[PATCH v2 0/3] regmap: add SoundWire 1.2 MBQ support

[Pierre-Louis Bossart]

In preparation of the upstream contribution of SDCA (SoundWire Device
Class for Audio) ASoC codec drivers [1] [2], add regmap support
SoundWire 1.2 MBQ support. The MBQ (Multi-Byte Quantity) registers
need to be handled in a different way from regular 8-bit SoundWire
registers, their main application is going to be for volume/gain
controls.

The second patch was initially suggested for inclusion in the
SoundWire tree, and was modified to add more background information on
SDCA in the commit message as requested by Vinod Koul.

Changes since v1:
Rebased on regmap tree (conflict with SPI stuff).
Removed mod_devicetable.h header
Removed -EOPNOTSUPP error codes, use -ENOTSUPP
Added long description of SDCA
Used FIELD_PREP/GET as suggested by Vinod Koul
Added Bard Liao's Acked-by tag.

Pierre-Louis Bossart (3):
  regmap: sdw: add required header files
  soundwire: SDCA: add helper macro to access controls
  regmap: sdw: add support for SoundWire 1.2 MBQ

 drivers/base/regmap/Kconfig             |   6 +-
 drivers/base/regmap/Makefile            |   1 +
 drivers/base/regmap/regmap-sdw-mbq.c    | 101 ++++++++++++++++++++++++
 drivers/base/regmap/regmap-sdw.c        |   2 +
 include/linux/regmap.h                  |  21 +++++
 include/linux/soundwire/sdw_registers.h |  33 ++++++++
 6 files changed, 163 insertions(+), 1 deletion(-)
 create mode 100644 drivers/base/regmap/regmap-sdw-mbq.c


base-commit: d17343b87da422a59d99a3ed130573dbeb96c582
-- 
2.25.1