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>
47 /* FIXME define these in <linux/pci_ids.h> */
48 #define PCI_VENDOR_ID_SYNOPSYS 0x16c3
49 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
53 struct platform_device *dwc3;
56 static int __devinit dwc3_pci_probe(struct pci_dev *pci,
57 const struct pci_device_id *id)
59 struct resource res[2];
60 struct platform_device *dwc3;
61 struct dwc3_pci *glue;
64 struct device *dev = &pci->dev;
66 glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
68 dev_err(dev, "not enough memory\n");
74 ret = pci_enable_device(pci);
76 dev_err(dev, "failed to enable pci device\n");
80 pci_set_power_state(pci, PCI_D0);
83 devid = dwc3_get_device_id();
87 dwc3 = platform_device_alloc("dwc3", devid);
89 dev_err(dev, "couldn't allocate dwc3 device\n");
93 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
95 res[0].start = pci_resource_start(pci, 0);
96 res[0].end = pci_resource_end(pci, 0);
97 res[0].name = "dwc_usb3";
98 res[0].flags = IORESOURCE_MEM;
100 res[1].start = pci->irq;
101 res[1].name = "dwc_usb3";
102 res[1].flags = IORESOURCE_IRQ;
104 ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
106 dev_err(dev, "couldn't add resources to dwc3 device\n");
110 pci_set_drvdata(pci, glue);
112 dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
114 dwc3->dev.dma_mask = dev->dma_mask;
115 dwc3->dev.dma_parms = dev->dma_parms;
116 dwc3->dev.parent = dev;
119 ret = platform_device_add(dwc3);
121 dev_err(dev, "failed to register dwc3 device\n");
128 pci_set_drvdata(pci, NULL);
129 platform_device_put(dwc3);
132 dwc3_put_device_id(devid);
135 pci_disable_device(pci);
140 static void __devexit dwc3_pci_remove(struct pci_dev *pci)
142 struct dwc3_pci *glue = pci_get_drvdata(pci);
144 dwc3_put_device_id(glue->dwc3->id);
145 platform_device_unregister(glue->dwc3);
146 pci_set_drvdata(pci, NULL);
147 pci_disable_device(pci);
150 static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = {
152 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
153 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
155 { } /* Terminating Entry */
157 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
159 static struct pci_driver dwc3_pci_driver = {
161 .id_table = dwc3_pci_id_table,
162 .probe = dwc3_pci_probe,
163 .remove = __devexit_p(dwc3_pci_remove),
166 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
167 MODULE_LICENSE("Dual BSD/GPL");
168 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
170 static int __devinit dwc3_pci_init(void)
172 return pci_register_driver(&dwc3_pci_driver);
174 module_init(dwc3_pci_init);
176 static void __exit dwc3_pci_exit(void)
178 pci_unregister_driver(&dwc3_pci_driver);
180 module_exit(dwc3_pci_exit);