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