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 I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
  55                         "{bus, clientaddr, subclientaddr1, subclientaddr2}");
  56
  57 static int init;
  58 module_param(init, bool, 0);
  59 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
  60
  61 /* The W83792D registers */
  62 static const u8 W83792D_REG_IN[9] = {
  63         0x20,   /* Vcore A in DataSheet */
  64         0x21,   /* Vcore B in DataSheet */
  65         0x22,   /* VIN0 in DataSheet */
  66         0x23,   /* VIN1 in DataSheet */
  67         0x24,   /* VIN2 in DataSheet */
  68         0x25,   /* VIN3 in DataSheet */
  69         0x26,   /* 5VCC in DataSheet */
  70         0xB0,   /* 5VSB in DataSheet */
  71         0xB1    /* VBAT in DataSheet */
  72 };
  73 #define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
  74 #define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
  75 static const u8 W83792D_REG_IN_MAX[9] = {
  76         0x2B,   /* Vcore A High Limit in DataSheet */
  77         0x2D,   /* Vcore B High Limit in DataSheet */
  78         0x2F,   /* VIN0 High Limit in DataSheet */
  79         0x31,   /* VIN1 High Limit in DataSheet */
  80         0x33,   /* VIN2 High Limit in DataSheet */
  81         0x35,   /* VIN3 High Limit in DataSheet */
  82         0x37,   /* 5VCC High Limit in DataSheet */
  83         0xB4,   /* 5VSB High Limit in DataSheet */
  84         0xB6    /* VBAT High Limit in DataSheet */
  85 };
  86 static const u8 W83792D_REG_IN_MIN[9] = {
  87         0x2C,   /* Vcore A Low Limit in DataSheet */
  88         0x2E,   /* Vcore B Low Limit in DataSheet */
  89         0x30,   /* VIN0 Low Limit in DataSheet */
  90         0x32,   /* VIN1 Low Limit in DataSheet */
  91         0x34,   /* VIN2 Low Limit in DataSheet */
  92         0x36,   /* VIN3 Low Limit in DataSheet */
  93         0x38,   /* 5VCC Low Limit in DataSheet */
  94         0xB5,   /* 5VSB Low Limit in DataSheet */
  95         0xB7    /* VBAT Low Limit in DataSheet */
  96 };
  97 static const u8 W83792D_REG_FAN[7] = {
  98         0x28,   /* FAN 1 Count in DataSheet */
  99         0x29,   /* FAN 2 Count in DataSheet */
 100         0x2A,   /* FAN 3 Count in DataSheet */
 101         0xB8,   /* FAN 4 Count in DataSheet */
 102         0xB9,   /* FAN 5 Count in DataSheet */
 103         0xBA,   /* FAN 6 Count in DataSheet */
 104         0xBE    /* FAN 7 Count in DataSheet */
 105 };
 106 static const u8 W83792D_REG_FAN_MIN[7] = {
 107         0x3B,   /* FAN 1 Count Low Limit in DataSheet */
 108         0x3C,   /* FAN 2 Count Low Limit in DataSheet */
 109         0x3D,   /* FAN 3 Count Low Limit in DataSheet */
 110         0xBB,   /* FAN 4 Count Low Limit in DataSheet */
 111         0xBC,   /* FAN 5 Count Low Limit in DataSheet */
 112         0xBD,   /* FAN 6 Count Low Limit in DataSheet */
 113         0xBF    /* FAN 7 Count Low Limit in DataSheet */
 114 };
 115 #define W83792D_REG_FAN_CFG 0x84        /* FAN Configuration in DataSheet */
 116 static const u8 W83792D_REG_FAN_DIV[4] = {
 117         0x47,   /* contains FAN2 and FAN1 Divisor */
 118         0x5B,   /* contains FAN4 and FAN3 Divisor */
 119         0x5C,   /* contains FAN6 and FAN5 Divisor */
 120         0x9E    /* contains FAN7 Divisor. */
 121 };
 122 static const u8 W83792D_REG_PWM[7] = {
 123         0x81,   /* FAN 1 Duty Cycle, be used to control */
 124         0x83,   /* FAN 2 Duty Cycle, be used to control */
 125         0x94,   /* FAN 3 Duty Cycle, be used to control */
 126         0xA3,   /* FAN 4 Duty Cycle, be used to control */
 127         0xA4,   /* FAN 5 Duty Cycle, be used to control */
 128         0xA5,   /* FAN 6 Duty Cycle, be used to control */
 129         0xA6    /* FAN 7 Duty Cycle, be used to control */
 130 };
 131 #define W83792D_REG_BANK                0x4E
 132 #define W83792D_REG_TEMP2_CONFIG        0xC2
 133 #define W83792D_REG_TEMP3_CONFIG        0xCA
 134
 135 static const u8 W83792D_REG_TEMP1[3] = {
 136         0x27,   /* TEMP 1 in DataSheet */
 137         0x39,   /* TEMP 1 Over in DataSheet */
 138         0x3A,   /* TEMP 1 Hyst in DataSheet */
 139 };
 140
 141 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
 142         { 0xC0,         /* TEMP 2 in DataSheet */
 143           0xC1,         /* TEMP 2(0.5 deg) in DataSheet */
 144           0xC5,         /* TEMP 2 Over High part in DataSheet */
 145           0xC6,         /* TEMP 2 Over Low part in DataSheet */
 146           0xC3,         /* TEMP 2 Thyst High part in DataSheet */
 147           0xC4 },       /* TEMP 2 Thyst Low part in DataSheet */
 148         { 0xC8,         /* TEMP 3 in DataSheet */
 149           0xC9,         /* TEMP 3(0.5 deg) in DataSheet */
 150           0xCD,         /* TEMP 3 Over High part in DataSheet */
 151           0xCE,         /* TEMP 3 Over Low part in DataSheet */
 152           0xCB,         /* TEMP 3 Thyst High part in DataSheet */
 153           0xCC }        /* TEMP 3 Thyst Low part in DataSheet */
 154 };
 155
 156 static const u8 W83792D_REG_THERMAL[3] = {
 157         0x85,   /* SmartFanI: Fan1 target value */
 158         0x86,   /* SmartFanI: Fan2 target value */
 159         0x96    /* SmartFanI: Fan3 target value */
 160 };
 161
 162 static const u8 W83792D_REG_TOLERANCE[3] = {
 163         0x87,   /* (bit3-0)SmartFan Fan1 tolerance */
 164         0x87,   /* (bit7-4)SmartFan Fan2 tolerance */
 165         0x97    /* (bit3-0)SmartFan Fan3 tolerance */
 166 };
 167
 168 static const u8 W83792D_REG_POINTS[3][4] = {
 169         { 0x85,         /* SmartFanII: Fan1 temp point 1 */
 170           0xE3,         /* SmartFanII: Fan1 temp point 2 */
 171           0xE4,         /* SmartFanII: Fan1 temp point 3 */
 172           0xE5 },       /* SmartFanII: Fan1 temp point 4 */
 173         { 0x86,         /* SmartFanII: Fan2 temp point 1 */
 174           0xE6,         /* SmartFanII: Fan2 temp point 2 */
 175           0xE7,         /* SmartFanII: Fan2 temp point 3 */
 176           0xE8 },       /* SmartFanII: Fan2 temp point 4 */
 177         { 0x96,         /* SmartFanII: Fan3 temp point 1 */
 178           0xE9,         /* SmartFanII: Fan3 temp point 2 */
 179           0xEA,         /* SmartFanII: Fan3 temp point 3 */
 180           0xEB }        /* SmartFanII: Fan3 temp point 4 */
 181 };
 182
 183 static const u8 W83792D_REG_LEVELS[3][4] = {
 184         { 0x88,         /* (bit3-0) SmartFanII: Fan1 Non-Stop */
 185           0x88,         /* (bit7-4) SmartFanII: Fan1 Level 1 */
 186           0xE0,         /* (bit7-4) SmartFanII: Fan1 Level 2 */
 187           0xE0 },       /* (bit3-0) SmartFanII: Fan1 Level 3 */
 188         { 0x89,         /* (bit3-0) SmartFanII: Fan2 Non-Stop */
 189           0x89,         /* (bit7-4) SmartFanII: Fan2 Level 1 */
 190           0xE1,         /* (bit7-4) SmartFanII: Fan2 Level 2 */
 191           0xE1 },       /* (bit3-0) SmartFanII: Fan2 Level 3 */
 192         { 0x98,         /* (bit3-0) SmartFanII: Fan3 Non-Stop */
 193           0x98,         /* (bit7-4) SmartFanII: Fan3 Level 1 */
 194           0xE2,         /* (bit7-4) SmartFanII: Fan3 Level 2 */
 195           0xE2 }        /* (bit3-0) SmartFanII: Fan3 Level 3 */
 196 };
 197
 198 #define W83792D_REG_GPIO_EN             0x1A
 199 #define W83792D_REG_CONFIG              0x40
 200 #define W83792D_REG_VID_FANDIV          0x47
 201 #define W83792D_REG_CHIPID              0x49
 202 #define W83792D_REG_WCHIPID             0x58
 203 #define W83792D_REG_CHIPMAN             0x4F
 204 #define W83792D_REG_PIN                 0x4B
 205 #define W83792D_REG_I2C_SUBADDR         0x4A
 206
 207 #define W83792D_REG_ALARM1 0xA9         /* realtime status register1 */
 208 #define W83792D_REG_ALARM2 0xAA         /* realtime status register2 */
 209 #define W83792D_REG_ALARM3 0xAB         /* realtime status register3 */
 210 #define W83792D_REG_CHASSIS 0x42        /* Bit 5: Case Open status bit */
 211 #define W83792D_REG_CHASSIS_CLR 0x44    /* Bit 7: Case Open CLR_CHS/Reset bit */
 212
 213 /* control in0/in1 's limit modifiability */
 214 #define W83792D_REG_VID_IN_B            0x17
 215
 216 #define W83792D_REG_VBAT                0x5D
 217 #define W83792D_REG_I2C_ADDR            0x48
 218
 219 /* Conversions. Rounding and limit checking is only done on the TO_REG
 220    variants. Note that you should be a bit careful with which arguments
 221    these macros are called: arguments may be evaluated more than once.
 222    Fixing this is just not worth it. */
 223 #define IN_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
 224                                 ((((nr)==6)||((nr)==7))?(val*6):(val*4)))
 225 #define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
 226                                 ((((nr)==6)||((nr)==7))?(val/6):(val/4)))
 227
 228 static inline u8
 229 FAN_TO_REG(long rpm, int div)
 230 {
 231         if (rpm == 0)
 232                 return 255;
 233         rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 234         return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 235 }
 236
 237 #define FAN_FROM_REG(val,div)   ((val) == 0   ? -1 : \
 238                                 ((val) == 255 ? 0 : \
 239                                                 1350000 / ((val) * (div))))
 240
 241 /* for temp1 */
 242 #define TEMP1_TO_REG(val)       (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 243                                         : (val)) / 1000, 0, 0xff))
 244 #define TEMP1_FROM_REG(val)     (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 245 /* for temp2 and temp3, because they need addtional resolution */
 246 #define TEMP_ADD_FROM_REG(val1, val2) \
 247         ((((val1) & 0x80 ? (val1)-0x100 \
 248                 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
 249 #define TEMP_ADD_TO_REG_HIGH(val) \
 250         (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 251                         : (val)) / 1000, 0, 0xff))
 252 #define TEMP_ADD_TO_REG_LOW(val)        ((val%1000) ? 0x80 : 0x00)
 253
 254 #define DIV_FROM_REG(val)               (1 << (val))
 255
 256 static inline u8
 257 DIV_TO_REG(long val)
 258 {
 259         int i;
 260         val = SENSORS_LIMIT(val, 1, 128) >> 1;
 261         for (i = 0; i < 7; i++) {
 262                 if (val == 0)
 263                         break;
 264                 val >>= 1;
 265         }
 266         return ((u8) i);
 267 }
 268
 269 struct w83792d_data {
 270         struct device *hwmon_dev;
 271
 272         struct mutex update_lock;
 273         char valid;             /* !=0 if following fields are valid */
 274         unsigned long last_updated;     /* In jiffies */
 275
 276         /* array of 2 pointers to subclients */
 277         struct i2c_client *lm75[2];
 278
 279         u8 in[9];               /* Register value */
 280         u8 in_max[9];           /* Register value */
 281         u8 in_min[9];           /* Register value */
 282         u16 low_bits;           /* Additional resolution to voltage in6-0 */
 283         u8 fan[7];              /* Register value */
 284         u8 fan_min[7];          /* Register value */
 285         u8 temp1[3];            /* current, over, thyst */
 286         u8 temp_add[2][6];      /* Register value */
 287         u8 fan_div[7];          /* Register encoding, shifted right */
 288         u8 pwm[7];              /* We only consider the first 3 set of pwm,
 289                                    although 792 chip has 7 set of pwm. */
 290         u8 pwmenable[3];
 291         u32 alarms;             /* realtime status register encoding,combined */
 292         u8 chassis;             /* Chassis status */
 293         u8 chassis_clear;       /* CLR_CHS, clear chassis intrusion detection */
 294         u8 thermal_cruise[3];   /* Smart FanI: Fan1,2,3 target value */
 295         u8 tolerance[3];        /* Fan1,2,3 tolerance(Smart Fan I/II) */
 296         u8 sf2_points[3][4];    /* Smart FanII: Fan1,2,3 temperature points */
 297         u8 sf2_levels[3][4];    /* Smart FanII: Fan1,2,3 duty cycle levels */
 298 };
 299
 300 static int w83792d_probe(struct i2c_client *client,
 301                          const struct i2c_device_id *id);
 302 static int w83792d_detect(struct i2c_client *client, int kind,
 303                           struct i2c_board_info *info);
 304 static int w83792d_remove(struct i2c_client *client);
 305 static struct w83792d_data *w83792d_update_device(struct device *dev);
 306
 307 #ifdef DEBUG
 308 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 309 #endif
 310
 311 static void w83792d_init_client(struct i2c_client *client);
 312
 313 static const struct i2c_device_id w83792d_id[] = {
 314         { "w83792d", w83792d },
 315         { }
 316 };
 317 MODULE_DEVICE_TABLE(i2c, w83792d_id);
 318
 319 static struct i2c_driver w83792d_driver = {
 320         .class          = I2C_CLASS_HWMON,
 321         .driver = {
 322                 .name = "w83792d",
 323         },
 324         .probe          = w83792d_probe,
 325         .remove         = w83792d_remove,
 326         .id_table       = w83792d_id,
 327         .detect         = w83792d_detect,
 328         .address_data   = &addr_data,
 329 };
 330
 331 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
 332 {
 333         /* in7 and in8 do not have low bits, but the formula still works */
 334         return ((data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03));
 335 }
 336
 337 /* The SMBus locks itself. The Winbond W83792D chip has a bank register,
 338    but the driver only accesses registers in bank 0, so we don't have
 339    to switch banks and lock access between switches. */
 340 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
 341 {
 342         return i2c_smbus_read_byte_data(client, reg);
 343 }
 344
 345 static inline int
 346 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
 347 {
 348         return i2c_smbus_write_byte_data(client, reg, value);
 349 }
 350
 351 /* following are the sysfs callback functions */
 352 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 353                         char *buf)
 354 {
 355         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 356         int nr = sensor_attr->index;
 357         struct w83792d_data *data = w83792d_update_device(dev);
 358         return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
 359 }
 360
 361 #define show_in_reg(reg) \
 362 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 363                         char *buf) \
 364 { \
 365         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 366         int nr = sensor_attr->index; \
 367         struct w83792d_data *data = w83792d_update_device(dev); \
 368         return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
 369 }
 370
 371 show_in_reg(in_min);
 372 show_in_reg(in_max);
 373
 374 #define store_in_reg(REG, reg) \
 375 static ssize_t store_in_##reg (struct device *dev, \
 376                                 struct device_attribute *attr, \
 377                                 const char *buf, size_t count) \
 378 { \
 379         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 380         int nr = sensor_attr->index; \
 381         struct i2c_client *client = to_i2c_client(dev); \
 382         struct w83792d_data *data = i2c_get_clientdata(client); \
 383         u32 val; \
 384          \
 385         val = simple_strtoul(buf, NULL, 10); \
 386         mutex_lock(&data->update_lock); \
 387         data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
 388         w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
 389         mutex_unlock(&data->update_lock); \
 390          \
 391         return count; \
 392 }
 393 store_in_reg(MIN, min);
 394 store_in_reg(MAX, max);
 395
 396 #define show_fan_reg(reg) \
 397 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
 398                         char *buf) \
 399 { \
 400         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 401         int nr = sensor_attr->index - 1; \
 402         struct w83792d_data *data = w83792d_update_device(dev); \
 403         return sprintf(buf,"%d\n", \
 404                 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 405 }
 406
 407 show_fan_reg(fan);
 408 show_fan_reg(fan_min);
 409
 410 static ssize_t
 411 store_fan_min(struct device *dev, struct device_attribute *attr,
 412                 const char *buf, size_t count)
 413 {
 414         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 415         int nr = sensor_attr->index - 1;
 416         struct i2c_client *client = to_i2c_client(dev);
 417         struct w83792d_data *data = i2c_get_clientdata(client);
 418         u32 val;
 419
 420         val = simple_strtoul(buf, NULL, 10);
 421         mutex_lock(&data->update_lock);
 422         data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 423         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
 424                                 data->fan_min[nr]);
 425         mutex_unlock(&data->update_lock);
 426
 427         return count;
 428 }
 429
 430 static ssize_t
 431 show_fan_div(struct device *dev, struct device_attribute *attr,
 432                 char *buf)
 433 {
 434         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 435         int nr = sensor_attr->index;
 436         struct w83792d_data *data = w83792d_update_device(dev);
 437         return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
 438 }
 439
 440 /* Note: we save and restore the fan minimum here, because its value is
 441    determined in part by the fan divisor.  This follows the principle of
 442    least surprise; the user doesn't expect the fan minimum to change just
 443    because the divisor changed. */
 444 static ssize_t
 445 store_fan_div(struct device *dev, struct device_attribute *attr,
 446                 const char *buf, size_t count)
 447 {
 448         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 449         int nr = sensor_attr->index - 1;
 450         struct i2c_client *client = to_i2c_client(dev);
 451         struct w83792d_data *data = i2c_get_clientdata(client);
 452         unsigned long min;
 453         /*u8 reg;*/
 454         u8 fan_div_reg = 0;
 455         u8 tmp_fan_div;
 456
 457         /* Save fan_min */
 458         mutex_lock(&data->update_lock);
 459         min = FAN_FROM_REG(data->fan_min[nr],
 460                            DIV_FROM_REG(data->fan_div[nr]));
 461
 462         data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
 463
 464         fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
 465         fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
 466         tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
 467                                         : ((data->fan_div[nr]) & 0x07);
 468         w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
 469                                         fan_div_reg | tmp_fan_div);
 470
 471         /* Restore fan_min */
 472         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 473         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
 474         mutex_unlock(&data->update_lock);
 475
 476         return count;
 477 }
 478
 479 /* read/write the temperature1, includes measured value and limits */
 480
 481 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
 482                                 char *buf)
 483 {
 484         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 485         int nr = sensor_attr->index;
 486         struct w83792d_data *data = w83792d_update_device(dev);
 487         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
 488 }
 489
 490 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 491                                 const char *buf, size_t count)
 492 {
 493         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 494         int nr = sensor_attr->index;
 495         struct i2c_client *client = to_i2c_client(dev);
 496         struct w83792d_data *data = i2c_get_clientdata(client);
 497         s32 val;
 498
 499         val = simple_strtol(buf, NULL, 10);
 500         mutex_lock(&data->update_lock);
 501         data->temp1[nr] = TEMP1_TO_REG(val);
 502         w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 503                 data->temp1[nr]);
 504         mutex_unlock(&data->update_lock);
 505
 506         return count;
 507 }
 508
 509 /* read/write the temperature2-3, includes measured value and limits */
 510
 511 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
 512                                 char *buf)
 513 {
 514         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 515         int nr = sensor_attr->nr;
 516         int index = sensor_attr->index;
 517         struct w83792d_data *data = w83792d_update_device(dev);
 518         return sprintf(buf,"%ld\n",
 519                 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
 520                         data->temp_add[nr][index+1]));
 521 }
 522
 523 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 524                                 const char *buf, size_t count)
 525 {
 526         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 527         int nr = sensor_attr->nr;
 528         int index = sensor_attr->index;
 529         struct i2c_client *client = to_i2c_client(dev);
 530         struct w83792d_data *data = i2c_get_clientdata(client);
 531         s32 val;
 532
 533         val = simple_strtol(buf, NULL, 10);
 534         mutex_lock(&data->update_lock);
 535         data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 536         data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 537         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 538                 data->temp_add[nr][index]);
 539         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 540                 data->temp_add[nr][index+1]);
 541         mutex_unlock(&data->update_lock);
 542
 543         return count;
 544 }
 545
 546 /* get reatime status of all sensors items: voltage, temp, fan */
 547 static ssize_t
 548 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
 549 {
 550         struct w83792d_data *data = w83792d_update_device(dev);
 551         return sprintf(buf, "%d\n", data->alarms);
 552 }
 553
 554 static ssize_t show_alarm(struct device *dev,
 555                           struct device_attribute *attr, char *buf)
 556 {
 557         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 558         int nr = sensor_attr->index;
 559         struct w83792d_data *data = w83792d_update_device(dev);
 560         return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
 561 }
 562
 563 static ssize_t
 564 show_pwm(struct device *dev, struct device_attribute *attr,
 565                 char *buf)
 566 {
 567         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 568         int nr = sensor_attr->index;
 569         struct w83792d_data *data = w83792d_update_device(dev);
 570         return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 571 }
 572
 573 static ssize_t
 574 show_pwmenable(struct device *dev, struct device_attribute *attr,
 575                         char *buf)
 576 {
 577         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 578         int nr = sensor_attr->index - 1;
 579         struct w83792d_data *data = w83792d_update_device(dev);
 580         long pwm_enable_tmp = 1;
 581
 582         switch (data->pwmenable[nr]) {
 583         case 0:
 584                 pwm_enable_tmp = 1; /* manual mode */
 585                 break;
 586         case 1:
 587                 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
 588                 break;
 589         case 2:
 590                 pwm_enable_tmp = 2; /* Smart Fan II */
 591                 break;
 592         }
 593
 594         return sprintf(buf, "%ld\n", pwm_enable_tmp);
 595 }
 596
 597 static ssize_t
 598 store_pwm(struct device *dev, struct device_attribute *attr,
 599                 const char *buf, size_t count)
 600 {
 601         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 602         int nr = sensor_attr->index;
 603         struct i2c_client *client = to_i2c_client(dev);
 604         struct w83792d_data *data = i2c_get_clientdata(client);
 605         u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255) >> 4;
 606
 607         mutex_lock(&data->update_lock);
 608         val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
 609         data->pwm[nr] = val;
 610         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 611         mutex_unlock(&data->update_lock);
 612
 613         return count;
 614 }
 615
 616 static ssize_t
 617 store_pwmenable(struct device *dev, struct device_attribute *attr,
 618                         const char *buf, size_t count)
 619 {
 620         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 621         int nr = sensor_attr->index - 1;
 622         struct i2c_client *client = to_i2c_client(dev);
 623         struct w83792d_data *data = i2c_get_clientdata(client);
 624         u32 val;
 625         u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 626
 627         val = simple_strtoul(buf, NULL, 10);
 628         if (val < 1 || val > 3)
 629                 return -EINVAL;
 630
 631         mutex_lock(&data->update_lock);
 632         switch (val) {
 633         case 1:
 634                 data->pwmenable[nr] = 0; /* manual mode */
 635                 break;
 636         case 2:
 637                 data->pwmenable[nr] = 2; /* Smart Fan II */
 638                 break;
 639         case 3:
 640                 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 641                 break;
 642         }
 643         cfg1_tmp = data->pwmenable[0];
 644         cfg2_tmp = (data->pwmenable[1]) << 2;
 645         cfg3_tmp = (data->pwmenable[2]) << 4;
 646         cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
 647         fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 648         w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
 649         mutex_unlock(&data->update_lock);
 650
 651         return count;
 652 }
 653
 654 static ssize_t
 655 show_pwm_mode(struct device *dev, struct device_attribute *attr,
 656                         char *buf)
 657 {
 658         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 659         int nr = sensor_attr->index;
 660         struct w83792d_data *data = w83792d_update_device(dev);
 661         return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 662 }
 663
 664 static ssize_t
 665 store_pwm_mode(struct device *dev, struct device_attribute *attr,
 666                         const char *buf, size_t count)
 667 {
 668         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 669         int nr = sensor_attr->index;
 670         struct i2c_client *client = to_i2c_client(dev);
 671         struct w83792d_data *data = i2c_get_clientdata(client);
 672         u32 val;
 673
 674         val = simple_strtoul(buf, NULL, 10);
 675         if (val != 0 && val != 1)
 676                 return -EINVAL;
 677
 678         mutex_lock(&data->update_lock);
 679         data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
 680         if (val) {                      /* PWM mode */
 681                 data->pwm[nr] |= 0x80;
 682         } else {                        /* DC mode */
 683                 data->pwm[nr] &= 0x7f;
 684         }
 685         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 686         mutex_unlock(&data->update_lock);
 687
 688         return count;
 689 }
 690
 691 static ssize_t
 692 show_regs_chassis(struct device *dev, struct device_attribute *attr,
 693                         char *buf)
 694 {
 695         struct w83792d_data *data = w83792d_update_device(dev);
 696         return sprintf(buf, "%d\n", data->chassis);
 697 }
 698
 699 static ssize_t
 700 show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
 701 {
 702         struct w83792d_data *data = w83792d_update_device(dev);
 703         return sprintf(buf, "%d\n", data->chassis_clear);
 704 }
 705
 706 static ssize_t
 707 store_chassis_clear(struct device *dev, struct device_attribute *attr,
 708                         const char *buf, size_t count)
 709 {
 710         struct i2c_client *client = to_i2c_client(dev);
 711         struct w83792d_data *data = i2c_get_clientdata(client);
 712         u32 val;
 713         u8 temp1 = 0, temp2 = 0;
 714
 715         val = simple_strtoul(buf, NULL, 10);
 716         mutex_lock(&data->update_lock);
 717         data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
 718         temp1 = ((data->chassis_clear) << 7) & 0x80;
 719         temp2 = w83792d_read_value(client,
 720                 W83792D_REG_CHASSIS_CLR) & 0x7f;
 721         w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
 722         mutex_unlock(&data->update_lock);
 723
 724         return count;
 725 }
 726
 727 /* For Smart Fan I / Thermal Cruise */
 728 static ssize_t
 729 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 730                         char *buf)
 731 {
 732         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 733         int nr = sensor_attr->index;
 734         struct w83792d_data *data = w83792d_update_device(dev);
 735         return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 736 }
 737
 738 static ssize_t
 739 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 740                         const char *buf, size_t count)
 741 {
 742         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 743         int nr = sensor_attr->index - 1;
 744         struct i2c_client *client = to_i2c_client(dev);
 745         struct w83792d_data *data = i2c_get_clientdata(client);
 746         u32 val;
 747         u8 target_tmp=0, target_mask=0;
 748
 749         val = simple_strtoul(buf, NULL, 10);
 750         target_tmp = val;
 751         target_tmp = target_tmp & 0x7f;
 752         mutex_lock(&data->update_lock);
 753         target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
 754         data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
 755         w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 756                 (data->thermal_cruise[nr]) | target_mask);
 757         mutex_unlock(&data->update_lock);
 758
 759         return count;
 760 }
 761
 762 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
 763 static ssize_t
 764 show_tolerance(struct device *dev, struct device_attribute *attr,
 765                 char *buf)
 766 {
 767         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 768         int nr = sensor_attr->index;
 769         struct w83792d_data *data = w83792d_update_device(dev);
 770         return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 771 }
 772
 773 static ssize_t
 774 store_tolerance(struct device *dev, struct device_attribute *attr,
 775                 const char *buf, size_t count)
 776 {
 777         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 778         int nr = sensor_attr->index - 1;
 779         struct i2c_client *client = to_i2c_client(dev);
 780         struct w83792d_data *data = i2c_get_clientdata(client);
 781         u32 val;
 782         u8 tol_tmp, tol_mask;
 783
 784         val = simple_strtoul(buf, NULL, 10);
 785         mutex_lock(&data->update_lock);
 786         tol_mask = w83792d_read_value(client,
 787                 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 788         tol_tmp = SENSORS_LIMIT(val, 0, 15);
 789         tol_tmp &= 0x0f;
 790         data->tolerance[nr] = tol_tmp;
 791         if (nr == 1) {
 792                 tol_tmp <<= 4;
 793         }
 794         w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 795                 tol_mask | tol_tmp);
 796         mutex_unlock(&data->update_lock);
 797
 798         return count;
 799 }
 800
 801 /* For Smart Fan II */
 802 static ssize_t
 803 show_sf2_point(struct device *dev, struct device_attribute *attr,
 804                 char *buf)
 805 {
 806         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 807         int nr = sensor_attr->nr;
 808         int index = sensor_attr->index;
 809         struct w83792d_data *data = w83792d_update_device(dev);
 810         return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 811 }
 812
 813 static ssize_t
 814 store_sf2_point(struct device *dev, struct device_attribute *attr,
 815                 const char *buf, size_t count)
 816 {
 817         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 818         int nr = sensor_attr->nr - 1;
 819         int index = sensor_attr->index - 1;
 820         struct i2c_client *client = to_i2c_client(dev);
 821         struct w83792d_data *data = i2c_get_clientdata(client);
 822         u32 val;
 823         u8 mask_tmp = 0;
 824
 825         val = simple_strtoul(buf, NULL, 10);
 826         mutex_lock(&data->update_lock);
 827         data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
 828         mask_tmp = w83792d_read_value(client,
 829                                         W83792D_REG_POINTS[index][nr]) & 0x80;
 830         w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 831                 mask_tmp|data->sf2_points[index][nr]);
 832         mutex_unlock(&data->update_lock);
 833
 834         return count;
 835 }
 836
 837 static ssize_t
 838 show_sf2_level(struct device *dev, struct device_attribute *attr,
 839                 char *buf)
 840 {
 841         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 842         int nr = sensor_attr->nr;
 843         int index = sensor_attr->index;
 844         struct w83792d_data *data = w83792d_update_device(dev);
 845         return sprintf(buf, "%d\n",
 846                         (((data->sf2_levels[index-1][nr]) * 100) / 15));
 847 }
 848
 849 static ssize_t
 850 store_sf2_level(struct device *dev, struct device_attribute *attr,
 851                 const char *buf, size_t count)
 852 {
 853         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 854         int nr = sensor_attr->nr;
 855         int index = sensor_attr->index - 1;
 856         struct i2c_client *client = to_i2c_client(dev);
 857         struct w83792d_data *data = i2c_get_clientdata(client);
 858         u32 val;
 859         u8 mask_tmp=0, level_tmp=0;
 860
 861         val = simple_strtoul(buf, NULL, 10);
 862         mutex_lock(&data->update_lock);
 863         data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
 864         mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 865                 & ((nr==3) ? 0xf0 : 0x0f);
 866         if (nr==3) {
 867                 level_tmp = data->sf2_levels[index][nr];
 868         } else {
 869                 level_tmp = data->sf2_levels[index][nr] << 4;
 870         }
 871         w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
 872         mutex_unlock(&data->update_lock);
 873
 874         return count;
 875 }
 876
 877
 878 static int
 879 w83792d_detect_subclients(struct i2c_client *new_client)
 880 {
 881         int i, id, err;
 882         int address = new_client->addr;
 883         u8 val;
 884         struct i2c_adapter *adapter = new_client->adapter;
 885         struct w83792d_data *data = i2c_get_clientdata(new_client);
 886
 887         id = i2c_adapter_id(adapter);
 888         if (force_subclients[0] == id && force_subclients[1] == address) {
 889                 for (i = 2; i <= 3; i++) {
 890                         if (force_subclients[i] < 0x48 ||
 891                             force_subclients[i] > 0x4f) {
 892                                 dev_err(&new_client->dev, "invalid subclient "
 893                                         "address %d; must be 0x48-0x4f\n",
 894                                         force_subclients[i]);
 895                                 err = -ENODEV;
 896                                 goto ERROR_SC_0;
 897                         }
 898                 }
 899                 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
 900                                         (force_subclients[2] & 0x07) |
 901                                         ((force_subclients[3] & 0x07) << 4));
 902         }
 903
 904         val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
 905         if (!(val & 0x08)) {
 906                 data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
 907         }
 908         if (!(val & 0x80)) {
 909                 if ((data->lm75[0] != NULL) &&
 910                         ((val & 0x7) == ((val >> 4) & 0x7))) {
 911                         dev_err(&new_client->dev, "duplicate addresses 0x%x, "
 912                                 "use force_subclient\n", data->lm75[0]->addr);
 913                         err = -ENODEV;
 914                         goto ERROR_SC_1;
 915                 }
 916                 data->lm75[1] = i2c_new_dummy(adapter,
 917                                               0x48 + ((val >> 4) & 0x7));
 918         }
 919
 920         return 0;
 921
 922 /* Undo inits in case of errors */
 923
 924 ERROR_SC_1:
 925         if (data->lm75[0] != NULL)
 926                 i2c_unregister_device(data->lm75[0]);
 927 ERROR_SC_0:
 928         return err;
 929 }
 930
 931 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 932 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 933 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 934 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 935 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
 936 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
 937 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
 938 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
 939 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
 940 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
 941                         show_in_min, store_in_min, 0);
 942 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
 943                         show_in_min, store_in_min, 1);
 944 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
 945                         show_in_min, store_in_min, 2);
 946 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
 947                         show_in_min, store_in_min, 3);
 948 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
 949                         show_in_min, store_in_min, 4);
 950 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
 951                         show_in_min, store_in_min, 5);
 952 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
 953                         show_in_min, store_in_min, 6);
 954 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
 955                         show_in_min, store_in_min, 7);
 956 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
 957                         show_in_min, store_in_min, 8);
 958 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
 959                         show_in_max, store_in_max, 0);
 960 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
 961                         show_in_max, store_in_max, 1);
 962 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
 963                         show_in_max, store_in_max, 2);
 964 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
 965                         show_in_max, store_in_max, 3);
 966 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
 967                         show_in_max, store_in_max, 4);
 968 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
 969                         show_in_max, store_in_max, 5);
 970 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
 971                         show_in_max, store_in_max, 6);
 972 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
 973                         show_in_max, store_in_max, 7);
 974 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
 975                         show_in_max, store_in_max, 8);
 976 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
 977 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
 978 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
 979 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
 980                         show_temp1, store_temp1, 0, 1);
 981 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
 982                         store_temp23, 0, 2);
 983 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
 984                         store_temp23, 1, 2);
 985 static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
 986                         show_temp1, store_temp1, 0, 2);
 987 static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
 988                         show_temp23, store_temp23, 0, 4);
 989 static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
 990                         show_temp23, store_temp23, 1, 4);
 991 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
 992 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
 993 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
 994 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
 995 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
 996 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
 997 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
 998 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
 999 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1000 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1001 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1002 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1003 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1004 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1005 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1006 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1007 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1008 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1009 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1010 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1011 static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
1012 static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
1013                         show_chassis_clear, store_chassis_clear);
1014 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1015 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1016 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1017 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1018                         show_pwmenable, store_pwmenable, 1);
1019 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1020                         show_pwmenable, store_pwmenable, 2);
1021 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1022                         show_pwmenable, store_pwmenable, 3);
1023 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1024                         show_pwm_mode, store_pwm_mode, 0);
1025 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1026                         show_pwm_mode, store_pwm_mode, 1);
1027 static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1028                         show_pwm_mode, store_pwm_mode, 2);
1029 static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1030                         show_tolerance, store_tolerance, 1);
1031 static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1032                         show_tolerance, store_tolerance, 2);
1033 static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1034                         show_tolerance, store_tolerance, 3);
1035 static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1036                         show_thermal_cruise, store_thermal_cruise, 1);
1037 static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1038                         show_thermal_cruise, store_thermal_cruise, 2);
1039 static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1040                         show_thermal_cruise, store_thermal_cruise, 3);
1041 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1042                         show_sf2_point, store_sf2_point, 1, 1);
1043 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1044                         show_sf2_point, store_sf2_point, 2, 1);
1045 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1046                         show_sf2_point, store_sf2_point, 3, 1);
1047 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1048                         show_sf2_point, store_sf2_point, 4, 1);
1049 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1050                         show_sf2_point, store_sf2_point, 1, 2);
1051 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1052                         show_sf2_point, store_sf2_point, 2, 2);
1053 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1054                         show_sf2_point, store_sf2_point, 3, 2);
1055 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1056                         show_sf2_point, store_sf2_point, 4, 2);
1057 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1058                         show_sf2_point, store_sf2_point, 1, 3);
1059 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1060                         show_sf2_point, store_sf2_point, 2, 3);
1061 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1062                         show_sf2_point, store_sf2_point, 3, 3);
1063 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1064                         show_sf2_point, store_sf2_point, 4, 3);
1065 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1066                         show_sf2_level, store_sf2_level, 1, 1);
1067 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1068                         show_sf2_level, store_sf2_level, 2, 1);
1069 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1070                         show_sf2_level, store_sf2_level, 3, 1);
1071 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1072                         show_sf2_level, store_sf2_level, 1, 2);
1073 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1074                         show_sf2_level, store_sf2_level, 2, 2);
1075 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1076                         show_sf2_level, store_sf2_level, 3, 2);
1077 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1078                         show_sf2_level, store_sf2_level, 1, 3);
1079 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1080                         show_sf2_level, store_sf2_level, 2, 3);
1081 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1082                         show_sf2_level, store_sf2_level, 3, 3);
1083 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1084 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1085 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1086 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1087 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1088 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1089 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1090 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1091                         show_fan_min, store_fan_min, 1);
1092 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1093                         show_fan_min, store_fan_min, 2);
1094 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1095                         show_fan_min, store_fan_min, 3);
1096 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1097                         show_fan_min, store_fan_min, 4);
1098 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1099                         show_fan_min, store_fan_min, 5);
1100 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1101                         show_fan_min, store_fan_min, 6);
1102 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1103                         show_fan_min, store_fan_min, 7);
1104 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1105                         show_fan_div, store_fan_div, 1);
1106 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1107                         show_fan_div, store_fan_div, 2);
1108 static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1109                         show_fan_div, store_fan_div, 3);
1110 static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1111                         show_fan_div, store_fan_div, 4);
1112 static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1113                         show_fan_div, store_fan_div, 5);
1114 static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1115                         show_fan_div, store_fan_div, 6);
1116 static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1117                         show_fan_div, store_fan_div, 7);
1118
1119 static struct attribute *w83792d_attributes_fan[4][5] = {
1120         {
1121                 &sensor_dev_attr_fan4_input.dev_attr.attr,
1122                 &sensor_dev_attr_fan4_min.dev_attr.attr,
1123                 &sensor_dev_attr_fan4_div.dev_attr.attr,
1124                 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1125                 NULL
1126         }, {
1127                 &sensor_dev_attr_fan5_input.dev_attr.attr,
1128                 &sensor_dev_attr_fan5_min.dev_attr.attr,
1129                 &sensor_dev_attr_fan5_div.dev_attr.attr,
1130                 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1131                 NULL
1132         }, {
1133                 &sensor_dev_attr_fan6_input.dev_attr.attr,
1134                 &sensor_dev_attr_fan6_min.dev_attr.attr,
1135                 &sensor_dev_attr_fan6_div.dev_attr.attr,
1136                 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1137                 NULL
1138         }, {
1139                 &sensor_dev_attr_fan7_input.dev_attr.attr,
1140                 &sensor_dev_attr_fan7_min.dev_attr.attr,
1141                 &sensor_dev_attr_fan7_div.dev_attr.attr,
1142                 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1143                 NULL
1144         }
1145 };
1146
1147 static const struct attribute_group w83792d_group_fan[4] = {
1148         { .attrs = w83792d_attributes_fan[0] },
1149         { .attrs = w83792d_attributes_fan[1] },
1150         { .attrs = w83792d_attributes_fan[2] },
1151         { .attrs = w83792d_attributes_fan[3] },
1152 };
1153
1154 static struct attribute *w83792d_attributes[] = {
1155         &sensor_dev_attr_in0_input.dev_attr.attr,
1156         &sensor_dev_attr_in0_max.dev_attr.attr,
1157         &sensor_dev_attr_in0_min.dev_attr.attr,
1158         &sensor_dev_attr_in1_input.dev_attr.attr,
1159         &sensor_dev_attr_in1_max.dev_attr.attr,
1160         &sensor_dev_attr_in1_min.dev_attr.attr,
1161         &sensor_dev_attr_in2_input.dev_attr.attr,
1162         &sensor_dev_attr_in2_max.dev_attr.attr,
1163         &sensor_dev_attr_in2_min.dev_attr.attr,
1164         &sensor_dev_attr_in3_input.dev_attr.attr,
1165         &sensor_dev_attr_in3_max.dev_attr.attr,
1166         &sensor_dev_attr_in3_min.dev_attr.attr,
1167         &sensor_dev_attr_in4_input.dev_attr.attr,
1168         &sensor_dev_attr_in4_max.dev_attr.attr,
1169         &sensor_dev_attr_in4_min.dev_attr.attr,
1170         &sensor_dev_attr_in5_input.dev_attr.attr,
1171         &sensor_dev_attr_in5_max.dev_attr.attr,
1172         &sensor_dev_attr_in5_min.dev_attr.attr,
1173         &sensor_dev_attr_in6_input.dev_attr.attr,
1174         &sensor_dev_attr_in6_max.dev_attr.attr,
1175         &sensor_dev_attr_in6_min.dev_attr.attr,
1176         &sensor_dev_attr_in7_input.dev_attr.attr,
1177         &sensor_dev_attr_in7_max.dev_attr.attr,
1178         &sensor_dev_attr_in7_min.dev_attr.attr,
1179         &sensor_dev_attr_in8_input.dev_attr.attr,
1180         &sensor_dev_attr_in8_max.dev_attr.attr,
1181         &sensor_dev_attr_in8_min.dev_attr.attr,
1182         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1183         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1184         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1185         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1186         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1187         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1188         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1189         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1190         &sensor_dev_attr_in8_alarm.dev_attr.attr,
1191         &sensor_dev_attr_temp1_input.dev_attr.attr,
1192         &sensor_dev_attr_temp1_max.dev_attr.attr,
1193         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1194         &sensor_dev_attr_temp2_input.dev_attr.attr,
1195         &sensor_dev_attr_temp2_max.dev_attr.attr,
1196         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1197         &sensor_dev_attr_temp3_input.dev_attr.attr,
1198         &sensor_dev_attr_temp3_max.dev_attr.attr,
1199         &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1200         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1201         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1202         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1203         &sensor_dev_attr_pwm1.dev_attr.attr,
1204         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1205         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1206         &sensor_dev_attr_pwm2.dev_attr.attr,
1207         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1208         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1209         &sensor_dev_attr_pwm3.dev_attr.attr,
1210         &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1211         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1212         &dev_attr_alarms.attr,
1213         &dev_attr_chassis.attr,
1214         &dev_attr_chassis_clear.attr,
1215         &sensor_dev_attr_tolerance1.dev_attr.attr,
1216         &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1217         &sensor_dev_attr_tolerance2.dev_attr.attr,
1218         &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1219         &sensor_dev_attr_tolerance3.dev_attr.attr,
1220         &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1221         &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1222         &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1223         &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1224         &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1225         &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1226         &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1227         &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1228         &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1229         &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1230         &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1231         &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1232         &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1233         &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1234         &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1235         &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1236         &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1237         &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1238         &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1239         &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1240         &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1241         &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1242         &sensor_dev_attr_fan1_input.dev_attr.attr,
1243         &sensor_dev_attr_fan1_min.dev_attr.attr,
1244         &sensor_dev_attr_fan1_div.dev_attr.attr,
1245         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1246         &sensor_dev_attr_fan2_input.dev_attr.attr,
1247         &sensor_dev_attr_fan2_min.dev_attr.attr,
1248         &sensor_dev_attr_fan2_div.dev_attr.attr,
1249         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1250         &sensor_dev_attr_fan3_input.dev_attr.attr,
1251         &sensor_dev_attr_fan3_min.dev_attr.attr,
1252         &sensor_dev_attr_fan3_div.dev_attr.attr,
1253         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1254         NULL
1255 };
1256
1257 static const struct attribute_group w83792d_group = {
1258         .attrs = w83792d_attributes,
1259 };
1260
1261 /* Return 0 if detection is successful, -ENODEV otherwise */
1262 static int
1263 w83792d_detect(struct i2c_client *client, int kind, struct i2c_board_info *info)
1264 {
1265         struct i2c_adapter *adapter = client->adapter;
1266         int val1, val2;
1267         unsigned short address = client->addr;
1268
1269         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1270                 return -ENODEV;
1271         }
1272
1273         /* The w83792d may be stuck in some other bank than bank 0. This may
1274            make reading other information impossible. Specify a force=... or
1275            force_*=... parameter, and the Winbond will be reset to the right
1276            bank. */
1277         if (kind < 0) {
1278                 if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80) {
1279                         return -ENODEV;
1280                 }
1281                 val1 = w83792d_read_value(client, W83792D_REG_BANK);
1282                 val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1283                 /* Check for Winbond ID if in bank 0 */
1284                 if (!(val1 & 0x07)) {  /* is Bank0 */
1285                         if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
1286                              ((val1 & 0x80) && (val2 != 0x5c))) {
1287                                 return -ENODEV;
1288                         }
1289                 }
1290                 /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1291                    should match */
1292                 if (w83792d_read_value(client,
1293                                         W83792D_REG_I2C_ADDR) != address) {
1294                         return -ENODEV;
1295                 }
1296         }
1297
1298         /* We have either had a force parameter, or we have already detected the
1299            Winbond. Put it now into bank 0 and Vendor ID High Byte */
1300         w83792d_write_value(client,
1301                             W83792D_REG_BANK,
1302                             (w83792d_read_value(client,
1303                                 W83792D_REG_BANK) & 0x78) | 0x80);
1304
1305         /* Determine the chip type. */
1306         if (kind <= 0) {
1307                 /* get vendor ID */
1308                 val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1309                 if (val2 != 0x5c) {  /* the vendor is NOT Winbond */
1310                         return -ENODEV;
1311                 }
1312                 val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1313                 if (val1 == 0x7a) {
1314                         kind = w83792d;
1315                 } else {
1316                         if (kind == 0)
1317                                 dev_warn(&adapter->dev,
1318                                         "w83792d: Ignoring 'force' parameter for"
1319                                         " unknown chip at adapter %d, address"
1320                                         " 0x%02x\n", i2c_adapter_id(adapter),
1321                                         address);
1322                         return -ENODEV;
1323                 }
1324         }
1325
1326         strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
1327
1328         return 0;
1329 }
1330
1331 static int
1332 w83792d_probe(struct i2c_client *client, const struct i2c_device_id *id)
1333 {
1334         struct w83792d_data *data;
1335         struct device *dev = &client->dev;
1336         int i, val1, err;
1337
1338         data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL);
1339         if (!data) {
1340                 err = -ENOMEM;
1341                 goto ERROR0;
1342         }
1343
1344         i2c_set_clientdata(client, data);
1345         data->valid = 0;
1346         mutex_init(&data->update_lock);
1347
1348         err = w83792d_detect_subclients(client);
1349         if (err)
1350                 goto ERROR1;
1351
1352         /* Initialize the chip */
1353         w83792d_init_client(client);
1354
1355         /* A few vars need to be filled upon startup */
1356         for (i = 0; i < 7; i++) {
1357                 data->fan_min[i] = w83792d_read_value(client,
1358                                         W83792D_REG_FAN_MIN[i]);
1359         }
1360
1361         /* Register sysfs hooks */
1362         if ((err = sysfs_create_group(&dev->kobj, &w83792d_group)))
1363                 goto ERROR3;
1364
1365         /* Read GPIO enable register to check if pins for fan 4,5 are used as
1366            GPIO */
1367         val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1368
1369         if (!(val1 & 0x40))
1370                 if ((err = sysfs_create_group(&dev->kobj,
1371                                               &w83792d_group_fan[0])))
1372                         goto exit_remove_files;
1373
1374         if (!(val1 & 0x20))
1375                 if ((err = sysfs_create_group(&dev->kobj,
1376                                               &w83792d_group_fan[1])))
1377                         goto exit_remove_files;
1378
1379         val1 = w83792d_read_value(client, W83792D_REG_PIN);
1380         if (val1 & 0x40)
1381                 if ((err = sysfs_create_group(&dev->kobj,
1382                                               &w83792d_group_fan[2])))
1383                         goto exit_remove_files;
1384
1385         if (val1 & 0x04)
1386                 if ((err = sysfs_create_group(&dev->kobj,
1387                                               &w83792d_group_fan[3])))
1388                         goto exit_remove_files;
1389
1390         data->hwmon_dev = hwmon_device_register(dev);
1391         if (IS_ERR(data->hwmon_dev)) {
1392                 err = PTR_ERR(data->hwmon_dev);
1393                 goto exit_remove_files;
1394         }
1395
1396         return 0;
1397
1398 exit_remove_files:
1399         sysfs_remove_group(&dev->kobj, &w83792d_group);
1400         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1401                 sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1402 ERROR3:
1403         if (data->lm75[0] != NULL)
1404                 i2c_unregister_device(data->lm75[0]);
1405         if (data->lm75[1] != NULL)
1406                 i2c_unregister_device(data->lm75[1]);
1407 ERROR1:
1408         kfree(data);
1409 ERROR0:
1410         return err;
1411 }
1412
1413 static int
1414 w83792d_remove(struct i2c_client *client)
1415 {
1416         struct w83792d_data *data = i2c_get_clientdata(client);
1417         int i;
1418
1419         hwmon_device_unregister(data->hwmon_dev);
1420         sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1421         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1422                 sysfs_remove_group(&client->dev.kobj,
1423                                    &w83792d_group_fan[i]);
1424
1425         if (data->lm75[0] != NULL)
1426                 i2c_unregister_device(data->lm75[0]);
1427         if (data->lm75[1] != NULL)
1428                 i2c_unregister_device(data->lm75[1]);
1429
1430         kfree(data);
1431         return 0;
1432 }
1433
1434 static void
1435 w83792d_init_client(struct i2c_client *client)
1436 {
1437         u8 temp2_cfg, temp3_cfg, vid_in_b;
1438
1439         if (init) {
1440                 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1441         }
1442         /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1443            W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1444              vin0/vin1 can be modified by user;
1445            W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1446              vin0/vin1 auto-updated, can NOT be modified by user. */
1447         vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1448         w83792d_write_value(client, W83792D_REG_VID_IN_B,
1449                             vid_in_b & 0xbf);
1450
1451         temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1452         temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1453         w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1454                                 temp2_cfg & 0xe6);
1455         w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1456                                 temp3_cfg & 0xe6);
1457
1458         /* Start monitoring */
1459         w83792d_write_value(client, W83792D_REG_CONFIG,
1460                             (w83792d_read_value(client,
1461                                                 W83792D_REG_CONFIG) & 0xf7)
1462                             | 0x01);
1463 }
1464
1465 static struct w83792d_data *w83792d_update_device(struct device *dev)
1466 {
1467         struct i2c_client *client = to_i2c_client(dev);
1468         struct w83792d_data *data = i2c_get_clientdata(client);
1469         int i, j;
1470         u8 reg_array_tmp[4], reg_tmp;
1471
1472         mutex_lock(&data->update_lock);
1473
1474         if (time_after
1475             (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1476             || time_before(jiffies, data->last_updated) || !data->valid) {
1477                 dev_dbg(dev, "Starting device update\n");
1478
1479                 /* Update the voltages measured value and limits */
1480                 for (i = 0; i < 9; i++) {
1481                         data->in[i] = w83792d_read_value(client,
1482                                                 W83792D_REG_IN[i]);
1483                         data->in_max[i] = w83792d_read_value(client,
1484                                                 W83792D_REG_IN_MAX[i]);
1485                         data->in_min[i] = w83792d_read_value(client,
1486                                                 W83792D_REG_IN_MIN[i]);
1487                 }
1488                 data->low_bits = w83792d_read_value(client,
1489                                                 W83792D_REG_LOW_BITS1) +
1490                                  (w83792d_read_value(client,
1491                                                 W83792D_REG_LOW_BITS2) << 8);
1492                 for (i = 0; i < 7; i++) {
1493                         /* Update the Fan measured value and limits */
1494                         data->fan[i] = w83792d_read_value(client,
1495                                                 W83792D_REG_FAN[i]);
1496                         data->fan_min[i] = w83792d_read_value(client,
1497                                                 W83792D_REG_FAN_MIN[i]);
1498                         /* Update the PWM/DC Value and PWM/DC flag */
1499                         data->pwm[i] = w83792d_read_value(client,
1500                                                 W83792D_REG_PWM[i]);
1501                 }
1502
1503                 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1504                 data->pwmenable[0] = reg_tmp & 0x03;
1505                 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1506                 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1507
1508                 for (i = 0; i < 3; i++) {
1509                         data->temp1[i] = w83792d_read_value(client,
1510                                                         W83792D_REG_TEMP1[i]);
1511                 }
1512                 for (i = 0; i < 2; i++) {
1513                         for (j = 0; j < 6; j++) {
1514                                 data->temp_add[i][j] = w83792d_read_value(
1515                                         client,W83792D_REG_TEMP_ADD[i][j]);
1516                         }
1517                 }
1518
1519                 /* Update the Fan Divisor */
1520                 for (i = 0; i < 4; i++) {
1521                         reg_array_tmp[i] = w83792d_read_value(client,
1522                                                         W83792D_REG_FAN_DIV[i]);
1523                 }
1524                 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1525                 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1526                 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1527                 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1528                 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1529                 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1530                 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1531
1532                 /* Update the realtime status */
1533                 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1534                         (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1535                         (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1536
1537                 /* Update CaseOpen status and it's CLR_CHS. */
1538                 data->chassis = (w83792d_read_value(client,
1539                         W83792D_REG_CHASSIS) >> 5) & 0x01;
1540                 data->chassis_clear = (w83792d_read_value(client,
1541                         W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
1542
1543                 /* Update Thermal Cruise/Smart Fan I target value */
1544                 for (i = 0; i < 3; i++) {
1545                         data->thermal_cruise[i] =
1546                                 w83792d_read_value(client,
1547                                 W83792D_REG_THERMAL[i]) & 0x7f;
1548                 }
1549
1550                 /* Update Smart Fan I/II tolerance */
1551                 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1552                 data->tolerance[0] = reg_tmp & 0x0f;
1553                 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1554                 data->tolerance[2] = w83792d_read_value(client,
1555                                         W83792D_REG_TOLERANCE[2]) & 0x0f;
1556
1557                 /* Update Smart Fan II temperature points */
1558                 for (i = 0; i < 3; i++) {
1559                         for (j = 0; j < 4; j++) {
1560                                 data->sf2_points[i][j] = w83792d_read_value(
1561                                         client,W83792D_REG_POINTS[i][j]) & 0x7f;
1562                         }
1563                 }
1564
1565                 /* Update Smart Fan II duty cycle levels */
1566                 for (i = 0; i < 3; i++) {
1567                         reg_tmp = w83792d_read_value(client,
1568                                                 W83792D_REG_LEVELS[i][0]);
1569                         data->sf2_levels[i][0] = reg_tmp & 0x0f;
1570                         data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1571                         reg_tmp = w83792d_read_value(client,
1572                                                 W83792D_REG_LEVELS[i][2]);
1573                         data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1574                         data->sf2_levels[i][3] = reg_tmp & 0x0f;
1575                 }
1576
1577                 data->last_updated = jiffies;
1578                 data->valid = 1;
1579         }
1580
1581         mutex_unlock(&data->update_lock);
1582
1583 #ifdef DEBUG
1584         w83792d_print_debug(data, dev);
1585 #endif
1586
1587         return data;
1588 }
1589
1590 #ifdef DEBUG
1591 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1592 {
1593         int i=0, j=0;
1594         dev_dbg(dev, "==========The following is the debug message...========\n");
1595         dev_dbg(dev, "9 set of Voltages: =====>\n");
1596         for (i=0; i<9; i++) {
1597                 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1598                 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1599                 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1600         }
1601         dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1602         dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1603         dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1604         for (i=0; i<7; i++) {
1605                 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1606                 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1607                 dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1608         }
1609         dev_dbg(dev, "3 set of Temperatures: =====>\n");
1610         for (i=0; i<3; i++) {
1611                 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1612         }
1613
1614         for (i=0; i<2; i++) {
1615                 for (j=0; j<6; j++) {
1616                         dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1617                                                         data->temp_add[i][j]);
1618                 }
1619         }
1620
1621         for (i=0; i<7; i++) {
1622                 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1623         }
1624         dev_dbg(dev, "==========End of the debug message...==================\n");
1625         dev_dbg(dev, "\n");
1626 }
1627 #endif
1628
1629 static int __init
1630 sensors_w83792d_init(void)
1631 {
1632         return i2c_add_driver(&w83792d_driver);
1633 }
1634
1635 static void __exit
1636 sensors_w83792d_exit(void)
1637 {
1638         i2c_del_driver(&w83792d_driver);
1639 }
1640
1641 MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
1642 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1643 MODULE_LICENSE("GPL");
1644
1645 module_init(sensors_w83792d_init);
1646 module_exit(sensors_w83792d_exit);
1647