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ALSA: fireface: add support for Fireface 800 with MIDI functionality only

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Fireface 800 is a flagship model of RME GmbH for audio and music units
on IEEE 1394 bus, shipped 2004. This model consists of four 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

This commit adds support Fireface 800. In this time, the support is
restricted to its MIDI functionality, thus this commit adds some
condition statements to avoid touching streaming functionality.

Unlike Fireface 400, Fireface 800 has no functionality to suppress
asynchronous transactions for MIDI messages except for unregister of
listen address in controller side, thus the feature is available as is.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto
2018-12-11 19:17:35 +09:00
committed by Takashi Iwai
parent aef4ad2f5a
commit a91f676074
5 changed files with 70 additions and 13 deletions
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sound/firewire/fireface/ff.h
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@@ -114,6 +114,7 @@ struct snd_ff_protocol {
int (*switch_fetching_mode)(struct snd_ff *ff, bool enable);
};
extern const struct snd_ff_protocol snd_ff_protocol_ff800;
extern const struct snd_ff_protocol snd_ff_protocol_ff400;
int snd_ff_transaction_get_clock(struct snd_ff *ff, unsigned int *rate,