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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) /* * pci.c - DesignWare HS OTG Controller PCI driver * * Copyright (C) 2004-2013 Synopsys, Inc. */ /* * Provides the initialization and cleanup entry points for the DWC_otg PCI * driver */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/spinlock.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/slab.h> #include <linux/pci.h> #include <linux/usb.h> #include <linux/usb/hcd.h> #include <linux/usb/ch11.h> #include <linux/platform_device.h> #include <linux/usb/usb_phy_generic.h> #define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0 static const char dwc2_driver_name[] = "dwc2-pci"; struct dwc2_pci_glue { struct platform_device *dwc2; struct platform_device *phy; }; /** * dwc2_pci_remove() - Provides the cleanup entry points for the DWC_otg PCI * driver * * @pci: The programming view of DWC_otg PCI */ static void dwc2_pci_remove(struct pci_dev *pci) { struct dwc2_pci_glue *glue = pci_get_drvdata(pci); platform_device_unregister(glue->dwc2); usb_phy_generic_unregister(glue->phy); pci_set_drvdata(pci, NULL); } static int dwc2_pci_probe(struct pci_dev *pci, const struct pci_device_id *id) { struct resource res[2]; struct platform_device *dwc2; struct platform_device *phy; int ret; struct device *dev = &pci->dev; struct dwc2_pci_glue *glue; ret = pcim_enable_device(pci); if (ret) { dev_err(dev, "failed to enable pci device\n"); return -ENODEV; } pci_set_master(pci); phy = usb_phy_generic_register(); if (IS_ERR(phy)) { dev_err(dev, "error registering generic PHY (%ld)\n", PTR_ERR(phy)); return PTR_ERR(phy); } dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO); if (!dwc2) { dev_err(dev, "couldn't allocate dwc2 device\n"); ret = -ENOMEM; goto err; } 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 = "dwc2"; res[0].flags = IORESOURCE_MEM; res[1].start = pci->irq; res[1].name = "dwc2"; res[1].flags = IORESOURCE_IRQ; ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res)); if (ret) { dev_err(dev, "couldn't add resources to dwc2 device\n"); goto err; } dwc2->dev.parent = dev; glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); if (!glue) { ret = -ENOMEM; goto err; } ret = platform_device_add(dwc2); if (ret) { dev_err(dev, "failed to register dwc2 device\n"); goto err; } glue->phy = phy; glue->dwc2 = dwc2; pci_set_drvdata(pci, glue); return 0; err: usb_phy_generic_unregister(phy); platform_device_put(dwc2); return ret; } static const struct pci_device_id dwc2_pci_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG), }, { PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_USB_OTG), }, { /* end: all zeroes */ } }; MODULE_DEVICE_TABLE(pci, dwc2_pci_ids); static struct pci_driver dwc2_pci_driver = { .name = dwc2_driver_name, .id_table = dwc2_pci_ids, .probe = dwc2_pci_probe, .remove = dwc2_pci_remove, }; module_pci_driver(dwc2_pci_driver); MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue"); MODULE_AUTHOR("Synopsys, Inc."); MODULE_LICENSE("Dual BSD/GPL"); |