linux/sound/soc/uniphier/aio-compress.c

// SPDX-License-Identifier: GPL-2.0
//
// Socionext UniPhier AIO Compress Audio driver.
//
// Copyright (c) 2017-2018 Socionext Inc.

#include <linux/bitfield.h>
#include <linux/circ_buf.h>
#include <linux/dma-mapping.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>

#include "aio.h"

static int uniphier_aio_compr_prepare(struct snd_soc_component *component,
				      struct snd_compr_stream *cstream);
static int uniphier_aio_compr_hw_free(struct snd_soc_component *component,
				      struct snd_compr_stream *cstream);

static int uniphier_aio_comprdma_new(struct snd_soc_pcm_runtime *rtd)
{ … }

static int uniphier_aio_comprdma_free(struct snd_soc_pcm_runtime *rtd)
{ … }

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

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

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

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

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

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

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

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

static int aio_compr_send_to_hw(struct uniphier_aio_sub *sub,
				char __user *buf, size_t dstsize)
{ … }

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

static int uniphier_aio_compr_get_caps(struct snd_soc_component *component,
				       struct snd_compr_stream *cstream,
				       struct snd_compr_caps *caps)
{ … }

static const struct snd_compr_codec_caps caps_iec = …;

static int uniphier_aio_compr_get_codec_caps(struct snd_soc_component *component,
					     struct snd_compr_stream *stream,
					     struct snd_compr_codec_caps *codec)
{ … }

const struct snd_compress_ops uniphier_aio_compress_ops = …;