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Linux/sound/firewire/amdtp-am824.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef SOUND_FIREWIRE_AMDTP_AM824_H_INCLUDED
  3 #define SOUND_FIREWIRE_AMDTP_AM824_H_INCLUDED
  4 
  5 #include <sound/pcm.h>
  6 #include <sound/rawmidi.h>
  7 
  8 #include "amdtp-stream.h"
  9 
 10 #define AM824_IN_PCM_FORMAT_BITS        SNDRV_PCM_FMTBIT_S32
 11 
 12 #define AM824_OUT_PCM_FORMAT_BITS       SNDRV_PCM_FMTBIT_S32
 13 
 14 /*
 15  * This module supports maximum 64 PCM channels for one PCM stream
 16  * This is for our convenience.
 17  */
 18 #define AM824_MAX_CHANNELS_FOR_PCM      64
 19 
 20 /*
 21  * AMDTP packet can include channels for MIDI conformant data.
 22  * Each MIDI conformant data channel includes 8 MPX-MIDI data stream.
 23  * Each MPX-MIDI data stream includes one data stream from/to MIDI ports.
 24  *
 25  * This module supports maximum 1 MIDI conformant data channels.
 26  * Then this AMDTP packets can transfer maximum 8 MIDI data streams.
 27  */
 28 #define AM824_MAX_CHANNELS_FOR_MIDI     1
 29 
 30 int amdtp_am824_set_parameters(struct amdtp_stream *s, unsigned int rate,
 31                                unsigned int pcm_channels,
 32                                unsigned int midi_ports,
 33                                bool double_pcm_frames);
 34 
 35 void amdtp_am824_set_pcm_position(struct amdtp_stream *s, unsigned int index,
 36                                  unsigned int position);
 37 
 38 void amdtp_am824_set_midi_position(struct amdtp_stream *s,
 39                                    unsigned int position);
 40 
 41 int amdtp_am824_add_pcm_hw_constraints(struct amdtp_stream *s,
 42                                        struct snd_pcm_runtime *runtime);
 43 
 44 void amdtp_am824_midi_trigger(struct amdtp_stream *s, unsigned int port,
 45                               struct snd_rawmidi_substream *midi);
 46 
 47 int amdtp_am824_init(struct amdtp_stream *s, struct fw_unit *unit,
 48                      enum amdtp_stream_direction dir, enum cip_flags flags);
 49 #endif
 50 

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