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 | |
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 = { | |
cf7acfab | 195 | .owner = THIS_MODULE, |
4be44fcd LB |
196 | .open = acpi_video_bus_info_open_fs, |
197 | .read = seq_read, | |
198 | .llseek = seq_lseek, | |
199 | .release = single_release, | |
1da177e4 LT |
200 | }; |
201 | ||
202 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
203 | static struct file_operations acpi_video_bus_ROM_fops = { | |
cf7acfab | 204 | .owner = THIS_MODULE, |
4be44fcd LB |
205 | .open = acpi_video_bus_ROM_open_fs, |
206 | .read = seq_read, | |
207 | .llseek = seq_lseek, | |
208 | .release = single_release, | |
1da177e4 LT |
209 | }; |
210 | ||
4be44fcd LB |
211 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
212 | struct file *file); | |
1da177e4 | 213 | static struct file_operations acpi_video_bus_POST_info_fops = { |
cf7acfab | 214 | .owner = THIS_MODULE, |
4be44fcd LB |
215 | .open = acpi_video_bus_POST_info_open_fs, |
216 | .read = seq_read, | |
217 | .llseek = seq_lseek, | |
218 | .release = single_release, | |
1da177e4 LT |
219 | }; |
220 | ||
221 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
222 | static struct file_operations acpi_video_bus_POST_fops = { | |
cf7acfab | 223 | .owner = THIS_MODULE, |
4be44fcd LB |
224 | .open = acpi_video_bus_POST_open_fs, |
225 | .read = seq_read, | |
226 | .llseek = seq_lseek, | |
227 | .release = single_release, | |
1da177e4 LT |
228 | }; |
229 | ||
1da177e4 LT |
230 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
231 | static struct file_operations acpi_video_bus_DOS_fops = { | |
cf7acfab | 232 | .owner = THIS_MODULE, |
4be44fcd LB |
233 | .open = acpi_video_bus_DOS_open_fs, |
234 | .read = seq_read, | |
235 | .llseek = seq_lseek, | |
236 | .release = single_release, | |
1da177e4 LT |
237 | }; |
238 | ||
239 | /* device */ | |
4be44fcd LB |
240 | static int acpi_video_device_info_open_fs(struct inode *inode, |
241 | struct file *file); | |
1da177e4 | 242 | static struct file_operations acpi_video_device_info_fops = { |
cf7acfab | 243 | .owner = THIS_MODULE, |
4be44fcd LB |
244 | .open = acpi_video_device_info_open_fs, |
245 | .read = seq_read, | |
246 | .llseek = seq_lseek, | |
247 | .release = single_release, | |
1da177e4 LT |
248 | }; |
249 | ||
4be44fcd LB |
250 | static int acpi_video_device_state_open_fs(struct inode *inode, |
251 | struct file *file); | |
1da177e4 | 252 | static struct file_operations acpi_video_device_state_fops = { |
cf7acfab | 253 | .owner = THIS_MODULE, |
4be44fcd LB |
254 | .open = acpi_video_device_state_open_fs, |
255 | .read = seq_read, | |
256 | .llseek = seq_lseek, | |
257 | .release = single_release, | |
1da177e4 LT |
258 | }; |
259 | ||
4be44fcd LB |
260 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
261 | struct file *file); | |
1da177e4 | 262 | static struct file_operations acpi_video_device_brightness_fops = { |
cf7acfab | 263 | .owner = THIS_MODULE, |
4be44fcd LB |
264 | .open = acpi_video_device_brightness_open_fs, |
265 | .read = seq_read, | |
266 | .llseek = seq_lseek, | |
267 | .release = single_release, | |
1da177e4 LT |
268 | }; |
269 | ||
4be44fcd LB |
270 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
271 | struct file *file); | |
1da177e4 | 272 | static struct file_operations acpi_video_device_EDID_fops = { |
cf7acfab | 273 | .owner = THIS_MODULE, |
4be44fcd LB |
274 | .open = acpi_video_device_EDID_open_fs, |
275 | .read = seq_read, | |
276 | .llseek = seq_lseek, | |
277 | .release = single_release, | |
1da177e4 LT |
278 | }; |
279 | ||
4be44fcd | 280 | static char device_decode[][30] = { |
1da177e4 LT |
281 | "motherboard VGA device", |
282 | "PCI VGA device", | |
283 | "AGP VGA device", | |
284 | "UNKNOWN", | |
285 | }; | |
286 | ||
4be44fcd LB |
287 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
288 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
289 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
290 | struct acpi_video_device *device); | |
1da177e4 | 291 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
2f3d000a YL |
292 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
293 | int level); | |
294 | static int acpi_video_device_lcd_get_level_current( | |
295 | struct acpi_video_device *device, | |
296 | unsigned long *level); | |
4be44fcd LB |
297 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
298 | u32 level_current, u32 event); | |
299 | static void acpi_video_switch_brightness(struct acpi_video_device *device, | |
300 | int event); | |
23b0f015 LY |
301 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
302 | unsigned long *state); | |
303 | static int acpi_video_output_get(struct output_device *od); | |
304 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 305 | |
2f3d000a YL |
306 | /*backlight device sysfs support*/ |
307 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
308 | { | |
309 | unsigned long cur_level; | |
38531e6f | 310 | int i; |
2f3d000a | 311 | struct acpi_video_device *vd = |
655bfd7a | 312 | (struct acpi_video_device *)bl_get_data(bd); |
2f3d000a | 313 | acpi_video_device_lcd_get_level_current(vd, &cur_level); |
38531e6f MG |
314 | for (i = 2; i < vd->brightness->count; i++) { |
315 | if (vd->brightness->levels[i] == cur_level) | |
316 | /* The first two entries are special - see page 575 | |
317 | of the ACPI spec 3.0 */ | |
318 | return i-2; | |
319 | } | |
320 | return 0; | |
2f3d000a YL |
321 | } |
322 | ||
323 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
324 | { | |
38531e6f | 325 | int request_level = bd->props.brightness+2; |
2f3d000a | 326 | struct acpi_video_device *vd = |
655bfd7a | 327 | (struct acpi_video_device *)bl_get_data(bd); |
38531e6f MG |
328 | acpi_video_device_lcd_set_level(vd, |
329 | vd->brightness->levels[request_level]); | |
2f3d000a YL |
330 | return 0; |
331 | } | |
332 | ||
599a52d1 RP |
333 | static struct backlight_ops acpi_backlight_ops = { |
334 | .get_brightness = acpi_video_get_brightness, | |
335 | .update_status = acpi_video_set_brightness, | |
336 | }; | |
337 | ||
23b0f015 LY |
338 | /*video output device sysfs support*/ |
339 | static int acpi_video_output_get(struct output_device *od) | |
340 | { | |
341 | unsigned long state; | |
342 | struct acpi_video_device *vd = | |
60043428 | 343 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
344 | acpi_video_device_get_state(vd, &state); |
345 | return (int)state; | |
346 | } | |
347 | ||
348 | static int acpi_video_output_set(struct output_device *od) | |
349 | { | |
350 | unsigned long state = od->request_state; | |
351 | struct acpi_video_device *vd= | |
60043428 | 352 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
353 | return acpi_video_device_set_state(vd, state); |
354 | } | |
355 | ||
356 | static struct output_properties acpi_output_properties = { | |
357 | .set_state = acpi_video_output_set, | |
358 | .get_status = acpi_video_output_get, | |
359 | }; | |
702ed512 ZR |
360 | |
361 | ||
362 | /* thermal cooling device callbacks */ | |
363 | static int video_get_max_state(struct thermal_cooling_device *cdev, char *buf) | |
364 | { | |
365 | struct acpi_device *device = cdev->devdata; | |
366 | struct acpi_video_device *video = acpi_driver_data(device); | |
367 | ||
368 | return sprintf(buf, "%d\n", video->brightness->count - 3); | |
369 | } | |
370 | ||
371 | static int video_get_cur_state(struct thermal_cooling_device *cdev, char *buf) | |
372 | { | |
373 | struct acpi_device *device = cdev->devdata; | |
374 | struct acpi_video_device *video = acpi_driver_data(device); | |
375 | unsigned long level; | |
376 | int state; | |
377 | ||
378 | acpi_video_device_lcd_get_level_current(video, &level); | |
379 | for (state = 2; state < video->brightness->count; state++) | |
380 | if (level == video->brightness->levels[state]) | |
381 | return sprintf(buf, "%d\n", | |
382 | video->brightness->count - state - 1); | |
383 | ||
384 | return -EINVAL; | |
385 | } | |
386 | ||
387 | static int | |
388 | video_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state) | |
389 | { | |
390 | struct acpi_device *device = cdev->devdata; | |
391 | struct acpi_video_device *video = acpi_driver_data(device); | |
392 | int level; | |
393 | ||
394 | if ( state >= video->brightness->count - 2) | |
395 | return -EINVAL; | |
396 | ||
397 | state = video->brightness->count - state; | |
398 | level = video->brightness->levels[state -1]; | |
399 | return acpi_video_device_lcd_set_level(video, level); | |
400 | } | |
401 | ||
402 | static struct thermal_cooling_device_ops video_cooling_ops = { | |
403 | .get_max_state = video_get_max_state, | |
404 | .get_cur_state = video_get_cur_state, | |
405 | .set_cur_state = video_set_cur_state, | |
406 | }; | |
407 | ||
1da177e4 LT |
408 | /* -------------------------------------------------------------------------- |
409 | Video Management | |
410 | -------------------------------------------------------------------------- */ | |
411 | ||
412 | /* device */ | |
413 | ||
414 | static int | |
4be44fcd | 415 | acpi_video_device_query(struct acpi_video_device *device, unsigned long *state) |
1da177e4 | 416 | { |
4be44fcd | 417 | int status; |
90130268 PM |
418 | |
419 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 420 | |
d550d98d | 421 | return status; |
1da177e4 LT |
422 | } |
423 | ||
424 | static int | |
4be44fcd LB |
425 | acpi_video_device_get_state(struct acpi_video_device *device, |
426 | unsigned long *state) | |
1da177e4 | 427 | { |
4be44fcd | 428 | int status; |
1da177e4 | 429 | |
90130268 | 430 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 431 | |
d550d98d | 432 | return status; |
1da177e4 LT |
433 | } |
434 | ||
435 | static int | |
4be44fcd | 436 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 437 | { |
4be44fcd LB |
438 | int status; |
439 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
440 | struct acpi_object_list args = { 1, &arg0 }; | |
824b558b | 441 | unsigned long ret; |
1da177e4 | 442 | |
1da177e4 LT |
443 | |
444 | arg0.integer.value = state; | |
90130268 | 445 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 446 | |
d550d98d | 447 | return status; |
1da177e4 LT |
448 | } |
449 | ||
450 | static int | |
4be44fcd LB |
451 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
452 | union acpi_object **levels) | |
1da177e4 | 453 | { |
4be44fcd LB |
454 | int status; |
455 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
456 | union acpi_object *obj; | |
1da177e4 | 457 | |
1da177e4 LT |
458 | |
459 | *levels = NULL; | |
460 | ||
90130268 | 461 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 462 | if (!ACPI_SUCCESS(status)) |
d550d98d | 463 | return status; |
4be44fcd | 464 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 465 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 466 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
467 | status = -EFAULT; |
468 | goto err; | |
469 | } | |
470 | ||
471 | *levels = obj; | |
472 | ||
d550d98d | 473 | return 0; |
1da177e4 | 474 | |
4be44fcd | 475 | err: |
6044ec88 | 476 | kfree(buffer.pointer); |
1da177e4 | 477 | |
d550d98d | 478 | return status; |
1da177e4 LT |
479 | } |
480 | ||
481 | static int | |
4be44fcd | 482 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 483 | { |
4500ca8e | 484 | int status = AE_OK; |
4be44fcd LB |
485 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
486 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 487 | |
1da177e4 LT |
488 | |
489 | arg0.integer.value = level; | |
1da177e4 | 490 | |
4500ca8e AS |
491 | if (device->cap._BCM) |
492 | status = acpi_evaluate_object(device->dev->handle, "_BCM", | |
493 | &args, NULL); | |
494 | device->brightness->curr = level; | |
d550d98d | 495 | return status; |
1da177e4 LT |
496 | } |
497 | ||
498 | static int | |
4be44fcd LB |
499 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
500 | unsigned long *level) | |
1da177e4 | 501 | { |
4500ca8e AS |
502 | if (device->cap._BQC) |
503 | return acpi_evaluate_integer(device->dev->handle, "_BQC", NULL, | |
504 | level); | |
505 | *level = device->brightness->curr; | |
506 | return AE_OK; | |
1da177e4 LT |
507 | } |
508 | ||
509 | static int | |
4be44fcd LB |
510 | acpi_video_device_EDID(struct acpi_video_device *device, |
511 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 512 | { |
4be44fcd LB |
513 | int status; |
514 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
515 | union acpi_object *obj; | |
516 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
517 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 518 | |
1da177e4 LT |
519 | |
520 | *edid = NULL; | |
521 | ||
522 | if (!device) | |
d550d98d | 523 | return -ENODEV; |
1da177e4 LT |
524 | if (length == 128) |
525 | arg0.integer.value = 1; | |
526 | else if (length == 256) | |
527 | arg0.integer.value = 2; | |
528 | else | |
d550d98d | 529 | return -EINVAL; |
1da177e4 | 530 | |
90130268 | 531 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 532 | if (ACPI_FAILURE(status)) |
d550d98d | 533 | return -ENODEV; |
1da177e4 | 534 | |
50dd0969 | 535 | obj = buffer.pointer; |
1da177e4 LT |
536 | |
537 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
538 | *edid = obj; | |
539 | else { | |
6468463a | 540 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
541 | status = -EFAULT; |
542 | kfree(obj); | |
543 | } | |
544 | ||
d550d98d | 545 | return status; |
1da177e4 LT |
546 | } |
547 | ||
1da177e4 LT |
548 | /* bus */ |
549 | ||
550 | static int | |
4be44fcd | 551 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 552 | { |
4be44fcd LB |
553 | int status; |
554 | unsigned long tmp; | |
555 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
556 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 557 | |
1da177e4 LT |
558 | |
559 | arg0.integer.value = option; | |
560 | ||
90130268 | 561 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 562 | if (ACPI_SUCCESS(status)) |
4be44fcd | 563 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 564 | |
d550d98d | 565 | return status; |
1da177e4 LT |
566 | } |
567 | ||
568 | static int | |
4be44fcd | 569 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) |
1da177e4 LT |
570 | { |
571 | int status; | |
572 | ||
90130268 | 573 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 574 | |
d550d98d | 575 | return status; |
1da177e4 LT |
576 | } |
577 | ||
578 | static int | |
4be44fcd LB |
579 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
580 | unsigned long *options) | |
1da177e4 | 581 | { |
4be44fcd | 582 | int status; |
1da177e4 | 583 | |
90130268 | 584 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
585 | *options &= 3; |
586 | ||
d550d98d | 587 | return status; |
1da177e4 LT |
588 | } |
589 | ||
590 | /* | |
591 | * Arg: | |
592 | * video : video bus device pointer | |
593 | * bios_flag : | |
594 | * 0. The system BIOS should NOT automatically switch(toggle) | |
595 | * the active display output. | |
596 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 597 | * active display output. No switch event. |
1da177e4 LT |
598 | * 2. The _DGS value should be locked. |
599 | * 3. The system BIOS should not automatically switch (toggle) the | |
600 | * active display output, but instead generate the display switch | |
601 | * event notify code. | |
602 | * lcd_flag : | |
603 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 604 | * of the LCD when the power changes from AC to DC |
1da177e4 | 605 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 606 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
607 | * Return Value: |
608 | * -1 wrong arg. | |
609 | */ | |
610 | ||
611 | static int | |
4be44fcd | 612 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 613 | { |
4be44fcd LB |
614 | acpi_integer status = 0; |
615 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
616 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 617 | |
1da177e4 | 618 | |
4be44fcd | 619 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
620 | status = -1; |
621 | goto Failed; | |
622 | } | |
623 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
624 | video->dos_setting = arg0.integer.value; | |
90130268 | 625 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 626 | |
4be44fcd | 627 | Failed: |
d550d98d | 628 | return status; |
1da177e4 LT |
629 | } |
630 | ||
631 | /* | |
632 | * Arg: | |
633 | * device : video output device (LCD, CRT, ..) | |
634 | * | |
635 | * Return Value: | |
636 | * None | |
637 | * | |
98fb8fe1 | 638 | * Find out all required AML methods defined under the output |
1da177e4 LT |
639 | * device. |
640 | */ | |
641 | ||
4be44fcd | 642 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 643 | { |
1da177e4 LT |
644 | acpi_handle h_dummy1; |
645 | int i; | |
2f3d000a | 646 | u32 max_level = 0; |
1da177e4 LT |
647 | union acpi_object *obj = NULL; |
648 | struct acpi_video_device_brightness *br = NULL; | |
649 | ||
1da177e4 | 650 | |
98934def | 651 | memset(&device->cap, 0, sizeof(device->cap)); |
1da177e4 | 652 | |
90130268 | 653 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
654 | device->cap._ADR = 1; |
655 | } | |
90130268 | 656 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 657 | device->cap._BCL = 1; |
1da177e4 | 658 | } |
90130268 | 659 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 660 | device->cap._BCM = 1; |
1da177e4 | 661 | } |
2f3d000a YL |
662 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
663 | device->cap._BQC = 1; | |
90130268 | 664 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 665 | device->cap._DDC = 1; |
1da177e4 | 666 | } |
90130268 | 667 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
668 | device->cap._DCS = 1; |
669 | } | |
90130268 | 670 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
671 | device->cap._DGS = 1; |
672 | } | |
90130268 | 673 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
674 | device->cap._DSS = 1; |
675 | } | |
676 | ||
f70ac0e9 DK |
677 | if (ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { |
678 | ||
679 | if (obj->package.count >= 2) { | |
680 | int count = 0; | |
681 | union acpi_object *o; | |
682 | ||
683 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
684 | if (!br) { | |
685 | printk(KERN_ERR "can't allocate memory\n"); | |
1da177e4 | 686 | } else { |
f70ac0e9 DK |
687 | br->levels = kmalloc(obj->package.count * |
688 | sizeof *(br->levels), GFP_KERNEL); | |
689 | if (!br->levels) | |
690 | goto out; | |
691 | ||
692 | for (i = 0; i < obj->package.count; i++) { | |
693 | o = (union acpi_object *)&obj->package. | |
694 | elements[i]; | |
695 | if (o->type != ACPI_TYPE_INTEGER) { | |
696 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
697 | continue; | |
698 | } | |
699 | br->levels[count] = (u32) o->integer.value; | |
700 | ||
701 | if (br->levels[count] > max_level) | |
702 | max_level = br->levels[count]; | |
703 | count++; | |
704 | } | |
705 | out: | |
706 | if (count < 2) { | |
707 | kfree(br->levels); | |
708 | kfree(br); | |
709 | } else { | |
710 | br->count = count; | |
711 | device->brightness = br; | |
712 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
713 | "found %d brightness levels\n", | |
714 | count)); | |
715 | } | |
1da177e4 LT |
716 | } |
717 | } | |
f70ac0e9 DK |
718 | |
719 | } else { | |
720 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available LCD brightness level\n")); | |
1da177e4 LT |
721 | } |
722 | ||
d1dd0c23 | 723 | kfree(obj); |
1da177e4 | 724 | |
797de7bd | 725 | if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){ |
702ed512 | 726 | int result; |
2f3d000a YL |
727 | static int count = 0; |
728 | char *name; | |
2f3d000a YL |
729 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
730 | if (!name) | |
731 | return; | |
732 | ||
2f3d000a | 733 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 734 | device->backlight = backlight_device_register(name, |
599a52d1 | 735 | NULL, device, &acpi_backlight_ops); |
38531e6f MG |
736 | device->backlight->props.max_brightness = device->brightness->count-3; |
737 | device->backlight->props.brightness = acpi_video_get_brightness(device->backlight); | |
599a52d1 | 738 | backlight_update_status(device->backlight); |
2f3d000a | 739 | kfree(name); |
702ed512 ZR |
740 | |
741 | device->cdev = thermal_cooling_device_register("LCD", | |
742 | device->dev, &video_cooling_ops); | |
43ff39f2 TS |
743 | if (IS_ERR(device->cdev)) |
744 | return; | |
745 | ||
48d3d826 IM |
746 | if (device->cdev) { |
747 | printk(KERN_INFO PREFIX | |
748 | "%s is registered as cooling_device%d\n", | |
749 | device->dev->dev.bus_id, device->cdev->id); | |
750 | result = sysfs_create_link(&device->dev->dev.kobj, | |
751 | &device->cdev->device.kobj, | |
752 | "thermal_cooling"); | |
753 | if (result) | |
754 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
755 | result = sysfs_create_link(&device->cdev->device.kobj, | |
756 | &device->dev->dev.kobj, | |
757 | "device"); | |
758 | if (result) | |
759 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
760 | } | |
2f3d000a | 761 | } |
23b0f015 LY |
762 | if (device->cap._DCS && device->cap._DSS){ |
763 | static int count = 0; | |
764 | char *name; | |
765 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
766 | if (!name) | |
767 | return; | |
768 | sprintf(name, "acpi_video%d", count++); | |
769 | device->output_dev = video_output_register(name, | |
770 | NULL, device, &acpi_output_properties); | |
771 | kfree(name); | |
772 | } | |
d550d98d | 773 | return; |
1da177e4 LT |
774 | } |
775 | ||
776 | /* | |
777 | * Arg: | |
778 | * device : video output device (VGA) | |
779 | * | |
780 | * Return Value: | |
781 | * None | |
782 | * | |
98fb8fe1 | 783 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
784 | */ |
785 | ||
4be44fcd | 786 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 787 | { |
4be44fcd | 788 | acpi_handle h_dummy1; |
1da177e4 | 789 | |
98934def | 790 | memset(&video->cap, 0, sizeof(video->cap)); |
90130268 | 791 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
792 | video->cap._DOS = 1; |
793 | } | |
90130268 | 794 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
795 | video->cap._DOD = 1; |
796 | } | |
90130268 | 797 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
798 | video->cap._ROM = 1; |
799 | } | |
90130268 | 800 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
801 | video->cap._GPD = 1; |
802 | } | |
90130268 | 803 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
804 | video->cap._SPD = 1; |
805 | } | |
90130268 | 806 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
807 | video->cap._VPO = 1; |
808 | } | |
809 | } | |
810 | ||
811 | /* | |
812 | * Check whether the video bus device has required AML method to | |
813 | * support the desired features | |
814 | */ | |
815 | ||
4be44fcd | 816 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 817 | { |
4be44fcd | 818 | acpi_status status = -ENOENT; |
f0d6752c | 819 | |
1da177e4 LT |
820 | |
821 | if (!video) | |
d550d98d | 822 | return -EINVAL; |
1da177e4 LT |
823 | |
824 | /* Since there is no HID, CID and so on for VGA driver, we have | |
825 | * to check well known required nodes. | |
826 | */ | |
827 | ||
98fb8fe1 | 828 | /* Does this device support video switching? */ |
4be44fcd | 829 | if (video->cap._DOS) { |
1da177e4 LT |
830 | video->flags.multihead = 1; |
831 | status = 0; | |
832 | } | |
833 | ||
98fb8fe1 | 834 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 835 | if (video->cap._ROM) { |
1da177e4 LT |
836 | video->flags.rom = 1; |
837 | status = 0; | |
838 | } | |
839 | ||
98fb8fe1 | 840 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 841 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
842 | video->flags.post = 1; |
843 | status = 0; | |
844 | } | |
845 | ||
d550d98d | 846 | return status; |
1da177e4 LT |
847 | } |
848 | ||
849 | /* -------------------------------------------------------------------------- | |
850 | FS Interface (/proc) | |
851 | -------------------------------------------------------------------------- */ | |
852 | ||
4be44fcd | 853 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
854 | |
855 | /* video devices */ | |
856 | ||
4be44fcd | 857 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 858 | { |
50dd0969 | 859 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 860 | |
1da177e4 LT |
861 | |
862 | if (!dev) | |
863 | goto end; | |
864 | ||
865 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
866 | seq_printf(seq, "type: "); | |
867 | if (dev->flags.crt) | |
868 | seq_printf(seq, "CRT\n"); | |
869 | else if (dev->flags.lcd) | |
870 | seq_printf(seq, "LCD\n"); | |
871 | else if (dev->flags.tvout) | |
872 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
873 | else if (dev->flags.dvi) |
874 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
875 | else |
876 | seq_printf(seq, "UNKNOWN\n"); | |
877 | ||
4be44fcd | 878 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 879 | |
4be44fcd | 880 | end: |
d550d98d | 881 | return 0; |
1da177e4 LT |
882 | } |
883 | ||
884 | static int | |
4be44fcd | 885 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
886 | { |
887 | return single_open(file, acpi_video_device_info_seq_show, | |
888 | PDE(inode)->data); | |
889 | } | |
890 | ||
4be44fcd | 891 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 892 | { |
4be44fcd | 893 | int status; |
50dd0969 | 894 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 895 | unsigned long state; |
1da177e4 | 896 | |
1da177e4 LT |
897 | |
898 | if (!dev) | |
899 | goto end; | |
900 | ||
901 | status = acpi_video_device_get_state(dev, &state); | |
902 | seq_printf(seq, "state: "); | |
903 | if (ACPI_SUCCESS(status)) | |
904 | seq_printf(seq, "0x%02lx\n", state); | |
905 | else | |
906 | seq_printf(seq, "<not supported>\n"); | |
907 | ||
908 | status = acpi_video_device_query(dev, &state); | |
909 | seq_printf(seq, "query: "); | |
910 | if (ACPI_SUCCESS(status)) | |
911 | seq_printf(seq, "0x%02lx\n", state); | |
912 | else | |
913 | seq_printf(seq, "<not supported>\n"); | |
914 | ||
4be44fcd | 915 | end: |
d550d98d | 916 | return 0; |
1da177e4 LT |
917 | } |
918 | ||
919 | static int | |
4be44fcd | 920 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
921 | { |
922 | return single_open(file, acpi_video_device_state_seq_show, | |
923 | PDE(inode)->data); | |
924 | } | |
925 | ||
926 | static ssize_t | |
4be44fcd LB |
927 | acpi_video_device_write_state(struct file *file, |
928 | const char __user * buffer, | |
929 | size_t count, loff_t * data) | |
1da177e4 | 930 | { |
4be44fcd | 931 | int status; |
50dd0969 JE |
932 | struct seq_file *m = file->private_data; |
933 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
934 | char str[12] = { 0 }; |
935 | u32 state = 0; | |
1da177e4 | 936 | |
1da177e4 LT |
937 | |
938 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 939 | return -EINVAL; |
1da177e4 LT |
940 | |
941 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 942 | return -EFAULT; |
1da177e4 LT |
943 | |
944 | str[count] = 0; | |
945 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 946 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
947 | |
948 | status = acpi_video_device_set_state(dev, state); | |
949 | ||
950 | if (status) | |
d550d98d | 951 | return -EFAULT; |
1da177e4 | 952 | |
d550d98d | 953 | return count; |
1da177e4 LT |
954 | } |
955 | ||
956 | static int | |
4be44fcd | 957 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 958 | { |
50dd0969 | 959 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 960 | int i; |
1da177e4 | 961 | |
1da177e4 LT |
962 | |
963 | if (!dev || !dev->brightness) { | |
964 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 965 | return 0; |
1da177e4 LT |
966 | } |
967 | ||
968 | seq_printf(seq, "levels: "); | |
969 | for (i = 0; i < dev->brightness->count; i++) | |
970 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
971 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
972 | ||
d550d98d | 973 | return 0; |
1da177e4 LT |
974 | } |
975 | ||
976 | static int | |
4be44fcd | 977 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
978 | { |
979 | return single_open(file, acpi_video_device_brightness_seq_show, | |
980 | PDE(inode)->data); | |
981 | } | |
982 | ||
983 | static ssize_t | |
4be44fcd LB |
984 | acpi_video_device_write_brightness(struct file *file, |
985 | const char __user * buffer, | |
986 | size_t count, loff_t * data) | |
1da177e4 | 987 | { |
50dd0969 JE |
988 | struct seq_file *m = file->private_data; |
989 | struct acpi_video_device *dev = m->private; | |
c88c5786 | 990 | char str[5] = { 0 }; |
4be44fcd LB |
991 | unsigned int level = 0; |
992 | int i; | |
1da177e4 | 993 | |
1da177e4 | 994 | |
59d399d3 | 995 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 996 | return -EINVAL; |
1da177e4 LT |
997 | |
998 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 999 | return -EFAULT; |
1da177e4 LT |
1000 | |
1001 | str[count] = 0; | |
1002 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1003 | |
1da177e4 | 1004 | if (level > 100) |
d550d98d | 1005 | return -EFAULT; |
1da177e4 | 1006 | |
98fb8fe1 | 1007 | /* validate through the list of available levels */ |
1da177e4 LT |
1008 | for (i = 0; i < dev->brightness->count; i++) |
1009 | if (level == dev->brightness->levels[i]) { | |
4be44fcd LB |
1010 | if (ACPI_SUCCESS |
1011 | (acpi_video_device_lcd_set_level(dev, level))) | |
1da177e4 LT |
1012 | dev->brightness->curr = level; |
1013 | break; | |
1014 | } | |
1015 | ||
d550d98d | 1016 | return count; |
1da177e4 LT |
1017 | } |
1018 | ||
4be44fcd | 1019 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1020 | { |
50dd0969 | 1021 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
1022 | int status; |
1023 | int i; | |
1024 | union acpi_object *edid = NULL; | |
1da177e4 | 1025 | |
1da177e4 LT |
1026 | |
1027 | if (!dev) | |
1028 | goto out; | |
1029 | ||
4be44fcd | 1030 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 1031 | if (ACPI_FAILURE(status)) { |
4be44fcd | 1032 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
1033 | } |
1034 | ||
1035 | if (ACPI_FAILURE(status)) { | |
1036 | goto out; | |
1037 | } | |
1038 | ||
1039 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
1040 | for (i = 0; i < edid->buffer.length; i++) | |
1041 | seq_putc(seq, edid->buffer.pointer[i]); | |
1042 | } | |
1043 | ||
4be44fcd | 1044 | out: |
1da177e4 LT |
1045 | if (!edid) |
1046 | seq_printf(seq, "<not supported>\n"); | |
1047 | else | |
1048 | kfree(edid); | |
1049 | ||
d550d98d | 1050 | return 0; |
1da177e4 LT |
1051 | } |
1052 | ||
1053 | static int | |
4be44fcd | 1054 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1055 | { |
1056 | return single_open(file, acpi_video_device_EDID_seq_show, | |
1057 | PDE(inode)->data); | |
1058 | } | |
1059 | ||
4be44fcd | 1060 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 1061 | { |
4be44fcd | 1062 | struct proc_dir_entry *entry = NULL; |
1da177e4 LT |
1063 | struct acpi_video_device *vid_dev; |
1064 | ||
1da177e4 LT |
1065 | |
1066 | if (!device) | |
d550d98d | 1067 | return -ENODEV; |
1da177e4 | 1068 | |
50dd0969 | 1069 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1070 | if (!vid_dev) |
d550d98d | 1071 | return -ENODEV; |
1da177e4 LT |
1072 | |
1073 | if (!acpi_device_dir(device)) { | |
1074 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1075 | vid_dev->video->dir); |
1da177e4 | 1076 | if (!acpi_device_dir(device)) |
d550d98d | 1077 | return -ENODEV; |
1da177e4 LT |
1078 | acpi_device_dir(device)->owner = THIS_MODULE; |
1079 | } | |
1080 | ||
1081 | /* 'info' [R] */ | |
cf7acfab DL |
1082 | entry = proc_create_data("info", S_IRUGO, acpi_device_dir(device), |
1083 | &acpi_video_device_info_fops, acpi_driver_data(device)); | |
1da177e4 | 1084 | if (!entry) |
d550d98d | 1085 | return -ENODEV; |
1da177e4 LT |
1086 | |
1087 | /* 'state' [R/W] */ | |
cf7acfab DL |
1088 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1089 | entry = proc_create_data("state", S_IFREG | S_IRUGO | S_IWUSR, | |
1090 | acpi_device_dir(device), | |
1091 | &acpi_video_device_state_fops, | |
1092 | acpi_driver_data(device)); | |
1da177e4 | 1093 | if (!entry) |
d550d98d | 1094 | return -ENODEV; |
1da177e4 LT |
1095 | |
1096 | /* 'brightness' [R/W] */ | |
cf7acfab DL |
1097 | acpi_video_device_brightness_fops.write = |
1098 | acpi_video_device_write_brightness; | |
1099 | entry = proc_create_data("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
1100 | acpi_device_dir(device), | |
1101 | &acpi_video_device_brightness_fops, | |
1102 | acpi_driver_data(device)); | |
1da177e4 | 1103 | if (!entry) |
d550d98d | 1104 | return -ENODEV; |
1da177e4 LT |
1105 | |
1106 | /* 'EDID' [R] */ | |
cf7acfab DL |
1107 | entry = proc_create_data("EDID", S_IRUGO, acpi_device_dir(device), |
1108 | &acpi_video_device_EDID_fops, | |
1109 | acpi_driver_data(device)); | |
1da177e4 | 1110 | if (!entry) |
d550d98d | 1111 | return -ENODEV; |
d550d98d | 1112 | return 0; |
1da177e4 LT |
1113 | } |
1114 | ||
4be44fcd | 1115 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1116 | { |
1117 | struct acpi_video_device *vid_dev; | |
1da177e4 | 1118 | |
50dd0969 | 1119 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1120 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 1121 | return -ENODEV; |
1da177e4 LT |
1122 | |
1123 | if (acpi_device_dir(device)) { | |
1124 | remove_proc_entry("info", acpi_device_dir(device)); | |
1125 | remove_proc_entry("state", acpi_device_dir(device)); | |
1126 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
1127 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
4be44fcd | 1128 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1129 | acpi_device_dir(device) = NULL; |
1130 | } | |
1131 | ||
d550d98d | 1132 | return 0; |
1da177e4 LT |
1133 | } |
1134 | ||
1da177e4 | 1135 | /* video bus */ |
4be44fcd | 1136 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1137 | { |
50dd0969 | 1138 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1139 | |
1da177e4 LT |
1140 | |
1141 | if (!video) | |
1142 | goto end; | |
1143 | ||
1144 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1145 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1146 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1147 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1148 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1149 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1150 | |
4be44fcd | 1151 | end: |
d550d98d | 1152 | return 0; |
1da177e4 LT |
1153 | } |
1154 | ||
4be44fcd | 1155 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1156 | { |
4be44fcd LB |
1157 | return single_open(file, acpi_video_bus_info_seq_show, |
1158 | PDE(inode)->data); | |
1da177e4 LT |
1159 | } |
1160 | ||
4be44fcd | 1161 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1162 | { |
50dd0969 | 1163 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1164 | |
1da177e4 LT |
1165 | |
1166 | if (!video) | |
1167 | goto end; | |
1168 | ||
96b2dd1f | 1169 | printk(KERN_INFO PREFIX "Please implement %s\n", __func__); |
1da177e4 LT |
1170 | seq_printf(seq, "<TODO>\n"); |
1171 | ||
4be44fcd | 1172 | end: |
d550d98d | 1173 | return 0; |
1da177e4 LT |
1174 | } |
1175 | ||
4be44fcd | 1176 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1177 | { |
1178 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1179 | } | |
1180 | ||
4be44fcd | 1181 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1182 | { |
50dd0969 | 1183 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1184 | unsigned long options; |
1185 | int status; | |
1da177e4 | 1186 | |
1da177e4 LT |
1187 | |
1188 | if (!video) | |
1189 | goto end; | |
1190 | ||
1191 | status = acpi_video_bus_POST_options(video, &options); | |
1192 | if (ACPI_SUCCESS(status)) { | |
1193 | if (!(options & 1)) { | |
4be44fcd LB |
1194 | printk(KERN_WARNING PREFIX |
1195 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1196 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1197 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 LT |
1198 | } |
1199 | printk("%lx\n", options); | |
98fb8fe1 | 1200 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1201 | if (options & 2) |
1202 | seq_printf(seq, " <PCI video>"); | |
1203 | if (options & 4) | |
1204 | seq_printf(seq, " <AGP video>"); | |
1205 | seq_putc(seq, '\n'); | |
1206 | } else | |
1207 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1208 | end: |
d550d98d | 1209 | return 0; |
1da177e4 LT |
1210 | } |
1211 | ||
1212 | static int | |
4be44fcd | 1213 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1214 | { |
4be44fcd LB |
1215 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1216 | PDE(inode)->data); | |
1da177e4 LT |
1217 | } |
1218 | ||
4be44fcd | 1219 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1220 | { |
50dd0969 | 1221 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1222 | int status; |
1223 | unsigned long id; | |
1da177e4 | 1224 | |
1da177e4 LT |
1225 | |
1226 | if (!video) | |
1227 | goto end; | |
1228 | ||
4be44fcd | 1229 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1230 | if (!ACPI_SUCCESS(status)) { |
1231 | seq_printf(seq, "<not supported>\n"); | |
1232 | goto end; | |
1233 | } | |
98fb8fe1 | 1234 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1235 | |
4be44fcd | 1236 | end: |
d550d98d | 1237 | return 0; |
1da177e4 LT |
1238 | } |
1239 | ||
4be44fcd | 1240 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1241 | { |
50dd0969 | 1242 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1243 | |
1da177e4 | 1244 | |
4be44fcd | 1245 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1246 | |
d550d98d | 1247 | return 0; |
1da177e4 LT |
1248 | } |
1249 | ||
4be44fcd | 1250 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1251 | { |
4be44fcd LB |
1252 | return single_open(file, acpi_video_bus_POST_seq_show, |
1253 | PDE(inode)->data); | |
1da177e4 LT |
1254 | } |
1255 | ||
4be44fcd | 1256 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1257 | { |
1258 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1259 | } | |
1260 | ||
1261 | static ssize_t | |
4be44fcd LB |
1262 | acpi_video_bus_write_POST(struct file *file, |
1263 | const char __user * buffer, | |
1264 | size_t count, loff_t * data) | |
1da177e4 | 1265 | { |
4be44fcd | 1266 | int status; |
50dd0969 JE |
1267 | struct seq_file *m = file->private_data; |
1268 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1269 | char str[12] = { 0 }; |
1270 | unsigned long opt, options; | |
1da177e4 | 1271 | |
1da177e4 | 1272 | |
1da177e4 | 1273 | if (!video || count + 1 > sizeof str) |
d550d98d | 1274 | return -EINVAL; |
1da177e4 LT |
1275 | |
1276 | status = acpi_video_bus_POST_options(video, &options); | |
1277 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1278 | return -EINVAL; |
1da177e4 LT |
1279 | |
1280 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1281 | return -EFAULT; |
1da177e4 LT |
1282 | |
1283 | str[count] = 0; | |
1284 | opt = strtoul(str, NULL, 0); | |
1285 | if (opt > 3) | |
d550d98d | 1286 | return -EFAULT; |
1da177e4 | 1287 | |
98fb8fe1 | 1288 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1289 | options |= 1; |
1290 | ||
1291 | if (options & (1ul << opt)) { | |
4be44fcd | 1292 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1293 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1294 | return -EFAULT; |
1da177e4 LT |
1295 | |
1296 | } | |
1297 | ||
d550d98d | 1298 | return count; |
1da177e4 LT |
1299 | } |
1300 | ||
1301 | static ssize_t | |
4be44fcd LB |
1302 | acpi_video_bus_write_DOS(struct file *file, |
1303 | const char __user * buffer, | |
1304 | size_t count, loff_t * data) | |
1da177e4 | 1305 | { |
4be44fcd | 1306 | int status; |
50dd0969 JE |
1307 | struct seq_file *m = file->private_data; |
1308 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1309 | char str[12] = { 0 }; |
1310 | unsigned long opt; | |
1da177e4 | 1311 | |
1da177e4 | 1312 | |
1da177e4 | 1313 | if (!video || count + 1 > sizeof str) |
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 > 7) | |
d550d98d | 1322 | return -EFAULT; |
1da177e4 | 1323 | |
4be44fcd | 1324 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1325 | |
1326 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1327 | return -EFAULT; |
1da177e4 | 1328 | |
d550d98d | 1329 | return count; |
1da177e4 LT |
1330 | } |
1331 | ||
4be44fcd | 1332 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1333 | { |
4be44fcd LB |
1334 | struct proc_dir_entry *entry = NULL; |
1335 | struct acpi_video_bus *video; | |
1da177e4 | 1336 | |
1da177e4 | 1337 | |
50dd0969 | 1338 | video = acpi_driver_data(device); |
1da177e4 LT |
1339 | |
1340 | if (!acpi_device_dir(device)) { | |
1341 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1342 | acpi_video_dir); |
1da177e4 | 1343 | if (!acpi_device_dir(device)) |
d550d98d | 1344 | return -ENODEV; |
1da177e4 LT |
1345 | video->dir = acpi_device_dir(device); |
1346 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1347 | } | |
1348 | ||
1349 | /* 'info' [R] */ | |
cf7acfab DL |
1350 | entry = proc_create_data("info", S_IRUGO, acpi_device_dir(device), |
1351 | &acpi_video_bus_info_fops, | |
1352 | acpi_driver_data(device)); | |
1da177e4 | 1353 | if (!entry) |
d550d98d | 1354 | return -ENODEV; |
1da177e4 LT |
1355 | |
1356 | /* 'ROM' [R] */ | |
cf7acfab DL |
1357 | entry = proc_create_data("ROM", S_IRUGO, acpi_device_dir(device), |
1358 | &acpi_video_bus_ROM_fops, | |
1359 | acpi_driver_data(device)); | |
1da177e4 | 1360 | if (!entry) |
d550d98d | 1361 | return -ENODEV; |
1da177e4 LT |
1362 | |
1363 | /* 'POST_info' [R] */ | |
cf7acfab DL |
1364 | entry = proc_create_data("POST_info", S_IRUGO, acpi_device_dir(device), |
1365 | &acpi_video_bus_POST_info_fops, | |
1366 | acpi_driver_data(device)); | |
1da177e4 | 1367 | if (!entry) |
d550d98d | 1368 | return -ENODEV; |
1da177e4 LT |
1369 | |
1370 | /* 'POST' [R/W] */ | |
cf7acfab DL |
1371 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
1372 | entry = proc_create_data("POST", S_IFREG | S_IRUGO | S_IRUSR, | |
1373 | acpi_device_dir(device), | |
1374 | &acpi_video_bus_POST_fops, | |
1375 | acpi_driver_data(device)); | |
1da177e4 | 1376 | if (!entry) |
d550d98d | 1377 | return -ENODEV; |
1da177e4 LT |
1378 | |
1379 | /* 'DOS' [R/W] */ | |
cf7acfab DL |
1380 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
1381 | entry = proc_create_data("DOS", S_IFREG | S_IRUGO | S_IRUSR, | |
1382 | acpi_device_dir(device), | |
1383 | &acpi_video_bus_DOS_fops, | |
1384 | acpi_driver_data(device)); | |
1da177e4 | 1385 | if (!entry) |
d550d98d | 1386 | return -ENODEV; |
1da177e4 | 1387 | |
d550d98d | 1388 | return 0; |
1da177e4 LT |
1389 | } |
1390 | ||
4be44fcd | 1391 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1392 | { |
4be44fcd | 1393 | struct acpi_video_bus *video; |
1da177e4 | 1394 | |
1da177e4 | 1395 | |
50dd0969 | 1396 | video = acpi_driver_data(device); |
1da177e4 LT |
1397 | |
1398 | if (acpi_device_dir(device)) { | |
1399 | remove_proc_entry("info", acpi_device_dir(device)); | |
1400 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1401 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1402 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1403 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
4be44fcd | 1404 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1405 | acpi_device_dir(device) = NULL; |
1406 | } | |
1407 | ||
d550d98d | 1408 | return 0; |
1da177e4 LT |
1409 | } |
1410 | ||
1411 | /* -------------------------------------------------------------------------- | |
1412 | Driver Interface | |
1413 | -------------------------------------------------------------------------- */ | |
1414 | ||
1415 | /* device interface */ | |
82cae999 RZ |
1416 | static struct acpi_video_device_attrib* |
1417 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1418 | { | |
1419 | int count; | |
1420 | ||
1421 | for(count = 0; count < video->attached_count; count++) | |
1422 | if((video->attached_array[count].value.int_val & 0xffff) == device_id) | |
1423 | return &(video->attached_array[count].value.attrib); | |
1424 | return NULL; | |
1425 | } | |
1da177e4 LT |
1426 | |
1427 | static int | |
4be44fcd LB |
1428 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1429 | struct acpi_video_bus *video) | |
1da177e4 | 1430 | { |
4be44fcd | 1431 | unsigned long device_id; |
973bf491 | 1432 | int status; |
4be44fcd | 1433 | struct acpi_video_device *data; |
82cae999 | 1434 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1435 | |
1436 | if (!device || !video) | |
d550d98d | 1437 | return -EINVAL; |
1da177e4 | 1438 | |
4be44fcd LB |
1439 | status = |
1440 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1441 | if (ACPI_SUCCESS(status)) { |
1442 | ||
36bcbec7 | 1443 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1444 | if (!data) |
d550d98d | 1445 | return -ENOMEM; |
1da177e4 | 1446 | |
1da177e4 LT |
1447 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1448 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1449 | acpi_driver_data(device) = data; | |
1450 | ||
1451 | data->device_id = device_id; | |
1452 | data->video = video; | |
1453 | data->dev = device; | |
1454 | ||
82cae999 RZ |
1455 | attribute = acpi_video_get_device_attr(video, device_id); |
1456 | ||
1457 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1458 | switch (attribute->display_type) { | |
1459 | case ACPI_VIDEO_DISPLAY_CRT: | |
1460 | data->flags.crt = 1; | |
1461 | break; | |
1462 | case ACPI_VIDEO_DISPLAY_TV: | |
1463 | data->flags.tvout = 1; | |
1464 | break; | |
1465 | case ACPI_VIDEO_DISPLAY_DVI: | |
1466 | data->flags.dvi = 1; | |
1467 | break; | |
1468 | case ACPI_VIDEO_DISPLAY_LCD: | |
1469 | data->flags.lcd = 1; | |
1470 | break; | |
1471 | default: | |
1472 | data->flags.unknown = 1; | |
1473 | break; | |
1474 | } | |
1475 | if(attribute->bios_can_detect) | |
1476 | data->flags.bios = 1; | |
1477 | } else | |
1da177e4 | 1478 | data->flags.unknown = 1; |
4be44fcd | 1479 | |
1da177e4 LT |
1480 | acpi_video_device_bind(video, data); |
1481 | acpi_video_device_find_cap(data); | |
1482 | ||
90130268 | 1483 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1484 | ACPI_DEVICE_NOTIFY, |
1485 | acpi_video_device_notify, | |
1486 | data); | |
1da177e4 LT |
1487 | if (ACPI_FAILURE(status)) { |
1488 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1489 | "Error installing notify handler\n")); |
973bf491 YL |
1490 | if(data->brightness) |
1491 | kfree(data->brightness->levels); | |
1492 | kfree(data->brightness); | |
1493 | kfree(data); | |
1494 | return -ENODEV; | |
1da177e4 LT |
1495 | } |
1496 | ||
bbac81f5 | 1497 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1498 | list_add_tail(&data->entry, &video->video_device_list); |
bbac81f5 | 1499 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1500 | |
1501 | acpi_video_device_add_fs(device); | |
1502 | ||
d550d98d | 1503 | return 0; |
1da177e4 LT |
1504 | } |
1505 | ||
d550d98d | 1506 | return -ENOENT; |
1da177e4 LT |
1507 | } |
1508 | ||
1509 | /* | |
1510 | * Arg: | |
1511 | * video : video bus device | |
1512 | * | |
1513 | * Return: | |
1514 | * none | |
1515 | * | |
1516 | * Enumerate the video device list of the video bus, | |
1517 | * bind the ids with the corresponding video devices | |
1518 | * under the video bus. | |
4be44fcd | 1519 | */ |
1da177e4 | 1520 | |
4be44fcd | 1521 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1522 | { |
ff102ea9 DT |
1523 | struct acpi_video_device *dev; |
1524 | ||
bbac81f5 | 1525 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1526 | |
1527 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1528 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1529 | |
bbac81f5 | 1530 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1531 | } |
1532 | ||
1533 | /* | |
1534 | * Arg: | |
1535 | * video : video bus device | |
1536 | * device : video output device under the video | |
1537 | * bus | |
1538 | * | |
1539 | * Return: | |
1540 | * none | |
1541 | * | |
1542 | * Bind the ids with the corresponding video devices | |
1543 | * under the video bus. | |
4be44fcd | 1544 | */ |
1da177e4 LT |
1545 | |
1546 | static void | |
4be44fcd LB |
1547 | acpi_video_device_bind(struct acpi_video_bus *video, |
1548 | struct acpi_video_device *device) | |
1da177e4 | 1549 | { |
4be44fcd | 1550 | int i; |
1da177e4 LT |
1551 | |
1552 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1553 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
4be44fcd LB |
1554 | |
1555 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1556 | i < video->attached_count; i++) { | |
1557 | if (device->device_id == (IDS_VAL(i) & 0xffff)) { | |
1da177e4 LT |
1558 | IDS_BIND(i) = device; |
1559 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1560 | } | |
1561 | } | |
1562 | #undef IDS_VAL | |
1563 | #undef IDS_BIND | |
1564 | } | |
1565 | ||
1566 | /* | |
1567 | * Arg: | |
1568 | * video : video bus device | |
1569 | * | |
1570 | * Return: | |
1571 | * < 0 : error | |
1572 | * | |
1573 | * Call _DOD to enumerate all devices attached to display adapter | |
1574 | * | |
4be44fcd | 1575 | */ |
1da177e4 LT |
1576 | |
1577 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1578 | { | |
4be44fcd LB |
1579 | int status; |
1580 | int count; | |
1581 | int i; | |
1da177e4 | 1582 | struct acpi_video_enumerated_device *active_device_list; |
4be44fcd LB |
1583 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1584 | union acpi_object *dod = NULL; | |
1585 | union acpi_object *obj; | |
1da177e4 | 1586 | |
90130268 | 1587 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1588 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1589 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1590 | return status; |
1da177e4 LT |
1591 | } |
1592 | ||
50dd0969 | 1593 | dod = buffer.pointer; |
1da177e4 | 1594 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1595 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1596 | status = -EFAULT; |
1597 | goto out; | |
1598 | } | |
1599 | ||
1600 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1601 | dod->package.count)); |
1da177e4 | 1602 | |
4be44fcd LB |
1603 | active_device_list = kmalloc((1 + |
1604 | dod->package.count) * | |
1605 | sizeof(struct | |
1606 | acpi_video_enumerated_device), | |
1607 | GFP_KERNEL); | |
1da177e4 LT |
1608 | |
1609 | if (!active_device_list) { | |
1610 | status = -ENOMEM; | |
1611 | goto out; | |
1612 | } | |
1613 | ||
1614 | count = 0; | |
1615 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1616 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1617 | |
1618 | if (obj->type != ACPI_TYPE_INTEGER) { | |
6468463a | 1619 | printk(KERN_ERR PREFIX "Invalid _DOD data\n"); |
4be44fcd LB |
1620 | active_device_list[i].value.int_val = |
1621 | ACPI_VIDEO_HEAD_INVALID; | |
1da177e4 LT |
1622 | } |
1623 | active_device_list[i].value.int_val = obj->integer.value; | |
1624 | active_device_list[i].bind_info = NULL; | |
4be44fcd LB |
1625 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1626 | (int)obj->integer.value)); | |
1da177e4 LT |
1627 | count++; |
1628 | } | |
1629 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1630 | ||
6044ec88 | 1631 | kfree(video->attached_array); |
4be44fcd | 1632 | |
1da177e4 LT |
1633 | video->attached_array = active_device_list; |
1634 | video->attached_count = count; | |
4be44fcd | 1635 | out: |
02438d87 | 1636 | kfree(buffer.pointer); |
d550d98d | 1637 | return status; |
1da177e4 LT |
1638 | } |
1639 | ||
4be44fcd LB |
1640 | static int |
1641 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1642 | u32 level_current, u32 event) | |
1da177e4 | 1643 | { |
63f0edfc | 1644 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
1645 | max = max_below = 0; |
1646 | min = min_above = 255; | |
63f0edfc AS |
1647 | /* Find closest level to level_current */ |
1648 | for (i = 0; i < device->brightness->count; i++) { | |
1649 | l = device->brightness->levels[i]; | |
1650 | if (abs(l - level_current) < abs(delta)) { | |
1651 | delta = l - level_current; | |
1652 | if (!delta) | |
1653 | break; | |
1654 | } | |
1655 | } | |
1656 | /* Ajust level_current to closest available level */ | |
1657 | level_current += delta; | |
f4715189 TT |
1658 | for (i = 0; i < device->brightness->count; i++) { |
1659 | l = device->brightness->levels[i]; | |
1660 | if (l < min) | |
1661 | min = l; | |
1662 | if (l > max) | |
1663 | max = l; | |
1664 | if (l < min_above && l > level_current) | |
1665 | min_above = l; | |
1666 | if (l > max_below && l < level_current) | |
1667 | max_below = l; | |
1668 | } | |
1669 | ||
1670 | switch (event) { | |
1671 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1672 | return (level_current < max) ? min_above : min; | |
1673 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1674 | return (level_current < max) ? min_above : max; | |
1675 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1676 | return (level_current > min) ? max_below : min; | |
1677 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1678 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1679 | return 0; | |
1680 | default: | |
1681 | return level_current; | |
1682 | } | |
1da177e4 LT |
1683 | } |
1684 | ||
1da177e4 | 1685 | static void |
4be44fcd | 1686 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 LT |
1687 | { |
1688 | unsigned long level_current, level_next; | |
1689 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1690 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1691 | acpi_video_device_lcd_set_level(device, level_next); | |
1692 | } | |
1693 | ||
1694 | static int | |
4be44fcd LB |
1695 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1696 | struct acpi_device *device) | |
1da177e4 | 1697 | { |
4be44fcd | 1698 | int status = 0; |
ff102ea9 | 1699 | struct acpi_device *dev; |
1da177e4 LT |
1700 | |
1701 | acpi_video_device_enumerate(video); | |
1702 | ||
ff102ea9 | 1703 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
1704 | |
1705 | status = acpi_video_bus_get_one_device(dev, video); | |
1706 | if (ACPI_FAILURE(status)) { | |
a6fc6720 | 1707 | ACPI_EXCEPTION((AE_INFO, status, "Cant attach device")); |
1da177e4 LT |
1708 | continue; |
1709 | } | |
1da177e4 | 1710 | } |
d550d98d | 1711 | return status; |
1da177e4 LT |
1712 | } |
1713 | ||
4be44fcd | 1714 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1715 | { |
031ec77b | 1716 | acpi_status status; |
1da177e4 LT |
1717 | struct acpi_video_bus *video; |
1718 | ||
1da177e4 LT |
1719 | |
1720 | if (!device || !device->video) | |
d550d98d | 1721 | return -ENOENT; |
1da177e4 LT |
1722 | |
1723 | video = device->video; | |
1724 | ||
1da177e4 LT |
1725 | acpi_video_device_remove_fs(device->dev); |
1726 | ||
90130268 | 1727 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1728 | ACPI_DEVICE_NOTIFY, |
1729 | acpi_video_device_notify); | |
599a52d1 | 1730 | backlight_device_unregister(device->backlight); |
702ed512 ZR |
1731 | if (device->cdev) { |
1732 | sysfs_remove_link(&device->dev->dev.kobj, | |
1733 | "thermal_cooling"); | |
1734 | sysfs_remove_link(&device->cdev->device.kobj, | |
1735 | "device"); | |
1736 | thermal_cooling_device_unregister(device->cdev); | |
1737 | device->cdev = NULL; | |
1738 | } | |
23b0f015 | 1739 | video_output_unregister(device->output_dev); |
ff102ea9 | 1740 | |
d550d98d | 1741 | return 0; |
1da177e4 LT |
1742 | } |
1743 | ||
4be44fcd | 1744 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1745 | { |
4be44fcd | 1746 | int status; |
ff102ea9 | 1747 | struct acpi_video_device *dev, *next; |
1da177e4 | 1748 | |
bbac81f5 | 1749 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1750 | |
ff102ea9 | 1751 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 1752 | |
ff102ea9 | 1753 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
1754 | if (ACPI_FAILURE(status)) |
1755 | printk(KERN_WARNING PREFIX | |
1756 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1757 | |
ff102ea9 DT |
1758 | if (dev->brightness) { |
1759 | kfree(dev->brightness->levels); | |
1760 | kfree(dev->brightness); | |
1761 | } | |
1762 | list_del(&dev->entry); | |
1763 | kfree(dev); | |
1da177e4 LT |
1764 | } |
1765 | ||
bbac81f5 | 1766 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1767 | |
d550d98d | 1768 | return 0; |
1da177e4 LT |
1769 | } |
1770 | ||
1771 | /* acpi_video interface */ | |
1772 | ||
4be44fcd | 1773 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 1774 | { |
a21101c4 | 1775 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
1776 | } |
1777 | ||
4be44fcd | 1778 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1779 | { |
1780 | return acpi_video_bus_DOS(video, 0, 1); | |
1781 | } | |
1782 | ||
4be44fcd | 1783 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1784 | { |
50dd0969 | 1785 | struct acpi_video_bus *video = data; |
4be44fcd | 1786 | struct acpi_device *device = NULL; |
e9dab196 LY |
1787 | struct input_dev *input; |
1788 | int keycode; | |
1789 | ||
1da177e4 | 1790 | if (!video) |
d550d98d | 1791 | return; |
1da177e4 | 1792 | |
e6afa0de | 1793 | device = video->device; |
e9dab196 | 1794 | input = video->input; |
1da177e4 LT |
1795 | |
1796 | switch (event) { | |
98fb8fe1 | 1797 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 1798 | * most likely via hotkey. */ |
14e04fb3 | 1799 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1800 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1801 | break; |
1802 | ||
98fb8fe1 | 1803 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1804 | * connector. */ |
1805 | acpi_video_device_enumerate(video); | |
1806 | acpi_video_device_rebind(video); | |
14e04fb3 | 1807 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1808 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1809 | break; |
1810 | ||
4be44fcd | 1811 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
25c87f7f | 1812 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1813 | keycode = KEY_SWITCHVIDEOMODE; |
1814 | break; | |
4be44fcd | 1815 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
25c87f7f | 1816 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1817 | keycode = KEY_VIDEO_NEXT; |
1818 | break; | |
4be44fcd | 1819 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
14e04fb3 | 1820 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1821 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
1822 | break; |
1823 | ||
1824 | default: | |
e9dab196 | 1825 | keycode = KEY_UNKNOWN; |
1da177e4 | 1826 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1827 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1828 | break; |
1829 | } | |
1830 | ||
7761f638 | 1831 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
1832 | input_report_key(input, keycode, 1); |
1833 | input_sync(input); | |
1834 | input_report_key(input, keycode, 0); | |
1835 | input_sync(input); | |
1836 | ||
d550d98d | 1837 | return; |
1da177e4 LT |
1838 | } |
1839 | ||
4be44fcd | 1840 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1841 | { |
50dd0969 | 1842 | struct acpi_video_device *video_device = data; |
4be44fcd | 1843 | struct acpi_device *device = NULL; |
e9dab196 LY |
1844 | struct acpi_video_bus *bus; |
1845 | struct input_dev *input; | |
1846 | int keycode; | |
1da177e4 | 1847 | |
1da177e4 | 1848 | if (!video_device) |
d550d98d | 1849 | return; |
1da177e4 | 1850 | |
e6afa0de | 1851 | device = video_device->dev; |
e9dab196 LY |
1852 | bus = video_device->video; |
1853 | input = bus->input; | |
1da177e4 LT |
1854 | |
1855 | switch (event) { | |
4be44fcd | 1856 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
8a681a4d ZR |
1857 | if (brightness_switch_enabled) |
1858 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1859 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1860 | keycode = KEY_BRIGHTNESS_CYCLE; |
1861 | break; | |
4be44fcd | 1862 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
8a681a4d ZR |
1863 | if (brightness_switch_enabled) |
1864 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1865 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1866 | keycode = KEY_BRIGHTNESSUP; |
1867 | break; | |
4be44fcd | 1868 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
8a681a4d ZR |
1869 | if (brightness_switch_enabled) |
1870 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1871 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1872 | keycode = KEY_BRIGHTNESSDOWN; |
1873 | break; | |
4be44fcd | 1874 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
8a681a4d ZR |
1875 | if (brightness_switch_enabled) |
1876 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1877 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1878 | keycode = KEY_BRIGHTNESS_ZERO; |
1879 | break; | |
4be44fcd | 1880 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
8a681a4d ZR |
1881 | if (brightness_switch_enabled) |
1882 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1883 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1884 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
1885 | break; |
1886 | default: | |
e9dab196 | 1887 | keycode = KEY_UNKNOWN; |
1da177e4 | 1888 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1889 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1890 | break; |
1891 | } | |
e9dab196 | 1892 | |
7761f638 | 1893 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
1894 | input_report_key(input, keycode, 1); |
1895 | input_sync(input); | |
1896 | input_report_key(input, keycode, 0); | |
1897 | input_sync(input); | |
1898 | ||
d550d98d | 1899 | return; |
1da177e4 LT |
1900 | } |
1901 | ||
e6d9da1d | 1902 | static int instance; |
863c1490 MG |
1903 | static int acpi_video_resume(struct acpi_device *device) |
1904 | { | |
1905 | struct acpi_video_bus *video; | |
1906 | struct acpi_video_device *video_device; | |
1907 | int i; | |
1908 | ||
1909 | if (!device || !acpi_driver_data(device)) | |
1910 | return -EINVAL; | |
1911 | ||
1912 | video = acpi_driver_data(device); | |
1913 | ||
1914 | for (i = 0; i < video->attached_count; i++) { | |
1915 | video_device = video->attached_array[i].bind_info; | |
1916 | if (video_device && video_device->backlight) | |
1917 | acpi_video_set_brightness(video_device->backlight); | |
1918 | } | |
1919 | return AE_OK; | |
1920 | } | |
1921 | ||
4be44fcd | 1922 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1923 | { |
f51e8391 DT |
1924 | acpi_status status; |
1925 | struct acpi_video_bus *video; | |
e9dab196 | 1926 | struct input_dev *input; |
f51e8391 | 1927 | int error; |
1da177e4 | 1928 | |
36bcbec7 | 1929 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 1930 | if (!video) |
d550d98d | 1931 | return -ENOMEM; |
1da177e4 | 1932 | |
e6d9da1d ZR |
1933 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
1934 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
1935 | if (instance) | |
1936 | device->pnp.bus_id[3] = '0' + instance; | |
1937 | instance ++; | |
1938 | } | |
1939 | ||
e6afa0de | 1940 | video->device = device; |
1da177e4 LT |
1941 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
1942 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1943 | acpi_driver_data(device) = video; | |
1944 | ||
1945 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
1946 | error = acpi_video_bus_check(video); |
1947 | if (error) | |
1948 | goto err_free_video; | |
1da177e4 | 1949 | |
f51e8391 DT |
1950 | error = acpi_video_bus_add_fs(device); |
1951 | if (error) | |
1952 | goto err_free_video; | |
1da177e4 | 1953 | |
bbac81f5 | 1954 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
1955 | INIT_LIST_HEAD(&video->video_device_list); |
1956 | ||
1957 | acpi_video_bus_get_devices(video, device); | |
1958 | acpi_video_bus_start_devices(video); | |
1959 | ||
90130268 | 1960 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1961 | ACPI_DEVICE_NOTIFY, |
1962 | acpi_video_bus_notify, video); | |
1da177e4 LT |
1963 | if (ACPI_FAILURE(status)) { |
1964 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1965 | "Error installing notify handler\n")); |
f51e8391 DT |
1966 | error = -ENODEV; |
1967 | goto err_stop_video; | |
1da177e4 LT |
1968 | } |
1969 | ||
e9dab196 | 1970 | video->input = input = input_allocate_device(); |
f51e8391 DT |
1971 | if (!input) { |
1972 | error = -ENOMEM; | |
1973 | goto err_uninstall_notify; | |
1974 | } | |
e9dab196 LY |
1975 | |
1976 | snprintf(video->phys, sizeof(video->phys), | |
1977 | "%s/video/input0", acpi_device_hid(video->device)); | |
1978 | ||
1979 | input->name = acpi_device_name(video->device); | |
1980 | input->phys = video->phys; | |
1981 | input->id.bustype = BUS_HOST; | |
1982 | input->id.product = 0x06; | |
91c05c66 | 1983 | input->dev.parent = &device->dev; |
e9dab196 LY |
1984 | input->evbit[0] = BIT(EV_KEY); |
1985 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
1986 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
1987 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
1988 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
1989 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
1990 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
1991 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
1992 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
1993 | set_bit(KEY_UNKNOWN, input->keybit); | |
e9dab196 | 1994 | |
f51e8391 DT |
1995 | error = input_register_device(input); |
1996 | if (error) | |
1997 | goto err_free_input_dev; | |
e9dab196 | 1998 | |
1da177e4 | 1999 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
2000 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
2001 | video->flags.multihead ? "yes" : "no", | |
2002 | video->flags.rom ? "yes" : "no", | |
2003 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 2004 | |
f51e8391 DT |
2005 | return 0; |
2006 | ||
2007 | err_free_input_dev: | |
2008 | input_free_device(input); | |
2009 | err_uninstall_notify: | |
2010 | acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, | |
2011 | acpi_video_bus_notify); | |
2012 | err_stop_video: | |
2013 | acpi_video_bus_stop_devices(video); | |
2014 | acpi_video_bus_put_devices(video); | |
2015 | kfree(video->attached_array); | |
2016 | acpi_video_bus_remove_fs(device); | |
2017 | err_free_video: | |
2018 | kfree(video); | |
2019 | acpi_driver_data(device) = NULL; | |
1da177e4 | 2020 | |
f51e8391 | 2021 | return error; |
1da177e4 LT |
2022 | } |
2023 | ||
4be44fcd | 2024 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 2025 | { |
4be44fcd LB |
2026 | acpi_status status = 0; |
2027 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 2028 | |
1da177e4 LT |
2029 | |
2030 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 2031 | return -EINVAL; |
1da177e4 | 2032 | |
50dd0969 | 2033 | video = acpi_driver_data(device); |
1da177e4 LT |
2034 | |
2035 | acpi_video_bus_stop_devices(video); | |
2036 | ||
90130268 | 2037 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
2038 | ACPI_DEVICE_NOTIFY, |
2039 | acpi_video_bus_notify); | |
1da177e4 LT |
2040 | |
2041 | acpi_video_bus_put_devices(video); | |
2042 | acpi_video_bus_remove_fs(device); | |
2043 | ||
e9dab196 | 2044 | input_unregister_device(video->input); |
6044ec88 | 2045 | kfree(video->attached_array); |
1da177e4 LT |
2046 | kfree(video); |
2047 | ||
d550d98d | 2048 | return 0; |
1da177e4 LT |
2049 | } |
2050 | ||
4be44fcd | 2051 | static int __init acpi_video_init(void) |
1da177e4 | 2052 | { |
4be44fcd | 2053 | int result = 0; |
1da177e4 | 2054 | |
1da177e4 LT |
2055 | |
2056 | /* | |
4be44fcd LB |
2057 | acpi_dbg_level = 0xFFFFFFFF; |
2058 | acpi_dbg_layer = 0x08000000; | |
2059 | */ | |
1da177e4 LT |
2060 | |
2061 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2062 | if (!acpi_video_dir) | |
d550d98d | 2063 | return -ENODEV; |
1da177e4 LT |
2064 | acpi_video_dir->owner = THIS_MODULE; |
2065 | ||
2066 | result = acpi_bus_register_driver(&acpi_video_bus); | |
2067 | if (result < 0) { | |
2068 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 2069 | return -ENODEV; |
1da177e4 LT |
2070 | } |
2071 | ||
d550d98d | 2072 | return 0; |
1da177e4 LT |
2073 | } |
2074 | ||
4be44fcd | 2075 | static void __exit acpi_video_exit(void) |
1da177e4 | 2076 | { |
1da177e4 LT |
2077 | |
2078 | acpi_bus_unregister_driver(&acpi_video_bus); | |
2079 | ||
2080 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2081 | ||
d550d98d | 2082 | return; |
1da177e4 LT |
2083 | } |
2084 | ||
2085 | module_init(acpi_video_init); | |
2086 | module_exit(acpi_video_exit); |