linux/drivers/hwmon/w83791d.c
<<
>>
Prefs
   1/*
   2 * w83791d.c - Part of lm_sensors, Linux kernel modules for hardware
   3 *             monitoring
   4 *
   5 * Copyright (C) 2006-2007 Charles Spirakis <bezaur@gmail.com>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22/*
  23 * Supports following chips:
  24 *
  25 * Chip         #vin    #fanin  #pwm    #temp   wchipid vendid  i2c     ISA
  26 * w83791d      10      5       5       3       0x71    0x5ca3  yes     no
  27 *
  28 * The w83791d chip appears to be part way between the 83781d and the
  29 * 83792d. Thus, this file is derived from both the w83792d.c and
  30 * w83781d.c files.
  31 *
  32 * The w83791g chip is the same as the w83791d but lead-free.
  33 */
  34
  35#include <linux/module.h>
  36#include <linux/init.h>
  37#include <linux/slab.h>
  38#include <linux/i2c.h>
  39#include <linux/hwmon.h>
  40#include <linux/hwmon-vid.h>
  41#include <linux/hwmon-sysfs.h>
  42#include <linux/err.h>
  43#include <linux/mutex.h>
  44#include <linux/jiffies.h>
  45
  46#define NUMBER_OF_VIN           10
  47#define NUMBER_OF_FANIN         5
  48#define NUMBER_OF_TEMPIN        3
  49#define NUMBER_OF_PWM           5
  50
  51/* Addresses to scan */
  52static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
  53                                                I2C_CLIENT_END };
  54
  55/* Insmod parameters */
  56
  57static unsigned short force_subclients[4];
  58module_param_array(force_subclients, short, NULL, 0);
  59MODULE_PARM_DESC(force_subclients,
  60                 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
  61
  62static bool reset;
  63module_param(reset, bool, 0);
  64MODULE_PARM_DESC(reset, "Set to one to force a hardware chip reset");
  65
  66static bool init;
  67module_param(init, bool, 0);
  68MODULE_PARM_DESC(init, "Set to one to force extra software initialization");
  69
  70/* The W83791D registers */
  71static const u8 W83791D_REG_IN[NUMBER_OF_VIN] = {
  72        0x20,                   /* VCOREA in DataSheet */
  73        0x21,                   /* VINR0 in DataSheet */
  74        0x22,                   /* +3.3VIN in DataSheet */
  75        0x23,                   /* VDD5V in DataSheet */
  76        0x24,                   /* +12VIN in DataSheet */
  77        0x25,                   /* -12VIN in DataSheet */
  78        0x26,                   /* -5VIN in DataSheet */
  79        0xB0,                   /* 5VSB in DataSheet */
  80        0xB1,                   /* VBAT in DataSheet */
  81        0xB2                    /* VINR1 in DataSheet */
  82};
  83
  84static const u8 W83791D_REG_IN_MAX[NUMBER_OF_VIN] = {
  85        0x2B,                   /* VCOREA High Limit in DataSheet */
  86        0x2D,                   /* VINR0 High Limit in DataSheet */
  87        0x2F,                   /* +3.3VIN High Limit in DataSheet */
  88        0x31,                   /* VDD5V High Limit in DataSheet */
  89        0x33,                   /* +12VIN High Limit in DataSheet */
  90        0x35,                   /* -12VIN High Limit in DataSheet */
  91        0x37,                   /* -5VIN High Limit in DataSheet */
  92        0xB4,                   /* 5VSB High Limit in DataSheet */
  93        0xB6,                   /* VBAT High Limit in DataSheet */
  94        0xB8                    /* VINR1 High Limit in DataSheet */
  95};
  96static const u8 W83791D_REG_IN_MIN[NUMBER_OF_VIN] = {
  97        0x2C,                   /* VCOREA Low Limit in DataSheet */
  98        0x2E,                   /* VINR0 Low Limit in DataSheet */
  99        0x30,                   /* +3.3VIN Low Limit in DataSheet */
 100        0x32,                   /* VDD5V Low Limit in DataSheet */
 101        0x34,                   /* +12VIN Low Limit in DataSheet */
 102        0x36,                   /* -12VIN Low Limit in DataSheet */
 103        0x38,                   /* -5VIN Low Limit in DataSheet */
 104        0xB5,                   /* 5VSB Low Limit in DataSheet */
 105        0xB7,                   /* VBAT Low Limit in DataSheet */
 106        0xB9                    /* VINR1 Low Limit in DataSheet */
 107};
 108static const u8 W83791D_REG_FAN[NUMBER_OF_FANIN] = {
 109        0x28,                   /* FAN 1 Count in DataSheet */
 110        0x29,                   /* FAN 2 Count in DataSheet */
 111        0x2A,                   /* FAN 3 Count in DataSheet */
 112        0xBA,                   /* FAN 4 Count in DataSheet */
 113        0xBB,                   /* FAN 5 Count in DataSheet */
 114};
 115static const u8 W83791D_REG_FAN_MIN[NUMBER_OF_FANIN] = {
 116        0x3B,                   /* FAN 1 Count Low Limit in DataSheet */
 117        0x3C,                   /* FAN 2 Count Low Limit in DataSheet */
 118        0x3D,                   /* FAN 3 Count Low Limit in DataSheet */
 119        0xBC,                   /* FAN 4 Count Low Limit in DataSheet */
 120        0xBD,                   /* FAN 5 Count Low Limit in DataSheet */
 121};
 122
 123static const u8 W83791D_REG_PWM[NUMBER_OF_PWM] = {
 124        0x81,                   /* PWM 1 duty cycle register in DataSheet */
 125        0x83,                   /* PWM 2 duty cycle register in DataSheet */
 126        0x94,                   /* PWM 3 duty cycle register in DataSheet */
 127        0xA0,                   /* PWM 4 duty cycle register in DataSheet */
 128        0xA1,                   /* PWM 5 duty cycle register in DataSheet */
 129};
 130
 131static const u8 W83791D_REG_TEMP_TARGET[3] = {
 132        0x85,                   /* PWM 1 target temperature for temp 1 */
 133        0x86,                   /* PWM 2 target temperature for temp 2 */
 134        0x96,                   /* PWM 3 target temperature for temp 3 */
 135};
 136
 137static const u8 W83791D_REG_TEMP_TOL[2] = {
 138        0x87,                   /* PWM 1/2 temperature tolerance */
 139        0x97,                   /* PWM 3 temperature tolerance */
 140};
 141
 142static const u8 W83791D_REG_FAN_CFG[2] = {
 143        0x84,                   /* FAN 1/2 configuration */
 144        0x95,                   /* FAN 3 configuration */
 145};
 146
 147static const u8 W83791D_REG_FAN_DIV[3] = {
 148        0x47,                   /* contains FAN1 and FAN2 Divisor */
 149        0x4b,                   /* contains FAN3 Divisor */
 150        0x5C,                   /* contains FAN4 and FAN5 Divisor */
 151};
 152
 153#define W83791D_REG_BANK                0x4E
 154#define W83791D_REG_TEMP2_CONFIG        0xC2
 155#define W83791D_REG_TEMP3_CONFIG        0xCA
 156
 157static const u8 W83791D_REG_TEMP1[3] = {
 158        0x27,                   /* TEMP 1 in DataSheet */
 159        0x39,                   /* TEMP 1 Over in DataSheet */
 160        0x3A,                   /* TEMP 1 Hyst in DataSheet */
 161};
 162
 163static const u8 W83791D_REG_TEMP_ADD[2][6] = {
 164        {0xC0,                  /* TEMP 2 in DataSheet */
 165         0xC1,                  /* TEMP 2(0.5 deg) in DataSheet */
 166         0xC5,                  /* TEMP 2 Over High part in DataSheet */
 167         0xC6,                  /* TEMP 2 Over Low part in DataSheet */
 168         0xC3,                  /* TEMP 2 Thyst High part in DataSheet */
 169         0xC4},                 /* TEMP 2 Thyst Low part in DataSheet */
 170        {0xC8,                  /* TEMP 3 in DataSheet */
 171         0xC9,                  /* TEMP 3(0.5 deg) in DataSheet */
 172         0xCD,                  /* TEMP 3 Over High part in DataSheet */
 173         0xCE,                  /* TEMP 3 Over Low part in DataSheet */
 174         0xCB,                  /* TEMP 3 Thyst High part in DataSheet */
 175         0xCC}                  /* TEMP 3 Thyst Low part in DataSheet */
 176};
 177
 178#define W83791D_REG_BEEP_CONFIG         0x4D
 179
 180static const u8 W83791D_REG_BEEP_CTRL[3] = {
 181        0x56,                   /* BEEP Control Register 1 */
 182        0x57,                   /* BEEP Control Register 2 */
 183        0xA3,                   /* BEEP Control Register 3 */
 184};
 185
 186#define W83791D_REG_GPIO                0x15
 187#define W83791D_REG_CONFIG              0x40
 188#define W83791D_REG_VID_FANDIV          0x47
 189#define W83791D_REG_DID_VID4            0x49
 190#define W83791D_REG_WCHIPID             0x58
 191#define W83791D_REG_CHIPMAN             0x4F
 192#define W83791D_REG_PIN                 0x4B
 193#define W83791D_REG_I2C_SUBADDR         0x4A
 194
 195#define W83791D_REG_ALARM1 0xA9 /* realtime status register1 */
 196#define W83791D_REG_ALARM2 0xAA /* realtime status register2 */
 197#define W83791D_REG_ALARM3 0xAB /* realtime status register3 */
 198
 199#define W83791D_REG_VBAT                0x5D
 200#define W83791D_REG_I2C_ADDR            0x48
 201
 202/*
 203 * The SMBus locks itself. The Winbond W83791D has a bank select register
 204 * (index 0x4e), but the driver only accesses registers in bank 0. Since
 205 * we don't switch banks, we don't need any special code to handle
 206 * locking access between bank switches
 207 */
 208static inline int w83791d_read(struct i2c_client *client, u8 reg)
 209{
 210        return i2c_smbus_read_byte_data(client, reg);
 211}
 212
 213static inline int w83791d_write(struct i2c_client *client, u8 reg, u8 value)
 214{
 215        return i2c_smbus_write_byte_data(client, reg, value);
 216}
 217
 218/*
 219 * The analog voltage inputs have 16mV LSB. Since the sysfs output is
 220 * in mV as would be measured on the chip input pin, need to just
 221 * multiply/divide by 16 to translate from/to register values.
 222 */
 223#define IN_TO_REG(val)          (clamp_val((((val) + 8) / 16), 0, 255))
 224#define IN_FROM_REG(val)        ((val) * 16)
 225
 226static u8 fan_to_reg(long rpm, int div)
 227{
 228        if (rpm == 0)
 229                return 255;
 230        rpm = clamp_val(rpm, 1, 1000000);
 231        return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 232}
 233
 234#define FAN_FROM_REG(val, div)  ((val) == 0 ? -1 : \
 235                                ((val) == 255 ? 0 : \
 236                                        1350000 / ((val) * (div))))
 237
 238/* for temp1 which is 8-bit resolution, LSB = 1 degree Celsius */
 239#define TEMP1_FROM_REG(val)     ((val) * 1000)
 240#define TEMP1_TO_REG(val)       ((val) <= -128000 ? -128 : \
 241                                 (val) >= 127000 ? 127 : \
 242                                 (val) < 0 ? ((val) - 500) / 1000 : \
 243                                 ((val) + 500) / 1000)
 244
 245/*
 246 * for temp2 and temp3 which are 9-bit resolution, LSB = 0.5 degree Celsius
 247 * Assumes the top 8 bits are the integral amount and the bottom 8 bits
 248 * are the fractional amount. Since we only have 0.5 degree resolution,
 249 * the bottom 7 bits will always be zero
 250 */
 251#define TEMP23_FROM_REG(val)    ((val) / 128 * 500)
 252#define TEMP23_TO_REG(val)      ((val) <= -128000 ? 0x8000 : \
 253                                 (val) >= 127500 ? 0x7F80 : \
 254                                 (val) < 0 ? ((val) - 250) / 500 * 128 : \
 255                                 ((val) + 250) / 500 * 128)
 256
 257/* for thermal cruise target temp, 7-bits, LSB = 1 degree Celsius */
 258#define TARGET_TEMP_TO_REG(val)         ((val) < 0 ? 0 : \
 259                                        (val) >= 127000 ? 127 : \
 260                                        ((val) + 500) / 1000)
 261
 262/* for thermal cruise temp tolerance, 4-bits, LSB = 1 degree Celsius */
 263#define TOL_TEMP_TO_REG(val)            ((val) >= 15000 ? 15 : \
 264                                        ((val) + 500) / 1000)
 265
 266#define BEEP_MASK_TO_REG(val)           ((val) & 0xffffff)
 267#define BEEP_MASK_FROM_REG(val)         ((val) & 0xffffff)
 268
 269#define DIV_FROM_REG(val)               (1 << (val))
 270
 271static u8 div_to_reg(int nr, long val)
 272{
 273        int i;
 274
 275        /* fan divisors max out at 128 */
 276        val = clamp_val(val, 1, 128) >> 1;
 277        for (i = 0; i < 7; i++) {
 278                if (val == 0)
 279                        break;
 280                val >>= 1;
 281        }
 282        return (u8) i;
 283}
 284
 285struct w83791d_data {
 286        struct device *hwmon_dev;
 287        struct mutex update_lock;
 288
 289        char valid;                     /* !=0 if following fields are valid */
 290        unsigned long last_updated;     /* In jiffies */
 291
 292        /* array of 2 pointers to subclients */
 293        struct i2c_client *lm75[2];
 294
 295        /* volts */
 296        u8 in[NUMBER_OF_VIN];           /* Register value */
 297        u8 in_max[NUMBER_OF_VIN];       /* Register value */
 298        u8 in_min[NUMBER_OF_VIN];       /* Register value */
 299
 300        /* fans */
 301        u8 fan[NUMBER_OF_FANIN];        /* Register value */
 302        u8 fan_min[NUMBER_OF_FANIN];    /* Register value */
 303        u8 fan_div[NUMBER_OF_FANIN];    /* Register encoding, shifted right */
 304
 305        /* Temperature sensors */
 306
 307        s8 temp1[3];            /* current, over, thyst */
 308        s16 temp_add[2][3];     /* fixed point value. Top 8 bits are the
 309                                 * integral part, bottom 8 bits are the
 310                                 * fractional part. We only use the top
 311                                 * 9 bits as the resolution is only
 312                                 * to the 0.5 degree C...
 313                                 * two sensors with three values
 314                                 * (cur, over, hyst)
 315                                 */
 316
 317        /* PWMs */
 318        u8 pwm[5];              /* pwm duty cycle */
 319        u8 pwm_enable[3];       /* pwm enable status for fan 1-3
 320                                 * (fan 4-5 only support manual mode)
 321                                 */
 322
 323        u8 temp_target[3];      /* pwm 1-3 target temperature */
 324        u8 temp_tolerance[3];   /* pwm 1-3 temperature tolerance */
 325
 326        /* Misc */
 327        u32 alarms;             /* realtime status register encoding,combined */
 328        u8 beep_enable;         /* Global beep enable */
 329        u32 beep_mask;          /* Mask off specific beeps */
 330        u8 vid;                 /* Register encoding, combined */
 331        u8 vrm;                 /* hwmon-vid */
 332};
 333
 334static int w83791d_probe(struct i2c_client *client,
 335                         const struct i2c_device_id *id);
 336static int w83791d_detect(struct i2c_client *client,
 337                          struct i2c_board_info *info);
 338static int w83791d_remove(struct i2c_client *client);
 339
 340static int w83791d_read(struct i2c_client *client, u8 reg);
 341static int w83791d_write(struct i2c_client *client, u8 reg, u8 value);
 342static struct w83791d_data *w83791d_update_device(struct device *dev);
 343
 344#ifdef DEBUG
 345static void w83791d_print_debug(struct w83791d_data *data, struct device *dev);
 346#endif
 347
 348static void w83791d_init_client(struct i2c_client *client);
 349
 350static const struct i2c_device_id w83791d_id[] = {
 351        { "w83791d", 0 },
 352        { }
 353};
 354MODULE_DEVICE_TABLE(i2c, w83791d_id);
 355
 356static struct i2c_driver w83791d_driver = {
 357        .class          = I2C_CLASS_HWMON,
 358        .driver = {
 359                .name = "w83791d",
 360        },
 361        .probe          = w83791d_probe,
 362        .remove         = w83791d_remove,
 363        .id_table       = w83791d_id,
 364        .detect         = w83791d_detect,
 365        .address_list   = normal_i2c,
 366};
 367
 368/* following are the sysfs callback functions */
 369#define show_in_reg(reg) \
 370static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 371                        char *buf) \
 372{ \
 373        struct sensor_device_attribute *sensor_attr = \
 374                                                to_sensor_dev_attr(attr); \
 375        struct w83791d_data *data = w83791d_update_device(dev); \
 376        int nr = sensor_attr->index; \
 377        return sprintf(buf, "%d\n", IN_FROM_REG(data->reg[nr])); \
 378}
 379
 380show_in_reg(in);
 381show_in_reg(in_min);
 382show_in_reg(in_max);
 383
 384#define store_in_reg(REG, reg) \
 385static ssize_t store_in_##reg(struct device *dev, \
 386                                struct device_attribute *attr, \
 387                                const char *buf, size_t count) \
 388{ \
 389        struct sensor_device_attribute *sensor_attr = \
 390                                                to_sensor_dev_attr(attr); \
 391        struct i2c_client *client = to_i2c_client(dev); \
 392        struct w83791d_data *data = i2c_get_clientdata(client); \
 393        int nr = sensor_attr->index; \
 394        unsigned long val; \
 395        int err = kstrtoul(buf, 10, &val); \
 396        if (err) \
 397                return err; \
 398        mutex_lock(&data->update_lock); \
 399        data->in_##reg[nr] = IN_TO_REG(val); \
 400        w83791d_write(client, W83791D_REG_IN_##REG[nr], data->in_##reg[nr]); \
 401        mutex_unlock(&data->update_lock); \
 402         \
 403        return count; \
 404}
 405store_in_reg(MIN, min);
 406store_in_reg(MAX, max);
 407
 408static struct sensor_device_attribute sda_in_input[] = {
 409        SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
 410        SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
 411        SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
 412        SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
 413        SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
 414        SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
 415        SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
 416        SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
 417        SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
 418        SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
 419};
 420
 421static struct sensor_device_attribute sda_in_min[] = {
 422        SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
 423        SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
 424        SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
 425        SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
 426        SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
 427        SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
 428        SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
 429        SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
 430        SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
 431        SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
 432};
 433
 434static struct sensor_device_attribute sda_in_max[] = {
 435        SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
 436        SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
 437        SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
 438        SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
 439        SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
 440        SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
 441        SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
 442        SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
 443        SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
 444        SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
 445};
 446
 447
 448static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
 449                        char *buf)
 450{
 451        struct sensor_device_attribute *sensor_attr =
 452                                                to_sensor_dev_attr(attr);
 453        struct w83791d_data *data = w83791d_update_device(dev);
 454        int bitnr = sensor_attr->index;
 455
 456        return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
 457}
 458
 459static ssize_t store_beep(struct device *dev, struct device_attribute *attr,
 460                        const char *buf, size_t count)
 461{
 462        struct sensor_device_attribute *sensor_attr =
 463                                                to_sensor_dev_attr(attr);
 464        struct i2c_client *client = to_i2c_client(dev);
 465        struct w83791d_data *data = i2c_get_clientdata(client);
 466        int bitnr = sensor_attr->index;
 467        int bytenr = bitnr / 8;
 468        unsigned long val;
 469        int err;
 470
 471        err = kstrtoul(buf, 10, &val);
 472        if (err)
 473                return err;
 474
 475        val = val ? 1 : 0;
 476
 477        mutex_lock(&data->update_lock);
 478
 479        data->beep_mask &= ~(0xff << (bytenr * 8));
 480        data->beep_mask |= w83791d_read(client, W83791D_REG_BEEP_CTRL[bytenr])
 481                << (bytenr * 8);
 482
 483        data->beep_mask &= ~(1 << bitnr);
 484        data->beep_mask |= val << bitnr;
 485
 486        w83791d_write(client, W83791D_REG_BEEP_CTRL[bytenr],
 487                (data->beep_mask >> (bytenr * 8)) & 0xff);
 488
 489        mutex_unlock(&data->update_lock);
 490
 491        return count;
 492}
 493
 494static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
 495                        char *buf)
 496{
 497        struct sensor_device_attribute *sensor_attr =
 498                                                to_sensor_dev_attr(attr);
 499        struct w83791d_data *data = w83791d_update_device(dev);
 500        int bitnr = sensor_attr->index;
 501
 502        return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
 503}
 504
 505/*
 506 * Note: The bitmask for the beep enable/disable is different than
 507 * the bitmask for the alarm.
 508 */
 509static struct sensor_device_attribute sda_in_beep[] = {
 510        SENSOR_ATTR(in0_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 0),
 511        SENSOR_ATTR(in1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 13),
 512        SENSOR_ATTR(in2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 2),
 513        SENSOR_ATTR(in3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 3),
 514        SENSOR_ATTR(in4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 8),
 515        SENSOR_ATTR(in5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 9),
 516        SENSOR_ATTR(in6_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 10),
 517        SENSOR_ATTR(in7_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 16),
 518        SENSOR_ATTR(in8_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 17),
 519        SENSOR_ATTR(in9_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 14),
 520};
 521
 522static struct sensor_device_attribute sda_in_alarm[] = {
 523        SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
 524        SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
 525        SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
 526        SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
 527        SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
 528        SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9),
 529        SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10),
 530        SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19),
 531        SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20),
 532        SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 14),
 533};
 534
 535#define show_fan_reg(reg) \
 536static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 537                                char *buf) \
 538{ \
 539        struct sensor_device_attribute *sensor_attr = \
 540                                                to_sensor_dev_attr(attr); \
 541        struct w83791d_data *data = w83791d_update_device(dev); \
 542        int nr = sensor_attr->index; \
 543        return sprintf(buf, "%d\n", \
 544                FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 545}
 546
 547show_fan_reg(fan);
 548show_fan_reg(fan_min);
 549
 550static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr,
 551                                const char *buf, size_t count)
 552{
 553        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 554        struct i2c_client *client = to_i2c_client(dev);
 555        struct w83791d_data *data = i2c_get_clientdata(client);
 556        int nr = sensor_attr->index;
 557        unsigned long val;
 558        int err;
 559
 560        err = kstrtoul(buf, 10, &val);
 561        if (err)
 562                return err;
 563
 564        mutex_lock(&data->update_lock);
 565        data->fan_min[nr] = fan_to_reg(val, DIV_FROM_REG(data->fan_div[nr]));
 566        w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
 567        mutex_unlock(&data->update_lock);
 568
 569        return count;
 570}
 571
 572static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 573                                char *buf)
 574{
 575        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 576        int nr = sensor_attr->index;
 577        struct w83791d_data *data = w83791d_update_device(dev);
 578        return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr]));
 579}
 580
 581/*
 582 * Note: we save and restore the fan minimum here, because its value is
 583 * determined in part by the fan divisor.  This follows the principle of
 584 * least surprise; the user doesn't expect the fan minimum to change just
 585 * because the divisor changed.
 586 */
 587static ssize_t store_fan_div(struct device *dev, struct device_attribute *attr,
 588                                const char *buf, size_t count)
 589{
 590        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 591        struct i2c_client *client = to_i2c_client(dev);
 592        struct w83791d_data *data = i2c_get_clientdata(client);
 593        int nr = sensor_attr->index;
 594        unsigned long min;
 595        u8 tmp_fan_div;
 596        u8 fan_div_reg;
 597        u8 vbat_reg;
 598        int indx = 0;
 599        u8 keep_mask = 0;
 600        u8 new_shift = 0;
 601        unsigned long val;
 602        int err;
 603
 604        err = kstrtoul(buf, 10, &val);
 605        if (err)
 606                return err;
 607
 608        /* Save fan_min */
 609        min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
 610
 611        mutex_lock(&data->update_lock);
 612        data->fan_div[nr] = div_to_reg(nr, val);
 613
 614        switch (nr) {
 615        case 0:
 616                indx = 0;
 617                keep_mask = 0xcf;
 618                new_shift = 4;
 619                break;
 620        case 1:
 621                indx = 0;
 622                keep_mask = 0x3f;
 623                new_shift = 6;
 624                break;
 625        case 2:
 626                indx = 1;
 627                keep_mask = 0x3f;
 628                new_shift = 6;
 629                break;
 630        case 3:
 631                indx = 2;
 632                keep_mask = 0xf8;
 633                new_shift = 0;
 634                break;
 635        case 4:
 636                indx = 2;
 637                keep_mask = 0x8f;
 638                new_shift = 4;
 639                break;
 640#ifdef DEBUG
 641        default:
 642                dev_warn(dev, "store_fan_div: Unexpected nr seen: %d\n", nr);
 643                count = -EINVAL;
 644                goto err_exit;
 645#endif
 646        }
 647
 648        fan_div_reg = w83791d_read(client, W83791D_REG_FAN_DIV[indx])
 649                        & keep_mask;
 650        tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask;
 651
 652        w83791d_write(client, W83791D_REG_FAN_DIV[indx],
 653                                fan_div_reg | tmp_fan_div);
 654
 655        /* Bit 2 of fans 0-2 is stored in the vbat register (bits 5-7) */
 656        if (nr < 3) {
 657                keep_mask = ~(1 << (nr + 5));
 658                vbat_reg = w83791d_read(client, W83791D_REG_VBAT)
 659                                & keep_mask;
 660                tmp_fan_div = (data->fan_div[nr] << (3 + nr)) & ~keep_mask;
 661                w83791d_write(client, W83791D_REG_VBAT,
 662                                vbat_reg | tmp_fan_div);
 663        }
 664
 665        /* Restore fan_min */
 666        data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr]));
 667        w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
 668
 669#ifdef DEBUG
 670err_exit:
 671#endif
 672        mutex_unlock(&data->update_lock);
 673
 674        return count;
 675}
 676
 677static struct sensor_device_attribute sda_fan_input[] = {
 678        SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
 679        SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
 680        SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
 681        SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
 682        SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
 683};
 684
 685static struct sensor_device_attribute sda_fan_min[] = {
 686        SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO,
 687                        show_fan_min, store_fan_min, 0),
 688        SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO,
 689                        show_fan_min, store_fan_min, 1),
 690        SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO,
 691                        show_fan_min, store_fan_min, 2),
 692        SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO,
 693                        show_fan_min, store_fan_min, 3),
 694        SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO,
 695                        show_fan_min, store_fan_min, 4),
 696};
 697
 698static struct sensor_device_attribute sda_fan_div[] = {
 699        SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO,
 700                        show_fan_div, store_fan_div, 0),
 701        SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO,
 702                        show_fan_div, store_fan_div, 1),
 703        SENSOR_ATTR(fan3_div, S_IWUSR | S_IRUGO,
 704                        show_fan_div, store_fan_div, 2),
 705        SENSOR_ATTR(fan4_div, S_IWUSR | S_IRUGO,
 706                        show_fan_div, store_fan_div, 3),
 707        SENSOR_ATTR(fan5_div, S_IWUSR | S_IRUGO,
 708                        show_fan_div, store_fan_div, 4),
 709};
 710
 711static struct sensor_device_attribute sda_fan_beep[] = {
 712        SENSOR_ATTR(fan1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 6),
 713        SENSOR_ATTR(fan2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 7),
 714        SENSOR_ATTR(fan3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 11),
 715        SENSOR_ATTR(fan4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 21),
 716        SENSOR_ATTR(fan5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 22),
 717};
 718
 719static struct sensor_device_attribute sda_fan_alarm[] = {
 720        SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
 721        SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
 722        SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
 723        SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21),
 724        SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22),
 725};
 726
 727/* read/write PWMs */
 728static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 729                                char *buf)
 730{
 731        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 732        int nr = sensor_attr->index;
 733        struct w83791d_data *data = w83791d_update_device(dev);
 734        return sprintf(buf, "%u\n", data->pwm[nr]);
 735}
 736
 737static ssize_t store_pwm(struct device *dev, struct device_attribute *attr,
 738                const char *buf, size_t count)
 739{
 740        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 741        struct i2c_client *client = to_i2c_client(dev);
 742        struct w83791d_data *data = i2c_get_clientdata(client);
 743        int nr = sensor_attr->index;
 744        unsigned long val;
 745
 746        if (kstrtoul(buf, 10, &val))
 747                return -EINVAL;
 748
 749        mutex_lock(&data->update_lock);
 750        data->pwm[nr] = clamp_val(val, 0, 255);
 751        w83791d_write(client, W83791D_REG_PWM[nr], data->pwm[nr]);
 752        mutex_unlock(&data->update_lock);
 753        return count;
 754}
 755
 756static struct sensor_device_attribute sda_pwm[] = {
 757        SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO,
 758                        show_pwm, store_pwm, 0),
 759        SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO,
 760                        show_pwm, store_pwm, 1),
 761        SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO,
 762                        show_pwm, store_pwm, 2),
 763        SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO,
 764                        show_pwm, store_pwm, 3),
 765        SENSOR_ATTR(pwm5, S_IWUSR | S_IRUGO,
 766                        show_pwm, store_pwm, 4),
 767};
 768
 769static ssize_t show_pwmenable(struct device *dev, struct device_attribute *attr,
 770                                char *buf)
 771{
 772        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 773        int nr = sensor_attr->index;
 774        struct w83791d_data *data = w83791d_update_device(dev);
 775        return sprintf(buf, "%u\n", data->pwm_enable[nr] + 1);
 776}
 777
 778static ssize_t store_pwmenable(struct device *dev,
 779                struct device_attribute *attr, const char *buf, size_t count)
 780{
 781        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 782        struct i2c_client *client = to_i2c_client(dev);
 783        struct w83791d_data *data = i2c_get_clientdata(client);
 784        int nr = sensor_attr->index;
 785        unsigned long val;
 786        u8 reg_cfg_tmp;
 787        u8 reg_idx = 0;
 788        u8 val_shift = 0;
 789        u8 keep_mask = 0;
 790
 791        int ret = kstrtoul(buf, 10, &val);
 792
 793        if (ret || val < 1 || val > 3)
 794                return -EINVAL;
 795
 796        mutex_lock(&data->update_lock);
 797        data->pwm_enable[nr] = val - 1;
 798        switch (nr) {
 799        case 0:
 800                reg_idx = 0;
 801                val_shift = 2;
 802                keep_mask = 0xf3;
 803                break;
 804        case 1:
 805                reg_idx = 0;
 806                val_shift = 4;
 807                keep_mask = 0xcf;
 808                break;
 809        case 2:
 810                reg_idx = 1;
 811                val_shift = 2;
 812                keep_mask = 0xf3;
 813                break;
 814        }
 815
 816        reg_cfg_tmp = w83791d_read(client, W83791D_REG_FAN_CFG[reg_idx]);
 817        reg_cfg_tmp = (reg_cfg_tmp & keep_mask) |
 818                                        data->pwm_enable[nr] << val_shift;
 819
 820        w83791d_write(client, W83791D_REG_FAN_CFG[reg_idx], reg_cfg_tmp);
 821        mutex_unlock(&data->update_lock);
 822
 823        return count;
 824}
 825static struct sensor_device_attribute sda_pwmenable[] = {
 826        SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
 827                        show_pwmenable, store_pwmenable, 0),
 828        SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
 829                        show_pwmenable, store_pwmenable, 1),
 830        SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
 831                        show_pwmenable, store_pwmenable, 2),
 832};
 833
 834/* For Smart Fan I / Thermal Cruise */
 835static ssize_t show_temp_target(struct device *dev,
 836                        struct device_attribute *attr, char *buf)
 837{
 838        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 839        struct w83791d_data *data = w83791d_update_device(dev);
 840        int nr = sensor_attr->index;
 841        return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_target[nr]));
 842}
 843
 844static ssize_t store_temp_target(struct device *dev,
 845                struct device_attribute *attr, const char *buf, size_t count)
 846{
 847        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 848        struct i2c_client *client = to_i2c_client(dev);
 849        struct w83791d_data *data = i2c_get_clientdata(client);
 850        int nr = sensor_attr->index;
 851        long val;
 852        u8 target_mask;
 853
 854        if (kstrtol(buf, 10, &val))
 855                return -EINVAL;
 856
 857        mutex_lock(&data->update_lock);
 858        data->temp_target[nr] = TARGET_TEMP_TO_REG(val);
 859        target_mask = w83791d_read(client,
 860                                W83791D_REG_TEMP_TARGET[nr]) & 0x80;
 861        w83791d_write(client, W83791D_REG_TEMP_TARGET[nr],
 862                                data->temp_target[nr] | target_mask);
 863        mutex_unlock(&data->update_lock);
 864        return count;
 865}
 866
 867static struct sensor_device_attribute sda_temp_target[] = {
 868        SENSOR_ATTR(temp1_target, S_IWUSR | S_IRUGO,
 869                        show_temp_target, store_temp_target, 0),
 870        SENSOR_ATTR(temp2_target, S_IWUSR | S_IRUGO,
 871                        show_temp_target, store_temp_target, 1),
 872        SENSOR_ATTR(temp3_target, S_IWUSR | S_IRUGO,
 873                        show_temp_target, store_temp_target, 2),
 874};
 875
 876static ssize_t show_temp_tolerance(struct device *dev,
 877                        struct device_attribute *attr, char *buf)
 878{
 879        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 880        struct w83791d_data *data = w83791d_update_device(dev);
 881        int nr = sensor_attr->index;
 882        return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_tolerance[nr]));
 883}
 884
 885static ssize_t store_temp_tolerance(struct device *dev,
 886                struct device_attribute *attr, const char *buf, size_t count)
 887{
 888        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 889        struct i2c_client *client = to_i2c_client(dev);
 890        struct w83791d_data *data = i2c_get_clientdata(client);
 891        int nr = sensor_attr->index;
 892        unsigned long val;
 893        u8 target_mask;
 894        u8 reg_idx = 0;
 895        u8 val_shift = 0;
 896        u8 keep_mask = 0;
 897
 898        if (kstrtoul(buf, 10, &val))
 899                return -EINVAL;
 900
 901        switch (nr) {
 902        case 0:
 903                reg_idx = 0;
 904                val_shift = 0;
 905                keep_mask = 0xf0;
 906                break;
 907        case 1:
 908                reg_idx = 0;
 909                val_shift = 4;
 910                keep_mask = 0x0f;
 911                break;
 912        case 2:
 913                reg_idx = 1;
 914                val_shift = 0;
 915                keep_mask = 0xf0;
 916                break;
 917        }
 918
 919        mutex_lock(&data->update_lock);
 920        data->temp_tolerance[nr] = TOL_TEMP_TO_REG(val);
 921        target_mask = w83791d_read(client,
 922                        W83791D_REG_TEMP_TOL[reg_idx]) & keep_mask;
 923        w83791d_write(client, W83791D_REG_TEMP_TOL[reg_idx],
 924                        (data->temp_tolerance[nr] << val_shift) | target_mask);
 925        mutex_unlock(&data->update_lock);
 926        return count;
 927}
 928
 929static struct sensor_device_attribute sda_temp_tolerance[] = {
 930        SENSOR_ATTR(temp1_tolerance, S_IWUSR | S_IRUGO,
 931                        show_temp_tolerance, store_temp_tolerance, 0),
 932        SENSOR_ATTR(temp2_tolerance, S_IWUSR | S_IRUGO,
 933                        show_temp_tolerance, store_temp_tolerance, 1),
 934        SENSOR_ATTR(temp3_tolerance, S_IWUSR | S_IRUGO,
 935                        show_temp_tolerance, store_temp_tolerance, 2),
 936};
 937
 938/* read/write the temperature1, includes measured value and limits */
 939static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr,
 940                                char *buf)
 941{
 942        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 943        struct w83791d_data *data = w83791d_update_device(dev);
 944        return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[attr->index]));
 945}
 946
 947static ssize_t store_temp1(struct device *dev, struct device_attribute *devattr,
 948                                const char *buf, size_t count)
 949{
 950        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 951        struct i2c_client *client = to_i2c_client(dev);
 952        struct w83791d_data *data = i2c_get_clientdata(client);
 953        int nr = attr->index;
 954        long val;
 955        int err;
 956
 957        err = kstrtol(buf, 10, &val);
 958        if (err)
 959                return err;
 960
 961        mutex_lock(&data->update_lock);
 962        data->temp1[nr] = TEMP1_TO_REG(val);
 963        w83791d_write(client, W83791D_REG_TEMP1[nr], data->temp1[nr]);
 964        mutex_unlock(&data->update_lock);
 965        return count;
 966}
 967
 968/* read/write temperature2-3, includes measured value and limits */
 969static ssize_t show_temp23(struct device *dev, struct device_attribute *devattr,
 970                                char *buf)
 971{
 972        struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
 973        struct w83791d_data *data = w83791d_update_device(dev);
 974        int nr = attr->nr;
 975        int index = attr->index;
 976        return sprintf(buf, "%d\n", TEMP23_FROM_REG(data->temp_add[nr][index]));
 977}
 978
 979static ssize_t store_temp23(struct device *dev,
 980                                struct device_attribute *devattr,
 981                                const char *buf, size_t count)
 982{
 983        struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
 984        struct i2c_client *client = to_i2c_client(dev);
 985        struct w83791d_data *data = i2c_get_clientdata(client);
 986        long val;
 987        int err;
 988        int nr = attr->nr;
 989        int index = attr->index;
 990
 991        err = kstrtol(buf, 10, &val);
 992        if (err)
 993                return err;
 994
 995        mutex_lock(&data->update_lock);
 996        data->temp_add[nr][index] = TEMP23_TO_REG(val);
 997        w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2],
 998                                data->temp_add[nr][index] >> 8);
 999        w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2 + 1],
1000                                data->temp_add[nr][index] & 0x80);
1001        mutex_unlock(&data->update_lock);
1002
1003        return count;
1004}
1005
1006static struct sensor_device_attribute_2 sda_temp_input[] = {
1007        SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0),
1008        SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0),
1009        SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0),
1010};
1011
1012static struct sensor_device_attribute_2 sda_temp_max[] = {
1013        SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1014                        show_temp1, store_temp1, 0, 1),
1015        SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR,
1016                        show_temp23, store_temp23, 0, 1),
1017        SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR,
1018                        show_temp23, store_temp23, 1, 1),
1019};
1020
1021static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
1022        SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1023                        show_temp1, store_temp1, 0, 2),
1024        SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1025                        show_temp23, store_temp23, 0, 2),
1026        SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1027                        show_temp23, store_temp23, 1, 2),
1028};
1029
1030/*
1031 * Note: The bitmask for the beep enable/disable is different than
1032 * the bitmask for the alarm.
1033 */
1034static struct sensor_device_attribute sda_temp_beep[] = {
1035        SENSOR_ATTR(temp1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 4),
1036        SENSOR_ATTR(temp2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 5),
1037        SENSOR_ATTR(temp3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 1),
1038};
1039
1040static struct sensor_device_attribute sda_temp_alarm[] = {
1041        SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
1042        SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
1043        SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
1044};
1045
1046/* get reatime status of all sensors items: voltage, temp, fan */
1047static ssize_t show_alarms_reg(struct device *dev,
1048                                struct device_attribute *attr, char *buf)
1049{
1050        struct w83791d_data *data = w83791d_update_device(dev);
1051        return sprintf(buf, "%u\n", data->alarms);
1052}
1053
1054static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1055
1056/* Beep control */
1057
1058#define GLOBAL_BEEP_ENABLE_SHIFT        15
1059#define GLOBAL_BEEP_ENABLE_MASK         (1 << GLOBAL_BEEP_ENABLE_SHIFT)
1060
1061static ssize_t show_beep_enable(struct device *dev,
1062                                struct device_attribute *attr, char *buf)
1063{
1064        struct w83791d_data *data = w83791d_update_device(dev);
1065        return sprintf(buf, "%d\n", data->beep_enable);
1066}
1067
1068static ssize_t show_beep_mask(struct device *dev,
1069                                struct device_attribute *attr, char *buf)
1070{
1071        struct w83791d_data *data = w83791d_update_device(dev);
1072        return sprintf(buf, "%d\n", BEEP_MASK_FROM_REG(data->beep_mask));
1073}
1074
1075
1076static ssize_t store_beep_mask(struct device *dev,
1077                                struct device_attribute *attr,
1078                                const char *buf, size_t count)
1079{
1080        struct i2c_client *client = to_i2c_client(dev);
1081        struct w83791d_data *data = i2c_get_clientdata(client);
1082        int i;
1083        long val;
1084        int err;
1085
1086        err = kstrtol(buf, 10, &val);
1087        if (err)
1088                return err;
1089
1090        mutex_lock(&data->update_lock);
1091
1092        /*
1093         * The beep_enable state overrides any enabling request from
1094         * the masks
1095         */
1096        data->beep_mask = BEEP_MASK_TO_REG(val) & ~GLOBAL_BEEP_ENABLE_MASK;
1097        data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1098
1099        val = data->beep_mask;
1100
1101        for (i = 0; i < 3; i++) {
1102                w83791d_write(client, W83791D_REG_BEEP_CTRL[i], (val & 0xff));
1103                val >>= 8;
1104        }
1105
1106        mutex_unlock(&data->update_lock);
1107
1108        return count;
1109}
1110
1111static ssize_t store_beep_enable(struct device *dev,
1112                                struct device_attribute *attr,
1113                                const char *buf, size_t count)
1114{
1115        struct i2c_client *client = to_i2c_client(dev);
1116        struct w83791d_data *data = i2c_get_clientdata(client);
1117        long val;
1118        int err;
1119
1120        err = kstrtol(buf, 10, &val);
1121        if (err)
1122                return err;
1123
1124        mutex_lock(&data->update_lock);
1125
1126        data->beep_enable = val ? 1 : 0;
1127
1128        /* Keep the full mask value in sync with the current enable */
1129        data->beep_mask &= ~GLOBAL_BEEP_ENABLE_MASK;
1130        data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1131
1132        /*
1133         * The global control is in the second beep control register
1134         * so only need to update that register
1135         */
1136        val = (data->beep_mask >> 8) & 0xff;
1137
1138        w83791d_write(client, W83791D_REG_BEEP_CTRL[1], val);
1139
1140        mutex_unlock(&data->update_lock);
1141
1142        return count;
1143}
1144
1145static struct sensor_device_attribute sda_beep_ctrl[] = {
1146        SENSOR_ATTR(beep_enable, S_IRUGO | S_IWUSR,
1147                        show_beep_enable, store_beep_enable, 0),
1148        SENSOR_ATTR(beep_mask, S_IRUGO | S_IWUSR,
1149                        show_beep_mask, store_beep_mask, 1)
1150};
1151
1152/* cpu voltage regulation information */
1153static ssize_t show_vid_reg(struct device *dev,
1154                                struct device_attribute *attr, char *buf)
1155{
1156        struct w83791d_data *data = w83791d_update_device(dev);
1157        return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1158}
1159
1160static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1161
1162static ssize_t show_vrm_reg(struct device *dev,
1163                                struct device_attribute *attr, char *buf)
1164{
1165        struct w83791d_data *data = dev_get_drvdata(dev);
1166        return sprintf(buf, "%d\n", data->vrm);
1167}
1168
1169static ssize_t store_vrm_reg(struct device *dev,
1170                                struct device_attribute *attr,
1171                                const char *buf, size_t count)
1172{
1173        struct w83791d_data *data = dev_get_drvdata(dev);
1174        unsigned long val;
1175        int err;
1176
1177        /*
1178         * No lock needed as vrm is internal to the driver
1179         * (not read from a chip register) and so is not
1180         * updated in w83791d_update_device()
1181         */
1182
1183        err = kstrtoul(buf, 10, &val);
1184        if (err)
1185                return err;
1186
1187        data->vrm = val;
1188        return count;
1189}
1190
1191static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1192
1193#define IN_UNIT_ATTRS(X) \
1194        &sda_in_input[X].dev_attr.attr, \
1195        &sda_in_min[X].dev_attr.attr,   \
1196        &sda_in_max[X].dev_attr.attr,   \
1197        &sda_in_beep[X].dev_attr.attr,  \
1198        &sda_in_alarm[X].dev_attr.attr
1199
1200#define FAN_UNIT_ATTRS(X) \
1201        &sda_fan_input[X].dev_attr.attr,        \
1202        &sda_fan_min[X].dev_attr.attr,          \
1203        &sda_fan_div[X].dev_attr.attr,          \
1204        &sda_fan_beep[X].dev_attr.attr,         \
1205        &sda_fan_alarm[X].dev_attr.attr
1206
1207#define TEMP_UNIT_ATTRS(X) \
1208        &sda_temp_input[X].dev_attr.attr,       \
1209        &sda_temp_max[X].dev_attr.attr,         \
1210        &sda_temp_max_hyst[X].dev_attr.attr,    \
1211        &sda_temp_beep[X].dev_attr.attr,        \
1212        &sda_temp_alarm[X].dev_attr.attr
1213
1214static struct attribute *w83791d_attributes[] = {
1215        IN_UNIT_ATTRS(0),
1216        IN_UNIT_ATTRS(1),
1217        IN_UNIT_ATTRS(2),
1218        IN_UNIT_ATTRS(3),
1219        IN_UNIT_ATTRS(4),
1220        IN_UNIT_ATTRS(5),
1221        IN_UNIT_ATTRS(6),
1222        IN_UNIT_ATTRS(7),
1223        IN_UNIT_ATTRS(8),
1224        IN_UNIT_ATTRS(9),
1225        FAN_UNIT_ATTRS(0),
1226        FAN_UNIT_ATTRS(1),
1227        FAN_UNIT_ATTRS(2),
1228        TEMP_UNIT_ATTRS(0),
1229        TEMP_UNIT_ATTRS(1),
1230        TEMP_UNIT_ATTRS(2),
1231        &dev_attr_alarms.attr,
1232        &sda_beep_ctrl[0].dev_attr.attr,
1233        &sda_beep_ctrl[1].dev_attr.attr,
1234        &dev_attr_cpu0_vid.attr,
1235        &dev_attr_vrm.attr,
1236        &sda_pwm[0].dev_attr.attr,
1237        &sda_pwm[1].dev_attr.attr,
1238        &sda_pwm[2].dev_attr.attr,
1239        &sda_pwmenable[0].dev_attr.attr,
1240        &sda_pwmenable[1].dev_attr.attr,
1241        &sda_pwmenable[2].dev_attr.attr,
1242        &sda_temp_target[0].dev_attr.attr,
1243        &sda_temp_target[1].dev_attr.attr,
1244        &sda_temp_target[2].dev_attr.attr,
1245        &sda_temp_tolerance[0].dev_attr.attr,
1246        &sda_temp_tolerance[1].dev_attr.attr,
1247        &sda_temp_tolerance[2].dev_attr.attr,
1248        NULL
1249};
1250
1251static const struct attribute_group w83791d_group = {
1252        .attrs = w83791d_attributes,
1253};
1254
1255/*
1256 * Separate group of attributes for fan/pwm 4-5. Their pins can also be
1257 * in use for GPIO in which case their sysfs-interface should not be made
1258 * available
1259 */
1260static struct attribute *w83791d_attributes_fanpwm45[] = {
1261        FAN_UNIT_ATTRS(3),
1262        FAN_UNIT_ATTRS(4),
1263        &sda_pwm[3].dev_attr.attr,
1264        &sda_pwm[4].dev_attr.attr,
1265        NULL
1266};
1267
1268static const struct attribute_group w83791d_group_fanpwm45 = {
1269        .attrs = w83791d_attributes_fanpwm45,
1270};
1271
1272static int w83791d_detect_subclients(struct i2c_client *client)
1273{
1274        struct i2c_adapter *adapter = client->adapter;
1275        struct w83791d_data *data = i2c_get_clientdata(client);
1276        int address = client->addr;
1277        int i, id, err;
1278        u8 val;
1279
1280        id = i2c_adapter_id(adapter);
1281        if (force_subclients[0] == id && force_subclients[1] == address) {
1282                for (i = 2; i <= 3; i++) {
1283                        if (force_subclients[i] < 0x48 ||
1284                            force_subclients[i] > 0x4f) {
1285                                dev_err(&client->dev,
1286                                        "invalid subclient "
1287                                        "address %d; must be 0x48-0x4f\n",
1288                                        force_subclients[i]);
1289                                err = -ENODEV;
1290                                goto error_sc_0;
1291                        }
1292                }
1293                w83791d_write(client, W83791D_REG_I2C_SUBADDR,
1294                                        (force_subclients[2] & 0x07) |
1295                                        ((force_subclients[3] & 0x07) << 4));
1296        }
1297
1298        val = w83791d_read(client, W83791D_REG_I2C_SUBADDR);
1299        if (!(val & 0x08))
1300                data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
1301        if (!(val & 0x80)) {
1302                if ((data->lm75[0] != NULL) &&
1303                                ((val & 0x7) == ((val >> 4) & 0x7))) {
1304                        dev_err(&client->dev,
1305                                "duplicate addresses 0x%x, "
1306                                "use force_subclient\n",
1307                                data->lm75[0]->addr);
1308                        err = -ENODEV;
1309                        goto error_sc_1;
1310                }
1311                data->lm75[1] = i2c_new_dummy(adapter,
1312                                              0x48 + ((val >> 4) & 0x7));
1313        }
1314
1315        return 0;
1316
1317/* Undo inits in case of errors */
1318
1319error_sc_1:
1320        if (data->lm75[0] != NULL)
1321                i2c_unregister_device(data->lm75[0]);
1322error_sc_0:
1323        return err;
1324}
1325
1326
1327/* Return 0 if detection is successful, -ENODEV otherwise */
1328static int w83791d_detect(struct i2c_client *client,
1329                          struct i2c_board_info *info)
1330{
1331        struct i2c_adapter *adapter = client->adapter;
1332        int val1, val2;
1333        unsigned short address = client->addr;
1334
1335        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1336                return -ENODEV;
1337
1338        if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80)
1339                return -ENODEV;
1340
1341        val1 = w83791d_read(client, W83791D_REG_BANK);
1342        val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1343        /* Check for Winbond ID if in bank 0 */
1344        if (!(val1 & 0x07)) {
1345                if ((!(val1 & 0x80) && val2 != 0xa3) ||
1346                    ((val1 & 0x80) && val2 != 0x5c)) {
1347                        return -ENODEV;
1348                }
1349        }
1350        /*
1351         * If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
1352         * should match
1353         */
1354        if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address)
1355                return -ENODEV;
1356
1357        /* We want bank 0 and Vendor ID high byte */
1358        val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78;
1359        w83791d_write(client, W83791D_REG_BANK, val1 | 0x80);
1360
1361        /* Verify it is a Winbond w83791d */
1362        val1 = w83791d_read(client, W83791D_REG_WCHIPID);
1363        val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1364        if (val1 != 0x71 || val2 != 0x5c)
1365                return -ENODEV;
1366
1367        strlcpy(info->type, "w83791d", I2C_NAME_SIZE);
1368
1369        return 0;
1370}
1371
1372static int w83791d_probe(struct i2c_client *client,
1373                         const struct i2c_device_id *id)
1374{
1375        struct w83791d_data *data;
1376        struct device *dev = &client->dev;
1377        int i, err;
1378        u8 has_fanpwm45;
1379
1380#ifdef DEBUG
1381        int val1;
1382        val1 = w83791d_read(client, W83791D_REG_DID_VID4);
1383        dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n",
1384                        (val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1);
1385#endif
1386
1387        data = devm_kzalloc(&client->dev, sizeof(struct w83791d_data),
1388                            GFP_KERNEL);
1389        if (!data)
1390                return -ENOMEM;
1391
1392        i2c_set_clientdata(client, data);
1393        mutex_init(&data->update_lock);
1394
1395        err = w83791d_detect_subclients(client);
1396        if (err)
1397                return err;
1398
1399        /* Initialize the chip */
1400        w83791d_init_client(client);
1401
1402        /*
1403         * If the fan_div is changed, make sure there is a rational
1404         * fan_min in place
1405         */
1406        for (i = 0; i < NUMBER_OF_FANIN; i++)
1407                data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]);
1408
1409        /* Register sysfs hooks */
1410        err = sysfs_create_group(&client->dev.kobj, &w83791d_group);
1411        if (err)
1412                goto error3;
1413
1414        /* Check if pins of fan/pwm 4-5 are in use as GPIO */
1415        has_fanpwm45 = w83791d_read(client, W83791D_REG_GPIO) & 0x10;
1416        if (has_fanpwm45) {
1417                err = sysfs_create_group(&client->dev.kobj,
1418                                         &w83791d_group_fanpwm45);
1419                if (err)
1420                        goto error4;
1421        }
1422
1423        /* Everything is ready, now register the working device */
1424        data->hwmon_dev = hwmon_device_register(dev);
1425        if (IS_ERR(data->hwmon_dev)) {
1426                err = PTR_ERR(data->hwmon_dev);
1427                goto error5;
1428        }
1429
1430        return 0;
1431
1432error5:
1433        if (has_fanpwm45)
1434                sysfs_remove_group(&client->dev.kobj, &w83791d_group_fanpwm45);
1435error4:
1436        sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1437error3:
1438        if (data->lm75[0] != NULL)
1439                i2c_unregister_device(data->lm75[0]);
1440        if (data->lm75[1] != NULL)
1441                i2c_unregister_device(data->lm75[1]);
1442        return err;
1443}
1444
1445static int w83791d_remove(struct i2c_client *client)
1446{
1447        struct w83791d_data *data = i2c_get_clientdata(client);
1448
1449        hwmon_device_unregister(data->hwmon_dev);
1450        sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1451
1452        if (data->lm75[0] != NULL)
1453                i2c_unregister_device(data->lm75[0]);
1454        if (data->lm75[1] != NULL)
1455                i2c_unregister_device(data->lm75[1]);
1456
1457        return 0;
1458}
1459
1460static void w83791d_init_client(struct i2c_client *client)
1461{
1462        struct w83791d_data *data = i2c_get_clientdata(client);
1463        u8 tmp;
1464        u8 old_beep;
1465
1466        /*
1467         * The difference between reset and init is that reset
1468         * does a hard reset of the chip via index 0x40, bit 7,
1469         * but init simply forces certain registers to have "sane"
1470         * values. The hope is that the BIOS has done the right
1471         * thing (which is why the default is reset=0, init=0),
1472         * but if not, reset is the hard hammer and init
1473         * is the soft mallet both of which are trying to whack
1474         * things into place...
1475         * NOTE: The data sheet makes a distinction between
1476         * "power on defaults" and "reset by MR". As far as I can tell,
1477         * the hard reset puts everything into a power-on state so I'm
1478         * not sure what "reset by MR" means or how it can happen.
1479         */
1480        if (reset || init) {
1481                /* keep some BIOS settings when we... */
1482                old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG);
1483
1484                if (reset) {
1485                        /* ... reset the chip and ... */
1486                        w83791d_write(client, W83791D_REG_CONFIG, 0x80);
1487                }
1488
1489                /* ... disable power-on abnormal beep */
1490                w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80);
1491
1492                /* disable the global beep (not done by hard reset) */
1493                tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]);
1494                w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef);
1495
1496                if (init) {
1497                        /* Make sure monitoring is turned on for add-ons */
1498                        tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG);
1499                        if (tmp & 1) {
1500                                w83791d_write(client, W83791D_REG_TEMP2_CONFIG,
1501                                        tmp & 0xfe);
1502                        }
1503
1504                        tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG);
1505                        if (tmp & 1) {
1506                                w83791d_write(client, W83791D_REG_TEMP3_CONFIG,
1507                                        tmp & 0xfe);
1508                        }
1509
1510                        /* Start monitoring */
1511                        tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7;
1512                        w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01);
1513                }
1514        }
1515
1516        data->vrm = vid_which_vrm();
1517}
1518
1519static struct w83791d_data *w83791d_update_device(struct device *dev)
1520{
1521        struct i2c_client *client = to_i2c_client(dev);
1522        struct w83791d_data *data = i2c_get_clientdata(client);
1523        int i, j;
1524        u8 reg_array_tmp[3];
1525        u8 vbat_reg;
1526
1527        mutex_lock(&data->update_lock);
1528
1529        if (time_after(jiffies, data->last_updated + (HZ * 3))
1530                        || !data->valid) {
1531                dev_dbg(dev, "Starting w83791d device update\n");
1532
1533                /* Update the voltages measured value and limits */
1534                for (i = 0; i < NUMBER_OF_VIN; i++) {
1535                        data->in[i] = w83791d_read(client,
1536                                                W83791D_REG_IN[i]);
1537                        data->in_max[i] = w83791d_read(client,
1538                                                W83791D_REG_IN_MAX[i]);
1539                        data->in_min[i] = w83791d_read(client,
1540                                                W83791D_REG_IN_MIN[i]);
1541                }
1542
1543                /* Update the fan counts and limits */
1544                for (i = 0; i < NUMBER_OF_FANIN; i++) {
1545                        /* Update the Fan measured value and limits */
1546                        data->fan[i] = w83791d_read(client,
1547                                                W83791D_REG_FAN[i]);
1548                        data->fan_min[i] = w83791d_read(client,
1549                                                W83791D_REG_FAN_MIN[i]);
1550                }
1551
1552                /* Update the fan divisor */
1553                for (i = 0; i < 3; i++) {
1554                        reg_array_tmp[i] = w83791d_read(client,
1555                                                W83791D_REG_FAN_DIV[i]);
1556                }
1557                data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03;
1558                data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03;
1559                data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03;
1560                data->fan_div[3] = reg_array_tmp[2] & 0x07;
1561                data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07;
1562
1563                /*
1564                 * The fan divisor for fans 0-2 get bit 2 from
1565                 * bits 5-7 respectively of vbat register
1566                 */
1567                vbat_reg = w83791d_read(client, W83791D_REG_VBAT);
1568                for (i = 0; i < 3; i++)
1569                        data->fan_div[i] |= (vbat_reg >> (3 + i)) & 0x04;
1570
1571                /* Update PWM duty cycle */
1572                for (i = 0; i < NUMBER_OF_PWM; i++) {
1573                        data->pwm[i] =  w83791d_read(client,
1574                                                W83791D_REG_PWM[i]);
1575                }
1576
1577                /* Update PWM enable status */
1578                for (i = 0; i < 2; i++) {
1579                        reg_array_tmp[i] = w83791d_read(client,
1580                                                W83791D_REG_FAN_CFG[i]);
1581                }
1582                data->pwm_enable[0] = (reg_array_tmp[0] >> 2) & 0x03;
1583                data->pwm_enable[1] = (reg_array_tmp[0] >> 4) & 0x03;
1584                data->pwm_enable[2] = (reg_array_tmp[1] >> 2) & 0x03;
1585
1586                /* Update PWM target temperature */
1587                for (i = 0; i < 3; i++) {
1588                        data->temp_target[i] = w83791d_read(client,
1589                                W83791D_REG_TEMP_TARGET[i]) & 0x7f;
1590                }
1591
1592                /* Update PWM temperature tolerance */
1593                for (i = 0; i < 2; i++) {
1594                        reg_array_tmp[i] = w83791d_read(client,
1595                                        W83791D_REG_TEMP_TOL[i]);
1596                }
1597                data->temp_tolerance[0] = reg_array_tmp[0] & 0x0f;
1598                data->temp_tolerance[1] = (reg_array_tmp[0] >> 4) & 0x0f;
1599                data->temp_tolerance[2] = reg_array_tmp[1] & 0x0f;
1600
1601                /* Update the first temperature sensor */
1602                for (i = 0; i < 3; i++) {
1603                        data->temp1[i] = w83791d_read(client,
1604                                                W83791D_REG_TEMP1[i]);
1605                }
1606
1607                /* Update the rest of the temperature sensors */
1608                for (i = 0; i < 2; i++) {
1609                        for (j = 0; j < 3; j++) {
1610                                data->temp_add[i][j] =
1611                                        (w83791d_read(client,
1612                                        W83791D_REG_TEMP_ADD[i][j * 2]) << 8) |
1613                                        w83791d_read(client,
1614                                        W83791D_REG_TEMP_ADD[i][j * 2 + 1]);
1615                        }
1616                }
1617
1618                /* Update the realtime status */
1619                data->alarms =
1620                        w83791d_read(client, W83791D_REG_ALARM1) +
1621                        (w83791d_read(client, W83791D_REG_ALARM2) << 8) +
1622                        (w83791d_read(client, W83791D_REG_ALARM3) << 16);
1623
1624                /* Update the beep configuration information */
1625                data->beep_mask =
1626                        w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) +
1627                        (w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) +
1628                        (w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16);
1629
1630                /* Extract global beep enable flag */
1631                data->beep_enable =
1632                        (data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01;
1633
1634                /* Update the cpu voltage information */
1635                i = w83791d_read(client, W83791D_REG_VID_FANDIV);
1636                data->vid = i & 0x0f;
1637                data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01)
1638                                << 4;
1639
1640                data->last_updated = jiffies;
1641                data->valid = 1;
1642        }
1643
1644        mutex_unlock(&data->update_lock);
1645
1646#ifdef DEBUG
1647        w83791d_print_debug(data, dev);
1648#endif
1649
1650        return data;
1651}
1652
1653#ifdef DEBUG
1654static void w83791d_print_debug(struct w83791d_data *data, struct device *dev)
1655{
1656        int i = 0, j = 0;
1657
1658        dev_dbg(dev, "======Start of w83791d debug values======\n");
1659        dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN);
1660        for (i = 0; i < NUMBER_OF_VIN; i++) {
1661                dev_dbg(dev, "vin[%d] is:     0x%02x\n", i, data->in[i]);
1662                dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]);
1663                dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]);
1664        }
1665        dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN);
1666        for (i = 0; i < NUMBER_OF_FANIN; i++) {
1667                dev_dbg(dev, "fan[%d] is:     0x%02x\n", i, data->fan[i]);
1668                dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]);
1669                dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]);
1670        }
1671
1672        /*
1673         * temperature math is signed, but only print out the
1674         * bits that matter
1675         */
1676        dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN);
1677        for (i = 0; i < 3; i++)
1678                dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]);
1679        for (i = 0; i < 2; i++) {
1680                for (j = 0; j < 3; j++) {
1681                        dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j,
1682                                (u16) data->temp_add[i][j]);
1683                }
1684        }
1685
1686        dev_dbg(dev, "Misc Information: ===>\n");
1687        dev_dbg(dev, "alarm is:     0x%08x\n", data->alarms);
1688        dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask);
1689        dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable);
1690        dev_dbg(dev, "vid is: 0x%02x\n", data->vid);
1691        dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm);
1692        dev_dbg(dev, "=======End of w83791d debug values========\n");
1693        dev_dbg(dev, "\n");
1694}
1695#endif
1696
1697module_i2c_driver(w83791d_driver);
1698
1699MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>");
1700MODULE_DESCRIPTION("W83791D driver");
1701MODULE_LICENSE("GPL");
1702
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.