Commit e109f644 authored by Imre Deak's avatar Imre Deak
Browse files

drm/i915/dp_mst: Disable Panel Replay 

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: 3257e55d ("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: default avatarJouni Högander <jouni.hogander@intel.com>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20251107124141.911895-1-imre.deak@intel.com
parent fa4aa0b2

drivers/gpu/drm/i915/display/intel_psr.c

+4 −0
Original line number Diff line number Diff line
@@ -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)