linux_dsm_epyc7002/sound/firewire
Takashi Sakamoto 13f3a46d2a ALSA: oxfw: add Mackie Onyx Satellite quirk to inform wrong value in 'dbs' field in tx CIP header
Mackie Onyx Satellite has two usage; standalone and with base station.

These two modes has different stream formats. In standalone mode, rx data
block includes 2 Multi Bit Linear Audio (MBLA) data channels and tx data
block includes 2. With base station, they're 6 and 2.

Although, with base station, the actual tx packet include wrong value in
'dbs' field in its CIP header. This quirk causes packet streaming layer to
detect packet discontinuity and to stop PCM substream.

This is a response of 'single' subfunction 'extended stream format
information' command in AV/C Stream Format Information Specification 1.1.
It means that a data block in tx packets includes 2 MBLA data channels.

$ ./firewire-request /dev/fw1 fcp 0x01ffbfc001000000ffffffff
response: 000: 0c ff bf c0 01 00 00 00 ff 00 90 40 03 02 01 02
response: 010: 06

Current OXFW driver parses the response and detects stream formats
correctly.

$ cat /proc/asound/card1/firewire/formation
...
Output Stream from device:
	Rate	PCM	MIDI
* 	48000	2	0
 	44100	2	0
 	88200	2	0
	96000	2	0

On the other hand, in actual tx CIP, the 'dbs' field has 6. But the number
of quadlets in CIP payload is not multiple of 6. Seeing the subtraction of
two successive payload quadlets, it should be multiple of 2.

payload  CIP      CIP
quadlets header0  header1
      24 00060052 9002ffff
      24 0006005e 9002ffff
      26 0006006a 9002ffff
      24 00060077 9002ffff
      24 00060083 9002ffff
      26 0006008f 9002ffff
      24 0006009c 9002ffff
      24 000600a8 9002ffff
      26 000600b4 9002ffff
      24 000600c1 9002ffff

This commit adds support for this quirk to OXFW driver, by using
CIP_WRONG_DBS flag. When this flag is set, packet streaming layer uses
the value of its 'data_block_quadlets' member instead of the value in CIP
header. This value is already set by OXFW driver and no discontinuity is
detected.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-09-24 11:44:25 +02:00
..
bebob ALSA: fireworks/bebob/dice/oxfw: fix substreams counting at vmalloc failure 2015-08-29 09:14:41 +02:00
dice ALSA: fireworks/bebob/dice/oxfw: fix substreams counting at vmalloc failure 2015-08-29 09:14:41 +02:00
fireworks ALSA: fireworks/bebob/dice/oxfw: fix substreams counting at vmalloc failure 2015-08-29 09:14:41 +02:00
oxfw ALSA: oxfw: add Mackie Onyx Satellite quirk to inform wrong value in 'dbs' field in tx CIP header 2015-09-24 11:44:25 +02:00
amdtp.c ALSA: fireworks/firewire-lib: add support for recent firmware quirk 2015-08-05 07:52:39 +02:00
amdtp.h ALSA: fireworks/firewire-lib: add support for recent firmware quirk 2015-08-05 07:52:39 +02:00
cmp.c ALSA: firewire-lib: fix kerneldoc errors 2014-11-18 18:10:23 +01:00
cmp.h ALSA: firewire-lib: Add a new function to check others' connection 2014-05-26 14:22:46 +02:00
fcp.c ALSA: firewire-lib: Remove a comment about restriction of asynchronous operation 2014-06-03 08:14:21 +02:00
fcp.h ALSA: firewire-lib: Add some AV/C general commands 2014-05-26 14:23:13 +02:00
isight.c ALSA: pcm: Add snd_pcm_stop_xrun() helper 2014-11-09 18:20:40 +01:00
iso-resources.c ALSA: firewire-lib: leave unit reference counting completely 2015-03-10 15:27:19 +01:00
iso-resources.h firewire: octlet AT payloads can be stack-allocated 2011-05-10 22:53:44 +02:00
Kconfig ALSA: bebob: add support for Behringer FCA 610/1616 2015-06-15 13:38:47 +02:00
lib.c ALSA: firewire: extend snd_fw_transaction() 2013-10-20 22:07:57 +02:00
lib.h ALSA: firewire: extend snd_fw_transaction() 2013-10-20 22:07:57 +02:00
Makefile ALSA: oxfw: Move to its own directory 2014-11-29 20:21:43 +01:00
packets-buffer.c sound: Add export.h for THIS_MODULE/EXPORT_SYMBOL where needed 2011-10-31 19:31:22 -04:00
packets-buffer.h ALSA: add LaCie FireWire Speakers/Griffin FireWave Surround driver 2011-03-15 08:42:22 +01:00
scs1x.c ALSA: firewire: Convert to snd_card_new() with a device pointer 2014-02-14 08:13:31 +01:00