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The microphone arrays for Intel platforms are described in the ACPI NHLT table. This table is available in sysfs. Parse this information and use a more common format (json) for output. This information is usable for the further DSP processing. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
38 lines
815 B
Groff
38 lines
815 B
Groff
.TH NHLT-DMIC-INFO 1 "16 May 2023"
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.SH NAME
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nhlt-dmic-info \- dump microphone array information from ACPI NHLT table
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.SH SYNOPSIS
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\fBnhlt-dmic-info\fP [\fI\-option\fP]
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.SH DESCRIPTION
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\fB\fBnhlt-dmic-info\fP\fP dumps microphone array information from ACPI NHLT
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table in JSON format.
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.SH OPTIONS
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.TP
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\fI\-h\fP | \fI\-\-help\fP
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Prints the help information.
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.TP
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\fI\-f <file>\fP | \fI\-\-file=<file>\fP
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Input file with the binary ACPI NHLT table (default is \fB/sys/firmware/acpi/tables/NHLT\fR).
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.TP
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\fI\-o <file>\fP | \fI\-\-output=<file>\fP
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JSON output file (default is stdout: \fB\-\fR).
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.SH EXAMPLES
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.nf
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\fBnhlt-dmic-info \-f nhlt.bin \-o dmic.json\fR
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.ne
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.SH BUGS
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None known.
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.SH AUTHOR
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\fBnhlt-dmic-info\fP is by Jaroslav Kysela <perex@perex.cz>.
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This document is by Jaroslav Kysela <perex@perex.cz>.
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