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1da177e4 LT |
1 | /* |
2 | * asus_acpi.c - Asus Laptop ACPI Extras | |
3 | * | |
4 | * | |
5 | * Copyright (C) 2002, 2003, 2004 Julien Lerouge, Karol Kozimor | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * | |
22 | * The development page for this driver is located at | |
23 | * http://sourceforge.net/projects/acpi4asus/ | |
24 | * | |
25 | * Credits: | |
26 | * Pontus Fuchs - Helper functions, cleanup | |
27 | * Johann Wiesner - Small compile fixes | |
28 | * John Belmonte - ACPI code for Toshiba laptop was a good starting point. | |
29 | * | |
30 | * TODO: | |
31 | * add Fn key status | |
32 | * Add mode selection on module loading (parameter) -> still necessary? | |
33 | * Complete display switching -- may require dirty hacks or calling _DOS? | |
34 | */ | |
35 | ||
36 | #include <linux/kernel.h> | |
37 | #include <linux/module.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/types.h> | |
40 | #include <linux/proc_fs.h> | |
41 | #include <acpi/acpi_drivers.h> | |
42 | #include <acpi/acpi_bus.h> | |
43 | #include <asm/uaccess.h> | |
44 | ||
45 | #define ASUS_ACPI_VERSION "0.29" | |
46 | ||
47 | #define PROC_ASUS "asus" //the directory | |
48 | #define PROC_MLED "mled" | |
49 | #define PROC_WLED "wled" | |
50 | #define PROC_TLED "tled" | |
51 | #define PROC_INFO "info" | |
52 | #define PROC_LCD "lcd" | |
53 | #define PROC_BRN "brn" | |
54 | #define PROC_DISP "disp" | |
55 | ||
56 | #define ACPI_HOTK_NAME "Asus Laptop ACPI Extras Driver" | |
57 | #define ACPI_HOTK_CLASS "hotkey" | |
58 | #define ACPI_HOTK_DEVICE_NAME "Hotkey" | |
59 | #define ACPI_HOTK_HID "ATK0100" | |
60 | ||
61 | /* | |
62 | * Some events we use, same for all Asus | |
63 | */ | |
64 | #define BR_UP 0x10 | |
65 | #define BR_DOWN 0x20 | |
66 | ||
67 | /* | |
68 | * Flags for hotk status | |
69 | */ | |
70 | #define MLED_ON 0x01 //is MLED ON ? | |
71 | #define WLED_ON 0x02 | |
72 | #define TLED_ON 0x04 | |
73 | ||
74 | MODULE_AUTHOR("Julien Lerouge, Karol Kozimor"); | |
75 | MODULE_DESCRIPTION(ACPI_HOTK_NAME); | |
76 | MODULE_LICENSE("GPL"); | |
77 | ||
78 | ||
79 | static uid_t asus_uid; | |
80 | static gid_t asus_gid; | |
81 | module_param(asus_uid, uint, 0); | |
82 | MODULE_PARM_DESC(uid, "UID for entries in /proc/acpi/asus.\n"); | |
83 | module_param(asus_gid, uint, 0); | |
84 | MODULE_PARM_DESC(gid, "GID for entries in /proc/acpi/asus.\n"); | |
85 | ||
86 | ||
87 | /* For each model, all features implemented, | |
88 | * those marked with R are relative to HOTK, A for absolute */ | |
89 | struct model_data { | |
90 | char *name; //name of the laptop________________A | |
91 | char *mt_mled; //method to handle mled_____________R | |
92 | char *mled_status; //node to handle mled reading_______A | |
93 | char *mt_wled; //method to handle wled_____________R | |
94 | char *wled_status; //node to handle wled reading_______A | |
95 | char *mt_tled; //method to handle tled_____________R | |
96 | char *tled_status; //node to handle tled reading_______A | |
97 | char *mt_lcd_switch; //method to turn LCD ON/OFF_________A | |
98 | char *lcd_status; //node to read LCD panel state______A | |
99 | char *brightness_up; //method to set brightness up_______A | |
100 | char *brightness_down; //guess what ?______________________A | |
101 | char *brightness_set; //method to set absolute brightness_R | |
102 | char *brightness_get; //method to get absolute brightness_R | |
103 | char *brightness_status; //node to get brightness____________A | |
104 | char *display_set; //method to set video output________R | |
105 | char *display_get; //method to get video output________R | |
106 | }; | |
107 | ||
108 | /* | |
109 | * This is the main structure, we can use it to store anything interesting | |
110 | * about the hotk device | |
111 | */ | |
112 | struct asus_hotk { | |
113 | struct acpi_device *device; //the device we are in | |
114 | acpi_handle handle; //the handle of the hotk device | |
115 | char status; //status of the hotk, for LEDs, ... | |
116 | struct model_data *methods; //methods available on the laptop | |
117 | u8 brightness; //brightness level | |
118 | enum { | |
119 | A1x = 0, //A1340D, A1300F | |
120 | A2x, //A2500H | |
121 | D1x, //D1 | |
122 | L2D, //L2000D | |
123 | L3C, //L3800C | |
124 | L3D, //L3400D | |
125 | L3H, //L3H, but also L2000E | |
126 | L4R, //L4500R | |
127 | L5x, //L5800C | |
128 | L8L, //L8400L | |
129 | M1A, //M1300A | |
130 | M2E, //M2400E, L4400L | |
131 | M6N, //M6800N | |
132 | M6R, //M6700R | |
133 | P30, //Samsung P30 | |
134 | S1x, //S1300A, but also L1400B and M2400A (L84F) | |
135 | S2x, //S200 (J1 reported), Victor MP-XP7210 | |
136 | xxN, //M2400N, M3700N, M5200N, S1300N, S5200N, W1OOON | |
137 | //(Centrino) | |
138 | END_MODEL | |
139 | } model; //Models currently supported | |
140 | u16 event_count[128]; //count for each event TODO make this better | |
141 | }; | |
142 | ||
143 | /* Here we go */ | |
144 | #define A1x_PREFIX "\\_SB.PCI0.ISA.EC0." | |
145 | #define L3C_PREFIX "\\_SB.PCI0.PX40.ECD0." | |
146 | #define M1A_PREFIX "\\_SB.PCI0.PX40.EC0." | |
147 | #define P30_PREFIX "\\_SB.PCI0.LPCB.EC0." | |
148 | #define S1x_PREFIX "\\_SB.PCI0.PX40." | |
149 | #define S2x_PREFIX A1x_PREFIX | |
150 | #define xxN_PREFIX "\\_SB.PCI0.SBRG.EC0." | |
151 | ||
152 | static struct model_data model_conf[END_MODEL] = { | |
153 | /* | |
154 | * Those pathnames are relative to the HOTK / ATKD device : | |
155 | * - mt_mled | |
156 | * - mt_wled | |
157 | * - brightness_set | |
158 | * - brightness_get | |
159 | * - display_set | |
160 | * - display_get | |
161 | * | |
162 | * TODO I have seen a SWBX and AIBX method on some models, like L1400B, | |
163 | * it seems to be a kind of switch, but what for ? | |
164 | * | |
165 | */ | |
166 | ||
167 | { | |
168 | .name = "A1x", | |
169 | .mt_mled = "MLED", | |
170 | .mled_status = "\\MAIL", | |
171 | .mt_lcd_switch = A1x_PREFIX "_Q10", | |
172 | .lcd_status = "\\BKLI", | |
173 | .brightness_up = A1x_PREFIX "_Q0E", | |
174 | .brightness_down = A1x_PREFIX "_Q0F" | |
175 | }, | |
176 | ||
177 | { | |
178 | .name = "A2x", | |
179 | .mt_mled = "MLED", | |
180 | .mt_wled = "WLED", | |
181 | .wled_status = "\\SG66", | |
182 | .mt_lcd_switch = "\\Q10", | |
183 | .lcd_status = "\\BAOF", | |
184 | .brightness_set = "SPLV", | |
185 | .brightness_get = "GPLV", | |
186 | .display_set = "SDSP", | |
187 | .display_get = "\\INFB" | |
188 | }, | |
189 | ||
190 | { | |
191 | .name = "D1x", | |
192 | .mt_mled = "MLED", | |
193 | .mt_lcd_switch = "\\Q0D", | |
194 | .lcd_status = "\\GP11", | |
195 | .brightness_up = "\\Q0C", | |
196 | .brightness_down = "\\Q0B", | |
197 | .brightness_status = "\\BLVL", | |
198 | .display_set = "SDSP", | |
199 | .display_get = "\\INFB" | |
200 | }, | |
201 | ||
202 | { | |
203 | .name = "L2D", | |
204 | .mt_mled = "MLED", | |
205 | .mled_status = "\\SGP6", | |
206 | .mt_wled = "WLED", | |
207 | .wled_status = "\\RCP3", | |
208 | .mt_lcd_switch = "\\Q10", | |
209 | .lcd_status = "\\SGP0", | |
210 | .brightness_up = "\\Q0E", | |
211 | .brightness_down = "\\Q0F", | |
212 | .display_set = "SDSP", | |
213 | .display_get = "\\INFB" | |
214 | }, | |
215 | ||
216 | { | |
217 | .name = "L3C", | |
218 | .mt_mled = "MLED", | |
219 | .mt_wled = "WLED", | |
220 | .mt_lcd_switch = L3C_PREFIX "_Q10", | |
221 | .lcd_status = "\\GL32", | |
222 | .brightness_set = "SPLV", | |
223 | .brightness_get = "GPLV", | |
224 | .display_set = "SDSP", | |
225 | .display_get = "\\_SB.PCI0.PCI1.VGAC.NMAP" | |
226 | }, | |
227 | ||
228 | { | |
229 | .name = "L3D", | |
230 | .mt_mled = "MLED", | |
231 | .mled_status = "\\MALD", | |
232 | .mt_wled = "WLED", | |
233 | .mt_lcd_switch = "\\Q10", | |
234 | .lcd_status = "\\BKLG", | |
235 | .brightness_set = "SPLV", | |
236 | .brightness_get = "GPLV", | |
237 | .display_set = "SDSP", | |
238 | .display_get = "\\INFB" | |
239 | }, | |
240 | ||
241 | { | |
242 | .name = "L3H", | |
243 | .mt_mled = "MLED", | |
244 | .mt_wled = "WLED", | |
245 | .mt_lcd_switch = "EHK", | |
246 | .lcd_status = "\\_SB.PCI0.PM.PBC", | |
247 | .brightness_set = "SPLV", | |
248 | .brightness_get = "GPLV", | |
249 | .display_set = "SDSP", | |
250 | .display_get = "\\INFB" | |
251 | }, | |
252 | ||
253 | { | |
254 | .name = "L4R", | |
255 | .mt_mled = "MLED", | |
256 | .mt_wled = "WLED", | |
257 | .wled_status = "\\_SB.PCI0.SBRG.SG13", | |
258 | .mt_lcd_switch = xxN_PREFIX "_Q10", | |
259 | .lcd_status = "\\_SB.PCI0.SBSM.SEO4", | |
260 | .brightness_set = "SPLV", | |
261 | .brightness_get = "GPLV", | |
262 | .display_set = "SDSP", | |
263 | .display_get = "\\_SB.PCI0.P0P1.VGA.GETD" | |
264 | }, | |
265 | ||
266 | { | |
267 | .name = "L5x", | |
268 | .mt_mled = "MLED", | |
269 | /* WLED present, but not controlled by ACPI */ | |
270 | .mt_tled = "TLED", | |
271 | .mt_lcd_switch = "\\Q0D", | |
272 | .lcd_status = "\\BAOF", | |
273 | .brightness_set = "SPLV", | |
274 | .brightness_get = "GPLV", | |
275 | .display_set = "SDSP", | |
276 | .display_get = "\\INFB" | |
277 | }, | |
278 | ||
279 | { | |
280 | .name = "L8L" | |
281 | /* No features, but at least support the hotkeys */ | |
282 | }, | |
283 | ||
284 | { | |
285 | .name = "M1A", | |
286 | .mt_mled = "MLED", | |
287 | .mt_lcd_switch = M1A_PREFIX "Q10", | |
288 | .lcd_status = "\\PNOF", | |
289 | .brightness_up = M1A_PREFIX "Q0E", | |
290 | .brightness_down = M1A_PREFIX "Q0F", | |
291 | .brightness_status = "\\BRIT", | |
292 | .display_set = "SDSP", | |
293 | .display_get = "\\INFB" | |
294 | }, | |
295 | ||
296 | { | |
297 | .name = "M2E", | |
298 | .mt_mled = "MLED", | |
299 | .mt_wled = "WLED", | |
300 | .mt_lcd_switch = "\\Q10", | |
301 | .lcd_status = "\\GP06", | |
302 | .brightness_set = "SPLV", | |
303 | .brightness_get = "GPLV", | |
304 | .display_set = "SDSP", | |
305 | .display_get = "\\INFB" | |
306 | }, | |
307 | ||
308 | { | |
309 | .name = "M6N", | |
310 | .mt_mled = "MLED", | |
311 | .mt_wled = "WLED", | |
312 | .wled_status = "\\_SB.PCI0.SBRG.SG13", | |
313 | .mt_lcd_switch = xxN_PREFIX "_Q10", | |
314 | .lcd_status = "\\_SB.BKLT", | |
315 | .brightness_set = "SPLV", | |
316 | .brightness_get = "GPLV", | |
317 | .display_set = "SDSP", | |
318 | .display_get = "\\SSTE" | |
319 | }, | |
320 | { | |
321 | .name = "M6R", | |
322 | .mt_mled = "MLED", | |
323 | .mt_wled = "WLED", | |
324 | .mt_lcd_switch = xxN_PREFIX "_Q10", | |
325 | .lcd_status = "\\_SB.PCI0.SBSM.SEO4", | |
326 | .brightness_set = "SPLV", | |
327 | .brightness_get = "GPLV", | |
328 | .display_set = "SDSP", | |
329 | .display_get = "\\SSTE" | |
330 | }, | |
331 | ||
332 | ||
333 | { | |
334 | .name = "P30", | |
335 | .mt_wled = "WLED", | |
336 | .mt_lcd_switch = P30_PREFIX "_Q0E", | |
337 | .lcd_status = "\\BKLT", | |
338 | .brightness_up = P30_PREFIX "_Q68", | |
339 | .brightness_down = P30_PREFIX "_Q69", | |
340 | .brightness_get = "GPLV", | |
341 | .display_set = "SDSP", | |
342 | .display_get = "\\DNXT" | |
343 | }, | |
344 | ||
345 | { | |
346 | .name = "S1x", | |
347 | .mt_mled = "MLED", | |
348 | .mled_status = "\\EMLE", | |
349 | .mt_wled = "WLED", | |
350 | .mt_lcd_switch = S1x_PREFIX "Q10" , | |
351 | .lcd_status = "\\PNOF", | |
352 | .brightness_set = "SPLV", | |
353 | .brightness_get = "GPLV" | |
354 | }, | |
355 | ||
356 | { | |
357 | .name = "S2x", | |
358 | .mt_mled = "MLED", | |
359 | .mled_status = "\\MAIL", | |
360 | .mt_lcd_switch = S2x_PREFIX "_Q10", | |
361 | .lcd_status = "\\BKLI", | |
362 | .brightness_up = S2x_PREFIX "_Q0B", | |
363 | .brightness_down = S2x_PREFIX "_Q0A" | |
364 | }, | |
365 | ||
366 | { | |
367 | .name = "xxN", | |
368 | .mt_mled = "MLED", | |
369 | /* WLED present, but not controlled by ACPI */ | |
370 | .mt_lcd_switch = xxN_PREFIX "_Q10", | |
371 | .lcd_status = "\\BKLT", | |
372 | .brightness_set = "SPLV", | |
373 | .brightness_get = "GPLV", | |
374 | .display_set = "SDSP", | |
375 | .display_get = "\\ADVG" | |
376 | } | |
377 | }; | |
378 | ||
379 | /* procdir we use */ | |
380 | static struct proc_dir_entry *asus_proc_dir; | |
381 | ||
382 | /* | |
383 | * This header is made available to allow proper configuration given model, | |
384 | * revision number , ... this info cannot go in struct asus_hotk because it is | |
385 | * available before the hotk | |
386 | */ | |
387 | static struct acpi_table_header *asus_info; | |
388 | ||
389 | /* The actual device the driver binds to */ | |
390 | static struct asus_hotk *hotk; | |
391 | ||
392 | /* | |
393 | * The hotkey driver declaration | |
394 | */ | |
395 | static int asus_hotk_add(struct acpi_device *device); | |
396 | static int asus_hotk_remove(struct acpi_device *device, int type); | |
397 | static struct acpi_driver asus_hotk_driver = { | |
398 | .name = ACPI_HOTK_NAME, | |
399 | .class = ACPI_HOTK_CLASS, | |
400 | .ids = ACPI_HOTK_HID, | |
401 | .ops = { | |
402 | .add = asus_hotk_add, | |
403 | .remove = asus_hotk_remove, | |
404 | }, | |
405 | }; | |
406 | ||
407 | /* | |
408 | * This function evaluates an ACPI method, given an int as parameter, the | |
409 | * method is searched within the scope of the handle, can be NULL. The output | |
410 | * of the method is written is output, which can also be NULL | |
411 | * | |
412 | * returns 1 if write is successful, 0 else. | |
413 | */ | |
414 | static int write_acpi_int(acpi_handle handle, const char *method, int val, | |
415 | struct acpi_buffer *output) | |
416 | { | |
417 | struct acpi_object_list params; //list of input parameters (an int here) | |
418 | union acpi_object in_obj; //the only param we use | |
419 | acpi_status status; | |
420 | ||
421 | params.count = 1; | |
422 | params.pointer = &in_obj; | |
423 | in_obj.type = ACPI_TYPE_INTEGER; | |
424 | in_obj.integer.value = val; | |
425 | ||
426 | status = acpi_evaluate_object(handle, (char *) method, ¶ms, output); | |
427 | return (status == AE_OK); | |
428 | } | |
429 | ||
430 | ||
431 | static int read_acpi_int(acpi_handle handle, const char *method, int *val) | |
432 | { | |
433 | struct acpi_buffer output; | |
434 | union acpi_object out_obj; | |
435 | acpi_status status; | |
436 | ||
437 | output.length = sizeof(out_obj); | |
438 | output.pointer = &out_obj; | |
439 | ||
440 | status = acpi_evaluate_object(handle, (char *) method, NULL, &output); | |
441 | *val = out_obj.integer.value; | |
442 | return (status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER); | |
443 | } | |
444 | ||
445 | /* | |
446 | * We write our info in page, we begin at offset off and cannot write more | |
447 | * than count bytes. We set eof to 1 if we handle those 2 values. We return the | |
448 | * number of bytes written in page | |
449 | */ | |
450 | static int | |
451 | proc_read_info(char *page, char **start, off_t off, int count, int *eof, | |
452 | void *data) | |
453 | { | |
454 | int len = 0; | |
455 | int temp; | |
456 | char buf[16]; //enough for all info | |
457 | /* | |
458 | * We use the easy way, we don't care of off and count, so we don't set eof | |
459 | * to 1 | |
460 | */ | |
461 | ||
462 | len += sprintf(page, ACPI_HOTK_NAME " " ASUS_ACPI_VERSION "\n"); | |
463 | len += sprintf(page + len, "Model reference : %s\n", | |
464 | hotk->methods->name); | |
465 | /* | |
466 | * The SFUN method probably allows the original driver to get the list | |
467 | * of features supported by a given model. For now, 0x0100 or 0x0800 | |
468 | * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. | |
469 | * The significance of others is yet to be found. | |
470 | */ | |
471 | if (read_acpi_int(hotk->handle, "SFUN", &temp)) | |
472 | len += sprintf(page + len, "SFUN value : 0x%04x\n", temp); | |
473 | /* | |
474 | * Another value for userspace: the ASYM method returns 0x02 for | |
475 | * battery low and 0x04 for battery critical, its readings tend to be | |
476 | * more accurate than those provided by _BST. | |
477 | * Note: since not all the laptops provide this method, errors are | |
478 | * silently ignored. | |
479 | */ | |
480 | if (read_acpi_int(hotk->handle, "ASYM", &temp)) | |
481 | len += sprintf(page + len, "ASYM value : 0x%04x\n", temp); | |
482 | if (asus_info) { | |
483 | snprintf(buf, 16, "%d", asus_info->length); | |
484 | len += sprintf(page + len, "DSDT length : %s\n", buf); | |
485 | snprintf(buf, 16, "%d", asus_info->checksum); | |
486 | len += sprintf(page + len, "DSDT checksum : %s\n", buf); | |
487 | snprintf(buf, 16, "%d", asus_info->revision); | |
488 | len += sprintf(page + len, "DSDT revision : %s\n", buf); | |
489 | snprintf(buf, 7, "%s", asus_info->oem_id); | |
490 | len += sprintf(page + len, "OEM id : %s\n", buf); | |
491 | snprintf(buf, 9, "%s", asus_info->oem_table_id); | |
492 | len += sprintf(page + len, "OEM table id : %s\n", buf); | |
493 | snprintf(buf, 16, "%x", asus_info->oem_revision); | |
494 | len += sprintf(page + len, "OEM revision : 0x%s\n", buf); | |
495 | snprintf(buf, 5, "%s", asus_info->asl_compiler_id); | |
496 | len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); | |
497 | snprintf(buf, 16, "%x", asus_info->asl_compiler_revision); | |
498 | len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); | |
499 | } | |
500 | ||
501 | return len; | |
502 | } | |
503 | ||
504 | ||
505 | /* | |
506 | * /proc handlers | |
507 | * We write our info in page, we begin at offset off and cannot write more | |
508 | * than count bytes. We set eof to 1 if we handle those 2 values. We return the | |
509 | * number of bytes written in page | |
510 | */ | |
511 | ||
512 | /* Generic LED functions */ | |
513 | static int | |
514 | read_led(const char *ledname, int ledmask) | |
515 | { | |
516 | if (ledname) { | |
517 | int led_status; | |
518 | ||
519 | if (read_acpi_int(NULL, ledname, &led_status)) | |
520 | return led_status; | |
521 | else | |
522 | printk(KERN_WARNING "Asus ACPI: Error reading LED " | |
523 | "status\n"); | |
524 | } | |
525 | return (hotk->status & ledmask) ? 1 : 0; | |
526 | } | |
527 | ||
528 | static int parse_arg(const char __user *buf, unsigned long count, int *val) | |
529 | { | |
530 | char s[32]; | |
531 | if (!count) | |
532 | return 0; | |
533 | if (count > 31) | |
534 | return -EINVAL; | |
535 | if (copy_from_user(s, buf, count)) | |
536 | return -EFAULT; | |
537 | s[count] = 0; | |
538 | if (sscanf(s, "%i", val) != 1) | |
539 | return -EINVAL; | |
540 | return count; | |
541 | } | |
542 | ||
543 | /* FIXME: kill extraneous args so it can be called independently */ | |
544 | static int | |
545 | write_led(const char __user *buffer, unsigned long count, | |
546 | char *ledname, int ledmask, int invert) | |
547 | { | |
548 | int value; | |
549 | int led_out = 0; | |
550 | ||
551 | count = parse_arg(buffer, count, &value); | |
552 | if (count > 0) | |
553 | led_out = value ? 1 : 0; | |
554 | ||
555 | hotk->status = | |
556 | (led_out) ? (hotk->status | ledmask) : (hotk->status & ~ledmask); | |
557 | ||
558 | if (invert) /* invert target value */ | |
559 | led_out = !led_out & 0x1; | |
560 | ||
561 | if (!write_acpi_int(hotk->handle, ledname, led_out, NULL)) | |
562 | printk(KERN_WARNING "Asus ACPI: LED (%s) write failed\n", ledname); | |
563 | ||
564 | return count; | |
565 | } | |
566 | ||
567 | ||
568 | /* | |
569 | * Proc handlers for MLED | |
570 | */ | |
571 | static int | |
572 | proc_read_mled(char *page, char **start, off_t off, int count, int *eof, | |
573 | void *data) | |
574 | { | |
575 | return sprintf(page, "%d\n", read_led(hotk->methods->mled_status, MLED_ON)); | |
576 | } | |
577 | ||
578 | ||
579 | static int | |
580 | proc_write_mled(struct file *file, const char __user *buffer, | |
581 | unsigned long count, void *data) | |
582 | { | |
583 | return write_led(buffer, count, hotk->methods->mt_mled, MLED_ON, 1); | |
584 | } | |
585 | ||
586 | /* | |
587 | * Proc handlers for WLED | |
588 | */ | |
589 | static int | |
590 | proc_read_wled(char *page, char **start, off_t off, int count, int *eof, | |
591 | void *data) | |
592 | { | |
593 | return sprintf(page, "%d\n", read_led(hotk->methods->wled_status, WLED_ON)); | |
594 | } | |
595 | ||
596 | static int | |
597 | proc_write_wled(struct file *file, const char __user *buffer, | |
598 | unsigned long count, void *data) | |
599 | { | |
600 | return write_led(buffer, count, hotk->methods->mt_wled, WLED_ON, 0); | |
601 | } | |
602 | ||
603 | /* | |
604 | * Proc handlers for TLED | |
605 | */ | |
606 | static int | |
607 | proc_read_tled(char *page, char **start, off_t off, int count, int *eof, | |
608 | void *data) | |
609 | { | |
610 | return sprintf(page, "%d\n", read_led(hotk->methods->tled_status, TLED_ON)); | |
611 | } | |
612 | ||
613 | static int | |
614 | proc_write_tled(struct file *file, const char __user *buffer, | |
615 | unsigned long count, void *data) | |
616 | { | |
617 | return write_led(buffer, count, hotk->methods->mt_tled, TLED_ON, 0); | |
618 | } | |
619 | ||
620 | ||
621 | static int get_lcd_state(void) | |
622 | { | |
623 | int lcd = 0; | |
624 | ||
625 | if (hotk->model != L3H) { | |
626 | /* We don't have to check anything if we are here */ | |
627 | if (!read_acpi_int(NULL, hotk->methods->lcd_status, &lcd)) | |
628 | printk(KERN_WARNING "Asus ACPI: Error reading LCD status\n"); | |
629 | ||
630 | if (hotk->model == L2D) | |
631 | lcd = ~lcd; | |
632 | } else { /* L3H and the like have to be handled differently */ | |
633 | acpi_status status = 0; | |
634 | struct acpi_object_list input; | |
635 | union acpi_object mt_params[2]; | |
636 | struct acpi_buffer output; | |
637 | union acpi_object out_obj; | |
638 | ||
639 | input.count = 2; | |
640 | input.pointer = mt_params; | |
641 | /* Note: the following values are partly guessed up, but | |
642 | otherwise they seem to work */ | |
643 | mt_params[0].type = ACPI_TYPE_INTEGER; | |
644 | mt_params[0].integer.value = 0x02; | |
645 | mt_params[1].type = ACPI_TYPE_INTEGER; | |
646 | mt_params[1].integer.value = 0x02; | |
647 | ||
648 | output.length = sizeof(out_obj); | |
649 | output.pointer = &out_obj; | |
650 | ||
651 | status = acpi_evaluate_object(NULL, hotk->methods->lcd_status, &input, &output); | |
652 | if (status != AE_OK) | |
653 | return -1; | |
654 | if (out_obj.type == ACPI_TYPE_INTEGER) | |
655 | /* That's what the AML code does */ | |
656 | lcd = out_obj.integer.value >> 8; | |
657 | } | |
658 | ||
659 | return (lcd & 1); | |
660 | } | |
661 | ||
662 | static int set_lcd_state(int value) | |
663 | { | |
664 | int lcd = 0; | |
665 | acpi_status status = 0; | |
666 | ||
667 | lcd = value ? 1 : 0; | |
668 | if (lcd != get_lcd_state()) { | |
669 | /* switch */ | |
670 | if (hotk->model != L3H) { | |
671 | status = | |
672 | acpi_evaluate_object(NULL, hotk->methods->mt_lcd_switch, | |
673 | NULL, NULL); | |
674 | } else { /* L3H and the like have to be handled differently */ | |
675 | if (!write_acpi_int(hotk->handle, hotk->methods->mt_lcd_switch, 0x07, NULL)) | |
676 | status = AE_ERROR; | |
677 | /* L3H's AML executes EHK (0x07) upon Fn+F7 keypress, | |
678 | the exact behaviour is simulated here */ | |
679 | } | |
680 | if (ACPI_FAILURE(status)) | |
681 | printk(KERN_WARNING "Asus ACPI: Error switching LCD\n"); | |
682 | } | |
683 | return 0; | |
684 | ||
685 | } | |
686 | ||
687 | static int | |
688 | proc_read_lcd(char *page, char **start, off_t off, int count, int *eof, | |
689 | void *data) | |
690 | { | |
691 | return sprintf(page, "%d\n", get_lcd_state()); | |
692 | } | |
693 | ||
694 | ||
695 | static int | |
696 | proc_write_lcd(struct file *file, const char __user *buffer, | |
697 | unsigned long count, void *data) | |
698 | { | |
699 | int value; | |
700 | ||
701 | count = parse_arg(buffer, count, &value); | |
702 | if (count > 0) | |
703 | set_lcd_state(value); | |
704 | return count; | |
705 | } | |
706 | ||
707 | ||
708 | static int read_brightness(void) | |
709 | { | |
710 | int value; | |
711 | ||
712 | if(hotk->methods->brightness_get) { /* SPLV/GPLV laptop */ | |
713 | if (!read_acpi_int(hotk->handle, hotk->methods->brightness_get, | |
714 | &value)) | |
715 | printk(KERN_WARNING "Asus ACPI: Error reading brightness\n"); | |
716 | } else if (hotk->methods->brightness_status) { /* For D1 for example */ | |
717 | if (!read_acpi_int(NULL, hotk->methods->brightness_status, | |
718 | &value)) | |
719 | printk(KERN_WARNING "Asus ACPI: Error reading brightness\n"); | |
720 | } else /* No GPLV method */ | |
721 | value = hotk->brightness; | |
722 | return value; | |
723 | } | |
724 | ||
725 | /* | |
726 | * Change the brightness level | |
727 | */ | |
728 | static void set_brightness(int value) | |
729 | { | |
730 | acpi_status status = 0; | |
731 | ||
732 | /* SPLV laptop */ | |
733 | if(hotk->methods->brightness_set) { | |
734 | if (!write_acpi_int(hotk->handle, hotk->methods->brightness_set, | |
735 | value, NULL)) | |
736 | printk(KERN_WARNING "Asus ACPI: Error changing brightness\n"); | |
737 | return; | |
738 | } | |
739 | ||
740 | /* No SPLV method if we are here, act as appropriate */ | |
741 | value -= read_brightness(); | |
742 | while (value != 0) { | |
743 | status = acpi_evaluate_object(NULL, (value > 0) ? | |
744 | hotk->methods->brightness_up : | |
745 | hotk->methods->brightness_down, | |
746 | NULL, NULL); | |
747 | (value > 0) ? value-- : value++; | |
748 | if (ACPI_FAILURE(status)) | |
749 | printk(KERN_WARNING "Asus ACPI: Error changing brightness\n"); | |
750 | } | |
751 | return; | |
752 | } | |
753 | ||
754 | static int | |
755 | proc_read_brn(char *page, char **start, off_t off, int count, int *eof, | |
756 | void *data) | |
757 | { | |
758 | return sprintf(page, "%d\n", read_brightness()); | |
759 | } | |
760 | ||
761 | static int | |
762 | proc_write_brn(struct file *file, const char __user *buffer, | |
763 | unsigned long count, void *data) | |
764 | { | |
765 | int value; | |
766 | ||
767 | count = parse_arg(buffer, count, &value); | |
768 | if (count > 0) { | |
769 | value = (0 < value) ? ((15 < value) ? 15 : value) : 0; | |
770 | /* 0 <= value <= 15 */ | |
771 | set_brightness(value); | |
772 | } else if (count < 0) { | |
773 | printk(KERN_WARNING "Asus ACPI: Error reading user input\n"); | |
774 | } | |
775 | ||
776 | return count; | |
777 | } | |
778 | ||
779 | static void set_display(int value) | |
780 | { | |
781 | /* no sanity check needed for now */ | |
782 | if (!write_acpi_int(hotk->handle, hotk->methods->display_set, | |
783 | value, NULL)) | |
784 | printk(KERN_WARNING "Asus ACPI: Error setting display\n"); | |
785 | return; | |
786 | } | |
787 | ||
788 | /* | |
789 | * Now, *this* one could be more user-friendly, but so far, no-one has | |
790 | * complained. The significance of bits is the same as in proc_write_disp() | |
791 | */ | |
792 | static int | |
793 | proc_read_disp(char *page, char **start, off_t off, int count, int *eof, | |
794 | void *data) | |
795 | { | |
796 | int value = 0; | |
797 | ||
798 | if (!read_acpi_int(hotk->handle, hotk->methods->display_get, &value)) | |
799 | printk(KERN_WARNING "Asus ACPI: Error reading display status\n"); | |
800 | value &= 0x07; /* needed for some models, shouldn't hurt others */ | |
801 | return sprintf(page, "%d\n", value); | |
802 | } | |
803 | ||
804 | /* | |
805 | * Experimental support for display switching. As of now: 1 should activate | |
806 | * the LCD output, 2 should do for CRT, and 4 for TV-Out. Any combination | |
807 | * (bitwise) of these will suffice. I never actually tested 3 displays hooked up | |
808 | * simultaneously, so be warned. See the acpi4asus README for more info. | |
809 | */ | |
810 | static int | |
811 | proc_write_disp(struct file *file, const char __user *buffer, | |
812 | unsigned long count, void *data) | |
813 | { | |
814 | int value; | |
815 | ||
816 | count = parse_arg(buffer, count, &value); | |
817 | if (count > 0) | |
818 | set_display(value); | |
819 | else if (count < 0) | |
820 | printk(KERN_WARNING "Asus ACPI: Error reading user input\n"); | |
821 | ||
822 | return count; | |
823 | } | |
824 | ||
825 | ||
826 | typedef int (proc_readfunc)(char *page, char **start, off_t off, int count, | |
827 | int *eof, void *data); | |
828 | typedef int (proc_writefunc)(struct file *file, const char __user *buffer, | |
829 | unsigned long count, void *data); | |
830 | ||
831 | static int | |
832 | __init asus_proc_add(char *name, proc_writefunc *writefunc, | |
833 | proc_readfunc *readfunc, mode_t mode, | |
834 | struct acpi_device *device) | |
835 | { | |
836 | struct proc_dir_entry *proc = create_proc_entry(name, mode, acpi_device_dir(device)); | |
837 | if(!proc) { | |
838 | printk(KERN_WARNING " Unable to create %s fs entry\n", name); | |
839 | return -1; | |
840 | } | |
841 | proc->write_proc = writefunc; | |
842 | proc->read_proc = readfunc; | |
843 | proc->data = acpi_driver_data(device); | |
844 | proc->owner = THIS_MODULE; | |
845 | proc->uid = asus_uid; | |
846 | proc->gid = asus_gid; | |
847 | return 0; | |
848 | } | |
849 | ||
850 | static int __init asus_hotk_add_fs(struct acpi_device *device) | |
851 | { | |
852 | struct proc_dir_entry *proc; | |
853 | mode_t mode; | |
854 | ||
855 | /* | |
856 | * If parameter uid or gid is not changed, keep the default setting for | |
857 | * our proc entries (-rw-rw-rw-) else, it means we care about security, | |
858 | * and then set to -rw-rw---- | |
859 | */ | |
860 | ||
861 | if ((asus_uid == 0) && (asus_gid == 0)){ | |
862 | mode = S_IFREG | S_IRUGO | S_IWUGO; | |
863 | } else { | |
864 | mode = S_IFREG | S_IRUSR | S_IRGRP | S_IWUSR | S_IWGRP; | |
865 | } | |
866 | ||
867 | acpi_device_dir(device) = asus_proc_dir; | |
868 | if (!acpi_device_dir(device)) | |
869 | return -ENODEV; | |
870 | ||
871 | proc = create_proc_entry(PROC_INFO, mode, acpi_device_dir(device)); | |
872 | if (proc) { | |
873 | proc->read_proc = proc_read_info; | |
874 | proc->data = acpi_driver_data(device); | |
875 | proc->owner = THIS_MODULE; | |
876 | proc->uid = asus_uid; | |
877 | proc->gid = asus_gid; | |
878 | } else { | |
879 | printk(KERN_WARNING " Unable to create " PROC_INFO | |
880 | " fs entry\n"); | |
881 | } | |
882 | ||
883 | if (hotk->methods->mt_wled) { | |
884 | asus_proc_add(PROC_WLED, &proc_write_wled, &proc_read_wled, mode, device); | |
885 | } | |
886 | ||
887 | if (hotk->methods->mt_mled) { | |
888 | asus_proc_add(PROC_MLED, &proc_write_mled, &proc_read_mled, mode, device); | |
889 | } | |
890 | ||
891 | if (hotk->methods->mt_tled) { | |
892 | asus_proc_add(PROC_TLED, &proc_write_tled, &proc_read_tled, mode, device); | |
893 | } | |
894 | ||
895 | /* | |
896 | * We need both read node and write method as LCD switch is also accessible | |
897 | * from keyboard | |
898 | */ | |
899 | if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status) { | |
900 | asus_proc_add(PROC_LCD, &proc_write_lcd, &proc_read_lcd, mode, device); | |
901 | } | |
902 | ||
903 | if ((hotk->methods->brightness_up && hotk->methods->brightness_down) || | |
904 | (hotk->methods->brightness_get && hotk->methods->brightness_set)) { | |
905 | asus_proc_add(PROC_BRN, &proc_write_brn, &proc_read_brn, mode, device); | |
906 | } | |
907 | ||
908 | if (hotk->methods->display_set) { | |
909 | asus_proc_add(PROC_DISP, &proc_write_disp, &proc_read_disp, mode, device); | |
910 | } | |
911 | ||
912 | return 0; | |
913 | } | |
914 | ||
915 | static int asus_hotk_remove_fs(struct acpi_device* device) | |
916 | { | |
917 | if(acpi_device_dir(device)) { | |
918 | remove_proc_entry(PROC_INFO,acpi_device_dir(device)); | |
919 | if (hotk->methods->mt_wled) | |
920 | remove_proc_entry(PROC_WLED,acpi_device_dir(device)); | |
921 | if (hotk->methods->mt_mled) | |
922 | remove_proc_entry(PROC_MLED,acpi_device_dir(device)); | |
923 | if (hotk->methods->mt_tled) | |
924 | remove_proc_entry(PROC_TLED,acpi_device_dir(device)); | |
925 | if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status) | |
926 | remove_proc_entry(PROC_LCD, acpi_device_dir(device)); | |
927 | if ((hotk->methods->brightness_up && hotk->methods->brightness_down) || | |
928 | (hotk->methods->brightness_get && hotk->methods->brightness_set)) | |
929 | remove_proc_entry(PROC_BRN, acpi_device_dir(device)); | |
930 | if (hotk->methods->display_set) | |
931 | remove_proc_entry(PROC_DISP, acpi_device_dir(device)); | |
932 | } | |
933 | return 0; | |
934 | } | |
935 | ||
936 | ||
937 | static void asus_hotk_notify(acpi_handle handle, u32 event, void *data) | |
938 | { | |
939 | /* TODO Find a better way to handle events count.*/ | |
940 | if (!hotk) | |
941 | return; | |
942 | ||
943 | if ((event & ~((u32) BR_UP)) < 16) { | |
944 | hotk->brightness = (event & ~((u32) BR_UP)); | |
945 | } else if ((event & ~((u32) BR_DOWN)) < 16 ) { | |
946 | hotk->brightness = (event & ~((u32) BR_DOWN)); | |
947 | } | |
948 | ||
949 | acpi_bus_generate_event(hotk->device, event, | |
950 | hotk->event_count[event % 128]++); | |
951 | ||
952 | return; | |
953 | } | |
954 | ||
955 | /* | |
956 | * This function is used to initialize the hotk with right values. In this | |
957 | * method, we can make all the detection we want, and modify the hotk struct | |
958 | */ | |
959 | static int __init asus_hotk_get_info(void) | |
960 | { | |
961 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
962 | struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL }; | |
963 | union acpi_object *model = NULL; | |
964 | int bsts_result; | |
965 | acpi_status status; | |
966 | ||
967 | /* | |
968 | * Get DSDT headers early enough to allow for differentiating between | |
969 | * models, but late enough to allow acpi_bus_register_driver() to fail | |
970 | * before doing anything ACPI-specific. Should we encounter a machine, | |
971 | * which needs special handling (i.e. its hotkey device has a different | |
972 | * HID), this bit will be moved. A global variable asus_info contains | |
973 | * the DSDT header. | |
974 | */ | |
975 | status = acpi_get_table(ACPI_TABLE_DSDT, 1, &dsdt); | |
976 | if (ACPI_FAILURE(status)) | |
977 | printk(KERN_WARNING " Couldn't get the DSDT table header\n"); | |
978 | else | |
979 | asus_info = (struct acpi_table_header *) dsdt.pointer; | |
980 | ||
981 | /* We have to write 0 on init this far for all ASUS models */ | |
982 | if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) { | |
983 | printk(KERN_ERR " Hotkey initialization failed\n"); | |
984 | return -ENODEV; | |
985 | } | |
986 | ||
987 | /* This needs to be called for some laptops to init properly */ | |
988 | if (!read_acpi_int(hotk->handle, "BSTS", &bsts_result)) | |
989 | printk(KERN_WARNING " Error calling BSTS\n"); | |
990 | else if (bsts_result) | |
991 | printk(KERN_NOTICE " BSTS called, 0x%02x returned\n", bsts_result); | |
992 | ||
993 | /* Samsung P30 has a device with a valid _HID whose INIT does not | |
994 | * return anything. Catch this one and any similar here */ | |
995 | if (buffer.pointer == NULL) { | |
996 | if (asus_info && /* Samsung P30 */ | |
997 | strncmp(asus_info->oem_table_id, "ODEM", 4) == 0) { | |
998 | hotk->model = P30; | |
999 | printk(KERN_NOTICE " Samsung P30 detected, supported\n"); | |
1000 | } else { | |
1001 | hotk->model = M2E; | |
1002 | printk(KERN_WARNING " no string returned by INIT\n"); | |
1003 | printk(KERN_WARNING " trying default values, supply " | |
1004 | "the developers with your DSDT\n"); | |
1005 | } | |
1006 | hotk->methods = &model_conf[hotk->model]; | |
1007 | return AE_OK; | |
1008 | } | |
1009 | ||
1010 | model = (union acpi_object *) buffer.pointer; | |
1011 | if (model->type == ACPI_TYPE_STRING) { | |
1012 | printk(KERN_NOTICE " %s model detected, ", model->string.pointer); | |
1013 | } | |
1014 | ||
1015 | hotk->model = END_MODEL; | |
1016 | if (strncmp(model->string.pointer, "L3D", 3) == 0) | |
1017 | hotk->model = L3D; | |
1018 | else if (strncmp(model->string.pointer, "L3H", 3) == 0 || | |
1019 | strncmp(model->string.pointer, "L2E", 3) == 0) | |
1020 | hotk->model = L3H; | |
1021 | else if (strncmp(model->string.pointer, "L3", 2) == 0 || | |
1022 | strncmp(model->string.pointer, "L2B", 3) == 0) | |
1023 | hotk->model = L3C; | |
1024 | else if (strncmp(model->string.pointer, "L8L", 3) == 0) | |
1025 | hotk->model = L8L; | |
1026 | else if (strncmp(model->string.pointer, "L4R", 3) == 0) | |
1027 | hotk->model = L4R; | |
1028 | else if (strncmp(model->string.pointer, "M6N", 3) == 0) | |
1029 | hotk->model = M6N; | |
1030 | else if (strncmp(model->string.pointer, "M6R", 3) == 0) | |
1031 | hotk->model = M6R; | |
1032 | else if (strncmp(model->string.pointer, "M2N", 3) == 0 || | |
1033 | strncmp(model->string.pointer, "M3N", 3) == 0 || | |
1034 | strncmp(model->string.pointer, "M5N", 3) == 0 || | |
1035 | strncmp(model->string.pointer, "M6N", 3) == 0 || | |
1036 | strncmp(model->string.pointer, "S1N", 3) == 0 || | |
1037 | strncmp(model->string.pointer, "S5N", 3) == 0 || | |
1038 | strncmp(model->string.pointer, "W1N", 3) == 0) | |
1039 | hotk->model = xxN; | |
1040 | else if (strncmp(model->string.pointer, "M1", 2) == 0) | |
1041 | hotk->model = M1A; | |
1042 | else if (strncmp(model->string.pointer, "M2", 2) == 0 || | |
1043 | strncmp(model->string.pointer, "L4E", 3) == 0) | |
1044 | hotk->model = M2E; | |
1045 | else if (strncmp(model->string.pointer, "L2", 2) == 0) | |
1046 | hotk->model = L2D; | |
1047 | else if (strncmp(model->string.pointer, "L8", 2) == 0) | |
1048 | hotk->model = S1x; | |
1049 | else if (strncmp(model->string.pointer, "D1", 2) == 0) | |
1050 | hotk->model = D1x; | |
1051 | else if (strncmp(model->string.pointer, "A1", 2) == 0) | |
1052 | hotk->model = A1x; | |
1053 | else if (strncmp(model->string.pointer, "A2", 2) == 0) | |
1054 | hotk->model = A2x; | |
1055 | else if (strncmp(model->string.pointer, "J1", 2) == 0) | |
1056 | hotk->model = S2x; | |
1057 | else if (strncmp(model->string.pointer, "L5", 2) == 0) | |
1058 | hotk->model = L5x; | |
1059 | ||
1060 | if (hotk->model == END_MODEL) { | |
1061 | printk("unsupported, trying default values, supply the " | |
1062 | "developers with your DSDT\n"); | |
1063 | hotk->model = M2E; | |
1064 | } else { | |
1065 | printk("supported\n"); | |
1066 | } | |
1067 | ||
1068 | hotk->methods = &model_conf[hotk->model]; | |
1069 | ||
1070 | /* Sort of per-model blacklist */ | |
1071 | if (strncmp(model->string.pointer, "L2B", 3) == 0) | |
1072 | hotk->methods->lcd_status = NULL; | |
1073 | /* L2B is similar enough to L3C to use its settings, with this only | |
1074 | exception */ | |
1075 | else if (strncmp(model->string.pointer, "S5N", 3) == 0 || | |
1076 | strncmp(model->string.pointer, "M5N", 3) == 0) | |
1077 | hotk->methods->mt_mled = NULL; | |
1078 | /* S5N and M5N have no MLED */ | |
1079 | else if (strncmp(model->string.pointer, "M2N", 3) == 0 || | |
1080 | strncmp(model->string.pointer, "W1N", 3) == 0) | |
1081 | hotk->methods->mt_wled = "WLED"; | |
1082 | /* M2N and W1N have a usable WLED */ | |
1083 | else if (asus_info) { | |
1084 | if (strncmp(asus_info->oem_table_id, "L1", 2) == 0) | |
1085 | hotk->methods->mled_status = NULL; | |
1086 | /* S1300A reports L84F, but L1400B too, account for that */ | |
1087 | } | |
1088 | ||
1089 | acpi_os_free(model); | |
1090 | ||
1091 | return AE_OK; | |
1092 | } | |
1093 | ||
1094 | ||
1095 | static int __init asus_hotk_check(void) | |
1096 | { | |
1097 | int result = 0; | |
1098 | ||
1099 | result = acpi_bus_get_status(hotk->device); | |
1100 | if (result) | |
1101 | return result; | |
1102 | ||
1103 | if (hotk->device->status.present) { | |
1104 | result = asus_hotk_get_info(); | |
1105 | } else { | |
1106 | printk(KERN_ERR " Hotkey device not present, aborting\n"); | |
1107 | return -EINVAL; | |
1108 | } | |
1109 | ||
1110 | return result; | |
1111 | } | |
1112 | ||
1113 | ||
1114 | static int __init asus_hotk_add(struct acpi_device *device) | |
1115 | { | |
1116 | acpi_status status = AE_OK; | |
1117 | int result; | |
1118 | ||
1119 | if (!device) | |
1120 | return -EINVAL; | |
1121 | ||
1122 | printk(KERN_NOTICE "Asus Laptop ACPI Extras version %s\n", | |
1123 | ASUS_ACPI_VERSION); | |
1124 | ||
1125 | hotk = | |
1126 | (struct asus_hotk *) kmalloc(sizeof(struct asus_hotk), GFP_KERNEL); | |
1127 | if (!hotk) | |
1128 | return -ENOMEM; | |
1129 | memset(hotk, 0, sizeof(struct asus_hotk)); | |
1130 | ||
1131 | hotk->handle = device->handle; | |
1132 | strcpy(acpi_device_name(device), ACPI_HOTK_DEVICE_NAME); | |
1133 | strcpy(acpi_device_class(device), ACPI_HOTK_CLASS); | |
1134 | acpi_driver_data(device) = hotk; | |
1135 | hotk->device = device; | |
1136 | ||
1137 | ||
1138 | result = asus_hotk_check(); | |
1139 | if (result) | |
1140 | goto end; | |
1141 | ||
1142 | result = asus_hotk_add_fs(device); | |
1143 | if (result) | |
1144 | goto end; | |
1145 | ||
1146 | /* | |
1147 | * We install the handler, it will receive the hotk in parameter, so, we | |
1148 | * could add other data to the hotk struct | |
1149 | */ | |
1150 | status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY, | |
1151 | asus_hotk_notify, hotk); | |
1152 | if (ACPI_FAILURE(status)) | |
1153 | printk(KERN_ERR " Error installing notify handler\n"); | |
1154 | ||
1155 | /* For laptops without GPLV: init the hotk->brightness value */ | |
1156 | if ((!hotk->methods->brightness_get) && (!hotk->methods->brightness_status) && | |
1157 | (hotk->methods->brightness_up && hotk->methods->brightness_down)) { | |
1158 | status = acpi_evaluate_object(NULL, hotk->methods->brightness_down, | |
1159 | NULL, NULL); | |
1160 | if (ACPI_FAILURE(status)) | |
1161 | printk(KERN_WARNING " Error changing brightness\n"); | |
1162 | else { | |
1163 | status = acpi_evaluate_object(NULL, hotk->methods->brightness_up, | |
1164 | NULL, NULL); | |
1165 | if (ACPI_FAILURE(status)) | |
1166 | printk(KERN_WARNING " Strange, error changing" | |
1167 | " brightness\n"); | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | end: | |
1172 | if (result) { | |
1173 | kfree(hotk); | |
1174 | } | |
1175 | ||
1176 | return result; | |
1177 | } | |
1178 | ||
1179 | ||
1180 | static int asus_hotk_remove(struct acpi_device *device, int type) | |
1181 | { | |
1182 | acpi_status status = 0; | |
1183 | ||
1184 | if (!device || !acpi_driver_data(device)) | |
1185 | return -EINVAL; | |
1186 | ||
1187 | status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY, | |
1188 | asus_hotk_notify); | |
1189 | if (ACPI_FAILURE(status)) | |
1190 | printk(KERN_ERR "Asus ACPI: Error removing notify handler\n"); | |
1191 | ||
1192 | asus_hotk_remove_fs(device); | |
1193 | ||
1194 | kfree(hotk); | |
1195 | ||
1196 | return 0; | |
1197 | } | |
1198 | ||
1199 | ||
1200 | static int __init asus_acpi_init(void) | |
1201 | { | |
1202 | int result; | |
1203 | ||
1204 | if (acpi_disabled) | |
1205 | return -ENODEV; | |
1206 | ||
fb9802fa LY |
1207 | if (!acpi_specific_hotkey_enabled){ |
1208 | printk(KERN_ERR "Using generic hotkey driver\n"); | |
1209 | return -ENODEV; | |
1210 | } | |
1da177e4 LT |
1211 | asus_proc_dir = proc_mkdir(PROC_ASUS, acpi_root_dir); |
1212 | if (!asus_proc_dir) { | |
1213 | printk(KERN_ERR "Asus ACPI: Unable to create /proc entry\n"); | |
1214 | return -ENODEV; | |
1215 | } | |
1216 | asus_proc_dir->owner = THIS_MODULE; | |
1217 | ||
1218 | result = acpi_bus_register_driver(&asus_hotk_driver); | |
1219 | if (result < 1) { | |
1220 | acpi_bus_unregister_driver(&asus_hotk_driver); | |
1221 | remove_proc_entry(PROC_ASUS, acpi_root_dir); | |
1222 | return -ENODEV; | |
1223 | } | |
1224 | ||
1225 | return 0; | |
1226 | } | |
1227 | ||
1228 | ||
1229 | static void __exit asus_acpi_exit(void) | |
1230 | { | |
1231 | acpi_bus_unregister_driver(&asus_hotk_driver); | |
1232 | remove_proc_entry(PROC_ASUS, acpi_root_dir); | |
1233 | ||
1234 | acpi_os_free(asus_info); | |
1235 | ||
1236 | return; | |
1237 | } | |
1238 | ||
1239 | module_init(asus_acpi_init); | |
1240 | module_exit(asus_acpi_exit); |