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