[alsa-devel] [PATCH] ALSA: dice: add stream format parameters for PreSonus FireStudio

[Takashi Iwai]

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