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     Copyright (c) 2007         Jean Delvare <khali@linux-fr.org>
   8
   9     This program is free software; you can redistribute it and/or modify
  10     it under the terms of the GNU General Public License as published by
  11     the Free Software Foundation; either version 2 of the License, or
  12     (at your option) any later version.
  13
  14     This program is distributed in the hope that it will be useful,
  15     but WITHOUT ANY WARRANTY; without even the implied warranty of
  16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17     GNU General Public License for more details.
  18
  19     You should have received a copy of the GNU General Public License
  20     along with this program; if not, write to the Free Software
  21     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 /*
  25     Supports following chips:
  26
  27     Chip        #vin    #fanin  #pwm    #temp   wchipid vendid  i2c     ISA
  28     as99127f    7       3       0       3       0x31    0x12c3  yes     no
  29     as99127f rev.2 (type_name = as99127f)       0x31    0x5ca3  yes     no
  30     w83781d     7       3       0       3       0x10-1  0x5ca3  yes     yes
  31     w83627hf    9       3       2       3       0x21    0x5ca3  yes     yes(LPC)
  32     w83782d     9       3       2-4     3       0x30    0x5ca3  yes     yes
  33     w83783s     5-6     3       2       1-2     0x40    0x5ca3  yes     no
  34
  35 */
  36
  37 #include <linux/module.h>
  38 #include <linux/init.h>
  39 #include <linux/slab.h>
  40 #include <linux/jiffies.h>
  41 #include <linux/i2c.h>
  42 #include <linux/platform_device.h>
  43 #include <linux/ioport.h>
  44 #include <linux/hwmon.h>
  45 #include <linux/hwmon-vid.h>
  46 #include <linux/hwmon-sysfs.h>
  47 #include <linux/sysfs.h>
  48 #include <linux/err.h>
  49 #include <linux/mutex.h>
  50 #include <asm/io.h>
  51 #include "lm75.h"
  52
  53 /* ISA device, if found */
  54 static struct platform_device *pdev;
  55
  56 /* Addresses to scan */
  57 static unsigned short normal_i2c[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25,
  58                                         0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
  59                                         0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
  60 static unsigned short isa_address = 0x290;
  61
  62 /* Insmod parameters */
  63 I2C_CLIENT_INSMOD_5(w83781d, w83782d, w83783s, w83627hf, as99127f);
  64 I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
  65                     "{bus, clientaddr, subclientaddr1, subclientaddr2}");
  66
  67 static int reset;
  68 module_param(reset, bool, 0);
  69 MODULE_PARM_DESC(reset, "Set to one to reset chip on load");
  70
  71 static int init = 1;
  72 module_param(init, bool, 0);
  73 MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");
  74
  75 /* Constants specified below */
  76
  77 /* Length of ISA address segment */
  78 #define W83781D_EXTENT                  8
  79
  80 /* Where are the ISA address/data registers relative to the base address */
  81 #define W83781D_ADDR_REG_OFFSET         5
  82 #define W83781D_DATA_REG_OFFSET         6
  83
  84 /* The device registers */
  85 /* in nr from 0 to 8 */
  86 #define W83781D_REG_IN_MAX(nr)          ((nr < 7) ? (0x2b + (nr) * 2) : \
  87                                                     (0x554 + (((nr) - 7) * 2)))
  88 #define W83781D_REG_IN_MIN(nr)          ((nr < 7) ? (0x2c + (nr) * 2) : \
  89                                                     (0x555 + (((nr) - 7) * 2)))
  90 #define W83781D_REG_IN(nr)              ((nr < 7) ? (0x20 + (nr)) : \
  91                                                     (0x550 + (nr) - 7))
  92
  93 /* fan nr from 0 to 2 */
  94 #define W83781D_REG_FAN_MIN(nr)         (0x3b + (nr))
  95 #define W83781D_REG_FAN(nr)             (0x28 + (nr))
  96
  97 #define W83781D_REG_BANK                0x4E
  98 #define W83781D_REG_TEMP2_CONFIG        0x152
  99 #define W83781D_REG_TEMP3_CONFIG        0x252
 100 /* temp nr from 1 to 3 */
 101 #define W83781D_REG_TEMP(nr)            ((nr == 3) ? (0x0250) : \
 102                                         ((nr == 2) ? (0x0150) : \
 103                                                      (0x27)))
 104 #define W83781D_REG_TEMP_HYST(nr)       ((nr == 3) ? (0x253) : \
 105                                         ((nr == 2) ? (0x153) : \
 106                                                      (0x3A)))
 107 #define W83781D_REG_TEMP_OVER(nr)       ((nr == 3) ? (0x255) : \
 108                                         ((nr == 2) ? (0x155) : \
 109                                                      (0x39)))
 110
 111 #define W83781D_REG_CONFIG              0x40
 112
 113 /* Interrupt status (W83781D, AS99127F) */
 114 #define W83781D_REG_ALARM1              0x41
 115 #define W83781D_REG_ALARM2              0x42
 116
 117 /* Real-time status (W83782D, W83783S, W83627HF) */
 118 #define W83782D_REG_ALARM1              0x459
 119 #define W83782D_REG_ALARM2              0x45A
 120 #define W83782D_REG_ALARM3              0x45B
 121
 122 #define W83781D_REG_BEEP_CONFIG         0x4D
 123 #define W83781D_REG_BEEP_INTS1          0x56
 124 #define W83781D_REG_BEEP_INTS2          0x57
 125 #define W83781D_REG_BEEP_INTS3          0x453   /* not on W83781D */
 126
 127 #define W83781D_REG_VID_FANDIV          0x47
 128
 129 #define W83781D_REG_CHIPID              0x49
 130 #define W83781D_REG_WCHIPID             0x58
 131 #define W83781D_REG_CHIPMAN             0x4F
 132 #define W83781D_REG_PIN                 0x4B
 133
 134 /* 782D/783S only */
 135 #define W83781D_REG_VBAT                0x5D
 136
 137 /* PWM 782D (1-4) and 783S (1-2) only */
 138 static const u8 W83781D_REG_PWM[] = { 0x5B, 0x5A, 0x5E, 0x5F };
 139 #define W83781D_REG_PWMCLK12            0x5C
 140 #define W83781D_REG_PWMCLK34            0x45C
 141
 142 #define W83781D_REG_I2C_ADDR            0x48
 143 #define W83781D_REG_I2C_SUBADDR         0x4A
 144
 145 /* The following are undocumented in the data sheets however we
 146    received the information in an email from Winbond tech support */
 147 /* Sensor selection - not on 781d */
 148 #define W83781D_REG_SCFG1               0x5D
 149 static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 };
 150
 151 #define W83781D_REG_SCFG2               0x59
 152 static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 };
 153
 154 #define W83781D_DEFAULT_BETA            3435
 155
 156 /* RT Table registers */
 157 #define W83781D_REG_RT_IDX              0x50
 158 #define W83781D_REG_RT_VAL              0x51
 159
 160 /* Conversions */
 161 #define IN_TO_REG(val)                  SENSORS_LIMIT(((val) + 8) / 16, 0, 255)
 162 #define IN_FROM_REG(val)                ((val) * 16)
 163
 164 static inline u8
 165 FAN_TO_REG(long rpm, int div)
 166 {
 167         if (rpm == 0)
 168                 return 255;
 169         rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 170         return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 171 }
 172
 173 static inline long
 174 FAN_FROM_REG(u8 val, int div)
 175 {
 176         if (val == 0)
 177                 return -1;
 178         if (val == 255)
 179                 return 0;
 180         return 1350000 / (val * div);
 181 }
 182
 183 #define TEMP_TO_REG(val)                SENSORS_LIMIT((val) / 1000, -127, 128)
 184 #define TEMP_FROM_REG(val)              ((val) * 1000)
 185
 186 #define BEEP_MASK_FROM_REG(val,type)    ((type) == as99127f ? \
 187                                          (val) ^ 0x7fff : (val))
 188 #define BEEP_MASK_TO_REG(val,type)      ((type) == as99127f ? \
 189                                          (~(val)) & 0x7fff : (val) & 0xffffff)
 190
 191 #define DIV_FROM_REG(val)               (1 << (val))
 192
 193 static inline u8
 194 DIV_TO_REG(long val, enum chips type)
 195 {
 196         int i;
 197         val = SENSORS_LIMIT(val, 1,
 198                             ((type == w83781d
 199                               || type == as99127f) ? 8 : 128)) >> 1;
 200         for (i = 0; i < 7; i++) {
 201                 if (val == 0)
 202                         break;
 203                 val >>= 1;
 204         }
 205         return i;
 206 }
 207
 208 /* There are some complications in a module like this. First off, W83781D chips
 209    may be both present on the SMBus and the ISA bus, and we have to handle
 210    those cases separately at some places. Second, there might be several
 211    W83781D chips available (well, actually, that is probably never done; but
 212    it is a clean illustration of how to handle a case like that). Finally,
 213    a specific chip may be attached to *both* ISA and SMBus, and we would
 214    not like to detect it double. Fortunately, in the case of the W83781D at
 215    least, a register tells us what SMBus address we are on, so that helps
 216    a bit - except if there could be more than one SMBus. Groan. No solution
 217    for this yet. */
 218
 219 /* For ISA chips, we abuse the i2c_client addr and name fields. We also use
 220    the driver field to differentiate between I2C and ISA chips. */
 221 struct w83781d_data {
 222         struct i2c_client client;
 223         struct device *hwmon_dev;
 224         struct mutex lock;
 225         enum chips type;
 226
 227         struct mutex update_lock;
 228         char valid;             /* !=0 if following fields are valid */
 229         unsigned long last_updated;     /* In jiffies */
 230
 231         struct i2c_client *lm75[2];     /* for secondary I2C addresses */
 232         /* array of 2 pointers to subclients */
 233
 234         u8 in[9];               /* Register value - 8 & 9 for 782D only */
 235         u8 in_max[9];           /* Register value - 8 & 9 for 782D only */
 236         u8 in_min[9];           /* Register value - 8 & 9 for 782D only */
 237         u8 fan[3];              /* Register value */
 238         u8 fan_min[3];          /* Register value */
 239         s8 temp;                /* Register value */
 240         s8 temp_max;            /* Register value */
 241         s8 temp_max_hyst;       /* Register value */
 242         u16 temp_add[2];        /* Register value */
 243         u16 temp_max_add[2];    /* Register value */
 244         u16 temp_max_hyst_add[2];       /* Register value */
 245         u8 fan_div[3];          /* Register encoding, shifted right */
 246         u8 vid;                 /* Register encoding, combined */
 247         u32 alarms;             /* Register encoding, combined */
 248         u32 beep_mask;          /* Register encoding, combined */
 249         u8 beep_enable;         /* Boolean */
 250         u8 pwm[4];              /* Register value */
 251         u8 pwm2_enable;         /* Boolean */
 252         u16 sens[3];            /* 782D/783S only.
 253                                    1 = pentium diode; 2 = 3904 diode;
 254                                    4 = thermistor */
 255         u8 vrm;
 256 };
 257
 258 static int w83781d_attach_adapter(struct i2c_adapter *adapter);
 259 static int w83781d_detect(struct i2c_adapter *adapter, int address, int kind);
 260 static int w83781d_detach_client(struct i2c_client *client);
 261
 262 static int __devinit w83781d_isa_probe(struct platform_device *pdev);
 263 static int __devexit w83781d_isa_remove(struct platform_device *pdev);
 264
 265 static int w83781d_read_value(struct w83781d_data *data, u16 reg);
 266 static int w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value);
 267 static struct w83781d_data *w83781d_update_device(struct device *dev);
 268 static void w83781d_init_device(struct device *dev);
 269
 270 static struct i2c_driver w83781d_driver = {
 271         .driver = {
 272                 .name = "w83781d",
 273         },
 274         .id = I2C_DRIVERID_W83781D,
 275         .attach_adapter = w83781d_attach_adapter,
 276         .detach_client = w83781d_detach_client,
 277 };
 278
 279 static struct platform_driver w83781d_isa_driver = {
 280         .driver = {
 281                 .owner = THIS_MODULE,
 282                 .name = "w83781d",
 283         },
 284         .probe = w83781d_isa_probe,
 285         .remove = w83781d_isa_remove,
 286 };
 287
 288
 289 /* following are the sysfs callback functions */
 290 #define show_in_reg(reg) \
 291 static ssize_t show_##reg (struct device *dev, struct device_attribute *da, \
 292                 char *buf) \
 293 { \
 294         struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
 295         struct w83781d_data *data = w83781d_update_device(dev); \
 296         return sprintf(buf, "%ld\n", \
 297                        (long)IN_FROM_REG(data->reg[attr->index])); \
 298 }
 299 show_in_reg(in);
 300 show_in_reg(in_min);
 301 show_in_reg(in_max);
 302
 303 #define store_in_reg(REG, reg) \
 304 static ssize_t store_in_##reg (struct device *dev, struct device_attribute \
 305                 *da, const char *buf, size_t count) \
 306 { \
 307         struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
 308         struct w83781d_data *data = dev_get_drvdata(dev); \
 309         int nr = attr->index; \
 310         u32 val; \
 311          \
 312         val = simple_strtoul(buf, NULL, 10); \
 313          \
 314         mutex_lock(&data->update_lock); \
 315         data->in_##reg[nr] = IN_TO_REG(val); \
 316         w83781d_write_value(data, 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_offsets(offset) \
 325 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
 326                 show_in, NULL, offset); \
 327 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
 328                 show_in_min, store_in_min, offset); \
 329 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
 330                 show_in_max, store_in_max, offset)
 331
 332 sysfs_in_offsets(0);
 333 sysfs_in_offsets(1);
 334 sysfs_in_offsets(2);
 335 sysfs_in_offsets(3);
 336 sysfs_in_offsets(4);
 337 sysfs_in_offsets(5);
 338 sysfs_in_offsets(6);
 339 sysfs_in_offsets(7);
 340 sysfs_in_offsets(8);
 341
 342 #define show_fan_reg(reg) \
 343 static ssize_t show_##reg (struct device *dev, struct device_attribute *da, \
 344                 char *buf) \
 345 { \
 346         struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
 347         struct w83781d_data *data = w83781d_update_device(dev); \
 348         return sprintf(buf,"%ld\n", \
 349                 FAN_FROM_REG(data->reg[attr->index], \
 350                         DIV_FROM_REG(data->fan_div[attr->index]))); \
 351 }
 352 show_fan_reg(fan);
 353 show_fan_reg(fan_min);
 354
 355 static ssize_t
 356 store_fan_min(struct device *dev, struct device_attribute *da,
 357                 const char *buf, size_t count)
 358 {
 359         struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
 360         struct w83781d_data *data = dev_get_drvdata(dev);
 361         int nr = attr->index;
 362         u32 val;
 363
 364         val = simple_strtoul(buf, NULL, 10);
 365
 366         mutex_lock(&data->update_lock);
 367         data->fan_min[nr] =
 368             FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 369         w83781d_write_value(data, W83781D_REG_FAN_MIN(nr),
 370                             data->fan_min[nr]);
 371
 372         mutex_unlock(&data->update_lock);
 373         return count;
 374 }
 375
 376 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
 377 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR,
 378                 show_fan_min, store_fan_min, 0);
 379 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
 380 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR,
 381                 show_fan_min, store_fan_min, 1);
 382 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
 383 static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO | S_IWUSR,
 384                 show_fan_min, store_fan_min, 2);
 385
 386 #define show_temp_reg(reg) \
 387 static ssize_t show_##reg (struct device *dev, struct device_attribute *da, \
 388                 char *buf) \
 389 { \
 390         struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
 391         struct w83781d_data *data = w83781d_update_device(dev); \
 392         int nr = attr->index; \
 393         if (nr >= 2) {  /* TEMP2 and TEMP3 */ \
 394                 return sprintf(buf,"%d\n", \
 395                         LM75_TEMP_FROM_REG(data->reg##_add[nr-2])); \
 396         } else {        /* TEMP1 */ \
 397                 return sprintf(buf,"%ld\n", (long)TEMP_FROM_REG(data->reg)); \
 398         } \
 399 }
 400 show_temp_reg(temp);
 401 show_temp_reg(temp_max);
 402 show_temp_reg(temp_max_hyst);
 403
 404 #define store_temp_reg(REG, reg) \
 405 static ssize_t store_temp_##reg (struct device *dev, \
 406                 struct device_attribute *da, const char *buf, size_t count) \
 407 { \
 408         struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \
 409         struct w83781d_data *data = dev_get_drvdata(dev); \
 410         int nr = attr->index; \
 411         long val; \
 412          \
 413         val = simple_strtol(buf, NULL, 10); \
 414          \
 415         mutex_lock(&data->update_lock); \
 416          \
 417         if (nr >= 2) {  /* TEMP2 and TEMP3 */ \
 418                 data->temp_##reg##_add[nr-2] = LM75_TEMP_TO_REG(val); \
 419                 w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
 420                                 data->temp_##reg##_add[nr-2]); \
 421         } else {        /* TEMP1 */ \
 422                 data->temp_##reg = TEMP_TO_REG(val); \
 423                 w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \
 424                         data->temp_##reg); \
 425         } \
 426          \
 427         mutex_unlock(&data->update_lock); \
 428         return count; \
 429 }
 430 store_temp_reg(OVER, max);
 431 store_temp_reg(HYST, max_hyst);
 432
 433 #define sysfs_temp_offsets(offset) \
 434 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
 435                 show_temp, NULL, offset); \
 436 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
 437                 show_temp_max, store_temp_max, offset); \
 438 static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \
 439                 show_temp_max_hyst, store_temp_max_hyst, offset);
 440
 441 sysfs_temp_offsets(1);
 442 sysfs_temp_offsets(2);
 443 sysfs_temp_offsets(3);
 444
 445 static ssize_t
 446 show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
 447 {
 448         struct w83781d_data *data = w83781d_update_device(dev);
 449         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
 450 }
 451
 452 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
 453
 454 static ssize_t
 455 show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
 456 {
 457         struct w83781d_data *data = dev_get_drvdata(dev);
 458         return sprintf(buf, "%ld\n", (long) data->vrm);
 459 }
 460
 461 static ssize_t
 462 store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 463 {
 464         struct w83781d_data *data = dev_get_drvdata(dev);
 465         u32 val;
 466
 467         val = simple_strtoul(buf, NULL, 10);
 468         data->vrm = val;
 469
 470         return count;
 471 }
 472
 473 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
 474
 475 static ssize_t
 476 show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
 477 {
 478         struct w83781d_data *data = w83781d_update_device(dev);
 479         return sprintf(buf, "%u\n", data->alarms);
 480 }
 481
 482 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
 483
 484 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
 485                 char *buf)
 486 {
 487         struct w83781d_data *data = w83781d_update_device(dev);
 488         int bitnr = to_sensor_dev_attr(attr)->index;
 489         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
 490 }
 491
 492 /* The W83781D has a single alarm bit for temp2 and temp3 */
 493 static ssize_t show_temp3_alarm(struct device *dev,
 494                 struct device_attribute *attr, char *buf)
 495 {
 496         struct w83781d_data *data = w83781d_update_device(dev);
 497         int bitnr = (data->type == w83781d) ? 5 : 13;
 498         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
 499 }
 500
 501 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
 502 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
 503 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
 504 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
 505 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
 506 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9);
 507 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10);
 508 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16);
 509 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17);
 510 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6);
 511 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7);
 512 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11);
 513 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
 514 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
 515 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_temp3_alarm, NULL, 0);
 516
 517 static ssize_t show_beep_mask (struct device *dev, struct device_attribute *attr, char *buf)
 518 {
 519         struct w83781d_data *data = w83781d_update_device(dev);
 520         return sprintf(buf, "%ld\n",
 521                        (long)BEEP_MASK_FROM_REG(data->beep_mask, data->type));
 522 }
 523 static ssize_t show_beep_enable (struct device *dev, struct device_attribute *attr, char *buf)
 524 {
 525         struct w83781d_data *data = w83781d_update_device(dev);
 526         return sprintf(buf, "%ld\n", (long)data->beep_enable);
 527 }
 528
 529 static ssize_t
 530 store_beep_mask(struct device *dev, struct device_attribute *attr,
 531                 const char *buf, size_t count)
 532 {
 533         struct w83781d_data *data = dev_get_drvdata(dev);
 534         u32 val;
 535
 536         val = simple_strtoul(buf, NULL, 10);
 537
 538         mutex_lock(&data->update_lock);
 539         data->beep_mask = BEEP_MASK_TO_REG(val, data->type);
 540         w83781d_write_value(data, W83781D_REG_BEEP_INTS1,
 541                             data->beep_mask & 0xff);
 542         w83781d_write_value(data, W83781D_REG_BEEP_INTS2,
 543                             ((data->beep_mask >> 8) & 0x7f)
 544                             | data->beep_enable << 7);
 545         if (data->type != w83781d && data->type != as99127f) {
 546                 w83781d_write_value(data, W83781D_REG_BEEP_INTS3,
 547                                     ((data->beep_mask) >> 16) & 0xff);
 548         }
 549         mutex_unlock(&data->update_lock);
 550
 551         return count;
 552 }
 553
 554 static ssize_t
 555 store_beep_enable(struct device *dev, struct device_attribute *attr,
 556                 const char *buf, size_t count)
 557 {
 558         struct w83781d_data *data = dev_get_drvdata(dev);
 559         u32 val;
 560
 561         val = simple_strtoul(buf, NULL, 10);
 562         if (val != 0 && val != 1)
 563                 return -EINVAL;
 564
 565         mutex_lock(&data->update_lock);
 566         data->beep_enable = val;
 567         val = w83781d_read_value(data, W83781D_REG_BEEP_INTS2) & 0x7f;
 568         val |= data->beep_enable << 7;
 569         w83781d_write_value(data, W83781D_REG_BEEP_INTS2, val);
 570         mutex_unlock(&data->update_lock);
 571
 572         return count;
 573 }
 574
 575 static DEVICE_ATTR(beep_mask, S_IRUGO | S_IWUSR,
 576                 show_beep_mask, store_beep_mask);
 577 static DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR,
 578                 show_beep_enable, store_beep_enable);
 579
 580 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
 581                 char *buf)
 582 {
 583         struct w83781d_data *data = w83781d_update_device(dev);
 584         int bitnr = to_sensor_dev_attr(attr)->index;
 585         return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
 586 }
 587
 588 static ssize_t
 589 store_beep(struct device *dev, struct device_attribute *attr,
 590                 const char *buf, size_t count)
 591 {
 592         struct w83781d_data *data = dev_get_drvdata(dev);
 593         int bitnr = to_sensor_dev_attr(attr)->index;
 594         unsigned long bit;
 595         u8 reg;
 596
 597         bit = simple_strtoul(buf, NULL, 10);
 598         if (bit & ~1)
 599                 return -EINVAL;
 600
 601         mutex_lock(&data->update_lock);
 602         if (bit)
 603                 data->beep_mask |= (1 << bitnr);
 604         else
 605                 data->beep_mask &= ~(1 << bitnr);
 606
 607         if (bitnr < 8) {
 608                 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
 609                 if (bit)
 610                         reg |= (1 << bitnr);
 611                 else
 612                         reg &= ~(1 << bitnr);
 613                 w83781d_write_value(data, W83781D_REG_BEEP_INTS1, reg);
 614         } else if (bitnr < 16) {
 615                 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
 616                 if (bit)
 617                         reg |= (1 << (bitnr - 8));
 618                 else
 619                         reg &= ~(1 << (bitnr - 8));
 620                 w83781d_write_value(data, W83781D_REG_BEEP_INTS2, reg);
 621         } else {
 622                 reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS3);
 623                 if (bit)
 624                         reg |= (1 << (bitnr - 16));
 625                 else
 626                         reg &= ~(1 << (bitnr - 16));
 627                 w83781d_write_value(data, W83781D_REG_BEEP_INTS3, reg);
 628         }
 629         mutex_unlock(&data->update_lock);
 630
 631         return count;
 632 }
 633
 634 /* The W83781D has a single beep bit for temp2 and temp3 */
 635 static ssize_t show_temp3_beep(struct device *dev,
 636                 struct device_attribute *attr, char *buf)
 637 {
 638         struct w83781d_data *data = w83781d_update_device(dev);
 639         int bitnr = (data->type == w83781d) ? 5 : 13;
 640         return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
 641 }
 642
 643 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
 644                         show_beep, store_beep, 0);
 645 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR,
 646                         show_beep, store_beep, 1);
 647 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR,
 648                         show_beep, store_beep, 2);
 649 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR,
 650                         show_beep, store_beep, 3);
 651 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR,
 652                         show_beep, store_beep, 8);
 653 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO | S_IWUSR,
 654                         show_beep, store_beep, 9);
 655 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO | S_IWUSR,
 656                         show_beep, store_beep, 10);
 657 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO | S_IWUSR,
 658                         show_beep, store_beep, 16);
 659 static SENSOR_DEVICE_ATTR(in8_beep, S_IRUGO | S_IWUSR,
 660                         show_beep, store_beep, 17);
 661 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR,
 662                         show_beep, store_beep, 6);
 663 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR,
 664                         show_beep, store_beep, 7);
 665 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO | S_IWUSR,
 666                         show_beep, store_beep, 11);
 667 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
 668                         show_beep, store_beep, 4);
 669 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR,
 670                         show_beep, store_beep, 5);
 671 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO,
 672                         show_temp3_beep, store_beep, 13);
 673
 674 static ssize_t
 675 show_fan_div(struct device *dev, struct device_attribute *da, char *buf)
 676 {
 677         struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
 678         struct w83781d_data *data = w83781d_update_device(dev);
 679         return sprintf(buf, "%ld\n",
 680                        (long) DIV_FROM_REG(data->fan_div[attr->index]));
 681 }
 682
 683 /* Note: we save and restore the fan minimum here, because its value is
 684    determined in part by the fan divisor.  This follows the principle of
 685    least surprise; the user doesn't expect the fan minimum to change just
 686    because the divisor changed. */
 687 static ssize_t
 688 store_fan_div(struct device *dev, struct device_attribute *da,
 689                 const char *buf, size_t count)
 690 {
 691         struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
 692         struct w83781d_data *data = dev_get_drvdata(dev);
 693         unsigned long min;
 694         int nr = attr->index;
 695         u8 reg;
 696         unsigned long val = simple_strtoul(buf, NULL, 10);
 697
 698         mutex_lock(&data->update_lock);
 699
 700         /* Save fan_min */
 701         min = FAN_FROM_REG(data->fan_min[nr],
 702                            DIV_FROM_REG(data->fan_div[nr]));
 703
 704         data->fan_div[nr] = DIV_TO_REG(val, data->type);
 705
 706         reg = (w83781d_read_value(data, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV)
 707                & (nr==0 ? 0xcf : 0x3f))
 708             | ((data->fan_div[nr] & 0x03) << (nr==0 ? 4 : 6));
 709         w83781d_write_value(data, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg);
 710
 711         /* w83781d and as99127f don't have extended divisor bits */
 712         if (data->type != w83781d && data->type != as99127f) {
 713                 reg = (w83781d_read_value(data, W83781D_REG_VBAT)
 714                        & ~(1 << (5 + nr)))
 715                     | ((data->fan_div[nr] & 0x04) << (3 + nr));
 716                 w83781d_write_value(data, W83781D_REG_VBAT, reg);
 717         }
 718
 719         /* Restore fan_min */
 720         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 721         w83781d_write_value(data, W83781D_REG_FAN_MIN(nr), data->fan_min[nr]);
 722
 723         mutex_unlock(&data->update_lock);
 724         return count;
 725 }
 726
 727 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
 728                 show_fan_div, store_fan_div, 0);
 729 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
 730                 show_fan_div, store_fan_div, 1);
 731 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR,
 732                 show_fan_div, store_fan_div, 2);
 733
 734 static ssize_t
 735 show_pwm(struct device *dev, struct device_attribute *da, char *buf)
 736 {
 737         struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
 738         struct w83781d_data *data = w83781d_update_device(dev);
 739         return sprintf(buf, "%d\n", (int)data->pwm[attr->index]);
 740 }
 741
 742 static ssize_t
 743 show_pwm2_enable(struct device *dev, struct device_attribute *da, char *buf)
 744 {
 745         struct w83781d_data *data = w83781d_update_device(dev);
 746         return sprintf(buf, "%d\n", (int)data->pwm2_enable);
 747 }
 748
 749 static ssize_t
 750 store_pwm(struct device *dev, struct device_attribute *da, const char *buf,
 751                 size_t count)
 752 {
 753         struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
 754         struct w83781d_data *data = dev_get_drvdata(dev);
 755         int nr = attr->index;
 756         u32 val;
 757
 758         val = simple_strtoul(buf, NULL, 10);
 759
 760         mutex_lock(&data->update_lock);
 761         data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
 762         w83781d_write_value(data, W83781D_REG_PWM[nr], data->pwm[nr]);
 763         mutex_unlock(&data->update_lock);
 764         return count;
 765 }
 766
 767 static ssize_t
 768 store_pwm2_enable(struct device *dev, struct device_attribute *da,
 769                 const char *buf, size_t count)
 770 {
 771         struct w83781d_data *data = dev_get_drvdata(dev);
 772         u32 val, reg;
 773
 774         val = simple_strtoul(buf, NULL, 10);
 775
 776         mutex_lock(&data->update_lock);
 777
 778         switch (val) {
 779         case 0:
 780         case 1:
 781                 reg = w83781d_read_value(data, W83781D_REG_PWMCLK12);
 782                 w83781d_write_value(data, W83781D_REG_PWMCLK12,
 783                                     (reg & 0xf7) | (val << 3));
 784
 785                 reg = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
 786                 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG,
 787                                     (reg & 0xef) | (!val << 4));
 788
 789                 data->pwm2_enable = val;
 790                 break;
 791
 792         default:
 793                 mutex_unlock(&data->update_lock);
 794                 return -EINVAL;
 795         }
 796
 797         mutex_unlock(&data->update_lock);
 798         return count;
 799 }
 800
 801 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 0);
 802 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 1);
 803 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 2);
 804 static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 3);
 805 /* only PWM2 can be enabled/disabled */
 806 static DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
 807                 show_pwm2_enable, store_pwm2_enable);
 808
 809 static ssize_t
 810 show_sensor(struct device *dev, struct device_attribute *da, char *buf)
 811 {
 812         struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
 813         struct w83781d_data *data = w83781d_update_device(dev);
 814         return sprintf(buf, "%d\n", (int)data->sens[attr->index]);
 815 }
 816
 817 static ssize_t
 818 store_sensor(struct device *dev, struct device_attribute *da,
 819                 const char *buf, size_t count)
 820 {
 821         struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
 822         struct w83781d_data *data = dev_get_drvdata(dev);
 823         int nr = attr->index;
 824         u32 val, tmp;
 825
 826         val = simple_strtoul(buf, NULL, 10);
 827
 828         mutex_lock(&data->update_lock);
 829
 830         switch (val) {
 831         case 1:         /* PII/Celeron diode */
 832                 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
 833                 w83781d_write_value(data, W83781D_REG_SCFG1,
 834                                     tmp | BIT_SCFG1[nr]);
 835                 tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
 836                 w83781d_write_value(data, W83781D_REG_SCFG2,
 837                                     tmp | BIT_SCFG2[nr]);
 838                 data->sens[nr] = val;
 839                 break;
 840         case 2:         /* 3904 */
 841                 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
 842                 w83781d_write_value(data, W83781D_REG_SCFG1,
 843                                     tmp | BIT_SCFG1[nr]);
 844                 tmp = w83781d_read_value(data, W83781D_REG_SCFG2);
 845                 w83781d_write_value(data, W83781D_REG_SCFG2,
 846                                     tmp & ~BIT_SCFG2[nr]);
 847                 data->sens[nr] = val;
 848                 break;
 849         case W83781D_DEFAULT_BETA:
 850                 dev_warn(dev, "Sensor type %d is deprecated, please use 4 "
 851                          "instead\n", W83781D_DEFAULT_BETA);
 852                 /* fall through */
 853         case 4:         /* thermistor */
 854                 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
 855                 w83781d_write_value(data, W83781D_REG_SCFG1,
 856                                     tmp & ~BIT_SCFG1[nr]);
 857                 data->sens[nr] = val;
 858                 break;
 859         default:
 860                 dev_err(dev, "Invalid sensor type %ld; must be 1, 2, or 4\n",
 861                        (long) val);
 862                 break;
 863         }
 864
 865         mutex_unlock(&data->update_lock);
 866         return count;
 867 }
 868
 869 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR,
 870         show_sensor, store_sensor, 0);
 871 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR,
 872         show_sensor, store_sensor, 1);
 873 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR,
 874         show_sensor, store_sensor, 2);
 875
 876 /* I2C devices get this name attribute automatically, but for ISA devices
 877    we must create it by ourselves. */
 878 static ssize_t
 879 show_name(struct device *dev, struct device_attribute *devattr, char *buf)
 880 {
 881         struct w83781d_data *data = dev_get_drvdata(dev);
 882         return sprintf(buf, "%s\n", data->client.name);
 883 }
 884 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
 885
 886 /* This function is called when:
 887      * w83781d_driver is inserted (when this module is loaded), for each
 888        available adapter
 889      * when a new adapter is inserted (and w83781d_driver is still present) */
 890 static int
 891 w83781d_attach_adapter(struct i2c_adapter *adapter)
 892 {
 893         if (!(adapter->class & I2C_CLASS_HWMON))
 894                 return 0;
 895         return i2c_probe(adapter, &addr_data, w83781d_detect);
 896 }
 897
 898 /* Assumes that adapter is of I2C, not ISA variety.
 899  * OTHERWISE DON'T CALL THIS
 900  */
 901 static int
 902 w83781d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
 903                 struct i2c_client *new_client)
 904 {
 905         int i, val1 = 0, id;
 906         int err;
 907         const char *client_name = "";
 908         struct w83781d_data *data = i2c_get_clientdata(new_client);
 909
 910         data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 911         if (!(data->lm75[0])) {
 912                 err = -ENOMEM;
 913                 goto ERROR_SC_0;
 914         }
 915
 916         id = i2c_adapter_id(adapter);
 917
 918         if (force_subclients[0] == id && force_subclients[1] == address) {
 919                 for (i = 2; i <= 3; i++) {
 920                         if (force_subclients[i] < 0x48 ||
 921                             force_subclients[i] > 0x4f) {
 922                                 dev_err(&new_client->dev, "Invalid subclient "
 923                                         "address %d; must be 0x48-0x4f\n",
 924                                         force_subclients[i]);
 925                                 err = -EINVAL;
 926                                 goto ERROR_SC_1;
 927                         }
 928                 }
 929                 w83781d_write_value(data, W83781D_REG_I2C_SUBADDR,
 930                                 (force_subclients[2] & 0x07) |
 931                                 ((force_subclients[3] & 0x07) << 4));
 932                 data->lm75[0]->addr = force_subclients[2];
 933         } else {
 934                 val1 = w83781d_read_value(data, W83781D_REG_I2C_SUBADDR);
 935                 data->lm75[0]->addr = 0x48 + (val1 & 0x07);
 936         }
 937
 938         if (kind != w83783s) {
 939                 data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 940                 if (!(data->lm75[1])) {
 941                         err = -ENOMEM;
 942                         goto ERROR_SC_1;
 943                 }
 944
 945                 if (force_subclients[0] == id &&
 946                     force_subclients[1] == address) {
 947                         data->lm75[1]->addr = force_subclients[3];
 948                 } else {
 949                         data->lm75[1]->addr = 0x48 + ((val1 >> 4) & 0x07);
 950                 }
 951                 if (data->lm75[0]->addr == data->lm75[1]->addr) {
 952                         dev_err(&new_client->dev,
 953                                "Duplicate addresses 0x%x for subclients.\n",
 954                                data->lm75[0]->addr);
 955                         err = -EBUSY;
 956                         goto ERROR_SC_2;
 957                 }
 958         }
 959
 960         if (kind == w83781d)
 961                 client_name = "w83781d subclient";
 962         else if (kind == w83782d)
 963                 client_name = "w83782d subclient";
 964         else if (kind == w83783s)
 965                 client_name = "w83783s subclient";
 966         else if (kind == w83627hf)
 967                 client_name = "w83627hf subclient";
 968         else if (kind == as99127f)
 969                 client_name = "as99127f subclient";
 970
 971         for (i = 0; i <= 1; i++) {
 972                 /* store all data in w83781d */
 973                 i2c_set_clientdata(data->lm75[i], NULL);
 974                 data->lm75[i]->adapter = adapter;
 975                 data->lm75[i]->driver = &w83781d_driver;
 976                 data->lm75[i]->flags = 0;
 977                 strlcpy(data->lm75[i]->name, client_name,
 978                         I2C_NAME_SIZE);
 979                 if ((err = i2c_attach_client(data->lm75[i]))) {
 980                         dev_err(&new_client->dev, "Subclient %d "
 981                                 "registration at address 0x%x "
 982                                 "failed.\n", i, data->lm75[i]->addr);
 983                         if (i == 1)
 984                                 goto ERROR_SC_3;
 985                         goto ERROR_SC_2;
 986                 }
 987                 if (kind == w83783s)
 988                         break;
 989         }
 990
 991         return 0;
 992
 993 /* Undo inits in case of errors */
 994 ERROR_SC_3:
 995         i2c_detach_client(data->lm75[0]);
 996 ERROR_SC_2:
 997         kfree(data->lm75[1]);
 998 ERROR_SC_1:
 999         kfree(data->lm75[0]);
1000 ERROR_SC_0:
1001         return err;
1002 }
1003
1004 #define IN_UNIT_ATTRS(X)                                        \
1005         &sensor_dev_attr_in##X##_input.dev_attr.attr,           \
1006         &sensor_dev_attr_in##X##_min.dev_attr.attr,             \
1007         &sensor_dev_attr_in##X##_max.dev_attr.attr,             \
1008         &sensor_dev_attr_in##X##_alarm.dev_attr.attr,           \
1009         &sensor_dev_attr_in##X##_beep.dev_attr.attr
1010
1011 #define FAN_UNIT_ATTRS(X)                                       \
1012         &sensor_dev_attr_fan##X##_input.dev_attr.attr,          \
1013         &sensor_dev_attr_fan##X##_min.dev_attr.attr,            \
1014         &sensor_dev_attr_fan##X##_div.dev_attr.attr,            \
1015         &sensor_dev_attr_fan##X##_alarm.dev_attr.attr,          \
1016         &sensor_dev_attr_fan##X##_beep.dev_attr.attr
1017
1018 #define TEMP_UNIT_ATTRS(X)                                      \
1019         &sensor_dev_attr_temp##X##_input.dev_attr.attr,         \
1020         &sensor_dev_attr_temp##X##_max.dev_attr.attr,           \
1021         &sensor_dev_attr_temp##X##_max_hyst.dev_attr.attr,      \
1022         &sensor_dev_attr_temp##X##_alarm.dev_attr.attr,         \
1023         &sensor_dev_attr_temp##X##_beep.dev_attr.attr
1024
1025 static struct attribute* w83781d_attributes[] = {
1026         IN_UNIT_ATTRS(0),
1027         IN_UNIT_ATTRS(2),
1028         IN_UNIT_ATTRS(3),
1029         IN_UNIT_ATTRS(4),
1030         IN_UNIT_ATTRS(5),
1031         IN_UNIT_ATTRS(6),
1032         FAN_UNIT_ATTRS(1),
1033         FAN_UNIT_ATTRS(2),
1034         FAN_UNIT_ATTRS(3),
1035         TEMP_UNIT_ATTRS(1),
1036         TEMP_UNIT_ATTRS(2),
1037         &dev_attr_cpu0_vid.attr,
1038         &dev_attr_vrm.attr,
1039         &dev_attr_alarms.attr,
1040         &dev_attr_beep_mask.attr,
1041         &dev_attr_beep_enable.attr,
1042         NULL
1043 };
1044 static const struct attribute_group w83781d_group = {
1045         .attrs = w83781d_attributes,
1046 };
1047
1048 static struct attribute *w83781d_attributes_opt[] = {
1049         IN_UNIT_ATTRS(1),
1050         IN_UNIT_ATTRS(7),
1051         IN_UNIT_ATTRS(8),
1052         TEMP_UNIT_ATTRS(3),
1053         &sensor_dev_attr_pwm1.dev_attr.attr,
1054         &sensor_dev_attr_pwm2.dev_attr.attr,
1055         &sensor_dev_attr_pwm3.dev_attr.attr,
1056         &sensor_dev_attr_pwm4.dev_attr.attr,
1057         &dev_attr_pwm2_enable.attr,
1058         &sensor_dev_attr_temp1_type.dev_attr.attr,
1059         &sensor_dev_attr_temp2_type.dev_attr.attr,
1060         &sensor_dev_attr_temp3_type.dev_attr.attr,
1061         NULL
1062 };
1063 static const struct attribute_group w83781d_group_opt = {
1064         .attrs = w83781d_attributes_opt,
1065 };
1066
1067 /* No clean up is done on error, it's up to the caller */
1068 static int
1069 w83781d_create_files(struct device *dev, int kind, int is_isa)
1070 {
1071         int err;
1072
1073         if ((err = sysfs_create_group(&dev->kobj, &w83781d_group)))
1074                 return err;
1075
1076         if (kind != w83783s) {
1077                 if ((err = device_create_file(dev,
1078                                 &sensor_dev_attr_in1_input.dev_attr))
1079                     || (err = device_create_file(dev,
1080                                 &sensor_dev_attr_in1_min.dev_attr))
1081                     || (err = device_create_file(dev,
1082                                 &sensor_dev_attr_in1_max.dev_attr))
1083                     || (err = device_create_file(dev,
1084                                 &sensor_dev_attr_in1_alarm.dev_attr))
1085                     || (err = device_create_file(dev,
1086                                 &sensor_dev_attr_in1_beep.dev_attr)))
1087                         return err;
1088         }
1089         if (kind != as99127f && kind != w83781d && kind != w83783s) {
1090                 if ((err = device_create_file(dev,
1091                                 &sensor_dev_attr_in7_input.dev_attr))
1092                     || (err = device_create_file(dev,
1093                                 &sensor_dev_attr_in7_min.dev_attr))
1094                     || (err = device_create_file(dev,
1095                                 &sensor_dev_attr_in7_max.dev_attr))
1096                     || (err = device_create_file(dev,
1097                                 &sensor_dev_attr_in7_alarm.dev_attr))
1098                     || (err = device_create_file(dev,
1099                                 &sensor_dev_attr_in7_beep.dev_attr))
1100                     || (err = device_create_file(dev,
1101                                 &sensor_dev_attr_in8_input.dev_attr))
1102                     || (err = device_create_file(dev,
1103                                 &sensor_dev_attr_in8_min.dev_attr))
1104                     || (err = device_create_file(dev,
1105                                 &sensor_dev_attr_in8_max.dev_attr))
1106                     || (err = device_create_file(dev,
1107                                 &sensor_dev_attr_in8_alarm.dev_attr))
1108                     || (err = device_create_file(dev,
1109                                 &sensor_dev_attr_in8_beep.dev_attr)))
1110                         return err;
1111         }
1112         if (kind != w83783s) {
1113                 if ((err = device_create_file(dev,
1114                                 &sensor_dev_attr_temp3_input.dev_attr))
1115                     || (err = device_create_file(dev,
1116                                 &sensor_dev_attr_temp3_max.dev_attr))
1117                     || (err = device_create_file(dev,
1118                                 &sensor_dev_attr_temp3_max_hyst.dev_attr))
1119                     || (err = device_create_file(dev,
1120                                 &sensor_dev_attr_temp3_alarm.dev_attr))
1121                     || (err = device_create_file(dev,
1122                                 &sensor_dev_attr_temp3_beep.dev_attr)))
1123                         return err;
1124
1125                 if (kind != w83781d)
1126                         err = sysfs_chmod_file(&dev->kobj,
1127                                 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1128                                 S_IRUGO | S_IWUSR);
1129                         if (err)
1130                                 return err;
1131         }
1132
1133         if (kind != w83781d && kind != as99127f) {
1134                 if ((err = device_create_file(dev,
1135                                 &sensor_dev_attr_pwm1.dev_attr))
1136                     || (err = device_create_file(dev,
1137                                 &sensor_dev_attr_pwm2.dev_attr))
1138                     || (err = device_create_file(dev, &dev_attr_pwm2_enable)))
1139                         return err;
1140         }
1141         if (kind == w83782d && !is_isa) {
1142                 if ((err = device_create_file(dev,
1143                                 &sensor_dev_attr_pwm3.dev_attr))
1144                     || (err = device_create_file(dev,
1145                                 &sensor_dev_attr_pwm4.dev_attr)))
1146                         return err;
1147         }
1148
1149         if (kind != as99127f && kind != w83781d) {
1150                 if ((err = device_create_file(dev,
1151                                 &sensor_dev_attr_temp1_type.dev_attr))
1152                     || (err = device_create_file(dev,
1153                                 &sensor_dev_attr_temp2_type.dev_attr)))
1154                         return err;
1155                 if (kind != w83783s) {
1156                         if ((err = device_create_file(dev,
1157                                         &sensor_dev_attr_temp3_type.dev_attr)))
1158                                 return err;
1159                 }
1160         }
1161
1162         if (is_isa) {
1163                 err = device_create_file(&pdev->dev, &dev_attr_name);
1164                 if (err)
1165                         return err;
1166         }
1167
1168         return 0;
1169 }
1170
1171 static int
1172 w83781d_detect(struct i2c_adapter *adapter, int address, int kind)
1173 {
1174         int val1 = 0, val2;
1175         struct i2c_client *client;
1176         struct device *dev;
1177         struct w83781d_data *data;
1178         int err;
1179         const char *client_name = "";
1180         enum vendor { winbond, asus } vendid;
1181
1182         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1183                 err = -EINVAL;
1184                 goto ERROR1;
1185         }
1186
1187         /* OK. For now, we presume we have a valid client. We now create the
1188            client structure, even though we cannot fill it completely yet.
1189            But it allows us to access w83781d_{read,write}_value. */
1190
1191         if (!(data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL))) {
1192                 err = -ENOMEM;
1193                 goto ERROR1;
1194         }
1195
1196         client = &data->client;
1197         i2c_set_clientdata(client, data);
1198         client->addr = address;
1199         mutex_init(&data->lock);
1200         client->adapter = adapter;
1201         client->driver = &w83781d_driver;
1202         dev = &client->dev;
1203
1204         /* Now, we do the remaining detection. */
1205
1206         /* The w8378?d may be stuck in some other bank than bank 0. This may
1207            make reading other information impossible. Specify a force=... or
1208            force_*=... parameter, and the Winbond will be reset to the right
1209            bank. */
1210         if (kind < 0) {
1211                 if (w83781d_read_value(data, W83781D_REG_CONFIG) & 0x80) {
1212                         dev_dbg(&adapter->dev, "Detection of w83781d chip "
1213                                 "failed at step 3\n");
1214                         err = -ENODEV;
1215                         goto ERROR2;
1216                 }
1217                 val1 = w83781d_read_value(data, W83781D_REG_BANK);
1218                 val2 = w83781d_read_value(data, W83781D_REG_CHIPMAN);
1219                 /* Check for Winbond or Asus ID if in bank 0 */
1220                 if ((!(val1 & 0x07)) &&
1221                     (((!(val1 & 0x80)) && (val2 != 0xa3) && (val2 != 0xc3))
1222                      || ((val1 & 0x80) && (val2 != 0x5c) && (val2 != 0x12)))) {
1223                         dev_dbg(&adapter->dev, "Detection of w83781d chip "
1224                                 "failed at step 4\n");
1225                         err = -ENODEV;
1226                         goto ERROR2;
1227                 }
1228                 /* If Winbond SMBus, check address at 0x48.
1229                    Asus doesn't support, except for as99127f rev.2 */
1230                 if ((!(val1 & 0x80) && (val2 == 0xa3)) ||
1231                     ((val1 & 0x80) && (val2 == 0x5c))) {
1232                         if (w83781d_read_value
1233                             (data, W83781D_REG_I2C_ADDR) != address) {
1234                                 dev_dbg(&adapter->dev, "Detection of w83781d "
1235                                         "chip failed at step 5\n");
1236                                 err = -ENODEV;
1237                                 goto ERROR2;
1238                         }
1239                 }
1240         }
1241
1242         /* We have either had a force parameter, or we have already detected the
1243            Winbond. Put it now into bank 0 and Vendor ID High Byte */
1244         w83781d_write_value(data, W83781D_REG_BANK,
1245                             (w83781d_read_value(data, W83781D_REG_BANK)
1246                              & 0x78) | 0x80);
1247
1248         /* Determine the chip type. */
1249         if (kind <= 0) {
1250                 /* get vendor ID */
1251                 val2 = w83781d_read_value(data, W83781D_REG_CHIPMAN);
1252                 if (val2 == 0x5c)
1253                         vendid = winbond;
1254                 else if (val2 == 0x12)
1255                         vendid = asus;
1256                 else {
1257                         dev_dbg(&adapter->dev, "w83781d chip vendor is "
1258                                 "neither Winbond nor Asus\n");
1259                         err = -ENODEV;
1260                         goto ERROR2;
1261                 }
1262
1263                 val1 = w83781d_read_value(data, W83781D_REG_WCHIPID);
1264                 if ((val1 == 0x10 || val1 == 0x11) && vendid == winbond)
1265                         kind = w83781d;
1266                 else if (val1 == 0x30 && vendid == winbond)
1267                         kind = w83782d;
1268                 else if (val1 == 0x40 && vendid == winbond && address == 0x2d)
1269                         kind = w83783s;
1270                 else if (val1 == 0x21 && vendid == winbond)
1271                         kind = w83627hf;
1272                 else if (val1 == 0x31 && address >= 0x28)
1273                         kind = as99127f;
1274                 else {
1275                         if (kind == 0)
1276                                 dev_warn(&adapter->dev, "Ignoring 'force' "
1277                                          "parameter for unknown chip at "
1278                                          "address 0x%02x\n", address);
1279                         err = -EINVAL;
1280                         goto ERROR2;
1281                 }
1282         }
1283
1284         if (kind == w83781d) {
1285                 client_name = "w83781d";
1286         } else if (kind == w83782d) {
1287                 client_name = "w83782d";
1288         } else if (kind == w83783s) {
1289                 client_name = "w83783s";
1290         } else if (kind == w83627hf) {
1291                 client_name = "w83627hf";
1292         } else if (kind == as99127f) {
1293                 client_name = "as99127f";
1294         }
1295
1296         /* Fill in the remaining client fields and put into the global list */
1297         strlcpy(client->name, client_name, I2C_NAME_SIZE);
1298         data->type = kind;
1299
1300         /* Tell the I2C layer a new client has arrived */
1301         if ((err = i2c_attach_client(client)))
1302                 goto ERROR2;
1303
1304         /* attach secondary i2c lm75-like clients */
1305         if ((err = w83781d_detect_subclients(adapter, address,
1306                         kind, client)))
1307                 goto ERROR3;
1308
1309         /* Initialize the chip */
1310         w83781d_init_device(dev);
1311
1312         /* Register sysfs hooks */
1313         err = w83781d_create_files(dev, kind, 0);
1314         if (err)
1315                 goto ERROR4;
1316
1317         data->hwmon_dev = hwmon_device_register(dev);
1318         if (IS_ERR(data->hwmon_dev)) {
1319                 err = PTR_ERR(data->hwmon_dev);
1320                 goto ERROR4;
1321         }
1322
1323         return 0;
1324
1325 ERROR4:
1326         sysfs_remove_group(&dev->kobj, &w83781d_group);
1327         sysfs_remove_group(&dev->kobj, &w83781d_group_opt);
1328
1329         if (data->lm75[1]) {
1330                 i2c_detach_client(data->lm75[1]);
1331                 kfree(data->lm75[1]);
1332         }
1333         if (data->lm75[0]) {
1334                 i2c_detach_client(data->lm75[0]);
1335                 kfree(data->lm75[0]);
1336         }
1337 ERROR3:
1338         i2c_detach_client(client);
1339 ERROR2:
1340         kfree(data);
1341 ERROR1:
1342         return err;
1343 }
1344
1345 static int
1346 w83781d_detach_client(struct i2c_client *client)
1347 {
1348         struct w83781d_data *data = i2c_get_clientdata(client);
1349         int err;
1350
1351         /* main client */
1352         if (data) {
1353                 hwmon_device_unregister(data->hwmon_dev);
1354                 sysfs_remove_group(&client->dev.kobj, &w83781d_group);
1355                 sysfs_remove_group(&client->dev.kobj, &w83781d_group_opt);
1356         }
1357
1358         if ((err = i2c_detach_client(client)))
1359                 return err;
1360
1361         /* main client */
1362         if (data)
1363                 kfree(data);
1364
1365         /* subclient */
1366         else
1367                 kfree(client);
1368
1369         return 0;
1370 }
1371
1372 static int __devinit
1373 w83781d_isa_probe(struct platform_device *pdev)
1374 {
1375         int err, reg;
1376         struct w83781d_data *data;
1377         struct resource *res;
1378         const char *name;
1379
1380         /* Reserve the ISA region */
1381         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1382         if (!request_region(res->start, W83781D_EXTENT, "w83781d")) {
1383                 err = -EBUSY;
1384                 goto exit;
1385         }
1386
1387         if (!(data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL))) {
1388                 err = -ENOMEM;
1389                 goto exit_release_region;
1390         }
1391         mutex_init(&data->lock);
1392         data->client.addr = res->start;
1393         i2c_set_clientdata(&data->client, data);
1394         platform_set_drvdata(pdev, data);
1395
1396         reg = w83781d_read_value(data, W83781D_REG_WCHIPID);
1397         switch (reg) {
1398         case 0x21:
1399                 data->type = w83627hf;
1400                 name = "w83627hf";
1401                 break;
1402         case 0x30:
1403                 data->type = w83782d;
1404                 name = "w83782d";
1405                 break;
1406         default:
1407                 data->type = w83781d;
1408                 name = "w83781d";
1409         }
1410         strlcpy(data->client.name, name, I2C_NAME_SIZE);
1411
1412         /* Initialize the W83781D chip */
1413         w83781d_init_device(&pdev->dev);
1414
1415         /* Register sysfs hooks */
1416         err = w83781d_create_files(&pdev->dev, data->type, 1);
1417         if (err)
1418                 goto exit_remove_files;
1419
1420         data->hwmon_dev = hwmon_device_register(&pdev->dev);
1421         if (IS_ERR(data->hwmon_dev)) {
1422                 err = PTR_ERR(data->hwmon_dev);
1423                 goto exit_remove_files;
1424         }
1425
1426         return 0;
1427
1428  exit_remove_files:
1429         sysfs_remove_group(&pdev->dev.kobj, &w83781d_group);
1430         sysfs_remove_group(&pdev->dev.kobj, &w83781d_group_opt);
1431         device_remove_file(&pdev->dev, &dev_attr_name);
1432         kfree(data);
1433  exit_release_region:
1434         release_region(res->start, W83781D_EXTENT);
1435  exit:
1436         return err;
1437 }
1438
1439 static int __devexit
1440 w83781d_isa_remove(struct platform_device *pdev)
1441 {
1442         struct w83781d_data *data = platform_get_drvdata(pdev);
1443
1444         hwmon_device_unregister(data->hwmon_dev);
1445         sysfs_remove_group(&pdev->dev.kobj, &w83781d_group);
1446         sysfs_remove_group(&pdev->dev.kobj, &w83781d_group_opt);
1447         device_remove_file(&pdev->dev, &dev_attr_name);
1448         release_region(data->client.addr, W83781D_EXTENT);
1449         kfree(data);
1450
1451         return 0;
1452 }
1453
1454 /* The SMBus locks itself, usually, but nothing may access the Winbond between
1455    bank switches. ISA access must always be locked explicitly!
1456    We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks,
1457    would slow down the W83781D access and should not be necessary.
1458    There are some ugly typecasts here, but the good news is - they should
1459    nowhere else be necessary! */
1460 static int
1461 w83781d_read_value(struct w83781d_data *data, u16 reg)
1462 {
1463         struct i2c_client *client = &data->client;
1464         int res, word_sized, bank;
1465         struct i2c_client *cl;
1466
1467         mutex_lock(&data->lock);
1468         if (!client->driver) { /* ISA device */
1469                 word_sized = (((reg & 0xff00) == 0x100)
1470                               || ((reg & 0xff00) == 0x200))
1471                     && (((reg & 0x00ff) == 0x50)
1472                         || ((reg & 0x00ff) == 0x53)
1473                         || ((reg & 0x00ff) == 0x55));
1474                 if (reg & 0xff00) {
1475                         outb_p(W83781D_REG_BANK,
1476                                client->addr + W83781D_ADDR_REG_OFFSET);
1477                         outb_p(reg >> 8,
1478                                client->addr + W83781D_DATA_REG_OFFSET);
1479                 }
1480                 outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
1481                 res = inb_p(client->addr + W83781D_DATA_REG_OFFSET);
1482                 if (word_sized) {
1483                         outb_p((reg & 0xff) + 1,
1484                                client->addr + W83781D_ADDR_REG_OFFSET);
1485                         res =
1486                             (res << 8) + inb_p(client->addr +
1487                                                W83781D_DATA_REG_OFFSET);
1488                 }
1489                 if (reg & 0xff00) {
1490                         outb_p(W83781D_REG_BANK,
1491                                client->addr + W83781D_ADDR_REG_OFFSET);
1492                         outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
1493                 }
1494         } else {
1495                 bank = (reg >> 8) & 0x0f;
1496                 if (bank > 2)
1497                         /* switch banks */
1498                         i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1499                                                   bank);
1500                 if (bank == 0 || bank > 2) {
1501                         res = i2c_smbus_read_byte_data(client, reg & 0xff);
1502                 } else {
1503                         /* switch to subclient */
1504                         cl = data->lm75[bank - 1];
1505                         /* convert from ISA to LM75 I2C addresses */
1506                         switch (reg & 0xff) {
1507                         case 0x50:      /* TEMP */
1508                                 res = swab16(i2c_smbus_read_word_data(cl, 0));
1509                                 break;
1510                         case 0x52:      /* CONFIG */
1511                                 res = i2c_smbus_read_byte_data(cl, 1);
1512                                 break;
1513                         case 0x53:      /* HYST */
1514                                 res = swab16(i2c_smbus_read_word_data(cl, 2));
1515                                 break;
1516                         case 0x55:      /* OVER */
1517                         default:
1518                                 res = swab16(i2c_smbus_read_word_data(cl, 3));
1519                                 break;
1520                         }
1521                 }
1522                 if (bank > 2)
1523                         i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1524         }
1525         mutex_unlock(&data->lock);
1526         return res;
1527 }
1528
1529 static int
1530 w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
1531 {
1532         struct i2c_client *client = &data->client;
1533         int word_sized, bank;
1534         struct i2c_client *cl;
1535
1536         mutex_lock(&data->lock);
1537         if (!client->driver) { /* ISA device */
1538                 word_sized = (((reg & 0xff00) == 0x100)
1539                               || ((reg & 0xff00) == 0x200))
1540                     && (((reg & 0x00ff) == 0x53)
1541                         || ((reg & 0x00ff) == 0x55));
1542                 if (reg & 0xff00) {
1543                         outb_p(W83781D_REG_BANK,
1544                                client->addr + W83781D_ADDR_REG_OFFSET);
1545                         outb_p(reg >> 8,
1546                                client->addr + W83781D_DATA_REG_OFFSET);
1547                 }
1548                 outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
1549                 if (word_sized) {
1550                         outb_p(value >> 8,
1551                                client->addr + W83781D_DATA_REG_OFFSET);
1552                         outb_p((reg & 0xff) + 1,
1553                                client->addr + W83781D_ADDR_REG_OFFSET);
1554                 }
1555                 outb_p(value & 0xff, client->addr + W83781D_DATA_REG_OFFSET);
1556                 if (reg & 0xff00) {
1557                         outb_p(W83781D_REG_BANK,
1558                                client->addr + W83781D_ADDR_REG_OFFSET);
1559                         outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
1560                 }
1561         } else {
1562                 bank = (reg >> 8) & 0x0f;
1563                 if (bank > 2)
1564                         /* switch banks */
1565                         i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
1566                                                   bank);
1567                 if (bank == 0 || bank > 2) {
1568                         i2c_smbus_write_byte_data(client, reg & 0xff,
1569                                                   value & 0xff);
1570                 } else {
1571                         /* switch to subclient */
1572                         cl = data->lm75[bank - 1];
1573                         /* convert from ISA to LM75 I2C addresses */
1574                         switch (reg & 0xff) {
1575                         case 0x52:      /* CONFIG */
1576                                 i2c_smbus_write_byte_data(cl, 1, value & 0xff);
1577                                 break;
1578                         case 0x53:      /* HYST */
1579                                 i2c_smbus_write_word_data(cl, 2, swab16(value));
1580                                 break;
1581                         case 0x55:      /* OVER */
1582                                 i2c_smbus_write_word_data(cl, 3, swab16(value));
1583                                 break;
1584                         }
1585                 }
1586                 if (bank > 2)
1587                         i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
1588         }
1589         mutex_unlock(&data->lock);
1590         return 0;
1591 }
1592
1593 static void
1594 w83781d_init_device(struct device *dev)
1595 {
1596         struct w83781d_data *data = dev_get_drvdata(dev);
1597         int i, p;
1598         int type = data->type;
1599         u8 tmp;
1600
1601         if (type == w83627hf)
1602                 dev_info(dev, "The W83627HF chip is better supported by the "
1603                          "w83627hf driver, support will be dropped from the "
1604                          "w83781d driver soon\n");
1605
1606         if (reset && type != as99127f) { /* this resets registers we don't have
1607                                            documentation for on the as99127f */
1608                 /* Resetting the chip has been the default for a long time,
1609                    but it causes the BIOS initializations (fan clock dividers,
1610                    thermal sensor types...) to be lost, so it is now optional.
1611                    It might even go away if nobody reports it as being useful,
1612                    as I see very little reason why this would be needed at
1613                    all. */
1614                 dev_info(dev, "If reset=1 solved a problem you were "
1615                          "having, please report!\n");
1616
1617                 /* save these registers */
1618                 i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
1619                 p = w83781d_read_value(data, W83781D_REG_PWMCLK12);
1620                 /* Reset all except Watchdog values and last conversion values
1621                    This sets fan-divs to 2, among others */
1622                 w83781d_write_value(data, W83781D_REG_CONFIG, 0x80);
1623                 /* Restore the registers and disable power-on abnormal beep.
1624                    This saves FAN 1/2/3 input/output values set by BIOS. */
1625                 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
1626                 w83781d_write_value(data, W83781D_REG_PWMCLK12, p);
1627                 /* Disable master beep-enable (reset turns it on).
1628                    Individual beep_mask should be reset to off but for some reason
1629                    disabling this bit helps some people not get beeped */
1630                 w83781d_write_value(data, W83781D_REG_BEEP_INTS2, 0);
1631         }
1632
1633         /* Disable power-on abnormal beep, as advised by the datasheet.
1634            Already done if reset=1. */
1635         if (init && !reset && type != as99127f) {
1636                 i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG);
1637                 w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
1638         }
1639
1640         data->vrm = vid_which_vrm();
1641
1642         if ((type != w83781d) && (type != as99127f)) {
1643                 tmp = w83781d_read_value(data, W83781D_REG_SCFG1);
1644                 for (i = 1; i <= 3; i++) {
1645                         if (!(tmp & BIT_SCFG1[i - 1])) {
1646                                 data->sens[i - 1] = 4;
1647                         } else {
1648                                 if (w83781d_read_value
1649                                     (data,
1650                                      W83781D_REG_SCFG2) & BIT_SCFG2[i - 1])
1651                                         data->sens[i - 1] = 1;
1652                                 else
1653                                         data->sens[i - 1] = 2;
1654                         }
1655                         if (type == w83783s && i == 2)
1656                                 break;
1657                 }
1658         }
1659
1660         if (init && type != as99127f) {
1661                 /* Enable temp2 */
1662                 tmp = w83781d_read_value(data, W83781D_REG_TEMP2_CONFIG);
1663                 if (tmp & 0x01) {
1664                         dev_warn(dev, "Enabling temp2, readings "
1665                                  "might not make sense\n");
1666                         w83781d_write_value(data, W83781D_REG_TEMP2_CONFIG,
1667                                 tmp & 0xfe);
1668                 }
1669
1670                 /* Enable temp3 */
1671                 if (type != w83783s) {
1672                         tmp = w83781d_read_value(data,
1673                                 W83781D_REG_TEMP3_CONFIG);
1674                         if (tmp & 0x01) {
1675                                 dev_warn(dev, "Enabling temp3, "
1676                                          "readings might not make sense\n");
1677                                 w83781d_write_value(data,
1678                                         W83781D_REG_TEMP3_CONFIG, tmp & 0xfe);
1679                         }
1680                 }
1681         }
1682
1683         /* Start monitoring */
1684         w83781d_write_value(data, W83781D_REG_CONFIG,
1685                             (w83781d_read_value(data,
1686                                                 W83781D_REG_CONFIG) & 0xf7)
1687                             | 0x01);
1688
1689         /* A few vars need to be filled upon startup */
1690         for (i = 0; i < 3; i++) {
1691                 data->fan_min[i] = w83781d_read_value(data,
1692                                         W83781D_REG_FAN_MIN(i));
1693         }
1694
1695         mutex_init(&data->update_lock);
1696 }
1697
1698 static struct w83781d_data *w83781d_update_device(struct device *dev)
1699 {
1700         struct w83781d_data *data = dev_get_drvdata(dev);
1701         struct i2c_client *client = &data->client;
1702         int i;
1703
1704         mutex_lock(&data->update_lock);
1705
1706         if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
1707             || !data->valid) {
1708                 dev_dbg(dev, "Starting device update\n");
1709
1710                 for (i = 0; i <= 8; i++) {
1711                         if (data->type == w83783s && i == 1)
1712                                 continue;       /* 783S has no in1 */
1713                         data->in[i] =
1714                             w83781d_read_value(data, W83781D_REG_IN(i));
1715                         data->in_min[i] =
1716                             w83781d_read_value(data, W83781D_REG_IN_MIN(i));
1717                         data->in_max[i] =
1718                             w83781d_read_value(data, W83781D_REG_IN_MAX(i));
1719                         if ((data->type != w83782d)
1720                             && (data->type != w83627hf) && (i == 6))
1721                                 break;
1722                 }
1723                 for (i = 0; i < 3; i++) {
1724                         data->fan[i] =
1725                             w83781d_read_value(data, W83781D_REG_FAN(i));
1726                         data->fan_min[i] =
1727                             w83781d_read_value(data, W83781D_REG_FAN_MIN(i));
1728                 }
1729                 if (data->type != w83781d && data->type != as99127f) {
1730                         for (i = 0; i < 4; i++) {
1731                                 data->pwm[i] =
1732                                     w83781d_read_value(data,
1733                                                        W83781D_REG_PWM[i]);
1734                                 if ((data->type != w83782d || !client->driver)
1735                                     && i == 1)
1736                                         break;
1737                         }
1738                         /* Only PWM2 can be disabled */
1739                         data->pwm2_enable = (w83781d_read_value(data,
1740                                               W83781D_REG_PWMCLK12) & 0x08) >> 3;
1741                 }
1742
1743                 data->temp = w83781d_read_value(data, W83781D_REG_TEMP(1));
1744                 data->temp_max =
1745                     w83781d_read_value(data, W83781D_REG_TEMP_OVER(1));
1746                 data->temp_max_hyst =
1747                     w83781d_read_value(data, W83781D_REG_TEMP_HYST(1));
1748                 data->temp_add[0] =
1749                     w83781d_read_value(data, W83781D_REG_TEMP(2));
1750                 data->temp_max_add[0] =
1751                     w83781d_read_value(data, W83781D_REG_TEMP_OVER(2));
1752                 data->temp_max_hyst_add[0] =
1753                     w83781d_read_value(data, W83781D_REG_TEMP_HYST(2));
1754                 if (data->type != w83783s) {
1755                         data->temp_add[1] =
1756                             w83781d_read_value(data, W83781D_REG_TEMP(3));
1757                         data->temp_max_add[1] =
1758                             w83781d_read_value(data,
1759                                                W83781D_REG_TEMP_OVER(3));
1760                         data->temp_max_hyst_add[1] =
1761                             w83781d_read_value(data,
1762                                                W83781D_REG_TEMP_HYST(3));
1763                 }
1764                 i = w83781d_read_value(data, W83781D_REG_VID_FANDIV);
1765                 data->vid = i & 0x0f;
1766                 data->vid |= (w83781d_read_value(data,
1767                                         W83781D_REG_CHIPID) & 0x01) << 4;
1768                 data->fan_div[0] = (i >> 4) & 0x03;
1769                 data->fan_div[1] = (i >> 6) & 0x03;
1770                 data->fan_div[2] = (w83781d_read_value(data,
1771                                         W83781D_REG_PIN) >> 6) & 0x03;
1772                 if ((data->type != w83781d) && (data->type != as99127f)) {
1773                         i = w83781d_read_value(data, W83781D_REG_VBAT);
1774                         data->fan_div[0] |= (i >> 3) & 0x04;
1775                         data->fan_div[1] |= (i >> 4) & 0x04;
1776                         data->fan_div[2] |= (i >> 5) & 0x04;
1777                 }
1778                 if ((data->type == w83782d) || (data->type == w83627hf)) {
1779                         data->alarms = w83781d_read_value(data,
1780                                                 W83782D_REG_ALARM1)
1781                                      | (w83781d_read_value(data,
1782                                                 W83782D_REG_ALARM2) << 8)
1783                                      | (w83781d_read_value(data,
1784                                                 W83782D_REG_ALARM3) << 16);
1785                 } else if (data->type == w83783s) {
1786                         data->alarms = w83781d_read_value(data,
1787                                                 W83782D_REG_ALARM1)
1788                                      | (w83781d_read_value(data,
1789                                                 W83782D_REG_ALARM2) << 8);
1790                 } else {
1791                         /* No real-time status registers, fall back to
1792                            interrupt status registers */
1793                         data->alarms = w83781d_read_value(data,
1794                                                 W83781D_REG_ALARM1)
1795                                      | (w83781d_read_value(data,
1796                                                 W83781D_REG_ALARM2) << 8);
1797                 }
1798                 i = w83781d_read_value(data, W83781D_REG_BEEP_INTS2);
1799                 data->beep_enable = i >> 7;
1800                 data->beep_mask = ((i & 0x7f) << 8) +
1801                     w83781d_read_value(data, W83781D_REG_BEEP_INTS1);
1802                 if ((data->type != w83781d) && (data->type != as99127f)) {
1803                         data->beep_mask |=
1804                             w83781d_read_value(data,
1805                                                W83781D_REG_BEEP_INTS3) << 16;
1806                 }
1807                 data->last_updated = jiffies;
1808                 data->valid = 1;
1809         }
1810
1811         mutex_unlock(&data->update_lock);
1812
1813         return data;
1814 }
1815
1816 /* return 1 if a supported chip is found, 0 otherwise */
1817 static int __init
1818 w83781d_isa_found(unsigned short address)
1819 {
1820         int val, save, found = 0;
1821
1822         if (!request_region(address, W83781D_EXTENT, "w83781d"))
1823                 return 0;
1824
1825 #define REALLY_SLOW_IO
1826         /* We need the timeouts for at least some W83781D-like
1827            chips. But only if we read 'undefined' registers. */
1828         val = inb_p(address + 1);
1829         if (inb_p(address + 2) != val
1830          || inb_p(address + 3) != val
1831          || inb_p(address + 7) != val) {
1832                 pr_debug("w83781d: Detection failed at step 1\n");
1833                 goto release;
1834         }
1835 #undef REALLY_SLOW_IO
1836
1837         /* We should be able to change the 7 LSB of the address port. The
1838            MSB (busy flag) should be clear initially, set after the write. */
1839         save = inb_p(address + W83781D_ADDR_REG_OFFSET);
1840         if (save & 0x80) {
1841                 pr_debug("w83781d: Detection failed at step 2\n");
1842                 goto release;
1843         }
1844         val = ~save & 0x7f;
1845         outb_p(val, address + W83781D_ADDR_REG_OFFSET);
1846         if (inb_p(address + W83781D_ADDR_REG_OFFSET) != (val | 0x80)) {
1847                 outb_p(save, address + W83781D_ADDR_REG_OFFSET);
1848                 pr_debug("w83781d: Detection failed at step 3\n");
1849                 goto release;
1850         }
1851
1852         /* We found a device, now see if it could be a W83781D */
1853         outb_p(W83781D_REG_CONFIG, address + W83781D_ADDR_REG_OFFSET);
1854         val = inb_p(address + W83781D_DATA_REG_OFFSET);
1855         if (val & 0x80) {
1856                 pr_debug("w83781d: Detection failed at step 4\n");
1857                 goto release;
1858         }
1859         outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
1860         save = inb_p(address + W83781D_DATA_REG_OFFSET);
1861         outb_p(W83781D_REG_CHIPMAN, address + W83781D_ADDR_REG_OFFSET);
1862         val = inb_p(address + W83781D_DATA_REG_OFFSET);
1863         if ((!(save & 0x80) && (val != 0xa3))
1864          || ((save & 0x80) && (val != 0x5c))) {
1865                 pr_debug("w83781d: Detection failed at step 5\n");
1866                 goto release;
1867         }
1868         outb_p(W83781D_REG_I2C_ADDR, address + W83781D_ADDR_REG_OFFSET);
1869         val = inb_p(address + W83781D_DATA_REG_OFFSET);
1870         if (val < 0x03 || val > 0x77) { /* Not a valid I2C address */
1871                 pr_debug("w83781d: Detection failed at step 6\n");
1872                 goto release;
1873         }
1874
1875         /* The busy flag should be clear again */
1876         if (inb_p(address + W83781D_ADDR_REG_OFFSET) & 0x80) {
1877                 pr_debug("w83781d: Detection failed at step 7\n");
1878                 goto release;
1879         }
1880
1881         /* Determine the chip type */
1882         outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET);
1883         save = inb_p(address + W83781D_DATA_REG_OFFSET);
1884         outb_p(save & 0xf8, address + W83781D_DATA_REG_OFFSET);
1885         outb_p(W83781D_REG_WCHIPID, address + W83781D_ADDR_REG_OFFSET);
1886         val = inb_p(address + W83781D_DATA_REG_OFFSET);
1887         if ((val & 0xfe) == 0x10        /* W83781D */
1888          || val == 0x30                 /* W83782D */
1889          || val == 0x21)                /* W83627HF */
1890                 found = 1;
1891
1892         if (found)
1893                 pr_info("w83781d: Found a %s chip at %#x\n",
1894                         val == 0x21 ? "W83627HF" :
1895                         val == 0x30 ? "W83782D" : "W83781D", (int)address);
1896
1897  release:
1898         release_region(address, W83781D_EXTENT);
1899         return found;
1900 }
1901
1902 static int __init
1903 w83781d_isa_device_add(unsigned short address)
1904 {
1905         struct resource res = {
1906                 .start  = address,
1907                 .end    = address + W83781D_EXTENT - 1,
1908                 .name   = "w83781d",
1909                 .flags  = IORESOURCE_IO,
1910         };
1911         int err;
1912
1913         pdev = platform_device_alloc("w83781d", address);
1914         if (!pdev) {
1915                 err = -ENOMEM;
1916                 printk(KERN_ERR "w83781d: Device allocation failed\n");
1917                 goto exit;
1918         }
1919
1920         err = platform_device_add_resources(pdev, &res, 1);
1921         if (err) {
1922                 printk(KERN_ERR "w83781d: Device resource addition failed "
1923                        "(%d)\n", err);
1924                 goto exit_device_put;
1925         }
1926
1927         err = platform_device_add(pdev);
1928         if (err) {
1929                 printk(KERN_ERR "w83781d: Device addition failed (%d)\n",
1930                        err);
1931                 goto exit_device_put;
1932         }
1933
1934         return 0;
1935
1936  exit_device_put:
1937         platform_device_put(pdev);
1938  exit:
1939         pdev = NULL;
1940         return err;
1941 }
1942
1943 static int __init
1944 sensors_w83781d_init(void)
1945 {
1946         int res;
1947
1948         res = i2c_add_driver(&w83781d_driver);
1949         if (res)
1950                 goto exit;
1951
1952         if (w83781d_isa_found(isa_address)) {
1953                 res = platform_driver_register(&w83781d_isa_driver);
1954                 if (res)
1955                         goto exit_unreg_i2c_driver;
1956
1957                 /* Sets global pdev as a side effect */
1958                 res = w83781d_isa_device_add(isa_address);
1959                 if (res)
1960                         goto exit_unreg_isa_driver;
1961         }
1962
1963         return 0;
1964
1965  exit_unreg_isa_driver:
1966         platform_driver_unregister(&w83781d_isa_driver);
1967  exit_unreg_i2c_driver:
1968         i2c_del_driver(&w83781d_driver);
1969  exit:
1970         return res;
1971 }
1972
1973 static void __exit
1974 sensors_w83781d_exit(void)
1975 {
1976         if (pdev) {
1977                 platform_device_unregister(pdev);
1978                 platform_driver_unregister(&w83781d_isa_driver);
1979         }
1980         i2c_del_driver(&w83781d_driver);
1981 }
1982
1983 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
1984               "Philip Edelbrock <phil@netroedge.com>, "
1985               "and Mark Studebaker <mdsxyz123@yahoo.com>");
1986 MODULE_DESCRIPTION("W83781D driver");
1987 MODULE_LICENSE("GPL");
1988
1989 module_init(sensors_w83781d_init);
1990 module_exit(sensors_w83781d_exit);