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
 187 #define W83795_REG_VID_CTRL             0x6A
 188
 189 #define ALARM_BEEP_REG_NUM              6
 190 #define W83795_REG_ALARM(index)         (0x41 + (index))
 191 #define W83795_REG_BEEP(index)          (0x50 + (index))
 192
 193 #define W83795_REG_CLR_CHASSIS          0x4D
 194
 195
 196 #define W83795_REG_TEMP_NUM             6
 197 #define W83795_REG_FCMS1                0x201
 198 #define W83795_REG_FCMS2                0x208
 199 #define W83795_REG_TFMR(index)          (0x202 + (index))
 200 #define W83795_REG_FOMC                 0x20F
 201 #define W83795_REG_FOPFP(index)         (0x218 + (index))
 202
 203 #define W83795_REG_TSS(index)           (0x209 + (index))
 204
 205 #define PWM_OUTPUT                      0
 206 #define PWM_START                       1
 207 #define PWM_NONSTOP                     2
 208 #define PWM_STOP_TIME                   3
 209 #define PWM_DIV                         4
 210 #define W83795_REG_PWM(index, nr) \
 211         (((nr) == 0 ? 0x210 : \
 212           (nr) == 1 ? 0x220 : \
 213           (nr) == 2 ? 0x228 : \
 214           (nr) == 3 ? 0x230 : 0x218) + (index))
 215
 216 #define W83795_REG_FOPFP_DIV(index) \
 217         (((index) < 8) ? ((index) + 1) : \
 218          ((index) == 8) ? 12 : \
 219          (16 << ((index) - 9)))
 220
 221 #define W83795_REG_FTSH(index)          (0x240 + (index) * 2)
 222 #define W83795_REG_FTSL(index)          (0x241 + (index) * 2)
 223 #define W83795_REG_TFTS                 0x250
 224
 225 #define TEMP_PWM_TTTI                   0
 226 #define TEMP_PWM_CTFS                   1
 227 #define TEMP_PWM_HCT                    2
 228 #define TEMP_PWM_HOT                    3
 229 #define W83795_REG_TTTI(index)          (0x260 + (index))
 230 #define W83795_REG_CTFS(index)          (0x268 + (index))
 231 #define W83795_REG_HT(index)            (0x270 + (index))
 232
 233 #define SF4_TEMP                        0
 234 #define SF4_PWM                         1
 235 #define W83795_REG_SF4_TEMP(temp_num, index) \
 236         (0x280 + 0x10 * (temp_num) + (index))
 237 #define W83795_REG_SF4_PWM(temp_num, index) \
 238         (0x288 + 0x10 * (temp_num) + (index))
 239
 240 #define W83795_REG_DTSC                 0x301
 241 #define W83795_REG_DTSE                 0x302
 242 #define W83795_REG_DTS(index)           (0x26 + (index))
 243
 244 #define DTS_CRIT                        0
 245 #define DTS_CRIT_HYST                   1
 246 #define DTS_WARN                        2
 247 #define DTS_WARN_HYST                   3
 248 #define W83795_REG_DTS_EXT(index)       (0xB2 + (index))
 249
 250 #define SETUP_PWM_DEFAULT               0
 251 #define SETUP_PWM_UPTIME                1
 252 #define SETUP_PWM_DOWNTIME              2
 253 #define W83795_REG_SETUP_PWM(index)    (0x20C + (index))
 254
 255 static inline u16 in_from_reg(u8 index, u16 val)
 256 {
 257         if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END))
 258                 return val * 6;
 259         else
 260                 return val * 2;
 261 }
 262
 263 static inline u16 in_to_reg(u8 index, u16 val)
 264 {
 265         if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END))
 266                 return val / 6;
 267         else
 268                 return val / 2;
 269 }
 270
 271 static inline unsigned long fan_from_reg(u16 val)
 272 {
 273         if ((val >= 0xff0) || (val == 0))
 274                 return 0;
 275         return 1350000UL / val;
 276 }
 277
 278 static inline u16 fan_to_reg(long rpm)
 279 {
 280         if (rpm <= 0)
 281                 return 0x0fff;
 282         return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
 283 }
 284
 285 static inline unsigned long time_from_reg(u8 reg)
 286 {
 287         return reg * 100;
 288 }
 289
 290 static inline u8 time_to_reg(unsigned long val)
 291 {
 292         return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
 293 }
 294
 295 static inline long temp_from_reg(s8 reg)
 296 {
 297         return reg * 1000;
 298 }
 299
 300 static inline s8 temp_to_reg(long val, s8 min, s8 max)
 301 {
 302         return SENSORS_LIMIT((val < 0 ? -val : val) / 1000, min, max);
 303 }
 304
 305
 306 enum chip_types {w83795g, w83795adg};
 307
 308 struct w83795_data {
 309         struct device *hwmon_dev;
 310         struct mutex update_lock;
 311         unsigned long last_updated;     /* In jiffies */
 312         enum chip_types chip_type;
 313
 314         u8 bank;
 315
 316         u32 has_in;             /* Enable monitor VIN or not */
 317         u16 in[21][3];          /* Register value, read/high/low */
 318         u8 in_lsb[10][3];       /* LSB Register value, high/low */
 319         u8 has_gain;            /* has gain: in17-20 * 8 */
 320
 321         u16 has_fan;            /* Enable fan14-1 or not */
 322         u16 fan[14];            /* Register value combine */
 323         u16 fan_min[14];        /* Register value combine */
 324
 325         u8 has_temp;            /* Enable monitor temp6-1 or not */
 326         u8 temp[6][5];          /* current, crit, crit_hyst, warn, warn_hyst */
 327         u8 temp_read_vrlsb[6];
 328         u8 temp_mode;           /* bit 0: TR mode, bit 1: TD mode */
 329         u8 temp_src[3];         /* Register value */
 330
 331         u8 enable_dts;          /* Enable PECI and SB-TSI,
 332                                  * bit 0: =1 enable, =0 disable,
 333                                  * bit 1: =1 AMD SB-TSI, =0 Intel PECI */
 334         u8 has_dts;             /* Enable monitor DTS temp */
 335         u8 dts[8];              /* Register value */
 336         u8 dts_read_vrlsb[8];   /* Register value */
 337         u8 dts_ext[4];          /* Register value */
 338
 339         u8 has_pwm;             /* 795g supports 8 pwm, 795adg only supports 2,
 340                                  * no config register, only affected by chip
 341                                  * type */
 342         u8 pwm[8][5];           /* Register value, output, start, non stop, stop
 343                                  * time, div */
 344         u8 pwm_fcms[2];         /* Register value */
 345         u8 pwm_tfmr[6];         /* Register value */
 346         u8 pwm_fomc;            /* Register value */
 347
 348         u16 target_speed[8];    /* Register value, target speed for speed
 349                                  * cruise */
 350         u8 tol_speed;           /* tolerance of target speed */
 351         u8 pwm_temp[6][4];      /* TTTI, CTFS, HCT, HOT */
 352         u8 sf4_reg[6][2][7];    /* 6 temp, temp/dcpwm, 7 registers */
 353
 354         u8 setup_pwm[3];        /* Register value */
 355
 356         u8 alarms[6];           /* Register value */
 357         u8 beeps[6];            /* Register value */
 358         u8 beep_enable;
 359
 360         char valid;
 361 };
 362
 363 /*
 364  * Hardware access
 365  */
 366
 367 /* Ignore the possibility that somebody change bank outside the driver
 368  * Must be called with data->update_lock held, except during initialization */
 369 static u8 w83795_read(struct i2c_client *client, u16 reg)
 370 {
 371         struct w83795_data *data = i2c_get_clientdata(client);
 372         u8 res = 0xff;
 373         u8 new_bank = reg >> 8;
 374
 375         new_bank |= data->bank & 0xfc;
 376         if (data->bank != new_bank) {
 377                 if (i2c_smbus_write_byte_data
 378                     (client, W83795_REG_BANKSEL, new_bank) >= 0)
 379                         data->bank = new_bank;
 380                 else {
 381                         dev_err(&client->dev,
 382                                 "set bank to %d failed, fall back "
 383                                 "to bank %d, read reg 0x%x error\n",
 384                                 new_bank, data->bank, reg);
 385                         res = 0x0;      /* read 0x0 from the chip */
 386                         goto END;
 387                 }
 388         }
 389         res = i2c_smbus_read_byte_data(client, reg & 0xff);
 390 END:
 391         return res;
 392 }
 393
 394 /* Must be called with data->update_lock held, except during initialization */
 395 static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
 396 {
 397         struct w83795_data *data = i2c_get_clientdata(client);
 398         int res;
 399         u8 new_bank = reg >> 8;
 400
 401         new_bank |= data->bank & 0xfc;
 402         if (data->bank != new_bank) {
 403                 res = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
 404                                                 new_bank);
 405                 if (res >= 0)
 406                         data->bank = new_bank;
 407                 else {
 408                         dev_err(&client->dev,
 409                                 "set bank to %d failed, fall back "
 410                                 "to bank %d, write reg 0x%x error\n",
 411                                 new_bank, data->bank, reg);
 412                         goto END;
 413                 }
 414         }
 415
 416         res = i2c_smbus_write_byte_data(client, reg & 0xff, value);
 417 END:
 418         return res;
 419 }
 420
 421 static struct w83795_data *w83795_update_device(struct device *dev)
 422 {
 423         struct i2c_client *client = to_i2c_client(dev);
 424         struct w83795_data *data = i2c_get_clientdata(client);
 425         u16 tmp;
 426         int i;
 427
 428         mutex_lock(&data->update_lock);
 429
 430         if (!(time_after(jiffies, data->last_updated + HZ * 2)
 431               || !data->valid))
 432                 goto END;
 433
 434         /* Update the voltages value */
 435         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
 436                 if (!(data->has_in & (1 << i)))
 437                         continue;
 438                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
 439                 tmp |= (w83795_read(client, W83795_REG_VRLSB)
 440                         >> VRLSB_SHIFT) & 0x03;
 441                 data->in[i][IN_READ] = tmp;
 442         }
 443
 444         /* Update fan */
 445         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
 446                 if (!(data->has_fan & (1 << i)))
 447                         continue;
 448                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
 449                 data->fan[i] |=
 450                   (w83795_read(client, W83795_REG_VRLSB >> 4)) & 0x0F;
 451         }
 452
 453         /* Update temperature */
 454         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
 455                 /* even stop monitor, register still keep value, just read out
 456                  * it */
 457                 if (!(data->has_temp & (1 << i))) {
 458                         data->temp[i][TEMP_READ] = 0;
 459                         data->temp_read_vrlsb[i] = 0;
 460                         continue;
 461                 }
 462                 data->temp[i][TEMP_READ] =
 463                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
 464                 data->temp_read_vrlsb[i] =
 465                         w83795_read(client, W83795_REG_VRLSB);
 466         }
 467
 468         /* Update dts temperature */
 469         if (data->enable_dts != 0) {
 470                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
 471                         if (!(data->has_dts & (1 << i)))
 472                                 continue;
 473                         data->dts[i] =
 474                                 w83795_read(client, W83795_REG_DTS(i));
 475                         data->dts_read_vrlsb[i] =
 476                                 w83795_read(client, W83795_REG_VRLSB);
 477                 }
 478         }
 479
 480         /* Update pwm output */
 481         for (i = 0; i < data->has_pwm; i++) {
 482                 data->pwm[i][PWM_OUTPUT] =
 483                     w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
 484         }
 485
 486         /* update alarm */
 487         for (i = 0; i < ALARM_BEEP_REG_NUM; i++)
 488                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
 489
 490         data->last_updated = jiffies;
 491         data->valid = 1;
 492
 493 END:
 494         mutex_unlock(&data->update_lock);
 495         return data;
 496 }
 497
 498 /*
 499  * Sysfs attributes
 500  */
 501
 502 #define ALARM_STATUS      0
 503 #define BEEP_ENABLE       1
 504 static ssize_t
 505 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
 506 {
 507         struct w83795_data *data = w83795_update_device(dev);
 508         struct sensor_device_attribute_2 *sensor_attr =
 509             to_sensor_dev_attr_2(attr);
 510         int nr = sensor_attr->nr;
 511         int index = sensor_attr->index >> 3;
 512         int bit = sensor_attr->index & 0x07;
 513         u8 val;
 514
 515         if (ALARM_STATUS == nr) {
 516                 val = (data->alarms[index] >> (bit)) & 1;
 517         } else {                /* BEEP_ENABLE */
 518                 val = (data->beeps[index] >> (bit)) & 1;
 519         }
 520
 521         return sprintf(buf, "%u\n", val);
 522 }
 523
 524 static ssize_t
 525 store_beep(struct device *dev, struct device_attribute *attr,
 526            const char *buf, size_t count)
 527 {
 528         struct i2c_client *client = to_i2c_client(dev);
 529         struct w83795_data *data = i2c_get_clientdata(client);
 530         struct sensor_device_attribute_2 *sensor_attr =
 531             to_sensor_dev_attr_2(attr);
 532         int index = sensor_attr->index >> 3;
 533         int shift = sensor_attr->index & 0x07;
 534         u8 beep_bit = 1 << shift;
 535         unsigned long val;
 536
 537         if (strict_strtoul(buf, 10, &val) < 0)
 538                 return -EINVAL;
 539         if (val != 0 && val != 1)
 540                 return -EINVAL;
 541
 542         mutex_lock(&data->update_lock);
 543         data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
 544         data->beeps[index] &= ~beep_bit;
 545         data->beeps[index] |= val << shift;
 546         w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
 547         mutex_unlock(&data->update_lock);
 548
 549         return count;
 550 }
 551
 552 static ssize_t
 553 show_beep_enable(struct device *dev, struct device_attribute *attr, char *buf)
 554 {
 555         struct i2c_client *client = to_i2c_client(dev);
 556         struct w83795_data *data = i2c_get_clientdata(client);
 557         return sprintf(buf, "%u\n", data->beep_enable);
 558 }
 559
 560 static ssize_t
 561 store_beep_enable(struct device *dev, struct device_attribute *attr,
 562                   const char *buf, size_t count)
 563 {
 564         struct i2c_client *client = to_i2c_client(dev);
 565         struct w83795_data *data = i2c_get_clientdata(client);
 566         unsigned long val;
 567         u8 tmp;
 568
 569         if (strict_strtoul(buf, 10, &val) < 0)
 570                 return -EINVAL;
 571         if (val != 0 && val != 1)
 572                 return -EINVAL;
 573
 574         mutex_lock(&data->update_lock);
 575         data->beep_enable = val;
 576         tmp = w83795_read(client, W83795_REG_BEEP(5));
 577         tmp &= 0x7f;
 578         tmp |= val << 7;
 579         w83795_write(client, W83795_REG_BEEP(5), tmp);
 580         mutex_unlock(&data->update_lock);
 581
 582         return count;
 583 }
 584
 585 /* Write any value to clear chassis alarm */
 586 static ssize_t
 587 store_chassis_clear(struct device *dev,
 588                     struct device_attribute *attr, const char *buf,
 589                     size_t count)
 590 {
 591         struct i2c_client *client = to_i2c_client(dev);
 592         struct w83795_data *data = i2c_get_clientdata(client);
 593         u8 val;
 594
 595         mutex_lock(&data->update_lock);
 596         val = w83795_read(client, W83795_REG_CLR_CHASSIS);
 597         val |= 0x80;
 598         w83795_write(client, W83795_REG_CLR_CHASSIS, val);
 599         mutex_unlock(&data->update_lock);
 600         return count;
 601 }
 602
 603 #define FAN_INPUT     0
 604 #define FAN_MIN       1
 605 static ssize_t
 606 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
 607 {
 608         struct sensor_device_attribute_2 *sensor_attr =
 609             to_sensor_dev_attr_2(attr);
 610         int nr = sensor_attr->nr;
 611         int index = sensor_attr->index;
 612         struct w83795_data *data = w83795_update_device(dev);
 613         u16 val;
 614
 615         if (FAN_INPUT == nr)
 616                 val = data->fan[index] & 0x0fff;
 617         else
 618                 val = data->fan_min[index] & 0x0fff;
 619
 620         return sprintf(buf, "%lu\n", fan_from_reg(val));
 621 }
 622
 623 static ssize_t
 624 store_fan_min(struct device *dev, struct device_attribute *attr,
 625               const char *buf, size_t count)
 626 {
 627         struct sensor_device_attribute_2 *sensor_attr =
 628             to_sensor_dev_attr_2(attr);
 629         int index = sensor_attr->index;
 630         struct i2c_client *client = to_i2c_client(dev);
 631         struct w83795_data *data = i2c_get_clientdata(client);
 632         unsigned long val;
 633
 634         if (strict_strtoul(buf, 10, &val))
 635                 return -EINVAL;
 636         val = fan_to_reg(val);
 637
 638         mutex_lock(&data->update_lock);
 639         data->fan_min[index] = val;
 640         w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
 641         val &= 0x0f;
 642         if (index % 1) {
 643                 val <<= 4;
 644                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 645                        & 0x0f;
 646         } else {
 647                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 648                        & 0xf0;
 649         }
 650         w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
 651         mutex_unlock(&data->update_lock);
 652
 653         return count;
 654 }
 655
 656 static ssize_t
 657 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 658 {
 659         struct w83795_data *data = w83795_update_device(dev);
 660         struct sensor_device_attribute_2 *sensor_attr =
 661             to_sensor_dev_attr_2(attr);
 662         int nr = sensor_attr->nr;
 663         int index = sensor_attr->index;
 664         u16 val;
 665
 666         switch (nr) {
 667         case PWM_STOP_TIME:
 668                 val = time_from_reg(data->pwm[index][nr]);
 669                 break;
 670         case PWM_DIV:
 671                 val = W83795_REG_FOPFP_DIV(data->pwm[index][nr] & 0x0f);
 672                 break;
 673         default:
 674                 val = data->pwm[index][nr];
 675                 break;
 676         }
 677
 678         return sprintf(buf, "%u\n", val);
 679 }
 680
 681 static ssize_t
 682 store_pwm(struct device *dev, struct device_attribute *attr,
 683           const char *buf, size_t count)
 684 {
 685         struct i2c_client *client = to_i2c_client(dev);
 686         struct w83795_data *data = i2c_get_clientdata(client);
 687         struct sensor_device_attribute_2 *sensor_attr =
 688             to_sensor_dev_attr_2(attr);
 689         int nr = sensor_attr->nr;
 690         int index = sensor_attr->index;
 691         unsigned long val;
 692         int i;
 693
 694         if (strict_strtoul(buf, 10, &val) < 0)
 695                 return -EINVAL;
 696
 697         mutex_lock(&data->update_lock);
 698         switch (nr) {
 699         case PWM_STOP_TIME:
 700                 val = time_to_reg(val);
 701                 break;
 702         case PWM_DIV:
 703                 for (i = 0; i < 16; i++) {
 704                         if (W83795_REG_FOPFP_DIV(i) == val) {
 705                                 val = i;
 706                                 break;
 707                         }
 708                 }
 709                 if (i >= 16)
 710                         goto err_end;
 711                 val |= w83795_read(client, W83795_REG_PWM(index, nr)) & 0x80;
 712                 break;
 713         default:
 714                 val = SENSORS_LIMIT(val, 0, 0xff);
 715                 break;
 716         }
 717         w83795_write(client, W83795_REG_PWM(index, nr), val);
 718         data->pwm[index][nr] = val & 0xff;
 719         mutex_unlock(&data->update_lock);
 720         return count;
 721 err_end:
 722         mutex_unlock(&data->update_lock);
 723         return -EINVAL;
 724 }
 725
 726 static ssize_t
 727 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
 728 {
 729         struct sensor_device_attribute_2 *sensor_attr =
 730             to_sensor_dev_attr_2(attr);
 731         struct i2c_client *client = to_i2c_client(dev);
 732         struct w83795_data *data = i2c_get_clientdata(client);
 733         int index = sensor_attr->index;
 734         u8 tmp;
 735
 736         if (1 == (data->pwm_fcms[0] & (1 << index))) {
 737                 tmp = 2;
 738                 goto out;
 739         }
 740         for (tmp = 0; tmp < 6; tmp++) {
 741                 if (data->pwm_tfmr[tmp] & (1 << index)) {
 742                         tmp = 3;
 743                         goto out;
 744                 }
 745         }
 746         if (data->pwm_fomc & (1 << index))
 747                 tmp = 0;
 748         else
 749                 tmp = 1;
 750
 751 out:
 752         return sprintf(buf, "%u\n", tmp);
 753 }
 754
 755 static ssize_t
 756 store_pwm_enable(struct device *dev, struct device_attribute *attr,
 757           const char *buf, size_t count)
 758 {
 759         struct i2c_client *client = to_i2c_client(dev);
 760         struct w83795_data *data = i2c_get_clientdata(client);
 761         struct sensor_device_attribute_2 *sensor_attr =
 762             to_sensor_dev_attr_2(attr);
 763         int index = sensor_attr->index;
 764         unsigned long val;
 765         int i;
 766
 767         if (strict_strtoul(buf, 10, &val) < 0)
 768                 return -EINVAL;
 769         if (val > 2)
 770                 return -EINVAL;
 771
 772         mutex_lock(&data->update_lock);
 773         switch (val) {
 774         case 0:
 775         case 1:
 776                 data->pwm_fcms[0] &= ~(1 << index);
 777                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 778                 for (i = 0; i < 6; i++) {
 779                         data->pwm_tfmr[i] &= ~(1 << index);
 780                         w83795_write(client, W83795_REG_TFMR(i),
 781                                 data->pwm_tfmr[i]);
 782                 }
 783                 data->pwm_fomc |= 1 << index;
 784                 data->pwm_fomc ^= val << index;
 785                 w83795_write(client, W83795_REG_FOMC, data->pwm_fomc);
 786                 break;
 787         case 2:
 788                 data->pwm_fcms[0] |= (1 << index);
 789                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 790                 break;
 791         }
 792         mutex_unlock(&data->update_lock);
 793         return count;
 794 }
 795
 796 static ssize_t
 797 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
 798 {
 799         struct sensor_device_attribute_2 *sensor_attr =
 800             to_sensor_dev_attr_2(attr);
 801         struct i2c_client *client = to_i2c_client(dev);
 802         struct w83795_data *data = i2c_get_clientdata(client);
 803         int index = sensor_attr->index;
 804         u8 val = index / 2;
 805         u8 tmp = data->temp_src[val];
 806
 807         if (index % 1)
 808                 val = 4;
 809         else
 810                 val = 0;
 811         tmp >>= val;
 812         tmp &= 0x0f;
 813
 814         return sprintf(buf, "%u\n", tmp);
 815 }
 816
 817 static ssize_t
 818 store_temp_src(struct device *dev, struct device_attribute *attr,
 819           const char *buf, size_t count)
 820 {
 821         struct i2c_client *client = to_i2c_client(dev);
 822         struct w83795_data *data = i2c_get_clientdata(client);
 823         struct sensor_device_attribute_2 *sensor_attr =
 824             to_sensor_dev_attr_2(attr);
 825         int index = sensor_attr->index;
 826         unsigned long tmp;
 827         u8 val = index / 2;
 828
 829         if (strict_strtoul(buf, 10, &tmp) < 0)
 830                 return -EINVAL;
 831         tmp = SENSORS_LIMIT(tmp, 0, 15);
 832
 833         mutex_lock(&data->update_lock);
 834         if (index % 1) {
 835                 tmp <<= 4;
 836                 data->temp_src[val] &= 0x0f;
 837         } else {
 838                 data->temp_src[val] &= 0xf0;
 839         }
 840         data->temp_src[val] |= tmp;
 841         w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
 842         mutex_unlock(&data->update_lock);
 843
 844         return count;
 845 }
 846
 847 #define TEMP_PWM_ENABLE   0
 848 #define TEMP_PWM_FAN_MAP  1
 849 static ssize_t
 850 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 851                      char *buf)
 852 {
 853         struct i2c_client *client = to_i2c_client(dev);
 854         struct w83795_data *data = i2c_get_clientdata(client);
 855         struct sensor_device_attribute_2 *sensor_attr =
 856             to_sensor_dev_attr_2(attr);
 857         int nr = sensor_attr->nr;
 858         int index = sensor_attr->index;
 859         u8 tmp = 0xff;
 860
 861         switch (nr) {
 862         case TEMP_PWM_ENABLE:
 863                 tmp = (data->pwm_fcms[1] >> index) & 1;
 864                 if (tmp)
 865                         tmp = 4;
 866                 else
 867                         tmp = 3;
 868                 break;
 869         case TEMP_PWM_FAN_MAP:
 870                 tmp = data->pwm_tfmr[index];
 871                 break;
 872         }
 873
 874         return sprintf(buf, "%u\n", tmp);
 875 }
 876
 877 static ssize_t
 878 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 879           const char *buf, size_t count)
 880 {
 881         struct i2c_client *client = to_i2c_client(dev);
 882         struct w83795_data *data = i2c_get_clientdata(client);
 883         struct sensor_device_attribute_2 *sensor_attr =
 884             to_sensor_dev_attr_2(attr);
 885         int nr = sensor_attr->nr;
 886         int index = sensor_attr->index;
 887         unsigned long tmp;
 888
 889         if (strict_strtoul(buf, 10, &tmp) < 0)
 890                 return -EINVAL;
 891
 892         switch (nr) {
 893         case TEMP_PWM_ENABLE:
 894                 if ((tmp != 3) && (tmp != 4))
 895                         return -EINVAL;
 896                 tmp -= 3;
 897                 mutex_lock(&data->update_lock);
 898                 data->pwm_fcms[1] &= ~(1 << index);
 899                 data->pwm_fcms[1] |= tmp << index;
 900                 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
 901                 mutex_unlock(&data->update_lock);
 902                 break;
 903         case TEMP_PWM_FAN_MAP:
 904                 mutex_lock(&data->update_lock);
 905                 tmp = SENSORS_LIMIT(tmp, 0, 0xff);
 906                 w83795_write(client, W83795_REG_TFMR(index), tmp);
 907                 data->pwm_tfmr[index] = tmp;
 908                 mutex_unlock(&data->update_lock);
 909                 break;
 910         }
 911         return count;
 912 }
 913
 914 #define FANIN_TARGET   0
 915 #define FANIN_TOL      1
 916 static ssize_t
 917 show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
 918 {
 919         struct i2c_client *client = to_i2c_client(dev);
 920         struct w83795_data *data = i2c_get_clientdata(client);
 921         struct sensor_device_attribute_2 *sensor_attr =
 922             to_sensor_dev_attr_2(attr);
 923         int nr = sensor_attr->nr;
 924         int index = sensor_attr->index;
 925         u16 tmp = 0;
 926
 927         switch (nr) {
 928         case FANIN_TARGET:
 929                 tmp = fan_from_reg(data->target_speed[index]);
 930                 break;
 931         case FANIN_TOL:
 932                 tmp = data->tol_speed;
 933                 break;
 934         }
 935
 936         return sprintf(buf, "%u\n", tmp);
 937 }
 938
 939 static ssize_t
 940 store_fanin(struct device *dev, struct device_attribute *attr,
 941           const char *buf, size_t count)
 942 {
 943         struct i2c_client *client = to_i2c_client(dev);
 944         struct w83795_data *data = i2c_get_clientdata(client);
 945         struct sensor_device_attribute_2 *sensor_attr =
 946             to_sensor_dev_attr_2(attr);
 947         int nr = sensor_attr->nr;
 948         int index = sensor_attr->index;
 949         unsigned long val;
 950
 951         if (strict_strtoul(buf, 10, &val) < 0)
 952                 return -EINVAL;
 953
 954         mutex_lock(&data->update_lock);
 955         switch (nr) {
 956         case FANIN_TARGET:
 957                 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff));
 958                 w83795_write(client, W83795_REG_FTSH(index), (val >> 4) & 0xff);
 959                 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
 960                 data->target_speed[index] = val;
 961                 break;
 962         case FANIN_TOL:
 963                 val = SENSORS_LIMIT(val, 0, 0x3f);
 964                 w83795_write(client, W83795_REG_TFTS, val);
 965                 data->tol_speed = val;
 966                 break;
 967         }
 968         mutex_unlock(&data->update_lock);
 969
 970         return count;
 971 }
 972
 973
 974 static ssize_t
 975 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 976 {
 977         struct i2c_client *client = to_i2c_client(dev);
 978         struct w83795_data *data = i2c_get_clientdata(client);
 979         struct sensor_device_attribute_2 *sensor_attr =
 980             to_sensor_dev_attr_2(attr);
 981         int nr = sensor_attr->nr;
 982         int index = sensor_attr->index;
 983         long tmp = temp_from_reg(data->pwm_temp[index][nr]);
 984
 985         return sprintf(buf, "%ld\n", tmp);
 986 }
 987
 988 static ssize_t
 989 store_temp_pwm(struct device *dev, struct device_attribute *attr,
 990           const char *buf, size_t count)
 991 {
 992         struct i2c_client *client = to_i2c_client(dev);
 993         struct w83795_data *data = i2c_get_clientdata(client);
 994         struct sensor_device_attribute_2 *sensor_attr =
 995             to_sensor_dev_attr_2(attr);
 996         int nr = sensor_attr->nr;
 997         int index = sensor_attr->index;
 998         unsigned long val;
 999         u8 tmp;
1000
1001         if (strict_strtoul(buf, 10, &val) < 0)
1002                 return -EINVAL;
1003         val /= 1000;
1004
1005         mutex_lock(&data->update_lock);
1006         switch (nr) {
1007         case TEMP_PWM_TTTI:
1008                 val = SENSORS_LIMIT(val, 0, 0x7f);
1009                 w83795_write(client, W83795_REG_TTTI(index), val);
1010                 break;
1011         case TEMP_PWM_CTFS:
1012                 val = SENSORS_LIMIT(val, 0, 0x7f);
1013                 w83795_write(client, W83795_REG_CTFS(index), val);
1014                 break;
1015         case TEMP_PWM_HCT:
1016                 val = SENSORS_LIMIT(val, 0, 0x0f);
1017                 tmp = w83795_read(client, W83795_REG_HT(index));
1018                 tmp &= 0x0f;
1019                 tmp |= (val << 4) & 0xf0;
1020                 w83795_write(client, W83795_REG_HT(index), tmp);
1021                 break;
1022         case TEMP_PWM_HOT:
1023                 val = SENSORS_LIMIT(val, 0, 0x0f);
1024                 tmp = w83795_read(client, W83795_REG_HT(index));
1025                 tmp &= 0xf0;
1026                 tmp |= val & 0x0f;
1027                 w83795_write(client, W83795_REG_HT(index), tmp);
1028                 break;
1029         }
1030         data->pwm_temp[index][nr] = val;
1031         mutex_unlock(&data->update_lock);
1032
1033         return count;
1034 }
1035
1036 static ssize_t
1037 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1038 {
1039         struct i2c_client *client = to_i2c_client(dev);
1040         struct w83795_data *data = i2c_get_clientdata(client);
1041         struct sensor_device_attribute_2 *sensor_attr =
1042             to_sensor_dev_attr_2(attr);
1043         int nr = sensor_attr->nr;
1044         int index = sensor_attr->index;
1045
1046         return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1047 }
1048
1049 static ssize_t
1050 store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1051           const char *buf, size_t count)
1052 {
1053         struct i2c_client *client = to_i2c_client(dev);
1054         struct w83795_data *data = i2c_get_clientdata(client);
1055         struct sensor_device_attribute_2 *sensor_attr =
1056             to_sensor_dev_attr_2(attr);
1057         int nr = sensor_attr->nr;
1058         int index = sensor_attr->index;
1059         unsigned long val;
1060
1061         if (strict_strtoul(buf, 10, &val) < 0)
1062                 return -EINVAL;
1063
1064         mutex_lock(&data->update_lock);
1065         w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1066         data->sf4_reg[index][SF4_PWM][nr] = val;
1067         mutex_unlock(&data->update_lock);
1068
1069         return count;
1070 }
1071
1072 static ssize_t
1073 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1074 {
1075         struct i2c_client *client = to_i2c_client(dev);
1076         struct w83795_data *data = i2c_get_clientdata(client);
1077         struct sensor_device_attribute_2 *sensor_attr =
1078             to_sensor_dev_attr_2(attr);
1079         int nr = sensor_attr->nr;
1080         int index = sensor_attr->index;
1081
1082         return sprintf(buf, "%u\n",
1083                 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1084 }
1085
1086 static ssize_t
1087 store_sf4_temp(struct device *dev, struct device_attribute *attr,
1088           const char *buf, size_t count)
1089 {
1090         struct i2c_client *client = to_i2c_client(dev);
1091         struct w83795_data *data = i2c_get_clientdata(client);
1092         struct sensor_device_attribute_2 *sensor_attr =
1093             to_sensor_dev_attr_2(attr);
1094         int nr = sensor_attr->nr;
1095         int index = sensor_attr->index;
1096         unsigned long val;
1097
1098         if (strict_strtoul(buf, 10, &val) < 0)
1099                 return -EINVAL;
1100         val /= 1000;
1101
1102         mutex_lock(&data->update_lock);
1103         w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1104         data->sf4_reg[index][SF4_TEMP][nr] = val;
1105         mutex_unlock(&data->update_lock);
1106
1107         return count;
1108 }
1109
1110
1111 static ssize_t
1112 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1113 {
1114         struct sensor_device_attribute_2 *sensor_attr =
1115             to_sensor_dev_attr_2(attr);
1116         int nr = sensor_attr->nr;
1117         int index = sensor_attr->index;
1118         struct w83795_data *data = w83795_update_device(dev);
1119         long temp = temp_from_reg(data->temp[index][nr] & 0x7f);
1120
1121         if (TEMP_READ == nr)
1122                 temp += ((data->temp_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03)
1123                         * 250;
1124         if (data->temp[index][nr] & 0x80)
1125                 temp = -temp;
1126         return sprintf(buf, "%ld\n", temp);
1127 }
1128
1129 static ssize_t
1130 store_temp(struct device *dev, struct device_attribute *attr,
1131            const char *buf, size_t count)
1132 {
1133         struct sensor_device_attribute_2 *sensor_attr =
1134             to_sensor_dev_attr_2(attr);
1135         int nr = sensor_attr->nr;
1136         int index = sensor_attr->index;
1137         struct i2c_client *client = to_i2c_client(dev);
1138         struct w83795_data *data = i2c_get_clientdata(client);
1139         long tmp;
1140
1141         if (strict_strtol(buf, 10, &tmp) < 0)
1142                 return -EINVAL;
1143
1144         mutex_lock(&data->update_lock);
1145         data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1146         w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1147         mutex_unlock(&data->update_lock);
1148         return count;
1149 }
1150
1151
1152 static ssize_t
1153 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1154 {
1155         struct i2c_client *client = to_i2c_client(dev);
1156         struct w83795_data *data = i2c_get_clientdata(client);
1157         struct sensor_device_attribute_2 *sensor_attr =
1158             to_sensor_dev_attr_2(attr);
1159         int index = sensor_attr->index;
1160         u8 tmp;
1161
1162         if (data->enable_dts == 0)
1163                 return sprintf(buf, "%d\n", 0);
1164
1165         if ((data->has_dts >> index) & 0x01) {
1166                 if (data->enable_dts & 2)
1167                         tmp = 5;
1168                 else
1169                         tmp = 6;
1170         } else {
1171                 tmp = 0;
1172         }
1173
1174         return sprintf(buf, "%d\n", tmp);
1175 }
1176
1177 static ssize_t
1178 show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1179 {
1180         struct sensor_device_attribute_2 *sensor_attr =
1181             to_sensor_dev_attr_2(attr);
1182         int index = sensor_attr->index;
1183         struct w83795_data *data = w83795_update_device(dev);
1184         long temp = temp_from_reg(data->dts[index] & 0x7f);
1185
1186         temp += ((data->dts_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03) * 250;
1187         if (data->dts[index] & 0x80)
1188                 temp = -temp;
1189         return sprintf(buf, "%ld\n", temp);
1190 }
1191
1192 static ssize_t
1193 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1194 {
1195         struct sensor_device_attribute_2 *sensor_attr =
1196             to_sensor_dev_attr_2(attr);
1197         int nr = sensor_attr->nr;
1198         struct i2c_client *client = to_i2c_client(dev);
1199         struct w83795_data *data = i2c_get_clientdata(client);
1200         long temp = temp_from_reg(data->dts_ext[nr] & 0x7f);
1201
1202         if (data->dts_ext[nr] & 0x80)
1203                 temp = -temp;
1204         return sprintf(buf, "%ld\n", temp);
1205 }
1206
1207 static ssize_t
1208 store_dts_ext(struct device *dev, struct device_attribute *attr,
1209            const char *buf, size_t count)
1210 {
1211         struct sensor_device_attribute_2 *sensor_attr =
1212             to_sensor_dev_attr_2(attr);
1213         int nr = sensor_attr->nr;
1214         struct i2c_client *client = to_i2c_client(dev);
1215         struct w83795_data *data = i2c_get_clientdata(client);
1216         long tmp;
1217
1218         if (strict_strtol(buf, 10, &tmp) < 0)
1219                 return -EINVAL;
1220
1221         mutex_lock(&data->update_lock);
1222         data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1223         w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1224         mutex_unlock(&data->update_lock);
1225         return count;
1226 }
1227
1228
1229 /*
1230         Type 3:  Thermal diode
1231         Type 4:  Thermistor
1232
1233         Temp5-6, default TR
1234         Temp1-4, default TD
1235 */
1236
1237 static ssize_t
1238 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1239 {
1240         struct i2c_client *client = to_i2c_client(dev);
1241         struct w83795_data *data = i2c_get_clientdata(client);
1242         struct sensor_device_attribute_2 *sensor_attr =
1243             to_sensor_dev_attr_2(attr);
1244         int index = sensor_attr->index;
1245         u8 tmp;
1246
1247         if (data->has_temp >> index & 0x01) {
1248                 if (data->temp_mode >> index & 0x01)
1249                         tmp = 3;
1250                 else
1251                         tmp = 4;
1252         } else {
1253                 tmp = 0;
1254         }
1255
1256         return sprintf(buf, "%d\n", tmp);
1257 }
1258
1259 static ssize_t
1260 store_temp_mode(struct device *dev, struct device_attribute *attr,
1261                 const char *buf, size_t count)
1262 {
1263         struct i2c_client *client = to_i2c_client(dev);
1264         struct w83795_data *data = i2c_get_clientdata(client);
1265         struct sensor_device_attribute_2 *sensor_attr =
1266             to_sensor_dev_attr_2(attr);
1267         int index = sensor_attr->index;
1268         unsigned long val;
1269         u8 tmp;
1270         u32 mask;
1271
1272         if (strict_strtoul(buf, 10, &val) < 0)
1273                 return -EINVAL;
1274         if ((val != 4) && (val != 3))
1275                 return -EINVAL;
1276         if ((index > 3) && (val == 3))
1277                 return -EINVAL;
1278
1279         mutex_lock(&data->update_lock);
1280         if (val == 3) {
1281                 val = TEMP_CTRL_TD;
1282                 data->has_temp |= 1 << index;
1283                 data->temp_mode |= 1 << index;
1284         } else if (val == 4) {
1285                 val = TEMP_CTRL_TR;
1286                 data->has_temp |= 1 << index;
1287                 tmp = 1 << index;
1288                 data->temp_mode &= ~tmp;
1289         }
1290
1291         if (index > 3)
1292                 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
1293         else
1294                 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1295
1296         mask = 0x03 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_SHIFT];
1297         tmp &= ~mask;
1298         tmp |= W83795_REG_TEMP_CTRL[index][val];
1299
1300         mask = 1 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_HASIN_SHIFT];
1301         data->has_in &= ~mask;
1302
1303         if (index > 3)
1304                 w83795_write(client, W83795_REG_TEMP_CTRL1, tmp);
1305         else
1306                 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1307
1308         mutex_unlock(&data->update_lock);
1309         return count;
1310 }
1311
1312
1313 /* show/store VIN */
1314 static ssize_t
1315 show_in(struct device *dev, struct device_attribute *attr, char *buf)
1316 {
1317         struct sensor_device_attribute_2 *sensor_attr =
1318             to_sensor_dev_attr_2(attr);
1319         int nr = sensor_attr->nr;
1320         int index = sensor_attr->index;
1321         struct w83795_data *data = w83795_update_device(dev);
1322         u16 val = data->in[index][nr];
1323         u8 lsb_idx;
1324
1325         switch (nr) {
1326         case IN_READ:
1327                 /* calculate this value again by sensors as sensors3.conf */
1328                 if ((index >= 17) &&
1329                     ((data->has_gain >> (index - 17)) & 1))
1330                         val *= 8;
1331                 break;
1332         case IN_MAX:
1333         case IN_LOW:
1334                 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1335                 val <<= 2;
1336                 val |= (data->in_lsb[lsb_idx][nr] >>
1337                         IN_LSB_SHIFT_IDX[lsb_idx][IN_LSB_SHIFT]) & 0x03;
1338                 if ((index >= 17) &&
1339                     ((data->has_gain >> (index - 17)) & 1))
1340                         val *= 8;
1341                 break;
1342         }
1343         val = in_from_reg(index, val);
1344
1345         return sprintf(buf, "%d\n", val);
1346 }
1347
1348 static ssize_t
1349 store_in(struct device *dev, struct device_attribute *attr,
1350          const char *buf, size_t count)
1351 {
1352         struct sensor_device_attribute_2 *sensor_attr =
1353             to_sensor_dev_attr_2(attr);
1354         int nr = sensor_attr->nr;
1355         int index = sensor_attr->index;
1356         struct i2c_client *client = to_i2c_client(dev);
1357         struct w83795_data *data = i2c_get_clientdata(client);
1358         unsigned long val;
1359         u8 tmp;
1360         u8 lsb_idx;
1361
1362         if (strict_strtoul(buf, 10, &val) < 0)
1363                 return -EINVAL;
1364         val = in_to_reg(index, val);
1365
1366         if ((index >= 17) &&
1367             ((data->has_gain >> (index - 17)) & 1))
1368                 val /= 8;
1369         val = SENSORS_LIMIT(val, 0, 0x3FF);
1370         mutex_lock(&data->update_lock);
1371
1372         lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1373         tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1374         tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1375         tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1376         w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1377         data->in_lsb[lsb_idx][nr] = tmp;
1378
1379         tmp = (val >> 2) & 0xff;
1380         w83795_write(client, W83795_REG_IN[index][nr], tmp);
1381         data->in[index][nr] = tmp;
1382
1383         mutex_unlock(&data->update_lock);
1384         return count;
1385 }
1386
1387
1388 static ssize_t
1389 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1390 {
1391         struct sensor_device_attribute_2 *sensor_attr =
1392             to_sensor_dev_attr_2(attr);
1393         int nr = sensor_attr->nr;
1394         struct i2c_client *client = to_i2c_client(dev);
1395         struct w83795_data *data = i2c_get_clientdata(client);
1396         u16 val = data->setup_pwm[nr];
1397
1398         switch (nr) {
1399         case SETUP_PWM_UPTIME:
1400         case SETUP_PWM_DOWNTIME:
1401                 val = time_from_reg(val);
1402                 break;
1403         }
1404
1405         return sprintf(buf, "%d\n", val);
1406 }
1407
1408 static ssize_t
1409 store_sf_setup(struct device *dev, struct device_attribute *attr,
1410          const char *buf, size_t count)
1411 {
1412         struct sensor_device_attribute_2 *sensor_attr =
1413             to_sensor_dev_attr_2(attr);
1414         int nr = sensor_attr->nr;
1415         struct i2c_client *client = to_i2c_client(dev);
1416         struct w83795_data *data = i2c_get_clientdata(client);
1417         unsigned long val;
1418
1419         if (strict_strtoul(buf, 10, &val) < 0)
1420                 return -EINVAL;
1421
1422         switch (nr) {
1423         case SETUP_PWM_DEFAULT:
1424                 val = SENSORS_LIMIT(val, 0, 0xff);
1425                 break;
1426         case SETUP_PWM_UPTIME:
1427         case SETUP_PWM_DOWNTIME:
1428                 val = time_to_reg(val);
1429                 if (val == 0)
1430                         return -EINVAL;
1431                 break;
1432         }
1433
1434         mutex_lock(&data->update_lock);
1435         data->setup_pwm[nr] = val;
1436         w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1437         mutex_unlock(&data->update_lock);
1438         return count;
1439 }
1440
1441
1442 #define NOT_USED                        -1
1443
1444 #define SENSOR_ATTR_IN(index)           \
1445         SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL,        \
1446                 IN_READ, index), \
1447         SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in,      \
1448                 store_in, IN_MAX, index),                               \
1449         SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in,      \
1450                 store_in, IN_LOW, index),                               \
1451         SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep,      \
1452                 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1453         SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO,              \
1454                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1455                 index + ((index > 14) ? 1 : 0))
1456
1457 #define SENSOR_ATTR_FAN(index)                                          \
1458         SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan,            \
1459                 NULL, FAN_INPUT, index - 1), \
1460         SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO,              \
1461                 show_fan, store_fan_min, FAN_MIN, index - 1),   \
1462         SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep,     \
1463                 NULL, ALARM_STATUS, index + 31),                        \
1464         SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO,             \
1465                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31)
1466
1467 #define SENSOR_ATTR_PWM(index)                                          \
1468         SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm,          \
1469                 store_pwm, PWM_OUTPUT, index - 1),                      \
1470         SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO,          \
1471                 show_pwm, store_pwm, PWM_NONSTOP, index - 1),           \
1472         SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO,            \
1473                 show_pwm, store_pwm, PWM_START, index - 1),             \
1474         SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO,        \
1475                 show_pwm, store_pwm, PWM_STOP_TIME, index - 1),  \
1476         SENSOR_ATTR_2(fan##index##_div, S_IWUSR | S_IRUGO,      \
1477                 show_pwm, store_pwm, PWM_DIV, index - 1),        \
1478         SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO,           \
1479                 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1)
1480
1481 #define SENSOR_ATTR_FANIN_TARGET(index)                                 \
1482         SENSOR_ATTR_2(speed_cruise##index##_target, S_IWUSR | S_IRUGO, \
1483                 show_fanin, store_fanin, FANIN_TARGET, index - 1)
1484
1485 #define SENSOR_ATTR_DTS(index)                                          \
1486         SENSOR_ATTR_2(temp##index##_type, S_IRUGO ,             \
1487                 show_dts_mode, NULL, NOT_USED, index - 7),      \
1488         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts,           \
1489                 NULL, NOT_USED, index - 7),                             \
1490         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1491                 store_dts_ext, DTS_CRIT, NOT_USED),                     \
1492         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1493                 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED),  \
1494         SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_dts_ext, \
1495                 store_dts_ext, DTS_WARN, NOT_USED),                     \
1496         SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR,       \
1497                 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED),  \
1498         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1499                 show_alarm_beep, NULL, ALARM_STATUS, index + 17),       \
1500         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1501                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17)
1502
1503 #define SENSOR_ATTR_TEMP(index)                                         \
1504         SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR,            \
1505                 show_temp_mode, store_temp_mode, NOT_USED, index - 1),  \
1506         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp,          \
1507                 NULL, TEMP_READ, index - 1),                            \
1508         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp,  \
1509                 store_temp, TEMP_CRIT, index - 1),                      \
1510         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1511                 show_temp, store_temp, TEMP_CRIT_HYST, index - 1),      \
1512         SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_temp, \
1513                 store_temp, TEMP_WARN, index - 1),                      \
1514         SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR,       \
1515                 show_temp, store_temp, TEMP_WARN_HYST, index - 1),      \
1516         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1517                 show_alarm_beep, NULL, ALARM_STATUS,                    \
1518                 index + (index > 4 ? 11 : 17)),                         \
1519         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1520                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1521                 index + (index > 4 ? 11 : 17)),                         \
1522         SENSOR_ATTR_2(temp##index##_source_sel, S_IWUSR | S_IRUGO,      \
1523                 show_temp_src, store_temp_src, NOT_USED, index - 1),    \
1524         SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO,      \
1525                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1526                 TEMP_PWM_ENABLE, index - 1),                            \
1527         SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1528                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1529                 TEMP_PWM_FAN_MAP, index - 1),                           \
1530         SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO,         \
1531                 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1532         SENSOR_ATTR_2(temp##index##_crit, S_IWUSR | S_IRUGO,            \
1533                 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1534         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IWUSR | S_IRUGO,       \
1535                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1536         SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO,  \
1537                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1538         SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1539                 show_sf4_pwm, store_sf4_pwm, 0, index - 1),             \
1540         SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1541                 show_sf4_pwm, store_sf4_pwm, 1, index - 1),             \
1542         SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1543                 show_sf4_pwm, store_sf4_pwm, 2, index - 1),             \
1544         SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1545                 show_sf4_pwm, store_sf4_pwm, 3, index - 1),             \
1546         SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1547                 show_sf4_pwm, store_sf4_pwm, 4, index - 1),             \
1548         SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1549                 show_sf4_pwm, store_sf4_pwm, 5, index - 1),             \
1550         SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1551                 show_sf4_pwm, store_sf4_pwm, 6, index - 1),             \
1552         SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1553                 show_sf4_temp, store_sf4_temp, 0, index - 1),           \
1554         SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1555                 show_sf4_temp, store_sf4_temp, 1, index - 1),           \
1556         SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1557                 show_sf4_temp, store_sf4_temp, 2, index - 1),           \
1558         SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1559                 show_sf4_temp, store_sf4_temp, 3, index - 1),           \
1560         SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1561                 show_sf4_temp, store_sf4_temp, 4, index - 1),           \
1562         SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1563                 show_sf4_temp, store_sf4_temp, 5, index - 1),           \
1564         SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1565                 show_sf4_temp, store_sf4_temp, 6, index - 1)
1566
1567
1568 static struct sensor_device_attribute_2 w83795_in[] = {
1569         SENSOR_ATTR_IN(0),
1570         SENSOR_ATTR_IN(1),
1571         SENSOR_ATTR_IN(2),
1572         SENSOR_ATTR_IN(3),
1573         SENSOR_ATTR_IN(4),
1574         SENSOR_ATTR_IN(5),
1575         SENSOR_ATTR_IN(6),
1576         SENSOR_ATTR_IN(7),
1577         SENSOR_ATTR_IN(8),
1578         SENSOR_ATTR_IN(9),
1579         SENSOR_ATTR_IN(10),
1580         SENSOR_ATTR_IN(11),
1581         SENSOR_ATTR_IN(12),
1582         SENSOR_ATTR_IN(13),
1583         SENSOR_ATTR_IN(14),
1584         SENSOR_ATTR_IN(15),
1585         SENSOR_ATTR_IN(16),
1586         SENSOR_ATTR_IN(17),
1587         SENSOR_ATTR_IN(18),
1588         SENSOR_ATTR_IN(19),
1589         SENSOR_ATTR_IN(20),
1590 };
1591
1592 static struct sensor_device_attribute_2 w83795_fan[] = {
1593         SENSOR_ATTR_FAN(1),
1594         SENSOR_ATTR_FAN(2),
1595         SENSOR_ATTR_FAN(3),
1596         SENSOR_ATTR_FAN(4),
1597         SENSOR_ATTR_FAN(5),
1598         SENSOR_ATTR_FAN(6),
1599         SENSOR_ATTR_FAN(7),
1600         SENSOR_ATTR_FAN(8),
1601         SENSOR_ATTR_FAN(9),
1602         SENSOR_ATTR_FAN(10),
1603         SENSOR_ATTR_FAN(11),
1604         SENSOR_ATTR_FAN(12),
1605         SENSOR_ATTR_FAN(13),
1606         SENSOR_ATTR_FAN(14),
1607 };
1608
1609 static struct sensor_device_attribute_2 w83795_temp[] = {
1610         SENSOR_ATTR_TEMP(1),
1611         SENSOR_ATTR_TEMP(2),
1612         SENSOR_ATTR_TEMP(3),
1613         SENSOR_ATTR_TEMP(4),
1614         SENSOR_ATTR_TEMP(5),
1615         SENSOR_ATTR_TEMP(6),
1616 };
1617
1618 static struct sensor_device_attribute_2 w83795_dts[] = {
1619         SENSOR_ATTR_DTS(7),
1620         SENSOR_ATTR_DTS(8),
1621         SENSOR_ATTR_DTS(9),
1622         SENSOR_ATTR_DTS(10),
1623         SENSOR_ATTR_DTS(11),
1624         SENSOR_ATTR_DTS(12),
1625         SENSOR_ATTR_DTS(13),
1626         SENSOR_ATTR_DTS(14),
1627 };
1628
1629 static struct sensor_device_attribute_2 w83795_static[] = {
1630         SENSOR_ATTR_FANIN_TARGET(1),
1631         SENSOR_ATTR_FANIN_TARGET(2),
1632         SENSOR_ATTR_FANIN_TARGET(3),
1633         SENSOR_ATTR_FANIN_TARGET(4),
1634         SENSOR_ATTR_FANIN_TARGET(5),
1635         SENSOR_ATTR_FANIN_TARGET(6),
1636         SENSOR_ATTR_FANIN_TARGET(7),
1637         SENSOR_ATTR_FANIN_TARGET(8),
1638         SENSOR_ATTR_PWM(1),
1639         SENSOR_ATTR_PWM(2),
1640 };
1641
1642 /* all registers existed in 795g than 795adg,
1643  * like PWM3 - PWM8 */
1644 static struct sensor_device_attribute_2 w83795_left_reg[] = {
1645         SENSOR_ATTR_PWM(3),
1646         SENSOR_ATTR_PWM(4),
1647         SENSOR_ATTR_PWM(5),
1648         SENSOR_ATTR_PWM(6),
1649         SENSOR_ATTR_PWM(7),
1650         SENSOR_ATTR_PWM(8),
1651 };
1652
1653 static struct sensor_device_attribute_2 sda_single_files[] = {
1654         SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep,
1655                       store_chassis_clear, ALARM_STATUS, 46),
1656         SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_beep_enable,
1657                       store_beep_enable, NOT_USED, NOT_USED),
1658         SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1659                 store_fanin, FANIN_TOL, NOT_USED),
1660         SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1661                       store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1662         SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1663                       store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1664         SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1665                       store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1666 };
1667
1668 /*
1669  * Driver interface
1670  */
1671
1672 static void w83795_init_client(struct i2c_client *client)
1673 {
1674         if (reset)
1675                 w83795_write(client, W83795_REG_CONFIG, 0x80);
1676
1677         /* Start monitoring */
1678         w83795_write(client, W83795_REG_CONFIG,
1679                      w83795_read(client, W83795_REG_CONFIG) | 0x01);
1680 }
1681
1682 /* Return 0 if detection is successful, -ENODEV otherwise */
1683 static int w83795_detect(struct i2c_client *client,
1684                          struct i2c_board_info *info)
1685 {
1686         u8 tmp, bank;
1687         struct i2c_adapter *adapter = client->adapter;
1688         unsigned short address = client->addr;
1689
1690         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1691                 return -ENODEV;
1692         bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1693
1694         tmp = bank & 0x80 ? 0x5c : 0xa3;
1695         /* Check Nuvoton vendor ID */
1696         if (tmp != i2c_smbus_read_byte_data(client,
1697                                                 W83795_REG_VENDORID)) {
1698                 pr_debug("w83795: Detection failed at check "
1699                          "vendor id\n");
1700                 return -ENODEV;
1701         }
1702
1703         /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1704            should match */
1705         if ((bank & 0x07) == 0
1706          && (i2c_smbus_read_byte_data(client, W83795_REG_I2C_ADDR) & 0x7f) !=
1707             address) {
1708                 pr_debug("w83795: Detection failed at check "
1709                          "i2c addr\n");
1710                 return -ENODEV;
1711         }
1712
1713         /* Determine the chip type now */
1714         if (0x79 != i2c_smbus_read_byte_data(client,
1715                                              W83795_REG_CHIPID)) {
1716                 pr_debug("w83795: Detection failed at check "
1717                          "chip id\n");
1718                 return -ENODEV;
1719         }
1720
1721 #if 0
1722         /* Check 795 chip type: 795G or 795ADG */
1723         if (W83795_REG_CONFIG_CONFIG48 &
1724                   w83795_read(client, W83795_REG_CONFIG)) {
1725                 data->chip_type = w83795adg;
1726         } else {
1727                 data->chip_type = w83795g;
1728         }
1729 #endif
1730
1731         /* Fill in the remaining client fields and put into the global list */
1732         strlcpy(info->type, "w83795", I2C_NAME_SIZE);
1733
1734         return 0;
1735 }
1736
1737 static int w83795_probe(struct i2c_client *client,
1738                         const struct i2c_device_id *id)
1739 {
1740         int i;
1741         u8 tmp;
1742         struct device *dev = &client->dev;
1743         struct w83795_data *data;
1744         int err = 0;
1745
1746         data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL);
1747         if (!data) {
1748                 err = -ENOMEM;
1749                 goto exit;
1750         }
1751
1752         i2c_set_clientdata(client, data);
1753         data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1754         mutex_init(&data->update_lock);
1755
1756         /* Initialize the chip */
1757         w83795_init_client(client);
1758
1759         /* Check 795 chip type: 795G or 795ADG */
1760         if (W83795_REG_CONFIG_CONFIG48 &
1761                   w83795_read(client, W83795_REG_CONFIG)) {
1762                 data->chip_type = w83795adg;
1763         } else {
1764                 data->chip_type = w83795g;
1765         }
1766
1767         data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1);
1768         data->has_in |= w83795_read(client, W83795_REG_VOLT_CTRL2) << 8;
1769         /* VSEN11-9 not for 795adg */
1770         if (data->chip_type == w83795adg)
1771                 data->has_in &= 0xf8ff;
1772         data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1);
1773         data->has_fan |= w83795_read(client, W83795_REG_FANIN_CTRL2) << 8;
1774
1775         /* VDSEN12-17 and TR1-6, TD1-4 use same register */
1776         tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
1777         if (tmp & 0x20)
1778                 data->enable_dts = 1;
1779         else
1780                 data->enable_dts = 0;
1781         data->has_temp = 0;
1782         data->temp_mode = 0;
1783         if (tmp & 0x08) {
1784                 if (tmp & 0x04)
1785                         data->has_temp |= 0x20;
1786                 else
1787                         data->has_in |= 0x10000;
1788         }
1789         if (tmp & 0x02) {
1790                 if (tmp & 0x01)
1791                         data->has_temp |= 0x10;
1792                 else
1793                         data->has_in |= 0x8000;
1794         }
1795         tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1796         if (tmp & 0x40) {
1797                 data->has_temp |= 0x08;
1798                 if (!(tmp & 0x80))
1799                         data->temp_mode |= 0x08;
1800         } else if (tmp & 0x80) {
1801                 data->has_in |= 0x100000;
1802         }
1803         if (tmp & 0x10) {
1804                 data->has_temp |= 0x04;
1805                 if (!(tmp & 0x20))
1806                         data->temp_mode |= 0x04;
1807         } else if (tmp & 0x20) {
1808                 data->has_in |= 0x80000;
1809         }
1810         if (tmp & 0x04) {
1811                 data->has_temp |= 0x02;
1812                 if (!(tmp & 0x08))
1813                         data->temp_mode |= 0x02;
1814         } else if (tmp & 0x08) {
1815                 data->has_in |= 0x40000;
1816         }
1817         if (tmp & 0x01) {
1818                 data->has_temp |= 0x01;
1819                 if (!(tmp & 0x02))
1820                         data->temp_mode |= 0x01;
1821         } else if (tmp & 0x02) {
1822                 data->has_in |= 0x20000;
1823         }
1824
1825         /* Check DTS enable status */
1826         if (data->enable_dts == 0) {
1827                 data->has_dts = 0;
1828         } else {
1829                 if (1 & w83795_read(client, W83795_REG_DTSC))
1830                         data->enable_dts |= 2;
1831                 data->has_dts = w83795_read(client, W83795_REG_DTSE);
1832         }
1833
1834         /* First update the voltages measured value and limits */
1835         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
1836                 if (!(data->has_in & (1 << i)))
1837                         continue;
1838                 data->in[i][IN_MAX] =
1839                         w83795_read(client, W83795_REG_IN[i][IN_MAX]);
1840                 data->in[i][IN_LOW] =
1841                         w83795_read(client, W83795_REG_IN[i][IN_LOW]);
1842                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
1843                 tmp |= (w83795_read(client, W83795_REG_VRLSB)
1844                         >> VRLSB_SHIFT) & 0x03;
1845                 data->in[i][IN_READ] = tmp;
1846         }
1847         for (i = 0; i < IN_LSB_REG_NUM; i++) {
1848                 data->in_lsb[i][IN_MAX] =
1849                         w83795_read(client, IN_LSB_REG(i, IN_MAX));
1850                 data->in_lsb[i][IN_LOW] =
1851                         w83795_read(client, IN_LSB_REG(i, IN_LOW));
1852         }
1853         data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
1854
1855         /* First update fan and limits */
1856         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
1857                 if (!(data->has_fan & (1 << i)))
1858                         continue;
1859                 data->fan_min[i] =
1860                         w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
1861                 data->fan_min[i] |=
1862                   (w83795_read(client, W83795_REG_FAN_MIN_LSB(i) >>
1863                         W83795_REG_FAN_MIN_LSB_SHIFT(i))) & 0x0F;
1864                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
1865                 data->fan[i] |=
1866                   (w83795_read(client, W83795_REG_VRLSB >> 4)) & 0x0F;
1867         }
1868
1869         /* temperature and limits */
1870         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
1871                 if (!(data->has_temp & (1 << i)))
1872                         continue;
1873                 data->temp[i][TEMP_CRIT] =
1874                         w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT]);
1875                 data->temp[i][TEMP_CRIT_HYST] =
1876                         w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT_HYST]);
1877                 data->temp[i][TEMP_WARN] =
1878                         w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN]);
1879                 data->temp[i][TEMP_WARN_HYST] =
1880                         w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN_HYST]);
1881                 data->temp[i][TEMP_READ] =
1882                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
1883                 data->temp_read_vrlsb[i] =
1884                         w83795_read(client, W83795_REG_VRLSB);
1885         }
1886
1887         /* dts temperature and limits */
1888         if (data->enable_dts != 0) {
1889                 data->dts_ext[DTS_CRIT] =
1890                         w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT));
1891                 data->dts_ext[DTS_CRIT_HYST] =
1892                         w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT_HYST));
1893                 data->dts_ext[DTS_WARN] =
1894                         w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN));
1895                 data->dts_ext[DTS_WARN_HYST] =
1896                         w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN_HYST));
1897                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
1898                         if (!(data->has_dts & (1 << i)))
1899                                 continue;
1900                         data->dts[i] = w83795_read(client, W83795_REG_DTS(i));
1901                         data->dts_read_vrlsb[i] =
1902                                 w83795_read(client, W83795_REG_VRLSB);
1903                 }
1904         }
1905
1906         /* First update temp source selction */
1907         for (i = 0; i < 3; i++)
1908                 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
1909
1910         /* pwm and smart fan */
1911         if (data->chip_type == w83795g)
1912                 data->has_pwm = 8;
1913         else
1914                 data->has_pwm = 2;
1915         data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
1916         data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
1917         /* w83795adg only support pwm2-0 */
1918         for (i = 0; i < W83795_REG_TEMP_NUM; i++)
1919                 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
1920         data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
1921         for (i = 0; i < data->has_pwm; i++) {
1922                 for (tmp = 0; tmp < 5; tmp++) {
1923                         data->pwm[i][tmp] =
1924                                 w83795_read(client, W83795_REG_PWM(i, tmp));
1925                 }
1926         }
1927         for (i = 0; i < 8; i++) {
1928                 data->target_speed[i] =
1929                         w83795_read(client, W83795_REG_FTSH(i)) << 4;
1930                 data->target_speed[i] |=
1931                         w83795_read(client, W83795_REG_FTSL(i)) >> 4;
1932         }
1933         data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
1934
1935         for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
1936                 data->pwm_temp[i][TEMP_PWM_TTTI] =
1937                         w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
1938                 data->pwm_temp[i][TEMP_PWM_CTFS] =
1939                         w83795_read(client, W83795_REG_CTFS(i));
1940                 tmp = w83795_read(client, W83795_REG_HT(i));
1941                 data->pwm_temp[i][TEMP_PWM_HCT] = (tmp >> 4) & 0x0f;
1942                 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
1943         }
1944         for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
1945                 for (tmp = 0; tmp < 7; tmp++) {
1946                         data->sf4_reg[i][SF4_TEMP][tmp] =
1947                                 w83795_read(client,
1948                                             W83795_REG_SF4_TEMP(i, tmp));
1949                         data->sf4_reg[i][SF4_PWM][tmp] =
1950                                 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
1951                 }
1952         }
1953
1954         /* Setup PWM Register */
1955         for (i = 0; i < 3; i++) {
1956                 data->setup_pwm[i] =
1957                         w83795_read(client, W83795_REG_SETUP_PWM(i));
1958         }
1959
1960         /* alarm and beep */
1961         for (i = 0; i < ALARM_BEEP_REG_NUM; i++) {
1962                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
1963                 data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i));
1964         }
1965         data->beep_enable =
1966                 (w83795_read(client, W83795_REG_BEEP(5)) >> 7) & 0x01;
1967
1968         /* Register sysfs hooks */
1969         for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
1970                 if (!(data->has_in & (1 << (i / 6))))
1971                         continue;
1972                 err = device_create_file(dev, &w83795_in[i].dev_attr);
1973                 if (err)
1974                         goto exit_remove;
1975         }
1976
1977         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
1978                 if (!(data->has_fan & (1 << (i / 5))))
1979                         continue;
1980                 err = device_create_file(dev, &w83795_fan[i].dev_attr);
1981                 if (err)
1982                         goto exit_remove;
1983         }
1984
1985         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1986                 err = device_create_file(dev, &sda_single_files[i].dev_attr);
1987                 if (err)
1988                         goto exit_remove;
1989         }
1990
1991         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
1992                 if (!(data->has_temp & (1 << (i / 29))))
1993                         continue;
1994                 err = device_create_file(dev, &w83795_temp[i].dev_attr);
1995                 if (err)
1996                         goto exit_remove;
1997         }
1998
1999         if (data->enable_dts != 0) {
2000                 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
2001                         if (!(data->has_dts & (1 << (i / 8))))
2002                                 continue;
2003                         err = device_create_file(dev, &w83795_dts[i].dev_attr);
2004                         if (err)
2005                                 goto exit_remove;
2006                 }
2007         }
2008
2009         if (data->chip_type == w83795g) {
2010                 for (i = 0; i < ARRAY_SIZE(w83795_left_reg); i++) {
2011                         err = device_create_file(dev,
2012                                                  &w83795_left_reg[i].dev_attr);
2013                         if (err)
2014                                 goto exit_remove;
2015                 }
2016         }
2017
2018         for (i = 0; i < ARRAY_SIZE(w83795_static); i++) {
2019                 err = device_create_file(dev, &w83795_static[i].dev_attr);
2020                 if (err)
2021                         goto exit_remove;
2022         }
2023
2024         data->hwmon_dev = hwmon_device_register(dev);
2025         if (IS_ERR(data->hwmon_dev)) {
2026                 err = PTR_ERR(data->hwmon_dev);
2027                 goto exit_remove;
2028         }
2029
2030         return 0;
2031
2032         /* Unregister sysfs hooks */
2033 exit_remove:
2034         for (i = 0; i < ARRAY_SIZE(w83795_in); i++)
2035                 device_remove_file(dev, &w83795_in[i].dev_attr);
2036
2037         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++)
2038                 device_remove_file(dev, &w83795_fan[i].dev_attr);
2039
2040         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
2041                 device_remove_file(dev, &sda_single_files[i].dev_attr);
2042
2043         if (data->chip_type == w83795g) {
2044                 for (i = 0; i < ARRAY_SIZE(w83795_left_reg); i++)
2045                         device_remove_file(dev, &w83795_left_reg[i].dev_attr);
2046         }
2047
2048         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++)
2049                 device_remove_file(dev, &w83795_temp[i].dev_attr);
2050
2051         for (i = 0; i < ARRAY_SIZE(w83795_dts); i++)
2052                 device_remove_file(dev, &w83795_dts[i].dev_attr);
2053
2054         for (i = 0; i < ARRAY_SIZE(w83795_static); i++)
2055                 device_remove_file(dev, &w83795_static[i].dev_attr);
2056
2057         kfree(data);
2058 exit:
2059         return err;
2060 }
2061
2062 static int w83795_remove(struct i2c_client *client)
2063 {
2064         struct w83795_data *data = i2c_get_clientdata(client);
2065         struct device *dev = &client->dev;
2066         int i;
2067
2068         hwmon_device_unregister(data->hwmon_dev);
2069
2070         for (i = 0; i < ARRAY_SIZE(w83795_in); i++)
2071                 device_remove_file(dev, &w83795_in[i].dev_attr);
2072
2073         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++)
2074                 device_remove_file(dev, &w83795_fan[i].dev_attr);
2075
2076         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
2077                 device_remove_file(dev, &sda_single_files[i].dev_attr);
2078
2079         if (data->chip_type == w83795g) {
2080                 for (i = 0; i < ARRAY_SIZE(w83795_left_reg); i++)
2081                         device_remove_file(dev, &w83795_left_reg[i].dev_attr);
2082         }
2083
2084         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++)
2085                 device_remove_file(dev, &w83795_temp[i].dev_attr);
2086
2087         for (i = 0; i < ARRAY_SIZE(w83795_dts); i++)
2088                 device_remove_file(dev, &w83795_dts[i].dev_attr);
2089
2090         for (i = 0; i < ARRAY_SIZE(w83795_static); i++)
2091                 device_remove_file(dev, &w83795_static[i].dev_attr);
2092
2093         kfree(data);
2094
2095         return 0;
2096 }
2097
2098
2099 static const struct i2c_device_id w83795_id[] = {
2100         { "w83795", w83795 },
2101         { }
2102 };
2103 MODULE_DEVICE_TABLE(i2c, w83795_id);
2104
2105 static struct i2c_driver w83795_driver = {
2106         .driver = {
2107                    .name = "w83795",
2108         },
2109         .probe          = w83795_probe,
2110         .remove         = w83795_remove,
2111         .id_table       = w83795_id,
2112
2113         .class          = I2C_CLASS_HWMON,
2114         .detect         = w83795_detect,
2115         .address_list   = normal_i2c,
2116 };
2117
2118 static int __init sensors_w83795_init(void)
2119 {
2120         return i2c_add_driver(&w83795_driver);
2121 }
2122
2123 static void __exit sensors_w83795_exit(void)
2124 {
2125         i2c_del_driver(&w83795_driver);
2126 }
2127
2128 MODULE_AUTHOR("Wei Song");
2129 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2130 MODULE_LICENSE("GPL");
2131
2132 module_init(sensors_w83795_init);
2133 module_exit(sensors_w83795_exit);