drivers/hwmon/w83792d.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
   4  *             monitoring
   5  * Copyright (C) 2004, 2005 Winbond Electronics Corp.
   6  *                          Shane Huang,
   7  *                          Rudolf Marek <r.marek@assembler.cz>
   8  *
   9  * Note:
  10  * 1. This driver is only for 2.6 kernel, 2.4 kernel need a different driver.
  11  * 2. This driver is only for Winbond W83792D C version device, there
  12  *     are also some motherboards with B version W83792D device. The
  13  *     calculation method to in6-in7(measured value, limits) is a little
  14  *     different between C and B version. C or B version can be identified
  15  *     by CR[0x49h].
  16  */
  17
  18 /*
  19  * Supports following chips:
  20  *
  21  * Chip         #vin    #fanin  #pwm    #temp   wchipid vendid  i2c     ISA
  22  * w83792d      9       7       7       3       0x7a    0x5ca3  yes     no
  23  */
  24
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/i2c.h>
  29 #include <linux/hwmon.h>
  30 #include <linux/hwmon-sysfs.h>
  31 #include <linux/err.h>
  32 #include <linux/mutex.h>
  33 #include <linux/sysfs.h>
  34 #include <linux/jiffies.h>
  35
  36 /* Addresses to scan */
  37 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
  38                                                 I2C_CLIENT_END };
  39
  40 /* Insmod parameters */
  41
  42 static unsigned short force_subclients[4];
  43 module_param_array(force_subclients, short, NULL, 0);
  44 MODULE_PARM_DESC(force_subclients,
  45                  "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
  46
  47 static bool init;
  48 module_param(init, bool, 0);
  49 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
  50
  51 /* The W83792D registers */
  52 static const u8 W83792D_REG_IN[9] = {
  53         0x20,   /* Vcore A in DataSheet */
  54         0x21,   /* Vcore B in DataSheet */
  55         0x22,   /* VIN0 in DataSheet */
  56         0x23,   /* VIN1 in DataSheet */
  57         0x24,   /* VIN2 in DataSheet */
  58         0x25,   /* VIN3 in DataSheet */
  59         0x26,   /* 5VCC in DataSheet */
  60         0xB0,   /* 5VSB in DataSheet */
  61         0xB1    /* VBAT in DataSheet */
  62 };
  63 #define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
  64 #define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
  65 static const u8 W83792D_REG_IN_MAX[9] = {
  66         0x2B,   /* Vcore A High Limit in DataSheet */
  67         0x2D,   /* Vcore B High Limit in DataSheet */
  68         0x2F,   /* VIN0 High Limit in DataSheet */
  69         0x31,   /* VIN1 High Limit in DataSheet */
  70         0x33,   /* VIN2 High Limit in DataSheet */
  71         0x35,   /* VIN3 High Limit in DataSheet */
  72         0x37,   /* 5VCC High Limit in DataSheet */
  73         0xB4,   /* 5VSB High Limit in DataSheet */
  74         0xB6    /* VBAT High Limit in DataSheet */
  75 };
  76 static const u8 W83792D_REG_IN_MIN[9] = {
  77         0x2C,   /* Vcore A Low Limit in DataSheet */
  78         0x2E,   /* Vcore B Low Limit in DataSheet */
  79         0x30,   /* VIN0 Low Limit in DataSheet */
  80         0x32,   /* VIN1 Low Limit in DataSheet */
  81         0x34,   /* VIN2 Low Limit in DataSheet */
  82         0x36,   /* VIN3 Low Limit in DataSheet */
  83         0x38,   /* 5VCC Low Limit in DataSheet */
  84         0xB5,   /* 5VSB Low Limit in DataSheet */
  85         0xB7    /* VBAT Low Limit in DataSheet */
  86 };
  87 static const u8 W83792D_REG_FAN[7] = {
  88         0x28,   /* FAN 1 Count in DataSheet */
  89         0x29,   /* FAN 2 Count in DataSheet */
  90         0x2A,   /* FAN 3 Count in DataSheet */
  91         0xB8,   /* FAN 4 Count in DataSheet */
  92         0xB9,   /* FAN 5 Count in DataSheet */
  93         0xBA,   /* FAN 6 Count in DataSheet */
  94         0xBE    /* FAN 7 Count in DataSheet */
  95 };
  96 static const u8 W83792D_REG_FAN_MIN[7] = {
  97         0x3B,   /* FAN 1 Count Low Limit in DataSheet */
  98         0x3C,   /* FAN 2 Count Low Limit in DataSheet */
  99         0x3D,   /* FAN 3 Count Low Limit in DataSheet */
 100         0xBB,   /* FAN 4 Count Low Limit in DataSheet */
 101         0xBC,   /* FAN 5 Count Low Limit in DataSheet */
 102         0xBD,   /* FAN 6 Count Low Limit in DataSheet */
 103         0xBF    /* FAN 7 Count Low Limit in DataSheet */
 104 };
 105 #define W83792D_REG_FAN_CFG 0x84        /* FAN Configuration in DataSheet */
 106 static const u8 W83792D_REG_FAN_DIV[4] = {
 107         0x47,   /* contains FAN2 and FAN1 Divisor */
 108         0x5B,   /* contains FAN4 and FAN3 Divisor */
 109         0x5C,   /* contains FAN6 and FAN5 Divisor */
 110         0x9E    /* contains FAN7 Divisor. */
 111 };
 112 static const u8 W83792D_REG_PWM[7] = {
 113         0x81,   /* FAN 1 Duty Cycle, be used to control */
 114         0x83,   /* FAN 2 Duty Cycle, be used to control */
 115         0x94,   /* FAN 3 Duty Cycle, be used to control */
 116         0xA3,   /* FAN 4 Duty Cycle, be used to control */
 117         0xA4,   /* FAN 5 Duty Cycle, be used to control */
 118         0xA5,   /* FAN 6 Duty Cycle, be used to control */
 119         0xA6    /* FAN 7 Duty Cycle, be used to control */
 120 };
 121 #define W83792D_REG_BANK                0x4E
 122 #define W83792D_REG_TEMP2_CONFIG        0xC2
 123 #define W83792D_REG_TEMP3_CONFIG        0xCA
 124
 125 static const u8 W83792D_REG_TEMP1[3] = {
 126         0x27,   /* TEMP 1 in DataSheet */
 127         0x39,   /* TEMP 1 Over in DataSheet */
 128         0x3A,   /* TEMP 1 Hyst in DataSheet */
 129 };
 130
 131 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
 132         { 0xC0,         /* TEMP 2 in DataSheet */
 133           0xC1,         /* TEMP 2(0.5 deg) in DataSheet */
 134           0xC5,         /* TEMP 2 Over High part in DataSheet */
 135           0xC6,         /* TEMP 2 Over Low part in DataSheet */
 136           0xC3,         /* TEMP 2 Thyst High part in DataSheet */
 137           0xC4 },       /* TEMP 2 Thyst Low part in DataSheet */
 138         { 0xC8,         /* TEMP 3 in DataSheet */
 139           0xC9,         /* TEMP 3(0.5 deg) in DataSheet */
 140           0xCD,         /* TEMP 3 Over High part in DataSheet */
 141           0xCE,         /* TEMP 3 Over Low part in DataSheet */
 142           0xCB,         /* TEMP 3 Thyst High part in DataSheet */
 143           0xCC }        /* TEMP 3 Thyst Low part in DataSheet */
 144 };
 145
 146 static const u8 W83792D_REG_THERMAL[3] = {
 147         0x85,   /* SmartFanI: Fan1 target value */
 148         0x86,   /* SmartFanI: Fan2 target value */
 149         0x96    /* SmartFanI: Fan3 target value */
 150 };
 151
 152 static const u8 W83792D_REG_TOLERANCE[3] = {
 153         0x87,   /* (bit3-0)SmartFan Fan1 tolerance */
 154         0x87,   /* (bit7-4)SmartFan Fan2 tolerance */
 155         0x97    /* (bit3-0)SmartFan Fan3 tolerance */
 156 };
 157
 158 static const u8 W83792D_REG_POINTS[3][4] = {
 159         { 0x85,         /* SmartFanII: Fan1 temp point 1 */
 160           0xE3,         /* SmartFanII: Fan1 temp point 2 */
 161           0xE4,         /* SmartFanII: Fan1 temp point 3 */
 162           0xE5 },       /* SmartFanII: Fan1 temp point 4 */
 163         { 0x86,         /* SmartFanII: Fan2 temp point 1 */
 164           0xE6,         /* SmartFanII: Fan2 temp point 2 */
 165           0xE7,         /* SmartFanII: Fan2 temp point 3 */
 166           0xE8 },       /* SmartFanII: Fan2 temp point 4 */
 167         { 0x96,         /* SmartFanII: Fan3 temp point 1 */
 168           0xE9,         /* SmartFanII: Fan3 temp point 2 */
 169           0xEA,         /* SmartFanII: Fan3 temp point 3 */
 170           0xEB }        /* SmartFanII: Fan3 temp point 4 */
 171 };
 172
 173 static const u8 W83792D_REG_LEVELS[3][4] = {
 174         { 0x88,         /* (bit3-0) SmartFanII: Fan1 Non-Stop */
 175           0x88,         /* (bit7-4) SmartFanII: Fan1 Level 1 */
 176           0xE0,         /* (bit7-4) SmartFanII: Fan1 Level 2 */
 177           0xE0 },       /* (bit3-0) SmartFanII: Fan1 Level 3 */
 178         { 0x89,         /* (bit3-0) SmartFanII: Fan2 Non-Stop */
 179           0x89,         /* (bit7-4) SmartFanII: Fan2 Level 1 */
 180           0xE1,         /* (bit7-4) SmartFanII: Fan2 Level 2 */
 181           0xE1 },       /* (bit3-0) SmartFanII: Fan2 Level 3 */
 182         { 0x98,         /* (bit3-0) SmartFanII: Fan3 Non-Stop */
 183           0x98,         /* (bit7-4) SmartFanII: Fan3 Level 1 */
 184           0xE2,         /* (bit7-4) SmartFanII: Fan3 Level 2 */
 185           0xE2 }        /* (bit3-0) SmartFanII: Fan3 Level 3 */
 186 };
 187
 188 #define W83792D_REG_GPIO_EN             0x1A
 189 #define W83792D_REG_CONFIG              0x40
 190 #define W83792D_REG_VID_FANDIV          0x47
 191 #define W83792D_REG_CHIPID              0x49
 192 #define W83792D_REG_WCHIPID             0x58
 193 #define W83792D_REG_CHIPMAN             0x4F
 194 #define W83792D_REG_PIN                 0x4B
 195 #define W83792D_REG_I2C_SUBADDR         0x4A
 196
 197 #define W83792D_REG_ALARM1 0xA9         /* realtime status register1 */
 198 #define W83792D_REG_ALARM2 0xAA         /* realtime status register2 */
 199 #define W83792D_REG_ALARM3 0xAB         /* realtime status register3 */
 200 #define W83792D_REG_CHASSIS 0x42        /* Bit 5: Case Open status bit */
 201 #define W83792D_REG_CHASSIS_CLR 0x44    /* Bit 7: Case Open CLR_CHS/Reset bit */
 202
 203 /* control in0/in1 's limit modifiability */
 204 #define W83792D_REG_VID_IN_B            0x17
 205
 206 #define W83792D_REG_VBAT                0x5D
 207 #define W83792D_REG_I2C_ADDR            0x48
 208
 209 /*
 210  * Conversions. Rounding and limit checking is only done on the TO_REG
 211  * variants. Note that you should be a bit careful with which arguments
 212  * these macros are called: arguments may be evaluated more than once.
 213  * Fixing this is just not worth it.
 214  */
 215 #define IN_FROM_REG(nr, val) (((nr) <= 1) ? ((val) * 2) : \
 216                 ((((nr) == 6) || ((nr) == 7)) ? ((val) * 6) : ((val) * 4)))
 217 #define IN_TO_REG(nr, val) (((nr) <= 1) ? ((val) / 2) : \
 218                 ((((nr) == 6) || ((nr) == 7)) ? ((val) / 6) : ((val) / 4)))
 219
 220 static inline u8
 221 FAN_TO_REG(long rpm, int div)
 222 {
 223         if (rpm == 0)
 224                 return 255;
 225         rpm = clamp_val(rpm, 1, 1000000);
 226         return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 227 }
 228
 229 #define FAN_FROM_REG(val, div)  ((val) == 0   ? -1 : \
 230                                 ((val) == 255 ? 0 : \
 231                                                 1350000 / ((val) * (div))))
 232
 233 /* for temp1 */
 234 #define TEMP1_TO_REG(val)       (clamp_val(((val) < 0 ? (val) + 0x100 * 1000 \
 235                                                       : (val)) / 1000, 0, 0xff))
 236 #define TEMP1_FROM_REG(val)     (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 237 /* for temp2 and temp3, because they need additional resolution */
 238 #define TEMP_ADD_FROM_REG(val1, val2) \
 239         ((((val1) & 0x80 ? (val1)-0x100 \
 240                 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
 241 #define TEMP_ADD_TO_REG_HIGH(val) \
 242         (clamp_val(((val) < 0 ? (val) + 0x100 * 1000 : (val)) / 1000, 0, 0xff))
 243 #define TEMP_ADD_TO_REG_LOW(val)        ((val%1000) ? 0x80 : 0x00)
 244
 245 #define DIV_FROM_REG(val)               (1 << (val))
 246
 247 static inline u8
 248 DIV_TO_REG(long val)
 249 {
 250         int i;
 251         val = clamp_val(val, 1, 128) >> 1;
 252         for (i = 0; i < 7; i++) {
 253                 if (val == 0)
 254                         break;
 255                 val >>= 1;
 256         }
 257         return (u8)i;
 258 }
 259
 260 struct w83792d_data {
 261         struct device *hwmon_dev;
 262
 263         struct mutex update_lock;
 264         char valid;             /* !=0 if following fields are valid */
 265         unsigned long last_updated;     /* In jiffies */
 266
 267         u8 in[9];               /* Register value */
 268         u8 in_max[9];           /* Register value */
 269         u8 in_min[9];           /* Register value */
 270         u16 low_bits;           /* Additional resolution to voltage in6-0 */
 271         u8 fan[7];              /* Register value */
 272         u8 fan_min[7];          /* Register value */
 273         u8 temp1[3];            /* current, over, thyst */
 274         u8 temp_add[2][6];      /* Register value */
 275         u8 fan_div[7];          /* Register encoding, shifted right */
 276         u8 pwm[7];              /* The 7 PWM outputs */
 277         u8 pwmenable[3];
 278         u32 alarms;             /* realtime status register encoding,combined */
 279         u8 chassis;             /* Chassis status */
 280         u8 thermal_cruise[3];   /* Smart FanI: Fan1,2,3 target value */
 281         u8 tolerance[3];        /* Fan1,2,3 tolerance(Smart Fan I/II) */
 282         u8 sf2_points[3][4];    /* Smart FanII: Fan1,2,3 temperature points */
 283         u8 sf2_levels[3][4];    /* Smart FanII: Fan1,2,3 duty cycle levels */
 284 };
 285
 286 static int w83792d_probe(struct i2c_client *client,
 287                          const struct i2c_device_id *id);
 288 static int w83792d_detect(struct i2c_client *client,
 289                           struct i2c_board_info *info);
 290 static int w83792d_remove(struct i2c_client *client);
 291 static struct w83792d_data *w83792d_update_device(struct device *dev);
 292
 293 #ifdef DEBUG
 294 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 295 #endif
 296
 297 static void w83792d_init_client(struct i2c_client *client);
 298
 299 static const struct i2c_device_id w83792d_id[] = {
 300         { "w83792d", 0 },
 301         { }
 302 };
 303 MODULE_DEVICE_TABLE(i2c, w83792d_id);
 304
 305 static struct i2c_driver w83792d_driver = {
 306         .class          = I2C_CLASS_HWMON,
 307         .driver = {
 308                 .name = "w83792d",
 309         },
 310         .probe          = w83792d_probe,
 311         .remove         = w83792d_remove,
 312         .id_table       = w83792d_id,
 313         .detect         = w83792d_detect,
 314         .address_list   = normal_i2c,
 315 };
 316
 317 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
 318 {
 319         /* in7 and in8 do not have low bits, but the formula still works */
 320         return (data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03);
 321 }
 322
 323 /*
 324  * The SMBus locks itself. The Winbond W83792D chip has a bank register,
 325  * but the driver only accesses registers in bank 0, so we don't have
 326  * to switch banks and lock access between switches.
 327  */
 328 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
 329 {
 330         return i2c_smbus_read_byte_data(client, reg);
 331 }
 332
 333 static inline int
 334 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
 335 {
 336         return i2c_smbus_write_byte_data(client, reg, value);
 337 }
 338
 339 /* following are the sysfs callback functions */
 340 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 341                         char *buf)
 342 {
 343         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 344         int nr = sensor_attr->index;
 345         struct w83792d_data *data = w83792d_update_device(dev);
 346         return sprintf(buf, "%ld\n",
 347                        IN_FROM_REG(nr, in_count_from_reg(nr, data)));
 348 }
 349
 350 #define show_in_reg(reg) \
 351 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 352                         char *buf) \
 353 { \
 354         struct sensor_device_attribute *sensor_attr \
 355                 = 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", \
 359                        (long)(IN_FROM_REG(nr, data->reg[nr]) * 4)); \
 360 }
 361
 362 show_in_reg(in_min);
 363 show_in_reg(in_max);
 364
 365 #define store_in_reg(REG, reg) \
 366 static ssize_t store_in_##reg(struct device *dev, \
 367                                 struct device_attribute *attr, \
 368                                 const char *buf, size_t count) \
 369 { \
 370         struct sensor_device_attribute *sensor_attr \
 371                         = to_sensor_dev_attr(attr); \
 372         int nr = sensor_attr->index; \
 373         struct i2c_client *client = to_i2c_client(dev); \
 374         struct w83792d_data *data = i2c_get_clientdata(client); \
 375         unsigned long val; \
 376         int err = kstrtoul(buf, 10, &val); \
 377         if (err) \
 378                 return err; \
 379         mutex_lock(&data->update_lock); \
 380         data->in_##reg[nr] = clamp_val(IN_TO_REG(nr, val) / 4, 0, 255); \
 381         w83792d_write_value(client, W83792D_REG_IN_##REG[nr], \
 382                             data->in_##reg[nr]); \
 383         mutex_unlock(&data->update_lock); \
 384          \
 385         return count; \
 386 }
 387 store_in_reg(MIN, min);
 388 store_in_reg(MAX, max);
 389
 390 #define show_fan_reg(reg) \
 391 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 392                         char *buf) \
 393 { \
 394         struct sensor_device_attribute *sensor_attr \
 395                         = to_sensor_dev_attr(attr); \
 396         int nr = sensor_attr->index - 1; \
 397         struct w83792d_data *data = w83792d_update_device(dev); \
 398         return sprintf(buf, "%d\n", \
 399                 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 400 }
 401
 402 show_fan_reg(fan);
 403 show_fan_reg(fan_min);
 404
 405 static ssize_t
 406 store_fan_min(struct device *dev, struct device_attribute *attr,
 407                 const char *buf, size_t count)
 408 {
 409         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 410         int nr = sensor_attr->index - 1;
 411         struct i2c_client *client = to_i2c_client(dev);
 412         struct w83792d_data *data = i2c_get_clientdata(client);
 413         unsigned long val;
 414         int err;
 415
 416         err = kstrtoul(buf, 10, &val);
 417         if (err)
 418                 return err;
 419
 420         mutex_lock(&data->update_lock);
 421         data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 422         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
 423                                 data->fan_min[nr]);
 424         mutex_unlock(&data->update_lock);
 425
 426         return count;
 427 }
 428
 429 static ssize_t
 430 show_fan_div(struct device *dev, struct device_attribute *attr,
 431                 char *buf)
 432 {
 433         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 434         int nr = sensor_attr->index;
 435         struct w83792d_data *data = w83792d_update_device(dev);
 436         return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
 437 }
 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  */
 445 static ssize_t
 446 store_fan_div(struct device *dev, struct device_attribute *attr,
 447                 const char *buf, size_t count)
 448 {
 449         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 450         int nr = sensor_attr->index - 1;
 451         struct i2c_client *client = to_i2c_client(dev);
 452         struct w83792d_data *data = i2c_get_clientdata(client);
 453         unsigned long min;
 454         /*u8 reg;*/
 455         u8 fan_div_reg = 0;
 456         u8 tmp_fan_div;
 457         unsigned long val;
 458         int err;
 459
 460         err = kstrtoul(buf, 10, &val);
 461         if (err)
 462                 return err;
 463
 464         /* Save fan_min */
 465         mutex_lock(&data->update_lock);
 466         min = FAN_FROM_REG(data->fan_min[nr],
 467                            DIV_FROM_REG(data->fan_div[nr]));
 468
 469         data->fan_div[nr] = DIV_TO_REG(val);
 470
 471         fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
 472         fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
 473         tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
 474                                         : ((data->fan_div[nr]) & 0x07);
 475         w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
 476                                         fan_div_reg | tmp_fan_div);
 477
 478         /* Restore fan_min */
 479         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 480         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
 481         mutex_unlock(&data->update_lock);
 482
 483         return count;
 484 }
 485
 486 /* read/write the temperature1, includes measured value and limits */
 487
 488 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
 489                                 char *buf)
 490 {
 491         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 492         int nr = sensor_attr->index;
 493         struct w83792d_data *data = w83792d_update_device(dev);
 494         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
 495 }
 496
 497 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 498                                 const char *buf, size_t count)
 499 {
 500         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 501         int nr = sensor_attr->index;
 502         struct i2c_client *client = to_i2c_client(dev);
 503         struct w83792d_data *data = i2c_get_clientdata(client);
 504         long val;
 505         int err;
 506
 507         err = kstrtol(buf, 10, &val);
 508         if (err)
 509                 return err;
 510
 511         mutex_lock(&data->update_lock);
 512         data->temp1[nr] = TEMP1_TO_REG(val);
 513         w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 514                 data->temp1[nr]);
 515         mutex_unlock(&data->update_lock);
 516
 517         return count;
 518 }
 519
 520 /* read/write the temperature2-3, includes measured value and limits */
 521
 522 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
 523                                 char *buf)
 524 {
 525         struct sensor_device_attribute_2 *sensor_attr
 526           = to_sensor_dev_attr_2(attr);
 527         int nr = sensor_attr->nr;
 528         int index = sensor_attr->index;
 529         struct w83792d_data *data = w83792d_update_device(dev);
 530         return sprintf(buf, "%ld\n",
 531                 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
 532                         data->temp_add[nr][index+1]));
 533 }
 534
 535 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 536                                 const char *buf, size_t count)
 537 {
 538         struct sensor_device_attribute_2 *sensor_attr
 539           = to_sensor_dev_attr_2(attr);
 540         int nr = sensor_attr->nr;
 541         int index = sensor_attr->index;
 542         struct i2c_client *client = to_i2c_client(dev);
 543         struct w83792d_data *data = i2c_get_clientdata(client);
 544         long val;
 545         int err;
 546
 547         err = kstrtol(buf, 10, &val);
 548         if (err)
 549                 return err;
 550
 551         mutex_lock(&data->update_lock);
 552         data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 553         data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 554         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 555                 data->temp_add[nr][index]);
 556         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 557                 data->temp_add[nr][index+1]);
 558         mutex_unlock(&data->update_lock);
 559
 560         return count;
 561 }
 562
 563 /* get realtime status of all sensors items: voltage, temp, fan */
 564 static ssize_t
 565 alarms_show(struct device *dev, struct device_attribute *attr, char *buf)
 566 {
 567         struct w83792d_data *data = w83792d_update_device(dev);
 568         return sprintf(buf, "%d\n", data->alarms);
 569 }
 570
 571 static ssize_t show_alarm(struct device *dev,
 572                           struct device_attribute *attr, char *buf)
 573 {
 574         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 575         int nr = sensor_attr->index;
 576         struct w83792d_data *data = w83792d_update_device(dev);
 577         return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
 578 }
 579
 580 static ssize_t
 581 show_pwm(struct device *dev, struct device_attribute *attr,
 582                 char *buf)
 583 {
 584         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 585         int nr = sensor_attr->index;
 586         struct w83792d_data *data = w83792d_update_device(dev);
 587         return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 588 }
 589
 590 static ssize_t
 591 show_pwmenable(struct device *dev, struct device_attribute *attr,
 592                         char *buf)
 593 {
 594         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 595         int nr = sensor_attr->index - 1;
 596         struct w83792d_data *data = w83792d_update_device(dev);
 597         long pwm_enable_tmp = 1;
 598
 599         switch (data->pwmenable[nr]) {
 600         case 0:
 601                 pwm_enable_tmp = 1; /* manual mode */
 602                 break;
 603         case 1:
 604                 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
 605                 break;
 606         case 2:
 607                 pwm_enable_tmp = 2; /* Smart Fan II */
 608                 break;
 609         }
 610
 611         return sprintf(buf, "%ld\n", pwm_enable_tmp);
 612 }
 613
 614 static ssize_t
 615 store_pwm(struct device *dev, struct device_attribute *attr,
 616                 const char *buf, size_t count)
 617 {
 618         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 619         int nr = sensor_attr->index;
 620         struct i2c_client *client = to_i2c_client(dev);
 621         struct w83792d_data *data = i2c_get_clientdata(client);
 622         unsigned long val;
 623         int err;
 624
 625         err = kstrtoul(buf, 10, &val);
 626         if (err)
 627                 return err;
 628         val = clamp_val(val, 0, 255) >> 4;
 629
 630         mutex_lock(&data->update_lock);
 631         val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
 632         data->pwm[nr] = val;
 633         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 634         mutex_unlock(&data->update_lock);
 635
 636         return count;
 637 }
 638
 639 static ssize_t
 640 store_pwmenable(struct device *dev, struct device_attribute *attr,
 641                         const char *buf, size_t count)
 642 {
 643         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 644         int nr = sensor_attr->index - 1;
 645         struct i2c_client *client = to_i2c_client(dev);
 646         struct w83792d_data *data = i2c_get_clientdata(client);
 647         u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 648         unsigned long val;
 649         int err;
 650
 651         err = kstrtoul(buf, 10, &val);
 652         if (err)
 653                 return err;
 654
 655         if (val < 1 || val > 3)
 656                 return -EINVAL;
 657
 658         mutex_lock(&data->update_lock);
 659         switch (val) {
 660         case 1:
 661                 data->pwmenable[nr] = 0; /* manual mode */
 662                 break;
 663         case 2:
 664                 data->pwmenable[nr] = 2; /* Smart Fan II */
 665                 break;
 666         case 3:
 667                 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 668                 break;
 669         }
 670         cfg1_tmp = data->pwmenable[0];
 671         cfg2_tmp = (data->pwmenable[1]) << 2;
 672         cfg3_tmp = (data->pwmenable[2]) << 4;
 673         cfg4_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG) & 0xc0;
 674         fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 675         w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
 676         mutex_unlock(&data->update_lock);
 677
 678         return count;
 679 }
 680
 681 static ssize_t
 682 show_pwm_mode(struct device *dev, struct device_attribute *attr,
 683                         char *buf)
 684 {
 685         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 686         int nr = sensor_attr->index;
 687         struct w83792d_data *data = w83792d_update_device(dev);
 688         return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 689 }
 690
 691 static ssize_t
 692 store_pwm_mode(struct device *dev, struct device_attribute *attr,
 693                         const char *buf, size_t count)
 694 {
 695         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 696         int nr = sensor_attr->index;
 697         struct i2c_client *client = to_i2c_client(dev);
 698         struct w83792d_data *data = i2c_get_clientdata(client);
 699         unsigned long val;
 700         int err;
 701
 702         err = kstrtoul(buf, 10, &val);
 703         if (err)
 704                 return err;
 705         if (val > 1)
 706                 return -EINVAL;
 707
 708         mutex_lock(&data->update_lock);
 709         data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
 710         if (val) {                      /* PWM mode */
 711                 data->pwm[nr] |= 0x80;
 712         } else {                        /* DC mode */
 713                 data->pwm[nr] &= 0x7f;
 714         }
 715         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 716         mutex_unlock(&data->update_lock);
 717
 718         return count;
 719 }
 720
 721 static ssize_t
 722 intrusion0_alarm_show(struct device *dev, struct device_attribute *attr,
 723                       char *buf)
 724 {
 725         struct w83792d_data *data = w83792d_update_device(dev);
 726         return sprintf(buf, "%d\n", data->chassis);
 727 }
 728
 729 static ssize_t
 730 intrusion0_alarm_store(struct device *dev, struct device_attribute *attr,
 731                        const char *buf, size_t count)
 732 {
 733         struct i2c_client *client = to_i2c_client(dev);
 734         struct w83792d_data *data = i2c_get_clientdata(client);
 735         unsigned long val;
 736         u8 reg;
 737
 738         if (kstrtoul(buf, 10, &val) || val != 0)
 739                 return -EINVAL;
 740
 741         mutex_lock(&data->update_lock);
 742         reg = w83792d_read_value(client, W83792D_REG_CHASSIS_CLR);
 743         w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, reg | 0x80);
 744         data->valid = 0;                /* Force cache refresh */
 745         mutex_unlock(&data->update_lock);
 746
 747         return count;
 748 }
 749
 750 /* For Smart Fan I / Thermal Cruise */
 751 static ssize_t
 752 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 753                         char *buf)
 754 {
 755         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 756         int nr = sensor_attr->index;
 757         struct w83792d_data *data = w83792d_update_device(dev);
 758         return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 759 }
 760
 761 static ssize_t
 762 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 763                         const char *buf, size_t count)
 764 {
 765         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 766         int nr = sensor_attr->index - 1;
 767         struct i2c_client *client = to_i2c_client(dev);
 768         struct w83792d_data *data = i2c_get_clientdata(client);
 769         u8 target_tmp = 0, target_mask = 0;
 770         unsigned long val;
 771         int err;
 772
 773         err = kstrtoul(buf, 10, &val);
 774         if (err)
 775                 return err;
 776
 777         target_tmp = val;
 778         target_tmp = target_tmp & 0x7f;
 779         mutex_lock(&data->update_lock);
 780         target_mask = w83792d_read_value(client,
 781                                          W83792D_REG_THERMAL[nr]) & 0x80;
 782         data->thermal_cruise[nr] = clamp_val(target_tmp, 0, 255);
 783         w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 784                 (data->thermal_cruise[nr]) | target_mask);
 785         mutex_unlock(&data->update_lock);
 786
 787         return count;
 788 }
 789
 790 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
 791 static ssize_t
 792 show_tolerance(struct device *dev, struct device_attribute *attr,
 793                 char *buf)
 794 {
 795         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 796         int nr = sensor_attr->index;
 797         struct w83792d_data *data = w83792d_update_device(dev);
 798         return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 799 }
 800
 801 static ssize_t
 802 store_tolerance(struct device *dev, struct device_attribute *attr,
 803                 const char *buf, size_t count)
 804 {
 805         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 806         int nr = sensor_attr->index - 1;
 807         struct i2c_client *client = to_i2c_client(dev);
 808         struct w83792d_data *data = i2c_get_clientdata(client);
 809         u8 tol_tmp, tol_mask;
 810         unsigned long val;
 811         int err;
 812
 813         err = kstrtoul(buf, 10, &val);
 814         if (err)
 815                 return err;
 816
 817         mutex_lock(&data->update_lock);
 818         tol_mask = w83792d_read_value(client,
 819                 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 820         tol_tmp = clamp_val(val, 0, 15);
 821         tol_tmp &= 0x0f;
 822         data->tolerance[nr] = tol_tmp;
 823         if (nr == 1)
 824                 tol_tmp <<= 4;
 825         w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 826                 tol_mask | tol_tmp);
 827         mutex_unlock(&data->update_lock);
 828
 829         return count;
 830 }
 831
 832 /* For Smart Fan II */
 833 static ssize_t
 834 show_sf2_point(struct device *dev, struct device_attribute *attr,
 835                 char *buf)
 836 {
 837         struct sensor_device_attribute_2 *sensor_attr
 838           = to_sensor_dev_attr_2(attr);
 839         int nr = sensor_attr->nr;
 840         int index = sensor_attr->index;
 841         struct w83792d_data *data = w83792d_update_device(dev);
 842         return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 843 }
 844
 845 static ssize_t
 846 store_sf2_point(struct device *dev, struct device_attribute *attr,
 847                 const char *buf, size_t count)
 848 {
 849         struct sensor_device_attribute_2 *sensor_attr
 850           = to_sensor_dev_attr_2(attr);
 851         int nr = sensor_attr->nr - 1;
 852         int index = sensor_attr->index - 1;
 853         struct i2c_client *client = to_i2c_client(dev);
 854         struct w83792d_data *data = i2c_get_clientdata(client);
 855         u8 mask_tmp = 0;
 856         unsigned long val;
 857         int err;
 858
 859         err = kstrtoul(buf, 10, &val);
 860         if (err)
 861                 return err;
 862
 863         mutex_lock(&data->update_lock);
 864         data->sf2_points[index][nr] = clamp_val(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
 879           = to_sensor_dev_attr_2(attr);
 880         int nr = sensor_attr->nr;
 881         int index = sensor_attr->index;
 882         struct w83792d_data *data = w83792d_update_device(dev);
 883         return sprintf(buf, "%d\n",
 884                         (((data->sf2_levels[index-1][nr]) * 100) / 15));
 885 }
 886
 887 static ssize_t
 888 store_sf2_level(struct device *dev, struct device_attribute *attr,
 889                 const char *buf, size_t count)
 890 {
 891         struct sensor_device_attribute_2 *sensor_attr
 892           = to_sensor_dev_attr_2(attr);
 893         int nr = sensor_attr->nr;
 894         int index = sensor_attr->index - 1;
 895         struct i2c_client *client = to_i2c_client(dev);
 896         struct w83792d_data *data = i2c_get_clientdata(client);
 897         u8 mask_tmp = 0, level_tmp = 0;
 898         unsigned long val;
 899         int err;
 900
 901         err = kstrtoul(buf, 10, &val);
 902         if (err)
 903                 return err;
 904
 905         mutex_lock(&data->update_lock);
 906         data->sf2_levels[index][nr] = clamp_val((val * 15) / 100, 0, 15);
 907         mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 908                 & ((nr == 3) ? 0xf0 : 0x0f);
 909         if (nr == 3)
 910                 level_tmp = data->sf2_levels[index][nr];
 911         else
 912                 level_tmp = data->sf2_levels[index][nr] << 4;
 913         w83792d_write_value(client, W83792D_REG_LEVELS[index][nr],
 914                             level_tmp | mask_tmp);
 915         mutex_unlock(&data->update_lock);
 916
 917         return count;
 918 }
 919
 920
 921 static int
 922 w83792d_detect_subclients(struct i2c_client *new_client)
 923 {
 924         int i, id;
 925         int address = new_client->addr;
 926         u8 val;
 927         struct i2c_adapter *adapter = new_client->adapter;
 928
 929         id = i2c_adapter_id(adapter);
 930         if (force_subclients[0] == id && force_subclients[1] == address) {
 931                 for (i = 2; i <= 3; i++) {
 932                         if (force_subclients[i] < 0x48 ||
 933                             force_subclients[i] > 0x4f) {
 934                                 dev_err(&new_client->dev,
 935                                         "invalid subclient address %d; must be 0x48-0x4f\n",
 936                                         force_subclients[i]);
 937                                 return -ENODEV;
 938                         }
 939                 }
 940                 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
 941                                         (force_subclients[2] & 0x07) |
 942                                         ((force_subclients[3] & 0x07) << 4));
 943         }
 944
 945         val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
 946
 947         if (!(val & 0x88) && (val & 0x7) == ((val >> 4) & 0x7)) {
 948                 dev_err(&new_client->dev,
 949                         "duplicate addresses 0x%x, use force_subclient\n", 0x48 + (val & 0x7));
 950                 return -ENODEV;
 951         }
 952
 953         if (!(val & 0x08))
 954                 devm_i2c_new_dummy_device(&new_client->dev, adapter, 0x48 + (val & 0x7));
 955
 956         if (!(val & 0x80))
 957                 devm_i2c_new_dummy_device(&new_client->dev, adapter, 0x48 + ((val >> 4) & 0x7));
 958
 959         return 0;
 960 }
 961
 962 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 963 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 964 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 965 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 966 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
 967 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
 968 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
 969 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
 970 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
 971 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
 972                         show_in_min, store_in_min, 0);
 973 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
 974                         show_in_min, store_in_min, 1);
 975 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
 976                         show_in_min, store_in_min, 2);
 977 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
 978                         show_in_min, store_in_min, 3);
 979 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
 980                         show_in_min, store_in_min, 4);
 981 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
 982                         show_in_min, store_in_min, 5);
 983 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
 984                         show_in_min, store_in_min, 6);
 985 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
 986                         show_in_min, store_in_min, 7);
 987 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
 988                         show_in_min, store_in_min, 8);
 989 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
 990                         show_in_max, store_in_max, 0);
 991 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
 992                         show_in_max, store_in_max, 1);
 993 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
 994                         show_in_max, store_in_max, 2);
 995 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
 996                         show_in_max, store_in_max, 3);
 997 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
 998                         show_in_max, store_in_max, 4);
 999 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
1000                         show_in_max, store_in_max, 5);
1001 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
1002                         show_in_max, store_in_max, 6);
1003 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
1004                         show_in_max, store_in_max, 7);
1005 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
1006                         show_in_max, store_in_max, 8);
1007 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
1008 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
1009 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
1010 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1011                         show_temp1, store_temp1, 0, 1);
1012 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
1013                         store_temp23, 0, 2);
1014 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
1015                         store_temp23, 1, 2);
1016 static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1017                         show_temp1, store_temp1, 0, 2);
1018 static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1019                         show_temp23, store_temp23, 0, 4);
1020 static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1021                         show_temp23, store_temp23, 1, 4);
1022 static DEVICE_ATTR_RO(alarms);
1023 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
1024 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
1025 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
1026 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
1027 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1028 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1029 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1030 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1031 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1032 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1033 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1034 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1035 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1036 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1037 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1038 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1039 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1040 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1041 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1042 static DEVICE_ATTR_RW(intrusion0_alarm);
1043 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1044 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1045 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1046 static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3);
1047 static SENSOR_DEVICE_ATTR(pwm5, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 4);
1048 static SENSOR_DEVICE_ATTR(pwm6, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 5);
1049 static SENSOR_DEVICE_ATTR(pwm7, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 6);
1050 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1051                         show_pwmenable, store_pwmenable, 1);
1052 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1053                         show_pwmenable, store_pwmenable, 2);
1054 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1055                         show_pwmenable, store_pwmenable, 3);
1056 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1057                         show_pwm_mode, store_pwm_mode, 0);
1058 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1059                         show_pwm_mode, store_pwm_mode, 1);
1060 static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1061                         show_pwm_mode, store_pwm_mode, 2);
1062 static SENSOR_DEVICE_ATTR(pwm4_mode, S_IWUSR | S_IRUGO,
1063                         show_pwm_mode, store_pwm_mode, 3);
1064 static SENSOR_DEVICE_ATTR(pwm5_mode, S_IWUSR | S_IRUGO,
1065                         show_pwm_mode, store_pwm_mode, 4);
1066 static SENSOR_DEVICE_ATTR(pwm6_mode, S_IWUSR | S_IRUGO,
1067                         show_pwm_mode, store_pwm_mode, 5);
1068 static SENSOR_DEVICE_ATTR(pwm7_mode, S_IWUSR | S_IRUGO,
1069                         show_pwm_mode, store_pwm_mode, 6);
1070 static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1071                         show_tolerance, store_tolerance, 1);
1072 static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1073                         show_tolerance, store_tolerance, 2);
1074 static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1075                         show_tolerance, store_tolerance, 3);
1076 static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1077                         show_thermal_cruise, store_thermal_cruise, 1);
1078 static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1079                         show_thermal_cruise, store_thermal_cruise, 2);
1080 static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1081                         show_thermal_cruise, store_thermal_cruise, 3);
1082 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1083                         show_sf2_point, store_sf2_point, 1, 1);
1084 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1085                         show_sf2_point, store_sf2_point, 2, 1);
1086 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1087                         show_sf2_point, store_sf2_point, 3, 1);
1088 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1089                         show_sf2_point, store_sf2_point, 4, 1);
1090 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1091                         show_sf2_point, store_sf2_point, 1, 2);
1092 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1093                         show_sf2_point, store_sf2_point, 2, 2);
1094 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1095                         show_sf2_point, store_sf2_point, 3, 2);
1096 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1097                         show_sf2_point, store_sf2_point, 4, 2);
1098 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1099                         show_sf2_point, store_sf2_point, 1, 3);
1100 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1101                         show_sf2_point, store_sf2_point, 2, 3);
1102 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1103                         show_sf2_point, store_sf2_point, 3, 3);
1104 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1105                         show_sf2_point, store_sf2_point, 4, 3);
1106 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1107                         show_sf2_level, store_sf2_level, 1, 1);
1108 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1109                         show_sf2_level, store_sf2_level, 2, 1);
1110 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1111                         show_sf2_level, store_sf2_level, 3, 1);
1112 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1113                         show_sf2_level, store_sf2_level, 1, 2);
1114 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1115                         show_sf2_level, store_sf2_level, 2, 2);
1116 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1117                         show_sf2_level, store_sf2_level, 3, 2);
1118 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1119                         show_sf2_level, store_sf2_level, 1, 3);
1120 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1121                         show_sf2_level, store_sf2_level, 2, 3);
1122 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1123                         show_sf2_level, store_sf2_level, 3, 3);
1124 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1125 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1126 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1127 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1128 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1129 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1130 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1131 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1132                         show_fan_min, store_fan_min, 1);
1133 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1134                         show_fan_min, store_fan_min, 2);
1135 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1136                         show_fan_min, store_fan_min, 3);
1137 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1138                         show_fan_min, store_fan_min, 4);
1139 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1140                         show_fan_min, store_fan_min, 5);
1141 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1142                         show_fan_min, store_fan_min, 6);
1143 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1144                         show_fan_min, store_fan_min, 7);
1145 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1146                         show_fan_div, store_fan_div, 1);
1147 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1148                         show_fan_div, store_fan_div, 2);
1149 static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1150                         show_fan_div, store_fan_div, 3);
1151 static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1152                         show_fan_div, store_fan_div, 4);
1153 static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1154                         show_fan_div, store_fan_div, 5);
1155 static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1156                         show_fan_div, store_fan_div, 6);
1157 static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1158                         show_fan_div, store_fan_div, 7);
1159
1160 static struct attribute *w83792d_attributes_fan[4][7] = {
1161         {
1162                 &sensor_dev_attr_fan4_input.dev_attr.attr,
1163                 &sensor_dev_attr_fan4_min.dev_attr.attr,
1164                 &sensor_dev_attr_fan4_div.dev_attr.attr,
1165                 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1166                 &sensor_dev_attr_pwm4.dev_attr.attr,
1167                 &sensor_dev_attr_pwm4_mode.dev_attr.attr,
1168                 NULL
1169         }, {
1170                 &sensor_dev_attr_fan5_input.dev_attr.attr,
1171                 &sensor_dev_attr_fan5_min.dev_attr.attr,
1172                 &sensor_dev_attr_fan5_div.dev_attr.attr,
1173                 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1174                 &sensor_dev_attr_pwm5.dev_attr.attr,
1175                 &sensor_dev_attr_pwm5_mode.dev_attr.attr,
1176                 NULL
1177         }, {
1178                 &sensor_dev_attr_fan6_input.dev_attr.attr,
1179                 &sensor_dev_attr_fan6_min.dev_attr.attr,
1180                 &sensor_dev_attr_fan6_div.dev_attr.attr,
1181                 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1182                 &sensor_dev_attr_pwm6.dev_attr.attr,
1183                 &sensor_dev_attr_pwm6_mode.dev_attr.attr,
1184                 NULL
1185         }, {
1186                 &sensor_dev_attr_fan7_input.dev_attr.attr,
1187                 &sensor_dev_attr_fan7_min.dev_attr.attr,
1188                 &sensor_dev_attr_fan7_div.dev_attr.attr,
1189                 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1190                 &sensor_dev_attr_pwm7.dev_attr.attr,
1191                 &sensor_dev_attr_pwm7_mode.dev_attr.attr,
1192                 NULL
1193         }
1194 };
1195
1196 static const struct attribute_group w83792d_group_fan[4] = {
1197         { .attrs = w83792d_attributes_fan[0] },
1198         { .attrs = w83792d_attributes_fan[1] },
1199         { .attrs = w83792d_attributes_fan[2] },
1200         { .attrs = w83792d_attributes_fan[3] },
1201 };
1202
1203 static struct attribute *w83792d_attributes[] = {
1204         &sensor_dev_attr_in0_input.dev_attr.attr,
1205         &sensor_dev_attr_in0_max.dev_attr.attr,
1206         &sensor_dev_attr_in0_min.dev_attr.attr,
1207         &sensor_dev_attr_in1_input.dev_attr.attr,
1208         &sensor_dev_attr_in1_max.dev_attr.attr,
1209         &sensor_dev_attr_in1_min.dev_attr.attr,
1210         &sensor_dev_attr_in2_input.dev_attr.attr,
1211         &sensor_dev_attr_in2_max.dev_attr.attr,
1212         &sensor_dev_attr_in2_min.dev_attr.attr,
1213         &sensor_dev_attr_in3_input.dev_attr.attr,
1214         &sensor_dev_attr_in3_max.dev_attr.attr,
1215         &sensor_dev_attr_in3_min.dev_attr.attr,
1216         &sensor_dev_attr_in4_input.dev_attr.attr,
1217         &sensor_dev_attr_in4_max.dev_attr.attr,
1218         &sensor_dev_attr_in4_min.dev_attr.attr,
1219         &sensor_dev_attr_in5_input.dev_attr.attr,
1220         &sensor_dev_attr_in5_max.dev_attr.attr,
1221         &sensor_dev_attr_in5_min.dev_attr.attr,
1222         &sensor_dev_attr_in6_input.dev_attr.attr,
1223         &sensor_dev_attr_in6_max.dev_attr.attr,
1224         &sensor_dev_attr_in6_min.dev_attr.attr,
1225         &sensor_dev_attr_in7_input.dev_attr.attr,
1226         &sensor_dev_attr_in7_max.dev_attr.attr,
1227         &sensor_dev_attr_in7_min.dev_attr.attr,
1228         &sensor_dev_attr_in8_input.dev_attr.attr,
1229         &sensor_dev_attr_in8_max.dev_attr.attr,
1230         &sensor_dev_attr_in8_min.dev_attr.attr,
1231         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1232         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1233         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1234         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1235         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1236         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1237         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1238         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1239         &sensor_dev_attr_in8_alarm.dev_attr.attr,
1240         &sensor_dev_attr_temp1_input.dev_attr.attr,
1241         &sensor_dev_attr_temp1_max.dev_attr.attr,
1242         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1243         &sensor_dev_attr_temp2_input.dev_attr.attr,
1244         &sensor_dev_attr_temp2_max.dev_attr.attr,
1245         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1246         &sensor_dev_attr_temp3_input.dev_attr.attr,
1247         &sensor_dev_attr_temp3_max.dev_attr.attr,
1248         &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1249         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1250         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1251         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1252         &sensor_dev_attr_pwm1.dev_attr.attr,
1253         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1254         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1255         &sensor_dev_attr_pwm2.dev_attr.attr,
1256         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1257         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1258         &sensor_dev_attr_pwm3.dev_attr.attr,
1259         &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1260         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1261         &dev_attr_alarms.attr,
1262         &dev_attr_intrusion0_alarm.attr,
1263         &sensor_dev_attr_tolerance1.dev_attr.attr,
1264         &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1265         &sensor_dev_attr_tolerance2.dev_attr.attr,
1266         &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1267         &sensor_dev_attr_tolerance3.dev_attr.attr,
1268         &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1269         &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1270         &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1271         &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1272         &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1273         &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1274         &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1275         &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1276         &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1277         &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1278         &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1279         &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1280         &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1281         &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1282         &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1283         &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1284         &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1285         &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1286         &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1287         &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1288         &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1289         &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1290         &sensor_dev_attr_fan1_input.dev_attr.attr,
1291         &sensor_dev_attr_fan1_min.dev_attr.attr,
1292         &sensor_dev_attr_fan1_div.dev_attr.attr,
1293         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1294         &sensor_dev_attr_fan2_input.dev_attr.attr,
1295         &sensor_dev_attr_fan2_min.dev_attr.attr,
1296         &sensor_dev_attr_fan2_div.dev_attr.attr,
1297         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1298         &sensor_dev_attr_fan3_input.dev_attr.attr,
1299         &sensor_dev_attr_fan3_min.dev_attr.attr,
1300         &sensor_dev_attr_fan3_div.dev_attr.attr,
1301         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1302         NULL
1303 };
1304
1305 static const struct attribute_group w83792d_group = {
1306         .attrs = w83792d_attributes,
1307 };
1308
1309 /* Return 0 if detection is successful, -ENODEV otherwise */
1310 static int
1311 w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)
1312 {
1313         struct i2c_adapter *adapter = client->adapter;
1314         int val1, val2;
1315         unsigned short address = client->addr;
1316
1317         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1318                 return -ENODEV;
1319
1320         if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
1321                 return -ENODEV;
1322
1323         val1 = w83792d_read_value(client, W83792D_REG_BANK);
1324         val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1325         /* Check for Winbond ID if in bank 0 */
1326         if (!(val1 & 0x07)) {  /* is Bank0 */
1327                 if ((!(val1 & 0x80) && val2 != 0xa3) ||
1328                     ((val1 & 0x80) && val2 != 0x5c))
1329                         return -ENODEV;
1330         }
1331         /*
1332          * If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1333          * should match
1334          */
1335         if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
1336                 return -ENODEV;
1337
1338         /*  Put it now into bank 0 and Vendor ID High Byte */
1339         w83792d_write_value(client,
1340                             W83792D_REG_BANK,
1341                             (w83792d_read_value(client,
1342                                 W83792D_REG_BANK) & 0x78) | 0x80);
1343
1344         /* Determine the chip type. */
1345         val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1346         val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1347         if (val1 != 0x7a || val2 != 0x5c)
1348                 return -ENODEV;
1349
1350         strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
1351
1352         return 0;
1353 }
1354
1355 static int
1356 w83792d_probe(struct i2c_client *client, const struct i2c_device_id *id)
1357 {
1358         struct w83792d_data *data;
1359         struct device *dev = &client->dev;
1360         int i, val1, err;
1361
1362         data = devm_kzalloc(dev, sizeof(struct w83792d_data), GFP_KERNEL);
1363         if (!data)
1364                 return -ENOMEM;
1365
1366         i2c_set_clientdata(client, data);
1367         mutex_init(&data->update_lock);
1368
1369         err = w83792d_detect_subclients(client);
1370         if (err)
1371                 return err;
1372
1373         /* Initialize the chip */
1374         w83792d_init_client(client);
1375
1376         /* A few vars need to be filled upon startup */
1377         for (i = 0; i < 7; i++) {
1378                 data->fan_min[i] = w83792d_read_value(client,
1379                                         W83792D_REG_FAN_MIN[i]);
1380         }
1381
1382         /* Register sysfs hooks */
1383         err = sysfs_create_group(&dev->kobj, &w83792d_group);
1384         if (err)
1385                 return err;
1386
1387         /*
1388          * Read GPIO enable register to check if pins for fan 4,5 are used as
1389          * GPIO
1390          */
1391         val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1392
1393         if (!(val1 & 0x40)) {
1394                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[0]);
1395                 if (err)
1396                         goto exit_remove_files;
1397         }
1398
1399         if (!(val1 & 0x20)) {
1400                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[1]);
1401                 if (err)
1402                         goto exit_remove_files;
1403         }
1404
1405         val1 = w83792d_read_value(client, W83792D_REG_PIN);
1406         if (val1 & 0x40) {
1407                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[2]);
1408                 if (err)
1409                         goto exit_remove_files;
1410         }
1411
1412         if (val1 & 0x04) {
1413                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[3]);
1414                 if (err)
1415                         goto exit_remove_files;
1416         }
1417
1418         data->hwmon_dev = hwmon_device_register(dev);
1419         if (IS_ERR(data->hwmon_dev)) {
1420                 err = PTR_ERR(data->hwmon_dev);
1421                 goto exit_remove_files;
1422         }
1423
1424         return 0;
1425
1426 exit_remove_files:
1427         sysfs_remove_group(&dev->kobj, &w83792d_group);
1428         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1429                 sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1430         return err;
1431 }
1432
1433 static int
1434 w83792d_remove(struct i2c_client *client)
1435 {
1436         struct w83792d_data *data = i2c_get_clientdata(client);
1437         int i;
1438
1439         hwmon_device_unregister(data->hwmon_dev);
1440         sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1441         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1442                 sysfs_remove_group(&client->dev.kobj,
1443                                    &w83792d_group_fan[i]);
1444
1445         return 0;
1446 }
1447
1448 static void
1449 w83792d_init_client(struct i2c_client *client)
1450 {
1451         u8 temp2_cfg, temp3_cfg, vid_in_b;
1452
1453         if (init)
1454                 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1455
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          */
1463         vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1464         w83792d_write_value(client, W83792D_REG_VID_IN_B,
1465                             vid_in_b & 0xbf);
1466
1467         temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1468         temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1469         w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1470                                 temp2_cfg & 0xe6);
1471         w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1472                                 temp3_cfg & 0xe6);
1473
1474         /* Start monitoring */
1475         w83792d_write_value(client, W83792D_REG_CONFIG,
1476                             (w83792d_read_value(client,
1477                                                 W83792D_REG_CONFIG) & 0xf7)
1478                             | 0x01);
1479 }
1480
1481 static struct w83792d_data *w83792d_update_device(struct device *dev)
1482 {
1483         struct i2c_client *client = to_i2c_client(dev);
1484         struct w83792d_data *data = i2c_get_clientdata(client);
1485         int i, j;
1486         u8 reg_array_tmp[4], reg_tmp;
1487
1488         mutex_lock(&data->update_lock);
1489
1490         if (time_after
1491             (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1492             || time_before(jiffies, data->last_updated) || !data->valid) {
1493                 dev_dbg(dev, "Starting device update\n");
1494
1495                 /* Update the voltages measured value and limits */
1496                 for (i = 0; i < 9; i++) {
1497                         data->in[i] = w83792d_read_value(client,
1498                                                 W83792D_REG_IN[i]);
1499                         data->in_max[i] = w83792d_read_value(client,
1500                                                 W83792D_REG_IN_MAX[i]);
1501                         data->in_min[i] = w83792d_read_value(client,
1502                                                 W83792D_REG_IN_MIN[i]);
1503                 }
1504                 data->low_bits = w83792d_read_value(client,
1505                                                 W83792D_REG_LOW_BITS1) +
1506                                  (w83792d_read_value(client,
1507                                                 W83792D_REG_LOW_BITS2) << 8);
1508                 for (i = 0; i < 7; i++) {
1509                         /* Update the Fan measured value and limits */
1510                         data->fan[i] = w83792d_read_value(client,
1511                                                 W83792D_REG_FAN[i]);
1512                         data->fan_min[i] = w83792d_read_value(client,
1513                                                 W83792D_REG_FAN_MIN[i]);
1514                         /* Update the PWM/DC Value and PWM/DC flag */
1515                         data->pwm[i] = w83792d_read_value(client,
1516                                                 W83792D_REG_PWM[i]);
1517                 }
1518
1519                 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1520                 data->pwmenable[0] = reg_tmp & 0x03;
1521                 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1522                 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1523
1524                 for (i = 0; i < 3; i++) {
1525                         data->temp1[i] = w83792d_read_value(client,
1526                                                         W83792D_REG_TEMP1[i]);
1527                 }
1528                 for (i = 0; i < 2; i++) {
1529                         for (j = 0; j < 6; j++) {
1530                                 data->temp_add[i][j] = w83792d_read_value(
1531                                         client, W83792D_REG_TEMP_ADD[i][j]);
1532                         }
1533                 }
1534
1535                 /* Update the Fan Divisor */
1536                 for (i = 0; i < 4; i++) {
1537                         reg_array_tmp[i] = w83792d_read_value(client,
1538                                                         W83792D_REG_FAN_DIV[i]);
1539                 }
1540                 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1541                 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1542                 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1543                 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1544                 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1545                 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1546                 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1547
1548                 /* Update the realtime status */
1549                 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1550                         (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1551                         (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1552
1553                 /* Update CaseOpen status and it's CLR_CHS. */
1554                 data->chassis = (w83792d_read_value(client,
1555                         W83792D_REG_CHASSIS) >> 5) & 0x01;
1556
1557                 /* Update Thermal Cruise/Smart Fan I target value */
1558                 for (i = 0; i < 3; i++) {
1559                         data->thermal_cruise[i] =
1560                                 w83792d_read_value(client,
1561                                 W83792D_REG_THERMAL[i]) & 0x7f;
1562                 }
1563
1564                 /* Update Smart Fan I/II tolerance */
1565                 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1566                 data->tolerance[0] = reg_tmp & 0x0f;
1567                 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1568                 data->tolerance[2] = w83792d_read_value(client,
1569                                         W83792D_REG_TOLERANCE[2]) & 0x0f;
1570
1571                 /* Update Smart Fan II temperature points */
1572                 for (i = 0; i < 3; i++) {
1573                         for (j = 0; j < 4; j++) {
1574                                 data->sf2_points[i][j]
1575                                   = w83792d_read_value(client,
1576                                         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         for (i = 0; i < 2; i++) {
1629                 for (j = 0; j < 6; j++) {
1630                         dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1631                                                         data->temp_add[i][j]);
1632                 }
1633         }
1634
1635         for (i = 0; i < 7; i++)
1636                 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1637
1638         dev_dbg(dev, "==========End of the debug message...================\n");
1639         dev_dbg(dev, "\n");
1640 }
1641 #endif
1642
1643 module_i2c_driver(w83792d_driver);
1644
1645 MODULE_AUTHOR("Shane Huang (Winbond)");
1646 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1647 MODULE_LICENSE("GPL");