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SND_MAESTRO3(4) FreeBSD Kernel Interfaces Manual SND_MAESTRO3(4) NAME snd_maestro3 -- FreeBSD audio sub-driver for ESS Maestro3/Allegro-1 hard- ware SYNOPSIS device sound device "snd_maestro3" DESCRIPTION The snd_maestro3 driver provides support for the ESS Maestro3 and Alle- gro-1 sound chips under the PCM framework. These chips are mostly found in laptop computers and feature an AC97 mixer, a multi-channel sample rate converter that can mix up to four digital audio streams in hardware, recording support, and external volume control buttons. The firmware for the sound processor is licensed under the GNU Public License, and thus this driver is not included in the default GENERIC ker- nel, nor is it compiled into the kernel when device sound is specified in the kernel config file. A convenient way to automatically load the driver is to add the line snd_maestro3_load="YES" to the file /boot/loader.conf. DIAGNOSTICS The hardware volume control buttons can be connected to two different pin sets on the chip, depending on the manufacturer. The driver has no way of determining this configuration, so a hint may be used to override the default guess. Add the line ``hint.pcm.0.hwvol_config="0"'' to the file /boot/device.hints to override the default setting. SEE ALSO sound(4), loader.conf(5) HISTORY The snd_maestro3 driver first appeared in FreeBSD 4.3. AUTHORS Scott Long <scottl@FreeBSD.org> Darrel Anderson <anderson@cs.duke.edu> FreeBSD 11.1 August 28, 2004 FreeBSD 11.1
NAME | SYNOPSIS | DESCRIPTION | DIAGNOSTICS | SEE ALSO | HISTORY | AUTHORS
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