Manasi Navare 0414444588 drm/i915/dp: Link train Fallback on eDP only if fallback link BW can fit panel's native mode ... This patch fixes the original commit c0cfb10d9e ("drm/i915/edp: Do not do link training fallback or prune modes on EDP") that causes a blank screen in case of certain eDP panels (Eg: seen on Dell XPS13 9350) where first link training fails and a retraining is required by falling back to lower link rate/lane count. In case of some panels they advertise higher link rate/lane count than whats required for supporting the panel's native mode. But we always link train at highest link rate/lane count for eDP and if that fails we can still fallback to lower link rate/lane count as long as the fallback link BW still fits the native mode to avoid pruning the panel's native mode yet retraining at fallback values to recover from a blank screen. v3: * Add const for fixed_mode (Ville) v2: * Send uevent if link failure on eDP unconditionally Fixes: c0cfb10d9e ("drm/i915/edp: Do not do link training fallback or prune modes on EDP") Cc: Clinton Taylor <clinton.a.taylor@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: <stable@vger.kernel.org> # v4.17+ Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107489 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105338 Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> Tested-by: Alexander Wilson <alexander.wilson@ncf.edu> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181009212804.702-1-manasi.d.navare@intel.com (cherry picked from commit 1e712535c5) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>		2018-10-17 18:23:59 -07:00
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drm	drm/i915/dp: Link train Fallback on eDP only if fallback link BW can fit panel's native mode	2018-10-17 18:23:59 -07:00
host1x	gpu: host1x: Detach Host1x from IOMMU DMA domain on arm32	2018-09-26 17:11:14 +02:00
ipu-v3	drm pull for 4.19-rc1	2018-08-15 17:39:07 -07:00
vga	ALSA: hda - Enable runtime PM only for discrete GPU	2018-09-13 17:58:30 +02:00
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