[PATCH 069/165] drm/radeon/kms: add common dpm infrastructure

[K. Schnass]

Thanks for the work the whole thing seems to work fine on my RV770, although I 
cannot really say if does anything as I found no way to query the current clk 
or voltage?! There is one little gripe though, the rest of the code uses 
DRM_INFO() for printing whereas this series uses plain printk() resulting in 
some weird looking dmesg output:

Jun 27 14:41:54 my-little-devil kernel: [drm]   VGA-1
Jun 27 14:41:54 my-little-devil kernel: [drm]   DDC: 0x7e60 0x7e60 0x7e64 
0x7e64 0x7e68 0x7e68 0x7e6c 0x7e6c
Jun 27 14:41:54 my-little-devil kernel: [drm]   Encoders:
Jun 27 14:41:54 my-little-devil kernel: [drm]     CRT2: INTERNAL_KLDSCP_DAC2
Jun 27 14:41:54 my-little-devil kernel: [drm] Internal thermal controller with 
fan control
Jun 27 14:41:54 my-little-devil kernel: == power state 0 ==
Jun 27 14:41:54 my-little-devil kernel:         ui class: none
Jun 27 14:41:54 my-little-devil kernel:         internal class: boot 
Jun 27 14:41:54 my-little-devil kernel:         caps: video 
Jun 27 14:41:54 my-little-devil kernel:         uvd    vclk: 0 dclk: 0
Jun 27 14:41:54 my-little-devil kernel:                 power level 0    sclk: 
62500 mclk: 99300 vddc: 1123
Jun 27 14:41:54 my-little-devil kernel:                 power level 1    sclk: 
62500 mclk: 99300 vddc: 1123
Jun 27 14:41:54 my-little-devil kernel:                 power level 2    sclk: 
62500 mclk: 99300 vddc: 1123

best regards
K. Schnass