Check if fastset is allowed by external dependencies like other pipes and transcoders.
Right now this patch only forces a fullmodeset in MST slaves of MST masters that needs a fullmodeset but it will be needed for port sync as well. v3: - moved handling to intel_atomic_check() this way is guarantee that all pipes will have its state computed v4: - added a function to return if MST master neeeds modeset to simply code in intel_atomic_check() v5: - fixed and moved code to check if MST master needs a modeset Cc: Ville Syrjälä <[email protected]> Cc: Lucas De Marchi <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Manasi Navare <[email protected]> Reviewed-by: Ville Syrjälä <[email protected]> Signed-off-by: José Roberto de Souza <[email protected]> --- drivers/gpu/drm/i915/display/intel_display.c | 70 ++++++++++++++++---- 1 file changed, 57 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 24841dde490b..11f2c13ec23e 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -13909,19 +13909,6 @@ static void intel_crtc_check_fastset(const struct intel_crtc_state *old_crtc_sta new_crtc_state->uapi.mode_changed = false; new_crtc_state->update_pipe = true; - - /* - * If we're not doing the full modeset we want to - * keep the current M/N values as they may be - * sufficiently different to the computed values - * to cause problems. - * - * FIXME: should really copy more fuzzy state here - */ - new_crtc_state->fdi_m_n = old_crtc_state->fdi_m_n; - new_crtc_state->dp_m_n = old_crtc_state->dp_m_n; - new_crtc_state->dp_m2_n2 = old_crtc_state->dp_m2_n2; - new_crtc_state->has_drrs = old_crtc_state->has_drrs; } static int intel_crtc_add_planes_to_state(struct intel_atomic_state *state, @@ -14032,6 +14019,20 @@ static int intel_atomic_check_crtcs(struct intel_atomic_state *state) return 0; } +static bool intel_cpu_transcoder_needs_modeset(struct intel_atomic_state *state, + enum transcoder transcoder) +{ + struct intel_crtc_state *new_crtc_state; + struct intel_crtc *crtc; + int i; + + for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) + if (new_crtc_state->cpu_transcoder == transcoder) + return needs_modeset(new_crtc_state); + + return false; +} + /** * intel_atomic_check - validate state object * @dev: drm device @@ -14089,6 +14090,49 @@ static int intel_atomic_check(struct drm_device *dev, any_ms = true; } + /** + * 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. + */ + for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { + enum transcoder master = new_crtc_state->mst_master_transcoder; + + if (!new_crtc_state->uapi.enable || + !intel_dp_mst_is_slave_trans(new_crtc_state) || + needs_modeset(new_crtc_state)) + continue; + + if (intel_cpu_transcoder_needs_modeset(state, master)) { + new_crtc_state->uapi.mode_changed = true; + new_crtc_state->update_pipe = false; + } + } + + for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, + new_crtc_state, i) { + if (!new_crtc_state->uapi.enable || + needs_modeset(new_crtc_state) || + !new_crtc_state->update_pipe) + continue; + + /* + * If we're not doing the full modeset we want to + * keep the current M/N values as they may be + * sufficiently different to the computed values + * to cause problems. + * + * FIXME: should really copy more fuzzy state here + */ + new_crtc_state->fdi_m_n = old_crtc_state->fdi_m_n; + new_crtc_state->dp_m_n = old_crtc_state->dp_m_n; + new_crtc_state->dp_m2_n2 = old_crtc_state->dp_m2_n2; + new_crtc_state->has_drrs = old_crtc_state->has_drrs; + } + if (any_ms && !check_digital_port_conflicts(state)) { DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n"); ret = EINVAL; -- 2.24.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
