TASCAM US-16x08 mixer support for kernel driver snd-usb-audio

IMPORTANT: This code was merged upstream in Linux 4.11.

How to apply this patch.

Download the current kernel sources and required ssl library

sudo apt-get install libssl-dev cd /usr/src sudo apt-get source linux-image-$(uname -r)

Prepare kernel sources for module compilation

cd /usr/src/ cp /boot/config-$(uname -r) .config cp /usr/src/linux-headers-$(uname -r)/Module.symvers . make prepare make scripts

Apply patch file

patch --strip=1 < us16x08.path

Compile module

make M=sound/usb

Save original and installation

cp /lib/modules/$(uname -r)/kernel/sound/usb/snd-usb-audio.ko cp sound/usb/snd-usb-audio.ko /lib/modules/$(uname -r)/kernel/sound/usb/ reboot

After reboot you should be able to control the Tascam DSP (EQ/Compressor) via e.g. alsamixer/gnome-alsamixer.

Change log

Jan-05 2017:

• added new Tascam firmware v2.00 feature DSP bypass switch.
• fixed EQ initial disabled.
• fixed Comp Release initial value to 10ms.

Jan-07 2017:

• change compressor meter poll. Poll only values for channels with actice compressor.

Jul-27 2017:

• update patch file to follow version contained in kernel version 4.12