linux/sound/soc/bcm/bcm63xx-pcm-whistler.c

// SPDX-License-Identifier: GPL-2.0-or-later
// linux/sound/bcm/bcm63xx-pcm-whistler.c
// BCM63xx whistler pcm interface
// Copyright (c) 2020 Broadcom Corporation
// Author: Kevin-Ke Li <[email protected]>

#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <sound/pcm_params.h>
#include <linux/regmap.h>
#include <linux/of_device.h>
#include <sound/soc.h>
#include "bcm63xx-i2s.h"


struct i2s_dma_desc { … };

struct bcm63xx_runtime_data { … };

static const struct snd_pcm_hardware bcm63xx_pcm_hardware = …;

static int bcm63xx_pcm_hw_params(struct snd_soc_component *component,
				 struct snd_pcm_substream *substream,
				 struct snd_pcm_hw_params *params)
{ … }

static int bcm63xx_pcm_hw_free(struct snd_soc_component *component,
			struct snd_pcm_substream *substream)
{ … }

static int bcm63xx_pcm_trigger(struct snd_soc_component *component,
			       struct snd_pcm_substream *substream, int cmd)
{ … }

static int bcm63xx_pcm_prepare(struct snd_soc_component *component,
			struct snd_pcm_substream *substream)
{ … }

static snd_pcm_uframes_t
bcm63xx_pcm_pointer(struct snd_soc_component *component,
		struct snd_pcm_substream *substream)
{ … }

static int bcm63xx_pcm_open(struct snd_soc_component *component,
			struct snd_pcm_substream *substream)
{ … }

static int bcm63xx_pcm_close(struct snd_soc_component *component,
			struct snd_pcm_substream *substream)
{ … }

static irqreturn_t i2s_dma_isr(int irq, void *bcm_i2s_priv)
{ … }

static int bcm63xx_soc_pcm_new(struct snd_soc_component *component,
		struct snd_soc_pcm_runtime *rtd)
{ … }

static const struct snd_soc_component_driver bcm63xx_soc_platform = …;

int bcm63xx_soc_platform_probe(struct platform_device *pdev,
			       struct bcm_i2s_priv *i2s_priv)
{ … }

int bcm63xx_soc_platform_remove(struct platform_device *pdev)
{ … }

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