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applesmc: support for Intel iMac
[linux-2.6/mini2440.git] / drivers / hwmon / applesmc.c
blob52d842b48fae96d4df2371711043f4ad001b6095
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 };
105
106 /* List of keys used to read/write fan speeds */
107 static const char* fan_speed_keys[] = {
108 FAN_ACTUAL_SPEED,
109 FAN_MIN_SPEED,
110 FAN_MAX_SPEED,
111 FAN_SAFE_SPEED,
112 FAN_TARGET_SPEED
113 };
114
115 #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */
116 #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */
117
118 #define APPLESMC_POLL_INTERVAL 50 /* msecs */
119 #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */
120 #define APPLESMC_INPUT_FLAT 4
121
122 #define SENSOR_X 0
123 #define SENSOR_Y 1
124 #define SENSOR_Z 2
125
126 /* Structure to be passed to DMI_MATCH function */
127 struct dmi_match_data {
128 /* Indicates whether this computer has an accelerometer. */
129 int accelerometer;
130 /* Indicates whether this computer has light sensors and keyboard backlight. */
131 int light;
132 /* Indicates which temperature sensors set to use. */
133 int temperature_set;
134 };
135
136 static const int debug;
137 static struct platform_device *pdev;
138 static s16 rest_x;
139 static s16 rest_y;
140 static struct device *hwmon_dev;
141 static struct input_polled_dev *applesmc_idev;
142
143 /* Indicates whether this computer has an accelerometer. */
144 static unsigned int applesmc_accelerometer;
145
146 /* Indicates whether this computer has light sensors and keyboard backlight. */
147 static unsigned int applesmc_light;
148
149 /* Indicates which temperature sensors set to use. */
150 static unsigned int applesmc_temperature_set;
151
152 static DEFINE_MUTEX(applesmc_lock);
153
154 /*
155 * Last index written to key_at_index sysfs file, and value to use for all other
156 * key_at_index_* sysfs files.
157 */
158 static unsigned int key_at_index;
159
160 static struct workqueue_struct *applesmc_led_wq;
161
162 /*
163 * __wait_status - Wait up to 2ms for the status port to get a certain value
164 * (masked with 0x0f), returning zero if the value is obtained. Callers must
165 * hold applesmc_lock.
166 */
167 static int __wait_status(u8 val)
168 {
169 unsigned int i;
170
171 val = val & APPLESMC_STATUS_MASK;
172
173 for (i = 0; i < 200; i++) {
174 if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) {
175 if (debug)
176 printk(KERN_DEBUG
177 "Waited %d us for status %x\n",
178 i*10, val);
179 return 0;
180 }
181 udelay(10);
182 }
183
184 printk(KERN_WARNING "applesmc: wait status failed: %x != %x\n",
185 val, inb(APPLESMC_CMD_PORT));
186
187 return -EIO;
188 }
189
190 /*
191 * applesmc_read_key - reads len bytes from a given key, and put them in buffer.
192 * Returns zero on success or a negative error on failure. Callers must
193 * hold applesmc_lock.
194 */
195 static int applesmc_read_key(const char* key, u8* buffer, u8 len)
196 {
197 int i;
198
199 if (len > APPLESMC_MAX_DATA_LENGTH) {
200 printk(KERN_ERR "applesmc_read_key: cannot read more than "
201 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH);
202 return -EINVAL;
203 }
204
205 outb(APPLESMC_READ_CMD, APPLESMC_CMD_PORT);
206 if (__wait_status(0x0c))
207 return -EIO;
208
209 for (i = 0; i < 4; i++) {
210 outb(key[i], APPLESMC_DATA_PORT);
211 if (__wait_status(0x04))
212 return -EIO;
213 }
214 if (debug)
215 printk(KERN_DEBUG "<%s", key);
216
217 outb(len, APPLESMC_DATA_PORT);
218 if (debug)
219 printk(KERN_DEBUG ">%x", len);
220
221 for (i = 0; i < len; i++) {
222 if (__wait_status(0x05))
223 return -EIO;
224 buffer[i] = inb(APPLESMC_DATA_PORT);
225 if (debug)
226 printk(KERN_DEBUG "<%x", buffer[i]);
227 }
228 if (debug)
229 printk(KERN_DEBUG "\n");
230
231 return 0;
232 }
233
234 /*
235 * applesmc_write_key - writes len bytes from buffer to a given key.
236 * Returns zero on success or a negative error on failure. Callers must
237 * hold applesmc_lock.
238 */
239 static int applesmc_write_key(const char* key, u8* buffer, u8 len)
240 {
241 int i;
242
243 if (len > APPLESMC_MAX_DATA_LENGTH) {
244 printk(KERN_ERR "applesmc_write_key: cannot write more than "
245 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH);
246 return -EINVAL;
247 }
248
249 outb(APPLESMC_WRITE_CMD, APPLESMC_CMD_PORT);
250 if (__wait_status(0x0c))
251 return -EIO;
252
253 for (i = 0; i < 4; i++) {
254 outb(key[i], APPLESMC_DATA_PORT);
255 if (__wait_status(0x04))
256 return -EIO;
257 }
258
259 outb(len, APPLESMC_DATA_PORT);
260
261 for (i = 0; i < len; i++) {
262 if (__wait_status(0x04))
263 return -EIO;
264 outb(buffer[i], APPLESMC_DATA_PORT);
265 }
266
267 return 0;
268 }
269
270 /*
271 * applesmc_get_key_at_index - get key at index, and put the result in key
272 * (char[6]). Returns zero on success or a negative error on failure. Callers
273 * must hold applesmc_lock.
274 */
275 static int applesmc_get_key_at_index(int index, char* key)
276 {
277 int i;
278 u8 readkey[4];
279 readkey[0] = index >> 24;
280 readkey[1] = index >> 16;
281 readkey[2] = index >> 8;
282 readkey[3] = index;
283
284 outb(APPLESMC_GET_KEY_BY_INDEX_CMD, APPLESMC_CMD_PORT);
285 if (__wait_status(0x0c))
286 return -EIO;
287
288 for (i = 0; i < 4; i++) {
289 outb(readkey[i], APPLESMC_DATA_PORT);
290 if (__wait_status(0x04))
291 return -EIO;
292 }
293
294 outb(4, APPLESMC_DATA_PORT);
295
296 for (i = 0; i < 4; i++) {
297 if (__wait_status(0x05))
298 return -EIO;
299 key[i] = inb(APPLESMC_DATA_PORT);
300 }
301 key[4] = 0;
302
303 return 0;
304 }
305
306 /*
307 * applesmc_get_key_type - get key type, and put the result in type (char[6]).
308 * Returns zero on success or a negative error on failure. Callers must
309 * hold applesmc_lock.
310 */
311 static int applesmc_get_key_type(char* key, char* type)
312 {
313 int i;
314
315 outb(APPLESMC_GET_KEY_TYPE_CMD, APPLESMC_CMD_PORT);
316 if (__wait_status(0x0c))
317 return -EIO;
318
319 for (i = 0; i < 4; i++) {
320 outb(key[i], APPLESMC_DATA_PORT);
321 if (__wait_status(0x04))
322 return -EIO;
323 }
324
325 outb(5, APPLESMC_DATA_PORT);
326
327 for (i = 0; i < 6; i++) {
328 if (__wait_status(0x05))
329 return -EIO;
330 type[i] = inb(APPLESMC_DATA_PORT);
331 }
332 type[5] = 0;
333
334 return 0;
335 }
336
337 /*
338 * applesmc_read_motion_sensor - Read motion sensor (X, Y or Z). Callers must
339 * hold applesmc_lock.
340 */
341 static int applesmc_read_motion_sensor(int index, s16* value)
342 {
343 u8 buffer[2];
344 int ret;
345
346 switch (index) {
347 case SENSOR_X:
348 ret = applesmc_read_key(MOTION_SENSOR_X_KEY, buffer, 2);
349 break;
350 case SENSOR_Y:
351 ret = applesmc_read_key(MOTION_SENSOR_Y_KEY, buffer, 2);
352 break;
353 case SENSOR_Z:
354 ret = applesmc_read_key(MOTION_SENSOR_Z_KEY, buffer, 2);
355 break;
356 default:
357 ret = -EINVAL;
358 }
359
360 *value = ((s16)buffer[0] << 8) | buffer[1];
361
362 return ret;
363 }
364
365 /*
366 * applesmc_device_init - initialize the accelerometer. Returns zero on success
367 * and negative error code on failure. Can sleep.
368 */
369 static int applesmc_device_init(void)
370 {
371 int total, ret = -ENXIO;
372 u8 buffer[2];
373
374 if (!applesmc_accelerometer)
375 return 0;
376
377 mutex_lock(&applesmc_lock);
378
379 for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) {
380 if (debug)
381 printk(KERN_DEBUG "applesmc try %d\n", total);
382 if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) &&
383 (buffer[0] != 0x00 || buffer[1] != 0x00)) {
384 if (total == INIT_TIMEOUT_MSECS) {
385 printk(KERN_DEBUG "applesmc: device has"
386 " already been initialized"
387 " (0x%02x, 0x%02x).\n",
388 buffer[0], buffer[1]);
389 } else {
390 printk(KERN_DEBUG "applesmc: device"
391 " successfully initialized"
392 " (0x%02x, 0x%02x).\n",
393 buffer[0], buffer[1]);
394 }
395 ret = 0;
396 goto out;
397 }
398 buffer[0] = 0xe0;
399 buffer[1] = 0x00;
400 applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2);
401 msleep(INIT_WAIT_MSECS);
402 }
403
404 printk(KERN_WARNING "applesmc: failed to init the device\n");
405
406 out:
407 mutex_unlock(&applesmc_lock);
408 return ret;
409 }
410
411 /*
412 * applesmc_get_fan_count - get the number of fans. Callers must NOT hold
413 * applesmc_lock.
414 */
415 static int applesmc_get_fan_count(void)
416 {
417 int ret;
418 u8 buffer[1];
419
420 mutex_lock(&applesmc_lock);
421
422 ret = applesmc_read_key(FANS_COUNT, buffer, 1);
423
424 mutex_unlock(&applesmc_lock);
425 if (ret)
426 return ret;
427 else
428 return buffer[0];
429 }
430
431 /* Device model stuff */
432 static int applesmc_probe(struct platform_device *dev)
433 {
434 int ret;
435
436 ret = applesmc_device_init();
437 if (ret)
438 return ret;
439
440 printk(KERN_INFO "applesmc: device successfully initialized.\n");
441 return 0;
442 }
443
444 static int applesmc_resume(struct platform_device *dev)
445 {
446 return applesmc_device_init();
447 }
448
449 static struct platform_driver applesmc_driver = {
450 .probe = applesmc_probe,
451 .resume = applesmc_resume,
452 .driver = {
453 .name = "applesmc",
454 .owner = THIS_MODULE,
455 },
456 };
457
458 /*
459 * applesmc_calibrate - Set our "resting" values. Callers must
460 * hold applesmc_lock.
461 */
462 static void applesmc_calibrate(void)
463 {
464 applesmc_read_motion_sensor(SENSOR_X, &rest_x);
465 applesmc_read_motion_sensor(SENSOR_Y, &rest_y);
466 rest_x = -rest_x;
467 }
468
469 static void applesmc_idev_poll(struct input_polled_dev *dev)
470 {
471 struct input_dev *idev = dev->input;
472 s16 x, y;
473
474 mutex_lock(&applesmc_lock);
475
476 if (applesmc_read_motion_sensor(SENSOR_X, &x))
477 goto out;
478 if (applesmc_read_motion_sensor(SENSOR_Y, &y))
479 goto out;
480
481 x = -x;
482 input_report_abs(idev, ABS_X, x - rest_x);
483 input_report_abs(idev, ABS_Y, y - rest_y);
484 input_sync(idev);
485
486 out:
487 mutex_unlock(&applesmc_lock);
488 }
489
490 /* Sysfs Files */
491
492 static ssize_t applesmc_name_show(struct device *dev,
493 struct device_attribute *attr, char *buf)
494 {
495 return snprintf(buf, PAGE_SIZE, "applesmc\n");
496 }
497
498 static ssize_t applesmc_position_show(struct device *dev,
499 struct device_attribute *attr, char *buf)
500 {
501 int ret;
502 s16 x, y, z;
503
504 mutex_lock(&applesmc_lock);
505
506 ret = applesmc_read_motion_sensor(SENSOR_X, &x);
507 if (ret)
508 goto out;
509 ret = applesmc_read_motion_sensor(SENSOR_Y, &y);
510 if (ret)
511 goto out;
512 ret = applesmc_read_motion_sensor(SENSOR_Z, &z);
513 if (ret)
514 goto out;
515
516 out:
517 mutex_unlock(&applesmc_lock);
518 if (ret)
519 return ret;
520 else
521 return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z);
522 }
523
524 static ssize_t applesmc_light_show(struct device *dev,
525 struct device_attribute *attr, char *sysfsbuf)
526 {
527 int ret;
528 u8 left = 0, right = 0;
529 u8 buffer[6];
530
531 mutex_lock(&applesmc_lock);
532
533 ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, 6);
534 left = buffer[2];
535 if (ret)
536 goto out;
537 ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, 6);
538 right = buffer[2];
539
540 out:
541 mutex_unlock(&applesmc_lock);
542 if (ret)
543 return ret;
544 else
545 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right);
546 }
547
548 /* Displays degree Celsius * 1000 */
549 static ssize_t applesmc_show_temperature(struct device *dev,
550 struct device_attribute *devattr, char *sysfsbuf)
551 {
552 int ret;
553 u8 buffer[2];
554 unsigned int temp;
555 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
556 const char* key =
557 temperature_sensors_sets[applesmc_temperature_set][attr->index];
558
559 mutex_lock(&applesmc_lock);
560
561 ret = applesmc_read_key(key, buffer, 2);
562 temp = buffer[0]*1000;
563 temp += (buffer[1] >> 6) * 250;
564
565 mutex_unlock(&applesmc_lock);
566
567 if (ret)
568 return ret;
569 else
570 return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp);
571 }
572
573 static ssize_t applesmc_show_fan_speed(struct device *dev,
574 struct device_attribute *attr, char *sysfsbuf)
575 {
576 int ret;
577 unsigned int speed = 0;
578 char newkey[5];
579 u8 buffer[2];
580 struct sensor_device_attribute_2 *sensor_attr =
581 to_sensor_dev_attr_2(attr);
582
583 newkey[0] = fan_speed_keys[sensor_attr->nr][0];
584 newkey[1] = '0' + sensor_attr->index;
585 newkey[2] = fan_speed_keys[sensor_attr->nr][2];
586 newkey[3] = fan_speed_keys[sensor_attr->nr][3];
587 newkey[4] = 0;
588
589 mutex_lock(&applesmc_lock);
590
591 ret = applesmc_read_key(newkey, buffer, 2);
592 speed = ((buffer[0] << 8 | buffer[1]) >> 2);
593
594 mutex_unlock(&applesmc_lock);
595 if (ret)
596 return ret;
597 else
598 return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed);
599 }
600
601 static ssize_t applesmc_store_fan_speed(struct device *dev,
602 struct device_attribute *attr,
603 const char *sysfsbuf, size_t count)
604 {
605 int ret;
606 u32 speed;
607 char newkey[5];
608 u8 buffer[2];
609 struct sensor_device_attribute_2 *sensor_attr =
610 to_sensor_dev_attr_2(attr);
611
612 speed = simple_strtoul(sysfsbuf, NULL, 10);
613
614 if (speed > 0x4000) /* Bigger than a 14-bit value */
615 return -EINVAL;
616
617 newkey[0] = fan_speed_keys[sensor_attr->nr][0];
618 newkey[1] = '0' + sensor_attr->index;
619 newkey[2] = fan_speed_keys[sensor_attr->nr][2];
620 newkey[3] = fan_speed_keys[sensor_attr->nr][3];
621 newkey[4] = 0;
622
623 mutex_lock(&applesmc_lock);
624
625 buffer[0] = (speed >> 6) & 0xff;
626 buffer[1] = (speed << 2) & 0xff;
627 ret = applesmc_write_key(newkey, buffer, 2);
628
629 mutex_unlock(&applesmc_lock);
630 if (ret)
631 return ret;
632 else
633 return count;
634 }
635
636 static ssize_t applesmc_show_fan_manual(struct device *dev,
637 struct device_attribute *devattr, char *sysfsbuf)
638 {
639 int ret;
640 u16 manual = 0;
641 u8 buffer[2];
642 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
643
644 mutex_lock(&applesmc_lock);
645
646 ret = applesmc_read_key(FANS_MANUAL, buffer, 2);
647 manual = ((buffer[0] << 8 | buffer[1]) >> attr->index) & 0x01;
648
649 mutex_unlock(&applesmc_lock);
650 if (ret)
651 return ret;
652 else
653 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual);
654 }
655
656 static ssize_t applesmc_store_fan_manual(struct device *dev,
657 struct device_attribute *devattr,
658 const char *sysfsbuf, size_t count)
659 {
660 int ret;
661 u8 buffer[2];
662 u32 input;
663 u16 val;
664 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
665
666 input = simple_strtoul(sysfsbuf, NULL, 10);
667
668 mutex_lock(&applesmc_lock);
669
670 ret = applesmc_read_key(FANS_MANUAL, buffer, 2);
671 val = (buffer[0] << 8 | buffer[1]);
672 if (ret)
673 goto out;
674
675 if (input)
676 val = val | (0x01 << attr->index);
677 else
678 val = val & ~(0x01 << attr->index);
679
680 buffer[0] = (val >> 8) & 0xFF;
681 buffer[1] = val & 0xFF;
682
683 ret = applesmc_write_key(FANS_MANUAL, buffer, 2);
684
685 out:
686 mutex_unlock(&applesmc_lock);
687 if (ret)
688 return ret;
689 else
690 return count;
691 }
692
693 static ssize_t applesmc_show_fan_position(struct device *dev,
694 struct device_attribute *attr, char *sysfsbuf)
695 {
696 int ret;
697 char newkey[5];
698 u8 buffer[17];
699 struct sensor_device_attribute_2 *sensor_attr =
700 to_sensor_dev_attr_2(attr);
701
702 newkey[0] = FAN_POSITION[0];
703 newkey[1] = '0' + sensor_attr->index;
704 newkey[2] = FAN_POSITION[2];
705 newkey[3] = FAN_POSITION[3];
706 newkey[4] = 0;
707
708 mutex_lock(&applesmc_lock);
709
710 ret = applesmc_read_key(newkey, buffer, 16);
711 buffer[16] = 0;
712
713 mutex_unlock(&applesmc_lock);
714 if (ret)
715 return ret;
716 else
717 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4);
718 }
719
720 static ssize_t applesmc_calibrate_show(struct device *dev,
721 struct device_attribute *attr, char *sysfsbuf)
722 {
723 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y);
724 }
725
726 static ssize_t applesmc_calibrate_store(struct device *dev,
727 struct device_attribute *attr, const char *sysfsbuf, size_t count)
728 {
729 mutex_lock(&applesmc_lock);
730 applesmc_calibrate();
731 mutex_unlock(&applesmc_lock);
732
733 return count;
734 }
735
736 /* Store the next backlight value to be written by the work */
737 static unsigned int backlight_value;
738
739 static void applesmc_backlight_set(struct work_struct *work)
740 {
741 u8 buffer[2];
742
743 mutex_lock(&applesmc_lock);
744 buffer[0] = backlight_value;
745 buffer[1] = 0x00;
746 applesmc_write_key(BACKLIGHT_KEY, buffer, 2);
747 mutex_unlock(&applesmc_lock);
748 }
749 static DECLARE_WORK(backlight_work, &applesmc_backlight_set);
750
751 static void applesmc_brightness_set(struct led_classdev *led_cdev,
752 enum led_brightness value)
753 {
754 int ret;
755
756 backlight_value = value;
757 ret = queue_work(applesmc_led_wq, &backlight_work);
758
759 if (debug && (!ret))
760 printk(KERN_DEBUG "applesmc: work was already on the queue.\n");
761 }
762
763 static ssize_t applesmc_key_count_show(struct device *dev,
764 struct device_attribute *attr, char *sysfsbuf)
765 {
766 int ret;
767 u8 buffer[4];
768 u32 count;
769
770 mutex_lock(&applesmc_lock);
771
772 ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4);
773 count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) +
774 ((u32)buffer[2]<<8) + buffer[3];
775
776 mutex_unlock(&applesmc_lock);
777 if (ret)
778 return ret;
779 else
780 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count);
781 }
782
783 static ssize_t applesmc_key_at_index_read_show(struct device *dev,
784 struct device_attribute *attr, char *sysfsbuf)
785 {
786 char key[5];
787 char info[6];
788 int ret;
789
790 mutex_lock(&applesmc_lock);
791
792 ret = applesmc_get_key_at_index(key_at_index, key);
793
794 if (ret || !key[0]) {
795 mutex_unlock(&applesmc_lock);
796
797 return -EINVAL;
798 }
799
800 ret = applesmc_get_key_type(key, info);
801
802 if (ret) {
803 mutex_unlock(&applesmc_lock);
804
805 return ret;
806 }
807
808 /*
809 * info[0] maximum value (APPLESMC_MAX_DATA_LENGTH) is much lower than
810 * PAGE_SIZE, so we don't need any checks before writing to sysfsbuf.
811 */
812 ret = applesmc_read_key(key, sysfsbuf, info[0]);
813
814 mutex_unlock(&applesmc_lock);
815
816 if (!ret) {
817 return info[0];
818 } else {
819 return ret;
820 }
821 }
822
823 static ssize_t applesmc_key_at_index_data_length_show(struct device *dev,
824 struct device_attribute *attr, char *sysfsbuf)
825 {
826 char key[5];
827 char info[6];
828 int ret;
829
830 mutex_lock(&applesmc_lock);
831
832 ret = applesmc_get_key_at_index(key_at_index, key);
833
834 if (ret || !key[0]) {
835 mutex_unlock(&applesmc_lock);
836
837 return -EINVAL;
838 }
839
840 ret = applesmc_get_key_type(key, info);
841
842 mutex_unlock(&applesmc_lock);
843
844 if (!ret)
845 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", info[0]);
846 else
847 return ret;
848 }
849
850 static ssize_t applesmc_key_at_index_type_show(struct device *dev,
851 struct device_attribute *attr, char *sysfsbuf)
852 {
853 char key[5];
854 char info[6];
855 int ret;
856
857 mutex_lock(&applesmc_lock);
858
859 ret = applesmc_get_key_at_index(key_at_index, key);
860
861 if (ret || !key[0]) {
862 mutex_unlock(&applesmc_lock);
863
864 return -EINVAL;
865 }
866
867 ret = applesmc_get_key_type(key, info);
868
869 mutex_unlock(&applesmc_lock);
870
871 if (!ret)
872 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", info+1);
873 else
874 return ret;
875 }
876
877 static ssize_t applesmc_key_at_index_name_show(struct device *dev,
878 struct device_attribute *attr, char *sysfsbuf)
879 {
880 char key[5];
881 int ret;
882
883 mutex_lock(&applesmc_lock);
884
885 ret = applesmc_get_key_at_index(key_at_index, key);
886
887 mutex_unlock(&applesmc_lock);
888
889 if (!ret && key[0])
890 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key);
891 else
892 return -EINVAL;
893 }
894
895 static ssize_t applesmc_key_at_index_show(struct device *dev,
896 struct device_attribute *attr, char *sysfsbuf)
897 {
898 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index);
899 }
900
901 static ssize_t applesmc_key_at_index_store(struct device *dev,
902 struct device_attribute *attr, const char *sysfsbuf, size_t count)
903 {
904 mutex_lock(&applesmc_lock);
905
906 key_at_index = simple_strtoul(sysfsbuf, NULL, 10);
907
908 mutex_unlock(&applesmc_lock);
909
910 return count;
911 }
912
913 static struct led_classdev applesmc_backlight = {
914 .name = "smc::kbd_backlight",
915 .default_trigger = "nand-disk",
916 .brightness_set = applesmc_brightness_set,
917 };
918
919 static DEVICE_ATTR(name, 0444, applesmc_name_show, NULL);
920
921 static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL);
922 static DEVICE_ATTR(calibrate, 0644,
923 applesmc_calibrate_show, applesmc_calibrate_store);
924
925 static struct attribute *accelerometer_attributes[] = {
926 &dev_attr_position.attr,
927 &dev_attr_calibrate.attr,
928 NULL
929 };
930
931 static const struct attribute_group accelerometer_attributes_group =
932 { .attrs = accelerometer_attributes };
933
934 static DEVICE_ATTR(light, 0444, applesmc_light_show, NULL);
935
936 static DEVICE_ATTR(key_count, 0444, applesmc_key_count_show, NULL);
937 static DEVICE_ATTR(key_at_index, 0644,
938 applesmc_key_at_index_show, applesmc_key_at_index_store);
939 static DEVICE_ATTR(key_at_index_name, 0444,
940 applesmc_key_at_index_name_show, NULL);
941 static DEVICE_ATTR(key_at_index_type, 0444,
942 applesmc_key_at_index_type_show, NULL);
943 static DEVICE_ATTR(key_at_index_data_length, 0444,
944 applesmc_key_at_index_data_length_show, NULL);
945 static DEVICE_ATTR(key_at_index_data, 0444,
946 applesmc_key_at_index_read_show, NULL);
947
948 static struct attribute *key_enumeration_attributes[] = {
949 &dev_attr_key_count.attr,
950 &dev_attr_key_at_index.attr,
951 &dev_attr_key_at_index_name.attr,
952 &dev_attr_key_at_index_type.attr,
953 &dev_attr_key_at_index_data_length.attr,
954 &dev_attr_key_at_index_data.attr,
955 NULL
956 };
957
958 static const struct attribute_group key_enumeration_group =
959 { .attrs = key_enumeration_attributes };
960
961 /*
962 * Macro defining SENSOR_DEVICE_ATTR for a fan sysfs entries.
963 * - show actual speed
964 * - show/store minimum speed
965 * - show maximum speed
966 * - show safe speed
967 * - show/store target speed
968 * - show/store manual mode
969 */
970 #define sysfs_fan_speeds_offset(offset) \
971 static SENSOR_DEVICE_ATTR_2(fan##offset##_input, S_IRUGO, \
972 applesmc_show_fan_speed, NULL, 0, offset-1); \
973 \
974 static SENSOR_DEVICE_ATTR_2(fan##offset##_min, S_IRUGO | S_IWUSR, \
975 applesmc_show_fan_speed, applesmc_store_fan_speed, 1, offset-1); \
976 \
977 static SENSOR_DEVICE_ATTR_2(fan##offset##_max, S_IRUGO, \
978 applesmc_show_fan_speed, NULL, 2, offset-1); \
979 \
980 static SENSOR_DEVICE_ATTR_2(fan##offset##_safe, S_IRUGO, \
981 applesmc_show_fan_speed, NULL, 3, offset-1); \
982 \
983 static SENSOR_DEVICE_ATTR_2(fan##offset##_output, S_IRUGO | S_IWUSR, \
984 applesmc_show_fan_speed, applesmc_store_fan_speed, 4, offset-1); \
985 \
986 static SENSOR_DEVICE_ATTR(fan##offset##_manual, S_IRUGO | S_IWUSR, \
987 applesmc_show_fan_manual, applesmc_store_fan_manual, offset-1); \
988 \
989 static SENSOR_DEVICE_ATTR(fan##offset##_label, S_IRUGO, \
990 applesmc_show_fan_position, NULL, offset-1); \
991 \
992 static struct attribute *fan##offset##_attributes[] = { \
993 &sensor_dev_attr_fan##offset##_input.dev_attr.attr, \
994 &sensor_dev_attr_fan##offset##_min.dev_attr.attr, \
995 &sensor_dev_attr_fan##offset##_max.dev_attr.attr, \
996 &sensor_dev_attr_fan##offset##_safe.dev_attr.attr, \
997 &sensor_dev_attr_fan##offset##_output.dev_attr.attr, \
998 &sensor_dev_attr_fan##offset##_manual.dev_attr.attr, \
999 &sensor_dev_attr_fan##offset##_label.dev_attr.attr, \
1000 NULL \
1001 };
1002
1003 /*
1004 * Create the needed functions for each fan using the macro defined above
1005 * (4 fans are supported)
1006 */
1007 sysfs_fan_speeds_offset(1);
1008 sysfs_fan_speeds_offset(2);
1009 sysfs_fan_speeds_offset(3);
1010 sysfs_fan_speeds_offset(4);
1011
1012 static const struct attribute_group fan_attribute_groups[] = {
1013 { .attrs = fan1_attributes },
1014 { .attrs = fan2_attributes },
1015 { .attrs = fan3_attributes },
1016 { .attrs = fan4_attributes },
1017 };
1018
1019 /*
1020 * Temperature sensors sysfs entries.
1021 */
1022 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
1023 applesmc_show_temperature, NULL, 0);
1024 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO,
1025 applesmc_show_temperature, NULL, 1);
1026 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO,
1027 applesmc_show_temperature, NULL, 2);
1028 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO,
1029 applesmc_show_temperature, NULL, 3);
1030 static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO,
1031 applesmc_show_temperature, NULL, 4);
1032 static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO,
1033 applesmc_show_temperature, NULL, 5);
1034 static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO,
1035 applesmc_show_temperature, NULL, 6);
1036 static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO,
1037 applesmc_show_temperature, NULL, 7);
1038 static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO,
1039 applesmc_show_temperature, NULL, 8);
1040 static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO,
1041 applesmc_show_temperature, NULL, 9);
1042 static SENSOR_DEVICE_ATTR(temp11_input, S_IRUGO,
1043 applesmc_show_temperature, NULL, 10);
1044 static SENSOR_DEVICE_ATTR(temp12_input, S_IRUGO,
1045 applesmc_show_temperature, NULL, 11);
1046 static SENSOR_DEVICE_ATTR(temp13_input, S_IRUGO,
1047 applesmc_show_temperature, NULL, 12);
1048 static SENSOR_DEVICE_ATTR(temp14_input, S_IRUGO,
1049 applesmc_show_temperature, NULL, 13);
1050 static SENSOR_DEVICE_ATTR(temp15_input, S_IRUGO,
1051 applesmc_show_temperature, NULL, 14);
1052 static SENSOR_DEVICE_ATTR(temp16_input, S_IRUGO,
1053 applesmc_show_temperature, NULL, 15);
1054 static SENSOR_DEVICE_ATTR(temp17_input, S_IRUGO,
1055 applesmc_show_temperature, NULL, 16);
1056 static SENSOR_DEVICE_ATTR(temp18_input, S_IRUGO,
1057 applesmc_show_temperature, NULL, 17);
1058 static SENSOR_DEVICE_ATTR(temp19_input, S_IRUGO,
1059 applesmc_show_temperature, NULL, 18);
1060 static SENSOR_DEVICE_ATTR(temp20_input, S_IRUGO,
1061 applesmc_show_temperature, NULL, 19);
1062 static SENSOR_DEVICE_ATTR(temp21_input, S_IRUGO,
1063 applesmc_show_temperature, NULL, 20);
1064 static SENSOR_DEVICE_ATTR(temp22_input, S_IRUGO,
1065 applesmc_show_temperature, NULL, 21);
1066 static SENSOR_DEVICE_ATTR(temp23_input, S_IRUGO,
1067 applesmc_show_temperature, NULL, 22);
1068 static SENSOR_DEVICE_ATTR(temp24_input, S_IRUGO,
1069 applesmc_show_temperature, NULL, 23);
1070 static SENSOR_DEVICE_ATTR(temp25_input, S_IRUGO,
1071 applesmc_show_temperature, NULL, 24);
1072 static SENSOR_DEVICE_ATTR(temp26_input, S_IRUGO,
1073 applesmc_show_temperature, NULL, 25);
1074 static SENSOR_DEVICE_ATTR(temp27_input, S_IRUGO,
1075 applesmc_show_temperature, NULL, 26);
1076 static SENSOR_DEVICE_ATTR(temp28_input, S_IRUGO,
1077 applesmc_show_temperature, NULL, 27);
1078 static SENSOR_DEVICE_ATTR(temp29_input, S_IRUGO,
1079 applesmc_show_temperature, NULL, 28);
1080 static SENSOR_DEVICE_ATTR(temp30_input, S_IRUGO,
1081 applesmc_show_temperature, NULL, 29);
1082 static SENSOR_DEVICE_ATTR(temp31_input, S_IRUGO,
1083 applesmc_show_temperature, NULL, 30);
1084 static SENSOR_DEVICE_ATTR(temp32_input, S_IRUGO,
1085 applesmc_show_temperature, NULL, 31);
1086 static SENSOR_DEVICE_ATTR(temp33_input, S_IRUGO,
1087 applesmc_show_temperature, NULL, 32);
1088 static SENSOR_DEVICE_ATTR(temp34_input, S_IRUGO,
1089 applesmc_show_temperature, NULL, 33);
1090 static SENSOR_DEVICE_ATTR(temp35_input, S_IRUGO,
1091 applesmc_show_temperature, NULL, 34);
1092
1093 static struct attribute *temperature_attributes[] = {
1094 &sensor_dev_attr_temp1_input.dev_attr.attr,
1095 &sensor_dev_attr_temp2_input.dev_attr.attr,
1096 &sensor_dev_attr_temp3_input.dev_attr.attr,
1097 &sensor_dev_attr_temp4_input.dev_attr.attr,
1098 &sensor_dev_attr_temp5_input.dev_attr.attr,
1099 &sensor_dev_attr_temp6_input.dev_attr.attr,
1100 &sensor_dev_attr_temp7_input.dev_attr.attr,
1101 &sensor_dev_attr_temp8_input.dev_attr.attr,
1102 &sensor_dev_attr_temp9_input.dev_attr.attr,
1103 &sensor_dev_attr_temp10_input.dev_attr.attr,
1104 &sensor_dev_attr_temp11_input.dev_attr.attr,
1105 &sensor_dev_attr_temp12_input.dev_attr.attr,
1106 &sensor_dev_attr_temp13_input.dev_attr.attr,
1107 &sensor_dev_attr_temp14_input.dev_attr.attr,
1108 &sensor_dev_attr_temp15_input.dev_attr.attr,
1109 &sensor_dev_attr_temp16_input.dev_attr.attr,
1110 &sensor_dev_attr_temp17_input.dev_attr.attr,
1111 &sensor_dev_attr_temp18_input.dev_attr.attr,
1112 &sensor_dev_attr_temp19_input.dev_attr.attr,
1113 &sensor_dev_attr_temp20_input.dev_attr.attr,
1114 &sensor_dev_attr_temp21_input.dev_attr.attr,
1115 &sensor_dev_attr_temp22_input.dev_attr.attr,
1116 &sensor_dev_attr_temp23_input.dev_attr.attr,
1117 &sensor_dev_attr_temp24_input.dev_attr.attr,
1118 &sensor_dev_attr_temp25_input.dev_attr.attr,
1119 &sensor_dev_attr_temp26_input.dev_attr.attr,
1120 &sensor_dev_attr_temp27_input.dev_attr.attr,
1121 &sensor_dev_attr_temp28_input.dev_attr.attr,
1122 &sensor_dev_attr_temp29_input.dev_attr.attr,
1123 &sensor_dev_attr_temp30_input.dev_attr.attr,
1124 &sensor_dev_attr_temp31_input.dev_attr.attr,
1125 &sensor_dev_attr_temp32_input.dev_attr.attr,
1126 &sensor_dev_attr_temp33_input.dev_attr.attr,
1127 &sensor_dev_attr_temp34_input.dev_attr.attr,
1128 &sensor_dev_attr_temp35_input.dev_attr.attr,
1129 NULL
1130 };
1131
1132 static const struct attribute_group temperature_attributes_group =
1133 { .attrs = temperature_attributes };
1134
1135 /* Module stuff */
1136
1137 /*
1138 * applesmc_dmi_match - found a match. return one, short-circuiting the hunt.
1139 */
1140 static int applesmc_dmi_match(const struct dmi_system_id *id)
1141 {
1142 int i = 0;
1143 struct dmi_match_data* dmi_data = id->driver_data;
1144 printk(KERN_INFO "applesmc: %s detected:\n", id->ident);
1145 applesmc_accelerometer = dmi_data->accelerometer;
1146 printk(KERN_INFO "applesmc: - Model %s accelerometer\n",
1147 applesmc_accelerometer ? "with" : "without");
1148 applesmc_light = dmi_data->light;
1149 printk(KERN_INFO "applesmc: - Model %s light sensors and backlight\n",
1150 applesmc_light ? "with" : "without");
1151
1152 applesmc_temperature_set = dmi_data->temperature_set;
1153 while (temperature_sensors_sets[applesmc_temperature_set][i] != NULL)
1154 i++;
1155 printk(KERN_INFO "applesmc: - Model with %d temperature sensors\n", i);
1156 return 1;
1157 }
1158
1159 /* Create accelerometer ressources */
1160 static int applesmc_create_accelerometer(void)
1161 {
1162 struct input_dev *idev;
1163 int ret;
1164
1165 ret = sysfs_create_group(&pdev->dev.kobj,
1166 &accelerometer_attributes_group);
1167 if (ret)
1168 goto out;
1169
1170 applesmc_idev = input_allocate_polled_device();
1171 if (!applesmc_idev) {
1172 ret = -ENOMEM;
1173 goto out_sysfs;
1174 }
1175
1176 applesmc_idev->poll = applesmc_idev_poll;
1177 applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL;
1178
1179 /* initial calibrate for the input device */
1180 applesmc_calibrate();
1181
1182 /* initialize the input device */
1183 idev = applesmc_idev->input;
1184 idev->name = "applesmc";
1185 idev->id.bustype = BUS_HOST;
1186 idev->dev.parent = &pdev->dev;
1187 idev->evbit[0] = BIT_MASK(EV_ABS);
1188 input_set_abs_params(idev, ABS_X,
1189 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
1190 input_set_abs_params(idev, ABS_Y,
1191 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
1192
1193 ret = input_register_polled_device(applesmc_idev);
1194 if (ret)
1195 goto out_idev;
1196
1197 return 0;
1198
1199 out_idev:
1200 input_free_polled_device(applesmc_idev);
1201
1202 out_sysfs:
1203 sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
1204
1205 out:
1206 printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret);
1207 return ret;
1208 }
1209
1210 /* Release all ressources used by the accelerometer */
1211 static void applesmc_release_accelerometer(void)
1212 {
1213 input_unregister_polled_device(applesmc_idev);
1214 input_free_polled_device(applesmc_idev);
1215 sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
1216 }
1217
1218 static __initdata struct dmi_match_data applesmc_dmi_data[] = {
1219 /* MacBook Pro: accelerometer, backlight and temperature set 0 */
1220 { .accelerometer = 1, .light = 1, .temperature_set = 0 },
1221 /* MacBook2: accelerometer and temperature set 1 */
1222 { .accelerometer = 1, .light = 0, .temperature_set = 1 },
1223 /* MacBook: accelerometer and temperature set 2 */
1224 { .accelerometer = 1, .light = 0, .temperature_set = 2 },
1225 /* MacMini: temperature set 3 */
1226 { .accelerometer = 0, .light = 0, .temperature_set = 3 },
1227 /* MacPro: temperature set 4 */
1228 { .accelerometer = 0, .light = 0, .temperature_set = 4 },
1229 /* iMac: temperature set 5 */
1230 { .accelerometer = 0, .light = 0, .temperature_set = 5 },
1231 };
1232
1233 /* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1".
1234 * So we need to put "Apple MacBook Pro" before "Apple MacBook". */
1235 static __initdata struct dmi_system_id applesmc_whitelist[] = {
1236 { applesmc_dmi_match, "Apple MacBook Pro", {
1237 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1238 DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro") },
1239 (void*)&applesmc_dmi_data[0]},
1240 { applesmc_dmi_match, "Apple MacBook", {
1241 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1242 DMI_MATCH(DMI_PRODUCT_NAME,"MacBook2") },
1243 (void*)&applesmc_dmi_data[1]},
1244 { applesmc_dmi_match, "Apple MacBook", {
1245 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1246 DMI_MATCH(DMI_PRODUCT_NAME,"MacBook") },
1247 (void*)&applesmc_dmi_data[2]},
1248 { applesmc_dmi_match, "Apple Macmini", {
1249 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1250 DMI_MATCH(DMI_PRODUCT_NAME,"Macmini") },
1251 (void*)&applesmc_dmi_data[3]},
1252 { applesmc_dmi_match, "Apple MacPro2", {
1253 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1254 DMI_MATCH(DMI_PRODUCT_NAME,"MacPro2") },
1255 (void*)&applesmc_dmi_data[4]},
1256 { applesmc_dmi_match, "Apple iMac", {
1257 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1258 DMI_MATCH(DMI_PRODUCT_NAME,"iMac") },
1259 (void*)&applesmc_dmi_data[5]},
1260 { .ident = NULL }
1261 };
1262
1263 static int __init applesmc_init(void)
1264 {
1265 int ret;
1266 int count;
1267 int i;
1268
1269 if (!dmi_check_system(applesmc_whitelist)) {
1270 printk(KERN_WARNING "applesmc: supported laptop not found!\n");
1271 ret = -ENODEV;
1272 goto out;
1273 }
1274
1275 if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS,
1276 "applesmc")) {
1277 ret = -ENXIO;
1278 goto out;
1279 }
1280
1281 ret = platform_driver_register(&applesmc_driver);
1282 if (ret)
1283 goto out_region;
1284
1285 pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT,
1286 NULL, 0);
1287 if (IS_ERR(pdev)) {
1288 ret = PTR_ERR(pdev);
1289 goto out_driver;
1290 }
1291
1292 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_name.attr);
1293 if (ret)
1294 goto out_device;
1295
1296 /* Create key enumeration sysfs files */
1297 ret = sysfs_create_group(&pdev->dev.kobj, &key_enumeration_group);
1298 if (ret)
1299 goto out_name;
1300
1301 /* create fan files */
1302 count = applesmc_get_fan_count();
1303 if (count < 0) {
1304 printk(KERN_ERR "applesmc: Cannot get the number of fans.\n");
1305 } else {
1306 printk(KERN_INFO "applesmc: %d fans found.\n", count);
1307
1308 switch (count) {
1309 default:
1310 printk(KERN_WARNING "applesmc: More than 4 fans found,"
1311 " but at most 4 fans are supported"
1312 " by the driver.\n");
1313 case 4:
1314 ret = sysfs_create_group(&pdev->dev.kobj,
1315 &fan_attribute_groups[3]);
1316 if (ret)
1317 goto out_key_enumeration;
1318 case 3:
1319 ret = sysfs_create_group(&pdev->dev.kobj,
1320 &fan_attribute_groups[2]);
1321 if (ret)
1322 goto out_key_enumeration;
1323 case 2:
1324 ret = sysfs_create_group(&pdev->dev.kobj,
1325 &fan_attribute_groups[1]);
1326 if (ret)
1327 goto out_key_enumeration;
1328 case 1:
1329 ret = sysfs_create_group(&pdev->dev.kobj,
1330 &fan_attribute_groups[0]);
1331 if (ret)
1332 goto out_fan_1;
1333 case 0:
1334 ;
1335 }
1336 }
1337
1338 for (i = 0;
1339 temperature_sensors_sets[applesmc_temperature_set][i] != NULL;
1340 i++) {
1341 if (temperature_attributes[i] == NULL) {
1342 printk(KERN_ERR "applesmc: More temperature sensors "
1343 "in temperature_sensors_sets (at least %i)"
1344 "than available sysfs files in "
1345 "temperature_attributes (%i), please report "
1346 "this bug.\n", i, i-1);
1347 goto out_temperature;
1348 }
1349 ret = sysfs_create_file(&pdev->dev.kobj,
1350 temperature_attributes[i]);
1351 if (ret)
1352 goto out_temperature;
1353 }
1354
1355 if (applesmc_accelerometer) {
1356 ret = applesmc_create_accelerometer();
1357 if (ret)
1358 goto out_temperature;
1359 }
1360
1361 if (applesmc_light) {
1362 /* Add light sensor file */
1363 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_light.attr);
1364 if (ret)
1365 goto out_accelerometer;
1366
1367 /* Create the workqueue */
1368 applesmc_led_wq = create_singlethread_workqueue("applesmc-led");
1369 if (!applesmc_led_wq) {
1370 ret = -ENOMEM;
1371 goto out_light_sysfs;
1372 }
1373
1374 /* register as a led device */
1375 ret = led_classdev_register(&pdev->dev, &applesmc_backlight);
1376 if (ret < 0)
1377 goto out_light_wq;
1378 }
1379
1380 hwmon_dev = hwmon_device_register(&pdev->dev);
1381 if (IS_ERR(hwmon_dev)) {
1382 ret = PTR_ERR(hwmon_dev);
1383 goto out_light_ledclass;
1384 }
1385
1386 printk(KERN_INFO "applesmc: driver successfully loaded.\n");
1387
1388 return 0;
1389
1390 out_light_ledclass:
1391 if (applesmc_light)
1392 led_classdev_unregister(&applesmc_backlight);
1393 out_light_wq:
1394 if (applesmc_light)
1395 destroy_workqueue(applesmc_led_wq);
1396 out_light_sysfs:
1397 if (applesmc_light)
1398 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
1399 out_accelerometer:
1400 if (applesmc_accelerometer)
1401 applesmc_release_accelerometer();
1402 out_temperature:
1403 sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
1404 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]);
1405 out_fan_1:
1406 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]);
1407 out_key_enumeration:
1408 sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
1409 out_name:
1410 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
1411 out_device:
1412 platform_device_unregister(pdev);
1413 out_driver:
1414 platform_driver_unregister(&applesmc_driver);
1415 out_region:
1416 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS);
1417 out:
1418 printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret);
1419 return ret;
1420 }
1421
1422 static void __exit applesmc_exit(void)
1423 {
1424 hwmon_device_unregister(hwmon_dev);
1425 if (applesmc_light) {
1426 led_classdev_unregister(&applesmc_backlight);
1427 destroy_workqueue(applesmc_led_wq);
1428 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
1429 }
1430 if (applesmc_accelerometer)
1431 applesmc_release_accelerometer();
1432 sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
1433 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]);
1434 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]);
1435 sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
1436 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
1437 platform_device_unregister(pdev);
1438 platform_driver_unregister(&applesmc_driver);
1439 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS);
1440
1441 printk(KERN_INFO "applesmc: driver unloaded.\n");
1442 }
1443
1444 module_init(applesmc_init);
1445 module_exit(applesmc_exit);
1446
1447 MODULE_AUTHOR("Nicolas Boichat");
1448 MODULE_DESCRIPTION("Apple SMC");
1449 MODULE_LICENSE("GPL v2");
Support for the Chinese Samsung S3C2440 based development boards