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

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

#include <linux/delay.h>
#include "tascam.h"

#define CLOCK_STATUS_MASK …
#define CLOCK_CONFIG_MASK …

#define READY_TIMEOUT_MS …

static int get_clock(struct snd_tscm *tscm, u32 *data)
{ … }

static int set_clock(struct snd_tscm *tscm, unsigned int rate,
		     enum snd_tscm_clock clock)
{ … }

int snd_tscm_stream_get_rate(struct snd_tscm *tscm, unsigned int *rate)
{ … }

int snd_tscm_stream_get_clock(struct snd_tscm *tscm, enum snd_tscm_clock *clock)
{ … }

static int enable_data_channels(struct snd_tscm *tscm)
{ … }

static int set_stream_formats(struct snd_tscm *tscm, unsigned int rate)
{ … }

static void finish_session(struct snd_tscm *tscm)
{ … }

static int begin_session(struct snd_tscm *tscm)
{ … }

static int keep_resources(struct snd_tscm *tscm, unsigned int rate,
			  struct amdtp_stream *stream)
{ … }

static int init_stream(struct snd_tscm *tscm, struct amdtp_stream *s)
{ … }

static void destroy_stream(struct snd_tscm *tscm, struct amdtp_stream *s)
{ … }

int snd_tscm_stream_init_duplex(struct snd_tscm *tscm)
{ … }

// At bus reset, streaming is stopped and some registers are clear.
void snd_tscm_stream_update_duplex(struct snd_tscm *tscm)
{ … }

// This function should be called before starting streams or after stopping
// streams.
void snd_tscm_stream_destroy_duplex(struct snd_tscm *tscm)
{ … }

int snd_tscm_stream_reserve_duplex(struct snd_tscm *tscm, unsigned int rate,
				   unsigned int frames_per_period,
				   unsigned int frames_per_buffer)
{ … }

int snd_tscm_stream_start_duplex(struct snd_tscm *tscm, unsigned int rate)
{ … }

void snd_tscm_stream_stop_duplex(struct snd_tscm *tscm)
{ … }

void snd_tscm_stream_lock_changed(struct snd_tscm *tscm)
{ … }

int snd_tscm_stream_lock_try(struct snd_tscm *tscm)
{ … }

void snd_tscm_stream_lock_release(struct snd_tscm *tscm)
{ … }