Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/drivers/usb/dwc3/dwc3-pci.c

  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 <linux/usb/otg.h>
 26 #include <linux/usb/usb_phy_generic.h>
 27 
 28 /* FIXME define these in <linux/pci_ids.h> */
 29 #define PCI_VENDOR_ID_SYNOPSYS          0x16c3
 30 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
 31 #define PCI_DEVICE_ID_INTEL_BYT         0x0f37
 32 #define PCI_DEVICE_ID_INTEL_MRFLD       0x119e
 33 
 34 struct dwc3_pci {
 35         struct device           *dev;
 36         struct platform_device  *dwc3;
 37         struct platform_device  *usb2_phy;
 38         struct platform_device  *usb3_phy;
 39 };
 40 
 41 static int dwc3_pci_register_phys(struct dwc3_pci *glue)
 42 {
 43         struct usb_phy_generic_platform_data pdata;
 44         struct platform_device  *pdev;
 45         int                     ret;
 46 
 47         memset(&pdata, 0x00, sizeof(pdata));
 48 
 49         pdev = platform_device_alloc("usb_phy_generic", 0);
 50         if (!pdev)
 51                 return -ENOMEM;
 52 
 53         glue->usb2_phy = pdev;
 54         pdata.type = USB_PHY_TYPE_USB2;
 55         pdata.gpio_reset = -1;
 56 
 57         ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
 58         if (ret)
 59                 goto err1;
 60 
 61         pdev = platform_device_alloc("usb_phy_generic", 1);
 62         if (!pdev) {
 63                 ret = -ENOMEM;
 64                 goto err1;
 65         }
 66 
 67         glue->usb3_phy = pdev;
 68         pdata.type = USB_PHY_TYPE_USB3;
 69 
 70         ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata));
 71         if (ret)
 72                 goto err2;
 73 
 74         ret = platform_device_add(glue->usb2_phy);
 75         if (ret)
 76                 goto err2;
 77 
 78         ret = platform_device_add(glue->usb3_phy);
 79         if (ret)
 80                 goto err3;
 81 
 82         return 0;
 83 
 84 err3:
 85         platform_device_del(glue->usb2_phy);
 86 
 87 err2:
 88         platform_device_put(glue->usb3_phy);
 89 
 90 err1:
 91         platform_device_put(glue->usb2_phy);
 92 
 93         return ret;
 94 }
 95 
 96 static int dwc3_pci_probe(struct pci_dev *pci,
 97                 const struct pci_device_id *id)
 98 {
 99         struct resource         res[2];
100         struct platform_device  *dwc3;
101         struct dwc3_pci         *glue;
102         int                     ret;
103         struct device           *dev = &pci->dev;
104 
105         glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
106         if (!glue) {
107                 dev_err(dev, "not enough memory\n");
108                 return -ENOMEM;
109         }
110 
111         glue->dev = dev;
112 
113         ret = pcim_enable_device(pci);
114         if (ret) {
115                 dev_err(dev, "failed to enable pci device\n");
116                 return -ENODEV;
117         }
118 
119         pci_set_master(pci);
120 
121         ret = dwc3_pci_register_phys(glue);
122         if (ret) {
123                 dev_err(dev, "couldn't register PHYs\n");
124                 return ret;
125         }
126 
127         dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
128         if (!dwc3) {
129                 dev_err(dev, "couldn't allocate dwc3 device\n");
130                 return -ENOMEM;
131         }
132 
133         memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
134 
135         res[0].start    = pci_resource_start(pci, 0);
136         res[0].end      = pci_resource_end(pci, 0);
137         res[0].name     = "dwc_usb3";
138         res[0].flags    = IORESOURCE_MEM;
139 
140         res[1].start    = pci->irq;
141         res[1].name     = "dwc_usb3";
142         res[1].flags    = IORESOURCE_IRQ;
143 
144         ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
145         if (ret) {
146                 dev_err(dev, "couldn't add resources to dwc3 device\n");
147                 return ret;
148         }
149 
150         pci_set_drvdata(pci, glue);
151 
152         dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
153 
154         dwc3->dev.dma_mask = dev->dma_mask;
155         dwc3->dev.dma_parms = dev->dma_parms;
156         dwc3->dev.parent = dev;
157         glue->dwc3 = dwc3;
158 
159         ret = platform_device_add(dwc3);
160         if (ret) {
161                 dev_err(dev, "failed to register dwc3 device\n");
162                 goto err3;
163         }
164 
165         return 0;
166 
167 err3:
168         platform_device_put(dwc3);
169         return ret;
170 }
171 
172 static void dwc3_pci_remove(struct pci_dev *pci)
173 {
174         struct dwc3_pci *glue = pci_get_drvdata(pci);
175 
176         platform_device_unregister(glue->dwc3);
177         platform_device_unregister(glue->usb2_phy);
178         platform_device_unregister(glue->usb3_phy);
179 }
180 
181 static const struct pci_device_id dwc3_pci_id_table[] = {
182         {
183                 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
184                                 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
185         },
186         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
187         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
188         {  }    /* Terminating Entry */
189 };
190 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
191 
192 #ifdef CONFIG_PM_SLEEP
193 static int dwc3_pci_suspend(struct device *dev)
194 {
195         struct pci_dev  *pci = to_pci_dev(dev);
196 
197         pci_disable_device(pci);
198 
199         return 0;
200 }
201 
202 static int dwc3_pci_resume(struct device *dev)
203 {
204         struct pci_dev  *pci = to_pci_dev(dev);
205         int             ret;
206 
207         ret = pci_enable_device(pci);
208         if (ret) {
209                 dev_err(dev, "can't re-enable device --> %d\n", ret);
210                 return ret;
211         }
212 
213         pci_set_master(pci);
214 
215         return 0;
216 }
217 #endif /* CONFIG_PM_SLEEP */
218 
219 static const struct dev_pm_ops dwc3_pci_dev_pm_ops = {
220         SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
221 };
222 
223 static struct pci_driver dwc3_pci_driver = {
224         .name           = "dwc3-pci",
225         .id_table       = dwc3_pci_id_table,
226         .probe          = dwc3_pci_probe,
227         .remove         = dwc3_pci_remove,
228         .driver         = {
229                 .pm     = &dwc3_pci_dev_pm_ops,
230         },
231 };
232 
233 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
234 MODULE_LICENSE("GPL v2");
235 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
236 
237 module_pci_driver(dwc3_pci_driver);
238 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us