[Bug 52411] [snb] intel gpu never go in rc6 after suspend

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=52411





--- Comment #16 from Alexander Bersenev <bay at hackerdom.ru>  2013-01-12 18:30:43 ---
I tried to insert just after I915_WRITE_NOTRACE(FORCEWAKE, 0) posting readings
of:
ECOBUS (GOOD)
GEN6_GT_MODE (GOOD)
ECOBUS + GEN6_GT_MODE (GOOD)
GTFIFODBG + GTFIFODBG (GOOD)
ECOBUS + GTFIFODBG (GOOD)
GEN6_GT_MODE + GTFIFODBG (GOOD)

<NONE> (BAD)
GTFIFODBG (BAD)
FORCEWAKE_VLV (BAD)
<SOME REGISTER > 0x40000> <SOME REGISTER > 0x40000> (BAD)

I not remember what was the value of SOME REGISTER exactly but is definately >
0x40000.

I can check any other readings after I915_WRITE_NOTRACE if it helps.

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