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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2015-09-19 05:21:56 +0300
committerTakashi Iwai <tiwai@suse.de>2015-09-29 13:48:02 +0300
commit51c29fd21389d9995a8a18a91eeb8dd1220a2119 (patch)
treebc45c96ca22ad4eb7754da35d99a5394ed831a61 /sound/firewire/amdtp-am824.h
parent5955815e71ff9c773b156680c781c87728e37bea (diff)
downloadlinux-51c29fd21389d9995a8a18a91eeb8dd1220a2119.tar.xz
ALSA: firewire-lib: rename parameter setting function for AM824 with FDF field
The value of FDF field in CIP header is protocol-dependent. Thus, it's better to allow data block processing layer to decide the value in any timing. In AM824 data format, the value of FDF field in CIP header indicates N-flag and Nominal Sampling Frequency Code (sfc). The N-flag is for switching 'Clock-based rate control mode' and 'Command-based rate control mode'. In our implementation, 'Clock-based rate control mode' is just supported. Therefore, When sampling transfer frequency is decided, then the FDF can be set. This commit replaces 'amdtp_stream_set_parameters' with 'amdtp_am824_set_parameters' to set the FDF. This is the same timing to decide the ration between the number of data blocks and the number of PCM frames. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/amdtp-am824.h')
-rw-r--r--sound/firewire/amdtp-am824.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/firewire/amdtp-am824.h b/sound/firewire/amdtp-am824.h
index ed96ac56628f..cfc0d61e0db4 100644
--- a/sound/firewire/amdtp-am824.h
+++ b/sound/firewire/amdtp-am824.h
@@ -3,6 +3,11 @@
#include "amdtp-stream.h"
+int amdtp_am824_set_parameters(struct amdtp_stream *s, unsigned int rate,
+ unsigned int pcm_channels,
+ unsigned int midi_ports,
+ bool double_pcm_frames);
+
int amdtp_am824_init(struct amdtp_stream *s, struct fw_unit *unit,
enum amdtp_stream_direction dir, enum cip_flags flags);
#endif