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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> |
702ed512 | 37 | #include <linux/thermal.h> |
23b0f015 | 38 | #include <linux/video_output.h> |
1da177e4 LT |
39 | #include <asm/uaccess.h> |
40 | ||
41 | #include <acpi/acpi_bus.h> | |
42 | #include <acpi/acpi_drivers.h> | |
43 | ||
44 | #define ACPI_VIDEO_COMPONENT 0x08000000 | |
45 | #define ACPI_VIDEO_CLASS "video" | |
1da177e4 LT |
46 | #define ACPI_VIDEO_BUS_NAME "Video Bus" |
47 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" | |
48 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 | |
49 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 | |
50 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 | |
51 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 | |
52 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 | |
53 | ||
f4715189 TT |
54 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85 |
55 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 | |
56 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 | |
57 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88 | |
58 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89 | |
1da177e4 | 59 | |
1da177e4 LT |
60 | #define ACPI_VIDEO_HEAD_INVALID (~0u - 1) |
61 | #define ACPI_VIDEO_HEAD_END (~0u) | |
2f3d000a | 62 | #define MAX_NAME_LEN 20 |
1da177e4 | 63 | |
82cae999 RZ |
64 | #define ACPI_VIDEO_DISPLAY_CRT 1 |
65 | #define ACPI_VIDEO_DISPLAY_TV 2 | |
66 | #define ACPI_VIDEO_DISPLAY_DVI 3 | |
67 | #define ACPI_VIDEO_DISPLAY_LCD 4 | |
68 | ||
1da177e4 | 69 | #define _COMPONENT ACPI_VIDEO_COMPONENT |
f52fd66d | 70 | ACPI_MODULE_NAME("video"); |
1da177e4 | 71 | |
f52fd66d | 72 | MODULE_AUTHOR("Bruno Ducrot"); |
7cda93e0 | 73 | MODULE_DESCRIPTION("ACPI Video Driver"); |
1da177e4 LT |
74 | MODULE_LICENSE("GPL"); |
75 | ||
8a681a4d ZR |
76 | static int brightness_switch_enabled = 1; |
77 | module_param(brightness_switch_enabled, bool, 0644); | |
78 | ||
4be44fcd LB |
79 | static int acpi_video_bus_add(struct acpi_device *device); |
80 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
863c1490 | 81 | static int acpi_video_resume(struct acpi_device *device); |
1da177e4 | 82 | |
1ba90e3a TR |
83 | static const struct acpi_device_id video_device_ids[] = { |
84 | {ACPI_VIDEO_HID, 0}, | |
85 | {"", 0}, | |
86 | }; | |
87 | MODULE_DEVICE_TABLE(acpi, video_device_ids); | |
88 | ||
1da177e4 | 89 | static struct acpi_driver acpi_video_bus = { |
c2b6705b | 90 | .name = "video", |
1da177e4 | 91 | .class = ACPI_VIDEO_CLASS, |
1ba90e3a | 92 | .ids = video_device_ids, |
1da177e4 LT |
93 | .ops = { |
94 | .add = acpi_video_bus_add, | |
95 | .remove = acpi_video_bus_remove, | |
863c1490 | 96 | .resume = acpi_video_resume, |
4be44fcd | 97 | }, |
1da177e4 LT |
98 | }; |
99 | ||
100 | struct acpi_video_bus_flags { | |
4be44fcd LB |
101 | u8 multihead:1; /* can switch video heads */ |
102 | u8 rom:1; /* can retrieve a video rom */ | |
103 | u8 post:1; /* can configure the head to */ | |
104 | u8 reserved:5; | |
1da177e4 LT |
105 | }; |
106 | ||
107 | struct acpi_video_bus_cap { | |
4be44fcd LB |
108 | u8 _DOS:1; /*Enable/Disable output switching */ |
109 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
110 | u8 _ROM:1; /*Get ROM Data */ | |
111 | u8 _GPD:1; /*Get POST Device */ | |
112 | u8 _SPD:1; /*Set POST Device */ | |
113 | u8 _VPO:1; /*Video POST Options */ | |
114 | u8 reserved:2; | |
1da177e4 LT |
115 | }; |
116 | ||
4be44fcd LB |
117 | struct acpi_video_device_attrib { |
118 | u32 display_index:4; /* A zero-based instance of the Display */ | |
98fb8fe1 | 119 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
4be44fcd | 120 | u32 display_type:4; /*Describe the specific type in use */ |
98fb8fe1 | 121 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
4be44fcd LB |
122 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
123 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
124 | the VGA device. */ | |
125 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
126 | u32 reserved:10; /*Must be 0 */ | |
127 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
128 | }; |
129 | ||
130 | struct acpi_video_enumerated_device { | |
131 | union { | |
132 | u32 int_val; | |
4be44fcd | 133 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
134 | } value; |
135 | struct acpi_video_device *bind_info; | |
136 | }; | |
137 | ||
138 | struct acpi_video_bus { | |
e6afa0de | 139 | struct acpi_device *device; |
4be44fcd | 140 | u8 dos_setting; |
1da177e4 | 141 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
142 | u8 attached_count; |
143 | struct acpi_video_bus_cap cap; | |
1da177e4 | 144 | struct acpi_video_bus_flags flags; |
4be44fcd | 145 | struct list_head video_device_list; |
bbac81f5 | 146 | struct mutex device_list_lock; /* protects video_device_list */ |
4be44fcd | 147 | struct proc_dir_entry *dir; |
e9dab196 LY |
148 | struct input_dev *input; |
149 | char phys[32]; /* for input device */ | |
1da177e4 LT |
150 | }; |
151 | ||
152 | struct acpi_video_device_flags { | |
4be44fcd LB |
153 | u8 crt:1; |
154 | u8 lcd:1; | |
155 | u8 tvout:1; | |
82cae999 | 156 | u8 dvi:1; |
4be44fcd LB |
157 | u8 bios:1; |
158 | u8 unknown:1; | |
82cae999 | 159 | u8 reserved:2; |
1da177e4 LT |
160 | }; |
161 | ||
162 | struct acpi_video_device_cap { | |
4be44fcd LB |
163 | u8 _ADR:1; /*Return the unique ID */ |
164 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
165 | u8 _BCM:1; /*Set the brightness level */ | |
2f3d000a | 166 | u8 _BQC:1; /* Get current brightness level */ |
4be44fcd LB |
167 | u8 _DDC:1; /*Return the EDID for this device */ |
168 | u8 _DCS:1; /*Return status of output device */ | |
169 | u8 _DGS:1; /*Query graphics state */ | |
170 | u8 _DSS:1; /*Device state set */ | |
1da177e4 LT |
171 | }; |
172 | ||
173 | struct acpi_video_device_brightness { | |
4be44fcd LB |
174 | int curr; |
175 | int count; | |
176 | int *levels; | |
1da177e4 LT |
177 | }; |
178 | ||
179 | struct acpi_video_device { | |
4be44fcd LB |
180 | unsigned long device_id; |
181 | struct acpi_video_device_flags flags; | |
182 | struct acpi_video_device_cap cap; | |
183 | struct list_head entry; | |
184 | struct acpi_video_bus *video; | |
185 | struct acpi_device *dev; | |
1da177e4 | 186 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 187 | struct backlight_device *backlight; |
702ed512 | 188 | struct thermal_cooling_device *cdev; |
23b0f015 | 189 | struct output_device *output_dev; |
1da177e4 LT |
190 | }; |
191 | ||
1da177e4 LT |
192 | /* bus */ |
193 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
194 | static struct file_operations acpi_video_bus_info_fops = { | |
4be44fcd LB |
195 | .open = acpi_video_bus_info_open_fs, |
196 | .read = seq_read, | |
197 | .llseek = seq_lseek, | |
198 | .release = single_release, | |
1da177e4 LT |
199 | }; |
200 | ||
201 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
202 | static struct file_operations acpi_video_bus_ROM_fops = { | |
4be44fcd LB |
203 | .open = acpi_video_bus_ROM_open_fs, |
204 | .read = seq_read, | |
205 | .llseek = seq_lseek, | |
206 | .release = single_release, | |
1da177e4 LT |
207 | }; |
208 | ||
4be44fcd LB |
209 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
210 | struct file *file); | |
1da177e4 | 211 | static struct file_operations acpi_video_bus_POST_info_fops = { |
4be44fcd LB |
212 | .open = acpi_video_bus_POST_info_open_fs, |
213 | .read = seq_read, | |
214 | .llseek = seq_lseek, | |
215 | .release = single_release, | |
1da177e4 LT |
216 | }; |
217 | ||
218 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
219 | static struct file_operations acpi_video_bus_POST_fops = { | |
4be44fcd LB |
220 | .open = acpi_video_bus_POST_open_fs, |
221 | .read = seq_read, | |
222 | .llseek = seq_lseek, | |
223 | .release = single_release, | |
1da177e4 LT |
224 | }; |
225 | ||
1da177e4 LT |
226 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
227 | static struct file_operations acpi_video_bus_DOS_fops = { | |
4be44fcd LB |
228 | .open = acpi_video_bus_DOS_open_fs, |
229 | .read = seq_read, | |
230 | .llseek = seq_lseek, | |
231 | .release = single_release, | |
1da177e4 LT |
232 | }; |
233 | ||
234 | /* device */ | |
4be44fcd LB |
235 | static int acpi_video_device_info_open_fs(struct inode *inode, |
236 | struct file *file); | |
1da177e4 | 237 | static struct file_operations acpi_video_device_info_fops = { |
4be44fcd LB |
238 | .open = acpi_video_device_info_open_fs, |
239 | .read = seq_read, | |
240 | .llseek = seq_lseek, | |
241 | .release = single_release, | |
1da177e4 LT |
242 | }; |
243 | ||
4be44fcd LB |
244 | static int acpi_video_device_state_open_fs(struct inode *inode, |
245 | struct file *file); | |
1da177e4 | 246 | static struct file_operations acpi_video_device_state_fops = { |
4be44fcd LB |
247 | .open = acpi_video_device_state_open_fs, |
248 | .read = seq_read, | |
249 | .llseek = seq_lseek, | |
250 | .release = single_release, | |
1da177e4 LT |
251 | }; |
252 | ||
4be44fcd LB |
253 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
254 | struct file *file); | |
1da177e4 | 255 | static struct file_operations acpi_video_device_brightness_fops = { |
4be44fcd LB |
256 | .open = acpi_video_device_brightness_open_fs, |
257 | .read = seq_read, | |
258 | .llseek = seq_lseek, | |
259 | .release = single_release, | |
1da177e4 LT |
260 | }; |
261 | ||
4be44fcd LB |
262 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
263 | struct file *file); | |
1da177e4 | 264 | static struct file_operations acpi_video_device_EDID_fops = { |
4be44fcd LB |
265 | .open = acpi_video_device_EDID_open_fs, |
266 | .read = seq_read, | |
267 | .llseek = seq_lseek, | |
268 | .release = single_release, | |
1da177e4 LT |
269 | }; |
270 | ||
4be44fcd | 271 | static char device_decode[][30] = { |
1da177e4 LT |
272 | "motherboard VGA device", |
273 | "PCI VGA device", | |
274 | "AGP VGA device", | |
275 | "UNKNOWN", | |
276 | }; | |
277 | ||
4be44fcd LB |
278 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
279 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
280 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
281 | struct acpi_video_device *device); | |
1da177e4 | 282 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
2f3d000a YL |
283 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
284 | int level); | |
285 | static int acpi_video_device_lcd_get_level_current( | |
286 | struct acpi_video_device *device, | |
287 | unsigned long *level); | |
4be44fcd LB |
288 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
289 | u32 level_current, u32 event); | |
290 | static void acpi_video_switch_brightness(struct acpi_video_device *device, | |
291 | int event); | |
23b0f015 LY |
292 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
293 | unsigned long *state); | |
294 | static int acpi_video_output_get(struct output_device *od); | |
295 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 296 | |
2f3d000a YL |
297 | /*backlight device sysfs support*/ |
298 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
299 | { | |
300 | unsigned long cur_level; | |
38531e6f | 301 | int i; |
2f3d000a | 302 | struct acpi_video_device *vd = |
655bfd7a | 303 | (struct acpi_video_device *)bl_get_data(bd); |
2f3d000a | 304 | acpi_video_device_lcd_get_level_current(vd, &cur_level); |
38531e6f MG |
305 | for (i = 2; i < vd->brightness->count; i++) { |
306 | if (vd->brightness->levels[i] == cur_level) | |
307 | /* The first two entries are special - see page 575 | |
308 | of the ACPI spec 3.0 */ | |
309 | return i-2; | |
310 | } | |
311 | return 0; | |
2f3d000a YL |
312 | } |
313 | ||
314 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
315 | { | |
38531e6f | 316 | int request_level = bd->props.brightness+2; |
2f3d000a | 317 | struct acpi_video_device *vd = |
655bfd7a | 318 | (struct acpi_video_device *)bl_get_data(bd); |
38531e6f MG |
319 | acpi_video_device_lcd_set_level(vd, |
320 | vd->brightness->levels[request_level]); | |
2f3d000a YL |
321 | return 0; |
322 | } | |
323 | ||
599a52d1 RP |
324 | static struct backlight_ops acpi_backlight_ops = { |
325 | .get_brightness = acpi_video_get_brightness, | |
326 | .update_status = acpi_video_set_brightness, | |
327 | }; | |
328 | ||
23b0f015 LY |
329 | /*video output device sysfs support*/ |
330 | static int acpi_video_output_get(struct output_device *od) | |
331 | { | |
332 | unsigned long state; | |
333 | struct acpi_video_device *vd = | |
60043428 | 334 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
335 | acpi_video_device_get_state(vd, &state); |
336 | return (int)state; | |
337 | } | |
338 | ||
339 | static int acpi_video_output_set(struct output_device *od) | |
340 | { | |
341 | unsigned long state = od->request_state; | |
342 | struct acpi_video_device *vd= | |
60043428 | 343 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
344 | return acpi_video_device_set_state(vd, state); |
345 | } | |
346 | ||
347 | static struct output_properties acpi_output_properties = { | |
348 | .set_state = acpi_video_output_set, | |
349 | .get_status = acpi_video_output_get, | |
350 | }; | |
702ed512 ZR |
351 | |
352 | ||
353 | /* thermal cooling device callbacks */ | |
354 | static int video_get_max_state(struct thermal_cooling_device *cdev, char *buf) | |
355 | { | |
356 | struct acpi_device *device = cdev->devdata; | |
357 | struct acpi_video_device *video = acpi_driver_data(device); | |
358 | ||
359 | return sprintf(buf, "%d\n", video->brightness->count - 3); | |
360 | } | |
361 | ||
362 | static int video_get_cur_state(struct thermal_cooling_device *cdev, char *buf) | |
363 | { | |
364 | struct acpi_device *device = cdev->devdata; | |
365 | struct acpi_video_device *video = acpi_driver_data(device); | |
366 | unsigned long level; | |
367 | int state; | |
368 | ||
369 | acpi_video_device_lcd_get_level_current(video, &level); | |
370 | for (state = 2; state < video->brightness->count; state++) | |
371 | if (level == video->brightness->levels[state]) | |
372 | return sprintf(buf, "%d\n", | |
373 | video->brightness->count - state - 1); | |
374 | ||
375 | return -EINVAL; | |
376 | } | |
377 | ||
378 | static int | |
379 | video_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state) | |
380 | { | |
381 | struct acpi_device *device = cdev->devdata; | |
382 | struct acpi_video_device *video = acpi_driver_data(device); | |
383 | int level; | |
384 | ||
385 | if ( state >= video->brightness->count - 2) | |
386 | return -EINVAL; | |
387 | ||
388 | state = video->brightness->count - state; | |
389 | level = video->brightness->levels[state -1]; | |
390 | return acpi_video_device_lcd_set_level(video, level); | |
391 | } | |
392 | ||
393 | static struct thermal_cooling_device_ops video_cooling_ops = { | |
394 | .get_max_state = video_get_max_state, | |
395 | .get_cur_state = video_get_cur_state, | |
396 | .set_cur_state = video_set_cur_state, | |
397 | }; | |
398 | ||
1da177e4 LT |
399 | /* -------------------------------------------------------------------------- |
400 | Video Management | |
401 | -------------------------------------------------------------------------- */ | |
402 | ||
403 | /* device */ | |
404 | ||
405 | static int | |
4be44fcd | 406 | acpi_video_device_query(struct acpi_video_device *device, unsigned long *state) |
1da177e4 | 407 | { |
4be44fcd | 408 | int status; |
90130268 PM |
409 | |
410 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 411 | |
d550d98d | 412 | return status; |
1da177e4 LT |
413 | } |
414 | ||
415 | static int | |
4be44fcd LB |
416 | acpi_video_device_get_state(struct acpi_video_device *device, |
417 | unsigned long *state) | |
1da177e4 | 418 | { |
4be44fcd | 419 | int status; |
1da177e4 | 420 | |
90130268 | 421 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 422 | |
d550d98d | 423 | return status; |
1da177e4 LT |
424 | } |
425 | ||
426 | static int | |
4be44fcd | 427 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 428 | { |
4be44fcd LB |
429 | int status; |
430 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
431 | struct acpi_object_list args = { 1, &arg0 }; | |
824b558b | 432 | unsigned long ret; |
1da177e4 | 433 | |
1da177e4 LT |
434 | |
435 | arg0.integer.value = state; | |
90130268 | 436 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 437 | |
d550d98d | 438 | return status; |
1da177e4 LT |
439 | } |
440 | ||
441 | static int | |
4be44fcd LB |
442 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
443 | union acpi_object **levels) | |
1da177e4 | 444 | { |
4be44fcd LB |
445 | int status; |
446 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
447 | union acpi_object *obj; | |
1da177e4 | 448 | |
1da177e4 LT |
449 | |
450 | *levels = NULL; | |
451 | ||
90130268 | 452 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 453 | if (!ACPI_SUCCESS(status)) |
d550d98d | 454 | return status; |
4be44fcd | 455 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 456 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 457 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
458 | status = -EFAULT; |
459 | goto err; | |
460 | } | |
461 | ||
462 | *levels = obj; | |
463 | ||
d550d98d | 464 | return 0; |
1da177e4 | 465 | |
4be44fcd | 466 | err: |
6044ec88 | 467 | kfree(buffer.pointer); |
1da177e4 | 468 | |
d550d98d | 469 | return status; |
1da177e4 LT |
470 | } |
471 | ||
472 | static int | |
4be44fcd | 473 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 474 | { |
4500ca8e | 475 | int status = AE_OK; |
4be44fcd LB |
476 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
477 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 478 | |
1da177e4 LT |
479 | |
480 | arg0.integer.value = level; | |
1da177e4 | 481 | |
4500ca8e AS |
482 | if (device->cap._BCM) |
483 | status = acpi_evaluate_object(device->dev->handle, "_BCM", | |
484 | &args, NULL); | |
485 | device->brightness->curr = level; | |
d550d98d | 486 | return status; |
1da177e4 LT |
487 | } |
488 | ||
489 | static int | |
4be44fcd LB |
490 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
491 | unsigned long *level) | |
1da177e4 | 492 | { |
4500ca8e AS |
493 | if (device->cap._BQC) |
494 | return acpi_evaluate_integer(device->dev->handle, "_BQC", NULL, | |
495 | level); | |
496 | *level = device->brightness->curr; | |
497 | return AE_OK; | |
1da177e4 LT |
498 | } |
499 | ||
500 | static int | |
4be44fcd LB |
501 | acpi_video_device_EDID(struct acpi_video_device *device, |
502 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 503 | { |
4be44fcd LB |
504 | int status; |
505 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
506 | union acpi_object *obj; | |
507 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
508 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 509 | |
1da177e4 LT |
510 | |
511 | *edid = NULL; | |
512 | ||
513 | if (!device) | |
d550d98d | 514 | return -ENODEV; |
1da177e4 LT |
515 | if (length == 128) |
516 | arg0.integer.value = 1; | |
517 | else if (length == 256) | |
518 | arg0.integer.value = 2; | |
519 | else | |
d550d98d | 520 | return -EINVAL; |
1da177e4 | 521 | |
90130268 | 522 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 523 | if (ACPI_FAILURE(status)) |
d550d98d | 524 | return -ENODEV; |
1da177e4 | 525 | |
50dd0969 | 526 | obj = buffer.pointer; |
1da177e4 LT |
527 | |
528 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
529 | *edid = obj; | |
530 | else { | |
6468463a | 531 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
532 | status = -EFAULT; |
533 | kfree(obj); | |
534 | } | |
535 | ||
d550d98d | 536 | return status; |
1da177e4 LT |
537 | } |
538 | ||
1da177e4 LT |
539 | /* bus */ |
540 | ||
541 | static int | |
4be44fcd | 542 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 543 | { |
4be44fcd LB |
544 | int status; |
545 | unsigned long tmp; | |
546 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
547 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 548 | |
1da177e4 LT |
549 | |
550 | arg0.integer.value = option; | |
551 | ||
90130268 | 552 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 553 | if (ACPI_SUCCESS(status)) |
4be44fcd | 554 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 555 | |
d550d98d | 556 | return status; |
1da177e4 LT |
557 | } |
558 | ||
559 | static int | |
4be44fcd | 560 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) |
1da177e4 LT |
561 | { |
562 | int status; | |
563 | ||
90130268 | 564 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 565 | |
d550d98d | 566 | return status; |
1da177e4 LT |
567 | } |
568 | ||
569 | static int | |
4be44fcd LB |
570 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
571 | unsigned long *options) | |
1da177e4 | 572 | { |
4be44fcd | 573 | int status; |
1da177e4 | 574 | |
90130268 | 575 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
576 | *options &= 3; |
577 | ||
d550d98d | 578 | return status; |
1da177e4 LT |
579 | } |
580 | ||
581 | /* | |
582 | * Arg: | |
583 | * video : video bus device pointer | |
584 | * bios_flag : | |
585 | * 0. The system BIOS should NOT automatically switch(toggle) | |
586 | * the active display output. | |
587 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 588 | * active display output. No switch event. |
1da177e4 LT |
589 | * 2. The _DGS value should be locked. |
590 | * 3. The system BIOS should not automatically switch (toggle) the | |
591 | * active display output, but instead generate the display switch | |
592 | * event notify code. | |
593 | * lcd_flag : | |
594 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 595 | * of the LCD when the power changes from AC to DC |
1da177e4 | 596 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 597 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
598 | * Return Value: |
599 | * -1 wrong arg. | |
600 | */ | |
601 | ||
602 | static int | |
4be44fcd | 603 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 604 | { |
4be44fcd LB |
605 | acpi_integer status = 0; |
606 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
607 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 608 | |
1da177e4 | 609 | |
4be44fcd | 610 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
611 | status = -1; |
612 | goto Failed; | |
613 | } | |
614 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
615 | video->dos_setting = arg0.integer.value; | |
90130268 | 616 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 617 | |
4be44fcd | 618 | Failed: |
d550d98d | 619 | return status; |
1da177e4 LT |
620 | } |
621 | ||
622 | /* | |
623 | * Arg: | |
624 | * device : video output device (LCD, CRT, ..) | |
625 | * | |
626 | * Return Value: | |
627 | * None | |
628 | * | |
98fb8fe1 | 629 | * Find out all required AML methods defined under the output |
1da177e4 LT |
630 | * device. |
631 | */ | |
632 | ||
4be44fcd | 633 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 634 | { |
1da177e4 LT |
635 | acpi_handle h_dummy1; |
636 | int i; | |
2f3d000a | 637 | u32 max_level = 0; |
1da177e4 LT |
638 | union acpi_object *obj = NULL; |
639 | struct acpi_video_device_brightness *br = NULL; | |
640 | ||
1da177e4 | 641 | |
98934def | 642 | memset(&device->cap, 0, sizeof(device->cap)); |
1da177e4 | 643 | |
90130268 | 644 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
645 | device->cap._ADR = 1; |
646 | } | |
90130268 | 647 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 648 | device->cap._BCL = 1; |
1da177e4 | 649 | } |
90130268 | 650 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 651 | device->cap._BCM = 1; |
1da177e4 | 652 | } |
2f3d000a YL |
653 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
654 | device->cap._BQC = 1; | |
90130268 | 655 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 656 | device->cap._DDC = 1; |
1da177e4 | 657 | } |
90130268 | 658 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
659 | device->cap._DCS = 1; |
660 | } | |
90130268 | 661 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
662 | device->cap._DGS = 1; |
663 | } | |
90130268 | 664 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
665 | device->cap._DSS = 1; |
666 | } | |
667 | ||
f70ac0e9 DK |
668 | if (ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { |
669 | ||
670 | if (obj->package.count >= 2) { | |
671 | int count = 0; | |
672 | union acpi_object *o; | |
673 | ||
674 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
675 | if (!br) { | |
676 | printk(KERN_ERR "can't allocate memory\n"); | |
1da177e4 | 677 | } else { |
f70ac0e9 DK |
678 | br->levels = kmalloc(obj->package.count * |
679 | sizeof *(br->levels), GFP_KERNEL); | |
680 | if (!br->levels) | |
681 | goto out; | |
682 | ||
683 | for (i = 0; i < obj->package.count; i++) { | |
684 | o = (union acpi_object *)&obj->package. | |
685 | elements[i]; | |
686 | if (o->type != ACPI_TYPE_INTEGER) { | |
687 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
688 | continue; | |
689 | } | |
690 | br->levels[count] = (u32) o->integer.value; | |
691 | ||
692 | if (br->levels[count] > max_level) | |
693 | max_level = br->levels[count]; | |
694 | count++; | |
695 | } | |
696 | out: | |
697 | if (count < 2) { | |
698 | kfree(br->levels); | |
699 | kfree(br); | |
700 | } else { | |
701 | br->count = count; | |
702 | device->brightness = br; | |
703 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
704 | "found %d brightness levels\n", | |
705 | count)); | |
706 | } | |
1da177e4 LT |
707 | } |
708 | } | |
f70ac0e9 DK |
709 | |
710 | } else { | |
711 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available LCD brightness level\n")); | |
1da177e4 LT |
712 | } |
713 | ||
d1dd0c23 | 714 | kfree(obj); |
1da177e4 | 715 | |
f70ac0e9 | 716 | if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){ |
702ed512 | 717 | int result; |
2f3d000a YL |
718 | static int count = 0; |
719 | char *name; | |
2f3d000a YL |
720 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
721 | if (!name) | |
722 | return; | |
723 | ||
2f3d000a | 724 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 725 | device->backlight = backlight_device_register(name, |
599a52d1 | 726 | NULL, device, &acpi_backlight_ops); |
38531e6f MG |
727 | device->backlight->props.max_brightness = device->brightness->count-3; |
728 | device->backlight->props.brightness = acpi_video_get_brightness(device->backlight); | |
599a52d1 | 729 | backlight_update_status(device->backlight); |
2f3d000a | 730 | kfree(name); |
702ed512 ZR |
731 | |
732 | device->cdev = thermal_cooling_device_register("LCD", | |
733 | device->dev, &video_cooling_ops); | |
43ff39f2 TS |
734 | if (IS_ERR(device->cdev)) |
735 | return; | |
736 | ||
702ed512 ZR |
737 | if (device->cdev) { |
738 | printk(KERN_INFO PREFIX | |
739 | "%s is registered as cooling_device%d\n", | |
740 | device->dev->dev.bus_id, device->cdev->id); | |
741 | result = sysfs_create_link(&device->dev->dev.kobj, | |
742 | &device->cdev->device.kobj, | |
743 | "thermal_cooling"); | |
744 | if (result) | |
745 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
746 | result = sysfs_create_link(&device->cdev->device.kobj, | |
747 | &device->dev->dev.kobj, | |
748 | "device"); | |
749 | if (result) | |
750 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
751 | } | |
2f3d000a | 752 | } |
23b0f015 LY |
753 | if (device->cap._DCS && device->cap._DSS){ |
754 | static int count = 0; | |
755 | char *name; | |
756 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
757 | if (!name) | |
758 | return; | |
759 | sprintf(name, "acpi_video%d", count++); | |
760 | device->output_dev = video_output_register(name, | |
761 | NULL, device, &acpi_output_properties); | |
762 | kfree(name); | |
763 | } | |
d550d98d | 764 | return; |
1da177e4 LT |
765 | } |
766 | ||
767 | /* | |
768 | * Arg: | |
769 | * device : video output device (VGA) | |
770 | * | |
771 | * Return Value: | |
772 | * None | |
773 | * | |
98fb8fe1 | 774 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
775 | */ |
776 | ||
4be44fcd | 777 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 778 | { |
4be44fcd | 779 | acpi_handle h_dummy1; |
1da177e4 | 780 | |
98934def | 781 | memset(&video->cap, 0, sizeof(video->cap)); |
90130268 | 782 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
783 | video->cap._DOS = 1; |
784 | } | |
90130268 | 785 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
786 | video->cap._DOD = 1; |
787 | } | |
90130268 | 788 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
789 | video->cap._ROM = 1; |
790 | } | |
90130268 | 791 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
792 | video->cap._GPD = 1; |
793 | } | |
90130268 | 794 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
795 | video->cap._SPD = 1; |
796 | } | |
90130268 | 797 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
798 | video->cap._VPO = 1; |
799 | } | |
800 | } | |
801 | ||
802 | /* | |
803 | * Check whether the video bus device has required AML method to | |
804 | * support the desired features | |
805 | */ | |
806 | ||
4be44fcd | 807 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 808 | { |
4be44fcd | 809 | acpi_status status = -ENOENT; |
3fa2cdcc MG |
810 | long device_id; |
811 | struct device *dev; | |
812 | struct acpi_device *device; | |
1da177e4 LT |
813 | |
814 | if (!video) | |
d550d98d | 815 | return -EINVAL; |
1da177e4 | 816 | |
3fa2cdcc MG |
817 | device = video->device; |
818 | ||
819 | status = | |
820 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
821 | ||
822 | if (!ACPI_SUCCESS(status)) | |
823 | return -ENODEV; | |
824 | ||
825 | /* We need to attempt to determine whether the _ADR refers to a | |
826 | PCI device or not. There's no terribly good way to do this, | |
827 | so the best we can hope for is to assume that there'll never | |
828 | be a video device in the host bridge */ | |
829 | if (device_id >= 0x10000) { | |
830 | /* It looks like a PCI device. Does it exist? */ | |
831 | dev = acpi_get_physical_device(device->handle); | |
832 | } else { | |
833 | /* It doesn't look like a PCI device. Does its parent | |
834 | exist? */ | |
835 | acpi_handle phandle; | |
836 | if (acpi_get_parent(device->handle, &phandle)) | |
837 | return -ENODEV; | |
838 | dev = acpi_get_physical_device(phandle); | |
839 | } | |
840 | if (!dev) | |
841 | return -ENODEV; | |
842 | put_device(dev); | |
843 | ||
1da177e4 LT |
844 | /* Since there is no HID, CID and so on for VGA driver, we have |
845 | * to check well known required nodes. | |
846 | */ | |
847 | ||
98fb8fe1 | 848 | /* Does this device support video switching? */ |
4be44fcd | 849 | if (video->cap._DOS) { |
1da177e4 LT |
850 | video->flags.multihead = 1; |
851 | status = 0; | |
852 | } | |
853 | ||
98fb8fe1 | 854 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 855 | if (video->cap._ROM) { |
1da177e4 LT |
856 | video->flags.rom = 1; |
857 | status = 0; | |
858 | } | |
859 | ||
98fb8fe1 | 860 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 861 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
862 | video->flags.post = 1; |
863 | status = 0; | |
864 | } | |
865 | ||
d550d98d | 866 | return status; |
1da177e4 LT |
867 | } |
868 | ||
869 | /* -------------------------------------------------------------------------- | |
870 | FS Interface (/proc) | |
871 | -------------------------------------------------------------------------- */ | |
872 | ||
4be44fcd | 873 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
874 | |
875 | /* video devices */ | |
876 | ||
4be44fcd | 877 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 878 | { |
50dd0969 | 879 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 880 | |
1da177e4 LT |
881 | |
882 | if (!dev) | |
883 | goto end; | |
884 | ||
885 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
886 | seq_printf(seq, "type: "); | |
887 | if (dev->flags.crt) | |
888 | seq_printf(seq, "CRT\n"); | |
889 | else if (dev->flags.lcd) | |
890 | seq_printf(seq, "LCD\n"); | |
891 | else if (dev->flags.tvout) | |
892 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
893 | else if (dev->flags.dvi) |
894 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
895 | else |
896 | seq_printf(seq, "UNKNOWN\n"); | |
897 | ||
4be44fcd | 898 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 899 | |
4be44fcd | 900 | end: |
d550d98d | 901 | return 0; |
1da177e4 LT |
902 | } |
903 | ||
904 | static int | |
4be44fcd | 905 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
906 | { |
907 | return single_open(file, acpi_video_device_info_seq_show, | |
908 | PDE(inode)->data); | |
909 | } | |
910 | ||
4be44fcd | 911 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 912 | { |
4be44fcd | 913 | int status; |
50dd0969 | 914 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 915 | unsigned long state; |
1da177e4 | 916 | |
1da177e4 LT |
917 | |
918 | if (!dev) | |
919 | goto end; | |
920 | ||
921 | status = acpi_video_device_get_state(dev, &state); | |
922 | seq_printf(seq, "state: "); | |
923 | if (ACPI_SUCCESS(status)) | |
924 | seq_printf(seq, "0x%02lx\n", state); | |
925 | else | |
926 | seq_printf(seq, "<not supported>\n"); | |
927 | ||
928 | status = acpi_video_device_query(dev, &state); | |
929 | seq_printf(seq, "query: "); | |
930 | if (ACPI_SUCCESS(status)) | |
931 | seq_printf(seq, "0x%02lx\n", state); | |
932 | else | |
933 | seq_printf(seq, "<not supported>\n"); | |
934 | ||
4be44fcd | 935 | end: |
d550d98d | 936 | return 0; |
1da177e4 LT |
937 | } |
938 | ||
939 | static int | |
4be44fcd | 940 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
941 | { |
942 | return single_open(file, acpi_video_device_state_seq_show, | |
943 | PDE(inode)->data); | |
944 | } | |
945 | ||
946 | static ssize_t | |
4be44fcd LB |
947 | acpi_video_device_write_state(struct file *file, |
948 | const char __user * buffer, | |
949 | size_t count, loff_t * data) | |
1da177e4 | 950 | { |
4be44fcd | 951 | int status; |
50dd0969 JE |
952 | struct seq_file *m = file->private_data; |
953 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
954 | char str[12] = { 0 }; |
955 | u32 state = 0; | |
1da177e4 | 956 | |
1da177e4 LT |
957 | |
958 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 959 | return -EINVAL; |
1da177e4 LT |
960 | |
961 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 962 | return -EFAULT; |
1da177e4 LT |
963 | |
964 | str[count] = 0; | |
965 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 966 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
967 | |
968 | status = acpi_video_device_set_state(dev, state); | |
969 | ||
970 | if (status) | |
d550d98d | 971 | return -EFAULT; |
1da177e4 | 972 | |
d550d98d | 973 | return count; |
1da177e4 LT |
974 | } |
975 | ||
976 | static int | |
4be44fcd | 977 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 978 | { |
50dd0969 | 979 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 980 | int i; |
1da177e4 | 981 | |
1da177e4 LT |
982 | |
983 | if (!dev || !dev->brightness) { | |
984 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 985 | return 0; |
1da177e4 LT |
986 | } |
987 | ||
988 | seq_printf(seq, "levels: "); | |
989 | for (i = 0; i < dev->brightness->count; i++) | |
990 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
991 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
992 | ||
d550d98d | 993 | return 0; |
1da177e4 LT |
994 | } |
995 | ||
996 | static int | |
4be44fcd | 997 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
998 | { |
999 | return single_open(file, acpi_video_device_brightness_seq_show, | |
1000 | PDE(inode)->data); | |
1001 | } | |
1002 | ||
1003 | static ssize_t | |
4be44fcd LB |
1004 | acpi_video_device_write_brightness(struct file *file, |
1005 | const char __user * buffer, | |
1006 | size_t count, loff_t * data) | |
1da177e4 | 1007 | { |
50dd0969 JE |
1008 | struct seq_file *m = file->private_data; |
1009 | struct acpi_video_device *dev = m->private; | |
c88c5786 | 1010 | char str[5] = { 0 }; |
4be44fcd LB |
1011 | unsigned int level = 0; |
1012 | int i; | |
1da177e4 | 1013 | |
1da177e4 | 1014 | |
59d399d3 | 1015 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 1016 | return -EINVAL; |
1da177e4 LT |
1017 | |
1018 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1019 | return -EFAULT; |
1da177e4 LT |
1020 | |
1021 | str[count] = 0; | |
1022 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1023 | |
1da177e4 | 1024 | if (level > 100) |
d550d98d | 1025 | return -EFAULT; |
1da177e4 | 1026 | |
98fb8fe1 | 1027 | /* validate through the list of available levels */ |
1da177e4 LT |
1028 | for (i = 0; i < dev->brightness->count; i++) |
1029 | if (level == dev->brightness->levels[i]) { | |
4be44fcd LB |
1030 | if (ACPI_SUCCESS |
1031 | (acpi_video_device_lcd_set_level(dev, level))) | |
1da177e4 LT |
1032 | dev->brightness->curr = level; |
1033 | break; | |
1034 | } | |
1035 | ||
d550d98d | 1036 | return count; |
1da177e4 LT |
1037 | } |
1038 | ||
4be44fcd | 1039 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1040 | { |
50dd0969 | 1041 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
1042 | int status; |
1043 | int i; | |
1044 | union acpi_object *edid = NULL; | |
1da177e4 | 1045 | |
1da177e4 LT |
1046 | |
1047 | if (!dev) | |
1048 | goto out; | |
1049 | ||
4be44fcd | 1050 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 1051 | if (ACPI_FAILURE(status)) { |
4be44fcd | 1052 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
1053 | } |
1054 | ||
1055 | if (ACPI_FAILURE(status)) { | |
1056 | goto out; | |
1057 | } | |
1058 | ||
1059 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
1060 | for (i = 0; i < edid->buffer.length; i++) | |
1061 | seq_putc(seq, edid->buffer.pointer[i]); | |
1062 | } | |
1063 | ||
4be44fcd | 1064 | out: |
1da177e4 LT |
1065 | if (!edid) |
1066 | seq_printf(seq, "<not supported>\n"); | |
1067 | else | |
1068 | kfree(edid); | |
1069 | ||
d550d98d | 1070 | return 0; |
1da177e4 LT |
1071 | } |
1072 | ||
1073 | static int | |
4be44fcd | 1074 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1075 | { |
1076 | return single_open(file, acpi_video_device_EDID_seq_show, | |
1077 | PDE(inode)->data); | |
1078 | } | |
1079 | ||
4be44fcd | 1080 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 1081 | { |
4be44fcd | 1082 | struct proc_dir_entry *entry = NULL; |
1da177e4 LT |
1083 | struct acpi_video_device *vid_dev; |
1084 | ||
1da177e4 LT |
1085 | |
1086 | if (!device) | |
d550d98d | 1087 | return -ENODEV; |
1da177e4 | 1088 | |
50dd0969 | 1089 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1090 | if (!vid_dev) |
d550d98d | 1091 | return -ENODEV; |
1da177e4 LT |
1092 | |
1093 | if (!acpi_device_dir(device)) { | |
1094 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1095 | vid_dev->video->dir); |
1da177e4 | 1096 | if (!acpi_device_dir(device)) |
d550d98d | 1097 | return -ENODEV; |
1da177e4 LT |
1098 | acpi_device_dir(device)->owner = THIS_MODULE; |
1099 | } | |
1100 | ||
1101 | /* 'info' [R] */ | |
1102 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1103 | if (!entry) | |
d550d98d | 1104 | return -ENODEV; |
1da177e4 LT |
1105 | else { |
1106 | entry->proc_fops = &acpi_video_device_info_fops; | |
1107 | entry->data = acpi_driver_data(device); | |
1108 | entry->owner = THIS_MODULE; | |
1109 | } | |
1110 | ||
1111 | /* 'state' [R/W] */ | |
4be44fcd LB |
1112 | entry = |
1113 | create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR, | |
1114 | acpi_device_dir(device)); | |
1da177e4 | 1115 | if (!entry) |
d550d98d | 1116 | return -ENODEV; |
1da177e4 | 1117 | else { |
d479e908 | 1118 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1da177e4 | 1119 | entry->proc_fops = &acpi_video_device_state_fops; |
1da177e4 LT |
1120 | entry->data = acpi_driver_data(device); |
1121 | entry->owner = THIS_MODULE; | |
1122 | } | |
1123 | ||
1124 | /* 'brightness' [R/W] */ | |
4be44fcd LB |
1125 | entry = |
1126 | create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
1127 | acpi_device_dir(device)); | |
1da177e4 | 1128 | if (!entry) |
d550d98d | 1129 | return -ENODEV; |
1da177e4 | 1130 | else { |
d479e908 | 1131 | acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness; |
1da177e4 | 1132 | entry->proc_fops = &acpi_video_device_brightness_fops; |
1da177e4 LT |
1133 | entry->data = acpi_driver_data(device); |
1134 | entry->owner = THIS_MODULE; | |
1135 | } | |
1136 | ||
1137 | /* 'EDID' [R] */ | |
1138 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); | |
1139 | if (!entry) | |
d550d98d | 1140 | return -ENODEV; |
1da177e4 LT |
1141 | else { |
1142 | entry->proc_fops = &acpi_video_device_EDID_fops; | |
1143 | entry->data = acpi_driver_data(device); | |
1144 | entry->owner = THIS_MODULE; | |
1145 | } | |
1146 | ||
d550d98d | 1147 | return 0; |
1da177e4 LT |
1148 | } |
1149 | ||
4be44fcd | 1150 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1151 | { |
1152 | struct acpi_video_device *vid_dev; | |
1da177e4 | 1153 | |
50dd0969 | 1154 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1155 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 1156 | return -ENODEV; |
1da177e4 LT |
1157 | |
1158 | if (acpi_device_dir(device)) { | |
1159 | remove_proc_entry("info", acpi_device_dir(device)); | |
1160 | remove_proc_entry("state", acpi_device_dir(device)); | |
1161 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
1162 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
4be44fcd | 1163 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1164 | acpi_device_dir(device) = NULL; |
1165 | } | |
1166 | ||
d550d98d | 1167 | return 0; |
1da177e4 LT |
1168 | } |
1169 | ||
1da177e4 | 1170 | /* video bus */ |
4be44fcd | 1171 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1172 | { |
50dd0969 | 1173 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1174 | |
1da177e4 LT |
1175 | |
1176 | if (!video) | |
1177 | goto end; | |
1178 | ||
1179 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1180 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1181 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1182 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1183 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1184 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1185 | |
4be44fcd | 1186 | end: |
d550d98d | 1187 | return 0; |
1da177e4 LT |
1188 | } |
1189 | ||
4be44fcd | 1190 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1191 | { |
4be44fcd LB |
1192 | return single_open(file, acpi_video_bus_info_seq_show, |
1193 | PDE(inode)->data); | |
1da177e4 LT |
1194 | } |
1195 | ||
4be44fcd | 1196 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1197 | { |
50dd0969 | 1198 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1199 | |
1da177e4 LT |
1200 | |
1201 | if (!video) | |
1202 | goto end; | |
1203 | ||
1204 | printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__); | |
1205 | seq_printf(seq, "<TODO>\n"); | |
1206 | ||
4be44fcd | 1207 | end: |
d550d98d | 1208 | return 0; |
1da177e4 LT |
1209 | } |
1210 | ||
4be44fcd | 1211 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1212 | { |
1213 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1214 | } | |
1215 | ||
4be44fcd | 1216 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1217 | { |
50dd0969 | 1218 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1219 | unsigned long options; |
1220 | int status; | |
1da177e4 | 1221 | |
1da177e4 LT |
1222 | |
1223 | if (!video) | |
1224 | goto end; | |
1225 | ||
1226 | status = acpi_video_bus_POST_options(video, &options); | |
1227 | if (ACPI_SUCCESS(status)) { | |
1228 | if (!(options & 1)) { | |
4be44fcd LB |
1229 | printk(KERN_WARNING PREFIX |
1230 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1231 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1232 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 LT |
1233 | } |
1234 | printk("%lx\n", options); | |
98fb8fe1 | 1235 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1236 | if (options & 2) |
1237 | seq_printf(seq, " <PCI video>"); | |
1238 | if (options & 4) | |
1239 | seq_printf(seq, " <AGP video>"); | |
1240 | seq_putc(seq, '\n'); | |
1241 | } else | |
1242 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1243 | end: |
d550d98d | 1244 | return 0; |
1da177e4 LT |
1245 | } |
1246 | ||
1247 | static int | |
4be44fcd | 1248 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1249 | { |
4be44fcd LB |
1250 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1251 | PDE(inode)->data); | |
1da177e4 LT |
1252 | } |
1253 | ||
4be44fcd | 1254 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1255 | { |
50dd0969 | 1256 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1257 | int status; |
1258 | unsigned long id; | |
1da177e4 | 1259 | |
1da177e4 LT |
1260 | |
1261 | if (!video) | |
1262 | goto end; | |
1263 | ||
4be44fcd | 1264 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1265 | if (!ACPI_SUCCESS(status)) { |
1266 | seq_printf(seq, "<not supported>\n"); | |
1267 | goto end; | |
1268 | } | |
98fb8fe1 | 1269 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1270 | |
4be44fcd | 1271 | end: |
d550d98d | 1272 | return 0; |
1da177e4 LT |
1273 | } |
1274 | ||
4be44fcd | 1275 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1276 | { |
50dd0969 | 1277 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1278 | |
1da177e4 | 1279 | |
4be44fcd | 1280 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1281 | |
d550d98d | 1282 | return 0; |
1da177e4 LT |
1283 | } |
1284 | ||
4be44fcd | 1285 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1286 | { |
4be44fcd LB |
1287 | return single_open(file, acpi_video_bus_POST_seq_show, |
1288 | PDE(inode)->data); | |
1da177e4 LT |
1289 | } |
1290 | ||
4be44fcd | 1291 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1292 | { |
1293 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1294 | } | |
1295 | ||
1296 | static ssize_t | |
4be44fcd LB |
1297 | acpi_video_bus_write_POST(struct file *file, |
1298 | const char __user * buffer, | |
1299 | size_t count, loff_t * data) | |
1da177e4 | 1300 | { |
4be44fcd | 1301 | int status; |
50dd0969 JE |
1302 | struct seq_file *m = file->private_data; |
1303 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1304 | char str[12] = { 0 }; |
1305 | unsigned long opt, options; | |
1da177e4 | 1306 | |
1da177e4 | 1307 | |
1da177e4 | 1308 | if (!video || count + 1 > sizeof str) |
d550d98d | 1309 | return -EINVAL; |
1da177e4 LT |
1310 | |
1311 | status = acpi_video_bus_POST_options(video, &options); | |
1312 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1313 | return -EINVAL; |
1da177e4 LT |
1314 | |
1315 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1316 | return -EFAULT; |
1da177e4 LT |
1317 | |
1318 | str[count] = 0; | |
1319 | opt = strtoul(str, NULL, 0); | |
1320 | if (opt > 3) | |
d550d98d | 1321 | return -EFAULT; |
1da177e4 | 1322 | |
98fb8fe1 | 1323 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1324 | options |= 1; |
1325 | ||
1326 | if (options & (1ul << opt)) { | |
4be44fcd | 1327 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1328 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1329 | return -EFAULT; |
1da177e4 LT |
1330 | |
1331 | } | |
1332 | ||
d550d98d | 1333 | return count; |
1da177e4 LT |
1334 | } |
1335 | ||
1336 | static ssize_t | |
4be44fcd LB |
1337 | acpi_video_bus_write_DOS(struct file *file, |
1338 | const char __user * buffer, | |
1339 | size_t count, loff_t * data) | |
1da177e4 | 1340 | { |
4be44fcd | 1341 | int status; |
50dd0969 JE |
1342 | struct seq_file *m = file->private_data; |
1343 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1344 | char str[12] = { 0 }; |
1345 | unsigned long opt; | |
1da177e4 | 1346 | |
1da177e4 | 1347 | |
1da177e4 | 1348 | if (!video || count + 1 > sizeof str) |
d550d98d | 1349 | return -EINVAL; |
1da177e4 LT |
1350 | |
1351 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1352 | return -EFAULT; |
1da177e4 LT |
1353 | |
1354 | str[count] = 0; | |
1355 | opt = strtoul(str, NULL, 0); | |
1356 | if (opt > 7) | |
d550d98d | 1357 | return -EFAULT; |
1da177e4 | 1358 | |
4be44fcd | 1359 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1360 | |
1361 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1362 | return -EFAULT; |
1da177e4 | 1363 | |
d550d98d | 1364 | return count; |
1da177e4 LT |
1365 | } |
1366 | ||
4be44fcd | 1367 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1368 | { |
0119509c MG |
1369 | long device_id; |
1370 | int status; | |
4be44fcd LB |
1371 | struct proc_dir_entry *entry = NULL; |
1372 | struct acpi_video_bus *video; | |
0119509c MG |
1373 | struct device *dev; |
1374 | ||
1375 | status = | |
1376 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1377 | ||
1378 | if (!ACPI_SUCCESS(status)) | |
1379 | return -ENODEV; | |
1380 | ||
1381 | /* We need to attempt to determine whether the _ADR refers to a | |
1382 | PCI device or not. There's no terribly good way to do this, | |
1383 | so the best we can hope for is to assume that there'll never | |
1384 | be a video device in the host bridge */ | |
1385 | if (device_id >= 0x10000) { | |
1386 | /* It looks like a PCI device. Does it exist? */ | |
1387 | dev = acpi_get_physical_device(device->handle); | |
1388 | } else { | |
1389 | /* It doesn't look like a PCI device. Does its parent | |
1390 | exist? */ | |
1391 | acpi_handle phandle; | |
1392 | if (acpi_get_parent(device->handle, &phandle)) | |
1393 | return -ENODEV; | |
1394 | dev = acpi_get_physical_device(phandle); | |
1395 | } | |
1396 | if (!dev) | |
1397 | return -ENODEV; | |
1398 | put_device(dev); | |
1399 | ||
1da177e4 | 1400 | |
1da177e4 | 1401 | |
50dd0969 | 1402 | video = acpi_driver_data(device); |
1da177e4 LT |
1403 | |
1404 | if (!acpi_device_dir(device)) { | |
1405 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1406 | acpi_video_dir); |
1da177e4 | 1407 | if (!acpi_device_dir(device)) |
d550d98d | 1408 | return -ENODEV; |
1da177e4 LT |
1409 | video->dir = acpi_device_dir(device); |
1410 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1411 | } | |
1412 | ||
1413 | /* 'info' [R] */ | |
1414 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1415 | if (!entry) | |
d550d98d | 1416 | return -ENODEV; |
1da177e4 LT |
1417 | else { |
1418 | entry->proc_fops = &acpi_video_bus_info_fops; | |
1419 | entry->data = acpi_driver_data(device); | |
1420 | entry->owner = THIS_MODULE; | |
1421 | } | |
1422 | ||
1423 | /* 'ROM' [R] */ | |
1424 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); | |
1425 | if (!entry) | |
d550d98d | 1426 | return -ENODEV; |
1da177e4 LT |
1427 | else { |
1428 | entry->proc_fops = &acpi_video_bus_ROM_fops; | |
1429 | entry->data = acpi_driver_data(device); | |
1430 | entry->owner = THIS_MODULE; | |
1431 | } | |
1432 | ||
1433 | /* 'POST_info' [R] */ | |
4be44fcd LB |
1434 | entry = |
1435 | create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); | |
1da177e4 | 1436 | if (!entry) |
d550d98d | 1437 | return -ENODEV; |
1da177e4 LT |
1438 | else { |
1439 | entry->proc_fops = &acpi_video_bus_POST_info_fops; | |
1440 | entry->data = acpi_driver_data(device); | |
1441 | entry->owner = THIS_MODULE; | |
1442 | } | |
1443 | ||
1444 | /* 'POST' [R/W] */ | |
4be44fcd LB |
1445 | entry = |
1446 | create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR, | |
1447 | acpi_device_dir(device)); | |
1da177e4 | 1448 | if (!entry) |
d550d98d | 1449 | return -ENODEV; |
1da177e4 | 1450 | else { |
d479e908 | 1451 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
1da177e4 | 1452 | entry->proc_fops = &acpi_video_bus_POST_fops; |
1da177e4 LT |
1453 | entry->data = acpi_driver_data(device); |
1454 | entry->owner = THIS_MODULE; | |
1455 | } | |
1456 | ||
1457 | /* 'DOS' [R/W] */ | |
4be44fcd LB |
1458 | entry = |
1459 | create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR, | |
1460 | acpi_device_dir(device)); | |
1da177e4 | 1461 | if (!entry) |
d550d98d | 1462 | return -ENODEV; |
1da177e4 | 1463 | else { |
d479e908 | 1464 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
1da177e4 | 1465 | entry->proc_fops = &acpi_video_bus_DOS_fops; |
1da177e4 LT |
1466 | entry->data = acpi_driver_data(device); |
1467 | entry->owner = THIS_MODULE; | |
1468 | } | |
1469 | ||
d550d98d | 1470 | return 0; |
1da177e4 LT |
1471 | } |
1472 | ||
4be44fcd | 1473 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1474 | { |
4be44fcd | 1475 | struct acpi_video_bus *video; |
1da177e4 | 1476 | |
1da177e4 | 1477 | |
50dd0969 | 1478 | video = acpi_driver_data(device); |
1da177e4 LT |
1479 | |
1480 | if (acpi_device_dir(device)) { | |
1481 | remove_proc_entry("info", acpi_device_dir(device)); | |
1482 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1483 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1484 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1485 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
4be44fcd | 1486 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1487 | acpi_device_dir(device) = NULL; |
1488 | } | |
1489 | ||
d550d98d | 1490 | return 0; |
1da177e4 LT |
1491 | } |
1492 | ||
1493 | /* -------------------------------------------------------------------------- | |
1494 | Driver Interface | |
1495 | -------------------------------------------------------------------------- */ | |
1496 | ||
1497 | /* device interface */ | |
82cae999 RZ |
1498 | static struct acpi_video_device_attrib* |
1499 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1500 | { | |
1501 | int count; | |
1502 | ||
1503 | for(count = 0; count < video->attached_count; count++) | |
1504 | if((video->attached_array[count].value.int_val & 0xffff) == device_id) | |
1505 | return &(video->attached_array[count].value.attrib); | |
1506 | return NULL; | |
1507 | } | |
1da177e4 LT |
1508 | |
1509 | static int | |
4be44fcd LB |
1510 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1511 | struct acpi_video_bus *video) | |
1da177e4 | 1512 | { |
4be44fcd | 1513 | unsigned long device_id; |
973bf491 | 1514 | int status; |
4be44fcd | 1515 | struct acpi_video_device *data; |
82cae999 | 1516 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1517 | |
1518 | if (!device || !video) | |
d550d98d | 1519 | return -EINVAL; |
1da177e4 | 1520 | |
4be44fcd LB |
1521 | status = |
1522 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1523 | if (ACPI_SUCCESS(status)) { |
1524 | ||
36bcbec7 | 1525 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1526 | if (!data) |
d550d98d | 1527 | return -ENOMEM; |
1da177e4 | 1528 | |
1da177e4 LT |
1529 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1530 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1531 | acpi_driver_data(device) = data; | |
1532 | ||
1533 | data->device_id = device_id; | |
1534 | data->video = video; | |
1535 | data->dev = device; | |
1536 | ||
82cae999 RZ |
1537 | attribute = acpi_video_get_device_attr(video, device_id); |
1538 | ||
1539 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1540 | switch (attribute->display_type) { | |
1541 | case ACPI_VIDEO_DISPLAY_CRT: | |
1542 | data->flags.crt = 1; | |
1543 | break; | |
1544 | case ACPI_VIDEO_DISPLAY_TV: | |
1545 | data->flags.tvout = 1; | |
1546 | break; | |
1547 | case ACPI_VIDEO_DISPLAY_DVI: | |
1548 | data->flags.dvi = 1; | |
1549 | break; | |
1550 | case ACPI_VIDEO_DISPLAY_LCD: | |
1551 | data->flags.lcd = 1; | |
1552 | break; | |
1553 | default: | |
1554 | data->flags.unknown = 1; | |
1555 | break; | |
1556 | } | |
1557 | if(attribute->bios_can_detect) | |
1558 | data->flags.bios = 1; | |
1559 | } else | |
1da177e4 | 1560 | data->flags.unknown = 1; |
4be44fcd | 1561 | |
1da177e4 LT |
1562 | acpi_video_device_bind(video, data); |
1563 | acpi_video_device_find_cap(data); | |
1564 | ||
90130268 | 1565 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1566 | ACPI_DEVICE_NOTIFY, |
1567 | acpi_video_device_notify, | |
1568 | data); | |
1da177e4 LT |
1569 | if (ACPI_FAILURE(status)) { |
1570 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1571 | "Error installing notify handler\n")); |
973bf491 YL |
1572 | if(data->brightness) |
1573 | kfree(data->brightness->levels); | |
1574 | kfree(data->brightness); | |
1575 | kfree(data); | |
1576 | return -ENODEV; | |
1da177e4 LT |
1577 | } |
1578 | ||
bbac81f5 | 1579 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1580 | list_add_tail(&data->entry, &video->video_device_list); |
bbac81f5 | 1581 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1582 | |
1583 | acpi_video_device_add_fs(device); | |
1584 | ||
d550d98d | 1585 | return 0; |
1da177e4 LT |
1586 | } |
1587 | ||
d550d98d | 1588 | return -ENOENT; |
1da177e4 LT |
1589 | } |
1590 | ||
1591 | /* | |
1592 | * Arg: | |
1593 | * video : video bus device | |
1594 | * | |
1595 | * Return: | |
1596 | * none | |
1597 | * | |
1598 | * Enumerate the video device list of the video bus, | |
1599 | * bind the ids with the corresponding video devices | |
1600 | * under the video bus. | |
4be44fcd | 1601 | */ |
1da177e4 | 1602 | |
4be44fcd | 1603 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1604 | { |
ff102ea9 DT |
1605 | struct acpi_video_device *dev; |
1606 | ||
bbac81f5 | 1607 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1608 | |
1609 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1610 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1611 | |
bbac81f5 | 1612 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1613 | } |
1614 | ||
1615 | /* | |
1616 | * Arg: | |
1617 | * video : video bus device | |
1618 | * device : video output device under the video | |
1619 | * bus | |
1620 | * | |
1621 | * Return: | |
1622 | * none | |
1623 | * | |
1624 | * Bind the ids with the corresponding video devices | |
1625 | * under the video bus. | |
4be44fcd | 1626 | */ |
1da177e4 LT |
1627 | |
1628 | static void | |
4be44fcd LB |
1629 | acpi_video_device_bind(struct acpi_video_bus *video, |
1630 | struct acpi_video_device *device) | |
1da177e4 | 1631 | { |
4be44fcd | 1632 | int i; |
1da177e4 LT |
1633 | |
1634 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1635 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
4be44fcd LB |
1636 | |
1637 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1638 | i < video->attached_count; i++) { | |
1639 | if (device->device_id == (IDS_VAL(i) & 0xffff)) { | |
1da177e4 LT |
1640 | IDS_BIND(i) = device; |
1641 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1642 | } | |
1643 | } | |
1644 | #undef IDS_VAL | |
1645 | #undef IDS_BIND | |
1646 | } | |
1647 | ||
1648 | /* | |
1649 | * Arg: | |
1650 | * video : video bus device | |
1651 | * | |
1652 | * Return: | |
1653 | * < 0 : error | |
1654 | * | |
1655 | * Call _DOD to enumerate all devices attached to display adapter | |
1656 | * | |
4be44fcd | 1657 | */ |
1da177e4 LT |
1658 | |
1659 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1660 | { | |
4be44fcd LB |
1661 | int status; |
1662 | int count; | |
1663 | int i; | |
1da177e4 | 1664 | struct acpi_video_enumerated_device *active_device_list; |
4be44fcd LB |
1665 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1666 | union acpi_object *dod = NULL; | |
1667 | union acpi_object *obj; | |
1da177e4 | 1668 | |
90130268 | 1669 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1670 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1671 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1672 | return status; |
1da177e4 LT |
1673 | } |
1674 | ||
50dd0969 | 1675 | dod = buffer.pointer; |
1da177e4 | 1676 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1677 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1678 | status = -EFAULT; |
1679 | goto out; | |
1680 | } | |
1681 | ||
1682 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1683 | dod->package.count)); |
1da177e4 | 1684 | |
4be44fcd LB |
1685 | active_device_list = kmalloc((1 + |
1686 | dod->package.count) * | |
1687 | sizeof(struct | |
1688 | acpi_video_enumerated_device), | |
1689 | GFP_KERNEL); | |
1da177e4 LT |
1690 | |
1691 | if (!active_device_list) { | |
1692 | status = -ENOMEM; | |
1693 | goto out; | |
1694 | } | |
1695 | ||
1696 | count = 0; | |
1697 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1698 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1699 | |
1700 | if (obj->type != ACPI_TYPE_INTEGER) { | |
6468463a | 1701 | printk(KERN_ERR PREFIX "Invalid _DOD data\n"); |
4be44fcd LB |
1702 | active_device_list[i].value.int_val = |
1703 | ACPI_VIDEO_HEAD_INVALID; | |
1da177e4 LT |
1704 | } |
1705 | active_device_list[i].value.int_val = obj->integer.value; | |
1706 | active_device_list[i].bind_info = NULL; | |
4be44fcd LB |
1707 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1708 | (int)obj->integer.value)); | |
1da177e4 LT |
1709 | count++; |
1710 | } | |
1711 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1712 | ||
6044ec88 | 1713 | kfree(video->attached_array); |
4be44fcd | 1714 | |
1da177e4 LT |
1715 | video->attached_array = active_device_list; |
1716 | video->attached_count = count; | |
4be44fcd | 1717 | out: |
02438d87 | 1718 | kfree(buffer.pointer); |
d550d98d | 1719 | return status; |
1da177e4 LT |
1720 | } |
1721 | ||
4be44fcd LB |
1722 | static int |
1723 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1724 | u32 level_current, u32 event) | |
1da177e4 | 1725 | { |
63f0edfc | 1726 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
1727 | max = max_below = 0; |
1728 | min = min_above = 255; | |
63f0edfc AS |
1729 | /* Find closest level to level_current */ |
1730 | for (i = 0; i < device->brightness->count; i++) { | |
1731 | l = device->brightness->levels[i]; | |
1732 | if (abs(l - level_current) < abs(delta)) { | |
1733 | delta = l - level_current; | |
1734 | if (!delta) | |
1735 | break; | |
1736 | } | |
1737 | } | |
1738 | /* Ajust level_current to closest available level */ | |
1739 | level_current += delta; | |
f4715189 TT |
1740 | for (i = 0; i < device->brightness->count; i++) { |
1741 | l = device->brightness->levels[i]; | |
1742 | if (l < min) | |
1743 | min = l; | |
1744 | if (l > max) | |
1745 | max = l; | |
1746 | if (l < min_above && l > level_current) | |
1747 | min_above = l; | |
1748 | if (l > max_below && l < level_current) | |
1749 | max_below = l; | |
1750 | } | |
1751 | ||
1752 | switch (event) { | |
1753 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1754 | return (level_current < max) ? min_above : min; | |
1755 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1756 | return (level_current < max) ? min_above : max; | |
1757 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1758 | return (level_current > min) ? max_below : min; | |
1759 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1760 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1761 | return 0; | |
1762 | default: | |
1763 | return level_current; | |
1764 | } | |
1da177e4 LT |
1765 | } |
1766 | ||
1da177e4 | 1767 | static void |
4be44fcd | 1768 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 LT |
1769 | { |
1770 | unsigned long level_current, level_next; | |
1771 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1772 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1773 | acpi_video_device_lcd_set_level(device, level_next); | |
1774 | } | |
1775 | ||
1776 | static int | |
4be44fcd LB |
1777 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1778 | struct acpi_device *device) | |
1da177e4 | 1779 | { |
4be44fcd | 1780 | int status = 0; |
ff102ea9 | 1781 | struct acpi_device *dev; |
1da177e4 LT |
1782 | |
1783 | acpi_video_device_enumerate(video); | |
1784 | ||
ff102ea9 | 1785 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
1786 | |
1787 | status = acpi_video_bus_get_one_device(dev, video); | |
1788 | if (ACPI_FAILURE(status)) { | |
a6fc6720 | 1789 | ACPI_EXCEPTION((AE_INFO, status, "Cant attach device")); |
1da177e4 LT |
1790 | continue; |
1791 | } | |
1da177e4 | 1792 | } |
d550d98d | 1793 | return status; |
1da177e4 LT |
1794 | } |
1795 | ||
4be44fcd | 1796 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1797 | { |
031ec77b | 1798 | acpi_status status; |
1da177e4 LT |
1799 | struct acpi_video_bus *video; |
1800 | ||
1da177e4 LT |
1801 | |
1802 | if (!device || !device->video) | |
d550d98d | 1803 | return -ENOENT; |
1da177e4 LT |
1804 | |
1805 | video = device->video; | |
1806 | ||
1da177e4 LT |
1807 | acpi_video_device_remove_fs(device->dev); |
1808 | ||
90130268 | 1809 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1810 | ACPI_DEVICE_NOTIFY, |
1811 | acpi_video_device_notify); | |
599a52d1 | 1812 | backlight_device_unregister(device->backlight); |
702ed512 ZR |
1813 | if (device->cdev) { |
1814 | sysfs_remove_link(&device->dev->dev.kobj, | |
1815 | "thermal_cooling"); | |
1816 | sysfs_remove_link(&device->cdev->device.kobj, | |
1817 | "device"); | |
1818 | thermal_cooling_device_unregister(device->cdev); | |
1819 | device->cdev = NULL; | |
1820 | } | |
23b0f015 | 1821 | video_output_unregister(device->output_dev); |
ff102ea9 | 1822 | |
d550d98d | 1823 | return 0; |
1da177e4 LT |
1824 | } |
1825 | ||
4be44fcd | 1826 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1827 | { |
4be44fcd | 1828 | int status; |
ff102ea9 | 1829 | struct acpi_video_device *dev, *next; |
1da177e4 | 1830 | |
bbac81f5 | 1831 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1832 | |
ff102ea9 | 1833 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 1834 | |
ff102ea9 | 1835 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
1836 | if (ACPI_FAILURE(status)) |
1837 | printk(KERN_WARNING PREFIX | |
1838 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1839 | |
ff102ea9 DT |
1840 | if (dev->brightness) { |
1841 | kfree(dev->brightness->levels); | |
1842 | kfree(dev->brightness); | |
1843 | } | |
1844 | list_del(&dev->entry); | |
1845 | kfree(dev); | |
1da177e4 LT |
1846 | } |
1847 | ||
bbac81f5 | 1848 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1849 | |
d550d98d | 1850 | return 0; |
1da177e4 LT |
1851 | } |
1852 | ||
1853 | /* acpi_video interface */ | |
1854 | ||
4be44fcd | 1855 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 1856 | { |
a21101c4 | 1857 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
1858 | } |
1859 | ||
4be44fcd | 1860 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1861 | { |
1862 | return acpi_video_bus_DOS(video, 0, 1); | |
1863 | } | |
1864 | ||
4be44fcd | 1865 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1866 | { |
50dd0969 | 1867 | struct acpi_video_bus *video = data; |
4be44fcd | 1868 | struct acpi_device *device = NULL; |
e9dab196 LY |
1869 | struct input_dev *input; |
1870 | int keycode; | |
1871 | ||
1da177e4 | 1872 | if (!video) |
d550d98d | 1873 | return; |
1da177e4 | 1874 | |
e6afa0de | 1875 | device = video->device; |
e9dab196 | 1876 | input = video->input; |
1da177e4 LT |
1877 | |
1878 | switch (event) { | |
98fb8fe1 | 1879 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 1880 | * most likely via hotkey. */ |
14e04fb3 | 1881 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1882 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1883 | break; |
1884 | ||
98fb8fe1 | 1885 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1886 | * connector. */ |
1887 | acpi_video_device_enumerate(video); | |
1888 | acpi_video_device_rebind(video); | |
14e04fb3 | 1889 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1890 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1891 | break; |
1892 | ||
4be44fcd | 1893 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
25c87f7f | 1894 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1895 | keycode = KEY_SWITCHVIDEOMODE; |
1896 | break; | |
4be44fcd | 1897 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
25c87f7f | 1898 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1899 | keycode = KEY_VIDEO_NEXT; |
1900 | break; | |
4be44fcd | 1901 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
14e04fb3 | 1902 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1903 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
1904 | break; |
1905 | ||
1906 | default: | |
e9dab196 | 1907 | keycode = KEY_UNKNOWN; |
1da177e4 | 1908 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1909 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1910 | break; |
1911 | } | |
1912 | ||
7761f638 | 1913 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
1914 | input_report_key(input, keycode, 1); |
1915 | input_sync(input); | |
1916 | input_report_key(input, keycode, 0); | |
1917 | input_sync(input); | |
1918 | ||
d550d98d | 1919 | return; |
1da177e4 LT |
1920 | } |
1921 | ||
4be44fcd | 1922 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1923 | { |
50dd0969 | 1924 | struct acpi_video_device *video_device = data; |
4be44fcd | 1925 | struct acpi_device *device = NULL; |
e9dab196 LY |
1926 | struct acpi_video_bus *bus; |
1927 | struct input_dev *input; | |
1928 | int keycode; | |
1da177e4 | 1929 | |
1da177e4 | 1930 | if (!video_device) |
d550d98d | 1931 | return; |
1da177e4 | 1932 | |
e6afa0de | 1933 | device = video_device->dev; |
e9dab196 LY |
1934 | bus = video_device->video; |
1935 | input = bus->input; | |
1da177e4 LT |
1936 | |
1937 | switch (event) { | |
4be44fcd | 1938 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
8a681a4d ZR |
1939 | if (brightness_switch_enabled) |
1940 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1941 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1942 | keycode = KEY_BRIGHTNESS_CYCLE; |
1943 | break; | |
4be44fcd | 1944 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
8a681a4d ZR |
1945 | if (brightness_switch_enabled) |
1946 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1947 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1948 | keycode = KEY_BRIGHTNESSUP; |
1949 | break; | |
4be44fcd | 1950 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
8a681a4d ZR |
1951 | if (brightness_switch_enabled) |
1952 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1953 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1954 | keycode = KEY_BRIGHTNESSDOWN; |
1955 | break; | |
4be44fcd | 1956 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
8a681a4d ZR |
1957 | if (brightness_switch_enabled) |
1958 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1959 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1960 | keycode = KEY_BRIGHTNESS_ZERO; |
1961 | break; | |
4be44fcd | 1962 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
8a681a4d ZR |
1963 | if (brightness_switch_enabled) |
1964 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1965 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1966 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
1967 | break; |
1968 | default: | |
e9dab196 | 1969 | keycode = KEY_UNKNOWN; |
1da177e4 | 1970 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1971 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1972 | break; |
1973 | } | |
e9dab196 | 1974 | |
7761f638 | 1975 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
1976 | input_report_key(input, keycode, 1); |
1977 | input_sync(input); | |
1978 | input_report_key(input, keycode, 0); | |
1979 | input_sync(input); | |
1980 | ||
d550d98d | 1981 | return; |
1da177e4 LT |
1982 | } |
1983 | ||
e6d9da1d | 1984 | static int instance; |
863c1490 MG |
1985 | static int acpi_video_resume(struct acpi_device *device) |
1986 | { | |
1987 | struct acpi_video_bus *video; | |
1988 | struct acpi_video_device *video_device; | |
1989 | int i; | |
1990 | ||
1991 | if (!device || !acpi_driver_data(device)) | |
1992 | return -EINVAL; | |
1993 | ||
1994 | video = acpi_driver_data(device); | |
1995 | ||
1996 | for (i = 0; i < video->attached_count; i++) { | |
1997 | video_device = video->attached_array[i].bind_info; | |
1998 | if (video_device && video_device->backlight) | |
1999 | acpi_video_set_brightness(video_device->backlight); | |
2000 | } | |
2001 | return AE_OK; | |
2002 | } | |
2003 | ||
4be44fcd | 2004 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 2005 | { |
f51e8391 DT |
2006 | acpi_status status; |
2007 | struct acpi_video_bus *video; | |
e9dab196 | 2008 | struct input_dev *input; |
f51e8391 | 2009 | int error; |
1da177e4 | 2010 | |
36bcbec7 | 2011 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 2012 | if (!video) |
d550d98d | 2013 | return -ENOMEM; |
1da177e4 | 2014 | |
e6d9da1d ZR |
2015 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
2016 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
2017 | if (instance) | |
2018 | device->pnp.bus_id[3] = '0' + instance; | |
2019 | instance ++; | |
2020 | } | |
2021 | ||
e6afa0de | 2022 | video->device = device; |
1da177e4 LT |
2023 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
2024 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
2025 | acpi_driver_data(device) = video; | |
2026 | ||
2027 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
2028 | error = acpi_video_bus_check(video); |
2029 | if (error) | |
2030 | goto err_free_video; | |
1da177e4 | 2031 | |
f51e8391 DT |
2032 | error = acpi_video_bus_add_fs(device); |
2033 | if (error) | |
2034 | goto err_free_video; | |
1da177e4 | 2035 | |
bbac81f5 | 2036 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
2037 | INIT_LIST_HEAD(&video->video_device_list); |
2038 | ||
2039 | acpi_video_bus_get_devices(video, device); | |
2040 | acpi_video_bus_start_devices(video); | |
2041 | ||
90130268 | 2042 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
2043 | ACPI_DEVICE_NOTIFY, |
2044 | acpi_video_bus_notify, video); | |
1da177e4 LT |
2045 | if (ACPI_FAILURE(status)) { |
2046 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 2047 | "Error installing notify handler\n")); |
f51e8391 DT |
2048 | error = -ENODEV; |
2049 | goto err_stop_video; | |
1da177e4 LT |
2050 | } |
2051 | ||
e9dab196 | 2052 | video->input = input = input_allocate_device(); |
f51e8391 DT |
2053 | if (!input) { |
2054 | error = -ENOMEM; | |
2055 | goto err_uninstall_notify; | |
2056 | } | |
e9dab196 LY |
2057 | |
2058 | snprintf(video->phys, sizeof(video->phys), | |
2059 | "%s/video/input0", acpi_device_hid(video->device)); | |
2060 | ||
2061 | input->name = acpi_device_name(video->device); | |
2062 | input->phys = video->phys; | |
2063 | input->id.bustype = BUS_HOST; | |
2064 | input->id.product = 0x06; | |
91c05c66 | 2065 | input->dev.parent = &device->dev; |
e9dab196 LY |
2066 | input->evbit[0] = BIT(EV_KEY); |
2067 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
2068 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
2069 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
2070 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
2071 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
2072 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
2073 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
2074 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
2075 | set_bit(KEY_UNKNOWN, input->keybit); | |
e9dab196 | 2076 | |
f51e8391 DT |
2077 | error = input_register_device(input); |
2078 | if (error) | |
2079 | goto err_free_input_dev; | |
e9dab196 | 2080 | |
1da177e4 | 2081 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
2082 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
2083 | video->flags.multihead ? "yes" : "no", | |
2084 | video->flags.rom ? "yes" : "no", | |
2085 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 2086 | |
f51e8391 DT |
2087 | return 0; |
2088 | ||
2089 | err_free_input_dev: | |
2090 | input_free_device(input); | |
2091 | err_uninstall_notify: | |
2092 | acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, | |
2093 | acpi_video_bus_notify); | |
2094 | err_stop_video: | |
2095 | acpi_video_bus_stop_devices(video); | |
2096 | acpi_video_bus_put_devices(video); | |
2097 | kfree(video->attached_array); | |
2098 | acpi_video_bus_remove_fs(device); | |
2099 | err_free_video: | |
2100 | kfree(video); | |
2101 | acpi_driver_data(device) = NULL; | |
1da177e4 | 2102 | |
f51e8391 | 2103 | return error; |
1da177e4 LT |
2104 | } |
2105 | ||
4be44fcd | 2106 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 2107 | { |
4be44fcd LB |
2108 | acpi_status status = 0; |
2109 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 2110 | |
1da177e4 LT |
2111 | |
2112 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 2113 | return -EINVAL; |
1da177e4 | 2114 | |
50dd0969 | 2115 | video = acpi_driver_data(device); |
1da177e4 LT |
2116 | |
2117 | acpi_video_bus_stop_devices(video); | |
2118 | ||
90130268 | 2119 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
2120 | ACPI_DEVICE_NOTIFY, |
2121 | acpi_video_bus_notify); | |
1da177e4 LT |
2122 | |
2123 | acpi_video_bus_put_devices(video); | |
2124 | acpi_video_bus_remove_fs(device); | |
2125 | ||
e9dab196 | 2126 | input_unregister_device(video->input); |
6044ec88 | 2127 | kfree(video->attached_array); |
1da177e4 LT |
2128 | kfree(video); |
2129 | ||
d550d98d | 2130 | return 0; |
1da177e4 LT |
2131 | } |
2132 | ||
4be44fcd | 2133 | static int __init acpi_video_init(void) |
1da177e4 | 2134 | { |
4be44fcd | 2135 | int result = 0; |
1da177e4 | 2136 | |
1da177e4 LT |
2137 | |
2138 | /* | |
4be44fcd LB |
2139 | acpi_dbg_level = 0xFFFFFFFF; |
2140 | acpi_dbg_layer = 0x08000000; | |
2141 | */ | |
1da177e4 LT |
2142 | |
2143 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2144 | if (!acpi_video_dir) | |
d550d98d | 2145 | return -ENODEV; |
1da177e4 LT |
2146 | acpi_video_dir->owner = THIS_MODULE; |
2147 | ||
2148 | result = acpi_bus_register_driver(&acpi_video_bus); | |
2149 | if (result < 0) { | |
2150 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 2151 | return -ENODEV; |
1da177e4 LT |
2152 | } |
2153 | ||
d550d98d | 2154 | return 0; |
1da177e4 LT |
2155 | } |
2156 | ||
4be44fcd | 2157 | static void __exit acpi_video_exit(void) |
1da177e4 | 2158 | { |
1da177e4 LT |
2159 | |
2160 | acpi_bus_unregister_driver(&acpi_video_bus); | |
2161 | ||
2162 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2163 | ||
d550d98d | 2164 | return; |
1da177e4 LT |
2165 | } |
2166 | ||
2167 | module_init(acpi_video_init); | |
2168 | module_exit(acpi_video_exit); |