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> | |
bbac81f5 | 32 | #include <linux/mutex.h> |
1da177e4 LT |
33 | #include <linux/proc_fs.h> |
34 | #include <linux/seq_file.h> | |
e9dab196 | 35 | #include <linux/input.h> |
2f3d000a | 36 | #include <linux/backlight.h> |
702ed512 | 37 | #include <linux/thermal.h> |
23b0f015 | 38 | #include <linux/video_output.h> |
935e5f29 | 39 | #include <linux/sort.h> |
74a365b3 MG |
40 | #include <linux/pci.h> |
41 | #include <linux/pci_ids.h> | |
1da177e4 LT |
42 | #include <asm/uaccess.h> |
43 | ||
44 | #include <acpi/acpi_bus.h> | |
45 | #include <acpi/acpi_drivers.h> | |
46 | ||
1da177e4 | 47 | #define ACPI_VIDEO_CLASS "video" |
1da177e4 LT |
48 | #define ACPI_VIDEO_BUS_NAME "Video Bus" |
49 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" | |
50 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 | |
51 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 | |
52 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 | |
53 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 | |
54 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 | |
55 | ||
f4715189 TT |
56 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85 |
57 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 | |
58 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 | |
59 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88 | |
60 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89 | |
1da177e4 | 61 | |
2f3d000a | 62 | #define MAX_NAME_LEN 20 |
1da177e4 | 63 | |
82cae999 RZ |
64 | #define ACPI_VIDEO_DISPLAY_CRT 1 |
65 | #define ACPI_VIDEO_DISPLAY_TV 2 | |
66 | #define ACPI_VIDEO_DISPLAY_DVI 3 | |
67 | #define ACPI_VIDEO_DISPLAY_LCD 4 | |
68 | ||
1da177e4 | 69 | #define _COMPONENT ACPI_VIDEO_COMPONENT |
f52fd66d | 70 | ACPI_MODULE_NAME("video"); |
1da177e4 | 71 | |
f52fd66d | 72 | MODULE_AUTHOR("Bruno Ducrot"); |
7cda93e0 | 73 | MODULE_DESCRIPTION("ACPI Video Driver"); |
1da177e4 LT |
74 | MODULE_LICENSE("GPL"); |
75 | ||
8a681a4d ZR |
76 | static int brightness_switch_enabled = 1; |
77 | module_param(brightness_switch_enabled, bool, 0644); | |
78 | ||
4be44fcd LB |
79 | static int acpi_video_bus_add(struct acpi_device *device); |
80 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
863c1490 | 81 | static int acpi_video_resume(struct acpi_device *device); |
7015558f | 82 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event); |
1da177e4 | 83 | |
1ba90e3a TR |
84 | static const struct acpi_device_id video_device_ids[] = { |
85 | {ACPI_VIDEO_HID, 0}, | |
86 | {"", 0}, | |
87 | }; | |
88 | MODULE_DEVICE_TABLE(acpi, video_device_ids); | |
89 | ||
1da177e4 | 90 | static struct acpi_driver acpi_video_bus = { |
c2b6705b | 91 | .name = "video", |
1da177e4 | 92 | .class = ACPI_VIDEO_CLASS, |
1ba90e3a | 93 | .ids = video_device_ids, |
1da177e4 LT |
94 | .ops = { |
95 | .add = acpi_video_bus_add, | |
96 | .remove = acpi_video_bus_remove, | |
863c1490 | 97 | .resume = acpi_video_resume, |
7015558f | 98 | .notify = acpi_video_bus_notify, |
4be44fcd | 99 | }, |
1da177e4 LT |
100 | }; |
101 | ||
102 | struct acpi_video_bus_flags { | |
4be44fcd LB |
103 | u8 multihead:1; /* can switch video heads */ |
104 | u8 rom:1; /* can retrieve a video rom */ | |
105 | u8 post:1; /* can configure the head to */ | |
106 | u8 reserved:5; | |
1da177e4 LT |
107 | }; |
108 | ||
109 | struct acpi_video_bus_cap { | |
4be44fcd LB |
110 | u8 _DOS:1; /*Enable/Disable output switching */ |
111 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
112 | u8 _ROM:1; /*Get ROM Data */ | |
113 | u8 _GPD:1; /*Get POST Device */ | |
114 | u8 _SPD:1; /*Set POST Device */ | |
115 | u8 _VPO:1; /*Video POST Options */ | |
116 | u8 reserved:2; | |
1da177e4 LT |
117 | }; |
118 | ||
4be44fcd LB |
119 | struct acpi_video_device_attrib { |
120 | u32 display_index:4; /* A zero-based instance of the Display */ | |
98fb8fe1 | 121 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
4be44fcd | 122 | u32 display_type:4; /*Describe the specific type in use */ |
98fb8fe1 | 123 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
4be44fcd LB |
124 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
125 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
126 | the VGA device. */ | |
127 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
128 | u32 reserved:10; /*Must be 0 */ | |
129 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
130 | }; |
131 | ||
132 | struct acpi_video_enumerated_device { | |
133 | union { | |
134 | u32 int_val; | |
4be44fcd | 135 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
136 | } value; |
137 | struct acpi_video_device *bind_info; | |
138 | }; | |
139 | ||
140 | struct acpi_video_bus { | |
e6afa0de | 141 | struct acpi_device *device; |
4be44fcd | 142 | u8 dos_setting; |
1da177e4 | 143 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
144 | u8 attached_count; |
145 | struct acpi_video_bus_cap cap; | |
1da177e4 | 146 | struct acpi_video_bus_flags flags; |
4be44fcd | 147 | struct list_head video_device_list; |
bbac81f5 | 148 | struct mutex device_list_lock; /* protects video_device_list */ |
4be44fcd | 149 | struct proc_dir_entry *dir; |
e9dab196 LY |
150 | struct input_dev *input; |
151 | char phys[32]; /* for input device */ | |
1da177e4 LT |
152 | }; |
153 | ||
154 | struct acpi_video_device_flags { | |
4be44fcd LB |
155 | u8 crt:1; |
156 | u8 lcd:1; | |
157 | u8 tvout:1; | |
82cae999 | 158 | u8 dvi:1; |
4be44fcd LB |
159 | u8 bios:1; |
160 | u8 unknown:1; | |
82cae999 | 161 | u8 reserved:2; |
1da177e4 LT |
162 | }; |
163 | ||
164 | struct acpi_video_device_cap { | |
4be44fcd LB |
165 | u8 _ADR:1; /*Return the unique ID */ |
166 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
167 | u8 _BCM:1; /*Set the brightness level */ | |
2f3d000a | 168 | u8 _BQC:1; /* Get current brightness level */ |
c60d638e | 169 | u8 _BCQ:1; /* Some buggy BIOS uses _BCQ instead of _BQC */ |
4be44fcd LB |
170 | u8 _DDC:1; /*Return the EDID for this device */ |
171 | u8 _DCS:1; /*Return status of output device */ | |
172 | u8 _DGS:1; /*Query graphics state */ | |
173 | u8 _DSS:1; /*Device state set */ | |
1da177e4 LT |
174 | }; |
175 | ||
d32f6947 ZR |
176 | struct acpi_video_brightness_flags { |
177 | u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */ | |
d80fb99f | 178 | u8 _BCL_reversed:1; /* _BCL package is in a reversed order*/ |
1a7c618a ZR |
179 | u8 _BCL_use_index:1; /* levels in _BCL are index values */ |
180 | u8 _BCM_use_index:1; /* input of _BCM is an index value */ | |
181 | u8 _BQC_use_index:1; /* _BQC returns an index value */ | |
d32f6947 ZR |
182 | }; |
183 | ||
1da177e4 | 184 | struct acpi_video_device_brightness { |
4be44fcd LB |
185 | int curr; |
186 | int count; | |
187 | int *levels; | |
d32f6947 | 188 | struct acpi_video_brightness_flags flags; |
1da177e4 LT |
189 | }; |
190 | ||
191 | struct acpi_video_device { | |
4be44fcd LB |
192 | unsigned long device_id; |
193 | struct acpi_video_device_flags flags; | |
194 | struct acpi_video_device_cap cap; | |
195 | struct list_head entry; | |
196 | struct acpi_video_bus *video; | |
197 | struct acpi_device *dev; | |
1da177e4 | 198 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 199 | struct backlight_device *backlight; |
702ed512 | 200 | struct thermal_cooling_device *cdev; |
23b0f015 | 201 | struct output_device *output_dev; |
1da177e4 LT |
202 | }; |
203 | ||
1da177e4 LT |
204 | /* bus */ |
205 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
070d8eb1 | 206 | static const struct file_operations acpi_video_bus_info_fops = { |
cf7acfab | 207 | .owner = THIS_MODULE, |
4be44fcd LB |
208 | .open = acpi_video_bus_info_open_fs, |
209 | .read = seq_read, | |
210 | .llseek = seq_lseek, | |
211 | .release = single_release, | |
1da177e4 LT |
212 | }; |
213 | ||
214 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
070d8eb1 | 215 | static const struct file_operations acpi_video_bus_ROM_fops = { |
cf7acfab | 216 | .owner = THIS_MODULE, |
4be44fcd LB |
217 | .open = acpi_video_bus_ROM_open_fs, |
218 | .read = seq_read, | |
219 | .llseek = seq_lseek, | |
220 | .release = single_release, | |
1da177e4 LT |
221 | }; |
222 | ||
4be44fcd LB |
223 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
224 | struct file *file); | |
070d8eb1 | 225 | static const struct file_operations acpi_video_bus_POST_info_fops = { |
cf7acfab | 226 | .owner = THIS_MODULE, |
4be44fcd LB |
227 | .open = acpi_video_bus_POST_info_open_fs, |
228 | .read = seq_read, | |
229 | .llseek = seq_lseek, | |
230 | .release = single_release, | |
1da177e4 LT |
231 | }; |
232 | ||
233 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
c07c9a78 | 234 | static ssize_t acpi_video_bus_write_POST(struct file *file, |
b7171ae7 JE |
235 | const char __user *buffer, size_t count, loff_t *data); |
236 | static const struct file_operations acpi_video_bus_POST_fops = { | |
cf7acfab | 237 | .owner = THIS_MODULE, |
4be44fcd LB |
238 | .open = acpi_video_bus_POST_open_fs, |
239 | .read = seq_read, | |
b7171ae7 | 240 | .write = acpi_video_bus_write_POST, |
4be44fcd LB |
241 | .llseek = seq_lseek, |
242 | .release = single_release, | |
1da177e4 LT |
243 | }; |
244 | ||
1da177e4 | 245 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
c07c9a78 | 246 | static ssize_t acpi_video_bus_write_DOS(struct file *file, |
b7171ae7 JE |
247 | const char __user *buffer, size_t count, loff_t *data); |
248 | static const struct file_operations acpi_video_bus_DOS_fops = { | |
cf7acfab | 249 | .owner = THIS_MODULE, |
4be44fcd LB |
250 | .open = acpi_video_bus_DOS_open_fs, |
251 | .read = seq_read, | |
b7171ae7 | 252 | .write = acpi_video_bus_write_DOS, |
4be44fcd LB |
253 | .llseek = seq_lseek, |
254 | .release = single_release, | |
1da177e4 LT |
255 | }; |
256 | ||
257 | /* device */ | |
4be44fcd LB |
258 | static int acpi_video_device_info_open_fs(struct inode *inode, |
259 | struct file *file); | |
070d8eb1 | 260 | static const struct file_operations acpi_video_device_info_fops = { |
cf7acfab | 261 | .owner = THIS_MODULE, |
4be44fcd LB |
262 | .open = acpi_video_device_info_open_fs, |
263 | .read = seq_read, | |
264 | .llseek = seq_lseek, | |
265 | .release = single_release, | |
1da177e4 LT |
266 | }; |
267 | ||
4be44fcd LB |
268 | static int acpi_video_device_state_open_fs(struct inode *inode, |
269 | struct file *file); | |
c07c9a78 | 270 | static ssize_t acpi_video_device_write_state(struct file *file, |
b7171ae7 JE |
271 | const char __user *buffer, size_t count, loff_t *data); |
272 | static const struct file_operations acpi_video_device_state_fops = { | |
cf7acfab | 273 | .owner = THIS_MODULE, |
4be44fcd LB |
274 | .open = acpi_video_device_state_open_fs, |
275 | .read = seq_read, | |
b7171ae7 | 276 | .write = acpi_video_device_write_state, |
4be44fcd LB |
277 | .llseek = seq_lseek, |
278 | .release = single_release, | |
1da177e4 LT |
279 | }; |
280 | ||
4be44fcd LB |
281 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
282 | struct file *file); | |
c07c9a78 | 283 | static ssize_t acpi_video_device_write_brightness(struct file *file, |
b7171ae7 | 284 | const char __user *buffer, size_t count, loff_t *data); |
1da177e4 | 285 | static struct file_operations acpi_video_device_brightness_fops = { |
cf7acfab | 286 | .owner = THIS_MODULE, |
4be44fcd LB |
287 | .open = acpi_video_device_brightness_open_fs, |
288 | .read = seq_read, | |
b7171ae7 | 289 | .write = acpi_video_device_write_brightness, |
4be44fcd LB |
290 | .llseek = seq_lseek, |
291 | .release = single_release, | |
1da177e4 LT |
292 | }; |
293 | ||
4be44fcd LB |
294 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
295 | struct file *file); | |
070d8eb1 | 296 | static const struct file_operations acpi_video_device_EDID_fops = { |
cf7acfab | 297 | .owner = THIS_MODULE, |
4be44fcd LB |
298 | .open = acpi_video_device_EDID_open_fs, |
299 | .read = seq_read, | |
300 | .llseek = seq_lseek, | |
301 | .release = single_release, | |
1da177e4 LT |
302 | }; |
303 | ||
b7171ae7 | 304 | static const char device_decode[][30] = { |
1da177e4 LT |
305 | "motherboard VGA device", |
306 | "PCI VGA device", | |
307 | "AGP VGA device", | |
308 | "UNKNOWN", | |
309 | }; | |
310 | ||
4be44fcd LB |
311 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
312 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
313 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
314 | struct acpi_video_device *device); | |
1da177e4 | 315 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
2f3d000a YL |
316 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
317 | int level); | |
318 | static int acpi_video_device_lcd_get_level_current( | |
319 | struct acpi_video_device *device, | |
27663c58 | 320 | unsigned long long *level); |
4be44fcd LB |
321 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
322 | u32 level_current, u32 event); | |
c8890f90 | 323 | static int acpi_video_switch_brightness(struct acpi_video_device *device, |
4be44fcd | 324 | int event); |
23b0f015 | 325 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
27663c58 | 326 | unsigned long long *state); |
23b0f015 LY |
327 | static int acpi_video_output_get(struct output_device *od); |
328 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 329 | |
2f3d000a YL |
330 | /*backlight device sysfs support*/ |
331 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
332 | { | |
27663c58 | 333 | unsigned long long cur_level; |
38531e6f | 334 | int i; |
2f3d000a | 335 | struct acpi_video_device *vd = |
655bfd7a | 336 | (struct acpi_video_device *)bl_get_data(bd); |
c8890f90 ZR |
337 | |
338 | if (acpi_video_device_lcd_get_level_current(vd, &cur_level)) | |
339 | return -EINVAL; | |
38531e6f MG |
340 | for (i = 2; i < vd->brightness->count; i++) { |
341 | if (vd->brightness->levels[i] == cur_level) | |
342 | /* The first two entries are special - see page 575 | |
343 | of the ACPI spec 3.0 */ | |
344 | return i-2; | |
345 | } | |
346 | return 0; | |
2f3d000a YL |
347 | } |
348 | ||
349 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
350 | { | |
24450c7a | 351 | int request_level = bd->props.brightness + 2; |
2f3d000a | 352 | struct acpi_video_device *vd = |
655bfd7a | 353 | (struct acpi_video_device *)bl_get_data(bd); |
24450c7a ZR |
354 | |
355 | return acpi_video_device_lcd_set_level(vd, | |
356 | vd->brightness->levels[request_level]); | |
2f3d000a YL |
357 | } |
358 | ||
599a52d1 RP |
359 | static struct backlight_ops acpi_backlight_ops = { |
360 | .get_brightness = acpi_video_get_brightness, | |
361 | .update_status = acpi_video_set_brightness, | |
362 | }; | |
363 | ||
23b0f015 LY |
364 | /*video output device sysfs support*/ |
365 | static int acpi_video_output_get(struct output_device *od) | |
366 | { | |
27663c58 | 367 | unsigned long long state; |
23b0f015 | 368 | struct acpi_video_device *vd = |
60043428 | 369 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
370 | acpi_video_device_get_state(vd, &state); |
371 | return (int)state; | |
372 | } | |
373 | ||
374 | static int acpi_video_output_set(struct output_device *od) | |
375 | { | |
376 | unsigned long state = od->request_state; | |
377 | struct acpi_video_device *vd= | |
60043428 | 378 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
379 | return acpi_video_device_set_state(vd, state); |
380 | } | |
381 | ||
382 | static struct output_properties acpi_output_properties = { | |
383 | .set_state = acpi_video_output_set, | |
384 | .get_status = acpi_video_output_get, | |
385 | }; | |
702ed512 ZR |
386 | |
387 | ||
388 | /* thermal cooling device callbacks */ | |
6503e5df MG |
389 | static int video_get_max_state(struct thermal_cooling_device *cdev, unsigned |
390 | long *state) | |
702ed512 ZR |
391 | { |
392 | struct acpi_device *device = cdev->devdata; | |
393 | struct acpi_video_device *video = acpi_driver_data(device); | |
394 | ||
6503e5df MG |
395 | *state = video->brightness->count - 3; |
396 | return 0; | |
702ed512 ZR |
397 | } |
398 | ||
6503e5df MG |
399 | static int video_get_cur_state(struct thermal_cooling_device *cdev, unsigned |
400 | long *state) | |
702ed512 ZR |
401 | { |
402 | struct acpi_device *device = cdev->devdata; | |
403 | struct acpi_video_device *video = acpi_driver_data(device); | |
27663c58 | 404 | unsigned long long level; |
6503e5df | 405 | int offset; |
702ed512 | 406 | |
c8890f90 ZR |
407 | if (acpi_video_device_lcd_get_level_current(video, &level)) |
408 | return -EINVAL; | |
6503e5df MG |
409 | for (offset = 2; offset < video->brightness->count; offset++) |
410 | if (level == video->brightness->levels[offset]) { | |
411 | *state = video->brightness->count - offset - 1; | |
412 | return 0; | |
413 | } | |
702ed512 ZR |
414 | |
415 | return -EINVAL; | |
416 | } | |
417 | ||
418 | static int | |
6503e5df | 419 | video_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) |
702ed512 ZR |
420 | { |
421 | struct acpi_device *device = cdev->devdata; | |
422 | struct acpi_video_device *video = acpi_driver_data(device); | |
423 | int level; | |
424 | ||
425 | if ( state >= video->brightness->count - 2) | |
426 | return -EINVAL; | |
427 | ||
428 | state = video->brightness->count - state; | |
429 | level = video->brightness->levels[state -1]; | |
430 | return acpi_video_device_lcd_set_level(video, level); | |
431 | } | |
432 | ||
433 | static struct thermal_cooling_device_ops video_cooling_ops = { | |
434 | .get_max_state = video_get_max_state, | |
435 | .get_cur_state = video_get_cur_state, | |
436 | .set_cur_state = video_set_cur_state, | |
437 | }; | |
438 | ||
1da177e4 LT |
439 | /* -------------------------------------------------------------------------- |
440 | Video Management | |
441 | -------------------------------------------------------------------------- */ | |
442 | ||
443 | /* device */ | |
444 | ||
445 | static int | |
27663c58 | 446 | acpi_video_device_query(struct acpi_video_device *device, unsigned long long *state) |
1da177e4 | 447 | { |
4be44fcd | 448 | int status; |
90130268 PM |
449 | |
450 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state); | |
1da177e4 | 451 | |
d550d98d | 452 | return status; |
1da177e4 LT |
453 | } |
454 | ||
455 | static int | |
4be44fcd | 456 | acpi_video_device_get_state(struct acpi_video_device *device, |
27663c58 | 457 | unsigned long long *state) |
1da177e4 | 458 | { |
4be44fcd | 459 | int status; |
1da177e4 | 460 | |
90130268 | 461 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 462 | |
d550d98d | 463 | return status; |
1da177e4 LT |
464 | } |
465 | ||
466 | static int | |
4be44fcd | 467 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 468 | { |
4be44fcd LB |
469 | int status; |
470 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
471 | struct acpi_object_list args = { 1, &arg0 }; | |
27663c58 | 472 | unsigned long long ret; |
1da177e4 | 473 | |
1da177e4 LT |
474 | |
475 | arg0.integer.value = state; | |
90130268 | 476 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 477 | |
d550d98d | 478 | return status; |
1da177e4 LT |
479 | } |
480 | ||
481 | static int | |
4be44fcd LB |
482 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
483 | union acpi_object **levels) | |
1da177e4 | 484 | { |
4be44fcd LB |
485 | int status; |
486 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
487 | union acpi_object *obj; | |
1da177e4 | 488 | |
1da177e4 LT |
489 | |
490 | *levels = NULL; | |
491 | ||
90130268 | 492 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 493 | if (!ACPI_SUCCESS(status)) |
d550d98d | 494 | return status; |
4be44fcd | 495 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 496 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 497 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
498 | status = -EFAULT; |
499 | goto err; | |
500 | } | |
501 | ||
502 | *levels = obj; | |
503 | ||
d550d98d | 504 | return 0; |
1da177e4 | 505 | |
4be44fcd | 506 | err: |
6044ec88 | 507 | kfree(buffer.pointer); |
1da177e4 | 508 | |
d550d98d | 509 | return status; |
1da177e4 LT |
510 | } |
511 | ||
512 | static int | |
4be44fcd | 513 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 514 | { |
24450c7a | 515 | int status; |
4be44fcd LB |
516 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
517 | struct acpi_object_list args = { 1, &arg0 }; | |
9e6dada9 | 518 | int state; |
1da177e4 | 519 | |
1da177e4 | 520 | arg0.integer.value = level; |
1da177e4 | 521 | |
24450c7a ZR |
522 | status = acpi_evaluate_object(device->dev->handle, "_BCM", |
523 | &args, NULL); | |
524 | if (ACPI_FAILURE(status)) { | |
525 | ACPI_ERROR((AE_INFO, "Evaluating _BCM failed")); | |
526 | return -EIO; | |
527 | } | |
528 | ||
4500ca8e | 529 | device->brightness->curr = level; |
9e6dada9 | 530 | for (state = 2; state < device->brightness->count; state++) |
24450c7a | 531 | if (level == device->brightness->levels[state]) { |
1a7c618a ZR |
532 | if (device->backlight) |
533 | device->backlight->props.brightness = state - 2; | |
24450c7a ZR |
534 | return 0; |
535 | } | |
9e6dada9 | 536 | |
24450c7a ZR |
537 | ACPI_ERROR((AE_INFO, "Current brightness invalid")); |
538 | return -EINVAL; | |
1da177e4 LT |
539 | } |
540 | ||
541 | static int | |
4be44fcd | 542 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
27663c58 | 543 | unsigned long long *level) |
1da177e4 | 544 | { |
c8890f90 ZR |
545 | acpi_status status = AE_OK; |
546 | ||
c60d638e ZR |
547 | if (device->cap._BQC || device->cap._BCQ) { |
548 | char *buf = device->cap._BQC ? "_BQC" : "_BCQ"; | |
549 | ||
550 | status = acpi_evaluate_integer(device->dev->handle, buf, | |
c8890f90 ZR |
551 | NULL, level); |
552 | if (ACPI_SUCCESS(status)) { | |
1a7c618a ZR |
553 | if (device->brightness->flags._BQC_use_index) { |
554 | if (device->brightness->flags._BCL_reversed) | |
555 | *level = device->brightness->count | |
556 | - 3 - (*level); | |
557 | *level = device->brightness->levels[*level + 2]; | |
558 | ||
559 | } | |
c8890f90 ZR |
560 | device->brightness->curr = *level; |
561 | return 0; | |
562 | } else { | |
563 | /* Fixme: | |
564 | * should we return an error or ignore this failure? | |
565 | * dev->brightness->curr is a cached value which stores | |
566 | * the correct current backlight level in most cases. | |
567 | * ACPI video backlight still works w/ buggy _BQC. | |
568 | * http://bugzilla.kernel.org/show_bug.cgi?id=12233 | |
569 | */ | |
c60d638e ZR |
570 | ACPI_WARNING((AE_INFO, "Evaluating %s failed", buf)); |
571 | device->cap._BQC = device->cap._BCQ = 0; | |
c8890f90 ZR |
572 | } |
573 | } | |
574 | ||
4500ca8e | 575 | *level = device->brightness->curr; |
c8890f90 | 576 | return 0; |
1da177e4 LT |
577 | } |
578 | ||
579 | static int | |
4be44fcd LB |
580 | acpi_video_device_EDID(struct acpi_video_device *device, |
581 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 582 | { |
4be44fcd LB |
583 | int status; |
584 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
585 | union acpi_object *obj; | |
586 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
587 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 588 | |
1da177e4 LT |
589 | |
590 | *edid = NULL; | |
591 | ||
592 | if (!device) | |
d550d98d | 593 | return -ENODEV; |
1da177e4 LT |
594 | if (length == 128) |
595 | arg0.integer.value = 1; | |
596 | else if (length == 256) | |
597 | arg0.integer.value = 2; | |
598 | else | |
d550d98d | 599 | return -EINVAL; |
1da177e4 | 600 | |
90130268 | 601 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 602 | if (ACPI_FAILURE(status)) |
d550d98d | 603 | return -ENODEV; |
1da177e4 | 604 | |
50dd0969 | 605 | obj = buffer.pointer; |
1da177e4 LT |
606 | |
607 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
608 | *edid = obj; | |
609 | else { | |
6468463a | 610 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
611 | status = -EFAULT; |
612 | kfree(obj); | |
613 | } | |
614 | ||
d550d98d | 615 | return status; |
1da177e4 LT |
616 | } |
617 | ||
1da177e4 LT |
618 | /* bus */ |
619 | ||
620 | static int | |
4be44fcd | 621 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 622 | { |
4be44fcd | 623 | int status; |
27663c58 | 624 | unsigned long long tmp; |
4be44fcd LB |
625 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
626 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 627 | |
1da177e4 LT |
628 | |
629 | arg0.integer.value = option; | |
630 | ||
90130268 | 631 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 632 | if (ACPI_SUCCESS(status)) |
4be44fcd | 633 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 634 | |
d550d98d | 635 | return status; |
1da177e4 LT |
636 | } |
637 | ||
638 | static int | |
27663c58 | 639 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long long *id) |
1da177e4 LT |
640 | { |
641 | int status; | |
642 | ||
90130268 | 643 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 644 | |
d550d98d | 645 | return status; |
1da177e4 LT |
646 | } |
647 | ||
648 | static int | |
4be44fcd | 649 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
27663c58 | 650 | unsigned long long *options) |
1da177e4 | 651 | { |
4be44fcd | 652 | int status; |
1da177e4 | 653 | |
90130268 | 654 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
655 | *options &= 3; |
656 | ||
d550d98d | 657 | return status; |
1da177e4 LT |
658 | } |
659 | ||
660 | /* | |
661 | * Arg: | |
662 | * video : video bus device pointer | |
663 | * bios_flag : | |
664 | * 0. The system BIOS should NOT automatically switch(toggle) | |
665 | * the active display output. | |
666 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 667 | * active display output. No switch event. |
1da177e4 LT |
668 | * 2. The _DGS value should be locked. |
669 | * 3. The system BIOS should not automatically switch (toggle) the | |
670 | * active display output, but instead generate the display switch | |
671 | * event notify code. | |
672 | * lcd_flag : | |
673 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 674 | * of the LCD when the power changes from AC to DC |
1da177e4 | 675 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 676 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
677 | * Return Value: |
678 | * -1 wrong arg. | |
679 | */ | |
680 | ||
681 | static int | |
4be44fcd | 682 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 683 | { |
4be44fcd LB |
684 | acpi_integer status = 0; |
685 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
686 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 687 | |
1da177e4 | 688 | |
4be44fcd | 689 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
690 | status = -1; |
691 | goto Failed; | |
692 | } | |
693 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
694 | video->dos_setting = arg0.integer.value; | |
90130268 | 695 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 696 | |
4be44fcd | 697 | Failed: |
d550d98d | 698 | return status; |
1da177e4 LT |
699 | } |
700 | ||
935e5f29 ZR |
701 | /* |
702 | * Simple comparison function used to sort backlight levels. | |
703 | */ | |
704 | ||
705 | static int | |
706 | acpi_video_cmp_level(const void *a, const void *b) | |
707 | { | |
708 | return *(int *)a - *(int *)b; | |
709 | } | |
710 | ||
1da177e4 LT |
711 | /* |
712 | * Arg: | |
713 | * device : video output device (LCD, CRT, ..) | |
714 | * | |
715 | * Return Value: | |
469778c1 JJ |
716 | * Maximum brightness level |
717 | * | |
718 | * Allocate and initialize device->brightness. | |
719 | */ | |
720 | ||
721 | static int | |
722 | acpi_video_init_brightness(struct acpi_video_device *device) | |
723 | { | |
724 | union acpi_object *obj = NULL; | |
d32f6947 | 725 | int i, max_level = 0, count = 0, level_ac_battery = 0; |
1a7c618a | 726 | unsigned long long level, level_old; |
469778c1 JJ |
727 | union acpi_object *o; |
728 | struct acpi_video_device_brightness *br = NULL; | |
1a7c618a | 729 | int result = -EINVAL; |
469778c1 JJ |
730 | |
731 | if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { | |
732 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available " | |
733 | "LCD brightness level\n")); | |
734 | goto out; | |
735 | } | |
736 | ||
737 | if (obj->package.count < 2) | |
738 | goto out; | |
739 | ||
740 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
741 | if (!br) { | |
742 | printk(KERN_ERR "can't allocate memory\n"); | |
1a7c618a | 743 | result = -ENOMEM; |
469778c1 JJ |
744 | goto out; |
745 | } | |
746 | ||
d32f6947 | 747 | br->levels = kmalloc((obj->package.count + 2) * sizeof *(br->levels), |
469778c1 | 748 | GFP_KERNEL); |
1a7c618a ZR |
749 | if (!br->levels) { |
750 | result = -ENOMEM; | |
469778c1 | 751 | goto out_free; |
1a7c618a | 752 | } |
469778c1 JJ |
753 | |
754 | for (i = 0; i < obj->package.count; i++) { | |
755 | o = (union acpi_object *)&obj->package.elements[i]; | |
756 | if (o->type != ACPI_TYPE_INTEGER) { | |
757 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
758 | continue; | |
759 | } | |
760 | br->levels[count] = (u32) o->integer.value; | |
761 | ||
762 | if (br->levels[count] > max_level) | |
763 | max_level = br->levels[count]; | |
764 | count++; | |
765 | } | |
766 | ||
d32f6947 ZR |
767 | /* |
768 | * some buggy BIOS don't export the levels | |
769 | * when machine is on AC/Battery in _BCL package. | |
770 | * In this case, the first two elements in _BCL packages | |
771 | * are also supported brightness levels that OS should take care of. | |
772 | */ | |
773 | for (i = 2; i < count; i++) | |
774 | if (br->levels[i] == br->levels[0] || | |
775 | br->levels[i] == br->levels[1]) | |
776 | level_ac_battery++; | |
777 | ||
778 | if (level_ac_battery < 2) { | |
779 | level_ac_battery = 2 - level_ac_battery; | |
780 | br->flags._BCL_no_ac_battery_levels = 1; | |
781 | for (i = (count - 1 + level_ac_battery); i >= 2; i--) | |
782 | br->levels[i] = br->levels[i - level_ac_battery]; | |
783 | count += level_ac_battery; | |
784 | } else if (level_ac_battery > 2) | |
785 | ACPI_ERROR((AE_INFO, "Too many duplicates in _BCL package\n")); | |
786 | ||
d80fb99f ZR |
787 | /* Check if the _BCL package is in a reversed order */ |
788 | if (max_level == br->levels[2]) { | |
789 | br->flags._BCL_reversed = 1; | |
790 | sort(&br->levels[2], count - 2, sizeof(br->levels[2]), | |
791 | acpi_video_cmp_level, NULL); | |
792 | } else if (max_level != br->levels[count - 1]) | |
793 | ACPI_ERROR((AE_INFO, | |
794 | "Found unordered _BCL package\n")); | |
469778c1 JJ |
795 | |
796 | br->count = count; | |
797 | device->brightness = br; | |
1a7c618a ZR |
798 | |
799 | /* Check the input/output of _BQC/_BCL/_BCM */ | |
800 | if ((max_level < 100) && (max_level <= (count - 2))) | |
801 | br->flags._BCL_use_index = 1; | |
802 | ||
803 | /* | |
804 | * _BCM is always consistent with _BCL, | |
805 | * at least for all the laptops we have ever seen. | |
806 | */ | |
807 | br->flags._BCM_use_index = br->flags._BCL_use_index; | |
808 | ||
809 | /* _BQC uses INDEX while _BCL uses VALUE in some laptops */ | |
810 | br->curr = max_level; | |
811 | result = acpi_video_device_lcd_get_level_current(device, &level_old); | |
812 | if (result) | |
813 | goto out_free_levels; | |
814 | ||
815 | result = acpi_video_device_lcd_set_level(device, br->curr); | |
816 | if (result) | |
817 | goto out_free_levels; | |
818 | ||
819 | result = acpi_video_device_lcd_get_level_current(device, &level); | |
820 | if (result) | |
821 | goto out_free_levels; | |
822 | ||
823 | if ((level != level_old) && !br->flags._BCM_use_index) { | |
824 | /* Note: | |
825 | * This piece of code does not work correctly if the current | |
826 | * brightness levels is 0. | |
827 | * But I guess boxes that boot with such a dark screen are rare | |
828 | * and no more code is needed to cover this specifial case. | |
829 | */ | |
830 | ||
831 | if (level_ac_battery != 2) { | |
832 | /* | |
833 | * For now, we don't support the _BCL like this: | |
834 | * 16, 15, 0, 1, 2, 3, ..., 14, 15, 16 | |
835 | * because we may mess up the index returned by _BQC. | |
836 | * Plus: we have not got a box like this. | |
837 | */ | |
838 | ACPI_ERROR((AE_INFO, "_BCL not supported\n")); | |
839 | } | |
840 | br->flags._BQC_use_index = 1; | |
841 | } | |
842 | ||
d32f6947 ZR |
843 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
844 | "found %d brightness levels\n", count - 2)); | |
469778c1 | 845 | kfree(obj); |
1a7c618a | 846 | return result; |
469778c1 JJ |
847 | |
848 | out_free_levels: | |
849 | kfree(br->levels); | |
850 | out_free: | |
851 | kfree(br); | |
852 | out: | |
853 | device->brightness = NULL; | |
854 | kfree(obj); | |
1a7c618a | 855 | return result; |
469778c1 JJ |
856 | } |
857 | ||
858 | /* | |
859 | * Arg: | |
860 | * device : video output device (LCD, CRT, ..) | |
861 | * | |
862 | * Return Value: | |
1da177e4 LT |
863 | * None |
864 | * | |
98fb8fe1 | 865 | * Find out all required AML methods defined under the output |
1da177e4 LT |
866 | * device. |
867 | */ | |
868 | ||
4be44fcd | 869 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 870 | { |
1da177e4 | 871 | acpi_handle h_dummy1; |
1da177e4 | 872 | |
1da177e4 | 873 | |
98934def | 874 | memset(&device->cap, 0, sizeof(device->cap)); |
1da177e4 | 875 | |
90130268 | 876 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
877 | device->cap._ADR = 1; |
878 | } | |
90130268 | 879 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 880 | device->cap._BCL = 1; |
1da177e4 | 881 | } |
90130268 | 882 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 883 | device->cap._BCM = 1; |
1da177e4 | 884 | } |
2f3d000a YL |
885 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
886 | device->cap._BQC = 1; | |
c60d638e ZR |
887 | else if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCQ", |
888 | &h_dummy1))) { | |
889 | printk(KERN_WARNING FW_BUG "_BCQ is used instead of _BQC\n"); | |
890 | device->cap._BCQ = 1; | |
891 | } | |
892 | ||
90130268 | 893 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 894 | device->cap._DDC = 1; |
1da177e4 | 895 | } |
90130268 | 896 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
897 | device->cap._DCS = 1; |
898 | } | |
90130268 | 899 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
900 | device->cap._DGS = 1; |
901 | } | |
90130268 | 902 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
903 | device->cap._DSS = 1; |
904 | } | |
905 | ||
1a7c618a | 906 | if (acpi_video_backlight_support()) { |
702ed512 | 907 | int result; |
2f3d000a YL |
908 | static int count = 0; |
909 | char *name; | |
1a7c618a ZR |
910 | |
911 | result = acpi_video_init_brightness(device); | |
912 | if (result) | |
913 | return; | |
2f3d000a YL |
914 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
915 | if (!name) | |
916 | return; | |
917 | ||
2f3d000a | 918 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 919 | device->backlight = backlight_device_register(name, |
599a52d1 | 920 | NULL, device, &acpi_backlight_ops); |
38531e6f | 921 | device->backlight->props.max_brightness = device->brightness->count-3; |
2f3d000a | 922 | kfree(name); |
702ed512 ZR |
923 | |
924 | device->cdev = thermal_cooling_device_register("LCD", | |
925 | device->dev, &video_cooling_ops); | |
43ff39f2 TS |
926 | if (IS_ERR(device->cdev)) |
927 | return; | |
928 | ||
fc3a8828 GKH |
929 | dev_info(&device->dev->dev, "registered as cooling_device%d\n", |
930 | device->cdev->id); | |
9030062f JL |
931 | result = sysfs_create_link(&device->dev->dev.kobj, |
932 | &device->cdev->device.kobj, | |
933 | "thermal_cooling"); | |
934 | if (result) | |
935 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
936 | result = sysfs_create_link(&device->cdev->device.kobj, | |
937 | &device->dev->dev.kobj, "device"); | |
938 | if (result) | |
939 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
940 | ||
2f3d000a | 941 | } |
c3d6de69 TR |
942 | |
943 | if (acpi_video_display_switch_support()) { | |
944 | ||
945 | if (device->cap._DCS && device->cap._DSS) { | |
946 | static int count; | |
947 | char *name; | |
948 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
949 | if (!name) | |
950 | return; | |
951 | sprintf(name, "acpi_video%d", count++); | |
952 | device->output_dev = video_output_register(name, | |
953 | NULL, device, &acpi_output_properties); | |
954 | kfree(name); | |
955 | } | |
23b0f015 | 956 | } |
1da177e4 LT |
957 | } |
958 | ||
959 | /* | |
960 | * Arg: | |
961 | * device : video output device (VGA) | |
962 | * | |
963 | * Return Value: | |
964 | * None | |
965 | * | |
98fb8fe1 | 966 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
967 | */ |
968 | ||
4be44fcd | 969 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 970 | { |
4be44fcd | 971 | acpi_handle h_dummy1; |
1da177e4 | 972 | |
98934def | 973 | memset(&video->cap, 0, sizeof(video->cap)); |
90130268 | 974 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
975 | video->cap._DOS = 1; |
976 | } | |
90130268 | 977 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
978 | video->cap._DOD = 1; |
979 | } | |
90130268 | 980 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
981 | video->cap._ROM = 1; |
982 | } | |
90130268 | 983 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
984 | video->cap._GPD = 1; |
985 | } | |
90130268 | 986 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
987 | video->cap._SPD = 1; |
988 | } | |
90130268 | 989 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
990 | video->cap._VPO = 1; |
991 | } | |
992 | } | |
993 | ||
994 | /* | |
995 | * Check whether the video bus device has required AML method to | |
996 | * support the desired features | |
997 | */ | |
998 | ||
4be44fcd | 999 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 1000 | { |
4be44fcd | 1001 | acpi_status status = -ENOENT; |
22c13f9d | 1002 | struct device *dev; |
1da177e4 LT |
1003 | |
1004 | if (!video) | |
d550d98d | 1005 | return -EINVAL; |
1da177e4 | 1006 | |
22c13f9d TR |
1007 | dev = acpi_get_physical_pci_device(video->device->handle); |
1008 | if (!dev) | |
1009 | return -ENODEV; | |
1010 | put_device(dev); | |
1011 | ||
1da177e4 LT |
1012 | /* Since there is no HID, CID and so on for VGA driver, we have |
1013 | * to check well known required nodes. | |
1014 | */ | |
1015 | ||
98fb8fe1 | 1016 | /* Does this device support video switching? */ |
4be44fcd | 1017 | if (video->cap._DOS) { |
1da177e4 LT |
1018 | video->flags.multihead = 1; |
1019 | status = 0; | |
1020 | } | |
1021 | ||
98fb8fe1 | 1022 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 1023 | if (video->cap._ROM) { |
1da177e4 LT |
1024 | video->flags.rom = 1; |
1025 | status = 0; | |
1026 | } | |
1027 | ||
98fb8fe1 | 1028 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 1029 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
1030 | video->flags.post = 1; |
1031 | status = 0; | |
1032 | } | |
1033 | ||
d550d98d | 1034 | return status; |
1da177e4 LT |
1035 | } |
1036 | ||
1037 | /* -------------------------------------------------------------------------- | |
1038 | FS Interface (/proc) | |
1039 | -------------------------------------------------------------------------- */ | |
1040 | ||
4be44fcd | 1041 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
1042 | |
1043 | /* video devices */ | |
1044 | ||
4be44fcd | 1045 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1046 | { |
50dd0969 | 1047 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 1048 | |
1da177e4 LT |
1049 | |
1050 | if (!dev) | |
1051 | goto end; | |
1052 | ||
1053 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
1054 | seq_printf(seq, "type: "); | |
1055 | if (dev->flags.crt) | |
1056 | seq_printf(seq, "CRT\n"); | |
1057 | else if (dev->flags.lcd) | |
1058 | seq_printf(seq, "LCD\n"); | |
1059 | else if (dev->flags.tvout) | |
1060 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
1061 | else if (dev->flags.dvi) |
1062 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
1063 | else |
1064 | seq_printf(seq, "UNKNOWN\n"); | |
1065 | ||
4be44fcd | 1066 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 1067 | |
4be44fcd | 1068 | end: |
d550d98d | 1069 | return 0; |
1da177e4 LT |
1070 | } |
1071 | ||
1072 | static int | |
4be44fcd | 1073 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1074 | { |
1075 | return single_open(file, acpi_video_device_info_seq_show, | |
1076 | PDE(inode)->data); | |
1077 | } | |
1078 | ||
4be44fcd | 1079 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1080 | { |
4be44fcd | 1081 | int status; |
50dd0969 | 1082 | struct acpi_video_device *dev = seq->private; |
27663c58 | 1083 | unsigned long long state; |
1da177e4 | 1084 | |
1da177e4 LT |
1085 | |
1086 | if (!dev) | |
1087 | goto end; | |
1088 | ||
1089 | status = acpi_video_device_get_state(dev, &state); | |
1090 | seq_printf(seq, "state: "); | |
1091 | if (ACPI_SUCCESS(status)) | |
27663c58 | 1092 | seq_printf(seq, "0x%02llx\n", state); |
1da177e4 LT |
1093 | else |
1094 | seq_printf(seq, "<not supported>\n"); | |
1095 | ||
1096 | status = acpi_video_device_query(dev, &state); | |
1097 | seq_printf(seq, "query: "); | |
1098 | if (ACPI_SUCCESS(status)) | |
27663c58 | 1099 | seq_printf(seq, "0x%02llx\n", state); |
1da177e4 LT |
1100 | else |
1101 | seq_printf(seq, "<not supported>\n"); | |
1102 | ||
4be44fcd | 1103 | end: |
d550d98d | 1104 | return 0; |
1da177e4 LT |
1105 | } |
1106 | ||
1107 | static int | |
4be44fcd | 1108 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1109 | { |
1110 | return single_open(file, acpi_video_device_state_seq_show, | |
1111 | PDE(inode)->data); | |
1112 | } | |
1113 | ||
1114 | static ssize_t | |
4be44fcd LB |
1115 | acpi_video_device_write_state(struct file *file, |
1116 | const char __user * buffer, | |
1117 | size_t count, loff_t * data) | |
1da177e4 | 1118 | { |
4be44fcd | 1119 | int status; |
50dd0969 JE |
1120 | struct seq_file *m = file->private_data; |
1121 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
1122 | char str[12] = { 0 }; |
1123 | u32 state = 0; | |
1da177e4 | 1124 | |
1da177e4 LT |
1125 | |
1126 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 1127 | return -EINVAL; |
1da177e4 LT |
1128 | |
1129 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1130 | return -EFAULT; |
1da177e4 LT |
1131 | |
1132 | str[count] = 0; | |
1133 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1134 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
1135 | |
1136 | status = acpi_video_device_set_state(dev, state); | |
1137 | ||
1138 | if (status) | |
d550d98d | 1139 | return -EFAULT; |
1da177e4 | 1140 | |
d550d98d | 1141 | return count; |
1da177e4 LT |
1142 | } |
1143 | ||
1144 | static int | |
4be44fcd | 1145 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1146 | { |
50dd0969 | 1147 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 1148 | int i; |
1da177e4 | 1149 | |
1da177e4 LT |
1150 | |
1151 | if (!dev || !dev->brightness) { | |
1152 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 1153 | return 0; |
1da177e4 LT |
1154 | } |
1155 | ||
1156 | seq_printf(seq, "levels: "); | |
0a3db1ce | 1157 | for (i = 2; i < dev->brightness->count; i++) |
1da177e4 LT |
1158 | seq_printf(seq, " %d", dev->brightness->levels[i]); |
1159 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
1160 | ||
d550d98d | 1161 | return 0; |
1da177e4 LT |
1162 | } |
1163 | ||
1164 | static int | |
4be44fcd | 1165 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1166 | { |
1167 | return single_open(file, acpi_video_device_brightness_seq_show, | |
1168 | PDE(inode)->data); | |
1169 | } | |
1170 | ||
1171 | static ssize_t | |
4be44fcd LB |
1172 | acpi_video_device_write_brightness(struct file *file, |
1173 | const char __user * buffer, | |
1174 | size_t count, loff_t * data) | |
1da177e4 | 1175 | { |
50dd0969 JE |
1176 | struct seq_file *m = file->private_data; |
1177 | struct acpi_video_device *dev = m->private; | |
c88c5786 | 1178 | char str[5] = { 0 }; |
4be44fcd LB |
1179 | unsigned int level = 0; |
1180 | int i; | |
1da177e4 | 1181 | |
1da177e4 | 1182 | |
59d399d3 | 1183 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 1184 | return -EINVAL; |
1da177e4 LT |
1185 | |
1186 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1187 | return -EFAULT; |
1da177e4 LT |
1188 | |
1189 | str[count] = 0; | |
1190 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1191 | |
1da177e4 | 1192 | if (level > 100) |
d550d98d | 1193 | return -EFAULT; |
1da177e4 | 1194 | |
98fb8fe1 | 1195 | /* validate through the list of available levels */ |
0a3db1ce | 1196 | for (i = 2; i < dev->brightness->count; i++) |
1da177e4 | 1197 | if (level == dev->brightness->levels[i]) { |
24450c7a ZR |
1198 | if (!acpi_video_device_lcd_set_level(dev, level)) |
1199 | return count; | |
1da177e4 LT |
1200 | break; |
1201 | } | |
1202 | ||
24450c7a | 1203 | return -EINVAL; |
1da177e4 LT |
1204 | } |
1205 | ||
4be44fcd | 1206 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1207 | { |
50dd0969 | 1208 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
1209 | int status; |
1210 | int i; | |
1211 | union acpi_object *edid = NULL; | |
1da177e4 | 1212 | |
1da177e4 LT |
1213 | |
1214 | if (!dev) | |
1215 | goto out; | |
1216 | ||
4be44fcd | 1217 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 1218 | if (ACPI_FAILURE(status)) { |
4be44fcd | 1219 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
1220 | } |
1221 | ||
1222 | if (ACPI_FAILURE(status)) { | |
1223 | goto out; | |
1224 | } | |
1225 | ||
1226 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
1227 | for (i = 0; i < edid->buffer.length; i++) | |
1228 | seq_putc(seq, edid->buffer.pointer[i]); | |
1229 | } | |
1230 | ||
4be44fcd | 1231 | out: |
1da177e4 LT |
1232 | if (!edid) |
1233 | seq_printf(seq, "<not supported>\n"); | |
1234 | else | |
1235 | kfree(edid); | |
1236 | ||
d550d98d | 1237 | return 0; |
1da177e4 LT |
1238 | } |
1239 | ||
1240 | static int | |
4be44fcd | 1241 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1242 | { |
1243 | return single_open(file, acpi_video_device_EDID_seq_show, | |
1244 | PDE(inode)->data); | |
1245 | } | |
1246 | ||
4be44fcd | 1247 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 1248 | { |
251cb0bc | 1249 | struct proc_dir_entry *entry, *device_dir; |
1da177e4 LT |
1250 | struct acpi_video_device *vid_dev; |
1251 | ||
50dd0969 | 1252 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1253 | if (!vid_dev) |
d550d98d | 1254 | return -ENODEV; |
1da177e4 | 1255 | |
251cb0bc DT |
1256 | device_dir = proc_mkdir(acpi_device_bid(device), |
1257 | vid_dev->video->dir); | |
1258 | if (!device_dir) | |
1259 | return -ENOMEM; | |
1260 | ||
1da177e4 | 1261 | /* 'info' [R] */ |
e0066c4e | 1262 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab | 1263 | &acpi_video_device_info_fops, acpi_driver_data(device)); |
1da177e4 | 1264 | if (!entry) |
251cb0bc | 1265 | goto err_remove_dir; |
1da177e4 LT |
1266 | |
1267 | /* 'state' [R/W] */ | |
cf7acfab | 1268 | entry = proc_create_data("state", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1269 | device_dir, |
cf7acfab DL |
1270 | &acpi_video_device_state_fops, |
1271 | acpi_driver_data(device)); | |
1da177e4 | 1272 | if (!entry) |
251cb0bc | 1273 | goto err_remove_info; |
1da177e4 LT |
1274 | |
1275 | /* 'brightness' [R/W] */ | |
cf7acfab | 1276 | entry = proc_create_data("brightness", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1277 | device_dir, |
cf7acfab DL |
1278 | &acpi_video_device_brightness_fops, |
1279 | acpi_driver_data(device)); | |
1da177e4 | 1280 | if (!entry) |
251cb0bc | 1281 | goto err_remove_state; |
1da177e4 LT |
1282 | |
1283 | /* 'EDID' [R] */ | |
e0066c4e | 1284 | entry = proc_create_data("EDID", S_IRUGO, device_dir, |
cf7acfab DL |
1285 | &acpi_video_device_EDID_fops, |
1286 | acpi_driver_data(device)); | |
1da177e4 | 1287 | if (!entry) |
251cb0bc | 1288 | goto err_remove_brightness; |
1da177e4 | 1289 | |
e0066c4e AD |
1290 | acpi_device_dir(device) = device_dir; |
1291 | ||
d550d98d | 1292 | return 0; |
251cb0bc DT |
1293 | |
1294 | err_remove_brightness: | |
1295 | remove_proc_entry("brightness", device_dir); | |
1296 | err_remove_state: | |
1297 | remove_proc_entry("state", device_dir); | |
1298 | err_remove_info: | |
1299 | remove_proc_entry("info", device_dir); | |
1300 | err_remove_dir: | |
1301 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); | |
1302 | return -ENOMEM; | |
1da177e4 LT |
1303 | } |
1304 | ||
4be44fcd | 1305 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1306 | { |
1307 | struct acpi_video_device *vid_dev; | |
251cb0bc | 1308 | struct proc_dir_entry *device_dir; |
1da177e4 | 1309 | |
50dd0969 | 1310 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1311 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 1312 | return -ENODEV; |
1da177e4 | 1313 | |
251cb0bc DT |
1314 | device_dir = acpi_device_dir(device); |
1315 | if (device_dir) { | |
1316 | remove_proc_entry("info", device_dir); | |
1317 | remove_proc_entry("state", device_dir); | |
1318 | remove_proc_entry("brightness", device_dir); | |
1319 | remove_proc_entry("EDID", device_dir); | |
4be44fcd | 1320 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1321 | acpi_device_dir(device) = NULL; |
1322 | } | |
1323 | ||
d550d98d | 1324 | return 0; |
1da177e4 LT |
1325 | } |
1326 | ||
1da177e4 | 1327 | /* video bus */ |
4be44fcd | 1328 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1329 | { |
50dd0969 | 1330 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1331 | |
1da177e4 LT |
1332 | |
1333 | if (!video) | |
1334 | goto end; | |
1335 | ||
1336 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1337 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1338 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1339 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1340 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1341 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1342 | |
4be44fcd | 1343 | end: |
d550d98d | 1344 | return 0; |
1da177e4 LT |
1345 | } |
1346 | ||
4be44fcd | 1347 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1348 | { |
4be44fcd LB |
1349 | return single_open(file, acpi_video_bus_info_seq_show, |
1350 | PDE(inode)->data); | |
1da177e4 LT |
1351 | } |
1352 | ||
4be44fcd | 1353 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1354 | { |
50dd0969 | 1355 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1356 | |
1da177e4 LT |
1357 | |
1358 | if (!video) | |
1359 | goto end; | |
1360 | ||
96b2dd1f | 1361 | printk(KERN_INFO PREFIX "Please implement %s\n", __func__); |
1da177e4 LT |
1362 | seq_printf(seq, "<TODO>\n"); |
1363 | ||
4be44fcd | 1364 | end: |
d550d98d | 1365 | return 0; |
1da177e4 LT |
1366 | } |
1367 | ||
4be44fcd | 1368 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1369 | { |
1370 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1371 | } | |
1372 | ||
4be44fcd | 1373 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1374 | { |
50dd0969 | 1375 | struct acpi_video_bus *video = seq->private; |
27663c58 | 1376 | unsigned long long options; |
4be44fcd | 1377 | int status; |
1da177e4 | 1378 | |
1da177e4 LT |
1379 | |
1380 | if (!video) | |
1381 | goto end; | |
1382 | ||
1383 | status = acpi_video_bus_POST_options(video, &options); | |
1384 | if (ACPI_SUCCESS(status)) { | |
1385 | if (!(options & 1)) { | |
4be44fcd LB |
1386 | printk(KERN_WARNING PREFIX |
1387 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1388 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1389 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 | 1390 | } |
4d939155 | 1391 | printk(KERN_WARNING "%llx\n", options); |
98fb8fe1 | 1392 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1393 | if (options & 2) |
1394 | seq_printf(seq, " <PCI video>"); | |
1395 | if (options & 4) | |
1396 | seq_printf(seq, " <AGP video>"); | |
1397 | seq_putc(seq, '\n'); | |
1398 | } else | |
1399 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1400 | end: |
d550d98d | 1401 | return 0; |
1da177e4 LT |
1402 | } |
1403 | ||
1404 | static int | |
4be44fcd | 1405 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1406 | { |
4be44fcd LB |
1407 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1408 | PDE(inode)->data); | |
1da177e4 LT |
1409 | } |
1410 | ||
4be44fcd | 1411 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1412 | { |
50dd0969 | 1413 | struct acpi_video_bus *video = seq->private; |
4be44fcd | 1414 | int status; |
27663c58 | 1415 | unsigned long long id; |
1da177e4 | 1416 | |
1da177e4 LT |
1417 | |
1418 | if (!video) | |
1419 | goto end; | |
1420 | ||
4be44fcd | 1421 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1422 | if (!ACPI_SUCCESS(status)) { |
1423 | seq_printf(seq, "<not supported>\n"); | |
1424 | goto end; | |
1425 | } | |
98fb8fe1 | 1426 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1427 | |
4be44fcd | 1428 | end: |
d550d98d | 1429 | return 0; |
1da177e4 LT |
1430 | } |
1431 | ||
4be44fcd | 1432 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1433 | { |
50dd0969 | 1434 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1435 | |
1da177e4 | 1436 | |
4be44fcd | 1437 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1438 | |
d550d98d | 1439 | return 0; |
1da177e4 LT |
1440 | } |
1441 | ||
4be44fcd | 1442 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1443 | { |
4be44fcd LB |
1444 | return single_open(file, acpi_video_bus_POST_seq_show, |
1445 | PDE(inode)->data); | |
1da177e4 LT |
1446 | } |
1447 | ||
4be44fcd | 1448 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1449 | { |
1450 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1451 | } | |
1452 | ||
1453 | static ssize_t | |
4be44fcd LB |
1454 | acpi_video_bus_write_POST(struct file *file, |
1455 | const char __user * buffer, | |
1456 | size_t count, loff_t * data) | |
1da177e4 | 1457 | { |
4be44fcd | 1458 | int status; |
50dd0969 JE |
1459 | struct seq_file *m = file->private_data; |
1460 | struct acpi_video_bus *video = m->private; | |
4be44fcd | 1461 | char str[12] = { 0 }; |
27663c58 | 1462 | unsigned long long opt, options; |
1da177e4 | 1463 | |
1da177e4 | 1464 | |
1da177e4 | 1465 | if (!video || count + 1 > sizeof str) |
d550d98d | 1466 | return -EINVAL; |
1da177e4 LT |
1467 | |
1468 | status = acpi_video_bus_POST_options(video, &options); | |
1469 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1470 | return -EINVAL; |
1da177e4 LT |
1471 | |
1472 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1473 | return -EFAULT; |
1da177e4 LT |
1474 | |
1475 | str[count] = 0; | |
1476 | opt = strtoul(str, NULL, 0); | |
1477 | if (opt > 3) | |
d550d98d | 1478 | return -EFAULT; |
1da177e4 | 1479 | |
98fb8fe1 | 1480 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1481 | options |= 1; |
1482 | ||
1483 | if (options & (1ul << opt)) { | |
4be44fcd | 1484 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1485 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1486 | return -EFAULT; |
1da177e4 LT |
1487 | |
1488 | } | |
1489 | ||
d550d98d | 1490 | return count; |
1da177e4 LT |
1491 | } |
1492 | ||
1493 | static ssize_t | |
4be44fcd LB |
1494 | acpi_video_bus_write_DOS(struct file *file, |
1495 | const char __user * buffer, | |
1496 | size_t count, loff_t * data) | |
1da177e4 | 1497 | { |
4be44fcd | 1498 | int status; |
50dd0969 JE |
1499 | struct seq_file *m = file->private_data; |
1500 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1501 | char str[12] = { 0 }; |
1502 | unsigned long opt; | |
1da177e4 | 1503 | |
1da177e4 | 1504 | |
1da177e4 | 1505 | if (!video || count + 1 > sizeof str) |
d550d98d | 1506 | return -EINVAL; |
1da177e4 LT |
1507 | |
1508 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1509 | return -EFAULT; |
1da177e4 LT |
1510 | |
1511 | str[count] = 0; | |
1512 | opt = strtoul(str, NULL, 0); | |
1513 | if (opt > 7) | |
d550d98d | 1514 | return -EFAULT; |
1da177e4 | 1515 | |
4be44fcd | 1516 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1517 | |
1518 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1519 | return -EFAULT; |
1da177e4 | 1520 | |
d550d98d | 1521 | return count; |
1da177e4 LT |
1522 | } |
1523 | ||
4be44fcd | 1524 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1525 | { |
251cb0bc DT |
1526 | struct acpi_video_bus *video = acpi_driver_data(device); |
1527 | struct proc_dir_entry *device_dir; | |
1528 | struct proc_dir_entry *entry; | |
1da177e4 | 1529 | |
251cb0bc DT |
1530 | device_dir = proc_mkdir(acpi_device_bid(device), acpi_video_dir); |
1531 | if (!device_dir) | |
1532 | return -ENOMEM; | |
1da177e4 | 1533 | |
1da177e4 | 1534 | /* 'info' [R] */ |
e0066c4e | 1535 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab DL |
1536 | &acpi_video_bus_info_fops, |
1537 | acpi_driver_data(device)); | |
1da177e4 | 1538 | if (!entry) |
251cb0bc | 1539 | goto err_remove_dir; |
1da177e4 LT |
1540 | |
1541 | /* 'ROM' [R] */ | |
e0066c4e | 1542 | entry = proc_create_data("ROM", S_IRUGO, device_dir, |
cf7acfab DL |
1543 | &acpi_video_bus_ROM_fops, |
1544 | acpi_driver_data(device)); | |
1da177e4 | 1545 | if (!entry) |
251cb0bc | 1546 | goto err_remove_info; |
1da177e4 LT |
1547 | |
1548 | /* 'POST_info' [R] */ | |
e0066c4e | 1549 | entry = proc_create_data("POST_info", S_IRUGO, device_dir, |
cf7acfab DL |
1550 | &acpi_video_bus_POST_info_fops, |
1551 | acpi_driver_data(device)); | |
1da177e4 | 1552 | if (!entry) |
251cb0bc | 1553 | goto err_remove_rom; |
1da177e4 LT |
1554 | |
1555 | /* 'POST' [R/W] */ | |
08acd4f8 | 1556 | entry = proc_create_data("POST", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1557 | device_dir, |
cf7acfab DL |
1558 | &acpi_video_bus_POST_fops, |
1559 | acpi_driver_data(device)); | |
1da177e4 | 1560 | if (!entry) |
251cb0bc | 1561 | goto err_remove_post_info; |
1da177e4 LT |
1562 | |
1563 | /* 'DOS' [R/W] */ | |
08acd4f8 | 1564 | entry = proc_create_data("DOS", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1565 | device_dir, |
cf7acfab DL |
1566 | &acpi_video_bus_DOS_fops, |
1567 | acpi_driver_data(device)); | |
1da177e4 | 1568 | if (!entry) |
251cb0bc | 1569 | goto err_remove_post; |
1da177e4 | 1570 | |
251cb0bc | 1571 | video->dir = acpi_device_dir(device) = device_dir; |
d550d98d | 1572 | return 0; |
251cb0bc DT |
1573 | |
1574 | err_remove_post: | |
1575 | remove_proc_entry("POST", device_dir); | |
1576 | err_remove_post_info: | |
1577 | remove_proc_entry("POST_info", device_dir); | |
1578 | err_remove_rom: | |
1579 | remove_proc_entry("ROM", device_dir); | |
1580 | err_remove_info: | |
1581 | remove_proc_entry("info", device_dir); | |
1582 | err_remove_dir: | |
1583 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); | |
1584 | return -ENOMEM; | |
1da177e4 LT |
1585 | } |
1586 | ||
4be44fcd | 1587 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1588 | { |
251cb0bc DT |
1589 | struct proc_dir_entry *device_dir = acpi_device_dir(device); |
1590 | ||
1591 | if (device_dir) { | |
1592 | remove_proc_entry("info", device_dir); | |
1593 | remove_proc_entry("ROM", device_dir); | |
1594 | remove_proc_entry("POST_info", device_dir); | |
1595 | remove_proc_entry("POST", device_dir); | |
1596 | remove_proc_entry("DOS", device_dir); | |
4be44fcd | 1597 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1598 | acpi_device_dir(device) = NULL; |
1599 | } | |
1600 | ||
d550d98d | 1601 | return 0; |
1da177e4 LT |
1602 | } |
1603 | ||
1604 | /* -------------------------------------------------------------------------- | |
1605 | Driver Interface | |
1606 | -------------------------------------------------------------------------- */ | |
1607 | ||
1608 | /* device interface */ | |
82cae999 RZ |
1609 | static struct acpi_video_device_attrib* |
1610 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1611 | { | |
78eed028 DT |
1612 | struct acpi_video_enumerated_device *ids; |
1613 | int i; | |
1614 | ||
1615 | for (i = 0; i < video->attached_count; i++) { | |
1616 | ids = &video->attached_array[i]; | |
1617 | if ((ids->value.int_val & 0xffff) == device_id) | |
1618 | return &ids->value.attrib; | |
1619 | } | |
82cae999 | 1620 | |
82cae999 RZ |
1621 | return NULL; |
1622 | } | |
1da177e4 LT |
1623 | |
1624 | static int | |
4be44fcd LB |
1625 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1626 | struct acpi_video_bus *video) | |
1da177e4 | 1627 | { |
27663c58 | 1628 | unsigned long long device_id; |
973bf491 | 1629 | int status; |
4be44fcd | 1630 | struct acpi_video_device *data; |
82cae999 | 1631 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1632 | |
1633 | if (!device || !video) | |
d550d98d | 1634 | return -EINVAL; |
1da177e4 | 1635 | |
4be44fcd LB |
1636 | status = |
1637 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1638 | if (ACPI_SUCCESS(status)) { |
1639 | ||
36bcbec7 | 1640 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1641 | if (!data) |
d550d98d | 1642 | return -ENOMEM; |
1da177e4 | 1643 | |
1da177e4 LT |
1644 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1645 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 1646 | device->driver_data = data; |
1da177e4 LT |
1647 | |
1648 | data->device_id = device_id; | |
1649 | data->video = video; | |
1650 | data->dev = device; | |
1651 | ||
82cae999 RZ |
1652 | attribute = acpi_video_get_device_attr(video, device_id); |
1653 | ||
1654 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1655 | switch (attribute->display_type) { | |
1656 | case ACPI_VIDEO_DISPLAY_CRT: | |
1657 | data->flags.crt = 1; | |
1658 | break; | |
1659 | case ACPI_VIDEO_DISPLAY_TV: | |
1660 | data->flags.tvout = 1; | |
1661 | break; | |
1662 | case ACPI_VIDEO_DISPLAY_DVI: | |
1663 | data->flags.dvi = 1; | |
1664 | break; | |
1665 | case ACPI_VIDEO_DISPLAY_LCD: | |
1666 | data->flags.lcd = 1; | |
1667 | break; | |
1668 | default: | |
1669 | data->flags.unknown = 1; | |
1670 | break; | |
1671 | } | |
1672 | if(attribute->bios_can_detect) | |
1673 | data->flags.bios = 1; | |
1674 | } else | |
1da177e4 | 1675 | data->flags.unknown = 1; |
4be44fcd | 1676 | |
1da177e4 LT |
1677 | acpi_video_device_bind(video, data); |
1678 | acpi_video_device_find_cap(data); | |
1679 | ||
90130268 | 1680 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1681 | ACPI_DEVICE_NOTIFY, |
1682 | acpi_video_device_notify, | |
1683 | data); | |
1da177e4 | 1684 | if (ACPI_FAILURE(status)) { |
55ac9a01 LM |
1685 | printk(KERN_ERR PREFIX |
1686 | "Error installing notify handler\n"); | |
973bf491 YL |
1687 | if(data->brightness) |
1688 | kfree(data->brightness->levels); | |
1689 | kfree(data->brightness); | |
1690 | kfree(data); | |
1691 | return -ENODEV; | |
1da177e4 LT |
1692 | } |
1693 | ||
bbac81f5 | 1694 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1695 | list_add_tail(&data->entry, &video->video_device_list); |
bbac81f5 | 1696 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1697 | |
1698 | acpi_video_device_add_fs(device); | |
1699 | ||
d550d98d | 1700 | return 0; |
1da177e4 LT |
1701 | } |
1702 | ||
d550d98d | 1703 | return -ENOENT; |
1da177e4 LT |
1704 | } |
1705 | ||
1706 | /* | |
1707 | * Arg: | |
1708 | * video : video bus device | |
1709 | * | |
1710 | * Return: | |
1711 | * none | |
1712 | * | |
1713 | * Enumerate the video device list of the video bus, | |
1714 | * bind the ids with the corresponding video devices | |
1715 | * under the video bus. | |
4be44fcd | 1716 | */ |
1da177e4 | 1717 | |
4be44fcd | 1718 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1719 | { |
ff102ea9 DT |
1720 | struct acpi_video_device *dev; |
1721 | ||
bbac81f5 | 1722 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1723 | |
1724 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1725 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1726 | |
bbac81f5 | 1727 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1728 | } |
1729 | ||
1730 | /* | |
1731 | * Arg: | |
1732 | * video : video bus device | |
1733 | * device : video output device under the video | |
1734 | * bus | |
1735 | * | |
1736 | * Return: | |
1737 | * none | |
1738 | * | |
1739 | * Bind the ids with the corresponding video devices | |
1740 | * under the video bus. | |
4be44fcd | 1741 | */ |
1da177e4 LT |
1742 | |
1743 | static void | |
4be44fcd LB |
1744 | acpi_video_device_bind(struct acpi_video_bus *video, |
1745 | struct acpi_video_device *device) | |
1da177e4 | 1746 | { |
78eed028 | 1747 | struct acpi_video_enumerated_device *ids; |
4be44fcd | 1748 | int i; |
1da177e4 | 1749 | |
78eed028 DT |
1750 | for (i = 0; i < video->attached_count; i++) { |
1751 | ids = &video->attached_array[i]; | |
1752 | if (device->device_id == (ids->value.int_val & 0xffff)) { | |
1753 | ids->bind_info = device; | |
1da177e4 LT |
1754 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); |
1755 | } | |
1756 | } | |
1da177e4 LT |
1757 | } |
1758 | ||
1759 | /* | |
1760 | * Arg: | |
1761 | * video : video bus device | |
1762 | * | |
1763 | * Return: | |
1764 | * < 0 : error | |
1765 | * | |
1766 | * Call _DOD to enumerate all devices attached to display adapter | |
1767 | * | |
4be44fcd | 1768 | */ |
1da177e4 LT |
1769 | |
1770 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1771 | { | |
4be44fcd LB |
1772 | int status; |
1773 | int count; | |
1774 | int i; | |
78eed028 | 1775 | struct acpi_video_enumerated_device *active_list; |
4be44fcd LB |
1776 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1777 | union acpi_object *dod = NULL; | |
1778 | union acpi_object *obj; | |
1da177e4 | 1779 | |
90130268 | 1780 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1781 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1782 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1783 | return status; |
1da177e4 LT |
1784 | } |
1785 | ||
50dd0969 | 1786 | dod = buffer.pointer; |
1da177e4 | 1787 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1788 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1789 | status = -EFAULT; |
1790 | goto out; | |
1791 | } | |
1792 | ||
1793 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1794 | dod->package.count)); |
1da177e4 | 1795 | |
78eed028 DT |
1796 | active_list = kcalloc(1 + dod->package.count, |
1797 | sizeof(struct acpi_video_enumerated_device), | |
1798 | GFP_KERNEL); | |
1799 | if (!active_list) { | |
1da177e4 LT |
1800 | status = -ENOMEM; |
1801 | goto out; | |
1802 | } | |
1803 | ||
1804 | count = 0; | |
1805 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1806 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1807 | |
1808 | if (obj->type != ACPI_TYPE_INTEGER) { | |
78eed028 DT |
1809 | printk(KERN_ERR PREFIX |
1810 | "Invalid _DOD data in element %d\n", i); | |
1811 | continue; | |
1da177e4 | 1812 | } |
78eed028 DT |
1813 | |
1814 | active_list[count].value.int_val = obj->integer.value; | |
1815 | active_list[count].bind_info = NULL; | |
4be44fcd LB |
1816 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1817 | (int)obj->integer.value)); | |
1da177e4 LT |
1818 | count++; |
1819 | } | |
1da177e4 | 1820 | |
6044ec88 | 1821 | kfree(video->attached_array); |
4be44fcd | 1822 | |
78eed028 | 1823 | video->attached_array = active_list; |
1da177e4 | 1824 | video->attached_count = count; |
78eed028 DT |
1825 | |
1826 | out: | |
02438d87 | 1827 | kfree(buffer.pointer); |
d550d98d | 1828 | return status; |
1da177e4 LT |
1829 | } |
1830 | ||
4be44fcd LB |
1831 | static int |
1832 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1833 | u32 level_current, u32 event) | |
1da177e4 | 1834 | { |
63f0edfc | 1835 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
1836 | max = max_below = 0; |
1837 | min = min_above = 255; | |
63f0edfc | 1838 | /* Find closest level to level_current */ |
0a3db1ce | 1839 | for (i = 2; i < device->brightness->count; i++) { |
63f0edfc AS |
1840 | l = device->brightness->levels[i]; |
1841 | if (abs(l - level_current) < abs(delta)) { | |
1842 | delta = l - level_current; | |
1843 | if (!delta) | |
1844 | break; | |
1845 | } | |
1846 | } | |
1847 | /* Ajust level_current to closest available level */ | |
1848 | level_current += delta; | |
0a3db1ce | 1849 | for (i = 2; i < device->brightness->count; i++) { |
f4715189 TT |
1850 | l = device->brightness->levels[i]; |
1851 | if (l < min) | |
1852 | min = l; | |
1853 | if (l > max) | |
1854 | max = l; | |
1855 | if (l < min_above && l > level_current) | |
1856 | min_above = l; | |
1857 | if (l > max_below && l < level_current) | |
1858 | max_below = l; | |
1859 | } | |
1860 | ||
1861 | switch (event) { | |
1862 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1863 | return (level_current < max) ? min_above : min; | |
1864 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1865 | return (level_current < max) ? min_above : max; | |
1866 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1867 | return (level_current > min) ? max_below : min; | |
1868 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1869 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1870 | return 0; | |
1871 | default: | |
1872 | return level_current; | |
1873 | } | |
1da177e4 LT |
1874 | } |
1875 | ||
c8890f90 | 1876 | static int |
4be44fcd | 1877 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 | 1878 | { |
27663c58 | 1879 | unsigned long long level_current, level_next; |
c8890f90 ZR |
1880 | int result = -EINVAL; |
1881 | ||
469778c1 | 1882 | if (!device->brightness) |
c8890f90 ZR |
1883 | goto out; |
1884 | ||
1885 | result = acpi_video_device_lcd_get_level_current(device, | |
1886 | &level_current); | |
1887 | if (result) | |
1888 | goto out; | |
1889 | ||
1da177e4 | 1890 | level_next = acpi_video_get_next_level(device, level_current, event); |
c8890f90 | 1891 | |
24450c7a | 1892 | result = acpi_video_device_lcd_set_level(device, level_next); |
c8890f90 ZR |
1893 | |
1894 | out: | |
1895 | if (result) | |
1896 | printk(KERN_ERR PREFIX "Failed to switch the brightness\n"); | |
1897 | ||
1898 | return result; | |
1da177e4 LT |
1899 | } |
1900 | ||
1901 | static int | |
4be44fcd LB |
1902 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1903 | struct acpi_device *device) | |
1da177e4 | 1904 | { |
4be44fcd | 1905 | int status = 0; |
ff102ea9 | 1906 | struct acpi_device *dev; |
1da177e4 LT |
1907 | |
1908 | acpi_video_device_enumerate(video); | |
1909 | ||
ff102ea9 | 1910 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
1911 | |
1912 | status = acpi_video_bus_get_one_device(dev, video); | |
1913 | if (ACPI_FAILURE(status)) { | |
55ac9a01 LM |
1914 | printk(KERN_WARNING PREFIX |
1915 | "Cant attach device"); | |
1da177e4 LT |
1916 | continue; |
1917 | } | |
1da177e4 | 1918 | } |
d550d98d | 1919 | return status; |
1da177e4 LT |
1920 | } |
1921 | ||
4be44fcd | 1922 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1923 | { |
031ec77b | 1924 | acpi_status status; |
1da177e4 LT |
1925 | struct acpi_video_bus *video; |
1926 | ||
1da177e4 LT |
1927 | |
1928 | if (!device || !device->video) | |
d550d98d | 1929 | return -ENOENT; |
1da177e4 LT |
1930 | |
1931 | video = device->video; | |
1932 | ||
1da177e4 LT |
1933 | acpi_video_device_remove_fs(device->dev); |
1934 | ||
90130268 | 1935 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1936 | ACPI_DEVICE_NOTIFY, |
1937 | acpi_video_device_notify); | |
599a52d1 | 1938 | backlight_device_unregister(device->backlight); |
702ed512 ZR |
1939 | if (device->cdev) { |
1940 | sysfs_remove_link(&device->dev->dev.kobj, | |
1941 | "thermal_cooling"); | |
1942 | sysfs_remove_link(&device->cdev->device.kobj, | |
1943 | "device"); | |
1944 | thermal_cooling_device_unregister(device->cdev); | |
1945 | device->cdev = NULL; | |
1946 | } | |
23b0f015 | 1947 | video_output_unregister(device->output_dev); |
ff102ea9 | 1948 | |
d550d98d | 1949 | return 0; |
1da177e4 LT |
1950 | } |
1951 | ||
4be44fcd | 1952 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1953 | { |
4be44fcd | 1954 | int status; |
ff102ea9 | 1955 | struct acpi_video_device *dev, *next; |
1da177e4 | 1956 | |
bbac81f5 | 1957 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1958 | |
ff102ea9 | 1959 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 1960 | |
ff102ea9 | 1961 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
1962 | if (ACPI_FAILURE(status)) |
1963 | printk(KERN_WARNING PREFIX | |
1964 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1965 | |
ff102ea9 DT |
1966 | if (dev->brightness) { |
1967 | kfree(dev->brightness->levels); | |
1968 | kfree(dev->brightness); | |
1969 | } | |
1970 | list_del(&dev->entry); | |
1971 | kfree(dev); | |
1da177e4 LT |
1972 | } |
1973 | ||
bbac81f5 | 1974 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1975 | |
d550d98d | 1976 | return 0; |
1da177e4 LT |
1977 | } |
1978 | ||
1979 | /* acpi_video interface */ | |
1980 | ||
4be44fcd | 1981 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 1982 | { |
a21101c4 | 1983 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
1984 | } |
1985 | ||
4be44fcd | 1986 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1987 | { |
1988 | return acpi_video_bus_DOS(video, 0, 1); | |
1989 | } | |
1990 | ||
7015558f | 1991 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event) |
1da177e4 | 1992 | { |
7015558f | 1993 | struct acpi_video_bus *video = acpi_driver_data(device); |
e9dab196 LY |
1994 | struct input_dev *input; |
1995 | int keycode; | |
1996 | ||
1da177e4 | 1997 | if (!video) |
d550d98d | 1998 | return; |
1da177e4 | 1999 | |
e9dab196 | 2000 | input = video->input; |
1da177e4 LT |
2001 | |
2002 | switch (event) { | |
98fb8fe1 | 2003 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 2004 | * most likely via hotkey. */ |
14e04fb3 | 2005 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2006 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
2007 | break; |
2008 | ||
98fb8fe1 | 2009 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
2010 | * connector. */ |
2011 | acpi_video_device_enumerate(video); | |
2012 | acpi_video_device_rebind(video); | |
14e04fb3 | 2013 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2014 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
2015 | break; |
2016 | ||
4be44fcd | 2017 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
25c87f7f | 2018 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2019 | keycode = KEY_SWITCHVIDEOMODE; |
2020 | break; | |
4be44fcd | 2021 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
25c87f7f | 2022 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2023 | keycode = KEY_VIDEO_NEXT; |
2024 | break; | |
4be44fcd | 2025 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
14e04fb3 | 2026 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2027 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
2028 | break; |
2029 | ||
2030 | default: | |
e9dab196 | 2031 | keycode = KEY_UNKNOWN; |
1da177e4 | 2032 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 2033 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
2034 | break; |
2035 | } | |
2036 | ||
7761f638 | 2037 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
2038 | input_report_key(input, keycode, 1); |
2039 | input_sync(input); | |
2040 | input_report_key(input, keycode, 0); | |
2041 | input_sync(input); | |
2042 | ||
d550d98d | 2043 | return; |
1da177e4 LT |
2044 | } |
2045 | ||
4be44fcd | 2046 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 2047 | { |
50dd0969 | 2048 | struct acpi_video_device *video_device = data; |
4be44fcd | 2049 | struct acpi_device *device = NULL; |
e9dab196 LY |
2050 | struct acpi_video_bus *bus; |
2051 | struct input_dev *input; | |
2052 | int keycode; | |
1da177e4 | 2053 | |
1da177e4 | 2054 | if (!video_device) |
d550d98d | 2055 | return; |
1da177e4 | 2056 | |
e6afa0de | 2057 | device = video_device->dev; |
e9dab196 LY |
2058 | bus = video_device->video; |
2059 | input = bus->input; | |
1da177e4 LT |
2060 | |
2061 | switch (event) { | |
4be44fcd | 2062 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
8a681a4d ZR |
2063 | if (brightness_switch_enabled) |
2064 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 2065 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2066 | keycode = KEY_BRIGHTNESS_CYCLE; |
2067 | break; | |
4be44fcd | 2068 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
8a681a4d ZR |
2069 | if (brightness_switch_enabled) |
2070 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2071 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2072 | keycode = KEY_BRIGHTNESSUP; |
2073 | break; | |
4be44fcd | 2074 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
8a681a4d ZR |
2075 | if (brightness_switch_enabled) |
2076 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2077 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2078 | keycode = KEY_BRIGHTNESSDOWN; |
2079 | break; | |
4be44fcd | 2080 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
8a681a4d ZR |
2081 | if (brightness_switch_enabled) |
2082 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2083 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2084 | keycode = KEY_BRIGHTNESS_ZERO; |
2085 | break; | |
4be44fcd | 2086 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
8a681a4d ZR |
2087 | if (brightness_switch_enabled) |
2088 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 2089 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2090 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
2091 | break; |
2092 | default: | |
e9dab196 | 2093 | keycode = KEY_UNKNOWN; |
1da177e4 | 2094 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 2095 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
2096 | break; |
2097 | } | |
e9dab196 | 2098 | |
7761f638 | 2099 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
2100 | input_report_key(input, keycode, 1); |
2101 | input_sync(input); | |
2102 | input_report_key(input, keycode, 0); | |
2103 | input_sync(input); | |
2104 | ||
d550d98d | 2105 | return; |
1da177e4 LT |
2106 | } |
2107 | ||
e6d9da1d | 2108 | static int instance; |
863c1490 MG |
2109 | static int acpi_video_resume(struct acpi_device *device) |
2110 | { | |
2111 | struct acpi_video_bus *video; | |
2112 | struct acpi_video_device *video_device; | |
2113 | int i; | |
2114 | ||
2115 | if (!device || !acpi_driver_data(device)) | |
2116 | return -EINVAL; | |
2117 | ||
2118 | video = acpi_driver_data(device); | |
2119 | ||
2120 | for (i = 0; i < video->attached_count; i++) { | |
2121 | video_device = video->attached_array[i].bind_info; | |
2122 | if (video_device && video_device->backlight) | |
2123 | acpi_video_set_brightness(video_device->backlight); | |
2124 | } | |
2125 | return AE_OK; | |
2126 | } | |
2127 | ||
4be44fcd | 2128 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 2129 | { |
f51e8391 | 2130 | struct acpi_video_bus *video; |
e9dab196 | 2131 | struct input_dev *input; |
f51e8391 | 2132 | int error; |
1da177e4 | 2133 | |
36bcbec7 | 2134 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 2135 | if (!video) |
d550d98d | 2136 | return -ENOMEM; |
1da177e4 | 2137 | |
e6d9da1d ZR |
2138 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
2139 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
2140 | if (instance) | |
2141 | device->pnp.bus_id[3] = '0' + instance; | |
2142 | instance ++; | |
2143 | } | |
f3b39f13 ZY |
2144 | /* a hack to fix the duplicate name "VGA" problem on Pa 3553 */ |
2145 | if (!strcmp(device->pnp.bus_id, "VGA")) { | |
2146 | if (instance) | |
2147 | device->pnp.bus_id[3] = '0' + instance; | |
2148 | instance++; | |
2149 | } | |
e6d9da1d | 2150 | |
e6afa0de | 2151 | video->device = device; |
1da177e4 LT |
2152 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
2153 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 2154 | device->driver_data = video; |
1da177e4 LT |
2155 | |
2156 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
2157 | error = acpi_video_bus_check(video); |
2158 | if (error) | |
2159 | goto err_free_video; | |
1da177e4 | 2160 | |
f51e8391 DT |
2161 | error = acpi_video_bus_add_fs(device); |
2162 | if (error) | |
2163 | goto err_free_video; | |
1da177e4 | 2164 | |
bbac81f5 | 2165 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
2166 | INIT_LIST_HEAD(&video->video_device_list); |
2167 | ||
2168 | acpi_video_bus_get_devices(video, device); | |
2169 | acpi_video_bus_start_devices(video); | |
2170 | ||
e9dab196 | 2171 | video->input = input = input_allocate_device(); |
f51e8391 DT |
2172 | if (!input) { |
2173 | error = -ENOMEM; | |
7015558f | 2174 | goto err_stop_video; |
f51e8391 | 2175 | } |
e9dab196 LY |
2176 | |
2177 | snprintf(video->phys, sizeof(video->phys), | |
2178 | "%s/video/input0", acpi_device_hid(video->device)); | |
2179 | ||
2180 | input->name = acpi_device_name(video->device); | |
2181 | input->phys = video->phys; | |
2182 | input->id.bustype = BUS_HOST; | |
2183 | input->id.product = 0x06; | |
91c05c66 | 2184 | input->dev.parent = &device->dev; |
e9dab196 LY |
2185 | input->evbit[0] = BIT(EV_KEY); |
2186 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
2187 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
2188 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
2189 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
2190 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
2191 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
2192 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
2193 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
2194 | set_bit(KEY_UNKNOWN, input->keybit); | |
e9dab196 | 2195 | |
f51e8391 DT |
2196 | error = input_register_device(input); |
2197 | if (error) | |
2198 | goto err_free_input_dev; | |
e9dab196 | 2199 | |
1da177e4 | 2200 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
2201 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
2202 | video->flags.multihead ? "yes" : "no", | |
2203 | video->flags.rom ? "yes" : "no", | |
2204 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 2205 | |
f51e8391 DT |
2206 | return 0; |
2207 | ||
2208 | err_free_input_dev: | |
2209 | input_free_device(input); | |
f51e8391 DT |
2210 | err_stop_video: |
2211 | acpi_video_bus_stop_devices(video); | |
2212 | acpi_video_bus_put_devices(video); | |
2213 | kfree(video->attached_array); | |
2214 | acpi_video_bus_remove_fs(device); | |
2215 | err_free_video: | |
2216 | kfree(video); | |
db89b4f0 | 2217 | device->driver_data = NULL; |
1da177e4 | 2218 | |
f51e8391 | 2219 | return error; |
1da177e4 LT |
2220 | } |
2221 | ||
4be44fcd | 2222 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 2223 | { |
4be44fcd | 2224 | struct acpi_video_bus *video = NULL; |
1da177e4 | 2225 | |
1da177e4 LT |
2226 | |
2227 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 2228 | return -EINVAL; |
1da177e4 | 2229 | |
50dd0969 | 2230 | video = acpi_driver_data(device); |
1da177e4 LT |
2231 | |
2232 | acpi_video_bus_stop_devices(video); | |
1da177e4 LT |
2233 | acpi_video_bus_put_devices(video); |
2234 | acpi_video_bus_remove_fs(device); | |
2235 | ||
e9dab196 | 2236 | input_unregister_device(video->input); |
6044ec88 | 2237 | kfree(video->attached_array); |
1da177e4 LT |
2238 | kfree(video); |
2239 | ||
d550d98d | 2240 | return 0; |
1da177e4 LT |
2241 | } |
2242 | ||
74a365b3 MG |
2243 | static int __init intel_opregion_present(void) |
2244 | { | |
2245 | #if defined(CONFIG_DRM_I915) || defined(CONFIG_DRM_I915_MODULE) | |
2246 | struct pci_dev *dev = NULL; | |
2247 | u32 address; | |
2248 | ||
2249 | for_each_pci_dev(dev) { | |
2250 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
2251 | continue; | |
2252 | if (dev->vendor != PCI_VENDOR_ID_INTEL) | |
2253 | continue; | |
2254 | pci_read_config_dword(dev, 0xfc, &address); | |
2255 | if (!address) | |
2256 | continue; | |
2257 | return 1; | |
2258 | } | |
2259 | #endif | |
2260 | return 0; | |
2261 | } | |
2262 | ||
2263 | int acpi_video_register(void) | |
1da177e4 | 2264 | { |
4be44fcd | 2265 | int result = 0; |
1da177e4 | 2266 | |
1da177e4 LT |
2267 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); |
2268 | if (!acpi_video_dir) | |
d550d98d | 2269 | return -ENODEV; |
1da177e4 LT |
2270 | |
2271 | result = acpi_bus_register_driver(&acpi_video_bus); | |
2272 | if (result < 0) { | |
2273 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 2274 | return -ENODEV; |
1da177e4 LT |
2275 | } |
2276 | ||
d550d98d | 2277 | return 0; |
1da177e4 | 2278 | } |
74a365b3 MG |
2279 | EXPORT_SYMBOL(acpi_video_register); |
2280 | ||
2281 | /* | |
2282 | * This is kind of nasty. Hardware using Intel chipsets may require | |
2283 | * the video opregion code to be run first in order to initialise | |
2284 | * state before any ACPI video calls are made. To handle this we defer | |
2285 | * registration of the video class until the opregion code has run. | |
2286 | */ | |
2287 | ||
2288 | static int __init acpi_video_init(void) | |
2289 | { | |
2290 | if (intel_opregion_present()) | |
2291 | return 0; | |
2292 | ||
2293 | return acpi_video_register(); | |
2294 | } | |
1da177e4 | 2295 | |
4be44fcd | 2296 | static void __exit acpi_video_exit(void) |
1da177e4 | 2297 | { |
1da177e4 LT |
2298 | |
2299 | acpi_bus_unregister_driver(&acpi_video_bus); | |
2300 | ||
2301 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2302 | ||
d550d98d | 2303 | return; |
1da177e4 LT |
2304 | } |
2305 | ||
2306 | module_init(acpi_video_init); | |
2307 | module_exit(acpi_video_exit); |