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34 lines
1.1 KiB
34 lines
1.1 KiB
Video Output Switcher Control |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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2006 [email protected] |
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The output sysfs class driver provides an abstract video output layer that |
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can be used to hook platform specific methods to enable/disable video output |
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device through common sysfs interface. For example, on my IBM ThinkPad T42 |
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laptop, The ACPI video driver registered its output devices and read/write |
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method for 'state' with output sysfs class. The user interface under sysfs is:: |
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linux:/sys/class/video_output # tree . |
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. |
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|-- CRT0 |
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| |-- device -> ../../../devices/pci0000:00/0000:00:01.0 |
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| |-- state |
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| |-- subsystem -> ../../../class/video_output |
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| `-- uevent |
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|-- DVI0 |
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| |-- device -> ../../../devices/pci0000:00/0000:00:01.0 |
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| |-- state |
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| |-- subsystem -> ../../../class/video_output |
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| `-- uevent |
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|-- LCD0 |
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| |-- device -> ../../../devices/pci0000:00/0000:00:01.0 |
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| |-- state |
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| |-- subsystem -> ../../../class/video_output |
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| `-- uevent |
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`-- TV0 |
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|-- device -> ../../../devices/pci0000:00/0000:00:01.0 |
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|-- state |
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|-- subsystem -> ../../../class/video_output |
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`-- uevent |
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