From: Thierry Reding <treding@nvidia.com>
Date: Tue, 2 Dec 2014 14:12:28 +0000 (+0100)
Subject: drm/tegra: output: Make ->setup_clock() optional
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~75^2~25^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d5bae6f33ee98cf4c6939c4b8db2fc76c1eed720;p=pandora-kernel.git

drm/tegra: output: Make ->setup_clock() optional

In order to transition output drivers to using the struct tegra_output
as a helper rather than midlayer, make this callback optional. Instead
drivers should implement the equivalent as part of ->mode_fixup(). For
the conversion to atomic modesetting a new callback ->atomic_check()
should be implemented that updates the display controller's state with
the corresponding parent clock, rate and shift clock divider.

Signed-off-by: Thierry Reding <treding@nvidia.com>
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