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, unsigned int flags);
49 #endif
50