linux/drivers/hwmon/w83792d.c
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   1/*
   2 * w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
   3 *             monitoring
   4 * Copyright (C) 2004, 2005 Winbond Electronics Corp.
   5 *                          Chunhao Huang <DZShen@Winbond.com.tw>,
   6 *                          Rudolf Marek <r.marek@assembler.cz>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; either version 2 of the License, or
  11 * (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 *
  22 * Note:
  23 * 1. This driver is only for 2.6 kernel, 2.4 kernel need a different driver.
  24 * 2. This driver is only for Winbond W83792D C version device, there
  25 *     are also some motherboards with B version W83792D device. The
  26 *     calculation method to in6-in7(measured value, limits) is a little
  27 *     different between C and B version. C or B version can be identified
  28 *     by CR[0x49h].
  29 */
  30
  31/*
  32 * Supports following chips:
  33 *
  34 * Chip #vin    #fanin  #pwm    #temp   wchipid vendid  i2c     ISA
  35 * w83792d      9       7       7       3       0x7a    0x5ca3  yes     no
  36 */
  37
  38#include <linux/module.h>
  39#include <linux/init.h>
  40#include <linux/slab.h>
  41#include <linux/i2c.h>
  42#include <linux/hwmon.h>
  43#include <linux/hwmon-sysfs.h>
  44#include <linux/err.h>
  45#include <linux/mutex.h>
  46#include <linux/sysfs.h>
  47
  48/* Addresses to scan */
  49static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
  50                                                I2C_CLIENT_END };
  51
  52/* Insmod parameters */
  53
  54static unsigned short force_subclients[4];
  55module_param_array(force_subclients, short, NULL, 0);
  56MODULE_PARM_DESC(force_subclients, "List of subclient addresses: "
  57                        "{bus, clientaddr, subclientaddr1, subclientaddr2}");
  58
  59static bool init;
  60module_param(init, bool, 0);
  61MODULE_PARM_DESC(init, "Set to one to force chip initialization");
  62
  63/* The W83792D registers */
  64static const u8 W83792D_REG_IN[9] = {
  65        0x20,   /* Vcore A in DataSheet */
  66        0x21,   /* Vcore B in DataSheet */
  67        0x22,   /* VIN0 in DataSheet */
  68        0x23,   /* VIN1 in DataSheet */
  69        0x24,   /* VIN2 in DataSheet */
  70        0x25,   /* VIN3 in DataSheet */
  71        0x26,   /* 5VCC in DataSheet */
  72        0xB0,   /* 5VSB in DataSheet */
  73        0xB1    /* VBAT in DataSheet */
  74};
  75#define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
  76#define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
  77static const u8 W83792D_REG_IN_MAX[9] = {
  78        0x2B,   /* Vcore A High Limit in DataSheet */
  79        0x2D,   /* Vcore B High Limit in DataSheet */
  80        0x2F,   /* VIN0 High Limit in DataSheet */
  81        0x31,   /* VIN1 High Limit in DataSheet */
  82        0x33,   /* VIN2 High Limit in DataSheet */
  83        0x35,   /* VIN3 High Limit in DataSheet */
  84        0x37,   /* 5VCC High Limit in DataSheet */
  85        0xB4,   /* 5VSB High Limit in DataSheet */
  86        0xB6    /* VBAT High Limit in DataSheet */
  87};
  88static const u8 W83792D_REG_IN_MIN[9] = {
  89        0x2C,   /* Vcore A Low Limit in DataSheet */
  90        0x2E,   /* Vcore B Low Limit in DataSheet */
  91        0x30,   /* VIN0 Low Limit in DataSheet */
  92        0x32,   /* VIN1 Low Limit in DataSheet */
  93        0x34,   /* VIN2 Low Limit in DataSheet */
  94        0x36,   /* VIN3 Low Limit in DataSheet */
  95        0x38,   /* 5VCC Low Limit in DataSheet */
  96        0xB5,   /* 5VSB Low Limit in DataSheet */
  97        0xB7    /* VBAT Low Limit in DataSheet */
  98};
  99static const u8 W83792D_REG_FAN[7] = {
 100        0x28,   /* FAN 1 Count in DataSheet */
 101        0x29,   /* FAN 2 Count in DataSheet */
 102        0x2A,   /* FAN 3 Count in DataSheet */
 103        0xB8,   /* FAN 4 Count in DataSheet */
 104        0xB9,   /* FAN 5 Count in DataSheet */
 105        0xBA,   /* FAN 6 Count in DataSheet */
 106        0xBE    /* FAN 7 Count in DataSheet */
 107};
 108static const u8 W83792D_REG_FAN_MIN[7] = {
 109        0x3B,   /* FAN 1 Count Low Limit in DataSheet */
 110        0x3C,   /* FAN 2 Count Low Limit in DataSheet */
 111        0x3D,   /* FAN 3 Count Low Limit in DataSheet */
 112        0xBB,   /* FAN 4 Count Low Limit in DataSheet */
 113        0xBC,   /* FAN 5 Count Low Limit in DataSheet */
 114        0xBD,   /* FAN 6 Count Low Limit in DataSheet */
 115        0xBF    /* FAN 7 Count Low Limit in DataSheet */
 116};
 117#define W83792D_REG_FAN_CFG 0x84        /* FAN Configuration in DataSheet */
 118static const u8 W83792D_REG_FAN_DIV[4] = {
 119        0x47,   /* contains FAN2 and FAN1 Divisor */
 120        0x5B,   /* contains FAN4 and FAN3 Divisor */
 121        0x5C,   /* contains FAN6 and FAN5 Divisor */
 122        0x9E    /* contains FAN7 Divisor. */
 123};
 124static const u8 W83792D_REG_PWM[7] = {
 125        0x81,   /* FAN 1 Duty Cycle, be used to control */
 126        0x83,   /* FAN 2 Duty Cycle, be used to control */
 127        0x94,   /* FAN 3 Duty Cycle, be used to control */
 128        0xA3,   /* FAN 4 Duty Cycle, be used to control */
 129        0xA4,   /* FAN 5 Duty Cycle, be used to control */
 130        0xA5,   /* FAN 6 Duty Cycle, be used to control */
 131        0xA6    /* FAN 7 Duty Cycle, be used to control */
 132};
 133#define W83792D_REG_BANK                0x4E
 134#define W83792D_REG_TEMP2_CONFIG        0xC2
 135#define W83792D_REG_TEMP3_CONFIG        0xCA
 136
 137static const u8 W83792D_REG_TEMP1[3] = {
 138        0x27,   /* TEMP 1 in DataSheet */
 139        0x39,   /* TEMP 1 Over in DataSheet */
 140        0x3A,   /* TEMP 1 Hyst in DataSheet */
 141};
 142
 143static const u8 W83792D_REG_TEMP_ADD[2][6] = {
 144        { 0xC0,         /* TEMP 2 in DataSheet */
 145          0xC1,         /* TEMP 2(0.5 deg) in DataSheet */
 146          0xC5,         /* TEMP 2 Over High part in DataSheet */
 147          0xC6,         /* TEMP 2 Over Low part in DataSheet */
 148          0xC3,         /* TEMP 2 Thyst High part in DataSheet */
 149          0xC4 },       /* TEMP 2 Thyst Low part in DataSheet */
 150        { 0xC8,         /* TEMP 3 in DataSheet */
 151          0xC9,         /* TEMP 3(0.5 deg) in DataSheet */
 152          0xCD,         /* TEMP 3 Over High part in DataSheet */
 153          0xCE,         /* TEMP 3 Over Low part in DataSheet */
 154          0xCB,         /* TEMP 3 Thyst High part in DataSheet */
 155          0xCC }        /* TEMP 3 Thyst Low part in DataSheet */
 156};
 157
 158static const u8 W83792D_REG_THERMAL[3] = {
 159        0x85,   /* SmartFanI: Fan1 target value */
 160        0x86,   /* SmartFanI: Fan2 target value */
 161        0x96    /* SmartFanI: Fan3 target value */
 162};
 163
 164static const u8 W83792D_REG_TOLERANCE[3] = {
 165        0x87,   /* (bit3-0)SmartFan Fan1 tolerance */
 166        0x87,   /* (bit7-4)SmartFan Fan2 tolerance */
 167        0x97    /* (bit3-0)SmartFan Fan3 tolerance */
 168};
 169
 170static const u8 W83792D_REG_POINTS[3][4] = {
 171        { 0x85,         /* SmartFanII: Fan1 temp point 1 */
 172          0xE3,         /* SmartFanII: Fan1 temp point 2 */
 173          0xE4,         /* SmartFanII: Fan1 temp point 3 */
 174          0xE5 },       /* SmartFanII: Fan1 temp point 4 */
 175        { 0x86,         /* SmartFanII: Fan2 temp point 1 */
 176          0xE6,         /* SmartFanII: Fan2 temp point 2 */
 177          0xE7,         /* SmartFanII: Fan2 temp point 3 */
 178          0xE8 },       /* SmartFanII: Fan2 temp point 4 */
 179        { 0x96,         /* SmartFanII: Fan3 temp point 1 */
 180          0xE9,         /* SmartFanII: Fan3 temp point 2 */
 181          0xEA,         /* SmartFanII: Fan3 temp point 3 */
 182          0xEB }        /* SmartFanII: Fan3 temp point 4 */
 183};
 184
 185static const u8 W83792D_REG_LEVELS[3][4] = {
 186        { 0x88,         /* (bit3-0) SmartFanII: Fan1 Non-Stop */
 187          0x88,         /* (bit7-4) SmartFanII: Fan1 Level 1 */
 188          0xE0,         /* (bit7-4) SmartFanII: Fan1 Level 2 */
 189          0xE0 },       /* (bit3-0) SmartFanII: Fan1 Level 3 */
 190        { 0x89,         /* (bit3-0) SmartFanII: Fan2 Non-Stop */
 191          0x89,         /* (bit7-4) SmartFanII: Fan2 Level 1 */
 192          0xE1,         /* (bit7-4) SmartFanII: Fan2 Level 2 */
 193          0xE1 },       /* (bit3-0) SmartFanII: Fan2 Level 3 */
 194        { 0x98,         /* (bit3-0) SmartFanII: Fan3 Non-Stop */
 195          0x98,         /* (bit7-4) SmartFanII: Fan3 Level 1 */
 196          0xE2,         /* (bit7-4) SmartFanII: Fan3 Level 2 */
 197          0xE2 }        /* (bit3-0) SmartFanII: Fan3 Level 3 */
 198};
 199
 200#define W83792D_REG_GPIO_EN             0x1A
 201#define W83792D_REG_CONFIG              0x40
 202#define W83792D_REG_VID_FANDIV          0x47
 203#define W83792D_REG_CHIPID              0x49
 204#define W83792D_REG_WCHIPID             0x58
 205#define W83792D_REG_CHIPMAN             0x4F
 206#define W83792D_REG_PIN                 0x4B
 207#define W83792D_REG_I2C_SUBADDR         0x4A
 208
 209#define W83792D_REG_ALARM1 0xA9         /* realtime status register1 */
 210#define W83792D_REG_ALARM2 0xAA         /* realtime status register2 */
 211#define W83792D_REG_ALARM3 0xAB         /* realtime status register3 */
 212#define W83792D_REG_CHASSIS 0x42        /* Bit 5: Case Open status bit */
 213#define W83792D_REG_CHASSIS_CLR 0x44    /* Bit 7: Case Open CLR_CHS/Reset bit */
 214
 215/* control in0/in1 's limit modifiability */
 216#define W83792D_REG_VID_IN_B            0x17
 217
 218#define W83792D_REG_VBAT                0x5D
 219#define W83792D_REG_I2C_ADDR            0x48
 220
 221/*
 222 * Conversions. Rounding and limit checking is only done on the TO_REG
 223 * variants. Note that you should be a bit careful with which arguments
 224 * these macros are called: arguments may be evaluated more than once.
 225 * Fixing this is just not worth it.
 226 */
 227#define IN_FROM_REG(nr, val) (((nr) <= 1) ? ((val) * 2) : \
 228                ((((nr) == 6) || ((nr) == 7)) ? ((val) * 6) : ((val) * 4)))
 229#define IN_TO_REG(nr, val) (((nr) <= 1) ? ((val) / 2) : \
 230                ((((nr) == 6) || ((nr) == 7)) ? ((val) / 6) : ((val) / 4)))
 231
 232static inline u8
 233FAN_TO_REG(long rpm, int div)
 234{
 235        if (rpm == 0)
 236                return 255;
 237        rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 238        return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 239}
 240
 241#define FAN_FROM_REG(val, div)  ((val) == 0   ? -1 : \
 242                                ((val) == 255 ? 0 : \
 243                                                1350000 / ((val) * (div))))
 244
 245/* for temp1 */
 246#define TEMP1_TO_REG(val)       (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 247                                        : (val)) / 1000, 0, 0xff))
 248#define TEMP1_FROM_REG(val)     (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 249/* for temp2 and temp3, because they need additional resolution */
 250#define TEMP_ADD_FROM_REG(val1, val2) \
 251        ((((val1) & 0x80 ? (val1)-0x100 \
 252                : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
 253#define TEMP_ADD_TO_REG_HIGH(val) \
 254        (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 255                        : (val)) / 1000, 0, 0xff))
 256#define TEMP_ADD_TO_REG_LOW(val)        ((val%1000) ? 0x80 : 0x00)
 257
 258#define DIV_FROM_REG(val)               (1 << (val))
 259
 260static inline u8
 261DIV_TO_REG(long val)
 262{
 263        int i;
 264        val = SENSORS_LIMIT(val, 1, 128) >> 1;
 265        for (i = 0; i < 7; i++) {
 266                if (val == 0)
 267                        break;
 268                val >>= 1;
 269        }
 270        return (u8)i;
 271}
 272
 273struct w83792d_data {
 274        struct device *hwmon_dev;
 275
 276        struct mutex update_lock;
 277        char valid;             /* !=0 if following fields are valid */
 278        unsigned long last_updated;     /* In jiffies */
 279
 280        /* array of 2 pointers to subclients */
 281        struct i2c_client *lm75[2];
 282
 283        u8 in[9];               /* Register value */
 284        u8 in_max[9];           /* Register value */
 285        u8 in_min[9];           /* Register value */
 286        u16 low_bits;           /* Additional resolution to voltage in6-0 */
 287        u8 fan[7];              /* Register value */
 288        u8 fan_min[7];          /* Register value */
 289        u8 temp1[3];            /* current, over, thyst */
 290        u8 temp_add[2][6];      /* Register value */
 291        u8 fan_div[7];          /* Register encoding, shifted right */
 292        u8 pwm[7];              /*
 293                                 * We only consider the first 3 set of pwm,
 294                                 * although 792 chip has 7 set of pwm.
 295                                 */
 296        u8 pwmenable[3];
 297        u32 alarms;             /* realtime status register encoding,combined */
 298        u8 chassis;             /* Chassis status */
 299        u8 chassis_clear;       /* CLR_CHS, clear chassis intrusion detection */
 300        u8 thermal_cruise[3];   /* Smart FanI: Fan1,2,3 target value */
 301        u8 tolerance[3];        /* Fan1,2,3 tolerance(Smart Fan I/II) */
 302        u8 sf2_points[3][4];    /* Smart FanII: Fan1,2,3 temperature points */
 303        u8 sf2_levels[3][4];    /* Smart FanII: Fan1,2,3 duty cycle levels */
 304};
 305
 306static int w83792d_probe(struct i2c_client *client,
 307                         const struct i2c_device_id *id);
 308static int w83792d_detect(struct i2c_client *client,
 309                          struct i2c_board_info *info);
 310static int w83792d_remove(struct i2c_client *client);
 311static struct w83792d_data *w83792d_update_device(struct device *dev);
 312
 313#ifdef DEBUG
 314static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 315#endif
 316
 317static void w83792d_init_client(struct i2c_client *client);
 318
 319static const struct i2c_device_id w83792d_id[] = {
 320        { "w83792d", 0 },
 321        { }
 322};
 323MODULE_DEVICE_TABLE(i2c, w83792d_id);
 324
 325static struct i2c_driver w83792d_driver = {
 326        .class          = I2C_CLASS_HWMON,
 327        .driver = {
 328                .name = "w83792d",
 329        },
 330        .probe          = w83792d_probe,
 331        .remove         = w83792d_remove,
 332        .id_table       = w83792d_id,
 333        .detect         = w83792d_detect,
 334        .address_list   = normal_i2c,
 335};
 336
 337static inline long in_count_from_reg(int nr, struct w83792d_data *data)
 338{
 339        /* in7 and in8 do not have low bits, but the formula still works */
 340        return (data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03);
 341}
 342
 343/*
 344 * The SMBus locks itself. The Winbond W83792D chip has a bank register,
 345 * but the driver only accesses registers in bank 0, so we don't have
 346 * to switch banks and lock access between switches.
 347 */
 348static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
 349{
 350        return i2c_smbus_read_byte_data(client, reg);
 351}
 352
 353static inline int
 354w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
 355{
 356        return i2c_smbus_write_byte_data(client, reg, value);
 357}
 358
 359/* following are the sysfs callback functions */
 360static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 361                        char *buf)
 362{
 363        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 364        int nr = sensor_attr->index;
 365        struct w83792d_data *data = w83792d_update_device(dev);
 366        return sprintf(buf, "%ld\n",
 367                       IN_FROM_REG(nr, in_count_from_reg(nr, data)));
 368}
 369
 370#define show_in_reg(reg) \
 371static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 372                        char *buf) \
 373{ \
 374        struct sensor_device_attribute *sensor_attr \
 375                = to_sensor_dev_attr(attr); \
 376        int nr = sensor_attr->index; \
 377        struct w83792d_data *data = w83792d_update_device(dev); \
 378        return sprintf(buf, "%ld\n", \
 379                       (long)(IN_FROM_REG(nr, data->reg[nr]) * 4)); \
 380}
 381
 382show_in_reg(in_min);
 383show_in_reg(in_max);
 384
 385#define store_in_reg(REG, reg) \
 386static ssize_t store_in_##reg(struct device *dev, \
 387                                struct device_attribute *attr, \
 388                                const char *buf, size_t count) \
 389{ \
 390        struct sensor_device_attribute *sensor_attr \
 391                        = to_sensor_dev_attr(attr); \
 392        int nr = sensor_attr->index; \
 393        struct i2c_client *client = to_i2c_client(dev); \
 394        struct w83792d_data *data = i2c_get_clientdata(client); \
 395        unsigned long val; \
 396        int err = kstrtoul(buf, 10, &val); \
 397        if (err) \
 398                return err; \
 399        mutex_lock(&data->update_lock); \
 400        data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val) / 4, 0, 255); \
 401        w83792d_write_value(client, W83792D_REG_IN_##REG[nr], \
 402                            data->in_##reg[nr]); \
 403        mutex_unlock(&data->update_lock); \
 404         \
 405        return count; \
 406}
 407store_in_reg(MIN, min);
 408store_in_reg(MAX, max);
 409
 410#define show_fan_reg(reg) \
 411static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 412                        char *buf) \
 413{ \
 414        struct sensor_device_attribute *sensor_attr \
 415                        = to_sensor_dev_attr(attr); \
 416        int nr = sensor_attr->index - 1; \
 417        struct w83792d_data *data = w83792d_update_device(dev); \
 418        return sprintf(buf, "%d\n", \
 419                FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 420}
 421
 422show_fan_reg(fan);
 423show_fan_reg(fan_min);
 424
 425static ssize_t
 426store_fan_min(struct device *dev, struct device_attribute *attr,
 427                const char *buf, size_t count)
 428{
 429        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 430        int nr = sensor_attr->index - 1;
 431        struct i2c_client *client = to_i2c_client(dev);
 432        struct w83792d_data *data = i2c_get_clientdata(client);
 433        unsigned long val;
 434        int err;
 435
 436        err = kstrtoul(buf, 10, &val);
 437        if (err)
 438                return err;
 439
 440        mutex_lock(&data->update_lock);
 441        data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 442        w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
 443                                data->fan_min[nr]);
 444        mutex_unlock(&data->update_lock);
 445
 446        return count;
 447}
 448
 449static ssize_t
 450show_fan_div(struct device *dev, struct device_attribute *attr,
 451                char *buf)
 452{
 453        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 454        int nr = sensor_attr->index;
 455        struct w83792d_data *data = w83792d_update_device(dev);
 456        return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
 457}
 458
 459/*
 460 * Note: we save and restore the fan minimum here, because its value is
 461 * determined in part by the fan divisor.  This follows the principle of
 462 * least surprise; the user doesn't expect the fan minimum to change just
 463 * because the divisor changed.
 464 */
 465static ssize_t
 466store_fan_div(struct device *dev, struct device_attribute *attr,
 467                const char *buf, size_t count)
 468{
 469        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 470        int nr = sensor_attr->index - 1;
 471        struct i2c_client *client = to_i2c_client(dev);
 472        struct w83792d_data *data = i2c_get_clientdata(client);
 473        unsigned long min;
 474        /*u8 reg;*/
 475        u8 fan_div_reg = 0;
 476        u8 tmp_fan_div;
 477        unsigned long val;
 478        int err;
 479
 480        err = kstrtoul(buf, 10, &val);
 481        if (err)
 482                return err;
 483
 484        /* Save fan_min */
 485        mutex_lock(&data->update_lock);
 486        min = FAN_FROM_REG(data->fan_min[nr],
 487                           DIV_FROM_REG(data->fan_div[nr]));
 488
 489        data->fan_div[nr] = DIV_TO_REG(val);
 490
 491        fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
 492        fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
 493        tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
 494                                        : ((data->fan_div[nr]) & 0x07);
 495        w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
 496                                        fan_div_reg | tmp_fan_div);
 497
 498        /* Restore fan_min */
 499        data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 500        w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
 501        mutex_unlock(&data->update_lock);
 502
 503        return count;
 504}
 505
 506/* read/write the temperature1, includes measured value and limits */
 507
 508static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
 509                                char *buf)
 510{
 511        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 512        int nr = sensor_attr->index;
 513        struct w83792d_data *data = w83792d_update_device(dev);
 514        return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
 515}
 516
 517static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 518                                const char *buf, size_t count)
 519{
 520        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 521        int nr = sensor_attr->index;
 522        struct i2c_client *client = to_i2c_client(dev);
 523        struct w83792d_data *data = i2c_get_clientdata(client);
 524        long val;
 525        int err;
 526
 527        err = kstrtol(buf, 10, &val);
 528        if (err)
 529                return err;
 530
 531        mutex_lock(&data->update_lock);
 532        data->temp1[nr] = TEMP1_TO_REG(val);
 533        w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 534                data->temp1[nr]);
 535        mutex_unlock(&data->update_lock);
 536
 537        return count;
 538}
 539
 540/* read/write the temperature2-3, includes measured value and limits */
 541
 542static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
 543                                char *buf)
 544{
 545        struct sensor_device_attribute_2 *sensor_attr
 546          = to_sensor_dev_attr_2(attr);
 547        int nr = sensor_attr->nr;
 548        int index = sensor_attr->index;
 549        struct w83792d_data *data = w83792d_update_device(dev);
 550        return sprintf(buf, "%ld\n",
 551                (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
 552                        data->temp_add[nr][index+1]));
 553}
 554
 555static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 556                                const char *buf, size_t count)
 557{
 558        struct sensor_device_attribute_2 *sensor_attr
 559          = to_sensor_dev_attr_2(attr);
 560        int nr = sensor_attr->nr;
 561        int index = sensor_attr->index;
 562        struct i2c_client *client = to_i2c_client(dev);
 563        struct w83792d_data *data = i2c_get_clientdata(client);
 564        long val;
 565        int err;
 566
 567        err = kstrtol(buf, 10, &val);
 568        if (err)
 569                return err;
 570
 571        mutex_lock(&data->update_lock);
 572        data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 573        data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 574        w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 575                data->temp_add[nr][index]);
 576        w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 577                data->temp_add[nr][index+1]);
 578        mutex_unlock(&data->update_lock);
 579
 580        return count;
 581}
 582
 583/* get reatime status of all sensors items: voltage, temp, fan */
 584static ssize_t
 585show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
 586{
 587        struct w83792d_data *data = w83792d_update_device(dev);
 588        return sprintf(buf, "%d\n", data->alarms);
 589}
 590
 591static ssize_t show_alarm(struct device *dev,
 592                          struct device_attribute *attr, char *buf)
 593{
 594        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 595        int nr = sensor_attr->index;
 596        struct w83792d_data *data = w83792d_update_device(dev);
 597        return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
 598}
 599
 600static ssize_t
 601show_pwm(struct device *dev, struct device_attribute *attr,
 602                char *buf)
 603{
 604        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 605        int nr = sensor_attr->index;
 606        struct w83792d_data *data = w83792d_update_device(dev);
 607        return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 608}
 609
 610static ssize_t
 611show_pwmenable(struct device *dev, struct device_attribute *attr,
 612                        char *buf)
 613{
 614        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 615        int nr = sensor_attr->index - 1;
 616        struct w83792d_data *data = w83792d_update_device(dev);
 617        long pwm_enable_tmp = 1;
 618
 619        switch (data->pwmenable[nr]) {
 620        case 0:
 621                pwm_enable_tmp = 1; /* manual mode */
 622                break;
 623        case 1:
 624                pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
 625                break;
 626        case 2:
 627                pwm_enable_tmp = 2; /* Smart Fan II */
 628                break;
 629        }
 630
 631        return sprintf(buf, "%ld\n", pwm_enable_tmp);
 632}
 633
 634static ssize_t
 635store_pwm(struct device *dev, struct device_attribute *attr,
 636                const char *buf, size_t count)
 637{
 638        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 639        int nr = sensor_attr->index;
 640        struct i2c_client *client = to_i2c_client(dev);
 641        struct w83792d_data *data = i2c_get_clientdata(client);
 642        unsigned long val;
 643        int err;
 644
 645        err = kstrtoul(buf, 10, &val);
 646        if (err)
 647                return err;
 648        val = SENSORS_LIMIT(val, 0, 255) >> 4;
 649
 650        mutex_lock(&data->update_lock);
 651        val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
 652        data->pwm[nr] = val;
 653        w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 654        mutex_unlock(&data->update_lock);
 655
 656        return count;
 657}
 658
 659static ssize_t
 660store_pwmenable(struct device *dev, struct device_attribute *attr,
 661                        const char *buf, size_t count)
 662{
 663        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 664        int nr = sensor_attr->index - 1;
 665        struct i2c_client *client = to_i2c_client(dev);
 666        struct w83792d_data *data = i2c_get_clientdata(client);
 667        u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 668        unsigned long val;
 669        int err;
 670
 671        err = kstrtoul(buf, 10, &val);
 672        if (err)
 673                return err;
 674
 675        if (val < 1 || val > 3)
 676                return -EINVAL;
 677
 678        mutex_lock(&data->update_lock);
 679        switch (val) {
 680        case 1:
 681                data->pwmenable[nr] = 0; /* manual mode */
 682                break;
 683        case 2:
 684                data->pwmenable[nr] = 2; /* Smart Fan II */
 685                break;
 686        case 3:
 687                data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 688                break;
 689        }
 690        cfg1_tmp = data->pwmenable[0];
 691        cfg2_tmp = (data->pwmenable[1]) << 2;
 692        cfg3_tmp = (data->pwmenable[2]) << 4;
 693        cfg4_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG) & 0xc0;
 694        fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 695        w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
 696        mutex_unlock(&data->update_lock);
 697
 698        return count;
 699}
 700
 701static ssize_t
 702show_pwm_mode(struct device *dev, struct device_attribute *attr,
 703                        char *buf)
 704{
 705        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 706        int nr = sensor_attr->index;
 707        struct w83792d_data *data = w83792d_update_device(dev);
 708        return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 709}
 710
 711static ssize_t
 712store_pwm_mode(struct device *dev, struct device_attribute *attr,
 713                        const char *buf, size_t count)
 714{
 715        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 716        int nr = sensor_attr->index;
 717        struct i2c_client *client = to_i2c_client(dev);
 718        struct w83792d_data *data = i2c_get_clientdata(client);
 719        unsigned long val;
 720        int err;
 721
 722        err = kstrtoul(buf, 10, &val);
 723        if (err)
 724                return err;
 725        if (val > 1)
 726                return -EINVAL;
 727
 728        mutex_lock(&data->update_lock);
 729        data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
 730        if (val) {                      /* PWM mode */
 731                data->pwm[nr] |= 0x80;
 732        } else {                        /* DC mode */
 733                data->pwm[nr] &= 0x7f;
 734        }
 735        w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 736        mutex_unlock(&data->update_lock);
 737
 738        return count;
 739}
 740
 741static ssize_t
 742show_chassis(struct device *dev, struct device_attribute *attr,
 743                        char *buf)
 744{
 745        struct w83792d_data *data = w83792d_update_device(dev);
 746        return sprintf(buf, "%d\n", data->chassis);
 747}
 748
 749static ssize_t
 750show_regs_chassis(struct device *dev, struct device_attribute *attr,
 751                        char *buf)
 752{
 753        dev_warn(dev,
 754                 "Attribute %s is deprecated, use intrusion0_alarm instead\n",
 755                 "chassis");
 756        return show_chassis(dev, attr, buf);
 757}
 758
 759static ssize_t
 760show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
 761{
 762        struct w83792d_data *data = w83792d_update_device(dev);
 763        return sprintf(buf, "%d\n", data->chassis_clear);
 764}
 765
 766static ssize_t
 767store_chassis_clear_legacy(struct device *dev, struct device_attribute *attr,
 768                        const char *buf, size_t count)
 769{
 770        struct i2c_client *client = to_i2c_client(dev);
 771        struct w83792d_data *data = i2c_get_clientdata(client);
 772        unsigned long val;
 773        int err;
 774        u8 temp1 = 0, temp2 = 0;
 775
 776        dev_warn(dev,
 777                 "Attribute %s is deprecated, use intrusion0_alarm instead\n",
 778                 "chassis_clear");
 779
 780        err = kstrtoul(buf, 10, &val);
 781        if (err)
 782                return err;
 783
 784        mutex_lock(&data->update_lock);
 785        data->chassis_clear = SENSORS_LIMIT(val, 0, 1);
 786        temp1 = ((data->chassis_clear) << 7) & 0x80;
 787        temp2 = w83792d_read_value(client,
 788                W83792D_REG_CHASSIS_CLR) & 0x7f;
 789        w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
 790        mutex_unlock(&data->update_lock);
 791
 792        return count;
 793}
 794
 795static ssize_t
 796store_chassis_clear(struct device *dev, struct device_attribute *attr,
 797                        const char *buf, size_t count)
 798{
 799        struct i2c_client *client = to_i2c_client(dev);
 800        struct w83792d_data *data = i2c_get_clientdata(client);
 801        unsigned long val;
 802        u8 reg;
 803
 804        if (kstrtoul(buf, 10, &val) || val != 0)
 805                return -EINVAL;
 806
 807        mutex_lock(&data->update_lock);
 808        reg = w83792d_read_value(client, W83792D_REG_CHASSIS_CLR);
 809        w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, reg | 0x80);
 810        data->valid = 0;                /* Force cache refresh */
 811        mutex_unlock(&data->update_lock);
 812
 813        return count;
 814}
 815
 816/* For Smart Fan I / Thermal Cruise */
 817static ssize_t
 818show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 819                        char *buf)
 820{
 821        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 822        int nr = sensor_attr->index;
 823        struct w83792d_data *data = w83792d_update_device(dev);
 824        return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 825}
 826
 827static ssize_t
 828store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 829                        const char *buf, size_t count)
 830{
 831        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 832        int nr = sensor_attr->index - 1;
 833        struct i2c_client *client = to_i2c_client(dev);
 834        struct w83792d_data *data = i2c_get_clientdata(client);
 835        u8 target_tmp = 0, target_mask = 0;
 836        unsigned long val;
 837        int err;
 838
 839        err = kstrtoul(buf, 10, &val);
 840        if (err)
 841                return err;
 842
 843        target_tmp = val;
 844        target_tmp = target_tmp & 0x7f;
 845        mutex_lock(&data->update_lock);
 846        target_mask = w83792d_read_value(client,
 847                                         W83792D_REG_THERMAL[nr]) & 0x80;
 848        data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
 849        w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 850                (data->thermal_cruise[nr]) | target_mask);
 851        mutex_unlock(&data->update_lock);
 852
 853        return count;
 854}
 855
 856/* For Smart Fan I/Thermal Cruise and Smart Fan II */
 857static ssize_t
 858show_tolerance(struct device *dev, struct device_attribute *attr,
 859                char *buf)
 860{
 861        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 862        int nr = sensor_attr->index;
 863        struct w83792d_data *data = w83792d_update_device(dev);
 864        return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 865}
 866
 867static ssize_t
 868store_tolerance(struct device *dev, struct device_attribute *attr,
 869                const char *buf, size_t count)
 870{
 871        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 872        int nr = sensor_attr->index - 1;
 873        struct i2c_client *client = to_i2c_client(dev);
 874        struct w83792d_data *data = i2c_get_clientdata(client);
 875        u8 tol_tmp, tol_mask;
 876        unsigned long val;
 877        int err;
 878
 879        err = kstrtoul(buf, 10, &val);
 880        if (err)
 881                return err;
 882
 883        mutex_lock(&data->update_lock);
 884        tol_mask = w83792d_read_value(client,
 885                W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 886        tol_tmp = SENSORS_LIMIT(val, 0, 15);
 887        tol_tmp &= 0x0f;
 888        data->tolerance[nr] = tol_tmp;
 889        if (nr == 1)
 890                tol_tmp <<= 4;
 891        w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 892                tol_mask | tol_tmp);
 893        mutex_unlock(&data->update_lock);
 894
 895        return count;
 896}
 897
 898/* For Smart Fan II */
 899static ssize_t
 900show_sf2_point(struct device *dev, struct device_attribute *attr,
 901                char *buf)
 902{
 903        struct sensor_device_attribute_2 *sensor_attr
 904          = to_sensor_dev_attr_2(attr);
 905        int nr = sensor_attr->nr;
 906        int index = sensor_attr->index;
 907        struct w83792d_data *data = w83792d_update_device(dev);
 908        return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 909}
 910
 911static ssize_t
 912store_sf2_point(struct device *dev, struct device_attribute *attr,
 913                const char *buf, size_t count)
 914{
 915        struct sensor_device_attribute_2 *sensor_attr
 916          = to_sensor_dev_attr_2(attr);
 917        int nr = sensor_attr->nr - 1;
 918        int index = sensor_attr->index - 1;
 919        struct i2c_client *client = to_i2c_client(dev);
 920        struct w83792d_data *data = i2c_get_clientdata(client);
 921        u8 mask_tmp = 0;
 922        unsigned long val;
 923        int err;
 924
 925        err = kstrtoul(buf, 10, &val);
 926        if (err)
 927                return err;
 928
 929        mutex_lock(&data->update_lock);
 930        data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
 931        mask_tmp = w83792d_read_value(client,
 932                                        W83792D_REG_POINTS[index][nr]) & 0x80;
 933        w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 934                mask_tmp|data->sf2_points[index][nr]);
 935        mutex_unlock(&data->update_lock);
 936
 937        return count;
 938}
 939
 940static ssize_t
 941show_sf2_level(struct device *dev, struct device_attribute *attr,
 942                char *buf)
 943{
 944        struct sensor_device_attribute_2 *sensor_attr
 945          = to_sensor_dev_attr_2(attr);
 946        int nr = sensor_attr->nr;
 947        int index = sensor_attr->index;
 948        struct w83792d_data *data = w83792d_update_device(dev);
 949        return sprintf(buf, "%d\n",
 950                        (((data->sf2_levels[index-1][nr]) * 100) / 15));
 951}
 952
 953static ssize_t
 954store_sf2_level(struct device *dev, struct device_attribute *attr,
 955                const char *buf, size_t count)
 956{
 957        struct sensor_device_attribute_2 *sensor_attr
 958          = to_sensor_dev_attr_2(attr);
 959        int nr = sensor_attr->nr;
 960        int index = sensor_attr->index - 1;
 961        struct i2c_client *client = to_i2c_client(dev);
 962        struct w83792d_data *data = i2c_get_clientdata(client);
 963        u8 mask_tmp = 0, level_tmp = 0;
 964        unsigned long val;
 965        int err;
 966
 967        err = kstrtoul(buf, 10, &val);
 968        if (err)
 969                return err;
 970
 971        mutex_lock(&data->update_lock);
 972        data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
 973        mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 974                & ((nr == 3) ? 0xf0 : 0x0f);
 975        if (nr == 3)
 976                level_tmp = data->sf2_levels[index][nr];
 977        else
 978                level_tmp = data->sf2_levels[index][nr] << 4;
 979        w83792d_write_value(client, W83792D_REG_LEVELS[index][nr],
 980                            level_tmp | mask_tmp);
 981        mutex_unlock(&data->update_lock);
 982
 983        return count;
 984}
 985
 986
 987static int
 988w83792d_detect_subclients(struct i2c_client *new_client)
 989{
 990        int i, id, err;
 991        int address = new_client->addr;
 992        u8 val;
 993        struct i2c_adapter *adapter = new_client->adapter;
 994        struct w83792d_data *data = i2c_get_clientdata(new_client);
 995
 996        id = i2c_adapter_id(adapter);
 997        if (force_subclients[0] == id && force_subclients[1] == address) {
 998                for (i = 2; i <= 3; i++) {
 999                        if (force_subclients[i] < 0x48 ||
1000                            force_subclients[i] > 0x4f) {
1001                                dev_err(&new_client->dev, "invalid subclient "
1002                                        "address %d; must be 0x48-0x4f\n",
1003                                        force_subclients[i]);
1004                                err = -ENODEV;
1005                                goto ERROR_SC_0;
1006                        }
1007                }
1008                w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
1009                                        (force_subclients[2] & 0x07) |
1010                                        ((force_subclients[3] & 0x07) << 4));
1011        }
1012
1013        val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
1014        if (!(val & 0x08))
1015                data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
1016        if (!(val & 0x80)) {
1017                if ((data->lm75[0] != NULL) &&
1018                        ((val & 0x7) == ((val >> 4) & 0x7))) {
1019                        dev_err(&new_client->dev, "duplicate addresses 0x%x, "
1020                                "use force_subclient\n", data->lm75[0]->addr);
1021                        err = -ENODEV;
1022                        goto ERROR_SC_1;
1023                }
1024                data->lm75[1] = i2c_new_dummy(adapter,
1025                                              0x48 + ((val >> 4) & 0x7));
1026        }
1027
1028        return 0;
1029
1030/* Undo inits in case of errors */
1031
1032ERROR_SC_1:
1033        if (data->lm75[0] != NULL)
1034                i2c_unregister_device(data->lm75[0]);
1035ERROR_SC_0:
1036        return err;
1037}
1038
1039static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
1040static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
1041static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
1042static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
1043static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
1044static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
1045static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
1046static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
1047static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
1048static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
1049                        show_in_min, store_in_min, 0);
1050static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
1051                        show_in_min, store_in_min, 1);
1052static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
1053                        show_in_min, store_in_min, 2);
1054static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
1055                        show_in_min, store_in_min, 3);
1056static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
1057                        show_in_min, store_in_min, 4);
1058static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
1059                        show_in_min, store_in_min, 5);
1060static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
1061                        show_in_min, store_in_min, 6);
1062static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
1063                        show_in_min, store_in_min, 7);
1064static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
1065                        show_in_min, store_in_min, 8);
1066static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
1067                        show_in_max, store_in_max, 0);
1068static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
1069                        show_in_max, store_in_max, 1);
1070static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
1071                        show_in_max, store_in_max, 2);
1072static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
1073                        show_in_max, store_in_max, 3);
1074static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
1075                        show_in_max, store_in_max, 4);
1076static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
1077                        show_in_max, store_in_max, 5);
1078static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
1079                        show_in_max, store_in_max, 6);
1080static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
1081                        show_in_max, store_in_max, 7);
1082static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
1083                        show_in_max, store_in_max, 8);
1084static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
1085static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
1086static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
1087static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1088                        show_temp1, store_temp1, 0, 1);
1089static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
1090                        store_temp23, 0, 2);
1091static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
1092                        store_temp23, 1, 2);
1093static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1094                        show_temp1, store_temp1, 0, 2);
1095static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1096                        show_temp23, store_temp23, 0, 4);
1097static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1098                        show_temp23, store_temp23, 1, 4);
1099static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1100static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
1101static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
1102static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
1103static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
1104static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1105static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1106static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1107static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1108static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1109static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1110static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1111static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1112static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1113static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1114static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1115static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1116static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1117static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1118static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1119static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
1120static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
1121                        show_chassis_clear, store_chassis_clear_legacy);
1122static DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1123                        show_chassis, store_chassis_clear);
1124static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1125static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1126static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1127static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1128                        show_pwmenable, store_pwmenable, 1);
1129static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1130                        show_pwmenable, store_pwmenable, 2);
1131static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1132                        show_pwmenable, store_pwmenable, 3);
1133static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1134                        show_pwm_mode, store_pwm_mode, 0);
1135static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1136                        show_pwm_mode, store_pwm_mode, 1);
1137static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1138                        show_pwm_mode, store_pwm_mode, 2);
1139static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1140                        show_tolerance, store_tolerance, 1);
1141static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1142                        show_tolerance, store_tolerance, 2);
1143static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1144                        show_tolerance, store_tolerance, 3);
1145static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1146                        show_thermal_cruise, store_thermal_cruise, 1);
1147static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1148                        show_thermal_cruise, store_thermal_cruise, 2);
1149static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1150                        show_thermal_cruise, store_thermal_cruise, 3);
1151static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1152                        show_sf2_point, store_sf2_point, 1, 1);
1153static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1154                        show_sf2_point, store_sf2_point, 2, 1);
1155static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1156                        show_sf2_point, store_sf2_point, 3, 1);
1157static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1158                        show_sf2_point, store_sf2_point, 4, 1);
1159static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1160                        show_sf2_point, store_sf2_point, 1, 2);
1161static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1162                        show_sf2_point, store_sf2_point, 2, 2);
1163static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1164                        show_sf2_point, store_sf2_point, 3, 2);
1165static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1166                        show_sf2_point, store_sf2_point, 4, 2);
1167static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1168                        show_sf2_point, store_sf2_point, 1, 3);
1169static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1170                        show_sf2_point, store_sf2_point, 2, 3);
1171static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1172                        show_sf2_point, store_sf2_point, 3, 3);
1173static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1174                        show_sf2_point, store_sf2_point, 4, 3);
1175static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1176                        show_sf2_level, store_sf2_level, 1, 1);
1177static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1178                        show_sf2_level, store_sf2_level, 2, 1);
1179static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1180                        show_sf2_level, store_sf2_level, 3, 1);
1181static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1182                        show_sf2_level, store_sf2_level, 1, 2);
1183static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1184                        show_sf2_level, store_sf2_level, 2, 2);
1185static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1186                        show_sf2_level, store_sf2_level, 3, 2);
1187static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1188                        show_sf2_level, store_sf2_level, 1, 3);
1189static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1190                        show_sf2_level, store_sf2_level, 2, 3);
1191static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1192                        show_sf2_level, store_sf2_level, 3, 3);
1193static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1194static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1195static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1196static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1197static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1198static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1199static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1200static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1201                        show_fan_min, store_fan_min, 1);
1202static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1203                        show_fan_min, store_fan_min, 2);
1204static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1205                        show_fan_min, store_fan_min, 3);
1206static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1207                        show_fan_min, store_fan_min, 4);
1208static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1209                        show_fan_min, store_fan_min, 5);
1210static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1211                        show_fan_min, store_fan_min, 6);
1212static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1213                        show_fan_min, store_fan_min, 7);
1214static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1215                        show_fan_div, store_fan_div, 1);
1216static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1217                        show_fan_div, store_fan_div, 2);
1218static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1219                        show_fan_div, store_fan_div, 3);
1220static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1221                        show_fan_div, store_fan_div, 4);
1222static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1223                        show_fan_div, store_fan_div, 5);
1224static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1225                        show_fan_div, store_fan_div, 6);
1226static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1227                        show_fan_div, store_fan_div, 7);
1228
1229static struct attribute *w83792d_attributes_fan[4][5] = {
1230        {
1231                &sensor_dev_attr_fan4_input.dev_attr.attr,
1232                &sensor_dev_attr_fan4_min.dev_attr.attr,
1233                &sensor_dev_attr_fan4_div.dev_attr.attr,
1234                &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1235                NULL
1236        }, {
1237                &sensor_dev_attr_fan5_input.dev_attr.attr,
1238                &sensor_dev_attr_fan5_min.dev_attr.attr,
1239                &sensor_dev_attr_fan5_div.dev_attr.attr,
1240                &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1241                NULL
1242        }, {
1243                &sensor_dev_attr_fan6_input.dev_attr.attr,
1244                &sensor_dev_attr_fan6_min.dev_attr.attr,
1245                &sensor_dev_attr_fan6_div.dev_attr.attr,
1246                &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1247                NULL
1248        }, {
1249                &sensor_dev_attr_fan7_input.dev_attr.attr,
1250                &sensor_dev_attr_fan7_min.dev_attr.attr,
1251                &sensor_dev_attr_fan7_div.dev_attr.attr,
1252                &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1253                NULL
1254        }
1255};
1256
1257static const struct attribute_group w83792d_group_fan[4] = {
1258        { .attrs = w83792d_attributes_fan[0] },
1259        { .attrs = w83792d_attributes_fan[1] },
1260        { .attrs = w83792d_attributes_fan[2] },
1261        { .attrs = w83792d_attributes_fan[3] },
1262};
1263
1264static struct attribute *w83792d_attributes[] = {
1265        &sensor_dev_attr_in0_input.dev_attr.attr,
1266        &sensor_dev_attr_in0_max.dev_attr.attr,
1267        &sensor_dev_attr_in0_min.dev_attr.attr,
1268        &sensor_dev_attr_in1_input.dev_attr.attr,
1269        &sensor_dev_attr_in1_max.dev_attr.attr,
1270        &sensor_dev_attr_in1_min.dev_attr.attr,
1271        &sensor_dev_attr_in2_input.dev_attr.attr,
1272        &sensor_dev_attr_in2_max.dev_attr.attr,
1273        &sensor_dev_attr_in2_min.dev_attr.attr,
1274        &sensor_dev_attr_in3_input.dev_attr.attr,
1275        &sensor_dev_attr_in3_max.dev_attr.attr,
1276        &sensor_dev_attr_in3_min.dev_attr.attr,
1277        &sensor_dev_attr_in4_input.dev_attr.attr,
1278        &sensor_dev_attr_in4_max.dev_attr.attr,
1279        &sensor_dev_attr_in4_min.dev_attr.attr,
1280        &sensor_dev_attr_in5_input.dev_attr.attr,
1281        &sensor_dev_attr_in5_max.dev_attr.attr,
1282        &sensor_dev_attr_in5_min.dev_attr.attr,
1283        &sensor_dev_attr_in6_input.dev_attr.attr,
1284        &sensor_dev_attr_in6_max.dev_attr.attr,
1285        &sensor_dev_attr_in6_min.dev_attr.attr,
1286        &sensor_dev_attr_in7_input.dev_attr.attr,
1287        &sensor_dev_attr_in7_max.dev_attr.attr,
1288        &sensor_dev_attr_in7_min.dev_attr.attr,
1289        &sensor_dev_attr_in8_input.dev_attr.attr,
1290        &sensor_dev_attr_in8_max.dev_attr.attr,
1291        &sensor_dev_attr_in8_min.dev_attr.attr,
1292        &sensor_dev_attr_in0_alarm.dev_attr.attr,
1293        &sensor_dev_attr_in1_alarm.dev_attr.attr,
1294        &sensor_dev_attr_in2_alarm.dev_attr.attr,
1295        &sensor_dev_attr_in3_alarm.dev_attr.attr,
1296        &sensor_dev_attr_in4_alarm.dev_attr.attr,
1297        &sensor_dev_attr_in5_alarm.dev_attr.attr,
1298        &sensor_dev_attr_in6_alarm.dev_attr.attr,
1299        &sensor_dev_attr_in7_alarm.dev_attr.attr,
1300        &sensor_dev_attr_in8_alarm.dev_attr.attr,
1301        &sensor_dev_attr_temp1_input.dev_attr.attr,
1302        &sensor_dev_attr_temp1_max.dev_attr.attr,
1303        &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1304        &sensor_dev_attr_temp2_input.dev_attr.attr,
1305        &sensor_dev_attr_temp2_max.dev_attr.attr,
1306        &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1307        &sensor_dev_attr_temp3_input.dev_attr.attr,
1308        &sensor_dev_attr_temp3_max.dev_attr.attr,
1309        &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1310        &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1311        &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1312        &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1313        &sensor_dev_attr_pwm1.dev_attr.attr,
1314        &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1315        &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1316        &sensor_dev_attr_pwm2.dev_attr.attr,
1317        &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1318        &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1319        &sensor_dev_attr_pwm3.dev_attr.attr,
1320        &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1321        &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1322        &dev_attr_alarms.attr,
1323        &dev_attr_chassis.attr,
1324        &dev_attr_chassis_clear.attr,
1325        &dev_attr_intrusion0_alarm.attr,
1326        &sensor_dev_attr_tolerance1.dev_attr.attr,
1327        &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1328        &sensor_dev_attr_tolerance2.dev_attr.attr,
1329        &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1330        &sensor_dev_attr_tolerance3.dev_attr.attr,
1331        &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1332        &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1333        &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1334        &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1335        &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1336        &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1337        &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1338        &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1339        &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1340        &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1341        &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1342        &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1343        &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1344        &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1345        &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1346        &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1347        &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1348        &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1349        &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1350        &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1351        &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1352        &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1353        &sensor_dev_attr_fan1_input.dev_attr.attr,
1354        &sensor_dev_attr_fan1_min.dev_attr.attr,
1355        &sensor_dev_attr_fan1_div.dev_attr.attr,
1356        &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1357        &sensor_dev_attr_fan2_input.dev_attr.attr,
1358        &sensor_dev_attr_fan2_min.dev_attr.attr,
1359        &sensor_dev_attr_fan2_div.dev_attr.attr,
1360        &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1361        &sensor_dev_attr_fan3_input.dev_attr.attr,
1362        &sensor_dev_attr_fan3_min.dev_attr.attr,
1363        &sensor_dev_attr_fan3_div.dev_attr.attr,
1364        &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1365        NULL
1366};
1367
1368static const struct attribute_group w83792d_group = {
1369        .attrs = w83792d_attributes,
1370};
1371
1372/* Return 0 if detection is successful, -ENODEV otherwise */
1373static int
1374w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)
1375{
1376        struct i2c_adapter *adapter = client->adapter;
1377        int val1, val2;
1378        unsigned short address = client->addr;
1379
1380        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1381                return -ENODEV;
1382
1383        if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
1384                return -ENODEV;
1385
1386        val1 = w83792d_read_value(client, W83792D_REG_BANK);
1387        val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1388        /* Check for Winbond ID if in bank 0 */
1389        if (!(val1 & 0x07)) {  /* is Bank0 */
1390                if ((!(val1 & 0x80) && val2 != 0xa3) ||
1391                    ((val1 & 0x80) && val2 != 0x5c))
1392                        return -ENODEV;
1393        }
1394        /*
1395         * If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1396         * should match
1397         */
1398        if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
1399                return -ENODEV;
1400
1401        /*  Put it now into bank 0 and Vendor ID High Byte */
1402        w83792d_write_value(client,
1403                            W83792D_REG_BANK,
1404                            (w83792d_read_value(client,
1405                                W83792D_REG_BANK) & 0x78) | 0x80);
1406
1407        /* Determine the chip type. */
1408        val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1409        val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1410        if (val1 != 0x7a || val2 != 0x5c)
1411                return -ENODEV;
1412
1413        strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
1414
1415        return 0;
1416}
1417
1418static int
1419w83792d_probe(struct i2c_client *client, const struct i2c_device_id *id)
1420{
1421        struct w83792d_data *data;
1422        struct device *dev = &client->dev;
1423        int i, val1, err;
1424
1425        data = devm_kzalloc(dev, sizeof(struct w83792d_data), GFP_KERNEL);
1426        if (!data)
1427                return -ENOMEM;
1428
1429        i2c_set_clientdata(client, data);
1430        data->valid = 0;
1431        mutex_init(&data->update_lock);
1432
1433        err = w83792d_detect_subclients(client);
1434        if (err)
1435                return err;
1436
1437        /* Initialize the chip */
1438        w83792d_init_client(client);
1439
1440        /* A few vars need to be filled upon startup */
1441        for (i = 0; i < 7; i++) {
1442                data->fan_min[i] = w83792d_read_value(client,
1443                                        W83792D_REG_FAN_MIN[i]);
1444        }
1445
1446        /* Register sysfs hooks */
1447        err = sysfs_create_group(&dev->kobj, &w83792d_group);
1448        if (err)
1449                goto exit_i2c_unregister;
1450
1451        /*
1452         * Read GPIO enable register to check if pins for fan 4,5 are used as
1453         * GPIO
1454         */
1455        val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1456
1457        if (!(val1 & 0x40)) {
1458                err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[0]);
1459                if (err)
1460                        goto exit_remove_files;
1461        }
1462
1463        if (!(val1 & 0x20)) {
1464                err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[1]);
1465                if (err)
1466                        goto exit_remove_files;
1467        }
1468
1469        val1 = w83792d_read_value(client, W83792D_REG_PIN);
1470        if (val1 & 0x40) {
1471                err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[2]);
1472                if (err)
1473                        goto exit_remove_files;
1474        }
1475
1476        if (val1 & 0x04) {
1477                err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[3]);
1478                if (err)
1479                        goto exit_remove_files;
1480        }
1481
1482        data->hwmon_dev = hwmon_device_register(dev);
1483        if (IS_ERR(data->hwmon_dev)) {
1484                err = PTR_ERR(data->hwmon_dev);
1485                goto exit_remove_files;
1486        }
1487
1488        return 0;
1489
1490exit_remove_files:
1491        sysfs_remove_group(&dev->kobj, &w83792d_group);
1492        for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1493                sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1494exit_i2c_unregister:
1495        if (data->lm75[0] != NULL)
1496                i2c_unregister_device(data->lm75[0]);
1497        if (data->lm75[1] != NULL)
1498                i2c_unregister_device(data->lm75[1]);
1499        return err;
1500}
1501
1502static int
1503w83792d_remove(struct i2c_client *client)
1504{
1505        struct w83792d_data *data = i2c_get_clientdata(client);
1506        int i;
1507
1508        hwmon_device_unregister(data->hwmon_dev);
1509        sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1510        for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1511                sysfs_remove_group(&client->dev.kobj,
1512                                   &w83792d_group_fan[i]);
1513
1514        if (data->lm75[0] != NULL)
1515                i2c_unregister_device(data->lm75[0]);
1516        if (data->lm75[1] != NULL)
1517                i2c_unregister_device(data->lm75[1]);
1518
1519        return 0;
1520}
1521
1522static void
1523w83792d_init_client(struct i2c_client *client)
1524{
1525        u8 temp2_cfg, temp3_cfg, vid_in_b;
1526
1527        if (init)
1528                w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1529
1530        /*
1531         * Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1532         * W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1533         * vin0/vin1 can be modified by user;
1534         * W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1535         * vin0/vin1 auto-updated, can NOT be modified by user.
1536         */
1537        vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1538        w83792d_write_value(client, W83792D_REG_VID_IN_B,
1539                            vid_in_b & 0xbf);
1540
1541        temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1542        temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1543        w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1544                                temp2_cfg & 0xe6);
1545        w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1546                                temp3_cfg & 0xe6);
1547
1548        /* Start monitoring */
1549        w83792d_write_value(client, W83792D_REG_CONFIG,
1550                            (w83792d_read_value(client,
1551                                                W83792D_REG_CONFIG) & 0xf7)
1552                            | 0x01);
1553}
1554
1555static struct w83792d_data *w83792d_update_device(struct device *dev)
1556{
1557        struct i2c_client *client = to_i2c_client(dev);
1558        struct w83792d_data *data = i2c_get_clientdata(client);
1559        int i, j;
1560        u8 reg_array_tmp[4], reg_tmp;
1561
1562        mutex_lock(&data->update_lock);
1563
1564        if (time_after
1565            (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1566            || time_before(jiffies, data->last_updated) || !data->valid) {
1567                dev_dbg(dev, "Starting device update\n");
1568
1569                /* Update the voltages measured value and limits */
1570                for (i = 0; i < 9; i++) {
1571                        data->in[i] = w83792d_read_value(client,
1572                                                W83792D_REG_IN[i]);
1573                        data->in_max[i] = w83792d_read_value(client,
1574                                                W83792D_REG_IN_MAX[i]);
1575                        data->in_min[i] = w83792d_read_value(client,
1576                                                W83792D_REG_IN_MIN[i]);
1577                }
1578                data->low_bits = w83792d_read_value(client,
1579                                                W83792D_REG_LOW_BITS1) +
1580                                 (w83792d_read_value(client,
1581                                                W83792D_REG_LOW_BITS2) << 8);
1582                for (i = 0; i < 7; i++) {
1583                        /* Update the Fan measured value and limits */
1584                        data->fan[i] = w83792d_read_value(client,
1585                                                W83792D_REG_FAN[i]);
1586                        data->fan_min[i] = w83792d_read_value(client,
1587                                                W83792D_REG_FAN_MIN[i]);
1588                        /* Update the PWM/DC Value and PWM/DC flag */
1589                        data->pwm[i] = w83792d_read_value(client,
1590                                                W83792D_REG_PWM[i]);
1591                }
1592
1593                reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1594                data->pwmenable[0] = reg_tmp & 0x03;
1595                data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1596                data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1597
1598                for (i = 0; i < 3; i++) {
1599                        data->temp1[i] = w83792d_read_value(client,
1600                                                        W83792D_REG_TEMP1[i]);
1601                }
1602                for (i = 0; i < 2; i++) {
1603                        for (j = 0; j < 6; j++) {
1604                                data->temp_add[i][j] = w83792d_read_value(
1605                                        client, W83792D_REG_TEMP_ADD[i][j]);
1606                        }
1607                }
1608
1609                /* Update the Fan Divisor */
1610                for (i = 0; i < 4; i++) {
1611                        reg_array_tmp[i] = w83792d_read_value(client,
1612                                                        W83792D_REG_FAN_DIV[i]);
1613                }
1614                data->fan_div[0] = reg_array_tmp[0] & 0x07;
1615                data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1616                data->fan_div[2] = reg_array_tmp[1] & 0x07;
1617                data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1618                data->fan_div[4] = reg_array_tmp[2] & 0x07;
1619                data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1620                data->fan_div[6] = reg_array_tmp[3] & 0x07;
1621
1622                /* Update the realtime status */
1623                data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1624                        (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1625                        (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1626
1627                /* Update CaseOpen status and it's CLR_CHS. */
1628                data->chassis = (w83792d_read_value(client,
1629                        W83792D_REG_CHASSIS) >> 5) & 0x01;
1630                data->chassis_clear = (w83792d_read_value(client,
1631                        W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
1632
1633                /* Update Thermal Cruise/Smart Fan I target value */
1634                for (i = 0; i < 3; i++) {
1635                        data->thermal_cruise[i] =
1636                                w83792d_read_value(client,
1637                                W83792D_REG_THERMAL[i]) & 0x7f;
1638                }
1639
1640                /* Update Smart Fan I/II tolerance */
1641                reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1642                data->tolerance[0] = reg_tmp & 0x0f;
1643                data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1644                data->tolerance[2] = w83792d_read_value(client,
1645                                        W83792D_REG_TOLERANCE[2]) & 0x0f;
1646
1647                /* Update Smart Fan II temperature points */
1648                for (i = 0; i < 3; i++) {
1649                        for (j = 0; j < 4; j++) {
1650                                data->sf2_points[i][j]
1651                                  = w83792d_read_value(client,
1652                                        W83792D_REG_POINTS[i][j]) & 0x7f;
1653                        }
1654                }
1655
1656                /* Update Smart Fan II duty cycle levels */
1657                for (i = 0; i < 3; i++) {
1658                        reg_tmp = w83792d_read_value(client,
1659                                                W83792D_REG_LEVELS[i][0]);
1660                        data->sf2_levels[i][0] = reg_tmp & 0x0f;
1661                        data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1662                        reg_tmp = w83792d_read_value(client,
1663                                                W83792D_REG_LEVELS[i][2]);
1664                        data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1665                        data->sf2_levels[i][3] = reg_tmp & 0x0f;
1666                }
1667
1668                data->last_updated = jiffies;
1669                data->valid = 1;
1670        }
1671
1672        mutex_unlock(&data->update_lock);
1673
1674#ifdef DEBUG
1675        w83792d_print_debug(data, dev);
1676#endif
1677
1678        return data;
1679}
1680
1681#ifdef DEBUG
1682static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1683{
1684        int i = 0, j = 0;
1685        dev_dbg(dev, "==========The following is the debug message...========\n");
1686        dev_dbg(dev, "9 set of Voltages: =====>\n");
1687        for (i = 0; i < 9; i++) {
1688                dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1689                dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1690                dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1691        }
1692        dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1693        dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1694        dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1695        for (i = 0; i < 7; i++) {
1696                dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1697                dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1698                dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1699        }
1700        dev_dbg(dev, "3 set of Temperatures: =====>\n");
1701        for (i = 0; i < 3; i++)
1702                dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1703
1704        for (i = 0; i < 2; i++) {
1705                for (j = 0; j < 6; j++) {
1706                        dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1707                                                        data->temp_add[i][j]);
1708                }
1709        }
1710
1711        for (i = 0; i < 7; i++)
1712                dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1713
1714        dev_dbg(dev, "==========End of the debug message...================\n");
1715        dev_dbg(dev, "\n");
1716}
1717#endif
1718
1719module_i2c_driver(w83792d_driver);
1720
1721MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
1722MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1723MODULE_LICENSE("GPL");
1724
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