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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> |
935e5f29 | 39 | #include <linux/sort.h> |
1da177e4 LT |
40 | #include <asm/uaccess.h> |
41 | ||
42 | #include <acpi/acpi_bus.h> | |
43 | #include <acpi/acpi_drivers.h> | |
44 | ||
1da177e4 | 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 | ||
d32f6947 ZR |
171 | struct acpi_video_brightness_flags { |
172 | u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */ | |
d80fb99f | 173 | u8 _BCL_reversed:1; /* _BCL package is in a reversed order*/ |
d32f6947 ZR |
174 | }; |
175 | ||
1da177e4 | 176 | struct acpi_video_device_brightness { |
4be44fcd LB |
177 | int curr; |
178 | int count; | |
179 | int *levels; | |
d32f6947 | 180 | struct acpi_video_brightness_flags flags; |
1da177e4 LT |
181 | }; |
182 | ||
183 | struct acpi_video_device { | |
4be44fcd LB |
184 | unsigned long device_id; |
185 | struct acpi_video_device_flags flags; | |
186 | struct acpi_video_device_cap cap; | |
187 | struct list_head entry; | |
188 | struct acpi_video_bus *video; | |
189 | struct acpi_device *dev; | |
1da177e4 | 190 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 191 | struct backlight_device *backlight; |
702ed512 | 192 | struct thermal_cooling_device *cdev; |
23b0f015 | 193 | struct output_device *output_dev; |
1da177e4 LT |
194 | }; |
195 | ||
1da177e4 LT |
196 | /* bus */ |
197 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
198 | static struct file_operations acpi_video_bus_info_fops = { | |
cf7acfab | 199 | .owner = THIS_MODULE, |
4be44fcd LB |
200 | .open = acpi_video_bus_info_open_fs, |
201 | .read = seq_read, | |
202 | .llseek = seq_lseek, | |
203 | .release = single_release, | |
1da177e4 LT |
204 | }; |
205 | ||
206 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
207 | static struct file_operations acpi_video_bus_ROM_fops = { | |
cf7acfab | 208 | .owner = THIS_MODULE, |
4be44fcd LB |
209 | .open = acpi_video_bus_ROM_open_fs, |
210 | .read = seq_read, | |
211 | .llseek = seq_lseek, | |
212 | .release = single_release, | |
1da177e4 LT |
213 | }; |
214 | ||
4be44fcd LB |
215 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
216 | struct file *file); | |
1da177e4 | 217 | static struct file_operations acpi_video_bus_POST_info_fops = { |
cf7acfab | 218 | .owner = THIS_MODULE, |
4be44fcd LB |
219 | .open = acpi_video_bus_POST_info_open_fs, |
220 | .read = seq_read, | |
221 | .llseek = seq_lseek, | |
222 | .release = single_release, | |
1da177e4 LT |
223 | }; |
224 | ||
225 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
226 | static struct file_operations acpi_video_bus_POST_fops = { | |
cf7acfab | 227 | .owner = THIS_MODULE, |
4be44fcd LB |
228 | .open = acpi_video_bus_POST_open_fs, |
229 | .read = seq_read, | |
230 | .llseek = seq_lseek, | |
231 | .release = single_release, | |
1da177e4 LT |
232 | }; |
233 | ||
1da177e4 LT |
234 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
235 | static struct file_operations acpi_video_bus_DOS_fops = { | |
cf7acfab | 236 | .owner = THIS_MODULE, |
4be44fcd LB |
237 | .open = acpi_video_bus_DOS_open_fs, |
238 | .read = seq_read, | |
239 | .llseek = seq_lseek, | |
240 | .release = single_release, | |
1da177e4 LT |
241 | }; |
242 | ||
243 | /* device */ | |
4be44fcd LB |
244 | static int acpi_video_device_info_open_fs(struct inode *inode, |
245 | struct file *file); | |
1da177e4 | 246 | static struct file_operations acpi_video_device_info_fops = { |
cf7acfab | 247 | .owner = THIS_MODULE, |
4be44fcd LB |
248 | .open = acpi_video_device_info_open_fs, |
249 | .read = seq_read, | |
250 | .llseek = seq_lseek, | |
251 | .release = single_release, | |
1da177e4 LT |
252 | }; |
253 | ||
4be44fcd LB |
254 | static int acpi_video_device_state_open_fs(struct inode *inode, |
255 | struct file *file); | |
1da177e4 | 256 | static struct file_operations acpi_video_device_state_fops = { |
cf7acfab | 257 | .owner = THIS_MODULE, |
4be44fcd LB |
258 | .open = acpi_video_device_state_open_fs, |
259 | .read = seq_read, | |
260 | .llseek = seq_lseek, | |
261 | .release = single_release, | |
1da177e4 LT |
262 | }; |
263 | ||
4be44fcd LB |
264 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
265 | struct file *file); | |
1da177e4 | 266 | static struct file_operations acpi_video_device_brightness_fops = { |
cf7acfab | 267 | .owner = THIS_MODULE, |
4be44fcd LB |
268 | .open = acpi_video_device_brightness_open_fs, |
269 | .read = seq_read, | |
270 | .llseek = seq_lseek, | |
271 | .release = single_release, | |
1da177e4 LT |
272 | }; |
273 | ||
4be44fcd LB |
274 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
275 | struct file *file); | |
1da177e4 | 276 | static struct file_operations acpi_video_device_EDID_fops = { |
cf7acfab | 277 | .owner = THIS_MODULE, |
4be44fcd LB |
278 | .open = acpi_video_device_EDID_open_fs, |
279 | .read = seq_read, | |
280 | .llseek = seq_lseek, | |
281 | .release = single_release, | |
1da177e4 LT |
282 | }; |
283 | ||
4be44fcd | 284 | static char device_decode[][30] = { |
1da177e4 LT |
285 | "motherboard VGA device", |
286 | "PCI VGA device", | |
287 | "AGP VGA device", | |
288 | "UNKNOWN", | |
289 | }; | |
290 | ||
4be44fcd LB |
291 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
292 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
293 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
294 | struct acpi_video_device *device); | |
1da177e4 | 295 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
2f3d000a YL |
296 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
297 | int level); | |
298 | static int acpi_video_device_lcd_get_level_current( | |
299 | struct acpi_video_device *device, | |
27663c58 | 300 | unsigned long long *level); |
4be44fcd LB |
301 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
302 | u32 level_current, u32 event); | |
c8890f90 | 303 | static int acpi_video_switch_brightness(struct acpi_video_device *device, |
4be44fcd | 304 | int event); |
23b0f015 | 305 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
27663c58 | 306 | unsigned long long *state); |
23b0f015 LY |
307 | static int acpi_video_output_get(struct output_device *od); |
308 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 309 | |
2f3d000a YL |
310 | /*backlight device sysfs support*/ |
311 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
312 | { | |
27663c58 | 313 | unsigned long long cur_level; |
38531e6f | 314 | int i; |
2f3d000a | 315 | struct acpi_video_device *vd = |
655bfd7a | 316 | (struct acpi_video_device *)bl_get_data(bd); |
c8890f90 ZR |
317 | |
318 | if (acpi_video_device_lcd_get_level_current(vd, &cur_level)) | |
319 | return -EINVAL; | |
38531e6f MG |
320 | for (i = 2; i < vd->brightness->count; i++) { |
321 | if (vd->brightness->levels[i] == cur_level) | |
322 | /* The first two entries are special - see page 575 | |
323 | of the ACPI spec 3.0 */ | |
324 | return i-2; | |
325 | } | |
326 | return 0; | |
2f3d000a YL |
327 | } |
328 | ||
329 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
330 | { | |
24450c7a | 331 | int request_level = bd->props.brightness + 2; |
2f3d000a | 332 | struct acpi_video_device *vd = |
655bfd7a | 333 | (struct acpi_video_device *)bl_get_data(bd); |
24450c7a ZR |
334 | |
335 | return acpi_video_device_lcd_set_level(vd, | |
336 | vd->brightness->levels[request_level]); | |
2f3d000a YL |
337 | } |
338 | ||
599a52d1 RP |
339 | static struct backlight_ops acpi_backlight_ops = { |
340 | .get_brightness = acpi_video_get_brightness, | |
341 | .update_status = acpi_video_set_brightness, | |
342 | }; | |
343 | ||
23b0f015 LY |
344 | /*video output device sysfs support*/ |
345 | static int acpi_video_output_get(struct output_device *od) | |
346 | { | |
27663c58 | 347 | unsigned long long state; |
23b0f015 | 348 | struct acpi_video_device *vd = |
60043428 | 349 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
350 | acpi_video_device_get_state(vd, &state); |
351 | return (int)state; | |
352 | } | |
353 | ||
354 | static int acpi_video_output_set(struct output_device *od) | |
355 | { | |
356 | unsigned long state = od->request_state; | |
357 | struct acpi_video_device *vd= | |
60043428 | 358 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
359 | return acpi_video_device_set_state(vd, state); |
360 | } | |
361 | ||
362 | static struct output_properties acpi_output_properties = { | |
363 | .set_state = acpi_video_output_set, | |
364 | .get_status = acpi_video_output_get, | |
365 | }; | |
702ed512 ZR |
366 | |
367 | ||
368 | /* thermal cooling device callbacks */ | |
369 | static int video_get_max_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 | ||
374 | return sprintf(buf, "%d\n", video->brightness->count - 3); | |
375 | } | |
376 | ||
377 | static int video_get_cur_state(struct thermal_cooling_device *cdev, char *buf) | |
378 | { | |
379 | struct acpi_device *device = cdev->devdata; | |
380 | struct acpi_video_device *video = acpi_driver_data(device); | |
27663c58 | 381 | unsigned long long level; |
702ed512 ZR |
382 | int state; |
383 | ||
c8890f90 ZR |
384 | if (acpi_video_device_lcd_get_level_current(video, &level)) |
385 | return -EINVAL; | |
702ed512 ZR |
386 | for (state = 2; state < video->brightness->count; state++) |
387 | if (level == video->brightness->levels[state]) | |
388 | return sprintf(buf, "%d\n", | |
389 | video->brightness->count - state - 1); | |
390 | ||
391 | return -EINVAL; | |
392 | } | |
393 | ||
394 | static int | |
395 | video_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state) | |
396 | { | |
397 | struct acpi_device *device = cdev->devdata; | |
398 | struct acpi_video_device *video = acpi_driver_data(device); | |
399 | int level; | |
400 | ||
401 | if ( state >= video->brightness->count - 2) | |
402 | return -EINVAL; | |
403 | ||
404 | state = video->brightness->count - state; | |
405 | level = video->brightness->levels[state -1]; | |
406 | return acpi_video_device_lcd_set_level(video, level); | |
407 | } | |
408 | ||
409 | static struct thermal_cooling_device_ops video_cooling_ops = { | |
410 | .get_max_state = video_get_max_state, | |
411 | .get_cur_state = video_get_cur_state, | |
412 | .set_cur_state = video_set_cur_state, | |
413 | }; | |
414 | ||
1da177e4 LT |
415 | /* -------------------------------------------------------------------------- |
416 | Video Management | |
417 | -------------------------------------------------------------------------- */ | |
418 | ||
419 | /* device */ | |
420 | ||
421 | static int | |
27663c58 | 422 | acpi_video_device_query(struct acpi_video_device *device, unsigned long long *state) |
1da177e4 | 423 | { |
4be44fcd | 424 | int status; |
90130268 PM |
425 | |
426 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 427 | |
d550d98d | 428 | return status; |
1da177e4 LT |
429 | } |
430 | ||
431 | static int | |
4be44fcd | 432 | acpi_video_device_get_state(struct acpi_video_device *device, |
27663c58 | 433 | unsigned long long *state) |
1da177e4 | 434 | { |
4be44fcd | 435 | int status; |
1da177e4 | 436 | |
90130268 | 437 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 438 | |
d550d98d | 439 | return status; |
1da177e4 LT |
440 | } |
441 | ||
442 | static int | |
4be44fcd | 443 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 444 | { |
4be44fcd LB |
445 | int status; |
446 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
447 | struct acpi_object_list args = { 1, &arg0 }; | |
27663c58 | 448 | unsigned long long ret; |
1da177e4 | 449 | |
1da177e4 LT |
450 | |
451 | arg0.integer.value = state; | |
90130268 | 452 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 453 | |
d550d98d | 454 | return status; |
1da177e4 LT |
455 | } |
456 | ||
457 | static int | |
4be44fcd LB |
458 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
459 | union acpi_object **levels) | |
1da177e4 | 460 | { |
4be44fcd LB |
461 | int status; |
462 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
463 | union acpi_object *obj; | |
1da177e4 | 464 | |
1da177e4 LT |
465 | |
466 | *levels = NULL; | |
467 | ||
90130268 | 468 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 469 | if (!ACPI_SUCCESS(status)) |
d550d98d | 470 | return status; |
4be44fcd | 471 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 472 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 473 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
474 | status = -EFAULT; |
475 | goto err; | |
476 | } | |
477 | ||
478 | *levels = obj; | |
479 | ||
d550d98d | 480 | return 0; |
1da177e4 | 481 | |
4be44fcd | 482 | err: |
6044ec88 | 483 | kfree(buffer.pointer); |
1da177e4 | 484 | |
d550d98d | 485 | return status; |
1da177e4 LT |
486 | } |
487 | ||
488 | static int | |
4be44fcd | 489 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 490 | { |
24450c7a | 491 | int status; |
4be44fcd LB |
492 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
493 | struct acpi_object_list args = { 1, &arg0 }; | |
9e6dada9 | 494 | int state; |
1da177e4 | 495 | |
1da177e4 | 496 | arg0.integer.value = level; |
1da177e4 | 497 | |
24450c7a ZR |
498 | status = acpi_evaluate_object(device->dev->handle, "_BCM", |
499 | &args, NULL); | |
500 | if (ACPI_FAILURE(status)) { | |
501 | ACPI_ERROR((AE_INFO, "Evaluating _BCM failed")); | |
502 | return -EIO; | |
503 | } | |
504 | ||
4500ca8e | 505 | device->brightness->curr = level; |
9e6dada9 | 506 | for (state = 2; state < device->brightness->count; state++) |
24450c7a | 507 | if (level == device->brightness->levels[state]) { |
9e6dada9 | 508 | device->backlight->props.brightness = state - 2; |
24450c7a ZR |
509 | return 0; |
510 | } | |
9e6dada9 | 511 | |
24450c7a ZR |
512 | ACPI_ERROR((AE_INFO, "Current brightness invalid")); |
513 | return -EINVAL; | |
1da177e4 LT |
514 | } |
515 | ||
516 | static int | |
4be44fcd | 517 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
27663c58 | 518 | unsigned long long *level) |
1da177e4 | 519 | { |
c8890f90 ZR |
520 | acpi_status status = AE_OK; |
521 | ||
522 | if (device->cap._BQC) { | |
523 | status = acpi_evaluate_integer(device->dev->handle, "_BQC", | |
524 | NULL, level); | |
525 | if (ACPI_SUCCESS(status)) { | |
526 | device->brightness->curr = *level; | |
527 | return 0; | |
528 | } else { | |
529 | /* Fixme: | |
530 | * should we return an error or ignore this failure? | |
531 | * dev->brightness->curr is a cached value which stores | |
532 | * the correct current backlight level in most cases. | |
533 | * ACPI video backlight still works w/ buggy _BQC. | |
534 | * http://bugzilla.kernel.org/show_bug.cgi?id=12233 | |
535 | */ | |
536 | ACPI_WARNING((AE_INFO, "Evaluating _BQC failed")); | |
537 | device->cap._BQC = 0; | |
538 | } | |
539 | } | |
540 | ||
4500ca8e | 541 | *level = device->brightness->curr; |
c8890f90 | 542 | return 0; |
1da177e4 LT |
543 | } |
544 | ||
545 | static int | |
4be44fcd LB |
546 | acpi_video_device_EDID(struct acpi_video_device *device, |
547 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 548 | { |
4be44fcd LB |
549 | int status; |
550 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
551 | union acpi_object *obj; | |
552 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
553 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 554 | |
1da177e4 LT |
555 | |
556 | *edid = NULL; | |
557 | ||
558 | if (!device) | |
d550d98d | 559 | return -ENODEV; |
1da177e4 LT |
560 | if (length == 128) |
561 | arg0.integer.value = 1; | |
562 | else if (length == 256) | |
563 | arg0.integer.value = 2; | |
564 | else | |
d550d98d | 565 | return -EINVAL; |
1da177e4 | 566 | |
90130268 | 567 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 568 | if (ACPI_FAILURE(status)) |
d550d98d | 569 | return -ENODEV; |
1da177e4 | 570 | |
50dd0969 | 571 | obj = buffer.pointer; |
1da177e4 LT |
572 | |
573 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
574 | *edid = obj; | |
575 | else { | |
6468463a | 576 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
577 | status = -EFAULT; |
578 | kfree(obj); | |
579 | } | |
580 | ||
d550d98d | 581 | return status; |
1da177e4 LT |
582 | } |
583 | ||
1da177e4 LT |
584 | /* bus */ |
585 | ||
586 | static int | |
4be44fcd | 587 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 588 | { |
4be44fcd | 589 | int status; |
27663c58 | 590 | unsigned long long tmp; |
4be44fcd LB |
591 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
592 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 593 | |
1da177e4 LT |
594 | |
595 | arg0.integer.value = option; | |
596 | ||
90130268 | 597 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 598 | if (ACPI_SUCCESS(status)) |
4be44fcd | 599 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 600 | |
d550d98d | 601 | return status; |
1da177e4 LT |
602 | } |
603 | ||
604 | static int | |
27663c58 | 605 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long long *id) |
1da177e4 LT |
606 | { |
607 | int status; | |
608 | ||
90130268 | 609 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 610 | |
d550d98d | 611 | return status; |
1da177e4 LT |
612 | } |
613 | ||
614 | static int | |
4be44fcd | 615 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
27663c58 | 616 | unsigned long long *options) |
1da177e4 | 617 | { |
4be44fcd | 618 | int status; |
1da177e4 | 619 | |
90130268 | 620 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
621 | *options &= 3; |
622 | ||
d550d98d | 623 | return status; |
1da177e4 LT |
624 | } |
625 | ||
626 | /* | |
627 | * Arg: | |
628 | * video : video bus device pointer | |
629 | * bios_flag : | |
630 | * 0. The system BIOS should NOT automatically switch(toggle) | |
631 | * the active display output. | |
632 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 633 | * active display output. No switch event. |
1da177e4 LT |
634 | * 2. The _DGS value should be locked. |
635 | * 3. The system BIOS should not automatically switch (toggle) the | |
636 | * active display output, but instead generate the display switch | |
637 | * event notify code. | |
638 | * lcd_flag : | |
639 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 640 | * of the LCD when the power changes from AC to DC |
1da177e4 | 641 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 642 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
643 | * Return Value: |
644 | * -1 wrong arg. | |
645 | */ | |
646 | ||
647 | static int | |
4be44fcd | 648 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 649 | { |
4be44fcd LB |
650 | acpi_integer status = 0; |
651 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
652 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 653 | |
1da177e4 | 654 | |
4be44fcd | 655 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
656 | status = -1; |
657 | goto Failed; | |
658 | } | |
659 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
660 | video->dos_setting = arg0.integer.value; | |
90130268 | 661 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 662 | |
4be44fcd | 663 | Failed: |
d550d98d | 664 | return status; |
1da177e4 LT |
665 | } |
666 | ||
935e5f29 ZR |
667 | /* |
668 | * Simple comparison function used to sort backlight levels. | |
669 | */ | |
670 | ||
671 | static int | |
672 | acpi_video_cmp_level(const void *a, const void *b) | |
673 | { | |
674 | return *(int *)a - *(int *)b; | |
675 | } | |
676 | ||
1da177e4 LT |
677 | /* |
678 | * Arg: | |
679 | * device : video output device (LCD, CRT, ..) | |
680 | * | |
681 | * Return Value: | |
469778c1 JJ |
682 | * Maximum brightness level |
683 | * | |
684 | * Allocate and initialize device->brightness. | |
685 | */ | |
686 | ||
687 | static int | |
688 | acpi_video_init_brightness(struct acpi_video_device *device) | |
689 | { | |
690 | union acpi_object *obj = NULL; | |
d32f6947 | 691 | int i, max_level = 0, count = 0, level_ac_battery = 0; |
469778c1 JJ |
692 | union acpi_object *o; |
693 | struct acpi_video_device_brightness *br = NULL; | |
694 | ||
695 | if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { | |
696 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available " | |
697 | "LCD brightness level\n")); | |
698 | goto out; | |
699 | } | |
700 | ||
701 | if (obj->package.count < 2) | |
702 | goto out; | |
703 | ||
704 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
705 | if (!br) { | |
706 | printk(KERN_ERR "can't allocate memory\n"); | |
707 | goto out; | |
708 | } | |
709 | ||
d32f6947 | 710 | br->levels = kmalloc((obj->package.count + 2) * sizeof *(br->levels), |
469778c1 JJ |
711 | GFP_KERNEL); |
712 | if (!br->levels) | |
713 | goto out_free; | |
714 | ||
715 | for (i = 0; i < obj->package.count; i++) { | |
716 | o = (union acpi_object *)&obj->package.elements[i]; | |
717 | if (o->type != ACPI_TYPE_INTEGER) { | |
718 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
719 | continue; | |
720 | } | |
721 | br->levels[count] = (u32) o->integer.value; | |
722 | ||
723 | if (br->levels[count] > max_level) | |
724 | max_level = br->levels[count]; | |
725 | count++; | |
726 | } | |
727 | ||
d32f6947 ZR |
728 | /* |
729 | * some buggy BIOS don't export the levels | |
730 | * when machine is on AC/Battery in _BCL package. | |
731 | * In this case, the first two elements in _BCL packages | |
732 | * are also supported brightness levels that OS should take care of. | |
733 | */ | |
734 | for (i = 2; i < count; i++) | |
735 | if (br->levels[i] == br->levels[0] || | |
736 | br->levels[i] == br->levels[1]) | |
737 | level_ac_battery++; | |
738 | ||
739 | if (level_ac_battery < 2) { | |
740 | level_ac_battery = 2 - level_ac_battery; | |
741 | br->flags._BCL_no_ac_battery_levels = 1; | |
742 | for (i = (count - 1 + level_ac_battery); i >= 2; i--) | |
743 | br->levels[i] = br->levels[i - level_ac_battery]; | |
744 | count += level_ac_battery; | |
745 | } else if (level_ac_battery > 2) | |
746 | ACPI_ERROR((AE_INFO, "Too many duplicates in _BCL package\n")); | |
747 | ||
d80fb99f ZR |
748 | /* Check if the _BCL package is in a reversed order */ |
749 | if (max_level == br->levels[2]) { | |
750 | br->flags._BCL_reversed = 1; | |
751 | sort(&br->levels[2], count - 2, sizeof(br->levels[2]), | |
752 | acpi_video_cmp_level, NULL); | |
753 | } else if (max_level != br->levels[count - 1]) | |
754 | ACPI_ERROR((AE_INFO, | |
755 | "Found unordered _BCL package\n")); | |
935e5f29 | 756 | |
469778c1 JJ |
757 | br->count = count; |
758 | device->brightness = br; | |
d32f6947 ZR |
759 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
760 | "found %d brightness levels\n", count - 2)); | |
469778c1 JJ |
761 | kfree(obj); |
762 | return max_level; | |
763 | ||
764 | out_free_levels: | |
765 | kfree(br->levels); | |
766 | out_free: | |
767 | kfree(br); | |
768 | out: | |
769 | device->brightness = NULL; | |
770 | kfree(obj); | |
771 | return 0; | |
772 | } | |
773 | ||
774 | /* | |
775 | * Arg: | |
776 | * device : video output device (LCD, CRT, ..) | |
777 | * | |
778 | * Return Value: | |
1da177e4 LT |
779 | * None |
780 | * | |
98fb8fe1 | 781 | * Find out all required AML methods defined under the output |
1da177e4 LT |
782 | * device. |
783 | */ | |
784 | ||
4be44fcd | 785 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 786 | { |
1da177e4 | 787 | acpi_handle h_dummy1; |
2f3d000a | 788 | u32 max_level = 0; |
1da177e4 | 789 | |
1da177e4 | 790 | |
98934def | 791 | memset(&device->cap, 0, sizeof(device->cap)); |
1da177e4 | 792 | |
90130268 | 793 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
794 | device->cap._ADR = 1; |
795 | } | |
90130268 | 796 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 797 | device->cap._BCL = 1; |
1da177e4 | 798 | } |
90130268 | 799 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 800 | device->cap._BCM = 1; |
1da177e4 | 801 | } |
2f3d000a YL |
802 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
803 | device->cap._BQC = 1; | |
90130268 | 804 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 805 | device->cap._DDC = 1; |
1da177e4 | 806 | } |
90130268 | 807 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
808 | device->cap._DCS = 1; |
809 | } | |
90130268 | 810 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
811 | device->cap._DGS = 1; |
812 | } | |
90130268 | 813 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
814 | device->cap._DSS = 1; |
815 | } | |
816 | ||
c3d6de69 TR |
817 | if (acpi_video_backlight_support()) |
818 | max_level = acpi_video_init_brightness(device); | |
1da177e4 | 819 | |
c2c78905 | 820 | if (device->cap._BCL && device->cap._BCM && max_level > 0) { |
702ed512 | 821 | int result; |
2f3d000a YL |
822 | static int count = 0; |
823 | char *name; | |
2f3d000a YL |
824 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
825 | if (!name) | |
826 | return; | |
827 | ||
2f3d000a | 828 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 829 | device->backlight = backlight_device_register(name, |
599a52d1 | 830 | NULL, device, &acpi_backlight_ops); |
38531e6f | 831 | device->backlight->props.max_brightness = device->brightness->count-3; |
c2c78905 ZY |
832 | /* |
833 | * If there exists the _BQC object, the _BQC object will be | |
834 | * called to get the current backlight brightness. Otherwise | |
835 | * the brightness will be set to the maximum. | |
836 | */ | |
837 | if (device->cap._BQC) | |
838 | device->backlight->props.brightness = | |
839 | acpi_video_get_brightness(device->backlight); | |
840 | else | |
841 | device->backlight->props.brightness = | |
842 | device->backlight->props.max_brightness; | |
599a52d1 | 843 | backlight_update_status(device->backlight); |
2f3d000a | 844 | kfree(name); |
702ed512 ZR |
845 | |
846 | device->cdev = thermal_cooling_device_register("LCD", | |
847 | device->dev, &video_cooling_ops); | |
43ff39f2 TS |
848 | if (IS_ERR(device->cdev)) |
849 | return; | |
850 | ||
fc3a8828 GKH |
851 | dev_info(&device->dev->dev, "registered as cooling_device%d\n", |
852 | device->cdev->id); | |
9030062f JL |
853 | result = sysfs_create_link(&device->dev->dev.kobj, |
854 | &device->cdev->device.kobj, | |
855 | "thermal_cooling"); | |
856 | if (result) | |
857 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
858 | result = sysfs_create_link(&device->cdev->device.kobj, | |
859 | &device->dev->dev.kobj, "device"); | |
860 | if (result) | |
861 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
862 | ||
2f3d000a | 863 | } |
c3d6de69 TR |
864 | |
865 | if (acpi_video_display_switch_support()) { | |
866 | ||
867 | if (device->cap._DCS && device->cap._DSS) { | |
868 | static int count; | |
869 | char *name; | |
870 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
871 | if (!name) | |
872 | return; | |
873 | sprintf(name, "acpi_video%d", count++); | |
874 | device->output_dev = video_output_register(name, | |
875 | NULL, device, &acpi_output_properties); | |
876 | kfree(name); | |
877 | } | |
23b0f015 | 878 | } |
1da177e4 LT |
879 | } |
880 | ||
881 | /* | |
882 | * Arg: | |
883 | * device : video output device (VGA) | |
884 | * | |
885 | * Return Value: | |
886 | * None | |
887 | * | |
98fb8fe1 | 888 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
889 | */ |
890 | ||
4be44fcd | 891 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 892 | { |
4be44fcd | 893 | acpi_handle h_dummy1; |
1da177e4 | 894 | |
98934def | 895 | memset(&video->cap, 0, sizeof(video->cap)); |
90130268 | 896 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
897 | video->cap._DOS = 1; |
898 | } | |
90130268 | 899 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
900 | video->cap._DOD = 1; |
901 | } | |
90130268 | 902 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
903 | video->cap._ROM = 1; |
904 | } | |
90130268 | 905 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
906 | video->cap._GPD = 1; |
907 | } | |
90130268 | 908 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
909 | video->cap._SPD = 1; |
910 | } | |
90130268 | 911 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
912 | video->cap._VPO = 1; |
913 | } | |
914 | } | |
915 | ||
916 | /* | |
917 | * Check whether the video bus device has required AML method to | |
918 | * support the desired features | |
919 | */ | |
920 | ||
4be44fcd | 921 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 922 | { |
4be44fcd | 923 | acpi_status status = -ENOENT; |
22c13f9d | 924 | struct device *dev; |
1da177e4 LT |
925 | |
926 | if (!video) | |
d550d98d | 927 | return -EINVAL; |
1da177e4 | 928 | |
22c13f9d TR |
929 | dev = acpi_get_physical_pci_device(video->device->handle); |
930 | if (!dev) | |
931 | return -ENODEV; | |
932 | put_device(dev); | |
933 | ||
1da177e4 LT |
934 | /* Since there is no HID, CID and so on for VGA driver, we have |
935 | * to check well known required nodes. | |
936 | */ | |
937 | ||
98fb8fe1 | 938 | /* Does this device support video switching? */ |
4be44fcd | 939 | if (video->cap._DOS) { |
1da177e4 LT |
940 | video->flags.multihead = 1; |
941 | status = 0; | |
942 | } | |
943 | ||
98fb8fe1 | 944 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 945 | if (video->cap._ROM) { |
1da177e4 LT |
946 | video->flags.rom = 1; |
947 | status = 0; | |
948 | } | |
949 | ||
98fb8fe1 | 950 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 951 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
952 | video->flags.post = 1; |
953 | status = 0; | |
954 | } | |
955 | ||
d550d98d | 956 | return status; |
1da177e4 LT |
957 | } |
958 | ||
959 | /* -------------------------------------------------------------------------- | |
960 | FS Interface (/proc) | |
961 | -------------------------------------------------------------------------- */ | |
962 | ||
4be44fcd | 963 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
964 | |
965 | /* video devices */ | |
966 | ||
4be44fcd | 967 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 968 | { |
50dd0969 | 969 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 970 | |
1da177e4 LT |
971 | |
972 | if (!dev) | |
973 | goto end; | |
974 | ||
975 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
976 | seq_printf(seq, "type: "); | |
977 | if (dev->flags.crt) | |
978 | seq_printf(seq, "CRT\n"); | |
979 | else if (dev->flags.lcd) | |
980 | seq_printf(seq, "LCD\n"); | |
981 | else if (dev->flags.tvout) | |
982 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
983 | else if (dev->flags.dvi) |
984 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
985 | else |
986 | seq_printf(seq, "UNKNOWN\n"); | |
987 | ||
4be44fcd | 988 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 989 | |
4be44fcd | 990 | end: |
d550d98d | 991 | return 0; |
1da177e4 LT |
992 | } |
993 | ||
994 | static int | |
4be44fcd | 995 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
996 | { |
997 | return single_open(file, acpi_video_device_info_seq_show, | |
998 | PDE(inode)->data); | |
999 | } | |
1000 | ||
4be44fcd | 1001 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1002 | { |
4be44fcd | 1003 | int status; |
50dd0969 | 1004 | struct acpi_video_device *dev = seq->private; |
27663c58 | 1005 | unsigned long long state; |
1da177e4 | 1006 | |
1da177e4 LT |
1007 | |
1008 | if (!dev) | |
1009 | goto end; | |
1010 | ||
1011 | status = acpi_video_device_get_state(dev, &state); | |
1012 | seq_printf(seq, "state: "); | |
1013 | if (ACPI_SUCCESS(status)) | |
27663c58 | 1014 | seq_printf(seq, "0x%02llx\n", state); |
1da177e4 LT |
1015 | else |
1016 | seq_printf(seq, "<not supported>\n"); | |
1017 | ||
1018 | status = acpi_video_device_query(dev, &state); | |
1019 | seq_printf(seq, "query: "); | |
1020 | if (ACPI_SUCCESS(status)) | |
27663c58 | 1021 | seq_printf(seq, "0x%02llx\n", state); |
1da177e4 LT |
1022 | else |
1023 | seq_printf(seq, "<not supported>\n"); | |
1024 | ||
4be44fcd | 1025 | end: |
d550d98d | 1026 | return 0; |
1da177e4 LT |
1027 | } |
1028 | ||
1029 | static int | |
4be44fcd | 1030 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1031 | { |
1032 | return single_open(file, acpi_video_device_state_seq_show, | |
1033 | PDE(inode)->data); | |
1034 | } | |
1035 | ||
1036 | static ssize_t | |
4be44fcd LB |
1037 | acpi_video_device_write_state(struct file *file, |
1038 | const char __user * buffer, | |
1039 | size_t count, loff_t * data) | |
1da177e4 | 1040 | { |
4be44fcd | 1041 | int status; |
50dd0969 JE |
1042 | struct seq_file *m = file->private_data; |
1043 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
1044 | char str[12] = { 0 }; |
1045 | u32 state = 0; | |
1da177e4 | 1046 | |
1da177e4 LT |
1047 | |
1048 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 1049 | return -EINVAL; |
1da177e4 LT |
1050 | |
1051 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1052 | return -EFAULT; |
1da177e4 LT |
1053 | |
1054 | str[count] = 0; | |
1055 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1056 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
1057 | |
1058 | status = acpi_video_device_set_state(dev, state); | |
1059 | ||
1060 | if (status) | |
d550d98d | 1061 | return -EFAULT; |
1da177e4 | 1062 | |
d550d98d | 1063 | return count; |
1da177e4 LT |
1064 | } |
1065 | ||
1066 | static int | |
4be44fcd | 1067 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1068 | { |
50dd0969 | 1069 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 1070 | int i; |
1da177e4 | 1071 | |
1da177e4 LT |
1072 | |
1073 | if (!dev || !dev->brightness) { | |
1074 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 1075 | return 0; |
1da177e4 LT |
1076 | } |
1077 | ||
1078 | seq_printf(seq, "levels: "); | |
0a3db1ce | 1079 | for (i = 2; i < dev->brightness->count; i++) |
1da177e4 LT |
1080 | seq_printf(seq, " %d", dev->brightness->levels[i]); |
1081 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
1082 | ||
d550d98d | 1083 | return 0; |
1da177e4 LT |
1084 | } |
1085 | ||
1086 | static int | |
4be44fcd | 1087 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1088 | { |
1089 | return single_open(file, acpi_video_device_brightness_seq_show, | |
1090 | PDE(inode)->data); | |
1091 | } | |
1092 | ||
1093 | static ssize_t | |
4be44fcd LB |
1094 | acpi_video_device_write_brightness(struct file *file, |
1095 | const char __user * buffer, | |
1096 | size_t count, loff_t * data) | |
1da177e4 | 1097 | { |
50dd0969 JE |
1098 | struct seq_file *m = file->private_data; |
1099 | struct acpi_video_device *dev = m->private; | |
c88c5786 | 1100 | char str[5] = { 0 }; |
4be44fcd LB |
1101 | unsigned int level = 0; |
1102 | int i; | |
1da177e4 | 1103 | |
1da177e4 | 1104 | |
59d399d3 | 1105 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 1106 | return -EINVAL; |
1da177e4 LT |
1107 | |
1108 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1109 | return -EFAULT; |
1da177e4 LT |
1110 | |
1111 | str[count] = 0; | |
1112 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1113 | |
1da177e4 | 1114 | if (level > 100) |
d550d98d | 1115 | return -EFAULT; |
1da177e4 | 1116 | |
98fb8fe1 | 1117 | /* validate through the list of available levels */ |
0a3db1ce | 1118 | for (i = 2; i < dev->brightness->count; i++) |
1da177e4 | 1119 | if (level == dev->brightness->levels[i]) { |
24450c7a ZR |
1120 | if (!acpi_video_device_lcd_set_level(dev, level)) |
1121 | return count; | |
1da177e4 LT |
1122 | break; |
1123 | } | |
1124 | ||
24450c7a | 1125 | return -EINVAL; |
1da177e4 LT |
1126 | } |
1127 | ||
4be44fcd | 1128 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1129 | { |
50dd0969 | 1130 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
1131 | int status; |
1132 | int i; | |
1133 | union acpi_object *edid = NULL; | |
1da177e4 | 1134 | |
1da177e4 LT |
1135 | |
1136 | if (!dev) | |
1137 | goto out; | |
1138 | ||
4be44fcd | 1139 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 1140 | if (ACPI_FAILURE(status)) { |
4be44fcd | 1141 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
1142 | } |
1143 | ||
1144 | if (ACPI_FAILURE(status)) { | |
1145 | goto out; | |
1146 | } | |
1147 | ||
1148 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
1149 | for (i = 0; i < edid->buffer.length; i++) | |
1150 | seq_putc(seq, edid->buffer.pointer[i]); | |
1151 | } | |
1152 | ||
4be44fcd | 1153 | out: |
1da177e4 LT |
1154 | if (!edid) |
1155 | seq_printf(seq, "<not supported>\n"); | |
1156 | else | |
1157 | kfree(edid); | |
1158 | ||
d550d98d | 1159 | return 0; |
1da177e4 LT |
1160 | } |
1161 | ||
1162 | static int | |
4be44fcd | 1163 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1164 | { |
1165 | return single_open(file, acpi_video_device_EDID_seq_show, | |
1166 | PDE(inode)->data); | |
1167 | } | |
1168 | ||
4be44fcd | 1169 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 1170 | { |
251cb0bc | 1171 | struct proc_dir_entry *entry, *device_dir; |
1da177e4 LT |
1172 | struct acpi_video_device *vid_dev; |
1173 | ||
50dd0969 | 1174 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1175 | if (!vid_dev) |
d550d98d | 1176 | return -ENODEV; |
1da177e4 | 1177 | |
251cb0bc DT |
1178 | device_dir = proc_mkdir(acpi_device_bid(device), |
1179 | vid_dev->video->dir); | |
1180 | if (!device_dir) | |
1181 | return -ENOMEM; | |
1182 | ||
1183 | device_dir->owner = THIS_MODULE; | |
1da177e4 LT |
1184 | |
1185 | /* 'info' [R] */ | |
e0066c4e | 1186 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab | 1187 | &acpi_video_device_info_fops, acpi_driver_data(device)); |
1da177e4 | 1188 | if (!entry) |
251cb0bc | 1189 | goto err_remove_dir; |
1da177e4 LT |
1190 | |
1191 | /* 'state' [R/W] */ | |
cf7acfab DL |
1192 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1193 | entry = proc_create_data("state", S_IFREG | S_IRUGO | S_IWUSR, | |
e0066c4e | 1194 | device_dir, |
cf7acfab DL |
1195 | &acpi_video_device_state_fops, |
1196 | acpi_driver_data(device)); | |
1da177e4 | 1197 | if (!entry) |
251cb0bc | 1198 | goto err_remove_info; |
1da177e4 LT |
1199 | |
1200 | /* 'brightness' [R/W] */ | |
cf7acfab DL |
1201 | acpi_video_device_brightness_fops.write = |
1202 | acpi_video_device_write_brightness; | |
1203 | entry = proc_create_data("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
e0066c4e | 1204 | device_dir, |
cf7acfab DL |
1205 | &acpi_video_device_brightness_fops, |
1206 | acpi_driver_data(device)); | |
1da177e4 | 1207 | if (!entry) |
251cb0bc | 1208 | goto err_remove_state; |
1da177e4 LT |
1209 | |
1210 | /* 'EDID' [R] */ | |
e0066c4e | 1211 | entry = proc_create_data("EDID", S_IRUGO, device_dir, |
cf7acfab DL |
1212 | &acpi_video_device_EDID_fops, |
1213 | acpi_driver_data(device)); | |
1da177e4 | 1214 | if (!entry) |
251cb0bc | 1215 | goto err_remove_brightness; |
1da177e4 | 1216 | |
e0066c4e AD |
1217 | acpi_device_dir(device) = device_dir; |
1218 | ||
d550d98d | 1219 | return 0; |
251cb0bc DT |
1220 | |
1221 | err_remove_brightness: | |
1222 | remove_proc_entry("brightness", device_dir); | |
1223 | err_remove_state: | |
1224 | remove_proc_entry("state", device_dir); | |
1225 | err_remove_info: | |
1226 | remove_proc_entry("info", device_dir); | |
1227 | err_remove_dir: | |
1228 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); | |
1229 | return -ENOMEM; | |
1da177e4 LT |
1230 | } |
1231 | ||
4be44fcd | 1232 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1233 | { |
1234 | struct acpi_video_device *vid_dev; | |
251cb0bc | 1235 | struct proc_dir_entry *device_dir; |
1da177e4 | 1236 | |
50dd0969 | 1237 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1238 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 1239 | return -ENODEV; |
1da177e4 | 1240 | |
251cb0bc DT |
1241 | device_dir = acpi_device_dir(device); |
1242 | if (device_dir) { | |
1243 | remove_proc_entry("info", device_dir); | |
1244 | remove_proc_entry("state", device_dir); | |
1245 | remove_proc_entry("brightness", device_dir); | |
1246 | remove_proc_entry("EDID", device_dir); | |
4be44fcd | 1247 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1248 | acpi_device_dir(device) = NULL; |
1249 | } | |
1250 | ||
d550d98d | 1251 | return 0; |
1da177e4 LT |
1252 | } |
1253 | ||
1da177e4 | 1254 | /* video bus */ |
4be44fcd | 1255 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1256 | { |
50dd0969 | 1257 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1258 | |
1da177e4 LT |
1259 | |
1260 | if (!video) | |
1261 | goto end; | |
1262 | ||
1263 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1264 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1265 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1266 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1267 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1268 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1269 | |
4be44fcd | 1270 | end: |
d550d98d | 1271 | return 0; |
1da177e4 LT |
1272 | } |
1273 | ||
4be44fcd | 1274 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1275 | { |
4be44fcd LB |
1276 | return single_open(file, acpi_video_bus_info_seq_show, |
1277 | PDE(inode)->data); | |
1da177e4 LT |
1278 | } |
1279 | ||
4be44fcd | 1280 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1281 | { |
50dd0969 | 1282 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1283 | |
1da177e4 LT |
1284 | |
1285 | if (!video) | |
1286 | goto end; | |
1287 | ||
96b2dd1f | 1288 | printk(KERN_INFO PREFIX "Please implement %s\n", __func__); |
1da177e4 LT |
1289 | seq_printf(seq, "<TODO>\n"); |
1290 | ||
4be44fcd | 1291 | end: |
d550d98d | 1292 | return 0; |
1da177e4 LT |
1293 | } |
1294 | ||
4be44fcd | 1295 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1296 | { |
1297 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1298 | } | |
1299 | ||
4be44fcd | 1300 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1301 | { |
50dd0969 | 1302 | struct acpi_video_bus *video = seq->private; |
27663c58 | 1303 | unsigned long long options; |
4be44fcd | 1304 | int status; |
1da177e4 | 1305 | |
1da177e4 LT |
1306 | |
1307 | if (!video) | |
1308 | goto end; | |
1309 | ||
1310 | status = acpi_video_bus_POST_options(video, &options); | |
1311 | if (ACPI_SUCCESS(status)) { | |
1312 | if (!(options & 1)) { | |
4be44fcd LB |
1313 | printk(KERN_WARNING PREFIX |
1314 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1315 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1316 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 | 1317 | } |
4d939155 | 1318 | printk(KERN_WARNING "%llx\n", options); |
98fb8fe1 | 1319 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1320 | if (options & 2) |
1321 | seq_printf(seq, " <PCI video>"); | |
1322 | if (options & 4) | |
1323 | seq_printf(seq, " <AGP video>"); | |
1324 | seq_putc(seq, '\n'); | |
1325 | } else | |
1326 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1327 | end: |
d550d98d | 1328 | return 0; |
1da177e4 LT |
1329 | } |
1330 | ||
1331 | static int | |
4be44fcd | 1332 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1333 | { |
4be44fcd LB |
1334 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1335 | PDE(inode)->data); | |
1da177e4 LT |
1336 | } |
1337 | ||
4be44fcd | 1338 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1339 | { |
50dd0969 | 1340 | struct acpi_video_bus *video = seq->private; |
4be44fcd | 1341 | int status; |
27663c58 | 1342 | unsigned long long id; |
1da177e4 | 1343 | |
1da177e4 LT |
1344 | |
1345 | if (!video) | |
1346 | goto end; | |
1347 | ||
4be44fcd | 1348 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1349 | if (!ACPI_SUCCESS(status)) { |
1350 | seq_printf(seq, "<not supported>\n"); | |
1351 | goto end; | |
1352 | } | |
98fb8fe1 | 1353 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1354 | |
4be44fcd | 1355 | end: |
d550d98d | 1356 | return 0; |
1da177e4 LT |
1357 | } |
1358 | ||
4be44fcd | 1359 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1360 | { |
50dd0969 | 1361 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1362 | |
1da177e4 | 1363 | |
4be44fcd | 1364 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1365 | |
d550d98d | 1366 | return 0; |
1da177e4 LT |
1367 | } |
1368 | ||
4be44fcd | 1369 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1370 | { |
4be44fcd LB |
1371 | return single_open(file, acpi_video_bus_POST_seq_show, |
1372 | PDE(inode)->data); | |
1da177e4 LT |
1373 | } |
1374 | ||
4be44fcd | 1375 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1376 | { |
1377 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1378 | } | |
1379 | ||
1380 | static ssize_t | |
4be44fcd LB |
1381 | acpi_video_bus_write_POST(struct file *file, |
1382 | const char __user * buffer, | |
1383 | size_t count, loff_t * data) | |
1da177e4 | 1384 | { |
4be44fcd | 1385 | int status; |
50dd0969 JE |
1386 | struct seq_file *m = file->private_data; |
1387 | struct acpi_video_bus *video = m->private; | |
4be44fcd | 1388 | char str[12] = { 0 }; |
27663c58 | 1389 | unsigned long long opt, options; |
1da177e4 | 1390 | |
1da177e4 | 1391 | |
1da177e4 | 1392 | if (!video || count + 1 > sizeof str) |
d550d98d | 1393 | return -EINVAL; |
1da177e4 LT |
1394 | |
1395 | status = acpi_video_bus_POST_options(video, &options); | |
1396 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1397 | return -EINVAL; |
1da177e4 LT |
1398 | |
1399 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1400 | return -EFAULT; |
1da177e4 LT |
1401 | |
1402 | str[count] = 0; | |
1403 | opt = strtoul(str, NULL, 0); | |
1404 | if (opt > 3) | |
d550d98d | 1405 | return -EFAULT; |
1da177e4 | 1406 | |
98fb8fe1 | 1407 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1408 | options |= 1; |
1409 | ||
1410 | if (options & (1ul << opt)) { | |
4be44fcd | 1411 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1412 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1413 | return -EFAULT; |
1da177e4 LT |
1414 | |
1415 | } | |
1416 | ||
d550d98d | 1417 | return count; |
1da177e4 LT |
1418 | } |
1419 | ||
1420 | static ssize_t | |
4be44fcd LB |
1421 | acpi_video_bus_write_DOS(struct file *file, |
1422 | const char __user * buffer, | |
1423 | size_t count, loff_t * data) | |
1da177e4 | 1424 | { |
4be44fcd | 1425 | int status; |
50dd0969 JE |
1426 | struct seq_file *m = file->private_data; |
1427 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1428 | char str[12] = { 0 }; |
1429 | unsigned long opt; | |
1da177e4 | 1430 | |
1da177e4 | 1431 | |
1da177e4 | 1432 | if (!video || count + 1 > sizeof str) |
d550d98d | 1433 | return -EINVAL; |
1da177e4 LT |
1434 | |
1435 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1436 | return -EFAULT; |
1da177e4 LT |
1437 | |
1438 | str[count] = 0; | |
1439 | opt = strtoul(str, NULL, 0); | |
1440 | if (opt > 7) | |
d550d98d | 1441 | return -EFAULT; |
1da177e4 | 1442 | |
4be44fcd | 1443 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1444 | |
1445 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1446 | return -EFAULT; |
1da177e4 | 1447 | |
d550d98d | 1448 | return count; |
1da177e4 LT |
1449 | } |
1450 | ||
4be44fcd | 1451 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1452 | { |
251cb0bc DT |
1453 | struct acpi_video_bus *video = acpi_driver_data(device); |
1454 | struct proc_dir_entry *device_dir; | |
1455 | struct proc_dir_entry *entry; | |
1da177e4 | 1456 | |
251cb0bc DT |
1457 | device_dir = proc_mkdir(acpi_device_bid(device), acpi_video_dir); |
1458 | if (!device_dir) | |
1459 | return -ENOMEM; | |
1da177e4 | 1460 | |
251cb0bc | 1461 | device_dir->owner = THIS_MODULE; |
1da177e4 LT |
1462 | |
1463 | /* 'info' [R] */ | |
e0066c4e | 1464 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab DL |
1465 | &acpi_video_bus_info_fops, |
1466 | acpi_driver_data(device)); | |
1da177e4 | 1467 | if (!entry) |
251cb0bc | 1468 | goto err_remove_dir; |
1da177e4 LT |
1469 | |
1470 | /* 'ROM' [R] */ | |
e0066c4e | 1471 | entry = proc_create_data("ROM", S_IRUGO, device_dir, |
cf7acfab DL |
1472 | &acpi_video_bus_ROM_fops, |
1473 | acpi_driver_data(device)); | |
1da177e4 | 1474 | if (!entry) |
251cb0bc | 1475 | goto err_remove_info; |
1da177e4 LT |
1476 | |
1477 | /* 'POST_info' [R] */ | |
e0066c4e | 1478 | entry = proc_create_data("POST_info", S_IRUGO, device_dir, |
cf7acfab DL |
1479 | &acpi_video_bus_POST_info_fops, |
1480 | acpi_driver_data(device)); | |
1da177e4 | 1481 | if (!entry) |
251cb0bc | 1482 | goto err_remove_rom; |
1da177e4 LT |
1483 | |
1484 | /* 'POST' [R/W] */ | |
cf7acfab | 1485 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
08acd4f8 | 1486 | entry = proc_create_data("POST", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1487 | device_dir, |
cf7acfab DL |
1488 | &acpi_video_bus_POST_fops, |
1489 | acpi_driver_data(device)); | |
1da177e4 | 1490 | if (!entry) |
251cb0bc | 1491 | goto err_remove_post_info; |
1da177e4 LT |
1492 | |
1493 | /* 'DOS' [R/W] */ | |
cf7acfab | 1494 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
08acd4f8 | 1495 | entry = proc_create_data("DOS", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1496 | device_dir, |
cf7acfab DL |
1497 | &acpi_video_bus_DOS_fops, |
1498 | acpi_driver_data(device)); | |
1da177e4 | 1499 | if (!entry) |
251cb0bc | 1500 | goto err_remove_post; |
1da177e4 | 1501 | |
251cb0bc | 1502 | video->dir = acpi_device_dir(device) = device_dir; |
d550d98d | 1503 | return 0; |
251cb0bc DT |
1504 | |
1505 | err_remove_post: | |
1506 | remove_proc_entry("POST", device_dir); | |
1507 | err_remove_post_info: | |
1508 | remove_proc_entry("POST_info", device_dir); | |
1509 | err_remove_rom: | |
1510 | remove_proc_entry("ROM", device_dir); | |
1511 | err_remove_info: | |
1512 | remove_proc_entry("info", device_dir); | |
1513 | err_remove_dir: | |
1514 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); | |
1515 | return -ENOMEM; | |
1da177e4 LT |
1516 | } |
1517 | ||
4be44fcd | 1518 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1519 | { |
251cb0bc DT |
1520 | struct proc_dir_entry *device_dir = acpi_device_dir(device); |
1521 | ||
1522 | if (device_dir) { | |
1523 | remove_proc_entry("info", device_dir); | |
1524 | remove_proc_entry("ROM", device_dir); | |
1525 | remove_proc_entry("POST_info", device_dir); | |
1526 | remove_proc_entry("POST", device_dir); | |
1527 | remove_proc_entry("DOS", device_dir); | |
4be44fcd | 1528 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1529 | acpi_device_dir(device) = NULL; |
1530 | } | |
1531 | ||
d550d98d | 1532 | return 0; |
1da177e4 LT |
1533 | } |
1534 | ||
1535 | /* -------------------------------------------------------------------------- | |
1536 | Driver Interface | |
1537 | -------------------------------------------------------------------------- */ | |
1538 | ||
1539 | /* device interface */ | |
82cae999 RZ |
1540 | static struct acpi_video_device_attrib* |
1541 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1542 | { | |
78eed028 DT |
1543 | struct acpi_video_enumerated_device *ids; |
1544 | int i; | |
1545 | ||
1546 | for (i = 0; i < video->attached_count; i++) { | |
1547 | ids = &video->attached_array[i]; | |
1548 | if ((ids->value.int_val & 0xffff) == device_id) | |
1549 | return &ids->value.attrib; | |
1550 | } | |
82cae999 | 1551 | |
82cae999 RZ |
1552 | return NULL; |
1553 | } | |
1da177e4 LT |
1554 | |
1555 | static int | |
4be44fcd LB |
1556 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1557 | struct acpi_video_bus *video) | |
1da177e4 | 1558 | { |
27663c58 | 1559 | unsigned long long device_id; |
973bf491 | 1560 | int status; |
4be44fcd | 1561 | struct acpi_video_device *data; |
82cae999 | 1562 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1563 | |
1564 | if (!device || !video) | |
d550d98d | 1565 | return -EINVAL; |
1da177e4 | 1566 | |
4be44fcd LB |
1567 | status = |
1568 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1569 | if (ACPI_SUCCESS(status)) { |
1570 | ||
36bcbec7 | 1571 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1572 | if (!data) |
d550d98d | 1573 | return -ENOMEM; |
1da177e4 | 1574 | |
1da177e4 LT |
1575 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1576 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 1577 | device->driver_data = data; |
1da177e4 LT |
1578 | |
1579 | data->device_id = device_id; | |
1580 | data->video = video; | |
1581 | data->dev = device; | |
1582 | ||
82cae999 RZ |
1583 | attribute = acpi_video_get_device_attr(video, device_id); |
1584 | ||
1585 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1586 | switch (attribute->display_type) { | |
1587 | case ACPI_VIDEO_DISPLAY_CRT: | |
1588 | data->flags.crt = 1; | |
1589 | break; | |
1590 | case ACPI_VIDEO_DISPLAY_TV: | |
1591 | data->flags.tvout = 1; | |
1592 | break; | |
1593 | case ACPI_VIDEO_DISPLAY_DVI: | |
1594 | data->flags.dvi = 1; | |
1595 | break; | |
1596 | case ACPI_VIDEO_DISPLAY_LCD: | |
1597 | data->flags.lcd = 1; | |
1598 | break; | |
1599 | default: | |
1600 | data->flags.unknown = 1; | |
1601 | break; | |
1602 | } | |
1603 | if(attribute->bios_can_detect) | |
1604 | data->flags.bios = 1; | |
1605 | } else | |
1da177e4 | 1606 | data->flags.unknown = 1; |
4be44fcd | 1607 | |
1da177e4 LT |
1608 | acpi_video_device_bind(video, data); |
1609 | acpi_video_device_find_cap(data); | |
1610 | ||
90130268 | 1611 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1612 | ACPI_DEVICE_NOTIFY, |
1613 | acpi_video_device_notify, | |
1614 | data); | |
1da177e4 | 1615 | if (ACPI_FAILURE(status)) { |
55ac9a01 LM |
1616 | printk(KERN_ERR PREFIX |
1617 | "Error installing notify handler\n"); | |
973bf491 YL |
1618 | if(data->brightness) |
1619 | kfree(data->brightness->levels); | |
1620 | kfree(data->brightness); | |
1621 | kfree(data); | |
1622 | return -ENODEV; | |
1da177e4 LT |
1623 | } |
1624 | ||
bbac81f5 | 1625 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1626 | list_add_tail(&data->entry, &video->video_device_list); |
bbac81f5 | 1627 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1628 | |
1629 | acpi_video_device_add_fs(device); | |
1630 | ||
d550d98d | 1631 | return 0; |
1da177e4 LT |
1632 | } |
1633 | ||
d550d98d | 1634 | return -ENOENT; |
1da177e4 LT |
1635 | } |
1636 | ||
1637 | /* | |
1638 | * Arg: | |
1639 | * video : video bus device | |
1640 | * | |
1641 | * Return: | |
1642 | * none | |
1643 | * | |
1644 | * Enumerate the video device list of the video bus, | |
1645 | * bind the ids with the corresponding video devices | |
1646 | * under the video bus. | |
4be44fcd | 1647 | */ |
1da177e4 | 1648 | |
4be44fcd | 1649 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1650 | { |
ff102ea9 DT |
1651 | struct acpi_video_device *dev; |
1652 | ||
bbac81f5 | 1653 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1654 | |
1655 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1656 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1657 | |
bbac81f5 | 1658 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1659 | } |
1660 | ||
1661 | /* | |
1662 | * Arg: | |
1663 | * video : video bus device | |
1664 | * device : video output device under the video | |
1665 | * bus | |
1666 | * | |
1667 | * Return: | |
1668 | * none | |
1669 | * | |
1670 | * Bind the ids with the corresponding video devices | |
1671 | * under the video bus. | |
4be44fcd | 1672 | */ |
1da177e4 LT |
1673 | |
1674 | static void | |
4be44fcd LB |
1675 | acpi_video_device_bind(struct acpi_video_bus *video, |
1676 | struct acpi_video_device *device) | |
1da177e4 | 1677 | { |
78eed028 | 1678 | struct acpi_video_enumerated_device *ids; |
4be44fcd | 1679 | int i; |
1da177e4 | 1680 | |
78eed028 DT |
1681 | for (i = 0; i < video->attached_count; i++) { |
1682 | ids = &video->attached_array[i]; | |
1683 | if (device->device_id == (ids->value.int_val & 0xffff)) { | |
1684 | ids->bind_info = device; | |
1da177e4 LT |
1685 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); |
1686 | } | |
1687 | } | |
1da177e4 LT |
1688 | } |
1689 | ||
1690 | /* | |
1691 | * Arg: | |
1692 | * video : video bus device | |
1693 | * | |
1694 | * Return: | |
1695 | * < 0 : error | |
1696 | * | |
1697 | * Call _DOD to enumerate all devices attached to display adapter | |
1698 | * | |
4be44fcd | 1699 | */ |
1da177e4 LT |
1700 | |
1701 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1702 | { | |
4be44fcd LB |
1703 | int status; |
1704 | int count; | |
1705 | int i; | |
78eed028 | 1706 | struct acpi_video_enumerated_device *active_list; |
4be44fcd LB |
1707 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1708 | union acpi_object *dod = NULL; | |
1709 | union acpi_object *obj; | |
1da177e4 | 1710 | |
90130268 | 1711 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1712 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1713 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1714 | return status; |
1da177e4 LT |
1715 | } |
1716 | ||
50dd0969 | 1717 | dod = buffer.pointer; |
1da177e4 | 1718 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1719 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1720 | status = -EFAULT; |
1721 | goto out; | |
1722 | } | |
1723 | ||
1724 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1725 | dod->package.count)); |
1da177e4 | 1726 | |
78eed028 DT |
1727 | active_list = kcalloc(1 + dod->package.count, |
1728 | sizeof(struct acpi_video_enumerated_device), | |
1729 | GFP_KERNEL); | |
1730 | if (!active_list) { | |
1da177e4 LT |
1731 | status = -ENOMEM; |
1732 | goto out; | |
1733 | } | |
1734 | ||
1735 | count = 0; | |
1736 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1737 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1738 | |
1739 | if (obj->type != ACPI_TYPE_INTEGER) { | |
78eed028 DT |
1740 | printk(KERN_ERR PREFIX |
1741 | "Invalid _DOD data in element %d\n", i); | |
1742 | continue; | |
1da177e4 | 1743 | } |
78eed028 DT |
1744 | |
1745 | active_list[count].value.int_val = obj->integer.value; | |
1746 | active_list[count].bind_info = NULL; | |
4be44fcd LB |
1747 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1748 | (int)obj->integer.value)); | |
1da177e4 LT |
1749 | count++; |
1750 | } | |
1da177e4 | 1751 | |
6044ec88 | 1752 | kfree(video->attached_array); |
4be44fcd | 1753 | |
78eed028 | 1754 | video->attached_array = active_list; |
1da177e4 | 1755 | video->attached_count = count; |
78eed028 DT |
1756 | |
1757 | out: | |
02438d87 | 1758 | kfree(buffer.pointer); |
d550d98d | 1759 | return status; |
1da177e4 LT |
1760 | } |
1761 | ||
4be44fcd LB |
1762 | static int |
1763 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1764 | u32 level_current, u32 event) | |
1da177e4 | 1765 | { |
63f0edfc | 1766 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
1767 | max = max_below = 0; |
1768 | min = min_above = 255; | |
63f0edfc | 1769 | /* Find closest level to level_current */ |
0a3db1ce | 1770 | for (i = 2; i < device->brightness->count; i++) { |
63f0edfc AS |
1771 | l = device->brightness->levels[i]; |
1772 | if (abs(l - level_current) < abs(delta)) { | |
1773 | delta = l - level_current; | |
1774 | if (!delta) | |
1775 | break; | |
1776 | } | |
1777 | } | |
1778 | /* Ajust level_current to closest available level */ | |
1779 | level_current += delta; | |
0a3db1ce | 1780 | for (i = 2; i < device->brightness->count; i++) { |
f4715189 TT |
1781 | l = device->brightness->levels[i]; |
1782 | if (l < min) | |
1783 | min = l; | |
1784 | if (l > max) | |
1785 | max = l; | |
1786 | if (l < min_above && l > level_current) | |
1787 | min_above = l; | |
1788 | if (l > max_below && l < level_current) | |
1789 | max_below = l; | |
1790 | } | |
1791 | ||
1792 | switch (event) { | |
1793 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1794 | return (level_current < max) ? min_above : min; | |
1795 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1796 | return (level_current < max) ? min_above : max; | |
1797 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1798 | return (level_current > min) ? max_below : min; | |
1799 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1800 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1801 | return 0; | |
1802 | default: | |
1803 | return level_current; | |
1804 | } | |
1da177e4 LT |
1805 | } |
1806 | ||
c8890f90 | 1807 | static int |
4be44fcd | 1808 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 | 1809 | { |
27663c58 | 1810 | unsigned long long level_current, level_next; |
c8890f90 ZR |
1811 | int result = -EINVAL; |
1812 | ||
469778c1 | 1813 | if (!device->brightness) |
c8890f90 ZR |
1814 | goto out; |
1815 | ||
1816 | result = acpi_video_device_lcd_get_level_current(device, | |
1817 | &level_current); | |
1818 | if (result) | |
1819 | goto out; | |
1820 | ||
1da177e4 | 1821 | level_next = acpi_video_get_next_level(device, level_current, event); |
c8890f90 | 1822 | |
24450c7a | 1823 | result = acpi_video_device_lcd_set_level(device, level_next); |
c8890f90 ZR |
1824 | |
1825 | out: | |
1826 | if (result) | |
1827 | printk(KERN_ERR PREFIX "Failed to switch the brightness\n"); | |
1828 | ||
1829 | return result; | |
1da177e4 LT |
1830 | } |
1831 | ||
1832 | static int | |
4be44fcd LB |
1833 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1834 | struct acpi_device *device) | |
1da177e4 | 1835 | { |
4be44fcd | 1836 | int status = 0; |
ff102ea9 | 1837 | struct acpi_device *dev; |
1da177e4 LT |
1838 | |
1839 | acpi_video_device_enumerate(video); | |
1840 | ||
ff102ea9 | 1841 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
1842 | |
1843 | status = acpi_video_bus_get_one_device(dev, video); | |
1844 | if (ACPI_FAILURE(status)) { | |
55ac9a01 LM |
1845 | printk(KERN_WARNING PREFIX |
1846 | "Cant attach device"); | |
1da177e4 LT |
1847 | continue; |
1848 | } | |
1da177e4 | 1849 | } |
d550d98d | 1850 | return status; |
1da177e4 LT |
1851 | } |
1852 | ||
4be44fcd | 1853 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1854 | { |
031ec77b | 1855 | acpi_status status; |
1da177e4 LT |
1856 | struct acpi_video_bus *video; |
1857 | ||
1da177e4 LT |
1858 | |
1859 | if (!device || !device->video) | |
d550d98d | 1860 | return -ENOENT; |
1da177e4 LT |
1861 | |
1862 | video = device->video; | |
1863 | ||
1da177e4 LT |
1864 | acpi_video_device_remove_fs(device->dev); |
1865 | ||
90130268 | 1866 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1867 | ACPI_DEVICE_NOTIFY, |
1868 | acpi_video_device_notify); | |
599a52d1 | 1869 | backlight_device_unregister(device->backlight); |
702ed512 ZR |
1870 | if (device->cdev) { |
1871 | sysfs_remove_link(&device->dev->dev.kobj, | |
1872 | "thermal_cooling"); | |
1873 | sysfs_remove_link(&device->cdev->device.kobj, | |
1874 | "device"); | |
1875 | thermal_cooling_device_unregister(device->cdev); | |
1876 | device->cdev = NULL; | |
1877 | } | |
23b0f015 | 1878 | video_output_unregister(device->output_dev); |
ff102ea9 | 1879 | |
d550d98d | 1880 | return 0; |
1da177e4 LT |
1881 | } |
1882 | ||
4be44fcd | 1883 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1884 | { |
4be44fcd | 1885 | int status; |
ff102ea9 | 1886 | struct acpi_video_device *dev, *next; |
1da177e4 | 1887 | |
bbac81f5 | 1888 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1889 | |
ff102ea9 | 1890 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 1891 | |
ff102ea9 | 1892 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
1893 | if (ACPI_FAILURE(status)) |
1894 | printk(KERN_WARNING PREFIX | |
1895 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1896 | |
ff102ea9 DT |
1897 | if (dev->brightness) { |
1898 | kfree(dev->brightness->levels); | |
1899 | kfree(dev->brightness); | |
1900 | } | |
1901 | list_del(&dev->entry); | |
1902 | kfree(dev); | |
1da177e4 LT |
1903 | } |
1904 | ||
bbac81f5 | 1905 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1906 | |
d550d98d | 1907 | return 0; |
1da177e4 LT |
1908 | } |
1909 | ||
1910 | /* acpi_video interface */ | |
1911 | ||
4be44fcd | 1912 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 1913 | { |
a21101c4 | 1914 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
1915 | } |
1916 | ||
4be44fcd | 1917 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1918 | { |
1919 | return acpi_video_bus_DOS(video, 0, 1); | |
1920 | } | |
1921 | ||
4be44fcd | 1922 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1923 | { |
50dd0969 | 1924 | struct acpi_video_bus *video = data; |
4be44fcd | 1925 | struct acpi_device *device = NULL; |
e9dab196 LY |
1926 | struct input_dev *input; |
1927 | int keycode; | |
1928 | ||
1da177e4 | 1929 | if (!video) |
d550d98d | 1930 | return; |
1da177e4 | 1931 | |
e6afa0de | 1932 | device = video->device; |
e9dab196 | 1933 | input = video->input; |
1da177e4 LT |
1934 | |
1935 | switch (event) { | |
98fb8fe1 | 1936 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 1937 | * most likely via hotkey. */ |
14e04fb3 | 1938 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1939 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1940 | break; |
1941 | ||
98fb8fe1 | 1942 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1943 | * connector. */ |
1944 | acpi_video_device_enumerate(video); | |
1945 | acpi_video_device_rebind(video); | |
14e04fb3 | 1946 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1947 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1948 | break; |
1949 | ||
4be44fcd | 1950 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
25c87f7f | 1951 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1952 | keycode = KEY_SWITCHVIDEOMODE; |
1953 | break; | |
4be44fcd | 1954 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
25c87f7f | 1955 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1956 | keycode = KEY_VIDEO_NEXT; |
1957 | break; | |
4be44fcd | 1958 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
14e04fb3 | 1959 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1960 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
1961 | break; |
1962 | ||
1963 | default: | |
e9dab196 | 1964 | keycode = KEY_UNKNOWN; |
1da177e4 | 1965 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1966 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1967 | break; |
1968 | } | |
1969 | ||
7761f638 | 1970 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
1971 | input_report_key(input, keycode, 1); |
1972 | input_sync(input); | |
1973 | input_report_key(input, keycode, 0); | |
1974 | input_sync(input); | |
1975 | ||
d550d98d | 1976 | return; |
1da177e4 LT |
1977 | } |
1978 | ||
4be44fcd | 1979 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1980 | { |
50dd0969 | 1981 | struct acpi_video_device *video_device = data; |
4be44fcd | 1982 | struct acpi_device *device = NULL; |
e9dab196 LY |
1983 | struct acpi_video_bus *bus; |
1984 | struct input_dev *input; | |
1985 | int keycode; | |
1da177e4 | 1986 | |
1da177e4 | 1987 | if (!video_device) |
d550d98d | 1988 | return; |
1da177e4 | 1989 | |
e6afa0de | 1990 | device = video_device->dev; |
e9dab196 LY |
1991 | bus = video_device->video; |
1992 | input = bus->input; | |
1da177e4 LT |
1993 | |
1994 | switch (event) { | |
4be44fcd | 1995 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
8a681a4d ZR |
1996 | if (brightness_switch_enabled) |
1997 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1998 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1999 | keycode = KEY_BRIGHTNESS_CYCLE; |
2000 | break; | |
4be44fcd | 2001 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
8a681a4d ZR |
2002 | if (brightness_switch_enabled) |
2003 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2004 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2005 | keycode = KEY_BRIGHTNESSUP; |
2006 | break; | |
4be44fcd | 2007 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
8a681a4d ZR |
2008 | if (brightness_switch_enabled) |
2009 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2010 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2011 | keycode = KEY_BRIGHTNESSDOWN; |
2012 | break; | |
4be44fcd | 2013 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
8a681a4d ZR |
2014 | if (brightness_switch_enabled) |
2015 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2016 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2017 | keycode = KEY_BRIGHTNESS_ZERO; |
2018 | break; | |
4be44fcd | 2019 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
8a681a4d ZR |
2020 | if (brightness_switch_enabled) |
2021 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 2022 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2023 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
2024 | break; |
2025 | default: | |
e9dab196 | 2026 | keycode = KEY_UNKNOWN; |
1da177e4 | 2027 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 2028 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
2029 | break; |
2030 | } | |
e9dab196 | 2031 | |
7761f638 | 2032 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
2033 | input_report_key(input, keycode, 1); |
2034 | input_sync(input); | |
2035 | input_report_key(input, keycode, 0); | |
2036 | input_sync(input); | |
2037 | ||
d550d98d | 2038 | return; |
1da177e4 LT |
2039 | } |
2040 | ||
e6d9da1d | 2041 | static int instance; |
863c1490 MG |
2042 | static int acpi_video_resume(struct acpi_device *device) |
2043 | { | |
2044 | struct acpi_video_bus *video; | |
2045 | struct acpi_video_device *video_device; | |
2046 | int i; | |
2047 | ||
2048 | if (!device || !acpi_driver_data(device)) | |
2049 | return -EINVAL; | |
2050 | ||
2051 | video = acpi_driver_data(device); | |
2052 | ||
2053 | for (i = 0; i < video->attached_count; i++) { | |
2054 | video_device = video->attached_array[i].bind_info; | |
2055 | if (video_device && video_device->backlight) | |
2056 | acpi_video_set_brightness(video_device->backlight); | |
2057 | } | |
2058 | return AE_OK; | |
2059 | } | |
2060 | ||
4be44fcd | 2061 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 2062 | { |
f51e8391 DT |
2063 | acpi_status status; |
2064 | struct acpi_video_bus *video; | |
e9dab196 | 2065 | struct input_dev *input; |
f51e8391 | 2066 | int error; |
1da177e4 | 2067 | |
36bcbec7 | 2068 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 2069 | if (!video) |
d550d98d | 2070 | return -ENOMEM; |
1da177e4 | 2071 | |
e6d9da1d ZR |
2072 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
2073 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
2074 | if (instance) | |
2075 | device->pnp.bus_id[3] = '0' + instance; | |
2076 | instance ++; | |
2077 | } | |
f3b39f13 ZY |
2078 | /* a hack to fix the duplicate name "VGA" problem on Pa 3553 */ |
2079 | if (!strcmp(device->pnp.bus_id, "VGA")) { | |
2080 | if (instance) | |
2081 | device->pnp.bus_id[3] = '0' + instance; | |
2082 | instance++; | |
2083 | } | |
e6d9da1d | 2084 | |
e6afa0de | 2085 | video->device = device; |
1da177e4 LT |
2086 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
2087 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 2088 | device->driver_data = video; |
1da177e4 LT |
2089 | |
2090 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
2091 | error = acpi_video_bus_check(video); |
2092 | if (error) | |
2093 | goto err_free_video; | |
1da177e4 | 2094 | |
f51e8391 DT |
2095 | error = acpi_video_bus_add_fs(device); |
2096 | if (error) | |
2097 | goto err_free_video; | |
1da177e4 | 2098 | |
bbac81f5 | 2099 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
2100 | INIT_LIST_HEAD(&video->video_device_list); |
2101 | ||
2102 | acpi_video_bus_get_devices(video, device); | |
2103 | acpi_video_bus_start_devices(video); | |
2104 | ||
90130268 | 2105 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
2106 | ACPI_DEVICE_NOTIFY, |
2107 | acpi_video_bus_notify, video); | |
1da177e4 | 2108 | if (ACPI_FAILURE(status)) { |
55ac9a01 LM |
2109 | printk(KERN_ERR PREFIX |
2110 | "Error installing notify handler\n"); | |
f51e8391 DT |
2111 | error = -ENODEV; |
2112 | goto err_stop_video; | |
1da177e4 LT |
2113 | } |
2114 | ||
e9dab196 | 2115 | video->input = input = input_allocate_device(); |
f51e8391 DT |
2116 | if (!input) { |
2117 | error = -ENOMEM; | |
2118 | goto err_uninstall_notify; | |
2119 | } | |
e9dab196 LY |
2120 | |
2121 | snprintf(video->phys, sizeof(video->phys), | |
2122 | "%s/video/input0", acpi_device_hid(video->device)); | |
2123 | ||
2124 | input->name = acpi_device_name(video->device); | |
2125 | input->phys = video->phys; | |
2126 | input->id.bustype = BUS_HOST; | |
2127 | input->id.product = 0x06; | |
91c05c66 | 2128 | input->dev.parent = &device->dev; |
e9dab196 LY |
2129 | input->evbit[0] = BIT(EV_KEY); |
2130 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
2131 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
2132 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
2133 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
2134 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
2135 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
2136 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
2137 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
2138 | set_bit(KEY_UNKNOWN, input->keybit); | |
e9dab196 | 2139 | |
f51e8391 DT |
2140 | error = input_register_device(input); |
2141 | if (error) | |
2142 | goto err_free_input_dev; | |
e9dab196 | 2143 | |
1da177e4 | 2144 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
2145 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
2146 | video->flags.multihead ? "yes" : "no", | |
2147 | video->flags.rom ? "yes" : "no", | |
2148 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 2149 | |
f51e8391 DT |
2150 | return 0; |
2151 | ||
2152 | err_free_input_dev: | |
2153 | input_free_device(input); | |
2154 | err_uninstall_notify: | |
2155 | acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, | |
2156 | acpi_video_bus_notify); | |
2157 | err_stop_video: | |
2158 | acpi_video_bus_stop_devices(video); | |
2159 | acpi_video_bus_put_devices(video); | |
2160 | kfree(video->attached_array); | |
2161 | acpi_video_bus_remove_fs(device); | |
2162 | err_free_video: | |
2163 | kfree(video); | |
db89b4f0 | 2164 | device->driver_data = NULL; |
1da177e4 | 2165 | |
f51e8391 | 2166 | return error; |
1da177e4 LT |
2167 | } |
2168 | ||
4be44fcd | 2169 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 2170 | { |
4be44fcd LB |
2171 | acpi_status status = 0; |
2172 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 2173 | |
1da177e4 LT |
2174 | |
2175 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 2176 | return -EINVAL; |
1da177e4 | 2177 | |
50dd0969 | 2178 | video = acpi_driver_data(device); |
1da177e4 LT |
2179 | |
2180 | acpi_video_bus_stop_devices(video); | |
2181 | ||
90130268 | 2182 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
2183 | ACPI_DEVICE_NOTIFY, |
2184 | acpi_video_bus_notify); | |
1da177e4 LT |
2185 | |
2186 | acpi_video_bus_put_devices(video); | |
2187 | acpi_video_bus_remove_fs(device); | |
2188 | ||
e9dab196 | 2189 | input_unregister_device(video->input); |
6044ec88 | 2190 | kfree(video->attached_array); |
1da177e4 LT |
2191 | kfree(video); |
2192 | ||
d550d98d | 2193 | return 0; |
1da177e4 LT |
2194 | } |
2195 | ||
4be44fcd | 2196 | static int __init acpi_video_init(void) |
1da177e4 | 2197 | { |
4be44fcd | 2198 | int result = 0; |
1da177e4 | 2199 | |
1da177e4 LT |
2200 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); |
2201 | if (!acpi_video_dir) | |
d550d98d | 2202 | return -ENODEV; |
1da177e4 LT |
2203 | acpi_video_dir->owner = THIS_MODULE; |
2204 | ||
2205 | result = acpi_bus_register_driver(&acpi_video_bus); | |
2206 | if (result < 0) { | |
2207 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 2208 | return -ENODEV; |
1da177e4 LT |
2209 | } |
2210 | ||
d550d98d | 2211 | return 0; |
1da177e4 LT |
2212 | } |
2213 | ||
4be44fcd | 2214 | static void __exit acpi_video_exit(void) |
1da177e4 | 2215 | { |
1da177e4 LT |
2216 | |
2217 | acpi_bus_unregister_driver(&acpi_video_bus); | |
2218 | ||
2219 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2220 | ||
d550d98d | 2221 | return; |
1da177e4 LT |
2222 | } |
2223 | ||
2224 | module_init(acpi_video_init); | |
2225 | module_exit(acpi_video_exit); |