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   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-sensor.h>
  43 #include <linux/i2c-vid.h>
  44 #include <linux/hwmon.h>
  45 #include <linux/err.h>
  46 #include <asm/io.h>
  47
  48 static unsigned short normal_i2c[] = { I2C_CLIENT_END };
  49 static unsigned int normal_isa[] = { 0, I2C_CLIENT_ISA_END };
  50 static struct i2c_force_data forces[] = {{ NULL }};
  51 static u8 devid;
  52 static unsigned int extra_isa[3];
  53 static u8 confreg[4];
  54
  55 enum chips { any_chip, pc87360, pc87363, pc87364, pc87365, pc87366 };
  56 static struct i2c_address_data addr_data = {
  57         .normal_i2c             = normal_i2c,
  58         .normal_isa             = normal_isa,
  59         .forces                 = forces,
  60 };
  61
  62 static int init = 1;
  63 module_param(init, int, 0);
  64 MODULE_PARM_DESC(init,
  65  "Chip initialization level:\n"
  66  " 0: None\n"
  67  "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
  68  " 2: Forcibly enable all voltage and temperature channels, except in9\n"
  69  " 3: Forcibly enable all voltage and temperature channels, including in9");
  70
  71 /*
  72  * Super-I/O registers and operations
  73  */
  74
  75 #define DEV     0x07    /* Register: Logical device select */
  76 #define DEVID   0x20    /* Register: Device ID */
  77 #define ACT     0x30    /* Register: Device activation */
  78 #define BASE    0x60    /* Register: Base address */
  79
  80 #define FSCM    0x09    /* Logical device: fans */
  81 #define VLM     0x0d    /* Logical device: voltages */
  82 #define TMS     0x0e    /* Logical device: temperatures */
  83 static const u8 logdev[3] = { FSCM, VLM, TMS };
  84
  85 #define LD_FAN          0
  86 #define LD_IN           1
  87 #define LD_TEMP         2
  88
  89 static inline void superio_outb(int sioaddr, int reg, int val)
  90 {
  91         outb(reg, sioaddr);
  92         outb(val, sioaddr+1);
  93 }
  94
  95 static inline int superio_inb(int sioaddr, int reg)
  96 {
  97         outb(reg, sioaddr);
  98         return inb(sioaddr+1);
  99 }
 100
 101 static inline void superio_exit(int sioaddr)
 102 {
 103         outb(0x02, sioaddr);
 104         outb(0x02, sioaddr+1);
 105 }
 106
 107 /*
 108  * Logical devices
 109  */
 110
 111 #define PC87360_EXTENT          0x10
 112 #define PC87365_REG_BANK        0x09
 113 #define NO_BANK                 0xff
 114
 115 /*
 116  * Fan registers and conversions
 117  */
 118
 119 /* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
 120 #define PC87360_REG_PRESCALE(nr)        (0x00 + 2 * (nr))
 121 #define PC87360_REG_PWM(nr)             (0x01 + 2 * (nr))
 122 #define PC87360_REG_FAN_MIN(nr)         (0x06 + 3 * (nr))
 123 #define PC87360_REG_FAN(nr)             (0x07 + 3 * (nr))
 124 #define PC87360_REG_FAN_STATUS(nr)      (0x08 + 3 * (nr))
 125
 126 #define FAN_FROM_REG(val,div)           ((val) == 0 ? 0: \
 127                                          480000 / ((val)*(div)))
 128 #define FAN_TO_REG(val,div)             ((val) <= 100 ? 0 : \
 129                                          480000 / ((val)*(div)))
 130 #define FAN_DIV_FROM_REG(val)           (1 << ((val >> 5) & 0x03))
 131 #define FAN_STATUS_FROM_REG(val)        ((val) & 0x07)
 132
 133 #define FAN_CONFIG_MONITOR(val,nr)      (((val) >> (2 + nr * 3)) & 1)
 134 #define FAN_CONFIG_CONTROL(val,nr)      (((val) >> (3 + nr * 3)) & 1)
 135 #define FAN_CONFIG_INVERT(val,nr)       (((val) >> (4 + nr * 3)) & 1)
 136
 137 #define PWM_FROM_REG(val,inv)           ((inv) ? 255 - (val) : (val))
 138 static inline u8 PWM_TO_REG(int val, int inv)
 139 {
 140         if (inv)
 141                 val = 255 - val;
 142         if (val < 0)
 143                 return 0;
 144         if (val > 255)
 145                 return 255;
 146         return val;
 147 }
 148
 149 /*
 150  * Voltage registers and conversions
 151  */
 152
 153 #define PC87365_REG_IN_CONVRATE         0x07
 154 #define PC87365_REG_IN_CONFIG           0x08
 155 #define PC87365_REG_IN                  0x0B
 156 #define PC87365_REG_IN_MIN              0x0D
 157 #define PC87365_REG_IN_MAX              0x0C
 158 #define PC87365_REG_IN_STATUS           0x0A
 159 #define PC87365_REG_IN_ALARMS1          0x00
 160 #define PC87365_REG_IN_ALARMS2          0x01
 161 #define PC87365_REG_VID                 0x06
 162
 163 #define IN_FROM_REG(val,ref)            (((val) * (ref) + 128) / 256)
 164 #define IN_TO_REG(val,ref)              ((val) < 0 ? 0 : \
 165                                          (val)*256 >= (ref)*255 ? 255: \
 166                                          ((val) * 256 + (ref)/2) / (ref))
 167
 168 /*
 169  * Temperature registers and conversions
 170  */
 171
 172 #define PC87365_REG_TEMP_CONFIG         0x08
 173 #define PC87365_REG_TEMP                0x0B
 174 #define PC87365_REG_TEMP_MIN            0x0D
 175 #define PC87365_REG_TEMP_MAX            0x0C
 176 #define PC87365_REG_TEMP_CRIT           0x0E
 177 #define PC87365_REG_TEMP_STATUS         0x0A
 178 #define PC87365_REG_TEMP_ALARMS         0x00
 179
 180 #define TEMP_FROM_REG(val)              ((val) * 1000)
 181 #define TEMP_TO_REG(val)                ((val) < -55000 ? -55 : \
 182                                          (val) > 127000 ? 127 : \
 183                                          (val) < 0 ? ((val) - 500) / 1000 : \
 184                                          ((val) + 500) / 1000)
 185
 186 /*
 187  * Client data (each client gets its own)
 188  */
 189
 190 struct pc87360_data {
 191         struct i2c_client client;
 192         struct class_device *class_dev;
 193         struct semaphore lock;
 194         struct semaphore update_lock;
 195         char valid;             /* !=0 if following fields are valid */
 196         unsigned long last_updated;     /* In jiffies */
 197
 198         int address[3];
 199
 200         u8 fannr, innr, tempnr;
 201
 202         u8 fan[3];              /* Register value */
 203         u8 fan_min[3];          /* Register value */
 204         u8 fan_status[3];       /* Register value */
 205         u8 pwm[3];              /* Register value */
 206         u16 fan_conf;           /* Configuration register values, combined */
 207
 208         u16 in_vref;            /* 1 mV/bit */
 209         u8 in[14];              /* Register value */
 210         u8 in_min[14];          /* Register value */
 211         u8 in_max[14];          /* Register value */
 212         u8 in_crit[3];          /* Register value */
 213         u8 in_status[14];       /* Register value */
 214         u16 in_alarms;          /* Register values, combined, masked */
 215         u8 vid_conf;            /* Configuration register value */
 216         u8 vrm;
 217         u8 vid;                 /* Register value */
 218
 219         s8 temp[3];             /* Register value */
 220         s8 temp_min[3];         /* Register value */
 221         s8 temp_max[3];         /* Register value */
 222         s8 temp_crit[3];        /* Register value */
 223         u8 temp_status[3];      /* Register value */
 224         u8 temp_alarms;         /* Register value, masked */
 225 };
 226
 227 /*
 228  * Functions declaration
 229  */
 230
 231 static int pc87360_attach_adapter(struct i2c_adapter *adapter);
 232 static int pc87360_detect(struct i2c_adapter *adapter, int address, int kind);
 233 static int pc87360_detach_client(struct i2c_client *client);
 234
 235 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
 236                               u8 reg);
 237 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
 238                                 u8 reg, u8 value);
 239 static void pc87360_init_client(struct i2c_client *client, int use_thermistors);
 240 static struct pc87360_data *pc87360_update_device(struct device *dev);
 241
 242 /*
 243  * Driver data (common to all clients)
 244  */
 245
 246 static struct i2c_driver pc87360_driver = {
 247         .owner          = THIS_MODULE,
 248         .name           = "pc87360",
 249         .flags          = I2C_DF_NOTIFY,
 250         .attach_adapter = pc87360_attach_adapter,
 251         .detach_client  = pc87360_detach_client,
 252 };
 253
 254 /*
 255  * Sysfs stuff
 256  */
 257
 258 static ssize_t set_fan_min(struct device *dev, const char *buf,
 259         size_t count, int nr)
 260 {
 261         struct i2c_client *client = to_i2c_client(dev);
 262         struct pc87360_data *data = i2c_get_clientdata(client);
 263         long fan_min = simple_strtol(buf, NULL, 10);
 264
 265         down(&data->update_lock);
 266         fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[nr]));
 267
 268         /* If it wouldn't fit, change clock divisor */
 269         while (fan_min > 255
 270             && (data->fan_status[nr] & 0x60) != 0x60) {
 271                 fan_min >>= 1;
 272                 data->fan[nr] >>= 1;
 273                 data->fan_status[nr] += 0x20;
 274         }
 275         data->fan_min[nr] = fan_min > 255 ? 255 : fan_min;
 276         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(nr),
 277                             data->fan_min[nr]);
 278
 279         /* Write new divider, preserve alarm bits */
 280         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(nr),
 281                             data->fan_status[nr] & 0xF9);
 282         up(&data->update_lock);
 283
 284         return count;
 285 }
 286
 287 #define show_and_set_fan(offset) \
 288 static ssize_t show_fan##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
 289 { \
 290         struct pc87360_data *data = pc87360_update_device(dev); \
 291         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[offset-1], \
 292                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
 293 } \
 294 static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
 295 { \
 296         struct pc87360_data *data = pc87360_update_device(dev); \
 297         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[offset-1], \
 298                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
 299 } \
 300 static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \
 301 { \
 302         struct pc87360_data *data = pc87360_update_device(dev); \
 303         return sprintf(buf, "%u\n", \
 304                        FAN_DIV_FROM_REG(data->fan_status[offset-1])); \
 305 } \
 306 static ssize_t show_fan##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 307 { \
 308         struct pc87360_data *data = pc87360_update_device(dev); \
 309         return sprintf(buf, "%u\n", \
 310                        FAN_STATUS_FROM_REG(data->fan_status[offset-1])); \
 311 } \
 312 static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 313         size_t count) \
 314 { \
 315         return set_fan_min(dev, buf, count, offset-1); \
 316 } \
 317 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
 318         show_fan##offset##_input, NULL); \
 319 static DEVICE_ATTR(fan##offset##_min, S_IWUSR | S_IRUGO, \
 320         show_fan##offset##_min, set_fan##offset##_min); \
 321 static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \
 322         show_fan##offset##_div, NULL); \
 323 static DEVICE_ATTR(fan##offset##_status, S_IRUGO, \
 324         show_fan##offset##_status, NULL);
 325 show_and_set_fan(1)
 326 show_and_set_fan(2)
 327 show_and_set_fan(3)
 328
 329 #define show_and_set_pwm(offset) \
 330 static ssize_t show_pwm##offset(struct device *dev, struct device_attribute *attr, char *buf) \
 331 { \
 332         struct pc87360_data *data = pc87360_update_device(dev); \
 333         return sprintf(buf, "%u\n", \
 334                        PWM_FROM_REG(data->pwm[offset-1], \
 335                                     FAN_CONFIG_INVERT(data->fan_conf, \
 336                                                       offset-1))); \
 337 } \
 338 static ssize_t set_pwm##offset(struct device *dev, struct device_attribute *attr, const char *buf, \
 339         size_t count) \
 340 { \
 341         struct i2c_client *client = to_i2c_client(dev); \
 342         struct pc87360_data *data = i2c_get_clientdata(client); \
 343         long val = simple_strtol(buf, NULL, 10); \
 344  \
 345         down(&data->update_lock); \
 346         data->pwm[offset-1] = PWM_TO_REG(val, \
 347                               FAN_CONFIG_INVERT(data->fan_conf, offset-1)); \
 348         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(offset-1), \
 349                             data->pwm[offset-1]); \
 350         up(&data->update_lock); \
 351         return count; \
 352 } \
 353 static DEVICE_ATTR(pwm##offset, S_IWUSR | S_IRUGO, \
 354         show_pwm##offset, set_pwm##offset);
 355 show_and_set_pwm(1)
 356 show_and_set_pwm(2)
 357 show_and_set_pwm(3)
 358
 359 #define show_and_set_in(offset) \
 360 static ssize_t show_in##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
 361 { \
 362         struct pc87360_data *data = pc87360_update_device(dev); \
 363         return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \
 364                        data->in_vref)); \
 365 } \
 366 static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
 367 { \
 368         struct pc87360_data *data = pc87360_update_device(dev); \
 369         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \
 370                        data->in_vref)); \
 371 } \
 372 static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
 373 { \
 374         struct pc87360_data *data = pc87360_update_device(dev); \
 375         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \
 376                        data->in_vref)); \
 377 } \
 378 static ssize_t show_in##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 379 { \
 380         struct pc87360_data *data = pc87360_update_device(dev); \
 381         return sprintf(buf, "%u\n", data->in_status[offset]); \
 382 } \
 383 static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 384         size_t count) \
 385 { \
 386         struct i2c_client *client = to_i2c_client(dev); \
 387         struct pc87360_data *data = i2c_get_clientdata(client); \
 388         long val = simple_strtol(buf, NULL, 10); \
 389  \
 390         down(&data->update_lock); \
 391         data->in_min[offset] = IN_TO_REG(val, data->in_vref); \
 392         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MIN, \
 393                             data->in_min[offset]); \
 394         up(&data->update_lock); \
 395         return count; \
 396 } \
 397 static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
 398         size_t count) \
 399 { \
 400         struct i2c_client *client = to_i2c_client(dev); \
 401         struct pc87360_data *data = i2c_get_clientdata(client); \
 402         long val = simple_strtol(buf, NULL, 10); \
 403  \
 404         down(&data->update_lock); \
 405         data->in_max[offset] = IN_TO_REG(val, \
 406                                data->in_vref); \
 407         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MAX, \
 408                             data->in_max[offset]); \
 409         up(&data->update_lock); \
 410         return count; \
 411 } \
 412 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
 413         show_in##offset##_input, NULL); \
 414 static DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \
 415         show_in##offset##_min, set_in##offset##_min); \
 416 static DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \
 417         show_in##offset##_max, set_in##offset##_max); \
 418 static DEVICE_ATTR(in##offset##_status, S_IRUGO, \
 419         show_in##offset##_status, NULL);
 420 show_and_set_in(0)
 421 show_and_set_in(1)
 422 show_and_set_in(2)
 423 show_and_set_in(3)
 424 show_and_set_in(4)
 425 show_and_set_in(5)
 426 show_and_set_in(6)
 427 show_and_set_in(7)
 428 show_and_set_in(8)
 429 show_and_set_in(9)
 430 show_and_set_in(10)
 431
 432 #define show_and_set_therm(offset) \
 433 static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
 434 { \
 435         struct pc87360_data *data = pc87360_update_device(dev); \
 436         return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset+7], \
 437                        data->in_vref)); \
 438 } \
 439 static ssize_t show_temp##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
 440 { \
 441         struct pc87360_data *data = pc87360_update_device(dev); \
 442         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset+7], \
 443                        data->in_vref)); \
 444 } \
 445 static ssize_t show_temp##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
 446 { \
 447         struct pc87360_data *data = pc87360_update_device(dev); \
 448         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset+7], \
 449                        data->in_vref)); \
 450 } \
 451 static ssize_t show_temp##offset##_crit(struct device *dev, struct device_attribute *attr, char *buf) \
 452 { \
 453         struct pc87360_data *data = pc87360_update_device(dev); \
 454         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[offset-4], \
 455                        data->in_vref)); \
 456 } \
 457 static ssize_t show_temp##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 458 { \
 459         struct pc87360_data *data = pc87360_update_device(dev); \
 460         return sprintf(buf, "%u\n", data->in_status[offset+7]); \
 461 } \
 462 static ssize_t set_temp##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 463         size_t count) \
 464 { \
 465         struct i2c_client *client = to_i2c_client(dev); \
 466         struct pc87360_data *data = i2c_get_clientdata(client); \
 467         long val = simple_strtol(buf, NULL, 10); \
 468  \
 469         down(&data->update_lock); \
 470         data->in_min[offset+7] = IN_TO_REG(val, data->in_vref); \
 471         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MIN, \
 472                             data->in_min[offset+7]); \
 473         up(&data->update_lock); \
 474         return count; \
 475 } \
 476 static ssize_t set_temp##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
 477         size_t count) \
 478 { \
 479         struct i2c_client *client = to_i2c_client(dev); \
 480         struct pc87360_data *data = i2c_get_clientdata(client); \
 481         long val = simple_strtol(buf, NULL, 10); \
 482  \
 483         down(&data->update_lock); \
 484         data->in_max[offset+7] = IN_TO_REG(val, data->in_vref); \
 485         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MAX, \
 486                             data->in_max[offset+7]); \
 487         up(&data->update_lock); \
 488         return count; \
 489 } \
 490 static ssize_t set_temp##offset##_crit(struct device *dev, struct device_attribute *attr, const char *buf, \
 491         size_t count) \
 492 { \
 493         struct i2c_client *client = to_i2c_client(dev); \
 494         struct pc87360_data *data = i2c_get_clientdata(client); \
 495         long val = simple_strtol(buf, NULL, 10); \
 496  \
 497         down(&data->update_lock); \
 498         data->in_crit[offset-4] = IN_TO_REG(val, data->in_vref); \
 499         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_CRIT, \
 500                             data->in_crit[offset-4]); \
 501         up(&data->update_lock); \
 502         return count; \
 503 } \
 504 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
 505         show_temp##offset##_input, NULL); \
 506 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
 507         show_temp##offset##_min, set_temp##offset##_min); \
 508 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
 509         show_temp##offset##_max, set_temp##offset##_max); \
 510 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
 511         show_temp##offset##_crit, set_temp##offset##_crit); \
 512 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
 513         show_temp##offset##_status, NULL);
 514 show_and_set_therm(4)
 515 show_and_set_therm(5)
 516 show_and_set_therm(6)
 517
 518 static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
 519 {
 520         struct pc87360_data *data = pc87360_update_device(dev);
 521         return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
 522 }
 523 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
 524
 525 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
 526 {
 527         struct pc87360_data *data = pc87360_update_device(dev);
 528         return sprintf(buf, "%u\n", data->vrm);
 529 }
 530 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 531 {
 532         struct i2c_client *client = to_i2c_client(dev);
 533         struct pc87360_data *data = i2c_get_clientdata(client);
 534         data->vrm = simple_strtoul(buf, NULL, 10);
 535         return count;
 536 }
 537 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
 538
 539 static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr, char *buf)
 540 {
 541         struct pc87360_data *data = pc87360_update_device(dev);
 542         return sprintf(buf, "%u\n", data->in_alarms);
 543 }
 544 static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
 545
 546 #define show_and_set_temp(offset) \
 547 static ssize_t show_temp##offset##_input(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[offset-1])); \
 551 } \
 552 static ssize_t show_temp##offset##_min(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_min[offset-1])); \
 556 } \
 557 static ssize_t show_temp##offset##_max(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", TEMP_FROM_REG(data->temp_max[offset-1])); \
 561 }\
 562 static ssize_t show_temp##offset##_crit(struct device *dev, struct device_attribute *attr, char *buf) \
 563 { \
 564         struct pc87360_data *data = pc87360_update_device(dev); \
 565         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[offset-1])); \
 566 }\
 567 static ssize_t show_temp##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 568 { \
 569         struct pc87360_data *data = pc87360_update_device(dev); \
 570         return sprintf(buf, "%d\n", data->temp_status[offset-1]); \
 571 }\
 572 static ssize_t set_temp##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 573         size_t count) \
 574 { \
 575         struct i2c_client *client = to_i2c_client(dev); \
 576         struct pc87360_data *data = i2c_get_clientdata(client); \
 577         long val = simple_strtol(buf, NULL, 10); \
 578  \
 579         down(&data->update_lock); \
 580         data->temp_min[offset-1] = TEMP_TO_REG(val); \
 581         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MIN, \
 582                             data->temp_min[offset-1]); \
 583         up(&data->update_lock); \
 584         return count; \
 585 } \
 586 static ssize_t set_temp##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
 587         size_t count) \
 588 { \
 589         struct i2c_client *client = to_i2c_client(dev); \
 590         struct pc87360_data *data = i2c_get_clientdata(client); \
 591         long val = simple_strtol(buf, NULL, 10); \
 592  \
 593         down(&data->update_lock); \
 594         data->temp_max[offset-1] = TEMP_TO_REG(val); \
 595         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MAX, \
 596                             data->temp_max[offset-1]); \
 597         up(&data->update_lock); \
 598         return count; \
 599 } \
 600 static ssize_t set_temp##offset##_crit(struct device *dev, struct device_attribute *attr, const char *buf, \
 601         size_t count) \
 602 { \
 603         struct i2c_client *client = to_i2c_client(dev); \
 604         struct pc87360_data *data = i2c_get_clientdata(client); \
 605         long val = simple_strtol(buf, NULL, 10); \
 606  \
 607         down(&data->update_lock); \
 608         data->temp_crit[offset-1] = TEMP_TO_REG(val); \
 609         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_CRIT, \
 610                             data->temp_crit[offset-1]); \
 611         up(&data->update_lock); \
 612         return count; \
 613 } \
 614 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
 615         show_temp##offset##_input, NULL); \
 616 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
 617         show_temp##offset##_min, set_temp##offset##_min); \
 618 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
 619         show_temp##offset##_max, set_temp##offset##_max); \
 620 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
 621         show_temp##offset##_crit, set_temp##offset##_crit); \
 622 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
 623         show_temp##offset##_status, NULL);
 624 show_and_set_temp(1)
 625 show_and_set_temp(2)
 626 show_and_set_temp(3)
 627
 628 static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *attr, char *buf)
 629 {
 630         struct pc87360_data *data = pc87360_update_device(dev);
 631         return sprintf(buf, "%u\n", data->temp_alarms);
 632 }
 633 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
 634
 635 /*
 636  * Device detection, registration and update
 637  */
 638
 639 static int pc87360_attach_adapter(struct i2c_adapter *adapter)
 640 {
 641         return i2c_detect(adapter, &addr_data, pc87360_detect);
 642 }
 643
 644 static int pc87360_find(int sioaddr, u8 *devid, int *address)
 645 {
 646         u16 val;
 647         int i;
 648         int nrdev; /* logical device count */
 649
 650         /* No superio_enter */
 651
 652         /* Identify device */
 653         val = superio_inb(sioaddr, DEVID);
 654         switch (val) {
 655         case 0xE1: /* PC87360 */
 656         case 0xE8: /* PC87363 */
 657         case 0xE4: /* PC87364 */
 658                 nrdev = 1;
 659                 break;
 660         case 0xE5: /* PC87365 */
 661         case 0xE9: /* PC87366 */
 662                 nrdev = 3;
 663                 break;
 664         default:
 665                 superio_exit(sioaddr);
 666                 return -ENODEV;
 667         }
 668         /* Remember the device id */
 669         *devid = val;
 670
 671         for (i = 0; i < nrdev; i++) {
 672                 /* select logical device */
 673                 superio_outb(sioaddr, DEV, logdev[i]);
 674
 675                 val = superio_inb(sioaddr, ACT);
 676                 if (!(val & 0x01)) {
 677                         printk(KERN_INFO "pc87360: Device 0x%02x not "
 678                                "activated\n", logdev[i]);
 679                         continue;
 680                 }
 681
 682                 val = (superio_inb(sioaddr, BASE) << 8)
 683                     | superio_inb(sioaddr, BASE + 1);
 684                 if (!val) {
 685                         printk(KERN_INFO "pc87360: Base address not set for "
 686                                "device 0x%02x\n", logdev[i]);
 687                         continue;
 688                 }
 689
 690                 address[i] = val;
 691
 692                 if (i==0) { /* Fans */
 693                         confreg[0] = superio_inb(sioaddr, 0xF0);
 694                         confreg[1] = superio_inb(sioaddr, 0xF1);
 695
 696 #ifdef DEBUG
 697                         printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
 698                                "ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
 699                                (confreg[0]>>3)&1, (confreg[0]>>4)&1);
 700                         printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
 701                                "ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
 702                                (confreg[0]>>6)&1, (confreg[0]>>7)&1);
 703                         printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
 704                                "ctrl=%d inv=%d\n", confreg[1]&1,
 705                                (confreg[1]>>1)&1, (confreg[1]>>2)&1);
 706 #endif
 707                 } else if (i==1) { /* Voltages */
 708                         /* Are we using thermistors? */
 709                         if (*devid == 0xE9) { /* PC87366 */
 710                                 /* These registers are not logical-device
 711                                    specific, just that we won't need them if
 712                                    we don't use the VLM device */
 713                                 confreg[2] = superio_inb(sioaddr, 0x2B);
 714                                 confreg[3] = superio_inb(sioaddr, 0x25);
 715
 716                                 if (confreg[2] & 0x40) {
 717                                         printk(KERN_INFO "pc87360: Using "
 718                                                "thermistors for temperature "
 719                                                "monitoring\n");
 720                                 }
 721                                 if (confreg[3] & 0xE0) {
 722                                         printk(KERN_INFO "pc87360: VID "
 723                                                "inputs routed (mode %u)\n",
 724                                                confreg[3] >> 5);
 725                                 }
 726                         }
 727                 }
 728         }
 729
 730         superio_exit(sioaddr);
 731         return 0;
 732 }
 733
 734 /* We don't really care about the address.
 735    Read from extra_isa instead. */
 736 int pc87360_detect(struct i2c_adapter *adapter, int address, int kind)
 737 {
 738         int i;
 739         struct i2c_client *new_client;
 740         struct pc87360_data *data;
 741         int err = 0;
 742         const char *name = "pc87360";
 743         int use_thermistors = 0;
 744
 745         if (!i2c_is_isa_adapter(adapter))
 746                 return -ENODEV;
 747
 748         if (!(data = kmalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
 749                 return -ENOMEM;
 750         memset(data, 0x00, sizeof(struct pc87360_data));
 751
 752         new_client = &data->client;
 753         i2c_set_clientdata(new_client, data);
 754         new_client->addr = address;
 755         init_MUTEX(&data->lock);
 756         new_client->adapter = adapter;
 757         new_client->driver = &pc87360_driver;
 758         new_client->flags = 0;
 759
 760         data->fannr = 2;
 761         data->innr = 0;
 762         data->tempnr = 0;
 763
 764         switch (devid) {
 765         case 0xe8:
 766                 name = "pc87363";
 767                 break;
 768         case 0xe4:
 769                 name = "pc87364";
 770                 data->fannr = 3;
 771                 break;
 772         case 0xe5:
 773                 name = "pc87365";
 774                 data->fannr = extra_isa[0] ? 3 : 0;
 775                 data->innr = extra_isa[1] ? 11 : 0;
 776                 data->tempnr = extra_isa[2] ? 2 : 0;
 777                 break;
 778         case 0xe9:
 779                 name = "pc87366";
 780                 data->fannr = extra_isa[0] ? 3 : 0;
 781                 data->innr = extra_isa[1] ? 14 : 0;
 782                 data->tempnr = extra_isa[2] ? 3 : 0;
 783                 break;
 784         }
 785
 786         strcpy(new_client->name, name);
 787         data->valid = 0;
 788         init_MUTEX(&data->update_lock);
 789
 790         for (i = 0; i < 3; i++) {
 791                 if (((data->address[i] = extra_isa[i]))
 792                  && !request_region(extra_isa[i], PC87360_EXTENT,
 793                                     pc87360_driver.name)) {
 794                         dev_err(&new_client->dev, "Region 0x%x-0x%x already "
 795                                 "in use!\n", extra_isa[i],
 796                                 extra_isa[i]+PC87360_EXTENT-1);
 797                         for (i--; i >= 0; i--)
 798                                 release_region(extra_isa[i], PC87360_EXTENT);
 799                         err = -EBUSY;
 800                         goto ERROR1;
 801                 }
 802         }
 803
 804         /* Retrieve the fans configuration from Super-I/O space */
 805         if (data->fannr)
 806                 data->fan_conf = confreg[0] | (confreg[1] << 8);
 807
 808         if ((err = i2c_attach_client(new_client)))
 809                 goto ERROR2;
 810
 811         /* Use the correct reference voltage
 812            Unless both the VLM and the TMS logical devices agree to
 813            use an external Vref, the internal one is used. */
 814         if (data->innr) {
 815                 i = pc87360_read_value(data, LD_IN, NO_BANK,
 816                                        PC87365_REG_IN_CONFIG);
 817                 if (data->tempnr) {
 818                         i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
 819                                                 PC87365_REG_TEMP_CONFIG);
 820                 }
 821                 data->in_vref = (i&0x02) ? 3025 : 2966;
 822                 dev_dbg(&new_client->dev, "Using %s reference voltage\n",
 823                         (i&0x02) ? "external" : "internal");
 824
 825                 data->vid_conf = confreg[3];
 826                 data->vrm = 90;
 827         }
 828
 829         /* Fan clock dividers may be needed before any data is read */
 830         for (i = 0; i < data->fannr; i++) {
 831                 if (FAN_CONFIG_MONITOR(data->fan_conf, i))
 832                         data->fan_status[i] = pc87360_read_value(data,
 833                                               LD_FAN, NO_BANK,
 834                                               PC87360_REG_FAN_STATUS(i));
 835         }
 836
 837         if (init > 0) {
 838                 if (devid == 0xe9 && data->address[1]) /* PC87366 */
 839                         use_thermistors = confreg[2] & 0x40;
 840
 841                 pc87360_init_client(new_client, use_thermistors);
 842         }
 843
 844         /* Register sysfs hooks */
 845         data->class_dev = hwmon_device_register(&new_client->dev);
 846         if (IS_ERR(data->class_dev)) {
 847                 err = PTR_ERR(data->class_dev);
 848                 goto ERROR3;
 849         }
 850
 851         if (data->innr) {
 852                 device_create_file(&new_client->dev, &dev_attr_in0_input);
 853                 device_create_file(&new_client->dev, &dev_attr_in1_input);
 854                 device_create_file(&new_client->dev, &dev_attr_in2_input);
 855                 device_create_file(&new_client->dev, &dev_attr_in3_input);
 856                 device_create_file(&new_client->dev, &dev_attr_in4_input);
 857                 device_create_file(&new_client->dev, &dev_attr_in5_input);
 858                 device_create_file(&new_client->dev, &dev_attr_in6_input);
 859                 device_create_file(&new_client->dev, &dev_attr_in7_input);
 860                 device_create_file(&new_client->dev, &dev_attr_in8_input);
 861                 device_create_file(&new_client->dev, &dev_attr_in9_input);
 862                 device_create_file(&new_client->dev, &dev_attr_in10_input);
 863                 device_create_file(&new_client->dev, &dev_attr_in0_min);
 864                 device_create_file(&new_client->dev, &dev_attr_in1_min);
 865                 device_create_file(&new_client->dev, &dev_attr_in2_min);
 866                 device_create_file(&new_client->dev, &dev_attr_in3_min);
 867                 device_create_file(&new_client->dev, &dev_attr_in4_min);
 868                 device_create_file(&new_client->dev, &dev_attr_in5_min);
 869                 device_create_file(&new_client->dev, &dev_attr_in6_min);
 870                 device_create_file(&new_client->dev, &dev_attr_in7_min);
 871                 device_create_file(&new_client->dev, &dev_attr_in8_min);
 872                 device_create_file(&new_client->dev, &dev_attr_in9_min);
 873                 device_create_file(&new_client->dev, &dev_attr_in10_min);
 874                 device_create_file(&new_client->dev, &dev_attr_in0_max);
 875                 device_create_file(&new_client->dev, &dev_attr_in1_max);
 876                 device_create_file(&new_client->dev, &dev_attr_in2_max);
 877                 device_create_file(&new_client->dev, &dev_attr_in3_max);
 878                 device_create_file(&new_client->dev, &dev_attr_in4_max);
 879                 device_create_file(&new_client->dev, &dev_attr_in5_max);
 880                 device_create_file(&new_client->dev, &dev_attr_in6_max);
 881                 device_create_file(&new_client->dev, &dev_attr_in7_max);
 882                 device_create_file(&new_client->dev, &dev_attr_in8_max);
 883                 device_create_file(&new_client->dev, &dev_attr_in9_max);
 884                 device_create_file(&new_client->dev, &dev_attr_in10_max);
 885                 device_create_file(&new_client->dev, &dev_attr_in0_status);
 886                 device_create_file(&new_client->dev, &dev_attr_in1_status);
 887                 device_create_file(&new_client->dev, &dev_attr_in2_status);
 888                 device_create_file(&new_client->dev, &dev_attr_in3_status);
 889                 device_create_file(&new_client->dev, &dev_attr_in4_status);
 890                 device_create_file(&new_client->dev, &dev_attr_in5_status);
 891                 device_create_file(&new_client->dev, &dev_attr_in6_status);
 892                 device_create_file(&new_client->dev, &dev_attr_in7_status);
 893                 device_create_file(&new_client->dev, &dev_attr_in8_status);
 894                 device_create_file(&new_client->dev, &dev_attr_in9_status);
 895                 device_create_file(&new_client->dev, &dev_attr_in10_status);
 896
 897                 device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
 898                 device_create_file(&new_client->dev, &dev_attr_vrm);
 899                 device_create_file(&new_client->dev, &dev_attr_alarms_in);
 900         }
 901
 902         if (data->tempnr) {
 903                 device_create_file(&new_client->dev, &dev_attr_temp1_input);
 904                 device_create_file(&new_client->dev, &dev_attr_temp2_input);
 905                 device_create_file(&new_client->dev, &dev_attr_temp1_min);
 906                 device_create_file(&new_client->dev, &dev_attr_temp2_min);
 907                 device_create_file(&new_client->dev, &dev_attr_temp1_max);
 908                 device_create_file(&new_client->dev, &dev_attr_temp2_max);
 909                 device_create_file(&new_client->dev, &dev_attr_temp1_crit);
 910                 device_create_file(&new_client->dev, &dev_attr_temp2_crit);
 911                 device_create_file(&new_client->dev, &dev_attr_temp1_status);
 912                 device_create_file(&new_client->dev, &dev_attr_temp2_status);
 913
 914                 device_create_file(&new_client->dev, &dev_attr_alarms_temp);
 915         }
 916         if (data->tempnr == 3) {
 917                 device_create_file(&new_client->dev, &dev_attr_temp3_input);
 918                 device_create_file(&new_client->dev, &dev_attr_temp3_min);
 919                 device_create_file(&new_client->dev, &dev_attr_temp3_max);
 920                 device_create_file(&new_client->dev, &dev_attr_temp3_crit);
 921                 device_create_file(&new_client->dev, &dev_attr_temp3_status);
 922         }
 923         if (data->innr == 14) {
 924                 device_create_file(&new_client->dev, &dev_attr_temp4_input);
 925                 device_create_file(&new_client->dev, &dev_attr_temp5_input);
 926                 device_create_file(&new_client->dev, &dev_attr_temp6_input);
 927                 device_create_file(&new_client->dev, &dev_attr_temp4_min);
 928                 device_create_file(&new_client->dev, &dev_attr_temp5_min);
 929                 device_create_file(&new_client->dev, &dev_attr_temp6_min);
 930                 device_create_file(&new_client->dev, &dev_attr_temp4_max);
 931                 device_create_file(&new_client->dev, &dev_attr_temp5_max);
 932                 device_create_file(&new_client->dev, &dev_attr_temp6_max);
 933                 device_create_file(&new_client->dev, &dev_attr_temp4_crit);
 934                 device_create_file(&new_client->dev, &dev_attr_temp5_crit);
 935                 device_create_file(&new_client->dev, &dev_attr_temp6_crit);
 936                 device_create_file(&new_client->dev, &dev_attr_temp4_status);
 937                 device_create_file(&new_client->dev, &dev_attr_temp5_status);
 938                 device_create_file(&new_client->dev, &dev_attr_temp6_status);
 939         }
 940
 941         if (data->fannr) {
 942                 if (FAN_CONFIG_MONITOR(data->fan_conf, 0)) {
 943                         device_create_file(&new_client->dev,
 944                                            &dev_attr_fan1_input);
 945                         device_create_file(&new_client->dev,
 946                                            &dev_attr_fan1_min);
 947                         device_create_file(&new_client->dev,
 948                                            &dev_attr_fan1_div);
 949                         device_create_file(&new_client->dev,
 950                                            &dev_attr_fan1_status);
 951                 }
 952
 953                 if (FAN_CONFIG_MONITOR(data->fan_conf, 1)) {
 954                         device_create_file(&new_client->dev,
 955                                            &dev_attr_fan2_input);
 956                         device_create_file(&new_client->dev,
 957                                            &dev_attr_fan2_min);
 958                         device_create_file(&new_client->dev,
 959                                            &dev_attr_fan2_div);
 960                         device_create_file(&new_client->dev,
 961                                            &dev_attr_fan2_status);
 962                 }
 963
 964                 if (FAN_CONFIG_CONTROL(data->fan_conf, 0))
 965                         device_create_file(&new_client->dev, &dev_attr_pwm1);
 966                 if (FAN_CONFIG_CONTROL(data->fan_conf, 1))
 967                         device_create_file(&new_client->dev, &dev_attr_pwm2);
 968         }
 969         if (data->fannr == 3) {
 970                 if (FAN_CONFIG_MONITOR(data->fan_conf, 2)) {
 971                         device_create_file(&new_client->dev,
 972                                            &dev_attr_fan3_input);
 973                         device_create_file(&new_client->dev,
 974                                            &dev_attr_fan3_min);
 975                         device_create_file(&new_client->dev,
 976                                            &dev_attr_fan3_div);
 977                         device_create_file(&new_client->dev,
 978                                            &dev_attr_fan3_status);
 979                 }
 980
 981                 if (FAN_CONFIG_CONTROL(data->fan_conf, 2))
 982                         device_create_file(&new_client->dev, &dev_attr_pwm3);
 983         }
 984
 985         return 0;
 986
 987 ERROR3:
 988         i2c_detach_client(new_client);
 989 ERROR2:
 990         for (i = 0; i < 3; i++) {
 991                 if (data->address[i]) {
 992                         release_region(data->address[i], PC87360_EXTENT);
 993                 }
 994         }
 995 ERROR1:
 996         kfree(data);
 997         return err;
 998 }
 999
1000 static int pc87360_detach_client(struct i2c_client *client)
1001 {
1002         struct pc87360_data *data = i2c_get_clientdata(client);
1003         int i;
1004
1005         hwmon_device_unregister(data->class_dev);
1006
1007         if ((i = i2c_detach_client(client))) {
1008                 dev_err(&client->dev, "Client deregistration failed, "
1009                         "client not detached.\n");
1010                 return i;
1011         }
1012
1013         for (i = 0; i < 3; i++) {
1014                 if (data->address[i]) {
1015                         release_region(data->address[i], PC87360_EXTENT);
1016                 }
1017         }
1018         kfree(data);
1019
1020         return 0;
1021 }
1022
1023 /* ldi is the logical device index
1024    bank is for voltages and temperatures only */
1025 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1026                               u8 reg)
1027 {
1028         int res;
1029
1030         down(&(data->lock));
1031         if (bank != NO_BANK)
1032                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1033         res = inb_p(data->address[ldi] + reg);
1034         up(&(data->lock));
1035
1036         return res;
1037 }
1038
1039 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1040                                 u8 reg, u8 value)
1041 {
1042         down(&(data->lock));
1043         if (bank != NO_BANK)
1044                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1045         outb_p(value, data->address[ldi] + reg);
1046         up(&(data->lock));
1047 }
1048
1049 static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
1050 {
1051         struct pc87360_data *data = i2c_get_clientdata(client);
1052         int i, nr;
1053         const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1054         const u8 init_temp[3] = { 2, 2, 1 };
1055         u8 reg;
1056
1057         if (init >= 2 && data->innr) {
1058                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1059                                          PC87365_REG_IN_CONVRATE);
1060                 dev_info(&client->dev, "VLM conversion set to "
1061                          "1s period, 160us delay\n");
1062                 pc87360_write_value(data, LD_IN, NO_BANK,
1063                                     PC87365_REG_IN_CONVRATE,
1064                                     (reg & 0xC0) | 0x11);
1065         }
1066
1067         nr = data->innr < 11 ? data->innr : 11;
1068         for (i=0; i<nr; i++) {
1069                 if (init >= init_in[i]) {
1070                         /* Forcibly enable voltage channel */
1071                         reg = pc87360_read_value(data, LD_IN, i,
1072                                                  PC87365_REG_IN_STATUS);
1073                         if (!(reg & 0x01)) {
1074                                 dev_dbg(&client->dev, "Forcibly "
1075                                         "enabling in%d\n", i);
1076                                 pc87360_write_value(data, LD_IN, i,
1077                                                     PC87365_REG_IN_STATUS,
1078                                                     (reg & 0x68) | 0x87);
1079                         }
1080                 }
1081         }
1082
1083         /* We can't blindly trust the Super-I/O space configuration bit,
1084            most BIOS won't set it properly */
1085         for (i=11; i<data->innr; i++) {
1086                 reg = pc87360_read_value(data, LD_IN, i,
1087                                          PC87365_REG_TEMP_STATUS);
1088                 use_thermistors = use_thermistors || (reg & 0x01);
1089         }
1090
1091         i = use_thermistors ? 2 : 0;
1092         for (; i<data->tempnr; i++) {
1093                 if (init >= init_temp[i]) {
1094                         /* Forcibly enable temperature channel */
1095                         reg = pc87360_read_value(data, LD_TEMP, i,
1096                                                  PC87365_REG_TEMP_STATUS);
1097                         if (!(reg & 0x01)) {
1098                                 dev_dbg(&client->dev, "Forcibly "
1099                                         "enabling temp%d\n", i+1);
1100                                 pc87360_write_value(data, LD_TEMP, i,
1101                                                     PC87365_REG_TEMP_STATUS,
1102                                                     0xCF);
1103                         }
1104                 }
1105         }
1106
1107         if (use_thermistors) {
1108                 for (i=11; i<data->innr; i++) {
1109                         if (init >= init_in[i]) {
1110                                 /* The pin may already be used by thermal
1111                                    diodes */
1112                                 reg = pc87360_read_value(data, LD_TEMP,
1113                                       (i-11)/2, PC87365_REG_TEMP_STATUS);
1114                                 if (reg & 0x01) {
1115                                         dev_dbg(&client->dev, "Skipping "
1116                                                 "temp%d, pin already in use "
1117                                                 "by temp%d\n", i-7, (i-11)/2);
1118                                         continue;
1119                                 }
1120
1121                                 /* Forcibly enable thermistor channel */
1122                                 reg = pc87360_read_value(data, LD_IN, i,
1123                                                          PC87365_REG_IN_STATUS);
1124                                 if (!(reg & 0x01)) {
1125                                         dev_dbg(&client->dev, "Forcibly "
1126                                                 "enabling temp%d\n", i-7);
1127                                         pc87360_write_value(data, LD_IN, i,
1128                                                 PC87365_REG_TEMP_STATUS,
1129                                                 (reg & 0x60) | 0x8F);
1130                                 }
1131                         }
1132                 }
1133         }
1134
1135         if (data->innr) {
1136                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1137                                          PC87365_REG_IN_CONFIG);
1138                 if (reg & 0x01) {
1139                         dev_dbg(&client->dev, "Forcibly "
1140                                 "enabling monitoring (VLM)\n");
1141                         pc87360_write_value(data, LD_IN, NO_BANK,
1142                                             PC87365_REG_IN_CONFIG,
1143                                             reg & 0xFE);
1144                 }
1145         }
1146
1147         if (data->tempnr) {
1148                 reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1149                                          PC87365_REG_TEMP_CONFIG);
1150                 if (reg & 0x01) {
1151                         dev_dbg(&client->dev, "Forcibly enabling "
1152                                 "monitoring (TMS)\n");
1153                         pc87360_write_value(data, LD_TEMP, NO_BANK,
1154                                             PC87365_REG_TEMP_CONFIG,
1155                                             reg & 0xFE);
1156                 }
1157
1158                 if (init >= 2) {
1159                         /* Chip config as documented by National Semi. */
1160                         pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1161                         /* We voluntarily omit the bank here, in case the
1162                            sequence itself matters. It shouldn't be a problem,
1163                            since nobody else is supposed to access the
1164                            device at that point. */
1165                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1166                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1167                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1168                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1169                 }
1170         }
1171 }
1172
1173 static void pc87360_autodiv(struct i2c_client *client, int nr)
1174 {
1175         struct pc87360_data *data = i2c_get_clientdata(client);
1176         u8 old_min = data->fan_min[nr];
1177
1178         /* Increase clock divider if needed and possible */
1179         if ((data->fan_status[nr] & 0x04) /* overflow flag */
1180          || (data->fan[nr] >= 224)) { /* next to overflow */
1181                 if ((data->fan_status[nr] & 0x60) != 0x60) {
1182                         data->fan_status[nr] += 0x20;
1183                         data->fan_min[nr] >>= 1;
1184                         data->fan[nr] >>= 1;
1185                         dev_dbg(&client->dev, "Increasing "
1186                                 "clock divider to %d for fan %d\n",
1187                                 FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
1188                 }
1189         } else {
1190                 /* Decrease clock divider if possible */
1191                 while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1192                  && data->fan[nr] < 85 /* bad accuracy */
1193                  && (data->fan_status[nr] & 0x60) != 0x00) {
1194                         data->fan_status[nr] -= 0x20;
1195                         data->fan_min[nr] <<= 1;
1196                         data->fan[nr] <<= 1;
1197                         dev_dbg(&client->dev, "Decreasing "
1198                                 "clock divider to %d for fan %d\n",
1199                                 FAN_DIV_FROM_REG(data->fan_status[nr]),
1200                                 nr+1);
1201                 }
1202         }
1203
1204         /* Write new fan min if it changed */
1205         if (old_min != data->fan_min[nr]) {
1206                 pc87360_write_value(data, LD_FAN, NO_BANK,
1207                                     PC87360_REG_FAN_MIN(nr),
1208                                     data->fan_min[nr]);
1209         }
1210 }
1211
1212 static struct pc87360_data *pc87360_update_device(struct device *dev)
1213 {
1214         struct i2c_client *client = to_i2c_client(dev);
1215         struct pc87360_data *data = i2c_get_clientdata(client);
1216         u8 i;
1217
1218         down(&data->update_lock);
1219
1220         if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1221                 dev_dbg(&client->dev, "Data update\n");
1222
1223                 /* Fans */
1224                 for (i = 0; i < data->fannr; i++) {
1225                         if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1226                                 data->fan_status[i] =
1227                                         pc87360_read_value(data, LD_FAN,
1228                                         NO_BANK, PC87360_REG_FAN_STATUS(i));
1229                                 data->fan[i] = pc87360_read_value(data, LD_FAN,
1230                                                NO_BANK, PC87360_REG_FAN(i));
1231                                 data->fan_min[i] = pc87360_read_value(data,
1232                                                    LD_FAN, NO_BANK,
1233                                                    PC87360_REG_FAN_MIN(i));
1234                                 /* Change clock divider if needed */
1235                                 pc87360_autodiv(client, i);
1236                                 /* Clear bits and write new divider */
1237                                 pc87360_write_value(data, LD_FAN, NO_BANK,
1238                                                     PC87360_REG_FAN_STATUS(i),
1239                                                     data->fan_status[i]);
1240                         }
1241                         if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1242                                 data->pwm[i] = pc87360_read_value(data, LD_FAN,
1243                                                NO_BANK, PC87360_REG_PWM(i));
1244                 }
1245
1246                 /* Voltages */
1247                 for (i = 0; i < data->innr; i++) {
1248                         data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1249                                              PC87365_REG_IN_STATUS);
1250                         /* Clear bits */
1251                         pc87360_write_value(data, LD_IN, i,
1252                                             PC87365_REG_IN_STATUS,
1253                                             data->in_status[i]);
1254                         if ((data->in_status[i] & 0x81) == 0x81) {
1255                                 data->in[i] = pc87360_read_value(data, LD_IN,
1256                                               i, PC87365_REG_IN);
1257                         }
1258                         if (data->in_status[i] & 0x01) {
1259                                 data->in_min[i] = pc87360_read_value(data,
1260                                                   LD_IN, i,
1261                                                   PC87365_REG_IN_MIN);
1262                                 data->in_max[i] = pc87360_read_value(data,
1263                                                   LD_IN, i,
1264                                                   PC87365_REG_IN_MAX);
1265                                 if (i >= 11)
1266                                         data->in_crit[i-11] =
1267                                                 pc87360_read_value(data, LD_IN,
1268                                                 i, PC87365_REG_TEMP_CRIT);
1269                         }
1270                 }
1271                 if (data->innr) {
1272                         data->in_alarms = pc87360_read_value(data, LD_IN,
1273                                           NO_BANK, PC87365_REG_IN_ALARMS1)
1274                                         | ((pc87360_read_value(data, LD_IN,
1275                                             NO_BANK, PC87365_REG_IN_ALARMS2)
1276                                             & 0x07) << 8);
1277                         data->vid = (data->vid_conf & 0xE0) ?
1278                                     pc87360_read_value(data, LD_IN,
1279                                     NO_BANK, PC87365_REG_VID) : 0x1F;
1280                 }
1281
1282                 /* Temperatures */
1283                 for (i = 0; i < data->tempnr; i++) {
1284                         data->temp_status[i] = pc87360_read_value(data,
1285                                                LD_TEMP, i,
1286                                                PC87365_REG_TEMP_STATUS);
1287                         /* Clear bits */
1288                         pc87360_write_value(data, LD_TEMP, i,
1289                                             PC87365_REG_TEMP_STATUS,
1290                                             data->temp_status[i]);
1291                         if ((data->temp_status[i] & 0x81) == 0x81) {
1292                                 data->temp[i] = pc87360_read_value(data,
1293                                                 LD_TEMP, i,
1294                                                 PC87365_REG_TEMP);
1295                         }
1296                         if (data->temp_status[i] & 0x01) {
1297                                 data->temp_min[i] = pc87360_read_value(data,
1298                                                     LD_TEMP, i,
1299                                                     PC87365_REG_TEMP_MIN);
1300                                 data->temp_max[i] = pc87360_read_value(data,
1301                                                     LD_TEMP, i,
1302                                                     PC87365_REG_TEMP_MAX);
1303                                 data->temp_crit[i] = pc87360_read_value(data,
1304                                                      LD_TEMP, i,
1305                                                      PC87365_REG_TEMP_CRIT);
1306                         }
1307                 }
1308                 if (data->tempnr) {
1309                         data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1310                                             NO_BANK, PC87365_REG_TEMP_ALARMS)
1311                                             & 0x3F;
1312                 }
1313
1314                 data->last_updated = jiffies;
1315                 data->valid = 1;
1316         }
1317
1318         up(&data->update_lock);
1319
1320         return data;
1321 }
1322
1323 static int __init pc87360_init(void)
1324 {
1325         int i;
1326
1327         if (pc87360_find(0x2e, &devid, extra_isa)
1328          && pc87360_find(0x4e, &devid, extra_isa)) {
1329                 printk(KERN_WARNING "pc87360: PC8736x not detected, "
1330                        "module not inserted.\n");
1331                 return -ENODEV;
1332         }
1333
1334         /* Arbitrarily pick one of the addresses */
1335         for (i = 0; i < 3; i++) {
1336                 if (extra_isa[i] != 0x0000) {
1337                         normal_isa[0] = extra_isa[i];
1338                         break;
1339                 }
1340         }
1341
1342         if (normal_isa[0] == 0x0000) {
1343                 printk(KERN_WARNING "pc87360: No active logical device, "
1344                        "module not inserted.\n");
1345                 return -ENODEV;
1346         }
1347
1348         return i2c_isa_add_driver(&pc87360_driver);
1349 }
1350
1351 static void __exit pc87360_exit(void)
1352 {
1353         i2c_isa_del_driver(&pc87360_driver);
1354 }
1355
1356
1357 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1358 MODULE_DESCRIPTION("PC8736x hardware monitor");
1359 MODULE_LICENSE("GPL");
1360
1361 module_init(pc87360_init);
1362 module_exit(pc87360_exit);