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    Subject[RFC PATCH 00/40] soundwire: updates for 5.4
    Date
    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

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