Better power management for Radeon driver in Linux

AMD developer Alex Deucher has published a patch series, consisting of 165 changes, that significantly improves support for the runtime power management features in the Linux kernel’s Radeon driver. With the patches, the driver can now handle not only AMD’s DPM (Dynamic Power Management) but also ASPM (Active State Power Management, used on PCIe devices) for several series, from the R600 family to the Southern Islands, which are used by the Radeon HD models 2400 to 7970 and some models from the 8000 family.