From e5cbfbfb2e0e44ed18cbadc02e0247bd1e60fb39 Mon Sep 17 00:00:00 2001
From: Imre Deak <imre.deak@intel.com>
Date: Thu, 9 Jan 2014 17:08:16 +0200
Subject: [PATCH] drm/i915: vlv: W/a for hotplug/manual VGA detection
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

VGA detection requires the reference clock to be on, so make sure this
is the case.

This fixes VGA hotplug/manual detection where all pipes are off and so
we would normally disable all clocks.

v2:
- Instead of disabling PSR clock gating, force the reference clock on
  through the DPLL_A register. (Kin Chan S <kin.s.chan@intel.com>)

v3:
- Move enabling of the clock to intel_reset_dpio() and use the DPLL_B
  register instead, where we already have a similar tweak for the CRI
  clock. (Ville)

Reported-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
Reading git-format-patch failed