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| author | Imre Deak <imre.deak@intel.com> | 2024-07-08 22:00:24 +0300 |
|---|---|---|
| committer | Tvrtko Ursulin <tursulin@ursulin.net> | 2024-07-16 08:14:26 +0000 |
| commit | d13e2a6e95e6b87f571c837c71a3d05691def9bb (patch) | |
| tree | cd2aa7a6730ad6fafbfe7c333533d646a56553b8 | |
| parent | c58c39163a7e2c4c8885c57e4e74931c7b482e53 (diff) | |
| download | linux-d13e2a6e95e6b87f571c837c71a3d05691def9bb.tar.gz linux-d13e2a6e95e6b87f571c837c71a3d05691def9bb.tar.bz2 linux-d13e2a6e95e6b87f571c837c71a3d05691def9bb.zip | |
drm/i915/dp: Reset intel_dp->link_trained before retraining the link
Regularly retraining a link during an atomic commit happens with the
given pipe/link already disabled and hence intel_dp->link_trained being
false. Ensure this also for retraining a DP SST link via direct calls to
the link training functions (vs. an actual commit as for DP MST). So far
nothing depended on this, however the next patch will depend on
link_trained==false for changing the LTTPR mode to non-transparent.
Cc: <stable@vger.kernel.org> # v5.15+
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240708190029.271247-2-imre.deak@intel.com
(cherry picked from commit a4d5ce61765c08ab364aa4b327f6739b646e6cfa)
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 3903f6ead6e6..59f11af3b0a1 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -5314,6 +5314,8 @@ static int intel_dp_retrain_link(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state); + intel_dp->link_trained = false; + intel_dp_check_frl_training(intel_dp); intel_dp_pcon_dsc_configure(intel_dp, crtc_state); intel_dp_start_link_train(NULL, intel_dp, crtc_state); |