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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 { | |
e6afa0de | 120 | struct acpi_device *device; |
4be44fcd | 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 | unsigned long device_id; |
159 | struct acpi_video_device_flags flags; | |
160 | struct acpi_video_device_cap cap; | |
161 | struct list_head entry; | |
162 | struct acpi_video_bus *video; | |
163 | struct acpi_device *dev; | |
1da177e4 LT |
164 | struct acpi_video_device_brightness *brightness; |
165 | }; | |
166 | ||
1da177e4 LT |
167 | /* bus */ |
168 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
169 | static struct file_operations acpi_video_bus_info_fops = { | |
4be44fcd LB |
170 | .open = acpi_video_bus_info_open_fs, |
171 | .read = seq_read, | |
172 | .llseek = seq_lseek, | |
173 | .release = single_release, | |
1da177e4 LT |
174 | }; |
175 | ||
176 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
177 | static struct file_operations acpi_video_bus_ROM_fops = { | |
4be44fcd LB |
178 | .open = acpi_video_bus_ROM_open_fs, |
179 | .read = seq_read, | |
180 | .llseek = seq_lseek, | |
181 | .release = single_release, | |
1da177e4 LT |
182 | }; |
183 | ||
4be44fcd LB |
184 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
185 | struct file *file); | |
1da177e4 | 186 | static struct file_operations acpi_video_bus_POST_info_fops = { |
4be44fcd LB |
187 | .open = acpi_video_bus_POST_info_open_fs, |
188 | .read = seq_read, | |
189 | .llseek = seq_lseek, | |
190 | .release = single_release, | |
1da177e4 LT |
191 | }; |
192 | ||
193 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
194 | static struct file_operations acpi_video_bus_POST_fops = { | |
4be44fcd LB |
195 | .open = acpi_video_bus_POST_open_fs, |
196 | .read = seq_read, | |
197 | .llseek = seq_lseek, | |
198 | .release = single_release, | |
1da177e4 LT |
199 | }; |
200 | ||
1da177e4 LT |
201 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
202 | static struct file_operations acpi_video_bus_DOS_fops = { | |
4be44fcd LB |
203 | .open = acpi_video_bus_DOS_open_fs, |
204 | .read = seq_read, | |
205 | .llseek = seq_lseek, | |
206 | .release = single_release, | |
1da177e4 LT |
207 | }; |
208 | ||
209 | /* device */ | |
4be44fcd LB |
210 | static int acpi_video_device_info_open_fs(struct inode *inode, |
211 | struct file *file); | |
1da177e4 | 212 | static struct file_operations acpi_video_device_info_fops = { |
4be44fcd LB |
213 | .open = acpi_video_device_info_open_fs, |
214 | .read = seq_read, | |
215 | .llseek = seq_lseek, | |
216 | .release = single_release, | |
1da177e4 LT |
217 | }; |
218 | ||
4be44fcd LB |
219 | static int acpi_video_device_state_open_fs(struct inode *inode, |
220 | struct file *file); | |
1da177e4 | 221 | static struct file_operations acpi_video_device_state_fops = { |
4be44fcd LB |
222 | .open = acpi_video_device_state_open_fs, |
223 | .read = seq_read, | |
224 | .llseek = seq_lseek, | |
225 | .release = single_release, | |
1da177e4 LT |
226 | }; |
227 | ||
4be44fcd LB |
228 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
229 | struct file *file); | |
1da177e4 | 230 | static struct file_operations acpi_video_device_brightness_fops = { |
4be44fcd LB |
231 | .open = acpi_video_device_brightness_open_fs, |
232 | .read = seq_read, | |
233 | .llseek = seq_lseek, | |
234 | .release = single_release, | |
1da177e4 LT |
235 | }; |
236 | ||
4be44fcd LB |
237 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
238 | struct file *file); | |
1da177e4 | 239 | static struct file_operations acpi_video_device_EDID_fops = { |
4be44fcd LB |
240 | .open = acpi_video_device_EDID_open_fs, |
241 | .read = seq_read, | |
242 | .llseek = seq_lseek, | |
243 | .release = single_release, | |
1da177e4 LT |
244 | }; |
245 | ||
4be44fcd | 246 | static char device_decode[][30] = { |
1da177e4 LT |
247 | "motherboard VGA device", |
248 | "PCI VGA device", | |
249 | "AGP VGA device", | |
250 | "UNKNOWN", | |
251 | }; | |
252 | ||
4be44fcd LB |
253 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
254 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
255 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
256 | struct acpi_video_device *device); | |
1da177e4 | 257 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
4be44fcd LB |
258 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event); |
259 | static int acpi_video_get_next_level(struct acpi_video_device *device, | |
260 | u32 level_current, u32 event); | |
261 | static void acpi_video_switch_brightness(struct acpi_video_device *device, | |
262 | int event); | |
1da177e4 LT |
263 | |
264 | /* -------------------------------------------------------------------------- | |
265 | Video Management | |
266 | -------------------------------------------------------------------------- */ | |
267 | ||
268 | /* device */ | |
269 | ||
270 | static int | |
4be44fcd | 271 | acpi_video_device_query(struct acpi_video_device *device, unsigned long *state) |
1da177e4 | 272 | { |
4be44fcd | 273 | int status; |
90130268 PM |
274 | |
275 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 276 | |
d550d98d | 277 | return status; |
1da177e4 LT |
278 | } |
279 | ||
280 | static int | |
4be44fcd LB |
281 | acpi_video_device_get_state(struct acpi_video_device *device, |
282 | unsigned long *state) | |
1da177e4 | 283 | { |
4be44fcd | 284 | int status; |
1da177e4 | 285 | |
90130268 | 286 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 287 | |
d550d98d | 288 | return status; |
1da177e4 LT |
289 | } |
290 | ||
291 | static int | |
4be44fcd | 292 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 293 | { |
4be44fcd LB |
294 | int status; |
295 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
296 | struct acpi_object_list args = { 1, &arg0 }; | |
824b558b | 297 | unsigned long ret; |
1da177e4 | 298 | |
1da177e4 LT |
299 | |
300 | arg0.integer.value = state; | |
90130268 | 301 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 302 | |
d550d98d | 303 | return status; |
1da177e4 LT |
304 | } |
305 | ||
306 | static int | |
4be44fcd LB |
307 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
308 | union acpi_object **levels) | |
1da177e4 | 309 | { |
4be44fcd LB |
310 | int status; |
311 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
312 | union acpi_object *obj; | |
1da177e4 | 313 | |
1da177e4 LT |
314 | |
315 | *levels = NULL; | |
316 | ||
90130268 | 317 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 318 | if (!ACPI_SUCCESS(status)) |
d550d98d | 319 | return status; |
4be44fcd | 320 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 321 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 322 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
323 | status = -EFAULT; |
324 | goto err; | |
325 | } | |
326 | ||
327 | *levels = obj; | |
328 | ||
d550d98d | 329 | return 0; |
1da177e4 | 330 | |
4be44fcd | 331 | err: |
6044ec88 | 332 | kfree(buffer.pointer); |
1da177e4 | 333 | |
d550d98d | 334 | return status; |
1da177e4 LT |
335 | } |
336 | ||
337 | static int | |
4be44fcd | 338 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 339 | { |
4be44fcd LB |
340 | int status; |
341 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
342 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 343 | |
1da177e4 LT |
344 | |
345 | arg0.integer.value = level; | |
90130268 | 346 | status = acpi_evaluate_object(device->dev->handle, "_BCM", &args, NULL); |
1da177e4 LT |
347 | |
348 | printk(KERN_DEBUG "set_level status: %x\n", status); | |
d550d98d | 349 | return status; |
1da177e4 LT |
350 | } |
351 | ||
352 | static int | |
4be44fcd LB |
353 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
354 | unsigned long *level) | |
1da177e4 | 355 | { |
4be44fcd | 356 | int status; |
1da177e4 | 357 | |
90130268 | 358 | status = acpi_evaluate_integer(device->dev->handle, "_BQC", NULL, level); |
1da177e4 | 359 | |
d550d98d | 360 | return status; |
1da177e4 LT |
361 | } |
362 | ||
363 | static int | |
4be44fcd LB |
364 | acpi_video_device_EDID(struct acpi_video_device *device, |
365 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 366 | { |
4be44fcd LB |
367 | int status; |
368 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
369 | union acpi_object *obj; | |
370 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
371 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 372 | |
1da177e4 LT |
373 | |
374 | *edid = NULL; | |
375 | ||
376 | if (!device) | |
d550d98d | 377 | return -ENODEV; |
1da177e4 LT |
378 | if (length == 128) |
379 | arg0.integer.value = 1; | |
380 | else if (length == 256) | |
381 | arg0.integer.value = 2; | |
382 | else | |
d550d98d | 383 | return -EINVAL; |
1da177e4 | 384 | |
90130268 | 385 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 386 | if (ACPI_FAILURE(status)) |
d550d98d | 387 | return -ENODEV; |
1da177e4 | 388 | |
4be44fcd | 389 | obj = (union acpi_object *)buffer.pointer; |
1da177e4 LT |
390 | |
391 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
392 | *edid = obj; | |
393 | else { | |
6468463a | 394 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
395 | status = -EFAULT; |
396 | kfree(obj); | |
397 | } | |
398 | ||
d550d98d | 399 | return status; |
1da177e4 LT |
400 | } |
401 | ||
1da177e4 LT |
402 | /* bus */ |
403 | ||
404 | static int | |
4be44fcd | 405 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 406 | { |
4be44fcd LB |
407 | int status; |
408 | unsigned long tmp; | |
409 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
410 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 411 | |
1da177e4 LT |
412 | |
413 | arg0.integer.value = option; | |
414 | ||
90130268 | 415 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 416 | if (ACPI_SUCCESS(status)) |
4be44fcd | 417 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 418 | |
d550d98d | 419 | return status; |
1da177e4 LT |
420 | } |
421 | ||
422 | static int | |
4be44fcd | 423 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) |
1da177e4 LT |
424 | { |
425 | int status; | |
426 | ||
90130268 | 427 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 428 | |
d550d98d | 429 | return status; |
1da177e4 LT |
430 | } |
431 | ||
432 | static int | |
4be44fcd LB |
433 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
434 | unsigned long *options) | |
1da177e4 | 435 | { |
4be44fcd | 436 | int status; |
1da177e4 | 437 | |
90130268 | 438 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
439 | *options &= 3; |
440 | ||
d550d98d | 441 | return status; |
1da177e4 LT |
442 | } |
443 | ||
444 | /* | |
445 | * Arg: | |
446 | * video : video bus device pointer | |
447 | * bios_flag : | |
448 | * 0. The system BIOS should NOT automatically switch(toggle) | |
449 | * the active display output. | |
450 | * 1. The system BIOS should automatically switch (toggle) the | |
451 | * active display output. No swich event. | |
452 | * 2. The _DGS value should be locked. | |
453 | * 3. The system BIOS should not automatically switch (toggle) the | |
454 | * active display output, but instead generate the display switch | |
455 | * event notify code. | |
456 | * lcd_flag : | |
457 | * 0. The system BIOS should automatically control the brightness level | |
458 | * of the LCD, when the power changes from AC to DC | |
459 | * 1. The system BIOS should NOT automatically control the brightness | |
460 | * level of the LCD, when the power changes from AC to DC. | |
461 | * Return Value: | |
462 | * -1 wrong arg. | |
463 | */ | |
464 | ||
465 | static int | |
4be44fcd | 466 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 467 | { |
4be44fcd LB |
468 | acpi_integer status = 0; |
469 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
470 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 471 | |
1da177e4 | 472 | |
4be44fcd | 473 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
474 | status = -1; |
475 | goto Failed; | |
476 | } | |
477 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
478 | video->dos_setting = arg0.integer.value; | |
90130268 | 479 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 480 | |
4be44fcd | 481 | Failed: |
d550d98d | 482 | return status; |
1da177e4 LT |
483 | } |
484 | ||
485 | /* | |
486 | * Arg: | |
487 | * device : video output device (LCD, CRT, ..) | |
488 | * | |
489 | * Return Value: | |
490 | * None | |
491 | * | |
492 | * Find out all required AML method defined under the output | |
493 | * device. | |
494 | */ | |
495 | ||
4be44fcd | 496 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 497 | { |
4be44fcd | 498 | acpi_integer status; |
1da177e4 LT |
499 | acpi_handle h_dummy1; |
500 | int i; | |
501 | union acpi_object *obj = NULL; | |
502 | struct acpi_video_device_brightness *br = NULL; | |
503 | ||
1da177e4 | 504 | |
4be44fcd | 505 | memset(&device->cap, 0, 4); |
1da177e4 | 506 | |
90130268 | 507 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
508 | device->cap._ADR = 1; |
509 | } | |
90130268 | 510 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 511 | device->cap._BCL = 1; |
1da177e4 | 512 | } |
90130268 | 513 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 514 | device->cap._BCM = 1; |
1da177e4 | 515 | } |
90130268 | 516 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 517 | device->cap._DDC = 1; |
1da177e4 | 518 | } |
90130268 | 519 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
520 | device->cap._DCS = 1; |
521 | } | |
90130268 | 522 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
523 | device->cap._DGS = 1; |
524 | } | |
90130268 | 525 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
526 | device->cap._DSS = 1; |
527 | } | |
528 | ||
529 | status = acpi_video_device_lcd_query_levels(device, &obj); | |
530 | ||
531 | if (obj && obj->type == ACPI_TYPE_PACKAGE && obj->package.count >= 2) { | |
532 | int count = 0; | |
533 | union acpi_object *o; | |
4be44fcd | 534 | |
d1dd0c23 | 535 | br = kmalloc(sizeof(*br), GFP_KERNEL); |
1da177e4 LT |
536 | if (!br) { |
537 | printk(KERN_ERR "can't allocate memory\n"); | |
538 | } else { | |
d1dd0c23 PM |
539 | memset(br, 0, sizeof(*br)); |
540 | br->levels = kmalloc(obj->package.count * | |
4be44fcd | 541 | sizeof *(br->levels), GFP_KERNEL); |
1da177e4 LT |
542 | if (!br->levels) |
543 | goto out; | |
544 | ||
545 | for (i = 0; i < obj->package.count; i++) { | |
4be44fcd LB |
546 | o = (union acpi_object *)&obj->package. |
547 | elements[i]; | |
1da177e4 | 548 | if (o->type != ACPI_TYPE_INTEGER) { |
6468463a | 549 | printk(KERN_ERR PREFIX "Invalid data\n"); |
1da177e4 LT |
550 | continue; |
551 | } | |
552 | br->levels[count] = (u32) o->integer.value; | |
553 | count++; | |
554 | } | |
4be44fcd | 555 | out: |
1da177e4 | 556 | if (count < 2) { |
d1dd0c23 | 557 | kfree(br->levels); |
1da177e4 LT |
558 | kfree(br); |
559 | } else { | |
560 | br->count = count; | |
561 | device->brightness = br; | |
4be44fcd LB |
562 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
563 | "found %d brightness levels\n", | |
564 | count)); | |
1da177e4 LT |
565 | } |
566 | } | |
567 | } | |
568 | ||
d1dd0c23 | 569 | kfree(obj); |
1da177e4 | 570 | |
d550d98d | 571 | return; |
1da177e4 LT |
572 | } |
573 | ||
574 | /* | |
575 | * Arg: | |
576 | * device : video output device (VGA) | |
577 | * | |
578 | * Return Value: | |
579 | * None | |
580 | * | |
581 | * Find out all required AML method defined under the video bus device. | |
582 | */ | |
583 | ||
4be44fcd | 584 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 585 | { |
4be44fcd | 586 | acpi_handle h_dummy1; |
1da177e4 | 587 | |
4be44fcd | 588 | memset(&video->cap, 0, 4); |
90130268 | 589 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
590 | video->cap._DOS = 1; |
591 | } | |
90130268 | 592 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
593 | video->cap._DOD = 1; |
594 | } | |
90130268 | 595 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
596 | video->cap._ROM = 1; |
597 | } | |
90130268 | 598 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
599 | video->cap._GPD = 1; |
600 | } | |
90130268 | 601 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
602 | video->cap._SPD = 1; |
603 | } | |
90130268 | 604 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
605 | video->cap._VPO = 1; |
606 | } | |
607 | } | |
608 | ||
609 | /* | |
610 | * Check whether the video bus device has required AML method to | |
611 | * support the desired features | |
612 | */ | |
613 | ||
4be44fcd | 614 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 615 | { |
4be44fcd | 616 | acpi_status status = -ENOENT; |
1da177e4 | 617 | |
1da177e4 LT |
618 | |
619 | if (!video) | |
d550d98d | 620 | return -EINVAL; |
1da177e4 LT |
621 | |
622 | /* Since there is no HID, CID and so on for VGA driver, we have | |
623 | * to check well known required nodes. | |
624 | */ | |
625 | ||
626 | /* Does this device able to support video switching ? */ | |
4be44fcd | 627 | if (video->cap._DOS) { |
1da177e4 LT |
628 | video->flags.multihead = 1; |
629 | status = 0; | |
630 | } | |
631 | ||
632 | /* Does this device able to retrieve a retrieve a video ROM ? */ | |
4be44fcd | 633 | if (video->cap._ROM) { |
1da177e4 LT |
634 | video->flags.rom = 1; |
635 | status = 0; | |
636 | } | |
637 | ||
638 | /* Does this device able to configure which video device to POST ? */ | |
4be44fcd | 639 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
640 | video->flags.post = 1; |
641 | status = 0; | |
642 | } | |
643 | ||
d550d98d | 644 | return status; |
1da177e4 LT |
645 | } |
646 | ||
647 | /* -------------------------------------------------------------------------- | |
648 | FS Interface (/proc) | |
649 | -------------------------------------------------------------------------- */ | |
650 | ||
4be44fcd | 651 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
652 | |
653 | /* video devices */ | |
654 | ||
4be44fcd | 655 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 656 | { |
4be44fcd LB |
657 | struct acpi_video_device *dev = |
658 | (struct acpi_video_device *)seq->private; | |
1da177e4 | 659 | |
1da177e4 LT |
660 | |
661 | if (!dev) | |
662 | goto end; | |
663 | ||
664 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
665 | seq_printf(seq, "type: "); | |
666 | if (dev->flags.crt) | |
667 | seq_printf(seq, "CRT\n"); | |
668 | else if (dev->flags.lcd) | |
669 | seq_printf(seq, "LCD\n"); | |
670 | else if (dev->flags.tvout) | |
671 | seq_printf(seq, "TVOUT\n"); | |
672 | else | |
673 | seq_printf(seq, "UNKNOWN\n"); | |
674 | ||
4be44fcd | 675 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 676 | |
4be44fcd | 677 | end: |
d550d98d | 678 | return 0; |
1da177e4 LT |
679 | } |
680 | ||
681 | static int | |
4be44fcd | 682 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
683 | { |
684 | return single_open(file, acpi_video_device_info_seq_show, | |
685 | PDE(inode)->data); | |
686 | } | |
687 | ||
4be44fcd | 688 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 689 | { |
4be44fcd LB |
690 | int status; |
691 | struct acpi_video_device *dev = | |
692 | (struct acpi_video_device *)seq->private; | |
693 | unsigned long state; | |
1da177e4 | 694 | |
1da177e4 LT |
695 | |
696 | if (!dev) | |
697 | goto end; | |
698 | ||
699 | status = acpi_video_device_get_state(dev, &state); | |
700 | seq_printf(seq, "state: "); | |
701 | if (ACPI_SUCCESS(status)) | |
702 | seq_printf(seq, "0x%02lx\n", state); | |
703 | else | |
704 | seq_printf(seq, "<not supported>\n"); | |
705 | ||
706 | status = acpi_video_device_query(dev, &state); | |
707 | seq_printf(seq, "query: "); | |
708 | if (ACPI_SUCCESS(status)) | |
709 | seq_printf(seq, "0x%02lx\n", state); | |
710 | else | |
711 | seq_printf(seq, "<not supported>\n"); | |
712 | ||
4be44fcd | 713 | end: |
d550d98d | 714 | return 0; |
1da177e4 LT |
715 | } |
716 | ||
717 | static int | |
4be44fcd | 718 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
719 | { |
720 | return single_open(file, acpi_video_device_state_seq_show, | |
721 | PDE(inode)->data); | |
722 | } | |
723 | ||
724 | static ssize_t | |
4be44fcd LB |
725 | acpi_video_device_write_state(struct file *file, |
726 | const char __user * buffer, | |
727 | size_t count, loff_t * data) | |
1da177e4 | 728 | { |
4be44fcd LB |
729 | int status; |
730 | struct seq_file *m = (struct seq_file *)file->private_data; | |
731 | struct acpi_video_device *dev = (struct acpi_video_device *)m->private; | |
732 | char str[12] = { 0 }; | |
733 | u32 state = 0; | |
1da177e4 | 734 | |
1da177e4 LT |
735 | |
736 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 737 | return -EINVAL; |
1da177e4 LT |
738 | |
739 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 740 | return -EFAULT; |
1da177e4 LT |
741 | |
742 | str[count] = 0; | |
743 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 744 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
745 | |
746 | status = acpi_video_device_set_state(dev, state); | |
747 | ||
748 | if (status) | |
d550d98d | 749 | return -EFAULT; |
1da177e4 | 750 | |
d550d98d | 751 | return count; |
1da177e4 LT |
752 | } |
753 | ||
754 | static int | |
4be44fcd | 755 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 756 | { |
4be44fcd LB |
757 | struct acpi_video_device *dev = |
758 | (struct acpi_video_device *)seq->private; | |
759 | int i; | |
1da177e4 | 760 | |
1da177e4 LT |
761 | |
762 | if (!dev || !dev->brightness) { | |
763 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 764 | return 0; |
1da177e4 LT |
765 | } |
766 | ||
767 | seq_printf(seq, "levels: "); | |
768 | for (i = 0; i < dev->brightness->count; i++) | |
769 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
770 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
771 | ||
d550d98d | 772 | return 0; |
1da177e4 LT |
773 | } |
774 | ||
775 | static int | |
4be44fcd | 776 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
777 | { |
778 | return single_open(file, acpi_video_device_brightness_seq_show, | |
779 | PDE(inode)->data); | |
780 | } | |
781 | ||
782 | static ssize_t | |
4be44fcd LB |
783 | acpi_video_device_write_brightness(struct file *file, |
784 | const char __user * buffer, | |
785 | size_t count, loff_t * data) | |
1da177e4 | 786 | { |
4be44fcd LB |
787 | struct seq_file *m = (struct seq_file *)file->private_data; |
788 | struct acpi_video_device *dev = (struct acpi_video_device *)m->private; | |
789 | char str[4] = { 0 }; | |
790 | unsigned int level = 0; | |
791 | int i; | |
1da177e4 | 792 | |
1da177e4 | 793 | |
59d399d3 | 794 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 795 | return -EINVAL; |
1da177e4 LT |
796 | |
797 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 798 | return -EFAULT; |
1da177e4 LT |
799 | |
800 | str[count] = 0; | |
801 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 802 | |
1da177e4 | 803 | if (level > 100) |
d550d98d | 804 | return -EFAULT; |
1da177e4 LT |
805 | |
806 | /* validate though the list of available levels */ | |
807 | for (i = 0; i < dev->brightness->count; i++) | |
808 | if (level == dev->brightness->levels[i]) { | |
4be44fcd LB |
809 | if (ACPI_SUCCESS |
810 | (acpi_video_device_lcd_set_level(dev, level))) | |
1da177e4 LT |
811 | dev->brightness->curr = level; |
812 | break; | |
813 | } | |
814 | ||
d550d98d | 815 | return count; |
1da177e4 LT |
816 | } |
817 | ||
4be44fcd | 818 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 819 | { |
4be44fcd LB |
820 | struct acpi_video_device *dev = |
821 | (struct acpi_video_device *)seq->private; | |
822 | int status; | |
823 | int i; | |
824 | union acpi_object *edid = NULL; | |
1da177e4 | 825 | |
1da177e4 LT |
826 | |
827 | if (!dev) | |
828 | goto out; | |
829 | ||
4be44fcd | 830 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 831 | if (ACPI_FAILURE(status)) { |
4be44fcd | 832 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
833 | } |
834 | ||
835 | if (ACPI_FAILURE(status)) { | |
836 | goto out; | |
837 | } | |
838 | ||
839 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
840 | for (i = 0; i < edid->buffer.length; i++) | |
841 | seq_putc(seq, edid->buffer.pointer[i]); | |
842 | } | |
843 | ||
4be44fcd | 844 | out: |
1da177e4 LT |
845 | if (!edid) |
846 | seq_printf(seq, "<not supported>\n"); | |
847 | else | |
848 | kfree(edid); | |
849 | ||
d550d98d | 850 | return 0; |
1da177e4 LT |
851 | } |
852 | ||
853 | static int | |
4be44fcd | 854 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
855 | { |
856 | return single_open(file, acpi_video_device_EDID_seq_show, | |
857 | PDE(inode)->data); | |
858 | } | |
859 | ||
4be44fcd | 860 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 861 | { |
4be44fcd | 862 | struct proc_dir_entry *entry = NULL; |
1da177e4 LT |
863 | struct acpi_video_device *vid_dev; |
864 | ||
1da177e4 LT |
865 | |
866 | if (!device) | |
d550d98d | 867 | return -ENODEV; |
1da177e4 | 868 | |
4be44fcd | 869 | vid_dev = (struct acpi_video_device *)acpi_driver_data(device); |
1da177e4 | 870 | if (!vid_dev) |
d550d98d | 871 | return -ENODEV; |
1da177e4 LT |
872 | |
873 | if (!acpi_device_dir(device)) { | |
874 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 875 | vid_dev->video->dir); |
1da177e4 | 876 | if (!acpi_device_dir(device)) |
d550d98d | 877 | return -ENODEV; |
1da177e4 LT |
878 | acpi_device_dir(device)->owner = THIS_MODULE; |
879 | } | |
880 | ||
881 | /* 'info' [R] */ | |
882 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
883 | if (!entry) | |
d550d98d | 884 | return -ENODEV; |
1da177e4 LT |
885 | else { |
886 | entry->proc_fops = &acpi_video_device_info_fops; | |
887 | entry->data = acpi_driver_data(device); | |
888 | entry->owner = THIS_MODULE; | |
889 | } | |
890 | ||
891 | /* 'state' [R/W] */ | |
4be44fcd LB |
892 | entry = |
893 | create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR, | |
894 | acpi_device_dir(device)); | |
1da177e4 | 895 | if (!entry) |
d550d98d | 896 | return -ENODEV; |
1da177e4 | 897 | else { |
d479e908 | 898 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1da177e4 | 899 | entry->proc_fops = &acpi_video_device_state_fops; |
1da177e4 LT |
900 | entry->data = acpi_driver_data(device); |
901 | entry->owner = THIS_MODULE; | |
902 | } | |
903 | ||
904 | /* 'brightness' [R/W] */ | |
4be44fcd LB |
905 | entry = |
906 | create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
907 | acpi_device_dir(device)); | |
1da177e4 | 908 | if (!entry) |
d550d98d | 909 | return -ENODEV; |
1da177e4 | 910 | else { |
d479e908 | 911 | acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness; |
1da177e4 | 912 | entry->proc_fops = &acpi_video_device_brightness_fops; |
1da177e4 LT |
913 | entry->data = acpi_driver_data(device); |
914 | entry->owner = THIS_MODULE; | |
915 | } | |
916 | ||
917 | /* 'EDID' [R] */ | |
918 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); | |
919 | if (!entry) | |
d550d98d | 920 | return -ENODEV; |
1da177e4 LT |
921 | else { |
922 | entry->proc_fops = &acpi_video_device_EDID_fops; | |
923 | entry->data = acpi_driver_data(device); | |
924 | entry->owner = THIS_MODULE; | |
925 | } | |
926 | ||
d550d98d | 927 | return 0; |
1da177e4 LT |
928 | } |
929 | ||
4be44fcd | 930 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
931 | { |
932 | struct acpi_video_device *vid_dev; | |
1da177e4 | 933 | |
4be44fcd | 934 | vid_dev = (struct acpi_video_device *)acpi_driver_data(device); |
1da177e4 | 935 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 936 | return -ENODEV; |
1da177e4 LT |
937 | |
938 | if (acpi_device_dir(device)) { | |
939 | remove_proc_entry("info", acpi_device_dir(device)); | |
940 | remove_proc_entry("state", acpi_device_dir(device)); | |
941 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
942 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
4be44fcd | 943 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
944 | acpi_device_dir(device) = NULL; |
945 | } | |
946 | ||
d550d98d | 947 | return 0; |
1da177e4 LT |
948 | } |
949 | ||
1da177e4 | 950 | /* video bus */ |
4be44fcd | 951 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 952 | { |
4be44fcd | 953 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1da177e4 | 954 | |
1da177e4 LT |
955 | |
956 | if (!video) | |
957 | goto end; | |
958 | ||
959 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 960 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 961 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 962 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 963 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 964 | video->flags.post ? "yes" : "no"); |
1da177e4 | 965 | |
4be44fcd | 966 | end: |
d550d98d | 967 | return 0; |
1da177e4 LT |
968 | } |
969 | ||
4be44fcd | 970 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 971 | { |
4be44fcd LB |
972 | return single_open(file, acpi_video_bus_info_seq_show, |
973 | PDE(inode)->data); | |
1da177e4 LT |
974 | } |
975 | ||
4be44fcd | 976 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 977 | { |
4be44fcd | 978 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1da177e4 | 979 | |
1da177e4 LT |
980 | |
981 | if (!video) | |
982 | goto end; | |
983 | ||
984 | printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__); | |
985 | seq_printf(seq, "<TODO>\n"); | |
986 | ||
4be44fcd | 987 | end: |
d550d98d | 988 | return 0; |
1da177e4 LT |
989 | } |
990 | ||
4be44fcd | 991 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
992 | { |
993 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
994 | } | |
995 | ||
4be44fcd | 996 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 997 | { |
4be44fcd LB |
998 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
999 | unsigned long options; | |
1000 | int status; | |
1da177e4 | 1001 | |
1da177e4 LT |
1002 | |
1003 | if (!video) | |
1004 | goto end; | |
1005 | ||
1006 | status = acpi_video_bus_POST_options(video, &options); | |
1007 | if (ACPI_SUCCESS(status)) { | |
1008 | if (!(options & 1)) { | |
4be44fcd LB |
1009 | printk(KERN_WARNING PREFIX |
1010 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1011 | printk(KERN_WARNING PREFIX | |
1012 | "This indicate a BIOS bug. Please contact the manufacturer.\n"); | |
1da177e4 LT |
1013 | } |
1014 | printk("%lx\n", options); | |
1015 | seq_printf(seq, "can POST: <intgrated video>"); | |
1016 | if (options & 2) | |
1017 | seq_printf(seq, " <PCI video>"); | |
1018 | if (options & 4) | |
1019 | seq_printf(seq, " <AGP video>"); | |
1020 | seq_putc(seq, '\n'); | |
1021 | } else | |
1022 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1023 | end: |
d550d98d | 1024 | return 0; |
1da177e4 LT |
1025 | } |
1026 | ||
1027 | static int | |
4be44fcd | 1028 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1029 | { |
4be44fcd LB |
1030 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1031 | PDE(inode)->data); | |
1da177e4 LT |
1032 | } |
1033 | ||
4be44fcd | 1034 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1035 | { |
4be44fcd LB |
1036 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1037 | int status; | |
1038 | unsigned long id; | |
1da177e4 | 1039 | |
1da177e4 LT |
1040 | |
1041 | if (!video) | |
1042 | goto end; | |
1043 | ||
4be44fcd | 1044 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1045 | if (!ACPI_SUCCESS(status)) { |
1046 | seq_printf(seq, "<not supported>\n"); | |
1047 | goto end; | |
1048 | } | |
4be44fcd | 1049 | seq_printf(seq, "device posted is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1050 | |
4be44fcd | 1051 | end: |
d550d98d | 1052 | return 0; |
1da177e4 LT |
1053 | } |
1054 | ||
4be44fcd | 1055 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1056 | { |
4be44fcd | 1057 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1da177e4 | 1058 | |
1da177e4 | 1059 | |
4be44fcd | 1060 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1061 | |
d550d98d | 1062 | return 0; |
1da177e4 LT |
1063 | } |
1064 | ||
4be44fcd | 1065 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1066 | { |
4be44fcd LB |
1067 | return single_open(file, acpi_video_bus_POST_seq_show, |
1068 | PDE(inode)->data); | |
1da177e4 LT |
1069 | } |
1070 | ||
4be44fcd | 1071 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1072 | { |
1073 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1074 | } | |
1075 | ||
1076 | static ssize_t | |
4be44fcd LB |
1077 | acpi_video_bus_write_POST(struct file *file, |
1078 | const char __user * buffer, | |
1079 | size_t count, loff_t * data) | |
1da177e4 | 1080 | { |
4be44fcd LB |
1081 | int status; |
1082 | struct seq_file *m = (struct seq_file *)file->private_data; | |
1083 | struct acpi_video_bus *video = (struct acpi_video_bus *)m->private; | |
1084 | char str[12] = { 0 }; | |
1085 | unsigned long opt, options; | |
1da177e4 | 1086 | |
1da177e4 | 1087 | |
1da177e4 | 1088 | if (!video || count + 1 > sizeof str) |
d550d98d | 1089 | return -EINVAL; |
1da177e4 LT |
1090 | |
1091 | status = acpi_video_bus_POST_options(video, &options); | |
1092 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1093 | return -EINVAL; |
1da177e4 LT |
1094 | |
1095 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1096 | return -EFAULT; |
1da177e4 LT |
1097 | |
1098 | str[count] = 0; | |
1099 | opt = strtoul(str, NULL, 0); | |
1100 | if (opt > 3) | |
d550d98d | 1101 | return -EFAULT; |
1da177e4 LT |
1102 | |
1103 | /* just in case an OEM 'forget' the motherboard... */ | |
1104 | options |= 1; | |
1105 | ||
1106 | if (options & (1ul << opt)) { | |
4be44fcd | 1107 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1108 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1109 | return -EFAULT; |
1da177e4 LT |
1110 | |
1111 | } | |
1112 | ||
d550d98d | 1113 | return count; |
1da177e4 LT |
1114 | } |
1115 | ||
1116 | static ssize_t | |
4be44fcd LB |
1117 | acpi_video_bus_write_DOS(struct file *file, |
1118 | const char __user * buffer, | |
1119 | size_t count, loff_t * data) | |
1da177e4 | 1120 | { |
4be44fcd LB |
1121 | int status; |
1122 | struct seq_file *m = (struct seq_file *)file->private_data; | |
1123 | struct acpi_video_bus *video = (struct acpi_video_bus *)m->private; | |
1124 | char str[12] = { 0 }; | |
1125 | unsigned long opt; | |
1da177e4 | 1126 | |
1da177e4 | 1127 | |
1da177e4 | 1128 | if (!video || count + 1 > sizeof str) |
d550d98d | 1129 | return -EINVAL; |
1da177e4 LT |
1130 | |
1131 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1132 | return -EFAULT; |
1da177e4 LT |
1133 | |
1134 | str[count] = 0; | |
1135 | opt = strtoul(str, NULL, 0); | |
1136 | if (opt > 7) | |
d550d98d | 1137 | return -EFAULT; |
1da177e4 | 1138 | |
4be44fcd | 1139 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1140 | |
1141 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1142 | return -EFAULT; |
1da177e4 | 1143 | |
d550d98d | 1144 | return count; |
1da177e4 LT |
1145 | } |
1146 | ||
4be44fcd | 1147 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1148 | { |
4be44fcd LB |
1149 | struct proc_dir_entry *entry = NULL; |
1150 | struct acpi_video_bus *video; | |
1da177e4 | 1151 | |
1da177e4 | 1152 | |
4be44fcd | 1153 | video = (struct acpi_video_bus *)acpi_driver_data(device); |
1da177e4 LT |
1154 | |
1155 | if (!acpi_device_dir(device)) { | |
1156 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1157 | acpi_video_dir); |
1da177e4 | 1158 | if (!acpi_device_dir(device)) |
d550d98d | 1159 | return -ENODEV; |
1da177e4 LT |
1160 | video->dir = acpi_device_dir(device); |
1161 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1162 | } | |
1163 | ||
1164 | /* 'info' [R] */ | |
1165 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1166 | if (!entry) | |
d550d98d | 1167 | return -ENODEV; |
1da177e4 LT |
1168 | else { |
1169 | entry->proc_fops = &acpi_video_bus_info_fops; | |
1170 | entry->data = acpi_driver_data(device); | |
1171 | entry->owner = THIS_MODULE; | |
1172 | } | |
1173 | ||
1174 | /* 'ROM' [R] */ | |
1175 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); | |
1176 | if (!entry) | |
d550d98d | 1177 | return -ENODEV; |
1da177e4 LT |
1178 | else { |
1179 | entry->proc_fops = &acpi_video_bus_ROM_fops; | |
1180 | entry->data = acpi_driver_data(device); | |
1181 | entry->owner = THIS_MODULE; | |
1182 | } | |
1183 | ||
1184 | /* 'POST_info' [R] */ | |
4be44fcd LB |
1185 | entry = |
1186 | create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); | |
1da177e4 | 1187 | if (!entry) |
d550d98d | 1188 | return -ENODEV; |
1da177e4 LT |
1189 | else { |
1190 | entry->proc_fops = &acpi_video_bus_POST_info_fops; | |
1191 | entry->data = acpi_driver_data(device); | |
1192 | entry->owner = THIS_MODULE; | |
1193 | } | |
1194 | ||
1195 | /* 'POST' [R/W] */ | |
4be44fcd LB |
1196 | entry = |
1197 | create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR, | |
1198 | acpi_device_dir(device)); | |
1da177e4 | 1199 | if (!entry) |
d550d98d | 1200 | return -ENODEV; |
1da177e4 | 1201 | else { |
d479e908 | 1202 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
1da177e4 | 1203 | entry->proc_fops = &acpi_video_bus_POST_fops; |
1da177e4 LT |
1204 | entry->data = acpi_driver_data(device); |
1205 | entry->owner = THIS_MODULE; | |
1206 | } | |
1207 | ||
1208 | /* 'DOS' [R/W] */ | |
4be44fcd LB |
1209 | entry = |
1210 | create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR, | |
1211 | acpi_device_dir(device)); | |
1da177e4 | 1212 | if (!entry) |
d550d98d | 1213 | return -ENODEV; |
1da177e4 | 1214 | else { |
d479e908 | 1215 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
1da177e4 | 1216 | entry->proc_fops = &acpi_video_bus_DOS_fops; |
1da177e4 LT |
1217 | entry->data = acpi_driver_data(device); |
1218 | entry->owner = THIS_MODULE; | |
1219 | } | |
1220 | ||
d550d98d | 1221 | return 0; |
1da177e4 LT |
1222 | } |
1223 | ||
4be44fcd | 1224 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1225 | { |
4be44fcd | 1226 | struct acpi_video_bus *video; |
1da177e4 | 1227 | |
1da177e4 | 1228 | |
4be44fcd | 1229 | video = (struct acpi_video_bus *)acpi_driver_data(device); |
1da177e4 LT |
1230 | |
1231 | if (acpi_device_dir(device)) { | |
1232 | remove_proc_entry("info", acpi_device_dir(device)); | |
1233 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1234 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1235 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1236 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
4be44fcd | 1237 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1238 | acpi_device_dir(device) = NULL; |
1239 | } | |
1240 | ||
d550d98d | 1241 | return 0; |
1da177e4 LT |
1242 | } |
1243 | ||
1244 | /* -------------------------------------------------------------------------- | |
1245 | Driver Interface | |
1246 | -------------------------------------------------------------------------- */ | |
1247 | ||
1248 | /* device interface */ | |
1249 | ||
1250 | static int | |
4be44fcd LB |
1251 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1252 | struct acpi_video_bus *video) | |
1da177e4 | 1253 | { |
4be44fcd | 1254 | unsigned long device_id; |
973bf491 | 1255 | int status; |
4be44fcd | 1256 | struct acpi_video_device *data; |
1da177e4 | 1257 | |
1da177e4 LT |
1258 | |
1259 | if (!device || !video) | |
d550d98d | 1260 | return -EINVAL; |
1da177e4 | 1261 | |
4be44fcd LB |
1262 | status = |
1263 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1264 | if (ACPI_SUCCESS(status)) { |
1265 | ||
1266 | data = kmalloc(sizeof(struct acpi_video_device), GFP_KERNEL); | |
1267 | if (!data) | |
d550d98d | 1268 | return -ENOMEM; |
1da177e4 LT |
1269 | |
1270 | memset(data, 0, sizeof(struct acpi_video_device)); | |
1271 | ||
1da177e4 LT |
1272 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1273 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1274 | acpi_driver_data(device) = data; | |
1275 | ||
1276 | data->device_id = device_id; | |
1277 | data->video = video; | |
1278 | data->dev = device; | |
1279 | ||
1280 | switch (device_id & 0xffff) { | |
1281 | case 0x0100: | |
1282 | data->flags.crt = 1; | |
1283 | break; | |
1284 | case 0x0400: | |
1285 | data->flags.lcd = 1; | |
1286 | break; | |
1287 | case 0x0200: | |
1288 | data->flags.tvout = 1; | |
1289 | break; | |
1290 | default: | |
1291 | data->flags.unknown = 1; | |
1292 | break; | |
1293 | } | |
4be44fcd | 1294 | |
1da177e4 LT |
1295 | acpi_video_device_bind(video, data); |
1296 | acpi_video_device_find_cap(data); | |
1297 | ||
90130268 | 1298 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1299 | ACPI_DEVICE_NOTIFY, |
1300 | acpi_video_device_notify, | |
1301 | data); | |
1da177e4 LT |
1302 | if (ACPI_FAILURE(status)) { |
1303 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1304 | "Error installing notify handler\n")); |
973bf491 YL |
1305 | if(data->brightness) |
1306 | kfree(data->brightness->levels); | |
1307 | kfree(data->brightness); | |
1308 | kfree(data); | |
1309 | return -ENODEV; | |
1da177e4 LT |
1310 | } |
1311 | ||
1312 | down(&video->sem); | |
1313 | list_add_tail(&data->entry, &video->video_device_list); | |
1314 | up(&video->sem); | |
1315 | ||
1316 | acpi_video_device_add_fs(device); | |
1317 | ||
d550d98d | 1318 | return 0; |
1da177e4 LT |
1319 | } |
1320 | ||
d550d98d | 1321 | return -ENOENT; |
1da177e4 LT |
1322 | } |
1323 | ||
1324 | /* | |
1325 | * Arg: | |
1326 | * video : video bus device | |
1327 | * | |
1328 | * Return: | |
1329 | * none | |
1330 | * | |
1331 | * Enumerate the video device list of the video bus, | |
1332 | * bind the ids with the corresponding video devices | |
1333 | * under the video bus. | |
4be44fcd | 1334 | */ |
1da177e4 | 1335 | |
4be44fcd | 1336 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1337 | { |
4be44fcd | 1338 | struct list_head *node, *next; |
1da177e4 | 1339 | list_for_each_safe(node, next, &video->video_device_list) { |
4be44fcd LB |
1340 | struct acpi_video_device *dev = |
1341 | container_of(node, struct acpi_video_device, entry); | |
1342 | acpi_video_device_bind(video, dev); | |
1da177e4 LT |
1343 | } |
1344 | } | |
1345 | ||
1346 | /* | |
1347 | * Arg: | |
1348 | * video : video bus device | |
1349 | * device : video output device under the video | |
1350 | * bus | |
1351 | * | |
1352 | * Return: | |
1353 | * none | |
1354 | * | |
1355 | * Bind the ids with the corresponding video devices | |
1356 | * under the video bus. | |
4be44fcd | 1357 | */ |
1da177e4 LT |
1358 | |
1359 | static void | |
4be44fcd LB |
1360 | acpi_video_device_bind(struct acpi_video_bus *video, |
1361 | struct acpi_video_device *device) | |
1da177e4 | 1362 | { |
4be44fcd | 1363 | int i; |
1da177e4 LT |
1364 | |
1365 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1366 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
4be44fcd LB |
1367 | |
1368 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1369 | i < video->attached_count; i++) { | |
1370 | if (device->device_id == (IDS_VAL(i) & 0xffff)) { | |
1da177e4 LT |
1371 | IDS_BIND(i) = device; |
1372 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1373 | } | |
1374 | } | |
1375 | #undef IDS_VAL | |
1376 | #undef IDS_BIND | |
1377 | } | |
1378 | ||
1379 | /* | |
1380 | * Arg: | |
1381 | * video : video bus device | |
1382 | * | |
1383 | * Return: | |
1384 | * < 0 : error | |
1385 | * | |
1386 | * Call _DOD to enumerate all devices attached to display adapter | |
1387 | * | |
4be44fcd | 1388 | */ |
1da177e4 LT |
1389 | |
1390 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1391 | { | |
4be44fcd LB |
1392 | int status; |
1393 | int count; | |
1394 | int i; | |
1da177e4 | 1395 | struct acpi_video_enumerated_device *active_device_list; |
4be44fcd LB |
1396 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1397 | union acpi_object *dod = NULL; | |
1398 | union acpi_object *obj; | |
1da177e4 | 1399 | |
90130268 | 1400 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1401 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1402 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1403 | return status; |
1da177e4 LT |
1404 | } |
1405 | ||
4be44fcd | 1406 | dod = (union acpi_object *)buffer.pointer; |
1da177e4 | 1407 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1408 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1409 | status = -EFAULT; |
1410 | goto out; | |
1411 | } | |
1412 | ||
1413 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1414 | dod->package.count)); |
1da177e4 | 1415 | |
4be44fcd LB |
1416 | active_device_list = kmalloc((1 + |
1417 | dod->package.count) * | |
1418 | sizeof(struct | |
1419 | acpi_video_enumerated_device), | |
1420 | GFP_KERNEL); | |
1da177e4 LT |
1421 | |
1422 | if (!active_device_list) { | |
1423 | status = -ENOMEM; | |
1424 | goto out; | |
1425 | } | |
1426 | ||
1427 | count = 0; | |
1428 | for (i = 0; i < dod->package.count; i++) { | |
4be44fcd | 1429 | obj = (union acpi_object *)&dod->package.elements[i]; |
1da177e4 LT |
1430 | |
1431 | if (obj->type != ACPI_TYPE_INTEGER) { | |
6468463a | 1432 | printk(KERN_ERR PREFIX "Invalid _DOD data\n"); |
4be44fcd LB |
1433 | active_device_list[i].value.int_val = |
1434 | ACPI_VIDEO_HEAD_INVALID; | |
1da177e4 LT |
1435 | } |
1436 | active_device_list[i].value.int_val = obj->integer.value; | |
1437 | active_device_list[i].bind_info = NULL; | |
4be44fcd LB |
1438 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1439 | (int)obj->integer.value)); | |
1da177e4 LT |
1440 | count++; |
1441 | } | |
1442 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1443 | ||
6044ec88 | 1444 | kfree(video->attached_array); |
4be44fcd | 1445 | |
1da177e4 LT |
1446 | video->attached_array = active_device_list; |
1447 | video->attached_count = count; | |
4be44fcd | 1448 | out: |
02438d87 | 1449 | kfree(buffer.pointer); |
d550d98d | 1450 | return status; |
1da177e4 LT |
1451 | } |
1452 | ||
1453 | /* | |
1454 | * Arg: | |
1455 | * video : video bus device | |
1456 | * event : Nontify Event | |
1457 | * | |
1458 | * Return: | |
1459 | * < 0 : error | |
1460 | * | |
1461 | * 1. Find out the current active output device. | |
1462 | * 2. Identify the next output device to switch | |
1463 | * 3. call _DSS to do actual switch. | |
4be44fcd | 1464 | */ |
1da177e4 | 1465 | |
4be44fcd | 1466 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event) |
1da177e4 | 1467 | { |
4be44fcd LB |
1468 | struct list_head *node, *next; |
1469 | struct acpi_video_device *dev = NULL; | |
1470 | struct acpi_video_device *dev_next = NULL; | |
1471 | struct acpi_video_device *dev_prev = NULL; | |
1da177e4 LT |
1472 | unsigned long state; |
1473 | int status = 0; | |
1474 | ||
1da177e4 LT |
1475 | |
1476 | list_for_each_safe(node, next, &video->video_device_list) { | |
7334571f | 1477 | dev = container_of(node, struct acpi_video_device, entry); |
1da177e4 | 1478 | status = acpi_video_device_get_state(dev, &state); |
4be44fcd LB |
1479 | if (state & 0x2) { |
1480 | dev_next = | |
1481 | container_of(node->next, struct acpi_video_device, | |
1482 | entry); | |
1483 | dev_prev = | |
1484 | container_of(node->prev, struct acpi_video_device, | |
1485 | entry); | |
1da177e4 LT |
1486 | goto out; |
1487 | } | |
1488 | } | |
1489 | dev_next = container_of(node->next, struct acpi_video_device, entry); | |
1490 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); | |
4be44fcd | 1491 | out: |
1da177e4 LT |
1492 | switch (event) { |
1493 | case ACPI_VIDEO_NOTIFY_CYCLE: | |
1494 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: | |
1495 | acpi_video_device_set_state(dev, 0); | |
1496 | acpi_video_device_set_state(dev_next, 0x80000001); | |
1497 | break; | |
1498 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: | |
1499 | acpi_video_device_set_state(dev, 0); | |
1500 | acpi_video_device_set_state(dev_prev, 0x80000001); | |
1501 | default: | |
1502 | break; | |
1503 | } | |
1504 | ||
d550d98d | 1505 | return status; |
1da177e4 LT |
1506 | } |
1507 | ||
4be44fcd LB |
1508 | static int |
1509 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1510 | u32 level_current, u32 event) | |
1da177e4 | 1511 | { |
4be44fcd | 1512 | /*Fix me */ |
1da177e4 LT |
1513 | return level_current; |
1514 | } | |
1515 | ||
1da177e4 | 1516 | static void |
4be44fcd | 1517 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 LT |
1518 | { |
1519 | unsigned long level_current, level_next; | |
1520 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1521 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1522 | acpi_video_device_lcd_set_level(device, level_next); | |
1523 | } | |
1524 | ||
1525 | static int | |
4be44fcd LB |
1526 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1527 | struct acpi_device *device) | |
1da177e4 | 1528 | { |
4be44fcd LB |
1529 | int status = 0; |
1530 | struct list_head *node, *next; | |
1da177e4 | 1531 | |
1da177e4 LT |
1532 | |
1533 | acpi_video_device_enumerate(video); | |
1534 | ||
1535 | list_for_each_safe(node, next, &device->children) { | |
4be44fcd LB |
1536 | struct acpi_device *dev = |
1537 | list_entry(node, struct acpi_device, node); | |
1da177e4 LT |
1538 | |
1539 | if (!dev) | |
1540 | continue; | |
1541 | ||
1542 | status = acpi_video_bus_get_one_device(dev, video); | |
1543 | if (ACPI_FAILURE(status)) { | |
a6fc6720 | 1544 | ACPI_EXCEPTION((AE_INFO, status, "Cant attach device")); |
1da177e4 LT |
1545 | continue; |
1546 | } | |
1547 | ||
1548 | } | |
d550d98d | 1549 | return status; |
1da177e4 LT |
1550 | } |
1551 | ||
4be44fcd | 1552 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1553 | { |
031ec77b | 1554 | acpi_status status; |
1da177e4 LT |
1555 | struct acpi_video_bus *video; |
1556 | ||
1da177e4 LT |
1557 | |
1558 | if (!device || !device->video) | |
d550d98d | 1559 | return -ENOENT; |
1da177e4 LT |
1560 | |
1561 | video = device->video; | |
1562 | ||
1563 | down(&video->sem); | |
1564 | list_del(&device->entry); | |
1565 | up(&video->sem); | |
1566 | acpi_video_device_remove_fs(device->dev); | |
1567 | ||
90130268 | 1568 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1569 | ACPI_DEVICE_NOTIFY, |
1570 | acpi_video_device_notify); | |
031ec77b | 1571 | |
d550d98d | 1572 | return 0; |
1da177e4 LT |
1573 | } |
1574 | ||
4be44fcd | 1575 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1576 | { |
4be44fcd LB |
1577 | int status; |
1578 | struct list_head *node, *next; | |
1da177e4 | 1579 | |
1da177e4 LT |
1580 | |
1581 | list_for_each_safe(node, next, &video->video_device_list) { | |
4be44fcd LB |
1582 | struct acpi_video_device *data = |
1583 | list_entry(node, struct acpi_video_device, entry); | |
1da177e4 LT |
1584 | if (!data) |
1585 | continue; | |
1586 | ||
1587 | status = acpi_video_bus_put_one_device(data); | |
4be44fcd LB |
1588 | if (ACPI_FAILURE(status)) |
1589 | printk(KERN_WARNING PREFIX | |
1590 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1591 | |
d384ea69 | 1592 | if (data->brightness) |
973bf491 | 1593 | kfree(data->brightness->levels); |
6044ec88 | 1594 | kfree(data->brightness); |
1da177e4 LT |
1595 | kfree(data); |
1596 | } | |
1597 | ||
d550d98d | 1598 | return 0; |
1da177e4 LT |
1599 | } |
1600 | ||
1601 | /* acpi_video interface */ | |
1602 | ||
4be44fcd | 1603 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1604 | { |
1605 | return acpi_video_bus_DOS(video, 1, 0); | |
1606 | } | |
1607 | ||
4be44fcd | 1608 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1609 | { |
1610 | return acpi_video_bus_DOS(video, 0, 1); | |
1611 | } | |
1612 | ||
4be44fcd | 1613 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1614 | { |
4be44fcd LB |
1615 | struct acpi_video_bus *video = (struct acpi_video_bus *)data; |
1616 | struct acpi_device *device = NULL; | |
1da177e4 | 1617 | |
1da177e4 LT |
1618 | printk("video bus notify\n"); |
1619 | ||
1620 | if (!video) | |
d550d98d | 1621 | return; |
1da177e4 | 1622 | |
e6afa0de | 1623 | device = video->device; |
1da177e4 LT |
1624 | |
1625 | switch (event) { | |
1626 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User request that a switch occur, | |
1627 | * most likely via hotkey. */ | |
1628 | acpi_bus_generate_event(device, event, 0); | |
1629 | break; | |
1630 | ||
1631 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plug or remove a video | |
1632 | * connector. */ | |
1633 | acpi_video_device_enumerate(video); | |
1634 | acpi_video_device_rebind(video); | |
1635 | acpi_video_switch_output(video, event); | |
1636 | acpi_bus_generate_event(device, event, 0); | |
1637 | break; | |
1638 | ||
4be44fcd LB |
1639 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
1640 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ | |
1641 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ | |
1da177e4 LT |
1642 | acpi_video_switch_output(video, event); |
1643 | acpi_bus_generate_event(device, event, 0); | |
1644 | break; | |
1645 | ||
1646 | default: | |
1647 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1648 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1649 | break; |
1650 | } | |
1651 | ||
d550d98d | 1652 | return; |
1da177e4 LT |
1653 | } |
1654 | ||
4be44fcd | 1655 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1656 | { |
4be44fcd LB |
1657 | struct acpi_video_device *video_device = |
1658 | (struct acpi_video_device *)data; | |
1659 | struct acpi_device *device = NULL; | |
1da177e4 | 1660 | |
1da177e4 LT |
1661 | |
1662 | printk("video device notify\n"); | |
1663 | if (!video_device) | |
d550d98d | 1664 | return; |
1da177e4 | 1665 | |
e6afa0de | 1666 | device = video_device->dev; |
1da177e4 LT |
1667 | |
1668 | switch (event) { | |
4be44fcd LB |
1669 | case ACPI_VIDEO_NOTIFY_SWITCH: /* change in status (cycle output device) */ |
1670 | case ACPI_VIDEO_NOTIFY_PROBE: /* change in status (output device status) */ | |
1da177e4 LT |
1671 | acpi_bus_generate_event(device, event, 0); |
1672 | break; | |
4be44fcd LB |
1673 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
1674 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ | |
1675 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ | |
1676 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ | |
1677 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ | |
1678 | acpi_video_switch_brightness(video_device, event); | |
1da177e4 LT |
1679 | acpi_bus_generate_event(device, event, 0); |
1680 | break; | |
1681 | default: | |
1682 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1683 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1684 | break; |
1685 | } | |
d550d98d | 1686 | return; |
1da177e4 LT |
1687 | } |
1688 | ||
4be44fcd | 1689 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1690 | { |
4be44fcd LB |
1691 | int result = 0; |
1692 | acpi_status status = 0; | |
1693 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 1694 | |
4be44fcd | 1695 | |
1da177e4 | 1696 | if (!device) |
d550d98d | 1697 | return -EINVAL; |
1da177e4 LT |
1698 | |
1699 | video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); | |
1700 | if (!video) | |
d550d98d | 1701 | return -ENOMEM; |
1da177e4 LT |
1702 | memset(video, 0, sizeof(struct acpi_video_bus)); |
1703 | ||
e6afa0de | 1704 | video->device = device; |
1da177e4 LT |
1705 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
1706 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1707 | acpi_driver_data(device) = video; | |
1708 | ||
1709 | acpi_video_bus_find_cap(video); | |
1710 | result = acpi_video_bus_check(video); | |
1711 | if (result) | |
1712 | goto end; | |
1713 | ||
1714 | result = acpi_video_bus_add_fs(device); | |
1715 | if (result) | |
1716 | goto end; | |
1717 | ||
1718 | init_MUTEX(&video->sem); | |
1719 | INIT_LIST_HEAD(&video->video_device_list); | |
1720 | ||
1721 | acpi_video_bus_get_devices(video, device); | |
1722 | acpi_video_bus_start_devices(video); | |
1723 | ||
90130268 | 1724 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1725 | ACPI_DEVICE_NOTIFY, |
1726 | acpi_video_bus_notify, video); | |
1da177e4 LT |
1727 | if (ACPI_FAILURE(status)) { |
1728 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1729 | "Error installing notify handler\n")); |
973bf491 YL |
1730 | acpi_video_bus_stop_devices(video); |
1731 | acpi_video_bus_put_devices(video); | |
1732 | kfree(video->attached_array); | |
1733 | acpi_video_bus_remove_fs(device); | |
1da177e4 LT |
1734 | result = -ENODEV; |
1735 | goto end; | |
1736 | } | |
1737 | ||
1738 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", | |
4be44fcd LB |
1739 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
1740 | video->flags.multihead ? "yes" : "no", | |
1741 | video->flags.rom ? "yes" : "no", | |
1742 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 1743 | |
4be44fcd | 1744 | end: |
973bf491 | 1745 | if (result) |
1da177e4 | 1746 | kfree(video); |
1da177e4 | 1747 | |
d550d98d | 1748 | return result; |
1da177e4 LT |
1749 | } |
1750 | ||
4be44fcd | 1751 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 1752 | { |
4be44fcd LB |
1753 | acpi_status status = 0; |
1754 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 1755 | |
1da177e4 LT |
1756 | |
1757 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 1758 | return -EINVAL; |
1da177e4 | 1759 | |
4be44fcd | 1760 | video = (struct acpi_video_bus *)acpi_driver_data(device); |
1da177e4 LT |
1761 | |
1762 | acpi_video_bus_stop_devices(video); | |
1763 | ||
90130268 | 1764 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
1765 | ACPI_DEVICE_NOTIFY, |
1766 | acpi_video_bus_notify); | |
1da177e4 LT |
1767 | |
1768 | acpi_video_bus_put_devices(video); | |
1769 | acpi_video_bus_remove_fs(device); | |
1770 | ||
6044ec88 | 1771 | kfree(video->attached_array); |
1da177e4 LT |
1772 | kfree(video); |
1773 | ||
d550d98d | 1774 | return 0; |
1da177e4 LT |
1775 | } |
1776 | ||
1da177e4 | 1777 | static int |
4be44fcd | 1778 | acpi_video_bus_match(struct acpi_device *device, struct acpi_driver *driver) |
1da177e4 | 1779 | { |
4be44fcd LB |
1780 | acpi_handle h_dummy1; |
1781 | acpi_handle h_dummy2; | |
1782 | acpi_handle h_dummy3; | |
1da177e4 | 1783 | |
1da177e4 LT |
1784 | |
1785 | if (!device || !driver) | |
d550d98d | 1786 | return -EINVAL; |
1da177e4 LT |
1787 | |
1788 | /* Since there is no HID, CID for ACPI Video drivers, we have | |
1789 | * to check well known required nodes for each feature we support. | |
1790 | */ | |
1791 | ||
1792 | /* Does this device able to support video switching ? */ | |
1793 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) && | |
1794 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2))) | |
d550d98d | 1795 | return 0; |
1da177e4 LT |
1796 | |
1797 | /* Does this device able to retrieve a video ROM ? */ | |
1798 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1))) | |
d550d98d | 1799 | return 0; |
1da177e4 LT |
1800 | |
1801 | /* Does this device able to configure which video head to be POSTed ? */ | |
1802 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) && | |
1803 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) && | |
1804 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3))) | |
d550d98d | 1805 | return 0; |
1da177e4 | 1806 | |
d550d98d | 1807 | return -ENODEV; |
1da177e4 LT |
1808 | } |
1809 | ||
4be44fcd | 1810 | static int __init acpi_video_init(void) |
1da177e4 | 1811 | { |
4be44fcd | 1812 | int result = 0; |
1da177e4 | 1813 | |
1da177e4 LT |
1814 | |
1815 | /* | |
4be44fcd LB |
1816 | acpi_dbg_level = 0xFFFFFFFF; |
1817 | acpi_dbg_layer = 0x08000000; | |
1818 | */ | |
1da177e4 LT |
1819 | |
1820 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1821 | if (!acpi_video_dir) | |
d550d98d | 1822 | return -ENODEV; |
1da177e4 LT |
1823 | acpi_video_dir->owner = THIS_MODULE; |
1824 | ||
1825 | result = acpi_bus_register_driver(&acpi_video_bus); | |
1826 | if (result < 0) { | |
1827 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 1828 | return -ENODEV; |
1da177e4 LT |
1829 | } |
1830 | ||
d550d98d | 1831 | return 0; |
1da177e4 LT |
1832 | } |
1833 | ||
4be44fcd | 1834 | static void __exit acpi_video_exit(void) |
1da177e4 | 1835 | { |
1da177e4 LT |
1836 | |
1837 | acpi_bus_unregister_driver(&acpi_video_bus); | |
1838 | ||
1839 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1840 | ||
d550d98d | 1841 | return; |
1da177e4 LT |
1842 | } |
1843 | ||
1844 | module_init(acpi_video_init); | |
1845 | module_exit(acpi_video_exit); |