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 LT |
49 | #define ACPI_VIDEO_BUS_NAME "Video Bus" |
50 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" | |
51 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 | |
52 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 | |
53 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 | |
54 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 | |
55 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 | |
56 | ||
f4715189 TT |
57 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85 |
58 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 | |
59 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 | |
60 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88 | |
61 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89 | |
1da177e4 | 62 | |
2f3d000a | 63 | #define MAX_NAME_LEN 20 |
1da177e4 | 64 | |
1da177e4 | 65 | #define _COMPONENT ACPI_VIDEO_COMPONENT |
f52fd66d | 66 | ACPI_MODULE_NAME("video"); |
1da177e4 | 67 | |
f52fd66d | 68 | MODULE_AUTHOR("Bruno Ducrot"); |
7cda93e0 | 69 | MODULE_DESCRIPTION("ACPI Video Driver"); |
1da177e4 LT |
70 | MODULE_LICENSE("GPL"); |
71 | ||
90ab5ee9 | 72 | static bool brightness_switch_enabled = 1; |
8a681a4d ZR |
73 | module_param(brightness_switch_enabled, bool, 0644); |
74 | ||
c504f8cb ZR |
75 | /* |
76 | * By default, we don't allow duplicate ACPI video bus devices | |
77 | * under the same VGA controller | |
78 | */ | |
90ab5ee9 | 79 | static bool allow_duplicates; |
c504f8cb ZR |
80 | module_param(allow_duplicates, bool, 0644); |
81 | ||
99fd1895 ZR |
82 | /* |
83 | * Some BIOSes claim they use minimum backlight at boot, | |
84 | * and this may bring dimming screen after boot | |
85 | */ | |
90ab5ee9 | 86 | static bool use_bios_initial_backlight = 1; |
99fd1895 ZR |
87 | module_param(use_bios_initial_backlight, bool, 0644); |
88 | ||
86e437f0 | 89 | static int register_count = 0; |
4be44fcd | 90 | static int acpi_video_bus_add(struct acpi_device *device); |
51fac838 | 91 | static int acpi_video_bus_remove(struct acpi_device *device); |
7015558f | 92 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event); |
1da177e4 | 93 | |
1ba90e3a TR |
94 | static const struct acpi_device_id video_device_ids[] = { |
95 | {ACPI_VIDEO_HID, 0}, | |
96 | {"", 0}, | |
97 | }; | |
98 | MODULE_DEVICE_TABLE(acpi, video_device_ids); | |
99 | ||
1da177e4 | 100 | static struct acpi_driver acpi_video_bus = { |
c2b6705b | 101 | .name = "video", |
1da177e4 | 102 | .class = ACPI_VIDEO_CLASS, |
1ba90e3a | 103 | .ids = video_device_ids, |
1da177e4 LT |
104 | .ops = { |
105 | .add = acpi_video_bus_add, | |
106 | .remove = acpi_video_bus_remove, | |
7015558f | 107 | .notify = acpi_video_bus_notify, |
4be44fcd | 108 | }, |
1da177e4 LT |
109 | }; |
110 | ||
111 | struct acpi_video_bus_flags { | |
4be44fcd LB |
112 | u8 multihead:1; /* can switch video heads */ |
113 | u8 rom:1; /* can retrieve a video rom */ | |
114 | u8 post:1; /* can configure the head to */ | |
115 | u8 reserved:5; | |
1da177e4 LT |
116 | }; |
117 | ||
118 | struct acpi_video_bus_cap { | |
4be44fcd LB |
119 | u8 _DOS:1; /*Enable/Disable output switching */ |
120 | u8 _DOD:1; /*Enumerate all devices attached to display adapter */ | |
121 | u8 _ROM:1; /*Get ROM Data */ | |
122 | u8 _GPD:1; /*Get POST Device */ | |
123 | u8 _SPD:1; /*Set POST Device */ | |
124 | u8 _VPO:1; /*Video POST Options */ | |
125 | u8 reserved:2; | |
1da177e4 LT |
126 | }; |
127 | ||
4be44fcd LB |
128 | struct acpi_video_device_attrib { |
129 | u32 display_index:4; /* A zero-based instance of the Display */ | |
98fb8fe1 | 130 | u32 display_port_attachment:4; /*This field differentiates the display type */ |
4be44fcd | 131 | u32 display_type:4; /*Describe the specific type in use */ |
98fb8fe1 | 132 | u32 vendor_specific:4; /*Chipset Vendor Specific */ |
4be44fcd LB |
133 | u32 bios_can_detect:1; /*BIOS can detect the device */ |
134 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to | |
135 | the VGA device. */ | |
136 | u32 pipe_id:3; /*For VGA multiple-head devices. */ | |
137 | u32 reserved:10; /*Must be 0 */ | |
138 | u32 device_id_scheme:1; /*Device ID Scheme */ | |
1da177e4 LT |
139 | }; |
140 | ||
141 | struct acpi_video_enumerated_device { | |
142 | union { | |
143 | u32 int_val; | |
4be44fcd | 144 | struct acpi_video_device_attrib attrib; |
1da177e4 LT |
145 | } value; |
146 | struct acpi_video_device *bind_info; | |
147 | }; | |
148 | ||
149 | struct acpi_video_bus { | |
e6afa0de | 150 | struct acpi_device *device; |
4be44fcd | 151 | u8 dos_setting; |
1da177e4 | 152 | struct acpi_video_enumerated_device *attached_array; |
4be44fcd LB |
153 | u8 attached_count; |
154 | struct acpi_video_bus_cap cap; | |
1da177e4 | 155 | struct acpi_video_bus_flags flags; |
4be44fcd | 156 | struct list_head video_device_list; |
bbac81f5 | 157 | struct mutex device_list_lock; /* protects video_device_list */ |
e9dab196 LY |
158 | struct input_dev *input; |
159 | char phys[32]; /* for input device */ | |
ac7729da | 160 | struct notifier_block pm_nb; |
1da177e4 LT |
161 | }; |
162 | ||
163 | struct acpi_video_device_flags { | |
4be44fcd LB |
164 | u8 crt:1; |
165 | u8 lcd:1; | |
166 | u8 tvout:1; | |
82cae999 | 167 | u8 dvi:1; |
4be44fcd LB |
168 | u8 bios:1; |
169 | u8 unknown:1; | |
91e13aa3 AL |
170 | u8 notify:1; |
171 | u8 reserved:1; | |
1da177e4 LT |
172 | }; |
173 | ||
174 | struct acpi_video_device_cap { | |
4be44fcd LB |
175 | u8 _ADR:1; /*Return the unique ID */ |
176 | u8 _BCL:1; /*Query list of brightness control levels supported */ | |
177 | u8 _BCM:1; /*Set the brightness level */ | |
2f3d000a | 178 | u8 _BQC:1; /* Get current brightness level */ |
c60d638e | 179 | u8 _BCQ:1; /* Some buggy BIOS uses _BCQ instead of _BQC */ |
4be44fcd | 180 | u8 _DDC:1; /*Return the EDID for this device */ |
1da177e4 LT |
181 | }; |
182 | ||
d32f6947 ZR |
183 | struct acpi_video_brightness_flags { |
184 | u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */ | |
d80fb99f | 185 | u8 _BCL_reversed:1; /* _BCL package is in a reversed order*/ |
1a7c618a ZR |
186 | u8 _BCL_use_index:1; /* levels in _BCL are index values */ |
187 | u8 _BCM_use_index:1; /* input of _BCM is an index value */ | |
188 | u8 _BQC_use_index:1; /* _BQC returns an index value */ | |
d32f6947 ZR |
189 | }; |
190 | ||
1da177e4 | 191 | struct acpi_video_device_brightness { |
4be44fcd LB |
192 | int curr; |
193 | int count; | |
194 | int *levels; | |
d32f6947 | 195 | struct acpi_video_brightness_flags flags; |
1da177e4 LT |
196 | }; |
197 | ||
198 | struct acpi_video_device { | |
4be44fcd LB |
199 | unsigned long device_id; |
200 | struct acpi_video_device_flags flags; | |
201 | struct acpi_video_device_cap cap; | |
202 | struct list_head entry; | |
203 | struct acpi_video_bus *video; | |
204 | struct acpi_device *dev; | |
1da177e4 | 205 | struct acpi_video_device_brightness *brightness; |
2f3d000a | 206 | struct backlight_device *backlight; |
4a703a8f | 207 | struct thermal_cooling_device *cooling_dev; |
1da177e4 LT |
208 | }; |
209 | ||
b7171ae7 | 210 | static const char device_decode[][30] = { |
1da177e4 LT |
211 | "motherboard VGA device", |
212 | "PCI VGA device", | |
213 | "AGP VGA device", | |
214 | "UNKNOWN", | |
215 | }; | |
216 | ||
4be44fcd LB |
217 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data); |
218 | static void acpi_video_device_rebind(struct acpi_video_bus *video); | |
219 | static void acpi_video_device_bind(struct acpi_video_bus *video, | |
220 | struct acpi_video_device *device); | |
1da177e4 | 221 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
2f3d000a YL |
222 | static int acpi_video_device_lcd_set_level(struct acpi_video_device *device, |
223 | int level); | |
224 | static int acpi_video_device_lcd_get_level_current( | |
225 | struct acpi_video_device *device, | |
a89803df | 226 | unsigned long long *level, bool raw); |
4be44fcd LB |
227 | static int acpi_video_get_next_level(struct acpi_video_device *device, |
228 | u32 level_current, u32 event); | |
c8890f90 | 229 | static int acpi_video_switch_brightness(struct acpi_video_device *device, |
4be44fcd | 230 | int event); |
1da177e4 | 231 | |
2f3d000a YL |
232 | /*backlight device sysfs support*/ |
233 | static int acpi_video_get_brightness(struct backlight_device *bd) | |
234 | { | |
27663c58 | 235 | unsigned long long cur_level; |
38531e6f | 236 | int i; |
2f3d000a | 237 | struct acpi_video_device *vd = |
655bfd7a | 238 | (struct acpi_video_device *)bl_get_data(bd); |
c8890f90 | 239 | |
a89803df | 240 | if (acpi_video_device_lcd_get_level_current(vd, &cur_level, false)) |
c8890f90 | 241 | return -EINVAL; |
38531e6f MG |
242 | for (i = 2; i < vd->brightness->count; i++) { |
243 | if (vd->brightness->levels[i] == cur_level) | |
244 | /* The first two entries are special - see page 575 | |
245 | of the ACPI spec 3.0 */ | |
246 | return i-2; | |
247 | } | |
248 | return 0; | |
2f3d000a YL |
249 | } |
250 | ||
251 | static int acpi_video_set_brightness(struct backlight_device *bd) | |
252 | { | |
24450c7a | 253 | int request_level = bd->props.brightness + 2; |
2f3d000a | 254 | struct acpi_video_device *vd = |
655bfd7a | 255 | (struct acpi_video_device *)bl_get_data(bd); |
24450c7a ZR |
256 | |
257 | return acpi_video_device_lcd_set_level(vd, | |
258 | vd->brightness->levels[request_level]); | |
2f3d000a YL |
259 | } |
260 | ||
acc2472e | 261 | static const struct backlight_ops acpi_backlight_ops = { |
599a52d1 RP |
262 | .get_brightness = acpi_video_get_brightness, |
263 | .update_status = acpi_video_set_brightness, | |
264 | }; | |
265 | ||
702ed512 | 266 | /* thermal cooling device callbacks */ |
4a703a8f | 267 | static int video_get_max_state(struct thermal_cooling_device *cooling_dev, unsigned |
6503e5df | 268 | long *state) |
702ed512 | 269 | { |
4a703a8f | 270 | struct acpi_device *device = cooling_dev->devdata; |
702ed512 ZR |
271 | struct acpi_video_device *video = acpi_driver_data(device); |
272 | ||
6503e5df MG |
273 | *state = video->brightness->count - 3; |
274 | return 0; | |
702ed512 ZR |
275 | } |
276 | ||
4a703a8f | 277 | static int video_get_cur_state(struct thermal_cooling_device *cooling_dev, unsigned |
6503e5df | 278 | long *state) |
702ed512 | 279 | { |
4a703a8f | 280 | struct acpi_device *device = cooling_dev->devdata; |
702ed512 | 281 | struct acpi_video_device *video = acpi_driver_data(device); |
27663c58 | 282 | unsigned long long level; |
6503e5df | 283 | int offset; |
702ed512 | 284 | |
a89803df | 285 | if (acpi_video_device_lcd_get_level_current(video, &level, false)) |
c8890f90 | 286 | return -EINVAL; |
6503e5df MG |
287 | for (offset = 2; offset < video->brightness->count; offset++) |
288 | if (level == video->brightness->levels[offset]) { | |
289 | *state = video->brightness->count - offset - 1; | |
290 | return 0; | |
291 | } | |
702ed512 ZR |
292 | |
293 | return -EINVAL; | |
294 | } | |
295 | ||
296 | static int | |
4a703a8f | 297 | video_set_cur_state(struct thermal_cooling_device *cooling_dev, unsigned long state) |
702ed512 | 298 | { |
4a703a8f | 299 | struct acpi_device *device = cooling_dev->devdata; |
702ed512 ZR |
300 | struct acpi_video_device *video = acpi_driver_data(device); |
301 | int level; | |
302 | ||
303 | if ( state >= video->brightness->count - 2) | |
304 | return -EINVAL; | |
305 | ||
306 | state = video->brightness->count - state; | |
307 | level = video->brightness->levels[state -1]; | |
308 | return acpi_video_device_lcd_set_level(video, level); | |
309 | } | |
310 | ||
9c8b04be | 311 | static const struct thermal_cooling_device_ops video_cooling_ops = { |
702ed512 ZR |
312 | .get_max_state = video_get_max_state, |
313 | .get_cur_state = video_get_cur_state, | |
314 | .set_cur_state = video_set_cur_state, | |
315 | }; | |
316 | ||
1da177e4 LT |
317 | /* -------------------------------------------------------------------------- |
318 | Video Management | |
319 | -------------------------------------------------------------------------- */ | |
320 | ||
1da177e4 | 321 | static int |
4be44fcd LB |
322 | acpi_video_device_lcd_query_levels(struct acpi_video_device *device, |
323 | union acpi_object **levels) | |
1da177e4 | 324 | { |
4be44fcd LB |
325 | int status; |
326 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
327 | union acpi_object *obj; | |
1da177e4 | 328 | |
1da177e4 LT |
329 | |
330 | *levels = NULL; | |
331 | ||
90130268 | 332 | status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer); |
1da177e4 | 333 | if (!ACPI_SUCCESS(status)) |
d550d98d | 334 | return status; |
4be44fcd | 335 | obj = (union acpi_object *)buffer.pointer; |
6665bda7 | 336 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
6468463a | 337 | printk(KERN_ERR PREFIX "Invalid _BCL data\n"); |
1da177e4 LT |
338 | status = -EFAULT; |
339 | goto err; | |
340 | } | |
341 | ||
342 | *levels = obj; | |
343 | ||
d550d98d | 344 | return 0; |
1da177e4 | 345 | |
4be44fcd | 346 | err: |
6044ec88 | 347 | kfree(buffer.pointer); |
1da177e4 | 348 | |
d550d98d | 349 | return status; |
1da177e4 LT |
350 | } |
351 | ||
352 | static int | |
4be44fcd | 353 | acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) |
1da177e4 | 354 | { |
24450c7a | 355 | int status; |
4be44fcd LB |
356 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
357 | struct acpi_object_list args = { 1, &arg0 }; | |
9e6dada9 | 358 | int state; |
1da177e4 | 359 | |
1da177e4 | 360 | arg0.integer.value = level; |
1da177e4 | 361 | |
24450c7a ZR |
362 | status = acpi_evaluate_object(device->dev->handle, "_BCM", |
363 | &args, NULL); | |
364 | if (ACPI_FAILURE(status)) { | |
365 | ACPI_ERROR((AE_INFO, "Evaluating _BCM failed")); | |
366 | return -EIO; | |
367 | } | |
368 | ||
4500ca8e | 369 | device->brightness->curr = level; |
9e6dada9 | 370 | for (state = 2; state < device->brightness->count; state++) |
24450c7a | 371 | if (level == device->brightness->levels[state]) { |
1a7c618a ZR |
372 | if (device->backlight) |
373 | device->backlight->props.brightness = state - 2; | |
24450c7a ZR |
374 | return 0; |
375 | } | |
9e6dada9 | 376 | |
24450c7a ZR |
377 | ACPI_ERROR((AE_INFO, "Current brightness invalid")); |
378 | return -EINVAL; | |
1da177e4 LT |
379 | } |
380 | ||
45cb50e6 ZR |
381 | /* |
382 | * For some buggy _BQC methods, we need to add a constant value to | |
383 | * the _BQC return value to get the actual current brightness level | |
384 | */ | |
385 | ||
386 | static int bqc_offset_aml_bug_workaround; | |
387 | static int __init video_set_bqc_offset(const struct dmi_system_id *d) | |
388 | { | |
389 | bqc_offset_aml_bug_workaround = 9; | |
390 | return 0; | |
391 | } | |
392 | ||
129ff8f8 ZR |
393 | static int video_ignore_initial_backlight(const struct dmi_system_id *d) |
394 | { | |
395 | use_bios_initial_backlight = 0; | |
396 | return 0; | |
397 | } | |
398 | ||
45cb50e6 ZR |
399 | static struct dmi_system_id video_dmi_table[] __initdata = { |
400 | /* | |
401 | * Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121 | |
402 | */ | |
403 | { | |
404 | .callback = video_set_bqc_offset, | |
405 | .ident = "Acer Aspire 5720", | |
406 | .matches = { | |
407 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
408 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"), | |
409 | }, | |
410 | }, | |
5afc4abe LB |
411 | { |
412 | .callback = video_set_bqc_offset, | |
413 | .ident = "Acer Aspire 5710Z", | |
414 | .matches = { | |
415 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
416 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710Z"), | |
417 | }, | |
418 | }, | |
34ac272b ZR |
419 | { |
420 | .callback = video_set_bqc_offset, | |
421 | .ident = "eMachines E510", | |
422 | .matches = { | |
423 | DMI_MATCH(DMI_BOARD_VENDOR, "EMACHINES"), | |
424 | DMI_MATCH(DMI_PRODUCT_NAME, "eMachines E510"), | |
425 | }, | |
426 | }, | |
93bcece2 ZR |
427 | { |
428 | .callback = video_set_bqc_offset, | |
429 | .ident = "Acer Aspire 5315", | |
430 | .matches = { | |
431 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
432 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"), | |
433 | }, | |
434 | }, | |
152a4e63 ZR |
435 | { |
436 | .callback = video_set_bqc_offset, | |
437 | .ident = "Acer Aspire 7720", | |
438 | .matches = { | |
439 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), | |
440 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"), | |
441 | }, | |
442 | }, | |
129ff8f8 ZR |
443 | { |
444 | .callback = video_ignore_initial_backlight, | |
445 | .ident = "HP Folio 13-2000", | |
446 | .matches = { | |
447 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | |
448 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"), | |
449 | }, | |
450 | }, | |
f0351947 LT |
451 | { |
452 | .callback = video_ignore_initial_backlight, | |
453 | .ident = "Fujitsu E753", | |
454 | .matches = { | |
455 | DMI_MATCH(DMI_BOARD_VENDOR, "FUJITSU"), | |
456 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E753"), | |
457 | }, | |
458 | }, | |
771d09b3 GMDV |
459 | { |
460 | .callback = video_ignore_initial_backlight, | |
461 | .ident = "HP Pavilion dm4", | |
462 | .matches = { | |
463 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | |
464 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dm4 Notebook PC"), | |
465 | }, | |
466 | }, | |
780a6ec6 AW |
467 | { |
468 | .callback = video_ignore_initial_backlight, | |
469 | .ident = "HP Pavilion g6 Notebook PC", | |
470 | .matches = { | |
471 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | |
472 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion g6 Notebook PC"), | |
473 | }, | |
474 | }, | |
4ef366c5 AH |
475 | { |
476 | .callback = video_ignore_initial_backlight, | |
477 | .ident = "HP 1000 Notebook PC", | |
478 | .matches = { | |
479 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | |
480 | DMI_MATCH(DMI_PRODUCT_NAME, "HP 1000 Notebook PC"), | |
481 | }, | |
482 | }, | |
fedbe9bc AH |
483 | { |
484 | .callback = video_ignore_initial_backlight, | |
485 | .ident = "HP Pavilion m4", | |
486 | .matches = { | |
487 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | |
488 | DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion m4 Notebook PC"), | |
489 | }, | |
490 | }, | |
45cb50e6 ZR |
491 | {} |
492 | }; | |
493 | ||
994fa63c DB |
494 | static unsigned long long |
495 | acpi_video_bqc_value_to_level(struct acpi_video_device *device, | |
496 | unsigned long long bqc_value) | |
497 | { | |
498 | unsigned long long level; | |
499 | ||
500 | if (device->brightness->flags._BQC_use_index) { | |
501 | /* | |
502 | * _BQC returns an index that doesn't account for | |
503 | * the first 2 items with special meaning, so we need | |
504 | * to compensate for that by offsetting ourselves | |
505 | */ | |
506 | if (device->brightness->flags._BCL_reversed) | |
507 | bqc_value = device->brightness->count - 3 - bqc_value; | |
508 | ||
509 | level = device->brightness->levels[bqc_value + 2]; | |
510 | } else { | |
511 | level = bqc_value; | |
512 | } | |
513 | ||
514 | level += bqc_offset_aml_bug_workaround; | |
515 | ||
516 | return level; | |
517 | } | |
518 | ||
1da177e4 | 519 | static int |
4be44fcd | 520 | acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, |
a89803df | 521 | unsigned long long *level, bool raw) |
1da177e4 | 522 | { |
c8890f90 | 523 | acpi_status status = AE_OK; |
4e231fa4 | 524 | int i; |
c8890f90 | 525 | |
c60d638e ZR |
526 | if (device->cap._BQC || device->cap._BCQ) { |
527 | char *buf = device->cap._BQC ? "_BQC" : "_BCQ"; | |
528 | ||
529 | status = acpi_evaluate_integer(device->dev->handle, buf, | |
c8890f90 ZR |
530 | NULL, level); |
531 | if (ACPI_SUCCESS(status)) { | |
a89803df DB |
532 | if (raw) { |
533 | /* | |
534 | * Caller has indicated he wants the raw | |
535 | * value returned by _BQC, so don't furtherly | |
536 | * mess with the value. | |
537 | */ | |
538 | return 0; | |
539 | } | |
540 | ||
994fa63c | 541 | *level = acpi_video_bqc_value_to_level(device, *level); |
1a7c618a | 542 | |
4e231fa4 VS |
543 | for (i = 2; i < device->brightness->count; i++) |
544 | if (device->brightness->levels[i] == *level) { | |
545 | device->brightness->curr = *level; | |
546 | return 0; | |
547 | } | |
a89803df DB |
548 | /* |
549 | * BQC returned an invalid level. | |
550 | * Stop using it. | |
551 | */ | |
552 | ACPI_WARNING((AE_INFO, | |
553 | "%s returned an invalid level", | |
554 | buf)); | |
555 | device->cap._BQC = device->cap._BCQ = 0; | |
c8890f90 ZR |
556 | } else { |
557 | /* Fixme: | |
558 | * should we return an error or ignore this failure? | |
559 | * dev->brightness->curr is a cached value which stores | |
560 | * the correct current backlight level in most cases. | |
561 | * ACPI video backlight still works w/ buggy _BQC. | |
562 | * http://bugzilla.kernel.org/show_bug.cgi?id=12233 | |
563 | */ | |
c60d638e ZR |
564 | ACPI_WARNING((AE_INFO, "Evaluating %s failed", buf)); |
565 | device->cap._BQC = device->cap._BCQ = 0; | |
c8890f90 ZR |
566 | } |
567 | } | |
568 | ||
4500ca8e | 569 | *level = device->brightness->curr; |
c8890f90 | 570 | return 0; |
1da177e4 LT |
571 | } |
572 | ||
573 | static int | |
4be44fcd LB |
574 | acpi_video_device_EDID(struct acpi_video_device *device, |
575 | union acpi_object **edid, ssize_t length) | |
1da177e4 | 576 | { |
4be44fcd LB |
577 | int status; |
578 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
579 | union acpi_object *obj; | |
580 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
581 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 582 | |
1da177e4 LT |
583 | |
584 | *edid = NULL; | |
585 | ||
586 | if (!device) | |
d550d98d | 587 | return -ENODEV; |
1da177e4 LT |
588 | if (length == 128) |
589 | arg0.integer.value = 1; | |
590 | else if (length == 256) | |
591 | arg0.integer.value = 2; | |
592 | else | |
d550d98d | 593 | return -EINVAL; |
1da177e4 | 594 | |
90130268 | 595 | status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer); |
1da177e4 | 596 | if (ACPI_FAILURE(status)) |
d550d98d | 597 | return -ENODEV; |
1da177e4 | 598 | |
50dd0969 | 599 | obj = buffer.pointer; |
1da177e4 LT |
600 | |
601 | if (obj && obj->type == ACPI_TYPE_BUFFER) | |
602 | *edid = obj; | |
603 | else { | |
6468463a | 604 | printk(KERN_ERR PREFIX "Invalid _DDC data\n"); |
1da177e4 LT |
605 | status = -EFAULT; |
606 | kfree(obj); | |
607 | } | |
608 | ||
d550d98d | 609 | return status; |
1da177e4 LT |
610 | } |
611 | ||
1da177e4 LT |
612 | /* bus */ |
613 | ||
1da177e4 LT |
614 | /* |
615 | * Arg: | |
616 | * video : video bus device pointer | |
617 | * bios_flag : | |
618 | * 0. The system BIOS should NOT automatically switch(toggle) | |
619 | * the active display output. | |
620 | * 1. The system BIOS should automatically switch (toggle) the | |
98fb8fe1 | 621 | * active display output. No switch event. |
1da177e4 LT |
622 | * 2. The _DGS value should be locked. |
623 | * 3. The system BIOS should not automatically switch (toggle) the | |
624 | * active display output, but instead generate the display switch | |
625 | * event notify code. | |
626 | * lcd_flag : | |
627 | * 0. The system BIOS should automatically control the brightness level | |
98fb8fe1 | 628 | * of the LCD when the power changes from AC to DC |
1da177e4 | 629 | * 1. The system BIOS should NOT automatically control the brightness |
98fb8fe1 | 630 | * level of the LCD when the power changes from AC to DC. |
1da177e4 | 631 | * Return Value: |
ea9f8856 | 632 | * -EINVAL wrong arg. |
1da177e4 LT |
633 | */ |
634 | ||
635 | static int | |
4be44fcd | 636 | acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) |
1da177e4 | 637 | { |
ea9f8856 | 638 | acpi_status status; |
4be44fcd LB |
639 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
640 | struct acpi_object_list args = { 1, &arg0 }; | |
1da177e4 | 641 | |
b0373843 ZR |
642 | if (!video->cap._DOS) |
643 | return 0; | |
1da177e4 | 644 | |
ea9f8856 IM |
645 | if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) |
646 | return -EINVAL; | |
1da177e4 LT |
647 | arg0.integer.value = (lcd_flag << 2) | bios_flag; |
648 | video->dos_setting = arg0.integer.value; | |
ea9f8856 IM |
649 | status = acpi_evaluate_object(video->device->handle, "_DOS", |
650 | &args, NULL); | |
651 | if (ACPI_FAILURE(status)) | |
652 | return -EIO; | |
1da177e4 | 653 | |
ea9f8856 | 654 | return 0; |
1da177e4 LT |
655 | } |
656 | ||
935e5f29 ZR |
657 | /* |
658 | * Simple comparison function used to sort backlight levels. | |
659 | */ | |
660 | ||
661 | static int | |
662 | acpi_video_cmp_level(const void *a, const void *b) | |
663 | { | |
664 | return *(int *)a - *(int *)b; | |
665 | } | |
666 | ||
a50188da AL |
667 | /* |
668 | * Decides if _BQC/_BCQ for this system is usable | |
669 | * | |
670 | * We do this by changing the level first and then read out the current | |
671 | * brightness level, if the value does not match, find out if it is using | |
672 | * index. If not, clear the _BQC/_BCQ capability. | |
673 | */ | |
674 | static int acpi_video_bqc_quirk(struct acpi_video_device *device, | |
675 | int max_level, int current_level) | |
676 | { | |
677 | struct acpi_video_device_brightness *br = device->brightness; | |
678 | int result; | |
679 | unsigned long long level; | |
680 | int test_level; | |
681 | ||
682 | /* don't mess with existing known broken systems */ | |
683 | if (bqc_offset_aml_bug_workaround) | |
684 | return 0; | |
685 | ||
686 | /* | |
687 | * Some systems always report current brightness level as maximum | |
688 | * through _BQC, we need to test another value for them. | |
689 | */ | |
690 | test_level = current_level == max_level ? br->levels[2] : max_level; | |
691 | ||
692 | result = acpi_video_device_lcd_set_level(device, test_level); | |
693 | if (result) | |
694 | return result; | |
695 | ||
696 | result = acpi_video_device_lcd_get_level_current(device, &level, true); | |
697 | if (result) | |
698 | return result; | |
699 | ||
700 | if (level != test_level) { | |
701 | /* buggy _BQC found, need to find out if it uses index */ | |
702 | if (level < br->count) { | |
703 | if (br->flags._BCL_reversed) | |
704 | level = br->count - 3 - level; | |
705 | if (br->levels[level + 2] == test_level) | |
706 | br->flags._BQC_use_index = 1; | |
707 | } | |
708 | ||
709 | if (!br->flags._BQC_use_index) | |
710 | device->cap._BQC = device->cap._BCQ = 0; | |
711 | } | |
712 | ||
713 | return 0; | |
714 | } | |
715 | ||
716 | ||
1da177e4 LT |
717 | /* |
718 | * Arg: | |
719 | * device : video output device (LCD, CRT, ..) | |
720 | * | |
721 | * Return Value: | |
469778c1 JJ |
722 | * Maximum brightness level |
723 | * | |
724 | * Allocate and initialize device->brightness. | |
725 | */ | |
726 | ||
727 | static int | |
728 | acpi_video_init_brightness(struct acpi_video_device *device) | |
729 | { | |
730 | union acpi_object *obj = NULL; | |
d32f6947 | 731 | int i, max_level = 0, count = 0, level_ac_battery = 0; |
1a7c618a | 732 | unsigned long long level, level_old; |
469778c1 JJ |
733 | union acpi_object *o; |
734 | struct acpi_video_device_brightness *br = NULL; | |
1a7c618a | 735 | int result = -EINVAL; |
3cb947fd | 736 | u32 value; |
469778c1 JJ |
737 | |
738 | if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) { | |
739 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available " | |
740 | "LCD brightness level\n")); | |
741 | goto out; | |
742 | } | |
743 | ||
744 | if (obj->package.count < 2) | |
745 | goto out; | |
746 | ||
747 | br = kzalloc(sizeof(*br), GFP_KERNEL); | |
748 | if (!br) { | |
749 | printk(KERN_ERR "can't allocate memory\n"); | |
1a7c618a | 750 | result = -ENOMEM; |
469778c1 JJ |
751 | goto out; |
752 | } | |
753 | ||
d32f6947 | 754 | br->levels = kmalloc((obj->package.count + 2) * sizeof *(br->levels), |
469778c1 | 755 | GFP_KERNEL); |
1a7c618a ZR |
756 | if (!br->levels) { |
757 | result = -ENOMEM; | |
469778c1 | 758 | goto out_free; |
1a7c618a | 759 | } |
469778c1 JJ |
760 | |
761 | for (i = 0; i < obj->package.count; i++) { | |
762 | o = (union acpi_object *)&obj->package.elements[i]; | |
763 | if (o->type != ACPI_TYPE_INTEGER) { | |
764 | printk(KERN_ERR PREFIX "Invalid data\n"); | |
765 | continue; | |
766 | } | |
3cb947fd HG |
767 | value = (u32) o->integer.value; |
768 | /* Skip duplicate entries */ | |
769 | if (count > 2 && br->levels[count - 1] == value) | |
770 | continue; | |
771 | ||
772 | br->levels[count] = value; | |
469778c1 JJ |
773 | |
774 | if (br->levels[count] > max_level) | |
775 | max_level = br->levels[count]; | |
776 | count++; | |
777 | } | |
778 | ||
d32f6947 ZR |
779 | /* |
780 | * some buggy BIOS don't export the levels | |
781 | * when machine is on AC/Battery in _BCL package. | |
782 | * In this case, the first two elements in _BCL packages | |
783 | * are also supported brightness levels that OS should take care of. | |
784 | */ | |
90af2cf6 ZR |
785 | for (i = 2; i < count; i++) { |
786 | if (br->levels[i] == br->levels[0]) | |
d32f6947 | 787 | level_ac_battery++; |
90af2cf6 ZR |
788 | if (br->levels[i] == br->levels[1]) |
789 | level_ac_battery++; | |
790 | } | |
d32f6947 ZR |
791 | |
792 | if (level_ac_battery < 2) { | |
793 | level_ac_battery = 2 - level_ac_battery; | |
794 | br->flags._BCL_no_ac_battery_levels = 1; | |
795 | for (i = (count - 1 + level_ac_battery); i >= 2; i--) | |
796 | br->levels[i] = br->levels[i - level_ac_battery]; | |
797 | count += level_ac_battery; | |
798 | } else if (level_ac_battery > 2) | |
bf6787eb | 799 | ACPI_ERROR((AE_INFO, "Too many duplicates in _BCL package")); |
d32f6947 | 800 | |
d80fb99f ZR |
801 | /* Check if the _BCL package is in a reversed order */ |
802 | if (max_level == br->levels[2]) { | |
803 | br->flags._BCL_reversed = 1; | |
804 | sort(&br->levels[2], count - 2, sizeof(br->levels[2]), | |
805 | acpi_video_cmp_level, NULL); | |
806 | } else if (max_level != br->levels[count - 1]) | |
807 | ACPI_ERROR((AE_INFO, | |
bf6787eb | 808 | "Found unordered _BCL package")); |
469778c1 JJ |
809 | |
810 | br->count = count; | |
811 | device->brightness = br; | |
1a7c618a ZR |
812 | |
813 | /* Check the input/output of _BQC/_BCL/_BCM */ | |
814 | if ((max_level < 100) && (max_level <= (count - 2))) | |
815 | br->flags._BCL_use_index = 1; | |
816 | ||
817 | /* | |
818 | * _BCM is always consistent with _BCL, | |
819 | * at least for all the laptops we have ever seen. | |
820 | */ | |
821 | br->flags._BCM_use_index = br->flags._BCL_use_index; | |
822 | ||
823 | /* _BQC uses INDEX while _BCL uses VALUE in some laptops */ | |
90c53ca4 | 824 | br->curr = level = max_level; |
e047cca6 ZR |
825 | |
826 | if (!device->cap._BQC) | |
827 | goto set_level; | |
828 | ||
a89803df DB |
829 | result = acpi_video_device_lcd_get_level_current(device, |
830 | &level_old, true); | |
1a7c618a ZR |
831 | if (result) |
832 | goto out_free_levels; | |
833 | ||
a50188da | 834 | result = acpi_video_bqc_quirk(device, max_level, level_old); |
1a7c618a ZR |
835 | if (result) |
836 | goto out_free_levels; | |
a50188da AL |
837 | /* |
838 | * cap._BQC may get cleared due to _BQC is found to be broken | |
839 | * in acpi_video_bqc_quirk, so check again here. | |
840 | */ | |
841 | if (!device->cap._BQC) | |
842 | goto set_level; | |
e047cca6 | 843 | |
994fa63c DB |
844 | if (use_bios_initial_backlight) { |
845 | level = acpi_video_bqc_value_to_level(device, level_old); | |
90c53ca4 | 846 | /* |
994fa63c DB |
847 | * On some buggy laptops, _BQC returns an uninitialized |
848 | * value when invoked for the first time, i.e. | |
849 | * level_old is invalid (no matter whether it's a level | |
850 | * or an index). Set the backlight to max_level in this case. | |
90c53ca4 | 851 | */ |
994fa63c DB |
852 | for (i = 2; i < br->count; i++) |
853 | if (level_old == br->levels[i]) | |
854 | break; | |
602b910b | 855 | if (i == br->count || !level) |
994fa63c | 856 | level = max_level; |
90c53ca4 | 857 | } |
e047cca6 | 858 | |
e047cca6 | 859 | set_level: |
90c53ca4 | 860 | result = acpi_video_device_lcd_set_level(device, level); |
e047cca6 ZR |
861 | if (result) |
862 | goto out_free_levels; | |
1a7c618a | 863 | |
d32f6947 ZR |
864 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
865 | "found %d brightness levels\n", count - 2)); | |
469778c1 | 866 | kfree(obj); |
1a7c618a | 867 | return result; |
469778c1 JJ |
868 | |
869 | out_free_levels: | |
870 | kfree(br->levels); | |
871 | out_free: | |
872 | kfree(br); | |
873 | out: | |
874 | device->brightness = NULL; | |
875 | kfree(obj); | |
1a7c618a | 876 | return result; |
469778c1 JJ |
877 | } |
878 | ||
879 | /* | |
880 | * Arg: | |
881 | * device : video output device (LCD, CRT, ..) | |
882 | * | |
883 | * Return Value: | |
1da177e4 LT |
884 | * None |
885 | * | |
98fb8fe1 | 886 | * Find out all required AML methods defined under the output |
1da177e4 LT |
887 | * device. |
888 | */ | |
889 | ||
4be44fcd | 890 | static void acpi_video_device_find_cap(struct acpi_video_device *device) |
1da177e4 | 891 | { |
1da177e4 | 892 | acpi_handle h_dummy1; |
1da177e4 | 893 | |
90130268 | 894 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) { |
1da177e4 LT |
895 | device->cap._ADR = 1; |
896 | } | |
90130268 | 897 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) { |
4be44fcd | 898 | device->cap._BCL = 1; |
1da177e4 | 899 | } |
90130268 | 900 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) { |
4be44fcd | 901 | device->cap._BCM = 1; |
1da177e4 | 902 | } |
2f3d000a YL |
903 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1))) |
904 | device->cap._BQC = 1; | |
c60d638e ZR |
905 | else if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCQ", |
906 | &h_dummy1))) { | |
907 | printk(KERN_WARNING FW_BUG "_BCQ is used instead of _BQC\n"); | |
908 | device->cap._BCQ = 1; | |
909 | } | |
910 | ||
90130268 | 911 | if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) { |
4be44fcd | 912 | device->cap._DDC = 1; |
1da177e4 | 913 | } |
1da177e4 | 914 | |
1a7c618a | 915 | if (acpi_video_backlight_support()) { |
a19a6ee6 | 916 | struct backlight_properties props; |
9661e92c MG |
917 | struct pci_dev *pdev; |
918 | acpi_handle acpi_parent; | |
919 | struct device *parent = NULL; | |
702ed512 | 920 | int result; |
2f3d000a YL |
921 | static int count = 0; |
922 | char *name; | |
1a7c618a ZR |
923 | |
924 | result = acpi_video_init_brightness(device); | |
925 | if (result) | |
926 | return; | |
aeb834d9 | 927 | name = kasprintf(GFP_KERNEL, "acpi_video%d", count); |
2f3d000a YL |
928 | if (!name) |
929 | return; | |
aeb834d9 | 930 | count++; |
2f3d000a | 931 | |
9661e92c MG |
932 | acpi_get_parent(device->dev->handle, &acpi_parent); |
933 | ||
934 | pdev = acpi_get_pci_dev(acpi_parent); | |
935 | if (pdev) { | |
936 | parent = &pdev->dev; | |
937 | pci_dev_put(pdev); | |
938 | } | |
939 | ||
a19a6ee6 | 940 | memset(&props, 0, sizeof(struct backlight_properties)); |
bb7ca747 | 941 | props.type = BACKLIGHT_FIRMWARE; |
a19a6ee6 | 942 | props.max_brightness = device->brightness->count - 3; |
9661e92c MG |
943 | device->backlight = backlight_device_register(name, |
944 | parent, | |
945 | device, | |
a19a6ee6 MG |
946 | &acpi_backlight_ops, |
947 | &props); | |
2f3d000a | 948 | kfree(name); |
e01ce79b ZR |
949 | if (IS_ERR(device->backlight)) |
950 | return; | |
702ed512 | 951 | |
ac7729da RW |
952 | /* |
953 | * Save current brightness level in case we have to restore it | |
954 | * before acpi_video_device_lcd_set_level() is called next time. | |
955 | */ | |
956 | device->backlight->props.brightness = | |
957 | acpi_video_get_brightness(device->backlight); | |
702ed512 | 958 | |
4a703a8f | 959 | device->cooling_dev = thermal_cooling_device_register("LCD", |
702ed512 | 960 | device->dev, &video_cooling_ops); |
4a703a8f | 961 | if (IS_ERR(device->cooling_dev)) { |
4b4fe3b6 | 962 | /* |
4a703a8f | 963 | * Set cooling_dev to NULL so we don't crash trying to |
4b4fe3b6 DT |
964 | * free it. |
965 | * Also, why the hell we are returning early and | |
966 | * not attempt to register video output if cooling | |
967 | * device registration failed? | |
968 | * -- dtor | |
969 | */ | |
4a703a8f | 970 | device->cooling_dev = NULL; |
43ff39f2 | 971 | return; |
4b4fe3b6 | 972 | } |
43ff39f2 | 973 | |
fc3a8828 | 974 | dev_info(&device->dev->dev, "registered as cooling_device%d\n", |
4a703a8f | 975 | device->cooling_dev->id); |
9030062f | 976 | result = sysfs_create_link(&device->dev->dev.kobj, |
4a703a8f | 977 | &device->cooling_dev->device.kobj, |
9030062f JL |
978 | "thermal_cooling"); |
979 | if (result) | |
980 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
4a703a8f | 981 | result = sysfs_create_link(&device->cooling_dev->device.kobj, |
9030062f JL |
982 | &device->dev->dev.kobj, "device"); |
983 | if (result) | |
984 | printk(KERN_ERR PREFIX "Create sysfs link\n"); | |
985 | ||
2f3d000a | 986 | } |
1da177e4 LT |
987 | } |
988 | ||
989 | /* | |
990 | * Arg: | |
991 | * device : video output device (VGA) | |
992 | * | |
993 | * Return Value: | |
994 | * None | |
995 | * | |
98fb8fe1 | 996 | * Find out all required AML methods defined under the video bus device. |
1da177e4 LT |
997 | */ |
998 | ||
4be44fcd | 999 | static void acpi_video_bus_find_cap(struct acpi_video_bus *video) |
1da177e4 | 1000 | { |
4be44fcd | 1001 | acpi_handle h_dummy1; |
1da177e4 | 1002 | |
90130268 | 1003 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) { |
1da177e4 LT |
1004 | video->cap._DOS = 1; |
1005 | } | |
90130268 | 1006 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) { |
1da177e4 LT |
1007 | video->cap._DOD = 1; |
1008 | } | |
90130268 | 1009 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) { |
1da177e4 LT |
1010 | video->cap._ROM = 1; |
1011 | } | |
90130268 | 1012 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) { |
1da177e4 LT |
1013 | video->cap._GPD = 1; |
1014 | } | |
90130268 | 1015 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) { |
1da177e4 LT |
1016 | video->cap._SPD = 1; |
1017 | } | |
90130268 | 1018 | if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) { |
1da177e4 LT |
1019 | video->cap._VPO = 1; |
1020 | } | |
1021 | } | |
1022 | ||
1023 | /* | |
1024 | * Check whether the video bus device has required AML method to | |
1025 | * support the desired features | |
1026 | */ | |
1027 | ||
4be44fcd | 1028 | static int acpi_video_bus_check(struct acpi_video_bus *video) |
1da177e4 | 1029 | { |
4be44fcd | 1030 | acpi_status status = -ENOENT; |
1e4cffe7 | 1031 | struct pci_dev *dev; |
1da177e4 LT |
1032 | |
1033 | if (!video) | |
d550d98d | 1034 | return -EINVAL; |
1da177e4 | 1035 | |
1e4cffe7 | 1036 | dev = acpi_get_pci_dev(video->device->handle); |
22c13f9d TR |
1037 | if (!dev) |
1038 | return -ENODEV; | |
1e4cffe7 | 1039 | pci_dev_put(dev); |
22c13f9d | 1040 | |
1da177e4 LT |
1041 | /* Since there is no HID, CID and so on for VGA driver, we have |
1042 | * to check well known required nodes. | |
1043 | */ | |
1044 | ||
98fb8fe1 | 1045 | /* Does this device support video switching? */ |
3a1151e3 SB |
1046 | if (video->cap._DOS || video->cap._DOD) { |
1047 | if (!video->cap._DOS) { | |
1048 | printk(KERN_WARNING FW_BUG | |
1049 | "ACPI(%s) defines _DOD but not _DOS\n", | |
1050 | acpi_device_bid(video->device)); | |
1051 | } | |
1da177e4 LT |
1052 | video->flags.multihead = 1; |
1053 | status = 0; | |
1054 | } | |
1055 | ||
98fb8fe1 | 1056 | /* Does this device support retrieving a video ROM? */ |
4be44fcd | 1057 | if (video->cap._ROM) { |
1da177e4 LT |
1058 | video->flags.rom = 1; |
1059 | status = 0; | |
1060 | } | |
1061 | ||
98fb8fe1 | 1062 | /* Does this device support configuring which video device to POST? */ |
4be44fcd | 1063 | if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { |
1da177e4 LT |
1064 | video->flags.post = 1; |
1065 | status = 0; | |
1066 | } | |
1067 | ||
d550d98d | 1068 | return status; |
1da177e4 LT |
1069 | } |
1070 | ||
1da177e4 LT |
1071 | /* -------------------------------------------------------------------------- |
1072 | Driver Interface | |
1073 | -------------------------------------------------------------------------- */ | |
1074 | ||
1075 | /* device interface */ | |
82cae999 RZ |
1076 | static struct acpi_video_device_attrib* |
1077 | acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) | |
1078 | { | |
78eed028 DT |
1079 | struct acpi_video_enumerated_device *ids; |
1080 | int i; | |
1081 | ||
1082 | for (i = 0; i < video->attached_count; i++) { | |
1083 | ids = &video->attached_array[i]; | |
1084 | if ((ids->value.int_val & 0xffff) == device_id) | |
1085 | return &ids->value.attrib; | |
1086 | } | |
82cae999 | 1087 | |
82cae999 RZ |
1088 | return NULL; |
1089 | } | |
1da177e4 | 1090 | |
e92a7162 MG |
1091 | static int |
1092 | acpi_video_get_device_type(struct acpi_video_bus *video, | |
1093 | unsigned long device_id) | |
1094 | { | |
1095 | struct acpi_video_enumerated_device *ids; | |
1096 | int i; | |
1097 | ||
1098 | for (i = 0; i < video->attached_count; i++) { | |
1099 | ids = &video->attached_array[i]; | |
1100 | if ((ids->value.int_val & 0xffff) == device_id) | |
1101 | return ids->value.int_val; | |
1102 | } | |
1103 | ||
1104 | return 0; | |
1105 | } | |
1106 | ||
1da177e4 | 1107 | static int |
4be44fcd LB |
1108 | acpi_video_bus_get_one_device(struct acpi_device *device, |
1109 | struct acpi_video_bus *video) | |
1da177e4 | 1110 | { |
27663c58 | 1111 | unsigned long long device_id; |
e92a7162 | 1112 | int status, device_type; |
4be44fcd | 1113 | struct acpi_video_device *data; |
82cae999 | 1114 | struct acpi_video_device_attrib* attribute; |
1da177e4 | 1115 | |
4be44fcd LB |
1116 | status = |
1117 | acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); | |
91e13aa3 AL |
1118 | /* Some device omits _ADR, we skip them instead of fail */ |
1119 | if (ACPI_FAILURE(status)) | |
1120 | return 0; | |
1da177e4 | 1121 | |
91e13aa3 AL |
1122 | data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
1123 | if (!data) | |
1124 | return -ENOMEM; | |
82cae999 | 1125 | |
91e13aa3 AL |
1126 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
1127 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
1128 | device->driver_data = data; | |
1129 | ||
1130 | data->device_id = device_id; | |
1131 | data->video = video; | |
1132 | data->dev = device; | |
1133 | ||
1134 | attribute = acpi_video_get_device_attr(video, device_id); | |
1135 | ||
1136 | if((attribute != NULL) && attribute->device_id_scheme) { | |
1137 | switch (attribute->display_type) { | |
1138 | case ACPI_VIDEO_DISPLAY_CRT: | |
1139 | data->flags.crt = 1; | |
1140 | break; | |
1141 | case ACPI_VIDEO_DISPLAY_TV: | |
1142 | data->flags.tvout = 1; | |
1143 | break; | |
1144 | case ACPI_VIDEO_DISPLAY_DVI: | |
1145 | data->flags.dvi = 1; | |
1146 | break; | |
1147 | case ACPI_VIDEO_DISPLAY_LCD: | |
1148 | data->flags.lcd = 1; | |
1149 | break; | |
1150 | default: | |
1151 | data->flags.unknown = 1; | |
1152 | break; | |
1153 | } | |
1154 | if(attribute->bios_can_detect) | |
1155 | data->flags.bios = 1; | |
1156 | } else { | |
1157 | /* Check for legacy IDs */ | |
1158 | device_type = acpi_video_get_device_type(video, device_id); | |
1159 | /* Ignore bits 16 and 18-20 */ | |
1160 | switch (device_type & 0xffe2ffff) { | |
e92a7162 MG |
1161 | case ACPI_VIDEO_DISPLAY_LEGACY_MONITOR: |
1162 | data->flags.crt = 1; | |
1163 | break; | |
1164 | case ACPI_VIDEO_DISPLAY_LEGACY_PANEL: | |
1165 | data->flags.lcd = 1; | |
1166 | break; | |
1167 | case ACPI_VIDEO_DISPLAY_LEGACY_TV: | |
1168 | data->flags.tvout = 1; | |
1169 | break; | |
1170 | default: | |
1171 | data->flags.unknown = 1; | |
e92a7162 | 1172 | } |
91e13aa3 | 1173 | } |
4be44fcd | 1174 | |
91e13aa3 AL |
1175 | acpi_video_device_bind(video, data); |
1176 | acpi_video_device_find_cap(data); | |
1da177e4 | 1177 | |
91e13aa3 AL |
1178 | status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, |
1179 | acpi_video_device_notify, data); | |
1180 | if (ACPI_FAILURE(status)) | |
1181 | dev_err(&device->dev, "Error installing notify handler\n"); | |
1182 | else | |
1183 | data->flags.notify = 1; | |
1da177e4 | 1184 | |
91e13aa3 AL |
1185 | mutex_lock(&video->device_list_lock); |
1186 | list_add_tail(&data->entry, &video->video_device_list); | |
1187 | mutex_unlock(&video->device_list_lock); | |
1da177e4 | 1188 | |
91e13aa3 | 1189 | return status; |
1da177e4 LT |
1190 | } |
1191 | ||
1192 | /* | |
1193 | * Arg: | |
1194 | * video : video bus device | |
1195 | * | |
1196 | * Return: | |
1197 | * none | |
1198 | * | |
1199 | * Enumerate the video device list of the video bus, | |
1200 | * bind the ids with the corresponding video devices | |
1201 | * under the video bus. | |
4be44fcd | 1202 | */ |
1da177e4 | 1203 | |
4be44fcd | 1204 | static void acpi_video_device_rebind(struct acpi_video_bus *video) |
1da177e4 | 1205 | { |
ff102ea9 DT |
1206 | struct acpi_video_device *dev; |
1207 | ||
bbac81f5 | 1208 | mutex_lock(&video->device_list_lock); |
ff102ea9 DT |
1209 | |
1210 | list_for_each_entry(dev, &video->video_device_list, entry) | |
4be44fcd | 1211 | acpi_video_device_bind(video, dev); |
ff102ea9 | 1212 | |
bbac81f5 | 1213 | mutex_unlock(&video->device_list_lock); |
1da177e4 LT |
1214 | } |
1215 | ||
1216 | /* | |
1217 | * Arg: | |
1218 | * video : video bus device | |
1219 | * device : video output device under the video | |
1220 | * bus | |
1221 | * | |
1222 | * Return: | |
1223 | * none | |
1224 | * | |
1225 | * Bind the ids with the corresponding video devices | |
1226 | * under the video bus. | |
4be44fcd | 1227 | */ |
1da177e4 LT |
1228 | |
1229 | static void | |
4be44fcd LB |
1230 | acpi_video_device_bind(struct acpi_video_bus *video, |
1231 | struct acpi_video_device *device) | |
1da177e4 | 1232 | { |
78eed028 | 1233 | struct acpi_video_enumerated_device *ids; |
4be44fcd | 1234 | int i; |
1da177e4 | 1235 | |
78eed028 DT |
1236 | for (i = 0; i < video->attached_count; i++) { |
1237 | ids = &video->attached_array[i]; | |
1238 | if (device->device_id == (ids->value.int_val & 0xffff)) { | |
1239 | ids->bind_info = device; | |
1da177e4 LT |
1240 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); |
1241 | } | |
1242 | } | |
1da177e4 LT |
1243 | } |
1244 | ||
1245 | /* | |
1246 | * Arg: | |
1247 | * video : video bus device | |
1248 | * | |
1249 | * Return: | |
1250 | * < 0 : error | |
1251 | * | |
1252 | * Call _DOD to enumerate all devices attached to display adapter | |
1253 | * | |
4be44fcd | 1254 | */ |
1da177e4 LT |
1255 | |
1256 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) | |
1257 | { | |
4be44fcd LB |
1258 | int status; |
1259 | int count; | |
1260 | int i; | |
78eed028 | 1261 | struct acpi_video_enumerated_device *active_list; |
4be44fcd LB |
1262 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
1263 | union acpi_object *dod = NULL; | |
1264 | union acpi_object *obj; | |
1da177e4 | 1265 | |
1c59283e AH |
1266 | if (!video->cap._DOD) |
1267 | return AE_NOT_EXIST; | |
1268 | ||
90130268 | 1269 | status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); |
1da177e4 | 1270 | if (!ACPI_SUCCESS(status)) { |
a6fc6720 | 1271 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD")); |
d550d98d | 1272 | return status; |
1da177e4 LT |
1273 | } |
1274 | ||
50dd0969 | 1275 | dod = buffer.pointer; |
1da177e4 | 1276 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
a6fc6720 | 1277 | ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data")); |
1da177e4 LT |
1278 | status = -EFAULT; |
1279 | goto out; | |
1280 | } | |
1281 | ||
1282 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", | |
4be44fcd | 1283 | dod->package.count)); |
1da177e4 | 1284 | |
78eed028 DT |
1285 | active_list = kcalloc(1 + dod->package.count, |
1286 | sizeof(struct acpi_video_enumerated_device), | |
1287 | GFP_KERNEL); | |
1288 | if (!active_list) { | |
1da177e4 LT |
1289 | status = -ENOMEM; |
1290 | goto out; | |
1291 | } | |
1292 | ||
1293 | count = 0; | |
1294 | for (i = 0; i < dod->package.count; i++) { | |
50dd0969 | 1295 | obj = &dod->package.elements[i]; |
1da177e4 LT |
1296 | |
1297 | if (obj->type != ACPI_TYPE_INTEGER) { | |
78eed028 DT |
1298 | printk(KERN_ERR PREFIX |
1299 | "Invalid _DOD data in element %d\n", i); | |
1300 | continue; | |
1da177e4 | 1301 | } |
78eed028 DT |
1302 | |
1303 | active_list[count].value.int_val = obj->integer.value; | |
1304 | active_list[count].bind_info = NULL; | |
4be44fcd LB |
1305 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, |
1306 | (int)obj->integer.value)); | |
1da177e4 LT |
1307 | count++; |
1308 | } | |
1da177e4 | 1309 | |
6044ec88 | 1310 | kfree(video->attached_array); |
4be44fcd | 1311 | |
78eed028 | 1312 | video->attached_array = active_list; |
1da177e4 | 1313 | video->attached_count = count; |
78eed028 DT |
1314 | |
1315 | out: | |
02438d87 | 1316 | kfree(buffer.pointer); |
d550d98d | 1317 | return status; |
1da177e4 LT |
1318 | } |
1319 | ||
4be44fcd LB |
1320 | static int |
1321 | acpi_video_get_next_level(struct acpi_video_device *device, | |
1322 | u32 level_current, u32 event) | |
1da177e4 | 1323 | { |
63f0edfc | 1324 | int min, max, min_above, max_below, i, l, delta = 255; |
f4715189 TT |
1325 | max = max_below = 0; |
1326 | min = min_above = 255; | |
63f0edfc | 1327 | /* Find closest level to level_current */ |
0a3db1ce | 1328 | for (i = 2; i < device->brightness->count; i++) { |
63f0edfc AS |
1329 | l = device->brightness->levels[i]; |
1330 | if (abs(l - level_current) < abs(delta)) { | |
1331 | delta = l - level_current; | |
1332 | if (!delta) | |
1333 | break; | |
1334 | } | |
1335 | } | |
1336 | /* Ajust level_current to closest available level */ | |
1337 | level_current += delta; | |
0a3db1ce | 1338 | for (i = 2; i < device->brightness->count; i++) { |
f4715189 TT |
1339 | l = device->brightness->levels[i]; |
1340 | if (l < min) | |
1341 | min = l; | |
1342 | if (l > max) | |
1343 | max = l; | |
1344 | if (l < min_above && l > level_current) | |
1345 | min_above = l; | |
1346 | if (l > max_below && l < level_current) | |
1347 | max_below = l; | |
1348 | } | |
1349 | ||
1350 | switch (event) { | |
1351 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: | |
1352 | return (level_current < max) ? min_above : min; | |
1353 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: | |
1354 | return (level_current < max) ? min_above : max; | |
1355 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: | |
1356 | return (level_current > min) ? max_below : min; | |
1357 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: | |
1358 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: | |
1359 | return 0; | |
1360 | default: | |
1361 | return level_current; | |
1362 | } | |
1da177e4 LT |
1363 | } |
1364 | ||
c8890f90 | 1365 | static int |
4be44fcd | 1366 | acpi_video_switch_brightness(struct acpi_video_device *device, int event) |
1da177e4 | 1367 | { |
27663c58 | 1368 | unsigned long long level_current, level_next; |
c8890f90 ZR |
1369 | int result = -EINVAL; |
1370 | ||
28c32e99 ZR |
1371 | /* no warning message if acpi_backlight=vendor is used */ |
1372 | if (!acpi_video_backlight_support()) | |
1373 | return 0; | |
1374 | ||
469778c1 | 1375 | if (!device->brightness) |
c8890f90 ZR |
1376 | goto out; |
1377 | ||
1378 | result = acpi_video_device_lcd_get_level_current(device, | |
a89803df DB |
1379 | &level_current, |
1380 | false); | |
c8890f90 ZR |
1381 | if (result) |
1382 | goto out; | |
1383 | ||
1da177e4 | 1384 | level_next = acpi_video_get_next_level(device, level_current, event); |
c8890f90 | 1385 | |
24450c7a | 1386 | result = acpi_video_device_lcd_set_level(device, level_next); |
c8890f90 | 1387 | |
36342742 MG |
1388 | if (!result) |
1389 | backlight_force_update(device->backlight, | |
1390 | BACKLIGHT_UPDATE_HOTKEY); | |
1391 | ||
c8890f90 ZR |
1392 | out: |
1393 | if (result) | |
1394 | printk(KERN_ERR PREFIX "Failed to switch the brightness\n"); | |
1395 | ||
1396 | return result; | |
1da177e4 LT |
1397 | } |
1398 | ||
e92a7162 MG |
1399 | int acpi_video_get_edid(struct acpi_device *device, int type, int device_id, |
1400 | void **edid) | |
1401 | { | |
1402 | struct acpi_video_bus *video; | |
1403 | struct acpi_video_device *video_device; | |
1404 | union acpi_object *buffer = NULL; | |
1405 | acpi_status status; | |
1406 | int i, length; | |
1407 | ||
1408 | if (!device || !acpi_driver_data(device)) | |
1409 | return -EINVAL; | |
1410 | ||
1411 | video = acpi_driver_data(device); | |
1412 | ||
1413 | for (i = 0; i < video->attached_count; i++) { | |
1414 | video_device = video->attached_array[i].bind_info; | |
1415 | length = 256; | |
1416 | ||
1417 | if (!video_device) | |
1418 | continue; | |
1419 | ||
82069552 ZR |
1420 | if (!video_device->cap._DDC) |
1421 | continue; | |
1422 | ||
e92a7162 MG |
1423 | if (type) { |
1424 | switch (type) { | |
1425 | case ACPI_VIDEO_DISPLAY_CRT: | |
1426 | if (!video_device->flags.crt) | |
1427 | continue; | |
1428 | break; | |
1429 | case ACPI_VIDEO_DISPLAY_TV: | |
1430 | if (!video_device->flags.tvout) | |
1431 | continue; | |
1432 | break; | |
1433 | case ACPI_VIDEO_DISPLAY_DVI: | |
1434 | if (!video_device->flags.dvi) | |
1435 | continue; | |
1436 | break; | |
1437 | case ACPI_VIDEO_DISPLAY_LCD: | |
1438 | if (!video_device->flags.lcd) | |
1439 | continue; | |
1440 | break; | |
1441 | } | |
1442 | } else if (video_device->device_id != device_id) { | |
1443 | continue; | |
1444 | } | |
1445 | ||
1446 | status = acpi_video_device_EDID(video_device, &buffer, length); | |
1447 | ||
1448 | if (ACPI_FAILURE(status) || !buffer || | |
1449 | buffer->type != ACPI_TYPE_BUFFER) { | |
1450 | length = 128; | |
1451 | status = acpi_video_device_EDID(video_device, &buffer, | |
1452 | length); | |
1453 | if (ACPI_FAILURE(status) || !buffer || | |
1454 | buffer->type != ACPI_TYPE_BUFFER) { | |
1455 | continue; | |
1456 | } | |
1457 | } | |
1458 | ||
1459 | *edid = buffer->buffer.pointer; | |
1460 | return length; | |
1461 | } | |
1462 | ||
1463 | return -ENODEV; | |
1464 | } | |
1465 | EXPORT_SYMBOL(acpi_video_get_edid); | |
1466 | ||
1da177e4 | 1467 | static int |
4be44fcd LB |
1468 | acpi_video_bus_get_devices(struct acpi_video_bus *video, |
1469 | struct acpi_device *device) | |
1da177e4 | 1470 | { |
fba4e087 | 1471 | int status = 0; |
ff102ea9 | 1472 | struct acpi_device *dev; |
1da177e4 | 1473 | |
fba4e087 IM |
1474 | /* |
1475 | * There are systems where video module known to work fine regardless | |
1476 | * of broken _DOD and ignoring returned value here doesn't cause | |
1477 | * any issues later. | |
1478 | */ | |
1479 | acpi_video_device_enumerate(video); | |
1da177e4 | 1480 | |
ff102ea9 | 1481 | list_for_each_entry(dev, &device->children, node) { |
1da177e4 LT |
1482 | |
1483 | status = acpi_video_bus_get_one_device(dev, video); | |
ea9f8856 | 1484 | if (status) { |
91e13aa3 AL |
1485 | dev_err(&dev->dev, "Can't attach device\n"); |
1486 | break; | |
1da177e4 | 1487 | } |
1da177e4 | 1488 | } |
d550d98d | 1489 | return status; |
1da177e4 LT |
1490 | } |
1491 | ||
4be44fcd | 1492 | static int acpi_video_bus_put_one_device(struct acpi_video_device *device) |
1da177e4 | 1493 | { |
031ec77b | 1494 | acpi_status status; |
1da177e4 LT |
1495 | |
1496 | if (!device || !device->video) | |
d550d98d | 1497 | return -ENOENT; |
1da177e4 | 1498 | |
91e13aa3 AL |
1499 | if (device->flags.notify) { |
1500 | status = acpi_remove_notify_handler(device->dev->handle, | |
1501 | ACPI_DEVICE_NOTIFY, acpi_video_device_notify); | |
1502 | if (ACPI_FAILURE(status)) | |
1503 | dev_err(&device->dev->dev, | |
1504 | "Can't remove video notify handler\n"); | |
cfa806f0 | 1505 | } |
91e13aa3 | 1506 | |
e29b3ee3 | 1507 | if (device->backlight) { |
e29b3ee3 KP |
1508 | backlight_device_unregister(device->backlight); |
1509 | device->backlight = NULL; | |
1510 | } | |
4a703a8f | 1511 | if (device->cooling_dev) { |
702ed512 ZR |
1512 | sysfs_remove_link(&device->dev->dev.kobj, |
1513 | "thermal_cooling"); | |
4a703a8f | 1514 | sysfs_remove_link(&device->cooling_dev->device.kobj, |
702ed512 | 1515 | "device"); |
4a703a8f DT |
1516 | thermal_cooling_device_unregister(device->cooling_dev); |
1517 | device->cooling_dev = NULL; | |
702ed512 | 1518 | } |
ff102ea9 | 1519 | |
d550d98d | 1520 | return 0; |
1da177e4 LT |
1521 | } |
1522 | ||
4be44fcd | 1523 | static int acpi_video_bus_put_devices(struct acpi_video_bus *video) |
1da177e4 | 1524 | { |
4be44fcd | 1525 | int status; |
ff102ea9 | 1526 | struct acpi_video_device *dev, *next; |
1da177e4 | 1527 | |
bbac81f5 | 1528 | mutex_lock(&video->device_list_lock); |
1da177e4 | 1529 | |
ff102ea9 | 1530 | list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { |
1da177e4 | 1531 | |
ff102ea9 | 1532 | status = acpi_video_bus_put_one_device(dev); |
4be44fcd LB |
1533 | if (ACPI_FAILURE(status)) |
1534 | printk(KERN_WARNING PREFIX | |
1535 | "hhuuhhuu bug in acpi video driver.\n"); | |
1da177e4 | 1536 | |
ff102ea9 DT |
1537 | if (dev->brightness) { |
1538 | kfree(dev->brightness->levels); | |
1539 | kfree(dev->brightness); | |
1540 | } | |
1541 | list_del(&dev->entry); | |
1542 | kfree(dev); | |
1da177e4 LT |
1543 | } |
1544 | ||
bbac81f5 | 1545 | mutex_unlock(&video->device_list_lock); |
ff102ea9 | 1546 | |
d550d98d | 1547 | return 0; |
1da177e4 LT |
1548 | } |
1549 | ||
1550 | /* acpi_video interface */ | |
1551 | ||
4be44fcd | 1552 | static int acpi_video_bus_start_devices(struct acpi_video_bus *video) |
1da177e4 | 1553 | { |
a21101c4 | 1554 | return acpi_video_bus_DOS(video, 0, 0); |
1da177e4 LT |
1555 | } |
1556 | ||
4be44fcd | 1557 | static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) |
1da177e4 LT |
1558 | { |
1559 | return acpi_video_bus_DOS(video, 0, 1); | |
1560 | } | |
1561 | ||
7015558f | 1562 | static void acpi_video_bus_notify(struct acpi_device *device, u32 event) |
1da177e4 | 1563 | { |
7015558f | 1564 | struct acpi_video_bus *video = acpi_driver_data(device); |
e9dab196 | 1565 | struct input_dev *input; |
17c452f9 | 1566 | int keycode = 0; |
e9dab196 | 1567 | |
1da177e4 | 1568 | if (!video) |
d550d98d | 1569 | return; |
1da177e4 | 1570 | |
e9dab196 | 1571 | input = video->input; |
1da177e4 LT |
1572 | |
1573 | switch (event) { | |
98fb8fe1 | 1574 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch, |
1da177e4 | 1575 | * most likely via hotkey. */ |
14e04fb3 | 1576 | acpi_bus_generate_proc_event(device, event, 0); |
8a37c65d | 1577 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1578 | break; |
1579 | ||
98fb8fe1 | 1580 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video |
1da177e4 LT |
1581 | * connector. */ |
1582 | acpi_video_device_enumerate(video); | |
1583 | acpi_video_device_rebind(video); | |
14e04fb3 | 1584 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1585 | keycode = KEY_SWITCHVIDEOMODE; |
1da177e4 LT |
1586 | break; |
1587 | ||
4be44fcd | 1588 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */ |
25c87f7f | 1589 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1590 | keycode = KEY_SWITCHVIDEOMODE; |
1591 | break; | |
4be44fcd | 1592 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
25c87f7f | 1593 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1594 | keycode = KEY_VIDEO_NEXT; |
1595 | break; | |
4be44fcd | 1596 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
14e04fb3 | 1597 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1598 | keycode = KEY_VIDEO_PREV; |
1da177e4 LT |
1599 | break; |
1600 | ||
1601 | default: | |
1602 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1603 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1604 | break; |
1605 | } | |
1606 | ||
8a37c65d LT |
1607 | if (acpi_notifier_call_chain(device, event, 0)) |
1608 | /* Something vetoed the keypress. */ | |
1609 | keycode = 0; | |
17c452f9 MG |
1610 | |
1611 | if (keycode) { | |
1612 | input_report_key(input, keycode, 1); | |
1613 | input_sync(input); | |
1614 | input_report_key(input, keycode, 0); | |
1615 | input_sync(input); | |
1616 | } | |
e9dab196 | 1617 | |
d550d98d | 1618 | return; |
1da177e4 LT |
1619 | } |
1620 | ||
4be44fcd | 1621 | static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1622 | { |
50dd0969 | 1623 | struct acpi_video_device *video_device = data; |
4be44fcd | 1624 | struct acpi_device *device = NULL; |
e9dab196 LY |
1625 | struct acpi_video_bus *bus; |
1626 | struct input_dev *input; | |
17c452f9 | 1627 | int keycode = 0; |
1da177e4 | 1628 | |
1da177e4 | 1629 | if (!video_device) |
d550d98d | 1630 | return; |
1da177e4 | 1631 | |
e6afa0de | 1632 | device = video_device->dev; |
e9dab196 LY |
1633 | bus = video_device->video; |
1634 | input = bus->input; | |
1da177e4 LT |
1635 | |
1636 | switch (event) { | |
4be44fcd | 1637 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
8a681a4d ZR |
1638 | if (brightness_switch_enabled) |
1639 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1640 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1641 | keycode = KEY_BRIGHTNESS_CYCLE; |
1642 | break; | |
4be44fcd | 1643 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
8a681a4d ZR |
1644 | if (brightness_switch_enabled) |
1645 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1646 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1647 | keycode = KEY_BRIGHTNESSUP; |
1648 | break; | |
4be44fcd | 1649 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
8a681a4d ZR |
1650 | if (brightness_switch_enabled) |
1651 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1652 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1653 | keycode = KEY_BRIGHTNESSDOWN; |
1654 | break; | |
70f23fd6 | 1655 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightness */ |
8a681a4d ZR |
1656 | if (brightness_switch_enabled) |
1657 | acpi_video_switch_brightness(video_device, event); | |
25c87f7f | 1658 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 LY |
1659 | keycode = KEY_BRIGHTNESS_ZERO; |
1660 | break; | |
4be44fcd | 1661 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
8a681a4d ZR |
1662 | if (brightness_switch_enabled) |
1663 | acpi_video_switch_brightness(video_device, event); | |
14e04fb3 | 1664 | acpi_bus_generate_proc_event(device, event, 0); |
e9dab196 | 1665 | keycode = KEY_DISPLAY_OFF; |
1da177e4 LT |
1666 | break; |
1667 | default: | |
1668 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1669 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1670 | break; |
1671 | } | |
e9dab196 | 1672 | |
7761f638 | 1673 | acpi_notifier_call_chain(device, event, 0); |
17c452f9 MG |
1674 | |
1675 | if (keycode) { | |
1676 | input_report_key(input, keycode, 1); | |
1677 | input_sync(input); | |
1678 | input_report_key(input, keycode, 0); | |
1679 | input_sync(input); | |
1680 | } | |
e9dab196 | 1681 | |
d550d98d | 1682 | return; |
1da177e4 LT |
1683 | } |
1684 | ||
ac7729da RW |
1685 | static int acpi_video_resume(struct notifier_block *nb, |
1686 | unsigned long val, void *ign) | |
863c1490 MG |
1687 | { |
1688 | struct acpi_video_bus *video; | |
1689 | struct acpi_video_device *video_device; | |
1690 | int i; | |
1691 | ||
ac7729da RW |
1692 | switch (val) { |
1693 | case PM_HIBERNATION_PREPARE: | |
1694 | case PM_SUSPEND_PREPARE: | |
1695 | case PM_RESTORE_PREPARE: | |
1696 | return NOTIFY_DONE; | |
1697 | } | |
863c1490 | 1698 | |
ac7729da RW |
1699 | video = container_of(nb, struct acpi_video_bus, pm_nb); |
1700 | ||
1701 | dev_info(&video->device->dev, "Restoring backlight state\n"); | |
863c1490 MG |
1702 | |
1703 | for (i = 0; i < video->attached_count; i++) { | |
1704 | video_device = video->attached_array[i].bind_info; | |
1705 | if (video_device && video_device->backlight) | |
1706 | acpi_video_set_brightness(video_device->backlight); | |
1707 | } | |
ac7729da RW |
1708 | |
1709 | return NOTIFY_OK; | |
863c1490 MG |
1710 | } |
1711 | ||
c504f8cb ZR |
1712 | static acpi_status |
1713 | acpi_video_bus_match(acpi_handle handle, u32 level, void *context, | |
1714 | void **return_value) | |
1715 | { | |
1716 | struct acpi_device *device = context; | |
1717 | struct acpi_device *sibling; | |
1718 | int result; | |
1719 | ||
1720 | if (handle == device->handle) | |
1721 | return AE_CTRL_TERMINATE; | |
1722 | ||
1723 | result = acpi_bus_get_device(handle, &sibling); | |
1724 | if (result) | |
1725 | return AE_OK; | |
1726 | ||
1727 | if (!strcmp(acpi_device_name(sibling), ACPI_VIDEO_BUS_NAME)) | |
1728 | return AE_ALREADY_EXISTS; | |
1729 | ||
1730 | return AE_OK; | |
1731 | } | |
1732 | ||
ac7729da RW |
1733 | static int instance; |
1734 | ||
4be44fcd | 1735 | static int acpi_video_bus_add(struct acpi_device *device) |
1da177e4 | 1736 | { |
f51e8391 | 1737 | struct acpi_video_bus *video; |
e9dab196 | 1738 | struct input_dev *input; |
f51e8391 | 1739 | int error; |
c504f8cb ZR |
1740 | acpi_status status; |
1741 | ||
8c9b7a7b RW |
1742 | if (device->handler) |
1743 | return -EINVAL; | |
1744 | ||
c504f8cb ZR |
1745 | status = acpi_walk_namespace(ACPI_TYPE_DEVICE, |
1746 | device->parent->handle, 1, | |
1747 | acpi_video_bus_match, NULL, | |
1748 | device, NULL); | |
1749 | if (status == AE_ALREADY_EXISTS) { | |
1750 | printk(KERN_WARNING FW_BUG | |
1751 | "Duplicate ACPI video bus devices for the" | |
1752 | " same VGA controller, please try module " | |
1753 | "parameter \"video.allow_duplicates=1\"" | |
1754 | "if the current driver doesn't work.\n"); | |
1755 | if (!allow_duplicates) | |
1756 | return -ENODEV; | |
1757 | } | |
1da177e4 | 1758 | |
36bcbec7 | 1759 | video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
1da177e4 | 1760 | if (!video) |
d550d98d | 1761 | return -ENOMEM; |
1da177e4 | 1762 | |
e6d9da1d ZR |
1763 | /* a hack to fix the duplicate name "VID" problem on T61 */ |
1764 | if (!strcmp(device->pnp.bus_id, "VID")) { | |
1765 | if (instance) | |
1766 | device->pnp.bus_id[3] = '0' + instance; | |
1767 | instance ++; | |
1768 | } | |
f3b39f13 ZY |
1769 | /* a hack to fix the duplicate name "VGA" problem on Pa 3553 */ |
1770 | if (!strcmp(device->pnp.bus_id, "VGA")) { | |
1771 | if (instance) | |
1772 | device->pnp.bus_id[3] = '0' + instance; | |
1773 | instance++; | |
1774 | } | |
e6d9da1d | 1775 | |
e6afa0de | 1776 | video->device = device; |
1da177e4 LT |
1777 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
1778 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); | |
db89b4f0 | 1779 | device->driver_data = video; |
1da177e4 LT |
1780 | |
1781 | acpi_video_bus_find_cap(video); | |
f51e8391 DT |
1782 | error = acpi_video_bus_check(video); |
1783 | if (error) | |
1784 | goto err_free_video; | |
1da177e4 | 1785 | |
bbac81f5 | 1786 | mutex_init(&video->device_list_lock); |
1da177e4 LT |
1787 | INIT_LIST_HEAD(&video->video_device_list); |
1788 | ||
ea9f8856 IM |
1789 | error = acpi_video_bus_get_devices(video, device); |
1790 | if (error) | |
91e13aa3 | 1791 | goto err_put_video; |
1da177e4 | 1792 | |
e9dab196 | 1793 | video->input = input = input_allocate_device(); |
f51e8391 DT |
1794 | if (!input) { |
1795 | error = -ENOMEM; | |
b60e7f61 | 1796 | goto err_put_video; |
f51e8391 | 1797 | } |
e9dab196 | 1798 | |
b60e7f61 IM |
1799 | error = acpi_video_bus_start_devices(video); |
1800 | if (error) | |
1801 | goto err_free_input_dev; | |
1802 | ||
e9dab196 LY |
1803 | snprintf(video->phys, sizeof(video->phys), |
1804 | "%s/video/input0", acpi_device_hid(video->device)); | |
1805 | ||
1806 | input->name = acpi_device_name(video->device); | |
1807 | input->phys = video->phys; | |
1808 | input->id.bustype = BUS_HOST; | |
1809 | input->id.product = 0x06; | |
91c05c66 | 1810 | input->dev.parent = &device->dev; |
e9dab196 LY |
1811 | input->evbit[0] = BIT(EV_KEY); |
1812 | set_bit(KEY_SWITCHVIDEOMODE, input->keybit); | |
1813 | set_bit(KEY_VIDEO_NEXT, input->keybit); | |
1814 | set_bit(KEY_VIDEO_PREV, input->keybit); | |
1815 | set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit); | |
1816 | set_bit(KEY_BRIGHTNESSUP, input->keybit); | |
1817 | set_bit(KEY_BRIGHTNESSDOWN, input->keybit); | |
1818 | set_bit(KEY_BRIGHTNESS_ZERO, input->keybit); | |
1819 | set_bit(KEY_DISPLAY_OFF, input->keybit); | |
e9dab196 | 1820 | |
1da177e4 | 1821 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
4be44fcd LB |
1822 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
1823 | video->flags.multihead ? "yes" : "no", | |
1824 | video->flags.rom ? "yes" : "no", | |
1825 | video->flags.post ? "yes" : "no"); | |
1da177e4 | 1826 | |
ac7729da RW |
1827 | video->pm_nb.notifier_call = acpi_video_resume; |
1828 | video->pm_nb.priority = 0; | |
ea9f8856 IM |
1829 | error = register_pm_notifier(&video->pm_nb); |
1830 | if (error) | |
301f33fb DC |
1831 | goto err_stop_video; |
1832 | ||
1833 | error = input_register_device(input); | |
1834 | if (error) | |
1835 | goto err_unregister_pm_notifier; | |
ac7729da | 1836 | |
f51e8391 DT |
1837 | return 0; |
1838 | ||
301f33fb DC |
1839 | err_unregister_pm_notifier: |
1840 | unregister_pm_notifier(&video->pm_nb); | |
f51e8391 DT |
1841 | err_stop_video: |
1842 | acpi_video_bus_stop_devices(video); | |
b60e7f61 IM |
1843 | err_free_input_dev: |
1844 | input_free_device(input); | |
ea9f8856 | 1845 | err_put_video: |
f51e8391 DT |
1846 | acpi_video_bus_put_devices(video); |
1847 | kfree(video->attached_array); | |
f51e8391 DT |
1848 | err_free_video: |
1849 | kfree(video); | |
db89b4f0 | 1850 | device->driver_data = NULL; |
1da177e4 | 1851 | |
f51e8391 | 1852 | return error; |
1da177e4 LT |
1853 | } |
1854 | ||
51fac838 | 1855 | static int acpi_video_bus_remove(struct acpi_device *device) |
1da177e4 | 1856 | { |
4be44fcd | 1857 | struct acpi_video_bus *video = NULL; |
1da177e4 | 1858 | |
1da177e4 LT |
1859 | |
1860 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 1861 | return -EINVAL; |
1da177e4 | 1862 | |
50dd0969 | 1863 | video = acpi_driver_data(device); |
1da177e4 | 1864 | |
ac7729da RW |
1865 | unregister_pm_notifier(&video->pm_nb); |
1866 | ||
1da177e4 | 1867 | acpi_video_bus_stop_devices(video); |
1da177e4 | 1868 | acpi_video_bus_put_devices(video); |
1da177e4 | 1869 | |
e9dab196 | 1870 | input_unregister_device(video->input); |
6044ec88 | 1871 | kfree(video->attached_array); |
1da177e4 LT |
1872 | kfree(video); |
1873 | ||
d550d98d | 1874 | return 0; |
1da177e4 LT |
1875 | } |
1876 | ||
c6996bdd AC |
1877 | static int __init is_i740(struct pci_dev *dev) |
1878 | { | |
1879 | if (dev->device == 0x00D1) | |
1880 | return 1; | |
1881 | if (dev->device == 0x7000) | |
1882 | return 1; | |
1883 | return 0; | |
1884 | } | |
1885 | ||
74a365b3 MG |
1886 | static int __init intel_opregion_present(void) |
1887 | { | |
c6996bdd | 1888 | int opregion = 0; |
74a365b3 MG |
1889 | struct pci_dev *dev = NULL; |
1890 | u32 address; | |
1891 | ||
1892 | for_each_pci_dev(dev) { | |
1893 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
1894 | continue; | |
1895 | if (dev->vendor != PCI_VENDOR_ID_INTEL) | |
1896 | continue; | |
c6996bdd AC |
1897 | /* We don't want to poke around undefined i740 registers */ |
1898 | if (is_i740(dev)) | |
1899 | continue; | |
74a365b3 MG |
1900 | pci_read_config_dword(dev, 0xfc, &address); |
1901 | if (!address) | |
1902 | continue; | |
c6996bdd | 1903 | opregion = 1; |
74a365b3 | 1904 | } |
c6996bdd | 1905 | return opregion; |
74a365b3 MG |
1906 | } |
1907 | ||
1908 | int acpi_video_register(void) | |
1da177e4 | 1909 | { |
4be44fcd | 1910 | int result = 0; |
86e437f0 ZY |
1911 | if (register_count) { |
1912 | /* | |
1913 | * if the function of acpi_video_register is already called, | |
1914 | * don't register the acpi_vide_bus again and return no error. | |
1915 | */ | |
1916 | return 0; | |
1917 | } | |
1da177e4 | 1918 | |
1da177e4 | 1919 | result = acpi_bus_register_driver(&acpi_video_bus); |
39fe394d | 1920 | if (result < 0) |
d550d98d | 1921 | return -ENODEV; |
1da177e4 | 1922 | |
86e437f0 ZY |
1923 | /* |
1924 | * When the acpi_video_bus is loaded successfully, increase | |
1925 | * the counter reference. | |
1926 | */ | |
1927 | register_count = 1; | |
1928 | ||
d550d98d | 1929 | return 0; |
1da177e4 | 1930 | } |
74a365b3 MG |
1931 | EXPORT_SYMBOL(acpi_video_register); |
1932 | ||
86e437f0 ZY |
1933 | void acpi_video_unregister(void) |
1934 | { | |
1935 | if (!register_count) { | |
1936 | /* | |
1937 | * If the acpi video bus is already unloaded, don't | |
1938 | * unload it again and return directly. | |
1939 | */ | |
1940 | return; | |
1941 | } | |
1942 | acpi_bus_unregister_driver(&acpi_video_bus); | |
1943 | ||
86e437f0 ZY |
1944 | register_count = 0; |
1945 | ||
1946 | return; | |
1947 | } | |
1948 | EXPORT_SYMBOL(acpi_video_unregister); | |
1949 | ||
74a365b3 MG |
1950 | /* |
1951 | * This is kind of nasty. Hardware using Intel chipsets may require | |
1952 | * the video opregion code to be run first in order to initialise | |
1953 | * state before any ACPI video calls are made. To handle this we defer | |
1954 | * registration of the video class until the opregion code has run. | |
1955 | */ | |
1956 | ||
1957 | static int __init acpi_video_init(void) | |
1958 | { | |
461b68cd CW |
1959 | /* |
1960 | * Let the module load even if ACPI is disabled (e.g. due to | |
1961 | * a broken BIOS) so that i915.ko can still be loaded on such | |
1962 | * old systems without an AcpiOpRegion. | |
1963 | * | |
1964 | * acpi_video_register() will report -ENODEV later as well due | |
1965 | * to acpi_disabled when i915.ko tries to register itself afterwards. | |
1966 | */ | |
1967 | if (acpi_disabled) | |
1968 | return 0; | |
1969 | ||
45cb50e6 ZR |
1970 | dmi_check_system(video_dmi_table); |
1971 | ||
74a365b3 MG |
1972 | if (intel_opregion_present()) |
1973 | return 0; | |
1974 | ||
1975 | return acpi_video_register(); | |
1976 | } | |
1da177e4 | 1977 | |
86e437f0 | 1978 | static void __exit acpi_video_exit(void) |
1da177e4 | 1979 | { |
86e437f0 | 1980 | acpi_video_unregister(); |
1da177e4 | 1981 | |
d550d98d | 1982 | return; |
1da177e4 LT |
1983 | } |
1984 | ||
1985 | module_init(acpi_video_init); | |
1986 | module_exit(acpi_video_exit); |