1# SPDX-License-Identifier: MIT 2 3config DRM_DP_AUX_BUS 4 tristate 5 depends on DRM 6 depends on OF 7 8config DRM_DISPLAY_HELPER 9 tristate 10 depends on DRM 11 help 12 DRM helpers for display adapters. 13 14config DRM_DISPLAY_DP_HELPER 15 bool 16 depends on DRM_DISPLAY_HELPER 17 help 18 DRM display helpers for DisplayPort. 19 20config DRM_DP_AUX_CHARDEV 21 bool "DRM DP AUX Interface" 22 depends on DRM 23 help 24 Choose this option to enable a /dev/drm_dp_auxN node that allows to 25 read and write values to arbitrary DPCD registers on the DP aux 26 channel. 27 28config DRM_DP_CEC 29 bool "Enable DisplayPort CEC-Tunneling-over-AUX HDMI support" 30 depends on DRM 31 select CEC_CORE 32 help 33 Choose this option if you want to enable HDMI CEC support for 34 DisplayPort/USB-C to HDMI adapters. 35 36 Note: not all adapters support this feature, and even for those 37 that do support this they often do not hook up the CEC pin. 38