[PATCH v2 0/6] ASoC: SDCA: class-driver fixes and PDM data-port support

[Srinivas Kandagatla]

Three small fixes in the SDCA class driver (propagating a read_prop
failure, dropping an extra pm_runtime reference on probe failure, and
re-enabling the IRQ on a failed system suspend), plus three patches
that teach the SDCA class_function path to tag PDM data-port terminals
and the SoundWire core to treat PDM streams correctly.

The three fixes carry Fixes: tags and are Cc'd to stable; the PDM
support patches have no Fixes: tag as they add new behaviour rather
than fix a regression.

The three fixes were flagged during a sashiko review during WCD9378
SDCA codec driver patch review.

Merge strategy: patches 1-4 and patch 6 go via ASoC, patch 5 goes via
SoundWire. There is no compile-time dependency between the SoundWire
and ASoC changes: patch 5 can land in SoundWire while patches 1-4, 6
land in ASoC in any order. Patch 6's runtime behaviour depends on
patch 5 to work end-to-end on Qualcomm SDCA targets, but each tree
compiles and tests cleanly on its own.

Changes in v2:
- 2/6: switched from reordering pm_runtime_get_noresume() to dropping
  the extra reference on devm_pm_runtime_enable() failure, per
- Replaces v1 4/4 ("clear sconfig.bps on PDM data-port terminals")
  with v2 4-6/6:
  - Moved the PDM terminal-type check out of sdca_class_function.c
    into a new sdca_asoc_dai_is_pdm() helper, per Charles.
  - Signal PDM via sconfig.type = SDW_STREAM_PDM instead of clearing
    sconfig.bps, per Pierre-Louis Bossart (use the type field that
    already exists in struct sdw_stream_config).
  - Added a core SoundWire change that skips the bps mismatch check
    for SDW_STREAM_PDM so the slave's PCM-container-width bps and
    the master's PDM bps convention can co-exist without -EINVAL.
- v1: https://lore.kernel.org/all/[v1-cover-letter-message-id]/

Srinivas Kandagatla (6):
  ASoC: SDCA: propagate sdw_slave_read_prop() failure in class_read_prop
  ASoC: SDCA: drop pm_runtime reference on probe failure path
  ASoC: SDCA: re-enable IRQ on pm_runtime_force_suspend failure
  ASoC: SDCA: add sdca_asoc_dai_is_pdm() helper
  soundwire: stream: skip bps mismatch check for PDM streams
  ASoC: SDCA: class_function: mark PDM data-port terminals

 drivers/soundwire/stream.c           |  4 +++-
 include/sound/sdca_asoc.h            |  2 ++
 sound/soc/sdca/sdca_asoc.c           | 23 +++++++++++++++++++++++
 sound/soc/sdca/sdca_class.c          | 10 ++++++++--
 sound/soc/sdca/sdca_class_function.c |  3 +++
 5 files changed, 39 insertions(+), 3 deletions(-)


base-commit: 3d229ce89862b8e82d71a9e11d6f840ca272a6d6
-- 
2.53.0