Ville Syrjälä 4dccc4d517 drm/i915: Turn off g4x DP port in .post_disable() ... While Bspec doesn't list a specific sequence for turning off the DP port on g4x we are getting an underrun if the port is disabled in the .disable() hook. Looks like the pipe stops when the port stops, and by that time the plane disable may not have completed yet. Also the plane(s) seem to end up in some wonky state when this happens as they also signal another underrun immediately after we turn them back on during the next enable sequence. We could add a vblank wait in .disable() to avoid wedging the planes, but I assume we're still tripping up the pipe in some way. So it seems better to me to just follow the ILK+ sequence and turn off the DP port in .post_disable() instead. This sequence doesn't seem to suffer from this problem. Could be it was always the intended sequence for DP and the gen4 bspec was just never updated to include it. Originally we used the bad sequence even on ilk+, but I changed that in commit 08aff3fe26 ("drm/i915: Move DP port disable to post_disable for pch platforms") as it was causing issues on those platforms as well. I left out g4x then only because I didn't have the hardware to test it. Now that I do it's fairly clear that the ilk+ sequence is also the right choice for g4x. v2: Fix whitespace fail (Jani) Mention the ilk+ commit (Jani) Cc: stable@vger.kernel.org Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180613160553.11664-2-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com> (cherry picked from commit 51a9f6dfc0) Signed-off-by: Jani Nikula <jani.nikula@intel.com>		2018-06-19 15:48:06 +03:00
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drm	drm/i915: Turn off g4x DP port in .post_disable()	2018-06-19 15:48:06 +03:00
host1x	drm for v4.18-rc1	2018-06-06 08:16:33 -07:00
ipu-v3	gpu: ipu-v3: prg: avoid possible array underflow	2018-03-15 17:52:08 +01:00
vga	docs: Fix some broken references	2018-06-15 18:10:01 -03:00
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