drivers/hwmon/w83792d.c

   1 /*
   2  * w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
   3  *             monitoring
   4  * Copyright (C) 2004, 2005 Winbond Electronics Corp.
   5  *                          Shane Huang,
   6  *                          Rudolf Marek <r.marek@assembler.cz>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  * Note:
  23  * 1. This driver is only for 2.6 kernel, 2.4 kernel need a different driver.
  24  * 2. This driver is only for Winbond W83792D C version device, there
  25  *     are also some motherboards with B version W83792D device. The
  26  *     calculation method to in6-in7(measured value, limits) is a little
  27  *     different between C and B version. C or B version can be identified
  28  *     by CR[0x49h].
  29  */
  30
  31 /*
  32  * Supports following chips:
  33  *
  34  * Chip         #vin    #fanin  #pwm    #temp   wchipid vendid  i2c     ISA
  35  * w83792d      9       7       7       3       0x7a    0x5ca3  yes     no
  36  */
  37
  38 #include <linux/module.h>
  39 #include <linux/init.h>
  40 #include <linux/slab.h>
  41 #include <linux/i2c.h>
  42 #include <linux/hwmon.h>
  43 #include <linux/hwmon-sysfs.h>
  44 #include <linux/err.h>
  45 #include <linux/mutex.h>
  46 #include <linux/sysfs.h>
  47 #include <linux/jiffies.h>
  48
  49 /* Addresses to scan */
  50 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
  51                                                 I2C_CLIENT_END };
  52
  53 /* Insmod parameters */
  54
  55 static unsigned short force_subclients[4];
  56 module_param_array(force_subclients, short, NULL, 0);
  57 MODULE_PARM_DESC(force_subclients,
  58                  "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
  59
  60 static bool init;
  61 module_param(init, bool, 0);
  62 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
  63
  64 /* The W83792D registers */
  65 static const u8 W83792D_REG_IN[9] = {
  66         0x20,   /* Vcore A in DataSheet */
  67         0x21,   /* Vcore B in DataSheet */
  68         0x22,   /* VIN0 in DataSheet */
  69         0x23,   /* VIN1 in DataSheet */
  70         0x24,   /* VIN2 in DataSheet */
  71         0x25,   /* VIN3 in DataSheet */
  72         0x26,   /* 5VCC in DataSheet */
  73         0xB0,   /* 5VSB in DataSheet */
  74         0xB1    /* VBAT in DataSheet */
  75 };
  76 #define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
  77 #define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
  78 static const u8 W83792D_REG_IN_MAX[9] = {
  79         0x2B,   /* Vcore A High Limit in DataSheet */
  80         0x2D,   /* Vcore B High Limit in DataSheet */
  81         0x2F,   /* VIN0 High Limit in DataSheet */
  82         0x31,   /* VIN1 High Limit in DataSheet */
  83         0x33,   /* VIN2 High Limit in DataSheet */
  84         0x35,   /* VIN3 High Limit in DataSheet */
  85         0x37,   /* 5VCC High Limit in DataSheet */
  86         0xB4,   /* 5VSB High Limit in DataSheet */
  87         0xB6    /* VBAT High Limit in DataSheet */
  88 };
  89 static const u8 W83792D_REG_IN_MIN[9] = {
  90         0x2C,   /* Vcore A Low Limit in DataSheet */
  91         0x2E,   /* Vcore B Low Limit in DataSheet */
  92         0x30,   /* VIN0 Low Limit in DataSheet */
  93         0x32,   /* VIN1 Low Limit in DataSheet */
  94         0x34,   /* VIN2 Low Limit in DataSheet */
  95         0x36,   /* VIN3 Low Limit in DataSheet */
  96         0x38,   /* 5VCC Low Limit in DataSheet */
  97         0xB5,   /* 5VSB Low Limit in DataSheet */
  98         0xB7    /* VBAT Low Limit in DataSheet */
  99 };
 100 static const u8 W83792D_REG_FAN[7] = {
 101         0x28,   /* FAN 1 Count in DataSheet */
 102         0x29,   /* FAN 2 Count in DataSheet */
 103         0x2A,   /* FAN 3 Count in DataSheet */
 104         0xB8,   /* FAN 4 Count in DataSheet */
 105         0xB9,   /* FAN 5 Count in DataSheet */
 106         0xBA,   /* FAN 6 Count in DataSheet */
 107         0xBE    /* FAN 7 Count in DataSheet */
 108 };
 109 static const u8 W83792D_REG_FAN_MIN[7] = {
 110         0x3B,   /* FAN 1 Count Low Limit in DataSheet */
 111         0x3C,   /* FAN 2 Count Low Limit in DataSheet */
 112         0x3D,   /* FAN 3 Count Low Limit in DataSheet */
 113         0xBB,   /* FAN 4 Count Low Limit in DataSheet */
 114         0xBC,   /* FAN 5 Count Low Limit in DataSheet */
 115         0xBD,   /* FAN 6 Count Low Limit in DataSheet */
 116         0xBF    /* FAN 7 Count Low Limit in DataSheet */
 117 };
 118 #define W83792D_REG_FAN_CFG 0x84        /* FAN Configuration in DataSheet */
 119 static const u8 W83792D_REG_FAN_DIV[4] = {
 120         0x47,   /* contains FAN2 and FAN1 Divisor */
 121         0x5B,   /* contains FAN4 and FAN3 Divisor */
 122         0x5C,   /* contains FAN6 and FAN5 Divisor */
 123         0x9E    /* contains FAN7 Divisor. */
 124 };
 125 static const u8 W83792D_REG_PWM[7] = {
 126         0x81,   /* FAN 1 Duty Cycle, be used to control */
 127         0x83,   /* FAN 2 Duty Cycle, be used to control */
 128         0x94,   /* FAN 3 Duty Cycle, be used to control */
 129         0xA3,   /* FAN 4 Duty Cycle, be used to control */
 130         0xA4,   /* FAN 5 Duty Cycle, be used to control */
 131         0xA5,   /* FAN 6 Duty Cycle, be used to control */
 132         0xA6    /* FAN 7 Duty Cycle, be used to control */
 133 };
 134 #define W83792D_REG_BANK                0x4E
 135 #define W83792D_REG_TEMP2_CONFIG        0xC2
 136 #define W83792D_REG_TEMP3_CONFIG        0xCA
 137
 138 static const u8 W83792D_REG_TEMP1[3] = {
 139         0x27,   /* TEMP 1 in DataSheet */
 140         0x39,   /* TEMP 1 Over in DataSheet */
 141         0x3A,   /* TEMP 1 Hyst in DataSheet */
 142 };
 143
 144 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
 145         { 0xC0,         /* TEMP 2 in DataSheet */
 146           0xC1,         /* TEMP 2(0.5 deg) in DataSheet */
 147           0xC5,         /* TEMP 2 Over High part in DataSheet */
 148           0xC6,         /* TEMP 2 Over Low part in DataSheet */
 149           0xC3,         /* TEMP 2 Thyst High part in DataSheet */
 150           0xC4 },       /* TEMP 2 Thyst Low part in DataSheet */
 151         { 0xC8,         /* TEMP 3 in DataSheet */
 152           0xC9,         /* TEMP 3(0.5 deg) in DataSheet */
 153           0xCD,         /* TEMP 3 Over High part in DataSheet */
 154           0xCE,         /* TEMP 3 Over Low part in DataSheet */
 155           0xCB,         /* TEMP 3 Thyst High part in DataSheet */
 156           0xCC }        /* TEMP 3 Thyst Low part in DataSheet */
 157 };
 158
 159 static const u8 W83792D_REG_THERMAL[3] = {
 160         0x85,   /* SmartFanI: Fan1 target value */
 161         0x86,   /* SmartFanI: Fan2 target value */
 162         0x96    /* SmartFanI: Fan3 target value */
 163 };
 164
 165 static const u8 W83792D_REG_TOLERANCE[3] = {
 166         0x87,   /* (bit3-0)SmartFan Fan1 tolerance */
 167         0x87,   /* (bit7-4)SmartFan Fan2 tolerance */
 168         0x97    /* (bit3-0)SmartFan Fan3 tolerance */
 169 };
 170
 171 static const u8 W83792D_REG_POINTS[3][4] = {
 172         { 0x85,         /* SmartFanII: Fan1 temp point 1 */
 173           0xE3,         /* SmartFanII: Fan1 temp point 2 */
 174           0xE4,         /* SmartFanII: Fan1 temp point 3 */
 175           0xE5 },       /* SmartFanII: Fan1 temp point 4 */
 176         { 0x86,         /* SmartFanII: Fan2 temp point 1 */
 177           0xE6,         /* SmartFanII: Fan2 temp point 2 */
 178           0xE7,         /* SmartFanII: Fan2 temp point 3 */
 179           0xE8 },       /* SmartFanII: Fan2 temp point 4 */
 180         { 0x96,         /* SmartFanII: Fan3 temp point 1 */
 181           0xE9,         /* SmartFanII: Fan3 temp point 2 */
 182           0xEA,         /* SmartFanII: Fan3 temp point 3 */
 183           0xEB }        /* SmartFanII: Fan3 temp point 4 */
 184 };
 185
 186 static const u8 W83792D_REG_LEVELS[3][4] = {
 187         { 0x88,         /* (bit3-0) SmartFanII: Fan1 Non-Stop */
 188           0x88,         /* (bit7-4) SmartFanII: Fan1 Level 1 */
 189           0xE0,         /* (bit7-4) SmartFanII: Fan1 Level 2 */
 190           0xE0 },       /* (bit3-0) SmartFanII: Fan1 Level 3 */
 191         { 0x89,         /* (bit3-0) SmartFanII: Fan2 Non-Stop */
 192           0x89,         /* (bit7-4) SmartFanII: Fan2 Level 1 */
 193           0xE1,         /* (bit7-4) SmartFanII: Fan2 Level 2 */
 194           0xE1 },       /* (bit3-0) SmartFanII: Fan2 Level 3 */
 195         { 0x98,         /* (bit3-0) SmartFanII: Fan3 Non-Stop */
 196           0x98,         /* (bit7-4) SmartFanII: Fan3 Level 1 */
 197           0xE2,         /* (bit7-4) SmartFanII: Fan3 Level 2 */
 198           0xE2 }        /* (bit3-0) SmartFanII: Fan3 Level 3 */
 199 };
 200
 201 #define W83792D_REG_GPIO_EN             0x1A
 202 #define W83792D_REG_CONFIG              0x40
 203 #define W83792D_REG_VID_FANDIV          0x47
 204 #define W83792D_REG_CHIPID              0x49
 205 #define W83792D_REG_WCHIPID             0x58
 206 #define W83792D_REG_CHIPMAN             0x4F
 207 #define W83792D_REG_PIN                 0x4B
 208 #define W83792D_REG_I2C_SUBADDR         0x4A
 209
 210 #define W83792D_REG_ALARM1 0xA9         /* realtime status register1 */
 211 #define W83792D_REG_ALARM2 0xAA         /* realtime status register2 */
 212 #define W83792D_REG_ALARM3 0xAB         /* realtime status register3 */
 213 #define W83792D_REG_CHASSIS 0x42        /* Bit 5: Case Open status bit */
 214 #define W83792D_REG_CHASSIS_CLR 0x44    /* Bit 7: Case Open CLR_CHS/Reset bit */
 215
 216 /* control in0/in1 's limit modifiability */
 217 #define W83792D_REG_VID_IN_B            0x17
 218
 219 #define W83792D_REG_VBAT                0x5D
 220 #define W83792D_REG_I2C_ADDR            0x48
 221
 222 /*
 223  * Conversions. Rounding and limit checking is only done on the TO_REG
 224  * variants. Note that you should be a bit careful with which arguments
 225  * these macros are called: arguments may be evaluated more than once.
 226  * Fixing this is just not worth it.
 227  */
 228 #define IN_FROM_REG(nr, val) (((nr) <= 1) ? ((val) * 2) : \
 229                 ((((nr) == 6) || ((nr) == 7)) ? ((val) * 6) : ((val) * 4)))
 230 #define IN_TO_REG(nr, val) (((nr) <= 1) ? ((val) / 2) : \
 231                 ((((nr) == 6) || ((nr) == 7)) ? ((val) / 6) : ((val) / 4)))
 232
 233 static inline u8
 234 FAN_TO_REG(long rpm, int div)
 235 {
 236         if (rpm == 0)
 237                 return 255;
 238         rpm = clamp_val(rpm, 1, 1000000);
 239         return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 240 }
 241
 242 #define FAN_FROM_REG(val, div)  ((val) == 0   ? -1 : \
 243                                 ((val) == 255 ? 0 : \
 244                                                 1350000 / ((val) * (div))))
 245
 246 /* for temp1 */
 247 #define TEMP1_TO_REG(val)       (clamp_val(((val) < 0 ? (val) + 0x100 * 1000 \
 248                                                       : (val)) / 1000, 0, 0xff))
 249 #define TEMP1_FROM_REG(val)     (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 250 /* for temp2 and temp3, because they need additional resolution */
 251 #define TEMP_ADD_FROM_REG(val1, val2) \
 252         ((((val1) & 0x80 ? (val1)-0x100 \
 253                 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
 254 #define TEMP_ADD_TO_REG_HIGH(val) \
 255         (clamp_val(((val) < 0 ? (val) + 0x100 * 1000 : (val)) / 1000, 0, 0xff))
 256 #define TEMP_ADD_TO_REG_LOW(val)        ((val%1000) ? 0x80 : 0x00)
 257
 258 #define DIV_FROM_REG(val)               (1 << (val))
 259
 260 static inline u8
 261 DIV_TO_REG(long val)
 262 {
 263         int i;
 264         val = clamp_val(val, 1, 128) >> 1;
 265         for (i = 0; i < 7; i++) {
 266                 if (val == 0)
 267                         break;
 268                 val >>= 1;
 269         }
 270         return (u8)i;
 271 }
 272
 273 struct w83792d_data {
 274         struct device *hwmon_dev;
 275
 276         struct mutex update_lock;
 277         char valid;             /* !=0 if following fields are valid */
 278         unsigned long last_updated;     /* In jiffies */
 279
 280         /* array of 2 pointers to subclients */
 281         struct i2c_client *lm75[2];
 282
 283         u8 in[9];               /* Register value */
 284         u8 in_max[9];           /* Register value */
 285         u8 in_min[9];           /* Register value */
 286         u16 low_bits;           /* Additional resolution to voltage in6-0 */
 287         u8 fan[7];              /* Register value */
 288         u8 fan_min[7];          /* Register value */
 289         u8 temp1[3];            /* current, over, thyst */
 290         u8 temp_add[2][6];      /* Register value */
 291         u8 fan_div[7];          /* Register encoding, shifted right */
 292         u8 pwm[7];              /* The 7 PWM outputs */
 293         u8 pwmenable[3];
 294         u32 alarms;             /* realtime status register encoding,combined */
 295         u8 chassis;             /* Chassis status */
 296         u8 thermal_cruise[3];   /* Smart FanI: Fan1,2,3 target value */
 297         u8 tolerance[3];        /* Fan1,2,3 tolerance(Smart Fan I/II) */
 298         u8 sf2_points[3][4];    /* Smart FanII: Fan1,2,3 temperature points */
 299         u8 sf2_levels[3][4];    /* Smart FanII: Fan1,2,3 duty cycle levels */
 300 };
 301
 302 static int w83792d_probe(struct i2c_client *client,
 303                          const struct i2c_device_id *id);
 304 static int w83792d_detect(struct i2c_client *client,
 305                           struct i2c_board_info *info);
 306 static int w83792d_remove(struct i2c_client *client);
 307 static struct w83792d_data *w83792d_update_device(struct device *dev);
 308
 309 #ifdef DEBUG
 310 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 311 #endif
 312
 313 static void w83792d_init_client(struct i2c_client *client);
 314
 315 static const struct i2c_device_id w83792d_id[] = {
 316         { "w83792d", 0 },
 317         { }
 318 };
 319 MODULE_DEVICE_TABLE(i2c, w83792d_id);
 320
 321 static struct i2c_driver w83792d_driver = {
 322         .class          = I2C_CLASS_HWMON,
 323         .driver = {
 324                 .name = "w83792d",
 325         },
 326         .probe          = w83792d_probe,
 327         .remove         = w83792d_remove,
 328         .id_table       = w83792d_id,
 329         .detect         = w83792d_detect,
 330         .address_list   = normal_i2c,
 331 };
 332
 333 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
 334 {
 335         /* in7 and in8 do not have low bits, but the formula still works */
 336         return (data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03);
 337 }
 338
 339 /*
 340  * The SMBus locks itself. The Winbond W83792D chip has a bank register,
 341  * but the driver only accesses registers in bank 0, so we don't have
 342  * to switch banks and lock access between switches.
 343  */
 344 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
 345 {
 346         return i2c_smbus_read_byte_data(client, reg);
 347 }
 348
 349 static inline int
 350 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
 351 {
 352         return i2c_smbus_write_byte_data(client, reg, value);
 353 }
 354
 355 /* following are the sysfs callback functions */
 356 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 357                         char *buf)
 358 {
 359         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 360         int nr = sensor_attr->index;
 361         struct w83792d_data *data = w83792d_update_device(dev);
 362         return sprintf(buf, "%ld\n",
 363                        IN_FROM_REG(nr, in_count_from_reg(nr, data)));
 364 }
 365
 366 #define show_in_reg(reg) \
 367 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 368                         char *buf) \
 369 { \
 370         struct sensor_device_attribute *sensor_attr \
 371                 = to_sensor_dev_attr(attr); \
 372         int nr = sensor_attr->index; \
 373         struct w83792d_data *data = w83792d_update_device(dev); \
 374         return sprintf(buf, "%ld\n", \
 375                        (long)(IN_FROM_REG(nr, data->reg[nr]) * 4)); \
 376 }
 377
 378 show_in_reg(in_min);
 379 show_in_reg(in_max);
 380
 381 #define store_in_reg(REG, reg) \
 382 static ssize_t store_in_##reg(struct device *dev, \
 383                                 struct device_attribute *attr, \
 384                                 const char *buf, size_t count) \
 385 { \
 386         struct sensor_device_attribute *sensor_attr \
 387                         = to_sensor_dev_attr(attr); \
 388         int nr = sensor_attr->index; \
 389         struct i2c_client *client = to_i2c_client(dev); \
 390         struct w83792d_data *data = i2c_get_clientdata(client); \
 391         unsigned long val; \
 392         int err = kstrtoul(buf, 10, &val); \
 393         if (err) \
 394                 return err; \
 395         mutex_lock(&data->update_lock); \
 396         data->in_##reg[nr] = clamp_val(IN_TO_REG(nr, val) / 4, 0, 255); \
 397         w83792d_write_value(client, W83792D_REG_IN_##REG[nr], \
 398                             data->in_##reg[nr]); \
 399         mutex_unlock(&data->update_lock); \
 400          \
 401         return count; \
 402 }
 403 store_in_reg(MIN, min);
 404 store_in_reg(MAX, max);
 405
 406 #define show_fan_reg(reg) \
 407 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 408                         char *buf) \
 409 { \
 410         struct sensor_device_attribute *sensor_attr \
 411                         = to_sensor_dev_attr(attr); \
 412         int nr = sensor_attr->index - 1; \
 413         struct w83792d_data *data = w83792d_update_device(dev); \
 414         return sprintf(buf, "%d\n", \
 415                 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 416 }
 417
 418 show_fan_reg(fan);
 419 show_fan_reg(fan_min);
 420
 421 static ssize_t
 422 store_fan_min(struct device *dev, struct device_attribute *attr,
 423                 const char *buf, size_t count)
 424 {
 425         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 426         int nr = sensor_attr->index - 1;
 427         struct i2c_client *client = to_i2c_client(dev);
 428         struct w83792d_data *data = i2c_get_clientdata(client);
 429         unsigned long val;
 430         int err;
 431
 432         err = kstrtoul(buf, 10, &val);
 433         if (err)
 434                 return err;
 435
 436         mutex_lock(&data->update_lock);
 437         data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 438         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
 439                                 data->fan_min[nr]);
 440         mutex_unlock(&data->update_lock);
 441
 442         return count;
 443 }
 444
 445 static ssize_t
 446 show_fan_div(struct device *dev, struct device_attribute *attr,
 447                 char *buf)
 448 {
 449         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 450         int nr = sensor_attr->index;
 451         struct w83792d_data *data = w83792d_update_device(dev);
 452         return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
 453 }
 454
 455 /*
 456  * Note: we save and restore the fan minimum here, because its value is
 457  * determined in part by the fan divisor.  This follows the principle of
 458  * least surprise; the user doesn't expect the fan minimum to change just
 459  * because the divisor changed.
 460  */
 461 static ssize_t
 462 store_fan_div(struct device *dev, struct device_attribute *attr,
 463                 const char *buf, size_t count)
 464 {
 465         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 466         int nr = sensor_attr->index - 1;
 467         struct i2c_client *client = to_i2c_client(dev);
 468         struct w83792d_data *data = i2c_get_clientdata(client);
 469         unsigned long min;
 470         /*u8 reg;*/
 471         u8 fan_div_reg = 0;
 472         u8 tmp_fan_div;
 473         unsigned long val;
 474         int err;
 475
 476         err = kstrtoul(buf, 10, &val);
 477         if (err)
 478                 return err;
 479
 480         /* Save fan_min */
 481         mutex_lock(&data->update_lock);
 482         min = FAN_FROM_REG(data->fan_min[nr],
 483                            DIV_FROM_REG(data->fan_div[nr]));
 484
 485         data->fan_div[nr] = DIV_TO_REG(val);
 486
 487         fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
 488         fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
 489         tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
 490                                         : ((data->fan_div[nr]) & 0x07);
 491         w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
 492                                         fan_div_reg | tmp_fan_div);
 493
 494         /* Restore fan_min */
 495         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 496         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
 497         mutex_unlock(&data->update_lock);
 498
 499         return count;
 500 }
 501
 502 /* read/write the temperature1, includes measured value and limits */
 503
 504 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
 505                                 char *buf)
 506 {
 507         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 508         int nr = sensor_attr->index;
 509         struct w83792d_data *data = w83792d_update_device(dev);
 510         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
 511 }
 512
 513 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 514                                 const char *buf, size_t count)
 515 {
 516         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 517         int nr = sensor_attr->index;
 518         struct i2c_client *client = to_i2c_client(dev);
 519         struct w83792d_data *data = i2c_get_clientdata(client);
 520         long val;
 521         int err;
 522
 523         err = kstrtol(buf, 10, &val);
 524         if (err)
 525                 return err;
 526
 527         mutex_lock(&data->update_lock);
 528         data->temp1[nr] = TEMP1_TO_REG(val);
 529         w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 530                 data->temp1[nr]);
 531         mutex_unlock(&data->update_lock);
 532
 533         return count;
 534 }
 535
 536 /* read/write the temperature2-3, includes measured value and limits */
 537
 538 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
 539                                 char *buf)
 540 {
 541         struct sensor_device_attribute_2 *sensor_attr
 542           = to_sensor_dev_attr_2(attr);
 543         int nr = sensor_attr->nr;
 544         int index = sensor_attr->index;
 545         struct w83792d_data *data = w83792d_update_device(dev);
 546         return sprintf(buf, "%ld\n",
 547                 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
 548                         data->temp_add[nr][index+1]));
 549 }
 550
 551 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 552                                 const char *buf, size_t count)
 553 {
 554         struct sensor_device_attribute_2 *sensor_attr
 555           = to_sensor_dev_attr_2(attr);
 556         int nr = sensor_attr->nr;
 557         int index = sensor_attr->index;
 558         struct i2c_client *client = to_i2c_client(dev);
 559         struct w83792d_data *data = i2c_get_clientdata(client);
 560         long val;
 561         int err;
 562
 563         err = kstrtol(buf, 10, &val);
 564         if (err)
 565                 return err;
 566
 567         mutex_lock(&data->update_lock);
 568         data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 569         data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 570         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 571                 data->temp_add[nr][index]);
 572         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 573                 data->temp_add[nr][index+1]);
 574         mutex_unlock(&data->update_lock);
 575
 576         return count;
 577 }
 578
 579 /* get realtime status of all sensors items: voltage, temp, fan */
 580 static ssize_t
 581 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
 582 {
 583         struct w83792d_data *data = w83792d_update_device(dev);
 584         return sprintf(buf, "%d\n", data->alarms);
 585 }
 586
 587 static ssize_t show_alarm(struct device *dev,
 588                           struct device_attribute *attr, char *buf)
 589 {
 590         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 591         int nr = sensor_attr->index;
 592         struct w83792d_data *data = w83792d_update_device(dev);
 593         return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
 594 }
 595
 596 static ssize_t
 597 show_pwm(struct device *dev, struct device_attribute *attr,
 598                 char *buf)
 599 {
 600         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 601         int nr = sensor_attr->index;
 602         struct w83792d_data *data = w83792d_update_device(dev);
 603         return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 604 }
 605
 606 static ssize_t
 607 show_pwmenable(struct device *dev, struct device_attribute *attr,
 608                         char *buf)
 609 {
 610         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 611         int nr = sensor_attr->index - 1;
 612         struct w83792d_data *data = w83792d_update_device(dev);
 613         long pwm_enable_tmp = 1;
 614
 615         switch (data->pwmenable[nr]) {
 616         case 0:
 617                 pwm_enable_tmp = 1; /* manual mode */
 618                 break;
 619         case 1:
 620                 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
 621                 break;
 622         case 2:
 623                 pwm_enable_tmp = 2; /* Smart Fan II */
 624                 break;
 625         }
 626
 627         return sprintf(buf, "%ld\n", pwm_enable_tmp);
 628 }
 629
 630 static ssize_t
 631 store_pwm(struct device *dev, struct device_attribute *attr,
 632                 const char *buf, size_t count)
 633 {
 634         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 635         int nr = sensor_attr->index;
 636         struct i2c_client *client = to_i2c_client(dev);
 637         struct w83792d_data *data = i2c_get_clientdata(client);
 638         unsigned long val;
 639         int err;
 640
 641         err = kstrtoul(buf, 10, &val);
 642         if (err)
 643                 return err;
 644         val = clamp_val(val, 0, 255) >> 4;
 645
 646         mutex_lock(&data->update_lock);
 647         val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
 648         data->pwm[nr] = val;
 649         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 650         mutex_unlock(&data->update_lock);
 651
 652         return count;
 653 }
 654
 655 static ssize_t
 656 store_pwmenable(struct device *dev, struct device_attribute *attr,
 657                         const char *buf, size_t count)
 658 {
 659         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 660         int nr = sensor_attr->index - 1;
 661         struct i2c_client *client = to_i2c_client(dev);
 662         struct w83792d_data *data = i2c_get_clientdata(client);
 663         u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 664         unsigned long val;
 665         int err;
 666
 667         err = kstrtoul(buf, 10, &val);
 668         if (err)
 669                 return err;
 670
 671         if (val < 1 || val > 3)
 672                 return -EINVAL;
 673
 674         mutex_lock(&data->update_lock);
 675         switch (val) {
 676         case 1:
 677                 data->pwmenable[nr] = 0; /* manual mode */
 678                 break;
 679         case 2:
 680                 data->pwmenable[nr] = 2; /* Smart Fan II */
 681                 break;
 682         case 3:
 683                 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 684                 break;
 685         }
 686         cfg1_tmp = data->pwmenable[0];
 687         cfg2_tmp = (data->pwmenable[1]) << 2;
 688         cfg3_tmp = (data->pwmenable[2]) << 4;
 689         cfg4_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG) & 0xc0;
 690         fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 691         w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
 692         mutex_unlock(&data->update_lock);
 693
 694         return count;
 695 }
 696
 697 static ssize_t
 698 show_pwm_mode(struct device *dev, struct device_attribute *attr,
 699                         char *buf)
 700 {
 701         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 702         int nr = sensor_attr->index;
 703         struct w83792d_data *data = w83792d_update_device(dev);
 704         return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 705 }
 706
 707 static ssize_t
 708 store_pwm_mode(struct device *dev, struct device_attribute *attr,
 709                         const char *buf, size_t count)
 710 {
 711         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 712         int nr = sensor_attr->index;
 713         struct i2c_client *client = to_i2c_client(dev);
 714         struct w83792d_data *data = i2c_get_clientdata(client);
 715         unsigned long val;
 716         int err;
 717
 718         err = kstrtoul(buf, 10, &val);
 719         if (err)
 720                 return err;
 721         if (val > 1)
 722                 return -EINVAL;
 723
 724         mutex_lock(&data->update_lock);
 725         data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
 726         if (val) {                      /* PWM mode */
 727                 data->pwm[nr] |= 0x80;
 728         } else {                        /* DC mode */
 729                 data->pwm[nr] &= 0x7f;
 730         }
 731         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 732         mutex_unlock(&data->update_lock);
 733
 734         return count;
 735 }
 736
 737 static ssize_t
 738 show_chassis_clear(struct device *dev, struct device_attribute *attr,
 739                         char *buf)
 740 {
 741         struct w83792d_data *data = w83792d_update_device(dev);
 742         return sprintf(buf, "%d\n", data->chassis);
 743 }
 744
 745 static ssize_t
 746 store_chassis_clear(struct device *dev, struct device_attribute *attr,
 747                         const char *buf, size_t count)
 748 {
 749         struct i2c_client *client = to_i2c_client(dev);
 750         struct w83792d_data *data = i2c_get_clientdata(client);
 751         unsigned long val;
 752         u8 reg;
 753
 754         if (kstrtoul(buf, 10, &val) || val != 0)
 755                 return -EINVAL;
 756
 757         mutex_lock(&data->update_lock);
 758         reg = w83792d_read_value(client, W83792D_REG_CHASSIS_CLR);
 759         w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, reg | 0x80);
 760         data->valid = 0;                /* Force cache refresh */
 761         mutex_unlock(&data->update_lock);
 762
 763         return count;
 764 }
 765
 766 /* For Smart Fan I / Thermal Cruise */
 767 static ssize_t
 768 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 769                         char *buf)
 770 {
 771         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 772         int nr = sensor_attr->index;
 773         struct w83792d_data *data = w83792d_update_device(dev);
 774         return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 775 }
 776
 777 static ssize_t
 778 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 779                         const char *buf, size_t count)
 780 {
 781         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 782         int nr = sensor_attr->index - 1;
 783         struct i2c_client *client = to_i2c_client(dev);
 784         struct w83792d_data *data = i2c_get_clientdata(client);
 785         u8 target_tmp = 0, target_mask = 0;
 786         unsigned long val;
 787         int err;
 788
 789         err = kstrtoul(buf, 10, &val);
 790         if (err)
 791                 return err;
 792
 793         target_tmp = val;
 794         target_tmp = target_tmp & 0x7f;
 795         mutex_lock(&data->update_lock);
 796         target_mask = w83792d_read_value(client,
 797                                          W83792D_REG_THERMAL[nr]) & 0x80;
 798         data->thermal_cruise[nr] = clamp_val(target_tmp, 0, 255);
 799         w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 800                 (data->thermal_cruise[nr]) | target_mask);
 801         mutex_unlock(&data->update_lock);
 802
 803         return count;
 804 }
 805
 806 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
 807 static ssize_t
 808 show_tolerance(struct device *dev, struct device_attribute *attr,
 809                 char *buf)
 810 {
 811         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 812         int nr = sensor_attr->index;
 813         struct w83792d_data *data = w83792d_update_device(dev);
 814         return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 815 }
 816
 817 static ssize_t
 818 store_tolerance(struct device *dev, struct device_attribute *attr,
 819                 const char *buf, size_t count)
 820 {
 821         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 822         int nr = sensor_attr->index - 1;
 823         struct i2c_client *client = to_i2c_client(dev);
 824         struct w83792d_data *data = i2c_get_clientdata(client);
 825         u8 tol_tmp, tol_mask;
 826         unsigned long val;
 827         int err;
 828
 829         err = kstrtoul(buf, 10, &val);
 830         if (err)
 831                 return err;
 832
 833         mutex_lock(&data->update_lock);
 834         tol_mask = w83792d_read_value(client,
 835                 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 836         tol_tmp = clamp_val(val, 0, 15);
 837         tol_tmp &= 0x0f;
 838         data->tolerance[nr] = tol_tmp;
 839         if (nr == 1)
 840                 tol_tmp <<= 4;
 841         w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 842                 tol_mask | tol_tmp);
 843         mutex_unlock(&data->update_lock);
 844
 845         return count;
 846 }
 847
 848 /* For Smart Fan II */
 849 static ssize_t
 850 show_sf2_point(struct device *dev, struct device_attribute *attr,
 851                 char *buf)
 852 {
 853         struct sensor_device_attribute_2 *sensor_attr
 854           = to_sensor_dev_attr_2(attr);
 855         int nr = sensor_attr->nr;
 856         int index = sensor_attr->index;
 857         struct w83792d_data *data = w83792d_update_device(dev);
 858         return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 859 }
 860
 861 static ssize_t
 862 store_sf2_point(struct device *dev, struct device_attribute *attr,
 863                 const char *buf, size_t count)
 864 {
 865         struct sensor_device_attribute_2 *sensor_attr
 866           = to_sensor_dev_attr_2(attr);
 867         int nr = sensor_attr->nr - 1;
 868         int index = sensor_attr->index - 1;
 869         struct i2c_client *client = to_i2c_client(dev);
 870         struct w83792d_data *data = i2c_get_clientdata(client);
 871         u8 mask_tmp = 0;
 872         unsigned long val;
 873         int err;
 874
 875         err = kstrtoul(buf, 10, &val);
 876         if (err)
 877                 return err;
 878
 879         mutex_lock(&data->update_lock);
 880         data->sf2_points[index][nr] = clamp_val(val, 0, 127);
 881         mask_tmp = w83792d_read_value(client,
 882                                         W83792D_REG_POINTS[index][nr]) & 0x80;
 883         w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 884                 mask_tmp|data->sf2_points[index][nr]);
 885         mutex_unlock(&data->update_lock);
 886
 887         return count;
 888 }
 889
 890 static ssize_t
 891 show_sf2_level(struct device *dev, struct device_attribute *attr,
 892                 char *buf)
 893 {
 894         struct sensor_device_attribute_2 *sensor_attr
 895           = to_sensor_dev_attr_2(attr);
 896         int nr = sensor_attr->nr;
 897         int index = sensor_attr->index;
 898         struct w83792d_data *data = w83792d_update_device(dev);
 899         return sprintf(buf, "%d\n",
 900                         (((data->sf2_levels[index-1][nr]) * 100) / 15));
 901 }
 902
 903 static ssize_t
 904 store_sf2_level(struct device *dev, struct device_attribute *attr,
 905                 const char *buf, size_t count)
 906 {
 907         struct sensor_device_attribute_2 *sensor_attr
 908           = to_sensor_dev_attr_2(attr);
 909         int nr = sensor_attr->nr;
 910         int index = sensor_attr->index - 1;
 911         struct i2c_client *client = to_i2c_client(dev);
 912         struct w83792d_data *data = i2c_get_clientdata(client);
 913         u8 mask_tmp = 0, level_tmp = 0;
 914         unsigned long val;
 915         int err;
 916
 917         err = kstrtoul(buf, 10, &val);
 918         if (err)
 919                 return err;
 920
 921         mutex_lock(&data->update_lock);
 922         data->sf2_levels[index][nr] = clamp_val((val * 15) / 100, 0, 15);
 923         mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 924                 & ((nr == 3) ? 0xf0 : 0x0f);
 925         if (nr == 3)
 926                 level_tmp = data->sf2_levels[index][nr];
 927         else
 928                 level_tmp = data->sf2_levels[index][nr] << 4;
 929         w83792d_write_value(client, W83792D_REG_LEVELS[index][nr],
 930                             level_tmp | mask_tmp);
 931         mutex_unlock(&data->update_lock);
 932
 933         return count;
 934 }
 935
 936
 937 static int
 938 w83792d_detect_subclients(struct i2c_client *new_client)
 939 {
 940         int i, id, err;
 941         int address = new_client->addr;
 942         u8 val;
 943         struct i2c_adapter *adapter = new_client->adapter;
 944         struct w83792d_data *data = i2c_get_clientdata(new_client);
 945
 946         id = i2c_adapter_id(adapter);
 947         if (force_subclients[0] == id && force_subclients[1] == address) {
 948                 for (i = 2; i <= 3; i++) {
 949                         if (force_subclients[i] < 0x48 ||
 950                             force_subclients[i] > 0x4f) {
 951                                 dev_err(&new_client->dev,
 952                                         "invalid subclient address %d; must be 0x48-0x4f\n",
 953                                         force_subclients[i]);
 954                                 err = -ENODEV;
 955                                 goto ERROR_SC_0;
 956                         }
 957                 }
 958                 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
 959                                         (force_subclients[2] & 0x07) |
 960                                         ((force_subclients[3] & 0x07) << 4));
 961         }
 962
 963         val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
 964         if (!(val & 0x08))
 965                 data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
 966         if (!(val & 0x80)) {
 967                 if ((data->lm75[0] != NULL) &&
 968                         ((val & 0x7) == ((val >> 4) & 0x7))) {
 969                         dev_err(&new_client->dev,
 970                                 "duplicate addresses 0x%x, use force_subclient\n",
 971                                 data->lm75[0]->addr);
 972                         err = -ENODEV;
 973                         goto ERROR_SC_1;
 974                 }
 975                 data->lm75[1] = i2c_new_dummy(adapter,
 976                                               0x48 + ((val >> 4) & 0x7));
 977         }
 978
 979         return 0;
 980
 981 /* Undo inits in case of errors */
 982
 983 ERROR_SC_1:
 984         if (data->lm75[0] != NULL)
 985                 i2c_unregister_device(data->lm75[0]);
 986 ERROR_SC_0:
 987         return err;
 988 }
 989
 990 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 991 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 992 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 993 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 994 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
 995 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
 996 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
 997 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
 998 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
 999 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
1000                         show_in_min, store_in_min, 0);
1001 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
1002                         show_in_min, store_in_min, 1);
1003 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
1004                         show_in_min, store_in_min, 2);
1005 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
1006                         show_in_min, store_in_min, 3);
1007 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
1008                         show_in_min, store_in_min, 4);
1009 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
1010                         show_in_min, store_in_min, 5);
1011 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
1012                         show_in_min, store_in_min, 6);
1013 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
1014                         show_in_min, store_in_min, 7);
1015 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
1016                         show_in_min, store_in_min, 8);
1017 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
1018                         show_in_max, store_in_max, 0);
1019 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
1020                         show_in_max, store_in_max, 1);
1021 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
1022                         show_in_max, store_in_max, 2);
1023 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
1024                         show_in_max, store_in_max, 3);
1025 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
1026                         show_in_max, store_in_max, 4);
1027 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
1028                         show_in_max, store_in_max, 5);
1029 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
1030                         show_in_max, store_in_max, 6);
1031 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
1032                         show_in_max, store_in_max, 7);
1033 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
1034                         show_in_max, store_in_max, 8);
1035 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
1036 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
1037 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
1038 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1039                         show_temp1, store_temp1, 0, 1);
1040 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
1041                         store_temp23, 0, 2);
1042 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
1043                         store_temp23, 1, 2);
1044 static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1045                         show_temp1, store_temp1, 0, 2);
1046 static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1047                         show_temp23, store_temp23, 0, 4);
1048 static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1049                         show_temp23, store_temp23, 1, 4);
1050 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1051 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
1052 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
1053 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
1054 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
1055 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1056 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1057 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1058 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1059 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1060 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1061 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1062 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1063 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1064 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1065 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1066 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1067 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1068 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1069 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1070 static DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1071                         show_chassis_clear, store_chassis_clear);
1072 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1073 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1074 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1075 static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3);
1076 static SENSOR_DEVICE_ATTR(pwm5, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 4);
1077 static SENSOR_DEVICE_ATTR(pwm6, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 5);
1078 static SENSOR_DEVICE_ATTR(pwm7, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 6);
1079 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1080                         show_pwmenable, store_pwmenable, 1);
1081 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1082                         show_pwmenable, store_pwmenable, 2);
1083 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1084                         show_pwmenable, store_pwmenable, 3);
1085 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1086                         show_pwm_mode, store_pwm_mode, 0);
1087 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1088                         show_pwm_mode, store_pwm_mode, 1);
1089 static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1090                         show_pwm_mode, store_pwm_mode, 2);
1091 static SENSOR_DEVICE_ATTR(pwm4_mode, S_IWUSR | S_IRUGO,
1092                         show_pwm_mode, store_pwm_mode, 3);
1093 static SENSOR_DEVICE_ATTR(pwm5_mode, S_IWUSR | S_IRUGO,
1094                         show_pwm_mode, store_pwm_mode, 4);
1095 static SENSOR_DEVICE_ATTR(pwm6_mode, S_IWUSR | S_IRUGO,
1096                         show_pwm_mode, store_pwm_mode, 5);
1097 static SENSOR_DEVICE_ATTR(pwm7_mode, S_IWUSR | S_IRUGO,
1098                         show_pwm_mode, store_pwm_mode, 6);
1099 static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1100                         show_tolerance, store_tolerance, 1);
1101 static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1102                         show_tolerance, store_tolerance, 2);
1103 static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1104                         show_tolerance, store_tolerance, 3);
1105 static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1106                         show_thermal_cruise, store_thermal_cruise, 1);
1107 static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1108                         show_thermal_cruise, store_thermal_cruise, 2);
1109 static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1110                         show_thermal_cruise, store_thermal_cruise, 3);
1111 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1112                         show_sf2_point, store_sf2_point, 1, 1);
1113 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1114                         show_sf2_point, store_sf2_point, 2, 1);
1115 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1116                         show_sf2_point, store_sf2_point, 3, 1);
1117 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1118                         show_sf2_point, store_sf2_point, 4, 1);
1119 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1120                         show_sf2_point, store_sf2_point, 1, 2);
1121 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1122                         show_sf2_point, store_sf2_point, 2, 2);
1123 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1124                         show_sf2_point, store_sf2_point, 3, 2);
1125 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1126                         show_sf2_point, store_sf2_point, 4, 2);
1127 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1128                         show_sf2_point, store_sf2_point, 1, 3);
1129 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1130                         show_sf2_point, store_sf2_point, 2, 3);
1131 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1132                         show_sf2_point, store_sf2_point, 3, 3);
1133 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1134                         show_sf2_point, store_sf2_point, 4, 3);
1135 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1136                         show_sf2_level, store_sf2_level, 1, 1);
1137 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1138                         show_sf2_level, store_sf2_level, 2, 1);
1139 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1140                         show_sf2_level, store_sf2_level, 3, 1);
1141 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1142                         show_sf2_level, store_sf2_level, 1, 2);
1143 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1144                         show_sf2_level, store_sf2_level, 2, 2);
1145 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1146                         show_sf2_level, store_sf2_level, 3, 2);
1147 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1148                         show_sf2_level, store_sf2_level, 1, 3);
1149 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1150                         show_sf2_level, store_sf2_level, 2, 3);
1151 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1152                         show_sf2_level, store_sf2_level, 3, 3);
1153 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1154 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1155 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1156 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1157 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1158 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1159 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1160 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1161                         show_fan_min, store_fan_min, 1);
1162 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1163                         show_fan_min, store_fan_min, 2);
1164 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1165                         show_fan_min, store_fan_min, 3);
1166 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1167                         show_fan_min, store_fan_min, 4);
1168 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1169                         show_fan_min, store_fan_min, 5);
1170 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1171                         show_fan_min, store_fan_min, 6);
1172 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1173                         show_fan_min, store_fan_min, 7);
1174 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1175                         show_fan_div, store_fan_div, 1);
1176 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1177                         show_fan_div, store_fan_div, 2);
1178 static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1179                         show_fan_div, store_fan_div, 3);
1180 static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1181                         show_fan_div, store_fan_div, 4);
1182 static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1183                         show_fan_div, store_fan_div, 5);
1184 static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1185                         show_fan_div, store_fan_div, 6);
1186 static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1187                         show_fan_div, store_fan_div, 7);
1188
1189 static struct attribute *w83792d_attributes_fan[4][7] = {
1190         {
1191                 &sensor_dev_attr_fan4_input.dev_attr.attr,
1192                 &sensor_dev_attr_fan4_min.dev_attr.attr,
1193                 &sensor_dev_attr_fan4_div.dev_attr.attr,
1194                 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1195                 &sensor_dev_attr_pwm4.dev_attr.attr,
1196                 &sensor_dev_attr_pwm4_mode.dev_attr.attr,
1197                 NULL
1198         }, {
1199                 &sensor_dev_attr_fan5_input.dev_attr.attr,
1200                 &sensor_dev_attr_fan5_min.dev_attr.attr,
1201                 &sensor_dev_attr_fan5_div.dev_attr.attr,
1202                 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1203                 &sensor_dev_attr_pwm5.dev_attr.attr,
1204                 &sensor_dev_attr_pwm5_mode.dev_attr.attr,
1205                 NULL
1206         }, {
1207                 &sensor_dev_attr_fan6_input.dev_attr.attr,
1208                 &sensor_dev_attr_fan6_min.dev_attr.attr,
1209                 &sensor_dev_attr_fan6_div.dev_attr.attr,
1210                 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1211                 &sensor_dev_attr_pwm6.dev_attr.attr,
1212                 &sensor_dev_attr_pwm6_mode.dev_attr.attr,
1213                 NULL
1214         }, {
1215                 &sensor_dev_attr_fan7_input.dev_attr.attr,
1216                 &sensor_dev_attr_fan7_min.dev_attr.attr,
1217                 &sensor_dev_attr_fan7_div.dev_attr.attr,
1218                 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1219                 &sensor_dev_attr_pwm7.dev_attr.attr,
1220                 &sensor_dev_attr_pwm7_mode.dev_attr.attr,
1221                 NULL
1222         }
1223 };
1224
1225 static const struct attribute_group w83792d_group_fan[4] = {
1226         { .attrs = w83792d_attributes_fan[0] },
1227         { .attrs = w83792d_attributes_fan[1] },
1228         { .attrs = w83792d_attributes_fan[2] },
1229         { .attrs = w83792d_attributes_fan[3] },
1230 };
1231
1232 static struct attribute *w83792d_attributes[] = {
1233         &sensor_dev_attr_in0_input.dev_attr.attr,
1234         &sensor_dev_attr_in0_max.dev_attr.attr,
1235         &sensor_dev_attr_in0_min.dev_attr.attr,
1236         &sensor_dev_attr_in1_input.dev_attr.attr,
1237         &sensor_dev_attr_in1_max.dev_attr.attr,
1238         &sensor_dev_attr_in1_min.dev_attr.attr,
1239         &sensor_dev_attr_in2_input.dev_attr.attr,
1240         &sensor_dev_attr_in2_max.dev_attr.attr,
1241         &sensor_dev_attr_in2_min.dev_attr.attr,
1242         &sensor_dev_attr_in3_input.dev_attr.attr,
1243         &sensor_dev_attr_in3_max.dev_attr.attr,
1244         &sensor_dev_attr_in3_min.dev_attr.attr,
1245         &sensor_dev_attr_in4_input.dev_attr.attr,
1246         &sensor_dev_attr_in4_max.dev_attr.attr,
1247         &sensor_dev_attr_in4_min.dev_attr.attr,
1248         &sensor_dev_attr_in5_input.dev_attr.attr,
1249         &sensor_dev_attr_in5_max.dev_attr.attr,
1250         &sensor_dev_attr_in5_min.dev_attr.attr,
1251         &sensor_dev_attr_in6_input.dev_attr.attr,
1252         &sensor_dev_attr_in6_max.dev_attr.attr,
1253         &sensor_dev_attr_in6_min.dev_attr.attr,
1254         &sensor_dev_attr_in7_input.dev_attr.attr,
1255         &sensor_dev_attr_in7_max.dev_attr.attr,
1256         &sensor_dev_attr_in7_min.dev_attr.attr,
1257         &sensor_dev_attr_in8_input.dev_attr.attr,
1258         &sensor_dev_attr_in8_max.dev_attr.attr,
1259         &sensor_dev_attr_in8_min.dev_attr.attr,
1260         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1261         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1262         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1263         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1264         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1265         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1266         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1267         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1268         &sensor_dev_attr_in8_alarm.dev_attr.attr,
1269         &sensor_dev_attr_temp1_input.dev_attr.attr,
1270         &sensor_dev_attr_temp1_max.dev_attr.attr,
1271         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1272         &sensor_dev_attr_temp2_input.dev_attr.attr,
1273         &sensor_dev_attr_temp2_max.dev_attr.attr,
1274         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1275         &sensor_dev_attr_temp3_input.dev_attr.attr,
1276         &sensor_dev_attr_temp3_max.dev_attr.attr,
1277         &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1278         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1279         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1280         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1281         &sensor_dev_attr_pwm1.dev_attr.attr,
1282         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1283         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1284         &sensor_dev_attr_pwm2.dev_attr.attr,
1285         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1286         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1287         &sensor_dev_attr_pwm3.dev_attr.attr,
1288         &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1289         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1290         &dev_attr_alarms.attr,
1291         &dev_attr_intrusion0_alarm.attr,
1292         &sensor_dev_attr_tolerance1.dev_attr.attr,
1293         &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1294         &sensor_dev_attr_tolerance2.dev_attr.attr,
1295         &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1296         &sensor_dev_attr_tolerance3.dev_attr.attr,
1297         &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1298         &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1299         &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1300         &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1301         &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1302         &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1303         &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1304         &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1305         &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1306         &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1307         &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1308         &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1309         &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1310         &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1311         &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1312         &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1313         &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1314         &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1315         &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1316         &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1317         &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1318         &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1319         &sensor_dev_attr_fan1_input.dev_attr.attr,
1320         &sensor_dev_attr_fan1_min.dev_attr.attr,
1321         &sensor_dev_attr_fan1_div.dev_attr.attr,
1322         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1323         &sensor_dev_attr_fan2_input.dev_attr.attr,
1324         &sensor_dev_attr_fan2_min.dev_attr.attr,
1325         &sensor_dev_attr_fan2_div.dev_attr.attr,
1326         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1327         &sensor_dev_attr_fan3_input.dev_attr.attr,
1328         &sensor_dev_attr_fan3_min.dev_attr.attr,
1329         &sensor_dev_attr_fan3_div.dev_attr.attr,
1330         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1331         NULL
1332 };
1333
1334 static const struct attribute_group w83792d_group = {
1335         .attrs = w83792d_attributes,
1336 };
1337
1338 /* Return 0 if detection is successful, -ENODEV otherwise */
1339 static int
1340 w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)
1341 {
1342         struct i2c_adapter *adapter = client->adapter;
1343         int val1, val2;
1344         unsigned short address = client->addr;
1345
1346         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1347                 return -ENODEV;
1348
1349         if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
1350                 return -ENODEV;
1351
1352         val1 = w83792d_read_value(client, W83792D_REG_BANK);
1353         val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1354         /* Check for Winbond ID if in bank 0 */
1355         if (!(val1 & 0x07)) {  /* is Bank0 */
1356                 if ((!(val1 & 0x80) && val2 != 0xa3) ||
1357                     ((val1 & 0x80) && val2 != 0x5c))
1358                         return -ENODEV;
1359         }
1360         /*
1361          * If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1362          * should match
1363          */
1364         if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
1365                 return -ENODEV;
1366
1367         /*  Put it now into bank 0 and Vendor ID High Byte */
1368         w83792d_write_value(client,
1369                             W83792D_REG_BANK,
1370                             (w83792d_read_value(client,
1371                                 W83792D_REG_BANK) & 0x78) | 0x80);
1372
1373         /* Determine the chip type. */
1374         val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1375         val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1376         if (val1 != 0x7a || val2 != 0x5c)
1377                 return -ENODEV;
1378
1379         strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
1380
1381         return 0;
1382 }
1383
1384 static int
1385 w83792d_probe(struct i2c_client *client, const struct i2c_device_id *id)
1386 {
1387         struct w83792d_data *data;
1388         struct device *dev = &client->dev;
1389         int i, val1, err;
1390
1391         data = devm_kzalloc(dev, sizeof(struct w83792d_data), GFP_KERNEL);
1392         if (!data)
1393                 return -ENOMEM;
1394
1395         i2c_set_clientdata(client, data);
1396         mutex_init(&data->update_lock);
1397
1398         err = w83792d_detect_subclients(client);
1399         if (err)
1400                 return err;
1401
1402         /* Initialize the chip */
1403         w83792d_init_client(client);
1404
1405         /* A few vars need to be filled upon startup */
1406         for (i = 0; i < 7; i++) {
1407                 data->fan_min[i] = w83792d_read_value(client,
1408                                         W83792D_REG_FAN_MIN[i]);
1409         }
1410
1411         /* Register sysfs hooks */
1412         err = sysfs_create_group(&dev->kobj, &w83792d_group);
1413         if (err)
1414                 goto exit_i2c_unregister;
1415
1416         /*
1417          * Read GPIO enable register to check if pins for fan 4,5 are used as
1418          * GPIO
1419          */
1420         val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1421
1422         if (!(val1 & 0x40)) {
1423                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[0]);
1424                 if (err)
1425                         goto exit_remove_files;
1426         }
1427
1428         if (!(val1 & 0x20)) {
1429                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[1]);
1430                 if (err)
1431                         goto exit_remove_files;
1432         }
1433
1434         val1 = w83792d_read_value(client, W83792D_REG_PIN);
1435         if (val1 & 0x40) {
1436                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[2]);
1437                 if (err)
1438                         goto exit_remove_files;
1439         }
1440
1441         if (val1 & 0x04) {
1442                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[3]);
1443                 if (err)
1444                         goto exit_remove_files;
1445         }
1446
1447         data->hwmon_dev = hwmon_device_register(dev);
1448         if (IS_ERR(data->hwmon_dev)) {
1449                 err = PTR_ERR(data->hwmon_dev);
1450                 goto exit_remove_files;
1451         }
1452
1453         return 0;
1454
1455 exit_remove_files:
1456         sysfs_remove_group(&dev->kobj, &w83792d_group);
1457         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1458                 sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1459 exit_i2c_unregister:
1460         if (data->lm75[0] != NULL)
1461                 i2c_unregister_device(data->lm75[0]);
1462         if (data->lm75[1] != NULL)
1463                 i2c_unregister_device(data->lm75[1]);
1464         return err;
1465 }
1466
1467 static int
1468 w83792d_remove(struct i2c_client *client)
1469 {
1470         struct w83792d_data *data = i2c_get_clientdata(client);
1471         int i;
1472
1473         hwmon_device_unregister(data->hwmon_dev);
1474         sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1475         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1476                 sysfs_remove_group(&client->dev.kobj,
1477                                    &w83792d_group_fan[i]);
1478
1479         if (data->lm75[0] != NULL)
1480                 i2c_unregister_device(data->lm75[0]);
1481         if (data->lm75[1] != NULL)
1482                 i2c_unregister_device(data->lm75[1]);
1483
1484         return 0;
1485 }
1486
1487 static void
1488 w83792d_init_client(struct i2c_client *client)
1489 {
1490         u8 temp2_cfg, temp3_cfg, vid_in_b;
1491
1492         if (init)
1493                 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1494
1495         /*
1496          * Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1497          * W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1498          * vin0/vin1 can be modified by user;
1499          * W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1500          * vin0/vin1 auto-updated, can NOT be modified by user.
1501          */
1502         vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1503         w83792d_write_value(client, W83792D_REG_VID_IN_B,
1504                             vid_in_b & 0xbf);
1505
1506         temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1507         temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1508         w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1509                                 temp2_cfg & 0xe6);
1510         w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1511                                 temp3_cfg & 0xe6);
1512
1513         /* Start monitoring */
1514         w83792d_write_value(client, W83792D_REG_CONFIG,
1515                             (w83792d_read_value(client,
1516                                                 W83792D_REG_CONFIG) & 0xf7)
1517                             | 0x01);
1518 }
1519
1520 static struct w83792d_data *w83792d_update_device(struct device *dev)
1521 {
1522         struct i2c_client *client = to_i2c_client(dev);
1523         struct w83792d_data *data = i2c_get_clientdata(client);
1524         int i, j;
1525         u8 reg_array_tmp[4], reg_tmp;
1526
1527         mutex_lock(&data->update_lock);
1528
1529         if (time_after
1530             (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1531             || time_before(jiffies, data->last_updated) || !data->valid) {
1532                 dev_dbg(dev, "Starting device update\n");
1533
1534                 /* Update the voltages measured value and limits */
1535                 for (i = 0; i < 9; i++) {
1536                         data->in[i] = w83792d_read_value(client,
1537                                                 W83792D_REG_IN[i]);
1538                         data->in_max[i] = w83792d_read_value(client,
1539                                                 W83792D_REG_IN_MAX[i]);
1540                         data->in_min[i] = w83792d_read_value(client,
1541                                                 W83792D_REG_IN_MIN[i]);
1542                 }
1543                 data->low_bits = w83792d_read_value(client,
1544                                                 W83792D_REG_LOW_BITS1) +
1545                                  (w83792d_read_value(client,
1546                                                 W83792D_REG_LOW_BITS2) << 8);
1547                 for (i = 0; i < 7; i++) {
1548                         /* Update the Fan measured value and limits */
1549                         data->fan[i] = w83792d_read_value(client,
1550                                                 W83792D_REG_FAN[i]);
1551                         data->fan_min[i] = w83792d_read_value(client,
1552                                                 W83792D_REG_FAN_MIN[i]);
1553                         /* Update the PWM/DC Value and PWM/DC flag */
1554                         data->pwm[i] = w83792d_read_value(client,
1555                                                 W83792D_REG_PWM[i]);
1556                 }
1557
1558                 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1559                 data->pwmenable[0] = reg_tmp & 0x03;
1560                 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1561                 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1562
1563                 for (i = 0; i < 3; i++) {
1564                         data->temp1[i] = w83792d_read_value(client,
1565                                                         W83792D_REG_TEMP1[i]);
1566                 }
1567                 for (i = 0; i < 2; i++) {
1568                         for (j = 0; j < 6; j++) {
1569                                 data->temp_add[i][j] = w83792d_read_value(
1570                                         client, W83792D_REG_TEMP_ADD[i][j]);
1571                         }
1572                 }
1573
1574                 /* Update the Fan Divisor */
1575                 for (i = 0; i < 4; i++) {
1576                         reg_array_tmp[i] = w83792d_read_value(client,
1577                                                         W83792D_REG_FAN_DIV[i]);
1578                 }
1579                 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1580                 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1581                 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1582                 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1583                 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1584                 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1585                 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1586
1587                 /* Update the realtime status */
1588                 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1589                         (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1590                         (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1591
1592                 /* Update CaseOpen status and it's CLR_CHS. */
1593                 data->chassis = (w83792d_read_value(client,
1594                         W83792D_REG_CHASSIS) >> 5) & 0x01;
1595
1596                 /* Update Thermal Cruise/Smart Fan I target value */
1597                 for (i = 0; i < 3; i++) {
1598                         data->thermal_cruise[i] =
1599                                 w83792d_read_value(client,
1600                                 W83792D_REG_THERMAL[i]) & 0x7f;
1601                 }
1602
1603                 /* Update Smart Fan I/II tolerance */
1604                 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1605                 data->tolerance[0] = reg_tmp & 0x0f;
1606                 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1607                 data->tolerance[2] = w83792d_read_value(client,
1608                                         W83792D_REG_TOLERANCE[2]) & 0x0f;
1609
1610                 /* Update Smart Fan II temperature points */
1611                 for (i = 0; i < 3; i++) {
1612                         for (j = 0; j < 4; j++) {
1613                                 data->sf2_points[i][j]
1614                                   = w83792d_read_value(client,
1615                                         W83792D_REG_POINTS[i][j]) & 0x7f;
1616                         }
1617                 }
1618
1619                 /* Update Smart Fan II duty cycle levels */
1620                 for (i = 0; i < 3; i++) {
1621                         reg_tmp = w83792d_read_value(client,
1622                                                 W83792D_REG_LEVELS[i][0]);
1623                         data->sf2_levels[i][0] = reg_tmp & 0x0f;
1624                         data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1625                         reg_tmp = w83792d_read_value(client,
1626                                                 W83792D_REG_LEVELS[i][2]);
1627                         data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1628                         data->sf2_levels[i][3] = reg_tmp & 0x0f;
1629                 }
1630
1631                 data->last_updated = jiffies;
1632                 data->valid = 1;
1633         }
1634
1635         mutex_unlock(&data->update_lock);
1636
1637 #ifdef DEBUG
1638         w83792d_print_debug(data, dev);
1639 #endif
1640
1641         return data;
1642 }
1643
1644 #ifdef DEBUG
1645 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1646 {
1647         int i = 0, j = 0;
1648         dev_dbg(dev, "==========The following is the debug message...========\n");
1649         dev_dbg(dev, "9 set of Voltages: =====>\n");
1650         for (i = 0; i < 9; i++) {
1651                 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1652                 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1653                 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1654         }
1655         dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1656         dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1657         dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1658         for (i = 0; i < 7; i++) {
1659                 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1660                 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1661                 dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1662         }
1663         dev_dbg(dev, "3 set of Temperatures: =====>\n");
1664         for (i = 0; i < 3; i++)
1665                 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1666
1667         for (i = 0; i < 2; i++) {
1668                 for (j = 0; j < 6; j++) {
1669                         dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1670                                                         data->temp_add[i][j]);
1671                 }
1672         }
1673
1674         for (i = 0; i < 7; i++)
1675                 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1676
1677         dev_dbg(dev, "==========End of the debug message...================\n");
1678         dev_dbg(dev, "\n");
1679 }
1680 #endif
1681
1682 module_i2c_driver(w83792d_driver);
1683
1684 MODULE_AUTHOR("Shane Huang (Winbond)");
1685 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1686 MODULE_LICENSE("GPL");