linux/Documentation/video-output.txt
<<
>>
Prefs
   1
   2                Video Output Switcher Control
   3                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4                2006 luming.yu@intel.com
   5
   6The output sysfs class driver provides an abstract video output layer that
   7can be used to hook platform specific methods to enable/disable video output
   8device through common sysfs interface. For example, on my IBM ThinkPad T42
   9laptop, The ACPI video driver registered its output devices and read/write
  10method for 'state' with output sysfs class. The user interface under sysfs is:
  11
  12linux:/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
  35
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.