From 0653d501409eeb9f1deb7e4c12e4d0d2c9f1cba1 Mon Sep 17 00:00:00 2001 From: Ville Syrjälä Date: Fri, 5 Apr 2024 00:34:27 +0300 Subject: drm/i915: Disable port sync when bigjoiner is used MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 (cherry picked from commit b37e1347b991459c38c56ec2476087854a4f720b) Signed-off-by: Rodrigo Vivi --- drivers/gpu/drm/i915/display/intel_ddi.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index c587a8efeafc..c17462b4c2ac 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -4256,7 +4256,12 @@ 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 && -- cgit v1.2.3