drm_encoder_helper_add
drm_encoder_helper_add(&sc->sc_encoder, &rkanxdp_encoder_helper_funcs);
drm_encoder_helper_add(&sc->sc_encoder, &rkdwhdmi_encoder_helper_funcs);
drm_encoder_helper_add(encoder, &dce_v10_0_dac_helper_funcs);
drm_encoder_helper_add(encoder, &dce_v10_0_dig_helper_funcs);
drm_encoder_helper_add(encoder, &dce_v10_0_ext_helper_funcs);
drm_encoder_helper_add(encoder, &dce_v6_0_dac_helper_funcs);
drm_encoder_helper_add(encoder, &dce_v6_0_dig_helper_funcs);
drm_encoder_helper_add(encoder, &dce_v6_0_ext_helper_funcs);
drm_encoder_helper_add(encoder, &dce_v8_0_dac_helper_funcs);
drm_encoder_helper_add(encoder, &dce_v8_0_dig_helper_funcs);
drm_encoder_helper_add(encoder, &dce_v8_0_ext_helper_funcs);
drm_encoder_helper_add(&aencoder->base, &amdgpu_dm_encoder_helper_funcs);
drm_encoder_helper_add(encoder, &amdgpu_dm_encoder_helper_funcs);
drm_encoder_helper_add(encoder, &radeon_atom_dig_helper_funcs);
drm_encoder_helper_add(encoder, &radeon_atom_dac_helper_funcs);
drm_encoder_helper_add(encoder, &radeon_atom_dac_helper_funcs);
drm_encoder_helper_add(encoder, &radeon_atom_dig_helper_funcs);
drm_encoder_helper_add(encoder, &radeon_atom_ext_helper_funcs);
drm_encoder_helper_add(encoder, &radeon_legacy_lvds_helper_funcs);
drm_encoder_helper_add(encoder, &radeon_legacy_tmds_int_helper_funcs);
drm_encoder_helper_add(encoder, &radeon_legacy_primary_dac_helper_funcs);
drm_encoder_helper_add(encoder, &radeon_legacy_tv_dac_helper_funcs);
drm_encoder_helper_add(encoder, &radeon_legacy_tmds_ext_helper_funcs);