On Tue, 2023-02-07 at 14:59 +0200, Imre Deak wrote: > Hi all, > > On Mon, Feb 06, 2023 at 01:48:53PM +0200, Imre Deak wrote: > > Add the MST topology for a CRTC to the atomic state if the driver > > needs to force a modeset on the CRTC after the encoder compute config > > functions are called. > > > > Later the MST encoder's disable hook also adds the state, but that isn't > > guaranteed to work (since in that hook getting the state may fail, which > > can't be handled there). This should fix that, while a later patch fixes > > the use of the MST state in the disable hook. > > > > v2: Add missing forward struct declartions, caught by hdrtest. > > v3: Factor out intel_dp_mst_add_topology_state_for_connector() used > > later in the patchset. > > > > Cc: Lyude Paul <lyude@xxxxxxxxxx> > > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > Cc: stable@xxxxxxxxxxxxxxx # 6.1 > > Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> # v2 > > Reviewed-by: Lyude Paul <lyude@xxxxxxxxxx> > > Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx> > > Is it ok to merge these 4 patches (also at [1]), via the i915 tree? > > If so could it be also acked from the AMD and Nouveau side? Whichever branch works best for y'all is fine by me, if it's via i915's tree I guess we might need to back-merge drm-misc at some point so I can write up equivalent fixes for nouveau as well. (Added Thomas Zimmermann to Cc) > > [1] https://patchwork.freedesktop.org/series/113703/ > > > --- > > drivers/gpu/drm/i915/display/intel_display.c | 4 ++ > > drivers/gpu/drm/i915/display/intel_dp_mst.c | 61 ++++++++++++++++++++ > > drivers/gpu/drm/i915/display/intel_dp_mst.h | 4 ++ > > 3 files changed, 69 insertions(+) > > > > diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c > > index 166662ade593c..38106cf63b3b9 100644 > > --- a/drivers/gpu/drm/i915/display/intel_display.c > > +++ b/drivers/gpu/drm/i915/display/intel_display.c > > @@ -5936,6 +5936,10 @@ int intel_modeset_all_pipes(struct intel_atomic_state *state, > > if (ret) > > return ret; > > > > + ret = intel_dp_mst_add_topology_state_for_crtc(state, crtc); > > + if (ret) > > + return ret; > > + > > ret = intel_atomic_add_affected_planes(state, crtc); > > if (ret) > > return ret; > > diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c > > index 8b0e4defa3f10..f3cb12dcfe0a7 100644 > > --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c > > +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c > > @@ -1223,3 +1223,64 @@ bool intel_dp_mst_is_slave_trans(const struct intel_crtc_state *crtc_state) > > return crtc_state->mst_master_transcoder != INVALID_TRANSCODER && > > crtc_state->mst_master_transcoder != crtc_state->cpu_transcoder; > > } > > + > > +/** > > + * intel_dp_mst_add_topology_state_for_connector - add MST topology state for a connector > > + * @state: atomic state > > + * @connector: connector to add the state for > > + * @crtc: the CRTC @connector is attached to > > + * > > + * Add the MST topology state for @connector to @state. > > + * > > + * Returns 0 on success, negative error code on failure. > > + */ > > +static int > > +intel_dp_mst_add_topology_state_for_connector(struct intel_atomic_state *state, > > + struct intel_connector *connector, > > + struct intel_crtc *crtc) > > +{ > > + struct drm_dp_mst_topology_state *mst_state; > > + > > + if (!connector->mst_port) > > + return 0; > > + > > + mst_state = drm_atomic_get_mst_topology_state(&state->base, > > + &connector->mst_port->mst_mgr); > > + if (IS_ERR(mst_state)) > > + return PTR_ERR(mst_state); > > + > > + mst_state->pending_crtc_mask |= drm_crtc_mask(&crtc->base); > > + > > + return 0; > > +} > > + > > +/** > > + * intel_dp_mst_add_topology_state_for_crtc - add MST topology state for a CRTC > > + * @state: atomic state > > + * @crtc: CRTC to add the state for > > + * > > + * Add the MST topology state for @crtc to @state. > > + * > > + * Returns 0 on success, negative error code on failure. > > + */ > > +int intel_dp_mst_add_topology_state_for_crtc(struct intel_atomic_state *state, > > + struct intel_crtc *crtc) > > +{ > > + struct drm_connector *_connector; > > + struct drm_connector_state *conn_state; > > + int i; > > + > > + for_each_new_connector_in_state(&state->base, _connector, conn_state, i) { > > + struct intel_connector *connector = to_intel_connector(_connector); > > + int ret; > > + > > + if (conn_state->crtc != &crtc->base) > > + continue; > > + > > + ret = intel_dp_mst_add_topology_state_for_connector(state, connector, crtc); > > + if (ret) > > + return ret; > > + } > > + > > + return 0; > > +} > > diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.h b/drivers/gpu/drm/i915/display/intel_dp_mst.h > > index f7301de6cdfb3..f1815bb722672 100644 > > --- a/drivers/gpu/drm/i915/display/intel_dp_mst.h > > +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.h > > @@ -8,6 +8,8 @@ > > > > #include <linux/types.h> > > > > +struct intel_atomic_state; > > +struct intel_crtc; > > struct intel_crtc_state; > > struct intel_digital_port; > > struct intel_dp; > > @@ -18,5 +20,7 @@ int intel_dp_mst_encoder_active_links(struct intel_digital_port *dig_port); > > bool intel_dp_mst_is_master_trans(const struct intel_crtc_state *crtc_state); > > bool intel_dp_mst_is_slave_trans(const struct intel_crtc_state *crtc_state); > > bool intel_dp_mst_source_support(struct intel_dp *intel_dp); > > +int intel_dp_mst_add_topology_state_for_crtc(struct intel_atomic_state *state, > > + struct intel_crtc *crtc); > > > > #endif /* __INTEL_DP_MST_H__ */ > > -- > > 2.37.1 > > > -- Cheers, Lyude Paul (she/her) Software Engineer at Red Hat
