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */
 225         if (index >= 12 && index <= 14)
 226                 return val * 6;
 227         else
 228                 return val * 2;
 229 }
 230
 231 static inline u16 in_to_reg(u8 index, u16 val)
 232 {
 233         if (index >= 12 && index <= 14)
 234                 return val / 6;
 235         else
 236                 return val / 2;
 237 }
 238
 239 static inline unsigned long fan_from_reg(u16 val)
 240 {
 241         if ((val == 0xfff) || (val == 0))
 242                 return 0;
 243         return 1350000UL / val;
 244 }
 245
 246 static inline u16 fan_to_reg(long rpm)
 247 {
 248         if (rpm <= 0)
 249                 return 0x0fff;
 250         return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
 251 }
 252
 253 static inline unsigned long time_from_reg(u8 reg)
 254 {
 255         return reg * 100;
 256 }
 257
 258 static inline u8 time_to_reg(unsigned long val)
 259 {
 260         return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
 261 }
 262
 263 static inline long temp_from_reg(s8 reg)
 264 {
 265         return reg * 1000;
 266 }
 267
 268 static inline s8 temp_to_reg(long val, s8 min, s8 max)
 269 {
 270         return SENSORS_LIMIT(val / 1000, min, max);
 271 }
 272
 273 static const u16 pwm_freq_cksel0[16] = {
 274         1024, 512, 341, 256, 205, 171, 146, 128,
 275         85, 64, 32, 16, 8, 4, 2, 1
 276 };
 277
 278 static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin)
 279 {
 280         unsigned long base_clock;
 281
 282         if (reg & 0x80) {
 283                 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
 284                 return base_clock / ((reg & 0x7f) + 1);
 285         } else
 286                 return pwm_freq_cksel0[reg & 0x0f];
 287 }
 288
 289 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
 290 {
 291         unsigned long base_clock;
 292         u8 reg0, reg1;
 293         unsigned long best0, best1;
 294
 295         /* Best fit for cksel = 0 */
 296         for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) {
 297                 if (val > (pwm_freq_cksel0[reg0] +
 298                            pwm_freq_cksel0[reg0 + 1]) / 2)
 299                         break;
 300         }
 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 = SENSORS_LIMIT(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;          /* Enable PECI and SB-TSI,
 345                                  * bit 0: =1 enable, =0 disable,
 346                                  * bit 1: =1 AMD SB-TSI, =0 Intel PECI */
 347         u8 has_dts;             /* Enable monitor DTS temp */
 348         s8 dts[8];              /* Register value */
 349         u8 dts_read_vrlsb[8];   /* Register value */
 350         s8 dts_ext[4];          /* Register value */
 351
 352         u8 has_pwm;             /* 795g supports 8 pwm, 795adg only supports 2,
 353                                  * no config register, only affected by chip
 354                                  * type */
 355         u8 pwm[8][5];           /* Register value, output, freq, start,
 356                                  *  non stop, stop time */
 357         u16 clkin;              /* CLKIN frequency in kHz */
 358         u8 pwm_fcms[2];         /* Register value */
 359         u8 pwm_tfmr[6];         /* Register value */
 360         u8 pwm_fomc;            /* Register value */
 361
 362         u16 target_speed[8];    /* Register value, target speed for speed
 363                                  * cruise */
 364         u8 tol_speed;           /* tolerance of target speed */
 365         u8 pwm_temp[6][4];      /* TTTI, CTFS, HCT, HOT */
 366         u8 sf4_reg[6][2][7];    /* 6 temp, temp/dcpwm, 7 registers */
 367
 368         u8 setup_pwm[3];        /* Register value */
 369
 370         u8 alarms[6];           /* Register value */
 371         u8 beeps[6];            /* Register value */
 372
 373         char valid;
 374 };
 375
 376 /*
 377  * Hardware access
 378  * We assume that nobdody can change the bank outside the driver.
 379  */
 380
 381 /* Must be called with data->update_lock held, except during initialization */
 382 static int w83795_set_bank(struct i2c_client *client, u8 bank)
 383 {
 384         struct w83795_data *data = i2c_get_clientdata(client);
 385         int err;
 386
 387         /* If the same bank is already set, nothing to do */
 388         if ((data->bank & 0x07) == bank)
 389                 return 0;
 390
 391         /* Change to new bank, preserve all other bits */
 392         bank |= data->bank & ~0x07;
 393         err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank);
 394         if (err < 0) {
 395                 dev_err(&client->dev,
 396                         "Failed to set bank to %d, err %d\n",
 397                         (int)bank, err);
 398                 return err;
 399         }
 400         data->bank = bank;
 401
 402         return 0;
 403 }
 404
 405 /* Must be called with data->update_lock held, except during initialization */
 406 static u8 w83795_read(struct i2c_client *client, u16 reg)
 407 {
 408         int err;
 409
 410         err = w83795_set_bank(client, reg >> 8);
 411         if (err < 0)
 412                 return 0x00;    /* Arbitrary */
 413
 414         err = i2c_smbus_read_byte_data(client, reg & 0xff);
 415         if (err < 0) {
 416                 dev_err(&client->dev,
 417                         "Failed to read from register 0x%03x, err %d\n",
 418                         (int)reg, err);
 419                 return 0x00;    /* Arbitrary */
 420         }
 421         return err;
 422 }
 423
 424 /* Must be called with data->update_lock held, except during initialization */
 425 static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
 426 {
 427         int err;
 428
 429         err = w83795_set_bank(client, reg >> 8);
 430         if (err < 0)
 431                 return err;
 432
 433         err = i2c_smbus_write_byte_data(client, reg & 0xff, value);
 434         if (err < 0)
 435                 dev_err(&client->dev,
 436                         "Failed to write to register 0x%03x, err %d\n",
 437                         (int)reg, err);
 438         return err;
 439 }
 440
 441 static void w83795_update_limits(struct i2c_client *client)
 442 {
 443         struct w83795_data *data = i2c_get_clientdata(client);
 444         int i, limit;
 445
 446         /* Read the voltage limits */
 447         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
 448                 if (!(data->has_in & (1 << i)))
 449                         continue;
 450                 data->in[i][IN_MAX] =
 451                         w83795_read(client, W83795_REG_IN[i][IN_MAX]);
 452                 data->in[i][IN_LOW] =
 453                         w83795_read(client, W83795_REG_IN[i][IN_LOW]);
 454         }
 455         for (i = 0; i < ARRAY_SIZE(data->in_lsb); i++) {
 456                 if ((i == 2 && data->chip_type == w83795adg) ||
 457                     (i >= 4 && !(data->has_in & (1 << (i + 11)))))
 458                         continue;
 459                 data->in_lsb[i][IN_MAX] =
 460                         w83795_read(client, IN_LSB_REG(i, IN_MAX));
 461                 data->in_lsb[i][IN_LOW] =
 462                         w83795_read(client, IN_LSB_REG(i, IN_LOW));
 463         }
 464
 465         /* Read the fan limits */
 466         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
 467                 u8 lsb;
 468
 469                 /* Each register contains LSB for 2 fans, but we want to
 470                  * read it only once to save time */
 471                 if ((i & 1) == 0 && (data->has_fan & (3 << i)))
 472                         lsb = w83795_read(client, W83795_REG_FAN_MIN_LSB(i));
 473
 474                 if (!(data->has_fan & (1 << i)))
 475                         continue;
 476                 data->fan_min[i] =
 477                         w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
 478                 data->fan_min[i] |=
 479                         (lsb >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F;
 480         }
 481
 482         /* Read the temperature limits */
 483         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
 484                 if (!(data->has_temp & (1 << i)))
 485                         continue;
 486                 for (limit = TEMP_CRIT; limit <= TEMP_WARN_HYST; limit++)
 487                         data->temp[i][limit] =
 488                                 w83795_read(client, W83795_REG_TEMP[i][limit]);
 489         }
 490
 491         /* Read the DTS limits */
 492         if (data->enable_dts != 0) {
 493                 for (limit = DTS_CRIT; limit <= DTS_WARN_HYST; limit++)
 494                         data->dts_ext[limit] =
 495                                 w83795_read(client, W83795_REG_DTS_EXT(limit));
 496         }
 497
 498         /* Read beep settings */
 499         for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
 500                 data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i));
 501 }
 502
 503 static void w83795_update_pwm_config(struct i2c_client *client)
 504 {
 505         struct w83795_data *data = i2c_get_clientdata(client);
 506         int i, tmp;
 507
 508         /* Read temperature source selection */
 509         for (i = 0; i < ARRAY_SIZE(data->temp_src); i++)
 510                 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
 511
 512         /* Read automatic fan speed control settings */
 513         data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
 514         data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
 515         for (i = 0; i < ARRAY_SIZE(data->pwm_tfmr); i++)
 516                 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
 517         data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
 518         for (i = 0; i < data->has_pwm; i++) {
 519                 for (tmp = PWM_FREQ; tmp <= PWM_STOP_TIME; tmp++)
 520                         data->pwm[i][tmp] =
 521                                 w83795_read(client, W83795_REG_PWM(i, tmp));
 522         }
 523         for (i = 0; i < ARRAY_SIZE(data->target_speed); i++) {
 524                 data->target_speed[i] =
 525                         w83795_read(client, W83795_REG_FTSH(i)) << 4;
 526                 data->target_speed[i] |=
 527                         w83795_read(client, W83795_REG_FTSL(i)) >> 4;
 528         }
 529         data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
 530
 531         for (i = 0; i < ARRAY_SIZE(data->pwm_temp); i++) {
 532                 data->pwm_temp[i][TEMP_PWM_TTTI] =
 533                         w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
 534                 data->pwm_temp[i][TEMP_PWM_CTFS] =
 535                         w83795_read(client, W83795_REG_CTFS(i));
 536                 tmp = w83795_read(client, W83795_REG_HT(i));
 537                 data->pwm_temp[i][TEMP_PWM_HCT] = (tmp >> 4) & 0x0f;
 538                 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
 539         }
 540
 541         /* Read SmartFanIV trip points */
 542         for (i = 0; i < ARRAY_SIZE(data->sf4_reg); i++) {
 543                 for (tmp = 0; tmp < 7; tmp++) {
 544                         data->sf4_reg[i][SF4_TEMP][tmp] =
 545                                 w83795_read(client,
 546                                             W83795_REG_SF4_TEMP(i, tmp));
 547                         data->sf4_reg[i][SF4_PWM][tmp] =
 548                                 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
 549                 }
 550         }
 551
 552         /* Read setup PWM */
 553         for (i = 0; i < ARRAY_SIZE(data->setup_pwm); i++)
 554                 data->setup_pwm[i] =
 555                         w83795_read(client, W83795_REG_SETUP_PWM(i));
 556 }
 557
 558 static struct w83795_data *w83795_update_device(struct device *dev)
 559 {
 560         struct i2c_client *client = to_i2c_client(dev);
 561         struct w83795_data *data = i2c_get_clientdata(client);
 562         u16 tmp;
 563         int i;
 564
 565         mutex_lock(&data->update_lock);
 566
 567         if (!(time_after(jiffies, data->last_updated + HZ * 2)
 568               || !data->valid))
 569                 goto END;
 570
 571         /* Update the voltages value */
 572         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
 573                 if (!(data->has_in & (1 << i)))
 574                         continue;
 575                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
 576                 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
 577                 data->in[i][IN_READ] = tmp;
 578         }
 579
 580         /* in0-2 can have dynamic limits (W83795G only) */
 581         if (data->has_dyn_in) {
 582                 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX));
 583                 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW));
 584
 585                 for (i = 0; i < 3; i++) {
 586                         if (!(data->has_dyn_in & (1 << i)))
 587                                 continue;
 588                         data->in[i][IN_MAX] =
 589                                 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
 590                         data->in[i][IN_LOW] =
 591                                 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
 592                         data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03;
 593                         data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03;
 594                 }
 595         }
 596
 597         /* Update fan */
 598         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
 599                 if (!(data->has_fan & (1 << i)))
 600                         continue;
 601                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
 602                 data->fan[i] |=
 603                   (w83795_read(client, W83795_REG_VRLSB) >> 4) & 0x0F;
 604         }
 605
 606         /* Update temperature */
 607         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
 608                 data->temp[i][TEMP_READ] =
 609                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
 610                 data->temp_read_vrlsb[i] =
 611                         w83795_read(client, W83795_REG_VRLSB);
 612         }
 613
 614         /* Update dts temperature */
 615         if (data->enable_dts != 0) {
 616                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
 617                         if (!(data->has_dts & (1 << i)))
 618                                 continue;
 619                         data->dts[i] =
 620                                 w83795_read(client, W83795_REG_DTS(i));
 621                         data->dts_read_vrlsb[i] =
 622                                 w83795_read(client, W83795_REG_VRLSB);
 623                 }
 624         }
 625
 626         /* Update pwm output */
 627         for (i = 0; i < data->has_pwm; i++) {
 628                 data->pwm[i][PWM_OUTPUT] =
 629                     w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
 630         }
 631
 632         /* update alarm */
 633         for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
 634                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
 635
 636         data->last_updated = jiffies;
 637         data->valid = 1;
 638
 639 END:
 640         mutex_unlock(&data->update_lock);
 641         return data;
 642 }
 643
 644 /*
 645  * Sysfs attributes
 646  */
 647
 648 #define ALARM_STATUS      0
 649 #define BEEP_ENABLE       1
 650 static ssize_t
 651 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
 652 {
 653         struct w83795_data *data = w83795_update_device(dev);
 654         struct sensor_device_attribute_2 *sensor_attr =
 655             to_sensor_dev_attr_2(attr);
 656         int nr = sensor_attr->nr;
 657         int index = sensor_attr->index >> 3;
 658         int bit = sensor_attr->index & 0x07;
 659         u8 val;
 660
 661         if (ALARM_STATUS == nr) {
 662                 val = (data->alarms[index] >> (bit)) & 1;
 663         } else {                /* BEEP_ENABLE */
 664                 val = (data->beeps[index] >> (bit)) & 1;
 665         }
 666
 667         return sprintf(buf, "%u\n", val);
 668 }
 669
 670 static ssize_t
 671 store_beep(struct device *dev, struct device_attribute *attr,
 672            const char *buf, size_t count)
 673 {
 674         struct i2c_client *client = to_i2c_client(dev);
 675         struct w83795_data *data = i2c_get_clientdata(client);
 676         struct sensor_device_attribute_2 *sensor_attr =
 677             to_sensor_dev_attr_2(attr);
 678         int index = sensor_attr->index >> 3;
 679         int shift = sensor_attr->index & 0x07;
 680         u8 beep_bit = 1 << shift;
 681         unsigned long val;
 682
 683         if (strict_strtoul(buf, 10, &val) < 0)
 684                 return -EINVAL;
 685         if (val != 0 && val != 1)
 686                 return -EINVAL;
 687
 688         mutex_lock(&data->update_lock);
 689         data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
 690         data->beeps[index] &= ~beep_bit;
 691         data->beeps[index] |= val << shift;
 692         w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
 693         mutex_unlock(&data->update_lock);
 694
 695         return count;
 696 }
 697
 698 /* Write any value to clear chassis alarm */
 699 static ssize_t
 700 store_chassis_clear(struct device *dev,
 701                     struct device_attribute *attr, const char *buf,
 702                     size_t count)
 703 {
 704         struct i2c_client *client = to_i2c_client(dev);
 705         struct w83795_data *data = i2c_get_clientdata(client);
 706         u8 val;
 707
 708         mutex_lock(&data->update_lock);
 709         val = w83795_read(client, W83795_REG_CLR_CHASSIS);
 710         val |= 0x80;
 711         w83795_write(client, W83795_REG_CLR_CHASSIS, val);
 712         mutex_unlock(&data->update_lock);
 713         return count;
 714 }
 715
 716 #define FAN_INPUT     0
 717 #define FAN_MIN       1
 718 static ssize_t
 719 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
 720 {
 721         struct sensor_device_attribute_2 *sensor_attr =
 722             to_sensor_dev_attr_2(attr);
 723         int nr = sensor_attr->nr;
 724         int index = sensor_attr->index;
 725         struct w83795_data *data = w83795_update_device(dev);
 726         u16 val;
 727
 728         if (FAN_INPUT == nr)
 729                 val = data->fan[index] & 0x0fff;
 730         else
 731                 val = data->fan_min[index] & 0x0fff;
 732
 733         return sprintf(buf, "%lu\n", fan_from_reg(val));
 734 }
 735
 736 static ssize_t
 737 store_fan_min(struct device *dev, struct device_attribute *attr,
 738               const char *buf, size_t count)
 739 {
 740         struct sensor_device_attribute_2 *sensor_attr =
 741             to_sensor_dev_attr_2(attr);
 742         int index = sensor_attr->index;
 743         struct i2c_client *client = to_i2c_client(dev);
 744         struct w83795_data *data = i2c_get_clientdata(client);
 745         unsigned long val;
 746
 747         if (strict_strtoul(buf, 10, &val))
 748                 return -EINVAL;
 749         val = fan_to_reg(val);
 750
 751         mutex_lock(&data->update_lock);
 752         data->fan_min[index] = val;
 753         w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
 754         val &= 0x0f;
 755         if (index & 1) {
 756                 val <<= 4;
 757                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 758                        & 0x0f;
 759         } else {
 760                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 761                        & 0xf0;
 762         }
 763         w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
 764         mutex_unlock(&data->update_lock);
 765
 766         return count;
 767 }
 768
 769 static ssize_t
 770 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 771 {
 772         struct w83795_data *data = w83795_update_device(dev);
 773         struct sensor_device_attribute_2 *sensor_attr =
 774             to_sensor_dev_attr_2(attr);
 775         int nr = sensor_attr->nr;
 776         int index = sensor_attr->index;
 777         unsigned int val;
 778
 779         switch (nr) {
 780         case PWM_STOP_TIME:
 781                 val = time_from_reg(data->pwm[index][nr]);
 782                 break;
 783         case PWM_FREQ:
 784                 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin);
 785                 break;
 786         default:
 787                 val = data->pwm[index][nr];
 788                 break;
 789         }
 790
 791         return sprintf(buf, "%u\n", val);
 792 }
 793
 794 static ssize_t
 795 store_pwm(struct device *dev, struct device_attribute *attr,
 796           const char *buf, size_t count)
 797 {
 798         struct i2c_client *client = to_i2c_client(dev);
 799         struct w83795_data *data = i2c_get_clientdata(client);
 800         struct sensor_device_attribute_2 *sensor_attr =
 801             to_sensor_dev_attr_2(attr);
 802         int nr = sensor_attr->nr;
 803         int index = sensor_attr->index;
 804         unsigned long val;
 805
 806         if (strict_strtoul(buf, 10, &val) < 0)
 807                 return -EINVAL;
 808
 809         mutex_lock(&data->update_lock);
 810         switch (nr) {
 811         case PWM_STOP_TIME:
 812                 val = time_to_reg(val);
 813                 break;
 814         case PWM_FREQ:
 815                 val = pwm_freq_to_reg(val, data->clkin);
 816                 break;
 817         default:
 818                 val = SENSORS_LIMIT(val, 0, 0xff);
 819                 break;
 820         }
 821         w83795_write(client, W83795_REG_PWM(index, nr), val);
 822         data->pwm[index][nr] = val;
 823         mutex_unlock(&data->update_lock);
 824         return count;
 825 }
 826
 827 static ssize_t
 828 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
 829 {
 830         struct sensor_device_attribute_2 *sensor_attr =
 831             to_sensor_dev_attr_2(attr);
 832         struct i2c_client *client = to_i2c_client(dev);
 833         struct w83795_data *data = i2c_get_clientdata(client);
 834         int index = sensor_attr->index;
 835         u8 tmp;
 836
 837         if (1 == (data->pwm_fcms[0] & (1 << index))) {
 838                 tmp = 2;
 839                 goto out;
 840         }
 841         for (tmp = 0; tmp < 6; tmp++) {
 842                 if (data->pwm_tfmr[tmp] & (1 << index)) {
 843                         tmp = 3;
 844                         goto out;
 845                 }
 846         }
 847         if (data->pwm_fomc & (1 << index))
 848                 tmp = 0;
 849         else
 850                 tmp = 1;
 851
 852 out:
 853         return sprintf(buf, "%u\n", tmp);
 854 }
 855
 856 static ssize_t
 857 store_pwm_enable(struct device *dev, struct device_attribute *attr,
 858           const char *buf, size_t count)
 859 {
 860         struct i2c_client *client = to_i2c_client(dev);
 861         struct w83795_data *data = i2c_get_clientdata(client);
 862         struct sensor_device_attribute_2 *sensor_attr =
 863             to_sensor_dev_attr_2(attr);
 864         int index = sensor_attr->index;
 865         unsigned long val;
 866         int i;
 867
 868         if (strict_strtoul(buf, 10, &val) < 0)
 869                 return -EINVAL;
 870         if (val > 2)
 871                 return -EINVAL;
 872
 873         mutex_lock(&data->update_lock);
 874         switch (val) {
 875         case 0:
 876         case 1:
 877                 data->pwm_fcms[0] &= ~(1 << index);
 878                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 879                 for (i = 0; i < 6; i++) {
 880                         data->pwm_tfmr[i] &= ~(1 << index);
 881                         w83795_write(client, W83795_REG_TFMR(i),
 882                                 data->pwm_tfmr[i]);
 883                 }
 884                 data->pwm_fomc |= 1 << index;
 885                 data->pwm_fomc ^= val << index;
 886                 w83795_write(client, W83795_REG_FOMC, data->pwm_fomc);
 887                 break;
 888         case 2:
 889                 data->pwm_fcms[0] |= (1 << index);
 890                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 891                 break;
 892         }
 893         mutex_unlock(&data->update_lock);
 894         return count;
 895 }
 896
 897 static ssize_t
 898 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
 899 {
 900         struct sensor_device_attribute_2 *sensor_attr =
 901             to_sensor_dev_attr_2(attr);
 902         struct i2c_client *client = to_i2c_client(dev);
 903         struct w83795_data *data = i2c_get_clientdata(client);
 904         int index = sensor_attr->index;
 905         u8 val = index / 2;
 906         u8 tmp = data->temp_src[val];
 907
 908         if (index & 1)
 909                 val = 4;
 910         else
 911                 val = 0;
 912         tmp >>= val;
 913         tmp &= 0x0f;
 914
 915         return sprintf(buf, "%u\n", tmp);
 916 }
 917
 918 static ssize_t
 919 store_temp_src(struct device *dev, struct device_attribute *attr,
 920           const char *buf, size_t count)
 921 {
 922         struct i2c_client *client = to_i2c_client(dev);
 923         struct w83795_data *data = i2c_get_clientdata(client);
 924         struct sensor_device_attribute_2 *sensor_attr =
 925             to_sensor_dev_attr_2(attr);
 926         int index = sensor_attr->index;
 927         unsigned long tmp;
 928         u8 val = index / 2;
 929
 930         if (strict_strtoul(buf, 10, &tmp) < 0)
 931                 return -EINVAL;
 932         tmp = SENSORS_LIMIT(tmp, 0, 15);
 933
 934         mutex_lock(&data->update_lock);
 935         if (index & 1) {
 936                 tmp <<= 4;
 937                 data->temp_src[val] &= 0x0f;
 938         } else {
 939                 data->temp_src[val] &= 0xf0;
 940         }
 941         data->temp_src[val] |= tmp;
 942         w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
 943         mutex_unlock(&data->update_lock);
 944
 945         return count;
 946 }
 947
 948 #define TEMP_PWM_ENABLE   0
 949 #define TEMP_PWM_FAN_MAP  1
 950 static ssize_t
 951 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 952                      char *buf)
 953 {
 954         struct i2c_client *client = to_i2c_client(dev);
 955         struct w83795_data *data = i2c_get_clientdata(client);
 956         struct sensor_device_attribute_2 *sensor_attr =
 957             to_sensor_dev_attr_2(attr);
 958         int nr = sensor_attr->nr;
 959         int index = sensor_attr->index;
 960         u8 tmp = 0xff;
 961
 962         switch (nr) {
 963         case TEMP_PWM_ENABLE:
 964                 tmp = (data->pwm_fcms[1] >> index) & 1;
 965                 if (tmp)
 966                         tmp = 4;
 967                 else
 968                         tmp = 3;
 969                 break;
 970         case TEMP_PWM_FAN_MAP:
 971                 tmp = data->pwm_tfmr[index];
 972                 break;
 973         }
 974
 975         return sprintf(buf, "%u\n", tmp);
 976 }
 977
 978 static ssize_t
 979 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 980           const char *buf, size_t count)
 981 {
 982         struct i2c_client *client = to_i2c_client(dev);
 983         struct w83795_data *data = i2c_get_clientdata(client);
 984         struct sensor_device_attribute_2 *sensor_attr =
 985             to_sensor_dev_attr_2(attr);
 986         int nr = sensor_attr->nr;
 987         int index = sensor_attr->index;
 988         unsigned long tmp;
 989
 990         if (strict_strtoul(buf, 10, &tmp) < 0)
 991                 return -EINVAL;
 992
 993         switch (nr) {
 994         case TEMP_PWM_ENABLE:
 995                 if ((tmp != 3) && (tmp != 4))
 996                         return -EINVAL;
 997                 tmp -= 3;
 998                 mutex_lock(&data->update_lock);
 999                 data->pwm_fcms[1] &= ~(1 << index);
1000                 data->pwm_fcms[1] |= tmp << index;
1001                 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
1002                 mutex_unlock(&data->update_lock);
1003                 break;
1004         case TEMP_PWM_FAN_MAP:
1005                 mutex_lock(&data->update_lock);
1006                 tmp = SENSORS_LIMIT(tmp, 0, 0xff);
1007                 w83795_write(client, W83795_REG_TFMR(index), tmp);
1008                 data->pwm_tfmr[index] = tmp;
1009                 mutex_unlock(&data->update_lock);
1010                 break;
1011         }
1012         return count;
1013 }
1014
1015 #define FANIN_TARGET   0
1016 #define FANIN_TOL      1
1017 static ssize_t
1018 show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
1019 {
1020         struct i2c_client *client = to_i2c_client(dev);
1021         struct w83795_data *data = i2c_get_clientdata(client);
1022         struct sensor_device_attribute_2 *sensor_attr =
1023             to_sensor_dev_attr_2(attr);
1024         int nr = sensor_attr->nr;
1025         int index = sensor_attr->index;
1026         u16 tmp = 0;
1027
1028         switch (nr) {
1029         case FANIN_TARGET:
1030                 tmp = fan_from_reg(data->target_speed[index]);
1031                 break;
1032         case FANIN_TOL:
1033                 tmp = data->tol_speed;
1034                 break;
1035         }
1036
1037         return sprintf(buf, "%u\n", tmp);
1038 }
1039
1040 static ssize_t
1041 store_fanin(struct device *dev, struct device_attribute *attr,
1042           const char *buf, size_t count)
1043 {
1044         struct i2c_client *client = to_i2c_client(dev);
1045         struct w83795_data *data = i2c_get_clientdata(client);
1046         struct sensor_device_attribute_2 *sensor_attr =
1047             to_sensor_dev_attr_2(attr);
1048         int nr = sensor_attr->nr;
1049         int index = sensor_attr->index;
1050         unsigned long val;
1051
1052         if (strict_strtoul(buf, 10, &val) < 0)
1053                 return -EINVAL;
1054
1055         mutex_lock(&data->update_lock);
1056         switch (nr) {
1057         case FANIN_TARGET:
1058                 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff));
1059                 w83795_write(client, W83795_REG_FTSH(index), (val >> 4) & 0xff);
1060                 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
1061                 data->target_speed[index] = val;
1062                 break;
1063         case FANIN_TOL:
1064                 val = SENSORS_LIMIT(val, 0, 0x3f);
1065                 w83795_write(client, W83795_REG_TFTS, val);
1066                 data->tol_speed = val;
1067                 break;
1068         }
1069         mutex_unlock(&data->update_lock);
1070
1071         return count;
1072 }
1073
1074
1075 static ssize_t
1076 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1077 {
1078         struct i2c_client *client = to_i2c_client(dev);
1079         struct w83795_data *data = i2c_get_clientdata(client);
1080         struct sensor_device_attribute_2 *sensor_attr =
1081             to_sensor_dev_attr_2(attr);
1082         int nr = sensor_attr->nr;
1083         int index = sensor_attr->index;
1084         long tmp = temp_from_reg(data->pwm_temp[index][nr]);
1085
1086         return sprintf(buf, "%ld\n", tmp);
1087 }
1088
1089 static ssize_t
1090 store_temp_pwm(struct device *dev, struct device_attribute *attr,
1091           const char *buf, size_t count)
1092 {
1093         struct i2c_client *client = to_i2c_client(dev);
1094         struct w83795_data *data = i2c_get_clientdata(client);
1095         struct sensor_device_attribute_2 *sensor_attr =
1096             to_sensor_dev_attr_2(attr);
1097         int nr = sensor_attr->nr;
1098         int index = sensor_attr->index;
1099         unsigned long val;
1100         u8 tmp;
1101
1102         if (strict_strtoul(buf, 10, &val) < 0)
1103                 return -EINVAL;
1104         val /= 1000;
1105
1106         mutex_lock(&data->update_lock);
1107         switch (nr) {
1108         case TEMP_PWM_TTTI:
1109                 val = SENSORS_LIMIT(val, 0, 0x7f);
1110                 w83795_write(client, W83795_REG_TTTI(index), val);
1111                 break;
1112         case TEMP_PWM_CTFS:
1113                 val = SENSORS_LIMIT(val, 0, 0x7f);
1114                 w83795_write(client, W83795_REG_CTFS(index), val);
1115                 break;
1116         case TEMP_PWM_HCT:
1117                 val = SENSORS_LIMIT(val, 0, 0x0f);
1118                 tmp = w83795_read(client, W83795_REG_HT(index));
1119                 tmp &= 0x0f;
1120                 tmp |= (val << 4) & 0xf0;
1121                 w83795_write(client, W83795_REG_HT(index), tmp);
1122                 break;
1123         case TEMP_PWM_HOT:
1124                 val = SENSORS_LIMIT(val, 0, 0x0f);
1125                 tmp = w83795_read(client, W83795_REG_HT(index));
1126                 tmp &= 0xf0;
1127                 tmp |= val & 0x0f;
1128                 w83795_write(client, W83795_REG_HT(index), tmp);
1129                 break;
1130         }
1131         data->pwm_temp[index][nr] = val;
1132         mutex_unlock(&data->update_lock);
1133
1134         return count;
1135 }
1136
1137 static ssize_t
1138 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1139 {
1140         struct i2c_client *client = to_i2c_client(dev);
1141         struct w83795_data *data = i2c_get_clientdata(client);
1142         struct sensor_device_attribute_2 *sensor_attr =
1143             to_sensor_dev_attr_2(attr);
1144         int nr = sensor_attr->nr;
1145         int index = sensor_attr->index;
1146
1147         return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1148 }
1149
1150 static ssize_t
1151 store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1152           const char *buf, size_t count)
1153 {
1154         struct i2c_client *client = to_i2c_client(dev);
1155         struct w83795_data *data = i2c_get_clientdata(client);
1156         struct sensor_device_attribute_2 *sensor_attr =
1157             to_sensor_dev_attr_2(attr);
1158         int nr = sensor_attr->nr;
1159         int index = sensor_attr->index;
1160         unsigned long val;
1161
1162         if (strict_strtoul(buf, 10, &val) < 0)
1163                 return -EINVAL;
1164
1165         mutex_lock(&data->update_lock);
1166         w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1167         data->sf4_reg[index][SF4_PWM][nr] = val;
1168         mutex_unlock(&data->update_lock);
1169
1170         return count;
1171 }
1172
1173 static ssize_t
1174 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1175 {
1176         struct i2c_client *client = to_i2c_client(dev);
1177         struct w83795_data *data = i2c_get_clientdata(client);
1178         struct sensor_device_attribute_2 *sensor_attr =
1179             to_sensor_dev_attr_2(attr);
1180         int nr = sensor_attr->nr;
1181         int index = sensor_attr->index;
1182
1183         return sprintf(buf, "%u\n",
1184                 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1185 }
1186
1187 static ssize_t
1188 store_sf4_temp(struct device *dev, struct device_attribute *attr,
1189           const char *buf, size_t count)
1190 {
1191         struct i2c_client *client = to_i2c_client(dev);
1192         struct w83795_data *data = i2c_get_clientdata(client);
1193         struct sensor_device_attribute_2 *sensor_attr =
1194             to_sensor_dev_attr_2(attr);
1195         int nr = sensor_attr->nr;
1196         int index = sensor_attr->index;
1197         unsigned long val;
1198
1199         if (strict_strtoul(buf, 10, &val) < 0)
1200                 return -EINVAL;
1201         val /= 1000;
1202
1203         mutex_lock(&data->update_lock);
1204         w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1205         data->sf4_reg[index][SF4_TEMP][nr] = val;
1206         mutex_unlock(&data->update_lock);
1207
1208         return count;
1209 }
1210
1211
1212 static ssize_t
1213 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1214 {
1215         struct sensor_device_attribute_2 *sensor_attr =
1216             to_sensor_dev_attr_2(attr);
1217         int nr = sensor_attr->nr;
1218         int index = sensor_attr->index;
1219         struct w83795_data *data = w83795_update_device(dev);
1220         long temp = temp_from_reg(data->temp[index][nr]);
1221
1222         if (TEMP_READ == nr)
1223                 temp += (data->temp_read_vrlsb[index] >> 6) * 250;
1224         return sprintf(buf, "%ld\n", temp);
1225 }
1226
1227 static ssize_t
1228 store_temp(struct device *dev, struct device_attribute *attr,
1229            const char *buf, size_t count)
1230 {
1231         struct sensor_device_attribute_2 *sensor_attr =
1232             to_sensor_dev_attr_2(attr);
1233         int nr = sensor_attr->nr;
1234         int index = sensor_attr->index;
1235         struct i2c_client *client = to_i2c_client(dev);
1236         struct w83795_data *data = i2c_get_clientdata(client);
1237         long tmp;
1238
1239         if (strict_strtol(buf, 10, &tmp) < 0)
1240                 return -EINVAL;
1241
1242         mutex_lock(&data->update_lock);
1243         data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1244         w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1245         mutex_unlock(&data->update_lock);
1246         return count;
1247 }
1248
1249
1250 static ssize_t
1251 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1252 {
1253         struct i2c_client *client = to_i2c_client(dev);
1254         struct w83795_data *data = i2c_get_clientdata(client);
1255         int tmp;
1256
1257         if (data->enable_dts & 2)
1258                 tmp = 5;
1259         else
1260                 tmp = 6;
1261
1262         return sprintf(buf, "%d\n", tmp);
1263 }
1264
1265 static ssize_t
1266 show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1267 {
1268         struct sensor_device_attribute_2 *sensor_attr =
1269             to_sensor_dev_attr_2(attr);
1270         int index = sensor_attr->index;
1271         struct w83795_data *data = w83795_update_device(dev);
1272         long temp = temp_from_reg(data->dts[index]);
1273
1274         temp += (data->dts_read_vrlsb[index] >> 6) * 250;
1275         return sprintf(buf, "%ld\n", temp);
1276 }
1277
1278 static ssize_t
1279 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1280 {
1281         struct sensor_device_attribute_2 *sensor_attr =
1282             to_sensor_dev_attr_2(attr);
1283         int nr = sensor_attr->nr;
1284         struct i2c_client *client = to_i2c_client(dev);
1285         struct w83795_data *data = i2c_get_clientdata(client);
1286         long temp = temp_from_reg(data->dts_ext[nr]);
1287
1288         return sprintf(buf, "%ld\n", temp);
1289 }
1290
1291 static ssize_t
1292 store_dts_ext(struct device *dev, struct device_attribute *attr,
1293            const char *buf, size_t count)
1294 {
1295         struct sensor_device_attribute_2 *sensor_attr =
1296             to_sensor_dev_attr_2(attr);
1297         int nr = sensor_attr->nr;
1298         struct i2c_client *client = to_i2c_client(dev);
1299         struct w83795_data *data = i2c_get_clientdata(client);
1300         long tmp;
1301
1302         if (strict_strtol(buf, 10, &tmp) < 0)
1303                 return -EINVAL;
1304
1305         mutex_lock(&data->update_lock);
1306         data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1307         w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1308         mutex_unlock(&data->update_lock);
1309         return count;
1310 }
1311
1312
1313 static ssize_t
1314 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1315 {
1316         struct i2c_client *client = to_i2c_client(dev);
1317         struct w83795_data *data = i2c_get_clientdata(client);
1318         struct sensor_device_attribute_2 *sensor_attr =
1319             to_sensor_dev_attr_2(attr);
1320         int index = sensor_attr->index;
1321         int tmp;
1322
1323         if (data->temp_mode & (1 << index))
1324                 tmp = 3;        /* Thermal diode */
1325         else
1326                 tmp = 4;        /* Thermistor */
1327
1328         return sprintf(buf, "%d\n", tmp);
1329 }
1330
1331 /* Only for temp1-4 (temp5-6 can only be thermistor) */
1332 static ssize_t
1333 store_temp_mode(struct device *dev, struct device_attribute *attr,
1334                 const char *buf, size_t count)
1335 {
1336         struct i2c_client *client = to_i2c_client(dev);
1337         struct w83795_data *data = i2c_get_clientdata(client);
1338         struct sensor_device_attribute_2 *sensor_attr =
1339             to_sensor_dev_attr_2(attr);
1340         int index = sensor_attr->index;
1341         int reg_shift;
1342         unsigned long val;
1343         u8 tmp;
1344
1345         if (strict_strtoul(buf, 10, &val) < 0)
1346                 return -EINVAL;
1347         if ((val != 4) && (val != 3))
1348                 return -EINVAL;
1349
1350         mutex_lock(&data->update_lock);
1351         if (val == 3) {
1352                 /* Thermal diode */
1353                 val = 0x01;
1354                 data->temp_mode |= 1 << index;
1355         } else if (val == 4) {
1356                 /* Thermistor */
1357                 val = 0x03;
1358                 data->temp_mode &= ~(1 << index);
1359         }
1360
1361         reg_shift = 2 * index;
1362         tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1363         tmp &= ~(0x03 << reg_shift);
1364         tmp |= val << reg_shift;
1365         w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1366
1367         mutex_unlock(&data->update_lock);
1368         return count;
1369 }
1370
1371
1372 /* show/store VIN */
1373 static ssize_t
1374 show_in(struct device *dev, struct device_attribute *attr, char *buf)
1375 {
1376         struct sensor_device_attribute_2 *sensor_attr =
1377             to_sensor_dev_attr_2(attr);
1378         int nr = sensor_attr->nr;
1379         int index = sensor_attr->index;
1380         struct w83795_data *data = w83795_update_device(dev);
1381         u16 val = data->in[index][nr];
1382         u8 lsb_idx;
1383
1384         switch (nr) {
1385         case IN_READ:
1386                 /* calculate this value again by sensors as sensors3.conf */
1387                 if ((index >= 17) &&
1388                     !((data->has_gain >> (index - 17)) & 1))
1389                         val *= 8;
1390                 break;
1391         case IN_MAX:
1392         case IN_LOW:
1393                 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1394                 val <<= 2;
1395                 val |= (data->in_lsb[lsb_idx][nr] >>
1396                         IN_LSB_SHIFT_IDX[lsb_idx][IN_LSB_SHIFT]) & 0x03;
1397                 if ((index >= 17) &&
1398                     !((data->has_gain >> (index - 17)) & 1))
1399                         val *= 8;
1400                 break;
1401         }
1402         val = in_from_reg(index, val);
1403
1404         return sprintf(buf, "%d\n", val);
1405 }
1406
1407 static ssize_t
1408 store_in(struct device *dev, struct device_attribute *attr,
1409          const char *buf, size_t count)
1410 {
1411         struct sensor_device_attribute_2 *sensor_attr =
1412             to_sensor_dev_attr_2(attr);
1413         int nr = sensor_attr->nr;
1414         int index = sensor_attr->index;
1415         struct i2c_client *client = to_i2c_client(dev);
1416         struct w83795_data *data = i2c_get_clientdata(client);
1417         unsigned long val;
1418         u8 tmp;
1419         u8 lsb_idx;
1420
1421         if (strict_strtoul(buf, 10, &val) < 0)
1422                 return -EINVAL;
1423         val = in_to_reg(index, val);
1424
1425         if ((index >= 17) &&
1426             !((data->has_gain >> (index - 17)) & 1))
1427                 val /= 8;
1428         val = SENSORS_LIMIT(val, 0, 0x3FF);
1429         mutex_lock(&data->update_lock);
1430
1431         lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1432         tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1433         tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1434         tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1435         w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1436         data->in_lsb[lsb_idx][nr] = tmp;
1437
1438         tmp = (val >> 2) & 0xff;
1439         w83795_write(client, W83795_REG_IN[index][nr], tmp);
1440         data->in[index][nr] = tmp;
1441
1442         mutex_unlock(&data->update_lock);
1443         return count;
1444 }
1445
1446
1447 static ssize_t
1448 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1449 {
1450         struct sensor_device_attribute_2 *sensor_attr =
1451             to_sensor_dev_attr_2(attr);
1452         int nr = sensor_attr->nr;
1453         struct i2c_client *client = to_i2c_client(dev);
1454         struct w83795_data *data = i2c_get_clientdata(client);
1455         u16 val = data->setup_pwm[nr];
1456
1457         switch (nr) {
1458         case SETUP_PWM_UPTIME:
1459         case SETUP_PWM_DOWNTIME:
1460                 val = time_from_reg(val);
1461                 break;
1462         }
1463
1464         return sprintf(buf, "%d\n", val);
1465 }
1466
1467 static ssize_t
1468 store_sf_setup(struct device *dev, struct device_attribute *attr,
1469          const char *buf, size_t count)
1470 {
1471         struct sensor_device_attribute_2 *sensor_attr =
1472             to_sensor_dev_attr_2(attr);
1473         int nr = sensor_attr->nr;
1474         struct i2c_client *client = to_i2c_client(dev);
1475         struct w83795_data *data = i2c_get_clientdata(client);
1476         unsigned long val;
1477
1478         if (strict_strtoul(buf, 10, &val) < 0)
1479                 return -EINVAL;
1480
1481         switch (nr) {
1482         case SETUP_PWM_DEFAULT:
1483                 val = SENSORS_LIMIT(val, 0, 0xff);
1484                 break;
1485         case SETUP_PWM_UPTIME:
1486         case SETUP_PWM_DOWNTIME:
1487                 val = time_to_reg(val);
1488                 if (val == 0)
1489                         return -EINVAL;
1490                 break;
1491         }
1492
1493         mutex_lock(&data->update_lock);
1494         data->setup_pwm[nr] = val;
1495         w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1496         mutex_unlock(&data->update_lock);
1497         return count;
1498 }
1499
1500
1501 #define NOT_USED                        -1
1502
1503 /* Don't change the attribute order, _max and _min are accessed by index
1504  * somewhere else in the code */
1505 #define SENSOR_ATTR_IN(index) {                                         \
1506         SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL,        \
1507                 IN_READ, index), \
1508         SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in,      \
1509                 store_in, IN_MAX, index),                               \
1510         SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in,      \
1511                 store_in, IN_LOW, index),                               \
1512         SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep,      \
1513                 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1514         SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO,              \
1515                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1516                 index + ((index > 14) ? 1 : 0)) }
1517
1518 #define SENSOR_ATTR_FAN(index) {                                        \
1519         SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan,            \
1520                 NULL, FAN_INPUT, index - 1), \
1521         SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO,              \
1522                 show_fan, store_fan_min, FAN_MIN, index - 1),   \
1523         SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep,     \
1524                 NULL, ALARM_STATUS, index + 31),                        \
1525         SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO,             \
1526                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) }
1527
1528 #define SENSOR_ATTR_PWM(index) {                                        \
1529         SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm,          \
1530                 store_pwm, PWM_OUTPUT, index - 1),                      \
1531         SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO,          \
1532                 show_pwm, store_pwm, PWM_NONSTOP, index - 1),           \
1533         SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO,            \
1534                 show_pwm, store_pwm, PWM_START, index - 1),             \
1535         SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO,        \
1536                 show_pwm, store_pwm, PWM_STOP_TIME, index - 1),  \
1537         SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO,     \
1538                 show_pwm, store_pwm, PWM_FREQ, index - 1),       \
1539         SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO,           \
1540                 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
1541         SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
1542                 show_fanin, store_fanin, FANIN_TARGET, index - 1) }
1543
1544 #define SENSOR_ATTR_DTS(index) {                                        \
1545         SENSOR_ATTR_2(temp##index##_type, S_IRUGO ,             \
1546                 show_dts_mode, NULL, NOT_USED, index - 7),      \
1547         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts,           \
1548                 NULL, NOT_USED, index - 7),                             \
1549         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \
1550                 store_dts_ext, DTS_CRIT, NOT_USED),                     \
1551         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1552                 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED),  \
1553         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1554                 store_dts_ext, DTS_WARN, NOT_USED),                     \
1555         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1556                 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED),  \
1557         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1558                 show_alarm_beep, NULL, ALARM_STATUS, index + 17),       \
1559         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1560                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
1561
1562 #define SENSOR_ATTR_TEMP(index) {                                       \
1563         SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 4 ? S_IWUSR : 0), \
1564                 show_temp_mode, store_temp_mode, NOT_USED, index - 1),  \
1565         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp,          \
1566                 NULL, TEMP_READ, index - 1),                            \
1567         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \
1568                 store_temp, TEMP_CRIT, index - 1),                      \
1569         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1570                 show_temp, store_temp, TEMP_CRIT_HYST, index - 1),      \
1571         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp,  \
1572                 store_temp, TEMP_WARN, index - 1),                      \
1573         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1574                 show_temp, store_temp, TEMP_WARN_HYST, index - 1),      \
1575         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1576                 show_alarm_beep, NULL, ALARM_STATUS,                    \
1577                 index + (index > 4 ? 11 : 17)),                         \
1578         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1579                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1580                 index + (index > 4 ? 11 : 17)),                         \
1581         SENSOR_ATTR_2(temp##index##_source_sel, S_IWUSR | S_IRUGO,      \
1582                 show_temp_src, store_temp_src, NOT_USED, index - 1),    \
1583         SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO,      \
1584                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1585                 TEMP_PWM_ENABLE, index - 1),                            \
1586         SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1587                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1588                 TEMP_PWM_FAN_MAP, index - 1),                           \
1589         SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO,         \
1590                 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1591         SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO,            \
1592                 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1593         SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO,       \
1594                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1595         SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO,  \
1596                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1597         SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1598                 show_sf4_pwm, store_sf4_pwm, 0, index - 1),             \
1599         SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1600                 show_sf4_pwm, store_sf4_pwm, 1, index - 1),             \
1601         SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1602                 show_sf4_pwm, store_sf4_pwm, 2, index - 1),             \
1603         SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1604                 show_sf4_pwm, store_sf4_pwm, 3, index - 1),             \
1605         SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1606                 show_sf4_pwm, store_sf4_pwm, 4, index - 1),             \
1607         SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1608                 show_sf4_pwm, store_sf4_pwm, 5, index - 1),             \
1609         SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1610                 show_sf4_pwm, store_sf4_pwm, 6, index - 1),             \
1611         SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1612                 show_sf4_temp, store_sf4_temp, 0, index - 1),           \
1613         SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1614                 show_sf4_temp, store_sf4_temp, 1, index - 1),           \
1615         SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1616                 show_sf4_temp, store_sf4_temp, 2, index - 1),           \
1617         SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1618                 show_sf4_temp, store_sf4_temp, 3, index - 1),           \
1619         SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1620                 show_sf4_temp, store_sf4_temp, 4, index - 1),           \
1621         SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1622                 show_sf4_temp, store_sf4_temp, 5, index - 1),           \
1623         SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1624                 show_sf4_temp, store_sf4_temp, 6, index - 1) }
1625
1626
1627 static struct sensor_device_attribute_2 w83795_in[][5] = {
1628         SENSOR_ATTR_IN(0),
1629         SENSOR_ATTR_IN(1),
1630         SENSOR_ATTR_IN(2),
1631         SENSOR_ATTR_IN(3),
1632         SENSOR_ATTR_IN(4),
1633         SENSOR_ATTR_IN(5),
1634         SENSOR_ATTR_IN(6),
1635         SENSOR_ATTR_IN(7),
1636         SENSOR_ATTR_IN(8),
1637         SENSOR_ATTR_IN(9),
1638         SENSOR_ATTR_IN(10),
1639         SENSOR_ATTR_IN(11),
1640         SENSOR_ATTR_IN(12),
1641         SENSOR_ATTR_IN(13),
1642         SENSOR_ATTR_IN(14),
1643         SENSOR_ATTR_IN(15),
1644         SENSOR_ATTR_IN(16),
1645         SENSOR_ATTR_IN(17),
1646         SENSOR_ATTR_IN(18),
1647         SENSOR_ATTR_IN(19),
1648         SENSOR_ATTR_IN(20),
1649 };
1650
1651 static const struct sensor_device_attribute_2 w83795_fan[][4] = {
1652         SENSOR_ATTR_FAN(1),
1653         SENSOR_ATTR_FAN(2),
1654         SENSOR_ATTR_FAN(3),
1655         SENSOR_ATTR_FAN(4),
1656         SENSOR_ATTR_FAN(5),
1657         SENSOR_ATTR_FAN(6),
1658         SENSOR_ATTR_FAN(7),
1659         SENSOR_ATTR_FAN(8),
1660         SENSOR_ATTR_FAN(9),
1661         SENSOR_ATTR_FAN(10),
1662         SENSOR_ATTR_FAN(11),
1663         SENSOR_ATTR_FAN(12),
1664         SENSOR_ATTR_FAN(13),
1665         SENSOR_ATTR_FAN(14),
1666 };
1667
1668 static const struct sensor_device_attribute_2 w83795_temp[][29] = {
1669         SENSOR_ATTR_TEMP(1),
1670         SENSOR_ATTR_TEMP(2),
1671         SENSOR_ATTR_TEMP(3),
1672         SENSOR_ATTR_TEMP(4),
1673         SENSOR_ATTR_TEMP(5),
1674         SENSOR_ATTR_TEMP(6),
1675 };
1676
1677 static const struct sensor_device_attribute_2 w83795_dts[][8] = {
1678         SENSOR_ATTR_DTS(7),
1679         SENSOR_ATTR_DTS(8),
1680         SENSOR_ATTR_DTS(9),
1681         SENSOR_ATTR_DTS(10),
1682         SENSOR_ATTR_DTS(11),
1683         SENSOR_ATTR_DTS(12),
1684         SENSOR_ATTR_DTS(13),
1685         SENSOR_ATTR_DTS(14),
1686 };
1687
1688 static const struct sensor_device_attribute_2 w83795_pwm[][7] = {
1689         SENSOR_ATTR_PWM(1),
1690         SENSOR_ATTR_PWM(2),
1691         SENSOR_ATTR_PWM(3),
1692         SENSOR_ATTR_PWM(4),
1693         SENSOR_ATTR_PWM(5),
1694         SENSOR_ATTR_PWM(6),
1695         SENSOR_ATTR_PWM(7),
1696         SENSOR_ATTR_PWM(8),
1697 };
1698
1699 static const struct sensor_device_attribute_2 sda_single_files[] = {
1700         SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep,
1701                       store_chassis_clear, ALARM_STATUS, 46),
1702         SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
1703                       store_beep, BEEP_ENABLE, 47),
1704         SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1705                 store_fanin, FANIN_TOL, NOT_USED),
1706         SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1707                       store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1708         SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1709                       store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1710         SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1711                       store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1712 };
1713
1714 /*
1715  * Driver interface
1716  */
1717
1718 static void w83795_init_client(struct i2c_client *client)
1719 {
1720         struct w83795_data *data = i2c_get_clientdata(client);
1721         static const u16 clkin[4] = {   /* in kHz */
1722                 14318, 24000, 33333, 48000
1723         };
1724         u8 config;
1725
1726         if (reset)
1727                 w83795_write(client, W83795_REG_CONFIG, 0x80);
1728
1729         /* Start monitoring if needed */
1730         config = w83795_read(client, W83795_REG_CONFIG);
1731         if (!(config & W83795_REG_CONFIG_START)) {
1732                 dev_info(&client->dev, "Enabling monitoring operations\n");
1733                 w83795_write(client, W83795_REG_CONFIG,
1734                              config | W83795_REG_CONFIG_START);
1735         }
1736
1737         data->clkin = clkin[(config >> 3) & 0x3];
1738         dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin);
1739 }
1740
1741 static int w83795_get_device_id(struct i2c_client *client)
1742 {
1743         int device_id;
1744
1745         device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID);
1746
1747         /* Special case for rev. A chips; can't be checked first because later
1748            revisions emulate this for compatibility */
1749         if (device_id < 0 || (device_id & 0xf0) != 0x50) {
1750                 int alt_id;
1751
1752                 alt_id = i2c_smbus_read_byte_data(client,
1753                                                   W83795_REG_DEVICEID_A);
1754                 if (alt_id == 0x50)
1755                         device_id = alt_id;
1756         }
1757
1758         return device_id;
1759 }
1760
1761 /* Return 0 if detection is successful, -ENODEV otherwise */
1762 static int w83795_detect(struct i2c_client *client,
1763                          struct i2c_board_info *info)
1764 {
1765         int bank, vendor_id, device_id, expected, i2c_addr, config;
1766         struct i2c_adapter *adapter = client->adapter;
1767         unsigned short address = client->addr;
1768         const char *chip_name;
1769
1770         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1771                 return -ENODEV;
1772         bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1773         if (bank < 0 || (bank & 0x7c)) {
1774                 dev_dbg(&adapter->dev,
1775                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1776                         address, "bank");
1777                 return -ENODEV;
1778         }
1779
1780         /* Check Nuvoton vendor ID */
1781         vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID);
1782         expected = bank & 0x80 ? 0x5c : 0xa3;
1783         if (vendor_id != expected) {
1784                 dev_dbg(&adapter->dev,
1785                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1786                         address, "vendor id");
1787                 return -ENODEV;
1788         }
1789
1790         /* Check device ID */
1791         device_id = w83795_get_device_id(client) |
1792                     (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8);
1793         if ((device_id >> 4) != 0x795) {
1794                 dev_dbg(&adapter->dev,
1795                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1796                         address, "device id\n");
1797                 return -ENODEV;
1798         }
1799
1800         /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1801            should match */
1802         if ((bank & 0x07) == 0) {
1803                 i2c_addr = i2c_smbus_read_byte_data(client,
1804                                                     W83795_REG_I2C_ADDR);
1805                 if ((i2c_addr & 0x7f) != address) {
1806                         dev_dbg(&adapter->dev,
1807                                 "w83795: Detection failed at addr 0x%02hx, "
1808                                 "check %s\n", address, "i2c addr");
1809                         return -ENODEV;
1810                 }
1811         }
1812
1813         /* Check 795 chip type: 795G or 795ADG
1814            Usually we don't write to chips during detection, but here we don't
1815            quite have the choice; hopefully it's OK, we are about to return
1816            success anyway */
1817         if ((bank & 0x07) != 0)
1818                 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
1819                                           bank & ~0x07);
1820         config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG);
1821         if (config & W83795_REG_CONFIG_CONFIG48)
1822                 chip_name = "w83795adg";
1823         else
1824                 chip_name = "w83795g";
1825
1826         strlcpy(info->type, chip_name, I2C_NAME_SIZE);
1827         dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name,
1828                  'A' + (device_id & 0xf), address);
1829
1830         return 0;
1831 }
1832
1833 static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
1834                                const struct device_attribute *))
1835 {
1836         struct w83795_data *data = dev_get_drvdata(dev);
1837         int err, i, j;
1838
1839         for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
1840                 if (!(data->has_in & (1 << i)))
1841                         continue;
1842                 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) {
1843                         err = fn(dev, &w83795_in[i][j].dev_attr);
1844                         if (err)
1845                                 return err;
1846                 }
1847         }
1848
1849         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
1850                 if (!(data->has_fan & (1 << i)))
1851                         continue;
1852                 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) {
1853                         err = fn(dev, &w83795_fan[i][j].dev_attr);
1854                         if (err)
1855                                 return err;
1856                 }
1857         }
1858
1859         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1860                 err = fn(dev, &sda_single_files[i].dev_attr);
1861                 if (err)
1862                         return err;
1863         }
1864
1865         for (i = 0; i < data->has_pwm; i++) {
1866                 for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) {
1867                         err = fn(dev, &w83795_pwm[i][j].dev_attr);
1868                         if (err)
1869                                 return err;
1870                 }
1871         }
1872
1873         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
1874                 if (!(data->has_temp & (1 << i)))
1875                         continue;
1876                 for (j = 0; j < ARRAY_SIZE(w83795_temp[0]); j++) {
1877                         err = fn(dev, &w83795_temp[i][j].dev_attr);
1878                         if (err)
1879                                 return err;
1880                 }
1881         }
1882
1883         if (data->enable_dts != 0) {
1884                 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
1885                         if (!(data->has_dts & (1 << i)))
1886                                 continue;
1887                         for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) {
1888                                 err = fn(dev, &w83795_dts[i][j].dev_attr);
1889                                 if (err)
1890                                         return err;
1891                         }
1892                 }
1893         }
1894
1895         return 0;
1896 }
1897
1898 /* We need a wrapper that fits in w83795_handle_files */
1899 static int device_remove_file_wrapper(struct device *dev,
1900                                       const struct device_attribute *attr)
1901 {
1902         device_remove_file(dev, attr);
1903         return 0;
1904 }
1905
1906 static void w83795_check_dynamic_in_limits(struct i2c_client *client)
1907 {
1908         struct w83795_data *data = i2c_get_clientdata(client);
1909         u8 vid_ctl;
1910         int i, err_max, err_min;
1911
1912         vid_ctl = w83795_read(client, W83795_REG_VID_CTRL);
1913
1914         /* Return immediately if VRM isn't configured */
1915         if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07)
1916                 return;
1917
1918         data->has_dyn_in = (vid_ctl >> 3) & 0x07;
1919         for (i = 0; i < 2; i++) {
1920                 if (!(data->has_dyn_in & (1 << i)))
1921                         continue;
1922
1923                 /* Voltage limits in dynamic mode, switch to read-only */
1924                 err_max = sysfs_chmod_file(&client->dev.kobj,
1925                                            &w83795_in[i][2].dev_attr.attr,
1926                                            S_IRUGO);
1927                 err_min = sysfs_chmod_file(&client->dev.kobj,
1928                                            &w83795_in[i][3].dev_attr.attr,
1929                                            S_IRUGO);
1930                 if (err_max || err_min)
1931                         dev_warn(&client->dev, "Failed to set in%d limits "
1932                                  "read-only (%d, %d)\n", i, err_max, err_min);
1933                 else
1934                         dev_info(&client->dev, "in%d limits set dynamically "
1935                                  "from VID\n", i);
1936         }
1937 }
1938
1939 /* Check pins that can be used for either temperature or voltage monitoring */
1940 static void w83795_apply_temp_config(struct w83795_data *data, u8 config,
1941                                      int temp_chan, int in_chan)
1942 {
1943         /* config is a 2-bit value */
1944         switch (config) {
1945         case 0x2: /* Voltage monitoring */
1946                 data->has_in |= 1 << in_chan;
1947                 break;
1948         case 0x1: /* Thermal diode */
1949                 if (temp_chan >= 4)
1950                         break;
1951                 data->temp_mode |= 1 << temp_chan;
1952                 /* fall through */
1953         case 0x3: /* Thermistor */
1954                 data->has_temp |= 1 << temp_chan;
1955                 break;
1956         }
1957 }
1958
1959 static int w83795_probe(struct i2c_client *client,
1960                         const struct i2c_device_id *id)
1961 {
1962         int i;
1963         u8 tmp;
1964         struct device *dev = &client->dev;
1965         struct w83795_data *data;
1966         int err;
1967
1968         data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL);
1969         if (!data) {
1970                 err = -ENOMEM;
1971                 goto exit;
1972         }
1973
1974         i2c_set_clientdata(client, data);
1975         data->chip_type = id->driver_data;
1976         data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1977         mutex_init(&data->update_lock);
1978
1979         /* Initialize the chip */
1980         w83795_init_client(client);
1981
1982         /* Check which voltages and fans are present */
1983         data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1)
1984                      | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8);
1985         data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1)
1986                       | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8);
1987
1988         /* Check which analog temperatures and extra voltages are present */
1989         tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
1990         if (tmp & 0x20)
1991                 data->enable_dts = 1;
1992         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16);
1993         w83795_apply_temp_config(data, tmp & 0x3, 4, 15);
1994         tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1995         w83795_apply_temp_config(data, tmp >> 6, 3, 20);
1996         w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19);
1997         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18);
1998         w83795_apply_temp_config(data, tmp & 0x3, 0, 17);
1999
2000         /* Check DTS enable status */
2001         if (data->enable_dts) {
2002                 if (1 & w83795_read(client, W83795_REG_DTSC))
2003                         data->enable_dts |= 2;
2004                 data->has_dts = w83795_read(client, W83795_REG_DTSE);
2005         }
2006
2007         /* Report PECI Tbase values */
2008         if (data->enable_dts == 1) {
2009                 for (i = 0; i < 8; i++) {
2010                         if (!(data->has_dts & (1 << i)))
2011                                 continue;
2012                         tmp = w83795_read(client, W83795_REG_PECI_TBASE(i));
2013                         dev_info(&client->dev,
2014                                  "PECI agent %d Tbase temperature: %u\n",
2015                                  i + 1, (unsigned int)tmp & 0x7f);
2016                 }
2017         }
2018
2019         data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
2020         w83795_update_limits(client);
2021
2022         /* pwm and smart fan */
2023         if (data->chip_type == w83795g)
2024                 data->has_pwm = 8;
2025         else
2026                 data->has_pwm = 2;
2027         w83795_update_pwm_config(client);
2028
2029         err = w83795_handle_files(dev, device_create_file);
2030         if (err)
2031                 goto exit_remove;
2032
2033         if (data->chip_type == w83795g)
2034                 w83795_check_dynamic_in_limits(client);
2035
2036         data->hwmon_dev = hwmon_device_register(dev);
2037         if (IS_ERR(data->hwmon_dev)) {
2038                 err = PTR_ERR(data->hwmon_dev);
2039                 goto exit_remove;
2040         }
2041
2042         return 0;
2043
2044 exit_remove:
2045         w83795_handle_files(dev, device_remove_file_wrapper);
2046         kfree(data);
2047 exit:
2048         return err;
2049 }
2050
2051 static int w83795_remove(struct i2c_client *client)
2052 {
2053         struct w83795_data *data = i2c_get_clientdata(client);
2054
2055         hwmon_device_unregister(data->hwmon_dev);
2056         w83795_handle_files(&client->dev, device_remove_file_wrapper);
2057         kfree(data);
2058
2059         return 0;
2060 }
2061
2062
2063 static const struct i2c_device_id w83795_id[] = {
2064         { "w83795g", w83795g },
2065         { "w83795adg", w83795adg },
2066         { }
2067 };
2068 MODULE_DEVICE_TABLE(i2c, w83795_id);
2069
2070 static struct i2c_driver w83795_driver = {
2071         .driver = {
2072                    .name = "w83795",
2073         },
2074         .probe          = w83795_probe,
2075         .remove         = w83795_remove,
2076         .id_table       = w83795_id,
2077
2078         .class          = I2C_CLASS_HWMON,
2079         .detect         = w83795_detect,
2080         .address_list   = normal_i2c,
2081 };
2082
2083 static int __init sensors_w83795_init(void)
2084 {
2085         return i2c_add_driver(&w83795_driver);
2086 }
2087
2088 static void __exit sensors_w83795_exit(void)
2089 {
2090         i2c_del_driver(&w83795_driver);
2091 }
2092
2093 MODULE_AUTHOR("Wei Song");
2094 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2095 MODULE_LICENSE("GPL");
2096
2097 module_init(sensors_w83795_init);
2098 module_exit(sensors_w83795_exit);