From 664326f8a5b7e4ab7ed469acaadc63d2a05d8720 Mon Sep 17 00:00:00 2001
From: "A.Sunil Kamath" <sunil.kamath@intel.com>
Date: Mon, 24 Nov 2014 13:37:44 +0530
Subject: [PATCH] drm/i915/bxt: Implement enable/disable for Display C9 state

v2: Modified as per review comments from Imre
- Mention enabling instead of allowing in the debug trace and
  remove unnecessary comments.

v3:
- Rebase to latest.
- Move DC9-related functions from intel_display.c to intel_runtime_pm.c.

v4: (imre)
- remove DC5 disabling, it's a nop at this point
- squashed in Suketu's "Assert the requirements to enter or exit DC9"
  patch
- remove check for RUNTIME_PM from assert_can_enable_dc9, it's not a
  dependency

Signed-off-by: A.Sunil Kamath <sunil.kamath@intel.com> (v3)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Sagar Kamble <sagar.a.kamble@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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