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[][36] = { 84 /* Set 0: Macbook Pro */ 85 { "TA0P", "TB0T", "TC0D", "TC0P", "TG0H", "TG0P", "TG0T", "Th0H", 86 "Th1H", "Tm0P", "Ts0P", "Ts1P", NULL }, 87 /* Set 1: Macbook2 set */ 88 { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TN1P", "TTF0", "Th0H", 89 "Th0S", "Th1H", NULL }, 90 /* Set 2: Macbook set */ 91 { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TN1P", "Th0H", "Th0S", 92 "Th1H", "Ts0P", NULL }, 93 /* Set 3: Macmini set */ 94 { "TC0D", "TC0P", NULL }, 95 /* Set 4: Mac Pro (2 x Quad-Core) */ 96 { "TA0P", "TCAG", "TCAH", "TCBG", "TCBH", "TC0C", "TC0D", "TC0P", 97 "TC1C", "TC1D", "TC2C", "TC2D", "TC3C", "TC3D", "THTG", "TH0P", 98 "TH1P", "TH2P", "TH3P", "TMAP", "TMAS", "TMBS", "TM0P", "TM0S", 99 "TM1P", "TM1S", "TM2P", "TM2S", "TM3S", "TM8P", "TM8S", "TM9P", 100 "TM9S", "TN0H", "TS0C", NULL }, 101 /* Set 5: iMac */ 102 { "TC0D", "TA0P", "TG0P", "TG0D", "TG0H", "TH0P", "Tm0P", "TO0P", 103 "Tp0C", NULL }, 104 /* Set 6: Macbook3 set */ 105 { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TTF0", "TW0P", "Th0H", 106 "Th0S", "Th1H", NULL }, 107 }; 108 109 /* List of keys used to read/write fan speeds */ 110 static const char* fan_speed_keys[] = { 111 FAN_ACTUAL_SPEED, 112 FAN_MIN_SPEED, 113 FAN_MAX_SPEED, 114 FAN_SAFE_SPEED, 115 FAN_TARGET_SPEED 116 }; 117 118 #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */ 119 #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */ 120 121 #define APPLESMC_POLL_INTERVAL 50 /* msecs */ 122 #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */ 123 #define APPLESMC_INPUT_FLAT 4 124 125 #define SENSOR_X 0 126 #define SENSOR_Y 1 127 #define SENSOR_Z 2 128 129 /* Structure to be passed to DMI_MATCH function */ 130 struct dmi_match_data { 131 /* Indicates whether this computer has an accelerometer. */ 132 int accelerometer; 133 /* Indicates whether this computer has light sensors and keyboard backlight. */ 134 int light; 135 /* Indicates which temperature sensors set to use. */ 136 int temperature_set; 137 }; 138 139 static const int debug; 140 static struct platform_device *pdev; 141 static s16 rest_x; 142 static s16 rest_y; 143 static struct device *hwmon_dev; 144 static struct input_polled_dev *applesmc_idev; 145 146 /* Indicates whether this computer has an accelerometer. */ 147 static unsigned int applesmc_accelerometer; 148 149 /* Indicates whether this computer has light sensors and keyboard backlight. */ 150 static unsigned int applesmc_light; 151 152 /* Indicates which temperature sensors set to use. */ 153 static unsigned int applesmc_temperature_set; 154 155 static DEFINE_MUTEX(applesmc_lock); 156 157 /* 158 * Last index written to key_at_index sysfs file, and value to use for all other 159 * key_at_index_* sysfs files. 160 */ 161 static unsigned int key_at_index; 162 163 static struct workqueue_struct *applesmc_led_wq; 164 165 /* 166 * __wait_status - Wait up to 2ms for the status port to get a certain value 167 * (masked with 0x0f), returning zero if the value is obtained. Callers must 168 * hold applesmc_lock. 169 */ 170 static int __wait_status(u8 val) 171 { 172 unsigned int i; 173 174 val = val & APPLESMC_STATUS_MASK; 175 176 for (i = 0; i < 200; i++) { 177 if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) { 178 if (debug) 179 printk(KERN_DEBUG 180 "Waited %d us for status %x\n", 181 i*10, val); 182 return 0; 183 } 184 udelay(10); 185 } 186 187 printk(KERN_WARNING "applesmc: wait status failed: %x != %x\n", 188 val, inb(APPLESMC_CMD_PORT)); 189 190 return -EIO; 191 } 192 193 /* 194 * applesmc_read_key - reads len bytes from a given key, and put them in buffer. 195 * Returns zero on success or a negative error on failure. Callers must 196 * hold applesmc_lock. 197 */ 198 static int applesmc_read_key(const char* key, u8* buffer, u8 len) 199 { 200 int i; 201 202 if (len > APPLESMC_MAX_DATA_LENGTH) { 203 printk(KERN_ERR "applesmc_read_key: cannot read more than " 204 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH); 205 return -EINVAL; 206 } 207 208 outb(APPLESMC_READ_CMD, APPLESMC_CMD_PORT); 209 if (__wait_status(0x0c)) 210 return -EIO; 211 212 for (i = 0; i < 4; i++) { 213 outb(key[i], APPLESMC_DATA_PORT); 214 if (__wait_status(0x04)) 215 return -EIO; 216 } 217 if (debug) 218 printk(KERN_DEBUG "<%s", key); 219 220 outb(len, APPLESMC_DATA_PORT); 221 if (debug) 222 printk(KERN_DEBUG ">%x", len); 223 224 for (i = 0; i < len; i++) { 225 if (__wait_status(0x05)) 226 return -EIO; 227 buffer[i] = inb(APPLESMC_DATA_PORT); 228 if (debug) 229 printk(KERN_DEBUG "<%x", buffer[i]); 230 } 231 if (debug) 232 printk(KERN_DEBUG "\n"); 233 234 return 0; 235 } 236 237 /* 238 * applesmc_write_key - writes len bytes from buffer to a given key. 239 * Returns zero on success or a negative error on failure. Callers must 240 * hold applesmc_lock. 241 */ 242 static int applesmc_write_key(const char* key, u8* buffer, u8 len) 243 { 244 int i; 245 246 if (len > APPLESMC_MAX_DATA_LENGTH) { 247 printk(KERN_ERR "applesmc_write_key: cannot write more than " 248 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH); 249 return -EINVAL; 250 } 251 252 outb(APPLESMC_WRITE_CMD, APPLESMC_CMD_PORT); 253 if (__wait_status(0x0c)) 254 return -EIO; 255 256 for (i = 0; i < 4; i++) { 257 outb(key[i], APPLESMC_DATA_PORT); 258 if (__wait_status(0x04)) 259 return -EIO; 260 } 261 262 outb(len, APPLESMC_DATA_PORT); 263 264 for (i = 0; i < len; i++) { 265 if (__wait_status(0x04)) 266 return -EIO; 267 outb(buffer[i], APPLESMC_DATA_PORT); 268 } 269 270 return 0; 271 } 272 273 /* 274 * applesmc_get_key_at_index - get key at index, and put the result in key 275 * (char[6]). Returns zero on success or a negative error on failure. Callers 276 * must hold applesmc_lock. 277 */ 278 static int applesmc_get_key_at_index(int index, char* key) 279 { 280 int i; 281 u8 readkey[4]; 282 readkey[0] = index >> 24; 283 readkey[1] = index >> 16; 284 readkey[2] = index >> 8; 285 readkey[3] = index; 286 287 outb(APPLESMC_GET_KEY_BY_INDEX_CMD, APPLESMC_CMD_PORT); 288 if (__wait_status(0x0c)) 289 return -EIO; 290 291 for (i = 0; i < 4; i++) { 292 outb(readkey[i], APPLESMC_DATA_PORT); 293 if (__wait_status(0x04)) 294 return -EIO; 295 } 296 297 outb(4, APPLESMC_DATA_PORT); 298 299 for (i = 0; i < 4; i++) { 300 if (__wait_status(0x05)) 301 return -EIO; 302 key[i] = inb(APPLESMC_DATA_PORT); 303 } 304 key[4] = 0; 305 306 return 0; 307 } 308 309 /* 310 * applesmc_get_key_type - get key type, and put the result in type (char[6]). 311 * Returns zero on success or a negative error on failure. Callers must 312 * hold applesmc_lock. 313 */ 314 static int applesmc_get_key_type(char* key, char* type) 315 { 316 int i; 317 318 outb(APPLESMC_GET_KEY_TYPE_CMD, APPLESMC_CMD_PORT); 319 if (__wait_status(0x0c)) 320 return -EIO; 321 322 for (i = 0; i < 4; i++) { 323 outb(key[i], APPLESMC_DATA_PORT); 324 if (__wait_status(0x04)) 325 return -EIO; 326 } 327 328 outb(5, APPLESMC_DATA_PORT); 329 330 for (i = 0; i < 6; i++) { 331 if (__wait_status(0x05)) 332 return -EIO; 333 type[i] = inb(APPLESMC_DATA_PORT); 334 } 335 type[5] = 0; 336 337 return 0; 338 } 339 340 /* 341 * applesmc_read_motion_sensor - Read motion sensor (X, Y or Z). Callers must 342 * hold applesmc_lock. 343 */ 344 static int applesmc_read_motion_sensor(int index, s16* value) 345 { 346 u8 buffer[2]; 347 int ret; 348 349 switch (index) { 350 case SENSOR_X: 351 ret = applesmc_read_key(MOTION_SENSOR_X_KEY, buffer, 2); 352 break; 353 case SENSOR_Y: 354 ret = applesmc_read_key(MOTION_SENSOR_Y_KEY, buffer, 2); 355 break; 356 case SENSOR_Z: 357 ret = applesmc_read_key(MOTION_SENSOR_Z_KEY, buffer, 2); 358 break; 359 default: 360 ret = -EINVAL; 361 } 362 363 *value = ((s16)buffer[0] << 8) | buffer[1]; 364 365 return ret; 366 } 367 368 /* 369 * applesmc_device_init - initialize the accelerometer. Returns zero on success 370 * and negative error code on failure. Can sleep. 371 */ 372 static int applesmc_device_init(void) 373 { 374 int total, ret = -ENXIO; 375 u8 buffer[2]; 376 377 if (!applesmc_accelerometer) 378 return 0; 379 380 mutex_lock(&applesmc_lock); 381 382 for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { 383 if (debug) 384 printk(KERN_DEBUG "applesmc try %d\n", total); 385 if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) && 386 (buffer[0] != 0x00 || buffer[1] != 0x00)) { 387 if (total == INIT_TIMEOUT_MSECS) { 388 printk(KERN_DEBUG "applesmc: device has" 389 " already been initialized" 390 " (0x%02x, 0x%02x).\n", 391 buffer[0], buffer[1]); 392 } else { 393 printk(KERN_DEBUG "applesmc: device" 394 " successfully initialized" 395 " (0x%02x, 0x%02x).\n", 396 buffer[0], buffer[1]); 397 } 398 ret = 0; 399 goto out; 400 } 401 buffer[0] = 0xe0; 402 buffer[1] = 0x00; 403 applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2); 404 msleep(INIT_WAIT_MSECS); 405 } 406 407 printk(KERN_WARNING "applesmc: failed to init the device\n"); 408 409 out: 410 mutex_unlock(&applesmc_lock); 411 return ret; 412 } 413 414 /* 415 * applesmc_get_fan_count - get the number of fans. Callers must NOT hold 416 * applesmc_lock. 417 */ 418 static int applesmc_get_fan_count(void) 419 { 420 int ret; 421 u8 buffer[1]; 422 423 mutex_lock(&applesmc_lock); 424 425 ret = applesmc_read_key(FANS_COUNT, buffer, 1); 426 427 mutex_unlock(&applesmc_lock); 428 if (ret) 429 return ret; 430 else 431 return buffer[0]; 432 } 433 434 /* Device model stuff */ 435 static int applesmc_probe(struct platform_device *dev) 436 { 437 int ret; 438 439 ret = applesmc_device_init(); 440 if (ret) 441 return ret; 442 443 printk(KERN_INFO "applesmc: device successfully initialized.\n"); 444 return 0; 445 } 446 447 static int applesmc_resume(struct platform_device *dev) 448 { 449 return applesmc_device_init(); 450 } 451 452 static struct platform_driver applesmc_driver = { 453 .probe = applesmc_probe, 454 .resume = applesmc_resume, 455 .driver = { 456 .name = "applesmc", 457 .owner = THIS_MODULE, 458 }, 459 }; 460 461 /* 462 * applesmc_calibrate - Set our "resting" values. Callers must 463 * hold applesmc_lock. 464 */ 465 static void applesmc_calibrate(void) 466 { 467 applesmc_read_motion_sensor(SENSOR_X, &rest_x); 468 applesmc_read_motion_sensor(SENSOR_Y, &rest_y); 469 rest_x = -rest_x; 470 } 471 472 static void applesmc_idev_poll(struct input_polled_dev *dev) 473 { 474 struct input_dev *idev = dev->input; 475 s16 x, y; 476 477 mutex_lock(&applesmc_lock); 478 479 if (applesmc_read_motion_sensor(SENSOR_X, &x)) 480 goto out; 481 if (applesmc_read_motion_sensor(SENSOR_Y, &y)) 482 goto out; 483 484 x = -x; 485 input_report_abs(idev, ABS_X, x - rest_x); 486 input_report_abs(idev, ABS_Y, y - rest_y); 487 input_sync(idev); 488 489 out: 490 mutex_unlock(&applesmc_lock); 491 } 492 493 /* Sysfs Files */ 494 495 static ssize_t applesmc_name_show(struct device *dev, 496 struct device_attribute *attr, char *buf) 497 { 498 return snprintf(buf, PAGE_SIZE, "applesmc\n"); 499 } 500 501 static ssize_t applesmc_position_show(struct device *dev, 502 struct device_attribute *attr, char *buf) 503 { 504 int ret; 505 s16 x, y, z; 506 507 mutex_lock(&applesmc_lock); 508 509 ret = applesmc_read_motion_sensor(SENSOR_X, &x); 510 if (ret) 511 goto out; 512 ret = applesmc_read_motion_sensor(SENSOR_Y, &y); 513 if (ret) 514 goto out; 515 ret = applesmc_read_motion_sensor(SENSOR_Z, &z); 516 if (ret) 517 goto out; 518 519 out: 520 mutex_unlock(&applesmc_lock); 521 if (ret) 522 return ret; 523 else 524 return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z); 525 } 526 527 static ssize_t applesmc_light_show(struct device *dev, 528 struct device_attribute *attr, char *sysfsbuf) 529 { 530 int ret; 531 u8 left = 0, right = 0; 532 u8 buffer[6]; 533 534 mutex_lock(&applesmc_lock); 535 536 ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, 6); 537 left = buffer[2]; 538 if (ret) 539 goto out; 540 ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, 6); 541 right = buffer[2]; 542 543 out: 544 mutex_unlock(&applesmc_lock); 545 if (ret) 546 return ret; 547 else 548 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right); 549 } 550 551 /* Displays degree Celsius * 1000 */ 552 static ssize_t applesmc_show_temperature(struct device *dev, 553 struct device_attribute *devattr, char *sysfsbuf) 554 { 555 int ret; 556 u8 buffer[2]; 557 unsigned int temp; 558 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 559 const char* key = 560 temperature_sensors_sets[applesmc_temperature_set][attr->index]; 561 562 mutex_lock(&applesmc_lock); 563 564 ret = applesmc_read_key(key, buffer, 2); 565 temp = buffer[0]*1000; 566 temp += (buffer[1] >> 6) * 250; 567 568 mutex_unlock(&applesmc_lock); 569 570 if (ret) 571 return ret; 572 else 573 return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp); 574 } 575 576 static ssize_t applesmc_show_fan_speed(struct device *dev, 577 struct device_attribute *attr, char *sysfsbuf) 578 { 579 int ret; 580 unsigned int speed = 0; 581 char newkey[5]; 582 u8 buffer[2]; 583 struct sensor_device_attribute_2 *sensor_attr = 584 to_sensor_dev_attr_2(attr); 585 586 newkey[0] = fan_speed_keys[sensor_attr->nr][0]; 587 newkey[1] = '0' + sensor_attr->index; 588 newkey[2] = fan_speed_keys[sensor_attr->nr][2]; 589 newkey[3] = fan_speed_keys[sensor_attr->nr][3]; 590 newkey[4] = 0; 591 592 mutex_lock(&applesmc_lock); 593 594 ret = applesmc_read_key(newkey, buffer, 2); 595 speed = ((buffer[0] << 8 | buffer[1]) >> 2); 596 597 mutex_unlock(&applesmc_lock); 598 if (ret) 599 return ret; 600 else 601 return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed); 602 } 603 604 static ssize_t applesmc_store_fan_speed(struct device *dev, 605 struct device_attribute *attr, 606 const char *sysfsbuf, size_t count) 607 { 608 int ret; 609 u32 speed; 610 char newkey[5]; 611 u8 buffer[2]; 612 struct sensor_device_attribute_2 *sensor_attr = 613 to_sensor_dev_attr_2(attr); 614 615 speed = simple_strtoul(sysfsbuf, NULL, 10); 616 617 if (speed > 0x4000) /* Bigger than a 14-bit value */ 618 return -EINVAL; 619 620 newkey[0] = fan_speed_keys[sensor_attr->nr][0]; 621 newkey[1] = '0' + sensor_attr->index; 622 newkey[2] = fan_speed_keys[sensor_attr->nr][2]; 623 newkey[3] = fan_speed_keys[sensor_attr->nr][3]; 624 newkey[4] = 0; 625 626 mutex_lock(&applesmc_lock); 627 628 buffer[0] = (speed >> 6) & 0xff; 629 buffer[1] = (speed << 2) & 0xff; 630 ret = applesmc_write_key(newkey, buffer, 2); 631 632 mutex_unlock(&applesmc_lock); 633 if (ret) 634 return ret; 635 else 636 return count; 637 } 638 639 static ssize_t applesmc_show_fan_manual(struct device *dev, 640 struct device_attribute *devattr, char *sysfsbuf) 641 { 642 int ret; 643 u16 manual = 0; 644 u8 buffer[2]; 645 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 646 647 mutex_lock(&applesmc_lock); 648 649 ret = applesmc_read_key(FANS_MANUAL, buffer, 2); 650 manual = ((buffer[0] << 8 | buffer[1]) >> attr->index) & 0x01; 651 652 mutex_unlock(&applesmc_lock); 653 if (ret) 654 return ret; 655 else 656 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual); 657 } 658 659 static ssize_t applesmc_store_fan_manual(struct device *dev, 660 struct device_attribute *devattr, 661 const char *sysfsbuf, size_t count) 662 { 663 int ret; 664 u8 buffer[2]; 665 u32 input; 666 u16 val; 667 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 668 669 input = simple_strtoul(sysfsbuf, NULL, 10); 670 671 mutex_lock(&applesmc_lock); 672 673 ret = applesmc_read_key(FANS_MANUAL, buffer, 2); 674 val = (buffer[0] << 8 | buffer[1]); 675 if (ret) 676 goto out; 677 678 if (input) 679 val = val | (0x01 << attr->index); 680 else 681 val = val & ~(0x01 << attr->index); 682 683 buffer[0] = (val >> 8) & 0xFF; 684 buffer[1] = val & 0xFF; 685 686 ret = applesmc_write_key(FANS_MANUAL, buffer, 2); 687 688 out: 689 mutex_unlock(&applesmc_lock); 690 if (ret) 691 return ret; 692 else 693 return count; 694 } 695 696 static ssize_t applesmc_show_fan_position(struct device *dev, 697 struct device_attribute *attr, char *sysfsbuf) 698 { 699 int ret; 700 char newkey[5]; 701 u8 buffer[17]; 702 struct sensor_device_attribute_2 *sensor_attr = 703 to_sensor_dev_attr_2(attr); 704 705 newkey[0] = FAN_POSITION[0]; 706 newkey[1] = '0' + sensor_attr->index; 707 newkey[2] = FAN_POSITION[2]; 708 newkey[3] = FAN_POSITION[3]; 709 newkey[4] = 0; 710 711 mutex_lock(&applesmc_lock); 712 713 ret = applesmc_read_key(newkey, buffer, 16); 714 buffer[16] = 0; 715 716 mutex_unlock(&applesmc_lock); 717 if (ret) 718 return ret; 719 else 720 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4); 721 } 722 723 static ssize_t applesmc_calibrate_show(struct device *dev, 724 struct device_attribute *attr, char *sysfsbuf) 725 { 726 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y); 727 } 728 729 static ssize_t applesmc_calibrate_store(struct device *dev, 730 struct device_attribute *attr, const char *sysfsbuf, size_t count) 731 { 732 mutex_lock(&applesmc_lock); 733 applesmc_calibrate(); 734 mutex_unlock(&applesmc_lock); 735 736 return count; 737 } 738 739 /* Store the next backlight value to be written by the work */ 740 static unsigned int backlight_value; 741 742 static void applesmc_backlight_set(struct work_struct *work) 743 { 744 u8 buffer[2]; 745 746 mutex_lock(&applesmc_lock); 747 buffer[0] = backlight_value; 748 buffer[1] = 0x00; 749 applesmc_write_key(BACKLIGHT_KEY, buffer, 2); 750 mutex_unlock(&applesmc_lock); 751 } 752 static DECLARE_WORK(backlight_work, &applesmc_backlight_set); 753 754 static void applesmc_brightness_set(struct led_classdev *led_cdev, 755 enum led_brightness value) 756 { 757 int ret; 758 759 backlight_value = value; 760 ret = queue_work(applesmc_led_wq, &backlight_work); 761 762 if (debug && (!ret)) 763 printk(KERN_DEBUG "applesmc: work was already on the queue.\n"); 764 } 765 766 static ssize_t applesmc_key_count_show(struct device *dev, 767 struct device_attribute *attr, char *sysfsbuf) 768 { 769 int ret; 770 u8 buffer[4]; 771 u32 count; 772 773 mutex_lock(&applesmc_lock); 774 775 ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4); 776 count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) + 777 ((u32)buffer[2]<<8) + buffer[3]; 778 779 mutex_unlock(&applesmc_lock); 780 if (ret) 781 return ret; 782 else 783 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count); 784 } 785 786 static ssize_t applesmc_key_at_index_read_show(struct device *dev, 787 struct device_attribute *attr, char *sysfsbuf) 788 { 789 char key[5]; 790 char info[6]; 791 int ret; 792 793 mutex_lock(&applesmc_lock); 794 795 ret = applesmc_get_key_at_index(key_at_index, key); 796 797 if (ret || !key[0]) { 798 mutex_unlock(&applesmc_lock); 799 800 return -EINVAL; 801 } 802 803 ret = applesmc_get_key_type(key, info); 804 805 if (ret) { 806 mutex_unlock(&applesmc_lock); 807 808 return ret; 809 } 810 811 /* 812 * info[0] maximum value (APPLESMC_MAX_DATA_LENGTH) is much lower than 813 * PAGE_SIZE, so we don't need any checks before writing to sysfsbuf. 814 */ 815 ret = applesmc_read_key(key, sysfsbuf, info[0]); 816 817 mutex_unlock(&applesmc_lock); 818 819 if (!ret) { 820 return info[0]; 821 } else { 822 return ret; 823 } 824 } 825 826 static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, 827 struct device_attribute *attr, char *sysfsbuf) 828 { 829 char key[5]; 830 char info[6]; 831 int ret; 832 833 mutex_lock(&applesmc_lock); 834 835 ret = applesmc_get_key_at_index(key_at_index, key); 836 837 if (ret || !key[0]) { 838 mutex_unlock(&applesmc_lock); 839 840 return -EINVAL; 841 } 842 843 ret = applesmc_get_key_type(key, info); 844 845 mutex_unlock(&applesmc_lock); 846 847 if (!ret) 848 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", info[0]); 849 else 850 return ret; 851 } 852 853 static ssize_t applesmc_key_at_index_type_show(struct device *dev, 854 struct device_attribute *attr, char *sysfsbuf) 855 { 856 char key[5]; 857 char info[6]; 858 int ret; 859 860 mutex_lock(&applesmc_lock); 861 862 ret = applesmc_get_key_at_index(key_at_index, key); 863 864 if (ret || !key[0]) { 865 mutex_unlock(&applesmc_lock); 866 867 return -EINVAL; 868 } 869 870 ret = applesmc_get_key_type(key, info); 871 872 mutex_unlock(&applesmc_lock); 873 874 if (!ret) 875 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", info+1); 876 else 877 return ret; 878 } 879 880 static ssize_t applesmc_key_at_index_name_show(struct device *dev, 881 struct device_attribute *attr, char *sysfsbuf) 882 { 883 char key[5]; 884 int ret; 885 886 mutex_lock(&applesmc_lock); 887 888 ret = applesmc_get_key_at_index(key_at_index, key); 889 890 mutex_unlock(&applesmc_lock); 891 892 if (!ret && key[0]) 893 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key); 894 else 895 return -EINVAL; 896 } 897 898 static ssize_t applesmc_key_at_index_show(struct device *dev, 899 struct device_attribute *attr, char *sysfsbuf) 900 { 901 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index); 902 } 903 904 static ssize_t applesmc_key_at_index_store(struct device *dev, 905 struct device_attribute *attr, const char *sysfsbuf, size_t count) 906 { 907 mutex_lock(&applesmc_lock); 908 909 key_at_index = simple_strtoul(sysfsbuf, NULL, 10); 910 911 mutex_unlock(&applesmc_lock); 912 913 return count; 914 } 915 916 static struct led_classdev applesmc_backlight = { 917 .name = "smc::kbd_backlight", 918 .default_trigger = "nand-disk", 919 .brightness_set = applesmc_brightness_set, 920 }; 921 922 static DEVICE_ATTR(name, 0444, applesmc_name_show, NULL); 923 924 static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL); 925 static DEVICE_ATTR(calibrate, 0644, 926 applesmc_calibrate_show, applesmc_calibrate_store); 927 928 static struct attribute *accelerometer_attributes[] = { 929 &dev_attr_position.attr, 930 &dev_attr_calibrate.attr, 931 NULL 932 }; 933 934 static const struct attribute_group accelerometer_attributes_group = 935 { .attrs = accelerometer_attributes }; 936 937 static DEVICE_ATTR(light, 0444, applesmc_light_show, NULL); 938 939 static DEVICE_ATTR(key_count, 0444, applesmc_key_count_show, NULL); 940 static DEVICE_ATTR(key_at_index, 0644, 941 applesmc_key_at_index_show, applesmc_key_at_index_store); 942 static DEVICE_ATTR(key_at_index_name, 0444, 943 applesmc_key_at_index_name_show, NULL); 944 static DEVICE_ATTR(key_at_index_type, 0444, 945 applesmc_key_at_index_type_show, NULL); 946 static DEVICE_ATTR(key_at_index_data_length, 0444, 947 applesmc_key_at_index_data_length_show, NULL); 948 static DEVICE_ATTR(key_at_index_data, 0444, 949 applesmc_key_at_index_read_show, NULL); 950 951 static struct attribute *key_enumeration_attributes[] = { 952 &dev_attr_key_count.attr, 953 &dev_attr_key_at_index.attr, 954 &dev_attr_key_at_index_name.attr, 955 &dev_attr_key_at_index_type.attr, 956 &dev_attr_key_at_index_data_length.attr, 957 &dev_attr_key_at_index_data.attr, 958 NULL 959 }; 960 961 static const struct attribute_group key_enumeration_group = 962 { .attrs = key_enumeration_attributes }; 963 964 /* 965 * Macro defining SENSOR_DEVICE_ATTR for a fan sysfs entries. 966 * - show actual speed 967 * - show/store minimum speed 968 * - show maximum speed 969 * - show safe speed 970 * - show/store target speed 971 * - show/store manual mode 972 */ 973 #define sysfs_fan_speeds_offset(offset) \ 974 static SENSOR_DEVICE_ATTR_2(fan##offset##_input, S_IRUGO, \ 975 applesmc_show_fan_speed, NULL, 0, offset-1); \ 976 \ 977 static SENSOR_DEVICE_ATTR_2(fan##offset##_min, S_IRUGO | S_IWUSR, \ 978 applesmc_show_fan_speed, applesmc_store_fan_speed, 1, offset-1); \ 979 \ 980 static SENSOR_DEVICE_ATTR_2(fan##offset##_max, S_IRUGO, \ 981 applesmc_show_fan_speed, NULL, 2, offset-1); \ 982 \ 983 static SENSOR_DEVICE_ATTR_2(fan##offset##_safe, S_IRUGO, \ 984 applesmc_show_fan_speed, NULL, 3, offset-1); \ 985 \ 986 static SENSOR_DEVICE_ATTR_2(fan##offset##_output, S_IRUGO | S_IWUSR, \ 987 applesmc_show_fan_speed, applesmc_store_fan_speed, 4, offset-1); \ 988 \ 989 static SENSOR_DEVICE_ATTR(fan##offset##_manual, S_IRUGO | S_IWUSR, \ 990 applesmc_show_fan_manual, applesmc_store_fan_manual, offset-1); \ 991 \ 992 static SENSOR_DEVICE_ATTR(fan##offset##_label, S_IRUGO, \ 993 applesmc_show_fan_position, NULL, offset-1); \ 994 \ 995 static struct attribute *fan##offset##_attributes[] = { \ 996 &sensor_dev_attr_fan##offset##_input.dev_attr.attr, \ 997 &sensor_dev_attr_fan##offset##_min.dev_attr.attr, \ 998 &sensor_dev_attr_fan##offset##_max.dev_attr.attr, \ 999 &sensor_dev_attr_fan##offset##_safe.dev_attr.attr, \ 1000 &sensor_dev_attr_fan##offset##_output.dev_attr.attr, \ 1001 &sensor_dev_attr_fan##offset##_manual.dev_attr.attr, \ 1002 &sensor_dev_attr_fan##offset##_label.dev_attr.attr, \ 1003 NULL \ 1004 }; 1005 1006 /* 1007 * Create the needed functions for each fan using the macro defined above 1008 * (4 fans are supported) 1009 */ 1010 sysfs_fan_speeds_offset(1); 1011 sysfs_fan_speeds_offset(2); 1012 sysfs_fan_speeds_offset(3); 1013 sysfs_fan_speeds_offset(4); 1014 1015 static const struct attribute_group fan_attribute_groups[] = { 1016 { .attrs = fan1_attributes }, 1017 { .attrs = fan2_attributes }, 1018 { .attrs = fan3_attributes }, 1019 { .attrs = fan4_attributes }, 1020 }; 1021 1022 /* 1023 * Temperature sensors sysfs entries. 1024 */ 1025 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, 1026 applesmc_show_temperature, NULL, 0); 1027 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, 1028 applesmc_show_temperature, NULL, 1); 1029 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, 1030 applesmc_show_temperature, NULL, 2); 1031 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, 1032 applesmc_show_temperature, NULL, 3); 1033 static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, 1034 applesmc_show_temperature, NULL, 4); 1035 static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, 1036 applesmc_show_temperature, NULL, 5); 1037 static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, 1038 applesmc_show_temperature, NULL, 6); 1039 static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, 1040 applesmc_show_temperature, NULL, 7); 1041 static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, 1042 applesmc_show_temperature, NULL, 8); 1043 static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, 1044 applesmc_show_temperature, NULL, 9); 1045 static SENSOR_DEVICE_ATTR(temp11_input, S_IRUGO, 1046 applesmc_show_temperature, NULL, 10); 1047 static SENSOR_DEVICE_ATTR(temp12_input, S_IRUGO, 1048 applesmc_show_temperature, NULL, 11); 1049 static SENSOR_DEVICE_ATTR(temp13_input, S_IRUGO, 1050 applesmc_show_temperature, NULL, 12); 1051 static SENSOR_DEVICE_ATTR(temp14_input, S_IRUGO, 1052 applesmc_show_temperature, NULL, 13); 1053 static SENSOR_DEVICE_ATTR(temp15_input, S_IRUGO, 1054 applesmc_show_temperature, NULL, 14); 1055 static SENSOR_DEVICE_ATTR(temp16_input, S_IRUGO, 1056 applesmc_show_temperature, NULL, 15); 1057 static SENSOR_DEVICE_ATTR(temp17_input, S_IRUGO, 1058 applesmc_show_temperature, NULL, 16); 1059 static SENSOR_DEVICE_ATTR(temp18_input, S_IRUGO, 1060 applesmc_show_temperature, NULL, 17); 1061 static SENSOR_DEVICE_ATTR(temp19_input, S_IRUGO, 1062 applesmc_show_temperature, NULL, 18); 1063 static SENSOR_DEVICE_ATTR(temp20_input, S_IRUGO, 1064 applesmc_show_temperature, NULL, 19); 1065 static SENSOR_DEVICE_ATTR(temp21_input, S_IRUGO, 1066 applesmc_show_temperature, NULL, 20); 1067 static SENSOR_DEVICE_ATTR(temp22_input, S_IRUGO, 1068 applesmc_show_temperature, NULL, 21); 1069 static SENSOR_DEVICE_ATTR(temp23_input, S_IRUGO, 1070 applesmc_show_temperature, NULL, 22); 1071 static SENSOR_DEVICE_ATTR(temp24_input, S_IRUGO, 1072 applesmc_show_temperature, NULL, 23); 1073 static SENSOR_DEVICE_ATTR(temp25_input, S_IRUGO, 1074 applesmc_show_temperature, NULL, 24); 1075 static SENSOR_DEVICE_ATTR(temp26_input, S_IRUGO, 1076 applesmc_show_temperature, NULL, 25); 1077 static SENSOR_DEVICE_ATTR(temp27_input, S_IRUGO, 1078 applesmc_show_temperature, NULL, 26); 1079 static SENSOR_DEVICE_ATTR(temp28_input, S_IRUGO, 1080 applesmc_show_temperature, NULL, 27); 1081 static SENSOR_DEVICE_ATTR(temp29_input, S_IRUGO, 1082 applesmc_show_temperature, NULL, 28); 1083 static SENSOR_DEVICE_ATTR(temp30_input, S_IRUGO, 1084 applesmc_show_temperature, NULL, 29); 1085 static SENSOR_DEVICE_ATTR(temp31_input, S_IRUGO, 1086 applesmc_show_temperature, NULL, 30); 1087 static SENSOR_DEVICE_ATTR(temp32_input, S_IRUGO, 1088 applesmc_show_temperature, NULL, 31); 1089 static SENSOR_DEVICE_ATTR(temp33_input, S_IRUGO, 1090 applesmc_show_temperature, NULL, 32); 1091 static SENSOR_DEVICE_ATTR(temp34_input, S_IRUGO, 1092 applesmc_show_temperature, NULL, 33); 1093 static SENSOR_DEVICE_ATTR(temp35_input, S_IRUGO, 1094 applesmc_show_temperature, NULL, 34); 1095 1096 static struct attribute *temperature_attributes[] = { 1097 &sensor_dev_attr_temp1_input.dev_attr.attr, 1098 &sensor_dev_attr_temp2_input.dev_attr.attr, 1099 &sensor_dev_attr_temp3_input.dev_attr.attr, 1100 &sensor_dev_attr_temp4_input.dev_attr.attr, 1101 &sensor_dev_attr_temp5_input.dev_attr.attr, 1102 &sensor_dev_attr_temp6_input.dev_attr.attr, 1103 &sensor_dev_attr_temp7_input.dev_attr.attr, 1104 &sensor_dev_attr_temp8_input.dev_attr.attr, 1105 &sensor_dev_attr_temp9_input.dev_attr.attr, 1106 &sensor_dev_attr_temp10_input.dev_attr.attr, 1107 &sensor_dev_attr_temp11_input.dev_attr.attr, 1108 &sensor_dev_attr_temp12_input.dev_attr.attr, 1109 &sensor_dev_attr_temp13_input.dev_attr.attr, 1110 &sensor_dev_attr_temp14_input.dev_attr.attr, 1111 &sensor_dev_attr_temp15_input.dev_attr.attr, 1112 &sensor_dev_attr_temp16_input.dev_attr.attr, 1113 &sensor_dev_attr_temp17_input.dev_attr.attr, 1114 &sensor_dev_attr_temp18_input.dev_attr.attr, 1115 &sensor_dev_attr_temp19_input.dev_attr.attr, 1116 &sensor_dev_attr_temp20_input.dev_attr.attr, 1117 &sensor_dev_attr_temp21_input.dev_attr.attr, 1118 &sensor_dev_attr_temp22_input.dev_attr.attr, 1119 &sensor_dev_attr_temp23_input.dev_attr.attr, 1120 &sensor_dev_attr_temp24_input.dev_attr.attr, 1121 &sensor_dev_attr_temp25_input.dev_attr.attr, 1122 &sensor_dev_attr_temp26_input.dev_attr.attr, 1123 &sensor_dev_attr_temp27_input.dev_attr.attr, 1124 &sensor_dev_attr_temp28_input.dev_attr.attr, 1125 &sensor_dev_attr_temp29_input.dev_attr.attr, 1126 &sensor_dev_attr_temp30_input.dev_attr.attr, 1127 &sensor_dev_attr_temp31_input.dev_attr.attr, 1128 &sensor_dev_attr_temp32_input.dev_attr.attr, 1129 &sensor_dev_attr_temp33_input.dev_attr.attr, 1130 &sensor_dev_attr_temp34_input.dev_attr.attr, 1131 &sensor_dev_attr_temp35_input.dev_attr.attr, 1132 NULL 1133 }; 1134 1135 static const struct attribute_group temperature_attributes_group = 1136 { .attrs = temperature_attributes }; 1137 1138 /* Module stuff */ 1139 1140 /* 1141 * applesmc_dmi_match - found a match. return one, short-circuiting the hunt. 1142 */ 1143 static int applesmc_dmi_match(const struct dmi_system_id *id) 1144 { 1145 int i = 0; 1146 struct dmi_match_data* dmi_data = id->driver_data; 1147 printk(KERN_INFO "applesmc: %s detected:\n", id->ident); 1148 applesmc_accelerometer = dmi_data->accelerometer; 1149 printk(KERN_INFO "applesmc: - Model %s accelerometer\n", 1150 applesmc_accelerometer ? "with" : "without"); 1151 applesmc_light = dmi_data->light; 1152 printk(KERN_INFO "applesmc: - Model %s light sensors and backlight\n", 1153 applesmc_light ? "with" : "without"); 1154 1155 applesmc_temperature_set = dmi_data->temperature_set; 1156 while (temperature_sensors_sets[applesmc_temperature_set][i] != NULL) 1157 i++; 1158 printk(KERN_INFO "applesmc: - Model with %d temperature sensors\n", i); 1159 return 1; 1160 } 1161 1162 /* Create accelerometer ressources */ 1163 static int applesmc_create_accelerometer(void) 1164 { 1165 struct input_dev *idev; 1166 int ret; 1167 1168 ret = sysfs_create_group(&pdev->dev.kobj, 1169 &accelerometer_attributes_group); 1170 if (ret) 1171 goto out; 1172 1173 applesmc_idev = input_allocate_polled_device(); 1174 if (!applesmc_idev) { 1175 ret = -ENOMEM; 1176 goto out_sysfs; 1177 } 1178 1179 applesmc_idev->poll = applesmc_idev_poll; 1180 applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL; 1181 1182 /* initial calibrate for the input device */ 1183 applesmc_calibrate(); 1184 1185 /* initialize the input device */ 1186 idev = applesmc_idev->input; 1187 idev->name = "applesmc"; 1188 idev->id.bustype = BUS_HOST; 1189 idev->dev.parent = &pdev->dev; 1190 idev->evbit[0] = BIT_MASK(EV_ABS); 1191 input_set_abs_params(idev, ABS_X, 1192 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); 1193 input_set_abs_params(idev, ABS_Y, 1194 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); 1195 1196 ret = input_register_polled_device(applesmc_idev); 1197 if (ret) 1198 goto out_idev; 1199 1200 return 0; 1201 1202 out_idev: 1203 input_free_polled_device(applesmc_idev); 1204 1205 out_sysfs: 1206 sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group); 1207 1208 out: 1209 printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret); 1210 return ret; 1211 } 1212 1213 /* Release all ressources used by the accelerometer */ 1214 static void applesmc_release_accelerometer(void) 1215 { 1216 input_unregister_polled_device(applesmc_idev); 1217 input_free_polled_device(applesmc_idev); 1218 sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group); 1219 } 1220 1221 static __initdata struct dmi_match_data applesmc_dmi_data[] = { 1222 /* MacBook Pro: accelerometer, backlight and temperature set 0 */ 1223 { .accelerometer = 1, .light = 1, .temperature_set = 0 }, 1224 /* MacBook2: accelerometer and temperature set 1 */ 1225 { .accelerometer = 1, .light = 0, .temperature_set = 1 }, 1226 /* MacBook: accelerometer and temperature set 2 */ 1227 { .accelerometer = 1, .light = 0, .temperature_set = 2 }, 1228 /* MacMini: temperature set 3 */ 1229 { .accelerometer = 0, .light = 0, .temperature_set = 3 }, 1230 /* MacPro: temperature set 4 */ 1231 { .accelerometer = 0, .light = 0, .temperature_set = 4 }, 1232 /* iMac: temperature set 5 */ 1233 { .accelerometer = 0, .light = 0, .temperature_set = 5 }, 1234 /* MacBook3: accelerometer and temperature set 6 */ 1235 { .accelerometer = 1, .light = 0, .temperature_set = 6 }, 1236 }; 1237 1238 /* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1". 1239 * So we need to put "Apple MacBook Pro" before "Apple MacBook". */ 1240 static __initdata struct dmi_system_id applesmc_whitelist[] = { 1241 { applesmc_dmi_match, "Apple MacBook Pro", { 1242 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), 1243 DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro") }, 1244 (void*)&applesmc_dmi_data[0]}, 1245 { applesmc_dmi_match, "Apple MacBook (v2)", { 1246 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), 1247 DMI_MATCH(DMI_PRODUCT_NAME,"MacBook2") }, 1248 (void*)&applesmc_dmi_data[1]}, 1249 { applesmc_dmi_match, "Apple MacBook (v3)", { 1250 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), 1251 DMI_MATCH(DMI_PRODUCT_NAME,"MacBook3") }, 1252 (void*)&applesmc_dmi_data[6]}, 1253 { applesmc_dmi_match, "Apple MacBook", { 1254 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), 1255 DMI_MATCH(DMI_PRODUCT_NAME,"MacBook") }, 1256 (void*)&applesmc_dmi_data[2]}, 1257 { applesmc_dmi_match, "Apple Macmini", { 1258 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), 1259 DMI_MATCH(DMI_PRODUCT_NAME,"Macmini") }, 1260 (void*)&applesmc_dmi_data[3]}, 1261 { applesmc_dmi_match, "Apple MacPro2", { 1262 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), 1263 DMI_MATCH(DMI_PRODUCT_NAME,"MacPro2") }, 1264 (void*)&applesmc_dmi_data[4]}, 1265 { applesmc_dmi_match, "Apple iMac", { 1266 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), 1267 DMI_MATCH(DMI_PRODUCT_NAME,"iMac") }, 1268 (void*)&applesmc_dmi_data[5]}, 1269 { .ident = NULL } 1270 }; 1271 1272 static int __init applesmc_init(void) 1273 { 1274 int ret; 1275 int count; 1276 int i; 1277 1278 if (!dmi_check_system(applesmc_whitelist)) { 1279 printk(KERN_WARNING "applesmc: supported laptop not found!\n"); 1280 ret = -ENODEV; 1281 goto out; 1282 } 1283 1284 if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS, 1285 "applesmc")) { 1286 ret = -ENXIO; 1287 goto out; 1288 } 1289 1290 ret = platform_driver_register(&applesmc_driver); 1291 if (ret) 1292 goto out_region; 1293 1294 pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT, 1295 NULL, 0); 1296 if (IS_ERR(pdev)) { 1297 ret = PTR_ERR(pdev); 1298 goto out_driver; 1299 } 1300 1301 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_name.attr); 1302 if (ret) 1303 goto out_device; 1304 1305 /* Create key enumeration sysfs files */ 1306 ret = sysfs_create_group(&pdev->dev.kobj, &key_enumeration_group); 1307 if (ret) 1308 goto out_name; 1309 1310 /* create fan files */ 1311 count = applesmc_get_fan_count(); 1312 if (count < 0) { 1313 printk(KERN_ERR "applesmc: Cannot get the number of fans.\n"); 1314 } else { 1315 printk(KERN_INFO "applesmc: %d fans found.\n", count); 1316 1317 switch (count) { 1318 default: 1319 printk(KERN_WARNING "applesmc: More than 4 fans found," 1320 " but at most 4 fans are supported" 1321 " by the driver.\n"); 1322 case 4: 1323 ret = sysfs_create_group(&pdev->dev.kobj, 1324 &fan_attribute_groups[3]); 1325 if (ret) 1326 goto out_key_enumeration; 1327 case 3: 1328 ret = sysfs_create_group(&pdev->dev.kobj, 1329 &fan_attribute_groups[2]); 1330 if (ret) 1331 goto out_key_enumeration; 1332 case 2: 1333 ret = sysfs_create_group(&pdev->dev.kobj, 1334 &fan_attribute_groups[1]); 1335 if (ret) 1336 goto out_key_enumeration; 1337 case 1: 1338 ret = sysfs_create_group(&pdev->dev.kobj, 1339 &fan_attribute_groups[0]); 1340 if (ret) 1341 goto out_fan_1; 1342 case 0: 1343 ; 1344 } 1345 } 1346 1347 for (i = 0; 1348 temperature_sensors_sets[applesmc_temperature_set][i] != NULL; 1349 i++) { 1350 if (temperature_attributes[i] == NULL) { 1351 printk(KERN_ERR "applesmc: More temperature sensors " 1352 "in temperature_sensors_sets (at least %i)" 1353 "than available sysfs files in " 1354 "temperature_attributes (%i), please report " 1355 "this bug.\n", i, i-1); 1356 goto out_temperature; 1357 } 1358 ret = sysfs_create_file(&pdev->dev.kobj, 1359 temperature_attributes[i]); 1360 if (ret) 1361 goto out_temperature; 1362 } 1363 1364 if (applesmc_accelerometer) { 1365 ret = applesmc_create_accelerometer(); 1366 if (ret) 1367 goto out_temperature; 1368 } 1369 1370 if (applesmc_light) { 1371 /* Add light sensor file */ 1372 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_light.attr); 1373 if (ret) 1374 goto out_accelerometer; 1375 1376 /* Create the workqueue */ 1377 applesmc_led_wq = create_singlethread_workqueue("applesmc-led"); 1378 if (!applesmc_led_wq) { 1379 ret = -ENOMEM; 1380 goto out_light_sysfs; 1381 } 1382 1383 /* register as a led device */ 1384 ret = led_classdev_register(&pdev->dev, &applesmc_backlight); 1385 if (ret < 0) 1386 goto out_light_wq; 1387 } 1388 1389 hwmon_dev = hwmon_device_register(&pdev->dev); 1390 if (IS_ERR(hwmon_dev)) { 1391 ret = PTR_ERR(hwmon_dev); 1392 goto out_light_ledclass; 1393 } 1394 1395 printk(KERN_INFO "applesmc: driver successfully loaded.\n"); 1396 1397 return 0; 1398 1399 out_light_ledclass: 1400 if (applesmc_light) 1401 led_classdev_unregister(&applesmc_backlight); 1402 out_light_wq: 1403 if (applesmc_light) 1404 destroy_workqueue(applesmc_led_wq); 1405 out_light_sysfs: 1406 if (applesmc_light) 1407 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr); 1408 out_accelerometer: 1409 if (applesmc_accelerometer) 1410 applesmc_release_accelerometer(); 1411 out_temperature: 1412 sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group); 1413 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]); 1414 out_fan_1: 1415 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]); 1416 out_key_enumeration: 1417 sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group); 1418 out_name: 1419 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr); 1420 out_device: 1421 platform_device_unregister(pdev); 1422 out_driver: 1423 platform_driver_unregister(&applesmc_driver); 1424 out_region: 1425 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); 1426 out: 1427 printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret); 1428 return ret; 1429 } 1430 1431 static void __exit applesmc_exit(void) 1432 { 1433 hwmon_device_unregister(hwmon_dev); 1434 if (applesmc_light) { 1435 led_classdev_unregister(&applesmc_backlight); 1436 destroy_workqueue(applesmc_led_wq); 1437 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr); 1438 } 1439 if (applesmc_accelerometer) 1440 applesmc_release_accelerometer(); 1441 sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group); 1442 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]); 1443 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]); 1444 sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group); 1445 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr); 1446 platform_device_unregister(pdev); 1447 platform_driver_unregister(&applesmc_driver); 1448 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); 1449 1450 printk(KERN_INFO "applesmc: driver unloaded.\n"); 1451 } 1452 1453 module_init(applesmc_init); 1454 module_exit(applesmc_exit); 1455 1456 MODULE_AUTHOR("Nicolas Boichat"); 1457 MODULE_DESCRIPTION("Apple SMC"); 1458 MODULE_LICENSE("GPL v2"); 1459