drivers/hwmon/w83781d.c

   1 /*
   2     w83781d.c - Part of lm_sensors, Linux kernel modules for hardware
   3                 monitoring
   4     Copyright (c) 1998 - 2001  Frodo Looijaard <frodol@dds.nl>,
   5     Philip Edelbrock <phil@netroedge.com>,
   6     and Mark Studebaker <mdsxyz123@yahoo.com>
   7
   8     This program is free software; you can redistribute it and/or modify
   9     it under the terms of the GNU General Public License as published by
  10     the Free Software Foundation; either version 2 of the License, or
  11     (at your option) any later version.
  12
  13     This program is distributed in the hope that it will be useful,
  14     but WITHOUT ANY WARRANTY; without even the implied warranty of
  15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16     GNU General Public License for more details.
  17
  18     You should have received a copy of the GNU General Public License
  19     along with this program; if not, write to the Free Software
  20     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 /*
  24     Supports following chips:
  25
  26     Chip        #vin    #fanin  #pwm    #temp   wchipid vendid  i2c     ISA
  27     as99127f    7       3       0       3       0x31    0x12c3  yes     no
  28     as99127f rev.2 (type_name = as99127f)       0x31    0x5ca3  yes     no
  29     w83781d     7       3       0       3       0x10-1  0x5ca3  yes     yes
  30     w83627hf    9       3       2       3       0x21    0x5ca3  yes     yes(LPC)
  31     w83782d     9       3       2-4     3       0x30    0x5ca3  yes     yes
  32     w83783s     5-6     3       2       1-2     0x40    0x5ca3  yes     no
  33
  34 */
  35
  36 #include <linux/module.h>
  37 #include <linux/init.h>
  38 #include <linux/slab.h>
  39 #include <linux/jiffies.h>
  40 #include <linux/i2c.h>
  41 #include <linux/i2c-isa.h>
  42 #include <linux/hwmon.h>
  43 #include <linux/hwmon-vid.h>
  44 #include <linux/sysfs.h>
  45 #include <linux/err.h>
  46 #include <linux/mutex.h>
  47 #include <asm/io.h>
  48 #include "lm75.h"
  49
  50 /* Addresses to scan */
  51 static unsigned short normal_i2c[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25,
  52                                         0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
  53                                         0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
  54 static unsigned short isa_address = 0x290;
  55
  56 /* Insmod parameters */
  57 I2C_CLIENT_INSMOD_5(w83781d, w83782d, w83783s, w83627hf, as99127f);
  58 I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
  59                     "{bus, clientaddr, subclientaddr1, subclientaddr2}");
  60
  61 static int reset;
  62 module_param(reset, bool, 0);
  63 MODULE_PARM_DESC(reset, "Set to one to reset chip on load");
  64
  65 static int init = 1;
  66 module_param(init, bool, 0);
  67 MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");
  68
  69 /* Constants specified below */
  70
  71 /* Length of ISA address segment */
  72 #define W83781D_EXTENT                  8
  73
  74 /* Where are the ISA address/data registers relative to the base address */
  75 #define W83781D_ADDR_REG_OFFSET         5
  76 #define W83781D_DATA_REG_OFFSET         6
  77
  78 /* The W83781D registers */
  79 /* The W83782D registers for nr=7,8 are in bank 5 */
  80 #define W83781D_REG_IN_MAX(nr)          ((nr < 7) ? (0x2b + (nr) * 2) : \
  81                                                     (0x554 + (((nr) - 7) * 2)))
  82 #define W83781D_REG_IN_MIN(nr)          ((nr < 7) ? (0x2c + (nr) * 2) : \
  83                                                     (0x555 + (((nr) - 7) * 2)))
  84 #define W83781D_REG_IN(nr)              ((nr < 7) ? (0x20 + (nr)) : \
  85                                                     (0x550 + (nr) - 7))
  86
  87 #define W83781D_REG_FAN_MIN(nr)         (0x3a + (nr))
  88 #define W83781D_REG_FAN(nr)             (0x27 + (nr))
  89
  90 #define W83781D_REG_BANK                0x4E
  91 #define W83781D_REG_TEMP2_CONFIG        0x152
  92 #define W83781D_REG_TEMP3_CONFIG        0x252
  93 #define W83781D_REG_TEMP(nr)            ((nr == 3) ? (0x0250) : \
  94                                         ((nr == 2) ? (0x0150) : \
  95                                                      (0x27)))
  96 #define W83781D_REG_TEMP_HYST(nr)       ((nr == 3) ? (0x253) : \
  97                                         ((nr == 2) ? (0x153) : \
  98                                                      (0x3A)))
  99 #define W83781D_REG_TEMP_OVER(nr)       ((nr == 3) ? (0x255) : \
 100                                         ((nr == 2) ? (0x155) : \
 101                                                      (0x39)))
 102
 103 #define W83781D_REG_CONFIG              0x40
 104
 105 /* Interrupt status (W83781D, AS99127F) */
 106 #define W83781D_REG_ALARM1              0x41
 107 #define W83781D_REG_ALARM2              0x42
 108
 109 /* Real-time status (W83782D, W83783S, W83627HF) */
 110 #define W83782D_REG_ALARM1              0x459
 111 #define W83782D_REG_ALARM2              0x45A
 112 #define W83782D_REG_ALARM3              0x45B
 113
 114 #define W83781D_REG_BEEP_CONFIG         0x4D
 115 #define W83781D_REG_BEEP_INTS1          0x56
 116 #define W83781D_REG_BEEP_INTS2          0x57
 117 #define W83781D_REG_BEEP_INTS3          0x453   /* not on W83781D */
 118
 119 #define W83781D_REG_VID_FANDIV          0x47
 120
 121 #define W83781D_REG_CHIPID              0x49
 122 #define W83781D_REG_WCHIPID             0x58
 123 #define W83781D_REG_CHIPMAN             0x4F
 124 #define W83781D_REG_PIN                 0x4B
 125
 126 /* 782D/783S only */
 127 #define W83781D_REG_VBAT                0x5D
 128
 129 /* PWM 782D (1-4) and 783S (1-2) only */
 130 #define W83781D_REG_PWM1                0x5B    /* 782d and 783s/627hf datasheets disagree */
 131                                                 /* on which is which; */
 132 #define W83781D_REG_PWM2                0x5A    /* We follow the 782d convention here, */
 133                                                 /* However 782d is probably wrong. */
 134 #define W83781D_REG_PWM3                0x5E
 135 #define W83781D_REG_PWM4                0x5F
 136 #define W83781D_REG_PWMCLK12            0x5C
 137 #define W83781D_REG_PWMCLK34            0x45C
 138 static const u8 regpwm[] = { W83781D_REG_PWM1, W83781D_REG_PWM2,
 139         W83781D_REG_PWM3, W83781D_REG_PWM4
 140 };
 141
 142 #define W83781D_REG_PWM(nr)             (regpwm[(nr) - 1])
 143
 144 #define W83781D_REG_I2C_ADDR            0x48
 145 #define W83781D_REG_I2C_SUBADDR         0x4A
 146
 147 /* The following are undocumented in the data sheets however we
 148    received the information in an email from Winbond tech support */
 149 /* Sensor selection - not on 781d */
 150 #define W83781D_REG_SCFG1               0x5D
 151 static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 };
 152
 153 #define W83781D_REG_SCFG2               0x59
 154 static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 };
 155
 156 #define W83781D_DEFAULT_BETA            3435
 157
 158 /* RT Table registers */
 159 #define W83781D_REG_RT_IDX              0x50
 160 #define W83781D_REG_RT_VAL              0x51
 161
 162 /* Conversions. Rounding and limit checking is only done on the TO_REG
 163    variants. Note that you should be a bit careful with which arguments
 164    these macros are called: arguments may be evaluated more than once.
 165    Fixing this is just not worth it. */
 166 #define IN_TO_REG(val)                  (SENSORS_LIMIT((((val) * 10 + 8)/16),0,255))
 167 #define IN_FROM_REG(val)                (((val) * 16) / 10)
 168
 169 static inline u8
 170 FAN_TO_REG(long rpm, int div)
 171 {
 172         if (rpm == 0)
 173                 return 255;
 174         rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 175         return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 176 }
 177
 178 #define FAN_FROM_REG(val,div)           ((val) == 0   ? -1 : \
 179                                         ((val) == 255 ? 0 : \
 180                                                         1350000 / ((val) * (div))))
 181
 182 #define TEMP_TO_REG(val)                (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
 183                                                 : (val)) / 1000, 0, 0xff))
 184 #define TEMP_FROM_REG(val)              (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 185
 186 #define PWM_FROM_REG(val)               (val)
 187 #define PWM_TO_REG(val)                 (SENSORS_LIMIT((val),0,255))
 188 #define BEEP_MASK_FROM_REG(val,type)    ((type) == as99127f ? \
 189                                          (val) ^ 0x7fff : (val))
 190 #define BEEP_MASK_TO_REG(val,type)      ((type) == as99127f ? \
 191                                          (~(val)) & 0x7fff : (val) & 0xffffff)
 192
 193 #define BEEP_ENABLE_TO_REG(val)         ((val) ? 1 : 0)
 194 #define BEEP_ENABLE_FROM_REG(val)       ((val) ? 1 : 0)
 195
 196 #define DIV_FROM_REG(val)               (1 << (val))
 197
 198 static inline u8
 199 DIV_TO_REG(long val, enum chips type)
 200 {
 201         int i;
 202         val = SENSORS_LIMIT(val, 1,
 203                             ((type == w83781d
 204                               || type == as99127f) ? 8 : 128)) >> 1;
 205         for (i = 0; i < 7; i++) {
 206                 if (val == 0)
 207                         break;
 208                 val >>= 1;
 209         }
 210         return ((u8) i);
 211 }
 212
 213 /* There are some complications in a module like this. First off, W83781D chips
 214    may be both present on the SMBus and the ISA bus, and we have to handle
 215    those cases separately at some places. Second, there might be several
 216    W83781D chips available (well, actually, that is probably never done; but
 217    it is a clean illustration of how to handle a case like that). Finally,
 218    a specific chip may be attached to *both* ISA and SMBus, and we would
 219    not like to detect it double. Fortunately, in the case of the W83781D at
 220    least, a register tells us what SMBus address we are on, so that helps
 221    a bit - except if there could be more than one SMBus. Groan. No solution
 222    for this yet. */
 223
 224 /* For each registered chip, we need to keep some data in memory.
 225    The structure is dynamically allocated. */
 226 struct w83781d_data {
 227         struct i2c_client client;
 228         struct class_device *class_dev;
 229         struct mutex lock;
 230         enum chips type;
 231
 232         struct mutex update_lock;
 233         char valid;             /* !=0 if following fields are valid */
 234         unsigned long last_updated;     /* In jiffies */
 235
 236         struct i2c_client *lm75[2];     /* for secondary I2C addresses */
 237         /* array of 2 pointers to subclients */
 238
 239         u8 in[9];               /* Register value - 8 & 9 for 782D only */
 240         u8 in_max[9];           /* Register value - 8 & 9 for 782D only */
 241         u8 in_min[9];           /* Register value - 8 & 9 for 782D only */
 242         u8 fan[3];              /* Register value */
 243         u8 fan_min[3];          /* Register value */
 244         u8 temp;
 245         u8 temp_max;            /* Register value */
 246         u8 temp_max_hyst;       /* Register value */
 247         u16 temp_add[2];        /* Register value */
 248         u16 temp_max_add[2];    /* Register value */
 249         u16 temp_max_hyst_add[2];       /* Register value */
 250         u8 fan_div[3];          /* Register encoding, shifted right */
 251         u8 vid;                 /* Register encoding, combined */
 252         u32 alarms;             /* Register encoding, combined */
 253         u32 beep_mask;          /* Register encoding, combined */
 254         u8 beep_enable;         /* Boolean */
 255         u8 pwm[4];              /* Register value */
 256         u8 pwmenable[4];        /* Boolean */
 257         u16 sens[3];            /* 782D/783S only.
 258                                    1 = pentium diode; 2 = 3904 diode;
 259                                    3000-5000 = thermistor beta.
 260                                    Default = 3435.
 261                                    Other Betas unimplemented */
 262         u8 vrm;
 263 };
 264
 265 static int w83781d_attach_adapter(struct i2c_adapter *adapter);
 266 static int w83781d_isa_attach_adapter(struct i2c_adapter *adapter);
 267 static int w83781d_detect(struct i2c_adapter *adapter, int address, int kind);
 268 static int w83781d_detach_client(struct i2c_client *client);
 269
 270 static int w83781d_read_value(struct i2c_client *client, u16 reg);
 271 static int w83781d_write_value(struct i2c_client *client, u16 reg, u16 value);
 272 static struct w83781d_data *w83781d_update_device(struct device *dev);
 273 static void w83781d_init_client(struct i2c_client *client);
 274
 275 static struct i2c_driver w83781d_driver = {
 276         .driver = {
 277                 .name = "w83781d",
 278         },
 279         .id = I2C_DRIVERID_W83781D,
 280         .attach_adapter = w83781d_attach_adapter,
 281         .detach_client = w83781d_detach_client,
 282 };
 283
 284 static struct i2c_driver w83781d_isa_driver = {
 285         .driver = {
 286                 .owner = THIS_MODULE,
 287                 .name = "w83781d-isa",
 288         },
 289         .attach_adapter = w83781d_isa_attach_adapter,
 290         .detach_client = w83781d_detach_client,
 291 };
 292
 293
 294 /* following are the sysfs callback functions */
 295 #define show_in_reg(reg) \
 296 static ssize_t show_##reg (struct device *dev, char *buf, int nr) \
 297 { \
 298         struct w83781d_data *data = w83781d_update_device(dev); \
 299         return sprintf(buf,"%ld\n", (long)IN_FROM_REG(data->reg[nr] * 10)); \
 300 }
 301 show_in_reg(in);
 302 show_in_reg(in_min);
 303 show_in_reg(in_max);
 304
 305 #define store_in_reg(REG, reg) \
 306 static ssize_t store_in_##reg (struct device *dev, const char *buf, size_t count, int nr) \
 307 { \
 308         struct i2c_client *client = to_i2c_client(dev); \
 309         struct w83781d_data *data = i2c_get_clientdata(client); \
 310         u32 val; \
 311          \
 312         val = simple_strtoul(buf, NULL, 10) / 10; \
 313          \
 314         mutex_lock(&data->update_lock); \
 315         data->in_##reg[nr] = IN_TO_REG(val); \
 316         w83781d_write_value(client, W83781D_REG_IN_##REG(nr), data->in_##reg[nr]); \
 317          \
 318         mutex_unlock(&data->update_lock); \
 319         return count; \
 320 }
 321 store_in_reg(MIN, min);
 322 store_in_reg(MAX, max);
 323
 324 #define sysfs_in_offset(offset) \
 325 static ssize_t \
 326 show_regs_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
 327 { \
 328         return show_in(dev, buf, offset); \
 329 } \
 330 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_regs_in_##offset, NULL);
 331
 332 #define sysfs_in_reg_offset(reg, offset) \
 333 static ssize_t show_regs_in_##reg##offset (struct device *dev, struct device_attribute *attr, char *buf) \
 334 { \
 335         return show_in_##reg (dev, buf, offset); \
 336 } \
 337 static ssize_t store_regs_in_##reg##offset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
 338 { \
 339         return store_in_##reg (dev, buf, count, offset); \
 340 } \
 341 static DEVICE_ATTR(in##offset##_##reg, S_IRUGO| S_IWUSR, show_regs_in_##reg##offset, store_regs_in_##reg##offset);
 342
 343 #define sysfs_in_offsets(offset) \
 344 sysfs_in_offset(offset); \
 345 sysfs_in_reg_offset(min, offset); \
 346 sysfs_in_reg_offset(max, offset);
 347
 348 sysfs_in_offsets(0);
 349 sysfs_in_offsets(1);
 350 sysfs_in_offsets(2);
 351 sysfs_in_offsets(3);
 352 sysfs_in_offsets(4);
 353 sysfs_in_offsets(5);
 354 sysfs_in_offsets(6);
 355 sysfs_in_offsets(7);
 356 sysfs_in_offsets(8);
 357
 358 #define show_fan_reg(reg) \
 359 static ssize_t show_##reg (struct device *dev, char *buf, int nr) \
 360 { \
 361         struct w83781d_data *data = w83781d_update_device(dev); \
 362         return sprintf(buf,"%ld\n", \
 363                 FAN_FROM_REG(data->reg[nr-1], (long)DIV_FROM_REG(data->fan_div[nr-1]))); \
 364 }
 365 show_fan_reg(fan);
 366 show_fan_reg(fan_min);
 367
 368 static ssize_t
 369 store_fan_min(struct device *dev, const char *buf, size_t count, int nr)
 370 {
 371         struct i2c_client *client = to_i2c_client(dev);
 372         struct w83781d_data *data = i2c_get_clientdata(client);
 373         u32 val;
 374
 375         val = simple_strtoul(buf, NULL, 10);
 376
 377         mutex_lock(&data->update_lock);
 378         data->fan_min[nr - 1] =
 379             FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr - 1]));
 380         w83781d_write_value(client, W83781D_REG_FAN_MIN(nr),
 381                             data->fan_min[nr - 1]);
 382
 383         mutex_unlock(&data->update_lock);
 384         return count;
 385 }
 386
 387 #define sysfs_fan_offset(offset) \
 388 static ssize_t show_regs_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
 389 { \
 390         return show_fan(dev, buf, offset); \
 391 } \
 392 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_regs_fan_##offset, NULL);
 393
 394 #define sysfs_fan_min_offset(offset) \
 395 static ssize_t show_regs_fan_min##offset (struct device *dev, struct device_attribute *attr, char *buf) \
 396 { \
 397         return show_fan_min(dev, buf, offset); \
 398 } \
 399 static ssize_t store_regs_fan_min##offset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
 400 { \
 401         return store_fan_min(dev, buf, count, offset); \
 402 } \
 403 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, show_regs_fan_min##offset, store_regs_fan_min##offset);
 404
 405 sysfs_fan_offset(1);
 406 sysfs_fan_min_offset(1);
 407 sysfs_fan_offset(2);
 408 sysfs_fan_min_offset(2);
 409 sysfs_fan_offset(3);
 410 sysfs_fan_min_offset(3);
 411
 412 #define show_temp_reg(reg) \
 413 static ssize_t show_##reg (struct device *dev, char *buf, int nr) \
 414 { \
 415         struct w83781d_data *data = w83781d_update_device(dev); \
 416         if (nr >= 2) {  /* TEMP2 and TEMP3 */ \
 417                 return sprintf(buf,"%d\n", \
 418                         LM75_TEMP_FROM_REG(data->reg##_add[nr-2])); \
 419         } else {        /* TEMP1 */ \
 420                 return sprintf(buf,"%ld\n", (long)TEMP_FROM_REG(data->reg)); \
 421         } \
 422 }
 423 show_temp_reg(temp);
 424 show_temp_reg(temp_max);
 425 show_temp_reg(temp_max_hyst);
 426
 427 #define store_temp_reg(REG, reg) \
 428 static ssize_t store_temp_##reg (struct device *dev, const char *buf, size_t count, int nr) \
 429 { \
 430         struct i2c_client *client = to_i2c_client(dev); \
 431         struct w83781d_data *data = i2c_get_clientdata(client); \
 432         s32 val; \
 433          \
 434         val = simple_strtol(buf, NULL, 10); \
 435          \
 436         mutex_lock(&data->update_lock); \
 437          \
 438         if (nr >= 2) {  /* TEMP2 and TEMP3 */ \
 439                 data->temp_##reg##_add[nr-2] = LM75_TEMP_TO_REG(val); \
 440                 w83781d_write_value(client, W83781D_REG_TEMP_##REG(nr), \
 441                                 data->temp_##reg##_add[nr-2]); \
 442         } else {        /* TEMP1 */ \
 443                 data->temp_##reg = TEMP_TO_REG(val); \
 444                 w83781d_write_value(client, W83781D_REG_TEMP_##REG(nr), \
 445                         data->temp_##reg); \
 446         } \
 447          \
 448         mutex_unlock(&data->update_lock); \
 449         return count; \
 450 }
 451 store_temp_reg(OVER, max);
 452 store_temp_reg(HYST, max_hyst);
 453
 454 #define sysfs_temp_offset(offset) \
 455 static ssize_t \
 456 show_regs_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
 457 { \
 458         return show_temp(dev, buf, offset); \
 459 } \
 460 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_regs_temp_##offset, NULL);
 461
 462 #define sysfs_temp_reg_offset(reg, offset) \
 463 static ssize_t show_regs_temp_##reg##offset (struct device *dev, struct device_attribute *attr, char *buf) \
 464 { \
 465         return show_temp_##reg (dev, buf, offset); \
 466 } \
 467 static ssize_t store_regs_temp_##reg##offset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
 468 { \
 469         return store_temp_##reg (dev, buf, count, offset); \
 470 } \
 471 static DEVICE_ATTR(temp##offset##_##reg, S_IRUGO| S_IWUSR, show_regs_temp_##reg##offset, store_regs_temp_##reg##offset);
 472
 473 #define sysfs_temp_offsets(offset) \
 474 sysfs_temp_offset(offset); \
 475 sysfs_temp_reg_offset(max, offset); \
 476 sysfs_temp_reg_offset(max_hyst, offset);
 477
 478 sysfs_temp_offsets(1);
 479 sysfs_temp_offsets(2);
 480 sysfs_temp_offsets(3);
 481
 482 static ssize_t
 483 show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
 484 {
 485         struct w83781d_data *data = w83781d_update_device(dev);
 486         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
 487 }
 488
 489 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
 490
 491 static ssize_t
 492 show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
 493 {
 494         struct w83781d_data *data = w83781d_update_device(dev);
 495         return sprintf(buf, "%ld\n", (long) data->vrm);
 496 }
 497
 498 static ssize_t
 499 store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 500 {
 501         struct i2c_client *client = to_i2c_client(dev);
 502         struct w83781d_data *data = i2c_get_clientdata(client);
 503         u32 val;
 504
 505         val = simple_strtoul(buf, NULL, 10);
 506         data->vrm = val;
 507
 508         return count;
 509 }
 510
 511 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
 512
 513 static ssize_t
 514 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
 515 {
 516         struct w83781d_data *data = w83781d_update_device(dev);
 517         return sprintf(buf, "%u\n", data->alarms);
 518 }
 519
 520 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
 521
 522 static ssize_t show_beep_mask (struct device *dev, struct device_attribute *attr, char *buf)
 523 {
 524         struct w83781d_data *data = w83781d_update_device(dev);
 525         return sprintf(buf, "%ld\n",
 526                        (long)BEEP_MASK_FROM_REG(data->beep_mask, data->type));
 527 }
 528 static ssize_t show_beep_enable (struct device *dev, struct device_attribute *attr, char *buf)
 529 {
 530         struct w83781d_data *data = w83781d_update_device(dev);
 531         return sprintf(buf, "%ld\n",
 532                        (long)BEEP_ENABLE_FROM_REG(data->beep_enable));
 533 }
 534
 535 #define BEEP_ENABLE                     0       /* Store beep_enable */
 536 #define BEEP_MASK                       1       /* Store beep_mask */
 537
 538 static ssize_t
 539 store_beep_reg(struct device *dev, const char *buf, size_t count,
 540                int update_mask)
 541 {
 542         struct i2c_client *client = to_i2c_client(dev);
 543         struct w83781d_data *data = i2c_get_clientdata(client);
 544         u32 val, val2;
 545
 546         val = simple_strtoul(buf, NULL, 10);
 547
 548         mutex_lock(&data->update_lock);
 549
 550         if (update_mask == BEEP_MASK) { /* We are storing beep_mask */
 551                 data->beep_mask = BEEP_MASK_TO_REG(val, data->type);
 552                 w83781d_write_value(client, W83781D_REG_BEEP_INTS1,
 553                                     data->beep_mask & 0xff);
 554
 555                 if ((data->type != w83781d) && (data->type != as99127f)) {
 556                         w83781d_write_value(client, W83781D_REG_BEEP_INTS3,
 557                                             ((data->beep_mask) >> 16) & 0xff);
 558                 }
 559
 560                 val2 = (data->beep_mask >> 8) & 0x7f;
 561         } else {                /* We are storing beep_enable */
 562                 val2 = w83781d_read_value(client, W83781D_REG_BEEP_INTS2) & 0x7f;
 563                 data->beep_enable = BEEP_ENABLE_TO_REG(val);
 564         }
 565
 566         w83781d_write_value(client, W83781D_REG_BEEP_INTS2,
 567                             val2 | data->beep_enable << 7);
 568
 569         mutex_unlock(&data->update_lock);
 570         return count;
 571 }
 572
 573 #define sysfs_beep(REG, reg) \
 574 static ssize_t show_regs_beep_##reg (struct device *dev, struct device_attribute *attr, char *buf) \
 575 { \
 576         return show_beep_##reg(dev, attr, buf); \
 577 } \
 578 static ssize_t store_regs_beep_##reg (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
 579 { \
 580         return store_beep_reg(dev, buf, count, BEEP_##REG); \
 581 } \
 582 static DEVICE_ATTR(beep_##reg, S_IRUGO | S_IWUSR, show_regs_beep_##reg, store_regs_beep_##reg);
 583
 584 sysfs_beep(ENABLE, enable);
 585 sysfs_beep(MASK, mask);
 586
 587 static ssize_t
 588 show_fan_div_reg(struct device *dev, char *buf, int nr)
 589 {
 590         struct w83781d_data *data = w83781d_update_device(dev);
 591         return sprintf(buf, "%ld\n",
 592                        (long) DIV_FROM_REG(data->fan_div[nr - 1]));
 593 }
 594
 595 /* Note: we save and restore the fan minimum here, because its value is
 596    determined in part by the fan divisor.  This follows the principle of
 597    least surprise; the user doesn't expect the fan minimum to change just
 598    because the divisor changed. */
 599 static ssize_t
 600 store_fan_div_reg(struct device *dev, const char *buf, size_t count, int nr)
 601 {
 602         struct i2c_client *client = to_i2c_client(dev);
 603         struct w83781d_data *data = i2c_get_clientdata(client);
 604         unsigned long min;
 605         u8 reg;
 606         unsigned long val = simple_strtoul(buf, NULL, 10);
 607
 608         mutex_lock(&data->update_lock);
 609
 610         /* Save fan_min */
 611         min = FAN_FROM_REG(data->fan_min[nr],
 612                            DIV_FROM_REG(data->fan_div[nr]));
 613
 614         data->fan_div[nr] = DIV_TO_REG(val, data->type);
 615
 616         reg = (w83781d_read_value(client, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV)
 617                & (nr==0 ? 0xcf : 0x3f))
 618             | ((data->fan_div[nr] & 0x03) << (nr==0 ? 4 : 6));
 619         w83781d_write_value(client, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg);
 620
 621         /* w83781d and as99127f don't have extended divisor bits */
 622         if (data->type != w83781d && data->type != as99127f) {
 623                 reg = (w83781d_read_value(client, W83781D_REG_VBAT)
 624                        & ~(1 << (5 + nr)))
 625                     | ((data->fan_div[nr] & 0x04) << (3 + nr));
 626                 w83781d_write_value(client, W83781D_REG_VBAT, reg);
 627         }
 628
 629         /* Restore fan_min */
 630         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 631         w83781d_write_value(client, W83781D_REG_FAN_MIN(nr+1), data->fan_min[nr]);
 632
 633         mutex_unlock(&data->update_lock);
 634         return count;
 635 }
 636
 637 #define sysfs_fan_div(offset) \
 638 static ssize_t show_regs_fan_div_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
 639 { \
 640         return show_fan_div_reg(dev, buf, offset); \
 641 } \
 642 static ssize_t store_regs_fan_div_##offset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
 643 { \
 644         return store_fan_div_reg(dev, buf, count, offset - 1); \
 645 } \
 646 static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, show_regs_fan_div_##offset, store_regs_fan_div_##offset);
 647
 648 sysfs_fan_div(1);
 649 sysfs_fan_div(2);
 650 sysfs_fan_div(3);
 651
 652 static ssize_t
 653 show_pwm_reg(struct device *dev, char *buf, int nr)
 654 {
 655         struct w83781d_data *data = w83781d_update_device(dev);
 656         return sprintf(buf, "%ld\n", (long) PWM_FROM_REG(data->pwm[nr - 1]));
 657 }
 658
 659 static ssize_t
 660 show_pwmenable_reg(struct device *dev, char *buf, int nr)
 661 {
 662         struct w83781d_data *data = w83781d_update_device(dev);
 663         return sprintf(buf, "%ld\n", (long) data->pwmenable[nr - 1]);
 664 }
 665
 666 static ssize_t
 667 store_pwm_reg(struct device *dev, const char *buf, size_t count, int nr)
 668 {
 669         struct i2c_client *client = to_i2c_client(dev);
 670         struct w83781d_data *data = i2c_get_clientdata(client);
 671         u32 val;
 672
 673         val = simple_strtoul(buf, NULL, 10);
 674
 675         mutex_lock(&data->update_lock);
 676         data->pwm[nr - 1] = PWM_TO_REG(val);
 677         w83781d_write_value(client, W83781D_REG_PWM(nr), data->pwm[nr - 1]);
 678         mutex_unlock(&data->update_lock);
 679         return count;
 680 }
 681
 682 static ssize_t
 683 store_pwmenable_reg(struct device *dev, const char *buf, size_t count, int nr)
 684 {
 685         struct i2c_client *client = to_i2c_client(dev);
 686         struct w83781d_data *data = i2c_get_clientdata(client);
 687         u32 val, reg;
 688
 689         val = simple_strtoul(buf, NULL, 10);
 690
 691         mutex_lock(&data->update_lock);
 692
 693         switch (val) {
 694         case 0:
 695         case 1:
 696                 reg = w83781d_read_value(client, W83781D_REG_PWMCLK12);
 697                 w83781d_write_value(client, W83781D_REG_PWMCLK12,
 698                                     (reg & 0xf7) | (val << 3));
 699
 700                 reg = w83781d_read_value(client, W83781D_REG_BEEP_CONFIG);
 701                 w83781d_write_value(client, W83781D_REG_BEEP_CONFIG,
 702                                     (reg & 0xef) | (!val << 4));
 703
 704                 data->pwmenable[nr - 1] = val;
 705                 break;
 706
 707         default:
 708                 mutex_unlock(&data->update_lock);
 709                 return -EINVAL;
 710         }
 711
 712         mutex_unlock(&data->update_lock);
 713         return count;
 714 }
 715
 716 #define sysfs_pwm(offset) \
 717 static ssize_t show_regs_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
 718 { \
 719         return show_pwm_reg(dev, buf, offset); \
 720 } \
 721 static ssize_t store_regs_pwm_##offset (struct device *dev, struct device_attribute *attr, \
 722                 const char *buf, size_t count) \
 723 { \
 724         return store_pwm_reg(dev, buf, count, offset); \
 725 } \
 726 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
 727                 show_regs_pwm_##offset, store_regs_pwm_##offset);
 728
 729 #define sysfs_pwmenable(offset) \
 730 static ssize_t show_regs_pwmenable_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
 731 { \
 732         return show_pwmenable_reg(dev, buf, offset); \
 733 } \
 734 static ssize_t store_regs_pwmenable_##offset (struct device *dev, struct device_attribute *attr, \
 735                 const char *buf, size_t count) \
 736 { \
 737         return store_pwmenable_reg(dev, buf, count, offset); \
 738 } \
 739 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
 740                 show_regs_pwmenable_##offset, store_regs_pwmenable_##offset);
 741
 742 sysfs_pwm(1);
 743 sysfs_pwm(2);
 744 sysfs_pwmenable(2);             /* only PWM2 can be enabled/disabled */
 745 sysfs_pwm(3);
 746 sysfs_pwm(4);
 747
 748 static ssize_t
 749 show_sensor_reg(struct device *dev, char *buf, int nr)
 750 {
 751         struct w83781d_data *data = w83781d_update_device(dev);
 752         return sprintf(buf, "%ld\n", (long) data->sens[nr - 1]);
 753 }
 754
 755 static ssize_t
 756 store_sensor_reg(struct device *dev, const char *buf, size_t count, int nr)
 757 {
 758         struct i2c_client *client = to_i2c_client(dev);
 759         struct w83781d_data *data = i2c_get_clientdata(client);
 760         u32 val, tmp;
 761
 762         val = simple_strtoul(buf, NULL, 10);
 763
 764         mutex_lock(&data->update_lock);
 765
 766         switch (val) {
 767         case 1:         /* PII/Celeron diode */
 768                 tmp = w83781d_read_value(client, W83781D_REG_SCFG1);
 769                 w83781d_write_value(client, W83781D_REG_SCFG1,
 770                                     tmp | BIT_SCFG1[nr - 1]);
 771                 tmp = w83781d_read_value(client, W83781D_REG_SCFG2);
 772                 w83781d_write_value(client, W83781D_REG_SCFG2,
 773                                     tmp | BIT_SCFG2[nr - 1]);
 774                 data->sens[nr - 1] = val;
 775                 break;
 776         case 2:         /* 3904 */
 777                 tmp = w83781d_read_value(client, W83781D_REG_SCFG1);
 778                 w83781d_write_value(client, W83781D_REG_SCFG1,
 779                                     tmp | BIT_SCFG1[nr - 1]);
 780                 tmp = w83781d_read_value(client, W83781D_REG_SCFG2);
 781                 w83781d_write_value(client, W83781D_REG_SCFG2,
 782                                     tmp & ~BIT_SCFG2[nr - 1]);
 783                 data->sens[nr - 1] = val;
 784                 break;
 785         case W83781D_DEFAULT_BETA:      /* thermistor */
 786                 tmp = w83781d_read_value(client, W83781D_REG_SCFG1);
 787                 w83781d_write_value(client, W83781D_REG_SCFG1,
 788                                     tmp & ~BIT_SCFG1[nr - 1]);
 789                 data->sens[nr - 1] = val;
 790                 break;
 791         default:
 792                 dev_err(dev, "Invalid sensor type %ld; must be 1, 2, or %d\n",
 793                        (long) val, W83781D_DEFAULT_BETA);
 794                 break;
 795         }
 796
 797         mutex_unlock(&data->update_lock);
 798         return count;
 799 }
 800
 801 #define sysfs_sensor(offset) \
 802 static ssize_t show_regs_sensor_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
 803 { \
 804     return show_sensor_reg(dev, buf, offset); \
 805 } \
 806 static ssize_t store_regs_sensor_##offset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
 807 { \
 808     return store_sensor_reg(dev, buf, count, offset); \
 809 } \
 810 static DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, show_regs_sensor_##offset, store_regs_sensor_##offset);
 811
 812 sysfs_sensor(1);
 813 sysfs_sensor(2);
 814 sysfs_sensor(3);
 815
 816 /* This function is called when:
 817      * w83781d_driver is inserted (when this module is loaded), for each
 818        available adapter
 819      * when a new adapter is inserted (and w83781d_driver is still present) */
 820 static int
 821 w83781d_attach_adapter(struct i2c_adapter *adapter)
 822 {
 823         if (!(adapter->class & I2C_CLASS_HWMON))
 824                 return 0;
 825         return i2c_probe(adapter, &addr_data, w83781d_detect);
 826 }
 827
 828 static int
 829 w83781d_isa_attach_adapter(struct i2c_adapter *adapter)
 830 {
 831         return w83781d_detect(adapter, isa_address, -1);
 832 }
 833
 834 /* Assumes that adapter is of I2C, not ISA variety.
 835  * OTHERWISE DON'T CALL THIS
 836  */
 837 static int
 838 w83781d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
 839                 struct i2c_client *new_client)
 840 {
 841         int i, val1 = 0, id;
 842         int err;
 843         const char *client_name = "";
 844         struct w83781d_data *data = i2c_get_clientdata(new_client);
 845
 846         data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 847         if (!(data->lm75[0])) {
 848                 err = -ENOMEM;
 849                 goto ERROR_SC_0;
 850         }
 851
 852         id = i2c_adapter_id(adapter);
 853
 854         if (force_subclients[0] == id && force_subclients[1] == address) {
 855                 for (i = 2; i <= 3; i++) {
 856                         if (force_subclients[i] < 0x48 ||
 857                             force_subclients[i] > 0x4f) {
 858                                 dev_err(&new_client->dev, "Invalid subclient "
 859                                         "address %d; must be 0x48-0x4f\n",
 860                                         force_subclients[i]);
 861                                 err = -EINVAL;
 862                                 goto ERROR_SC_1;
 863                         }
 864                 }
 865                 w83781d_write_value(new_client, W83781D_REG_I2C_SUBADDR,
 866                                 (force_subclients[2] & 0x07) |
 867                                 ((force_subclients[3] & 0x07) << 4));
 868                 data->lm75[0]->addr = force_subclients[2];
 869         } else {
 870                 val1 = w83781d_read_value(new_client, W83781D_REG_I2C_SUBADDR);
 871                 data->lm75[0]->addr = 0x48 + (val1 & 0x07);
 872         }
 873
 874         if (kind != w83783s) {
 875                 data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 876                 if (!(data->lm75[1])) {
 877                         err = -ENOMEM;
 878                         goto ERROR_SC_1;
 879                 }
 880
 881                 if (force_subclients[0] == id &&
 882                     force_subclients[1] == address) {
 883                         data->lm75[1]->addr = force_subclients[3];
 884                 } else {
 885                         data->lm75[1]->addr = 0x48 + ((val1 >> 4) & 0x07);
 886                 }
 887                 if (data->lm75[0]->addr == data->lm75[1]->addr) {
 888                         dev_err(&new_client->dev,
 889                                "Duplicate addresses 0x%x for subclients.\n",
 890                                data->lm75[0]->addr);
 891                         err = -EBUSY;
 892                         goto ERROR_SC_2;
 893                 }
 894         }
 895
 896         if (kind == w83781d)
 897                 client_name = "w83781d subclient";
 898         else if (kind == w83782d)
 899                 client_name = "w83782d subclient";
 900         else if (kind == w83783s)
 901                 client_name = "w83783s subclient";
 902         else if (kind == w83627hf)
 903                 client_name = "w83627hf subclient";
 904         else if (kind == as99127f)
 905                 client_name = "as99127f subclient";
 906
 907         for (i = 0; i <= 1; i++) {
 908                 /* store all data in w83781d */
 909                 i2c_set_clientdata(data->lm75[i], NULL);
 910                 data->lm75[i]->adapter = adapter;
 911                 data->lm75[i]->driver = &w83781d_driver;
 912                 data->lm75[i]->flags = 0;
 913                 strlcpy(data->lm75[i]->name, client_name,
 914                         I2C_NAME_SIZE);
 915                 if ((err = i2c_attach_client(data->lm75[i]))) {
 916                         dev_err(&new_client->dev, "Subclient %d "
 917                                 "registration at address 0x%x "
 918                                 "failed.\n", i, data->lm75[i]->addr);
 919                         if (i == 1)
 920                                 goto ERROR_SC_3;
 921                         goto ERROR_SC_2;
 922                 }
 923                 if (kind == w83783s)
 924                         break;
 925         }
 926
 927         return 0;
 928
 929 /* Undo inits in case of errors */
 930 ERROR_SC_3:
 931         i2c_detach_client(data->lm75[0]);
 932 ERROR_SC_2:
 933         kfree(data->lm75[1]);
 934 ERROR_SC_1:
 935         kfree(data->lm75[0]);
 936 ERROR_SC_0:
 937         return err;
 938 }
 939
 940 #define IN_UNIT_ATTRS(X)                        \
 941         &dev_attr_in##X##_input.attr,           \
 942         &dev_attr_in##X##_min.attr,             \
 943         &dev_attr_in##X##_max.attr
 944
 945 #define FAN_UNIT_ATTRS(X)                       \
 946         &dev_attr_fan##X##_input.attr,          \
 947         &dev_attr_fan##X##_min.attr,            \
 948         &dev_attr_fan##X##_div.attr
 949
 950 #define TEMP_UNIT_ATTRS(X)                      \
 951         &dev_attr_temp##X##_input.attr,         \
 952         &dev_attr_temp##X##_max.attr,           \
 953         &dev_attr_temp##X##_max_hyst.attr
 954
 955 static struct attribute* w83781d_attributes[] = {
 956         IN_UNIT_ATTRS(0),
 957         IN_UNIT_ATTRS(2),
 958         IN_UNIT_ATTRS(3),
 959         IN_UNIT_ATTRS(4),
 960         IN_UNIT_ATTRS(5),
 961         IN_UNIT_ATTRS(6),
 962         FAN_UNIT_ATTRS(1),
 963         FAN_UNIT_ATTRS(2),
 964         FAN_UNIT_ATTRS(3),
 965         TEMP_UNIT_ATTRS(1),
 966         TEMP_UNIT_ATTRS(2),
 967         &dev_attr_cpu0_vid.attr,
 968         &dev_attr_vrm.attr,
 969         &dev_attr_alarms.attr,
 970         &dev_attr_beep_mask.attr,
 971         &dev_attr_beep_enable.attr,
 972         NULL
 973 };
 974 static const struct attribute_group w83781d_group = {
 975         .attrs = w83781d_attributes,
 976 };
 977
 978 static struct attribute *w83781d_attributes_opt[] = {
 979         IN_UNIT_ATTRS(1),
 980         IN_UNIT_ATTRS(7),
 981         IN_UNIT_ATTRS(8),
 982         TEMP_UNIT_ATTRS(3),
 983         &dev_attr_pwm1.attr,
 984         &dev_attr_pwm2.attr,
 985         &dev_attr_pwm2_enable.attr,
 986         &dev_attr_pwm3.attr,
 987         &dev_attr_pwm4.attr,
 988         &dev_attr_temp1_type.attr,
 989         &dev_attr_temp2_type.attr,
 990         &dev_attr_temp3_type.attr,
 991         NULL
 992 };
 993 static const struct attribute_group w83781d_group_opt = {
 994         .attrs = w83781d_attributes_opt,
 995 };
 996
 997 static int
 998 w83781d_detect(struct i2c_adapter *adapter, int address, int kind)
 999 {
1000         int i = 0, val1 = 0, val2;
1001         struct i2c_client *client;
1002         struct device *dev;
1003         struct w83781d_data *data;
1004         int err;
1005         const char *client_name = "";
1006         int is_isa = i2c_is_isa_adapter(adapter);
1007         enum vendor { winbond, asus } vendid;
1008
1009         if (!is_isa
1010             && !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1011                 err = -EINVAL;
1012                 goto ERROR0;
1013         }
1014
1015         /* Prevent users from forcing a kind for a bus it isn't supposed
1016            to possibly be on */
1017         if (is_isa && (kind == as99127f || kind == w83783s)) {
1018                 dev_err(&adapter->dev,
1019                         "Cannot force I2C-only chip for ISA address 0x%02x.\n",
1020                         address);
1021                 err = -EINVAL;
1022                 goto ERROR0;
1023         }
1024
1025         if (is_isa)
1026                 if (!request_region(address, W83781D_EXTENT,
1027                                     w83781d_isa_driver.driver.name)) {
1028                         dev_dbg(&adapter->dev, "Request of region "
1029                                 "0x%x-0x%x for w83781d failed\n", address,
1030                                 address + W83781D_EXTENT - 1);
1031                         err = -EBUSY;
1032                         goto ERROR0;
1033                 }
1034
1035         /* Probe whether there is anything available on this address. Already
1036            done for SMBus clients */
1037         if (kind < 0) {
1038                 if (is_isa) {
1039
1040 #define REALLY_SLOW_IO
1041                         /* We need the timeouts for at least some LM78-like
1042                            chips. But only if we read 'undefined' registers. */
1043                         i = inb_p(address + 1);
1044                         if (inb_p(address + 2) != i
1045                          || inb_p(address + 3) != i
1046                          || inb_p(address + 7) != i) {
1047                                 dev_dbg(&adapter->dev, "Detection of w83781d "
1048                                         "chip failed at step 1\n");
1049                                 err = -ENODEV;
1050                                 goto ERROR1;
1051                         }
1052 #undef REALLY_SLOW_IO
1053
1054                         /* Let's just hope nothing breaks here */
1055                         i = inb_p(address + 5) & 0x7f;
1056                         outb_p(~i & 0x7f, address + 5);
1057                         val2 = inb_p(address + 5) & 0x7f;
1058                         if (val2 != (~i & 0x7f)) {
1059                                 outb_p(i, address + 5);
1060                                 dev_dbg(&adapter->dev, "Detection of w83781d "
1061                                         "chip failed at step 2 (0x%x != "
1062                                         "0x%x at 0x%x)\n", val2, ~i & 0x7f,
1063                                         address + 5);
1064                                 err = -ENODEV;
1065                                 goto ERROR1;
1066                         }
1067                 }
1068         }
1069
1070         /* OK. For now, we presume we have a valid client. We now create the
1071            client structure, even though we cannot fill it completely yet.
1072            But it allows us to access w83781d_{read,write}_value. */
1073
1074         if (!(data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL))) {
1075                 err = -ENOMEM;
1076                 goto ERROR1;
1077         }
1078
1079         client = &data->client;
1080         i2c_set_clientdata(client, data);
1081         client->addr = address;
1082         mutex_init(&data->lock);
1083         client->adapter = adapter;
1084         client->driver = is_isa ? &w83781d_isa_driver : &w83781d_driver;
1085         client->flags = 0;
1086         dev = &client->dev;
1087
1088         /* Now, we do the remaining detection. */
1089
1090         /* The w8378?d may be stuck in some other bank than bank 0. This may
1091            make reading other information impossible. Specify a force=... or
1092            force_*=... parameter, and the Winbond will be reset to the right
1093            bank. */
1094         if (kind < 0) {
1095                 if (w83781d_read_value(client, W83781D_REG_CONFIG) & 0x80) {
1096                         dev_dbg(&adapter->dev, "Detection of w83781d chip "
1097                                 "failed at step 3\n");
1098                         err = -ENODEV;
1099                         goto ERROR2;
1100                 }
1101                 val1 = w83781d_read_value(client, W83781D_REG_BANK);
1102                 val2 = w83781d_read_value(client, W83781D_REG_CHIPMAN);
1103                 /* Check for Winbond or Asus ID if in bank 0 */
1104                 if ((!(val1 & 0x07)) &&
1105                     (((!(val1 & 0x80)) && (val2 != 0xa3) && (val2 != 0xc3))
1106                      || ((val1 & 0x80) && (val2 != 0x5c) && (val2 != 0x12)))) {
1107                         dev_dbg(&adapter->dev, "Detection of w83781d chip "
1108                                 "failed at step 4\n");
1109                         err = -ENODEV;
1110                         goto ERROR2;
1111                 }
1112                 /* If Winbond SMBus, check address at 0x48.
1113                    Asus doesn't support, except for as99127f rev.2 */
1114                 if ((!is_isa) && (((!(val1 & 0x80)) && (val2 == 0xa3)) ||
1115                                   ((val1 & 0x80) && (val2 == 0x5c)))) {
1116                         if (w83781d_read_value
1117                             (client, W83781D_REG_I2C_ADDR) != address) {
1118                                 dev_dbg(&adapter->dev, "Detection of w83781d "
1119                                         "chip failed at step 5\n");
1120                                 err = -ENODEV;
1121                                 goto ERROR2;
1122                         }
1123                 }
1124         }
1125
1126         /* We have either had a force parameter, or we have already detected the
1127            Winbond. Put it now into bank 0 and Vendor ID High Byte */
1128         w83781d_write_value(client, W83781D_REG_BANK,
1129                             (w83781d_read_value(client, W83781D_REG_BANK)
1130                              & 0x78) | 0x80);
1131
1132         /* Determine the chip type. */
1133         if (kind <= 0) {
1134                 /* get vendor ID */
1135                 val2 = w83781d_read_value(client, W83781D_REG_CHIPMAN);
1136                 if (val2 == 0x5c)
1137                         vendid = winbond;
1138                 else if (val2 == 0x12)
1139                         vendid = asus;
1140                 else {
1141                         dev_dbg(&adapter->dev, "w83781d chip vendor is "
1142                                 "neither Winbond nor Asus\n");
1143                         err = -ENODEV;
1144                         goto ERROR2;
1145                 }
1146
1147                 val1 = w83781d_read_value(client, W83781D_REG_WCHIPID);
1148                 if ((val1 == 0x10 || val1 == 0x11) && vendid == winbond)
1149                         kind = w83781d;
1150                 else if (val1 == 0x30 && vendid == winbond)
1151                         kind = w83782d;
1152                 else if (val1 == 0x40 && vendid == winbond && !is_isa
1153                                 && address == 0x2d)
1154                         kind = w83783s;
1155                 else if (val1 == 0x21 && vendid == winbond)
1156                         kind = w83627hf;
1157                 else if (val1 == 0x31 && !is_isa && address >= 0x28)
1158                         kind = as99127f;
1159                 else {
1160                         if (kind == 0)
1161                                 dev_warn(&adapter->dev, "Ignoring 'force' "
1162                                          "parameter for unknown chip at "
1163                                          "address 0x%02x\n", address);
1164                         err = -EINVAL;
1165                         goto ERROR2;
1166                 }
1167         }
1168
1169         if (kind == w83781d) {
1170                 client_name = "w83781d";
1171         } else if (kind == w83782d) {
1172                 client_name = "w83782d";
1173         } else if (kind == w83783s) {
1174                 client_name = "w83783s";
1175         } else if (kind == w83627hf) {
1176                 client_name = "w83627hf";
1177         } else if (kind == as99127f) {
1178                 client_name = "as99127f";
1179         }
1180
1181         /* Fill in the remaining client fields and put into the global list */
1182         strlcpy(client->name, client_name, I2C_NAME_SIZE);
1183         data->type = kind;
1184
1185         data->valid = 0;
1186         mutex_init(&data->update_lock);
1187
1188         /* Tell the I2C layer a new client has arrived */
1189         if ((err = i2c_attach_client(client)))
1190                 goto ERROR2;
1191
1192         /* attach secondary i2c lm75-like clients */
1193         if (!is_isa) {
1194                 if ((err = w83781d_detect_subclients(adapter, address,
1195                                 kind, client)))
1196                         goto ERROR3;
1197         } else {
1198                 data->lm75[0] = NULL;
1199                 data->lm75[1] = NULL;
1200         }
1201
1202         /* Initialize the chip */
1203         w83781d_init_client(client);
1204
1205         /* A few vars need to be filled upon startup */
1206         for (i = 1; i <= 3; i++) {
1207                 data->fan_min[i - 1] = w83781d_read_value(client,
1208                                         W83781D_REG_FAN_MIN(i));
1209         }
1210         if (kind != w83781d && kind != as99127f)
1211                 for (i = 0; i < 4; i++)
1212                         data->pwmenable[i] = 1;
1213
1214         /* Register sysfs hooks */
1215         if ((err = sysfs_create_group(&dev->kobj, &w83781d_group)))
1216                 goto ERROR4;
1217
1218         if (kind != w83783s) {
1219                 if ((err = device_create_file(dev, &dev_attr_in1_input))
1220                     || (err = device_create_file(dev, &dev_attr_in1_min))
1221                     || (err = device_create_file(dev, &dev_attr_in1_max)))
1222                         goto ERROR4;
1223         }
1224         if (kind != as99127f && kind != w83781d && kind != w83783s) {
1225                 if ((err = device_create_file(dev, &dev_attr_in7_input))
1226                     || (err = device_create_file(dev, &dev_attr_in7_min))
1227                     || (err = device_create_file(dev, &dev_attr_in7_max))
1228                     || (err = device_create_file(dev, &dev_attr_in8_input))
1229                     || (err = device_create_file(dev, &dev_attr_in8_min))
1230                     || (err = device_create_file(dev, &dev_attr_in8_max)))
1231                         goto ERROR4;
1232         }
1233         if (kind != w83783s) {
1234                 if ((err = device_create_file(dev, &dev_attr_temp3_input))
1235                     || (err = device_create_file(dev, &dev_attr_temp3_max))
1236                     || (err = device_create_file(dev,
1237                                                  &dev_attr_temp3_max_hyst)))
1238                         goto ERROR4;
1239         }
1240
1241         if (kind != w83781d && kind != as99127f) {
1242                 if ((err = device_create_file(dev, &dev_attr_pwm1))
1243                     || (err = device_create_file(dev, &dev_attr_pwm2))
1244                     || (err = device_create_file(dev, &dev_attr_pwm2_enable)))
1245                         goto ERROR4;
1246         }
1247         if (kind == w83782d && !is_isa) {
1248                 if ((err = device_create_file(dev, &dev_attr_pwm3))
1249                     || (err = device_create_file(dev, &dev_attr_pwm4)))
1250                         goto ERROR4;
1251         }
1252
1253         if (kind != as99127f && kind != w83781d) {
1254                 if ((err = device_create_file(dev, &dev_attr_temp1_type))
1255                     || (err = device_create_file(dev,
1256                                                  &dev_attr_temp2_type)))
1257                         goto ERROR4;
1258                 if (kind != w83783s) {
1259                         if ((err = device_create_file(dev,
1260                                                       &dev_attr_temp3_type)))
1261                                 goto ERROR4;
1262                 }
1263         }
1264
1265         data->class_dev = hwmon_device_register(dev);
1266         if (IS_ERR(data->class_dev)) {
1267                 err = PTR_ERR(data->class_dev);
1268                 goto ERROR4;
1269         }
1270
1271         return 0;
1272
1273 ERROR4:
1274         sysfs_remove_group(&dev->kobj, &w83781d_group);
1275         sysfs_remove_group(&dev->kobj, &w83781d_group_opt);
1276
1277         if (data->lm75[1]) {
1278                 i2c_detach_client(data->lm75[1]);
1279                 kfree(data->lm75[1]);
1280         }
1281         if (data->lm75[0]) {
1282                 i2c_detach_client(data->lm75[0]);
1283                 kfree(data->lm75[0]);
1284         }
1285 ERROR3:
1286         i2c_detach_client(client);
1287 ERROR2:
1288         kfree(data);
1289 ERROR1:
1290         if (is_isa)
1291                 release_region(address, W83781D_EXTENT);
1292 ERROR0:
1293         return err;
1294 }
1295
1296 static int
1297 w83781d_detach_client(struct i2c_client *client)
1298 {
1299         struct w83781d_data *data = i2c_get_clientdata(client);
1300         int err;
1301
1302         /* main client */
1303         if (data) {
1304                 hwmon_device_unregister(data->class_dev);
1305                 sysfs_remove_group(&client->dev.kobj, &w83781d_group);
1306                 sysfs_remove_group(&client->dev.kobj, &w83781d_group_opt);
1307         }
1308         if (i2c_is_isa_client(client))
1309                 release_region(client->addr, W83781D_EXTENT);
1310
1311         if ((err = i2c_detach_client(client)))
1312                 return err;
1313
1314         /* main client */
1315         if (data)
1316                 kfree(data);
1317
1318         /* subclient */
1319         else
1320                 kfree(client);
1321
1322         return 0;
1323 }
1324
1325 /* The SMBus locks itself, usually, but nothing may access the Winbond between
1326    bank switches. ISA access must always be locked explicitly!
1327    We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks,
1328    would slow down the W83781D access and should not be necessary.
1329    There are some ugly typecasts here, but the good news is - they should
1330    nowhere else be necessary! */
1331 static int
1332 w83781d_read_value(struct i2c_client *client, u16 reg)
1333 {
1334         struct w83781d_data *data = i2c_get_clientdata(client);
1335         int res, word_sized, bank;
1336         struct i2c_client *cl;
1337
1338         mutex_lock(&data->lock);
1339         if (i2c_is_isa_client(client)) {
1340                 word_sized = (((reg & 0xff00) == 0x100)
1341                               || ((reg & 0xff00) == 0x200))
1342                     && (((reg & 0x00ff) == 0x50)
1343                         || ((reg & 0x00ff) == 0x53)
1344                         || ((reg & 0x00ff) == 0x55));
1345                 if (reg & 0xff00) {
1346                         outb_p(W83781D_REG_BANK,
1347                                client->addr + W83781D_ADDR_REG_OFFSET);
1348                         outb_p(reg >> 8,
1349                                client->addr + W83781D_DATA_REG_OFFSET);
1350                 }
1351                 outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
1352                 res = inb_p(client->addr + W83781D_DATA_REG_OFFSET);
1353                 if (word_sized) {
1354                         outb_p((reg & 0xff) + 1,
1355                                client->addr + W83781D_ADDR_REG_OFFSET);
1356                         res =
1357                             (res << 8) + inb_p(client->addr +
1358                                                W83781D_DATA_REG_OFFSET);
1359                 }
1360                 if (reg & 0xff00) {
1361                         outb_p(W83781D_REG_BANK,
1362                                client->addr + W83781D_ADDR_REG_OFFSET);
1363                         outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
1364                 }
1365         } else {
1366                 bank = (reg >> 8) & 0x0f;
1367                 if (bank > 2)
1368                         /* switch banks */
1369                         i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1370                                                   bank);
1371                 if (bank == 0 || bank > 2) {
1372                         res = i2c_smbus_read_byte_data(client, reg & 0xff);
1373                 } else {
1374                         /* switch to subclient */
1375                         cl = data->lm75[bank - 1];
1376                         /* convert from ISA to LM75 I2C addresses */
1377                         switch (reg & 0xff) {
1378                         case 0x50:      /* TEMP */
1379                                 res = swab16(i2c_smbus_read_word_data(cl, 0));
1380                                 break;
1381                         case 0x52:      /* CONFIG */
1382                                 res = i2c_smbus_read_byte_data(cl, 1);
1383                                 break;
1384                         case 0x53:      /* HYST */
1385                                 res = swab16(i2c_smbus_read_word_data(cl, 2));
1386                                 break;
1387                         case 0x55:      /* OVER */
1388                         default:
1389                                 res = swab16(i2c_smbus_read_word_data(cl, 3));
1390                                 break;
1391                         }
1392                 }
1393                 if (bank > 2)
1394                         i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1395         }
1396         mutex_unlock(&data->lock);
1397         return res;
1398 }
1399
1400 static int
1401 w83781d_write_value(struct i2c_client *client, u16 reg, u16 value)
1402 {
1403         struct w83781d_data *data = i2c_get_clientdata(client);
1404         int word_sized, bank;
1405         struct i2c_client *cl;
1406
1407         mutex_lock(&data->lock);
1408         if (i2c_is_isa_client(client)) {
1409                 word_sized = (((reg & 0xff00) == 0x100)
1410                               || ((reg & 0xff00) == 0x200))
1411                     && (((reg & 0x00ff) == 0x53)
1412                         || ((reg & 0x00ff) == 0x55));
1413                 if (reg & 0xff00) {
1414                         outb_p(W83781D_REG_BANK,
1415                                client->addr + W83781D_ADDR_REG_OFFSET);
1416                         outb_p(reg >> 8,
1417                                client->addr + W83781D_DATA_REG_OFFSET);
1418                 }
1419                 outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
1420                 if (word_sized) {
1421                         outb_p(value >> 8,
1422                                client->addr + W83781D_DATA_REG_OFFSET);
1423                         outb_p((reg & 0xff) + 1,
1424                                client->addr + W83781D_ADDR_REG_OFFSET);
1425                 }
1426                 outb_p(value & 0xff, client->addr + W83781D_DATA_REG_OFFSET);
1427                 if (reg & 0xff00) {
1428                         outb_p(W83781D_REG_BANK,
1429                                client->addr + W83781D_ADDR_REG_OFFSET);
1430                         outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
1431                 }
1432         } else {
1433                 bank = (reg >> 8) & 0x0f;
1434                 if (bank > 2)
1435                         /* switch banks */
1436                         i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1437                                                   bank);
1438                 if (bank == 0 || bank > 2) {
1439                         i2c_smbus_write_byte_data(client, reg & 0xff,
1440                                                   value & 0xff);
1441                 } else {
1442                         /* switch to subclient */
1443                         cl = data->lm75[bank - 1];
1444                         /* convert from ISA to LM75 I2C addresses */
1445                         switch (reg & 0xff) {
1446                         case 0x52:      /* CONFIG */
1447                                 i2c_smbus_write_byte_data(cl, 1, value & 0xff);
1448                                 break;
1449                         case 0x53:      /* HYST */
1450                                 i2c_smbus_write_word_data(cl, 2, swab16(value));
1451                                 break;
1452                         case 0x55:      /* OVER */
1453                                 i2c_smbus_write_word_data(cl, 3, swab16(value));
1454                                 break;
1455                         }
1456                 }
1457                 if (bank > 2)
1458                         i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1459         }
1460         mutex_unlock(&data->lock);
1461         return 0;
1462 }
1463
1464 static void
1465 w83781d_init_client(struct i2c_client *client)
1466 {
1467         struct w83781d_data *data = i2c_get_clientdata(client);
1468         int i, p;
1469         int type = data->type;
1470         u8 tmp;
1471
1472         if (reset && type != as99127f) { /* this resets registers we don't have
1473                                            documentation for on the as99127f */
1474                 /* Resetting the chip has been the default for a long time,
1475                    but it causes the BIOS initializations (fan clock dividers,
1476                    thermal sensor types...) to be lost, so it is now optional.
1477                    It might even go away if nobody reports it as being useful,
1478                    as I see very little reason why this would be needed at
1479                    all. */
1480                 dev_info(&client->dev, "If reset=1 solved a problem you were "
1481                          "having, please report!\n");
1482
1483                 /* save these registers */
1484                 i = w83781d_read_value(client, W83781D_REG_BEEP_CONFIG);
1485                 p = w83781d_read_value(client, W83781D_REG_PWMCLK12);
1486                 /* Reset all except Watchdog values and last conversion values
1487                    This sets fan-divs to 2, among others */
1488                 w83781d_write_value(client, W83781D_REG_CONFIG, 0x80);
1489                 /* Restore the registers and disable power-on abnormal beep.
1490                    This saves FAN 1/2/3 input/output values set by BIOS. */
1491                 w83781d_write_value(client, W83781D_REG_BEEP_CONFIG, i | 0x80);
1492                 w83781d_write_value(client, W83781D_REG_PWMCLK12, p);
1493                 /* Disable master beep-enable (reset turns it on).
1494                    Individual beep_mask should be reset to off but for some reason
1495                    disabling this bit helps some people not get beeped */
1496                 w83781d_write_value(client, W83781D_REG_BEEP_INTS2, 0);
1497         }
1498
1499         /* Disable power-on abnormal beep, as advised by the datasheet.
1500            Already done if reset=1. */
1501         if (init && !reset && type != as99127f) {
1502                 i = w83781d_read_value(client, W83781D_REG_BEEP_CONFIG);
1503                 w83781d_write_value(client, W83781D_REG_BEEP_CONFIG, i | 0x80);
1504         }
1505
1506         data->vrm = vid_which_vrm();
1507
1508         if ((type != w83781d) && (type != as99127f)) {
1509                 tmp = w83781d_read_value(client, W83781D_REG_SCFG1);
1510                 for (i = 1; i <= 3; i++) {
1511                         if (!(tmp & BIT_SCFG1[i - 1])) {
1512                                 data->sens[i - 1] = W83781D_DEFAULT_BETA;
1513                         } else {
1514                                 if (w83781d_read_value
1515                                     (client,
1516                                      W83781D_REG_SCFG2) & BIT_SCFG2[i - 1])
1517                                         data->sens[i - 1] = 1;
1518                                 else
1519                                         data->sens[i - 1] = 2;
1520                         }
1521                         if (type == w83783s && i == 2)
1522                                 break;
1523                 }
1524         }
1525
1526         if (init && type != as99127f) {
1527                 /* Enable temp2 */
1528                 tmp = w83781d_read_value(client, W83781D_REG_TEMP2_CONFIG);
1529                 if (tmp & 0x01) {
1530                         dev_warn(&client->dev, "Enabling temp2, readings "
1531                                  "might not make sense\n");
1532                         w83781d_write_value(client, W83781D_REG_TEMP2_CONFIG,
1533                                 tmp & 0xfe);
1534                 }
1535
1536                 /* Enable temp3 */
1537                 if (type != w83783s) {
1538                         tmp = w83781d_read_value(client,
1539                                 W83781D_REG_TEMP3_CONFIG);
1540                         if (tmp & 0x01) {
1541                                 dev_warn(&client->dev, "Enabling temp3, "
1542                                          "readings might not make sense\n");
1543                                 w83781d_write_value(client,
1544                                         W83781D_REG_TEMP3_CONFIG, tmp & 0xfe);
1545                         }
1546                 }
1547         }
1548
1549         /* Start monitoring */
1550         w83781d_write_value(client, W83781D_REG_CONFIG,
1551                             (w83781d_read_value(client,
1552                                                 W83781D_REG_CONFIG) & 0xf7)
1553                             | 0x01);
1554 }
1555
1556 static struct w83781d_data *w83781d_update_device(struct device *dev)
1557 {
1558         struct i2c_client *client = to_i2c_client(dev);
1559         struct w83781d_data *data = i2c_get_clientdata(client);
1560         int i;
1561
1562         mutex_lock(&data->update_lock);
1563
1564         if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1565             || !data->valid) {
1566                 dev_dbg(dev, "Starting device update\n");
1567
1568                 for (i = 0; i <= 8; i++) {
1569                         if (data->type == w83783s && i == 1)
1570                                 continue;       /* 783S has no in1 */
1571                         data->in[i] =
1572                             w83781d_read_value(client, W83781D_REG_IN(i));
1573                         data->in_min[i] =
1574                             w83781d_read_value(client, W83781D_REG_IN_MIN(i));
1575                         data->in_max[i] =
1576                             w83781d_read_value(client, W83781D_REG_IN_MAX(i));
1577                         if ((data->type != w83782d)
1578                             && (data->type != w83627hf) && (i == 6))
1579                                 break;
1580                 }
1581                 for (i = 1; i <= 3; i++) {
1582                         data->fan[i - 1] =
1583                             w83781d_read_value(client, W83781D_REG_FAN(i));
1584                         data->fan_min[i - 1] =
1585                             w83781d_read_value(client, W83781D_REG_FAN_MIN(i));
1586                 }
1587                 if (data->type != w83781d && data->type != as99127f) {
1588                         for (i = 1; i <= 4; i++) {
1589                                 data->pwm[i - 1] =
1590                                     w83781d_read_value(client,
1591                                                        W83781D_REG_PWM(i));
1592                                 if ((data->type != w83782d
1593                                      || i2c_is_isa_client(client))
1594                                     && i == 2)
1595                                         break;
1596                         }
1597                         /* Only PWM2 can be disabled */
1598                         data->pwmenable[1] = (w83781d_read_value(client,
1599                                               W83781D_REG_PWMCLK12) & 0x08) >> 3;
1600                 }
1601
1602                 data->temp = w83781d_read_value(client, W83781D_REG_TEMP(1));
1603                 data->temp_max =
1604                     w83781d_read_value(client, W83781D_REG_TEMP_OVER(1));
1605                 data->temp_max_hyst =
1606                     w83781d_read_value(client, W83781D_REG_TEMP_HYST(1));
1607                 data->temp_add[0] =
1608                     w83781d_read_value(client, W83781D_REG_TEMP(2));
1609                 data->temp_max_add[0] =
1610                     w83781d_read_value(client, W83781D_REG_TEMP_OVER(2));
1611                 data->temp_max_hyst_add[0] =
1612                     w83781d_read_value(client, W83781D_REG_TEMP_HYST(2));
1613                 if (data->type != w83783s) {
1614                         data->temp_add[1] =
1615                             w83781d_read_value(client, W83781D_REG_TEMP(3));
1616                         data->temp_max_add[1] =
1617                             w83781d_read_value(client,
1618                                                W83781D_REG_TEMP_OVER(3));
1619                         data->temp_max_hyst_add[1] =
1620                             w83781d_read_value(client,
1621                                                W83781D_REG_TEMP_HYST(3));
1622                 }
1623                 i = w83781d_read_value(client, W83781D_REG_VID_FANDIV);
1624                 data->vid = i & 0x0f;
1625                 data->vid |= (w83781d_read_value(client,
1626                                         W83781D_REG_CHIPID) & 0x01) << 4;
1627                 data->fan_div[0] = (i >> 4) & 0x03;
1628                 data->fan_div[1] = (i >> 6) & 0x03;
1629                 data->fan_div[2] = (w83781d_read_value(client,
1630                                         W83781D_REG_PIN) >> 6) & 0x03;
1631                 if ((data->type != w83781d) && (data->type != as99127f)) {
1632                         i = w83781d_read_value(client, W83781D_REG_VBAT);
1633                         data->fan_div[0] |= (i >> 3) & 0x04;
1634                         data->fan_div[1] |= (i >> 4) & 0x04;
1635                         data->fan_div[2] |= (i >> 5) & 0x04;
1636                 }
1637                 if ((data->type == w83782d) || (data->type == w83627hf)) {
1638                         data->alarms = w83781d_read_value(client,
1639                                                 W83782D_REG_ALARM1)
1640                                      | (w83781d_read_value(client,
1641                                                 W83782D_REG_ALARM2) << 8)
1642                                      | (w83781d_read_value(client,
1643                                                 W83782D_REG_ALARM3) << 16);
1644                 } else if (data->type == w83783s) {
1645                         data->alarms = w83781d_read_value(client,
1646                                                 W83782D_REG_ALARM1)
1647                                      | (w83781d_read_value(client,
1648                                                 W83782D_REG_ALARM2) << 8);
1649                 } else {
1650                         /* No real-time status registers, fall back to
1651                            interrupt status registers */
1652                         data->alarms = w83781d_read_value(client,
1653                                                 W83781D_REG_ALARM1)
1654                                      | (w83781d_read_value(client,
1655                                                 W83781D_REG_ALARM2) << 8);
1656                 }
1657                 i = w83781d_read_value(client, W83781D_REG_BEEP_INTS2);
1658                 data->beep_enable = i >> 7;
1659                 data->beep_mask = ((i & 0x7f) << 8) +
1660                     w83781d_read_value(client, W83781D_REG_BEEP_INTS1);
1661                 if ((data->type != w83781d) && (data->type != as99127f)) {
1662                         data->beep_mask |=
1663                             w83781d_read_value(client,
1664                                                W83781D_REG_BEEP_INTS3) << 16;
1665                 }
1666                 data->last_updated = jiffies;
1667                 data->valid = 1;
1668         }
1669
1670         mutex_unlock(&data->update_lock);
1671
1672         return data;
1673 }
1674
1675 static int __init
1676 sensors_w83781d_init(void)
1677 {
1678         int res;
1679
1680         res = i2c_add_driver(&w83781d_driver);
1681         if (res)
1682                 return res;
1683
1684         /* Don't exit if this one fails, we still want the I2C variants
1685            to work! */
1686         if (i2c_isa_add_driver(&w83781d_isa_driver))
1687                 isa_address = 0;
1688
1689         return 0;
1690 }
1691
1692 static void __exit
1693 sensors_w83781d_exit(void)
1694 {
1695         if (isa_address)
1696                 i2c_isa_del_driver(&w83781d_isa_driver);
1697         i2c_del_driver(&w83781d_driver);
1698 }
1699
1700 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
1701               "Philip Edelbrock <phil@netroedge.com>, "
1702               "and Mark Studebaker <mdsxyz123@yahoo.com>");
1703 MODULE_DESCRIPTION("W83781D driver");
1704 MODULE_LICENSE("GPL");
1705
1706 module_init(sensors_w83781d_init);
1707 module_exit(sensors_w83781d_exit);