[alsa-devel] Toneweal / Trigaudio FW66 device

[Takashi Sakamoto]

Hi Daniel,

On Mon, Jan 20, 2020 at 11:42:34AM +0000, Daniel Jozsef wrote:
> Thanks for the quick reaction, Takashi :) I ran the command you mentioned,
> and your guess was spot on:
> 
> daniel at gibbonmoon:~/opt/linux-firewire-utils-0.4/src$ ./firewire-request
> /dev/fw1 read 0xffffc8020000 60
> result: 000: 62 72 69 64 67 65 43 6f 03 00 00 00 00 00 00 00 bridgeCo........
> result: 010: 00 27 23 00 00 00 00 02 02 00 00 00 00 00 00 00 .'#.............
> result: 020: 32 30 31 30 30 35 32 35 31 32 31 35 30 34 20 20 20100525121504
> result: 030: 02 00 02 00 ff ff ff 00 80 00 0c 40 7c e3 13 00 ...........@|...
> result: 040: 32 30 30 38 31 32 30 32 31 33 34 34 34 38 20 20 20081202134448
> result: 050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

Yep, it's an application of BeBoB solution.

As a next step, please get responses against 5 AV/C commands below:

(AV/C UNIT INFO command)
$ ./firewire-request /dev/fw1 fcp 0x01ff3000ffffffff
response: 000: 0c ff 30 07 0f 00 14 96                         ..0.....

(AV/C SUBUNIT INFO command)
$ ./firewire-request /dev/fw1 fcp 0x01ff3100ffffffff
response: 000: 0c ff 31 00 08 60 ff ff                         ..1..`..

(AV/C PLUG INFO command for Unit)
$ ./firewire-request /dev/fw1 fcp 0x01ff0200ffffffff
response: 000: 0c ff 02 00 02 02 01 01                         ........

(AV/C PLUG INFO command for Audio subunit)
$ ./firewire-request /dev/fw1 fcp 0x01080200ffffffff
response: 000: 0c 08 02 00 02 02 ff ff                         ........

(AV/C PLUG INFO command for Music subunit)
$ ./firewire-request /dev/fw1 fcp 0x01600200ffffffff
response: 000: 0c 60 02 00 03 03 ff ff                         .`......

If you're interested in their contents, please refer to document published by
1394 Trading Association:

AV/C Digital Interface Command Set General Specification Version 4.2
(1394 Trading Association, September 1, 2004)
http://1394ta.org/wp-content/uploads/2015/07/2004006.pdf


Thanks

Takashi Sakamoto