drivers/hwmon/w83791d.c

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This source file includes following definitions.
w83791d_read
w83791d_write
fan_to_reg
div_to_reg
show_beep
store_beep
show_alarm
store_fan_min
show_fan_div
store_fan_div
show_pwm
store_pwm
show_pwmenable
store_pwmenable
show_temp_target
store_temp_target
show_temp_tolerance
store_temp_tolerance
show_temp1
store_temp1
show_temp23
store_temp23
alarms_show
show_beep_enable
show_beep_mask
store_beep_mask
store_beep_enable
cpu0_vid_show
vrm_show
vrm_store
w83791d_detect_subclients
w83791d_detect
w83791d_probe
w83791d_remove
w83791d_init_client
w83791d_update_device
w83791d_print_debug
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * w83791d.c - Part of lm_sensors, Linux kernel modules for hardware
   4  *             monitoring
   5  *
   6  * Copyright (C) 2006-2007 Charles Spirakis <bezaur@gmail.com>
   7  */
   8 
   9 /*
  10  * Supports following chips:
  11  *
  12  * Chip         #vin    #fanin  #pwm    #temp   wchipid vendid  i2c     ISA
  13  * w83791d      10      5       5       3       0x71    0x5ca3  yes     no
  14  *
  15  * The w83791d chip appears to be part way between the 83781d and the
  16  * 83792d. Thus, this file is derived from both the w83792d.c and
  17  * w83781d.c files.
  18  *
  19  * The w83791g chip is the same as the w83791d but lead-free.
  20  */
  21 
  22 #include <linux/module.h>
  23 #include <linux/init.h>
  24 #include <linux/slab.h>
  25 #include <linux/i2c.h>
  26 #include <linux/hwmon.h>
  27 #include <linux/hwmon-vid.h>
  28 #include <linux/hwmon-sysfs.h>
  29 #include <linux/err.h>
  30 #include <linux/mutex.h>
  31 #include <linux/jiffies.h>
  32 
  33 #define NUMBER_OF_VIN           10
  34 #define NUMBER_OF_FANIN         5
  35 #define NUMBER_OF_TEMPIN        3
  36 #define NUMBER_OF_PWM           5
  37 
  38 /* Addresses to scan */
  39 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
  40                                                 I2C_CLIENT_END };
  41 
  42 /* Insmod parameters */
  43 
  44 static unsigned short force_subclients[4];
  45 module_param_array(force_subclients, short, NULL, 0);
  46 MODULE_PARM_DESC(force_subclients,
  47                  "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
  48 
  49 static bool reset;
  50 module_param(reset, bool, 0);
  51 MODULE_PARM_DESC(reset, "Set to one to force a hardware chip reset");
  52 
  53 static bool init;
  54 module_param(init, bool, 0);
  55 MODULE_PARM_DESC(init, "Set to one to force extra software initialization");
  56 
  57 /* The W83791D registers */
  58 static const u8 W83791D_REG_IN[NUMBER_OF_VIN] = {
  59         0x20,                   /* VCOREA in DataSheet */
  60         0x21,                   /* VINR0 in DataSheet */
  61         0x22,                   /* +3.3VIN in DataSheet */
  62         0x23,                   /* VDD5V in DataSheet */
  63         0x24,                   /* +12VIN in DataSheet */
  64         0x25,                   /* -12VIN in DataSheet */
  65         0x26,                   /* -5VIN in DataSheet */
  66         0xB0,                   /* 5VSB in DataSheet */
  67         0xB1,                   /* VBAT in DataSheet */
  68         0xB2                    /* VINR1 in DataSheet */
  69 };
  70 
  71 static const u8 W83791D_REG_IN_MAX[NUMBER_OF_VIN] = {
  72         0x2B,                   /* VCOREA High Limit in DataSheet */
  73         0x2D,                   /* VINR0 High Limit in DataSheet */
  74         0x2F,                   /* +3.3VIN High Limit in DataSheet */
  75         0x31,                   /* VDD5V High Limit in DataSheet */
  76         0x33,                   /* +12VIN High Limit in DataSheet */
  77         0x35,                   /* -12VIN High Limit in DataSheet */
  78         0x37,                   /* -5VIN High Limit in DataSheet */
  79         0xB4,                   /* 5VSB High Limit in DataSheet */
  80         0xB6,                   /* VBAT High Limit in DataSheet */
  81         0xB8                    /* VINR1 High Limit in DataSheet */
  82 };
  83 static const u8 W83791D_REG_IN_MIN[NUMBER_OF_VIN] = {
  84         0x2C,                   /* VCOREA Low Limit in DataSheet */
  85         0x2E,                   /* VINR0 Low Limit in DataSheet */
  86         0x30,                   /* +3.3VIN Low Limit in DataSheet */
  87         0x32,                   /* VDD5V Low Limit in DataSheet */
  88         0x34,                   /* +12VIN Low Limit in DataSheet */
  89         0x36,                   /* -12VIN Low Limit in DataSheet */
  90         0x38,                   /* -5VIN Low Limit in DataSheet */
  91         0xB5,                   /* 5VSB Low Limit in DataSheet */
  92         0xB7,                   /* VBAT Low Limit in DataSheet */
  93         0xB9                    /* VINR1 Low Limit in DataSheet */
  94 };
  95 static const u8 W83791D_REG_FAN[NUMBER_OF_FANIN] = {
  96         0x28,                   /* FAN 1 Count in DataSheet */
  97         0x29,                   /* FAN 2 Count in DataSheet */
  98         0x2A,                   /* FAN 3 Count in DataSheet */
  99         0xBA,                   /* FAN 4 Count in DataSheet */
 100         0xBB,                   /* FAN 5 Count in DataSheet */
 101 };
 102 static const u8 W83791D_REG_FAN_MIN[NUMBER_OF_FANIN] = {
 103         0x3B,                   /* FAN 1 Count Low Limit in DataSheet */
 104         0x3C,                   /* FAN 2 Count Low Limit in DataSheet */
 105         0x3D,                   /* FAN 3 Count Low Limit in DataSheet */
 106         0xBC,                   /* FAN 4 Count Low Limit in DataSheet */
 107         0xBD,                   /* FAN 5 Count Low Limit in DataSheet */
 108 };
 109 
 110 static const u8 W83791D_REG_PWM[NUMBER_OF_PWM] = {
 111         0x81,                   /* PWM 1 duty cycle register in DataSheet */
 112         0x83,                   /* PWM 2 duty cycle register in DataSheet */
 113         0x94,                   /* PWM 3 duty cycle register in DataSheet */
 114         0xA0,                   /* PWM 4 duty cycle register in DataSheet */
 115         0xA1,                   /* PWM 5 duty cycle register in DataSheet */
 116 };
 117 
 118 static const u8 W83791D_REG_TEMP_TARGET[3] = {
 119         0x85,                   /* PWM 1 target temperature for temp 1 */
 120         0x86,                   /* PWM 2 target temperature for temp 2 */
 121         0x96,                   /* PWM 3 target temperature for temp 3 */
 122 };
 123 
 124 static const u8 W83791D_REG_TEMP_TOL[2] = {
 125         0x87,                   /* PWM 1/2 temperature tolerance */
 126         0x97,                   /* PWM 3 temperature tolerance */
 127 };
 128 
 129 static const u8 W83791D_REG_FAN_CFG[2] = {
 130         0x84,                   /* FAN 1/2 configuration */
 131         0x95,                   /* FAN 3 configuration */
 132 };
 133 
 134 static const u8 W83791D_REG_FAN_DIV[3] = {
 135         0x47,                   /* contains FAN1 and FAN2 Divisor */
 136         0x4b,                   /* contains FAN3 Divisor */
 137         0x5C,                   /* contains FAN4 and FAN5 Divisor */
 138 };
 139 
 140 #define W83791D_REG_BANK                0x4E
 141 #define W83791D_REG_TEMP2_CONFIG        0xC2
 142 #define W83791D_REG_TEMP3_CONFIG        0xCA
 143 
 144 static const u8 W83791D_REG_TEMP1[3] = {
 145         0x27,                   /* TEMP 1 in DataSheet */
 146         0x39,                   /* TEMP 1 Over in DataSheet */
 147         0x3A,                   /* TEMP 1 Hyst in DataSheet */
 148 };
 149 
 150 static const u8 W83791D_REG_TEMP_ADD[2][6] = {
 151         {0xC0,                  /* TEMP 2 in DataSheet */
 152          0xC1,                  /* TEMP 2(0.5 deg) in DataSheet */
 153          0xC5,                  /* TEMP 2 Over High part in DataSheet */
 154          0xC6,                  /* TEMP 2 Over Low part in DataSheet */
 155          0xC3,                  /* TEMP 2 Thyst High part in DataSheet */
 156          0xC4},                 /* TEMP 2 Thyst Low part in DataSheet */
 157         {0xC8,                  /* TEMP 3 in DataSheet */
 158          0xC9,                  /* TEMP 3(0.5 deg) in DataSheet */
 159          0xCD,                  /* TEMP 3 Over High part in DataSheet */
 160          0xCE,                  /* TEMP 3 Over Low part in DataSheet */
 161          0xCB,                  /* TEMP 3 Thyst High part in DataSheet */
 162          0xCC}                  /* TEMP 3 Thyst Low part in DataSheet */
 163 };
 164 
 165 #define W83791D_REG_BEEP_CONFIG         0x4D
 166 
 167 static const u8 W83791D_REG_BEEP_CTRL[3] = {
 168         0x56,                   /* BEEP Control Register 1 */
 169         0x57,                   /* BEEP Control Register 2 */
 170         0xA3,                   /* BEEP Control Register 3 */
 171 };
 172 
 173 #define W83791D_REG_GPIO                0x15
 174 #define W83791D_REG_CONFIG              0x40
 175 #define W83791D_REG_VID_FANDIV          0x47
 176 #define W83791D_REG_DID_VID4            0x49
 177 #define W83791D_REG_WCHIPID             0x58
 178 #define W83791D_REG_CHIPMAN             0x4F
 179 #define W83791D_REG_PIN                 0x4B
 180 #define W83791D_REG_I2C_SUBADDR         0x4A
 181 
 182 #define W83791D_REG_ALARM1 0xA9 /* realtime status register1 */
 183 #define W83791D_REG_ALARM2 0xAA /* realtime status register2 */
 184 #define W83791D_REG_ALARM3 0xAB /* realtime status register3 */
 185 
 186 #define W83791D_REG_VBAT                0x5D
 187 #define W83791D_REG_I2C_ADDR            0x48
 188 
 189 /*
 190  * The SMBus locks itself. The Winbond W83791D has a bank select register
 191  * (index 0x4e), but the driver only accesses registers in bank 0. Since
 192  * we don't switch banks, we don't need any special code to handle
 193  * locking access between bank switches
 194  */
 195 static inline int w83791d_read(struct i2c_client *client, u8 reg)
 196 {
 197         return i2c_smbus_read_byte_data(client, reg);
 198 }
 199 
 200 static inline int w83791d_write(struct i2c_client *client, u8 reg, u8 value)
 201 {
 202         return i2c_smbus_write_byte_data(client, reg, value);
 203 }
 204 
 205 /*
 206  * The analog voltage inputs have 16mV LSB. Since the sysfs output is
 207  * in mV as would be measured on the chip input pin, need to just
 208  * multiply/divide by 16 to translate from/to register values.
 209  */
 210 #define IN_TO_REG(val)          (clamp_val((((val) + 8) / 16), 0, 255))
 211 #define IN_FROM_REG(val)        ((val) * 16)
 212 
 213 static u8 fan_to_reg(long rpm, int div)
 214 {
 215         if (rpm == 0)
 216                 return 255;
 217         rpm = clamp_val(rpm, 1, 1000000);
 218         return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 219 }
 220 
 221 #define FAN_FROM_REG(val, div)  ((val) == 0 ? -1 : \
 222                                 ((val) == 255 ? 0 : \
 223                                         1350000 / ((val) * (div))))
 224 
 225 /* for temp1 which is 8-bit resolution, LSB = 1 degree Celsius */
 226 #define TEMP1_FROM_REG(val)     ((val) * 1000)
 227 #define TEMP1_TO_REG(val)       ((val) <= -128000 ? -128 : \
 228                                  (val) >= 127000 ? 127 : \
 229                                  (val) < 0 ? ((val) - 500) / 1000 : \
 230                                  ((val) + 500) / 1000)
 231 
 232 /*
 233  * for temp2 and temp3 which are 9-bit resolution, LSB = 0.5 degree Celsius
 234  * Assumes the top 8 bits are the integral amount and the bottom 8 bits
 235  * are the fractional amount. Since we only have 0.5 degree resolution,
 236  * the bottom 7 bits will always be zero
 237  */
 238 #define TEMP23_FROM_REG(val)    ((val) / 128 * 500)
 239 #define TEMP23_TO_REG(val)      (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \
 240                                                    127500), 500) * 128)
 241 
 242 /* for thermal cruise target temp, 7-bits, LSB = 1 degree Celsius */
 243 #define TARGET_TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \
 244                                                   1000)
 245 
 246 /* for thermal cruise temp tolerance, 4-bits, LSB = 1 degree Celsius */
 247 #define TOL_TEMP_TO_REG(val)    DIV_ROUND_CLOSEST(clamp_val((val), 0, 15000), \
 248                                                   1000)
 249 
 250 #define BEEP_MASK_TO_REG(val)           ((val) & 0xffffff)
 251 #define BEEP_MASK_FROM_REG(val)         ((val) & 0xffffff)
 252 
 253 #define DIV_FROM_REG(val)               (1 << (val))
 254 
 255 static u8 div_to_reg(int nr, long val)
 256 {
 257         int i;
 258 
 259         /* fan divisors max out at 128 */
 260         val = clamp_val(val, 1, 128) >> 1;
 261         for (i = 0; i < 7; i++) {
 262                 if (val == 0)
 263                         break;
 264                 val >>= 1;
 265         }
 266         return (u8) i;
 267 }
 268 
 269 struct w83791d_data {
 270         struct device *hwmon_dev;
 271         struct mutex update_lock;
 272 
 273         char valid;                     /* !=0 if following fields are valid */
 274         unsigned long last_updated;     /* In jiffies */
 275 
 276         /* array of 2 pointers to subclients */
 277         struct i2c_client *lm75[2];
 278 
 279         /* volts */
 280         u8 in[NUMBER_OF_VIN];           /* Register value */
 281         u8 in_max[NUMBER_OF_VIN];       /* Register value */
 282         u8 in_min[NUMBER_OF_VIN];       /* Register value */
 283 
 284         /* fans */
 285         u8 fan[NUMBER_OF_FANIN];        /* Register value */
 286         u8 fan_min[NUMBER_OF_FANIN];    /* Register value */
 287         u8 fan_div[NUMBER_OF_FANIN];    /* Register encoding, shifted right */
 288 
 289         /* Temperature sensors */
 290 
 291         s8 temp1[3];            /* current, over, thyst */
 292         s16 temp_add[2][3];     /* fixed point value. Top 8 bits are the
 293                                  * integral part, bottom 8 bits are the
 294                                  * fractional part. We only use the top
 295                                  * 9 bits as the resolution is only
 296                                  * to the 0.5 degree C...
 297                                  * two sensors with three values
 298                                  * (cur, over, hyst)
 299                                  */
 300 
 301         /* PWMs */
 302         u8 pwm[5];              /* pwm duty cycle */
 303         u8 pwm_enable[3];       /* pwm enable status for fan 1-3
 304                                  * (fan 4-5 only support manual mode)
 305                                  */
 306 
 307         u8 temp_target[3];      /* pwm 1-3 target temperature */
 308         u8 temp_tolerance[3];   /* pwm 1-3 temperature tolerance */
 309 
 310         /* Misc */
 311         u32 alarms;             /* realtime status register encoding,combined */
 312         u8 beep_enable;         /* Global beep enable */
 313         u32 beep_mask;          /* Mask off specific beeps */
 314         u8 vid;                 /* Register encoding, combined */
 315         u8 vrm;                 /* hwmon-vid */
 316 };
 317 
 318 static int w83791d_probe(struct i2c_client *client,
 319                          const struct i2c_device_id *id);
 320 static int w83791d_detect(struct i2c_client *client,
 321                           struct i2c_board_info *info);
 322 static int w83791d_remove(struct i2c_client *client);
 323 
 324 static int w83791d_read(struct i2c_client *client, u8 reg);
 325 static int w83791d_write(struct i2c_client *client, u8 reg, u8 value);
 326 static struct w83791d_data *w83791d_update_device(struct device *dev);
 327 
 328 #ifdef DEBUG
 329 static void w83791d_print_debug(struct w83791d_data *data, struct device *dev);
 330 #endif
 331 
 332 static void w83791d_init_client(struct i2c_client *client);
 333 
 334 static const struct i2c_device_id w83791d_id[] = {
 335         { "w83791d", 0 },
 336         { }
 337 };
 338 MODULE_DEVICE_TABLE(i2c, w83791d_id);
 339 
 340 static struct i2c_driver w83791d_driver = {
 341         .class          = I2C_CLASS_HWMON,
 342         .driver = {
 343                 .name = "w83791d",
 344         },
 345         .probe          = w83791d_probe,
 346         .remove         = w83791d_remove,
 347         .id_table       = w83791d_id,
 348         .detect         = w83791d_detect,
 349         .address_list   = normal_i2c,
 350 };
 351 
 352 /* following are the sysfs callback functions */
 353 #define show_in_reg(reg) \
 354 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 355                         char *buf) \
 356 { \
 357         struct sensor_device_attribute *sensor_attr = \
 358                                                 to_sensor_dev_attr(attr); \
 359         struct w83791d_data *data = w83791d_update_device(dev); \
 360         int nr = sensor_attr->index; \
 361         return sprintf(buf, "%d\n", IN_FROM_REG(data->reg[nr])); \
 362 }
 363 
 364 show_in_reg(in);
 365 show_in_reg(in_min);
 366 show_in_reg(in_max);
 367 
 368 #define store_in_reg(REG, reg) \
 369 static ssize_t store_in_##reg(struct device *dev, \
 370                                 struct device_attribute *attr, \
 371                                 const char *buf, size_t count) \
 372 { \
 373         struct sensor_device_attribute *sensor_attr = \
 374                                                 to_sensor_dev_attr(attr); \
 375         struct i2c_client *client = to_i2c_client(dev); \
 376         struct w83791d_data *data = i2c_get_clientdata(client); \
 377         int nr = sensor_attr->index; \
 378         unsigned long val; \
 379         int err = kstrtoul(buf, 10, &val); \
 380         if (err) \
 381                 return err; \
 382         mutex_lock(&data->update_lock); \
 383         data->in_##reg[nr] = IN_TO_REG(val); \
 384         w83791d_write(client, W83791D_REG_IN_##REG[nr], data->in_##reg[nr]); \
 385         mutex_unlock(&data->update_lock); \
 386          \
 387         return count; \
 388 }
 389 store_in_reg(MIN, min);
 390 store_in_reg(MAX, max);
 391 
 392 static struct sensor_device_attribute sda_in_input[] = {
 393         SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
 394         SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
 395         SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
 396         SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
 397         SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
 398         SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
 399         SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
 400         SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
 401         SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
 402         SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
 403 };
 404 
 405 static struct sensor_device_attribute sda_in_min[] = {
 406         SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
 407         SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
 408         SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
 409         SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
 410         SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
 411         SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
 412         SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
 413         SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
 414         SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
 415         SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
 416 };
 417 
 418 static struct sensor_device_attribute sda_in_max[] = {
 419         SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
 420         SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
 421         SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
 422         SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
 423         SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
 424         SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
 425         SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
 426         SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
 427         SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
 428         SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
 429 };
 430 
 431 
 432 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
 433                         char *buf)
 434 {
 435         struct sensor_device_attribute *sensor_attr =
 436                                                 to_sensor_dev_attr(attr);
 437         struct w83791d_data *data = w83791d_update_device(dev);
 438         int bitnr = sensor_attr->index;
 439 
 440         return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
 441 }
 442 
 443 static ssize_t store_beep(struct device *dev, struct device_attribute *attr,
 444                         const char *buf, size_t count)
 445 {
 446         struct sensor_device_attribute *sensor_attr =
 447                                                 to_sensor_dev_attr(attr);
 448         struct i2c_client *client = to_i2c_client(dev);
 449         struct w83791d_data *data = i2c_get_clientdata(client);
 450         int bitnr = sensor_attr->index;
 451         int bytenr = bitnr / 8;
 452         unsigned long val;
 453         int err;
 454 
 455         err = kstrtoul(buf, 10, &val);
 456         if (err)
 457                 return err;
 458 
 459         val = val ? 1 : 0;
 460 
 461         mutex_lock(&data->update_lock);
 462 
 463         data->beep_mask &= ~(0xff << (bytenr * 8));
 464         data->beep_mask |= w83791d_read(client, W83791D_REG_BEEP_CTRL[bytenr])
 465                 << (bytenr * 8);
 466 
 467         data->beep_mask &= ~(1 << bitnr);
 468         data->beep_mask |= val << bitnr;
 469 
 470         w83791d_write(client, W83791D_REG_BEEP_CTRL[bytenr],
 471                 (data->beep_mask >> (bytenr * 8)) & 0xff);
 472 
 473         mutex_unlock(&data->update_lock);
 474 
 475         return count;
 476 }
 477 
 478 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
 479                         char *buf)
 480 {
 481         struct sensor_device_attribute *sensor_attr =
 482                                                 to_sensor_dev_attr(attr);
 483         struct w83791d_data *data = w83791d_update_device(dev);
 484         int bitnr = sensor_attr->index;
 485 
 486         return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
 487 }
 488 
 489 /*
 490  * Note: The bitmask for the beep enable/disable is different than
 491  * the bitmask for the alarm.
 492  */
 493 static struct sensor_device_attribute sda_in_beep[] = {
 494         SENSOR_ATTR(in0_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 0),
 495         SENSOR_ATTR(in1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 13),
 496         SENSOR_ATTR(in2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 2),
 497         SENSOR_ATTR(in3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 3),
 498         SENSOR_ATTR(in4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 8),
 499         SENSOR_ATTR(in5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 9),
 500         SENSOR_ATTR(in6_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 10),
 501         SENSOR_ATTR(in7_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 16),
 502         SENSOR_ATTR(in8_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 17),
 503         SENSOR_ATTR(in9_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 14),
 504 };
 505 
 506 static struct sensor_device_attribute sda_in_alarm[] = {
 507         SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
 508         SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
 509         SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
 510         SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
 511         SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
 512         SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9),
 513         SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10),
 514         SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19),
 515         SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20),
 516         SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 14),
 517 };
 518 
 519 #define show_fan_reg(reg) \
 520 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 521                                 char *buf) \
 522 { \
 523         struct sensor_device_attribute *sensor_attr = \
 524                                                 to_sensor_dev_attr(attr); \
 525         struct w83791d_data *data = w83791d_update_device(dev); \
 526         int nr = sensor_attr->index; \
 527         return sprintf(buf, "%d\n", \
 528                 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 529 }
 530 
 531 show_fan_reg(fan);
 532 show_fan_reg(fan_min);
 533 
 534 static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr,
 535                                 const char *buf, size_t count)
 536 {
 537         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 538         struct i2c_client *client = to_i2c_client(dev);
 539         struct w83791d_data *data = i2c_get_clientdata(client);
 540         int nr = sensor_attr->index;
 541         unsigned long val;
 542         int err;
 543 
 544         err = kstrtoul(buf, 10, &val);
 545         if (err)
 546                 return err;
 547 
 548         mutex_lock(&data->update_lock);
 549         data->fan_min[nr] = fan_to_reg(val, DIV_FROM_REG(data->fan_div[nr]));
 550         w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
 551         mutex_unlock(&data->update_lock);
 552 
 553         return count;
 554 }
 555 
 556 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 557                                 char *buf)
 558 {
 559         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 560         int nr = sensor_attr->index;
 561         struct w83791d_data *data = w83791d_update_device(dev);
 562         return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr]));
 563 }
 564 
 565 /*
 566  * Note: we save and restore the fan minimum here, because its value is
 567  * determined in part by the fan divisor.  This follows the principle of
 568  * least surprise; the user doesn't expect the fan minimum to change just
 569  * because the divisor changed.
 570  */
 571 static ssize_t store_fan_div(struct device *dev, struct device_attribute *attr,
 572                                 const char *buf, size_t count)
 573 {
 574         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 575         struct i2c_client *client = to_i2c_client(dev);
 576         struct w83791d_data *data = i2c_get_clientdata(client);
 577         int nr = sensor_attr->index;
 578         unsigned long min;
 579         u8 tmp_fan_div;
 580         u8 fan_div_reg;
 581         u8 vbat_reg;
 582         int indx = 0;
 583         u8 keep_mask = 0;
 584         u8 new_shift = 0;
 585         unsigned long val;
 586         int err;
 587 
 588         err = kstrtoul(buf, 10, &val);
 589         if (err)
 590                 return err;
 591 
 592         /* Save fan_min */
 593         min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
 594 
 595         mutex_lock(&data->update_lock);
 596         data->fan_div[nr] = div_to_reg(nr, val);
 597 
 598         switch (nr) {
 599         case 0:
 600                 indx = 0;
 601                 keep_mask = 0xcf;
 602                 new_shift = 4;
 603                 break;
 604         case 1:
 605                 indx = 0;
 606                 keep_mask = 0x3f;
 607                 new_shift = 6;
 608                 break;
 609         case 2:
 610                 indx = 1;
 611                 keep_mask = 0x3f;
 612                 new_shift = 6;
 613                 break;
 614         case 3:
 615                 indx = 2;
 616                 keep_mask = 0xf8;
 617                 new_shift = 0;
 618                 break;
 619         case 4:
 620                 indx = 2;
 621                 keep_mask = 0x8f;
 622                 new_shift = 4;
 623                 break;
 624 #ifdef DEBUG
 625         default:
 626                 dev_warn(dev, "store_fan_div: Unexpected nr seen: %d\n", nr);
 627                 count = -EINVAL;
 628                 goto err_exit;
 629 #endif
 630         }
 631 
 632         fan_div_reg = w83791d_read(client, W83791D_REG_FAN_DIV[indx])
 633                         & keep_mask;
 634         tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask;
 635 
 636         w83791d_write(client, W83791D_REG_FAN_DIV[indx],
 637                                 fan_div_reg | tmp_fan_div);
 638 
 639         /* Bit 2 of fans 0-2 is stored in the vbat register (bits 5-7) */
 640         if (nr < 3) {
 641                 keep_mask = ~(1 << (nr + 5));
 642                 vbat_reg = w83791d_read(client, W83791D_REG_VBAT)
 643                                 & keep_mask;
 644                 tmp_fan_div = (data->fan_div[nr] << (3 + nr)) & ~keep_mask;
 645                 w83791d_write(client, W83791D_REG_VBAT,
 646                                 vbat_reg | tmp_fan_div);
 647         }
 648 
 649         /* Restore fan_min */
 650         data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr]));
 651         w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
 652 
 653 #ifdef DEBUG
 654 err_exit:
 655 #endif
 656         mutex_unlock(&data->update_lock);
 657 
 658         return count;
 659 }
 660 
 661 static struct sensor_device_attribute sda_fan_input[] = {
 662         SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
 663         SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
 664         SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
 665         SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
 666         SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
 667 };
 668 
 669 static struct sensor_device_attribute sda_fan_min[] = {
 670         SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO,
 671                         show_fan_min, store_fan_min, 0),
 672         SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO,
 673                         show_fan_min, store_fan_min, 1),
 674         SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO,
 675                         show_fan_min, store_fan_min, 2),
 676         SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO,
 677                         show_fan_min, store_fan_min, 3),
 678         SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO,
 679                         show_fan_min, store_fan_min, 4),
 680 };
 681 
 682 static struct sensor_device_attribute sda_fan_div[] = {
 683         SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO,
 684                         show_fan_div, store_fan_div, 0),
 685         SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO,
 686                         show_fan_div, store_fan_div, 1),
 687         SENSOR_ATTR(fan3_div, S_IWUSR | S_IRUGO,
 688                         show_fan_div, store_fan_div, 2),
 689         SENSOR_ATTR(fan4_div, S_IWUSR | S_IRUGO,
 690                         show_fan_div, store_fan_div, 3),
 691         SENSOR_ATTR(fan5_div, S_IWUSR | S_IRUGO,
 692                         show_fan_div, store_fan_div, 4),
 693 };
 694 
 695 static struct sensor_device_attribute sda_fan_beep[] = {
 696         SENSOR_ATTR(fan1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 6),
 697         SENSOR_ATTR(fan2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 7),
 698         SENSOR_ATTR(fan3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 11),
 699         SENSOR_ATTR(fan4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 21),
 700         SENSOR_ATTR(fan5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 22),
 701 };
 702 
 703 static struct sensor_device_attribute sda_fan_alarm[] = {
 704         SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
 705         SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
 706         SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
 707         SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21),
 708         SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22),
 709 };
 710 
 711 /* read/write PWMs */
 712 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 713                                 char *buf)
 714 {
 715         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 716         int nr = sensor_attr->index;
 717         struct w83791d_data *data = w83791d_update_device(dev);
 718         return sprintf(buf, "%u\n", data->pwm[nr]);
 719 }
 720 
 721 static ssize_t store_pwm(struct device *dev, struct device_attribute *attr,
 722                 const char *buf, size_t count)
 723 {
 724         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 725         struct i2c_client *client = to_i2c_client(dev);
 726         struct w83791d_data *data = i2c_get_clientdata(client);
 727         int nr = sensor_attr->index;
 728         unsigned long val;
 729 
 730         if (kstrtoul(buf, 10, &val))
 731                 return -EINVAL;
 732 
 733         mutex_lock(&data->update_lock);
 734         data->pwm[nr] = clamp_val(val, 0, 255);
 735         w83791d_write(client, W83791D_REG_PWM[nr], data->pwm[nr]);
 736         mutex_unlock(&data->update_lock);
 737         return count;
 738 }
 739 
 740 static struct sensor_device_attribute sda_pwm[] = {
 741         SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO,
 742                         show_pwm, store_pwm, 0),
 743         SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO,
 744                         show_pwm, store_pwm, 1),
 745         SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO,
 746                         show_pwm, store_pwm, 2),
 747         SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO,
 748                         show_pwm, store_pwm, 3),
 749         SENSOR_ATTR(pwm5, S_IWUSR | S_IRUGO,
 750                         show_pwm, store_pwm, 4),
 751 };
 752 
 753 static ssize_t show_pwmenable(struct device *dev, struct device_attribute *attr,
 754                                 char *buf)
 755 {
 756         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 757         int nr = sensor_attr->index;
 758         struct w83791d_data *data = w83791d_update_device(dev);
 759         return sprintf(buf, "%u\n", data->pwm_enable[nr] + 1);
 760 }
 761 
 762 static ssize_t store_pwmenable(struct device *dev,
 763                 struct device_attribute *attr, const char *buf, size_t count)
 764 {
 765         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 766         struct i2c_client *client = to_i2c_client(dev);
 767         struct w83791d_data *data = i2c_get_clientdata(client);
 768         int nr = sensor_attr->index;
 769         unsigned long val;
 770         u8 reg_cfg_tmp;
 771         u8 reg_idx = 0;
 772         u8 val_shift = 0;
 773         u8 keep_mask = 0;
 774 
 775         int ret = kstrtoul(buf, 10, &val);
 776 
 777         if (ret || val < 1 || val > 3)
 778                 return -EINVAL;
 779 
 780         mutex_lock(&data->update_lock);
 781         data->pwm_enable[nr] = val - 1;
 782         switch (nr) {
 783         case 0:
 784                 reg_idx = 0;
 785                 val_shift = 2;
 786                 keep_mask = 0xf3;
 787                 break;
 788         case 1:
 789                 reg_idx = 0;
 790                 val_shift = 4;
 791                 keep_mask = 0xcf;
 792                 break;
 793         case 2:
 794                 reg_idx = 1;
 795                 val_shift = 2;
 796                 keep_mask = 0xf3;
 797                 break;
 798         }
 799 
 800         reg_cfg_tmp = w83791d_read(client, W83791D_REG_FAN_CFG[reg_idx]);
 801         reg_cfg_tmp = (reg_cfg_tmp & keep_mask) |
 802                                         data->pwm_enable[nr] << val_shift;
 803 
 804         w83791d_write(client, W83791D_REG_FAN_CFG[reg_idx], reg_cfg_tmp);
 805         mutex_unlock(&data->update_lock);
 806 
 807         return count;
 808 }
 809 static struct sensor_device_attribute sda_pwmenable[] = {
 810         SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
 811                         show_pwmenable, store_pwmenable, 0),
 812         SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
 813                         show_pwmenable, store_pwmenable, 1),
 814         SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
 815                         show_pwmenable, store_pwmenable, 2),
 816 };
 817 
 818 /* For Smart Fan I / Thermal Cruise */
 819 static ssize_t show_temp_target(struct device *dev,
 820                         struct device_attribute *attr, char *buf)
 821 {
 822         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 823         struct w83791d_data *data = w83791d_update_device(dev);
 824         int nr = sensor_attr->index;
 825         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_target[nr]));
 826 }
 827 
 828 static ssize_t store_temp_target(struct device *dev,
 829                 struct device_attribute *attr, const char *buf, size_t count)
 830 {
 831         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 832         struct i2c_client *client = to_i2c_client(dev);
 833         struct w83791d_data *data = i2c_get_clientdata(client);
 834         int nr = sensor_attr->index;
 835         long val;
 836         u8 target_mask;
 837 
 838         if (kstrtol(buf, 10, &val))
 839                 return -EINVAL;
 840 
 841         mutex_lock(&data->update_lock);
 842         data->temp_target[nr] = TARGET_TEMP_TO_REG(val);
 843         target_mask = w83791d_read(client,
 844                                 W83791D_REG_TEMP_TARGET[nr]) & 0x80;
 845         w83791d_write(client, W83791D_REG_TEMP_TARGET[nr],
 846                                 data->temp_target[nr] | target_mask);
 847         mutex_unlock(&data->update_lock);
 848         return count;
 849 }
 850 
 851 static struct sensor_device_attribute sda_temp_target[] = {
 852         SENSOR_ATTR(temp1_target, S_IWUSR | S_IRUGO,
 853                         show_temp_target, store_temp_target, 0),
 854         SENSOR_ATTR(temp2_target, S_IWUSR | S_IRUGO,
 855                         show_temp_target, store_temp_target, 1),
 856         SENSOR_ATTR(temp3_target, S_IWUSR | S_IRUGO,
 857                         show_temp_target, store_temp_target, 2),
 858 };
 859 
 860 static ssize_t show_temp_tolerance(struct device *dev,
 861                         struct device_attribute *attr, char *buf)
 862 {
 863         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 864         struct w83791d_data *data = w83791d_update_device(dev);
 865         int nr = sensor_attr->index;
 866         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_tolerance[nr]));
 867 }
 868 
 869 static ssize_t store_temp_tolerance(struct device *dev,
 870                 struct device_attribute *attr, const char *buf, size_t count)
 871 {
 872         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 873         struct i2c_client *client = to_i2c_client(dev);
 874         struct w83791d_data *data = i2c_get_clientdata(client);
 875         int nr = sensor_attr->index;
 876         unsigned long val;
 877         u8 target_mask;
 878         u8 reg_idx = 0;
 879         u8 val_shift = 0;
 880         u8 keep_mask = 0;
 881 
 882         if (kstrtoul(buf, 10, &val))
 883                 return -EINVAL;
 884 
 885         switch (nr) {
 886         case 0:
 887                 reg_idx = 0;
 888                 val_shift = 0;
 889                 keep_mask = 0xf0;
 890                 break;
 891         case 1:
 892                 reg_idx = 0;
 893                 val_shift = 4;
 894                 keep_mask = 0x0f;
 895                 break;
 896         case 2:
 897                 reg_idx = 1;
 898                 val_shift = 0;
 899                 keep_mask = 0xf0;
 900                 break;
 901         }
 902 
 903         mutex_lock(&data->update_lock);
 904         data->temp_tolerance[nr] = TOL_TEMP_TO_REG(val);
 905         target_mask = w83791d_read(client,
 906                         W83791D_REG_TEMP_TOL[reg_idx]) & keep_mask;
 907         w83791d_write(client, W83791D_REG_TEMP_TOL[reg_idx],
 908                         (data->temp_tolerance[nr] << val_shift) | target_mask);
 909         mutex_unlock(&data->update_lock);
 910         return count;
 911 }
 912 
 913 static struct sensor_device_attribute sda_temp_tolerance[] = {
 914         SENSOR_ATTR(temp1_tolerance, S_IWUSR | S_IRUGO,
 915                         show_temp_tolerance, store_temp_tolerance, 0),
 916         SENSOR_ATTR(temp2_tolerance, S_IWUSR | S_IRUGO,
 917                         show_temp_tolerance, store_temp_tolerance, 1),
 918         SENSOR_ATTR(temp3_tolerance, S_IWUSR | S_IRUGO,
 919                         show_temp_tolerance, store_temp_tolerance, 2),
 920 };
 921 
 922 /* read/write the temperature1, includes measured value and limits */
 923 static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr,
 924                                 char *buf)
 925 {
 926         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 927         struct w83791d_data *data = w83791d_update_device(dev);
 928         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[attr->index]));
 929 }
 930 
 931 static ssize_t store_temp1(struct device *dev, struct device_attribute *devattr,
 932                                 const char *buf, size_t count)
 933 {
 934         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 935         struct i2c_client *client = to_i2c_client(dev);
 936         struct w83791d_data *data = i2c_get_clientdata(client);
 937         int nr = attr->index;
 938         long val;
 939         int err;
 940 
 941         err = kstrtol(buf, 10, &val);
 942         if (err)
 943                 return err;
 944 
 945         mutex_lock(&data->update_lock);
 946         data->temp1[nr] = TEMP1_TO_REG(val);
 947         w83791d_write(client, W83791D_REG_TEMP1[nr], data->temp1[nr]);
 948         mutex_unlock(&data->update_lock);
 949         return count;
 950 }
 951 
 952 /* read/write temperature2-3, includes measured value and limits */
 953 static ssize_t show_temp23(struct device *dev, struct device_attribute *devattr,
 954                                 char *buf)
 955 {
 956         struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
 957         struct w83791d_data *data = w83791d_update_device(dev);
 958         int nr = attr->nr;
 959         int index = attr->index;
 960         return sprintf(buf, "%d\n", TEMP23_FROM_REG(data->temp_add[nr][index]));
 961 }
 962 
 963 static ssize_t store_temp23(struct device *dev,
 964                                 struct device_attribute *devattr,
 965                                 const char *buf, size_t count)
 966 {
 967         struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
 968         struct i2c_client *client = to_i2c_client(dev);
 969         struct w83791d_data *data = i2c_get_clientdata(client);
 970         long val;
 971         int err;
 972         int nr = attr->nr;
 973         int index = attr->index;
 974 
 975         err = kstrtol(buf, 10, &val);
 976         if (err)
 977                 return err;
 978 
 979         mutex_lock(&data->update_lock);
 980         data->temp_add[nr][index] = TEMP23_TO_REG(val);
 981         w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2],
 982                                 data->temp_add[nr][index] >> 8);
 983         w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2 + 1],
 984                                 data->temp_add[nr][index] & 0x80);
 985         mutex_unlock(&data->update_lock);
 986 
 987         return count;
 988 }
 989 
 990 static struct sensor_device_attribute_2 sda_temp_input[] = {
 991         SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0),
 992         SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0),
 993         SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0),
 994 };
 995 
 996 static struct sensor_device_attribute_2 sda_temp_max[] = {
 997         SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
 998                         show_temp1, store_temp1, 0, 1),
 999         SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR,
1000                         show_temp23, store_temp23, 0, 1),
1001         SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR,
1002                         show_temp23, store_temp23, 1, 1),
1003 };
1004 
1005 static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
1006         SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1007                         show_temp1, store_temp1, 0, 2),
1008         SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1009                         show_temp23, store_temp23, 0, 2),
1010         SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1011                         show_temp23, store_temp23, 1, 2),
1012 };
1013 
1014 /*
1015  * Note: The bitmask for the beep enable/disable is different than
1016  * the bitmask for the alarm.
1017  */
1018 static struct sensor_device_attribute sda_temp_beep[] = {
1019         SENSOR_ATTR(temp1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 4),
1020         SENSOR_ATTR(temp2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 5),
1021         SENSOR_ATTR(temp3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 1),
1022 };
1023 
1024 static struct sensor_device_attribute sda_temp_alarm[] = {
1025         SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
1026         SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
1027         SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
1028 };
1029 
1030 /* get realtime status of all sensors items: voltage, temp, fan */
1031 static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
1032                            char *buf)
1033 {
1034         struct w83791d_data *data = w83791d_update_device(dev);
1035         return sprintf(buf, "%u\n", data->alarms);
1036 }
1037 
1038 static DEVICE_ATTR_RO(alarms);
1039 
1040 /* Beep control */
1041 
1042 #define GLOBAL_BEEP_ENABLE_SHIFT        15
1043 #define GLOBAL_BEEP_ENABLE_MASK         (1 << GLOBAL_BEEP_ENABLE_SHIFT)
1044 
1045 static ssize_t show_beep_enable(struct device *dev,
1046                                 struct device_attribute *attr, char *buf)
1047 {
1048         struct w83791d_data *data = w83791d_update_device(dev);
1049         return sprintf(buf, "%d\n", data->beep_enable);
1050 }
1051 
1052 static ssize_t show_beep_mask(struct device *dev,
1053                                 struct device_attribute *attr, char *buf)
1054 {
1055         struct w83791d_data *data = w83791d_update_device(dev);
1056         return sprintf(buf, "%d\n", BEEP_MASK_FROM_REG(data->beep_mask));
1057 }
1058 
1059 
1060 static ssize_t store_beep_mask(struct device *dev,
1061                                 struct device_attribute *attr,
1062                                 const char *buf, size_t count)
1063 {
1064         struct i2c_client *client = to_i2c_client(dev);
1065         struct w83791d_data *data = i2c_get_clientdata(client);
1066         int i;
1067         long val;
1068         int err;
1069 
1070         err = kstrtol(buf, 10, &val);
1071         if (err)
1072                 return err;
1073 
1074         mutex_lock(&data->update_lock);
1075 
1076         /*
1077          * The beep_enable state overrides any enabling request from
1078          * the masks
1079          */
1080         data->beep_mask = BEEP_MASK_TO_REG(val) & ~GLOBAL_BEEP_ENABLE_MASK;
1081         data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1082 
1083         val = data->beep_mask;
1084 
1085         for (i = 0; i < 3; i++) {
1086                 w83791d_write(client, W83791D_REG_BEEP_CTRL[i], (val & 0xff));
1087                 val >>= 8;
1088         }
1089 
1090         mutex_unlock(&data->update_lock);
1091 
1092         return count;
1093 }
1094 
1095 static ssize_t store_beep_enable(struct device *dev,
1096                                 struct device_attribute *attr,
1097                                 const char *buf, size_t count)
1098 {
1099         struct i2c_client *client = to_i2c_client(dev);
1100         struct w83791d_data *data = i2c_get_clientdata(client);
1101         long val;
1102         int err;
1103 
1104         err = kstrtol(buf, 10, &val);
1105         if (err)
1106                 return err;
1107 
1108         mutex_lock(&data->update_lock);
1109 
1110         data->beep_enable = val ? 1 : 0;
1111 
1112         /* Keep the full mask value in sync with the current enable */
1113         data->beep_mask &= ~GLOBAL_BEEP_ENABLE_MASK;
1114         data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1115 
1116         /*
1117          * The global control is in the second beep control register
1118          * so only need to update that register
1119          */
1120         val = (data->beep_mask >> 8) & 0xff;
1121 
1122         w83791d_write(client, W83791D_REG_BEEP_CTRL[1], val);
1123 
1124         mutex_unlock(&data->update_lock);
1125 
1126         return count;
1127 }
1128 
1129 static struct sensor_device_attribute sda_beep_ctrl[] = {
1130         SENSOR_ATTR(beep_enable, S_IRUGO | S_IWUSR,
1131                         show_beep_enable, store_beep_enable, 0),
1132         SENSOR_ATTR(beep_mask, S_IRUGO | S_IWUSR,
1133                         show_beep_mask, store_beep_mask, 1)
1134 };
1135 
1136 /* cpu voltage regulation information */
1137 static ssize_t cpu0_vid_show(struct device *dev,
1138                              struct device_attribute *attr, char *buf)
1139 {
1140         struct w83791d_data *data = w83791d_update_device(dev);
1141         return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1142 }
1143 
1144 static DEVICE_ATTR_RO(cpu0_vid);
1145 
1146 static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
1147                         char *buf)
1148 {
1149         struct w83791d_data *data = dev_get_drvdata(dev);
1150         return sprintf(buf, "%d\n", data->vrm);
1151 }
1152 
1153 static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
1154                          const char *buf, size_t count)
1155 {
1156         struct w83791d_data *data = dev_get_drvdata(dev);
1157         unsigned long val;
1158         int err;
1159 
1160         /*
1161          * No lock needed as vrm is internal to the driver
1162          * (not read from a chip register) and so is not
1163          * updated in w83791d_update_device()
1164          */
1165 
1166         err = kstrtoul(buf, 10, &val);
1167         if (err)
1168                 return err;
1169 
1170         if (val > 255)
1171                 return -EINVAL;
1172 
1173         data->vrm = val;
1174         return count;
1175 }
1176 
1177 static DEVICE_ATTR_RW(vrm);
1178 
1179 #define IN_UNIT_ATTRS(X) \
1180         &sda_in_input[X].dev_attr.attr, \
1181         &sda_in_min[X].dev_attr.attr,   \
1182         &sda_in_max[X].dev_attr.attr,   \
1183         &sda_in_beep[X].dev_attr.attr,  \
1184         &sda_in_alarm[X].dev_attr.attr
1185 
1186 #define FAN_UNIT_ATTRS(X) \
1187         &sda_fan_input[X].dev_attr.attr,        \
1188         &sda_fan_min[X].dev_attr.attr,          \
1189         &sda_fan_div[X].dev_attr.attr,          \
1190         &sda_fan_beep[X].dev_attr.attr,         \
1191         &sda_fan_alarm[X].dev_attr.attr
1192 
1193 #define TEMP_UNIT_ATTRS(X) \
1194         &sda_temp_input[X].dev_attr.attr,       \
1195         &sda_temp_max[X].dev_attr.attr,         \
1196         &sda_temp_max_hyst[X].dev_attr.attr,    \
1197         &sda_temp_beep[X].dev_attr.attr,        \
1198         &sda_temp_alarm[X].dev_attr.attr
1199 
1200 static struct attribute *w83791d_attributes[] = {
1201         IN_UNIT_ATTRS(0),
1202         IN_UNIT_ATTRS(1),
1203         IN_UNIT_ATTRS(2),
1204         IN_UNIT_ATTRS(3),
1205         IN_UNIT_ATTRS(4),
1206         IN_UNIT_ATTRS(5),
1207         IN_UNIT_ATTRS(6),
1208         IN_UNIT_ATTRS(7),
1209         IN_UNIT_ATTRS(8),
1210         IN_UNIT_ATTRS(9),
1211         FAN_UNIT_ATTRS(0),
1212         FAN_UNIT_ATTRS(1),
1213         FAN_UNIT_ATTRS(2),
1214         TEMP_UNIT_ATTRS(0),
1215         TEMP_UNIT_ATTRS(1),
1216         TEMP_UNIT_ATTRS(2),
1217         &dev_attr_alarms.attr,
1218         &sda_beep_ctrl[0].dev_attr.attr,
1219         &sda_beep_ctrl[1].dev_attr.attr,
1220         &dev_attr_cpu0_vid.attr,
1221         &dev_attr_vrm.attr,
1222         &sda_pwm[0].dev_attr.attr,
1223         &sda_pwm[1].dev_attr.attr,
1224         &sda_pwm[2].dev_attr.attr,
1225         &sda_pwmenable[0].dev_attr.attr,
1226         &sda_pwmenable[1].dev_attr.attr,
1227         &sda_pwmenable[2].dev_attr.attr,
1228         &sda_temp_target[0].dev_attr.attr,
1229         &sda_temp_target[1].dev_attr.attr,
1230         &sda_temp_target[2].dev_attr.attr,
1231         &sda_temp_tolerance[0].dev_attr.attr,
1232         &sda_temp_tolerance[1].dev_attr.attr,
1233         &sda_temp_tolerance[2].dev_attr.attr,
1234         NULL
1235 };
1236 
1237 static const struct attribute_group w83791d_group = {
1238         .attrs = w83791d_attributes,
1239 };
1240 
1241 /*
1242  * Separate group of attributes for fan/pwm 4-5. Their pins can also be
1243  * in use for GPIO in which case their sysfs-interface should not be made
1244  * available
1245  */
1246 static struct attribute *w83791d_attributes_fanpwm45[] = {
1247         FAN_UNIT_ATTRS(3),
1248         FAN_UNIT_ATTRS(4),
1249         &sda_pwm[3].dev_attr.attr,
1250         &sda_pwm[4].dev_attr.attr,
1251         NULL
1252 };
1253 
1254 static const struct attribute_group w83791d_group_fanpwm45 = {
1255         .attrs = w83791d_attributes_fanpwm45,
1256 };
1257 
1258 static int w83791d_detect_subclients(struct i2c_client *client)
1259 {
1260         struct i2c_adapter *adapter = client->adapter;
1261         struct w83791d_data *data = i2c_get_clientdata(client);
1262         int address = client->addr;
1263         int i, id;
1264         u8 val;
1265 
1266         id = i2c_adapter_id(adapter);
1267         if (force_subclients[0] == id && force_subclients[1] == address) {
1268                 for (i = 2; i <= 3; i++) {
1269                         if (force_subclients[i] < 0x48 ||
1270                             force_subclients[i] > 0x4f) {
1271                                 dev_err(&client->dev,
1272                                         "invalid subclient "
1273                                         "address %d; must be 0x48-0x4f\n",
1274                                         force_subclients[i]);
1275                                 return -ENODEV;
1276                         }
1277                 }
1278                 w83791d_write(client, W83791D_REG_I2C_SUBADDR,
1279                                         (force_subclients[2] & 0x07) |
1280                                         ((force_subclients[3] & 0x07) << 4));
1281         }
1282 
1283         val = w83791d_read(client, W83791D_REG_I2C_SUBADDR);
1284         if (!(val & 0x08))
1285                 data->lm75[0] = devm_i2c_new_dummy_device(&client->dev, adapter,
1286                                                           0x48 + (val & 0x7));
1287         if (!(val & 0x80)) {
1288                 if (!IS_ERR(data->lm75[0]) &&
1289                                 ((val & 0x7) == ((val >> 4) & 0x7))) {
1290                         dev_err(&client->dev,
1291                                 "duplicate addresses 0x%x, "
1292                                 "use force_subclient\n",
1293                                 data->lm75[0]->addr);
1294                         return -ENODEV;
1295                 }
1296                 data->lm75[1] = devm_i2c_new_dummy_device(&client->dev, adapter,
1297                                                           0x48 + ((val >> 4) & 0x7));
1298         }
1299 
1300         return 0;
1301 }
1302 
1303 
1304 /* Return 0 if detection is successful, -ENODEV otherwise */
1305 static int w83791d_detect(struct i2c_client *client,
1306                           struct i2c_board_info *info)
1307 {
1308         struct i2c_adapter *adapter = client->adapter;
1309         int val1, val2;
1310         unsigned short address = client->addr;
1311 
1312         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1313                 return -ENODEV;
1314 
1315         if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80)
1316                 return -ENODEV;
1317 
1318         val1 = w83791d_read(client, W83791D_REG_BANK);
1319         val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1320         /* Check for Winbond ID if in bank 0 */
1321         if (!(val1 & 0x07)) {
1322                 if ((!(val1 & 0x80) && val2 != 0xa3) ||
1323                     ((val1 & 0x80) && val2 != 0x5c)) {
1324                         return -ENODEV;
1325                 }
1326         }
1327         /*
1328          * If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
1329          * should match
1330          */
1331         if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address)
1332                 return -ENODEV;
1333 
1334         /* We want bank 0 and Vendor ID high byte */
1335         val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78;
1336         w83791d_write(client, W83791D_REG_BANK, val1 | 0x80);
1337 
1338         /* Verify it is a Winbond w83791d */
1339         val1 = w83791d_read(client, W83791D_REG_WCHIPID);
1340         val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1341         if (val1 != 0x71 || val2 != 0x5c)
1342                 return -ENODEV;
1343 
1344         strlcpy(info->type, "w83791d", I2C_NAME_SIZE);
1345 
1346         return 0;
1347 }
1348 
1349 static int w83791d_probe(struct i2c_client *client,
1350                          const struct i2c_device_id *id)
1351 {
1352         struct w83791d_data *data;
1353         struct device *dev = &client->dev;
1354         int i, err;
1355         u8 has_fanpwm45;
1356 
1357 #ifdef DEBUG
1358         int val1;
1359         val1 = w83791d_read(client, W83791D_REG_DID_VID4);
1360         dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n",
1361                         (val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1);
1362 #endif
1363 
1364         data = devm_kzalloc(&client->dev, sizeof(struct w83791d_data),
1365                             GFP_KERNEL);
1366         if (!data)
1367                 return -ENOMEM;
1368 
1369         i2c_set_clientdata(client, data);
1370         mutex_init(&data->update_lock);
1371 
1372         err = w83791d_detect_subclients(client);
1373         if (err)
1374                 return err;
1375 
1376         /* Initialize the chip */
1377         w83791d_init_client(client);
1378 
1379         /*
1380          * If the fan_div is changed, make sure there is a rational
1381          * fan_min in place
1382          */
1383         for (i = 0; i < NUMBER_OF_FANIN; i++)
1384                 data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]);
1385 
1386         /* Register sysfs hooks */
1387         err = sysfs_create_group(&client->dev.kobj, &w83791d_group);
1388         if (err)
1389                 return err;
1390 
1391         /* Check if pins of fan/pwm 4-5 are in use as GPIO */
1392         has_fanpwm45 = w83791d_read(client, W83791D_REG_GPIO) & 0x10;
1393         if (has_fanpwm45) {
1394                 err = sysfs_create_group(&client->dev.kobj,
1395                                          &w83791d_group_fanpwm45);
1396                 if (err)
1397                         goto error4;
1398         }
1399 
1400         /* Everything is ready, now register the working device */
1401         data->hwmon_dev = hwmon_device_register(dev);
1402         if (IS_ERR(data->hwmon_dev)) {
1403                 err = PTR_ERR(data->hwmon_dev);
1404                 goto error5;
1405         }
1406 
1407         return 0;
1408 
1409 error5:
1410         if (has_fanpwm45)
1411                 sysfs_remove_group(&client->dev.kobj, &w83791d_group_fanpwm45);
1412 error4:
1413         sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1414         return err;
1415 }
1416 
1417 static int w83791d_remove(struct i2c_client *client)
1418 {
1419         struct w83791d_data *data = i2c_get_clientdata(client);
1420 
1421         hwmon_device_unregister(data->hwmon_dev);
1422         sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1423 
1424         return 0;
1425 }
1426 
1427 static void w83791d_init_client(struct i2c_client *client)
1428 {
1429         struct w83791d_data *data = i2c_get_clientdata(client);
1430         u8 tmp;
1431         u8 old_beep;
1432 
1433         /*
1434          * The difference between reset and init is that reset
1435          * does a hard reset of the chip via index 0x40, bit 7,
1436          * but init simply forces certain registers to have "sane"
1437          * values. The hope is that the BIOS has done the right
1438          * thing (which is why the default is reset=0, init=0),
1439          * but if not, reset is the hard hammer and init
1440          * is the soft mallet both of which are trying to whack
1441          * things into place...
1442          * NOTE: The data sheet makes a distinction between
1443          * "power on defaults" and "reset by MR". As far as I can tell,
1444          * the hard reset puts everything into a power-on state so I'm
1445          * not sure what "reset by MR" means or how it can happen.
1446          */
1447         if (reset || init) {
1448                 /* keep some BIOS settings when we... */
1449                 old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG);
1450 
1451                 if (reset) {
1452                         /* ... reset the chip and ... */
1453                         w83791d_write(client, W83791D_REG_CONFIG, 0x80);
1454                 }
1455 
1456                 /* ... disable power-on abnormal beep */
1457                 w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80);
1458 
1459                 /* disable the global beep (not done by hard reset) */
1460                 tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]);
1461                 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef);
1462 
1463                 if (init) {
1464                         /* Make sure monitoring is turned on for add-ons */
1465                         tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG);
1466                         if (tmp & 1) {
1467                                 w83791d_write(client, W83791D_REG_TEMP2_CONFIG,
1468                                         tmp & 0xfe);
1469                         }
1470 
1471                         tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG);
1472                         if (tmp & 1) {
1473                                 w83791d_write(client, W83791D_REG_TEMP3_CONFIG,
1474                                         tmp & 0xfe);
1475                         }
1476 
1477                         /* Start monitoring */
1478                         tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7;
1479                         w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01);
1480                 }
1481         }
1482 
1483         data->vrm = vid_which_vrm();
1484 }
1485 
1486 static struct w83791d_data *w83791d_update_device(struct device *dev)
1487 {
1488         struct i2c_client *client = to_i2c_client(dev);
1489         struct w83791d_data *data = i2c_get_clientdata(client);
1490         int i, j;
1491         u8 reg_array_tmp[3];
1492         u8 vbat_reg;
1493 
1494         mutex_lock(&data->update_lock);
1495 
1496         if (time_after(jiffies, data->last_updated + (HZ * 3))
1497                         || !data->valid) {
1498                 dev_dbg(dev, "Starting w83791d device update\n");
1499 
1500                 /* Update the voltages measured value and limits */
1501                 for (i = 0; i < NUMBER_OF_VIN; i++) {
1502                         data->in[i] = w83791d_read(client,
1503                                                 W83791D_REG_IN[i]);
1504                         data->in_max[i] = w83791d_read(client,
1505                                                 W83791D_REG_IN_MAX[i]);
1506                         data->in_min[i] = w83791d_read(client,
1507                                                 W83791D_REG_IN_MIN[i]);
1508                 }
1509 
1510                 /* Update the fan counts and limits */
1511                 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1512                         /* Update the Fan measured value and limits */
1513                         data->fan[i] = w83791d_read(client,
1514                                                 W83791D_REG_FAN[i]);
1515                         data->fan_min[i] = w83791d_read(client,
1516                                                 W83791D_REG_FAN_MIN[i]);
1517                 }
1518 
1519                 /* Update the fan divisor */
1520                 for (i = 0; i < 3; i++) {
1521                         reg_array_tmp[i] = w83791d_read(client,
1522                                                 W83791D_REG_FAN_DIV[i]);
1523                 }
1524                 data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03;
1525                 data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03;
1526                 data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03;
1527                 data->fan_div[3] = reg_array_tmp[2] & 0x07;
1528                 data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07;
1529 
1530                 /*
1531                  * The fan divisor for fans 0-2 get bit 2 from
1532                  * bits 5-7 respectively of vbat register
1533                  */
1534                 vbat_reg = w83791d_read(client, W83791D_REG_VBAT);
1535                 for (i = 0; i < 3; i++)
1536                         data->fan_div[i] |= (vbat_reg >> (3 + i)) & 0x04;
1537 
1538                 /* Update PWM duty cycle */
1539                 for (i = 0; i < NUMBER_OF_PWM; i++) {
1540                         data->pwm[i] =  w83791d_read(client,
1541                                                 W83791D_REG_PWM[i]);
1542                 }
1543 
1544                 /* Update PWM enable status */
1545                 for (i = 0; i < 2; i++) {
1546                         reg_array_tmp[i] = w83791d_read(client,
1547                                                 W83791D_REG_FAN_CFG[i]);
1548                 }
1549                 data->pwm_enable[0] = (reg_array_tmp[0] >> 2) & 0x03;
1550                 data->pwm_enable[1] = (reg_array_tmp[0] >> 4) & 0x03;
1551                 data->pwm_enable[2] = (reg_array_tmp[1] >> 2) & 0x03;
1552 
1553                 /* Update PWM target temperature */
1554                 for (i = 0; i < 3; i++) {
1555                         data->temp_target[i] = w83791d_read(client,
1556                                 W83791D_REG_TEMP_TARGET[i]) & 0x7f;
1557                 }
1558 
1559                 /* Update PWM temperature tolerance */
1560                 for (i = 0; i < 2; i++) {
1561                         reg_array_tmp[i] = w83791d_read(client,
1562                                         W83791D_REG_TEMP_TOL[i]);
1563                 }
1564                 data->temp_tolerance[0] = reg_array_tmp[0] & 0x0f;
1565                 data->temp_tolerance[1] = (reg_array_tmp[0] >> 4) & 0x0f;
1566                 data->temp_tolerance[2] = reg_array_tmp[1] & 0x0f;
1567 
1568                 /* Update the first temperature sensor */
1569                 for (i = 0; i < 3; i++) {
1570                         data->temp1[i] = w83791d_read(client,
1571                                                 W83791D_REG_TEMP1[i]);
1572                 }
1573 
1574                 /* Update the rest of the temperature sensors */
1575                 for (i = 0; i < 2; i++) {
1576                         for (j = 0; j < 3; j++) {
1577                                 data->temp_add[i][j] =
1578                                         (w83791d_read(client,
1579                                         W83791D_REG_TEMP_ADD[i][j * 2]) << 8) |
1580                                         w83791d_read(client,
1581                                         W83791D_REG_TEMP_ADD[i][j * 2 + 1]);
1582                         }
1583                 }
1584 
1585                 /* Update the realtime status */
1586                 data->alarms =
1587                         w83791d_read(client, W83791D_REG_ALARM1) +
1588                         (w83791d_read(client, W83791D_REG_ALARM2) << 8) +
1589                         (w83791d_read(client, W83791D_REG_ALARM3) << 16);
1590 
1591                 /* Update the beep configuration information */
1592                 data->beep_mask =
1593                         w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) +
1594                         (w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) +
1595                         (w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16);
1596 
1597                 /* Extract global beep enable flag */
1598                 data->beep_enable =
1599                         (data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01;
1600 
1601                 /* Update the cpu voltage information */
1602                 i = w83791d_read(client, W83791D_REG_VID_FANDIV);
1603                 data->vid = i & 0x0f;
1604                 data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01)
1605                                 << 4;
1606 
1607                 data->last_updated = jiffies;
1608                 data->valid = 1;
1609         }
1610 
1611         mutex_unlock(&data->update_lock);
1612 
1613 #ifdef DEBUG
1614         w83791d_print_debug(data, dev);
1615 #endif
1616 
1617         return data;
1618 }
1619 
1620 #ifdef DEBUG
1621 static void w83791d_print_debug(struct w83791d_data *data, struct device *dev)
1622 {
1623         int i = 0, j = 0;
1624 
1625         dev_dbg(dev, "======Start of w83791d debug values======\n");
1626         dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN);
1627         for (i = 0; i < NUMBER_OF_VIN; i++) {
1628                 dev_dbg(dev, "vin[%d] is:     0x%02x\n", i, data->in[i]);
1629                 dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]);
1630                 dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]);
1631         }
1632         dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN);
1633         for (i = 0; i < NUMBER_OF_FANIN; i++) {
1634                 dev_dbg(dev, "fan[%d] is:     0x%02x\n", i, data->fan[i]);
1635                 dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]);
1636                 dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]);
1637         }
1638 
1639         /*
1640          * temperature math is signed, but only print out the
1641          * bits that matter
1642          */
1643         dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN);
1644         for (i = 0; i < 3; i++)
1645                 dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]);
1646         for (i = 0; i < 2; i++) {
1647                 for (j = 0; j < 3; j++) {
1648                         dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j,
1649                                 (u16) data->temp_add[i][j]);
1650                 }
1651         }
1652 
1653         dev_dbg(dev, "Misc Information: ===>\n");
1654         dev_dbg(dev, "alarm is:     0x%08x\n", data->alarms);
1655         dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask);
1656         dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable);
1657         dev_dbg(dev, "vid is: 0x%02x\n", data->vid);
1658         dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm);
1659         dev_dbg(dev, "=======End of w83791d debug values========\n");
1660         dev_dbg(dev, "\n");
1661 }
1662 #endif
1663 
1664 module_i2c_driver(w83791d_driver);
1665 
1666 MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>");
1667 MODULE_DESCRIPTION("W83791D driver");
1668 MODULE_LICENSE("GPL");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/hwmon/w83791d.c

DEFINITIONS
