]>
Commit | Line | Data |
---|---|---|
6f2fad74 NB |
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.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 | * First set for Macbook(Pro), second for Macmini. | |
83 | */ | |
84 | static const char* temperature_sensors_sets[][13] = { | |
85 | { "TA0P", "TB0T", "TC0D", "TC0P", "TG0H", "TG0P", "TG0T", "Th0H", | |
86 | "Th1H", "Tm0P", "Ts0P", "Ts1P", NULL }, | |
87 | { "TC0D", "TC0P", NULL } | |
88 | }; | |
89 | ||
90 | /* List of keys used to read/write fan speeds */ | |
91 | static const char* fan_speed_keys[] = { | |
92 | FAN_ACTUAL_SPEED, | |
93 | FAN_MIN_SPEED, | |
94 | FAN_MAX_SPEED, | |
95 | FAN_SAFE_SPEED, | |
96 | FAN_TARGET_SPEED | |
97 | }; | |
98 | ||
99 | #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */ | |
100 | #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */ | |
101 | ||
102 | #define APPLESMC_POLL_PERIOD (HZ/20) /* poll for input every 1/20s */ | |
103 | #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */ | |
104 | #define APPLESMC_INPUT_FLAT 4 | |
105 | ||
106 | #define SENSOR_X 0 | |
107 | #define SENSOR_Y 1 | |
108 | #define SENSOR_Z 2 | |
109 | ||
110 | /* Structure to be passed to DMI_MATCH function */ | |
111 | struct dmi_match_data { | |
112 | /* Indicates whether this computer has an accelerometer. */ | |
113 | int accelerometer; | |
114 | /* Indicates whether this computer has light sensors and keyboard backlight. */ | |
115 | int light; | |
116 | /* Indicates which temperature sensors set to use. */ | |
117 | int temperature_set; | |
118 | }; | |
119 | ||
120 | static const int debug; | |
121 | static struct platform_device *pdev; | |
122 | static s16 rest_x; | |
123 | static s16 rest_y; | |
124 | static struct timer_list applesmc_timer; | |
125 | static struct input_dev *applesmc_idev; | |
126 | static struct class_device *hwmon_class_dev; | |
127 | ||
128 | /* Indicates whether this computer has an accelerometer. */ | |
129 | static unsigned int applesmc_accelerometer; | |
130 | ||
131 | /* Indicates whether this computer has light sensors and keyboard backlight. */ | |
132 | static unsigned int applesmc_light; | |
133 | ||
134 | /* Indicates which temperature sensors set to use. */ | |
135 | static unsigned int applesmc_temperature_set; | |
136 | ||
137 | static struct mutex applesmc_lock; | |
138 | ||
139 | /* | |
140 | * Last index written to key_at_index sysfs file, and value to use for all other | |
141 | * key_at_index_* sysfs files. | |
142 | */ | |
143 | static unsigned int key_at_index; | |
144 | ||
145 | static struct workqueue_struct *applesmc_led_wq; | |
146 | ||
147 | /* | |
148 | * __wait_status - Wait up to 2ms for the status port to get a certain value | |
149 | * (masked with 0x0f), returning zero if the value is obtained. Callers must | |
150 | * hold applesmc_lock. | |
151 | */ | |
152 | static int __wait_status(u8 val) | |
153 | { | |
154 | unsigned int i; | |
155 | ||
156 | val = val & APPLESMC_STATUS_MASK; | |
157 | ||
158 | for (i = 0; i < 200; i++) { | |
159 | if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) { | |
160 | if (debug) | |
161 | printk(KERN_DEBUG | |
162 | "Waited %d us for status %x\n", | |
163 | i*10, val); | |
164 | return 0; | |
165 | } | |
166 | udelay(10); | |
167 | } | |
168 | ||
169 | printk(KERN_WARNING "applesmc: wait status failed: %x != %x\n", | |
170 | val, inb(APPLESMC_CMD_PORT)); | |
171 | ||
172 | return -EIO; | |
173 | } | |
174 | ||
175 | /* | |
176 | * applesmc_read_key - reads len bytes from a given key, and put them in buffer. | |
177 | * Returns zero on success or a negative error on failure. Callers must | |
178 | * hold applesmc_lock. | |
179 | */ | |
180 | static int applesmc_read_key(const char* key, u8* buffer, u8 len) | |
181 | { | |
182 | int i; | |
183 | ||
184 | if (len > APPLESMC_MAX_DATA_LENGTH) { | |
185 | printk(KERN_ERR "applesmc_read_key: cannot read more than " | |
186 | "%d bytes\n", APPLESMC_MAX_DATA_LENGTH); | |
187 | return -EINVAL; | |
188 | } | |
189 | ||
190 | outb(APPLESMC_READ_CMD, APPLESMC_CMD_PORT); | |
191 | if (__wait_status(0x0c)) | |
192 | return -EIO; | |
193 | ||
194 | for (i = 0; i < 4; i++) { | |
195 | outb(key[i], APPLESMC_DATA_PORT); | |
196 | if (__wait_status(0x04)) | |
197 | return -EIO; | |
198 | } | |
199 | if (debug) | |
200 | printk(KERN_DEBUG "<%s", key); | |
201 | ||
202 | outb(len, APPLESMC_DATA_PORT); | |
203 | if (debug) | |
204 | printk(KERN_DEBUG ">%x", len); | |
205 | ||
206 | for (i = 0; i < len; i++) { | |
207 | if (__wait_status(0x05)) | |
208 | return -EIO; | |
209 | buffer[i] = inb(APPLESMC_DATA_PORT); | |
210 | if (debug) | |
211 | printk(KERN_DEBUG "<%x", buffer[i]); | |
212 | } | |
213 | if (debug) | |
214 | printk(KERN_DEBUG "\n"); | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
219 | /* | |
220 | * applesmc_write_key - writes len bytes from buffer to a given key. | |
221 | * Returns zero on success or a negative error on failure. Callers must | |
222 | * hold applesmc_lock. | |
223 | */ | |
224 | static int applesmc_write_key(const char* key, u8* buffer, u8 len) | |
225 | { | |
226 | int i; | |
227 | ||
228 | if (len > APPLESMC_MAX_DATA_LENGTH) { | |
229 | printk(KERN_ERR "applesmc_write_key: cannot write more than " | |
230 | "%d bytes\n", APPLESMC_MAX_DATA_LENGTH); | |
231 | return -EINVAL; | |
232 | } | |
233 | ||
234 | outb(APPLESMC_WRITE_CMD, APPLESMC_CMD_PORT); | |
235 | if (__wait_status(0x0c)) | |
236 | return -EIO; | |
237 | ||
238 | for (i = 0; i < 4; i++) { | |
239 | outb(key[i], APPLESMC_DATA_PORT); | |
240 | if (__wait_status(0x04)) | |
241 | return -EIO; | |
242 | } | |
243 | ||
244 | outb(len, APPLESMC_DATA_PORT); | |
245 | ||
246 | for (i = 0; i < len; i++) { | |
247 | if (__wait_status(0x04)) | |
248 | return -EIO; | |
249 | outb(buffer[i], APPLESMC_DATA_PORT); | |
250 | } | |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
255 | /* | |
256 | * applesmc_get_key_at_index - get key at index, and put the result in key | |
257 | * (char[6]). Returns zero on success or a negative error on failure. Callers | |
258 | * must hold applesmc_lock. | |
259 | */ | |
260 | static int applesmc_get_key_at_index(int index, char* key) | |
261 | { | |
262 | int i; | |
263 | u8 readkey[4]; | |
264 | readkey[0] = index >> 24; | |
265 | readkey[1] = index >> 16; | |
266 | readkey[2] = index >> 8; | |
267 | readkey[3] = index; | |
268 | ||
269 | outb(APPLESMC_GET_KEY_BY_INDEX_CMD, APPLESMC_CMD_PORT); | |
270 | if (__wait_status(0x0c)) | |
271 | return -EIO; | |
272 | ||
273 | for (i = 0; i < 4; i++) { | |
274 | outb(readkey[i], APPLESMC_DATA_PORT); | |
275 | if (__wait_status(0x04)) | |
276 | return -EIO; | |
277 | } | |
278 | ||
279 | outb(4, APPLESMC_DATA_PORT); | |
280 | ||
281 | for (i = 0; i < 4; i++) { | |
282 | if (__wait_status(0x05)) | |
283 | return -EIO; | |
284 | key[i] = inb(APPLESMC_DATA_PORT); | |
285 | } | |
286 | key[4] = 0; | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
291 | /* | |
292 | * applesmc_get_key_type - get key type, and put the result in type (char[6]). | |
293 | * Returns zero on success or a negative error on failure. Callers must | |
294 | * hold applesmc_lock. | |
295 | */ | |
296 | static int applesmc_get_key_type(char* key, char* type) | |
297 | { | |
298 | int i; | |
299 | ||
300 | outb(APPLESMC_GET_KEY_TYPE_CMD, APPLESMC_CMD_PORT); | |
301 | if (__wait_status(0x0c)) | |
302 | return -EIO; | |
303 | ||
304 | for (i = 0; i < 4; i++) { | |
305 | outb(key[i], APPLESMC_DATA_PORT); | |
306 | if (__wait_status(0x04)) | |
307 | return -EIO; | |
308 | } | |
309 | ||
310 | outb(5, APPLESMC_DATA_PORT); | |
311 | ||
312 | for (i = 0; i < 6; i++) { | |
313 | if (__wait_status(0x05)) | |
314 | return -EIO; | |
315 | type[i] = inb(APPLESMC_DATA_PORT); | |
316 | } | |
317 | type[5] = 0; | |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
322 | /* | |
323 | * applesmc_read_motion_sensor - Read motion sensor (X, Y or Z). Callers must | |
324 | * hold applesmc_lock. | |
325 | */ | |
326 | static int applesmc_read_motion_sensor(int index, s16* value) | |
327 | { | |
328 | u8 buffer[2]; | |
329 | int ret; | |
330 | ||
331 | switch (index) { | |
332 | case SENSOR_X: | |
333 | ret = applesmc_read_key(MOTION_SENSOR_X_KEY, buffer, 2); | |
334 | break; | |
335 | case SENSOR_Y: | |
336 | ret = applesmc_read_key(MOTION_SENSOR_Y_KEY, buffer, 2); | |
337 | break; | |
338 | case SENSOR_Z: | |
339 | ret = applesmc_read_key(MOTION_SENSOR_Z_KEY, buffer, 2); | |
340 | break; | |
341 | default: | |
342 | ret = -EINVAL; | |
343 | } | |
344 | ||
345 | *value = ((s16)buffer[0] << 8) | buffer[1]; | |
346 | ||
347 | return ret; | |
348 | } | |
349 | ||
350 | /* | |
351 | * applesmc_device_init - initialize the accelerometer. Returns zero on success | |
352 | * and negative error code on failure. Can sleep. | |
353 | */ | |
354 | static int applesmc_device_init(void) | |
355 | { | |
356 | int total, ret = -ENXIO; | |
357 | u8 buffer[2]; | |
358 | ||
359 | if (!applesmc_accelerometer) | |
360 | return 0; | |
361 | ||
362 | mutex_lock(&applesmc_lock); | |
363 | ||
364 | for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { | |
365 | if (debug) | |
366 | printk(KERN_DEBUG "applesmc try %d\n", total); | |
367 | if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) && | |
368 | (buffer[0] != 0x00 || buffer[1] != 0x00)) { | |
369 | if (total == INIT_TIMEOUT_MSECS) { | |
370 | printk(KERN_DEBUG "applesmc: device has" | |
371 | " already been initialized" | |
372 | " (0x%02x, 0x%02x).\n", | |
373 | buffer[0], buffer[1]); | |
374 | } else { | |
375 | printk(KERN_DEBUG "applesmc: device" | |
376 | " successfully initialized" | |
377 | " (0x%02x, 0x%02x).\n", | |
378 | buffer[0], buffer[1]); | |
379 | } | |
380 | ret = 0; | |
381 | goto out; | |
382 | } | |
383 | buffer[0] = 0xe0; | |
384 | buffer[1] = 0x00; | |
385 | applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2); | |
386 | msleep(INIT_WAIT_MSECS); | |
387 | } | |
388 | ||
389 | printk(KERN_WARNING "applesmc: failed to init the device\n"); | |
390 | ||
391 | out: | |
392 | mutex_unlock(&applesmc_lock); | |
393 | return ret; | |
394 | } | |
395 | ||
396 | /* | |
397 | * applesmc_get_fan_count - get the number of fans. Callers must NOT hold | |
398 | * applesmc_lock. | |
399 | */ | |
400 | static int applesmc_get_fan_count(void) | |
401 | { | |
402 | int ret; | |
403 | u8 buffer[1]; | |
404 | ||
405 | mutex_lock(&applesmc_lock); | |
406 | ||
407 | ret = applesmc_read_key(FANS_COUNT, buffer, 1); | |
408 | ||
409 | mutex_unlock(&applesmc_lock); | |
410 | if (ret) | |
411 | return ret; | |
412 | else | |
413 | return buffer[0]; | |
414 | } | |
415 | ||
416 | /* Device model stuff */ | |
417 | static int applesmc_probe(struct platform_device *dev) | |
418 | { | |
419 | int ret; | |
420 | ||
421 | ret = applesmc_device_init(); | |
422 | if (ret) | |
423 | return ret; | |
424 | ||
425 | printk(KERN_INFO "applesmc: device successfully initialized.\n"); | |
426 | return 0; | |
427 | } | |
428 | ||
429 | static int applesmc_resume(struct platform_device *dev) | |
430 | { | |
431 | return applesmc_device_init(); | |
432 | } | |
433 | ||
434 | static struct platform_driver applesmc_driver = { | |
435 | .probe = applesmc_probe, | |
436 | .resume = applesmc_resume, | |
437 | .driver = { | |
438 | .name = "applesmc", | |
439 | .owner = THIS_MODULE, | |
440 | }, | |
441 | }; | |
442 | ||
443 | /* | |
444 | * applesmc_calibrate - Set our "resting" values. Callers must | |
445 | * hold applesmc_lock. | |
446 | */ | |
447 | static void applesmc_calibrate(void) | |
448 | { | |
449 | applesmc_read_motion_sensor(SENSOR_X, &rest_x); | |
450 | applesmc_read_motion_sensor(SENSOR_Y, &rest_y); | |
451 | rest_x = -rest_x; | |
452 | } | |
453 | ||
454 | static int applesmc_idev_open(struct input_dev *dev) | |
455 | { | |
456 | add_timer(&applesmc_timer); | |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
461 | static void applesmc_idev_close(struct input_dev *dev) | |
462 | { | |
463 | del_timer_sync(&applesmc_timer); | |
464 | } | |
465 | ||
466 | static void applesmc_idev_poll(unsigned long unused) | |
467 | { | |
468 | s16 x, y; | |
469 | ||
470 | /* Cannot sleep. Try nonblockingly. If we fail, try again later. */ | |
471 | if (!mutex_trylock(&applesmc_lock)) { | |
472 | mod_timer(&applesmc_timer, jiffies + APPLESMC_POLL_PERIOD); | |
473 | return; | |
474 | } | |
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(applesmc_idev, ABS_X, x - rest_x); | |
483 | input_report_abs(applesmc_idev, ABS_Y, y - rest_y); | |
484 | input_sync(applesmc_idev); | |
485 | ||
486 | out: | |
487 | mod_timer(&applesmc_timer, jiffies + APPLESMC_POLL_PERIOD); | |
488 | ||
489 | mutex_unlock(&applesmc_lock); | |
490 | } | |
491 | ||
492 | /* Sysfs Files */ | |
493 | ||
494 | static ssize_t applesmc_position_show(struct device *dev, | |
495 | struct device_attribute *attr, char *buf) | |
496 | { | |
497 | int ret; | |
498 | s16 x, y, z; | |
499 | ||
500 | mutex_lock(&applesmc_lock); | |
501 | ||
502 | ret = applesmc_read_motion_sensor(SENSOR_X, &x); | |
503 | if (ret) | |
504 | goto out; | |
505 | ret = applesmc_read_motion_sensor(SENSOR_Y, &y); | |
506 | if (ret) | |
507 | goto out; | |
508 | ret = applesmc_read_motion_sensor(SENSOR_Z, &z); | |
509 | if (ret) | |
510 | goto out; | |
511 | ||
512 | out: | |
513 | mutex_unlock(&applesmc_lock); | |
514 | if (ret) | |
515 | return ret; | |
516 | else | |
517 | return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z); | |
518 | } | |
519 | ||
520 | static ssize_t applesmc_light_show(struct device *dev, | |
521 | struct device_attribute *attr, char *sysfsbuf) | |
522 | { | |
523 | int ret; | |
524 | u8 left = 0, right = 0; | |
525 | u8 buffer[6]; | |
526 | ||
527 | mutex_lock(&applesmc_lock); | |
528 | ||
529 | ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, 6); | |
530 | left = buffer[2]; | |
531 | if (ret) | |
532 | goto out; | |
533 | ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, 6); | |
534 | right = buffer[2]; | |
535 | ||
536 | out: | |
537 | mutex_unlock(&applesmc_lock); | |
538 | if (ret) | |
539 | return ret; | |
540 | else | |
541 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right); | |
542 | } | |
543 | ||
544 | /* Displays degree Celsius * 1000 */ | |
545 | static ssize_t applesmc_show_temperature(struct device *dev, | |
546 | struct device_attribute *devattr, char *sysfsbuf) | |
547 | { | |
548 | int ret; | |
549 | u8 buffer[2]; | |
550 | unsigned int temp; | |
551 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
552 | const char* key = | |
553 | temperature_sensors_sets[applesmc_temperature_set][attr->index]; | |
554 | ||
555 | mutex_lock(&applesmc_lock); | |
556 | ||
557 | ret = applesmc_read_key(key, buffer, 2); | |
558 | temp = buffer[0]*1000; | |
559 | temp += (buffer[1] >> 6) * 250; | |
560 | ||
561 | mutex_unlock(&applesmc_lock); | |
562 | ||
563 | if (ret) | |
564 | return ret; | |
565 | else | |
566 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp); | |
567 | } | |
568 | ||
569 | static ssize_t applesmc_show_fan_speed(struct device *dev, | |
570 | struct device_attribute *attr, char *sysfsbuf) | |
571 | { | |
572 | int ret; | |
573 | unsigned int speed = 0; | |
574 | char newkey[5]; | |
575 | u8 buffer[2]; | |
576 | struct sensor_device_attribute_2 *sensor_attr = | |
577 | to_sensor_dev_attr_2(attr); | |
578 | ||
579 | newkey[0] = fan_speed_keys[sensor_attr->nr][0]; | |
580 | newkey[1] = '0' + sensor_attr->index; | |
581 | newkey[2] = fan_speed_keys[sensor_attr->nr][2]; | |
582 | newkey[3] = fan_speed_keys[sensor_attr->nr][3]; | |
583 | newkey[4] = 0; | |
584 | ||
585 | mutex_lock(&applesmc_lock); | |
586 | ||
587 | ret = applesmc_read_key(newkey, buffer, 2); | |
588 | speed = ((buffer[0] << 8 | buffer[1]) >> 2); | |
589 | ||
590 | mutex_unlock(&applesmc_lock); | |
591 | if (ret) | |
592 | return ret; | |
593 | else | |
594 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed); | |
595 | } | |
596 | ||
597 | static ssize_t applesmc_store_fan_speed(struct device *dev, | |
598 | struct device_attribute *attr, | |
599 | const char *sysfsbuf, size_t count) | |
600 | { | |
601 | int ret; | |
602 | u32 speed; | |
603 | char newkey[5]; | |
604 | u8 buffer[2]; | |
605 | struct sensor_device_attribute_2 *sensor_attr = | |
606 | to_sensor_dev_attr_2(attr); | |
607 | ||
608 | speed = simple_strtoul(sysfsbuf, NULL, 10); | |
609 | ||
610 | if (speed > 0x4000) /* Bigger than a 14-bit value */ | |
611 | return -EINVAL; | |
612 | ||
613 | newkey[0] = fan_speed_keys[sensor_attr->nr][0]; | |
614 | newkey[1] = '0' + sensor_attr->index; | |
615 | newkey[2] = fan_speed_keys[sensor_attr->nr][2]; | |
616 | newkey[3] = fan_speed_keys[sensor_attr->nr][3]; | |
617 | newkey[4] = 0; | |
618 | ||
619 | mutex_lock(&applesmc_lock); | |
620 | ||
621 | buffer[0] = (speed >> 6) & 0xff; | |
622 | buffer[1] = (speed << 2) & 0xff; | |
623 | ret = applesmc_write_key(newkey, buffer, 2); | |
624 | ||
625 | mutex_unlock(&applesmc_lock); | |
626 | if (ret) | |
627 | return ret; | |
628 | else | |
629 | return count; | |
630 | } | |
631 | ||
632 | static ssize_t applesmc_show_fan_manual(struct device *dev, | |
633 | struct device_attribute *devattr, char *sysfsbuf) | |
634 | { | |
635 | int ret; | |
636 | u16 manual = 0; | |
637 | u8 buffer[2]; | |
638 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
639 | ||
640 | mutex_lock(&applesmc_lock); | |
641 | ||
642 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); | |
643 | manual = ((buffer[0] << 8 | buffer[1]) >> attr->index) & 0x01; | |
644 | ||
645 | mutex_unlock(&applesmc_lock); | |
646 | if (ret) | |
647 | return ret; | |
648 | else | |
649 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual); | |
650 | } | |
651 | ||
652 | static ssize_t applesmc_store_fan_manual(struct device *dev, | |
653 | struct device_attribute *devattr, | |
654 | const char *sysfsbuf, size_t count) | |
655 | { | |
656 | int ret; | |
657 | u8 buffer[2]; | |
658 | u32 input; | |
659 | u16 val; | |
660 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
661 | ||
662 | input = simple_strtoul(sysfsbuf, NULL, 10); | |
663 | ||
664 | mutex_lock(&applesmc_lock); | |
665 | ||
666 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); | |
667 | val = (buffer[0] << 8 | buffer[1]); | |
668 | if (ret) | |
669 | goto out; | |
670 | ||
671 | if (input) | |
672 | val = val | (0x01 << attr->index); | |
673 | else | |
674 | val = val & ~(0x01 << attr->index); | |
675 | ||
676 | buffer[0] = (val >> 8) & 0xFF; | |
677 | buffer[1] = val & 0xFF; | |
678 | ||
679 | ret = applesmc_write_key(FANS_MANUAL, buffer, 2); | |
680 | ||
681 | out: | |
682 | mutex_unlock(&applesmc_lock); | |
683 | if (ret) | |
684 | return ret; | |
685 | else | |
686 | return count; | |
687 | } | |
688 | ||
689 | static ssize_t applesmc_show_fan_position(struct device *dev, | |
690 | struct device_attribute *attr, char *sysfsbuf) | |
691 | { | |
692 | int ret; | |
693 | char newkey[5]; | |
694 | u8 buffer[17]; | |
695 | struct sensor_device_attribute_2 *sensor_attr = | |
696 | to_sensor_dev_attr_2(attr); | |
697 | ||
698 | newkey[0] = FAN_POSITION[0]; | |
699 | newkey[1] = '0' + sensor_attr->index; | |
700 | newkey[2] = FAN_POSITION[2]; | |
701 | newkey[3] = FAN_POSITION[3]; | |
702 | newkey[4] = 0; | |
703 | ||
704 | mutex_lock(&applesmc_lock); | |
705 | ||
706 | ret = applesmc_read_key(newkey, buffer, 16); | |
707 | buffer[16] = 0; | |
708 | ||
709 | mutex_unlock(&applesmc_lock); | |
710 | if (ret) | |
711 | return ret; | |
712 | else | |
713 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4); | |
714 | } | |
715 | ||
716 | static ssize_t applesmc_calibrate_show(struct device *dev, | |
717 | struct device_attribute *attr, char *sysfsbuf) | |
718 | { | |
719 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y); | |
720 | } | |
721 | ||
722 | static ssize_t applesmc_calibrate_store(struct device *dev, | |
723 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
724 | { | |
725 | mutex_lock(&applesmc_lock); | |
726 | applesmc_calibrate(); | |
727 | mutex_unlock(&applesmc_lock); | |
728 | ||
729 | return count; | |
730 | } | |
731 | ||
732 | /* Store the next backlight value to be written by the work */ | |
733 | static unsigned int backlight_value; | |
734 | ||
735 | static void applesmc_backlight_set(struct work_struct *work) | |
736 | { | |
737 | u8 buffer[2]; | |
738 | ||
739 | mutex_lock(&applesmc_lock); | |
740 | buffer[0] = backlight_value; | |
741 | buffer[1] = 0x00; | |
742 | applesmc_write_key(BACKLIGHT_KEY, buffer, 2); | |
743 | mutex_unlock(&applesmc_lock); | |
744 | } | |
745 | static DECLARE_WORK(backlight_work, &applesmc_backlight_set); | |
746 | ||
747 | static void applesmc_brightness_set(struct led_classdev *led_cdev, | |
748 | enum led_brightness value) | |
749 | { | |
750 | int ret; | |
751 | ||
752 | backlight_value = value; | |
753 | ret = queue_work(applesmc_led_wq, &backlight_work); | |
754 | ||
755 | if (debug && (!ret)) | |
756 | printk(KERN_DEBUG "applesmc: work was already on the queue.\n"); | |
757 | } | |
758 | ||
759 | static ssize_t applesmc_key_count_show(struct device *dev, | |
760 | struct device_attribute *attr, char *sysfsbuf) | |
761 | { | |
762 | int ret; | |
763 | u8 buffer[4]; | |
764 | u32 count; | |
765 | ||
766 | mutex_lock(&applesmc_lock); | |
767 | ||
768 | ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4); | |
769 | count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) + | |
770 | ((u32)buffer[2]<<8) + buffer[3]; | |
771 | ||
772 | mutex_unlock(&applesmc_lock); | |
773 | if (ret) | |
774 | return ret; | |
775 | else | |
776 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count); | |
777 | } | |
778 | ||
779 | static ssize_t applesmc_key_at_index_read_show(struct device *dev, | |
780 | struct device_attribute *attr, char *sysfsbuf) | |
781 | { | |
782 | char key[5]; | |
783 | char info[6]; | |
784 | int ret; | |
785 | ||
786 | mutex_lock(&applesmc_lock); | |
787 | ||
788 | ret = applesmc_get_key_at_index(key_at_index, key); | |
789 | ||
790 | if (ret || !key[0]) { | |
791 | mutex_unlock(&applesmc_lock); | |
792 | ||
793 | return -EINVAL; | |
794 | } | |
795 | ||
796 | ret = applesmc_get_key_type(key, info); | |
797 | ||
798 | if (ret) { | |
799 | mutex_unlock(&applesmc_lock); | |
800 | ||
801 | return ret; | |
802 | } | |
803 | ||
804 | /* | |
805 | * info[0] maximum value (APPLESMC_MAX_DATA_LENGTH) is much lower than | |
806 | * PAGE_SIZE, so we don't need any checks before writing to sysfsbuf. | |
807 | */ | |
808 | ret = applesmc_read_key(key, sysfsbuf, info[0]); | |
809 | ||
810 | mutex_unlock(&applesmc_lock); | |
811 | ||
812 | if (!ret) { | |
813 | return info[0]; | |
814 | } | |
815 | else { | |
816 | return ret; | |
817 | } | |
818 | } | |
819 | ||
820 | static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, | |
821 | struct device_attribute *attr, char *sysfsbuf) | |
822 | { | |
823 | char key[5]; | |
824 | char info[6]; | |
825 | int ret; | |
826 | ||
827 | mutex_lock(&applesmc_lock); | |
828 | ||
829 | ret = applesmc_get_key_at_index(key_at_index, key); | |
830 | ||
831 | if (ret || !key[0]) { | |
832 | mutex_unlock(&applesmc_lock); | |
833 | ||
834 | return -EINVAL; | |
835 | } | |
836 | ||
837 | ret = applesmc_get_key_type(key, info); | |
838 | ||
839 | mutex_unlock(&applesmc_lock); | |
840 | ||
841 | if (!ret) | |
842 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", info[0]); | |
843 | else | |
844 | return ret; | |
845 | } | |
846 | ||
847 | static ssize_t applesmc_key_at_index_type_show(struct device *dev, | |
848 | struct device_attribute *attr, char *sysfsbuf) | |
849 | { | |
850 | char key[5]; | |
851 | char info[6]; | |
852 | int ret; | |
853 | ||
854 | mutex_lock(&applesmc_lock); | |
855 | ||
856 | ret = applesmc_get_key_at_index(key_at_index, key); | |
857 | ||
858 | if (ret || !key[0]) { | |
859 | mutex_unlock(&applesmc_lock); | |
860 | ||
861 | return -EINVAL; | |
862 | } | |
863 | ||
864 | ret = applesmc_get_key_type(key, info); | |
865 | ||
866 | mutex_unlock(&applesmc_lock); | |
867 | ||
868 | if (!ret) | |
869 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", info+1); | |
870 | else | |
871 | return ret; | |
872 | } | |
873 | ||
874 | static ssize_t applesmc_key_at_index_name_show(struct device *dev, | |
875 | struct device_attribute *attr, char *sysfsbuf) | |
876 | { | |
877 | char key[5]; | |
878 | int ret; | |
879 | ||
880 | mutex_lock(&applesmc_lock); | |
881 | ||
882 | ret = applesmc_get_key_at_index(key_at_index, key); | |
883 | ||
884 | mutex_unlock(&applesmc_lock); | |
885 | ||
886 | if (!ret && key[0]) | |
887 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key); | |
888 | else | |
889 | return -EINVAL; | |
890 | } | |
891 | ||
892 | static ssize_t applesmc_key_at_index_show(struct device *dev, | |
893 | struct device_attribute *attr, char *sysfsbuf) | |
894 | { | |
895 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index); | |
896 | } | |
897 | ||
898 | static ssize_t applesmc_key_at_index_store(struct device *dev, | |
899 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
900 | { | |
901 | mutex_lock(&applesmc_lock); | |
902 | ||
903 | key_at_index = simple_strtoul(sysfsbuf, NULL, 10); | |
904 | ||
905 | mutex_unlock(&applesmc_lock); | |
906 | ||
907 | return count; | |
908 | } | |
909 | ||
910 | static struct led_classdev applesmc_backlight = { | |
911 | .name = "smc:kbd_backlight", | |
912 | .default_trigger = "nand-disk", | |
913 | .brightness_set = applesmc_brightness_set, | |
914 | }; | |
915 | ||
916 | static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL); | |
917 | static DEVICE_ATTR(calibrate, 0644, | |
918 | applesmc_calibrate_show, applesmc_calibrate_store); | |
919 | ||
920 | static struct attribute *accelerometer_attributes[] = { | |
921 | &dev_attr_position.attr, | |
922 | &dev_attr_calibrate.attr, | |
923 | NULL | |
924 | }; | |
925 | ||
926 | static const struct attribute_group accelerometer_attributes_group = | |
927 | { .attrs = accelerometer_attributes }; | |
928 | ||
929 | static DEVICE_ATTR(light, 0444, applesmc_light_show, NULL); | |
930 | ||
931 | static DEVICE_ATTR(key_count, 0444, applesmc_key_count_show, NULL); | |
932 | static DEVICE_ATTR(key_at_index, 0644, | |
933 | applesmc_key_at_index_show, applesmc_key_at_index_store); | |
934 | static DEVICE_ATTR(key_at_index_name, 0444, | |
935 | applesmc_key_at_index_name_show, NULL); | |
936 | static DEVICE_ATTR(key_at_index_type, 0444, | |
937 | applesmc_key_at_index_type_show, NULL); | |
938 | static DEVICE_ATTR(key_at_index_data_length, 0444, | |
939 | applesmc_key_at_index_data_length_show, NULL); | |
940 | static DEVICE_ATTR(key_at_index_data, 0444, | |
941 | applesmc_key_at_index_read_show, NULL); | |
942 | ||
943 | static struct attribute *key_enumeration_attributes[] = { | |
944 | &dev_attr_key_count.attr, | |
945 | &dev_attr_key_at_index.attr, | |
946 | &dev_attr_key_at_index_name.attr, | |
947 | &dev_attr_key_at_index_type.attr, | |
948 | &dev_attr_key_at_index_data_length.attr, | |
949 | &dev_attr_key_at_index_data.attr, | |
950 | NULL | |
951 | }; | |
952 | ||
953 | static const struct attribute_group key_enumeration_group = | |
954 | { .attrs = key_enumeration_attributes }; | |
955 | ||
956 | /* | |
957 | * Macro defining SENSOR_DEVICE_ATTR for a fan sysfs entries. | |
958 | * - show actual speed | |
959 | * - show/store minimum speed | |
960 | * - show maximum speed | |
961 | * - show safe speed | |
962 | * - show/store target speed | |
963 | * - show/store manual mode | |
964 | */ | |
965 | #define sysfs_fan_speeds_offset(offset) \ | |
966 | static SENSOR_DEVICE_ATTR_2(fan##offset##_input, S_IRUGO, \ | |
967 | applesmc_show_fan_speed, NULL, 0, offset-1); \ | |
968 | \ | |
969 | static SENSOR_DEVICE_ATTR_2(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
970 | applesmc_show_fan_speed, applesmc_store_fan_speed, 1, offset-1); \ | |
971 | \ | |
972 | static SENSOR_DEVICE_ATTR_2(fan##offset##_max, S_IRUGO, \ | |
973 | applesmc_show_fan_speed, NULL, 2, offset-1); \ | |
974 | \ | |
975 | static SENSOR_DEVICE_ATTR_2(fan##offset##_safe, S_IRUGO, \ | |
976 | applesmc_show_fan_speed, NULL, 3, offset-1); \ | |
977 | \ | |
978 | static SENSOR_DEVICE_ATTR_2(fan##offset##_output, S_IRUGO | S_IWUSR, \ | |
979 | applesmc_show_fan_speed, applesmc_store_fan_speed, 4, offset-1); \ | |
980 | \ | |
981 | static SENSOR_DEVICE_ATTR(fan##offset##_manual, S_IRUGO | S_IWUSR, \ | |
982 | applesmc_show_fan_manual, applesmc_store_fan_manual, offset-1); \ | |
983 | \ | |
984 | static SENSOR_DEVICE_ATTR(fan##offset##_position, S_IRUGO, \ | |
985 | applesmc_show_fan_position, NULL, offset-1); \ | |
986 | \ | |
987 | static struct attribute *fan##offset##_attributes[] = { \ | |
988 | &sensor_dev_attr_fan##offset##_input.dev_attr.attr, \ | |
989 | &sensor_dev_attr_fan##offset##_min.dev_attr.attr, \ | |
990 | &sensor_dev_attr_fan##offset##_max.dev_attr.attr, \ | |
991 | &sensor_dev_attr_fan##offset##_safe.dev_attr.attr, \ | |
992 | &sensor_dev_attr_fan##offset##_output.dev_attr.attr, \ | |
993 | &sensor_dev_attr_fan##offset##_manual.dev_attr.attr, \ | |
994 | &sensor_dev_attr_fan##offset##_position.dev_attr.attr, \ | |
995 | NULL \ | |
996 | }; | |
997 | ||
998 | /* | |
999 | * Create the needed functions for each fan using the macro defined above | |
1000 | * (2 fans are supported) | |
1001 | */ | |
1002 | sysfs_fan_speeds_offset(1); | |
1003 | sysfs_fan_speeds_offset(2); | |
1004 | ||
1005 | static const struct attribute_group fan_attribute_groups[] = { | |
1006 | { .attrs = fan1_attributes }, | |
1007 | { .attrs = fan2_attributes } | |
1008 | }; | |
1009 | ||
1010 | /* | |
1011 | * Temperature sensors sysfs entries. | |
1012 | */ | |
1013 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, | |
1014 | applesmc_show_temperature, NULL, 0); | |
1015 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, | |
1016 | applesmc_show_temperature, NULL, 1); | |
1017 | static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, | |
1018 | applesmc_show_temperature, NULL, 2); | |
1019 | static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, | |
1020 | applesmc_show_temperature, NULL, 3); | |
1021 | static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, | |
1022 | applesmc_show_temperature, NULL, 4); | |
1023 | static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, | |
1024 | applesmc_show_temperature, NULL, 5); | |
1025 | static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, | |
1026 | applesmc_show_temperature, NULL, 6); | |
1027 | static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, | |
1028 | applesmc_show_temperature, NULL, 7); | |
1029 | static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, | |
1030 | applesmc_show_temperature, NULL, 8); | |
1031 | static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, | |
1032 | applesmc_show_temperature, NULL, 9); | |
1033 | static SENSOR_DEVICE_ATTR(temp11_input, S_IRUGO, | |
1034 | applesmc_show_temperature, NULL, 10); | |
1035 | static SENSOR_DEVICE_ATTR(temp12_input, S_IRUGO, | |
1036 | applesmc_show_temperature, NULL, 11); | |
1037 | ||
1038 | static struct attribute *temperature_attributes[] = { | |
1039 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
1040 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
1041 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
1042 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
1043 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
1044 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
1045 | &sensor_dev_attr_temp7_input.dev_attr.attr, | |
1046 | &sensor_dev_attr_temp8_input.dev_attr.attr, | |
1047 | &sensor_dev_attr_temp9_input.dev_attr.attr, | |
1048 | &sensor_dev_attr_temp10_input.dev_attr.attr, | |
1049 | &sensor_dev_attr_temp11_input.dev_attr.attr, | |
1050 | &sensor_dev_attr_temp12_input.dev_attr.attr, | |
1051 | NULL | |
1052 | }; | |
1053 | ||
1054 | static const struct attribute_group temperature_attributes_group = | |
1055 | { .attrs = temperature_attributes }; | |
1056 | ||
1057 | /* Module stuff */ | |
1058 | ||
1059 | /* | |
1060 | * applesmc_dmi_match - found a match. return one, short-circuiting the hunt. | |
1061 | */ | |
1062 | static int applesmc_dmi_match(struct dmi_system_id *id) | |
1063 | { | |
1064 | int i = 0; | |
1065 | struct dmi_match_data* dmi_data = id->driver_data; | |
1066 | printk(KERN_INFO "applesmc: %s detected:\n", id->ident); | |
1067 | applesmc_accelerometer = dmi_data->accelerometer; | |
1068 | printk(KERN_INFO "applesmc: - Model %s accelerometer\n", | |
1069 | applesmc_accelerometer ? "with" : "without"); | |
1070 | applesmc_light = dmi_data->light; | |
1071 | printk(KERN_INFO "applesmc: - Model %s light sensors and backlight\n", | |
1072 | applesmc_light ? "with" : "without"); | |
1073 | ||
1074 | applesmc_temperature_set = dmi_data->temperature_set; | |
1075 | while (temperature_sensors_sets[applesmc_temperature_set][i] != NULL) | |
1076 | i++; | |
1077 | printk(KERN_INFO "applesmc: - Model with %d temperature sensors\n", i); | |
1078 | return 1; | |
1079 | } | |
1080 | ||
1081 | /* Create accelerometer ressources */ | |
1082 | static int applesmc_create_accelerometer(void) | |
1083 | { | |
1084 | int ret; | |
1085 | ||
1086 | ret = sysfs_create_group(&pdev->dev.kobj, | |
1087 | &accelerometer_attributes_group); | |
1088 | if (ret) | |
1089 | goto out; | |
1090 | ||
1091 | applesmc_idev = input_allocate_device(); | |
1092 | if (!applesmc_idev) { | |
1093 | ret = -ENOMEM; | |
1094 | goto out_sysfs; | |
1095 | } | |
1096 | ||
1097 | /* initial calibrate for the input device */ | |
1098 | applesmc_calibrate(); | |
1099 | ||
1100 | /* initialize the input class */ | |
1101 | applesmc_idev->name = "applesmc"; | |
1102 | applesmc_idev->id.bustype = BUS_HOST; | |
1103 | applesmc_idev->cdev.dev = &pdev->dev; | |
1104 | applesmc_idev->evbit[0] = BIT(EV_ABS); | |
1105 | applesmc_idev->open = applesmc_idev_open; | |
1106 | applesmc_idev->close = applesmc_idev_close; | |
1107 | input_set_abs_params(applesmc_idev, ABS_X, | |
1108 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); | |
1109 | input_set_abs_params(applesmc_idev, ABS_Y, | |
1110 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); | |
1111 | ||
1112 | ret = input_register_device(applesmc_idev); | |
1113 | if (ret) | |
1114 | goto out_idev; | |
1115 | ||
1116 | /* start up our timer for the input device */ | |
1117 | init_timer(&applesmc_timer); | |
1118 | applesmc_timer.function = applesmc_idev_poll; | |
1119 | applesmc_timer.expires = jiffies + APPLESMC_POLL_PERIOD; | |
1120 | ||
1121 | return 0; | |
1122 | ||
1123 | out_idev: | |
1124 | input_free_device(applesmc_idev); | |
1125 | ||
1126 | out_sysfs: | |
1127 | sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group); | |
1128 | ||
1129 | out: | |
1130 | printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret); | |
1131 | return ret; | |
1132 | } | |
1133 | ||
1134 | /* Release all ressources used by the accelerometer */ | |
1135 | static void applesmc_release_accelerometer(void) | |
1136 | { | |
1137 | del_timer_sync(&applesmc_timer); | |
1138 | input_unregister_device(applesmc_idev); | |
1139 | sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group); | |
1140 | } | |
1141 | ||
1142 | static __initdata struct dmi_match_data applesmc_dmi_data[] = { | |
1143 | /* MacBook Pro: accelerometer, backlight and temperature set 0 */ | |
1144 | { .accelerometer = 1, .light = 1, .temperature_set = 0 }, | |
1145 | /* MacBook: accelerometer and temperature set 0 */ | |
1146 | { .accelerometer = 1, .light = 0, .temperature_set = 0 }, | |
1147 | /* MacBook: temperature set 1 */ | |
1148 | { .accelerometer = 0, .light = 0, .temperature_set = 1 } | |
1149 | }; | |
1150 | ||
1151 | /* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1". | |
1152 | * So we need to put "Apple MacBook Pro" before "Apple MacBook". */ | |
1153 | static __initdata struct dmi_system_id applesmc_whitelist[] = { | |
1154 | { applesmc_dmi_match, "Apple MacBook Pro", { | |
1155 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1156 | DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro") }, | |
1157 | (void*)&applesmc_dmi_data[0]}, | |
1158 | { applesmc_dmi_match, "Apple MacBook", { | |
1159 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1160 | DMI_MATCH(DMI_PRODUCT_NAME,"MacBook") }, | |
1161 | (void*)&applesmc_dmi_data[1]}, | |
1162 | { applesmc_dmi_match, "Apple Macmini", { | |
1163 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1164 | DMI_MATCH(DMI_PRODUCT_NAME,"Macmini") }, | |
1165 | (void*)&applesmc_dmi_data[2]}, | |
1166 | { .ident = NULL } | |
1167 | }; | |
1168 | ||
1169 | static int __init applesmc_init(void) | |
1170 | { | |
1171 | int ret; | |
1172 | int count; | |
1173 | int i; | |
1174 | ||
1175 | mutex_init(&applesmc_lock); | |
1176 | ||
1177 | if (!dmi_check_system(applesmc_whitelist)) { | |
1178 | printk(KERN_WARNING "applesmc: supported laptop not found!\n"); | |
1179 | ret = -ENODEV; | |
1180 | goto out; | |
1181 | } | |
1182 | ||
1183 | if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS, | |
1184 | "applesmc")) { | |
1185 | ret = -ENXIO; | |
1186 | goto out; | |
1187 | } | |
1188 | ||
1189 | ret = platform_driver_register(&applesmc_driver); | |
1190 | if (ret) | |
1191 | goto out_region; | |
1192 | ||
1193 | pdev = platform_device_register_simple("applesmc", -1, NULL, 0); | |
1194 | if (IS_ERR(pdev)) { | |
1195 | ret = PTR_ERR(pdev); | |
1196 | goto out_driver; | |
1197 | } | |
1198 | ||
1199 | /* Create key enumeration sysfs files */ | |
1200 | ret = sysfs_create_group(&pdev->dev.kobj, &key_enumeration_group); | |
1201 | if (ret) | |
1202 | goto out_device; | |
1203 | ||
1204 | /* create fan files */ | |
1205 | count = applesmc_get_fan_count(); | |
1206 | if (count < 0) { | |
1207 | printk(KERN_ERR "applesmc: Cannot get the number of fans.\n"); | |
1208 | } else { | |
1209 | printk(KERN_INFO "applesmc: %d fans found.\n", count); | |
1210 | ||
1211 | switch (count) { | |
1212 | default: | |
1213 | printk(KERN_WARNING "applesmc: More than 2 fans found," | |
1214 | " but at most 2 fans are supported" | |
1215 | " by the driver.\n"); | |
1216 | case 2: | |
1217 | ret = sysfs_create_group(&pdev->dev.kobj, | |
1218 | &fan_attribute_groups[1]); | |
1219 | if (ret) | |
1220 | goto out_key_enumeration; | |
1221 | case 1: | |
1222 | ret = sysfs_create_group(&pdev->dev.kobj, | |
1223 | &fan_attribute_groups[0]); | |
1224 | if (ret) | |
1225 | goto out_fan_1; | |
1226 | case 0: | |
1227 | ; | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | for (i = 0; | |
1232 | temperature_sensors_sets[applesmc_temperature_set][i] != NULL; | |
1233 | i++) { | |
1234 | if (temperature_attributes[i] == NULL) { | |
1235 | printk(KERN_ERR "applesmc: More temperature sensors " | |
1236 | "in temperature_sensors_sets (at least %i)" | |
1237 | "than available sysfs files in " | |
1238 | "temperature_attributes (%i), please report " | |
1239 | "this bug.\n", i, i-1); | |
1240 | goto out_temperature; | |
1241 | } | |
1242 | ret = sysfs_create_file(&pdev->dev.kobj, | |
1243 | temperature_attributes[i]); | |
1244 | if (ret) | |
1245 | goto out_temperature; | |
1246 | } | |
1247 | ||
1248 | if (applesmc_accelerometer) { | |
1249 | ret = applesmc_create_accelerometer(); | |
1250 | if (ret) | |
1251 | goto out_temperature; | |
1252 | } | |
1253 | ||
1254 | if (applesmc_light) { | |
1255 | /* Add light sensor file */ | |
1256 | ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_light.attr); | |
1257 | if (ret) | |
1258 | goto out_accelerometer; | |
1259 | ||
1260 | /* Create the workqueue */ | |
1261 | applesmc_led_wq = create_singlethread_workqueue("applesmc-led"); | |
1262 | if (!applesmc_led_wq) { | |
1263 | ret = -ENOMEM; | |
1264 | goto out_light_sysfs; | |
1265 | } | |
1266 | ||
1267 | /* register as a led device */ | |
1268 | ret = led_classdev_register(&pdev->dev, &applesmc_backlight); | |
1269 | if (ret < 0) | |
1270 | goto out_light_wq; | |
1271 | } | |
1272 | ||
1273 | hwmon_class_dev = hwmon_device_register(&pdev->dev); | |
1274 | if (IS_ERR(hwmon_class_dev)) { | |
1275 | ret = PTR_ERR(hwmon_class_dev); | |
1276 | goto out_light_ledclass; | |
1277 | } | |
1278 | ||
1279 | printk(KERN_INFO "applesmc: driver successfully loaded.\n"); | |
1280 | ||
1281 | return 0; | |
1282 | ||
1283 | out_light_ledclass: | |
1284 | if (applesmc_light) | |
1285 | led_classdev_unregister(&applesmc_backlight); | |
1286 | out_light_wq: | |
1287 | if (applesmc_light) | |
1288 | destroy_workqueue(applesmc_led_wq); | |
1289 | out_light_sysfs: | |
1290 | if (applesmc_light) | |
1291 | sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr); | |
1292 | out_accelerometer: | |
1293 | if (applesmc_accelerometer) | |
1294 | applesmc_release_accelerometer(); | |
1295 | out_temperature: | |
1296 | sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group); | |
1297 | sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]); | |
1298 | out_fan_1: | |
1299 | sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]); | |
1300 | out_key_enumeration: | |
1301 | sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group); | |
1302 | out_device: | |
1303 | platform_device_unregister(pdev); | |
1304 | out_driver: | |
1305 | platform_driver_unregister(&applesmc_driver); | |
1306 | out_region: | |
1307 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
1308 | out: | |
1309 | printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret); | |
1310 | return ret; | |
1311 | } | |
1312 | ||
1313 | static void __exit applesmc_exit(void) | |
1314 | { | |
1315 | hwmon_device_unregister(hwmon_class_dev); | |
1316 | if (applesmc_light) { | |
1317 | led_classdev_unregister(&applesmc_backlight); | |
1318 | destroy_workqueue(applesmc_led_wq); | |
1319 | sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr); | |
1320 | } | |
1321 | if (applesmc_accelerometer) | |
1322 | applesmc_release_accelerometer(); | |
1323 | sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group); | |
1324 | sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]); | |
1325 | sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]); | |
1326 | sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group); | |
1327 | platform_device_unregister(pdev); | |
1328 | platform_driver_unregister(&applesmc_driver); | |
1329 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
1330 | ||
1331 | printk(KERN_INFO "applesmc: driver unloaded.\n"); | |
1332 | } | |
1333 | ||
1334 | module_init(applesmc_init); | |
1335 | module_exit(applesmc_exit); | |
1336 | ||
1337 | MODULE_AUTHOR("Nicolas Boichat"); | |
1338 | MODULE_DESCRIPTION("Apple SMC"); | |
1339 | MODULE_LICENSE("GPL v2"); |