[00/18] soundwire: code hardening and suspend-resume support

Message

Pierre-Louis Bossart Oct. 23, 2019, 9:45 p.m. UTC

this patchset applies on top of "[PATCH 00/14] soundwire: intel:
implement new ASoC interfaces". It implements a series of improvements
for:
a) interrupt handling on Intel platforms in MSI mode
b) race conditions on codec probe and enumeration
c) suspend-resume issues (clock-stop mode not supported for now)
d) underflow handling
e) updates to the stream state machine which did not support valid
ALSA transitions.

These patches were tested extensively on 4 different platforms and are
viewed as required for any sort of SoundWire-based product.

Bard Liao (3):
  soundwire: intel/cadence: fix timeouts in MSI mode
  soundwire: stream: only prepare stream when it is configured.
  soundwire: intel: reinitialize IP+DSP in .prepare()

Pierre-Louis Bossart (15):
  soundwire: fix race between driver probe and update_status callback
  soundwire: bus: add PM/no-PM versions of read/write functions
  soundwire: bus: write Slave Device Number without runtime_pm
  soundwire: intel: add helpers for link power down and shim wake
  soundwire: intel: Add basic power management support
  soundwire: intel: add pm_runtime support
  soundwire: intel: reset pm_runtime status during system resume
  soundwire: bus: add helper to reset Slave status to UNATTACHED
  soundwire: intel: call helper to reset Slave states on resume
  soundwire: bus: check first if Slaves become UNATTACHED
  soundwire: add enumeration_complete signaling
  soundwire: intel: disable pm_runtime when removing a master
  soundwire: bus: disable pm_runtime in sdw_slave_delete
  soundwire: stream: update state machine and add state checks
  soundwire: stream: do not update parameters during DISABLED-PREPARED
    transition

 Documentation/driver-api/soundwire/stream.rst |  63 +++-
 drivers/soundwire/bus.c                       | 157 +++++++--
 drivers/soundwire/bus.h                       |   3 +
 drivers/soundwire/bus_type.c                  |   5 +
 drivers/soundwire/cadence_master.c            |  17 +-
 drivers/soundwire/cadence_master.h            |   4 +
 drivers/soundwire/intel.c                     | 328 ++++++++++++++++--
 drivers/soundwire/intel.h                     |   2 +
 drivers/soundwire/intel_init.c                |  45 ++-
 drivers/soundwire/slave.c                     |   3 +
 drivers/soundwire/stream.c                    |  64 +++-
 include/linux/soundwire/sdw.h                 |   1 +
 include/linux/soundwire/sdw_intel.h           |   2 +
 13 files changed, 623 insertions(+), 71 deletions(-)