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 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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.
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.
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
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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>
45 #include <linux/usb/otg.h>
46 #include <linux/usb/nop-usb-xceiv.h>
48 /* FIXME define these in <linux/pci_ids.h> */
49 #define PCI_VENDOR_ID_SYNOPSYS 0x16c3
50 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
54 struct platform_device *dwc3;
55 struct platform_device *usb2_phy;
56 struct platform_device *usb3_phy;
59 static int dwc3_pci_register_phys(struct dwc3_pci *glue)
61 struct nop_usb_xceiv_platform_data pdata;
62 struct platform_device *pdev;
65 memset(&pdata, 0x00, sizeof(pdata));
67 pdev = platform_device_alloc("nop_usb_xceiv", 0);
71 glue->usb2_phy = pdev;
72 pdata.type = USB_PHY_TYPE_USB2;
74 ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
78 pdev = platform_device_alloc("nop_usb_xceiv", 1);
84 glue->usb3_phy = pdev;
85 pdata.type = USB_PHY_TYPE_USB3;
87 ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata));
91 ret = platform_device_add(glue->usb2_phy);
95 ret = platform_device_add(glue->usb3_phy);
102 platform_device_del(glue->usb2_phy);
105 platform_device_put(glue->usb3_phy);
108 platform_device_put(glue->usb2_phy);
113 static int dwc3_pci_probe(struct pci_dev *pci,
114 const struct pci_device_id *id)
116 struct resource res[2];
117 struct platform_device *dwc3;
118 struct dwc3_pci *glue;
120 struct device *dev = &pci->dev;
122 glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
124 dev_err(dev, "not enough memory\n");
130 ret = pci_enable_device(pci);
132 dev_err(dev, "failed to enable pci device\n");
136 pci_set_power_state(pci, PCI_D0);
139 ret = dwc3_pci_register_phys(glue);
141 dev_err(dev, "couldn't register PHYs\n");
145 dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
147 dev_err(dev, "couldn't allocate dwc3 device\n");
152 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
154 res[0].start = pci_resource_start(pci, 0);
155 res[0].end = pci_resource_end(pci, 0);
156 res[0].name = "dwc_usb3";
157 res[0].flags = IORESOURCE_MEM;
159 res[1].start = pci->irq;
160 res[1].name = "dwc_usb3";
161 res[1].flags = IORESOURCE_IRQ;
163 ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
165 dev_err(dev, "couldn't add resources to dwc3 device\n");
169 pci_set_drvdata(pci, glue);
171 dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
173 dwc3->dev.dma_mask = dev->dma_mask;
174 dwc3->dev.dma_parms = dev->dma_parms;
175 dwc3->dev.parent = dev;
178 ret = platform_device_add(dwc3);
180 dev_err(dev, "failed to register dwc3 device\n");
187 pci_set_drvdata(pci, NULL);
188 platform_device_put(dwc3);
190 pci_disable_device(pci);
195 static void dwc3_pci_remove(struct pci_dev *pci)
197 struct dwc3_pci *glue = pci_get_drvdata(pci);
199 platform_device_unregister(glue->usb2_phy);
200 platform_device_unregister(glue->usb3_phy);
201 platform_device_unregister(glue->dwc3);
202 pci_set_drvdata(pci, NULL);
203 pci_disable_device(pci);
206 static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = {
208 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
209 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
211 { } /* Terminating Entry */
213 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
215 static struct pci_driver dwc3_pci_driver = {
217 .id_table = dwc3_pci_id_table,
218 .probe = dwc3_pci_probe,
219 .remove = dwc3_pci_remove,
222 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
223 MODULE_LICENSE("Dual BSD/GPL");
224 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
226 module_pci_driver(dwc3_pci_driver);