On Fri, Dec 13, 2019 at 06:28:40PM -0800, Manasi Navare wrote: > On Fri, Dec 13, 2019 at 10:05:49PM +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; > > 'connector' > > > + struct drm_connector_list_iter conn_list_iter; > > > + struct drm_crtc_state *crtc_state; > > > > crtc_state has needlessly wide scope. > > > > > + > > > + 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; > > > > 'conn_state' is the most popular name. > > > > > + > > > + 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; > > > > The tile group check should be part of the same if with the has_tile > > check. > > > > > + > > > + 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, > > > > Pointless variable. Can be extracted from the atomic state. > > > > > + 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; > > > > tile_grp_id is rather pointless. crtc_state and ret can move into > > tighter scope. And the next suggestion allows you to kill crtc_state > > entirely... > > Its not clear why tile_grp_id is pointless, I am using tile_grp_id for the first connector with has_tile > and I make sure that I dont enter into the loop to check modeset again for the connector with > same tile_grp_id because we have already set its mode changed to true in intel_dp_modeset_all_tiles() > > How can I achieve this instead? Instead of foo() { tile_grp_id = 0; for_each() { tile_grp_id = conn->tile_grp_id; intel_dp_modeset_all_tiles(tile_grp_id); } } you just do foo() { for_each() { intel_dp_modeset_all_tiles(conn->tile_grp_id); } } -- Ville Syrjälä Intel _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
