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

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

#include "tascam.h"

/*
 * When return minus value, given argument is not MIDI status.
 * When return 0, given argument is a beginning of system exclusive.
 * When return the others, given argument is MIDI data.
 */
static inline int calculate_message_bytes(u8 status)
{ … }

static int fill_message(struct snd_fw_async_midi_port *port,
			struct snd_rawmidi_substream *substream)
{ … }

static void async_midi_port_callback(struct fw_card *card, int rcode,
				     void *data, size_t length,
				     void *callback_data)
{ … }

static void midi_port_work(struct work_struct *work)
{ … }

void snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port)
{ … }

static void handle_midi_tx(struct fw_card *card, struct fw_request *request,
			   int tcode, int destination, int source,
			   int generation, unsigned long long offset,
			   void *data, size_t length, void *callback_data)
{ … }

int snd_tscm_transaction_register(struct snd_tscm *tscm)
{ … }

/* At bus reset, these registers are cleared. */
int snd_tscm_transaction_reregister(struct snd_tscm *tscm)
{ … }

void snd_tscm_transaction_unregister(struct snd_tscm *tscm)
{ … }