1# SPDX-License-Identifier: MIT 2 3config DRM_DISPLAY_HELPER 4 tristate "DRM Display Helpers" 5 depends on DRM 6 default y 7 help 8 DRM helpers for display adapters. 9 10config DRM_DISPLAY_DP_AUX_BUS 11 tristate "DRM DisplayPort AUX bus support" 12 depends on DRM 13 depends on OF || COMPILE_TEST 14 15config DRM_DISPLAY_DP_AUX_CEC 16 bool "Enable DisplayPort CEC-Tunneling-over-AUX HDMI support" 17 depends on DRM 18 depends on DRM_DISPLAY_HELPER 19 depends on DRM_DISPLAY_DP_HELPER 20 select CEC_CORE 21 help 22 Choose this option if you want to enable HDMI CEC support for 23 DisplayPort/USB-C to HDMI adapters. 24 25 Note: not all adapters support this feature, and even for those 26 that do support this they often do not hook up the CEC pin. 27 28config DRM_DISPLAY_DP_AUX_CHARDEV 29 bool "DRM DisplayPort AUX Interface" 30 depends on DRM 31 depends on DRM_DISPLAY_HELPER 32 depends on DRM_DISPLAY_DP_HELPER 33 help 34 Choose this option to enable a /dev/drm_dp_auxN node that allows to 35 read and write values to arbitrary DPCD registers on the DP aux 36 channel. 37 38config DRM_DISPLAY_DP_HELPER 39 bool "DRM DisplayPort Helpers" 40 depends on DRM_DISPLAY_HELPER 41 help 42 DRM display helpers for DisplayPort. 43 44config DRM_DISPLAY_DP_TUNNEL 45 bool "DRM DisplayPort tunnels support" 46 depends on DRM_DISPLAY_DP_HELPER 47 help 48 Enable support for DisplayPort tunnels. This allows drivers to use 49 DP tunnel features like the Bandwidth Allocation mode to maximize the 50 BW utilization for display streams on Thunderbolt links. 51 52config DRM_DISPLAY_DP_TUNNEL_STATE_DEBUG 53 bool "Enable debugging the DP tunnel state" 54 depends on REF_TRACKER 55 depends on DRM_DISPLAY_DP_TUNNEL 56 depends on DEBUG_KERNEL 57 depends on EXPERT 58 help 59 Enables debugging the DP tunnel manager's state, including the 60 consistency of all managed tunnels' reference counting and the state of 61 streams contained in tunnels. 62 63 If in doubt, say "N". 64 65config DRM_DISPLAY_HDCP_HELPER 66 bool "DRM HDCD Helpers" 67 depends on DRM_DISPLAY_HELPER 68 help 69 DRM display helpers for HDCP. 70 71config DRM_DISPLAY_HDMI_HELPER 72 bool "DRM HDMI Helpers" 73 depends on DRM_DISPLAY_HELPER 74 help 75 DRM display helpers for HDMI. 76