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 3rd patch was initially suggested for inclusion in the SoundWire tree, and was modified to add more background information in the commit message as requested by Vinod Koul. Pierre-Louis Bossart (4): regmap: sdw: move to -EOPNOTSUPP 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 | 102 ++++++++++++++++++++++++ drivers/base/regmap/regmap-sdw.c | 8 +- include/linux/regmap.h | 20 +++++ include/linux/soundwire/sdw_registers.h | 13 +++ 6 files changed, 146 insertions(+), 4 deletions(-) create mode 100644 drivers/base/regmap/regmap-sdw-mbq.c base-commit: 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5 -- 2.25.1
