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e16d5f1447
The dwc2 driver has everything we need to run in PCI mode except for pci_device_id driver_data parse. With that to set Loongson dwc2 element and added identified as PCI_VENDOR_ID_LOONGSON and PCI_DEVICE_ID_LOONGSON_DWC2 in dwc2_pci_ids, the Loongson dwc2 controller will work. Signed-off-by: Yinbo Zhu <zhuyinbo@loongson.cn> Link: https://lore.kernel.org/r/20230815065833.3375-1-zhuyinbo@loongson.cn Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
137 lines
2.9 KiB
C
137 lines
2.9 KiB
C
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
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/*
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* pci.c - DesignWare HS OTG Controller PCI driver
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*
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* Copyright (C) 2004-2013 Synopsys, Inc.
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*/
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/*
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* Provides the initialization and cleanup entry points for the DWC_otg PCI
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* driver
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/spinlock.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include <linux/usb.h>
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#include <linux/usb/hcd.h>
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#include <linux/usb/ch11.h>
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#include <linux/platform_device.h>
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#include <linux/usb/usb_phy_generic.h>
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#include "core.h"
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static const char dwc2_driver_name[] = "dwc2-pci";
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struct dwc2_pci_glue {
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struct platform_device *dwc2;
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struct platform_device *phy;
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};
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/**
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* dwc2_pci_remove() - Provides the cleanup entry points for the DWC_otg PCI
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* driver
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*
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* @pci: The programming view of DWC_otg PCI
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*/
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static void dwc2_pci_remove(struct pci_dev *pci)
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{
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struct dwc2_pci_glue *glue = pci_get_drvdata(pci);
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platform_device_unregister(glue->dwc2);
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usb_phy_generic_unregister(glue->phy);
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pci_set_drvdata(pci, NULL);
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}
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static int dwc2_pci_probe(struct pci_dev *pci,
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const struct pci_device_id *id)
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{
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struct resource res[2];
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struct platform_device *dwc2;
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struct platform_device *phy;
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int ret;
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struct device *dev = &pci->dev;
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struct dwc2_pci_glue *glue;
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ret = pcim_enable_device(pci);
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if (ret) {
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dev_err(dev, "failed to enable pci device\n");
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return -ENODEV;
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}
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pci_set_master(pci);
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phy = usb_phy_generic_register();
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if (IS_ERR(phy)) {
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dev_err(dev, "error registering generic PHY (%ld)\n",
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PTR_ERR(phy));
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return PTR_ERR(phy);
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}
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dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO);
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if (!dwc2) {
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dev_err(dev, "couldn't allocate dwc2 device\n");
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ret = -ENOMEM;
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goto err;
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}
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memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
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res[0].start = pci_resource_start(pci, 0);
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res[0].end = pci_resource_end(pci, 0);
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res[0].name = "dwc2";
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res[0].flags = IORESOURCE_MEM;
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res[1].start = pci->irq;
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res[1].name = "dwc2";
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res[1].flags = IORESOURCE_IRQ;
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ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res));
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if (ret) {
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dev_err(dev, "couldn't add resources to dwc2 device\n");
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goto err;
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}
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dwc2->dev.parent = dev;
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glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
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if (!glue) {
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ret = -ENOMEM;
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goto err;
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}
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ret = platform_device_add(dwc2);
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if (ret) {
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dev_err(dev, "failed to register dwc2 device\n");
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goto err;
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}
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glue->phy = phy;
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glue->dwc2 = dwc2;
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pci_set_drvdata(pci, glue);
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return 0;
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err:
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usb_phy_generic_unregister(phy);
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platform_device_put(dwc2);
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return ret;
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}
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static struct pci_driver dwc2_pci_driver = {
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.name = dwc2_driver_name,
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.id_table = dwc2_pci_ids,
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.probe = dwc2_pci_probe,
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.remove = dwc2_pci_remove,
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};
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module_pci_driver(dwc2_pci_driver);
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MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
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MODULE_AUTHOR("Synopsys, Inc.");
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MODULE_LICENSE("Dual BSD/GPL");
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