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