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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 | ||
45cb50e6 ZR |
541 | /* |
542 | * For some buggy _BQC methods, we need to add a constant value to | |
543 | * the _BQC return value to get the actual current brightness level | |
544 | */ | |
545 | ||
546 | static int bqc_offset_aml_bug_workaround; | |
547 | static int __init video_set_bqc_offset(const struct dmi_system_id *d) | |
548 | { | |
549 | bqc_offset_aml_bug_workaround = 9; | |
550 | return 0; | |
551 | } | |
552 | ||
553 | static struct dmi_system_id video_dmi_table[] __initdata = { | |
554 | /* | |
555 | * Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121 | |
556 | */ | |
557 | { | |
558 | .callback = video_set_bqc_offset, | |
559 | .ident = "Acer Aspire 5720", | |
560 | .matches = { | |
561 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
562 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"), | |
563 | }, | |
564 | }, | |
5afc4abe LB |
565 | { |
566 | .callback = video_set_bqc_offset, | |
567 | .ident = "Acer Aspire 5710Z", | |
568 | .matches = { | |
569 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
570 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710Z"), | |
571 | }, | |
572 | }, | |
34ac272b ZR |
573 | { |
574 | .callback = video_set_bqc_offset, | |
575 | .ident = "eMachines E510", | |
576 | .matches = { | |
577 | DMI_MATCH(DMI_BOARD_VENDOR, "EMACHINES"), | |
578 | DMI_MATCH(DMI_PRODUCT_NAME, "eMachines E510"), | |
579 | }, | |
580 | }, | |
93bcece2 ZR |
581 | { |
582 | .callback = video_set_bqc_offset, | |
583 | .ident = "Acer Aspire 5315", | |
584 | .matches = { | |
585 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
586 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"), | |
587 | }, | |
588 | }, | |
45cb50e6 ZR |
589 | {} |
590 | }; | |
591 | ||
1da177e4 | 592 | static int |
4be44fcd | 593 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
27663c58 | 594 | unsigned long long *level) |
1da177e4 | 595 | { |
c8890f90 ZR |
596 | acpi_status status = AE_OK; |
597 | ||
c60d638e ZR |
598 | if (device->cap._BQC || device->cap._BCQ) { |
599 | char *buf = device->cap._BQC ? "_BQC" : "_BCQ"; | |
600 | ||
601 | status = acpi_evaluate_integer(device->dev->handle, buf, | |
c8890f90 ZR |
602 | NULL, level); |
603 | if (ACPI_SUCCESS(status)) { | |
1a7c618a ZR |
604 | if (device->brightness->flags._BQC_use_index) { |
605 | if (device->brightness->flags._BCL_reversed) | |
606 | *level = device->brightness->count | |
607 | - 3 - (*level); | |
608 | *level = device->brightness->levels[*level + 2]; | |
609 | ||
610 | } | |
45cb50e6 | 611 | *level += bqc_offset_aml_bug_workaround; |
c8890f90 ZR |
612 | device->brightness->curr = *level; |
613 | return 0; | |
614 | } else { | |
615 | /* Fixme: | |
616 | * should we return an error or ignore this failure? | |
617 | * dev->brightness->curr is a cached value which stores | |
618 | * the correct current backlight level in most cases. | |
619 | * ACPI video backlight still works w/ buggy _BQC. | |
620 | * http://bugzilla.kernel.org/show_bug.cgi?id=12233 | |
621 | */ | |
c60d638e ZR |
622 | ACPI_WARNING((AE_INFO, "Evaluating %s failed", buf)); |
623 | device->cap._BQC = device->cap._BCQ = 0; | |
c8890f90 ZR |
624 | } |
625 | } | |
626 | ||
4500ca8e | 627 | *level = device->brightness->curr; |
c8890f90 | 628 | return 0; |
1da177e4 LT |
629 | } |
630 | ||
631 | static int | |
4be44fcd LB |
632 | acpi_video_device_EDID(struct acpi_video_device *device, |
633 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 634 | { |
4be44fcd LB |
635 | int status; |
636 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
637 | union acpi_object *obj; | |
638 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
639 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 640 | |
1da177e4 LT |
641 | |
642 | *edid = NULL; | |
643 | ||
644 | if (!device) | |
d550d98d | 645 | return -ENODEV; |
1da177e4 LT |
646 | if (length == 128) |
647 | arg0.integer.value = 1; | |
648 | else if (length == 256) | |
649 | arg0.integer.value = 2; | |
650 | else | |
d550d98d | 651 | return -EINVAL; |
1da177e4 | 652 | |
90130268 | 653 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 654 | if (ACPI_FAILURE(status)) |
d550d98d | 655 | return -ENODEV; |
1da177e4 | 656 | |
50dd0969 | 657 | obj = buffer.pointer; |
1da177e4 LT |
658 | |
659 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
660 | *edid = obj; | |
661 | else { | |
6468463a | 662 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
663 | status = -EFAULT; |
664 | kfree(obj); | |
665 | } | |
666 | ||
d550d98d | 667 | return status; |
1da177e4 LT |
668 | } |
669 | ||
1da177e4 LT |
670 | /* bus */ |
671 | ||
672 | static int | |
4be44fcd | 673 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) |
1da177e4 | 674 | { |
4be44fcd | 675 | int status; |
27663c58 | 676 | unsigned long long tmp; |
4be44fcd LB |
677 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
678 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 679 | |
1da177e4 LT |
680 | |
681 | arg0.integer.value = option; | |
682 | ||
90130268 | 683 | status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp); |
1da177e4 | 684 | if (ACPI_SUCCESS(status)) |
4be44fcd | 685 | status = tmp ? (-EINVAL) : (AE_OK); |
1da177e4 | 686 | |
d550d98d | 687 | return status; |
1da177e4 LT |
688 | } |
689 | ||
690 | static int | |
27663c58 | 691 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long long *id) |
1da177e4 LT |
692 | { |
693 | int status; | |
694 | ||
90130268 | 695 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); |
1da177e4 | 696 | |
d550d98d | 697 | return status; |
1da177e4 LT |
698 | } |
699 | ||
700 | static int | |
4be44fcd | 701 | acpi_video_bus_POST_options(struct acpi_video_bus *video, |
27663c58 | 702 | unsigned long long *options) |
1da177e4 | 703 | { |
4be44fcd | 704 | int status; |
1da177e4 | 705 | |
90130268 | 706 | status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options); |
1da177e4 LT |
707 | *options &= 3; |
708 | ||
d550d98d | 709 | return status; |
1da177e4 LT |
710 | } |
711 | ||
712 | /* | |
713 | * Arg: | |
714 | * video : video bus device pointer | |
715 | * bios_flag : | |
716 | * 0. The system BIOS should NOT automatically switch(toggle) | |
717 | * the active display output. | |
718 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 719 | * active display output. No switch event. |
1da177e4 LT |
720 | * 2. The _DGS value should be locked. |
721 | * 3. The system BIOS should not automatically switch (toggle) the | |
722 | * active display output, but instead generate the display switch | |
723 | * event notify code. | |
724 | * lcd_flag : | |
725 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 726 | * of the LCD when the power changes from AC to DC |
1da177e4 | 727 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 728 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
729 | * Return Value: |
730 | * -1 wrong arg. | |
731 | */ | |
732 | ||
733 | static int | |
4be44fcd | 734 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 735 | { |
4be44fcd LB |
736 | acpi_integer status = 0; |
737 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
738 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 739 | |
1da177e4 | 740 | |
4be44fcd | 741 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
742 | status = -1; |
743 | goto Failed; | |
744 | } | |
745 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
746 | video->dos_setting = arg0.integer.value; | |
90130268 | 747 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 748 | |
4be44fcd | 749 | Failed: |
d550d98d | 750 | return status; |
1da177e4 LT |
751 | } |
752 | ||
935e5f29 ZR |
753 | /* |
754 | * Simple comparison function used to sort backlight levels. | |
755 | */ | |
756 | ||
757 | static int | |
758 | acpi_video_cmp_level(const void *a, const void *b) | |
759 | { | |
760 | return *(int *)a - *(int *)b; | |
761 | } | |
762 | ||
1da177e4 LT |
763 | /* |
764 | * Arg: | |
765 | * device : video output device (LCD, CRT, ..) | |
766 | * | |
767 | * Return Value: | |
469778c1 JJ |
768 | * Maximum brightness level |
769 | * | |
770 | * Allocate and initialize device->brightness. | |
771 | */ | |
772 | ||
773 | static int | |
774 | acpi_video_init_brightness(struct acpi_video_device *device) | |
775 | { | |
776 | union acpi_object *obj = NULL; | |
d32f6947 | 777 | int i, max_level = 0, count = 0, level_ac_battery = 0; |
1a7c618a | 778 | unsigned long long level, level_old; |
469778c1 JJ |
779 | union acpi_object *o; |
780 | struct acpi_video_device_brightness *br = NULL; | |
1a7c618a | 781 | int result = -EINVAL; |
469778c1 JJ |
782 | |
783 | if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { | |
784 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available " | |
785 | "LCD brightness level\n")); | |
786 | goto out; | |
787 | } | |
788 | ||
789 | if (obj->package.count < 2) | |
790 | goto out; | |
791 | ||
792 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
793 | if (!br) { | |
794 | printk(KERN_ERR "can't allocate memory\n"); | |
1a7c618a | 795 | result = -ENOMEM; |
469778c1 JJ |
796 | goto out; |
797 | } | |
798 | ||
d32f6947 | 799 | br->levels = kmalloc((obj->package.count + 2) * sizeof *(br->levels), |
469778c1 | 800 | GFP_KERNEL); |
1a7c618a ZR |
801 | if (!br->levels) { |
802 | result = -ENOMEM; | |
469778c1 | 803 | goto out_free; |
1a7c618a | 804 | } |
469778c1 JJ |
805 | |
806 | for (i = 0; i < obj->package.count; i++) { | |
807 | o = (union acpi_object *)&obj->package.elements[i]; | |
808 | if (o->type != ACPI_TYPE_INTEGER) { | |
809 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
810 | continue; | |
811 | } | |
812 | br->levels[count] = (u32) o->integer.value; | |
813 | ||
814 | if (br->levels[count] > max_level) | |
815 | max_level = br->levels[count]; | |
816 | count++; | |
817 | } | |
818 | ||
d32f6947 ZR |
819 | /* |
820 | * some buggy BIOS don't export the levels | |
821 | * when machine is on AC/Battery in _BCL package. | |
822 | * In this case, the first two elements in _BCL packages | |
823 | * are also supported brightness levels that OS should take care of. | |
824 | */ | |
90af2cf6 ZR |
825 | for (i = 2; i < count; i++) { |
826 | if (br->levels[i] == br->levels[0]) | |
d32f6947 | 827 | level_ac_battery++; |
90af2cf6 ZR |
828 | if (br->levels[i] == br->levels[1]) |
829 | level_ac_battery++; | |
830 | } | |
d32f6947 ZR |
831 | |
832 | if (level_ac_battery < 2) { | |
833 | level_ac_battery = 2 - level_ac_battery; | |
834 | br->flags._BCL_no_ac_battery_levels = 1; | |
835 | for (i = (count - 1 + level_ac_battery); i >= 2; i--) | |
836 | br->levels[i] = br->levels[i - level_ac_battery]; | |
837 | count += level_ac_battery; | |
838 | } else if (level_ac_battery > 2) | |
839 | ACPI_ERROR((AE_INFO, "Too many duplicates in _BCL package\n")); | |
840 | ||
d80fb99f ZR |
841 | /* Check if the _BCL package is in a reversed order */ |
842 | if (max_level == br->levels[2]) { | |
843 | br->flags._BCL_reversed = 1; | |
844 | sort(&br->levels[2], count - 2, sizeof(br->levels[2]), | |
845 | acpi_video_cmp_level, NULL); | |
846 | } else if (max_level != br->levels[count - 1]) | |
847 | ACPI_ERROR((AE_INFO, | |
848 | "Found unordered _BCL package\n")); | |
469778c1 JJ |
849 | |
850 | br->count = count; | |
851 | device->brightness = br; | |
1a7c618a ZR |
852 | |
853 | /* Check the input/output of _BQC/_BCL/_BCM */ | |
854 | if ((max_level < 100) && (max_level <= (count - 2))) | |
855 | br->flags._BCL_use_index = 1; | |
856 | ||
857 | /* | |
858 | * _BCM is always consistent with _BCL, | |
859 | * at least for all the laptops we have ever seen. | |
860 | */ | |
861 | br->flags._BCM_use_index = br->flags._BCL_use_index; | |
862 | ||
863 | /* _BQC uses INDEX while _BCL uses VALUE in some laptops */ | |
e047cca6 ZR |
864 | br->curr = level_old = max_level; |
865 | ||
866 | if (!device->cap._BQC) | |
867 | goto set_level; | |
868 | ||
1a7c618a ZR |
869 | result = acpi_video_device_lcd_get_level_current(device, &level_old); |
870 | if (result) | |
871 | goto out_free_levels; | |
872 | ||
e047cca6 ZR |
873 | /* |
874 | * Set the level to maximum and check if _BQC uses indexed value | |
875 | */ | |
876 | result = acpi_video_device_lcd_set_level(device, max_level); | |
1a7c618a ZR |
877 | if (result) |
878 | goto out_free_levels; | |
879 | ||
880 | result = acpi_video_device_lcd_get_level_current(device, &level); | |
881 | if (result) | |
882 | goto out_free_levels; | |
883 | ||
e047cca6 ZR |
884 | br->flags._BQC_use_index = (level == max_level ? 0 : 1); |
885 | ||
886 | if (!br->flags._BQC_use_index) | |
887 | goto set_level; | |
888 | ||
889 | if (br->flags._BCL_reversed) | |
890 | level_old = (br->count - 1) - level_old; | |
891 | level_old = br->levels[level_old]; | |
892 | ||
893 | set_level: | |
894 | result = acpi_video_device_lcd_set_level(device, level_old); | |
895 | if (result) | |
896 | goto out_free_levels; | |
1a7c618a | 897 | |
d32f6947 ZR |
898 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
899 | "found %d brightness levels\n", count - 2)); | |
469778c1 | 900 | kfree(obj); |
1a7c618a | 901 | return result; |
469778c1 JJ |
902 | |
903 | out_free_levels: | |
904 | kfree(br->levels); | |
905 | out_free: | |
906 | kfree(br); | |
907 | out: | |
908 | device->brightness = NULL; | |
909 | kfree(obj); | |
1a7c618a | 910 | return result; |
469778c1 JJ |
911 | } |
912 | ||
913 | /* | |
914 | * Arg: | |
915 | * device : video output device (LCD, CRT, ..) | |
916 | * | |
917 | * Return Value: | |
1da177e4 LT |
918 | * None |
919 | * | |
98fb8fe1 | 920 | * Find out all required AML methods defined under the output |
1da177e4 LT |
921 | * device. |
922 | */ | |
923 | ||
4be44fcd | 924 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 925 | { |
1da177e4 | 926 | acpi_handle h_dummy1; |
1da177e4 | 927 | |
1da177e4 | 928 | |
98934def | 929 | memset(&device->cap, 0, sizeof(device->cap)); |
1da177e4 | 930 | |
90130268 | 931 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
932 | device->cap._ADR = 1; |
933 | } | |
90130268 | 934 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 935 | device->cap._BCL = 1; |
1da177e4 | 936 | } |
90130268 | 937 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 938 | device->cap._BCM = 1; |
1da177e4 | 939 | } |
2f3d000a YL |
940 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
941 | device->cap._BQC = 1; | |
c60d638e ZR |
942 | else if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCQ", |
943 | &h_dummy1))) { | |
944 | printk(KERN_WARNING FW_BUG "_BCQ is used instead of _BQC\n"); | |
945 | device->cap._BCQ = 1; | |
946 | } | |
947 | ||
90130268 | 948 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 949 | device->cap._DDC = 1; |
1da177e4 | 950 | } |
90130268 | 951 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
952 | device->cap._DCS = 1; |
953 | } | |
90130268 | 954 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
955 | device->cap._DGS = 1; |
956 | } | |
90130268 | 957 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
958 | device->cap._DSS = 1; |
959 | } | |
960 | ||
1a7c618a | 961 | if (acpi_video_backlight_support()) { |
702ed512 | 962 | int result; |
2f3d000a YL |
963 | static int count = 0; |
964 | char *name; | |
1a7c618a ZR |
965 | |
966 | result = acpi_video_init_brightness(device); | |
967 | if (result) | |
968 | return; | |
2f3d000a YL |
969 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); |
970 | if (!name) | |
971 | return; | |
972 | ||
2f3d000a | 973 | sprintf(name, "acpi_video%d", count++); |
2f3d000a | 974 | device->backlight = backlight_device_register(name, |
599a52d1 | 975 | NULL, device, &acpi_backlight_ops); |
38531e6f | 976 | device->backlight->props.max_brightness = device->brightness->count-3; |
2f3d000a | 977 | kfree(name); |
702ed512 ZR |
978 | |
979 | device->cdev = thermal_cooling_device_register("LCD", | |
980 | device->dev, &video_cooling_ops); | |
43ff39f2 TS |
981 | if (IS_ERR(device->cdev)) |
982 | return; | |
983 | ||
fc3a8828 GKH |
984 | dev_info(&device->dev->dev, "registered as cooling_device%d\n", |
985 | device->cdev->id); | |
9030062f JL |
986 | result = sysfs_create_link(&device->dev->dev.kobj, |
987 | &device->cdev->device.kobj, | |
988 | "thermal_cooling"); | |
989 | if (result) | |
990 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
991 | result = sysfs_create_link(&device->cdev->device.kobj, | |
992 | &device->dev->dev.kobj, "device"); | |
993 | if (result) | |
994 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
995 | ||
2f3d000a | 996 | } |
c3d6de69 TR |
997 | |
998 | if (acpi_video_display_switch_support()) { | |
999 | ||
1000 | if (device->cap._DCS && device->cap._DSS) { | |
1001 | static int count; | |
1002 | char *name; | |
1003 | name = kzalloc(MAX_NAME_LEN, GFP_KERNEL); | |
1004 | if (!name) | |
1005 | return; | |
1006 | sprintf(name, "acpi_video%d", count++); | |
1007 | device->output_dev = video_output_register(name, | |
1008 | NULL, device, &acpi_output_properties); | |
1009 | kfree(name); | |
1010 | } | |
23b0f015 | 1011 | } |
1da177e4 LT |
1012 | } |
1013 | ||
1014 | /* | |
1015 | * Arg: | |
1016 | * device : video output device (VGA) | |
1017 | * | |
1018 | * Return Value: | |
1019 | * None | |
1020 | * | |
98fb8fe1 | 1021 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
1022 | */ |
1023 | ||
4be44fcd | 1024 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 1025 | { |
4be44fcd | 1026 | acpi_handle h_dummy1; |
1da177e4 | 1027 | |
98934def | 1028 | memset(&video->cap, 0, sizeof(video->cap)); |
90130268 | 1029 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
1030 | video->cap._DOS = 1; |
1031 | } | |
90130268 | 1032 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
1033 | video->cap._DOD = 1; |
1034 | } | |
90130268 | 1035 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
1036 | video->cap._ROM = 1; |
1037 | } | |
90130268 | 1038 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
1039 | video->cap._GPD = 1; |
1040 | } | |
90130268 | 1041 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
1042 | video->cap._SPD = 1; |
1043 | } | |
90130268 | 1044 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
1045 | video->cap._VPO = 1; |
1046 | } | |
1047 | } | |
1048 | ||
1049 | /* | |
1050 | * Check whether the video bus device has required AML method to | |
1051 | * support the desired features | |
1052 | */ | |
1053 | ||
4be44fcd | 1054 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 1055 | { |
4be44fcd | 1056 | acpi_status status = -ENOENT; |
22c13f9d | 1057 | struct device *dev; |
1da177e4 LT |
1058 | |
1059 | if (!video) | |
d550d98d | 1060 | return -EINVAL; |
1da177e4 | 1061 | |
22c13f9d TR |
1062 | dev = acpi_get_physical_pci_device(video->device->handle); |
1063 | if (!dev) | |
1064 | return -ENODEV; | |
1065 | put_device(dev); | |
1066 | ||
1da177e4 LT |
1067 | /* Since there is no HID, CID and so on for VGA driver, we have |
1068 | * to check well known required nodes. | |
1069 | */ | |
1070 | ||
98fb8fe1 | 1071 | /* Does this device support video switching? */ |
4be44fcd | 1072 | if (video->cap._DOS) { |
1da177e4 LT |
1073 | video->flags.multihead = 1; |
1074 | status = 0; | |
1075 | } | |
1076 | ||
98fb8fe1 | 1077 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 1078 | if (video->cap._ROM) { |
1da177e4 LT |
1079 | video->flags.rom = 1; |
1080 | status = 0; | |
1081 | } | |
1082 | ||
98fb8fe1 | 1083 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 1084 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
1085 | video->flags.post = 1; |
1086 | status = 0; | |
1087 | } | |
1088 | ||
d550d98d | 1089 | return status; |
1da177e4 LT |
1090 | } |
1091 | ||
1092 | /* -------------------------------------------------------------------------- | |
1093 | FS Interface (/proc) | |
1094 | -------------------------------------------------------------------------- */ | |
1095 | ||
4be44fcd | 1096 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
1097 | |
1098 | /* video devices */ | |
1099 | ||
4be44fcd | 1100 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1101 | { |
50dd0969 | 1102 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 1103 | |
1da177e4 LT |
1104 | |
1105 | if (!dev) | |
1106 | goto end; | |
1107 | ||
1108 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
1109 | seq_printf(seq, "type: "); | |
1110 | if (dev->flags.crt) | |
1111 | seq_printf(seq, "CRT\n"); | |
1112 | else if (dev->flags.lcd) | |
1113 | seq_printf(seq, "LCD\n"); | |
1114 | else if (dev->flags.tvout) | |
1115 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
1116 | else if (dev->flags.dvi) |
1117 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
1118 | else |
1119 | seq_printf(seq, "UNKNOWN\n"); | |
1120 | ||
4be44fcd | 1121 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 1122 | |
4be44fcd | 1123 | end: |
d550d98d | 1124 | return 0; |
1da177e4 LT |
1125 | } |
1126 | ||
1127 | static int | |
4be44fcd | 1128 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1129 | { |
1130 | return single_open(file, acpi_video_device_info_seq_show, | |
1131 | PDE(inode)->data); | |
1132 | } | |
1133 | ||
4be44fcd | 1134 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1135 | { |
4be44fcd | 1136 | int status; |
50dd0969 | 1137 | struct acpi_video_device *dev = seq->private; |
27663c58 | 1138 | unsigned long long state; |
1da177e4 | 1139 | |
1da177e4 LT |
1140 | |
1141 | if (!dev) | |
1142 | goto end; | |
1143 | ||
1144 | status = acpi_video_device_get_state(dev, &state); | |
1145 | seq_printf(seq, "state: "); | |
1146 | if (ACPI_SUCCESS(status)) | |
27663c58 | 1147 | seq_printf(seq, "0x%02llx\n", state); |
1da177e4 LT |
1148 | else |
1149 | seq_printf(seq, "<not supported>\n"); | |
1150 | ||
1151 | status = acpi_video_device_query(dev, &state); | |
1152 | seq_printf(seq, "query: "); | |
1153 | if (ACPI_SUCCESS(status)) | |
27663c58 | 1154 | seq_printf(seq, "0x%02llx\n", state); |
1da177e4 LT |
1155 | else |
1156 | seq_printf(seq, "<not supported>\n"); | |
1157 | ||
4be44fcd | 1158 | end: |
d550d98d | 1159 | return 0; |
1da177e4 LT |
1160 | } |
1161 | ||
1162 | static int | |
4be44fcd | 1163 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1164 | { |
1165 | return single_open(file, acpi_video_device_state_seq_show, | |
1166 | PDE(inode)->data); | |
1167 | } | |
1168 | ||
1169 | static ssize_t | |
4be44fcd LB |
1170 | acpi_video_device_write_state(struct file *file, |
1171 | const char __user * buffer, | |
1172 | size_t count, loff_t * data) | |
1da177e4 | 1173 | { |
4be44fcd | 1174 | int status; |
50dd0969 JE |
1175 | struct seq_file *m = file->private_data; |
1176 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
1177 | char str[12] = { 0 }; |
1178 | u32 state = 0; | |
1da177e4 | 1179 | |
1da177e4 LT |
1180 | |
1181 | if (!dev || count + 1 > sizeof str) | |
d550d98d | 1182 | return -EINVAL; |
1da177e4 LT |
1183 | |
1184 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1185 | return -EFAULT; |
1da177e4 LT |
1186 | |
1187 | str[count] = 0; | |
1188 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1189 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
1190 | |
1191 | status = acpi_video_device_set_state(dev, state); | |
1192 | ||
1193 | if (status) | |
d550d98d | 1194 | return -EFAULT; |
1da177e4 | 1195 | |
d550d98d | 1196 | return count; |
1da177e4 LT |
1197 | } |
1198 | ||
1199 | static int | |
4be44fcd | 1200 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1201 | { |
50dd0969 | 1202 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 1203 | int i; |
1da177e4 | 1204 | |
1da177e4 LT |
1205 | |
1206 | if (!dev || !dev->brightness) { | |
1207 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 1208 | return 0; |
1da177e4 LT |
1209 | } |
1210 | ||
1211 | seq_printf(seq, "levels: "); | |
0a3db1ce | 1212 | for (i = 2; i < dev->brightness->count; i++) |
1da177e4 LT |
1213 | seq_printf(seq, " %d", dev->brightness->levels[i]); |
1214 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
1215 | ||
d550d98d | 1216 | return 0; |
1da177e4 LT |
1217 | } |
1218 | ||
1219 | static int | |
4be44fcd | 1220 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1221 | { |
1222 | return single_open(file, acpi_video_device_brightness_seq_show, | |
1223 | PDE(inode)->data); | |
1224 | } | |
1225 | ||
1226 | static ssize_t | |
4be44fcd LB |
1227 | acpi_video_device_write_brightness(struct file *file, |
1228 | const char __user * buffer, | |
1229 | size_t count, loff_t * data) | |
1da177e4 | 1230 | { |
50dd0969 JE |
1231 | struct seq_file *m = file->private_data; |
1232 | struct acpi_video_device *dev = m->private; | |
c88c5786 | 1233 | char str[5] = { 0 }; |
4be44fcd LB |
1234 | unsigned int level = 0; |
1235 | int i; | |
1da177e4 | 1236 | |
1da177e4 | 1237 | |
59d399d3 | 1238 | if (!dev || !dev->brightness || count + 1 > sizeof str) |
d550d98d | 1239 | return -EINVAL; |
1da177e4 LT |
1240 | |
1241 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1242 | return -EFAULT; |
1da177e4 LT |
1243 | |
1244 | str[count] = 0; | |
1245 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1246 | |
1da177e4 | 1247 | if (level > 100) |
d550d98d | 1248 | return -EFAULT; |
1da177e4 | 1249 | |
98fb8fe1 | 1250 | /* validate through the list of available levels */ |
0a3db1ce | 1251 | for (i = 2; i < dev->brightness->count; i++) |
1da177e4 | 1252 | if (level == dev->brightness->levels[i]) { |
24450c7a ZR |
1253 | if (!acpi_video_device_lcd_set_level(dev, level)) |
1254 | return count; | |
1da177e4 LT |
1255 | break; |
1256 | } | |
1257 | ||
24450c7a | 1258 | return -EINVAL; |
1da177e4 LT |
1259 | } |
1260 | ||
4be44fcd | 1261 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1262 | { |
50dd0969 | 1263 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
1264 | int status; |
1265 | int i; | |
1266 | union acpi_object *edid = NULL; | |
1da177e4 | 1267 | |
1da177e4 LT |
1268 | |
1269 | if (!dev) | |
1270 | goto out; | |
1271 | ||
4be44fcd | 1272 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 1273 | if (ACPI_FAILURE(status)) { |
4be44fcd | 1274 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
1275 | } |
1276 | ||
1277 | if (ACPI_FAILURE(status)) { | |
1278 | goto out; | |
1279 | } | |
1280 | ||
1281 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
1282 | for (i = 0; i < edid->buffer.length; i++) | |
1283 | seq_putc(seq, edid->buffer.pointer[i]); | |
1284 | } | |
1285 | ||
4be44fcd | 1286 | out: |
1da177e4 LT |
1287 | if (!edid) |
1288 | seq_printf(seq, "<not supported>\n"); | |
1289 | else | |
1290 | kfree(edid); | |
1291 | ||
d550d98d | 1292 | return 0; |
1da177e4 LT |
1293 | } |
1294 | ||
1295 | static int | |
4be44fcd | 1296 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1297 | { |
1298 | return single_open(file, acpi_video_device_EDID_seq_show, | |
1299 | PDE(inode)->data); | |
1300 | } | |
1301 | ||
4be44fcd | 1302 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 1303 | { |
251cb0bc | 1304 | struct proc_dir_entry *entry, *device_dir; |
1da177e4 LT |
1305 | struct acpi_video_device *vid_dev; |
1306 | ||
50dd0969 | 1307 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1308 | if (!vid_dev) |
d550d98d | 1309 | return -ENODEV; |
1da177e4 | 1310 | |
251cb0bc DT |
1311 | device_dir = proc_mkdir(acpi_device_bid(device), |
1312 | vid_dev->video->dir); | |
1313 | if (!device_dir) | |
1314 | return -ENOMEM; | |
1315 | ||
1da177e4 | 1316 | /* 'info' [R] */ |
e0066c4e | 1317 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab | 1318 | &acpi_video_device_info_fops, acpi_driver_data(device)); |
1da177e4 | 1319 | if (!entry) |
251cb0bc | 1320 | goto err_remove_dir; |
1da177e4 LT |
1321 | |
1322 | /* 'state' [R/W] */ | |
cf7acfab | 1323 | entry = proc_create_data("state", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1324 | device_dir, |
cf7acfab DL |
1325 | &acpi_video_device_state_fops, |
1326 | acpi_driver_data(device)); | |
1da177e4 | 1327 | if (!entry) |
251cb0bc | 1328 | goto err_remove_info; |
1da177e4 LT |
1329 | |
1330 | /* 'brightness' [R/W] */ | |
cf7acfab | 1331 | entry = proc_create_data("brightness", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1332 | device_dir, |
cf7acfab DL |
1333 | &acpi_video_device_brightness_fops, |
1334 | acpi_driver_data(device)); | |
1da177e4 | 1335 | if (!entry) |
251cb0bc | 1336 | goto err_remove_state; |
1da177e4 LT |
1337 | |
1338 | /* 'EDID' [R] */ | |
e0066c4e | 1339 | entry = proc_create_data("EDID", S_IRUGO, device_dir, |
cf7acfab DL |
1340 | &acpi_video_device_EDID_fops, |
1341 | acpi_driver_data(device)); | |
1da177e4 | 1342 | if (!entry) |
251cb0bc | 1343 | goto err_remove_brightness; |
1da177e4 | 1344 | |
e0066c4e AD |
1345 | acpi_device_dir(device) = device_dir; |
1346 | ||
d550d98d | 1347 | return 0; |
251cb0bc DT |
1348 | |
1349 | err_remove_brightness: | |
1350 | remove_proc_entry("brightness", device_dir); | |
1351 | err_remove_state: | |
1352 | remove_proc_entry("state", device_dir); | |
1353 | err_remove_info: | |
1354 | remove_proc_entry("info", device_dir); | |
1355 | err_remove_dir: | |
1356 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); | |
1357 | return -ENOMEM; | |
1da177e4 LT |
1358 | } |
1359 | ||
4be44fcd | 1360 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1361 | { |
1362 | struct acpi_video_device *vid_dev; | |
251cb0bc | 1363 | struct proc_dir_entry *device_dir; |
1da177e4 | 1364 | |
50dd0969 | 1365 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1366 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 1367 | return -ENODEV; |
1da177e4 | 1368 | |
251cb0bc DT |
1369 | device_dir = acpi_device_dir(device); |
1370 | if (device_dir) { | |
1371 | remove_proc_entry("info", device_dir); | |
1372 | remove_proc_entry("state", device_dir); | |
1373 | remove_proc_entry("brightness", device_dir); | |
1374 | remove_proc_entry("EDID", device_dir); | |
4be44fcd | 1375 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1376 | acpi_device_dir(device) = NULL; |
1377 | } | |
1378 | ||
d550d98d | 1379 | return 0; |
1da177e4 LT |
1380 | } |
1381 | ||
1da177e4 | 1382 | /* video bus */ |
4be44fcd | 1383 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1384 | { |
50dd0969 | 1385 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1386 | |
1da177e4 LT |
1387 | |
1388 | if (!video) | |
1389 | goto end; | |
1390 | ||
1391 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1392 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1393 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1394 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1395 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1396 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1397 | |
4be44fcd | 1398 | end: |
d550d98d | 1399 | return 0; |
1da177e4 LT |
1400 | } |
1401 | ||
4be44fcd | 1402 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1403 | { |
4be44fcd LB |
1404 | return single_open(file, acpi_video_bus_info_seq_show, |
1405 | PDE(inode)->data); | |
1da177e4 LT |
1406 | } |
1407 | ||
4be44fcd | 1408 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1409 | { |
50dd0969 | 1410 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1411 | |
1da177e4 LT |
1412 | |
1413 | if (!video) | |
1414 | goto end; | |
1415 | ||
96b2dd1f | 1416 | printk(KERN_INFO PREFIX "Please implement %s\n", __func__); |
1da177e4 LT |
1417 | seq_printf(seq, "<TODO>\n"); |
1418 | ||
4be44fcd | 1419 | end: |
d550d98d | 1420 | return 0; |
1da177e4 LT |
1421 | } |
1422 | ||
4be44fcd | 1423 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1424 | { |
1425 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1426 | } | |
1427 | ||
4be44fcd | 1428 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1429 | { |
50dd0969 | 1430 | struct acpi_video_bus *video = seq->private; |
27663c58 | 1431 | unsigned long long options; |
4be44fcd | 1432 | int status; |
1da177e4 | 1433 | |
1da177e4 LT |
1434 | |
1435 | if (!video) | |
1436 | goto end; | |
1437 | ||
1438 | status = acpi_video_bus_POST_options(video, &options); | |
1439 | if (ACPI_SUCCESS(status)) { | |
1440 | if (!(options & 1)) { | |
4be44fcd LB |
1441 | printk(KERN_WARNING PREFIX |
1442 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1443 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1444 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 | 1445 | } |
4d939155 | 1446 | printk(KERN_WARNING "%llx\n", options); |
98fb8fe1 | 1447 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1448 | if (options & 2) |
1449 | seq_printf(seq, " <PCI video>"); | |
1450 | if (options & 4) | |
1451 | seq_printf(seq, " <AGP video>"); | |
1452 | seq_putc(seq, '\n'); | |
1453 | } else | |
1454 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1455 | end: |
d550d98d | 1456 | return 0; |
1da177e4 LT |
1457 | } |
1458 | ||
1459 | static int | |
4be44fcd | 1460 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1461 | { |
4be44fcd LB |
1462 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1463 | PDE(inode)->data); | |
1da177e4 LT |
1464 | } |
1465 | ||
4be44fcd | 1466 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1467 | { |
50dd0969 | 1468 | struct acpi_video_bus *video = seq->private; |
4be44fcd | 1469 | int status; |
27663c58 | 1470 | unsigned long long id; |
1da177e4 | 1471 | |
1da177e4 LT |
1472 | |
1473 | if (!video) | |
1474 | goto end; | |
1475 | ||
4be44fcd | 1476 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1477 | if (!ACPI_SUCCESS(status)) { |
1478 | seq_printf(seq, "<not supported>\n"); | |
1479 | goto end; | |
1480 | } | |
98fb8fe1 | 1481 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1482 | |
4be44fcd | 1483 | end: |
d550d98d | 1484 | return 0; |
1da177e4 LT |
1485 | } |
1486 | ||
4be44fcd | 1487 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1488 | { |
50dd0969 | 1489 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1490 | |
1da177e4 | 1491 | |
4be44fcd | 1492 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1493 | |
d550d98d | 1494 | return 0; |
1da177e4 LT |
1495 | } |
1496 | ||
4be44fcd | 1497 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1498 | { |
4be44fcd LB |
1499 | return single_open(file, acpi_video_bus_POST_seq_show, |
1500 | PDE(inode)->data); | |
1da177e4 LT |
1501 | } |
1502 | ||
4be44fcd | 1503 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1504 | { |
1505 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1506 | } | |
1507 | ||
1508 | static ssize_t | |
4be44fcd LB |
1509 | acpi_video_bus_write_POST(struct file *file, |
1510 | const char __user * buffer, | |
1511 | size_t count, loff_t * data) | |
1da177e4 | 1512 | { |
4be44fcd | 1513 | int status; |
50dd0969 JE |
1514 | struct seq_file *m = file->private_data; |
1515 | struct acpi_video_bus *video = m->private; | |
4be44fcd | 1516 | char str[12] = { 0 }; |
27663c58 | 1517 | unsigned long long opt, options; |
1da177e4 | 1518 | |
1da177e4 | 1519 | |
1da177e4 | 1520 | if (!video || count + 1 > sizeof str) |
d550d98d | 1521 | return -EINVAL; |
1da177e4 LT |
1522 | |
1523 | status = acpi_video_bus_POST_options(video, &options); | |
1524 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1525 | return -EINVAL; |
1da177e4 LT |
1526 | |
1527 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1528 | return -EFAULT; |
1da177e4 LT |
1529 | |
1530 | str[count] = 0; | |
1531 | opt = strtoul(str, NULL, 0); | |
1532 | if (opt > 3) | |
d550d98d | 1533 | return -EFAULT; |
1da177e4 | 1534 | |
98fb8fe1 | 1535 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1536 | options |= 1; |
1537 | ||
1538 | if (options & (1ul << opt)) { | |
4be44fcd | 1539 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1540 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1541 | return -EFAULT; |
1da177e4 LT |
1542 | |
1543 | } | |
1544 | ||
d550d98d | 1545 | return count; |
1da177e4 LT |
1546 | } |
1547 | ||
1548 | static ssize_t | |
4be44fcd LB |
1549 | acpi_video_bus_write_DOS(struct file *file, |
1550 | const char __user * buffer, | |
1551 | size_t count, loff_t * data) | |
1da177e4 | 1552 | { |
4be44fcd | 1553 | int status; |
50dd0969 JE |
1554 | struct seq_file *m = file->private_data; |
1555 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1556 | char str[12] = { 0 }; |
1557 | unsigned long opt; | |
1da177e4 | 1558 | |
1da177e4 | 1559 | |
1da177e4 | 1560 | if (!video || count + 1 > sizeof str) |
d550d98d | 1561 | return -EINVAL; |
1da177e4 LT |
1562 | |
1563 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1564 | return -EFAULT; |
1da177e4 LT |
1565 | |
1566 | str[count] = 0; | |
1567 | opt = strtoul(str, NULL, 0); | |
1568 | if (opt > 7) | |
d550d98d | 1569 | return -EFAULT; |
1da177e4 | 1570 | |
4be44fcd | 1571 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1572 | |
1573 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1574 | return -EFAULT; |
1da177e4 | 1575 | |
d550d98d | 1576 | return count; |
1da177e4 LT |
1577 | } |
1578 | ||
4be44fcd | 1579 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1580 | { |
251cb0bc DT |
1581 | struct acpi_video_bus *video = acpi_driver_data(device); |
1582 | struct proc_dir_entry *device_dir; | |
1583 | struct proc_dir_entry *entry; | |
1da177e4 | 1584 | |
251cb0bc DT |
1585 | device_dir = proc_mkdir(acpi_device_bid(device), acpi_video_dir); |
1586 | if (!device_dir) | |
1587 | return -ENOMEM; | |
1da177e4 | 1588 | |
1da177e4 | 1589 | /* 'info' [R] */ |
e0066c4e | 1590 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab DL |
1591 | &acpi_video_bus_info_fops, |
1592 | acpi_driver_data(device)); | |
1da177e4 | 1593 | if (!entry) |
251cb0bc | 1594 | goto err_remove_dir; |
1da177e4 LT |
1595 | |
1596 | /* 'ROM' [R] */ | |
e0066c4e | 1597 | entry = proc_create_data("ROM", S_IRUGO, device_dir, |
cf7acfab DL |
1598 | &acpi_video_bus_ROM_fops, |
1599 | acpi_driver_data(device)); | |
1da177e4 | 1600 | if (!entry) |
251cb0bc | 1601 | goto err_remove_info; |
1da177e4 LT |
1602 | |
1603 | /* 'POST_info' [R] */ | |
e0066c4e | 1604 | entry = proc_create_data("POST_info", S_IRUGO, device_dir, |
cf7acfab DL |
1605 | &acpi_video_bus_POST_info_fops, |
1606 | acpi_driver_data(device)); | |
1da177e4 | 1607 | if (!entry) |
251cb0bc | 1608 | goto err_remove_rom; |
1da177e4 LT |
1609 | |
1610 | /* 'POST' [R/W] */ | |
08acd4f8 | 1611 | entry = proc_create_data("POST", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1612 | device_dir, |
cf7acfab DL |
1613 | &acpi_video_bus_POST_fops, |
1614 | acpi_driver_data(device)); | |
1da177e4 | 1615 | if (!entry) |
251cb0bc | 1616 | goto err_remove_post_info; |
1da177e4 LT |
1617 | |
1618 | /* 'DOS' [R/W] */ | |
08acd4f8 | 1619 | entry = proc_create_data("DOS", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1620 | device_dir, |
cf7acfab DL |
1621 | &acpi_video_bus_DOS_fops, |
1622 | acpi_driver_data(device)); | |
1da177e4 | 1623 | if (!entry) |
251cb0bc | 1624 | goto err_remove_post; |
1da177e4 | 1625 | |
251cb0bc | 1626 | video->dir = acpi_device_dir(device) = device_dir; |
d550d98d | 1627 | return 0; |
251cb0bc DT |
1628 | |
1629 | err_remove_post: | |
1630 | remove_proc_entry("POST", device_dir); | |
1631 | err_remove_post_info: | |
1632 | remove_proc_entry("POST_info", device_dir); | |
1633 | err_remove_rom: | |
1634 | remove_proc_entry("ROM", device_dir); | |
1635 | err_remove_info: | |
1636 | remove_proc_entry("info", device_dir); | |
1637 | err_remove_dir: | |
1638 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); | |
1639 | return -ENOMEM; | |
1da177e4 LT |
1640 | } |
1641 | ||
4be44fcd | 1642 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1643 | { |
251cb0bc DT |
1644 | struct proc_dir_entry *device_dir = acpi_device_dir(device); |
1645 | ||
1646 | if (device_dir) { | |
1647 | remove_proc_entry("info", device_dir); | |
1648 | remove_proc_entry("ROM", device_dir); | |
1649 | remove_proc_entry("POST_info", device_dir); | |
1650 | remove_proc_entry("POST", device_dir); | |
1651 | remove_proc_entry("DOS", device_dir); | |
4be44fcd | 1652 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1653 | acpi_device_dir(device) = NULL; |
1654 | } | |
1655 | ||
d550d98d | 1656 | return 0; |
1da177e4 LT |
1657 | } |
1658 | ||
1659 | /* -------------------------------------------------------------------------- | |
1660 | Driver Interface | |
1661 | -------------------------------------------------------------------------- */ | |
1662 | ||
1663 | /* device interface */ | |
82cae999 RZ |
1664 | static struct acpi_video_device_attrib* |
1665 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1666 | { | |
78eed028 DT |
1667 | struct acpi_video_enumerated_device *ids; |
1668 | int i; | |
1669 | ||
1670 | for (i = 0; i < video->attached_count; i++) { | |
1671 | ids = &video->attached_array[i]; | |
1672 | if ((ids->value.int_val & 0xffff) == device_id) | |
1673 | return &ids->value.attrib; | |
1674 | } | |
82cae999 | 1675 | |
82cae999 RZ |
1676 | return NULL; |
1677 | } | |
1da177e4 LT |
1678 | |
1679 | static int | |
4be44fcd LB |
1680 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1681 | struct acpi_video_bus *video) | |
1da177e4 | 1682 | { |
27663c58 | 1683 | unsigned long long device_id; |
973bf491 | 1684 | int status; |
4be44fcd | 1685 | struct acpi_video_device *data; |
82cae999 | 1686 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1687 | |
1688 | if (!device || !video) | |
d550d98d | 1689 | return -EINVAL; |
1da177e4 | 1690 | |
4be44fcd LB |
1691 | status = |
1692 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1693 | if (ACPI_SUCCESS(status)) { |
1694 | ||
36bcbec7 | 1695 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1696 | if (!data) |
d550d98d | 1697 | return -ENOMEM; |
1da177e4 | 1698 | |
1da177e4 LT |
1699 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1700 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 1701 | device->driver_data = data; |
1da177e4 LT |
1702 | |
1703 | data->device_id = device_id; | |
1704 | data->video = video; | |
1705 | data->dev = device; | |
1706 | ||
82cae999 RZ |
1707 | attribute = acpi_video_get_device_attr(video, device_id); |
1708 | ||
1709 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1710 | switch (attribute->display_type) { | |
1711 | case ACPI_VIDEO_DISPLAY_CRT: | |
1712 | data->flags.crt = 1; | |
1713 | break; | |
1714 | case ACPI_VIDEO_DISPLAY_TV: | |
1715 | data->flags.tvout = 1; | |
1716 | break; | |
1717 | case ACPI_VIDEO_DISPLAY_DVI: | |
1718 | data->flags.dvi = 1; | |
1719 | break; | |
1720 | case ACPI_VIDEO_DISPLAY_LCD: | |
1721 | data->flags.lcd = 1; | |
1722 | break; | |
1723 | default: | |
1724 | data->flags.unknown = 1; | |
1725 | break; | |
1726 | } | |
1727 | if(attribute->bios_can_detect) | |
1728 | data->flags.bios = 1; | |
1729 | } else | |
1da177e4 | 1730 | data->flags.unknown = 1; |
4be44fcd | 1731 | |
1da177e4 LT |
1732 | acpi_video_device_bind(video, data); |
1733 | acpi_video_device_find_cap(data); | |
1734 | ||
90130268 | 1735 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1736 | ACPI_DEVICE_NOTIFY, |
1737 | acpi_video_device_notify, | |
1738 | data); | |
1da177e4 | 1739 | if (ACPI_FAILURE(status)) { |
55ac9a01 LM |
1740 | printk(KERN_ERR PREFIX |
1741 | "Error installing notify handler\n"); | |
973bf491 YL |
1742 | if(data->brightness) |
1743 | kfree(data->brightness->levels); | |
1744 | kfree(data->brightness); | |
1745 | kfree(data); | |
1746 | return -ENODEV; | |
1da177e4 LT |
1747 | } |
1748 | ||
bbac81f5 | 1749 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1750 | list_add_tail(&data->entry, &video->video_device_list); |
bbac81f5 | 1751 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1752 | |
1753 | acpi_video_device_add_fs(device); | |
1754 | ||
d550d98d | 1755 | return 0; |
1da177e4 LT |
1756 | } |
1757 | ||
d550d98d | 1758 | return -ENOENT; |
1da177e4 LT |
1759 | } |
1760 | ||
1761 | /* | |
1762 | * Arg: | |
1763 | * video : video bus device | |
1764 | * | |
1765 | * Return: | |
1766 | * none | |
1767 | * | |
1768 | * Enumerate the video device list of the video bus, | |
1769 | * bind the ids with the corresponding video devices | |
1770 | * under the video bus. | |
4be44fcd | 1771 | */ |
1da177e4 | 1772 | |
4be44fcd | 1773 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1774 | { |
ff102ea9 DT |
1775 | struct acpi_video_device *dev; |
1776 | ||
bbac81f5 | 1777 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1778 | |
1779 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1780 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1781 | |
bbac81f5 | 1782 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1783 | } |
1784 | ||
1785 | /* | |
1786 | * Arg: | |
1787 | * video : video bus device | |
1788 | * device : video output device under the video | |
1789 | * bus | |
1790 | * | |
1791 | * Return: | |
1792 | * none | |
1793 | * | |
1794 | * Bind the ids with the corresponding video devices | |
1795 | * under the video bus. | |
4be44fcd | 1796 | */ |
1da177e4 LT |
1797 | |
1798 | static void | |
4be44fcd LB |
1799 | acpi_video_device_bind(struct acpi_video_bus *video, |
1800 | struct acpi_video_device *device) | |
1da177e4 | 1801 | { |
78eed028 | 1802 | struct acpi_video_enumerated_device *ids; |
4be44fcd | 1803 | int i; |
1da177e4 | 1804 | |
78eed028 DT |
1805 | for (i = 0; i < video->attached_count; i++) { |
1806 | ids = &video->attached_array[i]; | |
1807 | if (device->device_id == (ids->value.int_val & 0xffff)) { | |
1808 | ids->bind_info = device; | |
1da177e4 LT |
1809 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); |
1810 | } | |
1811 | } | |
1da177e4 LT |
1812 | } |
1813 | ||
1814 | /* | |
1815 | * Arg: | |
1816 | * video : video bus device | |
1817 | * | |
1818 | * Return: | |
1819 | * < 0 : error | |
1820 | * | |
1821 | * Call _DOD to enumerate all devices attached to display adapter | |
1822 | * | |
4be44fcd | 1823 | */ |
1da177e4 LT |
1824 | |
1825 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1826 | { | |
4be44fcd LB |
1827 | int status; |
1828 | int count; | |
1829 | int i; | |
78eed028 | 1830 | struct acpi_video_enumerated_device *active_list; |
4be44fcd LB |
1831 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1832 | union acpi_object *dod = NULL; | |
1833 | union acpi_object *obj; | |
1da177e4 | 1834 | |
90130268 | 1835 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1836 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1837 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1838 | return status; |
1da177e4 LT |
1839 | } |
1840 | ||
50dd0969 | 1841 | dod = buffer.pointer; |
1da177e4 | 1842 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1843 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1844 | status = -EFAULT; |
1845 | goto out; | |
1846 | } | |
1847 | ||
1848 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1849 | dod->package.count)); |
1da177e4 | 1850 | |
78eed028 DT |
1851 | active_list = kcalloc(1 + dod->package.count, |
1852 | sizeof(struct acpi_video_enumerated_device), | |
1853 | GFP_KERNEL); | |
1854 | if (!active_list) { | |
1da177e4 LT |
1855 | status = -ENOMEM; |
1856 | goto out; | |
1857 | } | |
1858 | ||
1859 | count = 0; | |
1860 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1861 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1862 | |
1863 | if (obj->type != ACPI_TYPE_INTEGER) { | |
78eed028 DT |
1864 | printk(KERN_ERR PREFIX |
1865 | "Invalid _DOD data in element %d\n", i); | |
1866 | continue; | |
1da177e4 | 1867 | } |
78eed028 DT |
1868 | |
1869 | active_list[count].value.int_val = obj->integer.value; | |
1870 | active_list[count].bind_info = NULL; | |
4be44fcd LB |
1871 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1872 | (int)obj->integer.value)); | |
1da177e4 LT |
1873 | count++; |
1874 | } | |
1da177e4 | 1875 | |
6044ec88 | 1876 | kfree(video->attached_array); |
4be44fcd | 1877 | |
78eed028 | 1878 | video->attached_array = active_list; |
1da177e4 | 1879 | video->attached_count = count; |
78eed028 DT |
1880 | |
1881 | out: | |
02438d87 | 1882 | kfree(buffer.pointer); |
d550d98d | 1883 | return status; |
1da177e4 LT |
1884 | } |
1885 | ||
4be44fcd LB |
1886 | static int |
1887 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1888 | u32 level_current, u32 event) | |
1da177e4 | 1889 | { |
63f0edfc | 1890 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
1891 | max = max_below = 0; |
1892 | min = min_above = 255; | |
63f0edfc | 1893 | /* Find closest level to level_current */ |
0a3db1ce | 1894 | for (i = 2; i < device->brightness->count; i++) { |
63f0edfc AS |
1895 | l = device->brightness->levels[i]; |
1896 | if (abs(l - level_current) < abs(delta)) { | |
1897 | delta = l - level_current; | |
1898 | if (!delta) | |
1899 | break; | |
1900 | } | |
1901 | } | |
1902 | /* Ajust level_current to closest available level */ | |
1903 | level_current += delta; | |
0a3db1ce | 1904 | for (i = 2; i < device->brightness->count; i++) { |
f4715189 TT |
1905 | l = device->brightness->levels[i]; |
1906 | if (l < min) | |
1907 | min = l; | |
1908 | if (l > max) | |
1909 | max = l; | |
1910 | if (l < min_above && l > level_current) | |
1911 | min_above = l; | |
1912 | if (l > max_below && l < level_current) | |
1913 | max_below = l; | |
1914 | } | |
1915 | ||
1916 | switch (event) { | |
1917 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1918 | return (level_current < max) ? min_above : min; | |
1919 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1920 | return (level_current < max) ? min_above : max; | |
1921 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1922 | return (level_current > min) ? max_below : min; | |
1923 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1924 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1925 | return 0; | |
1926 | default: | |
1927 | return level_current; | |
1928 | } | |
1da177e4 LT |
1929 | } |
1930 | ||
c8890f90 | 1931 | static int |
4be44fcd | 1932 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 | 1933 | { |
27663c58 | 1934 | unsigned long long level_current, level_next; |
c8890f90 ZR |
1935 | int result = -EINVAL; |
1936 | ||
469778c1 | 1937 | if (!device->brightness) |
c8890f90 ZR |
1938 | goto out; |
1939 | ||
1940 | result = acpi_video_device_lcd_get_level_current(device, | |
1941 | &level_current); | |
1942 | if (result) | |
1943 | goto out; | |
1944 | ||
1da177e4 | 1945 | level_next = acpi_video_get_next_level(device, level_current, event); |
c8890f90 | 1946 | |
24450c7a | 1947 | result = acpi_video_device_lcd_set_level(device, level_next); |
c8890f90 ZR |
1948 | |
1949 | out: | |
1950 | if (result) | |
1951 | printk(KERN_ERR PREFIX "Failed to switch the brightness\n"); | |
1952 | ||
1953 | return result; | |
1da177e4 LT |
1954 | } |
1955 | ||
1956 | static int | |
4be44fcd LB |
1957 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1958 | struct acpi_device *device) | |
1da177e4 | 1959 | { |
4be44fcd | 1960 | int status = 0; |
ff102ea9 | 1961 | struct acpi_device *dev; |
1da177e4 LT |
1962 | |
1963 | acpi_video_device_enumerate(video); | |
1964 | ||
ff102ea9 | 1965 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
1966 | |
1967 | status = acpi_video_bus_get_one_device(dev, video); | |
1968 | if (ACPI_FAILURE(status)) { | |
55ac9a01 LM |
1969 | printk(KERN_WARNING PREFIX |
1970 | "Cant attach device"); | |
1da177e4 LT |
1971 | continue; |
1972 | } | |
1da177e4 | 1973 | } |
d550d98d | 1974 | return status; |
1da177e4 LT |
1975 | } |
1976 | ||
4be44fcd | 1977 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1978 | { |
031ec77b | 1979 | acpi_status status; |
1da177e4 LT |
1980 | struct acpi_video_bus *video; |
1981 | ||
1da177e4 LT |
1982 | |
1983 | if (!device || !device->video) | |
d550d98d | 1984 | return -ENOENT; |
1da177e4 LT |
1985 | |
1986 | video = device->video; | |
1987 | ||
1da177e4 LT |
1988 | acpi_video_device_remove_fs(device->dev); |
1989 | ||
90130268 | 1990 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1991 | ACPI_DEVICE_NOTIFY, |
1992 | acpi_video_device_notify); | |
599a52d1 | 1993 | backlight_device_unregister(device->backlight); |
702ed512 ZR |
1994 | if (device->cdev) { |
1995 | sysfs_remove_link(&device->dev->dev.kobj, | |
1996 | "thermal_cooling"); | |
1997 | sysfs_remove_link(&device->cdev->device.kobj, | |
1998 | "device"); | |
1999 | thermal_cooling_device_unregister(device->cdev); | |
2000 | device->cdev = NULL; | |
2001 | } | |
23b0f015 | 2002 | video_output_unregister(device->output_dev); |
ff102ea9 | 2003 | |
d550d98d | 2004 | return 0; |
1da177e4 LT |
2005 | } |
2006 | ||
4be44fcd | 2007 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 2008 | { |
4be44fcd | 2009 | int status; |
ff102ea9 | 2010 | struct acpi_video_device *dev, *next; |
1da177e4 | 2011 | |
bbac81f5 | 2012 | mutex_lock(&video->device_list_lock); |
1da177e4 | 2013 | |
ff102ea9 | 2014 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 2015 | |
ff102ea9 | 2016 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
2017 | if (ACPI_FAILURE(status)) |
2018 | printk(KERN_WARNING PREFIX | |
2019 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 2020 | |
ff102ea9 DT |
2021 | if (dev->brightness) { |
2022 | kfree(dev->brightness->levels); | |
2023 | kfree(dev->brightness); | |
2024 | } | |
2025 | list_del(&dev->entry); | |
2026 | kfree(dev); | |
1da177e4 LT |
2027 | } |
2028 | ||
bbac81f5 | 2029 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 2030 | |
d550d98d | 2031 | return 0; |
1da177e4 LT |
2032 | } |
2033 | ||
2034 | /* acpi_video interface */ | |
2035 | ||
4be44fcd | 2036 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 2037 | { |
a21101c4 | 2038 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
2039 | } |
2040 | ||
4be44fcd | 2041 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
2042 | { |
2043 | return acpi_video_bus_DOS(video, 0, 1); | |
2044 | } | |
2045 | ||
7015558f | 2046 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event) |
1da177e4 | 2047 | { |
7015558f | 2048 | struct acpi_video_bus *video = acpi_driver_data(device); |
e9dab196 LY |
2049 | struct input_dev *input; |
2050 | int keycode; | |
2051 | ||
1da177e4 | 2052 | if (!video) |
d550d98d | 2053 | return; |
1da177e4 | 2054 | |
e9dab196 | 2055 | input = video->input; |
1da177e4 LT |
2056 | |
2057 | switch (event) { | |
98fb8fe1 | 2058 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 2059 | * most likely via hotkey. */ |
14e04fb3 | 2060 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2061 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
2062 | break; |
2063 | ||
98fb8fe1 | 2064 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
2065 | * connector. */ |
2066 | acpi_video_device_enumerate(video); | |
2067 | acpi_video_device_rebind(video); | |
14e04fb3 | 2068 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2069 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
2070 | break; |
2071 | ||
4be44fcd | 2072 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
25c87f7f | 2073 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2074 | keycode = KEY_SWITCHVIDEOMODE; |
2075 | break; | |
4be44fcd | 2076 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
25c87f7f | 2077 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2078 | keycode = KEY_VIDEO_NEXT; |
2079 | break; | |
4be44fcd | 2080 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
14e04fb3 | 2081 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2082 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
2083 | break; |
2084 | ||
2085 | default: | |
e9dab196 | 2086 | keycode = KEY_UNKNOWN; |
1da177e4 | 2087 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 2088 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
2089 | break; |
2090 | } | |
2091 | ||
7761f638 | 2092 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
2093 | input_report_key(input, keycode, 1); |
2094 | input_sync(input); | |
2095 | input_report_key(input, keycode, 0); | |
2096 | input_sync(input); | |
2097 | ||
d550d98d | 2098 | return; |
1da177e4 LT |
2099 | } |
2100 | ||
4be44fcd | 2101 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 2102 | { |
50dd0969 | 2103 | struct acpi_video_device *video_device = data; |
4be44fcd | 2104 | struct acpi_device *device = NULL; |
e9dab196 LY |
2105 | struct acpi_video_bus *bus; |
2106 | struct input_dev *input; | |
2107 | int keycode; | |
1da177e4 | 2108 | |
1da177e4 | 2109 | if (!video_device) |
d550d98d | 2110 | return; |
1da177e4 | 2111 | |
e6afa0de | 2112 | device = video_device->dev; |
e9dab196 LY |
2113 | bus = video_device->video; |
2114 | input = bus->input; | |
1da177e4 LT |
2115 | |
2116 | switch (event) { | |
4be44fcd | 2117 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
8a681a4d ZR |
2118 | if (brightness_switch_enabled) |
2119 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 2120 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2121 | keycode = KEY_BRIGHTNESS_CYCLE; |
2122 | break; | |
4be44fcd | 2123 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
8a681a4d ZR |
2124 | if (brightness_switch_enabled) |
2125 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2126 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2127 | keycode = KEY_BRIGHTNESSUP; |
2128 | break; | |
4be44fcd | 2129 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
8a681a4d ZR |
2130 | if (brightness_switch_enabled) |
2131 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2132 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2133 | keycode = KEY_BRIGHTNESSDOWN; |
2134 | break; | |
4be44fcd | 2135 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
8a681a4d ZR |
2136 | if (brightness_switch_enabled) |
2137 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2138 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2139 | keycode = KEY_BRIGHTNESS_ZERO; |
2140 | break; | |
4be44fcd | 2141 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
8a681a4d ZR |
2142 | if (brightness_switch_enabled) |
2143 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 2144 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2145 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
2146 | break; |
2147 | default: | |
e9dab196 | 2148 | keycode = KEY_UNKNOWN; |
1da177e4 | 2149 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
4be44fcd | 2150 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
2151 | break; |
2152 | } | |
e9dab196 | 2153 | |
7761f638 | 2154 | acpi_notifier_call_chain(device, event, 0); |
e9dab196 LY |
2155 | input_report_key(input, keycode, 1); |
2156 | input_sync(input); | |
2157 | input_report_key(input, keycode, 0); | |
2158 | input_sync(input); | |
2159 | ||
d550d98d | 2160 | return; |
1da177e4 LT |
2161 | } |
2162 | ||
e6d9da1d | 2163 | static int instance; |
863c1490 MG |
2164 | static int acpi_video_resume(struct acpi_device *device) |
2165 | { | |
2166 | struct acpi_video_bus *video; | |
2167 | struct acpi_video_device *video_device; | |
2168 | int i; | |
2169 | ||
2170 | if (!device || !acpi_driver_data(device)) | |
2171 | return -EINVAL; | |
2172 | ||
2173 | video = acpi_driver_data(device); | |
2174 | ||
2175 | for (i = 0; i < video->attached_count; i++) { | |
2176 | video_device = video->attached_array[i].bind_info; | |
2177 | if (video_device && video_device->backlight) | |
2178 | acpi_video_set_brightness(video_device->backlight); | |
2179 | } | |
2180 | return AE_OK; | |
2181 | } | |
2182 | ||
4be44fcd | 2183 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 2184 | { |
f51e8391 | 2185 | struct acpi_video_bus *video; |
e9dab196 | 2186 | struct input_dev *input; |
f51e8391 | 2187 | int error; |
1da177e4 | 2188 | |
36bcbec7 | 2189 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 2190 | if (!video) |
d550d98d | 2191 | return -ENOMEM; |
1da177e4 | 2192 | |
e6d9da1d ZR |
2193 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
2194 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
2195 | if (instance) | |
2196 | device->pnp.bus_id[3] = '0' + instance; | |
2197 | instance ++; | |
2198 | } | |
f3b39f13 ZY |
2199 | /* a hack to fix the duplicate name "VGA" problem on Pa 3553 */ |
2200 | if (!strcmp(device->pnp.bus_id, "VGA")) { | |
2201 | if (instance) | |
2202 | device->pnp.bus_id[3] = '0' + instance; | |
2203 | instance++; | |
2204 | } | |
e6d9da1d | 2205 | |
e6afa0de | 2206 | video->device = device; |
1da177e4 LT |
2207 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
2208 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 2209 | device->driver_data = video; |
1da177e4 LT |
2210 | |
2211 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
2212 | error = acpi_video_bus_check(video); |
2213 | if (error) | |
2214 | goto err_free_video; | |
1da177e4 | 2215 | |
f51e8391 DT |
2216 | error = acpi_video_bus_add_fs(device); |
2217 | if (error) | |
2218 | goto err_free_video; | |
1da177e4 | 2219 | |
bbac81f5 | 2220 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
2221 | INIT_LIST_HEAD(&video->video_device_list); |
2222 | ||
2223 | acpi_video_bus_get_devices(video, device); | |
2224 | acpi_video_bus_start_devices(video); | |
2225 | ||
e9dab196 | 2226 | video->input = input = input_allocate_device(); |
f51e8391 DT |
2227 | if (!input) { |
2228 | error = -ENOMEM; | |
7015558f | 2229 | goto err_stop_video; |
f51e8391 | 2230 | } |
e9dab196 LY |
2231 | |
2232 | snprintf(video->phys, sizeof(video->phys), | |
2233 | "%s/video/input0", acpi_device_hid(video->device)); | |
2234 | ||
2235 | input->name = acpi_device_name(video->device); | |
2236 | input->phys = video->phys; | |
2237 | input->id.bustype = BUS_HOST; | |
2238 | input->id.product = 0x06; | |
91c05c66 | 2239 | input->dev.parent = &device->dev; |
e9dab196 LY |
2240 | input->evbit[0] = BIT(EV_KEY); |
2241 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
2242 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
2243 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
2244 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
2245 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
2246 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
2247 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
2248 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
2249 | set_bit(KEY_UNKNOWN, input->keybit); | |
e9dab196 | 2250 | |
f51e8391 DT |
2251 | error = input_register_device(input); |
2252 | if (error) | |
2253 | goto err_free_input_dev; | |
e9dab196 | 2254 | |
1da177e4 | 2255 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
2256 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
2257 | video->flags.multihead ? "yes" : "no", | |
2258 | video->flags.rom ? "yes" : "no", | |
2259 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 2260 | |
f51e8391 DT |
2261 | return 0; |
2262 | ||
2263 | err_free_input_dev: | |
2264 | input_free_device(input); | |
f51e8391 DT |
2265 | err_stop_video: |
2266 | acpi_video_bus_stop_devices(video); | |
2267 | acpi_video_bus_put_devices(video); | |
2268 | kfree(video->attached_array); | |
2269 | acpi_video_bus_remove_fs(device); | |
2270 | err_free_video: | |
2271 | kfree(video); | |
db89b4f0 | 2272 | device->driver_data = NULL; |
1da177e4 | 2273 | |
f51e8391 | 2274 | return error; |
1da177e4 LT |
2275 | } |
2276 | ||
4be44fcd | 2277 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 2278 | { |
4be44fcd | 2279 | struct acpi_video_bus *video = NULL; |
1da177e4 | 2280 | |
1da177e4 LT |
2281 | |
2282 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 2283 | return -EINVAL; |
1da177e4 | 2284 | |
50dd0969 | 2285 | video = acpi_driver_data(device); |
1da177e4 LT |
2286 | |
2287 | acpi_video_bus_stop_devices(video); | |
1da177e4 LT |
2288 | acpi_video_bus_put_devices(video); |
2289 | acpi_video_bus_remove_fs(device); | |
2290 | ||
e9dab196 | 2291 | input_unregister_device(video->input); |
6044ec88 | 2292 | kfree(video->attached_array); |
1da177e4 LT |
2293 | kfree(video); |
2294 | ||
d550d98d | 2295 | return 0; |
1da177e4 LT |
2296 | } |
2297 | ||
74a365b3 MG |
2298 | static int __init intel_opregion_present(void) |
2299 | { | |
2300 | #if defined(CONFIG_DRM_I915) || defined(CONFIG_DRM_I915_MODULE) | |
2301 | struct pci_dev *dev = NULL; | |
2302 | u32 address; | |
2303 | ||
2304 | for_each_pci_dev(dev) { | |
2305 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
2306 | continue; | |
2307 | if (dev->vendor != PCI_VENDOR_ID_INTEL) | |
2308 | continue; | |
2309 | pci_read_config_dword(dev, 0xfc, &address); | |
2310 | if (!address) | |
2311 | continue; | |
2312 | return 1; | |
2313 | } | |
2314 | #endif | |
2315 | return 0; | |
2316 | } | |
2317 | ||
2318 | int acpi_video_register(void) | |
1da177e4 | 2319 | { |
4be44fcd | 2320 | int result = 0; |
1da177e4 | 2321 | |
1da177e4 LT |
2322 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); |
2323 | if (!acpi_video_dir) | |
d550d98d | 2324 | return -ENODEV; |
1da177e4 LT |
2325 | |
2326 | result = acpi_bus_register_driver(&acpi_video_bus); | |
2327 | if (result < 0) { | |
2328 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 2329 | return -ENODEV; |
1da177e4 LT |
2330 | } |
2331 | ||
d550d98d | 2332 | return 0; |
1da177e4 | 2333 | } |
74a365b3 MG |
2334 | EXPORT_SYMBOL(acpi_video_register); |
2335 | ||
2336 | /* | |
2337 | * This is kind of nasty. Hardware using Intel chipsets may require | |
2338 | * the video opregion code to be run first in order to initialise | |
2339 | * state before any ACPI video calls are made. To handle this we defer | |
2340 | * registration of the video class until the opregion code has run. | |
2341 | */ | |
2342 | ||
2343 | static int __init acpi_video_init(void) | |
2344 | { | |
45cb50e6 ZR |
2345 | dmi_check_system(video_dmi_table); |
2346 | ||
74a365b3 MG |
2347 | if (intel_opregion_present()) |
2348 | return 0; | |
2349 | ||
2350 | return acpi_video_register(); | |
2351 | } | |
1da177e4 | 2352 | |
3b1c1c11 | 2353 | void __exit acpi_video_exit(void) |
1da177e4 | 2354 | { |
1da177e4 LT |
2355 | |
2356 | acpi_bus_unregister_driver(&acpi_video_bus); | |
2357 | ||
2358 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
2359 | ||
d550d98d | 2360 | return; |
1da177e4 | 2361 | } |
3b1c1c11 | 2362 | EXPORT_SYMBOL(acpi_video_exit); |
1da177e4 LT |
2363 | |
2364 | module_init(acpi_video_init); | |
2365 | module_exit(acpi_video_exit); |