Question on S3 on evergreen

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Hi, 
	I have a question on S3 suspend/resume process for evergreen
chipset.
	Generally introduction, I am developing WEC7 graphics driver on
evergreen chipset. Alex guide me on this. And right now I move to S3
part work. I have ported radeon_suspend_kms() and radeon_resume_kms()
functions from linux to CE. Actually I have validated that the
evergreen_suspend() and evergreen_resume() work already on CE. But when
the resume work is done and the screen is shown up, I found the 3D
engine works wrong. The HW acceleration of it is not correct anymore.
Misrendering is happening. By tracing the root cause, I suspect that the
problem may be in evergreen_gpu_init()( in evergreen_startup) call when
resume(), but I am not sure. Can you guys tell me which part I should
debug?
	By the way, the linux kernel source I used is from 2010.10. So
quite a lot patches have been committed into community during this
period. Right now, the kernel source I used is around date
2011.7(Version 3.0.0). Is there any patches update for S3 during this
period?



Thanks,
Frank 

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