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

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

/*
 * This codes have five functionalities.
 *
 * 1.get information about firewire node
 * 2.get notification about starting/stopping stream
 * 3.lock/unlock streaming
 *
 */

#include "motu.h"

static bool has_dsp_event(struct snd_motu *motu)
{ … }

static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count,
		       loff_t *offset)
{ … }

static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
			       poll_table *wait)
{ … }

static int hwdep_get_info(struct snd_motu *motu, void __user *arg)
{ … }

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

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

static int hwdep_release(struct snd_hwdep *hwdep, struct file *file)
{ … }

static int hwdep_ioctl(struct snd_hwdep *hwdep, struct file *file,
	    unsigned int cmd, unsigned long arg)
{ … }

#ifdef CONFIG_COMPAT
static int hwdep_compat_ioctl(struct snd_hwdep *hwdep, struct file *file,
			      unsigned int cmd, unsigned long arg)
{ … }
#else
#define hwdep_compat_ioctl …
#endif

int snd_motu_create_hwdep_device(struct snd_motu *motu)
{ … }