From: Hans Verkuil <hans.verkuil@cisco.com>
Date: Sun, 27 Apr 2014 06:22:17 +0000 (-0300)
Subject: [media] v4l2-ctrls: create type_ops
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~155^2~359
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0176077a813933a547b7a913377a87d615b7c108;p=pandora-kernel.git

[media] v4l2-ctrls: create type_ops

Since compound controls can have non-standard types we need to be able to do
type-specific checks etc. In order to make that easy type operations are added.
There are four operations:

- equal: check if two values are equal
- init: initialize a value
- log: log the value
- validate: validate a new value

The v4l2_ctrl struct adds p_new and p_cur unions at the end of the struct.
This union provides a standard way of accessing control types through a pointer,
which greatly simplifies internal control processing.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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