drivers/i2c/chips/pc87360.c

   1 /*
   2  *  pc87360.c - Part of lm_sensors, Linux kernel modules
   3  *              for hardware monitoring
   4  *  Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
   5  *
   6  *  Copied from smsc47m1.c:
   7  *  Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  *  Supports the following chips:
  24  *
  25  *  Chip        #vin    #fan    #pwm    #temp   devid
  26  *  PC87360     -       2       2       -       0xE1
  27  *  PC87363     -       2       2       -       0xE8
  28  *  PC87364     -       3       3       -       0xE4
  29  *  PC87365     11      3       3       2       0xE5
  30  *  PC87366     11      3       3       3-4     0xE9
  31  *
  32  *  This driver assumes that no more than one chip is present, and one of
  33  *  the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
  34  */
  35
  36 #include <linux/config.h>
  37 #include <linux/module.h>
  38 #include <linux/init.h>
  39 #include <linux/slab.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         fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[nr]));
 262
 263         /* If it wouldn't fit, change clock divisor */
 264         while (fan_min > 255
 265             && (data->fan_status[nr] & 0x60) != 0x60) {
 266                 fan_min >>= 1;
 267                 data->fan[nr] >>= 1;
 268                 data->fan_status[nr] += 0x20;
 269         }
 270         data->fan_min[nr] = fan_min > 255 ? 255 : fan_min;
 271         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(nr),
 272                             data->fan_min[nr]);
 273
 274         /* Write new divider, preserve alarm bits */
 275         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(nr),
 276                             data->fan_status[nr] & 0xF9);
 277
 278         return count;
 279 }
 280
 281 #define show_and_set_fan(offset) \
 282 static ssize_t show_fan##offset##_input(struct device *dev, char *buf) \
 283 { \
 284         struct pc87360_data *data = pc87360_update_device(dev); \
 285         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[offset-1], \
 286                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
 287 } \
 288 static ssize_t show_fan##offset##_min(struct device *dev, char *buf) \
 289 { \
 290         struct pc87360_data *data = pc87360_update_device(dev); \
 291         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[offset-1], \
 292                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
 293 } \
 294 static ssize_t show_fan##offset##_div(struct device *dev, char *buf) \
 295 { \
 296         struct pc87360_data *data = pc87360_update_device(dev); \
 297         return sprintf(buf, "%u\n", \
 298                        FAN_DIV_FROM_REG(data->fan_status[offset-1])); \
 299 } \
 300 static ssize_t show_fan##offset##_status(struct device *dev, char *buf) \
 301 { \
 302         struct pc87360_data *data = pc87360_update_device(dev); \
 303         return sprintf(buf, "%u\n", \
 304                        FAN_STATUS_FROM_REG(data->fan_status[offset-1])); \
 305 } \
 306 static ssize_t set_fan##offset##_min(struct device *dev, const char *buf, \
 307         size_t count) \
 308 { \
 309         return set_fan_min(dev, buf, count, offset-1); \
 310 } \
 311 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
 312         show_fan##offset##_input, NULL); \
 313 static DEVICE_ATTR(fan##offset##_min, S_IWUSR | S_IRUGO, \
 314         show_fan##offset##_min, set_fan##offset##_min); \
 315 static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \
 316         show_fan##offset##_div, NULL); \
 317 static DEVICE_ATTR(fan##offset##_status, S_IRUGO, \
 318         show_fan##offset##_status, NULL);
 319 show_and_set_fan(1)
 320 show_and_set_fan(2)
 321 show_and_set_fan(3)
 322
 323 #define show_and_set_pwm(offset) \
 324 static ssize_t show_pwm##offset(struct device *dev, char *buf) \
 325 { \
 326         struct pc87360_data *data = pc87360_update_device(dev); \
 327         return sprintf(buf, "%u\n", \
 328                        PWM_FROM_REG(data->pwm[offset-1], \
 329                                     FAN_CONFIG_INVERT(data->fan_conf, \
 330                                                       offset-1))); \
 331 } \
 332 static ssize_t set_pwm##offset(struct device *dev, const char *buf, \
 333         size_t count) \
 334 { \
 335         struct i2c_client *client = to_i2c_client(dev); \
 336         struct pc87360_data *data = i2c_get_clientdata(client); \
 337         long val = simple_strtol(buf, NULL, 10); \
 338         data->pwm[offset-1] = PWM_TO_REG(val, \
 339                               FAN_CONFIG_INVERT(data->fan_conf, offset-1)); \
 340         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(offset-1), \
 341                             data->pwm[offset-1]); \
 342         return count; \
 343 } \
 344 static DEVICE_ATTR(pwm##offset, S_IWUSR | S_IRUGO, \
 345         show_pwm##offset, set_pwm##offset);
 346 show_and_set_pwm(1)
 347 show_and_set_pwm(2)
 348 show_and_set_pwm(3)
 349
 350 #define show_and_set_in(offset) \
 351 static ssize_t show_in##offset##_input(struct device *dev, char *buf) \
 352 { \
 353         struct pc87360_data *data = pc87360_update_device(dev); \
 354         return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \
 355                        data->in_vref)); \
 356 } \
 357 static ssize_t show_in##offset##_min(struct device *dev, char *buf) \
 358 { \
 359         struct pc87360_data *data = pc87360_update_device(dev); \
 360         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \
 361                        data->in_vref)); \
 362 } \
 363 static ssize_t show_in##offset##_max(struct device *dev, char *buf) \
 364 { \
 365         struct pc87360_data *data = pc87360_update_device(dev); \
 366         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \
 367                        data->in_vref)); \
 368 } \
 369 static ssize_t show_in##offset##_status(struct device *dev, char *buf) \
 370 { \
 371         struct pc87360_data *data = pc87360_update_device(dev); \
 372         return sprintf(buf, "%u\n", data->in_status[offset]); \
 373 } \
 374 static ssize_t set_in##offset##_min(struct device *dev, const char *buf, \
 375         size_t count) \
 376 { \
 377         struct i2c_client *client = to_i2c_client(dev); \
 378         struct pc87360_data *data = i2c_get_clientdata(client); \
 379         long val = simple_strtol(buf, NULL, 10); \
 380         data->in_min[offset] = IN_TO_REG(val, data->in_vref); \
 381         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MIN, \
 382                             data->in_min[offset]); \
 383         return count; \
 384 } \
 385 static ssize_t set_in##offset##_max(struct device *dev, const char *buf, \
 386         size_t count) \
 387 { \
 388         struct i2c_client *client = to_i2c_client(dev); \
 389         struct pc87360_data *data = i2c_get_clientdata(client); \
 390         long val = simple_strtol(buf, NULL, 10); \
 391         data->in_max[offset] = IN_TO_REG(val, \
 392                                data->in_vref); \
 393         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MAX, \
 394                             data->in_max[offset]); \
 395         return count; \
 396 } \
 397 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
 398         show_in##offset##_input, NULL); \
 399 static DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \
 400         show_in##offset##_min, set_in##offset##_min); \
 401 static DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \
 402         show_in##offset##_max, set_in##offset##_max); \
 403 static DEVICE_ATTR(in##offset##_status, S_IRUGO, \
 404         show_in##offset##_status, NULL);
 405 show_and_set_in(0)
 406 show_and_set_in(1)
 407 show_and_set_in(2)
 408 show_and_set_in(3)
 409 show_and_set_in(4)
 410 show_and_set_in(5)
 411 show_and_set_in(6)
 412 show_and_set_in(7)
 413 show_and_set_in(8)
 414 show_and_set_in(9)
 415 show_and_set_in(10)
 416
 417 #define show_and_set_therm(offset) \
 418 static ssize_t show_temp##offset##_input(struct device *dev, char *buf) \
 419 { \
 420         struct pc87360_data *data = pc87360_update_device(dev); \
 421         return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset+7], \
 422                        data->in_vref)); \
 423 } \
 424 static ssize_t show_temp##offset##_min(struct device *dev, char *buf) \
 425 { \
 426         struct pc87360_data *data = pc87360_update_device(dev); \
 427         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset+7], \
 428                        data->in_vref)); \
 429 } \
 430 static ssize_t show_temp##offset##_max(struct device *dev, char *buf) \
 431 { \
 432         struct pc87360_data *data = pc87360_update_device(dev); \
 433         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset+7], \
 434                        data->in_vref)); \
 435 } \
 436 static ssize_t show_temp##offset##_crit(struct device *dev, char *buf) \
 437 { \
 438         struct pc87360_data *data = pc87360_update_device(dev); \
 439         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[offset-4], \
 440                        data->in_vref)); \
 441 } \
 442 static ssize_t show_temp##offset##_status(struct device *dev, char *buf) \
 443 { \
 444         struct pc87360_data *data = pc87360_update_device(dev); \
 445         return sprintf(buf, "%u\n", data->in_status[offset+7]); \
 446 } \
 447 static ssize_t set_temp##offset##_min(struct device *dev, const char *buf, \
 448         size_t count) \
 449 { \
 450         struct i2c_client *client = to_i2c_client(dev); \
 451         struct pc87360_data *data = i2c_get_clientdata(client); \
 452         long val = simple_strtol(buf, NULL, 10); \
 453         data->in_min[offset+7] = IN_TO_REG(val, data->in_vref); \
 454         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MIN, \
 455                             data->in_min[offset+7]); \
 456         return count; \
 457 } \
 458 static ssize_t set_temp##offset##_max(struct device *dev, 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         data->in_max[offset+7] = IN_TO_REG(val, data->in_vref); \
 465         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MAX, \
 466                             data->in_max[offset+7]); \
 467         return count; \
 468 } \
 469 static ssize_t set_temp##offset##_crit(struct device *dev, const char *buf, \
 470         size_t count) \
 471 { \
 472         struct i2c_client *client = to_i2c_client(dev); \
 473         struct pc87360_data *data = i2c_get_clientdata(client); \
 474         long val = simple_strtol(buf, NULL, 10); \
 475         data->in_crit[offset-4] = IN_TO_REG(val, data->in_vref); \
 476         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_CRIT, \
 477                             data->in_crit[offset-4]); \
 478         return count; \
 479 } \
 480 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
 481         show_temp##offset##_input, NULL); \
 482 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
 483         show_temp##offset##_min, set_temp##offset##_min); \
 484 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
 485         show_temp##offset##_max, set_temp##offset##_max); \
 486 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
 487         show_temp##offset##_crit, set_temp##offset##_crit); \
 488 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
 489         show_temp##offset##_status, NULL);
 490 show_and_set_therm(4)
 491 show_and_set_therm(5)
 492 show_and_set_therm(6)
 493
 494 static ssize_t show_vid(struct device *dev, char *buf)
 495 {
 496         struct pc87360_data *data = pc87360_update_device(dev);
 497         return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
 498 }
 499 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
 500
 501 static ssize_t show_vrm(struct device *dev, char *buf)
 502 {
 503         struct pc87360_data *data = pc87360_update_device(dev);
 504         return sprintf(buf, "%u\n", data->vrm);
 505 }
 506 static ssize_t set_vrm(struct device *dev, const char *buf, size_t count)
 507 {
 508         struct i2c_client *client = to_i2c_client(dev);
 509         struct pc87360_data *data = i2c_get_clientdata(client);
 510         data->vrm = simple_strtoul(buf, NULL, 10);
 511         return count;
 512 }
 513 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
 514
 515 static ssize_t show_in_alarms(struct device *dev, char *buf)
 516 {
 517         struct pc87360_data *data = pc87360_update_device(dev);
 518         return sprintf(buf, "%u\n", data->in_alarms);
 519 }
 520 static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
 521
 522 #define show_and_set_temp(offset) \
 523 static ssize_t show_temp##offset##_input(struct device *dev, char *buf) \
 524 { \
 525         struct pc87360_data *data = pc87360_update_device(dev); \
 526         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \
 527 } \
 528 static ssize_t show_temp##offset##_min(struct device *dev, char *buf) \
 529 { \
 530         struct pc87360_data *data = pc87360_update_device(dev); \
 531         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[offset-1])); \
 532 } \
 533 static ssize_t show_temp##offset##_max(struct device *dev, char *buf) \
 534 { \
 535         struct pc87360_data *data = pc87360_update_device(dev); \
 536         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[offset-1])); \
 537 }\
 538 static ssize_t show_temp##offset##_crit(struct device *dev, char *buf) \
 539 { \
 540         struct pc87360_data *data = pc87360_update_device(dev); \
 541         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[offset-1])); \
 542 }\
 543 static ssize_t show_temp##offset##_status(struct device *dev, char *buf) \
 544 { \
 545         struct pc87360_data *data = pc87360_update_device(dev); \
 546         return sprintf(buf, "%d\n", data->temp_status[offset-1]); \
 547 }\
 548 static ssize_t set_temp##offset##_min(struct device *dev, const char *buf, \
 549         size_t count) \
 550 { \
 551         struct i2c_client *client = to_i2c_client(dev); \
 552         struct pc87360_data *data = i2c_get_clientdata(client); \
 553         long val = simple_strtol(buf, NULL, 10); \
 554         data->temp_min[offset-1] = TEMP_TO_REG(val); \
 555         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MIN, \
 556                             data->temp_min[offset-1]); \
 557         return count; \
 558 } \
 559 static ssize_t set_temp##offset##_max(struct device *dev, const char *buf, \
 560         size_t count) \
 561 { \
 562         struct i2c_client *client = to_i2c_client(dev); \
 563         struct pc87360_data *data = i2c_get_clientdata(client); \
 564         long val = simple_strtol(buf, NULL, 10); \
 565         data->temp_max[offset-1] = TEMP_TO_REG(val); \
 566         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MAX, \
 567                             data->temp_max[offset-1]); \
 568         return count; \
 569 } \
 570 static ssize_t set_temp##offset##_crit(struct device *dev, const char *buf, \
 571         size_t count) \
 572 { \
 573         struct i2c_client *client = to_i2c_client(dev); \
 574         struct pc87360_data *data = i2c_get_clientdata(client); \
 575         long val = simple_strtol(buf, NULL, 10); \
 576         data->temp_crit[offset-1] = TEMP_TO_REG(val); \
 577         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_CRIT, \
 578                             data->temp_crit[offset-1]); \
 579         return count; \
 580 } \
 581 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
 582         show_temp##offset##_input, NULL); \
 583 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
 584         show_temp##offset##_min, set_temp##offset##_min); \
 585 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
 586         show_temp##offset##_max, set_temp##offset##_max); \
 587 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
 588         show_temp##offset##_crit, set_temp##offset##_crit); \
 589 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
 590         show_temp##offset##_status, NULL);
 591 show_and_set_temp(1)
 592 show_and_set_temp(2)
 593 show_and_set_temp(3)
 594
 595 static ssize_t show_temp_alarms(struct device *dev, char *buf)
 596 {
 597         struct pc87360_data *data = pc87360_update_device(dev);
 598         return sprintf(buf, "%u\n", data->temp_alarms);
 599 }
 600 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
 601
 602 /*
 603  * Device detection, registration and update
 604  */
 605
 606 static int pc87360_attach_adapter(struct i2c_adapter *adapter)
 607 {
 608         return i2c_detect(adapter, &addr_data, pc87360_detect);
 609 }
 610
 611 static int pc87360_find(int sioaddr, u8 *devid, int *address)
 612 {
 613         u16 val;
 614         int i;
 615         int nrdev; /* logical device count */
 616
 617         /* No superio_enter */
 618
 619         /* Identify device */
 620         val = superio_inb(sioaddr, DEVID);
 621         switch (val) {
 622         case 0xE1: /* PC87360 */
 623         case 0xE8: /* PC87363 */
 624         case 0xE4: /* PC87364 */
 625                 nrdev = 1;
 626                 break;
 627         case 0xE5: /* PC87365 */
 628         case 0xE9: /* PC87366 */
 629                 nrdev = 3;
 630                 break;
 631         default:
 632                 superio_exit(sioaddr);
 633                 return -ENODEV;
 634         }
 635         /* Remember the device id */
 636         *devid = val;
 637
 638         for (i = 0; i < nrdev; i++) {
 639                 /* select logical device */
 640                 superio_outb(sioaddr, DEV, logdev[i]);
 641
 642                 val = superio_inb(sioaddr, ACT);
 643                 if (!(val & 0x01)) {
 644                         printk(KERN_INFO "pc87360: Device 0x%02x not "
 645                                "activated\n", logdev[i]);
 646                         continue;
 647                 }
 648
 649                 val = (superio_inb(sioaddr, BASE) << 8)
 650                     | superio_inb(sioaddr, BASE + 1);
 651                 if (!val) {
 652                         printk(KERN_INFO "pc87360: Base address not set for "
 653                                "device 0x%02x\n", logdev[i]);
 654                         continue;
 655                 }
 656
 657                 address[i] = val;
 658
 659                 if (i==0) { /* Fans */
 660                         confreg[0] = superio_inb(sioaddr, 0xF0);
 661                         confreg[1] = superio_inb(sioaddr, 0xF1);
 662
 663 #ifdef DEBUG
 664                         printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
 665                                "ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
 666                                (confreg[0]>>3)&1, (confreg[0]>>4)&1);
 667                         printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
 668                                "ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
 669                                (confreg[0]>>6)&1, (confreg[0]>>7)&1);
 670                         printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
 671                                "ctrl=%d inv=%d\n", confreg[1]&1,
 672                                (confreg[1]>>1)&1, (confreg[1]>>2)&1);
 673 #endif
 674                 } else if (i==1) { /* Voltages */
 675                         /* Are we using thermistors? */
 676                         if (*devid == 0xE9) { /* PC87366 */
 677                                 /* These registers are not logical-device
 678                                    specific, just that we won't need them if
 679                                    we don't use the VLM device */
 680                                 confreg[2] = superio_inb(sioaddr, 0x2B);
 681                                 confreg[3] = superio_inb(sioaddr, 0x25);
 682
 683                                 if (confreg[2] & 0x40) {
 684                                         printk(KERN_INFO "pc87360: Using "
 685                                                "thermistors for temperature "
 686                                                "monitoring\n");
 687                                 }
 688                                 if (confreg[3] & 0xE0) {
 689                                         printk(KERN_INFO "pc87360: VID "
 690                                                "inputs routed (mode %u)\n",
 691                                                confreg[3] >> 5);
 692                                 }
 693                         }
 694                 }
 695         }
 696
 697         superio_exit(sioaddr);
 698         return 0;
 699 }
 700
 701 /* We don't really care about the address.
 702    Read from extra_isa instead. */
 703 int pc87360_detect(struct i2c_adapter *adapter, int address, int kind)
 704 {
 705         int i;
 706         struct i2c_client *new_client;
 707         struct pc87360_data *data;
 708         int err = 0;
 709         const char *name = "pc87360";
 710         int use_thermistors = 0;
 711
 712         if (!i2c_is_isa_adapter(adapter))
 713                 return -ENODEV;
 714
 715         if (!(data = kmalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
 716                 return -ENOMEM;
 717         memset(data, 0x00, sizeof(struct pc87360_data));
 718
 719         new_client = &data->client;
 720         i2c_set_clientdata(new_client, data);
 721         new_client->addr = address;
 722         init_MUTEX(&data->lock);
 723         new_client->adapter = adapter;
 724         new_client->driver = &pc87360_driver;
 725         new_client->flags = 0;
 726
 727         data->fannr = 2;
 728         data->innr = 0;
 729         data->tempnr = 0;
 730
 731         switch (devid) {
 732         case 0xe8:
 733                 name = "pc87363";
 734                 break;
 735         case 0xe4:
 736                 name = "pc87364";
 737                 data->fannr = 3;
 738                 break;
 739         case 0xe5:
 740                 name = "pc87365";
 741                 data->fannr = extra_isa[0] ? 3 : 0;
 742                 data->innr = extra_isa[1] ? 11 : 0;
 743                 data->tempnr = extra_isa[2] ? 2 : 0;
 744                 break;
 745         case 0xe9:
 746                 name = "pc87366";
 747                 data->fannr = extra_isa[0] ? 3 : 0;
 748                 data->innr = extra_isa[1] ? 14 : 0;
 749                 data->tempnr = extra_isa[2] ? 3 : 0;
 750                 break;
 751         }
 752
 753         strcpy(new_client->name, name);
 754         data->valid = 0;
 755         init_MUTEX(&data->update_lock);
 756
 757         for (i = 0; i < 3; i++) {
 758                 if (((data->address[i] = extra_isa[i]))
 759                  && !request_region(extra_isa[i], PC87360_EXTENT, "pc87360")) {
 760                         dev_err(&new_client->dev, "Region 0x%x-0x%x already "
 761                                 "in use!\n", extra_isa[i],
 762                                 extra_isa[i]+PC87360_EXTENT-1);
 763                         for (i--; i >= 0; i--)
 764                                 release_region(extra_isa[i], PC87360_EXTENT);
 765                         err = -EBUSY;
 766                         goto ERROR1;
 767                 }
 768         }
 769
 770         /* Retrieve the fans configuration from Super-I/O space */
 771         if (data->fannr)
 772                 data->fan_conf = confreg[0] | (confreg[1] << 8);
 773
 774         if ((err = i2c_attach_client(new_client)))
 775                 goto ERROR2;
 776
 777         /* Use the correct reference voltage
 778            Unless both the VLM and the TMS logical devices agree to
 779            use an external Vref, the internal one is used. */
 780         if (data->innr) {
 781                 i = pc87360_read_value(data, LD_IN, NO_BANK,
 782                                        PC87365_REG_IN_CONFIG);
 783                 if (data->tempnr) {
 784                         i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
 785                                                 PC87365_REG_TEMP_CONFIG);
 786                 }
 787                 data->in_vref = (i&0x02) ? 3025 : 2966;
 788                 dev_dbg(&new_client->dev, "Using %s reference voltage\n",
 789                         (i&0x02) ? "external" : "internal");
 790
 791                 data->vid_conf = confreg[3];
 792                 data->vrm = 90;
 793         }
 794
 795         /* Fan clock dividers may be needed before any data is read */
 796         for (i = 0; i < data->fannr; i++) {
 797                 data->fan_status[i] = pc87360_read_value(data, LD_FAN,
 798                                       NO_BANK, PC87360_REG_FAN_STATUS(i));
 799         }
 800
 801         if (init > 0) {
 802                 if (devid == 0xe9 && data->address[1]) /* PC87366 */
 803                         use_thermistors = confreg[2] & 0x40;
 804
 805                 pc87360_init_client(new_client, use_thermistors);
 806         }
 807
 808         /* Register sysfs hooks */
 809         if (data->innr) {
 810                 device_create_file(&new_client->dev, &dev_attr_in0_input);
 811                 device_create_file(&new_client->dev, &dev_attr_in1_input);
 812                 device_create_file(&new_client->dev, &dev_attr_in2_input);
 813                 device_create_file(&new_client->dev, &dev_attr_in3_input);
 814                 device_create_file(&new_client->dev, &dev_attr_in4_input);
 815                 device_create_file(&new_client->dev, &dev_attr_in5_input);
 816                 device_create_file(&new_client->dev, &dev_attr_in6_input);
 817                 device_create_file(&new_client->dev, &dev_attr_in7_input);
 818                 device_create_file(&new_client->dev, &dev_attr_in8_input);
 819                 device_create_file(&new_client->dev, &dev_attr_in9_input);
 820                 device_create_file(&new_client->dev, &dev_attr_in10_input);
 821                 device_create_file(&new_client->dev, &dev_attr_in0_min);
 822                 device_create_file(&new_client->dev, &dev_attr_in1_min);
 823                 device_create_file(&new_client->dev, &dev_attr_in2_min);
 824                 device_create_file(&new_client->dev, &dev_attr_in3_min);
 825                 device_create_file(&new_client->dev, &dev_attr_in4_min);
 826                 device_create_file(&new_client->dev, &dev_attr_in5_min);
 827                 device_create_file(&new_client->dev, &dev_attr_in6_min);
 828                 device_create_file(&new_client->dev, &dev_attr_in7_min);
 829                 device_create_file(&new_client->dev, &dev_attr_in8_min);
 830                 device_create_file(&new_client->dev, &dev_attr_in9_min);
 831                 device_create_file(&new_client->dev, &dev_attr_in10_min);
 832                 device_create_file(&new_client->dev, &dev_attr_in0_max);
 833                 device_create_file(&new_client->dev, &dev_attr_in1_max);
 834                 device_create_file(&new_client->dev, &dev_attr_in2_max);
 835                 device_create_file(&new_client->dev, &dev_attr_in3_max);
 836                 device_create_file(&new_client->dev, &dev_attr_in4_max);
 837                 device_create_file(&new_client->dev, &dev_attr_in5_max);
 838                 device_create_file(&new_client->dev, &dev_attr_in6_max);
 839                 device_create_file(&new_client->dev, &dev_attr_in7_max);
 840                 device_create_file(&new_client->dev, &dev_attr_in8_max);
 841                 device_create_file(&new_client->dev, &dev_attr_in9_max);
 842                 device_create_file(&new_client->dev, &dev_attr_in10_max);
 843                 device_create_file(&new_client->dev, &dev_attr_in0_status);
 844                 device_create_file(&new_client->dev, &dev_attr_in1_status);
 845                 device_create_file(&new_client->dev, &dev_attr_in2_status);
 846                 device_create_file(&new_client->dev, &dev_attr_in3_status);
 847                 device_create_file(&new_client->dev, &dev_attr_in4_status);
 848                 device_create_file(&new_client->dev, &dev_attr_in5_status);
 849                 device_create_file(&new_client->dev, &dev_attr_in6_status);
 850                 device_create_file(&new_client->dev, &dev_attr_in7_status);
 851                 device_create_file(&new_client->dev, &dev_attr_in8_status);
 852                 device_create_file(&new_client->dev, &dev_attr_in9_status);
 853                 device_create_file(&new_client->dev, &dev_attr_in10_status);
 854
 855                 device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
 856                 device_create_file(&new_client->dev, &dev_attr_vrm);
 857                 device_create_file(&new_client->dev, &dev_attr_alarms_in);
 858         }
 859
 860         if (data->tempnr) {
 861                 device_create_file(&new_client->dev, &dev_attr_temp1_input);
 862                 device_create_file(&new_client->dev, &dev_attr_temp2_input);
 863                 device_create_file(&new_client->dev, &dev_attr_temp1_min);
 864                 device_create_file(&new_client->dev, &dev_attr_temp2_min);
 865                 device_create_file(&new_client->dev, &dev_attr_temp1_max);
 866                 device_create_file(&new_client->dev, &dev_attr_temp2_max);
 867                 device_create_file(&new_client->dev, &dev_attr_temp1_crit);
 868                 device_create_file(&new_client->dev, &dev_attr_temp2_crit);
 869                 device_create_file(&new_client->dev, &dev_attr_temp1_status);
 870                 device_create_file(&new_client->dev, &dev_attr_temp2_status);
 871
 872                 device_create_file(&new_client->dev, &dev_attr_alarms_temp);
 873         }
 874         if (data->tempnr == 3) {
 875                 device_create_file(&new_client->dev, &dev_attr_temp3_input);
 876                 device_create_file(&new_client->dev, &dev_attr_temp3_min);
 877                 device_create_file(&new_client->dev, &dev_attr_temp3_max);
 878                 device_create_file(&new_client->dev, &dev_attr_temp3_crit);
 879                 device_create_file(&new_client->dev, &dev_attr_temp3_status);
 880         }
 881         if (data->innr == 14) {
 882                 device_create_file(&new_client->dev, &dev_attr_temp4_input);
 883                 device_create_file(&new_client->dev, &dev_attr_temp5_input);
 884                 device_create_file(&new_client->dev, &dev_attr_temp6_input);
 885                 device_create_file(&new_client->dev, &dev_attr_temp4_min);
 886                 device_create_file(&new_client->dev, &dev_attr_temp5_min);
 887                 device_create_file(&new_client->dev, &dev_attr_temp6_min);
 888                 device_create_file(&new_client->dev, &dev_attr_temp4_max);
 889                 device_create_file(&new_client->dev, &dev_attr_temp5_max);
 890                 device_create_file(&new_client->dev, &dev_attr_temp6_max);
 891                 device_create_file(&new_client->dev, &dev_attr_temp4_crit);
 892                 device_create_file(&new_client->dev, &dev_attr_temp5_crit);
 893                 device_create_file(&new_client->dev, &dev_attr_temp6_crit);
 894                 device_create_file(&new_client->dev, &dev_attr_temp4_status);
 895                 device_create_file(&new_client->dev, &dev_attr_temp5_status);
 896                 device_create_file(&new_client->dev, &dev_attr_temp6_status);
 897         }
 898
 899         if (data->fannr) {
 900                 device_create_file(&new_client->dev, &dev_attr_fan1_input);
 901                 device_create_file(&new_client->dev, &dev_attr_fan2_input);
 902                 device_create_file(&new_client->dev, &dev_attr_fan1_min);
 903                 device_create_file(&new_client->dev, &dev_attr_fan2_min);
 904                 device_create_file(&new_client->dev, &dev_attr_fan1_div);
 905                 device_create_file(&new_client->dev, &dev_attr_fan2_div);
 906                 device_create_file(&new_client->dev, &dev_attr_fan1_status);
 907                 device_create_file(&new_client->dev, &dev_attr_fan2_status);
 908
 909                 if (FAN_CONFIG_CONTROL(data->fan_conf, 0))
 910                         device_create_file(&new_client->dev, &dev_attr_pwm1);
 911                 if (FAN_CONFIG_CONTROL(data->fan_conf, 1))
 912                         device_create_file(&new_client->dev, &dev_attr_pwm2);
 913         }
 914         if (data->fannr == 3) {
 915                 device_create_file(&new_client->dev, &dev_attr_fan3_input);
 916                 device_create_file(&new_client->dev, &dev_attr_fan3_min);
 917                 device_create_file(&new_client->dev, &dev_attr_fan3_div);
 918                 device_create_file(&new_client->dev, &dev_attr_fan3_status);
 919
 920                 if (FAN_CONFIG_CONTROL(data->fan_conf, 2))
 921                         device_create_file(&new_client->dev, &dev_attr_pwm3);
 922         }
 923
 924         return 0;
 925
 926 ERROR2:
 927         for (i = 0; i < 3; i++) {
 928                 if (data->address[i]) {
 929                         release_region(data->address[i], PC87360_EXTENT);
 930                 }
 931         }
 932 ERROR1:
 933         kfree(data);
 934         return err;
 935 }
 936
 937 static int pc87360_detach_client(struct i2c_client *client)
 938 {
 939         struct pc87360_data *data = i2c_get_clientdata(client);
 940         int i;
 941
 942         if ((i = i2c_detach_client(client))) {
 943                 dev_err(&client->dev, "Client deregistration failed, "
 944                         "client not detached.\n");
 945                 return i;
 946         }
 947
 948         for (i = 0; i < 3; i++) {
 949                 if (data->address[i]) {
 950                         release_region(data->address[i], PC87360_EXTENT);
 951                 }
 952         }
 953         kfree(data);
 954
 955         return 0;
 956 }
 957
 958 /* ldi is the logical device index
 959    bank is for voltages and temperatures only */
 960 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
 961                               u8 reg)
 962 {
 963         int res;
 964
 965         down(&(data->lock));
 966         if (bank != NO_BANK)
 967                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
 968         res = inb_p(data->address[ldi] + reg);
 969         up(&(data->lock));
 970
 971         return res;
 972 }
 973
 974 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
 975                                 u8 reg, u8 value)
 976 {
 977         down(&(data->lock));
 978         if (bank != NO_BANK)
 979                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
 980         outb_p(value, data->address[ldi] + reg);
 981         up(&(data->lock));
 982 }
 983
 984 static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
 985 {
 986         struct pc87360_data *data = i2c_get_clientdata(client);
 987         int i, nr;
 988         const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
 989         const u8 init_temp[3] = { 2, 2, 1 };
 990         u8 reg;
 991
 992         if (init >= 2 && data->innr) {
 993                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
 994                                          PC87365_REG_IN_CONVRATE);
 995                 dev_info(&client->dev, "VLM conversion set to"
 996                          "1s period, 160us delay\n");
 997                 pc87360_write_value(data, LD_IN, NO_BANK,
 998                                     PC87365_REG_IN_CONVRATE,
 999                                     (reg & 0xC0) | 0x11);
1000         }
1001
1002         nr = data->innr < 11 ? data->innr : 11;
1003         for (i=0; i<nr; i++) {
1004                 if (init >= init_in[i]) {
1005                         /* Forcibly enable voltage channel */
1006                         reg = pc87360_read_value(data, LD_IN, i,
1007                                                  PC87365_REG_IN_STATUS);
1008                         if (!(reg & 0x01)) {
1009                                 dev_dbg(&client->dev, "Forcibly "
1010                                         "enabling in%d\n", i);
1011                                 pc87360_write_value(data, LD_IN, i,
1012                                                     PC87365_REG_IN_STATUS,
1013                                                     (reg & 0x68) | 0x87);
1014                         }
1015                 }
1016         }
1017
1018         /* We can't blindly trust the Super-I/O space configuration bit,
1019            most BIOS won't set it properly */
1020         for (i=11; i<data->innr; i++) {
1021                 reg = pc87360_read_value(data, LD_IN, i,
1022                                          PC87365_REG_TEMP_STATUS);
1023                 use_thermistors = use_thermistors || (reg & 0x01);
1024         }
1025
1026         i = use_thermistors ? 2 : 0;
1027         for (; i<data->tempnr; i++) {
1028                 if (init >= init_temp[i]) {
1029                         /* Forcibly enable temperature channel */
1030                         reg = pc87360_read_value(data, LD_TEMP, i,
1031                                                  PC87365_REG_TEMP_STATUS);
1032                         if (!(reg & 0x01)) {
1033                                 dev_dbg(&client->dev, "Forcibly "
1034                                         "enabling temp%d\n", i+1);
1035                                 pc87360_write_value(data, LD_TEMP, i,
1036                                                     PC87365_REG_TEMP_STATUS,
1037                                                     0xCF);
1038                         }
1039                 }
1040         }
1041
1042         if (use_thermistors) {
1043                 for (i=11; i<data->innr; i++) {
1044                         if (init >= init_in[i]) {
1045                                 /* The pin may already be used by thermal
1046                                    diodes */
1047                                 reg = pc87360_read_value(data, LD_TEMP,
1048                                       (i-11)/2, PC87365_REG_TEMP_STATUS);
1049                                 if (reg & 0x01) {
1050                                         dev_dbg(&client->dev, "Skipping "
1051                                                 "temp%d, pin already in use "
1052                                                 "by temp%d\n", i-7, (i-11)/2);
1053                                         continue;
1054                                 }
1055
1056                                 /* Forcibly enable thermistor 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 temp%d\n", i-7);
1062                                         pc87360_write_value(data, LD_IN, i,
1063                                                 PC87365_REG_TEMP_STATUS,
1064                                                 (reg & 0x60) | 0x8F);
1065                                 }
1066                         }
1067                 }
1068         }
1069
1070         if (data->innr) {
1071                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1072                                          PC87365_REG_IN_CONFIG);
1073                 if (reg & 0x01) {
1074                         dev_dbg(&client->dev, "Forcibly "
1075                                 "enabling monitoring (VLM)\n");
1076                         pc87360_write_value(data, LD_IN, NO_BANK,
1077                                             PC87365_REG_IN_CONFIG,
1078                                             reg & 0xFE);
1079                 }
1080         }
1081
1082         if (data->tempnr) {
1083                 reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1084                                          PC87365_REG_TEMP_CONFIG);
1085                 if (reg & 0x01) {
1086                         dev_dbg(&client->dev, "Forcibly enabling "
1087                                 "monitoring (TMS)\n");
1088                         pc87360_write_value(data, LD_TEMP, NO_BANK,
1089                                             PC87365_REG_TEMP_CONFIG,
1090                                             reg & 0xFE);
1091                 }
1092
1093                 if (init >= 2) {
1094                         /* Chip config as documented by National Semi. */
1095                         pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1096                         /* We voluntarily omit the bank here, in case the
1097                            sequence itself matters. It shouldn't be a problem,
1098                            since nobody else is supposed to access the
1099                            device at that point. */
1100                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1101                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1102                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1103                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1104                 }
1105         }
1106 }
1107
1108 static void pc87360_autodiv(struct i2c_client *client, int nr)
1109 {
1110         struct pc87360_data *data = i2c_get_clientdata(client);
1111         u8 old_min = data->fan_min[nr];
1112
1113         /* Increase clock divider if needed and possible */
1114         if ((data->fan_status[nr] & 0x04) /* overflow flag */
1115          || (data->fan[nr] >= 224)) { /* next to overflow */
1116                 if ((data->fan_status[nr] & 0x60) != 0x60) {
1117                         data->fan_status[nr] += 0x20;
1118                         data->fan_min[nr] >>= 1;
1119                         data->fan[nr] >>= 1;
1120                         dev_dbg(&client->dev, "Increasing "
1121                                 "clock divider to %d for fan %d\n",
1122                                 FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
1123                 }
1124         } else {
1125                 /* Decrease clock divider if possible */
1126                 while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1127                  && data->fan[nr] < 85 /* bad accuracy */
1128                  && (data->fan_status[nr] & 0x60) != 0x00) {
1129                         data->fan_status[nr] -= 0x20;
1130                         data->fan_min[nr] <<= 1;
1131                         data->fan[nr] <<= 1;
1132                         dev_dbg(&client->dev, "Decreasing "
1133                                 "clock divider to %d for fan %d\n",
1134                                 FAN_DIV_FROM_REG(data->fan_status[nr]),
1135                                 nr+1);
1136                 }
1137         }
1138
1139         /* Write new fan min if it changed */
1140         if (old_min != data->fan_min[nr]) {
1141                 pc87360_write_value(data, LD_FAN, NO_BANK,
1142                                     PC87360_REG_FAN_MIN(nr),
1143                                     data->fan_min[nr]);
1144         }
1145 }
1146
1147 static struct pc87360_data *pc87360_update_device(struct device *dev)
1148 {
1149         struct i2c_client *client = to_i2c_client(dev);
1150         struct pc87360_data *data = i2c_get_clientdata(client);
1151         u8 i;
1152
1153         down(&data->update_lock);
1154
1155         if ((jiffies - data->last_updated > HZ * 2)
1156          || (jiffies < data->last_updated) || !data->valid) {
1157                 dev_dbg(&client->dev, "Data update\n");
1158
1159                 /* Fans */
1160                 for (i = 0; i < data->fannr; i++) {
1161                         if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1162                                 data->fan_status[i] =
1163                                         pc87360_read_value(data, LD_FAN,
1164                                         NO_BANK, PC87360_REG_FAN_STATUS(i));
1165                                 data->fan[i] = pc87360_read_value(data, LD_FAN,
1166                                                NO_BANK, PC87360_REG_FAN(i));
1167                                 data->fan_min[i] = pc87360_read_value(data,
1168                                                    LD_FAN, NO_BANK,
1169                                                    PC87360_REG_FAN_MIN(i));
1170                                 /* Change clock divider if needed */
1171                                 pc87360_autodiv(client, i);
1172                                 /* Clear bits and write new divider */
1173                                 pc87360_write_value(data, LD_FAN, NO_BANK,
1174                                                     PC87360_REG_FAN_STATUS(i),
1175                                                     data->fan_status[i]);
1176                         }
1177                         if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1178                                 data->pwm[i] = pc87360_read_value(data, LD_FAN,
1179                                                NO_BANK, PC87360_REG_PWM(i));
1180                 }
1181
1182                 /* Voltages */
1183                 for (i = 0; i < data->innr; i++) {
1184                         data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1185                                              PC87365_REG_IN_STATUS);
1186                         /* Clear bits */
1187                         pc87360_write_value(data, LD_IN, i,
1188                                             PC87365_REG_IN_STATUS,
1189                                             data->in_status[i]);
1190                         if ((data->in_status[i] & 0x81) == 0x81) {
1191                                 data->in[i] = pc87360_read_value(data, LD_IN,
1192                                               i, PC87365_REG_IN);
1193                         }
1194                         if (data->in_status[i] & 0x01) {
1195                                 data->in_min[i] = pc87360_read_value(data,
1196                                                   LD_IN, i,
1197                                                   PC87365_REG_IN_MIN);
1198                                 data->in_max[i] = pc87360_read_value(data,
1199                                                   LD_IN, i,
1200                                                   PC87365_REG_IN_MAX);
1201                                 if (i >= 11)
1202                                         data->in_crit[i-11] =
1203                                                 pc87360_read_value(data, LD_IN,
1204                                                 i, PC87365_REG_TEMP_CRIT);
1205                         }
1206                 }
1207                 if (data->innr) {
1208                         data->in_alarms = pc87360_read_value(data, LD_IN,
1209                                           NO_BANK, PC87365_REG_IN_ALARMS1)
1210                                         | ((pc87360_read_value(data, LD_IN,
1211                                             NO_BANK, PC87365_REG_IN_ALARMS2)
1212                                             & 0x07) << 8);
1213                         data->vid = (data->vid_conf & 0xE0) ?
1214                                     pc87360_read_value(data, LD_IN,
1215                                     NO_BANK, PC87365_REG_VID) : 0x1F;
1216                 }
1217
1218                 /* Temperatures */
1219                 for (i = 0; i < data->tempnr; i++) {
1220                         data->temp_status[i] = pc87360_read_value(data,
1221                                                LD_TEMP, i,
1222                                                PC87365_REG_TEMP_STATUS);
1223                         /* Clear bits */
1224                         pc87360_write_value(data, LD_TEMP, i,
1225                                             PC87365_REG_TEMP_STATUS,
1226                                             data->temp_status[i]);
1227                         if ((data->temp_status[i] & 0x81) == 0x81) {
1228                                 data->temp[i] = pc87360_read_value(data,
1229                                                 LD_TEMP, i,
1230                                                 PC87365_REG_TEMP);
1231                         }
1232                         if (data->temp_status[i] & 0x01) {
1233                                 data->temp_min[i] = pc87360_read_value(data,
1234                                                     LD_TEMP, i,
1235                                                     PC87365_REG_TEMP_MIN);
1236                                 data->temp_max[i] = pc87360_read_value(data,
1237                                                     LD_TEMP, i,
1238                                                     PC87365_REG_TEMP_MAX);
1239                                 data->temp_crit[i] = pc87360_read_value(data,
1240                                                      LD_TEMP, i,
1241                                                      PC87365_REG_TEMP_CRIT);
1242                         }
1243                 }
1244                 if (data->tempnr) {
1245                         data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1246                                             NO_BANK, PC87365_REG_TEMP_ALARMS)
1247                                             & 0x3F;
1248                 }
1249
1250                 data->last_updated = jiffies;
1251                 data->valid = 1;
1252         }
1253
1254         up(&data->update_lock);
1255
1256         return data;
1257 }
1258
1259 static int __init pc87360_init(void)
1260 {
1261         int i;
1262
1263         if (pc87360_find(0x2e, &devid, extra_isa)
1264          && pc87360_find(0x4e, &devid, extra_isa)) {
1265                 printk(KERN_WARNING "pc87360: PC8736x not detected, "
1266                        "module not inserted.\n");
1267                 return -ENODEV;
1268         }
1269
1270         /* Arbitrarily pick one of the addresses */
1271         for (i = 0; i < 3; i++) {
1272                 if (extra_isa[i] != 0x0000) {
1273                         normal_isa[0] = extra_isa[i];
1274                         break;
1275                 }
1276         }
1277
1278         if (normal_isa[0] == 0x0000) {
1279                 printk(KERN_WARNING "pc87360: No active logical device, "
1280                        "module not inserted.\n");
1281                 return -ENODEV;
1282         }
1283
1284         return i2c_add_driver(&pc87360_driver);
1285 }
1286
1287 static void __exit pc87360_exit(void)
1288 {
1289         i2c_del_driver(&pc87360_driver);
1290 }
1291
1292
1293 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1294 MODULE_DESCRIPTION("PC8736x hardware monitor");
1295 MODULE_LICENSE("GPL");
1296
1297 module_init(pc87360_init);
1298 module_exit(pc87360_exit);