[PATCH v2 0/5] soundwire: add static port map support

Srinivas Kandagatla
2021-03-09T14:16:33Z

In some cases, SoundWire device ports are statically mapped to Controller
ports during design, however there is no way to expose this information
to the controller. Controllers like Qualcomm ones use this info to setup
static bandwith parameters for those ports.

A generic port allocation is not possible in this cases!
This patch adds a new member m_port_map to SoundWire device so that
it can populate the static master port map and share it with controller
to be able to setup correct bandwidth parameters.

As a user of this feature this patchset also adds new bindings for
wsa881x smart speaker which has 4 ports which are statically mapped
to the 3 output and 1 input port of the controller.

Tested it on DB845c and SM8250 MTP.

thanks,
srini

Srinivas Kandagatla (5):
soundwire: add static port mapping support
soundwire: qcom: update port map allocation bit mask
soundwire: qcom: add static port map support
ASoC: dt-bindings: wsa881x: add bindings for port mapping
ASoC: codecs: wsa881x: add static port map support

.../bindings/sound/qcom,wsa881x.yaml | 9 ++++++
drivers/soundwire/qcom.c | 30 +++++++++++++++----
include/linux/soundwire/sdw.h | 2 ++
sound/soc/codecs/wsa881x.c | 5 ++++
4 files changed, 40 insertions(+), 6 deletions(-)

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2.21.0