ASoC: amd: add vangogh i2s controller driver

// SPDX-License-Identifier: GPL-2.0+

//

// AMD ALSA SoC PCM Driver

//

// Copyright (C) 2021 Advanced Micro Devices, Inc. All rights reserved.

#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 "acp5x.h"

#define DRV_NAME "acp5x_i2s_playcap"

static const struct snd_soc_component_driver acp5x_dai_component = {

	.name = "acp5x-i2s",

};

static struct snd_soc_dai_driver acp5x_i2s_dai = {

	.playback = {

		.rates = SNDRV_PCM_RATE_8000_96000,

		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |

			SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,

		.channels_min = 2,

		.channels_max = 2,

		.rate_min = 8000,

		.rate_max = 96000,

	},

	.capture = {

		.rates = SNDRV_PCM_RATE_8000_96000,

		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |

			SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,

		.channels_min = 2,

		.channels_max = 2,

		.rate_min = 8000,

		.rate_max = 96000,

	},

};

static int acp5x_dai_probe(struct platform_device *pdev)

{

	struct resource *res;

	struct i2s_dev_data *adata;

	int ret;

	adata = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dev_data),

			     GFP_KERNEL);

	if (!adata)

		return -ENOMEM;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res) {

		dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");

		return -ENOMEM;

	}

	adata->acp5x_base = devm_ioremap(&pdev->dev, res->start,

					 resource_size(res));

	if (IS_ERR(adata->acp5x_base))

		return PTR_ERR(adata->acp5x_base);

	adata->master_mode = I2S_MASTER_MODE_ENABLE;

	dev_set_drvdata(&pdev->dev, adata);

	ret = devm_snd_soc_register_component(&pdev->dev,

					      &acp5x_dai_component,

					      &acp5x_i2s_dai, 1);

	if (ret)

		dev_err(&pdev->dev, "Fail to register acp i2s dai\n");

	return ret;

}

static struct platform_driver acp5x_dai_driver = {

	.probe = acp5x_dai_probe,

	.driver = {

		.name = "acp5x_i2s_playcap",

	},

};

module_platform_driver(acp5x_dai_driver);

MODULE_AUTHOR("Vijendar.Mukunda@amd.com");

MODULE_DESCRIPTION("AMD ACP5.x CPU DAI Driver");

MODULE_ALIAS("platform:" DRV_NAME);

MODULE_LICENSE("GPL v2");

#define DMA_SIZE 0x40

#define FRM_LEN 0x100

#define I2S_MASTER_MODE_ENABLE 1

#define I2S_MASTER_MODE_DISABLE 0

struct i2s_dev_data {

	bool master_mode;

	unsigned int i2s_irq;

	void __iomem *acp5x_base;

	struct snd_pcm_substream *play_stream;