linux-stable/sound/pci/rme9652
Jasmin Fazlic da2a040ee7 ALSA: hdsp: hardware output loopback
Output loopback is a feature where you can record what you hear.
The HDSP series of the RME interfaces provides this functionality
at the hardware level and this patch exposes controls to enable or
disable it per output (playback) channel.

This probably works on other cards but due to a lack of hardware
it is only tested and enabled for the HDSP9632 card with this patch.

Should this patch be accepted a separate patch will be posted to
https://github.com/alsa-project/alsa-tools/tree/master/hdspmixer
which adds "LPBK" buttons to each output in the playback strip for
the user to be able to control this feature from the user land.
Users from Windows tool TotalMixFX should be familiar with this.

Signed-off-by: Jasmin Fazlic <superfassl@gmail.com>
Link: https://lore.kernel.org/r/95cb3117-e85a-51a6-c2ce-bf736e70fc4c@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-02 10:34:27 +01:00
..
hdsp.c ALSA: hdsp: hardware output loopback 2021-02-02 10:34:27 +01:00
hdspm.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rme9652.c ALSA: remove unneeded break 2020-10-26 15:27:13 +01:00