AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-19 08:36:42 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

ASoC: amd: add ACP3x PDM platform driver

Browse Source 
PDM platform driver binds to the platform device created by
ACP3x PCI device. PDM driver registers ALSA DMA and CPU DAI
components with ASoC framework.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200518171704.24999-6-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vijendar Mukunda 2020-05-19 01:16:55 +08:00 committed by Mark Brown
parent 66c4f558aa
commit f621a3676d
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 100 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

95
sound/soc/amd/renoir/acp3x-pdm-dma.c Normal file
View File

@ -0,0 +1,95 @@
// SPDX-License-Identifier: GPL-2.0+
//
// AMD ALSA SoC PDM Driver
//
//Copyright 2020 Advanced Micro Devices, Inc.
#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 "rn_acp3x.h"
#define DRV_NAME "acp_rn_pdm_dma"
static struct snd_soc_dai_driver acp_pdm_dai_driver = {
.capture = {
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S24_LE |
SNDRV_PCM_FMTBIT_S32_LE,
.channels_min = 2,
.channels_max = 2,
.rate_min = 48000,
.rate_max = 48000,
},
};
static const struct snd_soc_component_driver acp_pdm_component = {
.name = DRV_NAME,
};
static int acp_pdm_audio_probe(struct platform_device *pdev)
{
struct resource *res;
struct pdm_dev_data *adata;
unsigned int irqflags;
int status;
if (!pdev->dev.platform_data) {
dev_err(&pdev->dev, "platform_data not retrieved\n");
return -ENODEV;
}
irqflags = *((unsigned int *)(pdev->dev.platform_data));
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
return -ENODEV;
}
adata = devm_kzalloc(&pdev->dev, sizeof(*adata), GFP_KERNEL);
if (!adata)
return -ENOMEM;
adata->acp_base = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
if (!adata->acp_base)
return -ENOMEM;
adata->capture_stream = NULL;
dev_set_drvdata(&pdev->dev, adata);
status = devm_snd_soc_register_component(&pdev->dev,
&acp_pdm_component,
&acp_pdm_dai_driver, 1);
if (status) {
dev_err(&pdev->dev, "Fail to register acp pdm dai\n");
return -ENODEV;
}
return 0;
}
static int acp_pdm_audio_remove(struct platform_device *pdev)
{
return 0;
}
static struct platform_driver acp_pdm_dma_driver = {
.probe = acp_pdm_audio_probe,
.remove = acp_pdm_audio_remove,
.driver = {
.name = "acp_rn_pdm_dma",
},
};
module_platform_driver(acp_pdm_dma_driver);
MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
MODULE_DESCRIPTION("AMD ACP3x Renior PDM Driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" DRV_NAME);

5
sound/soc/amd/renoir/rn_acp3x.h
View File

@ -29,6 +29,11 @@
#define ACP_ERROR_MASK 0x20000000
#define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
struct pdm_dev_data {
void __iomem *acp_base;
struct snd_pcm_substream *capture_stream;
};
static inline u32 rn_readl(void __iomem *base_addr)
{
return readl(base_addr - ACP_PHY_BASE_ADDRESS);