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/jiffies.h>
  41 #include <linux/i2c.h>
  42 #include <linux/i2c-sensor.h>
  43 #include <linux/i2c-vid.h>
  44 #include <asm/io.h>
  45
  46 static unsigned short normal_i2c[] = { I2C_CLIENT_END };
  47 static unsigned int normal_isa[] = { 0, I2C_CLIENT_ISA_END };
  48 static struct i2c_force_data forces[] = {{ NULL }};
  49 static u8 devid;
  50 static unsigned int extra_isa[3];
  51 static u8 confreg[4];
  52
  53 enum chips { any_chip, pc87360, pc87363, pc87364, pc87365, pc87366 };
  54 static struct i2c_address_data addr_data = {
  55         .normal_i2c             = normal_i2c,
  56         .normal_isa             = normal_isa,
  57         .forces                 = forces,
  58 };
  59
  60 static int init = 1;
  61 module_param(init, int, 0);
  62 MODULE_PARM_DESC(init,
  63  "Chip initialization level:\n"
  64  " 0: None\n"
  65  "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
  66  " 2: Forcibly enable all voltage and temperature channels, except in9\n"
  67  " 3: Forcibly enable all voltage and temperature channels, including in9");
  68
  69 /*
  70  * Super-I/O registers and operations
  71  */
  72
  73 #define DEV     0x07    /* Register: Logical device select */
  74 #define DEVID   0x20    /* Register: Device ID */
  75 #define ACT     0x30    /* Register: Device activation */
  76 #define BASE    0x60    /* Register: Base address */
  77
  78 #define FSCM    0x09    /* Logical device: fans */
  79 #define VLM     0x0d    /* Logical device: voltages */
  80 #define TMS     0x0e    /* Logical device: temperatures */
  81 static const u8 logdev[3] = { FSCM, VLM, TMS };
  82
  83 #define LD_FAN          0
  84 #define LD_IN           1
  85 #define LD_TEMP         2
  86
  87 static inline void superio_outb(int sioaddr, int reg, int val)
  88 {
  89         outb(reg, sioaddr);
  90         outb(val, sioaddr+1);
  91 }
  92
  93 static inline int superio_inb(int sioaddr, int reg)
  94 {
  95         outb(reg, sioaddr);
  96         return inb(sioaddr+1);
  97 }
  98
  99 static inline void superio_exit(int sioaddr)
 100 {
 101         outb(0x02, sioaddr);
 102         outb(0x02, sioaddr+1);
 103 }
 104
 105 /*
 106  * Logical devices
 107  */
 108
 109 #define PC87360_EXTENT          0x10
 110 #define PC87365_REG_BANK        0x09
 111 #define NO_BANK                 0xff
 112
 113 /*
 114  * Fan registers and conversions
 115  */
 116
 117 /* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
 118 #define PC87360_REG_PRESCALE(nr)        (0x00 + 2 * (nr))
 119 #define PC87360_REG_PWM(nr)             (0x01 + 2 * (nr))
 120 #define PC87360_REG_FAN_MIN(nr)         (0x06 + 3 * (nr))
 121 #define PC87360_REG_FAN(nr)             (0x07 + 3 * (nr))
 122 #define PC87360_REG_FAN_STATUS(nr)      (0x08 + 3 * (nr))
 123
 124 #define FAN_FROM_REG(val,div)           ((val) == 0 ? 0: \
 125                                          480000 / ((val)*(div)))
 126 #define FAN_TO_REG(val,div)             ((val) <= 100 ? 0 : \
 127                                          480000 / ((val)*(div)))
 128 #define FAN_DIV_FROM_REG(val)           (1 << ((val >> 5) & 0x03))
 129 #define FAN_STATUS_FROM_REG(val)        ((val) & 0x07)
 130
 131 #define FAN_CONFIG_MONITOR(val,nr)      (((val) >> (2 + nr * 3)) & 1)
 132 #define FAN_CONFIG_CONTROL(val,nr)      (((val) >> (3 + nr * 3)) & 1)
 133 #define FAN_CONFIG_INVERT(val,nr)       (((val) >> (4 + nr * 3)) & 1)
 134
 135 #define PWM_FROM_REG(val,inv)           ((inv) ? 255 - (val) : (val))
 136 static inline u8 PWM_TO_REG(int val, int inv)
 137 {
 138         if (inv)
 139                 val = 255 - val;
 140         if (val < 0)
 141                 return 0;
 142         if (val > 255)
 143                 return 255;
 144         return val;
 145 }
 146
 147 /*
 148  * Voltage registers and conversions
 149  */
 150
 151 #define PC87365_REG_IN_CONVRATE         0x07
 152 #define PC87365_REG_IN_CONFIG           0x08
 153 #define PC87365_REG_IN                  0x0B
 154 #define PC87365_REG_IN_MIN              0x0D
 155 #define PC87365_REG_IN_MAX              0x0C
 156 #define PC87365_REG_IN_STATUS           0x0A
 157 #define PC87365_REG_IN_ALARMS1          0x00
 158 #define PC87365_REG_IN_ALARMS2          0x01
 159 #define PC87365_REG_VID                 0x06
 160
 161 #define IN_FROM_REG(val,ref)            (((val) * (ref) + 128) / 256)
 162 #define IN_TO_REG(val,ref)              ((val) < 0 ? 0 : \
 163                                          (val)*256 >= (ref)*255 ? 255: \
 164                                          ((val) * 256 + (ref)/2) / (ref))
 165
 166 /*
 167  * Temperature registers and conversions
 168  */
 169
 170 #define PC87365_REG_TEMP_CONFIG         0x08
 171 #define PC87365_REG_TEMP                0x0B
 172 #define PC87365_REG_TEMP_MIN            0x0D
 173 #define PC87365_REG_TEMP_MAX            0x0C
 174 #define PC87365_REG_TEMP_CRIT           0x0E
 175 #define PC87365_REG_TEMP_STATUS         0x0A
 176 #define PC87365_REG_TEMP_ALARMS         0x00
 177
 178 #define TEMP_FROM_REG(val)              ((val) * 1000)
 179 #define TEMP_TO_REG(val)                ((val) < -55000 ? -55 : \
 180                                          (val) > 127000 ? 127 : \
 181                                          (val) < 0 ? ((val) - 500) / 1000 : \
 182                                          ((val) + 500) / 1000)
 183
 184 /*
 185  * Client data (each client gets its own)
 186  */
 187
 188 struct pc87360_data {
 189         struct i2c_client client;
 190         struct semaphore lock;
 191         struct semaphore update_lock;
 192         char valid;             /* !=0 if following fields are valid */
 193         unsigned long last_updated;     /* In jiffies */
 194
 195         int address[3];
 196
 197         u8 fannr, innr, tempnr;
 198
 199         u8 fan[3];              /* Register value */
 200         u8 fan_min[3];          /* Register value */
 201         u8 fan_status[3];       /* Register value */
 202         u8 pwm[3];              /* Register value */
 203         u16 fan_conf;           /* Configuration register values, combined */
 204
 205         u16 in_vref;            /* 1 mV/bit */
 206         u8 in[14];              /* Register value */
 207         u8 in_min[14];          /* Register value */
 208         u8 in_max[14];          /* Register value */
 209         u8 in_crit[3];          /* Register value */
 210         u8 in_status[14];       /* Register value */
 211         u16 in_alarms;          /* Register values, combined, masked */
 212         u8 vid_conf;            /* Configuration register value */
 213         u8 vrm;
 214         u8 vid;                 /* Register value */
 215
 216         s8 temp[3];             /* Register value */
 217         s8 temp_min[3];         /* Register value */
 218         s8 temp_max[3];         /* Register value */
 219         s8 temp_crit[3];        /* Register value */
 220         u8 temp_status[3];      /* Register value */
 221         u8 temp_alarms;         /* Register value, masked */
 222 };
 223
 224 /*
 225  * Functions declaration
 226  */
 227
 228 static int pc87360_attach_adapter(struct i2c_adapter *adapter);
 229 static int pc87360_detect(struct i2c_adapter *adapter, int address, int kind);
 230 static int pc87360_detach_client(struct i2c_client *client);
 231
 232 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
 233                               u8 reg);
 234 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
 235                                 u8 reg, u8 value);
 236 static void pc87360_init_client(struct i2c_client *client, int use_thermistors);
 237 static struct pc87360_data *pc87360_update_device(struct device *dev);
 238
 239 /*
 240  * Driver data (common to all clients)
 241  */
 242
 243 static struct i2c_driver pc87360_driver = {
 244         .owner          = THIS_MODULE,
 245         .name           = "pc87360",
 246         .flags          = I2C_DF_NOTIFY,
 247         .attach_adapter = pc87360_attach_adapter,
 248         .detach_client  = pc87360_detach_client,
 249 };
 250
 251 /*
 252  * Sysfs stuff
 253  */
 254
 255 static ssize_t set_fan_min(struct device *dev, const char *buf,
 256         size_t count, int nr)
 257 {
 258         struct i2c_client *client = to_i2c_client(dev);
 259         struct pc87360_data *data = i2c_get_clientdata(client);
 260         long fan_min = simple_strtol(buf, NULL, 10);
 261
 262         down(&data->update_lock);
 263         fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[nr]));
 264
 265         /* If it wouldn't fit, change clock divisor */
 266         while (fan_min > 255
 267             && (data->fan_status[nr] & 0x60) != 0x60) {
 268                 fan_min >>= 1;
 269                 data->fan[nr] >>= 1;
 270                 data->fan_status[nr] += 0x20;
 271         }
 272         data->fan_min[nr] = fan_min > 255 ? 255 : fan_min;
 273         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(nr),
 274                             data->fan_min[nr]);
 275
 276         /* Write new divider, preserve alarm bits */
 277         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(nr),
 278                             data->fan_status[nr] & 0xF9);
 279         up(&data->update_lock);
 280
 281         return count;
 282 }
 283
 284 #define show_and_set_fan(offset) \
 285 static ssize_t show_fan##offset##_input(struct device *dev, char *buf) \
 286 { \
 287         struct pc87360_data *data = pc87360_update_device(dev); \
 288         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[offset-1], \
 289                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
 290 } \
 291 static ssize_t show_fan##offset##_min(struct device *dev, char *buf) \
 292 { \
 293         struct pc87360_data *data = pc87360_update_device(dev); \
 294         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[offset-1], \
 295                        FAN_DIV_FROM_REG(data->fan_status[offset-1]))); \
 296 } \
 297 static ssize_t show_fan##offset##_div(struct device *dev, char *buf) \
 298 { \
 299         struct pc87360_data *data = pc87360_update_device(dev); \
 300         return sprintf(buf, "%u\n", \
 301                        FAN_DIV_FROM_REG(data->fan_status[offset-1])); \
 302 } \
 303 static ssize_t show_fan##offset##_status(struct device *dev, char *buf) \
 304 { \
 305         struct pc87360_data *data = pc87360_update_device(dev); \
 306         return sprintf(buf, "%u\n", \
 307                        FAN_STATUS_FROM_REG(data->fan_status[offset-1])); \
 308 } \
 309 static ssize_t set_fan##offset##_min(struct device *dev, const char *buf, \
 310         size_t count) \
 311 { \
 312         return set_fan_min(dev, buf, count, offset-1); \
 313 } \
 314 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
 315         show_fan##offset##_input, NULL); \
 316 static DEVICE_ATTR(fan##offset##_min, S_IWUSR | S_IRUGO, \
 317         show_fan##offset##_min, set_fan##offset##_min); \
 318 static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \
 319         show_fan##offset##_div, NULL); \
 320 static DEVICE_ATTR(fan##offset##_status, S_IRUGO, \
 321         show_fan##offset##_status, NULL);
 322 show_and_set_fan(1)
 323 show_and_set_fan(2)
 324 show_and_set_fan(3)
 325
 326 #define show_and_set_pwm(offset) \
 327 static ssize_t show_pwm##offset(struct device *dev, char *buf) \
 328 { \
 329         struct pc87360_data *data = pc87360_update_device(dev); \
 330         return sprintf(buf, "%u\n", \
 331                        PWM_FROM_REG(data->pwm[offset-1], \
 332                                     FAN_CONFIG_INVERT(data->fan_conf, \
 333                                                       offset-1))); \
 334 } \
 335 static ssize_t set_pwm##offset(struct device *dev, const char *buf, \
 336         size_t count) \
 337 { \
 338         struct i2c_client *client = to_i2c_client(dev); \
 339         struct pc87360_data *data = i2c_get_clientdata(client); \
 340         long val = simple_strtol(buf, NULL, 10); \
 341  \
 342         down(&data->update_lock); \
 343         data->pwm[offset-1] = PWM_TO_REG(val, \
 344                               FAN_CONFIG_INVERT(data->fan_conf, offset-1)); \
 345         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(offset-1), \
 346                             data->pwm[offset-1]); \
 347         up(&data->update_lock); \
 348         return count; \
 349 } \
 350 static DEVICE_ATTR(pwm##offset, S_IWUSR | S_IRUGO, \
 351         show_pwm##offset, set_pwm##offset);
 352 show_and_set_pwm(1)
 353 show_and_set_pwm(2)
 354 show_and_set_pwm(3)
 355
 356 #define show_and_set_in(offset) \
 357 static ssize_t show_in##offset##_input(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[offset], \
 361                        data->in_vref)); \
 362 } \
 363 static ssize_t show_in##offset##_min(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_min[offset], \
 367                        data->in_vref)); \
 368 } \
 369 static ssize_t show_in##offset##_max(struct device *dev, char *buf) \
 370 { \
 371         struct pc87360_data *data = pc87360_update_device(dev); \
 372         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \
 373                        data->in_vref)); \
 374 } \
 375 static ssize_t show_in##offset##_status(struct device *dev, char *buf) \
 376 { \
 377         struct pc87360_data *data = pc87360_update_device(dev); \
 378         return sprintf(buf, "%u\n", data->in_status[offset]); \
 379 } \
 380 static ssize_t set_in##offset##_min(struct device *dev, const char *buf, \
 381         size_t count) \
 382 { \
 383         struct i2c_client *client = to_i2c_client(dev); \
 384         struct pc87360_data *data = i2c_get_clientdata(client); \
 385         long val = simple_strtol(buf, NULL, 10); \
 386  \
 387         down(&data->update_lock); \
 388         data->in_min[offset] = IN_TO_REG(val, data->in_vref); \
 389         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MIN, \
 390                             data->in_min[offset]); \
 391         up(&data->update_lock); \
 392         return count; \
 393 } \
 394 static ssize_t set_in##offset##_max(struct device *dev, const char *buf, \
 395         size_t count) \
 396 { \
 397         struct i2c_client *client = to_i2c_client(dev); \
 398         struct pc87360_data *data = i2c_get_clientdata(client); \
 399         long val = simple_strtol(buf, NULL, 10); \
 400  \
 401         down(&data->update_lock); \
 402         data->in_max[offset] = IN_TO_REG(val, \
 403                                data->in_vref); \
 404         pc87360_write_value(data, LD_IN, offset, PC87365_REG_IN_MAX, \
 405                             data->in_max[offset]); \
 406         up(&data->update_lock); \
 407         return count; \
 408 } \
 409 static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
 410         show_in##offset##_input, NULL); \
 411 static DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \
 412         show_in##offset##_min, set_in##offset##_min); \
 413 static DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \
 414         show_in##offset##_max, set_in##offset##_max); \
 415 static DEVICE_ATTR(in##offset##_status, S_IRUGO, \
 416         show_in##offset##_status, NULL);
 417 show_and_set_in(0)
 418 show_and_set_in(1)
 419 show_and_set_in(2)
 420 show_and_set_in(3)
 421 show_and_set_in(4)
 422 show_and_set_in(5)
 423 show_and_set_in(6)
 424 show_and_set_in(7)
 425 show_and_set_in(8)
 426 show_and_set_in(9)
 427 show_and_set_in(10)
 428
 429 #define show_and_set_therm(offset) \
 430 static ssize_t show_temp##offset##_input(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[offset+7], \
 434                        data->in_vref)); \
 435 } \
 436 static ssize_t show_temp##offset##_min(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_min[offset+7], \
 440                        data->in_vref)); \
 441 } \
 442 static ssize_t show_temp##offset##_max(struct device *dev, char *buf) \
 443 { \
 444         struct pc87360_data *data = pc87360_update_device(dev); \
 445         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset+7], \
 446                        data->in_vref)); \
 447 } \
 448 static ssize_t show_temp##offset##_crit(struct device *dev, char *buf) \
 449 { \
 450         struct pc87360_data *data = pc87360_update_device(dev); \
 451         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[offset-4], \
 452                        data->in_vref)); \
 453 } \
 454 static ssize_t show_temp##offset##_status(struct device *dev, char *buf) \
 455 { \
 456         struct pc87360_data *data = pc87360_update_device(dev); \
 457         return sprintf(buf, "%u\n", data->in_status[offset+7]); \
 458 } \
 459 static ssize_t set_temp##offset##_min(struct device *dev, const char *buf, \
 460         size_t count) \
 461 { \
 462         struct i2c_client *client = to_i2c_client(dev); \
 463         struct pc87360_data *data = i2c_get_clientdata(client); \
 464         long val = simple_strtol(buf, NULL, 10); \
 465  \
 466         down(&data->update_lock); \
 467         data->in_min[offset+7] = IN_TO_REG(val, data->in_vref); \
 468         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MIN, \
 469                             data->in_min[offset+7]); \
 470         up(&data->update_lock); \
 471         return count; \
 472 } \
 473 static ssize_t set_temp##offset##_max(struct device *dev, const char *buf, \
 474         size_t count) \
 475 { \
 476         struct i2c_client *client = to_i2c_client(dev); \
 477         struct pc87360_data *data = i2c_get_clientdata(client); \
 478         long val = simple_strtol(buf, NULL, 10); \
 479  \
 480         down(&data->update_lock); \
 481         data->in_max[offset+7] = IN_TO_REG(val, data->in_vref); \
 482         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_MAX, \
 483                             data->in_max[offset+7]); \
 484         up(&data->update_lock); \
 485         return count; \
 486 } \
 487 static ssize_t set_temp##offset##_crit(struct device *dev, const char *buf, \
 488         size_t count) \
 489 { \
 490         struct i2c_client *client = to_i2c_client(dev); \
 491         struct pc87360_data *data = i2c_get_clientdata(client); \
 492         long val = simple_strtol(buf, NULL, 10); \
 493  \
 494         down(&data->update_lock); \
 495         data->in_crit[offset-4] = IN_TO_REG(val, data->in_vref); \
 496         pc87360_write_value(data, LD_IN, offset+7, PC87365_REG_TEMP_CRIT, \
 497                             data->in_crit[offset-4]); \
 498         up(&data->update_lock); \
 499         return count; \
 500 } \
 501 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
 502         show_temp##offset##_input, NULL); \
 503 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
 504         show_temp##offset##_min, set_temp##offset##_min); \
 505 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
 506         show_temp##offset##_max, set_temp##offset##_max); \
 507 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
 508         show_temp##offset##_crit, set_temp##offset##_crit); \
 509 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
 510         show_temp##offset##_status, NULL);
 511 show_and_set_therm(4)
 512 show_and_set_therm(5)
 513 show_and_set_therm(6)
 514
 515 static ssize_t show_vid(struct device *dev, char *buf)
 516 {
 517         struct pc87360_data *data = pc87360_update_device(dev);
 518         return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
 519 }
 520 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
 521
 522 static ssize_t show_vrm(struct device *dev, char *buf)
 523 {
 524         struct pc87360_data *data = pc87360_update_device(dev);
 525         return sprintf(buf, "%u\n", data->vrm);
 526 }
 527 static ssize_t set_vrm(struct device *dev, const char *buf, size_t count)
 528 {
 529         struct i2c_client *client = to_i2c_client(dev);
 530         struct pc87360_data *data = i2c_get_clientdata(client);
 531         data->vrm = simple_strtoul(buf, NULL, 10);
 532         return count;
 533 }
 534 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
 535
 536 static ssize_t show_in_alarms(struct device *dev, char *buf)
 537 {
 538         struct pc87360_data *data = pc87360_update_device(dev);
 539         return sprintf(buf, "%u\n", data->in_alarms);
 540 }
 541 static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
 542
 543 #define show_and_set_temp(offset) \
 544 static ssize_t show_temp##offset##_input(struct device *dev, char *buf) \
 545 { \
 546         struct pc87360_data *data = pc87360_update_device(dev); \
 547         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \
 548 } \
 549 static ssize_t show_temp##offset##_min(struct device *dev, char *buf) \
 550 { \
 551         struct pc87360_data *data = pc87360_update_device(dev); \
 552         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[offset-1])); \
 553 } \
 554 static ssize_t show_temp##offset##_max(struct device *dev, char *buf) \
 555 { \
 556         struct pc87360_data *data = pc87360_update_device(dev); \
 557         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[offset-1])); \
 558 }\
 559 static ssize_t show_temp##offset##_crit(struct device *dev, char *buf) \
 560 { \
 561         struct pc87360_data *data = pc87360_update_device(dev); \
 562         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[offset-1])); \
 563 }\
 564 static ssize_t show_temp##offset##_status(struct device *dev, char *buf) \
 565 { \
 566         struct pc87360_data *data = pc87360_update_device(dev); \
 567         return sprintf(buf, "%d\n", data->temp_status[offset-1]); \
 568 }\
 569 static ssize_t set_temp##offset##_min(struct device *dev, const char *buf, \
 570         size_t count) \
 571 { \
 572         struct i2c_client *client = to_i2c_client(dev); \
 573         struct pc87360_data *data = i2c_get_clientdata(client); \
 574         long val = simple_strtol(buf, NULL, 10); \
 575  \
 576         down(&data->update_lock); \
 577         data->temp_min[offset-1] = TEMP_TO_REG(val); \
 578         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MIN, \
 579                             data->temp_min[offset-1]); \
 580         up(&data->update_lock); \
 581         return count; \
 582 } \
 583 static ssize_t set_temp##offset##_max(struct device *dev, const char *buf, \
 584         size_t count) \
 585 { \
 586         struct i2c_client *client = to_i2c_client(dev); \
 587         struct pc87360_data *data = i2c_get_clientdata(client); \
 588         long val = simple_strtol(buf, NULL, 10); \
 589  \
 590         down(&data->update_lock); \
 591         data->temp_max[offset-1] = TEMP_TO_REG(val); \
 592         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_MAX, \
 593                             data->temp_max[offset-1]); \
 594         up(&data->update_lock); \
 595         return count; \
 596 } \
 597 static ssize_t set_temp##offset##_crit(struct device *dev, const char *buf, \
 598         size_t count) \
 599 { \
 600         struct i2c_client *client = to_i2c_client(dev); \
 601         struct pc87360_data *data = i2c_get_clientdata(client); \
 602         long val = simple_strtol(buf, NULL, 10); \
 603  \
 604         down(&data->update_lock); \
 605         data->temp_crit[offset-1] = TEMP_TO_REG(val); \
 606         pc87360_write_value(data, LD_TEMP, offset-1, PC87365_REG_TEMP_CRIT, \
 607                             data->temp_crit[offset-1]); \
 608         up(&data->update_lock); \
 609         return count; \
 610 } \
 611 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
 612         show_temp##offset##_input, NULL); \
 613 static DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \
 614         show_temp##offset##_min, set_temp##offset##_min); \
 615 static DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \
 616         show_temp##offset##_max, set_temp##offset##_max); \
 617 static DEVICE_ATTR(temp##offset##_crit, S_IWUSR | S_IRUGO, \
 618         show_temp##offset##_crit, set_temp##offset##_crit); \
 619 static DEVICE_ATTR(temp##offset##_status, S_IRUGO, \
 620         show_temp##offset##_status, NULL);
 621 show_and_set_temp(1)
 622 show_and_set_temp(2)
 623 show_and_set_temp(3)
 624
 625 static ssize_t show_temp_alarms(struct device *dev, char *buf)
 626 {
 627         struct pc87360_data *data = pc87360_update_device(dev);
 628         return sprintf(buf, "%u\n", data->temp_alarms);
 629 }
 630 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
 631
 632 /*
 633  * Device detection, registration and update
 634  */
 635
 636 static int pc87360_attach_adapter(struct i2c_adapter *adapter)
 637 {
 638         return i2c_detect(adapter, &addr_data, pc87360_detect);
 639 }
 640
 641 static int pc87360_find(int sioaddr, u8 *devid, int *address)
 642 {
 643         u16 val;
 644         int i;
 645         int nrdev; /* logical device count */
 646
 647         /* No superio_enter */
 648
 649         /* Identify device */
 650         val = superio_inb(sioaddr, DEVID);
 651         switch (val) {
 652         case 0xE1: /* PC87360 */
 653         case 0xE8: /* PC87363 */
 654         case 0xE4: /* PC87364 */
 655                 nrdev = 1;
 656                 break;
 657         case 0xE5: /* PC87365 */
 658         case 0xE9: /* PC87366 */
 659                 nrdev = 3;
 660                 break;
 661         default:
 662                 superio_exit(sioaddr);
 663                 return -ENODEV;
 664         }
 665         /* Remember the device id */
 666         *devid = val;
 667
 668         for (i = 0; i < nrdev; i++) {
 669                 /* select logical device */
 670                 superio_outb(sioaddr, DEV, logdev[i]);
 671
 672                 val = superio_inb(sioaddr, ACT);
 673                 if (!(val & 0x01)) {
 674                         printk(KERN_INFO "pc87360: Device 0x%02x not "
 675                                "activated\n", logdev[i]);
 676                         continue;
 677                 }
 678
 679                 val = (superio_inb(sioaddr, BASE) << 8)
 680                     | superio_inb(sioaddr, BASE + 1);
 681                 if (!val) {
 682                         printk(KERN_INFO "pc87360: Base address not set for "
 683                                "device 0x%02x\n", logdev[i]);
 684                         continue;
 685                 }
 686
 687                 address[i] = val;
 688
 689                 if (i==0) { /* Fans */
 690                         confreg[0] = superio_inb(sioaddr, 0xF0);
 691                         confreg[1] = superio_inb(sioaddr, 0xF1);
 692
 693 #ifdef DEBUG
 694                         printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
 695                                "ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
 696                                (confreg[0]>>3)&1, (confreg[0]>>4)&1);
 697                         printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
 698                                "ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
 699                                (confreg[0]>>6)&1, (confreg[0]>>7)&1);
 700                         printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
 701                                "ctrl=%d inv=%d\n", confreg[1]&1,
 702                                (confreg[1]>>1)&1, (confreg[1]>>2)&1);
 703 #endif
 704                 } else if (i==1) { /* Voltages */
 705                         /* Are we using thermistors? */
 706                         if (*devid == 0xE9) { /* PC87366 */
 707                                 /* These registers are not logical-device
 708                                    specific, just that we won't need them if
 709                                    we don't use the VLM device */
 710                                 confreg[2] = superio_inb(sioaddr, 0x2B);
 711                                 confreg[3] = superio_inb(sioaddr, 0x25);
 712
 713                                 if (confreg[2] & 0x40) {
 714                                         printk(KERN_INFO "pc87360: Using "
 715                                                "thermistors for temperature "
 716                                                "monitoring\n");
 717                                 }
 718                                 if (confreg[3] & 0xE0) {
 719                                         printk(KERN_INFO "pc87360: VID "
 720                                                "inputs routed (mode %u)\n",
 721                                                confreg[3] >> 5);
 722                                 }
 723                         }
 724                 }
 725         }
 726
 727         superio_exit(sioaddr);
 728         return 0;
 729 }
 730
 731 /* We don't really care about the address.
 732    Read from extra_isa instead. */
 733 int pc87360_detect(struct i2c_adapter *adapter, int address, int kind)
 734 {
 735         int i;
 736         struct i2c_client *new_client;
 737         struct pc87360_data *data;
 738         int err = 0;
 739         const char *name = "pc87360";
 740         int use_thermistors = 0;
 741
 742         if (!i2c_is_isa_adapter(adapter))
 743                 return -ENODEV;
 744
 745         if (!(data = kmalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
 746                 return -ENOMEM;
 747         memset(data, 0x00, sizeof(struct pc87360_data));
 748
 749         new_client = &data->client;
 750         i2c_set_clientdata(new_client, data);
 751         new_client->addr = address;
 752         init_MUTEX(&data->lock);
 753         new_client->adapter = adapter;
 754         new_client->driver = &pc87360_driver;
 755         new_client->flags = 0;
 756
 757         data->fannr = 2;
 758         data->innr = 0;
 759         data->tempnr = 0;
 760
 761         switch (devid) {
 762         case 0xe8:
 763                 name = "pc87363";
 764                 break;
 765         case 0xe4:
 766                 name = "pc87364";
 767                 data->fannr = 3;
 768                 break;
 769         case 0xe5:
 770                 name = "pc87365";
 771                 data->fannr = extra_isa[0] ? 3 : 0;
 772                 data->innr = extra_isa[1] ? 11 : 0;
 773                 data->tempnr = extra_isa[2] ? 2 : 0;
 774                 break;
 775         case 0xe9:
 776                 name = "pc87366";
 777                 data->fannr = extra_isa[0] ? 3 : 0;
 778                 data->innr = extra_isa[1] ? 14 : 0;
 779                 data->tempnr = extra_isa[2] ? 3 : 0;
 780                 break;
 781         }
 782
 783         strcpy(new_client->name, name);
 784         data->valid = 0;
 785         init_MUTEX(&data->update_lock);
 786
 787         for (i = 0; i < 3; i++) {
 788                 if (((data->address[i] = extra_isa[i]))
 789                  && !request_region(extra_isa[i], PC87360_EXTENT,
 790                                     pc87360_driver.name)) {
 791                         dev_err(&new_client->dev, "Region 0x%x-0x%x already "
 792                                 "in use!\n", extra_isa[i],
 793                                 extra_isa[i]+PC87360_EXTENT-1);
 794                         for (i--; i >= 0; i--)
 795                                 release_region(extra_isa[i], PC87360_EXTENT);
 796                         err = -EBUSY;
 797                         goto ERROR1;
 798                 }
 799         }
 800
 801         /* Retrieve the fans configuration from Super-I/O space */
 802         if (data->fannr)
 803                 data->fan_conf = confreg[0] | (confreg[1] << 8);
 804
 805         if ((err = i2c_attach_client(new_client)))
 806                 goto ERROR2;
 807
 808         /* Use the correct reference voltage
 809            Unless both the VLM and the TMS logical devices agree to
 810            use an external Vref, the internal one is used. */
 811         if (data->innr) {
 812                 i = pc87360_read_value(data, LD_IN, NO_BANK,
 813                                        PC87365_REG_IN_CONFIG);
 814                 if (data->tempnr) {
 815                         i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
 816                                                 PC87365_REG_TEMP_CONFIG);
 817                 }
 818                 data->in_vref = (i&0x02) ? 3025 : 2966;
 819                 dev_dbg(&new_client->dev, "Using %s reference voltage\n",
 820                         (i&0x02) ? "external" : "internal");
 821
 822                 data->vid_conf = confreg[3];
 823                 data->vrm = 90;
 824         }
 825
 826         /* Fan clock dividers may be needed before any data is read */
 827         for (i = 0; i < data->fannr; i++) {
 828                 if (FAN_CONFIG_MONITOR(data->fan_conf, i))
 829                         data->fan_status[i] = pc87360_read_value(data,
 830                                               LD_FAN, NO_BANK,
 831                                               PC87360_REG_FAN_STATUS(i));
 832         }
 833
 834         if (init > 0) {
 835                 if (devid == 0xe9 && data->address[1]) /* PC87366 */
 836                         use_thermistors = confreg[2] & 0x40;
 837
 838                 pc87360_init_client(new_client, use_thermistors);
 839         }
 840
 841         /* Register sysfs hooks */
 842         if (data->innr) {
 843                 device_create_file(&new_client->dev, &dev_attr_in0_input);
 844                 device_create_file(&new_client->dev, &dev_attr_in1_input);
 845                 device_create_file(&new_client->dev, &dev_attr_in2_input);
 846                 device_create_file(&new_client->dev, &dev_attr_in3_input);
 847                 device_create_file(&new_client->dev, &dev_attr_in4_input);
 848                 device_create_file(&new_client->dev, &dev_attr_in5_input);
 849                 device_create_file(&new_client->dev, &dev_attr_in6_input);
 850                 device_create_file(&new_client->dev, &dev_attr_in7_input);
 851                 device_create_file(&new_client->dev, &dev_attr_in8_input);
 852                 device_create_file(&new_client->dev, &dev_attr_in9_input);
 853                 device_create_file(&new_client->dev, &dev_attr_in10_input);
 854                 device_create_file(&new_client->dev, &dev_attr_in0_min);
 855                 device_create_file(&new_client->dev, &dev_attr_in1_min);
 856                 device_create_file(&new_client->dev, &dev_attr_in2_min);
 857                 device_create_file(&new_client->dev, &dev_attr_in3_min);
 858                 device_create_file(&new_client->dev, &dev_attr_in4_min);
 859                 device_create_file(&new_client->dev, &dev_attr_in5_min);
 860                 device_create_file(&new_client->dev, &dev_attr_in6_min);
 861                 device_create_file(&new_client->dev, &dev_attr_in7_min);
 862                 device_create_file(&new_client->dev, &dev_attr_in8_min);
 863                 device_create_file(&new_client->dev, &dev_attr_in9_min);
 864                 device_create_file(&new_client->dev, &dev_attr_in10_min);
 865                 device_create_file(&new_client->dev, &dev_attr_in0_max);
 866                 device_create_file(&new_client->dev, &dev_attr_in1_max);
 867                 device_create_file(&new_client->dev, &dev_attr_in2_max);
 868                 device_create_file(&new_client->dev, &dev_attr_in3_max);
 869                 device_create_file(&new_client->dev, &dev_attr_in4_max);
 870                 device_create_file(&new_client->dev, &dev_attr_in5_max);
 871                 device_create_file(&new_client->dev, &dev_attr_in6_max);
 872                 device_create_file(&new_client->dev, &dev_attr_in7_max);
 873                 device_create_file(&new_client->dev, &dev_attr_in8_max);
 874                 device_create_file(&new_client->dev, &dev_attr_in9_max);
 875                 device_create_file(&new_client->dev, &dev_attr_in10_max);
 876                 device_create_file(&new_client->dev, &dev_attr_in0_status);
 877                 device_create_file(&new_client->dev, &dev_attr_in1_status);
 878                 device_create_file(&new_client->dev, &dev_attr_in2_status);
 879                 device_create_file(&new_client->dev, &dev_attr_in3_status);
 880                 device_create_file(&new_client->dev, &dev_attr_in4_status);
 881                 device_create_file(&new_client->dev, &dev_attr_in5_status);
 882                 device_create_file(&new_client->dev, &dev_attr_in6_status);
 883                 device_create_file(&new_client->dev, &dev_attr_in7_status);
 884                 device_create_file(&new_client->dev, &dev_attr_in8_status);
 885                 device_create_file(&new_client->dev, &dev_attr_in9_status);
 886                 device_create_file(&new_client->dev, &dev_attr_in10_status);
 887
 888                 device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
 889                 device_create_file(&new_client->dev, &dev_attr_vrm);
 890                 device_create_file(&new_client->dev, &dev_attr_alarms_in);
 891         }
 892
 893         if (data->tempnr) {
 894                 device_create_file(&new_client->dev, &dev_attr_temp1_input);
 895                 device_create_file(&new_client->dev, &dev_attr_temp2_input);
 896                 device_create_file(&new_client->dev, &dev_attr_temp1_min);
 897                 device_create_file(&new_client->dev, &dev_attr_temp2_min);
 898                 device_create_file(&new_client->dev, &dev_attr_temp1_max);
 899                 device_create_file(&new_client->dev, &dev_attr_temp2_max);
 900                 device_create_file(&new_client->dev, &dev_attr_temp1_crit);
 901                 device_create_file(&new_client->dev, &dev_attr_temp2_crit);
 902                 device_create_file(&new_client->dev, &dev_attr_temp1_status);
 903                 device_create_file(&new_client->dev, &dev_attr_temp2_status);
 904
 905                 device_create_file(&new_client->dev, &dev_attr_alarms_temp);
 906         }
 907         if (data->tempnr == 3) {
 908                 device_create_file(&new_client->dev, &dev_attr_temp3_input);
 909                 device_create_file(&new_client->dev, &dev_attr_temp3_min);
 910                 device_create_file(&new_client->dev, &dev_attr_temp3_max);
 911                 device_create_file(&new_client->dev, &dev_attr_temp3_crit);
 912                 device_create_file(&new_client->dev, &dev_attr_temp3_status);
 913         }
 914         if (data->innr == 14) {
 915                 device_create_file(&new_client->dev, &dev_attr_temp4_input);
 916                 device_create_file(&new_client->dev, &dev_attr_temp5_input);
 917                 device_create_file(&new_client->dev, &dev_attr_temp6_input);
 918                 device_create_file(&new_client->dev, &dev_attr_temp4_min);
 919                 device_create_file(&new_client->dev, &dev_attr_temp5_min);
 920                 device_create_file(&new_client->dev, &dev_attr_temp6_min);
 921                 device_create_file(&new_client->dev, &dev_attr_temp4_max);
 922                 device_create_file(&new_client->dev, &dev_attr_temp5_max);
 923                 device_create_file(&new_client->dev, &dev_attr_temp6_max);
 924                 device_create_file(&new_client->dev, &dev_attr_temp4_crit);
 925                 device_create_file(&new_client->dev, &dev_attr_temp5_crit);
 926                 device_create_file(&new_client->dev, &dev_attr_temp6_crit);
 927                 device_create_file(&new_client->dev, &dev_attr_temp4_status);
 928                 device_create_file(&new_client->dev, &dev_attr_temp5_status);
 929                 device_create_file(&new_client->dev, &dev_attr_temp6_status);
 930         }
 931
 932         if (data->fannr) {
 933                 if (FAN_CONFIG_MONITOR(data->fan_conf, 0)) {
 934                         device_create_file(&new_client->dev,
 935                                            &dev_attr_fan1_input);
 936                         device_create_file(&new_client->dev,
 937                                            &dev_attr_fan1_min);
 938                         device_create_file(&new_client->dev,
 939                                            &dev_attr_fan1_div);
 940                         device_create_file(&new_client->dev,
 941                                            &dev_attr_fan1_status);
 942                 }
 943
 944                 if (FAN_CONFIG_MONITOR(data->fan_conf, 1)) {
 945                         device_create_file(&new_client->dev,
 946                                            &dev_attr_fan2_input);
 947                         device_create_file(&new_client->dev,
 948                                            &dev_attr_fan2_min);
 949                         device_create_file(&new_client->dev,
 950                                            &dev_attr_fan2_div);
 951                         device_create_file(&new_client->dev,
 952                                            &dev_attr_fan2_status);
 953                 }
 954
 955                 if (FAN_CONFIG_CONTROL(data->fan_conf, 0))
 956                         device_create_file(&new_client->dev, &dev_attr_pwm1);
 957                 if (FAN_CONFIG_CONTROL(data->fan_conf, 1))
 958                         device_create_file(&new_client->dev, &dev_attr_pwm2);
 959         }
 960         if (data->fannr == 3) {
 961                 if (FAN_CONFIG_MONITOR(data->fan_conf, 2)) {
 962                         device_create_file(&new_client->dev,
 963                                            &dev_attr_fan3_input);
 964                         device_create_file(&new_client->dev,
 965                                            &dev_attr_fan3_min);
 966                         device_create_file(&new_client->dev,
 967                                            &dev_attr_fan3_div);
 968                         device_create_file(&new_client->dev,
 969                                            &dev_attr_fan3_status);
 970                 }
 971
 972                 if (FAN_CONFIG_CONTROL(data->fan_conf, 2))
 973                         device_create_file(&new_client->dev, &dev_attr_pwm3);
 974         }
 975
 976         return 0;
 977
 978 ERROR2:
 979         for (i = 0; i < 3; i++) {
 980                 if (data->address[i]) {
 981                         release_region(data->address[i], PC87360_EXTENT);
 982                 }
 983         }
 984 ERROR1:
 985         kfree(data);
 986         return err;
 987 }
 988
 989 static int pc87360_detach_client(struct i2c_client *client)
 990 {
 991         struct pc87360_data *data = i2c_get_clientdata(client);
 992         int i;
 993
 994         if ((i = i2c_detach_client(client))) {
 995                 dev_err(&client->dev, "Client deregistration failed, "
 996                         "client not detached.\n");
 997                 return i;
 998         }
 999
1000         for (i = 0; i < 3; i++) {
1001                 if (data->address[i]) {
1002                         release_region(data->address[i], PC87360_EXTENT);
1003                 }
1004         }
1005         kfree(data);
1006
1007         return 0;
1008 }
1009
1010 /* ldi is the logical device index
1011    bank is for voltages and temperatures only */
1012 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1013                               u8 reg)
1014 {
1015         int res;
1016
1017         down(&(data->lock));
1018         if (bank != NO_BANK)
1019                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1020         res = inb_p(data->address[ldi] + reg);
1021         up(&(data->lock));
1022
1023         return res;
1024 }
1025
1026 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1027                                 u8 reg, u8 value)
1028 {
1029         down(&(data->lock));
1030         if (bank != NO_BANK)
1031                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1032         outb_p(value, data->address[ldi] + reg);
1033         up(&(data->lock));
1034 }
1035
1036 static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
1037 {
1038         struct pc87360_data *data = i2c_get_clientdata(client);
1039         int i, nr;
1040         const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1041         const u8 init_temp[3] = { 2, 2, 1 };
1042         u8 reg;
1043
1044         if (init >= 2 && data->innr) {
1045                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1046                                          PC87365_REG_IN_CONVRATE);
1047                 dev_info(&client->dev, "VLM conversion set to"
1048                          "1s period, 160us delay\n");
1049                 pc87360_write_value(data, LD_IN, NO_BANK,
1050                                     PC87365_REG_IN_CONVRATE,
1051                                     (reg & 0xC0) | 0x11);
1052         }
1053
1054         nr = data->innr < 11 ? data->innr : 11;
1055         for (i=0; i<nr; i++) {
1056                 if (init >= init_in[i]) {
1057                         /* Forcibly enable voltage channel */
1058                         reg = pc87360_read_value(data, LD_IN, i,
1059                                                  PC87365_REG_IN_STATUS);
1060                         if (!(reg & 0x01)) {
1061                                 dev_dbg(&client->dev, "Forcibly "
1062                                         "enabling in%d\n", i);
1063                                 pc87360_write_value(data, LD_IN, i,
1064                                                     PC87365_REG_IN_STATUS,
1065                                                     (reg & 0x68) | 0x87);
1066                         }
1067                 }
1068         }
1069
1070         /* We can't blindly trust the Super-I/O space configuration bit,
1071            most BIOS won't set it properly */
1072         for (i=11; i<data->innr; i++) {
1073                 reg = pc87360_read_value(data, LD_IN, i,
1074                                          PC87365_REG_TEMP_STATUS);
1075                 use_thermistors = use_thermistors || (reg & 0x01);
1076         }
1077
1078         i = use_thermistors ? 2 : 0;
1079         for (; i<data->tempnr; i++) {
1080                 if (init >= init_temp[i]) {
1081                         /* Forcibly enable temperature channel */
1082                         reg = pc87360_read_value(data, LD_TEMP, i,
1083                                                  PC87365_REG_TEMP_STATUS);
1084                         if (!(reg & 0x01)) {
1085                                 dev_dbg(&client->dev, "Forcibly "
1086                                         "enabling temp%d\n", i+1);
1087                                 pc87360_write_value(data, LD_TEMP, i,
1088                                                     PC87365_REG_TEMP_STATUS,
1089                                                     0xCF);
1090                         }
1091                 }
1092         }
1093
1094         if (use_thermistors) {
1095                 for (i=11; i<data->innr; i++) {
1096                         if (init >= init_in[i]) {
1097                                 /* The pin may already be used by thermal
1098                                    diodes */
1099                                 reg = pc87360_read_value(data, LD_TEMP,
1100                                       (i-11)/2, PC87365_REG_TEMP_STATUS);
1101                                 if (reg & 0x01) {
1102                                         dev_dbg(&client->dev, "Skipping "
1103                                                 "temp%d, pin already in use "
1104                                                 "by temp%d\n", i-7, (i-11)/2);
1105                                         continue;
1106                                 }
1107
1108                                 /* Forcibly enable thermistor channel */
1109                                 reg = pc87360_read_value(data, LD_IN, i,
1110                                                          PC87365_REG_IN_STATUS);
1111                                 if (!(reg & 0x01)) {
1112                                         dev_dbg(&client->dev, "Forcibly "
1113                                                 "enabling temp%d\n", i-7);
1114                                         pc87360_write_value(data, LD_IN, i,
1115                                                 PC87365_REG_TEMP_STATUS,
1116                                                 (reg & 0x60) | 0x8F);
1117                                 }
1118                         }
1119                 }
1120         }
1121
1122         if (data->innr) {
1123                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1124                                          PC87365_REG_IN_CONFIG);
1125                 if (reg & 0x01) {
1126                         dev_dbg(&client->dev, "Forcibly "
1127                                 "enabling monitoring (VLM)\n");
1128                         pc87360_write_value(data, LD_IN, NO_BANK,
1129                                             PC87365_REG_IN_CONFIG,
1130                                             reg & 0xFE);
1131                 }
1132         }
1133
1134         if (data->tempnr) {
1135                 reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1136                                          PC87365_REG_TEMP_CONFIG);
1137                 if (reg & 0x01) {
1138                         dev_dbg(&client->dev, "Forcibly enabling "
1139                                 "monitoring (TMS)\n");
1140                         pc87360_write_value(data, LD_TEMP, NO_BANK,
1141                                             PC87365_REG_TEMP_CONFIG,
1142                                             reg & 0xFE);
1143                 }
1144
1145                 if (init >= 2) {
1146                         /* Chip config as documented by National Semi. */
1147                         pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1148                         /* We voluntarily omit the bank here, in case the
1149                            sequence itself matters. It shouldn't be a problem,
1150                            since nobody else is supposed to access the
1151                            device at that point. */
1152                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1153                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1154                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1155                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1156                 }
1157         }
1158 }
1159
1160 static void pc87360_autodiv(struct i2c_client *client, int nr)
1161 {
1162         struct pc87360_data *data = i2c_get_clientdata(client);
1163         u8 old_min = data->fan_min[nr];
1164
1165         /* Increase clock divider if needed and possible */
1166         if ((data->fan_status[nr] & 0x04) /* overflow flag */
1167          || (data->fan[nr] >= 224)) { /* next to overflow */
1168                 if ((data->fan_status[nr] & 0x60) != 0x60) {
1169                         data->fan_status[nr] += 0x20;
1170                         data->fan_min[nr] >>= 1;
1171                         data->fan[nr] >>= 1;
1172                         dev_dbg(&client->dev, "Increasing "
1173                                 "clock divider to %d for fan %d\n",
1174                                 FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
1175                 }
1176         } else {
1177                 /* Decrease clock divider if possible */
1178                 while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1179                  && data->fan[nr] < 85 /* bad accuracy */
1180                  && (data->fan_status[nr] & 0x60) != 0x00) {
1181                         data->fan_status[nr] -= 0x20;
1182                         data->fan_min[nr] <<= 1;
1183                         data->fan[nr] <<= 1;
1184                         dev_dbg(&client->dev, "Decreasing "
1185                                 "clock divider to %d for fan %d\n",
1186                                 FAN_DIV_FROM_REG(data->fan_status[nr]),
1187                                 nr+1);
1188                 }
1189         }
1190
1191         /* Write new fan min if it changed */
1192         if (old_min != data->fan_min[nr]) {
1193                 pc87360_write_value(data, LD_FAN, NO_BANK,
1194                                     PC87360_REG_FAN_MIN(nr),
1195                                     data->fan_min[nr]);
1196         }
1197 }
1198
1199 static struct pc87360_data *pc87360_update_device(struct device *dev)
1200 {
1201         struct i2c_client *client = to_i2c_client(dev);
1202         struct pc87360_data *data = i2c_get_clientdata(client);
1203         u8 i;
1204
1205         down(&data->update_lock);
1206
1207         if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1208                 dev_dbg(&client->dev, "Data update\n");
1209
1210                 /* Fans */
1211                 for (i = 0; i < data->fannr; i++) {
1212                         if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1213                                 data->fan_status[i] =
1214                                         pc87360_read_value(data, LD_FAN,
1215                                         NO_BANK, PC87360_REG_FAN_STATUS(i));
1216                                 data->fan[i] = pc87360_read_value(data, LD_FAN,
1217                                                NO_BANK, PC87360_REG_FAN(i));
1218                                 data->fan_min[i] = pc87360_read_value(data,
1219                                                    LD_FAN, NO_BANK,
1220                                                    PC87360_REG_FAN_MIN(i));
1221                                 /* Change clock divider if needed */
1222                                 pc87360_autodiv(client, i);
1223                                 /* Clear bits and write new divider */
1224                                 pc87360_write_value(data, LD_FAN, NO_BANK,
1225                                                     PC87360_REG_FAN_STATUS(i),
1226                                                     data->fan_status[i]);
1227                         }
1228                         if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1229                                 data->pwm[i] = pc87360_read_value(data, LD_FAN,
1230                                                NO_BANK, PC87360_REG_PWM(i));
1231                 }
1232
1233                 /* Voltages */
1234                 for (i = 0; i < data->innr; i++) {
1235                         data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1236                                              PC87365_REG_IN_STATUS);
1237                         /* Clear bits */
1238                         pc87360_write_value(data, LD_IN, i,
1239                                             PC87365_REG_IN_STATUS,
1240                                             data->in_status[i]);
1241                         if ((data->in_status[i] & 0x81) == 0x81) {
1242                                 data->in[i] = pc87360_read_value(data, LD_IN,
1243                                               i, PC87365_REG_IN);
1244                         }
1245                         if (data->in_status[i] & 0x01) {
1246                                 data->in_min[i] = pc87360_read_value(data,
1247                                                   LD_IN, i,
1248                                                   PC87365_REG_IN_MIN);
1249                                 data->in_max[i] = pc87360_read_value(data,
1250                                                   LD_IN, i,
1251                                                   PC87365_REG_IN_MAX);
1252                                 if (i >= 11)
1253                                         data->in_crit[i-11] =
1254                                                 pc87360_read_value(data, LD_IN,
1255                                                 i, PC87365_REG_TEMP_CRIT);
1256                         }
1257                 }
1258                 if (data->innr) {
1259                         data->in_alarms = pc87360_read_value(data, LD_IN,
1260                                           NO_BANK, PC87365_REG_IN_ALARMS1)
1261                                         | ((pc87360_read_value(data, LD_IN,
1262                                             NO_BANK, PC87365_REG_IN_ALARMS2)
1263                                             & 0x07) << 8);
1264                         data->vid = (data->vid_conf & 0xE0) ?
1265                                     pc87360_read_value(data, LD_IN,
1266                                     NO_BANK, PC87365_REG_VID) : 0x1F;
1267                 }
1268
1269                 /* Temperatures */
1270                 for (i = 0; i < data->tempnr; i++) {
1271                         data->temp_status[i] = pc87360_read_value(data,
1272                                                LD_TEMP, i,
1273                                                PC87365_REG_TEMP_STATUS);
1274                         /* Clear bits */
1275                         pc87360_write_value(data, LD_TEMP, i,
1276                                             PC87365_REG_TEMP_STATUS,
1277                                             data->temp_status[i]);
1278                         if ((data->temp_status[i] & 0x81) == 0x81) {
1279                                 data->temp[i] = pc87360_read_value(data,
1280                                                 LD_TEMP, i,
1281                                                 PC87365_REG_TEMP);
1282                         }
1283                         if (data->temp_status[i] & 0x01) {
1284                                 data->temp_min[i] = pc87360_read_value(data,
1285                                                     LD_TEMP, i,
1286                                                     PC87365_REG_TEMP_MIN);
1287                                 data->temp_max[i] = pc87360_read_value(data,
1288                                                     LD_TEMP, i,
1289                                                     PC87365_REG_TEMP_MAX);
1290                                 data->temp_crit[i] = pc87360_read_value(data,
1291                                                      LD_TEMP, i,
1292                                                      PC87365_REG_TEMP_CRIT);
1293                         }
1294                 }
1295                 if (data->tempnr) {
1296                         data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1297                                             NO_BANK, PC87365_REG_TEMP_ALARMS)
1298                                             & 0x3F;
1299                 }
1300
1301                 data->last_updated = jiffies;
1302                 data->valid = 1;
1303         }
1304
1305         up(&data->update_lock);
1306
1307         return data;
1308 }
1309
1310 static int __init pc87360_init(void)
1311 {
1312         int i;
1313
1314         if (pc87360_find(0x2e, &devid, extra_isa)
1315          && pc87360_find(0x4e, &devid, extra_isa)) {
1316                 printk(KERN_WARNING "pc87360: PC8736x not detected, "
1317                        "module not inserted.\n");
1318                 return -ENODEV;
1319         }
1320
1321         /* Arbitrarily pick one of the addresses */
1322         for (i = 0; i < 3; i++) {
1323                 if (extra_isa[i] != 0x0000) {
1324                         normal_isa[0] = extra_isa[i];
1325                         break;
1326                 }
1327         }
1328
1329         if (normal_isa[0] == 0x0000) {
1330                 printk(KERN_WARNING "pc87360: No active logical device, "
1331                        "module not inserted.\n");
1332                 return -ENODEV;
1333         }
1334
1335         return i2c_add_driver(&pc87360_driver);
1336 }
1337
1338 static void __exit pc87360_exit(void)
1339 {
1340         i2c_del_driver(&pc87360_driver);
1341 }
1342
1343
1344 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1345 MODULE_DESCRIPTION("PC8736x hardware monitor");
1346 MODULE_LICENSE("GPL");
1347
1348 module_init(pc87360_init);
1349 module_exit(pc87360_exit);