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Commit 42a430f5 authored by Ville Syrjälä's avatar Ville Syrjälä Committed by Daniel Vetter
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drm/i915: Gen2 FBC1 CFB pitch wants 32B units 



On gen2 the compressed frame buffer pitch is specified in 32B units
rather than the 64B units used on gen3+.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: default avatarImre Deak <imre.deak@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 566b734a

drivers/gpu/drm/i915/intel_pm.c

+5 −2
Original line number Diff line number Diff line
@@ -104,7 +104,10 @@ static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval) 
	if (fb->pitches[0] < cfb_pitch)

		cfb_pitch = fb->pitches[0];



	/* FBC_CTL wants 64B units */

	/* FBC_CTL wants 32B or 64B units */

	if (IS_GEN2(dev))

		cfb_pitch = (cfb_pitch / 32) - 1;

	else

		cfb_pitch = (cfb_pitch / 64) - 1;

	plane = intel_crtc->plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB;