sound/hda/codecs/hdmi/Kconfig

Source file repositories/reference/linux-study-clean/sound/hda/codecs/hdmi/Kconfig

File Facts

System
Linux kernel
Corpus path
sound/hda/codecs/hdmi/Kconfig
Extension
[no extension]
Size
2984 bytes
Lines
89
Domain
Driver Families
Bucket
sound/hda
Inferred role
Driver Families: build/configuration rule
Status
atlas-only

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only

menuconfig SND_HDA_CODEC_HDMI
	tristate "HD-audio HDMI codec support"
	help
	  Say Y or M here to include HD-audio HDMI/DislayPort codec support.

	  This will enable all HDMI/DP codec drivers as default, but you can
	  enable/disable each codec driver individually, too (only when
	  CONFIG_EXPERT is set).

if SND_HDA_CODEC_HDMI

config SND_HDA_CODEC_HDMI_GENERIC
	tristate "Generic HDMI/DisplayPort HD-audio codec support" if EXPERT
	select SND_DYNAMIC_MINORS
	select SND_PCM_ELD
	default y
	help
	  Say Y or M here to include Generic HDMI and DisplayPort HD-audio
	  codec support.

	  Note that this option mandatorily enables CONFIG_SND_DYNAMIC_MINORS
	  to assure the multiple streams for DP-MST support.

config SND_HDA_CODEC_HDMI_SIMPLE
	tristate "Simple HDMI/DisplayPort HD-audio codec support" if EXPERT
	default y
	help
	  Say Y or M here to include Simple HDMI and DisplayPort HD-audio
	  codec support for VIA and other codecs.

config SND_HDA_CODEC_HDMI_INTEL
	tristate "Intel HDMI/DisplayPort HD-audio codec support" if EXPERT
	select SND_HDA_CODEC_HDMI_GENERIC
	default y
	help
	  Say Y or M here to include Intel graphics HDMI and DisplayPort
	  HD-audio codec support.

config SND_HDA_INTEL_HDMI_SILENT_STREAM
	bool "Enable Silent Stream always for HDMI"
	depends on SND_HDA_CODEC_HDMI_INTEL
	help
	  Say Y to enable HD-Audio Keep Alive (KAE) aka Silent Stream
	  for HDMI on hardware that supports the feature.

	  When enabled, the HDMI/DisplayPort codec will continue to provide
	  a continuous clock and a valid but silent data stream to
	  any connected external receiver. This allows to avoid gaps
	  at start of playback. Many receivers require multiple seconds
	  to start playing audio after the clock has been stopped.
	  This feature can impact power consumption as resources
	  are kept reserved both at transmitter and receiver.

config SND_HDA_CODEC_HDMI_ATI
	tristate "AMD/ATI HDMI/DisplayPort HD-audio codec support" if EXPERT
	select SND_HDA_CODEC_HDMI_GENERIC
	default y
	help
	  Say Y or M here to include AMD/ATI graphics HDMI and DisplayPort
	  HD-audio codec support.

config SND_HDA_CODEC_HDMI_NVIDIA
	tristate "Nvidia HDMI/DisplayPort HD-audio codec support" if EXPERT
	select SND_HDA_CODEC_HDMI_GENERIC
	default y
	help
	  Say Y or M here to include HDMI and DisplayPort HD-audio codec
	  support for the recent Nvidia graphics cards.

Annotation

Implementation Notes