1 /* 2 * drivers/hwmon/applesmc.c - driver for Apple's SMC (accelerometer, temperature 3 * sensors, fan control, keyboard backlight control) used in Intel-based Apple 4 * computers. 5 * 6 * Copyright (C) 2007 Nicolas Boichat <nicolas@boichat.ch> 7 * 8 * Based on hdaps.c driver: 9 * Copyright (C) 2005 Robert Love <rml@novell.com> 10 * Copyright (C) 2005 Jesper Juhl <jesper.juhl@gmail.com> 11 * 12 * Fan control based on smcFanControl: 13 * Copyright (C) 2006 Hendrik Holtmann <holtmann@mac.com> 14 * 15 * This program is free software; you can redistribute it and/or modify it 16 * under the terms of the GNU General Public License v2 as published by the 17 * Free Software Foundation. 18 * 19 * This program is distributed in the hope that it will be useful, but WITHOUT 20 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 21 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 22 * more details. 23 * 24 * You should have received a copy of the GNU General Public License along with 25 * this program; if not, write to the Free Software Foundation, Inc., 26 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA 27 */ 28 29 #include <linux/delay.h> 30 #include <linux/platform_device.h> 31 #include <linux/input-polldev.h> 32 #include <linux/kernel.h> 33 #include <linux/module.h> 34 #include <linux/timer.h> 35 #include <linux/dmi.h> 36 #include <linux/mutex.h> 37 #include <linux/hwmon-sysfs.h> 38 #include <asm/io.h> 39 #include <linux/leds.h> 40 #include <linux/hwmon.h> 41 #include <linux/workqueue.h> 42 43 /* data port used by Apple SMC */ 44 #define APPLESMC_DATA_PORT 0x300 45 /* command/status port used by Apple SMC */ 46 #define APPLESMC_CMD_PORT 0x304 47 48 #define APPLESMC_NR_PORTS 32 /* 0x300-0x31f */ 49 50 #define APPLESMC_MAX_DATA_LENGTH 32 51 52 #define APPLESMC_STATUS_MASK 0x0f 53 #define APPLESMC_READ_CMD 0x10 54 #define APPLESMC_WRITE_CMD 0x11 55 #define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12 56 #define APPLESMC_GET_KEY_TYPE_CMD 0x13 57 58 #define KEY_COUNT_KEY "#KEY" /* r-o ui32 */ 59 60 #define LIGHT_SENSOR_LEFT_KEY "ALV0" /* r-o {alv (6 bytes) */ 61 #define LIGHT_SENSOR_RIGHT_KEY "ALV1" /* r-o {alv (6 bytes) */ 62 #define BACKLIGHT_KEY "LKSB" /* w-o {lkb (2 bytes) */ 63 64 #define CLAMSHELL_KEY "MSLD" /* r-o ui8 (unused) */ 65 66 #define MOTION_SENSOR_X_KEY "MO_X" /* r-o sp78 (2 bytes) */ 67 #define MOTION_SENSOR_Y_KEY "MO_Y" /* r-o sp78 (2 bytes) */ 68 #define MOTION_SENSOR_Z_KEY "MO_Z" /* r-o sp78 (2 bytes) */ 69 #define MOTION_SENSOR_KEY "MOCN" /* r/w ui16 */ 70 71 #define FANS_COUNT "FNum" /* r-o ui8 */ 72 #define FANS_MANUAL "FS! " /* r-w ui16 */ 73 #define FAN_ACTUAL_SPEED "F0Ac" /* r-o fpe2 (2 bytes) */ 74 #define FAN_MIN_SPEED "F0Mn" /* r-o fpe2 (2 bytes) */ 75 #define FAN_MAX_SPEED "F0Mx" /* r-o fpe2 (2 bytes) */ 76 #define FAN_SAFE_SPEED "F0Sf" /* r-o fpe2 (2 bytes) */ 77 #define FAN_TARGET_SPEED "F0Tg" /* r-w fpe2 (2 bytes) */ 78 #define FAN_POSITION "F0ID" /* r-o char[16] */ 79 80 /* 81 * Temperature sensors keys (sp78 - 2 bytes). 82 */ 83 static const char* temperature_sensors_sets[][13] = { 84 /* Set 0: Macbook Pro */ 85 { "TA0P", "TB0T", "TC0D", "TC0P", "TG0H", "TG0P", "TG0T", "Th0H", 86 "Th1H", "Tm0P", "Ts0P", "Ts1P", NULL }, 87 /* Set 1: Macbook set */ 88 { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TN1P", "Th0H", "Th0S", 89 "Th1H", "Ts0P", NULL }, 90 /* Set 2: Macmini set */ 91 { "TC0D", "TC0P", NULL } 92 }; 93 94 /* List of keys used to read/write fan speeds */ 95 static const char* fan_speed_keys[] = { 96 FAN_ACTUAL_SPEED, 97 FAN_MIN_SPEED, 98 FAN_MAX_SPEED, 99 FAN_SAFE_SPEED, 100 FAN_TARGET_SPEED 101 }; 102 103 #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */ 104 #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */ 105 106 #define APPLESMC_POLL_INTERVAL 50 /* msecs */ 107 #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */ 108 #define APPLESMC_INPUT_FLAT 4 109 110 #define SENSOR_X 0 111 #define SENSOR_Y 1 112 #define SENSOR_Z 2 113 114 /* Structure to be passed to DMI_MATCH function */ 115 struct dmi_match_data { 116 /* Indicates whether this computer has an accelerometer. */ 117 int accelerometer; 118 /* Indicates whether this computer has light sensors and keyboard backlight. */ 119 int light; 120 /* Indicates which temperature sensors set to use. */ 121 int temperature_set; 122 }; 123 124 static const int debug; 125 static struct platform_device *pdev; 126 static s16 rest_x; 127 static s16 rest_y; 128 static struct device *hwmon_dev; 129 static struct input_polled_dev *applesmc_idev; 130 131 /* Indicates whether this computer has an accelerometer. */ 132 static unsigned int applesmc_accelerometer; 133 134 /* Indicates whether this computer has light sensors and keyboard backlight. */ 135 static unsigned int applesmc_light; 136 137 /* Indicates which temperature sensors set to use. */ 138 static unsigned int applesmc_temperature_set; 139 140 static DEFINE_MUTEX(applesmc_lock); 141 142 /* 143 * Last index written to key_at_index sysfs file, and value to use for all other 144 * key_at_index_* sysfs files. 145 */ 146 static unsigned int key_at_index; 147 148 static struct workqueue_struct *applesmc_led_wq; 149 150 /* 151 * __wait_status - Wait up to 2ms for the status port to get a certain value 152 * (masked with 0x0f), returning zero if the value is obtained. Callers must 153 * hold applesmc_lock. 154 */ 155 static int __wait_status(u8 val) 156 { 157 unsigned int i; 158 159 val = val & APPLESMC_STATUS_MASK; 160 161 for (i = 0; i < 200; i++) { 162 if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) { 163 if (debug) 164 printk(KERN_DEBUG 165 "Waited %d us for status %x\n", 166 i*10, val); 167 return 0; 168 } 169 udelay(10); 170 } 171 172 printk(KERN_WARNING "applesmc: wait status failed: %x != %x\n", 173 val, inb(APPLESMC_CMD_PORT)); 174 175 return -EIO; 176 } 177 178 /* 179 * applesmc_read_key - reads len bytes from a given key, and put them in buffer. 180 * Returns zero on success or a negative error on failure. Callers must 181 * hold applesmc_lock. 182 */ 183 static int applesmc_read_key(const char* key, u8* buffer, u8 len) 184 { 185 int i; 186 187 if (len > APPLESMC_MAX_DATA_LENGTH) { 188 printk(KERN_ERR "applesmc_read_key: cannot read more than " 189 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH); 190 return -EINVAL; 191 } 192 193 outb(APPLESMC_READ_CMD, APPLESMC_CMD_PORT); 194 if (__wait_status(0x0c)) 195 return -EIO; 196 197 for (i = 0; i < 4; i++) { 198 outb(key[i], APPLESMC_DATA_PORT); 199 if (__wait_status(0x04)) 200 return -EIO; 201 } 202 if (debug) 203 printk(KERN_DEBUG "<%s", key); 204 205 outb(len, APPLESMC_DATA_PORT); 206 if (debug) 207 printk(KERN_DEBUG ">%x", len); 208 209 for (i = 0; i < len; i++) { 210 if (__wait_status(0x05)) 211 return -EIO; 212 buffer[i] = inb(APPLESMC_DATA_PORT); 213 if (debug) 214 printk(KERN_DEBUG "<%x", buffer[i]); 215 } 216 if (debug) 217 printk(KERN_DEBUG "\n"); 218 219 return 0; 220 } 221 222 /* 223 * applesmc_write_key - writes len bytes from buffer to a given key. 224 * Returns zero on success or a negative error on failure. Callers must 225 * hold applesmc_lock. 226 */ 227 static int applesmc_write_key(const char* key, u8* buffer, u8 len) 228 { 229 int i; 230 231 if (len > APPLESMC_MAX_DATA_LENGTH) { 232 printk(KERN_ERR "applesmc_write_key: cannot write more than " 233 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH); 234 return -EINVAL; 235 } 236 237 outb(APPLESMC_WRITE_CMD, APPLESMC_CMD_PORT); 238 if (__wait_status(0x0c)) 239 return -EIO; 240 241 for (i = 0; i < 4; i++) { 242 outb(key[i], APPLESMC_DATA_PORT); 243 if (__wait_status(0x04)) 244 return -EIO; 245 } 246 247 outb(len, APPLESMC_DATA_PORT); 248 249 for (i = 0; i < len; i++) { 250 if (__wait_status(0x04)) 251 return -EIO; 252 outb(buffer[i], APPLESMC_DATA_PORT); 253 } 254 255 return 0; 256 } 257 258 /* 259 * applesmc_get_key_at_index - get key at index, and put the result in key 260 * (char[6]). Returns zero on success or a negative error on failure. Callers 261 * must hold applesmc_lock. 262 */ 263 static int applesmc_get_key_at_index(int index, char* key) 264 { 265 int i; 266 u8 readkey[4]; 267 readkey[0] = index >> 24; 268 readkey[1] = index >> 16; 269 readkey[2] = index >> 8; 270 readkey[3] = index; 271 272 outb(APPLESMC_GET_KEY_BY_INDEX_CMD, APPLESMC_CMD_PORT); 273 if (__wait_status(0x0c)) 274 return -EIO; 275 276 for (i = 0; i < 4; i++) { 277 outb(readkey[i], APPLESMC_DATA_PORT); 278 if (__wait_status(0x04)) 279 return -EIO; 280 } 281 282 outb(4, APPLESMC_DATA_PORT); 283 284 for (i = 0; i < 4; i++) { 285 if (__wait_status(0x05)) 286 return -EIO; 287 key[i] = inb(APPLESMC_DATA_PORT); 288 } 289 key[4] = 0; 290 291 return 0; 292 } 293 294 /* 295 * applesmc_get_key_type - get key type, and put the result in type (char[6]). 296 * Returns zero on success or a negative error on failure. Callers must 297 * hold applesmc_lock. 298 */ 299 static int applesmc_get_key_type(char* key, char* type) 300 { 301 int i; 302 303 outb(APPLESMC_GET_KEY_TYPE_CMD, APPLESMC_CMD_PORT); 304 if (__wait_status(0x0c)) 305 return -EIO; 306 307 for (i = 0; i < 4; i++) { 308 outb(key[i], APPLESMC_DATA_PORT); 309 if (__wait_status(0x04)) 310 return -EIO; 311 } 312 313 outb(5, APPLESMC_DATA_PORT); 314 315 for (i = 0; i < 6; i++) { 316 if (__wait_status(0x05)) 317 return -EIO; 318 type[i] = inb(APPLESMC_DATA_PORT); 319 } 320 type[5] = 0; 321 322 return 0; 323 } 324 325 /* 326 * applesmc_read_motion_sensor - Read motion sensor (X, Y or Z). Callers must 327 * hold applesmc_lock. 328 */ 329 static int applesmc_read_motion_sensor(int index, s16* value) 330 { 331 u8 buffer[2]; 332 int ret; 333 334 switch (index) { 335 case SENSOR_X: 336 ret = applesmc_read_key(MOTION_SENSOR_X_KEY, buffer, 2); 337 break; 338 case SENSOR_Y: 339 ret = applesmc_read_key(MOTION_SENSOR_Y_KEY, buffer, 2); 340 break; 341 case SENSOR_Z: 342 ret = applesmc_read_key(MOTION_SENSOR_Z_KEY, buffer, 2); 343 break; 344 default: 345 ret = -EINVAL; 346 } 347 348 *value = ((s16)buffer[0] << 8) | buffer[1]; 349 350 return ret; 351 } 352 353 /* 354 * applesmc_device_init - initialize the accelerometer. Returns zero on success 355 * and negative error code on failure. Can sleep. 356 */ 357 static int applesmc_device_init(void) 358 { 359 int total, ret = -ENXIO; 360 u8 buffer[2]; 361 362 if (!applesmc_accelerometer) 363 return 0; 364 365 mutex_lock(&applesmc_lock); 366 367 for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { 368 if (debug) 369 printk(KERN_DEBUG "applesmc try %d\n", total); 370 if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) && 371 (buffer[0] != 0x00 || buffer[1] != 0x00)) { 372 if (total == INIT_TIMEOUT_MSECS) { 373 printk(KERN_DEBUG "applesmc: device has" 374 " already been initialized" 375 " (0x%02x, 0x%02x).\n", 376 buffer[0], buffer[1]); 377 } else { 378 printk(KERN_DEBUG "applesmc: device" 379 " successfully initialized" 380 " (0x%02x, 0x%02x).\n", 381 buffer[0], buffer[1]); 382 } 383 ret = 0; 384 goto out; 385 } 386 buffer[0] = 0xe0; 387 buffer[1] = 0x00; 388 applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2); 389 msleep(INIT_WAIT_MSECS); 390 } 391 392 printk(KERN_WARNING "applesmc: failed to init the device\n"); 393 394 out: 395 mutex_unlock(&applesmc_lock); 396 return ret; 397 } 398 399 /* 400 * applesmc_get_fan_count - get the number of fans. Callers must NOT hold 401 * applesmc_lock. 402 */ 403 static int applesmc_get_fan_count(void) 404 { 405 int ret; 406 u8 buffer[1]; 407 408 mutex_lock(&applesmc_lock); 409 410 ret = applesmc_read_key(FANS_COUNT, buffer, 1); 411 412 mutex_unlock(&applesmc_lock); 413 if (ret) 414 return ret; 415 else 416 return buffer[0]; 417 } 418 419 /* Device model stuff */ 420 static int applesmc_probe(struct platform_device *dev) 421 { 422 int ret; 423 424 ret = applesmc_device_init(); 425 if (ret) 426 return ret; 427 428 printk(KERN_INFO "applesmc: device successfully initialized.\n"); 429 return 0; 430 } 431 432 static int applesmc_resume(struct platform_device *dev) 433 { 434 return applesmc_device_init(); 435 } 436 437 static struct platform_driver applesmc_driver = { 438 .probe = applesmc_probe, 439 .resume = applesmc_resume, 440 .driver = { 441 .name = "applesmc", 442 .owner = THIS_MODULE, 443 }, 444 }; 445 446 /* 447 * applesmc_calibrate - Set our "resting" values. Callers must 448 * hold applesmc_lock. 449 */ 450 static void applesmc_calibrate(void) 451 { 452 applesmc_read_motion_sensor(SENSOR_X, &rest_x); 453 applesmc_read_motion_sensor(SENSOR_Y, &rest_y); 454 rest_x = -rest_x; 455 } 456 457 static void applesmc_idev_poll(struct input_polled_dev *dev) 458 { 459 struct input_dev *idev = dev->input; 460 s16 x, y; 461 462 mutex_lock(&applesmc_lock); 463 464 if (applesmc_read_motion_sensor(SENSOR_X, &x)) 465 goto out; 466 if (applesmc_read_motion_sensor(SENSOR_Y, &y)) 467 goto out; 468 469 x = -x; 470 input_report_abs(idev, ABS_X, x - rest_x); 471 input_report_abs(idev, ABS_Y, y - rest_y); 472 input_sync(idev); 473 474 out: 475 mutex_unlock(&applesmc_lock); 476 } 477 478 /* Sysfs Files */ 479 480 static ssize_t applesmc_name_show(struct device *dev, 481 struct device_attribute *attr, char *buf) 482 { 483 return snprintf(buf, PAGE_SIZE, "applesmc\n"); 484 } 485 486 static ssize_t applesmc_position_show(struct device *dev, 487 struct device_attribute *attr, char *buf) 488 { 489 int ret; 490 s16 x, y, z; 491 492 mutex_lock(&applesmc_lock); 493 494 ret = applesmc_read_motion_sensor(SENSOR_X, &x); 495 if (ret) 496 goto out; 497 ret = applesmc_read_motion_sensor(SENSOR_Y, &y); 498 if (ret) 499 goto out; 500 ret = applesmc_read_motion_sensor(SENSOR_Z, &z); 501 if (ret) 502 goto out; 503 504 out: 505 mutex_unlock(&applesmc_lock); 506 if (ret) 507 return ret; 508 else 509 return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z); 510 } 511 512 static ssize_t applesmc_light_show(struct device *dev, 513 struct device_attribute *attr, char *sysfsbuf) 514 { 515 int ret; 516 u8 left = 0, right = 0; 517 u8 buffer[6]; 518 519 mutex_lock(&applesmc_lock); 520 521 ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, 6); 522 left = buffer[2]; 523 if (ret) 524 goto out; 525 ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, 6); 526 right = buffer[2]; 527 528 out: 529 mutex_unlock(&applesmc_lock); 530 if (ret) 531 return ret; 532 else 533 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right); 534 } 535 536 /* Displays degree Celsius * 1000 */ 537 static ssize_t applesmc_show_temperature(struct device *dev, 538 struct device_attribute *devattr, char *sysfsbuf) 539 { 540 int ret; 541 u8 buffer[2]; 542 unsigned int temp; 543 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 544 const char* key = 545 temperature_sensors_sets[applesmc_temperature_set][attr->index]; 546 547 mutex_lock(&applesmc_lock); 548 549 ret = applesmc_read_key(key, buffer, 2); 550 temp = buffer[0]*1000; 551 temp += (buffer[1] >> 6) * 250; 552 553 mutex_unlock(&applesmc_lock); 554 555 if (ret) 556 return ret; 557 else 558 return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp); 559 } 560 561 static ssize_t applesmc_show_fan_speed(struct device *dev, 562 struct device_attribute *attr, char *sysfsbuf) 563 { 564 int ret; 565 unsigned int speed = 0; 566 char newkey[5]; 567 u8 buffer[2]; 568 struct sensor_device_attribute_2 *sensor_attr = 569 to_sensor_dev_attr_2(attr); 570 571 newkey[0] = fan_speed_keys[sensor_attr->nr][0]; 572 newkey[1] = '0' + sensor_attr->index; 573 newkey[2] = fan_speed_keys[sensor_attr->nr][2]; 574 newkey[3] = fan_speed_keys[sensor_attr->nr][3]; 575 newkey[4] = 0; 576 577 mutex_lock(&applesmc_lock); 578 579 ret = applesmc_read_key(newkey, buffer, 2); 580 speed = ((buffer[0] << 8 | buffer[1]) >> 2); 581 582 mutex_unlock(&applesmc_lock); 583 if (ret) 584 return ret; 585 else 586 return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed); 587 } 588 589 static ssize_t applesmc_store_fan_speed(struct device *dev, 590 struct device_attribute *attr, 591 const char *sysfsbuf, size_t count) 592 { 593 int ret; 594 u32 speed; 595 char newkey[5]; 596 u8 buffer[2]; 597 struct sensor_device_attribute_2 *sensor_attr = 598 to_sensor_dev_attr_2(attr); 599 600 speed = simple_strtoul(sysfsbuf, NULL, 10); 601 602 if (speed > 0x4000) /* Bigger than a 14-bit value */ 603 return -EINVAL; 604 605 newkey[0] = fan_speed_keys[sensor_attr->nr][0]; 606 newkey[1] = '0' + sensor_attr->index; 607 newkey[2] = fan_speed_keys[sensor_attr->nr][2]; 608 newkey[3] = fan_speed_keys[sensor_attr->nr][3]; 609 newkey[4] = 0; 610 611 mutex_lock(&applesmc_lock); 612 613 buffer[0] = (speed >> 6) & 0xff; 614 buffer[1] = (speed << 2) & 0xff; 615 ret = applesmc_write_key(newkey, buffer, 2); 616 617 mutex_unlock(&applesmc_lock); 618 if (ret) 619 return ret; 620 else 621 return count; 622 } 623 624 static ssize_t applesmc_show_fan_manual(struct device *dev, 625 struct device_attribute *devattr, char *sysfsbuf) 626 { 627 int ret; 628 u16 manual = 0; 629 u8 buffer[2]; 630 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 631 632 mutex_lock(&applesmc_lock); 633 634 ret = applesmc_read_key(FANS_MANUAL, buffer, 2); 635 manual = ((buffer[0] << 8 | buffer[1]) >> attr->index) & 0x01; 636 637 mutex_unlock(&applesmc_lock); 638 if (ret) 639 return ret; 640 else 641 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual); 642 } 643 644 static ssize_t applesmc_store_fan_manual(struct device *dev, 645 struct device_attribute *devattr, 646 const char *sysfsbuf, size_t count) 647 { 648 int ret; 649 u8 buffer[2]; 650 u32 input; 651 u16 val; 652 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 653 654 input = simple_strtoul(sysfsbuf, NULL, 10); 655 656 mutex_lock(&applesmc_lock); 657 658 ret = applesmc_read_key(FANS_MANUAL, buffer, 2); 659 val = (buffer[0] << 8 | buffer[1]); 660 if (ret) 661 goto out; 662 663 if (input) 664 val = val | (0x01 << attr->index); 665 else 666 val = val & ~(0x01 << attr->index); 667 668 buffer[0] = (val >> 8) & 0xFF; 669 buffer[1] = val & 0xFF; 670 671 ret = applesmc_write_key(FANS_MANUAL, buffer, 2); 672 673 out: 674 mutex_unlock(&applesmc_lock); 675 if (ret) 676 return ret; 677 else 678 return count; 679 } 680 681 static ssize_t applesmc_show_fan_position(struct device *dev, 682 struct device_attribute *attr, char *sysfsbuf) 683 { 684 int ret; 685 char newkey[5]; 686 u8 buffer[17]; 687 struct sensor_device_attribute_2 *sensor_attr = 688 to_sensor_dev_attr_2(attr); 689 690 newkey[0] = FAN_POSITION[0]; 691 newkey[1] = '0' + sensor_attr->index; 692 newkey[2] = FAN_POSITION[2]; 693 newkey[3] = FAN_POSITION[3]; 694 newkey[4] = 0; 695 696 mutex_lock(&applesmc_lock); 697 698 ret = applesmc_read_key(newkey, buffer, 16); 699 buffer[16] = 0; 700 701 mutex_unlock(&applesmc_lock); 702 if (ret) 703 return ret; 704 else 705 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4); 706 } 707 708 static ssize_t applesmc_calibrate_show(struct device *dev, 709 struct device_attribute *attr, char *sysfsbuf) 710 { 711 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y); 712 } 713 714 static ssize_t applesmc_calibrate_store(struct device *dev, 715 struct device_attribute *attr, const char *sysfsbuf, size_t count) 716 { 717 mutex_lock(&applesmc_lock); 718 applesmc_calibrate(); 719 mutex_unlock(&applesmc_lock); 720 721 return count; 722 } 723 724 /* Store the next backlight value to be written by the work */ 725 static unsigned int backlight_value; 726 727 static void applesmc_backlight_set(struct work_struct *work) 728 { 729 u8 buffer[2]; 730 731 mutex_lock(&applesmc_lock); 732 buffer[0] = backlight_value; 733 buffer[1] = 0x00; 734 applesmc_write_key(BACKLIGHT_KEY, buffer, 2); 735 mutex_unlock(&applesmc_lock); 736 } 737 static DECLARE_WORK(backlight_work, &applesmc_backlight_set); 738 739 static void applesmc_brightness_set(struct led_classdev *led_cdev, 740 enum led_brightness value) 741 { 742 int ret; 743 744 backlight_value = value; 745 ret = queue_work(applesmc_led_wq, &backlight_work); 746 747 if (debug && (!ret)) 748 printk(KERN_DEBUG "applesmc: work was already on the queue.\n"); 749 } 750 751 static ssize_t applesmc_key_count_show(struct device *dev, 752 struct device_attribute *attr, char *sysfsbuf) 753 { 754 int ret; 755 u8 buffer[4]; 756 u32 count; 757 758 mutex_lock(&applesmc_lock); 759 760 ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4); 761 count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) + 762 ((u32)buffer[2]<<8) + buffer[3]; 763 764 mutex_unlock(&applesmc_lock); 765 if (ret) 766 return ret; 767 else 768 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count); 769 } 770 771 static ssize_t applesmc_key_at_index_read_show(struct device *dev, 772 struct device_attribute *attr, char *sysfsbuf) 773 { 774 char key[5]; 775 char info[6]; 776 int ret; 777 778 mutex_lock(&applesmc_lock); 779 780 ret = applesmc_get_key_at_index(key_at_index, key); 781 782 if (ret || !key[0]) { 783 mutex_unlock(&applesmc_lock); 784 785 return -EINVAL; 786 } 787 788 ret = applesmc_get_key_type(key, info); 789 790 if (ret) { 791 mutex_unlock(&applesmc_lock); 792 793 return ret; 794 } 795 796 /* 797 * info[0] maximum value (APPLESMC_MAX_DATA_LENGTH) is much lower than 798 * PAGE_SIZE, so we don't need any checks before writing to sysfsbuf. 799 */ 800 ret = applesmc_read_key(key, sysfsbuf, info[0]); 801 802 mutex_unlock(&applesmc_lock); 803 804 if (!ret) { 805 return info[0]; 806 } else { 807 return ret; 808 } 809 } 810 811 static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, 812 struct device_attribute *attr, char *sysfsbuf) 813 { 814 char key[5]; 815 char info[6]; 816 int ret; 817 818 mutex_lock(&applesmc_lock); 819 820 ret = applesmc_get_key_at_index(key_at_index, key); 821 822 if (ret || !key[0]) { 823 mutex_unlock(&applesmc_lock); 824 825 return -EINVAL; 826 } 827 828 ret = applesmc_get_key_type(key, info); 829 830 mutex_unlock(&applesmc_lock); 831 832 if (!ret) 833 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", info[0]); 834 else 835 return ret; 836 } 837 838 static ssize_t applesmc_key_at_index_type_show(struct device *dev, 839 struct device_attribute *attr, char *sysfsbuf) 840 { 841 char key[5]; 842 char info[6]; 843 int ret; 844 845 mutex_lock(&applesmc_lock); 846 847 ret = applesmc_get_key_at_index(key_at_index, key); 848 849 if (ret || !key[0]) { 850 mutex_unlock(&applesmc_lock); 851 852 return -EINVAL; 853 } 854 855 ret = applesmc_get_key_type(key, info); 856 857 mutex_unlock(&applesmc_lock); 858 859 if (!ret) 860 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", info+1); 861 else 862 return ret; 863 } 864 865 static ssize_t applesmc_key_at_index_name_show(struct device *dev, 866 struct device_attribute *attr, char *sysfsbuf) 867 { 868 char key[5]; 869 int ret; 870 871 mutex_lock(&applesmc_lock); 872 873 ret = applesmc_get_key_at_index(key_at_index, key); 874 875 mutex_unlock(&applesmc_lock); 876 877 if (!ret && key[0]) 878 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key); 879 else 880 return -EINVAL; 881 } 882 883 static ssize_t applesmc_key_at_index_show(struct device *dev, 884 struct device_attribute *attr, char *sysfsbuf) 885 { 886 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index); 887 } 888 889 static ssize_t applesmc_key_at_index_store(struct device *dev, 890 struct device_attribute *attr, const char *sysfsbuf, size_t count) 891 { 892 mutex_lock(&applesmc_lock); 893 894 key_at_index = simple_strtoul(sysfsbuf, NULL, 10); 895 896 mutex_unlock(&applesmc_lock); 897 898 return count; 899 } 900 901 static struct led_classdev applesmc_backlight = { 902 .name = "smc:kbd_backlight", 903 .default_trigger = "nand-disk", 904 .brightness_set = applesmc_brightness_set, 905 }; 906 907 static DEVICE_ATTR(name, 0444, applesmc_name_show, NULL); 908 909 static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL); 910 static DEVICE_ATTR(calibrate, 0644, 911 applesmc_calibrate_show, applesmc_calibrate_store); 912 913 static struct attribute *accelerometer_attributes[] = { 914 &dev_attr_position.attr, 915 &dev_attr_calibrate.attr, 916 NULL 917 }; 918 919 static const struct attribute_group accelerometer_attributes_group = 920 { .attrs = accelerometer_attributes }; 921 922 static DEVICE_ATTR(light, 0444, applesmc_light_show, NULL); 923 924 static DEVICE_ATTR(key_count, 0444, applesmc_key_count_show, NULL); 925 static DEVICE_ATTR(key_at_index, 0644, 926 applesmc_key_at_index_show, applesmc_key_at_index_store); 927 static DEVICE_ATTR(key_at_index_name, 0444, 928 applesmc_key_at_index_name_show, NULL); 929 static DEVICE_ATTR(key_at_index_type, 0444, 930 applesmc_key_at_index_type_show, NULL); 931 static DEVICE_ATTR(key_at_index_data_length, 0444, 932 applesmc_key_at_index_data_length_show, NULL); 933 static DEVICE_ATTR(key_at_index_data, 0444, 934 applesmc_key_at_index_read_show, NULL); 935 936 static struct attribute *key_enumeration_attributes[] = { 937 &dev_attr_key_count.attr, 938 &dev_attr_key_at_index.attr, 939 &dev_attr_key_at_index_name.attr, 940 &dev_attr_key_at_index_type.attr, 941 &dev_attr_key_at_index_data_length.attr, 942 &dev_attr_key_at_index_data.attr, 943 NULL 944 }; 945 946 static const struct attribute_group key_enumeration_group = 947 { .attrs = key_enumeration_attributes }; 948 949 /* 950 * Macro defining SENSOR_DEVICE_ATTR for a fan sysfs entries. 951 * - show actual speed 952 * - show/store minimum speed 953 * - show maximum speed 954 * - show safe speed 955 * - show/store target speed 956 * - show/store manual mode 957 */ 958 #define sysfs_fan_speeds_offset(offset) \ 959 static SENSOR_DEVICE_ATTR_2(fan##offset##_input, S_IRUGO, \ 960 applesmc_show_fan_speed, NULL, 0, offset-1); \ 961 \ 962 static SENSOR_DEVICE_ATTR_2(fan##offset##_min, S_IRUGO | S_IWUSR, \ 963 applesmc_show_fan_speed, applesmc_store_fan_speed, 1, offset-1); \ 964 \ 965 static SENSOR_DEVICE_ATTR_2(fan##offset##_max, S_IRUGO, \ 966 applesmc_show_fan_speed, NULL, 2, offset-1); \ 967 \ 968 static SENSOR_DEVICE_ATTR_2(fan##offset##_safe, S_IRUGO, \ 969 applesmc_show_fan_speed, NULL, 3, offset-1); \ 970 \ 971 static SENSOR_DEVICE_ATTR_2(fan##offset##_output, S_IRUGO | S_IWUSR, \ 972 applesmc_show_fan_speed, applesmc_store_fan_speed, 4, offset-1); \ 973 \ 974 static SENSOR_DEVICE_ATTR(fan##offset##_manual, S_IRUGO | S_IWUSR, \ 975 applesmc_show_fan_manual, applesmc_store_fan_manual, offset-1); \ 976 \ 977 static SENSOR_DEVICE_ATTR(fan##offset##_label, S_IRUGO, \ 978 applesmc_show_fan_position, NULL, offset-1); \ 979 \ 980 static struct attribute *fan##offset##_attributes[] = { \ 981 &sensor_dev_attr_fan##offset##_input.dev_attr.attr, \ 982 &sensor_dev_attr_fan##offset##_min.dev_attr.attr, \ 983 &sensor_dev_attr_fan##offset##_max.dev_attr.attr, \ 984 &sensor_dev_attr_fan##offset##_safe.dev_attr.attr, \ 985 &sensor_dev_attr_fan##offset##_output.dev_attr.attr, \ 986 &sensor_dev_attr_fan##offset##_manual.dev_attr.attr, \ 987 &sensor_dev_attr_fan##offset##_label.dev_attr.attr, \ 988 NULL \ 989 }; 990 991 /* 992 * Create the needed functions for each fan using the macro defined above 993 * (2 fans are supported) 994 */ 995 sysfs_fan_speeds_offset(1); 996 sysfs_fan_speeds_offset(2); 997 998 static const struct attribute_group fan_attribute_groups[] = { 999 { .attrs = fan1_attributes }, 1000 { .attrs = fan2_attributes } 1001 }; 1002 1003 /* 1004 * Temperature sensors sysfs entries. 1005 */ 1006 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, 1007 applesmc_show_temperature, NULL, 0); 1008 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, 1009 applesmc_show_temperature, NULL, 1); 1010 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, 1011 applesmc_show_temperature, NULL, 2); 1012 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, 1013 applesmc_show_temperature, NULL, 3); 1014 static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, 1015 applesmc_show_temperature, NULL, 4); 1016 static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, 1017 applesmc_show_temperature, NULL, 5); 1018 static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, 1019 applesmc_show_temperature, NULL, 6); 1020 static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, 1021 applesmc_show_temperature, NULL, 7); 1022 static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, 1023 applesmc_show_temperature, NULL, 8); 1024 static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, 1025 applesmc_show_temperature, NULL, 9); 1026 static SENSOR_DEVICE_ATTR(temp11_input, S_IRUGO, 1027 applesmc_show_temperature, NULL, 10); 1028 static SENSOR_DEVICE_ATTR(temp12_input, S_IRUGO, 1029 applesmc_show_temperature, NULL, 11); 1030 1031 static struct attribute *temperature_attributes[] = { 1032 &sensor_dev_attr_temp1_input.dev_attr.attr, 1033 &sensor_dev_attr_temp2_input.dev_attr.attr, 1034 &sensor_dev_attr_temp3_input.dev_attr.attr, 1035 &sensor_dev_attr_temp4_input.dev_attr.attr, 1036 &sensor_dev_attr_temp5_input.dev_attr.attr, 1037 &sensor_dev_attr_temp6_input.dev_attr.attr, 1038 &sensor_dev_attr_temp7_input.dev_attr.attr, 1039 &sensor_dev_attr_temp8_input.dev_attr.attr, 1040 &sensor_dev_attr_temp9_input.dev_attr.attr, 1041 &sensor_dev_attr_temp10_input.dev_attr.attr, 1042 &sensor_dev_attr_temp11_input.dev_attr.attr, 1043 &sensor_dev_attr_temp12_input.dev_attr.attr, 1044 NULL 1045 }; 1046 1047 static const struct attribute_group temperature_attributes_group = 1048 { .attrs = temperature_attributes }; 1049 1050 /* Module stuff */ 1051 1052 /* 1053 * applesmc_dmi_match - found a match. return one, short-circuiting the hunt. 1054 */ 1055 static int applesmc_dmi_match(const struct dmi_system_id *id) 1056 { 1057 int i = 0; 1058 struct dmi_match_data* dmi_data = id->driver_data; 1059 printk(KERN_INFO "applesmc: %s detected:\n", id->ident); 1060 applesmc_accelerometer = dmi_data->accelerometer; 1061 printk(KERN_INFO "applesmc: - Model %s accelerometer\n", 1062 applesmc_accelerometer ? "with" : "without"); 1063 applesmc_light = dmi_data->light; 1064 printk(KERN_INFO "applesmc: - Model %s light sensors and backlight\n", 1065 applesmc_light ? "with" : "without"); 1066 1067 applesmc_temperature_set = dmi_data->temperature_set; 1068 while (temperature_sensors_sets[applesmc_temperature_set][i] != NULL) 1069 i++; 1070 printk(KERN_INFO "applesmc: - Model with %d temperature sensors\n", i); 1071 return 1; 1072 } 1073 1074 /* Create accelerometer ressources */ 1075 static int applesmc_create_accelerometer(void) 1076 { 1077 struct input_dev *idev; 1078 int ret; 1079 1080 ret = sysfs_create_group(&pdev->dev.kobj, 1081 &accelerometer_attributes_group); 1082 if (ret) 1083 goto out; 1084 1085 applesmc_idev = input_allocate_polled_device(); 1086 if (!applesmc_idev) { 1087 ret = -ENOMEM; 1088 goto out_sysfs; 1089 } 1090 1091 applesmc_idev->poll = applesmc_idev_poll; 1092 applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL; 1093 1094 /* initial calibrate for the input device */ 1095 applesmc_calibrate(); 1096 1097 /* initialize the input device */ 1098 idev = applesmc_idev->input; 1099 idev->name = "applesmc"; 1100 idev->id.bustype = BUS_HOST; 1101 idev->dev.parent = &pdev->dev; 1102 idev->evbit[0] = BIT(EV_ABS); 1103 input_set_abs_params(idev, ABS_X, 1104 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); 1105 input_set_abs_params(idev, ABS_Y, 1106 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); 1107 1108 ret = input_register_polled_device(applesmc_idev); 1109 if (ret) 1110 goto out_idev; 1111 1112 return 0; 1113 1114 out_idev: 1115 input_free_polled_device(applesmc_idev); 1116 1117 out_sysfs: 1118 sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group); 1119 1120 out: 1121 printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret); 1122 return ret; 1123 } 1124 1125 /* Release all ressources used by the accelerometer */ 1126 static void applesmc_release_accelerometer(void) 1127 { 1128 input_unregister_polled_device(applesmc_idev); 1129 input_free_polled_device(applesmc_idev); 1130 sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group); 1131 } 1132 1133 static __initdata struct dmi_match_data applesmc_dmi_data[] = { 1134 /* MacBook Pro: accelerometer, backlight and temperature set 0 */ 1135 { .accelerometer = 1, .light = 1, .temperature_set = 0 }, 1136 /* MacBook: accelerometer and temperature set 1 */ 1137 { .accelerometer = 1, .light = 0, .temperature_set = 1 }, 1138 /* MacMini: temperature set 2 */ 1139 { .accelerometer = 0, .light = 0, .temperature_set = 2 }, 1140 }; 1141 1142 /* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1". 1143 * So we need to put "Apple MacBook Pro" before "Apple MacBook". */ 1144 static __initdata struct dmi_system_id applesmc_whitelist[] = { 1145 { applesmc_dmi_match, "Apple MacBook Pro", { 1146 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), 1147 DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro") }, 1148 (void*)&applesmc_dmi_data[0]}, 1149 { applesmc_dmi_match, "Apple MacBook", { 1150 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), 1151 DMI_MATCH(DMI_PRODUCT_NAME,"MacBook") }, 1152 (void*)&applesmc_dmi_data[1]}, 1153 { applesmc_dmi_match, "Apple Macmini", { 1154 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), 1155 DMI_MATCH(DMI_PRODUCT_NAME,"Macmini") }, 1156 (void*)&applesmc_dmi_data[2]}, 1157 { .ident = NULL } 1158 }; 1159 1160 static int __init applesmc_init(void) 1161 { 1162 int ret; 1163 int count; 1164 int i; 1165 1166 if (!dmi_check_system(applesmc_whitelist)) { 1167 printk(KERN_WARNING "applesmc: supported laptop not found!\n"); 1168 ret = -ENODEV; 1169 goto out; 1170 } 1171 1172 if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS, 1173 "applesmc")) { 1174 ret = -ENXIO; 1175 goto out; 1176 } 1177 1178 ret = platform_driver_register(&applesmc_driver); 1179 if (ret) 1180 goto out_region; 1181 1182 pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT, 1183 NULL, 0); 1184 if (IS_ERR(pdev)) { 1185 ret = PTR_ERR(pdev); 1186 goto out_driver; 1187 } 1188 1189 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_name.attr); 1190 if (ret) 1191 goto out_device; 1192 1193 /* Create key enumeration sysfs files */ 1194 ret = sysfs_create_group(&pdev->dev.kobj, &key_enumeration_group); 1195 if (ret) 1196 goto out_name; 1197 1198 /* create fan files */ 1199 count = applesmc_get_fan_count(); 1200 if (count < 0) { 1201 printk(KERN_ERR "applesmc: Cannot get the number of fans.\n"); 1202 } else { 1203 printk(KERN_INFO "applesmc: %d fans found.\n", count); 1204 1205 switch (count) { 1206 default: 1207 printk(KERN_WARNING "applesmc: More than 2 fans found," 1208 " but at most 2 fans are supported" 1209 " by the driver.\n"); 1210 case 2: 1211 ret = sysfs_create_group(&pdev->dev.kobj, 1212 &fan_attribute_groups[1]); 1213 if (ret) 1214 goto out_key_enumeration; 1215 case 1: 1216 ret = sysfs_create_group(&pdev->dev.kobj, 1217 &fan_attribute_groups[0]); 1218 if (ret) 1219 goto out_fan_1; 1220 case 0: 1221 ; 1222 } 1223 } 1224 1225 for (i = 0; 1226 temperature_sensors_sets[applesmc_temperature_set][i] != NULL; 1227 i++) { 1228 if (temperature_attributes[i] == NULL) { 1229 printk(KERN_ERR "applesmc: More temperature sensors " 1230 "in temperature_sensors_sets (at least %i)" 1231 "than available sysfs files in " 1232 "temperature_attributes (%i), please report " 1233 "this bug.\n", i, i-1); 1234 goto out_temperature; 1235 } 1236 ret = sysfs_create_file(&pdev->dev.kobj, 1237 temperature_attributes[i]); 1238 if (ret) 1239 goto out_temperature; 1240 } 1241 1242 if (applesmc_accelerometer) { 1243 ret = applesmc_create_accelerometer(); 1244 if (ret) 1245 goto out_temperature; 1246 } 1247 1248 if (applesmc_light) { 1249 /* Add light sensor file */ 1250 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_light.attr); 1251 if (ret) 1252 goto out_accelerometer; 1253 1254 /* Create the workqueue */ 1255 applesmc_led_wq = create_singlethread_workqueue("applesmc-led"); 1256 if (!applesmc_led_wq) { 1257 ret = -ENOMEM; 1258 goto out_light_sysfs; 1259 } 1260 1261 /* register as a led device */ 1262 ret = led_classdev_register(&pdev->dev, &applesmc_backlight); 1263 if (ret < 0) 1264 goto out_light_wq; 1265 } 1266 1267 hwmon_dev = hwmon_device_register(&pdev->dev); 1268 if (IS_ERR(hwmon_dev)) { 1269 ret = PTR_ERR(hwmon_dev); 1270 goto out_light_ledclass; 1271 } 1272 1273 printk(KERN_INFO "applesmc: driver successfully loaded.\n"); 1274 1275 return 0; 1276 1277 out_light_ledclass: 1278 if (applesmc_light) 1279 led_classdev_unregister(&applesmc_backlight); 1280 out_light_wq: 1281 if (applesmc_light) 1282 destroy_workqueue(applesmc_led_wq); 1283 out_light_sysfs: 1284 if (applesmc_light) 1285 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr); 1286 out_accelerometer: 1287 if (applesmc_accelerometer) 1288 applesmc_release_accelerometer(); 1289 out_temperature: 1290 sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group); 1291 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]); 1292 out_fan_1: 1293 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]); 1294 out_key_enumeration: 1295 sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group); 1296 out_name: 1297 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr); 1298 out_device: 1299 platform_device_unregister(pdev); 1300 out_driver: 1301 platform_driver_unregister(&applesmc_driver); 1302 out_region: 1303 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); 1304 out: 1305 printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret); 1306 return ret; 1307 } 1308 1309 static void __exit applesmc_exit(void) 1310 { 1311 hwmon_device_unregister(hwmon_dev); 1312 if (applesmc_light) { 1313 led_classdev_unregister(&applesmc_backlight); 1314 destroy_workqueue(applesmc_led_wq); 1315 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr); 1316 } 1317 if (applesmc_accelerometer) 1318 applesmc_release_accelerometer(); 1319 sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group); 1320 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]); 1321 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]); 1322 sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group); 1323 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr); 1324 platform_device_unregister(pdev); 1325 platform_driver_unregister(&applesmc_driver); 1326 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); 1327 1328 printk(KERN_INFO "applesmc: driver unloaded.\n"); 1329 } 1330 1331 module_init(applesmc_init); 1332 module_exit(applesmc_exit); 1333 1334 MODULE_AUTHOR("Nicolas Boichat"); 1335 MODULE_DESCRIPTION("Apple SMC"); 1336 MODULE_LICENSE("GPL v2"); 1337