From dc50ba7f9a6d9a920409892c7f30bce266067345 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Wed, 26 Jun 2013 00:33:35 -0400
Subject: [PATCH] drm/radeon/kms: add dpm support for evergreen (v4)

This adds dpm support for evergreen asics.  This includes:
- clockgating
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2 switching (requires additional acpi support)

Set radeon.dpm=1 to enable.

v2: reduce stack usage, rename ulv struct
v3: fix thermal interrupt check notices by Jerome
v4: fix state enable

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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