drm: rcar-du: Refactor DEFR8 feature
authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Mon, 8 Dec 2014 22:21:12 +0000 (00:21 +0200)
committerLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tue, 23 Dec 2014 10:01:50 +0000 (12:01 +0200)
Rename the feature from RCAR_DU_FEATURE_DEFR8 to
RCAR_DU_FEATURE_EXT_CTRL_REGS to cover all extended control registers in
addition to the DEFR8 register.

Usage of the feature is refactored to optimize runtime operation and
prepare for external clock support.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

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