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 __devinit 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 __devinit 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 int devid; 123 struct device *dev = &pci->dev; 124 125 glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); 126 if (!glue) { 127 dev_err(dev, "not enough memory\n"); 128 return -ENOMEM; 129 } 130 131 glue->dev = dev; 132 133 ret = pci_enable_device(pci); 134 if (ret) { 135 dev_err(dev, "failed to enable pci device\n"); 136 return -ENODEV; 137 } 138 139 pci_set_power_state(pci, PCI_D0); 140 pci_set_master(pci); 141 142 ret = dwc3_pci_register_phys(glue); 143 if (ret) { 144 dev_err(dev, "couldn't register PHYs\n"); 145 return ret; 146 } 147 148 devid = dwc3_get_device_id(); 149 if (devid < 0) { 150 ret = -ENOMEM; 151 goto err1; 152 } 153 154 dwc3 = platform_device_alloc("dwc3", devid); 155 if (!dwc3) { 156 dev_err(dev, "couldn't allocate dwc3 device\n"); 157 ret = -ENOMEM; 158 goto err1; 159 } 160 161 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); 162 163 res[0].start = pci_resource_start(pci, 0); 164 res[0].end = pci_resource_end(pci, 0); 165 res[0].name = "dwc_usb3"; 166 res[0].flags = IORESOURCE_MEM; 167 168 res[1].start = pci->irq; 169 res[1].name = "dwc_usb3"; 170 res[1].flags = IORESOURCE_IRQ; 171 172 ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res)); 173 if (ret) { 174 dev_err(dev, "couldn't add resources to dwc3 device\n"); 175 goto err2; 176 } 177 178 pci_set_drvdata(pci, glue); 179 180 dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask); 181 182 dwc3->dev.dma_mask = dev->dma_mask; 183 dwc3->dev.dma_parms = dev->dma_parms; 184 dwc3->dev.parent = dev; 185 glue->dwc3 = dwc3; 186 187 ret = platform_device_add(dwc3); 188 if (ret) { 189 dev_err(dev, "failed to register dwc3 device\n"); 190 goto err3; 191 } 192 193 return 0; 194 195 err3: 196 pci_set_drvdata(pci, NULL); 197 platform_device_put(dwc3); 198 199 err2: 200 dwc3_put_device_id(devid); 201 202 err1: 203 pci_disable_device(pci); 204 205 return ret; 206 } 207 208 static void __devexit dwc3_pci_remove(struct pci_dev *pci) 209 { 210 struct dwc3_pci *glue = pci_get_drvdata(pci); 211 212 platform_device_unregister(glue->usb2_phy); 213 platform_device_unregister(glue->usb3_phy); 214 dwc3_put_device_id(glue->dwc3->id); 215 platform_device_unregister(glue->dwc3); 216 pci_set_drvdata(pci, NULL); 217 pci_disable_device(pci); 218 } 219 220 static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = { 221 { 222 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, 223 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), 224 }, 225 { } /* Terminating Entry */ 226 }; 227 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); 228 229 static struct pci_driver dwc3_pci_driver = { 230 .name = "dwc3-pci", 231 .id_table = dwc3_pci_id_table, 232 .probe = dwc3_pci_probe, 233 .remove = __devexit_p(dwc3_pci_remove), 234 }; 235 236 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); 237 MODULE_LICENSE("Dual BSD/GPL"); 238 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); 239 240 module_pci_driver(dwc3_pci_driver); 241