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ASoC: amd: add Pink Sardine ACP PCI driver

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ACP is a PCI audio device.
This patch adds PCI driver to bind to this device and get
PCI resources for Pink Sardine Platform.

Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@amd.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20220827165657.2343818-3-Syed.SabaKareem@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Syed Saba Kareem 2022-08-27 22:26:46 +05:30 committed by Mark Brown
parent 161bff5118
commit 95e43a170b
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 114 additions and 0 deletions
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20
sound/soc/amd/ps/acp62.h Normal file
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* AMD ALSA SoC PDM Driver
*
* Copyright (C) 2022 Advanced Micro Devices, Inc. All rights reserved.
*/
#include <sound/acp62_chip_offset_byte.h>
#define ACP_DEVICE_ID 0x15E2
static inline u32 acp62_readl(void __iomem *base_addr)
{
return readl(base_addr);
}
static inline void acp62_writel(u32 val, void __iomem *base_addr)
{
writel(val, base_addr);
}

94
sound/soc/amd/ps/pci-ps.c Normal file
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// SPDX-License-Identifier: GPL-2.0+
/*
* AMD Pink Sardine ACP PCI Driver
*
* Copyright 2022 Advanced Micro Devices, Inc.
*/
#include <linux/pci.h>
#include <linux/module.h>
#include <linux/io.h>
#include "acp62.h"
struct acp62_dev_data {
void __iomem *acp62_base;
};
static int snd_acp62_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
struct acp62_dev_data *adata;
u32 addr;
int ret;
/* Pink Sardine device check */
switch (pci->revision) {
case 0x63:
break;
default:
dev_dbg(&pci->dev, "acp62 pci device not found\n");
return -ENODEV;
}
if (pci_enable_device(pci)) {
dev_err(&pci->dev, "pci_enable_device failed\n");
return -ENODEV;
}
ret = pci_request_regions(pci, "AMD ACP6.2 audio");
if (ret < 0) {
dev_err(&pci->dev, "pci_request_regions failed\n");
goto disable_pci;
}
adata = devm_kzalloc(&pci->dev, sizeof(struct acp62_dev_data),
GFP_KERNEL);
if (!adata) {
ret = -ENOMEM;
goto release_regions;
}
addr = pci_resource_start(pci, 0);
adata->acp62_base = devm_ioremap(&pci->dev, addr,
pci_resource_len(pci, 0));
if (!adata->acp62_base) {
ret = -ENOMEM;
goto release_regions;
}
pci_set_master(pci);
pci_set_drvdata(pci, adata);
return 0;
release_regions:
pci_release_regions(pci);
disable_pci:
pci_disable_device(pci);
return ret;
}
static void snd_acp62_remove(struct pci_dev *pci)
{
pci_release_regions(pci);
pci_disable_device(pci);
}
static const struct pci_device_id snd_acp62_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, ACP_DEVICE_ID),
.class = PCI_CLASS_MULTIMEDIA_OTHER << 8,
.class_mask = 0xffffff },
{ 0, },
};
MODULE_DEVICE_TABLE(pci, snd_acp62_ids);
static struct pci_driver ps_acp62_driver = {
.name = KBUILD_MODNAME,
.id_table = snd_acp62_ids,
.probe = snd_acp62_probe,
.remove = snd_acp62_remove,
};
module_pci_driver(ps_acp62_driver);
MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
MODULE_AUTHOR("Syed.SabaKareem@amd.com");
MODULE_DESCRIPTION("AMD ACP Pink Sardine PCI driver");
MODULE_LICENSE("GPL v2");