On Sat, Nov 04, 2006 at 09:22:00PM +0800, Yu Luming wrote:
> Add output class document
>
> signed-off-by ? [email protected]
> ---
> [patch 4/6] Add output class document
> video-output.txt | 34 ++++++++++++++++++++++++++++++++++
> 1 file changed, 34 insertions(+)
>
> diff --git a/Documentation/video-output.txt b/Documentation/video-output.txt
> new file mode 100644
> index 0000000..71b1dba
> --- /dev/null
> +++ b/Documentation/video-output.txt
> @@ -0,0 +1,34 @@
> +
> + Video Output Switcher Control
> + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> + 2006 [email protected]
> +
> +The output sysfs class driver is to provide video output abstract layer that
> +can be used to hook platform specific methods to enable/disable video output
> +device through common sysfs interface. For example, on my IBM Thinkpad T42
> +aptop, acpi video driver registered its output devices and read/write method
> +for state with output sysfs class. The user interface under sysfs is :
> +
> +linux:/sys/class/video_output # tree .
> +.
> +|-- CRT0
> +| |-- device -> ../../../devices/pci0000:00/0000:00:01.0
> +| |-- state
> +| |-- subsystem -> ../../../class/video_output
> +| `-- uevent
> +|-- DVI0
> +| |-- device -> ../../../devices/pci0000:00/0000:00:01.0
> +| |-- state
> +| |-- subsystem -> ../../../class/video_output
> +| `-- uevent
> +|-- LCD0
> +| |-- device -> ../../../devices/pci0000:00/0000:00:01.0
> +| |-- state
> +| |-- subsystem -> ../../../class/video_output
> +| `-- uevent
> +`-- TV0
> + |-- device -> ../../../devices/pci0000:00/0000:00:01.0
> + |-- state
> + |-- subsystem -> ../../../class/video_output
> + `-- uevent
Use a struct device instead of a struct class_device please. That will
change your tree a bit here (you will have symlinks at the top level.
Have you been working with the X developers that have been doing a lot
of work in describing and interacting with these different video
devices? I think you might want to work with them so that you don't
create an interface that will not be used by them.
thanks,
greg k-h
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
