The existing upstream code allows for SoundWire devices to be enumerated and managed by the bus, but streaming is not currently supported. Bard Liao, Rander Wang and I did quite a bit of integration/validation work to close this gap and we now have SoundWire streaming + basic power managemement on Intel CometLake and IceLake reference boards. These changes are still preliminary and should not be merged as is, but it's time to start reviews. While the number of patches is quite large, each of the changes is quite small. SOF driver changes will be submitted shortly as well but are still being validated. ClockStop modes and synchronized playback on multiple links are not supported for now and will likely be part of the next cycle (dependencies on codec drivers and multi-cpu DAI support). Acknowledgements: This work would not have been possible without the support of Slawomir Blauciak and Tomasz Lauda on the SOF side, currently being reviewed, see https://github.com/thesofproject/sof/pull/1638 Comments and feedback welcome! Bard liao (1): soundwire: include mod_devicetable.h to avoid compiling warnings Pierre-Louis Bossart (38): soundwire: add debugfs support soundwire: cadence_master: add debugfs register dump soundwire: cadence_master: align debugfs to 8 digits soundwire: intel: add debugfs register dump soundwire: intel: move interrupt enable after interrupt handler registration soundwire: intel: prevent possible dereference in hw_params soundwire: intel: fix channel number reported by hardware soundwire: intel: remove BIOS work-arounds soundwire: cadence_master: fix usage of CONFIG_UPDATE soundwire: cadence_master: remove useless wrapper soundwire: cadence_master: simplify bus clash interrupt clear soundwire: cadence_master: revisit interrupt settings soundwire: cadence_master: fix register definition for SLAVE_STATE soundwire: cadence_master: fix definitions for INTSTAT0/1 soundwire: cadence_master: handle multiple status reports per Slave soundwire: cadence_master: improve startup sequence with link hw_reset soundwire: bus: use runtime_pm_get_sync/pm when enabled soundwire: bus: split handling of Device0 events soundwire: bus: improve dynamic debug comments for enumeration soundwire: prototypes for suspend/resume soundwire: export helpers to find row and column values soundwire: stream: fix disable sequence soundwire: cadence_master: use BIOS defaults for frame shape soundwire: intel: use BIOS information to set clock dividers soundwire: Add Intel resource management algorithm soundwire: intel: handle disabled links soundwire: intel_init: add kernel module parameter to filter out links soundwire: cadence_master: add kernel parameter to override interrupt mask soundwire: intel: move shutdown() callback and don't export symbol soundwire: intel: add helper for initialization soundwire: intel: Add basic power management support soundwire: intel: ignore disabled links for suspend/resume soundwire: intel: export helper to exit reset soundwire: intel: disable interrupts on suspend soundwire: cadence_master: add hw_reset capability in debugfs soundwire: cadence_master: make clock stop exit configurable on init soundwire: intel: add pm_runtime support soundwire: intel: add delay on restart for enumeration Rander Wang (1): soundwire: cadence_master: fix divider setting in clock register drivers/soundwire/Makefile | 4 +- drivers/soundwire/algo_dynamic_allocation.c | 403 ++++++++++++++++++++ drivers/soundwire/bus.c | 44 ++- drivers/soundwire/bus.h | 77 +++- drivers/soundwire/bus_type.c | 3 + drivers/soundwire/cadence_master.c | 365 ++++++++++++++---- drivers/soundwire/cadence_master.h | 12 +- drivers/soundwire/debugfs.c | 156 ++++++++ drivers/soundwire/intel.c | 381 +++++++++++++++++- drivers/soundwire/intel_init.c | 14 + drivers/soundwire/slave.c | 1 + drivers/soundwire/stream.c | 53 ++- include/linux/soundwire/sdw.h | 15 + 13 files changed, 1414 insertions(+), 114 deletions(-) create mode 100644 drivers/soundwire/algo_dynamic_allocation.c create mode 100644 drivers/soundwire/debugfs.c -- 2.20.1 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
