linux/sound/soc/amd/acp/acp-i2s.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) 2021 Advanced Micro Devices, Inc.
//
// Authors: Ajit Kumar Pandey <[email protected]>
//

/*
 * Generic Hardware interface for ACP Audio I2S controller
 */

#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/io.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <linux/dma-mapping.h>
#include <linux/bitfield.h>

#include "amd.h"

#define DRV_NAME …
#define I2S_MASTER_MODE_ENABLE …
#define LRCLK_DIV_FIELD …
#define BCLK_DIV_FIELD …
#define ACP63_LRCLK_DIV_FIELD …
#define ACP63_BCLK_DIV_FIELD …

static inline void acp_set_i2s_clk(struct acp_dev_data *adata, int dai_id)
{ … }

static int acp_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
			   unsigned int fmt)
{ … }

static int acp_i2s_set_tdm_slot(struct snd_soc_dai *dai, u32 tx_mask, u32 rx_mask,
				int slots, int slot_width)
{ … }

static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params,
			    struct snd_soc_dai *dai)
{ … }

static int acp_i2s_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai)
{ … }

static int acp_i2s_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
{ … }

static int acp_i2s_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
{ … }

const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops = …;
EXPORT_SYMBOL_NS_GPL(…);

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_ALIAS(…);