Commit | Line | Data |
---|---|---|
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> | |
32 | #include <linux/proc_fs.h> | |
33 | #include <linux/seq_file.h> | |
34 | ||
2f3d000a | 35 | #include <linux/backlight.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | ||
38 | #include <acpi/acpi_bus.h> | |
39 | #include <acpi/acpi_drivers.h> | |
40 | ||
41 | #define ACPI_VIDEO_COMPONENT 0x08000000 | |
42 | #define ACPI_VIDEO_CLASS "video" | |
1da177e4 LT |
43 | #define ACPI_VIDEO_BUS_NAME "Video Bus" |
44 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" | |
45 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 | |
46 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 | |
47 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 | |
48 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 | |
49 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 | |
50 | ||
f4715189 TT |
51 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85 |
52 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 | |
53 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 | |
54 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88 | |
55 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89 | |
1da177e4 | 56 | |
1da177e4 LT |
57 | #define ACPI_VIDEO_HEAD_INVALID (~0u - 1) |
58 | #define ACPI_VIDEO_HEAD_END (~0u) | |
2f3d000a | 59 | #define MAX_NAME_LEN 20 |
1da177e4 | 60 | |
82cae999 RZ |
61 | #define ACPI_VIDEO_DISPLAY_CRT 1 |
62 | #define ACPI_VIDEO_DISPLAY_TV 2 | |
63 | #define ACPI_VIDEO_DISPLAY_DVI 3 | |
64 | #define ACPI_VIDEO_DISPLAY_LCD 4 | |
65 | ||
1da177e4 | 66 | #define _COMPONENT ACPI_VIDEO_COMPONENT |
f52fd66d | 67 | ACPI_MODULE_NAME("video"); |
1da177e4 | 68 | |
f52fd66d | 69 | MODULE_AUTHOR("Bruno Ducrot"); |
7cda93e0 | 70 | MODULE_DESCRIPTION("ACPI Video Driver"); |
1da177e4 LT |
71 | MODULE_LICENSE("GPL"); |
72 | ||
4be44fcd LB |
73 | static int acpi_video_bus_add(struct acpi_device *device); |
74 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
1da177e4 LT |
75 | |
76 | static struct acpi_driver acpi_video_bus = { | |
c2b6705b | 77 | .name = "video", |
1da177e4 | 78 | .class = ACPI_VIDEO_CLASS, |
ae843332 | 79 | .ids = ACPI_VIDEO_HID, |
1da177e4 LT |
80 | .ops = { |
81 | .add = acpi_video_bus_add, | |
82 | .remove = acpi_video_bus_remove, | |
4be44fcd | 83 | }, |
1da177e4 LT |
84 | }; |
85 | ||
86 | struct acpi_video_bus_flags { | |
4be44fcd LB |
87 | u8 multihead:1; /* can switch video heads */ |
88 | u8 rom:1; /* can retrieve a video rom */ | |
89 | u8 post:1; /* can configure the head to */ | |
90 | u8 reserved:5; | |
1da177e4 LT |
91 | }; |
92 | ||
93 | struct acpi_video_bus_cap { | |
4be44fcd LB |
94 | u8 _DOS:1; /*Enable/Disable output switching */ |
95 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
96 | u8 _ROM:1; /*Get ROM Data */ | |
97 | u8 _GPD:1; /*Get POST Device */ | |
98 | u8 _SPD:1; /*Set POST Device */ | |
99 | u8 _VPO:1; /*Video POST Options */ | |
100 | u8 reserved:2; | |
1da177e4 LT |
101 | }; |
102 | ||
4be44fcd LB |
103 | struct acpi_video_device_attrib { |
104 | u32 display_index:4; /* A zero-based instance of the Display */ | |
98fb8fe1 | 105 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
4be44fcd | 106 | u32 display_type:4; /*Describe the specific type in use */ |
98fb8fe1 | 107 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
4be44fcd LB |
108 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
109 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
110 | the VGA device. */ | |
111 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
112 | u32 reserved:10; /*Must be 0 */ | |
113 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
114 | }; |
115 | ||
116 | struct acpi_video_enumerated_device { | |
117 | union { | |
118 | u32 int_val; | |
4be44fcd | 119 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
120 | } value; |
121 | struct acpi_video_device *bind_info; | |
122 | }; | |
123 | ||
124 | struct acpi_video_bus { | |
e6afa0de | 125 | struct acpi_device *device; |
4be44fcd | 126 | u8 dos_setting; |
1da177e4 | 127 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
128 | u8 attached_count; |
129 | struct acpi_video_bus_cap cap; | |
1da177e4 | 130 | struct acpi_video_bus_flags flags; |
4be44fcd LB |
131 | struct semaphore sem; |
132 | struct list_head video_device_list; | |
133 | struct proc_dir_entry *dir; | |
1da177e4 LT |
134 | }; |
135 | ||
136 | struct acpi_video_device_flags { | |
4be44fcd LB |
137 | u8 crt:1; |
138 | u8 lcd:1; | |
139 | u8 tvout:1; | |
82cae999 | 140 | u8 dvi:1; |
4be44fcd LB |
141 | u8 bios:1; |
142 | u8 unknown:1; | |
82cae999 | 143 | u8 reserved:2; |
1da177e4 LT |
144 | }; |
145 | ||
146 | struct acpi_video_device_cap { | |
4be44fcd LB |
147 | u8 _ADR:1; /*Return the unique ID */ |
148 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
149 | u8 _BCM:1; /*Set the brightness level */ | |
2f3d000a | 150 | u8 _BQC:1; /* Get current brightness level */ |
4be44fcd LB |
151 | u8 _DDC:1; /*Return the EDID for this device */ |
152 | u8 _DCS:1; /*Return status of output device */ | |
153 | u8 _DGS:1; /*Query graphics state */ | |
154 | u8 _DSS:1; /*Device state set */ | |
1da177e4 LT |
155 | }; |
156 | ||
157 | struct acpi_video_device_brightness { | |
4be44fcd LB |
158 | int curr; |
159 | int count; | |
160 | int *levels; | |
1da177e4 LT |
161 | }; |
162 | ||
163 | struct acpi_video_device { | |
4be44fcd LB |
164 | unsigned long device_id; |
165 | struct acpi_video_device_flags flags; | |
166 | struct acpi_video_device_cap cap; | |
167 | struct list_head entry; | |
168 | struct acpi_video_bus *video; | |
169 | struct acpi_device *dev; | |
1da177e4 | 170 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 171 | struct backlight_device *backlight; |
1da177e4 LT |
172 | }; |
173 | ||
1da177e4 LT |
174 | /* bus */ |
175 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
176 | static struct file_operations acpi_video_bus_info_fops = { | |
4be44fcd LB |
177 | .open = acpi_video_bus_info_open_fs, |
178 | .read = seq_read, | |
179 | .llseek = seq_lseek, | |
180 | .release = single_release, | |
1da177e4 LT |
181 | }; |
182 | ||
183 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
184 | static struct file_operations acpi_video_bus_ROM_fops = { | |
4be44fcd LB |
185 | .open = acpi_video_bus_ROM_open_fs, |
186 | .read = seq_read, | |
187 | .llseek = seq_lseek, | |
188 | .release = single_release, | |
1da177e4 LT |
189 | }; |
190 | ||
4be44fcd LB |
191 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
192 | struct file *file); | |
1da177e4 | 193 | static struct file_operations acpi_video_bus_POST_info_fops = { |
4be44fcd LB |
194 | .open = acpi_video_bus_POST_info_open_fs, |
195 | .read = seq_read, | |
196 | .llseek = seq_lseek, | |
197 | .release = single_release, | |
1da177e4 LT |
198 | }; |
199 | ||
200 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
201 | static struct file_operations acpi_video_bus_POST_fops = { | |
4be44fcd LB |
202 | .open = acpi_video_bus_POST_open_fs, |
203 | .read = seq_read, | |
204 | .llseek = seq_lseek, | |
205 | .release = single_release, | |
1da177e4 LT |
206 | }; |
207 | ||
1da177e4 LT |
208 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
209 | static struct file_operations acpi_video_bus_DOS_fops = { | |
4be44fcd LB |
210 | .open = acpi_video_bus_DOS_open_fs, |
211 | .read = seq_read, | |
212 | .llseek = seq_lseek, | |
213 | .release = single_release, | |
1da177e4 LT |
214 | }; |
215 | ||
216 | /* device */ | |
4be44fcd LB |
217 | static int acpi_video_device_info_open_fs(struct inode *inode, |
218 | struct file *file); | |
1da177e4 | 219 | static struct file_operations acpi_video_device_info_fops = { |
4be44fcd LB |
220 | .open = acpi_video_device_info_open_fs, |
221 | .read = seq_read, | |
222 | .llseek = seq_lseek, | |
223 | .release = single_release, | |
1da177e4 LT |
224 | }; |
225 | ||
4be44fcd LB |
226 | static int acpi_video_device_state_open_fs(struct inode *inode, |
227 | struct file *file); | |
1da177e4 | 228 | static struct file_operations acpi_video_device_state_fops = { |
4be44fcd LB |
229 | .open = acpi_video_device_state_open_fs, |
230 | .read = seq_read, | |
231 | .llseek = seq_lseek, | |
232 | .release = single_release, | |
1da177e4 LT |
233 | }; |
234 | ||
4be44fcd LB |
235 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
236 | struct file *file); | |
1da177e4 | 237 | static struct file_operations acpi_video_device_brightness_fops = { |
4be44fcd LB |
238 | .open = acpi_video_device_brightness_open_fs, |
239 | .read = seq_read, | |
240 | .llseek = seq_lseek, | |
241 | .release = single_release, | |
1da177e4 LT |
242 | }; |
243 | ||
4be44fcd LB |
244 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
245 | struct file *file); | |
1da177e4 | 246 | static struct file_operations acpi_video_device_EDID_fops = { |
4be44fcd LB |
247 | .open = acpi_video_device_EDID_open_fs, |
248 | .read = seq_read, | |
249 | .llseek = seq_lseek, | |
250 | .release = single_release, | |
1da177e4 LT |
251 | }; |
252 | ||
4be44fcd | 253 | static char device_decode[][30] = { |
1da177e4 LT |
254 | "motherboard VGA device", |
255 | "PCI VGA device", | |
256 | "AGP VGA device", | |
257 | "UNKNOWN", | |
258 | }; | |
259 | ||
4be44fcd LB |
260 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
261 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
262 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
263 | struct acpi_video_device *device); | |
1da177e4 | 264 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
4be44fcd | 265 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event); |
2f3d000a YL |
266 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
267 | int level); | |
268 | static int acpi_video_device_lcd_get_level_current( | |
269 | struct acpi_video_device *device, | |
270 | unsigned long *level); | |
4be44fcd LB |
271 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
272 | u32 level_current, u32 event); | |
273 | static void acpi_video_switch_brightness(struct acpi_video_device *device, | |
274 | int event); | |
1da177e4 | 275 | |
2f3d000a YL |
276 | /*backlight device sysfs support*/ |
277 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
278 | { | |
279 | unsigned long cur_level; | |
280 | struct acpi_video_device *vd = | |
281 | (struct acpi_video_device *)class_get_devdata(&bd->class_dev); | |
282 | acpi_video_device_lcd_get_level_current(vd, &cur_level); | |
283 | return (int) cur_level; | |
284 | } | |
285 | ||
286 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
287 | { | |
599a52d1 | 288 | int request_level = bd->props.brightness; |
2f3d000a YL |
289 | struct acpi_video_device *vd = |
290 | (struct acpi_video_device *)class_get_devdata(&bd->class_dev); | |
291 | acpi_video_device_lcd_set_level(vd, request_level); | |
292 | return 0; | |
293 | } | |
294 | ||
599a52d1 RP |
295 | static struct backlight_ops acpi_backlight_ops = { |
296 | .get_brightness = acpi_video_get_brightness, | |
297 | .update_status = acpi_video_set_brightness, | |
298 | }; | |
299 | ||
1da177e4 LT |
300 | /* -------------------------------------------------------------------------- |
301 | Video Management | |
302 | -------------------------------------------------------------------------- */ | |
303 | ||
304 | /* device */ | |
305 | ||
306 | static int | |
4be44fcd | 307 | acpi_video_device_query(struct acpi_video_device *device, unsigned long *state) |
1da177e4 | 308 | { |
4be44fcd | 309 | int status; |
90130268 PM |
310 | |
311 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 312 | |
d550d98d | 313 | return status; |
1da177e4 LT |
314 | } |
315 | ||
316 | static int | |
4be44fcd LB |
317 | acpi_video_device_get_state(struct acpi_video_device *device, |
318 | unsigned long *state) | |
1da177e4 | 319 | { |
4be44fcd | 320 | int status; |
1da177e4 | 321 | |
90130268 | 322 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 323 | |
d550d98d | 324 | return status; |
1da177e4 LT |
325 | } |
326 | ||
327 | static int | |
4be44fcd | 328 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 329 | { |
4be44fcd LB |
330 | int status; |
331 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
332 | struct acpi_object_list args = { 1, &arg0 }; | |
824b558b | 333 | unsigned long ret; |
1da177e4 | 334 | |
1da177e4 LT |
335 | |
336 | arg0.integer.value = state; | |
90130268 | 337 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 338 | |
d550d98d | 339 | return status; |
1da177e4 LT |
340 | } |
341 | ||
342 | static int | |
4be44fcd LB |
343 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
344 | union acpi_object **levels) | |
1da177e4 | 345 | { |
4be44fcd LB |
346 | int status; |
347 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
348 | union acpi_object *obj; | |
1da177e4 | 349 | |
1da177e4 LT |
350 | |
351 | *levels = NULL; | |
352 | ||
90130268 | 353 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 354 | if (!ACPI_SUCCESS(status)) |
d550d98d | 355 | return status; |
4be44fcd | 356 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 357 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 358 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
359 | status = -EFAULT; |
360 | goto err; | |
361 | } | |
362 | ||
363 | *levels = obj; | |
364 | ||
d550d98d | 365 | return 0; |
1da177e4 | 366 | |
4be44fcd | 367 | err: |
6044ec88 | 368 | kfree(buffer.pointer); |
1da177e4 | 369 | |
d550d98d | 370 | return status; |
1da177e4 LT |
371 | } |
372 | ||
373 | static int | |
4be44fcd | 374 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 375 | { |
4be44fcd LB |
376 | int status; |
377 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
378 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 379 | |
1da177e4 LT |
380 | |
381 | arg0.integer.value = level; | |
90130268 | 382 | status = acpi_evaluate_object(device->dev->handle, "_BCM", &args, NULL); |
1da177e4 LT |
383 | |
384 | printk(KERN_DEBUG "set_level status: %x\n", status); | |
d550d98d | 385 | return status; |
1da177e4 LT |
386 | } |
387 | ||
388 | static int | |
4be44fcd LB |
389 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
390 | unsigned long *level) | |
1da177e4 | 391 | { |
4be44fcd | 392 | int status; |
1da177e4 | 393 | |
90130268 | 394 | status = acpi_evaluate_integer(device->dev->handle, "_BQC", NULL, level); |
1da177e4 | 395 | |
d550d98d | 396 | return status; |
1da177e4 LT |
397 | } |
398 | ||
399 | static int | |
4be44fcd LB |
400 | acpi_video_device_EDID(struct acpi_video_device *device, |
401 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 402 | { |
4be44fcd LB |
403 | int status; |
404 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
405 | union acpi_object *obj; | |
406 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
407 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 408 | |
1da177e4 LT |
409 | |
410 | *edid = NULL; | |
411 | ||
412 | if (!device) | |
d550d98d | 413 | return -ENODEV; |
1da177e4 LT |
414 | if (length == 128) |
415 | arg0.integer.value = 1; | |
416 | else if (length == 256) | |
417 | arg0.integer.value = 2; | |
418 | else | |
d550d98d | 419 | return -EINVAL; |
1da177e4 | 420 | |
90130268 | 421 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 422 | if (ACPI_FAILURE(status)) |
d550d98d | 423 | return -ENODEV; |
1da177e4 | 424 | |
50dd0969 | 425 | obj = buffer.pointer; |
1da177e4 LT |
426 | |
427 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
428 | *edid = obj; | |
429 | else { | |
6468463a | 430 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
431 | status = -EFAULT; |
432 | kfree(obj); | |
433 | } | |
434 | ||
d550d98d | 435 | return status; |
1da177e4 LT |
436 | } |
437 | ||
1da177e4 LT |
438 | /* bus */ |
439 | ||
440 | static int | |
4be44fcd | 441 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 442 | { |
4be44fcd LB |
443 | int status; |
444 | unsigned long tmp; | |
445 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
446 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 447 | |
1da177e4 LT |
448 | |
449 | arg0.integer.value = option; | |
450 | ||
90130268 | 451 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 452 | if (ACPI_SUCCESS(status)) |
4be44fcd | 453 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 454 | |
d550d98d | 455 | return status; |
1da177e4 LT |
456 | } |
457 | ||
458 | static int | |
4be44fcd | 459 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) |
1da177e4 LT |
460 | { |
461 | int status; | |
462 | ||
90130268 | 463 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 464 | |
d550d98d | 465 | return status; |
1da177e4 LT |
466 | } |
467 | ||
468 | static int | |
4be44fcd LB |
469 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
470 | unsigned long *options) | |
1da177e4 | 471 | { |
4be44fcd | 472 | int status; |
1da177e4 | 473 | |
90130268 | 474 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
475 | *options &= 3; |
476 | ||
d550d98d | 477 | return status; |
1da177e4 LT |
478 | } |
479 | ||
480 | /* | |
481 | * Arg: | |
482 | * video : video bus device pointer | |
483 | * bios_flag : | |
484 | * 0. The system BIOS should NOT automatically switch(toggle) | |
485 | * the active display output. | |
486 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 487 | * active display output. No switch event. |
1da177e4 LT |
488 | * 2. The _DGS value should be locked. |
489 | * 3. The system BIOS should not automatically switch (toggle) the | |
490 | * active display output, but instead generate the display switch | |
491 | * event notify code. | |
492 | * lcd_flag : | |
493 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 494 | * of the LCD when the power changes from AC to DC |
1da177e4 | 495 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 496 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
497 | * Return Value: |
498 | * -1 wrong arg. | |
499 | */ | |
500 | ||
501 | static int | |
4be44fcd | 502 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 503 | { |
4be44fcd LB |
504 | acpi_integer status = 0; |
505 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
506 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 507 | |
1da177e4 | 508 | |
4be44fcd | 509 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
510 | status = -1; |
511 | goto Failed; | |
512 | } | |
513 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
514 | video->dos_setting = arg0.integer.value; | |
90130268 | 515 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 516 | |
4be44fcd | 517 | Failed: |
d550d98d | 518 | return status; |
1da177e4 LT |
519 | } |
520 | ||
521 | /* | |
522 | * Arg: | |
523 | * device : video output device (LCD, CRT, ..) | |
524 | * | |
525 | * Return Value: | |
526 | * None | |
527 | * | |
98fb8fe1 | 528 | * Find out all required AML methods defined under the output |
1da177e4 LT |
529 | * device. |
530 | */ | |
531 | ||
4be44fcd | 532 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 533 | { |
4be44fcd | 534 | acpi_integer status; |
1da177e4 LT |
535 | acpi_handle h_dummy1; |
536 | int i; | |
2f3d000a | 537 | u32 max_level = 0; |
1da177e4 LT |
538 | union acpi_object *obj = NULL; |
539 | struct acpi_video_device_brightness *br = NULL; | |
540 | ||
1da177e4 | 541 | |
4be44fcd | 542 | memset(&device->cap, 0, 4); |
1da177e4 | 543 | |
90130268 | 544 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
545 | device->cap._ADR = 1; |
546 | } | |
90130268 | 547 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 548 | device->cap._BCL = 1; |
1da177e4 | 549 | } |
90130268 | 550 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 551 | device->cap._BCM = 1; |
1da177e4 | 552 | } |
2f3d000a YL |
553 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
554 | device->cap._BQC = 1; | |
90130268 | 555 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 556 | device->cap._DDC = 1; |
1da177e4 | 557 | } |
90130268 | 558 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
559 | device->cap._DCS = 1; |
560 | } | |
90130268 | 561 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
562 | device->cap._DGS = 1; |
563 | } | |
90130268 | 564 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
565 | device->cap._DSS = 1; |
566 | } | |
567 | ||
568 | status = acpi_video_device_lcd_query_levels(device, &obj); | |
569 | ||
570 | if (obj && obj->type == ACPI_TYPE_PACKAGE && obj->package.count >= 2) { | |
571 | int count = 0; | |
572 | union acpi_object *o; | |
4be44fcd | 573 | |
36bcbec7 | 574 | br = kzalloc(sizeof(*br), GFP_KERNEL); |
1da177e4 LT |
575 | if (!br) { |
576 | printk(KERN_ERR "can't allocate memory\n"); | |
577 | } else { | |
d1dd0c23 | 578 | br->levels = kmalloc(obj->package.count * |
4be44fcd | 579 | sizeof *(br->levels), GFP_KERNEL); |
1da177e4 LT |
580 | if (!br->levels) |
581 | goto out; | |
582 | ||
583 | for (i = 0; i < obj->package.count; i++) { | |
4be44fcd LB |
584 | o = (union acpi_object *)&obj->package. |
585 | elements[i]; | |
1da177e4 | 586 | if (o->type != ACPI_TYPE_INTEGER) { |
6468463a | 587 | printk(KERN_ERR PREFIX "Invalid data\n"); |
1da177e4 LT |
588 | continue; |
589 | } | |
590 | br->levels[count] = (u32) o->integer.value; | |
2f3d000a YL |
591 | if (br->levels[count] > max_level) |
592 | max_level = br->levels[count]; | |
1da177e4 LT |
593 | count++; |
594 | } | |
4be44fcd | 595 | out: |
1da177e4 | 596 | if (count < 2) { |
d1dd0c23 | 597 | kfree(br->levels); |
1da177e4 LT |
598 | kfree(br); |
599 | } else { | |
600 | br->count = count; | |
601 | device->brightness = br; | |
4be44fcd LB |
602 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
603 | "found %d brightness levels\n", | |
604 | count)); | |
1da177e4 LT |
605 | } |
606 | } | |
607 | } | |
608 | ||
d1dd0c23 | 609 | kfree(obj); |
1da177e4 | 610 | |
2f3d000a YL |
611 | if (device->cap._BCL && device->cap._BCM && device->cap._BQC){ |
612 | unsigned long tmp; | |
613 | static int count = 0; | |
614 | char *name; | |
2f3d000a YL |
615 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
616 | if (!name) | |
617 | return; | |
618 | ||
2f3d000a | 619 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 620 | acpi_video_device_lcd_get_level_current(device, &tmp); |
2f3d000a | 621 | device->backlight = backlight_device_register(name, |
599a52d1 RP |
622 | NULL, device, &acpi_backlight_ops); |
623 | device->backlight->props.max_brightness = max_level; | |
624 | device->backlight->props.brightness = (int)tmp; | |
625 | backlight_update_status(device->backlight); | |
626 | ||
2f3d000a YL |
627 | kfree(name); |
628 | } | |
d550d98d | 629 | return; |
1da177e4 LT |
630 | } |
631 | ||
632 | /* | |
633 | * Arg: | |
634 | * device : video output device (VGA) | |
635 | * | |
636 | * Return Value: | |
637 | * None | |
638 | * | |
98fb8fe1 | 639 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
640 | */ |
641 | ||
4be44fcd | 642 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 643 | { |
4be44fcd | 644 | acpi_handle h_dummy1; |
1da177e4 | 645 | |
4be44fcd | 646 | memset(&video->cap, 0, 4); |
90130268 | 647 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
648 | video->cap._DOS = 1; |
649 | } | |
90130268 | 650 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
651 | video->cap._DOD = 1; |
652 | } | |
90130268 | 653 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
654 | video->cap._ROM = 1; |
655 | } | |
90130268 | 656 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
657 | video->cap._GPD = 1; |
658 | } | |
90130268 | 659 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
660 | video->cap._SPD = 1; |
661 | } | |
90130268 | 662 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
663 | video->cap._VPO = 1; |
664 | } | |
665 | } | |
666 | ||
667 | /* | |
668 | * Check whether the video bus device has required AML method to | |
669 | * support the desired features | |
670 | */ | |
671 | ||
4be44fcd | 672 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 673 | { |
4be44fcd | 674 | acpi_status status = -ENOENT; |
1da177e4 | 675 | |
1da177e4 LT |
676 | |
677 | if (!video) | |
d550d98d | 678 | return -EINVAL; |
1da177e4 LT |
679 | |
680 | /* Since there is no HID, CID and so on for VGA driver, we have | |
681 | * to check well known required nodes. | |
682 | */ | |
683 | ||
98fb8fe1 | 684 | /* Does this device support video switching? */ |
4be44fcd | 685 | if (video->cap._DOS) { |
1da177e4 LT |
686 | video->flags.multihead = 1; |
687 | status = 0; | |
688 | } | |
689 | ||
98fb8fe1 | 690 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 691 | if (video->cap._ROM) { |
1da177e4 LT |
692 | video->flags.rom = 1; |
693 | status = 0; | |
694 | } | |
695 | ||
98fb8fe1 | 696 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 697 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
698 | video->flags.post = 1; |
699 | status = 0; | |
700 | } | |
701 | ||
d550d98d | 702 | return status; |
1da177e4 LT |
703 | } |
704 | ||
705 | /* -------------------------------------------------------------------------- | |
706 | FS Interface (/proc) | |
707 | -------------------------------------------------------------------------- */ | |
708 | ||
4be44fcd | 709 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
710 | |
711 | /* video devices */ | |
712 | ||
4be44fcd | 713 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 714 | { |
50dd0969 | 715 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 716 | |
1da177e4 LT |
717 | |
718 | if (!dev) | |
719 | goto end; | |
720 | ||
721 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
722 | seq_printf(seq, "type: "); | |
723 | if (dev->flags.crt) | |
724 | seq_printf(seq, "CRT\n"); | |
725 | else if (dev->flags.lcd) | |
726 | seq_printf(seq, "LCD\n"); | |
727 | else if (dev->flags.tvout) | |
728 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
729 | else if (dev->flags.dvi) |
730 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
731 | else |
732 | seq_printf(seq, "UNKNOWN\n"); | |
733 | ||
4be44fcd | 734 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 735 | |
4be44fcd | 736 | end: |
d550d98d | 737 | return 0; |
1da177e4 LT |
738 | } |
739 | ||
740 | static int | |
4be44fcd | 741 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
742 | { |
743 | return single_open(file, acpi_video_device_info_seq_show, | |
744 | PDE(inode)->data); | |
745 | } | |
746 | ||
4be44fcd | 747 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 748 | { |
4be44fcd | 749 | int status; |
50dd0969 | 750 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 751 | unsigned long state; |
1da177e4 | 752 | |
1da177e4 LT |
753 | |
754 | if (!dev) | |
755 | goto end; | |
756 | ||
757 | status = acpi_video_device_get_state(dev, &state); | |
758 | seq_printf(seq, "state: "); | |
759 | if (ACPI_SUCCESS(status)) | |
760 | seq_printf(seq, "0x%02lx\n", state); | |
761 | else | |
762 | seq_printf(seq, "<not supported>\n"); | |
763 | ||
764 | status = acpi_video_device_query(dev, &state); | |
765 | seq_printf(seq, "query: "); | |
766 | if (ACPI_SUCCESS(status)) | |
767 | seq_printf(seq, "0x%02lx\n", state); | |
768 | else | |
769 | seq_printf(seq, "<not supported>\n"); | |
770 | ||
4be44fcd | 771 | end: |
d550d98d | 772 | return 0; |
1da177e4 LT |
773 | } |
774 | ||
775 | static int | |
4be44fcd | 776 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
777 | { |
778 | return single_open(file, acpi_video_device_state_seq_show, | |
779 | PDE(inode)->data); | |
780 | } | |
781 | ||
782 | static ssize_t | |
4be44fcd LB |
783 | acpi_video_device_write_state(struct file *file, |
784 | const char __user * buffer, | |
785 | size_t count, loff_t * data) | |
1da177e4 | 786 | { |
4be44fcd | 787 | int status; |
50dd0969 JE |
788 | struct seq_file *m = file->private_data; |
789 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
790 | char str[12] = { 0 }; |
791 | u32 state = 0; | |
1da177e4 | 792 | |
1da177e4 LT |
793 | |
794 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 795 | return -EINVAL; |
1da177e4 LT |
796 | |
797 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 798 | return -EFAULT; |
1da177e4 LT |
799 | |
800 | str[count] = 0; | |
801 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 802 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
803 | |
804 | status = acpi_video_device_set_state(dev, state); | |
805 | ||
806 | if (status) | |
d550d98d | 807 | return -EFAULT; |
1da177e4 | 808 | |
d550d98d | 809 | return count; |
1da177e4 LT |
810 | } |
811 | ||
812 | static int | |
4be44fcd | 813 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 814 | { |
50dd0969 | 815 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 816 | int i; |
1da177e4 | 817 | |
1da177e4 LT |
818 | |
819 | if (!dev || !dev->brightness) { | |
820 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 821 | return 0; |
1da177e4 LT |
822 | } |
823 | ||
824 | seq_printf(seq, "levels: "); | |
825 | for (i = 0; i < dev->brightness->count; i++) | |
826 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
827 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
828 | ||
d550d98d | 829 | return 0; |
1da177e4 LT |
830 | } |
831 | ||
832 | static int | |
4be44fcd | 833 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
834 | { |
835 | return single_open(file, acpi_video_device_brightness_seq_show, | |
836 | PDE(inode)->data); | |
837 | } | |
838 | ||
839 | static ssize_t | |
4be44fcd LB |
840 | acpi_video_device_write_brightness(struct file *file, |
841 | const char __user * buffer, | |
842 | size_t count, loff_t * data) | |
1da177e4 | 843 | { |
50dd0969 JE |
844 | struct seq_file *m = file->private_data; |
845 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
846 | char str[4] = { 0 }; |
847 | unsigned int level = 0; | |
848 | int i; | |
1da177e4 | 849 | |
1da177e4 | 850 | |
59d399d3 | 851 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 852 | return -EINVAL; |
1da177e4 LT |
853 | |
854 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 855 | return -EFAULT; |
1da177e4 LT |
856 | |
857 | str[count] = 0; | |
858 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 859 | |
1da177e4 | 860 | if (level > 100) |
d550d98d | 861 | return -EFAULT; |
1da177e4 | 862 | |
98fb8fe1 | 863 | /* validate through the list of available levels */ |
1da177e4 LT |
864 | for (i = 0; i < dev->brightness->count; i++) |
865 | if (level == dev->brightness->levels[i]) { | |
4be44fcd LB |
866 | if (ACPI_SUCCESS |
867 | (acpi_video_device_lcd_set_level(dev, level))) | |
1da177e4 LT |
868 | dev->brightness->curr = level; |
869 | break; | |
870 | } | |
871 | ||
d550d98d | 872 | return count; |
1da177e4 LT |
873 | } |
874 | ||
4be44fcd | 875 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 876 | { |
50dd0969 | 877 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
878 | int status; |
879 | int i; | |
880 | union acpi_object *edid = NULL; | |
1da177e4 | 881 | |
1da177e4 LT |
882 | |
883 | if (!dev) | |
884 | goto out; | |
885 | ||
4be44fcd | 886 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 887 | if (ACPI_FAILURE(status)) { |
4be44fcd | 888 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
889 | } |
890 | ||
891 | if (ACPI_FAILURE(status)) { | |
892 | goto out; | |
893 | } | |
894 | ||
895 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
896 | for (i = 0; i < edid->buffer.length; i++) | |
897 | seq_putc(seq, edid->buffer.pointer[i]); | |
898 | } | |
899 | ||
4be44fcd | 900 | out: |
1da177e4 LT |
901 | if (!edid) |
902 | seq_printf(seq, "<not supported>\n"); | |
903 | else | |
904 | kfree(edid); | |
905 | ||
d550d98d | 906 | return 0; |
1da177e4 LT |
907 | } |
908 | ||
909 | static int | |
4be44fcd | 910 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
911 | { |
912 | return single_open(file, acpi_video_device_EDID_seq_show, | |
913 | PDE(inode)->data); | |
914 | } | |
915 | ||
4be44fcd | 916 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 917 | { |
4be44fcd | 918 | struct proc_dir_entry *entry = NULL; |
1da177e4 LT |
919 | struct acpi_video_device *vid_dev; |
920 | ||
1da177e4 LT |
921 | |
922 | if (!device) | |
d550d98d | 923 | return -ENODEV; |
1da177e4 | 924 | |
50dd0969 | 925 | vid_dev = acpi_driver_data(device); |
1da177e4 | 926 | if (!vid_dev) |
d550d98d | 927 | return -ENODEV; |
1da177e4 LT |
928 | |
929 | if (!acpi_device_dir(device)) { | |
930 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 931 | vid_dev->video->dir); |
1da177e4 | 932 | if (!acpi_device_dir(device)) |
d550d98d | 933 | return -ENODEV; |
1da177e4 LT |
934 | acpi_device_dir(device)->owner = THIS_MODULE; |
935 | } | |
936 | ||
937 | /* 'info' [R] */ | |
938 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
939 | if (!entry) | |
d550d98d | 940 | return -ENODEV; |
1da177e4 LT |
941 | else { |
942 | entry->proc_fops = &acpi_video_device_info_fops; | |
943 | entry->data = acpi_driver_data(device); | |
944 | entry->owner = THIS_MODULE; | |
945 | } | |
946 | ||
947 | /* 'state' [R/W] */ | |
4be44fcd LB |
948 | entry = |
949 | create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR, | |
950 | acpi_device_dir(device)); | |
1da177e4 | 951 | if (!entry) |
d550d98d | 952 | return -ENODEV; |
1da177e4 | 953 | else { |
d479e908 | 954 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1da177e4 | 955 | entry->proc_fops = &acpi_video_device_state_fops; |
1da177e4 LT |
956 | entry->data = acpi_driver_data(device); |
957 | entry->owner = THIS_MODULE; | |
958 | } | |
959 | ||
960 | /* 'brightness' [R/W] */ | |
4be44fcd LB |
961 | entry = |
962 | create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
963 | acpi_device_dir(device)); | |
1da177e4 | 964 | if (!entry) |
d550d98d | 965 | return -ENODEV; |
1da177e4 | 966 | else { |
d479e908 | 967 | acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness; |
1da177e4 | 968 | entry->proc_fops = &acpi_video_device_brightness_fops; |
1da177e4 LT |
969 | entry->data = acpi_driver_data(device); |
970 | entry->owner = THIS_MODULE; | |
971 | } | |
972 | ||
973 | /* 'EDID' [R] */ | |
974 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); | |
975 | if (!entry) | |
d550d98d | 976 | return -ENODEV; |
1da177e4 LT |
977 | else { |
978 | entry->proc_fops = &acpi_video_device_EDID_fops; | |
979 | entry->data = acpi_driver_data(device); | |
980 | entry->owner = THIS_MODULE; | |
981 | } | |
982 | ||
d550d98d | 983 | return 0; |
1da177e4 LT |
984 | } |
985 | ||
4be44fcd | 986 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
987 | { |
988 | struct acpi_video_device *vid_dev; | |
1da177e4 | 989 | |
50dd0969 | 990 | vid_dev = acpi_driver_data(device); |
1da177e4 | 991 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 992 | return -ENODEV; |
1da177e4 LT |
993 | |
994 | if (acpi_device_dir(device)) { | |
995 | remove_proc_entry("info", acpi_device_dir(device)); | |
996 | remove_proc_entry("state", acpi_device_dir(device)); | |
997 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
998 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
4be44fcd | 999 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1000 | acpi_device_dir(device) = NULL; |
1001 | } | |
1002 | ||
d550d98d | 1003 | return 0; |
1da177e4 LT |
1004 | } |
1005 | ||
1da177e4 | 1006 | /* video bus */ |
4be44fcd | 1007 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1008 | { |
50dd0969 | 1009 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1010 | |
1da177e4 LT |
1011 | |
1012 | if (!video) | |
1013 | goto end; | |
1014 | ||
1015 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1016 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1017 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1018 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1019 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1020 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1021 | |
4be44fcd | 1022 | end: |
d550d98d | 1023 | return 0; |
1da177e4 LT |
1024 | } |
1025 | ||
4be44fcd | 1026 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1027 | { |
4be44fcd LB |
1028 | return single_open(file, acpi_video_bus_info_seq_show, |
1029 | PDE(inode)->data); | |
1da177e4 LT |
1030 | } |
1031 | ||
4be44fcd | 1032 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1033 | { |
50dd0969 | 1034 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1035 | |
1da177e4 LT |
1036 | |
1037 | if (!video) | |
1038 | goto end; | |
1039 | ||
1040 | printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__); | |
1041 | seq_printf(seq, "<TODO>\n"); | |
1042 | ||
4be44fcd | 1043 | end: |
d550d98d | 1044 | return 0; |
1da177e4 LT |
1045 | } |
1046 | ||
4be44fcd | 1047 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1048 | { |
1049 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1050 | } | |
1051 | ||
4be44fcd | 1052 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1053 | { |
50dd0969 | 1054 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1055 | unsigned long options; |
1056 | int status; | |
1da177e4 | 1057 | |
1da177e4 LT |
1058 | |
1059 | if (!video) | |
1060 | goto end; | |
1061 | ||
1062 | status = acpi_video_bus_POST_options(video, &options); | |
1063 | if (ACPI_SUCCESS(status)) { | |
1064 | if (!(options & 1)) { | |
4be44fcd LB |
1065 | printk(KERN_WARNING PREFIX |
1066 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1067 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1068 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 LT |
1069 | } |
1070 | printk("%lx\n", options); | |
98fb8fe1 | 1071 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1072 | if (options & 2) |
1073 | seq_printf(seq, " <PCI video>"); | |
1074 | if (options & 4) | |
1075 | seq_printf(seq, " <AGP video>"); | |
1076 | seq_putc(seq, '\n'); | |
1077 | } else | |
1078 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1079 | end: |
d550d98d | 1080 | return 0; |
1da177e4 LT |
1081 | } |
1082 | ||
1083 | static int | |
4be44fcd | 1084 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1085 | { |
4be44fcd LB |
1086 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1087 | PDE(inode)->data); | |
1da177e4 LT |
1088 | } |
1089 | ||
4be44fcd | 1090 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1091 | { |
50dd0969 | 1092 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1093 | int status; |
1094 | unsigned long id; | |
1da177e4 | 1095 | |
1da177e4 LT |
1096 | |
1097 | if (!video) | |
1098 | goto end; | |
1099 | ||
4be44fcd | 1100 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1101 | if (!ACPI_SUCCESS(status)) { |
1102 | seq_printf(seq, "<not supported>\n"); | |
1103 | goto end; | |
1104 | } | |
98fb8fe1 | 1105 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1106 | |
4be44fcd | 1107 | end: |
d550d98d | 1108 | return 0; |
1da177e4 LT |
1109 | } |
1110 | ||
4be44fcd | 1111 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1112 | { |
50dd0969 | 1113 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1114 | |
1da177e4 | 1115 | |
4be44fcd | 1116 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1117 | |
d550d98d | 1118 | return 0; |
1da177e4 LT |
1119 | } |
1120 | ||
4be44fcd | 1121 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1122 | { |
4be44fcd LB |
1123 | return single_open(file, acpi_video_bus_POST_seq_show, |
1124 | PDE(inode)->data); | |
1da177e4 LT |
1125 | } |
1126 | ||
4be44fcd | 1127 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1128 | { |
1129 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1130 | } | |
1131 | ||
1132 | static ssize_t | |
4be44fcd LB |
1133 | acpi_video_bus_write_POST(struct file *file, |
1134 | const char __user * buffer, | |
1135 | size_t count, loff_t * data) | |
1da177e4 | 1136 | { |
4be44fcd | 1137 | int status; |
50dd0969 JE |
1138 | struct seq_file *m = file->private_data; |
1139 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1140 | char str[12] = { 0 }; |
1141 | unsigned long opt, options; | |
1da177e4 | 1142 | |
1da177e4 | 1143 | |
1da177e4 | 1144 | if (!video || count + 1 > sizeof str) |
d550d98d | 1145 | return -EINVAL; |
1da177e4 LT |
1146 | |
1147 | status = acpi_video_bus_POST_options(video, &options); | |
1148 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1149 | return -EINVAL; |
1da177e4 LT |
1150 | |
1151 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1152 | return -EFAULT; |
1da177e4 LT |
1153 | |
1154 | str[count] = 0; | |
1155 | opt = strtoul(str, NULL, 0); | |
1156 | if (opt > 3) | |
d550d98d | 1157 | return -EFAULT; |
1da177e4 | 1158 | |
98fb8fe1 | 1159 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1160 | options |= 1; |
1161 | ||
1162 | if (options & (1ul << opt)) { | |
4be44fcd | 1163 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1164 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1165 | return -EFAULT; |
1da177e4 LT |
1166 | |
1167 | } | |
1168 | ||
d550d98d | 1169 | return count; |
1da177e4 LT |
1170 | } |
1171 | ||
1172 | static ssize_t | |
4be44fcd LB |
1173 | acpi_video_bus_write_DOS(struct file *file, |
1174 | const char __user * buffer, | |
1175 | size_t count, loff_t * data) | |
1da177e4 | 1176 | { |
4be44fcd | 1177 | int status; |
50dd0969 JE |
1178 | struct seq_file *m = file->private_data; |
1179 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1180 | char str[12] = { 0 }; |
1181 | unsigned long opt; | |
1da177e4 | 1182 | |
1da177e4 | 1183 | |
1da177e4 | 1184 | if (!video || count + 1 > sizeof str) |
d550d98d | 1185 | return -EINVAL; |
1da177e4 LT |
1186 | |
1187 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1188 | return -EFAULT; |
1da177e4 LT |
1189 | |
1190 | str[count] = 0; | |
1191 | opt = strtoul(str, NULL, 0); | |
1192 | if (opt > 7) | |
d550d98d | 1193 | return -EFAULT; |
1da177e4 | 1194 | |
4be44fcd | 1195 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1196 | |
1197 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1198 | return -EFAULT; |
1da177e4 | 1199 | |
d550d98d | 1200 | return count; |
1da177e4 LT |
1201 | } |
1202 | ||
4be44fcd | 1203 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1204 | { |
4be44fcd LB |
1205 | struct proc_dir_entry *entry = NULL; |
1206 | struct acpi_video_bus *video; | |
1da177e4 | 1207 | |
1da177e4 | 1208 | |
50dd0969 | 1209 | video = acpi_driver_data(device); |
1da177e4 LT |
1210 | |
1211 | if (!acpi_device_dir(device)) { | |
1212 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1213 | acpi_video_dir); |
1da177e4 | 1214 | if (!acpi_device_dir(device)) |
d550d98d | 1215 | return -ENODEV; |
1da177e4 LT |
1216 | video->dir = acpi_device_dir(device); |
1217 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1218 | } | |
1219 | ||
1220 | /* 'info' [R] */ | |
1221 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1222 | if (!entry) | |
d550d98d | 1223 | return -ENODEV; |
1da177e4 LT |
1224 | else { |
1225 | entry->proc_fops = &acpi_video_bus_info_fops; | |
1226 | entry->data = acpi_driver_data(device); | |
1227 | entry->owner = THIS_MODULE; | |
1228 | } | |
1229 | ||
1230 | /* 'ROM' [R] */ | |
1231 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); | |
1232 | if (!entry) | |
d550d98d | 1233 | return -ENODEV; |
1da177e4 LT |
1234 | else { |
1235 | entry->proc_fops = &acpi_video_bus_ROM_fops; | |
1236 | entry->data = acpi_driver_data(device); | |
1237 | entry->owner = THIS_MODULE; | |
1238 | } | |
1239 | ||
1240 | /* 'POST_info' [R] */ | |
4be44fcd LB |
1241 | entry = |
1242 | create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); | |
1da177e4 | 1243 | if (!entry) |
d550d98d | 1244 | return -ENODEV; |
1da177e4 LT |
1245 | else { |
1246 | entry->proc_fops = &acpi_video_bus_POST_info_fops; | |
1247 | entry->data = acpi_driver_data(device); | |
1248 | entry->owner = THIS_MODULE; | |
1249 | } | |
1250 | ||
1251 | /* 'POST' [R/W] */ | |
4be44fcd LB |
1252 | entry = |
1253 | create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR, | |
1254 | acpi_device_dir(device)); | |
1da177e4 | 1255 | if (!entry) |
d550d98d | 1256 | return -ENODEV; |
1da177e4 | 1257 | else { |
d479e908 | 1258 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
1da177e4 | 1259 | entry->proc_fops = &acpi_video_bus_POST_fops; |
1da177e4 LT |
1260 | entry->data = acpi_driver_data(device); |
1261 | entry->owner = THIS_MODULE; | |
1262 | } | |
1263 | ||
1264 | /* 'DOS' [R/W] */ | |
4be44fcd LB |
1265 | entry = |
1266 | create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR, | |
1267 | acpi_device_dir(device)); | |
1da177e4 | 1268 | if (!entry) |
d550d98d | 1269 | return -ENODEV; |
1da177e4 | 1270 | else { |
d479e908 | 1271 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
1da177e4 | 1272 | entry->proc_fops = &acpi_video_bus_DOS_fops; |
1da177e4 LT |
1273 | entry->data = acpi_driver_data(device); |
1274 | entry->owner = THIS_MODULE; | |
1275 | } | |
1276 | ||
d550d98d | 1277 | return 0; |
1da177e4 LT |
1278 | } |
1279 | ||
4be44fcd | 1280 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1281 | { |
4be44fcd | 1282 | struct acpi_video_bus *video; |
1da177e4 | 1283 | |
1da177e4 | 1284 | |
50dd0969 | 1285 | video = acpi_driver_data(device); |
1da177e4 LT |
1286 | |
1287 | if (acpi_device_dir(device)) { | |
1288 | remove_proc_entry("info", acpi_device_dir(device)); | |
1289 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1290 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1291 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1292 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
4be44fcd | 1293 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1294 | acpi_device_dir(device) = NULL; |
1295 | } | |
1296 | ||
d550d98d | 1297 | return 0; |
1da177e4 LT |
1298 | } |
1299 | ||
1300 | /* -------------------------------------------------------------------------- | |
1301 | Driver Interface | |
1302 | -------------------------------------------------------------------------- */ | |
1303 | ||
1304 | /* device interface */ | |
82cae999 RZ |
1305 | static struct acpi_video_device_attrib* |
1306 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1307 | { | |
1308 | int count; | |
1309 | ||
1310 | for(count = 0; count < video->attached_count; count++) | |
1311 | if((video->attached_array[count].value.int_val & 0xffff) == device_id) | |
1312 | return &(video->attached_array[count].value.attrib); | |
1313 | return NULL; | |
1314 | } | |
1da177e4 LT |
1315 | |
1316 | static int | |
4be44fcd LB |
1317 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1318 | struct acpi_video_bus *video) | |
1da177e4 | 1319 | { |
4be44fcd | 1320 | unsigned long device_id; |
973bf491 | 1321 | int status; |
4be44fcd | 1322 | struct acpi_video_device *data; |
82cae999 | 1323 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1324 | |
1325 | if (!device || !video) | |
d550d98d | 1326 | return -EINVAL; |
1da177e4 | 1327 | |
4be44fcd LB |
1328 | status = |
1329 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1330 | if (ACPI_SUCCESS(status)) { |
1331 | ||
36bcbec7 | 1332 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1333 | if (!data) |
d550d98d | 1334 | return -ENOMEM; |
1da177e4 | 1335 | |
1da177e4 LT |
1336 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1337 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1338 | acpi_driver_data(device) = data; | |
1339 | ||
1340 | data->device_id = device_id; | |
1341 | data->video = video; | |
1342 | data->dev = device; | |
1343 | ||
82cae999 RZ |
1344 | attribute = acpi_video_get_device_attr(video, device_id); |
1345 | ||
1346 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1347 | switch (attribute->display_type) { | |
1348 | case ACPI_VIDEO_DISPLAY_CRT: | |
1349 | data->flags.crt = 1; | |
1350 | break; | |
1351 | case ACPI_VIDEO_DISPLAY_TV: | |
1352 | data->flags.tvout = 1; | |
1353 | break; | |
1354 | case ACPI_VIDEO_DISPLAY_DVI: | |
1355 | data->flags.dvi = 1; | |
1356 | break; | |
1357 | case ACPI_VIDEO_DISPLAY_LCD: | |
1358 | data->flags.lcd = 1; | |
1359 | break; | |
1360 | default: | |
1361 | data->flags.unknown = 1; | |
1362 | break; | |
1363 | } | |
1364 | if(attribute->bios_can_detect) | |
1365 | data->flags.bios = 1; | |
1366 | } else | |
1da177e4 | 1367 | data->flags.unknown = 1; |
4be44fcd | 1368 | |
1da177e4 LT |
1369 | acpi_video_device_bind(video, data); |
1370 | acpi_video_device_find_cap(data); | |
1371 | ||
90130268 | 1372 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1373 | ACPI_DEVICE_NOTIFY, |
1374 | acpi_video_device_notify, | |
1375 | data); | |
1da177e4 LT |
1376 | if (ACPI_FAILURE(status)) { |
1377 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1378 | "Error installing notify handler\n")); |
973bf491 YL |
1379 | if(data->brightness) |
1380 | kfree(data->brightness->levels); | |
1381 | kfree(data->brightness); | |
1382 | kfree(data); | |
1383 | return -ENODEV; | |
1da177e4 LT |
1384 | } |
1385 | ||
1386 | down(&video->sem); | |
1387 | list_add_tail(&data->entry, &video->video_device_list); | |
1388 | up(&video->sem); | |
1389 | ||
1390 | acpi_video_device_add_fs(device); | |
1391 | ||
d550d98d | 1392 | return 0; |
1da177e4 LT |
1393 | } |
1394 | ||
d550d98d | 1395 | return -ENOENT; |
1da177e4 LT |
1396 | } |
1397 | ||
1398 | /* | |
1399 | * Arg: | |
1400 | * video : video bus device | |
1401 | * | |
1402 | * Return: | |
1403 | * none | |
1404 | * | |
1405 | * Enumerate the video device list of the video bus, | |
1406 | * bind the ids with the corresponding video devices | |
1407 | * under the video bus. | |
4be44fcd | 1408 | */ |
1da177e4 | 1409 | |
4be44fcd | 1410 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1411 | { |
4be44fcd | 1412 | struct list_head *node, *next; |
1da177e4 | 1413 | list_for_each_safe(node, next, &video->video_device_list) { |
4be44fcd LB |
1414 | struct acpi_video_device *dev = |
1415 | container_of(node, struct acpi_video_device, entry); | |
1416 | acpi_video_device_bind(video, dev); | |
1da177e4 LT |
1417 | } |
1418 | } | |
1419 | ||
1420 | /* | |
1421 | * Arg: | |
1422 | * video : video bus device | |
1423 | * device : video output device under the video | |
1424 | * bus | |
1425 | * | |
1426 | * Return: | |
1427 | * none | |
1428 | * | |
1429 | * Bind the ids with the corresponding video devices | |
1430 | * under the video bus. | |
4be44fcd | 1431 | */ |
1da177e4 LT |
1432 | |
1433 | static void | |
4be44fcd LB |
1434 | acpi_video_device_bind(struct acpi_video_bus *video, |
1435 | struct acpi_video_device *device) | |
1da177e4 | 1436 | { |
4be44fcd | 1437 | int i; |
1da177e4 LT |
1438 | |
1439 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1440 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
4be44fcd LB |
1441 | |
1442 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1443 | i < video->attached_count; i++) { | |
1444 | if (device->device_id == (IDS_VAL(i) & 0xffff)) { | |
1da177e4 LT |
1445 | IDS_BIND(i) = device; |
1446 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1447 | } | |
1448 | } | |
1449 | #undef IDS_VAL | |
1450 | #undef IDS_BIND | |
1451 | } | |
1452 | ||
1453 | /* | |
1454 | * Arg: | |
1455 | * video : video bus device | |
1456 | * | |
1457 | * Return: | |
1458 | * < 0 : error | |
1459 | * | |
1460 | * Call _DOD to enumerate all devices attached to display adapter | |
1461 | * | |
4be44fcd | 1462 | */ |
1da177e4 LT |
1463 | |
1464 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1465 | { | |
4be44fcd LB |
1466 | int status; |
1467 | int count; | |
1468 | int i; | |
1da177e4 | 1469 | struct acpi_video_enumerated_device *active_device_list; |
4be44fcd LB |
1470 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1471 | union acpi_object *dod = NULL; | |
1472 | union acpi_object *obj; | |
1da177e4 | 1473 | |
90130268 | 1474 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1475 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1476 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1477 | return status; |
1da177e4 LT |
1478 | } |
1479 | ||
50dd0969 | 1480 | dod = buffer.pointer; |
1da177e4 | 1481 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1482 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1483 | status = -EFAULT; |
1484 | goto out; | |
1485 | } | |
1486 | ||
1487 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1488 | dod->package.count)); |
1da177e4 | 1489 | |
4be44fcd LB |
1490 | active_device_list = kmalloc((1 + |
1491 | dod->package.count) * | |
1492 | sizeof(struct | |
1493 | acpi_video_enumerated_device), | |
1494 | GFP_KERNEL); | |
1da177e4 LT |
1495 | |
1496 | if (!active_device_list) { | |
1497 | status = -ENOMEM; | |
1498 | goto out; | |
1499 | } | |
1500 | ||
1501 | count = 0; | |
1502 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1503 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1504 | |
1505 | if (obj->type != ACPI_TYPE_INTEGER) { | |
6468463a | 1506 | printk(KERN_ERR PREFIX "Invalid _DOD data\n"); |
4be44fcd LB |
1507 | active_device_list[i].value.int_val = |
1508 | ACPI_VIDEO_HEAD_INVALID; | |
1da177e4 LT |
1509 | } |
1510 | active_device_list[i].value.int_val = obj->integer.value; | |
1511 | active_device_list[i].bind_info = NULL; | |
4be44fcd LB |
1512 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1513 | (int)obj->integer.value)); | |
1da177e4 LT |
1514 | count++; |
1515 | } | |
1516 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1517 | ||
6044ec88 | 1518 | kfree(video->attached_array); |
4be44fcd | 1519 | |
1da177e4 LT |
1520 | video->attached_array = active_device_list; |
1521 | video->attached_count = count; | |
4be44fcd | 1522 | out: |
02438d87 | 1523 | kfree(buffer.pointer); |
d550d98d | 1524 | return status; |
1da177e4 LT |
1525 | } |
1526 | ||
1527 | /* | |
1528 | * Arg: | |
1529 | * video : video bus device | |
98fb8fe1 | 1530 | * event : notify event |
1da177e4 LT |
1531 | * |
1532 | * Return: | |
1533 | * < 0 : error | |
1534 | * | |
1535 | * 1. Find out the current active output device. | |
98fb8fe1 | 1536 | * 2. Identify the next output device to switch to. |
1da177e4 | 1537 | * 3. call _DSS to do actual switch. |
4be44fcd | 1538 | */ |
1da177e4 | 1539 | |
4be44fcd | 1540 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event) |
1da177e4 | 1541 | { |
4be44fcd LB |
1542 | struct list_head *node, *next; |
1543 | struct acpi_video_device *dev = NULL; | |
1544 | struct acpi_video_device *dev_next = NULL; | |
1545 | struct acpi_video_device *dev_prev = NULL; | |
1da177e4 LT |
1546 | unsigned long state; |
1547 | int status = 0; | |
1548 | ||
1da177e4 LT |
1549 | |
1550 | list_for_each_safe(node, next, &video->video_device_list) { | |
7334571f | 1551 | dev = container_of(node, struct acpi_video_device, entry); |
1da177e4 | 1552 | status = acpi_video_device_get_state(dev, &state); |
4be44fcd LB |
1553 | if (state & 0x2) { |
1554 | dev_next = | |
1555 | container_of(node->next, struct acpi_video_device, | |
1556 | entry); | |
1557 | dev_prev = | |
1558 | container_of(node->prev, struct acpi_video_device, | |
1559 | entry); | |
1da177e4 LT |
1560 | goto out; |
1561 | } | |
1562 | } | |
1563 | dev_next = container_of(node->next, struct acpi_video_device, entry); | |
1564 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); | |
4be44fcd | 1565 | out: |
1da177e4 LT |
1566 | switch (event) { |
1567 | case ACPI_VIDEO_NOTIFY_CYCLE: | |
1568 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: | |
1569 | acpi_video_device_set_state(dev, 0); | |
1570 | acpi_video_device_set_state(dev_next, 0x80000001); | |
1571 | break; | |
1572 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: | |
1573 | acpi_video_device_set_state(dev, 0); | |
1574 | acpi_video_device_set_state(dev_prev, 0x80000001); | |
1575 | default: | |
1576 | break; | |
1577 | } | |
1578 | ||
d550d98d | 1579 | return status; |
1da177e4 LT |
1580 | } |
1581 | ||
4be44fcd LB |
1582 | static int |
1583 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1584 | u32 level_current, u32 event) | |
1da177e4 | 1585 | { |
f4715189 TT |
1586 | int min, max, min_above, max_below, i, l; |
1587 | max = max_below = 0; | |
1588 | min = min_above = 255; | |
1589 | for (i = 0; i < device->brightness->count; i++) { | |
1590 | l = device->brightness->levels[i]; | |
1591 | if (l < min) | |
1592 | min = l; | |
1593 | if (l > max) | |
1594 | max = l; | |
1595 | if (l < min_above && l > level_current) | |
1596 | min_above = l; | |
1597 | if (l > max_below && l < level_current) | |
1598 | max_below = l; | |
1599 | } | |
1600 | ||
1601 | switch (event) { | |
1602 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1603 | return (level_current < max) ? min_above : min; | |
1604 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1605 | return (level_current < max) ? min_above : max; | |
1606 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1607 | return (level_current > min) ? max_below : min; | |
1608 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1609 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1610 | return 0; | |
1611 | default: | |
1612 | return level_current; | |
1613 | } | |
1da177e4 LT |
1614 | } |
1615 | ||
1da177e4 | 1616 | static void |
4be44fcd | 1617 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 LT |
1618 | { |
1619 | unsigned long level_current, level_next; | |
1620 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1621 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1622 | acpi_video_device_lcd_set_level(device, level_next); | |
1623 | } | |
1624 | ||
1625 | static int | |
4be44fcd LB |
1626 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1627 | struct acpi_device *device) | |
1da177e4 | 1628 | { |
4be44fcd LB |
1629 | int status = 0; |
1630 | struct list_head *node, *next; | |
1da177e4 | 1631 | |
1da177e4 LT |
1632 | |
1633 | acpi_video_device_enumerate(video); | |
1634 | ||
1635 | list_for_each_safe(node, next, &device->children) { | |
4be44fcd LB |
1636 | struct acpi_device *dev = |
1637 | list_entry(node, struct acpi_device, node); | |
1da177e4 LT |
1638 | |
1639 | if (!dev) | |
1640 | continue; | |
1641 | ||
1642 | status = acpi_video_bus_get_one_device(dev, video); | |
1643 | if (ACPI_FAILURE(status)) { | |
a6fc6720 | 1644 | ACPI_EXCEPTION((AE_INFO, status, "Cant attach device")); |
1da177e4 LT |
1645 | continue; |
1646 | } | |
1647 | ||
1648 | } | |
d550d98d | 1649 | return status; |
1da177e4 LT |
1650 | } |
1651 | ||
4be44fcd | 1652 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1653 | { |
031ec77b | 1654 | acpi_status status; |
1da177e4 LT |
1655 | struct acpi_video_bus *video; |
1656 | ||
1da177e4 LT |
1657 | |
1658 | if (!device || !device->video) | |
d550d98d | 1659 | return -ENOENT; |
1da177e4 LT |
1660 | |
1661 | video = device->video; | |
1662 | ||
1663 | down(&video->sem); | |
1664 | list_del(&device->entry); | |
1665 | up(&video->sem); | |
1666 | acpi_video_device_remove_fs(device->dev); | |
1667 | ||
90130268 | 1668 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1669 | ACPI_DEVICE_NOTIFY, |
1670 | acpi_video_device_notify); | |
599a52d1 | 1671 | backlight_device_unregister(device->backlight); |
d550d98d | 1672 | return 0; |
1da177e4 LT |
1673 | } |
1674 | ||
4be44fcd | 1675 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1676 | { |
4be44fcd LB |
1677 | int status; |
1678 | struct list_head *node, *next; | |
1da177e4 | 1679 | |
1da177e4 LT |
1680 | |
1681 | list_for_each_safe(node, next, &video->video_device_list) { | |
4be44fcd LB |
1682 | struct acpi_video_device *data = |
1683 | list_entry(node, struct acpi_video_device, entry); | |
1da177e4 LT |
1684 | if (!data) |
1685 | continue; | |
1686 | ||
1687 | status = acpi_video_bus_put_one_device(data); | |
4be44fcd LB |
1688 | if (ACPI_FAILURE(status)) |
1689 | printk(KERN_WARNING PREFIX | |
1690 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1691 | |
d384ea69 | 1692 | if (data->brightness) |
973bf491 | 1693 | kfree(data->brightness->levels); |
6044ec88 | 1694 | kfree(data->brightness); |
1da177e4 LT |
1695 | kfree(data); |
1696 | } | |
1697 | ||
d550d98d | 1698 | return 0; |
1da177e4 LT |
1699 | } |
1700 | ||
1701 | /* acpi_video interface */ | |
1702 | ||
4be44fcd | 1703 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1704 | { |
1705 | return acpi_video_bus_DOS(video, 1, 0); | |
1706 | } | |
1707 | ||
4be44fcd | 1708 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1709 | { |
1710 | return acpi_video_bus_DOS(video, 0, 1); | |
1711 | } | |
1712 | ||
4be44fcd | 1713 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1714 | { |
50dd0969 | 1715 | struct acpi_video_bus *video = data; |
4be44fcd | 1716 | struct acpi_device *device = NULL; |
1da177e4 | 1717 | |
1da177e4 LT |
1718 | printk("video bus notify\n"); |
1719 | ||
1720 | if (!video) | |
d550d98d | 1721 | return; |
1da177e4 | 1722 | |
e6afa0de | 1723 | device = video->device; |
1da177e4 LT |
1724 | |
1725 | switch (event) { | |
98fb8fe1 | 1726 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 LT |
1727 | * most likely via hotkey. */ |
1728 | acpi_bus_generate_event(device, event, 0); | |
1729 | break; | |
1730 | ||
98fb8fe1 | 1731 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1732 | * connector. */ |
1733 | acpi_video_device_enumerate(video); | |
1734 | acpi_video_device_rebind(video); | |
1735 | acpi_video_switch_output(video, event); | |
1736 | acpi_bus_generate_event(device, event, 0); | |
1737 | break; | |
1738 | ||
4be44fcd LB |
1739 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
1740 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ | |
1741 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ | |
1da177e4 LT |
1742 | acpi_video_switch_output(video, event); |
1743 | acpi_bus_generate_event(device, event, 0); | |
1744 | break; | |
1745 | ||
1746 | default: | |
1747 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1748 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1749 | break; |
1750 | } | |
1751 | ||
d550d98d | 1752 | return; |
1da177e4 LT |
1753 | } |
1754 | ||
4be44fcd | 1755 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1756 | { |
50dd0969 | 1757 | struct acpi_video_device *video_device = data; |
4be44fcd | 1758 | struct acpi_device *device = NULL; |
1da177e4 | 1759 | |
1da177e4 | 1760 | if (!video_device) |
d550d98d | 1761 | return; |
1da177e4 | 1762 | |
e6afa0de | 1763 | device = video_device->dev; |
1da177e4 LT |
1764 | |
1765 | switch (event) { | |
4be44fcd LB |
1766 | case ACPI_VIDEO_NOTIFY_SWITCH: /* change in status (cycle output device) */ |
1767 | case ACPI_VIDEO_NOTIFY_PROBE: /* change in status (output device status) */ | |
1da177e4 LT |
1768 | acpi_bus_generate_event(device, event, 0); |
1769 | break; | |
4be44fcd LB |
1770 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
1771 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ | |
1772 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ | |
1773 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ | |
1774 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ | |
1775 | acpi_video_switch_brightness(video_device, event); | |
1da177e4 LT |
1776 | acpi_bus_generate_event(device, event, 0); |
1777 | break; | |
1778 | default: | |
1779 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1780 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1781 | break; |
1782 | } | |
d550d98d | 1783 | return; |
1da177e4 LT |
1784 | } |
1785 | ||
4be44fcd | 1786 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1787 | { |
4be44fcd LB |
1788 | int result = 0; |
1789 | acpi_status status = 0; | |
1790 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 1791 | |
4be44fcd | 1792 | |
1da177e4 | 1793 | if (!device) |
d550d98d | 1794 | return -EINVAL; |
1da177e4 | 1795 | |
36bcbec7 | 1796 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 1797 | if (!video) |
d550d98d | 1798 | return -ENOMEM; |
1da177e4 | 1799 | |
e6afa0de | 1800 | video->device = device; |
1da177e4 LT |
1801 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
1802 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1803 | acpi_driver_data(device) = video; | |
1804 | ||
1805 | acpi_video_bus_find_cap(video); | |
1806 | result = acpi_video_bus_check(video); | |
1807 | if (result) | |
1808 | goto end; | |
1809 | ||
1810 | result = acpi_video_bus_add_fs(device); | |
1811 | if (result) | |
1812 | goto end; | |
1813 | ||
1814 | init_MUTEX(&video->sem); | |
1815 | INIT_LIST_HEAD(&video->video_device_list); | |
1816 | ||
1817 | acpi_video_bus_get_devices(video, device); | |
1818 | acpi_video_bus_start_devices(video); | |
1819 | ||
90130268 | 1820 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1821 | ACPI_DEVICE_NOTIFY, |
1822 | acpi_video_bus_notify, video); | |
1da177e4 LT |
1823 | if (ACPI_FAILURE(status)) { |
1824 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1825 | "Error installing notify handler\n")); |
973bf491 YL |
1826 | acpi_video_bus_stop_devices(video); |
1827 | acpi_video_bus_put_devices(video); | |
1828 | kfree(video->attached_array); | |
1829 | acpi_video_bus_remove_fs(device); | |
1da177e4 LT |
1830 | result = -ENODEV; |
1831 | goto end; | |
1832 | } | |
1833 | ||
1834 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", | |
4be44fcd LB |
1835 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
1836 | video->flags.multihead ? "yes" : "no", | |
1837 | video->flags.rom ? "yes" : "no", | |
1838 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 1839 | |
4be44fcd | 1840 | end: |
973bf491 | 1841 | if (result) |
1da177e4 | 1842 | kfree(video); |
1da177e4 | 1843 | |
d550d98d | 1844 | return result; |
1da177e4 LT |
1845 | } |
1846 | ||
4be44fcd | 1847 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 1848 | { |
4be44fcd LB |
1849 | acpi_status status = 0; |
1850 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 1851 | |
1da177e4 LT |
1852 | |
1853 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 1854 | return -EINVAL; |
1da177e4 | 1855 | |
50dd0969 | 1856 | video = acpi_driver_data(device); |
1da177e4 LT |
1857 | |
1858 | acpi_video_bus_stop_devices(video); | |
1859 | ||
90130268 | 1860 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
1861 | ACPI_DEVICE_NOTIFY, |
1862 | acpi_video_bus_notify); | |
1da177e4 LT |
1863 | |
1864 | acpi_video_bus_put_devices(video); | |
1865 | acpi_video_bus_remove_fs(device); | |
1866 | ||
6044ec88 | 1867 | kfree(video->attached_array); |
1da177e4 LT |
1868 | kfree(video); |
1869 | ||
d550d98d | 1870 | return 0; |
1da177e4 LT |
1871 | } |
1872 | ||
4be44fcd | 1873 | static int __init acpi_video_init(void) |
1da177e4 | 1874 | { |
4be44fcd | 1875 | int result = 0; |
1da177e4 | 1876 | |
1da177e4 LT |
1877 | |
1878 | /* | |
4be44fcd LB |
1879 | acpi_dbg_level = 0xFFFFFFFF; |
1880 | acpi_dbg_layer = 0x08000000; | |
1881 | */ | |
1da177e4 LT |
1882 | |
1883 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1884 | if (!acpi_video_dir) | |
d550d98d | 1885 | return -ENODEV; |
1da177e4 LT |
1886 | acpi_video_dir->owner = THIS_MODULE; |
1887 | ||
1888 | result = acpi_bus_register_driver(&acpi_video_bus); | |
1889 | if (result < 0) { | |
1890 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 1891 | return -ENODEV; |
1da177e4 LT |
1892 | } |
1893 | ||
d550d98d | 1894 | return 0; |
1da177e4 LT |
1895 | } |
1896 | ||
4be44fcd | 1897 | static void __exit acpi_video_exit(void) |
1da177e4 | 1898 | { |
1da177e4 LT |
1899 | |
1900 | acpi_bus_unregister_driver(&acpi_video_bus); | |
1901 | ||
1902 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1903 | ||
d550d98d | 1904 | return; |
1da177e4 LT |
1905 | } |
1906 | ||
1907 | module_init(acpi_video_init); | |
1908 | module_exit(acpi_video_exit); |