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
  54 static unsigned short force_subclients[4];
  55 module_param_array(force_subclients, short, NULL, 0);
  56 MODULE_PARM_DESC(force_subclients, "List of subclient addresses: "
  57                         "{bus, clientaddr, subclientaddr1, subclientaddr2}");
  58
  59 static int init;
  60 module_param(init, bool, 0);
  61 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
  62
  63 /* The W83792D registers */
  64 static const u8 W83792D_REG_IN[9] = {
  65         0x20,   /* Vcore A in DataSheet */
  66         0x21,   /* Vcore B in DataSheet */
  67         0x22,   /* VIN0 in DataSheet */
  68         0x23,   /* VIN1 in DataSheet */
  69         0x24,   /* VIN2 in DataSheet */
  70         0x25,   /* VIN3 in DataSheet */
  71         0x26,   /* 5VCC in DataSheet */
  72         0xB0,   /* 5VSB in DataSheet */
  73         0xB1    /* VBAT in DataSheet */
  74 };
  75 #define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
  76 #define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
  77 static const u8 W83792D_REG_IN_MAX[9] = {
  78         0x2B,   /* Vcore A High Limit in DataSheet */
  79         0x2D,   /* Vcore B High Limit in DataSheet */
  80         0x2F,   /* VIN0 High Limit in DataSheet */
  81         0x31,   /* VIN1 High Limit in DataSheet */
  82         0x33,   /* VIN2 High Limit in DataSheet */
  83         0x35,   /* VIN3 High Limit in DataSheet */
  84         0x37,   /* 5VCC High Limit in DataSheet */
  85         0xB4,   /* 5VSB High Limit in DataSheet */
  86         0xB6    /* VBAT High Limit in DataSheet */
  87 };
  88 static const u8 W83792D_REG_IN_MIN[9] = {
  89         0x2C,   /* Vcore A Low Limit in DataSheet */
  90         0x2E,   /* Vcore B Low Limit in DataSheet */
  91         0x30,   /* VIN0 Low Limit in DataSheet */
  92         0x32,   /* VIN1 Low Limit in DataSheet */
  93         0x34,   /* VIN2 Low Limit in DataSheet */
  94         0x36,   /* VIN3 Low Limit in DataSheet */
  95         0x38,   /* 5VCC Low Limit in DataSheet */
  96         0xB5,   /* 5VSB Low Limit in DataSheet */
  97         0xB7    /* VBAT Low Limit in DataSheet */
  98 };
  99 static const u8 W83792D_REG_FAN[7] = {
 100         0x28,   /* FAN 1 Count in DataSheet */
 101         0x29,   /* FAN 2 Count in DataSheet */
 102         0x2A,   /* FAN 3 Count in DataSheet */
 103         0xB8,   /* FAN 4 Count in DataSheet */
 104         0xB9,   /* FAN 5 Count in DataSheet */
 105         0xBA,   /* FAN 6 Count in DataSheet */
 106         0xBE    /* FAN 7 Count in DataSheet */
 107 };
 108 static const u8 W83792D_REG_FAN_MIN[7] = {
 109         0x3B,   /* FAN 1 Count Low Limit in DataSheet */
 110         0x3C,   /* FAN 2 Count Low Limit in DataSheet */
 111         0x3D,   /* FAN 3 Count Low Limit in DataSheet */
 112         0xBB,   /* FAN 4 Count Low Limit in DataSheet */
 113         0xBC,   /* FAN 5 Count Low Limit in DataSheet */
 114         0xBD,   /* FAN 6 Count Low Limit in DataSheet */
 115         0xBF    /* FAN 7 Count Low Limit in DataSheet */
 116 };
 117 #define W83792D_REG_FAN_CFG 0x84        /* FAN Configuration in DataSheet */
 118 static const u8 W83792D_REG_FAN_DIV[4] = {
 119         0x47,   /* contains FAN2 and FAN1 Divisor */
 120         0x5B,   /* contains FAN4 and FAN3 Divisor */
 121         0x5C,   /* contains FAN6 and FAN5 Divisor */
 122         0x9E    /* contains FAN7 Divisor. */
 123 };
 124 static const u8 W83792D_REG_PWM[7] = {
 125         0x81,   /* FAN 1 Duty Cycle, be used to control */
 126         0x83,   /* FAN 2 Duty Cycle, be used to control */
 127         0x94,   /* FAN 3 Duty Cycle, be used to control */
 128         0xA3,   /* FAN 4 Duty Cycle, be used to control */
 129         0xA4,   /* FAN 5 Duty Cycle, be used to control */
 130         0xA5,   /* FAN 6 Duty Cycle, be used to control */
 131         0xA6    /* FAN 7 Duty Cycle, be used to control */
 132 };
 133 #define W83792D_REG_BANK                0x4E
 134 #define W83792D_REG_TEMP2_CONFIG        0xC2
 135 #define W83792D_REG_TEMP3_CONFIG        0xCA
 136
 137 static const u8 W83792D_REG_TEMP1[3] = {
 138         0x27,   /* TEMP 1 in DataSheet */
 139         0x39,   /* TEMP 1 Over in DataSheet */
 140         0x3A,   /* TEMP 1 Hyst in DataSheet */
 141 };
 142
 143 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
 144         { 0xC0,         /* TEMP 2 in DataSheet */
 145           0xC1,         /* TEMP 2(0.5 deg) in DataSheet */
 146           0xC5,         /* TEMP 2 Over High part in DataSheet */
 147           0xC6,         /* TEMP 2 Over Low part in DataSheet */
 148           0xC3,         /* TEMP 2 Thyst High part in DataSheet */
 149           0xC4 },       /* TEMP 2 Thyst Low part in DataSheet */
 150         { 0xC8,         /* TEMP 3 in DataSheet */
 151           0xC9,         /* TEMP 3(0.5 deg) in DataSheet */
 152           0xCD,         /* TEMP 3 Over High part in DataSheet */
 153           0xCE,         /* TEMP 3 Over Low part in DataSheet */
 154           0xCB,         /* TEMP 3 Thyst High part in DataSheet */
 155           0xCC }        /* TEMP 3 Thyst Low part in DataSheet */
 156 };
 157
 158 static const u8 W83792D_REG_THERMAL[3] = {
 159         0x85,   /* SmartFanI: Fan1 target value */
 160         0x86,   /* SmartFanI: Fan2 target value */
 161         0x96    /* SmartFanI: Fan3 target value */
 162 };
 163
 164 static const u8 W83792D_REG_TOLERANCE[3] = {
 165         0x87,   /* (bit3-0)SmartFan Fan1 tolerance */
 166         0x87,   /* (bit7-4)SmartFan Fan2 tolerance */
 167         0x97    /* (bit3-0)SmartFan Fan3 tolerance */
 168 };
 169
 170 static const u8 W83792D_REG_POINTS[3][4] = {
 171         { 0x85,         /* SmartFanII: Fan1 temp point 1 */
 172           0xE3,         /* SmartFanII: Fan1 temp point 2 */
 173           0xE4,         /* SmartFanII: Fan1 temp point 3 */
 174           0xE5 },       /* SmartFanII: Fan1 temp point 4 */
 175         { 0x86,         /* SmartFanII: Fan2 temp point 1 */
 176           0xE6,         /* SmartFanII: Fan2 temp point 2 */
 177           0xE7,         /* SmartFanII: Fan2 temp point 3 */
 178           0xE8 },       /* SmartFanII: Fan2 temp point 4 */
 179         { 0x96,         /* SmartFanII: Fan3 temp point 1 */
 180           0xE9,         /* SmartFanII: Fan3 temp point 2 */
 181           0xEA,         /* SmartFanII: Fan3 temp point 3 */
 182           0xEB }        /* SmartFanII: Fan3 temp point 4 */
 183 };
 184
 185 static const u8 W83792D_REG_LEVELS[3][4] = {
 186         { 0x88,         /* (bit3-0) SmartFanII: Fan1 Non-Stop */
 187           0x88,         /* (bit7-4) SmartFanII: Fan1 Level 1 */
 188           0xE0,         /* (bit7-4) SmartFanII: Fan1 Level 2 */
 189           0xE0 },       /* (bit3-0) SmartFanII: Fan1 Level 3 */
 190         { 0x89,         /* (bit3-0) SmartFanII: Fan2 Non-Stop */
 191           0x89,         /* (bit7-4) SmartFanII: Fan2 Level 1 */
 192           0xE1,         /* (bit7-4) SmartFanII: Fan2 Level 2 */
 193           0xE1 },       /* (bit3-0) SmartFanII: Fan2 Level 3 */
 194         { 0x98,         /* (bit3-0) SmartFanII: Fan3 Non-Stop */
 195           0x98,         /* (bit7-4) SmartFanII: Fan3 Level 1 */
 196           0xE2,         /* (bit7-4) SmartFanII: Fan3 Level 2 */
 197           0xE2 }        /* (bit3-0) SmartFanII: Fan3 Level 3 */
 198 };
 199
 200 #define W83792D_REG_GPIO_EN             0x1A
 201 #define W83792D_REG_CONFIG              0x40
 202 #define W83792D_REG_VID_FANDIV          0x47
 203 #define W83792D_REG_CHIPID              0x49
 204 #define W83792D_REG_WCHIPID             0x58
 205 #define W83792D_REG_CHIPMAN             0x4F
 206 #define W83792D_REG_PIN                 0x4B
 207 #define W83792D_REG_I2C_SUBADDR         0x4A
 208
 209 #define W83792D_REG_ALARM1 0xA9         /* realtime status register1 */
 210 #define W83792D_REG_ALARM2 0xAA         /* realtime status register2 */
 211 #define W83792D_REG_ALARM3 0xAB         /* realtime status register3 */
 212 #define W83792D_REG_CHASSIS 0x42        /* Bit 5: Case Open status bit */
 213 #define W83792D_REG_CHASSIS_CLR 0x44    /* Bit 7: Case Open CLR_CHS/Reset bit */
 214
 215 /* control in0/in1 's limit modifiability */
 216 #define W83792D_REG_VID_IN_B            0x17
 217
 218 #define W83792D_REG_VBAT                0x5D
 219 #define W83792D_REG_I2C_ADDR            0x48
 220
 221 /* Conversions. Rounding and limit checking is only done on the TO_REG
 222    variants. Note that you should be a bit careful with which arguments
 223    these macros are called: arguments may be evaluated more than once.
 224    Fixing this is just not worth it. */
 225 #define IN_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
 226                                 ((((nr)==6)||((nr)==7))?(val*6):(val*4)))
 227 #define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
 228                                 ((((nr)==6)||((nr)==7))?(val/6):(val/4)))
 229
 230 static inline u8
 231 FAN_TO_REG(long rpm, int div)
 232 {
 233         if (rpm == 0)
 234                 return 255;
 235         rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 236         return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 237 }
 238
 239 #define FAN_FROM_REG(val,div)   ((val) == 0   ? -1 : \
 240                                 ((val) == 255 ? 0 : \
 241                                                 1350000 / ((val) * (div))))
 242
 243 /* for temp1 */
 244 #define TEMP1_TO_REG(val)       (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 245                                         : (val)) / 1000, 0, 0xff))
 246 #define TEMP1_FROM_REG(val)     (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 247 /* for temp2 and temp3, because they need additional resolution */
 248 #define TEMP_ADD_FROM_REG(val1, val2) \
 249         ((((val1) & 0x80 ? (val1)-0x100 \
 250                 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
 251 #define TEMP_ADD_TO_REG_HIGH(val) \
 252         (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 253                         : (val)) / 1000, 0, 0xff))
 254 #define TEMP_ADD_TO_REG_LOW(val)        ((val%1000) ? 0x80 : 0x00)
 255
 256 #define DIV_FROM_REG(val)               (1 << (val))
 257
 258 static inline u8
 259 DIV_TO_REG(long val)
 260 {
 261         int i;
 262         val = SENSORS_LIMIT(val, 1, 128) >> 1;
 263         for (i = 0; i < 7; i++) {
 264                 if (val == 0)
 265                         break;
 266                 val >>= 1;
 267         }
 268         return ((u8) i);
 269 }
 270
 271 struct w83792d_data {
 272         struct device *hwmon_dev;
 273
 274         struct mutex update_lock;
 275         char valid;             /* !=0 if following fields are valid */
 276         unsigned long last_updated;     /* In jiffies */
 277
 278         /* array of 2 pointers to subclients */
 279         struct i2c_client *lm75[2];
 280
 281         u8 in[9];               /* Register value */
 282         u8 in_max[9];           /* Register value */
 283         u8 in_min[9];           /* Register value */
 284         u16 low_bits;           /* Additional resolution to voltage in6-0 */
 285         u8 fan[7];              /* Register value */
 286         u8 fan_min[7];          /* Register value */
 287         u8 temp1[3];            /* current, over, thyst */
 288         u8 temp_add[2][6];      /* Register value */
 289         u8 fan_div[7];          /* Register encoding, shifted right */
 290         u8 pwm[7];              /* We only consider the first 3 set of pwm,
 291                                    although 792 chip has 7 set of pwm. */
 292         u8 pwmenable[3];
 293         u32 alarms;             /* realtime status register encoding,combined */
 294         u8 chassis;             /* Chassis status */
 295         u8 chassis_clear;       /* CLR_CHS, clear chassis intrusion detection */
 296         u8 thermal_cruise[3];   /* Smart FanI: Fan1,2,3 target value */
 297         u8 tolerance[3];        /* Fan1,2,3 tolerance(Smart Fan I/II) */
 298         u8 sf2_points[3][4];    /* Smart FanII: Fan1,2,3 temperature points */
 299         u8 sf2_levels[3][4];    /* Smart FanII: Fan1,2,3 duty cycle levels */
 300 };
 301
 302 static int w83792d_probe(struct i2c_client *client,
 303                          const struct i2c_device_id *id);
 304 static int w83792d_detect(struct i2c_client *client,
 305                           struct i2c_board_info *info);
 306 static int w83792d_remove(struct i2c_client *client);
 307 static struct w83792d_data *w83792d_update_device(struct device *dev);
 308
 309 #ifdef DEBUG
 310 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 311 #endif
 312
 313 static void w83792d_init_client(struct i2c_client *client);
 314
 315 static const struct i2c_device_id w83792d_id[] = {
 316         { "w83792d", 0 },
 317         { }
 318 };
 319 MODULE_DEVICE_TABLE(i2c, w83792d_id);
 320
 321 static struct i2c_driver w83792d_driver = {
 322         .class          = I2C_CLASS_HWMON,
 323         .driver = {
 324                 .name = "w83792d",
 325         },
 326         .probe          = w83792d_probe,
 327         .remove         = w83792d_remove,
 328         .id_table       = w83792d_id,
 329         .detect         = w83792d_detect,
 330         .address_list   = normal_i2c,
 331 };
 332
 333 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
 334 {
 335         /* in7 and in8 do not have low bits, but the formula still works */
 336         return ((data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03));
 337 }
 338
 339 /* The SMBus locks itself. The Winbond W83792D chip has a bank register,
 340    but the driver only accesses registers in bank 0, so we don't have
 341    to switch banks and lock access between switches. */
 342 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
 343 {
 344         return i2c_smbus_read_byte_data(client, reg);
 345 }
 346
 347 static inline int
 348 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
 349 {
 350         return i2c_smbus_write_byte_data(client, reg, value);
 351 }
 352
 353 /* following are the sysfs callback functions */
 354 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 355                         char *buf)
 356 {
 357         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 358         int nr = sensor_attr->index;
 359         struct w83792d_data *data = w83792d_update_device(dev);
 360         return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
 361 }
 362
 363 #define show_in_reg(reg) \
 364 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 365                         char *buf) \
 366 { \
 367         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 368         int nr = sensor_attr->index; \
 369         struct w83792d_data *data = w83792d_update_device(dev); \
 370         return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
 371 }
 372
 373 show_in_reg(in_min);
 374 show_in_reg(in_max);
 375
 376 #define store_in_reg(REG, reg) \
 377 static ssize_t store_in_##reg (struct device *dev, \
 378                                 struct device_attribute *attr, \
 379                                 const char *buf, size_t count) \
 380 { \
 381         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 382         int nr = sensor_attr->index; \
 383         struct i2c_client *client = to_i2c_client(dev); \
 384         struct w83792d_data *data = i2c_get_clientdata(client); \
 385         u32 val; \
 386          \
 387         val = simple_strtoul(buf, NULL, 10); \
 388         mutex_lock(&data->update_lock); \
 389         data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
 390         w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
 391         mutex_unlock(&data->update_lock); \
 392          \
 393         return count; \
 394 }
 395 store_in_reg(MIN, min);
 396 store_in_reg(MAX, max);
 397
 398 #define show_fan_reg(reg) \
 399 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
 400                         char *buf) \
 401 { \
 402         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
 403         int nr = sensor_attr->index - 1; \
 404         struct w83792d_data *data = w83792d_update_device(dev); \
 405         return sprintf(buf,"%d\n", \
 406                 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 407 }
 408
 409 show_fan_reg(fan);
 410 show_fan_reg(fan_min);
 411
 412 static ssize_t
 413 store_fan_min(struct device *dev, struct device_attribute *attr,
 414                 const char *buf, size_t count)
 415 {
 416         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 417         int nr = sensor_attr->index - 1;
 418         struct i2c_client *client = to_i2c_client(dev);
 419         struct w83792d_data *data = i2c_get_clientdata(client);
 420         u32 val;
 421
 422         val = simple_strtoul(buf, NULL, 10);
 423         mutex_lock(&data->update_lock);
 424         data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 425         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
 426                                 data->fan_min[nr]);
 427         mutex_unlock(&data->update_lock);
 428
 429         return count;
 430 }
 431
 432 static ssize_t
 433 show_fan_div(struct device *dev, struct device_attribute *attr,
 434                 char *buf)
 435 {
 436         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 437         int nr = sensor_attr->index;
 438         struct w83792d_data *data = w83792d_update_device(dev);
 439         return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
 440 }
 441
 442 /* Note: we save and restore the fan minimum here, because its value is
 443    determined in part by the fan divisor.  This follows the principle of
 444    least surprise; the user doesn't expect the fan minimum to change just
 445    because the divisor changed. */
 446 static ssize_t
 447 store_fan_div(struct device *dev, struct device_attribute *attr,
 448                 const char *buf, size_t count)
 449 {
 450         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 451         int nr = sensor_attr->index - 1;
 452         struct i2c_client *client = to_i2c_client(dev);
 453         struct w83792d_data *data = i2c_get_clientdata(client);
 454         unsigned long min;
 455         /*u8 reg;*/
 456         u8 fan_div_reg = 0;
 457         u8 tmp_fan_div;
 458
 459         /* Save fan_min */
 460         mutex_lock(&data->update_lock);
 461         min = FAN_FROM_REG(data->fan_min[nr],
 462                            DIV_FROM_REG(data->fan_div[nr]));
 463
 464         data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
 465
 466         fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
 467         fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
 468         tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
 469                                         : ((data->fan_div[nr]) & 0x07);
 470         w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
 471                                         fan_div_reg | tmp_fan_div);
 472
 473         /* Restore fan_min */
 474         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 475         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
 476         mutex_unlock(&data->update_lock);
 477
 478         return count;
 479 }
 480
 481 /* read/write the temperature1, includes measured value and limits */
 482
 483 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
 484                                 char *buf)
 485 {
 486         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 487         int nr = sensor_attr->index;
 488         struct w83792d_data *data = w83792d_update_device(dev);
 489         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
 490 }
 491
 492 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 493                                 const char *buf, size_t count)
 494 {
 495         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 496         int nr = sensor_attr->index;
 497         struct i2c_client *client = to_i2c_client(dev);
 498         struct w83792d_data *data = i2c_get_clientdata(client);
 499         s32 val;
 500
 501         val = simple_strtol(buf, NULL, 10);
 502         mutex_lock(&data->update_lock);
 503         data->temp1[nr] = TEMP1_TO_REG(val);
 504         w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 505                 data->temp1[nr]);
 506         mutex_unlock(&data->update_lock);
 507
 508         return count;
 509 }
 510
 511 /* read/write the temperature2-3, includes measured value and limits */
 512
 513 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
 514                                 char *buf)
 515 {
 516         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 517         int nr = sensor_attr->nr;
 518         int index = sensor_attr->index;
 519         struct w83792d_data *data = w83792d_update_device(dev);
 520         return sprintf(buf,"%ld\n",
 521                 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
 522                         data->temp_add[nr][index+1]));
 523 }
 524
 525 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 526                                 const char *buf, size_t count)
 527 {
 528         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 529         int nr = sensor_attr->nr;
 530         int index = sensor_attr->index;
 531         struct i2c_client *client = to_i2c_client(dev);
 532         struct w83792d_data *data = i2c_get_clientdata(client);
 533         s32 val;
 534
 535         val = simple_strtol(buf, NULL, 10);
 536         mutex_lock(&data->update_lock);
 537         data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 538         data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 539         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 540                 data->temp_add[nr][index]);
 541         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 542                 data->temp_add[nr][index+1]);
 543         mutex_unlock(&data->update_lock);
 544
 545         return count;
 546 }
 547
 548 /* get reatime status of all sensors items: voltage, temp, fan */
 549 static ssize_t
 550 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
 551 {
 552         struct w83792d_data *data = w83792d_update_device(dev);
 553         return sprintf(buf, "%d\n", data->alarms);
 554 }
 555
 556 static ssize_t show_alarm(struct device *dev,
 557                           struct device_attribute *attr, char *buf)
 558 {
 559         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 560         int nr = sensor_attr->index;
 561         struct w83792d_data *data = w83792d_update_device(dev);
 562         return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
 563 }
 564
 565 static ssize_t
 566 show_pwm(struct device *dev, struct device_attribute *attr,
 567                 char *buf)
 568 {
 569         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 570         int nr = sensor_attr->index;
 571         struct w83792d_data *data = w83792d_update_device(dev);
 572         return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 573 }
 574
 575 static ssize_t
 576 show_pwmenable(struct device *dev, struct device_attribute *attr,
 577                         char *buf)
 578 {
 579         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 580         int nr = sensor_attr->index - 1;
 581         struct w83792d_data *data = w83792d_update_device(dev);
 582         long pwm_enable_tmp = 1;
 583
 584         switch (data->pwmenable[nr]) {
 585         case 0:
 586                 pwm_enable_tmp = 1; /* manual mode */
 587                 break;
 588         case 1:
 589                 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
 590                 break;
 591         case 2:
 592                 pwm_enable_tmp = 2; /* Smart Fan II */
 593                 break;
 594         }
 595
 596         return sprintf(buf, "%ld\n", pwm_enable_tmp);
 597 }
 598
 599 static ssize_t
 600 store_pwm(struct device *dev, struct device_attribute *attr,
 601                 const char *buf, size_t count)
 602 {
 603         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 604         int nr = sensor_attr->index;
 605         struct i2c_client *client = to_i2c_client(dev);
 606         struct w83792d_data *data = i2c_get_clientdata(client);
 607         u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255) >> 4;
 608
 609         mutex_lock(&data->update_lock);
 610         val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
 611         data->pwm[nr] = val;
 612         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 613         mutex_unlock(&data->update_lock);
 614
 615         return count;
 616 }
 617
 618 static ssize_t
 619 store_pwmenable(struct device *dev, struct device_attribute *attr,
 620                         const char *buf, size_t count)
 621 {
 622         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 623         int nr = sensor_attr->index - 1;
 624         struct i2c_client *client = to_i2c_client(dev);
 625         struct w83792d_data *data = i2c_get_clientdata(client);
 626         u32 val;
 627         u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 628
 629         val = simple_strtoul(buf, NULL, 10);
 630         if (val < 1 || val > 3)
 631                 return -EINVAL;
 632
 633         mutex_lock(&data->update_lock);
 634         switch (val) {
 635         case 1:
 636                 data->pwmenable[nr] = 0; /* manual mode */
 637                 break;
 638         case 2:
 639                 data->pwmenable[nr] = 2; /* Smart Fan II */
 640                 break;
 641         case 3:
 642                 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 643                 break;
 644         }
 645         cfg1_tmp = data->pwmenable[0];
 646         cfg2_tmp = (data->pwmenable[1]) << 2;
 647         cfg3_tmp = (data->pwmenable[2]) << 4;
 648         cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
 649         fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 650         w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
 651         mutex_unlock(&data->update_lock);
 652
 653         return count;
 654 }
 655
 656 static ssize_t
 657 show_pwm_mode(struct device *dev, struct device_attribute *attr,
 658                         char *buf)
 659 {
 660         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 661         int nr = sensor_attr->index;
 662         struct w83792d_data *data = w83792d_update_device(dev);
 663         return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 664 }
 665
 666 static ssize_t
 667 store_pwm_mode(struct device *dev, struct device_attribute *attr,
 668                         const char *buf, size_t count)
 669 {
 670         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 671         int nr = sensor_attr->index;
 672         struct i2c_client *client = to_i2c_client(dev);
 673         struct w83792d_data *data = i2c_get_clientdata(client);
 674         u32 val;
 675
 676         val = simple_strtoul(buf, NULL, 10);
 677         if (val != 0 && val != 1)
 678                 return -EINVAL;
 679
 680         mutex_lock(&data->update_lock);
 681         data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
 682         if (val) {                      /* PWM mode */
 683                 data->pwm[nr] |= 0x80;
 684         } else {                        /* DC mode */
 685                 data->pwm[nr] &= 0x7f;
 686         }
 687         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 688         mutex_unlock(&data->update_lock);
 689
 690         return count;
 691 }
 692
 693 static ssize_t
 694 show_chassis(struct device *dev, struct device_attribute *attr,
 695                         char *buf)
 696 {
 697         struct w83792d_data *data = w83792d_update_device(dev);
 698         return sprintf(buf, "%d\n", data->chassis);
 699 }
 700
 701 static ssize_t
 702 show_regs_chassis(struct device *dev, struct device_attribute *attr,
 703                         char *buf)
 704 {
 705         dev_warn(dev,
 706                  "Attribute %s is deprecated, use intrusion0_alarm instead\n",
 707                  "chassis");
 708         return show_chassis(dev, attr, buf);
 709 }
 710
 711 static ssize_t
 712 show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
 713 {
 714         struct w83792d_data *data = w83792d_update_device(dev);
 715         return sprintf(buf, "%d\n", data->chassis_clear);
 716 }
 717
 718 static ssize_t
 719 store_chassis_clear_legacy(struct device *dev, struct device_attribute *attr,
 720                         const char *buf, size_t count)
 721 {
 722         struct i2c_client *client = to_i2c_client(dev);
 723         struct w83792d_data *data = i2c_get_clientdata(client);
 724         u32 val;
 725         u8 temp1 = 0, temp2 = 0;
 726
 727         dev_warn(dev,
 728                  "Attribute %s is deprecated, use intrusion0_alarm instead\n",
 729                  "chassis_clear");
 730
 731         val = simple_strtoul(buf, NULL, 10);
 732         mutex_lock(&data->update_lock);
 733         data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
 734         temp1 = ((data->chassis_clear) << 7) & 0x80;
 735         temp2 = w83792d_read_value(client,
 736                 W83792D_REG_CHASSIS_CLR) & 0x7f;
 737         w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
 738         mutex_unlock(&data->update_lock);
 739
 740         return count;
 741 }
 742
 743 static ssize_t
 744 store_chassis_clear(struct device *dev, struct device_attribute *attr,
 745                         const char *buf, size_t count)
 746 {
 747         struct i2c_client *client = to_i2c_client(dev);
 748         struct w83792d_data *data = i2c_get_clientdata(client);
 749         unsigned long val;
 750         u8 reg;
 751
 752         if (strict_strtoul(buf, 10, &val) || val != 0)
 753                 return -EINVAL;
 754
 755         mutex_lock(&data->update_lock);
 756         reg = w83792d_read_value(client, W83792D_REG_CHASSIS_CLR);
 757         w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, reg | 0x80);
 758         data->valid = 0;                /* Force cache refresh */
 759         mutex_unlock(&data->update_lock);
 760
 761         return count;
 762 }
 763
 764 /* For Smart Fan I / Thermal Cruise */
 765 static ssize_t
 766 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 767                         char *buf)
 768 {
 769         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 770         int nr = sensor_attr->index;
 771         struct w83792d_data *data = w83792d_update_device(dev);
 772         return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 773 }
 774
 775 static ssize_t
 776 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 777                         const char *buf, size_t count)
 778 {
 779         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 780         int nr = sensor_attr->index - 1;
 781         struct i2c_client *client = to_i2c_client(dev);
 782         struct w83792d_data *data = i2c_get_clientdata(client);
 783         u32 val;
 784         u8 target_tmp=0, target_mask=0;
 785
 786         val = simple_strtoul(buf, NULL, 10);
 787         target_tmp = val;
 788         target_tmp = target_tmp & 0x7f;
 789         mutex_lock(&data->update_lock);
 790         target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
 791         data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
 792         w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 793                 (data->thermal_cruise[nr]) | target_mask);
 794         mutex_unlock(&data->update_lock);
 795
 796         return count;
 797 }
 798
 799 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
 800 static ssize_t
 801 show_tolerance(struct device *dev, struct device_attribute *attr,
 802                 char *buf)
 803 {
 804         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 805         int nr = sensor_attr->index;
 806         struct w83792d_data *data = w83792d_update_device(dev);
 807         return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 808 }
 809
 810 static ssize_t
 811 store_tolerance(struct device *dev, struct device_attribute *attr,
 812                 const char *buf, size_t count)
 813 {
 814         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 815         int nr = sensor_attr->index - 1;
 816         struct i2c_client *client = to_i2c_client(dev);
 817         struct w83792d_data *data = i2c_get_clientdata(client);
 818         u32 val;
 819         u8 tol_tmp, tol_mask;
 820
 821         val = simple_strtoul(buf, NULL, 10);
 822         mutex_lock(&data->update_lock);
 823         tol_mask = w83792d_read_value(client,
 824                 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 825         tol_tmp = SENSORS_LIMIT(val, 0, 15);
 826         tol_tmp &= 0x0f;
 827         data->tolerance[nr] = tol_tmp;
 828         if (nr == 1) {
 829                 tol_tmp <<= 4;
 830         }
 831         w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 832                 tol_mask | tol_tmp);
 833         mutex_unlock(&data->update_lock);
 834
 835         return count;
 836 }
 837
 838 /* For Smart Fan II */
 839 static ssize_t
 840 show_sf2_point(struct device *dev, struct device_attribute *attr,
 841                 char *buf)
 842 {
 843         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 844         int nr = sensor_attr->nr;
 845         int index = sensor_attr->index;
 846         struct w83792d_data *data = w83792d_update_device(dev);
 847         return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 848 }
 849
 850 static ssize_t
 851 store_sf2_point(struct device *dev, struct device_attribute *attr,
 852                 const char *buf, size_t count)
 853 {
 854         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 855         int nr = sensor_attr->nr - 1;
 856         int index = sensor_attr->index - 1;
 857         struct i2c_client *client = to_i2c_client(dev);
 858         struct w83792d_data *data = i2c_get_clientdata(client);
 859         u32 val;
 860         u8 mask_tmp = 0;
 861
 862         val = simple_strtoul(buf, NULL, 10);
 863         mutex_lock(&data->update_lock);
 864         data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
 865         mask_tmp = w83792d_read_value(client,
 866                                         W83792D_REG_POINTS[index][nr]) & 0x80;
 867         w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 868                 mask_tmp|data->sf2_points[index][nr]);
 869         mutex_unlock(&data->update_lock);
 870
 871         return count;
 872 }
 873
 874 static ssize_t
 875 show_sf2_level(struct device *dev, struct device_attribute *attr,
 876                 char *buf)
 877 {
 878         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 879         int nr = sensor_attr->nr;
 880         int index = sensor_attr->index;
 881         struct w83792d_data *data = w83792d_update_device(dev);
 882         return sprintf(buf, "%d\n",
 883                         (((data->sf2_levels[index-1][nr]) * 100) / 15));
 884 }
 885
 886 static ssize_t
 887 store_sf2_level(struct device *dev, struct device_attribute *attr,
 888                 const char *buf, size_t count)
 889 {
 890         struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
 891         int nr = sensor_attr->nr;
 892         int index = sensor_attr->index - 1;
 893         struct i2c_client *client = to_i2c_client(dev);
 894         struct w83792d_data *data = i2c_get_clientdata(client);
 895         u32 val;
 896         u8 mask_tmp=0, level_tmp=0;
 897
 898         val = simple_strtoul(buf, NULL, 10);
 899         mutex_lock(&data->update_lock);
 900         data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
 901         mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 902                 & ((nr==3) ? 0xf0 : 0x0f);
 903         if (nr==3) {
 904                 level_tmp = data->sf2_levels[index][nr];
 905         } else {
 906                 level_tmp = data->sf2_levels[index][nr] << 4;
 907         }
 908         w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
 909         mutex_unlock(&data->update_lock);
 910
 911         return count;
 912 }
 913
 914
 915 static int
 916 w83792d_detect_subclients(struct i2c_client *new_client)
 917 {
 918         int i, id, err;
 919         int address = new_client->addr;
 920         u8 val;
 921         struct i2c_adapter *adapter = new_client->adapter;
 922         struct w83792d_data *data = i2c_get_clientdata(new_client);
 923
 924         id = i2c_adapter_id(adapter);
 925         if (force_subclients[0] == id && force_subclients[1] == address) {
 926                 for (i = 2; i <= 3; i++) {
 927                         if (force_subclients[i] < 0x48 ||
 928                             force_subclients[i] > 0x4f) {
 929                                 dev_err(&new_client->dev, "invalid subclient "
 930                                         "address %d; must be 0x48-0x4f\n",
 931                                         force_subclients[i]);
 932                                 err = -ENODEV;
 933                                 goto ERROR_SC_0;
 934                         }
 935                 }
 936                 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
 937                                         (force_subclients[2] & 0x07) |
 938                                         ((force_subclients[3] & 0x07) << 4));
 939         }
 940
 941         val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
 942         if (!(val & 0x08)) {
 943                 data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
 944         }
 945         if (!(val & 0x80)) {
 946                 if ((data->lm75[0] != NULL) &&
 947                         ((val & 0x7) == ((val >> 4) & 0x7))) {
 948                         dev_err(&new_client->dev, "duplicate addresses 0x%x, "
 949                                 "use force_subclient\n", data->lm75[0]->addr);
 950                         err = -ENODEV;
 951                         goto ERROR_SC_1;
 952                 }
 953                 data->lm75[1] = i2c_new_dummy(adapter,
 954                                               0x48 + ((val >> 4) & 0x7));
 955         }
 956
 957         return 0;
 958
 959 /* Undo inits in case of errors */
 960
 961 ERROR_SC_1:
 962         if (data->lm75[0] != NULL)
 963                 i2c_unregister_device(data->lm75[0]);
 964 ERROR_SC_0:
 965         return err;
 966 }
 967
 968 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 969 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 970 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 971 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 972 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
 973 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
 974 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
 975 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
 976 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
 977 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
 978                         show_in_min, store_in_min, 0);
 979 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
 980                         show_in_min, store_in_min, 1);
 981 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
 982                         show_in_min, store_in_min, 2);
 983 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
 984                         show_in_min, store_in_min, 3);
 985 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
 986                         show_in_min, store_in_min, 4);
 987 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
 988                         show_in_min, store_in_min, 5);
 989 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
 990                         show_in_min, store_in_min, 6);
 991 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
 992                         show_in_min, store_in_min, 7);
 993 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
 994                         show_in_min, store_in_min, 8);
 995 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
 996                         show_in_max, store_in_max, 0);
 997 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
 998                         show_in_max, store_in_max, 1);
 999 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
1000                         show_in_max, store_in_max, 2);
1001 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
1002                         show_in_max, store_in_max, 3);
1003 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
1004                         show_in_max, store_in_max, 4);
1005 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
1006                         show_in_max, store_in_max, 5);
1007 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
1008                         show_in_max, store_in_max, 6);
1009 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
1010                         show_in_max, store_in_max, 7);
1011 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
1012                         show_in_max, store_in_max, 8);
1013 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
1014 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
1015 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
1016 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1017                         show_temp1, store_temp1, 0, 1);
1018 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
1019                         store_temp23, 0, 2);
1020 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
1021                         store_temp23, 1, 2);
1022 static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1023                         show_temp1, store_temp1, 0, 2);
1024 static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1025                         show_temp23, store_temp23, 0, 4);
1026 static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1027                         show_temp23, store_temp23, 1, 4);
1028 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1029 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
1030 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
1031 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
1032 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
1033 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1034 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1035 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1036 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1037 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1038 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1039 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1040 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1041 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1042 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1043 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1044 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1045 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1046 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1047 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1048 static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
1049 static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
1050                         show_chassis_clear, store_chassis_clear_legacy);
1051 static DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1052                         show_chassis, store_chassis_clear);
1053 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1054 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1055 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1056 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1057                         show_pwmenable, store_pwmenable, 1);
1058 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1059                         show_pwmenable, store_pwmenable, 2);
1060 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1061                         show_pwmenable, store_pwmenable, 3);
1062 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1063                         show_pwm_mode, store_pwm_mode, 0);
1064 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1065                         show_pwm_mode, store_pwm_mode, 1);
1066 static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1067                         show_pwm_mode, store_pwm_mode, 2);
1068 static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1069                         show_tolerance, store_tolerance, 1);
1070 static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1071                         show_tolerance, store_tolerance, 2);
1072 static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1073                         show_tolerance, store_tolerance, 3);
1074 static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1075                         show_thermal_cruise, store_thermal_cruise, 1);
1076 static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1077                         show_thermal_cruise, store_thermal_cruise, 2);
1078 static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1079                         show_thermal_cruise, store_thermal_cruise, 3);
1080 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1081                         show_sf2_point, store_sf2_point, 1, 1);
1082 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1083                         show_sf2_point, store_sf2_point, 2, 1);
1084 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1085                         show_sf2_point, store_sf2_point, 3, 1);
1086 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1087                         show_sf2_point, store_sf2_point, 4, 1);
1088 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1089                         show_sf2_point, store_sf2_point, 1, 2);
1090 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1091                         show_sf2_point, store_sf2_point, 2, 2);
1092 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1093                         show_sf2_point, store_sf2_point, 3, 2);
1094 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1095                         show_sf2_point, store_sf2_point, 4, 2);
1096 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1097                         show_sf2_point, store_sf2_point, 1, 3);
1098 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1099                         show_sf2_point, store_sf2_point, 2, 3);
1100 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1101                         show_sf2_point, store_sf2_point, 3, 3);
1102 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1103                         show_sf2_point, store_sf2_point, 4, 3);
1104 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1105                         show_sf2_level, store_sf2_level, 1, 1);
1106 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1107                         show_sf2_level, store_sf2_level, 2, 1);
1108 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1109                         show_sf2_level, store_sf2_level, 3, 1);
1110 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1111                         show_sf2_level, store_sf2_level, 1, 2);
1112 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1113                         show_sf2_level, store_sf2_level, 2, 2);
1114 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1115                         show_sf2_level, store_sf2_level, 3, 2);
1116 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1117                         show_sf2_level, store_sf2_level, 1, 3);
1118 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1119                         show_sf2_level, store_sf2_level, 2, 3);
1120 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1121                         show_sf2_level, store_sf2_level, 3, 3);
1122 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1123 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1124 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1125 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1126 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1127 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1128 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1129 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1130                         show_fan_min, store_fan_min, 1);
1131 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1132                         show_fan_min, store_fan_min, 2);
1133 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1134                         show_fan_min, store_fan_min, 3);
1135 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1136                         show_fan_min, store_fan_min, 4);
1137 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1138                         show_fan_min, store_fan_min, 5);
1139 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1140                         show_fan_min, store_fan_min, 6);
1141 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1142                         show_fan_min, store_fan_min, 7);
1143 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1144                         show_fan_div, store_fan_div, 1);
1145 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1146                         show_fan_div, store_fan_div, 2);
1147 static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1148                         show_fan_div, store_fan_div, 3);
1149 static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1150                         show_fan_div, store_fan_div, 4);
1151 static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1152                         show_fan_div, store_fan_div, 5);
1153 static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1154                         show_fan_div, store_fan_div, 6);
1155 static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1156                         show_fan_div, store_fan_div, 7);
1157
1158 static struct attribute *w83792d_attributes_fan[4][5] = {
1159         {
1160                 &sensor_dev_attr_fan4_input.dev_attr.attr,
1161                 &sensor_dev_attr_fan4_min.dev_attr.attr,
1162                 &sensor_dev_attr_fan4_div.dev_attr.attr,
1163                 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1164                 NULL
1165         }, {
1166                 &sensor_dev_attr_fan5_input.dev_attr.attr,
1167                 &sensor_dev_attr_fan5_min.dev_attr.attr,
1168                 &sensor_dev_attr_fan5_div.dev_attr.attr,
1169                 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1170                 NULL
1171         }, {
1172                 &sensor_dev_attr_fan6_input.dev_attr.attr,
1173                 &sensor_dev_attr_fan6_min.dev_attr.attr,
1174                 &sensor_dev_attr_fan6_div.dev_attr.attr,
1175                 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1176                 NULL
1177         }, {
1178                 &sensor_dev_attr_fan7_input.dev_attr.attr,
1179                 &sensor_dev_attr_fan7_min.dev_attr.attr,
1180                 &sensor_dev_attr_fan7_div.dev_attr.attr,
1181                 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1182                 NULL
1183         }
1184 };
1185
1186 static const struct attribute_group w83792d_group_fan[4] = {
1187         { .attrs = w83792d_attributes_fan[0] },
1188         { .attrs = w83792d_attributes_fan[1] },
1189         { .attrs = w83792d_attributes_fan[2] },
1190         { .attrs = w83792d_attributes_fan[3] },
1191 };
1192
1193 static struct attribute *w83792d_attributes[] = {
1194         &sensor_dev_attr_in0_input.dev_attr.attr,
1195         &sensor_dev_attr_in0_max.dev_attr.attr,
1196         &sensor_dev_attr_in0_min.dev_attr.attr,
1197         &sensor_dev_attr_in1_input.dev_attr.attr,
1198         &sensor_dev_attr_in1_max.dev_attr.attr,
1199         &sensor_dev_attr_in1_min.dev_attr.attr,
1200         &sensor_dev_attr_in2_input.dev_attr.attr,
1201         &sensor_dev_attr_in2_max.dev_attr.attr,
1202         &sensor_dev_attr_in2_min.dev_attr.attr,
1203         &sensor_dev_attr_in3_input.dev_attr.attr,
1204         &sensor_dev_attr_in3_max.dev_attr.attr,
1205         &sensor_dev_attr_in3_min.dev_attr.attr,
1206         &sensor_dev_attr_in4_input.dev_attr.attr,
1207         &sensor_dev_attr_in4_max.dev_attr.attr,
1208         &sensor_dev_attr_in4_min.dev_attr.attr,
1209         &sensor_dev_attr_in5_input.dev_attr.attr,
1210         &sensor_dev_attr_in5_max.dev_attr.attr,
1211         &sensor_dev_attr_in5_min.dev_attr.attr,
1212         &sensor_dev_attr_in6_input.dev_attr.attr,
1213         &sensor_dev_attr_in6_max.dev_attr.attr,
1214         &sensor_dev_attr_in6_min.dev_attr.attr,
1215         &sensor_dev_attr_in7_input.dev_attr.attr,
1216         &sensor_dev_attr_in7_max.dev_attr.attr,
1217         &sensor_dev_attr_in7_min.dev_attr.attr,
1218         &sensor_dev_attr_in8_input.dev_attr.attr,
1219         &sensor_dev_attr_in8_max.dev_attr.attr,
1220         &sensor_dev_attr_in8_min.dev_attr.attr,
1221         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1222         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1223         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1224         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1225         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1226         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1227         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1228         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1229         &sensor_dev_attr_in8_alarm.dev_attr.attr,
1230         &sensor_dev_attr_temp1_input.dev_attr.attr,
1231         &sensor_dev_attr_temp1_max.dev_attr.attr,
1232         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1233         &sensor_dev_attr_temp2_input.dev_attr.attr,
1234         &sensor_dev_attr_temp2_max.dev_attr.attr,
1235         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1236         &sensor_dev_attr_temp3_input.dev_attr.attr,
1237         &sensor_dev_attr_temp3_max.dev_attr.attr,
1238         &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1239         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1240         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1241         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1242         &sensor_dev_attr_pwm1.dev_attr.attr,
1243         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1244         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1245         &sensor_dev_attr_pwm2.dev_attr.attr,
1246         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1247         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1248         &sensor_dev_attr_pwm3.dev_attr.attr,
1249         &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1250         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1251         &dev_attr_alarms.attr,
1252         &dev_attr_chassis.attr,
1253         &dev_attr_chassis_clear.attr,
1254         &dev_attr_intrusion0_alarm.attr,
1255         &sensor_dev_attr_tolerance1.dev_attr.attr,
1256         &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1257         &sensor_dev_attr_tolerance2.dev_attr.attr,
1258         &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1259         &sensor_dev_attr_tolerance3.dev_attr.attr,
1260         &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1261         &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1262         &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1263         &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1264         &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1265         &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1266         &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1267         &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1268         &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1269         &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1270         &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1271         &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1272         &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1273         &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1274         &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1275         &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1276         &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1277         &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1278         &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1279         &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1280         &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1281         &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1282         &sensor_dev_attr_fan1_input.dev_attr.attr,
1283         &sensor_dev_attr_fan1_min.dev_attr.attr,
1284         &sensor_dev_attr_fan1_div.dev_attr.attr,
1285         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1286         &sensor_dev_attr_fan2_input.dev_attr.attr,
1287         &sensor_dev_attr_fan2_min.dev_attr.attr,
1288         &sensor_dev_attr_fan2_div.dev_attr.attr,
1289         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1290         &sensor_dev_attr_fan3_input.dev_attr.attr,
1291         &sensor_dev_attr_fan3_min.dev_attr.attr,
1292         &sensor_dev_attr_fan3_div.dev_attr.attr,
1293         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1294         NULL
1295 };
1296
1297 static const struct attribute_group w83792d_group = {
1298         .attrs = w83792d_attributes,
1299 };
1300
1301 /* Return 0 if detection is successful, -ENODEV otherwise */
1302 static int
1303 w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)
1304 {
1305         struct i2c_adapter *adapter = client->adapter;
1306         int val1, val2;
1307         unsigned short address = client->addr;
1308
1309         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1310                 return -ENODEV;
1311         }
1312
1313         if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
1314                 return -ENODEV;
1315
1316         val1 = w83792d_read_value(client, W83792D_REG_BANK);
1317         val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1318         /* Check for Winbond ID if in bank 0 */
1319         if (!(val1 & 0x07)) {  /* is Bank0 */
1320                 if ((!(val1 & 0x80) && val2 != 0xa3) ||
1321                     ( (val1 & 0x80) && val2 != 0x5c))
1322                         return -ENODEV;
1323         }
1324         /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1325            should match */
1326         if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
1327                 return -ENODEV;
1328
1329         /*  Put it now into bank 0 and Vendor ID High Byte */
1330         w83792d_write_value(client,
1331                             W83792D_REG_BANK,
1332                             (w83792d_read_value(client,
1333                                 W83792D_REG_BANK) & 0x78) | 0x80);
1334
1335         /* Determine the chip type. */
1336         val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1337         val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1338         if (val1 != 0x7a || val2 != 0x5c)
1339                 return -ENODEV;
1340
1341         strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
1342
1343         return 0;
1344 }
1345
1346 static int
1347 w83792d_probe(struct i2c_client *client, const struct i2c_device_id *id)
1348 {
1349         struct w83792d_data *data;
1350         struct device *dev = &client->dev;
1351         int i, val1, err;
1352
1353         data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL);
1354         if (!data) {
1355                 err = -ENOMEM;
1356                 goto ERROR0;
1357         }
1358
1359         i2c_set_clientdata(client, data);
1360         data->valid = 0;
1361         mutex_init(&data->update_lock);
1362
1363         err = w83792d_detect_subclients(client);
1364         if (err)
1365                 goto ERROR1;
1366
1367         /* Initialize the chip */
1368         w83792d_init_client(client);
1369
1370         /* A few vars need to be filled upon startup */
1371         for (i = 0; i < 7; i++) {
1372                 data->fan_min[i] = w83792d_read_value(client,
1373                                         W83792D_REG_FAN_MIN[i]);
1374         }
1375
1376         /* Register sysfs hooks */
1377         if ((err = sysfs_create_group(&dev->kobj, &w83792d_group)))
1378                 goto ERROR3;
1379
1380         /* Read GPIO enable register to check if pins for fan 4,5 are used as
1381            GPIO */
1382         val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1383
1384         if (!(val1 & 0x40))
1385                 if ((err = sysfs_create_group(&dev->kobj,
1386                                               &w83792d_group_fan[0])))
1387                         goto exit_remove_files;
1388
1389         if (!(val1 & 0x20))
1390                 if ((err = sysfs_create_group(&dev->kobj,
1391                                               &w83792d_group_fan[1])))
1392                         goto exit_remove_files;
1393
1394         val1 = w83792d_read_value(client, W83792D_REG_PIN);
1395         if (val1 & 0x40)
1396                 if ((err = sysfs_create_group(&dev->kobj,
1397                                               &w83792d_group_fan[2])))
1398                         goto exit_remove_files;
1399
1400         if (val1 & 0x04)
1401                 if ((err = sysfs_create_group(&dev->kobj,
1402                                               &w83792d_group_fan[3])))
1403                         goto exit_remove_files;
1404
1405         data->hwmon_dev = hwmon_device_register(dev);
1406         if (IS_ERR(data->hwmon_dev)) {
1407                 err = PTR_ERR(data->hwmon_dev);
1408                 goto exit_remove_files;
1409         }
1410
1411         return 0;
1412
1413 exit_remove_files:
1414         sysfs_remove_group(&dev->kobj, &w83792d_group);
1415         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1416                 sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1417 ERROR3:
1418         if (data->lm75[0] != NULL)
1419                 i2c_unregister_device(data->lm75[0]);
1420         if (data->lm75[1] != NULL)
1421                 i2c_unregister_device(data->lm75[1]);
1422 ERROR1:
1423         kfree(data);
1424 ERROR0:
1425         return err;
1426 }
1427
1428 static int
1429 w83792d_remove(struct i2c_client *client)
1430 {
1431         struct w83792d_data *data = i2c_get_clientdata(client);
1432         int i;
1433
1434         hwmon_device_unregister(data->hwmon_dev);
1435         sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1436         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1437                 sysfs_remove_group(&client->dev.kobj,
1438                                    &w83792d_group_fan[i]);
1439
1440         if (data->lm75[0] != NULL)
1441                 i2c_unregister_device(data->lm75[0]);
1442         if (data->lm75[1] != NULL)
1443                 i2c_unregister_device(data->lm75[1]);
1444
1445         kfree(data);
1446         return 0;
1447 }
1448
1449 static void
1450 w83792d_init_client(struct i2c_client *client)
1451 {
1452         u8 temp2_cfg, temp3_cfg, vid_in_b;
1453
1454         if (init) {
1455                 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1456         }
1457         /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1458            W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1459              vin0/vin1 can be modified by user;
1460            W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1461              vin0/vin1 auto-updated, can NOT be modified by user. */
1462         vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1463         w83792d_write_value(client, W83792D_REG_VID_IN_B,
1464                             vid_in_b & 0xbf);
1465
1466         temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1467         temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1468         w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1469                                 temp2_cfg & 0xe6);
1470         w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1471                                 temp3_cfg & 0xe6);
1472
1473         /* Start monitoring */
1474         w83792d_write_value(client, W83792D_REG_CONFIG,
1475                             (w83792d_read_value(client,
1476                                                 W83792D_REG_CONFIG) & 0xf7)
1477                             | 0x01);
1478 }
1479
1480 static struct w83792d_data *w83792d_update_device(struct device *dev)
1481 {
1482         struct i2c_client *client = to_i2c_client(dev);
1483         struct w83792d_data *data = i2c_get_clientdata(client);
1484         int i, j;
1485         u8 reg_array_tmp[4], reg_tmp;
1486
1487         mutex_lock(&data->update_lock);
1488
1489         if (time_after
1490             (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1491             || time_before(jiffies, data->last_updated) || !data->valid) {
1492                 dev_dbg(dev, "Starting device update\n");
1493
1494                 /* Update the voltages measured value and limits */
1495                 for (i = 0; i < 9; i++) {
1496                         data->in[i] = w83792d_read_value(client,
1497                                                 W83792D_REG_IN[i]);
1498                         data->in_max[i] = w83792d_read_value(client,
1499                                                 W83792D_REG_IN_MAX[i]);
1500                         data->in_min[i] = w83792d_read_value(client,
1501                                                 W83792D_REG_IN_MIN[i]);
1502                 }
1503                 data->low_bits = w83792d_read_value(client,
1504                                                 W83792D_REG_LOW_BITS1) +
1505                                  (w83792d_read_value(client,
1506                                                 W83792D_REG_LOW_BITS2) << 8);
1507                 for (i = 0; i < 7; i++) {
1508                         /* Update the Fan measured value and limits */
1509                         data->fan[i] = w83792d_read_value(client,
1510                                                 W83792D_REG_FAN[i]);
1511                         data->fan_min[i] = w83792d_read_value(client,
1512                                                 W83792D_REG_FAN_MIN[i]);
1513                         /* Update the PWM/DC Value and PWM/DC flag */
1514                         data->pwm[i] = w83792d_read_value(client,
1515                                                 W83792D_REG_PWM[i]);
1516                 }
1517
1518                 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1519                 data->pwmenable[0] = reg_tmp & 0x03;
1520                 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1521                 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1522
1523                 for (i = 0; i < 3; i++) {
1524                         data->temp1[i] = w83792d_read_value(client,
1525                                                         W83792D_REG_TEMP1[i]);
1526                 }
1527                 for (i = 0; i < 2; i++) {
1528                         for (j = 0; j < 6; j++) {
1529                                 data->temp_add[i][j] = w83792d_read_value(
1530                                         client,W83792D_REG_TEMP_ADD[i][j]);
1531                         }
1532                 }
1533
1534                 /* Update the Fan Divisor */
1535                 for (i = 0; i < 4; i++) {
1536                         reg_array_tmp[i] = w83792d_read_value(client,
1537                                                         W83792D_REG_FAN_DIV[i]);
1538                 }
1539                 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1540                 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1541                 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1542                 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1543                 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1544                 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1545                 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1546
1547                 /* Update the realtime status */
1548                 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1549                         (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1550                         (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1551
1552                 /* Update CaseOpen status and it's CLR_CHS. */
1553                 data->chassis = (w83792d_read_value(client,
1554                         W83792D_REG_CHASSIS) >> 5) & 0x01;
1555                 data->chassis_clear = (w83792d_read_value(client,
1556                         W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
1557
1558                 /* Update Thermal Cruise/Smart Fan I target value */
1559                 for (i = 0; i < 3; i++) {
1560                         data->thermal_cruise[i] =
1561                                 w83792d_read_value(client,
1562                                 W83792D_REG_THERMAL[i]) & 0x7f;
1563                 }
1564
1565                 /* Update Smart Fan I/II tolerance */
1566                 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1567                 data->tolerance[0] = reg_tmp & 0x0f;
1568                 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1569                 data->tolerance[2] = w83792d_read_value(client,
1570                                         W83792D_REG_TOLERANCE[2]) & 0x0f;
1571
1572                 /* Update Smart Fan II temperature points */
1573                 for (i = 0; i < 3; i++) {
1574                         for (j = 0; j < 4; j++) {
1575                                 data->sf2_points[i][j] = w83792d_read_value(
1576                                         client,W83792D_REG_POINTS[i][j]) & 0x7f;
1577                         }
1578                 }
1579
1580                 /* Update Smart Fan II duty cycle levels */
1581                 for (i = 0; i < 3; i++) {
1582                         reg_tmp = w83792d_read_value(client,
1583                                                 W83792D_REG_LEVELS[i][0]);
1584                         data->sf2_levels[i][0] = reg_tmp & 0x0f;
1585                         data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1586                         reg_tmp = w83792d_read_value(client,
1587                                                 W83792D_REG_LEVELS[i][2]);
1588                         data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1589                         data->sf2_levels[i][3] = reg_tmp & 0x0f;
1590                 }
1591
1592                 data->last_updated = jiffies;
1593                 data->valid = 1;
1594         }
1595
1596         mutex_unlock(&data->update_lock);
1597
1598 #ifdef DEBUG
1599         w83792d_print_debug(data, dev);
1600 #endif
1601
1602         return data;
1603 }
1604
1605 #ifdef DEBUG
1606 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1607 {
1608         int i=0, j=0;
1609         dev_dbg(dev, "==========The following is the debug message...========\n");
1610         dev_dbg(dev, "9 set of Voltages: =====>\n");
1611         for (i=0; i<9; i++) {
1612                 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1613                 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1614                 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1615         }
1616         dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1617         dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1618         dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1619         for (i=0; i<7; i++) {
1620                 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1621                 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1622                 dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1623         }
1624         dev_dbg(dev, "3 set of Temperatures: =====>\n");
1625         for (i=0; i<3; i++) {
1626                 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1627         }
1628
1629         for (i=0; i<2; i++) {
1630                 for (j=0; j<6; j++) {
1631                         dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1632                                                         data->temp_add[i][j]);
1633                 }
1634         }
1635
1636         for (i=0; i<7; i++) {
1637                 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1638         }
1639         dev_dbg(dev, "==========End of the debug message...==================\n");
1640         dev_dbg(dev, "\n");
1641 }
1642 #endif
1643
1644 static int __init
1645 sensors_w83792d_init(void)
1646 {
1647         return i2c_add_driver(&w83792d_driver);
1648 }
1649
1650 static void __exit
1651 sensors_w83792d_exit(void)
1652 {
1653         i2c_del_driver(&w83792d_driver);
1654 }
1655
1656 MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
1657 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1658 MODULE_LICENSE("GPL");
1659
1660 module_init(sensors_w83792d_init);
1661 module_exit(sensors_w83792d_exit);
1662