drm/radeon/kms: add dpm support for btc (v3)
authorAlex Deucher <alexander.deucher@amd.com>
Wed, 26 Jun 2013 04:15:24 +0000 (00:15 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Thu, 27 Jun 2013 23:15:44 +0000 (19:15 -0400)
This adds dpm support for btc 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
v3: attempt to fix state enable

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

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