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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2019-07-22 06:36:56 +0300
committerTakashi Iwai <tiwai@suse.de>2019-07-22 17:05:00 +0300
commit3baf30532f94030244a31a275b546d042656c535 (patch)
treea8b92f5cf7c20ca9e5a190e5a9f91b2a005ff072 /sound/firewire/tascam
parenta35463d1f77d9e5244d6f4953d3c7f3a27c7625e (diff)
downloadlinux-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.c8
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;