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 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The names of the above-listed copyright holders may not be used 19 * to endorse or promote products derived from this software without 20 * specific prior written permission. 21 * 22 * ALTERNATIVELY, this software may be distributed under the terms of the 23 * GNU General Public License ("GPL") version 2, as published by the Free 24 * Software Foundation. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 27 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 28 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 30 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 31 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 32 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 33 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 34 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 35 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 36 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <linux/kernel.h> 40 #include <linux/module.h> 41 #include <linux/slab.h> 42 #include <linux/pci.h> 43 #include <linux/platform_device.h> 44 45 #include <linux/usb/otg.h> 46 #include <linux/usb/nop-usb-xceiv.h> 47 48 #include "core.h" 49 50 /* FIXME define these in <linux/pci_ids.h> */ 51 #define PCI_VENDOR_ID_SYNOPSYS 0x16c3 52 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd 53 54 struct dwc3_pci { 55 struct device *dev; 56 struct platform_device *dwc3; 57 struct platform_device *usb2_phy; 58 struct platform_device *usb3_phy; 59 }; 60 61 static int dwc3_pci_register_phys(struct dwc3_pci *glue) 62 { 63 struct nop_usb_xceiv_platform_data pdata; 64 struct platform_device *pdev; 65 int ret; 66 67 memset(&pdata, 0x00, sizeof(pdata)); 68 69 pdev = platform_device_alloc("nop_usb_xceiv", 0); 70 if (!pdev) 71 return -ENOMEM; 72 73 glue->usb2_phy = pdev; 74 pdata.type = USB_PHY_TYPE_USB2; 75 76 ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata)); 77 if (ret) 78 goto err1; 79 80 pdev = platform_device_alloc("nop_usb_xceiv", 1); 81 if (!pdev) { 82 ret = -ENOMEM; 83 goto err1; 84 } 85 86 glue->usb3_phy = pdev; 87 pdata.type = USB_PHY_TYPE_USB3; 88 89 ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata)); 90 if (ret) 91 goto err2; 92 93 ret = platform_device_add(glue->usb2_phy); 94 if (ret) 95 goto err2; 96 97 ret = platform_device_add(glue->usb3_phy); 98 if (ret) 99 goto err3; 100 101 return 0; 102 103 err3: 104 platform_device_del(glue->usb2_phy); 105 106 err2: 107 platform_device_put(glue->usb3_phy); 108 109 err1: 110 platform_device_put(glue->usb2_phy); 111 112 return ret; 113 } 114 115 static int dwc3_pci_probe(struct pci_dev *pci, 116 const struct pci_device_id *id) 117 { 118 struct resource res[2]; 119 struct platform_device *dwc3; 120 struct dwc3_pci *glue; 121 int ret = -ENOMEM; 122 struct device *dev = &pci->dev; 123 124 glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); 125 if (!glue) { 126 dev_err(dev, "not enough memory\n"); 127 return -ENOMEM; 128 } 129 130 glue->dev = dev; 131 132 ret = pci_enable_device(pci); 133 if (ret) { 134 dev_err(dev, "failed to enable pci device\n"); 135 return -ENODEV; 136 } 137 138 pci_set_power_state(pci, PCI_D0); 139 pci_set_master(pci); 140 141 ret = dwc3_pci_register_phys(glue); 142 if (ret) { 143 dev_err(dev, "couldn't register PHYs\n"); 144 return ret; 145 } 146 147 dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); 148 if (!dwc3) { 149 dev_err(dev, "couldn't allocate dwc3 device\n"); 150 ret = -ENOMEM; 151 goto err1; 152 } 153 154 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); 155 156 res[0].start = pci_resource_start(pci, 0); 157 res[0].end = pci_resource_end(pci, 0); 158 res[0].name = "dwc_usb3"; 159 res[0].flags = IORESOURCE_MEM; 160 161 res[1].start = pci->irq; 162 res[1].name = "dwc_usb3"; 163 res[1].flags = IORESOURCE_IRQ; 164 165 ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res)); 166 if (ret) { 167 dev_err(dev, "couldn't add resources to dwc3 device\n"); 168 goto err1; 169 } 170 171 pci_set_drvdata(pci, glue); 172 173 dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask); 174 175 dwc3->dev.dma_mask = dev->dma_mask; 176 dwc3->dev.dma_parms = dev->dma_parms; 177 dwc3->dev.parent = dev; 178 glue->dwc3 = dwc3; 179 180 ret = platform_device_add(dwc3); 181 if (ret) { 182 dev_err(dev, "failed to register dwc3 device\n"); 183 goto err3; 184 } 185 186 return 0; 187 188 err3: 189 pci_set_drvdata(pci, NULL); 190 platform_device_put(dwc3); 191 err1: 192 pci_disable_device(pci); 193 194 return ret; 195 } 196 197 static void dwc3_pci_remove(struct pci_dev *pci) 198 { 199 struct dwc3_pci *glue = pci_get_drvdata(pci); 200 201 platform_device_unregister(glue->usb2_phy); 202 platform_device_unregister(glue->usb3_phy); 203 platform_device_unregister(glue->dwc3); 204 pci_set_drvdata(pci, NULL); 205 pci_disable_device(pci); 206 } 207 208 static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = { 209 { 210 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, 211 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), 212 }, 213 { } /* Terminating Entry */ 214 }; 215 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); 216 217 static struct pci_driver dwc3_pci_driver = { 218 .name = "dwc3-pci", 219 .id_table = dwc3_pci_id_table, 220 .probe = dwc3_pci_probe, 221 .remove = dwc3_pci_remove, 222 }; 223 224 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); 225 MODULE_LICENSE("Dual BSD/GPL"); 226 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); 227 228 module_pci_driver(dwc3_pci_driver); 229