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