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1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2/*
3 * pci.c - DesignWare HS OTG Controller PCI driver
4 *
5 * Copyright (C) 2004-2013 Synopsys, Inc.
6 */
7
8/*
9 * Provides the initialization and cleanup entry points for the DWC_otg PCI
10 * driver
11 */
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <linux/moduleparam.h>
15#include <linux/spinlock.h>
16#include <linux/interrupt.h>
17#include <linux/io.h>
18#include <linux/slab.h>
19#include <linux/pci.h>
20#include <linux/usb.h>
21
22#include <linux/usb/hcd.h>
23#include <linux/usb/ch11.h>
24#include <linux/platform_device.h>
25#include <linux/usb/usb_phy_generic.h>
26
27#include "core.h"
28
29static const char dwc2_driver_name[] = "dwc2-pci";
30
31struct dwc2_pci_glue {
32 struct platform_device *dwc2;
33 struct platform_device *phy;
34};
35
36/**
37 * dwc2_pci_remove() - Provides the cleanup entry points for the DWC_otg PCI
38 * driver
39 *
40 * @pci: The programming view of DWC_otg PCI
41 */
42static void dwc2_pci_remove(struct pci_dev *pci)
43{
44 struct dwc2_pci_glue *glue = pci_get_drvdata(pci);
45
46 platform_device_unregister(glue->dwc2);
47 usb_phy_generic_unregister(glue->phy);
48 pci_set_drvdata(pci, NULL);
49}
50
51static int dwc2_pci_probe(struct pci_dev *pci,
52 const struct pci_device_id *id)
53{
54 struct resource res[2];
55 struct platform_device *dwc2;
56 struct platform_device *phy;
57 int ret;
58 struct device *dev = &pci->dev;
59 struct dwc2_pci_glue *glue;
60
61 ret = pcim_enable_device(pci);
62 if (ret) {
63 dev_err(dev, "failed to enable pci device\n");
64 return -ENODEV;
65 }
66
67 pci_set_master(pci);
68
69 phy = usb_phy_generic_register();
70 if (IS_ERR(phy)) {
71 dev_err(dev, "error registering generic PHY (%ld)\n",
72 PTR_ERR(phy));
73 return PTR_ERR(phy);
74 }
75
76 dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO);
77 if (!dwc2) {
78 dev_err(dev, "couldn't allocate dwc2 device\n");
79 ret = -ENOMEM;
80 goto err;
81 }
82
83 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
84
85 res[0].start = pci_resource_start(pci, 0);
86 res[0].end = pci_resource_end(pci, 0);
87 res[0].name = "dwc2";
88 res[0].flags = IORESOURCE_MEM;
89
90 res[1].start = pci->irq;
91 res[1].name = "dwc2";
92 res[1].flags = IORESOURCE_IRQ;
93
94 ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res));
95 if (ret) {
96 dev_err(dev, "couldn't add resources to dwc2 device\n");
97 goto err;
98 }
99
100 dwc2->dev.parent = dev;
101
102 glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
103 if (!glue) {
104 ret = -ENOMEM;
105 goto err;
106 }
107
108 ret = platform_device_add(dwc2);
109 if (ret) {
110 dev_err(dev, "failed to register dwc2 device\n");
111 goto err;
112 }
113
114 glue->phy = phy;
115 glue->dwc2 = dwc2;
116 pci_set_drvdata(pci, glue);
117
118 return 0;
119err:
120 usb_phy_generic_unregister(phy);
121 platform_device_put(dwc2);
122 return ret;
123}
124
125static struct pci_driver dwc2_pci_driver = {
126 .name = dwc2_driver_name,
127 .id_table = dwc2_pci_ids,
128 .probe = dwc2_pci_probe,
129 .remove = dwc2_pci_remove,
130};
131
132module_pci_driver(dwc2_pci_driver);
133
134MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
135MODULE_AUTHOR("Synopsys, Inc.");
136MODULE_LICENSE("Dual BSD/GPL");
1/*
2 * pci.c - DesignWare HS OTG Controller PCI driver
3 *
4 * Copyright (C) 2004-2013 Synopsys, Inc.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions, and the following disclaimer,
11 * without modification.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The names of the above-listed copyright holders may not be used
16 * to endorse or promote products derived from this software without
17 * specific prior written permission.
18 *
19 * ALTERNATIVELY, this software may be distributed under the terms of the
20 * GNU General Public License ("GPL") as published by the Free Software
21 * Foundation; either version 2 of the License, or (at your option) any
22 * later version.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
25 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
28 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
31 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
32 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
33 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
34 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
36
37/*
38 * Provides the initialization and cleanup entry points for the DWC_otg PCI
39 * driver
40 */
41#include <linux/kernel.h>
42#include <linux/module.h>
43#include <linux/moduleparam.h>
44#include <linux/spinlock.h>
45#include <linux/interrupt.h>
46#include <linux/io.h>
47#include <linux/slab.h>
48#include <linux/pci.h>
49#include <linux/usb.h>
50
51#include <linux/usb/hcd.h>
52#include <linux/usb/ch11.h>
53#include <linux/platform_device.h>
54#include <linux/usb/usb_phy_generic.h>
55
56#define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0
57
58static const char dwc2_driver_name[] = "dwc2-pci";
59
60struct dwc2_pci_glue {
61 struct platform_device *dwc2;
62 struct platform_device *phy;
63};
64
65static void dwc2_pci_remove(struct pci_dev *pci)
66{
67 struct dwc2_pci_glue *glue = pci_get_drvdata(pci);
68
69 platform_device_unregister(glue->dwc2);
70 usb_phy_generic_unregister(glue->phy);
71 kfree(glue);
72 pci_set_drvdata(pci, NULL);
73}
74
75static int dwc2_pci_probe(struct pci_dev *pci,
76 const struct pci_device_id *id)
77{
78 struct resource res[2];
79 struct platform_device *dwc2;
80 struct platform_device *phy;
81 int ret;
82 struct device *dev = &pci->dev;
83 struct dwc2_pci_glue *glue;
84
85 ret = pcim_enable_device(pci);
86 if (ret) {
87 dev_err(dev, "failed to enable pci device\n");
88 return -ENODEV;
89 }
90
91 pci_set_master(pci);
92
93 dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO);
94 if (!dwc2) {
95 dev_err(dev, "couldn't allocate dwc2 device\n");
96 return -ENOMEM;
97 }
98
99 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
100
101 res[0].start = pci_resource_start(pci, 0);
102 res[0].end = pci_resource_end(pci, 0);
103 res[0].name = "dwc2";
104 res[0].flags = IORESOURCE_MEM;
105
106 res[1].start = pci->irq;
107 res[1].name = "dwc2";
108 res[1].flags = IORESOURCE_IRQ;
109
110 ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res));
111 if (ret) {
112 dev_err(dev, "couldn't add resources to dwc2 device\n");
113 return ret;
114 }
115
116 dwc2->dev.parent = dev;
117
118 phy = usb_phy_generic_register();
119 if (IS_ERR(phy)) {
120 dev_err(dev, "error registering generic PHY (%ld)\n",
121 PTR_ERR(phy));
122 return PTR_ERR(phy);
123 }
124
125 ret = platform_device_add(dwc2);
126 if (ret) {
127 dev_err(dev, "failed to register dwc2 device\n");
128 goto err;
129 }
130
131 glue = kzalloc(sizeof(*glue), GFP_KERNEL);
132 if (!glue)
133 return -ENOMEM;
134
135 glue->phy = phy;
136 glue->dwc2 = dwc2;
137 pci_set_drvdata(pci, glue);
138
139 return 0;
140err:
141 usb_phy_generic_unregister(phy);
142 platform_device_put(dwc2);
143 return ret;
144}
145
146static const struct pci_device_id dwc2_pci_ids[] = {
147 {
148 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
149 },
150 {
151 PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
152 PCI_DEVICE_ID_STMICRO_USB_OTG),
153 },
154 { /* end: all zeroes */ }
155};
156MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);
157
158static struct pci_driver dwc2_pci_driver = {
159 .name = dwc2_driver_name,
160 .id_table = dwc2_pci_ids,
161 .probe = dwc2_pci_probe,
162 .remove = dwc2_pci_remove,
163};
164
165module_pci_driver(dwc2_pci_driver);
166
167MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
168MODULE_AUTHOR("Synopsys, Inc.");
169MODULE_LICENSE("Dual BSD/GPL");