linux/sound/soc/qcom/lpass-cdc-dma.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2021 The Linux Foundation. All rights reserved.
 *
 * lpass-cdc-dma.c -- ALSA SoC CDC DMA CPU DAI driver for QTi LPASS
 */

#include <dt-bindings/sound/qcom,lpass.h>
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/export.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>

#include "lpass-lpaif-reg.h"
#include "lpass.h"

#define CODEC_MEM_HZ_NORMAL …

enum codec_dma_interfaces { … };

static void __lpass_get_dmactl_handle(struct snd_pcm_substream *substream, struct snd_soc_dai *dai,
				      struct lpaif_dmactl **dmactl, int *id)
{ … }

static int __lpass_get_codec_dma_intf_type(int dai_id)
{ … }

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

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

static void lpass_cdc_dma_daiops_shutdown(struct snd_pcm_substream *substream,
				      struct snd_soc_dai *dai)
{ … }

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

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

const struct snd_soc_dai_ops asoc_qcom_lpass_cdc_dma_dai_ops = …;
EXPORT_SYMBOL_GPL(…);

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