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_CTRL_DISABLE               0
  70 #define TEMP_CTRL_TD                    1
  71 #define TEMP_CTRL_VSEN                  2
  72 #define TEMP_CTRL_TR                    3
  73 #define TEMP_CTRL_SHIFT                 4
  74 #define TEMP_CTRL_HASIN_SHIFT           5
  75 /* temp mode may effect VSEN17-12 (in20-15) */
  76 static const u16 W83795_REG_TEMP_CTRL[][6] = {
  77         /* Disable, TD, VSEN, TR, register shift value, has_in shift num */
  78         {0x00, 0x01, 0x02, 0x03, 0, 17},        /* TR1 */
  79         {0x00, 0x04, 0x08, 0x0C, 2, 18},        /* TR2 */
  80         {0x00, 0x10, 0x20, 0x30, 4, 19},        /* TR3 */
  81         {0x00, 0x40, 0x80, 0xC0, 6, 20},        /* TR4 */
  82         {0x00, 0x00, 0x02, 0x03, 0, 15},        /* TR5 */
  83         {0x00, 0x00, 0x08, 0x0C, 2, 16},        /* TR6 */
  84 };
  85
  86 #define TEMP_READ                       0
  87 #define TEMP_CRIT                       1
  88 #define TEMP_CRIT_HYST                  2
  89 #define TEMP_WARN                       3
  90 #define TEMP_WARN_HYST                  4
  91 /* only crit and crit_hyst affect real-time alarm status
  92  * current crit crit_hyst warn warn_hyst */
  93 static const u16 W83795_REG_TEMP[][5] = {
  94         {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
  95         {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
  96         {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
  97         {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
  98         {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
  99         {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
 100 };
 101
 102 #define IN_READ                         0
 103 #define IN_MAX                          1
 104 #define IN_LOW                          2
 105 static const u16 W83795_REG_IN[][3] = {
 106         /* Current, HL, LL */
 107         {0x10, 0x70, 0x71},     /* VSEN1 */
 108         {0x11, 0x72, 0x73},     /* VSEN2 */
 109         {0x12, 0x74, 0x75},     /* VSEN3 */
 110         {0x13, 0x76, 0x77},     /* VSEN4 */
 111         {0x14, 0x78, 0x79},     /* VSEN5 */
 112         {0x15, 0x7a, 0x7b},     /* VSEN6 */
 113         {0x16, 0x7c, 0x7d},     /* VSEN7 */
 114         {0x17, 0x7e, 0x7f},     /* VSEN8 */
 115         {0x18, 0x80, 0x81},     /* VSEN9 */
 116         {0x19, 0x82, 0x83},     /* VSEN10 */
 117         {0x1A, 0x84, 0x85},     /* VSEN11 */
 118         {0x1B, 0x86, 0x87},     /* VTT */
 119         {0x1C, 0x88, 0x89},     /* 3VDD */
 120         {0x1D, 0x8a, 0x8b},     /* 3VSB */
 121         {0x1E, 0x8c, 0x8d},     /* VBAT */
 122         {0x1F, 0xa6, 0xa7},     /* VSEN12 */
 123         {0x20, 0xaa, 0xab},     /* VSEN13 */
 124         {0x21, 0x96, 0x97},     /* VSEN14 */
 125         {0x22, 0x9a, 0x9b},     /* VSEN15 */
 126         {0x23, 0x9e, 0x9f},     /* VSEN16 */
 127         {0x24, 0xa2, 0xa3},     /* VSEN17 */
 128 };
 129 #define W83795_REG_VRLSB                0x3C
 130
 131 static const u8 W83795_REG_IN_HL_LSB[] = {
 132         0x8e,   /* VSEN1-4 */
 133         0x90,   /* VSEN5-8 */
 134         0x92,   /* VSEN9-11 */
 135         0x94,   /* VTT, 3VDD, 3VSB, 3VBAT */
 136         0xa8,   /* VSEN12 */
 137         0xac,   /* VSEN13 */
 138         0x98,   /* VSEN14 */
 139         0x9c,   /* VSEN15 */
 140         0xa0,   /* VSEN16 */
 141         0xa4,   /* VSEN17 */
 142 };
 143
 144 #define IN_LSB_REG(index, type) \
 145         (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
 146         : (W83795_REG_IN_HL_LSB[(index)] + 1))
 147
 148 #define IN_LSB_REG_NUM                  10
 149
 150 #define IN_LSB_SHIFT                    0
 151 #define IN_LSB_IDX                      1
 152 static const u8 IN_LSB_SHIFT_IDX[][2] = {
 153         /* High/Low LSB shift, LSB No. */
 154         {0x00, 0x00},   /* VSEN1 */
 155         {0x02, 0x00},   /* VSEN2 */
 156         {0x04, 0x00},   /* VSEN3 */
 157         {0x06, 0x00},   /* VSEN4 */
 158         {0x00, 0x01},   /* VSEN5 */
 159         {0x02, 0x01},   /* VSEN6 */
 160         {0x04, 0x01},   /* VSEN7 */
 161         {0x06, 0x01},   /* VSEN8 */
 162         {0x00, 0x02},   /* VSEN9 */
 163         {0x02, 0x02},   /* VSEN10 */
 164         {0x04, 0x02},   /* VSEN11 */
 165         {0x00, 0x03},   /* VTT */
 166         {0x02, 0x03},   /* 3VDD */
 167         {0x04, 0x03},   /* 3VSB */
 168         {0x06, 0x03},   /* VBAT */
 169         {0x06, 0x04},   /* VSEN12 */
 170         {0x06, 0x05},   /* VSEN13 */
 171         {0x06, 0x06},   /* VSEN14 */
 172         {0x06, 0x07},   /* VSEN15 */
 173         {0x06, 0x08},   /* VSEN16 */
 174         {0x06, 0x09},   /* VSEN17 */
 175 };
 176
 177
 178 #define W83795_REG_FAN(index)           (0x2E + (index))
 179 #define W83795_REG_FAN_MIN_HL(index)    (0xB6 + (index))
 180 #define W83795_REG_FAN_MIN_LSB(index)   (0xC4 + (index) / 2)
 181 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
 182         (((index) & 1) ? 4 : 0)
 183
 184 #define W83795_REG_VID_CTRL             0x6A
 185
 186 #define ALARM_BEEP_REG_NUM              6
 187 #define W83795_REG_ALARM(index)         (0x41 + (index))
 188 #define W83795_REG_BEEP(index)          (0x50 + (index))
 189
 190 #define W83795_REG_CLR_CHASSIS          0x4D
 191
 192
 193 #define W83795_REG_TEMP_NUM             6
 194 #define W83795_REG_FCMS1                0x201
 195 #define W83795_REG_FCMS2                0x208
 196 #define W83795_REG_TFMR(index)          (0x202 + (index))
 197 #define W83795_REG_FOMC                 0x20F
 198
 199 #define W83795_REG_TSS(index)           (0x209 + (index))
 200
 201 #define PWM_OUTPUT                      0
 202 #define PWM_START                       1
 203 #define PWM_NONSTOP                     2
 204 #define PWM_STOP_TIME                   3
 205 #define PWM_FREQ                        4
 206 #define W83795_REG_PWM(index, nr) \
 207         (((nr) == 0 ? 0x210 : \
 208           (nr) == 1 ? 0x220 : \
 209           (nr) == 2 ? 0x228 : \
 210           (nr) == 3 ? 0x230 : 0x218) + (index))
 211
 212 #define W83795_REG_FTSH(index)          (0x240 + (index) * 2)
 213 #define W83795_REG_FTSL(index)          (0x241 + (index) * 2)
 214 #define W83795_REG_TFTS                 0x250
 215
 216 #define TEMP_PWM_TTTI                   0
 217 #define TEMP_PWM_CTFS                   1
 218 #define TEMP_PWM_HCT                    2
 219 #define TEMP_PWM_HOT                    3
 220 #define W83795_REG_TTTI(index)          (0x260 + (index))
 221 #define W83795_REG_CTFS(index)          (0x268 + (index))
 222 #define W83795_REG_HT(index)            (0x270 + (index))
 223
 224 #define SF4_TEMP                        0
 225 #define SF4_PWM                         1
 226 #define W83795_REG_SF4_TEMP(temp_num, index) \
 227         (0x280 + 0x10 * (temp_num) + (index))
 228 #define W83795_REG_SF4_PWM(temp_num, index) \
 229         (0x288 + 0x10 * (temp_num) + (index))
 230
 231 #define W83795_REG_DTSC                 0x301
 232 #define W83795_REG_DTSE                 0x302
 233 #define W83795_REG_DTS(index)           (0x26 + (index))
 234 #define W83795_REG_PECI_TBASE(index)    (0x320 + (index))
 235
 236 #define DTS_CRIT                        0
 237 #define DTS_CRIT_HYST                   1
 238 #define DTS_WARN                        2
 239 #define DTS_WARN_HYST                   3
 240 #define W83795_REG_DTS_EXT(index)       (0xB2 + (index))
 241
 242 #define SETUP_PWM_DEFAULT               0
 243 #define SETUP_PWM_UPTIME                1
 244 #define SETUP_PWM_DOWNTIME              2
 245 #define W83795_REG_SETUP_PWM(index)    (0x20C + (index))
 246
 247 static inline u16 in_from_reg(u8 index, u16 val)
 248 {
 249         /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */
 250         if (index >= 12 && index <= 14)
 251                 return val * 6;
 252         else
 253                 return val * 2;
 254 }
 255
 256 static inline u16 in_to_reg(u8 index, u16 val)
 257 {
 258         if (index >= 12 && index <= 14)
 259                 return val / 6;
 260         else
 261                 return val / 2;
 262 }
 263
 264 static inline unsigned long fan_from_reg(u16 val)
 265 {
 266         if ((val == 0xfff) || (val == 0))
 267                 return 0;
 268         return 1350000UL / val;
 269 }
 270
 271 static inline u16 fan_to_reg(long rpm)
 272 {
 273         if (rpm <= 0)
 274                 return 0x0fff;
 275         return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
 276 }
 277
 278 static inline unsigned long time_from_reg(u8 reg)
 279 {
 280         return reg * 100;
 281 }
 282
 283 static inline u8 time_to_reg(unsigned long val)
 284 {
 285         return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
 286 }
 287
 288 static inline long temp_from_reg(s8 reg)
 289 {
 290         return reg * 1000;
 291 }
 292
 293 static inline s8 temp_to_reg(long val, s8 min, s8 max)
 294 {
 295         return SENSORS_LIMIT(val / 1000, min, max);
 296 }
 297
 298 static const u16 pwm_freq_cksel0[16] = {
 299         1024, 512, 341, 256, 205, 171, 146, 128,
 300         85, 64, 32, 16, 8, 4, 2, 1
 301 };
 302
 303 static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin)
 304 {
 305         unsigned long base_clock;
 306
 307         if (reg & 0x80) {
 308                 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
 309                 return base_clock / ((reg & 0x7f) + 1);
 310         } else
 311                 return pwm_freq_cksel0[reg & 0x0f];
 312 }
 313
 314 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
 315 {
 316         unsigned long base_clock;
 317         u8 reg0, reg1;
 318         unsigned long best0, best1;
 319
 320         /* Best fit for cksel = 0 */
 321         for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) {
 322                 if (val > (pwm_freq_cksel0[reg0] +
 323                            pwm_freq_cksel0[reg0 + 1]) / 2)
 324                         break;
 325         }
 326         if (val < 375)  /* cksel = 1 can't beat this */
 327                 return reg0;
 328         best0 = pwm_freq_cksel0[reg0];
 329
 330         /* Best fit for cksel = 1 */
 331         base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
 332         reg1 = SENSORS_LIMIT(DIV_ROUND_CLOSEST(base_clock, val), 1, 128);
 333         best1 = base_clock / reg1;
 334         reg1 = 0x80 | (reg1 - 1);
 335
 336         /* Choose the closest one */
 337         if (abs(val - best0) > abs(val - best1))
 338                 return reg1;
 339         else
 340                 return reg0;
 341 }
 342
 343 enum chip_types {w83795g, w83795adg};
 344
 345 struct w83795_data {
 346         struct device *hwmon_dev;
 347         struct mutex update_lock;
 348         unsigned long last_updated;     /* In jiffies */
 349         enum chip_types chip_type;
 350
 351         u8 bank;
 352
 353         u32 has_in;             /* Enable monitor VIN or not */
 354         u8 has_dyn_in;          /* Only in2-0 can have this */
 355         u16 in[21][3];          /* Register value, read/high/low */
 356         u8 in_lsb[10][3];       /* LSB Register value, high/low */
 357         u8 has_gain;            /* has gain: in17-20 * 8 */
 358
 359         u16 has_fan;            /* Enable fan14-1 or not */
 360         u16 fan[14];            /* Register value combine */
 361         u16 fan_min[14];        /* Register value combine */
 362
 363         u8 has_temp;            /* Enable monitor temp6-1 or not */
 364         s8 temp[6][5];          /* current, crit, crit_hyst, warn, warn_hyst */
 365         u8 temp_read_vrlsb[6];
 366         u8 temp_mode;           /* bit 0: TR mode, bit 1: TD mode */
 367         u8 temp_src[3];         /* Register value */
 368
 369         u8 enable_dts;          /* Enable PECI and SB-TSI,
 370                                  * bit 0: =1 enable, =0 disable,
 371                                  * bit 1: =1 AMD SB-TSI, =0 Intel PECI */
 372         u8 has_dts;             /* Enable monitor DTS temp */
 373         s8 dts[8];              /* Register value */
 374         u8 dts_read_vrlsb[8];   /* Register value */
 375         s8 dts_ext[4];          /* Register value */
 376
 377         u8 has_pwm;             /* 795g supports 8 pwm, 795adg only supports 2,
 378                                  * no config register, only affected by chip
 379                                  * type */
 380         u8 pwm[8][5];           /* Register value, output, start, non stop, stop
 381                                  * time, freq */
 382         u16 clkin;              /* CLKIN frequency in kHz */
 383         u8 pwm_fcms[2];         /* Register value */
 384         u8 pwm_tfmr[6];         /* Register value */
 385         u8 pwm_fomc;            /* Register value */
 386
 387         u16 target_speed[8];    /* Register value, target speed for speed
 388                                  * cruise */
 389         u8 tol_speed;           /* tolerance of target speed */
 390         u8 pwm_temp[6][4];      /* TTTI, CTFS, HCT, HOT */
 391         u8 sf4_reg[6][2][7];    /* 6 temp, temp/dcpwm, 7 registers */
 392
 393         u8 setup_pwm[3];        /* Register value */
 394
 395         u8 alarms[6];           /* Register value */
 396         u8 beeps[6];            /* Register value */
 397
 398         char valid;
 399 };
 400
 401 /*
 402  * Hardware access
 403  * We assume that nobdody can change the bank outside the driver.
 404  */
 405
 406 /* Must be called with data->update_lock held, except during initialization */
 407 static int w83795_set_bank(struct i2c_client *client, u8 bank)
 408 {
 409         struct w83795_data *data = i2c_get_clientdata(client);
 410         int err;
 411
 412         /* If the same bank is already set, nothing to do */
 413         if ((data->bank & 0x07) == bank)
 414                 return 0;
 415
 416         /* Change to new bank, preserve all other bits */
 417         bank |= data->bank & ~0x07;
 418         err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank);
 419         if (err < 0) {
 420                 dev_err(&client->dev,
 421                         "Failed to set bank to %d, err %d\n",
 422                         (int)bank, err);
 423                 return err;
 424         }
 425         data->bank = bank;
 426
 427         return 0;
 428 }
 429
 430 /* Must be called with data->update_lock held, except during initialization */
 431 static u8 w83795_read(struct i2c_client *client, u16 reg)
 432 {
 433         int err;
 434
 435         err = w83795_set_bank(client, reg >> 8);
 436         if (err < 0)
 437                 return 0x00;    /* Arbitrary */
 438
 439         err = i2c_smbus_read_byte_data(client, reg & 0xff);
 440         if (err < 0) {
 441                 dev_err(&client->dev,
 442                         "Failed to read from register 0x%03x, err %d\n",
 443                         (int)reg, err);
 444                 return 0x00;    /* Arbitrary */
 445         }
 446         return err;
 447 }
 448
 449 /* Must be called with data->update_lock held, except during initialization */
 450 static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
 451 {
 452         int err;
 453
 454         err = w83795_set_bank(client, reg >> 8);
 455         if (err < 0)
 456                 return err;
 457
 458         err = i2c_smbus_write_byte_data(client, reg & 0xff, value);
 459         if (err < 0)
 460                 dev_err(&client->dev,
 461                         "Failed to write to register 0x%03x, err %d\n",
 462                         (int)reg, err);
 463         return err;
 464 }
 465
 466 static struct w83795_data *w83795_update_device(struct device *dev)
 467 {
 468         struct i2c_client *client = to_i2c_client(dev);
 469         struct w83795_data *data = i2c_get_clientdata(client);
 470         u16 tmp;
 471         int i;
 472
 473         mutex_lock(&data->update_lock);
 474
 475         if (!(time_after(jiffies, data->last_updated + HZ * 2)
 476               || !data->valid))
 477                 goto END;
 478
 479         /* Update the voltages value */
 480         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
 481                 if (!(data->has_in & (1 << i)))
 482                         continue;
 483                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
 484                 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
 485                 data->in[i][IN_READ] = tmp;
 486         }
 487
 488         /* in0-2 can have dynamic limits (W83795G only) */
 489         if (data->has_dyn_in) {
 490                 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX));
 491                 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW));
 492
 493                 for (i = 0; i < 3; i++) {
 494                         if (!(data->has_dyn_in & (1 << i)))
 495                                 continue;
 496                         data->in[i][IN_MAX] =
 497                                 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
 498                         data->in[i][IN_LOW] =
 499                                 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
 500                         data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03;
 501                         data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03;
 502                 }
 503         }
 504
 505         /* Update fan */
 506         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
 507                 if (!(data->has_fan & (1 << i)))
 508                         continue;
 509                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
 510                 data->fan[i] |=
 511                   (w83795_read(client, W83795_REG_VRLSB) >> 4) & 0x0F;
 512         }
 513
 514         /* Update temperature */
 515         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
 516                 /* even stop monitor, register still keep value, just read out
 517                  * it */
 518                 if (!(data->has_temp & (1 << i))) {
 519                         data->temp[i][TEMP_READ] = 0;
 520                         data->temp_read_vrlsb[i] = 0;
 521                         continue;
 522                 }
 523                 data->temp[i][TEMP_READ] =
 524                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
 525                 data->temp_read_vrlsb[i] =
 526                         w83795_read(client, W83795_REG_VRLSB);
 527         }
 528
 529         /* Update dts temperature */
 530         if (data->enable_dts != 0) {
 531                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
 532                         if (!(data->has_dts & (1 << i)))
 533                                 continue;
 534                         data->dts[i] =
 535                                 w83795_read(client, W83795_REG_DTS(i));
 536                         data->dts_read_vrlsb[i] =
 537                                 w83795_read(client, W83795_REG_VRLSB);
 538                 }
 539         }
 540
 541         /* Update pwm output */
 542         for (i = 0; i < data->has_pwm; i++) {
 543                 data->pwm[i][PWM_OUTPUT] =
 544                     w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
 545         }
 546
 547         /* update alarm */
 548         for (i = 0; i < ALARM_BEEP_REG_NUM; i++)
 549                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
 550
 551         data->last_updated = jiffies;
 552         data->valid = 1;
 553
 554 END:
 555         mutex_unlock(&data->update_lock);
 556         return data;
 557 }
 558
 559 /*
 560  * Sysfs attributes
 561  */
 562
 563 #define ALARM_STATUS      0
 564 #define BEEP_ENABLE       1
 565 static ssize_t
 566 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
 567 {
 568         struct w83795_data *data = w83795_update_device(dev);
 569         struct sensor_device_attribute_2 *sensor_attr =
 570             to_sensor_dev_attr_2(attr);
 571         int nr = sensor_attr->nr;
 572         int index = sensor_attr->index >> 3;
 573         int bit = sensor_attr->index & 0x07;
 574         u8 val;
 575
 576         if (ALARM_STATUS == nr) {
 577                 val = (data->alarms[index] >> (bit)) & 1;
 578         } else {                /* BEEP_ENABLE */
 579                 val = (data->beeps[index] >> (bit)) & 1;
 580         }
 581
 582         return sprintf(buf, "%u\n", val);
 583 }
 584
 585 static ssize_t
 586 store_beep(struct device *dev, struct device_attribute *attr,
 587            const char *buf, size_t count)
 588 {
 589         struct i2c_client *client = to_i2c_client(dev);
 590         struct w83795_data *data = i2c_get_clientdata(client);
 591         struct sensor_device_attribute_2 *sensor_attr =
 592             to_sensor_dev_attr_2(attr);
 593         int index = sensor_attr->index >> 3;
 594         int shift = sensor_attr->index & 0x07;
 595         u8 beep_bit = 1 << shift;
 596         unsigned long val;
 597
 598         if (strict_strtoul(buf, 10, &val) < 0)
 599                 return -EINVAL;
 600         if (val != 0 && val != 1)
 601                 return -EINVAL;
 602
 603         mutex_lock(&data->update_lock);
 604         data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
 605         data->beeps[index] &= ~beep_bit;
 606         data->beeps[index] |= val << shift;
 607         w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
 608         mutex_unlock(&data->update_lock);
 609
 610         return count;
 611 }
 612
 613 /* Write any value to clear chassis alarm */
 614 static ssize_t
 615 store_chassis_clear(struct device *dev,
 616                     struct device_attribute *attr, const char *buf,
 617                     size_t count)
 618 {
 619         struct i2c_client *client = to_i2c_client(dev);
 620         struct w83795_data *data = i2c_get_clientdata(client);
 621         u8 val;
 622
 623         mutex_lock(&data->update_lock);
 624         val = w83795_read(client, W83795_REG_CLR_CHASSIS);
 625         val |= 0x80;
 626         w83795_write(client, W83795_REG_CLR_CHASSIS, val);
 627         mutex_unlock(&data->update_lock);
 628         return count;
 629 }
 630
 631 #define FAN_INPUT     0
 632 #define FAN_MIN       1
 633 static ssize_t
 634 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
 635 {
 636         struct sensor_device_attribute_2 *sensor_attr =
 637             to_sensor_dev_attr_2(attr);
 638         int nr = sensor_attr->nr;
 639         int index = sensor_attr->index;
 640         struct w83795_data *data = w83795_update_device(dev);
 641         u16 val;
 642
 643         if (FAN_INPUT == nr)
 644                 val = data->fan[index] & 0x0fff;
 645         else
 646                 val = data->fan_min[index] & 0x0fff;
 647
 648         return sprintf(buf, "%lu\n", fan_from_reg(val));
 649 }
 650
 651 static ssize_t
 652 store_fan_min(struct device *dev, struct device_attribute *attr,
 653               const char *buf, size_t count)
 654 {
 655         struct sensor_device_attribute_2 *sensor_attr =
 656             to_sensor_dev_attr_2(attr);
 657         int index = sensor_attr->index;
 658         struct i2c_client *client = to_i2c_client(dev);
 659         struct w83795_data *data = i2c_get_clientdata(client);
 660         unsigned long val;
 661
 662         if (strict_strtoul(buf, 10, &val))
 663                 return -EINVAL;
 664         val = fan_to_reg(val);
 665
 666         mutex_lock(&data->update_lock);
 667         data->fan_min[index] = val;
 668         w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
 669         val &= 0x0f;
 670         if (index & 1) {
 671                 val <<= 4;
 672                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 673                        & 0x0f;
 674         } else {
 675                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 676                        & 0xf0;
 677         }
 678         w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
 679         mutex_unlock(&data->update_lock);
 680
 681         return count;
 682 }
 683
 684 static ssize_t
 685 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 686 {
 687         struct w83795_data *data = w83795_update_device(dev);
 688         struct sensor_device_attribute_2 *sensor_attr =
 689             to_sensor_dev_attr_2(attr);
 690         int nr = sensor_attr->nr;
 691         int index = sensor_attr->index;
 692         unsigned int val;
 693
 694         switch (nr) {
 695         case PWM_STOP_TIME:
 696                 val = time_from_reg(data->pwm[index][nr]);
 697                 break;
 698         case PWM_FREQ:
 699                 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin);
 700                 break;
 701         default:
 702                 val = data->pwm[index][nr];
 703                 break;
 704         }
 705
 706         return sprintf(buf, "%u\n", val);
 707 }
 708
 709 static ssize_t
 710 store_pwm(struct device *dev, struct device_attribute *attr,
 711           const char *buf, size_t count)
 712 {
 713         struct i2c_client *client = to_i2c_client(dev);
 714         struct w83795_data *data = i2c_get_clientdata(client);
 715         struct sensor_device_attribute_2 *sensor_attr =
 716             to_sensor_dev_attr_2(attr);
 717         int nr = sensor_attr->nr;
 718         int index = sensor_attr->index;
 719         unsigned long val;
 720
 721         if (strict_strtoul(buf, 10, &val) < 0)
 722                 return -EINVAL;
 723
 724         mutex_lock(&data->update_lock);
 725         switch (nr) {
 726         case PWM_STOP_TIME:
 727                 val = time_to_reg(val);
 728                 break;
 729         case PWM_FREQ:
 730                 val = pwm_freq_to_reg(val, data->clkin);
 731                 break;
 732         default:
 733                 val = SENSORS_LIMIT(val, 0, 0xff);
 734                 break;
 735         }
 736         w83795_write(client, W83795_REG_PWM(index, nr), val);
 737         data->pwm[index][nr] = val;
 738         mutex_unlock(&data->update_lock);
 739         return count;
 740 }
 741
 742 static ssize_t
 743 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
 744 {
 745         struct sensor_device_attribute_2 *sensor_attr =
 746             to_sensor_dev_attr_2(attr);
 747         struct i2c_client *client = to_i2c_client(dev);
 748         struct w83795_data *data = i2c_get_clientdata(client);
 749         int index = sensor_attr->index;
 750         u8 tmp;
 751
 752         if (1 == (data->pwm_fcms[0] & (1 << index))) {
 753                 tmp = 2;
 754                 goto out;
 755         }
 756         for (tmp = 0; tmp < 6; tmp++) {
 757                 if (data->pwm_tfmr[tmp] & (1 << index)) {
 758                         tmp = 3;
 759                         goto out;
 760                 }
 761         }
 762         if (data->pwm_fomc & (1 << index))
 763                 tmp = 0;
 764         else
 765                 tmp = 1;
 766
 767 out:
 768         return sprintf(buf, "%u\n", tmp);
 769 }
 770
 771 static ssize_t
 772 store_pwm_enable(struct device *dev, struct device_attribute *attr,
 773           const char *buf, size_t count)
 774 {
 775         struct i2c_client *client = to_i2c_client(dev);
 776         struct w83795_data *data = i2c_get_clientdata(client);
 777         struct sensor_device_attribute_2 *sensor_attr =
 778             to_sensor_dev_attr_2(attr);
 779         int index = sensor_attr->index;
 780         unsigned long val;
 781         int i;
 782
 783         if (strict_strtoul(buf, 10, &val) < 0)
 784                 return -EINVAL;
 785         if (val > 2)
 786                 return -EINVAL;
 787
 788         mutex_lock(&data->update_lock);
 789         switch (val) {
 790         case 0:
 791         case 1:
 792                 data->pwm_fcms[0] &= ~(1 << index);
 793                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 794                 for (i = 0; i < 6; i++) {
 795                         data->pwm_tfmr[i] &= ~(1 << index);
 796                         w83795_write(client, W83795_REG_TFMR(i),
 797                                 data->pwm_tfmr[i]);
 798                 }
 799                 data->pwm_fomc |= 1 << index;
 800                 data->pwm_fomc ^= val << index;
 801                 w83795_write(client, W83795_REG_FOMC, data->pwm_fomc);
 802                 break;
 803         case 2:
 804                 data->pwm_fcms[0] |= (1 << index);
 805                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 806                 break;
 807         }
 808         mutex_unlock(&data->update_lock);
 809         return count;
 810 }
 811
 812 static ssize_t
 813 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
 814 {
 815         struct sensor_device_attribute_2 *sensor_attr =
 816             to_sensor_dev_attr_2(attr);
 817         struct i2c_client *client = to_i2c_client(dev);
 818         struct w83795_data *data = i2c_get_clientdata(client);
 819         int index = sensor_attr->index;
 820         u8 val = index / 2;
 821         u8 tmp = data->temp_src[val];
 822
 823         if (index & 1)
 824                 val = 4;
 825         else
 826                 val = 0;
 827         tmp >>= val;
 828         tmp &= 0x0f;
 829
 830         return sprintf(buf, "%u\n", tmp);
 831 }
 832
 833 static ssize_t
 834 store_temp_src(struct device *dev, struct device_attribute *attr,
 835           const char *buf, size_t count)
 836 {
 837         struct i2c_client *client = to_i2c_client(dev);
 838         struct w83795_data *data = i2c_get_clientdata(client);
 839         struct sensor_device_attribute_2 *sensor_attr =
 840             to_sensor_dev_attr_2(attr);
 841         int index = sensor_attr->index;
 842         unsigned long tmp;
 843         u8 val = index / 2;
 844
 845         if (strict_strtoul(buf, 10, &tmp) < 0)
 846                 return -EINVAL;
 847         tmp = SENSORS_LIMIT(tmp, 0, 15);
 848
 849         mutex_lock(&data->update_lock);
 850         if (index & 1) {
 851                 tmp <<= 4;
 852                 data->temp_src[val] &= 0x0f;
 853         } else {
 854                 data->temp_src[val] &= 0xf0;
 855         }
 856         data->temp_src[val] |= tmp;
 857         w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
 858         mutex_unlock(&data->update_lock);
 859
 860         return count;
 861 }
 862
 863 #define TEMP_PWM_ENABLE   0
 864 #define TEMP_PWM_FAN_MAP  1
 865 static ssize_t
 866 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 867                      char *buf)
 868 {
 869         struct i2c_client *client = to_i2c_client(dev);
 870         struct w83795_data *data = i2c_get_clientdata(client);
 871         struct sensor_device_attribute_2 *sensor_attr =
 872             to_sensor_dev_attr_2(attr);
 873         int nr = sensor_attr->nr;
 874         int index = sensor_attr->index;
 875         u8 tmp = 0xff;
 876
 877         switch (nr) {
 878         case TEMP_PWM_ENABLE:
 879                 tmp = (data->pwm_fcms[1] >> index) & 1;
 880                 if (tmp)
 881                         tmp = 4;
 882                 else
 883                         tmp = 3;
 884                 break;
 885         case TEMP_PWM_FAN_MAP:
 886                 tmp = data->pwm_tfmr[index];
 887                 break;
 888         }
 889
 890         return sprintf(buf, "%u\n", tmp);
 891 }
 892
 893 static ssize_t
 894 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 895           const char *buf, size_t count)
 896 {
 897         struct i2c_client *client = to_i2c_client(dev);
 898         struct w83795_data *data = i2c_get_clientdata(client);
 899         struct sensor_device_attribute_2 *sensor_attr =
 900             to_sensor_dev_attr_2(attr);
 901         int nr = sensor_attr->nr;
 902         int index = sensor_attr->index;
 903         unsigned long tmp;
 904
 905         if (strict_strtoul(buf, 10, &tmp) < 0)
 906                 return -EINVAL;
 907
 908         switch (nr) {
 909         case TEMP_PWM_ENABLE:
 910                 if ((tmp != 3) && (tmp != 4))
 911                         return -EINVAL;
 912                 tmp -= 3;
 913                 mutex_lock(&data->update_lock);
 914                 data->pwm_fcms[1] &= ~(1 << index);
 915                 data->pwm_fcms[1] |= tmp << index;
 916                 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
 917                 mutex_unlock(&data->update_lock);
 918                 break;
 919         case TEMP_PWM_FAN_MAP:
 920                 mutex_lock(&data->update_lock);
 921                 tmp = SENSORS_LIMIT(tmp, 0, 0xff);
 922                 w83795_write(client, W83795_REG_TFMR(index), tmp);
 923                 data->pwm_tfmr[index] = tmp;
 924                 mutex_unlock(&data->update_lock);
 925                 break;
 926         }
 927         return count;
 928 }
 929
 930 #define FANIN_TARGET   0
 931 #define FANIN_TOL      1
 932 static ssize_t
 933 show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
 934 {
 935         struct i2c_client *client = to_i2c_client(dev);
 936         struct w83795_data *data = i2c_get_clientdata(client);
 937         struct sensor_device_attribute_2 *sensor_attr =
 938             to_sensor_dev_attr_2(attr);
 939         int nr = sensor_attr->nr;
 940         int index = sensor_attr->index;
 941         u16 tmp = 0;
 942
 943         switch (nr) {
 944         case FANIN_TARGET:
 945                 tmp = fan_from_reg(data->target_speed[index]);
 946                 break;
 947         case FANIN_TOL:
 948                 tmp = data->tol_speed;
 949                 break;
 950         }
 951
 952         return sprintf(buf, "%u\n", tmp);
 953 }
 954
 955 static ssize_t
 956 store_fanin(struct device *dev, struct device_attribute *attr,
 957           const char *buf, size_t count)
 958 {
 959         struct i2c_client *client = to_i2c_client(dev);
 960         struct w83795_data *data = i2c_get_clientdata(client);
 961         struct sensor_device_attribute_2 *sensor_attr =
 962             to_sensor_dev_attr_2(attr);
 963         int nr = sensor_attr->nr;
 964         int index = sensor_attr->index;
 965         unsigned long val;
 966
 967         if (strict_strtoul(buf, 10, &val) < 0)
 968                 return -EINVAL;
 969
 970         mutex_lock(&data->update_lock);
 971         switch (nr) {
 972         case FANIN_TARGET:
 973                 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff));
 974                 w83795_write(client, W83795_REG_FTSH(index), (val >> 4) & 0xff);
 975                 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
 976                 data->target_speed[index] = val;
 977                 break;
 978         case FANIN_TOL:
 979                 val = SENSORS_LIMIT(val, 0, 0x3f);
 980                 w83795_write(client, W83795_REG_TFTS, val);
 981                 data->tol_speed = val;
 982                 break;
 983         }
 984         mutex_unlock(&data->update_lock);
 985
 986         return count;
 987 }
 988
 989
 990 static ssize_t
 991 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 992 {
 993         struct i2c_client *client = to_i2c_client(dev);
 994         struct w83795_data *data = i2c_get_clientdata(client);
 995         struct sensor_device_attribute_2 *sensor_attr =
 996             to_sensor_dev_attr_2(attr);
 997         int nr = sensor_attr->nr;
 998         int index = sensor_attr->index;
 999         long tmp = temp_from_reg(data->pwm_temp[index][nr]);
1000
1001         return sprintf(buf, "%ld\n", tmp);
1002 }
1003
1004 static ssize_t
1005 store_temp_pwm(struct device *dev, struct device_attribute *attr,
1006           const char *buf, size_t count)
1007 {
1008         struct i2c_client *client = to_i2c_client(dev);
1009         struct w83795_data *data = i2c_get_clientdata(client);
1010         struct sensor_device_attribute_2 *sensor_attr =
1011             to_sensor_dev_attr_2(attr);
1012         int nr = sensor_attr->nr;
1013         int index = sensor_attr->index;
1014         unsigned long val;
1015         u8 tmp;
1016
1017         if (strict_strtoul(buf, 10, &val) < 0)
1018                 return -EINVAL;
1019         val /= 1000;
1020
1021         mutex_lock(&data->update_lock);
1022         switch (nr) {
1023         case TEMP_PWM_TTTI:
1024                 val = SENSORS_LIMIT(val, 0, 0x7f);
1025                 w83795_write(client, W83795_REG_TTTI(index), val);
1026                 break;
1027         case TEMP_PWM_CTFS:
1028                 val = SENSORS_LIMIT(val, 0, 0x7f);
1029                 w83795_write(client, W83795_REG_CTFS(index), val);
1030                 break;
1031         case TEMP_PWM_HCT:
1032                 val = SENSORS_LIMIT(val, 0, 0x0f);
1033                 tmp = w83795_read(client, W83795_REG_HT(index));
1034                 tmp &= 0x0f;
1035                 tmp |= (val << 4) & 0xf0;
1036                 w83795_write(client, W83795_REG_HT(index), tmp);
1037                 break;
1038         case TEMP_PWM_HOT:
1039                 val = SENSORS_LIMIT(val, 0, 0x0f);
1040                 tmp = w83795_read(client, W83795_REG_HT(index));
1041                 tmp &= 0xf0;
1042                 tmp |= val & 0x0f;
1043                 w83795_write(client, W83795_REG_HT(index), tmp);
1044                 break;
1045         }
1046         data->pwm_temp[index][nr] = val;
1047         mutex_unlock(&data->update_lock);
1048
1049         return count;
1050 }
1051
1052 static ssize_t
1053 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1054 {
1055         struct i2c_client *client = to_i2c_client(dev);
1056         struct w83795_data *data = i2c_get_clientdata(client);
1057         struct sensor_device_attribute_2 *sensor_attr =
1058             to_sensor_dev_attr_2(attr);
1059         int nr = sensor_attr->nr;
1060         int index = sensor_attr->index;
1061
1062         return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1063 }
1064
1065 static ssize_t
1066 store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1067           const char *buf, size_t count)
1068 {
1069         struct i2c_client *client = to_i2c_client(dev);
1070         struct w83795_data *data = i2c_get_clientdata(client);
1071         struct sensor_device_attribute_2 *sensor_attr =
1072             to_sensor_dev_attr_2(attr);
1073         int nr = sensor_attr->nr;
1074         int index = sensor_attr->index;
1075         unsigned long val;
1076
1077         if (strict_strtoul(buf, 10, &val) < 0)
1078                 return -EINVAL;
1079
1080         mutex_lock(&data->update_lock);
1081         w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1082         data->sf4_reg[index][SF4_PWM][nr] = val;
1083         mutex_unlock(&data->update_lock);
1084
1085         return count;
1086 }
1087
1088 static ssize_t
1089 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1090 {
1091         struct i2c_client *client = to_i2c_client(dev);
1092         struct w83795_data *data = i2c_get_clientdata(client);
1093         struct sensor_device_attribute_2 *sensor_attr =
1094             to_sensor_dev_attr_2(attr);
1095         int nr = sensor_attr->nr;
1096         int index = sensor_attr->index;
1097
1098         return sprintf(buf, "%u\n",
1099                 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1100 }
1101
1102 static ssize_t
1103 store_sf4_temp(struct device *dev, struct device_attribute *attr,
1104           const char *buf, size_t count)
1105 {
1106         struct i2c_client *client = to_i2c_client(dev);
1107         struct w83795_data *data = i2c_get_clientdata(client);
1108         struct sensor_device_attribute_2 *sensor_attr =
1109             to_sensor_dev_attr_2(attr);
1110         int nr = sensor_attr->nr;
1111         int index = sensor_attr->index;
1112         unsigned long val;
1113
1114         if (strict_strtoul(buf, 10, &val) < 0)
1115                 return -EINVAL;
1116         val /= 1000;
1117
1118         mutex_lock(&data->update_lock);
1119         w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1120         data->sf4_reg[index][SF4_TEMP][nr] = val;
1121         mutex_unlock(&data->update_lock);
1122
1123         return count;
1124 }
1125
1126
1127 static ssize_t
1128 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1129 {
1130         struct sensor_device_attribute_2 *sensor_attr =
1131             to_sensor_dev_attr_2(attr);
1132         int nr = sensor_attr->nr;
1133         int index = sensor_attr->index;
1134         struct w83795_data *data = w83795_update_device(dev);
1135         long temp = temp_from_reg(data->temp[index][nr]);
1136
1137         if (TEMP_READ == nr)
1138                 temp += (data->temp_read_vrlsb[index] >> 6) * 250;
1139         return sprintf(buf, "%ld\n", temp);
1140 }
1141
1142 static ssize_t
1143 store_temp(struct device *dev, struct device_attribute *attr,
1144            const char *buf, size_t count)
1145 {
1146         struct sensor_device_attribute_2 *sensor_attr =
1147             to_sensor_dev_attr_2(attr);
1148         int nr = sensor_attr->nr;
1149         int index = sensor_attr->index;
1150         struct i2c_client *client = to_i2c_client(dev);
1151         struct w83795_data *data = i2c_get_clientdata(client);
1152         long tmp;
1153
1154         if (strict_strtol(buf, 10, &tmp) < 0)
1155                 return -EINVAL;
1156
1157         mutex_lock(&data->update_lock);
1158         data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1159         w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1160         mutex_unlock(&data->update_lock);
1161         return count;
1162 }
1163
1164
1165 static ssize_t
1166 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1167 {
1168         struct i2c_client *client = to_i2c_client(dev);
1169         struct w83795_data *data = i2c_get_clientdata(client);
1170         struct sensor_device_attribute_2 *sensor_attr =
1171             to_sensor_dev_attr_2(attr);
1172         int index = sensor_attr->index;
1173         u8 tmp;
1174
1175         if (data->enable_dts == 0)
1176                 return sprintf(buf, "%d\n", 0);
1177
1178         if ((data->has_dts >> index) & 0x01) {
1179                 if (data->enable_dts & 2)
1180                         tmp = 5;
1181                 else
1182                         tmp = 6;
1183         } else {
1184                 tmp = 0;
1185         }
1186
1187         return sprintf(buf, "%d\n", tmp);
1188 }
1189
1190 static ssize_t
1191 show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1192 {
1193         struct sensor_device_attribute_2 *sensor_attr =
1194             to_sensor_dev_attr_2(attr);
1195         int index = sensor_attr->index;
1196         struct w83795_data *data = w83795_update_device(dev);
1197         long temp = temp_from_reg(data->dts[index]);
1198
1199         temp += (data->dts_read_vrlsb[index] >> 6) * 250;
1200         return sprintf(buf, "%ld\n", temp);
1201 }
1202
1203 static ssize_t
1204 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1205 {
1206         struct sensor_device_attribute_2 *sensor_attr =
1207             to_sensor_dev_attr_2(attr);
1208         int nr = sensor_attr->nr;
1209         struct i2c_client *client = to_i2c_client(dev);
1210         struct w83795_data *data = i2c_get_clientdata(client);
1211         long temp = temp_from_reg(data->dts_ext[nr]);
1212
1213         return sprintf(buf, "%ld\n", temp);
1214 }
1215
1216 static ssize_t
1217 store_dts_ext(struct device *dev, struct device_attribute *attr,
1218            const char *buf, size_t count)
1219 {
1220         struct sensor_device_attribute_2 *sensor_attr =
1221             to_sensor_dev_attr_2(attr);
1222         int nr = sensor_attr->nr;
1223         struct i2c_client *client = to_i2c_client(dev);
1224         struct w83795_data *data = i2c_get_clientdata(client);
1225         long tmp;
1226
1227         if (strict_strtol(buf, 10, &tmp) < 0)
1228                 return -EINVAL;
1229
1230         mutex_lock(&data->update_lock);
1231         data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1232         w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1233         mutex_unlock(&data->update_lock);
1234         return count;
1235 }
1236
1237
1238 /*
1239         Type 3:  Thermal diode
1240         Type 4:  Thermistor
1241
1242         Temp5-6, default TR
1243         Temp1-4, default TD
1244 */
1245
1246 static ssize_t
1247 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1248 {
1249         struct i2c_client *client = to_i2c_client(dev);
1250         struct w83795_data *data = i2c_get_clientdata(client);
1251         struct sensor_device_attribute_2 *sensor_attr =
1252             to_sensor_dev_attr_2(attr);
1253         int index = sensor_attr->index;
1254         u8 tmp;
1255
1256         if (data->has_temp >> index & 0x01) {
1257                 if (data->temp_mode >> index & 0x01)
1258                         tmp = 3;
1259                 else
1260                         tmp = 4;
1261         } else {
1262                 tmp = 0;
1263         }
1264
1265         return sprintf(buf, "%d\n", tmp);
1266 }
1267
1268 static ssize_t
1269 store_temp_mode(struct device *dev, struct device_attribute *attr,
1270                 const char *buf, size_t count)
1271 {
1272         struct i2c_client *client = to_i2c_client(dev);
1273         struct w83795_data *data = i2c_get_clientdata(client);
1274         struct sensor_device_attribute_2 *sensor_attr =
1275             to_sensor_dev_attr_2(attr);
1276         int index = sensor_attr->index;
1277         unsigned long val;
1278         u8 tmp;
1279         u32 mask;
1280
1281         if (strict_strtoul(buf, 10, &val) < 0)
1282                 return -EINVAL;
1283         if ((val != 4) && (val != 3))
1284                 return -EINVAL;
1285         if ((index > 3) && (val == 3))
1286                 return -EINVAL;
1287
1288         mutex_lock(&data->update_lock);
1289         if (val == 3) {
1290                 val = TEMP_CTRL_TD;
1291                 data->has_temp |= 1 << index;
1292                 data->temp_mode |= 1 << index;
1293         } else if (val == 4) {
1294                 val = TEMP_CTRL_TR;
1295                 data->has_temp |= 1 << index;
1296                 tmp = 1 << index;
1297                 data->temp_mode &= ~tmp;
1298         }
1299
1300         if (index > 3)
1301                 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
1302         else
1303                 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1304
1305         mask = 0x03 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_SHIFT];
1306         tmp &= ~mask;
1307         tmp |= W83795_REG_TEMP_CTRL[index][val];
1308
1309         mask = 1 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_HASIN_SHIFT];
1310         data->has_in &= ~mask;
1311
1312         if (index > 3)
1313                 w83795_write(client, W83795_REG_TEMP_CTRL1, tmp);
1314         else
1315                 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1316
1317         mutex_unlock(&data->update_lock);
1318         return count;
1319 }
1320
1321
1322 /* show/store VIN */
1323 static ssize_t
1324 show_in(struct device *dev, struct device_attribute *attr, char *buf)
1325 {
1326         struct sensor_device_attribute_2 *sensor_attr =
1327             to_sensor_dev_attr_2(attr);
1328         int nr = sensor_attr->nr;
1329         int index = sensor_attr->index;
1330         struct w83795_data *data = w83795_update_device(dev);
1331         u16 val = data->in[index][nr];
1332         u8 lsb_idx;
1333
1334         switch (nr) {
1335         case IN_READ:
1336                 /* calculate this value again by sensors as sensors3.conf */
1337                 if ((index >= 17) &&
1338                     !((data->has_gain >> (index - 17)) & 1))
1339                         val *= 8;
1340                 break;
1341         case IN_MAX:
1342         case IN_LOW:
1343                 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1344                 val <<= 2;
1345                 val |= (data->in_lsb[lsb_idx][nr] >>
1346                         IN_LSB_SHIFT_IDX[lsb_idx][IN_LSB_SHIFT]) & 0x03;
1347                 if ((index >= 17) &&
1348                     !((data->has_gain >> (index - 17)) & 1))
1349                         val *= 8;
1350                 break;
1351         }
1352         val = in_from_reg(index, val);
1353
1354         return sprintf(buf, "%d\n", val);
1355 }
1356
1357 static ssize_t
1358 store_in(struct device *dev, struct device_attribute *attr,
1359          const char *buf, size_t count)
1360 {
1361         struct sensor_device_attribute_2 *sensor_attr =
1362             to_sensor_dev_attr_2(attr);
1363         int nr = sensor_attr->nr;
1364         int index = sensor_attr->index;
1365         struct i2c_client *client = to_i2c_client(dev);
1366         struct w83795_data *data = i2c_get_clientdata(client);
1367         unsigned long val;
1368         u8 tmp;
1369         u8 lsb_idx;
1370
1371         if (strict_strtoul(buf, 10, &val) < 0)
1372                 return -EINVAL;
1373         val = in_to_reg(index, val);
1374
1375         if ((index >= 17) &&
1376             !((data->has_gain >> (index - 17)) & 1))
1377                 val /= 8;
1378         val = SENSORS_LIMIT(val, 0, 0x3FF);
1379         mutex_lock(&data->update_lock);
1380
1381         lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1382         tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1383         tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1384         tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1385         w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1386         data->in_lsb[lsb_idx][nr] = tmp;
1387
1388         tmp = (val >> 2) & 0xff;
1389         w83795_write(client, W83795_REG_IN[index][nr], tmp);
1390         data->in[index][nr] = tmp;
1391
1392         mutex_unlock(&data->update_lock);
1393         return count;
1394 }
1395
1396
1397 static ssize_t
1398 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1399 {
1400         struct sensor_device_attribute_2 *sensor_attr =
1401             to_sensor_dev_attr_2(attr);
1402         int nr = sensor_attr->nr;
1403         struct i2c_client *client = to_i2c_client(dev);
1404         struct w83795_data *data = i2c_get_clientdata(client);
1405         u16 val = data->setup_pwm[nr];
1406
1407         switch (nr) {
1408         case SETUP_PWM_UPTIME:
1409         case SETUP_PWM_DOWNTIME:
1410                 val = time_from_reg(val);
1411                 break;
1412         }
1413
1414         return sprintf(buf, "%d\n", val);
1415 }
1416
1417 static ssize_t
1418 store_sf_setup(struct device *dev, struct device_attribute *attr,
1419          const char *buf, size_t count)
1420 {
1421         struct sensor_device_attribute_2 *sensor_attr =
1422             to_sensor_dev_attr_2(attr);
1423         int nr = sensor_attr->nr;
1424         struct i2c_client *client = to_i2c_client(dev);
1425         struct w83795_data *data = i2c_get_clientdata(client);
1426         unsigned long val;
1427
1428         if (strict_strtoul(buf, 10, &val) < 0)
1429                 return -EINVAL;
1430
1431         switch (nr) {
1432         case SETUP_PWM_DEFAULT:
1433                 val = SENSORS_LIMIT(val, 0, 0xff);
1434                 break;
1435         case SETUP_PWM_UPTIME:
1436         case SETUP_PWM_DOWNTIME:
1437                 val = time_to_reg(val);
1438                 if (val == 0)
1439                         return -EINVAL;
1440                 break;
1441         }
1442
1443         mutex_lock(&data->update_lock);
1444         data->setup_pwm[nr] = val;
1445         w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1446         mutex_unlock(&data->update_lock);
1447         return count;
1448 }
1449
1450
1451 #define NOT_USED                        -1
1452
1453 /* Don't change the attribute order, _max and _min are accessed by index
1454  * somewhere else in the code */
1455 #define SENSOR_ATTR_IN(index) {                                         \
1456         SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL,        \
1457                 IN_READ, index), \
1458         SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in,      \
1459                 store_in, IN_MAX, index),                               \
1460         SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in,      \
1461                 store_in, IN_LOW, index),                               \
1462         SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep,      \
1463                 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1464         SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO,              \
1465                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1466                 index + ((index > 14) ? 1 : 0)) }
1467
1468 #define SENSOR_ATTR_FAN(index) {                                        \
1469         SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan,            \
1470                 NULL, FAN_INPUT, index - 1), \
1471         SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO,              \
1472                 show_fan, store_fan_min, FAN_MIN, index - 1),   \
1473         SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep,     \
1474                 NULL, ALARM_STATUS, index + 31),                        \
1475         SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO,             \
1476                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) }
1477
1478 #define SENSOR_ATTR_PWM(index) {                                        \
1479         SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm,          \
1480                 store_pwm, PWM_OUTPUT, index - 1),                      \
1481         SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO,          \
1482                 show_pwm, store_pwm, PWM_NONSTOP, index - 1),           \
1483         SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO,            \
1484                 show_pwm, store_pwm, PWM_START, index - 1),             \
1485         SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO,        \
1486                 show_pwm, store_pwm, PWM_STOP_TIME, index - 1),  \
1487         SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO,     \
1488                 show_pwm, store_pwm, PWM_FREQ, index - 1),       \
1489         SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO,           \
1490                 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
1491         SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
1492                 show_fanin, store_fanin, FANIN_TARGET, index - 1) }
1493
1494 #define SENSOR_ATTR_DTS(index) {                                        \
1495         SENSOR_ATTR_2(temp##index##_type, S_IRUGO ,             \
1496                 show_dts_mode, NULL, NOT_USED, index - 7),      \
1497         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts,           \
1498                 NULL, NOT_USED, index - 7),                             \
1499         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \
1500                 store_dts_ext, DTS_CRIT, NOT_USED),                     \
1501         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1502                 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED),  \
1503         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1504                 store_dts_ext, DTS_WARN, NOT_USED),                     \
1505         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1506                 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED),  \
1507         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1508                 show_alarm_beep, NULL, ALARM_STATUS, index + 17),       \
1509         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1510                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
1511
1512 #define SENSOR_ATTR_TEMP(index) {                                       \
1513         SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR,            \
1514                 show_temp_mode, store_temp_mode, NOT_USED, index - 1),  \
1515         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp,          \
1516                 NULL, TEMP_READ, index - 1),                            \
1517         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \
1518                 store_temp, TEMP_CRIT, index - 1),                      \
1519         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1520                 show_temp, store_temp, TEMP_CRIT_HYST, index - 1),      \
1521         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp,  \
1522                 store_temp, TEMP_WARN, index - 1),                      \
1523         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1524                 show_temp, store_temp, TEMP_WARN_HYST, index - 1),      \
1525         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1526                 show_alarm_beep, NULL, ALARM_STATUS,                    \
1527                 index + (index > 4 ? 11 : 17)),                         \
1528         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1529                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1530                 index + (index > 4 ? 11 : 17)),                         \
1531         SENSOR_ATTR_2(temp##index##_source_sel, S_IWUSR | S_IRUGO,      \
1532                 show_temp_src, store_temp_src, NOT_USED, index - 1),    \
1533         SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO,      \
1534                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1535                 TEMP_PWM_ENABLE, index - 1),                            \
1536         SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1537                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1538                 TEMP_PWM_FAN_MAP, index - 1),                           \
1539         SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO,         \
1540                 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1541         SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO,            \
1542                 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1543         SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO,       \
1544                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1545         SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO,  \
1546                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1547         SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1548                 show_sf4_pwm, store_sf4_pwm, 0, index - 1),             \
1549         SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1550                 show_sf4_pwm, store_sf4_pwm, 1, index - 1),             \
1551         SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1552                 show_sf4_pwm, store_sf4_pwm, 2, index - 1),             \
1553         SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1554                 show_sf4_pwm, store_sf4_pwm, 3, index - 1),             \
1555         SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1556                 show_sf4_pwm, store_sf4_pwm, 4, index - 1),             \
1557         SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1558                 show_sf4_pwm, store_sf4_pwm, 5, index - 1),             \
1559         SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1560                 show_sf4_pwm, store_sf4_pwm, 6, index - 1),             \
1561         SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1562                 show_sf4_temp, store_sf4_temp, 0, index - 1),           \
1563         SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1564                 show_sf4_temp, store_sf4_temp, 1, index - 1),           \
1565         SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1566                 show_sf4_temp, store_sf4_temp, 2, index - 1),           \
1567         SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1568                 show_sf4_temp, store_sf4_temp, 3, index - 1),           \
1569         SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1570                 show_sf4_temp, store_sf4_temp, 4, index - 1),           \
1571         SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1572                 show_sf4_temp, store_sf4_temp, 5, index - 1),           \
1573         SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1574                 show_sf4_temp, store_sf4_temp, 6, index - 1) }
1575
1576
1577 static struct sensor_device_attribute_2 w83795_in[][5] = {
1578         SENSOR_ATTR_IN(0),
1579         SENSOR_ATTR_IN(1),
1580         SENSOR_ATTR_IN(2),
1581         SENSOR_ATTR_IN(3),
1582         SENSOR_ATTR_IN(4),
1583         SENSOR_ATTR_IN(5),
1584         SENSOR_ATTR_IN(6),
1585         SENSOR_ATTR_IN(7),
1586         SENSOR_ATTR_IN(8),
1587         SENSOR_ATTR_IN(9),
1588         SENSOR_ATTR_IN(10),
1589         SENSOR_ATTR_IN(11),
1590         SENSOR_ATTR_IN(12),
1591         SENSOR_ATTR_IN(13),
1592         SENSOR_ATTR_IN(14),
1593         SENSOR_ATTR_IN(15),
1594         SENSOR_ATTR_IN(16),
1595         SENSOR_ATTR_IN(17),
1596         SENSOR_ATTR_IN(18),
1597         SENSOR_ATTR_IN(19),
1598         SENSOR_ATTR_IN(20),
1599 };
1600
1601 static const struct sensor_device_attribute_2 w83795_fan[][4] = {
1602         SENSOR_ATTR_FAN(1),
1603         SENSOR_ATTR_FAN(2),
1604         SENSOR_ATTR_FAN(3),
1605         SENSOR_ATTR_FAN(4),
1606         SENSOR_ATTR_FAN(5),
1607         SENSOR_ATTR_FAN(6),
1608         SENSOR_ATTR_FAN(7),
1609         SENSOR_ATTR_FAN(8),
1610         SENSOR_ATTR_FAN(9),
1611         SENSOR_ATTR_FAN(10),
1612         SENSOR_ATTR_FAN(11),
1613         SENSOR_ATTR_FAN(12),
1614         SENSOR_ATTR_FAN(13),
1615         SENSOR_ATTR_FAN(14),
1616 };
1617
1618 static const struct sensor_device_attribute_2 w83795_temp[][29] = {
1619         SENSOR_ATTR_TEMP(1),
1620         SENSOR_ATTR_TEMP(2),
1621         SENSOR_ATTR_TEMP(3),
1622         SENSOR_ATTR_TEMP(4),
1623         SENSOR_ATTR_TEMP(5),
1624         SENSOR_ATTR_TEMP(6),
1625 };
1626
1627 static const struct sensor_device_attribute_2 w83795_dts[][8] = {
1628         SENSOR_ATTR_DTS(7),
1629         SENSOR_ATTR_DTS(8),
1630         SENSOR_ATTR_DTS(9),
1631         SENSOR_ATTR_DTS(10),
1632         SENSOR_ATTR_DTS(11),
1633         SENSOR_ATTR_DTS(12),
1634         SENSOR_ATTR_DTS(13),
1635         SENSOR_ATTR_DTS(14),
1636 };
1637
1638 static const struct sensor_device_attribute_2 w83795_pwm[][7] = {
1639         SENSOR_ATTR_PWM(1),
1640         SENSOR_ATTR_PWM(2),
1641         SENSOR_ATTR_PWM(3),
1642         SENSOR_ATTR_PWM(4),
1643         SENSOR_ATTR_PWM(5),
1644         SENSOR_ATTR_PWM(6),
1645         SENSOR_ATTR_PWM(7),
1646         SENSOR_ATTR_PWM(8),
1647 };
1648
1649 static const struct sensor_device_attribute_2 sda_single_files[] = {
1650         SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep,
1651                       store_chassis_clear, ALARM_STATUS, 46),
1652         SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
1653                       store_beep, BEEP_ENABLE, 47),
1654         SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1655                 store_fanin, FANIN_TOL, NOT_USED),
1656         SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1657                       store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1658         SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1659                       store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1660         SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1661                       store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1662 };
1663
1664 /*
1665  * Driver interface
1666  */
1667
1668 static void w83795_init_client(struct i2c_client *client)
1669 {
1670         struct w83795_data *data = i2c_get_clientdata(client);
1671         static const u16 clkin[4] = {   /* in kHz */
1672                 14318, 24000, 33333, 48000
1673         };
1674         u8 config;
1675
1676         if (reset)
1677                 w83795_write(client, W83795_REG_CONFIG, 0x80);
1678
1679         /* Start monitoring if needed */
1680         config = w83795_read(client, W83795_REG_CONFIG);
1681         if (!(config & W83795_REG_CONFIG_START)) {
1682                 dev_info(&client->dev, "Enabling monitoring operations\n");
1683                 w83795_write(client, W83795_REG_CONFIG,
1684                              config | W83795_REG_CONFIG_START);
1685         }
1686
1687         data->clkin = clkin[(config >> 3) & 0x3];
1688         dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin);
1689 }
1690
1691 static int w83795_get_device_id(struct i2c_client *client)
1692 {
1693         int device_id;
1694
1695         device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID);
1696
1697         /* Special case for rev. A chips; can't be checked first because later
1698            revisions emulate this for compatibility */
1699         if (device_id < 0 || (device_id & 0xf0) != 0x50) {
1700                 int alt_id;
1701
1702                 alt_id = i2c_smbus_read_byte_data(client,
1703                                                   W83795_REG_DEVICEID_A);
1704                 if (alt_id == 0x50)
1705                         device_id = alt_id;
1706         }
1707
1708         return device_id;
1709 }
1710
1711 /* Return 0 if detection is successful, -ENODEV otherwise */
1712 static int w83795_detect(struct i2c_client *client,
1713                          struct i2c_board_info *info)
1714 {
1715         int bank, vendor_id, device_id, expected, i2c_addr, config;
1716         struct i2c_adapter *adapter = client->adapter;
1717         unsigned short address = client->addr;
1718         const char *chip_name;
1719
1720         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1721                 return -ENODEV;
1722         bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1723         if (bank < 0 || (bank & 0x7c)) {
1724                 dev_dbg(&adapter->dev,
1725                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1726                         address, "bank");
1727                 return -ENODEV;
1728         }
1729
1730         /* Check Nuvoton vendor ID */
1731         vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID);
1732         expected = bank & 0x80 ? 0x5c : 0xa3;
1733         if (vendor_id != expected) {
1734                 dev_dbg(&adapter->dev,
1735                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1736                         address, "vendor id");
1737                 return -ENODEV;
1738         }
1739
1740         /* Check device ID */
1741         device_id = w83795_get_device_id(client) |
1742                     (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8);
1743         if ((device_id >> 4) != 0x795) {
1744                 dev_dbg(&adapter->dev,
1745                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1746                         address, "device id\n");
1747                 return -ENODEV;
1748         }
1749
1750         /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1751            should match */
1752         if ((bank & 0x07) == 0) {
1753                 i2c_addr = i2c_smbus_read_byte_data(client,
1754                                                     W83795_REG_I2C_ADDR);
1755                 if ((i2c_addr & 0x7f) != address) {
1756                         dev_dbg(&adapter->dev,
1757                                 "w83795: Detection failed at addr 0x%02hx, "
1758                                 "check %s\n", address, "i2c addr");
1759                         return -ENODEV;
1760                 }
1761         }
1762
1763         /* Check 795 chip type: 795G or 795ADG
1764            Usually we don't write to chips during detection, but here we don't
1765            quite have the choice; hopefully it's OK, we are about to return
1766            success anyway */
1767         if ((bank & 0x07) != 0)
1768                 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
1769                                           bank & ~0x07);
1770         config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG);
1771         if (config & W83795_REG_CONFIG_CONFIG48)
1772                 chip_name = "w83795adg";
1773         else
1774                 chip_name = "w83795g";
1775
1776         strlcpy(info->type, chip_name, I2C_NAME_SIZE);
1777         dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name,
1778                  'A' + (device_id & 0xf), address);
1779
1780         return 0;
1781 }
1782
1783 static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
1784                                const struct device_attribute *))
1785 {
1786         struct w83795_data *data = dev_get_drvdata(dev);
1787         int err, i, j;
1788
1789         for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
1790                 if (!(data->has_in & (1 << i)))
1791                         continue;
1792                 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) {
1793                         err = fn(dev, &w83795_in[i][j].dev_attr);
1794                         if (err)
1795                                 return err;
1796                 }
1797         }
1798
1799         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
1800                 if (!(data->has_fan & (1 << i)))
1801                         continue;
1802                 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) {
1803                         err = fn(dev, &w83795_fan[i][j].dev_attr);
1804                         if (err)
1805                                 return err;
1806                 }
1807         }
1808
1809         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1810                 err = fn(dev, &sda_single_files[i].dev_attr);
1811                 if (err)
1812                         return err;
1813         }
1814
1815         for (i = 0; i < data->has_pwm; i++) {
1816                 for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) {
1817                         err = fn(dev, &w83795_pwm[i][j].dev_attr);
1818                         if (err)
1819                                 return err;
1820                 }
1821         }
1822
1823         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
1824                 if (!(data->has_temp & (1 << i)))
1825                         continue;
1826                 for (j = 0; j < ARRAY_SIZE(w83795_temp[0]); j++) {
1827                         err = fn(dev, &w83795_temp[i][j].dev_attr);
1828                         if (err)
1829                                 return err;
1830                 }
1831         }
1832
1833         if (data->enable_dts != 0) {
1834                 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
1835                         if (!(data->has_dts & (1 << i)))
1836                                 continue;
1837                         for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) {
1838                                 err = fn(dev, &w83795_dts[i][j].dev_attr);
1839                                 if (err)
1840                                         return err;
1841                         }
1842                 }
1843         }
1844
1845         return 0;
1846 }
1847
1848 /* We need a wrapper that fits in w83795_handle_files */
1849 static int device_remove_file_wrapper(struct device *dev,
1850                                       const struct device_attribute *attr)
1851 {
1852         device_remove_file(dev, attr);
1853         return 0;
1854 }
1855
1856 static void w83795_check_dynamic_in_limits(struct i2c_client *client)
1857 {
1858         struct w83795_data *data = i2c_get_clientdata(client);
1859         u8 vid_ctl;
1860         int i, err_max, err_min;
1861
1862         vid_ctl = w83795_read(client, W83795_REG_VID_CTRL);
1863
1864         /* Return immediately if VRM isn't configured */
1865         if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07)
1866                 return;
1867
1868         data->has_dyn_in = (vid_ctl >> 3) & 0x07;
1869         for (i = 0; i < 2; i++) {
1870                 if (!(data->has_dyn_in & (1 << i)))
1871                         continue;
1872
1873                 /* Voltage limits in dynamic mode, switch to read-only */
1874                 err_max = sysfs_chmod_file(&client->dev.kobj,
1875                                            &w83795_in[i][2].dev_attr.attr,
1876                                            S_IRUGO);
1877                 err_min = sysfs_chmod_file(&client->dev.kobj,
1878                                            &w83795_in[i][3].dev_attr.attr,
1879                                            S_IRUGO);
1880                 if (err_max || err_min)
1881                         dev_warn(&client->dev, "Failed to set in%d limits "
1882                                  "read-only (%d, %d)\n", i, err_max, err_min);
1883                 else
1884                         dev_info(&client->dev, "in%d limits set dynamically "
1885                                  "from VID\n", i);
1886         }
1887 }
1888
1889 /* Check pins that can be used for either temperature or voltage monitoring */
1890 static void w83795_apply_temp_config(struct w83795_data *data, u8 config,
1891                                      int temp_chan, int in_chan)
1892 {
1893         /* config is a 2-bit value */
1894         switch (config) {
1895         case 0x2: /* Voltage monitoring */
1896                 data->has_in |= 1 << in_chan;
1897                 break;
1898         case 0x1: /* Thermal diode */
1899                 if (temp_chan >= 4)
1900                         break;
1901                 data->temp_mode |= 1 << temp_chan;
1902                 /* fall through */
1903         case 0x3: /* Thermistor */
1904                 data->has_temp |= 1 << temp_chan;
1905                 break;
1906         }
1907 }
1908
1909 static int w83795_probe(struct i2c_client *client,
1910                         const struct i2c_device_id *id)
1911 {
1912         int i;
1913         u8 tmp;
1914         struct device *dev = &client->dev;
1915         struct w83795_data *data;
1916         int err;
1917
1918         data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL);
1919         if (!data) {
1920                 err = -ENOMEM;
1921                 goto exit;
1922         }
1923
1924         i2c_set_clientdata(client, data);
1925         data->chip_type = id->driver_data;
1926         data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1927         mutex_init(&data->update_lock);
1928
1929         /* Initialize the chip */
1930         w83795_init_client(client);
1931
1932         /* Check which voltages and fans are present */
1933         data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1)
1934                      | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8);
1935         data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1)
1936                       | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8);
1937
1938         /* Check which analog temperatures and extra voltages are present */
1939         tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
1940         if (tmp & 0x20)
1941                 data->enable_dts = 1;
1942         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16);
1943         w83795_apply_temp_config(data, tmp & 0x3, 4, 15);
1944         tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1945         w83795_apply_temp_config(data, tmp >> 6, 3, 20);
1946         w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19);
1947         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18);
1948         w83795_apply_temp_config(data, tmp & 0x3, 0, 17);
1949
1950         /* Check DTS enable status */
1951         if (data->enable_dts) {
1952                 if (1 & w83795_read(client, W83795_REG_DTSC))
1953                         data->enable_dts |= 2;
1954                 data->has_dts = w83795_read(client, W83795_REG_DTSE);
1955         }
1956
1957         /* Report PECI Tbase values */
1958         if (data->enable_dts == 1) {
1959                 for (i = 0; i < 8; i++) {
1960                         if (!(data->has_dts & (1 << i)))
1961                                 continue;
1962                         tmp = w83795_read(client, W83795_REG_PECI_TBASE(i));
1963                         dev_info(&client->dev,
1964                                  "PECI agent %d Tbase temperature: %u\n",
1965                                  i + 1, (unsigned int)tmp & 0x7f);
1966                 }
1967         }
1968
1969         /* First update the voltages measured value and limits */
1970         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
1971                 if (!(data->has_in & (1 << i)))
1972                         continue;
1973                 data->in[i][IN_MAX] =
1974                         w83795_read(client, W83795_REG_IN[i][IN_MAX]);
1975                 data->in[i][IN_LOW] =
1976                         w83795_read(client, W83795_REG_IN[i][IN_LOW]);
1977                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
1978                 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
1979                 data->in[i][IN_READ] = tmp;
1980         }
1981         for (i = 0; i < IN_LSB_REG_NUM; i++) {
1982                 if ((i == 2 && data->chip_type == w83795adg) ||
1983                     (i >= 4 && !(data->has_in & (1 << (i + 11)))))
1984                         continue;
1985                 data->in_lsb[i][IN_MAX] =
1986                         w83795_read(client, IN_LSB_REG(i, IN_MAX));
1987                 data->in_lsb[i][IN_LOW] =
1988                         w83795_read(client, IN_LSB_REG(i, IN_LOW));
1989         }
1990         data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
1991
1992         /* First update fan and limits */
1993         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
1994                 /* Each register contains LSB for 2 fans, but we want to
1995                  * read it only once to save time */
1996                 if ((i & 1) == 0 && (data->has_fan & (3 << i)))
1997                         tmp = w83795_read(client, W83795_REG_FAN_MIN_LSB(i));
1998
1999                 if (!(data->has_fan & (1 << i)))
2000                         continue;
2001                 data->fan_min[i] =
2002                         w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
2003                 data->fan_min[i] |=
2004                         (tmp >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F;
2005                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
2006                 data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4;
2007         }
2008
2009         /* temperature and limits */
2010         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
2011                 if (!(data->has_temp & (1 << i)))
2012                         continue;
2013                 data->temp[i][TEMP_CRIT] =
2014                         w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT]);
2015                 data->temp[i][TEMP_CRIT_HYST] =
2016                         w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT_HYST]);
2017                 data->temp[i][TEMP_WARN] =
2018                         w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN]);
2019                 data->temp[i][TEMP_WARN_HYST] =
2020                         w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN_HYST]);
2021                 data->temp[i][TEMP_READ] =
2022                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
2023                 data->temp_read_vrlsb[i] =
2024                         w83795_read(client, W83795_REG_VRLSB);
2025         }
2026
2027         /* dts temperature and limits */
2028         if (data->enable_dts != 0) {
2029                 data->dts_ext[DTS_CRIT] =
2030                         w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT));
2031                 data->dts_ext[DTS_CRIT_HYST] =
2032                         w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT_HYST));
2033                 data->dts_ext[DTS_WARN] =
2034                         w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN));
2035                 data->dts_ext[DTS_WARN_HYST] =
2036                         w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN_HYST));
2037                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
2038                         if (!(data->has_dts & (1 << i)))
2039                                 continue;
2040                         data->dts[i] = w83795_read(client, W83795_REG_DTS(i));
2041                         data->dts_read_vrlsb[i] =
2042                                 w83795_read(client, W83795_REG_VRLSB);
2043                 }
2044         }
2045
2046         /* First update temp source selction */
2047         for (i = 0; i < 3; i++)
2048                 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
2049
2050         /* pwm and smart fan */
2051         if (data->chip_type == w83795g)
2052                 data->has_pwm = 8;
2053         else
2054                 data->has_pwm = 2;
2055         data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
2056         data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
2057         for (i = 0; i < W83795_REG_TEMP_NUM; i++)
2058                 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
2059         data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
2060         for (i = 0; i < data->has_pwm; i++) {
2061                 for (tmp = 0; tmp < 5; tmp++) {
2062                         data->pwm[i][tmp] =
2063                                 w83795_read(client, W83795_REG_PWM(i, tmp));
2064                 }
2065         }
2066         for (i = 0; i < 8; i++) {
2067                 data->target_speed[i] =
2068                         w83795_read(client, W83795_REG_FTSH(i)) << 4;
2069                 data->target_speed[i] |=
2070                         w83795_read(client, W83795_REG_FTSL(i)) >> 4;
2071         }
2072         data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
2073
2074         for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
2075                 data->pwm_temp[i][TEMP_PWM_TTTI] =
2076                         w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
2077                 data->pwm_temp[i][TEMP_PWM_CTFS] =
2078                         w83795_read(client, W83795_REG_CTFS(i));
2079                 tmp = w83795_read(client, W83795_REG_HT(i));
2080                 data->pwm_temp[i][TEMP_PWM_HCT] = (tmp >> 4) & 0x0f;
2081                 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
2082         }
2083         for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
2084                 for (tmp = 0; tmp < 7; tmp++) {
2085                         data->sf4_reg[i][SF4_TEMP][tmp] =
2086                                 w83795_read(client,
2087                                             W83795_REG_SF4_TEMP(i, tmp));
2088                         data->sf4_reg[i][SF4_PWM][tmp] =
2089                                 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
2090                 }
2091         }
2092
2093         /* Setup PWM Register */
2094         for (i = 0; i < 3; i++) {
2095                 data->setup_pwm[i] =
2096                         w83795_read(client, W83795_REG_SETUP_PWM(i));
2097         }
2098
2099         /* alarm and beep */
2100         for (i = 0; i < ALARM_BEEP_REG_NUM; i++) {
2101                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
2102                 data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i));
2103         }
2104
2105         err = w83795_handle_files(dev, device_create_file);
2106         if (err)
2107                 goto exit_remove;
2108
2109         if (data->chip_type == w83795g)
2110                 w83795_check_dynamic_in_limits(client);
2111
2112         data->hwmon_dev = hwmon_device_register(dev);
2113         if (IS_ERR(data->hwmon_dev)) {
2114                 err = PTR_ERR(data->hwmon_dev);
2115                 goto exit_remove;
2116         }
2117
2118         return 0;
2119
2120 exit_remove:
2121         w83795_handle_files(dev, device_remove_file_wrapper);
2122         kfree(data);
2123 exit:
2124         return err;
2125 }
2126
2127 static int w83795_remove(struct i2c_client *client)
2128 {
2129         struct w83795_data *data = i2c_get_clientdata(client);
2130
2131         hwmon_device_unregister(data->hwmon_dev);
2132         w83795_handle_files(&client->dev, device_remove_file_wrapper);
2133         kfree(data);
2134
2135         return 0;
2136 }
2137
2138
2139 static const struct i2c_device_id w83795_id[] = {
2140         { "w83795g", w83795g },
2141         { "w83795adg", w83795adg },
2142         { }
2143 };
2144 MODULE_DEVICE_TABLE(i2c, w83795_id);
2145
2146 static struct i2c_driver w83795_driver = {
2147         .driver = {
2148                    .name = "w83795",
2149         },
2150         .probe          = w83795_probe,
2151         .remove         = w83795_remove,
2152         .id_table       = w83795_id,
2153
2154         .class          = I2C_CLASS_HWMON,
2155         .detect         = w83795_detect,
2156         .address_list   = normal_i2c,
2157 };
2158
2159 static int __init sensors_w83795_init(void)
2160 {
2161         return i2c_add_driver(&w83795_driver);
2162 }
2163
2164 static void __exit sensors_w83795_exit(void)
2165 {
2166         i2c_del_driver(&w83795_driver);
2167 }
2168
2169 MODULE_AUTHOR("Wei Song");
2170 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2171 MODULE_LICENSE("GPL");
2172
2173 module_init(sensors_w83795_init);
2174 module_exit(sensors_w83795_exit);