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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> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
1da177e4 | 43 | #include <asm/uaccess.h> |
eb27cae8 | 44 | #include <linux/dmi.h> |
1da177e4 LT |
45 | #include <acpi/acpi_bus.h> |
46 | #include <acpi/acpi_drivers.h> | |
ac7729da | 47 | #include <linux/suspend.h> |
e92a7162 | 48 | #include <acpi/video.h> |
1da177e4 | 49 | |
a192a958 LB |
50 | #define PREFIX "ACPI: " |
51 | ||
1da177e4 | 52 | #define ACPI_VIDEO_CLASS "video" |
1da177e4 LT |
53 | #define ACPI_VIDEO_BUS_NAME "Video Bus" |
54 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" | |
55 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 | |
56 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 | |
57 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 | |
58 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 | |
59 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 | |
60 | ||
f4715189 TT |
61 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85 |
62 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 | |
63 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 | |
64 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88 | |
65 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89 | |
1da177e4 | 66 | |
2f3d000a | 67 | #define MAX_NAME_LEN 20 |
1da177e4 | 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 | ||
c504f8cb ZR |
79 | /* |
80 | * By default, we don't allow duplicate ACPI video bus devices | |
81 | * under the same VGA controller | |
82 | */ | |
83 | static int allow_duplicates; | |
84 | module_param(allow_duplicates, bool, 0644); | |
85 | ||
86e437f0 | 86 | static int register_count = 0; |
4be44fcd LB |
87 | static int acpi_video_bus_add(struct acpi_device *device); |
88 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
7015558f | 89 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event); |
1da177e4 | 90 | |
1ba90e3a TR |
91 | static const struct acpi_device_id video_device_ids[] = { |
92 | {ACPI_VIDEO_HID, 0}, | |
93 | {"", 0}, | |
94 | }; | |
95 | MODULE_DEVICE_TABLE(acpi, video_device_ids); | |
96 | ||
1da177e4 | 97 | static struct acpi_driver acpi_video_bus = { |
c2b6705b | 98 | .name = "video", |
1da177e4 | 99 | .class = ACPI_VIDEO_CLASS, |
1ba90e3a | 100 | .ids = video_device_ids, |
1da177e4 LT |
101 | .ops = { |
102 | .add = acpi_video_bus_add, | |
103 | .remove = acpi_video_bus_remove, | |
7015558f | 104 | .notify = acpi_video_bus_notify, |
4be44fcd | 105 | }, |
1da177e4 LT |
106 | }; |
107 | ||
108 | struct acpi_video_bus_flags { | |
4be44fcd LB |
109 | u8 multihead:1; /* can switch video heads */ |
110 | u8 rom:1; /* can retrieve a video rom */ | |
111 | u8 post:1; /* can configure the head to */ | |
112 | u8 reserved:5; | |
1da177e4 LT |
113 | }; |
114 | ||
115 | struct acpi_video_bus_cap { | |
4be44fcd LB |
116 | u8 _DOS:1; /*Enable/Disable output switching */ |
117 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
118 | u8 _ROM:1; /*Get ROM Data */ | |
119 | u8 _GPD:1; /*Get POST Device */ | |
120 | u8 _SPD:1; /*Set POST Device */ | |
121 | u8 _VPO:1; /*Video POST Options */ | |
122 | u8 reserved:2; | |
1da177e4 LT |
123 | }; |
124 | ||
4be44fcd LB |
125 | struct acpi_video_device_attrib { |
126 | u32 display_index:4; /* A zero-based instance of the Display */ | |
98fb8fe1 | 127 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
4be44fcd | 128 | u32 display_type:4; /*Describe the specific type in use */ |
98fb8fe1 | 129 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
4be44fcd LB |
130 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
131 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
132 | the VGA device. */ | |
133 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
134 | u32 reserved:10; /*Must be 0 */ | |
135 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
136 | }; |
137 | ||
138 | struct acpi_video_enumerated_device { | |
139 | union { | |
140 | u32 int_val; | |
4be44fcd | 141 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
142 | } value; |
143 | struct acpi_video_device *bind_info; | |
144 | }; | |
145 | ||
146 | struct acpi_video_bus { | |
e6afa0de | 147 | struct acpi_device *device; |
4be44fcd | 148 | u8 dos_setting; |
1da177e4 | 149 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
150 | u8 attached_count; |
151 | struct acpi_video_bus_cap cap; | |
1da177e4 | 152 | struct acpi_video_bus_flags flags; |
4be44fcd | 153 | struct list_head video_device_list; |
bbac81f5 | 154 | struct mutex device_list_lock; /* protects video_device_list */ |
6e37c658 | 155 | #ifdef CONFIG_ACPI_PROCFS |
4be44fcd | 156 | struct proc_dir_entry *dir; |
6e37c658 | 157 | #endif |
e9dab196 LY |
158 | struct input_dev *input; |
159 | char phys[32]; /* for input device */ | |
ac7729da | 160 | struct notifier_block pm_nb; |
1da177e4 LT |
161 | }; |
162 | ||
163 | struct acpi_video_device_flags { | |
4be44fcd LB |
164 | u8 crt:1; |
165 | u8 lcd:1; | |
166 | u8 tvout:1; | |
82cae999 | 167 | u8 dvi:1; |
4be44fcd LB |
168 | u8 bios:1; |
169 | u8 unknown:1; | |
82cae999 | 170 | u8 reserved:2; |
1da177e4 LT |
171 | }; |
172 | ||
173 | struct acpi_video_device_cap { | |
4be44fcd LB |
174 | u8 _ADR:1; /*Return the unique ID */ |
175 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
176 | u8 _BCM:1; /*Set the brightness level */ | |
2f3d000a | 177 | u8 _BQC:1; /* Get current brightness level */ |
c60d638e | 178 | u8 _BCQ:1; /* Some buggy BIOS uses _BCQ instead of _BQC */ |
4be44fcd LB |
179 | u8 _DDC:1; /*Return the EDID for this device */ |
180 | u8 _DCS:1; /*Return status of output device */ | |
181 | u8 _DGS:1; /*Query graphics state */ | |
182 | u8 _DSS:1; /*Device state set */ | |
1da177e4 LT |
183 | }; |
184 | ||
d32f6947 ZR |
185 | struct acpi_video_brightness_flags { |
186 | u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */ | |
d80fb99f | 187 | u8 _BCL_reversed:1; /* _BCL package is in a reversed order*/ |
1a7c618a ZR |
188 | u8 _BCL_use_index:1; /* levels in _BCL are index values */ |
189 | u8 _BCM_use_index:1; /* input of _BCM is an index value */ | |
190 | u8 _BQC_use_index:1; /* _BQC returns an index value */ | |
d32f6947 ZR |
191 | }; |
192 | ||
1da177e4 | 193 | struct acpi_video_device_brightness { |
4be44fcd LB |
194 | int curr; |
195 | int count; | |
196 | int *levels; | |
d32f6947 | 197 | struct acpi_video_brightness_flags flags; |
1da177e4 LT |
198 | }; |
199 | ||
200 | struct acpi_video_device { | |
4be44fcd LB |
201 | unsigned long device_id; |
202 | struct acpi_video_device_flags flags; | |
203 | struct acpi_video_device_cap cap; | |
204 | struct list_head entry; | |
205 | struct acpi_video_bus *video; | |
206 | struct acpi_device *dev; | |
1da177e4 | 207 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 208 | struct backlight_device *backlight; |
4a703a8f | 209 | struct thermal_cooling_device *cooling_dev; |
23b0f015 | 210 | struct output_device *output_dev; |
1da177e4 LT |
211 | }; |
212 | ||
6e37c658 | 213 | #ifdef CONFIG_ACPI_PROCFS |
1da177e4 LT |
214 | /* bus */ |
215 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); | |
070d8eb1 | 216 | static const struct file_operations acpi_video_bus_info_fops = { |
cf7acfab | 217 | .owner = THIS_MODULE, |
4be44fcd LB |
218 | .open = acpi_video_bus_info_open_fs, |
219 | .read = seq_read, | |
220 | .llseek = seq_lseek, | |
221 | .release = single_release, | |
1da177e4 LT |
222 | }; |
223 | ||
224 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); | |
070d8eb1 | 225 | static const struct file_operations acpi_video_bus_ROM_fops = { |
cf7acfab | 226 | .owner = THIS_MODULE, |
4be44fcd LB |
227 | .open = acpi_video_bus_ROM_open_fs, |
228 | .read = seq_read, | |
229 | .llseek = seq_lseek, | |
230 | .release = single_release, | |
1da177e4 LT |
231 | }; |
232 | ||
4be44fcd LB |
233 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, |
234 | struct file *file); | |
070d8eb1 | 235 | static const struct file_operations acpi_video_bus_POST_info_fops = { |
cf7acfab | 236 | .owner = THIS_MODULE, |
4be44fcd LB |
237 | .open = acpi_video_bus_POST_info_open_fs, |
238 | .read = seq_read, | |
239 | .llseek = seq_lseek, | |
240 | .release = single_release, | |
1da177e4 LT |
241 | }; |
242 | ||
243 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); | |
c07c9a78 | 244 | static ssize_t acpi_video_bus_write_POST(struct file *file, |
b7171ae7 JE |
245 | const char __user *buffer, size_t count, loff_t *data); |
246 | static const struct file_operations acpi_video_bus_POST_fops = { | |
cf7acfab | 247 | .owner = THIS_MODULE, |
4be44fcd LB |
248 | .open = acpi_video_bus_POST_open_fs, |
249 | .read = seq_read, | |
b7171ae7 | 250 | .write = acpi_video_bus_write_POST, |
4be44fcd LB |
251 | .llseek = seq_lseek, |
252 | .release = single_release, | |
1da177e4 LT |
253 | }; |
254 | ||
1da177e4 | 255 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
c07c9a78 | 256 | static ssize_t acpi_video_bus_write_DOS(struct file *file, |
b7171ae7 JE |
257 | const char __user *buffer, size_t count, loff_t *data); |
258 | static const struct file_operations acpi_video_bus_DOS_fops = { | |
cf7acfab | 259 | .owner = THIS_MODULE, |
4be44fcd LB |
260 | .open = acpi_video_bus_DOS_open_fs, |
261 | .read = seq_read, | |
b7171ae7 | 262 | .write = acpi_video_bus_write_DOS, |
4be44fcd LB |
263 | .llseek = seq_lseek, |
264 | .release = single_release, | |
1da177e4 LT |
265 | }; |
266 | ||
267 | /* device */ | |
4be44fcd LB |
268 | static int acpi_video_device_info_open_fs(struct inode *inode, |
269 | struct file *file); | |
070d8eb1 | 270 | static const struct file_operations acpi_video_device_info_fops = { |
cf7acfab | 271 | .owner = THIS_MODULE, |
4be44fcd LB |
272 | .open = acpi_video_device_info_open_fs, |
273 | .read = seq_read, | |
274 | .llseek = seq_lseek, | |
275 | .release = single_release, | |
1da177e4 LT |
276 | }; |
277 | ||
4be44fcd LB |
278 | static int acpi_video_device_state_open_fs(struct inode *inode, |
279 | struct file *file); | |
c07c9a78 | 280 | static ssize_t acpi_video_device_write_state(struct file *file, |
b7171ae7 JE |
281 | const char __user *buffer, size_t count, loff_t *data); |
282 | static const struct file_operations acpi_video_device_state_fops = { | |
cf7acfab | 283 | .owner = THIS_MODULE, |
4be44fcd LB |
284 | .open = acpi_video_device_state_open_fs, |
285 | .read = seq_read, | |
b7171ae7 | 286 | .write = acpi_video_device_write_state, |
4be44fcd LB |
287 | .llseek = seq_lseek, |
288 | .release = single_release, | |
1da177e4 LT |
289 | }; |
290 | ||
4be44fcd LB |
291 | static int acpi_video_device_brightness_open_fs(struct inode *inode, |
292 | struct file *file); | |
c07c9a78 | 293 | static ssize_t acpi_video_device_write_brightness(struct file *file, |
b7171ae7 | 294 | const char __user *buffer, size_t count, loff_t *data); |
828c0950 | 295 | static const struct file_operations acpi_video_device_brightness_fops = { |
cf7acfab | 296 | .owner = THIS_MODULE, |
4be44fcd LB |
297 | .open = acpi_video_device_brightness_open_fs, |
298 | .read = seq_read, | |
b7171ae7 | 299 | .write = acpi_video_device_write_brightness, |
4be44fcd LB |
300 | .llseek = seq_lseek, |
301 | .release = single_release, | |
1da177e4 LT |
302 | }; |
303 | ||
4be44fcd LB |
304 | static int acpi_video_device_EDID_open_fs(struct inode *inode, |
305 | struct file *file); | |
070d8eb1 | 306 | static const struct file_operations acpi_video_device_EDID_fops = { |
cf7acfab | 307 | .owner = THIS_MODULE, |
4be44fcd LB |
308 | .open = acpi_video_device_EDID_open_fs, |
309 | .read = seq_read, | |
310 | .llseek = seq_lseek, | |
311 | .release = single_release, | |
1da177e4 | 312 | }; |
6e37c658 | 313 | #endif /* CONFIG_ACPI_PROCFS */ |
1da177e4 | 314 | |
b7171ae7 | 315 | static const char device_decode[][30] = { |
1da177e4 LT |
316 | "motherboard VGA device", |
317 | "PCI VGA device", | |
318 | "AGP VGA device", | |
319 | "UNKNOWN", | |
320 | }; | |
321 | ||
4be44fcd LB |
322 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
323 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
324 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
325 | struct acpi_video_device *device); | |
1da177e4 | 326 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
2f3d000a YL |
327 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
328 | int level); | |
329 | static int acpi_video_device_lcd_get_level_current( | |
330 | struct acpi_video_device *device, | |
70287db8 | 331 | unsigned long long *level, int init); |
4be44fcd LB |
332 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
333 | u32 level_current, u32 event); | |
c8890f90 | 334 | static int acpi_video_switch_brightness(struct acpi_video_device *device, |
4be44fcd | 335 | int event); |
23b0f015 | 336 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
27663c58 | 337 | unsigned long long *state); |
23b0f015 LY |
338 | static int acpi_video_output_get(struct output_device *od); |
339 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 340 | |
2f3d000a YL |
341 | /*backlight device sysfs support*/ |
342 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
343 | { | |
27663c58 | 344 | unsigned long long cur_level; |
38531e6f | 345 | int i; |
2f3d000a | 346 | struct acpi_video_device *vd = |
655bfd7a | 347 | (struct acpi_video_device *)bl_get_data(bd); |
c8890f90 | 348 | |
70287db8 | 349 | if (acpi_video_device_lcd_get_level_current(vd, &cur_level, 0)) |
c8890f90 | 350 | return -EINVAL; |
38531e6f MG |
351 | for (i = 2; i < vd->brightness->count; i++) { |
352 | if (vd->brightness->levels[i] == cur_level) | |
353 | /* The first two entries are special - see page 575 | |
354 | of the ACPI spec 3.0 */ | |
355 | return i-2; | |
356 | } | |
357 | return 0; | |
2f3d000a YL |
358 | } |
359 | ||
360 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
361 | { | |
24450c7a | 362 | int request_level = bd->props.brightness + 2; |
2f3d000a | 363 | struct acpi_video_device *vd = |
655bfd7a | 364 | (struct acpi_video_device *)bl_get_data(bd); |
24450c7a ZR |
365 | |
366 | return acpi_video_device_lcd_set_level(vd, | |
367 | vd->brightness->levels[request_level]); | |
2f3d000a YL |
368 | } |
369 | ||
599a52d1 RP |
370 | static struct backlight_ops acpi_backlight_ops = { |
371 | .get_brightness = acpi_video_get_brightness, | |
372 | .update_status = acpi_video_set_brightness, | |
373 | }; | |
374 | ||
23b0f015 LY |
375 | /*video output device sysfs support*/ |
376 | static int acpi_video_output_get(struct output_device *od) | |
377 | { | |
27663c58 | 378 | unsigned long long state; |
23b0f015 | 379 | struct acpi_video_device *vd = |
60043428 | 380 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
381 | acpi_video_device_get_state(vd, &state); |
382 | return (int)state; | |
383 | } | |
384 | ||
385 | static int acpi_video_output_set(struct output_device *od) | |
386 | { | |
387 | unsigned long state = od->request_state; | |
388 | struct acpi_video_device *vd= | |
60043428 | 389 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
390 | return acpi_video_device_set_state(vd, state); |
391 | } | |
392 | ||
393 | static struct output_properties acpi_output_properties = { | |
394 | .set_state = acpi_video_output_set, | |
395 | .get_status = acpi_video_output_get, | |
396 | }; | |
702ed512 ZR |
397 | |
398 | ||
399 | /* thermal cooling device callbacks */ | |
4a703a8f | 400 | static int video_get_max_state(struct thermal_cooling_device *cooling_dev, unsigned |
6503e5df | 401 | long *state) |
702ed512 | 402 | { |
4a703a8f | 403 | struct acpi_device *device = cooling_dev->devdata; |
702ed512 ZR |
404 | struct acpi_video_device *video = acpi_driver_data(device); |
405 | ||
6503e5df MG |
406 | *state = video->brightness->count - 3; |
407 | return 0; | |
702ed512 ZR |
408 | } |
409 | ||
4a703a8f | 410 | static int video_get_cur_state(struct thermal_cooling_device *cooling_dev, unsigned |
6503e5df | 411 | long *state) |
702ed512 | 412 | { |
4a703a8f | 413 | struct acpi_device *device = cooling_dev->devdata; |
702ed512 | 414 | struct acpi_video_device *video = acpi_driver_data(device); |
27663c58 | 415 | unsigned long long level; |
6503e5df | 416 | int offset; |
702ed512 | 417 | |
70287db8 | 418 | if (acpi_video_device_lcd_get_level_current(video, &level, 0)) |
c8890f90 | 419 | return -EINVAL; |
6503e5df MG |
420 | for (offset = 2; offset < video->brightness->count; offset++) |
421 | if (level == video->brightness->levels[offset]) { | |
422 | *state = video->brightness->count - offset - 1; | |
423 | return 0; | |
424 | } | |
702ed512 ZR |
425 | |
426 | return -EINVAL; | |
427 | } | |
428 | ||
429 | static int | |
4a703a8f | 430 | video_set_cur_state(struct thermal_cooling_device *cooling_dev, unsigned long state) |
702ed512 | 431 | { |
4a703a8f | 432 | struct acpi_device *device = cooling_dev->devdata; |
702ed512 ZR |
433 | struct acpi_video_device *video = acpi_driver_data(device); |
434 | int level; | |
435 | ||
436 | if ( state >= video->brightness->count - 2) | |
437 | return -EINVAL; | |
438 | ||
439 | state = video->brightness->count - state; | |
440 | level = video->brightness->levels[state -1]; | |
441 | return acpi_video_device_lcd_set_level(video, level); | |
442 | } | |
443 | ||
444 | static struct thermal_cooling_device_ops video_cooling_ops = { | |
445 | .get_max_state = video_get_max_state, | |
446 | .get_cur_state = video_get_cur_state, | |
447 | .set_cur_state = video_set_cur_state, | |
448 | }; | |
449 | ||
1da177e4 LT |
450 | /* -------------------------------------------------------------------------- |
451 | Video Management | |
452 | -------------------------------------------------------------------------- */ | |
453 | ||
454 | /* device */ | |
455 | ||
1da177e4 | 456 | static int |
4be44fcd | 457 | acpi_video_device_get_state(struct acpi_video_device *device, |
27663c58 | 458 | unsigned long long *state) |
1da177e4 | 459 | { |
4be44fcd | 460 | int status; |
1da177e4 | 461 | |
90130268 | 462 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 463 | |
d550d98d | 464 | return status; |
1da177e4 LT |
465 | } |
466 | ||
467 | static int | |
4be44fcd | 468 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 469 | { |
4be44fcd LB |
470 | int status; |
471 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
472 | struct acpi_object_list args = { 1, &arg0 }; | |
27663c58 | 473 | unsigned long long ret; |
1da177e4 | 474 | |
1da177e4 LT |
475 | |
476 | arg0.integer.value = state; | |
90130268 | 477 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 478 | |
d550d98d | 479 | return status; |
1da177e4 LT |
480 | } |
481 | ||
482 | static int | |
4be44fcd LB |
483 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
484 | union acpi_object **levels) | |
1da177e4 | 485 | { |
4be44fcd LB |
486 | int status; |
487 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
488 | union acpi_object *obj; | |
1da177e4 | 489 | |
1da177e4 LT |
490 | |
491 | *levels = NULL; | |
492 | ||
90130268 | 493 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 494 | if (!ACPI_SUCCESS(status)) |
d550d98d | 495 | return status; |
4be44fcd | 496 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 497 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 498 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
499 | status = -EFAULT; |
500 | goto err; | |
501 | } | |
502 | ||
503 | *levels = obj; | |
504 | ||
d550d98d | 505 | return 0; |
1da177e4 | 506 | |
4be44fcd | 507 | err: |
6044ec88 | 508 | kfree(buffer.pointer); |
1da177e4 | 509 | |
d550d98d | 510 | return status; |
1da177e4 LT |
511 | } |
512 | ||
513 | static int | |
4be44fcd | 514 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 515 | { |
24450c7a | 516 | int status; |
4be44fcd LB |
517 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
518 | struct acpi_object_list args = { 1, &arg0 }; | |
9e6dada9 | 519 | int state; |
1da177e4 | 520 | |
1da177e4 | 521 | arg0.integer.value = level; |
1da177e4 | 522 | |
24450c7a ZR |
523 | status = acpi_evaluate_object(device->dev->handle, "_BCM", |
524 | &args, NULL); | |
525 | if (ACPI_FAILURE(status)) { | |
526 | ACPI_ERROR((AE_INFO, "Evaluating _BCM failed")); | |
527 | return -EIO; | |
528 | } | |
529 | ||
4500ca8e | 530 | device->brightness->curr = level; |
9e6dada9 | 531 | for (state = 2; state < device->brightness->count; state++) |
24450c7a | 532 | if (level == device->brightness->levels[state]) { |
1a7c618a ZR |
533 | if (device->backlight) |
534 | device->backlight->props.brightness = state - 2; | |
24450c7a ZR |
535 | return 0; |
536 | } | |
9e6dada9 | 537 | |
24450c7a ZR |
538 | ACPI_ERROR((AE_INFO, "Current brightness invalid")); |
539 | return -EINVAL; | |
1da177e4 LT |
540 | } |
541 | ||
45cb50e6 ZR |
542 | /* |
543 | * For some buggy _BQC methods, we need to add a constant value to | |
544 | * the _BQC return value to get the actual current brightness level | |
545 | */ | |
546 | ||
547 | static int bqc_offset_aml_bug_workaround; | |
548 | static int __init video_set_bqc_offset(const struct dmi_system_id *d) | |
549 | { | |
550 | bqc_offset_aml_bug_workaround = 9; | |
551 | return 0; | |
552 | } | |
553 | ||
554 | static struct dmi_system_id video_dmi_table[] __initdata = { | |
555 | /* | |
556 | * Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121 | |
557 | */ | |
558 | { | |
559 | .callback = video_set_bqc_offset, | |
560 | .ident = "Acer Aspire 5720", | |
561 | .matches = { | |
562 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
563 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"), | |
564 | }, | |
565 | }, | |
5afc4abe LB |
566 | { |
567 | .callback = video_set_bqc_offset, | |
568 | .ident = "Acer Aspire 5710Z", | |
569 | .matches = { | |
570 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
571 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710Z"), | |
572 | }, | |
573 | }, | |
34ac272b ZR |
574 | { |
575 | .callback = video_set_bqc_offset, | |
576 | .ident = "eMachines E510", | |
577 | .matches = { | |
578 | DMI_MATCH(DMI_BOARD_VENDOR, "EMACHINES"), | |
579 | DMI_MATCH(DMI_PRODUCT_NAME, "eMachines E510"), | |
580 | }, | |
581 | }, | |
93bcece2 ZR |
582 | { |
583 | .callback = video_set_bqc_offset, | |
584 | .ident = "Acer Aspire 5315", | |
585 | .matches = { | |
586 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
587 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"), | |
588 | }, | |
589 | }, | |
152a4e63 ZR |
590 | { |
591 | .callback = video_set_bqc_offset, | |
592 | .ident = "Acer Aspire 7720", | |
593 | .matches = { | |
594 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
595 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"), | |
596 | }, | |
597 | }, | |
45cb50e6 ZR |
598 | {} |
599 | }; | |
600 | ||
1da177e4 | 601 | static int |
4be44fcd | 602 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
70287db8 | 603 | unsigned long long *level, int init) |
1da177e4 | 604 | { |
c8890f90 | 605 | acpi_status status = AE_OK; |
4e231fa4 | 606 | int i; |
c8890f90 | 607 | |
c60d638e ZR |
608 | if (device->cap._BQC || device->cap._BCQ) { |
609 | char *buf = device->cap._BQC ? "_BQC" : "_BCQ"; | |
610 | ||
611 | status = acpi_evaluate_integer(device->dev->handle, buf, | |
c8890f90 ZR |
612 | NULL, level); |
613 | if (ACPI_SUCCESS(status)) { | |
1a7c618a ZR |
614 | if (device->brightness->flags._BQC_use_index) { |
615 | if (device->brightness->flags._BCL_reversed) | |
616 | *level = device->brightness->count | |
617 | - 3 - (*level); | |
618 | *level = device->brightness->levels[*level + 2]; | |
619 | ||
620 | } | |
45cb50e6 | 621 | *level += bqc_offset_aml_bug_workaround; |
4e231fa4 VS |
622 | for (i = 2; i < device->brightness->count; i++) |
623 | if (device->brightness->levels[i] == *level) { | |
624 | device->brightness->curr = *level; | |
625 | return 0; | |
626 | } | |
70287db8 MG |
627 | if (!init) { |
628 | /* | |
629 | * BQC returned an invalid level. | |
630 | * Stop using it. | |
631 | */ | |
632 | ACPI_WARNING((AE_INFO, | |
633 | "%s returned an invalid level", | |
634 | buf)); | |
635 | device->cap._BQC = device->cap._BCQ = 0; | |
636 | } | |
c8890f90 ZR |
637 | } else { |
638 | /* Fixme: | |
639 | * should we return an error or ignore this failure? | |
640 | * dev->brightness->curr is a cached value which stores | |
641 | * the correct current backlight level in most cases. | |
642 | * ACPI video backlight still works w/ buggy _BQC. | |
643 | * http://bugzilla.kernel.org/show_bug.cgi?id=12233 | |
644 | */ | |
c60d638e ZR |
645 | ACPI_WARNING((AE_INFO, "Evaluating %s failed", buf)); |
646 | device->cap._BQC = device->cap._BCQ = 0; | |
c8890f90 ZR |
647 | } |
648 | } | |
649 | ||
4500ca8e | 650 | *level = device->brightness->curr; |
c8890f90 | 651 | return 0; |
1da177e4 LT |
652 | } |
653 | ||
654 | static int | |
4be44fcd LB |
655 | acpi_video_device_EDID(struct acpi_video_device *device, |
656 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 657 | { |
4be44fcd LB |
658 | int status; |
659 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
660 | union acpi_object *obj; | |
661 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
662 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 663 | |
1da177e4 LT |
664 | |
665 | *edid = NULL; | |
666 | ||
667 | if (!device) | |
d550d98d | 668 | return -ENODEV; |
1da177e4 LT |
669 | if (length == 128) |
670 | arg0.integer.value = 1; | |
671 | else if (length == 256) | |
672 | arg0.integer.value = 2; | |
673 | else | |
d550d98d | 674 | return -EINVAL; |
1da177e4 | 675 | |
90130268 | 676 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 677 | if (ACPI_FAILURE(status)) |
d550d98d | 678 | return -ENODEV; |
1da177e4 | 679 | |
50dd0969 | 680 | obj = buffer.pointer; |
1da177e4 LT |
681 | |
682 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
683 | *edid = obj; | |
684 | else { | |
6468463a | 685 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
686 | status = -EFAULT; |
687 | kfree(obj); | |
688 | } | |
689 | ||
d550d98d | 690 | return status; |
1da177e4 LT |
691 | } |
692 | ||
1da177e4 LT |
693 | /* bus */ |
694 | ||
1da177e4 LT |
695 | /* |
696 | * Arg: | |
697 | * video : video bus device pointer | |
698 | * bios_flag : | |
699 | * 0. The system BIOS should NOT automatically switch(toggle) | |
700 | * the active display output. | |
701 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 702 | * active display output. No switch event. |
1da177e4 LT |
703 | * 2. The _DGS value should be locked. |
704 | * 3. The system BIOS should not automatically switch (toggle) the | |
705 | * active display output, but instead generate the display switch | |
706 | * event notify code. | |
707 | * lcd_flag : | |
708 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 709 | * of the LCD when the power changes from AC to DC |
1da177e4 | 710 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 711 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
712 | * Return Value: |
713 | * -1 wrong arg. | |
714 | */ | |
715 | ||
716 | static int | |
4be44fcd | 717 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 718 | { |
439913ff | 719 | u64 status = 0; |
4be44fcd LB |
720 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
721 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 722 | |
1da177e4 | 723 | |
4be44fcd | 724 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
725 | status = -1; |
726 | goto Failed; | |
727 | } | |
728 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
729 | video->dos_setting = arg0.integer.value; | |
90130268 | 730 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 731 | |
4be44fcd | 732 | Failed: |
d550d98d | 733 | return status; |
1da177e4 LT |
734 | } |
735 | ||
935e5f29 ZR |
736 | /* |
737 | * Simple comparison function used to sort backlight levels. | |
738 | */ | |
739 | ||
740 | static int | |
741 | acpi_video_cmp_level(const void *a, const void *b) | |
742 | { | |
743 | return *(int *)a - *(int *)b; | |
744 | } | |
745 | ||
1da177e4 LT |
746 | /* |
747 | * Arg: | |
748 | * device : video output device (LCD, CRT, ..) | |
749 | * | |
750 | * Return Value: | |
469778c1 JJ |
751 | * Maximum brightness level |
752 | * | |
753 | * Allocate and initialize device->brightness. | |
754 | */ | |
755 | ||
756 | static int | |
757 | acpi_video_init_brightness(struct acpi_video_device *device) | |
758 | { | |
759 | union acpi_object *obj = NULL; | |
d32f6947 | 760 | int i, max_level = 0, count = 0, level_ac_battery = 0; |
1a7c618a | 761 | unsigned long long level, level_old; |
469778c1 JJ |
762 | union acpi_object *o; |
763 | struct acpi_video_device_brightness *br = NULL; | |
1a7c618a | 764 | int result = -EINVAL; |
469778c1 JJ |
765 | |
766 | if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { | |
767 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available " | |
768 | "LCD brightness level\n")); | |
769 | goto out; | |
770 | } | |
771 | ||
772 | if (obj->package.count < 2) | |
773 | goto out; | |
774 | ||
775 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
776 | if (!br) { | |
777 | printk(KERN_ERR "can't allocate memory\n"); | |
1a7c618a | 778 | result = -ENOMEM; |
469778c1 JJ |
779 | goto out; |
780 | } | |
781 | ||
d32f6947 | 782 | br->levels = kmalloc((obj->package.count + 2) * sizeof *(br->levels), |
469778c1 | 783 | GFP_KERNEL); |
1a7c618a ZR |
784 | if (!br->levels) { |
785 | result = -ENOMEM; | |
469778c1 | 786 | goto out_free; |
1a7c618a | 787 | } |
469778c1 JJ |
788 | |
789 | for (i = 0; i < obj->package.count; i++) { | |
790 | o = (union acpi_object *)&obj->package.elements[i]; | |
791 | if (o->type != ACPI_TYPE_INTEGER) { | |
792 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
793 | continue; | |
794 | } | |
795 | br->levels[count] = (u32) o->integer.value; | |
796 | ||
797 | if (br->levels[count] > max_level) | |
798 | max_level = br->levels[count]; | |
799 | count++; | |
800 | } | |
801 | ||
d32f6947 ZR |
802 | /* |
803 | * some buggy BIOS don't export the levels | |
804 | * when machine is on AC/Battery in _BCL package. | |
805 | * In this case, the first two elements in _BCL packages | |
806 | * are also supported brightness levels that OS should take care of. | |
807 | */ | |
90af2cf6 ZR |
808 | for (i = 2; i < count; i++) { |
809 | if (br->levels[i] == br->levels[0]) | |
d32f6947 | 810 | level_ac_battery++; |
90af2cf6 ZR |
811 | if (br->levels[i] == br->levels[1]) |
812 | level_ac_battery++; | |
813 | } | |
d32f6947 ZR |
814 | |
815 | if (level_ac_battery < 2) { | |
816 | level_ac_battery = 2 - level_ac_battery; | |
817 | br->flags._BCL_no_ac_battery_levels = 1; | |
818 | for (i = (count - 1 + level_ac_battery); i >= 2; i--) | |
819 | br->levels[i] = br->levels[i - level_ac_battery]; | |
820 | count += level_ac_battery; | |
821 | } else if (level_ac_battery > 2) | |
822 | ACPI_ERROR((AE_INFO, "Too many duplicates in _BCL package\n")); | |
823 | ||
d80fb99f ZR |
824 | /* Check if the _BCL package is in a reversed order */ |
825 | if (max_level == br->levels[2]) { | |
826 | br->flags._BCL_reversed = 1; | |
827 | sort(&br->levels[2], count - 2, sizeof(br->levels[2]), | |
828 | acpi_video_cmp_level, NULL); | |
829 | } else if (max_level != br->levels[count - 1]) | |
830 | ACPI_ERROR((AE_INFO, | |
831 | "Found unordered _BCL package\n")); | |
469778c1 JJ |
832 | |
833 | br->count = count; | |
834 | device->brightness = br; | |
1a7c618a ZR |
835 | |
836 | /* Check the input/output of _BQC/_BCL/_BCM */ | |
837 | if ((max_level < 100) && (max_level <= (count - 2))) | |
838 | br->flags._BCL_use_index = 1; | |
839 | ||
840 | /* | |
841 | * _BCM is always consistent with _BCL, | |
842 | * at least for all the laptops we have ever seen. | |
843 | */ | |
844 | br->flags._BCM_use_index = br->flags._BCL_use_index; | |
845 | ||
846 | /* _BQC uses INDEX while _BCL uses VALUE in some laptops */ | |
90c53ca4 | 847 | br->curr = level = max_level; |
e047cca6 ZR |
848 | |
849 | if (!device->cap._BQC) | |
850 | goto set_level; | |
851 | ||
70287db8 | 852 | result = acpi_video_device_lcd_get_level_current(device, &level_old, 1); |
1a7c618a ZR |
853 | if (result) |
854 | goto out_free_levels; | |
855 | ||
e047cca6 ZR |
856 | /* |
857 | * Set the level to maximum and check if _BQC uses indexed value | |
858 | */ | |
859 | result = acpi_video_device_lcd_set_level(device, max_level); | |
1a7c618a ZR |
860 | if (result) |
861 | goto out_free_levels; | |
862 | ||
70287db8 | 863 | result = acpi_video_device_lcd_get_level_current(device, &level, 0); |
1a7c618a ZR |
864 | if (result) |
865 | goto out_free_levels; | |
866 | ||
e047cca6 ZR |
867 | br->flags._BQC_use_index = (level == max_level ? 0 : 1); |
868 | ||
90c53ca4 ZR |
869 | if (!br->flags._BQC_use_index) { |
870 | /* | |
871 | * Set the backlight to the initial state. | |
872 | * On some buggy laptops, _BQC returns an uninitialized value | |
873 | * when invoked for the first time, i.e. level_old is invalid. | |
874 | * set the backlight to max_level in this case | |
875 | */ | |
876 | for (i = 2; i < br->count; i++) | |
877 | if (level_old == br->levels[i]) | |
878 | level = level_old; | |
e047cca6 | 879 | goto set_level; |
90c53ca4 | 880 | } |
e047cca6 ZR |
881 | |
882 | if (br->flags._BCL_reversed) | |
883 | level_old = (br->count - 1) - level_old; | |
90c53ca4 | 884 | level = br->levels[level_old]; |
e047cca6 ZR |
885 | |
886 | set_level: | |
90c53ca4 | 887 | result = acpi_video_device_lcd_set_level(device, level); |
e047cca6 ZR |
888 | if (result) |
889 | goto out_free_levels; | |
1a7c618a | 890 | |
d32f6947 ZR |
891 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
892 | "found %d brightness levels\n", count - 2)); | |
469778c1 | 893 | kfree(obj); |
1a7c618a | 894 | return result; |
469778c1 JJ |
895 | |
896 | out_free_levels: | |
897 | kfree(br->levels); | |
898 | out_free: | |
899 | kfree(br); | |
900 | out: | |
901 | device->brightness = NULL; | |
902 | kfree(obj); | |
1a7c618a | 903 | return result; |
469778c1 JJ |
904 | } |
905 | ||
906 | /* | |
907 | * Arg: | |
908 | * device : video output device (LCD, CRT, ..) | |
909 | * | |
910 | * Return Value: | |
1da177e4 LT |
911 | * None |
912 | * | |
98fb8fe1 | 913 | * Find out all required AML methods defined under the output |
1da177e4 LT |
914 | * device. |
915 | */ | |
916 | ||
4be44fcd | 917 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 918 | { |
1da177e4 | 919 | acpi_handle h_dummy1; |
1da177e4 | 920 | |
90130268 | 921 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
922 | device->cap._ADR = 1; |
923 | } | |
90130268 | 924 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 925 | device->cap._BCL = 1; |
1da177e4 | 926 | } |
90130268 | 927 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 928 | device->cap._BCM = 1; |
1da177e4 | 929 | } |
2f3d000a YL |
930 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
931 | device->cap._BQC = 1; | |
c60d638e ZR |
932 | else if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCQ", |
933 | &h_dummy1))) { | |
934 | printk(KERN_WARNING FW_BUG "_BCQ is used instead of _BQC\n"); | |
935 | device->cap._BCQ = 1; | |
936 | } | |
937 | ||
90130268 | 938 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 939 | device->cap._DDC = 1; |
1da177e4 | 940 | } |
90130268 | 941 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
942 | device->cap._DCS = 1; |
943 | } | |
90130268 | 944 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
945 | device->cap._DGS = 1; |
946 | } | |
90130268 | 947 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
948 | device->cap._DSS = 1; |
949 | } | |
950 | ||
1a7c618a | 951 | if (acpi_video_backlight_support()) { |
a19a6ee6 | 952 | struct backlight_properties props; |
702ed512 | 953 | int result; |
2f3d000a YL |
954 | static int count = 0; |
955 | char *name; | |
1a7c618a ZR |
956 | |
957 | result = acpi_video_init_brightness(device); | |
958 | if (result) | |
959 | return; | |
aeb834d9 | 960 | name = kasprintf(GFP_KERNEL, "acpi_video%d", count); |
2f3d000a YL |
961 | if (!name) |
962 | return; | |
aeb834d9 | 963 | count++; |
2f3d000a | 964 | |
a19a6ee6 MG |
965 | memset(&props, 0, sizeof(struct backlight_properties)); |
966 | props.max_brightness = device->brightness->count - 3; | |
967 | device->backlight = backlight_device_register(name, NULL, device, | |
968 | &acpi_backlight_ops, | |
969 | &props); | |
2f3d000a | 970 | kfree(name); |
e01ce79b ZR |
971 | if (IS_ERR(device->backlight)) |
972 | return; | |
702ed512 | 973 | |
ac7729da RW |
974 | /* |
975 | * Save current brightness level in case we have to restore it | |
976 | * before acpi_video_device_lcd_set_level() is called next time. | |
977 | */ | |
978 | device->backlight->props.brightness = | |
979 | acpi_video_get_brightness(device->backlight); | |
702ed512 | 980 | |
056c308d ZR |
981 | result = sysfs_create_link(&device->backlight->dev.kobj, |
982 | &device->dev->dev.kobj, "device"); | |
983 | if (result) | |
984 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
985 | ||
4a703a8f | 986 | device->cooling_dev = thermal_cooling_device_register("LCD", |
702ed512 | 987 | device->dev, &video_cooling_ops); |
4a703a8f | 988 | if (IS_ERR(device->cooling_dev)) { |
4b4fe3b6 | 989 | /* |
4a703a8f | 990 | * Set cooling_dev to NULL so we don't crash trying to |
4b4fe3b6 DT |
991 | * free it. |
992 | * Also, why the hell we are returning early and | |
993 | * not attempt to register video output if cooling | |
994 | * device registration failed? | |
995 | * -- dtor | |
996 | */ | |
4a703a8f | 997 | device->cooling_dev = NULL; |
43ff39f2 | 998 | return; |
4b4fe3b6 | 999 | } |
43ff39f2 | 1000 | |
fc3a8828 | 1001 | dev_info(&device->dev->dev, "registered as cooling_device%d\n", |
4a703a8f | 1002 | device->cooling_dev->id); |
9030062f | 1003 | result = sysfs_create_link(&device->dev->dev.kobj, |
4a703a8f | 1004 | &device->cooling_dev->device.kobj, |
9030062f JL |
1005 | "thermal_cooling"); |
1006 | if (result) | |
1007 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
4a703a8f | 1008 | result = sysfs_create_link(&device->cooling_dev->device.kobj, |
9030062f JL |
1009 | &device->dev->dev.kobj, "device"); |
1010 | if (result) | |
1011 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
1012 | ||
2f3d000a | 1013 | } |
c3d6de69 TR |
1014 | |
1015 | if (acpi_video_display_switch_support()) { | |
1016 | ||
1017 | if (device->cap._DCS && device->cap._DSS) { | |
1018 | static int count; | |
1019 | char *name; | |
aeb834d9 | 1020 | name = kasprintf(GFP_KERNEL, "acpi_video%d", count); |
c3d6de69 TR |
1021 | if (!name) |
1022 | return; | |
aeb834d9 | 1023 | count++; |
c3d6de69 TR |
1024 | device->output_dev = video_output_register(name, |
1025 | NULL, device, &acpi_output_properties); | |
1026 | kfree(name); | |
1027 | } | |
23b0f015 | 1028 | } |
1da177e4 LT |
1029 | } |
1030 | ||
1031 | /* | |
1032 | * Arg: | |
1033 | * device : video output device (VGA) | |
1034 | * | |
1035 | * Return Value: | |
1036 | * None | |
1037 | * | |
98fb8fe1 | 1038 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
1039 | */ |
1040 | ||
4be44fcd | 1041 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 1042 | { |
4be44fcd | 1043 | acpi_handle h_dummy1; |
1da177e4 | 1044 | |
90130268 | 1045 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
1046 | video->cap._DOS = 1; |
1047 | } | |
90130268 | 1048 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
1049 | video->cap._DOD = 1; |
1050 | } | |
90130268 | 1051 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
1052 | video->cap._ROM = 1; |
1053 | } | |
90130268 | 1054 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
1055 | video->cap._GPD = 1; |
1056 | } | |
90130268 | 1057 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
1058 | video->cap._SPD = 1; |
1059 | } | |
90130268 | 1060 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
1061 | video->cap._VPO = 1; |
1062 | } | |
1063 | } | |
1064 | ||
1065 | /* | |
1066 | * Check whether the video bus device has required AML method to | |
1067 | * support the desired features | |
1068 | */ | |
1069 | ||
4be44fcd | 1070 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 1071 | { |
4be44fcd | 1072 | acpi_status status = -ENOENT; |
1e4cffe7 | 1073 | struct pci_dev *dev; |
1da177e4 LT |
1074 | |
1075 | if (!video) | |
d550d98d | 1076 | return -EINVAL; |
1da177e4 | 1077 | |
1e4cffe7 | 1078 | dev = acpi_get_pci_dev(video->device->handle); |
22c13f9d TR |
1079 | if (!dev) |
1080 | return -ENODEV; | |
1e4cffe7 | 1081 | pci_dev_put(dev); |
22c13f9d | 1082 | |
1da177e4 LT |
1083 | /* Since there is no HID, CID and so on for VGA driver, we have |
1084 | * to check well known required nodes. | |
1085 | */ | |
1086 | ||
98fb8fe1 | 1087 | /* Does this device support video switching? */ |
3a1151e3 SB |
1088 | if (video->cap._DOS || video->cap._DOD) { |
1089 | if (!video->cap._DOS) { | |
1090 | printk(KERN_WARNING FW_BUG | |
1091 | "ACPI(%s) defines _DOD but not _DOS\n", | |
1092 | acpi_device_bid(video->device)); | |
1093 | } | |
1da177e4 LT |
1094 | video->flags.multihead = 1; |
1095 | status = 0; | |
1096 | } | |
1097 | ||
98fb8fe1 | 1098 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 1099 | if (video->cap._ROM) { |
1da177e4 LT |
1100 | video->flags.rom = 1; |
1101 | status = 0; | |
1102 | } | |
1103 | ||
98fb8fe1 | 1104 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 1105 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
1106 | video->flags.post = 1; |
1107 | status = 0; | |
1108 | } | |
1109 | ||
d550d98d | 1110 | return status; |
1da177e4 LT |
1111 | } |
1112 | ||
1113 | /* -------------------------------------------------------------------------- | |
1114 | FS Interface (/proc) | |
1115 | -------------------------------------------------------------------------- */ | |
6e37c658 | 1116 | #ifdef CONFIG_ACPI_PROCFS |
1da177e4 | 1117 | |
4be44fcd | 1118 | static struct proc_dir_entry *acpi_video_dir; |
1da177e4 LT |
1119 | |
1120 | /* video devices */ | |
1121 | ||
4be44fcd | 1122 | static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1123 | { |
50dd0969 | 1124 | struct acpi_video_device *dev = seq->private; |
1da177e4 | 1125 | |
1da177e4 LT |
1126 | |
1127 | if (!dev) | |
1128 | goto end; | |
1129 | ||
1130 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); | |
1131 | seq_printf(seq, "type: "); | |
1132 | if (dev->flags.crt) | |
1133 | seq_printf(seq, "CRT\n"); | |
1134 | else if (dev->flags.lcd) | |
1135 | seq_printf(seq, "LCD\n"); | |
1136 | else if (dev->flags.tvout) | |
1137 | seq_printf(seq, "TVOUT\n"); | |
82cae999 RZ |
1138 | else if (dev->flags.dvi) |
1139 | seq_printf(seq, "DVI\n"); | |
1da177e4 LT |
1140 | else |
1141 | seq_printf(seq, "UNKNOWN\n"); | |
1142 | ||
4be44fcd | 1143 | seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no"); |
1da177e4 | 1144 | |
4be44fcd | 1145 | end: |
d550d98d | 1146 | return 0; |
1da177e4 LT |
1147 | } |
1148 | ||
1149 | static int | |
4be44fcd | 1150 | acpi_video_device_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1151 | { |
1152 | return single_open(file, acpi_video_device_info_seq_show, | |
1153 | PDE(inode)->data); | |
1154 | } | |
1155 | ||
6e37c658 ZR |
1156 | static int |
1157 | acpi_video_device_query(struct acpi_video_device *device, | |
1158 | unsigned long long *state) | |
1159 | { | |
1160 | int status; | |
1161 | ||
1162 | status = acpi_evaluate_integer(device->dev->handle, "_DGS", | |
1163 | NULL, state); | |
1164 | ||
1165 | return status; | |
1166 | } | |
1167 | ||
4be44fcd | 1168 | static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1169 | { |
4be44fcd | 1170 | int status; |
50dd0969 | 1171 | struct acpi_video_device *dev = seq->private; |
27663c58 | 1172 | unsigned long long state; |
1da177e4 | 1173 | |
1da177e4 LT |
1174 | |
1175 | if (!dev) | |
1176 | goto end; | |
1177 | ||
1178 | status = acpi_video_device_get_state(dev, &state); | |
1179 | seq_printf(seq, "state: "); | |
1180 | if (ACPI_SUCCESS(status)) | |
27663c58 | 1181 | seq_printf(seq, "0x%02llx\n", state); |
1da177e4 LT |
1182 | else |
1183 | seq_printf(seq, "<not supported>\n"); | |
1184 | ||
1185 | status = acpi_video_device_query(dev, &state); | |
1186 | seq_printf(seq, "query: "); | |
1187 | if (ACPI_SUCCESS(status)) | |
27663c58 | 1188 | seq_printf(seq, "0x%02llx\n", state); |
1da177e4 LT |
1189 | else |
1190 | seq_printf(seq, "<not supported>\n"); | |
1191 | ||
4be44fcd | 1192 | end: |
d550d98d | 1193 | return 0; |
1da177e4 LT |
1194 | } |
1195 | ||
1196 | static int | |
4be44fcd | 1197 | acpi_video_device_state_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1198 | { |
1199 | return single_open(file, acpi_video_device_state_seq_show, | |
1200 | PDE(inode)->data); | |
1201 | } | |
1202 | ||
1203 | static ssize_t | |
4be44fcd LB |
1204 | acpi_video_device_write_state(struct file *file, |
1205 | const char __user * buffer, | |
1206 | size_t count, loff_t * data) | |
1da177e4 | 1207 | { |
4be44fcd | 1208 | int status; |
50dd0969 JE |
1209 | struct seq_file *m = file->private_data; |
1210 | struct acpi_video_device *dev = m->private; | |
4be44fcd LB |
1211 | char str[12] = { 0 }; |
1212 | u32 state = 0; | |
1da177e4 | 1213 | |
1da177e4 | 1214 | |
52a2b11c | 1215 | if (!dev || count >= sizeof(str)) |
d550d98d | 1216 | return -EINVAL; |
1da177e4 LT |
1217 | |
1218 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1219 | return -EFAULT; |
1da177e4 LT |
1220 | |
1221 | str[count] = 0; | |
1222 | state = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1223 | state &= ((1ul << 31) | (1ul << 30) | (1ul << 0)); |
1da177e4 LT |
1224 | |
1225 | status = acpi_video_device_set_state(dev, state); | |
1226 | ||
1227 | if (status) | |
d550d98d | 1228 | return -EFAULT; |
1da177e4 | 1229 | |
d550d98d | 1230 | return count; |
1da177e4 LT |
1231 | } |
1232 | ||
1233 | static int | |
4be44fcd | 1234 | acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1235 | { |
50dd0969 | 1236 | struct acpi_video_device *dev = seq->private; |
4be44fcd | 1237 | int i; |
1da177e4 | 1238 | |
1da177e4 LT |
1239 | |
1240 | if (!dev || !dev->brightness) { | |
1241 | seq_printf(seq, "<not supported>\n"); | |
d550d98d | 1242 | return 0; |
1da177e4 LT |
1243 | } |
1244 | ||
1245 | seq_printf(seq, "levels: "); | |
0a3db1ce | 1246 | for (i = 2; i < dev->brightness->count; i++) |
1da177e4 LT |
1247 | seq_printf(seq, " %d", dev->brightness->levels[i]); |
1248 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); | |
1249 | ||
d550d98d | 1250 | return 0; |
1da177e4 LT |
1251 | } |
1252 | ||
1253 | static int | |
4be44fcd | 1254 | acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1255 | { |
1256 | return single_open(file, acpi_video_device_brightness_seq_show, | |
1257 | PDE(inode)->data); | |
1258 | } | |
1259 | ||
1260 | static ssize_t | |
4be44fcd LB |
1261 | acpi_video_device_write_brightness(struct file *file, |
1262 | const char __user * buffer, | |
1263 | size_t count, loff_t * data) | |
1da177e4 | 1264 | { |
50dd0969 JE |
1265 | struct seq_file *m = file->private_data; |
1266 | struct acpi_video_device *dev = m->private; | |
c88c5786 | 1267 | char str[5] = { 0 }; |
4be44fcd LB |
1268 | unsigned int level = 0; |
1269 | int i; | |
1da177e4 | 1270 | |
1da177e4 | 1271 | |
52a2b11c | 1272 | if (!dev || !dev->brightness || count >= sizeof(str)) |
d550d98d | 1273 | return -EINVAL; |
1da177e4 LT |
1274 | |
1275 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1276 | return -EFAULT; |
1da177e4 LT |
1277 | |
1278 | str[count] = 0; | |
1279 | level = simple_strtoul(str, NULL, 0); | |
4be44fcd | 1280 | |
1da177e4 | 1281 | if (level > 100) |
d550d98d | 1282 | return -EFAULT; |
1da177e4 | 1283 | |
98fb8fe1 | 1284 | /* validate through the list of available levels */ |
0a3db1ce | 1285 | for (i = 2; i < dev->brightness->count; i++) |
1da177e4 | 1286 | if (level == dev->brightness->levels[i]) { |
24450c7a ZR |
1287 | if (!acpi_video_device_lcd_set_level(dev, level)) |
1288 | return count; | |
1da177e4 LT |
1289 | break; |
1290 | } | |
1291 | ||
24450c7a | 1292 | return -EINVAL; |
1da177e4 LT |
1293 | } |
1294 | ||
4be44fcd | 1295 | static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1296 | { |
50dd0969 | 1297 | struct acpi_video_device *dev = seq->private; |
4be44fcd LB |
1298 | int status; |
1299 | int i; | |
1300 | union acpi_object *edid = NULL; | |
1da177e4 | 1301 | |
1da177e4 LT |
1302 | |
1303 | if (!dev) | |
1304 | goto out; | |
1305 | ||
4be44fcd | 1306 | status = acpi_video_device_EDID(dev, &edid, 128); |
1da177e4 | 1307 | if (ACPI_FAILURE(status)) { |
4be44fcd | 1308 | status = acpi_video_device_EDID(dev, &edid, 256); |
1da177e4 LT |
1309 | } |
1310 | ||
1311 | if (ACPI_FAILURE(status)) { | |
1312 | goto out; | |
1313 | } | |
1314 | ||
1315 | if (edid && edid->type == ACPI_TYPE_BUFFER) { | |
1316 | for (i = 0; i < edid->buffer.length; i++) | |
1317 | seq_putc(seq, edid->buffer.pointer[i]); | |
1318 | } | |
1319 | ||
4be44fcd | 1320 | out: |
1da177e4 LT |
1321 | if (!edid) |
1322 | seq_printf(seq, "<not supported>\n"); | |
1323 | else | |
1324 | kfree(edid); | |
1325 | ||
d550d98d | 1326 | return 0; |
1da177e4 LT |
1327 | } |
1328 | ||
1329 | static int | |
4be44fcd | 1330 | acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1331 | { |
1332 | return single_open(file, acpi_video_device_EDID_seq_show, | |
1333 | PDE(inode)->data); | |
1334 | } | |
1335 | ||
4be44fcd | 1336 | static int acpi_video_device_add_fs(struct acpi_device *device) |
1da177e4 | 1337 | { |
251cb0bc | 1338 | struct proc_dir_entry *entry, *device_dir; |
1da177e4 LT |
1339 | struct acpi_video_device *vid_dev; |
1340 | ||
50dd0969 | 1341 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1342 | if (!vid_dev) |
d550d98d | 1343 | return -ENODEV; |
1da177e4 | 1344 | |
251cb0bc DT |
1345 | device_dir = proc_mkdir(acpi_device_bid(device), |
1346 | vid_dev->video->dir); | |
1347 | if (!device_dir) | |
1348 | return -ENOMEM; | |
1349 | ||
1da177e4 | 1350 | /* 'info' [R] */ |
e0066c4e | 1351 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab | 1352 | &acpi_video_device_info_fops, acpi_driver_data(device)); |
1da177e4 | 1353 | if (!entry) |
251cb0bc | 1354 | goto err_remove_dir; |
1da177e4 LT |
1355 | |
1356 | /* 'state' [R/W] */ | |
cf7acfab | 1357 | entry = proc_create_data("state", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1358 | device_dir, |
cf7acfab DL |
1359 | &acpi_video_device_state_fops, |
1360 | acpi_driver_data(device)); | |
1da177e4 | 1361 | if (!entry) |
251cb0bc | 1362 | goto err_remove_info; |
1da177e4 LT |
1363 | |
1364 | /* 'brightness' [R/W] */ | |
cf7acfab | 1365 | entry = proc_create_data("brightness", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1366 | device_dir, |
cf7acfab DL |
1367 | &acpi_video_device_brightness_fops, |
1368 | acpi_driver_data(device)); | |
1da177e4 | 1369 | if (!entry) |
251cb0bc | 1370 | goto err_remove_state; |
1da177e4 LT |
1371 | |
1372 | /* 'EDID' [R] */ | |
e0066c4e | 1373 | entry = proc_create_data("EDID", S_IRUGO, device_dir, |
cf7acfab DL |
1374 | &acpi_video_device_EDID_fops, |
1375 | acpi_driver_data(device)); | |
1da177e4 | 1376 | if (!entry) |
251cb0bc | 1377 | goto err_remove_brightness; |
1da177e4 | 1378 | |
e0066c4e AD |
1379 | acpi_device_dir(device) = device_dir; |
1380 | ||
d550d98d | 1381 | return 0; |
251cb0bc DT |
1382 | |
1383 | err_remove_brightness: | |
1384 | remove_proc_entry("brightness", device_dir); | |
1385 | err_remove_state: | |
1386 | remove_proc_entry("state", device_dir); | |
1387 | err_remove_info: | |
1388 | remove_proc_entry("info", device_dir); | |
1389 | err_remove_dir: | |
1390 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); | |
1391 | return -ENOMEM; | |
1da177e4 LT |
1392 | } |
1393 | ||
4be44fcd | 1394 | static int acpi_video_device_remove_fs(struct acpi_device *device) |
1da177e4 LT |
1395 | { |
1396 | struct acpi_video_device *vid_dev; | |
251cb0bc | 1397 | struct proc_dir_entry *device_dir; |
1da177e4 | 1398 | |
50dd0969 | 1399 | vid_dev = acpi_driver_data(device); |
1da177e4 | 1400 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
d550d98d | 1401 | return -ENODEV; |
1da177e4 | 1402 | |
251cb0bc DT |
1403 | device_dir = acpi_device_dir(device); |
1404 | if (device_dir) { | |
1405 | remove_proc_entry("info", device_dir); | |
1406 | remove_proc_entry("state", device_dir); | |
1407 | remove_proc_entry("brightness", device_dir); | |
1408 | remove_proc_entry("EDID", device_dir); | |
4be44fcd | 1409 | remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir); |
1da177e4 LT |
1410 | acpi_device_dir(device) = NULL; |
1411 | } | |
1412 | ||
d550d98d | 1413 | return 0; |
1da177e4 LT |
1414 | } |
1415 | ||
1da177e4 | 1416 | /* video bus */ |
4be44fcd | 1417 | static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1418 | { |
50dd0969 | 1419 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1420 | |
1da177e4 LT |
1421 | |
1422 | if (!video) | |
1423 | goto end; | |
1424 | ||
1425 | seq_printf(seq, "Switching heads: %s\n", | |
4be44fcd | 1426 | video->flags.multihead ? "yes" : "no"); |
1da177e4 | 1427 | seq_printf(seq, "Video ROM: %s\n", |
4be44fcd | 1428 | video->flags.rom ? "yes" : "no"); |
1da177e4 | 1429 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
4be44fcd | 1430 | video->flags.post ? "yes" : "no"); |
1da177e4 | 1431 | |
4be44fcd | 1432 | end: |
d550d98d | 1433 | return 0; |
1da177e4 LT |
1434 | } |
1435 | ||
4be44fcd | 1436 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1437 | { |
4be44fcd LB |
1438 | return single_open(file, acpi_video_bus_info_seq_show, |
1439 | PDE(inode)->data); | |
1da177e4 LT |
1440 | } |
1441 | ||
4be44fcd | 1442 | static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1443 | { |
50dd0969 | 1444 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1445 | |
1da177e4 LT |
1446 | |
1447 | if (!video) | |
1448 | goto end; | |
1449 | ||
96b2dd1f | 1450 | printk(KERN_INFO PREFIX "Please implement %s\n", __func__); |
1da177e4 LT |
1451 | seq_printf(seq, "<TODO>\n"); |
1452 | ||
4be44fcd | 1453 | end: |
d550d98d | 1454 | return 0; |
1da177e4 LT |
1455 | } |
1456 | ||
4be44fcd | 1457 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1458 | { |
1459 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); | |
1460 | } | |
1461 | ||
6e37c658 ZR |
1462 | static int |
1463 | acpi_video_bus_POST_options(struct acpi_video_bus *video, | |
1464 | unsigned long long *options) | |
1465 | { | |
1466 | int status; | |
1467 | ||
1468 | status = acpi_evaluate_integer(video->device->handle, "_VPO", | |
1469 | NULL, options); | |
1470 | *options &= 3; | |
1471 | ||
1472 | return status; | |
1473 | } | |
1474 | ||
4be44fcd | 1475 | static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1476 | { |
50dd0969 | 1477 | struct acpi_video_bus *video = seq->private; |
27663c58 | 1478 | unsigned long long options; |
4be44fcd | 1479 | int status; |
1da177e4 | 1480 | |
1da177e4 LT |
1481 | |
1482 | if (!video) | |
1483 | goto end; | |
1484 | ||
1485 | status = acpi_video_bus_POST_options(video, &options); | |
1486 | if (ACPI_SUCCESS(status)) { | |
1487 | if (!(options & 1)) { | |
4be44fcd LB |
1488 | printk(KERN_WARNING PREFIX |
1489 | "The motherboard VGA device is not listed as a possible POST device.\n"); | |
1490 | printk(KERN_WARNING PREFIX | |
98fb8fe1 | 1491 | "This indicates a BIOS bug. Please contact the manufacturer.\n"); |
1da177e4 | 1492 | } |
4d939155 | 1493 | printk(KERN_WARNING "%llx\n", options); |
98fb8fe1 | 1494 | seq_printf(seq, "can POST: <integrated video>"); |
1da177e4 LT |
1495 | if (options & 2) |
1496 | seq_printf(seq, " <PCI video>"); | |
1497 | if (options & 4) | |
1498 | seq_printf(seq, " <AGP video>"); | |
1499 | seq_putc(seq, '\n'); | |
1500 | } else | |
1501 | seq_printf(seq, "<not supported>\n"); | |
4be44fcd | 1502 | end: |
d550d98d | 1503 | return 0; |
1da177e4 LT |
1504 | } |
1505 | ||
1506 | static int | |
4be44fcd | 1507 | acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1508 | { |
4be44fcd LB |
1509 | return single_open(file, acpi_video_bus_POST_info_seq_show, |
1510 | PDE(inode)->data); | |
1da177e4 LT |
1511 | } |
1512 | ||
6e37c658 ZR |
1513 | static int |
1514 | acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long long *id) | |
1515 | { | |
1516 | int status; | |
1517 | ||
1518 | status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id); | |
1519 | ||
1520 | return status; | |
1521 | } | |
1522 | ||
4be44fcd | 1523 | static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1524 | { |
50dd0969 | 1525 | struct acpi_video_bus *video = seq->private; |
4be44fcd | 1526 | int status; |
27663c58 | 1527 | unsigned long long id; |
1da177e4 | 1528 | |
1da177e4 LT |
1529 | |
1530 | if (!video) | |
1531 | goto end; | |
1532 | ||
4be44fcd | 1533 | status = acpi_video_bus_get_POST(video, &id); |
1da177e4 LT |
1534 | if (!ACPI_SUCCESS(status)) { |
1535 | seq_printf(seq, "<not supported>\n"); | |
1536 | goto end; | |
1537 | } | |
98fb8fe1 | 1538 | seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]); |
1da177e4 | 1539 | |
4be44fcd | 1540 | end: |
d550d98d | 1541 | return 0; |
1da177e4 LT |
1542 | } |
1543 | ||
4be44fcd | 1544 | static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset) |
1da177e4 | 1545 | { |
50dd0969 | 1546 | struct acpi_video_bus *video = seq->private; |
1da177e4 | 1547 | |
1da177e4 | 1548 | |
4be44fcd | 1549 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting); |
1da177e4 | 1550 | |
d550d98d | 1551 | return 0; |
1da177e4 LT |
1552 | } |
1553 | ||
4be44fcd | 1554 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file) |
1da177e4 | 1555 | { |
4be44fcd LB |
1556 | return single_open(file, acpi_video_bus_POST_seq_show, |
1557 | PDE(inode)->data); | |
1da177e4 LT |
1558 | } |
1559 | ||
4be44fcd | 1560 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file) |
1da177e4 LT |
1561 | { |
1562 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); | |
1563 | } | |
1564 | ||
6e37c658 ZR |
1565 | static int |
1566 | acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option) | |
1567 | { | |
1568 | int status; | |
1569 | unsigned long long tmp; | |
1570 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
1571 | struct acpi_object_list args = { 1, &arg0 }; | |
1572 | ||
1573 | ||
1574 | arg0.integer.value = option; | |
1575 | ||
1576 | status = acpi_evaluate_integer(video->device->handle, "_SPD", | |
1577 | &args, &tmp); | |
1578 | if (ACPI_SUCCESS(status)) | |
1579 | status = tmp ? (-EINVAL) : (AE_OK); | |
1580 | ||
1581 | return status; | |
1582 | } | |
1583 | ||
1da177e4 | 1584 | static ssize_t |
4be44fcd LB |
1585 | acpi_video_bus_write_POST(struct file *file, |
1586 | const char __user * buffer, | |
1587 | size_t count, loff_t * data) | |
1da177e4 | 1588 | { |
4be44fcd | 1589 | int status; |
50dd0969 JE |
1590 | struct seq_file *m = file->private_data; |
1591 | struct acpi_video_bus *video = m->private; | |
4be44fcd | 1592 | char str[12] = { 0 }; |
27663c58 | 1593 | unsigned long long opt, options; |
1da177e4 | 1594 | |
1da177e4 | 1595 | |
52a2b11c | 1596 | if (!video || count >= sizeof(str)) |
d550d98d | 1597 | return -EINVAL; |
1da177e4 LT |
1598 | |
1599 | status = acpi_video_bus_POST_options(video, &options); | |
1600 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1601 | return -EINVAL; |
1da177e4 LT |
1602 | |
1603 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1604 | return -EFAULT; |
1da177e4 LT |
1605 | |
1606 | str[count] = 0; | |
1607 | opt = strtoul(str, NULL, 0); | |
1608 | if (opt > 3) | |
d550d98d | 1609 | return -EFAULT; |
1da177e4 | 1610 | |
98fb8fe1 | 1611 | /* just in case an OEM 'forgot' the motherboard... */ |
1da177e4 LT |
1612 | options |= 1; |
1613 | ||
1614 | if (options & (1ul << opt)) { | |
4be44fcd | 1615 | status = acpi_video_bus_set_POST(video, opt); |
1da177e4 | 1616 | if (!ACPI_SUCCESS(status)) |
d550d98d | 1617 | return -EFAULT; |
1da177e4 LT |
1618 | |
1619 | } | |
1620 | ||
d550d98d | 1621 | return count; |
1da177e4 LT |
1622 | } |
1623 | ||
1624 | static ssize_t | |
4be44fcd LB |
1625 | acpi_video_bus_write_DOS(struct file *file, |
1626 | const char __user * buffer, | |
1627 | size_t count, loff_t * data) | |
1da177e4 | 1628 | { |
4be44fcd | 1629 | int status; |
50dd0969 JE |
1630 | struct seq_file *m = file->private_data; |
1631 | struct acpi_video_bus *video = m->private; | |
4be44fcd LB |
1632 | char str[12] = { 0 }; |
1633 | unsigned long opt; | |
1da177e4 | 1634 | |
1da177e4 | 1635 | |
52a2b11c | 1636 | if (!video || count >= sizeof(str)) |
d550d98d | 1637 | return -EINVAL; |
1da177e4 LT |
1638 | |
1639 | if (copy_from_user(str, buffer, count)) | |
d550d98d | 1640 | return -EFAULT; |
1da177e4 LT |
1641 | |
1642 | str[count] = 0; | |
1643 | opt = strtoul(str, NULL, 0); | |
1644 | if (opt > 7) | |
d550d98d | 1645 | return -EFAULT; |
1da177e4 | 1646 | |
4be44fcd | 1647 | status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2); |
1da177e4 LT |
1648 | |
1649 | if (!ACPI_SUCCESS(status)) | |
d550d98d | 1650 | return -EFAULT; |
1da177e4 | 1651 | |
d550d98d | 1652 | return count; |
1da177e4 LT |
1653 | } |
1654 | ||
4be44fcd | 1655 | static int acpi_video_bus_add_fs(struct acpi_device *device) |
1da177e4 | 1656 | { |
251cb0bc DT |
1657 | struct acpi_video_bus *video = acpi_driver_data(device); |
1658 | struct proc_dir_entry *device_dir; | |
1659 | struct proc_dir_entry *entry; | |
1da177e4 | 1660 | |
251cb0bc DT |
1661 | device_dir = proc_mkdir(acpi_device_bid(device), acpi_video_dir); |
1662 | if (!device_dir) | |
1663 | return -ENOMEM; | |
1da177e4 | 1664 | |
1da177e4 | 1665 | /* 'info' [R] */ |
e0066c4e | 1666 | entry = proc_create_data("info", S_IRUGO, device_dir, |
cf7acfab DL |
1667 | &acpi_video_bus_info_fops, |
1668 | acpi_driver_data(device)); | |
1da177e4 | 1669 | if (!entry) |
251cb0bc | 1670 | goto err_remove_dir; |
1da177e4 LT |
1671 | |
1672 | /* 'ROM' [R] */ | |
e0066c4e | 1673 | entry = proc_create_data("ROM", S_IRUGO, device_dir, |
cf7acfab DL |
1674 | &acpi_video_bus_ROM_fops, |
1675 | acpi_driver_data(device)); | |
1da177e4 | 1676 | if (!entry) |
251cb0bc | 1677 | goto err_remove_info; |
1da177e4 LT |
1678 | |
1679 | /* 'POST_info' [R] */ | |
e0066c4e | 1680 | entry = proc_create_data("POST_info", S_IRUGO, device_dir, |
cf7acfab DL |
1681 | &acpi_video_bus_POST_info_fops, |
1682 | acpi_driver_data(device)); | |
1da177e4 | 1683 | if (!entry) |
251cb0bc | 1684 | goto err_remove_rom; |
1da177e4 LT |
1685 | |
1686 | /* 'POST' [R/W] */ | |
08acd4f8 | 1687 | entry = proc_create_data("POST", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1688 | device_dir, |
cf7acfab DL |
1689 | &acpi_video_bus_POST_fops, |
1690 | acpi_driver_data(device)); | |
1da177e4 | 1691 | if (!entry) |
251cb0bc | 1692 | goto err_remove_post_info; |
1da177e4 LT |
1693 | |
1694 | /* 'DOS' [R/W] */ | |
08acd4f8 | 1695 | entry = proc_create_data("DOS", S_IFREG | S_IRUGO | S_IWUSR, |
e0066c4e | 1696 | device_dir, |
cf7acfab DL |
1697 | &acpi_video_bus_DOS_fops, |
1698 | acpi_driver_data(device)); | |
1da177e4 | 1699 | if (!entry) |
251cb0bc | 1700 | goto err_remove_post; |
1da177e4 | 1701 | |
251cb0bc | 1702 | video->dir = acpi_device_dir(device) = device_dir; |
d550d98d | 1703 | return 0; |
251cb0bc DT |
1704 | |
1705 | err_remove_post: | |
1706 | remove_proc_entry("POST", device_dir); | |
1707 | err_remove_post_info: | |
1708 | remove_proc_entry("POST_info", device_dir); | |
1709 | err_remove_rom: | |
1710 | remove_proc_entry("ROM", device_dir); | |
1711 | err_remove_info: | |
1712 | remove_proc_entry("info", device_dir); | |
1713 | err_remove_dir: | |
1714 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); | |
1715 | return -ENOMEM; | |
1da177e4 LT |
1716 | } |
1717 | ||
4be44fcd | 1718 | static int acpi_video_bus_remove_fs(struct acpi_device *device) |
1da177e4 | 1719 | { |
251cb0bc DT |
1720 | struct proc_dir_entry *device_dir = acpi_device_dir(device); |
1721 | ||
1722 | if (device_dir) { | |
1723 | remove_proc_entry("info", device_dir); | |
1724 | remove_proc_entry("ROM", device_dir); | |
1725 | remove_proc_entry("POST_info", device_dir); | |
1726 | remove_proc_entry("POST", device_dir); | |
1727 | remove_proc_entry("DOS", device_dir); | |
4be44fcd | 1728 | remove_proc_entry(acpi_device_bid(device), acpi_video_dir); |
1da177e4 LT |
1729 | acpi_device_dir(device) = NULL; |
1730 | } | |
1731 | ||
d550d98d | 1732 | return 0; |
1da177e4 | 1733 | } |
6e37c658 ZR |
1734 | #else |
1735 | static inline int acpi_video_device_add_fs(struct acpi_device *device) | |
1736 | { | |
1737 | return 0; | |
1738 | } | |
1739 | static inline int acpi_video_device_remove_fs(struct acpi_device *device) | |
1740 | { | |
1741 | return 0; | |
1742 | } | |
1743 | static inline int acpi_video_bus_add_fs(struct acpi_device *device) | |
1744 | { | |
1745 | return 0; | |
1746 | } | |
1747 | static inline int acpi_video_bus_remove_fs(struct acpi_device *device) | |
1748 | { | |
1749 | return 0; | |
1750 | } | |
1751 | #endif /* CONFIG_ACPI_PROCFS */ | |
1da177e4 LT |
1752 | |
1753 | /* -------------------------------------------------------------------------- | |
1754 | Driver Interface | |
1755 | -------------------------------------------------------------------------- */ | |
1756 | ||
1757 | /* device interface */ | |
82cae999 RZ |
1758 | static struct acpi_video_device_attrib* |
1759 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1760 | { | |
78eed028 DT |
1761 | struct acpi_video_enumerated_device *ids; |
1762 | int i; | |
1763 | ||
1764 | for (i = 0; i < video->attached_count; i++) { | |
1765 | ids = &video->attached_array[i]; | |
1766 | if ((ids->value.int_val & 0xffff) == device_id) | |
1767 | return &ids->value.attrib; | |
1768 | } | |
82cae999 | 1769 | |
82cae999 RZ |
1770 | return NULL; |
1771 | } | |
1da177e4 | 1772 | |
e92a7162 MG |
1773 | static int |
1774 | acpi_video_get_device_type(struct acpi_video_bus *video, | |
1775 | unsigned long device_id) | |
1776 | { | |
1777 | struct acpi_video_enumerated_device *ids; | |
1778 | int i; | |
1779 | ||
1780 | for (i = 0; i < video->attached_count; i++) { | |
1781 | ids = &video->attached_array[i]; | |
1782 | if ((ids->value.int_val & 0xffff) == device_id) | |
1783 | return ids->value.int_val; | |
1784 | } | |
1785 | ||
1786 | return 0; | |
1787 | } | |
1788 | ||
1da177e4 | 1789 | static int |
4be44fcd LB |
1790 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1791 | struct acpi_video_bus *video) | |
1da177e4 | 1792 | { |
27663c58 | 1793 | unsigned long long device_id; |
e92a7162 | 1794 | int status, device_type; |
4be44fcd | 1795 | struct acpi_video_device *data; |
82cae999 | 1796 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1797 | |
1798 | if (!device || !video) | |
d550d98d | 1799 | return -EINVAL; |
1da177e4 | 1800 | |
4be44fcd LB |
1801 | status = |
1802 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1803 | if (ACPI_SUCCESS(status)) { |
1804 | ||
36bcbec7 | 1805 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1806 | if (!data) |
d550d98d | 1807 | return -ENOMEM; |
1da177e4 | 1808 | |
1da177e4 LT |
1809 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1810 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 1811 | device->driver_data = data; |
1da177e4 LT |
1812 | |
1813 | data->device_id = device_id; | |
1814 | data->video = video; | |
1815 | data->dev = device; | |
1816 | ||
82cae999 RZ |
1817 | attribute = acpi_video_get_device_attr(video, device_id); |
1818 | ||
1819 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1820 | switch (attribute->display_type) { | |
1821 | case ACPI_VIDEO_DISPLAY_CRT: | |
1822 | data->flags.crt = 1; | |
1823 | break; | |
1824 | case ACPI_VIDEO_DISPLAY_TV: | |
1825 | data->flags.tvout = 1; | |
1826 | break; | |
1827 | case ACPI_VIDEO_DISPLAY_DVI: | |
1828 | data->flags.dvi = 1; | |
1829 | break; | |
1830 | case ACPI_VIDEO_DISPLAY_LCD: | |
1831 | data->flags.lcd = 1; | |
1832 | break; | |
1833 | default: | |
1834 | data->flags.unknown = 1; | |
1835 | break; | |
1836 | } | |
1837 | if(attribute->bios_can_detect) | |
1838 | data->flags.bios = 1; | |
e92a7162 MG |
1839 | } else { |
1840 | /* Check for legacy IDs */ | |
1841 | device_type = acpi_video_get_device_type(video, | |
1842 | device_id); | |
1843 | /* Ignore bits 16 and 18-20 */ | |
1844 | switch (device_type & 0xffe2ffff) { | |
1845 | case ACPI_VIDEO_DISPLAY_LEGACY_MONITOR: | |
1846 | data->flags.crt = 1; | |
1847 | break; | |
1848 | case ACPI_VIDEO_DISPLAY_LEGACY_PANEL: | |
1849 | data->flags.lcd = 1; | |
1850 | break; | |
1851 | case ACPI_VIDEO_DISPLAY_LEGACY_TV: | |
1852 | data->flags.tvout = 1; | |
1853 | break; | |
1854 | default: | |
1855 | data->flags.unknown = 1; | |
1856 | } | |
1857 | } | |
4be44fcd | 1858 | |
1da177e4 LT |
1859 | acpi_video_device_bind(video, data); |
1860 | acpi_video_device_find_cap(data); | |
1861 | ||
90130268 | 1862 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1863 | ACPI_DEVICE_NOTIFY, |
1864 | acpi_video_device_notify, | |
1865 | data); | |
1da177e4 | 1866 | if (ACPI_FAILURE(status)) { |
55ac9a01 LM |
1867 | printk(KERN_ERR PREFIX |
1868 | "Error installing notify handler\n"); | |
973bf491 YL |
1869 | if(data->brightness) |
1870 | kfree(data->brightness->levels); | |
1871 | kfree(data->brightness); | |
1872 | kfree(data); | |
1873 | return -ENODEV; | |
1da177e4 LT |
1874 | } |
1875 | ||
bbac81f5 | 1876 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1877 | list_add_tail(&data->entry, &video->video_device_list); |
bbac81f5 | 1878 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1879 | |
1880 | acpi_video_device_add_fs(device); | |
1881 | ||
d550d98d | 1882 | return 0; |
1da177e4 LT |
1883 | } |
1884 | ||
d550d98d | 1885 | return -ENOENT; |
1da177e4 LT |
1886 | } |
1887 | ||
1888 | /* | |
1889 | * Arg: | |
1890 | * video : video bus device | |
1891 | * | |
1892 | * Return: | |
1893 | * none | |
1894 | * | |
1895 | * Enumerate the video device list of the video bus, | |
1896 | * bind the ids with the corresponding video devices | |
1897 | * under the video bus. | |
4be44fcd | 1898 | */ |
1da177e4 | 1899 | |
4be44fcd | 1900 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1901 | { |
ff102ea9 DT |
1902 | struct acpi_video_device *dev; |
1903 | ||
bbac81f5 | 1904 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1905 | |
1906 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1907 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1908 | |
bbac81f5 | 1909 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1910 | } |
1911 | ||
1912 | /* | |
1913 | * Arg: | |
1914 | * video : video bus device | |
1915 | * device : video output device under the video | |
1916 | * bus | |
1917 | * | |
1918 | * Return: | |
1919 | * none | |
1920 | * | |
1921 | * Bind the ids with the corresponding video devices | |
1922 | * under the video bus. | |
4be44fcd | 1923 | */ |
1da177e4 LT |
1924 | |
1925 | static void | |
4be44fcd LB |
1926 | acpi_video_device_bind(struct acpi_video_bus *video, |
1927 | struct acpi_video_device *device) | |
1da177e4 | 1928 | { |
78eed028 | 1929 | struct acpi_video_enumerated_device *ids; |
4be44fcd | 1930 | int i; |
1da177e4 | 1931 | |
78eed028 DT |
1932 | for (i = 0; i < video->attached_count; i++) { |
1933 | ids = &video->attached_array[i]; | |
1934 | if (device->device_id == (ids->value.int_val & 0xffff)) { | |
1935 | ids->bind_info = device; | |
1da177e4 LT |
1936 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); |
1937 | } | |
1938 | } | |
1da177e4 LT |
1939 | } |
1940 | ||
1941 | /* | |
1942 | * Arg: | |
1943 | * video : video bus device | |
1944 | * | |
1945 | * Return: | |
1946 | * < 0 : error | |
1947 | * | |
1948 | * Call _DOD to enumerate all devices attached to display adapter | |
1949 | * | |
4be44fcd | 1950 | */ |
1da177e4 LT |
1951 | |
1952 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1953 | { | |
4be44fcd LB |
1954 | int status; |
1955 | int count; | |
1956 | int i; | |
78eed028 | 1957 | struct acpi_video_enumerated_device *active_list; |
4be44fcd LB |
1958 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1959 | union acpi_object *dod = NULL; | |
1960 | union acpi_object *obj; | |
1da177e4 | 1961 | |
90130268 | 1962 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1963 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1964 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1965 | return status; |
1da177e4 LT |
1966 | } |
1967 | ||
50dd0969 | 1968 | dod = buffer.pointer; |
1da177e4 | 1969 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1970 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1971 | status = -EFAULT; |
1972 | goto out; | |
1973 | } | |
1974 | ||
1975 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1976 | dod->package.count)); |
1da177e4 | 1977 | |
78eed028 DT |
1978 | active_list = kcalloc(1 + dod->package.count, |
1979 | sizeof(struct acpi_video_enumerated_device), | |
1980 | GFP_KERNEL); | |
1981 | if (!active_list) { | |
1da177e4 LT |
1982 | status = -ENOMEM; |
1983 | goto out; | |
1984 | } | |
1985 | ||
1986 | count = 0; | |
1987 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1988 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1989 | |
1990 | if (obj->type != ACPI_TYPE_INTEGER) { | |
78eed028 DT |
1991 | printk(KERN_ERR PREFIX |
1992 | "Invalid _DOD data in element %d\n", i); | |
1993 | continue; | |
1da177e4 | 1994 | } |
78eed028 DT |
1995 | |
1996 | active_list[count].value.int_val = obj->integer.value; | |
1997 | active_list[count].bind_info = NULL; | |
4be44fcd LB |
1998 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1999 | (int)obj->integer.value)); | |
1da177e4 LT |
2000 | count++; |
2001 | } | |
1da177e4 | 2002 | |
6044ec88 | 2003 | kfree(video->attached_array); |
4be44fcd | 2004 | |
78eed028 | 2005 | video->attached_array = active_list; |
1da177e4 | 2006 | video->attached_count = count; |
78eed028 DT |
2007 | |
2008 | out: | |
02438d87 | 2009 | kfree(buffer.pointer); |
d550d98d | 2010 | return status; |
1da177e4 LT |
2011 | } |
2012 | ||
4be44fcd LB |
2013 | static int |
2014 | acpi_video_get_next_level(struct acpi_video_device *device, | |
2015 | u32 level_current, u32 event) | |
1da177e4 | 2016 | { |
63f0edfc | 2017 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
2018 | max = max_below = 0; |
2019 | min = min_above = 255; | |
63f0edfc | 2020 | /* Find closest level to level_current */ |
0a3db1ce | 2021 | for (i = 2; i < device->brightness->count; i++) { |
63f0edfc AS |
2022 | l = device->brightness->levels[i]; |
2023 | if (abs(l - level_current) < abs(delta)) { | |
2024 | delta = l - level_current; | |
2025 | if (!delta) | |
2026 | break; | |
2027 | } | |
2028 | } | |
2029 | /* Ajust level_current to closest available level */ | |
2030 | level_current += delta; | |
0a3db1ce | 2031 | for (i = 2; i < device->brightness->count; i++) { |
f4715189 TT |
2032 | l = device->brightness->levels[i]; |
2033 | if (l < min) | |
2034 | min = l; | |
2035 | if (l > max) | |
2036 | max = l; | |
2037 | if (l < min_above && l > level_current) | |
2038 | min_above = l; | |
2039 | if (l > max_below && l < level_current) | |
2040 | max_below = l; | |
2041 | } | |
2042 | ||
2043 | switch (event) { | |
2044 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
2045 | return (level_current < max) ? min_above : min; | |
2046 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
2047 | return (level_current < max) ? min_above : max; | |
2048 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
2049 | return (level_current > min) ? max_below : min; | |
2050 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
2051 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
2052 | return 0; | |
2053 | default: | |
2054 | return level_current; | |
2055 | } | |
1da177e4 LT |
2056 | } |
2057 | ||
c8890f90 | 2058 | static int |
4be44fcd | 2059 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 | 2060 | { |
27663c58 | 2061 | unsigned long long level_current, level_next; |
c8890f90 ZR |
2062 | int result = -EINVAL; |
2063 | ||
28c32e99 ZR |
2064 | /* no warning message if acpi_backlight=vendor is used */ |
2065 | if (!acpi_video_backlight_support()) | |
2066 | return 0; | |
2067 | ||
469778c1 | 2068 | if (!device->brightness) |
c8890f90 ZR |
2069 | goto out; |
2070 | ||
2071 | result = acpi_video_device_lcd_get_level_current(device, | |
70287db8 | 2072 | &level_current, 0); |
c8890f90 ZR |
2073 | if (result) |
2074 | goto out; | |
2075 | ||
1da177e4 | 2076 | level_next = acpi_video_get_next_level(device, level_current, event); |
c8890f90 | 2077 | |
24450c7a | 2078 | result = acpi_video_device_lcd_set_level(device, level_next); |
c8890f90 | 2079 | |
36342742 MG |
2080 | if (!result) |
2081 | backlight_force_update(device->backlight, | |
2082 | BACKLIGHT_UPDATE_HOTKEY); | |
2083 | ||
c8890f90 ZR |
2084 | out: |
2085 | if (result) | |
2086 | printk(KERN_ERR PREFIX "Failed to switch the brightness\n"); | |
2087 | ||
2088 | return result; | |
1da177e4 LT |
2089 | } |
2090 | ||
e92a7162 MG |
2091 | int acpi_video_get_edid(struct acpi_device *device, int type, int device_id, |
2092 | void **edid) | |
2093 | { | |
2094 | struct acpi_video_bus *video; | |
2095 | struct acpi_video_device *video_device; | |
2096 | union acpi_object *buffer = NULL; | |
2097 | acpi_status status; | |
2098 | int i, length; | |
2099 | ||
2100 | if (!device || !acpi_driver_data(device)) | |
2101 | return -EINVAL; | |
2102 | ||
2103 | video = acpi_driver_data(device); | |
2104 | ||
2105 | for (i = 0; i < video->attached_count; i++) { | |
2106 | video_device = video->attached_array[i].bind_info; | |
2107 | length = 256; | |
2108 | ||
2109 | if (!video_device) | |
2110 | continue; | |
2111 | ||
2112 | if (type) { | |
2113 | switch (type) { | |
2114 | case ACPI_VIDEO_DISPLAY_CRT: | |
2115 | if (!video_device->flags.crt) | |
2116 | continue; | |
2117 | break; | |
2118 | case ACPI_VIDEO_DISPLAY_TV: | |
2119 | if (!video_device->flags.tvout) | |
2120 | continue; | |
2121 | break; | |
2122 | case ACPI_VIDEO_DISPLAY_DVI: | |
2123 | if (!video_device->flags.dvi) | |
2124 | continue; | |
2125 | break; | |
2126 | case ACPI_VIDEO_DISPLAY_LCD: | |
2127 | if (!video_device->flags.lcd) | |
2128 | continue; | |
2129 | break; | |
2130 | } | |
2131 | } else if (video_device->device_id != device_id) { | |
2132 | continue; | |
2133 | } | |
2134 | ||
2135 | status = acpi_video_device_EDID(video_device, &buffer, length); | |
2136 | ||
2137 | if (ACPI_FAILURE(status) || !buffer || | |
2138 | buffer->type != ACPI_TYPE_BUFFER) { | |
2139 | length = 128; | |
2140 | status = acpi_video_device_EDID(video_device, &buffer, | |
2141 | length); | |
2142 | if (ACPI_FAILURE(status) || !buffer || | |
2143 | buffer->type != ACPI_TYPE_BUFFER) { | |
2144 | continue; | |
2145 | } | |
2146 | } | |
2147 | ||
2148 | *edid = buffer->buffer.pointer; | |
2149 | return length; | |
2150 | } | |
2151 | ||
2152 | return -ENODEV; | |
2153 | } | |
2154 | EXPORT_SYMBOL(acpi_video_get_edid); | |
2155 | ||
1da177e4 | 2156 | static int |
4be44fcd LB |
2157 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
2158 | struct acpi_device *device) | |
1da177e4 | 2159 | { |
4be44fcd | 2160 | int status = 0; |
ff102ea9 | 2161 | struct acpi_device *dev; |
1da177e4 LT |
2162 | |
2163 | acpi_video_device_enumerate(video); | |
2164 | ||
ff102ea9 | 2165 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
2166 | |
2167 | status = acpi_video_bus_get_one_device(dev, video); | |
2168 | if (ACPI_FAILURE(status)) { | |
55ac9a01 | 2169 | printk(KERN_WARNING PREFIX |
cfa806f0 | 2170 | "Cant attach device\n"); |
1da177e4 LT |
2171 | continue; |
2172 | } | |
1da177e4 | 2173 | } |
d550d98d | 2174 | return status; |
1da177e4 LT |
2175 | } |
2176 | ||
4be44fcd | 2177 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 2178 | { |
031ec77b | 2179 | acpi_status status; |
1da177e4 LT |
2180 | |
2181 | if (!device || !device->video) | |
d550d98d | 2182 | return -ENOENT; |
1da177e4 | 2183 | |
1da177e4 LT |
2184 | acpi_video_device_remove_fs(device->dev); |
2185 | ||
90130268 | 2186 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
2187 | ACPI_DEVICE_NOTIFY, |
2188 | acpi_video_device_notify); | |
cfa806f0 AK |
2189 | if (ACPI_FAILURE(status)) { |
2190 | printk(KERN_WARNING PREFIX | |
2191 | "Cant remove video notify handler\n"); | |
2192 | } | |
e29b3ee3 KP |
2193 | if (device->backlight) { |
2194 | sysfs_remove_link(&device->backlight->dev.kobj, "device"); | |
2195 | backlight_device_unregister(device->backlight); | |
2196 | device->backlight = NULL; | |
2197 | } | |
4a703a8f | 2198 | if (device->cooling_dev) { |
702ed512 ZR |
2199 | sysfs_remove_link(&device->dev->dev.kobj, |
2200 | "thermal_cooling"); | |
4a703a8f | 2201 | sysfs_remove_link(&device->cooling_dev->device.kobj, |
702ed512 | 2202 | "device"); |
4a703a8f DT |
2203 | thermal_cooling_device_unregister(device->cooling_dev); |
2204 | device->cooling_dev = NULL; | |
702ed512 | 2205 | } |
23b0f015 | 2206 | video_output_unregister(device->output_dev); |
ff102ea9 | 2207 | |
d550d98d | 2208 | return 0; |
1da177e4 LT |
2209 | } |
2210 | ||
4be44fcd | 2211 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 2212 | { |
4be44fcd | 2213 | int status; |
ff102ea9 | 2214 | struct acpi_video_device *dev, *next; |
1da177e4 | 2215 | |
bbac81f5 | 2216 | mutex_lock(&video->device_list_lock); |
1da177e4 | 2217 | |
ff102ea9 | 2218 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 2219 | |
ff102ea9 | 2220 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
2221 | if (ACPI_FAILURE(status)) |
2222 | printk(KERN_WARNING PREFIX | |
2223 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 2224 | |
ff102ea9 DT |
2225 | if (dev->brightness) { |
2226 | kfree(dev->brightness->levels); | |
2227 | kfree(dev->brightness); | |
2228 | } | |
2229 | list_del(&dev->entry); | |
2230 | kfree(dev); | |
1da177e4 LT |
2231 | } |
2232 | ||
bbac81f5 | 2233 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 2234 | |
d550d98d | 2235 | return 0; |
1da177e4 LT |
2236 | } |
2237 | ||
2238 | /* acpi_video interface */ | |
2239 | ||
4be44fcd | 2240 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 2241 | { |
a21101c4 | 2242 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
2243 | } |
2244 | ||
4be44fcd | 2245 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
2246 | { |
2247 | return acpi_video_bus_DOS(video, 0, 1); | |
2248 | } | |
2249 | ||
7015558f | 2250 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event) |
1da177e4 | 2251 | { |
7015558f | 2252 | struct acpi_video_bus *video = acpi_driver_data(device); |
e9dab196 | 2253 | struct input_dev *input; |
17c452f9 | 2254 | int keycode = 0; |
e9dab196 | 2255 | |
1da177e4 | 2256 | if (!video) |
d550d98d | 2257 | return; |
1da177e4 | 2258 | |
e9dab196 | 2259 | input = video->input; |
1da177e4 LT |
2260 | |
2261 | switch (event) { | |
98fb8fe1 | 2262 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 2263 | * most likely via hotkey. */ |
14e04fb3 | 2264 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2265 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
2266 | break; |
2267 | ||
98fb8fe1 | 2268 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
2269 | * connector. */ |
2270 | acpi_video_device_enumerate(video); | |
2271 | acpi_video_device_rebind(video); | |
14e04fb3 | 2272 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2273 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
2274 | break; |
2275 | ||
4be44fcd | 2276 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
25c87f7f | 2277 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2278 | keycode = KEY_SWITCHVIDEOMODE; |
2279 | break; | |
4be44fcd | 2280 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
25c87f7f | 2281 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2282 | keycode = KEY_VIDEO_NEXT; |
2283 | break; | |
4be44fcd | 2284 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
14e04fb3 | 2285 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2286 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
2287 | break; |
2288 | ||
2289 | default: | |
2290 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 2291 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
2292 | break; |
2293 | } | |
2294 | ||
7761f638 | 2295 | acpi_notifier_call_chain(device, event, 0); |
17c452f9 MG |
2296 | |
2297 | if (keycode) { | |
2298 | input_report_key(input, keycode, 1); | |
2299 | input_sync(input); | |
2300 | input_report_key(input, keycode, 0); | |
2301 | input_sync(input); | |
2302 | } | |
e9dab196 | 2303 | |
d550d98d | 2304 | return; |
1da177e4 LT |
2305 | } |
2306 | ||
4be44fcd | 2307 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 2308 | { |
50dd0969 | 2309 | struct acpi_video_device *video_device = data; |
4be44fcd | 2310 | struct acpi_device *device = NULL; |
e9dab196 LY |
2311 | struct acpi_video_bus *bus; |
2312 | struct input_dev *input; | |
17c452f9 | 2313 | int keycode = 0; |
1da177e4 | 2314 | |
1da177e4 | 2315 | if (!video_device) |
d550d98d | 2316 | return; |
1da177e4 | 2317 | |
e6afa0de | 2318 | device = video_device->dev; |
e9dab196 LY |
2319 | bus = video_device->video; |
2320 | input = bus->input; | |
1da177e4 LT |
2321 | |
2322 | switch (event) { | |
4be44fcd | 2323 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
8a681a4d ZR |
2324 | if (brightness_switch_enabled) |
2325 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 2326 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2327 | keycode = KEY_BRIGHTNESS_CYCLE; |
2328 | break; | |
4be44fcd | 2329 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
8a681a4d ZR |
2330 | if (brightness_switch_enabled) |
2331 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2332 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2333 | keycode = KEY_BRIGHTNESSUP; |
2334 | break; | |
4be44fcd | 2335 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
8a681a4d ZR |
2336 | if (brightness_switch_enabled) |
2337 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2338 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2339 | keycode = KEY_BRIGHTNESSDOWN; |
2340 | break; | |
4be44fcd | 2341 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
8a681a4d ZR |
2342 | if (brightness_switch_enabled) |
2343 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 2344 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
2345 | keycode = KEY_BRIGHTNESS_ZERO; |
2346 | break; | |
4be44fcd | 2347 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
8a681a4d ZR |
2348 | if (brightness_switch_enabled) |
2349 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 2350 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 2351 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
2352 | break; |
2353 | default: | |
2354 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 2355 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
2356 | break; |
2357 | } | |
e9dab196 | 2358 | |
7761f638 | 2359 | acpi_notifier_call_chain(device, event, 0); |
17c452f9 MG |
2360 | |
2361 | if (keycode) { | |
2362 | input_report_key(input, keycode, 1); | |
2363 | input_sync(input); | |
2364 | input_report_key(input, keycode, 0); | |
2365 | input_sync(input); | |
2366 | } | |
e9dab196 | 2367 | |
d550d98d | 2368 | return; |
1da177e4 LT |
2369 | } |
2370 | ||
ac7729da RW |
2371 | static int acpi_video_resume(struct notifier_block *nb, |
2372 | unsigned long val, void *ign) | |
863c1490 MG |
2373 | { |
2374 | struct acpi_video_bus *video; | |
2375 | struct acpi_video_device *video_device; | |
2376 | int i; | |
2377 | ||
ac7729da RW |
2378 | switch (val) { |
2379 | case PM_HIBERNATION_PREPARE: | |
2380 | case PM_SUSPEND_PREPARE: | |
2381 | case PM_RESTORE_PREPARE: | |
2382 | return NOTIFY_DONE; | |
2383 | } | |
863c1490 | 2384 | |
ac7729da RW |
2385 | video = container_of(nb, struct acpi_video_bus, pm_nb); |
2386 | ||
2387 | dev_info(&video->device->dev, "Restoring backlight state\n"); | |
863c1490 MG |
2388 | |
2389 | for (i = 0; i < video->attached_count; i++) { | |
2390 | video_device = video->attached_array[i].bind_info; | |
2391 | if (video_device && video_device->backlight) | |
2392 | acpi_video_set_brightness(video_device->backlight); | |
2393 | } | |
ac7729da RW |
2394 | |
2395 | return NOTIFY_OK; | |
863c1490 MG |
2396 | } |
2397 | ||
c504f8cb ZR |
2398 | static acpi_status |
2399 | acpi_video_bus_match(acpi_handle handle, u32 level, void *context, | |
2400 | void **return_value) | |
2401 | { | |
2402 | struct acpi_device *device = context; | |
2403 | struct acpi_device *sibling; | |
2404 | int result; | |
2405 | ||
2406 | if (handle == device->handle) | |
2407 | return AE_CTRL_TERMINATE; | |
2408 | ||
2409 | result = acpi_bus_get_device(handle, &sibling); | |
2410 | if (result) | |
2411 | return AE_OK; | |
2412 | ||
2413 | if (!strcmp(acpi_device_name(sibling), ACPI_VIDEO_BUS_NAME)) | |
2414 | return AE_ALREADY_EXISTS; | |
2415 | ||
2416 | return AE_OK; | |
2417 | } | |
2418 | ||
ac7729da RW |
2419 | static int instance; |
2420 | ||
4be44fcd | 2421 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 2422 | { |
f51e8391 | 2423 | struct acpi_video_bus *video; |
e9dab196 | 2424 | struct input_dev *input; |
f51e8391 | 2425 | int error; |
c504f8cb ZR |
2426 | acpi_status status; |
2427 | ||
2428 | status = acpi_walk_namespace(ACPI_TYPE_DEVICE, | |
2429 | device->parent->handle, 1, | |
2430 | acpi_video_bus_match, NULL, | |
2431 | device, NULL); | |
2432 | if (status == AE_ALREADY_EXISTS) { | |
2433 | printk(KERN_WARNING FW_BUG | |
2434 | "Duplicate ACPI video bus devices for the" | |
2435 | " same VGA controller, please try module " | |
2436 | "parameter \"video.allow_duplicates=1\"" | |
2437 | "if the current driver doesn't work.\n"); | |
2438 | if (!allow_duplicates) | |
2439 | return -ENODEV; | |
2440 | } | |
1da177e4 | 2441 | |
36bcbec7 | 2442 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 2443 | if (!video) |
d550d98d | 2444 | return -ENOMEM; |
1da177e4 | 2445 | |
e6d9da1d ZR |
2446 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
2447 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
2448 | if (instance) | |
2449 | device->pnp.bus_id[3] = '0' + instance; | |
2450 | instance ++; | |
2451 | } | |
f3b39f13 ZY |
2452 | /* a hack to fix the duplicate name "VGA" problem on Pa 3553 */ |
2453 | if (!strcmp(device->pnp.bus_id, "VGA")) { | |
2454 | if (instance) | |
2455 | device->pnp.bus_id[3] = '0' + instance; | |
2456 | instance++; | |
2457 | } | |
e6d9da1d | 2458 | |
e6afa0de | 2459 | video->device = device; |
1da177e4 LT |
2460 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
2461 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 2462 | device->driver_data = video; |
1da177e4 LT |
2463 | |
2464 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
2465 | error = acpi_video_bus_check(video); |
2466 | if (error) | |
2467 | goto err_free_video; | |
1da177e4 | 2468 | |
f51e8391 DT |
2469 | error = acpi_video_bus_add_fs(device); |
2470 | if (error) | |
2471 | goto err_free_video; | |
1da177e4 | 2472 | |
bbac81f5 | 2473 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
2474 | INIT_LIST_HEAD(&video->video_device_list); |
2475 | ||
2476 | acpi_video_bus_get_devices(video, device); | |
2477 | acpi_video_bus_start_devices(video); | |
2478 | ||
e9dab196 | 2479 | video->input = input = input_allocate_device(); |
f51e8391 DT |
2480 | if (!input) { |
2481 | error = -ENOMEM; | |
7015558f | 2482 | goto err_stop_video; |
f51e8391 | 2483 | } |
e9dab196 LY |
2484 | |
2485 | snprintf(video->phys, sizeof(video->phys), | |
2486 | "%s/video/input0", acpi_device_hid(video->device)); | |
2487 | ||
2488 | input->name = acpi_device_name(video->device); | |
2489 | input->phys = video->phys; | |
2490 | input->id.bustype = BUS_HOST; | |
2491 | input->id.product = 0x06; | |
91c05c66 | 2492 | input->dev.parent = &device->dev; |
e9dab196 LY |
2493 | input->evbit[0] = BIT(EV_KEY); |
2494 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
2495 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
2496 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
2497 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
2498 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
2499 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
2500 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
2501 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
e9dab196 | 2502 | |
f51e8391 DT |
2503 | error = input_register_device(input); |
2504 | if (error) | |
2505 | goto err_free_input_dev; | |
e9dab196 | 2506 | |
1da177e4 | 2507 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
2508 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
2509 | video->flags.multihead ? "yes" : "no", | |
2510 | video->flags.rom ? "yes" : "no", | |
2511 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 2512 | |
ac7729da RW |
2513 | video->pm_nb.notifier_call = acpi_video_resume; |
2514 | video->pm_nb.priority = 0; | |
2515 | register_pm_notifier(&video->pm_nb); | |
2516 | ||
f51e8391 DT |
2517 | return 0; |
2518 | ||
2519 | err_free_input_dev: | |
2520 | input_free_device(input); | |
f51e8391 DT |
2521 | err_stop_video: |
2522 | acpi_video_bus_stop_devices(video); | |
2523 | acpi_video_bus_put_devices(video); | |
2524 | kfree(video->attached_array); | |
2525 | acpi_video_bus_remove_fs(device); | |
2526 | err_free_video: | |
2527 | kfree(video); | |
db89b4f0 | 2528 | device->driver_data = NULL; |
1da177e4 | 2529 | |
f51e8391 | 2530 | return error; |
1da177e4 LT |
2531 | } |
2532 | ||
4be44fcd | 2533 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 2534 | { |
4be44fcd | 2535 | struct acpi_video_bus *video = NULL; |
1da177e4 | 2536 | |
1da177e4 LT |
2537 | |
2538 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 2539 | return -EINVAL; |
1da177e4 | 2540 | |
50dd0969 | 2541 | video = acpi_driver_data(device); |
1da177e4 | 2542 | |
ac7729da RW |
2543 | unregister_pm_notifier(&video->pm_nb); |
2544 | ||
1da177e4 | 2545 | acpi_video_bus_stop_devices(video); |
1da177e4 LT |
2546 | acpi_video_bus_put_devices(video); |
2547 | acpi_video_bus_remove_fs(device); | |
2548 | ||
e9dab196 | 2549 | input_unregister_device(video->input); |
6044ec88 | 2550 | kfree(video->attached_array); |
1da177e4 LT |
2551 | kfree(video); |
2552 | ||
d550d98d | 2553 | return 0; |
1da177e4 LT |
2554 | } |
2555 | ||
74a365b3 MG |
2556 | static int __init intel_opregion_present(void) |
2557 | { | |
2558 | #if defined(CONFIG_DRM_I915) || defined(CONFIG_DRM_I915_MODULE) | |
2559 | struct pci_dev *dev = NULL; | |
2560 | u32 address; | |
2561 | ||
2562 | for_each_pci_dev(dev) { | |
2563 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
2564 | continue; | |
2565 | if (dev->vendor != PCI_VENDOR_ID_INTEL) | |
2566 | continue; | |
2567 | pci_read_config_dword(dev, 0xfc, &address); | |
2568 | if (!address) | |
2569 | continue; | |
2570 | return 1; | |
2571 | } | |
2572 | #endif | |
2573 | return 0; | |
2574 | } | |
2575 | ||
2576 | int acpi_video_register(void) | |
1da177e4 | 2577 | { |
4be44fcd | 2578 | int result = 0; |
86e437f0 ZY |
2579 | if (register_count) { |
2580 | /* | |
2581 | * if the function of acpi_video_register is already called, | |
2582 | * don't register the acpi_vide_bus again and return no error. | |
2583 | */ | |
2584 | return 0; | |
2585 | } | |
1da177e4 | 2586 | |
6e37c658 | 2587 | #ifdef CONFIG_ACPI_PROCFS |
1da177e4 LT |
2588 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); |
2589 | if (!acpi_video_dir) | |
d550d98d | 2590 | return -ENODEV; |
6e37c658 | 2591 | #endif |
1da177e4 LT |
2592 | |
2593 | result = acpi_bus_register_driver(&acpi_video_bus); | |
2594 | if (result < 0) { | |
2595 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); | |
d550d98d | 2596 | return -ENODEV; |
1da177e4 LT |
2597 | } |
2598 | ||
86e437f0 ZY |
2599 | /* |
2600 | * When the acpi_video_bus is loaded successfully, increase | |
2601 | * the counter reference. | |
2602 | */ | |
2603 | register_count = 1; | |
2604 | ||
d550d98d | 2605 | return 0; |
1da177e4 | 2606 | } |
74a365b3 MG |
2607 | EXPORT_SYMBOL(acpi_video_register); |
2608 | ||
86e437f0 ZY |
2609 | void acpi_video_unregister(void) |
2610 | { | |
2611 | if (!register_count) { | |
2612 | /* | |
2613 | * If the acpi video bus is already unloaded, don't | |
2614 | * unload it again and return directly. | |
2615 | */ | |
2616 | return; | |
2617 | } | |
2618 | acpi_bus_unregister_driver(&acpi_video_bus); | |
2619 | ||
6e37c658 | 2620 | #ifdef CONFIG_ACPI_PROCFS |
86e437f0 | 2621 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); |
6e37c658 | 2622 | #endif |
86e437f0 ZY |
2623 | |
2624 | register_count = 0; | |
2625 | ||
2626 | return; | |
2627 | } | |
2628 | EXPORT_SYMBOL(acpi_video_unregister); | |
2629 | ||
74a365b3 MG |
2630 | /* |
2631 | * This is kind of nasty. Hardware using Intel chipsets may require | |
2632 | * the video opregion code to be run first in order to initialise | |
2633 | * state before any ACPI video calls are made. To handle this we defer | |
2634 | * registration of the video class until the opregion code has run. | |
2635 | */ | |
2636 | ||
2637 | static int __init acpi_video_init(void) | |
2638 | { | |
45cb50e6 ZR |
2639 | dmi_check_system(video_dmi_table); |
2640 | ||
74a365b3 MG |
2641 | if (intel_opregion_present()) |
2642 | return 0; | |
2643 | ||
2644 | return acpi_video_register(); | |
2645 | } | |
1da177e4 | 2646 | |
86e437f0 | 2647 | static void __exit acpi_video_exit(void) |
1da177e4 | 2648 | { |
86e437f0 | 2649 | acpi_video_unregister(); |
1da177e4 | 2650 | |
d550d98d | 2651 | return; |
1da177e4 LT |
2652 | } |
2653 | ||
2654 | module_init(acpi_video_init); | |
2655 | module_exit(acpi_video_exit); |