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.syrj...@linux.intel.com> Cc: Ville Syrjälä <ville.syrj...@linux.intel.com> Cc: José Roberto de Souza <jose.so...@intel.com> Bugzilla: https://gitlab.freedesktop.org/drm/intel/issues/5 Signed-off-by: Manasi Navare <manasi.d.nav...@intel.com> --- 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; +} + /** * intel_atomic_check - validate state object * @dev: drm device @@ -14093,6 +14167,10 @@ static int intel_atomic_check(struct drm_device *dev, if (ret) goto fail; + ret = intel_dp_atomic_trans_port_sync_check(dev_priv, state); + if (ret) + goto fail; + for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { if (!needs_modeset(new_crtc_state)) { -- 2.19.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
