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The HDMI Connectors need to perform a variety of tasks when the HDMI connector state changes. Such tasks include setting or invalidating CEC address, notifying HDMI codec driver, updating scrambler data, etc. Implementing such tasks in a driver-specific callbacks is error prone. Start implementing the generic helper function (currently handling only the HDMI Codec framework) to be used by drivers utilizing HDMI Connector framework. Reviewed-by: Maxime Ripard <mripard@kernel.org> Tested-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241224-drm-bridge-hdmi-connector-v10-6-dc89577cd438@linaro.org Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
98 lines
2.3 KiB
Plaintext
98 lines
2.3 KiB
Plaintext
# SPDX-License-Identifier: MIT
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config DRM_DISPLAY_DP_AUX_BUS
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tristate
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depends on DRM
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depends on OF
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config DRM_DISPLAY_HELPER
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tristate
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depends on DRM
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help
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DRM helpers for display adapters.
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if DRM_DISPLAY_HELPER
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config DRM_BRIDGE_CONNECTOR
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bool
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select DRM_DISPLAY_HDMI_AUDIO_HELPER
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select DRM_DISPLAY_HDMI_STATE_HELPER
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help
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DRM connector implementation terminating DRM bridge chains.
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config DRM_DISPLAY_DP_AUX_CEC
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bool "Enable DisplayPort CEC-Tunneling-over-AUX HDMI support"
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select DRM_DISPLAY_DP_HELPER
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select CEC_CORE
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help
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Choose this option if you want to enable HDMI CEC support for
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DisplayPort/USB-C to HDMI adapters.
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Note: not all adapters support this feature, and even for those
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that do support this they often do not hook up the CEC pin.
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config DRM_DISPLAY_DP_AUX_CHARDEV
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bool "DRM DP AUX Interface"
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select DRM_DISPLAY_DP_HELPER
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help
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Choose this option to enable a /dev/drm_dp_auxN node that allows to
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read and write values to arbitrary DPCD registers on the DP aux
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channel.
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config DRM_DISPLAY_DP_HELPER
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bool
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help
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DRM display helpers for DisplayPort.
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config DRM_DISPLAY_DP_TUNNEL
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bool
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select DRM_DISPLAY_DP_HELPER
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help
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Enable support for DisplayPort tunnels. This allows drivers to use
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DP tunnel features like the Bandwidth Allocation mode to maximize the
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BW utilization for display streams on Thunderbolt links.
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config DRM_DISPLAY_DP_TUNNEL_STATE_DEBUG
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bool "Enable debugging the DP tunnel state"
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depends on REF_TRACKER
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depends on DRM_DISPLAY_DP_TUNNEL
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depends on DEBUG_KERNEL
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depends on EXPERT
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help
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Enables debugging the DP tunnel manager's state, including the
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consistency of all managed tunnels' reference counting and the state of
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streams contained in tunnels.
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If in doubt, say "N".
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config DRM_DISPLAY_DSC_HELPER
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bool
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depends on DRM_DISPLAY_HELPER
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help
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DRM display helpers for VESA DSC (used by DSI and DisplayPort).
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config DRM_DISPLAY_HDCP_HELPER
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bool
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help
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DRM display helpers for HDCP.
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config DRM_DISPLAY_HDMI_AUDIO_HELPER
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bool
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help
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DRM display helpers for HDMI Audio functionality (generic HDMI Codec
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implementation).
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config DRM_DISPLAY_HDMI_HELPER
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bool
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help
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DRM display helpers for HDMI.
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config DRM_DISPLAY_HDMI_STATE_HELPER
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bool
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select DRM_DISPLAY_HDMI_AUDIO_HELPER
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select DRM_DISPLAY_HDMI_HELPER
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help
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DRM KMS state helpers for HDMI.
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endif # DRM_DISPLAY_HELPER
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