From: Daniel Vetter Date: Thu, 11 Apr 2013 14:29:06 +0000 (+0200) Subject: drm/i915: Fixup pfit disabling for gen2/3 X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~55^2~40^2~15 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=87476d632c5041cfb962630e618d787243c81ed8;p=pandora-kernel.git drm/i915: Fixup pfit disabling for gen2/3 The recent rework of the pfit handling didn't take into account that the panel fitter is fixed to pipe B: commit 24a1f16de97c4cf0029d9acd04be06db32208726 Author: Mika Kuoppala Date: Fri Feb 8 16:35:37 2013 +0200 drm/i915: disable shared panel fitter for pipe Fix this up by properly computing the pipe the pfit is on. Also extract the logic into its own function, add a debug assert to check that the pipe is off (mostly just documentation) and add some debug output. If pipe A was disabled after pipe B was set up, the panel fitter will be disabled. Now most userspace doesn't do modesets in this order, which is why I couldn't ever reproduce this and why it took me so long to figure out. We really need hw state readout and check support for the pannel fitter ... Reported-by: Hans de Bruin Cc: Mika Kuoppala Cc: Hans de Bruin References: http://permalink.gmane.org/gmane.comp.freedesktop.xorg.drivers.intel/19049 Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter --- Reading git-diff-tree failed