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drm/i915/mst: Reject FEC+MST on ICL

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[ Upstream commit 99f855082f228cdcecd6ab768d3b8b505e0eb028 ]

ICL supposedly doesn't support FEC on MST. Reject it.

Cc: stable@vger.kernel.org
Fixes: d51f25eb479a ("drm/i915: Add DSC support to MST path")
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240402135148.23011-7-ville.syrjala@linux.intel.com
(cherry picked from commit b648ce2a28ba83c4fa67c61fcc5983e15e9d4afb)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ville Syrjälä 2024-04-02 16:51:47 +03:00 committed by Greg Kroah-Hartman
parent 6b625d2743
commit 6711b0817a
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/display/intel_dp.c
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@ -1316,7 +1316,8 @@ static bool intel_dp_source_supports_fec(struct intel_dp *intel_dp,
if (DISPLAY_VER(dev_priv) >= 12)
return true;
if (DISPLAY_VER(dev_priv) == 11 && encoder->port != PORT_A)
if (DISPLAY_VER(dev_priv) == 11 && encoder->port != PORT_A &&
!intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DP_MST))
return true;
return false;