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

// SPDX-License-Identifier: GPL-2.0-only
/*
 * motu-stream.c - a part of driver for MOTU FireWire series
 *
 * Copyright (c) 2015-2017 Takashi Sakamoto <[email protected]>
 */

#include "motu.h"

#define READY_TIMEOUT_MS …

#define ISOC_COMM_CONTROL_OFFSET …
#define ISOC_COMM_CONTROL_MASK …
#define CHANGE_RX_ISOC_COMM_STATE …
#define RX_ISOC_COMM_IS_ACTIVATED …
#define RX_ISOC_COMM_CHANNEL_MASK …
#define RX_ISOC_COMM_CHANNEL_SHIFT …
#define CHANGE_TX_ISOC_COMM_STATE …
#define TX_ISOC_COMM_IS_ACTIVATED …
#define TX_ISOC_COMM_CHANNEL_MASK …
#define TX_ISOC_COMM_CHANNEL_SHIFT …

#define PACKET_FORMAT_OFFSET …
#define TX_PACKET_EXCLUDE_DIFFERED_DATA_CHUNKS …
#define RX_PACKET_EXCLUDE_DIFFERED_DATA_CHUNKS …
#define TX_PACKET_TRANSMISSION_SPEED_MASK …

static int keep_resources(struct snd_motu *motu, unsigned int rate,
			  struct amdtp_stream *stream)
{ … }

static int begin_session(struct snd_motu *motu)
{ … }

static void finish_session(struct snd_motu *motu)
{ … }

int snd_motu_stream_cache_packet_formats(struct snd_motu *motu)
{ … }

int snd_motu_stream_reserve_duplex(struct snd_motu *motu, unsigned int rate,
				   unsigned int frames_per_period,
				   unsigned int frames_per_buffer)
{ … }

static int ensure_packet_formats(struct snd_motu *motu)
{ … }

int snd_motu_stream_start_duplex(struct snd_motu *motu)
{ … }

void snd_motu_stream_stop_duplex(struct snd_motu *motu)
{ … }

static int init_stream(struct snd_motu *motu, struct amdtp_stream *s)
{ … }

static void destroy_stream(struct snd_motu *motu, struct amdtp_stream *s)
{ … }

int snd_motu_stream_init_duplex(struct snd_motu *motu)
{ … }

// This function should be called before starting streams or after stopping
// streams.
void snd_motu_stream_destroy_duplex(struct snd_motu *motu)
{ … }

static void motu_lock_changed(struct snd_motu *motu)
{ … }

int snd_motu_stream_lock_try(struct snd_motu *motu)
{ … }

void snd_motu_stream_lock_release(struct snd_motu *motu)
{ … }