On Mon, Dec 16, 2019 at 11:13:09AM -0800, Manasi Navare wrote: > On Mon, Dec 16, 2019 at 04:37:38PM +0200, Ville Syrjälä wrote: > > On Wed, Dec 11, 2019 at 01:14:23PM -0800, Manasi Navare wrote: > > > In case of tiled displays, all the tiles are linke dto each other > > > for transcoder port sync. So in intel_atomic_check() we need to make > > > sure that we add all the tiles to the modeset and if one of the > > > tiles needs a full modeset then mark all other tiles for a full modeset. > > > > > > Suggested-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > > Cc: José Roberto de Souza <jose.souza@xxxxxxxxx> > > > Bugzilla: https://gitlab.freedesktop.org/drm/intel/issues/5 > > > Signed-off-by: Manasi Navare <manasi.d.navare@xxxxxxxxx> > > > --- > > > drivers/gpu/drm/i915/display/intel_display.c | 78 ++++++++++++++++++++ > > > 1 file changed, 78 insertions(+) > > > > > > diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c > > > index 803993a01ca7..7263eaa66cda 100644 > > > --- a/drivers/gpu/drm/i915/display/intel_display.c > > > +++ b/drivers/gpu/drm/i915/display/intel_display.c > > > @@ -14066,6 +14066,80 @@ static int intel_atomic_check_crtcs(struct intel_atomic_state *state) > > > return 0; > > > } > > > > > > +static int > > > +intel_dp_modeset_all_tiles(struct drm_i915_private *dev_priv, > > > + struct intel_atomic_state *state, int tile_grp_id) > > > +{ > > > + struct drm_connector *conn_iter; > > > + struct drm_connector_list_iter conn_list_iter; > > > + struct drm_crtc_state *crtc_state; > > > + > > > + drm_connector_list_iter_begin(&dev_priv->drm, &conn_list_iter); > > > + drm_for_each_connector_iter(conn_iter, &conn_list_iter) { > > > + struct drm_connector_state *conn_iter_state; > > > + > > > + if (!conn_iter->has_tile) > > > + continue; > > > + conn_iter_state = drm_atomic_get_connector_state(&state->base, > > > + conn_iter); > > > + if (IS_ERR(conn_iter_state)) { > > > + drm_connector_list_iter_end(&conn_list_iter); > > > + return PTR_ERR(conn_iter_state); > > > + } > > > + > > > + if (!conn_iter_state->crtc) > > > + continue; > > > + > > > + if (conn_iter->tile_group->id != tile_grp_id) > > > + continue; > > > + > > > + crtc_state = drm_atomic_get_crtc_state(&state->base, conn_iter_state->crtc); > > > + if (IS_ERR(crtc_state)) { > > > + drm_connector_list_iter_end(&conn_list_iter); > > > + return PTR_ERR(conn_iter_state); > > > + } > > > + crtc_state->mode_changed = true; > > > + } > > > + drm_connector_list_iter_end(&conn_list_iter); > > > + > > > + return 0; > > > +} > > > + > > > +static int > > > +intel_dp_atomic_trans_port_sync_check(struct drm_i915_private *dev_priv, > > > + struct intel_atomic_state *state) > > > +{ > > > + struct drm_connector *connector; > > > + struct drm_crtc_state *crtc_state; > > > + struct drm_connector_state *connector_state; > > > + int i, ret, tile_grp_id = 0; > > > + > > > + if (INTEL_GEN(dev_priv) < 11) > > > + return 0; > > > + > > > + /* Is tiled, mark all other tiled CRTCs as needing a modeset */ > > > + for_each_new_connector_in_state(&state->base, connector, connector_state, i) { > > > + if (!connector->has_tile) > > > + continue; > > > + if (connector_state->crtc && > > > + tile_grp_id != connector->tile_group->id) { > > > + crtc_state = drm_atomic_get_new_crtc_state(&state->base, > > > + connector_state->crtc); > > > + if (!drm_atomic_crtc_needs_modeset(crtc_state)) > > > + continue; > > > + > > > + tile_grp_id = connector->tile_group->id; > > > + } else > > > + continue; > > > + > > > + ret = intel_dp_modeset_all_tiles(dev_priv, state, tile_grp_id); > > > + if (ret) > > > + return ret; > > > + } > > > + > > > + return 0; > > > +} > > > > BTW after some more pondering I don't think this alone is sufficient. > > The tile information may have already disppeared so I believe we also > > need to make sure we mark all currently synced crtcs as needing a > > modeset if any of them need a modeset. And I guess that's pretty much > > the same function we'll need to handle fastset correctly. > > > > The crtcs in the current state get synced and master/slave assignments happen in icl_add_sync_mode_crtcs before compute_config call > So are you suggesting basically moving this function after the crtcs are synced and then just setting modeset > to true for all synced crtcs if one of them needs modeset? I think it should look something like: modeset_tiled_things(); modeset_synced_things(); for_each() { modeset_pipes_config(); if (can_fastset()) { modeset=false; fastset=true; } } modeset_synced_things(); for_each() { if (!modeset && fastset) copy_state(); } > > And why would the tile information be disappeared? It'll get updated whenever someone does a getconnector() or whatever. Example: 1. sync pipe A and B, pipe A is master 2. swap pipe B display for something else 3. getconnector() -> tile info goes poof 4. do something on pipe A that needs a modeset no tile info so we miss that pipe B also needs a modeset -- Ville Syrjälä Intel _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
