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# SPDX-License-Identifier: MIT
config DRM_DISPLAY_HELPER
tristate
depends on DRM
help
DRM helpers for display adapters.
config DRM_DISPLAY_DP_AUX_BUS
tristate
depends on DRM
depends on OF || COMPILE_TEST
config DRM_DISPLAY_DP_AUX_CEC
bool "Enable DisplayPort CEC-Tunneling-over-AUX HDMI support"
depends on DRM && DRM_DISPLAY_HELPER
select DRM_DISPLAY_DP_HELPER
select CEC_CORE
help
Choose this option if you want to enable HDMI CEC support for
DisplayPort/USB-C to HDMI adapters.
Note: not all adapters support this feature, and even for those
that do support this they often do not hook up the CEC pin.
config DRM_DISPLAY_DP_AUX_CHARDEV
bool "DRM DP AUX Interface"
depends on DRM && DRM_DISPLAY_HELPER
select DRM_DISPLAY_DP_HELPER
help
Choose this option to enable a /dev/drm_dp_auxN node that allows to
read and write values to arbitrary DPCD registers on the DP aux
channel.
config DRM_DISPLAY_DP_HELPER
bool
depends on DRM_DISPLAY_HELPER
help
DRM display helpers for DisplayPort.
config DRM_DISPLAY_DP_TUNNEL
bool
select DRM_DISPLAY_DP_HELPER
help
Enable support for DisplayPort tunnels. This allows drivers to use
DP tunnel features like the Bandwidth Allocation mode to maximize the
BW utilization for display streams on Thunderbolt links.
config DRM_DISPLAY_DP_TUNNEL_STATE_DEBUG
bool "Enable debugging the DP tunnel state"
depends on REF_TRACKER
depends on DRM_DISPLAY_DP_TUNNEL
depends on DEBUG_KERNEL
depends on EXPERT
help
Enables debugging the DP tunnel manager's state, including the
consistency of all managed tunnels' reference counting and the state of
streams contained in tunnels.
If in doubt, say "N".
config DRM_DISPLAY_HDCP_HELPER
bool
depends on DRM_DISPLAY_HELPER
help
DRM display helpers for HDCP.
config DRM_DISPLAY_HDMI_HELPER
bool
depends on DRM_DISPLAY_HELPER
help
DRM display helpers for HDMI.
config DRM_DISPLAY_HDMI_STATE_HELPER
bool
depends on DRM_DISPLAY_HELPER
select DRM_DISPLAY_HDMI_HELPER
help
DRM KMS state helpers for HDMI.
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