linux/sound/soc/sof/stream-ipc.c

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license.  When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2019 Intel Corporation
//
// Authors: Guennadi Liakhovetski <[email protected]>

/* Generic SOF IPC code */

#include <linux/device.h>
#include <linux/export.h>
#include <linux/module.h>
#include <linux/types.h>

#include <sound/pcm.h>
#include <sound/sof/stream.h>

#include "ops.h"
#include "sof-priv.h"
#include "sof-audio.h"

struct sof_stream { … };

/* Mailbox-based Generic IPC implementation */
int sof_ipc_msg_data(struct snd_sof_dev *sdev,
		     struct snd_sof_pcm_stream *sps,
		     void *p, size_t sz)
{ … }
EXPORT_SYMBOL(…);

int sof_set_stream_data_offset(struct snd_sof_dev *sdev,
			       struct snd_sof_pcm_stream *sps,
			       size_t posn_offset)
{ … }
EXPORT_SYMBOL(…);

int sof_stream_pcm_open(struct snd_sof_dev *sdev,
			struct snd_pcm_substream *substream)
{ … }
EXPORT_SYMBOL(…);

int sof_stream_pcm_close(struct snd_sof_dev *sdev,
			 struct snd_pcm_substream *substream)
{ … }
EXPORT_SYMBOL(…);