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 #define VRLSB_SHIFT                     6
 131
 132 static const u8 W83795_REG_IN_HL_LSB[] = {
 133         0x8e,   /* VSEN1-4 */
 134         0x90,   /* VSEN5-8 */
 135         0x92,   /* VSEN9-11 */
 136         0x94,   /* VTT, 3VDD, 3VSB, 3VBAT */
 137         0xa8,   /* VSEN12 */
 138         0xac,   /* VSEN13 */
 139         0x98,   /* VSEN14 */
 140         0x9c,   /* VSEN15 */
 141         0xa0,   /* VSEN16 */
 142         0xa4,   /* VSEN17 */
 143 };
 144
 145 #define IN_LSB_REG(index, type) \
 146         (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
 147         : (W83795_REG_IN_HL_LSB[(index)] + 1))
 148
 149 #define IN_LSB_REG_NUM                  10
 150
 151 #define IN_LSB_SHIFT                    0
 152 #define IN_LSB_IDX                      1
 153 static const u8 IN_LSB_SHIFT_IDX[][2] = {
 154         /* High/Low LSB shift, LSB No. */
 155         {0x00, 0x00},   /* VSEN1 */
 156         {0x02, 0x00},   /* VSEN2 */
 157         {0x04, 0x00},   /* VSEN3 */
 158         {0x06, 0x00},   /* VSEN4 */
 159         {0x00, 0x01},   /* VSEN5 */
 160         {0x02, 0x01},   /* VSEN6 */
 161         {0x04, 0x01},   /* VSEN7 */
 162         {0x06, 0x01},   /* VSEN8 */
 163         {0x00, 0x02},   /* VSEN9 */
 164         {0x02, 0x02},   /* VSEN10 */
 165         {0x04, 0x02},   /* VSEN11 */
 166         {0x00, 0x03},   /* VTT */
 167         {0x02, 0x03},   /* 3VDD */
 168         {0x04, 0x03},   /* 3VSB */
 169         {0x06, 0x03},   /* VBAT */
 170         {0x06, 0x04},   /* VSEN12 */
 171         {0x06, 0x05},   /* VSEN13 */
 172         {0x06, 0x06},   /* VSEN14 */
 173         {0x06, 0x07},   /* VSEN15 */
 174         {0x06, 0x08},   /* VSEN16 */
 175         {0x06, 0x09},   /* VSEN17 */
 176 };
 177
 178
 179 /* 3VDD, 3VSB, VBAT * 0.006 */
 180 #define REST_VLT_BEGIN                  12  /* the 13th volt to 15th */
 181 #define REST_VLT_END                    14  /* the 13th volt to 15th */
 182
 183 #define W83795_REG_FAN(index)           (0x2E + (index))
 184 #define W83795_REG_FAN_MIN_HL(index)    (0xB6 + (index))
 185 #define W83795_REG_FAN_MIN_LSB(index)   (0xC4 + (index) / 2)
 186 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
 187         (((index) % 1) ? 4 : 0)
 188
 189 #define W83795_REG_VID_CTRL             0x6A
 190
 191 #define ALARM_BEEP_REG_NUM              6
 192 #define W83795_REG_ALARM(index)         (0x41 + (index))
 193 #define W83795_REG_BEEP(index)          (0x50 + (index))
 194
 195 #define W83795_REG_CLR_CHASSIS          0x4D
 196
 197
 198 #define W83795_REG_TEMP_NUM             6
 199 #define W83795_REG_FCMS1                0x201
 200 #define W83795_REG_FCMS2                0x208
 201 #define W83795_REG_TFMR(index)          (0x202 + (index))
 202 #define W83795_REG_FOMC                 0x20F
 203
 204 #define W83795_REG_TSS(index)           (0x209 + (index))
 205
 206 #define PWM_OUTPUT                      0
 207 #define PWM_START                       1
 208 #define PWM_NONSTOP                     2
 209 #define PWM_STOP_TIME                   3
 210 #define PWM_FREQ                        4
 211 #define W83795_REG_PWM(index, nr) \
 212         (((nr) == 0 ? 0x210 : \
 213           (nr) == 1 ? 0x220 : \
 214           (nr) == 2 ? 0x228 : \
 215           (nr) == 3 ? 0x230 : 0x218) + (index))
 216
 217 #define W83795_REG_FTSH(index)          (0x240 + (index) * 2)
 218 #define W83795_REG_FTSL(index)          (0x241 + (index) * 2)
 219 #define W83795_REG_TFTS                 0x250
 220
 221 #define TEMP_PWM_TTTI                   0
 222 #define TEMP_PWM_CTFS                   1
 223 #define TEMP_PWM_HCT                    2
 224 #define TEMP_PWM_HOT                    3
 225 #define W83795_REG_TTTI(index)          (0x260 + (index))
 226 #define W83795_REG_CTFS(index)          (0x268 + (index))
 227 #define W83795_REG_HT(index)            (0x270 + (index))
 228
 229 #define SF4_TEMP                        0
 230 #define SF4_PWM                         1
 231 #define W83795_REG_SF4_TEMP(temp_num, index) \
 232         (0x280 + 0x10 * (temp_num) + (index))
 233 #define W83795_REG_SF4_PWM(temp_num, index) \
 234         (0x288 + 0x10 * (temp_num) + (index))
 235
 236 #define W83795_REG_DTSC                 0x301
 237 #define W83795_REG_DTSE                 0x302
 238 #define W83795_REG_DTS(index)           (0x26 + (index))
 239 #define W83795_REG_PECI_TBASE(index)    (0x320 + (index))
 240
 241 #define DTS_CRIT                        0
 242 #define DTS_CRIT_HYST                   1
 243 #define DTS_WARN                        2
 244 #define DTS_WARN_HYST                   3
 245 #define W83795_REG_DTS_EXT(index)       (0xB2 + (index))
 246
 247 #define SETUP_PWM_DEFAULT               0
 248 #define SETUP_PWM_UPTIME                1
 249 #define SETUP_PWM_DOWNTIME              2
 250 #define W83795_REG_SETUP_PWM(index)    (0x20C + (index))
 251
 252 static inline u16 in_from_reg(u8 index, u16 val)
 253 {
 254         if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END))
 255                 return val * 6;
 256         else
 257                 return val * 2;
 258 }
 259
 260 static inline u16 in_to_reg(u8 index, u16 val)
 261 {
 262         if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END))
 263                 return val / 6;
 264         else
 265                 return val / 2;
 266 }
 267
 268 static inline unsigned long fan_from_reg(u16 val)
 269 {
 270         if ((val == 0xfff) || (val == 0))
 271                 return 0;
 272         return 1350000UL / val;
 273 }
 274
 275 static inline u16 fan_to_reg(long rpm)
 276 {
 277         if (rpm <= 0)
 278                 return 0x0fff;
 279         return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
 280 }
 281
 282 static inline unsigned long time_from_reg(u8 reg)
 283 {
 284         return reg * 100;
 285 }
 286
 287 static inline u8 time_to_reg(unsigned long val)
 288 {
 289         return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
 290 }
 291
 292 static inline long temp_from_reg(s8 reg)
 293 {
 294         return reg * 1000;
 295 }
 296
 297 static inline s8 temp_to_reg(long val, s8 min, s8 max)
 298 {
 299         return SENSORS_LIMIT(val / 1000, min, max);
 300 }
 301
 302 static const u16 pwm_freq_cksel0[16] = {
 303         1024, 512, 341, 256, 205, 171, 146, 128,
 304         85, 64, 32, 16, 8, 4, 2, 1
 305 };
 306
 307 static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin)
 308 {
 309         unsigned long base_clock;
 310
 311         if (reg & 0x80) {
 312                 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
 313                 return base_clock / ((reg & 0x7f) + 1);
 314         } else
 315                 return pwm_freq_cksel0[reg & 0x0f];
 316 }
 317
 318 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
 319 {
 320         unsigned long base_clock;
 321         u8 reg0, reg1;
 322         unsigned long best0, best1;
 323
 324         /* Best fit for cksel = 0 */
 325         for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) {
 326                 if (val > (pwm_freq_cksel0[reg0] +
 327                            pwm_freq_cksel0[reg0 + 1]) / 2)
 328                         break;
 329         }
 330         if (val < 375)  /* cksel = 1 can't beat this */
 331                 return reg0;
 332         best0 = pwm_freq_cksel0[reg0];
 333
 334         /* Best fit for cksel = 1 */
 335         base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
 336         reg1 = SENSORS_LIMIT(DIV_ROUND_CLOSEST(base_clock, val), 1, 128);
 337         best1 = base_clock / reg1;
 338         reg1 = 0x80 | (reg1 - 1);
 339
 340         /* Choose the closest one */
 341         if (abs(val - best0) > abs(val - best1))
 342                 return reg1;
 343         else
 344                 return reg0;
 345 }
 346
 347 enum chip_types {w83795g, w83795adg};
 348
 349 struct w83795_data {
 350         struct device *hwmon_dev;
 351         struct mutex update_lock;
 352         unsigned long last_updated;     /* In jiffies */
 353         enum chip_types chip_type;
 354
 355         u8 bank;
 356
 357         u32 has_in;             /* Enable monitor VIN or not */
 358         u8 has_dyn_in;          /* Only in2-0 can have this */
 359         u16 in[21][3];          /* Register value, read/high/low */
 360         u8 in_lsb[10][3];       /* LSB Register value, high/low */
 361         u8 has_gain;            /* has gain: in17-20 * 8 */
 362
 363         u16 has_fan;            /* Enable fan14-1 or not */
 364         u16 fan[14];            /* Register value combine */
 365         u16 fan_min[14];        /* Register value combine */
 366
 367         u8 has_temp;            /* Enable monitor temp6-1 or not */
 368         s8 temp[6][5];          /* current, crit, crit_hyst, warn, warn_hyst */
 369         u8 temp_read_vrlsb[6];
 370         u8 temp_mode;           /* bit 0: TR mode, bit 1: TD mode */
 371         u8 temp_src[3];         /* Register value */
 372
 373         u8 enable_dts;          /* Enable PECI and SB-TSI,
 374                                  * bit 0: =1 enable, =0 disable,
 375                                  * bit 1: =1 AMD SB-TSI, =0 Intel PECI */
 376         u8 has_dts;             /* Enable monitor DTS temp */
 377         s8 dts[8];              /* Register value */
 378         u8 dts_read_vrlsb[8];   /* Register value */
 379         s8 dts_ext[4];          /* Register value */
 380
 381         u8 has_pwm;             /* 795g supports 8 pwm, 795adg only supports 2,
 382                                  * no config register, only affected by chip
 383                                  * type */
 384         u8 pwm[8][5];           /* Register value, output, start, non stop, stop
 385                                  * time, freq */
 386         u16 clkin;              /* CLKIN frequency in kHz */
 387         u8 pwm_fcms[2];         /* Register value */
 388         u8 pwm_tfmr[6];         /* Register value */
 389         u8 pwm_fomc;            /* Register value */
 390
 391         u16 target_speed[8];    /* Register value, target speed for speed
 392                                  * cruise */
 393         u8 tol_speed;           /* tolerance of target speed */
 394         u8 pwm_temp[6][4];      /* TTTI, CTFS, HCT, HOT */
 395         u8 sf4_reg[6][2][7];    /* 6 temp, temp/dcpwm, 7 registers */
 396
 397         u8 setup_pwm[3];        /* Register value */
 398
 399         u8 alarms[6];           /* Register value */
 400         u8 beeps[6];            /* Register value */
 401
 402         char valid;
 403 };
 404
 405 /*
 406  * Hardware access
 407  * We assume that nobdody can change the bank outside the driver.
 408  */
 409
 410 /* Must be called with data->update_lock held, except during initialization */
 411 static int w83795_set_bank(struct i2c_client *client, u8 bank)
 412 {
 413         struct w83795_data *data = i2c_get_clientdata(client);
 414         int err;
 415
 416         /* If the same bank is already set, nothing to do */
 417         if ((data->bank & 0x07) == bank)
 418                 return 0;
 419
 420         /* Change to new bank, preserve all other bits */
 421         bank |= data->bank & ~0x07;
 422         err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank);
 423         if (err < 0) {
 424                 dev_err(&client->dev,
 425                         "Failed to set bank to %d, err %d\n",
 426                         (int)bank, err);
 427                 return err;
 428         }
 429         data->bank = bank;
 430
 431         return 0;
 432 }
 433
 434 /* Must be called with data->update_lock held, except during initialization */
 435 static u8 w83795_read(struct i2c_client *client, u16 reg)
 436 {
 437         int err;
 438
 439         err = w83795_set_bank(client, reg >> 8);
 440         if (err < 0)
 441                 return 0x00;    /* Arbitrary */
 442
 443         err = i2c_smbus_read_byte_data(client, reg & 0xff);
 444         if (err < 0) {
 445                 dev_err(&client->dev,
 446                         "Failed to read from register 0x%03x, err %d\n",
 447                         (int)reg, err);
 448                 return 0x00;    /* Arbitrary */
 449         }
 450         return err;
 451 }
 452
 453 /* Must be called with data->update_lock held, except during initialization */
 454 static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
 455 {
 456         int err;
 457
 458         err = w83795_set_bank(client, reg >> 8);
 459         if (err < 0)
 460                 return err;
 461
 462         err = i2c_smbus_write_byte_data(client, reg & 0xff, value);
 463         if (err < 0)
 464                 dev_err(&client->dev,
 465                         "Failed to write to register 0x%03x, err %d\n",
 466                         (int)reg, err);
 467         return err;
 468 }
 469
 470 static struct w83795_data *w83795_update_device(struct device *dev)
 471 {
 472         struct i2c_client *client = to_i2c_client(dev);
 473         struct w83795_data *data = i2c_get_clientdata(client);
 474         u16 tmp;
 475         int i;
 476
 477         mutex_lock(&data->update_lock);
 478
 479         if (!(time_after(jiffies, data->last_updated + HZ * 2)
 480               || !data->valid))
 481                 goto END;
 482
 483         /* Update the voltages value */
 484         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
 485                 if (!(data->has_in & (1 << i)))
 486                         continue;
 487                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
 488                 tmp |= (w83795_read(client, W83795_REG_VRLSB)
 489                         >> VRLSB_SHIFT) & 0x03;
 490                 data->in[i][IN_READ] = tmp;
 491         }
 492
 493         /* in0-2 can have dynamic limits (W83795G only) */
 494         if (data->has_dyn_in) {
 495                 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX));
 496                 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW));
 497
 498                 for (i = 0; i < 3; i++) {
 499                         if (!(data->has_dyn_in & (1 << i)))
 500                                 continue;
 501                         data->in[i][IN_MAX] =
 502                                 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
 503                         data->in[i][IN_LOW] =
 504                                 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
 505                         data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03;
 506                         data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03;
 507                 }
 508         }
 509
 510         /* Update fan */
 511         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
 512                 if (!(data->has_fan & (1 << i)))
 513                         continue;
 514                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
 515                 data->fan[i] |=
 516                   (w83795_read(client, W83795_REG_VRLSB) >> 4) & 0x0F;
 517         }
 518
 519         /* Update temperature */
 520         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
 521                 /* even stop monitor, register still keep value, just read out
 522                  * it */
 523                 if (!(data->has_temp & (1 << i))) {
 524                         data->temp[i][TEMP_READ] = 0;
 525                         data->temp_read_vrlsb[i] = 0;
 526                         continue;
 527                 }
 528                 data->temp[i][TEMP_READ] =
 529                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
 530                 data->temp_read_vrlsb[i] =
 531                         w83795_read(client, W83795_REG_VRLSB);
 532         }
 533
 534         /* Update dts temperature */
 535         if (data->enable_dts != 0) {
 536                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
 537                         if (!(data->has_dts & (1 << i)))
 538                                 continue;
 539                         data->dts[i] =
 540                                 w83795_read(client, W83795_REG_DTS(i));
 541                         data->dts_read_vrlsb[i] =
 542                                 w83795_read(client, W83795_REG_VRLSB);
 543                 }
 544         }
 545
 546         /* Update pwm output */
 547         for (i = 0; i < data->has_pwm; i++) {
 548                 data->pwm[i][PWM_OUTPUT] =
 549                     w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
 550         }
 551
 552         /* update alarm */
 553         for (i = 0; i < ALARM_BEEP_REG_NUM; i++)
 554                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
 555
 556         data->last_updated = jiffies;
 557         data->valid = 1;
 558
 559 END:
 560         mutex_unlock(&data->update_lock);
 561         return data;
 562 }
 563
 564 /*
 565  * Sysfs attributes
 566  */
 567
 568 #define ALARM_STATUS      0
 569 #define BEEP_ENABLE       1
 570 static ssize_t
 571 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
 572 {
 573         struct w83795_data *data = w83795_update_device(dev);
 574         struct sensor_device_attribute_2 *sensor_attr =
 575             to_sensor_dev_attr_2(attr);
 576         int nr = sensor_attr->nr;
 577         int index = sensor_attr->index >> 3;
 578         int bit = sensor_attr->index & 0x07;
 579         u8 val;
 580
 581         if (ALARM_STATUS == nr) {
 582                 val = (data->alarms[index] >> (bit)) & 1;
 583         } else {                /* BEEP_ENABLE */
 584                 val = (data->beeps[index] >> (bit)) & 1;
 585         }
 586
 587         return sprintf(buf, "%u\n", val);
 588 }
 589
 590 static ssize_t
 591 store_beep(struct device *dev, struct device_attribute *attr,
 592            const char *buf, size_t count)
 593 {
 594         struct i2c_client *client = to_i2c_client(dev);
 595         struct w83795_data *data = i2c_get_clientdata(client);
 596         struct sensor_device_attribute_2 *sensor_attr =
 597             to_sensor_dev_attr_2(attr);
 598         int index = sensor_attr->index >> 3;
 599         int shift = sensor_attr->index & 0x07;
 600         u8 beep_bit = 1 << shift;
 601         unsigned long val;
 602
 603         if (strict_strtoul(buf, 10, &val) < 0)
 604                 return -EINVAL;
 605         if (val != 0 && val != 1)
 606                 return -EINVAL;
 607
 608         mutex_lock(&data->update_lock);
 609         data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
 610         data->beeps[index] &= ~beep_bit;
 611         data->beeps[index] |= val << shift;
 612         w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
 613         mutex_unlock(&data->update_lock);
 614
 615         return count;
 616 }
 617
 618 /* Write any value to clear chassis alarm */
 619 static ssize_t
 620 store_chassis_clear(struct device *dev,
 621                     struct device_attribute *attr, const char *buf,
 622                     size_t count)
 623 {
 624         struct i2c_client *client = to_i2c_client(dev);
 625         struct w83795_data *data = i2c_get_clientdata(client);
 626         u8 val;
 627
 628         mutex_lock(&data->update_lock);
 629         val = w83795_read(client, W83795_REG_CLR_CHASSIS);
 630         val |= 0x80;
 631         w83795_write(client, W83795_REG_CLR_CHASSIS, val);
 632         mutex_unlock(&data->update_lock);
 633         return count;
 634 }
 635
 636 #define FAN_INPUT     0
 637 #define FAN_MIN       1
 638 static ssize_t
 639 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
 640 {
 641         struct sensor_device_attribute_2 *sensor_attr =
 642             to_sensor_dev_attr_2(attr);
 643         int nr = sensor_attr->nr;
 644         int index = sensor_attr->index;
 645         struct w83795_data *data = w83795_update_device(dev);
 646         u16 val;
 647
 648         if (FAN_INPUT == nr)
 649                 val = data->fan[index] & 0x0fff;
 650         else
 651                 val = data->fan_min[index] & 0x0fff;
 652
 653         return sprintf(buf, "%lu\n", fan_from_reg(val));
 654 }
 655
 656 static ssize_t
 657 store_fan_min(struct device *dev, struct device_attribute *attr,
 658               const char *buf, size_t count)
 659 {
 660         struct sensor_device_attribute_2 *sensor_attr =
 661             to_sensor_dev_attr_2(attr);
 662         int index = sensor_attr->index;
 663         struct i2c_client *client = to_i2c_client(dev);
 664         struct w83795_data *data = i2c_get_clientdata(client);
 665         unsigned long val;
 666
 667         if (strict_strtoul(buf, 10, &val))
 668                 return -EINVAL;
 669         val = fan_to_reg(val);
 670
 671         mutex_lock(&data->update_lock);
 672         data->fan_min[index] = val;
 673         w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
 674         val &= 0x0f;
 675         if (index % 1) {
 676                 val <<= 4;
 677                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 678                        & 0x0f;
 679         } else {
 680                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
 681                        & 0xf0;
 682         }
 683         w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
 684         mutex_unlock(&data->update_lock);
 685
 686         return count;
 687 }
 688
 689 static ssize_t
 690 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 691 {
 692         struct w83795_data *data = w83795_update_device(dev);
 693         struct sensor_device_attribute_2 *sensor_attr =
 694             to_sensor_dev_attr_2(attr);
 695         int nr = sensor_attr->nr;
 696         int index = sensor_attr->index;
 697         unsigned int val;
 698
 699         switch (nr) {
 700         case PWM_STOP_TIME:
 701                 val = time_from_reg(data->pwm[index][nr]);
 702                 break;
 703         case PWM_FREQ:
 704                 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin);
 705                 break;
 706         default:
 707                 val = data->pwm[index][nr];
 708                 break;
 709         }
 710
 711         return sprintf(buf, "%u\n", val);
 712 }
 713
 714 static ssize_t
 715 store_pwm(struct device *dev, struct device_attribute *attr,
 716           const char *buf, size_t count)
 717 {
 718         struct i2c_client *client = to_i2c_client(dev);
 719         struct w83795_data *data = i2c_get_clientdata(client);
 720         struct sensor_device_attribute_2 *sensor_attr =
 721             to_sensor_dev_attr_2(attr);
 722         int nr = sensor_attr->nr;
 723         int index = sensor_attr->index;
 724         unsigned long val;
 725
 726         if (strict_strtoul(buf, 10, &val) < 0)
 727                 return -EINVAL;
 728
 729         mutex_lock(&data->update_lock);
 730         switch (nr) {
 731         case PWM_STOP_TIME:
 732                 val = time_to_reg(val);
 733                 break;
 734         case PWM_FREQ:
 735                 val = pwm_freq_to_reg(val, data->clkin);
 736                 break;
 737         default:
 738                 val = SENSORS_LIMIT(val, 0, 0xff);
 739                 break;
 740         }
 741         w83795_write(client, W83795_REG_PWM(index, nr), val);
 742         data->pwm[index][nr] = val;
 743         mutex_unlock(&data->update_lock);
 744         return count;
 745 }
 746
 747 static ssize_t
 748 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
 749 {
 750         struct sensor_device_attribute_2 *sensor_attr =
 751             to_sensor_dev_attr_2(attr);
 752         struct i2c_client *client = to_i2c_client(dev);
 753         struct w83795_data *data = i2c_get_clientdata(client);
 754         int index = sensor_attr->index;
 755         u8 tmp;
 756
 757         if (1 == (data->pwm_fcms[0] & (1 << index))) {
 758                 tmp = 2;
 759                 goto out;
 760         }
 761         for (tmp = 0; tmp < 6; tmp++) {
 762                 if (data->pwm_tfmr[tmp] & (1 << index)) {
 763                         tmp = 3;
 764                         goto out;
 765                 }
 766         }
 767         if (data->pwm_fomc & (1 << index))
 768                 tmp = 0;
 769         else
 770                 tmp = 1;
 771
 772 out:
 773         return sprintf(buf, "%u\n", tmp);
 774 }
 775
 776 static ssize_t
 777 store_pwm_enable(struct device *dev, struct device_attribute *attr,
 778           const char *buf, size_t count)
 779 {
 780         struct i2c_client *client = to_i2c_client(dev);
 781         struct w83795_data *data = i2c_get_clientdata(client);
 782         struct sensor_device_attribute_2 *sensor_attr =
 783             to_sensor_dev_attr_2(attr);
 784         int index = sensor_attr->index;
 785         unsigned long val;
 786         int i;
 787
 788         if (strict_strtoul(buf, 10, &val) < 0)
 789                 return -EINVAL;
 790         if (val > 2)
 791                 return -EINVAL;
 792
 793         mutex_lock(&data->update_lock);
 794         switch (val) {
 795         case 0:
 796         case 1:
 797                 data->pwm_fcms[0] &= ~(1 << index);
 798                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 799                 for (i = 0; i < 6; i++) {
 800                         data->pwm_tfmr[i] &= ~(1 << index);
 801                         w83795_write(client, W83795_REG_TFMR(i),
 802                                 data->pwm_tfmr[i]);
 803                 }
 804                 data->pwm_fomc |= 1 << index;
 805                 data->pwm_fomc ^= val << index;
 806                 w83795_write(client, W83795_REG_FOMC, data->pwm_fomc);
 807                 break;
 808         case 2:
 809                 data->pwm_fcms[0] |= (1 << index);
 810                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
 811                 break;
 812         }
 813         mutex_unlock(&data->update_lock);
 814         return count;
 815 }
 816
 817 static ssize_t
 818 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
 819 {
 820         struct sensor_device_attribute_2 *sensor_attr =
 821             to_sensor_dev_attr_2(attr);
 822         struct i2c_client *client = to_i2c_client(dev);
 823         struct w83795_data *data = i2c_get_clientdata(client);
 824         int index = sensor_attr->index;
 825         u8 val = index / 2;
 826         u8 tmp = data->temp_src[val];
 827
 828         if (index % 1)
 829                 val = 4;
 830         else
 831                 val = 0;
 832         tmp >>= val;
 833         tmp &= 0x0f;
 834
 835         return sprintf(buf, "%u\n", tmp);
 836 }
 837
 838 static ssize_t
 839 store_temp_src(struct device *dev, struct device_attribute *attr,
 840           const char *buf, size_t count)
 841 {
 842         struct i2c_client *client = to_i2c_client(dev);
 843         struct w83795_data *data = i2c_get_clientdata(client);
 844         struct sensor_device_attribute_2 *sensor_attr =
 845             to_sensor_dev_attr_2(attr);
 846         int index = sensor_attr->index;
 847         unsigned long tmp;
 848         u8 val = index / 2;
 849
 850         if (strict_strtoul(buf, 10, &tmp) < 0)
 851                 return -EINVAL;
 852         tmp = SENSORS_LIMIT(tmp, 0, 15);
 853
 854         mutex_lock(&data->update_lock);
 855         if (index % 1) {
 856                 tmp <<= 4;
 857                 data->temp_src[val] &= 0x0f;
 858         } else {
 859                 data->temp_src[val] &= 0xf0;
 860         }
 861         data->temp_src[val] |= tmp;
 862         w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
 863         mutex_unlock(&data->update_lock);
 864
 865         return count;
 866 }
 867
 868 #define TEMP_PWM_ENABLE   0
 869 #define TEMP_PWM_FAN_MAP  1
 870 static ssize_t
 871 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 872                      char *buf)
 873 {
 874         struct i2c_client *client = to_i2c_client(dev);
 875         struct w83795_data *data = i2c_get_clientdata(client);
 876         struct sensor_device_attribute_2 *sensor_attr =
 877             to_sensor_dev_attr_2(attr);
 878         int nr = sensor_attr->nr;
 879         int index = sensor_attr->index;
 880         u8 tmp = 0xff;
 881
 882         switch (nr) {
 883         case TEMP_PWM_ENABLE:
 884                 tmp = (data->pwm_fcms[1] >> index) & 1;
 885                 if (tmp)
 886                         tmp = 4;
 887                 else
 888                         tmp = 3;
 889                 break;
 890         case TEMP_PWM_FAN_MAP:
 891                 tmp = data->pwm_tfmr[index];
 892                 break;
 893         }
 894
 895         return sprintf(buf, "%u\n", tmp);
 896 }
 897
 898 static ssize_t
 899 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
 900           const char *buf, size_t count)
 901 {
 902         struct i2c_client *client = to_i2c_client(dev);
 903         struct w83795_data *data = i2c_get_clientdata(client);
 904         struct sensor_device_attribute_2 *sensor_attr =
 905             to_sensor_dev_attr_2(attr);
 906         int nr = sensor_attr->nr;
 907         int index = sensor_attr->index;
 908         unsigned long tmp;
 909
 910         if (strict_strtoul(buf, 10, &tmp) < 0)
 911                 return -EINVAL;
 912
 913         switch (nr) {
 914         case TEMP_PWM_ENABLE:
 915                 if ((tmp != 3) && (tmp != 4))
 916                         return -EINVAL;
 917                 tmp -= 3;
 918                 mutex_lock(&data->update_lock);
 919                 data->pwm_fcms[1] &= ~(1 << index);
 920                 data->pwm_fcms[1] |= tmp << index;
 921                 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
 922                 mutex_unlock(&data->update_lock);
 923                 break;
 924         case TEMP_PWM_FAN_MAP:
 925                 mutex_lock(&data->update_lock);
 926                 tmp = SENSORS_LIMIT(tmp, 0, 0xff);
 927                 w83795_write(client, W83795_REG_TFMR(index), tmp);
 928                 data->pwm_tfmr[index] = tmp;
 929                 mutex_unlock(&data->update_lock);
 930                 break;
 931         }
 932         return count;
 933 }
 934
 935 #define FANIN_TARGET   0
 936 #define FANIN_TOL      1
 937 static ssize_t
 938 show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
 939 {
 940         struct i2c_client *client = to_i2c_client(dev);
 941         struct w83795_data *data = i2c_get_clientdata(client);
 942         struct sensor_device_attribute_2 *sensor_attr =
 943             to_sensor_dev_attr_2(attr);
 944         int nr = sensor_attr->nr;
 945         int index = sensor_attr->index;
 946         u16 tmp = 0;
 947
 948         switch (nr) {
 949         case FANIN_TARGET:
 950                 tmp = fan_from_reg(data->target_speed[index]);
 951                 break;
 952         case FANIN_TOL:
 953                 tmp = data->tol_speed;
 954                 break;
 955         }
 956
 957         return sprintf(buf, "%u\n", tmp);
 958 }
 959
 960 static ssize_t
 961 store_fanin(struct device *dev, struct device_attribute *attr,
 962           const char *buf, size_t count)
 963 {
 964         struct i2c_client *client = to_i2c_client(dev);
 965         struct w83795_data *data = i2c_get_clientdata(client);
 966         struct sensor_device_attribute_2 *sensor_attr =
 967             to_sensor_dev_attr_2(attr);
 968         int nr = sensor_attr->nr;
 969         int index = sensor_attr->index;
 970         unsigned long val;
 971
 972         if (strict_strtoul(buf, 10, &val) < 0)
 973                 return -EINVAL;
 974
 975         mutex_lock(&data->update_lock);
 976         switch (nr) {
 977         case FANIN_TARGET:
 978                 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff));
 979                 w83795_write(client, W83795_REG_FTSH(index), (val >> 4) & 0xff);
 980                 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
 981                 data->target_speed[index] = val;
 982                 break;
 983         case FANIN_TOL:
 984                 val = SENSORS_LIMIT(val, 0, 0x3f);
 985                 w83795_write(client, W83795_REG_TFTS, val);
 986                 data->tol_speed = val;
 987                 break;
 988         }
 989         mutex_unlock(&data->update_lock);
 990
 991         return count;
 992 }
 993
 994
 995 static ssize_t
 996 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
 997 {
 998         struct i2c_client *client = to_i2c_client(dev);
 999         struct w83795_data *data = i2c_get_clientdata(client);
1000         struct sensor_device_attribute_2 *sensor_attr =
1001             to_sensor_dev_attr_2(attr);
1002         int nr = sensor_attr->nr;
1003         int index = sensor_attr->index;
1004         long tmp = temp_from_reg(data->pwm_temp[index][nr]);
1005
1006         return sprintf(buf, "%ld\n", tmp);
1007 }
1008
1009 static ssize_t
1010 store_temp_pwm(struct device *dev, struct device_attribute *attr,
1011           const char *buf, size_t count)
1012 {
1013         struct i2c_client *client = to_i2c_client(dev);
1014         struct w83795_data *data = i2c_get_clientdata(client);
1015         struct sensor_device_attribute_2 *sensor_attr =
1016             to_sensor_dev_attr_2(attr);
1017         int nr = sensor_attr->nr;
1018         int index = sensor_attr->index;
1019         unsigned long val;
1020         u8 tmp;
1021
1022         if (strict_strtoul(buf, 10, &val) < 0)
1023                 return -EINVAL;
1024         val /= 1000;
1025
1026         mutex_lock(&data->update_lock);
1027         switch (nr) {
1028         case TEMP_PWM_TTTI:
1029                 val = SENSORS_LIMIT(val, 0, 0x7f);
1030                 w83795_write(client, W83795_REG_TTTI(index), val);
1031                 break;
1032         case TEMP_PWM_CTFS:
1033                 val = SENSORS_LIMIT(val, 0, 0x7f);
1034                 w83795_write(client, W83795_REG_CTFS(index), val);
1035                 break;
1036         case TEMP_PWM_HCT:
1037                 val = SENSORS_LIMIT(val, 0, 0x0f);
1038                 tmp = w83795_read(client, W83795_REG_HT(index));
1039                 tmp &= 0x0f;
1040                 tmp |= (val << 4) & 0xf0;
1041                 w83795_write(client, W83795_REG_HT(index), tmp);
1042                 break;
1043         case TEMP_PWM_HOT:
1044                 val = SENSORS_LIMIT(val, 0, 0x0f);
1045                 tmp = w83795_read(client, W83795_REG_HT(index));
1046                 tmp &= 0xf0;
1047                 tmp |= val & 0x0f;
1048                 w83795_write(client, W83795_REG_HT(index), tmp);
1049                 break;
1050         }
1051         data->pwm_temp[index][nr] = val;
1052         mutex_unlock(&data->update_lock);
1053
1054         return count;
1055 }
1056
1057 static ssize_t
1058 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1059 {
1060         struct i2c_client *client = to_i2c_client(dev);
1061         struct w83795_data *data = i2c_get_clientdata(client);
1062         struct sensor_device_attribute_2 *sensor_attr =
1063             to_sensor_dev_attr_2(attr);
1064         int nr = sensor_attr->nr;
1065         int index = sensor_attr->index;
1066
1067         return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1068 }
1069
1070 static ssize_t
1071 store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1072           const char *buf, size_t count)
1073 {
1074         struct i2c_client *client = to_i2c_client(dev);
1075         struct w83795_data *data = i2c_get_clientdata(client);
1076         struct sensor_device_attribute_2 *sensor_attr =
1077             to_sensor_dev_attr_2(attr);
1078         int nr = sensor_attr->nr;
1079         int index = sensor_attr->index;
1080         unsigned long val;
1081
1082         if (strict_strtoul(buf, 10, &val) < 0)
1083                 return -EINVAL;
1084
1085         mutex_lock(&data->update_lock);
1086         w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1087         data->sf4_reg[index][SF4_PWM][nr] = val;
1088         mutex_unlock(&data->update_lock);
1089
1090         return count;
1091 }
1092
1093 static ssize_t
1094 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1095 {
1096         struct i2c_client *client = to_i2c_client(dev);
1097         struct w83795_data *data = i2c_get_clientdata(client);
1098         struct sensor_device_attribute_2 *sensor_attr =
1099             to_sensor_dev_attr_2(attr);
1100         int nr = sensor_attr->nr;
1101         int index = sensor_attr->index;
1102
1103         return sprintf(buf, "%u\n",
1104                 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1105 }
1106
1107 static ssize_t
1108 store_sf4_temp(struct device *dev, struct device_attribute *attr,
1109           const char *buf, size_t count)
1110 {
1111         struct i2c_client *client = to_i2c_client(dev);
1112         struct w83795_data *data = i2c_get_clientdata(client);
1113         struct sensor_device_attribute_2 *sensor_attr =
1114             to_sensor_dev_attr_2(attr);
1115         int nr = sensor_attr->nr;
1116         int index = sensor_attr->index;
1117         unsigned long val;
1118
1119         if (strict_strtoul(buf, 10, &val) < 0)
1120                 return -EINVAL;
1121         val /= 1000;
1122
1123         mutex_lock(&data->update_lock);
1124         w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1125         data->sf4_reg[index][SF4_TEMP][nr] = val;
1126         mutex_unlock(&data->update_lock);
1127
1128         return count;
1129 }
1130
1131
1132 static ssize_t
1133 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1134 {
1135         struct sensor_device_attribute_2 *sensor_attr =
1136             to_sensor_dev_attr_2(attr);
1137         int nr = sensor_attr->nr;
1138         int index = sensor_attr->index;
1139         struct w83795_data *data = w83795_update_device(dev);
1140         long temp = temp_from_reg(data->temp[index][nr]);
1141
1142         if (TEMP_READ == nr)
1143                 temp += ((data->temp_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03)
1144                         * 250;
1145         return sprintf(buf, "%ld\n", temp);
1146 }
1147
1148 static ssize_t
1149 store_temp(struct device *dev, struct device_attribute *attr,
1150            const char *buf, size_t count)
1151 {
1152         struct sensor_device_attribute_2 *sensor_attr =
1153             to_sensor_dev_attr_2(attr);
1154         int nr = sensor_attr->nr;
1155         int index = sensor_attr->index;
1156         struct i2c_client *client = to_i2c_client(dev);
1157         struct w83795_data *data = i2c_get_clientdata(client);
1158         long tmp;
1159
1160         if (strict_strtol(buf, 10, &tmp) < 0)
1161                 return -EINVAL;
1162
1163         mutex_lock(&data->update_lock);
1164         data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1165         w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1166         mutex_unlock(&data->update_lock);
1167         return count;
1168 }
1169
1170
1171 static ssize_t
1172 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1173 {
1174         struct i2c_client *client = to_i2c_client(dev);
1175         struct w83795_data *data = i2c_get_clientdata(client);
1176         struct sensor_device_attribute_2 *sensor_attr =
1177             to_sensor_dev_attr_2(attr);
1178         int index = sensor_attr->index;
1179         u8 tmp;
1180
1181         if (data->enable_dts == 0)
1182                 return sprintf(buf, "%d\n", 0);
1183
1184         if ((data->has_dts >> index) & 0x01) {
1185                 if (data->enable_dts & 2)
1186                         tmp = 5;
1187                 else
1188                         tmp = 6;
1189         } else {
1190                 tmp = 0;
1191         }
1192
1193         return sprintf(buf, "%d\n", tmp);
1194 }
1195
1196 static ssize_t
1197 show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1198 {
1199         struct sensor_device_attribute_2 *sensor_attr =
1200             to_sensor_dev_attr_2(attr);
1201         int index = sensor_attr->index;
1202         struct w83795_data *data = w83795_update_device(dev);
1203         long temp = temp_from_reg(data->dts[index]);
1204
1205         temp += ((data->dts_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03) * 250;
1206         return sprintf(buf, "%ld\n", temp);
1207 }
1208
1209 static ssize_t
1210 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1211 {
1212         struct sensor_device_attribute_2 *sensor_attr =
1213             to_sensor_dev_attr_2(attr);
1214         int nr = sensor_attr->nr;
1215         struct i2c_client *client = to_i2c_client(dev);
1216         struct w83795_data *data = i2c_get_clientdata(client);
1217         long temp = temp_from_reg(data->dts_ext[nr]);
1218
1219         return sprintf(buf, "%ld\n", temp);
1220 }
1221
1222 static ssize_t
1223 store_dts_ext(struct device *dev, struct device_attribute *attr,
1224            const char *buf, size_t count)
1225 {
1226         struct sensor_device_attribute_2 *sensor_attr =
1227             to_sensor_dev_attr_2(attr);
1228         int nr = sensor_attr->nr;
1229         struct i2c_client *client = to_i2c_client(dev);
1230         struct w83795_data *data = i2c_get_clientdata(client);
1231         long tmp;
1232
1233         if (strict_strtol(buf, 10, &tmp) < 0)
1234                 return -EINVAL;
1235
1236         mutex_lock(&data->update_lock);
1237         data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1238         w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1239         mutex_unlock(&data->update_lock);
1240         return count;
1241 }
1242
1243
1244 /*
1245         Type 3:  Thermal diode
1246         Type 4:  Thermistor
1247
1248         Temp5-6, default TR
1249         Temp1-4, default TD
1250 */
1251
1252 static ssize_t
1253 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1254 {
1255         struct i2c_client *client = to_i2c_client(dev);
1256         struct w83795_data *data = i2c_get_clientdata(client);
1257         struct sensor_device_attribute_2 *sensor_attr =
1258             to_sensor_dev_attr_2(attr);
1259         int index = sensor_attr->index;
1260         u8 tmp;
1261
1262         if (data->has_temp >> index & 0x01) {
1263                 if (data->temp_mode >> index & 0x01)
1264                         tmp = 3;
1265                 else
1266                         tmp = 4;
1267         } else {
1268                 tmp = 0;
1269         }
1270
1271         return sprintf(buf, "%d\n", tmp);
1272 }
1273
1274 static ssize_t
1275 store_temp_mode(struct device *dev, struct device_attribute *attr,
1276                 const char *buf, size_t count)
1277 {
1278         struct i2c_client *client = to_i2c_client(dev);
1279         struct w83795_data *data = i2c_get_clientdata(client);
1280         struct sensor_device_attribute_2 *sensor_attr =
1281             to_sensor_dev_attr_2(attr);
1282         int index = sensor_attr->index;
1283         unsigned long val;
1284         u8 tmp;
1285         u32 mask;
1286
1287         if (strict_strtoul(buf, 10, &val) < 0)
1288                 return -EINVAL;
1289         if ((val != 4) && (val != 3))
1290                 return -EINVAL;
1291         if ((index > 3) && (val == 3))
1292                 return -EINVAL;
1293
1294         mutex_lock(&data->update_lock);
1295         if (val == 3) {
1296                 val = TEMP_CTRL_TD;
1297                 data->has_temp |= 1 << index;
1298                 data->temp_mode |= 1 << index;
1299         } else if (val == 4) {
1300                 val = TEMP_CTRL_TR;
1301                 data->has_temp |= 1 << index;
1302                 tmp = 1 << index;
1303                 data->temp_mode &= ~tmp;
1304         }
1305
1306         if (index > 3)
1307                 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
1308         else
1309                 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1310
1311         mask = 0x03 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_SHIFT];
1312         tmp &= ~mask;
1313         tmp |= W83795_REG_TEMP_CTRL[index][val];
1314
1315         mask = 1 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_HASIN_SHIFT];
1316         data->has_in &= ~mask;
1317
1318         if (index > 3)
1319                 w83795_write(client, W83795_REG_TEMP_CTRL1, tmp);
1320         else
1321                 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1322
1323         mutex_unlock(&data->update_lock);
1324         return count;
1325 }
1326
1327
1328 /* show/store VIN */
1329 static ssize_t
1330 show_in(struct device *dev, struct device_attribute *attr, char *buf)
1331 {
1332         struct sensor_device_attribute_2 *sensor_attr =
1333             to_sensor_dev_attr_2(attr);
1334         int nr = sensor_attr->nr;
1335         int index = sensor_attr->index;
1336         struct w83795_data *data = w83795_update_device(dev);
1337         u16 val = data->in[index][nr];
1338         u8 lsb_idx;
1339
1340         switch (nr) {
1341         case IN_READ:
1342                 /* calculate this value again by sensors as sensors3.conf */
1343                 if ((index >= 17) &&
1344                     !((data->has_gain >> (index - 17)) & 1))
1345                         val *= 8;
1346                 break;
1347         case IN_MAX:
1348         case IN_LOW:
1349                 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1350                 val <<= 2;
1351                 val |= (data->in_lsb[lsb_idx][nr] >>
1352                         IN_LSB_SHIFT_IDX[lsb_idx][IN_LSB_SHIFT]) & 0x03;
1353                 if ((index >= 17) &&
1354                     !((data->has_gain >> (index - 17)) & 1))
1355                         val *= 8;
1356                 break;
1357         }
1358         val = in_from_reg(index, val);
1359
1360         return sprintf(buf, "%d\n", val);
1361 }
1362
1363 static ssize_t
1364 store_in(struct device *dev, struct device_attribute *attr,
1365          const char *buf, size_t count)
1366 {
1367         struct sensor_device_attribute_2 *sensor_attr =
1368             to_sensor_dev_attr_2(attr);
1369         int nr = sensor_attr->nr;
1370         int index = sensor_attr->index;
1371         struct i2c_client *client = to_i2c_client(dev);
1372         struct w83795_data *data = i2c_get_clientdata(client);
1373         unsigned long val;
1374         u8 tmp;
1375         u8 lsb_idx;
1376
1377         if (strict_strtoul(buf, 10, &val) < 0)
1378                 return -EINVAL;
1379         val = in_to_reg(index, val);
1380
1381         if ((index >= 17) &&
1382             !((data->has_gain >> (index - 17)) & 1))
1383                 val /= 8;
1384         val = SENSORS_LIMIT(val, 0, 0x3FF);
1385         mutex_lock(&data->update_lock);
1386
1387         lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1388         tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1389         tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1390         tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1391         w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1392         data->in_lsb[lsb_idx][nr] = tmp;
1393
1394         tmp = (val >> 2) & 0xff;
1395         w83795_write(client, W83795_REG_IN[index][nr], tmp);
1396         data->in[index][nr] = tmp;
1397
1398         mutex_unlock(&data->update_lock);
1399         return count;
1400 }
1401
1402
1403 static ssize_t
1404 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1405 {
1406         struct sensor_device_attribute_2 *sensor_attr =
1407             to_sensor_dev_attr_2(attr);
1408         int nr = sensor_attr->nr;
1409         struct i2c_client *client = to_i2c_client(dev);
1410         struct w83795_data *data = i2c_get_clientdata(client);
1411         u16 val = data->setup_pwm[nr];
1412
1413         switch (nr) {
1414         case SETUP_PWM_UPTIME:
1415         case SETUP_PWM_DOWNTIME:
1416                 val = time_from_reg(val);
1417                 break;
1418         }
1419
1420         return sprintf(buf, "%d\n", val);
1421 }
1422
1423 static ssize_t
1424 store_sf_setup(struct device *dev, struct device_attribute *attr,
1425          const char *buf, size_t count)
1426 {
1427         struct sensor_device_attribute_2 *sensor_attr =
1428             to_sensor_dev_attr_2(attr);
1429         int nr = sensor_attr->nr;
1430         struct i2c_client *client = to_i2c_client(dev);
1431         struct w83795_data *data = i2c_get_clientdata(client);
1432         unsigned long val;
1433
1434         if (strict_strtoul(buf, 10, &val) < 0)
1435                 return -EINVAL;
1436
1437         switch (nr) {
1438         case SETUP_PWM_DEFAULT:
1439                 val = SENSORS_LIMIT(val, 0, 0xff);
1440                 break;
1441         case SETUP_PWM_UPTIME:
1442         case SETUP_PWM_DOWNTIME:
1443                 val = time_to_reg(val);
1444                 if (val == 0)
1445                         return -EINVAL;
1446                 break;
1447         }
1448
1449         mutex_lock(&data->update_lock);
1450         data->setup_pwm[nr] = val;
1451         w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1452         mutex_unlock(&data->update_lock);
1453         return count;
1454 }
1455
1456
1457 #define NOT_USED                        -1
1458
1459 /* Don't change the attribute order, _max and _min are accessed by index
1460  * somewhere else in the code */
1461 #define SENSOR_ATTR_IN(index) {                                         \
1462         SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL,        \
1463                 IN_READ, index), \
1464         SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in,      \
1465                 store_in, IN_MAX, index),                               \
1466         SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in,      \
1467                 store_in, IN_LOW, index),                               \
1468         SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep,      \
1469                 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1470         SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO,              \
1471                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1472                 index + ((index > 14) ? 1 : 0)) }
1473
1474 #define SENSOR_ATTR_FAN(index) {                                        \
1475         SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan,            \
1476                 NULL, FAN_INPUT, index - 1), \
1477         SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO,              \
1478                 show_fan, store_fan_min, FAN_MIN, index - 1),   \
1479         SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep,     \
1480                 NULL, ALARM_STATUS, index + 31),                        \
1481         SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO,             \
1482                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) }
1483
1484 #define SENSOR_ATTR_PWM(index) {                                        \
1485         SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm,          \
1486                 store_pwm, PWM_OUTPUT, index - 1),                      \
1487         SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO,          \
1488                 show_pwm, store_pwm, PWM_NONSTOP, index - 1),           \
1489         SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO,            \
1490                 show_pwm, store_pwm, PWM_START, index - 1),             \
1491         SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO,        \
1492                 show_pwm, store_pwm, PWM_STOP_TIME, index - 1),  \
1493         SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO,     \
1494                 show_pwm, store_pwm, PWM_FREQ, index - 1),       \
1495         SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO,           \
1496                 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
1497         SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
1498                 show_fanin, store_fanin, FANIN_TARGET, index - 1) }
1499
1500 #define SENSOR_ATTR_DTS(index) {                                        \
1501         SENSOR_ATTR_2(temp##index##_type, S_IRUGO ,             \
1502                 show_dts_mode, NULL, NOT_USED, index - 7),      \
1503         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts,           \
1504                 NULL, NOT_USED, index - 7),                             \
1505         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \
1506                 store_dts_ext, DTS_CRIT, NOT_USED),                     \
1507         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1508                 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED),  \
1509         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1510                 store_dts_ext, DTS_WARN, NOT_USED),                     \
1511         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1512                 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED),  \
1513         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1514                 show_alarm_beep, NULL, ALARM_STATUS, index + 17),       \
1515         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1516                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
1517
1518 #define SENSOR_ATTR_TEMP(index) {                                       \
1519         SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR,            \
1520                 show_temp_mode, store_temp_mode, NOT_USED, index - 1),  \
1521         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp,          \
1522                 NULL, TEMP_READ, index - 1),                            \
1523         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \
1524                 store_temp, TEMP_CRIT, index - 1),                      \
1525         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1526                 show_temp, store_temp, TEMP_CRIT_HYST, index - 1),      \
1527         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp,  \
1528                 store_temp, TEMP_WARN, index - 1),                      \
1529         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1530                 show_temp, store_temp, TEMP_WARN_HYST, index - 1),      \
1531         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1532                 show_alarm_beep, NULL, ALARM_STATUS,                    \
1533                 index + (index > 4 ? 11 : 17)),                         \
1534         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1535                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1536                 index + (index > 4 ? 11 : 17)),                         \
1537         SENSOR_ATTR_2(temp##index##_source_sel, S_IWUSR | S_IRUGO,      \
1538                 show_temp_src, store_temp_src, NOT_USED, index - 1),    \
1539         SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO,      \
1540                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1541                 TEMP_PWM_ENABLE, index - 1),                            \
1542         SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1543                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1544                 TEMP_PWM_FAN_MAP, index - 1),                           \
1545         SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO,         \
1546                 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1547         SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO,            \
1548                 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1549         SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO,       \
1550                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1551         SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO,  \
1552                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1553         SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1554                 show_sf4_pwm, store_sf4_pwm, 0, index - 1),             \
1555         SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1556                 show_sf4_pwm, store_sf4_pwm, 1, index - 1),             \
1557         SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1558                 show_sf4_pwm, store_sf4_pwm, 2, index - 1),             \
1559         SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1560                 show_sf4_pwm, store_sf4_pwm, 3, index - 1),             \
1561         SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1562                 show_sf4_pwm, store_sf4_pwm, 4, index - 1),             \
1563         SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1564                 show_sf4_pwm, store_sf4_pwm, 5, index - 1),             \
1565         SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1566                 show_sf4_pwm, store_sf4_pwm, 6, index - 1),             \
1567         SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1568                 show_sf4_temp, store_sf4_temp, 0, index - 1),           \
1569         SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1570                 show_sf4_temp, store_sf4_temp, 1, index - 1),           \
1571         SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1572                 show_sf4_temp, store_sf4_temp, 2, index - 1),           \
1573         SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1574                 show_sf4_temp, store_sf4_temp, 3, index - 1),           \
1575         SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1576                 show_sf4_temp, store_sf4_temp, 4, index - 1),           \
1577         SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1578                 show_sf4_temp, store_sf4_temp, 5, index - 1),           \
1579         SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1580                 show_sf4_temp, store_sf4_temp, 6, index - 1) }
1581
1582
1583 static struct sensor_device_attribute_2 w83795_in[][5] = {
1584         SENSOR_ATTR_IN(0),
1585         SENSOR_ATTR_IN(1),
1586         SENSOR_ATTR_IN(2),
1587         SENSOR_ATTR_IN(3),
1588         SENSOR_ATTR_IN(4),
1589         SENSOR_ATTR_IN(5),
1590         SENSOR_ATTR_IN(6),
1591         SENSOR_ATTR_IN(7),
1592         SENSOR_ATTR_IN(8),
1593         SENSOR_ATTR_IN(9),
1594         SENSOR_ATTR_IN(10),
1595         SENSOR_ATTR_IN(11),
1596         SENSOR_ATTR_IN(12),
1597         SENSOR_ATTR_IN(13),
1598         SENSOR_ATTR_IN(14),
1599         SENSOR_ATTR_IN(15),
1600         SENSOR_ATTR_IN(16),
1601         SENSOR_ATTR_IN(17),
1602         SENSOR_ATTR_IN(18),
1603         SENSOR_ATTR_IN(19),
1604         SENSOR_ATTR_IN(20),
1605 };
1606
1607 static const struct sensor_device_attribute_2 w83795_fan[][4] = {
1608         SENSOR_ATTR_FAN(1),
1609         SENSOR_ATTR_FAN(2),
1610         SENSOR_ATTR_FAN(3),
1611         SENSOR_ATTR_FAN(4),
1612         SENSOR_ATTR_FAN(5),
1613         SENSOR_ATTR_FAN(6),
1614         SENSOR_ATTR_FAN(7),
1615         SENSOR_ATTR_FAN(8),
1616         SENSOR_ATTR_FAN(9),
1617         SENSOR_ATTR_FAN(10),
1618         SENSOR_ATTR_FAN(11),
1619         SENSOR_ATTR_FAN(12),
1620         SENSOR_ATTR_FAN(13),
1621         SENSOR_ATTR_FAN(14),
1622 };
1623
1624 static const struct sensor_device_attribute_2 w83795_temp[][29] = {
1625         SENSOR_ATTR_TEMP(1),
1626         SENSOR_ATTR_TEMP(2),
1627         SENSOR_ATTR_TEMP(3),
1628         SENSOR_ATTR_TEMP(4),
1629         SENSOR_ATTR_TEMP(5),
1630         SENSOR_ATTR_TEMP(6),
1631 };
1632
1633 static const struct sensor_device_attribute_2 w83795_dts[][8] = {
1634         SENSOR_ATTR_DTS(7),
1635         SENSOR_ATTR_DTS(8),
1636         SENSOR_ATTR_DTS(9),
1637         SENSOR_ATTR_DTS(10),
1638         SENSOR_ATTR_DTS(11),
1639         SENSOR_ATTR_DTS(12),
1640         SENSOR_ATTR_DTS(13),
1641         SENSOR_ATTR_DTS(14),
1642 };
1643
1644 static const struct sensor_device_attribute_2 w83795_pwm[][7] = {
1645         SENSOR_ATTR_PWM(1),
1646         SENSOR_ATTR_PWM(2),
1647         SENSOR_ATTR_PWM(3),
1648         SENSOR_ATTR_PWM(4),
1649         SENSOR_ATTR_PWM(5),
1650         SENSOR_ATTR_PWM(6),
1651         SENSOR_ATTR_PWM(7),
1652         SENSOR_ATTR_PWM(8),
1653 };
1654
1655 static const struct sensor_device_attribute_2 sda_single_files[] = {
1656         SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep,
1657                       store_chassis_clear, ALARM_STATUS, 46),
1658         SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
1659                       store_beep, BEEP_ENABLE, 47),
1660         SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1661                 store_fanin, FANIN_TOL, NOT_USED),
1662         SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1663                       store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1664         SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1665                       store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1666         SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1667                       store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1668 };
1669
1670 /*
1671  * Driver interface
1672  */
1673
1674 static void w83795_init_client(struct i2c_client *client)
1675 {
1676         struct w83795_data *data = i2c_get_clientdata(client);
1677         static const u16 clkin[4] = {   /* in kHz */
1678                 14318, 24000, 33333, 48000
1679         };
1680         u8 config;
1681
1682         if (reset)
1683                 w83795_write(client, W83795_REG_CONFIG, 0x80);
1684
1685         /* Start monitoring if needed */
1686         config = w83795_read(client, W83795_REG_CONFIG);
1687         if (!(config & W83795_REG_CONFIG_START)) {
1688                 dev_info(&client->dev, "Enabling monitoring operations\n");
1689                 w83795_write(client, W83795_REG_CONFIG,
1690                              config | W83795_REG_CONFIG_START);
1691         }
1692
1693         data->clkin = clkin[(config >> 3) & 0x3];
1694         dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin);
1695 }
1696
1697 static int w83795_get_device_id(struct i2c_client *client)
1698 {
1699         int device_id;
1700
1701         device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID);
1702
1703         /* Special case for rev. A chips; can't be checked first because later
1704            revisions emulate this for compatibility */
1705         if (device_id < 0 || (device_id & 0xf0) != 0x50) {
1706                 int alt_id;
1707
1708                 alt_id = i2c_smbus_read_byte_data(client,
1709                                                   W83795_REG_DEVICEID_A);
1710                 if (alt_id == 0x50)
1711                         device_id = alt_id;
1712         }
1713
1714         return device_id;
1715 }
1716
1717 /* Return 0 if detection is successful, -ENODEV otherwise */
1718 static int w83795_detect(struct i2c_client *client,
1719                          struct i2c_board_info *info)
1720 {
1721         int bank, vendor_id, device_id, expected, i2c_addr, config;
1722         struct i2c_adapter *adapter = client->adapter;
1723         unsigned short address = client->addr;
1724         const char *chip_name;
1725
1726         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1727                 return -ENODEV;
1728         bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1729         if (bank < 0 || (bank & 0x7c)) {
1730                 dev_dbg(&adapter->dev,
1731                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1732                         address, "bank");
1733                 return -ENODEV;
1734         }
1735
1736         /* Check Nuvoton vendor ID */
1737         vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID);
1738         expected = bank & 0x80 ? 0x5c : 0xa3;
1739         if (vendor_id != expected) {
1740                 dev_dbg(&adapter->dev,
1741                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1742                         address, "vendor id");
1743                 return -ENODEV;
1744         }
1745
1746         /* Check device ID */
1747         device_id = w83795_get_device_id(client) |
1748                     (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8);
1749         if ((device_id >> 4) != 0x795) {
1750                 dev_dbg(&adapter->dev,
1751                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1752                         address, "device id\n");
1753                 return -ENODEV;
1754         }
1755
1756         /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1757            should match */
1758         if ((bank & 0x07) == 0) {
1759                 i2c_addr = i2c_smbus_read_byte_data(client,
1760                                                     W83795_REG_I2C_ADDR);
1761                 if ((i2c_addr & 0x7f) != address) {
1762                         dev_dbg(&adapter->dev,
1763                                 "w83795: Detection failed at addr 0x%02hx, "
1764                                 "check %s\n", address, "i2c addr");
1765                         return -ENODEV;
1766                 }
1767         }
1768
1769         /* Check 795 chip type: 795G or 795ADG
1770            Usually we don't write to chips during detection, but here we don't
1771            quite have the choice; hopefully it's OK, we are about to return
1772            success anyway */
1773         if ((bank & 0x07) != 0)
1774                 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
1775                                           bank & ~0x07);
1776         config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG);
1777         if (config & W83795_REG_CONFIG_CONFIG48)
1778                 chip_name = "w83795adg";
1779         else
1780                 chip_name = "w83795g";
1781
1782         strlcpy(info->type, chip_name, I2C_NAME_SIZE);
1783         dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name,
1784                  'A' + (device_id & 0xf), address);
1785
1786         return 0;
1787 }
1788
1789 static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
1790                                const struct device_attribute *))
1791 {
1792         struct w83795_data *data = dev_get_drvdata(dev);
1793         int err, i, j;
1794
1795         for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
1796                 if (!(data->has_in & (1 << i)))
1797                         continue;
1798                 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) {
1799                         err = fn(dev, &w83795_in[i][j].dev_attr);
1800                         if (err)
1801                                 return err;
1802                 }
1803         }
1804
1805         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
1806                 if (!(data->has_fan & (1 << i)))
1807                         continue;
1808                 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) {
1809                         err = fn(dev, &w83795_fan[i][j].dev_attr);
1810                         if (err)
1811                                 return err;
1812                 }
1813         }
1814
1815         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1816                 err = fn(dev, &sda_single_files[i].dev_attr);
1817                 if (err)
1818                         return err;
1819         }
1820
1821         for (i = 0; i < data->has_pwm; i++) {
1822                 for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) {
1823                         err = fn(dev, &w83795_pwm[i][j].dev_attr);
1824                         if (err)
1825                                 return err;
1826                 }
1827         }
1828
1829         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
1830                 if (!(data->has_temp & (1 << i)))
1831                         continue;
1832                 for (j = 0; j < ARRAY_SIZE(w83795_temp[0]); j++) {
1833                         err = fn(dev, &w83795_temp[i][j].dev_attr);
1834                         if (err)
1835                                 return err;
1836                 }
1837         }
1838
1839         if (data->enable_dts != 0) {
1840                 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
1841                         if (!(data->has_dts & (1 << i)))
1842                                 continue;
1843                         for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) {
1844                                 err = fn(dev, &w83795_dts[i][j].dev_attr);
1845                                 if (err)
1846                                         return err;
1847                         }
1848                 }
1849         }
1850
1851         return 0;
1852 }
1853
1854 /* We need a wrapper that fits in w83795_handle_files */
1855 static int device_remove_file_wrapper(struct device *dev,
1856                                       const struct device_attribute *attr)
1857 {
1858         device_remove_file(dev, attr);
1859         return 0;
1860 }
1861
1862 static void w83795_check_dynamic_in_limits(struct i2c_client *client)
1863 {
1864         struct w83795_data *data = i2c_get_clientdata(client);
1865         u8 vid_ctl;
1866         int i, err_max, err_min;
1867
1868         vid_ctl = w83795_read(client, W83795_REG_VID_CTRL);
1869
1870         /* Return immediately if VRM isn't configured */
1871         if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07)
1872                 return;
1873
1874         data->has_dyn_in = (vid_ctl >> 3) & 0x07;
1875         for (i = 0; i < 2; i++) {
1876                 if (!(data->has_dyn_in & (1 << i)))
1877                         continue;
1878
1879                 /* Voltage limits in dynamic mode, switch to read-only */
1880                 err_max = sysfs_chmod_file(&client->dev.kobj,
1881                                            &w83795_in[i][2].dev_attr.attr,
1882                                            S_IRUGO);
1883                 err_min = sysfs_chmod_file(&client->dev.kobj,
1884                                            &w83795_in[i][3].dev_attr.attr,
1885                                            S_IRUGO);
1886                 if (err_max || err_min)
1887                         dev_warn(&client->dev, "Failed to set in%d limits "
1888                                  "read-only (%d, %d)\n", i, err_max, err_min);
1889                 else
1890                         dev_info(&client->dev, "in%d limits set dynamically "
1891                                  "from VID\n", i);
1892         }
1893 }
1894
1895 /* Check pins that can be used for either temperature or voltage monitoring */
1896 static void w83795_apply_temp_config(struct w83795_data *data, u8 config,
1897                                      int temp_chan, int in_chan)
1898 {
1899         /* config is a 2-bit value */
1900         switch (config) {
1901         case 0x2: /* Voltage monitoring */
1902                 data->has_in |= 1 << in_chan;
1903                 break;
1904         case 0x1: /* Thermal diode */
1905                 if (temp_chan >= 4)
1906                         break;
1907                 data->temp_mode |= 1 << temp_chan;
1908                 /* fall through */
1909         case 0x3: /* Thermistor */
1910                 data->has_temp |= 1 << temp_chan;
1911                 break;
1912         }
1913 }
1914
1915 static int w83795_probe(struct i2c_client *client,
1916                         const struct i2c_device_id *id)
1917 {
1918         int i;
1919         u8 tmp;
1920         struct device *dev = &client->dev;
1921         struct w83795_data *data;
1922         int err;
1923
1924         data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL);
1925         if (!data) {
1926                 err = -ENOMEM;
1927                 goto exit;
1928         }
1929
1930         i2c_set_clientdata(client, data);
1931         data->chip_type = id->driver_data;
1932         data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1933         mutex_init(&data->update_lock);
1934
1935         /* Initialize the chip */
1936         w83795_init_client(client);
1937
1938         /* Check which voltages and fans are present */
1939         data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1)
1940                      | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8);
1941         data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1)
1942                       | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8);
1943
1944         /* Check which analog temperatures and extra voltages are present */
1945         tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
1946         if (tmp & 0x20)
1947                 data->enable_dts = 1;
1948         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16);
1949         w83795_apply_temp_config(data, tmp & 0x3, 4, 15);
1950         tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1951         w83795_apply_temp_config(data, tmp >> 6, 3, 20);
1952         w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19);
1953         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18);
1954         w83795_apply_temp_config(data, tmp & 0x3, 0, 17);
1955
1956         /* Check DTS enable status */
1957         if (data->enable_dts) {
1958                 if (1 & w83795_read(client, W83795_REG_DTSC))
1959                         data->enable_dts |= 2;
1960                 data->has_dts = w83795_read(client, W83795_REG_DTSE);
1961         }
1962
1963         /* Report PECI Tbase values */
1964         if (data->enable_dts == 1) {
1965                 for (i = 0; i < 8; i++) {
1966                         if (!(data->has_dts & (1 << i)))
1967                                 continue;
1968                         tmp = w83795_read(client, W83795_REG_PECI_TBASE(i));
1969                         dev_info(&client->dev,
1970                                  "PECI agent %d Tbase temperature: %u\n",
1971                                  i + 1, (unsigned int)tmp & 0x7f);
1972                 }
1973         }
1974
1975         /* First update the voltages measured value and limits */
1976         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
1977                 if (!(data->has_in & (1 << i)))
1978                         continue;
1979                 data->in[i][IN_MAX] =
1980                         w83795_read(client, W83795_REG_IN[i][IN_MAX]);
1981                 data->in[i][IN_LOW] =
1982                         w83795_read(client, W83795_REG_IN[i][IN_LOW]);
1983                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
1984                 tmp |= (w83795_read(client, W83795_REG_VRLSB)
1985                         >> VRLSB_SHIFT) & 0x03;
1986                 data->in[i][IN_READ] = tmp;
1987         }
1988         for (i = 0; i < IN_LSB_REG_NUM; i++) {
1989                 if ((i == 2 && data->chip_type == w83795adg) ||
1990                     (i >= 4 && !(data->has_in & (1 << (i + 11)))))
1991                         continue;
1992                 data->in_lsb[i][IN_MAX] =
1993                         w83795_read(client, IN_LSB_REG(i, IN_MAX));
1994                 data->in_lsb[i][IN_LOW] =
1995                         w83795_read(client, IN_LSB_REG(i, IN_LOW));
1996         }
1997         data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
1998
1999         /* First update fan and limits */
2000         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
2001                 /* Each register contains LSB for 2 fans, but we want to
2002                  * read it only once to save time */
2003                 if ((i & 1) == 0 && (data->has_fan & (3 << i)))
2004                         tmp = w83795_read(client, W83795_REG_FAN_MIN_LSB(i));
2005
2006                 if (!(data->has_fan & (1 << i)))
2007                         continue;
2008                 data->fan_min[i] =
2009                         w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
2010                 data->fan_min[i] |=
2011                         (tmp >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F;
2012                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
2013                 data->fan[i] |=
2014                   (w83795_read(client, W83795_REG_VRLSB) >> 4) & 0x0F;
2015         }
2016
2017         /* temperature and limits */
2018         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
2019                 if (!(data->has_temp & (1 << i)))
2020                         continue;
2021                 data->temp[i][TEMP_CRIT] =
2022                         w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT]);
2023                 data->temp[i][TEMP_CRIT_HYST] =
2024                         w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT_HYST]);
2025                 data->temp[i][TEMP_WARN] =
2026                         w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN]);
2027                 data->temp[i][TEMP_WARN_HYST] =
2028                         w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN_HYST]);
2029                 data->temp[i][TEMP_READ] =
2030                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
2031                 data->temp_read_vrlsb[i] =
2032                         w83795_read(client, W83795_REG_VRLSB);
2033         }
2034
2035         /* dts temperature and limits */
2036         if (data->enable_dts != 0) {
2037                 data->dts_ext[DTS_CRIT] =
2038                         w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT));
2039                 data->dts_ext[DTS_CRIT_HYST] =
2040                         w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT_HYST));
2041                 data->dts_ext[DTS_WARN] =
2042                         w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN));
2043                 data->dts_ext[DTS_WARN_HYST] =
2044                         w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN_HYST));
2045                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
2046                         if (!(data->has_dts & (1 << i)))
2047                                 continue;
2048                         data->dts[i] = w83795_read(client, W83795_REG_DTS(i));
2049                         data->dts_read_vrlsb[i] =
2050                                 w83795_read(client, W83795_REG_VRLSB);
2051                 }
2052         }
2053
2054         /* First update temp source selction */
2055         for (i = 0; i < 3; i++)
2056                 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
2057
2058         /* pwm and smart fan */
2059         if (data->chip_type == w83795g)
2060                 data->has_pwm = 8;
2061         else
2062                 data->has_pwm = 2;
2063         data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
2064         data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
2065         for (i = 0; i < W83795_REG_TEMP_NUM; i++)
2066                 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
2067         data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
2068         for (i = 0; i < data->has_pwm; i++) {
2069                 for (tmp = 0; tmp < 5; tmp++) {
2070                         data->pwm[i][tmp] =
2071                                 w83795_read(client, W83795_REG_PWM(i, tmp));
2072                 }
2073         }
2074         for (i = 0; i < 8; i++) {
2075                 data->target_speed[i] =
2076                         w83795_read(client, W83795_REG_FTSH(i)) << 4;
2077                 data->target_speed[i] |=
2078                         w83795_read(client, W83795_REG_FTSL(i)) >> 4;
2079         }
2080         data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
2081
2082         for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
2083                 data->pwm_temp[i][TEMP_PWM_TTTI] =
2084                         w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
2085                 data->pwm_temp[i][TEMP_PWM_CTFS] =
2086                         w83795_read(client, W83795_REG_CTFS(i));
2087                 tmp = w83795_read(client, W83795_REG_HT(i));
2088                 data->pwm_temp[i][TEMP_PWM_HCT] = (tmp >> 4) & 0x0f;
2089                 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
2090         }
2091         for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
2092                 for (tmp = 0; tmp < 7; tmp++) {
2093                         data->sf4_reg[i][SF4_TEMP][tmp] =
2094                                 w83795_read(client,
2095                                             W83795_REG_SF4_TEMP(i, tmp));
2096                         data->sf4_reg[i][SF4_PWM][tmp] =
2097                                 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
2098                 }
2099         }
2100
2101         /* Setup PWM Register */
2102         for (i = 0; i < 3; i++) {
2103                 data->setup_pwm[i] =
2104                         w83795_read(client, W83795_REG_SETUP_PWM(i));
2105         }
2106
2107         /* alarm and beep */
2108         for (i = 0; i < ALARM_BEEP_REG_NUM; i++) {
2109                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
2110                 data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i));
2111         }
2112
2113         err = w83795_handle_files(dev, device_create_file);
2114         if (err)
2115                 goto exit_remove;
2116
2117         if (data->chip_type == w83795g)
2118                 w83795_check_dynamic_in_limits(client);
2119
2120         data->hwmon_dev = hwmon_device_register(dev);
2121         if (IS_ERR(data->hwmon_dev)) {
2122                 err = PTR_ERR(data->hwmon_dev);
2123                 goto exit_remove;
2124         }
2125
2126         return 0;
2127
2128 exit_remove:
2129         w83795_handle_files(dev, device_remove_file_wrapper);
2130         kfree(data);
2131 exit:
2132         return err;
2133 }
2134
2135 static int w83795_remove(struct i2c_client *client)
2136 {
2137         struct w83795_data *data = i2c_get_clientdata(client);
2138
2139         hwmon_device_unregister(data->hwmon_dev);
2140         w83795_handle_files(&client->dev, device_remove_file_wrapper);
2141         kfree(data);
2142
2143         return 0;
2144 }
2145
2146
2147 static const struct i2c_device_id w83795_id[] = {
2148         { "w83795g", w83795g },
2149         { "w83795adg", w83795adg },
2150         { }
2151 };
2152 MODULE_DEVICE_TABLE(i2c, w83795_id);
2153
2154 static struct i2c_driver w83795_driver = {
2155         .driver = {
2156                    .name = "w83795",
2157         },
2158         .probe          = w83795_probe,
2159         .remove         = w83795_remove,
2160         .id_table       = w83795_id,
2161
2162         .class          = I2C_CLASS_HWMON,
2163         .detect         = w83795_detect,
2164         .address_list   = normal_i2c,
2165 };
2166
2167 static int __init sensors_w83795_init(void)
2168 {
2169         return i2c_add_driver(&w83795_driver);
2170 }
2171
2172 static void __exit sensors_w83795_exit(void)
2173 {
2174         i2c_del_driver(&w83795_driver);
2175 }
2176
2177 MODULE_AUTHOR("Wei Song");
2178 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2179 MODULE_LICENSE("GPL");
2180
2181 module_init(sensors_w83795_init);
2182 module_exit(sensors_w83795_exit);