From 6d129beac7099bddad368b6a02e8e0a67f59e9b8 Mon Sep 17 00:00:00 2001
From: Imre Deak <imre.deak@intel.com>
Date: Wed, 5 Mar 2014 16:20:54 +0200
Subject: [PATCH] drm/i915: check port power domain when reading the encoder hw
 state

Since the encoder is tied to its port, we need to make sure the power
domain for that port is on before reading out the encoder HW state.

Note that this also covers also all connector get_hw_state handlers,
since all those just call the corresponding encoder get_hw_state
handler, which checks - after this change - for all power domains
the connector needs.

v2:
- no change
v3:
- push down the power domain checks into the specific encoder
  get_hw_state handlers (Daniel)

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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