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@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 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
