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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2019-07-22 06:36:56 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-07-22 17:05:00 +0300 |
| commit | 3baf30532f94030244a31a275b546d042656c535 (patch) | |
| tree | a8b92f5cf7c20ca9e5a190e5a9f91b2a005ff072 /sound/firewire/tascam | |
| parent | a35463d1f77d9e5244d6f4953d3c7f3a27c7625e (diff) | |
| download | linux-3baf30532f94030244a31a275b546d042656c535.tar.xz | |
ALSA: firewire-lib: add syt_override member for some protocols
Some protocols don't use syt field of CIP header to represent
presentation timestamp. For such protocol, ALSA IEC 61883-1/6
packet streaming engine uses a pointer into local variable for
the value of syt to call data block processing layer. However,
it can decide the value when initializing packet streaming
layer.
This commit adds 'syt_override' member for packet streaming
layer.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/tascam')
| -rw-r--r-- | sound/firewire/tascam/amdtp-tascam.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sound/firewire/tascam/amdtp-tascam.c b/sound/firewire/tascam/amdtp-tascam.c index 3a4d1f855f79..8fba6fb8ba8a 100644 --- a/sound/firewire/tascam/amdtp-tascam.c +++ b/sound/firewire/tascam/amdtp-tascam.c @@ -220,8 +220,12 @@ int amdtp_tscm_init(struct amdtp_stream *s, struct fw_unit *unit, if (err < 0) return 0; - /* Use fixed value for FDF field. */ - s->ctx_data.rx.fdf = 0x00; + if (dir == AMDTP_OUT_STREAM) { + // Use fixed value for FDF field. + s->ctx_data.rx.fdf = 0x00; + // Not used. + s->ctx_data.rx.syt_override = 0x0000; + } /* This protocol uses fixed number of data channels for PCM samples. */ p = s->protocol; |