1# SPDX-License-Identifier: MIT 2 3config DRM_DISPLAY_HELPER 4 tristate 5 depends on DRM 6 help 7 DRM helpers for display adapters. 8 9config DRM_DISPLAY_DP_AUX_BUS 10 tristate 11 depends on DRM 12 depends on OF || COMPILE_TEST 13 14config DRM_DISPLAY_DP_AUX_CEC 15 bool "Enable DisplayPort CEC-Tunneling-over-AUX HDMI support" 16 depends on DRM && DRM_DISPLAY_HELPER 17 select DRM_DISPLAY_DP_HELPER 18 select CEC_CORE 19 help 20 Choose this option if you want to enable HDMI CEC support for 21 DisplayPort/USB-C to HDMI adapters. 22 23 Note: not all adapters support this feature, and even for those 24 that do support this they often do not hook up the CEC pin. 25 26config DRM_DISPLAY_DP_AUX_CHARDEV 27 bool "DRM DP AUX Interface" 28 depends on DRM && DRM_DISPLAY_HELPER 29 select DRM_DISPLAY_DP_HELPER 30 help 31 Choose this option to enable a /dev/drm_dp_auxN node that allows to 32 read and write values to arbitrary DPCD registers on the DP aux 33 channel. 34 35config DRM_DISPLAY_DP_HELPER 36 bool 37 depends on DRM_DISPLAY_HELPER 38 help 39 DRM display helpers for DisplayPort. 40 41config DRM_DISPLAY_DP_TUNNEL 42 bool 43 select DRM_DISPLAY_DP_HELPER 44 help 45 Enable support for DisplayPort tunnels. This allows drivers to use 46 DP tunnel features like the Bandwidth Allocation mode to maximize the 47 BW utilization for display streams on Thunderbolt links. 48 49config DRM_DISPLAY_DP_TUNNEL_STATE_DEBUG 50 bool "Enable debugging the DP tunnel state" 51 depends on REF_TRACKER 52 depends on DRM_DISPLAY_DP_TUNNEL 53 depends on DEBUG_KERNEL 54 depends on EXPERT 55 help 56 Enables debugging the DP tunnel manager's state, including the 57 consistency of all managed tunnels' reference counting and the state of 58 streams contained in tunnels. 59 60 If in doubt, say "N". 61 62config DRM_DISPLAY_HDCP_HELPER 63 bool 64 depends on DRM_DISPLAY_HELPER 65 help 66 DRM display helpers for HDCP. 67 68config DRM_DISPLAY_HDMI_HELPER 69 bool 70 depends on DRM_DISPLAY_HELPER 71 help 72 DRM display helpers for HDMI. 73 74config DRM_DISPLAY_HDMI_STATE_HELPER 75 bool 76 depends on DRM_DISPLAY_HELPER 77 select DRM_DISPLAY_HDMI_HELPER 78 help 79 DRM KMS state helpers for HDMI. 80