From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Fri, 9 Sep 2011 16:10:02 +0000 (-0300)
Subject: [media] V4L: add .g_std() core V4L2 subdevice operation
X-Git-Tag: v3.2-rc1~63^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1a99b972a86ba9c3984c042f7f641458ad4812d0;p=pandora-kernel.git

[media] V4L: add .g_std() core V4L2 subdevice operation

VIDIOC_G_STD can return the current TV-norm to the user in one of two ways:
if an .vidioc_g_std() ioctl operation is provided by the driver, it is
called, otherwise the value ot the .current_norm field of struct
video_device is returned. Since subdevice drivers currently have no access
to struct video_device objects, the only way to provide this information to
the user is by implementing a .g_std() method.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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