From 4e2cbc1f0e18f365c2a0d6744a48365e82e6707e Mon Sep 17 00:00:00 2001 From: Ankit Nautiyal Date: Tue, 11 Oct 2022 12:04:40 +0530 Subject: [PATCH] drm/i915/dp: Reset frl trained flag before restarting FRL training MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ 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 Cc: Ankit Nautiyal Cc: Uma Shankar (v2) Cc: Jani Nikula Signed-off-by: Ankit Nautiyal Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20221011063447.904649-2-ankit.k.nautiyal@intel.com (cherry picked from commit 47e1a59e60c688c5f95b67277202f05b7e84c189) Signed-off-by: Tvrtko Ursulin Signed-off-by: Sasha Levin --- 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 f87e4d510ea5..1ccdf2da042b 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -3497,6 +3497,8 @@ 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); }