linux/sound/soc/sof/compress.c

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// Copyright 2021 NXP
//
// Author: Daniel Baluta <[email protected]>

#include <sound/soc.h>
#include <sound/sof.h>
#include <sound/compress_driver.h>
#include "sof-audio.h"
#include "sof-priv.h"
#include "sof-utils.h"
#include "ops.h"

static void sof_set_transferred_bytes(struct sof_compr_stream *sstream,
				      u64 host_pos, u64 buffer_size)
{ … }

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

void snd_sof_compr_init_elapsed_work(struct work_struct *work)
{ … }

/*
 * sof compr fragment elapse, this could be called in irq thread context
 */
void snd_sof_compr_fragment_elapsed(struct snd_compr_stream *cstream)
{ … }

static int create_page_table(struct snd_soc_component *component,
			     struct snd_compr_stream *cstream,
			     unsigned char *dma_area, size_t size)
{ … }

static int sof_compr_open(struct snd_soc_component *component,
			  struct snd_compr_stream *cstream)
{ … }

static int sof_compr_free(struct snd_soc_component *component,
			  struct snd_compr_stream *cstream)
{ … }

static int sof_compr_set_params(struct snd_soc_component *component,
				struct snd_compr_stream *cstream, struct snd_compr_params *params)
{ … }

static int sof_compr_get_params(struct snd_soc_component *component,
				struct snd_compr_stream *cstream, struct snd_codec *params)
{ … }

static int sof_compr_trigger(struct snd_soc_component *component,
			     struct snd_compr_stream *cstream, int cmd)
{ … }

static int sof_compr_copy_playback(struct snd_compr_runtime *rtd,
				   char __user *buf, size_t count)
{ … }

static int sof_compr_copy_capture(struct snd_compr_runtime *rtd,
				  char __user *buf, size_t count)
{ … }

static int sof_compr_copy(struct snd_soc_component *component,
			  struct snd_compr_stream *cstream,
			  char __user *buf, size_t count)
{ … }

static int sof_compr_pointer(struct snd_soc_component *component,
			     struct snd_compr_stream *cstream,
			     struct snd_compr_tstamp *tstamp)
{ … }

struct snd_compress_ops sof_compressed_ops = …;
EXPORT_SYMBOL(…);