blob: 941729a131f5c41498f47bc77c55c6cc2181736f [file] [log] [blame]
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001/*
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.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).
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070082 */
83static const char* temperature_sensors_sets[][13] = {
Martin Szulecki1bed24b2007-07-09 11:41:36 -070084/* Set 0: Macbook Pro */
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070085 { "TA0P", "TB0T", "TC0D", "TC0P", "TG0H", "TG0P", "TG0T", "Th0H",
86 "Th1H", "Tm0P", "Ts0P", "Ts1P", NULL },
Martin Szulecki1bed24b2007-07-09 11:41:36 -070087/* Set 1: Macbook set */
88 { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TN1P", "Th0H", "Th0S",
89 "Th1H", "Ts0P", NULL },
90/* Set 2: Macmini set */
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070091 { "TC0D", "TC0P", NULL }
92};
93
94/* List of keys used to read/write fan speeds */
95static 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_PERIOD (HZ/20) /* poll for input every 1/20s */
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 */
115struct 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
124static const int debug;
125static struct platform_device *pdev;
126static s16 rest_x;
127static s16 rest_y;
128static struct timer_list applesmc_timer;
129static struct input_dev *applesmc_idev;
130static struct class_device *hwmon_class_dev;
131
132/* Indicates whether this computer has an accelerometer. */
133static unsigned int applesmc_accelerometer;
134
135/* Indicates whether this computer has light sensors and keyboard backlight. */
136static unsigned int applesmc_light;
137
138/* Indicates which temperature sensors set to use. */
139static unsigned int applesmc_temperature_set;
140
141static struct mutex applesmc_lock;
142
143/*
144 * Last index written to key_at_index sysfs file, and value to use for all other
145 * key_at_index_* sysfs files.
146 */
147static unsigned int key_at_index;
148
149static struct workqueue_struct *applesmc_led_wq;
150
151/*
152 * __wait_status - Wait up to 2ms for the status port to get a certain value
153 * (masked with 0x0f), returning zero if the value is obtained. Callers must
154 * hold applesmc_lock.
155 */
156static int __wait_status(u8 val)
157{
158 unsigned int i;
159
160 val = val & APPLESMC_STATUS_MASK;
161
162 for (i = 0; i < 200; i++) {
163 if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) {
164 if (debug)
165 printk(KERN_DEBUG
166 "Waited %d us for status %x\n",
167 i*10, val);
168 return 0;
169 }
170 udelay(10);
171 }
172
173 printk(KERN_WARNING "applesmc: wait status failed: %x != %x\n",
174 val, inb(APPLESMC_CMD_PORT));
175
176 return -EIO;
177}
178
179/*
180 * applesmc_read_key - reads len bytes from a given key, and put them in buffer.
181 * Returns zero on success or a negative error on failure. Callers must
182 * hold applesmc_lock.
183 */
184static int applesmc_read_key(const char* key, u8* buffer, u8 len)
185{
186 int i;
187
188 if (len > APPLESMC_MAX_DATA_LENGTH) {
189 printk(KERN_ERR "applesmc_read_key: cannot read more than "
190 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH);
191 return -EINVAL;
192 }
193
194 outb(APPLESMC_READ_CMD, APPLESMC_CMD_PORT);
195 if (__wait_status(0x0c))
196 return -EIO;
197
198 for (i = 0; i < 4; i++) {
199 outb(key[i], APPLESMC_DATA_PORT);
200 if (__wait_status(0x04))
201 return -EIO;
202 }
203 if (debug)
204 printk(KERN_DEBUG "<%s", key);
205
206 outb(len, APPLESMC_DATA_PORT);
207 if (debug)
208 printk(KERN_DEBUG ">%x", len);
209
210 for (i = 0; i < len; i++) {
211 if (__wait_status(0x05))
212 return -EIO;
213 buffer[i] = inb(APPLESMC_DATA_PORT);
214 if (debug)
215 printk(KERN_DEBUG "<%x", buffer[i]);
216 }
217 if (debug)
218 printk(KERN_DEBUG "\n");
219
220 return 0;
221}
222
223/*
224 * applesmc_write_key - writes len bytes from buffer to a given key.
225 * Returns zero on success or a negative error on failure. Callers must
226 * hold applesmc_lock.
227 */
228static int applesmc_write_key(const char* key, u8* buffer, u8 len)
229{
230 int i;
231
232 if (len > APPLESMC_MAX_DATA_LENGTH) {
233 printk(KERN_ERR "applesmc_write_key: cannot write more than "
234 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH);
235 return -EINVAL;
236 }
237
238 outb(APPLESMC_WRITE_CMD, APPLESMC_CMD_PORT);
239 if (__wait_status(0x0c))
240 return -EIO;
241
242 for (i = 0; i < 4; i++) {
243 outb(key[i], APPLESMC_DATA_PORT);
244 if (__wait_status(0x04))
245 return -EIO;
246 }
247
248 outb(len, APPLESMC_DATA_PORT);
249
250 for (i = 0; i < len; i++) {
251 if (__wait_status(0x04))
252 return -EIO;
253 outb(buffer[i], APPLESMC_DATA_PORT);
254 }
255
256 return 0;
257}
258
259/*
260 * applesmc_get_key_at_index - get key at index, and put the result in key
261 * (char[6]). Returns zero on success or a negative error on failure. Callers
262 * must hold applesmc_lock.
263 */
264static int applesmc_get_key_at_index(int index, char* key)
265{
266 int i;
267 u8 readkey[4];
268 readkey[0] = index >> 24;
269 readkey[1] = index >> 16;
270 readkey[2] = index >> 8;
271 readkey[3] = index;
272
273 outb(APPLESMC_GET_KEY_BY_INDEX_CMD, APPLESMC_CMD_PORT);
274 if (__wait_status(0x0c))
275 return -EIO;
276
277 for (i = 0; i < 4; i++) {
278 outb(readkey[i], APPLESMC_DATA_PORT);
279 if (__wait_status(0x04))
280 return -EIO;
281 }
282
283 outb(4, APPLESMC_DATA_PORT);
284
285 for (i = 0; i < 4; i++) {
286 if (__wait_status(0x05))
287 return -EIO;
288 key[i] = inb(APPLESMC_DATA_PORT);
289 }
290 key[4] = 0;
291
292 return 0;
293}
294
295/*
296 * applesmc_get_key_type - get key type, and put the result in type (char[6]).
297 * Returns zero on success or a negative error on failure. Callers must
298 * hold applesmc_lock.
299 */
300static int applesmc_get_key_type(char* key, char* type)
301{
302 int i;
303
304 outb(APPLESMC_GET_KEY_TYPE_CMD, APPLESMC_CMD_PORT);
305 if (__wait_status(0x0c))
306 return -EIO;
307
308 for (i = 0; i < 4; i++) {
309 outb(key[i], APPLESMC_DATA_PORT);
310 if (__wait_status(0x04))
311 return -EIO;
312 }
313
314 outb(5, APPLESMC_DATA_PORT);
315
316 for (i = 0; i < 6; i++) {
317 if (__wait_status(0x05))
318 return -EIO;
319 type[i] = inb(APPLESMC_DATA_PORT);
320 }
321 type[5] = 0;
322
323 return 0;
324}
325
326/*
327 * applesmc_read_motion_sensor - Read motion sensor (X, Y or Z). Callers must
328 * hold applesmc_lock.
329 */
330static int applesmc_read_motion_sensor(int index, s16* value)
331{
332 u8 buffer[2];
333 int ret;
334
335 switch (index) {
336 case SENSOR_X:
337 ret = applesmc_read_key(MOTION_SENSOR_X_KEY, buffer, 2);
338 break;
339 case SENSOR_Y:
340 ret = applesmc_read_key(MOTION_SENSOR_Y_KEY, buffer, 2);
341 break;
342 case SENSOR_Z:
343 ret = applesmc_read_key(MOTION_SENSOR_Z_KEY, buffer, 2);
344 break;
345 default:
346 ret = -EINVAL;
347 }
348
349 *value = ((s16)buffer[0] << 8) | buffer[1];
350
351 return ret;
352}
353
354/*
355 * applesmc_device_init - initialize the accelerometer. Returns zero on success
356 * and negative error code on failure. Can sleep.
357 */
358static int applesmc_device_init(void)
359{
360 int total, ret = -ENXIO;
361 u8 buffer[2];
362
363 if (!applesmc_accelerometer)
364 return 0;
365
366 mutex_lock(&applesmc_lock);
367
368 for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) {
369 if (debug)
370 printk(KERN_DEBUG "applesmc try %d\n", total);
371 if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) &&
372 (buffer[0] != 0x00 || buffer[1] != 0x00)) {
373 if (total == INIT_TIMEOUT_MSECS) {
374 printk(KERN_DEBUG "applesmc: device has"
375 " already been initialized"
376 " (0x%02x, 0x%02x).\n",
377 buffer[0], buffer[1]);
378 } else {
379 printk(KERN_DEBUG "applesmc: device"
380 " successfully initialized"
381 " (0x%02x, 0x%02x).\n",
382 buffer[0], buffer[1]);
383 }
384 ret = 0;
385 goto out;
386 }
387 buffer[0] = 0xe0;
388 buffer[1] = 0x00;
389 applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2);
390 msleep(INIT_WAIT_MSECS);
391 }
392
393 printk(KERN_WARNING "applesmc: failed to init the device\n");
394
395out:
396 mutex_unlock(&applesmc_lock);
397 return ret;
398}
399
400/*
401 * applesmc_get_fan_count - get the number of fans. Callers must NOT hold
402 * applesmc_lock.
403 */
404static int applesmc_get_fan_count(void)
405{
406 int ret;
407 u8 buffer[1];
408
409 mutex_lock(&applesmc_lock);
410
411 ret = applesmc_read_key(FANS_COUNT, buffer, 1);
412
413 mutex_unlock(&applesmc_lock);
414 if (ret)
415 return ret;
416 else
417 return buffer[0];
418}
419
420/* Device model stuff */
421static int applesmc_probe(struct platform_device *dev)
422{
423 int ret;
424
425 ret = applesmc_device_init();
426 if (ret)
427 return ret;
428
429 printk(KERN_INFO "applesmc: device successfully initialized.\n");
430 return 0;
431}
432
433static int applesmc_resume(struct platform_device *dev)
434{
435 return applesmc_device_init();
436}
437
438static struct platform_driver applesmc_driver = {
439 .probe = applesmc_probe,
440 .resume = applesmc_resume,
441 .driver = {
442 .name = "applesmc",
443 .owner = THIS_MODULE,
444 },
445};
446
447/*
448 * applesmc_calibrate - Set our "resting" values. Callers must
449 * hold applesmc_lock.
450 */
451static void applesmc_calibrate(void)
452{
453 applesmc_read_motion_sensor(SENSOR_X, &rest_x);
454 applesmc_read_motion_sensor(SENSOR_Y, &rest_y);
455 rest_x = -rest_x;
456}
457
458static int applesmc_idev_open(struct input_dev *dev)
459{
460 add_timer(&applesmc_timer);
461
462 return 0;
463}
464
465static void applesmc_idev_close(struct input_dev *dev)
466{
467 del_timer_sync(&applesmc_timer);
468}
469
470static void applesmc_idev_poll(unsigned long unused)
471{
472 s16 x, y;
473
474 /* Cannot sleep. Try nonblockingly. If we fail, try again later. */
475 if (!mutex_trylock(&applesmc_lock)) {
476 mod_timer(&applesmc_timer, jiffies + APPLESMC_POLL_PERIOD);
477 return;
478 }
479
480 if (applesmc_read_motion_sensor(SENSOR_X, &x))
481 goto out;
482 if (applesmc_read_motion_sensor(SENSOR_Y, &y))
483 goto out;
484
485 x = -x;
486 input_report_abs(applesmc_idev, ABS_X, x - rest_x);
487 input_report_abs(applesmc_idev, ABS_Y, y - rest_y);
488 input_sync(applesmc_idev);
489
490out:
491 mod_timer(&applesmc_timer, jiffies + APPLESMC_POLL_PERIOD);
492
493 mutex_unlock(&applesmc_lock);
494}
495
496/* Sysfs Files */
497
Nicolas Boichatfa744192007-05-23 13:58:13 -0700498static ssize_t applesmc_name_show(struct device *dev,
499 struct device_attribute *attr, char *buf)
500{
501 return snprintf(buf, PAGE_SIZE, "applesmc\n");
502}
503
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700504static ssize_t applesmc_position_show(struct device *dev,
505 struct device_attribute *attr, char *buf)
506{
507 int ret;
508 s16 x, y, z;
509
510 mutex_lock(&applesmc_lock);
511
512 ret = applesmc_read_motion_sensor(SENSOR_X, &x);
513 if (ret)
514 goto out;
515 ret = applesmc_read_motion_sensor(SENSOR_Y, &y);
516 if (ret)
517 goto out;
518 ret = applesmc_read_motion_sensor(SENSOR_Z, &z);
519 if (ret)
520 goto out;
521
522out:
523 mutex_unlock(&applesmc_lock);
524 if (ret)
525 return ret;
526 else
527 return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z);
528}
529
530static ssize_t applesmc_light_show(struct device *dev,
531 struct device_attribute *attr, char *sysfsbuf)
532{
533 int ret;
534 u8 left = 0, right = 0;
535 u8 buffer[6];
536
537 mutex_lock(&applesmc_lock);
538
539 ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, 6);
540 left = buffer[2];
541 if (ret)
542 goto out;
543 ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, 6);
544 right = buffer[2];
545
546out:
547 mutex_unlock(&applesmc_lock);
548 if (ret)
549 return ret;
550 else
551 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right);
552}
553
554/* Displays degree Celsius * 1000 */
555static ssize_t applesmc_show_temperature(struct device *dev,
556 struct device_attribute *devattr, char *sysfsbuf)
557{
558 int ret;
559 u8 buffer[2];
560 unsigned int temp;
561 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
562 const char* key =
563 temperature_sensors_sets[applesmc_temperature_set][attr->index];
564
565 mutex_lock(&applesmc_lock);
566
567 ret = applesmc_read_key(key, buffer, 2);
568 temp = buffer[0]*1000;
569 temp += (buffer[1] >> 6) * 250;
570
571 mutex_unlock(&applesmc_lock);
572
573 if (ret)
574 return ret;
575 else
576 return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp);
577}
578
579static ssize_t applesmc_show_fan_speed(struct device *dev,
580 struct device_attribute *attr, char *sysfsbuf)
581{
582 int ret;
583 unsigned int speed = 0;
584 char newkey[5];
585 u8 buffer[2];
586 struct sensor_device_attribute_2 *sensor_attr =
587 to_sensor_dev_attr_2(attr);
588
589 newkey[0] = fan_speed_keys[sensor_attr->nr][0];
590 newkey[1] = '0' + sensor_attr->index;
591 newkey[2] = fan_speed_keys[sensor_attr->nr][2];
592 newkey[3] = fan_speed_keys[sensor_attr->nr][3];
593 newkey[4] = 0;
594
595 mutex_lock(&applesmc_lock);
596
597 ret = applesmc_read_key(newkey, buffer, 2);
598 speed = ((buffer[0] << 8 | buffer[1]) >> 2);
599
600 mutex_unlock(&applesmc_lock);
601 if (ret)
602 return ret;
603 else
604 return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed);
605}
606
607static ssize_t applesmc_store_fan_speed(struct device *dev,
608 struct device_attribute *attr,
609 const char *sysfsbuf, size_t count)
610{
611 int ret;
612 u32 speed;
613 char newkey[5];
614 u8 buffer[2];
615 struct sensor_device_attribute_2 *sensor_attr =
616 to_sensor_dev_attr_2(attr);
617
618 speed = simple_strtoul(sysfsbuf, NULL, 10);
619
620 if (speed > 0x4000) /* Bigger than a 14-bit value */
621 return -EINVAL;
622
623 newkey[0] = fan_speed_keys[sensor_attr->nr][0];
624 newkey[1] = '0' + sensor_attr->index;
625 newkey[2] = fan_speed_keys[sensor_attr->nr][2];
626 newkey[3] = fan_speed_keys[sensor_attr->nr][3];
627 newkey[4] = 0;
628
629 mutex_lock(&applesmc_lock);
630
631 buffer[0] = (speed >> 6) & 0xff;
632 buffer[1] = (speed << 2) & 0xff;
633 ret = applesmc_write_key(newkey, buffer, 2);
634
635 mutex_unlock(&applesmc_lock);
636 if (ret)
637 return ret;
638 else
639 return count;
640}
641
642static ssize_t applesmc_show_fan_manual(struct device *dev,
643 struct device_attribute *devattr, char *sysfsbuf)
644{
645 int ret;
646 u16 manual = 0;
647 u8 buffer[2];
648 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
649
650 mutex_lock(&applesmc_lock);
651
652 ret = applesmc_read_key(FANS_MANUAL, buffer, 2);
653 manual = ((buffer[0] << 8 | buffer[1]) >> attr->index) & 0x01;
654
655 mutex_unlock(&applesmc_lock);
656 if (ret)
657 return ret;
658 else
659 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual);
660}
661
662static ssize_t applesmc_store_fan_manual(struct device *dev,
663 struct device_attribute *devattr,
664 const char *sysfsbuf, size_t count)
665{
666 int ret;
667 u8 buffer[2];
668 u32 input;
669 u16 val;
670 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
671
672 input = simple_strtoul(sysfsbuf, NULL, 10);
673
674 mutex_lock(&applesmc_lock);
675
676 ret = applesmc_read_key(FANS_MANUAL, buffer, 2);
677 val = (buffer[0] << 8 | buffer[1]);
678 if (ret)
679 goto out;
680
681 if (input)
682 val = val | (0x01 << attr->index);
683 else
684 val = val & ~(0x01 << attr->index);
685
686 buffer[0] = (val >> 8) & 0xFF;
687 buffer[1] = val & 0xFF;
688
689 ret = applesmc_write_key(FANS_MANUAL, buffer, 2);
690
691out:
692 mutex_unlock(&applesmc_lock);
693 if (ret)
694 return ret;
695 else
696 return count;
697}
698
699static ssize_t applesmc_show_fan_position(struct device *dev,
700 struct device_attribute *attr, char *sysfsbuf)
701{
702 int ret;
703 char newkey[5];
704 u8 buffer[17];
705 struct sensor_device_attribute_2 *sensor_attr =
706 to_sensor_dev_attr_2(attr);
707
708 newkey[0] = FAN_POSITION[0];
709 newkey[1] = '0' + sensor_attr->index;
710 newkey[2] = FAN_POSITION[2];
711 newkey[3] = FAN_POSITION[3];
712 newkey[4] = 0;
713
714 mutex_lock(&applesmc_lock);
715
716 ret = applesmc_read_key(newkey, buffer, 16);
717 buffer[16] = 0;
718
719 mutex_unlock(&applesmc_lock);
720 if (ret)
721 return ret;
722 else
723 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4);
724}
725
726static ssize_t applesmc_calibrate_show(struct device *dev,
727 struct device_attribute *attr, char *sysfsbuf)
728{
729 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y);
730}
731
732static ssize_t applesmc_calibrate_store(struct device *dev,
733 struct device_attribute *attr, const char *sysfsbuf, size_t count)
734{
735 mutex_lock(&applesmc_lock);
736 applesmc_calibrate();
737 mutex_unlock(&applesmc_lock);
738
739 return count;
740}
741
742/* Store the next backlight value to be written by the work */
743static unsigned int backlight_value;
744
745static void applesmc_backlight_set(struct work_struct *work)
746{
747 u8 buffer[2];
748
749 mutex_lock(&applesmc_lock);
750 buffer[0] = backlight_value;
751 buffer[1] = 0x00;
752 applesmc_write_key(BACKLIGHT_KEY, buffer, 2);
753 mutex_unlock(&applesmc_lock);
754}
755static DECLARE_WORK(backlight_work, &applesmc_backlight_set);
756
757static void applesmc_brightness_set(struct led_classdev *led_cdev,
758 enum led_brightness value)
759{
760 int ret;
761
762 backlight_value = value;
763 ret = queue_work(applesmc_led_wq, &backlight_work);
764
765 if (debug && (!ret))
766 printk(KERN_DEBUG "applesmc: work was already on the queue.\n");
767}
768
769static ssize_t applesmc_key_count_show(struct device *dev,
770 struct device_attribute *attr, char *sysfsbuf)
771{
772 int ret;
773 u8 buffer[4];
774 u32 count;
775
776 mutex_lock(&applesmc_lock);
777
778 ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4);
779 count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) +
780 ((u32)buffer[2]<<8) + buffer[3];
781
782 mutex_unlock(&applesmc_lock);
783 if (ret)
784 return ret;
785 else
786 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count);
787}
788
789static ssize_t applesmc_key_at_index_read_show(struct device *dev,
790 struct device_attribute *attr, char *sysfsbuf)
791{
792 char key[5];
793 char info[6];
794 int ret;
795
796 mutex_lock(&applesmc_lock);
797
798 ret = applesmc_get_key_at_index(key_at_index, key);
799
800 if (ret || !key[0]) {
801 mutex_unlock(&applesmc_lock);
802
803 return -EINVAL;
804 }
805
806 ret = applesmc_get_key_type(key, info);
807
808 if (ret) {
809 mutex_unlock(&applesmc_lock);
810
811 return ret;
812 }
813
814 /*
815 * info[0] maximum value (APPLESMC_MAX_DATA_LENGTH) is much lower than
816 * PAGE_SIZE, so we don't need any checks before writing to sysfsbuf.
817 */
818 ret = applesmc_read_key(key, sysfsbuf, info[0]);
819
820 mutex_unlock(&applesmc_lock);
821
822 if (!ret) {
823 return info[0];
824 }
825 else {
826 return ret;
827 }
828}
829
830static ssize_t applesmc_key_at_index_data_length_show(struct device *dev,
831 struct device_attribute *attr, char *sysfsbuf)
832{
833 char key[5];
834 char info[6];
835 int ret;
836
837 mutex_lock(&applesmc_lock);
838
839 ret = applesmc_get_key_at_index(key_at_index, key);
840
841 if (ret || !key[0]) {
842 mutex_unlock(&applesmc_lock);
843
844 return -EINVAL;
845 }
846
847 ret = applesmc_get_key_type(key, info);
848
849 mutex_unlock(&applesmc_lock);
850
851 if (!ret)
852 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", info[0]);
853 else
854 return ret;
855}
856
857static ssize_t applesmc_key_at_index_type_show(struct device *dev,
858 struct device_attribute *attr, char *sysfsbuf)
859{
860 char key[5];
861 char info[6];
862 int ret;
863
864 mutex_lock(&applesmc_lock);
865
866 ret = applesmc_get_key_at_index(key_at_index, key);
867
868 if (ret || !key[0]) {
869 mutex_unlock(&applesmc_lock);
870
871 return -EINVAL;
872 }
873
874 ret = applesmc_get_key_type(key, info);
875
876 mutex_unlock(&applesmc_lock);
877
878 if (!ret)
879 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", info+1);
880 else
881 return ret;
882}
883
884static ssize_t applesmc_key_at_index_name_show(struct device *dev,
885 struct device_attribute *attr, char *sysfsbuf)
886{
887 char key[5];
888 int ret;
889
890 mutex_lock(&applesmc_lock);
891
892 ret = applesmc_get_key_at_index(key_at_index, key);
893
894 mutex_unlock(&applesmc_lock);
895
896 if (!ret && key[0])
897 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key);
898 else
899 return -EINVAL;
900}
901
902static ssize_t applesmc_key_at_index_show(struct device *dev,
903 struct device_attribute *attr, char *sysfsbuf)
904{
905 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index);
906}
907
908static ssize_t applesmc_key_at_index_store(struct device *dev,
909 struct device_attribute *attr, const char *sysfsbuf, size_t count)
910{
911 mutex_lock(&applesmc_lock);
912
913 key_at_index = simple_strtoul(sysfsbuf, NULL, 10);
914
915 mutex_unlock(&applesmc_lock);
916
917 return count;
918}
919
920static struct led_classdev applesmc_backlight = {
921 .name = "smc:kbd_backlight",
922 .default_trigger = "nand-disk",
923 .brightness_set = applesmc_brightness_set,
924};
925
Nicolas Boichatfa744192007-05-23 13:58:13 -0700926static DEVICE_ATTR(name, 0444, applesmc_name_show, NULL);
927
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700928static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL);
929static DEVICE_ATTR(calibrate, 0644,
930 applesmc_calibrate_show, applesmc_calibrate_store);
931
932static struct attribute *accelerometer_attributes[] = {
933 &dev_attr_position.attr,
934 &dev_attr_calibrate.attr,
935 NULL
936};
937
938static const struct attribute_group accelerometer_attributes_group =
939 { .attrs = accelerometer_attributes };
940
941static DEVICE_ATTR(light, 0444, applesmc_light_show, NULL);
942
943static DEVICE_ATTR(key_count, 0444, applesmc_key_count_show, NULL);
944static DEVICE_ATTR(key_at_index, 0644,
945 applesmc_key_at_index_show, applesmc_key_at_index_store);
946static DEVICE_ATTR(key_at_index_name, 0444,
947 applesmc_key_at_index_name_show, NULL);
948static DEVICE_ATTR(key_at_index_type, 0444,
949 applesmc_key_at_index_type_show, NULL);
950static DEVICE_ATTR(key_at_index_data_length, 0444,
951 applesmc_key_at_index_data_length_show, NULL);
952static DEVICE_ATTR(key_at_index_data, 0444,
953 applesmc_key_at_index_read_show, NULL);
954
955static struct attribute *key_enumeration_attributes[] = {
956 &dev_attr_key_count.attr,
957 &dev_attr_key_at_index.attr,
958 &dev_attr_key_at_index_name.attr,
959 &dev_attr_key_at_index_type.attr,
960 &dev_attr_key_at_index_data_length.attr,
961 &dev_attr_key_at_index_data.attr,
962 NULL
963};
964
965static const struct attribute_group key_enumeration_group =
966 { .attrs = key_enumeration_attributes };
967
968/*
969 * Macro defining SENSOR_DEVICE_ATTR for a fan sysfs entries.
970 * - show actual speed
971 * - show/store minimum speed
972 * - show maximum speed
973 * - show safe speed
974 * - show/store target speed
975 * - show/store manual mode
976 */
977#define sysfs_fan_speeds_offset(offset) \
978static SENSOR_DEVICE_ATTR_2(fan##offset##_input, S_IRUGO, \
979 applesmc_show_fan_speed, NULL, 0, offset-1); \
980\
981static SENSOR_DEVICE_ATTR_2(fan##offset##_min, S_IRUGO | S_IWUSR, \
982 applesmc_show_fan_speed, applesmc_store_fan_speed, 1, offset-1); \
983\
984static SENSOR_DEVICE_ATTR_2(fan##offset##_max, S_IRUGO, \
985 applesmc_show_fan_speed, NULL, 2, offset-1); \
986\
987static SENSOR_DEVICE_ATTR_2(fan##offset##_safe, S_IRUGO, \
988 applesmc_show_fan_speed, NULL, 3, offset-1); \
989\
990static SENSOR_DEVICE_ATTR_2(fan##offset##_output, S_IRUGO | S_IWUSR, \
991 applesmc_show_fan_speed, applesmc_store_fan_speed, 4, offset-1); \
992\
993static SENSOR_DEVICE_ATTR(fan##offset##_manual, S_IRUGO | S_IWUSR, \
994 applesmc_show_fan_manual, applesmc_store_fan_manual, offset-1); \
995\
Jean Delvareda4e8ca2007-05-08 20:27:05 -0700996static SENSOR_DEVICE_ATTR(fan##offset##_label, S_IRUGO, \
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700997 applesmc_show_fan_position, NULL, offset-1); \
998\
999static struct attribute *fan##offset##_attributes[] = { \
1000 &sensor_dev_attr_fan##offset##_input.dev_attr.attr, \
1001 &sensor_dev_attr_fan##offset##_min.dev_attr.attr, \
1002 &sensor_dev_attr_fan##offset##_max.dev_attr.attr, \
1003 &sensor_dev_attr_fan##offset##_safe.dev_attr.attr, \
1004 &sensor_dev_attr_fan##offset##_output.dev_attr.attr, \
1005 &sensor_dev_attr_fan##offset##_manual.dev_attr.attr, \
Jean Delvareda4e8ca2007-05-08 20:27:05 -07001006 &sensor_dev_attr_fan##offset##_label.dev_attr.attr, \
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001007 NULL \
1008};
1009
1010/*
1011 * Create the needed functions for each fan using the macro defined above
1012 * (2 fans are supported)
1013 */
1014sysfs_fan_speeds_offset(1);
1015sysfs_fan_speeds_offset(2);
1016
1017static const struct attribute_group fan_attribute_groups[] = {
1018 { .attrs = fan1_attributes },
1019 { .attrs = fan2_attributes }
1020};
1021
1022/*
1023 * Temperature sensors sysfs entries.
1024 */
1025static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
1026 applesmc_show_temperature, NULL, 0);
1027static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO,
1028 applesmc_show_temperature, NULL, 1);
1029static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO,
1030 applesmc_show_temperature, NULL, 2);
1031static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO,
1032 applesmc_show_temperature, NULL, 3);
1033static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO,
1034 applesmc_show_temperature, NULL, 4);
1035static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO,
1036 applesmc_show_temperature, NULL, 5);
1037static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO,
1038 applesmc_show_temperature, NULL, 6);
1039static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO,
1040 applesmc_show_temperature, NULL, 7);
1041static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO,
1042 applesmc_show_temperature, NULL, 8);
1043static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO,
1044 applesmc_show_temperature, NULL, 9);
1045static SENSOR_DEVICE_ATTR(temp11_input, S_IRUGO,
1046 applesmc_show_temperature, NULL, 10);
1047static SENSOR_DEVICE_ATTR(temp12_input, S_IRUGO,
1048 applesmc_show_temperature, NULL, 11);
1049
1050static struct attribute *temperature_attributes[] = {
1051 &sensor_dev_attr_temp1_input.dev_attr.attr,
1052 &sensor_dev_attr_temp2_input.dev_attr.attr,
1053 &sensor_dev_attr_temp3_input.dev_attr.attr,
1054 &sensor_dev_attr_temp4_input.dev_attr.attr,
1055 &sensor_dev_attr_temp5_input.dev_attr.attr,
1056 &sensor_dev_attr_temp6_input.dev_attr.attr,
1057 &sensor_dev_attr_temp7_input.dev_attr.attr,
1058 &sensor_dev_attr_temp8_input.dev_attr.attr,
1059 &sensor_dev_attr_temp9_input.dev_attr.attr,
1060 &sensor_dev_attr_temp10_input.dev_attr.attr,
1061 &sensor_dev_attr_temp11_input.dev_attr.attr,
1062 &sensor_dev_attr_temp12_input.dev_attr.attr,
1063 NULL
1064};
1065
1066static const struct attribute_group temperature_attributes_group =
1067 { .attrs = temperature_attributes };
1068
1069/* Module stuff */
1070
1071/*
1072 * applesmc_dmi_match - found a match. return one, short-circuiting the hunt.
1073 */
1074static int applesmc_dmi_match(struct dmi_system_id *id)
1075{
1076 int i = 0;
1077 struct dmi_match_data* dmi_data = id->driver_data;
1078 printk(KERN_INFO "applesmc: %s detected:\n", id->ident);
1079 applesmc_accelerometer = dmi_data->accelerometer;
1080 printk(KERN_INFO "applesmc: - Model %s accelerometer\n",
1081 applesmc_accelerometer ? "with" : "without");
1082 applesmc_light = dmi_data->light;
1083 printk(KERN_INFO "applesmc: - Model %s light sensors and backlight\n",
1084 applesmc_light ? "with" : "without");
1085
1086 applesmc_temperature_set = dmi_data->temperature_set;
1087 while (temperature_sensors_sets[applesmc_temperature_set][i] != NULL)
1088 i++;
1089 printk(KERN_INFO "applesmc: - Model with %d temperature sensors\n", i);
1090 return 1;
1091}
1092
1093/* Create accelerometer ressources */
1094static int applesmc_create_accelerometer(void)
1095{
1096 int ret;
1097
1098 ret = sysfs_create_group(&pdev->dev.kobj,
1099 &accelerometer_attributes_group);
1100 if (ret)
1101 goto out;
1102
1103 applesmc_idev = input_allocate_device();
1104 if (!applesmc_idev) {
1105 ret = -ENOMEM;
1106 goto out_sysfs;
1107 }
1108
1109 /* initial calibrate for the input device */
1110 applesmc_calibrate();
1111
1112 /* initialize the input class */
1113 applesmc_idev->name = "applesmc";
1114 applesmc_idev->id.bustype = BUS_HOST;
Dmitry Torokhovc5ddb542007-05-10 03:15:47 -07001115 applesmc_idev->dev.parent = &pdev->dev;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001116 applesmc_idev->evbit[0] = BIT(EV_ABS);
1117 applesmc_idev->open = applesmc_idev_open;
1118 applesmc_idev->close = applesmc_idev_close;
1119 input_set_abs_params(applesmc_idev, ABS_X,
1120 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
1121 input_set_abs_params(applesmc_idev, ABS_Y,
1122 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
1123
1124 ret = input_register_device(applesmc_idev);
1125 if (ret)
1126 goto out_idev;
1127
1128 /* start up our timer for the input device */
1129 init_timer(&applesmc_timer);
1130 applesmc_timer.function = applesmc_idev_poll;
1131 applesmc_timer.expires = jiffies + APPLESMC_POLL_PERIOD;
1132
1133 return 0;
1134
1135out_idev:
1136 input_free_device(applesmc_idev);
1137
1138out_sysfs:
1139 sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
1140
1141out:
1142 printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret);
1143 return ret;
1144}
1145
1146/* Release all ressources used by the accelerometer */
1147static void applesmc_release_accelerometer(void)
1148{
1149 del_timer_sync(&applesmc_timer);
1150 input_unregister_device(applesmc_idev);
1151 sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
1152}
1153
1154static __initdata struct dmi_match_data applesmc_dmi_data[] = {
1155/* MacBook Pro: accelerometer, backlight and temperature set 0 */
1156 { .accelerometer = 1, .light = 1, .temperature_set = 0 },
Martin Szulecki1bed24b2007-07-09 11:41:36 -07001157/* MacBook: accelerometer and temperature set 1 */
1158 { .accelerometer = 1, .light = 0, .temperature_set = 1 },
1159/* MacMini: temperature set 2 */
1160 { .accelerometer = 0, .light = 0, .temperature_set = 2 },
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001161};
1162
1163/* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1".
1164 * So we need to put "Apple MacBook Pro" before "Apple MacBook". */
1165static __initdata struct dmi_system_id applesmc_whitelist[] = {
1166 { applesmc_dmi_match, "Apple MacBook Pro", {
1167 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1168 DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro") },
1169 (void*)&applesmc_dmi_data[0]},
1170 { applesmc_dmi_match, "Apple MacBook", {
1171 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1172 DMI_MATCH(DMI_PRODUCT_NAME,"MacBook") },
1173 (void*)&applesmc_dmi_data[1]},
1174 { applesmc_dmi_match, "Apple Macmini", {
1175 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1176 DMI_MATCH(DMI_PRODUCT_NAME,"Macmini") },
1177 (void*)&applesmc_dmi_data[2]},
1178 { .ident = NULL }
1179};
1180
1181static int __init applesmc_init(void)
1182{
1183 int ret;
1184 int count;
1185 int i;
1186
1187 mutex_init(&applesmc_lock);
1188
1189 if (!dmi_check_system(applesmc_whitelist)) {
1190 printk(KERN_WARNING "applesmc: supported laptop not found!\n");
1191 ret = -ENODEV;
1192 goto out;
1193 }
1194
1195 if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS,
1196 "applesmc")) {
1197 ret = -ENXIO;
1198 goto out;
1199 }
1200
1201 ret = platform_driver_register(&applesmc_driver);
1202 if (ret)
1203 goto out_region;
1204
Jean Delvareddfbf2a2007-05-08 20:27:04 -07001205 pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT,
1206 NULL, 0);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001207 if (IS_ERR(pdev)) {
1208 ret = PTR_ERR(pdev);
1209 goto out_driver;
1210 }
1211
Nicolas Boichatfa744192007-05-23 13:58:13 -07001212 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_name.attr);
Nicolas Boichat6996abf2007-05-27 22:17:43 +02001213 if (ret)
1214 goto out_device;
Nicolas Boichatfa744192007-05-23 13:58:13 -07001215
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001216 /* Create key enumeration sysfs files */
1217 ret = sysfs_create_group(&pdev->dev.kobj, &key_enumeration_group);
1218 if (ret)
Nicolas Boichat6996abf2007-05-27 22:17:43 +02001219 goto out_name;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001220
1221 /* create fan files */
1222 count = applesmc_get_fan_count();
1223 if (count < 0) {
1224 printk(KERN_ERR "applesmc: Cannot get the number of fans.\n");
1225 } else {
1226 printk(KERN_INFO "applesmc: %d fans found.\n", count);
1227
1228 switch (count) {
1229 default:
1230 printk(KERN_WARNING "applesmc: More than 2 fans found,"
1231 " but at most 2 fans are supported"
1232 " by the driver.\n");
1233 case 2:
1234 ret = sysfs_create_group(&pdev->dev.kobj,
1235 &fan_attribute_groups[1]);
1236 if (ret)
1237 goto out_key_enumeration;
1238 case 1:
1239 ret = sysfs_create_group(&pdev->dev.kobj,
1240 &fan_attribute_groups[0]);
1241 if (ret)
1242 goto out_fan_1;
1243 case 0:
1244 ;
1245 }
1246 }
1247
1248 for (i = 0;
1249 temperature_sensors_sets[applesmc_temperature_set][i] != NULL;
1250 i++) {
1251 if (temperature_attributes[i] == NULL) {
1252 printk(KERN_ERR "applesmc: More temperature sensors "
1253 "in temperature_sensors_sets (at least %i)"
1254 "than available sysfs files in "
1255 "temperature_attributes (%i), please report "
1256 "this bug.\n", i, i-1);
1257 goto out_temperature;
1258 }
1259 ret = sysfs_create_file(&pdev->dev.kobj,
1260 temperature_attributes[i]);
1261 if (ret)
1262 goto out_temperature;
1263 }
1264
1265 if (applesmc_accelerometer) {
1266 ret = applesmc_create_accelerometer();
1267 if (ret)
1268 goto out_temperature;
1269 }
1270
1271 if (applesmc_light) {
1272 /* Add light sensor file */
1273 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_light.attr);
1274 if (ret)
1275 goto out_accelerometer;
1276
1277 /* Create the workqueue */
1278 applesmc_led_wq = create_singlethread_workqueue("applesmc-led");
1279 if (!applesmc_led_wq) {
1280 ret = -ENOMEM;
1281 goto out_light_sysfs;
1282 }
1283
1284 /* register as a led device */
1285 ret = led_classdev_register(&pdev->dev, &applesmc_backlight);
1286 if (ret < 0)
1287 goto out_light_wq;
1288 }
1289
1290 hwmon_class_dev = hwmon_device_register(&pdev->dev);
1291 if (IS_ERR(hwmon_class_dev)) {
1292 ret = PTR_ERR(hwmon_class_dev);
1293 goto out_light_ledclass;
1294 }
1295
1296 printk(KERN_INFO "applesmc: driver successfully loaded.\n");
1297
1298 return 0;
1299
1300out_light_ledclass:
1301 if (applesmc_light)
1302 led_classdev_unregister(&applesmc_backlight);
1303out_light_wq:
1304 if (applesmc_light)
1305 destroy_workqueue(applesmc_led_wq);
1306out_light_sysfs:
1307 if (applesmc_light)
1308 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
1309out_accelerometer:
1310 if (applesmc_accelerometer)
1311 applesmc_release_accelerometer();
1312out_temperature:
1313 sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
1314 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]);
1315out_fan_1:
1316 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]);
1317out_key_enumeration:
1318 sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
Nicolas Boichat6996abf2007-05-27 22:17:43 +02001319out_name:
1320 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001321out_device:
1322 platform_device_unregister(pdev);
1323out_driver:
1324 platform_driver_unregister(&applesmc_driver);
1325out_region:
1326 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS);
1327out:
1328 printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret);
1329 return ret;
1330}
1331
1332static void __exit applesmc_exit(void)
1333{
1334 hwmon_device_unregister(hwmon_class_dev);
1335 if (applesmc_light) {
1336 led_classdev_unregister(&applesmc_backlight);
1337 destroy_workqueue(applesmc_led_wq);
1338 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
1339 }
1340 if (applesmc_accelerometer)
1341 applesmc_release_accelerometer();
1342 sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
1343 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]);
1344 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]);
1345 sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
Nicolas Boichat6996abf2007-05-27 22:17:43 +02001346 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001347 platform_device_unregister(pdev);
1348 platform_driver_unregister(&applesmc_driver);
1349 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS);
1350
1351 printk(KERN_INFO "applesmc: driver unloaded.\n");
1352}
1353
1354module_init(applesmc_init);
1355module_exit(applesmc_exit);
1356
1357MODULE_AUTHOR("Nicolas Boichat");
1358MODULE_DESCRIPTION("Apple SMC");
1359MODULE_LICENSE("GPL v2");