diff options
| author | Imre Deak <imre.deak@intel.com> | 2024-06-10 19:49:20 +0300 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2024-06-13 21:26:49 +0300 |
| commit | 5bd3e7ea8854601866bac507b3cdda5fd3a29c15 (patch) | |
| tree | d915b792c099a937eac8579afd8172521f7b5c11 /drivers/gpu/drm/i915/display/intel_dp_link_training.c | |
| parent | 3b3be899fc81d5957c5dba8907263b52d92993ed (diff) | |
| download | linux-5bd3e7ea8854601866bac507b3cdda5fd3a29c15.tar.gz linux-5bd3e7ea8854601866bac507b3cdda5fd3a29c15.tar.bz2 linux-5bd3e7ea8854601866bac507b3cdda5fd3a29c15.zip | |
drm/i915/dp: Reduce link params only after retrying with unchanged params
Try to maintain the current link parameters by retrying the link
training with unchanged link parameters before reducing these parameters
(sending an uevent to userspace to retrain the link instead).
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240610164933.2947366-9-imre.deak@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dp_link_training.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp_link_training.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c index 1164255cf5f2..8caf740e642f 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c @@ -1487,10 +1487,13 @@ void intel_dp_start_link_train(struct intel_dp *intel_dp, passed = intel_dp_link_train_all_phys(intel_dp, crtc_state, lttpr_count); if (passed) { + intel_dp->link.seq_train_failures = 0; intel_encoder_link_check_queue_work(encoder, 2000); return; } + intel_dp->link.seq_train_failures++; + /* * Ignore the link failure in CI * @@ -1508,6 +1511,11 @@ void intel_dp_start_link_train(struct intel_dp *intel_dp, return; } + if (intel_dp->link.seq_train_failures < 2) { + intel_encoder_link_check_queue_work(encoder, 0); + return; + } + intel_dp_schedule_fallback_link_training(intel_dp, crtc_state); } |