[Intel-gfx] [PATCH] drm/i915: fix tiling on IGDNG

[Zhenyu Wang]

On 2009.09.01 08:41:58 -0700, Jesse Barnes wrote:
> Do you need an
> 
> else {
> 	int dsp_arb;
> 	dsp_arb = I915_READ(DISP_ARB_CTL);
> 	I915_WRITE(DISP_ARB_CTL, dsp_arb &
> 			(~DISP_TILE_SURFACE_SWIZZLING));
> }
> 
> for the non-tiled case?  Or can you just set this once at setup time
> and forget it?
> 

Some draft testing showed we might just be sure it's setup whenever scan
buffer tiling is enabled, so this bit is not one time setting, but to 
enable address swizzle if surface is tiling as is set in plane control.
I'll send update patch. Thanks for reviewing this!


-- 
Open Source Technology Center, Intel ltd.

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