1 /** 2 * dwc3-pci.c - PCI Specific glue layer 3 * 4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com 5 * 6 * Authors: Felipe Balbi <balbi@ti.com>, 7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de> 8 * 9 * This program is free software: you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 of 11 * the License as published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 */ 18 19 #include <linux/kernel.h> 20 #include <linux/module.h> 21 #include <linux/slab.h> 22 #include <linux/pci.h> 23 #include <linux/platform_device.h> 24 25 #include "platform_data.h" 26 27 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd 28 #define PCI_DEVICE_ID_INTEL_BYT 0x0f37 29 #define PCI_DEVICE_ID_INTEL_MRFLD 0x119e 30 #define PCI_DEVICE_ID_INTEL_BSW 0x22B7 31 #define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30 32 #define PCI_DEVICE_ID_INTEL_SPTH 0xa130 33 34 static int dwc3_pci_quirks(struct pci_dev *pdev) 35 { 36 if (pdev->vendor == PCI_VENDOR_ID_AMD && 37 pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { 38 struct dwc3_platform_data pdata; 39 40 memset(&pdata, 0, sizeof(pdata)); 41 42 pdata.has_lpm_erratum = true; 43 pdata.lpm_nyet_threshold = 0xf; 44 45 pdata.u2exit_lfps_quirk = true; 46 pdata.u2ss_inp3_quirk = true; 47 pdata.req_p1p2p3_quirk = true; 48 pdata.del_p1p2p3_quirk = true; 49 pdata.del_phy_power_chg_quirk = true; 50 pdata.lfps_filter_quirk = true; 51 pdata.rx_detect_poll_quirk = true; 52 53 pdata.tx_de_emphasis_quirk = true; 54 pdata.tx_de_emphasis = 1; 55 56 /* 57 * FIXME these quirks should be removed when AMD NL 58 * taps out 59 */ 60 pdata.disable_scramble_quirk = true; 61 pdata.dis_u3_susphy_quirk = true; 62 pdata.dis_u2_susphy_quirk = true; 63 64 return platform_device_add_data(pci_get_drvdata(pdev), &pdata, 65 sizeof(pdata)); 66 } 67 68 return 0; 69 } 70 71 static int dwc3_pci_probe(struct pci_dev *pci, 72 const struct pci_device_id *id) 73 { 74 struct resource res[2]; 75 struct platform_device *dwc3; 76 int ret; 77 struct device *dev = &pci->dev; 78 79 ret = pcim_enable_device(pci); 80 if (ret) { 81 dev_err(dev, "failed to enable pci device\n"); 82 return -ENODEV; 83 } 84 85 pci_set_master(pci); 86 87 dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); 88 if (!dwc3) { 89 dev_err(dev, "couldn't allocate dwc3 device\n"); 90 return -ENOMEM; 91 } 92 93 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); 94 95 res[0].start = pci_resource_start(pci, 0); 96 res[0].end = pci_resource_end(pci, 0); 97 res[0].name = "dwc_usb3"; 98 res[0].flags = IORESOURCE_MEM; 99 100 res[1].start = pci->irq; 101 res[1].name = "dwc_usb3"; 102 res[1].flags = IORESOURCE_IRQ; 103 104 ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res)); 105 if (ret) { 106 dev_err(dev, "couldn't add resources to dwc3 device\n"); 107 return ret; 108 } 109 110 pci_set_drvdata(pci, dwc3); 111 ret = dwc3_pci_quirks(pci); 112 if (ret) 113 goto err; 114 115 dwc3->dev.parent = dev; 116 117 ret = platform_device_add(dwc3); 118 if (ret) { 119 dev_err(dev, "failed to register dwc3 device\n"); 120 goto err; 121 } 122 123 return 0; 124 err: 125 platform_device_put(dwc3); 126 return ret; 127 } 128 129 static void dwc3_pci_remove(struct pci_dev *pci) 130 { 131 platform_device_unregister(pci_get_drvdata(pci)); 132 } 133 134 static const struct pci_device_id dwc3_pci_id_table[] = { 135 { 136 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, 137 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), 138 }, 139 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), }, 140 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), }, 141 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), }, 142 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), }, 143 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), }, 144 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), }, 145 { } /* Terminating Entry */ 146 }; 147 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); 148 149 static struct pci_driver dwc3_pci_driver = { 150 .name = "dwc3-pci", 151 .id_table = dwc3_pci_id_table, 152 .probe = dwc3_pci_probe, 153 .remove = dwc3_pci_remove, 154 }; 155 156 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); 157 MODULE_LICENSE("GPL v2"); 158 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); 159 160 module_pci_driver(dwc3_pci_driver); 161