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@sh.cvut.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/config.h>
  39 #include <linux/module.h>
  40 #include <linux/init.h>
  41 #include <linux/slab.h>
  42 #include <linux/i2c.h>
  43 #include <linux/hwmon.h>
  44 #include <linux/hwmon-sysfs.h>
  45 #include <linux/err.h>
  46
  47 /* Addresses to scan */
  48 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
  49
  50 /* Insmod parameters */
  51 I2C_CLIENT_INSMOD_1(w83792d);
  52 I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
  53                         "{bus, clientaddr, subclientaddr1, subclientaddr2}");
  54
  55 static int init;
  56 module_param(init, bool, 0);
  57 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
  58
  59 /* The W83792D registers */
  60 static const u8 W83792D_REG_IN[9] = {
  61         0x20,   /* Vcore A in DataSheet */
  62         0x21,   /* Vcore B in DataSheet */
  63         0x22,   /* VIN0 in DataSheet */
  64         0x23,   /* VIN1 in DataSheet */
  65         0x24,   /* VIN2 in DataSheet */
  66         0x25,   /* VIN3 in DataSheet */
  67         0x26,   /* 5VCC in DataSheet */
  68         0xB0,   /* 5VSB in DataSheet */
  69         0xB1    /* VBAT in DataSheet */
  70 };
  71 #define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
  72 #define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
  73 static const u8 W83792D_REG_IN_MAX[9] = {
  74         0x2B,   /* Vcore A High Limit in DataSheet */
  75         0x2D,   /* Vcore B High Limit in DataSheet */
  76         0x2F,   /* VIN0 High Limit in DataSheet */
  77         0x31,   /* VIN1 High Limit in DataSheet */
  78         0x33,   /* VIN2 High Limit in DataSheet */
  79         0x35,   /* VIN3 High Limit in DataSheet */
  80         0x37,   /* 5VCC High Limit in DataSheet */
  81         0xB4,   /* 5VSB High Limit in DataSheet */
  82         0xB6    /* VBAT High Limit in DataSheet */
  83 };
  84 static const u8 W83792D_REG_IN_MIN[9] = {
  85         0x2C,   /* Vcore A Low Limit in DataSheet */
  86         0x2E,   /* Vcore B Low Limit in DataSheet */
  87         0x30,   /* VIN0 Low Limit in DataSheet */
  88         0x32,   /* VIN1 Low Limit in DataSheet */
  89         0x34,   /* VIN2 Low Limit in DataSheet */
  90         0x36,   /* VIN3 Low Limit in DataSheet */
  91         0x38,   /* 5VCC Low Limit in DataSheet */
  92         0xB5,   /* 5VSB Low Limit in DataSheet */
  93         0xB7    /* VBAT Low Limit in DataSheet */
  94 };
  95 static const u8 W83792D_REG_FAN[7] = {
  96         0x28,   /* FAN 1 Count in DataSheet */
  97         0x29,   /* FAN 2 Count in DataSheet */
  98         0x2A,   /* FAN 3 Count in DataSheet */
  99         0xB8,   /* FAN 4 Count in DataSheet */
 100         0xB9,   /* FAN 5 Count in DataSheet */
 101         0xBA,   /* FAN 6 Count in DataSheet */
 102         0xBE    /* FAN 7 Count in DataSheet */
 103 };
 104 static const u8 W83792D_REG_FAN_MIN[7] = {
 105         0x3B,   /* FAN 1 Count Low Limit in DataSheet */
 106         0x3C,   /* FAN 2 Count Low Limit in DataSheet */
 107         0x3D,   /* FAN 3 Count Low Limit in DataSheet */
 108         0xBB,   /* FAN 4 Count Low Limit in DataSheet */
 109         0xBC,   /* FAN 5 Count Low Limit in DataSheet */
 110         0xBD,   /* FAN 6 Count Low Limit in DataSheet */
 111         0xBF    /* FAN 7 Count Low Limit in DataSheet */
 112 };
 113 #define W83792D_REG_FAN_CFG 0x84        /* FAN Configuration in DataSheet */
 114 static const u8 W83792D_REG_FAN_DIV[4] = {
 115         0x47,   /* contains FAN2 and FAN1 Divisor */
 116         0x5B,   /* contains FAN4 and FAN3 Divisor */
 117         0x5C,   /* contains FAN6 and FAN5 Divisor */
 118         0x9E    /* contains FAN7 Divisor. */
 119 };
 120 static const u8 W83792D_REG_PWM[7] = {
 121         0x81,   /* FAN 1 Duty Cycle, be used to control */
 122         0x83,   /* FAN 2 Duty Cycle, be used to control */
 123         0x94,   /* FAN 3 Duty Cycle, be used to control */
 124         0xA3,   /* FAN 4 Duty Cycle, be used to control */
 125         0xA4,   /* FAN 5 Duty Cycle, be used to control */
 126         0xA5,   /* FAN 6 Duty Cycle, be used to control */
 127         0xA6    /* FAN 7 Duty Cycle, be used to control */
 128 };
 129 #define W83792D_REG_BANK                0x4E
 130 #define W83792D_REG_TEMP2_CONFIG        0xC2
 131 #define W83792D_REG_TEMP3_CONFIG        0xCA
 132
 133 static const u8 W83792D_REG_TEMP1[3] = {
 134         0x27,   /* TEMP 1 in DataSheet */
 135         0x39,   /* TEMP 1 Over in DataSheet */
 136         0x3A,   /* TEMP 1 Hyst in DataSheet */
 137 };
 138
 139 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
 140         { 0xC0,         /* TEMP 2 in DataSheet */
 141           0xC1,         /* TEMP 2(0.5 deg) in DataSheet */
 142           0xC5,         /* TEMP 2 Over High part in DataSheet */
 143           0xC6,         /* TEMP 2 Over Low part in DataSheet */
 144           0xC3,         /* TEMP 2 Thyst High part in DataSheet */
 145           0xC4 },       /* TEMP 2 Thyst Low part in DataSheet */
 146         { 0xC8,         /* TEMP 3 in DataSheet */
 147           0xC9,         /* TEMP 3(0.5 deg) in DataSheet */
 148           0xCD,         /* TEMP 3 Over High part in DataSheet */
 149           0xCE,         /* TEMP 3 Over Low part in DataSheet */
 150           0xCB,         /* TEMP 3 Thyst High part in DataSheet */
 151           0xCC }        /* TEMP 3 Thyst Low part in DataSheet */
 152 };
 153
 154 static const u8 W83792D_REG_THERMAL[3] = {
 155         0x85,   /* SmartFanI: Fan1 target value */
 156         0x86,   /* SmartFanI: Fan2 target value */
 157         0x96    /* SmartFanI: Fan3 target value */
 158 };
 159
 160 static const u8 W83792D_REG_TOLERANCE[3] = {
 161         0x87,   /* (bit3-0)SmartFan Fan1 tolerance */
 162         0x87,   /* (bit7-4)SmartFan Fan2 tolerance */
 163         0x97    /* (bit3-0)SmartFan Fan3 tolerance */
 164 };
 165
 166 static const u8 W83792D_REG_POINTS[3][4] = {
 167         { 0x85,         /* SmartFanII: Fan1 temp point 1 */
 168           0xE3,         /* SmartFanII: Fan1 temp point 2 */
 169           0xE4,         /* SmartFanII: Fan1 temp point 3 */
 170           0xE5 },       /* SmartFanII: Fan1 temp point 4 */
 171         { 0x86,         /* SmartFanII: Fan2 temp point 1 */
 172           0xE6,         /* SmartFanII: Fan2 temp point 2 */
 173           0xE7,         /* SmartFanII: Fan2 temp point 3 */
 174           0xE8 },       /* SmartFanII: Fan2 temp point 4 */
 175         { 0x96,         /* SmartFanII: Fan3 temp point 1 */
 176           0xE9,         /* SmartFanII: Fan3 temp point 2 */
 177           0xEA,         /* SmartFanII: Fan3 temp point 3 */
 178           0xEB }        /* SmartFanII: Fan3 temp point 4 */
 179 };
 180
 181 static const u8 W83792D_REG_LEVELS[3][4] = {
 182         { 0x88,         /* (bit3-0) SmartFanII: Fan1 Non-Stop */
 183           0x88,         /* (bit7-4) SmartFanII: Fan1 Level 1 */
 184           0xE0,         /* (bit7-4) SmartFanII: Fan1 Level 2 */
 185           0xE0 },       /* (bit3-0) SmartFanII: Fan1 Level 3 */
 186         { 0x89,         /* (bit3-0) SmartFanII: Fan2 Non-Stop */
 187           0x89,         /* (bit7-4) SmartFanII: Fan2 Level 1 */
 188           0xE1,         /* (bit7-4) SmartFanII: Fan2 Level 2 */
 189           0xE1 },       /* (bit3-0) SmartFanII: Fan2 Level 3 */
 190         { 0x98,         /* (bit3-0) SmartFanII: Fan3 Non-Stop */
 191           0x98,         /* (bit7-4) SmartFanII: Fan3 Level 1 */
 192           0xE2,         /* (bit7-4) SmartFanII: Fan3 Level 2 */
 193           0xE2 }        /* (bit3-0) SmartFanII: Fan3 Level 3 */
 194 };
 195
 196 #define W83792D_REG_CONFIG              0x40
 197 #define W83792D_REG_VID_FANDIV          0x47
 198 #define W83792D_REG_CHIPID              0x49
 199 #define W83792D_REG_WCHIPID             0x58
 200 #define W83792D_REG_CHIPMAN             0x4F
 201 #define W83792D_REG_PIN                 0x4B
 202 #define W83792D_REG_I2C_SUBADDR         0x4A
 203
 204 #define W83792D_REG_ALARM1 0xA9         /* realtime status register1 */
 205 #define W83792D_REG_ALARM2 0xAA         /* realtime status register2 */
 206 #define W83792D_REG_ALARM3 0xAB         /* realtime status register3 */
 207 #define W83792D_REG_CHASSIS 0x42        /* Bit 5: Case Open status bit */
 208 #define W83792D_REG_CHASSIS_CLR 0x44    /* Bit 7: Case Open CLR_CHS/Reset bit */
 209
 210 /* control in0/in1 's limit modifiability */
 211 #define W83792D_REG_VID_IN_B            0x17
 212
 213 #define W83792D_REG_VBAT                0x5D
 214 #define W83792D_REG_I2C_ADDR            0x48
 215
 216 /* Conversions. Rounding and limit checking is only done on the TO_REG
 217    variants. Note that you should be a bit careful with which arguments
 218    these macros are called: arguments may be evaluated more than once.
 219    Fixing this is just not worth it. */
 220 #define IN_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
 221                                 ((((nr)==6)||((nr)==7))?(val*6):(val*4)))
 222 #define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
 223                                 ((((nr)==6)||((nr)==7))?(val/6):(val/4)))
 224
 225 static inline u8
 226 FAN_TO_REG(long rpm, int div)
 227 {
 228         if (rpm == 0)
 229                 return 255;
 230         rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 231         return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 232 }
 233
 234 #define FAN_FROM_REG(val,div)   ((val) == 0   ? -1 : \
 235                                 ((val) == 255 ? 0 : \
 236                                                 1350000 / ((val) * (div))))
 237
 238 /* for temp1 */
 239 #define TEMP1_TO_REG(val)       (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 240                                         : (val)) / 1000, 0, 0xff))
 241 #define TEMP1_FROM_REG(val)     (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 242 /* for temp2 and temp3, because they need addtional resolution */
 243 #define TEMP_ADD_FROM_REG(val1, val2) \
 244         ((((val1) & 0x80 ? (val1)-0x100 \
 245                 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
 246 #define TEMP_ADD_TO_REG_HIGH(val) \
 247         (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 248                         : (val)) / 1000, 0, 0xff))
 249 #define TEMP_ADD_TO_REG_LOW(val)        ((val%1000) ? 0x80 : 0x00)
 250
 251 #define PWM_FROM_REG(val)               (val)
 252 #define PWM_TO_REG(val)                 (SENSORS_LIMIT((val),0,255))
 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 < 6; 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 class_device *class_dev;
 271         struct semaphore lock;
 272         enum chips type;
 273
 274         struct semaphore update_lock;
 275         char valid;             /* !=0 if following fields are valid */
 276         unsigned long last_updated;     /* In jiffies */
 277
 278         /* array of 2 pointers to subclients */
 279         struct i2c_client *lm75[2];
 280
 281         u8 in[9];               /* Register value */
 282         u8 in_max[9];           /* Register value */
 283         u8 in_min[9];           /* Register value */
 284         u8 low_bits[2];         /* Additional resolution to voltage in0-6 */
 285         u8 fan[7];              /* Register value */
 286         u8 fan_min[7];          /* Register value */
 287         u8 temp1[3];            /* current, over, thyst */
 288         u8 temp_add[2][6];      /* Register value */
 289         u8 fan_div[7];          /* Register encoding, shifted right */
 290         u8 pwm[7];              /* We only consider the first 3 set of pwm,
 291                                    although 792 chip has 7 set of pwm. */
 292         u8 pwmenable[3];
 293         u8 pwm_mode[7];         /* indicates PWM or DC mode: 1->PWM; 0->DC */
 294         u32 alarms;             /* realtime status register encoding,combined */
 295         u8 chassis;             /* Chassis status */
 296         u8 chassis_clear;       /* CLR_CHS, clear chassis intrusion detection */
 297         u8 thermal_cruise[3];   /* Smart FanI: Fan1,2,3 target value */
 298         u8 tolerance[3];        /* Fan1,2,3 tolerance(Smart Fan I/II) */
 299         u8 sf2_points[3][4];    /* Smart FanII: Fan1,2,3 temperature points */
 300         u8 sf2_levels[3][4];    /* Smart FanII: Fan1,2,3 duty cycle levels */
 301 };
 302
 303 static int w83792d_attach_adapter(struct i2c_adapter *adapter);
 304 static int w83792d_detect(struct i2c_adapter *adapter, int address, int kind);
 305 static int w83792d_detach_client(struct i2c_client *client);
 306
 307 static int w83792d_read_value(struct i2c_client *client, u8 register);
 308 static int w83792d_write_value(struct i2c_client *client, u8 register,
 309                                 u8 value);
 310 static struct w83792d_data *w83792d_update_device(struct device *dev);
 311
 312 #ifdef DEBUG
 313 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 314 #endif
 315
 316 static void w83792d_init_client(struct i2c_client *client);
 317
 318 static struct i2c_driver w83792d_driver = {
 319         .owner = THIS_MODULE,
 320         .name = "w83792d",
 321         .flags = I2C_DF_NOTIFY,
 322         .attach_adapter = w83792d_attach_adapter,
 323         .detach_client = w83792d_detach_client,
 324 };
 325
 326 static long in_count_from_reg(int nr, struct w83792d_data *data)
 327 {
 328         u16 vol_count = data->in[nr];
 329         u16 low_bits = 0;
 330         vol_count = (vol_count << 2);
 331         switch (nr)
 332         {
 333         case 0:  /* vin0 */
 334                 low_bits = (data->low_bits[0]) & 0x03;
 335                 break;
 336         case 1:  /* vin1 */
 337                 low_bits = ((data->low_bits[0]) & 0x0c) >> 2;
 338                 break;
 339         case 2:  /* vin2 */
 340                 low_bits = ((data->low_bits[0]) & 0x30) >> 4;
 341                 break;
 342         case 3:  /* vin3 */
 343                 low_bits = ((data->low_bits[0]) & 0xc0) >> 6;
 344                 break;
 345         case 4:  /* vin4 */
 346                 low_bits = (data->low_bits[1]) & 0x03;
 347                 break;
 348         case 5:  /* vin5 */
 349                 low_bits = ((data->low_bits[1]) & 0x0c) >> 2;
 350                 break;
 351         case 6:  /* vin6 */
 352                 low_bits = ((data->low_bits[1]) & 0x30) >> 4;
 353         default:
 354                 break;
 355         }
 356         vol_count = vol_count | low_bits;
 357         return vol_count;
 358 }
 359
 360 /* following are the sysfs callback functions */
 361 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 362                         char *buf)
 363 {
 364         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 365         int nr = sensor_attr->index;
 366         struct w83792d_data *data = w83792d_update_device(dev);
 367         return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
 368 }
 369
 370 #define show_in_reg(reg) \
 371 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 372                         char *buf) \
 373 { \
 374         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 375         int nr = sensor_attr->index; \
 376         struct w83792d_data *data = w83792d_update_device(dev); \
 377         return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
 378 }
 379
 380 show_in_reg(in_min);
 381 show_in_reg(in_max);
 382
 383 #define store_in_reg(REG, reg) \
 384 static ssize_t store_in_##reg (struct device *dev, \
 385                                 struct device_attribute *attr, \
 386                                 const char *buf, size_t count) \
 387 { \
 388         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 389         int nr = sensor_attr->index; \
 390         struct i2c_client *client = to_i2c_client(dev); \
 391         struct w83792d_data *data = i2c_get_clientdata(client); \
 392         u32 val; \
 393          \
 394         val = simple_strtoul(buf, NULL, 10); \
 395         data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
 396         w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
 397          \
 398         return count; \
 399 }
 400 store_in_reg(MIN, min);
 401 store_in_reg(MAX, max);
 402
 403 #define sysfs_in_reg(offset) \
 404 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
 405                                 NULL, offset); \
 406 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
 407                                 show_in_min, store_in_min, offset); \
 408 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
 409                                 show_in_max, store_in_max, offset);
 410
 411 sysfs_in_reg(0);
 412 sysfs_in_reg(1);
 413 sysfs_in_reg(2);
 414 sysfs_in_reg(3);
 415 sysfs_in_reg(4);
 416 sysfs_in_reg(5);
 417 sysfs_in_reg(6);
 418 sysfs_in_reg(7);
 419 sysfs_in_reg(8);
 420
 421 #define device_create_file_in(client, offset) \
 422 do { \
 423 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_input.dev_attr); \
 424 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_max.dev_attr); \
 425 device_create_file(&client->dev, &sensor_dev_attr_in##offset##_min.dev_attr); \
 426 } while (0)
 427
 428 #define show_fan_reg(reg) \
 429 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
 430                         char *buf) \
 431 { \
 432         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 433         int nr = sensor_attr->index - 1; \
 434         struct w83792d_data *data = w83792d_update_device(dev); \
 435         return sprintf(buf,"%d\n", \
 436                 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 437 }
 438
 439 show_fan_reg(fan);
 440 show_fan_reg(fan_min);
 441
 442 static ssize_t
 443 store_fan_min(struct device *dev, struct device_attribute *attr,
 444                 const char *buf, size_t count)
 445 {
 446         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 447         int nr = sensor_attr->index - 1;
 448         struct i2c_client *client = to_i2c_client(dev);
 449         struct w83792d_data *data = i2c_get_clientdata(client);
 450         u32 val;
 451
 452         val = simple_strtoul(buf, NULL, 10);
 453         data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 454         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
 455                                 data->fan_min[nr]);
 456
 457         return count;
 458 }
 459
 460 static ssize_t
 461 show_fan_div(struct device *dev, struct device_attribute *attr,
 462                 char *buf)
 463 {
 464         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 465         int nr = sensor_attr->index;
 466         struct w83792d_data *data = w83792d_update_device(dev);
 467         return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
 468 }
 469
 470 /* Note: we save and restore the fan minimum here, because its value is
 471    determined in part by the fan divisor.  This follows the principle of
 472    least suprise; the user doesn't expect the fan minimum to change just
 473    because the divisor changed. */
 474 static ssize_t
 475 store_fan_div(struct device *dev, struct device_attribute *attr,
 476                 const char *buf, size_t count)
 477 {
 478         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 479         int nr = sensor_attr->index - 1;
 480         struct i2c_client *client = to_i2c_client(dev);
 481         struct w83792d_data *data = i2c_get_clientdata(client);
 482         unsigned long min;
 483         /*u8 reg;*/
 484         u8 fan_div_reg = 0;
 485         u8 tmp_fan_div;
 486
 487         /* Save fan_min */
 488         min = FAN_FROM_REG(data->fan_min[nr],
 489                            DIV_FROM_REG(data->fan_div[nr]));
 490
 491         data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
 492
 493         fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
 494         fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
 495         tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
 496                                         : ((data->fan_div[nr]) & 0x07);
 497         w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
 498                                         fan_div_reg | tmp_fan_div);
 499
 500         /* Restore fan_min */
 501         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 502         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
 503
 504         return count;
 505 }
 506
 507 #define sysfs_fan(offset) \
 508 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
 509                                 offset); \
 510 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
 511                                 show_fan_div, store_fan_div, offset); \
 512 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
 513                                 show_fan_min, store_fan_min, offset);
 514
 515 sysfs_fan(1);
 516 sysfs_fan(2);
 517 sysfs_fan(3);
 518 sysfs_fan(4);
 519 sysfs_fan(5);
 520 sysfs_fan(6);
 521 sysfs_fan(7);
 522
 523 #define device_create_file_fan(client, offset) \
 524 do { \
 525 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_input.dev_attr); \
 526 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_div.dev_attr); \
 527 device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_min.dev_attr); \
 528 } while (0)
 529
 530
 531 /* read/write the temperature1, includes measured value and limits */
 532
 533 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
 534                                 char *buf)
 535 {
 536         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 537         int nr = sensor_attr->index;
 538         struct w83792d_data *data = w83792d_update_device(dev);
 539         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
 540 }
 541
 542 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 543                                 const char *buf, size_t count)
 544 {
 545         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 546         int nr = sensor_attr->index;
 547         struct i2c_client *client = to_i2c_client(dev);
 548         struct w83792d_data *data = i2c_get_clientdata(client);
 549         s32 val;
 550
 551         val = simple_strtol(buf, NULL, 10);
 552
 553         data->temp1[nr] = TEMP1_TO_REG(val);
 554         w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 555                 data->temp1[nr]);
 556
 557         return count;
 558 }
 559
 560
 561 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0);
 562 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1,
 563                                 store_temp1, 1);
 564 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1,
 565                                 store_temp1, 2);
 566
 567 #define device_create_file_temp1(client) \
 568 do { \
 569 device_create_file(&client->dev, &sensor_dev_attr_temp1_input.dev_attr); \
 570 device_create_file(&client->dev, &sensor_dev_attr_temp1_max.dev_attr); \
 571 device_create_file(&client->dev, &sensor_dev_attr_temp1_max_hyst.dev_attr); \
 572 } while (0)
 573
 574
 575 /* read/write the temperature2-3, includes measured value and limits */
 576
 577 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
 578                                 char *buf)
 579 {
 580         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 581         int nr = sensor_attr->nr;
 582         int index = sensor_attr->index;
 583         struct w83792d_data *data = w83792d_update_device(dev);
 584         return sprintf(buf,"%ld\n",
 585                 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
 586                         data->temp_add[nr][index+1]));
 587 }
 588
 589 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 590                                 const char *buf, size_t count)
 591 {
 592         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 593         int nr = sensor_attr->nr;
 594         int index = sensor_attr->index;
 595         struct i2c_client *client = to_i2c_client(dev);
 596         struct w83792d_data *data = i2c_get_clientdata(client);
 597         s32 val;
 598
 599         val = simple_strtol(buf, NULL, 10);
 600
 601         data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 602         data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 603         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 604                 data->temp_add[nr][index]);
 605         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 606                 data->temp_add[nr][index+1]);
 607
 608         return count;
 609 }
 610
 611 #define sysfs_temp23(name,idx) \
 612 static SENSOR_DEVICE_ATTR_2(name##_input, S_IRUGO, show_temp23, NULL, \
 613                                 idx, 0); \
 614 static SENSOR_DEVICE_ATTR_2(name##_max, S_IRUGO | S_IWUSR, \
 615                                 show_temp23, store_temp23, idx, 2); \
 616 static SENSOR_DEVICE_ATTR_2(name##_max_hyst, S_IRUGO | S_IWUSR, \
 617                                 show_temp23, store_temp23, idx, 4);
 618
 619 sysfs_temp23(temp2,0)
 620 sysfs_temp23(temp3,1)
 621
 622 #define device_create_file_temp_add(client, offset) \
 623 do { \
 624 device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_input.dev_attr); \
 625 device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_max.dev_attr); \
 626 device_create_file(&client->dev, \
 627 &sensor_dev_attr_temp##offset##_max_hyst.dev_attr); \
 628 } while (0)
 629
 630
 631 /* get reatime status of all sensors items: voltage, temp, fan */
 632 static ssize_t
 633 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
 634 {
 635         struct w83792d_data *data = w83792d_update_device(dev);
 636         return sprintf(buf, "%d\n", data->alarms);
 637 }
 638
 639 static
 640 DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
 641 #define device_create_file_alarms(client) \
 642 device_create_file(&client->dev, &dev_attr_alarms);
 643
 644
 645
 646 static ssize_t
 647 show_pwm(struct device *dev, struct device_attribute *attr,
 648                 char *buf)
 649 {
 650         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 651         int nr = sensor_attr->index;
 652         struct w83792d_data *data = w83792d_update_device(dev);
 653         return sprintf(buf, "%ld\n", (long) PWM_FROM_REG(data->pwm[nr-1]));
 654 }
 655
 656 static ssize_t
 657 show_pwmenable(struct device *dev, struct device_attribute *attr,
 658                         char *buf)
 659 {
 660         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 661         int nr = sensor_attr->index - 1;
 662         struct w83792d_data *data = w83792d_update_device(dev);
 663         long pwm_enable_tmp = 1;
 664
 665         switch (data->pwmenable[nr]) {
 666         case 0:
 667                 pwm_enable_tmp = 1; /* manual mode */
 668                 break;
 669         case 1:
 670                 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
 671                 break;
 672         case 2:
 673                 pwm_enable_tmp = 2; /* Smart Fan II */
 674                 break;
 675         }
 676
 677         return sprintf(buf, "%ld\n", pwm_enable_tmp);
 678 }
 679
 680 static ssize_t
 681 store_pwm(struct device *dev, struct device_attribute *attr,
 682                 const char *buf, size_t count)
 683 {
 684         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 685         int nr = sensor_attr->index - 1;
 686         struct i2c_client *client = to_i2c_client(dev);
 687         struct w83792d_data *data = i2c_get_clientdata(client);
 688         u32 val;
 689
 690         val = simple_strtoul(buf, NULL, 10);
 691         data->pwm[nr] = PWM_TO_REG(val);
 692         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 693
 694         return count;
 695 }
 696
 697 static ssize_t
 698 store_pwmenable(struct device *dev, struct device_attribute *attr,
 699                         const char *buf, size_t count)
 700 {
 701         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 702         int nr = sensor_attr->index - 1;
 703         struct i2c_client *client = to_i2c_client(dev);
 704         struct w83792d_data *data = i2c_get_clientdata(client);
 705         u32 val;
 706         u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 707
 708         val = simple_strtoul(buf, NULL, 10);
 709         switch (val) {
 710         case 1:
 711                 data->pwmenable[nr] = 0; /* manual mode */
 712                 break;
 713         case 2:
 714                 data->pwmenable[nr] = 2; /* Smart Fan II */
 715                 break;
 716         case 3:
 717                 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 718                 break;
 719         default:
 720                 return -EINVAL;
 721         }
 722         cfg1_tmp = data->pwmenable[0];
 723         cfg2_tmp = (data->pwmenable[1]) << 2;
 724         cfg3_tmp = (data->pwmenable[2]) << 4;
 725         cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
 726         fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 727         w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
 728
 729         return count;
 730 }
 731
 732 #define sysfs_pwm(offset) \
 733 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
 734                                 show_pwm, store_pwm, offset); \
 735 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
 736                                 show_pwmenable, store_pwmenable, offset); \
 737
 738 sysfs_pwm(1);
 739 sysfs_pwm(2);
 740 sysfs_pwm(3);
 741
 742
 743 #define device_create_file_pwm(client, offset) \
 744 do { \
 745 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset.dev_attr); \
 746 } while (0)
 747
 748 #define device_create_file_pwmenable(client, offset) \
 749 do { \
 750 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_enable.dev_attr); \
 751 } while (0)
 752
 753
 754 static ssize_t
 755 show_pwm_mode(struct device *dev, struct device_attribute *attr,
 756                         char *buf)
 757 {
 758         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 759         int nr = sensor_attr->index;
 760         struct w83792d_data *data = w83792d_update_device(dev);
 761         return sprintf(buf, "%d\n", data->pwm_mode[nr-1]);
 762 }
 763
 764 static ssize_t
 765 store_pwm_mode(struct device *dev, struct device_attribute *attr,
 766                         const char *buf, size_t count)
 767 {
 768         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 769         int nr = sensor_attr->index - 1;
 770         struct i2c_client *client = to_i2c_client(dev);
 771         struct w83792d_data *data = i2c_get_clientdata(client);
 772         u32 val;
 773         u8 pwm_mode_mask = 0;
 774
 775         val = simple_strtoul(buf, NULL, 10);
 776         data->pwm_mode[nr] = SENSORS_LIMIT(val, 0, 1);
 777         pwm_mode_mask = w83792d_read_value(client,
 778                 W83792D_REG_PWM[nr]) & 0x7f;
 779         w83792d_write_value(client, W83792D_REG_PWM[nr],
 780                 ((data->pwm_mode[nr]) << 7) | pwm_mode_mask);
 781
 782         return count;
 783 }
 784
 785 #define sysfs_pwm_mode(offset) \
 786 static SENSOR_DEVICE_ATTR(pwm##offset##_mode, S_IRUGO | S_IWUSR, \
 787                                 show_pwm_mode, store_pwm_mode, offset);
 788
 789 sysfs_pwm_mode(1);
 790 sysfs_pwm_mode(2);
 791 sysfs_pwm_mode(3);
 792
 793 #define device_create_file_pwm_mode(client, offset) \
 794 do { \
 795 device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_mode.dev_attr); \
 796 } while (0)
 797
 798
 799 static ssize_t
 800 show_regs_chassis(struct device *dev, struct device_attribute *attr,
 801                         char *buf)
 802 {
 803         struct w83792d_data *data = w83792d_update_device(dev);
 804         return sprintf(buf, "%d\n", data->chassis);
 805 }
 806
 807 static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
 808
 809 #define device_create_file_chassis(client) \
 810 do { \
 811 device_create_file(&client->dev, &dev_attr_chassis); \
 812 } while (0)
 813
 814
 815 static ssize_t
 816 show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
 817 {
 818         struct w83792d_data *data = w83792d_update_device(dev);
 819         return sprintf(buf, "%d\n", data->chassis_clear);
 820 }
 821
 822 static ssize_t
 823 store_chassis_clear(struct device *dev, struct device_attribute *attr,
 824                         const char *buf, size_t count)
 825 {
 826         struct i2c_client *client = to_i2c_client(dev);
 827         struct w83792d_data *data = i2c_get_clientdata(client);
 828         u32 val;
 829         u8 temp1 = 0, temp2 = 0;
 830
 831         val = simple_strtoul(buf, NULL, 10);
 832
 833         data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
 834         temp1 = ((data->chassis_clear) << 7) & 0x80;
 835         temp2 = w83792d_read_value(client,
 836                 W83792D_REG_CHASSIS_CLR) & 0x7f;
 837         w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
 838
 839         return count;
 840 }
 841
 842 static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
 843                 show_chassis_clear, store_chassis_clear);
 844
 845 #define device_create_file_chassis_clear(client) \
 846 do { \
 847 device_create_file(&client->dev, &dev_attr_chassis_clear); \
 848 } while (0)
 849
 850
 851
 852 /* For Smart Fan I / Thermal Cruise */
 853 static ssize_t
 854 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 855                         char *buf)
 856 {
 857         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 858         int nr = sensor_attr->index;
 859         struct w83792d_data *data = w83792d_update_device(dev);
 860         return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 861 }
 862
 863 static ssize_t
 864 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 865                         const char *buf, size_t count)
 866 {
 867         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 868         int nr = sensor_attr->index - 1;
 869         struct i2c_client *client = to_i2c_client(dev);
 870         struct w83792d_data *data = i2c_get_clientdata(client);
 871         u32 val;
 872         u8 target_tmp=0, target_mask=0;
 873
 874         val = simple_strtoul(buf, NULL, 10);
 875         target_tmp = val;
 876         target_tmp = target_tmp & 0x7f;
 877         target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
 878         data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
 879         w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 880                 (data->thermal_cruise[nr]) | target_mask);
 881
 882         return count;
 883 }
 884
 885 #define sysfs_thermal_cruise(offset) \
 886 static SENSOR_DEVICE_ATTR(thermal_cruise##offset, S_IRUGO | S_IWUSR, \
 887                         show_thermal_cruise, store_thermal_cruise, offset);
 888
 889 sysfs_thermal_cruise(1);
 890 sysfs_thermal_cruise(2);
 891 sysfs_thermal_cruise(3);
 892
 893 #define device_create_file_thermal_cruise(client, offset) \
 894 do { \
 895 device_create_file(&client->dev, \
 896 &sensor_dev_attr_thermal_cruise##offset.dev_attr); \
 897 } while (0)
 898
 899
 900 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
 901 static ssize_t
 902 show_tolerance(struct device *dev, struct device_attribute *attr,
 903                 char *buf)
 904 {
 905         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 906         int nr = sensor_attr->index;
 907         struct w83792d_data *data = w83792d_update_device(dev);
 908         return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 909 }
 910
 911 static ssize_t
 912 store_tolerance(struct device *dev, struct device_attribute *attr,
 913                 const char *buf, size_t count)
 914 {
 915         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 916         int nr = sensor_attr->index - 1;
 917         struct i2c_client *client = to_i2c_client(dev);
 918         struct w83792d_data *data = i2c_get_clientdata(client);
 919         u32 val;
 920         u8 tol_tmp, tol_mask;
 921
 922         val = simple_strtoul(buf, NULL, 10);
 923         tol_mask = w83792d_read_value(client,
 924                 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 925         tol_tmp = SENSORS_LIMIT(val, 0, 15);
 926         tol_tmp &= 0x0f;
 927         data->tolerance[nr] = tol_tmp;
 928         if (nr == 1) {
 929                 tol_tmp <<= 4;
 930         }
 931         w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 932                 tol_mask | tol_tmp);
 933
 934         return count;
 935 }
 936
 937 #define sysfs_tolerance(offset) \
 938 static SENSOR_DEVICE_ATTR(tolerance##offset, S_IRUGO | S_IWUSR, \
 939                                 show_tolerance, store_tolerance, offset);
 940
 941 sysfs_tolerance(1);
 942 sysfs_tolerance(2);
 943 sysfs_tolerance(3);
 944
 945 #define device_create_file_tolerance(client, offset) \
 946 do { \
 947 device_create_file(&client->dev, &sensor_dev_attr_tolerance##offset.dev_attr); \
 948 } while (0)
 949
 950
 951 /* For Smart Fan II */
 952 static ssize_t
 953 show_sf2_point(struct device *dev, struct device_attribute *attr,
 954                 char *buf)
 955 {
 956         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 957         int nr = sensor_attr->nr;
 958         int index = sensor_attr->index;
 959         struct w83792d_data *data = w83792d_update_device(dev);
 960         return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 961 }
 962
 963 static ssize_t
 964 store_sf2_point(struct device *dev, struct device_attribute *attr,
 965                 const char *buf, size_t count)
 966 {
 967         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 968         int nr = sensor_attr->nr - 1;
 969         int index = sensor_attr->index - 1;
 970         struct i2c_client *client = to_i2c_client(dev);
 971         struct w83792d_data *data = i2c_get_clientdata(client);
 972         u32 val;
 973         u8 mask_tmp = 0;
 974
 975         val = simple_strtoul(buf, NULL, 10);
 976         data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
 977         mask_tmp = w83792d_read_value(client,
 978                                         W83792D_REG_POINTS[index][nr]) & 0x80;
 979         w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 980                 mask_tmp|data->sf2_points[index][nr]);
 981
 982         return count;
 983 }
 984
 985 #define sysfs_sf2_point(offset, index) \
 986 static SENSOR_DEVICE_ATTR_2(sf2_point##offset##_fan##index, S_IRUGO | S_IWUSR, \
 987                                 show_sf2_point, store_sf2_point, offset, index);
 988
 989 sysfs_sf2_point(1, 1);  /* Fan1 */
 990 sysfs_sf2_point(2, 1);  /* Fan1 */
 991 sysfs_sf2_point(3, 1);  /* Fan1 */
 992 sysfs_sf2_point(4, 1);  /* Fan1 */
 993 sysfs_sf2_point(1, 2);  /* Fan2 */
 994 sysfs_sf2_point(2, 2);  /* Fan2 */
 995 sysfs_sf2_point(3, 2);  /* Fan2 */
 996 sysfs_sf2_point(4, 2);  /* Fan2 */
 997 sysfs_sf2_point(1, 3);  /* Fan3 */
 998 sysfs_sf2_point(2, 3);  /* Fan3 */
 999 sysfs_sf2_point(3, 3);  /* Fan3 */
1000 sysfs_sf2_point(4, 3);  /* Fan3 */
1001
1002 #define device_create_file_sf2_point(client, offset, index) \
1003 do { \
1004 device_create_file(&client->dev, \
1005 &sensor_dev_attr_sf2_point##offset##_fan##index.dev_attr); \
1006 } while (0)
1007
1008
1009 static ssize_t
1010 show_sf2_level(struct device *dev, struct device_attribute *attr,
1011                 char *buf)
1012 {
1013         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
1014         int nr = sensor_attr->nr;
1015         int index = sensor_attr->index;
1016         struct w83792d_data *data = w83792d_update_device(dev);
1017         return sprintf(buf, "%d\n",
1018                         (((data->sf2_levels[index-1][nr]) * 100) / 15));
1019 }
1020
1021 static ssize_t
1022 store_sf2_level(struct device *dev, struct device_attribute *attr,
1023                 const char *buf, size_t count)
1024 {
1025         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
1026         int nr = sensor_attr->nr;
1027         int index = sensor_attr->index - 1;
1028         struct i2c_client *client = to_i2c_client(dev);
1029         struct w83792d_data *data = i2c_get_clientdata(client);
1030         u32 val;
1031         u8 mask_tmp=0, level_tmp=0;
1032
1033         val = simple_strtoul(buf, NULL, 10);
1034         data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
1035         mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
1036                 & ((nr==3) ? 0xf0 : 0x0f);
1037         if (nr==3) {
1038                 level_tmp = data->sf2_levels[index][nr];
1039         } else {
1040                 level_tmp = data->sf2_levels[index][nr] << 4;
1041         }
1042         w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
1043
1044         return count;
1045 }
1046
1047 #define sysfs_sf2_level(offset, index) \
1048 static SENSOR_DEVICE_ATTR_2(sf2_level##offset##_fan##index, S_IRUGO | S_IWUSR, \
1049                                 show_sf2_level, store_sf2_level, offset, index);
1050
1051 sysfs_sf2_level(1, 1);  /* Fan1 */
1052 sysfs_sf2_level(2, 1);  /* Fan1 */
1053 sysfs_sf2_level(3, 1);  /* Fan1 */
1054 sysfs_sf2_level(1, 2);  /* Fan2 */
1055 sysfs_sf2_level(2, 2);  /* Fan2 */
1056 sysfs_sf2_level(3, 2);  /* Fan2 */
1057 sysfs_sf2_level(1, 3);  /* Fan3 */
1058 sysfs_sf2_level(2, 3);  /* Fan3 */
1059 sysfs_sf2_level(3, 3);  /* Fan3 */
1060
1061 #define device_create_file_sf2_level(client, offset, index) \
1062 do { \
1063 device_create_file(&client->dev, \
1064 &sensor_dev_attr_sf2_level##offset##_fan##index.dev_attr); \
1065 } while (0)
1066
1067
1068 /* This function is called when:
1069      * w83792d_driver is inserted (when this module is loaded), for each
1070        available adapter
1071      * when a new adapter is inserted (and w83792d_driver is still present) */
1072 static int
1073 w83792d_attach_adapter(struct i2c_adapter *adapter)
1074 {
1075         if (!(adapter->class & I2C_CLASS_HWMON))
1076                 return 0;
1077         return i2c_probe(adapter, &addr_data, w83792d_detect);
1078 }
1079
1080
1081 static int
1082 w83792d_create_subclient(struct i2c_adapter *adapter,
1083                                 struct i2c_client *new_client, int addr,
1084                                 struct i2c_client **sub_cli)
1085 {
1086         int err;
1087         struct i2c_client *sub_client;
1088
1089         (*sub_cli) = sub_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
1090         if (!(sub_client)) {
1091                 return -ENOMEM;
1092         }
1093         sub_client->addr = 0x48 + addr;
1094         i2c_set_clientdata(sub_client, NULL);
1095         sub_client->adapter = adapter;
1096         sub_client->driver = &w83792d_driver;
1097         sub_client->flags = 0;
1098         strlcpy(sub_client->name, "w83792d subclient", I2C_NAME_SIZE);
1099         if ((err = i2c_attach_client(sub_client))) {
1100                 dev_err(&new_client->dev, "subclient registration "
1101                         "at address 0x%x failed\n", sub_client->addr);
1102                 kfree(sub_client);
1103                 return err;
1104         }
1105         return 0;
1106 }
1107
1108
1109 static int
1110 w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
1111                 struct i2c_client *new_client)
1112 {
1113         int i, id, err;
1114         u8 val;
1115         struct w83792d_data *data = i2c_get_clientdata(new_client);
1116
1117         id = i2c_adapter_id(adapter);
1118         if (force_subclients[0] == id && force_subclients[1] == address) {
1119                 for (i = 2; i <= 3; i++) {
1120                         if (force_subclients[i] < 0x48 ||
1121                             force_subclients[i] > 0x4f) {
1122                                 dev_err(&new_client->dev, "invalid subclient "
1123                                         "address %d; must be 0x48-0x4f\n",
1124                                         force_subclients[i]);
1125                                 err = -ENODEV;
1126                                 goto ERROR_SC_0;
1127                         }
1128                 }
1129                 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
1130                                         (force_subclients[2] & 0x07) |
1131                                         ((force_subclients[3] & 0x07) << 4));
1132         }
1133
1134         val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
1135         if (!(val & 0x08)) {
1136                 err = w83792d_create_subclient(adapter, new_client, val & 0x7,
1137                                                 &data->lm75[0]);
1138                 if (err < 0)
1139                         goto ERROR_SC_0;
1140         }
1141         if (!(val & 0x80)) {
1142                 if ((data->lm75[0] != NULL) &&
1143                         ((val & 0x7) == ((val >> 4) & 0x7))) {
1144                         dev_err(&new_client->dev, "duplicate addresses 0x%x, "
1145                                 "use force_subclient\n", data->lm75[0]->addr);
1146                         err = -ENODEV;
1147                         goto ERROR_SC_1;
1148                 }
1149                 err = w83792d_create_subclient(adapter, new_client,
1150                                                 (val >> 4) & 0x7, &data->lm75[1]);
1151                 if (err < 0)
1152                         goto ERROR_SC_1;
1153         }
1154
1155         return 0;
1156
1157 /* Undo inits in case of errors */
1158
1159 ERROR_SC_1:
1160         if (data->lm75[0] != NULL) {
1161                 i2c_detach_client(data->lm75[0]);
1162                 kfree(data->lm75[0]);
1163         }
1164 ERROR_SC_0:
1165         return err;
1166 }
1167
1168
1169 static int
1170 w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
1171 {
1172         int i = 0, val1 = 0, val2;
1173         struct i2c_client *new_client;
1174         struct w83792d_data *data;
1175         int err = 0;
1176         const char *client_name = "";
1177
1178         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1179                 goto ERROR0;
1180         }
1181
1182         /* OK. For now, we presume we have a valid client. We now create the
1183            client structure, even though we cannot fill it completely yet.
1184            But it allows us to access w83792d_{read,write}_value. */
1185
1186         if (!(data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
1187                 err = -ENOMEM;
1188                 goto ERROR0;
1189         }
1190
1191         new_client = &data->client;
1192         i2c_set_clientdata(new_client, data);
1193         new_client->addr = address;
1194         init_MUTEX(&data->lock);
1195         new_client->adapter = adapter;
1196         new_client->driver = &w83792d_driver;
1197         new_client->flags = 0;
1198
1199         /* Now, we do the remaining detection. */
1200
1201         /* The w83792d may be stuck in some other bank than bank 0. This may
1202            make reading other information impossible. Specify a force=... or
1203            force_*=... parameter, and the Winbond will be reset to the right
1204            bank. */
1205         if (kind < 0) {
1206                 if (w83792d_read_value(new_client, W83792D_REG_CONFIG) & 0x80) {
1207                         dev_warn(&new_client->dev, "Detection failed at step "
1208                                 "3\n");
1209                         goto ERROR1;
1210                 }
1211                 val1 = w83792d_read_value(new_client, W83792D_REG_BANK);
1212                 val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
1213                 /* Check for Winbond ID if in bank 0 */
1214                 if (!(val1 & 0x07)) {  /* is Bank0 */
1215                         if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
1216                              ((val1 & 0x80) && (val2 != 0x5c))) {
1217                                 goto ERROR1;
1218                         }
1219                 }
1220                 /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1221                    should match */
1222                 if (w83792d_read_value(new_client,
1223                                         W83792D_REG_I2C_ADDR) != address) {
1224                         dev_warn(&new_client->dev, "Detection failed "
1225                                 "at step 5\n");
1226                         goto ERROR1;
1227                 }
1228         }
1229
1230         /* We have either had a force parameter, or we have already detected the
1231            Winbond. Put it now into bank 0 and Vendor ID High Byte */
1232         w83792d_write_value(new_client,
1233                             W83792D_REG_BANK,
1234                             (w83792d_read_value(new_client,
1235                                 W83792D_REG_BANK) & 0x78) | 0x80);
1236
1237         /* Determine the chip type. */
1238         if (kind <= 0) {
1239                 /* get vendor ID */
1240                 val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
1241                 if (val2 != 0x5c) {  /* the vendor is NOT Winbond */
1242                         goto ERROR1;
1243                 }
1244                 val1 = w83792d_read_value(new_client, W83792D_REG_WCHIPID);
1245                 if (val1 == 0x7a && address >= 0x2c) {
1246                         kind = w83792d;
1247                 } else {
1248                         if (kind == 0)
1249                                         dev_warn(&new_client->dev,
1250                                         "w83792d: Ignoring 'force' parameter for"
1251                                         " unknown chip at adapter %d, address"
1252                                         " 0x%02x\n", i2c_adapter_id(adapter),
1253                                         address);
1254                         goto ERROR1;
1255                 }
1256         }
1257
1258         if (kind == w83792d) {
1259                 client_name = "w83792d";
1260         } else {
1261                 dev_err(&new_client->dev, "w83792d: Internal error: unknown"
1262                                           " kind (%d)?!?", kind);
1263                 goto ERROR1;
1264         }
1265
1266         /* Fill in the remaining client fields and put into the global list */
1267         strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
1268         data->type = kind;
1269
1270         data->valid = 0;
1271         init_MUTEX(&data->update_lock);
1272
1273         /* Tell the I2C layer a new client has arrived */
1274         if ((err = i2c_attach_client(new_client)))
1275                 goto ERROR1;
1276
1277         if ((err = w83792d_detect_subclients(adapter, address,
1278                         kind, new_client)))
1279                 goto ERROR2;
1280
1281         /* Initialize the chip */
1282         w83792d_init_client(new_client);
1283
1284         /* A few vars need to be filled upon startup */
1285         for (i = 1; i <= 7; i++) {
1286                 data->fan_min[i - 1] = w83792d_read_value(new_client,
1287                                         W83792D_REG_FAN_MIN[i]);
1288         }
1289
1290         /* Register sysfs hooks */
1291         data->class_dev = hwmon_device_register(&new_client->dev);
1292         if (IS_ERR(data->class_dev)) {
1293                 err = PTR_ERR(data->class_dev);
1294                 goto ERROR3;
1295         }
1296         device_create_file_in(new_client, 0);
1297         device_create_file_in(new_client, 1);
1298         device_create_file_in(new_client, 2);
1299         device_create_file_in(new_client, 3);
1300         device_create_file_in(new_client, 4);
1301         device_create_file_in(new_client, 5);
1302         device_create_file_in(new_client, 6);
1303         device_create_file_in(new_client, 7);
1304         device_create_file_in(new_client, 8);
1305
1306         device_create_file_fan(new_client, 1);
1307         device_create_file_fan(new_client, 2);
1308         device_create_file_fan(new_client, 3);
1309         device_create_file_fan(new_client, 4);
1310         device_create_file_fan(new_client, 5);
1311         device_create_file_fan(new_client, 6);
1312         device_create_file_fan(new_client, 7);
1313
1314         device_create_file_temp1(new_client);           /* Temp1 */
1315         device_create_file_temp_add(new_client, 2);     /* Temp2 */
1316         device_create_file_temp_add(new_client, 3);     /* Temp3 */
1317
1318         device_create_file_alarms(new_client);
1319
1320         device_create_file_pwm(new_client, 1);
1321         device_create_file_pwm(new_client, 2);
1322         device_create_file_pwm(new_client, 3);
1323
1324         device_create_file_pwmenable(new_client, 1);
1325         device_create_file_pwmenable(new_client, 2);
1326         device_create_file_pwmenable(new_client, 3);
1327
1328         device_create_file_pwm_mode(new_client, 1);
1329         device_create_file_pwm_mode(new_client, 2);
1330         device_create_file_pwm_mode(new_client, 3);
1331
1332         device_create_file_chassis(new_client);
1333         device_create_file_chassis_clear(new_client);
1334
1335         device_create_file_thermal_cruise(new_client, 1);
1336         device_create_file_thermal_cruise(new_client, 2);
1337         device_create_file_thermal_cruise(new_client, 3);
1338
1339         device_create_file_tolerance(new_client, 1);
1340         device_create_file_tolerance(new_client, 2);
1341         device_create_file_tolerance(new_client, 3);
1342
1343         device_create_file_sf2_point(new_client, 1, 1); /* Fan1 */
1344         device_create_file_sf2_point(new_client, 2, 1); /* Fan1 */
1345         device_create_file_sf2_point(new_client, 3, 1); /* Fan1 */
1346         device_create_file_sf2_point(new_client, 4, 1); /* Fan1 */
1347         device_create_file_sf2_point(new_client, 1, 2); /* Fan2 */
1348         device_create_file_sf2_point(new_client, 2, 2); /* Fan2 */
1349         device_create_file_sf2_point(new_client, 3, 2); /* Fan2 */
1350         device_create_file_sf2_point(new_client, 4, 2); /* Fan2 */
1351         device_create_file_sf2_point(new_client, 1, 3); /* Fan3 */
1352         device_create_file_sf2_point(new_client, 2, 3); /* Fan3 */
1353         device_create_file_sf2_point(new_client, 3, 3); /* Fan3 */
1354         device_create_file_sf2_point(new_client, 4, 3); /* Fan3 */
1355
1356         device_create_file_sf2_level(new_client, 1, 1); /* Fan1 */
1357         device_create_file_sf2_level(new_client, 2, 1); /* Fan1 */
1358         device_create_file_sf2_level(new_client, 3, 1); /* Fan1 */
1359         device_create_file_sf2_level(new_client, 1, 2); /* Fan2 */
1360         device_create_file_sf2_level(new_client, 2, 2); /* Fan2 */
1361         device_create_file_sf2_level(new_client, 3, 2); /* Fan2 */
1362         device_create_file_sf2_level(new_client, 1, 3); /* Fan3 */
1363         device_create_file_sf2_level(new_client, 2, 3); /* Fan3 */
1364         device_create_file_sf2_level(new_client, 3, 3); /* Fan3 */
1365
1366         return 0;
1367
1368 ERROR3:
1369         if (data->lm75[0] != NULL) {
1370                 i2c_detach_client(data->lm75[0]);
1371                 kfree(data->lm75[0]);
1372         }
1373         if (data->lm75[1] != NULL) {
1374                 i2c_detach_client(data->lm75[1]);
1375                 kfree(data->lm75[1]);
1376         }
1377 ERROR2:
1378         i2c_detach_client(new_client);
1379 ERROR1:
1380         kfree(data);
1381 ERROR0:
1382         return err;
1383 }
1384
1385 static int
1386 w83792d_detach_client(struct i2c_client *client)
1387 {
1388         struct w83792d_data *data = i2c_get_clientdata(client);
1389         int err;
1390
1391         /* main client */
1392         if (data)
1393                 hwmon_device_unregister(data->class_dev);
1394
1395         if ((err = i2c_detach_client(client)))
1396                 return err;
1397
1398         /* main client */
1399         if (data)
1400                 kfree(data);
1401         /* subclient */
1402         else
1403                 kfree(client);
1404
1405         return 0;
1406 }
1407
1408 /* The SMBus locks itself, usually, but nothing may access the Winbond between
1409    bank switches. ISA access must always be locked explicitly!
1410    We ignore the W83792D BUSY flag at this moment - it could lead to deadlocks,
1411    would slow down the W83792D access and should not be necessary.
1412    There are some ugly typecasts here, but the good news is - they should
1413    nowhere else be necessary! */
1414 static int
1415 w83792d_read_value(struct i2c_client *client, u8 reg)
1416 {
1417         int res=0;
1418         res = i2c_smbus_read_byte_data(client, reg);
1419
1420         return res;
1421 }
1422
1423 static int
1424 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
1425 {
1426         i2c_smbus_write_byte_data(client, reg,  value);
1427         return 0;
1428 }
1429
1430 static void
1431 w83792d_init_client(struct i2c_client *client)
1432 {
1433         u8 temp2_cfg, temp3_cfg, vid_in_b;
1434
1435         if (init) {
1436                 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1437         }
1438         /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1439            W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1440              vin0/vin1 can be modified by user;
1441            W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1442              vin0/vin1 auto-updated, can NOT be modified by user. */
1443         vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1444         w83792d_write_value(client, W83792D_REG_VID_IN_B,
1445                             vid_in_b & 0xbf);
1446
1447         temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1448         temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1449         w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1450                                 temp2_cfg & 0xe6);
1451         w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1452                                 temp3_cfg & 0xe6);
1453
1454         /* Start monitoring */
1455         w83792d_write_value(client, W83792D_REG_CONFIG,
1456                             (w83792d_read_value(client,
1457                                                 W83792D_REG_CONFIG) & 0xf7)
1458                             | 0x01);
1459 }
1460
1461 static struct w83792d_data *w83792d_update_device(struct device *dev)
1462 {
1463         struct i2c_client *client = to_i2c_client(dev);
1464         struct w83792d_data *data = i2c_get_clientdata(client);
1465         int i, j;
1466         u8 reg_array_tmp[4], pwm_array_tmp[7], reg_tmp;
1467
1468         down(&data->update_lock);
1469
1470         if (time_after
1471             (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1472             || time_before(jiffies, data->last_updated) || !data->valid) {
1473                 dev_dbg(dev, "Starting device update\n");
1474
1475                 /* Update the voltages measured value and limits */
1476                 for (i = 0; i < 9; i++) {
1477                         data->in[i] = w83792d_read_value(client,
1478                                                 W83792D_REG_IN[i]);
1479                         data->in_max[i] = w83792d_read_value(client,
1480                                                 W83792D_REG_IN_MAX[i]);
1481                         data->in_min[i] = w83792d_read_value(client,
1482                                                 W83792D_REG_IN_MIN[i]);
1483                 }
1484                 data->low_bits[0] = w83792d_read_value(client,
1485                                                 W83792D_REG_LOW_BITS1);
1486                 data->low_bits[1] = w83792d_read_value(client,
1487                                                 W83792D_REG_LOW_BITS2);
1488                 for (i = 0; i < 7; i++) {
1489                         /* Update the Fan measured value and limits */
1490                         data->fan[i] = w83792d_read_value(client,
1491                                                 W83792D_REG_FAN[i]);
1492                         data->fan_min[i] = w83792d_read_value(client,
1493                                                 W83792D_REG_FAN_MIN[i]);
1494                         /* Update the PWM/DC Value and PWM/DC flag */
1495                         pwm_array_tmp[i] = w83792d_read_value(client,
1496                                                 W83792D_REG_PWM[i]);
1497                         data->pwm[i] = pwm_array_tmp[i] & 0x0f;
1498                         data->pwm_mode[i] = (pwm_array_tmp[i] >> 7) & 0x01;
1499                 }
1500
1501                 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1502                 data->pwmenable[0] = reg_tmp & 0x03;
1503                 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1504                 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1505
1506                 for (i = 0; i < 3; i++) {
1507                         data->temp1[i] = w83792d_read_value(client,
1508                                                         W83792D_REG_TEMP1[i]);
1509                 }
1510                 for (i = 0; i < 2; i++) {
1511                         for (j = 0; j < 6; j++) {
1512                                 data->temp_add[i][j] = w83792d_read_value(
1513                                         client,W83792D_REG_TEMP_ADD[i][j]);
1514                         }
1515                 }
1516
1517                 /* Update the Fan Divisor */
1518                 for (i = 0; i < 4; i++) {
1519                         reg_array_tmp[i] = w83792d_read_value(client,
1520                                                         W83792D_REG_FAN_DIV[i]);
1521                 }
1522                 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1523                 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1524                 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1525                 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1526                 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1527                 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1528                 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1529
1530                 /* Update the realtime status */
1531                 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1532                         (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1533                         (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1534
1535                 /* Update CaseOpen status and it's CLR_CHS. */
1536                 data->chassis = (w83792d_read_value(client,
1537                         W83792D_REG_CHASSIS) >> 5) & 0x01;
1538                 data->chassis_clear = (w83792d_read_value(client,
1539                         W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
1540
1541                 /* Update Thermal Cruise/Smart Fan I target value */
1542                 for (i = 0; i < 3; i++) {
1543                         data->thermal_cruise[i] =
1544                                 w83792d_read_value(client,
1545                                 W83792D_REG_THERMAL[i]) & 0x7f;
1546                 }
1547
1548                 /* Update Smart Fan I/II tolerance */
1549                 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1550                 data->tolerance[0] = reg_tmp & 0x0f;
1551                 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1552                 data->tolerance[2] = w83792d_read_value(client,
1553                                         W83792D_REG_TOLERANCE[2]) & 0x0f;
1554
1555                 /* Update Smart Fan II temperature points */
1556                 for (i = 0; i < 3; i++) {
1557                         for (j = 0; j < 4; j++) {
1558                                 data->sf2_points[i][j] = w83792d_read_value(
1559                                         client,W83792D_REG_POINTS[i][j]) & 0x7f;
1560                         }
1561                 }
1562
1563                 /* Update Smart Fan II duty cycle levels */
1564                 for (i = 0; i < 3; i++) {
1565                         reg_tmp = w83792d_read_value(client,
1566                                                 W83792D_REG_LEVELS[i][0]);
1567                         data->sf2_levels[i][0] = reg_tmp & 0x0f;
1568                         data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1569                         reg_tmp = w83792d_read_value(client,
1570                                                 W83792D_REG_LEVELS[i][2]);
1571                         data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1572                         data->sf2_levels[i][3] = reg_tmp & 0x0f;
1573                 }
1574
1575                 data->last_updated = jiffies;
1576                 data->valid = 1;
1577         }
1578
1579         up(&data->update_lock);
1580
1581 #ifdef DEBUG
1582         w83792d_print_debug(data, dev);
1583 #endif
1584
1585         return data;
1586 }
1587
1588 #ifdef DEBUG
1589 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1590 {
1591         int i=0, j=0;
1592         dev_dbg(dev, "==========The following is the debug message...========\n");
1593         dev_dbg(dev, "9 set of Voltages: =====>\n");
1594         for (i=0; i<9; i++) {
1595                 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1596                 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1597                 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1598         }
1599         dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits[0]);
1600         dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits[1]);
1601         dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1602         for (i=0; i<7; i++) {
1603                 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1604                 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1605                 dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1606                 dev_dbg(dev, "pwm_mode[%d] is: 0x%x\n", i, data->pwm_mode[i]);
1607         }
1608         dev_dbg(dev, "3 set of Temperatures: =====>\n");
1609         for (i=0; i<3; i++) {
1610                 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1611         }
1612
1613         for (i=0; i<2; i++) {
1614                 for (j=0; j<6; j++) {
1615                         dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1616                                                         data->temp_add[i][j]);
1617                 }
1618         }
1619
1620         for (i=0; i<7; i++) {
1621                 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1622         }
1623         dev_dbg(dev, "==========End of the debug message...==================\n");
1624         dev_dbg(dev, "\n");
1625 }
1626 #endif
1627
1628 static int __init
1629 sensors_w83792d_init(void)
1630 {
1631         return i2c_add_driver(&w83792d_driver);
1632 }
1633
1634 static void __exit
1635 sensors_w83792d_exit(void)
1636 {
1637         i2c_del_driver(&w83792d_driver);
1638 }
1639
1640 MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
1641 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1642 MODULE_LICENSE("GPL");
1643
1644 module_init(sensors_w83792d_init);
1645 module_exit(sensors_w83792d_exit);
1646