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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2015-09-19 05:21:57 +0300
committerTakashi Iwai <tiwai@suse.de>2015-09-29 13:48:19 +0300
commitbc8500da3e62cd6a896407a1b330a2eb21817c22 (patch)
tree74259f781b6999135349f5670c0bbd907f28936f /sound/firewire/amdtp-am824.h
parent51c29fd21389d9995a8a18a91eeb8dd1220a2119 (diff)
downloadlinux-bc8500da3e62cd6a896407a1b330a2eb21817c22.tar.xz
ALSA: firewire-lib: move PCM substream constraint to AM824 layer
In IEC 61883-6, PCM frames are transferred in Multi Bit Linear Audio data channel. The data channel transfers 16/20/24 bit PCM samples. Thus, PCM substream has a constrain about it. This commit moves codes related to the constraint from packet streaming layer to AM824 data block processing layer. 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 cfc0d61e0db4..4aaed9048d82 100644
--- a/sound/firewire/amdtp-am824.h
+++ b/sound/firewire/amdtp-am824.h
@@ -1,6 +1,8 @@
#ifndef SOUND_FIREWIRE_AMDTP_AM824_H_INCLUDED
#define SOUND_FIREWIRE_AMDTP_AM824_H_INCLUDED
+#include <sound/pcm.h>
+
#include "amdtp-stream.h"
int amdtp_am824_set_parameters(struct amdtp_stream *s, unsigned int rate,
@@ -8,6 +10,9 @@ int amdtp_am824_set_parameters(struct amdtp_stream *s, unsigned int rate,
unsigned int midi_ports,
bool double_pcm_frames);
+int amdtp_am824_add_pcm_hw_constraints(struct amdtp_stream *s,
+ struct snd_pcm_runtime *runtime);
+
int amdtp_am824_init(struct amdtp_stream *s, struct fw_unit *unit,
enum amdtp_stream_direction dir, enum cip_flags flags);
#endif