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x86: make 32bit use irq_cfg_alloc, etc
[deliverable/linux.git] / drivers / hwmon / applesmc.c
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");
Linux kernel - Deliverables
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