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 const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
  50                                                 I2C_CLIENT_END };
  51
  52 /* Insmod parameters */
  53 I2C_CLIENT_INSMOD_1(w83792d);
  54
  55 static unsigned short force_subclients[4];
  56 module_param_array(force_subclients, short, NULL, 0);
  57 MODULE_PARM_DESC(force_subclients, "List of subclient addresses: "
  58                         "{bus, clientaddr, subclientaddr1, subclientaddr2}");
  59
  60 static int init;
  61 module_param(init, bool, 0);
  62 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
  63
  64 /* The W83792D registers */
  65 static const u8 W83792D_REG_IN[9] = {
  66         0x20,   /* Vcore A in DataSheet */
  67         0x21,   /* Vcore B in DataSheet */
  68         0x22,   /* VIN0 in DataSheet */
  69         0x23,   /* VIN1 in DataSheet */
  70         0x24,   /* VIN2 in DataSheet */
  71         0x25,   /* VIN3 in DataSheet */
  72         0x26,   /* 5VCC in DataSheet */
  73         0xB0,   /* 5VSB in DataSheet */
  74         0xB1    /* VBAT in DataSheet */
  75 };
  76 #define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
  77 #define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
  78 static const u8 W83792D_REG_IN_MAX[9] = {
  79         0x2B,   /* Vcore A High Limit in DataSheet */
  80         0x2D,   /* Vcore B High Limit in DataSheet */
  81         0x2F,   /* VIN0 High Limit in DataSheet */
  82         0x31,   /* VIN1 High Limit in DataSheet */
  83         0x33,   /* VIN2 High Limit in DataSheet */
  84         0x35,   /* VIN3 High Limit in DataSheet */
  85         0x37,   /* 5VCC High Limit in DataSheet */
  86         0xB4,   /* 5VSB High Limit in DataSheet */
  87         0xB6    /* VBAT High Limit in DataSheet */
  88 };
  89 static const u8 W83792D_REG_IN_MIN[9] = {
  90         0x2C,   /* Vcore A Low Limit in DataSheet */
  91         0x2E,   /* Vcore B Low Limit in DataSheet */
  92         0x30,   /* VIN0 Low Limit in DataSheet */
  93         0x32,   /* VIN1 Low Limit in DataSheet */
  94         0x34,   /* VIN2 Low Limit in DataSheet */
  95         0x36,   /* VIN3 Low Limit in DataSheet */
  96         0x38,   /* 5VCC Low Limit in DataSheet */
  97         0xB5,   /* 5VSB Low Limit in DataSheet */
  98         0xB7    /* VBAT Low Limit in DataSheet */
  99 };
 100 static const u8 W83792D_REG_FAN[7] = {
 101         0x28,   /* FAN 1 Count in DataSheet */
 102         0x29,   /* FAN 2 Count in DataSheet */
 103         0x2A,   /* FAN 3 Count in DataSheet */
 104         0xB8,   /* FAN 4 Count in DataSheet */
 105         0xB9,   /* FAN 5 Count in DataSheet */
 106         0xBA,   /* FAN 6 Count in DataSheet */
 107         0xBE    /* FAN 7 Count in DataSheet */
 108 };
 109 static const u8 W83792D_REG_FAN_MIN[7] = {
 110         0x3B,   /* FAN 1 Count Low Limit in DataSheet */
 111         0x3C,   /* FAN 2 Count Low Limit in DataSheet */
 112         0x3D,   /* FAN 3 Count Low Limit in DataSheet */
 113         0xBB,   /* FAN 4 Count Low Limit in DataSheet */
 114         0xBC,   /* FAN 5 Count Low Limit in DataSheet */
 115         0xBD,   /* FAN 6 Count Low Limit in DataSheet */
 116         0xBF    /* FAN 7 Count Low Limit in DataSheet */
 117 };
 118 #define W83792D_REG_FAN_CFG 0x84        /* FAN Configuration in DataSheet */
 119 static const u8 W83792D_REG_FAN_DIV[4] = {
 120         0x47,   /* contains FAN2 and FAN1 Divisor */
 121         0x5B,   /* contains FAN4 and FAN3 Divisor */
 122         0x5C,   /* contains FAN6 and FAN5 Divisor */
 123         0x9E    /* contains FAN7 Divisor. */
 124 };
 125 static const u8 W83792D_REG_PWM[7] = {
 126         0x81,   /* FAN 1 Duty Cycle, be used to control */
 127         0x83,   /* FAN 2 Duty Cycle, be used to control */
 128         0x94,   /* FAN 3 Duty Cycle, be used to control */
 129         0xA3,   /* FAN 4 Duty Cycle, be used to control */
 130         0xA4,   /* FAN 5 Duty Cycle, be used to control */
 131         0xA5,   /* FAN 6 Duty Cycle, be used to control */
 132         0xA6    /* FAN 7 Duty Cycle, be used to control */
 133 };
 134 #define W83792D_REG_BANK                0x4E
 135 #define W83792D_REG_TEMP2_CONFIG        0xC2
 136 #define W83792D_REG_TEMP3_CONFIG        0xCA
 137
 138 static const u8 W83792D_REG_TEMP1[3] = {
 139         0x27,   /* TEMP 1 in DataSheet */
 140         0x39,   /* TEMP 1 Over in DataSheet */
 141         0x3A,   /* TEMP 1 Hyst in DataSheet */
 142 };
 143
 144 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
 145         { 0xC0,         /* TEMP 2 in DataSheet */
 146           0xC1,         /* TEMP 2(0.5 deg) in DataSheet */
 147           0xC5,         /* TEMP 2 Over High part in DataSheet */
 148           0xC6,         /* TEMP 2 Over Low part in DataSheet */
 149           0xC3,         /* TEMP 2 Thyst High part in DataSheet */
 150           0xC4 },       /* TEMP 2 Thyst Low part in DataSheet */
 151         { 0xC8,         /* TEMP 3 in DataSheet */
 152           0xC9,         /* TEMP 3(0.5 deg) in DataSheet */
 153           0xCD,         /* TEMP 3 Over High part in DataSheet */
 154           0xCE,         /* TEMP 3 Over Low part in DataSheet */
 155           0xCB,         /* TEMP 3 Thyst High part in DataSheet */
 156           0xCC }        /* TEMP 3 Thyst Low part in DataSheet */
 157 };
 158
 159 static const u8 W83792D_REG_THERMAL[3] = {
 160         0x85,   /* SmartFanI: Fan1 target value */
 161         0x86,   /* SmartFanI: Fan2 target value */
 162         0x96    /* SmartFanI: Fan3 target value */
 163 };
 164
 165 static const u8 W83792D_REG_TOLERANCE[3] = {
 166         0x87,   /* (bit3-0)SmartFan Fan1 tolerance */
 167         0x87,   /* (bit7-4)SmartFan Fan2 tolerance */
 168         0x97    /* (bit3-0)SmartFan Fan3 tolerance */
 169 };
 170
 171 static const u8 W83792D_REG_POINTS[3][4] = {
 172         { 0x85,         /* SmartFanII: Fan1 temp point 1 */
 173           0xE3,         /* SmartFanII: Fan1 temp point 2 */
 174           0xE4,         /* SmartFanII: Fan1 temp point 3 */
 175           0xE5 },       /* SmartFanII: Fan1 temp point 4 */
 176         { 0x86,         /* SmartFanII: Fan2 temp point 1 */
 177           0xE6,         /* SmartFanII: Fan2 temp point 2 */
 178           0xE7,         /* SmartFanII: Fan2 temp point 3 */
 179           0xE8 },       /* SmartFanII: Fan2 temp point 4 */
 180         { 0x96,         /* SmartFanII: Fan3 temp point 1 */
 181           0xE9,         /* SmartFanII: Fan3 temp point 2 */
 182           0xEA,         /* SmartFanII: Fan3 temp point 3 */
 183           0xEB }        /* SmartFanII: Fan3 temp point 4 */
 184 };
 185
 186 static const u8 W83792D_REG_LEVELS[3][4] = {
 187         { 0x88,         /* (bit3-0) SmartFanII: Fan1 Non-Stop */
 188           0x88,         /* (bit7-4) SmartFanII: Fan1 Level 1 */
 189           0xE0,         /* (bit7-4) SmartFanII: Fan1 Level 2 */
 190           0xE0 },       /* (bit3-0) SmartFanII: Fan1 Level 3 */
 191         { 0x89,         /* (bit3-0) SmartFanII: Fan2 Non-Stop */
 192           0x89,         /* (bit7-4) SmartFanII: Fan2 Level 1 */
 193           0xE1,         /* (bit7-4) SmartFanII: Fan2 Level 2 */
 194           0xE1 },       /* (bit3-0) SmartFanII: Fan2 Level 3 */
 195         { 0x98,         /* (bit3-0) SmartFanII: Fan3 Non-Stop */
 196           0x98,         /* (bit7-4) SmartFanII: Fan3 Level 1 */
 197           0xE2,         /* (bit7-4) SmartFanII: Fan3 Level 2 */
 198           0xE2 }        /* (bit3-0) SmartFanII: Fan3 Level 3 */
 199 };
 200
 201 #define W83792D_REG_GPIO_EN             0x1A
 202 #define W83792D_REG_CONFIG              0x40
 203 #define W83792D_REG_VID_FANDIV          0x47
 204 #define W83792D_REG_CHIPID              0x49
 205 #define W83792D_REG_WCHIPID             0x58
 206 #define W83792D_REG_CHIPMAN             0x4F
 207 #define W83792D_REG_PIN                 0x4B
 208 #define W83792D_REG_I2C_SUBADDR         0x4A
 209
 210 #define W83792D_REG_ALARM1 0xA9         /* realtime status register1 */
 211 #define W83792D_REG_ALARM2 0xAA         /* realtime status register2 */
 212 #define W83792D_REG_ALARM3 0xAB         /* realtime status register3 */
 213 #define W83792D_REG_CHASSIS 0x42        /* Bit 5: Case Open status bit */
 214 #define W83792D_REG_CHASSIS_CLR 0x44    /* Bit 7: Case Open CLR_CHS/Reset bit */
 215
 216 /* control in0/in1 's limit modifiability */
 217 #define W83792D_REG_VID_IN_B            0x17
 218
 219 #define W83792D_REG_VBAT                0x5D
 220 #define W83792D_REG_I2C_ADDR            0x48
 221
 222 /* Conversions. Rounding and limit checking is only done on the TO_REG
 223    variants. Note that you should be a bit careful with which arguments
 224    these macros are called: arguments may be evaluated more than once.
 225    Fixing this is just not worth it. */
 226 #define IN_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
 227                                 ((((nr)==6)||((nr)==7))?(val*6):(val*4)))
 228 #define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
 229                                 ((((nr)==6)||((nr)==7))?(val/6):(val/4)))
 230
 231 static inline u8
 232 FAN_TO_REG(long rpm, int div)
 233 {
 234         if (rpm == 0)
 235                 return 255;
 236         rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 237         return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 238 }
 239
 240 #define FAN_FROM_REG(val,div)   ((val) == 0   ? -1 : \
 241                                 ((val) == 255 ? 0 : \
 242                                                 1350000 / ((val) * (div))))
 243
 244 /* for temp1 */
 245 #define TEMP1_TO_REG(val)       (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 246                                         : (val)) / 1000, 0, 0xff))
 247 #define TEMP1_FROM_REG(val)     (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 248 /* for temp2 and temp3, because they need addtional resolution */
 249 #define TEMP_ADD_FROM_REG(val1, val2) \
 250         ((((val1) & 0x80 ? (val1)-0x100 \
 251                 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
 252 #define TEMP_ADD_TO_REG_HIGH(val) \
 253         (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 254                         : (val)) / 1000, 0, 0xff))
 255 #define TEMP_ADD_TO_REG_LOW(val)        ((val%1000) ? 0x80 : 0x00)
 256
 257 #define DIV_FROM_REG(val)               (1 << (val))
 258
 259 static inline u8
 260 DIV_TO_REG(long val)
 261 {
 262         int i;
 263         val = SENSORS_LIMIT(val, 1, 128) >> 1;
 264         for (i = 0; i < 7; i++) {
 265                 if (val == 0)
 266                         break;
 267                 val >>= 1;
 268         }
 269         return ((u8) i);
 270 }
 271
 272 struct w83792d_data {
 273         struct device *hwmon_dev;
 274
 275         struct mutex update_lock;
 276         char valid;             /* !=0 if following fields are valid */
 277         unsigned long last_updated;     /* In jiffies */
 278
 279         /* array of 2 pointers to subclients */
 280         struct i2c_client *lm75[2];
 281
 282         u8 in[9];               /* Register value */
 283         u8 in_max[9];           /* Register value */
 284         u8 in_min[9];           /* Register value */
 285         u16 low_bits;           /* Additional resolution to voltage in6-0 */
 286         u8 fan[7];              /* Register value */
 287         u8 fan_min[7];          /* Register value */
 288         u8 temp1[3];            /* current, over, thyst */
 289         u8 temp_add[2][6];      /* Register value */
 290         u8 fan_div[7];          /* Register encoding, shifted right */
 291         u8 pwm[7];              /* We only consider the first 3 set of pwm,
 292                                    although 792 chip has 7 set of pwm. */
 293         u8 pwmenable[3];
 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_probe(struct i2c_client *client,
 304                          const struct i2c_device_id *id);
 305 static int w83792d_detect(struct i2c_client *client, int kind,
 306                           struct i2c_board_info *info);
 307 static int w83792d_remove(struct i2c_client *client);
 308 static struct w83792d_data *w83792d_update_device(struct device *dev);
 309
 310 #ifdef DEBUG
 311 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 312 #endif
 313
 314 static void w83792d_init_client(struct i2c_client *client);
 315
 316 static const struct i2c_device_id w83792d_id[] = {
 317         { "w83792d", w83792d },
 318         { }
 319 };
 320 MODULE_DEVICE_TABLE(i2c, w83792d_id);
 321
 322 static struct i2c_driver w83792d_driver = {
 323         .class          = I2C_CLASS_HWMON,
 324         .driver = {
 325                 .name = "w83792d",
 326         },
 327         .probe          = w83792d_probe,
 328         .remove         = w83792d_remove,
 329         .id_table       = w83792d_id,
 330         .detect         = w83792d_detect,
 331         .address_data   = &addr_data,
 332 };
 333
 334 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
 335 {
 336         /* in7 and in8 do not have low bits, but the formula still works */
 337         return ((data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03));
 338 }
 339
 340 /* The SMBus locks itself. The Winbond W83792D chip has a bank register,
 341    but the driver only accesses registers in bank 0, so we don't have
 342    to switch banks and lock access between switches. */
 343 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
 344 {
 345         return i2c_smbus_read_byte_data(client, reg);
 346 }
 347
 348 static inline int
 349 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
 350 {
 351         return i2c_smbus_write_byte_data(client, reg, value);
 352 }
 353
 354 /* following are the sysfs callback functions */
 355 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 356                         char *buf)
 357 {
 358         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 359         int nr = sensor_attr->index;
 360         struct w83792d_data *data = w83792d_update_device(dev);
 361         return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
 362 }
 363
 364 #define show_in_reg(reg) \
 365 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 366                         char *buf) \
 367 { \
 368         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 369         int nr = sensor_attr->index; \
 370         struct w83792d_data *data = w83792d_update_device(dev); \
 371         return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
 372 }
 373
 374 show_in_reg(in_min);
 375 show_in_reg(in_max);
 376
 377 #define store_in_reg(REG, reg) \
 378 static ssize_t store_in_##reg (struct device *dev, \
 379                                 struct device_attribute *attr, \
 380                                 const char *buf, size_t count) \
 381 { \
 382         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 383         int nr = sensor_attr->index; \
 384         struct i2c_client *client = to_i2c_client(dev); \
 385         struct w83792d_data *data = i2c_get_clientdata(client); \
 386         u32 val; \
 387          \
 388         val = simple_strtoul(buf, NULL, 10); \
 389         mutex_lock(&data->update_lock); \
 390         data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
 391         w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
 392         mutex_unlock(&data->update_lock); \
 393          \
 394         return count; \
 395 }
 396 store_in_reg(MIN, min);
 397 store_in_reg(MAX, max);
 398
 399 #define show_fan_reg(reg) \
 400 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
 401                         char *buf) \
 402 { \
 403         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 404         int nr = sensor_attr->index - 1; \
 405         struct w83792d_data *data = w83792d_update_device(dev); \
 406         return sprintf(buf,"%d\n", \
 407                 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 408 }
 409
 410 show_fan_reg(fan);
 411 show_fan_reg(fan_min);
 412
 413 static ssize_t
 414 store_fan_min(struct device *dev, struct device_attribute *attr,
 415                 const char *buf, size_t count)
 416 {
 417         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 418         int nr = sensor_attr->index - 1;
 419         struct i2c_client *client = to_i2c_client(dev);
 420         struct w83792d_data *data = i2c_get_clientdata(client);
 421         u32 val;
 422
 423         val = simple_strtoul(buf, NULL, 10);
 424         mutex_lock(&data->update_lock);
 425         data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 426         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
 427                                 data->fan_min[nr]);
 428         mutex_unlock(&data->update_lock);
 429
 430         return count;
 431 }
 432
 433 static ssize_t
 434 show_fan_div(struct device *dev, struct device_attribute *attr,
 435                 char *buf)
 436 {
 437         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 438         int nr = sensor_attr->index;
 439         struct w83792d_data *data = w83792d_update_device(dev);
 440         return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
 441 }
 442
 443 /* Note: we save and restore the fan minimum here, because its value is
 444    determined in part by the fan divisor.  This follows the principle of
 445    least surprise; the user doesn't expect the fan minimum to change just
 446    because the divisor changed. */
 447 static ssize_t
 448 store_fan_div(struct device *dev, struct device_attribute *attr,
 449                 const char *buf, size_t count)
 450 {
 451         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 452         int nr = sensor_attr->index - 1;
 453         struct i2c_client *client = to_i2c_client(dev);
 454         struct w83792d_data *data = i2c_get_clientdata(client);
 455         unsigned long min;
 456         /*u8 reg;*/
 457         u8 fan_div_reg = 0;
 458         u8 tmp_fan_div;
 459
 460         /* Save fan_min */
 461         mutex_lock(&data->update_lock);
 462         min = FAN_FROM_REG(data->fan_min[nr],
 463                            DIV_FROM_REG(data->fan_div[nr]));
 464
 465         data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
 466
 467         fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
 468         fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
 469         tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
 470                                         : ((data->fan_div[nr]) & 0x07);
 471         w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
 472                                         fan_div_reg | tmp_fan_div);
 473
 474         /* Restore fan_min */
 475         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 476         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
 477         mutex_unlock(&data->update_lock);
 478
 479         return count;
 480 }
 481
 482 /* read/write the temperature1, includes measured value and limits */
 483
 484 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
 485                                 char *buf)
 486 {
 487         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 488         int nr = sensor_attr->index;
 489         struct w83792d_data *data = w83792d_update_device(dev);
 490         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
 491 }
 492
 493 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 494                                 const char *buf, size_t count)
 495 {
 496         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 497         int nr = sensor_attr->index;
 498         struct i2c_client *client = to_i2c_client(dev);
 499         struct w83792d_data *data = i2c_get_clientdata(client);
 500         s32 val;
 501
 502         val = simple_strtol(buf, NULL, 10);
 503         mutex_lock(&data->update_lock);
 504         data->temp1[nr] = TEMP1_TO_REG(val);
 505         w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 506                 data->temp1[nr]);
 507         mutex_unlock(&data->update_lock);
 508
 509         return count;
 510 }
 511
 512 /* read/write the temperature2-3, includes measured value and limits */
 513
 514 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
 515                                 char *buf)
 516 {
 517         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 518         int nr = sensor_attr->nr;
 519         int index = sensor_attr->index;
 520         struct w83792d_data *data = w83792d_update_device(dev);
 521         return sprintf(buf,"%ld\n",
 522                 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
 523                         data->temp_add[nr][index+1]));
 524 }
 525
 526 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 527                                 const char *buf, size_t count)
 528 {
 529         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 530         int nr = sensor_attr->nr;
 531         int index = sensor_attr->index;
 532         struct i2c_client *client = to_i2c_client(dev);
 533         struct w83792d_data *data = i2c_get_clientdata(client);
 534         s32 val;
 535
 536         val = simple_strtol(buf, NULL, 10);
 537         mutex_lock(&data->update_lock);
 538         data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 539         data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 540         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 541                 data->temp_add[nr][index]);
 542         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 543                 data->temp_add[nr][index+1]);
 544         mutex_unlock(&data->update_lock);
 545
 546         return count;
 547 }
 548
 549 /* get reatime status of all sensors items: voltage, temp, fan */
 550 static ssize_t
 551 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
 552 {
 553         struct w83792d_data *data = w83792d_update_device(dev);
 554         return sprintf(buf, "%d\n", data->alarms);
 555 }
 556
 557 static ssize_t show_alarm(struct device *dev,
 558                           struct device_attribute *attr, char *buf)
 559 {
 560         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 561         int nr = sensor_attr->index;
 562         struct w83792d_data *data = w83792d_update_device(dev);
 563         return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
 564 }
 565
 566 static ssize_t
 567 show_pwm(struct device *dev, struct device_attribute *attr,
 568                 char *buf)
 569 {
 570         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 571         int nr = sensor_attr->index;
 572         struct w83792d_data *data = w83792d_update_device(dev);
 573         return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 574 }
 575
 576 static ssize_t
 577 show_pwmenable(struct device *dev, struct device_attribute *attr,
 578                         char *buf)
 579 {
 580         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 581         int nr = sensor_attr->index - 1;
 582         struct w83792d_data *data = w83792d_update_device(dev);
 583         long pwm_enable_tmp = 1;
 584
 585         switch (data->pwmenable[nr]) {
 586         case 0:
 587                 pwm_enable_tmp = 1; /* manual mode */
 588                 break;
 589         case 1:
 590                 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
 591                 break;
 592         case 2:
 593                 pwm_enable_tmp = 2; /* Smart Fan II */
 594                 break;
 595         }
 596
 597         return sprintf(buf, "%ld\n", pwm_enable_tmp);
 598 }
 599
 600 static ssize_t
 601 store_pwm(struct device *dev, struct device_attribute *attr,
 602                 const char *buf, size_t count)
 603 {
 604         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 605         int nr = sensor_attr->index;
 606         struct i2c_client *client = to_i2c_client(dev);
 607         struct w83792d_data *data = i2c_get_clientdata(client);
 608         u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255) >> 4;
 609
 610         mutex_lock(&data->update_lock);
 611         val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
 612         data->pwm[nr] = val;
 613         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 614         mutex_unlock(&data->update_lock);
 615
 616         return count;
 617 }
 618
 619 static ssize_t
 620 store_pwmenable(struct device *dev, struct device_attribute *attr,
 621                         const char *buf, size_t count)
 622 {
 623         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 624         int nr = sensor_attr->index - 1;
 625         struct i2c_client *client = to_i2c_client(dev);
 626         struct w83792d_data *data = i2c_get_clientdata(client);
 627         u32 val;
 628         u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 629
 630         val = simple_strtoul(buf, NULL, 10);
 631         if (val < 1 || val > 3)
 632                 return -EINVAL;
 633
 634         mutex_lock(&data->update_lock);
 635         switch (val) {
 636         case 1:
 637                 data->pwmenable[nr] = 0; /* manual mode */
 638                 break;
 639         case 2:
 640                 data->pwmenable[nr] = 2; /* Smart Fan II */
 641                 break;
 642         case 3:
 643                 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 644                 break;
 645         }
 646         cfg1_tmp = data->pwmenable[0];
 647         cfg2_tmp = (data->pwmenable[1]) << 2;
 648         cfg3_tmp = (data->pwmenable[2]) << 4;
 649         cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
 650         fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 651         w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
 652         mutex_unlock(&data->update_lock);
 653
 654         return count;
 655 }
 656
 657 static ssize_t
 658 show_pwm_mode(struct device *dev, struct device_attribute *attr,
 659                         char *buf)
 660 {
 661         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 662         int nr = sensor_attr->index;
 663         struct w83792d_data *data = w83792d_update_device(dev);
 664         return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 665 }
 666
 667 static ssize_t
 668 store_pwm_mode(struct device *dev, struct device_attribute *attr,
 669                         const char *buf, size_t count)
 670 {
 671         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 672         int nr = sensor_attr->index;
 673         struct i2c_client *client = to_i2c_client(dev);
 674         struct w83792d_data *data = i2c_get_clientdata(client);
 675         u32 val;
 676
 677         val = simple_strtoul(buf, NULL, 10);
 678         if (val != 0 && val != 1)
 679                 return -EINVAL;
 680
 681         mutex_lock(&data->update_lock);
 682         data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
 683         if (val) {                      /* PWM mode */
 684                 data->pwm[nr] |= 0x80;
 685         } else {                        /* DC mode */
 686                 data->pwm[nr] &= 0x7f;
 687         }
 688         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 689         mutex_unlock(&data->update_lock);
 690
 691         return count;
 692 }
 693
 694 static ssize_t
 695 show_regs_chassis(struct device *dev, struct device_attribute *attr,
 696                         char *buf)
 697 {
 698         struct w83792d_data *data = w83792d_update_device(dev);
 699         return sprintf(buf, "%d\n", data->chassis);
 700 }
 701
 702 static ssize_t
 703 show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
 704 {
 705         struct w83792d_data *data = w83792d_update_device(dev);
 706         return sprintf(buf, "%d\n", data->chassis_clear);
 707 }
 708
 709 static ssize_t
 710 store_chassis_clear(struct device *dev, struct device_attribute *attr,
 711                         const char *buf, size_t count)
 712 {
 713         struct i2c_client *client = to_i2c_client(dev);
 714         struct w83792d_data *data = i2c_get_clientdata(client);
 715         u32 val;
 716         u8 temp1 = 0, temp2 = 0;
 717
 718         val = simple_strtoul(buf, NULL, 10);
 719         mutex_lock(&data->update_lock);
 720         data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
 721         temp1 = ((data->chassis_clear) << 7) & 0x80;
 722         temp2 = w83792d_read_value(client,
 723                 W83792D_REG_CHASSIS_CLR) & 0x7f;
 724         w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
 725         mutex_unlock(&data->update_lock);
 726
 727         return count;
 728 }
 729
 730 /* For Smart Fan I / Thermal Cruise */
 731 static ssize_t
 732 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 733                         char *buf)
 734 {
 735         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 736         int nr = sensor_attr->index;
 737         struct w83792d_data *data = w83792d_update_device(dev);
 738         return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 739 }
 740
 741 static ssize_t
 742 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 743                         const char *buf, size_t count)
 744 {
 745         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 746         int nr = sensor_attr->index - 1;
 747         struct i2c_client *client = to_i2c_client(dev);
 748         struct w83792d_data *data = i2c_get_clientdata(client);
 749         u32 val;
 750         u8 target_tmp=0, target_mask=0;
 751
 752         val = simple_strtoul(buf, NULL, 10);
 753         target_tmp = val;
 754         target_tmp = target_tmp & 0x7f;
 755         mutex_lock(&data->update_lock);
 756         target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
 757         data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
 758         w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 759                 (data->thermal_cruise[nr]) | target_mask);
 760         mutex_unlock(&data->update_lock);
 761
 762         return count;
 763 }
 764
 765 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
 766 static ssize_t
 767 show_tolerance(struct device *dev, struct device_attribute *attr,
 768                 char *buf)
 769 {
 770         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 771         int nr = sensor_attr->index;
 772         struct w83792d_data *data = w83792d_update_device(dev);
 773         return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 774 }
 775
 776 static ssize_t
 777 store_tolerance(struct device *dev, struct device_attribute *attr,
 778                 const char *buf, size_t count)
 779 {
 780         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 781         int nr = sensor_attr->index - 1;
 782         struct i2c_client *client = to_i2c_client(dev);
 783         struct w83792d_data *data = i2c_get_clientdata(client);
 784         u32 val;
 785         u8 tol_tmp, tol_mask;
 786
 787         val = simple_strtoul(buf, NULL, 10);
 788         mutex_lock(&data->update_lock);
 789         tol_mask = w83792d_read_value(client,
 790                 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 791         tol_tmp = SENSORS_LIMIT(val, 0, 15);
 792         tol_tmp &= 0x0f;
 793         data->tolerance[nr] = tol_tmp;
 794         if (nr == 1) {
 795                 tol_tmp <<= 4;
 796         }
 797         w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 798                 tol_mask | tol_tmp);
 799         mutex_unlock(&data->update_lock);
 800
 801         return count;
 802 }
 803
 804 /* For Smart Fan II */
 805 static ssize_t
 806 show_sf2_point(struct device *dev, struct device_attribute *attr,
 807                 char *buf)
 808 {
 809         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 810         int nr = sensor_attr->nr;
 811         int index = sensor_attr->index;
 812         struct w83792d_data *data = w83792d_update_device(dev);
 813         return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 814 }
 815
 816 static ssize_t
 817 store_sf2_point(struct device *dev, struct device_attribute *attr,
 818                 const char *buf, size_t count)
 819 {
 820         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 821         int nr = sensor_attr->nr - 1;
 822         int index = sensor_attr->index - 1;
 823         struct i2c_client *client = to_i2c_client(dev);
 824         struct w83792d_data *data = i2c_get_clientdata(client);
 825         u32 val;
 826         u8 mask_tmp = 0;
 827
 828         val = simple_strtoul(buf, NULL, 10);
 829         mutex_lock(&data->update_lock);
 830         data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
 831         mask_tmp = w83792d_read_value(client,
 832                                         W83792D_REG_POINTS[index][nr]) & 0x80;
 833         w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 834                 mask_tmp|data->sf2_points[index][nr]);
 835         mutex_unlock(&data->update_lock);
 836
 837         return count;
 838 }
 839
 840 static ssize_t
 841 show_sf2_level(struct device *dev, struct device_attribute *attr,
 842                 char *buf)
 843 {
 844         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 845         int nr = sensor_attr->nr;
 846         int index = sensor_attr->index;
 847         struct w83792d_data *data = w83792d_update_device(dev);
 848         return sprintf(buf, "%d\n",
 849                         (((data->sf2_levels[index-1][nr]) * 100) / 15));
 850 }
 851
 852 static ssize_t
 853 store_sf2_level(struct device *dev, struct device_attribute *attr,
 854                 const char *buf, size_t count)
 855 {
 856         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 857         int nr = sensor_attr->nr;
 858         int index = sensor_attr->index - 1;
 859         struct i2c_client *client = to_i2c_client(dev);
 860         struct w83792d_data *data = i2c_get_clientdata(client);
 861         u32 val;
 862         u8 mask_tmp=0, level_tmp=0;
 863
 864         val = simple_strtoul(buf, NULL, 10);
 865         mutex_lock(&data->update_lock);
 866         data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
 867         mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 868                 & ((nr==3) ? 0xf0 : 0x0f);
 869         if (nr==3) {
 870                 level_tmp = data->sf2_levels[index][nr];
 871         } else {
 872                 level_tmp = data->sf2_levels[index][nr] << 4;
 873         }
 874         w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
 875         mutex_unlock(&data->update_lock);
 876
 877         return count;
 878 }
 879
 880
 881 static int
 882 w83792d_detect_subclients(struct i2c_client *new_client)
 883 {
 884         int i, id, err;
 885         int address = new_client->addr;
 886         u8 val;
 887         struct i2c_adapter *adapter = new_client->adapter;
 888         struct w83792d_data *data = i2c_get_clientdata(new_client);
 889
 890         id = i2c_adapter_id(adapter);
 891         if (force_subclients[0] == id && force_subclients[1] == address) {
 892                 for (i = 2; i <= 3; i++) {
 893                         if (force_subclients[i] < 0x48 ||
 894                             force_subclients[i] > 0x4f) {
 895                                 dev_err(&new_client->dev, "invalid subclient "
 896                                         "address %d; must be 0x48-0x4f\n",
 897                                         force_subclients[i]);
 898                                 err = -ENODEV;
 899                                 goto ERROR_SC_0;
 900                         }
 901                 }
 902                 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
 903                                         (force_subclients[2] & 0x07) |
 904                                         ((force_subclients[3] & 0x07) << 4));
 905         }
 906
 907         val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
 908         if (!(val & 0x08)) {
 909                 data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
 910         }
 911         if (!(val & 0x80)) {
 912                 if ((data->lm75[0] != NULL) &&
 913                         ((val & 0x7) == ((val >> 4) & 0x7))) {
 914                         dev_err(&new_client->dev, "duplicate addresses 0x%x, "
 915                                 "use force_subclient\n", data->lm75[0]->addr);
 916                         err = -ENODEV;
 917                         goto ERROR_SC_1;
 918                 }
 919                 data->lm75[1] = i2c_new_dummy(adapter,
 920                                               0x48 + ((val >> 4) & 0x7));
 921         }
 922
 923         return 0;
 924
 925 /* Undo inits in case of errors */
 926
 927 ERROR_SC_1:
 928         if (data->lm75[0] != NULL)
 929                 i2c_unregister_device(data->lm75[0]);
 930 ERROR_SC_0:
 931         return err;
 932 }
 933
 934 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 935 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 936 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 937 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 938 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
 939 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
 940 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
 941 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
 942 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
 943 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
 944                         show_in_min, store_in_min, 0);
 945 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
 946                         show_in_min, store_in_min, 1);
 947 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
 948                         show_in_min, store_in_min, 2);
 949 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
 950                         show_in_min, store_in_min, 3);
 951 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
 952                         show_in_min, store_in_min, 4);
 953 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
 954                         show_in_min, store_in_min, 5);
 955 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
 956                         show_in_min, store_in_min, 6);
 957 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
 958                         show_in_min, store_in_min, 7);
 959 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
 960                         show_in_min, store_in_min, 8);
 961 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
 962                         show_in_max, store_in_max, 0);
 963 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
 964                         show_in_max, store_in_max, 1);
 965 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
 966                         show_in_max, store_in_max, 2);
 967 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
 968                         show_in_max, store_in_max, 3);
 969 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
 970                         show_in_max, store_in_max, 4);
 971 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
 972                         show_in_max, store_in_max, 5);
 973 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
 974                         show_in_max, store_in_max, 6);
 975 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
 976                         show_in_max, store_in_max, 7);
 977 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
 978                         show_in_max, store_in_max, 8);
 979 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
 980 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
 981 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
 982 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
 983                         show_temp1, store_temp1, 0, 1);
 984 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
 985                         store_temp23, 0, 2);
 986 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
 987                         store_temp23, 1, 2);
 988 static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
 989                         show_temp1, store_temp1, 0, 2);
 990 static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
 991                         show_temp23, store_temp23, 0, 4);
 992 static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
 993                         show_temp23, store_temp23, 1, 4);
 994 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
 995 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
 996 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
 997 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
 998 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
 999 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1000 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1001 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1002 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1003 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1004 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1005 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1006 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1007 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1008 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1009 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1010 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1011 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1012 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1013 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1014 static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
1015 static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
1016                         show_chassis_clear, store_chassis_clear);
1017 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1018 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1019 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1020 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1021                         show_pwmenable, store_pwmenable, 1);
1022 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1023                         show_pwmenable, store_pwmenable, 2);
1024 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1025                         show_pwmenable, store_pwmenable, 3);
1026 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1027                         show_pwm_mode, store_pwm_mode, 0);
1028 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1029                         show_pwm_mode, store_pwm_mode, 1);
1030 static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1031                         show_pwm_mode, store_pwm_mode, 2);
1032 static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1033                         show_tolerance, store_tolerance, 1);
1034 static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1035                         show_tolerance, store_tolerance, 2);
1036 static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1037                         show_tolerance, store_tolerance, 3);
1038 static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1039                         show_thermal_cruise, store_thermal_cruise, 1);
1040 static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1041                         show_thermal_cruise, store_thermal_cruise, 2);
1042 static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1043                         show_thermal_cruise, store_thermal_cruise, 3);
1044 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1045                         show_sf2_point, store_sf2_point, 1, 1);
1046 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1047                         show_sf2_point, store_sf2_point, 2, 1);
1048 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1049                         show_sf2_point, store_sf2_point, 3, 1);
1050 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1051                         show_sf2_point, store_sf2_point, 4, 1);
1052 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1053                         show_sf2_point, store_sf2_point, 1, 2);
1054 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1055                         show_sf2_point, store_sf2_point, 2, 2);
1056 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1057                         show_sf2_point, store_sf2_point, 3, 2);
1058 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1059                         show_sf2_point, store_sf2_point, 4, 2);
1060 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1061                         show_sf2_point, store_sf2_point, 1, 3);
1062 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1063                         show_sf2_point, store_sf2_point, 2, 3);
1064 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1065                         show_sf2_point, store_sf2_point, 3, 3);
1066 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1067                         show_sf2_point, store_sf2_point, 4, 3);
1068 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1069                         show_sf2_level, store_sf2_level, 1, 1);
1070 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1071                         show_sf2_level, store_sf2_level, 2, 1);
1072 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1073                         show_sf2_level, store_sf2_level, 3, 1);
1074 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1075                         show_sf2_level, store_sf2_level, 1, 2);
1076 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1077                         show_sf2_level, store_sf2_level, 2, 2);
1078 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1079                         show_sf2_level, store_sf2_level, 3, 2);
1080 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1081                         show_sf2_level, store_sf2_level, 1, 3);
1082 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1083                         show_sf2_level, store_sf2_level, 2, 3);
1084 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1085                         show_sf2_level, store_sf2_level, 3, 3);
1086 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1087 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1088 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1089 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1090 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1091 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1092 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1093 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1094                         show_fan_min, store_fan_min, 1);
1095 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1096                         show_fan_min, store_fan_min, 2);
1097 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1098                         show_fan_min, store_fan_min, 3);
1099 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1100                         show_fan_min, store_fan_min, 4);
1101 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1102                         show_fan_min, store_fan_min, 5);
1103 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1104                         show_fan_min, store_fan_min, 6);
1105 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1106                         show_fan_min, store_fan_min, 7);
1107 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1108                         show_fan_div, store_fan_div, 1);
1109 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1110                         show_fan_div, store_fan_div, 2);
1111 static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1112                         show_fan_div, store_fan_div, 3);
1113 static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1114                         show_fan_div, store_fan_div, 4);
1115 static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1116                         show_fan_div, store_fan_div, 5);
1117 static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1118                         show_fan_div, store_fan_div, 6);
1119 static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1120                         show_fan_div, store_fan_div, 7);
1121
1122 static struct attribute *w83792d_attributes_fan[4][5] = {
1123         {
1124                 &sensor_dev_attr_fan4_input.dev_attr.attr,
1125                 &sensor_dev_attr_fan4_min.dev_attr.attr,
1126                 &sensor_dev_attr_fan4_div.dev_attr.attr,
1127                 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1128                 NULL
1129         }, {
1130                 &sensor_dev_attr_fan5_input.dev_attr.attr,
1131                 &sensor_dev_attr_fan5_min.dev_attr.attr,
1132                 &sensor_dev_attr_fan5_div.dev_attr.attr,
1133                 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1134                 NULL
1135         }, {
1136                 &sensor_dev_attr_fan6_input.dev_attr.attr,
1137                 &sensor_dev_attr_fan6_min.dev_attr.attr,
1138                 &sensor_dev_attr_fan6_div.dev_attr.attr,
1139                 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1140                 NULL
1141         }, {
1142                 &sensor_dev_attr_fan7_input.dev_attr.attr,
1143                 &sensor_dev_attr_fan7_min.dev_attr.attr,
1144                 &sensor_dev_attr_fan7_div.dev_attr.attr,
1145                 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1146                 NULL
1147         }
1148 };
1149
1150 static const struct attribute_group w83792d_group_fan[4] = {
1151         { .attrs = w83792d_attributes_fan[0] },
1152         { .attrs = w83792d_attributes_fan[1] },
1153         { .attrs = w83792d_attributes_fan[2] },
1154         { .attrs = w83792d_attributes_fan[3] },
1155 };
1156
1157 static struct attribute *w83792d_attributes[] = {
1158         &sensor_dev_attr_in0_input.dev_attr.attr,
1159         &sensor_dev_attr_in0_max.dev_attr.attr,
1160         &sensor_dev_attr_in0_min.dev_attr.attr,
1161         &sensor_dev_attr_in1_input.dev_attr.attr,
1162         &sensor_dev_attr_in1_max.dev_attr.attr,
1163         &sensor_dev_attr_in1_min.dev_attr.attr,
1164         &sensor_dev_attr_in2_input.dev_attr.attr,
1165         &sensor_dev_attr_in2_max.dev_attr.attr,
1166         &sensor_dev_attr_in2_min.dev_attr.attr,
1167         &sensor_dev_attr_in3_input.dev_attr.attr,
1168         &sensor_dev_attr_in3_max.dev_attr.attr,
1169         &sensor_dev_attr_in3_min.dev_attr.attr,
1170         &sensor_dev_attr_in4_input.dev_attr.attr,
1171         &sensor_dev_attr_in4_max.dev_attr.attr,
1172         &sensor_dev_attr_in4_min.dev_attr.attr,
1173         &sensor_dev_attr_in5_input.dev_attr.attr,
1174         &sensor_dev_attr_in5_max.dev_attr.attr,
1175         &sensor_dev_attr_in5_min.dev_attr.attr,
1176         &sensor_dev_attr_in6_input.dev_attr.attr,
1177         &sensor_dev_attr_in6_max.dev_attr.attr,
1178         &sensor_dev_attr_in6_min.dev_attr.attr,
1179         &sensor_dev_attr_in7_input.dev_attr.attr,
1180         &sensor_dev_attr_in7_max.dev_attr.attr,
1181         &sensor_dev_attr_in7_min.dev_attr.attr,
1182         &sensor_dev_attr_in8_input.dev_attr.attr,
1183         &sensor_dev_attr_in8_max.dev_attr.attr,
1184         &sensor_dev_attr_in8_min.dev_attr.attr,
1185         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1186         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1187         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1188         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1189         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1190         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1191         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1192         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1193         &sensor_dev_attr_in8_alarm.dev_attr.attr,
1194         &sensor_dev_attr_temp1_input.dev_attr.attr,
1195         &sensor_dev_attr_temp1_max.dev_attr.attr,
1196         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1197         &sensor_dev_attr_temp2_input.dev_attr.attr,
1198         &sensor_dev_attr_temp2_max.dev_attr.attr,
1199         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1200         &sensor_dev_attr_temp3_input.dev_attr.attr,
1201         &sensor_dev_attr_temp3_max.dev_attr.attr,
1202         &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1203         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1204         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1205         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1206         &sensor_dev_attr_pwm1.dev_attr.attr,
1207         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1208         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1209         &sensor_dev_attr_pwm2.dev_attr.attr,
1210         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1211         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1212         &sensor_dev_attr_pwm3.dev_attr.attr,
1213         &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1214         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1215         &dev_attr_alarms.attr,
1216         &dev_attr_chassis.attr,
1217         &dev_attr_chassis_clear.attr,
1218         &sensor_dev_attr_tolerance1.dev_attr.attr,
1219         &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1220         &sensor_dev_attr_tolerance2.dev_attr.attr,
1221         &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1222         &sensor_dev_attr_tolerance3.dev_attr.attr,
1223         &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1224         &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1225         &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1226         &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1227         &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1228         &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1229         &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1230         &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1231         &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1232         &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1233         &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1234         &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1235         &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1236         &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1237         &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1238         &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1239         &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1240         &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1241         &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1242         &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1243         &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1244         &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1245         &sensor_dev_attr_fan1_input.dev_attr.attr,
1246         &sensor_dev_attr_fan1_min.dev_attr.attr,
1247         &sensor_dev_attr_fan1_div.dev_attr.attr,
1248         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1249         &sensor_dev_attr_fan2_input.dev_attr.attr,
1250         &sensor_dev_attr_fan2_min.dev_attr.attr,
1251         &sensor_dev_attr_fan2_div.dev_attr.attr,
1252         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1253         &sensor_dev_attr_fan3_input.dev_attr.attr,
1254         &sensor_dev_attr_fan3_min.dev_attr.attr,
1255         &sensor_dev_attr_fan3_div.dev_attr.attr,
1256         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1257         NULL
1258 };
1259
1260 static const struct attribute_group w83792d_group = {
1261         .attrs = w83792d_attributes,
1262 };
1263
1264 /* Return 0 if detection is successful, -ENODEV otherwise */
1265 static int
1266 w83792d_detect(struct i2c_client *client, int kind, struct i2c_board_info *info)
1267 {
1268         struct i2c_adapter *adapter = client->adapter;
1269         int val1, val2;
1270         unsigned short address = client->addr;
1271
1272         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1273                 return -ENODEV;
1274         }
1275
1276         /* The w83792d may be stuck in some other bank than bank 0. This may
1277            make reading other information impossible. Specify a force=... or
1278            force_*=... parameter, and the Winbond will be reset to the right
1279            bank. */
1280         if (kind < 0) {
1281                 if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80) {
1282                         return -ENODEV;
1283                 }
1284                 val1 = w83792d_read_value(client, W83792D_REG_BANK);
1285                 val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1286                 /* Check for Winbond ID if in bank 0 */
1287                 if (!(val1 & 0x07)) {  /* is Bank0 */
1288                         if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
1289                              ((val1 & 0x80) && (val2 != 0x5c))) {
1290                                 return -ENODEV;
1291                         }
1292                 }
1293                 /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1294                    should match */
1295                 if (w83792d_read_value(client,
1296                                         W83792D_REG_I2C_ADDR) != address) {
1297                         return -ENODEV;
1298                 }
1299         }
1300
1301         /* We have either had a force parameter, or we have already detected the
1302            Winbond. Put it now into bank 0 and Vendor ID High Byte */
1303         w83792d_write_value(client,
1304                             W83792D_REG_BANK,
1305                             (w83792d_read_value(client,
1306                                 W83792D_REG_BANK) & 0x78) | 0x80);
1307
1308         /* Determine the chip type. */
1309         if (kind <= 0) {
1310                 /* get vendor ID */
1311                 val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1312                 if (val2 != 0x5c) {  /* the vendor is NOT Winbond */
1313                         return -ENODEV;
1314                 }
1315                 val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1316                 if (val1 == 0x7a) {
1317                         kind = w83792d;
1318                 } else {
1319                         if (kind == 0)
1320                                 dev_warn(&adapter->dev,
1321                                         "w83792d: Ignoring 'force' parameter for"
1322                                         " unknown chip at adapter %d, address"
1323                                         " 0x%02x\n", i2c_adapter_id(adapter),
1324                                         address);
1325                         return -ENODEV;
1326                 }
1327         }
1328
1329         strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
1330
1331         return 0;
1332 }
1333
1334 static int
1335 w83792d_probe(struct i2c_client *client, const struct i2c_device_id *id)
1336 {
1337         struct w83792d_data *data;
1338         struct device *dev = &client->dev;
1339         int i, val1, err;
1340
1341         data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL);
1342         if (!data) {
1343                 err = -ENOMEM;
1344                 goto ERROR0;
1345         }
1346
1347         i2c_set_clientdata(client, data);
1348         data->valid = 0;
1349         mutex_init(&data->update_lock);
1350
1351         err = w83792d_detect_subclients(client);
1352         if (err)
1353                 goto ERROR1;
1354
1355         /* Initialize the chip */
1356         w83792d_init_client(client);
1357
1358         /* A few vars need to be filled upon startup */
1359         for (i = 0; i < 7; i++) {
1360                 data->fan_min[i] = w83792d_read_value(client,
1361                                         W83792D_REG_FAN_MIN[i]);
1362         }
1363
1364         /* Register sysfs hooks */
1365         if ((err = sysfs_create_group(&dev->kobj, &w83792d_group)))
1366                 goto ERROR3;
1367
1368         /* Read GPIO enable register to check if pins for fan 4,5 are used as
1369            GPIO */
1370         val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1371
1372         if (!(val1 & 0x40))
1373                 if ((err = sysfs_create_group(&dev->kobj,
1374                                               &w83792d_group_fan[0])))
1375                         goto exit_remove_files;
1376
1377         if (!(val1 & 0x20))
1378                 if ((err = sysfs_create_group(&dev->kobj,
1379                                               &w83792d_group_fan[1])))
1380                         goto exit_remove_files;
1381
1382         val1 = w83792d_read_value(client, W83792D_REG_PIN);
1383         if (val1 & 0x40)
1384                 if ((err = sysfs_create_group(&dev->kobj,
1385                                               &w83792d_group_fan[2])))
1386                         goto exit_remove_files;
1387
1388         if (val1 & 0x04)
1389                 if ((err = sysfs_create_group(&dev->kobj,
1390                                               &w83792d_group_fan[3])))
1391                         goto exit_remove_files;
1392
1393         data->hwmon_dev = hwmon_device_register(dev);
1394         if (IS_ERR(data->hwmon_dev)) {
1395                 err = PTR_ERR(data->hwmon_dev);
1396                 goto exit_remove_files;
1397         }
1398
1399         return 0;
1400
1401 exit_remove_files:
1402         sysfs_remove_group(&dev->kobj, &w83792d_group);
1403         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1404                 sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1405 ERROR3:
1406         if (data->lm75[0] != NULL)
1407                 i2c_unregister_device(data->lm75[0]);
1408         if (data->lm75[1] != NULL)
1409                 i2c_unregister_device(data->lm75[1]);
1410 ERROR1:
1411         kfree(data);
1412 ERROR0:
1413         return err;
1414 }
1415
1416 static int
1417 w83792d_remove(struct i2c_client *client)
1418 {
1419         struct w83792d_data *data = i2c_get_clientdata(client);
1420         int i;
1421
1422         hwmon_device_unregister(data->hwmon_dev);
1423         sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1424         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1425                 sysfs_remove_group(&client->dev.kobj,
1426                                    &w83792d_group_fan[i]);
1427
1428         if (data->lm75[0] != NULL)
1429                 i2c_unregister_device(data->lm75[0]);
1430         if (data->lm75[1] != NULL)
1431                 i2c_unregister_device(data->lm75[1]);
1432
1433         kfree(data);
1434         return 0;
1435 }
1436
1437 static void
1438 w83792d_init_client(struct i2c_client *client)
1439 {
1440         u8 temp2_cfg, temp3_cfg, vid_in_b;
1441
1442         if (init) {
1443                 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1444         }
1445         /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1446            W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1447              vin0/vin1 can be modified by user;
1448            W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1449              vin0/vin1 auto-updated, can NOT be modified by user. */
1450         vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1451         w83792d_write_value(client, W83792D_REG_VID_IN_B,
1452                             vid_in_b & 0xbf);
1453
1454         temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1455         temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1456         w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1457                                 temp2_cfg & 0xe6);
1458         w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1459                                 temp3_cfg & 0xe6);
1460
1461         /* Start monitoring */
1462         w83792d_write_value(client, W83792D_REG_CONFIG,
1463                             (w83792d_read_value(client,
1464                                                 W83792D_REG_CONFIG) & 0xf7)
1465                             | 0x01);
1466 }
1467
1468 static struct w83792d_data *w83792d_update_device(struct device *dev)
1469 {
1470         struct i2c_client *client = to_i2c_client(dev);
1471         struct w83792d_data *data = i2c_get_clientdata(client);
1472         int i, j;
1473         u8 reg_array_tmp[4], reg_tmp;
1474
1475         mutex_lock(&data->update_lock);
1476
1477         if (time_after
1478             (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1479             || time_before(jiffies, data->last_updated) || !data->valid) {
1480                 dev_dbg(dev, "Starting device update\n");
1481
1482                 /* Update the voltages measured value and limits */
1483                 for (i = 0; i < 9; i++) {
1484                         data->in[i] = w83792d_read_value(client,
1485                                                 W83792D_REG_IN[i]);
1486                         data->in_max[i] = w83792d_read_value(client,
1487                                                 W83792D_REG_IN_MAX[i]);
1488                         data->in_min[i] = w83792d_read_value(client,
1489                                                 W83792D_REG_IN_MIN[i]);
1490                 }
1491                 data->low_bits = w83792d_read_value(client,
1492                                                 W83792D_REG_LOW_BITS1) +
1493                                  (w83792d_read_value(client,
1494                                                 W83792D_REG_LOW_BITS2) << 8);
1495                 for (i = 0; i < 7; i++) {
1496                         /* Update the Fan measured value and limits */
1497                         data->fan[i] = w83792d_read_value(client,
1498                                                 W83792D_REG_FAN[i]);
1499                         data->fan_min[i] = w83792d_read_value(client,
1500                                                 W83792D_REG_FAN_MIN[i]);
1501                         /* Update the PWM/DC Value and PWM/DC flag */
1502                         data->pwm[i] = w83792d_read_value(client,
1503                                                 W83792D_REG_PWM[i]);
1504                 }
1505
1506                 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1507                 data->pwmenable[0] = reg_tmp & 0x03;
1508                 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1509                 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1510
1511                 for (i = 0; i < 3; i++) {
1512                         data->temp1[i] = w83792d_read_value(client,
1513                                                         W83792D_REG_TEMP1[i]);
1514                 }
1515                 for (i = 0; i < 2; i++) {
1516                         for (j = 0; j < 6; j++) {
1517                                 data->temp_add[i][j] = w83792d_read_value(
1518                                         client,W83792D_REG_TEMP_ADD[i][j]);
1519                         }
1520                 }
1521
1522                 /* Update the Fan Divisor */
1523                 for (i = 0; i < 4; i++) {
1524                         reg_array_tmp[i] = w83792d_read_value(client,
1525                                                         W83792D_REG_FAN_DIV[i]);
1526                 }
1527                 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1528                 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1529                 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1530                 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1531                 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1532                 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1533                 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1534
1535                 /* Update the realtime status */
1536                 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1537                         (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1538                         (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1539
1540                 /* Update CaseOpen status and it's CLR_CHS. */
1541                 data->chassis = (w83792d_read_value(client,
1542                         W83792D_REG_CHASSIS) >> 5) & 0x01;
1543                 data->chassis_clear = (w83792d_read_value(client,
1544                         W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
1545
1546                 /* Update Thermal Cruise/Smart Fan I target value */
1547                 for (i = 0; i < 3; i++) {
1548                         data->thermal_cruise[i] =
1549                                 w83792d_read_value(client,
1550                                 W83792D_REG_THERMAL[i]) & 0x7f;
1551                 }
1552
1553                 /* Update Smart Fan I/II tolerance */
1554                 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1555                 data->tolerance[0] = reg_tmp & 0x0f;
1556                 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1557                 data->tolerance[2] = w83792d_read_value(client,
1558                                         W83792D_REG_TOLERANCE[2]) & 0x0f;
1559
1560                 /* Update Smart Fan II temperature points */
1561                 for (i = 0; i < 3; i++) {
1562                         for (j = 0; j < 4; j++) {
1563                                 data->sf2_points[i][j] = w83792d_read_value(
1564                                         client,W83792D_REG_POINTS[i][j]) & 0x7f;
1565                         }
1566                 }
1567
1568                 /* Update Smart Fan II duty cycle levels */
1569                 for (i = 0; i < 3; i++) {
1570                         reg_tmp = w83792d_read_value(client,
1571                                                 W83792D_REG_LEVELS[i][0]);
1572                         data->sf2_levels[i][0] = reg_tmp & 0x0f;
1573                         data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1574                         reg_tmp = w83792d_read_value(client,
1575                                                 W83792D_REG_LEVELS[i][2]);
1576                         data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1577                         data->sf2_levels[i][3] = reg_tmp & 0x0f;
1578                 }
1579
1580                 data->last_updated = jiffies;
1581                 data->valid = 1;
1582         }
1583
1584         mutex_unlock(&data->update_lock);
1585
1586 #ifdef DEBUG
1587         w83792d_print_debug(data, dev);
1588 #endif
1589
1590         return data;
1591 }
1592
1593 #ifdef DEBUG
1594 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1595 {
1596         int i=0, j=0;
1597         dev_dbg(dev, "==========The following is the debug message...========\n");
1598         dev_dbg(dev, "9 set of Voltages: =====>\n");
1599         for (i=0; i<9; i++) {
1600                 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1601                 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1602                 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1603         }
1604         dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1605         dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1606         dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1607         for (i=0; i<7; i++) {
1608                 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1609                 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1610                 dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1611         }
1612         dev_dbg(dev, "3 set of Temperatures: =====>\n");
1613         for (i=0; i<3; i++) {
1614                 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1615         }
1616
1617         for (i=0; i<2; i++) {
1618                 for (j=0; j<6; j++) {
1619                         dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1620                                                         data->temp_add[i][j]);
1621                 }
1622         }
1623
1624         for (i=0; i<7; i++) {
1625                 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1626         }
1627         dev_dbg(dev, "==========End of the debug message...==================\n");
1628         dev_dbg(dev, "\n");
1629 }
1630 #endif
1631
1632 static int __init
1633 sensors_w83792d_init(void)
1634 {
1635         return i2c_add_driver(&w83792d_driver);
1636 }
1637
1638 static void __exit
1639 sensors_w83792d_exit(void)
1640 {
1641         i2c_del_driver(&w83792d_driver);
1642 }
1643
1644 MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
1645 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1646 MODULE_LICENSE("GPL");
1647
1648 module_init(sensors_w83792d_init);
1649 module_exit(sensors_w83792d_exit);
1650