| // SPDX-License-Identifier: GPL-2.0 |
| /** |
| * dwc3-haps.c - Synopsys HAPS PCI Specific glue layer |
| * |
| * Copyright (C) 2018 Synopsys, Inc. |
| * |
| * Authors: Thinh Nguyen <thinhn@synopsys.com>, |
| * John Youn <johnyoun@synopsys.com> |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <linux/pci.h> |
| #include <linux/platform_device.h> |
| #include <linux/property.h> |
| |
| /** |
| * struct dwc3_haps - Driver private structure |
| * @dwc3: child dwc3 platform_device |
| * @pci: our link to PCI bus |
| */ |
| struct dwc3_haps { |
| struct platform_device *dwc3; |
| struct pci_dev *pci; |
| }; |
| |
| static const struct property_entry initial_properties[] = { |
| PROPERTY_ENTRY_BOOL("snps,usb3_lpm_capable"), |
| PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"), |
| PROPERTY_ENTRY_BOOL("snps,dis_enblslpm_quirk"), |
| PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), |
| { }, |
| }; |
| |
| static int dwc3_haps_probe(struct pci_dev *pci, |
| const struct pci_device_id *id) |
| { |
| struct dwc3_haps *dwc; |
| struct device *dev = &pci->dev; |
| struct resource res[2]; |
| int ret; |
| |
| ret = pcim_enable_device(pci); |
| if (ret) { |
| dev_err(dev, "failed to enable pci device\n"); |
| return -ENODEV; |
| } |
| |
| pci_set_master(pci); |
| |
| dwc = devm_kzalloc(dev, sizeof(*dwc), GFP_KERNEL); |
| if (!dwc) |
| return -ENOMEM; |
| |
| dwc->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); |
| if (!dwc->dwc3) |
| return -ENOMEM; |
| |
| memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); |
| |
| res[0].start = pci_resource_start(pci, 0); |
| res[0].end = pci_resource_end(pci, 0); |
| res[0].name = "dwc_usb3"; |
| res[0].flags = IORESOURCE_MEM; |
| |
| res[1].start = pci->irq; |
| res[1].name = "dwc_usb3"; |
| res[1].flags = IORESOURCE_IRQ; |
| |
| ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res)); |
| if (ret) { |
| dev_err(dev, "couldn't add resources to dwc3 device\n"); |
| goto err; |
| } |
| |
| dwc->pci = pci; |
| dwc->dwc3->dev.parent = dev; |
| |
| ret = platform_device_add_properties(dwc->dwc3, initial_properties); |
| if (ret) |
| goto err; |
| |
| ret = platform_device_add(dwc->dwc3); |
| if (ret) { |
| dev_err(dev, "failed to register dwc3 device\n"); |
| goto err; |
| } |
| |
| pci_set_drvdata(pci, dwc); |
| |
| return 0; |
| err: |
| platform_device_put(dwc->dwc3); |
| return ret; |
| } |
| |
| static void dwc3_haps_remove(struct pci_dev *pci) |
| { |
| struct dwc3_haps *dwc = pci_get_drvdata(pci); |
| |
| platform_device_unregister(dwc->dwc3); |
| } |
| |
| static const struct pci_device_id dwc3_haps_id_table[] = { |
| { |
| PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, |
| PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), |
| }, |
| { |
| PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, |
| PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI), |
| }, |
| { |
| PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, |
| PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31), |
| }, |
| { } /* Terminating Entry */ |
| }; |
| MODULE_DEVICE_TABLE(pci, dwc3_haps_id_table); |
| |
| static struct pci_driver dwc3_haps_driver = { |
| .name = "dwc3-haps", |
| .id_table = dwc3_haps_id_table, |
| .probe = dwc3_haps_probe, |
| .remove = dwc3_haps_remove, |
| }; |
| |
| MODULE_AUTHOR("Thinh Nguyen <thinhn@synopsys.com>"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_DESCRIPTION("Synopsys HAPS PCI Glue Layer"); |
| |
| module_pci_driver(dwc3_haps_driver); |