Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * video.c - ACPI Video Driver ($Revision:$) | |
3 | * | |
4 | * Copyright (C) 2004 Luming Yu <luming.yu@intel.com> | |
5 | * Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org> | |
f4715189 | 6 | * Copyright (C) 2006 Thomas Tuttle <linux-kernel@ttuttle.net> |
1da177e4 LT |
7 | * |
8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or (at | |
13 | * your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
23 | * | |
24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
25 | */ | |
26 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/types.h> | |
31 | #include <linux/list.h> | |
32 | #include <linux/proc_fs.h> | |
33 | #include <linux/seq_file.h> | |
34 | ||
2f3d000a | 35 | #include <linux/backlight.h> |
23b0f015 | 36 | #include <linux/video_output.h> |
1da177e4 LT |
37 | #include <asm/uaccess.h> |
38 | ||
39 | #include <acpi/acpi_bus.h> | |
40 | #include <acpi/acpi_drivers.h> | |
41 | ||
42 | #define ACPI_VIDEO_COMPONENT 0x08000000 | |
43 | #define ACPI_VIDEO_CLASS "video" | |
1da177e4 LT |
44 | #define ACPI_VIDEO_BUS_NAME "Video Bus" |
45 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" | |
46 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 | |
47 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 | |
48 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 | |
49 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 | |
50 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 | |
51 | ||
f4715189 TT |
52 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85 |
53 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 | |
54 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 | |
55 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88 | |
56 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89 | |
1da177e4 | 57 | |
1da177e4 LT |
58 | #define ACPI_VIDEO_HEAD_INVALID (~0u - 1) |
59 | #define ACPI_VIDEO_HEAD_END (~0u) | |
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 | ||
4be44fcd LB |
74 | static int acpi_video_bus_add(struct acpi_device *device); |
75 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
1da177e4 | 76 | |
1ba90e3a TR |
77 | static const struct acpi_device_id video_device_ids[] = { |
78 | {ACPI_VIDEO_HID, 0}, | |
79 | {"", 0}, | |
80 | }; | |
81 | MODULE_DEVICE_TABLE(acpi, video_device_ids); | |
82 | ||
1da177e4 | 83 | static struct acpi_driver acpi_video_bus = { |
c2b6705b | 84 | .name = "video", |
1da177e4 | 85 | .class = ACPI_VIDEO_CLASS, |
1ba90e3a | 86 | .ids = video_device_ids, |
1da177e4 LT |
87 | .ops = { |
88 | .add = acpi_video_bus_add, | |
89 | .remove = acpi_video_bus_remove, | |
4be44fcd | 90 | }, |
1da177e4 LT |
91 | }; |
92 | ||
93 | struct acpi_video_bus_flags { | |
4be44fcd LB |
94 | u8 multihead:1; /* can switch video heads */ |
95 | u8 rom:1; /* can retrieve a video rom */ | |
96 | u8 post:1; /* can configure the head to */ | |
97 | u8 reserved:5; | |
1da177e4 LT |
98 | }; |
99 | ||
100 | struct acpi_video_bus_cap { | |
4be44fcd LB |
101 | u8 _DOS:1; /*Enable/Disable output switching */ |
102 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
103 | u8 _ROM:1; /*Get ROM Data */ | |
104 | u8 _GPD:1; /*Get POST Device */ | |
105 | u8 _SPD:1; /*Set POST Device */ | |
106 | u8 _VPO:1; /*Video POST Options */ | |
107 | u8 reserved:2; | |
1da177e4 LT |
108 | }; |
109 | ||
4be44fcd LB |
110 | struct acpi_video_device_attrib { |
111 | u32 display_index:4; /* A zero-based instance of the Display */ | |
98fb8fe1 | 112 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
4be44fcd | 113 | u32 display_type:4; /*Describe the specific type in use */ |
98fb8fe1 | 114 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
4be44fcd LB |
115 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
116 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
117 | the VGA device. */ | |
118 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
119 | u32 reserved:10; /*Must be 0 */ | |
120 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
121 | }; |
122 | ||
123 | struct acpi_video_enumerated_device { | |
124 | union { | |
125 | u32 int_val; | |
4be44fcd | 126 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
127 | } value; |
128 | struct acpi_video_device *bind_info; | |
129 | }; | |
130 | ||
131 | struct acpi_video_bus { | |
e6afa0de | 132 | struct acpi_device *device; |
4be44fcd | 133 | u8 dos_setting; |
1da177e4 | 134 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
135 | u8 attached_count; |
136 | struct acpi_video_bus_cap cap; | |
1da177e4 | 137 | struct acpi_video_bus_flags flags; |
4be44fcd LB |
138 | struct semaphore sem; |
139 | struct list_head video_device_list; | |
140 | struct proc_dir_entry *dir; | |
1da177e4 LT |
141 | }; |
142 | ||
143 | struct acpi_video_device_flags { | |
4be44fcd LB |
144 | u8 crt:1; |
145 | u8 lcd:1; | |
146 | u8 tvout:1; | |
82cae999 | 147 | u8 dvi:1; |
4be44fcd LB |
148 | u8 bios:1; |
149 | u8 unknown:1; | |
82cae999 | 150 | u8 reserved:2; |
1da177e4 LT |
151 | }; |
152 | ||
153 | struct acpi_video_device_cap { | |
4be44fcd LB |
154 | u8 _ADR:1; /*Return the unique ID */ |
155 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
156 | u8 _BCM:1; /*Set the brightness level */ | |
2f3d000a | 157 | u8 _BQC:1; /* Get current brightness level */ |
4be44fcd LB |
158 | u8 _DDC:1; /*Return the EDID for this device */ |
159 | u8 _DCS:1; /*Return status of output device */ | |
160 | u8 _DGS:1; /*Query graphics state */ | |
161 | u8 _DSS:1; /*Device state set */ | |
1da177e4 LT |
162 | }; |
163 | ||
164 | struct acpi_video_device_brightness { | |
4be44fcd LB |
165 | int curr; |
166 | int count; | |
167 | int *levels; | |
1da177e4 LT |
168 | }; |
169 | ||
170 | struct acpi_video_device { | |
4be44fcd LB |
171 | unsigned long device_id; |
172 | struct acpi_video_device_flags flags; | |
173 | struct acpi_video_device_cap cap; | |
174 | struct list_head entry; | |
175 | struct acpi_video_bus *video; | |
176 | struct acpi_device *dev; | |
1da177e4 | 177 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 178 | struct backlight_device *backlight; |
23b0f015 | 179 | struct output_device *output_dev; |
1da177e4 LT |
180 | }; |
181 | ||
1da177e4 LT |
182 | /* bus */ |
183 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
184 | static struct file_operations acpi_video_bus_info_fops = { | |
4be44fcd LB |
185 | .open = acpi_video_bus_info_open_fs, |
186 | .read = seq_read, | |
187 | .llseek = seq_lseek, | |
188 | .release = single_release, | |
1da177e4 LT |
189 | }; |
190 | ||
191 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
192 | static struct file_operations acpi_video_bus_ROM_fops = { | |
4be44fcd LB |
193 | .open = acpi_video_bus_ROM_open_fs, |
194 | .read = seq_read, | |
195 | .llseek = seq_lseek, | |
196 | .release = single_release, | |
1da177e4 LT |
197 | }; |
198 | ||
4be44fcd LB |
199 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
200 | struct file *file); | |
1da177e4 | 201 | static struct file_operations acpi_video_bus_POST_info_fops = { |
4be44fcd LB |
202 | .open = acpi_video_bus_POST_info_open_fs, |
203 | .read = seq_read, | |
204 | .llseek = seq_lseek, | |
205 | .release = single_release, | |
1da177e4 LT |
206 | }; |
207 | ||
208 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
209 | static struct file_operations acpi_video_bus_POST_fops = { | |
4be44fcd LB |
210 | .open = acpi_video_bus_POST_open_fs, |
211 | .read = seq_read, | |
212 | .llseek = seq_lseek, | |
213 | .release = single_release, | |
1da177e4 LT |
214 | }; |
215 | ||
1da177e4 LT |
216 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
217 | static struct file_operations acpi_video_bus_DOS_fops = { | |
4be44fcd LB |
218 | .open = acpi_video_bus_DOS_open_fs, |
219 | .read = seq_read, | |
220 | .llseek = seq_lseek, | |
221 | .release = single_release, | |
1da177e4 LT |
222 | }; |
223 | ||
224 | /* device */ | |
4be44fcd LB |
225 | static int acpi_video_device_info_open_fs(struct inode *inode, |
226 | struct file *file); | |
1da177e4 | 227 | static struct file_operations acpi_video_device_info_fops = { |
4be44fcd LB |
228 | .open = acpi_video_device_info_open_fs, |
229 | .read = seq_read, | |
230 | .llseek = seq_lseek, | |
231 | .release = single_release, | |
1da177e4 LT |
232 | }; |
233 | ||
4be44fcd LB |
234 | static int acpi_video_device_state_open_fs(struct inode *inode, |
235 | struct file *file); | |
1da177e4 | 236 | static struct file_operations acpi_video_device_state_fops = { |
4be44fcd LB |
237 | .open = acpi_video_device_state_open_fs, |
238 | .read = seq_read, | |
239 | .llseek = seq_lseek, | |
240 | .release = single_release, | |
1da177e4 LT |
241 | }; |
242 | ||
4be44fcd LB |
243 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
244 | struct file *file); | |
1da177e4 | 245 | static struct file_operations acpi_video_device_brightness_fops = { |
4be44fcd LB |
246 | .open = acpi_video_device_brightness_open_fs, |
247 | .read = seq_read, | |
248 | .llseek = seq_lseek, | |
249 | .release = single_release, | |
1da177e4 LT |
250 | }; |
251 | ||
4be44fcd LB |
252 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
253 | struct file *file); | |
1da177e4 | 254 | static struct file_operations acpi_video_device_EDID_fops = { |
4be44fcd LB |
255 | .open = acpi_video_device_EDID_open_fs, |
256 | .read = seq_read, | |
257 | .llseek = seq_lseek, | |
258 | .release = single_release, | |
1da177e4 LT |
259 | }; |
260 | ||
4be44fcd | 261 | static char device_decode[][30] = { |
1da177e4 LT |
262 | "motherboard VGA device", |
263 | "PCI VGA device", | |
264 | "AGP VGA device", | |
265 | "UNKNOWN", | |
266 | }; | |
267 | ||
4be44fcd LB |
268 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
269 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
270 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
271 | struct acpi_video_device *device); | |
1da177e4 | 272 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
4be44fcd | 273 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event); |
2f3d000a YL |
274 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
275 | int level); | |
276 | static int acpi_video_device_lcd_get_level_current( | |
277 | struct acpi_video_device *device, | |
278 | unsigned long *level); | |
4be44fcd LB |
279 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
280 | u32 level_current, u32 event); | |
281 | static void acpi_video_switch_brightness(struct acpi_video_device *device, | |
282 | int event); | |
23b0f015 LY |
283 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
284 | unsigned long *state); | |
285 | static int acpi_video_output_get(struct output_device *od); | |
286 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 287 | |
2f3d000a YL |
288 | /*backlight device sysfs support*/ |
289 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
290 | { | |
291 | unsigned long cur_level; | |
292 | struct acpi_video_device *vd = | |
655bfd7a | 293 | (struct acpi_video_device *)bl_get_data(bd); |
2f3d000a YL |
294 | acpi_video_device_lcd_get_level_current(vd, &cur_level); |
295 | return (int) cur_level; | |
296 | } | |
297 | ||
298 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
299 | { | |
599a52d1 | 300 | int request_level = bd->props.brightness; |
2f3d000a | 301 | struct acpi_video_device *vd = |
655bfd7a | 302 | (struct acpi_video_device *)bl_get_data(bd); |
2f3d000a YL |
303 | acpi_video_device_lcd_set_level(vd, request_level); |
304 | return 0; | |
305 | } | |
306 | ||
599a52d1 RP |
307 | static struct backlight_ops acpi_backlight_ops = { |
308 | .get_brightness = acpi_video_get_brightness, | |
309 | .update_status = acpi_video_set_brightness, | |
310 | }; | |
311 | ||
23b0f015 LY |
312 | /*video output device sysfs support*/ |
313 | static int acpi_video_output_get(struct output_device *od) | |
314 | { | |
315 | unsigned long state; | |
316 | struct acpi_video_device *vd = | |
317 | (struct acpi_video_device *)class_get_devdata(&od->class_dev); | |
318 | acpi_video_device_get_state(vd, &state); | |
319 | return (int)state; | |
320 | } | |
321 | ||
322 | static int acpi_video_output_set(struct output_device *od) | |
323 | { | |
324 | unsigned long state = od->request_state; | |
325 | struct acpi_video_device *vd= | |
326 | (struct acpi_video_device *)class_get_devdata(&od->class_dev); | |
327 | return acpi_video_device_set_state(vd, state); | |
328 | } | |
329 | ||
330 | static struct output_properties acpi_output_properties = { | |
331 | .set_state = acpi_video_output_set, | |
332 | .get_status = acpi_video_output_get, | |
333 | }; | |
1da177e4 LT |
334 | /* -------------------------------------------------------------------------- |
335 | Video Management | |
336 | -------------------------------------------------------------------------- */ | |
337 | ||
338 | /* device */ | |
339 | ||
340 | static int | |
4be44fcd | 341 | acpi_video_device_query(struct acpi_video_device *device, unsigned long *state) |
1da177e4 | 342 | { |
4be44fcd | 343 | int status; |
90130268 PM |
344 | |
345 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 346 | |
d550d98d | 347 | return status; |
1da177e4 LT |
348 | } |
349 | ||
350 | static int | |
4be44fcd LB |
351 | acpi_video_device_get_state(struct acpi_video_device *device, |
352 | unsigned long *state) | |
1da177e4 | 353 | { |
4be44fcd | 354 | int status; |
1da177e4 | 355 | |
90130268 | 356 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 357 | |
d550d98d | 358 | return status; |
1da177e4 LT |
359 | } |
360 | ||
361 | static int | |
4be44fcd | 362 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 363 | { |
4be44fcd LB |
364 | int status; |
365 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
366 | struct acpi_object_list args = { 1, &arg0 }; | |
824b558b | 367 | unsigned long ret; |
1da177e4 | 368 | |
1da177e4 LT |
369 | |
370 | arg0.integer.value = state; | |
90130268 | 371 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 372 | |
d550d98d | 373 | return status; |
1da177e4 LT |
374 | } |
375 | ||
376 | static int | |
4be44fcd LB |
377 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
378 | union acpi_object **levels) | |
1da177e4 | 379 | { |
4be44fcd LB |
380 | int status; |
381 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
382 | union acpi_object *obj; | |
1da177e4 | 383 | |
1da177e4 LT |
384 | |
385 | *levels = NULL; | |
386 | ||
90130268 | 387 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 388 | if (!ACPI_SUCCESS(status)) |
d550d98d | 389 | return status; |
4be44fcd | 390 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 391 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 392 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
393 | status = -EFAULT; |
394 | goto err; | |
395 | } | |
396 | ||
397 | *levels = obj; | |
398 | ||
d550d98d | 399 | return 0; |
1da177e4 | 400 | |
4be44fcd | 401 | err: |
6044ec88 | 402 | kfree(buffer.pointer); |
1da177e4 | 403 | |
d550d98d | 404 | return status; |
1da177e4 LT |
405 | } |
406 | ||
407 | static int | |
4be44fcd | 408 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 409 | { |
4be44fcd LB |
410 | int status; |
411 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
412 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 413 | |
1da177e4 LT |
414 | |
415 | arg0.integer.value = level; | |
90130268 | 416 | status = acpi_evaluate_object(device->dev->handle, "_BCM", &args, NULL); |
1da177e4 LT |
417 | |
418 | printk(KERN_DEBUG "set_level status: %x\n", status); | |
d550d98d | 419 | return status; |
1da177e4 LT |
420 | } |
421 | ||
422 | static int | |
4be44fcd LB |
423 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
424 | unsigned long *level) | |
1da177e4 | 425 | { |
4be44fcd | 426 | int status; |
1da177e4 | 427 | |
90130268 | 428 | status = acpi_evaluate_integer(device->dev->handle, "_BQC", NULL, level); |
1da177e4 | 429 | |
d550d98d | 430 | return status; |
1da177e4 LT |
431 | } |
432 | ||
433 | static int | |
4be44fcd LB |
434 | acpi_video_device_EDID(struct acpi_video_device *device, |
435 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 436 | { |
4be44fcd LB |
437 | int status; |
438 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
439 | union acpi_object *obj; | |
440 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
441 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 442 | |
1da177e4 LT |
443 | |
444 | *edid = NULL; | |
445 | ||
446 | if (!device) | |
d550d98d | 447 | return -ENODEV; |
1da177e4 LT |
448 | if (length == 128) |
449 | arg0.integer.value = 1; | |
450 | else if (length == 256) | |
451 | arg0.integer.value = 2; | |
452 | else | |
d550d98d | 453 | return -EINVAL; |
1da177e4 | 454 | |
90130268 | 455 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 456 | if (ACPI_FAILURE(status)) |
d550d98d | 457 | return -ENODEV; |
1da177e4 | 458 | |
50dd0969 | 459 | obj = buffer.pointer; |
1da177e4 LT |
460 | |
461 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
462 | *edid = obj; | |
463 | else { | |
6468463a | 464 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
465 | status = -EFAULT; |
466 | kfree(obj); | |
467 | } | |
468 | ||
d550d98d | 469 | return status; |
1da177e4 LT |
470 | } |
471 | ||
1da177e4 LT |
472 | /* bus */ |
473 | ||
474 | static int | |
4be44fcd | 475 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 476 | { |
4be44fcd LB |
477 | int status; |
478 | unsigned long tmp; | |
479 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
480 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 481 | |
1da177e4 LT |
482 | |
483 | arg0.integer.value = option; | |
484 | ||
90130268 | 485 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 486 | if (ACPI_SUCCESS(status)) |
4be44fcd | 487 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 488 | |
d550d98d | 489 | return status; |
1da177e4 LT |
490 | } |
491 | ||
492 | static int | |
4be44fcd | 493 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) |
1da177e4 LT |
494 | { |
495 | int status; | |
496 | ||
90130268 | 497 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 498 | |
d550d98d | 499 | return status; |
1da177e4 LT |
500 | } |
501 | ||
502 | static int | |
4be44fcd LB |
503 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
504 | unsigned long *options) | |
1da177e4 | 505 | { |
4be44fcd | 506 | int status; |
1da177e4 | 507 | |
90130268 | 508 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
509 | *options &= 3; |
510 | ||
d550d98d | 511 | return status; |
1da177e4 LT |
512 | } |
513 | ||
514 | /* | |
515 | * Arg: | |
516 | * video : video bus device pointer | |
517 | * bios_flag : | |
518 | * 0. The system BIOS should NOT automatically switch(toggle) | |
519 | * the active display output. | |
520 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 521 | * active display output. No switch event. |
1da177e4 LT |
522 | * 2. The _DGS value should be locked. |
523 | * 3. The system BIOS should not automatically switch (toggle) the | |
524 | * active display output, but instead generate the display switch | |
525 | * event notify code. | |
526 | * lcd_flag : | |
527 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 528 | * of the LCD when the power changes from AC to DC |
1da177e4 | 529 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 530 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
531 | * Return Value: |
532 | * -1 wrong arg. | |
533 | */ | |
534 | ||
535 | static int | |
4be44fcd | 536 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 537 | { |
4be44fcd LB |
538 | acpi_integer status = 0; |
539 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
540 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 541 | |
1da177e4 | 542 | |
4be44fcd | 543 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
544 | status = -1; |
545 | goto Failed; | |
546 | } | |
547 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
548 | video->dos_setting = arg0.integer.value; | |
90130268 | 549 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 550 | |
4be44fcd | 551 | Failed: |
d550d98d | 552 | return status; |
1da177e4 LT |
553 | } |
554 | ||
555 | /* | |
556 | * Arg: | |
557 | * device : video output device (LCD, CRT, ..) | |
558 | * | |
559 | * Return Value: | |
560 | * None | |
561 | * | |
98fb8fe1 | 562 | * Find out all required AML methods defined under the output |
1da177e4 LT |
563 | * device. |
564 | */ | |
565 | ||
4be44fcd | 566 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 567 | { |
1da177e4 LT |
568 | acpi_handle h_dummy1; |
569 | int i; | |
2f3d000a | 570 | u32 max_level = 0; |
1da177e4 LT |
571 | union acpi_object *obj = NULL; |
572 | struct acpi_video_device_brightness *br = NULL; | |
573 | ||
1da177e4 | 574 | |
4be44fcd | 575 | memset(&device->cap, 0, 4); |
1da177e4 | 576 | |
90130268 | 577 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
578 | device->cap._ADR = 1; |
579 | } | |
90130268 | 580 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 581 | device->cap._BCL = 1; |
1da177e4 | 582 | } |
90130268 | 583 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 584 | device->cap._BCM = 1; |
1da177e4 | 585 | } |
2f3d000a YL |
586 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
587 | device->cap._BQC = 1; | |
90130268 | 588 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 589 | device->cap._DDC = 1; |
1da177e4 | 590 | } |
90130268 | 591 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
592 | device->cap._DCS = 1; |
593 | } | |
90130268 | 594 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
595 | device->cap._DGS = 1; |
596 | } | |
90130268 | 597 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
598 | device->cap._DSS = 1; |
599 | } | |
600 | ||
f70ac0e9 DK |
601 | if (ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { |
602 | ||
603 | if (obj->package.count >= 2) { | |
604 | int count = 0; | |
605 | union acpi_object *o; | |
606 | ||
607 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
608 | if (!br) { | |
609 | printk(KERN_ERR "can't allocate memory\n"); | |
1da177e4 | 610 | } else { |
f70ac0e9 DK |
611 | br->levels = kmalloc(obj->package.count * |
612 | sizeof *(br->levels), GFP_KERNEL); | |
613 | if (!br->levels) | |
614 | goto out; | |
615 | ||
616 | for (i = 0; i < obj->package.count; i++) { | |
617 | o = (union acpi_object *)&obj->package. | |
618 | elements[i]; | |
619 | if (o->type != ACPI_TYPE_INTEGER) { | |
620 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
621 | continue; | |
622 | } | |
623 | br->levels[count] = (u32) o->integer.value; | |
624 | ||
625 | if (br->levels[count] > max_level) | |
626 | max_level = br->levels[count]; | |
627 | count++; | |
628 | } | |
629 | out: | |
630 | if (count < 2) { | |
631 | kfree(br->levels); | |
632 | kfree(br); | |
633 | } else { | |
634 | br->count = count; | |
635 | device->brightness = br; | |
636 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
637 | "found %d brightness levels\n", | |
638 | count)); | |
639 | } | |
1da177e4 LT |
640 | } |
641 | } | |
f70ac0e9 DK |
642 | |
643 | } else { | |
644 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available LCD brightness level\n")); | |
1da177e4 LT |
645 | } |
646 | ||
d1dd0c23 | 647 | kfree(obj); |
1da177e4 | 648 | |
f70ac0e9 | 649 | if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){ |
2f3d000a YL |
650 | unsigned long tmp; |
651 | static int count = 0; | |
652 | char *name; | |
2f3d000a YL |
653 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
654 | if (!name) | |
655 | return; | |
656 | ||
2f3d000a | 657 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 658 | acpi_video_device_lcd_get_level_current(device, &tmp); |
2f3d000a | 659 | device->backlight = backlight_device_register(name, |
599a52d1 RP |
660 | NULL, device, &acpi_backlight_ops); |
661 | device->backlight->props.max_brightness = max_level; | |
662 | device->backlight->props.brightness = (int)tmp; | |
663 | backlight_update_status(device->backlight); | |
664 | ||
2f3d000a YL |
665 | kfree(name); |
666 | } | |
23b0f015 LY |
667 | if (device->cap._DCS && device->cap._DSS){ |
668 | static int count = 0; | |
669 | char *name; | |
670 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
671 | if (!name) | |
672 | return; | |
673 | sprintf(name, "acpi_video%d", count++); | |
674 | device->output_dev = video_output_register(name, | |
675 | NULL, device, &acpi_output_properties); | |
676 | kfree(name); | |
677 | } | |
d550d98d | 678 | return; |
1da177e4 LT |
679 | } |
680 | ||
681 | /* | |
682 | * Arg: | |
683 | * device : video output device (VGA) | |
684 | * | |
685 | * Return Value: | |
686 | * None | |
687 | * | |
98fb8fe1 | 688 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
689 | */ |
690 | ||
4be44fcd | 691 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 692 | { |
4be44fcd | 693 | acpi_handle h_dummy1; |
1da177e4 | 694 | |
4be44fcd | 695 | memset(&video->cap, 0, 4); |
90130268 | 696 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
697 | video->cap._DOS = 1; |
698 | } | |
90130268 | 699 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
700 | video->cap._DOD = 1; |
701 | } | |
90130268 | 702 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
703 | video->cap._ROM = 1; |
704 | } | |
90130268 | 705 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
706 | video->cap._GPD = 1; |
707 | } | |
90130268 | 708 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
709 | video->cap._SPD = 1; |
710 | } | |
90130268 | 711 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
712 | video->cap._VPO = 1; |
713 | } | |
714 | } | |
715 | ||
716 | /* | |
717 | * Check whether the video bus device has required AML method to | |
718 | * support the desired features | |
719 | */ | |
720 | ||
4be44fcd | 721 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 722 | { |
4be44fcd | 723 | acpi_status status = -ENOENT; |
1da177e4 | 724 | |
1da177e4 LT |
725 | |
726 | if (!video) | |
d550d98d | 727 | return -EINVAL; |
1da177e4 LT |
728 | |
729 | /* Since there is no HID, CID and so on for VGA driver, we have | |
730 | * to check well known required nodes. | |
731 | */ | |
732 | ||
98fb8fe1 | 733 | /* Does this device support video switching? */ |
4be44fcd | 734 | if (video->cap._DOS) { |
1da177e4 LT |
735 | video->flags.multihead = 1; |
736 | status = 0; | |
737 | } | |
738 | ||
98fb8fe1 | 739 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 740 | if (video->cap._ROM) { |
1da177e4 LT |
741 | video->flags.rom = 1; |
742 | status = 0; | |
743 | } | |
744 | ||
98fb8fe1 | 745 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 746 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
747 | video->flags.post = 1; |
748 | status = 0; | |
749 | } | |
750 | ||
d550d98d | 751 | return status; |
1da177e4 LT |
752 | } |
753 | ||
754 | /* -------------------------------------------------------------------------- | |
755 | FS Interface (/proc) | |
756 | -------------------------------------------------------------------------- */ | |
757 | ||
4be44fcd | 758 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
759 | |
760 | /* video devices */ | |
761 | ||
4be44fcd | 762 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 763 | { |
50dd0969 | 764 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 765 | |
1da177e4 LT |
766 | |
767 | if (!dev) | |
768 | goto end; | |
769 | ||
770 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
771 | seq_printf(seq, "type: "); | |
772 | if (dev->flags.crt) | |
773 | seq_printf(seq, "CRT\n"); | |
774 | else if (dev->flags.lcd) | |
775 | seq_printf(seq, "LCD\n"); | |
776 | else if (dev->flags.tvout) | |
777 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
778 | else if (dev->flags.dvi) |
779 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
780 | else |
781 | seq_printf(seq, "UNKNOWN\n"); | |
782 | ||
4be44fcd | 783 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 784 | |
4be44fcd | 785 | end: |
d550d98d | 786 | return 0; |
1da177e4 LT |
787 | } |
788 | ||
789 | static int | |
4be44fcd | 790 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
791 | { |
792 | return single_open(file, acpi_video_device_info_seq_show, | |
793 | PDE(inode)->data); | |
794 | } | |
795 | ||
4be44fcd | 796 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 797 | { |
4be44fcd | 798 | int status; |
50dd0969 | 799 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 800 | unsigned long state; |
1da177e4 | 801 | |
1da177e4 LT |
802 | |
803 | if (!dev) | |
804 | goto end; | |
805 | ||
806 | status = acpi_video_device_get_state(dev, &state); | |
807 | seq_printf(seq, "state: "); | |
808 | if (ACPI_SUCCESS(status)) | |
809 | seq_printf(seq, "0x%02lx\n", state); | |
810 | else | |
811 | seq_printf(seq, "<not supported>\n"); | |
812 | ||
813 | status = acpi_video_device_query(dev, &state); | |
814 | seq_printf(seq, "query: "); | |
815 | if (ACPI_SUCCESS(status)) | |
816 | seq_printf(seq, "0x%02lx\n", state); | |
817 | else | |
818 | seq_printf(seq, "<not supported>\n"); | |
819 | ||
4be44fcd | 820 | end: |
d550d98d | 821 | return 0; |
1da177e4 LT |
822 | } |
823 | ||
824 | static int | |
4be44fcd | 825 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
826 | { |
827 | return single_open(file, acpi_video_device_state_seq_show, | |
828 | PDE(inode)->data); | |
829 | } | |
830 | ||
831 | static ssize_t | |
4be44fcd LB |
832 | acpi_video_device_write_state(struct file *file, |
833 | const char __user * buffer, | |
834 | size_t count, loff_t * data) | |
1da177e4 | 835 | { |
4be44fcd | 836 | int status; |
50dd0969 JE |
837 | struct seq_file *m = file->private_data; |
838 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
839 | char str[12] = { 0 }; |
840 | u32 state = 0; | |
1da177e4 | 841 | |
1da177e4 LT |
842 | |
843 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 844 | return -EINVAL; |
1da177e4 LT |
845 | |
846 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 847 | return -EFAULT; |
1da177e4 LT |
848 | |
849 | str[count] = 0; | |
850 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 851 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
852 | |
853 | status = acpi_video_device_set_state(dev, state); | |
854 | ||
855 | if (status) | |
d550d98d | 856 | return -EFAULT; |
1da177e4 | 857 | |
d550d98d | 858 | return count; |
1da177e4 LT |
859 | } |
860 | ||
861 | static int | |
4be44fcd | 862 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 863 | { |
50dd0969 | 864 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 865 | int i; |
1da177e4 | 866 | |
1da177e4 LT |
867 | |
868 | if (!dev || !dev->brightness) { | |
869 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 870 | return 0; |
1da177e4 LT |
871 | } |
872 | ||
873 | seq_printf(seq, "levels: "); | |
874 | for (i = 0; i < dev->brightness->count; i++) | |
875 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
876 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
877 | ||
d550d98d | 878 | return 0; |
1da177e4 LT |
879 | } |
880 | ||
881 | static int | |
4be44fcd | 882 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
883 | { |
884 | return single_open(file, acpi_video_device_brightness_seq_show, | |
885 | PDE(inode)->data); | |
886 | } | |
887 | ||
888 | static ssize_t | |
4be44fcd LB |
889 | acpi_video_device_write_brightness(struct file *file, |
890 | const char __user * buffer, | |
891 | size_t count, loff_t * data) | |
1da177e4 | 892 | { |
50dd0969 JE |
893 | struct seq_file *m = file->private_data; |
894 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
895 | char str[4] = { 0 }; |
896 | unsigned int level = 0; | |
897 | int i; | |
1da177e4 | 898 | |
1da177e4 | 899 | |
59d399d3 | 900 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 901 | return -EINVAL; |
1da177e4 LT |
902 | |
903 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 904 | return -EFAULT; |
1da177e4 LT |
905 | |
906 | str[count] = 0; | |
907 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 908 | |
1da177e4 | 909 | if (level > 100) |
d550d98d | 910 | return -EFAULT; |
1da177e4 | 911 | |
98fb8fe1 | 912 | /* validate through the list of available levels */ |
1da177e4 LT |
913 | for (i = 0; i < dev->brightness->count; i++) |
914 | if (level == dev->brightness->levels[i]) { | |
4be44fcd LB |
915 | if (ACPI_SUCCESS |
916 | (acpi_video_device_lcd_set_level(dev, level))) | |
1da177e4 LT |
917 | dev->brightness->curr = level; |
918 | break; | |
919 | } | |
920 | ||
d550d98d | 921 | return count; |
1da177e4 LT |
922 | } |
923 | ||
4be44fcd | 924 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 925 | { |
50dd0969 | 926 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
927 | int status; |
928 | int i; | |
929 | union acpi_object *edid = NULL; | |
1da177e4 | 930 | |
1da177e4 LT |
931 | |
932 | if (!dev) | |
933 | goto out; | |
934 | ||
4be44fcd | 935 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 936 | if (ACPI_FAILURE(status)) { |
4be44fcd | 937 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
938 | } |
939 | ||
940 | if (ACPI_FAILURE(status)) { | |
941 | goto out; | |
942 | } | |
943 | ||
944 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
945 | for (i = 0; i < edid->buffer.length; i++) | |
946 | seq_putc(seq, edid->buffer.pointer[i]); | |
947 | } | |
948 | ||
4be44fcd | 949 | out: |
1da177e4 LT |
950 | if (!edid) |
951 | seq_printf(seq, "<not supported>\n"); | |
952 | else | |
953 | kfree(edid); | |
954 | ||
d550d98d | 955 | return 0; |
1da177e4 LT |
956 | } |
957 | ||
958 | static int | |
4be44fcd | 959 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
960 | { |
961 | return single_open(file, acpi_video_device_EDID_seq_show, | |
962 | PDE(inode)->data); | |
963 | } | |
964 | ||
4be44fcd | 965 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 966 | { |
4be44fcd | 967 | struct proc_dir_entry *entry = NULL; |
1da177e4 LT |
968 | struct acpi_video_device *vid_dev; |
969 | ||
1da177e4 LT |
970 | |
971 | if (!device) | |
d550d98d | 972 | return -ENODEV; |
1da177e4 | 973 | |
50dd0969 | 974 | vid_dev = acpi_driver_data(device); |
1da177e4 | 975 | if (!vid_dev) |
d550d98d | 976 | return -ENODEV; |
1da177e4 LT |
977 | |
978 | if (!acpi_device_dir(device)) { | |
979 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 980 | vid_dev->video->dir); |
1da177e4 | 981 | if (!acpi_device_dir(device)) |
d550d98d | 982 | return -ENODEV; |
1da177e4 LT |
983 | acpi_device_dir(device)->owner = THIS_MODULE; |
984 | } | |
985 | ||
986 | /* 'info' [R] */ | |
987 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
988 | if (!entry) | |
d550d98d | 989 | return -ENODEV; |
1da177e4 LT |
990 | else { |
991 | entry->proc_fops = &acpi_video_device_info_fops; | |
992 | entry->data = acpi_driver_data(device); | |
993 | entry->owner = THIS_MODULE; | |
994 | } | |
995 | ||
996 | /* 'state' [R/W] */ | |
4be44fcd LB |
997 | entry = |
998 | create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR, | |
999 | acpi_device_dir(device)); | |
1da177e4 | 1000 | if (!entry) |
d550d98d | 1001 | return -ENODEV; |
1da177e4 | 1002 | else { |
d479e908 | 1003 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1da177e4 | 1004 | entry->proc_fops = &acpi_video_device_state_fops; |
1da177e4 LT |
1005 | entry->data = acpi_driver_data(device); |
1006 | entry->owner = THIS_MODULE; | |
1007 | } | |
1008 | ||
1009 | /* 'brightness' [R/W] */ | |
4be44fcd LB |
1010 | entry = |
1011 | create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
1012 | acpi_device_dir(device)); | |
1da177e4 | 1013 | if (!entry) |
d550d98d | 1014 | return -ENODEV; |
1da177e4 | 1015 | else { |
d479e908 | 1016 | acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness; |
1da177e4 | 1017 | entry->proc_fops = &acpi_video_device_brightness_fops; |
1da177e4 LT |
1018 | entry->data = acpi_driver_data(device); |
1019 | entry->owner = THIS_MODULE; | |
1020 | } | |
1021 | ||
1022 | /* 'EDID' [R] */ | |
1023 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); | |
1024 | if (!entry) | |
d550d98d | 1025 | return -ENODEV; |
1da177e4 LT |
1026 | else { |
1027 | entry->proc_fops = &acpi_video_device_EDID_fops; | |
1028 | entry->data = acpi_driver_data(device); | |
1029 | entry->owner = THIS_MODULE; | |
1030 | } | |
1031 | ||
d550d98d | 1032 | return 0; |
1da177e4 LT |
1033 | } |
1034 | ||
4be44fcd | 1035 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1036 | { |
1037 | struct acpi_video_device *vid_dev; | |
1da177e4 | 1038 | |
50dd0969 | 1039 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1040 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 1041 | return -ENODEV; |
1da177e4 LT |
1042 | |
1043 | if (acpi_device_dir(device)) { | |
1044 | remove_proc_entry("info", acpi_device_dir(device)); | |
1045 | remove_proc_entry("state", acpi_device_dir(device)); | |
1046 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
1047 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
4be44fcd | 1048 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1049 | acpi_device_dir(device) = NULL; |
1050 | } | |
1051 | ||
d550d98d | 1052 | return 0; |
1da177e4 LT |
1053 | } |
1054 | ||
1da177e4 | 1055 | /* video bus */ |
4be44fcd | 1056 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1057 | { |
50dd0969 | 1058 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1059 | |
1da177e4 LT |
1060 | |
1061 | if (!video) | |
1062 | goto end; | |
1063 | ||
1064 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1065 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1066 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1067 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1068 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1069 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1070 | |
4be44fcd | 1071 | end: |
d550d98d | 1072 | return 0; |
1da177e4 LT |
1073 | } |
1074 | ||
4be44fcd | 1075 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1076 | { |
4be44fcd LB |
1077 | return single_open(file, acpi_video_bus_info_seq_show, |
1078 | PDE(inode)->data); | |
1da177e4 LT |
1079 | } |
1080 | ||
4be44fcd | 1081 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1082 | { |
50dd0969 | 1083 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1084 | |
1da177e4 LT |
1085 | |
1086 | if (!video) | |
1087 | goto end; | |
1088 | ||
1089 | printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__); | |
1090 | seq_printf(seq, "<TODO>\n"); | |
1091 | ||
4be44fcd | 1092 | end: |
d550d98d | 1093 | return 0; |
1da177e4 LT |
1094 | } |
1095 | ||
4be44fcd | 1096 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1097 | { |
1098 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1099 | } | |
1100 | ||
4be44fcd | 1101 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1102 | { |
50dd0969 | 1103 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1104 | unsigned long options; |
1105 | int status; | |
1da177e4 | 1106 | |
1da177e4 LT |
1107 | |
1108 | if (!video) | |
1109 | goto end; | |
1110 | ||
1111 | status = acpi_video_bus_POST_options(video, &options); | |
1112 | if (ACPI_SUCCESS(status)) { | |
1113 | if (!(options & 1)) { | |
4be44fcd LB |
1114 | printk(KERN_WARNING PREFIX |
1115 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1116 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1117 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 LT |
1118 | } |
1119 | printk("%lx\n", options); | |
98fb8fe1 | 1120 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1121 | if (options & 2) |
1122 | seq_printf(seq, " <PCI video>"); | |
1123 | if (options & 4) | |
1124 | seq_printf(seq, " <AGP video>"); | |
1125 | seq_putc(seq, '\n'); | |
1126 | } else | |
1127 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1128 | end: |
d550d98d | 1129 | return 0; |
1da177e4 LT |
1130 | } |
1131 | ||
1132 | static int | |
4be44fcd | 1133 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1134 | { |
4be44fcd LB |
1135 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1136 | PDE(inode)->data); | |
1da177e4 LT |
1137 | } |
1138 | ||
4be44fcd | 1139 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1140 | { |
50dd0969 | 1141 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1142 | int status; |
1143 | unsigned long id; | |
1da177e4 | 1144 | |
1da177e4 LT |
1145 | |
1146 | if (!video) | |
1147 | goto end; | |
1148 | ||
4be44fcd | 1149 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1150 | if (!ACPI_SUCCESS(status)) { |
1151 | seq_printf(seq, "<not supported>\n"); | |
1152 | goto end; | |
1153 | } | |
98fb8fe1 | 1154 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1155 | |
4be44fcd | 1156 | end: |
d550d98d | 1157 | return 0; |
1da177e4 LT |
1158 | } |
1159 | ||
4be44fcd | 1160 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1161 | { |
50dd0969 | 1162 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1163 | |
1da177e4 | 1164 | |
4be44fcd | 1165 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1166 | |
d550d98d | 1167 | return 0; |
1da177e4 LT |
1168 | } |
1169 | ||
4be44fcd | 1170 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1171 | { |
4be44fcd LB |
1172 | return single_open(file, acpi_video_bus_POST_seq_show, |
1173 | PDE(inode)->data); | |
1da177e4 LT |
1174 | } |
1175 | ||
4be44fcd | 1176 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1177 | { |
1178 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1179 | } | |
1180 | ||
1181 | static ssize_t | |
4be44fcd LB |
1182 | acpi_video_bus_write_POST(struct file *file, |
1183 | const char __user * buffer, | |
1184 | size_t count, loff_t * data) | |
1da177e4 | 1185 | { |
4be44fcd | 1186 | int status; |
50dd0969 JE |
1187 | struct seq_file *m = file->private_data; |
1188 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1189 | char str[12] = { 0 }; |
1190 | unsigned long opt, options; | |
1da177e4 | 1191 | |
1da177e4 | 1192 | |
1da177e4 | 1193 | if (!video || count + 1 > sizeof str) |
d550d98d | 1194 | return -EINVAL; |
1da177e4 LT |
1195 | |
1196 | status = acpi_video_bus_POST_options(video, &options); | |
1197 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1198 | return -EINVAL; |
1da177e4 LT |
1199 | |
1200 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1201 | return -EFAULT; |
1da177e4 LT |
1202 | |
1203 | str[count] = 0; | |
1204 | opt = strtoul(str, NULL, 0); | |
1205 | if (opt > 3) | |
d550d98d | 1206 | return -EFAULT; |
1da177e4 | 1207 | |
98fb8fe1 | 1208 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1209 | options |= 1; |
1210 | ||
1211 | if (options & (1ul << opt)) { | |
4be44fcd | 1212 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1213 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1214 | return -EFAULT; |
1da177e4 LT |
1215 | |
1216 | } | |
1217 | ||
d550d98d | 1218 | return count; |
1da177e4 LT |
1219 | } |
1220 | ||
1221 | static ssize_t | |
4be44fcd LB |
1222 | acpi_video_bus_write_DOS(struct file *file, |
1223 | const char __user * buffer, | |
1224 | size_t count, loff_t * data) | |
1da177e4 | 1225 | { |
4be44fcd | 1226 | int status; |
50dd0969 JE |
1227 | struct seq_file *m = file->private_data; |
1228 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1229 | char str[12] = { 0 }; |
1230 | unsigned long opt; | |
1da177e4 | 1231 | |
1da177e4 | 1232 | |
1da177e4 | 1233 | if (!video || count + 1 > sizeof str) |
d550d98d | 1234 | return -EINVAL; |
1da177e4 LT |
1235 | |
1236 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1237 | return -EFAULT; |
1da177e4 LT |
1238 | |
1239 | str[count] = 0; | |
1240 | opt = strtoul(str, NULL, 0); | |
1241 | if (opt > 7) | |
d550d98d | 1242 | return -EFAULT; |
1da177e4 | 1243 | |
4be44fcd | 1244 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1245 | |
1246 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1247 | return -EFAULT; |
1da177e4 | 1248 | |
d550d98d | 1249 | return count; |
1da177e4 LT |
1250 | } |
1251 | ||
4be44fcd | 1252 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1253 | { |
4be44fcd LB |
1254 | struct proc_dir_entry *entry = NULL; |
1255 | struct acpi_video_bus *video; | |
1da177e4 | 1256 | |
1da177e4 | 1257 | |
50dd0969 | 1258 | video = acpi_driver_data(device); |
1da177e4 LT |
1259 | |
1260 | if (!acpi_device_dir(device)) { | |
1261 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1262 | acpi_video_dir); |
1da177e4 | 1263 | if (!acpi_device_dir(device)) |
d550d98d | 1264 | return -ENODEV; |
1da177e4 LT |
1265 | video->dir = acpi_device_dir(device); |
1266 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1267 | } | |
1268 | ||
1269 | /* 'info' [R] */ | |
1270 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1271 | if (!entry) | |
d550d98d | 1272 | return -ENODEV; |
1da177e4 LT |
1273 | else { |
1274 | entry->proc_fops = &acpi_video_bus_info_fops; | |
1275 | entry->data = acpi_driver_data(device); | |
1276 | entry->owner = THIS_MODULE; | |
1277 | } | |
1278 | ||
1279 | /* 'ROM' [R] */ | |
1280 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); | |
1281 | if (!entry) | |
d550d98d | 1282 | return -ENODEV; |
1da177e4 LT |
1283 | else { |
1284 | entry->proc_fops = &acpi_video_bus_ROM_fops; | |
1285 | entry->data = acpi_driver_data(device); | |
1286 | entry->owner = THIS_MODULE; | |
1287 | } | |
1288 | ||
1289 | /* 'POST_info' [R] */ | |
4be44fcd LB |
1290 | entry = |
1291 | create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); | |
1da177e4 | 1292 | if (!entry) |
d550d98d | 1293 | return -ENODEV; |
1da177e4 LT |
1294 | else { |
1295 | entry->proc_fops = &acpi_video_bus_POST_info_fops; | |
1296 | entry->data = acpi_driver_data(device); | |
1297 | entry->owner = THIS_MODULE; | |
1298 | } | |
1299 | ||
1300 | /* 'POST' [R/W] */ | |
4be44fcd LB |
1301 | entry = |
1302 | create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR, | |
1303 | acpi_device_dir(device)); | |
1da177e4 | 1304 | if (!entry) |
d550d98d | 1305 | return -ENODEV; |
1da177e4 | 1306 | else { |
d479e908 | 1307 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
1da177e4 | 1308 | entry->proc_fops = &acpi_video_bus_POST_fops; |
1da177e4 LT |
1309 | entry->data = acpi_driver_data(device); |
1310 | entry->owner = THIS_MODULE; | |
1311 | } | |
1312 | ||
1313 | /* 'DOS' [R/W] */ | |
4be44fcd LB |
1314 | entry = |
1315 | create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR, | |
1316 | acpi_device_dir(device)); | |
1da177e4 | 1317 | if (!entry) |
d550d98d | 1318 | return -ENODEV; |
1da177e4 | 1319 | else { |
d479e908 | 1320 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
1da177e4 | 1321 | entry->proc_fops = &acpi_video_bus_DOS_fops; |
1da177e4 LT |
1322 | entry->data = acpi_driver_data(device); |
1323 | entry->owner = THIS_MODULE; | |
1324 | } | |
1325 | ||
d550d98d | 1326 | return 0; |
1da177e4 LT |
1327 | } |
1328 | ||
4be44fcd | 1329 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1330 | { |
4be44fcd | 1331 | struct acpi_video_bus *video; |
1da177e4 | 1332 | |
1da177e4 | 1333 | |
50dd0969 | 1334 | video = acpi_driver_data(device); |
1da177e4 LT |
1335 | |
1336 | if (acpi_device_dir(device)) { | |
1337 | remove_proc_entry("info", acpi_device_dir(device)); | |
1338 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1339 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1340 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1341 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
4be44fcd | 1342 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1343 | acpi_device_dir(device) = NULL; |
1344 | } | |
1345 | ||
d550d98d | 1346 | return 0; |
1da177e4 LT |
1347 | } |
1348 | ||
1349 | /* -------------------------------------------------------------------------- | |
1350 | Driver Interface | |
1351 | -------------------------------------------------------------------------- */ | |
1352 | ||
1353 | /* device interface */ | |
82cae999 RZ |
1354 | static struct acpi_video_device_attrib* |
1355 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1356 | { | |
1357 | int count; | |
1358 | ||
1359 | for(count = 0; count < video->attached_count; count++) | |
1360 | if((video->attached_array[count].value.int_val & 0xffff) == device_id) | |
1361 | return &(video->attached_array[count].value.attrib); | |
1362 | return NULL; | |
1363 | } | |
1da177e4 LT |
1364 | |
1365 | static int | |
4be44fcd LB |
1366 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1367 | struct acpi_video_bus *video) | |
1da177e4 | 1368 | { |
4be44fcd | 1369 | unsigned long device_id; |
973bf491 | 1370 | int status; |
4be44fcd | 1371 | struct acpi_video_device *data; |
82cae999 | 1372 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1373 | |
1374 | if (!device || !video) | |
d550d98d | 1375 | return -EINVAL; |
1da177e4 | 1376 | |
4be44fcd LB |
1377 | status = |
1378 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1379 | if (ACPI_SUCCESS(status)) { |
1380 | ||
36bcbec7 | 1381 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1382 | if (!data) |
d550d98d | 1383 | return -ENOMEM; |
1da177e4 | 1384 | |
1da177e4 LT |
1385 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1386 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1387 | acpi_driver_data(device) = data; | |
1388 | ||
1389 | data->device_id = device_id; | |
1390 | data->video = video; | |
1391 | data->dev = device; | |
1392 | ||
82cae999 RZ |
1393 | attribute = acpi_video_get_device_attr(video, device_id); |
1394 | ||
1395 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1396 | switch (attribute->display_type) { | |
1397 | case ACPI_VIDEO_DISPLAY_CRT: | |
1398 | data->flags.crt = 1; | |
1399 | break; | |
1400 | case ACPI_VIDEO_DISPLAY_TV: | |
1401 | data->flags.tvout = 1; | |
1402 | break; | |
1403 | case ACPI_VIDEO_DISPLAY_DVI: | |
1404 | data->flags.dvi = 1; | |
1405 | break; | |
1406 | case ACPI_VIDEO_DISPLAY_LCD: | |
1407 | data->flags.lcd = 1; | |
1408 | break; | |
1409 | default: | |
1410 | data->flags.unknown = 1; | |
1411 | break; | |
1412 | } | |
1413 | if(attribute->bios_can_detect) | |
1414 | data->flags.bios = 1; | |
1415 | } else | |
1da177e4 | 1416 | data->flags.unknown = 1; |
4be44fcd | 1417 | |
1da177e4 LT |
1418 | acpi_video_device_bind(video, data); |
1419 | acpi_video_device_find_cap(data); | |
1420 | ||
90130268 | 1421 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1422 | ACPI_DEVICE_NOTIFY, |
1423 | acpi_video_device_notify, | |
1424 | data); | |
1da177e4 LT |
1425 | if (ACPI_FAILURE(status)) { |
1426 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1427 | "Error installing notify handler\n")); |
973bf491 YL |
1428 | if(data->brightness) |
1429 | kfree(data->brightness->levels); | |
1430 | kfree(data->brightness); | |
1431 | kfree(data); | |
1432 | return -ENODEV; | |
1da177e4 LT |
1433 | } |
1434 | ||
1435 | down(&video->sem); | |
1436 | list_add_tail(&data->entry, &video->video_device_list); | |
1437 | up(&video->sem); | |
1438 | ||
1439 | acpi_video_device_add_fs(device); | |
1440 | ||
d550d98d | 1441 | return 0; |
1da177e4 LT |
1442 | } |
1443 | ||
d550d98d | 1444 | return -ENOENT; |
1da177e4 LT |
1445 | } |
1446 | ||
1447 | /* | |
1448 | * Arg: | |
1449 | * video : video bus device | |
1450 | * | |
1451 | * Return: | |
1452 | * none | |
1453 | * | |
1454 | * Enumerate the video device list of the video bus, | |
1455 | * bind the ids with the corresponding video devices | |
1456 | * under the video bus. | |
4be44fcd | 1457 | */ |
1da177e4 | 1458 | |
4be44fcd | 1459 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1460 | { |
4be44fcd | 1461 | struct list_head *node, *next; |
1da177e4 | 1462 | list_for_each_safe(node, next, &video->video_device_list) { |
4be44fcd LB |
1463 | struct acpi_video_device *dev = |
1464 | container_of(node, struct acpi_video_device, entry); | |
1465 | acpi_video_device_bind(video, dev); | |
1da177e4 LT |
1466 | } |
1467 | } | |
1468 | ||
1469 | /* | |
1470 | * Arg: | |
1471 | * video : video bus device | |
1472 | * device : video output device under the video | |
1473 | * bus | |
1474 | * | |
1475 | * Return: | |
1476 | * none | |
1477 | * | |
1478 | * Bind the ids with the corresponding video devices | |
1479 | * under the video bus. | |
4be44fcd | 1480 | */ |
1da177e4 LT |
1481 | |
1482 | static void | |
4be44fcd LB |
1483 | acpi_video_device_bind(struct acpi_video_bus *video, |
1484 | struct acpi_video_device *device) | |
1da177e4 | 1485 | { |
4be44fcd | 1486 | int i; |
1da177e4 LT |
1487 | |
1488 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1489 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
4be44fcd LB |
1490 | |
1491 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1492 | i < video->attached_count; i++) { | |
1493 | if (device->device_id == (IDS_VAL(i) & 0xffff)) { | |
1da177e4 LT |
1494 | IDS_BIND(i) = device; |
1495 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1496 | } | |
1497 | } | |
1498 | #undef IDS_VAL | |
1499 | #undef IDS_BIND | |
1500 | } | |
1501 | ||
1502 | /* | |
1503 | * Arg: | |
1504 | * video : video bus device | |
1505 | * | |
1506 | * Return: | |
1507 | * < 0 : error | |
1508 | * | |
1509 | * Call _DOD to enumerate all devices attached to display adapter | |
1510 | * | |
4be44fcd | 1511 | */ |
1da177e4 LT |
1512 | |
1513 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1514 | { | |
4be44fcd LB |
1515 | int status; |
1516 | int count; | |
1517 | int i; | |
1da177e4 | 1518 | struct acpi_video_enumerated_device *active_device_list; |
4be44fcd LB |
1519 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1520 | union acpi_object *dod = NULL; | |
1521 | union acpi_object *obj; | |
1da177e4 | 1522 | |
90130268 | 1523 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1524 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1525 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1526 | return status; |
1da177e4 LT |
1527 | } |
1528 | ||
50dd0969 | 1529 | dod = buffer.pointer; |
1da177e4 | 1530 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1531 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1532 | status = -EFAULT; |
1533 | goto out; | |
1534 | } | |
1535 | ||
1536 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1537 | dod->package.count)); |
1da177e4 | 1538 | |
4be44fcd LB |
1539 | active_device_list = kmalloc((1 + |
1540 | dod->package.count) * | |
1541 | sizeof(struct | |
1542 | acpi_video_enumerated_device), | |
1543 | GFP_KERNEL); | |
1da177e4 LT |
1544 | |
1545 | if (!active_device_list) { | |
1546 | status = -ENOMEM; | |
1547 | goto out; | |
1548 | } | |
1549 | ||
1550 | count = 0; | |
1551 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1552 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1553 | |
1554 | if (obj->type != ACPI_TYPE_INTEGER) { | |
6468463a | 1555 | printk(KERN_ERR PREFIX "Invalid _DOD data\n"); |
4be44fcd LB |
1556 | active_device_list[i].value.int_val = |
1557 | ACPI_VIDEO_HEAD_INVALID; | |
1da177e4 LT |
1558 | } |
1559 | active_device_list[i].value.int_val = obj->integer.value; | |
1560 | active_device_list[i].bind_info = NULL; | |
4be44fcd LB |
1561 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1562 | (int)obj->integer.value)); | |
1da177e4 LT |
1563 | count++; |
1564 | } | |
1565 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1566 | ||
6044ec88 | 1567 | kfree(video->attached_array); |
4be44fcd | 1568 | |
1da177e4 LT |
1569 | video->attached_array = active_device_list; |
1570 | video->attached_count = count; | |
4be44fcd | 1571 | out: |
02438d87 | 1572 | kfree(buffer.pointer); |
d550d98d | 1573 | return status; |
1da177e4 LT |
1574 | } |
1575 | ||
1576 | /* | |
1577 | * Arg: | |
1578 | * video : video bus device | |
98fb8fe1 | 1579 | * event : notify event |
1da177e4 LT |
1580 | * |
1581 | * Return: | |
1582 | * < 0 : error | |
1583 | * | |
1584 | * 1. Find out the current active output device. | |
98fb8fe1 | 1585 | * 2. Identify the next output device to switch to. |
1da177e4 | 1586 | * 3. call _DSS to do actual switch. |
4be44fcd | 1587 | */ |
1da177e4 | 1588 | |
4be44fcd | 1589 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event) |
1da177e4 | 1590 | { |
4be44fcd LB |
1591 | struct list_head *node, *next; |
1592 | struct acpi_video_device *dev = NULL; | |
1593 | struct acpi_video_device *dev_next = NULL; | |
1594 | struct acpi_video_device *dev_prev = NULL; | |
1da177e4 LT |
1595 | unsigned long state; |
1596 | int status = 0; | |
1597 | ||
1da177e4 LT |
1598 | |
1599 | list_for_each_safe(node, next, &video->video_device_list) { | |
7334571f | 1600 | dev = container_of(node, struct acpi_video_device, entry); |
1da177e4 | 1601 | status = acpi_video_device_get_state(dev, &state); |
4be44fcd LB |
1602 | if (state & 0x2) { |
1603 | dev_next = | |
1604 | container_of(node->next, struct acpi_video_device, | |
1605 | entry); | |
1606 | dev_prev = | |
1607 | container_of(node->prev, struct acpi_video_device, | |
1608 | entry); | |
1da177e4 LT |
1609 | goto out; |
1610 | } | |
1611 | } | |
1612 | dev_next = container_of(node->next, struct acpi_video_device, entry); | |
1613 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); | |
4be44fcd | 1614 | out: |
1da177e4 LT |
1615 | switch (event) { |
1616 | case ACPI_VIDEO_NOTIFY_CYCLE: | |
1617 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: | |
1618 | acpi_video_device_set_state(dev, 0); | |
1619 | acpi_video_device_set_state(dev_next, 0x80000001); | |
1620 | break; | |
1621 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: | |
1622 | acpi_video_device_set_state(dev, 0); | |
1623 | acpi_video_device_set_state(dev_prev, 0x80000001); | |
1624 | default: | |
1625 | break; | |
1626 | } | |
1627 | ||
d550d98d | 1628 | return status; |
1da177e4 LT |
1629 | } |
1630 | ||
4be44fcd LB |
1631 | static int |
1632 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1633 | u32 level_current, u32 event) | |
1da177e4 | 1634 | { |
f4715189 TT |
1635 | int min, max, min_above, max_below, i, l; |
1636 | max = max_below = 0; | |
1637 | min = min_above = 255; | |
1638 | for (i = 0; i < device->brightness->count; i++) { | |
1639 | l = device->brightness->levels[i]; | |
1640 | if (l < min) | |
1641 | min = l; | |
1642 | if (l > max) | |
1643 | max = l; | |
1644 | if (l < min_above && l > level_current) | |
1645 | min_above = l; | |
1646 | if (l > max_below && l < level_current) | |
1647 | max_below = l; | |
1648 | } | |
1649 | ||
1650 | switch (event) { | |
1651 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1652 | return (level_current < max) ? min_above : min; | |
1653 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1654 | return (level_current < max) ? min_above : max; | |
1655 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1656 | return (level_current > min) ? max_below : min; | |
1657 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1658 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1659 | return 0; | |
1660 | default: | |
1661 | return level_current; | |
1662 | } | |
1da177e4 LT |
1663 | } |
1664 | ||
1da177e4 | 1665 | static void |
4be44fcd | 1666 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 LT |
1667 | { |
1668 | unsigned long level_current, level_next; | |
1669 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1670 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1671 | acpi_video_device_lcd_set_level(device, level_next); | |
1672 | } | |
1673 | ||
1674 | static int | |
4be44fcd LB |
1675 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1676 | struct acpi_device *device) | |
1da177e4 | 1677 | { |
4be44fcd LB |
1678 | int status = 0; |
1679 | struct list_head *node, *next; | |
1da177e4 | 1680 | |
1da177e4 LT |
1681 | |
1682 | acpi_video_device_enumerate(video); | |
1683 | ||
1684 | list_for_each_safe(node, next, &device->children) { | |
4be44fcd LB |
1685 | struct acpi_device *dev = |
1686 | list_entry(node, struct acpi_device, node); | |
1da177e4 LT |
1687 | |
1688 | if (!dev) | |
1689 | continue; | |
1690 | ||
1691 | status = acpi_video_bus_get_one_device(dev, video); | |
1692 | if (ACPI_FAILURE(status)) { | |
a6fc6720 | 1693 | ACPI_EXCEPTION((AE_INFO, status, "Cant attach device")); |
1da177e4 LT |
1694 | continue; |
1695 | } | |
1696 | ||
1697 | } | |
d550d98d | 1698 | return status; |
1da177e4 LT |
1699 | } |
1700 | ||
4be44fcd | 1701 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1702 | { |
031ec77b | 1703 | acpi_status status; |
1da177e4 LT |
1704 | struct acpi_video_bus *video; |
1705 | ||
1da177e4 LT |
1706 | |
1707 | if (!device || !device->video) | |
d550d98d | 1708 | return -ENOENT; |
1da177e4 LT |
1709 | |
1710 | video = device->video; | |
1711 | ||
1712 | down(&video->sem); | |
1713 | list_del(&device->entry); | |
1714 | up(&video->sem); | |
1715 | acpi_video_device_remove_fs(device->dev); | |
1716 | ||
90130268 | 1717 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1718 | ACPI_DEVICE_NOTIFY, |
1719 | acpi_video_device_notify); | |
599a52d1 | 1720 | backlight_device_unregister(device->backlight); |
23b0f015 | 1721 | video_output_unregister(device->output_dev); |
d550d98d | 1722 | return 0; |
1da177e4 LT |
1723 | } |
1724 | ||
4be44fcd | 1725 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1726 | { |
4be44fcd LB |
1727 | int status; |
1728 | struct list_head *node, *next; | |
1da177e4 | 1729 | |
1da177e4 LT |
1730 | |
1731 | list_for_each_safe(node, next, &video->video_device_list) { | |
4be44fcd LB |
1732 | struct acpi_video_device *data = |
1733 | list_entry(node, struct acpi_video_device, entry); | |
1da177e4 LT |
1734 | if (!data) |
1735 | continue; | |
1736 | ||
1737 | status = acpi_video_bus_put_one_device(data); | |
4be44fcd LB |
1738 | if (ACPI_FAILURE(status)) |
1739 | printk(KERN_WARNING PREFIX | |
1740 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1741 | |
d384ea69 | 1742 | if (data->brightness) |
973bf491 | 1743 | kfree(data->brightness->levels); |
6044ec88 | 1744 | kfree(data->brightness); |
1da177e4 LT |
1745 | kfree(data); |
1746 | } | |
1747 | ||
d550d98d | 1748 | return 0; |
1da177e4 LT |
1749 | } |
1750 | ||
1751 | /* acpi_video interface */ | |
1752 | ||
4be44fcd | 1753 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1754 | { |
1755 | return acpi_video_bus_DOS(video, 1, 0); | |
1756 | } | |
1757 | ||
4be44fcd | 1758 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1759 | { |
1760 | return acpi_video_bus_DOS(video, 0, 1); | |
1761 | } | |
1762 | ||
4be44fcd | 1763 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1764 | { |
50dd0969 | 1765 | struct acpi_video_bus *video = data; |
4be44fcd | 1766 | struct acpi_device *device = NULL; |
1da177e4 | 1767 | |
1da177e4 LT |
1768 | printk("video bus notify\n"); |
1769 | ||
1770 | if (!video) | |
d550d98d | 1771 | return; |
1da177e4 | 1772 | |
e6afa0de | 1773 | device = video->device; |
1da177e4 LT |
1774 | |
1775 | switch (event) { | |
98fb8fe1 | 1776 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 LT |
1777 | * most likely via hotkey. */ |
1778 | acpi_bus_generate_event(device, event, 0); | |
1779 | break; | |
1780 | ||
98fb8fe1 | 1781 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1782 | * connector. */ |
1783 | acpi_video_device_enumerate(video); | |
1784 | acpi_video_device_rebind(video); | |
1785 | acpi_video_switch_output(video, event); | |
1786 | acpi_bus_generate_event(device, event, 0); | |
1787 | break; | |
1788 | ||
4be44fcd LB |
1789 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
1790 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ | |
1791 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ | |
1da177e4 LT |
1792 | acpi_video_switch_output(video, event); |
1793 | acpi_bus_generate_event(device, event, 0); | |
1794 | break; | |
1795 | ||
1796 | default: | |
1797 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1798 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1799 | break; |
1800 | } | |
1801 | ||
d550d98d | 1802 | return; |
1da177e4 LT |
1803 | } |
1804 | ||
4be44fcd | 1805 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1806 | { |
50dd0969 | 1807 | struct acpi_video_device *video_device = data; |
4be44fcd | 1808 | struct acpi_device *device = NULL; |
1da177e4 | 1809 | |
1da177e4 | 1810 | if (!video_device) |
d550d98d | 1811 | return; |
1da177e4 | 1812 | |
e6afa0de | 1813 | device = video_device->dev; |
1da177e4 LT |
1814 | |
1815 | switch (event) { | |
4be44fcd LB |
1816 | case ACPI_VIDEO_NOTIFY_SWITCH: /* change in status (cycle output device) */ |
1817 | case ACPI_VIDEO_NOTIFY_PROBE: /* change in status (output device status) */ | |
1da177e4 LT |
1818 | acpi_bus_generate_event(device, event, 0); |
1819 | break; | |
4be44fcd LB |
1820 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
1821 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ | |
1822 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ | |
1823 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ | |
1824 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ | |
1825 | acpi_video_switch_brightness(video_device, event); | |
1da177e4 LT |
1826 | acpi_bus_generate_event(device, event, 0); |
1827 | break; | |
1828 | default: | |
1829 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1830 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1831 | break; |
1832 | } | |
d550d98d | 1833 | return; |
1da177e4 LT |
1834 | } |
1835 | ||
4be44fcd | 1836 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1837 | { |
4be44fcd LB |
1838 | int result = 0; |
1839 | acpi_status status = 0; | |
1840 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 1841 | |
4be44fcd | 1842 | |
1da177e4 | 1843 | if (!device) |
d550d98d | 1844 | return -EINVAL; |
1da177e4 | 1845 | |
36bcbec7 | 1846 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 1847 | if (!video) |
d550d98d | 1848 | return -ENOMEM; |
1da177e4 | 1849 | |
e6afa0de | 1850 | video->device = device; |
1da177e4 LT |
1851 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
1852 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1853 | acpi_driver_data(device) = video; | |
1854 | ||
1855 | acpi_video_bus_find_cap(video); | |
1856 | result = acpi_video_bus_check(video); | |
1857 | if (result) | |
1858 | goto end; | |
1859 | ||
1860 | result = acpi_video_bus_add_fs(device); | |
1861 | if (result) | |
1862 | goto end; | |
1863 | ||
1864 | init_MUTEX(&video->sem); | |
1865 | INIT_LIST_HEAD(&video->video_device_list); | |
1866 | ||
1867 | acpi_video_bus_get_devices(video, device); | |
1868 | acpi_video_bus_start_devices(video); | |
1869 | ||
90130268 | 1870 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1871 | ACPI_DEVICE_NOTIFY, |
1872 | acpi_video_bus_notify, video); | |
1da177e4 LT |
1873 | if (ACPI_FAILURE(status)) { |
1874 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1875 | "Error installing notify handler\n")); |
973bf491 YL |
1876 | acpi_video_bus_stop_devices(video); |
1877 | acpi_video_bus_put_devices(video); | |
1878 | kfree(video->attached_array); | |
1879 | acpi_video_bus_remove_fs(device); | |
1da177e4 LT |
1880 | result = -ENODEV; |
1881 | goto end; | |
1882 | } | |
1883 | ||
1884 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", | |
4be44fcd LB |
1885 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
1886 | video->flags.multihead ? "yes" : "no", | |
1887 | video->flags.rom ? "yes" : "no", | |
1888 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 1889 | |
4be44fcd | 1890 | end: |
973bf491 | 1891 | if (result) |
1da177e4 | 1892 | kfree(video); |
1da177e4 | 1893 | |
d550d98d | 1894 | return result; |
1da177e4 LT |
1895 | } |
1896 | ||
4be44fcd | 1897 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 1898 | { |
4be44fcd LB |
1899 | acpi_status status = 0; |
1900 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 1901 | |
1da177e4 LT |
1902 | |
1903 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 1904 | return -EINVAL; |
1da177e4 | 1905 | |
50dd0969 | 1906 | video = acpi_driver_data(device); |
1da177e4 LT |
1907 | |
1908 | acpi_video_bus_stop_devices(video); | |
1909 | ||
90130268 | 1910 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
1911 | ACPI_DEVICE_NOTIFY, |
1912 | acpi_video_bus_notify); | |
1da177e4 LT |
1913 | |
1914 | acpi_video_bus_put_devices(video); | |
1915 | acpi_video_bus_remove_fs(device); | |
1916 | ||
6044ec88 | 1917 | kfree(video->attached_array); |
1da177e4 LT |
1918 | kfree(video); |
1919 | ||
d550d98d | 1920 | return 0; |
1da177e4 LT |
1921 | } |
1922 | ||
4be44fcd | 1923 | static int __init acpi_video_init(void) |
1da177e4 | 1924 | { |
4be44fcd | 1925 | int result = 0; |
1da177e4 | 1926 | |
1da177e4 LT |
1927 | |
1928 | /* | |
4be44fcd LB |
1929 | acpi_dbg_level = 0xFFFFFFFF; |
1930 | acpi_dbg_layer = 0x08000000; | |
1931 | */ | |
1da177e4 LT |
1932 | |
1933 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1934 | if (!acpi_video_dir) | |
d550d98d | 1935 | return -ENODEV; |
1da177e4 LT |
1936 | acpi_video_dir->owner = THIS_MODULE; |
1937 | ||
1938 | result = acpi_bus_register_driver(&acpi_video_bus); | |
1939 | if (result < 0) { | |
1940 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 1941 | return -ENODEV; |
1da177e4 LT |
1942 | } |
1943 | ||
d550d98d | 1944 | return 0; |
1da177e4 LT |
1945 | } |
1946 | ||
4be44fcd | 1947 | static void __exit acpi_video_exit(void) |
1da177e4 | 1948 | { |
1da177e4 LT |
1949 | |
1950 | acpi_bus_unregister_driver(&acpi_video_bus); | |
1951 | ||
1952 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1953 | ||
d550d98d | 1954 | return; |
1da177e4 LT |
1955 | } |
1956 | ||
1957 | module_init(acpi_video_init); | |
1958 | module_exit(acpi_video_exit); |