direct render: YesAudio: Device-1: Intel HDMI/DP LPE Audio driver: HdmiLpeAudio message: bus/chip ids unavailable Device-2: sof-bytcht rt5640 driver: SOF message: bus/chip ids unavailableSound Server-1: ALSA v: k5.15.0-43-generic running: yesSound Server-2: PulseAudio v: 15.99.1 ...
spdif是一个独立的音频驱动,接口支持alsalib中的标准接口。 2、Hdmiaudio支持rawdata和pcmdata模式。 当音频channel设置成channels=4的时候,hdmiaudio会相应设置成rawdata模式。当音频channel设置成channels=2或者1的时候,hdmiaudio会设置成pcmdata模式。Hdmiaudio是一个独立的音频驱动,接口支持alsalib中的标准接口。
4、DAI Link:音频数据链路,它指定链路用到的codec、codec_dai、cpu_dai和platform。 Linux 4.4 内核支持两种方式创建声卡:一种是通用的simple-card framework;一种是传统的编写自定义的 machine driver 来创建。 Simple card是简单通用的machine driver,如果 simple-card框架足够满足需求,可优先选择simple card 框架。
4、DAI Link:音频数据链路,它指定链路用到的codec、codec_dai、cpu_dai和platform。 Linux 4.4 内核支持两种方式创建声卡:一种是通用的simple-card framework;一种是传统的编写自定义的 machine driver 来创建。 Simple card是简单通用的machine driver,如果 simple-card框架足够满足需求,可优先选择simple card 框架。
.driver = { .name = "soc-audio", .owner = THIS_MODULE, .pm = &soc_pm_ops, }, .probe = soc_probe, .remove = soc_remove, }; static int __init snd_soc_init(void) { #ifdef CONFIG_DEBUG_FS debugfs_root = debugfs_create_dir("asoc", NULL); ...
1、alsa-driver:alsa系统驱动。 2、alsa-lib:alsa库,用户空间调用,和内核空间交互。 3、alsa-utils:命令行工具。 4、alsa-plugin:alsa插件。 5、alsa-tools:alsa工具。 ALSA框架组成如下: alsa-driver中相关功能如下(以rockchip 4a单板为例): 1、Codec:音频芯片共有的部分,包括codec初始化函数,控制接口,寄存器...
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Trinity HDMI Audio Controller 00:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Root Port 00:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family...
The driver supports audio via HDMI as well by implementing a ASoC codec driver. This again allows to reuse the driver for a varieties of different platforms. Source Code Status SourceMainlined? gitYes Files FunctionFile driverdrivers/gpu/drm/bridge/adv7511/adv7511_drv.c ...
Alder Lake PCH-P High Definition Audio Controller HDMI / DisplayPort 1 Output [vol: 1.00] │ 50. Alder Lake PCH-P High Definition Audio Controller Headphones + Speakers [vol: 1.00] │ ├─ Sink endpoints: │ ├─ Sources: │ * 51. Alder Lake PCH-P High Definition Audio Controller Digit...
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Trinity HDMI Audio Controller 00:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Root Port 00:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Proce...