drivers/hwmon/w83795.c

   1 /*
   2  *  w83795.c - Linux kernel driver for hardware monitoring
   3  *  Copyright (C) 2008 Nuvoton Technology Corp.
   4  *                Wei Song
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation - version 2.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  18  *  02110-1301 USA.
  19  *
  20  *  Supports following chips:
  21  *
  22  *  Chip       #vin   #fanin #pwm #temp #dts wchipid  vendid  i2c  ISA
  23  *  w83795g     21     14     8     6     8    0x79   0x5ca3  yes   no
  24  *  w83795adg   18     14     2     6     8    0x79   0x5ca3  yes   no
  25  */
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/init.h>
  30 #include <linux/slab.h>
  31 #include <linux/i2c.h>
  32 #include <linux/hwmon.h>
  33 #include <linux/hwmon-sysfs.h>
  34 #include <linux/err.h>
  35 #include <linux/mutex.h>
  36 #include <linux/delay.h>
  37
  38 /* Addresses to scan */
  39 static const unsigned short normal_i2c[] = {
  40         0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END
  41 };
  42
  43
  44 static int reset;
  45 module_param(reset, bool, 0);
  46 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
  47
  48
  49 #define W83795_REG_BANKSEL              0x00
  50 #define W83795_REG_VENDORID             0xfd
  51 #define W83795_REG_CHIPID               0xfe
  52 #define W83795_REG_DEVICEID             0xfb
  53 #define W83795_REG_DEVICEID_A           0xff
  54
  55 #define W83795_REG_I2C_ADDR             0xfc
  56 #define W83795_REG_CONFIG               0x01
  57 #define W83795_REG_CONFIG_CONFIG48      0x04
  58 #define W83795_REG_CONFIG_START 0x01
  59
  60 /* Multi-Function Pin Ctrl Registers */
  61 #define W83795_REG_VOLT_CTRL1           0x02
  62 #define W83795_REG_VOLT_CTRL2           0x03
  63 #define W83795_REG_TEMP_CTRL1           0x04
  64 #define W83795_REG_TEMP_CTRL2           0x05
  65 #define W83795_REG_FANIN_CTRL1          0x06
  66 #define W83795_REG_FANIN_CTRL2          0x07
  67 #define W83795_REG_VMIGB_CTRL           0x08
  68
  69 #define TEMP_CTRL_DISABLE               0
  70 #define TEMP_CTRL_TD                    1
  71 #define TEMP_CTRL_VSEN                  2
  72 #define TEMP_CTRL_TR                    3
  73 #define TEMP_CTRL_SHIFT                 4
  74 #define TEMP_CTRL_HASIN_SHIFT           5
  75 /* temp mode may effect VSEN17-12 (in20-15) */
  76 static const u16 W83795_REG_TEMP_CTRL[][6] = {
  77         /* Disable, TD, VSEN, TR, register shift value, has_in shift num */
  78         {0x00, 0x01, 0x02, 0x03, 0, 17},        /* TR1 */
  79         {0x00, 0x04, 0x08, 0x0C, 2, 18},        /* TR2 */
  80         {0x00, 0x10, 0x20, 0x30, 4, 19},        /* TR3 */
  81         {0x00, 0x40, 0x80, 0xC0, 6, 20},        /* TR4 */
  82         {0x00, 0x00, 0x02, 0x03, 0, 15},        /* TR5 */
  83         {0x00, 0x00, 0x08, 0x0C, 2, 16},        /* TR6 */
  84 };
  85
  86 #define TEMP_READ                       0
  87 #define TEMP_CRIT                       1
  88 #define TEMP_CRIT_HYST                  2
  89 #define TEMP_WARN                       3
  90 #define TEMP_WARN_HYST                  4
  91 /* only crit and crit_hyst affect real-time alarm status
  92  * current crit crit_hyst warn warn_hyst */
  93 static const u16 W83795_REG_TEMP[][5] = {
  94         {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
  95         {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
  96         {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
  97         {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
  98         {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
  99         {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
 100 };
 101
 102 #define IN_READ                         0
 103 #define IN_MAX                          1
 104 #define IN_LOW                          2
 105 static const u16 W83795_REG_IN[][3] = {
 106         /* Current, HL, LL */
 107         {0x10, 0x70, 0x71},     /* VSEN1 */
 108         {0x11, 0x72, 0x73},     /* VSEN2 */
 109         {0x12, 0x74, 0x75},     /* VSEN3 */
 110         {0x13, 0x76, 0x77},     /* VSEN4 */
 111         {0x14, 0x78, 0x79},     /* VSEN5 */
 112         {0x15, 0x7a, 0x7b},     /* VSEN6 */
 113         {0x16, 0x7c, 0x7d},     /* VSEN7 */
 114         {0x17, 0x7e, 0x7f},     /* VSEN8 */
 115         {0x18, 0x80, 0x81},     /* VSEN9 */
 116         {0x19, 0x82, 0x83},     /* VSEN10 */
 117         {0x1A, 0x84, 0x85},     /* VSEN11 */
 118         {0x1B, 0x86, 0x87},     /* VTT */
 119         {0x1C, 0x88, 0x89},     /* 3VDD */
 120         {0x1D, 0x8a, 0x8b},     /* 3VSB */
 121         {0x1E, 0x8c, 0x8d},     /* VBAT */
 122         {0x1F, 0xa6, 0xa7},     /* VSEN12 */
 123         {0x20, 0xaa, 0xab},     /* VSEN13 */
 124         {0x21, 0x96, 0x97},     /* VSEN14 */
 125         {0x22, 0x9a, 0x9b},     /* VSEN15 */
 126         {0x23, 0x9e, 0x9f},     /* VSEN16 */
 127         {0x24, 0xa2, 0xa3},     /* VSEN17 */
 128 };
 129 #define W83795_REG_VRLSB                0x3C
 130
 131 static const u8 W83795_REG_IN_HL_LSB[] = {
 132         0x8e,   /* VSEN1-4 */
 133         0x90,   /* VSEN5-8 */
 134         0x92,   /* VSEN9-11 */
 135         0x94,   /* VTT, 3VDD, 3VSB, 3VBAT */
 136         0xa8,   /* VSEN12 */
 137         0xac,   /* VSEN13 */
 138         0x98,   /* VSEN14 */
 139         0x9c,   /* VSEN15 */
 140         0xa0,   /* VSEN16 */
 141         0xa4,   /* VSEN17 */
 142 };
 143
 144 #define IN_LSB_REG(index, type) \
 145         (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
 146         : (W83795_REG_IN_HL_LSB[(index)] + 1))
 147
 148 #define IN_LSB_REG_NUM                  10
 149
 150 #define IN_LSB_SHIFT                    0
 151 #define IN_LSB_IDX                      1
 152 static const u8 IN_LSB_SHIFT_IDX[][2] = {
 153         /* High/Low LSB shift, LSB No. */
 154         {0x00, 0x00},   /* VSEN1 */
 155         {0x02, 0x00},   /* VSEN2 */
 156         {0x04, 0x00},   /* VSEN3 */
 157         {0x06, 0x00},   /* VSEN4 */
 158         {0x00, 0x01},   /* VSEN5 */
 159         {0x02, 0x01},   /* VSEN6 */
 160         {0x04, 0x01},   /* VSEN7 */
 161         {0x06, 0x01},   /* VSEN8 */
 162         {0x00, 0x02},   /* VSEN9 */
 163         {0x02, 0x02},   /* VSEN10 */
 164         {0x04, 0x02},   /* VSEN11 */
 165         {0x00, 0x03},   /* VTT */
 166         {0x02, 0x03},   /* 3VDD */
 167         {0x04, 0x03},   /* 3VSB */
 168         {0x06, 0x03},   /* VBAT */
 169         {0x06, 0x04},   /* VSEN12 */
 170         {0x06, 0x05},   /* VSEN13 */
 171         {0x06, 0x06},   /* VSEN14 */
 172         {0x06, 0x07},   /* VSEN15 */
 173         {0x06, 0x08},   /* VSEN16 */
 174         {0x06, 0x09},   /* VSEN17 */
 175 };
 176
 177
 178 /* 3VDD, 3VSB, VBAT * 0.006 */
 179 #define REST_VLT_BEGIN                  12  /* the 13th volt to 15th */
 180 #define REST_VLT_END                    14  /* the 13th volt to 15th */
 181
 182 #define W83795_REG_FAN(index)           (0x2E + (index))
 183 #define W83795_REG_FAN_MIN_HL(index)    (0xB6 + (index))
 184 #define W83795_REG_FAN_MIN_LSB(index)   (0xC4 + (index) / 2)
 185 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
 186         (((index) % 1) ? 4 : 0)
 187
 188 #define W83795_REG_VID_CTRL             0x6A
 189
 190 #define ALARM_BEEP_REG_NUM              6
 191 #define W83795_REG_ALARM(index)         (0x41 + (index))
 192 #define W83795_REG_BEEP(index)          (0x50 + (index))
 193
 194 #define W83795_REG_CLR_CHASSIS          0x4D
 195
 196
 197 #define W83795_REG_TEMP_NUM             6
 198 #define W83795_REG_FCMS1                0x201
 199 #define W83795_REG_FCMS2                0x208
 200 #define W83795_REG_TFMR(index)          (0x202 + (index))
 201 #define W83795_REG_FOMC                 0x20F
 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_FREQ                        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_FTSH(index)          (0x240 + (index) * 2)
 217 #define W83795_REG_FTSL(index)          (0x241 + (index) * 2)
 218 #define W83795_REG_TFTS                 0x250
 219
 220 #define TEMP_PWM_TTTI                   0
 221 #define TEMP_PWM_CTFS                   1
 222 #define TEMP_PWM_HCT                    2
 223 #define TEMP_PWM_HOT                    3
 224 #define W83795_REG_TTTI(index)          (0x260 + (index))
 225 #define W83795_REG_CTFS(index)          (0x268 + (index))
 226 #define W83795_REG_HT(index)            (0x270 + (index))
 227
 228 #define SF4_TEMP                        0
 229 #define SF4_PWM                         1
 230 #define W83795_REG_SF4_TEMP(temp_num, index) \
 231         (0x280 + 0x10 * (temp_num) + (index))
 232 #define W83795_REG_SF4_PWM(temp_num, index) \
 233         (0x288 + 0x10 * (temp_num) + (index))
 234
 235 #define W83795_REG_DTSC                 0x301
 236 #define W83795_REG_DTSE                 0x302
 237 #define W83795_REG_DTS(index)           (0x26 + (index))
 238 #define W83795_REG_PECI_TBASE(index)    (0x320 + (index))
 239
 240 #define DTS_CRIT                        0
 241 #define DTS_CRIT_HYST                   1
 242 #define DTS_WARN                        2
 243 #define DTS_WARN_HYST                   3
 244 #define W83795_REG_DTS_EXT(index)       (0xB2 + (index))
 245
 246 #define SETUP_PWM_DEFAULT               0
 247 #define SETUP_PWM_UPTIME                1
 248 #define SETUP_PWM_DOWNTIME              2
 249 #define W83795_REG_SETUP_PWM(index)    (0x20C + (index))
 250
 251 static inline u16 in_from_reg(u8 index, u16 val)
 252 {
 253         if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END))
 254                 return val * 6;
 255         else
 256                 return val * 2;
 257 }
 258
 259 static inline u16 in_to_reg(u8 index, u16 val)
 260 {
 261         if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END))
 262                 return val / 6;
 263         else
 264                 return val / 2;
 265 }
 266
 267 static inline unsigned long fan_from_reg(u16 val)
 268 {
 269         if ((val == 0xfff) || (val == 0))
 270                 return 0;
 271         return 1350000UL / val;
 272 }
 273
 274 static inline u16 fan_to_reg(long rpm)
 275 {
 276         if (rpm <= 0)
 277                 return 0x0fff;
 278         return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
 279 }
 280
 281 static inline unsigned long time_from_reg(u8 reg)
 282 {
 283         return reg * 100;
 284 }
 285
 286 static inline u8 time_to_reg(unsigned long val)
 287 {
 288         return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
 289 }
 290
 291 static inline long temp_from_reg(s8 reg)
 292 {
 293         return reg * 1000;
 294 }
 295
 296 static inline s8 temp_to_reg(long val, s8 min, s8 max)
 297 {
 298         return SENSORS_LIMIT(val / 1000, min, max);
 299 }
 300
 301 static const u16 pwm_freq_cksel0[16] = {
 302         1024, 512, 341, 256, 205, 171, 146, 128,
 303         85, 64, 32, 16, 8, 4, 2, 1
 304 };
 305
 306 static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin)
 307 {
 308         unsigned long base_clock;
 309
 310         if (reg & 0x80) {
 311                 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
 312                 return base_clock / ((reg & 0x7f) + 1);
 313         } else
 314                 return pwm_freq_cksel0[reg & 0x0f];
 315 }
 316
 317 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
 318 {
 319         unsigned long base_clock;
 320         u8 reg0, reg1;
 321         unsigned long best0, best1;
 322
 323         /* Best fit for cksel = 0 */
 324         for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) {
 325                 if (val > (pwm_freq_cksel0[reg0] +
 326                            pwm_freq_cksel0[reg0 + 1]) / 2)
 327                         break;
 328         }
 329         if (val < 375)  /* cksel = 1 can't beat this */
 330                 return reg0;
 331         best0 = pwm_freq_cksel0[reg0];
 332
 333         /* Best fit for cksel = 1 */
 334         base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
 335         reg1 = SENSORS_LIMIT(DIV_ROUND_CLOSEST(base_clock, val), 1, 128);
 336         best1 = base_clock / reg1;
 337         reg1 = 0x80 | (reg1 - 1);
 338
 339         /* Choose the closest one */
 340         if (abs(val - best0) > abs(val - best1))
 341                 return reg1;
 342         else
 343                 return reg0;
 344 }
 345
 346 enum chip_types {w83795g, w83795adg};
 347
 348 struct w83795_data {
 349         struct device *hwmon_dev;
 350         struct mutex update_lock;
 351         unsigned long last_updated;     /* In jiffies */
 352         enum chip_types chip_type;
 353
 354         u8 bank;
 355
 356         u32 has_in;             /* Enable monitor VIN or not */
 357         u8 has_dyn_in;          /* Only in2-0 can have this */
 358         u16 in[21][3];          /* Register value, read/high/low */
 359         u8 in_lsb[10][3];       /* LSB Register value, high/low */
 360         u8 has_gain;            /* has gain: in17-20 * 8 */
 361
 362         u16 has_fan;            /* Enable fan14-1 or not */
 363         u16 fan[14];            /* Register value combine */
 364         u16 fan_min[14];        /* Register value combine */
 365
 366         u8 has_temp;            /* Enable monitor temp6-1 or not */
 367         s8 temp[6][5];          /* current, crit, crit_hyst, warn, warn_hyst */
 368         u8 temp_read_vrlsb[6];
 369         u8 temp_mode;           /* bit 0: TR mode, bit 1: TD mode */
 370         u8 temp_src[3];         /* Register value */
 371
 372         u8 enable_dts;          /* Enable PECI and SB-TSI,
 373                                  * bit 0: =1 enable, =0 disable,
 374                                  * bit 1: =1 AMD SB-TSI, =0 Intel PECI */
 375         u8 has_dts;             /* Enable monitor DTS temp */
 376         s8 dts[8];              /* Register value */
 377         u8 dts_read_vrlsb[8];   /* Register value */
 378         s8 dts_ext[4];          /* Register value */
 379
 380         u8 has_pwm;             /* 795g supports 8 pwm, 795adg only supports 2,
 381                                  * no config register, only affected by chip
 382                                  * type */
 383         u8 pwm[8][5];           /* Register value, output, start, non stop, stop
 384                                  * time, freq */
 385         u16 clkin;              /* CLKIN frequency in kHz */
 386         u8 pwm_fcms[2];         /* Register value */
 387         u8 pwm_tfmr[6];         /* Register value */
 388         u8 pwm_fomc;            /* Register value */
 389
 390         u16 target_speed[8];    /* Register value, target speed for speed
 391                                  * cruise */
 392         u8 tol_speed;           /* tolerance of target speed */
 393         u8 pwm_temp[6][4];      /* TTTI, CTFS, HCT, HOT */
 394         u8 sf4_reg[6][2][7];    /* 6 temp, temp/dcpwm, 7 registers */
 395
 396         u8 setup_pwm[3];        /* Register value */
 397
 398         u8 alarms[6];           /* Register value */
 399         u8 beeps[6];            /* Register value */
 400
 401         char valid;
 402 };
 403
 404 /*
 405  * Hardware access
 406  * We assume that nobdody can change the bank outside the driver.
 407  */
 408
 409 /* Must be called with data->update_lock held, except during initialization */
 410 static int w83795_set_bank(struct i2c_client *client, u8 bank)
 411 {
 412         struct w83795_data *data = i2c_get_clientdata(client);
 413         int err;
 414
 415         /* If the same bank is already set, nothing to do */
 416         if ((data->bank & 0x07) == bank)
 417                 return 0;
 418
 419         /* Change to new bank, preserve all other bits */
 420         bank |= data->bank & ~0x07;
 421         err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank);
 422         if (err < 0) {
 423                 dev_err(&client->dev,
 424                         "Failed to set bank to %d, err %d\n",
 425                         (int)bank, err);
 426                 return err;
 427         }
 428         data->bank = bank;
 429
 430         return 0;
 431 }
 432
 433 /* Must be called with data->update_lock held, except during initialization */
 434 static u8 w83795_read(struct i2c_client *client, u16 reg)
 435 {
 436         int err;
 437
 438         err = w83795_set_bank(client, reg >> 8);
 439         if (err < 0)
 440                 return 0x00;    /* Arbitrary */
 441
 442         err = i2c_smbus_read_byte_data(client, reg & 0xff);
 443         if (err < 0) {
 444                 dev_err(&client->dev,
 445                         "Failed to read from register 0x%03x, err %d\n",
 446                         (int)reg, err);
 447                 return 0x00;    /* Arbitrary */
 448         }
 449         return err;
 450 }
 451
 452 /* Must be called with data->update_lock held, except during initialization */
 453 static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
 454 {
 455         int err;
 456
 457         err = w83795_set_bank(client, reg >> 8);
 458         if (err < 0)
 459                 return err;
 460
 461         err = i2c_smbus_write_byte_data(client, reg & 0xff, value);
 462         if (err < 0)
 463                 dev_err(&client->dev,
 464                         "Failed to write to register 0x%03x, err %d\n",
 465                         (int)reg, err);
 466         return err;
 467 }
 468
 469 static struct w83795_data *w83795_update_device(struct device *dev)
 470 {
 471         struct i2c_client *client = to_i2c_client(dev);
 472         struct w83795_data *data = i2c_get_clientdata(client);
 473         u16 tmp;
 474         int i;
 475
 476         mutex_lock(&data->update_lock);
 477
 478         if (!(time_after(jiffies, data->last_updated + HZ * 2)
 479               || !data->valid))
 480                 goto END;
 481
 482         /* Update the voltages value */
 483         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
 484                 if (!(data->has_in & (1 << i)))
 485                         continue;
 486                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
 487                 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
 488                 data->in[i][IN_READ] = tmp;
 489         }
 490
 491         /* in0-2 can have dynamic limits (W83795G only) */
 492         if (data->has_dyn_in) {
 493                 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX));
 494                 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW));
 495
 496                 for (i = 0; i < 3; i++) {
 497                         if (!(data->has_dyn_in & (1 << i)))
 498                                 continue;
 499                         data->in[i][IN_MAX] =
 500                                 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
 501                         data->in[i][IN_LOW] =
 502                                 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
 503                         data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03;
 504                         data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03;
 505                 }
 506         }
 507
 508         /* Update fan */
 509         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
 510                 if (!(data->has_fan & (1 << i)))
 511                         continue;
 512                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
 513                 data->fan[i] |=
 514                   (w83795_read(client, W83795_REG_VRLSB) >> 4) & 0x0F;
 515         }
 516
 517         /* Update temperature */
 518         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
 519                 /* even stop monitor, register still keep value, just read out
 520                  * it */
 521                 if (!(data->has_temp & (1 << i))) {
 522                         data->temp[i][TEMP_READ] = 0;
 523                         data->temp_read_vrlsb[i] = 0;
 524                         continue;
 525                 }
 526                 data->temp[i][TEMP_READ] =
 527                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
 528                 data->temp_read_vrlsb[i] =
 529                         w83795_read(client, W83795_REG_VRLSB);
 530         }
 531
 532         /* Update dts temperature */
 533         if (data->enable_dts != 0) {
 534                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
 535                         if (!(data->has_dts & (1 << i)))
 536                                 continue;
 537                         data->dts[i] =
 538                                 w83795_read(client, W83795_REG_DTS(i));
 539                         data->dts_read_vrlsb[i] =
 540                                 w83795_read(client, W83795_REG_VRLSB);
 541                 }
 542         }
 543
 544         /* Update pwm output */
 545         for (i = 0; i < data->has_pwm; i++) {
 546                 data->pwm[i][PWM_OUTPUT] =
 547                     w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
 548         }
 549
 550         /* update alarm */
 551         for (i = 0; i < ALARM_BEEP_REG_NUM; i++)
 552                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
 553
 554         data->last_updated = jiffies;
 555         data->valid = 1;
 556
 557 END:
 558         mutex_unlock(&data->update_lock);
 559         return data;
 560 }
 561
 562 /*
 563  * Sysfs attributes
 564  */
 565
 566 #define ALARM_STATUS      0
 567 #define BEEP_ENABLE       1
 568 static ssize_t
 569 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
 570 {
 571         struct w83795_data *data = w83795_update_device(dev);
 572         struct sensor_device_attribute_2 *sensor_attr =
 573             to_sensor_dev_attr_2(attr);
 574         int nr = sensor_attr->nr;
 575         int index = sensor_attr->index >> 3;
 576         int bit = sensor_attr->index & 0x07;
 577         u8 val;
 578
 579         if (ALARM_STATUS == nr) {
 580                 val = (data->alarms[index] >> (bit)) & 1;
 581         } else {                /* BEEP_ENABLE */
 582                 val = (data->beeps[index] >> (bit)) & 1;
 583         }
 584
 585         return sprintf(buf, "%u\n", val);
 586 }
 587
 588 static ssize_t
 589 store_beep(struct device *dev, struct device_attribute *attr,
 590            const char *buf, size_t count)
 591 {
 592         struct i2c_client *client = to_i2c_client(dev);
 593         struct w83795_data *data = i2c_get_clientdata(client);
 594         struct sensor_device_attribute_2 *sensor_attr =
 595             to_sensor_dev_attr_2(attr);
 596         int index = sensor_attr->index >> 3;
 597         int shift = sensor_attr->index & 0x07;
 598         u8 beep_bit = 1 << shift;
 599         unsigned long val;
 600
 601         if (strict_strtoul(buf, 10, &val) < 0)
 602                 return -EINVAL;
 603         if (val != 0 && val != 1)
 604                 return -EINVAL;
 605
 606         mutex_lock(&data->update_lock);
 607         data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
 608         data->beeps[index] &= ~beep_bit;
 609         data->beeps[index] |= val << shift;
 610         w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
 611         mutex_unlock(&data->update_lock);
 612
 613         return count;
 614 }
 615
 616 /* Write any value to clear chassis alarm */
 617 static ssize_t
 618 store_chassis_clear(struct device *dev,
 619                     struct device_attribute *attr, const char *buf,
 620                     size_t count)
 621 {
 622         struct i2c_client *client = to_i2c_client(dev);
 623         struct w83795_data *data = i2c_get_clientdata(client);
 624         u8 val;
 625
 626         mutex_lock(&data->update_lock);
 627         val = w83795_read(client, W83795_REG_CLR_CHASSIS);
 628         val |= 0x80;
 629         w83795_write(client, W83795_REG_CLR_CHASSIS, val);
 630         mutex_unlock(&data->update_lock);
 631         return count;
 632 }
 633
 634 #define FAN_INPUT     0
 635 #define FAN_MIN       1
 636 static ssize_t
 637 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
 638 {
 639         struct sensor_device_attribute_2 *sensor_attr =
 640             to_sensor_dev_attr_2(attr);
 641         int nr = sensor_attr->nr;
 642         int index = sensor_attr->index;
 643         struct w83795_data *data = w83795_update_device(dev);
 644         u16 val;
 645
 646         if (FAN_INPUT == nr)
 647                 val = data->fan[index] & 0x0fff;
 648         else
 649                 val = data->fan_min[index] & 0x0fff;
 650
 651         return sprintf(buf, "%lu\n", fan_from_reg(val));
 652 }
 653
 654 static ssize_t
 655 store_fan_min(struct device *dev, struct device_attribute *attr,
 656               const char *buf, size_t count)
 657 {
 658         struct sensor_device_attribute_2 *sensor_attr =
 659             to_sensor_dev_attr_2(attr);
 660         int index = sensor_attr->index;
 661         struct i2c_client *client = to_i2c_client(dev);
 662         struct w83795_data *data = i2c_get_clientdata(client);
 663         unsigned long val;
 664
 665         if (strict_strtoul(buf, 10, &val))
 666                 return -EINVAL;
 667         val = fan_to_reg(val);
 668
 669         mutex_lock(&data->update_lock);
 670         data->fan_min[index] = val;
 671         w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
 672         val &= 0x0f;
 673         if (index % 1) {
 674                 val <<= 4;
 675                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 676                        & 0x0f;
 677         } else {
 678                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 679                        & 0xf0;
 680         }
 681         w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
 682         mutex_unlock(&data->update_lock);
 683
 684         return count;
 685 }
 686
 687 static ssize_t
 688 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 689 {
 690         struct w83795_data *data = w83795_update_device(dev);
 691         struct sensor_device_attribute_2 *sensor_attr =
 692             to_sensor_dev_attr_2(attr);
 693         int nr = sensor_attr->nr;
 694         int index = sensor_attr->index;
 695         unsigned int val;
 696
 697         switch (nr) {
 698         case PWM_STOP_TIME:
 699                 val = time_from_reg(data->pwm[index][nr]);
 700                 break;
 701         case PWM_FREQ:
 702                 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin);
 703                 break;
 704         default:
 705                 val = data->pwm[index][nr];
 706                 break;
 707         }
 708
 709         return sprintf(buf, "%u\n", val);
 710 }
 711
 712 static ssize_t
 713 store_pwm(struct device *dev, struct device_attribute *attr,
 714           const char *buf, size_t count)
 715 {
 716         struct i2c_client *client = to_i2c_client(dev);
 717         struct w83795_data *data = i2c_get_clientdata(client);
 718         struct sensor_device_attribute_2 *sensor_attr =
 719             to_sensor_dev_attr_2(attr);
 720         int nr = sensor_attr->nr;
 721         int index = sensor_attr->index;
 722         unsigned long val;
 723
 724         if (strict_strtoul(buf, 10, &val) < 0)
 725                 return -EINVAL;
 726
 727         mutex_lock(&data->update_lock);
 728         switch (nr) {
 729         case PWM_STOP_TIME:
 730                 val = time_to_reg(val);
 731                 break;
 732         case PWM_FREQ:
 733                 val = pwm_freq_to_reg(val, data->clkin);
 734                 break;
 735         default:
 736                 val = SENSORS_LIMIT(val, 0, 0xff);
 737                 break;
 738         }
 739         w83795_write(client, W83795_REG_PWM(index, nr), val);
 740         data->pwm[index][nr] = val;
 741         mutex_unlock(&data->update_lock);
 742         return count;
 743 }
 744
 745 static ssize_t
 746 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
 747 {
 748         struct sensor_device_attribute_2 *sensor_attr =
 749             to_sensor_dev_attr_2(attr);
 750         struct i2c_client *client = to_i2c_client(dev);
 751         struct w83795_data *data = i2c_get_clientdata(client);
 752         int index = sensor_attr->index;
 753         u8 tmp;
 754
 755         if (1 == (data->pwm_fcms[0] & (1 << index))) {
 756                 tmp = 2;
 757                 goto out;
 758         }
 759         for (tmp = 0; tmp < 6; tmp++) {
 760                 if (data->pwm_tfmr[tmp] & (1 << index)) {
 761                         tmp = 3;
 762                         goto out;
 763                 }
 764         }
 765         if (data->pwm_fomc & (1 << index))
 766                 tmp = 0;
 767         else
 768                 tmp = 1;
 769
 770 out:
 771         return sprintf(buf, "%u\n", tmp);
 772 }
 773
 774 static ssize_t
 775 store_pwm_enable(struct device *dev, struct device_attribute *attr,
 776           const char *buf, size_t count)
 777 {
 778         struct i2c_client *client = to_i2c_client(dev);
 779         struct w83795_data *data = i2c_get_clientdata(client);
 780         struct sensor_device_attribute_2 *sensor_attr =
 781             to_sensor_dev_attr_2(attr);
 782         int index = sensor_attr->index;
 783         unsigned long val;
 784         int i;
 785
 786         if (strict_strtoul(buf, 10, &val) < 0)
 787                 return -EINVAL;
 788         if (val > 2)
 789                 return -EINVAL;
 790
 791         mutex_lock(&data->update_lock);
 792         switch (val) {
 793         case 0:
 794         case 1:
 795                 data->pwm_fcms[0] &= ~(1 << index);
 796                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 797                 for (i = 0; i < 6; i++) {
 798                         data->pwm_tfmr[i] &= ~(1 << index);
 799                         w83795_write(client, W83795_REG_TFMR(i),
 800                                 data->pwm_tfmr[i]);
 801                 }
 802                 data->pwm_fomc |= 1 << index;
 803                 data->pwm_fomc ^= val << index;
 804                 w83795_write(client, W83795_REG_FOMC, data->pwm_fomc);
 805                 break;
 806         case 2:
 807                 data->pwm_fcms[0] |= (1 << index);
 808                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 809                 break;
 810         }
 811         mutex_unlock(&data->update_lock);
 812         return count;
 813 }
 814
 815 static ssize_t
 816 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
 817 {
 818         struct sensor_device_attribute_2 *sensor_attr =
 819             to_sensor_dev_attr_2(attr);
 820         struct i2c_client *client = to_i2c_client(dev);
 821         struct w83795_data *data = i2c_get_clientdata(client);
 822         int index = sensor_attr->index;
 823         u8 val = index / 2;
 824         u8 tmp = data->temp_src[val];
 825
 826         if (index % 1)
 827                 val = 4;
 828         else
 829                 val = 0;
 830         tmp >>= val;
 831         tmp &= 0x0f;
 832
 833         return sprintf(buf, "%u\n", tmp);
 834 }
 835
 836 static ssize_t
 837 store_temp_src(struct device *dev, struct device_attribute *attr,
 838           const char *buf, size_t count)
 839 {
 840         struct i2c_client *client = to_i2c_client(dev);
 841         struct w83795_data *data = i2c_get_clientdata(client);
 842         struct sensor_device_attribute_2 *sensor_attr =
 843             to_sensor_dev_attr_2(attr);
 844         int index = sensor_attr->index;
 845         unsigned long tmp;
 846         u8 val = index / 2;
 847
 848         if (strict_strtoul(buf, 10, &tmp) < 0)
 849                 return -EINVAL;
 850         tmp = SENSORS_LIMIT(tmp, 0, 15);
 851
 852         mutex_lock(&data->update_lock);
 853         if (index % 1) {
 854                 tmp <<= 4;
 855                 data->temp_src[val] &= 0x0f;
 856         } else {
 857                 data->temp_src[val] &= 0xf0;
 858         }
 859         data->temp_src[val] |= tmp;
 860         w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
 861         mutex_unlock(&data->update_lock);
 862
 863         return count;
 864 }
 865
 866 #define TEMP_PWM_ENABLE   0
 867 #define TEMP_PWM_FAN_MAP  1
 868 static ssize_t
 869 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 870                      char *buf)
 871 {
 872         struct i2c_client *client = to_i2c_client(dev);
 873         struct w83795_data *data = i2c_get_clientdata(client);
 874         struct sensor_device_attribute_2 *sensor_attr =
 875             to_sensor_dev_attr_2(attr);
 876         int nr = sensor_attr->nr;
 877         int index = sensor_attr->index;
 878         u8 tmp = 0xff;
 879
 880         switch (nr) {
 881         case TEMP_PWM_ENABLE:
 882                 tmp = (data->pwm_fcms[1] >> index) & 1;
 883                 if (tmp)
 884                         tmp = 4;
 885                 else
 886                         tmp = 3;
 887                 break;
 888         case TEMP_PWM_FAN_MAP:
 889                 tmp = data->pwm_tfmr[index];
 890                 break;
 891         }
 892
 893         return sprintf(buf, "%u\n", tmp);
 894 }
 895
 896 static ssize_t
 897 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 898           const char *buf, size_t count)
 899 {
 900         struct i2c_client *client = to_i2c_client(dev);
 901         struct w83795_data *data = i2c_get_clientdata(client);
 902         struct sensor_device_attribute_2 *sensor_attr =
 903             to_sensor_dev_attr_2(attr);
 904         int nr = sensor_attr->nr;
 905         int index = sensor_attr->index;
 906         unsigned long tmp;
 907
 908         if (strict_strtoul(buf, 10, &tmp) < 0)
 909                 return -EINVAL;
 910
 911         switch (nr) {
 912         case TEMP_PWM_ENABLE:
 913                 if ((tmp != 3) && (tmp != 4))
 914                         return -EINVAL;
 915                 tmp -= 3;
 916                 mutex_lock(&data->update_lock);
 917                 data->pwm_fcms[1] &= ~(1 << index);
 918                 data->pwm_fcms[1] |= tmp << index;
 919                 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
 920                 mutex_unlock(&data->update_lock);
 921                 break;
 922         case TEMP_PWM_FAN_MAP:
 923                 mutex_lock(&data->update_lock);
 924                 tmp = SENSORS_LIMIT(tmp, 0, 0xff);
 925                 w83795_write(client, W83795_REG_TFMR(index), tmp);
 926                 data->pwm_tfmr[index] = tmp;
 927                 mutex_unlock(&data->update_lock);
 928                 break;
 929         }
 930         return count;
 931 }
 932
 933 #define FANIN_TARGET   0
 934 #define FANIN_TOL      1
 935 static ssize_t
 936 show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
 937 {
 938         struct i2c_client *client = to_i2c_client(dev);
 939         struct w83795_data *data = i2c_get_clientdata(client);
 940         struct sensor_device_attribute_2 *sensor_attr =
 941             to_sensor_dev_attr_2(attr);
 942         int nr = sensor_attr->nr;
 943         int index = sensor_attr->index;
 944         u16 tmp = 0;
 945
 946         switch (nr) {
 947         case FANIN_TARGET:
 948                 tmp = fan_from_reg(data->target_speed[index]);
 949                 break;
 950         case FANIN_TOL:
 951                 tmp = data->tol_speed;
 952                 break;
 953         }
 954
 955         return sprintf(buf, "%u\n", tmp);
 956 }
 957
 958 static ssize_t
 959 store_fanin(struct device *dev, struct device_attribute *attr,
 960           const char *buf, size_t count)
 961 {
 962         struct i2c_client *client = to_i2c_client(dev);
 963         struct w83795_data *data = i2c_get_clientdata(client);
 964         struct sensor_device_attribute_2 *sensor_attr =
 965             to_sensor_dev_attr_2(attr);
 966         int nr = sensor_attr->nr;
 967         int index = sensor_attr->index;
 968         unsigned long val;
 969
 970         if (strict_strtoul(buf, 10, &val) < 0)
 971                 return -EINVAL;
 972
 973         mutex_lock(&data->update_lock);
 974         switch (nr) {
 975         case FANIN_TARGET:
 976                 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff));
 977                 w83795_write(client, W83795_REG_FTSH(index), (val >> 4) & 0xff);
 978                 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
 979                 data->target_speed[index] = val;
 980                 break;
 981         case FANIN_TOL:
 982                 val = SENSORS_LIMIT(val, 0, 0x3f);
 983                 w83795_write(client, W83795_REG_TFTS, val);
 984                 data->tol_speed = val;
 985                 break;
 986         }
 987         mutex_unlock(&data->update_lock);
 988
 989         return count;
 990 }
 991
 992
 993 static ssize_t
 994 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 995 {
 996         struct i2c_client *client = to_i2c_client(dev);
 997         struct w83795_data *data = i2c_get_clientdata(client);
 998         struct sensor_device_attribute_2 *sensor_attr =
 999             to_sensor_dev_attr_2(attr);
1000         int nr = sensor_attr->nr;
1001         int index = sensor_attr->index;
1002         long tmp = temp_from_reg(data->pwm_temp[index][nr]);
1003
1004         return sprintf(buf, "%ld\n", tmp);
1005 }
1006
1007 static ssize_t
1008 store_temp_pwm(struct device *dev, struct device_attribute *attr,
1009           const char *buf, size_t count)
1010 {
1011         struct i2c_client *client = to_i2c_client(dev);
1012         struct w83795_data *data = i2c_get_clientdata(client);
1013         struct sensor_device_attribute_2 *sensor_attr =
1014             to_sensor_dev_attr_2(attr);
1015         int nr = sensor_attr->nr;
1016         int index = sensor_attr->index;
1017         unsigned long val;
1018         u8 tmp;
1019
1020         if (strict_strtoul(buf, 10, &val) < 0)
1021                 return -EINVAL;
1022         val /= 1000;
1023
1024         mutex_lock(&data->update_lock);
1025         switch (nr) {
1026         case TEMP_PWM_TTTI:
1027                 val = SENSORS_LIMIT(val, 0, 0x7f);
1028                 w83795_write(client, W83795_REG_TTTI(index), val);
1029                 break;
1030         case TEMP_PWM_CTFS:
1031                 val = SENSORS_LIMIT(val, 0, 0x7f);
1032                 w83795_write(client, W83795_REG_CTFS(index), val);
1033                 break;
1034         case TEMP_PWM_HCT:
1035                 val = SENSORS_LIMIT(val, 0, 0x0f);
1036                 tmp = w83795_read(client, W83795_REG_HT(index));
1037                 tmp &= 0x0f;
1038                 tmp |= (val << 4) & 0xf0;
1039                 w83795_write(client, W83795_REG_HT(index), tmp);
1040                 break;
1041         case TEMP_PWM_HOT:
1042                 val = SENSORS_LIMIT(val, 0, 0x0f);
1043                 tmp = w83795_read(client, W83795_REG_HT(index));
1044                 tmp &= 0xf0;
1045                 tmp |= val & 0x0f;
1046                 w83795_write(client, W83795_REG_HT(index), tmp);
1047                 break;
1048         }
1049         data->pwm_temp[index][nr] = val;
1050         mutex_unlock(&data->update_lock);
1051
1052         return count;
1053 }
1054
1055 static ssize_t
1056 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
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
1065         return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1066 }
1067
1068 static ssize_t
1069 store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1070           const char *buf, size_t count)
1071 {
1072         struct i2c_client *client = to_i2c_client(dev);
1073         struct w83795_data *data = i2c_get_clientdata(client);
1074         struct sensor_device_attribute_2 *sensor_attr =
1075             to_sensor_dev_attr_2(attr);
1076         int nr = sensor_attr->nr;
1077         int index = sensor_attr->index;
1078         unsigned long val;
1079
1080         if (strict_strtoul(buf, 10, &val) < 0)
1081                 return -EINVAL;
1082
1083         mutex_lock(&data->update_lock);
1084         w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1085         data->sf4_reg[index][SF4_PWM][nr] = val;
1086         mutex_unlock(&data->update_lock);
1087
1088         return count;
1089 }
1090
1091 static ssize_t
1092 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1093 {
1094         struct i2c_client *client = to_i2c_client(dev);
1095         struct w83795_data *data = i2c_get_clientdata(client);
1096         struct sensor_device_attribute_2 *sensor_attr =
1097             to_sensor_dev_attr_2(attr);
1098         int nr = sensor_attr->nr;
1099         int index = sensor_attr->index;
1100
1101         return sprintf(buf, "%u\n",
1102                 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1103 }
1104
1105 static ssize_t
1106 store_sf4_temp(struct device *dev, struct device_attribute *attr,
1107           const char *buf, size_t count)
1108 {
1109         struct i2c_client *client = to_i2c_client(dev);
1110         struct w83795_data *data = i2c_get_clientdata(client);
1111         struct sensor_device_attribute_2 *sensor_attr =
1112             to_sensor_dev_attr_2(attr);
1113         int nr = sensor_attr->nr;
1114         int index = sensor_attr->index;
1115         unsigned long val;
1116
1117         if (strict_strtoul(buf, 10, &val) < 0)
1118                 return -EINVAL;
1119         val /= 1000;
1120
1121         mutex_lock(&data->update_lock);
1122         w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1123         data->sf4_reg[index][SF4_TEMP][nr] = val;
1124         mutex_unlock(&data->update_lock);
1125
1126         return count;
1127 }
1128
1129
1130 static ssize_t
1131 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
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 w83795_data *data = w83795_update_device(dev);
1138         long temp = temp_from_reg(data->temp[index][nr]);
1139
1140         if (TEMP_READ == nr)
1141                 temp += (data->temp_read_vrlsb[index] >> 6) * 250;
1142         return sprintf(buf, "%ld\n", temp);
1143 }
1144
1145 static ssize_t
1146 store_temp(struct device *dev, struct device_attribute *attr,
1147            const char *buf, size_t count)
1148 {
1149         struct sensor_device_attribute_2 *sensor_attr =
1150             to_sensor_dev_attr_2(attr);
1151         int nr = sensor_attr->nr;
1152         int index = sensor_attr->index;
1153         struct i2c_client *client = to_i2c_client(dev);
1154         struct w83795_data *data = i2c_get_clientdata(client);
1155         long tmp;
1156
1157         if (strict_strtol(buf, 10, &tmp) < 0)
1158                 return -EINVAL;
1159
1160         mutex_lock(&data->update_lock);
1161         data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1162         w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1163         mutex_unlock(&data->update_lock);
1164         return count;
1165 }
1166
1167
1168 static ssize_t
1169 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1170 {
1171         struct i2c_client *client = to_i2c_client(dev);
1172         struct w83795_data *data = i2c_get_clientdata(client);
1173         struct sensor_device_attribute_2 *sensor_attr =
1174             to_sensor_dev_attr_2(attr);
1175         int index = sensor_attr->index;
1176         u8 tmp;
1177
1178         if (data->enable_dts == 0)
1179                 return sprintf(buf, "%d\n", 0);
1180
1181         if ((data->has_dts >> index) & 0x01) {
1182                 if (data->enable_dts & 2)
1183                         tmp = 5;
1184                 else
1185                         tmp = 6;
1186         } else {
1187                 tmp = 0;
1188         }
1189
1190         return sprintf(buf, "%d\n", tmp);
1191 }
1192
1193 static ssize_t
1194 show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1195 {
1196         struct sensor_device_attribute_2 *sensor_attr =
1197             to_sensor_dev_attr_2(attr);
1198         int index = sensor_attr->index;
1199         struct w83795_data *data = w83795_update_device(dev);
1200         long temp = temp_from_reg(data->dts[index]);
1201
1202         temp += (data->dts_read_vrlsb[index] >> 6) * 250;
1203         return sprintf(buf, "%ld\n", temp);
1204 }
1205
1206 static ssize_t
1207 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1208 {
1209         struct sensor_device_attribute_2 *sensor_attr =
1210             to_sensor_dev_attr_2(attr);
1211         int nr = sensor_attr->nr;
1212         struct i2c_client *client = to_i2c_client(dev);
1213         struct w83795_data *data = i2c_get_clientdata(client);
1214         long temp = temp_from_reg(data->dts_ext[nr]);
1215
1216         return sprintf(buf, "%ld\n", temp);
1217 }
1218
1219 static ssize_t
1220 store_dts_ext(struct device *dev, struct device_attribute *attr,
1221            const char *buf, size_t count)
1222 {
1223         struct sensor_device_attribute_2 *sensor_attr =
1224             to_sensor_dev_attr_2(attr);
1225         int nr = sensor_attr->nr;
1226         struct i2c_client *client = to_i2c_client(dev);
1227         struct w83795_data *data = i2c_get_clientdata(client);
1228         long tmp;
1229
1230         if (strict_strtol(buf, 10, &tmp) < 0)
1231                 return -EINVAL;
1232
1233         mutex_lock(&data->update_lock);
1234         data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1235         w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1236         mutex_unlock(&data->update_lock);
1237         return count;
1238 }
1239
1240
1241 /*
1242         Type 3:  Thermal diode
1243         Type 4:  Thermistor
1244
1245         Temp5-6, default TR
1246         Temp1-4, default TD
1247 */
1248
1249 static ssize_t
1250 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1251 {
1252         struct i2c_client *client = to_i2c_client(dev);
1253         struct w83795_data *data = i2c_get_clientdata(client);
1254         struct sensor_device_attribute_2 *sensor_attr =
1255             to_sensor_dev_attr_2(attr);
1256         int index = sensor_attr->index;
1257         u8 tmp;
1258
1259         if (data->has_temp >> index & 0x01) {
1260                 if (data->temp_mode >> index & 0x01)
1261                         tmp = 3;
1262                 else
1263                         tmp = 4;
1264         } else {
1265                 tmp = 0;
1266         }
1267
1268         return sprintf(buf, "%d\n", tmp);
1269 }
1270
1271 static ssize_t
1272 store_temp_mode(struct device *dev, struct device_attribute *attr,
1273                 const char *buf, size_t count)
1274 {
1275         struct i2c_client *client = to_i2c_client(dev);
1276         struct w83795_data *data = i2c_get_clientdata(client);
1277         struct sensor_device_attribute_2 *sensor_attr =
1278             to_sensor_dev_attr_2(attr);
1279         int index = sensor_attr->index;
1280         unsigned long val;
1281         u8 tmp;
1282         u32 mask;
1283
1284         if (strict_strtoul(buf, 10, &val) < 0)
1285                 return -EINVAL;
1286         if ((val != 4) && (val != 3))
1287                 return -EINVAL;
1288         if ((index > 3) && (val == 3))
1289                 return -EINVAL;
1290
1291         mutex_lock(&data->update_lock);
1292         if (val == 3) {
1293                 val = TEMP_CTRL_TD;
1294                 data->has_temp |= 1 << index;
1295                 data->temp_mode |= 1 << index;
1296         } else if (val == 4) {
1297                 val = TEMP_CTRL_TR;
1298                 data->has_temp |= 1 << index;
1299                 tmp = 1 << index;
1300                 data->temp_mode &= ~tmp;
1301         }
1302
1303         if (index > 3)
1304                 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
1305         else
1306                 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1307
1308         mask = 0x03 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_SHIFT];
1309         tmp &= ~mask;
1310         tmp |= W83795_REG_TEMP_CTRL[index][val];
1311
1312         mask = 1 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_HASIN_SHIFT];
1313         data->has_in &= ~mask;
1314
1315         if (index > 3)
1316                 w83795_write(client, W83795_REG_TEMP_CTRL1, tmp);
1317         else
1318                 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1319
1320         mutex_unlock(&data->update_lock);
1321         return count;
1322 }
1323
1324
1325 /* show/store VIN */
1326 static ssize_t
1327 show_in(struct device *dev, struct device_attribute *attr, char *buf)
1328 {
1329         struct sensor_device_attribute_2 *sensor_attr =
1330             to_sensor_dev_attr_2(attr);
1331         int nr = sensor_attr->nr;
1332         int index = sensor_attr->index;
1333         struct w83795_data *data = w83795_update_device(dev);
1334         u16 val = data->in[index][nr];
1335         u8 lsb_idx;
1336
1337         switch (nr) {
1338         case IN_READ:
1339                 /* calculate this value again by sensors as sensors3.conf */
1340                 if ((index >= 17) &&
1341                     !((data->has_gain >> (index - 17)) & 1))
1342                         val *= 8;
1343                 break;
1344         case IN_MAX:
1345         case IN_LOW:
1346                 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1347                 val <<= 2;
1348                 val |= (data->in_lsb[lsb_idx][nr] >>
1349                         IN_LSB_SHIFT_IDX[lsb_idx][IN_LSB_SHIFT]) & 0x03;
1350                 if ((index >= 17) &&
1351                     !((data->has_gain >> (index - 17)) & 1))
1352                         val *= 8;
1353                 break;
1354         }
1355         val = in_from_reg(index, val);
1356
1357         return sprintf(buf, "%d\n", val);
1358 }
1359
1360 static ssize_t
1361 store_in(struct device *dev, struct device_attribute *attr,
1362          const char *buf, size_t count)
1363 {
1364         struct sensor_device_attribute_2 *sensor_attr =
1365             to_sensor_dev_attr_2(attr);
1366         int nr = sensor_attr->nr;
1367         int index = sensor_attr->index;
1368         struct i2c_client *client = to_i2c_client(dev);
1369         struct w83795_data *data = i2c_get_clientdata(client);
1370         unsigned long val;
1371         u8 tmp;
1372         u8 lsb_idx;
1373
1374         if (strict_strtoul(buf, 10, &val) < 0)
1375                 return -EINVAL;
1376         val = in_to_reg(index, val);
1377
1378         if ((index >= 17) &&
1379             !((data->has_gain >> (index - 17)) & 1))
1380                 val /= 8;
1381         val = SENSORS_LIMIT(val, 0, 0x3FF);
1382         mutex_lock(&data->update_lock);
1383
1384         lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1385         tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1386         tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1387         tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1388         w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1389         data->in_lsb[lsb_idx][nr] = tmp;
1390
1391         tmp = (val >> 2) & 0xff;
1392         w83795_write(client, W83795_REG_IN[index][nr], tmp);
1393         data->in[index][nr] = tmp;
1394
1395         mutex_unlock(&data->update_lock);
1396         return count;
1397 }
1398
1399
1400 static ssize_t
1401 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1402 {
1403         struct sensor_device_attribute_2 *sensor_attr =
1404             to_sensor_dev_attr_2(attr);
1405         int nr = sensor_attr->nr;
1406         struct i2c_client *client = to_i2c_client(dev);
1407         struct w83795_data *data = i2c_get_clientdata(client);
1408         u16 val = data->setup_pwm[nr];
1409
1410         switch (nr) {
1411         case SETUP_PWM_UPTIME:
1412         case SETUP_PWM_DOWNTIME:
1413                 val = time_from_reg(val);
1414                 break;
1415         }
1416
1417         return sprintf(buf, "%d\n", val);
1418 }
1419
1420 static ssize_t
1421 store_sf_setup(struct device *dev, struct device_attribute *attr,
1422          const char *buf, size_t count)
1423 {
1424         struct sensor_device_attribute_2 *sensor_attr =
1425             to_sensor_dev_attr_2(attr);
1426         int nr = sensor_attr->nr;
1427         struct i2c_client *client = to_i2c_client(dev);
1428         struct w83795_data *data = i2c_get_clientdata(client);
1429         unsigned long val;
1430
1431         if (strict_strtoul(buf, 10, &val) < 0)
1432                 return -EINVAL;
1433
1434         switch (nr) {
1435         case SETUP_PWM_DEFAULT:
1436                 val = SENSORS_LIMIT(val, 0, 0xff);
1437                 break;
1438         case SETUP_PWM_UPTIME:
1439         case SETUP_PWM_DOWNTIME:
1440                 val = time_to_reg(val);
1441                 if (val == 0)
1442                         return -EINVAL;
1443                 break;
1444         }
1445
1446         mutex_lock(&data->update_lock);
1447         data->setup_pwm[nr] = val;
1448         w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1449         mutex_unlock(&data->update_lock);
1450         return count;
1451 }
1452
1453
1454 #define NOT_USED                        -1
1455
1456 /* Don't change the attribute order, _max and _min are accessed by index
1457  * somewhere else in the code */
1458 #define SENSOR_ATTR_IN(index) {                                         \
1459         SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL,        \
1460                 IN_READ, index), \
1461         SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in,      \
1462                 store_in, IN_MAX, index),                               \
1463         SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in,      \
1464                 store_in, IN_LOW, index),                               \
1465         SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep,      \
1466                 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1467         SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO,              \
1468                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1469                 index + ((index > 14) ? 1 : 0)) }
1470
1471 #define SENSOR_ATTR_FAN(index) {                                        \
1472         SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan,            \
1473                 NULL, FAN_INPUT, index - 1), \
1474         SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO,              \
1475                 show_fan, store_fan_min, FAN_MIN, index - 1),   \
1476         SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep,     \
1477                 NULL, ALARM_STATUS, index + 31),                        \
1478         SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO,             \
1479                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) }
1480
1481 #define SENSOR_ATTR_PWM(index) {                                        \
1482         SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm,          \
1483                 store_pwm, PWM_OUTPUT, index - 1),                      \
1484         SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO,          \
1485                 show_pwm, store_pwm, PWM_NONSTOP, index - 1),           \
1486         SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO,            \
1487                 show_pwm, store_pwm, PWM_START, index - 1),             \
1488         SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO,        \
1489                 show_pwm, store_pwm, PWM_STOP_TIME, index - 1),  \
1490         SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO,     \
1491                 show_pwm, store_pwm, PWM_FREQ, index - 1),       \
1492         SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO,           \
1493                 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
1494         SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
1495                 show_fanin, store_fanin, FANIN_TARGET, index - 1) }
1496
1497 #define SENSOR_ATTR_DTS(index) {                                        \
1498         SENSOR_ATTR_2(temp##index##_type, S_IRUGO ,             \
1499                 show_dts_mode, NULL, NOT_USED, index - 7),      \
1500         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts,           \
1501                 NULL, NOT_USED, index - 7),                             \
1502         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \
1503                 store_dts_ext, DTS_CRIT, NOT_USED),                     \
1504         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1505                 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED),  \
1506         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1507                 store_dts_ext, DTS_WARN, NOT_USED),                     \
1508         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1509                 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED),  \
1510         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1511                 show_alarm_beep, NULL, ALARM_STATUS, index + 17),       \
1512         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1513                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
1514
1515 #define SENSOR_ATTR_TEMP(index) {                                       \
1516         SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR,            \
1517                 show_temp_mode, store_temp_mode, NOT_USED, index - 1),  \
1518         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp,          \
1519                 NULL, TEMP_READ, index - 1),                            \
1520         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \
1521                 store_temp, TEMP_CRIT, index - 1),                      \
1522         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1523                 show_temp, store_temp, TEMP_CRIT_HYST, index - 1),      \
1524         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp,  \
1525                 store_temp, TEMP_WARN, index - 1),                      \
1526         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1527                 show_temp, store_temp, TEMP_WARN_HYST, index - 1),      \
1528         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1529                 show_alarm_beep, NULL, ALARM_STATUS,                    \
1530                 index + (index > 4 ? 11 : 17)),                         \
1531         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1532                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1533                 index + (index > 4 ? 11 : 17)),                         \
1534         SENSOR_ATTR_2(temp##index##_source_sel, S_IWUSR | S_IRUGO,      \
1535                 show_temp_src, store_temp_src, NOT_USED, index - 1),    \
1536         SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO,      \
1537                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1538                 TEMP_PWM_ENABLE, index - 1),                            \
1539         SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1540                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1541                 TEMP_PWM_FAN_MAP, index - 1),                           \
1542         SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO,         \
1543                 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1544         SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO,            \
1545                 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1546         SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO,       \
1547                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1548         SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO,  \
1549                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1550         SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1551                 show_sf4_pwm, store_sf4_pwm, 0, index - 1),             \
1552         SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1553                 show_sf4_pwm, store_sf4_pwm, 1, index - 1),             \
1554         SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1555                 show_sf4_pwm, store_sf4_pwm, 2, index - 1),             \
1556         SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1557                 show_sf4_pwm, store_sf4_pwm, 3, index - 1),             \
1558         SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1559                 show_sf4_pwm, store_sf4_pwm, 4, index - 1),             \
1560         SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1561                 show_sf4_pwm, store_sf4_pwm, 5, index - 1),             \
1562         SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1563                 show_sf4_pwm, store_sf4_pwm, 6, index - 1),             \
1564         SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1565                 show_sf4_temp, store_sf4_temp, 0, index - 1),           \
1566         SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1567                 show_sf4_temp, store_sf4_temp, 1, index - 1),           \
1568         SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1569                 show_sf4_temp, store_sf4_temp, 2, index - 1),           \
1570         SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1571                 show_sf4_temp, store_sf4_temp, 3, index - 1),           \
1572         SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1573                 show_sf4_temp, store_sf4_temp, 4, index - 1),           \
1574         SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1575                 show_sf4_temp, store_sf4_temp, 5, index - 1),           \
1576         SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1577                 show_sf4_temp, store_sf4_temp, 6, index - 1) }
1578
1579
1580 static struct sensor_device_attribute_2 w83795_in[][5] = {
1581         SENSOR_ATTR_IN(0),
1582         SENSOR_ATTR_IN(1),
1583         SENSOR_ATTR_IN(2),
1584         SENSOR_ATTR_IN(3),
1585         SENSOR_ATTR_IN(4),
1586         SENSOR_ATTR_IN(5),
1587         SENSOR_ATTR_IN(6),
1588         SENSOR_ATTR_IN(7),
1589         SENSOR_ATTR_IN(8),
1590         SENSOR_ATTR_IN(9),
1591         SENSOR_ATTR_IN(10),
1592         SENSOR_ATTR_IN(11),
1593         SENSOR_ATTR_IN(12),
1594         SENSOR_ATTR_IN(13),
1595         SENSOR_ATTR_IN(14),
1596         SENSOR_ATTR_IN(15),
1597         SENSOR_ATTR_IN(16),
1598         SENSOR_ATTR_IN(17),
1599         SENSOR_ATTR_IN(18),
1600         SENSOR_ATTR_IN(19),
1601         SENSOR_ATTR_IN(20),
1602 };
1603
1604 static const struct sensor_device_attribute_2 w83795_fan[][4] = {
1605         SENSOR_ATTR_FAN(1),
1606         SENSOR_ATTR_FAN(2),
1607         SENSOR_ATTR_FAN(3),
1608         SENSOR_ATTR_FAN(4),
1609         SENSOR_ATTR_FAN(5),
1610         SENSOR_ATTR_FAN(6),
1611         SENSOR_ATTR_FAN(7),
1612         SENSOR_ATTR_FAN(8),
1613         SENSOR_ATTR_FAN(9),
1614         SENSOR_ATTR_FAN(10),
1615         SENSOR_ATTR_FAN(11),
1616         SENSOR_ATTR_FAN(12),
1617         SENSOR_ATTR_FAN(13),
1618         SENSOR_ATTR_FAN(14),
1619 };
1620
1621 static const struct sensor_device_attribute_2 w83795_temp[][29] = {
1622         SENSOR_ATTR_TEMP(1),
1623         SENSOR_ATTR_TEMP(2),
1624         SENSOR_ATTR_TEMP(3),
1625         SENSOR_ATTR_TEMP(4),
1626         SENSOR_ATTR_TEMP(5),
1627         SENSOR_ATTR_TEMP(6),
1628 };
1629
1630 static const struct sensor_device_attribute_2 w83795_dts[][8] = {
1631         SENSOR_ATTR_DTS(7),
1632         SENSOR_ATTR_DTS(8),
1633         SENSOR_ATTR_DTS(9),
1634         SENSOR_ATTR_DTS(10),
1635         SENSOR_ATTR_DTS(11),
1636         SENSOR_ATTR_DTS(12),
1637         SENSOR_ATTR_DTS(13),
1638         SENSOR_ATTR_DTS(14),
1639 };
1640
1641 static const struct sensor_device_attribute_2 w83795_pwm[][7] = {
1642         SENSOR_ATTR_PWM(1),
1643         SENSOR_ATTR_PWM(2),
1644         SENSOR_ATTR_PWM(3),
1645         SENSOR_ATTR_PWM(4),
1646         SENSOR_ATTR_PWM(5),
1647         SENSOR_ATTR_PWM(6),
1648         SENSOR_ATTR_PWM(7),
1649         SENSOR_ATTR_PWM(8),
1650 };
1651
1652 static const struct sensor_device_attribute_2 sda_single_files[] = {
1653         SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep,
1654                       store_chassis_clear, ALARM_STATUS, 46),
1655         SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
1656                       store_beep, BEEP_ENABLE, 47),
1657         SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1658                 store_fanin, FANIN_TOL, NOT_USED),
1659         SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1660                       store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1661         SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1662                       store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1663         SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1664                       store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1665 };
1666
1667 /*
1668  * Driver interface
1669  */
1670
1671 static void w83795_init_client(struct i2c_client *client)
1672 {
1673         struct w83795_data *data = i2c_get_clientdata(client);
1674         static const u16 clkin[4] = {   /* in kHz */
1675                 14318, 24000, 33333, 48000
1676         };
1677         u8 config;
1678
1679         if (reset)
1680                 w83795_write(client, W83795_REG_CONFIG, 0x80);
1681
1682         /* Start monitoring if needed */
1683         config = w83795_read(client, W83795_REG_CONFIG);
1684         if (!(config & W83795_REG_CONFIG_START)) {
1685                 dev_info(&client->dev, "Enabling monitoring operations\n");
1686                 w83795_write(client, W83795_REG_CONFIG,
1687                              config | W83795_REG_CONFIG_START);
1688         }
1689
1690         data->clkin = clkin[(config >> 3) & 0x3];
1691         dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin);
1692 }
1693
1694 static int w83795_get_device_id(struct i2c_client *client)
1695 {
1696         int device_id;
1697
1698         device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID);
1699
1700         /* Special case for rev. A chips; can't be checked first because later
1701            revisions emulate this for compatibility */
1702         if (device_id < 0 || (device_id & 0xf0) != 0x50) {
1703                 int alt_id;
1704
1705                 alt_id = i2c_smbus_read_byte_data(client,
1706                                                   W83795_REG_DEVICEID_A);
1707                 if (alt_id == 0x50)
1708                         device_id = alt_id;
1709         }
1710
1711         return device_id;
1712 }
1713
1714 /* Return 0 if detection is successful, -ENODEV otherwise */
1715 static int w83795_detect(struct i2c_client *client,
1716                          struct i2c_board_info *info)
1717 {
1718         int bank, vendor_id, device_id, expected, i2c_addr, config;
1719         struct i2c_adapter *adapter = client->adapter;
1720         unsigned short address = client->addr;
1721         const char *chip_name;
1722
1723         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1724                 return -ENODEV;
1725         bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1726         if (bank < 0 || (bank & 0x7c)) {
1727                 dev_dbg(&adapter->dev,
1728                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1729                         address, "bank");
1730                 return -ENODEV;
1731         }
1732
1733         /* Check Nuvoton vendor ID */
1734         vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID);
1735         expected = bank & 0x80 ? 0x5c : 0xa3;
1736         if (vendor_id != expected) {
1737                 dev_dbg(&adapter->dev,
1738                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1739                         address, "vendor id");
1740                 return -ENODEV;
1741         }
1742
1743         /* Check device ID */
1744         device_id = w83795_get_device_id(client) |
1745                     (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8);
1746         if ((device_id >> 4) != 0x795) {
1747                 dev_dbg(&adapter->dev,
1748                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1749                         address, "device id\n");
1750                 return -ENODEV;
1751         }
1752
1753         /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1754            should match */
1755         if ((bank & 0x07) == 0) {
1756                 i2c_addr = i2c_smbus_read_byte_data(client,
1757                                                     W83795_REG_I2C_ADDR);
1758                 if ((i2c_addr & 0x7f) != address) {
1759                         dev_dbg(&adapter->dev,
1760                                 "w83795: Detection failed at addr 0x%02hx, "
1761                                 "check %s\n", address, "i2c addr");
1762                         return -ENODEV;
1763                 }
1764         }
1765
1766         /* Check 795 chip type: 795G or 795ADG
1767            Usually we don't write to chips during detection, but here we don't
1768            quite have the choice; hopefully it's OK, we are about to return
1769            success anyway */
1770         if ((bank & 0x07) != 0)
1771                 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
1772                                           bank & ~0x07);
1773         config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG);
1774         if (config & W83795_REG_CONFIG_CONFIG48)
1775                 chip_name = "w83795adg";
1776         else
1777                 chip_name = "w83795g";
1778
1779         strlcpy(info->type, chip_name, I2C_NAME_SIZE);
1780         dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name,
1781                  'A' + (device_id & 0xf), address);
1782
1783         return 0;
1784 }
1785
1786 static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
1787                                const struct device_attribute *))
1788 {
1789         struct w83795_data *data = dev_get_drvdata(dev);
1790         int err, i, j;
1791
1792         for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
1793                 if (!(data->has_in & (1 << i)))
1794                         continue;
1795                 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) {
1796                         err = fn(dev, &w83795_in[i][j].dev_attr);
1797                         if (err)
1798                                 return err;
1799                 }
1800         }
1801
1802         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
1803                 if (!(data->has_fan & (1 << i)))
1804                         continue;
1805                 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) {
1806                         err = fn(dev, &w83795_fan[i][j].dev_attr);
1807                         if (err)
1808                                 return err;
1809                 }
1810         }
1811
1812         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1813                 err = fn(dev, &sda_single_files[i].dev_attr);
1814                 if (err)
1815                         return err;
1816         }
1817
1818         for (i = 0; i < data->has_pwm; i++) {
1819                 for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) {
1820                         err = fn(dev, &w83795_pwm[i][j].dev_attr);
1821                         if (err)
1822                                 return err;
1823                 }
1824         }
1825
1826         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
1827                 if (!(data->has_temp & (1 << i)))
1828                         continue;
1829                 for (j = 0; j < ARRAY_SIZE(w83795_temp[0]); j++) {
1830                         err = fn(dev, &w83795_temp[i][j].dev_attr);
1831                         if (err)
1832                                 return err;
1833                 }
1834         }
1835
1836         if (data->enable_dts != 0) {
1837                 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
1838                         if (!(data->has_dts & (1 << i)))
1839                                 continue;
1840                         for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) {
1841                                 err = fn(dev, &w83795_dts[i][j].dev_attr);
1842                                 if (err)
1843                                         return err;
1844                         }
1845                 }
1846         }
1847
1848         return 0;
1849 }
1850
1851 /* We need a wrapper that fits in w83795_handle_files */
1852 static int device_remove_file_wrapper(struct device *dev,
1853                                       const struct device_attribute *attr)
1854 {
1855         device_remove_file(dev, attr);
1856         return 0;
1857 }
1858
1859 static void w83795_check_dynamic_in_limits(struct i2c_client *client)
1860 {
1861         struct w83795_data *data = i2c_get_clientdata(client);
1862         u8 vid_ctl;
1863         int i, err_max, err_min;
1864
1865         vid_ctl = w83795_read(client, W83795_REG_VID_CTRL);
1866
1867         /* Return immediately if VRM isn't configured */
1868         if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07)
1869                 return;
1870
1871         data->has_dyn_in = (vid_ctl >> 3) & 0x07;
1872         for (i = 0; i < 2; i++) {
1873                 if (!(data->has_dyn_in & (1 << i)))
1874                         continue;
1875
1876                 /* Voltage limits in dynamic mode, switch to read-only */
1877                 err_max = sysfs_chmod_file(&client->dev.kobj,
1878                                            &w83795_in[i][2].dev_attr.attr,
1879                                            S_IRUGO);
1880                 err_min = sysfs_chmod_file(&client->dev.kobj,
1881                                            &w83795_in[i][3].dev_attr.attr,
1882                                            S_IRUGO);
1883                 if (err_max || err_min)
1884                         dev_warn(&client->dev, "Failed to set in%d limits "
1885                                  "read-only (%d, %d)\n", i, err_max, err_min);
1886                 else
1887                         dev_info(&client->dev, "in%d limits set dynamically "
1888                                  "from VID\n", i);
1889         }
1890 }
1891
1892 /* Check pins that can be used for either temperature or voltage monitoring */
1893 static void w83795_apply_temp_config(struct w83795_data *data, u8 config,
1894                                      int temp_chan, int in_chan)
1895 {
1896         /* config is a 2-bit value */
1897         switch (config) {
1898         case 0x2: /* Voltage monitoring */
1899                 data->has_in |= 1 << in_chan;
1900                 break;
1901         case 0x1: /* Thermal diode */
1902                 if (temp_chan >= 4)
1903                         break;
1904                 data->temp_mode |= 1 << temp_chan;
1905                 /* fall through */
1906         case 0x3: /* Thermistor */
1907                 data->has_temp |= 1 << temp_chan;
1908                 break;
1909         }
1910 }
1911
1912 static int w83795_probe(struct i2c_client *client,
1913                         const struct i2c_device_id *id)
1914 {
1915         int i;
1916         u8 tmp;
1917         struct device *dev = &client->dev;
1918         struct w83795_data *data;
1919         int err;
1920
1921         data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL);
1922         if (!data) {
1923                 err = -ENOMEM;
1924                 goto exit;
1925         }
1926
1927         i2c_set_clientdata(client, data);
1928         data->chip_type = id->driver_data;
1929         data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1930         mutex_init(&data->update_lock);
1931
1932         /* Initialize the chip */
1933         w83795_init_client(client);
1934
1935         /* Check which voltages and fans are present */
1936         data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1)
1937                      | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8);
1938         data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1)
1939                       | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8);
1940
1941         /* Check which analog temperatures and extra voltages are present */
1942         tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
1943         if (tmp & 0x20)
1944                 data->enable_dts = 1;
1945         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16);
1946         w83795_apply_temp_config(data, tmp & 0x3, 4, 15);
1947         tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1948         w83795_apply_temp_config(data, tmp >> 6, 3, 20);
1949         w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19);
1950         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18);
1951         w83795_apply_temp_config(data, tmp & 0x3, 0, 17);
1952
1953         /* Check DTS enable status */
1954         if (data->enable_dts) {
1955                 if (1 & w83795_read(client, W83795_REG_DTSC))
1956                         data->enable_dts |= 2;
1957                 data->has_dts = w83795_read(client, W83795_REG_DTSE);
1958         }
1959
1960         /* Report PECI Tbase values */
1961         if (data->enable_dts == 1) {
1962                 for (i = 0; i < 8; i++) {
1963                         if (!(data->has_dts & (1 << i)))
1964                                 continue;
1965                         tmp = w83795_read(client, W83795_REG_PECI_TBASE(i));
1966                         dev_info(&client->dev,
1967                                  "PECI agent %d Tbase temperature: %u\n",
1968                                  i + 1, (unsigned int)tmp & 0x7f);
1969                 }
1970         }
1971
1972         /* First update the voltages measured value and limits */
1973         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
1974                 if (!(data->has_in & (1 << i)))
1975                         continue;
1976                 data->in[i][IN_MAX] =
1977                         w83795_read(client, W83795_REG_IN[i][IN_MAX]);
1978                 data->in[i][IN_LOW] =
1979                         w83795_read(client, W83795_REG_IN[i][IN_LOW]);
1980                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
1981                 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
1982                 data->in[i][IN_READ] = tmp;
1983         }
1984         for (i = 0; i < IN_LSB_REG_NUM; i++) {
1985                 if ((i == 2 && data->chip_type == w83795adg) ||
1986                     (i >= 4 && !(data->has_in & (1 << (i + 11)))))
1987                         continue;
1988                 data->in_lsb[i][IN_MAX] =
1989                         w83795_read(client, IN_LSB_REG(i, IN_MAX));
1990                 data->in_lsb[i][IN_LOW] =
1991                         w83795_read(client, IN_LSB_REG(i, IN_LOW));
1992         }
1993         data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
1994
1995         /* First update fan and limits */
1996         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
1997                 /* Each register contains LSB for 2 fans, but we want to
1998                  * read it only once to save time */
1999                 if ((i & 1) == 0 && (data->has_fan & (3 << i)))
2000                         tmp = w83795_read(client, W83795_REG_FAN_MIN_LSB(i));
2001
2002                 if (!(data->has_fan & (1 << i)))
2003                         continue;
2004                 data->fan_min[i] =
2005                         w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
2006                 data->fan_min[i] |=
2007                         (tmp >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F;
2008                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
2009                 data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4;
2010         }
2011
2012         /* temperature and limits */
2013         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
2014                 if (!(data->has_temp & (1 << i)))
2015                         continue;
2016                 data->temp[i][TEMP_CRIT] =
2017                         w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT]);
2018                 data->temp[i][TEMP_CRIT_HYST] =
2019                         w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT_HYST]);
2020                 data->temp[i][TEMP_WARN] =
2021                         w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN]);
2022                 data->temp[i][TEMP_WARN_HYST] =
2023                         w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN_HYST]);
2024                 data->temp[i][TEMP_READ] =
2025                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
2026                 data->temp_read_vrlsb[i] =
2027                         w83795_read(client, W83795_REG_VRLSB);
2028         }
2029
2030         /* dts temperature and limits */
2031         if (data->enable_dts != 0) {
2032                 data->dts_ext[DTS_CRIT] =
2033                         w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT));
2034                 data->dts_ext[DTS_CRIT_HYST] =
2035                         w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT_HYST));
2036                 data->dts_ext[DTS_WARN] =
2037                         w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN));
2038                 data->dts_ext[DTS_WARN_HYST] =
2039                         w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN_HYST));
2040                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
2041                         if (!(data->has_dts & (1 << i)))
2042                                 continue;
2043                         data->dts[i] = w83795_read(client, W83795_REG_DTS(i));
2044                         data->dts_read_vrlsb[i] =
2045                                 w83795_read(client, W83795_REG_VRLSB);
2046                 }
2047         }
2048
2049         /* First update temp source selction */
2050         for (i = 0; i < 3; i++)
2051                 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
2052
2053         /* pwm and smart fan */
2054         if (data->chip_type == w83795g)
2055                 data->has_pwm = 8;
2056         else
2057                 data->has_pwm = 2;
2058         data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
2059         data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
2060         for (i = 0; i < W83795_REG_TEMP_NUM; i++)
2061                 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
2062         data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
2063         for (i = 0; i < data->has_pwm; i++) {
2064                 for (tmp = 0; tmp < 5; tmp++) {
2065                         data->pwm[i][tmp] =
2066                                 w83795_read(client, W83795_REG_PWM(i, tmp));
2067                 }
2068         }
2069         for (i = 0; i < 8; i++) {
2070                 data->target_speed[i] =
2071                         w83795_read(client, W83795_REG_FTSH(i)) << 4;
2072                 data->target_speed[i] |=
2073                         w83795_read(client, W83795_REG_FTSL(i)) >> 4;
2074         }
2075         data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
2076
2077         for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
2078                 data->pwm_temp[i][TEMP_PWM_TTTI] =
2079                         w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
2080                 data->pwm_temp[i][TEMP_PWM_CTFS] =
2081                         w83795_read(client, W83795_REG_CTFS(i));
2082                 tmp = w83795_read(client, W83795_REG_HT(i));
2083                 data->pwm_temp[i][TEMP_PWM_HCT] = (tmp >> 4) & 0x0f;
2084                 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
2085         }
2086         for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
2087                 for (tmp = 0; tmp < 7; tmp++) {
2088                         data->sf4_reg[i][SF4_TEMP][tmp] =
2089                                 w83795_read(client,
2090                                             W83795_REG_SF4_TEMP(i, tmp));
2091                         data->sf4_reg[i][SF4_PWM][tmp] =
2092                                 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
2093                 }
2094         }
2095
2096         /* Setup PWM Register */
2097         for (i = 0; i < 3; i++) {
2098                 data->setup_pwm[i] =
2099                         w83795_read(client, W83795_REG_SETUP_PWM(i));
2100         }
2101
2102         /* alarm and beep */
2103         for (i = 0; i < ALARM_BEEP_REG_NUM; i++) {
2104                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
2105                 data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i));
2106         }
2107
2108         err = w83795_handle_files(dev, device_create_file);
2109         if (err)
2110                 goto exit_remove;
2111
2112         if (data->chip_type == w83795g)
2113                 w83795_check_dynamic_in_limits(client);
2114
2115         data->hwmon_dev = hwmon_device_register(dev);
2116         if (IS_ERR(data->hwmon_dev)) {
2117                 err = PTR_ERR(data->hwmon_dev);
2118                 goto exit_remove;
2119         }
2120
2121         return 0;
2122
2123 exit_remove:
2124         w83795_handle_files(dev, device_remove_file_wrapper);
2125         kfree(data);
2126 exit:
2127         return err;
2128 }
2129
2130 static int w83795_remove(struct i2c_client *client)
2131 {
2132         struct w83795_data *data = i2c_get_clientdata(client);
2133
2134         hwmon_device_unregister(data->hwmon_dev);
2135         w83795_handle_files(&client->dev, device_remove_file_wrapper);
2136         kfree(data);
2137
2138         return 0;
2139 }
2140
2141
2142 static const struct i2c_device_id w83795_id[] = {
2143         { "w83795g", w83795g },
2144         { "w83795adg", w83795adg },
2145         { }
2146 };
2147 MODULE_DEVICE_TABLE(i2c, w83795_id);
2148
2149 static struct i2c_driver w83795_driver = {
2150         .driver = {
2151                    .name = "w83795",
2152         },
2153         .probe          = w83795_probe,
2154         .remove         = w83795_remove,
2155         .id_table       = w83795_id,
2156
2157         .class          = I2C_CLASS_HWMON,
2158         .detect         = w83795_detect,
2159         .address_list   = normal_i2c,
2160 };
2161
2162 static int __init sensors_w83795_init(void)
2163 {
2164         return i2c_add_driver(&w83795_driver);
2165 }
2166
2167 static void __exit sensors_w83795_exit(void)
2168 {
2169         i2c_del_driver(&w83795_driver);
2170 }
2171
2172 MODULE_AUTHOR("Wei Song");
2173 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2174 MODULE_LICENSE("GPL");
2175
2176 module_init(sensors_w83795_init);
2177 module_exit(sensors_w83795_exit);