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         /* array of 2 pointers to subclients */
 268         struct i2c_client *lm75[2];
 269
 270         u8 in[9];               /* Register value */
 271         u8 in_max[9];           /* Register value */
 272         u8 in_min[9];           /* Register value */
 273         u16 low_bits;           /* Additional resolution to voltage in6-0 */
 274         u8 fan[7];              /* Register value */
 275         u8 fan_min[7];          /* Register value */
 276         u8 temp1[3];            /* current, over, thyst */
 277         u8 temp_add[2][6];      /* Register value */
 278         u8 fan_div[7];          /* Register encoding, shifted right */
 279         u8 pwm[7];              /* The 7 PWM outputs */
 280         u8 pwmenable[3];
 281         u32 alarms;             /* realtime status register encoding,combined */
 282         u8 chassis;             /* Chassis status */
 283         u8 thermal_cruise[3];   /* Smart FanI: Fan1,2,3 target value */
 284         u8 tolerance[3];        /* Fan1,2,3 tolerance(Smart Fan I/II) */
 285         u8 sf2_points[3][4];    /* Smart FanII: Fan1,2,3 temperature points */
 286         u8 sf2_levels[3][4];    /* Smart FanII: Fan1,2,3 duty cycle levels */
 287 };
 288
 289 static int w83792d_probe(struct i2c_client *client,
 290                          const struct i2c_device_id *id);
 291 static int w83792d_detect(struct i2c_client *client,
 292                           struct i2c_board_info *info);
 293 static int w83792d_remove(struct i2c_client *client);
 294 static struct w83792d_data *w83792d_update_device(struct device *dev);
 295
 296 #ifdef DEBUG
 297 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 298 #endif
 299
 300 static void w83792d_init_client(struct i2c_client *client);
 301
 302 static const struct i2c_device_id w83792d_id[] = {
 303         { "w83792d", 0 },
 304         { }
 305 };
 306 MODULE_DEVICE_TABLE(i2c, w83792d_id);
 307
 308 static struct i2c_driver w83792d_driver = {
 309         .class          = I2C_CLASS_HWMON,
 310         .driver = {
 311                 .name = "w83792d",
 312         },
 313         .probe          = w83792d_probe,
 314         .remove         = w83792d_remove,
 315         .id_table       = w83792d_id,
 316         .detect         = w83792d_detect,
 317         .address_list   = normal_i2c,
 318 };
 319
 320 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
 321 {
 322         /* in7 and in8 do not have low bits, but the formula still works */
 323         return (data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03);
 324 }
 325
 326 /*
 327  * The SMBus locks itself. The Winbond W83792D chip has a bank register,
 328  * but the driver only accesses registers in bank 0, so we don't have
 329  * to switch banks and lock access between switches.
 330  */
 331 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
 332 {
 333         return i2c_smbus_read_byte_data(client, reg);
 334 }
 335
 336 static inline int
 337 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
 338 {
 339         return i2c_smbus_write_byte_data(client, reg, value);
 340 }
 341
 342 /* following are the sysfs callback functions */
 343 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 344                         char *buf)
 345 {
 346         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 347         int nr = sensor_attr->index;
 348         struct w83792d_data *data = w83792d_update_device(dev);
 349         return sprintf(buf, "%ld\n",
 350                        IN_FROM_REG(nr, in_count_from_reg(nr, data)));
 351 }
 352
 353 #define show_in_reg(reg) \
 354 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 355                         char *buf) \
 356 { \
 357         struct sensor_device_attribute *sensor_attr \
 358                 = to_sensor_dev_attr(attr); \
 359         int nr = sensor_attr->index; \
 360         struct w83792d_data *data = w83792d_update_device(dev); \
 361         return sprintf(buf, "%ld\n", \
 362                        (long)(IN_FROM_REG(nr, data->reg[nr]) * 4)); \
 363 }
 364
 365 show_in_reg(in_min);
 366 show_in_reg(in_max);
 367
 368 #define store_in_reg(REG, reg) \
 369 static ssize_t store_in_##reg(struct device *dev, \
 370                                 struct device_attribute *attr, \
 371                                 const char *buf, size_t count) \
 372 { \
 373         struct sensor_device_attribute *sensor_attr \
 374                         = to_sensor_dev_attr(attr); \
 375         int nr = sensor_attr->index; \
 376         struct i2c_client *client = to_i2c_client(dev); \
 377         struct w83792d_data *data = i2c_get_clientdata(client); \
 378         unsigned long val; \
 379         int err = kstrtoul(buf, 10, &val); \
 380         if (err) \
 381                 return err; \
 382         mutex_lock(&data->update_lock); \
 383         data->in_##reg[nr] = clamp_val(IN_TO_REG(nr, val) / 4, 0, 255); \
 384         w83792d_write_value(client, W83792D_REG_IN_##REG[nr], \
 385                             data->in_##reg[nr]); \
 386         mutex_unlock(&data->update_lock); \
 387          \
 388         return count; \
 389 }
 390 store_in_reg(MIN, min);
 391 store_in_reg(MAX, max);
 392
 393 #define show_fan_reg(reg) \
 394 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 395                         char *buf) \
 396 { \
 397         struct sensor_device_attribute *sensor_attr \
 398                         = to_sensor_dev_attr(attr); \
 399         int nr = sensor_attr->index - 1; \
 400         struct w83792d_data *data = w83792d_update_device(dev); \
 401         return sprintf(buf, "%d\n", \
 402                 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 403 }
 404
 405 show_fan_reg(fan);
 406 show_fan_reg(fan_min);
 407
 408 static ssize_t
 409 store_fan_min(struct device *dev, struct device_attribute *attr,
 410                 const char *buf, size_t count)
 411 {
 412         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 413         int nr = sensor_attr->index - 1;
 414         struct i2c_client *client = to_i2c_client(dev);
 415         struct w83792d_data *data = i2c_get_clientdata(client);
 416         unsigned long val;
 417         int err;
 418
 419         err = kstrtoul(buf, 10, &val);
 420         if (err)
 421                 return err;
 422
 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 /*
 443  * Note: we save and restore the fan minimum here, because its value is
 444  * determined in part by the fan divisor.  This follows the principle of
 445  * least surprise; the user doesn't expect the fan minimum to change just
 446  * because the divisor changed.
 447  */
 448 static ssize_t
 449 store_fan_div(struct device *dev, struct device_attribute *attr,
 450                 const char *buf, size_t count)
 451 {
 452         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 453         int nr = sensor_attr->index - 1;
 454         struct i2c_client *client = to_i2c_client(dev);
 455         struct w83792d_data *data = i2c_get_clientdata(client);
 456         unsigned long min;
 457         /*u8 reg;*/
 458         u8 fan_div_reg = 0;
 459         u8 tmp_fan_div;
 460         unsigned long val;
 461         int err;
 462
 463         err = kstrtoul(buf, 10, &val);
 464         if (err)
 465                 return err;
 466
 467         /* Save fan_min */
 468         mutex_lock(&data->update_lock);
 469         min = FAN_FROM_REG(data->fan_min[nr],
 470                            DIV_FROM_REG(data->fan_div[nr]));
 471
 472         data->fan_div[nr] = DIV_TO_REG(val);
 473
 474         fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
 475         fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
 476         tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
 477                                         : ((data->fan_div[nr]) & 0x07);
 478         w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
 479                                         fan_div_reg | tmp_fan_div);
 480
 481         /* Restore fan_min */
 482         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 483         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
 484         mutex_unlock(&data->update_lock);
 485
 486         return count;
 487 }
 488
 489 /* read/write the temperature1, includes measured value and limits */
 490
 491 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
 492                                 char *buf)
 493 {
 494         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 495         int nr = sensor_attr->index;
 496         struct w83792d_data *data = w83792d_update_device(dev);
 497         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
 498 }
 499
 500 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 501                                 const char *buf, size_t count)
 502 {
 503         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 504         int nr = sensor_attr->index;
 505         struct i2c_client *client = to_i2c_client(dev);
 506         struct w83792d_data *data = i2c_get_clientdata(client);
 507         long val;
 508         int err;
 509
 510         err = kstrtol(buf, 10, &val);
 511         if (err)
 512                 return err;
 513
 514         mutex_lock(&data->update_lock);
 515         data->temp1[nr] = TEMP1_TO_REG(val);
 516         w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 517                 data->temp1[nr]);
 518         mutex_unlock(&data->update_lock);
 519
 520         return count;
 521 }
 522
 523 /* read/write the temperature2-3, includes measured value and limits */
 524
 525 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
 526                                 char *buf)
 527 {
 528         struct sensor_device_attribute_2 *sensor_attr
 529           = to_sensor_dev_attr_2(attr);
 530         int nr = sensor_attr->nr;
 531         int index = sensor_attr->index;
 532         struct w83792d_data *data = w83792d_update_device(dev);
 533         return sprintf(buf, "%ld\n",
 534                 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
 535                         data->temp_add[nr][index+1]));
 536 }
 537
 538 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 539                                 const char *buf, size_t count)
 540 {
 541         struct sensor_device_attribute_2 *sensor_attr
 542           = to_sensor_dev_attr_2(attr);
 543         int nr = sensor_attr->nr;
 544         int index = sensor_attr->index;
 545         struct i2c_client *client = to_i2c_client(dev);
 546         struct w83792d_data *data = i2c_get_clientdata(client);
 547         long val;
 548         int err;
 549
 550         err = kstrtol(buf, 10, &val);
 551         if (err)
 552                 return err;
 553
 554         mutex_lock(&data->update_lock);
 555         data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 556         data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 557         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 558                 data->temp_add[nr][index]);
 559         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 560                 data->temp_add[nr][index+1]);
 561         mutex_unlock(&data->update_lock);
 562
 563         return count;
 564 }
 565
 566 /* get realtime status of all sensors items: voltage, temp, fan */
 567 static ssize_t
 568 alarms_show(struct device *dev, struct device_attribute *attr, char *buf)
 569 {
 570         struct w83792d_data *data = w83792d_update_device(dev);
 571         return sprintf(buf, "%d\n", data->alarms);
 572 }
 573
 574 static ssize_t show_alarm(struct device *dev,
 575                           struct device_attribute *attr, char *buf)
 576 {
 577         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 578         int nr = sensor_attr->index;
 579         struct w83792d_data *data = w83792d_update_device(dev);
 580         return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
 581 }
 582
 583 static ssize_t
 584 show_pwm(struct device *dev, struct device_attribute *attr,
 585                 char *buf)
 586 {
 587         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 588         int nr = sensor_attr->index;
 589         struct w83792d_data *data = w83792d_update_device(dev);
 590         return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 591 }
 592
 593 static ssize_t
 594 show_pwmenable(struct device *dev, struct device_attribute *attr,
 595                         char *buf)
 596 {
 597         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 598         int nr = sensor_attr->index - 1;
 599         struct w83792d_data *data = w83792d_update_device(dev);
 600         long pwm_enable_tmp = 1;
 601
 602         switch (data->pwmenable[nr]) {
 603         case 0:
 604                 pwm_enable_tmp = 1; /* manual mode */
 605                 break;
 606         case 1:
 607                 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
 608                 break;
 609         case 2:
 610                 pwm_enable_tmp = 2; /* Smart Fan II */
 611                 break;
 612         }
 613
 614         return sprintf(buf, "%ld\n", pwm_enable_tmp);
 615 }
 616
 617 static ssize_t
 618 store_pwm(struct device *dev, struct device_attribute *attr,
 619                 const char *buf, size_t count)
 620 {
 621         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 622         int nr = sensor_attr->index;
 623         struct i2c_client *client = to_i2c_client(dev);
 624         struct w83792d_data *data = i2c_get_clientdata(client);
 625         unsigned long val;
 626         int err;
 627
 628         err = kstrtoul(buf, 10, &val);
 629         if (err)
 630                 return err;
 631         val = clamp_val(val, 0, 255) >> 4;
 632
 633         mutex_lock(&data->update_lock);
 634         val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
 635         data->pwm[nr] = val;
 636         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 637         mutex_unlock(&data->update_lock);
 638
 639         return count;
 640 }
 641
 642 static ssize_t
 643 store_pwmenable(struct device *dev, struct device_attribute *attr,
 644                         const char *buf, size_t count)
 645 {
 646         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 647         int nr = sensor_attr->index - 1;
 648         struct i2c_client *client = to_i2c_client(dev);
 649         struct w83792d_data *data = i2c_get_clientdata(client);
 650         u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 651         unsigned long val;
 652         int err;
 653
 654         err = kstrtoul(buf, 10, &val);
 655         if (err)
 656                 return err;
 657
 658         if (val < 1 || val > 3)
 659                 return -EINVAL;
 660
 661         mutex_lock(&data->update_lock);
 662         switch (val) {
 663         case 1:
 664                 data->pwmenable[nr] = 0; /* manual mode */
 665                 break;
 666         case 2:
 667                 data->pwmenable[nr] = 2; /* Smart Fan II */
 668                 break;
 669         case 3:
 670                 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 671                 break;
 672         }
 673         cfg1_tmp = data->pwmenable[0];
 674         cfg2_tmp = (data->pwmenable[1]) << 2;
 675         cfg3_tmp = (data->pwmenable[2]) << 4;
 676         cfg4_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG) & 0xc0;
 677         fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 678         w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
 679         mutex_unlock(&data->update_lock);
 680
 681         return count;
 682 }
 683
 684 static ssize_t
 685 show_pwm_mode(struct device *dev, struct device_attribute *attr,
 686                         char *buf)
 687 {
 688         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 689         int nr = sensor_attr->index;
 690         struct w83792d_data *data = w83792d_update_device(dev);
 691         return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 692 }
 693
 694 static ssize_t
 695 store_pwm_mode(struct device *dev, struct device_attribute *attr,
 696                         const char *buf, size_t count)
 697 {
 698         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 699         int nr = sensor_attr->index;
 700         struct i2c_client *client = to_i2c_client(dev);
 701         struct w83792d_data *data = i2c_get_clientdata(client);
 702         unsigned long val;
 703         int err;
 704
 705         err = kstrtoul(buf, 10, &val);
 706         if (err)
 707                 return err;
 708         if (val > 1)
 709                 return -EINVAL;
 710
 711         mutex_lock(&data->update_lock);
 712         data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
 713         if (val) {                      /* PWM mode */
 714                 data->pwm[nr] |= 0x80;
 715         } else {                        /* DC mode */
 716                 data->pwm[nr] &= 0x7f;
 717         }
 718         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 719         mutex_unlock(&data->update_lock);
 720
 721         return count;
 722 }
 723
 724 static ssize_t
 725 intrusion0_alarm_show(struct device *dev, struct device_attribute *attr,
 726                       char *buf)
 727 {
 728         struct w83792d_data *data = w83792d_update_device(dev);
 729         return sprintf(buf, "%d\n", data->chassis);
 730 }
 731
 732 static ssize_t
 733 intrusion0_alarm_store(struct device *dev, struct device_attribute *attr,
 734                        const char *buf, size_t count)
 735 {
 736         struct i2c_client *client = to_i2c_client(dev);
 737         struct w83792d_data *data = i2c_get_clientdata(client);
 738         unsigned long val;
 739         u8 reg;
 740
 741         if (kstrtoul(buf, 10, &val) || val != 0)
 742                 return -EINVAL;
 743
 744         mutex_lock(&data->update_lock);
 745         reg = w83792d_read_value(client, W83792D_REG_CHASSIS_CLR);
 746         w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, reg | 0x80);
 747         data->valid = 0;                /* Force cache refresh */
 748         mutex_unlock(&data->update_lock);
 749
 750         return count;
 751 }
 752
 753 /* For Smart Fan I / Thermal Cruise */
 754 static ssize_t
 755 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 756                         char *buf)
 757 {
 758         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 759         int nr = sensor_attr->index;
 760         struct w83792d_data *data = w83792d_update_device(dev);
 761         return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 762 }
 763
 764 static ssize_t
 765 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 766                         const char *buf, size_t count)
 767 {
 768         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 769         int nr = sensor_attr->index - 1;
 770         struct i2c_client *client = to_i2c_client(dev);
 771         struct w83792d_data *data = i2c_get_clientdata(client);
 772         u8 target_tmp = 0, target_mask = 0;
 773         unsigned long val;
 774         int err;
 775
 776         err = kstrtoul(buf, 10, &val);
 777         if (err)
 778                 return err;
 779
 780         target_tmp = val;
 781         target_tmp = target_tmp & 0x7f;
 782         mutex_lock(&data->update_lock);
 783         target_mask = w83792d_read_value(client,
 784                                          W83792D_REG_THERMAL[nr]) & 0x80;
 785         data->thermal_cruise[nr] = clamp_val(target_tmp, 0, 255);
 786         w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 787                 (data->thermal_cruise[nr]) | target_mask);
 788         mutex_unlock(&data->update_lock);
 789
 790         return count;
 791 }
 792
 793 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
 794 static ssize_t
 795 show_tolerance(struct device *dev, struct device_attribute *attr,
 796                 char *buf)
 797 {
 798         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 799         int nr = sensor_attr->index;
 800         struct w83792d_data *data = w83792d_update_device(dev);
 801         return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 802 }
 803
 804 static ssize_t
 805 store_tolerance(struct device *dev, struct device_attribute *attr,
 806                 const char *buf, size_t count)
 807 {
 808         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 809         int nr = sensor_attr->index - 1;
 810         struct i2c_client *client = to_i2c_client(dev);
 811         struct w83792d_data *data = i2c_get_clientdata(client);
 812         u8 tol_tmp, tol_mask;
 813         unsigned long val;
 814         int err;
 815
 816         err = kstrtoul(buf, 10, &val);
 817         if (err)
 818                 return err;
 819
 820         mutex_lock(&data->update_lock);
 821         tol_mask = w83792d_read_value(client,
 822                 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 823         tol_tmp = clamp_val(val, 0, 15);
 824         tol_tmp &= 0x0f;
 825         data->tolerance[nr] = tol_tmp;
 826         if (nr == 1)
 827                 tol_tmp <<= 4;
 828         w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 829                 tol_mask | tol_tmp);
 830         mutex_unlock(&data->update_lock);
 831
 832         return count;
 833 }
 834
 835 /* For Smart Fan II */
 836 static ssize_t
 837 show_sf2_point(struct device *dev, struct device_attribute *attr,
 838                 char *buf)
 839 {
 840         struct sensor_device_attribute_2 *sensor_attr
 841           = to_sensor_dev_attr_2(attr);
 842         int nr = sensor_attr->nr;
 843         int index = sensor_attr->index;
 844         struct w83792d_data *data = w83792d_update_device(dev);
 845         return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 846 }
 847
 848 static ssize_t
 849 store_sf2_point(struct device *dev, struct device_attribute *attr,
 850                 const char *buf, size_t count)
 851 {
 852         struct sensor_device_attribute_2 *sensor_attr
 853           = to_sensor_dev_attr_2(attr);
 854         int nr = sensor_attr->nr - 1;
 855         int index = sensor_attr->index - 1;
 856         struct i2c_client *client = to_i2c_client(dev);
 857         struct w83792d_data *data = i2c_get_clientdata(client);
 858         u8 mask_tmp = 0;
 859         unsigned long val;
 860         int err;
 861
 862         err = kstrtoul(buf, 10, &val);
 863         if (err)
 864                 return err;
 865
 866         mutex_lock(&data->update_lock);
 867         data->sf2_points[index][nr] = clamp_val(val, 0, 127);
 868         mask_tmp = w83792d_read_value(client,
 869                                         W83792D_REG_POINTS[index][nr]) & 0x80;
 870         w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 871                 mask_tmp|data->sf2_points[index][nr]);
 872         mutex_unlock(&data->update_lock);
 873
 874         return count;
 875 }
 876
 877 static ssize_t
 878 show_sf2_level(struct device *dev, struct device_attribute *attr,
 879                 char *buf)
 880 {
 881         struct sensor_device_attribute_2 *sensor_attr
 882           = to_sensor_dev_attr_2(attr);
 883         int nr = sensor_attr->nr;
 884         int index = sensor_attr->index;
 885         struct w83792d_data *data = w83792d_update_device(dev);
 886         return sprintf(buf, "%d\n",
 887                         (((data->sf2_levels[index-1][nr]) * 100) / 15));
 888 }
 889
 890 static ssize_t
 891 store_sf2_level(struct device *dev, struct device_attribute *attr,
 892                 const char *buf, size_t count)
 893 {
 894         struct sensor_device_attribute_2 *sensor_attr
 895           = to_sensor_dev_attr_2(attr);
 896         int nr = sensor_attr->nr;
 897         int index = sensor_attr->index - 1;
 898         struct i2c_client *client = to_i2c_client(dev);
 899         struct w83792d_data *data = i2c_get_clientdata(client);
 900         u8 mask_tmp = 0, level_tmp = 0;
 901         unsigned long val;
 902         int err;
 903
 904         err = kstrtoul(buf, 10, &val);
 905         if (err)
 906                 return err;
 907
 908         mutex_lock(&data->update_lock);
 909         data->sf2_levels[index][nr] = clamp_val((val * 15) / 100, 0, 15);
 910         mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 911                 & ((nr == 3) ? 0xf0 : 0x0f);
 912         if (nr == 3)
 913                 level_tmp = data->sf2_levels[index][nr];
 914         else
 915                 level_tmp = data->sf2_levels[index][nr] << 4;
 916         w83792d_write_value(client, W83792D_REG_LEVELS[index][nr],
 917                             level_tmp | mask_tmp);
 918         mutex_unlock(&data->update_lock);
 919
 920         return count;
 921 }
 922
 923
 924 static int
 925 w83792d_detect_subclients(struct i2c_client *new_client)
 926 {
 927         int i, id;
 928         int address = new_client->addr;
 929         u8 val;
 930         struct i2c_adapter *adapter = new_client->adapter;
 931         struct w83792d_data *data = i2c_get_clientdata(new_client);
 932
 933         id = i2c_adapter_id(adapter);
 934         if (force_subclients[0] == id && force_subclients[1] == address) {
 935                 for (i = 2; i <= 3; i++) {
 936                         if (force_subclients[i] < 0x48 ||
 937                             force_subclients[i] > 0x4f) {
 938                                 dev_err(&new_client->dev,
 939                                         "invalid subclient address %d; must be 0x48-0x4f\n",
 940                                         force_subclients[i]);
 941                                 return -ENODEV;
 942                         }
 943                 }
 944                 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
 945                                         (force_subclients[2] & 0x07) |
 946                                         ((force_subclients[3] & 0x07) << 4));
 947         }
 948
 949         val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
 950         if (!(val & 0x08))
 951                 data->lm75[0] = devm_i2c_new_dummy_device(&new_client->dev, adapter,
 952                                                           0x48 + (val & 0x7));
 953         if (!(val & 0x80)) {
 954                 if (!IS_ERR(data->lm75[0]) &&
 955                         ((val & 0x7) == ((val >> 4) & 0x7))) {
 956                         dev_err(&new_client->dev,
 957                                 "duplicate addresses 0x%x, use force_subclient\n",
 958                                 data->lm75[0]->addr);
 959                         return -ENODEV;
 960                 }
 961                 data->lm75[1] = devm_i2c_new_dummy_device(&new_client->dev, adapter,
 962                                                           0x48 + ((val >> 4) & 0x7));
 963         }
 964
 965         return 0;
 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_RO(alarms);
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_RW(intrusion0_alarm);
1049 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1050 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1051 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1052 static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3);
1053 static SENSOR_DEVICE_ATTR(pwm5, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 4);
1054 static SENSOR_DEVICE_ATTR(pwm6, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 5);
1055 static SENSOR_DEVICE_ATTR(pwm7, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 6);
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(pwm4_mode, S_IWUSR | S_IRUGO,
1069                         show_pwm_mode, store_pwm_mode, 3);
1070 static SENSOR_DEVICE_ATTR(pwm5_mode, S_IWUSR | S_IRUGO,
1071                         show_pwm_mode, store_pwm_mode, 4);
1072 static SENSOR_DEVICE_ATTR(pwm6_mode, S_IWUSR | S_IRUGO,
1073                         show_pwm_mode, store_pwm_mode, 5);
1074 static SENSOR_DEVICE_ATTR(pwm7_mode, S_IWUSR | S_IRUGO,
1075                         show_pwm_mode, store_pwm_mode, 6);
1076 static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1077                         show_tolerance, store_tolerance, 1);
1078 static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1079                         show_tolerance, store_tolerance, 2);
1080 static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1081                         show_tolerance, store_tolerance, 3);
1082 static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1083                         show_thermal_cruise, store_thermal_cruise, 1);
1084 static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1085                         show_thermal_cruise, store_thermal_cruise, 2);
1086 static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1087                         show_thermal_cruise, store_thermal_cruise, 3);
1088 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1089                         show_sf2_point, store_sf2_point, 1, 1);
1090 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1091                         show_sf2_point, store_sf2_point, 2, 1);
1092 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1093                         show_sf2_point, store_sf2_point, 3, 1);
1094 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1095                         show_sf2_point, store_sf2_point, 4, 1);
1096 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1097                         show_sf2_point, store_sf2_point, 1, 2);
1098 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1099                         show_sf2_point, store_sf2_point, 2, 2);
1100 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1101                         show_sf2_point, store_sf2_point, 3, 2);
1102 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1103                         show_sf2_point, store_sf2_point, 4, 2);
1104 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1105                         show_sf2_point, store_sf2_point, 1, 3);
1106 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1107                         show_sf2_point, store_sf2_point, 2, 3);
1108 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1109                         show_sf2_point, store_sf2_point, 3, 3);
1110 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1111                         show_sf2_point, store_sf2_point, 4, 3);
1112 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1113                         show_sf2_level, store_sf2_level, 1, 1);
1114 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1115                         show_sf2_level, store_sf2_level, 2, 1);
1116 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1117                         show_sf2_level, store_sf2_level, 3, 1);
1118 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1119                         show_sf2_level, store_sf2_level, 1, 2);
1120 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1121                         show_sf2_level, store_sf2_level, 2, 2);
1122 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1123                         show_sf2_level, store_sf2_level, 3, 2);
1124 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1125                         show_sf2_level, store_sf2_level, 1, 3);
1126 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1127                         show_sf2_level, store_sf2_level, 2, 3);
1128 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1129                         show_sf2_level, store_sf2_level, 3, 3);
1130 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1131 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1132 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1133 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1134 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1135 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1136 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1137 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1138                         show_fan_min, store_fan_min, 1);
1139 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1140                         show_fan_min, store_fan_min, 2);
1141 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1142                         show_fan_min, store_fan_min, 3);
1143 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1144                         show_fan_min, store_fan_min, 4);
1145 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1146                         show_fan_min, store_fan_min, 5);
1147 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1148                         show_fan_min, store_fan_min, 6);
1149 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1150                         show_fan_min, store_fan_min, 7);
1151 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1152                         show_fan_div, store_fan_div, 1);
1153 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1154                         show_fan_div, store_fan_div, 2);
1155 static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1156                         show_fan_div, store_fan_div, 3);
1157 static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1158                         show_fan_div, store_fan_div, 4);
1159 static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1160                         show_fan_div, store_fan_div, 5);
1161 static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1162                         show_fan_div, store_fan_div, 6);
1163 static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1164                         show_fan_div, store_fan_div, 7);
1165
1166 static struct attribute *w83792d_attributes_fan[4][7] = {
1167         {
1168                 &sensor_dev_attr_fan4_input.dev_attr.attr,
1169                 &sensor_dev_attr_fan4_min.dev_attr.attr,
1170                 &sensor_dev_attr_fan4_div.dev_attr.attr,
1171                 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1172                 &sensor_dev_attr_pwm4.dev_attr.attr,
1173                 &sensor_dev_attr_pwm4_mode.dev_attr.attr,
1174                 NULL
1175         }, {
1176                 &sensor_dev_attr_fan5_input.dev_attr.attr,
1177                 &sensor_dev_attr_fan5_min.dev_attr.attr,
1178                 &sensor_dev_attr_fan5_div.dev_attr.attr,
1179                 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1180                 &sensor_dev_attr_pwm5.dev_attr.attr,
1181                 &sensor_dev_attr_pwm5_mode.dev_attr.attr,
1182                 NULL
1183         }, {
1184                 &sensor_dev_attr_fan6_input.dev_attr.attr,
1185                 &sensor_dev_attr_fan6_min.dev_attr.attr,
1186                 &sensor_dev_attr_fan6_div.dev_attr.attr,
1187                 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1188                 &sensor_dev_attr_pwm6.dev_attr.attr,
1189                 &sensor_dev_attr_pwm6_mode.dev_attr.attr,
1190                 NULL
1191         }, {
1192                 &sensor_dev_attr_fan7_input.dev_attr.attr,
1193                 &sensor_dev_attr_fan7_min.dev_attr.attr,
1194                 &sensor_dev_attr_fan7_div.dev_attr.attr,
1195                 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1196                 &sensor_dev_attr_pwm7.dev_attr.attr,
1197                 &sensor_dev_attr_pwm7_mode.dev_attr.attr,
1198                 NULL
1199         }
1200 };
1201
1202 static const struct attribute_group w83792d_group_fan[4] = {
1203         { .attrs = w83792d_attributes_fan[0] },
1204         { .attrs = w83792d_attributes_fan[1] },
1205         { .attrs = w83792d_attributes_fan[2] },
1206         { .attrs = w83792d_attributes_fan[3] },
1207 };
1208
1209 static struct attribute *w83792d_attributes[] = {
1210         &sensor_dev_attr_in0_input.dev_attr.attr,
1211         &sensor_dev_attr_in0_max.dev_attr.attr,
1212         &sensor_dev_attr_in0_min.dev_attr.attr,
1213         &sensor_dev_attr_in1_input.dev_attr.attr,
1214         &sensor_dev_attr_in1_max.dev_attr.attr,
1215         &sensor_dev_attr_in1_min.dev_attr.attr,
1216         &sensor_dev_attr_in2_input.dev_attr.attr,
1217         &sensor_dev_attr_in2_max.dev_attr.attr,
1218         &sensor_dev_attr_in2_min.dev_attr.attr,
1219         &sensor_dev_attr_in3_input.dev_attr.attr,
1220         &sensor_dev_attr_in3_max.dev_attr.attr,
1221         &sensor_dev_attr_in3_min.dev_attr.attr,
1222         &sensor_dev_attr_in4_input.dev_attr.attr,
1223         &sensor_dev_attr_in4_max.dev_attr.attr,
1224         &sensor_dev_attr_in4_min.dev_attr.attr,
1225         &sensor_dev_attr_in5_input.dev_attr.attr,
1226         &sensor_dev_attr_in5_max.dev_attr.attr,
1227         &sensor_dev_attr_in5_min.dev_attr.attr,
1228         &sensor_dev_attr_in6_input.dev_attr.attr,
1229         &sensor_dev_attr_in6_max.dev_attr.attr,
1230         &sensor_dev_attr_in6_min.dev_attr.attr,
1231         &sensor_dev_attr_in7_input.dev_attr.attr,
1232         &sensor_dev_attr_in7_max.dev_attr.attr,
1233         &sensor_dev_attr_in7_min.dev_attr.attr,
1234         &sensor_dev_attr_in8_input.dev_attr.attr,
1235         &sensor_dev_attr_in8_max.dev_attr.attr,
1236         &sensor_dev_attr_in8_min.dev_attr.attr,
1237         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1238         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1239         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1240         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1241         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1242         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1243         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1244         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1245         &sensor_dev_attr_in8_alarm.dev_attr.attr,
1246         &sensor_dev_attr_temp1_input.dev_attr.attr,
1247         &sensor_dev_attr_temp1_max.dev_attr.attr,
1248         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1249         &sensor_dev_attr_temp2_input.dev_attr.attr,
1250         &sensor_dev_attr_temp2_max.dev_attr.attr,
1251         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1252         &sensor_dev_attr_temp3_input.dev_attr.attr,
1253         &sensor_dev_attr_temp3_max.dev_attr.attr,
1254         &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1255         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1256         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1257         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1258         &sensor_dev_attr_pwm1.dev_attr.attr,
1259         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1260         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1261         &sensor_dev_attr_pwm2.dev_attr.attr,
1262         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1263         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1264         &sensor_dev_attr_pwm3.dev_attr.attr,
1265         &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1266         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1267         &dev_attr_alarms.attr,
1268         &dev_attr_intrusion0_alarm.attr,
1269         &sensor_dev_attr_tolerance1.dev_attr.attr,
1270         &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1271         &sensor_dev_attr_tolerance2.dev_attr.attr,
1272         &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1273         &sensor_dev_attr_tolerance3.dev_attr.attr,
1274         &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1275         &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1276         &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1277         &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1278         &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1279         &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1280         &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1281         &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1282         &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1283         &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1284         &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1285         &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1286         &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1287         &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1288         &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1289         &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1290         &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1291         &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1292         &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1293         &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1294         &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1295         &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1296         &sensor_dev_attr_fan1_input.dev_attr.attr,
1297         &sensor_dev_attr_fan1_min.dev_attr.attr,
1298         &sensor_dev_attr_fan1_div.dev_attr.attr,
1299         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1300         &sensor_dev_attr_fan2_input.dev_attr.attr,
1301         &sensor_dev_attr_fan2_min.dev_attr.attr,
1302         &sensor_dev_attr_fan2_div.dev_attr.attr,
1303         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1304         &sensor_dev_attr_fan3_input.dev_attr.attr,
1305         &sensor_dev_attr_fan3_min.dev_attr.attr,
1306         &sensor_dev_attr_fan3_div.dev_attr.attr,
1307         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1308         NULL
1309 };
1310
1311 static const struct attribute_group w83792d_group = {
1312         .attrs = w83792d_attributes,
1313 };
1314
1315 /* Return 0 if detection is successful, -ENODEV otherwise */
1316 static int
1317 w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)
1318 {
1319         struct i2c_adapter *adapter = client->adapter;
1320         int val1, val2;
1321         unsigned short address = client->addr;
1322
1323         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1324                 return -ENODEV;
1325
1326         if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
1327                 return -ENODEV;
1328
1329         val1 = w83792d_read_value(client, W83792D_REG_BANK);
1330         val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1331         /* Check for Winbond ID if in bank 0 */
1332         if (!(val1 & 0x07)) {  /* is Bank0 */
1333                 if ((!(val1 & 0x80) && val2 != 0xa3) ||
1334                     ((val1 & 0x80) && val2 != 0x5c))
1335                         return -ENODEV;
1336         }
1337         /*
1338          * If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1339          * should match
1340          */
1341         if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
1342                 return -ENODEV;
1343
1344         /*  Put it now into bank 0 and Vendor ID High Byte */
1345         w83792d_write_value(client,
1346                             W83792D_REG_BANK,
1347                             (w83792d_read_value(client,
1348                                 W83792D_REG_BANK) & 0x78) | 0x80);
1349
1350         /* Determine the chip type. */
1351         val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1352         val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1353         if (val1 != 0x7a || val2 != 0x5c)
1354                 return -ENODEV;
1355
1356         strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
1357
1358         return 0;
1359 }
1360
1361 static int
1362 w83792d_probe(struct i2c_client *client, const struct i2c_device_id *id)
1363 {
1364         struct w83792d_data *data;
1365         struct device *dev = &client->dev;
1366         int i, val1, err;
1367
1368         data = devm_kzalloc(dev, sizeof(struct w83792d_data), GFP_KERNEL);
1369         if (!data)
1370                 return -ENOMEM;
1371
1372         i2c_set_clientdata(client, data);
1373         mutex_init(&data->update_lock);
1374
1375         err = w83792d_detect_subclients(client);
1376         if (err)
1377                 return err;
1378
1379         /* Initialize the chip */
1380         w83792d_init_client(client);
1381
1382         /* A few vars need to be filled upon startup */
1383         for (i = 0; i < 7; i++) {
1384                 data->fan_min[i] = w83792d_read_value(client,
1385                                         W83792D_REG_FAN_MIN[i]);
1386         }
1387
1388         /* Register sysfs hooks */
1389         err = sysfs_create_group(&dev->kobj, &w83792d_group);
1390         if (err)
1391                 return err;
1392
1393         /*
1394          * Read GPIO enable register to check if pins for fan 4,5 are used as
1395          * GPIO
1396          */
1397         val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1398
1399         if (!(val1 & 0x40)) {
1400                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[0]);
1401                 if (err)
1402                         goto exit_remove_files;
1403         }
1404
1405         if (!(val1 & 0x20)) {
1406                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[1]);
1407                 if (err)
1408                         goto exit_remove_files;
1409         }
1410
1411         val1 = w83792d_read_value(client, W83792D_REG_PIN);
1412         if (val1 & 0x40) {
1413                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[2]);
1414                 if (err)
1415                         goto exit_remove_files;
1416         }
1417
1418         if (val1 & 0x04) {
1419                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[3]);
1420                 if (err)
1421                         goto exit_remove_files;
1422         }
1423
1424         data->hwmon_dev = hwmon_device_register(dev);
1425         if (IS_ERR(data->hwmon_dev)) {
1426                 err = PTR_ERR(data->hwmon_dev);
1427                 goto exit_remove_files;
1428         }
1429
1430         return 0;
1431
1432 exit_remove_files:
1433         sysfs_remove_group(&dev->kobj, &w83792d_group);
1434         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1435                 sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1436         return err;
1437 }
1438
1439 static int
1440 w83792d_remove(struct i2c_client *client)
1441 {
1442         struct w83792d_data *data = i2c_get_clientdata(client);
1443         int i;
1444
1445         hwmon_device_unregister(data->hwmon_dev);
1446         sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1447         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1448                 sysfs_remove_group(&client->dev.kobj,
1449                                    &w83792d_group_fan[i]);
1450
1451         return 0;
1452 }
1453
1454 static void
1455 w83792d_init_client(struct i2c_client *client)
1456 {
1457         u8 temp2_cfg, temp3_cfg, vid_in_b;
1458
1459         if (init)
1460                 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1461
1462         /*
1463          * Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1464          * W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1465          * vin0/vin1 can be modified by user;
1466          * W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1467          * vin0/vin1 auto-updated, can NOT be modified by user.
1468          */
1469         vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1470         w83792d_write_value(client, W83792D_REG_VID_IN_B,
1471                             vid_in_b & 0xbf);
1472
1473         temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1474         temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1475         w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1476                                 temp2_cfg & 0xe6);
1477         w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1478                                 temp3_cfg & 0xe6);
1479
1480         /* Start monitoring */
1481         w83792d_write_value(client, W83792D_REG_CONFIG,
1482                             (w83792d_read_value(client,
1483                                                 W83792D_REG_CONFIG) & 0xf7)
1484                             | 0x01);
1485 }
1486
1487 static struct w83792d_data *w83792d_update_device(struct device *dev)
1488 {
1489         struct i2c_client *client = to_i2c_client(dev);
1490         struct w83792d_data *data = i2c_get_clientdata(client);
1491         int i, j;
1492         u8 reg_array_tmp[4], reg_tmp;
1493
1494         mutex_lock(&data->update_lock);
1495
1496         if (time_after
1497             (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1498             || time_before(jiffies, data->last_updated) || !data->valid) {
1499                 dev_dbg(dev, "Starting device update\n");
1500
1501                 /* Update the voltages measured value and limits */
1502                 for (i = 0; i < 9; i++) {
1503                         data->in[i] = w83792d_read_value(client,
1504                                                 W83792D_REG_IN[i]);
1505                         data->in_max[i] = w83792d_read_value(client,
1506                                                 W83792D_REG_IN_MAX[i]);
1507                         data->in_min[i] = w83792d_read_value(client,
1508                                                 W83792D_REG_IN_MIN[i]);
1509                 }
1510                 data->low_bits = w83792d_read_value(client,
1511                                                 W83792D_REG_LOW_BITS1) +
1512                                  (w83792d_read_value(client,
1513                                                 W83792D_REG_LOW_BITS2) << 8);
1514                 for (i = 0; i < 7; i++) {
1515                         /* Update the Fan measured value and limits */
1516                         data->fan[i] = w83792d_read_value(client,
1517                                                 W83792D_REG_FAN[i]);
1518                         data->fan_min[i] = w83792d_read_value(client,
1519                                                 W83792D_REG_FAN_MIN[i]);
1520                         /* Update the PWM/DC Value and PWM/DC flag */
1521                         data->pwm[i] = w83792d_read_value(client,
1522                                                 W83792D_REG_PWM[i]);
1523                 }
1524
1525                 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1526                 data->pwmenable[0] = reg_tmp & 0x03;
1527                 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1528                 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1529
1530                 for (i = 0; i < 3; i++) {
1531                         data->temp1[i] = w83792d_read_value(client,
1532                                                         W83792D_REG_TEMP1[i]);
1533                 }
1534                 for (i = 0; i < 2; i++) {
1535                         for (j = 0; j < 6; j++) {
1536                                 data->temp_add[i][j] = w83792d_read_value(
1537                                         client, W83792D_REG_TEMP_ADD[i][j]);
1538                         }
1539                 }
1540
1541                 /* Update the Fan Divisor */
1542                 for (i = 0; i < 4; i++) {
1543                         reg_array_tmp[i] = w83792d_read_value(client,
1544                                                         W83792D_REG_FAN_DIV[i]);
1545                 }
1546                 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1547                 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1548                 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1549                 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1550                 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1551                 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1552                 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1553
1554                 /* Update the realtime status */
1555                 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1556                         (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1557                         (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1558
1559                 /* Update CaseOpen status and it's CLR_CHS. */
1560                 data->chassis = (w83792d_read_value(client,
1561                         W83792D_REG_CHASSIS) >> 5) & 0x01;
1562
1563                 /* Update Thermal Cruise/Smart Fan I target value */
1564                 for (i = 0; i < 3; i++) {
1565                         data->thermal_cruise[i] =
1566                                 w83792d_read_value(client,
1567                                 W83792D_REG_THERMAL[i]) & 0x7f;
1568                 }
1569
1570                 /* Update Smart Fan I/II tolerance */
1571                 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1572                 data->tolerance[0] = reg_tmp & 0x0f;
1573                 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1574                 data->tolerance[2] = w83792d_read_value(client,
1575                                         W83792D_REG_TOLERANCE[2]) & 0x0f;
1576
1577                 /* Update Smart Fan II temperature points */
1578                 for (i = 0; i < 3; i++) {
1579                         for (j = 0; j < 4; j++) {
1580                                 data->sf2_points[i][j]
1581                                   = w83792d_read_value(client,
1582                                         W83792D_REG_POINTS[i][j]) & 0x7f;
1583                         }
1584                 }
1585
1586                 /* Update Smart Fan II duty cycle levels */
1587                 for (i = 0; i < 3; i++) {
1588                         reg_tmp = w83792d_read_value(client,
1589                                                 W83792D_REG_LEVELS[i][0]);
1590                         data->sf2_levels[i][0] = reg_tmp & 0x0f;
1591                         data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1592                         reg_tmp = w83792d_read_value(client,
1593                                                 W83792D_REG_LEVELS[i][2]);
1594                         data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1595                         data->sf2_levels[i][3] = reg_tmp & 0x0f;
1596                 }
1597
1598                 data->last_updated = jiffies;
1599                 data->valid = 1;
1600         }
1601
1602         mutex_unlock(&data->update_lock);
1603
1604 #ifdef DEBUG
1605         w83792d_print_debug(data, dev);
1606 #endif
1607
1608         return data;
1609 }
1610
1611 #ifdef DEBUG
1612 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1613 {
1614         int i = 0, j = 0;
1615         dev_dbg(dev, "==========The following is the debug message...========\n");
1616         dev_dbg(dev, "9 set of Voltages: =====>\n");
1617         for (i = 0; i < 9; i++) {
1618                 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1619                 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1620                 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1621         }
1622         dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1623         dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1624         dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1625         for (i = 0; i < 7; i++) {
1626                 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1627                 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1628                 dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1629         }
1630         dev_dbg(dev, "3 set of Temperatures: =====>\n");
1631         for (i = 0; i < 3; i++)
1632                 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1633
1634         for (i = 0; i < 2; i++) {
1635                 for (j = 0; j < 6; j++) {
1636                         dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1637                                                         data->temp_add[i][j]);
1638                 }
1639         }
1640
1641         for (i = 0; i < 7; i++)
1642                 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1643
1644         dev_dbg(dev, "==========End of the debug message...================\n");
1645         dev_dbg(dev, "\n");
1646 }
1647 #endif
1648
1649 module_i2c_driver(w83792d_driver);
1650
1651 MODULE_AUTHOR("Shane Huang (Winbond)");
1652 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1653 MODULE_LICENSE("GPL");