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Manasi Navare 9df1e3ff60 drm/i915/display/vrr: Reset VRR capable property on a long hpd
With some VRR panels, user can turn VRR ON/OFF on the fly from the panel settings.
When VRR is turned OFF ,sends a long HPD to the driver clearing the Ignore MSA bit
in the DPCD. Currently the driver parses that onevery HPD but fails to reset
the corresponding VRR Capable Connector property.
Hence the userspace still sees this as VRR Capable panel which is incorrect.

Fix this by explicitly resetting the connector property.

v2: Reset vrr capable if status == connector_disconnected
v3: Use i915 and use bool vrr_capable (Jani Nikula)
v4: Move vrr_capable to after update modes call (Jani N)
Remove the redundant comment (Jan N)
v5: Fixes the regression on older platforms by resetting the VRR
only if HAS_VRR
v6: Remove the checks from driver, add in drm core before
setting VRR prop (Ville)
v7: Move VRR set/reset to set/unset_edid (Ville)

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Fixes: 9bc34b4d0f ("drm/i915/display/vrr: Reset VRR capable property on a long hpd")
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220303233222.4698-1-manasi.d.navare@intel.com
(cherry picked from commit d999ad1079)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2022-04-19 10:03:00 +03:00
arch Two x86 fixes related to TSX: 2022-04-17 09:55:59 -07:00
block block: don't print I/O error warning for dead disks 2022-04-15 06:33:03 -06:00
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Documentation Devicetree fixes for v5.18, part 2: 2022-04-16 17:07:50 -07:00
drivers drm/i915/display/vrr: Reset VRR capable property on a long hpd 2022-04-19 10:03:00 +03:00
fs Merge branch 'akpm' (patches from Andrew) 2022-04-15 15:57:18 -07:00
include gpio fixes for v5.18-rc3 2022-04-16 17:01:43 -07:00
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lib Driver core changes for 5.18-rc2 2022-04-10 09:55:09 -10:00
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virt KVM/arm64 fixes for 5.18, take #1 2022-04-08 12:30:04 -04:00
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Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
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MAINTAINERS ARM: SoC fixes for 5.18, part 2 2022-04-16 16:51:39 -07:00
Makefile Linux 5.18-rc3 2022-04-17 13:57:31 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.