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 <asm/io.h>
  34
  35 static struct platform_device *pdev;
  36
  37 #define DRVNAME "f71805f"
  38
  39 /*
  40  * Super-I/O constants and functions
  41  */
  42
  43 #define F71805F_LD_HWM          0x04
  44
  45 #define SIO_REG_LDSEL           0x07    /* Logical device select */
  46 #define SIO_REG_DEVID           0x20    /* Device ID (2 bytes) */
  47 #define SIO_REG_DEVREV          0x22    /* Device revision */
  48 #define SIO_REG_MANID           0x23    /* Fintek ID (2 bytes) */
  49 #define SIO_REG_ENABLE          0x30    /* Logical device enable */
  50 #define SIO_REG_ADDR            0x60    /* Logical device address (2 bytes) */
  51
  52 #define SIO_FINTEK_ID           0x1934
  53 #define SIO_F71805F_ID          0x0406
  54
  55 static inline int
  56 superio_inb(int base, int reg)
  57 {
  58         outb(reg, base);
  59         return inb(base + 1);
  60 }
  61
  62 static int
  63 superio_inw(int base, int reg)
  64 {
  65         int val;
  66         outb(reg++, base);
  67         val = inb(base + 1) << 8;
  68         outb(reg, base);
  69         val |= inb(base + 1);
  70         return val;
  71 }
  72
  73 static inline void
  74 superio_select(int base, int ld)
  75 {
  76         outb(SIO_REG_LDSEL, base);
  77         outb(ld, base + 1);
  78 }
  79
  80 static inline void
  81 superio_enter(int base)
  82 {
  83         outb(0x87, base);
  84         outb(0x87, base);
  85 }
  86
  87 static inline void
  88 superio_exit(int base)
  89 {
  90         outb(0xaa, base);
  91 }
  92
  93 /*
  94  * ISA constants
  95  */
  96
  97 #define REGION_LENGTH           2
  98 #define ADDR_REG_OFFSET         0
  99 #define DATA_REG_OFFSET         1
 100
 101 static struct resource f71805f_resource __initdata = {
 102         .flags  = IORESOURCE_IO,
 103 };
 104
 105 /*
 106  * Registers
 107  */
 108
 109 /* in nr from 0 to 8 (8-bit values) */
 110 #define F71805F_REG_IN(nr)              (0x10 + (nr))
 111 #define F71805F_REG_IN_HIGH(nr)         (0x40 + 2 * (nr))
 112 #define F71805F_REG_IN_LOW(nr)          (0x41 + 2 * (nr))
 113 /* fan nr from 0 to 2 (12-bit values, two registers) */
 114 #define F71805F_REG_FAN(nr)             (0x20 + 2 * (nr))
 115 #define F71805F_REG_FAN_LOW(nr)         (0x28 + 2 * (nr))
 116 #define F71805F_REG_FAN_CTRL(nr)        (0x60 + 16 * (nr))
 117 /* temp nr from 0 to 2 (8-bit values) */
 118 #define F71805F_REG_TEMP(nr)            (0x1B + (nr))
 119 #define F71805F_REG_TEMP_HIGH(nr)       (0x54 + 2 * (nr))
 120 #define F71805F_REG_TEMP_HYST(nr)       (0x55 + 2 * (nr))
 121 #define F71805F_REG_TEMP_MODE           0x01
 122
 123 #define F71805F_REG_START               0x00
 124 /* status nr from 0 to 2 */
 125 #define F71805F_REG_STATUS(nr)          (0x36 + (nr))
 126
 127 /*
 128  * Data structures and manipulation thereof
 129  */
 130
 131 struct f71805f_data {
 132         unsigned short addr;
 133         const char *name;
 134         struct semaphore lock;
 135         struct class_device *class_dev;
 136
 137         struct semaphore update_lock;
 138         char valid;             /* !=0 if following fields are valid */
 139         unsigned long last_updated;     /* In jiffies */
 140         unsigned long last_limits;      /* In jiffies */
 141
 142         /* Register values */
 143         u8 in[9];
 144         u8 in_high[9];
 145         u8 in_low[9];
 146         u16 fan[3];
 147         u16 fan_low[3];
 148         u8 fan_enabled;         /* Read once at init time */
 149         u8 temp[3];
 150         u8 temp_high[3];
 151         u8 temp_hyst[3];
 152         u8 temp_mode;
 153         u8 alarms[3];
 154 };
 155
 156 static inline long in_from_reg(u8 reg)
 157 {
 158         return (reg * 8);
 159 }
 160
 161 /* The 2 least significant bits are not used */
 162 static inline u8 in_to_reg(long val)
 163 {
 164         if (val <= 0)
 165                 return 0;
 166         if (val >= 2016)
 167                 return 0xfc;
 168         return (((val + 16) / 32) << 2);
 169 }
 170
 171 /* in0 is downscaled by a factor 2 internally */
 172 static inline long in0_from_reg(u8 reg)
 173 {
 174         return (reg * 16);
 175 }
 176
 177 static inline u8 in0_to_reg(long val)
 178 {
 179         if (val <= 0)
 180                 return 0;
 181         if (val >= 4032)
 182                 return 0xfc;
 183         return (((val + 32) / 64) << 2);
 184 }
 185
 186 /* The 4 most significant bits are not used */
 187 static inline long fan_from_reg(u16 reg)
 188 {
 189         reg &= 0xfff;
 190         if (!reg || reg == 0xfff)
 191                 return 0;
 192         return (1500000 / reg);
 193 }
 194
 195 static inline u16 fan_to_reg(long rpm)
 196 {
 197         /* If the low limit is set below what the chip can measure,
 198            store the largest possible 12-bit value in the registers,
 199            so that no alarm will ever trigger. */
 200         if (rpm < 367)
 201                 return 0xfff;
 202         return (1500000 / rpm);
 203 }
 204
 205 static inline long temp_from_reg(u8 reg)
 206 {
 207         return (reg * 1000);
 208 }
 209
 210 static inline u8 temp_to_reg(long val)
 211 {
 212         if (val < 0)
 213                 val = 0;
 214         else if (val > 1000 * 0xff)
 215                 val = 0xff;
 216         return ((val + 500) / 1000);
 217 }
 218
 219 /*
 220  * Device I/O access
 221  */
 222
 223 static u8 f71805f_read8(struct f71805f_data *data, u8 reg)
 224 {
 225         u8 val;
 226
 227         down(&data->lock);
 228         outb(reg, data->addr + ADDR_REG_OFFSET);
 229         val = inb(data->addr + DATA_REG_OFFSET);
 230         up(&data->lock);
 231
 232         return val;
 233 }
 234
 235 static void f71805f_write8(struct f71805f_data *data, u8 reg, u8 val)
 236 {
 237         down(&data->lock);
 238         outb(reg, data->addr + ADDR_REG_OFFSET);
 239         outb(val, data->addr + DATA_REG_OFFSET);
 240         up(&data->lock);
 241 }
 242
 243 /* It is important to read the MSB first, because doing so latches the
 244    value of the LSB, so we are sure both bytes belong to the same value. */
 245 static u16 f71805f_read16(struct f71805f_data *data, u8 reg)
 246 {
 247         u16 val;
 248
 249         down(&data->lock);
 250         outb(reg, data->addr + ADDR_REG_OFFSET);
 251         val = inb(data->addr + DATA_REG_OFFSET) << 8;
 252         outb(++reg, data->addr + ADDR_REG_OFFSET);
 253         val |= inb(data->addr + DATA_REG_OFFSET);
 254         up(&data->lock);
 255
 256         return val;
 257 }
 258
 259 static void f71805f_write16(struct f71805f_data *data, u8 reg, u16 val)
 260 {
 261         down(&data->lock);
 262         outb(reg, data->addr + ADDR_REG_OFFSET);
 263         outb(val >> 8, data->addr + DATA_REG_OFFSET);
 264         outb(++reg, data->addr + ADDR_REG_OFFSET);
 265         outb(val & 0xff, data->addr + DATA_REG_OFFSET);
 266         up(&data->lock);
 267 }
 268
 269 static struct f71805f_data *f71805f_update_device(struct device *dev)
 270 {
 271         struct f71805f_data *data = dev_get_drvdata(dev);
 272         int nr;
 273
 274         down(&data->update_lock);
 275
 276         /* Limit registers cache is refreshed after 60 seconds */
 277         if (time_after(jiffies, data->last_updated + 60 * HZ)
 278          || !data->valid) {
 279                 for (nr = 0; nr < 9; nr++) {
 280                         data->in_high[nr] = f71805f_read8(data,
 281                                             F71805F_REG_IN_HIGH(nr));
 282                         data->in_low[nr] = f71805f_read8(data,
 283                                            F71805F_REG_IN_LOW(nr));
 284                 }
 285                 for (nr = 0; nr < 3; nr++) {
 286                         if (data->fan_enabled & (1 << nr))
 287                                 data->fan_low[nr] = f71805f_read16(data,
 288                                                     F71805F_REG_FAN_LOW(nr));
 289                 }
 290                 for (nr = 0; nr < 3; nr++) {
 291                         data->temp_high[nr] = f71805f_read8(data,
 292                                               F71805F_REG_TEMP_HIGH(nr));
 293                         data->temp_hyst[nr] = f71805f_read8(data,
 294                                               F71805F_REG_TEMP_HYST(nr));
 295                 }
 296                 data->temp_mode = f71805f_read8(data, F71805F_REG_TEMP_MODE);
 297
 298                 data->last_limits = jiffies;
 299         }
 300
 301         /* Measurement registers cache is refreshed after 1 second */
 302         if (time_after(jiffies, data->last_updated + HZ)
 303          || !data->valid) {
 304                 for (nr = 0; nr < 9; nr++) {
 305                         data->in[nr] = f71805f_read8(data,
 306                                        F71805F_REG_IN(nr));
 307                 }
 308                 for (nr = 0; nr < 3; nr++) {
 309                         if (data->fan_enabled & (1 << nr))
 310                                 data->fan[nr] = f71805f_read16(data,
 311                                                 F71805F_REG_FAN(nr));
 312                 }
 313                 for (nr = 0; nr < 3; nr++) {
 314                         data->temp[nr] = f71805f_read8(data,
 315                                          F71805F_REG_TEMP(nr));
 316                 }
 317                 for (nr = 0; nr < 3; nr++) {
 318                         data->alarms[nr] = f71805f_read8(data,
 319                                            F71805F_REG_STATUS(nr));
 320                 }
 321
 322                 data->last_updated = jiffies;
 323                 data->valid = 1;
 324         }
 325
 326         up(&data->update_lock);
 327
 328         return data;
 329 }
 330
 331 /*
 332  * Sysfs interface
 333  */
 334
 335 static ssize_t show_in0(struct device *dev, struct device_attribute *devattr,
 336                         char *buf)
 337 {
 338         struct f71805f_data *data = f71805f_update_device(dev);
 339
 340         return sprintf(buf, "%ld\n", in0_from_reg(data->in[0]));
 341 }
 342
 343 static ssize_t show_in0_max(struct device *dev, struct device_attribute
 344                             *devattr, char *buf)
 345 {
 346         struct f71805f_data *data = f71805f_update_device(dev);
 347
 348         return sprintf(buf, "%ld\n", in0_from_reg(data->in_high[0]));
 349 }
 350
 351 static ssize_t show_in0_min(struct device *dev, struct device_attribute
 352                             *devattr, char *buf)
 353 {
 354         struct f71805f_data *data = f71805f_update_device(dev);
 355
 356         return sprintf(buf, "%ld\n", in0_from_reg(data->in_low[0]));
 357 }
 358
 359 static ssize_t set_in0_max(struct device *dev, struct device_attribute
 360                            *devattr, const char *buf, size_t count)
 361 {
 362         struct f71805f_data *data = dev_get_drvdata(dev);
 363         long val = simple_strtol(buf, NULL, 10);
 364
 365         down(&data->update_lock);
 366         data->in_high[0] = in0_to_reg(val);
 367         f71805f_write8(data, F71805F_REG_IN_HIGH(0), data->in_high[0]);
 368         up(&data->update_lock);
 369
 370         return count;
 371 }
 372
 373 static ssize_t set_in0_min(struct device *dev, struct device_attribute
 374                            *devattr, const char *buf, size_t count)
 375 {
 376         struct f71805f_data *data = dev_get_drvdata(dev);
 377         long val = simple_strtol(buf, NULL, 10);
 378
 379         down(&data->update_lock);
 380         data->in_low[0] = in0_to_reg(val);
 381         f71805f_write8(data, F71805F_REG_IN_LOW(0), data->in_low[0]);
 382         up(&data->update_lock);
 383
 384         return count;
 385 }
 386
 387 static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
 388                        char *buf)
 389 {
 390         struct f71805f_data *data = f71805f_update_device(dev);
 391         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 392         int nr = attr->index;
 393
 394         return sprintf(buf, "%ld\n", in_from_reg(data->in[nr]));
 395 }
 396
 397 static ssize_t show_in_max(struct device *dev, struct device_attribute
 398                            *devattr, char *buf)
 399 {
 400         struct f71805f_data *data = f71805f_update_device(dev);
 401         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 402         int nr = attr->index;
 403
 404         return sprintf(buf, "%ld\n", in_from_reg(data->in_high[nr]));
 405 }
 406
 407 static ssize_t show_in_min(struct device *dev, struct device_attribute
 408                            *devattr, char *buf)
 409 {
 410         struct f71805f_data *data = f71805f_update_device(dev);
 411         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 412         int nr = attr->index;
 413
 414         return sprintf(buf, "%ld\n", in_from_reg(data->in_low[nr]));
 415 }
 416
 417 static ssize_t set_in_max(struct device *dev, struct device_attribute
 418                           *devattr, const char *buf, size_t count)
 419 {
 420         struct f71805f_data *data = dev_get_drvdata(dev);
 421         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 422         int nr = attr->index;
 423         long val = simple_strtol(buf, NULL, 10);
 424
 425         down(&data->update_lock);
 426         data->in_high[nr] = in_to_reg(val);
 427         f71805f_write8(data, F71805F_REG_IN_HIGH(nr), data->in_high[nr]);
 428         up(&data->update_lock);
 429
 430         return count;
 431 }
 432
 433 static ssize_t set_in_min(struct device *dev, struct device_attribute
 434                           *devattr, const char *buf, size_t count)
 435 {
 436         struct f71805f_data *data = dev_get_drvdata(dev);
 437         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 438         int nr = attr->index;
 439         long val = simple_strtol(buf, NULL, 10);
 440
 441         down(&data->update_lock);
 442         data->in_low[nr] = in_to_reg(val);
 443         f71805f_write8(data, F71805F_REG_IN_LOW(nr), data->in_low[nr]);
 444         up(&data->update_lock);
 445
 446         return count;
 447 }
 448
 449 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
 450                         char *buf)
 451 {
 452         struct f71805f_data *data = f71805f_update_device(dev);
 453         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 454         int nr = attr->index;
 455
 456         return sprintf(buf, "%ld\n", fan_from_reg(data->fan[nr]));
 457 }
 458
 459 static ssize_t show_fan_min(struct device *dev, struct device_attribute
 460                             *devattr, char *buf)
 461 {
 462         struct f71805f_data *data = f71805f_update_device(dev);
 463         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 464         int nr = attr->index;
 465
 466         return sprintf(buf, "%ld\n", fan_from_reg(data->fan_low[nr]));
 467 }
 468
 469 static ssize_t set_fan_min(struct device *dev, struct device_attribute
 470                            *devattr, const char *buf, size_t count)
 471 {
 472         struct f71805f_data *data = dev_get_drvdata(dev);
 473         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 474         int nr = attr->index;
 475         long val = simple_strtol(buf, NULL, 10);
 476
 477         down(&data->update_lock);
 478         data->fan_low[nr] = fan_to_reg(val);
 479         f71805f_write16(data, F71805F_REG_FAN_LOW(nr), data->fan_low[nr]);
 480         up(&data->update_lock);
 481
 482         return count;
 483 }
 484
 485 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
 486                          char *buf)
 487 {
 488         struct f71805f_data *data = f71805f_update_device(dev);
 489         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 490         int nr = attr->index;
 491
 492         return sprintf(buf, "%ld\n", temp_from_reg(data->temp[nr]));
 493 }
 494
 495 static ssize_t show_temp_max(struct device *dev, struct device_attribute
 496                              *devattr, char *buf)
 497 {
 498         struct f71805f_data *data = f71805f_update_device(dev);
 499         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 500         int nr = attr->index;
 501
 502         return sprintf(buf, "%ld\n", temp_from_reg(data->temp_high[nr]));
 503 }
 504
 505 static ssize_t show_temp_hyst(struct device *dev, struct device_attribute
 506                               *devattr, char *buf)
 507 {
 508         struct f71805f_data *data = f71805f_update_device(dev);
 509         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 510         int nr = attr->index;
 511
 512         return sprintf(buf, "%ld\n", temp_from_reg(data->temp_hyst[nr]));
 513 }
 514
 515 static ssize_t show_temp_type(struct device *dev, struct device_attribute
 516                               *devattr, char *buf)
 517 {
 518         struct f71805f_data *data = f71805f_update_device(dev);
 519         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 520         int nr = attr->index;
 521
 522         /* 3 is diode, 4 is thermistor */
 523         return sprintf(buf, "%u\n", (data->temp_mode & (1 << nr)) ? 3 : 4);
 524 }
 525
 526 static ssize_t set_temp_max(struct device *dev, struct device_attribute
 527                             *devattr, const char *buf, size_t count)
 528 {
 529         struct f71805f_data *data = dev_get_drvdata(dev);
 530         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 531         int nr = attr->index;
 532         long val = simple_strtol(buf, NULL, 10);
 533
 534         down(&data->update_lock);
 535         data->temp_high[nr] = temp_to_reg(val);
 536         f71805f_write8(data, F71805F_REG_TEMP_HIGH(nr), data->temp_high[nr]);
 537         up(&data->update_lock);
 538
 539         return count;
 540 }
 541
 542 static ssize_t set_temp_hyst(struct device *dev, struct device_attribute
 543                              *devattr, const char *buf, size_t count)
 544 {
 545         struct f71805f_data *data = dev_get_drvdata(dev);
 546         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 547         int nr = attr->index;
 548         long val = simple_strtol(buf, NULL, 10);
 549
 550         down(&data->update_lock);
 551         data->temp_hyst[nr] = temp_to_reg(val);
 552         f71805f_write8(data, F71805F_REG_TEMP_HYST(nr), data->temp_hyst[nr]);
 553         up(&data->update_lock);
 554
 555         return count;
 556 }
 557
 558 static ssize_t show_alarms_in(struct device *dev, struct device_attribute
 559                               *devattr, char *buf)
 560 {
 561         struct f71805f_data *data = f71805f_update_device(dev);
 562
 563         return sprintf(buf, "%d\n", data->alarms[0] |
 564                                     ((data->alarms[1] & 0x01) << 8));
 565 }
 566
 567 static ssize_t show_alarms_fan(struct device *dev, struct device_attribute
 568                                *devattr, char *buf)
 569 {
 570         struct f71805f_data *data = f71805f_update_device(dev);
 571
 572         return sprintf(buf, "%d\n", data->alarms[2] & 0x07);
 573 }
 574
 575 static ssize_t show_alarms_temp(struct device *dev, struct device_attribute
 576                                 *devattr, char *buf)
 577 {
 578         struct f71805f_data *data = f71805f_update_device(dev);
 579
 580         return sprintf(buf, "%d\n", (data->alarms[1] >> 3) & 0x07);
 581 }
 582
 583 static ssize_t show_name(struct device *dev, struct device_attribute
 584                          *devattr, char *buf)
 585 {
 586         struct f71805f_data *data = dev_get_drvdata(dev);
 587
 588         return sprintf(buf, "%s\n", data->name);
 589 }
 590
 591 static struct device_attribute f71805f_dev_attr[] = {
 592         __ATTR(in0_input, S_IRUGO, show_in0, NULL),
 593         __ATTR(in0_max, S_IRUGO| S_IWUSR, show_in0_max, set_in0_max),
 594         __ATTR(in0_min, S_IRUGO| S_IWUSR, show_in0_min, set_in0_min),
 595         __ATTR(alarms_in, S_IRUGO, show_alarms_in, NULL),
 596         __ATTR(alarms_fan, S_IRUGO, show_alarms_fan, NULL),
 597         __ATTR(alarms_temp, S_IRUGO, show_alarms_temp, NULL),
 598         __ATTR(name, S_IRUGO, show_name, NULL),
 599 };
 600
 601 static struct sensor_device_attribute f71805f_sensor_attr[] = {
 602         SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
 603         SENSOR_ATTR(in1_max, S_IRUGO | S_IWUSR,
 604                     show_in_max, set_in_max, 1),
 605         SENSOR_ATTR(in1_min, S_IRUGO | S_IWUSR,
 606                     show_in_min, set_in_min, 1),
 607         SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
 608         SENSOR_ATTR(in2_max, S_IRUGO | S_IWUSR,
 609                     show_in_max, set_in_max, 2),
 610         SENSOR_ATTR(in2_min, S_IRUGO | S_IWUSR,
 611                     show_in_min, set_in_min, 2),
 612         SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
 613         SENSOR_ATTR(in3_max, S_IRUGO | S_IWUSR,
 614                     show_in_max, set_in_max, 3),
 615         SENSOR_ATTR(in3_min, S_IRUGO | S_IWUSR,
 616                     show_in_min, set_in_min, 3),
 617         SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
 618         SENSOR_ATTR(in4_max, S_IRUGO | S_IWUSR,
 619                     show_in_max, set_in_max, 4),
 620         SENSOR_ATTR(in4_min, S_IRUGO | S_IWUSR,
 621                     show_in_min, set_in_min, 4),
 622         SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
 623         SENSOR_ATTR(in5_max, S_IRUGO | S_IWUSR,
 624                     show_in_max, set_in_max, 5),
 625         SENSOR_ATTR(in5_min, S_IRUGO | S_IWUSR,
 626                     show_in_min, set_in_min, 5),
 627         SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
 628         SENSOR_ATTR(in6_max, S_IRUGO | S_IWUSR,
 629                     show_in_max, set_in_max, 6),
 630         SENSOR_ATTR(in6_min, S_IRUGO | S_IWUSR,
 631                     show_in_min, set_in_min, 6),
 632         SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
 633         SENSOR_ATTR(in7_max, S_IRUGO | S_IWUSR,
 634                     show_in_max, set_in_max, 7),
 635         SENSOR_ATTR(in7_min, S_IRUGO | S_IWUSR,
 636                     show_in_min, set_in_min, 7),
 637         SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
 638         SENSOR_ATTR(in8_max, S_IRUGO | S_IWUSR,
 639                     show_in_max, set_in_max, 8),
 640         SENSOR_ATTR(in8_min, S_IRUGO | S_IWUSR,
 641                     show_in_min, set_in_min, 8),
 642
 643         SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
 644         SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
 645                     show_temp_max, set_temp_max, 0),
 646         SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
 647                     show_temp_hyst, set_temp_hyst, 0),
 648         SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
 649         SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
 650         SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
 651                     show_temp_max, set_temp_max, 1),
 652         SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
 653                     show_temp_hyst, set_temp_hyst, 1),
 654         SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
 655         SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
 656         SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
 657                     show_temp_max, set_temp_max, 2),
 658         SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR,
 659                     show_temp_hyst, set_temp_hyst, 2),
 660         SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
 661 };
 662
 663 static struct sensor_device_attribute f71805f_fan_attr[] = {
 664         SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
 665         SENSOR_ATTR(fan1_min, S_IRUGO | S_IWUSR,
 666                     show_fan_min, set_fan_min, 0),
 667         SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
 668         SENSOR_ATTR(fan2_min, S_IRUGO | S_IWUSR,
 669                     show_fan_min, set_fan_min, 1),
 670         SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
 671         SENSOR_ATTR(fan3_min, S_IRUGO | S_IWUSR,
 672                     show_fan_min, set_fan_min, 2),
 673 };
 674
 675 /*
 676  * Device registration and initialization
 677  */
 678
 679 static void __devinit f71805f_init_device(struct f71805f_data *data)
 680 {
 681         u8 reg;
 682         int i;
 683
 684         reg = f71805f_read8(data, F71805F_REG_START);
 685         if ((reg & 0x41) != 0x01) {
 686                 printk(KERN_DEBUG DRVNAME ": Starting monitoring "
 687                        "operations\n");
 688                 f71805f_write8(data, F71805F_REG_START, (reg | 0x01) & ~0x40);
 689         }
 690
 691         /* Fan monitoring can be disabled. If it is, we won't be polling
 692            the register values, and won't create the related sysfs files. */
 693         for (i = 0; i < 3; i++) {
 694                 reg = f71805f_read8(data, F71805F_REG_FAN_CTRL(i));
 695                 if (!(reg & 0x80))
 696                         data->fan_enabled |= (1 << i);
 697         }
 698 }
 699
 700 static int __devinit f71805f_probe(struct platform_device *pdev)
 701 {
 702         struct f71805f_data *data;
 703         struct resource *res;
 704         int i, err;
 705
 706         if (!(data = kzalloc(sizeof(struct f71805f_data), GFP_KERNEL))) {
 707                 err = -ENOMEM;
 708                 printk(KERN_ERR DRVNAME ": Out of memory\n");
 709                 goto exit;
 710         }
 711
 712         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
 713         data->addr = res->start;
 714         init_MUTEX(&data->lock);
 715         data->name = "f71805f";
 716         init_MUTEX(&data->update_lock);
 717
 718         platform_set_drvdata(pdev, data);
 719
 720         data->class_dev = hwmon_device_register(&pdev->dev);
 721         if (IS_ERR(data->class_dev)) {
 722                 err = PTR_ERR(data->class_dev);
 723                 dev_err(&pdev->dev, "Class registration failed (%d)\n", err);
 724                 goto exit_free;
 725         }
 726
 727         /* Initialize the F71805F chip */
 728         f71805f_init_device(data);
 729
 730         /* Register sysfs interface files */
 731         for (i = 0; i < ARRAY_SIZE(f71805f_dev_attr); i++) {
 732                 err = device_create_file(&pdev->dev, &f71805f_dev_attr[i]);
 733                 if (err)
 734                         goto exit_class;
 735         }
 736         for (i = 0; i < ARRAY_SIZE(f71805f_sensor_attr); i++) {
 737                 err = device_create_file(&pdev->dev,
 738                                          &f71805f_sensor_attr[i].dev_attr);
 739                 if (err)
 740                         goto exit_class;
 741         }
 742         for (i = 0; i < ARRAY_SIZE(f71805f_fan_attr); i++) {
 743                 if (!(data->fan_enabled & (1 << (i / 2))))
 744                         continue;
 745                 err = device_create_file(&pdev->dev,
 746                                          &f71805f_fan_attr[i].dev_attr);
 747                 if (err)
 748                         goto exit_class;
 749         }
 750
 751         return 0;
 752
 753 exit_class:
 754         dev_err(&pdev->dev, "Sysfs interface creation failed\n");
 755         hwmon_device_unregister(data->class_dev);
 756 exit_free:
 757         kfree(data);
 758 exit:
 759         return err;
 760 }
 761
 762 static int __devexit f71805f_remove(struct platform_device *pdev)
 763 {
 764         struct f71805f_data *data = platform_get_drvdata(pdev);
 765
 766         platform_set_drvdata(pdev, NULL);
 767         hwmon_device_unregister(data->class_dev);
 768         kfree(data);
 769
 770         return 0;
 771 }
 772
 773 static struct platform_driver f71805f_driver = {
 774         .driver = {
 775                 .owner  = THIS_MODULE,
 776                 .name   = DRVNAME,
 777         },
 778         .probe          = f71805f_probe,
 779         .remove         = __devexit_p(f71805f_remove),
 780 };
 781
 782 static int __init f71805f_device_add(unsigned short address)
 783 {
 784         int err;
 785
 786         pdev = platform_device_alloc(DRVNAME, address);
 787         if (!pdev) {
 788                 err = -ENOMEM;
 789                 printk(KERN_ERR DRVNAME ": Device allocation failed\n");
 790                 goto exit;
 791         }
 792
 793         f71805f_resource.start = address;
 794         f71805f_resource.end = address + REGION_LENGTH - 1;
 795         f71805f_resource.name = pdev->name;
 796         err = platform_device_add_resources(pdev, &f71805f_resource, 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);