[Intel-gfx] [PATCH v2 1/9] drm/i915/dp: Reset frl trained flag before restarting FRL training

[Ankit Nautiyal]

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.sha...@intel.com>
Cc: Ankit Nautiyal <ankit.k.nauti...@intel.com>
Cc: Uma Shankar <uma.shan...@intel.com> (v2)
Cc: Jani Nikula <jani.nik...@intel.com>

Signed-off-by: Ankit Nautiyal <ankit.k.nauti...@intel.com>
---
 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 d4e037450ac5..e9e5e4606d9c 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -3958,6 +3958,8 @@ 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);
        }
-- 
2.25.1