The existing stream support works fine with simple cases, but does not map well with ALSA transitions for underflows/resume where prepare() can be called multiple times. Concurrency with multiple devices per links or multiple streams enabled on the same link also needs to be fixed.
These patches are the result of hours of validation on the Intel side and should benefit other implementations since there is nothing hardware-specific. The Intel-specific changes being reviewed do depend on those stream changes though to be functional.
Bard Liao (1): soundwire: stream: only prepare stream when it is configured.
Pierre-Louis Bossart (3): soundwire: stream: remove redundant pr_err traces soundwire: stream: update state machine and add state checks soundwire: stream: do not update parameters during DISABLED-PREPARED transition
Rander Wang (2): soundwire: stream: fix support for multiple Slaves on the same link soundwire: stream: don't program ports for a stream that has not been prepared
Documentation/driver-api/soundwire/stream.rst | 63 ++++++++---- drivers/soundwire/stream.c | 97 +++++++++++++++---- 2 files changed, 124 insertions(+), 36 deletions(-)
base-commit: 09f6a72d014386939d21899921dd379006471a4b