drm/radeon/dpm: add pre/post_set_power_state callback (TN)

This properly implemented dynamic state adjustment by
using a working copy of the requested and current
power states.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-01-16 13:53:40 -05:00
commit a284c48ae7
4 changed files with 61 additions and 22 deletions