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author | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-02-10 14:45:43 -0500 |
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committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-02-10 14:45:43 -0500 |
commit | 81b7bbd1932a04869d4c8635a75222dfc6089f96 (patch) | |
tree | 285ae868a1e3a41fb0dbfe346c28e380949bcb55 /Documentation/video-output.txt | |
parent | 98051995ab44b993f992946055edc6115351f725 (diff) | |
parent | 66efc5a7e3061c3597ac43a8bb1026488d57e66b (diff) |
Merge branch 'linus'
Conflicts:
drivers/scsi/ipr.c
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'Documentation/video-output.txt')
-rw-r--r-- | Documentation/video-output.txt | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/video-output.txt b/Documentation/video-output.txt new file mode 100644 index 000000000000..e517011be4f9 --- /dev/null +++ b/Documentation/video-output.txt | |||
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1 | |||
2 | Video Output Switcher Control | ||
3 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ||
4 | 2006 luming.yu@intel.com | ||
5 | |||
6 | The output sysfs class driver provides an abstract video output layer that | ||
7 | can be used to hook platform specific methods to enable/disable video output | ||
8 | device through common sysfs interface. For example, on my IBM ThinkPad T42 | ||
9 | laptop, The ACPI video driver registered its output devices and read/write | ||
10 | method for 'state' with output sysfs class. The user interface under sysfs is: | ||
11 | |||
12 | linux:/sys/class/video_output # tree . | ||
13 | . | ||
14 | |-- CRT0 | ||
15 | | |-- device -> ../../../devices/pci0000:00/0000:00:01.0 | ||
16 | | |-- state | ||
17 | | |-- subsystem -> ../../../class/video_output | ||
18 | | `-- uevent | ||
19 | |-- DVI0 | ||
20 | | |-- device -> ../../../devices/pci0000:00/0000:00:01.0 | ||
21 | | |-- state | ||
22 | | |-- subsystem -> ../../../class/video_output | ||
23 | | `-- uevent | ||
24 | |-- LCD0 | ||
25 | | |-- device -> ../../../devices/pci0000:00/0000:00:01.0 | ||
26 | | |-- state | ||
27 | | |-- subsystem -> ../../../class/video_output | ||
28 | | `-- uevent | ||
29 | `-- TV0 | ||
30 | |-- device -> ../../../devices/pci0000:00/0000:00:01.0 | ||
31 | |-- state | ||
32 | |-- subsystem -> ../../../class/video_output | ||
33 | `-- uevent | ||
34 | |||