Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * video.c - ACPI Video Driver ($Revision:$) | |
3 | * | |
4 | * Copyright (C) 2004 Luming Yu <luming.yu@intel.com> | |
5 | * Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org> | |
f4715189 | 6 | * Copyright (C) 2006 Thomas Tuttle <linux-kernel@ttuttle.net> |
1da177e4 LT |
7 | * |
8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or (at | |
13 | * your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
23 | * | |
24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
25 | */ | |
26 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/types.h> | |
31 | #include <linux/list.h> | |
bbac81f5 | 32 | #include <linux/mutex.h> |
1da177e4 LT |
33 | #include <linux/proc_fs.h> |
34 | #include <linux/seq_file.h> | |
e9dab196 | 35 | #include <linux/input.h> |
2f3d000a | 36 | #include <linux/backlight.h> |
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 | |
2f3d000a | 60 | #define MAX_NAME_LEN 20 |
1da177e4 | 61 | |
82cae999 RZ |
62 | #define ACPI_VIDEO_DISPLAY_CRT 1 |
63 | #define ACPI_VIDEO_DISPLAY_TV 2 | |
64 | #define ACPI_VIDEO_DISPLAY_DVI 3 | |
65 | #define ACPI_VIDEO_DISPLAY_LCD 4 | |
66 | ||
1da177e4 | 67 | #define _COMPONENT ACPI_VIDEO_COMPONENT |
f52fd66d | 68 | ACPI_MODULE_NAME("video"); |
1da177e4 | 69 | |
f52fd66d | 70 | MODULE_AUTHOR("Bruno Ducrot"); |
7cda93e0 | 71 | MODULE_DESCRIPTION("ACPI Video Driver"); |
1da177e4 LT |
72 | MODULE_LICENSE("GPL"); |
73 | ||
8a681a4d ZR |
74 | static int brightness_switch_enabled = 1; |
75 | module_param(brightness_switch_enabled, bool, 0644); | |
76 | ||
4be44fcd LB |
77 | static int acpi_video_bus_add(struct acpi_device *device); |
78 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
863c1490 | 79 | static int acpi_video_resume(struct acpi_device *device); |
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, | |
863c1490 | 94 | .resume = acpi_video_resume, |
4be44fcd | 95 | }, |
1da177e4 LT |
96 | }; |
97 | ||
98 | struct acpi_video_bus_flags { | |
4be44fcd LB |
99 | u8 multihead:1; /* can switch video heads */ |
100 | u8 rom:1; /* can retrieve a video rom */ | |
101 | u8 post:1; /* can configure the head to */ | |
102 | u8 reserved:5; | |
1da177e4 LT |
103 | }; |
104 | ||
105 | struct acpi_video_bus_cap { | |
4be44fcd LB |
106 | u8 _DOS:1; /*Enable/Disable output switching */ |
107 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
108 | u8 _ROM:1; /*Get ROM Data */ | |
109 | u8 _GPD:1; /*Get POST Device */ | |
110 | u8 _SPD:1; /*Set POST Device */ | |
111 | u8 _VPO:1; /*Video POST Options */ | |
112 | u8 reserved:2; | |
1da177e4 LT |
113 | }; |
114 | ||
4be44fcd LB |
115 | struct acpi_video_device_attrib { |
116 | u32 display_index:4; /* A zero-based instance of the Display */ | |
98fb8fe1 | 117 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
4be44fcd | 118 | u32 display_type:4; /*Describe the specific type in use */ |
98fb8fe1 | 119 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
4be44fcd LB |
120 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
121 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
122 | the VGA device. */ | |
123 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
124 | u32 reserved:10; /*Must be 0 */ | |
125 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
126 | }; |
127 | ||
128 | struct acpi_video_enumerated_device { | |
129 | union { | |
130 | u32 int_val; | |
4be44fcd | 131 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
132 | } value; |
133 | struct acpi_video_device *bind_info; | |
134 | }; | |
135 | ||
136 | struct acpi_video_bus { | |
e6afa0de | 137 | struct acpi_device *device; |
4be44fcd | 138 | u8 dos_setting; |
1da177e4 | 139 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
140 | u8 attached_count; |
141 | struct acpi_video_bus_cap cap; | |
1da177e4 | 142 | struct acpi_video_bus_flags flags; |
4be44fcd | 143 | struct list_head video_device_list; |
bbac81f5 | 144 | struct mutex device_list_lock; /* protects video_device_list */ |
4be44fcd | 145 | struct proc_dir_entry *dir; |
e9dab196 LY |
146 | struct input_dev *input; |
147 | char phys[32]; /* for input device */ | |
1da177e4 LT |
148 | }; |
149 | ||
150 | struct acpi_video_device_flags { | |
4be44fcd LB |
151 | u8 crt:1; |
152 | u8 lcd:1; | |
153 | u8 tvout:1; | |
82cae999 | 154 | u8 dvi:1; |
4be44fcd LB |
155 | u8 bios:1; |
156 | u8 unknown:1; | |
82cae999 | 157 | u8 reserved:2; |
1da177e4 LT |
158 | }; |
159 | ||
160 | struct acpi_video_device_cap { | |
4be44fcd LB |
161 | u8 _ADR:1; /*Return the unique ID */ |
162 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
163 | u8 _BCM:1; /*Set the brightness level */ | |
2f3d000a | 164 | u8 _BQC:1; /* Get current brightness level */ |
4be44fcd LB |
165 | u8 _DDC:1; /*Return the EDID for this device */ |
166 | u8 _DCS:1; /*Return status of output device */ | |
167 | u8 _DGS:1; /*Query graphics state */ | |
168 | u8 _DSS:1; /*Device state set */ | |
1da177e4 LT |
169 | }; |
170 | ||
171 | struct acpi_video_device_brightness { | |
4be44fcd LB |
172 | int curr; |
173 | int count; | |
174 | int *levels; | |
1da177e4 LT |
175 | }; |
176 | ||
177 | struct acpi_video_device { | |
4be44fcd LB |
178 | unsigned long device_id; |
179 | struct acpi_video_device_flags flags; | |
180 | struct acpi_video_device_cap cap; | |
181 | struct list_head entry; | |
182 | struct acpi_video_bus *video; | |
183 | struct acpi_device *dev; | |
1da177e4 | 184 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 185 | struct backlight_device *backlight; |
702ed512 | 186 | struct thermal_cooling_device *cdev; |
23b0f015 | 187 | struct output_device *output_dev; |
1da177e4 LT |
188 | }; |
189 | ||
1da177e4 LT |
190 | /* bus */ |
191 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
192 | static struct file_operations acpi_video_bus_info_fops = { | |
cf7acfab | 193 | .owner = THIS_MODULE, |
4be44fcd LB |
194 | .open = acpi_video_bus_info_open_fs, |
195 | .read = seq_read, | |
196 | .llseek = seq_lseek, | |
197 | .release = single_release, | |
1da177e4 LT |
198 | }; |
199 | ||
200 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
201 | static struct file_operations acpi_video_bus_ROM_fops = { | |
cf7acfab | 202 | .owner = THIS_MODULE, |
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 = { |
cf7acfab | 212 | .owner = THIS_MODULE, |
4be44fcd LB |
213 | .open = acpi_video_bus_POST_info_open_fs, |
214 | .read = seq_read, | |
215 | .llseek = seq_lseek, | |
216 | .release = single_release, | |
1da177e4 LT |
217 | }; |
218 | ||
219 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
220 | static struct file_operations acpi_video_bus_POST_fops = { | |
cf7acfab | 221 | .owner = THIS_MODULE, |
4be44fcd LB |
222 | .open = acpi_video_bus_POST_open_fs, |
223 | .read = seq_read, | |
224 | .llseek = seq_lseek, | |
225 | .release = single_release, | |
1da177e4 LT |
226 | }; |
227 | ||
1da177e4 LT |
228 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
229 | static struct file_operations acpi_video_bus_DOS_fops = { | |
cf7acfab | 230 | .owner = THIS_MODULE, |
4be44fcd LB |
231 | .open = acpi_video_bus_DOS_open_fs, |
232 | .read = seq_read, | |
233 | .llseek = seq_lseek, | |
234 | .release = single_release, | |
1da177e4 LT |
235 | }; |
236 | ||
237 | /* device */ | |
4be44fcd LB |
238 | static int acpi_video_device_info_open_fs(struct inode *inode, |
239 | struct file *file); | |
1da177e4 | 240 | static struct file_operations acpi_video_device_info_fops = { |
cf7acfab | 241 | .owner = THIS_MODULE, |
4be44fcd LB |
242 | .open = acpi_video_device_info_open_fs, |
243 | .read = seq_read, | |
244 | .llseek = seq_lseek, | |
245 | .release = single_release, | |
1da177e4 LT |
246 | }; |
247 | ||
4be44fcd LB |
248 | static int acpi_video_device_state_open_fs(struct inode *inode, |
249 | struct file *file); | |
1da177e4 | 250 | static struct file_operations acpi_video_device_state_fops = { |
cf7acfab | 251 | .owner = THIS_MODULE, |
4be44fcd LB |
252 | .open = acpi_video_device_state_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_brightness_open_fs(struct inode *inode, |
259 | struct file *file); | |
1da177e4 | 260 | static struct file_operations acpi_video_device_brightness_fops = { |
cf7acfab | 261 | .owner = THIS_MODULE, |
4be44fcd LB |
262 | .open = acpi_video_device_brightness_open_fs, |
263 | .read = seq_read, | |
264 | .llseek = seq_lseek, | |
265 | .release = single_release, | |
1da177e4 LT |
266 | }; |
267 | ||
4be44fcd LB |
268 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
269 | struct file *file); | |
1da177e4 | 270 | static struct file_operations acpi_video_device_EDID_fops = { |
cf7acfab | 271 | .owner = THIS_MODULE, |
4be44fcd LB |
272 | .open = acpi_video_device_EDID_open_fs, |
273 | .read = seq_read, | |
274 | .llseek = seq_lseek, | |
275 | .release = single_release, | |
1da177e4 LT |
276 | }; |
277 | ||
4be44fcd | 278 | static char device_decode[][30] = { |
1da177e4 LT |
279 | "motherboard VGA device", |
280 | "PCI VGA device", | |
281 | "AGP VGA device", | |
282 | "UNKNOWN", | |
283 | }; | |
284 | ||
4be44fcd LB |
285 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
286 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
287 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
288 | struct acpi_video_device *device); | |
1da177e4 | 289 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
2f3d000a YL |
290 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
291 | int level); | |
292 | static int acpi_video_device_lcd_get_level_current( | |
293 | struct acpi_video_device *device, | |
294 | unsigned long *level); | |
4be44fcd LB |
295 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
296 | u32 level_current, u32 event); | |
297 | static void acpi_video_switch_brightness(struct acpi_video_device *device, | |
298 | int event); | |
23b0f015 LY |
299 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
300 | unsigned long *state); | |
301 | static int acpi_video_output_get(struct output_device *od); | |
302 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 303 | |
2f3d000a YL |
304 | /*backlight device sysfs support*/ |
305 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
306 | { | |
307 | unsigned long cur_level; | |
38531e6f | 308 | int i; |
2f3d000a | 309 | struct acpi_video_device *vd = |
655bfd7a | 310 | (struct acpi_video_device *)bl_get_data(bd); |
2f3d000a | 311 | acpi_video_device_lcd_get_level_current(vd, &cur_level); |
38531e6f MG |
312 | for (i = 2; i < vd->brightness->count; i++) { |
313 | if (vd->brightness->levels[i] == cur_level) | |
314 | /* The first two entries are special - see page 575 | |
315 | of the ACPI spec 3.0 */ | |
316 | return i-2; | |
317 | } | |
318 | return 0; | |
2f3d000a YL |
319 | } |
320 | ||
321 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
322 | { | |
38531e6f | 323 | int request_level = bd->props.brightness+2; |
2f3d000a | 324 | struct acpi_video_device *vd = |
655bfd7a | 325 | (struct acpi_video_device *)bl_get_data(bd); |
38531e6f MG |
326 | acpi_video_device_lcd_set_level(vd, |
327 | vd->brightness->levels[request_level]); | |
2f3d000a YL |
328 | return 0; |
329 | } | |
330 | ||
599a52d1 RP |
331 | static struct backlight_ops acpi_backlight_ops = { |
332 | .get_brightness = acpi_video_get_brightness, | |
333 | .update_status = acpi_video_set_brightness, | |
334 | }; | |
335 | ||
23b0f015 LY |
336 | /*video output device sysfs support*/ |
337 | static int acpi_video_output_get(struct output_device *od) | |
338 | { | |
339 | unsigned long state; | |
340 | struct acpi_video_device *vd = | |
60043428 | 341 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
342 | acpi_video_device_get_state(vd, &state); |
343 | return (int)state; | |
344 | } | |
345 | ||
346 | static int acpi_video_output_set(struct output_device *od) | |
347 | { | |
348 | unsigned long state = od->request_state; | |
349 | struct acpi_video_device *vd= | |
60043428 | 350 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
351 | return acpi_video_device_set_state(vd, state); |
352 | } | |
353 | ||
354 | static struct output_properties acpi_output_properties = { | |
355 | .set_state = acpi_video_output_set, | |
356 | .get_status = acpi_video_output_get, | |
357 | }; | |
702ed512 ZR |
358 | |
359 | ||
360 | /* thermal cooling device callbacks */ | |
361 | static int video_get_max_state(struct thermal_cooling_device *cdev, char *buf) | |
362 | { | |
363 | struct acpi_device *device = cdev->devdata; | |
364 | struct acpi_video_device *video = acpi_driver_data(device); | |
365 | ||
366 | return sprintf(buf, "%d\n", video->brightness->count - 3); | |
367 | } | |
368 | ||
369 | static int video_get_cur_state(struct thermal_cooling_device *cdev, char *buf) | |
370 | { | |
371 | struct acpi_device *device = cdev->devdata; | |
372 | struct acpi_video_device *video = acpi_driver_data(device); | |
373 | unsigned long level; | |
374 | int state; | |
375 | ||
376 | acpi_video_device_lcd_get_level_current(video, &level); | |
377 | for (state = 2; state < video->brightness->count; state++) | |
378 | if (level == video->brightness->levels[state]) | |
379 | return sprintf(buf, "%d\n", | |
380 | video->brightness->count - state - 1); | |
381 | ||
382 | return -EINVAL; | |
383 | } | |
384 | ||
385 | static int | |
386 | video_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state) | |
387 | { | |
388 | struct acpi_device *device = cdev->devdata; | |
389 | struct acpi_video_device *video = acpi_driver_data(device); | |
390 | int level; | |
391 | ||
392 | if ( state >= video->brightness->count - 2) | |
393 | return -EINVAL; | |
394 | ||
395 | state = video->brightness->count - state; | |
396 | level = video->brightness->levels[state -1]; | |
397 | return acpi_video_device_lcd_set_level(video, level); | |
398 | } | |
399 | ||
400 | static struct thermal_cooling_device_ops video_cooling_ops = { | |
401 | .get_max_state = video_get_max_state, | |
402 | .get_cur_state = video_get_cur_state, | |
403 | .set_cur_state = video_set_cur_state, | |
404 | }; | |
405 | ||
1da177e4 LT |
406 | /* -------------------------------------------------------------------------- |
407 | Video Management | |
408 | -------------------------------------------------------------------------- */ | |
409 | ||
410 | /* device */ | |
411 | ||
412 | static int | |
4be44fcd | 413 | acpi_video_device_query(struct acpi_video_device *device, unsigned long *state) |
1da177e4 | 414 | { |
4be44fcd | 415 | int status; |
90130268 PM |
416 | |
417 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 418 | |
d550d98d | 419 | return status; |
1da177e4 LT |
420 | } |
421 | ||
422 | static int | |
4be44fcd LB |
423 | acpi_video_device_get_state(struct acpi_video_device *device, |
424 | unsigned long *state) | |
1da177e4 | 425 | { |
4be44fcd | 426 | int status; |
1da177e4 | 427 | |
90130268 | 428 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 429 | |
d550d98d | 430 | return status; |
1da177e4 LT |
431 | } |
432 | ||
433 | static int | |
4be44fcd | 434 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 435 | { |
4be44fcd LB |
436 | int status; |
437 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
438 | struct acpi_object_list args = { 1, &arg0 }; | |
824b558b | 439 | unsigned long ret; |
1da177e4 | 440 | |
1da177e4 LT |
441 | |
442 | arg0.integer.value = state; | |
90130268 | 443 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 444 | |
d550d98d | 445 | return status; |
1da177e4 LT |
446 | } |
447 | ||
448 | static int | |
4be44fcd LB |
449 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
450 | union acpi_object **levels) | |
1da177e4 | 451 | { |
4be44fcd LB |
452 | int status; |
453 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
454 | union acpi_object *obj; | |
1da177e4 | 455 | |
1da177e4 LT |
456 | |
457 | *levels = NULL; | |
458 | ||
90130268 | 459 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 460 | if (!ACPI_SUCCESS(status)) |
d550d98d | 461 | return status; |
4be44fcd | 462 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 463 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 464 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
465 | status = -EFAULT; |
466 | goto err; | |
467 | } | |
468 | ||
469 | *levels = obj; | |
470 | ||
d550d98d | 471 | return 0; |
1da177e4 | 472 | |
4be44fcd | 473 | err: |
6044ec88 | 474 | kfree(buffer.pointer); |
1da177e4 | 475 | |
d550d98d | 476 | return status; |
1da177e4 LT |
477 | } |
478 | ||
479 | static int | |
4be44fcd | 480 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 481 | { |
4500ca8e | 482 | int status = AE_OK; |
4be44fcd LB |
483 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
484 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 485 | |
1da177e4 LT |
486 | |
487 | arg0.integer.value = level; | |
1da177e4 | 488 | |
4500ca8e AS |
489 | if (device->cap._BCM) |
490 | status = acpi_evaluate_object(device->dev->handle, "_BCM", | |
491 | &args, NULL); | |
492 | device->brightness->curr = level; | |
d550d98d | 493 | return status; |
1da177e4 LT |
494 | } |
495 | ||
496 | static int | |
4be44fcd LB |
497 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
498 | unsigned long *level) | |
1da177e4 | 499 | { |
4500ca8e AS |
500 | if (device->cap._BQC) |
501 | return acpi_evaluate_integer(device->dev->handle, "_BQC", NULL, | |
502 | level); | |
503 | *level = device->brightness->curr; | |
504 | return AE_OK; | |
1da177e4 LT |
505 | } |
506 | ||
507 | static int | |
4be44fcd LB |
508 | acpi_video_device_EDID(struct acpi_video_device *device, |
509 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 510 | { |
4be44fcd LB |
511 | int status; |
512 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
513 | union acpi_object *obj; | |
514 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
515 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 516 | |
1da177e4 LT |
517 | |
518 | *edid = NULL; | |
519 | ||
520 | if (!device) | |
d550d98d | 521 | return -ENODEV; |
1da177e4 LT |
522 | if (length == 128) |
523 | arg0.integer.value = 1; | |
524 | else if (length == 256) | |
525 | arg0.integer.value = 2; | |
526 | else | |
d550d98d | 527 | return -EINVAL; |
1da177e4 | 528 | |
90130268 | 529 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 530 | if (ACPI_FAILURE(status)) |
d550d98d | 531 | return -ENODEV; |
1da177e4 | 532 | |
50dd0969 | 533 | obj = buffer.pointer; |
1da177e4 LT |
534 | |
535 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
536 | *edid = obj; | |
537 | else { | |
6468463a | 538 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
539 | status = -EFAULT; |
540 | kfree(obj); | |
541 | } | |
542 | ||
d550d98d | 543 | return status; |
1da177e4 LT |
544 | } |
545 | ||
1da177e4 LT |
546 | /* bus */ |
547 | ||
548 | static int | |
4be44fcd | 549 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 550 | { |
4be44fcd LB |
551 | int status; |
552 | unsigned long tmp; | |
553 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
554 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 555 | |
1da177e4 LT |
556 | |
557 | arg0.integer.value = option; | |
558 | ||
90130268 | 559 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 560 | if (ACPI_SUCCESS(status)) |
4be44fcd | 561 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 562 | |
d550d98d | 563 | return status; |
1da177e4 LT |
564 | } |
565 | ||
566 | static int | |
4be44fcd | 567 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) |
1da177e4 LT |
568 | { |
569 | int status; | |
570 | ||
90130268 | 571 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 572 | |
d550d98d | 573 | return status; |
1da177e4 LT |
574 | } |
575 | ||
576 | static int | |
4be44fcd LB |
577 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
578 | unsigned long *options) | |
1da177e4 | 579 | { |
4be44fcd | 580 | int status; |
1da177e4 | 581 | |
90130268 | 582 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
583 | *options &= 3; |
584 | ||
d550d98d | 585 | return status; |
1da177e4 LT |
586 | } |
587 | ||
588 | /* | |
589 | * Arg: | |
590 | * video : video bus device pointer | |
591 | * bios_flag : | |
592 | * 0. The system BIOS should NOT automatically switch(toggle) | |
593 | * the active display output. | |
594 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 595 | * active display output. No switch event. |
1da177e4 LT |
596 | * 2. The _DGS value should be locked. |
597 | * 3. The system BIOS should not automatically switch (toggle) the | |
598 | * active display output, but instead generate the display switch | |
599 | * event notify code. | |
600 | * lcd_flag : | |
601 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 602 | * of the LCD when the power changes from AC to DC |
1da177e4 | 603 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 604 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
605 | * Return Value: |
606 | * -1 wrong arg. | |
607 | */ | |
608 | ||
609 | static int | |
4be44fcd | 610 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 611 | { |
4be44fcd LB |
612 | acpi_integer status = 0; |
613 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
614 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 615 | |
1da177e4 | 616 | |
4be44fcd | 617 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
618 | status = -1; |
619 | goto Failed; | |
620 | } | |
621 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
622 | video->dos_setting = arg0.integer.value; | |
90130268 | 623 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 624 | |
4be44fcd | 625 | Failed: |
d550d98d | 626 | return status; |
1da177e4 LT |
627 | } |
628 | ||
629 | /* | |
630 | * Arg: | |
631 | * device : video output device (LCD, CRT, ..) | |
632 | * | |
633 | * Return Value: | |
469778c1 JJ |
634 | * Maximum brightness level |
635 | * | |
636 | * Allocate and initialize device->brightness. | |
637 | */ | |
638 | ||
639 | static int | |
640 | acpi_video_init_brightness(struct acpi_video_device *device) | |
641 | { | |
642 | union acpi_object *obj = NULL; | |
643 | int i, max_level = 0, count = 0; | |
644 | union acpi_object *o; | |
645 | struct acpi_video_device_brightness *br = NULL; | |
646 | ||
647 | if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { | |
648 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available " | |
649 | "LCD brightness level\n")); | |
650 | goto out; | |
651 | } | |
652 | ||
653 | if (obj->package.count < 2) | |
654 | goto out; | |
655 | ||
656 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
657 | if (!br) { | |
658 | printk(KERN_ERR "can't allocate memory\n"); | |
659 | goto out; | |
660 | } | |
661 | ||
662 | br->levels = kmalloc(obj->package.count * sizeof *(br->levels), | |
663 | GFP_KERNEL); | |
664 | if (!br->levels) | |
665 | goto out_free; | |
666 | ||
667 | for (i = 0; i < obj->package.count; i++) { | |
668 | o = (union acpi_object *)&obj->package.elements[i]; | |
669 | if (o->type != ACPI_TYPE_INTEGER) { | |
670 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
671 | continue; | |
672 | } | |
673 | br->levels[count] = (u32) o->integer.value; | |
674 | ||
675 | if (br->levels[count] > max_level) | |
676 | max_level = br->levels[count]; | |
677 | count++; | |
678 | } | |
679 | ||
680 | if (count < 2) | |
681 | goto out_free_levels; | |
682 | ||
683 | br->count = count; | |
684 | device->brightness = br; | |
685 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "found %d brightness levels\n", count)); | |
686 | kfree(obj); | |
687 | return max_level; | |
688 | ||
689 | out_free_levels: | |
690 | kfree(br->levels); | |
691 | out_free: | |
692 | kfree(br); | |
693 | out: | |
694 | device->brightness = NULL; | |
695 | kfree(obj); | |
696 | return 0; | |
697 | } | |
698 | ||
699 | /* | |
700 | * Arg: | |
701 | * device : video output device (LCD, CRT, ..) | |
702 | * | |
703 | * Return Value: | |
1da177e4 LT |
704 | * None |
705 | * | |
98fb8fe1 | 706 | * Find out all required AML methods defined under the output |
1da177e4 LT |
707 | * device. |
708 | */ | |
709 | ||
4be44fcd | 710 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 711 | { |
1da177e4 | 712 | acpi_handle h_dummy1; |
2f3d000a | 713 | u32 max_level = 0; |
1da177e4 | 714 | |
1da177e4 | 715 | |
98934def | 716 | memset(&device->cap, 0, sizeof(device->cap)); |
1da177e4 | 717 | |
90130268 | 718 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
719 | device->cap._ADR = 1; |
720 | } | |
90130268 | 721 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 722 | device->cap._BCL = 1; |
1da177e4 | 723 | } |
90130268 | 724 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 725 | device->cap._BCM = 1; |
1da177e4 | 726 | } |
2f3d000a YL |
727 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
728 | device->cap._BQC = 1; | |
90130268 | 729 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 730 | device->cap._DDC = 1; |
1da177e4 | 731 | } |
90130268 | 732 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
733 | device->cap._DCS = 1; |
734 | } | |
90130268 | 735 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
736 | device->cap._DGS = 1; |
737 | } | |
90130268 | 738 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
739 | device->cap._DSS = 1; |
740 | } | |
741 | ||
469778c1 | 742 | max_level = acpi_video_init_brightness(device); |
1da177e4 | 743 | |
c2c78905 | 744 | if (device->cap._BCL && device->cap._BCM && max_level > 0) { |
702ed512 | 745 | int result; |
2f3d000a YL |
746 | static int count = 0; |
747 | char *name; | |
2f3d000a YL |
748 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
749 | if (!name) | |
750 | return; | |
751 | ||
2f3d000a | 752 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 753 | device->backlight = backlight_device_register(name, |
599a52d1 | 754 | NULL, device, &acpi_backlight_ops); |
38531e6f | 755 | device->backlight->props.max_brightness = device->brightness->count-3; |
c2c78905 ZY |
756 | /* |
757 | * If there exists the _BQC object, the _BQC object will be | |
758 | * called to get the current backlight brightness. Otherwise | |
759 | * the brightness will be set to the maximum. | |
760 | */ | |
761 | if (device->cap._BQC) | |
762 | device->backlight->props.brightness = | |
763 | acpi_video_get_brightness(device->backlight); | |
764 | else | |
765 | device->backlight->props.brightness = | |
766 | device->backlight->props.max_brightness; | |
599a52d1 | 767 | backlight_update_status(device->backlight); |
2f3d000a | 768 | kfree(name); |
702ed512 ZR |
769 | |
770 | device->cdev = thermal_cooling_device_register("LCD", | |
771 | device->dev, &video_cooling_ops); | |
43ff39f2 TS |
772 | if (IS_ERR(device->cdev)) |
773 | return; | |
774 | ||
fc3a8828 GKH |
775 | dev_info(&device->dev->dev, "registered as cooling_device%d\n", |
776 | device->cdev->id); | |
9030062f JL |
777 | result = sysfs_create_link(&device->dev->dev.kobj, |
778 | &device->cdev->device.kobj, | |
779 | "thermal_cooling"); | |
780 | if (result) | |
781 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
782 | result = sysfs_create_link(&device->cdev->device.kobj, | |
783 | &device->dev->dev.kobj, "device"); | |
784 | if (result) | |
785 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
786 | ||
2f3d000a | 787 | } |
23b0f015 LY |
788 | if (device->cap._DCS && device->cap._DSS){ |
789 | static int count = 0; | |
790 | char *name; | |
791 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
792 | if (!name) | |
793 | return; | |
794 | sprintf(name, "acpi_video%d", count++); | |
795 | device->output_dev = video_output_register(name, | |
796 | NULL, device, &acpi_output_properties); | |
797 | kfree(name); | |
798 | } | |
d550d98d | 799 | return; |
1da177e4 LT |
800 | } |
801 | ||
802 | /* | |
803 | * Arg: | |
804 | * device : video output device (VGA) | |
805 | * | |
806 | * Return Value: | |
807 | * None | |
808 | * | |
98fb8fe1 | 809 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
810 | */ |
811 | ||
4be44fcd | 812 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 813 | { |
4be44fcd | 814 | acpi_handle h_dummy1; |
1da177e4 | 815 | |
98934def | 816 | memset(&video->cap, 0, sizeof(video->cap)); |
90130268 | 817 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
818 | video->cap._DOS = 1; |
819 | } | |
90130268 | 820 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
821 | video->cap._DOD = 1; |
822 | } | |
90130268 | 823 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
824 | video->cap._ROM = 1; |
825 | } | |
90130268 | 826 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
827 | video->cap._GPD = 1; |
828 | } | |
90130268 | 829 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
830 | video->cap._SPD = 1; |
831 | } | |
90130268 | 832 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
833 | video->cap._VPO = 1; |
834 | } | |
835 | } | |
836 | ||
837 | /* | |
838 | * Check whether the video bus device has required AML method to | |
839 | * support the desired features | |
840 | */ | |
841 | ||
4be44fcd | 842 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 843 | { |
4be44fcd | 844 | acpi_status status = -ENOENT; |
f0d6752c | 845 | |
1da177e4 LT |
846 | |
847 | if (!video) | |
d550d98d | 848 | return -EINVAL; |
1da177e4 LT |
849 | |
850 | /* Since there is no HID, CID and so on for VGA driver, we have | |
851 | * to check well known required nodes. | |
852 | */ | |
853 | ||
98fb8fe1 | 854 | /* Does this device support video switching? */ |
4be44fcd | 855 | if (video->cap._DOS) { |
1da177e4 LT |
856 | video->flags.multihead = 1; |
857 | status = 0; | |
858 | } | |
859 | ||
98fb8fe1 | 860 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 861 | if (video->cap._ROM) { |
1da177e4 LT |
862 | video->flags.rom = 1; |
863 | status = 0; | |
864 | } | |
865 | ||
98fb8fe1 | 866 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 867 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
868 | video->flags.post = 1; |
869 | status = 0; | |
870 | } | |
871 | ||
d550d98d | 872 | return status; |
1da177e4 LT |
873 | } |
874 | ||
875 | /* -------------------------------------------------------------------------- | |
876 | FS Interface (/proc) | |
877 | -------------------------------------------------------------------------- */ | |
878 | ||
4be44fcd | 879 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
880 | |
881 | /* video devices */ | |
882 | ||
4be44fcd | 883 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 884 | { |
50dd0969 | 885 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 886 | |
1da177e4 LT |
887 | |
888 | if (!dev) | |
889 | goto end; | |
890 | ||
891 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
892 | seq_printf(seq, "type: "); | |
893 | if (dev->flags.crt) | |
894 | seq_printf(seq, "CRT\n"); | |
895 | else if (dev->flags.lcd) | |
896 | seq_printf(seq, "LCD\n"); | |
897 | else if (dev->flags.tvout) | |
898 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
899 | else if (dev->flags.dvi) |
900 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
901 | else |
902 | seq_printf(seq, "UNKNOWN\n"); | |
903 | ||
4be44fcd | 904 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 905 | |
4be44fcd | 906 | end: |
d550d98d | 907 | return 0; |
1da177e4 LT |
908 | } |
909 | ||
910 | static int | |
4be44fcd | 911 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
912 | { |
913 | return single_open(file, acpi_video_device_info_seq_show, | |
914 | PDE(inode)->data); | |
915 | } | |
916 | ||
4be44fcd | 917 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 918 | { |
4be44fcd | 919 | int status; |
50dd0969 | 920 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 921 | unsigned long state; |
1da177e4 | 922 | |
1da177e4 LT |
923 | |
924 | if (!dev) | |
925 | goto end; | |
926 | ||
927 | status = acpi_video_device_get_state(dev, &state); | |
928 | seq_printf(seq, "state: "); | |
929 | if (ACPI_SUCCESS(status)) | |
930 | seq_printf(seq, "0x%02lx\n", state); | |
931 | else | |
932 | seq_printf(seq, "<not supported>\n"); | |
933 | ||
934 | status = acpi_video_device_query(dev, &state); | |
935 | seq_printf(seq, "query: "); | |
936 | if (ACPI_SUCCESS(status)) | |
937 | seq_printf(seq, "0x%02lx\n", state); | |
938 | else | |
939 | seq_printf(seq, "<not supported>\n"); | |
940 | ||
4be44fcd | 941 | end: |
d550d98d | 942 | return 0; |
1da177e4 LT |
943 | } |
944 | ||
945 | static int | |
4be44fcd | 946 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
947 | { |
948 | return single_open(file, acpi_video_device_state_seq_show, | |
949 | PDE(inode)->data); | |
950 | } | |
951 | ||
952 | static ssize_t | |
4be44fcd LB |
953 | acpi_video_device_write_state(struct file *file, |
954 | const char __user * buffer, | |
955 | size_t count, loff_t * data) | |
1da177e4 | 956 | { |
4be44fcd | 957 | int status; |
50dd0969 JE |
958 | struct seq_file *m = file->private_data; |
959 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
960 | char str[12] = { 0 }; |
961 | u32 state = 0; | |
1da177e4 | 962 | |
1da177e4 LT |
963 | |
964 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 965 | return -EINVAL; |
1da177e4 LT |
966 | |
967 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 968 | return -EFAULT; |
1da177e4 LT |
969 | |
970 | str[count] = 0; | |
971 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 972 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
973 | |
974 | status = acpi_video_device_set_state(dev, state); | |
975 | ||
976 | if (status) | |
d550d98d | 977 | return -EFAULT; |
1da177e4 | 978 | |
d550d98d | 979 | return count; |
1da177e4 LT |
980 | } |
981 | ||
982 | static int | |
4be44fcd | 983 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 984 | { |
50dd0969 | 985 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 986 | int i; |
1da177e4 | 987 | |
1da177e4 LT |
988 | |
989 | if (!dev || !dev->brightness) { | |
990 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 991 | return 0; |
1da177e4 LT |
992 | } |
993 | ||
994 | seq_printf(seq, "levels: "); | |
995 | for (i = 0; i < dev->brightness->count; i++) | |
996 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
997 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
998 | ||
d550d98d | 999 | return 0; |
1da177e4 LT |
1000 | } |
1001 | ||
1002 | static int | |
4be44fcd | 1003 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1004 | { |
1005 | return single_open(file, acpi_video_device_brightness_seq_show, | |
1006 | PDE(inode)->data); | |
1007 | } | |
1008 | ||
1009 | static ssize_t | |
4be44fcd LB |
1010 | acpi_video_device_write_brightness(struct file *file, |
1011 | const char __user * buffer, | |
1012 | size_t count, loff_t * data) | |
1da177e4 | 1013 | { |
50dd0969 JE |
1014 | struct seq_file *m = file->private_data; |
1015 | struct acpi_video_device *dev = m->private; | |
c88c5786 | 1016 | char str[5] = { 0 }; |
4be44fcd LB |
1017 | unsigned int level = 0; |
1018 | int i; | |
1da177e4 | 1019 | |
1da177e4 | 1020 | |
59d399d3 | 1021 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 1022 | return -EINVAL; |
1da177e4 LT |
1023 | |
1024 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1025 | return -EFAULT; |
1da177e4 LT |
1026 | |
1027 | str[count] = 0; | |
1028 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1029 | |
1da177e4 | 1030 | if (level > 100) |
d550d98d | 1031 | return -EFAULT; |
1da177e4 | 1032 | |
98fb8fe1 | 1033 | /* validate through the list of available levels */ |
1da177e4 LT |
1034 | for (i = 0; i < dev->brightness->count; i++) |
1035 | if (level == dev->brightness->levels[i]) { | |
4be44fcd LB |
1036 | if (ACPI_SUCCESS |
1037 | (acpi_video_device_lcd_set_level(dev, level))) | |
1da177e4 LT |
1038 | dev->brightness->curr = level; |
1039 | break; | |
1040 | } | |
1041 | ||
d550d98d | 1042 | return count; |
1da177e4 LT |
1043 | } |
1044 | ||
4be44fcd | 1045 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1046 | { |
50dd0969 | 1047 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
1048 | int status; |
1049 | int i; | |
1050 | union acpi_object *edid = NULL; | |
1da177e4 | 1051 | |
1da177e4 LT |
1052 | |
1053 | if (!dev) | |
1054 | goto out; | |
1055 | ||
4be44fcd | 1056 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 1057 | if (ACPI_FAILURE(status)) { |
4be44fcd | 1058 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
1059 | } |
1060 | ||
1061 | if (ACPI_FAILURE(status)) { | |
1062 | goto out; | |
1063 | } | |
1064 | ||
1065 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
1066 | for (i = 0; i < edid->buffer.length; i++) | |
1067 | seq_putc(seq, edid->buffer.pointer[i]); | |
1068 | } | |
1069 | ||
4be44fcd | 1070 | out: |
1da177e4 LT |
1071 | if (!edid) |
1072 | seq_printf(seq, "<not supported>\n"); | |
1073 | else | |
1074 | kfree(edid); | |
1075 | ||
d550d98d | 1076 | return 0; |
1da177e4 LT |
1077 | } |
1078 | ||
1079 | static int | |
4be44fcd | 1080 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1081 | { |
1082 | return single_open(file, acpi_video_device_EDID_seq_show, | |
1083 | PDE(inode)->data); | |
1084 | } | |
1085 | ||
4be44fcd | 1086 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 1087 | { |
251cb0bc | 1088 | struct proc_dir_entry *entry, *device_dir; |
1da177e4 LT |
1089 | struct acpi_video_device *vid_dev; |
1090 | ||
50dd0969 | 1091 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1092 | if (!vid_dev) |
d550d98d | 1093 | return -ENODEV; |
1da177e4 | 1094 | |
251cb0bc DT |
1095 | device_dir = proc_mkdir(acpi_device_bid(device), |
1096 | vid_dev->video->dir); | |
1097 | if (!device_dir) | |
1098 | return -ENOMEM; | |
1099 | ||
1100 | device_dir->owner = THIS_MODULE; | |
1da177e4 LT |
1101 | |
1102 | /* 'info' [R] */ | |
e0066c4e | 1103 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab | 1104 | &acpi_video_device_info_fops, acpi_driver_data(device)); |
1da177e4 | 1105 | if (!entry) |
251cb0bc | 1106 | goto err_remove_dir; |
1da177e4 LT |
1107 | |
1108 | /* 'state' [R/W] */ | |
cf7acfab DL |
1109 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1110 | entry = proc_create_data("state", S_IFREG | S_IRUGO | S_IWUSR, | |
e0066c4e | 1111 | device_dir, |
cf7acfab DL |
1112 | &acpi_video_device_state_fops, |
1113 | acpi_driver_data(device)); | |
1da177e4 | 1114 | if (!entry) |
251cb0bc | 1115 | goto err_remove_info; |
1da177e4 LT |
1116 | |
1117 | /* 'brightness' [R/W] */ | |
cf7acfab DL |
1118 | acpi_video_device_brightness_fops.write = |
1119 | acpi_video_device_write_brightness; | |
1120 | entry = proc_create_data("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
e0066c4e | 1121 | device_dir, |
cf7acfab DL |
1122 | &acpi_video_device_brightness_fops, |
1123 | acpi_driver_data(device)); | |
1da177e4 | 1124 | if (!entry) |
251cb0bc | 1125 | goto err_remove_state; |
1da177e4 LT |
1126 | |
1127 | /* 'EDID' [R] */ | |
e0066c4e | 1128 | entry = proc_create_data("EDID", S_IRUGO, device_dir, |
cf7acfab DL |
1129 | &acpi_video_device_EDID_fops, |
1130 | acpi_driver_data(device)); | |
1da177e4 | 1131 | if (!entry) |
251cb0bc | 1132 | goto err_remove_brightness; |
1da177e4 | 1133 | |
e0066c4e AD |
1134 | acpi_device_dir(device) = device_dir; |
1135 | ||
d550d98d | 1136 | return 0; |
251cb0bc DT |
1137 | |
1138 | err_remove_brightness: | |
1139 | remove_proc_entry("brightness", device_dir); | |
1140 | err_remove_state: | |
1141 | remove_proc_entry("state", device_dir); | |
1142 | err_remove_info: | |
1143 | remove_proc_entry("info", device_dir); | |
1144 | err_remove_dir: | |
1145 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); | |
1146 | return -ENOMEM; | |
1da177e4 LT |
1147 | } |
1148 | ||
4be44fcd | 1149 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1150 | { |
1151 | struct acpi_video_device *vid_dev; | |
251cb0bc | 1152 | struct proc_dir_entry *device_dir; |
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 | 1157 | |
251cb0bc DT |
1158 | device_dir = acpi_device_dir(device); |
1159 | if (device_dir) { | |
1160 | remove_proc_entry("info", device_dir); | |
1161 | remove_proc_entry("state", device_dir); | |
1162 | remove_proc_entry("brightness", device_dir); | |
1163 | remove_proc_entry("EDID", device_dir); | |
4be44fcd | 1164 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1165 | acpi_device_dir(device) = NULL; |
1166 | } | |
1167 | ||
d550d98d | 1168 | return 0; |
1da177e4 LT |
1169 | } |
1170 | ||
1da177e4 | 1171 | /* video bus */ |
4be44fcd | 1172 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1173 | { |
50dd0969 | 1174 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1175 | |
1da177e4 LT |
1176 | |
1177 | if (!video) | |
1178 | goto end; | |
1179 | ||
1180 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1181 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1182 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1183 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1184 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1185 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1186 | |
4be44fcd | 1187 | end: |
d550d98d | 1188 | return 0; |
1da177e4 LT |
1189 | } |
1190 | ||
4be44fcd | 1191 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1192 | { |
4be44fcd LB |
1193 | return single_open(file, acpi_video_bus_info_seq_show, |
1194 | PDE(inode)->data); | |
1da177e4 LT |
1195 | } |
1196 | ||
4be44fcd | 1197 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1198 | { |
50dd0969 | 1199 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1200 | |
1da177e4 LT |
1201 | |
1202 | if (!video) | |
1203 | goto end; | |
1204 | ||
96b2dd1f | 1205 | printk(KERN_INFO PREFIX "Please implement %s\n", __func__); |
1da177e4 LT |
1206 | seq_printf(seq, "<TODO>\n"); |
1207 | ||
4be44fcd | 1208 | end: |
d550d98d | 1209 | return 0; |
1da177e4 LT |
1210 | } |
1211 | ||
4be44fcd | 1212 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1213 | { |
1214 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1215 | } | |
1216 | ||
4be44fcd | 1217 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1218 | { |
50dd0969 | 1219 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1220 | unsigned long options; |
1221 | int status; | |
1da177e4 | 1222 | |
1da177e4 LT |
1223 | |
1224 | if (!video) | |
1225 | goto end; | |
1226 | ||
1227 | status = acpi_video_bus_POST_options(video, &options); | |
1228 | if (ACPI_SUCCESS(status)) { | |
1229 | if (!(options & 1)) { | |
4be44fcd LB |
1230 | printk(KERN_WARNING PREFIX |
1231 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1232 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1233 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 LT |
1234 | } |
1235 | printk("%lx\n", options); | |
98fb8fe1 | 1236 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1237 | if (options & 2) |
1238 | seq_printf(seq, " <PCI video>"); | |
1239 | if (options & 4) | |
1240 | seq_printf(seq, " <AGP video>"); | |
1241 | seq_putc(seq, '\n'); | |
1242 | } else | |
1243 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1244 | end: |
d550d98d | 1245 | return 0; |
1da177e4 LT |
1246 | } |
1247 | ||
1248 | static int | |
4be44fcd | 1249 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1250 | { |
4be44fcd LB |
1251 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1252 | PDE(inode)->data); | |
1da177e4 LT |
1253 | } |
1254 | ||
4be44fcd | 1255 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1256 | { |
50dd0969 | 1257 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1258 | int status; |
1259 | unsigned long id; | |
1da177e4 | 1260 | |
1da177e4 LT |
1261 | |
1262 | if (!video) | |
1263 | goto end; | |
1264 | ||
4be44fcd | 1265 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1266 | if (!ACPI_SUCCESS(status)) { |
1267 | seq_printf(seq, "<not supported>\n"); | |
1268 | goto end; | |
1269 | } | |
98fb8fe1 | 1270 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1271 | |
4be44fcd | 1272 | end: |
d550d98d | 1273 | return 0; |
1da177e4 LT |
1274 | } |
1275 | ||
4be44fcd | 1276 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1277 | { |
50dd0969 | 1278 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1279 | |
1da177e4 | 1280 | |
4be44fcd | 1281 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1282 | |
d550d98d | 1283 | return 0; |
1da177e4 LT |
1284 | } |
1285 | ||
4be44fcd | 1286 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1287 | { |
4be44fcd LB |
1288 | return single_open(file, acpi_video_bus_POST_seq_show, |
1289 | PDE(inode)->data); | |
1da177e4 LT |
1290 | } |
1291 | ||
4be44fcd | 1292 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1293 | { |
1294 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1295 | } | |
1296 | ||
1297 | static ssize_t | |
4be44fcd LB |
1298 | acpi_video_bus_write_POST(struct file *file, |
1299 | const char __user * buffer, | |
1300 | size_t count, loff_t * data) | |
1da177e4 | 1301 | { |
4be44fcd | 1302 | int status; |
50dd0969 JE |
1303 | struct seq_file *m = file->private_data; |
1304 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1305 | char str[12] = { 0 }; |
1306 | unsigned long opt, options; | |
1da177e4 | 1307 | |
1da177e4 | 1308 | |
1da177e4 | 1309 | if (!video || count + 1 > sizeof str) |
d550d98d | 1310 | return -EINVAL; |
1da177e4 LT |
1311 | |
1312 | status = acpi_video_bus_POST_options(video, &options); | |
1313 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1314 | return -EINVAL; |
1da177e4 LT |
1315 | |
1316 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1317 | return -EFAULT; |
1da177e4 LT |
1318 | |
1319 | str[count] = 0; | |
1320 | opt = strtoul(str, NULL, 0); | |
1321 | if (opt > 3) | |
d550d98d | 1322 | return -EFAULT; |
1da177e4 | 1323 | |
98fb8fe1 | 1324 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1325 | options |= 1; |
1326 | ||
1327 | if (options & (1ul << opt)) { | |
4be44fcd | 1328 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1329 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1330 | return -EFAULT; |
1da177e4 LT |
1331 | |
1332 | } | |
1333 | ||
d550d98d | 1334 | return count; |
1da177e4 LT |
1335 | } |
1336 | ||
1337 | static ssize_t | |
4be44fcd LB |
1338 | acpi_video_bus_write_DOS(struct file *file, |
1339 | const char __user * buffer, | |
1340 | size_t count, loff_t * data) | |
1da177e4 | 1341 | { |
4be44fcd | 1342 | int status; |
50dd0969 JE |
1343 | struct seq_file *m = file->private_data; |
1344 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1345 | char str[12] = { 0 }; |
1346 | unsigned long opt; | |
1da177e4 | 1347 | |
1da177e4 | 1348 | |
1da177e4 | 1349 | if (!video || count + 1 > sizeof str) |
d550d98d | 1350 | return -EINVAL; |
1da177e4 LT |
1351 | |
1352 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1353 | return -EFAULT; |
1da177e4 LT |
1354 | |
1355 | str[count] = 0; | |
1356 | opt = strtoul(str, NULL, 0); | |
1357 | if (opt > 7) | |
d550d98d | 1358 | return -EFAULT; |
1da177e4 | 1359 | |
4be44fcd | 1360 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1361 | |
1362 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1363 | return -EFAULT; |
1da177e4 | 1364 | |
d550d98d | 1365 | return count; |
1da177e4 LT |
1366 | } |
1367 | ||
4be44fcd | 1368 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1369 | { |
251cb0bc DT |
1370 | struct acpi_video_bus *video = acpi_driver_data(device); |
1371 | struct proc_dir_entry *device_dir; | |
1372 | struct proc_dir_entry *entry; | |
1da177e4 | 1373 | |
251cb0bc DT |
1374 | device_dir = proc_mkdir(acpi_device_bid(device), acpi_video_dir); |
1375 | if (!device_dir) | |
1376 | return -ENOMEM; | |
1da177e4 | 1377 | |
251cb0bc | 1378 | device_dir->owner = THIS_MODULE; |
1da177e4 LT |
1379 | |
1380 | /* 'info' [R] */ | |
e0066c4e | 1381 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab DL |
1382 | &acpi_video_bus_info_fops, |
1383 | acpi_driver_data(device)); | |
1da177e4 | 1384 | if (!entry) |
251cb0bc | 1385 | goto err_remove_dir; |
1da177e4 LT |
1386 | |
1387 | /* 'ROM' [R] */ | |
e0066c4e | 1388 | entry = proc_create_data("ROM", S_IRUGO, device_dir, |
cf7acfab DL |
1389 | &acpi_video_bus_ROM_fops, |
1390 | acpi_driver_data(device)); | |
1da177e4 | 1391 | if (!entry) |
251cb0bc | 1392 | goto err_remove_info; |
1da177e4 LT |
1393 | |
1394 | /* 'POST_info' [R] */ | |
e0066c4e | 1395 | entry = proc_create_data("POST_info", S_IRUGO, device_dir, |
cf7acfab DL |
1396 | &acpi_video_bus_POST_info_fops, |
1397 | acpi_driver_data(device)); | |
1da177e4 | 1398 | if (!entry) |
251cb0bc | 1399 | goto err_remove_rom; |
1da177e4 LT |
1400 | |
1401 | /* 'POST' [R/W] */ | |
cf7acfab | 1402 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
08acd4f8 | 1403 | entry = proc_create_data("POST", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1404 | device_dir, |
cf7acfab DL |
1405 | &acpi_video_bus_POST_fops, |
1406 | acpi_driver_data(device)); | |
1da177e4 | 1407 | if (!entry) |
251cb0bc | 1408 | goto err_remove_post_info; |
1da177e4 LT |
1409 | |
1410 | /* 'DOS' [R/W] */ | |
cf7acfab | 1411 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
08acd4f8 | 1412 | entry = proc_create_data("DOS", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1413 | device_dir, |
cf7acfab DL |
1414 | &acpi_video_bus_DOS_fops, |
1415 | acpi_driver_data(device)); | |
1da177e4 | 1416 | if (!entry) |
251cb0bc | 1417 | goto err_remove_post; |
1da177e4 | 1418 | |
251cb0bc | 1419 | video->dir = acpi_device_dir(device) = device_dir; |
d550d98d | 1420 | return 0; |
251cb0bc DT |
1421 | |
1422 | err_remove_post: | |
1423 | remove_proc_entry("POST", device_dir); | |
1424 | err_remove_post_info: | |
1425 | remove_proc_entry("POST_info", device_dir); | |
1426 | err_remove_rom: | |
1427 | remove_proc_entry("ROM", device_dir); | |
1428 | err_remove_info: | |
1429 | remove_proc_entry("info", device_dir); | |
1430 | err_remove_dir: | |
1431 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); | |
1432 | return -ENOMEM; | |
1da177e4 LT |
1433 | } |
1434 | ||
4be44fcd | 1435 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1436 | { |
251cb0bc DT |
1437 | struct proc_dir_entry *device_dir = acpi_device_dir(device); |
1438 | ||
1439 | if (device_dir) { | |
1440 | remove_proc_entry("info", device_dir); | |
1441 | remove_proc_entry("ROM", device_dir); | |
1442 | remove_proc_entry("POST_info", device_dir); | |
1443 | remove_proc_entry("POST", device_dir); | |
1444 | remove_proc_entry("DOS", device_dir); | |
4be44fcd | 1445 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1446 | acpi_device_dir(device) = NULL; |
1447 | } | |
1448 | ||
d550d98d | 1449 | return 0; |
1da177e4 LT |
1450 | } |
1451 | ||
1452 | /* -------------------------------------------------------------------------- | |
1453 | Driver Interface | |
1454 | -------------------------------------------------------------------------- */ | |
1455 | ||
1456 | /* device interface */ | |
82cae999 RZ |
1457 | static struct acpi_video_device_attrib* |
1458 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1459 | { | |
78eed028 DT |
1460 | struct acpi_video_enumerated_device *ids; |
1461 | int i; | |
1462 | ||
1463 | for (i = 0; i < video->attached_count; i++) { | |
1464 | ids = &video->attached_array[i]; | |
1465 | if ((ids->value.int_val & 0xffff) == device_id) | |
1466 | return &ids->value.attrib; | |
1467 | } | |
82cae999 | 1468 | |
82cae999 RZ |
1469 | return NULL; |
1470 | } | |
1da177e4 LT |
1471 | |
1472 | static int | |
4be44fcd LB |
1473 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1474 | struct acpi_video_bus *video) | |
1da177e4 | 1475 | { |
4be44fcd | 1476 | unsigned long device_id; |
973bf491 | 1477 | int status; |
4be44fcd | 1478 | struct acpi_video_device *data; |
82cae999 | 1479 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1480 | |
1481 | if (!device || !video) | |
d550d98d | 1482 | return -EINVAL; |
1da177e4 | 1483 | |
4be44fcd LB |
1484 | status = |
1485 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1486 | if (ACPI_SUCCESS(status)) { |
1487 | ||
36bcbec7 | 1488 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1489 | if (!data) |
d550d98d | 1490 | return -ENOMEM; |
1da177e4 | 1491 | |
1da177e4 LT |
1492 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1493 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1494 | acpi_driver_data(device) = data; | |
1495 | ||
1496 | data->device_id = device_id; | |
1497 | data->video = video; | |
1498 | data->dev = device; | |
1499 | ||
82cae999 RZ |
1500 | attribute = acpi_video_get_device_attr(video, device_id); |
1501 | ||
1502 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1503 | switch (attribute->display_type) { | |
1504 | case ACPI_VIDEO_DISPLAY_CRT: | |
1505 | data->flags.crt = 1; | |
1506 | break; | |
1507 | case ACPI_VIDEO_DISPLAY_TV: | |
1508 | data->flags.tvout = 1; | |
1509 | break; | |
1510 | case ACPI_VIDEO_DISPLAY_DVI: | |
1511 | data->flags.dvi = 1; | |
1512 | break; | |
1513 | case ACPI_VIDEO_DISPLAY_LCD: | |
1514 | data->flags.lcd = 1; | |
1515 | break; | |
1516 | default: | |
1517 | data->flags.unknown = 1; | |
1518 | break; | |
1519 | } | |
1520 | if(attribute->bios_can_detect) | |
1521 | data->flags.bios = 1; | |
1522 | } else | |
1da177e4 | 1523 | data->flags.unknown = 1; |
4be44fcd | 1524 | |
1da177e4 LT |
1525 | acpi_video_device_bind(video, data); |
1526 | acpi_video_device_find_cap(data); | |
1527 | ||
90130268 | 1528 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1529 | ACPI_DEVICE_NOTIFY, |
1530 | acpi_video_device_notify, | |
1531 | data); | |
1da177e4 LT |
1532 | if (ACPI_FAILURE(status)) { |
1533 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1534 | "Error installing notify handler\n")); |
973bf491 YL |
1535 | if(data->brightness) |
1536 | kfree(data->brightness->levels); | |
1537 | kfree(data->brightness); | |
1538 | kfree(data); | |
1539 | return -ENODEV; | |
1da177e4 LT |
1540 | } |
1541 | ||
bbac81f5 | 1542 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1543 | list_add_tail(&data->entry, &video->video_device_list); |
bbac81f5 | 1544 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1545 | |
1546 | acpi_video_device_add_fs(device); | |
1547 | ||
d550d98d | 1548 | return 0; |
1da177e4 LT |
1549 | } |
1550 | ||
d550d98d | 1551 | return -ENOENT; |
1da177e4 LT |
1552 | } |
1553 | ||
1554 | /* | |
1555 | * Arg: | |
1556 | * video : video bus device | |
1557 | * | |
1558 | * Return: | |
1559 | * none | |
1560 | * | |
1561 | * Enumerate the video device list of the video bus, | |
1562 | * bind the ids with the corresponding video devices | |
1563 | * under the video bus. | |
4be44fcd | 1564 | */ |
1da177e4 | 1565 | |
4be44fcd | 1566 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1567 | { |
ff102ea9 DT |
1568 | struct acpi_video_device *dev; |
1569 | ||
bbac81f5 | 1570 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1571 | |
1572 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1573 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1574 | |
bbac81f5 | 1575 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1576 | } |
1577 | ||
1578 | /* | |
1579 | * Arg: | |
1580 | * video : video bus device | |
1581 | * device : video output device under the video | |
1582 | * bus | |
1583 | * | |
1584 | * Return: | |
1585 | * none | |
1586 | * | |
1587 | * Bind the ids with the corresponding video devices | |
1588 | * under the video bus. | |
4be44fcd | 1589 | */ |
1da177e4 LT |
1590 | |
1591 | static void | |
4be44fcd LB |
1592 | acpi_video_device_bind(struct acpi_video_bus *video, |
1593 | struct acpi_video_device *device) | |
1da177e4 | 1594 | { |
78eed028 | 1595 | struct acpi_video_enumerated_device *ids; |
4be44fcd | 1596 | int i; |
1da177e4 | 1597 | |
78eed028 DT |
1598 | for (i = 0; i < video->attached_count; i++) { |
1599 | ids = &video->attached_array[i]; | |
1600 | if (device->device_id == (ids->value.int_val & 0xffff)) { | |
1601 | ids->bind_info = device; | |
1da177e4 LT |
1602 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); |
1603 | } | |
1604 | } | |
1da177e4 LT |
1605 | } |
1606 | ||
1607 | /* | |
1608 | * Arg: | |
1609 | * video : video bus device | |
1610 | * | |
1611 | * Return: | |
1612 | * < 0 : error | |
1613 | * | |
1614 | * Call _DOD to enumerate all devices attached to display adapter | |
1615 | * | |
4be44fcd | 1616 | */ |
1da177e4 LT |
1617 | |
1618 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1619 | { | |
4be44fcd LB |
1620 | int status; |
1621 | int count; | |
1622 | int i; | |
78eed028 | 1623 | struct acpi_video_enumerated_device *active_list; |
4be44fcd LB |
1624 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1625 | union acpi_object *dod = NULL; | |
1626 | union acpi_object *obj; | |
1da177e4 | 1627 | |
90130268 | 1628 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1629 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1630 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1631 | return status; |
1da177e4 LT |
1632 | } |
1633 | ||
50dd0969 | 1634 | dod = buffer.pointer; |
1da177e4 | 1635 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1636 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1637 | status = -EFAULT; |
1638 | goto out; | |
1639 | } | |
1640 | ||
1641 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1642 | dod->package.count)); |
1da177e4 | 1643 | |
78eed028 DT |
1644 | active_list = kcalloc(1 + dod->package.count, |
1645 | sizeof(struct acpi_video_enumerated_device), | |
1646 | GFP_KERNEL); | |
1647 | if (!active_list) { | |
1da177e4 LT |
1648 | status = -ENOMEM; |
1649 | goto out; | |
1650 | } | |
1651 | ||
1652 | count = 0; | |
1653 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1654 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1655 | |
1656 | if (obj->type != ACPI_TYPE_INTEGER) { | |
78eed028 DT |
1657 | printk(KERN_ERR PREFIX |
1658 | "Invalid _DOD data in element %d\n", i); | |
1659 | continue; | |
1da177e4 | 1660 | } |
78eed028 DT |
1661 | |
1662 | active_list[count].value.int_val = obj->integer.value; | |
1663 | active_list[count].bind_info = NULL; | |
4be44fcd LB |
1664 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1665 | (int)obj->integer.value)); | |
1da177e4 LT |
1666 | count++; |
1667 | } | |
1da177e4 | 1668 | |
6044ec88 | 1669 | kfree(video->attached_array); |
4be44fcd | 1670 | |
78eed028 | 1671 | video->attached_array = active_list; |
1da177e4 | 1672 | video->attached_count = count; |
78eed028 DT |
1673 | |
1674 | out: | |
02438d87 | 1675 | kfree(buffer.pointer); |
d550d98d | 1676 | return status; |
1da177e4 LT |
1677 | } |
1678 | ||
4be44fcd LB |
1679 | static int |
1680 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1681 | u32 level_current, u32 event) | |
1da177e4 | 1682 | { |
63f0edfc | 1683 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
1684 | max = max_below = 0; |
1685 | min = min_above = 255; | |
63f0edfc AS |
1686 | /* Find closest level to level_current */ |
1687 | for (i = 0; i < device->brightness->count; i++) { | |
1688 | l = device->brightness->levels[i]; | |
1689 | if (abs(l - level_current) < abs(delta)) { | |
1690 | delta = l - level_current; | |
1691 | if (!delta) | |
1692 | break; | |
1693 | } | |
1694 | } | |
1695 | /* Ajust level_current to closest available level */ | |
1696 | level_current += delta; | |
f4715189 TT |
1697 | for (i = 0; i < device->brightness->count; i++) { |
1698 | l = device->brightness->levels[i]; | |
1699 | if (l < min) | |
1700 | min = l; | |
1701 | if (l > max) | |
1702 | max = l; | |
1703 | if (l < min_above && l > level_current) | |
1704 | min_above = l; | |
1705 | if (l > max_below && l < level_current) | |
1706 | max_below = l; | |
1707 | } | |
1708 | ||
1709 | switch (event) { | |
1710 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1711 | return (level_current < max) ? min_above : min; | |
1712 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1713 | return (level_current < max) ? min_above : max; | |
1714 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1715 | return (level_current > min) ? max_below : min; | |
1716 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1717 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1718 | return 0; | |
1719 | default: | |
1720 | return level_current; | |
1721 | } | |
1da177e4 LT |
1722 | } |
1723 | ||
1da177e4 | 1724 | static void |
4be44fcd | 1725 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 LT |
1726 | { |
1727 | unsigned long level_current, level_next; | |
469778c1 JJ |
1728 | if (!device->brightness) |
1729 | return; | |
1da177e4 LT |
1730 | acpi_video_device_lcd_get_level_current(device, &level_current); |
1731 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1732 | acpi_video_device_lcd_set_level(device, level_next); | |
1733 | } | |
1734 | ||
1735 | static int | |
4be44fcd LB |
1736 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1737 | struct acpi_device *device) | |
1da177e4 | 1738 | { |
4be44fcd | 1739 | int status = 0; |
ff102ea9 | 1740 | struct acpi_device *dev; |
1da177e4 LT |
1741 | |
1742 | acpi_video_device_enumerate(video); | |
1743 | ||
ff102ea9 | 1744 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
1745 | |
1746 | status = acpi_video_bus_get_one_device(dev, video); | |
1747 | if (ACPI_FAILURE(status)) { | |
d385c2a8 ZR |
1748 | ACPI_DEBUG_PRINT((ACPI_DB_WARN, |
1749 | "Cant attach device")); | |
1da177e4 LT |
1750 | continue; |
1751 | } | |
1da177e4 | 1752 | } |
d550d98d | 1753 | return status; |
1da177e4 LT |
1754 | } |
1755 | ||
4be44fcd | 1756 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1757 | { |
031ec77b | 1758 | acpi_status status; |
1da177e4 LT |
1759 | struct acpi_video_bus *video; |
1760 | ||
1da177e4 LT |
1761 | |
1762 | if (!device || !device->video) | |
d550d98d | 1763 | return -ENOENT; |
1da177e4 LT |
1764 | |
1765 | video = device->video; | |
1766 | ||
1da177e4 LT |
1767 | acpi_video_device_remove_fs(device->dev); |
1768 | ||
90130268 | 1769 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1770 | ACPI_DEVICE_NOTIFY, |
1771 | acpi_video_device_notify); | |
599a52d1 | 1772 | backlight_device_unregister(device->backlight); |
702ed512 ZR |
1773 | if (device->cdev) { |
1774 | sysfs_remove_link(&device->dev->dev.kobj, | |
1775 | "thermal_cooling"); | |
1776 | sysfs_remove_link(&device->cdev->device.kobj, | |
1777 | "device"); | |
1778 | thermal_cooling_device_unregister(device->cdev); | |
1779 | device->cdev = NULL; | |
1780 | } | |
23b0f015 | 1781 | video_output_unregister(device->output_dev); |
ff102ea9 | 1782 | |
d550d98d | 1783 | return 0; |
1da177e4 LT |
1784 | } |
1785 | ||
4be44fcd | 1786 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1787 | { |
4be44fcd | 1788 | int status; |
ff102ea9 | 1789 | struct acpi_video_device *dev, *next; |
1da177e4 | 1790 | |
bbac81f5 | 1791 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1792 | |
ff102ea9 | 1793 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 1794 | |
ff102ea9 | 1795 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
1796 | if (ACPI_FAILURE(status)) |
1797 | printk(KERN_WARNING PREFIX | |
1798 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1799 | |
ff102ea9 DT |
1800 | if (dev->brightness) { |
1801 | kfree(dev->brightness->levels); | |
1802 | kfree(dev->brightness); | |
1803 | } | |
1804 | list_del(&dev->entry); | |
1805 | kfree(dev); | |
1da177e4 LT |
1806 | } |
1807 | ||
bbac81f5 | 1808 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1809 | |
d550d98d | 1810 | return 0; |
1da177e4 LT |
1811 | } |
1812 | ||
1813 | /* acpi_video interface */ | |
1814 | ||
4be44fcd | 1815 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 1816 | { |
a21101c4 | 1817 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
1818 | } |
1819 | ||
4be44fcd | 1820 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1821 | { |
1822 | return acpi_video_bus_DOS(video, 0, 1); | |
1823 | } | |
1824 | ||
4be44fcd | 1825 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1826 | { |
50dd0969 | 1827 | struct acpi_video_bus *video = data; |
4be44fcd | 1828 | struct acpi_device *device = NULL; |
e9dab196 LY |
1829 | struct input_dev *input; |
1830 | int keycode; | |
1831 | ||
1da177e4 | 1832 | if (!video) |
d550d98d | 1833 | return; |
1da177e4 | 1834 | |
e6afa0de | 1835 | device = video->device; |
e9dab196 | 1836 | input = video->input; |
1da177e4 LT |
1837 | |
1838 | switch (event) { | |
98fb8fe1 | 1839 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 1840 | * most likely via hotkey. */ |
14e04fb3 | 1841 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1842 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1843 | break; |
1844 | ||
98fb8fe1 | 1845 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1846 | * connector. */ |
1847 | acpi_video_device_enumerate(video); | |
1848 | acpi_video_device_rebind(video); | |
14e04fb3 | 1849 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1850 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1851 | break; |
1852 | ||
4be44fcd | 1853 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
25c87f7f | 1854 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1855 | keycode = KEY_SWITCHVIDEOMODE; |
1856 | break; | |
4be44fcd | 1857 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
25c87f7f | 1858 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1859 | keycode = KEY_VIDEO_NEXT; |
1860 | break; | |
4be44fcd | 1861 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
14e04fb3 | 1862 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1863 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
1864 | break; |
1865 | ||
1866 | default: | |
e9dab196 | 1867 | keycode = KEY_UNKNOWN; |
1da177e4 | 1868 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1869 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1870 | break; |
1871 | } | |
1872 | ||
7761f638 | 1873 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
1874 | input_report_key(input, keycode, 1); |
1875 | input_sync(input); | |
1876 | input_report_key(input, keycode, 0); | |
1877 | input_sync(input); | |
1878 | ||
d550d98d | 1879 | return; |
1da177e4 LT |
1880 | } |
1881 | ||
4be44fcd | 1882 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1883 | { |
50dd0969 | 1884 | struct acpi_video_device *video_device = data; |
4be44fcd | 1885 | struct acpi_device *device = NULL; |
e9dab196 LY |
1886 | struct acpi_video_bus *bus; |
1887 | struct input_dev *input; | |
1888 | int keycode; | |
1da177e4 | 1889 | |
1da177e4 | 1890 | if (!video_device) |
d550d98d | 1891 | return; |
1da177e4 | 1892 | |
e6afa0de | 1893 | device = video_device->dev; |
e9dab196 LY |
1894 | bus = video_device->video; |
1895 | input = bus->input; | |
1da177e4 LT |
1896 | |
1897 | switch (event) { | |
4be44fcd | 1898 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
8a681a4d ZR |
1899 | if (brightness_switch_enabled) |
1900 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1901 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1902 | keycode = KEY_BRIGHTNESS_CYCLE; |
1903 | break; | |
4be44fcd | 1904 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
8a681a4d ZR |
1905 | if (brightness_switch_enabled) |
1906 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1907 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1908 | keycode = KEY_BRIGHTNESSUP; |
1909 | break; | |
4be44fcd | 1910 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
8a681a4d ZR |
1911 | if (brightness_switch_enabled) |
1912 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1913 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1914 | keycode = KEY_BRIGHTNESSDOWN; |
1915 | break; | |
4be44fcd | 1916 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
8a681a4d ZR |
1917 | if (brightness_switch_enabled) |
1918 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1919 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1920 | keycode = KEY_BRIGHTNESS_ZERO; |
1921 | break; | |
4be44fcd | 1922 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
8a681a4d ZR |
1923 | if (brightness_switch_enabled) |
1924 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1925 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1926 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
1927 | break; |
1928 | default: | |
e9dab196 | 1929 | keycode = KEY_UNKNOWN; |
1da177e4 | 1930 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1931 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1932 | break; |
1933 | } | |
e9dab196 | 1934 | |
7761f638 | 1935 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
1936 | input_report_key(input, keycode, 1); |
1937 | input_sync(input); | |
1938 | input_report_key(input, keycode, 0); | |
1939 | input_sync(input); | |
1940 | ||
d550d98d | 1941 | return; |
1da177e4 LT |
1942 | } |
1943 | ||
e6d9da1d | 1944 | static int instance; |
863c1490 MG |
1945 | static int acpi_video_resume(struct acpi_device *device) |
1946 | { | |
1947 | struct acpi_video_bus *video; | |
1948 | struct acpi_video_device *video_device; | |
1949 | int i; | |
1950 | ||
1951 | if (!device || !acpi_driver_data(device)) | |
1952 | return -EINVAL; | |
1953 | ||
1954 | video = acpi_driver_data(device); | |
1955 | ||
1956 | for (i = 0; i < video->attached_count; i++) { | |
1957 | video_device = video->attached_array[i].bind_info; | |
1958 | if (video_device && video_device->backlight) | |
1959 | acpi_video_set_brightness(video_device->backlight); | |
1960 | } | |
1961 | return AE_OK; | |
1962 | } | |
1963 | ||
4be44fcd | 1964 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1965 | { |
f51e8391 DT |
1966 | acpi_status status; |
1967 | struct acpi_video_bus *video; | |
e9dab196 | 1968 | struct input_dev *input; |
f51e8391 | 1969 | int error; |
1da177e4 | 1970 | |
36bcbec7 | 1971 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 1972 | if (!video) |
d550d98d | 1973 | return -ENOMEM; |
1da177e4 | 1974 | |
e6d9da1d ZR |
1975 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
1976 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
1977 | if (instance) | |
1978 | device->pnp.bus_id[3] = '0' + instance; | |
1979 | instance ++; | |
1980 | } | |
1981 | ||
e6afa0de | 1982 | video->device = device; |
1da177e4 LT |
1983 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
1984 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1985 | acpi_driver_data(device) = video; | |
1986 | ||
1987 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
1988 | error = acpi_video_bus_check(video); |
1989 | if (error) | |
1990 | goto err_free_video; | |
1da177e4 | 1991 | |
f51e8391 DT |
1992 | error = acpi_video_bus_add_fs(device); |
1993 | if (error) | |
1994 | goto err_free_video; | |
1da177e4 | 1995 | |
bbac81f5 | 1996 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
1997 | INIT_LIST_HEAD(&video->video_device_list); |
1998 | ||
1999 | acpi_video_bus_get_devices(video, device); | |
2000 | acpi_video_bus_start_devices(video); | |
2001 | ||
90130268 | 2002 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
2003 | ACPI_DEVICE_NOTIFY, |
2004 | acpi_video_bus_notify, video); | |
1da177e4 LT |
2005 | if (ACPI_FAILURE(status)) { |
2006 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 2007 | "Error installing notify handler\n")); |
f51e8391 DT |
2008 | error = -ENODEV; |
2009 | goto err_stop_video; | |
1da177e4 LT |
2010 | } |
2011 | ||
e9dab196 | 2012 | video->input = input = input_allocate_device(); |
f51e8391 DT |
2013 | if (!input) { |
2014 | error = -ENOMEM; | |
2015 | goto err_uninstall_notify; | |
2016 | } | |
e9dab196 LY |
2017 | |
2018 | snprintf(video->phys, sizeof(video->phys), | |
2019 | "%s/video/input0", acpi_device_hid(video->device)); | |
2020 | ||
2021 | input->name = acpi_device_name(video->device); | |
2022 | input->phys = video->phys; | |
2023 | input->id.bustype = BUS_HOST; | |
2024 | input->id.product = 0x06; | |
91c05c66 | 2025 | input->dev.parent = &device->dev; |
e9dab196 LY |
2026 | input->evbit[0] = BIT(EV_KEY); |
2027 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
2028 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
2029 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
2030 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
2031 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
2032 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
2033 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
2034 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
2035 | set_bit(KEY_UNKNOWN, input->keybit); | |
e9dab196 | 2036 | |
f51e8391 DT |
2037 | error = input_register_device(input); |
2038 | if (error) | |
2039 | goto err_free_input_dev; | |
e9dab196 | 2040 | |
1da177e4 | 2041 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
2042 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
2043 | video->flags.multihead ? "yes" : "no", | |
2044 | video->flags.rom ? "yes" : "no", | |
2045 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 2046 | |
f51e8391 DT |
2047 | return 0; |
2048 | ||
2049 | err_free_input_dev: | |
2050 | input_free_device(input); | |
2051 | err_uninstall_notify: | |
2052 | acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, | |
2053 | acpi_video_bus_notify); | |
2054 | err_stop_video: | |
2055 | acpi_video_bus_stop_devices(video); | |
2056 | acpi_video_bus_put_devices(video); | |
2057 | kfree(video->attached_array); | |
2058 | acpi_video_bus_remove_fs(device); | |
2059 | err_free_video: | |
2060 | kfree(video); | |
2061 | acpi_driver_data(device) = NULL; | |
1da177e4 | 2062 | |
f51e8391 | 2063 | return error; |
1da177e4 LT |
2064 | } |
2065 | ||
4be44fcd | 2066 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 2067 | { |
4be44fcd LB |
2068 | acpi_status status = 0; |
2069 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 2070 | |
1da177e4 LT |
2071 | |
2072 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 2073 | return -EINVAL; |
1da177e4 | 2074 | |
50dd0969 | 2075 | video = acpi_driver_data(device); |
1da177e4 LT |
2076 | |
2077 | acpi_video_bus_stop_devices(video); | |
2078 | ||
90130268 | 2079 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
2080 | ACPI_DEVICE_NOTIFY, |
2081 | acpi_video_bus_notify); | |
1da177e4 LT |
2082 | |
2083 | acpi_video_bus_put_devices(video); | |
2084 | acpi_video_bus_remove_fs(device); | |
2085 | ||
e9dab196 | 2086 | input_unregister_device(video->input); |
6044ec88 | 2087 | kfree(video->attached_array); |
1da177e4 LT |
2088 | kfree(video); |
2089 | ||
d550d98d | 2090 | return 0; |
1da177e4 LT |
2091 | } |
2092 | ||
4be44fcd | 2093 | static int __init acpi_video_init(void) |
1da177e4 | 2094 | { |
4be44fcd | 2095 | int result = 0; |
1da177e4 | 2096 | |
1da177e4 LT |
2097 | |
2098 | /* | |
4be44fcd LB |
2099 | acpi_dbg_level = 0xFFFFFFFF; |
2100 | acpi_dbg_layer = 0x08000000; | |
2101 | */ | |
1da177e4 LT |
2102 | |
2103 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2104 | if (!acpi_video_dir) | |
d550d98d | 2105 | return -ENODEV; |
1da177e4 LT |
2106 | acpi_video_dir->owner = THIS_MODULE; |
2107 | ||
2108 | result = acpi_bus_register_driver(&acpi_video_bus); | |
2109 | if (result < 0) { | |
2110 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 2111 | return -ENODEV; |
1da177e4 LT |
2112 | } |
2113 | ||
d550d98d | 2114 | return 0; |
1da177e4 LT |
2115 | } |
2116 | ||
4be44fcd | 2117 | static void __exit acpi_video_exit(void) |
1da177e4 | 2118 | { |
1da177e4 LT |
2119 | |
2120 | acpi_bus_unregister_driver(&acpi_video_bus); | |
2121 | ||
2122 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2123 | ||
d550d98d | 2124 | return; |
1da177e4 LT |
2125 | } |
2126 | ||
2127 | module_init(acpi_video_init); | |
2128 | module_exit(acpi_video_exit); |