[Sound-open-firmware] [PTACH RFC 0/5] Add switch widget for loopback

[Pierre-Louis Bossart]

On 5/30/18 4:51 AM, Xiuli Pan wrote:
> From: Pan Xiuli <xiuli.pan at linux.intel.com>
> 
> Have some clean up for the code may used.
> Add some macros that are needed for the switch widget.
> TODO: Have the useable get/put function for the kcontrol.
> 
> Pan Xiuli (5):
>    topology: mixer: Add CONTROLMIXER_MIN
>    topology: utils: Add kdapm macro for route with kcontrol
>    topology: m4: add switch widget
>    topology: sof: add pipeline loopback dai
>    topology: test: add loopback test topology

What do you mean by "loopback"?
a) enabling capture on SSP with hardware LBM (LoopBackMode) - mirroring 
the playback data?
b) enabling a capture-to-playback hostless pipeline - mirroring the 
capture data?


> 
>   topology/m4/mixercontrol.m4               | 16 ++++--
>   topology/m4/switch.m4                     | 46 +++++++++++++++
>   topology/m4/utils.m4                      |  4 ++
>   topology/sof/pipe-dai-loopback.m4         | 36 ++++++++++++
>   topology/sof/pipe-low-latency-capture.m4  |  3 +-
>   topology/sof/pipe-low-latency-playback.m4 |  2 +
>   topology/sof/pipe-pcm-media.m4            |  1 +
>   topology/sof/pipe-tone.m4                 |  2 +
>   topology/sof/pipe-volume-capture.m4       |  1 +
>   topology/sof/pipe-volume-playback.m4      |  1 +
>   topology/test/test-loopback-ssp.m4        | 94 +++++++++++++++++++++++++++++++
>   topology/test/tplg-build.sh               |  2 +-
>   12 files changed, 201 insertions(+), 7 deletions(-)
>   create mode 100644 topology/m4/switch.m4
>   create mode 100644 topology/sof/pipe-dai-loopback.m4
>   create mode 100644 topology/test/test-loopback-ssp.m4
>