[Bug 78453] [HAWAII] Get acceleration working

https://bugs.freedesktop.org/show_bug.cgi?id=78453

--- Comment #131 from Marek Olšák maraeo@gmail.com --- DPM seems to be working here. If I do "sudo cat /sys/kernel/debug/dri/64/radeon_pm_info" with no 3D app running, I get:

power level avg sclk: 30047 mclk: 15000

If I do the same while glxgears is running, I get:

power level avg sclk: 80000 mclk: 112500

That said, the performance seems to be lower than Bonaire. The open source game Torcs has 27 FPS with Bonaire and 18 FPS with Hawaii. radeontop shows 100% GPU usage with Hawaii while Torcs is running.