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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> | |
f4715189 | 6 | * Copyright (C) 2006 Thomas Tuttle <linux-kernel@ttuttle.net> |
1da177e4 LT |
7 | * |
8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or (at | |
13 | * your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
23 | * | |
24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
25 | */ | |
26 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/types.h> | |
31 | #include <linux/list.h> | |
32 | #include <linux/proc_fs.h> | |
33 | #include <linux/seq_file.h> | |
34 | ||
35 | #include <asm/uaccess.h> | |
36 | ||
37 | #include <acpi/acpi_bus.h> | |
38 | #include <acpi/acpi_drivers.h> | |
39 | ||
40 | #define ACPI_VIDEO_COMPONENT 0x08000000 | |
41 | #define ACPI_VIDEO_CLASS "video" | |
42 | #define ACPI_VIDEO_DRIVER_NAME "ACPI Video Driver" | |
43 | #define ACPI_VIDEO_BUS_NAME "Video Bus" | |
44 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" | |
45 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 | |
46 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 | |
47 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 | |
48 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 | |
49 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 | |
50 | ||
f4715189 TT |
51 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85 |
52 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 | |
53 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 | |
54 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88 | |
55 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89 | |
1da177e4 | 56 | |
1da177e4 LT |
57 | #define ACPI_VIDEO_HEAD_INVALID (~0u - 1) |
58 | #define ACPI_VIDEO_HEAD_END (~0u) | |
59 | ||
1da177e4 | 60 | #define _COMPONENT ACPI_VIDEO_COMPONENT |
4be44fcd | 61 | ACPI_MODULE_NAME("acpi_video") |
1da177e4 | 62 | |
4be44fcd | 63 | MODULE_AUTHOR("Bruno Ducrot"); |
1da177e4 LT |
64 | MODULE_DESCRIPTION(ACPI_VIDEO_DRIVER_NAME); |
65 | MODULE_LICENSE("GPL"); | |
66 | ||
4be44fcd LB |
67 | static int acpi_video_bus_add(struct acpi_device *device); |
68 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
69 | static int acpi_video_bus_match(struct acpi_device *device, | |
70 | struct acpi_driver *driver); | |
1da177e4 LT |
71 | |
72 | static struct acpi_driver acpi_video_bus = { | |
73 | .name = ACPI_VIDEO_DRIVER_NAME, | |
74 | .class = ACPI_VIDEO_CLASS, | |
75 | .ops = { | |
76 | .add = acpi_video_bus_add, | |
77 | .remove = acpi_video_bus_remove, | |
78 | .match = acpi_video_bus_match, | |
4be44fcd | 79 | }, |
1da177e4 LT |
80 | }; |
81 | ||
82 | struct acpi_video_bus_flags { | |
4be44fcd LB |
83 | u8 multihead:1; /* can switch video heads */ |
84 | u8 rom:1; /* can retrieve a video rom */ | |
85 | u8 post:1; /* can configure the head to */ | |
86 | u8 reserved:5; | |
1da177e4 LT |
87 | }; |
88 | ||
89 | struct acpi_video_bus_cap { | |
4be44fcd LB |
90 | u8 _DOS:1; /*Enable/Disable output switching */ |
91 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
92 | u8 _ROM:1; /*Get ROM Data */ | |
93 | u8 _GPD:1; /*Get POST Device */ | |
94 | u8 _SPD:1; /*Set POST Device */ | |
95 | u8 _VPO:1; /*Video POST Options */ | |
96 | u8 reserved:2; | |
1da177e4 LT |
97 | }; |
98 | ||
4be44fcd LB |
99 | struct acpi_video_device_attrib { |
100 | u32 display_index:4; /* A zero-based instance of the Display */ | |
101 | u32 display_port_attachment:4; /*This field differenates displays type */ | |
102 | u32 display_type:4; /*Describe the specific type in use */ | |
103 | u32 vendor_specific:4; /*Chipset Vendor Specifi */ | |
104 | u32 bios_can_detect:1; /*BIOS can detect the device */ | |
105 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
106 | the VGA device. */ | |
107 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
108 | u32 reserved:10; /*Must be 0 */ | |
109 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
110 | }; |
111 | ||
112 | struct acpi_video_enumerated_device { | |
113 | union { | |
114 | u32 int_val; | |
4be44fcd | 115 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
116 | } value; |
117 | struct acpi_video_device *bind_info; | |
118 | }; | |
119 | ||
120 | struct acpi_video_bus { | |
e6afa0de | 121 | struct acpi_device *device; |
4be44fcd | 122 | u8 dos_setting; |
1da177e4 | 123 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
124 | u8 attached_count; |
125 | struct acpi_video_bus_cap cap; | |
1da177e4 | 126 | struct acpi_video_bus_flags flags; |
4be44fcd LB |
127 | struct semaphore sem; |
128 | struct list_head video_device_list; | |
129 | struct proc_dir_entry *dir; | |
1da177e4 LT |
130 | }; |
131 | ||
132 | struct acpi_video_device_flags { | |
4be44fcd LB |
133 | u8 crt:1; |
134 | u8 lcd:1; | |
135 | u8 tvout:1; | |
136 | u8 bios:1; | |
137 | u8 unknown:1; | |
138 | u8 reserved:3; | |
1da177e4 LT |
139 | }; |
140 | ||
141 | struct acpi_video_device_cap { | |
4be44fcd LB |
142 | u8 _ADR:1; /*Return the unique ID */ |
143 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
144 | u8 _BCM:1; /*Set the brightness level */ | |
145 | u8 _DDC:1; /*Return the EDID for this device */ | |
146 | u8 _DCS:1; /*Return status of output device */ | |
147 | u8 _DGS:1; /*Query graphics state */ | |
148 | u8 _DSS:1; /*Device state set */ | |
149 | u8 _reserved:1; | |
1da177e4 LT |
150 | }; |
151 | ||
152 | struct acpi_video_device_brightness { | |
4be44fcd LB |
153 | int curr; |
154 | int count; | |
155 | int *levels; | |
1da177e4 LT |
156 | }; |
157 | ||
158 | struct acpi_video_device { | |
4be44fcd LB |
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; |
90130268 PM |
275 | |
276 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 277 | |
d550d98d | 278 | return status; |
1da177e4 LT |
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 | 286 | |
90130268 | 287 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 288 | |
d550d98d | 289 | return status; |
1da177e4 LT |
290 | } |
291 | ||
292 | static int | |
4be44fcd | 293 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 294 | { |
4be44fcd LB |
295 | int status; |
296 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
297 | struct acpi_object_list args = { 1, &arg0 }; | |
824b558b | 298 | unsigned long ret; |
1da177e4 | 299 | |
1da177e4 LT |
300 | |
301 | arg0.integer.value = state; | |
90130268 | 302 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 303 | |
d550d98d | 304 | return status; |
1da177e4 LT |
305 | } |
306 | ||
307 | static int | |
4be44fcd LB |
308 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
309 | union acpi_object **levels) | |
1da177e4 | 310 | { |
4be44fcd LB |
311 | int status; |
312 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
313 | union acpi_object *obj; | |
1da177e4 | 314 | |
1da177e4 LT |
315 | |
316 | *levels = NULL; | |
317 | ||
90130268 | 318 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 319 | if (!ACPI_SUCCESS(status)) |
d550d98d | 320 | return status; |
4be44fcd | 321 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 322 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 323 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
324 | status = -EFAULT; |
325 | goto err; | |
326 | } | |
327 | ||
328 | *levels = obj; | |
329 | ||
d550d98d | 330 | return 0; |
1da177e4 | 331 | |
4be44fcd | 332 | err: |
6044ec88 | 333 | kfree(buffer.pointer); |
1da177e4 | 334 | |
d550d98d | 335 | return status; |
1da177e4 LT |
336 | } |
337 | ||
338 | static int | |
4be44fcd | 339 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 340 | { |
4be44fcd LB |
341 | int status; |
342 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
343 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 344 | |
1da177e4 LT |
345 | |
346 | arg0.integer.value = level; | |
90130268 | 347 | status = acpi_evaluate_object(device->dev->handle, "_BCM", &args, NULL); |
1da177e4 LT |
348 | |
349 | printk(KERN_DEBUG "set_level status: %x\n", status); | |
d550d98d | 350 | return status; |
1da177e4 LT |
351 | } |
352 | ||
353 | static int | |
4be44fcd LB |
354 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
355 | unsigned long *level) | |
1da177e4 | 356 | { |
4be44fcd | 357 | int status; |
1da177e4 | 358 | |
90130268 | 359 | status = acpi_evaluate_integer(device->dev->handle, "_BQC", NULL, level); |
1da177e4 | 360 | |
d550d98d | 361 | return status; |
1da177e4 LT |
362 | } |
363 | ||
364 | static int | |
4be44fcd LB |
365 | acpi_video_device_EDID(struct acpi_video_device *device, |
366 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 367 | { |
4be44fcd LB |
368 | int status; |
369 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
370 | union acpi_object *obj; | |
371 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
372 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 373 | |
1da177e4 LT |
374 | |
375 | *edid = NULL; | |
376 | ||
377 | if (!device) | |
d550d98d | 378 | return -ENODEV; |
1da177e4 LT |
379 | if (length == 128) |
380 | arg0.integer.value = 1; | |
381 | else if (length == 256) | |
382 | arg0.integer.value = 2; | |
383 | else | |
d550d98d | 384 | return -EINVAL; |
1da177e4 | 385 | |
90130268 | 386 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 387 | if (ACPI_FAILURE(status)) |
d550d98d | 388 | return -ENODEV; |
1da177e4 | 389 | |
4be44fcd | 390 | obj = (union acpi_object *)buffer.pointer; |
1da177e4 LT |
391 | |
392 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
393 | *edid = obj; | |
394 | else { | |
6468463a | 395 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
396 | status = -EFAULT; |
397 | kfree(obj); | |
398 | } | |
399 | ||
d550d98d | 400 | return status; |
1da177e4 LT |
401 | } |
402 | ||
1da177e4 LT |
403 | /* bus */ |
404 | ||
405 | static int | |
4be44fcd | 406 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 407 | { |
4be44fcd LB |
408 | int status; |
409 | unsigned long tmp; | |
410 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
411 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 412 | |
1da177e4 LT |
413 | |
414 | arg0.integer.value = option; | |
415 | ||
90130268 | 416 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 417 | if (ACPI_SUCCESS(status)) |
4be44fcd | 418 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 419 | |
d550d98d | 420 | return status; |
1da177e4 LT |
421 | } |
422 | ||
423 | static int | |
4be44fcd | 424 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) |
1da177e4 LT |
425 | { |
426 | int status; | |
427 | ||
90130268 | 428 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 429 | |
d550d98d | 430 | return status; |
1da177e4 LT |
431 | } |
432 | ||
433 | static int | |
4be44fcd LB |
434 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
435 | unsigned long *options) | |
1da177e4 | 436 | { |
4be44fcd | 437 | int status; |
1da177e4 | 438 | |
90130268 | 439 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
440 | *options &= 3; |
441 | ||
d550d98d | 442 | return status; |
1da177e4 LT |
443 | } |
444 | ||
445 | /* | |
446 | * Arg: | |
447 | * video : video bus device pointer | |
448 | * bios_flag : | |
449 | * 0. The system BIOS should NOT automatically switch(toggle) | |
450 | * the active display output. | |
451 | * 1. The system BIOS should automatically switch (toggle) the | |
452 | * active display output. No swich event. | |
453 | * 2. The _DGS value should be locked. | |
454 | * 3. The system BIOS should not automatically switch (toggle) the | |
455 | * active display output, but instead generate the display switch | |
456 | * event notify code. | |
457 | * lcd_flag : | |
458 | * 0. The system BIOS should automatically control the brightness level | |
459 | * of the LCD, when the power changes from AC to DC | |
460 | * 1. The system BIOS should NOT automatically control the brightness | |
461 | * level of the LCD, when the power changes from AC to DC. | |
462 | * Return Value: | |
463 | * -1 wrong arg. | |
464 | */ | |
465 | ||
466 | static int | |
4be44fcd | 467 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 468 | { |
4be44fcd LB |
469 | acpi_integer status = 0; |
470 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
471 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 472 | |
1da177e4 | 473 | |
4be44fcd | 474 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
475 | status = -1; |
476 | goto Failed; | |
477 | } | |
478 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
479 | video->dos_setting = arg0.integer.value; | |
90130268 | 480 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 481 | |
4be44fcd | 482 | Failed: |
d550d98d | 483 | return status; |
1da177e4 LT |
484 | } |
485 | ||
486 | /* | |
487 | * Arg: | |
488 | * device : video output device (LCD, CRT, ..) | |
489 | * | |
490 | * Return Value: | |
491 | * None | |
492 | * | |
493 | * Find out all required AML method defined under the output | |
494 | * device. | |
495 | */ | |
496 | ||
4be44fcd | 497 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 498 | { |
4be44fcd | 499 | acpi_integer status; |
1da177e4 LT |
500 | acpi_handle h_dummy1; |
501 | int i; | |
502 | union acpi_object *obj = NULL; | |
503 | struct acpi_video_device_brightness *br = NULL; | |
504 | ||
1da177e4 | 505 | |
4be44fcd | 506 | memset(&device->cap, 0, 4); |
1da177e4 | 507 | |
90130268 | 508 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
509 | device->cap._ADR = 1; |
510 | } | |
90130268 | 511 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 512 | device->cap._BCL = 1; |
1da177e4 | 513 | } |
90130268 | 514 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 515 | device->cap._BCM = 1; |
1da177e4 | 516 | } |
90130268 | 517 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 518 | device->cap._DDC = 1; |
1da177e4 | 519 | } |
90130268 | 520 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
521 | device->cap._DCS = 1; |
522 | } | |
90130268 | 523 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
524 | device->cap._DGS = 1; |
525 | } | |
90130268 | 526 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
527 | device->cap._DSS = 1; |
528 | } | |
529 | ||
530 | status = acpi_video_device_lcd_query_levels(device, &obj); | |
531 | ||
532 | if (obj && obj->type == ACPI_TYPE_PACKAGE && obj->package.count >= 2) { | |
533 | int count = 0; | |
534 | union acpi_object *o; | |
4be44fcd | 535 | |
d1dd0c23 | 536 | br = kmalloc(sizeof(*br), GFP_KERNEL); |
1da177e4 LT |
537 | if (!br) { |
538 | printk(KERN_ERR "can't allocate memory\n"); | |
539 | } else { | |
d1dd0c23 PM |
540 | memset(br, 0, sizeof(*br)); |
541 | br->levels = kmalloc(obj->package.count * | |
4be44fcd | 542 | sizeof *(br->levels), GFP_KERNEL); |
1da177e4 LT |
543 | if (!br->levels) |
544 | goto out; | |
545 | ||
546 | for (i = 0; i < obj->package.count; i++) { | |
4be44fcd LB |
547 | o = (union acpi_object *)&obj->package. |
548 | elements[i]; | |
1da177e4 | 549 | if (o->type != ACPI_TYPE_INTEGER) { |
6468463a | 550 | printk(KERN_ERR PREFIX "Invalid data\n"); |
1da177e4 LT |
551 | continue; |
552 | } | |
553 | br->levels[count] = (u32) o->integer.value; | |
554 | count++; | |
555 | } | |
4be44fcd | 556 | out: |
1da177e4 | 557 | if (count < 2) { |
d1dd0c23 | 558 | kfree(br->levels); |
1da177e4 LT |
559 | kfree(br); |
560 | } else { | |
561 | br->count = count; | |
562 | device->brightness = br; | |
4be44fcd LB |
563 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
564 | "found %d brightness levels\n", | |
565 | count)); | |
1da177e4 LT |
566 | } |
567 | } | |
568 | } | |
569 | ||
d1dd0c23 | 570 | kfree(obj); |
1da177e4 | 571 | |
d550d98d | 572 | return; |
1da177e4 LT |
573 | } |
574 | ||
575 | /* | |
576 | * Arg: | |
577 | * device : video output device (VGA) | |
578 | * | |
579 | * Return Value: | |
580 | * None | |
581 | * | |
582 | * Find out all required AML method defined under the video bus device. | |
583 | */ | |
584 | ||
4be44fcd | 585 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 586 | { |
4be44fcd | 587 | acpi_handle h_dummy1; |
1da177e4 | 588 | |
4be44fcd | 589 | memset(&video->cap, 0, 4); |
90130268 | 590 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
591 | video->cap._DOS = 1; |
592 | } | |
90130268 | 593 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
594 | video->cap._DOD = 1; |
595 | } | |
90130268 | 596 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
597 | video->cap._ROM = 1; |
598 | } | |
90130268 | 599 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
600 | video->cap._GPD = 1; |
601 | } | |
90130268 | 602 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
603 | video->cap._SPD = 1; |
604 | } | |
90130268 | 605 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
606 | video->cap._VPO = 1; |
607 | } | |
608 | } | |
609 | ||
610 | /* | |
611 | * Check whether the video bus device has required AML method to | |
612 | * support the desired features | |
613 | */ | |
614 | ||
4be44fcd | 615 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 616 | { |
4be44fcd | 617 | acpi_status status = -ENOENT; |
1da177e4 | 618 | |
1da177e4 LT |
619 | |
620 | if (!video) | |
d550d98d | 621 | return -EINVAL; |
1da177e4 LT |
622 | |
623 | /* Since there is no HID, CID and so on for VGA driver, we have | |
624 | * to check well known required nodes. | |
625 | */ | |
626 | ||
627 | /* Does this device able to support video switching ? */ | |
4be44fcd | 628 | if (video->cap._DOS) { |
1da177e4 LT |
629 | video->flags.multihead = 1; |
630 | status = 0; | |
631 | } | |
632 | ||
633 | /* Does this device able to retrieve a retrieve a video ROM ? */ | |
4be44fcd | 634 | if (video->cap._ROM) { |
1da177e4 LT |
635 | video->flags.rom = 1; |
636 | status = 0; | |
637 | } | |
638 | ||
639 | /* Does this device able to configure which video device to POST ? */ | |
4be44fcd | 640 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
641 | video->flags.post = 1; |
642 | status = 0; | |
643 | } | |
644 | ||
d550d98d | 645 | return status; |
1da177e4 LT |
646 | } |
647 | ||
648 | /* -------------------------------------------------------------------------- | |
649 | FS Interface (/proc) | |
650 | -------------------------------------------------------------------------- */ | |
651 | ||
4be44fcd | 652 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
653 | |
654 | /* video devices */ | |
655 | ||
4be44fcd | 656 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 657 | { |
4be44fcd LB |
658 | struct acpi_video_device *dev = |
659 | (struct acpi_video_device *)seq->private; | |
1da177e4 | 660 | |
1da177e4 LT |
661 | |
662 | if (!dev) | |
663 | goto end; | |
664 | ||
665 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
666 | seq_printf(seq, "type: "); | |
667 | if (dev->flags.crt) | |
668 | seq_printf(seq, "CRT\n"); | |
669 | else if (dev->flags.lcd) | |
670 | seq_printf(seq, "LCD\n"); | |
671 | else if (dev->flags.tvout) | |
672 | seq_printf(seq, "TVOUT\n"); | |
673 | else | |
674 | seq_printf(seq, "UNKNOWN\n"); | |
675 | ||
4be44fcd | 676 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 677 | |
4be44fcd | 678 | end: |
d550d98d | 679 | return 0; |
1da177e4 LT |
680 | } |
681 | ||
682 | static int | |
4be44fcd | 683 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
684 | { |
685 | return single_open(file, acpi_video_device_info_seq_show, | |
686 | PDE(inode)->data); | |
687 | } | |
688 | ||
4be44fcd | 689 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 690 | { |
4be44fcd LB |
691 | int status; |
692 | struct acpi_video_device *dev = | |
693 | (struct acpi_video_device *)seq->private; | |
694 | unsigned long state; | |
1da177e4 | 695 | |
1da177e4 LT |
696 | |
697 | if (!dev) | |
698 | goto end; | |
699 | ||
700 | status = acpi_video_device_get_state(dev, &state); | |
701 | seq_printf(seq, "state: "); | |
702 | if (ACPI_SUCCESS(status)) | |
703 | seq_printf(seq, "0x%02lx\n", state); | |
704 | else | |
705 | seq_printf(seq, "<not supported>\n"); | |
706 | ||
707 | status = acpi_video_device_query(dev, &state); | |
708 | seq_printf(seq, "query: "); | |
709 | if (ACPI_SUCCESS(status)) | |
710 | seq_printf(seq, "0x%02lx\n", state); | |
711 | else | |
712 | seq_printf(seq, "<not supported>\n"); | |
713 | ||
4be44fcd | 714 | end: |
d550d98d | 715 | return 0; |
1da177e4 LT |
716 | } |
717 | ||
718 | static int | |
4be44fcd | 719 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
720 | { |
721 | return single_open(file, acpi_video_device_state_seq_show, | |
722 | PDE(inode)->data); | |
723 | } | |
724 | ||
725 | static ssize_t | |
4be44fcd LB |
726 | acpi_video_device_write_state(struct file *file, |
727 | const char __user * buffer, | |
728 | size_t count, loff_t * data) | |
1da177e4 | 729 | { |
4be44fcd LB |
730 | int status; |
731 | struct seq_file *m = (struct seq_file *)file->private_data; | |
732 | struct acpi_video_device *dev = (struct acpi_video_device *)m->private; | |
733 | char str[12] = { 0 }; | |
734 | u32 state = 0; | |
1da177e4 | 735 | |
1da177e4 LT |
736 | |
737 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 738 | return -EINVAL; |
1da177e4 LT |
739 | |
740 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 741 | return -EFAULT; |
1da177e4 LT |
742 | |
743 | str[count] = 0; | |
744 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 745 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
746 | |
747 | status = acpi_video_device_set_state(dev, state); | |
748 | ||
749 | if (status) | |
d550d98d | 750 | return -EFAULT; |
1da177e4 | 751 | |
d550d98d | 752 | return count; |
1da177e4 LT |
753 | } |
754 | ||
755 | static int | |
4be44fcd | 756 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 757 | { |
4be44fcd LB |
758 | struct acpi_video_device *dev = |
759 | (struct acpi_video_device *)seq->private; | |
760 | int i; | |
1da177e4 | 761 | |
1da177e4 LT |
762 | |
763 | if (!dev || !dev->brightness) { | |
764 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 765 | return 0; |
1da177e4 LT |
766 | } |
767 | ||
768 | seq_printf(seq, "levels: "); | |
769 | for (i = 0; i < dev->brightness->count; i++) | |
770 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
771 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
772 | ||
d550d98d | 773 | return 0; |
1da177e4 LT |
774 | } |
775 | ||
776 | static int | |
4be44fcd | 777 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
778 | { |
779 | return single_open(file, acpi_video_device_brightness_seq_show, | |
780 | PDE(inode)->data); | |
781 | } | |
782 | ||
783 | static ssize_t | |
4be44fcd LB |
784 | acpi_video_device_write_brightness(struct file *file, |
785 | const char __user * buffer, | |
786 | size_t count, loff_t * data) | |
1da177e4 | 787 | { |
4be44fcd LB |
788 | struct seq_file *m = (struct seq_file *)file->private_data; |
789 | struct acpi_video_device *dev = (struct acpi_video_device *)m->private; | |
790 | char str[4] = { 0 }; | |
791 | unsigned int level = 0; | |
792 | int i; | |
1da177e4 | 793 | |
1da177e4 | 794 | |
59d399d3 | 795 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 796 | return -EINVAL; |
1da177e4 LT |
797 | |
798 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 799 | return -EFAULT; |
1da177e4 LT |
800 | |
801 | str[count] = 0; | |
802 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 803 | |
1da177e4 | 804 | if (level > 100) |
d550d98d | 805 | return -EFAULT; |
1da177e4 LT |
806 | |
807 | /* validate though the list of available levels */ | |
808 | for (i = 0; i < dev->brightness->count; i++) | |
809 | if (level == dev->brightness->levels[i]) { | |
4be44fcd LB |
810 | if (ACPI_SUCCESS |
811 | (acpi_video_device_lcd_set_level(dev, level))) | |
1da177e4 LT |
812 | dev->brightness->curr = level; |
813 | break; | |
814 | } | |
815 | ||
d550d98d | 816 | return count; |
1da177e4 LT |
817 | } |
818 | ||
4be44fcd | 819 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 820 | { |
4be44fcd LB |
821 | struct acpi_video_device *dev = |
822 | (struct acpi_video_device *)seq->private; | |
823 | int status; | |
824 | int i; | |
825 | union acpi_object *edid = NULL; | |
1da177e4 | 826 | |
1da177e4 LT |
827 | |
828 | if (!dev) | |
829 | goto out; | |
830 | ||
4be44fcd | 831 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 832 | if (ACPI_FAILURE(status)) { |
4be44fcd | 833 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
834 | } |
835 | ||
836 | if (ACPI_FAILURE(status)) { | |
837 | goto out; | |
838 | } | |
839 | ||
840 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
841 | for (i = 0; i < edid->buffer.length; i++) | |
842 | seq_putc(seq, edid->buffer.pointer[i]); | |
843 | } | |
844 | ||
4be44fcd | 845 | out: |
1da177e4 LT |
846 | if (!edid) |
847 | seq_printf(seq, "<not supported>\n"); | |
848 | else | |
849 | kfree(edid); | |
850 | ||
d550d98d | 851 | return 0; |
1da177e4 LT |
852 | } |
853 | ||
854 | static int | |
4be44fcd | 855 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
856 | { |
857 | return single_open(file, acpi_video_device_EDID_seq_show, | |
858 | PDE(inode)->data); | |
859 | } | |
860 | ||
4be44fcd | 861 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 862 | { |
4be44fcd | 863 | struct proc_dir_entry *entry = NULL; |
1da177e4 LT |
864 | struct acpi_video_device *vid_dev; |
865 | ||
1da177e4 LT |
866 | |
867 | if (!device) | |
d550d98d | 868 | return -ENODEV; |
1da177e4 | 869 | |
4be44fcd | 870 | vid_dev = (struct acpi_video_device *)acpi_driver_data(device); |
1da177e4 | 871 | if (!vid_dev) |
d550d98d | 872 | return -ENODEV; |
1da177e4 LT |
873 | |
874 | if (!acpi_device_dir(device)) { | |
875 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 876 | vid_dev->video->dir); |
1da177e4 | 877 | if (!acpi_device_dir(device)) |
d550d98d | 878 | return -ENODEV; |
1da177e4 LT |
879 | acpi_device_dir(device)->owner = THIS_MODULE; |
880 | } | |
881 | ||
882 | /* 'info' [R] */ | |
883 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
884 | if (!entry) | |
d550d98d | 885 | return -ENODEV; |
1da177e4 LT |
886 | else { |
887 | entry->proc_fops = &acpi_video_device_info_fops; | |
888 | entry->data = acpi_driver_data(device); | |
889 | entry->owner = THIS_MODULE; | |
890 | } | |
891 | ||
892 | /* 'state' [R/W] */ | |
4be44fcd LB |
893 | entry = |
894 | create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR, | |
895 | acpi_device_dir(device)); | |
1da177e4 | 896 | if (!entry) |
d550d98d | 897 | return -ENODEV; |
1da177e4 | 898 | else { |
d479e908 | 899 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1da177e4 | 900 | entry->proc_fops = &acpi_video_device_state_fops; |
1da177e4 LT |
901 | entry->data = acpi_driver_data(device); |
902 | entry->owner = THIS_MODULE; | |
903 | } | |
904 | ||
905 | /* 'brightness' [R/W] */ | |
4be44fcd LB |
906 | entry = |
907 | create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
908 | acpi_device_dir(device)); | |
1da177e4 | 909 | if (!entry) |
d550d98d | 910 | return -ENODEV; |
1da177e4 | 911 | else { |
d479e908 | 912 | acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness; |
1da177e4 | 913 | entry->proc_fops = &acpi_video_device_brightness_fops; |
1da177e4 LT |
914 | entry->data = acpi_driver_data(device); |
915 | entry->owner = THIS_MODULE; | |
916 | } | |
917 | ||
918 | /* 'EDID' [R] */ | |
919 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); | |
920 | if (!entry) | |
d550d98d | 921 | return -ENODEV; |
1da177e4 LT |
922 | else { |
923 | entry->proc_fops = &acpi_video_device_EDID_fops; | |
924 | entry->data = acpi_driver_data(device); | |
925 | entry->owner = THIS_MODULE; | |
926 | } | |
927 | ||
d550d98d | 928 | return 0; |
1da177e4 LT |
929 | } |
930 | ||
4be44fcd | 931 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
932 | { |
933 | struct acpi_video_device *vid_dev; | |
1da177e4 | 934 | |
4be44fcd | 935 | vid_dev = (struct acpi_video_device *)acpi_driver_data(device); |
1da177e4 | 936 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 937 | return -ENODEV; |
1da177e4 LT |
938 | |
939 | if (acpi_device_dir(device)) { | |
940 | remove_proc_entry("info", acpi_device_dir(device)); | |
941 | remove_proc_entry("state", acpi_device_dir(device)); | |
942 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
943 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
4be44fcd | 944 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
945 | acpi_device_dir(device) = NULL; |
946 | } | |
947 | ||
d550d98d | 948 | return 0; |
1da177e4 LT |
949 | } |
950 | ||
1da177e4 | 951 | /* video bus */ |
4be44fcd | 952 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 953 | { |
4be44fcd | 954 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1da177e4 | 955 | |
1da177e4 LT |
956 | |
957 | if (!video) | |
958 | goto end; | |
959 | ||
960 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 961 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 962 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 963 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 964 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 965 | video->flags.post ? "yes" : "no"); |
1da177e4 | 966 | |
4be44fcd | 967 | end: |
d550d98d | 968 | return 0; |
1da177e4 LT |
969 | } |
970 | ||
4be44fcd | 971 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 972 | { |
4be44fcd LB |
973 | return single_open(file, acpi_video_bus_info_seq_show, |
974 | PDE(inode)->data); | |
1da177e4 LT |
975 | } |
976 | ||
4be44fcd | 977 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 978 | { |
4be44fcd | 979 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1da177e4 | 980 | |
1da177e4 LT |
981 | |
982 | if (!video) | |
983 | goto end; | |
984 | ||
985 | printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__); | |
986 | seq_printf(seq, "<TODO>\n"); | |
987 | ||
4be44fcd | 988 | end: |
d550d98d | 989 | return 0; |
1da177e4 LT |
990 | } |
991 | ||
4be44fcd | 992 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
993 | { |
994 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
995 | } | |
996 | ||
4be44fcd | 997 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 998 | { |
4be44fcd LB |
999 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1000 | unsigned long options; | |
1001 | int status; | |
1da177e4 | 1002 | |
1da177e4 LT |
1003 | |
1004 | if (!video) | |
1005 | goto end; | |
1006 | ||
1007 | status = acpi_video_bus_POST_options(video, &options); | |
1008 | if (ACPI_SUCCESS(status)) { | |
1009 | if (!(options & 1)) { | |
4be44fcd LB |
1010 | printk(KERN_WARNING PREFIX |
1011 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1012 | printk(KERN_WARNING PREFIX | |
1013 | "This indicate a BIOS bug. Please contact the manufacturer.\n"); | |
1da177e4 LT |
1014 | } |
1015 | printk("%lx\n", options); | |
1016 | seq_printf(seq, "can POST: <intgrated video>"); | |
1017 | if (options & 2) | |
1018 | seq_printf(seq, " <PCI video>"); | |
1019 | if (options & 4) | |
1020 | seq_printf(seq, " <AGP video>"); | |
1021 | seq_putc(seq, '\n'); | |
1022 | } else | |
1023 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1024 | end: |
d550d98d | 1025 | return 0; |
1da177e4 LT |
1026 | } |
1027 | ||
1028 | static int | |
4be44fcd | 1029 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1030 | { |
4be44fcd LB |
1031 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1032 | PDE(inode)->data); | |
1da177e4 LT |
1033 | } |
1034 | ||
4be44fcd | 1035 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1036 | { |
4be44fcd LB |
1037 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1038 | int status; | |
1039 | unsigned long id; | |
1da177e4 | 1040 | |
1da177e4 LT |
1041 | |
1042 | if (!video) | |
1043 | goto end; | |
1044 | ||
4be44fcd | 1045 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1046 | if (!ACPI_SUCCESS(status)) { |
1047 | seq_printf(seq, "<not supported>\n"); | |
1048 | goto end; | |
1049 | } | |
4be44fcd | 1050 | seq_printf(seq, "device posted is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1051 | |
4be44fcd | 1052 | end: |
d550d98d | 1053 | return 0; |
1da177e4 LT |
1054 | } |
1055 | ||
4be44fcd | 1056 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1057 | { |
4be44fcd | 1058 | struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private; |
1da177e4 | 1059 | |
1da177e4 | 1060 | |
4be44fcd | 1061 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1062 | |
d550d98d | 1063 | return 0; |
1da177e4 LT |
1064 | } |
1065 | ||
4be44fcd | 1066 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1067 | { |
4be44fcd LB |
1068 | return single_open(file, acpi_video_bus_POST_seq_show, |
1069 | PDE(inode)->data); | |
1da177e4 LT |
1070 | } |
1071 | ||
4be44fcd | 1072 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1073 | { |
1074 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1075 | } | |
1076 | ||
1077 | static ssize_t | |
4be44fcd LB |
1078 | acpi_video_bus_write_POST(struct file *file, |
1079 | const char __user * buffer, | |
1080 | size_t count, loff_t * data) | |
1da177e4 | 1081 | { |
4be44fcd LB |
1082 | int status; |
1083 | struct seq_file *m = (struct seq_file *)file->private_data; | |
1084 | struct acpi_video_bus *video = (struct acpi_video_bus *)m->private; | |
1085 | char str[12] = { 0 }; | |
1086 | unsigned long opt, options; | |
1da177e4 | 1087 | |
1da177e4 | 1088 | |
1da177e4 | 1089 | if (!video || count + 1 > sizeof str) |
d550d98d | 1090 | return -EINVAL; |
1da177e4 LT |
1091 | |
1092 | status = acpi_video_bus_POST_options(video, &options); | |
1093 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1094 | return -EINVAL; |
1da177e4 LT |
1095 | |
1096 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1097 | return -EFAULT; |
1da177e4 LT |
1098 | |
1099 | str[count] = 0; | |
1100 | opt = strtoul(str, NULL, 0); | |
1101 | if (opt > 3) | |
d550d98d | 1102 | return -EFAULT; |
1da177e4 LT |
1103 | |
1104 | /* just in case an OEM 'forget' the motherboard... */ | |
1105 | options |= 1; | |
1106 | ||
1107 | if (options & (1ul << opt)) { | |
4be44fcd | 1108 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1109 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1110 | return -EFAULT; |
1da177e4 LT |
1111 | |
1112 | } | |
1113 | ||
d550d98d | 1114 | return count; |
1da177e4 LT |
1115 | } |
1116 | ||
1117 | static ssize_t | |
4be44fcd LB |
1118 | acpi_video_bus_write_DOS(struct file *file, |
1119 | const char __user * buffer, | |
1120 | size_t count, loff_t * data) | |
1da177e4 | 1121 | { |
4be44fcd LB |
1122 | int status; |
1123 | struct seq_file *m = (struct seq_file *)file->private_data; | |
1124 | struct acpi_video_bus *video = (struct acpi_video_bus *)m->private; | |
1125 | char str[12] = { 0 }; | |
1126 | unsigned long opt; | |
1da177e4 | 1127 | |
1da177e4 | 1128 | |
1da177e4 | 1129 | if (!video || count + 1 > sizeof str) |
d550d98d | 1130 | return -EINVAL; |
1da177e4 LT |
1131 | |
1132 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1133 | return -EFAULT; |
1da177e4 LT |
1134 | |
1135 | str[count] = 0; | |
1136 | opt = strtoul(str, NULL, 0); | |
1137 | if (opt > 7) | |
d550d98d | 1138 | return -EFAULT; |
1da177e4 | 1139 | |
4be44fcd | 1140 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1141 | |
1142 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1143 | return -EFAULT; |
1da177e4 | 1144 | |
d550d98d | 1145 | return count; |
1da177e4 LT |
1146 | } |
1147 | ||
4be44fcd | 1148 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1149 | { |
4be44fcd LB |
1150 | struct proc_dir_entry *entry = NULL; |
1151 | struct acpi_video_bus *video; | |
1da177e4 | 1152 | |
1da177e4 | 1153 | |
4be44fcd | 1154 | video = (struct acpi_video_bus *)acpi_driver_data(device); |
1da177e4 LT |
1155 | |
1156 | if (!acpi_device_dir(device)) { | |
1157 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1158 | acpi_video_dir); |
1da177e4 | 1159 | if (!acpi_device_dir(device)) |
d550d98d | 1160 | return -ENODEV; |
1da177e4 LT |
1161 | video->dir = acpi_device_dir(device); |
1162 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1163 | } | |
1164 | ||
1165 | /* 'info' [R] */ | |
1166 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1167 | if (!entry) | |
d550d98d | 1168 | return -ENODEV; |
1da177e4 LT |
1169 | else { |
1170 | entry->proc_fops = &acpi_video_bus_info_fops; | |
1171 | entry->data = acpi_driver_data(device); | |
1172 | entry->owner = THIS_MODULE; | |
1173 | } | |
1174 | ||
1175 | /* 'ROM' [R] */ | |
1176 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); | |
1177 | if (!entry) | |
d550d98d | 1178 | return -ENODEV; |
1da177e4 LT |
1179 | else { |
1180 | entry->proc_fops = &acpi_video_bus_ROM_fops; | |
1181 | entry->data = acpi_driver_data(device); | |
1182 | entry->owner = THIS_MODULE; | |
1183 | } | |
1184 | ||
1185 | /* 'POST_info' [R] */ | |
4be44fcd LB |
1186 | entry = |
1187 | create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); | |
1da177e4 | 1188 | if (!entry) |
d550d98d | 1189 | return -ENODEV; |
1da177e4 LT |
1190 | else { |
1191 | entry->proc_fops = &acpi_video_bus_POST_info_fops; | |
1192 | entry->data = acpi_driver_data(device); | |
1193 | entry->owner = THIS_MODULE; | |
1194 | } | |
1195 | ||
1196 | /* 'POST' [R/W] */ | |
4be44fcd LB |
1197 | entry = |
1198 | create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR, | |
1199 | acpi_device_dir(device)); | |
1da177e4 | 1200 | if (!entry) |
d550d98d | 1201 | return -ENODEV; |
1da177e4 | 1202 | else { |
d479e908 | 1203 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
1da177e4 | 1204 | entry->proc_fops = &acpi_video_bus_POST_fops; |
1da177e4 LT |
1205 | entry->data = acpi_driver_data(device); |
1206 | entry->owner = THIS_MODULE; | |
1207 | } | |
1208 | ||
1209 | /* 'DOS' [R/W] */ | |
4be44fcd LB |
1210 | entry = |
1211 | create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR, | |
1212 | acpi_device_dir(device)); | |
1da177e4 | 1213 | if (!entry) |
d550d98d | 1214 | return -ENODEV; |
1da177e4 | 1215 | else { |
d479e908 | 1216 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
1da177e4 | 1217 | entry->proc_fops = &acpi_video_bus_DOS_fops; |
1da177e4 LT |
1218 | entry->data = acpi_driver_data(device); |
1219 | entry->owner = THIS_MODULE; | |
1220 | } | |
1221 | ||
d550d98d | 1222 | return 0; |
1da177e4 LT |
1223 | } |
1224 | ||
4be44fcd | 1225 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1226 | { |
4be44fcd | 1227 | struct acpi_video_bus *video; |
1da177e4 | 1228 | |
1da177e4 | 1229 | |
4be44fcd | 1230 | video = (struct acpi_video_bus *)acpi_driver_data(device); |
1da177e4 LT |
1231 | |
1232 | if (acpi_device_dir(device)) { | |
1233 | remove_proc_entry("info", acpi_device_dir(device)); | |
1234 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1235 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1236 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1237 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
4be44fcd | 1238 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1239 | acpi_device_dir(device) = NULL; |
1240 | } | |
1241 | ||
d550d98d | 1242 | return 0; |
1da177e4 LT |
1243 | } |
1244 | ||
1245 | /* -------------------------------------------------------------------------- | |
1246 | Driver Interface | |
1247 | -------------------------------------------------------------------------- */ | |
1248 | ||
1249 | /* device interface */ | |
1250 | ||
1251 | static int | |
4be44fcd LB |
1252 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1253 | struct acpi_video_bus *video) | |
1da177e4 | 1254 | { |
4be44fcd | 1255 | unsigned long device_id; |
973bf491 | 1256 | int status; |
4be44fcd | 1257 | struct acpi_video_device *data; |
1da177e4 | 1258 | |
1da177e4 LT |
1259 | |
1260 | if (!device || !video) | |
d550d98d | 1261 | return -EINVAL; |
1da177e4 | 1262 | |
4be44fcd LB |
1263 | status = |
1264 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1265 | if (ACPI_SUCCESS(status)) { |
1266 | ||
1267 | data = kmalloc(sizeof(struct acpi_video_device), GFP_KERNEL); | |
1268 | if (!data) | |
d550d98d | 1269 | return -ENOMEM; |
1da177e4 LT |
1270 | |
1271 | memset(data, 0, sizeof(struct acpi_video_device)); | |
1272 | ||
1da177e4 LT |
1273 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1274 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1275 | acpi_driver_data(device) = data; | |
1276 | ||
1277 | data->device_id = device_id; | |
1278 | data->video = video; | |
1279 | data->dev = device; | |
1280 | ||
1281 | switch (device_id & 0xffff) { | |
1282 | case 0x0100: | |
1283 | data->flags.crt = 1; | |
1284 | break; | |
1285 | case 0x0400: | |
1286 | data->flags.lcd = 1; | |
1287 | break; | |
1288 | case 0x0200: | |
1289 | data->flags.tvout = 1; | |
1290 | break; | |
1291 | default: | |
1292 | data->flags.unknown = 1; | |
1293 | break; | |
1294 | } | |
4be44fcd | 1295 | |
1da177e4 LT |
1296 | acpi_video_device_bind(video, data); |
1297 | acpi_video_device_find_cap(data); | |
1298 | ||
90130268 | 1299 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1300 | ACPI_DEVICE_NOTIFY, |
1301 | acpi_video_device_notify, | |
1302 | data); | |
1da177e4 LT |
1303 | if (ACPI_FAILURE(status)) { |
1304 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1305 | "Error installing notify handler\n")); |
973bf491 YL |
1306 | if(data->brightness) |
1307 | kfree(data->brightness->levels); | |
1308 | kfree(data->brightness); | |
1309 | kfree(data); | |
1310 | return -ENODEV; | |
1da177e4 LT |
1311 | } |
1312 | ||
1313 | down(&video->sem); | |
1314 | list_add_tail(&data->entry, &video->video_device_list); | |
1315 | up(&video->sem); | |
1316 | ||
1317 | acpi_video_device_add_fs(device); | |
1318 | ||
d550d98d | 1319 | return 0; |
1da177e4 LT |
1320 | } |
1321 | ||
d550d98d | 1322 | return -ENOENT; |
1da177e4 LT |
1323 | } |
1324 | ||
1325 | /* | |
1326 | * Arg: | |
1327 | * video : video bus device | |
1328 | * | |
1329 | * Return: | |
1330 | * none | |
1331 | * | |
1332 | * Enumerate the video device list of the video bus, | |
1333 | * bind the ids with the corresponding video devices | |
1334 | * under the video bus. | |
4be44fcd | 1335 | */ |
1da177e4 | 1336 | |
4be44fcd | 1337 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1338 | { |
4be44fcd | 1339 | struct list_head *node, *next; |
1da177e4 | 1340 | list_for_each_safe(node, next, &video->video_device_list) { |
4be44fcd LB |
1341 | struct acpi_video_device *dev = |
1342 | container_of(node, struct acpi_video_device, entry); | |
1343 | acpi_video_device_bind(video, dev); | |
1da177e4 LT |
1344 | } |
1345 | } | |
1346 | ||
1347 | /* | |
1348 | * Arg: | |
1349 | * video : video bus device | |
1350 | * device : video output device under the video | |
1351 | * bus | |
1352 | * | |
1353 | * Return: | |
1354 | * none | |
1355 | * | |
1356 | * Bind the ids with the corresponding video devices | |
1357 | * under the video bus. | |
4be44fcd | 1358 | */ |
1da177e4 LT |
1359 | |
1360 | static void | |
4be44fcd LB |
1361 | acpi_video_device_bind(struct acpi_video_bus *video, |
1362 | struct acpi_video_device *device) | |
1da177e4 | 1363 | { |
4be44fcd | 1364 | int i; |
1da177e4 LT |
1365 | |
1366 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1367 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
4be44fcd LB |
1368 | |
1369 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1370 | i < video->attached_count; i++) { | |
1371 | if (device->device_id == (IDS_VAL(i) & 0xffff)) { | |
1da177e4 LT |
1372 | IDS_BIND(i) = device; |
1373 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1374 | } | |
1375 | } | |
1376 | #undef IDS_VAL | |
1377 | #undef IDS_BIND | |
1378 | } | |
1379 | ||
1380 | /* | |
1381 | * Arg: | |
1382 | * video : video bus device | |
1383 | * | |
1384 | * Return: | |
1385 | * < 0 : error | |
1386 | * | |
1387 | * Call _DOD to enumerate all devices attached to display adapter | |
1388 | * | |
4be44fcd | 1389 | */ |
1da177e4 LT |
1390 | |
1391 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1392 | { | |
4be44fcd LB |
1393 | int status; |
1394 | int count; | |
1395 | int i; | |
1da177e4 | 1396 | struct acpi_video_enumerated_device *active_device_list; |
4be44fcd LB |
1397 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1398 | union acpi_object *dod = NULL; | |
1399 | union acpi_object *obj; | |
1da177e4 | 1400 | |
90130268 | 1401 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1402 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1403 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1404 | return status; |
1da177e4 LT |
1405 | } |
1406 | ||
4be44fcd | 1407 | dod = (union acpi_object *)buffer.pointer; |
1da177e4 | 1408 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1409 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1410 | status = -EFAULT; |
1411 | goto out; | |
1412 | } | |
1413 | ||
1414 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1415 | dod->package.count)); |
1da177e4 | 1416 | |
4be44fcd LB |
1417 | active_device_list = kmalloc((1 + |
1418 | dod->package.count) * | |
1419 | sizeof(struct | |
1420 | acpi_video_enumerated_device), | |
1421 | GFP_KERNEL); | |
1da177e4 LT |
1422 | |
1423 | if (!active_device_list) { | |
1424 | status = -ENOMEM; | |
1425 | goto out; | |
1426 | } | |
1427 | ||
1428 | count = 0; | |
1429 | for (i = 0; i < dod->package.count; i++) { | |
4be44fcd | 1430 | obj = (union acpi_object *)&dod->package.elements[i]; |
1da177e4 LT |
1431 | |
1432 | if (obj->type != ACPI_TYPE_INTEGER) { | |
6468463a | 1433 | printk(KERN_ERR PREFIX "Invalid _DOD data\n"); |
4be44fcd LB |
1434 | active_device_list[i].value.int_val = |
1435 | ACPI_VIDEO_HEAD_INVALID; | |
1da177e4 LT |
1436 | } |
1437 | active_device_list[i].value.int_val = obj->integer.value; | |
1438 | active_device_list[i].bind_info = NULL; | |
4be44fcd LB |
1439 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1440 | (int)obj->integer.value)); | |
1da177e4 LT |
1441 | count++; |
1442 | } | |
1443 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1444 | ||
6044ec88 | 1445 | kfree(video->attached_array); |
4be44fcd | 1446 | |
1da177e4 LT |
1447 | video->attached_array = active_device_list; |
1448 | video->attached_count = count; | |
4be44fcd | 1449 | out: |
02438d87 | 1450 | kfree(buffer.pointer); |
d550d98d | 1451 | return status; |
1da177e4 LT |
1452 | } |
1453 | ||
1454 | /* | |
1455 | * Arg: | |
1456 | * video : video bus device | |
1457 | * event : Nontify Event | |
1458 | * | |
1459 | * Return: | |
1460 | * < 0 : error | |
1461 | * | |
1462 | * 1. Find out the current active output device. | |
1463 | * 2. Identify the next output device to switch | |
1464 | * 3. call _DSS to do actual switch. | |
4be44fcd | 1465 | */ |
1da177e4 | 1466 | |
4be44fcd | 1467 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event) |
1da177e4 | 1468 | { |
4be44fcd LB |
1469 | struct list_head *node, *next; |
1470 | struct acpi_video_device *dev = NULL; | |
1471 | struct acpi_video_device *dev_next = NULL; | |
1472 | struct acpi_video_device *dev_prev = NULL; | |
1da177e4 LT |
1473 | unsigned long state; |
1474 | int status = 0; | |
1475 | ||
1da177e4 LT |
1476 | |
1477 | list_for_each_safe(node, next, &video->video_device_list) { | |
7334571f | 1478 | dev = container_of(node, struct acpi_video_device, entry); |
1da177e4 | 1479 | status = acpi_video_device_get_state(dev, &state); |
4be44fcd LB |
1480 | if (state & 0x2) { |
1481 | dev_next = | |
1482 | container_of(node->next, struct acpi_video_device, | |
1483 | entry); | |
1484 | dev_prev = | |
1485 | container_of(node->prev, struct acpi_video_device, | |
1486 | entry); | |
1da177e4 LT |
1487 | goto out; |
1488 | } | |
1489 | } | |
1490 | dev_next = container_of(node->next, struct acpi_video_device, entry); | |
1491 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); | |
4be44fcd | 1492 | out: |
1da177e4 LT |
1493 | switch (event) { |
1494 | case ACPI_VIDEO_NOTIFY_CYCLE: | |
1495 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: | |
1496 | acpi_video_device_set_state(dev, 0); | |
1497 | acpi_video_device_set_state(dev_next, 0x80000001); | |
1498 | break; | |
1499 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: | |
1500 | acpi_video_device_set_state(dev, 0); | |
1501 | acpi_video_device_set_state(dev_prev, 0x80000001); | |
1502 | default: | |
1503 | break; | |
1504 | } | |
1505 | ||
d550d98d | 1506 | return status; |
1da177e4 LT |
1507 | } |
1508 | ||
4be44fcd LB |
1509 | static int |
1510 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1511 | u32 level_current, u32 event) | |
1da177e4 | 1512 | { |
f4715189 TT |
1513 | int min, max, min_above, max_below, i, l; |
1514 | max = max_below = 0; | |
1515 | min = min_above = 255; | |
1516 | for (i = 0; i < device->brightness->count; i++) { | |
1517 | l = device->brightness->levels[i]; | |
1518 | if (l < min) | |
1519 | min = l; | |
1520 | if (l > max) | |
1521 | max = l; | |
1522 | if (l < min_above && l > level_current) | |
1523 | min_above = l; | |
1524 | if (l > max_below && l < level_current) | |
1525 | max_below = l; | |
1526 | } | |
1527 | ||
1528 | switch (event) { | |
1529 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1530 | return (level_current < max) ? min_above : min; | |
1531 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1532 | return (level_current < max) ? min_above : max; | |
1533 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1534 | return (level_current > min) ? max_below : min; | |
1535 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1536 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1537 | return 0; | |
1538 | default: | |
1539 | return level_current; | |
1540 | } | |
1da177e4 LT |
1541 | } |
1542 | ||
1da177e4 | 1543 | static void |
4be44fcd | 1544 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 LT |
1545 | { |
1546 | unsigned long level_current, level_next; | |
1547 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1548 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1549 | acpi_video_device_lcd_set_level(device, level_next); | |
1550 | } | |
1551 | ||
1552 | static int | |
4be44fcd LB |
1553 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1554 | struct acpi_device *device) | |
1da177e4 | 1555 | { |
4be44fcd LB |
1556 | int status = 0; |
1557 | struct list_head *node, *next; | |
1da177e4 | 1558 | |
1da177e4 LT |
1559 | |
1560 | acpi_video_device_enumerate(video); | |
1561 | ||
1562 | list_for_each_safe(node, next, &device->children) { | |
4be44fcd LB |
1563 | struct acpi_device *dev = |
1564 | list_entry(node, struct acpi_device, node); | |
1da177e4 LT |
1565 | |
1566 | if (!dev) | |
1567 | continue; | |
1568 | ||
1569 | status = acpi_video_bus_get_one_device(dev, video); | |
1570 | if (ACPI_FAILURE(status)) { | |
a6fc6720 | 1571 | ACPI_EXCEPTION((AE_INFO, status, "Cant attach device")); |
1da177e4 LT |
1572 | continue; |
1573 | } | |
1574 | ||
1575 | } | |
d550d98d | 1576 | return status; |
1da177e4 LT |
1577 | } |
1578 | ||
4be44fcd | 1579 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1580 | { |
031ec77b | 1581 | acpi_status status; |
1da177e4 LT |
1582 | struct acpi_video_bus *video; |
1583 | ||
1da177e4 LT |
1584 | |
1585 | if (!device || !device->video) | |
d550d98d | 1586 | return -ENOENT; |
1da177e4 LT |
1587 | |
1588 | video = device->video; | |
1589 | ||
1590 | down(&video->sem); | |
1591 | list_del(&device->entry); | |
1592 | up(&video->sem); | |
1593 | acpi_video_device_remove_fs(device->dev); | |
1594 | ||
90130268 | 1595 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1596 | ACPI_DEVICE_NOTIFY, |
1597 | acpi_video_device_notify); | |
031ec77b | 1598 | |
d550d98d | 1599 | return 0; |
1da177e4 LT |
1600 | } |
1601 | ||
4be44fcd | 1602 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1603 | { |
4be44fcd LB |
1604 | int status; |
1605 | struct list_head *node, *next; | |
1da177e4 | 1606 | |
1da177e4 LT |
1607 | |
1608 | list_for_each_safe(node, next, &video->video_device_list) { | |
4be44fcd LB |
1609 | struct acpi_video_device *data = |
1610 | list_entry(node, struct acpi_video_device, entry); | |
1da177e4 LT |
1611 | if (!data) |
1612 | continue; | |
1613 | ||
1614 | status = acpi_video_bus_put_one_device(data); | |
4be44fcd LB |
1615 | if (ACPI_FAILURE(status)) |
1616 | printk(KERN_WARNING PREFIX | |
1617 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1618 | |
d384ea69 | 1619 | if (data->brightness) |
973bf491 | 1620 | kfree(data->brightness->levels); |
6044ec88 | 1621 | kfree(data->brightness); |
1da177e4 LT |
1622 | kfree(data); |
1623 | } | |
1624 | ||
d550d98d | 1625 | return 0; |
1da177e4 LT |
1626 | } |
1627 | ||
1628 | /* acpi_video interface */ | |
1629 | ||
4be44fcd | 1630 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1631 | { |
1632 | return acpi_video_bus_DOS(video, 1, 0); | |
1633 | } | |
1634 | ||
4be44fcd | 1635 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1636 | { |
1637 | return acpi_video_bus_DOS(video, 0, 1); | |
1638 | } | |
1639 | ||
4be44fcd | 1640 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1641 | { |
4be44fcd LB |
1642 | struct acpi_video_bus *video = (struct acpi_video_bus *)data; |
1643 | struct acpi_device *device = NULL; | |
1da177e4 | 1644 | |
1da177e4 LT |
1645 | printk("video bus notify\n"); |
1646 | ||
1647 | if (!video) | |
d550d98d | 1648 | return; |
1da177e4 | 1649 | |
e6afa0de | 1650 | device = video->device; |
1da177e4 LT |
1651 | |
1652 | switch (event) { | |
1653 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User request that a switch occur, | |
1654 | * most likely via hotkey. */ | |
1655 | acpi_bus_generate_event(device, event, 0); | |
1656 | break; | |
1657 | ||
1658 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plug or remove a video | |
1659 | * connector. */ | |
1660 | acpi_video_device_enumerate(video); | |
1661 | acpi_video_device_rebind(video); | |
1662 | acpi_video_switch_output(video, event); | |
1663 | acpi_bus_generate_event(device, event, 0); | |
1664 | break; | |
1665 | ||
4be44fcd LB |
1666 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
1667 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ | |
1668 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ | |
1da177e4 LT |
1669 | acpi_video_switch_output(video, event); |
1670 | acpi_bus_generate_event(device, event, 0); | |
1671 | break; | |
1672 | ||
1673 | default: | |
1674 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1675 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1676 | break; |
1677 | } | |
1678 | ||
d550d98d | 1679 | return; |
1da177e4 LT |
1680 | } |
1681 | ||
4be44fcd | 1682 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1683 | { |
4be44fcd LB |
1684 | struct acpi_video_device *video_device = |
1685 | (struct acpi_video_device *)data; | |
1686 | struct acpi_device *device = NULL; | |
1da177e4 | 1687 | |
1da177e4 LT |
1688 | |
1689 | printk("video device notify\n"); | |
1690 | if (!video_device) | |
d550d98d | 1691 | return; |
1da177e4 | 1692 | |
e6afa0de | 1693 | device = video_device->dev; |
1da177e4 LT |
1694 | |
1695 | switch (event) { | |
4be44fcd LB |
1696 | case ACPI_VIDEO_NOTIFY_SWITCH: /* change in status (cycle output device) */ |
1697 | case ACPI_VIDEO_NOTIFY_PROBE: /* change in status (output device status) */ | |
1da177e4 LT |
1698 | acpi_bus_generate_event(device, event, 0); |
1699 | break; | |
4be44fcd LB |
1700 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
1701 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ | |
1702 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ | |
1703 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ | |
1704 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ | |
1705 | acpi_video_switch_brightness(video_device, event); | |
1da177e4 LT |
1706 | acpi_bus_generate_event(device, event, 0); |
1707 | break; | |
1708 | default: | |
1709 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1710 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1711 | break; |
1712 | } | |
d550d98d | 1713 | return; |
1da177e4 LT |
1714 | } |
1715 | ||
4be44fcd | 1716 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1717 | { |
4be44fcd LB |
1718 | int result = 0; |
1719 | acpi_status status = 0; | |
1720 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 1721 | |
4be44fcd | 1722 | |
1da177e4 | 1723 | if (!device) |
d550d98d | 1724 | return -EINVAL; |
1da177e4 LT |
1725 | |
1726 | video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); | |
1727 | if (!video) | |
d550d98d | 1728 | return -ENOMEM; |
1da177e4 LT |
1729 | memset(video, 0, sizeof(struct acpi_video_bus)); |
1730 | ||
e6afa0de | 1731 | video->device = device; |
1da177e4 LT |
1732 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
1733 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1734 | acpi_driver_data(device) = video; | |
1735 | ||
1736 | acpi_video_bus_find_cap(video); | |
1737 | result = acpi_video_bus_check(video); | |
1738 | if (result) | |
1739 | goto end; | |
1740 | ||
1741 | result = acpi_video_bus_add_fs(device); | |
1742 | if (result) | |
1743 | goto end; | |
1744 | ||
1745 | init_MUTEX(&video->sem); | |
1746 | INIT_LIST_HEAD(&video->video_device_list); | |
1747 | ||
1748 | acpi_video_bus_get_devices(video, device); | |
1749 | acpi_video_bus_start_devices(video); | |
1750 | ||
90130268 | 1751 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1752 | ACPI_DEVICE_NOTIFY, |
1753 | acpi_video_bus_notify, video); | |
1da177e4 LT |
1754 | if (ACPI_FAILURE(status)) { |
1755 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1756 | "Error installing notify handler\n")); |
973bf491 YL |
1757 | acpi_video_bus_stop_devices(video); |
1758 | acpi_video_bus_put_devices(video); | |
1759 | kfree(video->attached_array); | |
1760 | acpi_video_bus_remove_fs(device); | |
1da177e4 LT |
1761 | result = -ENODEV; |
1762 | goto end; | |
1763 | } | |
1764 | ||
1765 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", | |
4be44fcd LB |
1766 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
1767 | video->flags.multihead ? "yes" : "no", | |
1768 | video->flags.rom ? "yes" : "no", | |
1769 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 1770 | |
4be44fcd | 1771 | end: |
973bf491 | 1772 | if (result) |
1da177e4 | 1773 | kfree(video); |
1da177e4 | 1774 | |
d550d98d | 1775 | return result; |
1da177e4 LT |
1776 | } |
1777 | ||
4be44fcd | 1778 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 1779 | { |
4be44fcd LB |
1780 | acpi_status status = 0; |
1781 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 1782 | |
1da177e4 LT |
1783 | |
1784 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 1785 | return -EINVAL; |
1da177e4 | 1786 | |
4be44fcd | 1787 | video = (struct acpi_video_bus *)acpi_driver_data(device); |
1da177e4 LT |
1788 | |
1789 | acpi_video_bus_stop_devices(video); | |
1790 | ||
90130268 | 1791 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
1792 | ACPI_DEVICE_NOTIFY, |
1793 | acpi_video_bus_notify); | |
1da177e4 LT |
1794 | |
1795 | acpi_video_bus_put_devices(video); | |
1796 | acpi_video_bus_remove_fs(device); | |
1797 | ||
6044ec88 | 1798 | kfree(video->attached_array); |
1da177e4 LT |
1799 | kfree(video); |
1800 | ||
d550d98d | 1801 | return 0; |
1da177e4 LT |
1802 | } |
1803 | ||
1da177e4 | 1804 | static int |
4be44fcd | 1805 | acpi_video_bus_match(struct acpi_device *device, struct acpi_driver *driver) |
1da177e4 | 1806 | { |
4be44fcd LB |
1807 | acpi_handle h_dummy1; |
1808 | acpi_handle h_dummy2; | |
1809 | acpi_handle h_dummy3; | |
1da177e4 | 1810 | |
1da177e4 LT |
1811 | |
1812 | if (!device || !driver) | |
d550d98d | 1813 | return -EINVAL; |
1da177e4 LT |
1814 | |
1815 | /* Since there is no HID, CID for ACPI Video drivers, we have | |
1816 | * to check well known required nodes for each feature we support. | |
1817 | */ | |
1818 | ||
1819 | /* Does this device able to support video switching ? */ | |
1820 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) && | |
1821 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2))) | |
d550d98d | 1822 | return 0; |
1da177e4 LT |
1823 | |
1824 | /* Does this device able to retrieve a video ROM ? */ | |
1825 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1))) | |
d550d98d | 1826 | return 0; |
1da177e4 LT |
1827 | |
1828 | /* Does this device able to configure which video head to be POSTed ? */ | |
1829 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) && | |
1830 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) && | |
1831 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3))) | |
d550d98d | 1832 | return 0; |
1da177e4 | 1833 | |
d550d98d | 1834 | return -ENODEV; |
1da177e4 LT |
1835 | } |
1836 | ||
4be44fcd | 1837 | static int __init acpi_video_init(void) |
1da177e4 | 1838 | { |
4be44fcd | 1839 | int result = 0; |
1da177e4 | 1840 | |
1da177e4 LT |
1841 | |
1842 | /* | |
4be44fcd LB |
1843 | acpi_dbg_level = 0xFFFFFFFF; |
1844 | acpi_dbg_layer = 0x08000000; | |
1845 | */ | |
1da177e4 LT |
1846 | |
1847 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1848 | if (!acpi_video_dir) | |
d550d98d | 1849 | return -ENODEV; |
1da177e4 LT |
1850 | acpi_video_dir->owner = THIS_MODULE; |
1851 | ||
1852 | result = acpi_bus_register_driver(&acpi_video_bus); | |
1853 | if (result < 0) { | |
1854 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 1855 | return -ENODEV; |
1da177e4 LT |
1856 | } |
1857 | ||
d550d98d | 1858 | return 0; |
1da177e4 LT |
1859 | } |
1860 | ||
4be44fcd | 1861 | static void __exit acpi_video_exit(void) |
1da177e4 | 1862 | { |
1da177e4 LT |
1863 | |
1864 | acpi_bus_unregister_driver(&acpi_video_bus); | |
1865 | ||
1866 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1867 | ||
d550d98d | 1868 | return; |
1da177e4 LT |
1869 | } |
1870 | ||
1871 | module_init(acpi_video_init); | |
1872 | module_exit(acpi_video_exit); |