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 unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
  40
  41 enum chips { w83795 };
  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
  54 #define W83795_REG_I2C_ADDR             0xfc
  55 #define W83795_REG_CONFIG               0x01
  56 #define W83795_REG_CONFIG_CONFIG48      0x04
  57
  58 /* Multi-Function Pin Ctrl Registers */
  59 #define W83795_REG_VOLT_CTRL1           0x02
  60 #define W83795_REG_VOLT_CTRL2           0x03
  61 #define W83795_REG_TEMP_CTRL1           0x04
  62 #define W83795_REG_TEMP_CTRL2           0x05
  63 #define W83795_REG_FANIN_CTRL1          0x06
  64 #define W83795_REG_FANIN_CTRL2          0x07
  65 #define W83795_REG_VMIGB_CTRL           0x08
  66
  67 #define TEMP_CTRL_DISABLE               0
  68 #define TEMP_CTRL_TD                    1
  69 #define TEMP_CTRL_VSEN                  2
  70 #define TEMP_CTRL_TR                    3
  71 #define TEMP_CTRL_SHIFT                 4
  72 #define TEMP_CTRL_HASIN_SHIFT           5
  73 /* temp mode may effect VSEN17-12 (in20-15) */
  74 static u16 W83795_REG_TEMP_CTRL[][6] = {
  75         /* Disable, TD, VSEN, TR, register shift value, has_in shift num */
  76         {0x00, 0x01, 0x02, 0x03, 0, 17},        /* TR1 */
  77         {0x00, 0x04, 0x08, 0x0C, 2, 18},        /* TR2 */
  78         {0x00, 0x10, 0x20, 0x30, 4, 19},        /* TR3 */
  79         {0x00, 0x40, 0x80, 0xC0, 6, 20},        /* TR4 */
  80         {0x00, 0x00, 0x02, 0x03, 0, 15},        /* TR5 */
  81         {0x00, 0x00, 0x08, 0x0C, 2, 16},        /* TR6 */
  82 };
  83
  84 #define TEMP_READ                       0
  85 #define TEMP_CRIT                       1
  86 #define TEMP_CRIT_HYST                  2
  87 #define TEMP_WARN                       3
  88 #define TEMP_WARN_HYST                  4
  89 /* only crit and crit_hyst affect real-time alarm status
  90  * current crit crit_hyst warn warn_hyst */
  91 static u16 W83795_REG_TEMP[][5] = {
  92         {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
  93         {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
  94         {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
  95         {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
  96         {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
  97         {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
  98 };
  99
 100 #define IN_READ                         0
 101 #define IN_MAX                          1
 102 #define IN_LOW                          2
 103 static const u16 W83795_REG_IN[][3] = {
 104         /* Current, HL, LL */
 105         {0x10, 0x70, 0x71},     /* VSEN1 */
 106         {0x11, 0x72, 0x73},     /* VSEN2 */
 107         {0x12, 0x74, 0x75},     /* VSEN3 */
 108         {0x13, 0x76, 0x77},     /* VSEN4 */
 109         {0x14, 0x78, 0x79},     /* VSEN5 */
 110         {0x15, 0x7a, 0x7b},     /* VSEN6 */
 111         {0x16, 0x7c, 0x7d},     /* VSEN7 */
 112         {0x17, 0x7e, 0x7f},     /* VSEN8 */
 113         {0x18, 0x80, 0x81},     /* VSEN9 */
 114         {0x19, 0x82, 0x83},     /* VSEN10 */
 115         {0x1A, 0x84, 0x85},     /* VSEN11 */
 116         {0x1B, 0x86, 0x87},     /* VTT */
 117         {0x1C, 0x88, 0x89},     /* 3VDD */
 118         {0x1D, 0x8a, 0x8b},     /* 3VSB */
 119         {0x1E, 0x8c, 0x8d},     /* VBAT */
 120         {0x1F, 0xa6, 0xa7},     /* VSEN12 */
 121         {0x20, 0xaa, 0xab},     /* VSEN13 */
 122         {0x21, 0x96, 0x97},     /* VSEN14 */
 123         {0x22, 0x9a, 0x9b},     /* VSEN15 */
 124         {0x23, 0x9e, 0x9f},     /* VSEN16 */
 125         {0x24, 0xa2, 0xa3},     /* VSEN17 */
 126 };
 127 #define W83795_REG_VRLSB                0x3C
 128 #define VRLSB_SHIFT                     6
 129
 130 static const u8 W83795_REG_IN_HL_LSB[] = {
 131         0x8e,   /* VSEN1-4 */
 132         0x90,   /* VSEN5-8 */
 133         0x92,   /* VSEN9-11 */
 134         0x94,   /* VTT, 3VDD, 3VSB, 3VBAT */
 135         0xa8,   /* VSEN12 */
 136         0xac,   /* VSEN13 */
 137         0x98,   /* VSEN14 */
 138         0x9c,   /* VSEN15 */
 139         0xa0,   /* VSEN16 */
 140         0xa4,   /* VSEN17 */
 141 };
 142
 143 #define IN_LSB_REG(index, type) \
 144         (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
 145         : (W83795_REG_IN_HL_LSB[(index)] + 1))
 146
 147 #define IN_LSB_REG_NUM                  10
 148
 149 #define IN_LSB_SHIFT                    0
 150 #define IN_LSB_IDX                      1
 151 static const u8 IN_LSB_SHIFT_IDX[][2] = {
 152         /* High/Low LSB shift, LSB No. */
 153         {0x00, 0x00},   /* VSEN1 */
 154         {0x02, 0x00},   /* VSEN2 */
 155         {0x04, 0x00},   /* VSEN3 */
 156         {0x06, 0x00},   /* VSEN4 */
 157         {0x00, 0x01},   /* VSEN5 */
 158         {0x02, 0x01},   /* VSEN6 */
 159         {0x04, 0x01},   /* VSEN7 */
 160         {0x06, 0x01},   /* VSEN8 */
 161         {0x00, 0x02},   /* VSEN9 */
 162         {0x02, 0x02},   /* VSEN10 */
 163         {0x04, 0x02},   /* VSEN11 */
 164         {0x00, 0x03},   /* VTT */
 165         {0x02, 0x03},   /* 3VDD */
 166         {0x04, 0x03},   /* 3VSB */
 167         {0x06, 0x03},   /* VBAT */
 168         {0x06, 0x04},   /* VSEN12 */
 169         {0x06, 0x05},   /* VSEN13 */
 170         {0x06, 0x06},   /* VSEN14 */
 171         {0x06, 0x07},   /* VSEN15 */
 172         {0x06, 0x08},   /* VSEN16 */
 173         {0x06, 0x09},   /* VSEN17 */
 174 };
 175
 176
 177 /* 3VDD, 3VSB, VBAT * 0.006 */
 178 #define REST_VLT_BEGIN                  12  /* the 13th volt to 15th */
 179 #define REST_VLT_END                    14  /* the 13th volt to 15th */
 180
 181 #define W83795_REG_FAN(index)           (0x2E + (index))
 182 #define W83795_REG_FAN_MIN_HL(index)    (0xB6 + (index))
 183 #define W83795_REG_FAN_MIN_LSB(index)   (0xC4 + (index) / 2)
 184 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
 185         (((index) % 1) ? 4 : 0)
 186 #define W83795_REG_FAN_CTRL_SHIFT(index) \
 187         (((index) > 7) ? ((index) - 8) : (index))
 188
 189 #define W83795_REG_VID_CTRL             0x6A
 190
 191 #define ALARM_BEEP_REG_NUM              6
 192 #define W83795_REG_ALARM(index)         (0x41 + (index))
 193 #define W83795_REG_BEEP(index)          (0x50 + (index))
 194
 195 #define W83795_REG_CLR_CHASSIS          0x4D
 196
 197
 198 #define W83795_REG_TEMP_NUM             6
 199 #define W83795_REG_FCMS1                0x201
 200 #define W83795_REG_FCMS2                0x208
 201 #define W83795_REG_TFMR(index)          (0x202 + (index))
 202 #define W83795_REG_FOMC                 0x20F
 203 #define W83795_REG_FOPFP(index)         (0x218 + (index))
 204
 205 #define W83795_REG_TSS(index)           (0x209 + (index))
 206
 207 #define PWM_OUTPUT                      0
 208 #define PWM_START                       1
 209 #define PWM_NONSTOP                     2
 210 #define PWM_STOP_TIME                   3
 211 #define PWM_DIV                         4
 212 #define W83795_REG_PWM(index, nr) \
 213         (((nr) == 0 ? 0x210 : \
 214           (nr) == 1 ? 0x220 : \
 215           (nr) == 2 ? 0x228 : \
 216           (nr) == 3 ? 0x230 : 0x218) + (index))
 217
 218 #define W83795_REG_FOPFP_DIV(index) \
 219         (((index) < 8) ? ((index) + 1) : \
 220          ((index) == 8) ? 12 : \
 221          (16 << ((index) - 9)))
 222
 223 #define W83795_REG_FTSH(index)          (0x240 + (index) * 2)
 224 #define W83795_REG_FTSL(index)          (0x241 + (index) * 2)
 225 #define W83795_REG_TFTS                 0x250
 226
 227 #define TEMP_PWM_TTTI                   0
 228 #define TEMP_PWM_CTFS                   1
 229 #define TEMP_PWM_HCT                    2
 230 #define TEMP_PWM_HOT                    3
 231 #define W83795_REG_TTTI(index)          (0x260 + (index))
 232 #define W83795_REG_CTFS(index)          (0x268 + (index))
 233 #define W83795_REG_HT(index)            (0x270 + (index))
 234
 235 #define SF4_TEMP                        0
 236 #define SF4_PWM                         1
 237 #define W83795_REG_SF4_TEMP(temp_num, index) \
 238         (0x280 + 0x10 * (temp_num) + (index))
 239 #define W83795_REG_SF4_PWM(temp_num, index) \
 240         (0x288 + 0x10 * (temp_num) + (index))
 241
 242 #define W83795_REG_DTSC                 0x301
 243 #define W83795_REG_DTSE                 0x302
 244 #define W83795_REG_DTS(index)           (0x26 + (index))
 245
 246 #define DTS_CRIT                        0
 247 #define DTS_CRIT_HYST                   1
 248 #define DTS_WARN                        2
 249 #define DTS_WARN_HYST                   3
 250 #define W83795_REG_DTS_EXT(index)       (0xB2 + (index))
 251
 252 #define SETUP_PWM_DEFAULT               0
 253 #define SETUP_PWM_UPTIME                1
 254 #define SETUP_PWM_DOWNTIME              2
 255 #define W83795_REG_SETUP_PWM(index)    (0x20C + (index))
 256
 257 static inline u16 in_from_reg(u8 index, u16 val)
 258 {
 259         if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END))
 260                 return val * 6;
 261         else
 262                 return val * 2;
 263 }
 264
 265 static inline u16 in_to_reg(u8 index, u16 val)
 266 {
 267         if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END))
 268                 return val / 6;
 269         else
 270                 return val / 2;
 271 }
 272
 273 static inline unsigned long fan_from_reg(u16 val)
 274 {
 275         if ((val >= 0xff0) || (val == 0))
 276                 return 0;
 277         return 1350000UL / val;
 278 }
 279
 280 static inline u16 fan_to_reg(long rpm)
 281 {
 282         if (rpm <= 0)
 283                 return 0x0fff;
 284         return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
 285 }
 286
 287 static inline unsigned long time_from_reg(u8 reg)
 288 {
 289         return reg * 100;
 290 }
 291
 292 static inline u8 time_to_reg(unsigned long val)
 293 {
 294         return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
 295 }
 296
 297 static inline long temp_from_reg(s8 reg)
 298 {
 299         return reg * 1000;
 300 }
 301
 302 static inline s8 temp_to_reg(long val, s8 min, s8 max)
 303 {
 304         return SENSORS_LIMIT((val < 0 ? -val : val) / 1000, min, max);
 305 }
 306
 307
 308 enum chip_types {w83795g, w83795adg};
 309
 310 struct w83795_data {
 311         struct device *hwmon_dev;
 312         struct mutex update_lock;
 313         unsigned long last_updated;     /* In jiffies */
 314         enum chip_types chip_type;
 315
 316         u8 bank;
 317
 318         u32 has_in;             /* Enable monitor VIN or not */
 319         u16 in[21][3];          /* Register value, read/high/low */
 320         u8 in_lsb[10][3];       /* LSB Register value, high/low */
 321         u8 has_gain;            /* has gain: in17-20 * 8 */
 322
 323         u16 has_fan;            /* Enable fan14-1 or not */
 324         u16 fan[14];            /* Register value combine */
 325         u16 fan_min[14];        /* Register value combine */
 326
 327         u8 has_temp;            /* Enable monitor temp6-1 or not */
 328         u8 temp[6][5];          /* current, crit, crit_hyst, warn, warn_hyst */
 329         u8 temp_read_vrlsb[6];
 330         u8 temp_mode;           /* bit 0: TR mode, bit 1: TD mode */
 331         u8 temp_src[3];         /* Register value */
 332
 333         u8 enable_dts;          /* Enable PECI and SB-TSI,
 334                                  * bit 0: =1 enable, =0 disable,
 335                                  * bit 1: =1 AMD SB-TSI, =0 Intel PECI */
 336         u8 has_dts;             /* Enable monitor DTS temp */
 337         u8 dts[8];              /* Register value */
 338         u8 dts_read_vrlsb[8];   /* Register value */
 339         u8 dts_ext[4];          /* Register value */
 340
 341         u8 has_pwm;             /* 795g supports 8 pwm, 795adg only supports 2,
 342                                  * no config register, only affected by chip
 343                                  * type */
 344         u8 pwm[8][5];           /* Register value, output, start, non stop, stop
 345                                  * time, div */
 346         u8 pwm_fcms[2];         /* Register value */
 347         u8 pwm_tfmr[6];         /* Register value */
 348         u8 pwm_fomc;            /* Register value */
 349
 350         u16 target_speed[8];    /* Register value, target speed for speed
 351                                  * cruise */
 352         u8 tol_speed;           /* tolerance of target speed */
 353         u8 pwm_temp[6][4];      /* TTTI, CTFS, HCT, HOT */
 354         u8 sf4_reg[6][2][7];    /* 6 temp, temp/dcpwm, 7 registers */
 355
 356         u8 setup_pwm[3];        /* Register value */
 357
 358         u8 alarms[6];           /* Register value */
 359         u8 beeps[6];            /* Register value */
 360         u8 beep_enable;
 361
 362         char valid;
 363 };
 364
 365 /*
 366  * Hardware access
 367  */
 368
 369 /* Ignore the possibility that somebody change bank outside the driver
 370  * Must be called with data->update_lock held, except during initialization */
 371 static u8 w83795_read(struct i2c_client *client, u16 reg)
 372 {
 373         struct w83795_data *data = i2c_get_clientdata(client);
 374         u8 res = 0xff;
 375         u8 new_bank = reg >> 8;
 376
 377         new_bank |= data->bank & 0xfc;
 378         if (data->bank != new_bank) {
 379                 if (i2c_smbus_write_byte_data
 380                     (client, W83795_REG_BANKSEL, new_bank) >= 0)
 381                         data->bank = new_bank;
 382                 else {
 383                         dev_err(&client->dev,
 384                                 "set bank to %d failed, fall back "
 385                                 "to bank %d, read reg 0x%x error\n",
 386                                 new_bank, data->bank, reg);
 387                         res = 0x0;      /* read 0x0 from the chip */
 388                         goto END;
 389                 }
 390         }
 391         res = i2c_smbus_read_byte_data(client, reg & 0xff);
 392 END:
 393         return res;
 394 }
 395
 396 /* Must be called with data->update_lock held, except during initialization */
 397 static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
 398 {
 399         struct w83795_data *data = i2c_get_clientdata(client);
 400         int res;
 401         u8 new_bank = reg >> 8;
 402
 403         new_bank |= data->bank & 0xfc;
 404         if (data->bank != new_bank) {
 405                 res = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
 406                                                 new_bank);
 407                 if (res >= 0)
 408                         data->bank = new_bank;
 409                 else {
 410                         dev_err(&client->dev,
 411                                 "set bank to %d failed, fall back "
 412                                 "to bank %d, write reg 0x%x error\n",
 413                                 new_bank, data->bank, reg);
 414                         goto END;
 415                 }
 416         }
 417
 418         res = i2c_smbus_write_byte_data(client, reg & 0xff, value);
 419 END:
 420         return res;
 421 }
 422
 423 static struct w83795_data *w83795_update_device(struct device *dev)
 424 {
 425         struct i2c_client *client = to_i2c_client(dev);
 426         struct w83795_data *data = i2c_get_clientdata(client);
 427         u16 tmp;
 428         int i;
 429
 430         mutex_lock(&data->update_lock);
 431
 432         if (!(time_after(jiffies, data->last_updated + HZ * 2)
 433               || !data->valid))
 434                 goto END;
 435
 436         /* Update the voltages value */
 437         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
 438                 if (!(data->has_in & (1 << i)))
 439                         continue;
 440                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
 441                 tmp |= (w83795_read(client, W83795_REG_VRLSB)
 442                         >> VRLSB_SHIFT) & 0x03;
 443                 data->in[i][IN_READ] = tmp;
 444         }
 445
 446         /* Update fan */
 447         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
 448                 if (!(data->has_fan & (1 << i)))
 449                         continue;
 450                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
 451                 data->fan[i] |=
 452                   (w83795_read(client, W83795_REG_VRLSB >> 4)) & 0x0F;
 453         }
 454
 455         /* Update temperature */
 456         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
 457                 /* even stop monitor, register still keep value, just read out
 458                  * it */
 459                 if (!(data->has_temp & (1 << i))) {
 460                         data->temp[i][TEMP_READ] = 0;
 461                         data->temp_read_vrlsb[i] = 0;
 462                         continue;
 463                 }
 464                 data->temp[i][TEMP_READ] =
 465                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
 466                 data->temp_read_vrlsb[i] =
 467                         w83795_read(client, W83795_REG_VRLSB);
 468         }
 469
 470         /* Update dts temperature */
 471         if (data->enable_dts != 0) {
 472                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
 473                         if (!(data->has_dts & (1 << i)))
 474                                 continue;
 475                         data->dts[i] =
 476                                 w83795_read(client, W83795_REG_DTS(i));
 477                         data->dts_read_vrlsb[i] =
 478                                 w83795_read(client, W83795_REG_VRLSB);
 479                 }
 480         }
 481
 482         /* Update pwm output */
 483         for (i = 0; i < data->has_pwm; i++) {
 484                 data->pwm[i][PWM_OUTPUT] =
 485                     w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
 486         }
 487
 488         /* update alarm */
 489         for (i = 0; i < ALARM_BEEP_REG_NUM; i++)
 490                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
 491
 492         data->last_updated = jiffies;
 493         data->valid = 1;
 494
 495 END:
 496         mutex_unlock(&data->update_lock);
 497         return data;
 498 }
 499
 500 /*
 501  * Sysfs attributes
 502  */
 503
 504 #define ALARM_STATUS      0
 505 #define BEEP_ENABLE       1
 506 static ssize_t
 507 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
 508 {
 509         struct w83795_data *data = w83795_update_device(dev);
 510         struct sensor_device_attribute_2 *sensor_attr =
 511             to_sensor_dev_attr_2(attr);
 512         int nr = sensor_attr->nr;
 513         int index = sensor_attr->index >> 3;
 514         int bit = sensor_attr->index & 0x07;
 515         u8 val;
 516
 517         if (ALARM_STATUS == nr) {
 518                 val = (data->alarms[index] >> (bit)) & 1;
 519         } else {                /* BEEP_ENABLE */
 520                 val = (data->beeps[index] >> (bit)) & 1;
 521         }
 522
 523         return sprintf(buf, "%u\n", val);
 524 }
 525
 526 static ssize_t
 527 store_beep(struct device *dev, struct device_attribute *attr,
 528            const char *buf, size_t count)
 529 {
 530         struct i2c_client *client = to_i2c_client(dev);
 531         struct w83795_data *data = i2c_get_clientdata(client);
 532         struct sensor_device_attribute_2 *sensor_attr =
 533             to_sensor_dev_attr_2(attr);
 534         int index = sensor_attr->index >> 3;
 535         int shift = sensor_attr->index & 0x07;
 536         u8 beep_bit = 1 << shift;
 537         unsigned long val;
 538
 539         if (strict_strtoul(buf, 10, &val) < 0)
 540                 return -EINVAL;
 541         if (val != 0 && val != 1)
 542                 return -EINVAL;
 543
 544         mutex_lock(&data->update_lock);
 545         data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
 546         data->beeps[index] &= ~beep_bit;
 547         data->beeps[index] |= val << shift;
 548         w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
 549         mutex_unlock(&data->update_lock);
 550
 551         return count;
 552 }
 553
 554 static ssize_t
 555 show_beep_enable(struct device *dev, struct device_attribute *attr, char *buf)
 556 {
 557         struct i2c_client *client = to_i2c_client(dev);
 558         struct w83795_data *data = i2c_get_clientdata(client);
 559         return sprintf(buf, "%u\n", data->beep_enable);
 560 }
 561
 562 static ssize_t
 563 store_beep_enable(struct device *dev, struct device_attribute *attr,
 564                   const char *buf, size_t count)
 565 {
 566         struct i2c_client *client = to_i2c_client(dev);
 567         struct w83795_data *data = i2c_get_clientdata(client);
 568         unsigned long val;
 569         u8 tmp;
 570
 571         if (strict_strtoul(buf, 10, &val) < 0)
 572                 return -EINVAL;
 573         if (val != 0 && val != 1)
 574                 return -EINVAL;
 575
 576         mutex_lock(&data->update_lock);
 577         data->beep_enable = val;
 578         tmp = w83795_read(client, W83795_REG_BEEP(5));
 579         tmp &= 0x7f;
 580         tmp |= val << 7;
 581         w83795_write(client, W83795_REG_BEEP(5), tmp);
 582         mutex_unlock(&data->update_lock);
 583
 584         return count;
 585 }
 586
 587 /* Write any value to clear chassis alarm */
 588 static ssize_t
 589 store_chassis_clear(struct device *dev,
 590                     struct device_attribute *attr, const char *buf,
 591                     size_t count)
 592 {
 593         struct i2c_client *client = to_i2c_client(dev);
 594         struct w83795_data *data = i2c_get_clientdata(client);
 595         u8 val;
 596
 597         mutex_lock(&data->update_lock);
 598         val = w83795_read(client, W83795_REG_CLR_CHASSIS);
 599         val |= 0x80;
 600         w83795_write(client, W83795_REG_CLR_CHASSIS, val);
 601         mutex_unlock(&data->update_lock);
 602         return count;
 603 }
 604
 605 #define FAN_INPUT     0
 606 #define FAN_MIN       1
 607 static ssize_t
 608 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
 609 {
 610         struct sensor_device_attribute_2 *sensor_attr =
 611             to_sensor_dev_attr_2(attr);
 612         int nr = sensor_attr->nr;
 613         int index = sensor_attr->index;
 614         struct w83795_data *data = w83795_update_device(dev);
 615         u16 val;
 616
 617         if (FAN_INPUT == nr)
 618                 val = data->fan[index] & 0x0fff;
 619         else
 620                 val = data->fan_min[index] & 0x0fff;
 621
 622         return sprintf(buf, "%lu\n", fan_from_reg(val));
 623 }
 624
 625 static ssize_t
 626 store_fan_min(struct device *dev, struct device_attribute *attr,
 627               const char *buf, size_t count)
 628 {
 629         struct sensor_device_attribute_2 *sensor_attr =
 630             to_sensor_dev_attr_2(attr);
 631         int index = sensor_attr->index;
 632         struct i2c_client *client = to_i2c_client(dev);
 633         struct w83795_data *data = i2c_get_clientdata(client);
 634         unsigned long val;
 635
 636         if (strict_strtoul(buf, 10, &val))
 637                 return -EINVAL;
 638         val = fan_to_reg(val);
 639
 640         mutex_lock(&data->update_lock);
 641         data->fan_min[index] = val;
 642         w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
 643         val &= 0x0f;
 644         if (index % 1) {
 645                 val <<= 4;
 646                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 647                        & 0x0f;
 648         } else {
 649                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 650                        & 0xf0;
 651         }
 652         w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
 653         mutex_unlock(&data->update_lock);
 654
 655         return count;
 656 }
 657
 658 static ssize_t
 659 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 660 {
 661         struct w83795_data *data = w83795_update_device(dev);
 662         struct sensor_device_attribute_2 *sensor_attr =
 663             to_sensor_dev_attr_2(attr);
 664         int nr = sensor_attr->nr;
 665         int index = sensor_attr->index;
 666         u16 val;
 667
 668         switch (nr) {
 669         case PWM_STOP_TIME:
 670                 val = time_from_reg(data->pwm[index][nr]);
 671                 break;
 672         case PWM_DIV:
 673                 val = W83795_REG_FOPFP_DIV(data->pwm[index][nr] & 0x0f);
 674                 break;
 675         default:
 676                 val = data->pwm[index][nr];
 677                 break;
 678         }
 679
 680         return sprintf(buf, "%u\n", val);
 681 }
 682
 683 static ssize_t
 684 store_pwm(struct device *dev, struct device_attribute *attr,
 685           const char *buf, size_t count)
 686 {
 687         struct i2c_client *client = to_i2c_client(dev);
 688         struct w83795_data *data = i2c_get_clientdata(client);
 689         struct sensor_device_attribute_2 *sensor_attr =
 690             to_sensor_dev_attr_2(attr);
 691         int nr = sensor_attr->nr;
 692         int index = sensor_attr->index;
 693         unsigned long val;
 694         int i;
 695
 696         if (strict_strtoul(buf, 10, &val) < 0)
 697                 return -EINVAL;
 698
 699         mutex_lock(&data->update_lock);
 700         switch (nr) {
 701         case PWM_STOP_TIME:
 702                 val = time_to_reg(val);
 703                 break;
 704         case PWM_DIV:
 705                 for (i = 0; i < 16; i++) {
 706                         if (W83795_REG_FOPFP_DIV(i) == val) {
 707                                 val = i;
 708                                 break;
 709                         }
 710                 }
 711                 if (i >= 16)
 712                         goto err_end;
 713                 val |= w83795_read(client, W83795_REG_PWM(index, nr)) & 0x80;
 714                 break;
 715         default:
 716                 val = SENSORS_LIMIT(val, 0, 0xff);
 717                 break;
 718         }
 719         w83795_write(client, W83795_REG_PWM(index, nr), val);
 720         data->pwm[index][nr] = val & 0xff;
 721         mutex_unlock(&data->update_lock);
 722         return count;
 723 err_end:
 724         mutex_unlock(&data->update_lock);
 725         return -EINVAL;
 726 }
 727
 728 static ssize_t
 729 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
 730 {
 731         struct sensor_device_attribute_2 *sensor_attr =
 732             to_sensor_dev_attr_2(attr);
 733         struct i2c_client *client = to_i2c_client(dev);
 734         struct w83795_data *data = i2c_get_clientdata(client);
 735         int index = sensor_attr->index;
 736         u8 tmp;
 737
 738         if (1 == (data->pwm_fcms[0] & (1 << index))) {
 739                 tmp = 2;
 740                 goto out;
 741         }
 742         for (tmp = 0; tmp < 6; tmp++) {
 743                 if (data->pwm_tfmr[tmp] & (1 << index)) {
 744                         tmp = 3;
 745                         goto out;
 746                 }
 747         }
 748         if (data->pwm_fomc & (1 << index))
 749                 tmp = 0;
 750         else
 751                 tmp = 1;
 752
 753 out:
 754         return sprintf(buf, "%u\n", tmp);
 755 }
 756
 757 static ssize_t
 758 store_pwm_enable(struct device *dev, struct device_attribute *attr,
 759           const char *buf, size_t count)
 760 {
 761         struct i2c_client *client = to_i2c_client(dev);
 762         struct w83795_data *data = i2c_get_clientdata(client);
 763         struct sensor_device_attribute_2 *sensor_attr =
 764             to_sensor_dev_attr_2(attr);
 765         int index = sensor_attr->index;
 766         unsigned long val;
 767         int i;
 768
 769         if (strict_strtoul(buf, 10, &val) < 0)
 770                 return -EINVAL;
 771         if (val > 2)
 772                 return -EINVAL;
 773
 774         mutex_lock(&data->update_lock);
 775         switch (val) {
 776         case 0:
 777         case 1:
 778                 data->pwm_fcms[0] &= ~(1 << index);
 779                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 780                 for (i = 0; i < 6; i++) {
 781                         data->pwm_tfmr[i] &= ~(1 << index);
 782                         w83795_write(client, W83795_REG_TFMR(i),
 783                                 data->pwm_tfmr[i]);
 784                 }
 785                 data->pwm_fomc |= 1 << index;
 786                 data->pwm_fomc ^= val << index;
 787                 w83795_write(client, W83795_REG_FOMC, data->pwm_fomc);
 788                 break;
 789         case 2:
 790                 data->pwm_fcms[0] |= (1 << index);
 791                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 792                 break;
 793         }
 794         mutex_unlock(&data->update_lock);
 795         return count;
 796
 797         mutex_unlock(&data->update_lock);
 798         return -EINVAL;
 799 }
 800
 801 static ssize_t
 802 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
 803 {
 804         struct sensor_device_attribute_2 *sensor_attr =
 805             to_sensor_dev_attr_2(attr);
 806         struct i2c_client *client = to_i2c_client(dev);
 807         struct w83795_data *data = i2c_get_clientdata(client);
 808         int index = sensor_attr->index;
 809         u8 val = index / 2;
 810         u8 tmp = data->temp_src[val];
 811
 812         if (index % 1)
 813                 val = 4;
 814         else
 815                 val = 0;
 816         tmp >>= val;
 817         tmp &= 0x0f;
 818
 819         return sprintf(buf, "%u\n", tmp);
 820 }
 821
 822 static ssize_t
 823 store_temp_src(struct device *dev, struct device_attribute *attr,
 824           const char *buf, size_t count)
 825 {
 826         struct i2c_client *client = to_i2c_client(dev);
 827         struct w83795_data *data = i2c_get_clientdata(client);
 828         struct sensor_device_attribute_2 *sensor_attr =
 829             to_sensor_dev_attr_2(attr);
 830         int index = sensor_attr->index;
 831         unsigned long tmp;
 832         u8 val = index / 2;
 833
 834         if (strict_strtoul(buf, 10, &tmp) < 0)
 835                 return -EINVAL;
 836         tmp = SENSORS_LIMIT(tmp, 0, 15);
 837
 838         mutex_lock(&data->update_lock);
 839         if (index % 1) {
 840                 tmp <<= 4;
 841                 data->temp_src[val] &= 0x0f;
 842         } else {
 843                 data->temp_src[val] &= 0xf0;
 844         }
 845         data->temp_src[val] |= tmp;
 846         w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
 847         mutex_unlock(&data->update_lock);
 848
 849         return count;
 850 }
 851
 852 #define TEMP_PWM_ENABLE   0
 853 #define TEMP_PWM_FAN_MAP  1
 854 static ssize_t
 855 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 856                      char *buf)
 857 {
 858         struct i2c_client *client = to_i2c_client(dev);
 859         struct w83795_data *data = i2c_get_clientdata(client);
 860         struct sensor_device_attribute_2 *sensor_attr =
 861             to_sensor_dev_attr_2(attr);
 862         int nr = sensor_attr->nr;
 863         int index = sensor_attr->index;
 864         u8 tmp = 0xff;
 865
 866         switch (nr) {
 867         case TEMP_PWM_ENABLE:
 868                 tmp = (data->pwm_fcms[1] >> index) & 1;
 869                 if (tmp)
 870                         tmp = 4;
 871                 else
 872                         tmp = 3;
 873                 break;
 874         case TEMP_PWM_FAN_MAP:
 875                 tmp = data->pwm_tfmr[index];
 876                 break;
 877         }
 878
 879         return sprintf(buf, "%u\n", tmp);
 880 }
 881
 882 static ssize_t
 883 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 884           const char *buf, size_t count)
 885 {
 886         struct i2c_client *client = to_i2c_client(dev);
 887         struct w83795_data *data = i2c_get_clientdata(client);
 888         struct sensor_device_attribute_2 *sensor_attr =
 889             to_sensor_dev_attr_2(attr);
 890         int nr = sensor_attr->nr;
 891         int index = sensor_attr->index;
 892         unsigned long tmp;
 893
 894         if (strict_strtoul(buf, 10, &tmp) < 0)
 895                 return -EINVAL;
 896
 897         switch (nr) {
 898         case TEMP_PWM_ENABLE:
 899                 if ((tmp != 3) && (tmp != 4))
 900                         return -EINVAL;
 901                 tmp -= 3;
 902                 mutex_lock(&data->update_lock);
 903                 data->pwm_fcms[1] &= ~(1 << index);
 904                 data->pwm_fcms[1] |= tmp << index;
 905                 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
 906                 mutex_unlock(&data->update_lock);
 907                 break;
 908         case TEMP_PWM_FAN_MAP:
 909                 mutex_lock(&data->update_lock);
 910                 tmp = SENSORS_LIMIT(tmp, 0, 0xff);
 911                 w83795_write(client, W83795_REG_TFMR(index), tmp);
 912                 data->pwm_tfmr[index] = tmp;
 913                 mutex_unlock(&data->update_lock);
 914                 break;
 915         }
 916         return count;
 917 }
 918
 919 #define FANIN_TARGET   0
 920 #define FANIN_TOL      1
 921 static ssize_t
 922 show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
 923 {
 924         struct i2c_client *client = to_i2c_client(dev);
 925         struct w83795_data *data = i2c_get_clientdata(client);
 926         struct sensor_device_attribute_2 *sensor_attr =
 927             to_sensor_dev_attr_2(attr);
 928         int nr = sensor_attr->nr;
 929         int index = sensor_attr->index;
 930         u16 tmp = 0;
 931
 932         switch (nr) {
 933         case FANIN_TARGET:
 934                 tmp = fan_from_reg(data->target_speed[index]);
 935                 break;
 936         case FANIN_TOL:
 937                 tmp = data->tol_speed;
 938                 break;
 939         }
 940
 941         return sprintf(buf, "%u\n", tmp);
 942 }
 943
 944 static ssize_t
 945 store_fanin(struct device *dev, struct device_attribute *attr,
 946           const char *buf, size_t count)
 947 {
 948         struct i2c_client *client = to_i2c_client(dev);
 949         struct w83795_data *data = i2c_get_clientdata(client);
 950         struct sensor_device_attribute_2 *sensor_attr =
 951             to_sensor_dev_attr_2(attr);
 952         int nr = sensor_attr->nr;
 953         int index = sensor_attr->index;
 954         unsigned long val;
 955
 956         if (strict_strtoul(buf, 10, &val) < 0)
 957                 return -EINVAL;
 958
 959         mutex_lock(&data->update_lock);
 960         switch (nr) {
 961         case FANIN_TARGET:
 962                 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff));
 963                 w83795_write(client, W83795_REG_FTSH(index), (val >> 4) & 0xff);
 964                 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
 965                 data->target_speed[index] = val;
 966                 break;
 967         case FANIN_TOL:
 968                 val = SENSORS_LIMIT(val, 0, 0x3f);
 969                 w83795_write(client, W83795_REG_TFTS, val);
 970                 data->tol_speed = val;
 971                 break;
 972         }
 973         mutex_unlock(&data->update_lock);
 974
 975         return count;
 976 }
 977
 978
 979 static ssize_t
 980 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 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         long tmp = temp_from_reg(data->pwm_temp[index][nr]);
 989
 990         return sprintf(buf, "%ld\n", tmp);
 991 }
 992
 993 static ssize_t
 994 store_temp_pwm(struct device *dev, struct device_attribute *attr,
 995           const char *buf, size_t count)
 996 {
 997         struct i2c_client *client = to_i2c_client(dev);
 998         struct w83795_data *data = i2c_get_clientdata(client);
 999         struct sensor_device_attribute_2 *sensor_attr =
1000             to_sensor_dev_attr_2(attr);
1001         int nr = sensor_attr->nr;
1002         int index = sensor_attr->index;
1003         unsigned long val;
1004         u8 tmp;
1005
1006         if (strict_strtoul(buf, 10, &val) < 0)
1007                 return -EINVAL;
1008         val /= 1000;
1009
1010         mutex_lock(&data->update_lock);
1011         switch (nr) {
1012         case TEMP_PWM_TTTI:
1013                 val = SENSORS_LIMIT(val, 0, 0x7f);
1014                 w83795_write(client, W83795_REG_TTTI(index), val);
1015                 break;
1016         case TEMP_PWM_CTFS:
1017                 val = SENSORS_LIMIT(val, 0, 0x7f);
1018                 w83795_write(client, W83795_REG_CTFS(index), val);
1019                 break;
1020         case TEMP_PWM_HCT:
1021                 val = SENSORS_LIMIT(val, 0, 0x0f);
1022                 tmp = w83795_read(client, W83795_REG_HT(index));
1023                 tmp &= 0x0f;
1024                 tmp |= (val << 4) & 0xf0;
1025                 w83795_write(client, W83795_REG_HT(index), tmp);
1026                 break;
1027         case TEMP_PWM_HOT:
1028                 val = SENSORS_LIMIT(val, 0, 0x0f);
1029                 tmp = w83795_read(client, W83795_REG_HT(index));
1030                 tmp &= 0xf0;
1031                 tmp |= val & 0x0f;
1032                 w83795_write(client, W83795_REG_HT(index), tmp);
1033                 break;
1034         }
1035         data->pwm_temp[index][nr] = val;
1036         mutex_unlock(&data->update_lock);
1037
1038         return count;
1039 }
1040
1041 static ssize_t
1042 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
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
1051         return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1052 }
1053
1054 static ssize_t
1055 store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1056           const char *buf, size_t count)
1057 {
1058         struct i2c_client *client = to_i2c_client(dev);
1059         struct w83795_data *data = i2c_get_clientdata(client);
1060         struct sensor_device_attribute_2 *sensor_attr =
1061             to_sensor_dev_attr_2(attr);
1062         int nr = sensor_attr->nr;
1063         int index = sensor_attr->index;
1064         unsigned long val;
1065
1066         if (strict_strtoul(buf, 10, &val) < 0)
1067                 return -EINVAL;
1068
1069         mutex_lock(&data->update_lock);
1070         w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1071         data->sf4_reg[index][SF4_PWM][nr] = val;
1072         mutex_unlock(&data->update_lock);
1073
1074         return count;
1075 }
1076
1077 static ssize_t
1078 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1079 {
1080         struct i2c_client *client = to_i2c_client(dev);
1081         struct w83795_data *data = i2c_get_clientdata(client);
1082         struct sensor_device_attribute_2 *sensor_attr =
1083             to_sensor_dev_attr_2(attr);
1084         int nr = sensor_attr->nr;
1085         int index = sensor_attr->index;
1086
1087         return sprintf(buf, "%u\n",
1088                 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1089 }
1090
1091 static ssize_t
1092 store_sf4_temp(struct device *dev, struct device_attribute *attr,
1093           const char *buf, size_t count)
1094 {
1095         struct i2c_client *client = to_i2c_client(dev);
1096         struct w83795_data *data = i2c_get_clientdata(client);
1097         struct sensor_device_attribute_2 *sensor_attr =
1098             to_sensor_dev_attr_2(attr);
1099         int nr = sensor_attr->nr;
1100         int index = sensor_attr->index;
1101         unsigned long val;
1102
1103         if (strict_strtoul(buf, 10, &val) < 0)
1104                 return -EINVAL;
1105         val /= 1000;
1106
1107         mutex_lock(&data->update_lock);
1108         w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1109         data->sf4_reg[index][SF4_TEMP][nr] = val;
1110         mutex_unlock(&data->update_lock);
1111
1112         return count;
1113 }
1114
1115
1116 static ssize_t
1117 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1118 {
1119         struct sensor_device_attribute_2 *sensor_attr =
1120             to_sensor_dev_attr_2(attr);
1121         int nr = sensor_attr->nr;
1122         int index = sensor_attr->index;
1123         struct w83795_data *data = w83795_update_device(dev);
1124         long temp = temp_from_reg(data->temp[index][nr] & 0x7f);
1125
1126         if (TEMP_READ == nr)
1127                 temp += ((data->temp_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03)
1128                         * 250;
1129         if (data->temp[index][nr] & 0x80)
1130                 temp = -temp;
1131         return sprintf(buf, "%ld\n", temp);
1132 }
1133
1134 static ssize_t
1135 store_temp(struct device *dev, struct device_attribute *attr,
1136            const char *buf, size_t count)
1137 {
1138         struct sensor_device_attribute_2 *sensor_attr =
1139             to_sensor_dev_attr_2(attr);
1140         int nr = sensor_attr->nr;
1141         int index = sensor_attr->index;
1142         struct i2c_client *client = to_i2c_client(dev);
1143         struct w83795_data *data = i2c_get_clientdata(client);
1144         long tmp;
1145
1146         if (strict_strtol(buf, 10, &tmp) < 0)
1147                 return -EINVAL;
1148
1149         mutex_lock(&data->update_lock);
1150         data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1151         w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1152         mutex_unlock(&data->update_lock);
1153         return count;
1154 }
1155
1156
1157 static ssize_t
1158 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1159 {
1160         struct i2c_client *client = to_i2c_client(dev);
1161         struct w83795_data *data = i2c_get_clientdata(client);
1162         struct sensor_device_attribute_2 *sensor_attr =
1163             to_sensor_dev_attr_2(attr);
1164         int index = sensor_attr->index;
1165         u8 tmp;
1166
1167         if (data->enable_dts == 0)
1168                 return sprintf(buf, "%d\n", 0);
1169
1170         if ((data->has_dts >> index) & 0x01) {
1171                 if (data->enable_dts & 2)
1172                         tmp = 5;
1173                 else
1174                         tmp = 6;
1175         } else {
1176                 tmp = 0;
1177         }
1178
1179         return sprintf(buf, "%d\n", tmp);
1180 }
1181
1182 static ssize_t
1183 show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1184 {
1185         struct sensor_device_attribute_2 *sensor_attr =
1186             to_sensor_dev_attr_2(attr);
1187         int index = sensor_attr->index;
1188         struct w83795_data *data = w83795_update_device(dev);
1189         long temp = temp_from_reg(data->dts[index] & 0x7f);
1190
1191         temp += ((data->dts_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03) * 250;
1192         if (data->dts[index] & 0x80)
1193                 temp = -temp;
1194         return sprintf(buf, "%ld\n", temp);
1195 }
1196
1197 static ssize_t
1198 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1199 {
1200         struct sensor_device_attribute_2 *sensor_attr =
1201             to_sensor_dev_attr_2(attr);
1202         int nr = sensor_attr->nr;
1203         struct i2c_client *client = to_i2c_client(dev);
1204         struct w83795_data *data = i2c_get_clientdata(client);
1205         long temp = temp_from_reg(data->dts_ext[nr] & 0x7f);
1206
1207         if (data->dts_ext[nr] & 0x80)
1208                 temp = -temp;
1209         return sprintf(buf, "%ld\n", temp);
1210 }
1211
1212 static ssize_t
1213 store_dts_ext(struct device *dev, struct device_attribute *attr,
1214            const char *buf, size_t count)
1215 {
1216         struct sensor_device_attribute_2 *sensor_attr =
1217             to_sensor_dev_attr_2(attr);
1218         int nr = sensor_attr->nr;
1219         struct i2c_client *client = to_i2c_client(dev);
1220         struct w83795_data *data = i2c_get_clientdata(client);
1221         long tmp;
1222
1223         if (strict_strtol(buf, 10, &tmp) < 0)
1224                 return -EINVAL;
1225
1226         mutex_lock(&data->update_lock);
1227         data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1228         w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1229         mutex_unlock(&data->update_lock);
1230         return count;
1231 }
1232
1233
1234 /*
1235         Type 3:  Thermal diode
1236         Type 4:  Thermistor
1237
1238         Temp5-6, default TR
1239         Temp1-4, default TD
1240 */
1241
1242 static ssize_t
1243 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1244 {
1245         struct i2c_client *client = to_i2c_client(dev);
1246         struct w83795_data *data = i2c_get_clientdata(client);
1247         struct sensor_device_attribute_2 *sensor_attr =
1248             to_sensor_dev_attr_2(attr);
1249         int index = sensor_attr->index;
1250         u8 tmp;
1251
1252         if (data->has_temp >> index & 0x01) {
1253                 if (data->temp_mode >> index & 0x01)
1254                         tmp = 3;
1255                 else
1256                         tmp = 4;
1257         } else {
1258                 tmp = 0;
1259         }
1260
1261         return sprintf(buf, "%d\n", tmp);
1262 }
1263
1264 static ssize_t
1265 store_temp_mode(struct device *dev, struct device_attribute *attr,
1266                 const char *buf, size_t count)
1267 {
1268         struct i2c_client *client = to_i2c_client(dev);
1269         struct w83795_data *data = i2c_get_clientdata(client);
1270         struct sensor_device_attribute_2 *sensor_attr =
1271             to_sensor_dev_attr_2(attr);
1272         int index = sensor_attr->index;
1273         unsigned long val;
1274         u8 tmp;
1275         u32 mask;
1276
1277         if (strict_strtoul(buf, 10, &val) < 0)
1278                 return -EINVAL;
1279         if ((val != 4) && (val != 3))
1280                 return -EINVAL;
1281         if ((index > 3) && (val == 3))
1282                 return -EINVAL;
1283
1284         mutex_lock(&data->update_lock);
1285         if (val == 3) {
1286                 val = TEMP_CTRL_TD;
1287                 data->has_temp |= 1 << index;
1288                 data->temp_mode |= 1 << index;
1289         } else if (val == 4) {
1290                 val = TEMP_CTRL_TR;
1291                 data->has_temp |= 1 << index;
1292                 tmp = 1 << index;
1293                 data->temp_mode &= ~tmp;
1294         }
1295
1296         if (index > 3)
1297                 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
1298         else
1299                 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1300
1301         mask = 0x03 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_SHIFT];
1302         tmp &= ~mask;
1303         tmp |= W83795_REG_TEMP_CTRL[index][val];
1304
1305         mask = 1 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_HASIN_SHIFT];
1306         data->has_in &= ~mask;
1307
1308         if (index > 3)
1309                 w83795_write(client, W83795_REG_TEMP_CTRL1, tmp);
1310         else
1311                 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1312
1313         mutex_unlock(&data->update_lock);
1314         return count;
1315 }
1316
1317
1318 /* show/store VIN */
1319 static ssize_t
1320 show_in(struct device *dev, struct device_attribute *attr, char *buf)
1321 {
1322         struct sensor_device_attribute_2 *sensor_attr =
1323             to_sensor_dev_attr_2(attr);
1324         int nr = sensor_attr->nr;
1325         int index = sensor_attr->index;
1326         struct w83795_data *data = w83795_update_device(dev);
1327         u16 val = data->in[index][nr];
1328         u8 lsb_idx;
1329
1330         switch (nr) {
1331         case IN_READ:
1332                 /* calculate this value again by sensors as sensors3.conf */
1333                 if ((index >= 17) &&
1334                     ((data->has_gain >> (index - 17)) & 1))
1335                         val *= 8;
1336                 break;
1337         case IN_MAX:
1338         case IN_LOW:
1339                 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1340                 val <<= 2;
1341                 val |= (data->in_lsb[lsb_idx][nr] >>
1342                         IN_LSB_SHIFT_IDX[lsb_idx][IN_LSB_SHIFT]) & 0x03;
1343                 if ((index >= 17) &&
1344                     ((data->has_gain >> (index - 17)) & 1))
1345                         val *= 8;
1346                 break;
1347         }
1348         val = in_from_reg(index, val);
1349
1350         return sprintf(buf, "%d\n", val);
1351 }
1352
1353 static ssize_t
1354 store_in(struct device *dev, struct device_attribute *attr,
1355          const char *buf, size_t count)
1356 {
1357         struct sensor_device_attribute_2 *sensor_attr =
1358             to_sensor_dev_attr_2(attr);
1359         int nr = sensor_attr->nr;
1360         int index = sensor_attr->index;
1361         struct i2c_client *client = to_i2c_client(dev);
1362         struct w83795_data *data = i2c_get_clientdata(client);
1363         unsigned long val;
1364         u8 tmp;
1365         u8 lsb_idx;
1366
1367         if (strict_strtoul(buf, 10, &val) < 0)
1368                 return -EINVAL;
1369         val = in_to_reg(index, val);
1370
1371         if ((index >= 17) &&
1372             ((data->has_gain >> (index - 17)) & 1))
1373                 val /= 8;
1374         val = SENSORS_LIMIT(val, 0, 0x3FF);
1375         mutex_lock(&data->update_lock);
1376
1377         lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1378         tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1379         tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1380         tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1381         w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1382         data->in_lsb[lsb_idx][nr] = tmp;
1383
1384         tmp = (val >> 2) & 0xff;
1385         w83795_write(client, W83795_REG_IN[index][nr], tmp);
1386         data->in[index][nr] = tmp;
1387
1388         mutex_unlock(&data->update_lock);
1389         return count;
1390 }
1391
1392
1393 static ssize_t
1394 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1395 {
1396         struct sensor_device_attribute_2 *sensor_attr =
1397             to_sensor_dev_attr_2(attr);
1398         int nr = sensor_attr->nr;
1399         struct i2c_client *client = to_i2c_client(dev);
1400         struct w83795_data *data = i2c_get_clientdata(client);
1401         u16 val = data->setup_pwm[nr];
1402
1403         switch (nr) {
1404         case SETUP_PWM_UPTIME:
1405         case SETUP_PWM_DOWNTIME:
1406                 val = time_from_reg(val);
1407                 break;
1408         }
1409
1410         return sprintf(buf, "%d\n", val);
1411 }
1412
1413 static ssize_t
1414 store_sf_setup(struct device *dev, struct device_attribute *attr,
1415          const char *buf, size_t count)
1416 {
1417         struct sensor_device_attribute_2 *sensor_attr =
1418             to_sensor_dev_attr_2(attr);
1419         int nr = sensor_attr->nr;
1420         struct i2c_client *client = to_i2c_client(dev);
1421         struct w83795_data *data = i2c_get_clientdata(client);
1422         unsigned long val;
1423
1424         if (strict_strtoul(buf, 10, &val) < 0)
1425                 return -EINVAL;
1426
1427         switch (nr) {
1428         case SETUP_PWM_DEFAULT:
1429                 val = SENSORS_LIMIT(val, 0, 0xff);
1430                 break;
1431         case SETUP_PWM_UPTIME:
1432         case SETUP_PWM_DOWNTIME:
1433                 val = time_to_reg(val);
1434                 if (val == 0)
1435                         return -EINVAL;
1436                 break;
1437         }
1438
1439         mutex_lock(&data->update_lock);
1440         data->setup_pwm[nr] = val;
1441         w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1442         mutex_unlock(&data->update_lock);
1443         return count;
1444 }
1445
1446
1447 #define NOT_USED                        -1
1448
1449 #define SENSOR_ATTR_IN(index)           \
1450         SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL,        \
1451                 IN_READ, index), \
1452         SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in,      \
1453                 store_in, IN_MAX, index),                               \
1454         SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in,      \
1455                 store_in, IN_LOW, index),                               \
1456         SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep,      \
1457                 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1458         SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO,              \
1459                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1460                 index + ((index > 14) ? 1 : 0))
1461
1462 #define SENSOR_ATTR_FAN(index)                                          \
1463         SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan,            \
1464                 NULL, FAN_INPUT, index - 1), \
1465         SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO,              \
1466                 show_fan, store_fan_min, FAN_MIN, index - 1),   \
1467         SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep,     \
1468                 NULL, ALARM_STATUS, index + 31),                        \
1469         SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO,             \
1470                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31)
1471
1472 #define SENSOR_ATTR_PWM(index)                                          \
1473         SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm,          \
1474                 store_pwm, PWM_OUTPUT, index - 1),                      \
1475         SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO,          \
1476                 show_pwm, store_pwm, PWM_NONSTOP, index - 1),           \
1477         SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO,            \
1478                 show_pwm, store_pwm, PWM_START, index - 1),             \
1479         SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO,        \
1480                 show_pwm, store_pwm, PWM_STOP_TIME, index - 1),  \
1481         SENSOR_ATTR_2(fan##index##_div, S_IWUSR | S_IRUGO,      \
1482                 show_pwm, store_pwm, PWM_DIV, index - 1),        \
1483         SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO,           \
1484                 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1)
1485
1486 #define SENSOR_ATTR_FANIN_TARGET(index)                                 \
1487         SENSOR_ATTR_2(speed_cruise##index##_target, S_IWUSR | S_IRUGO, \
1488                 show_fanin, store_fanin, FANIN_TARGET, index - 1)
1489
1490 #define SENSOR_ATTR_DTS(index)                                          \
1491         SENSOR_ATTR_2(temp##index##_type, S_IRUGO ,             \
1492                 show_dts_mode, NULL, NOT_USED, index - 7),      \
1493         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts,           \
1494                 NULL, NOT_USED, index - 7),                             \
1495         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1496                 store_dts_ext, DTS_CRIT, NOT_USED),                     \
1497         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1498                 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED),  \
1499         SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_dts_ext, \
1500                 store_dts_ext, DTS_WARN, NOT_USED),                     \
1501         SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR,       \
1502                 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED),  \
1503         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1504                 show_alarm_beep, NULL, ALARM_STATUS, index + 17),       \
1505         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1506                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17)
1507
1508 #define SENSOR_ATTR_TEMP(index)                                         \
1509         SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR,            \
1510                 show_temp_mode, store_temp_mode, NOT_USED, index - 1),  \
1511         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp,          \
1512                 NULL, TEMP_READ, index - 1),                            \
1513         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp,  \
1514                 store_temp, TEMP_CRIT, index - 1),                      \
1515         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1516                 show_temp, store_temp, TEMP_CRIT_HYST, index - 1),      \
1517         SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_temp, \
1518                 store_temp, TEMP_WARN, index - 1),                      \
1519         SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR,       \
1520                 show_temp, store_temp, TEMP_WARN_HYST, index - 1),      \
1521         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1522                 show_alarm_beep, NULL, ALARM_STATUS,                    \
1523                 index + (index > 4 ? 11 : 17)),                         \
1524         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1525                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1526                 index + (index > 4 ? 11 : 17)),                         \
1527         SENSOR_ATTR_2(temp##index##_source_sel, S_IWUSR | S_IRUGO,      \
1528                 show_temp_src, store_temp_src, NOT_USED, index - 1),    \
1529         SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO,      \
1530                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1531                 TEMP_PWM_ENABLE, index - 1),                            \
1532         SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1533                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1534                 TEMP_PWM_FAN_MAP, index - 1),                           \
1535         SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO,         \
1536                 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1537         SENSOR_ATTR_2(temp##index##_crit, S_IWUSR | S_IRUGO,            \
1538                 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1539         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IWUSR | S_IRUGO,       \
1540                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1541         SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO,  \
1542                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1543         SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1544                 show_sf4_pwm, store_sf4_pwm, 0, index - 1),             \
1545         SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1546                 show_sf4_pwm, store_sf4_pwm, 1, index - 1),             \
1547         SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1548                 show_sf4_pwm, store_sf4_pwm, 2, index - 1),             \
1549         SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1550                 show_sf4_pwm, store_sf4_pwm, 3, index - 1),             \
1551         SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1552                 show_sf4_pwm, store_sf4_pwm, 4, index - 1),             \
1553         SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1554                 show_sf4_pwm, store_sf4_pwm, 5, index - 1),             \
1555         SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1556                 show_sf4_pwm, store_sf4_pwm, 6, index - 1),             \
1557         SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1558                 show_sf4_temp, store_sf4_temp, 0, index - 1),           \
1559         SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1560                 show_sf4_temp, store_sf4_temp, 1, index - 1),           \
1561         SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1562                 show_sf4_temp, store_sf4_temp, 2, index - 1),           \
1563         SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1564                 show_sf4_temp, store_sf4_temp, 3, index - 1),           \
1565         SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1566                 show_sf4_temp, store_sf4_temp, 4, index - 1),           \
1567         SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1568                 show_sf4_temp, store_sf4_temp, 5, index - 1),           \
1569         SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1570                 show_sf4_temp, store_sf4_temp, 6, index - 1)
1571
1572
1573 static struct sensor_device_attribute_2 w83795_in[] = {
1574         SENSOR_ATTR_IN(0),
1575         SENSOR_ATTR_IN(1),
1576         SENSOR_ATTR_IN(2),
1577         SENSOR_ATTR_IN(3),
1578         SENSOR_ATTR_IN(4),
1579         SENSOR_ATTR_IN(5),
1580         SENSOR_ATTR_IN(6),
1581         SENSOR_ATTR_IN(7),
1582         SENSOR_ATTR_IN(8),
1583         SENSOR_ATTR_IN(9),
1584         SENSOR_ATTR_IN(10),
1585         SENSOR_ATTR_IN(11),
1586         SENSOR_ATTR_IN(12),
1587         SENSOR_ATTR_IN(13),
1588         SENSOR_ATTR_IN(14),
1589         SENSOR_ATTR_IN(15),
1590         SENSOR_ATTR_IN(16),
1591         SENSOR_ATTR_IN(17),
1592         SENSOR_ATTR_IN(18),
1593         SENSOR_ATTR_IN(19),
1594         SENSOR_ATTR_IN(20),
1595 };
1596
1597 static struct sensor_device_attribute_2 w83795_fan[] = {
1598         SENSOR_ATTR_FAN(1),
1599         SENSOR_ATTR_FAN(2),
1600         SENSOR_ATTR_FAN(3),
1601         SENSOR_ATTR_FAN(4),
1602         SENSOR_ATTR_FAN(5),
1603         SENSOR_ATTR_FAN(6),
1604         SENSOR_ATTR_FAN(7),
1605         SENSOR_ATTR_FAN(8),
1606         SENSOR_ATTR_FAN(9),
1607         SENSOR_ATTR_FAN(10),
1608         SENSOR_ATTR_FAN(11),
1609         SENSOR_ATTR_FAN(12),
1610         SENSOR_ATTR_FAN(13),
1611         SENSOR_ATTR_FAN(14),
1612 };
1613
1614 static struct sensor_device_attribute_2 w83795_temp[] = {
1615         SENSOR_ATTR_TEMP(1),
1616         SENSOR_ATTR_TEMP(2),
1617         SENSOR_ATTR_TEMP(3),
1618         SENSOR_ATTR_TEMP(4),
1619         SENSOR_ATTR_TEMP(5),
1620         SENSOR_ATTR_TEMP(6),
1621 };
1622
1623 static struct sensor_device_attribute_2 w83795_dts[] = {
1624         SENSOR_ATTR_DTS(7),
1625         SENSOR_ATTR_DTS(8),
1626         SENSOR_ATTR_DTS(9),
1627         SENSOR_ATTR_DTS(10),
1628         SENSOR_ATTR_DTS(11),
1629         SENSOR_ATTR_DTS(12),
1630         SENSOR_ATTR_DTS(13),
1631         SENSOR_ATTR_DTS(14),
1632 };
1633
1634 static struct sensor_device_attribute_2 w83795_static[] = {
1635         SENSOR_ATTR_FANIN_TARGET(1),
1636         SENSOR_ATTR_FANIN_TARGET(2),
1637         SENSOR_ATTR_FANIN_TARGET(3),
1638         SENSOR_ATTR_FANIN_TARGET(4),
1639         SENSOR_ATTR_FANIN_TARGET(5),
1640         SENSOR_ATTR_FANIN_TARGET(6),
1641         SENSOR_ATTR_FANIN_TARGET(7),
1642         SENSOR_ATTR_FANIN_TARGET(8),
1643         SENSOR_ATTR_PWM(1),
1644         SENSOR_ATTR_PWM(2),
1645 };
1646
1647 /* all registers existed in 795g than 795adg,
1648  * like PWM3 - PWM8 */
1649 static struct sensor_device_attribute_2 w83795_left_reg[] = {
1650         SENSOR_ATTR_PWM(3),
1651         SENSOR_ATTR_PWM(4),
1652         SENSOR_ATTR_PWM(5),
1653         SENSOR_ATTR_PWM(6),
1654         SENSOR_ATTR_PWM(7),
1655         SENSOR_ATTR_PWM(8),
1656 };
1657
1658 static struct sensor_device_attribute_2 sda_single_files[] = {
1659         SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep,
1660                       store_chassis_clear, ALARM_STATUS, 46),
1661         SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_beep_enable,
1662                       store_beep_enable, NOT_USED, NOT_USED),
1663         SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1664                 store_fanin, FANIN_TOL, NOT_USED),
1665         SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1666                       store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1667         SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1668                       store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1669         SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1670                       store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1671 };
1672
1673 /*
1674  * Driver interface
1675  */
1676
1677 static void w83795_init_client(struct i2c_client *client)
1678 {
1679         if (reset)
1680                 w83795_write(client, W83795_REG_CONFIG, 0x80);
1681
1682         /* Start monitoring */
1683         w83795_write(client, W83795_REG_CONFIG,
1684                      w83795_read(client, W83795_REG_CONFIG) | 0x01);
1685 }
1686
1687 /* Return 0 if detection is successful, -ENODEV otherwise */
1688 static int w83795_detect(struct i2c_client *client,
1689                          struct i2c_board_info *info)
1690 {
1691         u8 tmp, bank;
1692         struct i2c_adapter *adapter = client->adapter;
1693         unsigned short address = client->addr;
1694
1695         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1696                 return -ENODEV;
1697         bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1698
1699         tmp = bank & 0x80 ? 0x5c : 0xa3;
1700         /* Check Nuvoton vendor ID */
1701         if (tmp != i2c_smbus_read_byte_data(client,
1702                                                 W83795_REG_VENDORID)) {
1703                 pr_debug("w83795: Detection failed at check "
1704                          "vendor id\n");
1705                 return -ENODEV;
1706         }
1707
1708         /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1709            should match */
1710         if ((bank & 0x07) == 0
1711          && (i2c_smbus_read_byte_data(client, W83795_REG_I2C_ADDR) & 0x7f) !=
1712             address) {
1713                 pr_debug("w83795: Detection failed at check "
1714                          "i2c addr\n");
1715                 return -ENODEV;
1716         }
1717
1718         /* Determine the chip type now */
1719         if (0x79 != i2c_smbus_read_byte_data(client,
1720                                              W83795_REG_CHIPID)) {
1721                 pr_debug("w83795: Detection failed at check "
1722                          "chip id\n");
1723                 return -ENODEV;
1724         }
1725
1726 #if 0
1727         /* Check 795 chip type: 795G or 795ADG */
1728         if (W83795_REG_CONFIG_CONFIG48 &
1729                   w83795_read(client, W83795_REG_CONFIG)) {
1730                 data->chip_type = w83795adg;
1731         } else {
1732                 data->chip_type = w83795g;
1733         }
1734 #endif
1735
1736         /* Fill in the remaining client fields and put into the global list */
1737         strlcpy(info->type, "w83795", I2C_NAME_SIZE);
1738
1739         return 0;
1740 }
1741
1742 static int w83795_probe(struct i2c_client *client,
1743                         const struct i2c_device_id *id)
1744 {
1745         int i;
1746         u8 tmp;
1747         struct device *dev = &client->dev;
1748         struct w83795_data *data;
1749         int err = 0;
1750
1751         data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL);
1752         if (!data) {
1753                 err = -ENOMEM;
1754                 goto exit;
1755         }
1756
1757         i2c_set_clientdata(client, data);
1758         data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1759         mutex_init(&data->update_lock);
1760
1761         /* Initialize the chip */
1762         w83795_init_client(client);
1763
1764         /* Check 795 chip type: 795G or 795ADG */
1765         if (W83795_REG_CONFIG_CONFIG48 &
1766                   w83795_read(client, W83795_REG_CONFIG)) {
1767                 data->chip_type = w83795adg;
1768         } else {
1769                 data->chip_type = w83795g;
1770         }
1771
1772         data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1);
1773         data->has_in |= w83795_read(client, W83795_REG_VOLT_CTRL2) << 8;
1774         /* VSEN11-9 not for 795adg */
1775         if (data->chip_type == w83795adg)
1776                 data->has_in &= 0xf8ff;
1777         data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1);
1778         data->has_fan |= w83795_read(client, W83795_REG_FANIN_CTRL2) << 8;
1779
1780         /* VDSEN12-17 and TR1-6, TD1-4 use same register */
1781         tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
1782         if (tmp & 0x20)
1783                 data->enable_dts = 1;
1784         else
1785                 data->enable_dts = 0;
1786         data->has_temp = 0;
1787         data->temp_mode = 0;
1788         if (tmp & 0x08) {
1789                 if (tmp & 0x04)
1790                         data->has_temp |= 0x20;
1791                 else
1792                         data->has_in |= 0x10000;
1793         }
1794         if (tmp & 0x02) {
1795                 if (tmp & 0x01)
1796                         data->has_temp |= 0x10;
1797                 else
1798                         data->has_in |= 0x8000;
1799         }
1800         tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1801         if (tmp & 0x40) {
1802                 data->has_temp |= 0x08;
1803                 if (!(tmp & 0x80))
1804                         data->temp_mode |= 0x08;
1805         } else if (tmp & 0x80) {
1806                 data->has_in |= 0x100000;
1807         }
1808         if (tmp & 0x10) {
1809                 data->has_temp |= 0x04;
1810                 if (!(tmp & 0x20))
1811                         data->temp_mode |= 0x04;
1812         } else if (tmp & 0x20) {
1813                 data->has_in |= 0x80000;
1814         }
1815         if (tmp & 0x04) {
1816                 data->has_temp |= 0x02;
1817                 if (!(tmp & 0x08))
1818                         data->temp_mode |= 0x02;
1819         } else if (tmp & 0x08) {
1820                 data->has_in |= 0x40000;
1821         }
1822         if (tmp & 0x01) {
1823                 data->has_temp |= 0x01;
1824                 if (!(tmp & 0x02))
1825                         data->temp_mode |= 0x01;
1826         } else if (tmp & 0x02) {
1827                 data->has_in |= 0x20000;
1828         }
1829
1830         /* Check DTS enable status */
1831         if (data->enable_dts == 0) {
1832                 data->has_dts = 0;
1833         } else {
1834                 if (1 & w83795_read(client, W83795_REG_DTSC))
1835                         data->enable_dts |= 2;
1836                 data->has_dts = w83795_read(client, W83795_REG_DTSE);
1837         }
1838
1839         /* First update the voltages measured value and limits */
1840         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
1841                 if (!(data->has_in & (1 << i)))
1842                         continue;
1843                 data->in[i][IN_MAX] =
1844                         w83795_read(client, W83795_REG_IN[i][IN_MAX]);
1845                 data->in[i][IN_LOW] =
1846                         w83795_read(client, W83795_REG_IN[i][IN_LOW]);
1847                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
1848                 tmp |= (w83795_read(client, W83795_REG_VRLSB)
1849                         >> VRLSB_SHIFT) & 0x03;
1850                 data->in[i][IN_READ] = tmp;
1851         }
1852         for (i = 0; i < IN_LSB_REG_NUM; i++) {
1853                 data->in_lsb[i][IN_MAX] =
1854                         w83795_read(client, IN_LSB_REG(i, IN_MAX));
1855                 data->in_lsb[i][IN_LOW] =
1856                         w83795_read(client, IN_LSB_REG(i, IN_LOW));
1857         }
1858         data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
1859
1860         /* First update fan and limits */
1861         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
1862                 if (!(data->has_fan & (1 << i)))
1863                         continue;
1864                 data->fan_min[i] =
1865                         w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
1866                 data->fan_min[i] |=
1867                   (w83795_read(client, W83795_REG_FAN_MIN_LSB(i) >>
1868                         W83795_REG_FAN_MIN_LSB_SHIFT(i))) & 0x0F;
1869                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
1870                 data->fan[i] |=
1871                   (w83795_read(client, W83795_REG_VRLSB >> 4)) & 0x0F;
1872         }
1873
1874         /* temperature and limits */
1875         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
1876                 if (!(data->has_temp & (1 << i)))
1877                         continue;
1878                 data->temp[i][TEMP_CRIT] =
1879                         w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT]);
1880                 data->temp[i][TEMP_CRIT_HYST] =
1881                         w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT_HYST]);
1882                 data->temp[i][TEMP_WARN] =
1883                         w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN]);
1884                 data->temp[i][TEMP_WARN_HYST] =
1885                         w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN_HYST]);
1886                 data->temp[i][TEMP_READ] =
1887                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
1888                 data->temp_read_vrlsb[i] =
1889                         w83795_read(client, W83795_REG_VRLSB);
1890         }
1891
1892         /* dts temperature and limits */
1893         if (data->enable_dts != 0) {
1894                 data->dts_ext[DTS_CRIT] =
1895                         w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT));
1896                 data->dts_ext[DTS_CRIT_HYST] =
1897                         w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT_HYST));
1898                 data->dts_ext[DTS_WARN] =
1899                         w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN));
1900                 data->dts_ext[DTS_WARN_HYST] =
1901                         w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN_HYST));
1902                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
1903                         if (!(data->has_dts & (1 << i)))
1904                                 continue;
1905                         data->dts[i] = w83795_read(client, W83795_REG_DTS(i));
1906                         data->dts_read_vrlsb[i] =
1907                                 w83795_read(client, W83795_REG_VRLSB);
1908                 }
1909         }
1910
1911         /* First update temp source selction */
1912         for (i = 0; i < 3; i++)
1913                 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
1914
1915         /* pwm and smart fan */
1916         if (data->chip_type == w83795g)
1917                 data->has_pwm = 8;
1918         else
1919                 data->has_pwm = 2;
1920         data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
1921         data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
1922         /* w83795adg only support pwm2-0 */
1923         for (i = 0; i < W83795_REG_TEMP_NUM; i++)
1924                 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
1925         data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
1926         for (i = 0; i < data->has_pwm; i++) {
1927                 for (tmp = 0; tmp < 5; tmp++) {
1928                         data->pwm[i][tmp] =
1929                                 w83795_read(client, W83795_REG_PWM(i, tmp));
1930                 }
1931         }
1932         for (i = 0; i < 8; i++) {
1933                 data->target_speed[i] =
1934                         w83795_read(client, W83795_REG_FTSH(i)) << 4;
1935                 data->target_speed[i] |=
1936                         w83795_read(client, W83795_REG_FTSL(i)) >> 4;
1937         }
1938         data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
1939
1940         for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
1941                 data->pwm_temp[i][TEMP_PWM_TTTI] =
1942                         w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
1943                 data->pwm_temp[i][TEMP_PWM_CTFS] =
1944                         w83795_read(client, W83795_REG_CTFS(i));
1945                 tmp = w83795_read(client, W83795_REG_HT(i));
1946                 data->pwm_temp[i][TEMP_PWM_HCT] = (tmp >> 4) & 0x0f;
1947                 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
1948         }
1949         for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
1950                 for (tmp = 0; tmp < 7; tmp++) {
1951                         data->sf4_reg[i][SF4_TEMP][tmp] =
1952                                 w83795_read(client,
1953                                             W83795_REG_SF4_TEMP(i, tmp));
1954                         data->sf4_reg[i][SF4_PWM][tmp] =
1955                                 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
1956                 }
1957         }
1958
1959         /* Setup PWM Register */
1960         for (i = 0; i < 3; i++) {
1961                 data->setup_pwm[i] =
1962                         w83795_read(client, W83795_REG_SETUP_PWM(i));
1963         }
1964
1965         /* alarm and beep */
1966         for (i = 0; i < ALARM_BEEP_REG_NUM; i++) {
1967                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
1968                 data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i));
1969         }
1970         data->beep_enable =
1971                 (w83795_read(client, W83795_REG_BEEP(5)) >> 7) & 0x01;
1972
1973         /* Register sysfs hooks */
1974         for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
1975                 if (!(data->has_in & (1 << (i / 6))))
1976                         continue;
1977                 err = device_create_file(dev, &w83795_in[i].dev_attr);
1978                 if (err)
1979                         goto exit_remove;
1980         }
1981
1982         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
1983                 if (!(data->has_fan & (1 << (i / 5))))
1984                         continue;
1985                 err = device_create_file(dev, &w83795_fan[i].dev_attr);
1986                 if (err)
1987                         goto exit_remove;
1988         }
1989
1990         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1991                 err = device_create_file(dev, &sda_single_files[i].dev_attr);
1992                 if (err)
1993                         goto exit_remove;
1994         }
1995
1996         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
1997                 if (!(data->has_temp & (1 << (i / 29))))
1998                         continue;
1999                 err = device_create_file(dev, &w83795_temp[i].dev_attr);
2000                 if (err)
2001                         goto exit_remove;
2002         }
2003
2004         if (data->enable_dts != 0) {
2005                 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
2006                         if (!(data->has_dts & (1 << (i / 8))))
2007                                 continue;
2008                         err = device_create_file(dev, &w83795_dts[i].dev_attr);
2009                         if (err)
2010                                 goto exit_remove;
2011                 }
2012         }
2013
2014         if (data->chip_type == w83795g) {
2015                 for (i = 0; i < ARRAY_SIZE(w83795_left_reg); i++) {
2016                         err = device_create_file(dev,
2017                                                  &w83795_left_reg[i].dev_attr);
2018                         if (err)
2019                                 goto exit_remove;
2020                 }
2021         }
2022
2023         for (i = 0; i < ARRAY_SIZE(w83795_static); i++) {
2024                 err = device_create_file(dev, &w83795_static[i].dev_attr);
2025                 if (err)
2026                         goto exit_remove;
2027         }
2028
2029         data->hwmon_dev = hwmon_device_register(dev);
2030         if (IS_ERR(data->hwmon_dev)) {
2031                 err = PTR_ERR(data->hwmon_dev);
2032                 goto exit_remove;
2033         }
2034
2035         return 0;
2036
2037         /* Unregister sysfs hooks */
2038 exit_remove:
2039         for (i = 0; i < ARRAY_SIZE(w83795_in); i++)
2040                 device_remove_file(dev, &w83795_in[i].dev_attr);
2041
2042         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++)
2043                 device_remove_file(dev, &w83795_fan[i].dev_attr);
2044
2045         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
2046                 device_remove_file(dev, &sda_single_files[i].dev_attr);
2047
2048         if (data->chip_type == w83795g) {
2049                 for (i = 0; i < ARRAY_SIZE(w83795_left_reg); i++)
2050                         device_remove_file(dev, &w83795_left_reg[i].dev_attr);
2051         }
2052
2053         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++)
2054                 device_remove_file(dev, &w83795_temp[i].dev_attr);
2055
2056         for (i = 0; i < ARRAY_SIZE(w83795_dts); i++)
2057                 device_remove_file(dev, &w83795_dts[i].dev_attr);
2058
2059         for (i = 0; i < ARRAY_SIZE(w83795_static); i++)
2060                 device_remove_file(dev, &w83795_static[i].dev_attr);
2061
2062         kfree(data);
2063 exit:
2064         return err;
2065 }
2066
2067 static int w83795_remove(struct i2c_client *client)
2068 {
2069         struct w83795_data *data = i2c_get_clientdata(client);
2070         struct device *dev = &client->dev;
2071         int i;
2072
2073         hwmon_device_unregister(data->hwmon_dev);
2074
2075         for (i = 0; i < ARRAY_SIZE(w83795_in); i++)
2076                 device_remove_file(dev, &w83795_in[i].dev_attr);
2077
2078         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++)
2079                 device_remove_file(dev, &w83795_fan[i].dev_attr);
2080
2081         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
2082                 device_remove_file(dev, &sda_single_files[i].dev_attr);
2083
2084         if (data->chip_type == w83795g) {
2085                 for (i = 0; i < ARRAY_SIZE(w83795_left_reg); i++)
2086                         device_remove_file(dev, &w83795_left_reg[i].dev_attr);
2087         }
2088
2089         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++)
2090                 device_remove_file(dev, &w83795_temp[i].dev_attr);
2091
2092         for (i = 0; i < ARRAY_SIZE(w83795_dts); i++)
2093                 device_remove_file(dev, &w83795_dts[i].dev_attr);
2094
2095         for (i = 0; i < ARRAY_SIZE(w83795_static); i++)
2096                 device_remove_file(dev, &w83795_static[i].dev_attr);
2097
2098         kfree(data);
2099
2100         return 0;
2101 }
2102
2103
2104 static const struct i2c_device_id w83795_id[] = {
2105         { "w83795", w83795 },
2106         { }
2107 };
2108 MODULE_DEVICE_TABLE(i2c, w83795_id);
2109
2110 static struct i2c_driver w83795_driver = {
2111         .driver = {
2112                    .name = "w83795",
2113         },
2114         .probe          = w83795_probe,
2115         .remove         = w83795_remove,
2116         .id_table       = w83795_id,
2117
2118         .class          = I2C_CLASS_HWMON,
2119         .detect         = w83795_detect,
2120         .address_list   = normal_i2c,
2121 };
2122
2123 static int __init sensors_w83795_init(void)
2124 {
2125         return i2c_add_driver(&w83795_driver);
2126 }
2127
2128 static void __exit sensors_w83795_exit(void)
2129 {
2130         i2c_del_driver(&w83795_driver);
2131 }
2132
2133 MODULE_AUTHOR("Wei Song");
2134 MODULE_DESCRIPTION("w83795 driver");
2135 MODULE_LICENSE("GPL");
2136
2137 module_init(sensors_w83795_init);
2138 module_exit(sensors_w83795_exit);