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1da177e4 LT |
1 | /* |
2 | * video.c - ACPI Video Driver ($Revision:$) | |
3 | * | |
4 | * Copyright (C) 2004 Luming Yu <luming.yu@intel.com> | |
5 | * Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org> | |
6 | * | |
7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or (at | |
12 | * your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write to the Free Software Foundation, Inc., | |
21 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
22 | * | |
23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
24 | */ | |
25 | ||
26 | #include <linux/kernel.h> | |
27 | #include <linux/module.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/types.h> | |
30 | #include <linux/list.h> | |
31 | #include <linux/proc_fs.h> | |
32 | #include <linux/seq_file.h> | |
33 | ||
34 | #include <asm/uaccess.h> | |
35 | ||
36 | #include <acpi/acpi_bus.h> | |
37 | #include <acpi/acpi_drivers.h> | |
38 | ||
39 | #define ACPI_VIDEO_COMPONENT 0x08000000 | |
40 | #define ACPI_VIDEO_CLASS "video" | |
41 | #define ACPI_VIDEO_DRIVER_NAME "ACPI Video Driver" | |
42 | #define ACPI_VIDEO_BUS_NAME "Video Bus" | |
43 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" | |
44 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 | |
45 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 | |
46 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 | |
47 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 | |
48 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 | |
49 | ||
50 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x82 | |
51 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x83 | |
52 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x84 | |
53 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x85 | |
54 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x86 | |
55 | ||
56 | ||
57 | #define ACPI_VIDEO_HEAD_INVALID (~0u - 1) | |
58 | #define ACPI_VIDEO_HEAD_END (~0u) | |
59 | ||
60 | ||
61 | #define _COMPONENT ACPI_VIDEO_COMPONENT | |
62 | ACPI_MODULE_NAME ("acpi_video") | |
63 | ||
64 | MODULE_AUTHOR("Bruno Ducrot"); | |
65 | MODULE_DESCRIPTION(ACPI_VIDEO_DRIVER_NAME); | |
66 | MODULE_LICENSE("GPL"); | |
67 | ||
68 | static int acpi_video_bus_add (struct acpi_device *device); | |
69 | static int acpi_video_bus_remove (struct acpi_device *device, int type); | |
70 | static int acpi_video_bus_match (struct acpi_device *device, struct acpi_driver *driver); | |
71 | ||
72 | static struct acpi_driver acpi_video_bus = { | |
73 | .name = ACPI_VIDEO_DRIVER_NAME, | |
74 | .class = ACPI_VIDEO_CLASS, | |
75 | .ops = { | |
76 | .add = acpi_video_bus_add, | |
77 | .remove = acpi_video_bus_remove, | |
78 | .match = acpi_video_bus_match, | |
79 | }, | |
80 | }; | |
81 | ||
82 | struct acpi_video_bus_flags { | |
83 | u8 multihead:1; /* can switch video heads */ | |
84 | u8 rom:1; /* can retrieve a video rom */ | |
85 | u8 post:1; /* can configure the head to */ | |
86 | u8 reserved:5; | |
87 | }; | |
88 | ||
89 | struct acpi_video_bus_cap { | |
90 | u8 _DOS:1; /*Enable/Disable output switching*/ | |
91 | u8 _DOD:1; /*Enumerate all devices attached to display adapter*/ | |
92 | u8 _ROM:1; /*Get ROM Data*/ | |
93 | u8 _GPD:1; /*Get POST Device*/ | |
94 | u8 _SPD:1; /*Set POST Device*/ | |
95 | u8 _VPO:1; /*Video POST Options*/ | |
96 | u8 reserved:2; | |
97 | }; | |
98 | ||
99 | struct acpi_video_device_attrib{ | |
100 | u32 display_index:4; /* A zero-based instance of the Display*/ | |
101 | u32 display_port_attachment:4; /*This field differenates displays type*/ | |
102 | u32 display_type:4; /*Describe the specific type in use*/ | |
103 | u32 vendor_specific:4; /*Chipset Vendor Specifi*/ | |
104 | u32 bios_can_detect:1; /*BIOS can detect the device*/ | |
105 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
106 | the VGA device.*/ | |
107 | u32 pipe_id:3; /*For VGA multiple-head devices.*/ | |
108 | u32 reserved:10; /*Must be 0*/ | |
109 | u32 device_id_scheme:1; /*Device ID Scheme*/ | |
110 | }; | |
111 | ||
112 | struct acpi_video_enumerated_device { | |
113 | union { | |
114 | u32 int_val; | |
115 | struct acpi_video_device_attrib attrib; | |
116 | } value; | |
117 | struct acpi_video_device *bind_info; | |
118 | }; | |
119 | ||
120 | struct acpi_video_bus { | |
121 | acpi_handle handle; | |
122 | u8 dos_setting; | |
123 | struct acpi_video_enumerated_device *attached_array; | |
124 | u8 attached_count; | |
125 | struct acpi_video_bus_cap cap; | |
126 | struct acpi_video_bus_flags flags; | |
127 | struct semaphore sem; | |
128 | struct list_head video_device_list; | |
129 | struct proc_dir_entry *dir; | |
130 | }; | |
131 | ||
132 | struct acpi_video_device_flags { | |
133 | u8 crt:1; | |
134 | u8 lcd:1; | |
135 | u8 tvout:1; | |
136 | u8 bios:1; | |
137 | u8 unknown:1; | |
138 | u8 reserved:3; | |
139 | }; | |
140 | ||
141 | struct acpi_video_device_cap { | |
142 | u8 _ADR:1; /*Return the unique ID */ | |
143 | u8 _BCL:1; /*Query list of brightness control levels supported*/ | |
144 | u8 _BCM:1; /*Set the brightness level*/ | |
145 | u8 _DDC:1; /*Return the EDID for this device*/ | |
146 | u8 _DCS:1; /*Return status of output device*/ | |
147 | u8 _DGS:1; /*Query graphics state*/ | |
148 | u8 _DSS:1; /*Device state set*/ | |
149 | u8 _reserved:1; | |
150 | }; | |
151 | ||
152 | struct acpi_video_device_brightness { | |
153 | int curr; | |
154 | int count; | |
155 | int *levels; | |
156 | }; | |
157 | ||
158 | struct acpi_video_device { | |
159 | acpi_handle handle; | |
160 | unsigned long device_id; | |
161 | struct acpi_video_device_flags flags; | |
162 | struct acpi_video_device_cap cap; | |
163 | struct list_head entry; | |
164 | struct acpi_video_bus *video; | |
165 | struct acpi_device *dev; | |
166 | struct acpi_video_device_brightness *brightness; | |
167 | }; | |
168 | ||
169 | ||
170 | /* bus */ | |
171 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
172 | static struct file_operations acpi_video_bus_info_fops = { | |
173 | .open = acpi_video_bus_info_open_fs, | |
174 | .read = seq_read, | |
175 | .llseek = seq_lseek, | |
176 | .release = single_release, | |
177 | }; | |
178 | ||
179 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
180 | static struct file_operations acpi_video_bus_ROM_fops = { | |
181 | .open = acpi_video_bus_ROM_open_fs, | |
182 | .read = seq_read, | |
183 | .llseek = seq_lseek, | |
184 | .release = single_release, | |
185 | }; | |
186 | ||
187 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file); | |
188 | static struct file_operations acpi_video_bus_POST_info_fops = { | |
189 | .open = acpi_video_bus_POST_info_open_fs, | |
190 | .read = seq_read, | |
191 | .llseek = seq_lseek, | |
192 | .release = single_release, | |
193 | }; | |
194 | ||
195 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
196 | static struct file_operations acpi_video_bus_POST_fops = { | |
197 | .open = acpi_video_bus_POST_open_fs, | |
198 | .read = seq_read, | |
199 | .llseek = seq_lseek, | |
200 | .release = single_release, | |
201 | }; | |
202 | ||
203 | ||
204 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); | |
205 | static struct file_operations acpi_video_bus_DOS_fops = { | |
206 | .open = acpi_video_bus_DOS_open_fs, | |
207 | .read = seq_read, | |
208 | .llseek = seq_lseek, | |
209 | .release = single_release, | |
210 | }; | |
211 | ||
212 | /* device */ | |
213 | static int acpi_video_device_info_open_fs(struct inode *inode, struct file *file); | |
214 | static struct file_operations acpi_video_device_info_fops = { | |
215 | .open = acpi_video_device_info_open_fs, | |
216 | .read = seq_read, | |
217 | .llseek = seq_lseek, | |
218 | .release = single_release, | |
219 | }; | |
220 | ||
221 | static int acpi_video_device_state_open_fs(struct inode *inode, struct file *file); | |
222 | static struct file_operations acpi_video_device_state_fops = { | |
223 | .open = acpi_video_device_state_open_fs, | |
224 | .read = seq_read, | |
225 | .llseek = seq_lseek, | |
226 | .release = single_release, | |
227 | }; | |
228 | ||
229 | static int acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file); | |
230 | static struct file_operations acpi_video_device_brightness_fops = { | |
231 | .open = acpi_video_device_brightness_open_fs, | |
232 | .read = seq_read, | |
233 | .llseek = seq_lseek, | |
234 | .release = single_release, | |
235 | }; | |
236 | ||
237 | static int acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file); | |
238 | static struct file_operations acpi_video_device_EDID_fops = { | |
239 | .open = acpi_video_device_EDID_open_fs, | |
240 | .read = seq_read, | |
241 | .llseek = seq_lseek, | |
242 | .release = single_release, | |
243 | }; | |
244 | ||
245 | static char device_decode[][30] = { | |
246 | "motherboard VGA device", | |
247 | "PCI VGA device", | |
248 | "AGP VGA device", | |
249 | "UNKNOWN", | |
250 | }; | |
251 | ||
252 | static void acpi_video_device_notify ( acpi_handle handle, u32 event, void *data); | |
253 | static void acpi_video_device_rebind( struct acpi_video_bus *video); | |
254 | static void acpi_video_device_bind( struct acpi_video_bus *video, struct acpi_video_device *device); | |
255 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); | |
256 | static int acpi_video_switch_output( struct acpi_video_bus *video, int event); | |
257 | static int acpi_video_get_next_level( struct acpi_video_device *device, u32 level_current,u32 event); | |
258 | static void acpi_video_switch_brightness ( struct acpi_video_device *device, int event); | |
259 | ||
260 | ||
261 | /* -------------------------------------------------------------------------- | |
262 | Video Management | |
263 | -------------------------------------------------------------------------- */ | |
264 | ||
265 | /* device */ | |
266 | ||
267 | static int | |
268 | acpi_video_device_query ( | |
269 | struct acpi_video_device *device, | |
270 | unsigned long *state) | |
271 | { | |
272 | int status; | |
273 | ACPI_FUNCTION_TRACE("acpi_video_device_query"); | |
274 | status = acpi_evaluate_integer(device->handle, "_DGS", NULL, state); | |
275 | ||
276 | return_VALUE(status); | |
277 | } | |
278 | ||
279 | static int | |
280 | acpi_video_device_get_state ( | |
281 | struct acpi_video_device *device, | |
282 | unsigned long *state) | |
283 | { | |
284 | int status; | |
285 | ||
286 | ACPI_FUNCTION_TRACE("acpi_video_device_get_state"); | |
287 | ||
288 | status = acpi_evaluate_integer(device->handle, "_DCS", NULL, state); | |
289 | ||
290 | return_VALUE(status); | |
291 | } | |
292 | ||
293 | static int | |
294 | acpi_video_device_set_state ( | |
295 | struct acpi_video_device *device, | |
296 | int state) | |
297 | { | |
298 | int status; | |
299 | union acpi_object arg0 = {ACPI_TYPE_INTEGER}; | |
300 | struct acpi_object_list args = {1, &arg0}; | |
301 | ||
302 | ACPI_FUNCTION_TRACE("acpi_video_device_set_state"); | |
303 | ||
304 | arg0.integer.value = state; | |
305 | status = acpi_evaluate_integer(device->handle, "_DSS", &args, NULL); | |
306 | ||
307 | return_VALUE(status); | |
308 | } | |
309 | ||
310 | static int | |
311 | acpi_video_device_lcd_query_levels ( | |
312 | struct acpi_video_device *device, | |
313 | union acpi_object **levels) | |
314 | { | |
315 | int status; | |
316 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; | |
317 | union acpi_object *obj; | |
318 | ||
319 | ||
320 | ACPI_FUNCTION_TRACE("acpi_video_device_lcd_query_levels"); | |
321 | ||
322 | *levels = NULL; | |
323 | ||
324 | status = acpi_evaluate_object(device->handle, "_BCL", NULL, &buffer); | |
325 | if (!ACPI_SUCCESS(status)) | |
326 | return_VALUE(status); | |
327 | obj = (union acpi_object *) buffer.pointer; | |
328 | if (!obj && (obj->type != ACPI_TYPE_PACKAGE)) { | |
329 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _BCL data\n")); | |
330 | status = -EFAULT; | |
331 | goto err; | |
332 | } | |
333 | ||
334 | *levels = obj; | |
335 | ||
336 | return_VALUE(0); | |
337 | ||
338 | err: | |
339 | if (buffer.pointer) | |
340 | kfree(buffer.pointer); | |
341 | ||
342 | return_VALUE(status); | |
343 | } | |
344 | ||
345 | static int | |
346 | acpi_video_device_lcd_set_level ( | |
347 | struct acpi_video_device *device, | |
348 | int level) | |
349 | { | |
350 | int status; | |
351 | union acpi_object arg0 = {ACPI_TYPE_INTEGER}; | |
352 | struct acpi_object_list args = {1, &arg0}; | |
353 | ||
354 | ACPI_FUNCTION_TRACE("acpi_video_device_lcd_set_level"); | |
355 | ||
356 | arg0.integer.value = level; | |
357 | status = acpi_evaluate_object(device->handle, "_BCM", &args, NULL); | |
358 | ||
359 | printk(KERN_DEBUG "set_level status: %x\n", status); | |
360 | return_VALUE(status); | |
361 | } | |
362 | ||
363 | static int | |
364 | acpi_video_device_lcd_get_level_current ( | |
365 | struct acpi_video_device *device, | |
366 | unsigned long *level) | |
367 | { | |
368 | int status; | |
369 | ACPI_FUNCTION_TRACE("acpi_video_device_lcd_get_level_current"); | |
370 | ||
371 | status = acpi_evaluate_integer(device->handle, "_BQC", NULL, level); | |
372 | ||
373 | return_VALUE(status); | |
374 | } | |
375 | ||
376 | static int | |
377 | acpi_video_device_EDID ( | |
378 | struct acpi_video_device *device, | |
379 | union acpi_object **edid, | |
380 | ssize_t length) | |
381 | { | |
382 | int status; | |
383 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; | |
384 | union acpi_object *obj; | |
385 | union acpi_object arg0 = {ACPI_TYPE_INTEGER}; | |
386 | struct acpi_object_list args = {1, &arg0}; | |
387 | ||
388 | ACPI_FUNCTION_TRACE("acpi_video_device_get_EDID"); | |
389 | ||
390 | *edid = NULL; | |
391 | ||
392 | if (!device) | |
393 | return_VALUE(-ENODEV); | |
394 | if (length == 128) | |
395 | arg0.integer.value = 1; | |
396 | else if (length == 256) | |
397 | arg0.integer.value = 2; | |
398 | else | |
399 | return_VALUE(-EINVAL); | |
400 | ||
401 | status = acpi_evaluate_object(device->handle, "_DDC", &args, &buffer); | |
402 | if (ACPI_FAILURE(status)) | |
403 | return_VALUE(-ENODEV); | |
404 | ||
405 | obj = (union acpi_object *) buffer.pointer; | |
406 | ||
407 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
408 | *edid = obj; | |
409 | else { | |
410 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _DDC data\n")); | |
411 | status = -EFAULT; | |
412 | kfree(obj); | |
413 | } | |
414 | ||
415 | return_VALUE(status); | |
416 | } | |
417 | ||
418 | ||
419 | /* bus */ | |
420 | ||
421 | static int | |
422 | acpi_video_bus_set_POST ( | |
423 | struct acpi_video_bus *video, | |
424 | unsigned long option) | |
425 | { | |
426 | int status; | |
427 | unsigned long tmp; | |
428 | union acpi_object arg0 = {ACPI_TYPE_INTEGER}; | |
429 | struct acpi_object_list args = {1, &arg0}; | |
430 | ||
431 | ACPI_FUNCTION_TRACE("acpi_video_bus_set_POST"); | |
432 | ||
433 | arg0.integer.value = option; | |
434 | ||
435 | status = acpi_evaluate_integer(video->handle, "_SPD", &args, &tmp); | |
436 | if (ACPI_SUCCESS(status)) | |
437 | status = tmp ? (-EINVAL):(AE_OK); | |
438 | ||
439 | return_VALUE(status); | |
440 | } | |
441 | ||
442 | static int | |
443 | acpi_video_bus_get_POST ( | |
444 | struct acpi_video_bus *video, | |
445 | unsigned long *id) | |
446 | { | |
447 | int status; | |
448 | ||
449 | ACPI_FUNCTION_TRACE("acpi_video_bus_get_POST"); | |
450 | ||
451 | status = acpi_evaluate_integer(video->handle, "_GPD", NULL, id); | |
452 | ||
453 | return_VALUE(status); | |
454 | } | |
455 | ||
456 | static int | |
457 | acpi_video_bus_POST_options ( | |
458 | struct acpi_video_bus *video, | |
459 | unsigned long *options) | |
460 | { | |
461 | int status; | |
462 | ACPI_FUNCTION_TRACE("acpi_video_bus_POST_options"); | |
463 | ||
464 | status = acpi_evaluate_integer(video->handle, "_VPO", NULL, options); | |
465 | *options &= 3; | |
466 | ||
467 | return_VALUE(status); | |
468 | } | |
469 | ||
470 | /* | |
471 | * Arg: | |
472 | * video : video bus device pointer | |
473 | * bios_flag : | |
474 | * 0. The system BIOS should NOT automatically switch(toggle) | |
475 | * the active display output. | |
476 | * 1. The system BIOS should automatically switch (toggle) the | |
477 | * active display output. No swich event. | |
478 | * 2. The _DGS value should be locked. | |
479 | * 3. The system BIOS should not automatically switch (toggle) the | |
480 | * active display output, but instead generate the display switch | |
481 | * event notify code. | |
482 | * lcd_flag : | |
483 | * 0. The system BIOS should automatically control the brightness level | |
484 | * of the LCD, when the power changes from AC to DC | |
485 | * 1. The system BIOS should NOT automatically control the brightness | |
486 | * level of the LCD, when the power changes from AC to DC. | |
487 | * Return Value: | |
488 | * -1 wrong arg. | |
489 | */ | |
490 | ||
491 | static int | |
492 | acpi_video_bus_DOS( | |
493 | struct acpi_video_bus *video, | |
494 | int bios_flag, | |
495 | int lcd_flag) | |
496 | { | |
497 | acpi_integer status = 0; | |
498 | union acpi_object arg0 = {ACPI_TYPE_INTEGER}; | |
499 | struct acpi_object_list args = {1, &arg0}; | |
500 | ||
501 | ACPI_FUNCTION_TRACE("acpi_video_bus_DOS"); | |
502 | ||
503 | if (bios_flag < 0 || bios_flag >3 || lcd_flag < 0 || lcd_flag > 1){ | |
504 | status = -1; | |
505 | goto Failed; | |
506 | } | |
507 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
508 | video->dos_setting = arg0.integer.value; | |
509 | acpi_evaluate_object(video->handle, "_DOS", &args, NULL); | |
510 | ||
511 | Failed: | |
512 | return_VALUE(status); | |
513 | } | |
514 | ||
515 | /* | |
516 | * Arg: | |
517 | * device : video output device (LCD, CRT, ..) | |
518 | * | |
519 | * Return Value: | |
520 | * None | |
521 | * | |
522 | * Find out all required AML method defined under the output | |
523 | * device. | |
524 | */ | |
525 | ||
526 | static void | |
527 | acpi_video_device_find_cap (struct acpi_video_device *device) | |
528 | { | |
529 | acpi_integer status; | |
530 | acpi_handle h_dummy1; | |
531 | int i; | |
532 | union acpi_object *obj = NULL; | |
533 | struct acpi_video_device_brightness *br = NULL; | |
534 | ||
535 | ACPI_FUNCTION_TRACE("acpi_video_device_find_cap"); | |
536 | ||
537 | memset( &device->cap, 0, 4); | |
538 | ||
539 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_ADR", &h_dummy1))) { | |
540 | device->cap._ADR = 1; | |
541 | } | |
542 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_BCL", &h_dummy1))) { | |
543 | device->cap._BCL= 1; | |
544 | } | |
545 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_BCM", &h_dummy1))) { | |
546 | device->cap._BCM= 1; | |
547 | } | |
548 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DDC", &h_dummy1))) { | |
549 | device->cap._DDC= 1; | |
550 | } | |
551 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DCS", &h_dummy1))) { | |
552 | device->cap._DCS = 1; | |
553 | } | |
554 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DGS", &h_dummy1))) { | |
555 | device->cap._DGS = 1; | |
556 | } | |
557 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DSS", &h_dummy1))) { | |
558 | device->cap._DSS = 1; | |
559 | } | |
560 | ||
561 | status = acpi_video_device_lcd_query_levels(device, &obj); | |
562 | ||
563 | if (obj && obj->type == ACPI_TYPE_PACKAGE && obj->package.count >= 2) { | |
564 | int count = 0; | |
565 | union acpi_object *o; | |
566 | ||
d1dd0c23 | 567 | br = kmalloc(sizeof(*br), GFP_KERNEL); |
1da177e4 LT |
568 | if (!br) { |
569 | printk(KERN_ERR "can't allocate memory\n"); | |
570 | } else { | |
d1dd0c23 PM |
571 | memset(br, 0, sizeof(*br)); |
572 | br->levels = kmalloc(obj->package.count * | |
573 | sizeof *(br->levels), GFP_KERNEL); | |
1da177e4 LT |
574 | if (!br->levels) |
575 | goto out; | |
576 | ||
577 | for (i = 0; i < obj->package.count; i++) { | |
578 | o = (union acpi_object *) &obj->package.elements[i]; | |
579 | if (o->type != ACPI_TYPE_INTEGER) { | |
580 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid data\n")); | |
581 | continue; | |
582 | } | |
583 | br->levels[count] = (u32) o->integer.value; | |
584 | count++; | |
585 | } | |
586 | out: | |
587 | if (count < 2) { | |
d1dd0c23 | 588 | kfree(br->levels); |
1da177e4 LT |
589 | kfree(br); |
590 | } else { | |
591 | br->count = count; | |
592 | device->brightness = br; | |
593 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "found %d brightness levels\n", count)); | |
594 | } | |
595 | } | |
596 | } | |
597 | ||
d1dd0c23 | 598 | kfree(obj); |
1da177e4 LT |
599 | |
600 | return_VOID; | |
601 | } | |
602 | ||
603 | /* | |
604 | * Arg: | |
605 | * device : video output device (VGA) | |
606 | * | |
607 | * Return Value: | |
608 | * None | |
609 | * | |
610 | * Find out all required AML method defined under the video bus device. | |
611 | */ | |
612 | ||
613 | static void | |
614 | acpi_video_bus_find_cap (struct acpi_video_bus *video) | |
615 | { | |
616 | acpi_handle h_dummy1; | |
617 | ||
618 | memset(&video->cap ,0, 4); | |
619 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_DOS", &h_dummy1))) { | |
620 | video->cap._DOS = 1; | |
621 | } | |
622 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_DOD", &h_dummy1))) { | |
623 | video->cap._DOD = 1; | |
624 | } | |
625 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_ROM", &h_dummy1))) { | |
626 | video->cap._ROM = 1; | |
627 | } | |
628 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_GPD", &h_dummy1))) { | |
629 | video->cap._GPD = 1; | |
630 | } | |
631 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_SPD", &h_dummy1))) { | |
632 | video->cap._SPD = 1; | |
633 | } | |
634 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_VPO", &h_dummy1))) { | |
635 | video->cap._VPO = 1; | |
636 | } | |
637 | } | |
638 | ||
639 | /* | |
640 | * Check whether the video bus device has required AML method to | |
641 | * support the desired features | |
642 | */ | |
643 | ||
644 | static int | |
645 | acpi_video_bus_check ( | |
646 | struct acpi_video_bus *video) | |
647 | { | |
648 | acpi_status status = -ENOENT; | |
649 | ||
650 | ||
651 | ACPI_FUNCTION_TRACE("acpi_video_bus_check"); | |
652 | ||
653 | if (!video) | |
654 | return_VALUE(-EINVAL); | |
655 | ||
656 | /* Since there is no HID, CID and so on for VGA driver, we have | |
657 | * to check well known required nodes. | |
658 | */ | |
659 | ||
660 | /* Does this device able to support video switching ? */ | |
661 | if(video->cap._DOS){ | |
662 | video->flags.multihead = 1; | |
663 | status = 0; | |
664 | } | |
665 | ||
666 | /* Does this device able to retrieve a retrieve a video ROM ? */ | |
667 | if(video->cap._ROM){ | |
668 | video->flags.rom = 1; | |
669 | status = 0; | |
670 | } | |
671 | ||
672 | /* Does this device able to configure which video device to POST ? */ | |
673 | if(video->cap._GPD && video->cap._SPD && video->cap._VPO){ | |
674 | video->flags.post = 1; | |
675 | status = 0; | |
676 | } | |
677 | ||
678 | return_VALUE(status); | |
679 | } | |
680 | ||
681 | /* -------------------------------------------------------------------------- | |
682 | FS Interface (/proc) | |
683 | -------------------------------------------------------------------------- */ | |
684 | ||
685 | static struct proc_dir_entry *acpi_video_dir; | |
686 | ||
687 | /* video devices */ | |
688 | ||
689 | static int | |
690 | acpi_video_device_info_seq_show ( | |
691 | struct seq_file *seq, | |
692 | void *offset) | |
693 | { | |
694 | struct acpi_video_device *dev = (struct acpi_video_device *) seq->private; | |
695 | ||
696 | ACPI_FUNCTION_TRACE("acpi_video_device_info_seq_show"); | |
697 | ||
698 | if (!dev) | |
699 | goto end; | |
700 | ||
701 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
702 | seq_printf(seq, "type: "); | |
703 | if (dev->flags.crt) | |
704 | seq_printf(seq, "CRT\n"); | |
705 | else if (dev->flags.lcd) | |
706 | seq_printf(seq, "LCD\n"); | |
707 | else if (dev->flags.tvout) | |
708 | seq_printf(seq, "TVOUT\n"); | |
709 | else | |
710 | seq_printf(seq, "UNKNOWN\n"); | |
711 | ||
712 | seq_printf(seq,"known by bios: %s\n", | |
713 | dev->flags.bios ? "yes":"no"); | |
714 | ||
715 | end: | |
716 | return_VALUE(0); | |
717 | } | |
718 | ||
719 | static int | |
720 | acpi_video_device_info_open_fs ( | |
721 | struct inode *inode, | |
722 | struct file *file) | |
723 | { | |
724 | return single_open(file, acpi_video_device_info_seq_show, | |
725 | PDE(inode)->data); | |
726 | } | |
727 | ||
728 | static int | |
729 | acpi_video_device_state_seq_show ( | |
730 | struct seq_file *seq, | |
731 | void *offset) | |
732 | { | |
733 | int status; | |
734 | struct acpi_video_device *dev = (struct acpi_video_device *) seq->private; | |
735 | unsigned long state; | |
736 | ||
737 | ACPI_FUNCTION_TRACE("acpi_video_device_state_seq_show"); | |
738 | ||
739 | if (!dev) | |
740 | goto end; | |
741 | ||
742 | status = acpi_video_device_get_state(dev, &state); | |
743 | seq_printf(seq, "state: "); | |
744 | if (ACPI_SUCCESS(status)) | |
745 | seq_printf(seq, "0x%02lx\n", state); | |
746 | else | |
747 | seq_printf(seq, "<not supported>\n"); | |
748 | ||
749 | status = acpi_video_device_query(dev, &state); | |
750 | seq_printf(seq, "query: "); | |
751 | if (ACPI_SUCCESS(status)) | |
752 | seq_printf(seq, "0x%02lx\n", state); | |
753 | else | |
754 | seq_printf(seq, "<not supported>\n"); | |
755 | ||
756 | end: | |
757 | return_VALUE(0); | |
758 | } | |
759 | ||
760 | static int | |
761 | acpi_video_device_state_open_fs ( | |
762 | struct inode *inode, | |
763 | struct file *file) | |
764 | { | |
765 | return single_open(file, acpi_video_device_state_seq_show, | |
766 | PDE(inode)->data); | |
767 | } | |
768 | ||
769 | static ssize_t | |
770 | acpi_video_device_write_state ( | |
771 | struct file *file, | |
772 | const char __user *buffer, | |
773 | size_t count, | |
774 | loff_t *data) | |
775 | { | |
776 | int status; | |
777 | struct seq_file *m = (struct seq_file *) file->private_data; | |
778 | struct acpi_video_device *dev = (struct acpi_video_device *) m->private; | |
779 | char str[12] = {0}; | |
780 | u32 state = 0; | |
781 | ||
782 | ACPI_FUNCTION_TRACE("acpi_video_device_write_state"); | |
783 | ||
784 | if (!dev || count + 1 > sizeof str) | |
785 | return_VALUE(-EINVAL); | |
786 | ||
787 | if (copy_from_user(str, buffer, count)) | |
788 | return_VALUE(-EFAULT); | |
789 | ||
790 | str[count] = 0; | |
791 | state = simple_strtoul(str, NULL, 0); | |
792 | state &= ((1ul<<31) | (1ul<<30) | (1ul<<0)); | |
793 | ||
794 | status = acpi_video_device_set_state(dev, state); | |
795 | ||
796 | if (status) | |
797 | return_VALUE(-EFAULT); | |
798 | ||
799 | return_VALUE(count); | |
800 | } | |
801 | ||
802 | static int | |
803 | acpi_video_device_brightness_seq_show ( | |
804 | struct seq_file *seq, | |
805 | void *offset) | |
806 | { | |
807 | struct acpi_video_device *dev = (struct acpi_video_device *) seq->private; | |
808 | int i; | |
809 | ||
810 | ACPI_FUNCTION_TRACE("acpi_video_device_brightness_seq_show"); | |
811 | ||
812 | if (!dev || !dev->brightness) { | |
813 | seq_printf(seq, "<not supported>\n"); | |
814 | return_VALUE(0); | |
815 | } | |
816 | ||
817 | seq_printf(seq, "levels: "); | |
818 | for (i = 0; i < dev->brightness->count; i++) | |
819 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
820 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
821 | ||
822 | return_VALUE(0); | |
823 | } | |
824 | ||
825 | static int | |
826 | acpi_video_device_brightness_open_fs ( | |
827 | struct inode *inode, | |
828 | struct file *file) | |
829 | { | |
830 | return single_open(file, acpi_video_device_brightness_seq_show, | |
831 | PDE(inode)->data); | |
832 | } | |
833 | ||
834 | static ssize_t | |
835 | acpi_video_device_write_brightness ( | |
836 | struct file *file, | |
837 | const char __user *buffer, | |
838 | size_t count, | |
839 | loff_t *data) | |
840 | { | |
841 | struct seq_file *m = (struct seq_file *) file->private_data; | |
842 | struct acpi_video_device *dev = (struct acpi_video_device *) m->private; | |
843 | char str[4] = {0}; | |
844 | unsigned int level = 0; | |
845 | int i; | |
846 | ||
847 | ACPI_FUNCTION_TRACE("acpi_video_device_write_brightness"); | |
848 | ||
849 | if (!dev || count + 1 > sizeof str) | |
850 | return_VALUE(-EINVAL); | |
851 | ||
852 | if (copy_from_user(str, buffer, count)) | |
853 | return_VALUE(-EFAULT); | |
854 | ||
855 | str[count] = 0; | |
856 | level = simple_strtoul(str, NULL, 0); | |
857 | ||
858 | if (level > 100) | |
859 | return_VALUE(-EFAULT); | |
860 | ||
861 | /* validate though the list of available levels */ | |
862 | for (i = 0; i < dev->brightness->count; i++) | |
863 | if (level == dev->brightness->levels[i]) { | |
864 | if (ACPI_SUCCESS(acpi_video_device_lcd_set_level(dev, level))) | |
865 | dev->brightness->curr = level; | |
866 | break; | |
867 | } | |
868 | ||
869 | return_VALUE(count); | |
870 | } | |
871 | ||
872 | static int | |
873 | acpi_video_device_EDID_seq_show ( | |
874 | struct seq_file *seq, | |
875 | void *offset) | |
876 | { | |
877 | struct acpi_video_device *dev = (struct acpi_video_device *) seq->private; | |
878 | int status; | |
879 | int i; | |
880 | union acpi_object *edid = NULL; | |
881 | ||
882 | ACPI_FUNCTION_TRACE("acpi_video_device_EDID_seq_show"); | |
883 | ||
884 | if (!dev) | |
885 | goto out; | |
886 | ||
887 | status = acpi_video_device_EDID (dev, &edid, 128); | |
888 | if (ACPI_FAILURE(status)) { | |
889 | status = acpi_video_device_EDID (dev, &edid, 256); | |
890 | } | |
891 | ||
892 | if (ACPI_FAILURE(status)) { | |
893 | goto out; | |
894 | } | |
895 | ||
896 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
897 | for (i = 0; i < edid->buffer.length; i++) | |
898 | seq_putc(seq, edid->buffer.pointer[i]); | |
899 | } | |
900 | ||
901 | out: | |
902 | if (!edid) | |
903 | seq_printf(seq, "<not supported>\n"); | |
904 | else | |
905 | kfree(edid); | |
906 | ||
907 | return_VALUE(0); | |
908 | } | |
909 | ||
910 | static int | |
911 | acpi_video_device_EDID_open_fs ( | |
912 | struct inode *inode, | |
913 | struct file *file) | |
914 | { | |
915 | return single_open(file, acpi_video_device_EDID_seq_show, | |
916 | PDE(inode)->data); | |
917 | } | |
918 | ||
919 | ||
920 | static int | |
921 | acpi_video_device_add_fs ( | |
922 | struct acpi_device *device) | |
923 | { | |
924 | struct proc_dir_entry *entry = NULL; | |
925 | struct acpi_video_device *vid_dev; | |
926 | ||
927 | ACPI_FUNCTION_TRACE("acpi_video_device_add_fs"); | |
928 | ||
929 | if (!device) | |
930 | return_VALUE(-ENODEV); | |
931 | ||
932 | vid_dev = (struct acpi_video_device *) acpi_driver_data(device); | |
933 | if (!vid_dev) | |
934 | return_VALUE(-ENODEV); | |
935 | ||
936 | if (!acpi_device_dir(device)) { | |
937 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
938 | vid_dev->video->dir); | |
939 | if (!acpi_device_dir(device)) | |
940 | return_VALUE(-ENODEV); | |
941 | acpi_device_dir(device)->owner = THIS_MODULE; | |
942 | } | |
943 | ||
944 | /* 'info' [R] */ | |
945 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
946 | if (!entry) | |
947 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
948 | "Unable to create 'info' fs entry\n")); | |
949 | else { | |
950 | entry->proc_fops = &acpi_video_device_info_fops; | |
951 | entry->data = acpi_driver_data(device); | |
952 | entry->owner = THIS_MODULE; | |
953 | } | |
954 | ||
955 | /* 'state' [R/W] */ | |
956 | entry = create_proc_entry("state", S_IFREG|S_IRUGO|S_IWUSR, acpi_device_dir(device)); | |
957 | if (!entry) | |
958 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
959 | "Unable to create 'state' fs entry\n")); | |
960 | else { | |
961 | entry->proc_fops = &acpi_video_device_state_fops; | |
962 | entry->proc_fops->write = acpi_video_device_write_state; | |
963 | entry->data = acpi_driver_data(device); | |
964 | entry->owner = THIS_MODULE; | |
965 | } | |
966 | ||
967 | /* 'brightness' [R/W] */ | |
968 | entry = create_proc_entry("brightness", S_IFREG|S_IRUGO|S_IWUSR, acpi_device_dir(device)); | |
969 | if (!entry) | |
970 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
971 | "Unable to create 'brightness' fs entry\n")); | |
972 | else { | |
973 | entry->proc_fops = &acpi_video_device_brightness_fops; | |
974 | entry->proc_fops->write = acpi_video_device_write_brightness; | |
975 | entry->data = acpi_driver_data(device); | |
976 | entry->owner = THIS_MODULE; | |
977 | } | |
978 | ||
979 | /* 'EDID' [R] */ | |
980 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); | |
981 | if (!entry) | |
982 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
983 | "Unable to create 'brightness' fs entry\n")); | |
984 | else { | |
985 | entry->proc_fops = &acpi_video_device_EDID_fops; | |
986 | entry->data = acpi_driver_data(device); | |
987 | entry->owner = THIS_MODULE; | |
988 | } | |
989 | ||
990 | return_VALUE(0); | |
991 | } | |
992 | ||
993 | static int | |
994 | acpi_video_device_remove_fs ( | |
995 | struct acpi_device *device) | |
996 | { | |
997 | struct acpi_video_device *vid_dev; | |
998 | ACPI_FUNCTION_TRACE("acpi_video_device_remove_fs"); | |
999 | ||
1000 | vid_dev = (struct acpi_video_device *) acpi_driver_data(device); | |
1001 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) | |
1002 | return_VALUE(-ENODEV); | |
1003 | ||
1004 | if (acpi_device_dir(device)) { | |
1005 | remove_proc_entry("info", acpi_device_dir(device)); | |
1006 | remove_proc_entry("state", acpi_device_dir(device)); | |
1007 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
1008 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
1009 | remove_proc_entry(acpi_device_bid(device), | |
1010 | vid_dev->video->dir); | |
1011 | acpi_device_dir(device) = NULL; | |
1012 | } | |
1013 | ||
1014 | return_VALUE(0); | |
1015 | } | |
1016 | ||
1017 | ||
1018 | /* video bus */ | |
1019 | static int | |
1020 | acpi_video_bus_info_seq_show ( | |
1021 | struct seq_file *seq, | |
1022 | void *offset) | |
1023 | { | |
1024 | struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private; | |
1025 | ||
1026 | ACPI_FUNCTION_TRACE("acpi_video_bus_info_seq_show"); | |
1027 | ||
1028 | if (!video) | |
1029 | goto end; | |
1030 | ||
1031 | seq_printf(seq, "Switching heads: %s\n", | |
1032 | video->flags.multihead ? "yes":"no"); | |
1033 | seq_printf(seq, "Video ROM: %s\n", | |
1034 | video->flags.rom ? "yes":"no"); | |
1035 | seq_printf(seq, "Device to be POSTed on boot: %s\n", | |
1036 | video->flags.post ? "yes":"no"); | |
1037 | ||
1038 | end: | |
1039 | return_VALUE(0); | |
1040 | } | |
1041 | ||
1042 | static int | |
1043 | acpi_video_bus_info_open_fs ( | |
1044 | struct inode *inode, | |
1045 | struct file *file) | |
1046 | { | |
1047 | return single_open(file, acpi_video_bus_info_seq_show, PDE(inode)->data); | |
1048 | } | |
1049 | ||
1050 | static int | |
1051 | acpi_video_bus_ROM_seq_show ( | |
1052 | struct seq_file *seq, | |
1053 | void *offset) | |
1054 | { | |
1055 | struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private; | |
1056 | ||
1057 | ACPI_FUNCTION_TRACE("acpi_video_bus_ROM_seq_show"); | |
1058 | ||
1059 | if (!video) | |
1060 | goto end; | |
1061 | ||
1062 | printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__); | |
1063 | seq_printf(seq, "<TODO>\n"); | |
1064 | ||
1065 | end: | |
1066 | return_VALUE(0); | |
1067 | } | |
1068 | ||
1069 | static int | |
1070 | acpi_video_bus_ROM_open_fs ( | |
1071 | struct inode *inode, | |
1072 | struct file *file) | |
1073 | { | |
1074 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1075 | } | |
1076 | ||
1077 | static int | |
1078 | acpi_video_bus_POST_info_seq_show ( | |
1079 | struct seq_file *seq, | |
1080 | void *offset) | |
1081 | { | |
1082 | struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private; | |
1083 | unsigned long options; | |
1084 | int status; | |
1085 | ||
1086 | ACPI_FUNCTION_TRACE("acpi_video_bus_POST_info_seq_show"); | |
1087 | ||
1088 | if (!video) | |
1089 | goto end; | |
1090 | ||
1091 | status = acpi_video_bus_POST_options(video, &options); | |
1092 | if (ACPI_SUCCESS(status)) { | |
1093 | if (!(options & 1)) { | |
1094 | printk(KERN_WARNING PREFIX "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1095 | printk(KERN_WARNING PREFIX "This indicate a BIOS bug. Please contact the manufacturer.\n"); | |
1096 | } | |
1097 | printk("%lx\n", options); | |
1098 | seq_printf(seq, "can POST: <intgrated video>"); | |
1099 | if (options & 2) | |
1100 | seq_printf(seq, " <PCI video>"); | |
1101 | if (options & 4) | |
1102 | seq_printf(seq, " <AGP video>"); | |
1103 | seq_putc(seq, '\n'); | |
1104 | } else | |
1105 | seq_printf(seq, "<not supported>\n"); | |
1106 | end: | |
1107 | return_VALUE(0); | |
1108 | } | |
1109 | ||
1110 | static int | |
1111 | acpi_video_bus_POST_info_open_fs ( | |
1112 | struct inode *inode, | |
1113 | struct file *file) | |
1114 | { | |
1115 | return single_open(file, acpi_video_bus_POST_info_seq_show, PDE(inode)->data); | |
1116 | } | |
1117 | ||
1118 | static int | |
1119 | acpi_video_bus_POST_seq_show ( | |
1120 | struct seq_file *seq, | |
1121 | void *offset) | |
1122 | { | |
1123 | struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private; | |
1124 | int status; | |
1125 | unsigned long id; | |
1126 | ||
1127 | ACPI_FUNCTION_TRACE("acpi_video_bus_POST_seq_show"); | |
1128 | ||
1129 | if (!video) | |
1130 | goto end; | |
1131 | ||
1132 | status = acpi_video_bus_get_POST (video, &id); | |
1133 | if (!ACPI_SUCCESS(status)) { | |
1134 | seq_printf(seq, "<not supported>\n"); | |
1135 | goto end; | |
1136 | } | |
1137 | seq_printf(seq, "device posted is <%s>\n", device_decode[id & 3]); | |
1138 | ||
1139 | end: | |
1140 | return_VALUE(0); | |
1141 | } | |
1142 | ||
1143 | static int | |
1144 | acpi_video_bus_DOS_seq_show ( | |
1145 | struct seq_file *seq, | |
1146 | void *offset) | |
1147 | { | |
1148 | struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private; | |
1149 | ||
1150 | ACPI_FUNCTION_TRACE("acpi_video_bus_DOS_seq_show"); | |
1151 | ||
1152 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting ); | |
1153 | ||
1154 | return_VALUE(0); | |
1155 | } | |
1156 | ||
1157 | static int | |
1158 | acpi_video_bus_POST_open_fs ( | |
1159 | struct inode *inode, | |
1160 | struct file *file) | |
1161 | { | |
1162 | return single_open(file, acpi_video_bus_POST_seq_show, PDE(inode)->data); | |
1163 | } | |
1164 | ||
1165 | static int | |
1166 | acpi_video_bus_DOS_open_fs ( | |
1167 | struct inode *inode, | |
1168 | struct file *file) | |
1169 | { | |
1170 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1171 | } | |
1172 | ||
1173 | static ssize_t | |
1174 | acpi_video_bus_write_POST ( | |
1175 | struct file *file, | |
1176 | const char __user *buffer, | |
1177 | size_t count, | |
1178 | loff_t *data) | |
1179 | { | |
1180 | int status; | |
1181 | struct seq_file *m = (struct seq_file *) file->private_data; | |
1182 | struct acpi_video_bus *video = (struct acpi_video_bus *) m->private; | |
1183 | char str[12] = {0}; | |
1184 | unsigned long opt, options; | |
1185 | ||
1186 | ACPI_FUNCTION_TRACE("acpi_video_bus_write_POST"); | |
1187 | ||
1188 | ||
1189 | if (!video || count + 1 > sizeof str) | |
1190 | return_VALUE(-EINVAL); | |
1191 | ||
1192 | status = acpi_video_bus_POST_options(video, &options); | |
1193 | if (!ACPI_SUCCESS(status)) | |
1194 | return_VALUE(-EINVAL); | |
1195 | ||
1196 | if (copy_from_user(str, buffer, count)) | |
1197 | return_VALUE(-EFAULT); | |
1198 | ||
1199 | str[count] = 0; | |
1200 | opt = strtoul(str, NULL, 0); | |
1201 | if (opt > 3) | |
1202 | return_VALUE(-EFAULT); | |
1203 | ||
1204 | /* just in case an OEM 'forget' the motherboard... */ | |
1205 | options |= 1; | |
1206 | ||
1207 | if (options & (1ul << opt)) { | |
1208 | status = acpi_video_bus_set_POST (video, opt); | |
1209 | if (!ACPI_SUCCESS(status)) | |
1210 | return_VALUE(-EFAULT); | |
1211 | ||
1212 | } | |
1213 | ||
1214 | ||
1215 | return_VALUE(count); | |
1216 | } | |
1217 | ||
1218 | static ssize_t | |
1219 | acpi_video_bus_write_DOS ( | |
1220 | struct file *file, | |
1221 | const char __user *buffer, | |
1222 | size_t count, | |
1223 | loff_t *data) | |
1224 | { | |
1225 | int status; | |
1226 | struct seq_file *m = (struct seq_file *) file->private_data; | |
1227 | struct acpi_video_bus *video = (struct acpi_video_bus *) m->private; | |
1228 | char str[12] = {0}; | |
1229 | unsigned long opt; | |
1230 | ||
1231 | ACPI_FUNCTION_TRACE("acpi_video_bus_write_DOS"); | |
1232 | ||
1233 | ||
1234 | if (!video || count + 1 > sizeof str) | |
1235 | return_VALUE(-EINVAL); | |
1236 | ||
1237 | if (copy_from_user(str, buffer, count)) | |
1238 | return_VALUE(-EFAULT); | |
1239 | ||
1240 | str[count] = 0; | |
1241 | opt = strtoul(str, NULL, 0); | |
1242 | if (opt > 7) | |
1243 | return_VALUE(-EFAULT); | |
1244 | ||
1245 | status = acpi_video_bus_DOS (video, opt & 0x3, (opt & 0x4)>>2); | |
1246 | ||
1247 | if (!ACPI_SUCCESS(status)) | |
1248 | return_VALUE(-EFAULT); | |
1249 | ||
1250 | return_VALUE(count); | |
1251 | } | |
1252 | ||
1253 | static int | |
1254 | acpi_video_bus_add_fs ( | |
1255 | struct acpi_device *device) | |
1256 | { | |
1257 | struct proc_dir_entry *entry = NULL; | |
1258 | struct acpi_video_bus *video; | |
1259 | ||
1260 | ACPI_FUNCTION_TRACE("acpi_video_bus_add_fs"); | |
1261 | ||
1262 | video = (struct acpi_video_bus *) acpi_driver_data(device); | |
1263 | ||
1264 | if (!acpi_device_dir(device)) { | |
1265 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
1266 | acpi_video_dir); | |
1267 | if (!acpi_device_dir(device)) | |
1268 | return_VALUE(-ENODEV); | |
1269 | video->dir = acpi_device_dir(device); | |
1270 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1271 | } | |
1272 | ||
1273 | /* 'info' [R] */ | |
1274 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1275 | if (!entry) | |
1276 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'info' fs entry\n")); | |
1277 | else { | |
1278 | entry->proc_fops = &acpi_video_bus_info_fops; | |
1279 | entry->data = acpi_driver_data(device); | |
1280 | entry->owner = THIS_MODULE; | |
1281 | } | |
1282 | ||
1283 | /* 'ROM' [R] */ | |
1284 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); | |
1285 | if (!entry) | |
1286 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'ROM' fs entry\n")); | |
1287 | else { | |
1288 | entry->proc_fops = &acpi_video_bus_ROM_fops; | |
1289 | entry->data = acpi_driver_data(device); | |
1290 | entry->owner = THIS_MODULE; | |
1291 | } | |
1292 | ||
1293 | /* 'POST_info' [R] */ | |
1294 | entry = create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); | |
1295 | if (!entry) | |
1296 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'POST_info' fs entry\n")); | |
1297 | else { | |
1298 | entry->proc_fops = &acpi_video_bus_POST_info_fops; | |
1299 | entry->data = acpi_driver_data(device); | |
1300 | entry->owner = THIS_MODULE; | |
1301 | } | |
1302 | ||
1303 | /* 'POST' [R/W] */ | |
1304 | entry = create_proc_entry("POST", S_IFREG|S_IRUGO|S_IRUSR, acpi_device_dir(device)); | |
1305 | if (!entry) | |
1306 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'POST' fs entry\n")); | |
1307 | else { | |
1308 | entry->proc_fops = &acpi_video_bus_POST_fops; | |
1309 | entry->proc_fops->write = acpi_video_bus_write_POST; | |
1310 | entry->data = acpi_driver_data(device); | |
1311 | entry->owner = THIS_MODULE; | |
1312 | } | |
1313 | ||
1314 | /* 'DOS' [R/W] */ | |
1315 | entry = create_proc_entry("DOS", S_IFREG|S_IRUGO|S_IRUSR, acpi_device_dir(device)); | |
1316 | if (!entry) | |
1317 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'DOS' fs entry\n")); | |
1318 | else { | |
1319 | entry->proc_fops = &acpi_video_bus_DOS_fops; | |
1320 | entry->proc_fops->write = acpi_video_bus_write_DOS; | |
1321 | entry->data = acpi_driver_data(device); | |
1322 | entry->owner = THIS_MODULE; | |
1323 | } | |
1324 | ||
1325 | return_VALUE(0); | |
1326 | } | |
1327 | ||
1328 | static int | |
1329 | acpi_video_bus_remove_fs ( | |
1330 | struct acpi_device *device) | |
1331 | { | |
1332 | struct acpi_video_bus *video; | |
1333 | ||
1334 | ACPI_FUNCTION_TRACE("acpi_video_bus_remove_fs"); | |
1335 | ||
1336 | video = (struct acpi_video_bus *) acpi_driver_data(device); | |
1337 | ||
1338 | if (acpi_device_dir(device)) { | |
1339 | remove_proc_entry("info", acpi_device_dir(device)); | |
1340 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1341 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1342 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1343 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
1344 | remove_proc_entry(acpi_device_bid(device), | |
1345 | acpi_video_dir); | |
1346 | acpi_device_dir(device) = NULL; | |
1347 | } | |
1348 | ||
1349 | return_VALUE(0); | |
1350 | } | |
1351 | ||
1352 | /* -------------------------------------------------------------------------- | |
1353 | Driver Interface | |
1354 | -------------------------------------------------------------------------- */ | |
1355 | ||
1356 | /* device interface */ | |
1357 | ||
1358 | static int | |
1359 | acpi_video_bus_get_one_device ( | |
1360 | struct acpi_device *device, | |
1361 | struct acpi_video_bus *video) | |
1362 | { | |
1363 | unsigned long device_id; | |
1364 | int status, result; | |
1365 | struct acpi_video_device *data; | |
1366 | ||
1367 | ACPI_FUNCTION_TRACE("acpi_video_bus_get_one_device"); | |
1368 | ||
1369 | if (!device || !video) | |
1370 | return_VALUE(-EINVAL); | |
1371 | ||
1372 | status = acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1373 | if (ACPI_SUCCESS(status)) { | |
1374 | ||
1375 | data = kmalloc(sizeof(struct acpi_video_device), GFP_KERNEL); | |
1376 | if (!data) | |
1377 | return_VALUE(-ENOMEM); | |
1378 | ||
1379 | memset(data, 0, sizeof(struct acpi_video_device)); | |
1380 | ||
1381 | data->handle = device->handle; | |
1382 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); | |
1383 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1384 | acpi_driver_data(device) = data; | |
1385 | ||
1386 | data->device_id = device_id; | |
1387 | data->video = video; | |
1388 | data->dev = device; | |
1389 | ||
1390 | switch (device_id & 0xffff) { | |
1391 | case 0x0100: | |
1392 | data->flags.crt = 1; | |
1393 | break; | |
1394 | case 0x0400: | |
1395 | data->flags.lcd = 1; | |
1396 | break; | |
1397 | case 0x0200: | |
1398 | data->flags.tvout = 1; | |
1399 | break; | |
1400 | default: | |
1401 | data->flags.unknown = 1; | |
1402 | break; | |
1403 | } | |
1404 | ||
1405 | acpi_video_device_bind(video, data); | |
1406 | acpi_video_device_find_cap(data); | |
1407 | ||
1408 | status = acpi_install_notify_handler(data->handle, | |
1409 | ACPI_DEVICE_NOTIFY, acpi_video_device_notify, data); | |
1410 | if (ACPI_FAILURE(status)) { | |
1411 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1412 | "Error installing notify handler\n")); | |
1413 | result = -ENODEV; | |
1414 | goto end; | |
1415 | } | |
1416 | ||
1417 | down(&video->sem); | |
1418 | list_add_tail(&data->entry, &video->video_device_list); | |
1419 | up(&video->sem); | |
1420 | ||
1421 | acpi_video_device_add_fs(device); | |
1422 | ||
1423 | return_VALUE(0); | |
1424 | } | |
1425 | ||
1426 | end: | |
1427 | return_VALUE(-ENOENT); | |
1428 | } | |
1429 | ||
1430 | /* | |
1431 | * Arg: | |
1432 | * video : video bus device | |
1433 | * | |
1434 | * Return: | |
1435 | * none | |
1436 | * | |
1437 | * Enumerate the video device list of the video bus, | |
1438 | * bind the ids with the corresponding video devices | |
1439 | * under the video bus. | |
1440 | */ | |
1441 | ||
1442 | static void | |
1443 | acpi_video_device_rebind( struct acpi_video_bus *video) | |
1444 | { | |
1445 | struct list_head * node, * next; | |
1446 | list_for_each_safe(node, next, &video->video_device_list) { | |
1447 | struct acpi_video_device * dev = container_of(node, struct acpi_video_device, entry); | |
1448 | acpi_video_device_bind( video, dev); | |
1449 | } | |
1450 | } | |
1451 | ||
1452 | /* | |
1453 | * Arg: | |
1454 | * video : video bus device | |
1455 | * device : video output device under the video | |
1456 | * bus | |
1457 | * | |
1458 | * Return: | |
1459 | * none | |
1460 | * | |
1461 | * Bind the ids with the corresponding video devices | |
1462 | * under the video bus. | |
1463 | */ | |
1464 | ||
1465 | static void | |
1466 | acpi_video_device_bind( struct acpi_video_bus *video, | |
1467 | struct acpi_video_device *device) | |
1468 | { | |
1469 | int i; | |
1470 | ACPI_FUNCTION_TRACE("acpi_video_device_bind"); | |
1471 | ||
1472 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1473 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
1474 | ||
1475 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1476 | i < video->attached_count; i++) { | |
1477 | if (device->device_id == (IDS_VAL(i)& 0xffff)) { | |
1478 | IDS_BIND(i) = device; | |
1479 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1480 | } | |
1481 | } | |
1482 | #undef IDS_VAL | |
1483 | #undef IDS_BIND | |
1484 | } | |
1485 | ||
1486 | /* | |
1487 | * Arg: | |
1488 | * video : video bus device | |
1489 | * | |
1490 | * Return: | |
1491 | * < 0 : error | |
1492 | * | |
1493 | * Call _DOD to enumerate all devices attached to display adapter | |
1494 | * | |
1495 | */ | |
1496 | ||
1497 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1498 | { | |
1499 | int status; | |
1500 | int count; | |
1501 | int i; | |
1502 | struct acpi_video_enumerated_device *active_device_list; | |
1503 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; | |
1504 | union acpi_object *dod = NULL; | |
1505 | union acpi_object *obj; | |
1506 | ||
1507 | ACPI_FUNCTION_TRACE("acpi_video_device_enumerate"); | |
1508 | ||
1509 | status = acpi_evaluate_object(video->handle, "_DOD", NULL, &buffer); | |
1510 | if (!ACPI_SUCCESS(status)) { | |
1511 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _DOD\n")); | |
1512 | return_VALUE(status); | |
1513 | } | |
1514 | ||
1515 | dod = (union acpi_object *) buffer.pointer; | |
1516 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { | |
1517 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _DOD data\n")); | |
1518 | status = -EFAULT; | |
1519 | goto out; | |
1520 | } | |
1521 | ||
1522 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
1523 | dod->package.count)); | |
1524 | ||
1525 | active_device_list= kmalloc( | |
1526 | (1+dod->package.count)*sizeof(struct acpi_video_enumerated_device), | |
1527 | GFP_KERNEL); | |
1528 | ||
1529 | if (!active_device_list) { | |
1530 | status = -ENOMEM; | |
1531 | goto out; | |
1532 | } | |
1533 | ||
1534 | count = 0; | |
1535 | for (i = 0; i < dod->package.count; i++) { | |
1536 | obj = (union acpi_object *) &dod->package.elements[i]; | |
1537 | ||
1538 | if (obj->type != ACPI_TYPE_INTEGER) { | |
1539 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _DOD data\n")); | |
1540 | active_device_list[i].value.int_val = ACPI_VIDEO_HEAD_INVALID; | |
1541 | } | |
1542 | active_device_list[i].value.int_val = obj->integer.value; | |
1543 | active_device_list[i].bind_info = NULL; | |
1544 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, (int) obj->integer.value)); | |
1545 | count++; | |
1546 | } | |
1547 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1548 | ||
1549 | if(video->attached_array) | |
1550 | kfree(video->attached_array); | |
1551 | ||
1552 | video->attached_array = active_device_list; | |
1553 | video->attached_count = count; | |
1554 | out: | |
1555 | acpi_os_free(buffer.pointer); | |
1556 | return_VALUE(status); | |
1557 | } | |
1558 | ||
1559 | /* | |
1560 | * Arg: | |
1561 | * video : video bus device | |
1562 | * event : Nontify Event | |
1563 | * | |
1564 | * Return: | |
1565 | * < 0 : error | |
1566 | * | |
1567 | * 1. Find out the current active output device. | |
1568 | * 2. Identify the next output device to switch | |
1569 | * 3. call _DSS to do actual switch. | |
1570 | */ | |
1571 | ||
1572 | static int | |
1573 | acpi_video_switch_output( | |
1574 | struct acpi_video_bus *video, | |
1575 | int event) | |
1576 | { | |
1577 | struct list_head * node, * next; | |
1578 | struct acpi_video_device *dev=NULL; | |
1579 | struct acpi_video_device *dev_next=NULL; | |
1580 | struct acpi_video_device *dev_prev=NULL; | |
1581 | unsigned long state; | |
1582 | int status = 0; | |
1583 | ||
1584 | ACPI_FUNCTION_TRACE("acpi_video_switch_output"); | |
1585 | ||
1586 | list_for_each_safe(node, next, &video->video_device_list) { | |
7334571f | 1587 | dev = container_of(node, struct acpi_video_device, entry); |
1da177e4 LT |
1588 | status = acpi_video_device_get_state(dev, &state); |
1589 | if (state & 0x2){ | |
1590 | dev_next = container_of(node->next, struct acpi_video_device, entry); | |
1591 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); | |
1592 | goto out; | |
1593 | } | |
1594 | } | |
1595 | dev_next = container_of(node->next, struct acpi_video_device, entry); | |
1596 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); | |
1597 | out: | |
1598 | switch (event) { | |
1599 | case ACPI_VIDEO_NOTIFY_CYCLE: | |
1600 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: | |
1601 | acpi_video_device_set_state(dev, 0); | |
1602 | acpi_video_device_set_state(dev_next, 0x80000001); | |
1603 | break; | |
1604 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: | |
1605 | acpi_video_device_set_state(dev, 0); | |
1606 | acpi_video_device_set_state(dev_prev, 0x80000001); | |
1607 | default: | |
1608 | break; | |
1609 | } | |
1610 | ||
1611 | return_VALUE(status); | |
1612 | } | |
1613 | ||
1614 | static int | |
1615 | acpi_video_get_next_level( | |
1616 | struct acpi_video_device *device, | |
1617 | u32 level_current, | |
1618 | u32 event) | |
1619 | { | |
1620 | /*Fix me*/ | |
1621 | return level_current; | |
1622 | } | |
1623 | ||
1624 | ||
1625 | static void | |
1626 | acpi_video_switch_brightness ( | |
1627 | struct acpi_video_device *device, | |
1628 | int event) | |
1629 | { | |
1630 | unsigned long level_current, level_next; | |
1631 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1632 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1633 | acpi_video_device_lcd_set_level(device, level_next); | |
1634 | } | |
1635 | ||
1636 | static int | |
1637 | acpi_video_bus_get_devices ( | |
1638 | struct acpi_video_bus *video, | |
1639 | struct acpi_device *device) | |
1640 | { | |
1641 | int status = 0; | |
1642 | struct list_head *node, *next; | |
1643 | ||
1644 | ACPI_FUNCTION_TRACE("acpi_video_get_devices"); | |
1645 | ||
1646 | acpi_video_device_enumerate(video); | |
1647 | ||
1648 | list_for_each_safe(node, next, &device->children) { | |
1649 | struct acpi_device *dev = list_entry(node, struct acpi_device, node); | |
1650 | ||
1651 | if (!dev) | |
1652 | continue; | |
1653 | ||
1654 | status = acpi_video_bus_get_one_device(dev, video); | |
1655 | if (ACPI_FAILURE(status)) { | |
1656 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Cant attach device\n")); | |
1657 | continue; | |
1658 | } | |
1659 | ||
1660 | } | |
1661 | return_VALUE(status); | |
1662 | } | |
1663 | ||
1664 | static int | |
1665 | acpi_video_bus_put_one_device( | |
1666 | struct acpi_video_device *device) | |
1667 | { | |
031ec77b | 1668 | acpi_status status; |
1da177e4 LT |
1669 | struct acpi_video_bus *video; |
1670 | ||
1671 | ACPI_FUNCTION_TRACE("acpi_video_bus_put_one_device"); | |
1672 | ||
1673 | if (!device || !device->video) | |
1674 | return_VALUE(-ENOENT); | |
1675 | ||
1676 | video = device->video; | |
1677 | ||
1678 | down(&video->sem); | |
1679 | list_del(&device->entry); | |
1680 | up(&video->sem); | |
1681 | acpi_video_device_remove_fs(device->dev); | |
1682 | ||
031ec77b KK |
1683 | status = acpi_remove_notify_handler(device->handle, |
1684 | ACPI_DEVICE_NOTIFY, acpi_video_device_notify); | |
1685 | if (ACPI_FAILURE(status)) | |
1686 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1687 | "Error removing notify handler\n")); | |
1688 | ||
1da177e4 LT |
1689 | return_VALUE(0); |
1690 | } | |
1691 | ||
1692 | static int | |
1693 | acpi_video_bus_put_devices ( | |
1694 | struct acpi_video_bus *video) | |
1695 | { | |
1696 | int status; | |
1697 | struct list_head *node, *next; | |
1698 | ||
1699 | ACPI_FUNCTION_TRACE("acpi_video_bus_put_devices"); | |
1700 | ||
1701 | list_for_each_safe(node, next, &video->video_device_list) { | |
1702 | struct acpi_video_device *data = list_entry(node, struct acpi_video_device, entry); | |
1703 | if (!data) | |
1704 | continue; | |
1705 | ||
1706 | status = acpi_video_bus_put_one_device(data); | |
1707 | if(ACPI_FAILURE(status)) | |
1708 | printk(KERN_WARNING PREFIX "hhuuhhuu bug in acpi video driver.\n"); | |
1709 | ||
1710 | if (data->brightness) | |
1711 | kfree(data->brightness); | |
1712 | ||
1713 | kfree(data); | |
1714 | } | |
1715 | ||
1716 | return_VALUE(0); | |
1717 | } | |
1718 | ||
1719 | /* acpi_video interface */ | |
1720 | ||
1721 | static int | |
1722 | acpi_video_bus_start_devices( | |
1723 | struct acpi_video_bus *video) | |
1724 | { | |
1725 | return acpi_video_bus_DOS(video, 1, 0); | |
1726 | } | |
1727 | ||
1728 | static int | |
1729 | acpi_video_bus_stop_devices( | |
1730 | struct acpi_video_bus *video) | |
1731 | { | |
1732 | return acpi_video_bus_DOS(video, 0, 1); | |
1733 | } | |
1734 | ||
1735 | static void | |
1736 | acpi_video_bus_notify ( | |
1737 | acpi_handle handle, | |
1738 | u32 event, | |
1739 | void *data) | |
1740 | { | |
1741 | struct acpi_video_bus *video = (struct acpi_video_bus *) data; | |
1742 | struct acpi_device *device = NULL; | |
1743 | ||
1744 | ACPI_FUNCTION_TRACE("acpi_video_bus_notify"); | |
1745 | printk("video bus notify\n"); | |
1746 | ||
1747 | if (!video) | |
1748 | return_VOID; | |
1749 | ||
1750 | if (acpi_bus_get_device(handle, &device)) | |
1751 | return_VOID; | |
1752 | ||
1753 | switch (event) { | |
1754 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User request that a switch occur, | |
1755 | * most likely via hotkey. */ | |
1756 | acpi_bus_generate_event(device, event, 0); | |
1757 | break; | |
1758 | ||
1759 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plug or remove a video | |
1760 | * connector. */ | |
1761 | acpi_video_device_enumerate(video); | |
1762 | acpi_video_device_rebind(video); | |
1763 | acpi_video_switch_output(video, event); | |
1764 | acpi_bus_generate_event(device, event, 0); | |
1765 | break; | |
1766 | ||
1767 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed.*/ | |
1768 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ | |
1769 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ | |
1770 | acpi_video_switch_output(video, event); | |
1771 | acpi_bus_generate_event(device, event, 0); | |
1772 | break; | |
1773 | ||
1774 | default: | |
1775 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
1776 | "Unsupported event [0x%x]\n", event)); | |
1777 | break; | |
1778 | } | |
1779 | ||
1780 | return_VOID; | |
1781 | } | |
1782 | ||
1783 | static void | |
1784 | acpi_video_device_notify ( | |
1785 | acpi_handle handle, | |
1786 | u32 event, | |
1787 | void *data) | |
1788 | { | |
1789 | struct acpi_video_device *video_device = (struct acpi_video_device *) data; | |
1790 | struct acpi_device *device = NULL; | |
1791 | ||
1792 | ACPI_FUNCTION_TRACE("acpi_video_device_notify"); | |
1793 | ||
1794 | printk("video device notify\n"); | |
1795 | if (!video_device) | |
1796 | return_VOID; | |
1797 | ||
1798 | if (acpi_bus_get_device(handle, &device)) | |
1799 | return_VOID; | |
1800 | ||
1801 | switch (event) { | |
1802 | case ACPI_VIDEO_NOTIFY_SWITCH: /* change in status (cycle output device) */ | |
1803 | case ACPI_VIDEO_NOTIFY_PROBE: /* change in status (output device status) */ | |
1804 | acpi_bus_generate_event(device, event, 0); | |
1805 | break; | |
1806 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ | |
1807 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ | |
1808 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ | |
1809 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ | |
1810 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ | |
1811 | acpi_video_switch_brightness (video_device, event); | |
1812 | acpi_bus_generate_event(device, event, 0); | |
1813 | break; | |
1814 | default: | |
1815 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
1816 | "Unsupported event [0x%x]\n", event)); | |
1817 | break; | |
1818 | } | |
1819 | return_VOID; | |
1820 | } | |
1821 | ||
1822 | static int | |
1823 | acpi_video_bus_add ( | |
1824 | struct acpi_device *device) | |
1825 | { | |
1826 | int result = 0; | |
1827 | acpi_status status = 0; | |
1828 | struct acpi_video_bus *video = NULL; | |
1829 | ||
1830 | ACPI_FUNCTION_TRACE("acpi_video_bus_add"); | |
1831 | ||
1832 | if (!device) | |
1833 | return_VALUE(-EINVAL); | |
1834 | ||
1835 | video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); | |
1836 | if (!video) | |
1837 | return_VALUE(-ENOMEM); | |
1838 | memset(video, 0, sizeof(struct acpi_video_bus)); | |
1839 | ||
1840 | video->handle = device->handle; | |
1841 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); | |
1842 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1843 | acpi_driver_data(device) = video; | |
1844 | ||
1845 | acpi_video_bus_find_cap(video); | |
1846 | result = acpi_video_bus_check(video); | |
1847 | if (result) | |
1848 | goto end; | |
1849 | ||
1850 | result = acpi_video_bus_add_fs(device); | |
1851 | if (result) | |
1852 | goto end; | |
1853 | ||
1854 | init_MUTEX(&video->sem); | |
1855 | INIT_LIST_HEAD(&video->video_device_list); | |
1856 | ||
1857 | acpi_video_bus_get_devices(video, device); | |
1858 | acpi_video_bus_start_devices(video); | |
1859 | ||
1860 | status = acpi_install_notify_handler(video->handle, | |
1861 | ACPI_DEVICE_NOTIFY, acpi_video_bus_notify, video); | |
1862 | if (ACPI_FAILURE(status)) { | |
1863 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1864 | "Error installing notify handler\n")); | |
1865 | result = -ENODEV; | |
1866 | goto end; | |
1867 | } | |
1868 | ||
1869 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", | |
1870 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), | |
1871 | video->flags.multihead ? "yes":"no", | |
1872 | video->flags.rom ? "yes":"no", | |
1873 | video->flags.post ? "yes":"no"); | |
1874 | ||
1875 | end: | |
1876 | if (result) { | |
1877 | acpi_video_bus_remove_fs(device); | |
1878 | kfree(video); | |
1879 | } | |
1880 | ||
1881 | return_VALUE(result); | |
1882 | } | |
1883 | ||
1884 | static int | |
1885 | acpi_video_bus_remove ( | |
1886 | struct acpi_device *device, | |
1887 | int type) | |
1888 | { | |
1889 | acpi_status status = 0; | |
1890 | struct acpi_video_bus *video = NULL; | |
1891 | ||
1892 | ACPI_FUNCTION_TRACE("acpi_video_bus_remove"); | |
1893 | ||
1894 | if (!device || !acpi_driver_data(device)) | |
1895 | return_VALUE(-EINVAL); | |
1896 | ||
1897 | video = (struct acpi_video_bus *) acpi_driver_data(device); | |
1898 | ||
1899 | acpi_video_bus_stop_devices(video); | |
1900 | ||
1901 | status = acpi_remove_notify_handler(video->handle, | |
1902 | ACPI_DEVICE_NOTIFY, acpi_video_bus_notify); | |
1903 | if (ACPI_FAILURE(status)) | |
1904 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1905 | "Error removing notify handler\n")); | |
1906 | ||
1907 | acpi_video_bus_put_devices(video); | |
1908 | acpi_video_bus_remove_fs(device); | |
1909 | ||
1910 | if (video->attached_array) | |
1911 | kfree(video->attached_array); | |
1912 | kfree(video); | |
1913 | ||
1914 | return_VALUE(0); | |
1915 | } | |
1916 | ||
1917 | ||
1918 | static int | |
1919 | acpi_video_bus_match ( | |
1920 | struct acpi_device *device, | |
1921 | struct acpi_driver *driver) | |
1922 | { | |
1923 | acpi_handle h_dummy1; | |
1924 | acpi_handle h_dummy2; | |
1925 | acpi_handle h_dummy3; | |
1926 | ||
1927 | ACPI_FUNCTION_TRACE("acpi_video_bus_match"); | |
1928 | ||
1929 | if (!device || !driver) | |
1930 | return_VALUE(-EINVAL); | |
1931 | ||
1932 | /* Since there is no HID, CID for ACPI Video drivers, we have | |
1933 | * to check well known required nodes for each feature we support. | |
1934 | */ | |
1935 | ||
1936 | /* Does this device able to support video switching ? */ | |
1937 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) && | |
1938 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2))) | |
1939 | return_VALUE(0); | |
1940 | ||
1941 | /* Does this device able to retrieve a video ROM ? */ | |
1942 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1))) | |
1943 | return_VALUE(0); | |
1944 | ||
1945 | /* Does this device able to configure which video head to be POSTed ? */ | |
1946 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) && | |
1947 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) && | |
1948 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3))) | |
1949 | return_VALUE(0); | |
1950 | ||
1951 | ||
1952 | return_VALUE(-ENODEV); | |
1953 | } | |
1954 | ||
1955 | ||
1956 | static int __init | |
1957 | acpi_video_init (void) | |
1958 | { | |
1959 | int result = 0; | |
1960 | ||
1961 | ACPI_FUNCTION_TRACE("acpi_video_init"); | |
1962 | ||
1963 | /* | |
1964 | acpi_dbg_level = 0xFFFFFFFF; | |
1965 | acpi_dbg_layer = 0x08000000; | |
1966 | */ | |
1967 | ||
1968 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1969 | if (!acpi_video_dir) | |
1970 | return_VALUE(-ENODEV); | |
1971 | acpi_video_dir->owner = THIS_MODULE; | |
1972 | ||
1973 | result = acpi_bus_register_driver(&acpi_video_bus); | |
1974 | if (result < 0) { | |
1975 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1976 | return_VALUE(-ENODEV); | |
1977 | } | |
1978 | ||
1979 | return_VALUE(0); | |
1980 | } | |
1981 | ||
1982 | static void __exit | |
1983 | acpi_video_exit (void) | |
1984 | { | |
1985 | ACPI_FUNCTION_TRACE("acpi_video_exit"); | |
1986 | ||
1987 | acpi_bus_unregister_driver(&acpi_video_bus); | |
1988 | ||
1989 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1990 | ||
1991 | return_VOID; | |
1992 | } | |
1993 | ||
1994 | module_init(acpi_video_init); | |
1995 | module_exit(acpi_video_exit); |