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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 */ | |
173 | }; | |
174 | ||
1da177e4 | 175 | struct acpi_video_device_brightness { |
4be44fcd LB |
176 | int curr; |
177 | int count; | |
178 | int *levels; | |
d32f6947 | 179 | struct acpi_video_brightness_flags flags; |
1da177e4 LT |
180 | }; |
181 | ||
182 | struct acpi_video_device { | |
4be44fcd LB |
183 | unsigned long device_id; |
184 | struct acpi_video_device_flags flags; | |
185 | struct acpi_video_device_cap cap; | |
186 | struct list_head entry; | |
187 | struct acpi_video_bus *video; | |
188 | struct acpi_device *dev; | |
1da177e4 | 189 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 190 | struct backlight_device *backlight; |
702ed512 | 191 | struct thermal_cooling_device *cdev; |
23b0f015 | 192 | struct output_device *output_dev; |
1da177e4 LT |
193 | }; |
194 | ||
1da177e4 LT |
195 | /* bus */ |
196 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
197 | static struct file_operations acpi_video_bus_info_fops = { | |
cf7acfab | 198 | .owner = THIS_MODULE, |
4be44fcd LB |
199 | .open = acpi_video_bus_info_open_fs, |
200 | .read = seq_read, | |
201 | .llseek = seq_lseek, | |
202 | .release = single_release, | |
1da177e4 LT |
203 | }; |
204 | ||
205 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
206 | static struct file_operations acpi_video_bus_ROM_fops = { | |
cf7acfab | 207 | .owner = THIS_MODULE, |
4be44fcd LB |
208 | .open = acpi_video_bus_ROM_open_fs, |
209 | .read = seq_read, | |
210 | .llseek = seq_lseek, | |
211 | .release = single_release, | |
1da177e4 LT |
212 | }; |
213 | ||
4be44fcd LB |
214 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
215 | struct file *file); | |
1da177e4 | 216 | static struct file_operations acpi_video_bus_POST_info_fops = { |
cf7acfab | 217 | .owner = THIS_MODULE, |
4be44fcd LB |
218 | .open = acpi_video_bus_POST_info_open_fs, |
219 | .read = seq_read, | |
220 | .llseek = seq_lseek, | |
221 | .release = single_release, | |
1da177e4 LT |
222 | }; |
223 | ||
224 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
225 | static struct file_operations acpi_video_bus_POST_fops = { | |
cf7acfab | 226 | .owner = THIS_MODULE, |
4be44fcd LB |
227 | .open = acpi_video_bus_POST_open_fs, |
228 | .read = seq_read, | |
229 | .llseek = seq_lseek, | |
230 | .release = single_release, | |
1da177e4 LT |
231 | }; |
232 | ||
1da177e4 LT |
233 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
234 | static struct file_operations acpi_video_bus_DOS_fops = { | |
cf7acfab | 235 | .owner = THIS_MODULE, |
4be44fcd LB |
236 | .open = acpi_video_bus_DOS_open_fs, |
237 | .read = seq_read, | |
238 | .llseek = seq_lseek, | |
239 | .release = single_release, | |
1da177e4 LT |
240 | }; |
241 | ||
242 | /* device */ | |
4be44fcd LB |
243 | static int acpi_video_device_info_open_fs(struct inode *inode, |
244 | struct file *file); | |
1da177e4 | 245 | static struct file_operations acpi_video_device_info_fops = { |
cf7acfab | 246 | .owner = THIS_MODULE, |
4be44fcd LB |
247 | .open = acpi_video_device_info_open_fs, |
248 | .read = seq_read, | |
249 | .llseek = seq_lseek, | |
250 | .release = single_release, | |
1da177e4 LT |
251 | }; |
252 | ||
4be44fcd LB |
253 | static int acpi_video_device_state_open_fs(struct inode *inode, |
254 | struct file *file); | |
1da177e4 | 255 | static struct file_operations acpi_video_device_state_fops = { |
cf7acfab | 256 | .owner = THIS_MODULE, |
4be44fcd LB |
257 | .open = acpi_video_device_state_open_fs, |
258 | .read = seq_read, | |
259 | .llseek = seq_lseek, | |
260 | .release = single_release, | |
1da177e4 LT |
261 | }; |
262 | ||
4be44fcd LB |
263 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
264 | struct file *file); | |
1da177e4 | 265 | static struct file_operations acpi_video_device_brightness_fops = { |
cf7acfab | 266 | .owner = THIS_MODULE, |
4be44fcd LB |
267 | .open = acpi_video_device_brightness_open_fs, |
268 | .read = seq_read, | |
269 | .llseek = seq_lseek, | |
270 | .release = single_release, | |
1da177e4 LT |
271 | }; |
272 | ||
4be44fcd LB |
273 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
274 | struct file *file); | |
1da177e4 | 275 | static struct file_operations acpi_video_device_EDID_fops = { |
cf7acfab | 276 | .owner = THIS_MODULE, |
4be44fcd LB |
277 | .open = acpi_video_device_EDID_open_fs, |
278 | .read = seq_read, | |
279 | .llseek = seq_lseek, | |
280 | .release = single_release, | |
1da177e4 LT |
281 | }; |
282 | ||
4be44fcd | 283 | static char device_decode[][30] = { |
1da177e4 LT |
284 | "motherboard VGA device", |
285 | "PCI VGA device", | |
286 | "AGP VGA device", | |
287 | "UNKNOWN", | |
288 | }; | |
289 | ||
4be44fcd LB |
290 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
291 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
292 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
293 | struct acpi_video_device *device); | |
1da177e4 | 294 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
2f3d000a YL |
295 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
296 | int level); | |
297 | static int acpi_video_device_lcd_get_level_current( | |
298 | struct acpi_video_device *device, | |
27663c58 | 299 | unsigned long long *level); |
4be44fcd LB |
300 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
301 | u32 level_current, u32 event); | |
c8890f90 | 302 | static int acpi_video_switch_brightness(struct acpi_video_device *device, |
4be44fcd | 303 | int event); |
23b0f015 | 304 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
27663c58 | 305 | unsigned long long *state); |
23b0f015 LY |
306 | static int acpi_video_output_get(struct output_device *od); |
307 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 308 | |
2f3d000a YL |
309 | /*backlight device sysfs support*/ |
310 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
311 | { | |
27663c58 | 312 | unsigned long long cur_level; |
38531e6f | 313 | int i; |
2f3d000a | 314 | struct acpi_video_device *vd = |
655bfd7a | 315 | (struct acpi_video_device *)bl_get_data(bd); |
c8890f90 ZR |
316 | |
317 | if (acpi_video_device_lcd_get_level_current(vd, &cur_level)) | |
318 | return -EINVAL; | |
38531e6f MG |
319 | for (i = 2; i < vd->brightness->count; i++) { |
320 | if (vd->brightness->levels[i] == cur_level) | |
321 | /* The first two entries are special - see page 575 | |
322 | of the ACPI spec 3.0 */ | |
323 | return i-2; | |
324 | } | |
325 | return 0; | |
2f3d000a YL |
326 | } |
327 | ||
328 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
329 | { | |
24450c7a | 330 | int request_level = bd->props.brightness + 2; |
2f3d000a | 331 | struct acpi_video_device *vd = |
655bfd7a | 332 | (struct acpi_video_device *)bl_get_data(bd); |
24450c7a ZR |
333 | |
334 | return acpi_video_device_lcd_set_level(vd, | |
335 | vd->brightness->levels[request_level]); | |
2f3d000a YL |
336 | } |
337 | ||
599a52d1 RP |
338 | static struct backlight_ops acpi_backlight_ops = { |
339 | .get_brightness = acpi_video_get_brightness, | |
340 | .update_status = acpi_video_set_brightness, | |
341 | }; | |
342 | ||
23b0f015 LY |
343 | /*video output device sysfs support*/ |
344 | static int acpi_video_output_get(struct output_device *od) | |
345 | { | |
27663c58 | 346 | unsigned long long state; |
23b0f015 | 347 | struct acpi_video_device *vd = |
60043428 | 348 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
349 | acpi_video_device_get_state(vd, &state); |
350 | return (int)state; | |
351 | } | |
352 | ||
353 | static int acpi_video_output_set(struct output_device *od) | |
354 | { | |
355 | unsigned long state = od->request_state; | |
356 | struct acpi_video_device *vd= | |
60043428 | 357 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
358 | return acpi_video_device_set_state(vd, state); |
359 | } | |
360 | ||
361 | static struct output_properties acpi_output_properties = { | |
362 | .set_state = acpi_video_output_set, | |
363 | .get_status = acpi_video_output_get, | |
364 | }; | |
702ed512 ZR |
365 | |
366 | ||
367 | /* thermal cooling device callbacks */ | |
368 | static int video_get_max_state(struct thermal_cooling_device *cdev, char *buf) | |
369 | { | |
370 | struct acpi_device *device = cdev->devdata; | |
371 | struct acpi_video_device *video = acpi_driver_data(device); | |
372 | ||
373 | return sprintf(buf, "%d\n", video->brightness->count - 3); | |
374 | } | |
375 | ||
376 | static int video_get_cur_state(struct thermal_cooling_device *cdev, char *buf) | |
377 | { | |
378 | struct acpi_device *device = cdev->devdata; | |
379 | struct acpi_video_device *video = acpi_driver_data(device); | |
27663c58 | 380 | unsigned long long level; |
702ed512 ZR |
381 | int state; |
382 | ||
c8890f90 ZR |
383 | if (acpi_video_device_lcd_get_level_current(video, &level)) |
384 | return -EINVAL; | |
702ed512 ZR |
385 | for (state = 2; state < video->brightness->count; state++) |
386 | if (level == video->brightness->levels[state]) | |
387 | return sprintf(buf, "%d\n", | |
388 | video->brightness->count - state - 1); | |
389 | ||
390 | return -EINVAL; | |
391 | } | |
392 | ||
393 | static int | |
394 | video_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state) | |
395 | { | |
396 | struct acpi_device *device = cdev->devdata; | |
397 | struct acpi_video_device *video = acpi_driver_data(device); | |
398 | int level; | |
399 | ||
400 | if ( state >= video->brightness->count - 2) | |
401 | return -EINVAL; | |
402 | ||
403 | state = video->brightness->count - state; | |
404 | level = video->brightness->levels[state -1]; | |
405 | return acpi_video_device_lcd_set_level(video, level); | |
406 | } | |
407 | ||
408 | static struct thermal_cooling_device_ops video_cooling_ops = { | |
409 | .get_max_state = video_get_max_state, | |
410 | .get_cur_state = video_get_cur_state, | |
411 | .set_cur_state = video_set_cur_state, | |
412 | }; | |
413 | ||
1da177e4 LT |
414 | /* -------------------------------------------------------------------------- |
415 | Video Management | |
416 | -------------------------------------------------------------------------- */ | |
417 | ||
418 | /* device */ | |
419 | ||
420 | static int | |
27663c58 | 421 | acpi_video_device_query(struct acpi_video_device *device, unsigned long long *state) |
1da177e4 | 422 | { |
4be44fcd | 423 | int status; |
90130268 PM |
424 | |
425 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 426 | |
d550d98d | 427 | return status; |
1da177e4 LT |
428 | } |
429 | ||
430 | static int | |
4be44fcd | 431 | acpi_video_device_get_state(struct acpi_video_device *device, |
27663c58 | 432 | unsigned long long *state) |
1da177e4 | 433 | { |
4be44fcd | 434 | int status; |
1da177e4 | 435 | |
90130268 | 436 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 437 | |
d550d98d | 438 | return status; |
1da177e4 LT |
439 | } |
440 | ||
441 | static int | |
4be44fcd | 442 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 443 | { |
4be44fcd LB |
444 | int status; |
445 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
446 | struct acpi_object_list args = { 1, &arg0 }; | |
27663c58 | 447 | unsigned long long ret; |
1da177e4 | 448 | |
1da177e4 LT |
449 | |
450 | arg0.integer.value = state; | |
90130268 | 451 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 452 | |
d550d98d | 453 | return status; |
1da177e4 LT |
454 | } |
455 | ||
456 | static int | |
4be44fcd LB |
457 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
458 | union acpi_object **levels) | |
1da177e4 | 459 | { |
4be44fcd LB |
460 | int status; |
461 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
462 | union acpi_object *obj; | |
1da177e4 | 463 | |
1da177e4 LT |
464 | |
465 | *levels = NULL; | |
466 | ||
90130268 | 467 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 468 | if (!ACPI_SUCCESS(status)) |
d550d98d | 469 | return status; |
4be44fcd | 470 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 471 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 472 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
473 | status = -EFAULT; |
474 | goto err; | |
475 | } | |
476 | ||
477 | *levels = obj; | |
478 | ||
d550d98d | 479 | return 0; |
1da177e4 | 480 | |
4be44fcd | 481 | err: |
6044ec88 | 482 | kfree(buffer.pointer); |
1da177e4 | 483 | |
d550d98d | 484 | return status; |
1da177e4 LT |
485 | } |
486 | ||
487 | static int | |
4be44fcd | 488 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 489 | { |
24450c7a | 490 | int status; |
4be44fcd LB |
491 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
492 | struct acpi_object_list args = { 1, &arg0 }; | |
9e6dada9 | 493 | int state; |
1da177e4 | 494 | |
1da177e4 | 495 | arg0.integer.value = level; |
1da177e4 | 496 | |
24450c7a ZR |
497 | status = acpi_evaluate_object(device->dev->handle, "_BCM", |
498 | &args, NULL); | |
499 | if (ACPI_FAILURE(status)) { | |
500 | ACPI_ERROR((AE_INFO, "Evaluating _BCM failed")); | |
501 | return -EIO; | |
502 | } | |
503 | ||
4500ca8e | 504 | device->brightness->curr = level; |
9e6dada9 | 505 | for (state = 2; state < device->brightness->count; state++) |
24450c7a | 506 | if (level == device->brightness->levels[state]) { |
9e6dada9 | 507 | device->backlight->props.brightness = state - 2; |
24450c7a ZR |
508 | return 0; |
509 | } | |
9e6dada9 | 510 | |
24450c7a ZR |
511 | ACPI_ERROR((AE_INFO, "Current brightness invalid")); |
512 | return -EINVAL; | |
1da177e4 LT |
513 | } |
514 | ||
515 | static int | |
4be44fcd | 516 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
27663c58 | 517 | unsigned long long *level) |
1da177e4 | 518 | { |
c8890f90 ZR |
519 | acpi_status status = AE_OK; |
520 | ||
521 | if (device->cap._BQC) { | |
522 | status = acpi_evaluate_integer(device->dev->handle, "_BQC", | |
523 | NULL, level); | |
524 | if (ACPI_SUCCESS(status)) { | |
525 | device->brightness->curr = *level; | |
526 | return 0; | |
527 | } else { | |
528 | /* Fixme: | |
529 | * should we return an error or ignore this failure? | |
530 | * dev->brightness->curr is a cached value which stores | |
531 | * the correct current backlight level in most cases. | |
532 | * ACPI video backlight still works w/ buggy _BQC. | |
533 | * http://bugzilla.kernel.org/show_bug.cgi?id=12233 | |
534 | */ | |
535 | ACPI_WARNING((AE_INFO, "Evaluating _BQC failed")); | |
536 | device->cap._BQC = 0; | |
537 | } | |
538 | } | |
539 | ||
4500ca8e | 540 | *level = device->brightness->curr; |
c8890f90 | 541 | return 0; |
1da177e4 LT |
542 | } |
543 | ||
544 | static int | |
4be44fcd LB |
545 | acpi_video_device_EDID(struct acpi_video_device *device, |
546 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 547 | { |
4be44fcd LB |
548 | int status; |
549 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
550 | union acpi_object *obj; | |
551 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
552 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 553 | |
1da177e4 LT |
554 | |
555 | *edid = NULL; | |
556 | ||
557 | if (!device) | |
d550d98d | 558 | return -ENODEV; |
1da177e4 LT |
559 | if (length == 128) |
560 | arg0.integer.value = 1; | |
561 | else if (length == 256) | |
562 | arg0.integer.value = 2; | |
563 | else | |
d550d98d | 564 | return -EINVAL; |
1da177e4 | 565 | |
90130268 | 566 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 567 | if (ACPI_FAILURE(status)) |
d550d98d | 568 | return -ENODEV; |
1da177e4 | 569 | |
50dd0969 | 570 | obj = buffer.pointer; |
1da177e4 LT |
571 | |
572 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
573 | *edid = obj; | |
574 | else { | |
6468463a | 575 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
576 | status = -EFAULT; |
577 | kfree(obj); | |
578 | } | |
579 | ||
d550d98d | 580 | return status; |
1da177e4 LT |
581 | } |
582 | ||
1da177e4 LT |
583 | /* bus */ |
584 | ||
585 | static int | |
4be44fcd | 586 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 587 | { |
4be44fcd | 588 | int status; |
27663c58 | 589 | unsigned long long tmp; |
4be44fcd LB |
590 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
591 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 592 | |
1da177e4 LT |
593 | |
594 | arg0.integer.value = option; | |
595 | ||
90130268 | 596 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 597 | if (ACPI_SUCCESS(status)) |
4be44fcd | 598 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 599 | |
d550d98d | 600 | return status; |
1da177e4 LT |
601 | } |
602 | ||
603 | static int | |
27663c58 | 604 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long long *id) |
1da177e4 LT |
605 | { |
606 | int status; | |
607 | ||
90130268 | 608 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 609 | |
d550d98d | 610 | return status; |
1da177e4 LT |
611 | } |
612 | ||
613 | static int | |
4be44fcd | 614 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
27663c58 | 615 | unsigned long long *options) |
1da177e4 | 616 | { |
4be44fcd | 617 | int status; |
1da177e4 | 618 | |
90130268 | 619 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
620 | *options &= 3; |
621 | ||
d550d98d | 622 | return status; |
1da177e4 LT |
623 | } |
624 | ||
625 | /* | |
626 | * Arg: | |
627 | * video : video bus device pointer | |
628 | * bios_flag : | |
629 | * 0. The system BIOS should NOT automatically switch(toggle) | |
630 | * the active display output. | |
631 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 632 | * active display output. No switch event. |
1da177e4 LT |
633 | * 2. The _DGS value should be locked. |
634 | * 3. The system BIOS should not automatically switch (toggle) the | |
635 | * active display output, but instead generate the display switch | |
636 | * event notify code. | |
637 | * lcd_flag : | |
638 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 639 | * of the LCD when the power changes from AC to DC |
1da177e4 | 640 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 641 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
642 | * Return Value: |
643 | * -1 wrong arg. | |
644 | */ | |
645 | ||
646 | static int | |
4be44fcd | 647 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 648 | { |
4be44fcd LB |
649 | acpi_integer status = 0; |
650 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
651 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 652 | |
1da177e4 | 653 | |
4be44fcd | 654 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
655 | status = -1; |
656 | goto Failed; | |
657 | } | |
658 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
659 | video->dos_setting = arg0.integer.value; | |
90130268 | 660 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 661 | |
4be44fcd | 662 | Failed: |
d550d98d | 663 | return status; |
1da177e4 LT |
664 | } |
665 | ||
935e5f29 ZR |
666 | /* |
667 | * Simple comparison function used to sort backlight levels. | |
668 | */ | |
669 | ||
670 | static int | |
671 | acpi_video_cmp_level(const void *a, const void *b) | |
672 | { | |
673 | return *(int *)a - *(int *)b; | |
674 | } | |
675 | ||
1da177e4 LT |
676 | /* |
677 | * Arg: | |
678 | * device : video output device (LCD, CRT, ..) | |
679 | * | |
680 | * Return Value: | |
469778c1 JJ |
681 | * Maximum brightness level |
682 | * | |
683 | * Allocate and initialize device->brightness. | |
684 | */ | |
685 | ||
686 | static int | |
687 | acpi_video_init_brightness(struct acpi_video_device *device) | |
688 | { | |
689 | union acpi_object *obj = NULL; | |
d32f6947 | 690 | int i, max_level = 0, count = 0, level_ac_battery = 0; |
469778c1 JJ |
691 | union acpi_object *o; |
692 | struct acpi_video_device_brightness *br = NULL; | |
693 | ||
694 | if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { | |
695 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available " | |
696 | "LCD brightness level\n")); | |
697 | goto out; | |
698 | } | |
699 | ||
700 | if (obj->package.count < 2) | |
701 | goto out; | |
702 | ||
703 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
704 | if (!br) { | |
705 | printk(KERN_ERR "can't allocate memory\n"); | |
706 | goto out; | |
707 | } | |
708 | ||
d32f6947 | 709 | br->levels = kmalloc((obj->package.count + 2) * sizeof *(br->levels), |
469778c1 JJ |
710 | GFP_KERNEL); |
711 | if (!br->levels) | |
712 | goto out_free; | |
713 | ||
714 | for (i = 0; i < obj->package.count; i++) { | |
715 | o = (union acpi_object *)&obj->package.elements[i]; | |
716 | if (o->type != ACPI_TYPE_INTEGER) { | |
717 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
718 | continue; | |
719 | } | |
720 | br->levels[count] = (u32) o->integer.value; | |
721 | ||
722 | if (br->levels[count] > max_level) | |
723 | max_level = br->levels[count]; | |
724 | count++; | |
725 | } | |
726 | ||
d32f6947 ZR |
727 | /* |
728 | * some buggy BIOS don't export the levels | |
729 | * when machine is on AC/Battery in _BCL package. | |
730 | * In this case, the first two elements in _BCL packages | |
731 | * are also supported brightness levels that OS should take care of. | |
732 | */ | |
733 | for (i = 2; i < count; i++) | |
734 | if (br->levels[i] == br->levels[0] || | |
735 | br->levels[i] == br->levels[1]) | |
736 | level_ac_battery++; | |
737 | ||
738 | if (level_ac_battery < 2) { | |
739 | level_ac_battery = 2 - level_ac_battery; | |
740 | br->flags._BCL_no_ac_battery_levels = 1; | |
741 | for (i = (count - 1 + level_ac_battery); i >= 2; i--) | |
742 | br->levels[i] = br->levels[i - level_ac_battery]; | |
743 | count += level_ac_battery; | |
744 | } else if (level_ac_battery > 2) | |
745 | ACPI_ERROR((AE_INFO, "Too many duplicates in _BCL package\n")); | |
746 | ||
747 | /* sort all the supported brightness levels */ | |
935e5f29 ZR |
748 | sort(&br->levels[2], count - 2, sizeof(br->levels[2]), |
749 | acpi_video_cmp_level, NULL); | |
750 | ||
469778c1 JJ |
751 | br->count = count; |
752 | device->brightness = br; | |
d32f6947 ZR |
753 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
754 | "found %d brightness levels\n", count - 2)); | |
469778c1 JJ |
755 | kfree(obj); |
756 | return max_level; | |
757 | ||
758 | out_free_levels: | |
759 | kfree(br->levels); | |
760 | out_free: | |
761 | kfree(br); | |
762 | out: | |
763 | device->brightness = NULL; | |
764 | kfree(obj); | |
765 | return 0; | |
766 | } | |
767 | ||
768 | /* | |
769 | * Arg: | |
770 | * device : video output device (LCD, CRT, ..) | |
771 | * | |
772 | * Return Value: | |
1da177e4 LT |
773 | * None |
774 | * | |
98fb8fe1 | 775 | * Find out all required AML methods defined under the output |
1da177e4 LT |
776 | * device. |
777 | */ | |
778 | ||
4be44fcd | 779 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 780 | { |
1da177e4 | 781 | acpi_handle h_dummy1; |
2f3d000a | 782 | u32 max_level = 0; |
1da177e4 | 783 | |
1da177e4 | 784 | |
98934def | 785 | memset(&device->cap, 0, sizeof(device->cap)); |
1da177e4 | 786 | |
90130268 | 787 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
788 | device->cap._ADR = 1; |
789 | } | |
90130268 | 790 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 791 | device->cap._BCL = 1; |
1da177e4 | 792 | } |
90130268 | 793 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 794 | device->cap._BCM = 1; |
1da177e4 | 795 | } |
2f3d000a YL |
796 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
797 | device->cap._BQC = 1; | |
90130268 | 798 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 799 | device->cap._DDC = 1; |
1da177e4 | 800 | } |
90130268 | 801 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
802 | device->cap._DCS = 1; |
803 | } | |
90130268 | 804 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
805 | device->cap._DGS = 1; |
806 | } | |
90130268 | 807 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
808 | device->cap._DSS = 1; |
809 | } | |
810 | ||
c3d6de69 TR |
811 | if (acpi_video_backlight_support()) |
812 | max_level = acpi_video_init_brightness(device); | |
1da177e4 | 813 | |
c2c78905 | 814 | if (device->cap._BCL && device->cap._BCM && max_level > 0) { |
702ed512 | 815 | int result; |
2f3d000a YL |
816 | static int count = 0; |
817 | char *name; | |
2f3d000a YL |
818 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
819 | if (!name) | |
820 | return; | |
821 | ||
2f3d000a | 822 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 823 | device->backlight = backlight_device_register(name, |
599a52d1 | 824 | NULL, device, &acpi_backlight_ops); |
38531e6f | 825 | device->backlight->props.max_brightness = device->brightness->count-3; |
c2c78905 ZY |
826 | /* |
827 | * If there exists the _BQC object, the _BQC object will be | |
828 | * called to get the current backlight brightness. Otherwise | |
829 | * the brightness will be set to the maximum. | |
830 | */ | |
831 | if (device->cap._BQC) | |
832 | device->backlight->props.brightness = | |
833 | acpi_video_get_brightness(device->backlight); | |
834 | else | |
835 | device->backlight->props.brightness = | |
836 | device->backlight->props.max_brightness; | |
599a52d1 | 837 | backlight_update_status(device->backlight); |
2f3d000a | 838 | kfree(name); |
702ed512 ZR |
839 | |
840 | device->cdev = thermal_cooling_device_register("LCD", | |
841 | device->dev, &video_cooling_ops); | |
43ff39f2 TS |
842 | if (IS_ERR(device->cdev)) |
843 | return; | |
844 | ||
fc3a8828 GKH |
845 | dev_info(&device->dev->dev, "registered as cooling_device%d\n", |
846 | device->cdev->id); | |
9030062f JL |
847 | result = sysfs_create_link(&device->dev->dev.kobj, |
848 | &device->cdev->device.kobj, | |
849 | "thermal_cooling"); | |
850 | if (result) | |
851 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
852 | result = sysfs_create_link(&device->cdev->device.kobj, | |
853 | &device->dev->dev.kobj, "device"); | |
854 | if (result) | |
855 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
856 | ||
2f3d000a | 857 | } |
c3d6de69 TR |
858 | |
859 | if (acpi_video_display_switch_support()) { | |
860 | ||
861 | if (device->cap._DCS && device->cap._DSS) { | |
862 | static int count; | |
863 | char *name; | |
864 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
865 | if (!name) | |
866 | return; | |
867 | sprintf(name, "acpi_video%d", count++); | |
868 | device->output_dev = video_output_register(name, | |
869 | NULL, device, &acpi_output_properties); | |
870 | kfree(name); | |
871 | } | |
23b0f015 | 872 | } |
1da177e4 LT |
873 | } |
874 | ||
875 | /* | |
876 | * Arg: | |
877 | * device : video output device (VGA) | |
878 | * | |
879 | * Return Value: | |
880 | * None | |
881 | * | |
98fb8fe1 | 882 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
883 | */ |
884 | ||
4be44fcd | 885 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 886 | { |
4be44fcd | 887 | acpi_handle h_dummy1; |
1da177e4 | 888 | |
98934def | 889 | memset(&video->cap, 0, sizeof(video->cap)); |
90130268 | 890 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
891 | video->cap._DOS = 1; |
892 | } | |
90130268 | 893 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
894 | video->cap._DOD = 1; |
895 | } | |
90130268 | 896 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
897 | video->cap._ROM = 1; |
898 | } | |
90130268 | 899 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
900 | video->cap._GPD = 1; |
901 | } | |
90130268 | 902 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
903 | video->cap._SPD = 1; |
904 | } | |
90130268 | 905 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
906 | video->cap._VPO = 1; |
907 | } | |
908 | } | |
909 | ||
910 | /* | |
911 | * Check whether the video bus device has required AML method to | |
912 | * support the desired features | |
913 | */ | |
914 | ||
4be44fcd | 915 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 916 | { |
4be44fcd | 917 | acpi_status status = -ENOENT; |
22c13f9d | 918 | struct device *dev; |
1da177e4 LT |
919 | |
920 | if (!video) | |
d550d98d | 921 | return -EINVAL; |
1da177e4 | 922 | |
22c13f9d TR |
923 | dev = acpi_get_physical_pci_device(video->device->handle); |
924 | if (!dev) | |
925 | return -ENODEV; | |
926 | put_device(dev); | |
927 | ||
1da177e4 LT |
928 | /* Since there is no HID, CID and so on for VGA driver, we have |
929 | * to check well known required nodes. | |
930 | */ | |
931 | ||
98fb8fe1 | 932 | /* Does this device support video switching? */ |
4be44fcd | 933 | if (video->cap._DOS) { |
1da177e4 LT |
934 | video->flags.multihead = 1; |
935 | status = 0; | |
936 | } | |
937 | ||
98fb8fe1 | 938 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 939 | if (video->cap._ROM) { |
1da177e4 LT |
940 | video->flags.rom = 1; |
941 | status = 0; | |
942 | } | |
943 | ||
98fb8fe1 | 944 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 945 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
946 | video->flags.post = 1; |
947 | status = 0; | |
948 | } | |
949 | ||
d550d98d | 950 | return status; |
1da177e4 LT |
951 | } |
952 | ||
953 | /* -------------------------------------------------------------------------- | |
954 | FS Interface (/proc) | |
955 | -------------------------------------------------------------------------- */ | |
956 | ||
4be44fcd | 957 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
958 | |
959 | /* video devices */ | |
960 | ||
4be44fcd | 961 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 962 | { |
50dd0969 | 963 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 964 | |
1da177e4 LT |
965 | |
966 | if (!dev) | |
967 | goto end; | |
968 | ||
969 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
970 | seq_printf(seq, "type: "); | |
971 | if (dev->flags.crt) | |
972 | seq_printf(seq, "CRT\n"); | |
973 | else if (dev->flags.lcd) | |
974 | seq_printf(seq, "LCD\n"); | |
975 | else if (dev->flags.tvout) | |
976 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
977 | else if (dev->flags.dvi) |
978 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
979 | else |
980 | seq_printf(seq, "UNKNOWN\n"); | |
981 | ||
4be44fcd | 982 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 983 | |
4be44fcd | 984 | end: |
d550d98d | 985 | return 0; |
1da177e4 LT |
986 | } |
987 | ||
988 | static int | |
4be44fcd | 989 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
990 | { |
991 | return single_open(file, acpi_video_device_info_seq_show, | |
992 | PDE(inode)->data); | |
993 | } | |
994 | ||
4be44fcd | 995 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 996 | { |
4be44fcd | 997 | int status; |
50dd0969 | 998 | struct acpi_video_device *dev = seq->private; |
27663c58 | 999 | unsigned long long state; |
1da177e4 | 1000 | |
1da177e4 LT |
1001 | |
1002 | if (!dev) | |
1003 | goto end; | |
1004 | ||
1005 | status = acpi_video_device_get_state(dev, &state); | |
1006 | seq_printf(seq, "state: "); | |
1007 | if (ACPI_SUCCESS(status)) | |
27663c58 | 1008 | seq_printf(seq, "0x%02llx\n", state); |
1da177e4 LT |
1009 | else |
1010 | seq_printf(seq, "<not supported>\n"); | |
1011 | ||
1012 | status = acpi_video_device_query(dev, &state); | |
1013 | seq_printf(seq, "query: "); | |
1014 | if (ACPI_SUCCESS(status)) | |
27663c58 | 1015 | seq_printf(seq, "0x%02llx\n", state); |
1da177e4 LT |
1016 | else |
1017 | seq_printf(seq, "<not supported>\n"); | |
1018 | ||
4be44fcd | 1019 | end: |
d550d98d | 1020 | return 0; |
1da177e4 LT |
1021 | } |
1022 | ||
1023 | static int | |
4be44fcd | 1024 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1025 | { |
1026 | return single_open(file, acpi_video_device_state_seq_show, | |
1027 | PDE(inode)->data); | |
1028 | } | |
1029 | ||
1030 | static ssize_t | |
4be44fcd LB |
1031 | acpi_video_device_write_state(struct file *file, |
1032 | const char __user * buffer, | |
1033 | size_t count, loff_t * data) | |
1da177e4 | 1034 | { |
4be44fcd | 1035 | int status; |
50dd0969 JE |
1036 | struct seq_file *m = file->private_data; |
1037 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
1038 | char str[12] = { 0 }; |
1039 | u32 state = 0; | |
1da177e4 | 1040 | |
1da177e4 LT |
1041 | |
1042 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 1043 | return -EINVAL; |
1da177e4 LT |
1044 | |
1045 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1046 | return -EFAULT; |
1da177e4 LT |
1047 | |
1048 | str[count] = 0; | |
1049 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1050 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
1051 | |
1052 | status = acpi_video_device_set_state(dev, state); | |
1053 | ||
1054 | if (status) | |
d550d98d | 1055 | return -EFAULT; |
1da177e4 | 1056 | |
d550d98d | 1057 | return count; |
1da177e4 LT |
1058 | } |
1059 | ||
1060 | static int | |
4be44fcd | 1061 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1062 | { |
50dd0969 | 1063 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 1064 | int i; |
1da177e4 | 1065 | |
1da177e4 LT |
1066 | |
1067 | if (!dev || !dev->brightness) { | |
1068 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 1069 | return 0; |
1da177e4 LT |
1070 | } |
1071 | ||
1072 | seq_printf(seq, "levels: "); | |
0a3db1ce | 1073 | for (i = 2; i < dev->brightness->count; i++) |
1da177e4 LT |
1074 | seq_printf(seq, " %d", dev->brightness->levels[i]); |
1075 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
1076 | ||
d550d98d | 1077 | return 0; |
1da177e4 LT |
1078 | } |
1079 | ||
1080 | static int | |
4be44fcd | 1081 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1082 | { |
1083 | return single_open(file, acpi_video_device_brightness_seq_show, | |
1084 | PDE(inode)->data); | |
1085 | } | |
1086 | ||
1087 | static ssize_t | |
4be44fcd LB |
1088 | acpi_video_device_write_brightness(struct file *file, |
1089 | const char __user * buffer, | |
1090 | size_t count, loff_t * data) | |
1da177e4 | 1091 | { |
50dd0969 JE |
1092 | struct seq_file *m = file->private_data; |
1093 | struct acpi_video_device *dev = m->private; | |
c88c5786 | 1094 | char str[5] = { 0 }; |
4be44fcd LB |
1095 | unsigned int level = 0; |
1096 | int i; | |
1da177e4 | 1097 | |
1da177e4 | 1098 | |
59d399d3 | 1099 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 1100 | return -EINVAL; |
1da177e4 LT |
1101 | |
1102 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1103 | return -EFAULT; |
1da177e4 LT |
1104 | |
1105 | str[count] = 0; | |
1106 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1107 | |
1da177e4 | 1108 | if (level > 100) |
d550d98d | 1109 | return -EFAULT; |
1da177e4 | 1110 | |
98fb8fe1 | 1111 | /* validate through the list of available levels */ |
0a3db1ce | 1112 | for (i = 2; i < dev->brightness->count; i++) |
1da177e4 | 1113 | if (level == dev->brightness->levels[i]) { |
24450c7a ZR |
1114 | if (!acpi_video_device_lcd_set_level(dev, level)) |
1115 | return count; | |
1da177e4 LT |
1116 | break; |
1117 | } | |
1118 | ||
24450c7a | 1119 | return -EINVAL; |
1da177e4 LT |
1120 | } |
1121 | ||
4be44fcd | 1122 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1123 | { |
50dd0969 | 1124 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
1125 | int status; |
1126 | int i; | |
1127 | union acpi_object *edid = NULL; | |
1da177e4 | 1128 | |
1da177e4 LT |
1129 | |
1130 | if (!dev) | |
1131 | goto out; | |
1132 | ||
4be44fcd | 1133 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 1134 | if (ACPI_FAILURE(status)) { |
4be44fcd | 1135 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
1136 | } |
1137 | ||
1138 | if (ACPI_FAILURE(status)) { | |
1139 | goto out; | |
1140 | } | |
1141 | ||
1142 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
1143 | for (i = 0; i < edid->buffer.length; i++) | |
1144 | seq_putc(seq, edid->buffer.pointer[i]); | |
1145 | } | |
1146 | ||
4be44fcd | 1147 | out: |
1da177e4 LT |
1148 | if (!edid) |
1149 | seq_printf(seq, "<not supported>\n"); | |
1150 | else | |
1151 | kfree(edid); | |
1152 | ||
d550d98d | 1153 | return 0; |
1da177e4 LT |
1154 | } |
1155 | ||
1156 | static int | |
4be44fcd | 1157 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1158 | { |
1159 | return single_open(file, acpi_video_device_EDID_seq_show, | |
1160 | PDE(inode)->data); | |
1161 | } | |
1162 | ||
4be44fcd | 1163 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 1164 | { |
251cb0bc | 1165 | struct proc_dir_entry *entry, *device_dir; |
1da177e4 LT |
1166 | struct acpi_video_device *vid_dev; |
1167 | ||
50dd0969 | 1168 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1169 | if (!vid_dev) |
d550d98d | 1170 | return -ENODEV; |
1da177e4 | 1171 | |
251cb0bc DT |
1172 | device_dir = proc_mkdir(acpi_device_bid(device), |
1173 | vid_dev->video->dir); | |
1174 | if (!device_dir) | |
1175 | return -ENOMEM; | |
1176 | ||
1177 | device_dir->owner = THIS_MODULE; | |
1da177e4 LT |
1178 | |
1179 | /* 'info' [R] */ | |
e0066c4e | 1180 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab | 1181 | &acpi_video_device_info_fops, acpi_driver_data(device)); |
1da177e4 | 1182 | if (!entry) |
251cb0bc | 1183 | goto err_remove_dir; |
1da177e4 LT |
1184 | |
1185 | /* 'state' [R/W] */ | |
cf7acfab DL |
1186 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1187 | entry = proc_create_data("state", S_IFREG | S_IRUGO | S_IWUSR, | |
e0066c4e | 1188 | device_dir, |
cf7acfab DL |
1189 | &acpi_video_device_state_fops, |
1190 | acpi_driver_data(device)); | |
1da177e4 | 1191 | if (!entry) |
251cb0bc | 1192 | goto err_remove_info; |
1da177e4 LT |
1193 | |
1194 | /* 'brightness' [R/W] */ | |
cf7acfab DL |
1195 | acpi_video_device_brightness_fops.write = |
1196 | acpi_video_device_write_brightness; | |
1197 | entry = proc_create_data("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
e0066c4e | 1198 | device_dir, |
cf7acfab DL |
1199 | &acpi_video_device_brightness_fops, |
1200 | acpi_driver_data(device)); | |
1da177e4 | 1201 | if (!entry) |
251cb0bc | 1202 | goto err_remove_state; |
1da177e4 LT |
1203 | |
1204 | /* 'EDID' [R] */ | |
e0066c4e | 1205 | entry = proc_create_data("EDID", S_IRUGO, device_dir, |
cf7acfab DL |
1206 | &acpi_video_device_EDID_fops, |
1207 | acpi_driver_data(device)); | |
1da177e4 | 1208 | if (!entry) |
251cb0bc | 1209 | goto err_remove_brightness; |
1da177e4 | 1210 | |
e0066c4e AD |
1211 | acpi_device_dir(device) = device_dir; |
1212 | ||
d550d98d | 1213 | return 0; |
251cb0bc DT |
1214 | |
1215 | err_remove_brightness: | |
1216 | remove_proc_entry("brightness", device_dir); | |
1217 | err_remove_state: | |
1218 | remove_proc_entry("state", device_dir); | |
1219 | err_remove_info: | |
1220 | remove_proc_entry("info", device_dir); | |
1221 | err_remove_dir: | |
1222 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); | |
1223 | return -ENOMEM; | |
1da177e4 LT |
1224 | } |
1225 | ||
4be44fcd | 1226 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1227 | { |
1228 | struct acpi_video_device *vid_dev; | |
251cb0bc | 1229 | struct proc_dir_entry *device_dir; |
1da177e4 | 1230 | |
50dd0969 | 1231 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1232 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 1233 | return -ENODEV; |
1da177e4 | 1234 | |
251cb0bc DT |
1235 | device_dir = acpi_device_dir(device); |
1236 | if (device_dir) { | |
1237 | remove_proc_entry("info", device_dir); | |
1238 | remove_proc_entry("state", device_dir); | |
1239 | remove_proc_entry("brightness", device_dir); | |
1240 | remove_proc_entry("EDID", device_dir); | |
4be44fcd | 1241 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1242 | acpi_device_dir(device) = NULL; |
1243 | } | |
1244 | ||
d550d98d | 1245 | return 0; |
1da177e4 LT |
1246 | } |
1247 | ||
1da177e4 | 1248 | /* video bus */ |
4be44fcd | 1249 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1250 | { |
50dd0969 | 1251 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1252 | |
1da177e4 LT |
1253 | |
1254 | if (!video) | |
1255 | goto end; | |
1256 | ||
1257 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1258 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1259 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1260 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1261 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1262 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1263 | |
4be44fcd | 1264 | end: |
d550d98d | 1265 | return 0; |
1da177e4 LT |
1266 | } |
1267 | ||
4be44fcd | 1268 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1269 | { |
4be44fcd LB |
1270 | return single_open(file, acpi_video_bus_info_seq_show, |
1271 | PDE(inode)->data); | |
1da177e4 LT |
1272 | } |
1273 | ||
4be44fcd | 1274 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1275 | { |
50dd0969 | 1276 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1277 | |
1da177e4 LT |
1278 | |
1279 | if (!video) | |
1280 | goto end; | |
1281 | ||
96b2dd1f | 1282 | printk(KERN_INFO PREFIX "Please implement %s\n", __func__); |
1da177e4 LT |
1283 | seq_printf(seq, "<TODO>\n"); |
1284 | ||
4be44fcd | 1285 | end: |
d550d98d | 1286 | return 0; |
1da177e4 LT |
1287 | } |
1288 | ||
4be44fcd | 1289 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1290 | { |
1291 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1292 | } | |
1293 | ||
4be44fcd | 1294 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1295 | { |
50dd0969 | 1296 | struct acpi_video_bus *video = seq->private; |
27663c58 | 1297 | unsigned long long options; |
4be44fcd | 1298 | int status; |
1da177e4 | 1299 | |
1da177e4 LT |
1300 | |
1301 | if (!video) | |
1302 | goto end; | |
1303 | ||
1304 | status = acpi_video_bus_POST_options(video, &options); | |
1305 | if (ACPI_SUCCESS(status)) { | |
1306 | if (!(options & 1)) { | |
4be44fcd LB |
1307 | printk(KERN_WARNING PREFIX |
1308 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1309 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1310 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 | 1311 | } |
4d939155 | 1312 | printk(KERN_WARNING "%llx\n", options); |
98fb8fe1 | 1313 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1314 | if (options & 2) |
1315 | seq_printf(seq, " <PCI video>"); | |
1316 | if (options & 4) | |
1317 | seq_printf(seq, " <AGP video>"); | |
1318 | seq_putc(seq, '\n'); | |
1319 | } else | |
1320 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1321 | end: |
d550d98d | 1322 | return 0; |
1da177e4 LT |
1323 | } |
1324 | ||
1325 | static int | |
4be44fcd | 1326 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1327 | { |
4be44fcd LB |
1328 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1329 | PDE(inode)->data); | |
1da177e4 LT |
1330 | } |
1331 | ||
4be44fcd | 1332 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1333 | { |
50dd0969 | 1334 | struct acpi_video_bus *video = seq->private; |
4be44fcd | 1335 | int status; |
27663c58 | 1336 | unsigned long long id; |
1da177e4 | 1337 | |
1da177e4 LT |
1338 | |
1339 | if (!video) | |
1340 | goto end; | |
1341 | ||
4be44fcd | 1342 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1343 | if (!ACPI_SUCCESS(status)) { |
1344 | seq_printf(seq, "<not supported>\n"); | |
1345 | goto end; | |
1346 | } | |
98fb8fe1 | 1347 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1348 | |
4be44fcd | 1349 | end: |
d550d98d | 1350 | return 0; |
1da177e4 LT |
1351 | } |
1352 | ||
4be44fcd | 1353 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1354 | { |
50dd0969 | 1355 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1356 | |
1da177e4 | 1357 | |
4be44fcd | 1358 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1359 | |
d550d98d | 1360 | return 0; |
1da177e4 LT |
1361 | } |
1362 | ||
4be44fcd | 1363 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1364 | { |
4be44fcd LB |
1365 | return single_open(file, acpi_video_bus_POST_seq_show, |
1366 | PDE(inode)->data); | |
1da177e4 LT |
1367 | } |
1368 | ||
4be44fcd | 1369 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1370 | { |
1371 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1372 | } | |
1373 | ||
1374 | static ssize_t | |
4be44fcd LB |
1375 | acpi_video_bus_write_POST(struct file *file, |
1376 | const char __user * buffer, | |
1377 | size_t count, loff_t * data) | |
1da177e4 | 1378 | { |
4be44fcd | 1379 | int status; |
50dd0969 JE |
1380 | struct seq_file *m = file->private_data; |
1381 | struct acpi_video_bus *video = m->private; | |
4be44fcd | 1382 | char str[12] = { 0 }; |
27663c58 | 1383 | unsigned long long opt, options; |
1da177e4 | 1384 | |
1da177e4 | 1385 | |
1da177e4 | 1386 | if (!video || count + 1 > sizeof str) |
d550d98d | 1387 | return -EINVAL; |
1da177e4 LT |
1388 | |
1389 | status = acpi_video_bus_POST_options(video, &options); | |
1390 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1391 | return -EINVAL; |
1da177e4 LT |
1392 | |
1393 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1394 | return -EFAULT; |
1da177e4 LT |
1395 | |
1396 | str[count] = 0; | |
1397 | opt = strtoul(str, NULL, 0); | |
1398 | if (opt > 3) | |
d550d98d | 1399 | return -EFAULT; |
1da177e4 | 1400 | |
98fb8fe1 | 1401 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1402 | options |= 1; |
1403 | ||
1404 | if (options & (1ul << opt)) { | |
4be44fcd | 1405 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1406 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1407 | return -EFAULT; |
1da177e4 LT |
1408 | |
1409 | } | |
1410 | ||
d550d98d | 1411 | return count; |
1da177e4 LT |
1412 | } |
1413 | ||
1414 | static ssize_t | |
4be44fcd LB |
1415 | acpi_video_bus_write_DOS(struct file *file, |
1416 | const char __user * buffer, | |
1417 | size_t count, loff_t * data) | |
1da177e4 | 1418 | { |
4be44fcd | 1419 | int status; |
50dd0969 JE |
1420 | struct seq_file *m = file->private_data; |
1421 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1422 | char str[12] = { 0 }; |
1423 | unsigned long opt; | |
1da177e4 | 1424 | |
1da177e4 | 1425 | |
1da177e4 | 1426 | if (!video || count + 1 > sizeof str) |
d550d98d | 1427 | return -EINVAL; |
1da177e4 LT |
1428 | |
1429 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1430 | return -EFAULT; |
1da177e4 LT |
1431 | |
1432 | str[count] = 0; | |
1433 | opt = strtoul(str, NULL, 0); | |
1434 | if (opt > 7) | |
d550d98d | 1435 | return -EFAULT; |
1da177e4 | 1436 | |
4be44fcd | 1437 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1438 | |
1439 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1440 | return -EFAULT; |
1da177e4 | 1441 | |
d550d98d | 1442 | return count; |
1da177e4 LT |
1443 | } |
1444 | ||
4be44fcd | 1445 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1446 | { |
251cb0bc DT |
1447 | struct acpi_video_bus *video = acpi_driver_data(device); |
1448 | struct proc_dir_entry *device_dir; | |
1449 | struct proc_dir_entry *entry; | |
1da177e4 | 1450 | |
251cb0bc DT |
1451 | device_dir = proc_mkdir(acpi_device_bid(device), acpi_video_dir); |
1452 | if (!device_dir) | |
1453 | return -ENOMEM; | |
1da177e4 | 1454 | |
251cb0bc | 1455 | device_dir->owner = THIS_MODULE; |
1da177e4 LT |
1456 | |
1457 | /* 'info' [R] */ | |
e0066c4e | 1458 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab DL |
1459 | &acpi_video_bus_info_fops, |
1460 | acpi_driver_data(device)); | |
1da177e4 | 1461 | if (!entry) |
251cb0bc | 1462 | goto err_remove_dir; |
1da177e4 LT |
1463 | |
1464 | /* 'ROM' [R] */ | |
e0066c4e | 1465 | entry = proc_create_data("ROM", S_IRUGO, device_dir, |
cf7acfab DL |
1466 | &acpi_video_bus_ROM_fops, |
1467 | acpi_driver_data(device)); | |
1da177e4 | 1468 | if (!entry) |
251cb0bc | 1469 | goto err_remove_info; |
1da177e4 LT |
1470 | |
1471 | /* 'POST_info' [R] */ | |
e0066c4e | 1472 | entry = proc_create_data("POST_info", S_IRUGO, device_dir, |
cf7acfab DL |
1473 | &acpi_video_bus_POST_info_fops, |
1474 | acpi_driver_data(device)); | |
1da177e4 | 1475 | if (!entry) |
251cb0bc | 1476 | goto err_remove_rom; |
1da177e4 LT |
1477 | |
1478 | /* 'POST' [R/W] */ | |
cf7acfab | 1479 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
08acd4f8 | 1480 | entry = proc_create_data("POST", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1481 | device_dir, |
cf7acfab DL |
1482 | &acpi_video_bus_POST_fops, |
1483 | acpi_driver_data(device)); | |
1da177e4 | 1484 | if (!entry) |
251cb0bc | 1485 | goto err_remove_post_info; |
1da177e4 LT |
1486 | |
1487 | /* 'DOS' [R/W] */ | |
cf7acfab | 1488 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
08acd4f8 | 1489 | entry = proc_create_data("DOS", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1490 | device_dir, |
cf7acfab DL |
1491 | &acpi_video_bus_DOS_fops, |
1492 | acpi_driver_data(device)); | |
1da177e4 | 1493 | if (!entry) |
251cb0bc | 1494 | goto err_remove_post; |
1da177e4 | 1495 | |
251cb0bc | 1496 | video->dir = acpi_device_dir(device) = device_dir; |
d550d98d | 1497 | return 0; |
251cb0bc DT |
1498 | |
1499 | err_remove_post: | |
1500 | remove_proc_entry("POST", device_dir); | |
1501 | err_remove_post_info: | |
1502 | remove_proc_entry("POST_info", device_dir); | |
1503 | err_remove_rom: | |
1504 | remove_proc_entry("ROM", device_dir); | |
1505 | err_remove_info: | |
1506 | remove_proc_entry("info", device_dir); | |
1507 | err_remove_dir: | |
1508 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); | |
1509 | return -ENOMEM; | |
1da177e4 LT |
1510 | } |
1511 | ||
4be44fcd | 1512 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1513 | { |
251cb0bc DT |
1514 | struct proc_dir_entry *device_dir = acpi_device_dir(device); |
1515 | ||
1516 | if (device_dir) { | |
1517 | remove_proc_entry("info", device_dir); | |
1518 | remove_proc_entry("ROM", device_dir); | |
1519 | remove_proc_entry("POST_info", device_dir); | |
1520 | remove_proc_entry("POST", device_dir); | |
1521 | remove_proc_entry("DOS", device_dir); | |
4be44fcd | 1522 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1523 | acpi_device_dir(device) = NULL; |
1524 | } | |
1525 | ||
d550d98d | 1526 | return 0; |
1da177e4 LT |
1527 | } |
1528 | ||
1529 | /* -------------------------------------------------------------------------- | |
1530 | Driver Interface | |
1531 | -------------------------------------------------------------------------- */ | |
1532 | ||
1533 | /* device interface */ | |
82cae999 RZ |
1534 | static struct acpi_video_device_attrib* |
1535 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1536 | { | |
78eed028 DT |
1537 | struct acpi_video_enumerated_device *ids; |
1538 | int i; | |
1539 | ||
1540 | for (i = 0; i < video->attached_count; i++) { | |
1541 | ids = &video->attached_array[i]; | |
1542 | if ((ids->value.int_val & 0xffff) == device_id) | |
1543 | return &ids->value.attrib; | |
1544 | } | |
82cae999 | 1545 | |
82cae999 RZ |
1546 | return NULL; |
1547 | } | |
1da177e4 LT |
1548 | |
1549 | static int | |
4be44fcd LB |
1550 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1551 | struct acpi_video_bus *video) | |
1da177e4 | 1552 | { |
27663c58 | 1553 | unsigned long long device_id; |
973bf491 | 1554 | int status; |
4be44fcd | 1555 | struct acpi_video_device *data; |
82cae999 | 1556 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1557 | |
1558 | if (!device || !video) | |
d550d98d | 1559 | return -EINVAL; |
1da177e4 | 1560 | |
4be44fcd LB |
1561 | status = |
1562 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1563 | if (ACPI_SUCCESS(status)) { |
1564 | ||
36bcbec7 | 1565 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1566 | if (!data) |
d550d98d | 1567 | return -ENOMEM; |
1da177e4 | 1568 | |
1da177e4 LT |
1569 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1570 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 1571 | device->driver_data = data; |
1da177e4 LT |
1572 | |
1573 | data->device_id = device_id; | |
1574 | data->video = video; | |
1575 | data->dev = device; | |
1576 | ||
82cae999 RZ |
1577 | attribute = acpi_video_get_device_attr(video, device_id); |
1578 | ||
1579 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1580 | switch (attribute->display_type) { | |
1581 | case ACPI_VIDEO_DISPLAY_CRT: | |
1582 | data->flags.crt = 1; | |
1583 | break; | |
1584 | case ACPI_VIDEO_DISPLAY_TV: | |
1585 | data->flags.tvout = 1; | |
1586 | break; | |
1587 | case ACPI_VIDEO_DISPLAY_DVI: | |
1588 | data->flags.dvi = 1; | |
1589 | break; | |
1590 | case ACPI_VIDEO_DISPLAY_LCD: | |
1591 | data->flags.lcd = 1; | |
1592 | break; | |
1593 | default: | |
1594 | data->flags.unknown = 1; | |
1595 | break; | |
1596 | } | |
1597 | if(attribute->bios_can_detect) | |
1598 | data->flags.bios = 1; | |
1599 | } else | |
1da177e4 | 1600 | data->flags.unknown = 1; |
4be44fcd | 1601 | |
1da177e4 LT |
1602 | acpi_video_device_bind(video, data); |
1603 | acpi_video_device_find_cap(data); | |
1604 | ||
90130268 | 1605 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1606 | ACPI_DEVICE_NOTIFY, |
1607 | acpi_video_device_notify, | |
1608 | data); | |
1da177e4 | 1609 | if (ACPI_FAILURE(status)) { |
55ac9a01 LM |
1610 | printk(KERN_ERR PREFIX |
1611 | "Error installing notify handler\n"); | |
973bf491 YL |
1612 | if(data->brightness) |
1613 | kfree(data->brightness->levels); | |
1614 | kfree(data->brightness); | |
1615 | kfree(data); | |
1616 | return -ENODEV; | |
1da177e4 LT |
1617 | } |
1618 | ||
bbac81f5 | 1619 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1620 | list_add_tail(&data->entry, &video->video_device_list); |
bbac81f5 | 1621 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1622 | |
1623 | acpi_video_device_add_fs(device); | |
1624 | ||
d550d98d | 1625 | return 0; |
1da177e4 LT |
1626 | } |
1627 | ||
d550d98d | 1628 | return -ENOENT; |
1da177e4 LT |
1629 | } |
1630 | ||
1631 | /* | |
1632 | * Arg: | |
1633 | * video : video bus device | |
1634 | * | |
1635 | * Return: | |
1636 | * none | |
1637 | * | |
1638 | * Enumerate the video device list of the video bus, | |
1639 | * bind the ids with the corresponding video devices | |
1640 | * under the video bus. | |
4be44fcd | 1641 | */ |
1da177e4 | 1642 | |
4be44fcd | 1643 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1644 | { |
ff102ea9 DT |
1645 | struct acpi_video_device *dev; |
1646 | ||
bbac81f5 | 1647 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1648 | |
1649 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1650 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1651 | |
bbac81f5 | 1652 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1653 | } |
1654 | ||
1655 | /* | |
1656 | * Arg: | |
1657 | * video : video bus device | |
1658 | * device : video output device under the video | |
1659 | * bus | |
1660 | * | |
1661 | * Return: | |
1662 | * none | |
1663 | * | |
1664 | * Bind the ids with the corresponding video devices | |
1665 | * under the video bus. | |
4be44fcd | 1666 | */ |
1da177e4 LT |
1667 | |
1668 | static void | |
4be44fcd LB |
1669 | acpi_video_device_bind(struct acpi_video_bus *video, |
1670 | struct acpi_video_device *device) | |
1da177e4 | 1671 | { |
78eed028 | 1672 | struct acpi_video_enumerated_device *ids; |
4be44fcd | 1673 | int i; |
1da177e4 | 1674 | |
78eed028 DT |
1675 | for (i = 0; i < video->attached_count; i++) { |
1676 | ids = &video->attached_array[i]; | |
1677 | if (device->device_id == (ids->value.int_val & 0xffff)) { | |
1678 | ids->bind_info = device; | |
1da177e4 LT |
1679 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); |
1680 | } | |
1681 | } | |
1da177e4 LT |
1682 | } |
1683 | ||
1684 | /* | |
1685 | * Arg: | |
1686 | * video : video bus device | |
1687 | * | |
1688 | * Return: | |
1689 | * < 0 : error | |
1690 | * | |
1691 | * Call _DOD to enumerate all devices attached to display adapter | |
1692 | * | |
4be44fcd | 1693 | */ |
1da177e4 LT |
1694 | |
1695 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1696 | { | |
4be44fcd LB |
1697 | int status; |
1698 | int count; | |
1699 | int i; | |
78eed028 | 1700 | struct acpi_video_enumerated_device *active_list; |
4be44fcd LB |
1701 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1702 | union acpi_object *dod = NULL; | |
1703 | union acpi_object *obj; | |
1da177e4 | 1704 | |
90130268 | 1705 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1706 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1707 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1708 | return status; |
1da177e4 LT |
1709 | } |
1710 | ||
50dd0969 | 1711 | dod = buffer.pointer; |
1da177e4 | 1712 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1713 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1714 | status = -EFAULT; |
1715 | goto out; | |
1716 | } | |
1717 | ||
1718 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1719 | dod->package.count)); |
1da177e4 | 1720 | |
78eed028 DT |
1721 | active_list = kcalloc(1 + dod->package.count, |
1722 | sizeof(struct acpi_video_enumerated_device), | |
1723 | GFP_KERNEL); | |
1724 | if (!active_list) { | |
1da177e4 LT |
1725 | status = -ENOMEM; |
1726 | goto out; | |
1727 | } | |
1728 | ||
1729 | count = 0; | |
1730 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1731 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1732 | |
1733 | if (obj->type != ACPI_TYPE_INTEGER) { | |
78eed028 DT |
1734 | printk(KERN_ERR PREFIX |
1735 | "Invalid _DOD data in element %d\n", i); | |
1736 | continue; | |
1da177e4 | 1737 | } |
78eed028 DT |
1738 | |
1739 | active_list[count].value.int_val = obj->integer.value; | |
1740 | active_list[count].bind_info = NULL; | |
4be44fcd LB |
1741 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1742 | (int)obj->integer.value)); | |
1da177e4 LT |
1743 | count++; |
1744 | } | |
1da177e4 | 1745 | |
6044ec88 | 1746 | kfree(video->attached_array); |
4be44fcd | 1747 | |
78eed028 | 1748 | video->attached_array = active_list; |
1da177e4 | 1749 | video->attached_count = count; |
78eed028 DT |
1750 | |
1751 | out: | |
02438d87 | 1752 | kfree(buffer.pointer); |
d550d98d | 1753 | return status; |
1da177e4 LT |
1754 | } |
1755 | ||
4be44fcd LB |
1756 | static int |
1757 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1758 | u32 level_current, u32 event) | |
1da177e4 | 1759 | { |
63f0edfc | 1760 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
1761 | max = max_below = 0; |
1762 | min = min_above = 255; | |
63f0edfc | 1763 | /* Find closest level to level_current */ |
0a3db1ce | 1764 | for (i = 2; i < device->brightness->count; i++) { |
63f0edfc AS |
1765 | l = device->brightness->levels[i]; |
1766 | if (abs(l - level_current) < abs(delta)) { | |
1767 | delta = l - level_current; | |
1768 | if (!delta) | |
1769 | break; | |
1770 | } | |
1771 | } | |
1772 | /* Ajust level_current to closest available level */ | |
1773 | level_current += delta; | |
0a3db1ce | 1774 | for (i = 2; i < device->brightness->count; i++) { |
f4715189 TT |
1775 | l = device->brightness->levels[i]; |
1776 | if (l < min) | |
1777 | min = l; | |
1778 | if (l > max) | |
1779 | max = l; | |
1780 | if (l < min_above && l > level_current) | |
1781 | min_above = l; | |
1782 | if (l > max_below && l < level_current) | |
1783 | max_below = l; | |
1784 | } | |
1785 | ||
1786 | switch (event) { | |
1787 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1788 | return (level_current < max) ? min_above : min; | |
1789 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1790 | return (level_current < max) ? min_above : max; | |
1791 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1792 | return (level_current > min) ? max_below : min; | |
1793 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1794 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1795 | return 0; | |
1796 | default: | |
1797 | return level_current; | |
1798 | } | |
1da177e4 LT |
1799 | } |
1800 | ||
c8890f90 | 1801 | static int |
4be44fcd | 1802 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 | 1803 | { |
27663c58 | 1804 | unsigned long long level_current, level_next; |
c8890f90 ZR |
1805 | int result = -EINVAL; |
1806 | ||
469778c1 | 1807 | if (!device->brightness) |
c8890f90 ZR |
1808 | goto out; |
1809 | ||
1810 | result = acpi_video_device_lcd_get_level_current(device, | |
1811 | &level_current); | |
1812 | if (result) | |
1813 | goto out; | |
1814 | ||
1da177e4 | 1815 | level_next = acpi_video_get_next_level(device, level_current, event); |
c8890f90 | 1816 | |
24450c7a | 1817 | result = acpi_video_device_lcd_set_level(device, level_next); |
c8890f90 ZR |
1818 | |
1819 | out: | |
1820 | if (result) | |
1821 | printk(KERN_ERR PREFIX "Failed to switch the brightness\n"); | |
1822 | ||
1823 | return result; | |
1da177e4 LT |
1824 | } |
1825 | ||
1826 | static int | |
4be44fcd LB |
1827 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1828 | struct acpi_device *device) | |
1da177e4 | 1829 | { |
4be44fcd | 1830 | int status = 0; |
ff102ea9 | 1831 | struct acpi_device *dev; |
1da177e4 LT |
1832 | |
1833 | acpi_video_device_enumerate(video); | |
1834 | ||
ff102ea9 | 1835 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
1836 | |
1837 | status = acpi_video_bus_get_one_device(dev, video); | |
1838 | if (ACPI_FAILURE(status)) { | |
55ac9a01 LM |
1839 | printk(KERN_WARNING PREFIX |
1840 | "Cant attach device"); | |
1da177e4 LT |
1841 | continue; |
1842 | } | |
1da177e4 | 1843 | } |
d550d98d | 1844 | return status; |
1da177e4 LT |
1845 | } |
1846 | ||
4be44fcd | 1847 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1848 | { |
031ec77b | 1849 | acpi_status status; |
1da177e4 LT |
1850 | struct acpi_video_bus *video; |
1851 | ||
1da177e4 LT |
1852 | |
1853 | if (!device || !device->video) | |
d550d98d | 1854 | return -ENOENT; |
1da177e4 LT |
1855 | |
1856 | video = device->video; | |
1857 | ||
1da177e4 LT |
1858 | acpi_video_device_remove_fs(device->dev); |
1859 | ||
90130268 | 1860 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1861 | ACPI_DEVICE_NOTIFY, |
1862 | acpi_video_device_notify); | |
599a52d1 | 1863 | backlight_device_unregister(device->backlight); |
702ed512 ZR |
1864 | if (device->cdev) { |
1865 | sysfs_remove_link(&device->dev->dev.kobj, | |
1866 | "thermal_cooling"); | |
1867 | sysfs_remove_link(&device->cdev->device.kobj, | |
1868 | "device"); | |
1869 | thermal_cooling_device_unregister(device->cdev); | |
1870 | device->cdev = NULL; | |
1871 | } | |
23b0f015 | 1872 | video_output_unregister(device->output_dev); |
ff102ea9 | 1873 | |
d550d98d | 1874 | return 0; |
1da177e4 LT |
1875 | } |
1876 | ||
4be44fcd | 1877 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1878 | { |
4be44fcd | 1879 | int status; |
ff102ea9 | 1880 | struct acpi_video_device *dev, *next; |
1da177e4 | 1881 | |
bbac81f5 | 1882 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1883 | |
ff102ea9 | 1884 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 1885 | |
ff102ea9 | 1886 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
1887 | if (ACPI_FAILURE(status)) |
1888 | printk(KERN_WARNING PREFIX | |
1889 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1890 | |
ff102ea9 DT |
1891 | if (dev->brightness) { |
1892 | kfree(dev->brightness->levels); | |
1893 | kfree(dev->brightness); | |
1894 | } | |
1895 | list_del(&dev->entry); | |
1896 | kfree(dev); | |
1da177e4 LT |
1897 | } |
1898 | ||
bbac81f5 | 1899 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1900 | |
d550d98d | 1901 | return 0; |
1da177e4 LT |
1902 | } |
1903 | ||
1904 | /* acpi_video interface */ | |
1905 | ||
4be44fcd | 1906 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 1907 | { |
a21101c4 | 1908 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
1909 | } |
1910 | ||
4be44fcd | 1911 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1912 | { |
1913 | return acpi_video_bus_DOS(video, 0, 1); | |
1914 | } | |
1915 | ||
4be44fcd | 1916 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1917 | { |
50dd0969 | 1918 | struct acpi_video_bus *video = data; |
4be44fcd | 1919 | struct acpi_device *device = NULL; |
e9dab196 LY |
1920 | struct input_dev *input; |
1921 | int keycode; | |
1922 | ||
1da177e4 | 1923 | if (!video) |
d550d98d | 1924 | return; |
1da177e4 | 1925 | |
e6afa0de | 1926 | device = video->device; |
e9dab196 | 1927 | input = video->input; |
1da177e4 LT |
1928 | |
1929 | switch (event) { | |
98fb8fe1 | 1930 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 1931 | * most likely via hotkey. */ |
14e04fb3 | 1932 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1933 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1934 | break; |
1935 | ||
98fb8fe1 | 1936 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1937 | * connector. */ |
1938 | acpi_video_device_enumerate(video); | |
1939 | acpi_video_device_rebind(video); | |
14e04fb3 | 1940 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1941 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1942 | break; |
1943 | ||
4be44fcd | 1944 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
25c87f7f | 1945 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1946 | keycode = KEY_SWITCHVIDEOMODE; |
1947 | break; | |
4be44fcd | 1948 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
25c87f7f | 1949 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1950 | keycode = KEY_VIDEO_NEXT; |
1951 | break; | |
4be44fcd | 1952 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
14e04fb3 | 1953 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1954 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
1955 | break; |
1956 | ||
1957 | default: | |
e9dab196 | 1958 | keycode = KEY_UNKNOWN; |
1da177e4 | 1959 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 1960 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1961 | break; |
1962 | } | |
1963 | ||
7761f638 | 1964 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
1965 | input_report_key(input, keycode, 1); |
1966 | input_sync(input); | |
1967 | input_report_key(input, keycode, 0); | |
1968 | input_sync(input); | |
1969 | ||
d550d98d | 1970 | return; |
1da177e4 LT |
1971 | } |
1972 | ||
4be44fcd | 1973 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1974 | { |
50dd0969 | 1975 | struct acpi_video_device *video_device = data; |
4be44fcd | 1976 | struct acpi_device *device = NULL; |
e9dab196 LY |
1977 | struct acpi_video_bus *bus; |
1978 | struct input_dev *input; | |
1979 | int keycode; | |
1da177e4 | 1980 | |
1da177e4 | 1981 | if (!video_device) |
d550d98d | 1982 | return; |
1da177e4 | 1983 | |
e6afa0de | 1984 | device = video_device->dev; |
e9dab196 LY |
1985 | bus = video_device->video; |
1986 | input = bus->input; | |
1da177e4 LT |
1987 | |
1988 | switch (event) { | |
4be44fcd | 1989 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
8a681a4d ZR |
1990 | if (brightness_switch_enabled) |
1991 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1992 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1993 | keycode = KEY_BRIGHTNESS_CYCLE; |
1994 | break; | |
4be44fcd | 1995 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
8a681a4d ZR |
1996 | if (brightness_switch_enabled) |
1997 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1998 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1999 | keycode = KEY_BRIGHTNESSUP; |
2000 | break; | |
4be44fcd | 2001 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease 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_BRIGHTNESSDOWN; |
2006 | break; | |
4be44fcd | 2007 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
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_BRIGHTNESS_ZERO; |
2012 | break; | |
4be44fcd | 2013 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
8a681a4d ZR |
2014 | if (brightness_switch_enabled) |
2015 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 2016 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2017 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
2018 | break; |
2019 | default: | |
e9dab196 | 2020 | keycode = KEY_UNKNOWN; |
1da177e4 | 2021 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 2022 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
2023 | break; |
2024 | } | |
e9dab196 | 2025 | |
7761f638 | 2026 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
2027 | input_report_key(input, keycode, 1); |
2028 | input_sync(input); | |
2029 | input_report_key(input, keycode, 0); | |
2030 | input_sync(input); | |
2031 | ||
d550d98d | 2032 | return; |
1da177e4 LT |
2033 | } |
2034 | ||
e6d9da1d | 2035 | static int instance; |
863c1490 MG |
2036 | static int acpi_video_resume(struct acpi_device *device) |
2037 | { | |
2038 | struct acpi_video_bus *video; | |
2039 | struct acpi_video_device *video_device; | |
2040 | int i; | |
2041 | ||
2042 | if (!device || !acpi_driver_data(device)) | |
2043 | return -EINVAL; | |
2044 | ||
2045 | video = acpi_driver_data(device); | |
2046 | ||
2047 | for (i = 0; i < video->attached_count; i++) { | |
2048 | video_device = video->attached_array[i].bind_info; | |
2049 | if (video_device && video_device->backlight) | |
2050 | acpi_video_set_brightness(video_device->backlight); | |
2051 | } | |
2052 | return AE_OK; | |
2053 | } | |
2054 | ||
4be44fcd | 2055 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 2056 | { |
f51e8391 DT |
2057 | acpi_status status; |
2058 | struct acpi_video_bus *video; | |
e9dab196 | 2059 | struct input_dev *input; |
f51e8391 | 2060 | int error; |
1da177e4 | 2061 | |
36bcbec7 | 2062 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 2063 | if (!video) |
d550d98d | 2064 | return -ENOMEM; |
1da177e4 | 2065 | |
e6d9da1d ZR |
2066 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
2067 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
2068 | if (instance) | |
2069 | device->pnp.bus_id[3] = '0' + instance; | |
2070 | instance ++; | |
2071 | } | |
f3b39f13 ZY |
2072 | /* a hack to fix the duplicate name "VGA" problem on Pa 3553 */ |
2073 | if (!strcmp(device->pnp.bus_id, "VGA")) { | |
2074 | if (instance) | |
2075 | device->pnp.bus_id[3] = '0' + instance; | |
2076 | instance++; | |
2077 | } | |
e6d9da1d | 2078 | |
e6afa0de | 2079 | video->device = device; |
1da177e4 LT |
2080 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
2081 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 2082 | device->driver_data = video; |
1da177e4 LT |
2083 | |
2084 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
2085 | error = acpi_video_bus_check(video); |
2086 | if (error) | |
2087 | goto err_free_video; | |
1da177e4 | 2088 | |
f51e8391 DT |
2089 | error = acpi_video_bus_add_fs(device); |
2090 | if (error) | |
2091 | goto err_free_video; | |
1da177e4 | 2092 | |
bbac81f5 | 2093 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
2094 | INIT_LIST_HEAD(&video->video_device_list); |
2095 | ||
2096 | acpi_video_bus_get_devices(video, device); | |
2097 | acpi_video_bus_start_devices(video); | |
2098 | ||
90130268 | 2099 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
2100 | ACPI_DEVICE_NOTIFY, |
2101 | acpi_video_bus_notify, video); | |
1da177e4 | 2102 | if (ACPI_FAILURE(status)) { |
55ac9a01 LM |
2103 | printk(KERN_ERR PREFIX |
2104 | "Error installing notify handler\n"); | |
f51e8391 DT |
2105 | error = -ENODEV; |
2106 | goto err_stop_video; | |
1da177e4 LT |
2107 | } |
2108 | ||
e9dab196 | 2109 | video->input = input = input_allocate_device(); |
f51e8391 DT |
2110 | if (!input) { |
2111 | error = -ENOMEM; | |
2112 | goto err_uninstall_notify; | |
2113 | } | |
e9dab196 LY |
2114 | |
2115 | snprintf(video->phys, sizeof(video->phys), | |
2116 | "%s/video/input0", acpi_device_hid(video->device)); | |
2117 | ||
2118 | input->name = acpi_device_name(video->device); | |
2119 | input->phys = video->phys; | |
2120 | input->id.bustype = BUS_HOST; | |
2121 | input->id.product = 0x06; | |
91c05c66 | 2122 | input->dev.parent = &device->dev; |
e9dab196 LY |
2123 | input->evbit[0] = BIT(EV_KEY); |
2124 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
2125 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
2126 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
2127 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
2128 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
2129 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
2130 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
2131 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
2132 | set_bit(KEY_UNKNOWN, input->keybit); | |
e9dab196 | 2133 | |
f51e8391 DT |
2134 | error = input_register_device(input); |
2135 | if (error) | |
2136 | goto err_free_input_dev; | |
e9dab196 | 2137 | |
1da177e4 | 2138 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
2139 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
2140 | video->flags.multihead ? "yes" : "no", | |
2141 | video->flags.rom ? "yes" : "no", | |
2142 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 2143 | |
f51e8391 DT |
2144 | return 0; |
2145 | ||
2146 | err_free_input_dev: | |
2147 | input_free_device(input); | |
2148 | err_uninstall_notify: | |
2149 | acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, | |
2150 | acpi_video_bus_notify); | |
2151 | err_stop_video: | |
2152 | acpi_video_bus_stop_devices(video); | |
2153 | acpi_video_bus_put_devices(video); | |
2154 | kfree(video->attached_array); | |
2155 | acpi_video_bus_remove_fs(device); | |
2156 | err_free_video: | |
2157 | kfree(video); | |
db89b4f0 | 2158 | device->driver_data = NULL; |
1da177e4 | 2159 | |
f51e8391 | 2160 | return error; |
1da177e4 LT |
2161 | } |
2162 | ||
4be44fcd | 2163 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 2164 | { |
4be44fcd LB |
2165 | acpi_status status = 0; |
2166 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 2167 | |
1da177e4 LT |
2168 | |
2169 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 2170 | return -EINVAL; |
1da177e4 | 2171 | |
50dd0969 | 2172 | video = acpi_driver_data(device); |
1da177e4 LT |
2173 | |
2174 | acpi_video_bus_stop_devices(video); | |
2175 | ||
90130268 | 2176 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
2177 | ACPI_DEVICE_NOTIFY, |
2178 | acpi_video_bus_notify); | |
1da177e4 LT |
2179 | |
2180 | acpi_video_bus_put_devices(video); | |
2181 | acpi_video_bus_remove_fs(device); | |
2182 | ||
e9dab196 | 2183 | input_unregister_device(video->input); |
6044ec88 | 2184 | kfree(video->attached_array); |
1da177e4 LT |
2185 | kfree(video); |
2186 | ||
d550d98d | 2187 | return 0; |
1da177e4 LT |
2188 | } |
2189 | ||
4be44fcd | 2190 | static int __init acpi_video_init(void) |
1da177e4 | 2191 | { |
4be44fcd | 2192 | int result = 0; |
1da177e4 | 2193 | |
1da177e4 LT |
2194 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); |
2195 | if (!acpi_video_dir) | |
d550d98d | 2196 | return -ENODEV; |
1da177e4 LT |
2197 | acpi_video_dir->owner = THIS_MODULE; |
2198 | ||
2199 | result = acpi_bus_register_driver(&acpi_video_bus); | |
2200 | if (result < 0) { | |
2201 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 2202 | return -ENODEV; |
1da177e4 LT |
2203 | } |
2204 | ||
d550d98d | 2205 | return 0; |
1da177e4 LT |
2206 | } |
2207 | ||
4be44fcd | 2208 | static void __exit acpi_video_exit(void) |
1da177e4 | 2209 | { |
1da177e4 LT |
2210 | |
2211 | acpi_bus_unregister_driver(&acpi_video_bus); | |
2212 | ||
2213 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2214 | ||
d550d98d | 2215 | return; |
1da177e4 LT |
2216 | } |
2217 | ||
2218 | module_init(acpi_video_init); | |
2219 | module_exit(acpi_video_exit); |