LXR linux/sound/firewire/amdtp-am824.h

   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
  30int 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
  35void amdtp_am824_set_pcm_position(struct amdtp_stream *s, unsigned int index,
  36                                 unsigned int position);
  37
  38void amdtp_am824_set_midi_position(struct amdtp_stream *s,
  39                                   unsigned int position);
  40
  41int amdtp_am824_add_pcm_hw_constraints(struct amdtp_stream *s,
  42                                       struct snd_pcm_runtime *runtime);
  43
  44void amdtp_am824_midi_trigger(struct amdtp_stream *s, unsigned int port,
  45                              struct snd_rawmidi_substream *midi);
  46
  47int amdtp_am824_init(struct amdtp_stream *s, struct fw_unit *unit,
  48                     enum amdtp_stream_direction dir, unsigned int flags);
  49#endif
  50