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drm/i915: Disable port sync when bigjoiner is used
commit0653d50140
upstream. The current modeset sequence can't handle port sync and bigjoiner at the same time. Refuse port sync when bigjoiner is needed, at least until we fix the modeset sequence. v2: Add a FIXME (Vandite) Cc: stable@vger.kernel.org Tested-by: Vidya Srinivas <vidya.srinivas@intel.com> Reviewed-by: Vandita Kulkarni <vandita.kulkarni@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240404213441.17637-4-ville.syrjala@linux.intel.com Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (cherry picked from commitb37e1347b9
) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -4229,7 +4229,12 @@ static bool m_n_equal(const struct intel_link_m_n *m_n_1,
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static bool crtcs_port_sync_compatible(const struct intel_crtc_state *crtc_state1,
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const struct intel_crtc_state *crtc_state2)
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{
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/*
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* FIXME the modeset sequence is currently wrong and
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* can't deal with bigjoiner + port sync at the same time.
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*/
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return crtc_state1->hw.active && crtc_state2->hw.active &&
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!crtc_state1->bigjoiner_pipes && !crtc_state2->bigjoiner_pipes &&
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crtc_state1->output_types == crtc_state2->output_types &&
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crtc_state1->output_format == crtc_state2->output_format &&
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crtc_state1->lane_count == crtc_state2->lane_count &&
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