Commit | Line | Data |
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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> | |
bbac81f5 | 32 | #include <linux/mutex.h> |
1da177e4 LT |
33 | #include <linux/proc_fs.h> |
34 | #include <linux/seq_file.h> | |
e9dab196 | 35 | #include <linux/input.h> |
2f3d000a | 36 | #include <linux/backlight.h> |
23b0f015 | 37 | #include <linux/video_output.h> |
1da177e4 LT |
38 | #include <asm/uaccess.h> |
39 | ||
40 | #include <acpi/acpi_bus.h> | |
41 | #include <acpi/acpi_drivers.h> | |
42 | ||
43 | #define ACPI_VIDEO_COMPONENT 0x08000000 | |
44 | #define ACPI_VIDEO_CLASS "video" | |
1da177e4 LT |
45 | #define ACPI_VIDEO_BUS_NAME "Video Bus" |
46 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" | |
47 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 | |
48 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 | |
49 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 | |
50 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 | |
51 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 | |
52 | ||
f4715189 TT |
53 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85 |
54 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 | |
55 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 | |
56 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88 | |
57 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89 | |
1da177e4 | 58 | |
1da177e4 LT |
59 | #define ACPI_VIDEO_HEAD_INVALID (~0u - 1) |
60 | #define ACPI_VIDEO_HEAD_END (~0u) | |
2f3d000a | 61 | #define MAX_NAME_LEN 20 |
1da177e4 | 62 | |
82cae999 RZ |
63 | #define ACPI_VIDEO_DISPLAY_CRT 1 |
64 | #define ACPI_VIDEO_DISPLAY_TV 2 | |
65 | #define ACPI_VIDEO_DISPLAY_DVI 3 | |
66 | #define ACPI_VIDEO_DISPLAY_LCD 4 | |
67 | ||
1da177e4 | 68 | #define _COMPONENT ACPI_VIDEO_COMPONENT |
f52fd66d | 69 | ACPI_MODULE_NAME("video"); |
1da177e4 | 70 | |
f52fd66d | 71 | MODULE_AUTHOR("Bruno Ducrot"); |
7cda93e0 | 72 | MODULE_DESCRIPTION("ACPI Video Driver"); |
1da177e4 LT |
73 | MODULE_LICENSE("GPL"); |
74 | ||
4be44fcd LB |
75 | static int acpi_video_bus_add(struct acpi_device *device); |
76 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
1da177e4 | 77 | |
1ba90e3a TR |
78 | static const struct acpi_device_id video_device_ids[] = { |
79 | {ACPI_VIDEO_HID, 0}, | |
80 | {"", 0}, | |
81 | }; | |
82 | MODULE_DEVICE_TABLE(acpi, video_device_ids); | |
83 | ||
1da177e4 | 84 | static struct acpi_driver acpi_video_bus = { |
c2b6705b | 85 | .name = "video", |
1da177e4 | 86 | .class = ACPI_VIDEO_CLASS, |
1ba90e3a | 87 | .ids = video_device_ids, |
1da177e4 LT |
88 | .ops = { |
89 | .add = acpi_video_bus_add, | |
90 | .remove = acpi_video_bus_remove, | |
4be44fcd | 91 | }, |
1da177e4 LT |
92 | }; |
93 | ||
94 | struct acpi_video_bus_flags { | |
4be44fcd LB |
95 | u8 multihead:1; /* can switch video heads */ |
96 | u8 rom:1; /* can retrieve a video rom */ | |
97 | u8 post:1; /* can configure the head to */ | |
98 | u8 reserved:5; | |
1da177e4 LT |
99 | }; |
100 | ||
101 | struct acpi_video_bus_cap { | |
4be44fcd LB |
102 | u8 _DOS:1; /*Enable/Disable output switching */ |
103 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
104 | u8 _ROM:1; /*Get ROM Data */ | |
105 | u8 _GPD:1; /*Get POST Device */ | |
106 | u8 _SPD:1; /*Set POST Device */ | |
107 | u8 _VPO:1; /*Video POST Options */ | |
108 | u8 reserved:2; | |
1da177e4 LT |
109 | }; |
110 | ||
4be44fcd LB |
111 | struct acpi_video_device_attrib { |
112 | u32 display_index:4; /* A zero-based instance of the Display */ | |
98fb8fe1 | 113 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
4be44fcd | 114 | u32 display_type:4; /*Describe the specific type in use */ |
98fb8fe1 | 115 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
4be44fcd LB |
116 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
117 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
118 | the VGA device. */ | |
119 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
120 | u32 reserved:10; /*Must be 0 */ | |
121 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
122 | }; |
123 | ||
124 | struct acpi_video_enumerated_device { | |
125 | union { | |
126 | u32 int_val; | |
4be44fcd | 127 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
128 | } value; |
129 | struct acpi_video_device *bind_info; | |
130 | }; | |
131 | ||
132 | struct acpi_video_bus { | |
e6afa0de | 133 | struct acpi_device *device; |
4be44fcd | 134 | u8 dos_setting; |
1da177e4 | 135 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
136 | u8 attached_count; |
137 | struct acpi_video_bus_cap cap; | |
1da177e4 | 138 | struct acpi_video_bus_flags flags; |
4be44fcd | 139 | struct list_head video_device_list; |
bbac81f5 | 140 | struct mutex device_list_lock; /* protects video_device_list */ |
4be44fcd | 141 | struct proc_dir_entry *dir; |
e9dab196 LY |
142 | struct input_dev *input; |
143 | char phys[32]; /* for input device */ | |
1da177e4 LT |
144 | }; |
145 | ||
146 | struct acpi_video_device_flags { | |
4be44fcd LB |
147 | u8 crt:1; |
148 | u8 lcd:1; | |
149 | u8 tvout:1; | |
82cae999 | 150 | u8 dvi:1; |
4be44fcd LB |
151 | u8 bios:1; |
152 | u8 unknown:1; | |
82cae999 | 153 | u8 reserved:2; |
1da177e4 LT |
154 | }; |
155 | ||
156 | struct acpi_video_device_cap { | |
4be44fcd LB |
157 | u8 _ADR:1; /*Return the unique ID */ |
158 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
159 | u8 _BCM:1; /*Set the brightness level */ | |
2f3d000a | 160 | u8 _BQC:1; /* Get current brightness level */ |
4be44fcd LB |
161 | u8 _DDC:1; /*Return the EDID for this device */ |
162 | u8 _DCS:1; /*Return status of output device */ | |
163 | u8 _DGS:1; /*Query graphics state */ | |
164 | u8 _DSS:1; /*Device state set */ | |
1da177e4 LT |
165 | }; |
166 | ||
167 | struct acpi_video_device_brightness { | |
4be44fcd LB |
168 | int curr; |
169 | int count; | |
170 | int *levels; | |
1da177e4 LT |
171 | }; |
172 | ||
173 | struct acpi_video_device { | |
4be44fcd LB |
174 | unsigned long device_id; |
175 | struct acpi_video_device_flags flags; | |
176 | struct acpi_video_device_cap cap; | |
177 | struct list_head entry; | |
178 | struct acpi_video_bus *video; | |
179 | struct acpi_device *dev; | |
1da177e4 | 180 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 181 | struct backlight_device *backlight; |
23b0f015 | 182 | struct output_device *output_dev; |
1da177e4 LT |
183 | }; |
184 | ||
1da177e4 LT |
185 | /* bus */ |
186 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
187 | static struct file_operations acpi_video_bus_info_fops = { | |
4be44fcd LB |
188 | .open = acpi_video_bus_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_ROM_open_fs(struct inode *inode, struct file *file); | |
195 | static struct file_operations acpi_video_bus_ROM_fops = { | |
4be44fcd LB |
196 | .open = acpi_video_bus_ROM_open_fs, |
197 | .read = seq_read, | |
198 | .llseek = seq_lseek, | |
199 | .release = single_release, | |
1da177e4 LT |
200 | }; |
201 | ||
4be44fcd LB |
202 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
203 | struct file *file); | |
1da177e4 | 204 | static struct file_operations acpi_video_bus_POST_info_fops = { |
4be44fcd LB |
205 | .open = acpi_video_bus_POST_info_open_fs, |
206 | .read = seq_read, | |
207 | .llseek = seq_lseek, | |
208 | .release = single_release, | |
1da177e4 LT |
209 | }; |
210 | ||
211 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
212 | static struct file_operations acpi_video_bus_POST_fops = { | |
4be44fcd LB |
213 | .open = acpi_video_bus_POST_open_fs, |
214 | .read = seq_read, | |
215 | .llseek = seq_lseek, | |
216 | .release = single_release, | |
1da177e4 LT |
217 | }; |
218 | ||
1da177e4 LT |
219 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
220 | static struct file_operations acpi_video_bus_DOS_fops = { | |
4be44fcd LB |
221 | .open = acpi_video_bus_DOS_open_fs, |
222 | .read = seq_read, | |
223 | .llseek = seq_lseek, | |
224 | .release = single_release, | |
1da177e4 LT |
225 | }; |
226 | ||
227 | /* device */ | |
4be44fcd LB |
228 | static int acpi_video_device_info_open_fs(struct inode *inode, |
229 | struct file *file); | |
1da177e4 | 230 | static struct file_operations acpi_video_device_info_fops = { |
4be44fcd LB |
231 | .open = acpi_video_device_info_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_state_open_fs(struct inode *inode, |
238 | struct file *file); | |
1da177e4 | 239 | static struct file_operations acpi_video_device_state_fops = { |
4be44fcd LB |
240 | .open = acpi_video_device_state_open_fs, |
241 | .read = seq_read, | |
242 | .llseek = seq_lseek, | |
243 | .release = single_release, | |
1da177e4 LT |
244 | }; |
245 | ||
4be44fcd LB |
246 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
247 | struct file *file); | |
1da177e4 | 248 | static struct file_operations acpi_video_device_brightness_fops = { |
4be44fcd LB |
249 | .open = acpi_video_device_brightness_open_fs, |
250 | .read = seq_read, | |
251 | .llseek = seq_lseek, | |
252 | .release = single_release, | |
1da177e4 LT |
253 | }; |
254 | ||
4be44fcd LB |
255 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
256 | struct file *file); | |
1da177e4 | 257 | static struct file_operations acpi_video_device_EDID_fops = { |
4be44fcd LB |
258 | .open = acpi_video_device_EDID_open_fs, |
259 | .read = seq_read, | |
260 | .llseek = seq_lseek, | |
261 | .release = single_release, | |
1da177e4 LT |
262 | }; |
263 | ||
4be44fcd | 264 | static char device_decode[][30] = { |
1da177e4 LT |
265 | "motherboard VGA device", |
266 | "PCI VGA device", | |
267 | "AGP VGA device", | |
268 | "UNKNOWN", | |
269 | }; | |
270 | ||
4be44fcd LB |
271 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
272 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
273 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
274 | struct acpi_video_device *device); | |
1da177e4 | 275 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
4be44fcd | 276 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event); |
2f3d000a YL |
277 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
278 | int level); | |
279 | static int acpi_video_device_lcd_get_level_current( | |
280 | struct acpi_video_device *device, | |
281 | unsigned long *level); | |
4be44fcd LB |
282 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
283 | u32 level_current, u32 event); | |
284 | static void acpi_video_switch_brightness(struct acpi_video_device *device, | |
285 | int event); | |
23b0f015 LY |
286 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
287 | unsigned long *state); | |
288 | static int acpi_video_output_get(struct output_device *od); | |
289 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 290 | |
2f3d000a YL |
291 | /*backlight device sysfs support*/ |
292 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
293 | { | |
294 | unsigned long cur_level; | |
295 | struct acpi_video_device *vd = | |
655bfd7a | 296 | (struct acpi_video_device *)bl_get_data(bd); |
2f3d000a YL |
297 | acpi_video_device_lcd_get_level_current(vd, &cur_level); |
298 | return (int) cur_level; | |
299 | } | |
300 | ||
301 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
302 | { | |
599a52d1 | 303 | int request_level = bd->props.brightness; |
2f3d000a | 304 | struct acpi_video_device *vd = |
655bfd7a | 305 | (struct acpi_video_device *)bl_get_data(bd); |
2f3d000a YL |
306 | acpi_video_device_lcd_set_level(vd, request_level); |
307 | return 0; | |
308 | } | |
309 | ||
599a52d1 RP |
310 | static struct backlight_ops acpi_backlight_ops = { |
311 | .get_brightness = acpi_video_get_brightness, | |
312 | .update_status = acpi_video_set_brightness, | |
313 | }; | |
314 | ||
23b0f015 LY |
315 | /*video output device sysfs support*/ |
316 | static int acpi_video_output_get(struct output_device *od) | |
317 | { | |
318 | unsigned long state; | |
319 | struct acpi_video_device *vd = | |
60043428 | 320 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
321 | acpi_video_device_get_state(vd, &state); |
322 | return (int)state; | |
323 | } | |
324 | ||
325 | static int acpi_video_output_set(struct output_device *od) | |
326 | { | |
327 | unsigned long state = od->request_state; | |
328 | struct acpi_video_device *vd= | |
60043428 | 329 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
330 | return acpi_video_device_set_state(vd, state); |
331 | } | |
332 | ||
333 | static struct output_properties acpi_output_properties = { | |
334 | .set_state = acpi_video_output_set, | |
335 | .get_status = acpi_video_output_get, | |
336 | }; | |
1da177e4 LT |
337 | /* -------------------------------------------------------------------------- |
338 | Video Management | |
339 | -------------------------------------------------------------------------- */ | |
340 | ||
341 | /* device */ | |
342 | ||
343 | static int | |
4be44fcd | 344 | acpi_video_device_query(struct acpi_video_device *device, unsigned long *state) |
1da177e4 | 345 | { |
4be44fcd | 346 | int status; |
90130268 PM |
347 | |
348 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 349 | |
d550d98d | 350 | return status; |
1da177e4 LT |
351 | } |
352 | ||
353 | static int | |
4be44fcd LB |
354 | acpi_video_device_get_state(struct acpi_video_device *device, |
355 | unsigned long *state) | |
1da177e4 | 356 | { |
4be44fcd | 357 | int status; |
1da177e4 | 358 | |
90130268 | 359 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 360 | |
d550d98d | 361 | return status; |
1da177e4 LT |
362 | } |
363 | ||
364 | static int | |
4be44fcd | 365 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 366 | { |
4be44fcd LB |
367 | int status; |
368 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
369 | struct acpi_object_list args = { 1, &arg0 }; | |
824b558b | 370 | unsigned long ret; |
1da177e4 | 371 | |
1da177e4 LT |
372 | |
373 | arg0.integer.value = state; | |
90130268 | 374 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 375 | |
d550d98d | 376 | return status; |
1da177e4 LT |
377 | } |
378 | ||
379 | static int | |
4be44fcd LB |
380 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
381 | union acpi_object **levels) | |
1da177e4 | 382 | { |
4be44fcd LB |
383 | int status; |
384 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
385 | union acpi_object *obj; | |
1da177e4 | 386 | |
1da177e4 LT |
387 | |
388 | *levels = NULL; | |
389 | ||
90130268 | 390 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 391 | if (!ACPI_SUCCESS(status)) |
d550d98d | 392 | return status; |
4be44fcd | 393 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 394 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 395 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
396 | status = -EFAULT; |
397 | goto err; | |
398 | } | |
399 | ||
400 | *levels = obj; | |
401 | ||
d550d98d | 402 | return 0; |
1da177e4 | 403 | |
4be44fcd | 404 | err: |
6044ec88 | 405 | kfree(buffer.pointer); |
1da177e4 | 406 | |
d550d98d | 407 | return status; |
1da177e4 LT |
408 | } |
409 | ||
410 | static int | |
4be44fcd | 411 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 412 | { |
4500ca8e | 413 | int status = AE_OK; |
4be44fcd LB |
414 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
415 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 416 | |
1da177e4 LT |
417 | |
418 | arg0.integer.value = level; | |
1da177e4 | 419 | |
4500ca8e AS |
420 | if (device->cap._BCM) |
421 | status = acpi_evaluate_object(device->dev->handle, "_BCM", | |
422 | &args, NULL); | |
423 | device->brightness->curr = level; | |
d550d98d | 424 | return status; |
1da177e4 LT |
425 | } |
426 | ||
427 | static int | |
4be44fcd LB |
428 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
429 | unsigned long *level) | |
1da177e4 | 430 | { |
4500ca8e AS |
431 | if (device->cap._BQC) |
432 | return acpi_evaluate_integer(device->dev->handle, "_BQC", NULL, | |
433 | level); | |
434 | *level = device->brightness->curr; | |
435 | return AE_OK; | |
1da177e4 LT |
436 | } |
437 | ||
438 | static int | |
4be44fcd LB |
439 | acpi_video_device_EDID(struct acpi_video_device *device, |
440 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 441 | { |
4be44fcd LB |
442 | int status; |
443 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
444 | union acpi_object *obj; | |
445 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
446 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 447 | |
1da177e4 LT |
448 | |
449 | *edid = NULL; | |
450 | ||
451 | if (!device) | |
d550d98d | 452 | return -ENODEV; |
1da177e4 LT |
453 | if (length == 128) |
454 | arg0.integer.value = 1; | |
455 | else if (length == 256) | |
456 | arg0.integer.value = 2; | |
457 | else | |
d550d98d | 458 | return -EINVAL; |
1da177e4 | 459 | |
90130268 | 460 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 461 | if (ACPI_FAILURE(status)) |
d550d98d | 462 | return -ENODEV; |
1da177e4 | 463 | |
50dd0969 | 464 | obj = buffer.pointer; |
1da177e4 LT |
465 | |
466 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
467 | *edid = obj; | |
468 | else { | |
6468463a | 469 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
470 | status = -EFAULT; |
471 | kfree(obj); | |
472 | } | |
473 | ||
d550d98d | 474 | return status; |
1da177e4 LT |
475 | } |
476 | ||
1da177e4 LT |
477 | /* bus */ |
478 | ||
479 | static int | |
4be44fcd | 480 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 481 | { |
4be44fcd LB |
482 | int status; |
483 | unsigned long tmp; | |
484 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
485 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 486 | |
1da177e4 LT |
487 | |
488 | arg0.integer.value = option; | |
489 | ||
90130268 | 490 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 491 | if (ACPI_SUCCESS(status)) |
4be44fcd | 492 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 493 | |
d550d98d | 494 | return status; |
1da177e4 LT |
495 | } |
496 | ||
497 | static int | |
4be44fcd | 498 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) |
1da177e4 LT |
499 | { |
500 | int status; | |
501 | ||
90130268 | 502 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 503 | |
d550d98d | 504 | return status; |
1da177e4 LT |
505 | } |
506 | ||
507 | static int | |
4be44fcd LB |
508 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
509 | unsigned long *options) | |
1da177e4 | 510 | { |
4be44fcd | 511 | int status; |
1da177e4 | 512 | |
90130268 | 513 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
514 | *options &= 3; |
515 | ||
d550d98d | 516 | return status; |
1da177e4 LT |
517 | } |
518 | ||
519 | /* | |
520 | * Arg: | |
521 | * video : video bus device pointer | |
522 | * bios_flag : | |
523 | * 0. The system BIOS should NOT automatically switch(toggle) | |
524 | * the active display output. | |
525 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 526 | * active display output. No switch event. |
1da177e4 LT |
527 | * 2. The _DGS value should be locked. |
528 | * 3. The system BIOS should not automatically switch (toggle) the | |
529 | * active display output, but instead generate the display switch | |
530 | * event notify code. | |
531 | * lcd_flag : | |
532 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 533 | * of the LCD when the power changes from AC to DC |
1da177e4 | 534 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 535 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
536 | * Return Value: |
537 | * -1 wrong arg. | |
538 | */ | |
539 | ||
540 | static int | |
4be44fcd | 541 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 542 | { |
4be44fcd LB |
543 | acpi_integer status = 0; |
544 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
545 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 546 | |
1da177e4 | 547 | |
4be44fcd | 548 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
549 | status = -1; |
550 | goto Failed; | |
551 | } | |
552 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
553 | video->dos_setting = arg0.integer.value; | |
90130268 | 554 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 555 | |
4be44fcd | 556 | Failed: |
d550d98d | 557 | return status; |
1da177e4 LT |
558 | } |
559 | ||
560 | /* | |
561 | * Arg: | |
562 | * device : video output device (LCD, CRT, ..) | |
563 | * | |
564 | * Return Value: | |
565 | * None | |
566 | * | |
98fb8fe1 | 567 | * Find out all required AML methods defined under the output |
1da177e4 LT |
568 | * device. |
569 | */ | |
570 | ||
4be44fcd | 571 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 572 | { |
1da177e4 LT |
573 | acpi_handle h_dummy1; |
574 | int i; | |
2f3d000a | 575 | u32 max_level = 0; |
1da177e4 LT |
576 | union acpi_object *obj = NULL; |
577 | struct acpi_video_device_brightness *br = NULL; | |
578 | ||
1da177e4 | 579 | |
98934def | 580 | memset(&device->cap, 0, sizeof(device->cap)); |
1da177e4 | 581 | |
90130268 | 582 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
583 | device->cap._ADR = 1; |
584 | } | |
90130268 | 585 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 586 | device->cap._BCL = 1; |
1da177e4 | 587 | } |
90130268 | 588 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 589 | device->cap._BCM = 1; |
1da177e4 | 590 | } |
2f3d000a YL |
591 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
592 | device->cap._BQC = 1; | |
90130268 | 593 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 594 | device->cap._DDC = 1; |
1da177e4 | 595 | } |
90130268 | 596 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
597 | device->cap._DCS = 1; |
598 | } | |
90130268 | 599 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
600 | device->cap._DGS = 1; |
601 | } | |
90130268 | 602 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
603 | device->cap._DSS = 1; |
604 | } | |
605 | ||
f70ac0e9 DK |
606 | if (ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { |
607 | ||
608 | if (obj->package.count >= 2) { | |
609 | int count = 0; | |
610 | union acpi_object *o; | |
611 | ||
612 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
613 | if (!br) { | |
614 | printk(KERN_ERR "can't allocate memory\n"); | |
1da177e4 | 615 | } else { |
f70ac0e9 DK |
616 | br->levels = kmalloc(obj->package.count * |
617 | sizeof *(br->levels), GFP_KERNEL); | |
618 | if (!br->levels) | |
619 | goto out; | |
620 | ||
621 | for (i = 0; i < obj->package.count; i++) { | |
622 | o = (union acpi_object *)&obj->package. | |
623 | elements[i]; | |
624 | if (o->type != ACPI_TYPE_INTEGER) { | |
625 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
626 | continue; | |
627 | } | |
628 | br->levels[count] = (u32) o->integer.value; | |
629 | ||
630 | if (br->levels[count] > max_level) | |
631 | max_level = br->levels[count]; | |
632 | count++; | |
633 | } | |
634 | out: | |
635 | if (count < 2) { | |
636 | kfree(br->levels); | |
637 | kfree(br); | |
638 | } else { | |
639 | br->count = count; | |
640 | device->brightness = br; | |
641 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
642 | "found %d brightness levels\n", | |
643 | count)); | |
644 | } | |
1da177e4 LT |
645 | } |
646 | } | |
f70ac0e9 DK |
647 | |
648 | } else { | |
649 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available LCD brightness level\n")); | |
1da177e4 LT |
650 | } |
651 | ||
d1dd0c23 | 652 | kfree(obj); |
1da177e4 | 653 | |
f70ac0e9 | 654 | if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){ |
2f3d000a YL |
655 | unsigned long tmp; |
656 | static int count = 0; | |
657 | char *name; | |
2f3d000a YL |
658 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
659 | if (!name) | |
660 | return; | |
661 | ||
2f3d000a | 662 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 663 | acpi_video_device_lcd_get_level_current(device, &tmp); |
2f3d000a | 664 | device->backlight = backlight_device_register(name, |
599a52d1 RP |
665 | NULL, device, &acpi_backlight_ops); |
666 | device->backlight->props.max_brightness = max_level; | |
667 | device->backlight->props.brightness = (int)tmp; | |
668 | backlight_update_status(device->backlight); | |
669 | ||
2f3d000a YL |
670 | kfree(name); |
671 | } | |
23b0f015 LY |
672 | if (device->cap._DCS && device->cap._DSS){ |
673 | static int count = 0; | |
674 | char *name; | |
675 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
676 | if (!name) | |
677 | return; | |
678 | sprintf(name, "acpi_video%d", count++); | |
679 | device->output_dev = video_output_register(name, | |
680 | NULL, device, &acpi_output_properties); | |
681 | kfree(name); | |
682 | } | |
d550d98d | 683 | return; |
1da177e4 LT |
684 | } |
685 | ||
686 | /* | |
687 | * Arg: | |
688 | * device : video output device (VGA) | |
689 | * | |
690 | * Return Value: | |
691 | * None | |
692 | * | |
98fb8fe1 | 693 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
694 | */ |
695 | ||
4be44fcd | 696 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 697 | { |
4be44fcd | 698 | acpi_handle h_dummy1; |
1da177e4 | 699 | |
98934def | 700 | memset(&video->cap, 0, sizeof(video->cap)); |
90130268 | 701 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
702 | video->cap._DOS = 1; |
703 | } | |
90130268 | 704 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
705 | video->cap._DOD = 1; |
706 | } | |
90130268 | 707 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
708 | video->cap._ROM = 1; |
709 | } | |
90130268 | 710 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
711 | video->cap._GPD = 1; |
712 | } | |
90130268 | 713 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
714 | video->cap._SPD = 1; |
715 | } | |
90130268 | 716 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
717 | video->cap._VPO = 1; |
718 | } | |
719 | } | |
720 | ||
721 | /* | |
722 | * Check whether the video bus device has required AML method to | |
723 | * support the desired features | |
724 | */ | |
725 | ||
4be44fcd | 726 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 727 | { |
4be44fcd | 728 | acpi_status status = -ENOENT; |
1da177e4 | 729 | |
1da177e4 LT |
730 | |
731 | if (!video) | |
d550d98d | 732 | return -EINVAL; |
1da177e4 LT |
733 | |
734 | /* Since there is no HID, CID and so on for VGA driver, we have | |
735 | * to check well known required nodes. | |
736 | */ | |
737 | ||
98fb8fe1 | 738 | /* Does this device support video switching? */ |
4be44fcd | 739 | if (video->cap._DOS) { |
1da177e4 LT |
740 | video->flags.multihead = 1; |
741 | status = 0; | |
742 | } | |
743 | ||
98fb8fe1 | 744 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 745 | if (video->cap._ROM) { |
1da177e4 LT |
746 | video->flags.rom = 1; |
747 | status = 0; | |
748 | } | |
749 | ||
98fb8fe1 | 750 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 751 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
752 | video->flags.post = 1; |
753 | status = 0; | |
754 | } | |
755 | ||
d550d98d | 756 | return status; |
1da177e4 LT |
757 | } |
758 | ||
759 | /* -------------------------------------------------------------------------- | |
760 | FS Interface (/proc) | |
761 | -------------------------------------------------------------------------- */ | |
762 | ||
4be44fcd | 763 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
764 | |
765 | /* video devices */ | |
766 | ||
4be44fcd | 767 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 768 | { |
50dd0969 | 769 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 770 | |
1da177e4 LT |
771 | |
772 | if (!dev) | |
773 | goto end; | |
774 | ||
775 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
776 | seq_printf(seq, "type: "); | |
777 | if (dev->flags.crt) | |
778 | seq_printf(seq, "CRT\n"); | |
779 | else if (dev->flags.lcd) | |
780 | seq_printf(seq, "LCD\n"); | |
781 | else if (dev->flags.tvout) | |
782 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
783 | else if (dev->flags.dvi) |
784 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
785 | else |
786 | seq_printf(seq, "UNKNOWN\n"); | |
787 | ||
4be44fcd | 788 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 789 | |
4be44fcd | 790 | end: |
d550d98d | 791 | return 0; |
1da177e4 LT |
792 | } |
793 | ||
794 | static int | |
4be44fcd | 795 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
796 | { |
797 | return single_open(file, acpi_video_device_info_seq_show, | |
798 | PDE(inode)->data); | |
799 | } | |
800 | ||
4be44fcd | 801 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 802 | { |
4be44fcd | 803 | int status; |
50dd0969 | 804 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 805 | unsigned long state; |
1da177e4 | 806 | |
1da177e4 LT |
807 | |
808 | if (!dev) | |
809 | goto end; | |
810 | ||
811 | status = acpi_video_device_get_state(dev, &state); | |
812 | seq_printf(seq, "state: "); | |
813 | if (ACPI_SUCCESS(status)) | |
814 | seq_printf(seq, "0x%02lx\n", state); | |
815 | else | |
816 | seq_printf(seq, "<not supported>\n"); | |
817 | ||
818 | status = acpi_video_device_query(dev, &state); | |
819 | seq_printf(seq, "query: "); | |
820 | if (ACPI_SUCCESS(status)) | |
821 | seq_printf(seq, "0x%02lx\n", state); | |
822 | else | |
823 | seq_printf(seq, "<not supported>\n"); | |
824 | ||
4be44fcd | 825 | end: |
d550d98d | 826 | return 0; |
1da177e4 LT |
827 | } |
828 | ||
829 | static int | |
4be44fcd | 830 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
831 | { |
832 | return single_open(file, acpi_video_device_state_seq_show, | |
833 | PDE(inode)->data); | |
834 | } | |
835 | ||
836 | static ssize_t | |
4be44fcd LB |
837 | acpi_video_device_write_state(struct file *file, |
838 | const char __user * buffer, | |
839 | size_t count, loff_t * data) | |
1da177e4 | 840 | { |
4be44fcd | 841 | int status; |
50dd0969 JE |
842 | struct seq_file *m = file->private_data; |
843 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
844 | char str[12] = { 0 }; |
845 | u32 state = 0; | |
1da177e4 | 846 | |
1da177e4 LT |
847 | |
848 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 849 | return -EINVAL; |
1da177e4 LT |
850 | |
851 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 852 | return -EFAULT; |
1da177e4 LT |
853 | |
854 | str[count] = 0; | |
855 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 856 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
857 | |
858 | status = acpi_video_device_set_state(dev, state); | |
859 | ||
860 | if (status) | |
d550d98d | 861 | return -EFAULT; |
1da177e4 | 862 | |
d550d98d | 863 | return count; |
1da177e4 LT |
864 | } |
865 | ||
866 | static int | |
4be44fcd | 867 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 868 | { |
50dd0969 | 869 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 870 | int i; |
1da177e4 | 871 | |
1da177e4 LT |
872 | |
873 | if (!dev || !dev->brightness) { | |
874 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 875 | return 0; |
1da177e4 LT |
876 | } |
877 | ||
878 | seq_printf(seq, "levels: "); | |
879 | for (i = 0; i < dev->brightness->count; i++) | |
880 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
881 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
882 | ||
d550d98d | 883 | return 0; |
1da177e4 LT |
884 | } |
885 | ||
886 | static int | |
4be44fcd | 887 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
888 | { |
889 | return single_open(file, acpi_video_device_brightness_seq_show, | |
890 | PDE(inode)->data); | |
891 | } | |
892 | ||
893 | static ssize_t | |
4be44fcd LB |
894 | acpi_video_device_write_brightness(struct file *file, |
895 | const char __user * buffer, | |
896 | size_t count, loff_t * data) | |
1da177e4 | 897 | { |
50dd0969 JE |
898 | struct seq_file *m = file->private_data; |
899 | struct acpi_video_device *dev = m->private; | |
c88c5786 | 900 | char str[5] = { 0 }; |
4be44fcd LB |
901 | unsigned int level = 0; |
902 | int i; | |
1da177e4 | 903 | |
1da177e4 | 904 | |
59d399d3 | 905 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 906 | return -EINVAL; |
1da177e4 LT |
907 | |
908 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 909 | return -EFAULT; |
1da177e4 LT |
910 | |
911 | str[count] = 0; | |
912 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 913 | |
1da177e4 | 914 | if (level > 100) |
d550d98d | 915 | return -EFAULT; |
1da177e4 | 916 | |
98fb8fe1 | 917 | /* validate through the list of available levels */ |
1da177e4 LT |
918 | for (i = 0; i < dev->brightness->count; i++) |
919 | if (level == dev->brightness->levels[i]) { | |
4be44fcd LB |
920 | if (ACPI_SUCCESS |
921 | (acpi_video_device_lcd_set_level(dev, level))) | |
1da177e4 LT |
922 | dev->brightness->curr = level; |
923 | break; | |
924 | } | |
925 | ||
d550d98d | 926 | return count; |
1da177e4 LT |
927 | } |
928 | ||
4be44fcd | 929 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 930 | { |
50dd0969 | 931 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
932 | int status; |
933 | int i; | |
934 | union acpi_object *edid = NULL; | |
1da177e4 | 935 | |
1da177e4 LT |
936 | |
937 | if (!dev) | |
938 | goto out; | |
939 | ||
4be44fcd | 940 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 941 | if (ACPI_FAILURE(status)) { |
4be44fcd | 942 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
943 | } |
944 | ||
945 | if (ACPI_FAILURE(status)) { | |
946 | goto out; | |
947 | } | |
948 | ||
949 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
950 | for (i = 0; i < edid->buffer.length; i++) | |
951 | seq_putc(seq, edid->buffer.pointer[i]); | |
952 | } | |
953 | ||
4be44fcd | 954 | out: |
1da177e4 LT |
955 | if (!edid) |
956 | seq_printf(seq, "<not supported>\n"); | |
957 | else | |
958 | kfree(edid); | |
959 | ||
d550d98d | 960 | return 0; |
1da177e4 LT |
961 | } |
962 | ||
963 | static int | |
4be44fcd | 964 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
965 | { |
966 | return single_open(file, acpi_video_device_EDID_seq_show, | |
967 | PDE(inode)->data); | |
968 | } | |
969 | ||
4be44fcd | 970 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 971 | { |
4be44fcd | 972 | struct proc_dir_entry *entry = NULL; |
1da177e4 LT |
973 | struct acpi_video_device *vid_dev; |
974 | ||
1da177e4 LT |
975 | |
976 | if (!device) | |
d550d98d | 977 | return -ENODEV; |
1da177e4 | 978 | |
50dd0969 | 979 | vid_dev = acpi_driver_data(device); |
1da177e4 | 980 | if (!vid_dev) |
d550d98d | 981 | return -ENODEV; |
1da177e4 LT |
982 | |
983 | if (!acpi_device_dir(device)) { | |
984 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 985 | vid_dev->video->dir); |
1da177e4 | 986 | if (!acpi_device_dir(device)) |
d550d98d | 987 | return -ENODEV; |
1da177e4 LT |
988 | acpi_device_dir(device)->owner = THIS_MODULE; |
989 | } | |
990 | ||
991 | /* 'info' [R] */ | |
992 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
993 | if (!entry) | |
d550d98d | 994 | return -ENODEV; |
1da177e4 LT |
995 | else { |
996 | entry->proc_fops = &acpi_video_device_info_fops; | |
997 | entry->data = acpi_driver_data(device); | |
998 | entry->owner = THIS_MODULE; | |
999 | } | |
1000 | ||
1001 | /* 'state' [R/W] */ | |
4be44fcd LB |
1002 | entry = |
1003 | create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR, | |
1004 | acpi_device_dir(device)); | |
1da177e4 | 1005 | if (!entry) |
d550d98d | 1006 | return -ENODEV; |
1da177e4 | 1007 | else { |
d479e908 | 1008 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1da177e4 | 1009 | entry->proc_fops = &acpi_video_device_state_fops; |
1da177e4 LT |
1010 | entry->data = acpi_driver_data(device); |
1011 | entry->owner = THIS_MODULE; | |
1012 | } | |
1013 | ||
1014 | /* 'brightness' [R/W] */ | |
4be44fcd LB |
1015 | entry = |
1016 | create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
1017 | acpi_device_dir(device)); | |
1da177e4 | 1018 | if (!entry) |
d550d98d | 1019 | return -ENODEV; |
1da177e4 | 1020 | else { |
d479e908 | 1021 | acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness; |
1da177e4 | 1022 | entry->proc_fops = &acpi_video_device_brightness_fops; |
1da177e4 LT |
1023 | entry->data = acpi_driver_data(device); |
1024 | entry->owner = THIS_MODULE; | |
1025 | } | |
1026 | ||
1027 | /* 'EDID' [R] */ | |
1028 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); | |
1029 | if (!entry) | |
d550d98d | 1030 | return -ENODEV; |
1da177e4 LT |
1031 | else { |
1032 | entry->proc_fops = &acpi_video_device_EDID_fops; | |
1033 | entry->data = acpi_driver_data(device); | |
1034 | entry->owner = THIS_MODULE; | |
1035 | } | |
1036 | ||
d550d98d | 1037 | return 0; |
1da177e4 LT |
1038 | } |
1039 | ||
4be44fcd | 1040 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1041 | { |
1042 | struct acpi_video_device *vid_dev; | |
1da177e4 | 1043 | |
50dd0969 | 1044 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1045 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 1046 | return -ENODEV; |
1da177e4 LT |
1047 | |
1048 | if (acpi_device_dir(device)) { | |
1049 | remove_proc_entry("info", acpi_device_dir(device)); | |
1050 | remove_proc_entry("state", acpi_device_dir(device)); | |
1051 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
1052 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
4be44fcd | 1053 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1054 | acpi_device_dir(device) = NULL; |
1055 | } | |
1056 | ||
d550d98d | 1057 | return 0; |
1da177e4 LT |
1058 | } |
1059 | ||
1da177e4 | 1060 | /* video bus */ |
4be44fcd | 1061 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1062 | { |
50dd0969 | 1063 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1064 | |
1da177e4 LT |
1065 | |
1066 | if (!video) | |
1067 | goto end; | |
1068 | ||
1069 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1070 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1071 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1072 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1073 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1074 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1075 | |
4be44fcd | 1076 | end: |
d550d98d | 1077 | return 0; |
1da177e4 LT |
1078 | } |
1079 | ||
4be44fcd | 1080 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1081 | { |
4be44fcd LB |
1082 | return single_open(file, acpi_video_bus_info_seq_show, |
1083 | PDE(inode)->data); | |
1da177e4 LT |
1084 | } |
1085 | ||
4be44fcd | 1086 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1087 | { |
50dd0969 | 1088 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1089 | |
1da177e4 LT |
1090 | |
1091 | if (!video) | |
1092 | goto end; | |
1093 | ||
1094 | printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__); | |
1095 | seq_printf(seq, "<TODO>\n"); | |
1096 | ||
4be44fcd | 1097 | end: |
d550d98d | 1098 | return 0; |
1da177e4 LT |
1099 | } |
1100 | ||
4be44fcd | 1101 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1102 | { |
1103 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1104 | } | |
1105 | ||
4be44fcd | 1106 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1107 | { |
50dd0969 | 1108 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1109 | unsigned long options; |
1110 | int status; | |
1da177e4 | 1111 | |
1da177e4 LT |
1112 | |
1113 | if (!video) | |
1114 | goto end; | |
1115 | ||
1116 | status = acpi_video_bus_POST_options(video, &options); | |
1117 | if (ACPI_SUCCESS(status)) { | |
1118 | if (!(options & 1)) { | |
4be44fcd LB |
1119 | printk(KERN_WARNING PREFIX |
1120 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1121 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1122 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 LT |
1123 | } |
1124 | printk("%lx\n", options); | |
98fb8fe1 | 1125 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1126 | if (options & 2) |
1127 | seq_printf(seq, " <PCI video>"); | |
1128 | if (options & 4) | |
1129 | seq_printf(seq, " <AGP video>"); | |
1130 | seq_putc(seq, '\n'); | |
1131 | } else | |
1132 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1133 | end: |
d550d98d | 1134 | return 0; |
1da177e4 LT |
1135 | } |
1136 | ||
1137 | static int | |
4be44fcd | 1138 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1139 | { |
4be44fcd LB |
1140 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1141 | PDE(inode)->data); | |
1da177e4 LT |
1142 | } |
1143 | ||
4be44fcd | 1144 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1145 | { |
50dd0969 | 1146 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1147 | int status; |
1148 | unsigned long id; | |
1da177e4 | 1149 | |
1da177e4 LT |
1150 | |
1151 | if (!video) | |
1152 | goto end; | |
1153 | ||
4be44fcd | 1154 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1155 | if (!ACPI_SUCCESS(status)) { |
1156 | seq_printf(seq, "<not supported>\n"); | |
1157 | goto end; | |
1158 | } | |
98fb8fe1 | 1159 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1160 | |
4be44fcd | 1161 | end: |
d550d98d | 1162 | return 0; |
1da177e4 LT |
1163 | } |
1164 | ||
4be44fcd | 1165 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1166 | { |
50dd0969 | 1167 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1168 | |
1da177e4 | 1169 | |
4be44fcd | 1170 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1171 | |
d550d98d | 1172 | return 0; |
1da177e4 LT |
1173 | } |
1174 | ||
4be44fcd | 1175 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1176 | { |
4be44fcd LB |
1177 | return single_open(file, acpi_video_bus_POST_seq_show, |
1178 | PDE(inode)->data); | |
1da177e4 LT |
1179 | } |
1180 | ||
4be44fcd | 1181 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1182 | { |
1183 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1184 | } | |
1185 | ||
1186 | static ssize_t | |
4be44fcd LB |
1187 | acpi_video_bus_write_POST(struct file *file, |
1188 | const char __user * buffer, | |
1189 | size_t count, loff_t * data) | |
1da177e4 | 1190 | { |
4be44fcd | 1191 | int status; |
50dd0969 JE |
1192 | struct seq_file *m = file->private_data; |
1193 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1194 | char str[12] = { 0 }; |
1195 | unsigned long opt, options; | |
1da177e4 | 1196 | |
1da177e4 | 1197 | |
1da177e4 | 1198 | if (!video || count + 1 > sizeof str) |
d550d98d | 1199 | return -EINVAL; |
1da177e4 LT |
1200 | |
1201 | status = acpi_video_bus_POST_options(video, &options); | |
1202 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1203 | return -EINVAL; |
1da177e4 LT |
1204 | |
1205 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1206 | return -EFAULT; |
1da177e4 LT |
1207 | |
1208 | str[count] = 0; | |
1209 | opt = strtoul(str, NULL, 0); | |
1210 | if (opt > 3) | |
d550d98d | 1211 | return -EFAULT; |
1da177e4 | 1212 | |
98fb8fe1 | 1213 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1214 | options |= 1; |
1215 | ||
1216 | if (options & (1ul << opt)) { | |
4be44fcd | 1217 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1218 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1219 | return -EFAULT; |
1da177e4 LT |
1220 | |
1221 | } | |
1222 | ||
d550d98d | 1223 | return count; |
1da177e4 LT |
1224 | } |
1225 | ||
1226 | static ssize_t | |
4be44fcd LB |
1227 | acpi_video_bus_write_DOS(struct file *file, |
1228 | const char __user * buffer, | |
1229 | size_t count, loff_t * data) | |
1da177e4 | 1230 | { |
4be44fcd | 1231 | int status; |
50dd0969 JE |
1232 | struct seq_file *m = file->private_data; |
1233 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1234 | char str[12] = { 0 }; |
1235 | unsigned long opt; | |
1da177e4 | 1236 | |
1da177e4 | 1237 | |
1da177e4 | 1238 | if (!video || count + 1 > sizeof str) |
d550d98d | 1239 | return -EINVAL; |
1da177e4 LT |
1240 | |
1241 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1242 | return -EFAULT; |
1da177e4 LT |
1243 | |
1244 | str[count] = 0; | |
1245 | opt = strtoul(str, NULL, 0); | |
1246 | if (opt > 7) | |
d550d98d | 1247 | return -EFAULT; |
1da177e4 | 1248 | |
4be44fcd | 1249 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1250 | |
1251 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1252 | return -EFAULT; |
1da177e4 | 1253 | |
d550d98d | 1254 | return count; |
1da177e4 LT |
1255 | } |
1256 | ||
4be44fcd | 1257 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1258 | { |
4be44fcd LB |
1259 | struct proc_dir_entry *entry = NULL; |
1260 | struct acpi_video_bus *video; | |
1da177e4 | 1261 | |
1da177e4 | 1262 | |
50dd0969 | 1263 | video = acpi_driver_data(device); |
1da177e4 LT |
1264 | |
1265 | if (!acpi_device_dir(device)) { | |
1266 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1267 | acpi_video_dir); |
1da177e4 | 1268 | if (!acpi_device_dir(device)) |
d550d98d | 1269 | return -ENODEV; |
1da177e4 LT |
1270 | video->dir = acpi_device_dir(device); |
1271 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1272 | } | |
1273 | ||
1274 | /* 'info' [R] */ | |
1275 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1276 | if (!entry) | |
d550d98d | 1277 | return -ENODEV; |
1da177e4 LT |
1278 | else { |
1279 | entry->proc_fops = &acpi_video_bus_info_fops; | |
1280 | entry->data = acpi_driver_data(device); | |
1281 | entry->owner = THIS_MODULE; | |
1282 | } | |
1283 | ||
1284 | /* 'ROM' [R] */ | |
1285 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); | |
1286 | if (!entry) | |
d550d98d | 1287 | return -ENODEV; |
1da177e4 LT |
1288 | else { |
1289 | entry->proc_fops = &acpi_video_bus_ROM_fops; | |
1290 | entry->data = acpi_driver_data(device); | |
1291 | entry->owner = THIS_MODULE; | |
1292 | } | |
1293 | ||
1294 | /* 'POST_info' [R] */ | |
4be44fcd LB |
1295 | entry = |
1296 | create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); | |
1da177e4 | 1297 | if (!entry) |
d550d98d | 1298 | return -ENODEV; |
1da177e4 LT |
1299 | else { |
1300 | entry->proc_fops = &acpi_video_bus_POST_info_fops; | |
1301 | entry->data = acpi_driver_data(device); | |
1302 | entry->owner = THIS_MODULE; | |
1303 | } | |
1304 | ||
1305 | /* 'POST' [R/W] */ | |
4be44fcd LB |
1306 | entry = |
1307 | create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR, | |
1308 | acpi_device_dir(device)); | |
1da177e4 | 1309 | if (!entry) |
d550d98d | 1310 | return -ENODEV; |
1da177e4 | 1311 | else { |
d479e908 | 1312 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
1da177e4 | 1313 | entry->proc_fops = &acpi_video_bus_POST_fops; |
1da177e4 LT |
1314 | entry->data = acpi_driver_data(device); |
1315 | entry->owner = THIS_MODULE; | |
1316 | } | |
1317 | ||
1318 | /* 'DOS' [R/W] */ | |
4be44fcd LB |
1319 | entry = |
1320 | create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR, | |
1321 | acpi_device_dir(device)); | |
1da177e4 | 1322 | if (!entry) |
d550d98d | 1323 | return -ENODEV; |
1da177e4 | 1324 | else { |
d479e908 | 1325 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
1da177e4 | 1326 | entry->proc_fops = &acpi_video_bus_DOS_fops; |
1da177e4 LT |
1327 | entry->data = acpi_driver_data(device); |
1328 | entry->owner = THIS_MODULE; | |
1329 | } | |
1330 | ||
d550d98d | 1331 | return 0; |
1da177e4 LT |
1332 | } |
1333 | ||
4be44fcd | 1334 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1335 | { |
4be44fcd | 1336 | struct acpi_video_bus *video; |
1da177e4 | 1337 | |
1da177e4 | 1338 | |
50dd0969 | 1339 | video = acpi_driver_data(device); |
1da177e4 LT |
1340 | |
1341 | if (acpi_device_dir(device)) { | |
1342 | remove_proc_entry("info", acpi_device_dir(device)); | |
1343 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1344 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1345 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1346 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
4be44fcd | 1347 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1348 | acpi_device_dir(device) = NULL; |
1349 | } | |
1350 | ||
d550d98d | 1351 | return 0; |
1da177e4 LT |
1352 | } |
1353 | ||
1354 | /* -------------------------------------------------------------------------- | |
1355 | Driver Interface | |
1356 | -------------------------------------------------------------------------- */ | |
1357 | ||
1358 | /* device interface */ | |
82cae999 RZ |
1359 | static struct acpi_video_device_attrib* |
1360 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1361 | { | |
1362 | int count; | |
1363 | ||
1364 | for(count = 0; count < video->attached_count; count++) | |
1365 | if((video->attached_array[count].value.int_val & 0xffff) == device_id) | |
1366 | return &(video->attached_array[count].value.attrib); | |
1367 | return NULL; | |
1368 | } | |
1da177e4 LT |
1369 | |
1370 | static int | |
4be44fcd LB |
1371 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1372 | struct acpi_video_bus *video) | |
1da177e4 | 1373 | { |
4be44fcd | 1374 | unsigned long device_id; |
973bf491 | 1375 | int status; |
4be44fcd | 1376 | struct acpi_video_device *data; |
82cae999 | 1377 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1378 | |
1379 | if (!device || !video) | |
d550d98d | 1380 | return -EINVAL; |
1da177e4 | 1381 | |
4be44fcd LB |
1382 | status = |
1383 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1384 | if (ACPI_SUCCESS(status)) { |
1385 | ||
36bcbec7 | 1386 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1387 | if (!data) |
d550d98d | 1388 | return -ENOMEM; |
1da177e4 | 1389 | |
1da177e4 LT |
1390 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1391 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1392 | acpi_driver_data(device) = data; | |
1393 | ||
1394 | data->device_id = device_id; | |
1395 | data->video = video; | |
1396 | data->dev = device; | |
1397 | ||
82cae999 RZ |
1398 | attribute = acpi_video_get_device_attr(video, device_id); |
1399 | ||
1400 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1401 | switch (attribute->display_type) { | |
1402 | case ACPI_VIDEO_DISPLAY_CRT: | |
1403 | data->flags.crt = 1; | |
1404 | break; | |
1405 | case ACPI_VIDEO_DISPLAY_TV: | |
1406 | data->flags.tvout = 1; | |
1407 | break; | |
1408 | case ACPI_VIDEO_DISPLAY_DVI: | |
1409 | data->flags.dvi = 1; | |
1410 | break; | |
1411 | case ACPI_VIDEO_DISPLAY_LCD: | |
1412 | data->flags.lcd = 1; | |
1413 | break; | |
1414 | default: | |
1415 | data->flags.unknown = 1; | |
1416 | break; | |
1417 | } | |
1418 | if(attribute->bios_can_detect) | |
1419 | data->flags.bios = 1; | |
1420 | } else | |
1da177e4 | 1421 | data->flags.unknown = 1; |
4be44fcd | 1422 | |
1da177e4 LT |
1423 | acpi_video_device_bind(video, data); |
1424 | acpi_video_device_find_cap(data); | |
1425 | ||
90130268 | 1426 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1427 | ACPI_DEVICE_NOTIFY, |
1428 | acpi_video_device_notify, | |
1429 | data); | |
1da177e4 LT |
1430 | if (ACPI_FAILURE(status)) { |
1431 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1432 | "Error installing notify handler\n")); |
973bf491 YL |
1433 | if(data->brightness) |
1434 | kfree(data->brightness->levels); | |
1435 | kfree(data->brightness); | |
1436 | kfree(data); | |
1437 | return -ENODEV; | |
1da177e4 LT |
1438 | } |
1439 | ||
bbac81f5 | 1440 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1441 | list_add_tail(&data->entry, &video->video_device_list); |
bbac81f5 | 1442 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1443 | |
1444 | acpi_video_device_add_fs(device); | |
1445 | ||
d550d98d | 1446 | return 0; |
1da177e4 LT |
1447 | } |
1448 | ||
d550d98d | 1449 | return -ENOENT; |
1da177e4 LT |
1450 | } |
1451 | ||
1452 | /* | |
1453 | * Arg: | |
1454 | * video : video bus device | |
1455 | * | |
1456 | * Return: | |
1457 | * none | |
1458 | * | |
1459 | * Enumerate the video device list of the video bus, | |
1460 | * bind the ids with the corresponding video devices | |
1461 | * under the video bus. | |
4be44fcd | 1462 | */ |
1da177e4 | 1463 | |
4be44fcd | 1464 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1465 | { |
ff102ea9 DT |
1466 | struct acpi_video_device *dev; |
1467 | ||
bbac81f5 | 1468 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1469 | |
1470 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1471 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1472 | |
bbac81f5 | 1473 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1474 | } |
1475 | ||
1476 | /* | |
1477 | * Arg: | |
1478 | * video : video bus device | |
1479 | * device : video output device under the video | |
1480 | * bus | |
1481 | * | |
1482 | * Return: | |
1483 | * none | |
1484 | * | |
1485 | * Bind the ids with the corresponding video devices | |
1486 | * under the video bus. | |
4be44fcd | 1487 | */ |
1da177e4 LT |
1488 | |
1489 | static void | |
4be44fcd LB |
1490 | acpi_video_device_bind(struct acpi_video_bus *video, |
1491 | struct acpi_video_device *device) | |
1da177e4 | 1492 | { |
4be44fcd | 1493 | int i; |
1da177e4 LT |
1494 | |
1495 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1496 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
4be44fcd LB |
1497 | |
1498 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1499 | i < video->attached_count; i++) { | |
1500 | if (device->device_id == (IDS_VAL(i) & 0xffff)) { | |
1da177e4 LT |
1501 | IDS_BIND(i) = device; |
1502 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1503 | } | |
1504 | } | |
1505 | #undef IDS_VAL | |
1506 | #undef IDS_BIND | |
1507 | } | |
1508 | ||
1509 | /* | |
1510 | * Arg: | |
1511 | * video : video bus device | |
1512 | * | |
1513 | * Return: | |
1514 | * < 0 : error | |
1515 | * | |
1516 | * Call _DOD to enumerate all devices attached to display adapter | |
1517 | * | |
4be44fcd | 1518 | */ |
1da177e4 LT |
1519 | |
1520 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1521 | { | |
4be44fcd LB |
1522 | int status; |
1523 | int count; | |
1524 | int i; | |
1da177e4 | 1525 | struct acpi_video_enumerated_device *active_device_list; |
4be44fcd LB |
1526 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1527 | union acpi_object *dod = NULL; | |
1528 | union acpi_object *obj; | |
1da177e4 | 1529 | |
90130268 | 1530 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1531 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1532 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1533 | return status; |
1da177e4 LT |
1534 | } |
1535 | ||
50dd0969 | 1536 | dod = buffer.pointer; |
1da177e4 | 1537 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1538 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1539 | status = -EFAULT; |
1540 | goto out; | |
1541 | } | |
1542 | ||
1543 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1544 | dod->package.count)); |
1da177e4 | 1545 | |
4be44fcd LB |
1546 | active_device_list = kmalloc((1 + |
1547 | dod->package.count) * | |
1548 | sizeof(struct | |
1549 | acpi_video_enumerated_device), | |
1550 | GFP_KERNEL); | |
1da177e4 LT |
1551 | |
1552 | if (!active_device_list) { | |
1553 | status = -ENOMEM; | |
1554 | goto out; | |
1555 | } | |
1556 | ||
1557 | count = 0; | |
1558 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1559 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1560 | |
1561 | if (obj->type != ACPI_TYPE_INTEGER) { | |
6468463a | 1562 | printk(KERN_ERR PREFIX "Invalid _DOD data\n"); |
4be44fcd LB |
1563 | active_device_list[i].value.int_val = |
1564 | ACPI_VIDEO_HEAD_INVALID; | |
1da177e4 LT |
1565 | } |
1566 | active_device_list[i].value.int_val = obj->integer.value; | |
1567 | active_device_list[i].bind_info = NULL; | |
4be44fcd LB |
1568 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1569 | (int)obj->integer.value)); | |
1da177e4 LT |
1570 | count++; |
1571 | } | |
1572 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1573 | ||
6044ec88 | 1574 | kfree(video->attached_array); |
4be44fcd | 1575 | |
1da177e4 LT |
1576 | video->attached_array = active_device_list; |
1577 | video->attached_count = count; | |
4be44fcd | 1578 | out: |
02438d87 | 1579 | kfree(buffer.pointer); |
d550d98d | 1580 | return status; |
1da177e4 LT |
1581 | } |
1582 | ||
1583 | /* | |
1584 | * Arg: | |
1585 | * video : video bus device | |
98fb8fe1 | 1586 | * event : notify event |
1da177e4 LT |
1587 | * |
1588 | * Return: | |
1589 | * < 0 : error | |
1590 | * | |
1591 | * 1. Find out the current active output device. | |
98fb8fe1 | 1592 | * 2. Identify the next output device to switch to. |
1da177e4 | 1593 | * 3. call _DSS to do actual switch. |
4be44fcd | 1594 | */ |
1da177e4 | 1595 | |
4be44fcd | 1596 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event) |
1da177e4 | 1597 | { |
ff102ea9 | 1598 | struct list_head *node; |
4be44fcd LB |
1599 | struct acpi_video_device *dev = NULL; |
1600 | struct acpi_video_device *dev_next = NULL; | |
1601 | struct acpi_video_device *dev_prev = NULL; | |
1da177e4 LT |
1602 | unsigned long state; |
1603 | int status = 0; | |
1604 | ||
bbac81f5 | 1605 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1606 | |
ff102ea9 | 1607 | list_for_each(node, &video->video_device_list) { |
7334571f | 1608 | dev = container_of(node, struct acpi_video_device, entry); |
1da177e4 | 1609 | status = acpi_video_device_get_state(dev, &state); |
4be44fcd | 1610 | if (state & 0x2) { |
ff102ea9 DT |
1611 | dev_next = container_of(node->next, |
1612 | struct acpi_video_device, entry); | |
1613 | dev_prev = container_of(node->prev, | |
1614 | struct acpi_video_device, entry); | |
1da177e4 LT |
1615 | goto out; |
1616 | } | |
1617 | } | |
ff102ea9 | 1618 | |
1da177e4 LT |
1619 | dev_next = container_of(node->next, struct acpi_video_device, entry); |
1620 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); | |
ff102ea9 DT |
1621 | |
1622 | out: | |
bbac81f5 | 1623 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1624 | |
1da177e4 LT |
1625 | switch (event) { |
1626 | case ACPI_VIDEO_NOTIFY_CYCLE: | |
1627 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: | |
1628 | acpi_video_device_set_state(dev, 0); | |
1629 | acpi_video_device_set_state(dev_next, 0x80000001); | |
1630 | break; | |
1631 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: | |
1632 | acpi_video_device_set_state(dev, 0); | |
1633 | acpi_video_device_set_state(dev_prev, 0x80000001); | |
1634 | default: | |
1635 | break; | |
1636 | } | |
1637 | ||
d550d98d | 1638 | return status; |
1da177e4 LT |
1639 | } |
1640 | ||
4be44fcd LB |
1641 | static int |
1642 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1643 | u32 level_current, u32 event) | |
1da177e4 | 1644 | { |
63f0edfc | 1645 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
1646 | max = max_below = 0; |
1647 | min = min_above = 255; | |
63f0edfc AS |
1648 | /* Find closest level to level_current */ |
1649 | for (i = 0; i < device->brightness->count; i++) { | |
1650 | l = device->brightness->levels[i]; | |
1651 | if (abs(l - level_current) < abs(delta)) { | |
1652 | delta = l - level_current; | |
1653 | if (!delta) | |
1654 | break; | |
1655 | } | |
1656 | } | |
1657 | /* Ajust level_current to closest available level */ | |
1658 | level_current += delta; | |
f4715189 TT |
1659 | for (i = 0; i < device->brightness->count; i++) { |
1660 | l = device->brightness->levels[i]; | |
1661 | if (l < min) | |
1662 | min = l; | |
1663 | if (l > max) | |
1664 | max = l; | |
1665 | if (l < min_above && l > level_current) | |
1666 | min_above = l; | |
1667 | if (l > max_below && l < level_current) | |
1668 | max_below = l; | |
1669 | } | |
1670 | ||
1671 | switch (event) { | |
1672 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1673 | return (level_current < max) ? min_above : min; | |
1674 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1675 | return (level_current < max) ? min_above : max; | |
1676 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1677 | return (level_current > min) ? max_below : min; | |
1678 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1679 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1680 | return 0; | |
1681 | default: | |
1682 | return level_current; | |
1683 | } | |
1da177e4 LT |
1684 | } |
1685 | ||
1da177e4 | 1686 | static void |
4be44fcd | 1687 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 LT |
1688 | { |
1689 | unsigned long level_current, level_next; | |
1690 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1691 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1692 | acpi_video_device_lcd_set_level(device, level_next); | |
1693 | } | |
1694 | ||
1695 | static int | |
4be44fcd LB |
1696 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1697 | struct acpi_device *device) | |
1da177e4 | 1698 | { |
4be44fcd | 1699 | int status = 0; |
ff102ea9 | 1700 | struct acpi_device *dev; |
1da177e4 LT |
1701 | |
1702 | acpi_video_device_enumerate(video); | |
1703 | ||
ff102ea9 | 1704 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
1705 | |
1706 | status = acpi_video_bus_get_one_device(dev, video); | |
1707 | if (ACPI_FAILURE(status)) { | |
a6fc6720 | 1708 | ACPI_EXCEPTION((AE_INFO, status, "Cant attach device")); |
1da177e4 LT |
1709 | continue; |
1710 | } | |
1da177e4 | 1711 | } |
d550d98d | 1712 | return status; |
1da177e4 LT |
1713 | } |
1714 | ||
4be44fcd | 1715 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1716 | { |
031ec77b | 1717 | acpi_status status; |
1da177e4 LT |
1718 | struct acpi_video_bus *video; |
1719 | ||
1da177e4 LT |
1720 | |
1721 | if (!device || !device->video) | |
d550d98d | 1722 | return -ENOENT; |
1da177e4 LT |
1723 | |
1724 | video = device->video; | |
1725 | ||
1da177e4 LT |
1726 | acpi_video_device_remove_fs(device->dev); |
1727 | ||
90130268 | 1728 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1729 | ACPI_DEVICE_NOTIFY, |
1730 | acpi_video_device_notify); | |
599a52d1 | 1731 | backlight_device_unregister(device->backlight); |
23b0f015 | 1732 | video_output_unregister(device->output_dev); |
ff102ea9 | 1733 | |
d550d98d | 1734 | return 0; |
1da177e4 LT |
1735 | } |
1736 | ||
4be44fcd | 1737 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1738 | { |
4be44fcd | 1739 | int status; |
ff102ea9 | 1740 | struct acpi_video_device *dev, *next; |
1da177e4 | 1741 | |
bbac81f5 | 1742 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1743 | |
ff102ea9 | 1744 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 1745 | |
ff102ea9 | 1746 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
1747 | if (ACPI_FAILURE(status)) |
1748 | printk(KERN_WARNING PREFIX | |
1749 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1750 | |
ff102ea9 DT |
1751 | if (dev->brightness) { |
1752 | kfree(dev->brightness->levels); | |
1753 | kfree(dev->brightness); | |
1754 | } | |
1755 | list_del(&dev->entry); | |
1756 | kfree(dev); | |
1da177e4 LT |
1757 | } |
1758 | ||
bbac81f5 | 1759 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1760 | |
d550d98d | 1761 | return 0; |
1da177e4 LT |
1762 | } |
1763 | ||
1764 | /* acpi_video interface */ | |
1765 | ||
4be44fcd | 1766 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 1767 | { |
a21101c4 | 1768 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
1769 | } |
1770 | ||
4be44fcd | 1771 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1772 | { |
1773 | return acpi_video_bus_DOS(video, 0, 1); | |
1774 | } | |
1775 | ||
4be44fcd | 1776 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1777 | { |
50dd0969 | 1778 | struct acpi_video_bus *video = data; |
4be44fcd | 1779 | struct acpi_device *device = NULL; |
e9dab196 LY |
1780 | struct input_dev *input; |
1781 | int keycode; | |
1782 | ||
1da177e4 | 1783 | if (!video) |
d550d98d | 1784 | return; |
1da177e4 | 1785 | |
e6afa0de | 1786 | device = video->device; |
e9dab196 | 1787 | input = video->input; |
1da177e4 LT |
1788 | |
1789 | switch (event) { | |
98fb8fe1 | 1790 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 1791 | * most likely via hotkey. */ |
14e04fb3 | 1792 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1793 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1794 | break; |
1795 | ||
98fb8fe1 | 1796 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1797 | * connector. */ |
1798 | acpi_video_device_enumerate(video); | |
1799 | acpi_video_device_rebind(video); | |
1800 | acpi_video_switch_output(video, event); | |
14e04fb3 | 1801 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1802 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1803 | break; |
1804 | ||
4be44fcd | 1805 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
e9dab196 | 1806 | acpi_video_switch_output(video, event); |
25c87f7f | 1807 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1808 | keycode = KEY_SWITCHVIDEOMODE; |
1809 | break; | |
4be44fcd | 1810 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
e9dab196 | 1811 | acpi_video_switch_output(video, event); |
25c87f7f | 1812 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1813 | keycode = KEY_VIDEO_NEXT; |
1814 | break; | |
4be44fcd | 1815 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
1da177e4 | 1816 | acpi_video_switch_output(video, event); |
14e04fb3 | 1817 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1818 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
1819 | break; |
1820 | ||
1821 | default: | |
e9dab196 | 1822 | keycode = KEY_UNKNOWN; |
1da177e4 | 1823 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1824 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1825 | break; |
1826 | } | |
1827 | ||
e9dab196 LY |
1828 | input_report_key(input, keycode, 1); |
1829 | input_sync(input); | |
1830 | input_report_key(input, keycode, 0); | |
1831 | input_sync(input); | |
1832 | ||
d550d98d | 1833 | return; |
1da177e4 LT |
1834 | } |
1835 | ||
4be44fcd | 1836 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1837 | { |
50dd0969 | 1838 | struct acpi_video_device *video_device = data; |
4be44fcd | 1839 | struct acpi_device *device = NULL; |
e9dab196 LY |
1840 | struct acpi_video_bus *bus; |
1841 | struct input_dev *input; | |
1842 | int keycode; | |
1da177e4 | 1843 | |
1da177e4 | 1844 | if (!video_device) |
d550d98d | 1845 | return; |
1da177e4 | 1846 | |
e6afa0de | 1847 | device = video_device->dev; |
e9dab196 LY |
1848 | bus = video_device->video; |
1849 | input = bus->input; | |
1da177e4 LT |
1850 | |
1851 | switch (event) { | |
4be44fcd | 1852 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
e9dab196 | 1853 | acpi_video_switch_brightness(video_device, event); |
14e04fb3 | 1854 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1855 | keycode = KEY_BRIGHTNESS_CYCLE; |
1856 | break; | |
4be44fcd | 1857 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
e9dab196 | 1858 | acpi_video_switch_brightness(video_device, event); |
25c87f7f | 1859 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1860 | keycode = KEY_BRIGHTNESSUP; |
1861 | break; | |
4be44fcd | 1862 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
e9dab196 | 1863 | acpi_video_switch_brightness(video_device, event); |
25c87f7f | 1864 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1865 | keycode = KEY_BRIGHTNESSDOWN; |
1866 | break; | |
4be44fcd | 1867 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
e9dab196 | 1868 | acpi_video_switch_brightness(video_device, event); |
25c87f7f | 1869 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1870 | keycode = KEY_BRIGHTNESS_ZERO; |
1871 | break; | |
4be44fcd LB |
1872 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
1873 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1874 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1875 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
1876 | break; |
1877 | default: | |
e9dab196 | 1878 | keycode = KEY_UNKNOWN; |
1da177e4 | 1879 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1880 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1881 | break; |
1882 | } | |
e9dab196 LY |
1883 | |
1884 | input_report_key(input, keycode, 1); | |
1885 | input_sync(input); | |
1886 | input_report_key(input, keycode, 0); | |
1887 | input_sync(input); | |
1888 | ||
d550d98d | 1889 | return; |
1da177e4 LT |
1890 | } |
1891 | ||
e6d9da1d | 1892 | static int instance; |
4be44fcd | 1893 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1894 | { |
f51e8391 DT |
1895 | acpi_status status; |
1896 | struct acpi_video_bus *video; | |
e9dab196 | 1897 | struct input_dev *input; |
f51e8391 | 1898 | int error; |
1da177e4 | 1899 | |
36bcbec7 | 1900 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 1901 | if (!video) |
d550d98d | 1902 | return -ENOMEM; |
1da177e4 | 1903 | |
e6d9da1d ZR |
1904 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
1905 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
1906 | if (instance) | |
1907 | device->pnp.bus_id[3] = '0' + instance; | |
1908 | instance ++; | |
1909 | } | |
1910 | ||
e6afa0de | 1911 | video->device = device; |
1da177e4 LT |
1912 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
1913 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1914 | acpi_driver_data(device) = video; | |
1915 | ||
1916 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
1917 | error = acpi_video_bus_check(video); |
1918 | if (error) | |
1919 | goto err_free_video; | |
1da177e4 | 1920 | |
f51e8391 DT |
1921 | error = acpi_video_bus_add_fs(device); |
1922 | if (error) | |
1923 | goto err_free_video; | |
1da177e4 | 1924 | |
bbac81f5 | 1925 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
1926 | INIT_LIST_HEAD(&video->video_device_list); |
1927 | ||
1928 | acpi_video_bus_get_devices(video, device); | |
1929 | acpi_video_bus_start_devices(video); | |
1930 | ||
90130268 | 1931 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1932 | ACPI_DEVICE_NOTIFY, |
1933 | acpi_video_bus_notify, video); | |
1da177e4 LT |
1934 | if (ACPI_FAILURE(status)) { |
1935 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1936 | "Error installing notify handler\n")); |
f51e8391 DT |
1937 | error = -ENODEV; |
1938 | goto err_stop_video; | |
1da177e4 LT |
1939 | } |
1940 | ||
e9dab196 | 1941 | video->input = input = input_allocate_device(); |
f51e8391 DT |
1942 | if (!input) { |
1943 | error = -ENOMEM; | |
1944 | goto err_uninstall_notify; | |
1945 | } | |
e9dab196 LY |
1946 | |
1947 | snprintf(video->phys, sizeof(video->phys), | |
1948 | "%s/video/input0", acpi_device_hid(video->device)); | |
1949 | ||
1950 | input->name = acpi_device_name(video->device); | |
1951 | input->phys = video->phys; | |
1952 | input->id.bustype = BUS_HOST; | |
1953 | input->id.product = 0x06; | |
91c05c66 | 1954 | input->dev.parent = &device->dev; |
e9dab196 LY |
1955 | input->evbit[0] = BIT(EV_KEY); |
1956 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
1957 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
1958 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
1959 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
1960 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
1961 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
1962 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
1963 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
1964 | set_bit(KEY_UNKNOWN, input->keybit); | |
e9dab196 | 1965 | |
f51e8391 DT |
1966 | error = input_register_device(input); |
1967 | if (error) | |
1968 | goto err_free_input_dev; | |
e9dab196 | 1969 | |
1da177e4 | 1970 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
1971 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
1972 | video->flags.multihead ? "yes" : "no", | |
1973 | video->flags.rom ? "yes" : "no", | |
1974 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 1975 | |
f51e8391 DT |
1976 | return 0; |
1977 | ||
1978 | err_free_input_dev: | |
1979 | input_free_device(input); | |
1980 | err_uninstall_notify: | |
1981 | acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, | |
1982 | acpi_video_bus_notify); | |
1983 | err_stop_video: | |
1984 | acpi_video_bus_stop_devices(video); | |
1985 | acpi_video_bus_put_devices(video); | |
1986 | kfree(video->attached_array); | |
1987 | acpi_video_bus_remove_fs(device); | |
1988 | err_free_video: | |
1989 | kfree(video); | |
1990 | acpi_driver_data(device) = NULL; | |
1da177e4 | 1991 | |
f51e8391 | 1992 | return error; |
1da177e4 LT |
1993 | } |
1994 | ||
4be44fcd | 1995 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 1996 | { |
4be44fcd LB |
1997 | acpi_status status = 0; |
1998 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 1999 | |
1da177e4 LT |
2000 | |
2001 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 2002 | return -EINVAL; |
1da177e4 | 2003 | |
50dd0969 | 2004 | video = acpi_driver_data(device); |
1da177e4 LT |
2005 | |
2006 | acpi_video_bus_stop_devices(video); | |
2007 | ||
90130268 | 2008 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
2009 | ACPI_DEVICE_NOTIFY, |
2010 | acpi_video_bus_notify); | |
1da177e4 LT |
2011 | |
2012 | acpi_video_bus_put_devices(video); | |
2013 | acpi_video_bus_remove_fs(device); | |
2014 | ||
e9dab196 | 2015 | input_unregister_device(video->input); |
6044ec88 | 2016 | kfree(video->attached_array); |
1da177e4 LT |
2017 | kfree(video); |
2018 | ||
d550d98d | 2019 | return 0; |
1da177e4 LT |
2020 | } |
2021 | ||
4be44fcd | 2022 | static int __init acpi_video_init(void) |
1da177e4 | 2023 | { |
4be44fcd | 2024 | int result = 0; |
1da177e4 | 2025 | |
1da177e4 LT |
2026 | |
2027 | /* | |
4be44fcd LB |
2028 | acpi_dbg_level = 0xFFFFFFFF; |
2029 | acpi_dbg_layer = 0x08000000; | |
2030 | */ | |
1da177e4 LT |
2031 | |
2032 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2033 | if (!acpi_video_dir) | |
d550d98d | 2034 | return -ENODEV; |
1da177e4 LT |
2035 | acpi_video_dir->owner = THIS_MODULE; |
2036 | ||
2037 | result = acpi_bus_register_driver(&acpi_video_bus); | |
2038 | if (result < 0) { | |
2039 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 2040 | return -ENODEV; |
1da177e4 LT |
2041 | } |
2042 | ||
d550d98d | 2043 | return 0; |
1da177e4 LT |
2044 | } |
2045 | ||
4be44fcd | 2046 | static void __exit acpi_video_exit(void) |
1da177e4 | 2047 | { |
1da177e4 LT |
2048 | |
2049 | acpi_bus_unregister_driver(&acpi_video_bus); | |
2050 | ||
2051 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2052 | ||
d550d98d | 2053 | return; |
1da177e4 LT |
2054 | } |
2055 | ||
2056 | module_init(acpi_video_init); | |
2057 | module_exit(acpi_video_exit); |