1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
3 * pci.c - DesignWare HS OTG Controller PCI driver
5 * Copyright (C) 2004-2013 Synopsys, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The names of the above-listed copyright holders may not be used
17 * to endorse or promote products derived from this software without
18 * specific prior written permission.
20 * ALTERNATIVELY, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") as published by the Free Software
22 * Foundation; either version 2 of the License, or (at your option) any
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
26 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
27 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
29 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
30 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
31 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
32 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 * Provides the initialization and cleanup entry points for the DWC_otg PCI
42 #include <linux/kernel.h>
43 #include <linux/module.h>
44 #include <linux/moduleparam.h>
45 #include <linux/spinlock.h>
46 #include <linux/interrupt.h>
48 #include <linux/slab.h>
49 #include <linux/pci.h>
50 #include <linux/usb.h>
52 #include <linux/usb/hcd.h>
53 #include <linux/usb/ch11.h>
54 #include <linux/platform_device.h>
55 #include <linux/usb/usb_phy_generic.h>
57 #define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0
59 static const char dwc2_driver_name[] = "dwc2-pci";
61 struct dwc2_pci_glue {
62 struct platform_device *dwc2;
63 struct platform_device *phy;
66 static int dwc2_pci_quirks(struct pci_dev *pdev, struct platform_device *dwc2)
68 if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
69 pdev->device == PCI_PRODUCT_ID_HAPS_HSOTG) {
70 struct property_entry properties[] = {
74 return platform_device_add_properties(dwc2, properties);
80 static void dwc2_pci_remove(struct pci_dev *pci)
82 struct dwc2_pci_glue *glue = pci_get_drvdata(pci);
84 platform_device_unregister(glue->dwc2);
85 usb_phy_generic_unregister(glue->phy);
87 pci_set_drvdata(pci, NULL);
90 static int dwc2_pci_probe(struct pci_dev *pci,
91 const struct pci_device_id *id)
93 struct resource res[2];
94 struct platform_device *dwc2;
95 struct platform_device *phy;
97 struct device *dev = &pci->dev;
98 struct dwc2_pci_glue *glue;
100 ret = pcim_enable_device(pci);
102 dev_err(dev, "failed to enable pci device\n");
108 dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO);
110 dev_err(dev, "couldn't allocate dwc2 device\n");
114 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
116 res[0].start = pci_resource_start(pci, 0);
117 res[0].end = pci_resource_end(pci, 0);
118 res[0].name = "dwc2";
119 res[0].flags = IORESOURCE_MEM;
121 res[1].start = pci->irq;
122 res[1].name = "dwc2";
123 res[1].flags = IORESOURCE_IRQ;
125 ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res));
127 dev_err(dev, "couldn't add resources to dwc2 device\n");
131 dwc2->dev.parent = dev;
133 phy = usb_phy_generic_register();
135 dev_err(dev, "error registering generic PHY (%ld)\n",
140 ret = dwc2_pci_quirks(pci, dwc2);
144 ret = platform_device_add(dwc2);
146 dev_err(dev, "failed to register dwc2 device\n");
150 glue = kzalloc(sizeof(*glue), GFP_KERNEL);
156 pci_set_drvdata(pci, glue);
160 usb_phy_generic_unregister(phy);
161 platform_device_put(dwc2);
165 static const struct pci_device_id dwc2_pci_ids[] = {
167 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
170 PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
171 PCI_DEVICE_ID_STMICRO_USB_OTG),
173 { /* end: all zeroes */ }
175 MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);
177 static struct pci_driver dwc2_pci_driver = {
178 .name = dwc2_driver_name,
179 .id_table = dwc2_pci_ids,
180 .probe = dwc2_pci_probe,
181 .remove = dwc2_pci_remove,
184 module_pci_driver(dwc2_pci_driver);
186 MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
187 MODULE_AUTHOR("Synopsys, Inc.");
188 MODULE_LICENSE("Dual BSD/GPL");