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drm/i915/dp_mst: Disable Panel Replay

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Disable Panel Replay on MST links until it's properly implemented. For
instance the required VSC SDP is not programmed on MST and FEC is not
enabled if Panel Replay is enabled.

Fixes: 3257e55d3e ("drm/i915/panelreplay: enable/disable panel replay")
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/15174
Cc: Jouni Högander <jouni.hogander@intel.com>
Cc: Animesh Manna <animesh.manna@intel.com>
Cc: stable@vger.kernel.org # v6.8+
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20251107124141.911895-1-imre.deak@intel.com
This commit is contained in:
Imre Deak 2025-11-07 14:41:41 +02:00
parent fa4aa0b271
commit e109f644b8
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/display/intel_psr.c
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@ -625,6 +625,10 @@ static void _panel_replay_init_dpcd(struct intel_dp *intel_dp)
struct intel_display *display = to_intel_display(intel_dp);
int ret;
/* TODO: Enable Panel Replay on MST once it's properly implemented. */
if (intel_dp->mst_detect == DRM_DP_MST)
return;
ret = drm_dp_dpcd_read_data(&intel_dp->aux, DP_PANEL_REPLAY_CAP_SUPPORT,
&intel_dp->pr_dpcd, sizeof(intel_dp->pr_dpcd));
if (ret < 0)