linux/sound/soc/amd/yc/acp6x-pdm-dma.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * AMD ALSA SoC Yellow Carp PDM Driver
 *
 * Copyright 2021 Advanced Micro Devices, Inc.
 */

#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/bitfield.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/pm_runtime.h>

#include "acp6x.h"

#define DRV_NAME

static int pdm_gain =;
module_param(pdm_gain, int, 0644);
MODULE_PARM_DESC();

static const struct snd_pcm_hardware acp6x_pdm_hardware_capture =;

static void acp6x_init_pdm_ring_buffer(u32 physical_addr, u32 buffer_size,
				       u32 watermark_size, void __iomem *acp_base)
{}

static void acp6x_enable_pdm_clock(void __iomem *acp_base)
{}

static void acp6x_enable_pdm_interrupts(void __iomem *acp_base)
{}

static void acp6x_disable_pdm_interrupts(void __iomem *acp_base)
{}

static bool acp6x_check_pdm_dma_status(void __iomem *acp_base)
{}

static int acp6x_start_pdm_dma(void __iomem *acp_base)
{}

static int acp6x_stop_pdm_dma(void __iomem *acp_base)
{}

static void acp6x_config_dma(struct pdm_stream_instance *rtd, int direction)
{}

static int acp6x_pdm_dma_open(struct snd_soc_component *component,
			      struct snd_pcm_substream *substream)
{}

static int acp6x_pdm_dma_hw_params(struct snd_soc_component *component,
				   struct snd_pcm_substream *substream,
				   struct snd_pcm_hw_params *params)
{}

static u64 acp6x_pdm_get_byte_count(struct pdm_stream_instance *rtd,
				    int direction)
{}

static snd_pcm_uframes_t acp6x_pdm_dma_pointer(struct snd_soc_component *comp,
					       struct snd_pcm_substream *stream)
{}

static int acp6x_pdm_dma_new(struct snd_soc_component *component,
			     struct snd_soc_pcm_runtime *rtd)
{}

static int acp6x_pdm_dma_close(struct snd_soc_component *component,
			       struct snd_pcm_substream *substream)
{}

static int acp6x_pdm_dai_trigger(struct snd_pcm_substream *substream,
				 int cmd, struct snd_soc_dai *dai)
{}

static const struct snd_soc_dai_ops acp6x_pdm_dai_ops =;

static struct snd_soc_dai_driver acp6x_pdm_dai_driver =;

static const struct snd_soc_component_driver acp6x_pdm_component =;

static int acp6x_pdm_audio_probe(struct platform_device *pdev)
{}

static void acp6x_pdm_audio_remove(struct platform_device *pdev)
{}

static int __maybe_unused acp6x_pdm_resume(struct device *dev)
{}

static int __maybe_unused acp6x_pdm_suspend(struct device *dev)
{}

static int __maybe_unused acp6x_pdm_runtime_resume(struct device *dev)
{}

static const struct dev_pm_ops acp6x_pdm_pm_ops =;

static struct platform_driver acp6x_pdm_dma_driver =;

module_platform_driver();

MODULE_AUTHOR();
MODULE_DESCRIPTION();
MODULE_LICENSE();
MODULE_ALIAS();