From: Ville Syrjälä Date: Thu, 4 Apr 2024 21:34:27 +0000 (+0300) Subject: drm/i915: Disable port sync when bigjoiner is used X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=b37e1347b991459c38c56ec2476087854a4f720b;p=users%2Fjedix%2Flinux-maple.git drm/i915: Disable port sync when bigjoiner is used 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 Reviewed-by: Vandita Kulkarni Link: https://patchwork.freedesktop.org/patch/msgid/20240404213441.17637-4-ville.syrjala@linux.intel.com Signed-off-by: Ville Syrjälä --- diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 8a4dfd561c34..793ef3e387c6 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -4243,7 +4243,12 @@ static bool m_n_equal(const struct intel_link_m_n *m_n_1, static bool crtcs_port_sync_compatible(const struct intel_crtc_state *crtc_state1, const struct intel_crtc_state *crtc_state2) { + /* + * FIXME the modeset sequence is currently wrong and + * can't deal with bigjoiner + port sync at the same time. + */ return crtc_state1->hw.active && crtc_state2->hw.active && + !crtc_state1->bigjoiner_pipes && !crtc_state2->bigjoiner_pipes && crtc_state1->output_types == crtc_state2->output_types && crtc_state1->output_format == crtc_state2->output_format && crtc_state1->lane_count == crtc_state2->lane_count &&