linux/sound/firewire/tascam/amdtp-tascam.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * amdtp-tascam.c - a part of driver for TASCAM FireWire series
 *
 * Copyright (c) 2015 Takashi Sakamoto
 */

#include <sound/pcm.h>
#include "tascam.h"

#define AMDTP_FMT_TSCM_TX …
#define AMDTP_FMT_TSCM_RX …

struct amdtp_tscm { … };

int amdtp_tscm_set_parameters(struct amdtp_stream *s, unsigned int rate)
{ … }

static void write_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm,
			  __be32 *buffer, unsigned int frames,
			  unsigned int pcm_frames)
{ … }

static void read_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm,
			 __be32 *buffer, unsigned int frames,
			 unsigned int pcm_frames)
{ … }

static void write_pcm_silence(struct amdtp_stream *s, __be32 *buffer,
			      unsigned int data_blocks)
{ … }

int amdtp_tscm_add_pcm_hw_constraints(struct amdtp_stream *s,
				      struct snd_pcm_runtime *runtime)
{ … }

static void read_status_messages(struct amdtp_stream *s,
				 __be32 *buffer, unsigned int data_blocks)
{ … }

static void process_ir_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
				    unsigned int count, struct snd_pcm_substream *pcm)
{ … }

static void process_it_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
				    unsigned int count, struct snd_pcm_substream *pcm)
{ … }

int amdtp_tscm_init(struct amdtp_stream *s, struct fw_unit *unit,
		    enum amdtp_stream_direction dir, unsigned int pcm_channels)
{ … }