Commits
Takashi Sakamoto committed 1ceb506d631
ALSA: dice: fix stream format parameters for TC Electronic Studio Konnekt 48
TC Electronic Studio Konnekt 48 is an application of combination of
WaveFront Dice II STD and TC Applied Technologies (TCAT) TCD2210 (Dice
Mini). The latter is on a board with BNC and optical interfaces, thus
used for signal processing for word clock, S/PDIF and ADAT. This model
doesn't support TCAT extended application protocol. For such devices,
ALSA dice driver needs to have hard-coded parameters for stream formats.
This commit fixes stream format parameters for this model. Unfortunately, at
sampling transmission frequencies over 48.0kHz, I confirmed that current
ALSA dice driver doesn't drive the device appropriately to generate sounds
(silence). I guess that this comes from timestamping quirk of Dice-based
devices, which I reported.
[alsa-devel] Dice packet sequence quirk and ALSA firewire stack in Linux 4.6
http://mailman.alsa-project.org/pipermail/alsa-devel/2016-May/107715.html
$ cd linux-firewire-utils/src
$ python2 crpp < /sys/bus/firewire/devices/fw1/config_rom
ROM header and bus information block
-----------------------------------------------------------------
400 04044a26 bus_info_length 4, crc_length 4, crc 18982
404 31333934 bus_name "1394"
408 e0ff8112 irmc 1, cmc 1, isc 1, bmc 0, pmc 0, cyc_clk_acc 255,
max_rec 8 (512), max_rom 1, gen 1, spd 2 (S400)
40c 00016604 company_id 000166 |
410 08a65810 device_id 0408a65810 | EUI-64 0001660408a65810
root directory
-----------------------------------------------------------------
414 00062ab9 directory_length 6, crc 10937
418 03000166 vendor
41c 8100000a --> descriptor leaf at 444
420 17000022 model
424 8100000f --> descriptor leaf at 460
428 0c0087c0 node capabilities per IEEE 1394
42c d1000001 --> unit directory at 430
unit directory at 430
-----------------------------------------------------------------
430 0004d5c5 directory_length 4, crc 54725
434 12000166 specifier id
438 13000001 version
43c 17000022 model
440 8100000f --> descriptor leaf at 47c
descriptor leaf at 444
-----------------------------------------------------------------
444 0006c490 leaf_length 6, crc 50320
448 00000000 textual descriptor
44c 00000000 minimal ASCII
450 54432045 "TC E"
454 6c656374 "lect"
458 726f6e69 "roni"
45c 63000000 "c"
descriptor leaf at 460
-----------------------------------------------------------------
460 0006e08e leaf_length 6, crc 57486
464 00000000 textual descriptor
468 00000000 minimal ASCII
46c 53747564 "Stud"
470 696f4b6f "ioKo"
474 6e6e656b "nnek"
478 74343800 "t48"
descriptor leaf at 47c
-----------------------------------------------------------------
47c 0006e08e leaf_length 6, crc 57486
480 00000000 textual descriptor
484 00000000 minimal ASCII
488 53747564 "Stud"
48c 696f4b6f "ioKo"
490 6e6e656b "nnek"
494 74343800 "t48"
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>