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15175a4f2b
Implement HDA keep alive (KAE) support for Intel display codecs. When no
audio stream is active, the display codec will provide a continuous clock
and a valid but silent audio stream to any connected HDMI/DP receiver.
Without this, upon starting a new playback stream, initial samples may be
lost as many receivers require time to initialize for new clock.
This is a new feature in Intel AlderLake-P display codec implementation
and replaces the Intel i915 silent-stream extension that has been used
on older hardware. Main benefit of the new method is that codec no longer
needs to be kept in D0 power state.
This patch depends on commit 112a87c48e ("drm/i915/display: program
audio CDCLK-TS for keepalives").
[ a minor coding-style fix by tiwai ]
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Jyri Sarha <jyri.sarha@intel.com>
Link: https://lore.kernel.org/r/20220216172405.3994959-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
302 lines
9.4 KiB
Plaintext
302 lines
9.4 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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menu "HD-Audio"
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config SND_HDA
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tristate
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select SND_PCM
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select SND_VMASTER
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select SND_JACK
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select SND_HDA_CORE
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config SND_HDA_GENERIC_LEDS
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bool
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config SND_HDA_INTEL
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tristate "HD Audio PCI"
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depends on SND_PCI
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select SND_HDA
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select SND_INTEL_DSP_CONFIG
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help
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Say Y here to include support for Intel "High Definition
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Audio" (Azalia) and its compatible devices.
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This option enables the HD-audio controller. Don't forget
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to choose the appropriate codec options below.
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To compile this driver as a module, choose M here: the module
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will be called snd-hda-intel.
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config SND_HDA_TEGRA
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tristate "NVIDIA Tegra HD Audio"
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depends on ARCH_TEGRA
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select SND_HDA
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select SND_HDA_ALIGNED_MMIO
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help
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Say Y here to support the HDA controller present in NVIDIA
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Tegra SoCs
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This options enables support for the HD Audio controller
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present in some NVIDIA Tegra SoCs, used to communicate audio
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to the HDMI output.
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To compile this driver as a module, choose M here: the module
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will be called snd-hda-tegra.
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if SND_HDA
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config SND_HDA_HWDEP
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bool "Build hwdep interface for HD-audio driver"
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select SND_HWDEP
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help
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Say Y here to build a hwdep interface for HD-audio driver.
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This interface can be used for out-of-band communication
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with codecs for debugging purposes.
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config SND_HDA_RECONFIG
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bool "Allow dynamic codec reconfiguration"
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help
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Say Y here to enable the HD-audio codec re-configuration feature.
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It allows user to clear the whole codec configuration, change the
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codec setup, add extra verbs, and re-configure the codec dynamically.
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Note that this item alone doesn't provide the sysfs interface, but
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enables the feature just for the patch loader below.
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If you need the traditional sysfs entries for the manual interaction,
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turn on CONFIG_SND_HDA_HWDEP as well.
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config SND_HDA_INPUT_BEEP
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bool "Support digital beep via input layer"
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depends on INPUT=y || INPUT=SND_HDA
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help
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Say Y here to build a digital beep interface for HD-audio
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driver. This interface is used to generate digital beeps.
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config SND_HDA_INPUT_BEEP_MODE
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int "Digital beep registration mode (0=off, 1=on)"
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depends on SND_HDA_INPUT_BEEP=y
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default "1"
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range 0 1
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help
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Set 0 to disable the digital beep interface for HD-audio by default.
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Set 1 to always enable the digital beep interface for HD-audio by
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default.
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config SND_HDA_PATCH_LOADER
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bool "Support initialization patch loading for HD-audio"
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select FW_LOADER
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select SND_HDA_RECONFIG
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help
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Say Y here to allow the HD-audio driver to load a pseudo
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firmware file ("patch") for overriding the BIOS setup at
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start up. The "patch" file can be specified via patch module
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option, such as patch=hda-init.
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config SND_HDA_SCODEC_CS35L41
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tristate
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config SND_HDA_SCODEC_CS35L41_I2C
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tristate "Build CS35L41 HD-audio side codec support for I2C Bus"
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depends on I2C
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depends on ACPI
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depends on SND_SOC
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select SND_HDA_GENERIC
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select SND_SOC_CS35L41_LIB
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select SND_HDA_SCODEC_CS35L41
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help
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Say Y or M here to include CS35L41 I2C HD-audio side codec support
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in snd-hda-intel driver, such as ALC287.
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comment "Set to Y if you want auto-loading the side codec driver"
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depends on SND_HDA=y && SND_HDA_SCODEC_CS35L41_I2C=m
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config SND_HDA_SCODEC_CS35L41_SPI
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tristate "Build CS35L41 HD-audio codec support for SPI Bus"
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depends on SPI_MASTER
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depends on ACPI
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depends on SND_SOC
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select SND_HDA_GENERIC
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select SND_SOC_CS35L41_LIB
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select SND_HDA_SCODEC_CS35L41
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help
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Say Y or M here to include CS35L41 SPI HD-audio side codec support
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in snd-hda-intel driver, such as ALC287.
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comment "Set to Y if you want auto-loading the side codec driver"
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depends on SND_HDA=y && SND_HDA_SCODEC_CS35L41_SPI=m
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config SND_HDA_CODEC_REALTEK
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tristate "Build Realtek HD-audio codec support"
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select SND_HDA_GENERIC
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select SND_HDA_GENERIC_LEDS
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help
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Say Y or M here to include Realtek HD-audio codec support in
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snd-hda-intel driver, such as ALC880.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_REALTEK=m
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config SND_HDA_CODEC_ANALOG
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tristate "Build Analog Devices HD-audio codec support"
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select SND_HDA_GENERIC
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help
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Say Y or M here to include Analog Devices HD-audio codec support in
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snd-hda-intel driver, such as AD1986A.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_ANALOG=m
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config SND_HDA_CODEC_SIGMATEL
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tristate "Build IDT/Sigmatel HD-audio codec support"
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select SND_HDA_GENERIC
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select SND_HDA_GENERIC_LEDS
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help
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Say Y or M here to include IDT (Sigmatel) HD-audio codec support in
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snd-hda-intel driver, such as STAC9200.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_SIGMATEL=m
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config SND_HDA_CODEC_VIA
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tristate "Build VIA HD-audio codec support"
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select SND_HDA_GENERIC
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help
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Say Y or M here to include VIA HD-audio codec support in
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snd-hda-intel driver, such as VT1708.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_VIA=m
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config SND_HDA_CODEC_HDMI
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tristate "Build HDMI/DisplayPort HD-audio codec support"
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select SND_DYNAMIC_MINORS
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help
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Say Y or M here to include HDMI and DisplayPort HD-audio codec
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support in snd-hda-intel driver. This includes all AMD/ATI,
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Intel and Nvidia HDMI/DisplayPort codecs.
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Note that this option mandatorily enables CONFIG_SND_DYNAMIC_MINORS
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to assure the multiple streams for DP-MST support.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_HDMI=m
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config SND_HDA_CODEC_CIRRUS
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tristate "Build Cirrus Logic codec support"
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select SND_HDA_GENERIC
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help
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Say Y or M here to include Cirrus Logic codec support in
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snd-hda-intel driver, such as CS4206.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_CIRRUS=m
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config SND_HDA_CODEC_CS8409
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tristate "Build Cirrus Logic HDA bridge support"
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select SND_HDA_GENERIC
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help
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Say Y or M here to include Cirrus Logic HDA bridge support in
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snd-hda-intel driver, such as CS8409.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_CS8409=m
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config SND_HDA_CODEC_CONEXANT
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tristate "Build Conexant HD-audio codec support"
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select SND_HDA_GENERIC
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select SND_HDA_GENERIC_LEDS
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help
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Say Y or M here to include Conexant HD-audio codec support in
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snd-hda-intel driver, such as CX20549.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_CONEXANT=m
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config SND_HDA_CODEC_CA0110
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tristate "Build Creative CA0110-IBG codec support"
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select SND_HDA_GENERIC
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help
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Say Y or M here to include Creative CA0110-IBG codec support in
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snd-hda-intel driver, found on some Creative X-Fi cards.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_CA0110=m
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config SND_HDA_CODEC_CA0132
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tristate "Build Creative CA0132 codec support"
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help
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Say Y or M here to include Creative CA0132 codec support in
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snd-hda-intel driver.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_CA0132=m
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config SND_HDA_CODEC_CA0132_DSP
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bool "Support new DSP code for CA0132 codec"
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depends on SND_HDA_CODEC_CA0132
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default y
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select SND_HDA_DSP_LOADER
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select FW_LOADER
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help
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Say Y here to enable the DSP for Creative CA0132 for extended
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features like equalizer or echo cancellation.
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Note that this option requires the external firmware file
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(ctefx.bin).
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config SND_HDA_CODEC_CMEDIA
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tristate "Build C-Media HD-audio codec support"
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select SND_HDA_GENERIC
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help
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Say Y or M here to include C-Media HD-audio codec support in
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snd-hda-intel driver, such as CMI9880.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_CMEDIA=m
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config SND_HDA_CODEC_SI3054
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tristate "Build Silicon Labs 3054 HD-modem codec support"
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help
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Say Y or M here to include Silicon Labs 3054 HD-modem codec
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(and compatibles) support in snd-hda-intel driver.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_CODEC_SI3054=m
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config SND_HDA_GENERIC
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tristate "Enable generic HD-audio codec parser"
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select SND_CTL_LED if SND_HDA_GENERIC_LEDS
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select LEDS_CLASS if SND_HDA_GENERIC_LEDS
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help
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Say Y or M here to enable the generic HD-audio codec parser
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in snd-hda-intel driver.
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comment "Set to Y if you want auto-loading the codec driver"
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depends on SND_HDA=y && SND_HDA_GENERIC=m
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config SND_HDA_POWER_SAVE_DEFAULT
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int "Default time-out for HD-audio power-save mode"
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depends on PM
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default 0
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help
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The default time-out value in seconds for HD-audio automatic
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power-save mode. 0 means to disable the power-save mode.
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config SND_HDA_INTEL_HDMI_SILENT_STREAM
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bool "Enable Silent Stream always for HDMI"
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depends on SND_HDA_INTEL
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help
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Say Y to enable HD-Audio Keep Alive (KAE) aka Silent Stream
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for HDMI on hardware that supports the feature.
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When enabled, the HDMI/DisplayPort codec will continue to provide
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a continuous clock and a valid but silent data stream to
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any connected external receiver. This allows to avoid gaps
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at start of playback. Many receivers require multiple seconds
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to start playing audio after the clock has been stopped.
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This feature can impact power consumption as resources
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are kept reserved both at transmitter and receiver.
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endif
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endmenu
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