Check if fastset is allowed by external dependencies like other pipes and transcoders. Right now it only forces a fullmodeset when the MST master transcoder did not changed but the pipe of the master transcoder needs a fullmodeset so all slaves also needs to do a fullmodeset. But it will probably be need for port sync as well. Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx> Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_display.c | 41 ++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 4dc48e79d14b..9729f0b299b3 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -13930,11 +13930,52 @@ static int calc_watermark_data(struct intel_atomic_state *state) return 0; } +/** + * Check if fastset is allowed by external dependencies like other pipes and + * transcoders. + * + * Right now it only forces a fullmodeset when the MST master transcoder did + * not changed but the pipe of the master transcoder needs a fullmodeset so + * all slaves also needs to do a fullmodeset. + */ +static bool +intel_crtc_check_external_dependencies_fastset(const struct intel_crtc_state *old_crtc_state, + struct intel_crtc_state *new_crtc_state) +{ + struct intel_atomic_state *state = to_intel_atomic_state(new_crtc_state->uapi.state); + struct drm_i915_private *dev_priv = to_i915(new_crtc_state->uapi.crtc->dev); + struct intel_crtc_state *new_crtc_state_iter; + struct intel_crtc *crtc_iter; + int i; + + if (INTEL_GEN(dev_priv) < 12) + return true; + + if (!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DP_MST) || + intel_dp_mst_is_master_trans(new_crtc_state)) + return true; + + for_each_new_intel_crtc_in_state(state, crtc_iter, new_crtc_state_iter, i) { + if (new_crtc_state_iter->cpu_transcoder != + new_crtc_state->mst_master_transcoder) + continue; + + return !needs_modeset(new_crtc_state_iter); + } + + DRM_ERROR("Master MST transcoder of pipe not found\n"); + return false; +} + static void intel_crtc_check_fastset(const struct intel_crtc_state *old_crtc_state, struct intel_crtc_state *new_crtc_state) { if (!intel_pipe_config_compare(old_crtc_state, new_crtc_state, true)) return; + if (!intel_crtc_check_external_dependencies_fastset(old_crtc_state, + new_crtc_state)) + return; + new_crtc_state->uapi.mode_changed = false; new_crtc_state->update_pipe = true; -- 2.24.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx