drivers/hwmon/pc87360.c

   1 /*
   2  *  pc87360.c - Part of lm_sensors, Linux kernel modules
   3  *              for hardware monitoring
   4  *  Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
   5  *
   6  *  Copied from smsc47m1.c:
   7  *  Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
   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  *  Supports the following chips:
  24  *
  25  *  Chip        #vin    #fan    #pwm    #temp   devid
  26  *  PC87360     -       2       2       -       0xE1
  27  *  PC87363     -       2       2       -       0xE8
  28  *  PC87364     -       3       3       -       0xE4
  29  *  PC87365     11      3       3       2       0xE5
  30  *  PC87366     11      3       3       3-4     0xE9
  31  *
  32  *  This driver assumes that no more than one chip is present, and one of
  33  *  the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
  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/i2c-vid.h>
  43 #include <linux/hwmon.h>
  44 #include <linux/err.h>
  45 #include <asm/io.h>
  46
  47 static u8 devid;
  48 static unsigned short address;
  49 static unsigned short extra_isa[3];
  50 static u8 confreg[4];
  51
  52 enum chips { any_chip, pc87360, pc87363, pc87364, pc87365, pc87366 };
  53
  54 static int init = 1;
  55 module_param(init, int, 0);
  56 MODULE_PARM_DESC(init,
  57  "Chip initialization level:\n"
  58  " 0: None\n"
  59  "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
  60  " 2: Forcibly enable all voltage and temperature channels, except in9\n"
  61  " 3: Forcibly enable all voltage and temperature channels, including in9");
  62
  63 /*
  64  * Super-I/O registers and operations
  65  */
  66
  67 #define DEV     0x07    /* Register: Logical device select */
  68 #define DEVID   0x20    /* Register: Device ID */
  69 #define ACT     0x30    /* Register: Device activation */
  70 #define BASE    0x60    /* Register: Base address */
  71
  72 #define FSCM    0x09    /* Logical device: fans */
  73 #define VLM     0x0d    /* Logical device: voltages */
  74 #define TMS     0x0e    /* Logical device: temperatures */
  75 static const u8 logdev[3] = { FSCM, VLM, TMS };
  76
  77 #define LD_FAN          0
  78 #define LD_IN           1
  79 #define LD_TEMP         2
  80
  81 static inline void superio_outb(int sioaddr, int reg, int val)
  82 {
  83         outb(reg, sioaddr);
  84         outb(val, sioaddr+1);
  85 }
  86
  87 static inline int superio_inb(int sioaddr, int reg)
  88 {
  89         outb(reg, sioaddr);
  90         return inb(sioaddr+1);
  91 }
  92
  93 static inline void superio_exit(int sioaddr)
  94 {
  95         outb(0x02, sioaddr);
  96         outb(0x02, sioaddr+1);
  97 }
  98
  99 /*
 100  * Logical devices
 101  */
 102
 103 #define PC87360_EXTENT          0x10
 104 #define PC87365_REG_BANK        0x09
 105 #define NO_BANK                 0xff
 106
 107 /*
 108  * Fan registers and conversions
 109  */
 110
 111 /* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
 112 #define PC87360_REG_PRESCALE(nr)        (0x00 + 2 * (nr))
 113 #define PC87360_REG_PWM(nr)             (0x01 + 2 * (nr))
 114 #define PC87360_REG_FAN_MIN(nr)         (0x06 + 3 * (nr))
 115 #define PC87360_REG_FAN(nr)             (0x07 + 3 * (nr))
 116 #define PC87360_REG_FAN_STATUS(nr)      (0x08 + 3 * (nr))
 117
 118 #define FAN_FROM_REG(val,div)           ((val) == 0 ? 0: \
 119                                          480000 / ((val)*(div)))
 120 #define FAN_TO_REG(val,div)             ((val) <= 100 ? 0 : \
 121                                          480000 / ((val)*(div)))
 122 #define FAN_DIV_FROM_REG(val)           (1 << ((val >> 5) & 0x03))
 123 #define FAN_STATUS_FROM_REG(val)        ((val) & 0x07)
 124
 125 #define FAN_CONFIG_MONITOR(val,nr)      (((val) >> (2 + nr * 3)) & 1)
 126 #define FAN_CONFIG_CONTROL(val,nr)      (((val) >> (3 + nr * 3)) & 1)
 127 #define FAN_CONFIG_INVERT(val,nr)       (((val) >> (4 + nr * 3)) & 1)
 128
 129 #define PWM_FROM_REG(val,inv)           ((inv) ? 255 - (val) : (val))
 130 static inline u8 PWM_TO_REG(int val, int inv)
 131 {
 132         if (inv)
 133                 val = 255 - val;
 134         if (val < 0)
 135                 return 0;
 136         if (val > 255)
 137                 return 255;
 138         return val;
 139 }
 140
 141 /*
 142  * Voltage registers and conversions
 143  */
 144
 145 #define PC87365_REG_IN_CONVRATE         0x07
 146 #define PC87365_REG_IN_CONFIG           0x08
 147 #define PC87365_REG_IN                  0x0B
 148 #define PC87365_REG_IN_MIN              0x0D
 149 #define PC87365_REG_IN_MAX              0x0C
 150 #define PC87365_REG_IN_STATUS           0x0A
 151 #define PC87365_REG_IN_ALARMS1          0x00
 152 #define PC87365_REG_IN_ALARMS2          0x01
 153 #define PC87365_REG_VID                 0x06
 154
 155 #define IN_FROM_REG(val,ref)            (((val) * (ref) + 128) / 256)
 156 #define IN_TO_REG(val,ref)              ((val) < 0 ? 0 : \
 157                                          (val)*256 >= (ref)*255 ? 255: \
 158                                          ((val) * 256 + (ref)/2) / (ref))
 159
 160 /*
 161  * Temperature registers and conversions
 162  */
 163
 164 #define PC87365_REG_TEMP_CONFIG         0x08
 165 #define PC87365_REG_TEMP                0x0B
 166 #define PC87365_REG_TEMP_MIN            0x0D
 167 #define PC87365_REG_TEMP_MAX            0x0C
 168 #define PC87365_REG_TEMP_CRIT           0x0E
 169 #define PC87365_REG_TEMP_STATUS         0x0A
 170 #define PC87365_REG_TEMP_ALARMS         0x00
 171
 172 #define TEMP_FROM_REG(val)              ((val) * 1000)
 173 #define TEMP_TO_REG(val)                ((val) < -55000 ? -55 : \
 174                                          (val) > 127000 ? 127 : \
 175                                          (val) < 0 ? ((val) - 500) / 1000 : \
 176                                          ((val) + 500) / 1000)
 177
 178 /*
 179  * Client data (each client gets its own)
 180  */
 181
 182 struct pc87360_data {
 183         struct i2c_client client;
 184         struct class_device *class_dev;
 185         struct semaphore lock;
 186         struct semaphore update_lock;
 187         char valid;             /* !=0 if following fields are valid */
 188         unsigned long last_updated;     /* In jiffies */
 189
 190         int address[3];
 191
 192         u8 fannr, innr, tempnr;
 193
 194         u8 fan[3];              /* Register value */
 195         u8 fan_min[3];          /* Register value */
 196         u8 fan_status[3];       /* Register value */
 197         u8 pwm[3];              /* Register value */
 198         u16 fan_conf;           /* Configuration register values, combined */
 199
 200         u16 in_vref;            /* 1 mV/bit */
 201         u8 in[14];              /* Register value */
 202         u8 in_min[14];          /* Register value */
 203         u8 in_max[14];          /* Register value */
 204         u8 in_crit[3];          /* Register value */
 205         u8 in_status[14];       /* Register value */
 206         u16 in_alarms;          /* Register values, combined, masked */
 207         u8 vid_conf;            /* Configuration register value */
 208         u8 vrm;
 209         u8 vid;                 /* Register value */
 210
 211         s8 temp[3];             /* Register value */
 212         s8 temp_min[3];         /* Register value */
 213         s8 temp_max[3];         /* Register value */
 214         s8 temp_crit[3];        /* Register value */
 215         u8 temp_status[3];      /* Register value */
 216         u8 temp_alarms;         /* Register value, masked */
 217 };
 218
 219 /*
 220  * Functions declaration
 221  */
 222
 223 static int pc87360_detect(struct i2c_adapter *adapter);
 224 static int pc87360_detach_client(struct i2c_client *client);
 225
 226 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
 227                               u8 reg);
 228 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
 229                                 u8 reg, u8 value);
 230 static void pc87360_init_client(struct i2c_client *client, int use_thermistors);
 231 static struct pc87360_data *pc87360_update_device(struct device *dev);
 232
 233 /*
 234  * Driver data (common to all clients)
 235  */
 236
 237 static struct i2c_driver pc87360_driver = {
 238         .owner          = THIS_MODULE,
 239         .name           = "pc87360",
 240         .attach_adapter = pc87360_detect,
 241         .detach_client  = pc87360_detach_client,
 242 };
 243
 244 /*
 245  * Sysfs stuff
 246  */
 247
 248 static ssize_t set_fan_min(struct device *dev, const char *buf,
 249         size_t count, int nr)
 250 {
 251         struct i2c_client *client = to_i2c_client(dev);
 252         struct pc87360_data *data = i2c_get_clientdata(client);
 253         long fan_min = simple_strtol(buf, NULL, 10);
 254
 255         down(&data->update_lock);
 256         fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[nr]));
 257
 258         /* If it wouldn't fit, change clock divisor */
 259         while (fan_min > 255
 260             && (data->fan_status[nr] & 0x60) != 0x60) {
 261                 fan_min >>= 1;
 262                 data->fan[nr] >>= 1;
 263                 data->fan_status[nr] += 0x20;
 264         }
 265         data->fan_min[nr] = fan_min > 255 ? 255 : fan_min;
 266         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(nr),
 267                             data->fan_min[nr]);
 268
 269         /* Write new divider, preserve alarm bits */
 270         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(nr),
 271                             data->fan_status[nr] & 0xF9);
 272         up(&data->update_lock);
 273
 274         return count;
 275 }
 276
 277 #define show_and_set_fan(offset) \
 278 static ssize_t show_fan##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
 279 { \
 280         struct pc87360_data *data = pc87360_update_device(dev); \
 281         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[offset-1], \
 282                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
 283 } \
 284 static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
 285 { \
 286         struct pc87360_data *data = pc87360_update_device(dev); \
 287         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[offset-1], \
 288                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
 289 } \
 290 static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \
 291 { \
 292         struct pc87360_data *data = pc87360_update_device(dev); \
 293         return sprintf(buf, "%u\n", \
 294                        FAN_DIV_FROM_REG(data->fan_status[offset-1])); \
 295 } \
 296 static ssize_t show_fan##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 297 { \
 298         struct pc87360_data *data = pc87360_update_device(dev); \
 299         return sprintf(buf, "%u\n", \
 300                        FAN_STATUS_FROM_REG(data->fan_status[offset-1])); \
 301 } \
 302 static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 303         size_t count) \
 304 { \
 305         return set_fan_min(dev, buf, count, offset-1); \
 306 } \
 307 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
 308         show_fan##offset##_input, NULL); \
 309 static DEVICE_ATTR(fan##offset##_min, S_IWUSR | S_IRUGO, \
 310         show_fan##offset##_min, set_fan##offset##_min); \
 311 static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \
 312         show_fan##offset##_div, NULL); \
 313 static DEVICE_ATTR(fan##offset##_status, S_IRUGO, \
 314         show_fan##offset##_status, NULL);
 315 show_and_set_fan(1)
 316 show_and_set_fan(2)
 317 show_and_set_fan(3)
 318
 319 #define show_and_set_pwm(offset) \
 320 static ssize_t show_pwm##offset(struct device *dev, struct device_attribute *attr, char *buf) \
 321 { \
 322         struct pc87360_data *data = pc87360_update_device(dev); \
 323         return sprintf(buf, "%u\n", \
 324                        PWM_FROM_REG(data->pwm[offset-1], \
 325                                     FAN_CONFIG_INVERT(data->fan_conf, \
 326                                                       offset-1))); \
 327 } \
 328 static ssize_t set_pwm##offset(struct device *dev, struct device_attribute *attr, const char *buf, \
 329         size_t count) \
 330 { \
 331         struct i2c_client *client = to_i2c_client(dev); \
 332         struct pc87360_data *data = i2c_get_clientdata(client); \
 333         long val = simple_strtol(buf, NULL, 10); \
 334  \
 335         down(&data->update_lock); \
 336         data->pwm[offset-1] = PWM_TO_REG(val, \
 337                               FAN_CONFIG_INVERT(data->fan_conf, offset-1)); \
 338         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(offset-1), \
 339                             data->pwm[offset-1]); \
 340         up(&data->update_lock); \
 341         return count; \
 342 } \
 343 static DEVICE_ATTR(pwm##offset, S_IWUSR | S_IRUGO, \
 344         show_pwm##offset, set_pwm##offset);
 345 show_and_set_pwm(1)
 346 show_and_set_pwm(2)
 347 show_and_set_pwm(3)
 348
 349 #define show_and_set_in(offset) \
 350 static ssize_t show_in##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
 351 { \
 352         struct pc87360_data *data = pc87360_update_device(dev); \
 353         return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \
 354                        data->in_vref)); \
 355 } \
 356 static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
 357 { \
 358         struct pc87360_data *data = pc87360_update_device(dev); \
 359         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \
 360                        data->in_vref)); \
 361 } \
 362 static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
 363 { \
 364         struct pc87360_data *data = pc87360_update_device(dev); \
 365         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \
 366                        data->in_vref)); \
 367 } \
 368 static ssize_t show_in##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 369 { \
 370         struct pc87360_data *data = pc87360_update_device(dev); \
 371         return sprintf(buf, "%u\n", data->in_status[offset]); \
 372 } \
 373 static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 374         size_t count) \
 375 { \
 376         struct i2c_client *client = to_i2c_client(dev); \
 377         struct pc87360_data *data = i2c_get_clientdata(client); \
 378         long val = simple_strtol(buf, NULL, 10); \
 379  \
 380         down(&data->update_lock); \
 381         data->in_min[offset] = IN_TO_REG(val, data->in_vref); \
 382         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MIN, \
 383                             data->in_min[offset]); \
 384         up(&data->update_lock); \
 385         return count; \
 386 } \
 387 static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
 388         size_t count) \
 389 { \
 390         struct i2c_client *client = to_i2c_client(dev); \
 391         struct pc87360_data *data = i2c_get_clientdata(client); \
 392         long val = simple_strtol(buf, NULL, 10); \
 393  \
 394         down(&data->update_lock); \
 395         data->in_max[offset] = IN_TO_REG(val, \
 396                                data->in_vref); \
 397         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MAX, \
 398                             data->in_max[offset]); \
 399         up(&data->update_lock); \
 400         return count; \
 401 } \
 402 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
 403         show_in##offset##_input, NULL); \
 404 static DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \
 405         show_in##offset##_min, set_in##offset##_min); \
 406 static DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \
 407         show_in##offset##_max, set_in##offset##_max); \
 408 static DEVICE_ATTR(in##offset##_status, S_IRUGO, \
 409         show_in##offset##_status, NULL);
 410 show_and_set_in(0)
 411 show_and_set_in(1)
 412 show_and_set_in(2)
 413 show_and_set_in(3)
 414 show_and_set_in(4)
 415 show_and_set_in(5)
 416 show_and_set_in(6)
 417 show_and_set_in(7)
 418 show_and_set_in(8)
 419 show_and_set_in(9)
 420 show_and_set_in(10)
 421
 422 #define show_and_set_therm(offset) \
 423 static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
 424 { \
 425         struct pc87360_data *data = pc87360_update_device(dev); \
 426         return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset+7], \
 427                        data->in_vref)); \
 428 } \
 429 static ssize_t show_temp##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
 430 { \
 431         struct pc87360_data *data = pc87360_update_device(dev); \
 432         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset+7], \
 433                        data->in_vref)); \
 434 } \
 435 static ssize_t show_temp##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
 436 { \
 437         struct pc87360_data *data = pc87360_update_device(dev); \
 438         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset+7], \
 439                        data->in_vref)); \
 440 } \
 441 static ssize_t show_temp##offset##_crit(struct device *dev, struct device_attribute *attr, char *buf) \
 442 { \
 443         struct pc87360_data *data = pc87360_update_device(dev); \
 444         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[offset-4], \
 445                        data->in_vref)); \
 446 } \
 447 static ssize_t show_temp##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 448 { \
 449         struct pc87360_data *data = pc87360_update_device(dev); \
 450         return sprintf(buf, "%u\n", data->in_status[offset+7]); \
 451 } \
 452 static ssize_t set_temp##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 453         size_t count) \
 454 { \
 455         struct i2c_client *client = to_i2c_client(dev); \
 456         struct pc87360_data *data = i2c_get_clientdata(client); \
 457         long val = simple_strtol(buf, NULL, 10); \
 458  \
 459         down(&data->update_lock); \
 460         data->in_min[offset+7] = IN_TO_REG(val, data->in_vref); \
 461         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MIN, \
 462                             data->in_min[offset+7]); \
 463         up(&data->update_lock); \
 464         return count; \
 465 } \
 466 static ssize_t set_temp##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
 467         size_t count) \
 468 { \
 469         struct i2c_client *client = to_i2c_client(dev); \
 470         struct pc87360_data *data = i2c_get_clientdata(client); \
 471         long val = simple_strtol(buf, NULL, 10); \
 472  \
 473         down(&data->update_lock); \
 474         data->in_max[offset+7] = IN_TO_REG(val, data->in_vref); \
 475         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MAX, \
 476                             data->in_max[offset+7]); \
 477         up(&data->update_lock); \
 478         return count; \
 479 } \
 480 static ssize_t set_temp##offset##_crit(struct device *dev, struct device_attribute *attr, const char *buf, \
 481         size_t count) \
 482 { \
 483         struct i2c_client *client = to_i2c_client(dev); \
 484         struct pc87360_data *data = i2c_get_clientdata(client); \
 485         long val = simple_strtol(buf, NULL, 10); \
 486  \
 487         down(&data->update_lock); \
 488         data->in_crit[offset-4] = IN_TO_REG(val, data->in_vref); \
 489         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_CRIT, \
 490                             data->in_crit[offset-4]); \
 491         up(&data->update_lock); \
 492         return count; \
 493 } \
 494 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
 495         show_temp##offset##_input, NULL); \
 496 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
 497         show_temp##offset##_min, set_temp##offset##_min); \
 498 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
 499         show_temp##offset##_max, set_temp##offset##_max); \
 500 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
 501         show_temp##offset##_crit, set_temp##offset##_crit); \
 502 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
 503         show_temp##offset##_status, NULL);
 504 show_and_set_therm(4)
 505 show_and_set_therm(5)
 506 show_and_set_therm(6)
 507
 508 static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
 509 {
 510         struct pc87360_data *data = pc87360_update_device(dev);
 511         return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
 512 }
 513 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
 514
 515 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
 516 {
 517         struct pc87360_data *data = pc87360_update_device(dev);
 518         return sprintf(buf, "%u\n", data->vrm);
 519 }
 520 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 521 {
 522         struct i2c_client *client = to_i2c_client(dev);
 523         struct pc87360_data *data = i2c_get_clientdata(client);
 524         data->vrm = simple_strtoul(buf, NULL, 10);
 525         return count;
 526 }
 527 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
 528
 529 static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr, char *buf)
 530 {
 531         struct pc87360_data *data = pc87360_update_device(dev);
 532         return sprintf(buf, "%u\n", data->in_alarms);
 533 }
 534 static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
 535
 536 #define show_and_set_temp(offset) \
 537 static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
 538 { \
 539         struct pc87360_data *data = pc87360_update_device(dev); \
 540         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \
 541 } \
 542 static ssize_t show_temp##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
 543 { \
 544         struct pc87360_data *data = pc87360_update_device(dev); \
 545         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[offset-1])); \
 546 } \
 547 static ssize_t show_temp##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
 548 { \
 549         struct pc87360_data *data = pc87360_update_device(dev); \
 550         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[offset-1])); \
 551 }\
 552 static ssize_t show_temp##offset##_crit(struct device *dev, struct device_attribute *attr, char *buf) \
 553 { \
 554         struct pc87360_data *data = pc87360_update_device(dev); \
 555         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[offset-1])); \
 556 }\
 557 static ssize_t show_temp##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 558 { \
 559         struct pc87360_data *data = pc87360_update_device(dev); \
 560         return sprintf(buf, "%d\n", data->temp_status[offset-1]); \
 561 }\
 562 static ssize_t set_temp##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 563         size_t count) \
 564 { \
 565         struct i2c_client *client = to_i2c_client(dev); \
 566         struct pc87360_data *data = i2c_get_clientdata(client); \
 567         long val = simple_strtol(buf, NULL, 10); \
 568  \
 569         down(&data->update_lock); \
 570         data->temp_min[offset-1] = TEMP_TO_REG(val); \
 571         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MIN, \
 572                             data->temp_min[offset-1]); \
 573         up(&data->update_lock); \
 574         return count; \
 575 } \
 576 static ssize_t set_temp##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
 577         size_t count) \
 578 { \
 579         struct i2c_client *client = to_i2c_client(dev); \
 580         struct pc87360_data *data = i2c_get_clientdata(client); \
 581         long val = simple_strtol(buf, NULL, 10); \
 582  \
 583         down(&data->update_lock); \
 584         data->temp_max[offset-1] = TEMP_TO_REG(val); \
 585         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MAX, \
 586                             data->temp_max[offset-1]); \
 587         up(&data->update_lock); \
 588         return count; \
 589 } \
 590 static ssize_t set_temp##offset##_crit(struct device *dev, struct device_attribute *attr, const char *buf, \
 591         size_t count) \
 592 { \
 593         struct i2c_client *client = to_i2c_client(dev); \
 594         struct pc87360_data *data = i2c_get_clientdata(client); \
 595         long val = simple_strtol(buf, NULL, 10); \
 596  \
 597         down(&data->update_lock); \
 598         data->temp_crit[offset-1] = TEMP_TO_REG(val); \
 599         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_CRIT, \
 600                             data->temp_crit[offset-1]); \
 601         up(&data->update_lock); \
 602         return count; \
 603 } \
 604 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
 605         show_temp##offset##_input, NULL); \
 606 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
 607         show_temp##offset##_min, set_temp##offset##_min); \
 608 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
 609         show_temp##offset##_max, set_temp##offset##_max); \
 610 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
 611         show_temp##offset##_crit, set_temp##offset##_crit); \
 612 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
 613         show_temp##offset##_status, NULL);
 614 show_and_set_temp(1)
 615 show_and_set_temp(2)
 616 show_and_set_temp(3)
 617
 618 static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *attr, char *buf)
 619 {
 620         struct pc87360_data *data = pc87360_update_device(dev);
 621         return sprintf(buf, "%u\n", data->temp_alarms);
 622 }
 623 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
 624
 625 /*
 626  * Device detection, registration and update
 627  */
 628
 629 static int pc87360_find(int sioaddr, u8 *devid, unsigned short *addresses)
 630 {
 631         u16 val;
 632         int i;
 633         int nrdev; /* logical device count */
 634
 635         /* No superio_enter */
 636
 637         /* Identify device */
 638         val = superio_inb(sioaddr, DEVID);
 639         switch (val) {
 640         case 0xE1: /* PC87360 */
 641         case 0xE8: /* PC87363 */
 642         case 0xE4: /* PC87364 */
 643                 nrdev = 1;
 644                 break;
 645         case 0xE5: /* PC87365 */
 646         case 0xE9: /* PC87366 */
 647                 nrdev = 3;
 648                 break;
 649         default:
 650                 superio_exit(sioaddr);
 651                 return -ENODEV;
 652         }
 653         /* Remember the device id */
 654         *devid = val;
 655
 656         for (i = 0; i < nrdev; i++) {
 657                 /* select logical device */
 658                 superio_outb(sioaddr, DEV, logdev[i]);
 659
 660                 val = superio_inb(sioaddr, ACT);
 661                 if (!(val & 0x01)) {
 662                         printk(KERN_INFO "pc87360: Device 0x%02x not "
 663                                "activated\n", logdev[i]);
 664                         continue;
 665                 }
 666
 667                 val = (superio_inb(sioaddr, BASE) << 8)
 668                     | superio_inb(sioaddr, BASE + 1);
 669                 if (!val) {
 670                         printk(KERN_INFO "pc87360: Base address not set for "
 671                                "device 0x%02x\n", logdev[i]);
 672                         continue;
 673                 }
 674
 675                 addresses[i] = val;
 676
 677                 if (i==0) { /* Fans */
 678                         confreg[0] = superio_inb(sioaddr, 0xF0);
 679                         confreg[1] = superio_inb(sioaddr, 0xF1);
 680
 681 #ifdef DEBUG
 682                         printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
 683                                "ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
 684                                (confreg[0]>>3)&1, (confreg[0]>>4)&1);
 685                         printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
 686                                "ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
 687                                (confreg[0]>>6)&1, (confreg[0]>>7)&1);
 688                         printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
 689                                "ctrl=%d inv=%d\n", confreg[1]&1,
 690                                (confreg[1]>>1)&1, (confreg[1]>>2)&1);
 691 #endif
 692                 } else if (i==1) { /* Voltages */
 693                         /* Are we using thermistors? */
 694                         if (*devid == 0xE9) { /* PC87366 */
 695                                 /* These registers are not logical-device
 696                                    specific, just that we won't need them if
 697                                    we don't use the VLM device */
 698                                 confreg[2] = superio_inb(sioaddr, 0x2B);
 699                                 confreg[3] = superio_inb(sioaddr, 0x25);
 700
 701                                 if (confreg[2] & 0x40) {
 702                                         printk(KERN_INFO "pc87360: Using "
 703                                                "thermistors for temperature "
 704                                                "monitoring\n");
 705                                 }
 706                                 if (confreg[3] & 0xE0) {
 707                                         printk(KERN_INFO "pc87360: VID "
 708                                                "inputs routed (mode %u)\n",
 709                                                confreg[3] >> 5);
 710                                 }
 711                         }
 712                 }
 713         }
 714
 715         superio_exit(sioaddr);
 716         return 0;
 717 }
 718
 719 static int pc87360_detect(struct i2c_adapter *adapter)
 720 {
 721         int i;
 722         struct i2c_client *new_client;
 723         struct pc87360_data *data;
 724         int err = 0;
 725         const char *name = "pc87360";
 726         int use_thermistors = 0;
 727
 728         if (!(data = kmalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
 729                 return -ENOMEM;
 730         memset(data, 0x00, sizeof(struct pc87360_data));
 731
 732         new_client = &data->client;
 733         i2c_set_clientdata(new_client, data);
 734         new_client->addr = address;
 735         init_MUTEX(&data->lock);
 736         new_client->adapter = adapter;
 737         new_client->driver = &pc87360_driver;
 738         new_client->flags = 0;
 739
 740         data->fannr = 2;
 741         data->innr = 0;
 742         data->tempnr = 0;
 743
 744         switch (devid) {
 745         case 0xe8:
 746                 name = "pc87363";
 747                 break;
 748         case 0xe4:
 749                 name = "pc87364";
 750                 data->fannr = 3;
 751                 break;
 752         case 0xe5:
 753                 name = "pc87365";
 754                 data->fannr = extra_isa[0] ? 3 : 0;
 755                 data->innr = extra_isa[1] ? 11 : 0;
 756                 data->tempnr = extra_isa[2] ? 2 : 0;
 757                 break;
 758         case 0xe9:
 759                 name = "pc87366";
 760                 data->fannr = extra_isa[0] ? 3 : 0;
 761                 data->innr = extra_isa[1] ? 14 : 0;
 762                 data->tempnr = extra_isa[2] ? 3 : 0;
 763                 break;
 764         }
 765
 766         strcpy(new_client->name, name);
 767         data->valid = 0;
 768         init_MUTEX(&data->update_lock);
 769
 770         for (i = 0; i < 3; i++) {
 771                 if (((data->address[i] = extra_isa[i]))
 772                  && !request_region(extra_isa[i], PC87360_EXTENT,
 773                                     pc87360_driver.name)) {
 774                         dev_err(&new_client->dev, "Region 0x%x-0x%x already "
 775                                 "in use!\n", extra_isa[i],
 776                                 extra_isa[i]+PC87360_EXTENT-1);
 777                         for (i--; i >= 0; i--)
 778                                 release_region(extra_isa[i], PC87360_EXTENT);
 779                         err = -EBUSY;
 780                         goto ERROR1;
 781                 }
 782         }
 783
 784         /* Retrieve the fans configuration from Super-I/O space */
 785         if (data->fannr)
 786                 data->fan_conf = confreg[0] | (confreg[1] << 8);
 787
 788         if ((err = i2c_attach_client(new_client)))
 789                 goto ERROR2;
 790
 791         /* Use the correct reference voltage
 792            Unless both the VLM and the TMS logical devices agree to
 793            use an external Vref, the internal one is used. */
 794         if (data->innr) {
 795                 i = pc87360_read_value(data, LD_IN, NO_BANK,
 796                                        PC87365_REG_IN_CONFIG);
 797                 if (data->tempnr) {
 798                         i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
 799                                                 PC87365_REG_TEMP_CONFIG);
 800                 }
 801                 data->in_vref = (i&0x02) ? 3025 : 2966;
 802                 dev_dbg(&new_client->dev, "Using %s reference voltage\n",
 803                         (i&0x02) ? "external" : "internal");
 804
 805                 data->vid_conf = confreg[3];
 806                 data->vrm = 90;
 807         }
 808
 809         /* Fan clock dividers may be needed before any data is read */
 810         for (i = 0; i < data->fannr; i++) {
 811                 if (FAN_CONFIG_MONITOR(data->fan_conf, i))
 812                         data->fan_status[i] = pc87360_read_value(data,
 813                                               LD_FAN, NO_BANK,
 814                                               PC87360_REG_FAN_STATUS(i));
 815         }
 816
 817         if (init > 0) {
 818                 if (devid == 0xe9 && data->address[1]) /* PC87366 */
 819                         use_thermistors = confreg[2] & 0x40;
 820
 821                 pc87360_init_client(new_client, use_thermistors);
 822         }
 823
 824         /* Register sysfs hooks */
 825         data->class_dev = hwmon_device_register(&new_client->dev);
 826         if (IS_ERR(data->class_dev)) {
 827                 err = PTR_ERR(data->class_dev);
 828                 goto ERROR3;
 829         }
 830
 831         if (data->innr) {
 832                 device_create_file(&new_client->dev, &dev_attr_in0_input);
 833                 device_create_file(&new_client->dev, &dev_attr_in1_input);
 834                 device_create_file(&new_client->dev, &dev_attr_in2_input);
 835                 device_create_file(&new_client->dev, &dev_attr_in3_input);
 836                 device_create_file(&new_client->dev, &dev_attr_in4_input);
 837                 device_create_file(&new_client->dev, &dev_attr_in5_input);
 838                 device_create_file(&new_client->dev, &dev_attr_in6_input);
 839                 device_create_file(&new_client->dev, &dev_attr_in7_input);
 840                 device_create_file(&new_client->dev, &dev_attr_in8_input);
 841                 device_create_file(&new_client->dev, &dev_attr_in9_input);
 842                 device_create_file(&new_client->dev, &dev_attr_in10_input);
 843                 device_create_file(&new_client->dev, &dev_attr_in0_min);
 844                 device_create_file(&new_client->dev, &dev_attr_in1_min);
 845                 device_create_file(&new_client->dev, &dev_attr_in2_min);
 846                 device_create_file(&new_client->dev, &dev_attr_in3_min);
 847                 device_create_file(&new_client->dev, &dev_attr_in4_min);
 848                 device_create_file(&new_client->dev, &dev_attr_in5_min);
 849                 device_create_file(&new_client->dev, &dev_attr_in6_min);
 850                 device_create_file(&new_client->dev, &dev_attr_in7_min);
 851                 device_create_file(&new_client->dev, &dev_attr_in8_min);
 852                 device_create_file(&new_client->dev, &dev_attr_in9_min);
 853                 device_create_file(&new_client->dev, &dev_attr_in10_min);
 854                 device_create_file(&new_client->dev, &dev_attr_in0_max);
 855                 device_create_file(&new_client->dev, &dev_attr_in1_max);
 856                 device_create_file(&new_client->dev, &dev_attr_in2_max);
 857                 device_create_file(&new_client->dev, &dev_attr_in3_max);
 858                 device_create_file(&new_client->dev, &dev_attr_in4_max);
 859                 device_create_file(&new_client->dev, &dev_attr_in5_max);
 860                 device_create_file(&new_client->dev, &dev_attr_in6_max);
 861                 device_create_file(&new_client->dev, &dev_attr_in7_max);
 862                 device_create_file(&new_client->dev, &dev_attr_in8_max);
 863                 device_create_file(&new_client->dev, &dev_attr_in9_max);
 864                 device_create_file(&new_client->dev, &dev_attr_in10_max);
 865                 device_create_file(&new_client->dev, &dev_attr_in0_status);
 866                 device_create_file(&new_client->dev, &dev_attr_in1_status);
 867                 device_create_file(&new_client->dev, &dev_attr_in2_status);
 868                 device_create_file(&new_client->dev, &dev_attr_in3_status);
 869                 device_create_file(&new_client->dev, &dev_attr_in4_status);
 870                 device_create_file(&new_client->dev, &dev_attr_in5_status);
 871                 device_create_file(&new_client->dev, &dev_attr_in6_status);
 872                 device_create_file(&new_client->dev, &dev_attr_in7_status);
 873                 device_create_file(&new_client->dev, &dev_attr_in8_status);
 874                 device_create_file(&new_client->dev, &dev_attr_in9_status);
 875                 device_create_file(&new_client->dev, &dev_attr_in10_status);
 876
 877                 device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
 878                 device_create_file(&new_client->dev, &dev_attr_vrm);
 879                 device_create_file(&new_client->dev, &dev_attr_alarms_in);
 880         }
 881
 882         if (data->tempnr) {
 883                 device_create_file(&new_client->dev, &dev_attr_temp1_input);
 884                 device_create_file(&new_client->dev, &dev_attr_temp2_input);
 885                 device_create_file(&new_client->dev, &dev_attr_temp1_min);
 886                 device_create_file(&new_client->dev, &dev_attr_temp2_min);
 887                 device_create_file(&new_client->dev, &dev_attr_temp1_max);
 888                 device_create_file(&new_client->dev, &dev_attr_temp2_max);
 889                 device_create_file(&new_client->dev, &dev_attr_temp1_crit);
 890                 device_create_file(&new_client->dev, &dev_attr_temp2_crit);
 891                 device_create_file(&new_client->dev, &dev_attr_temp1_status);
 892                 device_create_file(&new_client->dev, &dev_attr_temp2_status);
 893
 894                 device_create_file(&new_client->dev, &dev_attr_alarms_temp);
 895         }
 896         if (data->tempnr == 3) {
 897                 device_create_file(&new_client->dev, &dev_attr_temp3_input);
 898                 device_create_file(&new_client->dev, &dev_attr_temp3_min);
 899                 device_create_file(&new_client->dev, &dev_attr_temp3_max);
 900                 device_create_file(&new_client->dev, &dev_attr_temp3_crit);
 901                 device_create_file(&new_client->dev, &dev_attr_temp3_status);
 902         }
 903         if (data->innr == 14) {
 904                 device_create_file(&new_client->dev, &dev_attr_temp4_input);
 905                 device_create_file(&new_client->dev, &dev_attr_temp5_input);
 906                 device_create_file(&new_client->dev, &dev_attr_temp6_input);
 907                 device_create_file(&new_client->dev, &dev_attr_temp4_min);
 908                 device_create_file(&new_client->dev, &dev_attr_temp5_min);
 909                 device_create_file(&new_client->dev, &dev_attr_temp6_min);
 910                 device_create_file(&new_client->dev, &dev_attr_temp4_max);
 911                 device_create_file(&new_client->dev, &dev_attr_temp5_max);
 912                 device_create_file(&new_client->dev, &dev_attr_temp6_max);
 913                 device_create_file(&new_client->dev, &dev_attr_temp4_crit);
 914                 device_create_file(&new_client->dev, &dev_attr_temp5_crit);
 915                 device_create_file(&new_client->dev, &dev_attr_temp6_crit);
 916                 device_create_file(&new_client->dev, &dev_attr_temp4_status);
 917                 device_create_file(&new_client->dev, &dev_attr_temp5_status);
 918                 device_create_file(&new_client->dev, &dev_attr_temp6_status);
 919         }
 920
 921         if (data->fannr) {
 922                 if (FAN_CONFIG_MONITOR(data->fan_conf, 0)) {
 923                         device_create_file(&new_client->dev,
 924                                            &dev_attr_fan1_input);
 925                         device_create_file(&new_client->dev,
 926                                            &dev_attr_fan1_min);
 927                         device_create_file(&new_client->dev,
 928                                            &dev_attr_fan1_div);
 929                         device_create_file(&new_client->dev,
 930                                            &dev_attr_fan1_status);
 931                 }
 932
 933                 if (FAN_CONFIG_MONITOR(data->fan_conf, 1)) {
 934                         device_create_file(&new_client->dev,
 935                                            &dev_attr_fan2_input);
 936                         device_create_file(&new_client->dev,
 937                                            &dev_attr_fan2_min);
 938                         device_create_file(&new_client->dev,
 939                                            &dev_attr_fan2_div);
 940                         device_create_file(&new_client->dev,
 941                                            &dev_attr_fan2_status);
 942                 }
 943
 944                 if (FAN_CONFIG_CONTROL(data->fan_conf, 0))
 945                         device_create_file(&new_client->dev, &dev_attr_pwm1);
 946                 if (FAN_CONFIG_CONTROL(data->fan_conf, 1))
 947                         device_create_file(&new_client->dev, &dev_attr_pwm2);
 948         }
 949         if (data->fannr == 3) {
 950                 if (FAN_CONFIG_MONITOR(data->fan_conf, 2)) {
 951                         device_create_file(&new_client->dev,
 952                                            &dev_attr_fan3_input);
 953                         device_create_file(&new_client->dev,
 954                                            &dev_attr_fan3_min);
 955                         device_create_file(&new_client->dev,
 956                                            &dev_attr_fan3_div);
 957                         device_create_file(&new_client->dev,
 958                                            &dev_attr_fan3_status);
 959                 }
 960
 961                 if (FAN_CONFIG_CONTROL(data->fan_conf, 2))
 962                         device_create_file(&new_client->dev, &dev_attr_pwm3);
 963         }
 964
 965         return 0;
 966
 967 ERROR3:
 968         i2c_detach_client(new_client);
 969 ERROR2:
 970         for (i = 0; i < 3; i++) {
 971                 if (data->address[i]) {
 972                         release_region(data->address[i], PC87360_EXTENT);
 973                 }
 974         }
 975 ERROR1:
 976         kfree(data);
 977         return err;
 978 }
 979
 980 static int pc87360_detach_client(struct i2c_client *client)
 981 {
 982         struct pc87360_data *data = i2c_get_clientdata(client);
 983         int i;
 984
 985         hwmon_device_unregister(data->class_dev);
 986
 987         if ((i = i2c_detach_client(client)))
 988                 return i;
 989
 990         for (i = 0; i < 3; i++) {
 991                 if (data->address[i]) {
 992                         release_region(data->address[i], PC87360_EXTENT);
 993                 }
 994         }
 995         kfree(data);
 996
 997         return 0;
 998 }
 999
1000 /* ldi is the logical device index
1001    bank is for voltages and temperatures only */
1002 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1003                               u8 reg)
1004 {
1005         int res;
1006
1007         down(&(data->lock));
1008         if (bank != NO_BANK)
1009                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1010         res = inb_p(data->address[ldi] + reg);
1011         up(&(data->lock));
1012
1013         return res;
1014 }
1015
1016 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1017                                 u8 reg, u8 value)
1018 {
1019         down(&(data->lock));
1020         if (bank != NO_BANK)
1021                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1022         outb_p(value, data->address[ldi] + reg);
1023         up(&(data->lock));
1024 }
1025
1026 static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
1027 {
1028         struct pc87360_data *data = i2c_get_clientdata(client);
1029         int i, nr;
1030         const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1031         const u8 init_temp[3] = { 2, 2, 1 };
1032         u8 reg;
1033
1034         if (init >= 2 && data->innr) {
1035                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1036                                          PC87365_REG_IN_CONVRATE);
1037                 dev_info(&client->dev, "VLM conversion set to "
1038                          "1s period, 160us delay\n");
1039                 pc87360_write_value(data, LD_IN, NO_BANK,
1040                                     PC87365_REG_IN_CONVRATE,
1041                                     (reg & 0xC0) | 0x11);
1042         }
1043
1044         nr = data->innr < 11 ? data->innr : 11;
1045         for (i=0; i<nr; i++) {
1046                 if (init >= init_in[i]) {
1047                         /* Forcibly enable voltage channel */
1048                         reg = pc87360_read_value(data, LD_IN, i,
1049                                                  PC87365_REG_IN_STATUS);
1050                         if (!(reg & 0x01)) {
1051                                 dev_dbg(&client->dev, "Forcibly "
1052                                         "enabling in%d\n", i);
1053                                 pc87360_write_value(data, LD_IN, i,
1054                                                     PC87365_REG_IN_STATUS,
1055                                                     (reg & 0x68) | 0x87);
1056                         }
1057                 }
1058         }
1059
1060         /* We can't blindly trust the Super-I/O space configuration bit,
1061            most BIOS won't set it properly */
1062         for (i=11; i<data->innr; i++) {
1063                 reg = pc87360_read_value(data, LD_IN, i,
1064                                          PC87365_REG_TEMP_STATUS);
1065                 use_thermistors = use_thermistors || (reg & 0x01);
1066         }
1067
1068         i = use_thermistors ? 2 : 0;
1069         for (; i<data->tempnr; i++) {
1070                 if (init >= init_temp[i]) {
1071                         /* Forcibly enable temperature channel */
1072                         reg = pc87360_read_value(data, LD_TEMP, i,
1073                                                  PC87365_REG_TEMP_STATUS);
1074                         if (!(reg & 0x01)) {
1075                                 dev_dbg(&client->dev, "Forcibly "
1076                                         "enabling temp%d\n", i+1);
1077                                 pc87360_write_value(data, LD_TEMP, i,
1078                                                     PC87365_REG_TEMP_STATUS,
1079                                                     0xCF);
1080                         }
1081                 }
1082         }
1083
1084         if (use_thermistors) {
1085                 for (i=11; i<data->innr; i++) {
1086                         if (init >= init_in[i]) {
1087                                 /* The pin may already be used by thermal
1088                                    diodes */
1089                                 reg = pc87360_read_value(data, LD_TEMP,
1090                                       (i-11)/2, PC87365_REG_TEMP_STATUS);
1091                                 if (reg & 0x01) {
1092                                         dev_dbg(&client->dev, "Skipping "
1093                                                 "temp%d, pin already in use "
1094                                                 "by temp%d\n", i-7, (i-11)/2);
1095                                         continue;
1096                                 }
1097
1098                                 /* Forcibly enable thermistor channel */
1099                                 reg = pc87360_read_value(data, LD_IN, i,
1100                                                          PC87365_REG_IN_STATUS);
1101                                 if (!(reg & 0x01)) {
1102                                         dev_dbg(&client->dev, "Forcibly "
1103                                                 "enabling temp%d\n", i-7);
1104                                         pc87360_write_value(data, LD_IN, i,
1105                                                 PC87365_REG_TEMP_STATUS,
1106                                                 (reg & 0x60) | 0x8F);
1107                                 }
1108                         }
1109                 }
1110         }
1111
1112         if (data->innr) {
1113                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1114                                          PC87365_REG_IN_CONFIG);
1115                 if (reg & 0x01) {
1116                         dev_dbg(&client->dev, "Forcibly "
1117                                 "enabling monitoring (VLM)\n");
1118                         pc87360_write_value(data, LD_IN, NO_BANK,
1119                                             PC87365_REG_IN_CONFIG,
1120                                             reg & 0xFE);
1121                 }
1122         }
1123
1124         if (data->tempnr) {
1125                 reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1126                                          PC87365_REG_TEMP_CONFIG);
1127                 if (reg & 0x01) {
1128                         dev_dbg(&client->dev, "Forcibly enabling "
1129                                 "monitoring (TMS)\n");
1130                         pc87360_write_value(data, LD_TEMP, NO_BANK,
1131                                             PC87365_REG_TEMP_CONFIG,
1132                                             reg & 0xFE);
1133                 }
1134
1135                 if (init >= 2) {
1136                         /* Chip config as documented by National Semi. */
1137                         pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1138                         /* We voluntarily omit the bank here, in case the
1139                            sequence itself matters. It shouldn't be a problem,
1140                            since nobody else is supposed to access the
1141                            device at that point. */
1142                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1143                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1144                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1145                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1146                 }
1147         }
1148 }
1149
1150 static void pc87360_autodiv(struct i2c_client *client, int nr)
1151 {
1152         struct pc87360_data *data = i2c_get_clientdata(client);
1153         u8 old_min = data->fan_min[nr];
1154
1155         /* Increase clock divider if needed and possible */
1156         if ((data->fan_status[nr] & 0x04) /* overflow flag */
1157          || (data->fan[nr] >= 224)) { /* next to overflow */
1158                 if ((data->fan_status[nr] & 0x60) != 0x60) {
1159                         data->fan_status[nr] += 0x20;
1160                         data->fan_min[nr] >>= 1;
1161                         data->fan[nr] >>= 1;
1162                         dev_dbg(&client->dev, "Increasing "
1163                                 "clock divider to %d for fan %d\n",
1164                                 FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
1165                 }
1166         } else {
1167                 /* Decrease clock divider if possible */
1168                 while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1169                  && data->fan[nr] < 85 /* bad accuracy */
1170                  && (data->fan_status[nr] & 0x60) != 0x00) {
1171                         data->fan_status[nr] -= 0x20;
1172                         data->fan_min[nr] <<= 1;
1173                         data->fan[nr] <<= 1;
1174                         dev_dbg(&client->dev, "Decreasing "
1175                                 "clock divider to %d for fan %d\n",
1176                                 FAN_DIV_FROM_REG(data->fan_status[nr]),
1177                                 nr+1);
1178                 }
1179         }
1180
1181         /* Write new fan min if it changed */
1182         if (old_min != data->fan_min[nr]) {
1183                 pc87360_write_value(data, LD_FAN, NO_BANK,
1184                                     PC87360_REG_FAN_MIN(nr),
1185                                     data->fan_min[nr]);
1186         }
1187 }
1188
1189 static struct pc87360_data *pc87360_update_device(struct device *dev)
1190 {
1191         struct i2c_client *client = to_i2c_client(dev);
1192         struct pc87360_data *data = i2c_get_clientdata(client);
1193         u8 i;
1194
1195         down(&data->update_lock);
1196
1197         if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1198                 dev_dbg(&client->dev, "Data update\n");
1199
1200                 /* Fans */
1201                 for (i = 0; i < data->fannr; i++) {
1202                         if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1203                                 data->fan_status[i] =
1204                                         pc87360_read_value(data, LD_FAN,
1205                                         NO_BANK, PC87360_REG_FAN_STATUS(i));
1206                                 data->fan[i] = pc87360_read_value(data, LD_FAN,
1207                                                NO_BANK, PC87360_REG_FAN(i));
1208                                 data->fan_min[i] = pc87360_read_value(data,
1209                                                    LD_FAN, NO_BANK,
1210                                                    PC87360_REG_FAN_MIN(i));
1211                                 /* Change clock divider if needed */
1212                                 pc87360_autodiv(client, i);
1213                                 /* Clear bits and write new divider */
1214                                 pc87360_write_value(data, LD_FAN, NO_BANK,
1215                                                     PC87360_REG_FAN_STATUS(i),
1216                                                     data->fan_status[i]);
1217                         }
1218                         if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1219                                 data->pwm[i] = pc87360_read_value(data, LD_FAN,
1220                                                NO_BANK, PC87360_REG_PWM(i));
1221                 }
1222
1223                 /* Voltages */
1224                 for (i = 0; i < data->innr; i++) {
1225                         data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1226                                              PC87365_REG_IN_STATUS);
1227                         /* Clear bits */
1228                         pc87360_write_value(data, LD_IN, i,
1229                                             PC87365_REG_IN_STATUS,
1230                                             data->in_status[i]);
1231                         if ((data->in_status[i] & 0x81) == 0x81) {
1232                                 data->in[i] = pc87360_read_value(data, LD_IN,
1233                                               i, PC87365_REG_IN);
1234                         }
1235                         if (data->in_status[i] & 0x01) {
1236                                 data->in_min[i] = pc87360_read_value(data,
1237                                                   LD_IN, i,
1238                                                   PC87365_REG_IN_MIN);
1239                                 data->in_max[i] = pc87360_read_value(data,
1240                                                   LD_IN, i,
1241                                                   PC87365_REG_IN_MAX);
1242                                 if (i >= 11)
1243                                         data->in_crit[i-11] =
1244                                                 pc87360_read_value(data, LD_IN,
1245                                                 i, PC87365_REG_TEMP_CRIT);
1246                         }
1247                 }
1248                 if (data->innr) {
1249                         data->in_alarms = pc87360_read_value(data, LD_IN,
1250                                           NO_BANK, PC87365_REG_IN_ALARMS1)
1251                                         | ((pc87360_read_value(data, LD_IN,
1252                                             NO_BANK, PC87365_REG_IN_ALARMS2)
1253                                             & 0x07) << 8);
1254                         data->vid = (data->vid_conf & 0xE0) ?
1255                                     pc87360_read_value(data, LD_IN,
1256                                     NO_BANK, PC87365_REG_VID) : 0x1F;
1257                 }
1258
1259                 /* Temperatures */
1260                 for (i = 0; i < data->tempnr; i++) {
1261                         data->temp_status[i] = pc87360_read_value(data,
1262                                                LD_TEMP, i,
1263                                                PC87365_REG_TEMP_STATUS);
1264                         /* Clear bits */
1265                         pc87360_write_value(data, LD_TEMP, i,
1266                                             PC87365_REG_TEMP_STATUS,
1267                                             data->temp_status[i]);
1268                         if ((data->temp_status[i] & 0x81) == 0x81) {
1269                                 data->temp[i] = pc87360_read_value(data,
1270                                                 LD_TEMP, i,
1271                                                 PC87365_REG_TEMP);
1272                         }
1273                         if (data->temp_status[i] & 0x01) {
1274                                 data->temp_min[i] = pc87360_read_value(data,
1275                                                     LD_TEMP, i,
1276                                                     PC87365_REG_TEMP_MIN);
1277                                 data->temp_max[i] = pc87360_read_value(data,
1278                                                     LD_TEMP, i,
1279                                                     PC87365_REG_TEMP_MAX);
1280                                 data->temp_crit[i] = pc87360_read_value(data,
1281                                                      LD_TEMP, i,
1282                                                      PC87365_REG_TEMP_CRIT);
1283                         }
1284                 }
1285                 if (data->tempnr) {
1286                         data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1287                                             NO_BANK, PC87365_REG_TEMP_ALARMS)
1288                                             & 0x3F;
1289                 }
1290
1291                 data->last_updated = jiffies;
1292                 data->valid = 1;
1293         }
1294
1295         up(&data->update_lock);
1296
1297         return data;
1298 }
1299
1300 static int __init pc87360_init(void)
1301 {
1302         int i;
1303
1304         if (pc87360_find(0x2e, &devid, extra_isa)
1305          && pc87360_find(0x4e, &devid, extra_isa)) {
1306                 printk(KERN_WARNING "pc87360: PC8736x not detected, "
1307                        "module not inserted.\n");
1308                 return -ENODEV;
1309         }
1310
1311         /* Arbitrarily pick one of the addresses */
1312         for (i = 0; i < 3; i++) {
1313                 if (extra_isa[i] != 0x0000) {
1314                         address = extra_isa[i];
1315                         break;
1316                 }
1317         }
1318
1319         if (address == 0x0000) {
1320                 printk(KERN_WARNING "pc87360: No active logical device, "
1321                        "module not inserted.\n");
1322                 return -ENODEV;
1323         }
1324
1325         return i2c_isa_add_driver(&pc87360_driver);
1326 }
1327
1328 static void __exit pc87360_exit(void)
1329 {
1330         i2c_isa_del_driver(&pc87360_driver);
1331 }
1332
1333
1334 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1335 MODULE_DESCRIPTION("PC8736x hardware monitor");
1336 MODULE_LICENSE("GPL");
1337
1338 module_init(pc87360_init);
1339 module_exit(pc87360_exit);