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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-sensor.h>
  42 #include <linux/i2c-vid.h>
  43 #include <asm/io.h>
  44
  45 static unsigned short normal_i2c[] = { I2C_CLIENT_END };
  46 static unsigned int normal_isa[] = { 0, I2C_CLIENT_ISA_END };
  47 static struct i2c_force_data forces[] = {{ NULL }};
  48 static u8 devid;
  49 static unsigned int extra_isa[3];
  50 static u8 confreg[4];
  51
  52 enum chips { any_chip, pc87360, pc87363, pc87364, pc87365, pc87366 };
  53 static struct i2c_address_data addr_data = {
  54         .normal_i2c             = normal_i2c,
  55         .normal_isa             = normal_isa,
  56         .forces                 = forces,
  57 };
  58
  59 static int init = 1;
  60 module_param(init, int, 0);
  61 MODULE_PARM_DESC(init,
  62  "Chip initialization level:\n"
  63  " 0: None\n"
  64  "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
  65  " 2: Forcibly enable all voltage and temperature channels, except in9\n"
  66  " 3: Forcibly enable all voltage and temperature channels, including in9");
  67
  68 /*
  69  * Super-I/O registers and operations
  70  */
  71
  72 #define DEV     0x07    /* Register: Logical device select */
  73 #define DEVID   0x20    /* Register: Device ID */
  74 #define ACT     0x30    /* Register: Device activation */
  75 #define BASE    0x60    /* Register: Base address */
  76
  77 #define FSCM    0x09    /* Logical device: fans */
  78 #define VLM     0x0d    /* Logical device: voltages */
  79 #define TMS     0x0e    /* Logical device: temperatures */
  80 static const u8 logdev[3] = { FSCM, VLM, TMS };
  81
  82 #define LD_FAN          0
  83 #define LD_IN           1
  84 #define LD_TEMP         2
  85
  86 static inline void superio_outb(int sioaddr, int reg, int val)
  87 {
  88         outb(reg, sioaddr);
  89         outb(val, sioaddr+1);
  90 }
  91
  92 static inline int superio_inb(int sioaddr, int reg)
  93 {
  94         outb(reg, sioaddr);
  95         return inb(sioaddr+1);
  96 }
  97
  98 static inline void superio_exit(int sioaddr)
  99 {
 100         outb(0x02, sioaddr);
 101         outb(0x02, sioaddr+1);
 102 }
 103
 104 /*
 105  * Logical devices
 106  */
 107
 108 #define PC87360_EXTENT          0x10
 109 #define PC87365_REG_BANK        0x09
 110 #define NO_BANK                 0xff
 111
 112 /*
 113  * Fan registers and conversions
 114  */
 115
 116 /* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
 117 #define PC87360_REG_PRESCALE(nr)        (0x00 + 2 * (nr))
 118 #define PC87360_REG_PWM(nr)             (0x01 + 2 * (nr))
 119 #define PC87360_REG_FAN_MIN(nr)         (0x06 + 3 * (nr))
 120 #define PC87360_REG_FAN(nr)             (0x07 + 3 * (nr))
 121 #define PC87360_REG_FAN_STATUS(nr)      (0x08 + 3 * (nr))
 122
 123 #define FAN_FROM_REG(val,div)           ((val) == 0 ? 0: \
 124                                          480000 / ((val)*(div)))
 125 #define FAN_TO_REG(val,div)             ((val) <= 100 ? 0 : \
 126                                          480000 / ((val)*(div)))
 127 #define FAN_DIV_FROM_REG(val)           (1 << ((val >> 5) & 0x03))
 128 #define FAN_STATUS_FROM_REG(val)        ((val) & 0x07)
 129
 130 #define FAN_CONFIG_MONITOR(val,nr)      (((val) >> (2 + nr * 3)) & 1)
 131 #define FAN_CONFIG_CONTROL(val,nr)      (((val) >> (3 + nr * 3)) & 1)
 132 #define FAN_CONFIG_INVERT(val,nr)       (((val) >> (4 + nr * 3)) & 1)
 133
 134 #define PWM_FROM_REG(val,inv)           ((inv) ? 255 - (val) : (val))
 135 static inline u8 PWM_TO_REG(int val, int inv)
 136 {
 137         if (inv)
 138                 val = 255 - val;
 139         if (val < 0)
 140                 return 0;
 141         if (val > 255)
 142                 return 255;
 143         return val;
 144 }
 145
 146 /*
 147  * Voltage registers and conversions
 148  */
 149
 150 #define PC87365_REG_IN_CONVRATE         0x07
 151 #define PC87365_REG_IN_CONFIG           0x08
 152 #define PC87365_REG_IN                  0x0B
 153 #define PC87365_REG_IN_MIN              0x0D
 154 #define PC87365_REG_IN_MAX              0x0C
 155 #define PC87365_REG_IN_STATUS           0x0A
 156 #define PC87365_REG_IN_ALARMS1          0x00
 157 #define PC87365_REG_IN_ALARMS2          0x01
 158 #define PC87365_REG_VID                 0x06
 159
 160 #define IN_FROM_REG(val,ref)            (((val) * (ref) + 128) / 256)
 161 #define IN_TO_REG(val,ref)              ((val) < 0 ? 0 : \
 162                                          (val)*256 >= (ref)*255 ? 255: \
 163                                          ((val) * 256 + (ref)/2) / (ref))
 164
 165 /*
 166  * Temperature registers and conversions
 167  */
 168
 169 #define PC87365_REG_TEMP_CONFIG         0x08
 170 #define PC87365_REG_TEMP                0x0B
 171 #define PC87365_REG_TEMP_MIN            0x0D
 172 #define PC87365_REG_TEMP_MAX            0x0C
 173 #define PC87365_REG_TEMP_CRIT           0x0E
 174 #define PC87365_REG_TEMP_STATUS         0x0A
 175 #define PC87365_REG_TEMP_ALARMS         0x00
 176
 177 #define TEMP_FROM_REG(val)              ((val) * 1000)
 178 #define TEMP_TO_REG(val)                ((val) < -55000 ? -55 : \
 179                                          (val) > 127000 ? 127 : \
 180                                          (val) < 0 ? ((val) - 500) / 1000 : \
 181                                          ((val) + 500) / 1000)
 182
 183 /*
 184  * Client data (each client gets its own)
 185  */
 186
 187 struct pc87360_data {
 188         struct i2c_client client;
 189         struct semaphore lock;
 190         struct semaphore update_lock;
 191         char valid;             /* !=0 if following fields are valid */
 192         unsigned long last_updated;     /* In jiffies */
 193
 194         int address[3];
 195
 196         u8 fannr, innr, tempnr;
 197
 198         u8 fan[3];              /* Register value */
 199         u8 fan_min[3];          /* Register value */
 200         u8 fan_status[3];       /* Register value */
 201         u8 pwm[3];              /* Register value */
 202         u16 fan_conf;           /* Configuration register values, combined */
 203
 204         u16 in_vref;            /* 1 mV/bit */
 205         u8 in[14];              /* Register value */
 206         u8 in_min[14];          /* Register value */
 207         u8 in_max[14];          /* Register value */
 208         u8 in_crit[3];          /* Register value */
 209         u8 in_status[14];       /* Register value */
 210         u16 in_alarms;          /* Register values, combined, masked */
 211         u8 vid_conf;            /* Configuration register value */
 212         u8 vrm;
 213         u8 vid;                 /* Register value */
 214
 215         s8 temp[3];             /* Register value */
 216         s8 temp_min[3];         /* Register value */
 217         s8 temp_max[3];         /* Register value */
 218         s8 temp_crit[3];        /* Register value */
 219         u8 temp_status[3];      /* Register value */
 220         u8 temp_alarms;         /* Register value, masked */
 221 };
 222
 223 /*
 224  * Functions declaration
 225  */
 226
 227 static int pc87360_attach_adapter(struct i2c_adapter *adapter);
 228 static int pc87360_detect(struct i2c_adapter *adapter, int address, int kind);
 229 static int pc87360_detach_client(struct i2c_client *client);
 230
 231 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
 232                               u8 reg);
 233 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
 234                                 u8 reg, u8 value);
 235 static void pc87360_init_client(struct i2c_client *client, int use_thermistors);
 236 static struct pc87360_data *pc87360_update_device(struct device *dev);
 237
 238 /*
 239  * Driver data (common to all clients)
 240  */
 241
 242 static struct i2c_driver pc87360_driver = {
 243         .owner          = THIS_MODULE,
 244         .name           = "pc87360",
 245         .flags          = I2C_DF_NOTIFY,
 246         .attach_adapter = pc87360_attach_adapter,
 247         .detach_client  = pc87360_detach_client,
 248 };
 249
 250 /*
 251  * Sysfs stuff
 252  */
 253
 254 static ssize_t set_fan_min(struct device *dev, const char *buf,
 255         size_t count, int nr)
 256 {
 257         struct i2c_client *client = to_i2c_client(dev);
 258         struct pc87360_data *data = i2c_get_clientdata(client);
 259         long fan_min = simple_strtol(buf, NULL, 10);
 260
 261         down(&data->update_lock);
 262         fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[nr]));
 263
 264         /* If it wouldn't fit, change clock divisor */
 265         while (fan_min > 255
 266             && (data->fan_status[nr] & 0x60) != 0x60) {
 267                 fan_min >>= 1;
 268                 data->fan[nr] >>= 1;
 269                 data->fan_status[nr] += 0x20;
 270         }
 271         data->fan_min[nr] = fan_min > 255 ? 255 : fan_min;
 272         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(nr),
 273                             data->fan_min[nr]);
 274
 275         /* Write new divider, preserve alarm bits */
 276         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(nr),
 277                             data->fan_status[nr] & 0xF9);
 278         up(&data->update_lock);
 279
 280         return count;
 281 }
 282
 283 #define show_and_set_fan(offset) \
 284 static ssize_t show_fan##offset##_input(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[offset-1], \
 288                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
 289 } \
 290 static ssize_t show_fan##offset##_min(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", FAN_FROM_REG(data->fan_min[offset-1], \
 294                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
 295 } \
 296 static ssize_t show_fan##offset##_div(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_DIV_FROM_REG(data->fan_status[offset-1])); \
 301 } \
 302 static ssize_t show_fan##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 303 { \
 304         struct pc87360_data *data = pc87360_update_device(dev); \
 305         return sprintf(buf, "%u\n", \
 306                        FAN_STATUS_FROM_REG(data->fan_status[offset-1])); \
 307 } \
 308 static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 309         size_t count) \
 310 { \
 311         return set_fan_min(dev, buf, count, offset-1); \
 312 } \
 313 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
 314         show_fan##offset##_input, NULL); \
 315 static DEVICE_ATTR(fan##offset##_min, S_IWUSR | S_IRUGO, \
 316         show_fan##offset##_min, set_fan##offset##_min); \
 317 static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \
 318         show_fan##offset##_div, NULL); \
 319 static DEVICE_ATTR(fan##offset##_status, S_IRUGO, \
 320         show_fan##offset##_status, NULL);
 321 show_and_set_fan(1)
 322 show_and_set_fan(2)
 323 show_and_set_fan(3)
 324
 325 #define show_and_set_pwm(offset) \
 326 static ssize_t show_pwm##offset(struct device *dev, struct device_attribute *attr, char *buf) \
 327 { \
 328         struct pc87360_data *data = pc87360_update_device(dev); \
 329         return sprintf(buf, "%u\n", \
 330                        PWM_FROM_REG(data->pwm[offset-1], \
 331                                     FAN_CONFIG_INVERT(data->fan_conf, \
 332                                                       offset-1))); \
 333 } \
 334 static ssize_t set_pwm##offset(struct device *dev, struct device_attribute *attr, const char *buf, \
 335         size_t count) \
 336 { \
 337         struct i2c_client *client = to_i2c_client(dev); \
 338         struct pc87360_data *data = i2c_get_clientdata(client); \
 339         long val = simple_strtol(buf, NULL, 10); \
 340  \
 341         down(&data->update_lock); \
 342         data->pwm[offset-1] = PWM_TO_REG(val, \
 343                               FAN_CONFIG_INVERT(data->fan_conf, offset-1)); \
 344         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(offset-1), \
 345                             data->pwm[offset-1]); \
 346         up(&data->update_lock); \
 347         return count; \
 348 } \
 349 static DEVICE_ATTR(pwm##offset, S_IWUSR | S_IRUGO, \
 350         show_pwm##offset, set_pwm##offset);
 351 show_and_set_pwm(1)
 352 show_and_set_pwm(2)
 353 show_and_set_pwm(3)
 354
 355 #define show_and_set_in(offset) \
 356 static ssize_t show_in##offset##_input(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[offset], \
 360                        data->in_vref)); \
 361 } \
 362 static ssize_t show_in##offset##_min(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_min[offset], \
 366                        data->in_vref)); \
 367 } \
 368 static ssize_t show_in##offset##_max(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", IN_FROM_REG(data->in_max[offset], \
 372                        data->in_vref)); \
 373 } \
 374 static ssize_t show_in##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 375 { \
 376         struct pc87360_data *data = pc87360_update_device(dev); \
 377         return sprintf(buf, "%u\n", data->in_status[offset]); \
 378 } \
 379 static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 380         size_t count) \
 381 { \
 382         struct i2c_client *client = to_i2c_client(dev); \
 383         struct pc87360_data *data = i2c_get_clientdata(client); \
 384         long val = simple_strtol(buf, NULL, 10); \
 385  \
 386         down(&data->update_lock); \
 387         data->in_min[offset] = IN_TO_REG(val, data->in_vref); \
 388         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MIN, \
 389                             data->in_min[offset]); \
 390         up(&data->update_lock); \
 391         return count; \
 392 } \
 393 static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
 394         size_t count) \
 395 { \
 396         struct i2c_client *client = to_i2c_client(dev); \
 397         struct pc87360_data *data = i2c_get_clientdata(client); \
 398         long val = simple_strtol(buf, NULL, 10); \
 399  \
 400         down(&data->update_lock); \
 401         data->in_max[offset] = IN_TO_REG(val, \
 402                                data->in_vref); \
 403         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MAX, \
 404                             data->in_max[offset]); \
 405         up(&data->update_lock); \
 406         return count; \
 407 } \
 408 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
 409         show_in##offset##_input, NULL); \
 410 static DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \
 411         show_in##offset##_min, set_in##offset##_min); \
 412 static DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \
 413         show_in##offset##_max, set_in##offset##_max); \
 414 static DEVICE_ATTR(in##offset##_status, S_IRUGO, \
 415         show_in##offset##_status, NULL);
 416 show_and_set_in(0)
 417 show_and_set_in(1)
 418 show_and_set_in(2)
 419 show_and_set_in(3)
 420 show_and_set_in(4)
 421 show_and_set_in(5)
 422 show_and_set_in(6)
 423 show_and_set_in(7)
 424 show_and_set_in(8)
 425 show_and_set_in(9)
 426 show_and_set_in(10)
 427
 428 #define show_and_set_therm(offset) \
 429 static ssize_t show_temp##offset##_input(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[offset+7], \
 433                        data->in_vref)); \
 434 } \
 435 static ssize_t show_temp##offset##_min(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_min[offset+7], \
 439                        data->in_vref)); \
 440 } \
 441 static ssize_t show_temp##offset##_max(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_max[offset+7], \
 445                        data->in_vref)); \
 446 } \
 447 static ssize_t show_temp##offset##_crit(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", IN_FROM_REG(data->in_crit[offset-4], \
 451                        data->in_vref)); \
 452 } \
 453 static ssize_t show_temp##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 454 { \
 455         struct pc87360_data *data = pc87360_update_device(dev); \
 456         return sprintf(buf, "%u\n", data->in_status[offset+7]); \
 457 } \
 458 static ssize_t set_temp##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 459         size_t count) \
 460 { \
 461         struct i2c_client *client = to_i2c_client(dev); \
 462         struct pc87360_data *data = i2c_get_clientdata(client); \
 463         long val = simple_strtol(buf, NULL, 10); \
 464  \
 465         down(&data->update_lock); \
 466         data->in_min[offset+7] = IN_TO_REG(val, data->in_vref); \
 467         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MIN, \
 468                             data->in_min[offset+7]); \
 469         up(&data->update_lock); \
 470         return count; \
 471 } \
 472 static ssize_t set_temp##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
 473         size_t count) \
 474 { \
 475         struct i2c_client *client = to_i2c_client(dev); \
 476         struct pc87360_data *data = i2c_get_clientdata(client); \
 477         long val = simple_strtol(buf, NULL, 10); \
 478  \
 479         down(&data->update_lock); \
 480         data->in_max[offset+7] = IN_TO_REG(val, data->in_vref); \
 481         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MAX, \
 482                             data->in_max[offset+7]); \
 483         up(&data->update_lock); \
 484         return count; \
 485 } \
 486 static ssize_t set_temp##offset##_crit(struct device *dev, struct device_attribute *attr, const char *buf, \
 487         size_t count) \
 488 { \
 489         struct i2c_client *client = to_i2c_client(dev); \
 490         struct pc87360_data *data = i2c_get_clientdata(client); \
 491         long val = simple_strtol(buf, NULL, 10); \
 492  \
 493         down(&data->update_lock); \
 494         data->in_crit[offset-4] = IN_TO_REG(val, data->in_vref); \
 495         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_CRIT, \
 496                             data->in_crit[offset-4]); \
 497         up(&data->update_lock); \
 498         return count; \
 499 } \
 500 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
 501         show_temp##offset##_input, NULL); \
 502 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
 503         show_temp##offset##_min, set_temp##offset##_min); \
 504 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
 505         show_temp##offset##_max, set_temp##offset##_max); \
 506 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
 507         show_temp##offset##_crit, set_temp##offset##_crit); \
 508 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
 509         show_temp##offset##_status, NULL);
 510 show_and_set_therm(4)
 511 show_and_set_therm(5)
 512 show_and_set_therm(6)
 513
 514 static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
 515 {
 516         struct pc87360_data *data = pc87360_update_device(dev);
 517         return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
 518 }
 519 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
 520
 521 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
 522 {
 523         struct pc87360_data *data = pc87360_update_device(dev);
 524         return sprintf(buf, "%u\n", data->vrm);
 525 }
 526 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 527 {
 528         struct i2c_client *client = to_i2c_client(dev);
 529         struct pc87360_data *data = i2c_get_clientdata(client);
 530         data->vrm = simple_strtoul(buf, NULL, 10);
 531         return count;
 532 }
 533 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
 534
 535 static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr, char *buf)
 536 {
 537         struct pc87360_data *data = pc87360_update_device(dev);
 538         return sprintf(buf, "%u\n", data->in_alarms);
 539 }
 540 static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
 541
 542 #define show_and_set_temp(offset) \
 543 static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \
 544 { \
 545         struct pc87360_data *data = pc87360_update_device(dev); \
 546         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \
 547 } \
 548 static ssize_t show_temp##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
 549 { \
 550         struct pc87360_data *data = pc87360_update_device(dev); \
 551         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[offset-1])); \
 552 } \
 553 static ssize_t show_temp##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \
 554 { \
 555         struct pc87360_data *data = pc87360_update_device(dev); \
 556         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[offset-1])); \
 557 }\
 558 static ssize_t show_temp##offset##_crit(struct device *dev, struct device_attribute *attr, char *buf) \
 559 { \
 560         struct pc87360_data *data = pc87360_update_device(dev); \
 561         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[offset-1])); \
 562 }\
 563 static ssize_t show_temp##offset##_status(struct device *dev, struct device_attribute *attr, char *buf) \
 564 { \
 565         struct pc87360_data *data = pc87360_update_device(dev); \
 566         return sprintf(buf, "%d\n", data->temp_status[offset-1]); \
 567 }\
 568 static ssize_t set_temp##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
 569         size_t count) \
 570 { \
 571         struct i2c_client *client = to_i2c_client(dev); \
 572         struct pc87360_data *data = i2c_get_clientdata(client); \
 573         long val = simple_strtol(buf, NULL, 10); \
 574  \
 575         down(&data->update_lock); \
 576         data->temp_min[offset-1] = TEMP_TO_REG(val); \
 577         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MIN, \
 578                             data->temp_min[offset-1]); \
 579         up(&data->update_lock); \
 580         return count; \
 581 } \
 582 static ssize_t set_temp##offset##_max(struct device *dev, struct device_attribute *attr, const char *buf, \
 583         size_t count) \
 584 { \
 585         struct i2c_client *client = to_i2c_client(dev); \
 586         struct pc87360_data *data = i2c_get_clientdata(client); \
 587         long val = simple_strtol(buf, NULL, 10); \
 588  \
 589         down(&data->update_lock); \
 590         data->temp_max[offset-1] = TEMP_TO_REG(val); \
 591         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MAX, \
 592                             data->temp_max[offset-1]); \
 593         up(&data->update_lock); \
 594         return count; \
 595 } \
 596 static ssize_t set_temp##offset##_crit(struct device *dev, struct device_attribute *attr, const char *buf, \
 597         size_t count) \
 598 { \
 599         struct i2c_client *client = to_i2c_client(dev); \
 600         struct pc87360_data *data = i2c_get_clientdata(client); \
 601         long val = simple_strtol(buf, NULL, 10); \
 602  \
 603         down(&data->update_lock); \
 604         data->temp_crit[offset-1] = TEMP_TO_REG(val); \
 605         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_CRIT, \
 606                             data->temp_crit[offset-1]); \
 607         up(&data->update_lock); \
 608         return count; \
 609 } \
 610 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
 611         show_temp##offset##_input, NULL); \
 612 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
 613         show_temp##offset##_min, set_temp##offset##_min); \
 614 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
 615         show_temp##offset##_max, set_temp##offset##_max); \
 616 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
 617         show_temp##offset##_crit, set_temp##offset##_crit); \
 618 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
 619         show_temp##offset##_status, NULL);
 620 show_and_set_temp(1)
 621 show_and_set_temp(2)
 622 show_and_set_temp(3)
 623
 624 static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *attr, char *buf)
 625 {
 626         struct pc87360_data *data = pc87360_update_device(dev);
 627         return sprintf(buf, "%u\n", data->temp_alarms);
 628 }
 629 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
 630
 631 /*
 632  * Device detection, registration and update
 633  */
 634
 635 static int pc87360_attach_adapter(struct i2c_adapter *adapter)
 636 {
 637         return i2c_detect(adapter, &addr_data, pc87360_detect);
 638 }
 639
 640 static int pc87360_find(int sioaddr, u8 *devid, int *address)
 641 {
 642         u16 val;
 643         int i;
 644         int nrdev; /* logical device count */
 645
 646         /* No superio_enter */
 647
 648         /* Identify device */
 649         val = superio_inb(sioaddr, DEVID);
 650         switch (val) {
 651         case 0xE1: /* PC87360 */
 652         case 0xE8: /* PC87363 */
 653         case 0xE4: /* PC87364 */
 654                 nrdev = 1;
 655                 break;
 656         case 0xE5: /* PC87365 */
 657         case 0xE9: /* PC87366 */
 658                 nrdev = 3;
 659                 break;
 660         default:
 661                 superio_exit(sioaddr);
 662                 return -ENODEV;
 663         }
 664         /* Remember the device id */
 665         *devid = val;
 666
 667         for (i = 0; i < nrdev; i++) {
 668                 /* select logical device */
 669                 superio_outb(sioaddr, DEV, logdev[i]);
 670
 671                 val = superio_inb(sioaddr, ACT);
 672                 if (!(val & 0x01)) {
 673                         printk(KERN_INFO "pc87360: Device 0x%02x not "
 674                                "activated\n", logdev[i]);
 675                         continue;
 676                 }
 677
 678                 val = (superio_inb(sioaddr, BASE) << 8)
 679                     | superio_inb(sioaddr, BASE + 1);
 680                 if (!val) {
 681                         printk(KERN_INFO "pc87360: Base address not set for "
 682                                "device 0x%02x\n", logdev[i]);
 683                         continue;
 684                 }
 685
 686                 address[i] = val;
 687
 688                 if (i==0) { /* Fans */
 689                         confreg[0] = superio_inb(sioaddr, 0xF0);
 690                         confreg[1] = superio_inb(sioaddr, 0xF1);
 691
 692 #ifdef DEBUG
 693                         printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
 694                                "ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
 695                                (confreg[0]>>3)&1, (confreg[0]>>4)&1);
 696                         printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
 697                                "ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
 698                                (confreg[0]>>6)&1, (confreg[0]>>7)&1);
 699                         printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
 700                                "ctrl=%d inv=%d\n", confreg[1]&1,
 701                                (confreg[1]>>1)&1, (confreg[1]>>2)&1);
 702 #endif
 703                 } else if (i==1) { /* Voltages */
 704                         /* Are we using thermistors? */
 705                         if (*devid == 0xE9) { /* PC87366 */
 706                                 /* These registers are not logical-device
 707                                    specific, just that we won't need them if
 708                                    we don't use the VLM device */
 709                                 confreg[2] = superio_inb(sioaddr, 0x2B);
 710                                 confreg[3] = superio_inb(sioaddr, 0x25);
 711
 712                                 if (confreg[2] & 0x40) {
 713                                         printk(KERN_INFO "pc87360: Using "
 714                                                "thermistors for temperature "
 715                                                "monitoring\n");
 716                                 }
 717                                 if (confreg[3] & 0xE0) {
 718                                         printk(KERN_INFO "pc87360: VID "
 719                                                "inputs routed (mode %u)\n",
 720                                                confreg[3] >> 5);
 721                                 }
 722                         }
 723                 }
 724         }
 725
 726         superio_exit(sioaddr);
 727         return 0;
 728 }
 729
 730 /* We don't really care about the address.
 731    Read from extra_isa instead. */
 732 int pc87360_detect(struct i2c_adapter *adapter, int address, int kind)
 733 {
 734         int i;
 735         struct i2c_client *new_client;
 736         struct pc87360_data *data;
 737         int err = 0;
 738         const char *name = "pc87360";
 739         int use_thermistors = 0;
 740
 741         if (!i2c_is_isa_adapter(adapter))
 742                 return -ENODEV;
 743
 744         if (!(data = kmalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
 745                 return -ENOMEM;
 746         memset(data, 0x00, sizeof(struct pc87360_data));
 747
 748         new_client = &data->client;
 749         i2c_set_clientdata(new_client, data);
 750         new_client->addr = address;
 751         init_MUTEX(&data->lock);
 752         new_client->adapter = adapter;
 753         new_client->driver = &pc87360_driver;
 754         new_client->flags = 0;
 755
 756         data->fannr = 2;
 757         data->innr = 0;
 758         data->tempnr = 0;
 759
 760         switch (devid) {
 761         case 0xe8:
 762                 name = "pc87363";
 763                 break;
 764         case 0xe4:
 765                 name = "pc87364";
 766                 data->fannr = 3;
 767                 break;
 768         case 0xe5:
 769                 name = "pc87365";
 770                 data->fannr = extra_isa[0] ? 3 : 0;
 771                 data->innr = extra_isa[1] ? 11 : 0;
 772                 data->tempnr = extra_isa[2] ? 2 : 0;
 773                 break;
 774         case 0xe9:
 775                 name = "pc87366";
 776                 data->fannr = extra_isa[0] ? 3 : 0;
 777                 data->innr = extra_isa[1] ? 14 : 0;
 778                 data->tempnr = extra_isa[2] ? 3 : 0;
 779                 break;
 780         }
 781
 782         strcpy(new_client->name, name);
 783         data->valid = 0;
 784         init_MUTEX(&data->update_lock);
 785
 786         for (i = 0; i < 3; i++) {
 787                 if (((data->address[i] = extra_isa[i]))
 788                  && !request_region(extra_isa[i], PC87360_EXTENT,
 789                                     pc87360_driver.name)) {
 790                         dev_err(&new_client->dev, "Region 0x%x-0x%x already "
 791                                 "in use!\n", extra_isa[i],
 792                                 extra_isa[i]+PC87360_EXTENT-1);
 793                         for (i--; i >= 0; i--)
 794                                 release_region(extra_isa[i], PC87360_EXTENT);
 795                         err = -EBUSY;
 796                         goto ERROR1;
 797                 }
 798         }
 799
 800         /* Retrieve the fans configuration from Super-I/O space */
 801         if (data->fannr)
 802                 data->fan_conf = confreg[0] | (confreg[1] << 8);
 803
 804         if ((err = i2c_attach_client(new_client)))
 805                 goto ERROR2;
 806
 807         /* Use the correct reference voltage
 808            Unless both the VLM and the TMS logical devices agree to
 809            use an external Vref, the internal one is used. */
 810         if (data->innr) {
 811                 i = pc87360_read_value(data, LD_IN, NO_BANK,
 812                                        PC87365_REG_IN_CONFIG);
 813                 if (data->tempnr) {
 814                         i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
 815                                                 PC87365_REG_TEMP_CONFIG);
 816                 }
 817                 data->in_vref = (i&0x02) ? 3025 : 2966;
 818                 dev_dbg(&new_client->dev, "Using %s reference voltage\n",
 819                         (i&0x02) ? "external" : "internal");
 820
 821                 data->vid_conf = confreg[3];
 822                 data->vrm = 90;
 823         }
 824
 825         /* Fan clock dividers may be needed before any data is read */
 826         for (i = 0; i < data->fannr; i++) {
 827                 if (FAN_CONFIG_MONITOR(data->fan_conf, i))
 828                         data->fan_status[i] = pc87360_read_value(data,
 829                                               LD_FAN, NO_BANK,
 830                                               PC87360_REG_FAN_STATUS(i));
 831         }
 832
 833         if (init > 0) {
 834                 if (devid == 0xe9 && data->address[1]) /* PC87366 */
 835                         use_thermistors = confreg[2] & 0x40;
 836
 837                 pc87360_init_client(new_client, use_thermistors);
 838         }
 839
 840         /* Register sysfs hooks */
 841         if (data->innr) {
 842                 device_create_file(&new_client->dev, &dev_attr_in0_input);
 843                 device_create_file(&new_client->dev, &dev_attr_in1_input);
 844                 device_create_file(&new_client->dev, &dev_attr_in2_input);
 845                 device_create_file(&new_client->dev, &dev_attr_in3_input);
 846                 device_create_file(&new_client->dev, &dev_attr_in4_input);
 847                 device_create_file(&new_client->dev, &dev_attr_in5_input);
 848                 device_create_file(&new_client->dev, &dev_attr_in6_input);
 849                 device_create_file(&new_client->dev, &dev_attr_in7_input);
 850                 device_create_file(&new_client->dev, &dev_attr_in8_input);
 851                 device_create_file(&new_client->dev, &dev_attr_in9_input);
 852                 device_create_file(&new_client->dev, &dev_attr_in10_input);
 853                 device_create_file(&new_client->dev, &dev_attr_in0_min);
 854                 device_create_file(&new_client->dev, &dev_attr_in1_min);
 855                 device_create_file(&new_client->dev, &dev_attr_in2_min);
 856                 device_create_file(&new_client->dev, &dev_attr_in3_min);
 857                 device_create_file(&new_client->dev, &dev_attr_in4_min);
 858                 device_create_file(&new_client->dev, &dev_attr_in5_min);
 859                 device_create_file(&new_client->dev, &dev_attr_in6_min);
 860                 device_create_file(&new_client->dev, &dev_attr_in7_min);
 861                 device_create_file(&new_client->dev, &dev_attr_in8_min);
 862                 device_create_file(&new_client->dev, &dev_attr_in9_min);
 863                 device_create_file(&new_client->dev, &dev_attr_in10_min);
 864                 device_create_file(&new_client->dev, &dev_attr_in0_max);
 865                 device_create_file(&new_client->dev, &dev_attr_in1_max);
 866                 device_create_file(&new_client->dev, &dev_attr_in2_max);
 867                 device_create_file(&new_client->dev, &dev_attr_in3_max);
 868                 device_create_file(&new_client->dev, &dev_attr_in4_max);
 869                 device_create_file(&new_client->dev, &dev_attr_in5_max);
 870                 device_create_file(&new_client->dev, &dev_attr_in6_max);
 871                 device_create_file(&new_client->dev, &dev_attr_in7_max);
 872                 device_create_file(&new_client->dev, &dev_attr_in8_max);
 873                 device_create_file(&new_client->dev, &dev_attr_in9_max);
 874                 device_create_file(&new_client->dev, &dev_attr_in10_max);
 875                 device_create_file(&new_client->dev, &dev_attr_in0_status);
 876                 device_create_file(&new_client->dev, &dev_attr_in1_status);
 877                 device_create_file(&new_client->dev, &dev_attr_in2_status);
 878                 device_create_file(&new_client->dev, &dev_attr_in3_status);
 879                 device_create_file(&new_client->dev, &dev_attr_in4_status);
 880                 device_create_file(&new_client->dev, &dev_attr_in5_status);
 881                 device_create_file(&new_client->dev, &dev_attr_in6_status);
 882                 device_create_file(&new_client->dev, &dev_attr_in7_status);
 883                 device_create_file(&new_client->dev, &dev_attr_in8_status);
 884                 device_create_file(&new_client->dev, &dev_attr_in9_status);
 885                 device_create_file(&new_client->dev, &dev_attr_in10_status);
 886
 887                 device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
 888                 device_create_file(&new_client->dev, &dev_attr_vrm);
 889                 device_create_file(&new_client->dev, &dev_attr_alarms_in);
 890         }
 891
 892         if (data->tempnr) {
 893                 device_create_file(&new_client->dev, &dev_attr_temp1_input);
 894                 device_create_file(&new_client->dev, &dev_attr_temp2_input);
 895                 device_create_file(&new_client->dev, &dev_attr_temp1_min);
 896                 device_create_file(&new_client->dev, &dev_attr_temp2_min);
 897                 device_create_file(&new_client->dev, &dev_attr_temp1_max);
 898                 device_create_file(&new_client->dev, &dev_attr_temp2_max);
 899                 device_create_file(&new_client->dev, &dev_attr_temp1_crit);
 900                 device_create_file(&new_client->dev, &dev_attr_temp2_crit);
 901                 device_create_file(&new_client->dev, &dev_attr_temp1_status);
 902                 device_create_file(&new_client->dev, &dev_attr_temp2_status);
 903
 904                 device_create_file(&new_client->dev, &dev_attr_alarms_temp);
 905         }
 906         if (data->tempnr == 3) {
 907                 device_create_file(&new_client->dev, &dev_attr_temp3_input);
 908                 device_create_file(&new_client->dev, &dev_attr_temp3_min);
 909                 device_create_file(&new_client->dev, &dev_attr_temp3_max);
 910                 device_create_file(&new_client->dev, &dev_attr_temp3_crit);
 911                 device_create_file(&new_client->dev, &dev_attr_temp3_status);
 912         }
 913         if (data->innr == 14) {
 914                 device_create_file(&new_client->dev, &dev_attr_temp4_input);
 915                 device_create_file(&new_client->dev, &dev_attr_temp5_input);
 916                 device_create_file(&new_client->dev, &dev_attr_temp6_input);
 917                 device_create_file(&new_client->dev, &dev_attr_temp4_min);
 918                 device_create_file(&new_client->dev, &dev_attr_temp5_min);
 919                 device_create_file(&new_client->dev, &dev_attr_temp6_min);
 920                 device_create_file(&new_client->dev, &dev_attr_temp4_max);
 921                 device_create_file(&new_client->dev, &dev_attr_temp5_max);
 922                 device_create_file(&new_client->dev, &dev_attr_temp6_max);
 923                 device_create_file(&new_client->dev, &dev_attr_temp4_crit);
 924                 device_create_file(&new_client->dev, &dev_attr_temp5_crit);
 925                 device_create_file(&new_client->dev, &dev_attr_temp6_crit);
 926                 device_create_file(&new_client->dev, &dev_attr_temp4_status);
 927                 device_create_file(&new_client->dev, &dev_attr_temp5_status);
 928                 device_create_file(&new_client->dev, &dev_attr_temp6_status);
 929         }
 930
 931         if (data->fannr) {
 932                 if (FAN_CONFIG_MONITOR(data->fan_conf, 0)) {
 933                         device_create_file(&new_client->dev,
 934                                            &dev_attr_fan1_input);
 935                         device_create_file(&new_client->dev,
 936                                            &dev_attr_fan1_min);
 937                         device_create_file(&new_client->dev,
 938                                            &dev_attr_fan1_div);
 939                         device_create_file(&new_client->dev,
 940                                            &dev_attr_fan1_status);
 941                 }
 942
 943                 if (FAN_CONFIG_MONITOR(data->fan_conf, 1)) {
 944                         device_create_file(&new_client->dev,
 945                                            &dev_attr_fan2_input);
 946                         device_create_file(&new_client->dev,
 947                                            &dev_attr_fan2_min);
 948                         device_create_file(&new_client->dev,
 949                                            &dev_attr_fan2_div);
 950                         device_create_file(&new_client->dev,
 951                                            &dev_attr_fan2_status);
 952                 }
 953
 954                 if (FAN_CONFIG_CONTROL(data->fan_conf, 0))
 955                         device_create_file(&new_client->dev, &dev_attr_pwm1);
 956                 if (FAN_CONFIG_CONTROL(data->fan_conf, 1))
 957                         device_create_file(&new_client->dev, &dev_attr_pwm2);
 958         }
 959         if (data->fannr == 3) {
 960                 if (FAN_CONFIG_MONITOR(data->fan_conf, 2)) {
 961                         device_create_file(&new_client->dev,
 962                                            &dev_attr_fan3_input);
 963                         device_create_file(&new_client->dev,
 964                                            &dev_attr_fan3_min);
 965                         device_create_file(&new_client->dev,
 966                                            &dev_attr_fan3_div);
 967                         device_create_file(&new_client->dev,
 968                                            &dev_attr_fan3_status);
 969                 }
 970
 971                 if (FAN_CONFIG_CONTROL(data->fan_conf, 2))
 972                         device_create_file(&new_client->dev, &dev_attr_pwm3);
 973         }
 974
 975         return 0;
 976
 977 ERROR2:
 978         for (i = 0; i < 3; i++) {
 979                 if (data->address[i]) {
 980                         release_region(data->address[i], PC87360_EXTENT);
 981                 }
 982         }
 983 ERROR1:
 984         kfree(data);
 985         return err;
 986 }
 987
 988 static int pc87360_detach_client(struct i2c_client *client)
 989 {
 990         struct pc87360_data *data = i2c_get_clientdata(client);
 991         int i;
 992
 993         if ((i = i2c_detach_client(client))) {
 994                 dev_err(&client->dev, "Client deregistration failed, "
 995                         "client not detached.\n");
 996                 return i;
 997         }
 998
 999         for (i = 0; i < 3; i++) {
1000                 if (data->address[i]) {
1001                         release_region(data->address[i], PC87360_EXTENT);
1002                 }
1003         }
1004         kfree(data);
1005
1006         return 0;
1007 }
1008
1009 /* ldi is the logical device index
1010    bank is for voltages and temperatures only */
1011 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1012                               u8 reg)
1013 {
1014         int res;
1015
1016         down(&(data->lock));
1017         if (bank != NO_BANK)
1018                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1019         res = inb_p(data->address[ldi] + reg);
1020         up(&(data->lock));
1021
1022         return res;
1023 }
1024
1025 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1026                                 u8 reg, u8 value)
1027 {
1028         down(&(data->lock));
1029         if (bank != NO_BANK)
1030                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1031         outb_p(value, data->address[ldi] + reg);
1032         up(&(data->lock));
1033 }
1034
1035 static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
1036 {
1037         struct pc87360_data *data = i2c_get_clientdata(client);
1038         int i, nr;
1039         const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1040         const u8 init_temp[3] = { 2, 2, 1 };
1041         u8 reg;
1042
1043         if (init >= 2 && data->innr) {
1044                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1045                                          PC87365_REG_IN_CONVRATE);
1046                 dev_info(&client->dev, "VLM conversion set to"
1047                          "1s period, 160us delay\n");
1048                 pc87360_write_value(data, LD_IN, NO_BANK,
1049                                     PC87365_REG_IN_CONVRATE,
1050                                     (reg & 0xC0) | 0x11);
1051         }
1052
1053         nr = data->innr < 11 ? data->innr : 11;
1054         for (i=0; i<nr; i++) {
1055                 if (init >= init_in[i]) {
1056                         /* Forcibly enable voltage channel */
1057                         reg = pc87360_read_value(data, LD_IN, i,
1058                                                  PC87365_REG_IN_STATUS);
1059                         if (!(reg & 0x01)) {
1060                                 dev_dbg(&client->dev, "Forcibly "
1061                                         "enabling in%d\n", i);
1062                                 pc87360_write_value(data, LD_IN, i,
1063                                                     PC87365_REG_IN_STATUS,
1064                                                     (reg & 0x68) | 0x87);
1065                         }
1066                 }
1067         }
1068
1069         /* We can't blindly trust the Super-I/O space configuration bit,
1070            most BIOS won't set it properly */
1071         for (i=11; i<data->innr; i++) {
1072                 reg = pc87360_read_value(data, LD_IN, i,
1073                                          PC87365_REG_TEMP_STATUS);
1074                 use_thermistors = use_thermistors || (reg & 0x01);
1075         }
1076
1077         i = use_thermistors ? 2 : 0;
1078         for (; i<data->tempnr; i++) {
1079                 if (init >= init_temp[i]) {
1080                         /* Forcibly enable temperature channel */
1081                         reg = pc87360_read_value(data, LD_TEMP, i,
1082                                                  PC87365_REG_TEMP_STATUS);
1083                         if (!(reg & 0x01)) {
1084                                 dev_dbg(&client->dev, "Forcibly "
1085                                         "enabling temp%d\n", i+1);
1086                                 pc87360_write_value(data, LD_TEMP, i,
1087                                                     PC87365_REG_TEMP_STATUS,
1088                                                     0xCF);
1089                         }
1090                 }
1091         }
1092
1093         if (use_thermistors) {
1094                 for (i=11; i<data->innr; i++) {
1095                         if (init >= init_in[i]) {
1096                                 /* The pin may already be used by thermal
1097                                    diodes */
1098                                 reg = pc87360_read_value(data, LD_TEMP,
1099                                       (i-11)/2, PC87365_REG_TEMP_STATUS);
1100                                 if (reg & 0x01) {
1101                                         dev_dbg(&client->dev, "Skipping "
1102                                                 "temp%d, pin already in use "
1103                                                 "by temp%d\n", i-7, (i-11)/2);
1104                                         continue;
1105                                 }
1106
1107                                 /* Forcibly enable thermistor channel */
1108                                 reg = pc87360_read_value(data, LD_IN, i,
1109                                                          PC87365_REG_IN_STATUS);
1110                                 if (!(reg & 0x01)) {
1111                                         dev_dbg(&client->dev, "Forcibly "
1112                                                 "enabling temp%d\n", i-7);
1113                                         pc87360_write_value(data, LD_IN, i,
1114                                                 PC87365_REG_TEMP_STATUS,
1115                                                 (reg & 0x60) | 0x8F);
1116                                 }
1117                         }
1118                 }
1119         }
1120
1121         if (data->innr) {
1122                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1123                                          PC87365_REG_IN_CONFIG);
1124                 if (reg & 0x01) {
1125                         dev_dbg(&client->dev, "Forcibly "
1126                                 "enabling monitoring (VLM)\n");
1127                         pc87360_write_value(data, LD_IN, NO_BANK,
1128                                             PC87365_REG_IN_CONFIG,
1129                                             reg & 0xFE);
1130                 }
1131         }
1132
1133         if (data->tempnr) {
1134                 reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1135                                          PC87365_REG_TEMP_CONFIG);
1136                 if (reg & 0x01) {
1137                         dev_dbg(&client->dev, "Forcibly enabling "
1138                                 "monitoring (TMS)\n");
1139                         pc87360_write_value(data, LD_TEMP, NO_BANK,
1140                                             PC87365_REG_TEMP_CONFIG,
1141                                             reg & 0xFE);
1142                 }
1143
1144                 if (init >= 2) {
1145                         /* Chip config as documented by National Semi. */
1146                         pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1147                         /* We voluntarily omit the bank here, in case the
1148                            sequence itself matters. It shouldn't be a problem,
1149                            since nobody else is supposed to access the
1150                            device at that point. */
1151                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1152                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1153                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1154                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1155                 }
1156         }
1157 }
1158
1159 static void pc87360_autodiv(struct i2c_client *client, int nr)
1160 {
1161         struct pc87360_data *data = i2c_get_clientdata(client);
1162         u8 old_min = data->fan_min[nr];
1163
1164         /* Increase clock divider if needed and possible */
1165         if ((data->fan_status[nr] & 0x04) /* overflow flag */
1166          || (data->fan[nr] >= 224)) { /* next to overflow */
1167                 if ((data->fan_status[nr] & 0x60) != 0x60) {
1168                         data->fan_status[nr] += 0x20;
1169                         data->fan_min[nr] >>= 1;
1170                         data->fan[nr] >>= 1;
1171                         dev_dbg(&client->dev, "Increasing "
1172                                 "clock divider to %d for fan %d\n",
1173                                 FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
1174                 }
1175         } else {
1176                 /* Decrease clock divider if possible */
1177                 while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1178                  && data->fan[nr] < 85 /* bad accuracy */
1179                  && (data->fan_status[nr] & 0x60) != 0x00) {
1180                         data->fan_status[nr] -= 0x20;
1181                         data->fan_min[nr] <<= 1;
1182                         data->fan[nr] <<= 1;
1183                         dev_dbg(&client->dev, "Decreasing "
1184                                 "clock divider to %d for fan %d\n",
1185                                 FAN_DIV_FROM_REG(data->fan_status[nr]),
1186                                 nr+1);
1187                 }
1188         }
1189
1190         /* Write new fan min if it changed */
1191         if (old_min != data->fan_min[nr]) {
1192                 pc87360_write_value(data, LD_FAN, NO_BANK,
1193                                     PC87360_REG_FAN_MIN(nr),
1194                                     data->fan_min[nr]);
1195         }
1196 }
1197
1198 static struct pc87360_data *pc87360_update_device(struct device *dev)
1199 {
1200         struct i2c_client *client = to_i2c_client(dev);
1201         struct pc87360_data *data = i2c_get_clientdata(client);
1202         u8 i;
1203
1204         down(&data->update_lock);
1205
1206         if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1207                 dev_dbg(&client->dev, "Data update\n");
1208
1209                 /* Fans */
1210                 for (i = 0; i < data->fannr; i++) {
1211                         if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1212                                 data->fan_status[i] =
1213                                         pc87360_read_value(data, LD_FAN,
1214                                         NO_BANK, PC87360_REG_FAN_STATUS(i));
1215                                 data->fan[i] = pc87360_read_value(data, LD_FAN,
1216                                                NO_BANK, PC87360_REG_FAN(i));
1217                                 data->fan_min[i] = pc87360_read_value(data,
1218                                                    LD_FAN, NO_BANK,
1219                                                    PC87360_REG_FAN_MIN(i));
1220                                 /* Change clock divider if needed */
1221                                 pc87360_autodiv(client, i);
1222                                 /* Clear bits and write new divider */
1223                                 pc87360_write_value(data, LD_FAN, NO_BANK,
1224                                                     PC87360_REG_FAN_STATUS(i),
1225                                                     data->fan_status[i]);
1226                         }
1227                         if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1228                                 data->pwm[i] = pc87360_read_value(data, LD_FAN,
1229                                                NO_BANK, PC87360_REG_PWM(i));
1230                 }
1231
1232                 /* Voltages */
1233                 for (i = 0; i < data->innr; i++) {
1234                         data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1235                                              PC87365_REG_IN_STATUS);
1236                         /* Clear bits */
1237                         pc87360_write_value(data, LD_IN, i,
1238                                             PC87365_REG_IN_STATUS,
1239                                             data->in_status[i]);
1240                         if ((data->in_status[i] & 0x81) == 0x81) {
1241                                 data->in[i] = pc87360_read_value(data, LD_IN,
1242                                               i, PC87365_REG_IN);
1243                         }
1244                         if (data->in_status[i] & 0x01) {
1245                                 data->in_min[i] = pc87360_read_value(data,
1246                                                   LD_IN, i,
1247                                                   PC87365_REG_IN_MIN);
1248                                 data->in_max[i] = pc87360_read_value(data,
1249                                                   LD_IN, i,
1250                                                   PC87365_REG_IN_MAX);
1251                                 if (i >= 11)
1252                                         data->in_crit[i-11] =
1253                                                 pc87360_read_value(data, LD_IN,
1254                                                 i, PC87365_REG_TEMP_CRIT);
1255                         }
1256                 }
1257                 if (data->innr) {
1258                         data->in_alarms = pc87360_read_value(data, LD_IN,
1259                                           NO_BANK, PC87365_REG_IN_ALARMS1)
1260                                         | ((pc87360_read_value(data, LD_IN,
1261                                             NO_BANK, PC87365_REG_IN_ALARMS2)
1262                                             & 0x07) << 8);
1263                         data->vid = (data->vid_conf & 0xE0) ?
1264                                     pc87360_read_value(data, LD_IN,
1265                                     NO_BANK, PC87365_REG_VID) : 0x1F;
1266                 }
1267
1268                 /* Temperatures */
1269                 for (i = 0; i < data->tempnr; i++) {
1270                         data->temp_status[i] = pc87360_read_value(data,
1271                                                LD_TEMP, i,
1272                                                PC87365_REG_TEMP_STATUS);
1273                         /* Clear bits */
1274                         pc87360_write_value(data, LD_TEMP, i,
1275                                             PC87365_REG_TEMP_STATUS,
1276                                             data->temp_status[i]);
1277                         if ((data->temp_status[i] & 0x81) == 0x81) {
1278                                 data->temp[i] = pc87360_read_value(data,
1279                                                 LD_TEMP, i,
1280                                                 PC87365_REG_TEMP);
1281                         }
1282                         if (data->temp_status[i] & 0x01) {
1283                                 data->temp_min[i] = pc87360_read_value(data,
1284                                                     LD_TEMP, i,
1285                                                     PC87365_REG_TEMP_MIN);
1286                                 data->temp_max[i] = pc87360_read_value(data,
1287                                                     LD_TEMP, i,
1288                                                     PC87365_REG_TEMP_MAX);
1289                                 data->temp_crit[i] = pc87360_read_value(data,
1290                                                      LD_TEMP, i,
1291                                                      PC87365_REG_TEMP_CRIT);
1292                         }
1293                 }
1294                 if (data->tempnr) {
1295                         data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1296                                             NO_BANK, PC87365_REG_TEMP_ALARMS)
1297                                             & 0x3F;
1298                 }
1299
1300                 data->last_updated = jiffies;
1301                 data->valid = 1;
1302         }
1303
1304         up(&data->update_lock);
1305
1306         return data;
1307 }
1308
1309 static int __init pc87360_init(void)
1310 {
1311         int i;
1312
1313         if (pc87360_find(0x2e, &devid, extra_isa)
1314          && pc87360_find(0x4e, &devid, extra_isa)) {
1315                 printk(KERN_WARNING "pc87360: PC8736x not detected, "
1316                        "module not inserted.\n");
1317                 return -ENODEV;
1318         }
1319
1320         /* Arbitrarily pick one of the addresses */
1321         for (i = 0; i < 3; i++) {
1322                 if (extra_isa[i] != 0x0000) {
1323                         normal_isa[0] = extra_isa[i];
1324                         break;
1325                 }
1326         }
1327
1328         if (normal_isa[0] == 0x0000) {
1329                 printk(KERN_WARNING "pc87360: No active logical device, "
1330                        "module not inserted.\n");
1331                 return -ENODEV;
1332         }
1333
1334         return i2c_add_driver(&pc87360_driver);
1335 }
1336
1337 static void __exit pc87360_exit(void)
1338 {
1339         i2c_del_driver(&pc87360_driver);
1340 }
1341
1342
1343 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1344 MODULE_DESCRIPTION("PC8736x hardware monitor");
1345 MODULE_LICENSE("GPL");
1346
1347 module_init(pc87360_init);
1348 module_exit(pc87360_exit);