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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 | ||
1da177e4 LT |
56 | #define ACPI_VIDEO_HEAD_INVALID (~0u - 1) |
57 | #define ACPI_VIDEO_HEAD_END (~0u) | |
58 | ||
1da177e4 | 59 | #define _COMPONENT ACPI_VIDEO_COMPONENT |
4be44fcd | 60 | ACPI_MODULE_NAME("acpi_video") |
1da177e4 | 61 | |
4be44fcd | 62 | MODULE_AUTHOR("Bruno Ducrot"); |
1da177e4 LT |
63 | MODULE_DESCRIPTION(ACPI_VIDEO_DRIVER_NAME); |
64 | MODULE_LICENSE("GPL"); | |
65 | ||
4be44fcd LB |
66 | static int acpi_video_bus_add(struct acpi_device *device); |
67 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
68 | static int acpi_video_bus_match(struct acpi_device *device, | |
69 | struct acpi_driver *driver); | |
1da177e4 LT |
70 | |
71 | static struct acpi_driver acpi_video_bus = { | |
72 | .name = ACPI_VIDEO_DRIVER_NAME, | |
73 | .class = ACPI_VIDEO_CLASS, | |
74 | .ops = { | |
75 | .add = acpi_video_bus_add, | |
76 | .remove = acpi_video_bus_remove, | |
77 | .match = acpi_video_bus_match, | |
4be44fcd | 78 | }, |
1da177e4 LT |
79 | }; |
80 | ||
81 | struct acpi_video_bus_flags { | |
4be44fcd LB |
82 | u8 multihead:1; /* can switch video heads */ |
83 | u8 rom:1; /* can retrieve a video rom */ | |
84 | u8 post:1; /* can configure the head to */ | |
85 | u8 reserved:5; | |
1da177e4 LT |
86 | }; |
87 | ||
88 | struct acpi_video_bus_cap { | |
4be44fcd LB |
89 | u8 _DOS:1; /*Enable/Disable output switching */ |
90 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
91 | u8 _ROM:1; /*Get ROM Data */ | |
92 | u8 _GPD:1; /*Get POST Device */ | |
93 | u8 _SPD:1; /*Set POST Device */ | |
94 | u8 _VPO:1; /*Video POST Options */ | |
95 | u8 reserved:2; | |
1da177e4 LT |
96 | }; |
97 | ||
4be44fcd LB |
98 | struct acpi_video_device_attrib { |
99 | u32 display_index:4; /* A zero-based instance of the Display */ | |
100 | u32 display_port_attachment:4; /*This field differenates displays type */ | |
101 | u32 display_type:4; /*Describe the specific type in use */ | |
102 | u32 vendor_specific:4; /*Chipset Vendor Specifi */ | |
103 | u32 bios_can_detect:1; /*BIOS can detect the device */ | |
104 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
105 | the VGA device. */ | |
106 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
107 | u32 reserved:10; /*Must be 0 */ | |
108 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
109 | }; |
110 | ||
111 | struct acpi_video_enumerated_device { | |
112 | union { | |
113 | u32 int_val; | |
4be44fcd | 114 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
115 | } value; |
116 | struct acpi_video_device *bind_info; | |
117 | }; | |
118 | ||
119 | struct acpi_video_bus { | |
4be44fcd LB |
120 | acpi_handle handle; |
121 | u8 dos_setting; | |
1da177e4 | 122 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
123 | u8 attached_count; |
124 | struct acpi_video_bus_cap cap; | |
1da177e4 | 125 | struct acpi_video_bus_flags flags; |
4be44fcd LB |
126 | struct semaphore sem; |
127 | struct list_head video_device_list; | |
128 | struct proc_dir_entry *dir; | |
1da177e4 LT |
129 | }; |
130 | ||
131 | struct acpi_video_device_flags { | |
4be44fcd LB |
132 | u8 crt:1; |
133 | u8 lcd:1; | |
134 | u8 tvout:1; | |
135 | u8 bios:1; | |
136 | u8 unknown:1; | |
137 | u8 reserved:3; | |
1da177e4 LT |
138 | }; |
139 | ||
140 | struct acpi_video_device_cap { | |
4be44fcd LB |
141 | u8 _ADR:1; /*Return the unique ID */ |
142 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
143 | u8 _BCM:1; /*Set the brightness level */ | |
144 | u8 _DDC:1; /*Return the EDID for this device */ | |
145 | u8 _DCS:1; /*Return status of output device */ | |
146 | u8 _DGS:1; /*Query graphics state */ | |
147 | u8 _DSS:1; /*Device state set */ | |
148 | u8 _reserved:1; | |
1da177e4 LT |
149 | }; |
150 | ||
151 | struct acpi_video_device_brightness { | |
4be44fcd LB |
152 | int curr; |
153 | int count; | |
154 | int *levels; | |
1da177e4 LT |
155 | }; |
156 | ||
157 | struct acpi_video_device { | |
4be44fcd LB |
158 | acpi_handle handle; |
159 | unsigned long device_id; | |
160 | struct acpi_video_device_flags flags; | |
161 | struct acpi_video_device_cap cap; | |
162 | struct list_head entry; | |
163 | struct acpi_video_bus *video; | |
164 | struct acpi_device *dev; | |
1da177e4 LT |
165 | struct acpi_video_device_brightness *brightness; |
166 | }; | |
167 | ||
1da177e4 LT |
168 | /* bus */ |
169 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
170 | static struct file_operations acpi_video_bus_info_fops = { | |
4be44fcd LB |
171 | .open = acpi_video_bus_info_open_fs, |
172 | .read = seq_read, | |
173 | .llseek = seq_lseek, | |
174 | .release = single_release, | |
1da177e4 LT |
175 | }; |
176 | ||
177 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
178 | static struct file_operations acpi_video_bus_ROM_fops = { | |
4be44fcd LB |
179 | .open = acpi_video_bus_ROM_open_fs, |
180 | .read = seq_read, | |
181 | .llseek = seq_lseek, | |
182 | .release = single_release, | |
1da177e4 LT |
183 | }; |
184 | ||
4be44fcd LB |
185 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
186 | struct file *file); | |
1da177e4 | 187 | static struct file_operations acpi_video_bus_POST_info_fops = { |
4be44fcd LB |
188 | .open = acpi_video_bus_POST_info_open_fs, |
189 | .read = seq_read, | |
190 | .llseek = seq_lseek, | |
191 | .release = single_release, | |
1da177e4 LT |
192 | }; |
193 | ||
194 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
195 | static struct file_operations acpi_video_bus_POST_fops = { | |
4be44fcd LB |
196 | .open = acpi_video_bus_POST_open_fs, |
197 | .read = seq_read, | |
198 | .llseek = seq_lseek, | |
199 | .release = single_release, | |
1da177e4 LT |
200 | }; |
201 | ||
1da177e4 LT |
202 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
203 | static struct file_operations acpi_video_bus_DOS_fops = { | |
4be44fcd LB |
204 | .open = acpi_video_bus_DOS_open_fs, |
205 | .read = seq_read, | |
206 | .llseek = seq_lseek, | |
207 | .release = single_release, | |
1da177e4 LT |
208 | }; |
209 | ||
210 | /* device */ | |
4be44fcd LB |
211 | static int acpi_video_device_info_open_fs(struct inode *inode, |
212 | struct file *file); | |
1da177e4 | 213 | static struct file_operations acpi_video_device_info_fops = { |
4be44fcd LB |
214 | .open = acpi_video_device_info_open_fs, |
215 | .read = seq_read, | |
216 | .llseek = seq_lseek, | |
217 | .release = single_release, | |
1da177e4 LT |
218 | }; |
219 | ||
4be44fcd LB |
220 | static int acpi_video_device_state_open_fs(struct inode *inode, |
221 | struct file *file); | |
1da177e4 | 222 | static struct file_operations acpi_video_device_state_fops = { |
4be44fcd LB |
223 | .open = acpi_video_device_state_open_fs, |
224 | .read = seq_read, | |
225 | .llseek = seq_lseek, | |
226 | .release = single_release, | |
1da177e4 LT |
227 | }; |
228 | ||
4be44fcd LB |
229 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
230 | struct file *file); | |
1da177e4 | 231 | static struct file_operations acpi_video_device_brightness_fops = { |
4be44fcd LB |
232 | .open = acpi_video_device_brightness_open_fs, |
233 | .read = seq_read, | |
234 | .llseek = seq_lseek, | |
235 | .release = single_release, | |
1da177e4 LT |
236 | }; |
237 | ||
4be44fcd LB |
238 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
239 | struct file *file); | |
1da177e4 | 240 | static struct file_operations acpi_video_device_EDID_fops = { |
4be44fcd LB |
241 | .open = acpi_video_device_EDID_open_fs, |
242 | .read = seq_read, | |
243 | .llseek = seq_lseek, | |
244 | .release = single_release, | |
1da177e4 LT |
245 | }; |
246 | ||
4be44fcd | 247 | static char device_decode[][30] = { |
1da177e4 LT |
248 | "motherboard VGA device", |
249 | "PCI VGA device", | |
250 | "AGP VGA device", | |
251 | "UNKNOWN", | |
252 | }; | |
253 | ||
4be44fcd LB |
254 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
255 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
256 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
257 | struct acpi_video_device *device); | |
1da177e4 | 258 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
4be44fcd LB |
259 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event); |
260 | static int acpi_video_get_next_level(struct acpi_video_device *device, | |
261 | u32 level_current, u32 event); | |
262 | static void acpi_video_switch_brightness(struct acpi_video_device *device, | |
263 | int event); | |
1da177e4 LT |
264 | |
265 | /* -------------------------------------------------------------------------- | |
266 | Video Management | |
267 | -------------------------------------------------------------------------- */ | |
268 | ||
269 | /* device */ | |
270 | ||
271 | static int | |
4be44fcd | 272 | acpi_video_device_query(struct acpi_video_device *device, unsigned long *state) |
1da177e4 | 273 | { |
4be44fcd | 274 | int status; |
1da177e4 LT |
275 | ACPI_FUNCTION_TRACE("acpi_video_device_query"); |
276 | status = acpi_evaluate_integer(device->handle, "_DGS", NULL, state); | |
277 | ||
278 | return_VALUE(status); | |
279 | } | |
280 | ||
281 | static int | |
4be44fcd LB |
282 | acpi_video_device_get_state(struct acpi_video_device *device, |
283 | unsigned long *state) | |
1da177e4 | 284 | { |
4be44fcd | 285 | int status; |
1da177e4 LT |
286 | |
287 | ACPI_FUNCTION_TRACE("acpi_video_device_get_state"); | |
288 | ||
289 | status = acpi_evaluate_integer(device->handle, "_DCS", NULL, state); | |
290 | ||
291 | return_VALUE(status); | |
292 | } | |
293 | ||
294 | static int | |
4be44fcd | 295 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 296 | { |
4be44fcd LB |
297 | int status; |
298 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
299 | struct acpi_object_list args = { 1, &arg0 }; | |
824b558b | 300 | unsigned long ret; |
1da177e4 LT |
301 | |
302 | ACPI_FUNCTION_TRACE("acpi_video_device_set_state"); | |
303 | ||
304 | arg0.integer.value = state; | |
824b558b | 305 | status = acpi_evaluate_integer(device->handle, "_DSS", &args, &ret); |
1da177e4 LT |
306 | |
307 | return_VALUE(status); | |
308 | } | |
309 | ||
310 | static int | |
4be44fcd LB |
311 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
312 | union acpi_object **levels) | |
1da177e4 | 313 | { |
4be44fcd LB |
314 | int status; |
315 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
316 | union acpi_object *obj; | |
1da177e4 LT |
317 | |
318 | ACPI_FUNCTION_TRACE("acpi_video_device_lcd_query_levels"); | |
319 | ||
320 | *levels = NULL; | |
321 | ||
322 | status = acpi_evaluate_object(device->handle, "_BCL", NULL, &buffer); | |
323 | if (!ACPI_SUCCESS(status)) | |
324 | return_VALUE(status); | |
4be44fcd | 325 | obj = (union acpi_object *)buffer.pointer; |
1da177e4 LT |
326 | if (!obj && (obj->type != ACPI_TYPE_PACKAGE)) { |
327 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _BCL data\n")); | |
328 | status = -EFAULT; | |
329 | goto err; | |
330 | } | |
331 | ||
332 | *levels = obj; | |
333 | ||
334 | return_VALUE(0); | |
335 | ||
4be44fcd | 336 | err: |
6044ec88 | 337 | kfree(buffer.pointer); |
1da177e4 LT |
338 | |
339 | return_VALUE(status); | |
340 | } | |
341 | ||
342 | static int | |
4be44fcd | 343 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 344 | { |
4be44fcd LB |
345 | int status; |
346 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
347 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 LT |
348 | |
349 | ACPI_FUNCTION_TRACE("acpi_video_device_lcd_set_level"); | |
350 | ||
351 | arg0.integer.value = level; | |
352 | status = acpi_evaluate_object(device->handle, "_BCM", &args, NULL); | |
353 | ||
354 | printk(KERN_DEBUG "set_level status: %x\n", status); | |
355 | return_VALUE(status); | |
356 | } | |
357 | ||
358 | static int | |
4be44fcd LB |
359 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
360 | unsigned long *level) | |
1da177e4 | 361 | { |
4be44fcd | 362 | int status; |
1da177e4 LT |
363 | ACPI_FUNCTION_TRACE("acpi_video_device_lcd_get_level_current"); |
364 | ||
365 | status = acpi_evaluate_integer(device->handle, "_BQC", NULL, level); | |
366 | ||
367 | return_VALUE(status); | |
368 | } | |
369 | ||
370 | static int | |
4be44fcd LB |
371 | acpi_video_device_EDID(struct acpi_video_device *device, |
372 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 373 | { |
4be44fcd LB |
374 | int status; |
375 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
376 | union acpi_object *obj; | |
377 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
378 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 LT |
379 | |
380 | ACPI_FUNCTION_TRACE("acpi_video_device_get_EDID"); | |
381 | ||
382 | *edid = NULL; | |
383 | ||
384 | if (!device) | |
385 | return_VALUE(-ENODEV); | |
386 | if (length == 128) | |
387 | arg0.integer.value = 1; | |
388 | else if (length == 256) | |
389 | arg0.integer.value = 2; | |
390 | else | |
391 | return_VALUE(-EINVAL); | |
392 | ||
393 | status = acpi_evaluate_object(device->handle, "_DDC", &args, &buffer); | |
394 | if (ACPI_FAILURE(status)) | |
395 | return_VALUE(-ENODEV); | |
396 | ||
4be44fcd | 397 | obj = (union acpi_object *)buffer.pointer; |
1da177e4 LT |
398 | |
399 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
400 | *edid = obj; | |
401 | else { | |
402 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _DDC data\n")); | |
403 | status = -EFAULT; | |
404 | kfree(obj); | |
405 | } | |
406 | ||
407 | return_VALUE(status); | |
408 | } | |
409 | ||
1da177e4 LT |
410 | /* bus */ |
411 | ||
412 | static int | |
4be44fcd | 413 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 414 | { |
4be44fcd LB |
415 | int status; |
416 | unsigned long tmp; | |
417 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
418 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 LT |
419 | |
420 | ACPI_FUNCTION_TRACE("acpi_video_bus_set_POST"); | |
421 | ||
422 | arg0.integer.value = option; | |
423 | ||
424 | status = acpi_evaluate_integer(video->handle, "_SPD", &args, &tmp); | |
425 | if (ACPI_SUCCESS(status)) | |
4be44fcd | 426 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 LT |
427 | |
428 | return_VALUE(status); | |
429 | } | |
430 | ||
431 | static int | |
4be44fcd | 432 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) |
1da177e4 LT |
433 | { |
434 | int status; | |
435 | ||
436 | ACPI_FUNCTION_TRACE("acpi_video_bus_get_POST"); | |
437 | ||
438 | status = acpi_evaluate_integer(video->handle, "_GPD", NULL, id); | |
439 | ||
440 | return_VALUE(status); | |
441 | } | |
442 | ||
443 | static int | |
4be44fcd LB |
444 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
445 | unsigned long *options) | |
1da177e4 | 446 | { |
4be44fcd | 447 | int status; |
1da177e4 LT |
448 | ACPI_FUNCTION_TRACE("acpi_video_bus_POST_options"); |
449 | ||
450 | status = acpi_evaluate_integer(video->handle, "_VPO", NULL, options); | |
451 | *options &= 3; | |
452 | ||
453 | return_VALUE(status); | |
454 | } | |
455 | ||
456 | /* | |
457 | * Arg: | |
458 | * video : video bus device pointer | |
459 | * bios_flag : | |
460 | * 0. The system BIOS should NOT automatically switch(toggle) | |
461 | * the active display output. | |
462 | * 1. The system BIOS should automatically switch (toggle) the | |
463 | * active display output. No swich event. | |
464 | * 2. The _DGS value should be locked. | |
465 | * 3. The system BIOS should not automatically switch (toggle) the | |
466 | * active display output, but instead generate the display switch | |
467 | * event notify code. | |
468 | * lcd_flag : | |
469 | * 0. The system BIOS should automatically control the brightness level | |
470 | * of the LCD, when the power changes from AC to DC | |
471 | * 1. The system BIOS should NOT automatically control the brightness | |
472 | * level of the LCD, when the power changes from AC to DC. | |
473 | * Return Value: | |
474 | * -1 wrong arg. | |
475 | */ | |
476 | ||
477 | static int | |
4be44fcd | 478 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 479 | { |
4be44fcd LB |
480 | acpi_integer status = 0; |
481 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
482 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 LT |
483 | |
484 | ACPI_FUNCTION_TRACE("acpi_video_bus_DOS"); | |
485 | ||
4be44fcd | 486 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
487 | status = -1; |
488 | goto Failed; | |
489 | } | |
490 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
491 | video->dos_setting = arg0.integer.value; | |
492 | acpi_evaluate_object(video->handle, "_DOS", &args, NULL); | |
493 | ||
4be44fcd | 494 | Failed: |
1da177e4 LT |
495 | return_VALUE(status); |
496 | } | |
497 | ||
498 | /* | |
499 | * Arg: | |
500 | * device : video output device (LCD, CRT, ..) | |
501 | * | |
502 | * Return Value: | |
503 | * None | |
504 | * | |
505 | * Find out all required AML method defined under the output | |
506 | * device. | |
507 | */ | |
508 | ||
4be44fcd | 509 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 510 | { |
4be44fcd | 511 | acpi_integer status; |
1da177e4 LT |
512 | acpi_handle h_dummy1; |
513 | int i; | |
514 | union acpi_object *obj = NULL; | |
515 | struct acpi_video_device_brightness *br = NULL; | |
516 | ||
517 | ACPI_FUNCTION_TRACE("acpi_video_device_find_cap"); | |
518 | ||
4be44fcd | 519 | memset(&device->cap, 0, 4); |
1da177e4 | 520 | |
4be44fcd | 521 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
522 | device->cap._ADR = 1; |
523 | } | |
4be44fcd LB |
524 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_BCL", &h_dummy1))) { |
525 | device->cap._BCL = 1; | |
1da177e4 | 526 | } |
4be44fcd LB |
527 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_BCM", &h_dummy1))) { |
528 | device->cap._BCM = 1; | |
1da177e4 | 529 | } |
4be44fcd LB |
530 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DDC", &h_dummy1))) { |
531 | device->cap._DDC = 1; | |
1da177e4 | 532 | } |
4be44fcd | 533 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
534 | device->cap._DCS = 1; |
535 | } | |
4be44fcd | 536 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
537 | device->cap._DGS = 1; |
538 | } | |
4be44fcd | 539 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
540 | device->cap._DSS = 1; |
541 | } | |
542 | ||
543 | status = acpi_video_device_lcd_query_levels(device, &obj); | |
544 | ||
545 | if (obj && obj->type == ACPI_TYPE_PACKAGE && obj->package.count >= 2) { | |
546 | int count = 0; | |
547 | union acpi_object *o; | |
4be44fcd | 548 | |
d1dd0c23 | 549 | br = kmalloc(sizeof(*br), GFP_KERNEL); |
1da177e4 LT |
550 | if (!br) { |
551 | printk(KERN_ERR "can't allocate memory\n"); | |
552 | } else { | |
d1dd0c23 PM |
553 | memset(br, 0, sizeof(*br)); |
554 | br->levels = kmalloc(obj->package.count * | |
4be44fcd | 555 | sizeof *(br->levels), GFP_KERNEL); |
1da177e4 LT |
556 | if (!br->levels) |
557 | goto out; | |
558 | ||
559 | for (i = 0; i < obj->package.count; i++) { | |
4be44fcd LB |
560 | o = (union acpi_object *)&obj->package. |
561 | elements[i]; | |
1da177e4 | 562 | if (o->type != ACPI_TYPE_INTEGER) { |
4be44fcd LB |
563 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
564 | "Invalid data\n")); | |
1da177e4 LT |
565 | continue; |
566 | } | |
567 | br->levels[count] = (u32) o->integer.value; | |
568 | count++; | |
569 | } | |
4be44fcd | 570 | out: |
1da177e4 | 571 | if (count < 2) { |
d1dd0c23 | 572 | kfree(br->levels); |
1da177e4 LT |
573 | kfree(br); |
574 | } else { | |
575 | br->count = count; | |
576 | device->brightness = br; | |
4be44fcd LB |
577 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
578 | "found %d brightness levels\n", | |
579 | count)); | |
1da177e4 LT |
580 | } |
581 | } | |
582 | } | |
583 | ||
d1dd0c23 | 584 | kfree(obj); |
1da177e4 LT |
585 | |
586 | return_VOID; | |
587 | } | |
588 | ||
589 | /* | |
590 | * Arg: | |
591 | * device : video output device (VGA) | |
592 | * | |
593 | * Return Value: | |
594 | * None | |
595 | * | |
596 | * Find out all required AML method defined under the video bus device. | |
597 | */ | |
598 | ||
4be44fcd | 599 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 600 | { |
4be44fcd | 601 | acpi_handle h_dummy1; |
1da177e4 | 602 | |
4be44fcd LB |
603 | memset(&video->cap, 0, 4); |
604 | if (ACPI_SUCCESS(acpi_get_handle(video->handle, "_DOS", &h_dummy1))) { | |
1da177e4 LT |
605 | video->cap._DOS = 1; |
606 | } | |
4be44fcd | 607 | if (ACPI_SUCCESS(acpi_get_handle(video->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
608 | video->cap._DOD = 1; |
609 | } | |
4be44fcd | 610 | if (ACPI_SUCCESS(acpi_get_handle(video->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
611 | video->cap._ROM = 1; |
612 | } | |
4be44fcd | 613 | if (ACPI_SUCCESS(acpi_get_handle(video->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
614 | video->cap._GPD = 1; |
615 | } | |
4be44fcd | 616 | if (ACPI_SUCCESS(acpi_get_handle(video->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
617 | video->cap._SPD = 1; |
618 | } | |
4be44fcd | 619 | if (ACPI_SUCCESS(acpi_get_handle(video->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
620 | video->cap._VPO = 1; |
621 | } | |
622 | } | |
623 | ||
624 | /* | |
625 | * Check whether the video bus device has required AML method to | |
626 | * support the desired features | |
627 | */ | |
628 | ||
4be44fcd | 629 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 630 | { |
4be44fcd | 631 | acpi_status status = -ENOENT; |
1da177e4 LT |
632 | |
633 | ACPI_FUNCTION_TRACE("acpi_video_bus_check"); | |
634 | ||
635 | if (!video) | |
636 | return_VALUE(-EINVAL); | |
637 | ||
638 | /* Since there is no HID, CID and so on for VGA driver, we have | |
639 | * to check well known required nodes. | |
640 | */ | |
641 | ||
642 | /* Does this device able to support video switching ? */ | |
4be44fcd | 643 | if (video->cap._DOS) { |
1da177e4 LT |
644 | video->flags.multihead = 1; |
645 | status = 0; | |
646 | } | |
647 | ||
648 | /* Does this device able to retrieve a retrieve a video ROM ? */ | |
4be44fcd | 649 | if (video->cap._ROM) { |
1da177e4 LT |
650 | video->flags.rom = 1; |
651 | status = 0; | |
652 | } | |
653 | ||
654 | /* Does this device able to configure which video device to POST ? */ | |
4be44fcd | 655 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
656 | video->flags.post = 1; |
657 | status = 0; | |
658 | } | |
659 | ||
660 | return_VALUE(status); | |
661 | } | |
662 | ||
663 | /* -------------------------------------------------------------------------- | |
664 | FS Interface (/proc) | |
665 | -------------------------------------------------------------------------- */ | |
666 | ||
4be44fcd | 667 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
668 | |
669 | /* video devices */ | |
670 | ||
4be44fcd | 671 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 672 | { |
4be44fcd LB |
673 | struct acpi_video_device *dev = |
674 | (struct acpi_video_device *)seq->private; | |
1da177e4 LT |
675 | |
676 | ACPI_FUNCTION_TRACE("acpi_video_device_info_seq_show"); | |
677 | ||
678 | if (!dev) | |
679 | goto end; | |
680 | ||
681 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
682 | seq_printf(seq, "type: "); | |
683 | if (dev->flags.crt) | |
684 | seq_printf(seq, "CRT\n"); | |
685 | else if (dev->flags.lcd) | |
686 | seq_printf(seq, "LCD\n"); | |
687 | else if (dev->flags.tvout) | |
688 | seq_printf(seq, "TVOUT\n"); | |
689 | else | |
690 | seq_printf(seq, "UNKNOWN\n"); | |
691 | ||
4be44fcd | 692 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 693 | |
4be44fcd | 694 | end: |
1da177e4 LT |
695 | return_VALUE(0); |
696 | } | |
697 | ||
698 | static int | |
4be44fcd | 699 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
700 | { |
701 | return single_open(file, acpi_video_device_info_seq_show, | |
702 | PDE(inode)->data); | |
703 | } | |
704 | ||
4be44fcd | 705 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 706 | { |
4be44fcd LB |
707 | int status; |
708 | struct acpi_video_device *dev = | |
709 | (struct acpi_video_device *)seq->private; | |
710 | unsigned long state; | |
1da177e4 LT |
711 | |
712 | ACPI_FUNCTION_TRACE("acpi_video_device_state_seq_show"); | |
713 | ||
714 | if (!dev) | |
715 | goto end; | |
716 | ||
717 | status = acpi_video_device_get_state(dev, &state); | |
718 | seq_printf(seq, "state: "); | |
719 | if (ACPI_SUCCESS(status)) | |
720 | seq_printf(seq, "0x%02lx\n", state); | |
721 | else | |
722 | seq_printf(seq, "<not supported>\n"); | |
723 | ||
724 | status = acpi_video_device_query(dev, &state); | |
725 | seq_printf(seq, "query: "); | |
726 | if (ACPI_SUCCESS(status)) | |
727 | seq_printf(seq, "0x%02lx\n", state); | |
728 | else | |
729 | seq_printf(seq, "<not supported>\n"); | |
730 | ||
4be44fcd | 731 | end: |
1da177e4 LT |
732 | return_VALUE(0); |
733 | } | |
734 | ||
735 | static int | |
4be44fcd | 736 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
737 | { |
738 | return single_open(file, acpi_video_device_state_seq_show, | |
739 | PDE(inode)->data); | |
740 | } | |
741 | ||
742 | static ssize_t | |
4be44fcd LB |
743 | acpi_video_device_write_state(struct file *file, |
744 | const char __user * buffer, | |
745 | size_t count, loff_t * data) | |
1da177e4 | 746 | { |
4be44fcd LB |
747 | int status; |
748 | struct seq_file *m = (struct seq_file *)file->private_data; | |
749 | struct acpi_video_device *dev = (struct acpi_video_device *)m->private; | |
750 | char str[12] = { 0 }; | |
751 | u32 state = 0; | |
1da177e4 LT |
752 | |
753 | ACPI_FUNCTION_TRACE("acpi_video_device_write_state"); | |
754 | ||
755 | if (!dev || count + 1 > sizeof str) | |
756 | return_VALUE(-EINVAL); | |
757 | ||
758 | if (copy_from_user(str, buffer, count)) | |
759 | return_VALUE(-EFAULT); | |
760 | ||
761 | str[count] = 0; | |
762 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 763 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
764 | |
765 | status = acpi_video_device_set_state(dev, state); | |
766 | ||
767 | if (status) | |
768 | return_VALUE(-EFAULT); | |
769 | ||
770 | return_VALUE(count); | |
771 | } | |
772 | ||
773 | static int | |
4be44fcd | 774 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 775 | { |
4be44fcd LB |
776 | struct acpi_video_device *dev = |
777 | (struct acpi_video_device *)seq->private; | |
778 | int i; | |
1da177e4 LT |
779 | |
780 | ACPI_FUNCTION_TRACE("acpi_video_device_brightness_seq_show"); | |
781 | ||
782 | if (!dev || !dev->brightness) { | |
783 | seq_printf(seq, "<not supported>\n"); | |
784 | return_VALUE(0); | |
785 | } | |
786 | ||
787 | seq_printf(seq, "levels: "); | |
788 | for (i = 0; i < dev->brightness->count; i++) | |
789 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
790 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
791 | ||
792 | return_VALUE(0); | |
793 | } | |
794 | ||
795 | static int | |
4be44fcd | 796 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
797 | { |
798 | return single_open(file, acpi_video_device_brightness_seq_show, | |
799 | PDE(inode)->data); | |
800 | } | |
801 | ||
802 | static ssize_t | |
4be44fcd LB |
803 | acpi_video_device_write_brightness(struct file *file, |
804 | const char __user * buffer, | |
805 | size_t count, loff_t * data) | |
1da177e4 | 806 | { |
4be44fcd LB |
807 | struct seq_file *m = (struct seq_file *)file->private_data; |
808 | struct acpi_video_device *dev = (struct acpi_video_device *)m->private; | |
809 | char str[4] = { 0 }; | |
810 | unsigned int level = 0; | |
811 | int i; | |
1da177e4 LT |
812 | |
813 | ACPI_FUNCTION_TRACE("acpi_video_device_write_brightness"); | |
814 | ||
59d399d3 | 815 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
1da177e4 LT |
816 | return_VALUE(-EINVAL); |
817 | ||
818 | if (copy_from_user(str, buffer, count)) | |
819 | return_VALUE(-EFAULT); | |
820 | ||
821 | str[count] = 0; | |
822 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 823 | |
1da177e4 LT |
824 | if (level > 100) |
825 | return_VALUE(-EFAULT); | |
826 | ||
827 | /* validate though the list of available levels */ | |
828 | for (i = 0; i < dev->brightness->count; i++) | |
829 | if (level == dev->brightness->levels[i]) { | |
4be44fcd LB |
830 | if (ACPI_SUCCESS |
831 | (acpi_video_device_lcd_set_level(dev, level))) | |
1da177e4 LT |
832 | dev->brightness->curr = level; |
833 | break; | |
834 | } | |
835 | ||
836 | return_VALUE(count); | |
837 | } | |
838 | ||
4be44fcd | 839 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 840 | { |
4be44fcd LB |
841 | struct acpi_video_device *dev = |
842 | (struct acpi_video_device *)seq->private; | |
843 | int status; | |
844 | int i; | |
845 | union acpi_object *edid = NULL; | |
1da177e4 LT |
846 | |
847 | ACPI_FUNCTION_TRACE("acpi_video_device_EDID_seq_show"); | |
848 | ||
849 | if (!dev) | |
850 | goto out; | |
851 | ||
4be44fcd | 852 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 853 | if (ACPI_FAILURE(status)) { |
4be44fcd | 854 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
855 | } |
856 | ||
857 | if (ACPI_FAILURE(status)) { | |
858 | goto out; | |
859 | } | |
860 | ||
861 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
862 | for (i = 0; i < edid->buffer.length; i++) | |
863 | seq_putc(seq, edid->buffer.pointer[i]); | |
864 | } | |
865 | ||
4be44fcd | 866 | out: |
1da177e4 LT |
867 | if (!edid) |
868 | seq_printf(seq, "<not supported>\n"); | |
869 | else | |
870 | kfree(edid); | |
871 | ||
872 | return_VALUE(0); | |
873 | } | |
874 | ||
875 | static int | |
4be44fcd | 876 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
877 | { |
878 | return single_open(file, acpi_video_device_EDID_seq_show, | |
879 | PDE(inode)->data); | |
880 | } | |
881 | ||
4be44fcd | 882 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 883 | { |
4be44fcd | 884 | struct proc_dir_entry *entry = NULL; |
1da177e4 LT |
885 | struct acpi_video_device *vid_dev; |
886 | ||
887 | ACPI_FUNCTION_TRACE("acpi_video_device_add_fs"); | |
888 | ||
889 | if (!device) | |
890 | return_VALUE(-ENODEV); | |
891 | ||
4be44fcd | 892 | vid_dev = (struct acpi_video_device *)acpi_driver_data(device); |
1da177e4 LT |
893 | if (!vid_dev) |
894 | return_VALUE(-ENODEV); | |
895 | ||
896 | if (!acpi_device_dir(device)) { | |
897 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 898 | vid_dev->video->dir); |
1da177e4 LT |
899 | if (!acpi_device_dir(device)) |
900 | return_VALUE(-ENODEV); | |
901 | acpi_device_dir(device)->owner = THIS_MODULE; | |
902 | } | |
903 | ||
904 | /* 'info' [R] */ | |
905 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
906 | if (!entry) | |
907 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 908 | "Unable to create 'info' fs entry\n")); |
1da177e4 LT |
909 | else { |
910 | entry->proc_fops = &acpi_video_device_info_fops; | |
911 | entry->data = acpi_driver_data(device); | |
912 | entry->owner = THIS_MODULE; | |
913 | } | |
914 | ||
915 | /* 'state' [R/W] */ | |
4be44fcd LB |
916 | entry = |
917 | create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR, | |
918 | acpi_device_dir(device)); | |
1da177e4 LT |
919 | if (!entry) |
920 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 921 | "Unable to create 'state' fs entry\n")); |
1da177e4 LT |
922 | else { |
923 | entry->proc_fops = &acpi_video_device_state_fops; | |
924 | entry->proc_fops->write = acpi_video_device_write_state; | |
925 | entry->data = acpi_driver_data(device); | |
926 | entry->owner = THIS_MODULE; | |
927 | } | |
928 | ||
929 | /* 'brightness' [R/W] */ | |
4be44fcd LB |
930 | entry = |
931 | create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
932 | acpi_device_dir(device)); | |
1da177e4 LT |
933 | if (!entry) |
934 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 935 | "Unable to create 'brightness' fs entry\n")); |
1da177e4 LT |
936 | else { |
937 | entry->proc_fops = &acpi_video_device_brightness_fops; | |
938 | entry->proc_fops->write = acpi_video_device_write_brightness; | |
939 | entry->data = acpi_driver_data(device); | |
940 | entry->owner = THIS_MODULE; | |
941 | } | |
942 | ||
943 | /* 'EDID' [R] */ | |
944 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); | |
945 | if (!entry) | |
946 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 947 | "Unable to create 'brightness' fs entry\n")); |
1da177e4 LT |
948 | else { |
949 | entry->proc_fops = &acpi_video_device_EDID_fops; | |
950 | entry->data = acpi_driver_data(device); | |
951 | entry->owner = THIS_MODULE; | |
952 | } | |
953 | ||
954 | return_VALUE(0); | |
955 | } | |
956 | ||
4be44fcd | 957 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
958 | { |
959 | struct acpi_video_device *vid_dev; | |
960 | ACPI_FUNCTION_TRACE("acpi_video_device_remove_fs"); | |
961 | ||
4be44fcd | 962 | vid_dev = (struct acpi_video_device *)acpi_driver_data(device); |
1da177e4 LT |
963 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
964 | return_VALUE(-ENODEV); | |
965 | ||
966 | if (acpi_device_dir(device)) { | |
967 | remove_proc_entry("info", acpi_device_dir(device)); | |
968 | remove_proc_entry("state", acpi_device_dir(device)); | |
969 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
970 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
4be44fcd | 971 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
972 | acpi_device_dir(device) = NULL; |
973 | } | |
974 | ||
975 | return_VALUE(0); | |
976 | } | |
977 | ||
1da177e4 | 978 | /* video bus */ |
4be44fcd | 979 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 980 | { |
4be44fcd | 981 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1da177e4 LT |
982 | |
983 | ACPI_FUNCTION_TRACE("acpi_video_bus_info_seq_show"); | |
984 | ||
985 | if (!video) | |
986 | goto end; | |
987 | ||
988 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 989 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 990 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 991 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 992 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 993 | video->flags.post ? "yes" : "no"); |
1da177e4 | 994 | |
4be44fcd | 995 | end: |
1da177e4 LT |
996 | return_VALUE(0); |
997 | } | |
998 | ||
4be44fcd | 999 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1000 | { |
4be44fcd LB |
1001 | return single_open(file, acpi_video_bus_info_seq_show, |
1002 | PDE(inode)->data); | |
1da177e4 LT |
1003 | } |
1004 | ||
4be44fcd | 1005 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1006 | { |
4be44fcd | 1007 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1da177e4 LT |
1008 | |
1009 | ACPI_FUNCTION_TRACE("acpi_video_bus_ROM_seq_show"); | |
1010 | ||
1011 | if (!video) | |
1012 | goto end; | |
1013 | ||
1014 | printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__); | |
1015 | seq_printf(seq, "<TODO>\n"); | |
1016 | ||
4be44fcd | 1017 | end: |
1da177e4 LT |
1018 | return_VALUE(0); |
1019 | } | |
1020 | ||
4be44fcd | 1021 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1022 | { |
1023 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1024 | } | |
1025 | ||
4be44fcd | 1026 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1027 | { |
4be44fcd LB |
1028 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1029 | unsigned long options; | |
1030 | int status; | |
1da177e4 LT |
1031 | |
1032 | ACPI_FUNCTION_TRACE("acpi_video_bus_POST_info_seq_show"); | |
1033 | ||
1034 | if (!video) | |
1035 | goto end; | |
1036 | ||
1037 | status = acpi_video_bus_POST_options(video, &options); | |
1038 | if (ACPI_SUCCESS(status)) { | |
1039 | if (!(options & 1)) { | |
4be44fcd LB |
1040 | printk(KERN_WARNING PREFIX |
1041 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1042 | printk(KERN_WARNING PREFIX | |
1043 | "This indicate a BIOS bug. Please contact the manufacturer.\n"); | |
1da177e4 LT |
1044 | } |
1045 | printk("%lx\n", options); | |
1046 | seq_printf(seq, "can POST: <intgrated video>"); | |
1047 | if (options & 2) | |
1048 | seq_printf(seq, " <PCI video>"); | |
1049 | if (options & 4) | |
1050 | seq_printf(seq, " <AGP video>"); | |
1051 | seq_putc(seq, '\n'); | |
1052 | } else | |
1053 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1054 | end: |
1da177e4 LT |
1055 | return_VALUE(0); |
1056 | } | |
1057 | ||
1058 | static int | |
4be44fcd | 1059 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1060 | { |
4be44fcd LB |
1061 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1062 | PDE(inode)->data); | |
1da177e4 LT |
1063 | } |
1064 | ||
4be44fcd | 1065 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1066 | { |
4be44fcd LB |
1067 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1068 | int status; | |
1069 | unsigned long id; | |
1da177e4 LT |
1070 | |
1071 | ACPI_FUNCTION_TRACE("acpi_video_bus_POST_seq_show"); | |
1072 | ||
1073 | if (!video) | |
1074 | goto end; | |
1075 | ||
4be44fcd | 1076 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1077 | if (!ACPI_SUCCESS(status)) { |
1078 | seq_printf(seq, "<not supported>\n"); | |
1079 | goto end; | |
1080 | } | |
4be44fcd | 1081 | seq_printf(seq, "device posted is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1082 | |
4be44fcd | 1083 | end: |
1da177e4 LT |
1084 | return_VALUE(0); |
1085 | } | |
1086 | ||
4be44fcd | 1087 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1088 | { |
4be44fcd | 1089 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1da177e4 LT |
1090 | |
1091 | ACPI_FUNCTION_TRACE("acpi_video_bus_DOS_seq_show"); | |
1092 | ||
4be44fcd | 1093 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 LT |
1094 | |
1095 | return_VALUE(0); | |
1096 | } | |
1097 | ||
4be44fcd | 1098 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1099 | { |
4be44fcd LB |
1100 | return single_open(file, acpi_video_bus_POST_seq_show, |
1101 | PDE(inode)->data); | |
1da177e4 LT |
1102 | } |
1103 | ||
4be44fcd | 1104 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1105 | { |
1106 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1107 | } | |
1108 | ||
1109 | static ssize_t | |
4be44fcd LB |
1110 | acpi_video_bus_write_POST(struct file *file, |
1111 | const char __user * buffer, | |
1112 | size_t count, loff_t * data) | |
1da177e4 | 1113 | { |
4be44fcd LB |
1114 | int status; |
1115 | struct seq_file *m = (struct seq_file *)file->private_data; | |
1116 | struct acpi_video_bus *video = (struct acpi_video_bus *)m->private; | |
1117 | char str[12] = { 0 }; | |
1118 | unsigned long opt, options; | |
1da177e4 LT |
1119 | |
1120 | ACPI_FUNCTION_TRACE("acpi_video_bus_write_POST"); | |
1121 | ||
1da177e4 LT |
1122 | if (!video || count + 1 > sizeof str) |
1123 | return_VALUE(-EINVAL); | |
1124 | ||
1125 | status = acpi_video_bus_POST_options(video, &options); | |
1126 | if (!ACPI_SUCCESS(status)) | |
1127 | return_VALUE(-EINVAL); | |
1128 | ||
1129 | if (copy_from_user(str, buffer, count)) | |
1130 | return_VALUE(-EFAULT); | |
1131 | ||
1132 | str[count] = 0; | |
1133 | opt = strtoul(str, NULL, 0); | |
1134 | if (opt > 3) | |
1135 | return_VALUE(-EFAULT); | |
1136 | ||
1137 | /* just in case an OEM 'forget' the motherboard... */ | |
1138 | options |= 1; | |
1139 | ||
1140 | if (options & (1ul << opt)) { | |
4be44fcd | 1141 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 LT |
1142 | if (!ACPI_SUCCESS(status)) |
1143 | return_VALUE(-EFAULT); | |
1144 | ||
1145 | } | |
1146 | ||
1da177e4 LT |
1147 | return_VALUE(count); |
1148 | } | |
1149 | ||
1150 | static ssize_t | |
4be44fcd LB |
1151 | acpi_video_bus_write_DOS(struct file *file, |
1152 | const char __user * buffer, | |
1153 | size_t count, loff_t * data) | |
1da177e4 | 1154 | { |
4be44fcd LB |
1155 | int status; |
1156 | struct seq_file *m = (struct seq_file *)file->private_data; | |
1157 | struct acpi_video_bus *video = (struct acpi_video_bus *)m->private; | |
1158 | char str[12] = { 0 }; | |
1159 | unsigned long opt; | |
1da177e4 LT |
1160 | |
1161 | ACPI_FUNCTION_TRACE("acpi_video_bus_write_DOS"); | |
1162 | ||
1da177e4 LT |
1163 | if (!video || count + 1 > sizeof str) |
1164 | return_VALUE(-EINVAL); | |
1165 | ||
1166 | if (copy_from_user(str, buffer, count)) | |
1167 | return_VALUE(-EFAULT); | |
1168 | ||
1169 | str[count] = 0; | |
1170 | opt = strtoul(str, NULL, 0); | |
1171 | if (opt > 7) | |
1172 | return_VALUE(-EFAULT); | |
1173 | ||
4be44fcd | 1174 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1175 | |
1176 | if (!ACPI_SUCCESS(status)) | |
1177 | return_VALUE(-EFAULT); | |
1178 | ||
1179 | return_VALUE(count); | |
1180 | } | |
1181 | ||
4be44fcd | 1182 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1183 | { |
4be44fcd LB |
1184 | struct proc_dir_entry *entry = NULL; |
1185 | struct acpi_video_bus *video; | |
1da177e4 LT |
1186 | |
1187 | ACPI_FUNCTION_TRACE("acpi_video_bus_add_fs"); | |
1188 | ||
4be44fcd | 1189 | video = (struct acpi_video_bus *)acpi_driver_data(device); |
1da177e4 LT |
1190 | |
1191 | if (!acpi_device_dir(device)) { | |
1192 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1193 | acpi_video_dir); |
1da177e4 LT |
1194 | if (!acpi_device_dir(device)) |
1195 | return_VALUE(-ENODEV); | |
1196 | video->dir = acpi_device_dir(device); | |
1197 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1198 | } | |
1199 | ||
1200 | /* 'info' [R] */ | |
1201 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1202 | if (!entry) | |
4be44fcd LB |
1203 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
1204 | "Unable to create 'info' fs entry\n")); | |
1da177e4 LT |
1205 | else { |
1206 | entry->proc_fops = &acpi_video_bus_info_fops; | |
1207 | entry->data = acpi_driver_data(device); | |
1208 | entry->owner = THIS_MODULE; | |
1209 | } | |
1210 | ||
1211 | /* 'ROM' [R] */ | |
1212 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); | |
1213 | if (!entry) | |
4be44fcd LB |
1214 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
1215 | "Unable to create 'ROM' fs entry\n")); | |
1da177e4 LT |
1216 | else { |
1217 | entry->proc_fops = &acpi_video_bus_ROM_fops; | |
1218 | entry->data = acpi_driver_data(device); | |
1219 | entry->owner = THIS_MODULE; | |
1220 | } | |
1221 | ||
1222 | /* 'POST_info' [R] */ | |
4be44fcd LB |
1223 | entry = |
1224 | create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); | |
1da177e4 | 1225 | if (!entry) |
4be44fcd LB |
1226 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
1227 | "Unable to create 'POST_info' fs entry\n")); | |
1da177e4 LT |
1228 | else { |
1229 | entry->proc_fops = &acpi_video_bus_POST_info_fops; | |
1230 | entry->data = acpi_driver_data(device); | |
1231 | entry->owner = THIS_MODULE; | |
1232 | } | |
1233 | ||
1234 | /* 'POST' [R/W] */ | |
4be44fcd LB |
1235 | entry = |
1236 | create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR, | |
1237 | acpi_device_dir(device)); | |
1da177e4 | 1238 | if (!entry) |
4be44fcd LB |
1239 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
1240 | "Unable to create 'POST' fs entry\n")); | |
1da177e4 LT |
1241 | else { |
1242 | entry->proc_fops = &acpi_video_bus_POST_fops; | |
1243 | entry->proc_fops->write = acpi_video_bus_write_POST; | |
1244 | entry->data = acpi_driver_data(device); | |
1245 | entry->owner = THIS_MODULE; | |
1246 | } | |
1247 | ||
1248 | /* 'DOS' [R/W] */ | |
4be44fcd LB |
1249 | entry = |
1250 | create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR, | |
1251 | acpi_device_dir(device)); | |
1da177e4 | 1252 | if (!entry) |
4be44fcd LB |
1253 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
1254 | "Unable to create 'DOS' fs entry\n")); | |
1da177e4 LT |
1255 | else { |
1256 | entry->proc_fops = &acpi_video_bus_DOS_fops; | |
1257 | entry->proc_fops->write = acpi_video_bus_write_DOS; | |
1258 | entry->data = acpi_driver_data(device); | |
1259 | entry->owner = THIS_MODULE; | |
1260 | } | |
1261 | ||
1262 | return_VALUE(0); | |
1263 | } | |
1264 | ||
4be44fcd | 1265 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1266 | { |
4be44fcd | 1267 | struct acpi_video_bus *video; |
1da177e4 LT |
1268 | |
1269 | ACPI_FUNCTION_TRACE("acpi_video_bus_remove_fs"); | |
1270 | ||
4be44fcd | 1271 | video = (struct acpi_video_bus *)acpi_driver_data(device); |
1da177e4 LT |
1272 | |
1273 | if (acpi_device_dir(device)) { | |
1274 | remove_proc_entry("info", acpi_device_dir(device)); | |
1275 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1276 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1277 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1278 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
4be44fcd | 1279 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1280 | acpi_device_dir(device) = NULL; |
1281 | } | |
1282 | ||
1283 | return_VALUE(0); | |
1284 | } | |
1285 | ||
1286 | /* -------------------------------------------------------------------------- | |
1287 | Driver Interface | |
1288 | -------------------------------------------------------------------------- */ | |
1289 | ||
1290 | /* device interface */ | |
1291 | ||
1292 | static int | |
4be44fcd LB |
1293 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1294 | struct acpi_video_bus *video) | |
1da177e4 | 1295 | { |
4be44fcd LB |
1296 | unsigned long device_id; |
1297 | int status, result; | |
1298 | struct acpi_video_device *data; | |
1da177e4 LT |
1299 | |
1300 | ACPI_FUNCTION_TRACE("acpi_video_bus_get_one_device"); | |
1301 | ||
1302 | if (!device || !video) | |
1303 | return_VALUE(-EINVAL); | |
1304 | ||
4be44fcd LB |
1305 | status = |
1306 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1307 | if (ACPI_SUCCESS(status)) { |
1308 | ||
1309 | data = kmalloc(sizeof(struct acpi_video_device), GFP_KERNEL); | |
1310 | if (!data) | |
1311 | return_VALUE(-ENOMEM); | |
1312 | ||
1313 | memset(data, 0, sizeof(struct acpi_video_device)); | |
1314 | ||
1315 | data->handle = device->handle; | |
1316 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); | |
1317 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1318 | acpi_driver_data(device) = data; | |
1319 | ||
1320 | data->device_id = device_id; | |
1321 | data->video = video; | |
1322 | data->dev = device; | |
1323 | ||
1324 | switch (device_id & 0xffff) { | |
1325 | case 0x0100: | |
1326 | data->flags.crt = 1; | |
1327 | break; | |
1328 | case 0x0400: | |
1329 | data->flags.lcd = 1; | |
1330 | break; | |
1331 | case 0x0200: | |
1332 | data->flags.tvout = 1; | |
1333 | break; | |
1334 | default: | |
1335 | data->flags.unknown = 1; | |
1336 | break; | |
1337 | } | |
4be44fcd | 1338 | |
1da177e4 LT |
1339 | acpi_video_device_bind(video, data); |
1340 | acpi_video_device_find_cap(data); | |
1341 | ||
1342 | status = acpi_install_notify_handler(data->handle, | |
4be44fcd LB |
1343 | ACPI_DEVICE_NOTIFY, |
1344 | acpi_video_device_notify, | |
1345 | data); | |
1da177e4 LT |
1346 | if (ACPI_FAILURE(status)) { |
1347 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1348 | "Error installing notify handler\n")); |
1da177e4 LT |
1349 | result = -ENODEV; |
1350 | goto end; | |
1351 | } | |
1352 | ||
1353 | down(&video->sem); | |
1354 | list_add_tail(&data->entry, &video->video_device_list); | |
1355 | up(&video->sem); | |
1356 | ||
1357 | acpi_video_device_add_fs(device); | |
1358 | ||
1359 | return_VALUE(0); | |
1360 | } | |
1361 | ||
4be44fcd | 1362 | end: |
1da177e4 LT |
1363 | return_VALUE(-ENOENT); |
1364 | } | |
1365 | ||
1366 | /* | |
1367 | * Arg: | |
1368 | * video : video bus device | |
1369 | * | |
1370 | * Return: | |
1371 | * none | |
1372 | * | |
1373 | * Enumerate the video device list of the video bus, | |
1374 | * bind the ids with the corresponding video devices | |
1375 | * under the video bus. | |
4be44fcd | 1376 | */ |
1da177e4 | 1377 | |
4be44fcd | 1378 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1379 | { |
4be44fcd | 1380 | struct list_head *node, *next; |
1da177e4 | 1381 | list_for_each_safe(node, next, &video->video_device_list) { |
4be44fcd LB |
1382 | struct acpi_video_device *dev = |
1383 | container_of(node, struct acpi_video_device, entry); | |
1384 | acpi_video_device_bind(video, dev); | |
1da177e4 LT |
1385 | } |
1386 | } | |
1387 | ||
1388 | /* | |
1389 | * Arg: | |
1390 | * video : video bus device | |
1391 | * device : video output device under the video | |
1392 | * bus | |
1393 | * | |
1394 | * Return: | |
1395 | * none | |
1396 | * | |
1397 | * Bind the ids with the corresponding video devices | |
1398 | * under the video bus. | |
4be44fcd | 1399 | */ |
1da177e4 LT |
1400 | |
1401 | static void | |
4be44fcd LB |
1402 | acpi_video_device_bind(struct acpi_video_bus *video, |
1403 | struct acpi_video_device *device) | |
1da177e4 | 1404 | { |
4be44fcd | 1405 | int i; |
1da177e4 LT |
1406 | ACPI_FUNCTION_TRACE("acpi_video_device_bind"); |
1407 | ||
1408 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1409 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
4be44fcd LB |
1410 | |
1411 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1412 | i < video->attached_count; i++) { | |
1413 | if (device->device_id == (IDS_VAL(i) & 0xffff)) { | |
1da177e4 LT |
1414 | IDS_BIND(i) = device; |
1415 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1416 | } | |
1417 | } | |
1418 | #undef IDS_VAL | |
1419 | #undef IDS_BIND | |
1420 | } | |
1421 | ||
1422 | /* | |
1423 | * Arg: | |
1424 | * video : video bus device | |
1425 | * | |
1426 | * Return: | |
1427 | * < 0 : error | |
1428 | * | |
1429 | * Call _DOD to enumerate all devices attached to display adapter | |
1430 | * | |
4be44fcd | 1431 | */ |
1da177e4 LT |
1432 | |
1433 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1434 | { | |
4be44fcd LB |
1435 | int status; |
1436 | int count; | |
1437 | int i; | |
1da177e4 | 1438 | struct acpi_video_enumerated_device *active_device_list; |
4be44fcd LB |
1439 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1440 | union acpi_object *dod = NULL; | |
1441 | union acpi_object *obj; | |
1da177e4 LT |
1442 | |
1443 | ACPI_FUNCTION_TRACE("acpi_video_device_enumerate"); | |
1444 | ||
1445 | status = acpi_evaluate_object(video->handle, "_DOD", NULL, &buffer); | |
1446 | if (!ACPI_SUCCESS(status)) { | |
1447 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _DOD\n")); | |
1448 | return_VALUE(status); | |
1449 | } | |
1450 | ||
4be44fcd | 1451 | dod = (union acpi_object *)buffer.pointer; |
1da177e4 LT |
1452 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
1453 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _DOD data\n")); | |
1454 | status = -EFAULT; | |
1455 | goto out; | |
1456 | } | |
1457 | ||
1458 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1459 | dod->package.count)); |
1da177e4 | 1460 | |
4be44fcd LB |
1461 | active_device_list = kmalloc((1 + |
1462 | dod->package.count) * | |
1463 | sizeof(struct | |
1464 | acpi_video_enumerated_device), | |
1465 | GFP_KERNEL); | |
1da177e4 LT |
1466 | |
1467 | if (!active_device_list) { | |
1468 | status = -ENOMEM; | |
1469 | goto out; | |
1470 | } | |
1471 | ||
1472 | count = 0; | |
1473 | for (i = 0; i < dod->package.count; i++) { | |
4be44fcd | 1474 | obj = (union acpi_object *)&dod->package.elements[i]; |
1da177e4 LT |
1475 | |
1476 | if (obj->type != ACPI_TYPE_INTEGER) { | |
4be44fcd LB |
1477 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
1478 | "Invalid _DOD data\n")); | |
1479 | active_device_list[i].value.int_val = | |
1480 | ACPI_VIDEO_HEAD_INVALID; | |
1da177e4 LT |
1481 | } |
1482 | active_device_list[i].value.int_val = obj->integer.value; | |
1483 | active_device_list[i].bind_info = NULL; | |
4be44fcd LB |
1484 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1485 | (int)obj->integer.value)); | |
1da177e4 LT |
1486 | count++; |
1487 | } | |
1488 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1489 | ||
6044ec88 | 1490 | kfree(video->attached_array); |
4be44fcd | 1491 | |
1da177e4 LT |
1492 | video->attached_array = active_device_list; |
1493 | video->attached_count = count; | |
4be44fcd | 1494 | out: |
1da177e4 LT |
1495 | acpi_os_free(buffer.pointer); |
1496 | return_VALUE(status); | |
1497 | } | |
1498 | ||
1499 | /* | |
1500 | * Arg: | |
1501 | * video : video bus device | |
1502 | * event : Nontify Event | |
1503 | * | |
1504 | * Return: | |
1505 | * < 0 : error | |
1506 | * | |
1507 | * 1. Find out the current active output device. | |
1508 | * 2. Identify the next output device to switch | |
1509 | * 3. call _DSS to do actual switch. | |
4be44fcd | 1510 | */ |
1da177e4 | 1511 | |
4be44fcd | 1512 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event) |
1da177e4 | 1513 | { |
4be44fcd LB |
1514 | struct list_head *node, *next; |
1515 | struct acpi_video_device *dev = NULL; | |
1516 | struct acpi_video_device *dev_next = NULL; | |
1517 | struct acpi_video_device *dev_prev = NULL; | |
1da177e4 LT |
1518 | unsigned long state; |
1519 | int status = 0; | |
1520 | ||
1521 | ACPI_FUNCTION_TRACE("acpi_video_switch_output"); | |
1522 | ||
1523 | list_for_each_safe(node, next, &video->video_device_list) { | |
7334571f | 1524 | dev = container_of(node, struct acpi_video_device, entry); |
1da177e4 | 1525 | status = acpi_video_device_get_state(dev, &state); |
4be44fcd LB |
1526 | if (state & 0x2) { |
1527 | dev_next = | |
1528 | container_of(node->next, struct acpi_video_device, | |
1529 | entry); | |
1530 | dev_prev = | |
1531 | container_of(node->prev, struct acpi_video_device, | |
1532 | entry); | |
1da177e4 LT |
1533 | goto out; |
1534 | } | |
1535 | } | |
1536 | dev_next = container_of(node->next, struct acpi_video_device, entry); | |
1537 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); | |
4be44fcd | 1538 | out: |
1da177e4 LT |
1539 | switch (event) { |
1540 | case ACPI_VIDEO_NOTIFY_CYCLE: | |
1541 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: | |
1542 | acpi_video_device_set_state(dev, 0); | |
1543 | acpi_video_device_set_state(dev_next, 0x80000001); | |
1544 | break; | |
1545 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: | |
1546 | acpi_video_device_set_state(dev, 0); | |
1547 | acpi_video_device_set_state(dev_prev, 0x80000001); | |
1548 | default: | |
1549 | break; | |
1550 | } | |
1551 | ||
1552 | return_VALUE(status); | |
1553 | } | |
1554 | ||
4be44fcd LB |
1555 | static int |
1556 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1557 | u32 level_current, u32 event) | |
1da177e4 | 1558 | { |
4be44fcd | 1559 | /*Fix me */ |
1da177e4 LT |
1560 | return level_current; |
1561 | } | |
1562 | ||
1da177e4 | 1563 | static void |
4be44fcd | 1564 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 LT |
1565 | { |
1566 | unsigned long level_current, level_next; | |
1567 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1568 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1569 | acpi_video_device_lcd_set_level(device, level_next); | |
1570 | } | |
1571 | ||
1572 | static int | |
4be44fcd LB |
1573 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1574 | struct acpi_device *device) | |
1da177e4 | 1575 | { |
4be44fcd LB |
1576 | int status = 0; |
1577 | struct list_head *node, *next; | |
1da177e4 LT |
1578 | |
1579 | ACPI_FUNCTION_TRACE("acpi_video_get_devices"); | |
1580 | ||
1581 | acpi_video_device_enumerate(video); | |
1582 | ||
1583 | list_for_each_safe(node, next, &device->children) { | |
4be44fcd LB |
1584 | struct acpi_device *dev = |
1585 | list_entry(node, struct acpi_device, node); | |
1da177e4 LT |
1586 | |
1587 | if (!dev) | |
1588 | continue; | |
1589 | ||
1590 | status = acpi_video_bus_get_one_device(dev, video); | |
1591 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
1592 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
1593 | "Cant attach device\n")); | |
1da177e4 LT |
1594 | continue; |
1595 | } | |
1596 | ||
1597 | } | |
1598 | return_VALUE(status); | |
1599 | } | |
1600 | ||
4be44fcd | 1601 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1602 | { |
031ec77b | 1603 | acpi_status status; |
1da177e4 LT |
1604 | struct acpi_video_bus *video; |
1605 | ||
1606 | ACPI_FUNCTION_TRACE("acpi_video_bus_put_one_device"); | |
1607 | ||
1608 | if (!device || !device->video) | |
1609 | return_VALUE(-ENOENT); | |
1610 | ||
1611 | video = device->video; | |
1612 | ||
1613 | down(&video->sem); | |
1614 | list_del(&device->entry); | |
1615 | up(&video->sem); | |
1616 | acpi_video_device_remove_fs(device->dev); | |
1617 | ||
031ec77b | 1618 | status = acpi_remove_notify_handler(device->handle, |
4be44fcd LB |
1619 | ACPI_DEVICE_NOTIFY, |
1620 | acpi_video_device_notify); | |
031ec77b KK |
1621 | if (ACPI_FAILURE(status)) |
1622 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1623 | "Error removing notify handler\n")); |
031ec77b | 1624 | |
1da177e4 LT |
1625 | return_VALUE(0); |
1626 | } | |
1627 | ||
4be44fcd | 1628 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1629 | { |
4be44fcd LB |
1630 | int status; |
1631 | struct list_head *node, *next; | |
1da177e4 LT |
1632 | |
1633 | ACPI_FUNCTION_TRACE("acpi_video_bus_put_devices"); | |
1634 | ||
1635 | list_for_each_safe(node, next, &video->video_device_list) { | |
4be44fcd LB |
1636 | struct acpi_video_device *data = |
1637 | list_entry(node, struct acpi_video_device, entry); | |
1da177e4 LT |
1638 | if (!data) |
1639 | continue; | |
1640 | ||
1641 | status = acpi_video_bus_put_one_device(data); | |
4be44fcd LB |
1642 | if (ACPI_FAILURE(status)) |
1643 | printk(KERN_WARNING PREFIX | |
1644 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1645 | |
6044ec88 | 1646 | kfree(data->brightness); |
1da177e4 LT |
1647 | |
1648 | kfree(data); | |
1649 | } | |
1650 | ||
1651 | return_VALUE(0); | |
1652 | } | |
1653 | ||
1654 | /* acpi_video interface */ | |
1655 | ||
4be44fcd | 1656 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1657 | { |
1658 | return acpi_video_bus_DOS(video, 1, 0); | |
1659 | } | |
1660 | ||
4be44fcd | 1661 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1662 | { |
1663 | return acpi_video_bus_DOS(video, 0, 1); | |
1664 | } | |
1665 | ||
4be44fcd | 1666 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1667 | { |
4be44fcd LB |
1668 | struct acpi_video_bus *video = (struct acpi_video_bus *)data; |
1669 | struct acpi_device *device = NULL; | |
1da177e4 LT |
1670 | |
1671 | ACPI_FUNCTION_TRACE("acpi_video_bus_notify"); | |
1672 | printk("video bus notify\n"); | |
1673 | ||
1674 | if (!video) | |
1675 | return_VOID; | |
1676 | ||
1677 | if (acpi_bus_get_device(handle, &device)) | |
1678 | return_VOID; | |
1679 | ||
1680 | switch (event) { | |
1681 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User request that a switch occur, | |
1682 | * most likely via hotkey. */ | |
1683 | acpi_bus_generate_event(device, event, 0); | |
1684 | break; | |
1685 | ||
1686 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plug or remove a video | |
1687 | * connector. */ | |
1688 | acpi_video_device_enumerate(video); | |
1689 | acpi_video_device_rebind(video); | |
1690 | acpi_video_switch_output(video, event); | |
1691 | acpi_bus_generate_event(device, event, 0); | |
1692 | break; | |
1693 | ||
4be44fcd LB |
1694 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
1695 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ | |
1696 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ | |
1da177e4 LT |
1697 | acpi_video_switch_output(video, event); |
1698 | acpi_bus_generate_event(device, event, 0); | |
1699 | break; | |
1700 | ||
1701 | default: | |
1702 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1703 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1704 | break; |
1705 | } | |
1706 | ||
1707 | return_VOID; | |
1708 | } | |
1709 | ||
4be44fcd | 1710 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1711 | { |
4be44fcd LB |
1712 | struct acpi_video_device *video_device = |
1713 | (struct acpi_video_device *)data; | |
1714 | struct acpi_device *device = NULL; | |
1da177e4 LT |
1715 | |
1716 | ACPI_FUNCTION_TRACE("acpi_video_device_notify"); | |
1717 | ||
1718 | printk("video device notify\n"); | |
1719 | if (!video_device) | |
1720 | return_VOID; | |
1721 | ||
1722 | if (acpi_bus_get_device(handle, &device)) | |
1723 | return_VOID; | |
1724 | ||
1725 | switch (event) { | |
4be44fcd LB |
1726 | case ACPI_VIDEO_NOTIFY_SWITCH: /* change in status (cycle output device) */ |
1727 | case ACPI_VIDEO_NOTIFY_PROBE: /* change in status (output device status) */ | |
1da177e4 LT |
1728 | acpi_bus_generate_event(device, event, 0); |
1729 | break; | |
4be44fcd LB |
1730 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
1731 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ | |
1732 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ | |
1733 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ | |
1734 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ | |
1735 | acpi_video_switch_brightness(video_device, event); | |
1da177e4 LT |
1736 | acpi_bus_generate_event(device, event, 0); |
1737 | break; | |
1738 | default: | |
1739 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1740 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1741 | break; |
1742 | } | |
1743 | return_VOID; | |
1744 | } | |
1745 | ||
4be44fcd | 1746 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1747 | { |
4be44fcd LB |
1748 | int result = 0; |
1749 | acpi_status status = 0; | |
1750 | struct acpi_video_bus *video = NULL; | |
1da177e4 LT |
1751 | |
1752 | ACPI_FUNCTION_TRACE("acpi_video_bus_add"); | |
4be44fcd | 1753 | |
1da177e4 LT |
1754 | if (!device) |
1755 | return_VALUE(-EINVAL); | |
1756 | ||
1757 | video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); | |
1758 | if (!video) | |
1759 | return_VALUE(-ENOMEM); | |
1760 | memset(video, 0, sizeof(struct acpi_video_bus)); | |
1761 | ||
1762 | video->handle = device->handle; | |
1763 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); | |
1764 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1765 | acpi_driver_data(device) = video; | |
1766 | ||
1767 | acpi_video_bus_find_cap(video); | |
1768 | result = acpi_video_bus_check(video); | |
1769 | if (result) | |
1770 | goto end; | |
1771 | ||
1772 | result = acpi_video_bus_add_fs(device); | |
1773 | if (result) | |
1774 | goto end; | |
1775 | ||
1776 | init_MUTEX(&video->sem); | |
1777 | INIT_LIST_HEAD(&video->video_device_list); | |
1778 | ||
1779 | acpi_video_bus_get_devices(video, device); | |
1780 | acpi_video_bus_start_devices(video); | |
1781 | ||
1782 | status = acpi_install_notify_handler(video->handle, | |
4be44fcd LB |
1783 | ACPI_DEVICE_NOTIFY, |
1784 | acpi_video_bus_notify, video); | |
1da177e4 LT |
1785 | if (ACPI_FAILURE(status)) { |
1786 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1787 | "Error installing notify handler\n")); |
1da177e4 LT |
1788 | result = -ENODEV; |
1789 | goto end; | |
1790 | } | |
1791 | ||
1792 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", | |
4be44fcd LB |
1793 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
1794 | video->flags.multihead ? "yes" : "no", | |
1795 | video->flags.rom ? "yes" : "no", | |
1796 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 1797 | |
4be44fcd | 1798 | end: |
1da177e4 LT |
1799 | if (result) { |
1800 | acpi_video_bus_remove_fs(device); | |
1801 | kfree(video); | |
1802 | } | |
1803 | ||
1804 | return_VALUE(result); | |
1805 | } | |
1806 | ||
4be44fcd | 1807 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 1808 | { |
4be44fcd LB |
1809 | acpi_status status = 0; |
1810 | struct acpi_video_bus *video = NULL; | |
1da177e4 LT |
1811 | |
1812 | ACPI_FUNCTION_TRACE("acpi_video_bus_remove"); | |
1813 | ||
1814 | if (!device || !acpi_driver_data(device)) | |
1815 | return_VALUE(-EINVAL); | |
1816 | ||
4be44fcd | 1817 | video = (struct acpi_video_bus *)acpi_driver_data(device); |
1da177e4 LT |
1818 | |
1819 | acpi_video_bus_stop_devices(video); | |
1820 | ||
1821 | status = acpi_remove_notify_handler(video->handle, | |
4be44fcd LB |
1822 | ACPI_DEVICE_NOTIFY, |
1823 | acpi_video_bus_notify); | |
1da177e4 LT |
1824 | if (ACPI_FAILURE(status)) |
1825 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1826 | "Error removing notify handler\n")); |
1da177e4 LT |
1827 | |
1828 | acpi_video_bus_put_devices(video); | |
1829 | acpi_video_bus_remove_fs(device); | |
1830 | ||
6044ec88 | 1831 | kfree(video->attached_array); |
1da177e4 LT |
1832 | kfree(video); |
1833 | ||
1834 | return_VALUE(0); | |
1835 | } | |
1836 | ||
1da177e4 | 1837 | static int |
4be44fcd | 1838 | acpi_video_bus_match(struct acpi_device *device, struct acpi_driver *driver) |
1da177e4 | 1839 | { |
4be44fcd LB |
1840 | acpi_handle h_dummy1; |
1841 | acpi_handle h_dummy2; | |
1842 | acpi_handle h_dummy3; | |
1da177e4 LT |
1843 | |
1844 | ACPI_FUNCTION_TRACE("acpi_video_bus_match"); | |
1845 | ||
1846 | if (!device || !driver) | |
1847 | return_VALUE(-EINVAL); | |
1848 | ||
1849 | /* Since there is no HID, CID for ACPI Video drivers, we have | |
1850 | * to check well known required nodes for each feature we support. | |
1851 | */ | |
1852 | ||
1853 | /* Does this device able to support video switching ? */ | |
1854 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) && | |
1855 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2))) | |
1856 | return_VALUE(0); | |
1857 | ||
1858 | /* Does this device able to retrieve a video ROM ? */ | |
1859 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1))) | |
1860 | return_VALUE(0); | |
1861 | ||
1862 | /* Does this device able to configure which video head to be POSTed ? */ | |
1863 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) && | |
1864 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) && | |
1865 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3))) | |
1866 | return_VALUE(0); | |
1867 | ||
1da177e4 LT |
1868 | return_VALUE(-ENODEV); |
1869 | } | |
1870 | ||
4be44fcd | 1871 | static int __init acpi_video_init(void) |
1da177e4 | 1872 | { |
4be44fcd | 1873 | int result = 0; |
1da177e4 LT |
1874 | |
1875 | ACPI_FUNCTION_TRACE("acpi_video_init"); | |
1876 | ||
1877 | /* | |
4be44fcd LB |
1878 | acpi_dbg_level = 0xFFFFFFFF; |
1879 | acpi_dbg_layer = 0x08000000; | |
1880 | */ | |
1da177e4 LT |
1881 | |
1882 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1883 | if (!acpi_video_dir) | |
1884 | return_VALUE(-ENODEV); | |
1885 | acpi_video_dir->owner = THIS_MODULE; | |
1886 | ||
1887 | result = acpi_bus_register_driver(&acpi_video_bus); | |
1888 | if (result < 0) { | |
1889 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1890 | return_VALUE(-ENODEV); | |
1891 | } | |
1892 | ||
1893 | return_VALUE(0); | |
1894 | } | |
1895 | ||
4be44fcd | 1896 | static void __exit acpi_video_exit(void) |
1da177e4 LT |
1897 | { |
1898 | ACPI_FUNCTION_TRACE("acpi_video_exit"); | |
1899 | ||
1900 | acpi_bus_unregister_driver(&acpi_video_bus); | |
1901 | ||
1902 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1903 | ||
1904 | return_VOID; | |
1905 | } | |
1906 | ||
1907 | module_init(acpi_video_init); | |
1908 | module_exit(acpi_video_exit); |