From: Alex Deucher <alexdeucher@gmail.com>
Date: Sat, 24 Apr 2010 18:50:23 +0000 (-0400)
Subject: drm/radeon/kms/pm: rework power management
X-Git-Tag: v2.6.35-rc1~451^2~37
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a424816fb37f894a37585cf86dfdd6b8b1dc681f;p=pandora-kernel.git

drm/radeon/kms/pm: rework power management

Add two new sysfs attributes:
- dynpm
- power_state

Echoing 0/1 to dynpm disables/enables dynamic power management.
The driver scales the sclk dynamically based on the number of
queued fences.  dynpm only scales sclk dynamically in single head
mode.

Echoing x.y to power_state selects a static power state (x) and clock
mode (y).  This allows you to statically select a power state and clock
mode.  Selecting a static clock mode will disable dynpm.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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