[Intel-gfx] [PATCH] drm/i915: skip FDI & PCH enabling for DP_A

[Yuanhan Liu]

On Wed, Jan 05, 2011 at 10:31:48AM -0800, Jesse Barnes wrote:
> eDP on the CPU doesn't need the PCH set up at all, it can in fact cause
> problems.  So avoid FDI training and PCH PLL enabling in that case.

Hey, skip PCH set up on eDP does fix the bug 29791(eDP blank screen issue).

Well, I didn't test with this patch, as it depends on the serial patches
you send before(I would like to have a test today).  I just made up a simple 
patch to skip PCH set up if HAS_eDP is met.


Thanks,
Yuanhan Liu