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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2021-06-16 17:28:47 +0900
committerTakashi Iwai <tiwai@suse.de>2021-06-17 11:37:24 +0200
commitb431f16f1685b38d4dda0434f4bae2265ab9e3da (patch)
tree332d10812e089f7a9711bf86e5f8da2a183c26b3 /sound/firewire/Kconfig
parentd13d6b284d8b80802e3ab1c33f210579884c3060 (diff)
downloadlinux-next-b431f16f1685b38d4dda0434f4bae2265ab9e3da.tar.gz
ALSA: firewire-motu: add support for MOTU 896
MOTU 896 is a second model in MOTU FireWire series, produced in 2001. This model consists of three chips: * Texas Instruments TSB41AB2 (Physical layer for IEEE 1394 bus) * Philips Semiconductors PDI 1394L21BE (Link layer for IEEE 1394 bus and packet processing layer) * QuickLogic QuickRAM QL4016 (Data block processing layer and digital signal processing) This commit adds a support for the model, with its unique protocol as version 1. The features of this protocol are: * no MIDI support. * Rx packets have no data chunks for control and status messages. * Tx packets have 2 bytes for control and status messages in the end of each data block. * The most of settings are represented in bit flag in one quadlet address (0x'ffff'f000'0b14). * It's selectable to use signal on optical interface, however the device has no register specific to it. The state has effect just to whether to exclude differed data chunks. * The internal multiplexer is not configured by software. Just after powering on, the device has a quirk to fail handling transaction. I recommend users to connect the device enough after powering on. $ python3 crpp < /sys/bus/firewire/devices/fw1/config_rom ROM header and bus information block ----------------------------------------------------------------- 400 04102814 bus_info_length 4, crc_length 16, crc 10260 404 31333934 bus_name "1394" 408 20001000 irmc 0, cmc 0, isc 1, bmc 0, cyc_clk_acc 0, max_rec 1 (4) 40c 0001f200 company_id 0001f2 | 410 0000d645 device_id 000000d645 | EUI-64 0001f2000000d645 root directory ----------------------------------------------------------------- 414 0004c65c directory_length 4, crc 50780 418 030001f2 vendor 41c 0c0083c0 node capabilities per IEEE 1394 420 8d000006 --> eui-64 leaf at 438 424 d1000001 --> unit directory at 428 unit directory at 428 ----------------------------------------------------------------- 428 0003ab34 directory_length 3, crc 43828 42c 120001f2 specifier id 430 13000002 version 434 17102801 model eui-64 leaf at 438 ----------------------------------------------------------------- 438 0002057d leaf_length 2, crc 1405 43c 0001f200 company_id 0001f2 | 440 0000d645 device_id 000000d645 | EUI-64 0001f2000000d645 Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20210616082847.124688-3-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/Kconfig')
-rw-r--r--sound/firewire/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/firewire/Kconfig b/sound/firewire/Kconfig
index a70732bbddab..62658e2b111a 100644
--- a/sound/firewire/Kconfig
+++ b/sound/firewire/Kconfig
@@ -166,6 +166,7 @@ config SND_FIREWIRE_MOTU
help
Say Y here to enable support for FireWire devices which MOTU produced:
* 828
+ * 896
* 828mk2
* Traveler
* Ultralite