[alsa-devel] [PATCH 0/8] ALSA: fireface: add support for Fireface 800 with MIDI functionality only

[Takashi Iwai]

On Tue, 11 Dec 2018 11:17:27 +0100,
Takashi Sakamoto wrote:
> 
> Hi,
> 
> In 2004, RME GmbH shipped Fireface 800 as a flagship model of its
> Fireface series. This model consists of some chips:
>  - TI TSB81BA3D for physical layer on cable environment of EEE 1394 bus
>  - TI TSB82AA2 for link layer for 1394 OHCI bus bridge to PCI bus
>  - Xilinx Spartan-3 FPGA XC3S400
>  - Xilinx High-Performance CPLD XC9572XL
> 
> A remarkable point of this model is that its physical/link layer
> support S800 (800Mbps) mode of IEEE 1394b. Within devices of audio
> and music unit on IEEE 1394 bus, this is an unique model to support it,
> as long as I know.
> 
> This commit adds support for the model with its MIDI functionality only.
> The functionality is quite similar to the one of Fireface 400. In patch
> 01-06, some codes specific to Fireface 400 are arranged to be shared by
> both models.
> 
> On the other hand, there're some differences. The largest difference is
> that the model has no register to switch enabling/disabling tx
> asynchronous transactions for MIDI messages. Therefore the functionality
> work well without any assist by userspace.
> 
> For this work, I use v2.77 firmware and v3.1.24 driver shipped by RME
> GmbH. If finding some differences between older firmware, please report
> it with enough information for debug. To help users for test, I prepare
> a remote branch including these patches. This can be backport to Linux
> v4.17 or later.
> https://github.com/takaswie/snd-firewire-improve/tree/topic/ff800-midi
> 
> Takashi Sakamoto (8):
>   ALSA: fireface: share some registers for status of clock
>     synchronization
>   ALSA: fireface: share status and configuration dump
>   ALSA: fireface: share helper function to get current sampling rate and
>     clock source
>   ALSA: fireface: add support for second optical interface for ADAT
>     stream
>   ALSA: fireface: share register for async transaction of MIDI messages
>   ALSA: fireface: add driver data for register for MIDI high address
>   ALSA: fireface: localize a handler for MIDI messages on tx transaction
>   ALSA: fireface: add support for Fireface 800 with MIDI functionality
>     only

Applied all eight patches now.  Thanks.


Takashi