linux/sound/firewire/fireface/amdtp-ff.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * amdtp-ff.c - a part of driver for RME Fireface series
 *
 * Copyright (c) 2015-2017 Takashi Sakamoto
 */

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

struct amdtp_ff { … };

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

static void write_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm,
			  __le32 *buffer, unsigned int frames,
			  unsigned int pcm_frames)
{ … }

static void read_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm,
			 __le32 *buffer, unsigned int frames,
			 unsigned int pcm_frames)
{ … }

static void write_pcm_silence(struct amdtp_stream *s,
			      __le32 *buffer, unsigned int frames)
{ … }

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

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

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

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