drivers/hwmon/f71805f.c

   1 /*
   2  * f71805f.c - driver for the Fintek F71805F/FG Super-I/O chip integrated
   3  *             hardware monitoring features
   4  * Copyright (C) 2005  Jean Delvare <khali@linux-fr.org>
   5  *
   6  * The F71805F/FG is a LPC Super-I/O chip made by Fintek. It integrates
   7  * complete hardware monitoring features: voltage, fan and temperature
   8  * sensors, and manual and automatic fan speed control.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/jiffies.h>
  29 #include <linux/platform_device.h>
  30 #include <linux/hwmon.h>
  31 #include <linux/hwmon-sysfs.h>
  32 #include <linux/err.h>
  33 #include <linux/mutex.h>
  34 #include <asm/io.h>
  35
  36 static struct platform_device *pdev;
  37
  38 #define DRVNAME "f71805f"
  39
  40 /*
  41  * Super-I/O constants and functions
  42  */
  43
  44 #define F71805F_LD_HWM          0x04
  45
  46 #define SIO_REG_LDSEL           0x07    /* Logical device select */
  47 #define SIO_REG_DEVID           0x20    /* Device ID (2 bytes) */
  48 #define SIO_REG_DEVREV          0x22    /* Device revision */
  49 #define SIO_REG_MANID           0x23    /* Fintek ID (2 bytes) */
  50 #define SIO_REG_ENABLE          0x30    /* Logical device enable */
  51 #define SIO_REG_ADDR            0x60    /* Logical device address (2 bytes) */
  52
  53 #define SIO_FINTEK_ID           0x1934
  54 #define SIO_F71805F_ID          0x0406
  55
  56 static inline int
  57 superio_inb(int base, int reg)
  58 {
  59         outb(reg, base);
  60         return inb(base + 1);
  61 }
  62
  63 static int
  64 superio_inw(int base, int reg)
  65 {
  66         int val;
  67         outb(reg++, base);
  68         val = inb(base + 1) << 8;
  69         outb(reg, base);
  70         val |= inb(base + 1);
  71         return val;
  72 }
  73
  74 static inline void
  75 superio_select(int base, int ld)
  76 {
  77         outb(SIO_REG_LDSEL, base);
  78         outb(ld, base + 1);
  79 }
  80
  81 static inline void
  82 superio_enter(int base)
  83 {
  84         outb(0x87, base);
  85         outb(0x87, base);
  86 }
  87
  88 static inline void
  89 superio_exit(int base)
  90 {
  91         outb(0xaa, base);
  92 }
  93
  94 /*
  95  * ISA constants
  96  */
  97
  98 #define REGION_LENGTH           2
  99 #define ADDR_REG_OFFSET         0
 100 #define DATA_REG_OFFSET         1
 101
 102 /*
 103  * Registers
 104  */
 105
 106 /* in nr from 0 to 8 (8-bit values) */
 107 #define F71805F_REG_IN(nr)              (0x10 + (nr))
 108 #define F71805F_REG_IN_HIGH(nr)         (0x40 + 2 * (nr))
 109 #define F71805F_REG_IN_LOW(nr)          (0x41 + 2 * (nr))
 110 /* fan nr from 0 to 2 (12-bit values, two registers) */
 111 #define F71805F_REG_FAN(nr)             (0x20 + 2 * (nr))
 112 #define F71805F_REG_FAN_LOW(nr)         (0x28 + 2 * (nr))
 113 #define F71805F_REG_FAN_CTRL(nr)        (0x60 + 16 * (nr))
 114 /* temp nr from 0 to 2 (8-bit values) */
 115 #define F71805F_REG_TEMP(nr)            (0x1B + (nr))
 116 #define F71805F_REG_TEMP_HIGH(nr)       (0x54 + 2 * (nr))
 117 #define F71805F_REG_TEMP_HYST(nr)       (0x55 + 2 * (nr))
 118 #define F71805F_REG_TEMP_MODE           0x01
 119
 120 #define F71805F_REG_START               0x00
 121 /* status nr from 0 to 2 */
 122 #define F71805F_REG_STATUS(nr)          (0x36 + (nr))
 123
 124 /*
 125  * Data structures and manipulation thereof
 126  */
 127
 128 struct f71805f_data {
 129         unsigned short addr;
 130         const char *name;
 131         struct mutex lock;
 132         struct class_device *class_dev;
 133
 134         struct mutex update_lock;
 135         char valid;             /* !=0 if following fields are valid */
 136         unsigned long last_updated;     /* In jiffies */
 137         unsigned long last_limits;      /* In jiffies */
 138
 139         /* Register values */
 140         u8 in[9];
 141         u8 in_high[9];
 142         u8 in_low[9];
 143         u16 fan[3];
 144         u16 fan_low[3];
 145         u8 fan_enabled;         /* Read once at init time */
 146         u8 temp[3];
 147         u8 temp_high[3];
 148         u8 temp_hyst[3];
 149         u8 temp_mode;
 150         u8 alarms[3];
 151 };
 152
 153 static inline long in_from_reg(u8 reg)
 154 {
 155         return (reg * 8);
 156 }
 157
 158 /* The 2 least significant bits are not used */
 159 static inline u8 in_to_reg(long val)
 160 {
 161         if (val <= 0)
 162                 return 0;
 163         if (val >= 2016)
 164                 return 0xfc;
 165         return (((val + 16) / 32) << 2);
 166 }
 167
 168 /* in0 is downscaled by a factor 2 internally */
 169 static inline long in0_from_reg(u8 reg)
 170 {
 171         return (reg * 16);
 172 }
 173
 174 static inline u8 in0_to_reg(long val)
 175 {
 176         if (val <= 0)
 177                 return 0;
 178         if (val >= 4032)
 179                 return 0xfc;
 180         return (((val + 32) / 64) << 2);
 181 }
 182
 183 /* The 4 most significant bits are not used */
 184 static inline long fan_from_reg(u16 reg)
 185 {
 186         reg &= 0xfff;
 187         if (!reg || reg == 0xfff)
 188                 return 0;
 189         return (1500000 / reg);
 190 }
 191
 192 static inline u16 fan_to_reg(long rpm)
 193 {
 194         /* If the low limit is set below what the chip can measure,
 195            store the largest possible 12-bit value in the registers,
 196            so that no alarm will ever trigger. */
 197         if (rpm < 367)
 198                 return 0xfff;
 199         return (1500000 / rpm);
 200 }
 201
 202 static inline long temp_from_reg(u8 reg)
 203 {
 204         return (reg * 1000);
 205 }
 206
 207 static inline u8 temp_to_reg(long val)
 208 {
 209         if (val < 0)
 210                 val = 0;
 211         else if (val > 1000 * 0xff)
 212                 val = 0xff;
 213         return ((val + 500) / 1000);
 214 }
 215
 216 /*
 217  * Device I/O access
 218  */
 219
 220 static u8 f71805f_read8(struct f71805f_data *data, u8 reg)
 221 {
 222         u8 val;
 223
 224         mutex_lock(&data->lock);
 225         outb(reg, data->addr + ADDR_REG_OFFSET);
 226         val = inb(data->addr + DATA_REG_OFFSET);
 227         mutex_unlock(&data->lock);
 228
 229         return val;
 230 }
 231
 232 static void f71805f_write8(struct f71805f_data *data, u8 reg, u8 val)
 233 {
 234         mutex_lock(&data->lock);
 235         outb(reg, data->addr + ADDR_REG_OFFSET);
 236         outb(val, data->addr + DATA_REG_OFFSET);
 237         mutex_unlock(&data->lock);
 238 }
 239
 240 /* It is important to read the MSB first, because doing so latches the
 241    value of the LSB, so we are sure both bytes belong to the same value. */
 242 static u16 f71805f_read16(struct f71805f_data *data, u8 reg)
 243 {
 244         u16 val;
 245
 246         mutex_lock(&data->lock);
 247         outb(reg, data->addr + ADDR_REG_OFFSET);
 248         val = inb(data->addr + DATA_REG_OFFSET) << 8;
 249         outb(++reg, data->addr + ADDR_REG_OFFSET);
 250         val |= inb(data->addr + DATA_REG_OFFSET);
 251         mutex_unlock(&data->lock);
 252
 253         return val;
 254 }
 255
 256 static void f71805f_write16(struct f71805f_data *data, u8 reg, u16 val)
 257 {
 258         mutex_lock(&data->lock);
 259         outb(reg, data->addr + ADDR_REG_OFFSET);
 260         outb(val >> 8, data->addr + DATA_REG_OFFSET);
 261         outb(++reg, data->addr + ADDR_REG_OFFSET);
 262         outb(val & 0xff, data->addr + DATA_REG_OFFSET);
 263         mutex_unlock(&data->lock);
 264 }
 265
 266 static struct f71805f_data *f71805f_update_device(struct device *dev)
 267 {
 268         struct f71805f_data *data = dev_get_drvdata(dev);
 269         int nr;
 270
 271         mutex_lock(&data->update_lock);
 272
 273         /* Limit registers cache is refreshed after 60 seconds */
 274         if (time_after(jiffies, data->last_updated + 60 * HZ)
 275          || !data->valid) {
 276                 for (nr = 0; nr < 9; nr++) {
 277                         data->in_high[nr] = f71805f_read8(data,
 278                                             F71805F_REG_IN_HIGH(nr));
 279                         data->in_low[nr] = f71805f_read8(data,
 280                                            F71805F_REG_IN_LOW(nr));
 281                 }
 282                 for (nr = 0; nr < 3; nr++) {
 283                         if (data->fan_enabled & (1 << nr))
 284                                 data->fan_low[nr] = f71805f_read16(data,
 285                                                     F71805F_REG_FAN_LOW(nr));
 286                 }
 287                 for (nr = 0; nr < 3; nr++) {
 288                         data->temp_high[nr] = f71805f_read8(data,
 289                                               F71805F_REG_TEMP_HIGH(nr));
 290                         data->temp_hyst[nr] = f71805f_read8(data,
 291                                               F71805F_REG_TEMP_HYST(nr));
 292                 }
 293                 data->temp_mode = f71805f_read8(data, F71805F_REG_TEMP_MODE);
 294
 295                 data->last_limits = jiffies;
 296         }
 297
 298         /* Measurement registers cache is refreshed after 1 second */
 299         if (time_after(jiffies, data->last_updated + HZ)
 300          || !data->valid) {
 301                 for (nr = 0; nr < 9; nr++) {
 302                         data->in[nr] = f71805f_read8(data,
 303                                        F71805F_REG_IN(nr));
 304                 }
 305                 for (nr = 0; nr < 3; nr++) {
 306                         if (data->fan_enabled & (1 << nr))
 307                                 data->fan[nr] = f71805f_read16(data,
 308                                                 F71805F_REG_FAN(nr));
 309                 }
 310                 for (nr = 0; nr < 3; nr++) {
 311                         data->temp[nr] = f71805f_read8(data,
 312                                          F71805F_REG_TEMP(nr));
 313                 }
 314                 for (nr = 0; nr < 3; nr++) {
 315                         data->alarms[nr] = f71805f_read8(data,
 316                                            F71805F_REG_STATUS(nr));
 317                 }
 318
 319                 data->last_updated = jiffies;
 320                 data->valid = 1;
 321         }
 322
 323         mutex_unlock(&data->update_lock);
 324
 325         return data;
 326 }
 327
 328 /*
 329  * Sysfs interface
 330  */
 331
 332 static ssize_t show_in0(struct device *dev, struct device_attribute *devattr,
 333                         char *buf)
 334 {
 335         struct f71805f_data *data = f71805f_update_device(dev);
 336
 337         return sprintf(buf, "%ld\n", in0_from_reg(data->in[0]));
 338 }
 339
 340 static ssize_t show_in0_max(struct device *dev, struct device_attribute
 341                             *devattr, char *buf)
 342 {
 343         struct f71805f_data *data = f71805f_update_device(dev);
 344
 345         return sprintf(buf, "%ld\n", in0_from_reg(data->in_high[0]));
 346 }
 347
 348 static ssize_t show_in0_min(struct device *dev, struct device_attribute
 349                             *devattr, char *buf)
 350 {
 351         struct f71805f_data *data = f71805f_update_device(dev);
 352
 353         return sprintf(buf, "%ld\n", in0_from_reg(data->in_low[0]));
 354 }
 355
 356 static ssize_t set_in0_max(struct device *dev, struct device_attribute
 357                            *devattr, const char *buf, size_t count)
 358 {
 359         struct f71805f_data *data = dev_get_drvdata(dev);
 360         long val = simple_strtol(buf, NULL, 10);
 361
 362         mutex_lock(&data->update_lock);
 363         data->in_high[0] = in0_to_reg(val);
 364         f71805f_write8(data, F71805F_REG_IN_HIGH(0), data->in_high[0]);
 365         mutex_unlock(&data->update_lock);
 366
 367         return count;
 368 }
 369
 370 static ssize_t set_in0_min(struct device *dev, struct device_attribute
 371                            *devattr, const char *buf, size_t count)
 372 {
 373         struct f71805f_data *data = dev_get_drvdata(dev);
 374         long val = simple_strtol(buf, NULL, 10);
 375
 376         mutex_lock(&data->update_lock);
 377         data->in_low[0] = in0_to_reg(val);
 378         f71805f_write8(data, F71805F_REG_IN_LOW(0), data->in_low[0]);
 379         mutex_unlock(&data->update_lock);
 380
 381         return count;
 382 }
 383
 384 static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
 385                        char *buf)
 386 {
 387         struct f71805f_data *data = f71805f_update_device(dev);
 388         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 389         int nr = attr->index;
 390
 391         return sprintf(buf, "%ld\n", in_from_reg(data->in[nr]));
 392 }
 393
 394 static ssize_t show_in_max(struct device *dev, struct device_attribute
 395                            *devattr, char *buf)
 396 {
 397         struct f71805f_data *data = f71805f_update_device(dev);
 398         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 399         int nr = attr->index;
 400
 401         return sprintf(buf, "%ld\n", in_from_reg(data->in_high[nr]));
 402 }
 403
 404 static ssize_t show_in_min(struct device *dev, struct device_attribute
 405                            *devattr, char *buf)
 406 {
 407         struct f71805f_data *data = f71805f_update_device(dev);
 408         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 409         int nr = attr->index;
 410
 411         return sprintf(buf, "%ld\n", in_from_reg(data->in_low[nr]));
 412 }
 413
 414 static ssize_t set_in_max(struct device *dev, struct device_attribute
 415                           *devattr, const char *buf, size_t count)
 416 {
 417         struct f71805f_data *data = dev_get_drvdata(dev);
 418         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 419         int nr = attr->index;
 420         long val = simple_strtol(buf, NULL, 10);
 421
 422         mutex_lock(&data->update_lock);
 423         data->in_high[nr] = in_to_reg(val);
 424         f71805f_write8(data, F71805F_REG_IN_HIGH(nr), data->in_high[nr]);
 425         mutex_unlock(&data->update_lock);
 426
 427         return count;
 428 }
 429
 430 static ssize_t set_in_min(struct device *dev, struct device_attribute
 431                           *devattr, const char *buf, size_t count)
 432 {
 433         struct f71805f_data *data = dev_get_drvdata(dev);
 434         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 435         int nr = attr->index;
 436         long val = simple_strtol(buf, NULL, 10);
 437
 438         mutex_lock(&data->update_lock);
 439         data->in_low[nr] = in_to_reg(val);
 440         f71805f_write8(data, F71805F_REG_IN_LOW(nr), data->in_low[nr]);
 441         mutex_unlock(&data->update_lock);
 442
 443         return count;
 444 }
 445
 446 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
 447                         char *buf)
 448 {
 449         struct f71805f_data *data = f71805f_update_device(dev);
 450         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 451         int nr = attr->index;
 452
 453         return sprintf(buf, "%ld\n", fan_from_reg(data->fan[nr]));
 454 }
 455
 456 static ssize_t show_fan_min(struct device *dev, struct device_attribute
 457                             *devattr, char *buf)
 458 {
 459         struct f71805f_data *data = f71805f_update_device(dev);
 460         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 461         int nr = attr->index;
 462
 463         return sprintf(buf, "%ld\n", fan_from_reg(data->fan_low[nr]));
 464 }
 465
 466 static ssize_t set_fan_min(struct device *dev, struct device_attribute
 467                            *devattr, const char *buf, size_t count)
 468 {
 469         struct f71805f_data *data = dev_get_drvdata(dev);
 470         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 471         int nr = attr->index;
 472         long val = simple_strtol(buf, NULL, 10);
 473
 474         mutex_lock(&data->update_lock);
 475         data->fan_low[nr] = fan_to_reg(val);
 476         f71805f_write16(data, F71805F_REG_FAN_LOW(nr), data->fan_low[nr]);
 477         mutex_unlock(&data->update_lock);
 478
 479         return count;
 480 }
 481
 482 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
 483                          char *buf)
 484 {
 485         struct f71805f_data *data = f71805f_update_device(dev);
 486         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 487         int nr = attr->index;
 488
 489         return sprintf(buf, "%ld\n", temp_from_reg(data->temp[nr]));
 490 }
 491
 492 static ssize_t show_temp_max(struct device *dev, struct device_attribute
 493                              *devattr, char *buf)
 494 {
 495         struct f71805f_data *data = f71805f_update_device(dev);
 496         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 497         int nr = attr->index;
 498
 499         return sprintf(buf, "%ld\n", temp_from_reg(data->temp_high[nr]));
 500 }
 501
 502 static ssize_t show_temp_hyst(struct device *dev, struct device_attribute
 503                               *devattr, char *buf)
 504 {
 505         struct f71805f_data *data = f71805f_update_device(dev);
 506         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 507         int nr = attr->index;
 508
 509         return sprintf(buf, "%ld\n", temp_from_reg(data->temp_hyst[nr]));
 510 }
 511
 512 static ssize_t show_temp_type(struct device *dev, struct device_attribute
 513                               *devattr, char *buf)
 514 {
 515         struct f71805f_data *data = f71805f_update_device(dev);
 516         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 517         int nr = attr->index;
 518
 519         /* 3 is diode, 4 is thermistor */
 520         return sprintf(buf, "%u\n", (data->temp_mode & (1 << nr)) ? 3 : 4);
 521 }
 522
 523 static ssize_t set_temp_max(struct device *dev, struct device_attribute
 524                             *devattr, const char *buf, size_t count)
 525 {
 526         struct f71805f_data *data = dev_get_drvdata(dev);
 527         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 528         int nr = attr->index;
 529         long val = simple_strtol(buf, NULL, 10);
 530
 531         mutex_lock(&data->update_lock);
 532         data->temp_high[nr] = temp_to_reg(val);
 533         f71805f_write8(data, F71805F_REG_TEMP_HIGH(nr), data->temp_high[nr]);
 534         mutex_unlock(&data->update_lock);
 535
 536         return count;
 537 }
 538
 539 static ssize_t set_temp_hyst(struct device *dev, struct device_attribute
 540                              *devattr, const char *buf, size_t count)
 541 {
 542         struct f71805f_data *data = dev_get_drvdata(dev);
 543         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 544         int nr = attr->index;
 545         long val = simple_strtol(buf, NULL, 10);
 546
 547         mutex_lock(&data->update_lock);
 548         data->temp_hyst[nr] = temp_to_reg(val);
 549         f71805f_write8(data, F71805F_REG_TEMP_HYST(nr), data->temp_hyst[nr]);
 550         mutex_unlock(&data->update_lock);
 551
 552         return count;
 553 }
 554
 555 static ssize_t show_alarms_in(struct device *dev, struct device_attribute
 556                               *devattr, char *buf)
 557 {
 558         struct f71805f_data *data = f71805f_update_device(dev);
 559
 560         return sprintf(buf, "%d\n", data->alarms[0] |
 561                                     ((data->alarms[1] & 0x01) << 8));
 562 }
 563
 564 static ssize_t show_alarms_fan(struct device *dev, struct device_attribute
 565                                *devattr, char *buf)
 566 {
 567         struct f71805f_data *data = f71805f_update_device(dev);
 568
 569         return sprintf(buf, "%d\n", data->alarms[2] & 0x07);
 570 }
 571
 572 static ssize_t show_alarms_temp(struct device *dev, struct device_attribute
 573                                 *devattr, char *buf)
 574 {
 575         struct f71805f_data *data = f71805f_update_device(dev);
 576
 577         return sprintf(buf, "%d\n", (data->alarms[1] >> 3) & 0x07);
 578 }
 579
 580 static ssize_t show_name(struct device *dev, struct device_attribute
 581                          *devattr, char *buf)
 582 {
 583         struct f71805f_data *data = dev_get_drvdata(dev);
 584
 585         return sprintf(buf, "%s\n", data->name);
 586 }
 587
 588 static struct device_attribute f71805f_dev_attr[] = {
 589         __ATTR(in0_input, S_IRUGO, show_in0, NULL),
 590         __ATTR(in0_max, S_IRUGO| S_IWUSR, show_in0_max, set_in0_max),
 591         __ATTR(in0_min, S_IRUGO| S_IWUSR, show_in0_min, set_in0_min),
 592         __ATTR(alarms_in, S_IRUGO, show_alarms_in, NULL),
 593         __ATTR(alarms_fan, S_IRUGO, show_alarms_fan, NULL),
 594         __ATTR(alarms_temp, S_IRUGO, show_alarms_temp, NULL),
 595         __ATTR(name, S_IRUGO, show_name, NULL),
 596 };
 597
 598 static struct sensor_device_attribute f71805f_sensor_attr[] = {
 599         SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
 600         SENSOR_ATTR(in1_max, S_IRUGO | S_IWUSR,
 601                     show_in_max, set_in_max, 1),
 602         SENSOR_ATTR(in1_min, S_IRUGO | S_IWUSR,
 603                     show_in_min, set_in_min, 1),
 604         SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
 605         SENSOR_ATTR(in2_max, S_IRUGO | S_IWUSR,
 606                     show_in_max, set_in_max, 2),
 607         SENSOR_ATTR(in2_min, S_IRUGO | S_IWUSR,
 608                     show_in_min, set_in_min, 2),
 609         SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
 610         SENSOR_ATTR(in3_max, S_IRUGO | S_IWUSR,
 611                     show_in_max, set_in_max, 3),
 612         SENSOR_ATTR(in3_min, S_IRUGO | S_IWUSR,
 613                     show_in_min, set_in_min, 3),
 614         SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
 615         SENSOR_ATTR(in4_max, S_IRUGO | S_IWUSR,
 616                     show_in_max, set_in_max, 4),
 617         SENSOR_ATTR(in4_min, S_IRUGO | S_IWUSR,
 618                     show_in_min, set_in_min, 4),
 619         SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
 620         SENSOR_ATTR(in5_max, S_IRUGO | S_IWUSR,
 621                     show_in_max, set_in_max, 5),
 622         SENSOR_ATTR(in5_min, S_IRUGO | S_IWUSR,
 623                     show_in_min, set_in_min, 5),
 624         SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
 625         SENSOR_ATTR(in6_max, S_IRUGO | S_IWUSR,
 626                     show_in_max, set_in_max, 6),
 627         SENSOR_ATTR(in6_min, S_IRUGO | S_IWUSR,
 628                     show_in_min, set_in_min, 6),
 629         SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
 630         SENSOR_ATTR(in7_max, S_IRUGO | S_IWUSR,
 631                     show_in_max, set_in_max, 7),
 632         SENSOR_ATTR(in7_min, S_IRUGO | S_IWUSR,
 633                     show_in_min, set_in_min, 7),
 634         SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
 635         SENSOR_ATTR(in8_max, S_IRUGO | S_IWUSR,
 636                     show_in_max, set_in_max, 8),
 637         SENSOR_ATTR(in8_min, S_IRUGO | S_IWUSR,
 638                     show_in_min, set_in_min, 8),
 639
 640         SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
 641         SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
 642                     show_temp_max, set_temp_max, 0),
 643         SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
 644                     show_temp_hyst, set_temp_hyst, 0),
 645         SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
 646         SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
 647         SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
 648                     show_temp_max, set_temp_max, 1),
 649         SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
 650                     show_temp_hyst, set_temp_hyst, 1),
 651         SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
 652         SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
 653         SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
 654                     show_temp_max, set_temp_max, 2),
 655         SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR,
 656                     show_temp_hyst, set_temp_hyst, 2),
 657         SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
 658 };
 659
 660 static struct sensor_device_attribute f71805f_fan_attr[] = {
 661         SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
 662         SENSOR_ATTR(fan1_min, S_IRUGO | S_IWUSR,
 663                     show_fan_min, set_fan_min, 0),
 664         SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
 665         SENSOR_ATTR(fan2_min, S_IRUGO | S_IWUSR,
 666                     show_fan_min, set_fan_min, 1),
 667         SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
 668         SENSOR_ATTR(fan3_min, S_IRUGO | S_IWUSR,
 669                     show_fan_min, set_fan_min, 2),
 670 };
 671
 672 /*
 673  * Device registration and initialization
 674  */
 675
 676 static void __devinit f71805f_init_device(struct f71805f_data *data)
 677 {
 678         u8 reg;
 679         int i;
 680
 681         reg = f71805f_read8(data, F71805F_REG_START);
 682         if ((reg & 0x41) != 0x01) {
 683                 printk(KERN_DEBUG DRVNAME ": Starting monitoring "
 684                        "operations\n");
 685                 f71805f_write8(data, F71805F_REG_START, (reg | 0x01) & ~0x40);
 686         }
 687
 688         /* Fan monitoring can be disabled. If it is, we won't be polling
 689            the register values, and won't create the related sysfs files. */
 690         for (i = 0; i < 3; i++) {
 691                 reg = f71805f_read8(data, F71805F_REG_FAN_CTRL(i));
 692                 if (!(reg & 0x80))
 693                         data->fan_enabled |= (1 << i);
 694         }
 695 }
 696
 697 static int __devinit f71805f_probe(struct platform_device *pdev)
 698 {
 699         struct f71805f_data *data;
 700         struct resource *res;
 701         int i, err;
 702
 703         if (!(data = kzalloc(sizeof(struct f71805f_data), GFP_KERNEL))) {
 704                 err = -ENOMEM;
 705                 printk(KERN_ERR DRVNAME ": Out of memory\n");
 706                 goto exit;
 707         }
 708
 709         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
 710         data->addr = res->start;
 711         mutex_init(&data->lock);
 712         data->name = "f71805f";
 713         mutex_init(&data->update_lock);
 714
 715         platform_set_drvdata(pdev, data);
 716
 717         data->class_dev = hwmon_device_register(&pdev->dev);
 718         if (IS_ERR(data->class_dev)) {
 719                 err = PTR_ERR(data->class_dev);
 720                 dev_err(&pdev->dev, "Class registration failed (%d)\n", err);
 721                 goto exit_free;
 722         }
 723
 724         /* Initialize the F71805F chip */
 725         f71805f_init_device(data);
 726
 727         /* Register sysfs interface files */
 728         for (i = 0; i < ARRAY_SIZE(f71805f_dev_attr); i++) {
 729                 err = device_create_file(&pdev->dev, &f71805f_dev_attr[i]);
 730                 if (err)
 731                         goto exit_class;
 732         }
 733         for (i = 0; i < ARRAY_SIZE(f71805f_sensor_attr); i++) {
 734                 err = device_create_file(&pdev->dev,
 735                                          &f71805f_sensor_attr[i].dev_attr);
 736                 if (err)
 737                         goto exit_class;
 738         }
 739         for (i = 0; i < ARRAY_SIZE(f71805f_fan_attr); i++) {
 740                 if (!(data->fan_enabled & (1 << (i / 2))))
 741                         continue;
 742                 err = device_create_file(&pdev->dev,
 743                                          &f71805f_fan_attr[i].dev_attr);
 744                 if (err)
 745                         goto exit_class;
 746         }
 747
 748         return 0;
 749
 750 exit_class:
 751         dev_err(&pdev->dev, "Sysfs interface creation failed\n");
 752         hwmon_device_unregister(data->class_dev);
 753 exit_free:
 754         kfree(data);
 755 exit:
 756         return err;
 757 }
 758
 759 static int __devexit f71805f_remove(struct platform_device *pdev)
 760 {
 761         struct f71805f_data *data = platform_get_drvdata(pdev);
 762
 763         platform_set_drvdata(pdev, NULL);
 764         hwmon_device_unregister(data->class_dev);
 765         kfree(data);
 766
 767         return 0;
 768 }
 769
 770 static struct platform_driver f71805f_driver = {
 771         .driver = {
 772                 .owner  = THIS_MODULE,
 773                 .name   = DRVNAME,
 774         },
 775         .probe          = f71805f_probe,
 776         .remove         = __devexit_p(f71805f_remove),
 777 };
 778
 779 static int __init f71805f_device_add(unsigned short address)
 780 {
 781         struct resource res = {
 782                 .start  = address,
 783                 .end    = address + REGION_LENGTH - 1,
 784                 .flags  = IORESOURCE_IO,
 785         };
 786         int err;
 787
 788         pdev = platform_device_alloc(DRVNAME, address);
 789         if (!pdev) {
 790                 err = -ENOMEM;
 791                 printk(KERN_ERR DRVNAME ": Device allocation failed\n");
 792                 goto exit;
 793         }
 794
 795         res.name = pdev->name;
 796         err = platform_device_add_resources(pdev, &res, 1);
 797         if (err) {
 798                 printk(KERN_ERR DRVNAME ": Device resource addition failed "
 799                        "(%d)\n", err);
 800                 goto exit_device_put;
 801         }
 802
 803         err = platform_device_add(pdev);
 804         if (err) {
 805                 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
 806                        err);
 807                 goto exit_device_put;
 808         }
 809
 810         return 0;
 811
 812 exit_device_put:
 813         platform_device_put(pdev);
 814 exit:
 815         return err;
 816 }
 817
 818 static int __init f71805f_find(int sioaddr, unsigned short *address)
 819 {
 820         int err = -ENODEV;
 821         u16 devid;
 822
 823         superio_enter(sioaddr);
 824
 825         devid = superio_inw(sioaddr, SIO_REG_MANID);
 826         if (devid != SIO_FINTEK_ID)
 827                 goto exit;
 828
 829         devid = superio_inw(sioaddr, SIO_REG_DEVID);
 830         if (devid != SIO_F71805F_ID) {
 831                 printk(KERN_INFO DRVNAME ": Unsupported Fintek device, "
 832                        "skipping\n");
 833                 goto exit;
 834         }
 835
 836         superio_select(sioaddr, F71805F_LD_HWM);
 837         if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) {
 838                 printk(KERN_WARNING DRVNAME ": Device not activated, "
 839                        "skipping\n");
 840                 goto exit;
 841         }
 842
 843         *address = superio_inw(sioaddr, SIO_REG_ADDR);
 844         if (*address == 0) {
 845                 printk(KERN_WARNING DRVNAME ": Base address not set, "
 846                        "skipping\n");
 847                 goto exit;
 848         }
 849
 850         err = 0;
 851         printk(KERN_INFO DRVNAME ": Found F71805F chip at %#x, revision %u\n",
 852                *address, superio_inb(sioaddr, SIO_REG_DEVREV));
 853
 854 exit:
 855         superio_exit(sioaddr);
 856         return err;
 857 }
 858
 859 static int __init f71805f_init(void)
 860 {
 861         int err;
 862         unsigned short address;
 863
 864         if (f71805f_find(0x2e, &address)
 865          && f71805f_find(0x4e, &address))
 866                 return -ENODEV;
 867
 868         err = platform_driver_register(&f71805f_driver);
 869         if (err)
 870                 goto exit;
 871
 872         /* Sets global pdev as a side effect */
 873         err = f71805f_device_add(address);
 874         if (err)
 875                 goto exit_driver;
 876
 877         return 0;
 878
 879 exit_driver:
 880         platform_driver_unregister(&f71805f_driver);
 881 exit:
 882         return err;
 883 }
 884
 885 static void __exit f71805f_exit(void)
 886 {
 887         platform_device_unregister(pdev);
 888         platform_driver_unregister(&f71805f_driver);
 889 }
 890
 891 MODULE_AUTHOR("Jean Delvare <khali@linux-fr>");
 892 MODULE_LICENSE("GPL");
 893 MODULE_DESCRIPTION("F71805F hardware monitoring driver");
 894
 895 module_init(f71805f_init);
 896 module_exit(f71805f_exit);