[alsa-devel] [PATCH] ALSA: dice: add stream format parameters for PreSonus FireStudio
Takashi Iwai
tiwai at suse.de
Mon May 20 07:47:41 CEST 2019
On Fri, 17 May 2019 04:56:22 +0200,
Takashi Sakamoto wrote:
>
> FireStudio was launched by PreSonus 2009. This model consists of three
> ICs for its packet processing on IEEE 1394 bus:
>
> - Texus Instruments TSB41AB2 for physical layer of IEEE 1394 bus
> - WaveFront semiconductor, Dice II STD ASIC for link layer of IEEE 1394
> bus and protocol layer
> - Xilinx Spartan XG3S500E FPGA for signal processing
>
> This model don't support TCAT extended application protocol. For such
> devices, ALSA dice driver needs to have hard-coded parameters for stream
> formats.
>
> This commit adds hard-coded table for this model. As a result, sampling
> transfer frequencies of 88.2/96.0 kHz are supported. I note that this
> patch can be backported to Linux kernel v4.18 and later.
>
> $ python2 crpp < /sys/bus/firewire/devices/fw1/config_rom
> ROM header and bus information block
> -----------------------------------------------------------------
> 400 04042eda bus_info_length 4, crc_length 4, crc 11994
> 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 000a9204 company_id 000a92 |
> 410 023a8b7f device_id 04023a8b7f | EUI-64 000a9204023a8b7f
>
> root directory
> -----------------------------------------------------------------
> 414 000661b6 directory_length 6, crc 25014
> 418 03000a92 vendor
> 41c 8100000a --> descriptor leaf at 444
> 420 17000008 model
> 424 8100000d --> descriptor leaf at 458
> 428 0c0087c0 node capabilities per IEEE 1394
> 42c d1000001 --> unit directory at 430
>
> unit directory at 430
> -----------------------------------------------------------------
> 430 00041c75 directory_length 4, crc 7285
> 434 12000a92 specifier id
> 438 13000001 version
> 43c 17000008 model
> 440 8100000c --> descriptor leaf at 470
>
> descriptor leaf at 444
> -----------------------------------------------------------------
> 444 00047c11 leaf_length 4, crc 31761
> 448 00000000 textual descriptor
> 44c 00000000 minimal ASCII
> 450 50726553 "PreS"
> 454 6f6e7573 "onus"
>
> descriptor leaf at 458
> -----------------------------------------------------------------
> 458 0005d7b3 leaf_length 5, crc 55219
> 45c 00000000 textual descriptor
> 460 00000000 minimal ASCII
> 464 46495245 "FIRE"
> 468 53545544 "STUD"
> 46c 494f0000 "IO"
>
> descriptor leaf at 470
> -----------------------------------------------------------------
> 470 0005d7b3 leaf_length 5, crc 55219
> 474 00000000 textual descriptor
> 478 00000000 minimal ASCII
> 47c 46495245 "FIRE"
> 480 53545544 "STUD"
> 484 494f0000 "IO"
>
> Signed-off-by: Takashi Sakamoto <o-takashi at sakamocchi.jp>
Applied now. Thanks.
Takashi
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