From: Hyunwoong Kim <khw0178.kim@samsung.com>
Date: Wed, 29 Dec 2010 01:12:43 +0000 (-0300)
Subject: [media] s5p-fimc: update checking scaling ratio range
X-Git-Tag: v2.6.39-rc1~86^2~409
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1b09f292eb99fd6a3601e8421c463905dbb0a866;p=pandora-kernel.git

[media] s5p-fimc: update checking scaling ratio range

Horizontal and vertical scaling range are according to the following equations.
If (SRC_Width >= 64 x DST_Width) { Exit(-1);  /* Out of Horizontal scale range}
If (SRC_Height >= 64 x DST_Height) { Exit(-1);  /* Out of Vertical scale range}

fimc_check_scaler_ratio() is used to check if horizontal and vertical
scale range are valid or not. To use fimc_check_scaler_ratio,
source and destination format should be set by VIDIOC_S_FMT.
And in case of scaling up, it doesn't have to check the scale range.

Reviewed-by: Jonghun Han <jonghun.han@samsung.com>
Signed-off-by: Hyunwoong Kim <khw0178.kim@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

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