2 * dwc3-pci.c - PCI Specific glue layer
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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_generic.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
33 #define PCI_DEVICE_ID_INTEL_BSW 0x22B7
37 struct platform_device *dwc3;
38 struct platform_device *usb2_phy;
39 struct platform_device *usb3_phy;
42 static int dwc3_pci_register_phys(struct dwc3_pci *glue)
44 struct usb_phy_generic_platform_data pdata;
45 struct platform_device *pdev;
48 memset(&pdata, 0x00, sizeof(pdata));
50 pdev = platform_device_alloc("usb_phy_generic", 0);
54 glue->usb2_phy = pdev;
55 pdata.type = USB_PHY_TYPE_USB2;
56 pdata.gpio_reset = -1;
58 ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
62 pdev = platform_device_alloc("usb_phy_generic", 1);
68 glue->usb3_phy = pdev;
69 pdata.type = USB_PHY_TYPE_USB3;
71 ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata));
75 ret = platform_device_add(glue->usb2_phy);
79 ret = platform_device_add(glue->usb3_phy);
86 platform_device_del(glue->usb2_phy);
89 platform_device_put(glue->usb3_phy);
92 platform_device_put(glue->usb2_phy);
97 static int dwc3_pci_probe(struct pci_dev *pci,
98 const struct pci_device_id *id)
100 struct resource res[2];
101 struct platform_device *dwc3;
102 struct dwc3_pci *glue;
104 struct device *dev = &pci->dev;
106 glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
112 ret = pcim_enable_device(pci);
114 dev_err(dev, "failed to enable pci device\n");
120 ret = dwc3_pci_register_phys(glue);
122 dev_err(dev, "couldn't register PHYs\n");
126 dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
128 dev_err(dev, "couldn't allocate dwc3 device\n");
132 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
134 res[0].start = pci_resource_start(pci, 0);
135 res[0].end = pci_resource_end(pci, 0);
136 res[0].name = "dwc_usb3";
137 res[0].flags = IORESOURCE_MEM;
139 res[1].start = pci->irq;
140 res[1].name = "dwc_usb3";
141 res[1].flags = IORESOURCE_IRQ;
143 ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
145 dev_err(dev, "couldn't add resources to dwc3 device\n");
149 pci_set_drvdata(pci, glue);
151 dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
153 dwc3->dev.dma_mask = dev->dma_mask;
154 dwc3->dev.dma_parms = dev->dma_parms;
155 dwc3->dev.parent = dev;
158 ret = platform_device_add(dwc3);
160 dev_err(dev, "failed to register dwc3 device\n");
167 platform_device_put(dwc3);
171 static void dwc3_pci_remove(struct pci_dev *pci)
173 struct dwc3_pci *glue = pci_get_drvdata(pci);
175 platform_device_unregister(glue->dwc3);
176 platform_device_unregister(glue->usb2_phy);
177 platform_device_unregister(glue->usb3_phy);
180 static const struct pci_device_id dwc3_pci_id_table[] = {
182 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
183 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
185 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
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 */
190 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
192 #ifdef CONFIG_PM_SLEEP
193 static int dwc3_pci_suspend(struct device *dev)
195 struct pci_dev *pci = to_pci_dev(dev);
197 pci_disable_device(pci);
202 static int dwc3_pci_resume(struct device *dev)
204 struct pci_dev *pci = to_pci_dev(dev);
207 ret = pci_enable_device(pci);
209 dev_err(dev, "can't re-enable device --> %d\n", ret);
217 #endif /* CONFIG_PM_SLEEP */
219 static const struct dev_pm_ops dwc3_pci_dev_pm_ops = {
220 SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
223 static struct pci_driver dwc3_pci_driver = {
225 .id_table = dwc3_pci_id_table,
226 .probe = dwc3_pci_probe,
227 .remove = dwc3_pci_remove,
229 .pm = &dwc3_pci_dev_pm_ops,
233 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
234 MODULE_LICENSE("GPL v2");
235 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
237 module_pci_driver(dwc3_pci_driver);