2 * dwc3-pci.c - PCI Specific glue layer
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
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.
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.
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>
25 #include <linux/usb/otg.h>
26 #include <linux/usb/usb_phy_gen_xceiv.h>
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
36 struct platform_device *dwc3;
37 struct platform_device *usb2_phy;
38 struct platform_device *usb3_phy;
41 static int dwc3_pci_register_phys(struct dwc3_pci *glue)
43 struct usb_phy_gen_xceiv_platform_data pdata;
44 struct platform_device *pdev;
47 memset(&pdata, 0x00, sizeof(pdata));
49 pdev = platform_device_alloc("usb_phy_gen_xceiv", 0);
53 glue->usb2_phy = pdev;
54 pdata.type = USB_PHY_TYPE_USB2;
55 pdata.gpio_reset = -1;
57 ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
61 pdev = platform_device_alloc("usb_phy_gen_xceiv", 1);
67 glue->usb3_phy = pdev;
68 pdata.type = USB_PHY_TYPE_USB3;
70 ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata));
74 ret = platform_device_add(glue->usb2_phy);
78 ret = platform_device_add(glue->usb3_phy);
85 platform_device_del(glue->usb2_phy);
88 platform_device_put(glue->usb3_phy);
91 platform_device_put(glue->usb2_phy);
96 static int dwc3_pci_probe(struct pci_dev *pci,
97 const struct pci_device_id *id)
99 struct resource res[2];
100 struct platform_device *dwc3;
101 struct dwc3_pci *glue;
103 struct device *dev = &pci->dev;
105 glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
107 dev_err(dev, "not enough memory\n");
113 ret = pci_enable_device(pci);
115 dev_err(dev, "failed to enable pci device\n");
121 ret = dwc3_pci_register_phys(glue);
123 dev_err(dev, "couldn't register PHYs\n");
127 dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
129 dev_err(dev, "couldn't allocate dwc3 device\n");
134 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
136 res[0].start = pci_resource_start(pci, 0);
137 res[0].end = pci_resource_end(pci, 0);
138 res[0].name = "dwc_usb3";
139 res[0].flags = IORESOURCE_MEM;
141 res[1].start = pci->irq;
142 res[1].name = "dwc_usb3";
143 res[1].flags = IORESOURCE_IRQ;
145 ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
147 dev_err(dev, "couldn't add resources to dwc3 device\n");
151 pci_set_drvdata(pci, glue);
153 dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
155 dwc3->dev.dma_mask = dev->dma_mask;
156 dwc3->dev.dma_parms = dev->dma_parms;
157 dwc3->dev.parent = dev;
160 ret = platform_device_add(dwc3);
162 dev_err(dev, "failed to register dwc3 device\n");
169 platform_device_put(dwc3);
171 pci_disable_device(pci);
176 static void dwc3_pci_remove(struct pci_dev *pci)
178 struct dwc3_pci *glue = pci_get_drvdata(pci);
180 platform_device_unregister(glue->dwc3);
181 platform_device_unregister(glue->usb2_phy);
182 platform_device_unregister(glue->usb3_phy);
183 pci_disable_device(pci);
186 static const struct pci_device_id dwc3_pci_id_table[] = {
188 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
189 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
191 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
192 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
193 { } /* Terminating Entry */
195 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
197 #ifdef CONFIG_PM_SLEEP
198 static int dwc3_pci_suspend(struct device *dev)
200 struct pci_dev *pci = to_pci_dev(dev);
202 pci_disable_device(pci);
207 static int dwc3_pci_resume(struct device *dev)
209 struct pci_dev *pci = to_pci_dev(dev);
212 ret = pci_enable_device(pci);
214 dev_err(dev, "can't re-enable device --> %d\n", ret);
222 #endif /* CONFIG_PM_SLEEP */
224 static const struct dev_pm_ops dwc3_pci_dev_pm_ops = {
225 SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
228 static struct pci_driver dwc3_pci_driver = {
230 .id_table = dwc3_pci_id_table,
231 .probe = dwc3_pci_probe,
232 .remove = dwc3_pci_remove,
234 .pm = &dwc3_pci_dev_pm_ops,
239 MODULE_LICENSE("GPL v2");
240 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
242 module_pci_driver(dwc3_pci_driver);