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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 | * Copyright (C) 2006 Thomas Tuttle <linux-kernel@ttuttle.net> | |
7 | * | |
8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or (at | |
13 | * your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
23 | * | |
24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
25 | */ | |
26 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/types.h> | |
31 | #include <linux/list.h> | |
32 | #include <linux/mutex.h> | |
33 | #include <linux/proc_fs.h> | |
34 | #include <linux/seq_file.h> | |
35 | #include <linux/input.h> | |
36 | #include <linux/backlight.h> | |
37 | #include <linux/thermal.h> | |
38 | #include <linux/video_output.h> | |
39 | #include <asm/uaccess.h> | |
40 | ||
41 | #include <acpi/acpi_bus.h> | |
42 | #include <acpi/acpi_drivers.h> | |
43 | ||
44 | #define ACPI_VIDEO_COMPONENT 0x08000000 | |
45 | #define ACPI_VIDEO_CLASS "video" | |
46 | #define ACPI_VIDEO_BUS_NAME "Video Bus" | |
47 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" | |
48 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 | |
49 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 | |
50 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 | |
51 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 | |
52 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 | |
53 | ||
54 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85 | |
55 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 | |
56 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 | |
57 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88 | |
58 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89 | |
59 | ||
60 | #define ACPI_VIDEO_HEAD_INVALID (~0u - 1) | |
61 | #define ACPI_VIDEO_HEAD_END (~0u) | |
62 | #define MAX_NAME_LEN 20 | |
63 | ||
64 | #define ACPI_VIDEO_DISPLAY_CRT 1 | |
65 | #define ACPI_VIDEO_DISPLAY_TV 2 | |
66 | #define ACPI_VIDEO_DISPLAY_DVI 3 | |
67 | #define ACPI_VIDEO_DISPLAY_LCD 4 | |
68 | ||
69 | #define _COMPONENT ACPI_VIDEO_COMPONENT | |
70 | ACPI_MODULE_NAME("video"); | |
71 | ||
72 | MODULE_AUTHOR("Bruno Ducrot"); | |
73 | MODULE_DESCRIPTION("ACPI Video Driver"); | |
74 | MODULE_LICENSE("GPL"); | |
75 | ||
76 | static int brightness_switch_enabled = 1; | |
77 | module_param(brightness_switch_enabled, bool, 0644); | |
78 | ||
79 | static int acpi_video_bus_add(struct acpi_device *device); | |
80 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
81 | static int acpi_video_resume(struct acpi_device *device); | |
82 | ||
83 | static const struct acpi_device_id video_device_ids[] = { | |
84 | {ACPI_VIDEO_HID, 0}, | |
85 | {"", 0}, | |
86 | }; | |
87 | MODULE_DEVICE_TABLE(acpi, video_device_ids); | |
88 | ||
89 | static struct acpi_driver acpi_video_bus = { | |
90 | .name = "video", | |
91 | .class = ACPI_VIDEO_CLASS, | |
92 | .ids = video_device_ids, | |
93 | .ops = { | |
94 | .add = acpi_video_bus_add, | |
95 | .remove = acpi_video_bus_remove, | |
96 | .resume = acpi_video_resume, | |
97 | }, | |
98 | }; | |
99 | ||
100 | struct acpi_video_bus_flags { | |
101 | u8 multihead:1; /* can switch video heads */ | |
102 | u8 rom:1; /* can retrieve a video rom */ | |
103 | u8 post:1; /* can configure the head to */ | |
104 | u8 reserved:5; | |
105 | }; | |
106 | ||
107 | struct acpi_video_bus_cap { | |
108 | u8 _DOS:1; /*Enable/Disable output switching */ | |
109 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
110 | u8 _ROM:1; /*Get ROM Data */ | |
111 | u8 _GPD:1; /*Get POST Device */ | |
112 | u8 _SPD:1; /*Set POST Device */ | |
113 | u8 _VPO:1; /*Video POST Options */ | |
114 | u8 reserved:2; | |
115 | }; | |
116 | ||
117 | struct acpi_video_device_attrib { | |
118 | u32 display_index:4; /* A zero-based instance of the Display */ | |
119 | u32 display_port_attachment:4; /*This field differentiates the display type */ | |
120 | u32 display_type:4; /*Describe the specific type in use */ | |
121 | u32 vendor_specific:4; /*Chipset Vendor Specific */ | |
122 | u32 bios_can_detect:1; /*BIOS can detect the device */ | |
123 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
124 | the VGA device. */ | |
125 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
126 | u32 reserved:10; /*Must be 0 */ | |
127 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
128 | }; | |
129 | ||
130 | struct acpi_video_enumerated_device { | |
131 | union { | |
132 | u32 int_val; | |
133 | struct acpi_video_device_attrib attrib; | |
134 | } value; | |
135 | struct acpi_video_device *bind_info; | |
136 | }; | |
137 | ||
138 | struct acpi_video_bus { | |
139 | struct acpi_device *device; | |
140 | u8 dos_setting; | |
141 | struct acpi_video_enumerated_device *attached_array; | |
142 | u8 attached_count; | |
143 | struct acpi_video_bus_cap cap; | |
144 | struct acpi_video_bus_flags flags; | |
145 | struct list_head video_device_list; | |
146 | struct mutex device_list_lock; /* protects video_device_list */ | |
147 | struct proc_dir_entry *dir; | |
148 | struct input_dev *input; | |
149 | char phys[32]; /* for input device */ | |
150 | }; | |
151 | ||
152 | struct acpi_video_device_flags { | |
153 | u8 crt:1; | |
154 | u8 lcd:1; | |
155 | u8 tvout:1; | |
156 | u8 dvi:1; | |
157 | u8 bios:1; | |
158 | u8 unknown:1; | |
159 | u8 reserved:2; | |
160 | }; | |
161 | ||
162 | struct acpi_video_device_cap { | |
163 | u8 _ADR:1; /*Return the unique ID */ | |
164 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
165 | u8 _BCM:1; /*Set the brightness level */ | |
166 | u8 _BQC:1; /* Get current brightness level */ | |
167 | u8 _DDC:1; /*Return the EDID for this device */ | |
168 | u8 _DCS:1; /*Return status of output device */ | |
169 | u8 _DGS:1; /*Query graphics state */ | |
170 | u8 _DSS:1; /*Device state set */ | |
171 | }; | |
172 | ||
173 | struct acpi_video_device_brightness { | |
174 | int curr; | |
175 | int count; | |
176 | int *levels; | |
177 | }; | |
178 | ||
179 | struct acpi_video_device { | |
180 | unsigned long device_id; | |
181 | struct acpi_video_device_flags flags; | |
182 | struct acpi_video_device_cap cap; | |
183 | struct list_head entry; | |
184 | struct acpi_video_bus *video; | |
185 | struct acpi_device *dev; | |
186 | struct acpi_video_device_brightness *brightness; | |
187 | struct backlight_device *backlight; | |
188 | struct thermal_cooling_device *cdev; | |
189 | struct output_device *output_dev; | |
190 | }; | |
191 | ||
192 | /* bus */ | |
193 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
194 | static struct file_operations acpi_video_bus_info_fops = { | |
195 | .open = acpi_video_bus_info_open_fs, | |
196 | .read = seq_read, | |
197 | .llseek = seq_lseek, | |
198 | .release = single_release, | |
199 | }; | |
200 | ||
201 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
202 | static struct file_operations acpi_video_bus_ROM_fops = { | |
203 | .open = acpi_video_bus_ROM_open_fs, | |
204 | .read = seq_read, | |
205 | .llseek = seq_lseek, | |
206 | .release = single_release, | |
207 | }; | |
208 | ||
209 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, | |
210 | struct file *file); | |
211 | static struct file_operations acpi_video_bus_POST_info_fops = { | |
212 | .open = acpi_video_bus_POST_info_open_fs, | |
213 | .read = seq_read, | |
214 | .llseek = seq_lseek, | |
215 | .release = single_release, | |
216 | }; | |
217 | ||
218 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
219 | static struct file_operations acpi_video_bus_POST_fops = { | |
220 | .open = acpi_video_bus_POST_open_fs, | |
221 | .read = seq_read, | |
222 | .llseek = seq_lseek, | |
223 | .release = single_release, | |
224 | }; | |
225 | ||
226 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); | |
227 | static struct file_operations acpi_video_bus_DOS_fops = { | |
228 | .open = acpi_video_bus_DOS_open_fs, | |
229 | .read = seq_read, | |
230 | .llseek = seq_lseek, | |
231 | .release = single_release, | |
232 | }; | |
233 | ||
234 | /* device */ | |
235 | static int acpi_video_device_info_open_fs(struct inode *inode, | |
236 | struct file *file); | |
237 | static struct file_operations acpi_video_device_info_fops = { | |
238 | .open = acpi_video_device_info_open_fs, | |
239 | .read = seq_read, | |
240 | .llseek = seq_lseek, | |
241 | .release = single_release, | |
242 | }; | |
243 | ||
244 | static int acpi_video_device_state_open_fs(struct inode *inode, | |
245 | struct file *file); | |
246 | static struct file_operations acpi_video_device_state_fops = { | |
247 | .open = acpi_video_device_state_open_fs, | |
248 | .read = seq_read, | |
249 | .llseek = seq_lseek, | |
250 | .release = single_release, | |
251 | }; | |
252 | ||
253 | static int acpi_video_device_brightness_open_fs(struct inode *inode, | |
254 | struct file *file); | |
255 | static struct file_operations acpi_video_device_brightness_fops = { | |
256 | .open = acpi_video_device_brightness_open_fs, | |
257 | .read = seq_read, | |
258 | .llseek = seq_lseek, | |
259 | .release = single_release, | |
260 | }; | |
261 | ||
262 | static int acpi_video_device_EDID_open_fs(struct inode *inode, | |
263 | struct file *file); | |
264 | static struct file_operations acpi_video_device_EDID_fops = { | |
265 | .open = acpi_video_device_EDID_open_fs, | |
266 | .read = seq_read, | |
267 | .llseek = seq_lseek, | |
268 | .release = single_release, | |
269 | }; | |
270 | ||
271 | static char device_decode[][30] = { | |
272 | "motherboard VGA device", | |
273 | "PCI VGA device", | |
274 | "AGP VGA device", | |
275 | "UNKNOWN", | |
276 | }; | |
277 | ||
278 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); | |
279 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
280 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
281 | struct acpi_video_device *device); | |
282 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); | |
283 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, | |
284 | int level); | |
285 | static int acpi_video_device_lcd_get_level_current( | |
286 | struct acpi_video_device *device, | |
287 | unsigned long *level); | |
288 | static int acpi_video_get_next_level(struct acpi_video_device *device, | |
289 | u32 level_current, u32 event); | |
290 | static void acpi_video_switch_brightness(struct acpi_video_device *device, | |
291 | int event); | |
292 | static int acpi_video_device_get_state(struct acpi_video_device *device, | |
293 | unsigned long *state); | |
294 | static int acpi_video_output_get(struct output_device *od); | |
295 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
296 | ||
297 | /*backlight device sysfs support*/ | |
298 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
299 | { | |
300 | unsigned long cur_level; | |
301 | int i; | |
302 | struct acpi_video_device *vd = | |
303 | (struct acpi_video_device *)bl_get_data(bd); | |
304 | acpi_video_device_lcd_get_level_current(vd, &cur_level); | |
305 | for (i = 2; i < vd->brightness->count; i++) { | |
306 | if (vd->brightness->levels[i] == cur_level) | |
307 | /* The first two entries are special - see page 575 | |
308 | of the ACPI spec 3.0 */ | |
309 | return i-2; | |
310 | } | |
311 | return 0; | |
312 | } | |
313 | ||
314 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
315 | { | |
316 | int request_level = bd->props.brightness+2; | |
317 | struct acpi_video_device *vd = | |
318 | (struct acpi_video_device *)bl_get_data(bd); | |
319 | acpi_video_device_lcd_set_level(vd, | |
320 | vd->brightness->levels[request_level]); | |
321 | return 0; | |
322 | } | |
323 | ||
324 | static struct backlight_ops acpi_backlight_ops = { | |
325 | .get_brightness = acpi_video_get_brightness, | |
326 | .update_status = acpi_video_set_brightness, | |
327 | }; | |
328 | ||
329 | /*video output device sysfs support*/ | |
330 | static int acpi_video_output_get(struct output_device *od) | |
331 | { | |
332 | unsigned long state; | |
333 | struct acpi_video_device *vd = | |
334 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); | |
335 | acpi_video_device_get_state(vd, &state); | |
336 | return (int)state; | |
337 | } | |
338 | ||
339 | static int acpi_video_output_set(struct output_device *od) | |
340 | { | |
341 | unsigned long state = od->request_state; | |
342 | struct acpi_video_device *vd= | |
343 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); | |
344 | return acpi_video_device_set_state(vd, state); | |
345 | } | |
346 | ||
347 | static struct output_properties acpi_output_properties = { | |
348 | .set_state = acpi_video_output_set, | |
349 | .get_status = acpi_video_output_get, | |
350 | }; | |
351 | ||
352 | ||
353 | /* thermal cooling device callbacks */ | |
354 | static int video_get_max_state(struct thermal_cooling_device *cdev, char *buf) | |
355 | { | |
356 | struct acpi_device *device = cdev->devdata; | |
357 | struct acpi_video_device *video = acpi_driver_data(device); | |
358 | ||
359 | return sprintf(buf, "%d\n", video->brightness->count - 3); | |
360 | } | |
361 | ||
362 | static int video_get_cur_state(struct thermal_cooling_device *cdev, char *buf) | |
363 | { | |
364 | struct acpi_device *device = cdev->devdata; | |
365 | struct acpi_video_device *video = acpi_driver_data(device); | |
366 | unsigned long level; | |
367 | int state; | |
368 | ||
369 | acpi_video_device_lcd_get_level_current(video, &level); | |
370 | for (state = 2; state < video->brightness->count; state++) | |
371 | if (level == video->brightness->levels[state]) | |
372 | return sprintf(buf, "%d\n", | |
373 | video->brightness->count - state - 1); | |
374 | ||
375 | return -EINVAL; | |
376 | } | |
377 | ||
378 | static int | |
379 | video_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state) | |
380 | { | |
381 | struct acpi_device *device = cdev->devdata; | |
382 | struct acpi_video_device *video = acpi_driver_data(device); | |
383 | int level; | |
384 | ||
385 | if ( state >= video->brightness->count - 2) | |
386 | return -EINVAL; | |
387 | ||
388 | state = video->brightness->count - state; | |
389 | level = video->brightness->levels[state -1]; | |
390 | return acpi_video_device_lcd_set_level(video, level); | |
391 | } | |
392 | ||
393 | static struct thermal_cooling_device_ops video_cooling_ops = { | |
394 | .get_max_state = video_get_max_state, | |
395 | .get_cur_state = video_get_cur_state, | |
396 | .set_cur_state = video_set_cur_state, | |
397 | }; | |
398 | ||
399 | /* -------------------------------------------------------------------------- | |
400 | Video Management | |
401 | -------------------------------------------------------------------------- */ | |
402 | ||
403 | /* device */ | |
404 | ||
405 | static int | |
406 | acpi_video_device_query(struct acpi_video_device *device, unsigned long *state) | |
407 | { | |
408 | int status; | |
409 | ||
410 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
411 | ||
412 | return status; | |
413 | } | |
414 | ||
415 | static int | |
416 | acpi_video_device_get_state(struct acpi_video_device *device, | |
417 | unsigned long *state) | |
418 | { | |
419 | int status; | |
420 | ||
421 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); | |
422 | ||
423 | return status; | |
424 | } | |
425 | ||
426 | static int | |
427 | acpi_video_device_set_state(struct acpi_video_device *device, int state) | |
428 | { | |
429 | int status; | |
430 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
431 | struct acpi_object_list args = { 1, &arg0 }; | |
432 | unsigned long ret; | |
433 | ||
434 | ||
435 | arg0.integer.value = state; | |
436 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); | |
437 | ||
438 | return status; | |
439 | } | |
440 | ||
441 | static int | |
442 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, | |
443 | union acpi_object **levels) | |
444 | { | |
445 | int status; | |
446 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
447 | union acpi_object *obj; | |
448 | ||
449 | ||
450 | *levels = NULL; | |
451 | ||
452 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); | |
453 | if (!ACPI_SUCCESS(status)) | |
454 | return status; | |
455 | obj = (union acpi_object *)buffer.pointer; | |
456 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { | |
457 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); | |
458 | status = -EFAULT; | |
459 | goto err; | |
460 | } | |
461 | ||
462 | *levels = obj; | |
463 | ||
464 | return 0; | |
465 | ||
466 | err: | |
467 | kfree(buffer.pointer); | |
468 | ||
469 | return status; | |
470 | } | |
471 | ||
472 | static int | |
473 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) | |
474 | { | |
475 | int status = AE_OK; | |
476 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
477 | struct acpi_object_list args = { 1, &arg0 }; | |
478 | ||
479 | ||
480 | arg0.integer.value = level; | |
481 | ||
482 | if (device->cap._BCM) | |
483 | status = acpi_evaluate_object(device->dev->handle, "_BCM", | |
484 | &args, NULL); | |
485 | device->brightness->curr = level; | |
486 | return status; | |
487 | } | |
488 | ||
489 | static int | |
490 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, | |
491 | unsigned long *level) | |
492 | { | |
493 | if (device->cap._BQC) | |
494 | return acpi_evaluate_integer(device->dev->handle, "_BQC", NULL, | |
495 | level); | |
496 | *level = device->brightness->curr; | |
497 | return AE_OK; | |
498 | } | |
499 | ||
500 | static int | |
501 | acpi_video_device_EDID(struct acpi_video_device *device, | |
502 | union acpi_object **edid, ssize_t length) | |
503 | { | |
504 | int status; | |
505 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
506 | union acpi_object *obj; | |
507 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
508 | struct acpi_object_list args = { 1, &arg0 }; | |
509 | ||
510 | ||
511 | *edid = NULL; | |
512 | ||
513 | if (!device) | |
514 | return -ENODEV; | |
515 | if (length == 128) | |
516 | arg0.integer.value = 1; | |
517 | else if (length == 256) | |
518 | arg0.integer.value = 2; | |
519 | else | |
520 | return -EINVAL; | |
521 | ||
522 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); | |
523 | if (ACPI_FAILURE(status)) | |
524 | return -ENODEV; | |
525 | ||
526 | obj = buffer.pointer; | |
527 | ||
528 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
529 | *edid = obj; | |
530 | else { | |
531 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); | |
532 | status = -EFAULT; | |
533 | kfree(obj); | |
534 | } | |
535 | ||
536 | return status; | |
537 | } | |
538 | ||
539 | /* bus */ | |
540 | ||
541 | static int | |
542 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) | |
543 | { | |
544 | int status; | |
545 | unsigned long tmp; | |
546 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
547 | struct acpi_object_list args = { 1, &arg0 }; | |
548 | ||
549 | ||
550 | arg0.integer.value = option; | |
551 | ||
552 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); | |
553 | if (ACPI_SUCCESS(status)) | |
554 | status = tmp ? (-EINVAL) : (AE_OK); | |
555 | ||
556 | return status; | |
557 | } | |
558 | ||
559 | static int | |
560 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) | |
561 | { | |
562 | int status; | |
563 | ||
564 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); | |
565 | ||
566 | return status; | |
567 | } | |
568 | ||
569 | static int | |
570 | acpi_video_bus_POST_options(struct acpi_video_bus *video, | |
571 | unsigned long *options) | |
572 | { | |
573 | int status; | |
574 | ||
575 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); | |
576 | *options &= 3; | |
577 | ||
578 | return status; | |
579 | } | |
580 | ||
581 | /* | |
582 | * Arg: | |
583 | * video : video bus device pointer | |
584 | * bios_flag : | |
585 | * 0. The system BIOS should NOT automatically switch(toggle) | |
586 | * the active display output. | |
587 | * 1. The system BIOS should automatically switch (toggle) the | |
588 | * active display output. No switch event. | |
589 | * 2. The _DGS value should be locked. | |
590 | * 3. The system BIOS should not automatically switch (toggle) the | |
591 | * active display output, but instead generate the display switch | |
592 | * event notify code. | |
593 | * lcd_flag : | |
594 | * 0. The system BIOS should automatically control the brightness level | |
595 | * of the LCD when the power changes from AC to DC | |
596 | * 1. The system BIOS should NOT automatically control the brightness | |
597 | * level of the LCD when the power changes from AC to DC. | |
598 | * Return Value: | |
599 | * -1 wrong arg. | |
600 | */ | |
601 | ||
602 | static int | |
603 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) | |
604 | { | |
605 | acpi_integer status = 0; | |
606 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
607 | struct acpi_object_list args = { 1, &arg0 }; | |
608 | ||
609 | ||
610 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { | |
611 | status = -1; | |
612 | goto Failed; | |
613 | } | |
614 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
615 | video->dos_setting = arg0.integer.value; | |
616 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); | |
617 | ||
618 | Failed: | |
619 | return status; | |
620 | } | |
621 | ||
622 | /* | |
623 | * Arg: | |
624 | * device : video output device (LCD, CRT, ..) | |
625 | * | |
626 | * Return Value: | |
627 | * None | |
628 | * | |
629 | * Find out all required AML methods defined under the output | |
630 | * device. | |
631 | */ | |
632 | ||
633 | static void acpi_video_device_find_cap(struct acpi_video_device *device) | |
634 | { | |
635 | acpi_handle h_dummy1; | |
636 | int i; | |
637 | u32 max_level = 0; | |
638 | union acpi_object *obj = NULL; | |
639 | struct acpi_video_device_brightness *br = NULL; | |
640 | ||
641 | ||
642 | memset(&device->cap, 0, sizeof(device->cap)); | |
643 | ||
644 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { | |
645 | device->cap._ADR = 1; | |
646 | } | |
647 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { | |
648 | device->cap._BCL = 1; | |
649 | } | |
650 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { | |
651 | device->cap._BCM = 1; | |
652 | } | |
653 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) | |
654 | device->cap._BQC = 1; | |
655 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { | |
656 | device->cap._DDC = 1; | |
657 | } | |
658 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { | |
659 | device->cap._DCS = 1; | |
660 | } | |
661 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { | |
662 | device->cap._DGS = 1; | |
663 | } | |
664 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { | |
665 | device->cap._DSS = 1; | |
666 | } | |
667 | ||
668 | if (ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { | |
669 | ||
670 | if (obj->package.count >= 2) { | |
671 | int count = 0; | |
672 | union acpi_object *o; | |
673 | ||
674 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
675 | if (!br) { | |
676 | printk(KERN_ERR "can't allocate memory\n"); | |
677 | } else { | |
678 | br->levels = kmalloc(obj->package.count * | |
679 | sizeof *(br->levels), GFP_KERNEL); | |
680 | if (!br->levels) | |
681 | goto out; | |
682 | ||
683 | for (i = 0; i < obj->package.count; i++) { | |
684 | o = (union acpi_object *)&obj->package. | |
685 | elements[i]; | |
686 | if (o->type != ACPI_TYPE_INTEGER) { | |
687 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
688 | continue; | |
689 | } | |
690 | br->levels[count] = (u32) o->integer.value; | |
691 | ||
692 | if (br->levels[count] > max_level) | |
693 | max_level = br->levels[count]; | |
694 | count++; | |
695 | } | |
696 | out: | |
697 | if (count < 2) { | |
698 | kfree(br->levels); | |
699 | kfree(br); | |
700 | } else { | |
701 | br->count = count; | |
702 | device->brightness = br; | |
703 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
704 | "found %d brightness levels\n", | |
705 | count)); | |
706 | } | |
707 | } | |
708 | } | |
709 | ||
710 | } else { | |
711 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available LCD brightness level\n")); | |
712 | } | |
713 | ||
714 | kfree(obj); | |
715 | ||
716 | if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){ | |
717 | int result; | |
718 | static int count = 0; | |
719 | char *name; | |
720 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
721 | if (!name) | |
722 | return; | |
723 | ||
724 | sprintf(name, "acpi_video%d", count++); | |
725 | device->backlight = backlight_device_register(name, | |
726 | NULL, device, &acpi_backlight_ops); | |
727 | device->backlight->props.max_brightness = device->brightness->count-3; | |
728 | device->backlight->props.brightness = acpi_video_get_brightness(device->backlight); | |
729 | backlight_update_status(device->backlight); | |
730 | kfree(name); | |
731 | ||
732 | device->cdev = thermal_cooling_device_register("LCD", | |
733 | device->dev, &video_cooling_ops); | |
734 | if (IS_ERR(device->cdev)) | |
735 | return; | |
736 | ||
737 | if (device->cdev) { | |
738 | printk(KERN_INFO PREFIX | |
739 | "%s is registered as cooling_device%d\n", | |
740 | device->dev->dev.bus_id, device->cdev->id); | |
741 | result = sysfs_create_link(&device->dev->dev.kobj, | |
742 | &device->cdev->device.kobj, | |
743 | "thermal_cooling"); | |
744 | if (result) | |
745 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
746 | result = sysfs_create_link(&device->cdev->device.kobj, | |
747 | &device->dev->dev.kobj, | |
748 | "device"); | |
749 | if (result) | |
750 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
751 | } | |
752 | } | |
753 | if (device->cap._DCS && device->cap._DSS){ | |
754 | static int count = 0; | |
755 | char *name; | |
756 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
757 | if (!name) | |
758 | return; | |
759 | sprintf(name, "acpi_video%d", count++); | |
760 | device->output_dev = video_output_register(name, | |
761 | NULL, device, &acpi_output_properties); | |
762 | kfree(name); | |
763 | } | |
764 | return; | |
765 | } | |
766 | ||
767 | /* | |
768 | * Arg: | |
769 | * device : video output device (VGA) | |
770 | * | |
771 | * Return Value: | |
772 | * None | |
773 | * | |
774 | * Find out all required AML methods defined under the video bus device. | |
775 | */ | |
776 | ||
777 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) | |
778 | { | |
779 | acpi_handle h_dummy1; | |
780 | ||
781 | memset(&video->cap, 0, sizeof(video->cap)); | |
782 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { | |
783 | video->cap._DOS = 1; | |
784 | } | |
785 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { | |
786 | video->cap._DOD = 1; | |
787 | } | |
788 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { | |
789 | video->cap._ROM = 1; | |
790 | } | |
791 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { | |
792 | video->cap._GPD = 1; | |
793 | } | |
794 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { | |
795 | video->cap._SPD = 1; | |
796 | } | |
797 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { | |
798 | video->cap._VPO = 1; | |
799 | } | |
800 | } | |
801 | ||
802 | /* | |
803 | * Check whether the video bus device has required AML method to | |
804 | * support the desired features | |
805 | */ | |
806 | ||
807 | static int acpi_video_bus_check(struct acpi_video_bus *video) | |
808 | { | |
809 | acpi_status status = -ENOENT; | |
810 | ||
811 | ||
812 | if (!video) | |
813 | return -EINVAL; | |
814 | ||
815 | /* Since there is no HID, CID and so on for VGA driver, we have | |
816 | * to check well known required nodes. | |
817 | */ | |
818 | ||
819 | /* Does this device support video switching? */ | |
820 | if (video->cap._DOS) { | |
821 | video->flags.multihead = 1; | |
822 | status = 0; | |
823 | } | |
824 | ||
825 | /* Does this device support retrieving a video ROM? */ | |
826 | if (video->cap._ROM) { | |
827 | video->flags.rom = 1; | |
828 | status = 0; | |
829 | } | |
830 | ||
831 | /* Does this device support configuring which video device to POST? */ | |
832 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { | |
833 | video->flags.post = 1; | |
834 | status = 0; | |
835 | } | |
836 | ||
837 | return status; | |
838 | } | |
839 | ||
840 | /* -------------------------------------------------------------------------- | |
841 | FS Interface (/proc) | |
842 | -------------------------------------------------------------------------- */ | |
843 | ||
844 | static struct proc_dir_entry *acpi_video_dir; | |
845 | ||
846 | /* video devices */ | |
847 | ||
848 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) | |
849 | { | |
850 | struct acpi_video_device *dev = seq->private; | |
851 | ||
852 | ||
853 | if (!dev) | |
854 | goto end; | |
855 | ||
856 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
857 | seq_printf(seq, "type: "); | |
858 | if (dev->flags.crt) | |
859 | seq_printf(seq, "CRT\n"); | |
860 | else if (dev->flags.lcd) | |
861 | seq_printf(seq, "LCD\n"); | |
862 | else if (dev->flags.tvout) | |
863 | seq_printf(seq, "TVOUT\n"); | |
864 | else if (dev->flags.dvi) | |
865 | seq_printf(seq, "DVI\n"); | |
866 | else | |
867 | seq_printf(seq, "UNKNOWN\n"); | |
868 | ||
869 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); | |
870 | ||
871 | end: | |
872 | return 0; | |
873 | } | |
874 | ||
875 | static int | |
876 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) | |
877 | { | |
878 | return single_open(file, acpi_video_device_info_seq_show, | |
879 | PDE(inode)->data); | |
880 | } | |
881 | ||
882 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) | |
883 | { | |
884 | int status; | |
885 | struct acpi_video_device *dev = seq->private; | |
886 | unsigned long state; | |
887 | ||
888 | ||
889 | if (!dev) | |
890 | goto end; | |
891 | ||
892 | status = acpi_video_device_get_state(dev, &state); | |
893 | seq_printf(seq, "state: "); | |
894 | if (ACPI_SUCCESS(status)) | |
895 | seq_printf(seq, "0x%02lx\n", state); | |
896 | else | |
897 | seq_printf(seq, "<not supported>\n"); | |
898 | ||
899 | status = acpi_video_device_query(dev, &state); | |
900 | seq_printf(seq, "query: "); | |
901 | if (ACPI_SUCCESS(status)) | |
902 | seq_printf(seq, "0x%02lx\n", state); | |
903 | else | |
904 | seq_printf(seq, "<not supported>\n"); | |
905 | ||
906 | end: | |
907 | return 0; | |
908 | } | |
909 | ||
910 | static int | |
911 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) | |
912 | { | |
913 | return single_open(file, acpi_video_device_state_seq_show, | |
914 | PDE(inode)->data); | |
915 | } | |
916 | ||
917 | static ssize_t | |
918 | acpi_video_device_write_state(struct file *file, | |
919 | const char __user * buffer, | |
920 | size_t count, loff_t * data) | |
921 | { | |
922 | int status; | |
923 | struct seq_file *m = file->private_data; | |
924 | struct acpi_video_device *dev = m->private; | |
925 | char str[12] = { 0 }; | |
926 | u32 state = 0; | |
927 | ||
928 | ||
929 | if (!dev || count + 1 > sizeof str) | |
930 | return -EINVAL; | |
931 | ||
932 | if (copy_from_user(str, buffer, count)) | |
933 | return -EFAULT; | |
934 | ||
935 | str[count] = 0; | |
936 | state = simple_strtoul(str, NULL, 0); | |
937 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); | |
938 | ||
939 | status = acpi_video_device_set_state(dev, state); | |
940 | ||
941 | if (status) | |
942 | return -EFAULT; | |
943 | ||
944 | return count; | |
945 | } | |
946 | ||
947 | static int | |
948 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) | |
949 | { | |
950 | struct acpi_video_device *dev = seq->private; | |
951 | int i; | |
952 | ||
953 | ||
954 | if (!dev || !dev->brightness) { | |
955 | seq_printf(seq, "<not supported>\n"); | |
956 | return 0; | |
957 | } | |
958 | ||
959 | seq_printf(seq, "levels: "); | |
960 | for (i = 0; i < dev->brightness->count; i++) | |
961 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
962 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
963 | ||
964 | return 0; | |
965 | } | |
966 | ||
967 | static int | |
968 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) | |
969 | { | |
970 | return single_open(file, acpi_video_device_brightness_seq_show, | |
971 | PDE(inode)->data); | |
972 | } | |
973 | ||
974 | static ssize_t | |
975 | acpi_video_device_write_brightness(struct file *file, | |
976 | const char __user * buffer, | |
977 | size_t count, loff_t * data) | |
978 | { | |
979 | struct seq_file *m = file->private_data; | |
980 | struct acpi_video_device *dev = m->private; | |
981 | char str[5] = { 0 }; | |
982 | unsigned int level = 0; | |
983 | int i; | |
984 | ||
985 | ||
986 | if (!dev || !dev->brightness || count + 1 > sizeof str) | |
987 | return -EINVAL; | |
988 | ||
989 | if (copy_from_user(str, buffer, count)) | |
990 | return -EFAULT; | |
991 | ||
992 | str[count] = 0; | |
993 | level = simple_strtoul(str, NULL, 0); | |
994 | ||
995 | if (level > 100) | |
996 | return -EFAULT; | |
997 | ||
998 | /* validate through the list of available levels */ | |
999 | for (i = 0; i < dev->brightness->count; i++) | |
1000 | if (level == dev->brightness->levels[i]) { | |
1001 | if (ACPI_SUCCESS | |
1002 | (acpi_video_device_lcd_set_level(dev, level))) | |
1003 | dev->brightness->curr = level; | |
1004 | break; | |
1005 | } | |
1006 | ||
1007 | return count; | |
1008 | } | |
1009 | ||
1010 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) | |
1011 | { | |
1012 | struct acpi_video_device *dev = seq->private; | |
1013 | int status; | |
1014 | int i; | |
1015 | union acpi_object *edid = NULL; | |
1016 | ||
1017 | ||
1018 | if (!dev) | |
1019 | goto out; | |
1020 | ||
1021 | status = acpi_video_device_EDID(dev, &edid, 128); | |
1022 | if (ACPI_FAILURE(status)) { | |
1023 | status = acpi_video_device_EDID(dev, &edid, 256); | |
1024 | } | |
1025 | ||
1026 | if (ACPI_FAILURE(status)) { | |
1027 | goto out; | |
1028 | } | |
1029 | ||
1030 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
1031 | for (i = 0; i < edid->buffer.length; i++) | |
1032 | seq_putc(seq, edid->buffer.pointer[i]); | |
1033 | } | |
1034 | ||
1035 | out: | |
1036 | if (!edid) | |
1037 | seq_printf(seq, "<not supported>\n"); | |
1038 | else | |
1039 | kfree(edid); | |
1040 | ||
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | static int | |
1045 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) | |
1046 | { | |
1047 | return single_open(file, acpi_video_device_EDID_seq_show, | |
1048 | PDE(inode)->data); | |
1049 | } | |
1050 | ||
1051 | static int acpi_video_device_add_fs(struct acpi_device *device) | |
1052 | { | |
1053 | struct proc_dir_entry *entry = NULL; | |
1054 | struct acpi_video_device *vid_dev; | |
1055 | ||
1056 | ||
1057 | if (!device) | |
1058 | return -ENODEV; | |
1059 | ||
1060 | vid_dev = acpi_driver_data(device); | |
1061 | if (!vid_dev) | |
1062 | return -ENODEV; | |
1063 | ||
1064 | if (!acpi_device_dir(device)) { | |
1065 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
1066 | vid_dev->video->dir); | |
1067 | if (!acpi_device_dir(device)) | |
1068 | return -ENODEV; | |
1069 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1070 | } | |
1071 | ||
1072 | /* 'info' [R] */ | |
1073 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1074 | if (!entry) | |
1075 | return -ENODEV; | |
1076 | else { | |
1077 | entry->proc_fops = &acpi_video_device_info_fops; | |
1078 | entry->data = acpi_driver_data(device); | |
1079 | entry->owner = THIS_MODULE; | |
1080 | } | |
1081 | ||
1082 | /* 'state' [R/W] */ | |
1083 | entry = | |
1084 | create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR, | |
1085 | acpi_device_dir(device)); | |
1086 | if (!entry) | |
1087 | return -ENODEV; | |
1088 | else { | |
1089 | acpi_video_device_state_fops.write = acpi_video_device_write_state; | |
1090 | entry->proc_fops = &acpi_video_device_state_fops; | |
1091 | entry->data = acpi_driver_data(device); | |
1092 | entry->owner = THIS_MODULE; | |
1093 | } | |
1094 | ||
1095 | /* 'brightness' [R/W] */ | |
1096 | entry = | |
1097 | create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
1098 | acpi_device_dir(device)); | |
1099 | if (!entry) | |
1100 | return -ENODEV; | |
1101 | else { | |
1102 | acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness; | |
1103 | entry->proc_fops = &acpi_video_device_brightness_fops; | |
1104 | entry->data = acpi_driver_data(device); | |
1105 | entry->owner = THIS_MODULE; | |
1106 | } | |
1107 | ||
1108 | /* 'EDID' [R] */ | |
1109 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); | |
1110 | if (!entry) | |
1111 | return -ENODEV; | |
1112 | else { | |
1113 | entry->proc_fops = &acpi_video_device_EDID_fops; | |
1114 | entry->data = acpi_driver_data(device); | |
1115 | entry->owner = THIS_MODULE; | |
1116 | } | |
1117 | ||
1118 | return 0; | |
1119 | } | |
1120 | ||
1121 | static int acpi_video_device_remove_fs(struct acpi_device *device) | |
1122 | { | |
1123 | struct acpi_video_device *vid_dev; | |
1124 | ||
1125 | vid_dev = acpi_driver_data(device); | |
1126 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) | |
1127 | return -ENODEV; | |
1128 | ||
1129 | if (acpi_device_dir(device)) { | |
1130 | remove_proc_entry("info", acpi_device_dir(device)); | |
1131 | remove_proc_entry("state", acpi_device_dir(device)); | |
1132 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
1133 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
1134 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); | |
1135 | acpi_device_dir(device) = NULL; | |
1136 | } | |
1137 | ||
1138 | return 0; | |
1139 | } | |
1140 | ||
1141 | /* video bus */ | |
1142 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) | |
1143 | { | |
1144 | struct acpi_video_bus *video = seq->private; | |
1145 | ||
1146 | ||
1147 | if (!video) | |
1148 | goto end; | |
1149 | ||
1150 | seq_printf(seq, "Switching heads: %s\n", | |
1151 | video->flags.multihead ? "yes" : "no"); | |
1152 | seq_printf(seq, "Video ROM: %s\n", | |
1153 | video->flags.rom ? "yes" : "no"); | |
1154 | seq_printf(seq, "Device to be POSTed on boot: %s\n", | |
1155 | video->flags.post ? "yes" : "no"); | |
1156 | ||
1157 | end: | |
1158 | return 0; | |
1159 | } | |
1160 | ||
1161 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) | |
1162 | { | |
1163 | return single_open(file, acpi_video_bus_info_seq_show, | |
1164 | PDE(inode)->data); | |
1165 | } | |
1166 | ||
1167 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) | |
1168 | { | |
1169 | struct acpi_video_bus *video = seq->private; | |
1170 | ||
1171 | ||
1172 | if (!video) | |
1173 | goto end; | |
1174 | ||
1175 | printk(KERN_INFO PREFIX "Please implement %s\n", __func__); | |
1176 | seq_printf(seq, "<TODO>\n"); | |
1177 | ||
1178 | end: | |
1179 | return 0; | |
1180 | } | |
1181 | ||
1182 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) | |
1183 | { | |
1184 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1185 | } | |
1186 | ||
1187 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) | |
1188 | { | |
1189 | struct acpi_video_bus *video = seq->private; | |
1190 | unsigned long options; | |
1191 | int status; | |
1192 | ||
1193 | ||
1194 | if (!video) | |
1195 | goto end; | |
1196 | ||
1197 | status = acpi_video_bus_POST_options(video, &options); | |
1198 | if (ACPI_SUCCESS(status)) { | |
1199 | if (!(options & 1)) { | |
1200 | printk(KERN_WARNING PREFIX | |
1201 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1202 | printk(KERN_WARNING PREFIX | |
1203 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); | |
1204 | } | |
1205 | printk("%lx\n", options); | |
1206 | seq_printf(seq, "can POST: <integrated video>"); | |
1207 | if (options & 2) | |
1208 | seq_printf(seq, " <PCI video>"); | |
1209 | if (options & 4) | |
1210 | seq_printf(seq, " <AGP video>"); | |
1211 | seq_putc(seq, '\n'); | |
1212 | } else | |
1213 | seq_printf(seq, "<not supported>\n"); | |
1214 | end: | |
1215 | return 0; | |
1216 | } | |
1217 | ||
1218 | static int | |
1219 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) | |
1220 | { | |
1221 | return single_open(file, acpi_video_bus_POST_info_seq_show, | |
1222 | PDE(inode)->data); | |
1223 | } | |
1224 | ||
1225 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) | |
1226 | { | |
1227 | struct acpi_video_bus *video = seq->private; | |
1228 | int status; | |
1229 | unsigned long id; | |
1230 | ||
1231 | ||
1232 | if (!video) | |
1233 | goto end; | |
1234 | ||
1235 | status = acpi_video_bus_get_POST(video, &id); | |
1236 | if (!ACPI_SUCCESS(status)) { | |
1237 | seq_printf(seq, "<not supported>\n"); | |
1238 | goto end; | |
1239 | } | |
1240 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); | |
1241 | ||
1242 | end: | |
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) | |
1247 | { | |
1248 | struct acpi_video_bus *video = seq->private; | |
1249 | ||
1250 | ||
1251 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); | |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) | |
1257 | { | |
1258 | return single_open(file, acpi_video_bus_POST_seq_show, | |
1259 | PDE(inode)->data); | |
1260 | } | |
1261 | ||
1262 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) | |
1263 | { | |
1264 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1265 | } | |
1266 | ||
1267 | static ssize_t | |
1268 | acpi_video_bus_write_POST(struct file *file, | |
1269 | const char __user * buffer, | |
1270 | size_t count, loff_t * data) | |
1271 | { | |
1272 | int status; | |
1273 | struct seq_file *m = file->private_data; | |
1274 | struct acpi_video_bus *video = m->private; | |
1275 | char str[12] = { 0 }; | |
1276 | unsigned long opt, options; | |
1277 | ||
1278 | ||
1279 | if (!video || count + 1 > sizeof str) | |
1280 | return -EINVAL; | |
1281 | ||
1282 | status = acpi_video_bus_POST_options(video, &options); | |
1283 | if (!ACPI_SUCCESS(status)) | |
1284 | return -EINVAL; | |
1285 | ||
1286 | if (copy_from_user(str, buffer, count)) | |
1287 | return -EFAULT; | |
1288 | ||
1289 | str[count] = 0; | |
1290 | opt = strtoul(str, NULL, 0); | |
1291 | if (opt > 3) | |
1292 | return -EFAULT; | |
1293 | ||
1294 | /* just in case an OEM 'forgot' the motherboard... */ | |
1295 | options |= 1; | |
1296 | ||
1297 | if (options & (1ul << opt)) { | |
1298 | status = acpi_video_bus_set_POST(video, opt); | |
1299 | if (!ACPI_SUCCESS(status)) | |
1300 | return -EFAULT; | |
1301 | ||
1302 | } | |
1303 | ||
1304 | return count; | |
1305 | } | |
1306 | ||
1307 | static ssize_t | |
1308 | acpi_video_bus_write_DOS(struct file *file, | |
1309 | const char __user * buffer, | |
1310 | size_t count, loff_t * data) | |
1311 | { | |
1312 | int status; | |
1313 | struct seq_file *m = file->private_data; | |
1314 | struct acpi_video_bus *video = m->private; | |
1315 | char str[12] = { 0 }; | |
1316 | unsigned long opt; | |
1317 | ||
1318 | ||
1319 | if (!video || count + 1 > sizeof str) | |
1320 | return -EINVAL; | |
1321 | ||
1322 | if (copy_from_user(str, buffer, count)) | |
1323 | return -EFAULT; | |
1324 | ||
1325 | str[count] = 0; | |
1326 | opt = strtoul(str, NULL, 0); | |
1327 | if (opt > 7) | |
1328 | return -EFAULT; | |
1329 | ||
1330 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); | |
1331 | ||
1332 | if (!ACPI_SUCCESS(status)) | |
1333 | return -EFAULT; | |
1334 | ||
1335 | return count; | |
1336 | } | |
1337 | ||
1338 | static int acpi_video_bus_add_fs(struct acpi_device *device) | |
1339 | { | |
1340 | struct proc_dir_entry *entry = NULL; | |
1341 | struct acpi_video_bus *video; | |
1342 | ||
1343 | ||
1344 | video = acpi_driver_data(device); | |
1345 | ||
1346 | if (!acpi_device_dir(device)) { | |
1347 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
1348 | acpi_video_dir); | |
1349 | if (!acpi_device_dir(device)) | |
1350 | return -ENODEV; | |
1351 | video->dir = acpi_device_dir(device); | |
1352 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1353 | } | |
1354 | ||
1355 | /* 'info' [R] */ | |
1356 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1357 | if (!entry) | |
1358 | return -ENODEV; | |
1359 | else { | |
1360 | entry->proc_fops = &acpi_video_bus_info_fops; | |
1361 | entry->data = acpi_driver_data(device); | |
1362 | entry->owner = THIS_MODULE; | |
1363 | } | |
1364 | ||
1365 | /* 'ROM' [R] */ | |
1366 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); | |
1367 | if (!entry) | |
1368 | return -ENODEV; | |
1369 | else { | |
1370 | entry->proc_fops = &acpi_video_bus_ROM_fops; | |
1371 | entry->data = acpi_driver_data(device); | |
1372 | entry->owner = THIS_MODULE; | |
1373 | } | |
1374 | ||
1375 | /* 'POST_info' [R] */ | |
1376 | entry = | |
1377 | create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); | |
1378 | if (!entry) | |
1379 | return -ENODEV; | |
1380 | else { | |
1381 | entry->proc_fops = &acpi_video_bus_POST_info_fops; | |
1382 | entry->data = acpi_driver_data(device); | |
1383 | entry->owner = THIS_MODULE; | |
1384 | } | |
1385 | ||
1386 | /* 'POST' [R/W] */ | |
1387 | entry = | |
1388 | create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR, | |
1389 | acpi_device_dir(device)); | |
1390 | if (!entry) | |
1391 | return -ENODEV; | |
1392 | else { | |
1393 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; | |
1394 | entry->proc_fops = &acpi_video_bus_POST_fops; | |
1395 | entry->data = acpi_driver_data(device); | |
1396 | entry->owner = THIS_MODULE; | |
1397 | } | |
1398 | ||
1399 | /* 'DOS' [R/W] */ | |
1400 | entry = | |
1401 | create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR, | |
1402 | acpi_device_dir(device)); | |
1403 | if (!entry) | |
1404 | return -ENODEV; | |
1405 | else { | |
1406 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; | |
1407 | entry->proc_fops = &acpi_video_bus_DOS_fops; | |
1408 | entry->data = acpi_driver_data(device); | |
1409 | entry->owner = THIS_MODULE; | |
1410 | } | |
1411 | ||
1412 | return 0; | |
1413 | } | |
1414 | ||
1415 | static int acpi_video_bus_remove_fs(struct acpi_device *device) | |
1416 | { | |
1417 | struct acpi_video_bus *video; | |
1418 | ||
1419 | ||
1420 | video = acpi_driver_data(device); | |
1421 | ||
1422 | if (acpi_device_dir(device)) { | |
1423 | remove_proc_entry("info", acpi_device_dir(device)); | |
1424 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1425 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1426 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1427 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
1428 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); | |
1429 | acpi_device_dir(device) = NULL; | |
1430 | } | |
1431 | ||
1432 | return 0; | |
1433 | } | |
1434 | ||
1435 | /* -------------------------------------------------------------------------- | |
1436 | Driver Interface | |
1437 | -------------------------------------------------------------------------- */ | |
1438 | ||
1439 | /* device interface */ | |
1440 | static struct acpi_video_device_attrib* | |
1441 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1442 | { | |
1443 | int count; | |
1444 | ||
1445 | for(count = 0; count < video->attached_count; count++) | |
1446 | if((video->attached_array[count].value.int_val & 0xffff) == device_id) | |
1447 | return &(video->attached_array[count].value.attrib); | |
1448 | return NULL; | |
1449 | } | |
1450 | ||
1451 | static int | |
1452 | acpi_video_bus_get_one_device(struct acpi_device *device, | |
1453 | struct acpi_video_bus *video) | |
1454 | { | |
1455 | unsigned long device_id; | |
1456 | int status; | |
1457 | struct acpi_video_device *data; | |
1458 | struct acpi_video_device_attrib* attribute; | |
1459 | ||
1460 | if (!device || !video) | |
1461 | return -EINVAL; | |
1462 | ||
1463 | status = | |
1464 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1465 | if (ACPI_SUCCESS(status)) { | |
1466 | ||
1467 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); | |
1468 | if (!data) | |
1469 | return -ENOMEM; | |
1470 | ||
1471 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); | |
1472 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1473 | acpi_driver_data(device) = data; | |
1474 | ||
1475 | data->device_id = device_id; | |
1476 | data->video = video; | |
1477 | data->dev = device; | |
1478 | ||
1479 | attribute = acpi_video_get_device_attr(video, device_id); | |
1480 | ||
1481 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1482 | switch (attribute->display_type) { | |
1483 | case ACPI_VIDEO_DISPLAY_CRT: | |
1484 | data->flags.crt = 1; | |
1485 | break; | |
1486 | case ACPI_VIDEO_DISPLAY_TV: | |
1487 | data->flags.tvout = 1; | |
1488 | break; | |
1489 | case ACPI_VIDEO_DISPLAY_DVI: | |
1490 | data->flags.dvi = 1; | |
1491 | break; | |
1492 | case ACPI_VIDEO_DISPLAY_LCD: | |
1493 | data->flags.lcd = 1; | |
1494 | break; | |
1495 | default: | |
1496 | data->flags.unknown = 1; | |
1497 | break; | |
1498 | } | |
1499 | if(attribute->bios_can_detect) | |
1500 | data->flags.bios = 1; | |
1501 | } else | |
1502 | data->flags.unknown = 1; | |
1503 | ||
1504 | acpi_video_device_bind(video, data); | |
1505 | acpi_video_device_find_cap(data); | |
1506 | ||
1507 | status = acpi_install_notify_handler(device->handle, | |
1508 | ACPI_DEVICE_NOTIFY, | |
1509 | acpi_video_device_notify, | |
1510 | data); | |
1511 | if (ACPI_FAILURE(status)) { | |
1512 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1513 | "Error installing notify handler\n")); | |
1514 | if(data->brightness) | |
1515 | kfree(data->brightness->levels); | |
1516 | kfree(data->brightness); | |
1517 | kfree(data); | |
1518 | return -ENODEV; | |
1519 | } | |
1520 | ||
1521 | mutex_lock(&video->device_list_lock); | |
1522 | list_add_tail(&data->entry, &video->video_device_list); | |
1523 | mutex_unlock(&video->device_list_lock); | |
1524 | ||
1525 | acpi_video_device_add_fs(device); | |
1526 | ||
1527 | return 0; | |
1528 | } | |
1529 | ||
1530 | return -ENOENT; | |
1531 | } | |
1532 | ||
1533 | /* | |
1534 | * Arg: | |
1535 | * video : video bus device | |
1536 | * | |
1537 | * Return: | |
1538 | * none | |
1539 | * | |
1540 | * Enumerate the video device list of the video bus, | |
1541 | * bind the ids with the corresponding video devices | |
1542 | * under the video bus. | |
1543 | */ | |
1544 | ||
1545 | static void acpi_video_device_rebind(struct acpi_video_bus *video) | |
1546 | { | |
1547 | struct acpi_video_device *dev; | |
1548 | ||
1549 | mutex_lock(&video->device_list_lock); | |
1550 | ||
1551 | list_for_each_entry(dev, &video->video_device_list, entry) | |
1552 | acpi_video_device_bind(video, dev); | |
1553 | ||
1554 | mutex_unlock(&video->device_list_lock); | |
1555 | } | |
1556 | ||
1557 | /* | |
1558 | * Arg: | |
1559 | * video : video bus device | |
1560 | * device : video output device under the video | |
1561 | * bus | |
1562 | * | |
1563 | * Return: | |
1564 | * none | |
1565 | * | |
1566 | * Bind the ids with the corresponding video devices | |
1567 | * under the video bus. | |
1568 | */ | |
1569 | ||
1570 | static void | |
1571 | acpi_video_device_bind(struct acpi_video_bus *video, | |
1572 | struct acpi_video_device *device) | |
1573 | { | |
1574 | int i; | |
1575 | ||
1576 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1577 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
1578 | ||
1579 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1580 | i < video->attached_count; i++) { | |
1581 | if (device->device_id == (IDS_VAL(i) & 0xffff)) { | |
1582 | IDS_BIND(i) = device; | |
1583 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1584 | } | |
1585 | } | |
1586 | #undef IDS_VAL | |
1587 | #undef IDS_BIND | |
1588 | } | |
1589 | ||
1590 | /* | |
1591 | * Arg: | |
1592 | * video : video bus device | |
1593 | * | |
1594 | * Return: | |
1595 | * < 0 : error | |
1596 | * | |
1597 | * Call _DOD to enumerate all devices attached to display adapter | |
1598 | * | |
1599 | */ | |
1600 | ||
1601 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1602 | { | |
1603 | int status; | |
1604 | int count; | |
1605 | int i; | |
1606 | struct acpi_video_enumerated_device *active_device_list; | |
1607 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
1608 | union acpi_object *dod = NULL; | |
1609 | union acpi_object *obj; | |
1610 | ||
1611 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); | |
1612 | if (!ACPI_SUCCESS(status)) { | |
1613 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); | |
1614 | return status; | |
1615 | } | |
1616 | ||
1617 | dod = buffer.pointer; | |
1618 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { | |
1619 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); | |
1620 | status = -EFAULT; | |
1621 | goto out; | |
1622 | } | |
1623 | ||
1624 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
1625 | dod->package.count)); | |
1626 | ||
1627 | active_device_list = kmalloc((1 + | |
1628 | dod->package.count) * | |
1629 | sizeof(struct | |
1630 | acpi_video_enumerated_device), | |
1631 | GFP_KERNEL); | |
1632 | ||
1633 | if (!active_device_list) { | |
1634 | status = -ENOMEM; | |
1635 | goto out; | |
1636 | } | |
1637 | ||
1638 | count = 0; | |
1639 | for (i = 0; i < dod->package.count; i++) { | |
1640 | obj = &dod->package.elements[i]; | |
1641 | ||
1642 | if (obj->type != ACPI_TYPE_INTEGER) { | |
1643 | printk(KERN_ERR PREFIX "Invalid _DOD data\n"); | |
1644 | active_device_list[i].value.int_val = | |
1645 | ACPI_VIDEO_HEAD_INVALID; | |
1646 | } | |
1647 | active_device_list[i].value.int_val = obj->integer.value; | |
1648 | active_device_list[i].bind_info = NULL; | |
1649 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, | |
1650 | (int)obj->integer.value)); | |
1651 | count++; | |
1652 | } | |
1653 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1654 | ||
1655 | kfree(video->attached_array); | |
1656 | ||
1657 | video->attached_array = active_device_list; | |
1658 | video->attached_count = count; | |
1659 | out: | |
1660 | kfree(buffer.pointer); | |
1661 | return status; | |
1662 | } | |
1663 | ||
1664 | static int | |
1665 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1666 | u32 level_current, u32 event) | |
1667 | { | |
1668 | int min, max, min_above, max_below, i, l, delta = 255; | |
1669 | max = max_below = 0; | |
1670 | min = min_above = 255; | |
1671 | /* Find closest level to level_current */ | |
1672 | for (i = 0; i < device->brightness->count; i++) { | |
1673 | l = device->brightness->levels[i]; | |
1674 | if (abs(l - level_current) < abs(delta)) { | |
1675 | delta = l - level_current; | |
1676 | if (!delta) | |
1677 | break; | |
1678 | } | |
1679 | } | |
1680 | /* Ajust level_current to closest available level */ | |
1681 | level_current += delta; | |
1682 | for (i = 0; i < device->brightness->count; i++) { | |
1683 | l = device->brightness->levels[i]; | |
1684 | if (l < min) | |
1685 | min = l; | |
1686 | if (l > max) | |
1687 | max = l; | |
1688 | if (l < min_above && l > level_current) | |
1689 | min_above = l; | |
1690 | if (l > max_below && l < level_current) | |
1691 | max_below = l; | |
1692 | } | |
1693 | ||
1694 | switch (event) { | |
1695 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1696 | return (level_current < max) ? min_above : min; | |
1697 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1698 | return (level_current < max) ? min_above : max; | |
1699 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1700 | return (level_current > min) ? max_below : min; | |
1701 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1702 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1703 | return 0; | |
1704 | default: | |
1705 | return level_current; | |
1706 | } | |
1707 | } | |
1708 | ||
1709 | static void | |
1710 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) | |
1711 | { | |
1712 | unsigned long level_current, level_next; | |
1713 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1714 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1715 | acpi_video_device_lcd_set_level(device, level_next); | |
1716 | } | |
1717 | ||
1718 | static int | |
1719 | acpi_video_bus_get_devices(struct acpi_video_bus *video, | |
1720 | struct acpi_device *device) | |
1721 | { | |
1722 | int status = 0; | |
1723 | struct acpi_device *dev; | |
1724 | ||
1725 | acpi_video_device_enumerate(video); | |
1726 | ||
1727 | list_for_each_entry(dev, &device->children, node) { | |
1728 | ||
1729 | status = acpi_video_bus_get_one_device(dev, video); | |
1730 | if (ACPI_FAILURE(status)) { | |
1731 | ACPI_EXCEPTION((AE_INFO, status, "Cant attach device")); | |
1732 | continue; | |
1733 | } | |
1734 | } | |
1735 | return status; | |
1736 | } | |
1737 | ||
1738 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) | |
1739 | { | |
1740 | acpi_status status; | |
1741 | struct acpi_video_bus *video; | |
1742 | ||
1743 | ||
1744 | if (!device || !device->video) | |
1745 | return -ENOENT; | |
1746 | ||
1747 | video = device->video; | |
1748 | ||
1749 | acpi_video_device_remove_fs(device->dev); | |
1750 | ||
1751 | status = acpi_remove_notify_handler(device->dev->handle, | |
1752 | ACPI_DEVICE_NOTIFY, | |
1753 | acpi_video_device_notify); | |
1754 | backlight_device_unregister(device->backlight); | |
1755 | if (device->cdev) { | |
1756 | sysfs_remove_link(&device->dev->dev.kobj, | |
1757 | "thermal_cooling"); | |
1758 | sysfs_remove_link(&device->cdev->device.kobj, | |
1759 | "device"); | |
1760 | thermal_cooling_device_unregister(device->cdev); | |
1761 | device->cdev = NULL; | |
1762 | } | |
1763 | video_output_unregister(device->output_dev); | |
1764 | ||
1765 | return 0; | |
1766 | } | |
1767 | ||
1768 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) | |
1769 | { | |
1770 | int status; | |
1771 | struct acpi_video_device *dev, *next; | |
1772 | ||
1773 | mutex_lock(&video->device_list_lock); | |
1774 | ||
1775 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { | |
1776 | ||
1777 | status = acpi_video_bus_put_one_device(dev); | |
1778 | if (ACPI_FAILURE(status)) | |
1779 | printk(KERN_WARNING PREFIX | |
1780 | "hhuuhhuu bug in acpi video driver.\n"); | |
1781 | ||
1782 | if (dev->brightness) { | |
1783 | kfree(dev->brightness->levels); | |
1784 | kfree(dev->brightness); | |
1785 | } | |
1786 | list_del(&dev->entry); | |
1787 | kfree(dev); | |
1788 | } | |
1789 | ||
1790 | mutex_unlock(&video->device_list_lock); | |
1791 | ||
1792 | return 0; | |
1793 | } | |
1794 | ||
1795 | /* acpi_video interface */ | |
1796 | ||
1797 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) | |
1798 | { | |
1799 | return acpi_video_bus_DOS(video, 0, 0); | |
1800 | } | |
1801 | ||
1802 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) | |
1803 | { | |
1804 | return acpi_video_bus_DOS(video, 0, 1); | |
1805 | } | |
1806 | ||
1807 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) | |
1808 | { | |
1809 | struct acpi_video_bus *video = data; | |
1810 | struct acpi_device *device = NULL; | |
1811 | struct input_dev *input; | |
1812 | int keycode; | |
1813 | ||
1814 | if (!video) | |
1815 | return; | |
1816 | ||
1817 | device = video->device; | |
1818 | input = video->input; | |
1819 | ||
1820 | switch (event) { | |
1821 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, | |
1822 | * most likely via hotkey. */ | |
1823 | acpi_bus_generate_proc_event(device, event, 0); | |
1824 | keycode = KEY_SWITCHVIDEOMODE; | |
1825 | break; | |
1826 | ||
1827 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video | |
1828 | * connector. */ | |
1829 | acpi_video_device_enumerate(video); | |
1830 | acpi_video_device_rebind(video); | |
1831 | acpi_bus_generate_proc_event(device, event, 0); | |
1832 | keycode = KEY_SWITCHVIDEOMODE; | |
1833 | break; | |
1834 | ||
1835 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ | |
1836 | acpi_bus_generate_proc_event(device, event, 0); | |
1837 | keycode = KEY_SWITCHVIDEOMODE; | |
1838 | break; | |
1839 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ | |
1840 | acpi_bus_generate_proc_event(device, event, 0); | |
1841 | keycode = KEY_VIDEO_NEXT; | |
1842 | break; | |
1843 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ | |
1844 | acpi_bus_generate_proc_event(device, event, 0); | |
1845 | keycode = KEY_VIDEO_PREV; | |
1846 | break; | |
1847 | ||
1848 | default: | |
1849 | keycode = KEY_UNKNOWN; | |
1850 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
1851 | "Unsupported event [0x%x]\n", event)); | |
1852 | break; | |
1853 | } | |
1854 | ||
1855 | acpi_notifier_call_chain(device, event, 0); | |
1856 | input_report_key(input, keycode, 1); | |
1857 | input_sync(input); | |
1858 | input_report_key(input, keycode, 0); | |
1859 | input_sync(input); | |
1860 | ||
1861 | return; | |
1862 | } | |
1863 | ||
1864 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) | |
1865 | { | |
1866 | struct acpi_video_device *video_device = data; | |
1867 | struct acpi_device *device = NULL; | |
1868 | struct acpi_video_bus *bus; | |
1869 | struct input_dev *input; | |
1870 | int keycode; | |
1871 | ||
1872 | if (!video_device) | |
1873 | return; | |
1874 | ||
1875 | device = video_device->dev; | |
1876 | bus = video_device->video; | |
1877 | input = bus->input; | |
1878 | ||
1879 | switch (event) { | |
1880 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ | |
1881 | if (brightness_switch_enabled) | |
1882 | acpi_video_switch_brightness(video_device, event); | |
1883 | acpi_bus_generate_proc_event(device, event, 0); | |
1884 | keycode = KEY_BRIGHTNESS_CYCLE; | |
1885 | break; | |
1886 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ | |
1887 | if (brightness_switch_enabled) | |
1888 | acpi_video_switch_brightness(video_device, event); | |
1889 | acpi_bus_generate_proc_event(device, event, 0); | |
1890 | keycode = KEY_BRIGHTNESSUP; | |
1891 | break; | |
1892 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ | |
1893 | if (brightness_switch_enabled) | |
1894 | acpi_video_switch_brightness(video_device, event); | |
1895 | acpi_bus_generate_proc_event(device, event, 0); | |
1896 | keycode = KEY_BRIGHTNESSDOWN; | |
1897 | break; | |
1898 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ | |
1899 | if (brightness_switch_enabled) | |
1900 | acpi_video_switch_brightness(video_device, event); | |
1901 | acpi_bus_generate_proc_event(device, event, 0); | |
1902 | keycode = KEY_BRIGHTNESS_ZERO; | |
1903 | break; | |
1904 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ | |
1905 | if (brightness_switch_enabled) | |
1906 | acpi_video_switch_brightness(video_device, event); | |
1907 | acpi_bus_generate_proc_event(device, event, 0); | |
1908 | keycode = KEY_DISPLAY_OFF; | |
1909 | break; | |
1910 | default: | |
1911 | keycode = KEY_UNKNOWN; | |
1912 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
1913 | "Unsupported event [0x%x]\n", event)); | |
1914 | break; | |
1915 | } | |
1916 | ||
1917 | acpi_notifier_call_chain(device, event, 0); | |
1918 | input_report_key(input, keycode, 1); | |
1919 | input_sync(input); | |
1920 | input_report_key(input, keycode, 0); | |
1921 | input_sync(input); | |
1922 | ||
1923 | return; | |
1924 | } | |
1925 | ||
1926 | static int instance; | |
1927 | static int acpi_video_resume(struct acpi_device *device) | |
1928 | { | |
1929 | struct acpi_video_bus *video; | |
1930 | struct acpi_video_device *video_device; | |
1931 | int i; | |
1932 | ||
1933 | if (!device || !acpi_driver_data(device)) | |
1934 | return -EINVAL; | |
1935 | ||
1936 | video = acpi_driver_data(device); | |
1937 | ||
1938 | for (i = 0; i < video->attached_count; i++) { | |
1939 | video_device = video->attached_array[i].bind_info; | |
1940 | if (video_device && video_device->backlight) | |
1941 | acpi_video_set_brightness(video_device->backlight); | |
1942 | } | |
1943 | return AE_OK; | |
1944 | } | |
1945 | ||
1946 | static int acpi_video_bus_add(struct acpi_device *device) | |
1947 | { | |
1948 | acpi_status status; | |
1949 | struct acpi_video_bus *video; | |
1950 | struct input_dev *input; | |
1951 | int error; | |
1952 | ||
1953 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); | |
1954 | if (!video) | |
1955 | return -ENOMEM; | |
1956 | ||
1957 | /* a hack to fix the duplicate name "VID" problem on T61 */ | |
1958 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
1959 | if (instance) | |
1960 | device->pnp.bus_id[3] = '0' + instance; | |
1961 | instance ++; | |
1962 | } | |
1963 | ||
1964 | video->device = device; | |
1965 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); | |
1966 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1967 | acpi_driver_data(device) = video; | |
1968 | ||
1969 | acpi_video_bus_find_cap(video); | |
1970 | error = acpi_video_bus_check(video); | |
1971 | if (error) | |
1972 | goto err_free_video; | |
1973 | ||
1974 | error = acpi_video_bus_add_fs(device); | |
1975 | if (error) | |
1976 | goto err_free_video; | |
1977 | ||
1978 | mutex_init(&video->device_list_lock); | |
1979 | INIT_LIST_HEAD(&video->video_device_list); | |
1980 | ||
1981 | acpi_video_bus_get_devices(video, device); | |
1982 | acpi_video_bus_start_devices(video); | |
1983 | ||
1984 | status = acpi_install_notify_handler(device->handle, | |
1985 | ACPI_DEVICE_NOTIFY, | |
1986 | acpi_video_bus_notify, video); | |
1987 | if (ACPI_FAILURE(status)) { | |
1988 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
1989 | "Error installing notify handler\n")); | |
1990 | error = -ENODEV; | |
1991 | goto err_stop_video; | |
1992 | } | |
1993 | ||
1994 | video->input = input = input_allocate_device(); | |
1995 | if (!input) { | |
1996 | error = -ENOMEM; | |
1997 | goto err_uninstall_notify; | |
1998 | } | |
1999 | ||
2000 | snprintf(video->phys, sizeof(video->phys), | |
2001 | "%s/video/input0", acpi_device_hid(video->device)); | |
2002 | ||
2003 | input->name = acpi_device_name(video->device); | |
2004 | input->phys = video->phys; | |
2005 | input->id.bustype = BUS_HOST; | |
2006 | input->id.product = 0x06; | |
2007 | input->dev.parent = &device->dev; | |
2008 | input->evbit[0] = BIT(EV_KEY); | |
2009 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
2010 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
2011 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
2012 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
2013 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
2014 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
2015 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
2016 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
2017 | set_bit(KEY_UNKNOWN, input->keybit); | |
2018 | ||
2019 | error = input_register_device(input); | |
2020 | if (error) | |
2021 | goto err_free_input_dev; | |
2022 | ||
2023 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", | |
2024 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), | |
2025 | video->flags.multihead ? "yes" : "no", | |
2026 | video->flags.rom ? "yes" : "no", | |
2027 | video->flags.post ? "yes" : "no"); | |
2028 | ||
2029 | return 0; | |
2030 | ||
2031 | err_free_input_dev: | |
2032 | input_free_device(input); | |
2033 | err_uninstall_notify: | |
2034 | acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, | |
2035 | acpi_video_bus_notify); | |
2036 | err_stop_video: | |
2037 | acpi_video_bus_stop_devices(video); | |
2038 | acpi_video_bus_put_devices(video); | |
2039 | kfree(video->attached_array); | |
2040 | acpi_video_bus_remove_fs(device); | |
2041 | err_free_video: | |
2042 | kfree(video); | |
2043 | acpi_driver_data(device) = NULL; | |
2044 | ||
2045 | return error; | |
2046 | } | |
2047 | ||
2048 | static int acpi_video_bus_remove(struct acpi_device *device, int type) | |
2049 | { | |
2050 | acpi_status status = 0; | |
2051 | struct acpi_video_bus *video = NULL; | |
2052 | ||
2053 | ||
2054 | if (!device || !acpi_driver_data(device)) | |
2055 | return -EINVAL; | |
2056 | ||
2057 | video = acpi_driver_data(device); | |
2058 | ||
2059 | acpi_video_bus_stop_devices(video); | |
2060 | ||
2061 | status = acpi_remove_notify_handler(video->device->handle, | |
2062 | ACPI_DEVICE_NOTIFY, | |
2063 | acpi_video_bus_notify); | |
2064 | ||
2065 | acpi_video_bus_put_devices(video); | |
2066 | acpi_video_bus_remove_fs(device); | |
2067 | ||
2068 | input_unregister_device(video->input); | |
2069 | kfree(video->attached_array); | |
2070 | kfree(video); | |
2071 | ||
2072 | return 0; | |
2073 | } | |
2074 | ||
2075 | static int __init acpi_video_init(void) | |
2076 | { | |
2077 | int result = 0; | |
2078 | ||
2079 | ||
2080 | /* | |
2081 | acpi_dbg_level = 0xFFFFFFFF; | |
2082 | acpi_dbg_layer = 0x08000000; | |
2083 | */ | |
2084 | ||
2085 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2086 | if (!acpi_video_dir) | |
2087 | return -ENODEV; | |
2088 | acpi_video_dir->owner = THIS_MODULE; | |
2089 | ||
2090 | result = acpi_bus_register_driver(&acpi_video_bus); | |
2091 | if (result < 0) { | |
2092 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2093 | return -ENODEV; | |
2094 | } | |
2095 | ||
2096 | return 0; | |
2097 | } | |
2098 | ||
2099 | static void __exit acpi_video_exit(void) | |
2100 | { | |
2101 | ||
2102 | acpi_bus_unregister_driver(&acpi_video_bus); | |
2103 | ||
2104 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2105 | ||
2106 | return; | |
2107 | } | |
2108 | ||
2109 | module_init(acpi_video_init); | |
2110 | module_exit(acpi_video_exit); |