Unverified Commit 95e43a17 authored by Syed Saba Kareem's avatar Syed Saba Kareem Committed by Mark Brown
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ASoC: amd: add Pink Sardine ACP PCI driver 



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: default avatarSyed Saba Kareem <Syed.SabaKareem@amd.com>
Signed-off-by: default avatarVijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20220827165657.2343818-3-Syed.SabaKareem@amd.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 161bff51

sound/soc/amd/ps/acp62.h

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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);

}

sound/soc/amd/ps/pci-ps.c

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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");