git.oblomov.eu Git - linux-2.6/blob - 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                         Chunhao Huang <DZShen@Winbond.com.tw>,
   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
  48 /* Addresses to scan */
  49 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
  50
  51 /* Insmod parameters */
  52 I2C_CLIENT_INSMOD_1(w83792d);
  53 I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
  54                         "{bus, clientaddr, subclientaddr1, subclientaddr2}");
  55
  56 static int init;
  57 module_param(init, bool, 0);
  58 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
  59
  60 /* The W83792D registers */
  61 static const u8 W83792D_REG_IN[9] = {
  62         0x20,   /* Vcore A in DataSheet */
  63         0x21,   /* Vcore B in DataSheet */
  64         0x22,   /* VIN0 in DataSheet */
  65         0x23,   /* VIN1 in DataSheet */
  66         0x24,   /* VIN2 in DataSheet */
  67         0x25,   /* VIN3 in DataSheet */
  68         0x26,   /* 5VCC in DataSheet */
  69         0xB0,   /* 5VSB in DataSheet */
  70         0xB1    /* VBAT in DataSheet */
  71 };
  72 #define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
  73 #define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
  74 static const u8 W83792D_REG_IN_MAX[9] = {
  75         0x2B,   /* Vcore A High Limit in DataSheet */
  76         0x2D,   /* Vcore B High Limit in DataSheet */
  77         0x2F,   /* VIN0 High Limit in DataSheet */
  78         0x31,   /* VIN1 High Limit in DataSheet */
  79         0x33,   /* VIN2 High Limit in DataSheet */
  80         0x35,   /* VIN3 High Limit in DataSheet */
  81         0x37,   /* 5VCC High Limit in DataSheet */
  82         0xB4,   /* 5VSB High Limit in DataSheet */
  83         0xB6    /* VBAT High Limit in DataSheet */
  84 };
  85 static const u8 W83792D_REG_IN_MIN[9] = {
  86         0x2C,   /* Vcore A Low Limit in DataSheet */
  87         0x2E,   /* Vcore B Low Limit in DataSheet */
  88         0x30,   /* VIN0 Low Limit in DataSheet */
  89         0x32,   /* VIN1 Low Limit in DataSheet */
  90         0x34,   /* VIN2 Low Limit in DataSheet */
  91         0x36,   /* VIN3 Low Limit in DataSheet */
  92         0x38,   /* 5VCC Low Limit in DataSheet */
  93         0xB5,   /* 5VSB Low Limit in DataSheet */
  94         0xB7    /* VBAT Low Limit in DataSheet */
  95 };
  96 static const u8 W83792D_REG_FAN[7] = {
  97         0x28,   /* FAN 1 Count in DataSheet */
  98         0x29,   /* FAN 2 Count in DataSheet */
  99         0x2A,   /* FAN 3 Count in DataSheet */
 100         0xB8,   /* FAN 4 Count in DataSheet */
 101         0xB9,   /* FAN 5 Count in DataSheet */
 102         0xBA,   /* FAN 6 Count in DataSheet */
 103         0xBE    /* FAN 7 Count in DataSheet */
 104 };
 105 static const u8 W83792D_REG_FAN_MIN[7] = {
 106         0x3B,   /* FAN 1 Count Low Limit in DataSheet */
 107         0x3C,   /* FAN 2 Count Low Limit in DataSheet */
 108         0x3D,   /* FAN 3 Count Low Limit in DataSheet */
 109         0xBB,   /* FAN 4 Count Low Limit in DataSheet */
 110         0xBC,   /* FAN 5 Count Low Limit in DataSheet */
 111         0xBD,   /* FAN 6 Count Low Limit in DataSheet */
 112         0xBF    /* FAN 7 Count Low Limit in DataSheet */
 113 };
 114 #define W83792D_REG_FAN_CFG 0x84        /* FAN Configuration in DataSheet */
 115 static const u8 W83792D_REG_FAN_DIV[4] = {
 116         0x47,   /* contains FAN2 and FAN1 Divisor */
 117         0x5B,   /* contains FAN4 and FAN3 Divisor */
 118         0x5C,   /* contains FAN6 and FAN5 Divisor */
 119         0x9E    /* contains FAN7 Divisor. */
 120 };
 121 static const u8 W83792D_REG_PWM[7] = {
 122         0x81,   /* FAN 1 Duty Cycle, be used to control */
 123         0x83,   /* FAN 2 Duty Cycle, be used to control */
 124         0x94,   /* FAN 3 Duty Cycle, be used to control */
 125         0xA3,   /* FAN 4 Duty Cycle, be used to control */
 126         0xA4,   /* FAN 5 Duty Cycle, be used to control */
 127         0xA5,   /* FAN 6 Duty Cycle, be used to control */
 128         0xA6    /* FAN 7 Duty Cycle, be used to control */
 129 };
 130 #define W83792D_REG_BANK                0x4E
 131 #define W83792D_REG_TEMP2_CONFIG        0xC2
 132 #define W83792D_REG_TEMP3_CONFIG        0xCA
 133
 134 static const u8 W83792D_REG_TEMP1[3] = {
 135         0x27,   /* TEMP 1 in DataSheet */
 136         0x39,   /* TEMP 1 Over in DataSheet */
 137         0x3A,   /* TEMP 1 Hyst in DataSheet */
 138 };
 139
 140 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
 141         { 0xC0,         /* TEMP 2 in DataSheet */
 142           0xC1,         /* TEMP 2(0.5 deg) in DataSheet */
 143           0xC5,         /* TEMP 2 Over High part in DataSheet */
 144           0xC6,         /* TEMP 2 Over Low part in DataSheet */
 145           0xC3,         /* TEMP 2 Thyst High part in DataSheet */
 146           0xC4 },       /* TEMP 2 Thyst Low part in DataSheet */
 147         { 0xC8,         /* TEMP 3 in DataSheet */
 148           0xC9,         /* TEMP 3(0.5 deg) in DataSheet */
 149           0xCD,         /* TEMP 3 Over High part in DataSheet */
 150           0xCE,         /* TEMP 3 Over Low part in DataSheet */
 151           0xCB,         /* TEMP 3 Thyst High part in DataSheet */
 152           0xCC }        /* TEMP 3 Thyst Low part in DataSheet */
 153 };
 154
 155 static const u8 W83792D_REG_THERMAL[3] = {
 156         0x85,   /* SmartFanI: Fan1 target value */
 157         0x86,   /* SmartFanI: Fan2 target value */
 158         0x96    /* SmartFanI: Fan3 target value */
 159 };
 160
 161 static const u8 W83792D_REG_TOLERANCE[3] = {
 162         0x87,   /* (bit3-0)SmartFan Fan1 tolerance */
 163         0x87,   /* (bit7-4)SmartFan Fan2 tolerance */
 164         0x97    /* (bit3-0)SmartFan Fan3 tolerance */
 165 };
 166
 167 static const u8 W83792D_REG_POINTS[3][4] = {
 168         { 0x85,         /* SmartFanII: Fan1 temp point 1 */
 169           0xE3,         /* SmartFanII: Fan1 temp point 2 */
 170           0xE4,         /* SmartFanII: Fan1 temp point 3 */
 171           0xE5 },       /* SmartFanII: Fan1 temp point 4 */
 172         { 0x86,         /* SmartFanII: Fan2 temp point 1 */
 173           0xE6,         /* SmartFanII: Fan2 temp point 2 */
 174           0xE7,         /* SmartFanII: Fan2 temp point 3 */
 175           0xE8 },       /* SmartFanII: Fan2 temp point 4 */
 176         { 0x96,         /* SmartFanII: Fan3 temp point 1 */
 177           0xE9,         /* SmartFanII: Fan3 temp point 2 */
 178           0xEA,         /* SmartFanII: Fan3 temp point 3 */
 179           0xEB }        /* SmartFanII: Fan3 temp point 4 */
 180 };
 181
 182 static const u8 W83792D_REG_LEVELS[3][4] = {
 183         { 0x88,         /* (bit3-0) SmartFanII: Fan1 Non-Stop */
 184           0x88,         /* (bit7-4) SmartFanII: Fan1 Level 1 */
 185           0xE0,         /* (bit7-4) SmartFanII: Fan1 Level 2 */
 186           0xE0 },       /* (bit3-0) SmartFanII: Fan1 Level 3 */
 187         { 0x89,         /* (bit3-0) SmartFanII: Fan2 Non-Stop */
 188           0x89,         /* (bit7-4) SmartFanII: Fan2 Level 1 */
 189           0xE1,         /* (bit7-4) SmartFanII: Fan2 Level 2 */
 190           0xE1 },       /* (bit3-0) SmartFanII: Fan2 Level 3 */
 191         { 0x98,         /* (bit3-0) SmartFanII: Fan3 Non-Stop */
 192           0x98,         /* (bit7-4) SmartFanII: Fan3 Level 1 */
 193           0xE2,         /* (bit7-4) SmartFanII: Fan3 Level 2 */
 194           0xE2 }        /* (bit3-0) SmartFanII: Fan3 Level 3 */
 195 };
 196
 197 #define W83792D_REG_GPIO_EN             0x1A
 198 #define W83792D_REG_CONFIG              0x40
 199 #define W83792D_REG_VID_FANDIV          0x47
 200 #define W83792D_REG_CHIPID              0x49
 201 #define W83792D_REG_WCHIPID             0x58
 202 #define W83792D_REG_CHIPMAN             0x4F
 203 #define W83792D_REG_PIN                 0x4B
 204 #define W83792D_REG_I2C_SUBADDR         0x4A
 205
 206 #define W83792D_REG_ALARM1 0xA9         /* realtime status register1 */
 207 #define W83792D_REG_ALARM2 0xAA         /* realtime status register2 */
 208 #define W83792D_REG_ALARM3 0xAB         /* realtime status register3 */
 209 #define W83792D_REG_CHASSIS 0x42        /* Bit 5: Case Open status bit */
 210 #define W83792D_REG_CHASSIS_CLR 0x44    /* Bit 7: Case Open CLR_CHS/Reset bit */
 211
 212 /* control in0/in1 's limit modifiability */
 213 #define W83792D_REG_VID_IN_B            0x17
 214
 215 #define W83792D_REG_VBAT                0x5D
 216 #define W83792D_REG_I2C_ADDR            0x48
 217
 218 /* Conversions. Rounding and limit checking is only done on the TO_REG
 219    variants. Note that you should be a bit careful with which arguments
 220    these macros are called: arguments may be evaluated more than once.
 221    Fixing this is just not worth it. */
 222 #define IN_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
 223                                 ((((nr)==6)||((nr)==7))?(val*6):(val*4)))
 224 #define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
 225                                 ((((nr)==6)||((nr)==7))?(val/6):(val/4)))
 226
 227 static inline u8
 228 FAN_TO_REG(long rpm, int div)
 229 {
 230         if (rpm == 0)
 231                 return 255;
 232         rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 233         return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 234 }
 235
 236 #define FAN_FROM_REG(val,div)   ((val) == 0   ? -1 : \
 237                                 ((val) == 255 ? 0 : \
 238                                                 1350000 / ((val) * (div))))
 239
 240 /* for temp1 */
 241 #define TEMP1_TO_REG(val)       (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 242                                         : (val)) / 1000, 0, 0xff))
 243 #define TEMP1_FROM_REG(val)     (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 244 /* for temp2 and temp3, because they need addtional resolution */
 245 #define TEMP_ADD_FROM_REG(val1, val2) \
 246         ((((val1) & 0x80 ? (val1)-0x100 \
 247                 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
 248 #define TEMP_ADD_TO_REG_HIGH(val) \
 249         (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 250                         : (val)) / 1000, 0, 0xff))
 251 #define TEMP_ADD_TO_REG_LOW(val)        ((val%1000) ? 0x80 : 0x00)
 252
 253 #define DIV_FROM_REG(val)               (1 << (val))
 254
 255 static inline u8
 256 DIV_TO_REG(long val)
 257 {
 258         int i;
 259         val = SENSORS_LIMIT(val, 1, 128) >> 1;
 260         for (i = 0; i < 7; i++) {
 261                 if (val == 0)
 262                         break;
 263                 val >>= 1;
 264         }
 265         return ((u8) i);
 266 }
 267
 268 struct w83792d_data {
 269         struct i2c_client client;
 270         struct device *hwmon_dev;
 271         enum chips type;
 272
 273         struct mutex update_lock;
 274         char valid;             /* !=0 if following fields are valid */
 275         unsigned long last_updated;     /* In jiffies */
 276
 277         /* array of 2 pointers to subclients */
 278         struct i2c_client *lm75[2];
 279
 280         u8 in[9];               /* Register value */
 281         u8 in_max[9];           /* Register value */
 282         u8 in_min[9];           /* Register value */
 283         u16 low_bits;           /* Additional resolution to voltage in6-0 */
 284         u8 fan[7];              /* Register value */
 285         u8 fan_min[7];          /* Register value */
 286         u8 temp1[3];            /* current, over, thyst */
 287         u8 temp_add[2][6];      /* Register value */
 288         u8 fan_div[7];          /* Register encoding, shifted right */
 289         u8 pwm[7];              /* We only consider the first 3 set of pwm,
 290                                    although 792 chip has 7 set of pwm. */
 291         u8 pwmenable[3];
 292         u32 alarms;             /* realtime status register encoding,combined */
 293         u8 chassis;             /* Chassis status */
 294         u8 chassis_clear;       /* CLR_CHS, clear chassis intrusion detection */
 295         u8 thermal_cruise[3];   /* Smart FanI: Fan1,2,3 target value */
 296         u8 tolerance[3];        /* Fan1,2,3 tolerance(Smart Fan I/II) */
 297         u8 sf2_points[3][4];    /* Smart FanII: Fan1,2,3 temperature points */
 298         u8 sf2_levels[3][4];    /* Smart FanII: Fan1,2,3 duty cycle levels */
 299 };
 300
 301 static int w83792d_attach_adapter(struct i2c_adapter *adapter);
 302 static int w83792d_detect(struct i2c_adapter *adapter, int address, int kind);
 303 static int w83792d_detach_client(struct i2c_client *client);
 304 static struct w83792d_data *w83792d_update_device(struct device *dev);
 305
 306 #ifdef DEBUG
 307 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 308 #endif
 309
 310 static void w83792d_init_client(struct i2c_client *client);
 311
 312 static struct i2c_driver w83792d_driver = {
 313         .driver = {
 314                 .name = "w83792d",
 315         },
 316         .attach_adapter = w83792d_attach_adapter,
 317         .detach_client = w83792d_detach_client,
 318 };
 319
 320 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
 321 {
 322         /* in7 and in8 do not have low bits, but the formula still works */
 323         return ((data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03));
 324 }
 325
 326 /* The SMBus locks itself. The Winbond W83792D chip has a bank register,
 327    but the driver only accesses registers in bank 0, so we don't have
 328    to switch banks and lock access between switches. */
 329 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
 330 {
 331         return i2c_smbus_read_byte_data(client, reg);
 332 }
 333
 334 static inline int
 335 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
 336 {
 337         return i2c_smbus_write_byte_data(client, reg, value);
 338 }
 339
 340 /* following are the sysfs callback functions */
 341 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 342                         char *buf)
 343 {
 344         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 345         int nr = sensor_attr->index;
 346         struct w83792d_data *data = w83792d_update_device(dev);
 347         return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
 348 }
 349
 350 #define show_in_reg(reg) \
 351 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 352                         char *buf) \
 353 { \
 354         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 355         int nr = sensor_attr->index; \
 356         struct w83792d_data *data = w83792d_update_device(dev); \
 357         return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
 358 }
 359
 360 show_in_reg(in_min);
 361 show_in_reg(in_max);
 362
 363 #define store_in_reg(REG, reg) \
 364 static ssize_t store_in_##reg (struct device *dev, \
 365                                 struct device_attribute *attr, \
 366                                 const char *buf, size_t count) \
 367 { \
 368         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 369         int nr = sensor_attr->index; \
 370         struct i2c_client *client = to_i2c_client(dev); \
 371         struct w83792d_data *data = i2c_get_clientdata(client); \
 372         u32 val; \
 373          \
 374         val = simple_strtoul(buf, NULL, 10); \
 375         mutex_lock(&data->update_lock); \
 376         data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
 377         w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
 378         mutex_unlock(&data->update_lock); \
 379          \
 380         return count; \
 381 }
 382 store_in_reg(MIN, min);
 383 store_in_reg(MAX, max);
 384
 385 #define show_fan_reg(reg) \
 386 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
 387                         char *buf) \
 388 { \
 389         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 390         int nr = sensor_attr->index - 1; \
 391         struct w83792d_data *data = w83792d_update_device(dev); \
 392         return sprintf(buf,"%d\n", \
 393                 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 394 }
 395
 396 show_fan_reg(fan);
 397 show_fan_reg(fan_min);
 398
 399 static ssize_t
 400 store_fan_min(struct device *dev, struct device_attribute *attr,
 401                 const char *buf, size_t count)
 402 {
 403         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 404         int nr = sensor_attr->index - 1;
 405         struct i2c_client *client = to_i2c_client(dev);
 406         struct w83792d_data *data = i2c_get_clientdata(client);
 407         u32 val;
 408
 409         val = simple_strtoul(buf, NULL, 10);
 410         mutex_lock(&data->update_lock);
 411         data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 412         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
 413                                 data->fan_min[nr]);
 414         mutex_unlock(&data->update_lock);
 415
 416         return count;
 417 }
 418
 419 static ssize_t
 420 show_fan_div(struct device *dev, struct device_attribute *attr,
 421                 char *buf)
 422 {
 423         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 424         int nr = sensor_attr->index;
 425         struct w83792d_data *data = w83792d_update_device(dev);
 426         return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
 427 }
 428
 429 /* Note: we save and restore the fan minimum here, because its value is
 430    determined in part by the fan divisor.  This follows the principle of
 431    least surprise; the user doesn't expect the fan minimum to change just
 432    because the divisor changed. */
 433 static ssize_t
 434 store_fan_div(struct device *dev, struct device_attribute *attr,
 435                 const char *buf, size_t count)
 436 {
 437         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 438         int nr = sensor_attr->index - 1;
 439         struct i2c_client *client = to_i2c_client(dev);
 440         struct w83792d_data *data = i2c_get_clientdata(client);
 441         unsigned long min;
 442         /*u8 reg;*/
 443         u8 fan_div_reg = 0;
 444         u8 tmp_fan_div;
 445
 446         /* Save fan_min */
 447         mutex_lock(&data->update_lock);
 448         min = FAN_FROM_REG(data->fan_min[nr],
 449                            DIV_FROM_REG(data->fan_div[nr]));
 450
 451         data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
 452
 453         fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
 454         fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
 455         tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
 456                                         : ((data->fan_div[nr]) & 0x07);
 457         w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
 458                                         fan_div_reg | tmp_fan_div);
 459
 460         /* Restore fan_min */
 461         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 462         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
 463         mutex_unlock(&data->update_lock);
 464
 465         return count;
 466 }
 467
 468 /* read/write the temperature1, includes measured value and limits */
 469
 470 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
 471                                 char *buf)
 472 {
 473         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 474         int nr = sensor_attr->index;
 475         struct w83792d_data *data = w83792d_update_device(dev);
 476         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
 477 }
 478
 479 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 480                                 const char *buf, size_t count)
 481 {
 482         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 483         int nr = sensor_attr->index;
 484         struct i2c_client *client = to_i2c_client(dev);
 485         struct w83792d_data *data = i2c_get_clientdata(client);
 486         s32 val;
 487
 488         val = simple_strtol(buf, NULL, 10);
 489         mutex_lock(&data->update_lock);
 490         data->temp1[nr] = TEMP1_TO_REG(val);
 491         w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 492                 data->temp1[nr]);
 493         mutex_unlock(&data->update_lock);
 494
 495         return count;
 496 }
 497
 498 /* read/write the temperature2-3, includes measured value and limits */
 499
 500 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
 501                                 char *buf)
 502 {
 503         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 504         int nr = sensor_attr->nr;
 505         int index = sensor_attr->index;
 506         struct w83792d_data *data = w83792d_update_device(dev);
 507         return sprintf(buf,"%ld\n",
 508                 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
 509                         data->temp_add[nr][index+1]));
 510 }
 511
 512 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 513                                 const char *buf, size_t count)
 514 {
 515         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 516         int nr = sensor_attr->nr;
 517         int index = sensor_attr->index;
 518         struct i2c_client *client = to_i2c_client(dev);
 519         struct w83792d_data *data = i2c_get_clientdata(client);
 520         s32 val;
 521
 522         val = simple_strtol(buf, NULL, 10);
 523         mutex_lock(&data->update_lock);
 524         data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 525         data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 526         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 527                 data->temp_add[nr][index]);
 528         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 529                 data->temp_add[nr][index+1]);
 530         mutex_unlock(&data->update_lock);
 531
 532         return count;
 533 }
 534
 535 /* get reatime status of all sensors items: voltage, temp, fan */
 536 static ssize_t
 537 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
 538 {
 539         struct w83792d_data *data = w83792d_update_device(dev);
 540         return sprintf(buf, "%d\n", data->alarms);
 541 }
 542
 543 static ssize_t show_alarm(struct device *dev,
 544                           struct device_attribute *attr, char *buf)
 545 {
 546         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 547         int nr = sensor_attr->index;
 548         struct w83792d_data *data = w83792d_update_device(dev);
 549         return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
 550 }
 551
 552 static ssize_t
 553 show_pwm(struct device *dev, struct device_attribute *attr,
 554                 char *buf)
 555 {
 556         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 557         int nr = sensor_attr->index;
 558         struct w83792d_data *data = w83792d_update_device(dev);
 559         return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 560 }
 561
 562 static ssize_t
 563 show_pwmenable(struct device *dev, struct device_attribute *attr,
 564                         char *buf)
 565 {
 566         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 567         int nr = sensor_attr->index - 1;
 568         struct w83792d_data *data = w83792d_update_device(dev);
 569         long pwm_enable_tmp = 1;
 570
 571         switch (data->pwmenable[nr]) {
 572         case 0:
 573                 pwm_enable_tmp = 1; /* manual mode */
 574                 break;
 575         case 1:
 576                 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
 577                 break;
 578         case 2:
 579                 pwm_enable_tmp = 2; /* Smart Fan II */
 580                 break;
 581         }
 582
 583         return sprintf(buf, "%ld\n", pwm_enable_tmp);
 584 }
 585
 586 static ssize_t
 587 store_pwm(struct device *dev, struct device_attribute *attr,
 588                 const char *buf, size_t count)
 589 {
 590         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 591         int nr = sensor_attr->index;
 592         struct i2c_client *client = to_i2c_client(dev);
 593         struct w83792d_data *data = i2c_get_clientdata(client);
 594         u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255) >> 4;
 595
 596         mutex_lock(&data->update_lock);
 597         val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
 598         data->pwm[nr] = val;
 599         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 600         mutex_unlock(&data->update_lock);
 601
 602         return count;
 603 }
 604
 605 static ssize_t
 606 store_pwmenable(struct device *dev, struct device_attribute *attr,
 607                         const char *buf, size_t count)
 608 {
 609         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 610         int nr = sensor_attr->index - 1;
 611         struct i2c_client *client = to_i2c_client(dev);
 612         struct w83792d_data *data = i2c_get_clientdata(client);
 613         u32 val;
 614         u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 615
 616         val = simple_strtoul(buf, NULL, 10);
 617         if (val < 1 || val > 3)
 618                 return -EINVAL;
 619
 620         mutex_lock(&data->update_lock);
 621         switch (val) {
 622         case 1:
 623                 data->pwmenable[nr] = 0; /* manual mode */
 624                 break;
 625         case 2:
 626                 data->pwmenable[nr] = 2; /* Smart Fan II */
 627                 break;
 628         case 3:
 629                 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 630                 break;
 631         }
 632         cfg1_tmp = data->pwmenable[0];
 633         cfg2_tmp = (data->pwmenable[1]) << 2;
 634         cfg3_tmp = (data->pwmenable[2]) << 4;
 635         cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
 636         fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 637         w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
 638         mutex_unlock(&data->update_lock);
 639
 640         return count;
 641 }
 642
 643 static ssize_t
 644 show_pwm_mode(struct device *dev, struct device_attribute *attr,
 645                         char *buf)
 646 {
 647         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 648         int nr = sensor_attr->index;
 649         struct w83792d_data *data = w83792d_update_device(dev);
 650         return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 651 }
 652
 653 static ssize_t
 654 store_pwm_mode(struct device *dev, struct device_attribute *attr,
 655                         const char *buf, size_t count)
 656 {
 657         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 658         int nr = sensor_attr->index;
 659         struct i2c_client *client = to_i2c_client(dev);
 660         struct w83792d_data *data = i2c_get_clientdata(client);
 661         u32 val;
 662
 663         val = simple_strtoul(buf, NULL, 10);
 664         if (val != 0 && val != 1)
 665                 return -EINVAL;
 666
 667         mutex_lock(&data->update_lock);
 668         data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
 669         if (val) {                      /* PWM mode */
 670                 data->pwm[nr] |= 0x80;
 671         } else {                        /* DC mode */
 672                 data->pwm[nr] &= 0x7f;
 673         }
 674         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 675         mutex_unlock(&data->update_lock);
 676
 677         return count;
 678 }
 679
 680 static ssize_t
 681 show_regs_chassis(struct device *dev, struct device_attribute *attr,
 682                         char *buf)
 683 {
 684         struct w83792d_data *data = w83792d_update_device(dev);
 685         return sprintf(buf, "%d\n", data->chassis);
 686 }
 687
 688 static ssize_t
 689 show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
 690 {
 691         struct w83792d_data *data = w83792d_update_device(dev);
 692         return sprintf(buf, "%d\n", data->chassis_clear);
 693 }
 694
 695 static ssize_t
 696 store_chassis_clear(struct device *dev, struct device_attribute *attr,
 697                         const char *buf, size_t count)
 698 {
 699         struct i2c_client *client = to_i2c_client(dev);
 700         struct w83792d_data *data = i2c_get_clientdata(client);
 701         u32 val;
 702         u8 temp1 = 0, temp2 = 0;
 703
 704         val = simple_strtoul(buf, NULL, 10);
 705         mutex_lock(&data->update_lock);
 706         data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
 707         temp1 = ((data->chassis_clear) << 7) & 0x80;
 708         temp2 = w83792d_read_value(client,
 709                 W83792D_REG_CHASSIS_CLR) & 0x7f;
 710         w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
 711         mutex_unlock(&data->update_lock);
 712
 713         return count;
 714 }
 715
 716 /* For Smart Fan I / Thermal Cruise */
 717 static ssize_t
 718 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 719                         char *buf)
 720 {
 721         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 722         int nr = sensor_attr->index;
 723         struct w83792d_data *data = w83792d_update_device(dev);
 724         return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 725 }
 726
 727 static ssize_t
 728 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 729                         const char *buf, size_t count)
 730 {
 731         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 732         int nr = sensor_attr->index - 1;
 733         struct i2c_client *client = to_i2c_client(dev);
 734         struct w83792d_data *data = i2c_get_clientdata(client);
 735         u32 val;
 736         u8 target_tmp=0, target_mask=0;
 737
 738         val = simple_strtoul(buf, NULL, 10);
 739         target_tmp = val;
 740         target_tmp = target_tmp & 0x7f;
 741         mutex_lock(&data->update_lock);
 742         target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
 743         data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
 744         w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 745                 (data->thermal_cruise[nr]) | target_mask);
 746         mutex_unlock(&data->update_lock);
 747
 748         return count;
 749 }
 750
 751 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
 752 static ssize_t
 753 show_tolerance(struct device *dev, struct device_attribute *attr,
 754                 char *buf)
 755 {
 756         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 757         int nr = sensor_attr->index;
 758         struct w83792d_data *data = w83792d_update_device(dev);
 759         return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 760 }
 761
 762 static ssize_t
 763 store_tolerance(struct device *dev, struct device_attribute *attr,
 764                 const char *buf, size_t count)
 765 {
 766         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 767         int nr = sensor_attr->index - 1;
 768         struct i2c_client *client = to_i2c_client(dev);
 769         struct w83792d_data *data = i2c_get_clientdata(client);
 770         u32 val;
 771         u8 tol_tmp, tol_mask;
 772
 773         val = simple_strtoul(buf, NULL, 10);
 774         mutex_lock(&data->update_lock);
 775         tol_mask = w83792d_read_value(client,
 776                 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 777         tol_tmp = SENSORS_LIMIT(val, 0, 15);
 778         tol_tmp &= 0x0f;
 779         data->tolerance[nr] = tol_tmp;
 780         if (nr == 1) {
 781                 tol_tmp <<= 4;
 782         }
 783         w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 784                 tol_mask | tol_tmp);
 785         mutex_unlock(&data->update_lock);
 786
 787         return count;
 788 }
 789
 790 /* For Smart Fan II */
 791 static ssize_t
 792 show_sf2_point(struct device *dev, struct device_attribute *attr,
 793                 char *buf)
 794 {
 795         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 796         int nr = sensor_attr->nr;
 797         int index = sensor_attr->index;
 798         struct w83792d_data *data = w83792d_update_device(dev);
 799         return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 800 }
 801
 802 static ssize_t
 803 store_sf2_point(struct device *dev, struct device_attribute *attr,
 804                 const char *buf, size_t count)
 805 {
 806         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 807         int nr = sensor_attr->nr - 1;
 808         int index = sensor_attr->index - 1;
 809         struct i2c_client *client = to_i2c_client(dev);
 810         struct w83792d_data *data = i2c_get_clientdata(client);
 811         u32 val;
 812         u8 mask_tmp = 0;
 813
 814         val = simple_strtoul(buf, NULL, 10);
 815         mutex_lock(&data->update_lock);
 816         data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
 817         mask_tmp = w83792d_read_value(client,
 818                                         W83792D_REG_POINTS[index][nr]) & 0x80;
 819         w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 820                 mask_tmp|data->sf2_points[index][nr]);
 821         mutex_unlock(&data->update_lock);
 822
 823         return count;
 824 }
 825
 826 static ssize_t
 827 show_sf2_level(struct device *dev, struct device_attribute *attr,
 828                 char *buf)
 829 {
 830         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 831         int nr = sensor_attr->nr;
 832         int index = sensor_attr->index;
 833         struct w83792d_data *data = w83792d_update_device(dev);
 834         return sprintf(buf, "%d\n",
 835                         (((data->sf2_levels[index-1][nr]) * 100) / 15));
 836 }
 837
 838 static ssize_t
 839 store_sf2_level(struct device *dev, struct device_attribute *attr,
 840                 const char *buf, size_t count)
 841 {
 842         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 843         int nr = sensor_attr->nr;
 844         int index = sensor_attr->index - 1;
 845         struct i2c_client *client = to_i2c_client(dev);
 846         struct w83792d_data *data = i2c_get_clientdata(client);
 847         u32 val;
 848         u8 mask_tmp=0, level_tmp=0;
 849
 850         val = simple_strtoul(buf, NULL, 10);
 851         mutex_lock(&data->update_lock);
 852         data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
 853         mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 854                 & ((nr==3) ? 0xf0 : 0x0f);
 855         if (nr==3) {
 856                 level_tmp = data->sf2_levels[index][nr];
 857         } else {
 858                 level_tmp = data->sf2_levels[index][nr] << 4;
 859         }
 860         w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
 861         mutex_unlock(&data->update_lock);
 862
 863         return count;
 864 }
 865
 866 /* This function is called when:
 867      * w83792d_driver is inserted (when this module is loaded), for each
 868        available adapter
 869      * when a new adapter is inserted (and w83792d_driver is still present) */
 870 static int
 871 w83792d_attach_adapter(struct i2c_adapter *adapter)
 872 {
 873         if (!(adapter->class & I2C_CLASS_HWMON))
 874                 return 0;
 875         return i2c_probe(adapter, &addr_data, w83792d_detect);
 876 }
 877
 878
 879 static int
 880 w83792d_create_subclient(struct i2c_adapter *adapter,
 881                                 struct i2c_client *new_client, int addr,
 882                                 struct i2c_client **sub_cli)
 883 {
 884         int err;
 885         struct i2c_client *sub_client;
 886
 887         (*sub_cli) = sub_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 888         if (!(sub_client)) {
 889                 return -ENOMEM;
 890         }
 891         sub_client->addr = 0x48 + addr;
 892         i2c_set_clientdata(sub_client, NULL);
 893         sub_client->adapter = adapter;
 894         sub_client->driver = &w83792d_driver;
 895         sub_client->flags = 0;
 896         strlcpy(sub_client->name, "w83792d subclient", I2C_NAME_SIZE);
 897         if ((err = i2c_attach_client(sub_client))) {
 898                 dev_err(&new_client->dev, "subclient registration "
 899                         "at address 0x%x failed\n", sub_client->addr);
 900                 kfree(sub_client);
 901                 return err;
 902         }
 903         return 0;
 904 }
 905
 906
 907 static int
 908 w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
 909                 struct i2c_client *new_client)
 910 {
 911         int i, id, err;
 912         u8 val;
 913         struct w83792d_data *data = i2c_get_clientdata(new_client);
 914
 915         id = i2c_adapter_id(adapter);
 916         if (force_subclients[0] == id && force_subclients[1] == address) {
 917                 for (i = 2; i <= 3; i++) {
 918                         if (force_subclients[i] < 0x48 ||
 919                             force_subclients[i] > 0x4f) {
 920                                 dev_err(&new_client->dev, "invalid subclient "
 921                                         "address %d; must be 0x48-0x4f\n",
 922                                         force_subclients[i]);
 923                                 err = -ENODEV;
 924                                 goto ERROR_SC_0;
 925                         }
 926                 }
 927                 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
 928                                         (force_subclients[2] & 0x07) |
 929                                         ((force_subclients[3] & 0x07) << 4));
 930         }
 931
 932         val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
 933         if (!(val & 0x08)) {
 934                 err = w83792d_create_subclient(adapter, new_client, val & 0x7,
 935                                                 &data->lm75[0]);
 936                 if (err < 0)
 937                         goto ERROR_SC_0;
 938         }
 939         if (!(val & 0x80)) {
 940                 if ((data->lm75[0] != NULL) &&
 941                         ((val & 0x7) == ((val >> 4) & 0x7))) {
 942                         dev_err(&new_client->dev, "duplicate addresses 0x%x, "
 943                                 "use force_subclient\n", data->lm75[0]->addr);
 944                         err = -ENODEV;
 945                         goto ERROR_SC_1;
 946                 }
 947                 err = w83792d_create_subclient(adapter, new_client,
 948                                                 (val >> 4) & 0x7, &data->lm75[1]);
 949                 if (err < 0)
 950                         goto ERROR_SC_1;
 951         }
 952
 953         return 0;
 954
 955 /* Undo inits in case of errors */
 956
 957 ERROR_SC_1:
 958         if (data->lm75[0] != NULL) {
 959                 i2c_detach_client(data->lm75[0]);
 960                 kfree(data->lm75[0]);
 961         }
 962 ERROR_SC_0:
 963         return err;
 964 }
 965
 966 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 967 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 968 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 969 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 970 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
 971 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
 972 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
 973 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
 974 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
 975 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
 976                         show_in_min, store_in_min, 0);
 977 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
 978                         show_in_min, store_in_min, 1);
 979 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
 980                         show_in_min, store_in_min, 2);
 981 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
 982                         show_in_min, store_in_min, 3);
 983 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
 984                         show_in_min, store_in_min, 4);
 985 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
 986                         show_in_min, store_in_min, 5);
 987 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
 988                         show_in_min, store_in_min, 6);
 989 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
 990                         show_in_min, store_in_min, 7);
 991 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
 992                         show_in_min, store_in_min, 8);
 993 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
 994                         show_in_max, store_in_max, 0);
 995 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
 996                         show_in_max, store_in_max, 1);
 997 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
 998                         show_in_max, store_in_max, 2);
 999 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
1000                         show_in_max, store_in_max, 3);
1001 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
1002                         show_in_max, store_in_max, 4);
1003 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
1004                         show_in_max, store_in_max, 5);
1005 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
1006                         show_in_max, store_in_max, 6);
1007 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
1008                         show_in_max, store_in_max, 7);
1009 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
1010                         show_in_max, store_in_max, 8);
1011 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
1012 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
1013 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
1014 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1015                         show_temp1, store_temp1, 0, 1);
1016 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
1017                         store_temp23, 0, 2);
1018 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
1019                         store_temp23, 1, 2);
1020 static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1021                         show_temp1, store_temp1, 0, 2);
1022 static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1023                         show_temp23, store_temp23, 0, 4);
1024 static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1025                         show_temp23, store_temp23, 1, 4);
1026 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1027 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
1028 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
1029 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
1030 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
1031 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1032 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1033 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1034 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1035 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1036 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1037 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1038 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1039 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1040 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1041 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1042 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1043 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1044 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1045 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1046 static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
1047 static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
1048                         show_chassis_clear, store_chassis_clear);
1049 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1050 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1051 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1052 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1053                         show_pwmenable, store_pwmenable, 1);
1054 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1055                         show_pwmenable, store_pwmenable, 2);
1056 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1057                         show_pwmenable, store_pwmenable, 3);
1058 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1059                         show_pwm_mode, store_pwm_mode, 0);
1060 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1061                         show_pwm_mode, store_pwm_mode, 1);
1062 static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1063                         show_pwm_mode, store_pwm_mode, 2);
1064 static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1065                         show_tolerance, store_tolerance, 1);
1066 static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1067                         show_tolerance, store_tolerance, 2);
1068 static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1069                         show_tolerance, store_tolerance, 3);
1070 static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1071                         show_thermal_cruise, store_thermal_cruise, 1);
1072 static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1073                         show_thermal_cruise, store_thermal_cruise, 2);
1074 static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1075                         show_thermal_cruise, store_thermal_cruise, 3);
1076 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1077                         show_sf2_point, store_sf2_point, 1, 1);
1078 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1079                         show_sf2_point, store_sf2_point, 2, 1);
1080 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1081                         show_sf2_point, store_sf2_point, 3, 1);
1082 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1083                         show_sf2_point, store_sf2_point, 4, 1);
1084 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1085                         show_sf2_point, store_sf2_point, 1, 2);
1086 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1087                         show_sf2_point, store_sf2_point, 2, 2);
1088 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1089                         show_sf2_point, store_sf2_point, 3, 2);
1090 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1091                         show_sf2_point, store_sf2_point, 4, 2);
1092 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1093                         show_sf2_point, store_sf2_point, 1, 3);
1094 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1095                         show_sf2_point, store_sf2_point, 2, 3);
1096 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1097                         show_sf2_point, store_sf2_point, 3, 3);
1098 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1099                         show_sf2_point, store_sf2_point, 4, 3);
1100 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1101                         show_sf2_level, store_sf2_level, 1, 1);
1102 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1103                         show_sf2_level, store_sf2_level, 2, 1);
1104 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1105                         show_sf2_level, store_sf2_level, 3, 1);
1106 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1107                         show_sf2_level, store_sf2_level, 1, 2);
1108 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1109                         show_sf2_level, store_sf2_level, 2, 2);
1110 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1111                         show_sf2_level, store_sf2_level, 3, 2);
1112 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1113                         show_sf2_level, store_sf2_level, 1, 3);
1114 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1115                         show_sf2_level, store_sf2_level, 2, 3);
1116 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1117                         show_sf2_level, store_sf2_level, 3, 3);
1118 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1119 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1120 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1121 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1122 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1123 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1124 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1125 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1126                         show_fan_min, store_fan_min, 1);
1127 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1128                         show_fan_min, store_fan_min, 2);
1129 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1130                         show_fan_min, store_fan_min, 3);
1131 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1132                         show_fan_min, store_fan_min, 4);
1133 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1134                         show_fan_min, store_fan_min, 5);
1135 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1136                         show_fan_min, store_fan_min, 6);
1137 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1138                         show_fan_min, store_fan_min, 7);
1139 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1140                         show_fan_div, store_fan_div, 1);
1141 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1142                         show_fan_div, store_fan_div, 2);
1143 static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1144                         show_fan_div, store_fan_div, 3);
1145 static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1146                         show_fan_div, store_fan_div, 4);
1147 static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1148                         show_fan_div, store_fan_div, 5);
1149 static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1150                         show_fan_div, store_fan_div, 6);
1151 static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1152                         show_fan_div, store_fan_div, 7);
1153
1154 static struct attribute *w83792d_attributes_fan[4][5] = {
1155         {
1156                 &sensor_dev_attr_fan4_input.dev_attr.attr,
1157                 &sensor_dev_attr_fan4_min.dev_attr.attr,
1158                 &sensor_dev_attr_fan4_div.dev_attr.attr,
1159                 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1160                 NULL
1161         }, {
1162                 &sensor_dev_attr_fan5_input.dev_attr.attr,
1163                 &sensor_dev_attr_fan5_min.dev_attr.attr,
1164                 &sensor_dev_attr_fan5_div.dev_attr.attr,
1165                 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1166                 NULL
1167         }, {
1168                 &sensor_dev_attr_fan6_input.dev_attr.attr,
1169                 &sensor_dev_attr_fan6_min.dev_attr.attr,
1170                 &sensor_dev_attr_fan6_div.dev_attr.attr,
1171                 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1172                 NULL
1173         }, {
1174                 &sensor_dev_attr_fan7_input.dev_attr.attr,
1175                 &sensor_dev_attr_fan7_min.dev_attr.attr,
1176                 &sensor_dev_attr_fan7_div.dev_attr.attr,
1177                 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1178                 NULL
1179         }
1180 };
1181
1182 static const struct attribute_group w83792d_group_fan[4] = {
1183         { .attrs = w83792d_attributes_fan[0] },
1184         { .attrs = w83792d_attributes_fan[1] },
1185         { .attrs = w83792d_attributes_fan[2] },
1186         { .attrs = w83792d_attributes_fan[3] },
1187 };
1188
1189 static struct attribute *w83792d_attributes[] = {
1190         &sensor_dev_attr_in0_input.dev_attr.attr,
1191         &sensor_dev_attr_in0_max.dev_attr.attr,
1192         &sensor_dev_attr_in0_min.dev_attr.attr,
1193         &sensor_dev_attr_in1_input.dev_attr.attr,
1194         &sensor_dev_attr_in1_max.dev_attr.attr,
1195         &sensor_dev_attr_in1_min.dev_attr.attr,
1196         &sensor_dev_attr_in2_input.dev_attr.attr,
1197         &sensor_dev_attr_in2_max.dev_attr.attr,
1198         &sensor_dev_attr_in2_min.dev_attr.attr,
1199         &sensor_dev_attr_in3_input.dev_attr.attr,
1200         &sensor_dev_attr_in3_max.dev_attr.attr,
1201         &sensor_dev_attr_in3_min.dev_attr.attr,
1202         &sensor_dev_attr_in4_input.dev_attr.attr,
1203         &sensor_dev_attr_in4_max.dev_attr.attr,
1204         &sensor_dev_attr_in4_min.dev_attr.attr,
1205         &sensor_dev_attr_in5_input.dev_attr.attr,
1206         &sensor_dev_attr_in5_max.dev_attr.attr,
1207         &sensor_dev_attr_in5_min.dev_attr.attr,
1208         &sensor_dev_attr_in6_input.dev_attr.attr,
1209         &sensor_dev_attr_in6_max.dev_attr.attr,
1210         &sensor_dev_attr_in6_min.dev_attr.attr,
1211         &sensor_dev_attr_in7_input.dev_attr.attr,
1212         &sensor_dev_attr_in7_max.dev_attr.attr,
1213         &sensor_dev_attr_in7_min.dev_attr.attr,
1214         &sensor_dev_attr_in8_input.dev_attr.attr,
1215         &sensor_dev_attr_in8_max.dev_attr.attr,
1216         &sensor_dev_attr_in8_min.dev_attr.attr,
1217         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1218         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1219         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1220         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1221         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1222         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1223         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1224         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1225         &sensor_dev_attr_in8_alarm.dev_attr.attr,
1226         &sensor_dev_attr_temp1_input.dev_attr.attr,
1227         &sensor_dev_attr_temp1_max.dev_attr.attr,
1228         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1229         &sensor_dev_attr_temp2_input.dev_attr.attr,
1230         &sensor_dev_attr_temp2_max.dev_attr.attr,
1231         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1232         &sensor_dev_attr_temp3_input.dev_attr.attr,
1233         &sensor_dev_attr_temp3_max.dev_attr.attr,
1234         &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1235         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1236         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1237         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1238         &sensor_dev_attr_pwm1.dev_attr.attr,
1239         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1240         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1241         &sensor_dev_attr_pwm2.dev_attr.attr,
1242         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1243         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1244         &sensor_dev_attr_pwm3.dev_attr.attr,
1245         &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1246         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1247         &dev_attr_alarms.attr,
1248         &dev_attr_chassis.attr,
1249         &dev_attr_chassis_clear.attr,
1250         &sensor_dev_attr_tolerance1.dev_attr.attr,
1251         &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1252         &sensor_dev_attr_tolerance2.dev_attr.attr,
1253         &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1254         &sensor_dev_attr_tolerance3.dev_attr.attr,
1255         &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1256         &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1257         &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1258         &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1259         &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1260         &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1261         &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1262         &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1263         &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1264         &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1265         &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1266         &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1267         &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1268         &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1269         &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1270         &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1271         &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1272         &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1273         &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1274         &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1275         &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1276         &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1277         &sensor_dev_attr_fan1_input.dev_attr.attr,
1278         &sensor_dev_attr_fan1_min.dev_attr.attr,
1279         &sensor_dev_attr_fan1_div.dev_attr.attr,
1280         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1281         &sensor_dev_attr_fan2_input.dev_attr.attr,
1282         &sensor_dev_attr_fan2_min.dev_attr.attr,
1283         &sensor_dev_attr_fan2_div.dev_attr.attr,
1284         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1285         &sensor_dev_attr_fan3_input.dev_attr.attr,
1286         &sensor_dev_attr_fan3_min.dev_attr.attr,
1287         &sensor_dev_attr_fan3_div.dev_attr.attr,
1288         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1289         NULL
1290 };
1291
1292 static const struct attribute_group w83792d_group = {
1293         .attrs = w83792d_attributes,
1294 };
1295
1296 static int
1297 w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
1298 {
1299         int i = 0, val1 = 0, val2;
1300         struct i2c_client *client;
1301         struct device *dev;
1302         struct w83792d_data *data;
1303         int err = 0;
1304         const char *client_name = "";
1305
1306         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1307                 goto ERROR0;
1308         }
1309
1310         /* OK. For now, we presume we have a valid client. We now create the
1311            client structure, even though we cannot fill it completely yet.
1312            But it allows us to access w83792d_{read,write}_value. */
1313
1314         if (!(data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
1315                 err = -ENOMEM;
1316                 goto ERROR0;
1317         }
1318
1319         client = &data->client;
1320         dev = &client->dev;
1321         i2c_set_clientdata(client, data);
1322         client->addr = address;
1323         client->adapter = adapter;
1324         client->driver = &w83792d_driver;
1325         client->flags = 0;
1326
1327         /* Now, we do the remaining detection. */
1328
1329         /* The w83792d may be stuck in some other bank than bank 0. This may
1330            make reading other information impossible. Specify a force=... or
1331            force_*=... parameter, and the Winbond will be reset to the right
1332            bank. */
1333         if (kind < 0) {
1334                 if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80) {
1335                         dev_dbg(dev, "Detection failed at step 1\n");
1336                         goto ERROR1;
1337                 }
1338                 val1 = w83792d_read_value(client, W83792D_REG_BANK);
1339                 val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1340                 /* Check for Winbond ID if in bank 0 */
1341                 if (!(val1 & 0x07)) {  /* is Bank0 */
1342                         if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
1343                              ((val1 & 0x80) && (val2 != 0x5c))) {
1344                                 dev_dbg(dev, "Detection failed at step 2\n");
1345                                 goto ERROR1;
1346                         }
1347                 }
1348                 /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1349                    should match */
1350                 if (w83792d_read_value(client,
1351                                         W83792D_REG_I2C_ADDR) != address) {
1352                         dev_dbg(dev, "Detection failed at step 3\n");
1353                         goto ERROR1;
1354                 }
1355         }
1356
1357         /* We have either had a force parameter, or we have already detected the
1358            Winbond. Put it now into bank 0 and Vendor ID High Byte */
1359         w83792d_write_value(client,
1360                             W83792D_REG_BANK,
1361                             (w83792d_read_value(client,
1362                                 W83792D_REG_BANK) & 0x78) | 0x80);
1363
1364         /* Determine the chip type. */
1365         if (kind <= 0) {
1366                 /* get vendor ID */
1367                 val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1368                 if (val2 != 0x5c) {  /* the vendor is NOT Winbond */
1369                         goto ERROR1;
1370                 }
1371                 val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1372                 if (val1 == 0x7a) {
1373                         kind = w83792d;
1374                 } else {
1375                         if (kind == 0)
1376                                         dev_warn(dev,
1377                                         "w83792d: Ignoring 'force' parameter for"
1378                                         " unknown chip at adapter %d, address"
1379                                         " 0x%02x\n", i2c_adapter_id(adapter),
1380                                         address);
1381                         goto ERROR1;
1382                 }
1383         }
1384
1385         if (kind == w83792d) {
1386                 client_name = "w83792d";
1387         } else {
1388                 dev_err(dev, "w83792d: Internal error: unknown kind (%d)?!?\n",
1389                         kind);
1390                 goto ERROR1;
1391         }
1392
1393         /* Fill in the remaining client fields and put into the global list */
1394         strlcpy(client->name, client_name, I2C_NAME_SIZE);
1395         data->type = kind;
1396
1397         data->valid = 0;
1398         mutex_init(&data->update_lock);
1399
1400         /* Tell the I2C layer a new client has arrived */
1401         if ((err = i2c_attach_client(client)))
1402                 goto ERROR1;
1403
1404         if ((err = w83792d_detect_subclients(adapter, address,
1405                         kind, client)))
1406                 goto ERROR2;
1407
1408         /* Initialize the chip */
1409         w83792d_init_client(client);
1410
1411         /* A few vars need to be filled upon startup */
1412         for (i = 0; i < 7; i++) {
1413                 data->fan_min[i] = w83792d_read_value(client,
1414                                         W83792D_REG_FAN_MIN[i]);
1415         }
1416
1417         /* Register sysfs hooks */
1418         if ((err = sysfs_create_group(&dev->kobj, &w83792d_group)))
1419                 goto ERROR3;
1420
1421         /* Read GPIO enable register to check if pins for fan 4,5 are used as
1422            GPIO */
1423         val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1424
1425         if (!(val1 & 0x40))
1426                 if ((err = sysfs_create_group(&dev->kobj,
1427                                               &w83792d_group_fan[0])))
1428                         goto exit_remove_files;
1429
1430         if (!(val1 & 0x20))
1431                 if ((err = sysfs_create_group(&dev->kobj,
1432                                               &w83792d_group_fan[1])))
1433                         goto exit_remove_files;
1434
1435         val1 = w83792d_read_value(client, W83792D_REG_PIN);
1436         if (val1 & 0x40)
1437                 if ((err = sysfs_create_group(&dev->kobj,
1438                                               &w83792d_group_fan[2])))
1439                         goto exit_remove_files;
1440
1441         if (val1 & 0x04)
1442                 if ((err = sysfs_create_group(&dev->kobj,
1443                                               &w83792d_group_fan[3])))
1444                         goto exit_remove_files;
1445
1446         data->hwmon_dev = hwmon_device_register(dev);
1447         if (IS_ERR(data->hwmon_dev)) {
1448                 err = PTR_ERR(data->hwmon_dev);
1449                 goto exit_remove_files;
1450         }
1451
1452         return 0;
1453
1454 exit_remove_files:
1455         sysfs_remove_group(&dev->kobj, &w83792d_group);
1456         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1457                 sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1458 ERROR3:
1459         if (data->lm75[0] != NULL) {
1460                 i2c_detach_client(data->lm75[0]);
1461                 kfree(data->lm75[0]);
1462         }
1463         if (data->lm75[1] != NULL) {
1464                 i2c_detach_client(data->lm75[1]);
1465                 kfree(data->lm75[1]);
1466         }
1467 ERROR2:
1468         i2c_detach_client(client);
1469 ERROR1:
1470         kfree(data);
1471 ERROR0:
1472         return err;
1473 }
1474
1475 static int
1476 w83792d_detach_client(struct i2c_client *client)
1477 {
1478         struct w83792d_data *data = i2c_get_clientdata(client);
1479         int err, i;
1480
1481         /* main client */
1482         if (data) {
1483                 hwmon_device_unregister(data->hwmon_dev);
1484                 sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1485                 for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1486                         sysfs_remove_group(&client->dev.kobj,
1487                                            &w83792d_group_fan[i]);
1488         }
1489
1490         if ((err = i2c_detach_client(client)))
1491                 return err;
1492
1493         /* main client */
1494         if (data)
1495                 kfree(data);
1496         /* subclient */
1497         else
1498                 kfree(client);
1499
1500         return 0;
1501 }
1502
1503 static void
1504 w83792d_init_client(struct i2c_client *client)
1505 {
1506         u8 temp2_cfg, temp3_cfg, vid_in_b;
1507
1508         if (init) {
1509                 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1510         }
1511         /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1512            W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1513              vin0/vin1 can be modified by user;
1514            W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1515              vin0/vin1 auto-updated, can NOT be modified by user. */
1516         vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1517         w83792d_write_value(client, W83792D_REG_VID_IN_B,
1518                             vid_in_b & 0xbf);
1519
1520         temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1521         temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1522         w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1523                                 temp2_cfg & 0xe6);
1524         w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1525                                 temp3_cfg & 0xe6);
1526
1527         /* Start monitoring */
1528         w83792d_write_value(client, W83792D_REG_CONFIG,
1529                             (w83792d_read_value(client,
1530                                                 W83792D_REG_CONFIG) & 0xf7)
1531                             | 0x01);
1532 }
1533
1534 static struct w83792d_data *w83792d_update_device(struct device *dev)
1535 {
1536         struct i2c_client *client = to_i2c_client(dev);
1537         struct w83792d_data *data = i2c_get_clientdata(client);
1538         int i, j;
1539         u8 reg_array_tmp[4], reg_tmp;
1540
1541         mutex_lock(&data->update_lock);
1542
1543         if (time_after
1544             (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1545             || time_before(jiffies, data->last_updated) || !data->valid) {
1546                 dev_dbg(dev, "Starting device update\n");
1547
1548                 /* Update the voltages measured value and limits */
1549                 for (i = 0; i < 9; i++) {
1550                         data->in[i] = w83792d_read_value(client,
1551                                                 W83792D_REG_IN[i]);
1552                         data->in_max[i] = w83792d_read_value(client,
1553                                                 W83792D_REG_IN_MAX[i]);
1554                         data->in_min[i] = w83792d_read_value(client,
1555                                                 W83792D_REG_IN_MIN[i]);
1556                 }
1557                 data->low_bits = w83792d_read_value(client,
1558                                                 W83792D_REG_LOW_BITS1) +
1559                                  (w83792d_read_value(client,
1560                                                 W83792D_REG_LOW_BITS2) << 8);
1561                 for (i = 0; i < 7; i++) {
1562                         /* Update the Fan measured value and limits */
1563                         data->fan[i] = w83792d_read_value(client,
1564                                                 W83792D_REG_FAN[i]);
1565                         data->fan_min[i] = w83792d_read_value(client,
1566                                                 W83792D_REG_FAN_MIN[i]);
1567                         /* Update the PWM/DC Value and PWM/DC flag */
1568                         data->pwm[i] = w83792d_read_value(client,
1569                                                 W83792D_REG_PWM[i]);
1570                 }
1571
1572                 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1573                 data->pwmenable[0] = reg_tmp & 0x03;
1574                 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1575                 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1576
1577                 for (i = 0; i < 3; i++) {
1578                         data->temp1[i] = w83792d_read_value(client,
1579                                                         W83792D_REG_TEMP1[i]);
1580                 }
1581                 for (i = 0; i < 2; i++) {
1582                         for (j = 0; j < 6; j++) {
1583                                 data->temp_add[i][j] = w83792d_read_value(
1584                                         client,W83792D_REG_TEMP_ADD[i][j]);
1585                         }
1586                 }
1587
1588                 /* Update the Fan Divisor */
1589                 for (i = 0; i < 4; i++) {
1590                         reg_array_tmp[i] = w83792d_read_value(client,
1591                                                         W83792D_REG_FAN_DIV[i]);
1592                 }
1593                 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1594                 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1595                 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1596                 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1597                 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1598                 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1599                 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1600
1601                 /* Update the realtime status */
1602                 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1603                         (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1604                         (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1605
1606                 /* Update CaseOpen status and it's CLR_CHS. */
1607                 data->chassis = (w83792d_read_value(client,
1608                         W83792D_REG_CHASSIS) >> 5) & 0x01;
1609                 data->chassis_clear = (w83792d_read_value(client,
1610                         W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
1611
1612                 /* Update Thermal Cruise/Smart Fan I target value */
1613                 for (i = 0; i < 3; i++) {
1614                         data->thermal_cruise[i] =
1615                                 w83792d_read_value(client,
1616                                 W83792D_REG_THERMAL[i]) & 0x7f;
1617                 }
1618
1619                 /* Update Smart Fan I/II tolerance */
1620                 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1621                 data->tolerance[0] = reg_tmp & 0x0f;
1622                 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1623                 data->tolerance[2] = w83792d_read_value(client,
1624                                         W83792D_REG_TOLERANCE[2]) & 0x0f;
1625
1626                 /* Update Smart Fan II temperature points */
1627                 for (i = 0; i < 3; i++) {
1628                         for (j = 0; j < 4; j++) {
1629                                 data->sf2_points[i][j] = w83792d_read_value(
1630                                         client,W83792D_REG_POINTS[i][j]) & 0x7f;
1631                         }
1632                 }
1633
1634                 /* Update Smart Fan II duty cycle levels */
1635                 for (i = 0; i < 3; i++) {
1636                         reg_tmp = w83792d_read_value(client,
1637                                                 W83792D_REG_LEVELS[i][0]);
1638                         data->sf2_levels[i][0] = reg_tmp & 0x0f;
1639                         data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1640                         reg_tmp = w83792d_read_value(client,
1641                                                 W83792D_REG_LEVELS[i][2]);
1642                         data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1643                         data->sf2_levels[i][3] = reg_tmp & 0x0f;
1644                 }
1645
1646                 data->last_updated = jiffies;
1647                 data->valid = 1;
1648         }
1649
1650         mutex_unlock(&data->update_lock);
1651
1652 #ifdef DEBUG
1653         w83792d_print_debug(data, dev);
1654 #endif
1655
1656         return data;
1657 }
1658
1659 #ifdef DEBUG
1660 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1661 {
1662         int i=0, j=0;
1663         dev_dbg(dev, "==========The following is the debug message...========\n");
1664         dev_dbg(dev, "9 set of Voltages: =====>\n");
1665         for (i=0; i<9; i++) {
1666                 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1667                 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1668                 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1669         }
1670         dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1671         dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1672         dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1673         for (i=0; i<7; i++) {
1674                 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1675                 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1676                 dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1677         }
1678         dev_dbg(dev, "3 set of Temperatures: =====>\n");
1679         for (i=0; i<3; i++) {
1680                 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1681         }
1682
1683         for (i=0; i<2; i++) {
1684                 for (j=0; j<6; j++) {
1685                         dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1686                                                         data->temp_add[i][j]);
1687                 }
1688         }
1689
1690         for (i=0; i<7; i++) {
1691                 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1692         }
1693         dev_dbg(dev, "==========End of the debug message...==================\n");
1694         dev_dbg(dev, "\n");
1695 }
1696 #endif
1697
1698 static int __init
1699 sensors_w83792d_init(void)
1700 {
1701         return i2c_add_driver(&w83792d_driver);
1702 }
1703
1704 static void __exit
1705 sensors_w83792d_exit(void)
1706 {
1707         i2c_del_driver(&w83792d_driver);
1708 }
1709
1710 MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
1711 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1712 MODULE_LICENSE("GPL");
1713
1714 module_init(sensors_w83792d_init);
1715 module_exit(sensors_w83792d_exit);
1716