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Commit | Line | Data |
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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). | |
6f2fad74 NB |
82 | */ |
83 | static const char* temperature_sensors_sets[][13] = { | |
1bed24b9 | 84 | /* Set 0: Macbook Pro */ |
6f2fad74 NB |
85 | { "TA0P", "TB0T", "TC0D", "TC0P", "TG0H", "TG0P", "TG0T", "Th0H", |
86 | "Th1H", "Tm0P", "Ts0P", "Ts1P", NULL }, | |
1bed24b9 MS |
87 | /* Set 1: Macbook set */ |
88 | { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TN1P", "Th0H", "Th0S", | |
89 | "Th1H", "Ts0P", NULL }, | |
90 | /* Set 2: Macmini set */ | |
6f2fad74 NB |
91 | { "TC0D", "TC0P", NULL } |
92 | }; | |
93 | ||
94 | /* List of keys used to read/write fan speeds */ | |
95 | static const char* fan_speed_keys[] = { | |
96 | FAN_ACTUAL_SPEED, | |
97 | FAN_MIN_SPEED, | |
98 | FAN_MAX_SPEED, | |
99 | FAN_SAFE_SPEED, | |
100 | FAN_TARGET_SPEED | |
101 | }; | |
102 | ||
103 | #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */ | |
104 | #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */ | |
105 | ||
106 | #define APPLESMC_POLL_PERIOD (HZ/20) /* poll for input every 1/20s */ | |
107 | #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */ | |
108 | #define APPLESMC_INPUT_FLAT 4 | |
109 | ||
110 | #define SENSOR_X 0 | |
111 | #define SENSOR_Y 1 | |
112 | #define SENSOR_Z 2 | |
113 | ||
114 | /* Structure to be passed to DMI_MATCH function */ | |
115 | struct dmi_match_data { | |
116 | /* Indicates whether this computer has an accelerometer. */ | |
117 | int accelerometer; | |
118 | /* Indicates whether this computer has light sensors and keyboard backlight. */ | |
119 | int light; | |
120 | /* Indicates which temperature sensors set to use. */ | |
121 | int temperature_set; | |
122 | }; | |
123 | ||
124 | static const int debug; | |
125 | static struct platform_device *pdev; | |
126 | static s16 rest_x; | |
127 | static s16 rest_y; | |
128 | static struct timer_list applesmc_timer; | |
129 | static struct input_dev *applesmc_idev; | |
130 | static struct class_device *hwmon_class_dev; | |
131 | ||
132 | /* Indicates whether this computer has an accelerometer. */ | |
133 | static unsigned int applesmc_accelerometer; | |
134 | ||
135 | /* Indicates whether this computer has light sensors and keyboard backlight. */ | |
136 | static unsigned int applesmc_light; | |
137 | ||
138 | /* Indicates which temperature sensors set to use. */ | |
139 | static unsigned int applesmc_temperature_set; | |
140 | ||
141 | static struct mutex applesmc_lock; | |
142 | ||
143 | /* | |
144 | * Last index written to key_at_index sysfs file, and value to use for all other | |
145 | * key_at_index_* sysfs files. | |
146 | */ | |
147 | static unsigned int key_at_index; | |
148 | ||
149 | static struct workqueue_struct *applesmc_led_wq; | |
150 | ||
151 | /* | |
152 | * __wait_status - Wait up to 2ms for the status port to get a certain value | |
153 | * (masked with 0x0f), returning zero if the value is obtained. Callers must | |
154 | * hold applesmc_lock. | |
155 | */ | |
156 | static int __wait_status(u8 val) | |
157 | { | |
158 | unsigned int i; | |
159 | ||
160 | val = val & APPLESMC_STATUS_MASK; | |
161 | ||
162 | for (i = 0; i < 200; i++) { | |
163 | if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) { | |
164 | if (debug) | |
165 | printk(KERN_DEBUG | |
166 | "Waited %d us for status %x\n", | |
167 | i*10, val); | |
168 | return 0; | |
169 | } | |
170 | udelay(10); | |
171 | } | |
172 | ||
173 | printk(KERN_WARNING "applesmc: wait status failed: %x != %x\n", | |
174 | val, inb(APPLESMC_CMD_PORT)); | |
175 | ||
176 | return -EIO; | |
177 | } | |
178 | ||
179 | /* | |
180 | * applesmc_read_key - reads len bytes from a given key, and put them in buffer. | |
181 | * Returns zero on success or a negative error on failure. Callers must | |
182 | * hold applesmc_lock. | |
183 | */ | |
184 | static int applesmc_read_key(const char* key, u8* buffer, u8 len) | |
185 | { | |
186 | int i; | |
187 | ||
188 | if (len > APPLESMC_MAX_DATA_LENGTH) { | |
189 | printk(KERN_ERR "applesmc_read_key: cannot read more than " | |
190 | "%d bytes\n", APPLESMC_MAX_DATA_LENGTH); | |
191 | return -EINVAL; | |
192 | } | |
193 | ||
194 | outb(APPLESMC_READ_CMD, APPLESMC_CMD_PORT); | |
195 | if (__wait_status(0x0c)) | |
196 | return -EIO; | |
197 | ||
198 | for (i = 0; i < 4; i++) { | |
199 | outb(key[i], APPLESMC_DATA_PORT); | |
200 | if (__wait_status(0x04)) | |
201 | return -EIO; | |
202 | } | |
203 | if (debug) | |
204 | printk(KERN_DEBUG "<%s", key); | |
205 | ||
206 | outb(len, APPLESMC_DATA_PORT); | |
207 | if (debug) | |
208 | printk(KERN_DEBUG ">%x", len); | |
209 | ||
210 | for (i = 0; i < len; i++) { | |
211 | if (__wait_status(0x05)) | |
212 | return -EIO; | |
213 | buffer[i] = inb(APPLESMC_DATA_PORT); | |
214 | if (debug) | |
215 | printk(KERN_DEBUG "<%x", buffer[i]); | |
216 | } | |
217 | if (debug) | |
218 | printk(KERN_DEBUG "\n"); | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | /* | |
224 | * applesmc_write_key - writes len bytes from buffer to a given key. | |
225 | * Returns zero on success or a negative error on failure. Callers must | |
226 | * hold applesmc_lock. | |
227 | */ | |
228 | static int applesmc_write_key(const char* key, u8* buffer, u8 len) | |
229 | { | |
230 | int i; | |
231 | ||
232 | if (len > APPLESMC_MAX_DATA_LENGTH) { | |
233 | printk(KERN_ERR "applesmc_write_key: cannot write more than " | |
234 | "%d bytes\n", APPLESMC_MAX_DATA_LENGTH); | |
235 | return -EINVAL; | |
236 | } | |
237 | ||
238 | outb(APPLESMC_WRITE_CMD, APPLESMC_CMD_PORT); | |
239 | if (__wait_status(0x0c)) | |
240 | return -EIO; | |
241 | ||
242 | for (i = 0; i < 4; i++) { | |
243 | outb(key[i], APPLESMC_DATA_PORT); | |
244 | if (__wait_status(0x04)) | |
245 | return -EIO; | |
246 | } | |
247 | ||
248 | outb(len, APPLESMC_DATA_PORT); | |
249 | ||
250 | for (i = 0; i < len; i++) { | |
251 | if (__wait_status(0x04)) | |
252 | return -EIO; | |
253 | outb(buffer[i], APPLESMC_DATA_PORT); | |
254 | } | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
259 | /* | |
260 | * applesmc_get_key_at_index - get key at index, and put the result in key | |
261 | * (char[6]). Returns zero on success or a negative error on failure. Callers | |
262 | * must hold applesmc_lock. | |
263 | */ | |
264 | static int applesmc_get_key_at_index(int index, char* key) | |
265 | { | |
266 | int i; | |
267 | u8 readkey[4]; | |
268 | readkey[0] = index >> 24; | |
269 | readkey[1] = index >> 16; | |
270 | readkey[2] = index >> 8; | |
271 | readkey[3] = index; | |
272 | ||
273 | outb(APPLESMC_GET_KEY_BY_INDEX_CMD, APPLESMC_CMD_PORT); | |
274 | if (__wait_status(0x0c)) | |
275 | return -EIO; | |
276 | ||
277 | for (i = 0; i < 4; i++) { | |
278 | outb(readkey[i], APPLESMC_DATA_PORT); | |
279 | if (__wait_status(0x04)) | |
280 | return -EIO; | |
281 | } | |
282 | ||
283 | outb(4, APPLESMC_DATA_PORT); | |
284 | ||
285 | for (i = 0; i < 4; i++) { | |
286 | if (__wait_status(0x05)) | |
287 | return -EIO; | |
288 | key[i] = inb(APPLESMC_DATA_PORT); | |
289 | } | |
290 | key[4] = 0; | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | /* | |
296 | * applesmc_get_key_type - get key type, and put the result in type (char[6]). | |
297 | * Returns zero on success or a negative error on failure. Callers must | |
298 | * hold applesmc_lock. | |
299 | */ | |
300 | static int applesmc_get_key_type(char* key, char* type) | |
301 | { | |
302 | int i; | |
303 | ||
304 | outb(APPLESMC_GET_KEY_TYPE_CMD, APPLESMC_CMD_PORT); | |
305 | if (__wait_status(0x0c)) | |
306 | return -EIO; | |
307 | ||
308 | for (i = 0; i < 4; i++) { | |
309 | outb(key[i], APPLESMC_DATA_PORT); | |
310 | if (__wait_status(0x04)) | |
311 | return -EIO; | |
312 | } | |
313 | ||
314 | outb(5, APPLESMC_DATA_PORT); | |
315 | ||
316 | for (i = 0; i < 6; i++) { | |
317 | if (__wait_status(0x05)) | |
318 | return -EIO; | |
319 | type[i] = inb(APPLESMC_DATA_PORT); | |
320 | } | |
321 | type[5] = 0; | |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
326 | /* | |
327 | * applesmc_read_motion_sensor - Read motion sensor (X, Y or Z). Callers must | |
328 | * hold applesmc_lock. | |
329 | */ | |
330 | static int applesmc_read_motion_sensor(int index, s16* value) | |
331 | { | |
332 | u8 buffer[2]; | |
333 | int ret; | |
334 | ||
335 | switch (index) { | |
336 | case SENSOR_X: | |
337 | ret = applesmc_read_key(MOTION_SENSOR_X_KEY, buffer, 2); | |
338 | break; | |
339 | case SENSOR_Y: | |
340 | ret = applesmc_read_key(MOTION_SENSOR_Y_KEY, buffer, 2); | |
341 | break; | |
342 | case SENSOR_Z: | |
343 | ret = applesmc_read_key(MOTION_SENSOR_Z_KEY, buffer, 2); | |
344 | break; | |
345 | default: | |
346 | ret = -EINVAL; | |
347 | } | |
348 | ||
349 | *value = ((s16)buffer[0] << 8) | buffer[1]; | |
350 | ||
351 | return ret; | |
352 | } | |
353 | ||
354 | /* | |
355 | * applesmc_device_init - initialize the accelerometer. Returns zero on success | |
356 | * and negative error code on failure. Can sleep. | |
357 | */ | |
358 | static int applesmc_device_init(void) | |
359 | { | |
360 | int total, ret = -ENXIO; | |
361 | u8 buffer[2]; | |
362 | ||
363 | if (!applesmc_accelerometer) | |
364 | return 0; | |
365 | ||
366 | mutex_lock(&applesmc_lock); | |
367 | ||
368 | for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { | |
369 | if (debug) | |
370 | printk(KERN_DEBUG "applesmc try %d\n", total); | |
371 | if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) && | |
372 | (buffer[0] != 0x00 || buffer[1] != 0x00)) { | |
373 | if (total == INIT_TIMEOUT_MSECS) { | |
374 | printk(KERN_DEBUG "applesmc: device has" | |
375 | " already been initialized" | |
376 | " (0x%02x, 0x%02x).\n", | |
377 | buffer[0], buffer[1]); | |
378 | } else { | |
379 | printk(KERN_DEBUG "applesmc: device" | |
380 | " successfully initialized" | |
381 | " (0x%02x, 0x%02x).\n", | |
382 | buffer[0], buffer[1]); | |
383 | } | |
384 | ret = 0; | |
385 | goto out; | |
386 | } | |
387 | buffer[0] = 0xe0; | |
388 | buffer[1] = 0x00; | |
389 | applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2); | |
390 | msleep(INIT_WAIT_MSECS); | |
391 | } | |
392 | ||
393 | printk(KERN_WARNING "applesmc: failed to init the device\n"); | |
394 | ||
395 | out: | |
396 | mutex_unlock(&applesmc_lock); | |
397 | return ret; | |
398 | } | |
399 | ||
400 | /* | |
401 | * applesmc_get_fan_count - get the number of fans. Callers must NOT hold | |
402 | * applesmc_lock. | |
403 | */ | |
404 | static int applesmc_get_fan_count(void) | |
405 | { | |
406 | int ret; | |
407 | u8 buffer[1]; | |
408 | ||
409 | mutex_lock(&applesmc_lock); | |
410 | ||
411 | ret = applesmc_read_key(FANS_COUNT, buffer, 1); | |
412 | ||
413 | mutex_unlock(&applesmc_lock); | |
414 | if (ret) | |
415 | return ret; | |
416 | else | |
417 | return buffer[0]; | |
418 | } | |
419 | ||
420 | /* Device model stuff */ | |
421 | static int applesmc_probe(struct platform_device *dev) | |
422 | { | |
423 | int ret; | |
424 | ||
425 | ret = applesmc_device_init(); | |
426 | if (ret) | |
427 | return ret; | |
428 | ||
429 | printk(KERN_INFO "applesmc: device successfully initialized.\n"); | |
430 | return 0; | |
431 | } | |
432 | ||
433 | static int applesmc_resume(struct platform_device *dev) | |
434 | { | |
435 | return applesmc_device_init(); | |
436 | } | |
437 | ||
438 | static struct platform_driver applesmc_driver = { | |
439 | .probe = applesmc_probe, | |
440 | .resume = applesmc_resume, | |
441 | .driver = { | |
442 | .name = "applesmc", | |
443 | .owner = THIS_MODULE, | |
444 | }, | |
445 | }; | |
446 | ||
447 | /* | |
448 | * applesmc_calibrate - Set our "resting" values. Callers must | |
449 | * hold applesmc_lock. | |
450 | */ | |
451 | static void applesmc_calibrate(void) | |
452 | { | |
453 | applesmc_read_motion_sensor(SENSOR_X, &rest_x); | |
454 | applesmc_read_motion_sensor(SENSOR_Y, &rest_y); | |
455 | rest_x = -rest_x; | |
456 | } | |
457 | ||
458 | static int applesmc_idev_open(struct input_dev *dev) | |
459 | { | |
460 | add_timer(&applesmc_timer); | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
465 | static void applesmc_idev_close(struct input_dev *dev) | |
466 | { | |
467 | del_timer_sync(&applesmc_timer); | |
468 | } | |
469 | ||
470 | static void applesmc_idev_poll(unsigned long unused) | |
471 | { | |
472 | s16 x, y; | |
473 | ||
474 | /* Cannot sleep. Try nonblockingly. If we fail, try again later. */ | |
475 | if (!mutex_trylock(&applesmc_lock)) { | |
476 | mod_timer(&applesmc_timer, jiffies + APPLESMC_POLL_PERIOD); | |
477 | return; | |
478 | } | |
479 | ||
480 | if (applesmc_read_motion_sensor(SENSOR_X, &x)) | |
481 | goto out; | |
482 | if (applesmc_read_motion_sensor(SENSOR_Y, &y)) | |
483 | goto out; | |
484 | ||
485 | x = -x; | |
486 | input_report_abs(applesmc_idev, ABS_X, x - rest_x); | |
487 | input_report_abs(applesmc_idev, ABS_Y, y - rest_y); | |
488 | input_sync(applesmc_idev); | |
489 | ||
490 | out: | |
491 | mod_timer(&applesmc_timer, jiffies + APPLESMC_POLL_PERIOD); | |
492 | ||
493 | mutex_unlock(&applesmc_lock); | |
494 | } | |
495 | ||
496 | /* Sysfs Files */ | |
497 | ||
fa74419b NB |
498 | static ssize_t applesmc_name_show(struct device *dev, |
499 | struct device_attribute *attr, char *buf) | |
500 | { | |
501 | return snprintf(buf, PAGE_SIZE, "applesmc\n"); | |
502 | } | |
503 | ||
6f2fad74 NB |
504 | static ssize_t applesmc_position_show(struct device *dev, |
505 | struct device_attribute *attr, char *buf) | |
506 | { | |
507 | int ret; | |
508 | s16 x, y, z; | |
509 | ||
510 | mutex_lock(&applesmc_lock); | |
511 | ||
512 | ret = applesmc_read_motion_sensor(SENSOR_X, &x); | |
513 | if (ret) | |
514 | goto out; | |
515 | ret = applesmc_read_motion_sensor(SENSOR_Y, &y); | |
516 | if (ret) | |
517 | goto out; | |
518 | ret = applesmc_read_motion_sensor(SENSOR_Z, &z); | |
519 | if (ret) | |
520 | goto out; | |
521 | ||
522 | out: | |
523 | mutex_unlock(&applesmc_lock); | |
524 | if (ret) | |
525 | return ret; | |
526 | else | |
527 | return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z); | |
528 | } | |
529 | ||
530 | static ssize_t applesmc_light_show(struct device *dev, | |
531 | struct device_attribute *attr, char *sysfsbuf) | |
532 | { | |
533 | int ret; | |
534 | u8 left = 0, right = 0; | |
535 | u8 buffer[6]; | |
536 | ||
537 | mutex_lock(&applesmc_lock); | |
538 | ||
539 | ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, 6); | |
540 | left = buffer[2]; | |
541 | if (ret) | |
542 | goto out; | |
543 | ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, 6); | |
544 | right = buffer[2]; | |
545 | ||
546 | out: | |
547 | mutex_unlock(&applesmc_lock); | |
548 | if (ret) | |
549 | return ret; | |
550 | else | |
551 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right); | |
552 | } | |
553 | ||
554 | /* Displays degree Celsius * 1000 */ | |
555 | static ssize_t applesmc_show_temperature(struct device *dev, | |
556 | struct device_attribute *devattr, char *sysfsbuf) | |
557 | { | |
558 | int ret; | |
559 | u8 buffer[2]; | |
560 | unsigned int temp; | |
561 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
562 | const char* key = | |
563 | temperature_sensors_sets[applesmc_temperature_set][attr->index]; | |
564 | ||
565 | mutex_lock(&applesmc_lock); | |
566 | ||
567 | ret = applesmc_read_key(key, buffer, 2); | |
568 | temp = buffer[0]*1000; | |
569 | temp += (buffer[1] >> 6) * 250; | |
570 | ||
571 | mutex_unlock(&applesmc_lock); | |
572 | ||
573 | if (ret) | |
574 | return ret; | |
575 | else | |
576 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp); | |
577 | } | |
578 | ||
579 | static ssize_t applesmc_show_fan_speed(struct device *dev, | |
580 | struct device_attribute *attr, char *sysfsbuf) | |
581 | { | |
582 | int ret; | |
583 | unsigned int speed = 0; | |
584 | char newkey[5]; | |
585 | u8 buffer[2]; | |
586 | struct sensor_device_attribute_2 *sensor_attr = | |
587 | to_sensor_dev_attr_2(attr); | |
588 | ||
589 | newkey[0] = fan_speed_keys[sensor_attr->nr][0]; | |
590 | newkey[1] = '0' + sensor_attr->index; | |
591 | newkey[2] = fan_speed_keys[sensor_attr->nr][2]; | |
592 | newkey[3] = fan_speed_keys[sensor_attr->nr][3]; | |
593 | newkey[4] = 0; | |
594 | ||
595 | mutex_lock(&applesmc_lock); | |
596 | ||
597 | ret = applesmc_read_key(newkey, buffer, 2); | |
598 | speed = ((buffer[0] << 8 | buffer[1]) >> 2); | |
599 | ||
600 | mutex_unlock(&applesmc_lock); | |
601 | if (ret) | |
602 | return ret; | |
603 | else | |
604 | return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed); | |
605 | } | |
606 | ||
607 | static ssize_t applesmc_store_fan_speed(struct device *dev, | |
608 | struct device_attribute *attr, | |
609 | const char *sysfsbuf, size_t count) | |
610 | { | |
611 | int ret; | |
612 | u32 speed; | |
613 | char newkey[5]; | |
614 | u8 buffer[2]; | |
615 | struct sensor_device_attribute_2 *sensor_attr = | |
616 | to_sensor_dev_attr_2(attr); | |
617 | ||
618 | speed = simple_strtoul(sysfsbuf, NULL, 10); | |
619 | ||
620 | if (speed > 0x4000) /* Bigger than a 14-bit value */ | |
621 | return -EINVAL; | |
622 | ||
623 | newkey[0] = fan_speed_keys[sensor_attr->nr][0]; | |
624 | newkey[1] = '0' + sensor_attr->index; | |
625 | newkey[2] = fan_speed_keys[sensor_attr->nr][2]; | |
626 | newkey[3] = fan_speed_keys[sensor_attr->nr][3]; | |
627 | newkey[4] = 0; | |
628 | ||
629 | mutex_lock(&applesmc_lock); | |
630 | ||
631 | buffer[0] = (speed >> 6) & 0xff; | |
632 | buffer[1] = (speed << 2) & 0xff; | |
633 | ret = applesmc_write_key(newkey, buffer, 2); | |
634 | ||
635 | mutex_unlock(&applesmc_lock); | |
636 | if (ret) | |
637 | return ret; | |
638 | else | |
639 | return count; | |
640 | } | |
641 | ||
642 | static ssize_t applesmc_show_fan_manual(struct device *dev, | |
643 | struct device_attribute *devattr, char *sysfsbuf) | |
644 | { | |
645 | int ret; | |
646 | u16 manual = 0; | |
647 | u8 buffer[2]; | |
648 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
649 | ||
650 | mutex_lock(&applesmc_lock); | |
651 | ||
652 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); | |
653 | manual = ((buffer[0] << 8 | buffer[1]) >> attr->index) & 0x01; | |
654 | ||
655 | mutex_unlock(&applesmc_lock); | |
656 | if (ret) | |
657 | return ret; | |
658 | else | |
659 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual); | |
660 | } | |
661 | ||
662 | static ssize_t applesmc_store_fan_manual(struct device *dev, | |
663 | struct device_attribute *devattr, | |
664 | const char *sysfsbuf, size_t count) | |
665 | { | |
666 | int ret; | |
667 | u8 buffer[2]; | |
668 | u32 input; | |
669 | u16 val; | |
670 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
671 | ||
672 | input = simple_strtoul(sysfsbuf, NULL, 10); | |
673 | ||
674 | mutex_lock(&applesmc_lock); | |
675 | ||
676 | ret = applesmc_read_key(FANS_MANUAL, buffer, 2); | |
677 | val = (buffer[0] << 8 | buffer[1]); | |
678 | if (ret) | |
679 | goto out; | |
680 | ||
681 | if (input) | |
682 | val = val | (0x01 << attr->index); | |
683 | else | |
684 | val = val & ~(0x01 << attr->index); | |
685 | ||
686 | buffer[0] = (val >> 8) & 0xFF; | |
687 | buffer[1] = val & 0xFF; | |
688 | ||
689 | ret = applesmc_write_key(FANS_MANUAL, buffer, 2); | |
690 | ||
691 | out: | |
692 | mutex_unlock(&applesmc_lock); | |
693 | if (ret) | |
694 | return ret; | |
695 | else | |
696 | return count; | |
697 | } | |
698 | ||
699 | static ssize_t applesmc_show_fan_position(struct device *dev, | |
700 | struct device_attribute *attr, char *sysfsbuf) | |
701 | { | |
702 | int ret; | |
703 | char newkey[5]; | |
704 | u8 buffer[17]; | |
705 | struct sensor_device_attribute_2 *sensor_attr = | |
706 | to_sensor_dev_attr_2(attr); | |
707 | ||
708 | newkey[0] = FAN_POSITION[0]; | |
709 | newkey[1] = '0' + sensor_attr->index; | |
710 | newkey[2] = FAN_POSITION[2]; | |
711 | newkey[3] = FAN_POSITION[3]; | |
712 | newkey[4] = 0; | |
713 | ||
714 | mutex_lock(&applesmc_lock); | |
715 | ||
716 | ret = applesmc_read_key(newkey, buffer, 16); | |
717 | buffer[16] = 0; | |
718 | ||
719 | mutex_unlock(&applesmc_lock); | |
720 | if (ret) | |
721 | return ret; | |
722 | else | |
723 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4); | |
724 | } | |
725 | ||
726 | static ssize_t applesmc_calibrate_show(struct device *dev, | |
727 | struct device_attribute *attr, char *sysfsbuf) | |
728 | { | |
729 | return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y); | |
730 | } | |
731 | ||
732 | static ssize_t applesmc_calibrate_store(struct device *dev, | |
733 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
734 | { | |
735 | mutex_lock(&applesmc_lock); | |
736 | applesmc_calibrate(); | |
737 | mutex_unlock(&applesmc_lock); | |
738 | ||
739 | return count; | |
740 | } | |
741 | ||
742 | /* Store the next backlight value to be written by the work */ | |
743 | static unsigned int backlight_value; | |
744 | ||
745 | static void applesmc_backlight_set(struct work_struct *work) | |
746 | { | |
747 | u8 buffer[2]; | |
748 | ||
749 | mutex_lock(&applesmc_lock); | |
750 | buffer[0] = backlight_value; | |
751 | buffer[1] = 0x00; | |
752 | applesmc_write_key(BACKLIGHT_KEY, buffer, 2); | |
753 | mutex_unlock(&applesmc_lock); | |
754 | } | |
755 | static DECLARE_WORK(backlight_work, &applesmc_backlight_set); | |
756 | ||
757 | static void applesmc_brightness_set(struct led_classdev *led_cdev, | |
758 | enum led_brightness value) | |
759 | { | |
760 | int ret; | |
761 | ||
762 | backlight_value = value; | |
763 | ret = queue_work(applesmc_led_wq, &backlight_work); | |
764 | ||
765 | if (debug && (!ret)) | |
766 | printk(KERN_DEBUG "applesmc: work was already on the queue.\n"); | |
767 | } | |
768 | ||
769 | static ssize_t applesmc_key_count_show(struct device *dev, | |
770 | struct device_attribute *attr, char *sysfsbuf) | |
771 | { | |
772 | int ret; | |
773 | u8 buffer[4]; | |
774 | u32 count; | |
775 | ||
776 | mutex_lock(&applesmc_lock); | |
777 | ||
778 | ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4); | |
779 | count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) + | |
780 | ((u32)buffer[2]<<8) + buffer[3]; | |
781 | ||
782 | mutex_unlock(&applesmc_lock); | |
783 | if (ret) | |
784 | return ret; | |
785 | else | |
786 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count); | |
787 | } | |
788 | ||
789 | static ssize_t applesmc_key_at_index_read_show(struct device *dev, | |
790 | struct device_attribute *attr, char *sysfsbuf) | |
791 | { | |
792 | char key[5]; | |
793 | char info[6]; | |
794 | int ret; | |
795 | ||
796 | mutex_lock(&applesmc_lock); | |
797 | ||
798 | ret = applesmc_get_key_at_index(key_at_index, key); | |
799 | ||
800 | if (ret || !key[0]) { | |
801 | mutex_unlock(&applesmc_lock); | |
802 | ||
803 | return -EINVAL; | |
804 | } | |
805 | ||
806 | ret = applesmc_get_key_type(key, info); | |
807 | ||
808 | if (ret) { | |
809 | mutex_unlock(&applesmc_lock); | |
810 | ||
811 | return ret; | |
812 | } | |
813 | ||
814 | /* | |
815 | * info[0] maximum value (APPLESMC_MAX_DATA_LENGTH) is much lower than | |
816 | * PAGE_SIZE, so we don't need any checks before writing to sysfsbuf. | |
817 | */ | |
818 | ret = applesmc_read_key(key, sysfsbuf, info[0]); | |
819 | ||
820 | mutex_unlock(&applesmc_lock); | |
821 | ||
822 | if (!ret) { | |
823 | return info[0]; | |
824 | } | |
825 | else { | |
826 | return ret; | |
827 | } | |
828 | } | |
829 | ||
830 | static ssize_t applesmc_key_at_index_data_length_show(struct device *dev, | |
831 | struct device_attribute *attr, char *sysfsbuf) | |
832 | { | |
833 | char key[5]; | |
834 | char info[6]; | |
835 | int ret; | |
836 | ||
837 | mutex_lock(&applesmc_lock); | |
838 | ||
839 | ret = applesmc_get_key_at_index(key_at_index, key); | |
840 | ||
841 | if (ret || !key[0]) { | |
842 | mutex_unlock(&applesmc_lock); | |
843 | ||
844 | return -EINVAL; | |
845 | } | |
846 | ||
847 | ret = applesmc_get_key_type(key, info); | |
848 | ||
849 | mutex_unlock(&applesmc_lock); | |
850 | ||
851 | if (!ret) | |
852 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", info[0]); | |
853 | else | |
854 | return ret; | |
855 | } | |
856 | ||
857 | static ssize_t applesmc_key_at_index_type_show(struct device *dev, | |
858 | struct device_attribute *attr, char *sysfsbuf) | |
859 | { | |
860 | char key[5]; | |
861 | char info[6]; | |
862 | int ret; | |
863 | ||
864 | mutex_lock(&applesmc_lock); | |
865 | ||
866 | ret = applesmc_get_key_at_index(key_at_index, key); | |
867 | ||
868 | if (ret || !key[0]) { | |
869 | mutex_unlock(&applesmc_lock); | |
870 | ||
871 | return -EINVAL; | |
872 | } | |
873 | ||
874 | ret = applesmc_get_key_type(key, info); | |
875 | ||
876 | mutex_unlock(&applesmc_lock); | |
877 | ||
878 | if (!ret) | |
879 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", info+1); | |
880 | else | |
881 | return ret; | |
882 | } | |
883 | ||
884 | static ssize_t applesmc_key_at_index_name_show(struct device *dev, | |
885 | struct device_attribute *attr, char *sysfsbuf) | |
886 | { | |
887 | char key[5]; | |
888 | int ret; | |
889 | ||
890 | mutex_lock(&applesmc_lock); | |
891 | ||
892 | ret = applesmc_get_key_at_index(key_at_index, key); | |
893 | ||
894 | mutex_unlock(&applesmc_lock); | |
895 | ||
896 | if (!ret && key[0]) | |
897 | return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key); | |
898 | else | |
899 | return -EINVAL; | |
900 | } | |
901 | ||
902 | static ssize_t applesmc_key_at_index_show(struct device *dev, | |
903 | struct device_attribute *attr, char *sysfsbuf) | |
904 | { | |
905 | return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index); | |
906 | } | |
907 | ||
908 | static ssize_t applesmc_key_at_index_store(struct device *dev, | |
909 | struct device_attribute *attr, const char *sysfsbuf, size_t count) | |
910 | { | |
911 | mutex_lock(&applesmc_lock); | |
912 | ||
913 | key_at_index = simple_strtoul(sysfsbuf, NULL, 10); | |
914 | ||
915 | mutex_unlock(&applesmc_lock); | |
916 | ||
917 | return count; | |
918 | } | |
919 | ||
920 | static struct led_classdev applesmc_backlight = { | |
921 | .name = "smc:kbd_backlight", | |
922 | .default_trigger = "nand-disk", | |
923 | .brightness_set = applesmc_brightness_set, | |
924 | }; | |
925 | ||
fa74419b NB |
926 | static DEVICE_ATTR(name, 0444, applesmc_name_show, NULL); |
927 | ||
6f2fad74 NB |
928 | static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL); |
929 | static DEVICE_ATTR(calibrate, 0644, | |
930 | applesmc_calibrate_show, applesmc_calibrate_store); | |
931 | ||
932 | static struct attribute *accelerometer_attributes[] = { | |
933 | &dev_attr_position.attr, | |
934 | &dev_attr_calibrate.attr, | |
935 | NULL | |
936 | }; | |
937 | ||
938 | static const struct attribute_group accelerometer_attributes_group = | |
939 | { .attrs = accelerometer_attributes }; | |
940 | ||
941 | static DEVICE_ATTR(light, 0444, applesmc_light_show, NULL); | |
942 | ||
943 | static DEVICE_ATTR(key_count, 0444, applesmc_key_count_show, NULL); | |
944 | static DEVICE_ATTR(key_at_index, 0644, | |
945 | applesmc_key_at_index_show, applesmc_key_at_index_store); | |
946 | static DEVICE_ATTR(key_at_index_name, 0444, | |
947 | applesmc_key_at_index_name_show, NULL); | |
948 | static DEVICE_ATTR(key_at_index_type, 0444, | |
949 | applesmc_key_at_index_type_show, NULL); | |
950 | static DEVICE_ATTR(key_at_index_data_length, 0444, | |
951 | applesmc_key_at_index_data_length_show, NULL); | |
952 | static DEVICE_ATTR(key_at_index_data, 0444, | |
953 | applesmc_key_at_index_read_show, NULL); | |
954 | ||
955 | static struct attribute *key_enumeration_attributes[] = { | |
956 | &dev_attr_key_count.attr, | |
957 | &dev_attr_key_at_index.attr, | |
958 | &dev_attr_key_at_index_name.attr, | |
959 | &dev_attr_key_at_index_type.attr, | |
960 | &dev_attr_key_at_index_data_length.attr, | |
961 | &dev_attr_key_at_index_data.attr, | |
962 | NULL | |
963 | }; | |
964 | ||
965 | static const struct attribute_group key_enumeration_group = | |
966 | { .attrs = key_enumeration_attributes }; | |
967 | ||
968 | /* | |
969 | * Macro defining SENSOR_DEVICE_ATTR for a fan sysfs entries. | |
970 | * - show actual speed | |
971 | * - show/store minimum speed | |
972 | * - show maximum speed | |
973 | * - show safe speed | |
974 | * - show/store target speed | |
975 | * - show/store manual mode | |
976 | */ | |
977 | #define sysfs_fan_speeds_offset(offset) \ | |
978 | static SENSOR_DEVICE_ATTR_2(fan##offset##_input, S_IRUGO, \ | |
979 | applesmc_show_fan_speed, NULL, 0, offset-1); \ | |
980 | \ | |
981 | static SENSOR_DEVICE_ATTR_2(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
982 | applesmc_show_fan_speed, applesmc_store_fan_speed, 1, offset-1); \ | |
983 | \ | |
984 | static SENSOR_DEVICE_ATTR_2(fan##offset##_max, S_IRUGO, \ | |
985 | applesmc_show_fan_speed, NULL, 2, offset-1); \ | |
986 | \ | |
987 | static SENSOR_DEVICE_ATTR_2(fan##offset##_safe, S_IRUGO, \ | |
988 | applesmc_show_fan_speed, NULL, 3, offset-1); \ | |
989 | \ | |
990 | static SENSOR_DEVICE_ATTR_2(fan##offset##_output, S_IRUGO | S_IWUSR, \ | |
991 | applesmc_show_fan_speed, applesmc_store_fan_speed, 4, offset-1); \ | |
992 | \ | |
993 | static SENSOR_DEVICE_ATTR(fan##offset##_manual, S_IRUGO | S_IWUSR, \ | |
994 | applesmc_show_fan_manual, applesmc_store_fan_manual, offset-1); \ | |
995 | \ | |
da4e8ca3 | 996 | static SENSOR_DEVICE_ATTR(fan##offset##_label, S_IRUGO, \ |
6f2fad74 NB |
997 | applesmc_show_fan_position, NULL, offset-1); \ |
998 | \ | |
999 | static struct attribute *fan##offset##_attributes[] = { \ | |
1000 | &sensor_dev_attr_fan##offset##_input.dev_attr.attr, \ | |
1001 | &sensor_dev_attr_fan##offset##_min.dev_attr.attr, \ | |
1002 | &sensor_dev_attr_fan##offset##_max.dev_attr.attr, \ | |
1003 | &sensor_dev_attr_fan##offset##_safe.dev_attr.attr, \ | |
1004 | &sensor_dev_attr_fan##offset##_output.dev_attr.attr, \ | |
1005 | &sensor_dev_attr_fan##offset##_manual.dev_attr.attr, \ | |
da4e8ca3 | 1006 | &sensor_dev_attr_fan##offset##_label.dev_attr.attr, \ |
6f2fad74 NB |
1007 | NULL \ |
1008 | }; | |
1009 | ||
1010 | /* | |
1011 | * Create the needed functions for each fan using the macro defined above | |
1012 | * (2 fans are supported) | |
1013 | */ | |
1014 | sysfs_fan_speeds_offset(1); | |
1015 | sysfs_fan_speeds_offset(2); | |
1016 | ||
1017 | static const struct attribute_group fan_attribute_groups[] = { | |
1018 | { .attrs = fan1_attributes }, | |
1019 | { .attrs = fan2_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 | ||
1050 | static struct attribute *temperature_attributes[] = { | |
1051 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
1052 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
1053 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
1054 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
1055 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
1056 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
1057 | &sensor_dev_attr_temp7_input.dev_attr.attr, | |
1058 | &sensor_dev_attr_temp8_input.dev_attr.attr, | |
1059 | &sensor_dev_attr_temp9_input.dev_attr.attr, | |
1060 | &sensor_dev_attr_temp10_input.dev_attr.attr, | |
1061 | &sensor_dev_attr_temp11_input.dev_attr.attr, | |
1062 | &sensor_dev_attr_temp12_input.dev_attr.attr, | |
1063 | NULL | |
1064 | }; | |
1065 | ||
1066 | static const struct attribute_group temperature_attributes_group = | |
1067 | { .attrs = temperature_attributes }; | |
1068 | ||
1069 | /* Module stuff */ | |
1070 | ||
1071 | /* | |
1072 | * applesmc_dmi_match - found a match. return one, short-circuiting the hunt. | |
1073 | */ | |
1074 | static int applesmc_dmi_match(struct dmi_system_id *id) | |
1075 | { | |
1076 | int i = 0; | |
1077 | struct dmi_match_data* dmi_data = id->driver_data; | |
1078 | printk(KERN_INFO "applesmc: %s detected:\n", id->ident); | |
1079 | applesmc_accelerometer = dmi_data->accelerometer; | |
1080 | printk(KERN_INFO "applesmc: - Model %s accelerometer\n", | |
1081 | applesmc_accelerometer ? "with" : "without"); | |
1082 | applesmc_light = dmi_data->light; | |
1083 | printk(KERN_INFO "applesmc: - Model %s light sensors and backlight\n", | |
1084 | applesmc_light ? "with" : "without"); | |
1085 | ||
1086 | applesmc_temperature_set = dmi_data->temperature_set; | |
1087 | while (temperature_sensors_sets[applesmc_temperature_set][i] != NULL) | |
1088 | i++; | |
1089 | printk(KERN_INFO "applesmc: - Model with %d temperature sensors\n", i); | |
1090 | return 1; | |
1091 | } | |
1092 | ||
1093 | /* Create accelerometer ressources */ | |
1094 | static int applesmc_create_accelerometer(void) | |
1095 | { | |
1096 | int ret; | |
1097 | ||
1098 | ret = sysfs_create_group(&pdev->dev.kobj, | |
1099 | &accelerometer_attributes_group); | |
1100 | if (ret) | |
1101 | goto out; | |
1102 | ||
1103 | applesmc_idev = input_allocate_device(); | |
1104 | if (!applesmc_idev) { | |
1105 | ret = -ENOMEM; | |
1106 | goto out_sysfs; | |
1107 | } | |
1108 | ||
1109 | /* initial calibrate for the input device */ | |
1110 | applesmc_calibrate(); | |
1111 | ||
1112 | /* initialize the input class */ | |
1113 | applesmc_idev->name = "applesmc"; | |
1114 | applesmc_idev->id.bustype = BUS_HOST; | |
c5ddb547 | 1115 | applesmc_idev->dev.parent = &pdev->dev; |
6f2fad74 NB |
1116 | applesmc_idev->evbit[0] = BIT(EV_ABS); |
1117 | applesmc_idev->open = applesmc_idev_open; | |
1118 | applesmc_idev->close = applesmc_idev_close; | |
1119 | input_set_abs_params(applesmc_idev, ABS_X, | |
1120 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); | |
1121 | input_set_abs_params(applesmc_idev, ABS_Y, | |
1122 | -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT); | |
1123 | ||
1124 | ret = input_register_device(applesmc_idev); | |
1125 | if (ret) | |
1126 | goto out_idev; | |
1127 | ||
1128 | /* start up our timer for the input device */ | |
1129 | init_timer(&applesmc_timer); | |
1130 | applesmc_timer.function = applesmc_idev_poll; | |
1131 | applesmc_timer.expires = jiffies + APPLESMC_POLL_PERIOD; | |
1132 | ||
1133 | return 0; | |
1134 | ||
1135 | out_idev: | |
1136 | input_free_device(applesmc_idev); | |
1137 | ||
1138 | out_sysfs: | |
1139 | sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group); | |
1140 | ||
1141 | out: | |
1142 | printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret); | |
1143 | return ret; | |
1144 | } | |
1145 | ||
1146 | /* Release all ressources used by the accelerometer */ | |
1147 | static void applesmc_release_accelerometer(void) | |
1148 | { | |
1149 | del_timer_sync(&applesmc_timer); | |
1150 | input_unregister_device(applesmc_idev); | |
1151 | sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group); | |
1152 | } | |
1153 | ||
1154 | static __initdata struct dmi_match_data applesmc_dmi_data[] = { | |
1155 | /* MacBook Pro: accelerometer, backlight and temperature set 0 */ | |
1156 | { .accelerometer = 1, .light = 1, .temperature_set = 0 }, | |
1bed24b9 MS |
1157 | /* MacBook: accelerometer and temperature set 1 */ |
1158 | { .accelerometer = 1, .light = 0, .temperature_set = 1 }, | |
1159 | /* MacMini: temperature set 2 */ | |
1160 | { .accelerometer = 0, .light = 0, .temperature_set = 2 }, | |
6f2fad74 NB |
1161 | }; |
1162 | ||
1163 | /* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1". | |
1164 | * So we need to put "Apple MacBook Pro" before "Apple MacBook". */ | |
1165 | static __initdata struct dmi_system_id applesmc_whitelist[] = { | |
1166 | { applesmc_dmi_match, "Apple MacBook Pro", { | |
1167 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1168 | DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro") }, | |
1169 | (void*)&applesmc_dmi_data[0]}, | |
1170 | { applesmc_dmi_match, "Apple MacBook", { | |
1171 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1172 | DMI_MATCH(DMI_PRODUCT_NAME,"MacBook") }, | |
1173 | (void*)&applesmc_dmi_data[1]}, | |
1174 | { applesmc_dmi_match, "Apple Macmini", { | |
1175 | DMI_MATCH(DMI_BOARD_VENDOR,"Apple"), | |
1176 | DMI_MATCH(DMI_PRODUCT_NAME,"Macmini") }, | |
1177 | (void*)&applesmc_dmi_data[2]}, | |
1178 | { .ident = NULL } | |
1179 | }; | |
1180 | ||
1181 | static int __init applesmc_init(void) | |
1182 | { | |
1183 | int ret; | |
1184 | int count; | |
1185 | int i; | |
1186 | ||
1187 | mutex_init(&applesmc_lock); | |
1188 | ||
1189 | if (!dmi_check_system(applesmc_whitelist)) { | |
1190 | printk(KERN_WARNING "applesmc: supported laptop not found!\n"); | |
1191 | ret = -ENODEV; | |
1192 | goto out; | |
1193 | } | |
1194 | ||
1195 | if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS, | |
1196 | "applesmc")) { | |
1197 | ret = -ENXIO; | |
1198 | goto out; | |
1199 | } | |
1200 | ||
1201 | ret = platform_driver_register(&applesmc_driver); | |
1202 | if (ret) | |
1203 | goto out_region; | |
1204 | ||
ddfbf2af JD |
1205 | pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT, |
1206 | NULL, 0); | |
6f2fad74 NB |
1207 | if (IS_ERR(pdev)) { |
1208 | ret = PTR_ERR(pdev); | |
1209 | goto out_driver; | |
1210 | } | |
1211 | ||
fa74419b | 1212 | ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_name.attr); |
6996abf0 NB |
1213 | if (ret) |
1214 | goto out_device; | |
fa74419b | 1215 | |
6f2fad74 NB |
1216 | /* Create key enumeration sysfs files */ |
1217 | ret = sysfs_create_group(&pdev->dev.kobj, &key_enumeration_group); | |
1218 | if (ret) | |
6996abf0 | 1219 | goto out_name; |
6f2fad74 NB |
1220 | |
1221 | /* create fan files */ | |
1222 | count = applesmc_get_fan_count(); | |
1223 | if (count < 0) { | |
1224 | printk(KERN_ERR "applesmc: Cannot get the number of fans.\n"); | |
1225 | } else { | |
1226 | printk(KERN_INFO "applesmc: %d fans found.\n", count); | |
1227 | ||
1228 | switch (count) { | |
1229 | default: | |
1230 | printk(KERN_WARNING "applesmc: More than 2 fans found," | |
1231 | " but at most 2 fans are supported" | |
1232 | " by the driver.\n"); | |
1233 | case 2: | |
1234 | ret = sysfs_create_group(&pdev->dev.kobj, | |
1235 | &fan_attribute_groups[1]); | |
1236 | if (ret) | |
1237 | goto out_key_enumeration; | |
1238 | case 1: | |
1239 | ret = sysfs_create_group(&pdev->dev.kobj, | |
1240 | &fan_attribute_groups[0]); | |
1241 | if (ret) | |
1242 | goto out_fan_1; | |
1243 | case 0: | |
1244 | ; | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | for (i = 0; | |
1249 | temperature_sensors_sets[applesmc_temperature_set][i] != NULL; | |
1250 | i++) { | |
1251 | if (temperature_attributes[i] == NULL) { | |
1252 | printk(KERN_ERR "applesmc: More temperature sensors " | |
1253 | "in temperature_sensors_sets (at least %i)" | |
1254 | "than available sysfs files in " | |
1255 | "temperature_attributes (%i), please report " | |
1256 | "this bug.\n", i, i-1); | |
1257 | goto out_temperature; | |
1258 | } | |
1259 | ret = sysfs_create_file(&pdev->dev.kobj, | |
1260 | temperature_attributes[i]); | |
1261 | if (ret) | |
1262 | goto out_temperature; | |
1263 | } | |
1264 | ||
1265 | if (applesmc_accelerometer) { | |
1266 | ret = applesmc_create_accelerometer(); | |
1267 | if (ret) | |
1268 | goto out_temperature; | |
1269 | } | |
1270 | ||
1271 | if (applesmc_light) { | |
1272 | /* Add light sensor file */ | |
1273 | ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_light.attr); | |
1274 | if (ret) | |
1275 | goto out_accelerometer; | |
1276 | ||
1277 | /* Create the workqueue */ | |
1278 | applesmc_led_wq = create_singlethread_workqueue("applesmc-led"); | |
1279 | if (!applesmc_led_wq) { | |
1280 | ret = -ENOMEM; | |
1281 | goto out_light_sysfs; | |
1282 | } | |
1283 | ||
1284 | /* register as a led device */ | |
1285 | ret = led_classdev_register(&pdev->dev, &applesmc_backlight); | |
1286 | if (ret < 0) | |
1287 | goto out_light_wq; | |
1288 | } | |
1289 | ||
1290 | hwmon_class_dev = hwmon_device_register(&pdev->dev); | |
1291 | if (IS_ERR(hwmon_class_dev)) { | |
1292 | ret = PTR_ERR(hwmon_class_dev); | |
1293 | goto out_light_ledclass; | |
1294 | } | |
1295 | ||
1296 | printk(KERN_INFO "applesmc: driver successfully loaded.\n"); | |
1297 | ||
1298 | return 0; | |
1299 | ||
1300 | out_light_ledclass: | |
1301 | if (applesmc_light) | |
1302 | led_classdev_unregister(&applesmc_backlight); | |
1303 | out_light_wq: | |
1304 | if (applesmc_light) | |
1305 | destroy_workqueue(applesmc_led_wq); | |
1306 | out_light_sysfs: | |
1307 | if (applesmc_light) | |
1308 | sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr); | |
1309 | out_accelerometer: | |
1310 | if (applesmc_accelerometer) | |
1311 | applesmc_release_accelerometer(); | |
1312 | out_temperature: | |
1313 | sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group); | |
1314 | sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]); | |
1315 | out_fan_1: | |
1316 | sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]); | |
1317 | out_key_enumeration: | |
1318 | sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group); | |
6996abf0 NB |
1319 | out_name: |
1320 | sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr); | |
6f2fad74 NB |
1321 | out_device: |
1322 | platform_device_unregister(pdev); | |
1323 | out_driver: | |
1324 | platform_driver_unregister(&applesmc_driver); | |
1325 | out_region: | |
1326 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
1327 | out: | |
1328 | printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret); | |
1329 | return ret; | |
1330 | } | |
1331 | ||
1332 | static void __exit applesmc_exit(void) | |
1333 | { | |
1334 | hwmon_device_unregister(hwmon_class_dev); | |
1335 | if (applesmc_light) { | |
1336 | led_classdev_unregister(&applesmc_backlight); | |
1337 | destroy_workqueue(applesmc_led_wq); | |
1338 | sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr); | |
1339 | } | |
1340 | if (applesmc_accelerometer) | |
1341 | applesmc_release_accelerometer(); | |
1342 | sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group); | |
1343 | sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]); | |
1344 | sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]); | |
1345 | sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group); | |
6996abf0 | 1346 | sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr); |
6f2fad74 NB |
1347 | platform_device_unregister(pdev); |
1348 | platform_driver_unregister(&applesmc_driver); | |
1349 | release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS); | |
1350 | ||
1351 | printk(KERN_INFO "applesmc: driver unloaded.\n"); | |
1352 | } | |
1353 | ||
1354 | module_init(applesmc_init); | |
1355 | module_exit(applesmc_exit); | |
1356 | ||
1357 | MODULE_AUTHOR("Nicolas Boichat"); | |
1358 | MODULE_DESCRIPTION("Apple SMC"); | |
1359 | MODULE_LICENSE("GPL v2"); |