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

[Pierre-Louis Bossart]

On 9/3/20 5:36 AM, Vinod Koul wrote:
> On 01-09-20, 11:22, Pierre-Louis Bossart wrote:
>> 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.
> 
> Is this targetted towards the sdw tree or regmap tree, I think it may
> have dependencies so sdw can be used.
> 
> It would be nice to mention these things here in cover

It was intended for the regmap tree (the cover letter does not include 
the soundwire: prefix).

Patch2 would need the ack of SoundWire maintainers (Bard already provide 
his tag).

The dependencies are regmap->ASoC for codec integration. There will be 
no dependencies for the SoundWire core proper, SDCA is really about the 
device side of things beyond what the bus provides.

Thanks!

> 
>>
>> 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
>