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ASoC: amd: ps: add SoundWire dma driver 

SoundWire DMA platform driver binds to the platform device created by
ACP PCI device. SoundWire DMA driver registers ALSA DMA component
with ASoC framework.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20230612095903.2113464-4-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vijendar Mukunda 2023-06-12 15:28:57 +05:30 committed by Mark Brown
parent e1cb350610
commit 665dd181a9
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2 changed files with 75 additions and 0 deletions
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5
sound/soc/amd/ps/acp63.h
View File

@ -137,6 +137,11 @@ struct pdm_dev_data {
struct snd_pcm_substream *capture_stream;
};
struct sdw_dma_dev_data {
void __iomem *acp_base;
struct mutex *acp_lock; /* used to protect acp common register access */
};
/**
* struct acp63_dev_data - acp pci driver context
* @acp63_base: acp mmio base

70
sound/soc/amd/ps/ps-sdw-dma.c Normal file
View File

@ -0,0 +1,70 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* AMD ALSA SoC Pink Sardine SoundWire DMA Driver
*
* Copyright 2023 Advanced Micro Devices, Inc.
*/
#include <linux/err.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include "acp63.h"
#define DRV_NAME "amd_ps_sdw_dma"
static const struct snd_soc_component_driver acp63_sdw_component = {
.name = DRV_NAME,
};
static int acp63_sdw_platform_probe(struct platform_device *pdev)
{
struct resource *res;
struct sdw_dma_dev_data *sdw_data;
struct acp63_dev_data *acp_data;
struct device *parent;
int status;
parent = pdev->dev.parent;
acp_data = dev_get_drvdata(parent);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
return -ENODEV;
}
sdw_data = devm_kzalloc(&pdev->dev, sizeof(*sdw_data), GFP_KERNEL);
if (!sdw_data)
return -ENOMEM;
sdw_data->acp_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
if (!sdw_data->acp_base)
return -ENOMEM;
sdw_data->acp_lock = &acp_data->acp_lock;
dev_set_drvdata(&pdev->dev, sdw_data);
status = devm_snd_soc_register_component(&pdev->dev,
&acp63_sdw_component,
NULL, 0);
if (status)
dev_err(&pdev->dev, "Fail to register sdw dma component\n");
return status;
}
static struct platform_driver acp63_sdw_dma_driver = {
.probe = acp63_sdw_platform_probe,
.driver = {
.name = "amd_ps_sdw_dma",
},
};
module_platform_driver(acp63_sdw_dma_driver);
MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
MODULE_DESCRIPTION("AMD ACP6.3 PS SDW DMA Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);