Ville Syrjälä 2bbd6dba84 drm/i915: Try to use fast+narrow link on eDP again and fall back to the old max strategy on failure ... Some new eDP panels don't like to operate at the max parameters, and instead we need to go for an optimal confiugration. That unfortunately doesn't work with older eDP panels which are generally only guaranteed to work at the max parameters. To solve these two conflicting requirements let's start with the optimal setup, and if that fails we start again with the max parameters. The downside is probably an extra modeset when we switch strategies but I don't see a good way to avoid that. For a bit of history we first tried to go for the fast+narrow in commit 7769db5883 ("drm/i915/dp: optimize eDP 1.4+ link config fast and narrow"). but that had to be reverted due to regression on older panels in commit f11cb1c19a ("drm/i915/dp: revert back to max link rate and lane count on eDP"). So now we try to get the best of both worlds by using both strategies. v2: Deal with output_bpp and uapi vs. hw state split Reword some comments v3: Rebase Cc: Jani Nikula <jani.nikula@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Albert Astals Cid <aacid@kde.org> # v5.0 backport Cc: Emanuele Panigati <ilpanich@gmail.com> # v5.0 backport Cc: Matteo Iervasi <matteoiervasi@gmail.com> # v5.0 backport Cc: Timo Aaltonen <tjaalton@ubuntu.com> Cc: Kai-Heng Feng <kai.heng.feng@canonical.com> Reviewed-by: Manasi Navare <manasi.d.navare@intel.com> References: https://bugs.freedesktop.org/show_bug.cgi?id=105267 References: https://bugs.freedesktop.org/show_bug.cgi?id=109959 References: https://gitlab.freedesktop.org/drm/intel/issues/272 Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210107182026.24848-1-ville.syrjala@linux.intel.com		2021-01-11 20:13:11 +02:00
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drm	drm/i915: Try to use fast+narrow link on eDP again and fall back to the old max strategy on failure	2021-01-11 20:13:11 +02:00
host1x	gpu/host1x: bus: Add missing description for 'driver'	2020-11-05 22:12:55 +01:00
ipu-v3	gpu/ipu-v3/ipu-di: Strip out 2 unused 'di_sync_config' entries	2021-01-04 12:54:18 +01:00
trace
vga	pci-v5.11-changes	2020-12-15 16:49:59 -08:00
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