Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * video.c - ACPI Video Driver ($Revision:$) | |
3 | * | |
4 | * Copyright (C) 2004 Luming Yu <luming.yu@intel.com> | |
5 | * Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org> | |
f4715189 | 6 | * Copyright (C) 2006 Thomas Tuttle <linux-kernel@ttuttle.net> |
1da177e4 LT |
7 | * |
8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or (at | |
13 | * your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
23 | * | |
24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
25 | */ | |
26 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/types.h> | |
31 | #include <linux/list.h> | |
bbac81f5 | 32 | #include <linux/mutex.h> |
e9dab196 | 33 | #include <linux/input.h> |
2f3d000a | 34 | #include <linux/backlight.h> |
702ed512 | 35 | #include <linux/thermal.h> |
23b0f015 | 36 | #include <linux/video_output.h> |
935e5f29 | 37 | #include <linux/sort.h> |
74a365b3 MG |
38 | #include <linux/pci.h> |
39 | #include <linux/pci_ids.h> | |
5a0e3ad6 | 40 | #include <linux/slab.h> |
1da177e4 | 41 | #include <asm/uaccess.h> |
eb27cae8 | 42 | #include <linux/dmi.h> |
1da177e4 LT |
43 | #include <acpi/acpi_bus.h> |
44 | #include <acpi/acpi_drivers.h> | |
ac7729da | 45 | #include <linux/suspend.h> |
e92a7162 | 46 | #include <acpi/video.h> |
1da177e4 | 47 | |
a192a958 LB |
48 | #define PREFIX "ACPI: " |
49 | ||
1da177e4 | 50 | #define ACPI_VIDEO_CLASS "video" |
1da177e4 LT |
51 | #define ACPI_VIDEO_BUS_NAME "Video Bus" |
52 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" | |
53 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 | |
54 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 | |
55 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 | |
56 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 | |
57 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 | |
58 | ||
f4715189 TT |
59 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85 |
60 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 | |
61 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 | |
62 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88 | |
63 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89 | |
1da177e4 | 64 | |
2f3d000a | 65 | #define MAX_NAME_LEN 20 |
1da177e4 | 66 | |
1da177e4 | 67 | #define _COMPONENT ACPI_VIDEO_COMPONENT |
f52fd66d | 68 | ACPI_MODULE_NAME("video"); |
1da177e4 | 69 | |
f52fd66d | 70 | MODULE_AUTHOR("Bruno Ducrot"); |
7cda93e0 | 71 | MODULE_DESCRIPTION("ACPI Video Driver"); |
1da177e4 LT |
72 | MODULE_LICENSE("GPL"); |
73 | ||
8a681a4d ZR |
74 | static int brightness_switch_enabled = 1; |
75 | module_param(brightness_switch_enabled, bool, 0644); | |
76 | ||
c504f8cb ZR |
77 | /* |
78 | * By default, we don't allow duplicate ACPI video bus devices | |
79 | * under the same VGA controller | |
80 | */ | |
81 | static int allow_duplicates; | |
82 | module_param(allow_duplicates, bool, 0644); | |
83 | ||
86e437f0 | 84 | static int register_count = 0; |
4be44fcd LB |
85 | static int acpi_video_bus_add(struct acpi_device *device); |
86 | static int acpi_video_bus_remove(struct acpi_device *device, int type); | |
7015558f | 87 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event); |
1da177e4 | 88 | |
1ba90e3a TR |
89 | static const struct acpi_device_id video_device_ids[] = { |
90 | {ACPI_VIDEO_HID, 0}, | |
91 | {"", 0}, | |
92 | }; | |
93 | MODULE_DEVICE_TABLE(acpi, video_device_ids); | |
94 | ||
1da177e4 | 95 | static struct acpi_driver acpi_video_bus = { |
c2b6705b | 96 | .name = "video", |
1da177e4 | 97 | .class = ACPI_VIDEO_CLASS, |
1ba90e3a | 98 | .ids = video_device_ids, |
1da177e4 LT |
99 | .ops = { |
100 | .add = acpi_video_bus_add, | |
101 | .remove = acpi_video_bus_remove, | |
7015558f | 102 | .notify = acpi_video_bus_notify, |
4be44fcd | 103 | }, |
1da177e4 LT |
104 | }; |
105 | ||
106 | struct acpi_video_bus_flags { | |
4be44fcd LB |
107 | u8 multihead:1; /* can switch video heads */ |
108 | u8 rom:1; /* can retrieve a video rom */ | |
109 | u8 post:1; /* can configure the head to */ | |
110 | u8 reserved:5; | |
1da177e4 LT |
111 | }; |
112 | ||
113 | struct acpi_video_bus_cap { | |
4be44fcd LB |
114 | u8 _DOS:1; /*Enable/Disable output switching */ |
115 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
116 | u8 _ROM:1; /*Get ROM Data */ | |
117 | u8 _GPD:1; /*Get POST Device */ | |
118 | u8 _SPD:1; /*Set POST Device */ | |
119 | u8 _VPO:1; /*Video POST Options */ | |
120 | u8 reserved:2; | |
1da177e4 LT |
121 | }; |
122 | ||
4be44fcd LB |
123 | struct acpi_video_device_attrib { |
124 | u32 display_index:4; /* A zero-based instance of the Display */ | |
98fb8fe1 | 125 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
4be44fcd | 126 | u32 display_type:4; /*Describe the specific type in use */ |
98fb8fe1 | 127 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
4be44fcd LB |
128 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
129 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
130 | the VGA device. */ | |
131 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
132 | u32 reserved:10; /*Must be 0 */ | |
133 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
134 | }; |
135 | ||
136 | struct acpi_video_enumerated_device { | |
137 | union { | |
138 | u32 int_val; | |
4be44fcd | 139 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
140 | } value; |
141 | struct acpi_video_device *bind_info; | |
142 | }; | |
143 | ||
144 | struct acpi_video_bus { | |
e6afa0de | 145 | struct acpi_device *device; |
4be44fcd | 146 | u8 dos_setting; |
1da177e4 | 147 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
148 | u8 attached_count; |
149 | struct acpi_video_bus_cap cap; | |
1da177e4 | 150 | struct acpi_video_bus_flags flags; |
4be44fcd | 151 | struct list_head video_device_list; |
bbac81f5 | 152 | struct mutex device_list_lock; /* protects video_device_list */ |
e9dab196 LY |
153 | struct input_dev *input; |
154 | char phys[32]; /* for input device */ | |
ac7729da | 155 | struct notifier_block pm_nb; |
1da177e4 LT |
156 | }; |
157 | ||
158 | struct acpi_video_device_flags { | |
4be44fcd LB |
159 | u8 crt:1; |
160 | u8 lcd:1; | |
161 | u8 tvout:1; | |
82cae999 | 162 | u8 dvi:1; |
4be44fcd LB |
163 | u8 bios:1; |
164 | u8 unknown:1; | |
82cae999 | 165 | u8 reserved:2; |
1da177e4 LT |
166 | }; |
167 | ||
168 | struct acpi_video_device_cap { | |
4be44fcd LB |
169 | u8 _ADR:1; /*Return the unique ID */ |
170 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
171 | u8 _BCM:1; /*Set the brightness level */ | |
2f3d000a | 172 | u8 _BQC:1; /* Get current brightness level */ |
c60d638e | 173 | u8 _BCQ:1; /* Some buggy BIOS uses _BCQ instead of _BQC */ |
4be44fcd LB |
174 | u8 _DDC:1; /*Return the EDID for this device */ |
175 | u8 _DCS:1; /*Return status of output device */ | |
176 | u8 _DGS:1; /*Query graphics state */ | |
177 | u8 _DSS:1; /*Device state set */ | |
1da177e4 LT |
178 | }; |
179 | ||
d32f6947 ZR |
180 | struct acpi_video_brightness_flags { |
181 | u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */ | |
d80fb99f | 182 | u8 _BCL_reversed:1; /* _BCL package is in a reversed order*/ |
1a7c618a ZR |
183 | u8 _BCL_use_index:1; /* levels in _BCL are index values */ |
184 | u8 _BCM_use_index:1; /* input of _BCM is an index value */ | |
185 | u8 _BQC_use_index:1; /* _BQC returns an index value */ | |
d32f6947 ZR |
186 | }; |
187 | ||
1da177e4 | 188 | struct acpi_video_device_brightness { |
4be44fcd LB |
189 | int curr; |
190 | int count; | |
191 | int *levels; | |
d32f6947 | 192 | struct acpi_video_brightness_flags flags; |
1da177e4 LT |
193 | }; |
194 | ||
195 | struct acpi_video_device { | |
4be44fcd LB |
196 | unsigned long device_id; |
197 | struct acpi_video_device_flags flags; | |
198 | struct acpi_video_device_cap cap; | |
199 | struct list_head entry; | |
200 | struct acpi_video_bus *video; | |
201 | struct acpi_device *dev; | |
1da177e4 | 202 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 203 | struct backlight_device *backlight; |
4a703a8f | 204 | struct thermal_cooling_device *cooling_dev; |
23b0f015 | 205 | struct output_device *output_dev; |
1da177e4 LT |
206 | }; |
207 | ||
b7171ae7 | 208 | static const char device_decode[][30] = { |
1da177e4 LT |
209 | "motherboard VGA device", |
210 | "PCI VGA device", | |
211 | "AGP VGA device", | |
212 | "UNKNOWN", | |
213 | }; | |
214 | ||
4be44fcd LB |
215 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
216 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
217 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
218 | struct acpi_video_device *device); | |
1da177e4 | 219 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
2f3d000a YL |
220 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
221 | int level); | |
222 | static int acpi_video_device_lcd_get_level_current( | |
223 | struct acpi_video_device *device, | |
70287db8 | 224 | unsigned long long *level, int init); |
4be44fcd LB |
225 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
226 | u32 level_current, u32 event); | |
c8890f90 | 227 | static int acpi_video_switch_brightness(struct acpi_video_device *device, |
4be44fcd | 228 | int event); |
23b0f015 | 229 | static int acpi_video_device_get_state(struct acpi_video_device *device, |
27663c58 | 230 | unsigned long long *state); |
23b0f015 LY |
231 | static int acpi_video_output_get(struct output_device *od); |
232 | static int acpi_video_device_set_state(struct acpi_video_device *device, int state); | |
1da177e4 | 233 | |
2f3d000a YL |
234 | /*backlight device sysfs support*/ |
235 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
236 | { | |
27663c58 | 237 | unsigned long long cur_level; |
38531e6f | 238 | int i; |
2f3d000a | 239 | struct acpi_video_device *vd = |
655bfd7a | 240 | (struct acpi_video_device *)bl_get_data(bd); |
c8890f90 | 241 | |
70287db8 | 242 | if (acpi_video_device_lcd_get_level_current(vd, &cur_level, 0)) |
c8890f90 | 243 | return -EINVAL; |
38531e6f MG |
244 | for (i = 2; i < vd->brightness->count; i++) { |
245 | if (vd->brightness->levels[i] == cur_level) | |
246 | /* The first two entries are special - see page 575 | |
247 | of the ACPI spec 3.0 */ | |
248 | return i-2; | |
249 | } | |
250 | return 0; | |
2f3d000a YL |
251 | } |
252 | ||
253 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
254 | { | |
24450c7a | 255 | int request_level = bd->props.brightness + 2; |
2f3d000a | 256 | struct acpi_video_device *vd = |
655bfd7a | 257 | (struct acpi_video_device *)bl_get_data(bd); |
24450c7a ZR |
258 | |
259 | return acpi_video_device_lcd_set_level(vd, | |
260 | vd->brightness->levels[request_level]); | |
2f3d000a YL |
261 | } |
262 | ||
599a52d1 RP |
263 | static struct backlight_ops acpi_backlight_ops = { |
264 | .get_brightness = acpi_video_get_brightness, | |
265 | .update_status = acpi_video_set_brightness, | |
266 | }; | |
267 | ||
23b0f015 LY |
268 | /*video output device sysfs support*/ |
269 | static int acpi_video_output_get(struct output_device *od) | |
270 | { | |
27663c58 | 271 | unsigned long long state; |
23b0f015 | 272 | struct acpi_video_device *vd = |
60043428 | 273 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
274 | acpi_video_device_get_state(vd, &state); |
275 | return (int)state; | |
276 | } | |
277 | ||
278 | static int acpi_video_output_set(struct output_device *od) | |
279 | { | |
280 | unsigned long state = od->request_state; | |
281 | struct acpi_video_device *vd= | |
60043428 | 282 | (struct acpi_video_device *)dev_get_drvdata(&od->dev); |
23b0f015 LY |
283 | return acpi_video_device_set_state(vd, state); |
284 | } | |
285 | ||
286 | static struct output_properties acpi_output_properties = { | |
287 | .set_state = acpi_video_output_set, | |
288 | .get_status = acpi_video_output_get, | |
289 | }; | |
702ed512 ZR |
290 | |
291 | ||
292 | /* thermal cooling device callbacks */ | |
4a703a8f | 293 | static int video_get_max_state(struct thermal_cooling_device *cooling_dev, unsigned |
6503e5df | 294 | long *state) |
702ed512 | 295 | { |
4a703a8f | 296 | struct acpi_device *device = cooling_dev->devdata; |
702ed512 ZR |
297 | struct acpi_video_device *video = acpi_driver_data(device); |
298 | ||
6503e5df MG |
299 | *state = video->brightness->count - 3; |
300 | return 0; | |
702ed512 ZR |
301 | } |
302 | ||
4a703a8f | 303 | static int video_get_cur_state(struct thermal_cooling_device *cooling_dev, unsigned |
6503e5df | 304 | long *state) |
702ed512 | 305 | { |
4a703a8f | 306 | struct acpi_device *device = cooling_dev->devdata; |
702ed512 | 307 | struct acpi_video_device *video = acpi_driver_data(device); |
27663c58 | 308 | unsigned long long level; |
6503e5df | 309 | int offset; |
702ed512 | 310 | |
70287db8 | 311 | if (acpi_video_device_lcd_get_level_current(video, &level, 0)) |
c8890f90 | 312 | return -EINVAL; |
6503e5df MG |
313 | for (offset = 2; offset < video->brightness->count; offset++) |
314 | if (level == video->brightness->levels[offset]) { | |
315 | *state = video->brightness->count - offset - 1; | |
316 | return 0; | |
317 | } | |
702ed512 ZR |
318 | |
319 | return -EINVAL; | |
320 | } | |
321 | ||
322 | static int | |
4a703a8f | 323 | video_set_cur_state(struct thermal_cooling_device *cooling_dev, unsigned long state) |
702ed512 | 324 | { |
4a703a8f | 325 | struct acpi_device *device = cooling_dev->devdata; |
702ed512 ZR |
326 | struct acpi_video_device *video = acpi_driver_data(device); |
327 | int level; | |
328 | ||
329 | if ( state >= video->brightness->count - 2) | |
330 | return -EINVAL; | |
331 | ||
332 | state = video->brightness->count - state; | |
333 | level = video->brightness->levels[state -1]; | |
334 | return acpi_video_device_lcd_set_level(video, level); | |
335 | } | |
336 | ||
337 | static struct thermal_cooling_device_ops video_cooling_ops = { | |
338 | .get_max_state = video_get_max_state, | |
339 | .get_cur_state = video_get_cur_state, | |
340 | .set_cur_state = video_set_cur_state, | |
341 | }; | |
342 | ||
1da177e4 LT |
343 | /* -------------------------------------------------------------------------- |
344 | Video Management | |
345 | -------------------------------------------------------------------------- */ | |
346 | ||
347 | /* device */ | |
348 | ||
1da177e4 | 349 | static int |
4be44fcd | 350 | acpi_video_device_get_state(struct acpi_video_device *device, |
27663c58 | 351 | unsigned long long *state) |
1da177e4 | 352 | { |
4be44fcd | 353 | int status; |
1da177e4 | 354 | |
90130268 | 355 | status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state); |
1da177e4 | 356 | |
d550d98d | 357 | return status; |
1da177e4 LT |
358 | } |
359 | ||
360 | static int | |
4be44fcd | 361 | acpi_video_device_set_state(struct acpi_video_device *device, int state) |
1da177e4 | 362 | { |
4be44fcd LB |
363 | int status; |
364 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
365 | struct acpi_object_list args = { 1, &arg0 }; | |
27663c58 | 366 | unsigned long long ret; |
1da177e4 | 367 | |
1da177e4 LT |
368 | |
369 | arg0.integer.value = state; | |
90130268 | 370 | status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret); |
1da177e4 | 371 | |
d550d98d | 372 | return status; |
1da177e4 LT |
373 | } |
374 | ||
375 | static int | |
4be44fcd LB |
376 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
377 | union acpi_object **levels) | |
1da177e4 | 378 | { |
4be44fcd LB |
379 | int status; |
380 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
381 | union acpi_object *obj; | |
1da177e4 | 382 | |
1da177e4 LT |
383 | |
384 | *levels = NULL; | |
385 | ||
90130268 | 386 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 387 | if (!ACPI_SUCCESS(status)) |
d550d98d | 388 | return status; |
4be44fcd | 389 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 390 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 391 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
392 | status = -EFAULT; |
393 | goto err; | |
394 | } | |
395 | ||
396 | *levels = obj; | |
397 | ||
d550d98d | 398 | return 0; |
1da177e4 | 399 | |
4be44fcd | 400 | err: |
6044ec88 | 401 | kfree(buffer.pointer); |
1da177e4 | 402 | |
d550d98d | 403 | return status; |
1da177e4 LT |
404 | } |
405 | ||
406 | static int | |
4be44fcd | 407 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 408 | { |
24450c7a | 409 | int status; |
4be44fcd LB |
410 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
411 | struct acpi_object_list args = { 1, &arg0 }; | |
9e6dada9 | 412 | int state; |
1da177e4 | 413 | |
1da177e4 | 414 | arg0.integer.value = level; |
1da177e4 | 415 | |
24450c7a ZR |
416 | status = acpi_evaluate_object(device->dev->handle, "_BCM", |
417 | &args, NULL); | |
418 | if (ACPI_FAILURE(status)) { | |
419 | ACPI_ERROR((AE_INFO, "Evaluating _BCM failed")); | |
420 | return -EIO; | |
421 | } | |
422 | ||
4500ca8e | 423 | device->brightness->curr = level; |
9e6dada9 | 424 | for (state = 2; state < device->brightness->count; state++) |
24450c7a | 425 | if (level == device->brightness->levels[state]) { |
1a7c618a ZR |
426 | if (device->backlight) |
427 | device->backlight->props.brightness = state - 2; | |
24450c7a ZR |
428 | return 0; |
429 | } | |
9e6dada9 | 430 | |
24450c7a ZR |
431 | ACPI_ERROR((AE_INFO, "Current brightness invalid")); |
432 | return -EINVAL; | |
1da177e4 LT |
433 | } |
434 | ||
45cb50e6 ZR |
435 | /* |
436 | * For some buggy _BQC methods, we need to add a constant value to | |
437 | * the _BQC return value to get the actual current brightness level | |
438 | */ | |
439 | ||
440 | static int bqc_offset_aml_bug_workaround; | |
441 | static int __init video_set_bqc_offset(const struct dmi_system_id *d) | |
442 | { | |
443 | bqc_offset_aml_bug_workaround = 9; | |
444 | return 0; | |
445 | } | |
446 | ||
447 | static struct dmi_system_id video_dmi_table[] __initdata = { | |
448 | /* | |
449 | * Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121 | |
450 | */ | |
451 | { | |
452 | .callback = video_set_bqc_offset, | |
453 | .ident = "Acer Aspire 5720", | |
454 | .matches = { | |
455 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
456 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"), | |
457 | }, | |
458 | }, | |
5afc4abe LB |
459 | { |
460 | .callback = video_set_bqc_offset, | |
461 | .ident = "Acer Aspire 5710Z", | |
462 | .matches = { | |
463 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
464 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710Z"), | |
465 | }, | |
466 | }, | |
34ac272b ZR |
467 | { |
468 | .callback = video_set_bqc_offset, | |
469 | .ident = "eMachines E510", | |
470 | .matches = { | |
471 | DMI_MATCH(DMI_BOARD_VENDOR, "EMACHINES"), | |
472 | DMI_MATCH(DMI_PRODUCT_NAME, "eMachines E510"), | |
473 | }, | |
474 | }, | |
93bcece2 ZR |
475 | { |
476 | .callback = video_set_bqc_offset, | |
477 | .ident = "Acer Aspire 5315", | |
478 | .matches = { | |
479 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
480 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"), | |
481 | }, | |
482 | }, | |
152a4e63 ZR |
483 | { |
484 | .callback = video_set_bqc_offset, | |
485 | .ident = "Acer Aspire 7720", | |
486 | .matches = { | |
487 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
488 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"), | |
489 | }, | |
490 | }, | |
45cb50e6 ZR |
491 | {} |
492 | }; | |
493 | ||
1da177e4 | 494 | static int |
4be44fcd | 495 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
70287db8 | 496 | unsigned long long *level, int init) |
1da177e4 | 497 | { |
c8890f90 | 498 | acpi_status status = AE_OK; |
4e231fa4 | 499 | int i; |
c8890f90 | 500 | |
c60d638e ZR |
501 | if (device->cap._BQC || device->cap._BCQ) { |
502 | char *buf = device->cap._BQC ? "_BQC" : "_BCQ"; | |
503 | ||
504 | status = acpi_evaluate_integer(device->dev->handle, buf, | |
c8890f90 ZR |
505 | NULL, level); |
506 | if (ACPI_SUCCESS(status)) { | |
1a7c618a ZR |
507 | if (device->brightness->flags._BQC_use_index) { |
508 | if (device->brightness->flags._BCL_reversed) | |
509 | *level = device->brightness->count | |
510 | - 3 - (*level); | |
511 | *level = device->brightness->levels[*level + 2]; | |
512 | ||
513 | } | |
45cb50e6 | 514 | *level += bqc_offset_aml_bug_workaround; |
4e231fa4 VS |
515 | for (i = 2; i < device->brightness->count; i++) |
516 | if (device->brightness->levels[i] == *level) { | |
517 | device->brightness->curr = *level; | |
518 | return 0; | |
519 | } | |
70287db8 MG |
520 | if (!init) { |
521 | /* | |
522 | * BQC returned an invalid level. | |
523 | * Stop using it. | |
524 | */ | |
525 | ACPI_WARNING((AE_INFO, | |
526 | "%s returned an invalid level", | |
527 | buf)); | |
528 | device->cap._BQC = device->cap._BCQ = 0; | |
529 | } | |
c8890f90 ZR |
530 | } else { |
531 | /* Fixme: | |
532 | * should we return an error or ignore this failure? | |
533 | * dev->brightness->curr is a cached value which stores | |
534 | * the correct current backlight level in most cases. | |
535 | * ACPI video backlight still works w/ buggy _BQC. | |
536 | * http://bugzilla.kernel.org/show_bug.cgi?id=12233 | |
537 | */ | |
c60d638e ZR |
538 | ACPI_WARNING((AE_INFO, "Evaluating %s failed", buf)); |
539 | device->cap._BQC = device->cap._BCQ = 0; | |
c8890f90 ZR |
540 | } |
541 | } | |
542 | ||
4500ca8e | 543 | *level = device->brightness->curr; |
c8890f90 | 544 | return 0; |
1da177e4 LT |
545 | } |
546 | ||
547 | static int | |
4be44fcd LB |
548 | acpi_video_device_EDID(struct acpi_video_device *device, |
549 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 550 | { |
4be44fcd LB |
551 | int status; |
552 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
553 | union acpi_object *obj; | |
554 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
555 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 556 | |
1da177e4 LT |
557 | |
558 | *edid = NULL; | |
559 | ||
560 | if (!device) | |
d550d98d | 561 | return -ENODEV; |
1da177e4 LT |
562 | if (length == 128) |
563 | arg0.integer.value = 1; | |
564 | else if (length == 256) | |
565 | arg0.integer.value = 2; | |
566 | else | |
d550d98d | 567 | return -EINVAL; |
1da177e4 | 568 | |
90130268 | 569 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 570 | if (ACPI_FAILURE(status)) |
d550d98d | 571 | return -ENODEV; |
1da177e4 | 572 | |
50dd0969 | 573 | obj = buffer.pointer; |
1da177e4 LT |
574 | |
575 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
576 | *edid = obj; | |
577 | else { | |
6468463a | 578 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
579 | status = -EFAULT; |
580 | kfree(obj); | |
581 | } | |
582 | ||
d550d98d | 583 | return status; |
1da177e4 LT |
584 | } |
585 | ||
1da177e4 LT |
586 | /* bus */ |
587 | ||
1da177e4 LT |
588 | /* |
589 | * Arg: | |
590 | * video : video bus device pointer | |
591 | * bios_flag : | |
592 | * 0. The system BIOS should NOT automatically switch(toggle) | |
593 | * the active display output. | |
594 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 595 | * active display output. No switch event. |
1da177e4 LT |
596 | * 2. The _DGS value should be locked. |
597 | * 3. The system BIOS should not automatically switch (toggle) the | |
598 | * active display output, but instead generate the display switch | |
599 | * event notify code. | |
600 | * lcd_flag : | |
601 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 602 | * of the LCD when the power changes from AC to DC |
1da177e4 | 603 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 604 | * level of the LCD when the power changes from AC to DC. |
1da177e4 LT |
605 | * Return Value: |
606 | * -1 wrong arg. | |
607 | */ | |
608 | ||
609 | static int | |
4be44fcd | 610 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 611 | { |
439913ff | 612 | u64 status = 0; |
4be44fcd LB |
613 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
614 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 615 | |
1da177e4 | 616 | |
4be44fcd | 617 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) { |
1da177e4 LT |
618 | status = -1; |
619 | goto Failed; | |
620 | } | |
621 | arg0.integer.value = (lcd_flag << 2) | bios_flag; | |
622 | video->dos_setting = arg0.integer.value; | |
90130268 | 623 | acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL); |
1da177e4 | 624 | |
4be44fcd | 625 | Failed: |
d550d98d | 626 | return status; |
1da177e4 LT |
627 | } |
628 | ||
935e5f29 ZR |
629 | /* |
630 | * Simple comparison function used to sort backlight levels. | |
631 | */ | |
632 | ||
633 | static int | |
634 | acpi_video_cmp_level(const void *a, const void *b) | |
635 | { | |
636 | return *(int *)a - *(int *)b; | |
637 | } | |
638 | ||
1da177e4 LT |
639 | /* |
640 | * Arg: | |
641 | * device : video output device (LCD, CRT, ..) | |
642 | * | |
643 | * Return Value: | |
469778c1 JJ |
644 | * Maximum brightness level |
645 | * | |
646 | * Allocate and initialize device->brightness. | |
647 | */ | |
648 | ||
649 | static int | |
650 | acpi_video_init_brightness(struct acpi_video_device *device) | |
651 | { | |
652 | union acpi_object *obj = NULL; | |
d32f6947 | 653 | int i, max_level = 0, count = 0, level_ac_battery = 0; |
1a7c618a | 654 | unsigned long long level, level_old; |
469778c1 JJ |
655 | union acpi_object *o; |
656 | struct acpi_video_device_brightness *br = NULL; | |
1a7c618a | 657 | int result = -EINVAL; |
469778c1 JJ |
658 | |
659 | if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { | |
660 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available " | |
661 | "LCD brightness level\n")); | |
662 | goto out; | |
663 | } | |
664 | ||
665 | if (obj->package.count < 2) | |
666 | goto out; | |
667 | ||
668 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
669 | if (!br) { | |
670 | printk(KERN_ERR "can't allocate memory\n"); | |
1a7c618a | 671 | result = -ENOMEM; |
469778c1 JJ |
672 | goto out; |
673 | } | |
674 | ||
d32f6947 | 675 | br->levels = kmalloc((obj->package.count + 2) * sizeof *(br->levels), |
469778c1 | 676 | GFP_KERNEL); |
1a7c618a ZR |
677 | if (!br->levels) { |
678 | result = -ENOMEM; | |
469778c1 | 679 | goto out_free; |
1a7c618a | 680 | } |
469778c1 JJ |
681 | |
682 | for (i = 0; i < obj->package.count; i++) { | |
683 | o = (union acpi_object *)&obj->package.elements[i]; | |
684 | if (o->type != ACPI_TYPE_INTEGER) { | |
685 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
686 | continue; | |
687 | } | |
688 | br->levels[count] = (u32) o->integer.value; | |
689 | ||
690 | if (br->levels[count] > max_level) | |
691 | max_level = br->levels[count]; | |
692 | count++; | |
693 | } | |
694 | ||
d32f6947 ZR |
695 | /* |
696 | * some buggy BIOS don't export the levels | |
697 | * when machine is on AC/Battery in _BCL package. | |
698 | * In this case, the first two elements in _BCL packages | |
699 | * are also supported brightness levels that OS should take care of. | |
700 | */ | |
90af2cf6 ZR |
701 | for (i = 2; i < count; i++) { |
702 | if (br->levels[i] == br->levels[0]) | |
d32f6947 | 703 | level_ac_battery++; |
90af2cf6 ZR |
704 | if (br->levels[i] == br->levels[1]) |
705 | level_ac_battery++; | |
706 | } | |
d32f6947 ZR |
707 | |
708 | if (level_ac_battery < 2) { | |
709 | level_ac_battery = 2 - level_ac_battery; | |
710 | br->flags._BCL_no_ac_battery_levels = 1; | |
711 | for (i = (count - 1 + level_ac_battery); i >= 2; i--) | |
712 | br->levels[i] = br->levels[i - level_ac_battery]; | |
713 | count += level_ac_battery; | |
714 | } else if (level_ac_battery > 2) | |
715 | ACPI_ERROR((AE_INFO, "Too many duplicates in _BCL package\n")); | |
716 | ||
d80fb99f ZR |
717 | /* Check if the _BCL package is in a reversed order */ |
718 | if (max_level == br->levels[2]) { | |
719 | br->flags._BCL_reversed = 1; | |
720 | sort(&br->levels[2], count - 2, sizeof(br->levels[2]), | |
721 | acpi_video_cmp_level, NULL); | |
722 | } else if (max_level != br->levels[count - 1]) | |
723 | ACPI_ERROR((AE_INFO, | |
724 | "Found unordered _BCL package\n")); | |
469778c1 JJ |
725 | |
726 | br->count = count; | |
727 | device->brightness = br; | |
1a7c618a ZR |
728 | |
729 | /* Check the input/output of _BQC/_BCL/_BCM */ | |
730 | if ((max_level < 100) && (max_level <= (count - 2))) | |
731 | br->flags._BCL_use_index = 1; | |
732 | ||
733 | /* | |
734 | * _BCM is always consistent with _BCL, | |
735 | * at least for all the laptops we have ever seen. | |
736 | */ | |
737 | br->flags._BCM_use_index = br->flags._BCL_use_index; | |
738 | ||
739 | /* _BQC uses INDEX while _BCL uses VALUE in some laptops */ | |
90c53ca4 | 740 | br->curr = level = max_level; |
e047cca6 ZR |
741 | |
742 | if (!device->cap._BQC) | |
743 | goto set_level; | |
744 | ||
70287db8 | 745 | result = acpi_video_device_lcd_get_level_current(device, &level_old, 1); |
1a7c618a ZR |
746 | if (result) |
747 | goto out_free_levels; | |
748 | ||
e047cca6 ZR |
749 | /* |
750 | * Set the level to maximum and check if _BQC uses indexed value | |
751 | */ | |
752 | result = acpi_video_device_lcd_set_level(device, max_level); | |
1a7c618a ZR |
753 | if (result) |
754 | goto out_free_levels; | |
755 | ||
70287db8 | 756 | result = acpi_video_device_lcd_get_level_current(device, &level, 0); |
1a7c618a ZR |
757 | if (result) |
758 | goto out_free_levels; | |
759 | ||
e047cca6 ZR |
760 | br->flags._BQC_use_index = (level == max_level ? 0 : 1); |
761 | ||
90c53ca4 ZR |
762 | if (!br->flags._BQC_use_index) { |
763 | /* | |
764 | * Set the backlight to the initial state. | |
765 | * On some buggy laptops, _BQC returns an uninitialized value | |
766 | * when invoked for the first time, i.e. level_old is invalid. | |
767 | * set the backlight to max_level in this case | |
768 | */ | |
769 | for (i = 2; i < br->count; i++) | |
770 | if (level_old == br->levels[i]) | |
771 | level = level_old; | |
e047cca6 | 772 | goto set_level; |
90c53ca4 | 773 | } |
e047cca6 ZR |
774 | |
775 | if (br->flags._BCL_reversed) | |
776 | level_old = (br->count - 1) - level_old; | |
90c53ca4 | 777 | level = br->levels[level_old]; |
e047cca6 ZR |
778 | |
779 | set_level: | |
90c53ca4 | 780 | result = acpi_video_device_lcd_set_level(device, level); |
e047cca6 ZR |
781 | if (result) |
782 | goto out_free_levels; | |
1a7c618a | 783 | |
d32f6947 ZR |
784 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
785 | "found %d brightness levels\n", count - 2)); | |
469778c1 | 786 | kfree(obj); |
1a7c618a | 787 | return result; |
469778c1 JJ |
788 | |
789 | out_free_levels: | |
790 | kfree(br->levels); | |
791 | out_free: | |
792 | kfree(br); | |
793 | out: | |
794 | device->brightness = NULL; | |
795 | kfree(obj); | |
1a7c618a | 796 | return result; |
469778c1 JJ |
797 | } |
798 | ||
799 | /* | |
800 | * Arg: | |
801 | * device : video output device (LCD, CRT, ..) | |
802 | * | |
803 | * Return Value: | |
1da177e4 LT |
804 | * None |
805 | * | |
98fb8fe1 | 806 | * Find out all required AML methods defined under the output |
1da177e4 LT |
807 | * device. |
808 | */ | |
809 | ||
4be44fcd | 810 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 811 | { |
1da177e4 | 812 | acpi_handle h_dummy1; |
1da177e4 | 813 | |
90130268 | 814 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
815 | device->cap._ADR = 1; |
816 | } | |
90130268 | 817 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 818 | device->cap._BCL = 1; |
1da177e4 | 819 | } |
90130268 | 820 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 821 | device->cap._BCM = 1; |
1da177e4 | 822 | } |
2f3d000a YL |
823 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
824 | device->cap._BQC = 1; | |
c60d638e ZR |
825 | else if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCQ", |
826 | &h_dummy1))) { | |
827 | printk(KERN_WARNING FW_BUG "_BCQ is used instead of _BQC\n"); | |
828 | device->cap._BCQ = 1; | |
829 | } | |
830 | ||
90130268 | 831 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 832 | device->cap._DDC = 1; |
1da177e4 | 833 | } |
90130268 | 834 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) { |
1da177e4 LT |
835 | device->cap._DCS = 1; |
836 | } | |
90130268 | 837 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) { |
1da177e4 LT |
838 | device->cap._DGS = 1; |
839 | } | |
90130268 | 840 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) { |
1da177e4 LT |
841 | device->cap._DSS = 1; |
842 | } | |
843 | ||
1a7c618a | 844 | if (acpi_video_backlight_support()) { |
a19a6ee6 | 845 | struct backlight_properties props; |
702ed512 | 846 | int result; |
2f3d000a YL |
847 | static int count = 0; |
848 | char *name; | |
1a7c618a ZR |
849 | |
850 | result = acpi_video_init_brightness(device); | |
851 | if (result) | |
852 | return; | |
aeb834d9 | 853 | name = kasprintf(GFP_KERNEL, "acpi_video%d", count); |
2f3d000a YL |
854 | if (!name) |
855 | return; | |
aeb834d9 | 856 | count++; |
2f3d000a | 857 | |
a19a6ee6 MG |
858 | memset(&props, 0, sizeof(struct backlight_properties)); |
859 | props.max_brightness = device->brightness->count - 3; | |
860 | device->backlight = backlight_device_register(name, NULL, device, | |
861 | &acpi_backlight_ops, | |
862 | &props); | |
2f3d000a | 863 | kfree(name); |
e01ce79b ZR |
864 | if (IS_ERR(device->backlight)) |
865 | return; | |
702ed512 | 866 | |
ac7729da RW |
867 | /* |
868 | * Save current brightness level in case we have to restore it | |
869 | * before acpi_video_device_lcd_set_level() is called next time. | |
870 | */ | |
871 | device->backlight->props.brightness = | |
872 | acpi_video_get_brightness(device->backlight); | |
702ed512 | 873 | |
056c308d ZR |
874 | result = sysfs_create_link(&device->backlight->dev.kobj, |
875 | &device->dev->dev.kobj, "device"); | |
876 | if (result) | |
877 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
878 | ||
4a703a8f | 879 | device->cooling_dev = thermal_cooling_device_register("LCD", |
702ed512 | 880 | device->dev, &video_cooling_ops); |
4a703a8f | 881 | if (IS_ERR(device->cooling_dev)) { |
4b4fe3b6 | 882 | /* |
4a703a8f | 883 | * Set cooling_dev to NULL so we don't crash trying to |
4b4fe3b6 DT |
884 | * free it. |
885 | * Also, why the hell we are returning early and | |
886 | * not attempt to register video output if cooling | |
887 | * device registration failed? | |
888 | * -- dtor | |
889 | */ | |
4a703a8f | 890 | device->cooling_dev = NULL; |
43ff39f2 | 891 | return; |
4b4fe3b6 | 892 | } |
43ff39f2 | 893 | |
fc3a8828 | 894 | dev_info(&device->dev->dev, "registered as cooling_device%d\n", |
4a703a8f | 895 | device->cooling_dev->id); |
9030062f | 896 | result = sysfs_create_link(&device->dev->dev.kobj, |
4a703a8f | 897 | &device->cooling_dev->device.kobj, |
9030062f JL |
898 | "thermal_cooling"); |
899 | if (result) | |
900 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
4a703a8f | 901 | result = sysfs_create_link(&device->cooling_dev->device.kobj, |
9030062f JL |
902 | &device->dev->dev.kobj, "device"); |
903 | if (result) | |
904 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
905 | ||
2f3d000a | 906 | } |
c3d6de69 TR |
907 | |
908 | if (acpi_video_display_switch_support()) { | |
909 | ||
910 | if (device->cap._DCS && device->cap._DSS) { | |
911 | static int count; | |
912 | char *name; | |
aeb834d9 | 913 | name = kasprintf(GFP_KERNEL, "acpi_video%d", count); |
c3d6de69 TR |
914 | if (!name) |
915 | return; | |
aeb834d9 | 916 | count++; |
c3d6de69 TR |
917 | device->output_dev = video_output_register(name, |
918 | NULL, device, &acpi_output_properties); | |
919 | kfree(name); | |
920 | } | |
23b0f015 | 921 | } |
1da177e4 LT |
922 | } |
923 | ||
924 | /* | |
925 | * Arg: | |
926 | * device : video output device (VGA) | |
927 | * | |
928 | * Return Value: | |
929 | * None | |
930 | * | |
98fb8fe1 | 931 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
932 | */ |
933 | ||
4be44fcd | 934 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 935 | { |
4be44fcd | 936 | acpi_handle h_dummy1; |
1da177e4 | 937 | |
90130268 | 938 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
939 | video->cap._DOS = 1; |
940 | } | |
90130268 | 941 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
942 | video->cap._DOD = 1; |
943 | } | |
90130268 | 944 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
945 | video->cap._ROM = 1; |
946 | } | |
90130268 | 947 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
948 | video->cap._GPD = 1; |
949 | } | |
90130268 | 950 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
951 | video->cap._SPD = 1; |
952 | } | |
90130268 | 953 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
954 | video->cap._VPO = 1; |
955 | } | |
956 | } | |
957 | ||
958 | /* | |
959 | * Check whether the video bus device has required AML method to | |
960 | * support the desired features | |
961 | */ | |
962 | ||
4be44fcd | 963 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 964 | { |
4be44fcd | 965 | acpi_status status = -ENOENT; |
1e4cffe7 | 966 | struct pci_dev *dev; |
1da177e4 LT |
967 | |
968 | if (!video) | |
d550d98d | 969 | return -EINVAL; |
1da177e4 | 970 | |
1e4cffe7 | 971 | dev = acpi_get_pci_dev(video->device->handle); |
22c13f9d TR |
972 | if (!dev) |
973 | return -ENODEV; | |
1e4cffe7 | 974 | pci_dev_put(dev); |
22c13f9d | 975 | |
1da177e4 LT |
976 | /* Since there is no HID, CID and so on for VGA driver, we have |
977 | * to check well known required nodes. | |
978 | */ | |
979 | ||
98fb8fe1 | 980 | /* Does this device support video switching? */ |
3a1151e3 SB |
981 | if (video->cap._DOS || video->cap._DOD) { |
982 | if (!video->cap._DOS) { | |
983 | printk(KERN_WARNING FW_BUG | |
984 | "ACPI(%s) defines _DOD but not _DOS\n", | |
985 | acpi_device_bid(video->device)); | |
986 | } | |
1da177e4 LT |
987 | video->flags.multihead = 1; |
988 | status = 0; | |
989 | } | |
990 | ||
98fb8fe1 | 991 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 992 | if (video->cap._ROM) { |
1da177e4 LT |
993 | video->flags.rom = 1; |
994 | status = 0; | |
995 | } | |
996 | ||
98fb8fe1 | 997 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 998 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
999 | video->flags.post = 1; |
1000 | status = 0; | |
1001 | } | |
1002 | ||
d550d98d | 1003 | return status; |
1da177e4 LT |
1004 | } |
1005 | ||
1da177e4 LT |
1006 | /* -------------------------------------------------------------------------- |
1007 | Driver Interface | |
1008 | -------------------------------------------------------------------------- */ | |
1009 | ||
1010 | /* device interface */ | |
82cae999 RZ |
1011 | static struct acpi_video_device_attrib* |
1012 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1013 | { | |
78eed028 DT |
1014 | struct acpi_video_enumerated_device *ids; |
1015 | int i; | |
1016 | ||
1017 | for (i = 0; i < video->attached_count; i++) { | |
1018 | ids = &video->attached_array[i]; | |
1019 | if ((ids->value.int_val & 0xffff) == device_id) | |
1020 | return &ids->value.attrib; | |
1021 | } | |
82cae999 | 1022 | |
82cae999 RZ |
1023 | return NULL; |
1024 | } | |
1da177e4 | 1025 | |
e92a7162 MG |
1026 | static int |
1027 | acpi_video_get_device_type(struct acpi_video_bus *video, | |
1028 | unsigned long device_id) | |
1029 | { | |
1030 | struct acpi_video_enumerated_device *ids; | |
1031 | int i; | |
1032 | ||
1033 | for (i = 0; i < video->attached_count; i++) { | |
1034 | ids = &video->attached_array[i]; | |
1035 | if ((ids->value.int_val & 0xffff) == device_id) | |
1036 | return ids->value.int_val; | |
1037 | } | |
1038 | ||
1039 | return 0; | |
1040 | } | |
1041 | ||
1da177e4 | 1042 | static int |
4be44fcd LB |
1043 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1044 | struct acpi_video_bus *video) | |
1da177e4 | 1045 | { |
27663c58 | 1046 | unsigned long long device_id; |
e92a7162 | 1047 | int status, device_type; |
4be44fcd | 1048 | struct acpi_video_device *data; |
82cae999 | 1049 | struct acpi_video_device_attrib* attribute; |
1da177e4 LT |
1050 | |
1051 | if (!device || !video) | |
d550d98d | 1052 | return -EINVAL; |
1da177e4 | 1053 | |
4be44fcd LB |
1054 | status = |
1055 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
1da177e4 LT |
1056 | if (ACPI_SUCCESS(status)) { |
1057 | ||
36bcbec7 | 1058 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1da177e4 | 1059 | if (!data) |
d550d98d | 1060 | return -ENOMEM; |
1da177e4 | 1061 | |
1da177e4 LT |
1062 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1063 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 1064 | device->driver_data = data; |
1da177e4 LT |
1065 | |
1066 | data->device_id = device_id; | |
1067 | data->video = video; | |
1068 | data->dev = device; | |
1069 | ||
82cae999 RZ |
1070 | attribute = acpi_video_get_device_attr(video, device_id); |
1071 | ||
1072 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1073 | switch (attribute->display_type) { | |
1074 | case ACPI_VIDEO_DISPLAY_CRT: | |
1075 | data->flags.crt = 1; | |
1076 | break; | |
1077 | case ACPI_VIDEO_DISPLAY_TV: | |
1078 | data->flags.tvout = 1; | |
1079 | break; | |
1080 | case ACPI_VIDEO_DISPLAY_DVI: | |
1081 | data->flags.dvi = 1; | |
1082 | break; | |
1083 | case ACPI_VIDEO_DISPLAY_LCD: | |
1084 | data->flags.lcd = 1; | |
1085 | break; | |
1086 | default: | |
1087 | data->flags.unknown = 1; | |
1088 | break; | |
1089 | } | |
1090 | if(attribute->bios_can_detect) | |
1091 | data->flags.bios = 1; | |
e92a7162 MG |
1092 | } else { |
1093 | /* Check for legacy IDs */ | |
1094 | device_type = acpi_video_get_device_type(video, | |
1095 | device_id); | |
1096 | /* Ignore bits 16 and 18-20 */ | |
1097 | switch (device_type & 0xffe2ffff) { | |
1098 | case ACPI_VIDEO_DISPLAY_LEGACY_MONITOR: | |
1099 | data->flags.crt = 1; | |
1100 | break; | |
1101 | case ACPI_VIDEO_DISPLAY_LEGACY_PANEL: | |
1102 | data->flags.lcd = 1; | |
1103 | break; | |
1104 | case ACPI_VIDEO_DISPLAY_LEGACY_TV: | |
1105 | data->flags.tvout = 1; | |
1106 | break; | |
1107 | default: | |
1108 | data->flags.unknown = 1; | |
1109 | } | |
1110 | } | |
4be44fcd | 1111 | |
1da177e4 LT |
1112 | acpi_video_device_bind(video, data); |
1113 | acpi_video_device_find_cap(data); | |
1114 | ||
90130268 | 1115 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1116 | ACPI_DEVICE_NOTIFY, |
1117 | acpi_video_device_notify, | |
1118 | data); | |
1da177e4 | 1119 | if (ACPI_FAILURE(status)) { |
55ac9a01 LM |
1120 | printk(KERN_ERR PREFIX |
1121 | "Error installing notify handler\n"); | |
973bf491 YL |
1122 | if(data->brightness) |
1123 | kfree(data->brightness->levels); | |
1124 | kfree(data->brightness); | |
1125 | kfree(data); | |
1126 | return -ENODEV; | |
1da177e4 LT |
1127 | } |
1128 | ||
bbac81f5 | 1129 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1130 | list_add_tail(&data->entry, &video->video_device_list); |
bbac81f5 | 1131 | mutex_unlock(&video->device_list_lock); |
1da177e4 | 1132 | |
d550d98d | 1133 | return 0; |
1da177e4 LT |
1134 | } |
1135 | ||
d550d98d | 1136 | return -ENOENT; |
1da177e4 LT |
1137 | } |
1138 | ||
1139 | /* | |
1140 | * Arg: | |
1141 | * video : video bus device | |
1142 | * | |
1143 | * Return: | |
1144 | * none | |
1145 | * | |
1146 | * Enumerate the video device list of the video bus, | |
1147 | * bind the ids with the corresponding video devices | |
1148 | * under the video bus. | |
4be44fcd | 1149 | */ |
1da177e4 | 1150 | |
4be44fcd | 1151 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1152 | { |
ff102ea9 DT |
1153 | struct acpi_video_device *dev; |
1154 | ||
bbac81f5 | 1155 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1156 | |
1157 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1158 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1159 | |
bbac81f5 | 1160 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1161 | } |
1162 | ||
1163 | /* | |
1164 | * Arg: | |
1165 | * video : video bus device | |
1166 | * device : video output device under the video | |
1167 | * bus | |
1168 | * | |
1169 | * Return: | |
1170 | * none | |
1171 | * | |
1172 | * Bind the ids with the corresponding video devices | |
1173 | * under the video bus. | |
4be44fcd | 1174 | */ |
1da177e4 LT |
1175 | |
1176 | static void | |
4be44fcd LB |
1177 | acpi_video_device_bind(struct acpi_video_bus *video, |
1178 | struct acpi_video_device *device) | |
1da177e4 | 1179 | { |
78eed028 | 1180 | struct acpi_video_enumerated_device *ids; |
4be44fcd | 1181 | int i; |
1da177e4 | 1182 | |
78eed028 DT |
1183 | for (i = 0; i < video->attached_count; i++) { |
1184 | ids = &video->attached_array[i]; | |
1185 | if (device->device_id == (ids->value.int_val & 0xffff)) { | |
1186 | ids->bind_info = device; | |
1da177e4 LT |
1187 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); |
1188 | } | |
1189 | } | |
1da177e4 LT |
1190 | } |
1191 | ||
1192 | /* | |
1193 | * Arg: | |
1194 | * video : video bus device | |
1195 | * | |
1196 | * Return: | |
1197 | * < 0 : error | |
1198 | * | |
1199 | * Call _DOD to enumerate all devices attached to display adapter | |
1200 | * | |
4be44fcd | 1201 | */ |
1da177e4 LT |
1202 | |
1203 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1204 | { | |
4be44fcd LB |
1205 | int status; |
1206 | int count; | |
1207 | int i; | |
78eed028 | 1208 | struct acpi_video_enumerated_device *active_list; |
4be44fcd LB |
1209 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1210 | union acpi_object *dod = NULL; | |
1211 | union acpi_object *obj; | |
1da177e4 | 1212 | |
90130268 | 1213 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1214 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1215 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1216 | return status; |
1da177e4 LT |
1217 | } |
1218 | ||
50dd0969 | 1219 | dod = buffer.pointer; |
1da177e4 | 1220 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1221 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1222 | status = -EFAULT; |
1223 | goto out; | |
1224 | } | |
1225 | ||
1226 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1227 | dod->package.count)); |
1da177e4 | 1228 | |
78eed028 DT |
1229 | active_list = kcalloc(1 + dod->package.count, |
1230 | sizeof(struct acpi_video_enumerated_device), | |
1231 | GFP_KERNEL); | |
1232 | if (!active_list) { | |
1da177e4 LT |
1233 | status = -ENOMEM; |
1234 | goto out; | |
1235 | } | |
1236 | ||
1237 | count = 0; | |
1238 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1239 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1240 | |
1241 | if (obj->type != ACPI_TYPE_INTEGER) { | |
78eed028 DT |
1242 | printk(KERN_ERR PREFIX |
1243 | "Invalid _DOD data in element %d\n", i); | |
1244 | continue; | |
1da177e4 | 1245 | } |
78eed028 DT |
1246 | |
1247 | active_list[count].value.int_val = obj->integer.value; | |
1248 | active_list[count].bind_info = NULL; | |
4be44fcd LB |
1249 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1250 | (int)obj->integer.value)); | |
1da177e4 LT |
1251 | count++; |
1252 | } | |
1da177e4 | 1253 | |
6044ec88 | 1254 | kfree(video->attached_array); |
4be44fcd | 1255 | |
78eed028 | 1256 | video->attached_array = active_list; |
1da177e4 | 1257 | video->attached_count = count; |
78eed028 DT |
1258 | |
1259 | out: | |
02438d87 | 1260 | kfree(buffer.pointer); |
d550d98d | 1261 | return status; |
1da177e4 LT |
1262 | } |
1263 | ||
4be44fcd LB |
1264 | static int |
1265 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1266 | u32 level_current, u32 event) | |
1da177e4 | 1267 | { |
63f0edfc | 1268 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
1269 | max = max_below = 0; |
1270 | min = min_above = 255; | |
63f0edfc | 1271 | /* Find closest level to level_current */ |
0a3db1ce | 1272 | for (i = 2; i < device->brightness->count; i++) { |
63f0edfc AS |
1273 | l = device->brightness->levels[i]; |
1274 | if (abs(l - level_current) < abs(delta)) { | |
1275 | delta = l - level_current; | |
1276 | if (!delta) | |
1277 | break; | |
1278 | } | |
1279 | } | |
1280 | /* Ajust level_current to closest available level */ | |
1281 | level_current += delta; | |
0a3db1ce | 1282 | for (i = 2; i < device->brightness->count; i++) { |
f4715189 TT |
1283 | l = device->brightness->levels[i]; |
1284 | if (l < min) | |
1285 | min = l; | |
1286 | if (l > max) | |
1287 | max = l; | |
1288 | if (l < min_above && l > level_current) | |
1289 | min_above = l; | |
1290 | if (l > max_below && l < level_current) | |
1291 | max_below = l; | |
1292 | } | |
1293 | ||
1294 | switch (event) { | |
1295 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1296 | return (level_current < max) ? min_above : min; | |
1297 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1298 | return (level_current < max) ? min_above : max; | |
1299 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1300 | return (level_current > min) ? max_below : min; | |
1301 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1302 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1303 | return 0; | |
1304 | default: | |
1305 | return level_current; | |
1306 | } | |
1da177e4 LT |
1307 | } |
1308 | ||
c8890f90 | 1309 | static int |
4be44fcd | 1310 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 | 1311 | { |
27663c58 | 1312 | unsigned long long level_current, level_next; |
c8890f90 ZR |
1313 | int result = -EINVAL; |
1314 | ||
28c32e99 ZR |
1315 | /* no warning message if acpi_backlight=vendor is used */ |
1316 | if (!acpi_video_backlight_support()) | |
1317 | return 0; | |
1318 | ||
469778c1 | 1319 | if (!device->brightness) |
c8890f90 ZR |
1320 | goto out; |
1321 | ||
1322 | result = acpi_video_device_lcd_get_level_current(device, | |
70287db8 | 1323 | &level_current, 0); |
c8890f90 ZR |
1324 | if (result) |
1325 | goto out; | |
1326 | ||
1da177e4 | 1327 | level_next = acpi_video_get_next_level(device, level_current, event); |
c8890f90 | 1328 | |
24450c7a | 1329 | result = acpi_video_device_lcd_set_level(device, level_next); |
c8890f90 | 1330 | |
36342742 MG |
1331 | if (!result) |
1332 | backlight_force_update(device->backlight, | |
1333 | BACKLIGHT_UPDATE_HOTKEY); | |
1334 | ||
c8890f90 ZR |
1335 | out: |
1336 | if (result) | |
1337 | printk(KERN_ERR PREFIX "Failed to switch the brightness\n"); | |
1338 | ||
1339 | return result; | |
1da177e4 LT |
1340 | } |
1341 | ||
e92a7162 MG |
1342 | int acpi_video_get_edid(struct acpi_device *device, int type, int device_id, |
1343 | void **edid) | |
1344 | { | |
1345 | struct acpi_video_bus *video; | |
1346 | struct acpi_video_device *video_device; | |
1347 | union acpi_object *buffer = NULL; | |
1348 | acpi_status status; | |
1349 | int i, length; | |
1350 | ||
1351 | if (!device || !acpi_driver_data(device)) | |
1352 | return -EINVAL; | |
1353 | ||
1354 | video = acpi_driver_data(device); | |
1355 | ||
1356 | for (i = 0; i < video->attached_count; i++) { | |
1357 | video_device = video->attached_array[i].bind_info; | |
1358 | length = 256; | |
1359 | ||
1360 | if (!video_device) | |
1361 | continue; | |
1362 | ||
1363 | if (type) { | |
1364 | switch (type) { | |
1365 | case ACPI_VIDEO_DISPLAY_CRT: | |
1366 | if (!video_device->flags.crt) | |
1367 | continue; | |
1368 | break; | |
1369 | case ACPI_VIDEO_DISPLAY_TV: | |
1370 | if (!video_device->flags.tvout) | |
1371 | continue; | |
1372 | break; | |
1373 | case ACPI_VIDEO_DISPLAY_DVI: | |
1374 | if (!video_device->flags.dvi) | |
1375 | continue; | |
1376 | break; | |
1377 | case ACPI_VIDEO_DISPLAY_LCD: | |
1378 | if (!video_device->flags.lcd) | |
1379 | continue; | |
1380 | break; | |
1381 | } | |
1382 | } else if (video_device->device_id != device_id) { | |
1383 | continue; | |
1384 | } | |
1385 | ||
1386 | status = acpi_video_device_EDID(video_device, &buffer, length); | |
1387 | ||
1388 | if (ACPI_FAILURE(status) || !buffer || | |
1389 | buffer->type != ACPI_TYPE_BUFFER) { | |
1390 | length = 128; | |
1391 | status = acpi_video_device_EDID(video_device, &buffer, | |
1392 | length); | |
1393 | if (ACPI_FAILURE(status) || !buffer || | |
1394 | buffer->type != ACPI_TYPE_BUFFER) { | |
1395 | continue; | |
1396 | } | |
1397 | } | |
1398 | ||
1399 | *edid = buffer->buffer.pointer; | |
1400 | return length; | |
1401 | } | |
1402 | ||
1403 | return -ENODEV; | |
1404 | } | |
1405 | EXPORT_SYMBOL(acpi_video_get_edid); | |
1406 | ||
1da177e4 | 1407 | static int |
4be44fcd LB |
1408 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1409 | struct acpi_device *device) | |
1da177e4 | 1410 | { |
4be44fcd | 1411 | int status = 0; |
ff102ea9 | 1412 | struct acpi_device *dev; |
1da177e4 LT |
1413 | |
1414 | acpi_video_device_enumerate(video); | |
1415 | ||
ff102ea9 | 1416 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
1417 | |
1418 | status = acpi_video_bus_get_one_device(dev, video); | |
1419 | if (ACPI_FAILURE(status)) { | |
55ac9a01 | 1420 | printk(KERN_WARNING PREFIX |
cfa806f0 | 1421 | "Cant attach device\n"); |
1da177e4 LT |
1422 | continue; |
1423 | } | |
1da177e4 | 1424 | } |
d550d98d | 1425 | return status; |
1da177e4 LT |
1426 | } |
1427 | ||
4be44fcd | 1428 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1429 | { |
031ec77b | 1430 | acpi_status status; |
1da177e4 LT |
1431 | |
1432 | if (!device || !device->video) | |
d550d98d | 1433 | return -ENOENT; |
1da177e4 | 1434 | |
90130268 | 1435 | status = acpi_remove_notify_handler(device->dev->handle, |
4be44fcd LB |
1436 | ACPI_DEVICE_NOTIFY, |
1437 | acpi_video_device_notify); | |
cfa806f0 AK |
1438 | if (ACPI_FAILURE(status)) { |
1439 | printk(KERN_WARNING PREFIX | |
1440 | "Cant remove video notify handler\n"); | |
1441 | } | |
e29b3ee3 KP |
1442 | if (device->backlight) { |
1443 | sysfs_remove_link(&device->backlight->dev.kobj, "device"); | |
1444 | backlight_device_unregister(device->backlight); | |
1445 | device->backlight = NULL; | |
1446 | } | |
4a703a8f | 1447 | if (device->cooling_dev) { |
702ed512 ZR |
1448 | sysfs_remove_link(&device->dev->dev.kobj, |
1449 | "thermal_cooling"); | |
4a703a8f | 1450 | sysfs_remove_link(&device->cooling_dev->device.kobj, |
702ed512 | 1451 | "device"); |
4a703a8f DT |
1452 | thermal_cooling_device_unregister(device->cooling_dev); |
1453 | device->cooling_dev = NULL; | |
702ed512 | 1454 | } |
23b0f015 | 1455 | video_output_unregister(device->output_dev); |
ff102ea9 | 1456 | |
d550d98d | 1457 | return 0; |
1da177e4 LT |
1458 | } |
1459 | ||
4be44fcd | 1460 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1461 | { |
4be44fcd | 1462 | int status; |
ff102ea9 | 1463 | struct acpi_video_device *dev, *next; |
1da177e4 | 1464 | |
bbac81f5 | 1465 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1466 | |
ff102ea9 | 1467 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 1468 | |
ff102ea9 | 1469 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
1470 | if (ACPI_FAILURE(status)) |
1471 | printk(KERN_WARNING PREFIX | |
1472 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1473 | |
ff102ea9 DT |
1474 | if (dev->brightness) { |
1475 | kfree(dev->brightness->levels); | |
1476 | kfree(dev->brightness); | |
1477 | } | |
1478 | list_del(&dev->entry); | |
1479 | kfree(dev); | |
1da177e4 LT |
1480 | } |
1481 | ||
bbac81f5 | 1482 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1483 | |
d550d98d | 1484 | return 0; |
1da177e4 LT |
1485 | } |
1486 | ||
1487 | /* acpi_video interface */ | |
1488 | ||
4be44fcd | 1489 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 1490 | { |
a21101c4 | 1491 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
1492 | } |
1493 | ||
4be44fcd | 1494 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1495 | { |
1496 | return acpi_video_bus_DOS(video, 0, 1); | |
1497 | } | |
1498 | ||
7015558f | 1499 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event) |
1da177e4 | 1500 | { |
7015558f | 1501 | struct acpi_video_bus *video = acpi_driver_data(device); |
e9dab196 | 1502 | struct input_dev *input; |
17c452f9 | 1503 | int keycode = 0; |
e9dab196 | 1504 | |
1da177e4 | 1505 | if (!video) |
d550d98d | 1506 | return; |
1da177e4 | 1507 | |
e9dab196 | 1508 | input = video->input; |
1da177e4 LT |
1509 | |
1510 | switch (event) { | |
98fb8fe1 | 1511 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 1512 | * most likely via hotkey. */ |
14e04fb3 | 1513 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1514 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1515 | break; |
1516 | ||
98fb8fe1 | 1517 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1518 | * connector. */ |
1519 | acpi_video_device_enumerate(video); | |
1520 | acpi_video_device_rebind(video); | |
14e04fb3 | 1521 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1522 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1523 | break; |
1524 | ||
4be44fcd | 1525 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
25c87f7f | 1526 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1527 | keycode = KEY_SWITCHVIDEOMODE; |
1528 | break; | |
4be44fcd | 1529 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
25c87f7f | 1530 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1531 | keycode = KEY_VIDEO_NEXT; |
1532 | break; | |
4be44fcd | 1533 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
14e04fb3 | 1534 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1535 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
1536 | break; |
1537 | ||
1538 | default: | |
1539 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1540 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1541 | break; |
1542 | } | |
1543 | ||
7761f638 | 1544 | acpi_notifier_call_chain(device, event, 0); |
17c452f9 MG |
1545 | |
1546 | if (keycode) { | |
1547 | input_report_key(input, keycode, 1); | |
1548 | input_sync(input); | |
1549 | input_report_key(input, keycode, 0); | |
1550 | input_sync(input); | |
1551 | } | |
e9dab196 | 1552 | |
d550d98d | 1553 | return; |
1da177e4 LT |
1554 | } |
1555 | ||
4be44fcd | 1556 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1557 | { |
50dd0969 | 1558 | struct acpi_video_device *video_device = data; |
4be44fcd | 1559 | struct acpi_device *device = NULL; |
e9dab196 LY |
1560 | struct acpi_video_bus *bus; |
1561 | struct input_dev *input; | |
17c452f9 | 1562 | int keycode = 0; |
1da177e4 | 1563 | |
1da177e4 | 1564 | if (!video_device) |
d550d98d | 1565 | return; |
1da177e4 | 1566 | |
e6afa0de | 1567 | device = video_device->dev; |
e9dab196 LY |
1568 | bus = video_device->video; |
1569 | input = bus->input; | |
1da177e4 LT |
1570 | |
1571 | switch (event) { | |
4be44fcd | 1572 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
8a681a4d ZR |
1573 | if (brightness_switch_enabled) |
1574 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1575 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1576 | keycode = KEY_BRIGHTNESS_CYCLE; |
1577 | break; | |
4be44fcd | 1578 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
8a681a4d ZR |
1579 | if (brightness_switch_enabled) |
1580 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1581 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1582 | keycode = KEY_BRIGHTNESSUP; |
1583 | break; | |
4be44fcd | 1584 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
8a681a4d ZR |
1585 | if (brightness_switch_enabled) |
1586 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1587 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1588 | keycode = KEY_BRIGHTNESSDOWN; |
1589 | break; | |
4be44fcd | 1590 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
8a681a4d ZR |
1591 | if (brightness_switch_enabled) |
1592 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1593 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1594 | keycode = KEY_BRIGHTNESS_ZERO; |
1595 | break; | |
4be44fcd | 1596 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
8a681a4d ZR |
1597 | if (brightness_switch_enabled) |
1598 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1599 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1600 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
1601 | break; |
1602 | default: | |
1603 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1604 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1605 | break; |
1606 | } | |
e9dab196 | 1607 | |
7761f638 | 1608 | acpi_notifier_call_chain(device, event, 0); |
17c452f9 MG |
1609 | |
1610 | if (keycode) { | |
1611 | input_report_key(input, keycode, 1); | |
1612 | input_sync(input); | |
1613 | input_report_key(input, keycode, 0); | |
1614 | input_sync(input); | |
1615 | } | |
e9dab196 | 1616 | |
d550d98d | 1617 | return; |
1da177e4 LT |
1618 | } |
1619 | ||
ac7729da RW |
1620 | static int acpi_video_resume(struct notifier_block *nb, |
1621 | unsigned long val, void *ign) | |
863c1490 MG |
1622 | { |
1623 | struct acpi_video_bus *video; | |
1624 | struct acpi_video_device *video_device; | |
1625 | int i; | |
1626 | ||
ac7729da RW |
1627 | switch (val) { |
1628 | case PM_HIBERNATION_PREPARE: | |
1629 | case PM_SUSPEND_PREPARE: | |
1630 | case PM_RESTORE_PREPARE: | |
1631 | return NOTIFY_DONE; | |
1632 | } | |
863c1490 | 1633 | |
ac7729da RW |
1634 | video = container_of(nb, struct acpi_video_bus, pm_nb); |
1635 | ||
1636 | dev_info(&video->device->dev, "Restoring backlight state\n"); | |
863c1490 MG |
1637 | |
1638 | for (i = 0; i < video->attached_count; i++) { | |
1639 | video_device = video->attached_array[i].bind_info; | |
1640 | if (video_device && video_device->backlight) | |
1641 | acpi_video_set_brightness(video_device->backlight); | |
1642 | } | |
ac7729da RW |
1643 | |
1644 | return NOTIFY_OK; | |
863c1490 MG |
1645 | } |
1646 | ||
c504f8cb ZR |
1647 | static acpi_status |
1648 | acpi_video_bus_match(acpi_handle handle, u32 level, void *context, | |
1649 | void **return_value) | |
1650 | { | |
1651 | struct acpi_device *device = context; | |
1652 | struct acpi_device *sibling; | |
1653 | int result; | |
1654 | ||
1655 | if (handle == device->handle) | |
1656 | return AE_CTRL_TERMINATE; | |
1657 | ||
1658 | result = acpi_bus_get_device(handle, &sibling); | |
1659 | if (result) | |
1660 | return AE_OK; | |
1661 | ||
1662 | if (!strcmp(acpi_device_name(sibling), ACPI_VIDEO_BUS_NAME)) | |
1663 | return AE_ALREADY_EXISTS; | |
1664 | ||
1665 | return AE_OK; | |
1666 | } | |
1667 | ||
ac7729da RW |
1668 | static int instance; |
1669 | ||
4be44fcd | 1670 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1671 | { |
f51e8391 | 1672 | struct acpi_video_bus *video; |
e9dab196 | 1673 | struct input_dev *input; |
f51e8391 | 1674 | int error; |
c504f8cb ZR |
1675 | acpi_status status; |
1676 | ||
1677 | status = acpi_walk_namespace(ACPI_TYPE_DEVICE, | |
1678 | device->parent->handle, 1, | |
1679 | acpi_video_bus_match, NULL, | |
1680 | device, NULL); | |
1681 | if (status == AE_ALREADY_EXISTS) { | |
1682 | printk(KERN_WARNING FW_BUG | |
1683 | "Duplicate ACPI video bus devices for the" | |
1684 | " same VGA controller, please try module " | |
1685 | "parameter \"video.allow_duplicates=1\"" | |
1686 | "if the current driver doesn't work.\n"); | |
1687 | if (!allow_duplicates) | |
1688 | return -ENODEV; | |
1689 | } | |
1da177e4 | 1690 | |
36bcbec7 | 1691 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 1692 | if (!video) |
d550d98d | 1693 | return -ENOMEM; |
1da177e4 | 1694 | |
e6d9da1d ZR |
1695 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
1696 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
1697 | if (instance) | |
1698 | device->pnp.bus_id[3] = '0' + instance; | |
1699 | instance ++; | |
1700 | } | |
f3b39f13 ZY |
1701 | /* a hack to fix the duplicate name "VGA" problem on Pa 3553 */ |
1702 | if (!strcmp(device->pnp.bus_id, "VGA")) { | |
1703 | if (instance) | |
1704 | device->pnp.bus_id[3] = '0' + instance; | |
1705 | instance++; | |
1706 | } | |
e6d9da1d | 1707 | |
e6afa0de | 1708 | video->device = device; |
1da177e4 LT |
1709 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
1710 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 1711 | device->driver_data = video; |
1da177e4 LT |
1712 | |
1713 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
1714 | error = acpi_video_bus_check(video); |
1715 | if (error) | |
1716 | goto err_free_video; | |
1da177e4 | 1717 | |
bbac81f5 | 1718 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
1719 | INIT_LIST_HEAD(&video->video_device_list); |
1720 | ||
1721 | acpi_video_bus_get_devices(video, device); | |
1722 | acpi_video_bus_start_devices(video); | |
1723 | ||
e9dab196 | 1724 | video->input = input = input_allocate_device(); |
f51e8391 DT |
1725 | if (!input) { |
1726 | error = -ENOMEM; | |
7015558f | 1727 | goto err_stop_video; |
f51e8391 | 1728 | } |
e9dab196 LY |
1729 | |
1730 | snprintf(video->phys, sizeof(video->phys), | |
1731 | "%s/video/input0", acpi_device_hid(video->device)); | |
1732 | ||
1733 | input->name = acpi_device_name(video->device); | |
1734 | input->phys = video->phys; | |
1735 | input->id.bustype = BUS_HOST; | |
1736 | input->id.product = 0x06; | |
91c05c66 | 1737 | input->dev.parent = &device->dev; |
e9dab196 LY |
1738 | input->evbit[0] = BIT(EV_KEY); |
1739 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
1740 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
1741 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
1742 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
1743 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
1744 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
1745 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
1746 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
e9dab196 | 1747 | |
f51e8391 DT |
1748 | error = input_register_device(input); |
1749 | if (error) | |
1750 | goto err_free_input_dev; | |
e9dab196 | 1751 | |
1da177e4 | 1752 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
1753 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
1754 | video->flags.multihead ? "yes" : "no", | |
1755 | video->flags.rom ? "yes" : "no", | |
1756 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 1757 | |
ac7729da RW |
1758 | video->pm_nb.notifier_call = acpi_video_resume; |
1759 | video->pm_nb.priority = 0; | |
1760 | register_pm_notifier(&video->pm_nb); | |
1761 | ||
f51e8391 DT |
1762 | return 0; |
1763 | ||
1764 | err_free_input_dev: | |
1765 | input_free_device(input); | |
f51e8391 DT |
1766 | err_stop_video: |
1767 | acpi_video_bus_stop_devices(video); | |
1768 | acpi_video_bus_put_devices(video); | |
1769 | kfree(video->attached_array); | |
f51e8391 DT |
1770 | err_free_video: |
1771 | kfree(video); | |
db89b4f0 | 1772 | device->driver_data = NULL; |
1da177e4 | 1773 | |
f51e8391 | 1774 | return error; |
1da177e4 LT |
1775 | } |
1776 | ||
4be44fcd | 1777 | static int acpi_video_bus_remove(struct acpi_device *device, int type) |
1da177e4 | 1778 | { |
4be44fcd | 1779 | struct acpi_video_bus *video = NULL; |
1da177e4 | 1780 | |
1da177e4 LT |
1781 | |
1782 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 1783 | return -EINVAL; |
1da177e4 | 1784 | |
50dd0969 | 1785 | video = acpi_driver_data(device); |
1da177e4 | 1786 | |
ac7729da RW |
1787 | unregister_pm_notifier(&video->pm_nb); |
1788 | ||
1da177e4 | 1789 | acpi_video_bus_stop_devices(video); |
1da177e4 | 1790 | acpi_video_bus_put_devices(video); |
1da177e4 | 1791 | |
e9dab196 | 1792 | input_unregister_device(video->input); |
6044ec88 | 1793 | kfree(video->attached_array); |
1da177e4 LT |
1794 | kfree(video); |
1795 | ||
d550d98d | 1796 | return 0; |
1da177e4 LT |
1797 | } |
1798 | ||
74a365b3 MG |
1799 | static int __init intel_opregion_present(void) |
1800 | { | |
1801 | #if defined(CONFIG_DRM_I915) || defined(CONFIG_DRM_I915_MODULE) | |
1802 | struct pci_dev *dev = NULL; | |
1803 | u32 address; | |
1804 | ||
1805 | for_each_pci_dev(dev) { | |
1806 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
1807 | continue; | |
1808 | if (dev->vendor != PCI_VENDOR_ID_INTEL) | |
1809 | continue; | |
1810 | pci_read_config_dword(dev, 0xfc, &address); | |
1811 | if (!address) | |
1812 | continue; | |
1813 | return 1; | |
1814 | } | |
1815 | #endif | |
1816 | return 0; | |
1817 | } | |
1818 | ||
1819 | int acpi_video_register(void) | |
1da177e4 | 1820 | { |
4be44fcd | 1821 | int result = 0; |
86e437f0 ZY |
1822 | if (register_count) { |
1823 | /* | |
1824 | * if the function of acpi_video_register is already called, | |
1825 | * don't register the acpi_vide_bus again and return no error. | |
1826 | */ | |
1827 | return 0; | |
1828 | } | |
1da177e4 | 1829 | |
1da177e4 | 1830 | result = acpi_bus_register_driver(&acpi_video_bus); |
39fe394d | 1831 | if (result < 0) |
d550d98d | 1832 | return -ENODEV; |
1da177e4 | 1833 | |
86e437f0 ZY |
1834 | /* |
1835 | * When the acpi_video_bus is loaded successfully, increase | |
1836 | * the counter reference. | |
1837 | */ | |
1838 | register_count = 1; | |
1839 | ||
d550d98d | 1840 | return 0; |
1da177e4 | 1841 | } |
74a365b3 MG |
1842 | EXPORT_SYMBOL(acpi_video_register); |
1843 | ||
86e437f0 ZY |
1844 | void acpi_video_unregister(void) |
1845 | { | |
1846 | if (!register_count) { | |
1847 | /* | |
1848 | * If the acpi video bus is already unloaded, don't | |
1849 | * unload it again and return directly. | |
1850 | */ | |
1851 | return; | |
1852 | } | |
1853 | acpi_bus_unregister_driver(&acpi_video_bus); | |
1854 | ||
86e437f0 ZY |
1855 | register_count = 0; |
1856 | ||
1857 | return; | |
1858 | } | |
1859 | EXPORT_SYMBOL(acpi_video_unregister); | |
1860 | ||
74a365b3 MG |
1861 | /* |
1862 | * This is kind of nasty. Hardware using Intel chipsets may require | |
1863 | * the video opregion code to be run first in order to initialise | |
1864 | * state before any ACPI video calls are made. To handle this we defer | |
1865 | * registration of the video class until the opregion code has run. | |
1866 | */ | |
1867 | ||
1868 | static int __init acpi_video_init(void) | |
1869 | { | |
45cb50e6 ZR |
1870 | dmi_check_system(video_dmi_table); |
1871 | ||
74a365b3 MG |
1872 | if (intel_opregion_present()) |
1873 | return 0; | |
1874 | ||
1875 | return acpi_video_register(); | |
1876 | } | |
1da177e4 | 1877 | |
86e437f0 | 1878 | static void __exit acpi_video_exit(void) |
1da177e4 | 1879 | { |
86e437f0 | 1880 | acpi_video_unregister(); |
1da177e4 | 1881 | |
d550d98d | 1882 | return; |
1da177e4 LT |
1883 | } |
1884 | ||
1885 | module_init(acpi_video_init); | |
1886 | module_exit(acpi_video_exit); |