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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 | ||
8a681a4d ZR |
75 | static int brightness_switch_enabled = 1; |
76 | module_param(brightness_switch_enabled, bool, 0644); | |
77 | ||
4be44fcd LB |
78 | static int acpi_video_bus_add(struct acpi_device *device); |
79 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
1da177e4 | 80 | |
1ba90e3a TR |
81 | static const struct acpi_device_id video_device_ids[] = { |
82 | {ACPI_VIDEO_HID, 0}, | |
83 | {"", 0}, | |
84 | }; | |
85 | MODULE_DEVICE_TABLE(acpi, video_device_ids); | |
86 | ||
1da177e4 | 87 | static struct acpi_driver acpi_video_bus = { |
c2b6705b | 88 | .name = "video", |
1da177e4 | 89 | .class = ACPI_VIDEO_CLASS, |
1ba90e3a | 90 | .ids = video_device_ids, |
1da177e4 LT |
91 | .ops = { |
92 | .add = acpi_video_bus_add, | |
93 | .remove = acpi_video_bus_remove, | |
4be44fcd | 94 | }, |
1da177e4 LT |
95 | }; |
96 | ||
97 | struct acpi_video_bus_flags { | |
4be44fcd LB |
98 | u8 multihead:1; /* can switch video heads */ |
99 | u8 rom:1; /* can retrieve a video rom */ | |
100 | u8 post:1; /* can configure the head to */ | |
101 | u8 reserved:5; | |
1da177e4 LT |
102 | }; |
103 | ||
104 | struct acpi_video_bus_cap { | |
4be44fcd LB |
105 | u8 _DOS:1; /*Enable/Disable output switching */ |
106 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
107 | u8 _ROM:1; /*Get ROM Data */ | |
108 | u8 _GPD:1; /*Get POST Device */ | |
109 | u8 _SPD:1; /*Set POST Device */ | |
110 | u8 _VPO:1; /*Video POST Options */ | |
111 | u8 reserved:2; | |
1da177e4 LT |
112 | }; |
113 | ||
4be44fcd LB |
114 | struct acpi_video_device_attrib { |
115 | u32 display_index:4; /* A zero-based instance of the Display */ | |
98fb8fe1 | 116 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
4be44fcd | 117 | u32 display_type:4; /*Describe the specific type in use */ |
98fb8fe1 | 118 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
4be44fcd LB |
119 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
120 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
121 | the VGA device. */ | |
122 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
123 | u32 reserved:10; /*Must be 0 */ | |
124 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
125 | }; |
126 | ||
127 | struct acpi_video_enumerated_device { | |
128 | union { | |
129 | u32 int_val; | |
4be44fcd | 130 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
131 | } value; |
132 | struct acpi_video_device *bind_info; | |
133 | }; | |
134 | ||
135 | struct acpi_video_bus { | |
e6afa0de | 136 | struct acpi_device *device; |
4be44fcd | 137 | u8 dos_setting; |
1da177e4 | 138 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
139 | u8 attached_count; |
140 | struct acpi_video_bus_cap cap; | |
1da177e4 | 141 | struct acpi_video_bus_flags flags; |
4be44fcd | 142 | struct list_head video_device_list; |
bbac81f5 | 143 | struct mutex device_list_lock; /* protects video_device_list */ |
4be44fcd | 144 | struct proc_dir_entry *dir; |
e9dab196 LY |
145 | struct input_dev *input; |
146 | char phys[32]; /* for input device */ | |
1da177e4 LT |
147 | }; |
148 | ||
149 | struct acpi_video_device_flags { | |
4be44fcd LB |
150 | u8 crt:1; |
151 | u8 lcd:1; | |
152 | u8 tvout:1; | |
82cae999 | 153 | u8 dvi:1; |
4be44fcd LB |
154 | u8 bios:1; |
155 | u8 unknown:1; | |
82cae999 | 156 | u8 reserved:2; |
1da177e4 LT |
157 | }; |
158 | ||
159 | struct acpi_video_device_cap { | |
4be44fcd LB |
160 | u8 _ADR:1; /*Return the unique ID */ |
161 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
162 | u8 _BCM:1; /*Set the brightness level */ | |
2f3d000a | 163 | u8 _BQC:1; /* Get current brightness level */ |
4be44fcd LB |
164 | u8 _DDC:1; /*Return the EDID for this device */ |
165 | u8 _DCS:1; /*Return status of output device */ | |
166 | u8 _DGS:1; /*Query graphics state */ | |
167 | u8 _DSS:1; /*Device state set */ | |
1da177e4 LT |
168 | }; |
169 | ||
170 | struct acpi_video_device_brightness { | |
4be44fcd LB |
171 | int curr; |
172 | int count; | |
173 | int *levels; | |
1da177e4 LT |
174 | }; |
175 | ||
176 | struct acpi_video_device { | |
4be44fcd LB |
177 | unsigned long device_id; |
178 | struct acpi_video_device_flags flags; | |
179 | struct acpi_video_device_cap cap; | |
180 | struct list_head entry; | |
181 | struct acpi_video_bus *video; | |
182 | struct acpi_device *dev; | |
1da177e4 | 183 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 184 | struct backlight_device *backlight; |
23b0f015 | 185 | struct output_device *output_dev; |
1da177e4 LT |
186 | }; |
187 | ||
1da177e4 LT |
188 | /* bus */ |
189 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
190 | static struct file_operations acpi_video_bus_info_fops = { | |
4be44fcd LB |
191 | .open = acpi_video_bus_info_open_fs, |
192 | .read = seq_read, | |
193 | .llseek = seq_lseek, | |
194 | .release = single_release, | |
1da177e4 LT |
195 | }; |
196 | ||
197 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
198 | static struct file_operations acpi_video_bus_ROM_fops = { | |
4be44fcd LB |
199 | .open = acpi_video_bus_ROM_open_fs, |
200 | .read = seq_read, | |
201 | .llseek = seq_lseek, | |
202 | .release = single_release, | |
1da177e4 LT |
203 | }; |
204 | ||
4be44fcd LB |
205 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
206 | struct file *file); | |
1da177e4 | 207 | static struct file_operations acpi_video_bus_POST_info_fops = { |
4be44fcd LB |
208 | .open = acpi_video_bus_POST_info_open_fs, |
209 | .read = seq_read, | |
210 | .llseek = seq_lseek, | |
211 | .release = single_release, | |
1da177e4 LT |
212 | }; |
213 | ||
214 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
215 | static struct file_operations acpi_video_bus_POST_fops = { | |
4be44fcd LB |
216 | .open = acpi_video_bus_POST_open_fs, |
217 | .read = seq_read, | |
218 | .llseek = seq_lseek, | |
219 | .release = single_release, | |
1da177e4 LT |
220 | }; |
221 | ||
1da177e4 LT |
222 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
223 | static struct file_operations acpi_video_bus_DOS_fops = { | |
4be44fcd LB |
224 | .open = acpi_video_bus_DOS_open_fs, |
225 | .read = seq_read, | |
226 | .llseek = seq_lseek, | |
227 | .release = single_release, | |
1da177e4 LT |
228 | }; |
229 | ||
230 | /* device */ | |
4be44fcd LB |
231 | static int acpi_video_device_info_open_fs(struct inode *inode, |
232 | struct file *file); | |
1da177e4 | 233 | static struct file_operations acpi_video_device_info_fops = { |
4be44fcd LB |
234 | .open = acpi_video_device_info_open_fs, |
235 | .read = seq_read, | |
236 | .llseek = seq_lseek, | |
237 | .release = single_release, | |
1da177e4 LT |
238 | }; |
239 | ||
4be44fcd LB |
240 | static int acpi_video_device_state_open_fs(struct inode *inode, |
241 | struct file *file); | |
1da177e4 | 242 | static struct file_operations acpi_video_device_state_fops = { |
4be44fcd LB |
243 | .open = acpi_video_device_state_open_fs, |
244 | .read = seq_read, | |
245 | .llseek = seq_lseek, | |
246 | .release = single_release, | |
1da177e4 LT |
247 | }; |
248 | ||
4be44fcd LB |
249 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
250 | struct file *file); | |
1da177e4 | 251 | static struct file_operations acpi_video_device_brightness_fops = { |
4be44fcd LB |
252 | .open = acpi_video_device_brightness_open_fs, |
253 | .read = seq_read, | |
254 | .llseek = seq_lseek, | |
255 | .release = single_release, | |
1da177e4 LT |
256 | }; |
257 | ||
4be44fcd LB |
258 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
259 | struct file *file); | |
1da177e4 | 260 | static struct file_operations acpi_video_device_EDID_fops = { |
4be44fcd LB |
261 | .open = acpi_video_device_EDID_open_fs, |
262 | .read = seq_read, | |
263 | .llseek = seq_lseek, | |
264 | .release = single_release, | |
1da177e4 LT |
265 | }; |
266 | ||
4be44fcd | 267 | static char device_decode[][30] = { |
1da177e4 LT |
268 | "motherboard VGA device", |
269 | "PCI VGA device", | |
270 | "AGP VGA device", | |
271 | "UNKNOWN", | |
272 | }; | |
273 | ||
4be44fcd LB |
274 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
275 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
276 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
277 | struct acpi_video_device *device); | |
1da177e4 | 278 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
4be44fcd | 279 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event); |
2f3d000a YL |
280 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
281 | int level); | |
282 | static int acpi_video_device_lcd_get_level_current( | |
283 | struct acpi_video_device *device, | |
284 | unsigned long *level); | |
4be44fcd LB |
285 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
286 | u32 level_current, u32 event); | |
287 | static void acpi_video_switch_brightness(struct acpi_video_device *device, | |
288 | int event); | |
23b0f015 LY |
289 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
290 | unsigned long *state); | |
291 | static int acpi_video_output_get(struct output_device *od); | |
292 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 293 | |
2f3d000a YL |
294 | /*backlight device sysfs support*/ |
295 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
296 | { | |
297 | unsigned long cur_level; | |
298 | struct acpi_video_device *vd = | |
655bfd7a | 299 | (struct acpi_video_device *)bl_get_data(bd); |
2f3d000a YL |
300 | acpi_video_device_lcd_get_level_current(vd, &cur_level); |
301 | return (int) cur_level; | |
302 | } | |
303 | ||
304 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
305 | { | |
599a52d1 | 306 | int request_level = bd->props.brightness; |
2f3d000a | 307 | struct acpi_video_device *vd = |
655bfd7a | 308 | (struct acpi_video_device *)bl_get_data(bd); |
2f3d000a YL |
309 | acpi_video_device_lcd_set_level(vd, request_level); |
310 | return 0; | |
311 | } | |
312 | ||
599a52d1 RP |
313 | static struct backlight_ops acpi_backlight_ops = { |
314 | .get_brightness = acpi_video_get_brightness, | |
315 | .update_status = acpi_video_set_brightness, | |
316 | }; | |
317 | ||
23b0f015 LY |
318 | /*video output device sysfs support*/ |
319 | static int acpi_video_output_get(struct output_device *od) | |
320 | { | |
321 | unsigned long state; | |
322 | struct acpi_video_device *vd = | |
60043428 | 323 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
324 | acpi_video_device_get_state(vd, &state); |
325 | return (int)state; | |
326 | } | |
327 | ||
328 | static int acpi_video_output_set(struct output_device *od) | |
329 | { | |
330 | unsigned long state = od->request_state; | |
331 | struct acpi_video_device *vd= | |
60043428 | 332 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
333 | return acpi_video_device_set_state(vd, state); |
334 | } | |
335 | ||
336 | static struct output_properties acpi_output_properties = { | |
337 | .set_state = acpi_video_output_set, | |
338 | .get_status = acpi_video_output_get, | |
339 | }; | |
1da177e4 LT |
340 | /* -------------------------------------------------------------------------- |
341 | Video Management | |
342 | -------------------------------------------------------------------------- */ | |
343 | ||
344 | /* device */ | |
345 | ||
346 | static int | |
4be44fcd | 347 | acpi_video_device_query(struct acpi_video_device *device, unsigned long *state) |
1da177e4 | 348 | { |
4be44fcd | 349 | int status; |
90130268 PM |
350 | |
351 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 352 | |
d550d98d | 353 | return status; |
1da177e4 LT |
354 | } |
355 | ||
356 | static int | |
4be44fcd LB |
357 | acpi_video_device_get_state(struct acpi_video_device *device, |
358 | unsigned long *state) | |
1da177e4 | 359 | { |
4be44fcd | 360 | int status; |
1da177e4 | 361 | |
90130268 | 362 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 363 | |
d550d98d | 364 | return status; |
1da177e4 LT |
365 | } |
366 | ||
367 | static int | |
4be44fcd | 368 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 369 | { |
4be44fcd LB |
370 | int status; |
371 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
372 | struct acpi_object_list args = { 1, &arg0 }; | |
824b558b | 373 | unsigned long ret; |
1da177e4 | 374 | |
1da177e4 LT |
375 | |
376 | arg0.integer.value = state; | |
90130268 | 377 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 378 | |
d550d98d | 379 | return status; |
1da177e4 LT |
380 | } |
381 | ||
382 | static int | |
4be44fcd LB |
383 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
384 | union acpi_object **levels) | |
1da177e4 | 385 | { |
4be44fcd LB |
386 | int status; |
387 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
388 | union acpi_object *obj; | |
1da177e4 | 389 | |
1da177e4 LT |
390 | |
391 | *levels = NULL; | |
392 | ||
90130268 | 393 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 394 | if (!ACPI_SUCCESS(status)) |
d550d98d | 395 | return status; |
4be44fcd | 396 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 397 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 398 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
399 | status = -EFAULT; |
400 | goto err; | |
401 | } | |
402 | ||
403 | *levels = obj; | |
404 | ||
d550d98d | 405 | return 0; |
1da177e4 | 406 | |
4be44fcd | 407 | err: |
6044ec88 | 408 | kfree(buffer.pointer); |
1da177e4 | 409 | |
d550d98d | 410 | return status; |
1da177e4 LT |
411 | } |
412 | ||
413 | static int | |
4be44fcd | 414 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 415 | { |
4500ca8e | 416 | int status = AE_OK; |
4be44fcd LB |
417 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
418 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 419 | |
1da177e4 LT |
420 | |
421 | arg0.integer.value = level; | |
1da177e4 | 422 | |
4500ca8e AS |
423 | if (device->cap._BCM) |
424 | status = acpi_evaluate_object(device->dev->handle, "_BCM", | |
425 | &args, NULL); | |
426 | device->brightness->curr = level; | |
d550d98d | 427 | return status; |
1da177e4 LT |
428 | } |
429 | ||
430 | static int | |
4be44fcd LB |
431 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
432 | unsigned long *level) | |
1da177e4 | 433 | { |
4500ca8e AS |
434 | if (device->cap._BQC) |
435 | return acpi_evaluate_integer(device->dev->handle, "_BQC", NULL, | |
436 | level); | |
437 | *level = device->brightness->curr; | |
438 | return AE_OK; | |
1da177e4 LT |
439 | } |
440 | ||
441 | static int | |
4be44fcd LB |
442 | acpi_video_device_EDID(struct acpi_video_device *device, |
443 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 444 | { |
4be44fcd LB |
445 | int status; |
446 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
447 | union acpi_object *obj; | |
448 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
449 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 450 | |
1da177e4 LT |
451 | |
452 | *edid = NULL; | |
453 | ||
454 | if (!device) | |
d550d98d | 455 | return -ENODEV; |
1da177e4 LT |
456 | if (length == 128) |
457 | arg0.integer.value = 1; | |
458 | else if (length == 256) | |
459 | arg0.integer.value = 2; | |
460 | else | |
d550d98d | 461 | return -EINVAL; |
1da177e4 | 462 | |
90130268 | 463 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 464 | if (ACPI_FAILURE(status)) |
d550d98d | 465 | return -ENODEV; |
1da177e4 | 466 | |
50dd0969 | 467 | obj = buffer.pointer; |
1da177e4 LT |
468 | |
469 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
470 | *edid = obj; | |
471 | else { | |
6468463a | 472 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
473 | status = -EFAULT; |
474 | kfree(obj); | |
475 | } | |
476 | ||
d550d98d | 477 | return status; |
1da177e4 LT |
478 | } |
479 | ||
1da177e4 LT |
480 | /* bus */ |
481 | ||
482 | static int | |
4be44fcd | 483 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 484 | { |
4be44fcd LB |
485 | int status; |
486 | unsigned long tmp; | |
487 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
488 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 489 | |
1da177e4 LT |
490 | |
491 | arg0.integer.value = option; | |
492 | ||
90130268 | 493 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 494 | if (ACPI_SUCCESS(status)) |
4be44fcd | 495 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 496 | |
d550d98d | 497 | return status; |
1da177e4 LT |
498 | } |
499 | ||
500 | static int | |
4be44fcd | 501 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) |
1da177e4 LT |
502 | { |
503 | int status; | |
504 | ||
90130268 | 505 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 506 | |
d550d98d | 507 | return status; |
1da177e4 LT |
508 | } |
509 | ||
510 | static int | |
4be44fcd LB |
511 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
512 | unsigned long *options) | |
1da177e4 | 513 | { |
4be44fcd | 514 | int status; |
1da177e4 | 515 | |
90130268 | 516 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
517 | *options &= 3; |
518 | ||
d550d98d | 519 | return status; |
1da177e4 LT |
520 | } |
521 | ||
522 | /* | |
523 | * Arg: | |
524 | * video : video bus device pointer | |
525 | * bios_flag : | |
526 | * 0. The system BIOS should NOT automatically switch(toggle) | |
527 | * the active display output. | |
528 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 529 | * active display output. No switch event. |
1da177e4 LT |
530 | * 2. The _DGS value should be locked. |
531 | * 3. The system BIOS should not automatically switch (toggle) the | |
532 | * active display output, but instead generate the display switch | |
533 | * event notify code. | |
534 | * lcd_flag : | |
535 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 536 | * of the LCD when the power changes from AC to DC |
1da177e4 | 537 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 538 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
539 | * Return Value: |
540 | * -1 wrong arg. | |
541 | */ | |
542 | ||
543 | static int | |
4be44fcd | 544 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 545 | { |
4be44fcd LB |
546 | acpi_integer status = 0; |
547 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
548 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 549 | |
1da177e4 | 550 | |
4be44fcd | 551 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
552 | status = -1; |
553 | goto Failed; | |
554 | } | |
555 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
556 | video->dos_setting = arg0.integer.value; | |
90130268 | 557 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 558 | |
4be44fcd | 559 | Failed: |
d550d98d | 560 | return status; |
1da177e4 LT |
561 | } |
562 | ||
563 | /* | |
564 | * Arg: | |
565 | * device : video output device (LCD, CRT, ..) | |
566 | * | |
567 | * Return Value: | |
568 | * None | |
569 | * | |
98fb8fe1 | 570 | * Find out all required AML methods defined under the output |
1da177e4 LT |
571 | * device. |
572 | */ | |
573 | ||
4be44fcd | 574 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 575 | { |
1da177e4 LT |
576 | acpi_handle h_dummy1; |
577 | int i; | |
2f3d000a | 578 | u32 max_level = 0; |
1da177e4 LT |
579 | union acpi_object *obj = NULL; |
580 | struct acpi_video_device_brightness *br = NULL; | |
581 | ||
1da177e4 | 582 | |
98934def | 583 | memset(&device->cap, 0, sizeof(device->cap)); |
1da177e4 | 584 | |
90130268 | 585 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
586 | device->cap._ADR = 1; |
587 | } | |
90130268 | 588 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 589 | device->cap._BCL = 1; |
1da177e4 | 590 | } |
90130268 | 591 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 592 | device->cap._BCM = 1; |
1da177e4 | 593 | } |
2f3d000a YL |
594 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
595 | device->cap._BQC = 1; | |
90130268 | 596 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 597 | device->cap._DDC = 1; |
1da177e4 | 598 | } |
90130268 | 599 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
600 | device->cap._DCS = 1; |
601 | } | |
90130268 | 602 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
603 | device->cap._DGS = 1; |
604 | } | |
90130268 | 605 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
606 | device->cap._DSS = 1; |
607 | } | |
608 | ||
f70ac0e9 DK |
609 | if (ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { |
610 | ||
611 | if (obj->package.count >= 2) { | |
612 | int count = 0; | |
613 | union acpi_object *o; | |
614 | ||
615 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
616 | if (!br) { | |
617 | printk(KERN_ERR "can't allocate memory\n"); | |
1da177e4 | 618 | } else { |
f70ac0e9 DK |
619 | br->levels = kmalloc(obj->package.count * |
620 | sizeof *(br->levels), GFP_KERNEL); | |
621 | if (!br->levels) | |
622 | goto out; | |
623 | ||
624 | for (i = 0; i < obj->package.count; i++) { | |
625 | o = (union acpi_object *)&obj->package. | |
626 | elements[i]; | |
627 | if (o->type != ACPI_TYPE_INTEGER) { | |
628 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
629 | continue; | |
630 | } | |
631 | br->levels[count] = (u32) o->integer.value; | |
632 | ||
633 | if (br->levels[count] > max_level) | |
634 | max_level = br->levels[count]; | |
635 | count++; | |
636 | } | |
637 | out: | |
638 | if (count < 2) { | |
639 | kfree(br->levels); | |
640 | kfree(br); | |
641 | } else { | |
642 | br->count = count; | |
643 | device->brightness = br; | |
644 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
645 | "found %d brightness levels\n", | |
646 | count)); | |
647 | } | |
1da177e4 LT |
648 | } |
649 | } | |
f70ac0e9 DK |
650 | |
651 | } else { | |
652 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available LCD brightness level\n")); | |
1da177e4 LT |
653 | } |
654 | ||
d1dd0c23 | 655 | kfree(obj); |
1da177e4 | 656 | |
f70ac0e9 | 657 | if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){ |
2f3d000a YL |
658 | unsigned long tmp; |
659 | static int count = 0; | |
660 | char *name; | |
2f3d000a YL |
661 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
662 | if (!name) | |
663 | return; | |
664 | ||
2f3d000a | 665 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 666 | acpi_video_device_lcd_get_level_current(device, &tmp); |
2f3d000a | 667 | device->backlight = backlight_device_register(name, |
599a52d1 RP |
668 | NULL, device, &acpi_backlight_ops); |
669 | device->backlight->props.max_brightness = max_level; | |
670 | device->backlight->props.brightness = (int)tmp; | |
671 | backlight_update_status(device->backlight); | |
672 | ||
2f3d000a YL |
673 | kfree(name); |
674 | } | |
23b0f015 LY |
675 | if (device->cap._DCS && device->cap._DSS){ |
676 | static int count = 0; | |
677 | char *name; | |
678 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
679 | if (!name) | |
680 | return; | |
681 | sprintf(name, "acpi_video%d", count++); | |
682 | device->output_dev = video_output_register(name, | |
683 | NULL, device, &acpi_output_properties); | |
684 | kfree(name); | |
685 | } | |
d550d98d | 686 | return; |
1da177e4 LT |
687 | } |
688 | ||
689 | /* | |
690 | * Arg: | |
691 | * device : video output device (VGA) | |
692 | * | |
693 | * Return Value: | |
694 | * None | |
695 | * | |
98fb8fe1 | 696 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
697 | */ |
698 | ||
4be44fcd | 699 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 700 | { |
4be44fcd | 701 | acpi_handle h_dummy1; |
1da177e4 | 702 | |
98934def | 703 | memset(&video->cap, 0, sizeof(video->cap)); |
90130268 | 704 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
705 | video->cap._DOS = 1; |
706 | } | |
90130268 | 707 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
708 | video->cap._DOD = 1; |
709 | } | |
90130268 | 710 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
711 | video->cap._ROM = 1; |
712 | } | |
90130268 | 713 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
714 | video->cap._GPD = 1; |
715 | } | |
90130268 | 716 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
717 | video->cap._SPD = 1; |
718 | } | |
90130268 | 719 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
720 | video->cap._VPO = 1; |
721 | } | |
722 | } | |
723 | ||
724 | /* | |
725 | * Check whether the video bus device has required AML method to | |
726 | * support the desired features | |
727 | */ | |
728 | ||
4be44fcd | 729 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 730 | { |
4be44fcd | 731 | acpi_status status = -ENOENT; |
1da177e4 | 732 | |
1da177e4 LT |
733 | |
734 | if (!video) | |
d550d98d | 735 | return -EINVAL; |
1da177e4 LT |
736 | |
737 | /* Since there is no HID, CID and so on for VGA driver, we have | |
738 | * to check well known required nodes. | |
739 | */ | |
740 | ||
98fb8fe1 | 741 | /* Does this device support video switching? */ |
4be44fcd | 742 | if (video->cap._DOS) { |
1da177e4 LT |
743 | video->flags.multihead = 1; |
744 | status = 0; | |
745 | } | |
746 | ||
98fb8fe1 | 747 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 748 | if (video->cap._ROM) { |
1da177e4 LT |
749 | video->flags.rom = 1; |
750 | status = 0; | |
751 | } | |
752 | ||
98fb8fe1 | 753 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 754 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
755 | video->flags.post = 1; |
756 | status = 0; | |
757 | } | |
758 | ||
d550d98d | 759 | return status; |
1da177e4 LT |
760 | } |
761 | ||
762 | /* -------------------------------------------------------------------------- | |
763 | FS Interface (/proc) | |
764 | -------------------------------------------------------------------------- */ | |
765 | ||
4be44fcd | 766 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
767 | |
768 | /* video devices */ | |
769 | ||
4be44fcd | 770 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 771 | { |
50dd0969 | 772 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 773 | |
1da177e4 LT |
774 | |
775 | if (!dev) | |
776 | goto end; | |
777 | ||
778 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
779 | seq_printf(seq, "type: "); | |
780 | if (dev->flags.crt) | |
781 | seq_printf(seq, "CRT\n"); | |
782 | else if (dev->flags.lcd) | |
783 | seq_printf(seq, "LCD\n"); | |
784 | else if (dev->flags.tvout) | |
785 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
786 | else if (dev->flags.dvi) |
787 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
788 | else |
789 | seq_printf(seq, "UNKNOWN\n"); | |
790 | ||
4be44fcd | 791 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 792 | |
4be44fcd | 793 | end: |
d550d98d | 794 | return 0; |
1da177e4 LT |
795 | } |
796 | ||
797 | static int | |
4be44fcd | 798 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
799 | { |
800 | return single_open(file, acpi_video_device_info_seq_show, | |
801 | PDE(inode)->data); | |
802 | } | |
803 | ||
4be44fcd | 804 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 805 | { |
4be44fcd | 806 | int status; |
50dd0969 | 807 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 808 | unsigned long state; |
1da177e4 | 809 | |
1da177e4 LT |
810 | |
811 | if (!dev) | |
812 | goto end; | |
813 | ||
814 | status = acpi_video_device_get_state(dev, &state); | |
815 | seq_printf(seq, "state: "); | |
816 | if (ACPI_SUCCESS(status)) | |
817 | seq_printf(seq, "0x%02lx\n", state); | |
818 | else | |
819 | seq_printf(seq, "<not supported>\n"); | |
820 | ||
821 | status = acpi_video_device_query(dev, &state); | |
822 | seq_printf(seq, "query: "); | |
823 | if (ACPI_SUCCESS(status)) | |
824 | seq_printf(seq, "0x%02lx\n", state); | |
825 | else | |
826 | seq_printf(seq, "<not supported>\n"); | |
827 | ||
4be44fcd | 828 | end: |
d550d98d | 829 | return 0; |
1da177e4 LT |
830 | } |
831 | ||
832 | static int | |
4be44fcd | 833 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
834 | { |
835 | return single_open(file, acpi_video_device_state_seq_show, | |
836 | PDE(inode)->data); | |
837 | } | |
838 | ||
839 | static ssize_t | |
4be44fcd LB |
840 | acpi_video_device_write_state(struct file *file, |
841 | const char __user * buffer, | |
842 | size_t count, loff_t * data) | |
1da177e4 | 843 | { |
4be44fcd | 844 | int status; |
50dd0969 JE |
845 | struct seq_file *m = file->private_data; |
846 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
847 | char str[12] = { 0 }; |
848 | u32 state = 0; | |
1da177e4 | 849 | |
1da177e4 LT |
850 | |
851 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 852 | return -EINVAL; |
1da177e4 LT |
853 | |
854 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 855 | return -EFAULT; |
1da177e4 LT |
856 | |
857 | str[count] = 0; | |
858 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 859 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
860 | |
861 | status = acpi_video_device_set_state(dev, state); | |
862 | ||
863 | if (status) | |
d550d98d | 864 | return -EFAULT; |
1da177e4 | 865 | |
d550d98d | 866 | return count; |
1da177e4 LT |
867 | } |
868 | ||
869 | static int | |
4be44fcd | 870 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 871 | { |
50dd0969 | 872 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 873 | int i; |
1da177e4 | 874 | |
1da177e4 LT |
875 | |
876 | if (!dev || !dev->brightness) { | |
877 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 878 | return 0; |
1da177e4 LT |
879 | } |
880 | ||
881 | seq_printf(seq, "levels: "); | |
882 | for (i = 0; i < dev->brightness->count; i++) | |
883 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
884 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
885 | ||
d550d98d | 886 | return 0; |
1da177e4 LT |
887 | } |
888 | ||
889 | static int | |
4be44fcd | 890 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
891 | { |
892 | return single_open(file, acpi_video_device_brightness_seq_show, | |
893 | PDE(inode)->data); | |
894 | } | |
895 | ||
896 | static ssize_t | |
4be44fcd LB |
897 | acpi_video_device_write_brightness(struct file *file, |
898 | const char __user * buffer, | |
899 | size_t count, loff_t * data) | |
1da177e4 | 900 | { |
50dd0969 JE |
901 | struct seq_file *m = file->private_data; |
902 | struct acpi_video_device *dev = m->private; | |
c88c5786 | 903 | char str[5] = { 0 }; |
4be44fcd LB |
904 | unsigned int level = 0; |
905 | int i; | |
1da177e4 | 906 | |
1da177e4 | 907 | |
59d399d3 | 908 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 909 | return -EINVAL; |
1da177e4 LT |
910 | |
911 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 912 | return -EFAULT; |
1da177e4 LT |
913 | |
914 | str[count] = 0; | |
915 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 916 | |
1da177e4 | 917 | if (level > 100) |
d550d98d | 918 | return -EFAULT; |
1da177e4 | 919 | |
98fb8fe1 | 920 | /* validate through the list of available levels */ |
1da177e4 LT |
921 | for (i = 0; i < dev->brightness->count; i++) |
922 | if (level == dev->brightness->levels[i]) { | |
4be44fcd LB |
923 | if (ACPI_SUCCESS |
924 | (acpi_video_device_lcd_set_level(dev, level))) | |
1da177e4 LT |
925 | dev->brightness->curr = level; |
926 | break; | |
927 | } | |
928 | ||
d550d98d | 929 | return count; |
1da177e4 LT |
930 | } |
931 | ||
4be44fcd | 932 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 933 | { |
50dd0969 | 934 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
935 | int status; |
936 | int i; | |
937 | union acpi_object *edid = NULL; | |
1da177e4 | 938 | |
1da177e4 LT |
939 | |
940 | if (!dev) | |
941 | goto out; | |
942 | ||
4be44fcd | 943 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 944 | if (ACPI_FAILURE(status)) { |
4be44fcd | 945 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
946 | } |
947 | ||
948 | if (ACPI_FAILURE(status)) { | |
949 | goto out; | |
950 | } | |
951 | ||
952 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
953 | for (i = 0; i < edid->buffer.length; i++) | |
954 | seq_putc(seq, edid->buffer.pointer[i]); | |
955 | } | |
956 | ||
4be44fcd | 957 | out: |
1da177e4 LT |
958 | if (!edid) |
959 | seq_printf(seq, "<not supported>\n"); | |
960 | else | |
961 | kfree(edid); | |
962 | ||
d550d98d | 963 | return 0; |
1da177e4 LT |
964 | } |
965 | ||
966 | static int | |
4be44fcd | 967 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
968 | { |
969 | return single_open(file, acpi_video_device_EDID_seq_show, | |
970 | PDE(inode)->data); | |
971 | } | |
972 | ||
4be44fcd | 973 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 974 | { |
4be44fcd | 975 | struct proc_dir_entry *entry = NULL; |
1da177e4 LT |
976 | struct acpi_video_device *vid_dev; |
977 | ||
1da177e4 LT |
978 | |
979 | if (!device) | |
d550d98d | 980 | return -ENODEV; |
1da177e4 | 981 | |
50dd0969 | 982 | vid_dev = acpi_driver_data(device); |
1da177e4 | 983 | if (!vid_dev) |
d550d98d | 984 | return -ENODEV; |
1da177e4 LT |
985 | |
986 | if (!acpi_device_dir(device)) { | |
987 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 988 | vid_dev->video->dir); |
1da177e4 | 989 | if (!acpi_device_dir(device)) |
d550d98d | 990 | return -ENODEV; |
1da177e4 LT |
991 | acpi_device_dir(device)->owner = THIS_MODULE; |
992 | } | |
993 | ||
994 | /* 'info' [R] */ | |
995 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
996 | if (!entry) | |
d550d98d | 997 | return -ENODEV; |
1da177e4 LT |
998 | else { |
999 | entry->proc_fops = &acpi_video_device_info_fops; | |
1000 | entry->data = acpi_driver_data(device); | |
1001 | entry->owner = THIS_MODULE; | |
1002 | } | |
1003 | ||
1004 | /* 'state' [R/W] */ | |
4be44fcd LB |
1005 | entry = |
1006 | create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR, | |
1007 | acpi_device_dir(device)); | |
1da177e4 | 1008 | if (!entry) |
d550d98d | 1009 | return -ENODEV; |
1da177e4 | 1010 | else { |
d479e908 | 1011 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1da177e4 | 1012 | entry->proc_fops = &acpi_video_device_state_fops; |
1da177e4 LT |
1013 | entry->data = acpi_driver_data(device); |
1014 | entry->owner = THIS_MODULE; | |
1015 | } | |
1016 | ||
1017 | /* 'brightness' [R/W] */ | |
4be44fcd LB |
1018 | entry = |
1019 | create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
1020 | acpi_device_dir(device)); | |
1da177e4 | 1021 | if (!entry) |
d550d98d | 1022 | return -ENODEV; |
1da177e4 | 1023 | else { |
d479e908 | 1024 | acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness; |
1da177e4 | 1025 | entry->proc_fops = &acpi_video_device_brightness_fops; |
1da177e4 LT |
1026 | entry->data = acpi_driver_data(device); |
1027 | entry->owner = THIS_MODULE; | |
1028 | } | |
1029 | ||
1030 | /* 'EDID' [R] */ | |
1031 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); | |
1032 | if (!entry) | |
d550d98d | 1033 | return -ENODEV; |
1da177e4 LT |
1034 | else { |
1035 | entry->proc_fops = &acpi_video_device_EDID_fops; | |
1036 | entry->data = acpi_driver_data(device); | |
1037 | entry->owner = THIS_MODULE; | |
1038 | } | |
1039 | ||
d550d98d | 1040 | return 0; |
1da177e4 LT |
1041 | } |
1042 | ||
4be44fcd | 1043 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1044 | { |
1045 | struct acpi_video_device *vid_dev; | |
1da177e4 | 1046 | |
50dd0969 | 1047 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1048 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 1049 | return -ENODEV; |
1da177e4 LT |
1050 | |
1051 | if (acpi_device_dir(device)) { | |
1052 | remove_proc_entry("info", acpi_device_dir(device)); | |
1053 | remove_proc_entry("state", acpi_device_dir(device)); | |
1054 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
1055 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
4be44fcd | 1056 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1057 | acpi_device_dir(device) = NULL; |
1058 | } | |
1059 | ||
d550d98d | 1060 | return 0; |
1da177e4 LT |
1061 | } |
1062 | ||
1da177e4 | 1063 | /* video bus */ |
4be44fcd | 1064 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1065 | { |
50dd0969 | 1066 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1067 | |
1da177e4 LT |
1068 | |
1069 | if (!video) | |
1070 | goto end; | |
1071 | ||
1072 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1073 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1074 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1075 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1076 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1077 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1078 | |
4be44fcd | 1079 | end: |
d550d98d | 1080 | return 0; |
1da177e4 LT |
1081 | } |
1082 | ||
4be44fcd | 1083 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1084 | { |
4be44fcd LB |
1085 | return single_open(file, acpi_video_bus_info_seq_show, |
1086 | PDE(inode)->data); | |
1da177e4 LT |
1087 | } |
1088 | ||
4be44fcd | 1089 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1090 | { |
50dd0969 | 1091 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1092 | |
1da177e4 LT |
1093 | |
1094 | if (!video) | |
1095 | goto end; | |
1096 | ||
1097 | printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__); | |
1098 | seq_printf(seq, "<TODO>\n"); | |
1099 | ||
4be44fcd | 1100 | end: |
d550d98d | 1101 | return 0; |
1da177e4 LT |
1102 | } |
1103 | ||
4be44fcd | 1104 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1105 | { |
1106 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1107 | } | |
1108 | ||
4be44fcd | 1109 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1110 | { |
50dd0969 | 1111 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1112 | unsigned long options; |
1113 | int status; | |
1da177e4 | 1114 | |
1da177e4 LT |
1115 | |
1116 | if (!video) | |
1117 | goto end; | |
1118 | ||
1119 | status = acpi_video_bus_POST_options(video, &options); | |
1120 | if (ACPI_SUCCESS(status)) { | |
1121 | if (!(options & 1)) { | |
4be44fcd LB |
1122 | printk(KERN_WARNING PREFIX |
1123 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1124 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1125 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 LT |
1126 | } |
1127 | printk("%lx\n", options); | |
98fb8fe1 | 1128 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1129 | if (options & 2) |
1130 | seq_printf(seq, " <PCI video>"); | |
1131 | if (options & 4) | |
1132 | seq_printf(seq, " <AGP video>"); | |
1133 | seq_putc(seq, '\n'); | |
1134 | } else | |
1135 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1136 | end: |
d550d98d | 1137 | return 0; |
1da177e4 LT |
1138 | } |
1139 | ||
1140 | static int | |
4be44fcd | 1141 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1142 | { |
4be44fcd LB |
1143 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1144 | PDE(inode)->data); | |
1da177e4 LT |
1145 | } |
1146 | ||
4be44fcd | 1147 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1148 | { |
50dd0969 | 1149 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1150 | int status; |
1151 | unsigned long id; | |
1da177e4 | 1152 | |
1da177e4 LT |
1153 | |
1154 | if (!video) | |
1155 | goto end; | |
1156 | ||
4be44fcd | 1157 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1158 | if (!ACPI_SUCCESS(status)) { |
1159 | seq_printf(seq, "<not supported>\n"); | |
1160 | goto end; | |
1161 | } | |
98fb8fe1 | 1162 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1163 | |
4be44fcd | 1164 | end: |
d550d98d | 1165 | return 0; |
1da177e4 LT |
1166 | } |
1167 | ||
4be44fcd | 1168 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1169 | { |
50dd0969 | 1170 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1171 | |
1da177e4 | 1172 | |
4be44fcd | 1173 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1174 | |
d550d98d | 1175 | return 0; |
1da177e4 LT |
1176 | } |
1177 | ||
4be44fcd | 1178 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1179 | { |
4be44fcd LB |
1180 | return single_open(file, acpi_video_bus_POST_seq_show, |
1181 | PDE(inode)->data); | |
1da177e4 LT |
1182 | } |
1183 | ||
4be44fcd | 1184 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1185 | { |
1186 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1187 | } | |
1188 | ||
1189 | static ssize_t | |
4be44fcd LB |
1190 | acpi_video_bus_write_POST(struct file *file, |
1191 | const char __user * buffer, | |
1192 | size_t count, loff_t * data) | |
1da177e4 | 1193 | { |
4be44fcd | 1194 | int status; |
50dd0969 JE |
1195 | struct seq_file *m = file->private_data; |
1196 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1197 | char str[12] = { 0 }; |
1198 | unsigned long opt, options; | |
1da177e4 | 1199 | |
1da177e4 | 1200 | |
1da177e4 | 1201 | if (!video || count + 1 > sizeof str) |
d550d98d | 1202 | return -EINVAL; |
1da177e4 LT |
1203 | |
1204 | status = acpi_video_bus_POST_options(video, &options); | |
1205 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1206 | return -EINVAL; |
1da177e4 LT |
1207 | |
1208 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1209 | return -EFAULT; |
1da177e4 LT |
1210 | |
1211 | str[count] = 0; | |
1212 | opt = strtoul(str, NULL, 0); | |
1213 | if (opt > 3) | |
d550d98d | 1214 | return -EFAULT; |
1da177e4 | 1215 | |
98fb8fe1 | 1216 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1217 | options |= 1; |
1218 | ||
1219 | if (options & (1ul << opt)) { | |
4be44fcd | 1220 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1221 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1222 | return -EFAULT; |
1da177e4 LT |
1223 | |
1224 | } | |
1225 | ||
d550d98d | 1226 | return count; |
1da177e4 LT |
1227 | } |
1228 | ||
1229 | static ssize_t | |
4be44fcd LB |
1230 | acpi_video_bus_write_DOS(struct file *file, |
1231 | const char __user * buffer, | |
1232 | size_t count, loff_t * data) | |
1da177e4 | 1233 | { |
4be44fcd | 1234 | int status; |
50dd0969 JE |
1235 | struct seq_file *m = file->private_data; |
1236 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1237 | char str[12] = { 0 }; |
1238 | unsigned long opt; | |
1da177e4 | 1239 | |
1da177e4 | 1240 | |
1da177e4 | 1241 | if (!video || count + 1 > sizeof str) |
d550d98d | 1242 | return -EINVAL; |
1da177e4 LT |
1243 | |
1244 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1245 | return -EFAULT; |
1da177e4 LT |
1246 | |
1247 | str[count] = 0; | |
1248 | opt = strtoul(str, NULL, 0); | |
1249 | if (opt > 7) | |
d550d98d | 1250 | return -EFAULT; |
1da177e4 | 1251 | |
4be44fcd | 1252 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1253 | |
1254 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1255 | return -EFAULT; |
1da177e4 | 1256 | |
d550d98d | 1257 | return count; |
1da177e4 LT |
1258 | } |
1259 | ||
4be44fcd | 1260 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1261 | { |
4be44fcd LB |
1262 | struct proc_dir_entry *entry = NULL; |
1263 | struct acpi_video_bus *video; | |
1da177e4 | 1264 | |
1da177e4 | 1265 | |
50dd0969 | 1266 | video = acpi_driver_data(device); |
1da177e4 LT |
1267 | |
1268 | if (!acpi_device_dir(device)) { | |
1269 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1270 | acpi_video_dir); |
1da177e4 | 1271 | if (!acpi_device_dir(device)) |
d550d98d | 1272 | return -ENODEV; |
1da177e4 LT |
1273 | video->dir = acpi_device_dir(device); |
1274 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1275 | } | |
1276 | ||
1277 | /* 'info' [R] */ | |
1278 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1279 | if (!entry) | |
d550d98d | 1280 | return -ENODEV; |
1da177e4 LT |
1281 | else { |
1282 | entry->proc_fops = &acpi_video_bus_info_fops; | |
1283 | entry->data = acpi_driver_data(device); | |
1284 | entry->owner = THIS_MODULE; | |
1285 | } | |
1286 | ||
1287 | /* 'ROM' [R] */ | |
1288 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); | |
1289 | if (!entry) | |
d550d98d | 1290 | return -ENODEV; |
1da177e4 LT |
1291 | else { |
1292 | entry->proc_fops = &acpi_video_bus_ROM_fops; | |
1293 | entry->data = acpi_driver_data(device); | |
1294 | entry->owner = THIS_MODULE; | |
1295 | } | |
1296 | ||
1297 | /* 'POST_info' [R] */ | |
4be44fcd LB |
1298 | entry = |
1299 | create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); | |
1da177e4 | 1300 | if (!entry) |
d550d98d | 1301 | return -ENODEV; |
1da177e4 LT |
1302 | else { |
1303 | entry->proc_fops = &acpi_video_bus_POST_info_fops; | |
1304 | entry->data = acpi_driver_data(device); | |
1305 | entry->owner = THIS_MODULE; | |
1306 | } | |
1307 | ||
1308 | /* 'POST' [R/W] */ | |
4be44fcd LB |
1309 | entry = |
1310 | create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR, | |
1311 | acpi_device_dir(device)); | |
1da177e4 | 1312 | if (!entry) |
d550d98d | 1313 | return -ENODEV; |
1da177e4 | 1314 | else { |
d479e908 | 1315 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
1da177e4 | 1316 | entry->proc_fops = &acpi_video_bus_POST_fops; |
1da177e4 LT |
1317 | entry->data = acpi_driver_data(device); |
1318 | entry->owner = THIS_MODULE; | |
1319 | } | |
1320 | ||
1321 | /* 'DOS' [R/W] */ | |
4be44fcd LB |
1322 | entry = |
1323 | create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR, | |
1324 | acpi_device_dir(device)); | |
1da177e4 | 1325 | if (!entry) |
d550d98d | 1326 | return -ENODEV; |
1da177e4 | 1327 | else { |
d479e908 | 1328 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
1da177e4 | 1329 | entry->proc_fops = &acpi_video_bus_DOS_fops; |
1da177e4 LT |
1330 | entry->data = acpi_driver_data(device); |
1331 | entry->owner = THIS_MODULE; | |
1332 | } | |
1333 | ||
d550d98d | 1334 | return 0; |
1da177e4 LT |
1335 | } |
1336 | ||
4be44fcd | 1337 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1338 | { |
4be44fcd | 1339 | struct acpi_video_bus *video; |
1da177e4 | 1340 | |
1da177e4 | 1341 | |
50dd0969 | 1342 | video = acpi_driver_data(device); |
1da177e4 LT |
1343 | |
1344 | if (acpi_device_dir(device)) { | |
1345 | remove_proc_entry("info", acpi_device_dir(device)); | |
1346 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1347 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1348 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1349 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
4be44fcd | 1350 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1351 | acpi_device_dir(device) = NULL; |
1352 | } | |
1353 | ||
d550d98d | 1354 | return 0; |
1da177e4 LT |
1355 | } |
1356 | ||
1357 | /* -------------------------------------------------------------------------- | |
1358 | Driver Interface | |
1359 | -------------------------------------------------------------------------- */ | |
1360 | ||
1361 | /* device interface */ | |
82cae999 RZ |
1362 | static struct acpi_video_device_attrib* |
1363 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1364 | { | |
1365 | int count; | |
1366 | ||
1367 | for(count = 0; count < video->attached_count; count++) | |
1368 | if((video->attached_array[count].value.int_val & 0xffff) == device_id) | |
1369 | return &(video->attached_array[count].value.attrib); | |
1370 | return NULL; | |
1371 | } | |
1da177e4 LT |
1372 | |
1373 | static int | |
4be44fcd LB |
1374 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1375 | struct acpi_video_bus *video) | |
1da177e4 | 1376 | { |
4be44fcd | 1377 | unsigned long device_id; |
973bf491 | 1378 | int status; |
4be44fcd | 1379 | struct acpi_video_device *data; |
82cae999 | 1380 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1381 | |
1382 | if (!device || !video) | |
d550d98d | 1383 | return -EINVAL; |
1da177e4 | 1384 | |
4be44fcd LB |
1385 | status = |
1386 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1387 | if (ACPI_SUCCESS(status)) { |
1388 | ||
36bcbec7 | 1389 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1390 | if (!data) |
d550d98d | 1391 | return -ENOMEM; |
1da177e4 | 1392 | |
1da177e4 LT |
1393 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1394 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1395 | acpi_driver_data(device) = data; | |
1396 | ||
1397 | data->device_id = device_id; | |
1398 | data->video = video; | |
1399 | data->dev = device; | |
1400 | ||
82cae999 RZ |
1401 | attribute = acpi_video_get_device_attr(video, device_id); |
1402 | ||
1403 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1404 | switch (attribute->display_type) { | |
1405 | case ACPI_VIDEO_DISPLAY_CRT: | |
1406 | data->flags.crt = 1; | |
1407 | break; | |
1408 | case ACPI_VIDEO_DISPLAY_TV: | |
1409 | data->flags.tvout = 1; | |
1410 | break; | |
1411 | case ACPI_VIDEO_DISPLAY_DVI: | |
1412 | data->flags.dvi = 1; | |
1413 | break; | |
1414 | case ACPI_VIDEO_DISPLAY_LCD: | |
1415 | data->flags.lcd = 1; | |
1416 | break; | |
1417 | default: | |
1418 | data->flags.unknown = 1; | |
1419 | break; | |
1420 | } | |
1421 | if(attribute->bios_can_detect) | |
1422 | data->flags.bios = 1; | |
1423 | } else | |
1da177e4 | 1424 | data->flags.unknown = 1; |
4be44fcd | 1425 | |
1da177e4 LT |
1426 | acpi_video_device_bind(video, data); |
1427 | acpi_video_device_find_cap(data); | |
1428 | ||
90130268 | 1429 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1430 | ACPI_DEVICE_NOTIFY, |
1431 | acpi_video_device_notify, | |
1432 | data); | |
1da177e4 LT |
1433 | if (ACPI_FAILURE(status)) { |
1434 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1435 | "Error installing notify handler\n")); |
973bf491 YL |
1436 | if(data->brightness) |
1437 | kfree(data->brightness->levels); | |
1438 | kfree(data->brightness); | |
1439 | kfree(data); | |
1440 | return -ENODEV; | |
1da177e4 LT |
1441 | } |
1442 | ||
bbac81f5 | 1443 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1444 | list_add_tail(&data->entry, &video->video_device_list); |
bbac81f5 | 1445 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1446 | |
1447 | acpi_video_device_add_fs(device); | |
1448 | ||
d550d98d | 1449 | return 0; |
1da177e4 LT |
1450 | } |
1451 | ||
d550d98d | 1452 | return -ENOENT; |
1da177e4 LT |
1453 | } |
1454 | ||
1455 | /* | |
1456 | * Arg: | |
1457 | * video : video bus device | |
1458 | * | |
1459 | * Return: | |
1460 | * none | |
1461 | * | |
1462 | * Enumerate the video device list of the video bus, | |
1463 | * bind the ids with the corresponding video devices | |
1464 | * under the video bus. | |
4be44fcd | 1465 | */ |
1da177e4 | 1466 | |
4be44fcd | 1467 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1468 | { |
ff102ea9 DT |
1469 | struct acpi_video_device *dev; |
1470 | ||
bbac81f5 | 1471 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1472 | |
1473 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1474 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1475 | |
bbac81f5 | 1476 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1477 | } |
1478 | ||
1479 | /* | |
1480 | * Arg: | |
1481 | * video : video bus device | |
1482 | * device : video output device under the video | |
1483 | * bus | |
1484 | * | |
1485 | * Return: | |
1486 | * none | |
1487 | * | |
1488 | * Bind the ids with the corresponding video devices | |
1489 | * under the video bus. | |
4be44fcd | 1490 | */ |
1da177e4 LT |
1491 | |
1492 | static void | |
4be44fcd LB |
1493 | acpi_video_device_bind(struct acpi_video_bus *video, |
1494 | struct acpi_video_device *device) | |
1da177e4 | 1495 | { |
4be44fcd | 1496 | int i; |
1da177e4 LT |
1497 | |
1498 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1499 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
4be44fcd LB |
1500 | |
1501 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1502 | i < video->attached_count; i++) { | |
1503 | if (device->device_id == (IDS_VAL(i) & 0xffff)) { | |
1da177e4 LT |
1504 | IDS_BIND(i) = device; |
1505 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1506 | } | |
1507 | } | |
1508 | #undef IDS_VAL | |
1509 | #undef IDS_BIND | |
1510 | } | |
1511 | ||
1512 | /* | |
1513 | * Arg: | |
1514 | * video : video bus device | |
1515 | * | |
1516 | * Return: | |
1517 | * < 0 : error | |
1518 | * | |
1519 | * Call _DOD to enumerate all devices attached to display adapter | |
1520 | * | |
4be44fcd | 1521 | */ |
1da177e4 LT |
1522 | |
1523 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1524 | { | |
4be44fcd LB |
1525 | int status; |
1526 | int count; | |
1527 | int i; | |
1da177e4 | 1528 | struct acpi_video_enumerated_device *active_device_list; |
4be44fcd LB |
1529 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1530 | union acpi_object *dod = NULL; | |
1531 | union acpi_object *obj; | |
1da177e4 | 1532 | |
90130268 | 1533 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1534 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1535 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1536 | return status; |
1da177e4 LT |
1537 | } |
1538 | ||
50dd0969 | 1539 | dod = buffer.pointer; |
1da177e4 | 1540 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1541 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1542 | status = -EFAULT; |
1543 | goto out; | |
1544 | } | |
1545 | ||
1546 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1547 | dod->package.count)); |
1da177e4 | 1548 | |
4be44fcd LB |
1549 | active_device_list = kmalloc((1 + |
1550 | dod->package.count) * | |
1551 | sizeof(struct | |
1552 | acpi_video_enumerated_device), | |
1553 | GFP_KERNEL); | |
1da177e4 LT |
1554 | |
1555 | if (!active_device_list) { | |
1556 | status = -ENOMEM; | |
1557 | goto out; | |
1558 | } | |
1559 | ||
1560 | count = 0; | |
1561 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1562 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1563 | |
1564 | if (obj->type != ACPI_TYPE_INTEGER) { | |
6468463a | 1565 | printk(KERN_ERR PREFIX "Invalid _DOD data\n"); |
4be44fcd LB |
1566 | active_device_list[i].value.int_val = |
1567 | ACPI_VIDEO_HEAD_INVALID; | |
1da177e4 LT |
1568 | } |
1569 | active_device_list[i].value.int_val = obj->integer.value; | |
1570 | active_device_list[i].bind_info = NULL; | |
4be44fcd LB |
1571 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1572 | (int)obj->integer.value)); | |
1da177e4 LT |
1573 | count++; |
1574 | } | |
1575 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1576 | ||
6044ec88 | 1577 | kfree(video->attached_array); |
4be44fcd | 1578 | |
1da177e4 LT |
1579 | video->attached_array = active_device_list; |
1580 | video->attached_count = count; | |
4be44fcd | 1581 | out: |
02438d87 | 1582 | kfree(buffer.pointer); |
d550d98d | 1583 | return status; |
1da177e4 LT |
1584 | } |
1585 | ||
1586 | /* | |
1587 | * Arg: | |
1588 | * video : video bus device | |
98fb8fe1 | 1589 | * event : notify event |
1da177e4 LT |
1590 | * |
1591 | * Return: | |
1592 | * < 0 : error | |
1593 | * | |
1594 | * 1. Find out the current active output device. | |
98fb8fe1 | 1595 | * 2. Identify the next output device to switch to. |
1da177e4 | 1596 | * 3. call _DSS to do actual switch. |
4be44fcd | 1597 | */ |
1da177e4 | 1598 | |
4be44fcd | 1599 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event) |
1da177e4 | 1600 | { |
ff102ea9 | 1601 | struct list_head *node; |
4be44fcd LB |
1602 | struct acpi_video_device *dev = NULL; |
1603 | struct acpi_video_device *dev_next = NULL; | |
1604 | struct acpi_video_device *dev_prev = NULL; | |
1da177e4 LT |
1605 | unsigned long state; |
1606 | int status = 0; | |
1607 | ||
bbac81f5 | 1608 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1609 | |
ff102ea9 | 1610 | list_for_each(node, &video->video_device_list) { |
7334571f | 1611 | dev = container_of(node, struct acpi_video_device, entry); |
1da177e4 | 1612 | status = acpi_video_device_get_state(dev, &state); |
4be44fcd | 1613 | if (state & 0x2) { |
ff102ea9 DT |
1614 | dev_next = container_of(node->next, |
1615 | struct acpi_video_device, entry); | |
1616 | dev_prev = container_of(node->prev, | |
1617 | struct acpi_video_device, entry); | |
1da177e4 LT |
1618 | goto out; |
1619 | } | |
1620 | } | |
ff102ea9 | 1621 | |
1da177e4 LT |
1622 | dev_next = container_of(node->next, struct acpi_video_device, entry); |
1623 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); | |
ff102ea9 DT |
1624 | |
1625 | out: | |
bbac81f5 | 1626 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1627 | |
1da177e4 LT |
1628 | switch (event) { |
1629 | case ACPI_VIDEO_NOTIFY_CYCLE: | |
1630 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: | |
1631 | acpi_video_device_set_state(dev, 0); | |
1632 | acpi_video_device_set_state(dev_next, 0x80000001); | |
1633 | break; | |
1634 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: | |
1635 | acpi_video_device_set_state(dev, 0); | |
1636 | acpi_video_device_set_state(dev_prev, 0x80000001); | |
1637 | default: | |
1638 | break; | |
1639 | } | |
1640 | ||
d550d98d | 1641 | return status; |
1da177e4 LT |
1642 | } |
1643 | ||
4be44fcd LB |
1644 | static int |
1645 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1646 | u32 level_current, u32 event) | |
1da177e4 | 1647 | { |
63f0edfc | 1648 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
1649 | max = max_below = 0; |
1650 | min = min_above = 255; | |
63f0edfc AS |
1651 | /* Find closest level to level_current */ |
1652 | for (i = 0; i < device->brightness->count; i++) { | |
1653 | l = device->brightness->levels[i]; | |
1654 | if (abs(l - level_current) < abs(delta)) { | |
1655 | delta = l - level_current; | |
1656 | if (!delta) | |
1657 | break; | |
1658 | } | |
1659 | } | |
1660 | /* Ajust level_current to closest available level */ | |
1661 | level_current += delta; | |
f4715189 TT |
1662 | for (i = 0; i < device->brightness->count; i++) { |
1663 | l = device->brightness->levels[i]; | |
1664 | if (l < min) | |
1665 | min = l; | |
1666 | if (l > max) | |
1667 | max = l; | |
1668 | if (l < min_above && l > level_current) | |
1669 | min_above = l; | |
1670 | if (l > max_below && l < level_current) | |
1671 | max_below = l; | |
1672 | } | |
1673 | ||
1674 | switch (event) { | |
1675 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1676 | return (level_current < max) ? min_above : min; | |
1677 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1678 | return (level_current < max) ? min_above : max; | |
1679 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1680 | return (level_current > min) ? max_below : min; | |
1681 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1682 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1683 | return 0; | |
1684 | default: | |
1685 | return level_current; | |
1686 | } | |
1da177e4 LT |
1687 | } |
1688 | ||
1da177e4 | 1689 | static void |
4be44fcd | 1690 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 LT |
1691 | { |
1692 | unsigned long level_current, level_next; | |
1693 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1694 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1695 | acpi_video_device_lcd_set_level(device, level_next); | |
1696 | } | |
1697 | ||
1698 | static int | |
4be44fcd LB |
1699 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1700 | struct acpi_device *device) | |
1da177e4 | 1701 | { |
4be44fcd | 1702 | int status = 0; |
ff102ea9 | 1703 | struct acpi_device *dev; |
1da177e4 LT |
1704 | |
1705 | acpi_video_device_enumerate(video); | |
1706 | ||
ff102ea9 | 1707 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
1708 | |
1709 | status = acpi_video_bus_get_one_device(dev, video); | |
1710 | if (ACPI_FAILURE(status)) { | |
a6fc6720 | 1711 | ACPI_EXCEPTION((AE_INFO, status, "Cant attach device")); |
1da177e4 LT |
1712 | continue; |
1713 | } | |
1da177e4 | 1714 | } |
d550d98d | 1715 | return status; |
1da177e4 LT |
1716 | } |
1717 | ||
4be44fcd | 1718 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1719 | { |
031ec77b | 1720 | acpi_status status; |
1da177e4 LT |
1721 | struct acpi_video_bus *video; |
1722 | ||
1da177e4 LT |
1723 | |
1724 | if (!device || !device->video) | |
d550d98d | 1725 | return -ENOENT; |
1da177e4 LT |
1726 | |
1727 | video = device->video; | |
1728 | ||
1da177e4 LT |
1729 | acpi_video_device_remove_fs(device->dev); |
1730 | ||
90130268 | 1731 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1732 | ACPI_DEVICE_NOTIFY, |
1733 | acpi_video_device_notify); | |
599a52d1 | 1734 | backlight_device_unregister(device->backlight); |
23b0f015 | 1735 | video_output_unregister(device->output_dev); |
ff102ea9 | 1736 | |
d550d98d | 1737 | return 0; |
1da177e4 LT |
1738 | } |
1739 | ||
4be44fcd | 1740 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1741 | { |
4be44fcd | 1742 | int status; |
ff102ea9 | 1743 | struct acpi_video_device *dev, *next; |
1da177e4 | 1744 | |
bbac81f5 | 1745 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1746 | |
ff102ea9 | 1747 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 1748 | |
ff102ea9 | 1749 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
1750 | if (ACPI_FAILURE(status)) |
1751 | printk(KERN_WARNING PREFIX | |
1752 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1753 | |
ff102ea9 DT |
1754 | if (dev->brightness) { |
1755 | kfree(dev->brightness->levels); | |
1756 | kfree(dev->brightness); | |
1757 | } | |
1758 | list_del(&dev->entry); | |
1759 | kfree(dev); | |
1da177e4 LT |
1760 | } |
1761 | ||
bbac81f5 | 1762 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1763 | |
d550d98d | 1764 | return 0; |
1da177e4 LT |
1765 | } |
1766 | ||
1767 | /* acpi_video interface */ | |
1768 | ||
4be44fcd | 1769 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 1770 | { |
a21101c4 | 1771 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
1772 | } |
1773 | ||
4be44fcd | 1774 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1775 | { |
1776 | return acpi_video_bus_DOS(video, 0, 1); | |
1777 | } | |
1778 | ||
4be44fcd | 1779 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1780 | { |
50dd0969 | 1781 | struct acpi_video_bus *video = data; |
4be44fcd | 1782 | struct acpi_device *device = NULL; |
e9dab196 LY |
1783 | struct input_dev *input; |
1784 | int keycode; | |
1785 | ||
1da177e4 | 1786 | if (!video) |
d550d98d | 1787 | return; |
1da177e4 | 1788 | |
e6afa0de | 1789 | device = video->device; |
e9dab196 | 1790 | input = video->input; |
1da177e4 LT |
1791 | |
1792 | switch (event) { | |
98fb8fe1 | 1793 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 1794 | * most likely via hotkey. */ |
14e04fb3 | 1795 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1796 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1797 | break; |
1798 | ||
98fb8fe1 | 1799 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1800 | * connector. */ |
1801 | acpi_video_device_enumerate(video); | |
1802 | acpi_video_device_rebind(video); | |
1803 | acpi_video_switch_output(video, event); | |
14e04fb3 | 1804 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1805 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1806 | break; |
1807 | ||
4be44fcd | 1808 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
e9dab196 | 1809 | acpi_video_switch_output(video, event); |
25c87f7f | 1810 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1811 | keycode = KEY_SWITCHVIDEOMODE; |
1812 | break; | |
4be44fcd | 1813 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
e9dab196 | 1814 | acpi_video_switch_output(video, event); |
25c87f7f | 1815 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1816 | keycode = KEY_VIDEO_NEXT; |
1817 | break; | |
4be44fcd | 1818 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
1da177e4 | 1819 | acpi_video_switch_output(video, event); |
14e04fb3 | 1820 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1821 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
1822 | break; |
1823 | ||
1824 | default: | |
e9dab196 | 1825 | keycode = KEY_UNKNOWN; |
1da177e4 | 1826 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1827 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1828 | break; |
1829 | } | |
1830 | ||
e9dab196 LY |
1831 | input_report_key(input, keycode, 1); |
1832 | input_sync(input); | |
1833 | input_report_key(input, keycode, 0); | |
1834 | input_sync(input); | |
1835 | ||
d550d98d | 1836 | return; |
1da177e4 LT |
1837 | } |
1838 | ||
4be44fcd | 1839 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1840 | { |
50dd0969 | 1841 | struct acpi_video_device *video_device = data; |
4be44fcd | 1842 | struct acpi_device *device = NULL; |
e9dab196 LY |
1843 | struct acpi_video_bus *bus; |
1844 | struct input_dev *input; | |
1845 | int keycode; | |
1da177e4 | 1846 | |
1da177e4 | 1847 | if (!video_device) |
d550d98d | 1848 | return; |
1da177e4 | 1849 | |
e6afa0de | 1850 | device = video_device->dev; |
e9dab196 LY |
1851 | bus = video_device->video; |
1852 | input = bus->input; | |
1da177e4 LT |
1853 | |
1854 | switch (event) { | |
4be44fcd | 1855 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
8a681a4d ZR |
1856 | if (brightness_switch_enabled) |
1857 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1858 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1859 | keycode = KEY_BRIGHTNESS_CYCLE; |
1860 | break; | |
4be44fcd | 1861 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
8a681a4d ZR |
1862 | if (brightness_switch_enabled) |
1863 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1864 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1865 | keycode = KEY_BRIGHTNESSUP; |
1866 | break; | |
4be44fcd | 1867 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
8a681a4d ZR |
1868 | if (brightness_switch_enabled) |
1869 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1870 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1871 | keycode = KEY_BRIGHTNESSDOWN; |
1872 | break; | |
4be44fcd | 1873 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
8a681a4d ZR |
1874 | if (brightness_switch_enabled) |
1875 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1876 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1877 | keycode = KEY_BRIGHTNESS_ZERO; |
1878 | break; | |
4be44fcd | 1879 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
8a681a4d ZR |
1880 | if (brightness_switch_enabled) |
1881 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1882 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1883 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
1884 | break; |
1885 | default: | |
e9dab196 | 1886 | keycode = KEY_UNKNOWN; |
1da177e4 | 1887 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1888 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1889 | break; |
1890 | } | |
e9dab196 LY |
1891 | |
1892 | input_report_key(input, keycode, 1); | |
1893 | input_sync(input); | |
1894 | input_report_key(input, keycode, 0); | |
1895 | input_sync(input); | |
1896 | ||
d550d98d | 1897 | return; |
1da177e4 LT |
1898 | } |
1899 | ||
e6d9da1d | 1900 | static int instance; |
4be44fcd | 1901 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1902 | { |
f51e8391 DT |
1903 | acpi_status status; |
1904 | struct acpi_video_bus *video; | |
e9dab196 | 1905 | struct input_dev *input; |
f51e8391 | 1906 | int error; |
1da177e4 | 1907 | |
36bcbec7 | 1908 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 1909 | if (!video) |
d550d98d | 1910 | return -ENOMEM; |
1da177e4 | 1911 | |
e6d9da1d ZR |
1912 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
1913 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
1914 | if (instance) | |
1915 | device->pnp.bus_id[3] = '0' + instance; | |
1916 | instance ++; | |
1917 | } | |
1918 | ||
e6afa0de | 1919 | video->device = device; |
1da177e4 LT |
1920 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
1921 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1922 | acpi_driver_data(device) = video; | |
1923 | ||
1924 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
1925 | error = acpi_video_bus_check(video); |
1926 | if (error) | |
1927 | goto err_free_video; | |
1da177e4 | 1928 | |
f51e8391 DT |
1929 | error = acpi_video_bus_add_fs(device); |
1930 | if (error) | |
1931 | goto err_free_video; | |
1da177e4 | 1932 | |
bbac81f5 | 1933 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
1934 | INIT_LIST_HEAD(&video->video_device_list); |
1935 | ||
1936 | acpi_video_bus_get_devices(video, device); | |
1937 | acpi_video_bus_start_devices(video); | |
1938 | ||
90130268 | 1939 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1940 | ACPI_DEVICE_NOTIFY, |
1941 | acpi_video_bus_notify, video); | |
1da177e4 LT |
1942 | if (ACPI_FAILURE(status)) { |
1943 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1944 | "Error installing notify handler\n")); |
f51e8391 DT |
1945 | error = -ENODEV; |
1946 | goto err_stop_video; | |
1da177e4 LT |
1947 | } |
1948 | ||
e9dab196 | 1949 | video->input = input = input_allocate_device(); |
f51e8391 DT |
1950 | if (!input) { |
1951 | error = -ENOMEM; | |
1952 | goto err_uninstall_notify; | |
1953 | } | |
e9dab196 LY |
1954 | |
1955 | snprintf(video->phys, sizeof(video->phys), | |
1956 | "%s/video/input0", acpi_device_hid(video->device)); | |
1957 | ||
1958 | input->name = acpi_device_name(video->device); | |
1959 | input->phys = video->phys; | |
1960 | input->id.bustype = BUS_HOST; | |
1961 | input->id.product = 0x06; | |
91c05c66 | 1962 | input->dev.parent = &device->dev; |
e9dab196 LY |
1963 | input->evbit[0] = BIT(EV_KEY); |
1964 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
1965 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
1966 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
1967 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
1968 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
1969 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
1970 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
1971 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
1972 | set_bit(KEY_UNKNOWN, input->keybit); | |
e9dab196 | 1973 | |
f51e8391 DT |
1974 | error = input_register_device(input); |
1975 | if (error) | |
1976 | goto err_free_input_dev; | |
e9dab196 | 1977 | |
1da177e4 | 1978 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
1979 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
1980 | video->flags.multihead ? "yes" : "no", | |
1981 | video->flags.rom ? "yes" : "no", | |
1982 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 1983 | |
f51e8391 DT |
1984 | return 0; |
1985 | ||
1986 | err_free_input_dev: | |
1987 | input_free_device(input); | |
1988 | err_uninstall_notify: | |
1989 | acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, | |
1990 | acpi_video_bus_notify); | |
1991 | err_stop_video: | |
1992 | acpi_video_bus_stop_devices(video); | |
1993 | acpi_video_bus_put_devices(video); | |
1994 | kfree(video->attached_array); | |
1995 | acpi_video_bus_remove_fs(device); | |
1996 | err_free_video: | |
1997 | kfree(video); | |
1998 | acpi_driver_data(device) = NULL; | |
1da177e4 | 1999 | |
f51e8391 | 2000 | return error; |
1da177e4 LT |
2001 | } |
2002 | ||
4be44fcd | 2003 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 2004 | { |
4be44fcd LB |
2005 | acpi_status status = 0; |
2006 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 2007 | |
1da177e4 LT |
2008 | |
2009 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 2010 | return -EINVAL; |
1da177e4 | 2011 | |
50dd0969 | 2012 | video = acpi_driver_data(device); |
1da177e4 LT |
2013 | |
2014 | acpi_video_bus_stop_devices(video); | |
2015 | ||
90130268 | 2016 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
2017 | ACPI_DEVICE_NOTIFY, |
2018 | acpi_video_bus_notify); | |
1da177e4 LT |
2019 | |
2020 | acpi_video_bus_put_devices(video); | |
2021 | acpi_video_bus_remove_fs(device); | |
2022 | ||
e9dab196 | 2023 | input_unregister_device(video->input); |
6044ec88 | 2024 | kfree(video->attached_array); |
1da177e4 LT |
2025 | kfree(video); |
2026 | ||
d550d98d | 2027 | return 0; |
1da177e4 LT |
2028 | } |
2029 | ||
4be44fcd | 2030 | static int __init acpi_video_init(void) |
1da177e4 | 2031 | { |
4be44fcd | 2032 | int result = 0; |
1da177e4 | 2033 | |
1da177e4 LT |
2034 | |
2035 | /* | |
4be44fcd LB |
2036 | acpi_dbg_level = 0xFFFFFFFF; |
2037 | acpi_dbg_layer = 0x08000000; | |
2038 | */ | |
1da177e4 LT |
2039 | |
2040 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2041 | if (!acpi_video_dir) | |
d550d98d | 2042 | return -ENODEV; |
1da177e4 LT |
2043 | acpi_video_dir->owner = THIS_MODULE; |
2044 | ||
2045 | result = acpi_bus_register_driver(&acpi_video_bus); | |
2046 | if (result < 0) { | |
2047 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 2048 | return -ENODEV; |
1da177e4 LT |
2049 | } |
2050 | ||
d550d98d | 2051 | return 0; |
1da177e4 LT |
2052 | } |
2053 | ||
4be44fcd | 2054 | static void __exit acpi_video_exit(void) |
1da177e4 | 2055 | { |
1da177e4 LT |
2056 | |
2057 | acpi_bus_unregister_driver(&acpi_video_bus); | |
2058 | ||
2059 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2060 | ||
d550d98d | 2061 | return; |
1da177e4 LT |
2062 | } |
2063 | ||
2064 | module_init(acpi_video_init); | |
2065 | module_exit(acpi_video_exit); |