How to change radeon power state

[Daniel Mota Leite]

Hi

	i've a one ATI/AMD RV630 card with kernel 3.11.5 and dpm enabled.
All works fine, but minor annoying problem. The dpm is choosing a power
state that isn't the best...

	This is my card :

01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RV 630 XT AGP [Radeon HD 2600 XT AGP]

	Here is the dpm output:

[   12.358738] == power state 0 ==
[   12.358796] 	ui class: none
[   12.358895] 	internal class: boot 
[   12.359069] 	caps: video 
[   12.359209] 	uvd    vclk: 0 dclk: 0
[   12.359266] 		power level 0    sclk: 80000 mclk: 70000 vddc: 1200
[   12.359326] 		power level 1    sclk: 80000 mclk: 70000 vddc: 1200
[   12.359386] 		power level 2    sclk: 80000 mclk: 70000 vddc: 1200
[   12.359445] 	status: c r b 
[   12.359671] == power state 1 ==
[   12.359726] 	ui class: performance
[   12.359824] 	internal class: ovrdrv 
[   12.359965] 	caps: video 
[   12.360109] 	uvd    vclk: 0 dclk: 0
[   12.360166] 		power level 0    sclk: 15000 mclk: 42000 vddc: 1050
[   12.360226] 		power level 1    sclk: 20000 mclk: 50000 vddc: 1080
[   12.360285] 		power level 2    sclk: 40000 mclk: 70000 vddc: 1100
[   12.360344] 	status: 
[   12.360442] == power state 2 ==
[   12.360497] 	ui class: none
[   12.360594] 	internal class: none
[   12.360734] 	caps: video 
[   12.360873] 	uvd    vclk: 0 dclk: 0
[   12.360930] 		power level 0    sclk: 20000 mclk: 50000 vddc: 1080
[   12.360990] 		power level 1    sclk: 30000 mclk: 50000 vddc: 1100
[   12.361056] 		power level 2    sclk: 80000 mclk: 70000 vddc: 1200
[   12.361115] 	status: 
[   12.361415] switching from power state:
[   12.361471] 	ui class: none
[   12.361568] 	internal class: boot 
[   12.361708] 	caps: video 
[   12.361847] 	uvd    vclk: 0 dclk: 0
[   12.361903] 		power level 0    sclk: 80000 mclk: 70000 vddc: 1200
[   12.361963] 		power level 1    sclk: 80000 mclk: 70000 vddc: 1200
[   12.362029] 		power level 2    sclk: 80000 mclk: 70000 vddc: 1200
[   12.362088] 	status: c b 
[   12.362303] switching to power state:
[   12.362359] 	ui class: performance
[   12.362457] 	internal class: ovrdrv 
[   12.362596] 	caps: video 
[   12.362735] 	uvd    vclk: 0 dclk: 0
[   12.362792] 		power level 0    sclk: 15000 mclk: 42000 vddc: 1050
[   12.362853] 		power level 1    sclk: 20000 mclk: 50000 vddc: 1080
[   12.362913] 		power level 2    sclk: 40000 mclk: 70000 vddc: 1100
[   12.362972] 	status: r 



	As you can see, the driver choose the performance profile, but
that one is limited to 400MHz, half of what this card can do. Of course i
want to be able jump the GPU to 800MHz.	So is there any easy way
	to choose the power state 2 instead of power state 1?


	Also, when in using tvtime on a second head, the dpm jumps the gpu
clock to the max, yet i would like to use the middle speed. tvtime doesn't
require that much resources (even low can do it!). Yet i found no way to
force the middle power level. i can "echo high" and "echo low" to
power_dpm_force_performance_level but trying "mid", "middle" fail. 
Is there any support to use the middle power level?

Thanks in advance.
higuita
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