From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Mon, 13 Jul 2009 23:15:02 +0000 (-0300)
Subject: V4L/DVB (12239): em28xx: fix webcam scaling
X-Git-Tag: v2.6.31-rc5~89^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5569996421fa1cfc1fc0d9e683ac1def46ea985d;p=pandora-kernel.git

V4L/DVB (12239): em28xx: fix webcam scaling

While trying to fix an mt9v001 webcam, I noticed that HSCALE/VSCALE do
work with em28xx + webcam. The issue is that the scaling setup depends
on the number of visible rows/cols of the input image.

With mt9v011 (Silvercrest), the resolution is 640x480. So, the scaling
is different from a normal TV image (720x480 on NTSC). This were causing
a wrong scaling and a previous patch disabled scaling.

As each sensor have their different resolution setting, the xres/yres
should be adjusted accordingly with the input sensor.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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