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> |
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 LT |
76 | |
77 | static struct acpi_driver acpi_video_bus = { | |
c2b6705b | 78 | .name = "video", |
1da177e4 | 79 | .class = ACPI_VIDEO_CLASS, |
ae843332 | 80 | .ids = ACPI_VIDEO_HID, |
1da177e4 LT |
81 | .ops = { |
82 | .add = acpi_video_bus_add, | |
83 | .remove = acpi_video_bus_remove, | |
4be44fcd | 84 | }, |
1da177e4 LT |
85 | }; |
86 | ||
87 | struct acpi_video_bus_flags { | |
4be44fcd LB |
88 | u8 multihead:1; /* can switch video heads */ |
89 | u8 rom:1; /* can retrieve a video rom */ | |
90 | u8 post:1; /* can configure the head to */ | |
91 | u8 reserved:5; | |
1da177e4 LT |
92 | }; |
93 | ||
94 | struct acpi_video_bus_cap { | |
4be44fcd LB |
95 | u8 _DOS:1; /*Enable/Disable output switching */ |
96 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
97 | u8 _ROM:1; /*Get ROM Data */ | |
98 | u8 _GPD:1; /*Get POST Device */ | |
99 | u8 _SPD:1; /*Set POST Device */ | |
100 | u8 _VPO:1; /*Video POST Options */ | |
101 | u8 reserved:2; | |
1da177e4 LT |
102 | }; |
103 | ||
4be44fcd LB |
104 | struct acpi_video_device_attrib { |
105 | u32 display_index:4; /* A zero-based instance of the Display */ | |
98fb8fe1 | 106 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
4be44fcd | 107 | u32 display_type:4; /*Describe the specific type in use */ |
98fb8fe1 | 108 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
4be44fcd LB |
109 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
110 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
111 | the VGA device. */ | |
112 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
113 | u32 reserved:10; /*Must be 0 */ | |
114 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
115 | }; |
116 | ||
117 | struct acpi_video_enumerated_device { | |
118 | union { | |
119 | u32 int_val; | |
4be44fcd | 120 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
121 | } value; |
122 | struct acpi_video_device *bind_info; | |
123 | }; | |
124 | ||
125 | struct acpi_video_bus { | |
e6afa0de | 126 | struct acpi_device *device; |
4be44fcd | 127 | u8 dos_setting; |
1da177e4 | 128 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
129 | u8 attached_count; |
130 | struct acpi_video_bus_cap cap; | |
1da177e4 | 131 | struct acpi_video_bus_flags flags; |
4be44fcd LB |
132 | struct semaphore sem; |
133 | struct list_head video_device_list; | |
134 | struct proc_dir_entry *dir; | |
1da177e4 LT |
135 | }; |
136 | ||
137 | struct acpi_video_device_flags { | |
4be44fcd LB |
138 | u8 crt:1; |
139 | u8 lcd:1; | |
140 | u8 tvout:1; | |
82cae999 | 141 | u8 dvi:1; |
4be44fcd LB |
142 | u8 bios:1; |
143 | u8 unknown:1; | |
82cae999 | 144 | u8 reserved:2; |
1da177e4 LT |
145 | }; |
146 | ||
147 | struct acpi_video_device_cap { | |
4be44fcd LB |
148 | u8 _ADR:1; /*Return the unique ID */ |
149 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
150 | u8 _BCM:1; /*Set the brightness level */ | |
2f3d000a | 151 | u8 _BQC:1; /* Get current brightness level */ |
4be44fcd LB |
152 | u8 _DDC:1; /*Return the EDID for this device */ |
153 | u8 _DCS:1; /*Return status of output device */ | |
154 | u8 _DGS:1; /*Query graphics state */ | |
155 | u8 _DSS:1; /*Device state set */ | |
1da177e4 LT |
156 | }; |
157 | ||
158 | struct acpi_video_device_brightness { | |
4be44fcd LB |
159 | int curr; |
160 | int count; | |
161 | int *levels; | |
1da177e4 LT |
162 | }; |
163 | ||
164 | struct acpi_video_device { | |
4be44fcd LB |
165 | unsigned long device_id; |
166 | struct acpi_video_device_flags flags; | |
167 | struct acpi_video_device_cap cap; | |
168 | struct list_head entry; | |
169 | struct acpi_video_bus *video; | |
170 | struct acpi_device *dev; | |
1da177e4 | 171 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 172 | struct backlight_device *backlight; |
23b0f015 | 173 | struct output_device *output_dev; |
1da177e4 LT |
174 | }; |
175 | ||
1da177e4 LT |
176 | /* bus */ |
177 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
178 | static struct file_operations acpi_video_bus_info_fops = { | |
4be44fcd LB |
179 | .open = acpi_video_bus_info_open_fs, |
180 | .read = seq_read, | |
181 | .llseek = seq_lseek, | |
182 | .release = single_release, | |
1da177e4 LT |
183 | }; |
184 | ||
185 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
186 | static struct file_operations acpi_video_bus_ROM_fops = { | |
4be44fcd LB |
187 | .open = acpi_video_bus_ROM_open_fs, |
188 | .read = seq_read, | |
189 | .llseek = seq_lseek, | |
190 | .release = single_release, | |
1da177e4 LT |
191 | }; |
192 | ||
4be44fcd LB |
193 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
194 | struct file *file); | |
1da177e4 | 195 | static struct file_operations acpi_video_bus_POST_info_fops = { |
4be44fcd LB |
196 | .open = acpi_video_bus_POST_info_open_fs, |
197 | .read = seq_read, | |
198 | .llseek = seq_lseek, | |
199 | .release = single_release, | |
1da177e4 LT |
200 | }; |
201 | ||
202 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
203 | static struct file_operations acpi_video_bus_POST_fops = { | |
4be44fcd LB |
204 | .open = acpi_video_bus_POST_open_fs, |
205 | .read = seq_read, | |
206 | .llseek = seq_lseek, | |
207 | .release = single_release, | |
1da177e4 LT |
208 | }; |
209 | ||
1da177e4 LT |
210 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
211 | static struct file_operations acpi_video_bus_DOS_fops = { | |
4be44fcd LB |
212 | .open = acpi_video_bus_DOS_open_fs, |
213 | .read = seq_read, | |
214 | .llseek = seq_lseek, | |
215 | .release = single_release, | |
1da177e4 LT |
216 | }; |
217 | ||
218 | /* device */ | |
4be44fcd LB |
219 | static int acpi_video_device_info_open_fs(struct inode *inode, |
220 | struct file *file); | |
1da177e4 | 221 | static struct file_operations acpi_video_device_info_fops = { |
4be44fcd LB |
222 | .open = acpi_video_device_info_open_fs, |
223 | .read = seq_read, | |
224 | .llseek = seq_lseek, | |
225 | .release = single_release, | |
1da177e4 LT |
226 | }; |
227 | ||
4be44fcd LB |
228 | static int acpi_video_device_state_open_fs(struct inode *inode, |
229 | struct file *file); | |
1da177e4 | 230 | static struct file_operations acpi_video_device_state_fops = { |
4be44fcd LB |
231 | .open = acpi_video_device_state_open_fs, |
232 | .read = seq_read, | |
233 | .llseek = seq_lseek, | |
234 | .release = single_release, | |
1da177e4 LT |
235 | }; |
236 | ||
4be44fcd LB |
237 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
238 | struct file *file); | |
1da177e4 | 239 | static struct file_operations acpi_video_device_brightness_fops = { |
4be44fcd LB |
240 | .open = acpi_video_device_brightness_open_fs, |
241 | .read = seq_read, | |
242 | .llseek = seq_lseek, | |
243 | .release = single_release, | |
1da177e4 LT |
244 | }; |
245 | ||
4be44fcd LB |
246 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
247 | struct file *file); | |
1da177e4 | 248 | static struct file_operations acpi_video_device_EDID_fops = { |
4be44fcd LB |
249 | .open = acpi_video_device_EDID_open_fs, |
250 | .read = seq_read, | |
251 | .llseek = seq_lseek, | |
252 | .release = single_release, | |
1da177e4 LT |
253 | }; |
254 | ||
4be44fcd | 255 | static char device_decode[][30] = { |
1da177e4 LT |
256 | "motherboard VGA device", |
257 | "PCI VGA device", | |
258 | "AGP VGA device", | |
259 | "UNKNOWN", | |
260 | }; | |
261 | ||
4be44fcd LB |
262 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
263 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
264 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
265 | struct acpi_video_device *device); | |
1da177e4 | 266 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
4be44fcd | 267 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event); |
2f3d000a YL |
268 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
269 | int level); | |
270 | static int acpi_video_device_lcd_get_level_current( | |
271 | struct acpi_video_device *device, | |
272 | unsigned long *level); | |
4be44fcd LB |
273 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
274 | u32 level_current, u32 event); | |
275 | static void acpi_video_switch_brightness(struct acpi_video_device *device, | |
276 | int event); | |
23b0f015 LY |
277 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
278 | unsigned long *state); | |
279 | static int acpi_video_output_get(struct output_device *od); | |
280 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 281 | |
2f3d000a YL |
282 | /*backlight device sysfs support*/ |
283 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
284 | { | |
285 | unsigned long cur_level; | |
286 | struct acpi_video_device *vd = | |
655bfd7a | 287 | (struct acpi_video_device *)bl_get_data(bd); |
2f3d000a YL |
288 | acpi_video_device_lcd_get_level_current(vd, &cur_level); |
289 | return (int) cur_level; | |
290 | } | |
291 | ||
292 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
293 | { | |
599a52d1 | 294 | int request_level = bd->props.brightness; |
2f3d000a | 295 | struct acpi_video_device *vd = |
655bfd7a | 296 | (struct acpi_video_device *)bl_get_data(bd); |
2f3d000a YL |
297 | acpi_video_device_lcd_set_level(vd, request_level); |
298 | return 0; | |
299 | } | |
300 | ||
599a52d1 RP |
301 | static struct backlight_ops acpi_backlight_ops = { |
302 | .get_brightness = acpi_video_get_brightness, | |
303 | .update_status = acpi_video_set_brightness, | |
304 | }; | |
305 | ||
23b0f015 LY |
306 | /*video output device sysfs support*/ |
307 | static int acpi_video_output_get(struct output_device *od) | |
308 | { | |
309 | unsigned long state; | |
310 | struct acpi_video_device *vd = | |
311 | (struct acpi_video_device *)class_get_devdata(&od->class_dev); | |
312 | acpi_video_device_get_state(vd, &state); | |
313 | return (int)state; | |
314 | } | |
315 | ||
316 | static int acpi_video_output_set(struct output_device *od) | |
317 | { | |
318 | unsigned long state = od->request_state; | |
319 | struct acpi_video_device *vd= | |
320 | (struct acpi_video_device *)class_get_devdata(&od->class_dev); | |
321 | return acpi_video_device_set_state(vd, state); | |
322 | } | |
323 | ||
324 | static struct output_properties acpi_output_properties = { | |
325 | .set_state = acpi_video_output_set, | |
326 | .get_status = acpi_video_output_get, | |
327 | }; | |
1da177e4 LT |
328 | /* -------------------------------------------------------------------------- |
329 | Video Management | |
330 | -------------------------------------------------------------------------- */ | |
331 | ||
332 | /* device */ | |
333 | ||
334 | static int | |
4be44fcd | 335 | acpi_video_device_query(struct acpi_video_device *device, unsigned long *state) |
1da177e4 | 336 | { |
4be44fcd | 337 | int status; |
90130268 PM |
338 | |
339 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 340 | |
d550d98d | 341 | return status; |
1da177e4 LT |
342 | } |
343 | ||
344 | static int | |
4be44fcd LB |
345 | acpi_video_device_get_state(struct acpi_video_device *device, |
346 | unsigned long *state) | |
1da177e4 | 347 | { |
4be44fcd | 348 | int status; |
1da177e4 | 349 | |
90130268 | 350 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 351 | |
d550d98d | 352 | return status; |
1da177e4 LT |
353 | } |
354 | ||
355 | static int | |
4be44fcd | 356 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 357 | { |
4be44fcd LB |
358 | int status; |
359 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
360 | struct acpi_object_list args = { 1, &arg0 }; | |
824b558b | 361 | unsigned long ret; |
1da177e4 | 362 | |
1da177e4 LT |
363 | |
364 | arg0.integer.value = state; | |
90130268 | 365 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 366 | |
d550d98d | 367 | return status; |
1da177e4 LT |
368 | } |
369 | ||
370 | static int | |
4be44fcd LB |
371 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
372 | union acpi_object **levels) | |
1da177e4 | 373 | { |
4be44fcd LB |
374 | int status; |
375 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
376 | union acpi_object *obj; | |
1da177e4 | 377 | |
1da177e4 LT |
378 | |
379 | *levels = NULL; | |
380 | ||
90130268 | 381 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 382 | if (!ACPI_SUCCESS(status)) |
d550d98d | 383 | return status; |
4be44fcd | 384 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 385 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 386 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
387 | status = -EFAULT; |
388 | goto err; | |
389 | } | |
390 | ||
391 | *levels = obj; | |
392 | ||
d550d98d | 393 | return 0; |
1da177e4 | 394 | |
4be44fcd | 395 | err: |
6044ec88 | 396 | kfree(buffer.pointer); |
1da177e4 | 397 | |
d550d98d | 398 | return status; |
1da177e4 LT |
399 | } |
400 | ||
401 | static int | |
4be44fcd | 402 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 403 | { |
4be44fcd LB |
404 | int status; |
405 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
406 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 407 | |
1da177e4 LT |
408 | |
409 | arg0.integer.value = level; | |
90130268 | 410 | status = acpi_evaluate_object(device->dev->handle, "_BCM", &args, NULL); |
1da177e4 LT |
411 | |
412 | printk(KERN_DEBUG "set_level status: %x\n", status); | |
d550d98d | 413 | return status; |
1da177e4 LT |
414 | } |
415 | ||
416 | static int | |
4be44fcd LB |
417 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
418 | unsigned long *level) | |
1da177e4 | 419 | { |
4be44fcd | 420 | int status; |
1da177e4 | 421 | |
90130268 | 422 | status = acpi_evaluate_integer(device->dev->handle, "_BQC", NULL, level); |
1da177e4 | 423 | |
d550d98d | 424 | return status; |
1da177e4 LT |
425 | } |
426 | ||
427 | static int | |
4be44fcd LB |
428 | acpi_video_device_EDID(struct acpi_video_device *device, |
429 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 430 | { |
4be44fcd LB |
431 | int status; |
432 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
433 | union acpi_object *obj; | |
434 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
435 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 436 | |
1da177e4 LT |
437 | |
438 | *edid = NULL; | |
439 | ||
440 | if (!device) | |
d550d98d | 441 | return -ENODEV; |
1da177e4 LT |
442 | if (length == 128) |
443 | arg0.integer.value = 1; | |
444 | else if (length == 256) | |
445 | arg0.integer.value = 2; | |
446 | else | |
d550d98d | 447 | return -EINVAL; |
1da177e4 | 448 | |
90130268 | 449 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 450 | if (ACPI_FAILURE(status)) |
d550d98d | 451 | return -ENODEV; |
1da177e4 | 452 | |
50dd0969 | 453 | obj = buffer.pointer; |
1da177e4 LT |
454 | |
455 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
456 | *edid = obj; | |
457 | else { | |
6468463a | 458 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
459 | status = -EFAULT; |
460 | kfree(obj); | |
461 | } | |
462 | ||
d550d98d | 463 | return status; |
1da177e4 LT |
464 | } |
465 | ||
1da177e4 LT |
466 | /* bus */ |
467 | ||
468 | static int | |
4be44fcd | 469 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 470 | { |
4be44fcd LB |
471 | int status; |
472 | unsigned long tmp; | |
473 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
474 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 475 | |
1da177e4 LT |
476 | |
477 | arg0.integer.value = option; | |
478 | ||
90130268 | 479 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 480 | if (ACPI_SUCCESS(status)) |
4be44fcd | 481 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 482 | |
d550d98d | 483 | return status; |
1da177e4 LT |
484 | } |
485 | ||
486 | static int | |
4be44fcd | 487 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id) |
1da177e4 LT |
488 | { |
489 | int status; | |
490 | ||
90130268 | 491 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 492 | |
d550d98d | 493 | return status; |
1da177e4 LT |
494 | } |
495 | ||
496 | static int | |
4be44fcd LB |
497 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
498 | unsigned long *options) | |
1da177e4 | 499 | { |
4be44fcd | 500 | int status; |
1da177e4 | 501 | |
90130268 | 502 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
503 | *options &= 3; |
504 | ||
d550d98d | 505 | return status; |
1da177e4 LT |
506 | } |
507 | ||
508 | /* | |
509 | * Arg: | |
510 | * video : video bus device pointer | |
511 | * bios_flag : | |
512 | * 0. The system BIOS should NOT automatically switch(toggle) | |
513 | * the active display output. | |
514 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 515 | * active display output. No switch event. |
1da177e4 LT |
516 | * 2. The _DGS value should be locked. |
517 | * 3. The system BIOS should not automatically switch (toggle) the | |
518 | * active display output, but instead generate the display switch | |
519 | * event notify code. | |
520 | * lcd_flag : | |
521 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 522 | * of the LCD when the power changes from AC to DC |
1da177e4 | 523 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 524 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
525 | * Return Value: |
526 | * -1 wrong arg. | |
527 | */ | |
528 | ||
529 | static int | |
4be44fcd | 530 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 531 | { |
4be44fcd LB |
532 | acpi_integer status = 0; |
533 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
534 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 535 | |
1da177e4 | 536 | |
4be44fcd | 537 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
538 | status = -1; |
539 | goto Failed; | |
540 | } | |
541 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
542 | video->dos_setting = arg0.integer.value; | |
90130268 | 543 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 544 | |
4be44fcd | 545 | Failed: |
d550d98d | 546 | return status; |
1da177e4 LT |
547 | } |
548 | ||
549 | /* | |
550 | * Arg: | |
551 | * device : video output device (LCD, CRT, ..) | |
552 | * | |
553 | * Return Value: | |
554 | * None | |
555 | * | |
98fb8fe1 | 556 | * Find out all required AML methods defined under the output |
1da177e4 LT |
557 | * device. |
558 | */ | |
559 | ||
4be44fcd | 560 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 561 | { |
1da177e4 LT |
562 | acpi_handle h_dummy1; |
563 | int i; | |
2f3d000a | 564 | u32 max_level = 0; |
1da177e4 LT |
565 | union acpi_object *obj = NULL; |
566 | struct acpi_video_device_brightness *br = NULL; | |
567 | ||
1da177e4 | 568 | |
4be44fcd | 569 | memset(&device->cap, 0, 4); |
1da177e4 | 570 | |
90130268 | 571 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
572 | device->cap._ADR = 1; |
573 | } | |
90130268 | 574 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 575 | device->cap._BCL = 1; |
1da177e4 | 576 | } |
90130268 | 577 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 578 | device->cap._BCM = 1; |
1da177e4 | 579 | } |
2f3d000a YL |
580 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
581 | device->cap._BQC = 1; | |
90130268 | 582 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 583 | device->cap._DDC = 1; |
1da177e4 | 584 | } |
90130268 | 585 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
586 | device->cap._DCS = 1; |
587 | } | |
90130268 | 588 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
589 | device->cap._DGS = 1; |
590 | } | |
90130268 | 591 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
592 | device->cap._DSS = 1; |
593 | } | |
594 | ||
f70ac0e9 DK |
595 | if (ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { |
596 | ||
597 | if (obj->package.count >= 2) { | |
598 | int count = 0; | |
599 | union acpi_object *o; | |
600 | ||
601 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
602 | if (!br) { | |
603 | printk(KERN_ERR "can't allocate memory\n"); | |
1da177e4 | 604 | } else { |
f70ac0e9 DK |
605 | br->levels = kmalloc(obj->package.count * |
606 | sizeof *(br->levels), GFP_KERNEL); | |
607 | if (!br->levels) | |
608 | goto out; | |
609 | ||
610 | for (i = 0; i < obj->package.count; i++) { | |
611 | o = (union acpi_object *)&obj->package. | |
612 | elements[i]; | |
613 | if (o->type != ACPI_TYPE_INTEGER) { | |
614 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
615 | continue; | |
616 | } | |
617 | br->levels[count] = (u32) o->integer.value; | |
618 | ||
619 | if (br->levels[count] > max_level) | |
620 | max_level = br->levels[count]; | |
621 | count++; | |
622 | } | |
623 | out: | |
624 | if (count < 2) { | |
625 | kfree(br->levels); | |
626 | kfree(br); | |
627 | } else { | |
628 | br->count = count; | |
629 | device->brightness = br; | |
630 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
631 | "found %d brightness levels\n", | |
632 | count)); | |
633 | } | |
1da177e4 LT |
634 | } |
635 | } | |
f70ac0e9 DK |
636 | |
637 | } else { | |
638 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available LCD brightness level\n")); | |
1da177e4 LT |
639 | } |
640 | ||
d1dd0c23 | 641 | kfree(obj); |
1da177e4 | 642 | |
f70ac0e9 | 643 | if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){ |
2f3d000a YL |
644 | unsigned long tmp; |
645 | static int count = 0; | |
646 | char *name; | |
2f3d000a YL |
647 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
648 | if (!name) | |
649 | return; | |
650 | ||
2f3d000a | 651 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 652 | acpi_video_device_lcd_get_level_current(device, &tmp); |
2f3d000a | 653 | device->backlight = backlight_device_register(name, |
599a52d1 RP |
654 | NULL, device, &acpi_backlight_ops); |
655 | device->backlight->props.max_brightness = max_level; | |
656 | device->backlight->props.brightness = (int)tmp; | |
657 | backlight_update_status(device->backlight); | |
658 | ||
2f3d000a YL |
659 | kfree(name); |
660 | } | |
23b0f015 LY |
661 | if (device->cap._DCS && device->cap._DSS){ |
662 | static int count = 0; | |
663 | char *name; | |
664 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
665 | if (!name) | |
666 | return; | |
667 | sprintf(name, "acpi_video%d", count++); | |
668 | device->output_dev = video_output_register(name, | |
669 | NULL, device, &acpi_output_properties); | |
670 | kfree(name); | |
671 | } | |
d550d98d | 672 | return; |
1da177e4 LT |
673 | } |
674 | ||
675 | /* | |
676 | * Arg: | |
677 | * device : video output device (VGA) | |
678 | * | |
679 | * Return Value: | |
680 | * None | |
681 | * | |
98fb8fe1 | 682 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
683 | */ |
684 | ||
4be44fcd | 685 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 686 | { |
4be44fcd | 687 | acpi_handle h_dummy1; |
1da177e4 | 688 | |
4be44fcd | 689 | memset(&video->cap, 0, 4); |
90130268 | 690 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
691 | video->cap._DOS = 1; |
692 | } | |
90130268 | 693 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
694 | video->cap._DOD = 1; |
695 | } | |
90130268 | 696 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
697 | video->cap._ROM = 1; |
698 | } | |
90130268 | 699 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
700 | video->cap._GPD = 1; |
701 | } | |
90130268 | 702 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
703 | video->cap._SPD = 1; |
704 | } | |
90130268 | 705 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
706 | video->cap._VPO = 1; |
707 | } | |
708 | } | |
709 | ||
710 | /* | |
711 | * Check whether the video bus device has required AML method to | |
712 | * support the desired features | |
713 | */ | |
714 | ||
4be44fcd | 715 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 716 | { |
4be44fcd | 717 | acpi_status status = -ENOENT; |
1da177e4 | 718 | |
1da177e4 LT |
719 | |
720 | if (!video) | |
d550d98d | 721 | return -EINVAL; |
1da177e4 LT |
722 | |
723 | /* Since there is no HID, CID and so on for VGA driver, we have | |
724 | * to check well known required nodes. | |
725 | */ | |
726 | ||
98fb8fe1 | 727 | /* Does this device support video switching? */ |
4be44fcd | 728 | if (video->cap._DOS) { |
1da177e4 LT |
729 | video->flags.multihead = 1; |
730 | status = 0; | |
731 | } | |
732 | ||
98fb8fe1 | 733 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 734 | if (video->cap._ROM) { |
1da177e4 LT |
735 | video->flags.rom = 1; |
736 | status = 0; | |
737 | } | |
738 | ||
98fb8fe1 | 739 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 740 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
741 | video->flags.post = 1; |
742 | status = 0; | |
743 | } | |
744 | ||
d550d98d | 745 | return status; |
1da177e4 LT |
746 | } |
747 | ||
748 | /* -------------------------------------------------------------------------- | |
749 | FS Interface (/proc) | |
750 | -------------------------------------------------------------------------- */ | |
751 | ||
4be44fcd | 752 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
753 | |
754 | /* video devices */ | |
755 | ||
4be44fcd | 756 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 757 | { |
50dd0969 | 758 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 759 | |
1da177e4 LT |
760 | |
761 | if (!dev) | |
762 | goto end; | |
763 | ||
764 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
765 | seq_printf(seq, "type: "); | |
766 | if (dev->flags.crt) | |
767 | seq_printf(seq, "CRT\n"); | |
768 | else if (dev->flags.lcd) | |
769 | seq_printf(seq, "LCD\n"); | |
770 | else if (dev->flags.tvout) | |
771 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
772 | else if (dev->flags.dvi) |
773 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
774 | else |
775 | seq_printf(seq, "UNKNOWN\n"); | |
776 | ||
4be44fcd | 777 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 778 | |
4be44fcd | 779 | end: |
d550d98d | 780 | return 0; |
1da177e4 LT |
781 | } |
782 | ||
783 | static int | |
4be44fcd | 784 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
785 | { |
786 | return single_open(file, acpi_video_device_info_seq_show, | |
787 | PDE(inode)->data); | |
788 | } | |
789 | ||
4be44fcd | 790 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 791 | { |
4be44fcd | 792 | int status; |
50dd0969 | 793 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 794 | unsigned long state; |
1da177e4 | 795 | |
1da177e4 LT |
796 | |
797 | if (!dev) | |
798 | goto end; | |
799 | ||
800 | status = acpi_video_device_get_state(dev, &state); | |
801 | seq_printf(seq, "state: "); | |
802 | if (ACPI_SUCCESS(status)) | |
803 | seq_printf(seq, "0x%02lx\n", state); | |
804 | else | |
805 | seq_printf(seq, "<not supported>\n"); | |
806 | ||
807 | status = acpi_video_device_query(dev, &state); | |
808 | seq_printf(seq, "query: "); | |
809 | if (ACPI_SUCCESS(status)) | |
810 | seq_printf(seq, "0x%02lx\n", state); | |
811 | else | |
812 | seq_printf(seq, "<not supported>\n"); | |
813 | ||
4be44fcd | 814 | end: |
d550d98d | 815 | return 0; |
1da177e4 LT |
816 | } |
817 | ||
818 | static int | |
4be44fcd | 819 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
820 | { |
821 | return single_open(file, acpi_video_device_state_seq_show, | |
822 | PDE(inode)->data); | |
823 | } | |
824 | ||
825 | static ssize_t | |
4be44fcd LB |
826 | acpi_video_device_write_state(struct file *file, |
827 | const char __user * buffer, | |
828 | size_t count, loff_t * data) | |
1da177e4 | 829 | { |
4be44fcd | 830 | int status; |
50dd0969 JE |
831 | struct seq_file *m = file->private_data; |
832 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
833 | char str[12] = { 0 }; |
834 | u32 state = 0; | |
1da177e4 | 835 | |
1da177e4 LT |
836 | |
837 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 838 | return -EINVAL; |
1da177e4 LT |
839 | |
840 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 841 | return -EFAULT; |
1da177e4 LT |
842 | |
843 | str[count] = 0; | |
844 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 845 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
846 | |
847 | status = acpi_video_device_set_state(dev, state); | |
848 | ||
849 | if (status) | |
d550d98d | 850 | return -EFAULT; |
1da177e4 | 851 | |
d550d98d | 852 | return count; |
1da177e4 LT |
853 | } |
854 | ||
855 | static int | |
4be44fcd | 856 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 857 | { |
50dd0969 | 858 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 859 | int i; |
1da177e4 | 860 | |
1da177e4 LT |
861 | |
862 | if (!dev || !dev->brightness) { | |
863 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 864 | return 0; |
1da177e4 LT |
865 | } |
866 | ||
867 | seq_printf(seq, "levels: "); | |
868 | for (i = 0; i < dev->brightness->count; i++) | |
869 | seq_printf(seq, " %d", dev->brightness->levels[i]); | |
870 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
871 | ||
d550d98d | 872 | return 0; |
1da177e4 LT |
873 | } |
874 | ||
875 | static int | |
4be44fcd | 876 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
877 | { |
878 | return single_open(file, acpi_video_device_brightness_seq_show, | |
879 | PDE(inode)->data); | |
880 | } | |
881 | ||
882 | static ssize_t | |
4be44fcd LB |
883 | acpi_video_device_write_brightness(struct file *file, |
884 | const char __user * buffer, | |
885 | size_t count, loff_t * data) | |
1da177e4 | 886 | { |
50dd0969 JE |
887 | struct seq_file *m = file->private_data; |
888 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
889 | char str[4] = { 0 }; |
890 | unsigned int level = 0; | |
891 | int i; | |
1da177e4 | 892 | |
1da177e4 | 893 | |
59d399d3 | 894 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 895 | return -EINVAL; |
1da177e4 LT |
896 | |
897 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 898 | return -EFAULT; |
1da177e4 LT |
899 | |
900 | str[count] = 0; | |
901 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 902 | |
1da177e4 | 903 | if (level > 100) |
d550d98d | 904 | return -EFAULT; |
1da177e4 | 905 | |
98fb8fe1 | 906 | /* validate through the list of available levels */ |
1da177e4 LT |
907 | for (i = 0; i < dev->brightness->count; i++) |
908 | if (level == dev->brightness->levels[i]) { | |
4be44fcd LB |
909 | if (ACPI_SUCCESS |
910 | (acpi_video_device_lcd_set_level(dev, level))) | |
1da177e4 LT |
911 | dev->brightness->curr = level; |
912 | break; | |
913 | } | |
914 | ||
d550d98d | 915 | return count; |
1da177e4 LT |
916 | } |
917 | ||
4be44fcd | 918 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 919 | { |
50dd0969 | 920 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
921 | int status; |
922 | int i; | |
923 | union acpi_object *edid = NULL; | |
1da177e4 | 924 | |
1da177e4 LT |
925 | |
926 | if (!dev) | |
927 | goto out; | |
928 | ||
4be44fcd | 929 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 930 | if (ACPI_FAILURE(status)) { |
4be44fcd | 931 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
932 | } |
933 | ||
934 | if (ACPI_FAILURE(status)) { | |
935 | goto out; | |
936 | } | |
937 | ||
938 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
939 | for (i = 0; i < edid->buffer.length; i++) | |
940 | seq_putc(seq, edid->buffer.pointer[i]); | |
941 | } | |
942 | ||
4be44fcd | 943 | out: |
1da177e4 LT |
944 | if (!edid) |
945 | seq_printf(seq, "<not supported>\n"); | |
946 | else | |
947 | kfree(edid); | |
948 | ||
d550d98d | 949 | return 0; |
1da177e4 LT |
950 | } |
951 | ||
952 | static int | |
4be44fcd | 953 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
954 | { |
955 | return single_open(file, acpi_video_device_EDID_seq_show, | |
956 | PDE(inode)->data); | |
957 | } | |
958 | ||
4be44fcd | 959 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 960 | { |
4be44fcd | 961 | struct proc_dir_entry *entry = NULL; |
1da177e4 LT |
962 | struct acpi_video_device *vid_dev; |
963 | ||
1da177e4 LT |
964 | |
965 | if (!device) | |
d550d98d | 966 | return -ENODEV; |
1da177e4 | 967 | |
50dd0969 | 968 | vid_dev = acpi_driver_data(device); |
1da177e4 | 969 | if (!vid_dev) |
d550d98d | 970 | return -ENODEV; |
1da177e4 LT |
971 | |
972 | if (!acpi_device_dir(device)) { | |
973 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 974 | vid_dev->video->dir); |
1da177e4 | 975 | if (!acpi_device_dir(device)) |
d550d98d | 976 | return -ENODEV; |
1da177e4 LT |
977 | acpi_device_dir(device)->owner = THIS_MODULE; |
978 | } | |
979 | ||
980 | /* 'info' [R] */ | |
981 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
982 | if (!entry) | |
d550d98d | 983 | return -ENODEV; |
1da177e4 LT |
984 | else { |
985 | entry->proc_fops = &acpi_video_device_info_fops; | |
986 | entry->data = acpi_driver_data(device); | |
987 | entry->owner = THIS_MODULE; | |
988 | } | |
989 | ||
990 | /* 'state' [R/W] */ | |
4be44fcd LB |
991 | entry = |
992 | create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR, | |
993 | acpi_device_dir(device)); | |
1da177e4 | 994 | if (!entry) |
d550d98d | 995 | return -ENODEV; |
1da177e4 | 996 | else { |
d479e908 | 997 | acpi_video_device_state_fops.write = acpi_video_device_write_state; |
1da177e4 | 998 | entry->proc_fops = &acpi_video_device_state_fops; |
1da177e4 LT |
999 | entry->data = acpi_driver_data(device); |
1000 | entry->owner = THIS_MODULE; | |
1001 | } | |
1002 | ||
1003 | /* 'brightness' [R/W] */ | |
4be44fcd LB |
1004 | entry = |
1005 | create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR, | |
1006 | acpi_device_dir(device)); | |
1da177e4 | 1007 | if (!entry) |
d550d98d | 1008 | return -ENODEV; |
1da177e4 | 1009 | else { |
d479e908 | 1010 | acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness; |
1da177e4 | 1011 | entry->proc_fops = &acpi_video_device_brightness_fops; |
1da177e4 LT |
1012 | entry->data = acpi_driver_data(device); |
1013 | entry->owner = THIS_MODULE; | |
1014 | } | |
1015 | ||
1016 | /* 'EDID' [R] */ | |
1017 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); | |
1018 | if (!entry) | |
d550d98d | 1019 | return -ENODEV; |
1da177e4 LT |
1020 | else { |
1021 | entry->proc_fops = &acpi_video_device_EDID_fops; | |
1022 | entry->data = acpi_driver_data(device); | |
1023 | entry->owner = THIS_MODULE; | |
1024 | } | |
1025 | ||
d550d98d | 1026 | return 0; |
1da177e4 LT |
1027 | } |
1028 | ||
4be44fcd | 1029 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1030 | { |
1031 | struct acpi_video_device *vid_dev; | |
1da177e4 | 1032 | |
50dd0969 | 1033 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1034 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 1035 | return -ENODEV; |
1da177e4 LT |
1036 | |
1037 | if (acpi_device_dir(device)) { | |
1038 | remove_proc_entry("info", acpi_device_dir(device)); | |
1039 | remove_proc_entry("state", acpi_device_dir(device)); | |
1040 | remove_proc_entry("brightness", acpi_device_dir(device)); | |
1041 | remove_proc_entry("EDID", acpi_device_dir(device)); | |
4be44fcd | 1042 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1043 | acpi_device_dir(device) = NULL; |
1044 | } | |
1045 | ||
d550d98d | 1046 | return 0; |
1da177e4 LT |
1047 | } |
1048 | ||
1da177e4 | 1049 | /* video bus */ |
4be44fcd | 1050 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1051 | { |
50dd0969 | 1052 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1053 | |
1da177e4 LT |
1054 | |
1055 | if (!video) | |
1056 | goto end; | |
1057 | ||
1058 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1059 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1060 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1061 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1062 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1063 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1064 | |
4be44fcd | 1065 | end: |
d550d98d | 1066 | return 0; |
1da177e4 LT |
1067 | } |
1068 | ||
4be44fcd | 1069 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1070 | { |
4be44fcd LB |
1071 | return single_open(file, acpi_video_bus_info_seq_show, |
1072 | PDE(inode)->data); | |
1da177e4 LT |
1073 | } |
1074 | ||
4be44fcd | 1075 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1076 | { |
50dd0969 | 1077 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1078 | |
1da177e4 LT |
1079 | |
1080 | if (!video) | |
1081 | goto end; | |
1082 | ||
1083 | printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__); | |
1084 | seq_printf(seq, "<TODO>\n"); | |
1085 | ||
4be44fcd | 1086 | end: |
d550d98d | 1087 | return 0; |
1da177e4 LT |
1088 | } |
1089 | ||
4be44fcd | 1090 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1091 | { |
1092 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1093 | } | |
1094 | ||
4be44fcd | 1095 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1096 | { |
50dd0969 | 1097 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1098 | unsigned long options; |
1099 | int status; | |
1da177e4 | 1100 | |
1da177e4 LT |
1101 | |
1102 | if (!video) | |
1103 | goto end; | |
1104 | ||
1105 | status = acpi_video_bus_POST_options(video, &options); | |
1106 | if (ACPI_SUCCESS(status)) { | |
1107 | if (!(options & 1)) { | |
4be44fcd LB |
1108 | printk(KERN_WARNING PREFIX |
1109 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1110 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1111 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 LT |
1112 | } |
1113 | printk("%lx\n", options); | |
98fb8fe1 | 1114 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1115 | if (options & 2) |
1116 | seq_printf(seq, " <PCI video>"); | |
1117 | if (options & 4) | |
1118 | seq_printf(seq, " <AGP video>"); | |
1119 | seq_putc(seq, '\n'); | |
1120 | } else | |
1121 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1122 | end: |
d550d98d | 1123 | return 0; |
1da177e4 LT |
1124 | } |
1125 | ||
1126 | static int | |
4be44fcd | 1127 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1128 | { |
4be44fcd LB |
1129 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1130 | PDE(inode)->data); | |
1da177e4 LT |
1131 | } |
1132 | ||
4be44fcd | 1133 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1134 | { |
50dd0969 | 1135 | struct acpi_video_bus *video = seq->private; |
4be44fcd LB |
1136 | int status; |
1137 | unsigned long id; | |
1da177e4 | 1138 | |
1da177e4 LT |
1139 | |
1140 | if (!video) | |
1141 | goto end; | |
1142 | ||
4be44fcd | 1143 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1144 | if (!ACPI_SUCCESS(status)) { |
1145 | seq_printf(seq, "<not supported>\n"); | |
1146 | goto end; | |
1147 | } | |
98fb8fe1 | 1148 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1149 | |
4be44fcd | 1150 | end: |
d550d98d | 1151 | return 0; |
1da177e4 LT |
1152 | } |
1153 | ||
4be44fcd | 1154 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1155 | { |
50dd0969 | 1156 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1157 | |
1da177e4 | 1158 | |
4be44fcd | 1159 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1160 | |
d550d98d | 1161 | return 0; |
1da177e4 LT |
1162 | } |
1163 | ||
4be44fcd | 1164 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1165 | { |
4be44fcd LB |
1166 | return single_open(file, acpi_video_bus_POST_seq_show, |
1167 | PDE(inode)->data); | |
1da177e4 LT |
1168 | } |
1169 | ||
4be44fcd | 1170 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1171 | { |
1172 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1173 | } | |
1174 | ||
1175 | static ssize_t | |
4be44fcd LB |
1176 | acpi_video_bus_write_POST(struct file *file, |
1177 | const char __user * buffer, | |
1178 | size_t count, loff_t * data) | |
1da177e4 | 1179 | { |
4be44fcd | 1180 | int status; |
50dd0969 JE |
1181 | struct seq_file *m = file->private_data; |
1182 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1183 | char str[12] = { 0 }; |
1184 | unsigned long opt, options; | |
1da177e4 | 1185 | |
1da177e4 | 1186 | |
1da177e4 | 1187 | if (!video || count + 1 > sizeof str) |
d550d98d | 1188 | return -EINVAL; |
1da177e4 LT |
1189 | |
1190 | status = acpi_video_bus_POST_options(video, &options); | |
1191 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1192 | return -EINVAL; |
1da177e4 LT |
1193 | |
1194 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1195 | return -EFAULT; |
1da177e4 LT |
1196 | |
1197 | str[count] = 0; | |
1198 | opt = strtoul(str, NULL, 0); | |
1199 | if (opt > 3) | |
d550d98d | 1200 | return -EFAULT; |
1da177e4 | 1201 | |
98fb8fe1 | 1202 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1203 | options |= 1; |
1204 | ||
1205 | if (options & (1ul << opt)) { | |
4be44fcd | 1206 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1207 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1208 | return -EFAULT; |
1da177e4 LT |
1209 | |
1210 | } | |
1211 | ||
d550d98d | 1212 | return count; |
1da177e4 LT |
1213 | } |
1214 | ||
1215 | static ssize_t | |
4be44fcd LB |
1216 | acpi_video_bus_write_DOS(struct file *file, |
1217 | const char __user * buffer, | |
1218 | size_t count, loff_t * data) | |
1da177e4 | 1219 | { |
4be44fcd | 1220 | int status; |
50dd0969 JE |
1221 | struct seq_file *m = file->private_data; |
1222 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1223 | char str[12] = { 0 }; |
1224 | unsigned long opt; | |
1da177e4 | 1225 | |
1da177e4 | 1226 | |
1da177e4 | 1227 | if (!video || count + 1 > sizeof str) |
d550d98d | 1228 | return -EINVAL; |
1da177e4 LT |
1229 | |
1230 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1231 | return -EFAULT; |
1da177e4 LT |
1232 | |
1233 | str[count] = 0; | |
1234 | opt = strtoul(str, NULL, 0); | |
1235 | if (opt > 7) | |
d550d98d | 1236 | return -EFAULT; |
1da177e4 | 1237 | |
4be44fcd | 1238 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1239 | |
1240 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1241 | return -EFAULT; |
1da177e4 | 1242 | |
d550d98d | 1243 | return count; |
1da177e4 LT |
1244 | } |
1245 | ||
4be44fcd | 1246 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1247 | { |
4be44fcd LB |
1248 | struct proc_dir_entry *entry = NULL; |
1249 | struct acpi_video_bus *video; | |
1da177e4 | 1250 | |
1da177e4 | 1251 | |
50dd0969 | 1252 | video = acpi_driver_data(device); |
1da177e4 LT |
1253 | |
1254 | if (!acpi_device_dir(device)) { | |
1255 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1256 | acpi_video_dir); |
1da177e4 | 1257 | if (!acpi_device_dir(device)) |
d550d98d | 1258 | return -ENODEV; |
1da177e4 LT |
1259 | video->dir = acpi_device_dir(device); |
1260 | acpi_device_dir(device)->owner = THIS_MODULE; | |
1261 | } | |
1262 | ||
1263 | /* 'info' [R] */ | |
1264 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); | |
1265 | if (!entry) | |
d550d98d | 1266 | return -ENODEV; |
1da177e4 LT |
1267 | else { |
1268 | entry->proc_fops = &acpi_video_bus_info_fops; | |
1269 | entry->data = acpi_driver_data(device); | |
1270 | entry->owner = THIS_MODULE; | |
1271 | } | |
1272 | ||
1273 | /* 'ROM' [R] */ | |
1274 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); | |
1275 | if (!entry) | |
d550d98d | 1276 | return -ENODEV; |
1da177e4 LT |
1277 | else { |
1278 | entry->proc_fops = &acpi_video_bus_ROM_fops; | |
1279 | entry->data = acpi_driver_data(device); | |
1280 | entry->owner = THIS_MODULE; | |
1281 | } | |
1282 | ||
1283 | /* 'POST_info' [R] */ | |
4be44fcd LB |
1284 | entry = |
1285 | create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); | |
1da177e4 | 1286 | if (!entry) |
d550d98d | 1287 | return -ENODEV; |
1da177e4 LT |
1288 | else { |
1289 | entry->proc_fops = &acpi_video_bus_POST_info_fops; | |
1290 | entry->data = acpi_driver_data(device); | |
1291 | entry->owner = THIS_MODULE; | |
1292 | } | |
1293 | ||
1294 | /* 'POST' [R/W] */ | |
4be44fcd LB |
1295 | entry = |
1296 | create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR, | |
1297 | acpi_device_dir(device)); | |
1da177e4 | 1298 | if (!entry) |
d550d98d | 1299 | return -ENODEV; |
1da177e4 | 1300 | else { |
d479e908 | 1301 | acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST; |
1da177e4 | 1302 | entry->proc_fops = &acpi_video_bus_POST_fops; |
1da177e4 LT |
1303 | entry->data = acpi_driver_data(device); |
1304 | entry->owner = THIS_MODULE; | |
1305 | } | |
1306 | ||
1307 | /* 'DOS' [R/W] */ | |
4be44fcd LB |
1308 | entry = |
1309 | create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR, | |
1310 | acpi_device_dir(device)); | |
1da177e4 | 1311 | if (!entry) |
d550d98d | 1312 | return -ENODEV; |
1da177e4 | 1313 | else { |
d479e908 | 1314 | acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS; |
1da177e4 | 1315 | entry->proc_fops = &acpi_video_bus_DOS_fops; |
1da177e4 LT |
1316 | entry->data = acpi_driver_data(device); |
1317 | entry->owner = THIS_MODULE; | |
1318 | } | |
1319 | ||
d550d98d | 1320 | return 0; |
1da177e4 LT |
1321 | } |
1322 | ||
4be44fcd | 1323 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1324 | { |
4be44fcd | 1325 | struct acpi_video_bus *video; |
1da177e4 | 1326 | |
1da177e4 | 1327 | |
50dd0969 | 1328 | video = acpi_driver_data(device); |
1da177e4 LT |
1329 | |
1330 | if (acpi_device_dir(device)) { | |
1331 | remove_proc_entry("info", acpi_device_dir(device)); | |
1332 | remove_proc_entry("ROM", acpi_device_dir(device)); | |
1333 | remove_proc_entry("POST_info", acpi_device_dir(device)); | |
1334 | remove_proc_entry("POST", acpi_device_dir(device)); | |
1335 | remove_proc_entry("DOS", acpi_device_dir(device)); | |
4be44fcd | 1336 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1337 | acpi_device_dir(device) = NULL; |
1338 | } | |
1339 | ||
d550d98d | 1340 | return 0; |
1da177e4 LT |
1341 | } |
1342 | ||
1343 | /* -------------------------------------------------------------------------- | |
1344 | Driver Interface | |
1345 | -------------------------------------------------------------------------- */ | |
1346 | ||
1347 | /* device interface */ | |
82cae999 RZ |
1348 | static struct acpi_video_device_attrib* |
1349 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1350 | { | |
1351 | int count; | |
1352 | ||
1353 | for(count = 0; count < video->attached_count; count++) | |
1354 | if((video->attached_array[count].value.int_val & 0xffff) == device_id) | |
1355 | return &(video->attached_array[count].value.attrib); | |
1356 | return NULL; | |
1357 | } | |
1da177e4 LT |
1358 | |
1359 | static int | |
4be44fcd LB |
1360 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1361 | struct acpi_video_bus *video) | |
1da177e4 | 1362 | { |
4be44fcd | 1363 | unsigned long device_id; |
973bf491 | 1364 | int status; |
4be44fcd | 1365 | struct acpi_video_device *data; |
82cae999 | 1366 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1367 | |
1368 | if (!device || !video) | |
d550d98d | 1369 | return -EINVAL; |
1da177e4 | 1370 | |
4be44fcd LB |
1371 | status = |
1372 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1373 | if (ACPI_SUCCESS(status)) { |
1374 | ||
36bcbec7 | 1375 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1376 | if (!data) |
d550d98d | 1377 | return -ENOMEM; |
1da177e4 | 1378 | |
1da177e4 LT |
1379 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1380 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1381 | acpi_driver_data(device) = data; | |
1382 | ||
1383 | data->device_id = device_id; | |
1384 | data->video = video; | |
1385 | data->dev = device; | |
1386 | ||
82cae999 RZ |
1387 | attribute = acpi_video_get_device_attr(video, device_id); |
1388 | ||
1389 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1390 | switch (attribute->display_type) { | |
1391 | case ACPI_VIDEO_DISPLAY_CRT: | |
1392 | data->flags.crt = 1; | |
1393 | break; | |
1394 | case ACPI_VIDEO_DISPLAY_TV: | |
1395 | data->flags.tvout = 1; | |
1396 | break; | |
1397 | case ACPI_VIDEO_DISPLAY_DVI: | |
1398 | data->flags.dvi = 1; | |
1399 | break; | |
1400 | case ACPI_VIDEO_DISPLAY_LCD: | |
1401 | data->flags.lcd = 1; | |
1402 | break; | |
1403 | default: | |
1404 | data->flags.unknown = 1; | |
1405 | break; | |
1406 | } | |
1407 | if(attribute->bios_can_detect) | |
1408 | data->flags.bios = 1; | |
1409 | } else | |
1da177e4 | 1410 | data->flags.unknown = 1; |
4be44fcd | 1411 | |
1da177e4 LT |
1412 | acpi_video_device_bind(video, data); |
1413 | acpi_video_device_find_cap(data); | |
1414 | ||
90130268 | 1415 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1416 | ACPI_DEVICE_NOTIFY, |
1417 | acpi_video_device_notify, | |
1418 | data); | |
1da177e4 LT |
1419 | if (ACPI_FAILURE(status)) { |
1420 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1421 | "Error installing notify handler\n")); |
973bf491 YL |
1422 | if(data->brightness) |
1423 | kfree(data->brightness->levels); | |
1424 | kfree(data->brightness); | |
1425 | kfree(data); | |
1426 | return -ENODEV; | |
1da177e4 LT |
1427 | } |
1428 | ||
1429 | down(&video->sem); | |
1430 | list_add_tail(&data->entry, &video->video_device_list); | |
1431 | up(&video->sem); | |
1432 | ||
1433 | acpi_video_device_add_fs(device); | |
1434 | ||
d550d98d | 1435 | return 0; |
1da177e4 LT |
1436 | } |
1437 | ||
d550d98d | 1438 | return -ENOENT; |
1da177e4 LT |
1439 | } |
1440 | ||
1441 | /* | |
1442 | * Arg: | |
1443 | * video : video bus device | |
1444 | * | |
1445 | * Return: | |
1446 | * none | |
1447 | * | |
1448 | * Enumerate the video device list of the video bus, | |
1449 | * bind the ids with the corresponding video devices | |
1450 | * under the video bus. | |
4be44fcd | 1451 | */ |
1da177e4 | 1452 | |
4be44fcd | 1453 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1454 | { |
4be44fcd | 1455 | struct list_head *node, *next; |
1da177e4 | 1456 | list_for_each_safe(node, next, &video->video_device_list) { |
4be44fcd LB |
1457 | struct acpi_video_device *dev = |
1458 | container_of(node, struct acpi_video_device, entry); | |
1459 | acpi_video_device_bind(video, dev); | |
1da177e4 LT |
1460 | } |
1461 | } | |
1462 | ||
1463 | /* | |
1464 | * Arg: | |
1465 | * video : video bus device | |
1466 | * device : video output device under the video | |
1467 | * bus | |
1468 | * | |
1469 | * Return: | |
1470 | * none | |
1471 | * | |
1472 | * Bind the ids with the corresponding video devices | |
1473 | * under the video bus. | |
4be44fcd | 1474 | */ |
1da177e4 LT |
1475 | |
1476 | static void | |
4be44fcd LB |
1477 | acpi_video_device_bind(struct acpi_video_bus *video, |
1478 | struct acpi_video_device *device) | |
1da177e4 | 1479 | { |
4be44fcd | 1480 | int i; |
1da177e4 LT |
1481 | |
1482 | #define IDS_VAL(i) video->attached_array[i].value.int_val | |
1483 | #define IDS_BIND(i) video->attached_array[i].bind_info | |
4be44fcd LB |
1484 | |
1485 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && | |
1486 | i < video->attached_count; i++) { | |
1487 | if (device->device_id == (IDS_VAL(i) & 0xffff)) { | |
1da177e4 LT |
1488 | IDS_BIND(i) = device; |
1489 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); | |
1490 | } | |
1491 | } | |
1492 | #undef IDS_VAL | |
1493 | #undef IDS_BIND | |
1494 | } | |
1495 | ||
1496 | /* | |
1497 | * Arg: | |
1498 | * video : video bus device | |
1499 | * | |
1500 | * Return: | |
1501 | * < 0 : error | |
1502 | * | |
1503 | * Call _DOD to enumerate all devices attached to display adapter | |
1504 | * | |
4be44fcd | 1505 | */ |
1da177e4 LT |
1506 | |
1507 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1508 | { | |
4be44fcd LB |
1509 | int status; |
1510 | int count; | |
1511 | int i; | |
1da177e4 | 1512 | struct acpi_video_enumerated_device *active_device_list; |
4be44fcd LB |
1513 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1514 | union acpi_object *dod = NULL; | |
1515 | union acpi_object *obj; | |
1da177e4 | 1516 | |
90130268 | 1517 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1518 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1519 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1520 | return status; |
1da177e4 LT |
1521 | } |
1522 | ||
50dd0969 | 1523 | dod = buffer.pointer; |
1da177e4 | 1524 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1525 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1526 | status = -EFAULT; |
1527 | goto out; | |
1528 | } | |
1529 | ||
1530 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1531 | dod->package.count)); |
1da177e4 | 1532 | |
4be44fcd LB |
1533 | active_device_list = kmalloc((1 + |
1534 | dod->package.count) * | |
1535 | sizeof(struct | |
1536 | acpi_video_enumerated_device), | |
1537 | GFP_KERNEL); | |
1da177e4 LT |
1538 | |
1539 | if (!active_device_list) { | |
1540 | status = -ENOMEM; | |
1541 | goto out; | |
1542 | } | |
1543 | ||
1544 | count = 0; | |
1545 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1546 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1547 | |
1548 | if (obj->type != ACPI_TYPE_INTEGER) { | |
6468463a | 1549 | printk(KERN_ERR PREFIX "Invalid _DOD data\n"); |
4be44fcd LB |
1550 | active_device_list[i].value.int_val = |
1551 | ACPI_VIDEO_HEAD_INVALID; | |
1da177e4 LT |
1552 | } |
1553 | active_device_list[i].value.int_val = obj->integer.value; | |
1554 | active_device_list[i].bind_info = NULL; | |
4be44fcd LB |
1555 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1556 | (int)obj->integer.value)); | |
1da177e4 LT |
1557 | count++; |
1558 | } | |
1559 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; | |
1560 | ||
6044ec88 | 1561 | kfree(video->attached_array); |
4be44fcd | 1562 | |
1da177e4 LT |
1563 | video->attached_array = active_device_list; |
1564 | video->attached_count = count; | |
4be44fcd | 1565 | out: |
02438d87 | 1566 | kfree(buffer.pointer); |
d550d98d | 1567 | return status; |
1da177e4 LT |
1568 | } |
1569 | ||
1570 | /* | |
1571 | * Arg: | |
1572 | * video : video bus device | |
98fb8fe1 | 1573 | * event : notify event |
1da177e4 LT |
1574 | * |
1575 | * Return: | |
1576 | * < 0 : error | |
1577 | * | |
1578 | * 1. Find out the current active output device. | |
98fb8fe1 | 1579 | * 2. Identify the next output device to switch to. |
1da177e4 | 1580 | * 3. call _DSS to do actual switch. |
4be44fcd | 1581 | */ |
1da177e4 | 1582 | |
4be44fcd | 1583 | static int acpi_video_switch_output(struct acpi_video_bus *video, int event) |
1da177e4 | 1584 | { |
4be44fcd LB |
1585 | struct list_head *node, *next; |
1586 | struct acpi_video_device *dev = NULL; | |
1587 | struct acpi_video_device *dev_next = NULL; | |
1588 | struct acpi_video_device *dev_prev = NULL; | |
1da177e4 LT |
1589 | unsigned long state; |
1590 | int status = 0; | |
1591 | ||
1da177e4 LT |
1592 | |
1593 | list_for_each_safe(node, next, &video->video_device_list) { | |
7334571f | 1594 | dev = container_of(node, struct acpi_video_device, entry); |
1da177e4 | 1595 | status = acpi_video_device_get_state(dev, &state); |
4be44fcd LB |
1596 | if (state & 0x2) { |
1597 | dev_next = | |
1598 | container_of(node->next, struct acpi_video_device, | |
1599 | entry); | |
1600 | dev_prev = | |
1601 | container_of(node->prev, struct acpi_video_device, | |
1602 | entry); | |
1da177e4 LT |
1603 | goto out; |
1604 | } | |
1605 | } | |
1606 | dev_next = container_of(node->next, struct acpi_video_device, entry); | |
1607 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); | |
4be44fcd | 1608 | out: |
1da177e4 LT |
1609 | switch (event) { |
1610 | case ACPI_VIDEO_NOTIFY_CYCLE: | |
1611 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: | |
1612 | acpi_video_device_set_state(dev, 0); | |
1613 | acpi_video_device_set_state(dev_next, 0x80000001); | |
1614 | break; | |
1615 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: | |
1616 | acpi_video_device_set_state(dev, 0); | |
1617 | acpi_video_device_set_state(dev_prev, 0x80000001); | |
1618 | default: | |
1619 | break; | |
1620 | } | |
1621 | ||
d550d98d | 1622 | return status; |
1da177e4 LT |
1623 | } |
1624 | ||
4be44fcd LB |
1625 | static int |
1626 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1627 | u32 level_current, u32 event) | |
1da177e4 | 1628 | { |
f4715189 TT |
1629 | int min, max, min_above, max_below, i, l; |
1630 | max = max_below = 0; | |
1631 | min = min_above = 255; | |
1632 | for (i = 0; i < device->brightness->count; i++) { | |
1633 | l = device->brightness->levels[i]; | |
1634 | if (l < min) | |
1635 | min = l; | |
1636 | if (l > max) | |
1637 | max = l; | |
1638 | if (l < min_above && l > level_current) | |
1639 | min_above = l; | |
1640 | if (l > max_below && l < level_current) | |
1641 | max_below = l; | |
1642 | } | |
1643 | ||
1644 | switch (event) { | |
1645 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1646 | return (level_current < max) ? min_above : min; | |
1647 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1648 | return (level_current < max) ? min_above : max; | |
1649 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1650 | return (level_current > min) ? max_below : min; | |
1651 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1652 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1653 | return 0; | |
1654 | default: | |
1655 | return level_current; | |
1656 | } | |
1da177e4 LT |
1657 | } |
1658 | ||
1da177e4 | 1659 | static void |
4be44fcd | 1660 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 LT |
1661 | { |
1662 | unsigned long level_current, level_next; | |
1663 | acpi_video_device_lcd_get_level_current(device, &level_current); | |
1664 | level_next = acpi_video_get_next_level(device, level_current, event); | |
1665 | acpi_video_device_lcd_set_level(device, level_next); | |
1666 | } | |
1667 | ||
1668 | static int | |
4be44fcd LB |
1669 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1670 | struct acpi_device *device) | |
1da177e4 | 1671 | { |
4be44fcd LB |
1672 | int status = 0; |
1673 | struct list_head *node, *next; | |
1da177e4 | 1674 | |
1da177e4 LT |
1675 | |
1676 | acpi_video_device_enumerate(video); | |
1677 | ||
1678 | list_for_each_safe(node, next, &device->children) { | |
4be44fcd LB |
1679 | struct acpi_device *dev = |
1680 | list_entry(node, struct acpi_device, node); | |
1da177e4 LT |
1681 | |
1682 | if (!dev) | |
1683 | continue; | |
1684 | ||
1685 | status = acpi_video_bus_get_one_device(dev, video); | |
1686 | if (ACPI_FAILURE(status)) { | |
a6fc6720 | 1687 | ACPI_EXCEPTION((AE_INFO, status, "Cant attach device")); |
1da177e4 LT |
1688 | continue; |
1689 | } | |
1690 | ||
1691 | } | |
d550d98d | 1692 | return status; |
1da177e4 LT |
1693 | } |
1694 | ||
4be44fcd | 1695 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1696 | { |
031ec77b | 1697 | acpi_status status; |
1da177e4 LT |
1698 | struct acpi_video_bus *video; |
1699 | ||
1da177e4 LT |
1700 | |
1701 | if (!device || !device->video) | |
d550d98d | 1702 | return -ENOENT; |
1da177e4 LT |
1703 | |
1704 | video = device->video; | |
1705 | ||
1706 | down(&video->sem); | |
1707 | list_del(&device->entry); | |
1708 | up(&video->sem); | |
1709 | acpi_video_device_remove_fs(device->dev); | |
1710 | ||
90130268 | 1711 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1712 | ACPI_DEVICE_NOTIFY, |
1713 | acpi_video_device_notify); | |
599a52d1 | 1714 | backlight_device_unregister(device->backlight); |
23b0f015 | 1715 | video_output_unregister(device->output_dev); |
d550d98d | 1716 | return 0; |
1da177e4 LT |
1717 | } |
1718 | ||
4be44fcd | 1719 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1720 | { |
4be44fcd LB |
1721 | int status; |
1722 | struct list_head *node, *next; | |
1da177e4 | 1723 | |
1da177e4 LT |
1724 | |
1725 | list_for_each_safe(node, next, &video->video_device_list) { | |
4be44fcd LB |
1726 | struct acpi_video_device *data = |
1727 | list_entry(node, struct acpi_video_device, entry); | |
1da177e4 LT |
1728 | if (!data) |
1729 | continue; | |
1730 | ||
1731 | status = acpi_video_bus_put_one_device(data); | |
4be44fcd LB |
1732 | if (ACPI_FAILURE(status)) |
1733 | printk(KERN_WARNING PREFIX | |
1734 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1735 | |
d384ea69 | 1736 | if (data->brightness) |
973bf491 | 1737 | kfree(data->brightness->levels); |
6044ec88 | 1738 | kfree(data->brightness); |
1da177e4 LT |
1739 | kfree(data); |
1740 | } | |
1741 | ||
d550d98d | 1742 | return 0; |
1da177e4 LT |
1743 | } |
1744 | ||
1745 | /* acpi_video interface */ | |
1746 | ||
4be44fcd | 1747 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1748 | { |
1749 | return acpi_video_bus_DOS(video, 1, 0); | |
1750 | } | |
1751 | ||
4be44fcd | 1752 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1753 | { |
1754 | return acpi_video_bus_DOS(video, 0, 1); | |
1755 | } | |
1756 | ||
4be44fcd | 1757 | static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1758 | { |
50dd0969 | 1759 | struct acpi_video_bus *video = data; |
4be44fcd | 1760 | struct acpi_device *device = NULL; |
1da177e4 | 1761 | |
1da177e4 LT |
1762 | printk("video bus notify\n"); |
1763 | ||
1764 | if (!video) | |
d550d98d | 1765 | return; |
1da177e4 | 1766 | |
e6afa0de | 1767 | device = video->device; |
1da177e4 LT |
1768 | |
1769 | switch (event) { | |
98fb8fe1 | 1770 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 LT |
1771 | * most likely via hotkey. */ |
1772 | acpi_bus_generate_event(device, event, 0); | |
1773 | break; | |
1774 | ||
98fb8fe1 | 1775 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1776 | * connector. */ |
1777 | acpi_video_device_enumerate(video); | |
1778 | acpi_video_device_rebind(video); | |
1779 | acpi_video_switch_output(video, event); | |
1780 | acpi_bus_generate_event(device, event, 0); | |
1781 | break; | |
1782 | ||
4be44fcd LB |
1783 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
1784 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ | |
1785 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ | |
1da177e4 LT |
1786 | acpi_video_switch_output(video, event); |
1787 | acpi_bus_generate_event(device, event, 0); | |
1788 | break; | |
1789 | ||
1790 | default: | |
1791 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1792 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1793 | break; |
1794 | } | |
1795 | ||
d550d98d | 1796 | return; |
1da177e4 LT |
1797 | } |
1798 | ||
4be44fcd | 1799 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1800 | { |
50dd0969 | 1801 | struct acpi_video_device *video_device = data; |
4be44fcd | 1802 | struct acpi_device *device = NULL; |
1da177e4 | 1803 | |
1da177e4 | 1804 | if (!video_device) |
d550d98d | 1805 | return; |
1da177e4 | 1806 | |
e6afa0de | 1807 | device = video_device->dev; |
1da177e4 LT |
1808 | |
1809 | switch (event) { | |
4be44fcd LB |
1810 | case ACPI_VIDEO_NOTIFY_SWITCH: /* change in status (cycle output device) */ |
1811 | case ACPI_VIDEO_NOTIFY_PROBE: /* change in status (output device status) */ | |
1da177e4 LT |
1812 | acpi_bus_generate_event(device, event, 0); |
1813 | break; | |
4be44fcd LB |
1814 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
1815 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ | |
1816 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ | |
1817 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ | |
1818 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ | |
1819 | acpi_video_switch_brightness(video_device, event); | |
1da177e4 LT |
1820 | acpi_bus_generate_event(device, event, 0); |
1821 | break; | |
1822 | default: | |
1823 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1824 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1825 | break; |
1826 | } | |
d550d98d | 1827 | return; |
1da177e4 LT |
1828 | } |
1829 | ||
4be44fcd | 1830 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1831 | { |
4be44fcd LB |
1832 | int result = 0; |
1833 | acpi_status status = 0; | |
1834 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 1835 | |
4be44fcd | 1836 | |
1da177e4 | 1837 | if (!device) |
d550d98d | 1838 | return -EINVAL; |
1da177e4 | 1839 | |
36bcbec7 | 1840 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 1841 | if (!video) |
d550d98d | 1842 | return -ENOMEM; |
1da177e4 | 1843 | |
e6afa0de | 1844 | video->device = device; |
1da177e4 LT |
1845 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
1846 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1847 | acpi_driver_data(device) = video; | |
1848 | ||
1849 | acpi_video_bus_find_cap(video); | |
1850 | result = acpi_video_bus_check(video); | |
1851 | if (result) | |
1852 | goto end; | |
1853 | ||
1854 | result = acpi_video_bus_add_fs(device); | |
1855 | if (result) | |
1856 | goto end; | |
1857 | ||
1858 | init_MUTEX(&video->sem); | |
1859 | INIT_LIST_HEAD(&video->video_device_list); | |
1860 | ||
1861 | acpi_video_bus_get_devices(video, device); | |
1862 | acpi_video_bus_start_devices(video); | |
1863 | ||
90130268 | 1864 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1865 | ACPI_DEVICE_NOTIFY, |
1866 | acpi_video_bus_notify, video); | |
1da177e4 LT |
1867 | if (ACPI_FAILURE(status)) { |
1868 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
4be44fcd | 1869 | "Error installing notify handler\n")); |
973bf491 YL |
1870 | acpi_video_bus_stop_devices(video); |
1871 | acpi_video_bus_put_devices(video); | |
1872 | kfree(video->attached_array); | |
1873 | acpi_video_bus_remove_fs(device); | |
1da177e4 LT |
1874 | result = -ENODEV; |
1875 | goto end; | |
1876 | } | |
1877 | ||
1878 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", | |
4be44fcd LB |
1879 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
1880 | video->flags.multihead ? "yes" : "no", | |
1881 | video->flags.rom ? "yes" : "no", | |
1882 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 1883 | |
4be44fcd | 1884 | end: |
973bf491 | 1885 | if (result) |
1da177e4 | 1886 | kfree(video); |
1da177e4 | 1887 | |
d550d98d | 1888 | return result; |
1da177e4 LT |
1889 | } |
1890 | ||
4be44fcd | 1891 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 1892 | { |
4be44fcd LB |
1893 | acpi_status status = 0; |
1894 | struct acpi_video_bus *video = NULL; | |
1da177e4 | 1895 | |
1da177e4 LT |
1896 | |
1897 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 1898 | return -EINVAL; |
1da177e4 | 1899 | |
50dd0969 | 1900 | video = acpi_driver_data(device); |
1da177e4 LT |
1901 | |
1902 | acpi_video_bus_stop_devices(video); | |
1903 | ||
90130268 | 1904 | status = acpi_remove_notify_handler(video->device->handle, |
4be44fcd LB |
1905 | ACPI_DEVICE_NOTIFY, |
1906 | acpi_video_bus_notify); | |
1da177e4 LT |
1907 | |
1908 | acpi_video_bus_put_devices(video); | |
1909 | acpi_video_bus_remove_fs(device); | |
1910 | ||
6044ec88 | 1911 | kfree(video->attached_array); |
1da177e4 LT |
1912 | kfree(video); |
1913 | ||
d550d98d | 1914 | return 0; |
1da177e4 LT |
1915 | } |
1916 | ||
4be44fcd | 1917 | static int __init acpi_video_init(void) |
1da177e4 | 1918 | { |
4be44fcd | 1919 | int result = 0; |
1da177e4 | 1920 | |
1da177e4 LT |
1921 | |
1922 | /* | |
4be44fcd LB |
1923 | acpi_dbg_level = 0xFFFFFFFF; |
1924 | acpi_dbg_layer = 0x08000000; | |
1925 | */ | |
1da177e4 LT |
1926 | |
1927 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1928 | if (!acpi_video_dir) | |
d550d98d | 1929 | return -ENODEV; |
1da177e4 LT |
1930 | acpi_video_dir->owner = THIS_MODULE; |
1931 | ||
1932 | result = acpi_bus_register_driver(&acpi_video_bus); | |
1933 | if (result < 0) { | |
1934 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 1935 | return -ENODEV; |
1da177e4 LT |
1936 | } |
1937 | ||
d550d98d | 1938 | return 0; |
1da177e4 LT |
1939 | } |
1940 | ||
4be44fcd | 1941 | static void __exit acpi_video_exit(void) |
1da177e4 | 1942 | { |
1da177e4 LT |
1943 | |
1944 | acpi_bus_unregister_driver(&acpi_video_bus); | |
1945 | ||
1946 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
1947 | ||
d550d98d | 1948 | return; |
1da177e4 LT |
1949 | } |
1950 | ||
1951 | module_init(acpi_video_init); | |
1952 | module_exit(acpi_video_exit); |