intel_audio_dump

intel_audio_dump [options]

-d
    Specify the audio device to dump. The device name/number must be available.

-f
    Write the dump output to the specified file instead of stdout.

-h
    Display help message and exit.

-r
    Dump registers.

-s
    Dump state.

-a
    Dump all available info (registers, state, ...)

The `intel_audio_dump` command is a debugging utility primarily used for capturing and analyzing audio streams and hardware state on systems equipped with Intel audio codecs. It's designed to provide detailed information useful for diagnosing audio issues, driver development, and hardware validation. The tool dumps various audio-related registers, codec status, DMA configurations, and other relevant data to the console or a file. This information helps engineers and developers understand the flow of audio data, identify potential bottlenecks, and ensure proper audio functionality. It is a low-level tool typically only used by developers and experienced users.

The output format and available options might vary slightly depending on the specific Intel audio driver and kernel version. The utility accesses hardware resources directly, so it often requires root privileges to run. Understanding the output requires in-depth knowledge of Intel audio architecture and audio driver internals.

Requires root privileges. Output interpretation needs knowledge of Intel audio internals. Options might vary depending on the kernel version and driver. The information is provided in hexadecimal format.

The register dump provides a snapshot of the values stored in various hardware registers of the Intel audio codec. These registers control various aspects of audio processing, such as volume levels, mute states, sampling rates, and DMA settings. Analyzing these values can help identify configuration errors or hardware malfunctions.

The state dump provides a summary of the current operational state of the audio hardware and driver. This includes information such as interrupt status, DMA buffer configurations, and codec synchronization settings. This is useful in tracing issues related to device communication and data transfer.

The `intel_audio_dump` command likely originated within Intel's internal development and validation teams to assist in debugging Intel audio hardware and drivers. Its public availability and evolution are tied to the open-source Intel audio driver development within the Linux kernel. The exact history is difficult to pinpoint as it's often distributed within driver packages rather than as a standalone tool. It's primarily used in kernel development and by audio engineers troubleshooting hardware-specific issues.

alsamixer(1), aplay(1), arecord(1)