From: Ankit Nautiyal ankit.k.nautiyal@intel.com
[ Upstream commit 63720a561b3c98199adf0c73e152807f15cc3b7f ]
For cases where DP has HDMI2.1 sink and FRL Link issues are detected, reset the flag to state FRL trained status before restarting FRL training.
Fixes: 9488a030ac91 ("drm/i915: Add support for enabling link status and recovery") Cc: Swati Sharma swati2.sharma@intel.com Cc: Ankit Nautiyal ankit.k.nautiyal@intel.com Cc: Uma Shankar uma.shankar@intel.com (v2) Cc: Jani Nikula jani.nikula@intel.com Signed-off-by: Ankit Nautiyal ankit.k.nautiyal@intel.com Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20221011063447.904649-2-ankit.... (cherry picked from commit 47e1a59e60c688c5f95b67277202f05b7e84c189) Signed-off-by: Tvrtko Ursulin tvrtko.ursulin@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/i915/display/intel_dp.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 3ed7eeacc706..d4492b6d23d2 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -3923,6 +3923,8 @@ intel_dp_handle_hdmi_link_status_change(struct intel_dp *intel_dp)
drm_dp_pcon_hdmi_frl_link_error_count(&intel_dp->aux, &intel_dp->attached_connector->base);
+ intel_dp->frl.is_trained = false; + /* Restart FRL training or fall back to TMDS mode */ intel_dp_check_frl_training(intel_dp); }