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#include <linux/jiffies.h>
  48
  49/* Addresses to scan */
  50static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
  51                                                I2C_CLIENT_END };
  52
  53/* Insmod parameters */
  54
  55static unsigned short force_subclients[4];
  56module_param_array(force_subclients, short, NULL, 0);
  57MODULE_PARM_DESC(force_subclients, "List of subclient addresses: "
  58                        "{bus, clientaddr, subclientaddr1, subclientaddr2}");
  59
  60static bool init;
  61module_param(init, bool, 0);
  62MODULE_PARM_DESC(init, "Set to one to force chip initialization");
  63
  64/* The W83792D registers */
  65static const u8 W83792D_REG_IN[9] = {
  66        0x20,   /* Vcore A in DataSheet */
  67        0x21,   /* Vcore B in DataSheet */
  68        0x22,   /* VIN0 in DataSheet */
  69        0x23,   /* VIN1 in DataSheet */
  70        0x24,   /* VIN2 in DataSheet */
  71        0x25,   /* VIN3 in DataSheet */
  72        0x26,   /* 5VCC in DataSheet */
  73        0xB0,   /* 5VSB in DataSheet */
  74        0xB1    /* VBAT in DataSheet */
  75};
  76#define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
  77#define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
  78static const u8 W83792D_REG_IN_MAX[9] = {
  79        0x2B,   /* Vcore A High Limit in DataSheet */
  80        0x2D,   /* Vcore B High Limit in DataSheet */
  81        0x2F,   /* VIN0 High Limit in DataSheet */
  82        0x31,   /* VIN1 High Limit in DataSheet */
  83        0x33,   /* VIN2 High Limit in DataSheet */
  84        0x35,   /* VIN3 High Limit in DataSheet */
  85        0x37,   /* 5VCC High Limit in DataSheet */
  86        0xB4,   /* 5VSB High Limit in DataSheet */
  87        0xB6    /* VBAT High Limit in DataSheet */
  88};
  89static const u8 W83792D_REG_IN_MIN[9] = {
  90        0x2C,   /* Vcore A Low Limit in DataSheet */
  91        0x2E,   /* Vcore B Low Limit in DataSheet */
  92        0x30,   /* VIN0 Low Limit in DataSheet */
  93        0x32,   /* VIN1 Low Limit in DataSheet */
  94        0x34,   /* VIN2 Low Limit in DataSheet */
  95        0x36,   /* VIN3 Low Limit in DataSheet */
  96        0x38,   /* 5VCC Low Limit in DataSheet */
  97        0xB5,   /* 5VSB Low Limit in DataSheet */
  98        0xB7    /* VBAT Low Limit in DataSheet */
  99};
 100static const u8 W83792D_REG_FAN[7] = {
 101        0x28,   /* FAN 1 Count in DataSheet */
 102        0x29,   /* FAN 2 Count in DataSheet */
 103        0x2A,   /* FAN 3 Count in DataSheet */
 104        0xB8,   /* FAN 4 Count in DataSheet */
 105        0xB9,   /* FAN 5 Count in DataSheet */
 106        0xBA,   /* FAN 6 Count in DataSheet */
 107        0xBE    /* FAN 7 Count in DataSheet */
 108};
 109static const u8 W83792D_REG_FAN_MIN[7] = {
 110        0x3B,   /* FAN 1 Count Low Limit in DataSheet */
 111        0x3C,   /* FAN 2 Count Low Limit in DataSheet */
 112        0x3D,   /* FAN 3 Count Low Limit in DataSheet */
 113        0xBB,   /* FAN 4 Count Low Limit in DataSheet */
 114        0xBC,   /* FAN 5 Count Low Limit in DataSheet */
 115        0xBD,   /* FAN 6 Count Low Limit in DataSheet */
 116        0xBF    /* FAN 7 Count Low Limit in DataSheet */
 117};
 118#define W83792D_REG_FAN_CFG 0x84        /* FAN Configuration in DataSheet */
 119static const u8 W83792D_REG_FAN_DIV[4] = {
 120        0x47,   /* contains FAN2 and FAN1 Divisor */
 121        0x5B,   /* contains FAN4 and FAN3 Divisor */
 122        0x5C,   /* contains FAN6 and FAN5 Divisor */
 123        0x9E    /* contains FAN7 Divisor. */
 124};
 125static const u8 W83792D_REG_PWM[7] = {
 126        0x81,   /* FAN 1 Duty Cycle, be used to control */
 127        0x83,   /* FAN 2 Duty Cycle, be used to control */
 128        0x94,   /* FAN 3 Duty Cycle, be used to control */
 129        0xA3,   /* FAN 4 Duty Cycle, be used to control */
 130        0xA4,   /* FAN 5 Duty Cycle, be used to control */
 131        0xA5,   /* FAN 6 Duty Cycle, be used to control */
 132        0xA6    /* FAN 7 Duty Cycle, be used to control */
 133};
 134#define W83792D_REG_BANK                0x4E
 135#define W83792D_REG_TEMP2_CONFIG        0xC2
 136#define W83792D_REG_TEMP3_CONFIG        0xCA
 137
 138static const u8 W83792D_REG_TEMP1[3] = {
 139        0x27,   /* TEMP 1 in DataSheet */
 140        0x39,   /* TEMP 1 Over in DataSheet */
 141        0x3A,   /* TEMP 1 Hyst in DataSheet */
 142};
 143
 144static const u8 W83792D_REG_TEMP_ADD[2][6] = {
 145        { 0xC0,         /* TEMP 2 in DataSheet */
 146          0xC1,         /* TEMP 2(0.5 deg) in DataSheet */
 147          0xC5,         /* TEMP 2 Over High part in DataSheet */
 148          0xC6,         /* TEMP 2 Over Low part in DataSheet */
 149          0xC3,         /* TEMP 2 Thyst High part in DataSheet */
 150          0xC4 },       /* TEMP 2 Thyst Low part in DataSheet */
 151        { 0xC8,         /* TEMP 3 in DataSheet */
 152          0xC9,         /* TEMP 3(0.5 deg) in DataSheet */
 153          0xCD,         /* TEMP 3 Over High part in DataSheet */
 154          0xCE,         /* TEMP 3 Over Low part in DataSheet */
 155          0xCB,         /* TEMP 3 Thyst High part in DataSheet */
 156          0xCC }        /* TEMP 3 Thyst Low part in DataSheet */
 157};
 158
 159static const u8 W83792D_REG_THERMAL[3] = {
 160        0x85,   /* SmartFanI: Fan1 target value */
 161        0x86,   /* SmartFanI: Fan2 target value */
 162        0x96    /* SmartFanI: Fan3 target value */
 163};
 164
 165static const u8 W83792D_REG_TOLERANCE[3] = {
 166        0x87,   /* (bit3-0)SmartFan Fan1 tolerance */
 167        0x87,   /* (bit7-4)SmartFan Fan2 tolerance */
 168        0x97    /* (bit3-0)SmartFan Fan3 tolerance */
 169};
 170
 171static const u8 W83792D_REG_POINTS[3][4] = {
 172        { 0x85,         /* SmartFanII: Fan1 temp point 1 */
 173          0xE3,         /* SmartFanII: Fan1 temp point 2 */
 174          0xE4,         /* SmartFanII: Fan1 temp point 3 */
 175          0xE5 },       /* SmartFanII: Fan1 temp point 4 */
 176        { 0x86,         /* SmartFanII: Fan2 temp point 1 */
 177          0xE6,         /* SmartFanII: Fan2 temp point 2 */
 178          0xE7,         /* SmartFanII: Fan2 temp point 3 */
 179          0xE8 },       /* SmartFanII: Fan2 temp point 4 */
 180        { 0x96,         /* SmartFanII: Fan3 temp point 1 */
 181          0xE9,         /* SmartFanII: Fan3 temp point 2 */
 182          0xEA,         /* SmartFanII: Fan3 temp point 3 */
 183          0xEB }        /* SmartFanII: Fan3 temp point 4 */
 184};
 185
 186static const u8 W83792D_REG_LEVELS[3][4] = {
 187        { 0x88,         /* (bit3-0) SmartFanII: Fan1 Non-Stop */
 188          0x88,         /* (bit7-4) SmartFanII: Fan1 Level 1 */
 189          0xE0,         /* (bit7-4) SmartFanII: Fan1 Level 2 */
 190          0xE0 },       /* (bit3-0) SmartFanII: Fan1 Level 3 */
 191        { 0x89,         /* (bit3-0) SmartFanII: Fan2 Non-Stop */
 192          0x89,         /* (bit7-4) SmartFanII: Fan2 Level 1 */
 193          0xE1,         /* (bit7-4) SmartFanII: Fan2 Level 2 */
 194          0xE1 },       /* (bit3-0) SmartFanII: Fan2 Level 3 */
 195        { 0x98,         /* (bit3-0) SmartFanII: Fan3 Non-Stop */
 196          0x98,         /* (bit7-4) SmartFanII: Fan3 Level 1 */
 197          0xE2,         /* (bit7-4) SmartFanII: Fan3 Level 2 */
 198          0xE2 }        /* (bit3-0) SmartFanII: Fan3 Level 3 */
 199};
 200
 201#define W83792D_REG_GPIO_EN             0x1A
 202#define W83792D_REG_CONFIG              0x40
 203#define W83792D_REG_VID_FANDIV          0x47
 204#define W83792D_REG_CHIPID              0x49
 205#define W83792D_REG_WCHIPID             0x58
 206#define W83792D_REG_CHIPMAN             0x4F
 207#define W83792D_REG_PIN                 0x4B
 208#define W83792D_REG_I2C_SUBADDR         0x4A
 209
 210#define W83792D_REG_ALARM1 0xA9         /* realtime status register1 */
 211#define W83792D_REG_ALARM2 0xAA         /* realtime status register2 */
 212#define W83792D_REG_ALARM3 0xAB         /* realtime status register3 */
 213#define W83792D_REG_CHASSIS 0x42        /* Bit 5: Case Open status bit */
 214#define W83792D_REG_CHASSIS_CLR 0x44    /* Bit 7: Case Open CLR_CHS/Reset bit */
 215
 216/* control in0/in1 's limit modifiability */
 217#define W83792D_REG_VID_IN_B            0x17
 218
 219#define W83792D_REG_VBAT                0x5D
 220#define W83792D_REG_I2C_ADDR            0x48
 221
 222/*
 223 * Conversions. Rounding and limit checking is only done on the TO_REG
 224 * variants. Note that you should be a bit careful with which arguments
 225 * these macros are called: arguments may be evaluated more than once.
 226 * Fixing this is just not worth it.
 227 */
 228#define IN_FROM_REG(nr, val) (((nr) <= 1) ? ((val) * 2) : \
 229                ((((nr) == 6) || ((nr) == 7)) ? ((val) * 6) : ((val) * 4)))
 230#define IN_TO_REG(nr, val) (((nr) <= 1) ? ((val) / 2) : \
 231                ((((nr) == 6) || ((nr) == 7)) ? ((val) / 6) : ((val) / 4)))
 232
 233static inline u8
 234FAN_TO_REG(long rpm, int div)
 235{
 236        if (rpm == 0)
 237                return 255;
 238        rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 239        return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 240}
 241
 242#define FAN_FROM_REG(val, div)  ((val) == 0   ? -1 : \
 243                                ((val) == 255 ? 0 : \
 244                                                1350000 / ((val) * (div))))
 245
 246/* for temp1 */
 247#define TEMP1_TO_REG(val)       (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 248                                        : (val)) / 1000, 0, 0xff))
 249#define TEMP1_FROM_REG(val)     (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 250/* for temp2 and temp3, because they need additional resolution */
 251#define TEMP_ADD_FROM_REG(val1, val2) \
 252        ((((val1) & 0x80 ? (val1)-0x100 \
 253                : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
 254#define TEMP_ADD_TO_REG_HIGH(val) \
 255        (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 256                        : (val)) / 1000, 0, 0xff))
 257#define TEMP_ADD_TO_REG_LOW(val)        ((val%1000) ? 0x80 : 0x00)
 258
 259#define DIV_FROM_REG(val)               (1 << (val))
 260
 261static inline u8
 262DIV_TO_REG(long val)
 263{
 264        int i;
 265        val = SENSORS_LIMIT(val, 1, 128) >> 1;
 266        for (i = 0; i < 7; i++) {
 267                if (val == 0)
 268                        break;
 269                val >>= 1;
 270        }
 271        return (u8)i;
 272}
 273
 274struct w83792d_data {
 275        struct device *hwmon_dev;
 276
 277        struct mutex update_lock;
 278        char valid;             /* !=0 if following fields are valid */
 279        unsigned long last_updated;     /* In jiffies */
 280
 281        /* array of 2 pointers to subclients */
 282        struct i2c_client *lm75[2];
 283
 284        u8 in[9];               /* Register value */
 285        u8 in_max[9];           /* Register value */
 286        u8 in_min[9];           /* Register value */
 287        u16 low_bits;           /* Additional resolution to voltage in6-0 */
 288        u8 fan[7];              /* Register value */
 289        u8 fan_min[7];          /* Register value */
 290        u8 temp1[3];            /* current, over, thyst */
 291        u8 temp_add[2][6];      /* Register value */
 292        u8 fan_div[7];          /* Register encoding, shifted right */
 293        u8 pwm[7];              /*
 294                                 * We only consider the first 3 set of pwm,
 295                                 * although 792 chip has 7 set of pwm.
 296                                 */
 297        u8 pwmenable[3];
 298        u32 alarms;             /* realtime status register encoding,combined */
 299        u8 chassis;             /* Chassis status */
 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_clear(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
 750store_chassis_clear(struct device *dev, struct device_attribute *attr,
 751                        const char *buf, size_t count)
 752{
 753        struct i2c_client *client = to_i2c_client(dev);
 754        struct w83792d_data *data = i2c_get_clientdata(client);
 755        unsigned long val;
 756        u8 reg;
 757
 758        if (kstrtoul(buf, 10, &val) || val != 0)
 759                return -EINVAL;
 760
 761        mutex_lock(&data->update_lock);
 762        reg = w83792d_read_value(client, W83792D_REG_CHASSIS_CLR);
 763        w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, reg | 0x80);
 764        data->valid = 0;                /* Force cache refresh */
 765        mutex_unlock(&data->update_lock);
 766
 767        return count;
 768}
 769
 770/* For Smart Fan I / Thermal Cruise */
 771static ssize_t
 772show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 773                        char *buf)
 774{
 775        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 776        int nr = sensor_attr->index;
 777        struct w83792d_data *data = w83792d_update_device(dev);
 778        return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 779}
 780
 781static ssize_t
 782store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 783                        const char *buf, size_t count)
 784{
 785        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 786        int nr = sensor_attr->index - 1;
 787        struct i2c_client *client = to_i2c_client(dev);
 788        struct w83792d_data *data = i2c_get_clientdata(client);
 789        u8 target_tmp = 0, target_mask = 0;
 790        unsigned long val;
 791        int err;
 792
 793        err = kstrtoul(buf, 10, &val);
 794        if (err)
 795                return err;
 796
 797        target_tmp = val;
 798        target_tmp = target_tmp & 0x7f;
 799        mutex_lock(&data->update_lock);
 800        target_mask = w83792d_read_value(client,
 801                                         W83792D_REG_THERMAL[nr]) & 0x80;
 802        data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
 803        w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 804                (data->thermal_cruise[nr]) | target_mask);
 805        mutex_unlock(&data->update_lock);
 806
 807        return count;
 808}
 809
 810/* For Smart Fan I/Thermal Cruise and Smart Fan II */
 811static ssize_t
 812show_tolerance(struct device *dev, struct device_attribute *attr,
 813                char *buf)
 814{
 815        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 816        int nr = sensor_attr->index;
 817        struct w83792d_data *data = w83792d_update_device(dev);
 818        return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 819}
 820
 821static ssize_t
 822store_tolerance(struct device *dev, struct device_attribute *attr,
 823                const char *buf, size_t count)
 824{
 825        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 826        int nr = sensor_attr->index - 1;
 827        struct i2c_client *client = to_i2c_client(dev);
 828        struct w83792d_data *data = i2c_get_clientdata(client);
 829        u8 tol_tmp, tol_mask;
 830        unsigned long val;
 831        int err;
 832
 833        err = kstrtoul(buf, 10, &val);
 834        if (err)
 835                return err;
 836
 837        mutex_lock(&data->update_lock);
 838        tol_mask = w83792d_read_value(client,
 839                W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 840        tol_tmp = SENSORS_LIMIT(val, 0, 15);
 841        tol_tmp &= 0x0f;
 842        data->tolerance[nr] = tol_tmp;
 843        if (nr == 1)
 844                tol_tmp <<= 4;
 845        w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 846                tol_mask | tol_tmp);
 847        mutex_unlock(&data->update_lock);
 848
 849        return count;
 850}
 851
 852/* For Smart Fan II */
 853static ssize_t
 854show_sf2_point(struct device *dev, struct device_attribute *attr,
 855                char *buf)
 856{
 857        struct sensor_device_attribute_2 *sensor_attr
 858          = to_sensor_dev_attr_2(attr);
 859        int nr = sensor_attr->nr;
 860        int index = sensor_attr->index;
 861        struct w83792d_data *data = w83792d_update_device(dev);
 862        return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 863}
 864
 865static ssize_t
 866store_sf2_point(struct device *dev, struct device_attribute *attr,
 867                const char *buf, size_t count)
 868{
 869        struct sensor_device_attribute_2 *sensor_attr
 870          = to_sensor_dev_attr_2(attr);
 871        int nr = sensor_attr->nr - 1;
 872        int index = sensor_attr->index - 1;
 873        struct i2c_client *client = to_i2c_client(dev);
 874        struct w83792d_data *data = i2c_get_clientdata(client);
 875        u8 mask_tmp = 0;
 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        data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
 885        mask_tmp = w83792d_read_value(client,
 886                                        W83792D_REG_POINTS[index][nr]) & 0x80;
 887        w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 888                mask_tmp|data->sf2_points[index][nr]);
 889        mutex_unlock(&data->update_lock);
 890
 891        return count;
 892}
 893
 894static ssize_t
 895show_sf2_level(struct device *dev, struct device_attribute *attr,
 896                char *buf)
 897{
 898        struct sensor_device_attribute_2 *sensor_attr
 899          = to_sensor_dev_attr_2(attr);
 900        int nr = sensor_attr->nr;
 901        int index = sensor_attr->index;
 902        struct w83792d_data *data = w83792d_update_device(dev);
 903        return sprintf(buf, "%d\n",
 904                        (((data->sf2_levels[index-1][nr]) * 100) / 15));
 905}
 906
 907static ssize_t
 908store_sf2_level(struct device *dev, struct device_attribute *attr,
 909                const char *buf, size_t count)
 910{
 911        struct sensor_device_attribute_2 *sensor_attr
 912          = to_sensor_dev_attr_2(attr);
 913        int nr = sensor_attr->nr;
 914        int index = sensor_attr->index - 1;
 915        struct i2c_client *client = to_i2c_client(dev);
 916        struct w83792d_data *data = i2c_get_clientdata(client);
 917        u8 mask_tmp = 0, level_tmp = 0;
 918        unsigned long val;
 919        int err;
 920
 921        err = kstrtoul(buf, 10, &val);
 922        if (err)
 923                return err;
 924
 925        mutex_lock(&data->update_lock);
 926        data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
 927        mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 928                & ((nr == 3) ? 0xf0 : 0x0f);
 929        if (nr == 3)
 930                level_tmp = data->sf2_levels[index][nr];
 931        else
 932                level_tmp = data->sf2_levels[index][nr] << 4;
 933        w83792d_write_value(client, W83792D_REG_LEVELS[index][nr],
 934                            level_tmp | mask_tmp);
 935        mutex_unlock(&data->update_lock);
 936
 937        return count;
 938}
 939
 940
 941static int
 942w83792d_detect_subclients(struct i2c_client *new_client)
 943{
 944        int i, id, err;
 945        int address = new_client->addr;
 946        u8 val;
 947        struct i2c_adapter *adapter = new_client->adapter;
 948        struct w83792d_data *data = i2c_get_clientdata(new_client);
 949
 950        id = i2c_adapter_id(adapter);
 951        if (force_subclients[0] == id && force_subclients[1] == address) {
 952                for (i = 2; i <= 3; i++) {
 953                        if (force_subclients[i] < 0x48 ||
 954                            force_subclients[i] > 0x4f) {
 955                                dev_err(&new_client->dev, "invalid subclient "
 956                                        "address %d; must be 0x48-0x4f\n",
 957                                        force_subclients[i]);
 958                                err = -ENODEV;
 959                                goto ERROR_SC_0;
 960                        }
 961                }
 962                w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
 963                                        (force_subclients[2] & 0x07) |
 964                                        ((force_subclients[3] & 0x07) << 4));
 965        }
 966
 967        val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
 968        if (!(val & 0x08))
 969                data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
 970        if (!(val & 0x80)) {
 971                if ((data->lm75[0] != NULL) &&
 972                        ((val & 0x7) == ((val >> 4) & 0x7))) {
 973                        dev_err(&new_client->dev, "duplicate addresses 0x%x, "
 974                                "use force_subclient\n", data->lm75[0]->addr);
 975                        err = -ENODEV;
 976                        goto ERROR_SC_1;
 977                }
 978                data->lm75[1] = i2c_new_dummy(adapter,
 979                                              0x48 + ((val >> 4) & 0x7));
 980        }
 981
 982        return 0;
 983
 984/* Undo inits in case of errors */
 985
 986ERROR_SC_1:
 987        if (data->lm75[0] != NULL)
 988                i2c_unregister_device(data->lm75[0]);
 989ERROR_SC_0:
 990        return err;
 991}
 992
 993static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 994static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 995static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 996static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 997static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
 998static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
 999static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
1000static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
1001static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
1002static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
1003                        show_in_min, store_in_min, 0);
1004static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
1005                        show_in_min, store_in_min, 1);
1006static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
1007                        show_in_min, store_in_min, 2);
1008static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
1009                        show_in_min, store_in_min, 3);
1010static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
1011                        show_in_min, store_in_min, 4);
1012static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
1013                        show_in_min, store_in_min, 5);
1014static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
1015                        show_in_min, store_in_min, 6);
1016static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
1017                        show_in_min, store_in_min, 7);
1018static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
1019                        show_in_min, store_in_min, 8);
1020static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
1021                        show_in_max, store_in_max, 0);
1022static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
1023                        show_in_max, store_in_max, 1);
1024static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
1025                        show_in_max, store_in_max, 2);
1026static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
1027                        show_in_max, store_in_max, 3);
1028static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
1029                        show_in_max, store_in_max, 4);
1030static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
1031                        show_in_max, store_in_max, 5);
1032static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
1033                        show_in_max, store_in_max, 6);
1034static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
1035                        show_in_max, store_in_max, 7);
1036static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
1037                        show_in_max, store_in_max, 8);
1038static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
1039static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
1040static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
1041static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1042                        show_temp1, store_temp1, 0, 1);
1043static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
1044                        store_temp23, 0, 2);
1045static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
1046                        store_temp23, 1, 2);
1047static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1048                        show_temp1, store_temp1, 0, 2);
1049static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1050                        show_temp23, store_temp23, 0, 4);
1051static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1052                        show_temp23, store_temp23, 1, 4);
1053static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1054static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
1055static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
1056static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
1057static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
1058static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1059static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1060static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1061static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1062static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1063static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1064static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1065static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1066static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1067static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1068static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1069static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1070static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1071static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1072static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1073static DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1074                        show_chassis_clear, store_chassis_clear);
1075static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1076static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1077static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1078static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1079                        show_pwmenable, store_pwmenable, 1);
1080static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1081                        show_pwmenable, store_pwmenable, 2);
1082static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1083                        show_pwmenable, store_pwmenable, 3);
1084static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1085                        show_pwm_mode, store_pwm_mode, 0);
1086static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1087                        show_pwm_mode, store_pwm_mode, 1);
1088static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1089                        show_pwm_mode, store_pwm_mode, 2);
1090static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1091                        show_tolerance, store_tolerance, 1);
1092static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1093                        show_tolerance, store_tolerance, 2);
1094static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1095                        show_tolerance, store_tolerance, 3);
1096static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1097                        show_thermal_cruise, store_thermal_cruise, 1);
1098static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1099                        show_thermal_cruise, store_thermal_cruise, 2);
1100static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1101                        show_thermal_cruise, store_thermal_cruise, 3);
1102static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1103                        show_sf2_point, store_sf2_point, 1, 1);
1104static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1105                        show_sf2_point, store_sf2_point, 2, 1);
1106static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1107                        show_sf2_point, store_sf2_point, 3, 1);
1108static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1109                        show_sf2_point, store_sf2_point, 4, 1);
1110static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1111                        show_sf2_point, store_sf2_point, 1, 2);
1112static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1113                        show_sf2_point, store_sf2_point, 2, 2);
1114static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1115                        show_sf2_point, store_sf2_point, 3, 2);
1116static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1117                        show_sf2_point, store_sf2_point, 4, 2);
1118static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1119                        show_sf2_point, store_sf2_point, 1, 3);
1120static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1121                        show_sf2_point, store_sf2_point, 2, 3);
1122static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1123                        show_sf2_point, store_sf2_point, 3, 3);
1124static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1125                        show_sf2_point, store_sf2_point, 4, 3);
1126static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1127                        show_sf2_level, store_sf2_level, 1, 1);
1128static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1129                        show_sf2_level, store_sf2_level, 2, 1);
1130static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1131                        show_sf2_level, store_sf2_level, 3, 1);
1132static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1133                        show_sf2_level, store_sf2_level, 1, 2);
1134static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1135                        show_sf2_level, store_sf2_level, 2, 2);
1136static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1137                        show_sf2_level, store_sf2_level, 3, 2);
1138static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1139                        show_sf2_level, store_sf2_level, 1, 3);
1140static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1141                        show_sf2_level, store_sf2_level, 2, 3);
1142static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1143                        show_sf2_level, store_sf2_level, 3, 3);
1144static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1145static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1146static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1147static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1148static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1149static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1150static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1151static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1152                        show_fan_min, store_fan_min, 1);
1153static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1154                        show_fan_min, store_fan_min, 2);
1155static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1156                        show_fan_min, store_fan_min, 3);
1157static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1158                        show_fan_min, store_fan_min, 4);
1159static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1160                        show_fan_min, store_fan_min, 5);
1161static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1162                        show_fan_min, store_fan_min, 6);
1163static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1164                        show_fan_min, store_fan_min, 7);
1165static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1166                        show_fan_div, store_fan_div, 1);
1167static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1168                        show_fan_div, store_fan_div, 2);
1169static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1170                        show_fan_div, store_fan_div, 3);
1171static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1172                        show_fan_div, store_fan_div, 4);
1173static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1174                        show_fan_div, store_fan_div, 5);
1175static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1176                        show_fan_div, store_fan_div, 6);
1177static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1178                        show_fan_div, store_fan_div, 7);
1179
1180static struct attribute *w83792d_attributes_fan[4][5] = {
1181        {
1182                &sensor_dev_attr_fan4_input.dev_attr.attr,
1183                &sensor_dev_attr_fan4_min.dev_attr.attr,
1184                &sensor_dev_attr_fan4_div.dev_attr.attr,
1185                &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1186                NULL
1187        }, {
1188                &sensor_dev_attr_fan5_input.dev_attr.attr,
1189                &sensor_dev_attr_fan5_min.dev_attr.attr,
1190                &sensor_dev_attr_fan5_div.dev_attr.attr,
1191                &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1192                NULL
1193        }, {
1194                &sensor_dev_attr_fan6_input.dev_attr.attr,
1195                &sensor_dev_attr_fan6_min.dev_attr.attr,
1196                &sensor_dev_attr_fan6_div.dev_attr.attr,
1197                &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1198                NULL
1199        }, {
1200                &sensor_dev_attr_fan7_input.dev_attr.attr,
1201                &sensor_dev_attr_fan7_min.dev_attr.attr,
1202                &sensor_dev_attr_fan7_div.dev_attr.attr,
1203                &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1204                NULL
1205        }
1206};
1207
1208static const struct attribute_group w83792d_group_fan[4] = {
1209        { .attrs = w83792d_attributes_fan[0] },
1210        { .attrs = w83792d_attributes_fan[1] },
1211        { .attrs = w83792d_attributes_fan[2] },
1212        { .attrs = w83792d_attributes_fan[3] },
1213};
1214
1215static struct attribute *w83792d_attributes[] = {
1216        &sensor_dev_attr_in0_input.dev_attr.attr,
1217        &sensor_dev_attr_in0_max.dev_attr.attr,
1218        &sensor_dev_attr_in0_min.dev_attr.attr,
1219        &sensor_dev_attr_in1_input.dev_attr.attr,
1220        &sensor_dev_attr_in1_max.dev_attr.attr,
1221        &sensor_dev_attr_in1_min.dev_attr.attr,
1222        &sensor_dev_attr_in2_input.dev_attr.attr,
1223        &sensor_dev_attr_in2_max.dev_attr.attr,
1224        &sensor_dev_attr_in2_min.dev_attr.attr,
1225        &sensor_dev_attr_in3_input.dev_attr.attr,
1226        &sensor_dev_attr_in3_max.dev_attr.attr,
1227        &sensor_dev_attr_in3_min.dev_attr.attr,
1228        &sensor_dev_attr_in4_input.dev_attr.attr,
1229        &sensor_dev_attr_in4_max.dev_attr.attr,
1230        &sensor_dev_attr_in4_min.dev_attr.attr,
1231        &sensor_dev_attr_in5_input.dev_attr.attr,
1232        &sensor_dev_attr_in5_max.dev_attr.attr,
1233        &sensor_dev_attr_in5_min.dev_attr.attr,
1234        &sensor_dev_attr_in6_input.dev_attr.attr,
1235        &sensor_dev_attr_in6_max.dev_attr.attr,
1236        &sensor_dev_attr_in6_min.dev_attr.attr,
1237        &sensor_dev_attr_in7_input.dev_attr.attr,
1238        &sensor_dev_attr_in7_max.dev_attr.attr,
1239        &sensor_dev_attr_in7_min.dev_attr.attr,
1240        &sensor_dev_attr_in8_input.dev_attr.attr,
1241        &sensor_dev_attr_in8_max.dev_attr.attr,
1242        &sensor_dev_attr_in8_min.dev_attr.attr,
1243        &sensor_dev_attr_in0_alarm.dev_attr.attr,
1244        &sensor_dev_attr_in1_alarm.dev_attr.attr,
1245        &sensor_dev_attr_in2_alarm.dev_attr.attr,
1246        &sensor_dev_attr_in3_alarm.dev_attr.attr,
1247        &sensor_dev_attr_in4_alarm.dev_attr.attr,
1248        &sensor_dev_attr_in5_alarm.dev_attr.attr,
1249        &sensor_dev_attr_in6_alarm.dev_attr.attr,
1250        &sensor_dev_attr_in7_alarm.dev_attr.attr,
1251        &sensor_dev_attr_in8_alarm.dev_attr.attr,
1252        &sensor_dev_attr_temp1_input.dev_attr.attr,
1253        &sensor_dev_attr_temp1_max.dev_attr.attr,
1254        &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1255        &sensor_dev_attr_temp2_input.dev_attr.attr,
1256        &sensor_dev_attr_temp2_max.dev_attr.attr,
1257        &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1258        &sensor_dev_attr_temp3_input.dev_attr.attr,
1259        &sensor_dev_attr_temp3_max.dev_attr.attr,
1260        &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1261        &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1262        &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1263        &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1264        &sensor_dev_attr_pwm1.dev_attr.attr,
1265        &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1266        &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1267        &sensor_dev_attr_pwm2.dev_attr.attr,
1268        &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1269        &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1270        &sensor_dev_attr_pwm3.dev_attr.attr,
1271        &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1272        &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1273        &dev_attr_alarms.attr,
1274        &dev_attr_intrusion0_alarm.attr,
1275        &sensor_dev_attr_tolerance1.dev_attr.attr,
1276        &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1277        &sensor_dev_attr_tolerance2.dev_attr.attr,
1278        &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1279        &sensor_dev_attr_tolerance3.dev_attr.attr,
1280        &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1281        &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1282        &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1283        &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1284        &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1285        &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1286        &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1287        &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1288        &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1289        &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1290        &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1291        &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1292        &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1293        &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1294        &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1295        &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1296        &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1297        &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1298        &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1299        &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1300        &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1301        &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1302        &sensor_dev_attr_fan1_input.dev_attr.attr,
1303        &sensor_dev_attr_fan1_min.dev_attr.attr,
1304        &sensor_dev_attr_fan1_div.dev_attr.attr,
1305        &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1306        &sensor_dev_attr_fan2_input.dev_attr.attr,
1307        &sensor_dev_attr_fan2_min.dev_attr.attr,
1308        &sensor_dev_attr_fan2_div.dev_attr.attr,
1309        &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1310        &sensor_dev_attr_fan3_input.dev_attr.attr,
1311        &sensor_dev_attr_fan3_min.dev_attr.attr,
1312        &sensor_dev_attr_fan3_div.dev_attr.attr,
1313        &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1314        NULL
1315};
1316
1317static const struct attribute_group w83792d_group = {
1318        .attrs = w83792d_attributes,
1319};
1320
1321/* Return 0 if detection is successful, -ENODEV otherwise */
1322static int
1323w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)
1324{
1325        struct i2c_adapter *adapter = client->adapter;
1326        int val1, val2;
1327        unsigned short address = client->addr;
1328
1329        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1330                return -ENODEV;
1331
1332        if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
1333                return -ENODEV;
1334
1335        val1 = w83792d_read_value(client, W83792D_REG_BANK);
1336        val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1337        /* Check for Winbond ID if in bank 0 */
1338        if (!(val1 & 0x07)) {  /* is Bank0 */
1339                if ((!(val1 & 0x80) && val2 != 0xa3) ||
1340                    ((val1 & 0x80) && val2 != 0x5c))
1341                        return -ENODEV;
1342        }
1343        /*
1344         * If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1345         * should match
1346         */
1347        if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
1348                return -ENODEV;
1349
1350        /*  Put it now into bank 0 and Vendor ID High Byte */
1351        w83792d_write_value(client,
1352                            W83792D_REG_BANK,
1353                            (w83792d_read_value(client,
1354                                W83792D_REG_BANK) & 0x78) | 0x80);
1355
1356        /* Determine the chip type. */
1357        val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1358        val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1359        if (val1 != 0x7a || val2 != 0x5c)
1360                return -ENODEV;
1361
1362        strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
1363
1364        return 0;
1365}
1366
1367static int
1368w83792d_probe(struct i2c_client *client, const struct i2c_device_id *id)
1369{
1370        struct w83792d_data *data;
1371        struct device *dev = &client->dev;
1372        int i, val1, err;
1373
1374        data = devm_kzalloc(dev, sizeof(struct w83792d_data), GFP_KERNEL);
1375        if (!data)
1376                return -ENOMEM;
1377
1378        i2c_set_clientdata(client, data);
1379        data->valid = 0;
1380        mutex_init(&data->update_lock);
1381
1382        err = w83792d_detect_subclients(client);
1383        if (err)
1384                return err;
1385
1386        /* Initialize the chip */
1387        w83792d_init_client(client);
1388
1389        /* A few vars need to be filled upon startup */
1390        for (i = 0; i < 7; i++) {
1391                data->fan_min[i] = w83792d_read_value(client,
1392                                        W83792D_REG_FAN_MIN[i]);
1393        }
1394
1395        /* Register sysfs hooks */
1396        err = sysfs_create_group(&dev->kobj, &w83792d_group);
1397        if (err)
1398                goto exit_i2c_unregister;
1399
1400        /*
1401         * Read GPIO enable register to check if pins for fan 4,5 are used as
1402         * GPIO
1403         */
1404        val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1405
1406        if (!(val1 & 0x40)) {
1407                err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[0]);
1408                if (err)
1409                        goto exit_remove_files;
1410        }
1411
1412        if (!(val1 & 0x20)) {
1413                err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[1]);
1414                if (err)
1415                        goto exit_remove_files;
1416        }
1417
1418        val1 = w83792d_read_value(client, W83792D_REG_PIN);
1419        if (val1 & 0x40) {
1420                err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[2]);
1421                if (err)
1422                        goto exit_remove_files;
1423        }
1424
1425        if (val1 & 0x04) {
1426                err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[3]);
1427                if (err)
1428                        goto exit_remove_files;
1429        }
1430
1431        data->hwmon_dev = hwmon_device_register(dev);
1432        if (IS_ERR(data->hwmon_dev)) {
1433                err = PTR_ERR(data->hwmon_dev);
1434                goto exit_remove_files;
1435        }
1436
1437        return 0;
1438
1439exit_remove_files:
1440        sysfs_remove_group(&dev->kobj, &w83792d_group);
1441        for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1442                sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1443exit_i2c_unregister:
1444        if (data->lm75[0] != NULL)
1445                i2c_unregister_device(data->lm75[0]);
1446        if (data->lm75[1] != NULL)
1447                i2c_unregister_device(data->lm75[1]);
1448        return err;
1449}
1450
1451static int
1452w83792d_remove(struct i2c_client *client)
1453{
1454        struct w83792d_data *data = i2c_get_clientdata(client);
1455        int i;
1456
1457        hwmon_device_unregister(data->hwmon_dev);
1458        sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1459        for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1460                sysfs_remove_group(&client->dev.kobj,
1461                                   &w83792d_group_fan[i]);
1462
1463        if (data->lm75[0] != NULL)
1464                i2c_unregister_device(data->lm75[0]);
1465        if (data->lm75[1] != NULL)
1466                i2c_unregister_device(data->lm75[1]);
1467
1468        return 0;
1469}
1470
1471static void
1472w83792d_init_client(struct i2c_client *client)
1473{
1474        u8 temp2_cfg, temp3_cfg, vid_in_b;
1475
1476        if (init)
1477                w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1478
1479        /*
1480         * Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1481         * W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1482         * vin0/vin1 can be modified by user;
1483         * W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1484         * vin0/vin1 auto-updated, can NOT be modified by user.
1485         */
1486        vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1487        w83792d_write_value(client, W83792D_REG_VID_IN_B,
1488                            vid_in_b & 0xbf);
1489
1490        temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1491        temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1492        w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1493                                temp2_cfg & 0xe6);
1494        w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1495                                temp3_cfg & 0xe6);
1496
1497        /* Start monitoring */
1498        w83792d_write_value(client, W83792D_REG_CONFIG,
1499                            (w83792d_read_value(client,
1500                                                W83792D_REG_CONFIG) & 0xf7)
1501                            | 0x01);
1502}
1503
1504static struct w83792d_data *w83792d_update_device(struct device *dev)
1505{
1506        struct i2c_client *client = to_i2c_client(dev);
1507        struct w83792d_data *data = i2c_get_clientdata(client);
1508        int i, j;
1509        u8 reg_array_tmp[4], reg_tmp;
1510
1511        mutex_lock(&data->update_lock);
1512
1513        if (time_after
1514            (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1515            || time_before(jiffies, data->last_updated) || !data->valid) {
1516                dev_dbg(dev, "Starting device update\n");
1517
1518                /* Update the voltages measured value and limits */
1519                for (i = 0; i < 9; i++) {
1520                        data->in[i] = w83792d_read_value(client,
1521                                                W83792D_REG_IN[i]);
1522                        data->in_max[i] = w83792d_read_value(client,
1523                                                W83792D_REG_IN_MAX[i]);
1524                        data->in_min[i] = w83792d_read_value(client,
1525                                                W83792D_REG_IN_MIN[i]);
1526                }
1527                data->low_bits = w83792d_read_value(client,
1528                                                W83792D_REG_LOW_BITS1) +
1529                                 (w83792d_read_value(client,
1530                                                W83792D_REG_LOW_BITS2) << 8);
1531                for (i = 0; i < 7; i++) {
1532                        /* Update the Fan measured value and limits */
1533                        data->fan[i] = w83792d_read_value(client,
1534                                                W83792D_REG_FAN[i]);
1535                        data->fan_min[i] = w83792d_read_value(client,
1536                                                W83792D_REG_FAN_MIN[i]);
1537                        /* Update the PWM/DC Value and PWM/DC flag */
1538                        data->pwm[i] = w83792d_read_value(client,
1539                                                W83792D_REG_PWM[i]);
1540                }
1541
1542                reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1543                data->pwmenable[0] = reg_tmp & 0x03;
1544                data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1545                data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1546
1547                for (i = 0; i < 3; i++) {
1548                        data->temp1[i] = w83792d_read_value(client,
1549                                                        W83792D_REG_TEMP1[i]);
1550                }
1551                for (i = 0; i < 2; i++) {
1552                        for (j = 0; j < 6; j++) {
1553                                data->temp_add[i][j] = w83792d_read_value(
1554                                        client, W83792D_REG_TEMP_ADD[i][j]);
1555                        }
1556                }
1557
1558                /* Update the Fan Divisor */
1559                for (i = 0; i < 4; i++) {
1560                        reg_array_tmp[i] = w83792d_read_value(client,
1561                                                        W83792D_REG_FAN_DIV[i]);
1562                }
1563                data->fan_div[0] = reg_array_tmp[0] & 0x07;
1564                data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1565                data->fan_div[2] = reg_array_tmp[1] & 0x07;
1566                data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1567                data->fan_div[4] = reg_array_tmp[2] & 0x07;
1568                data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1569                data->fan_div[6] = reg_array_tmp[3] & 0x07;
1570
1571                /* Update the realtime status */
1572                data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1573                        (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1574                        (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1575
1576                /* Update CaseOpen status and it's CLR_CHS. */
1577                data->chassis = (w83792d_read_value(client,
1578                        W83792D_REG_CHASSIS) >> 5) & 0x01;
1579
1580                /* Update Thermal Cruise/Smart Fan I target value */
1581                for (i = 0; i < 3; i++) {
1582                        data->thermal_cruise[i] =
1583                                w83792d_read_value(client,
1584                                W83792D_REG_THERMAL[i]) & 0x7f;
1585                }
1586
1587                /* Update Smart Fan I/II tolerance */
1588                reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1589                data->tolerance[0] = reg_tmp & 0x0f;
1590                data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1591                data->tolerance[2] = w83792d_read_value(client,
1592                                        W83792D_REG_TOLERANCE[2]) & 0x0f;
1593
1594                /* Update Smart Fan II temperature points */
1595                for (i = 0; i < 3; i++) {
1596                        for (j = 0; j < 4; j++) {
1597                                data->sf2_points[i][j]
1598                                  = w83792d_read_value(client,
1599                                        W83792D_REG_POINTS[i][j]) & 0x7f;
1600                        }
1601                }
1602
1603                /* Update Smart Fan II duty cycle levels */
1604                for (i = 0; i < 3; i++) {
1605                        reg_tmp = w83792d_read_value(client,
1606                                                W83792D_REG_LEVELS[i][0]);
1607                        data->sf2_levels[i][0] = reg_tmp & 0x0f;
1608                        data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1609                        reg_tmp = w83792d_read_value(client,
1610                                                W83792D_REG_LEVELS[i][2]);
1611                        data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1612                        data->sf2_levels[i][3] = reg_tmp & 0x0f;
1613                }
1614
1615                data->last_updated = jiffies;
1616                data->valid = 1;
1617        }
1618
1619        mutex_unlock(&data->update_lock);
1620
1621#ifdef DEBUG
1622        w83792d_print_debug(data, dev);
1623#endif
1624
1625        return data;
1626}
1627
1628#ifdef DEBUG
1629static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1630{
1631        int i = 0, j = 0;
1632        dev_dbg(dev, "==========The following is the debug message...========\n");
1633        dev_dbg(dev, "9 set of Voltages: =====>\n");
1634        for (i = 0; i < 9; i++) {
1635                dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1636                dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1637                dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1638        }
1639        dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1640        dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1641        dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1642        for (i = 0; i < 7; i++) {
1643                dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1644                dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1645                dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1646        }
1647        dev_dbg(dev, "3 set of Temperatures: =====>\n");
1648        for (i = 0; i < 3; i++)
1649                dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1650
1651        for (i = 0; i < 2; i++) {
1652                for (j = 0; j < 6; j++) {
1653                        dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1654                                                        data->temp_add[i][j]);
1655                }
1656        }
1657
1658        for (i = 0; i < 7; i++)
1659                dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1660
1661        dev_dbg(dev, "==========End of the debug message...================\n");
1662        dev_dbg(dev, "\n");
1663}
1664#endif
1665
1666module_i2c_driver(w83792d_driver);
1667
1668MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
1669MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1670MODULE_LICENSE("GPL");
1671
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