[PATCH 0/6] ALSA: fireface: support knob control event for Fireface 400

[Takashi Iwai]

On Thu, 12 Jan 2023 13:09:48 +0100,
Takashi Sakamoto wrote:
> 
> Hi,
> 
> Fireface 400 uses asynchronous transaction mechanism to deliver event of
> hardware knob control as well as received MIDI messages. Current
> implementation doesn't distinguish them, thus all arrived messages are
> processed for MIDI message.
> 
> This patchset adds the parser to distinguish them, and deliver knob
> control event to user space via ALSA hwdep character device. The
> implementation works well as long as I tested with the patches for
> libhitaki library:
> 
> https://github.com/alsa-project/libhitaki/tree/topic/ff/400-msg
> 
> I note that Fireface 400 transmits no asynchronous transaction when it
> is not configured by block write transaction to offset 0x000080100514,
> which turn off HOST led from red.
> 
> Takashi Sakamoto (6):
>   ALSA: fireface: rename callback functions
>   ALSA: fireface: pick up time stamp for request subaction of asynchronous
>     transaction
>   ALSA: fireface: add helper function to parse MIDI messages transmitted by
>     Fireface 400
>   ALSA: fireface: update UAPI for data of knob control
>   ALSA: fireface: add local framework to message parser
>   ALSA: fireface: implement message parser for Fireface 400

Applied now to for-next branch.  Thanks.


Takashi