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99882e3f PZ |
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> | |
9024c495 JY |
53 | #include <linux/platform_device.h> |
54 | #include <linux/usb/usb_phy_generic.h> | |
99882e3f | 55 | |
99882e3f PZ |
56 | #define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0 |
57 | ||
9024c495 JY |
58 | static const char dwc2_driver_name[] = "dwc2-pci"; |
59 | ||
60 | struct dwc2_pci_glue { | |
61 | struct platform_device *dwc2; | |
62 | struct platform_device *phy; | |
99882e3f PZ |
63 | }; |
64 | ||
9024c495 | 65 | static void dwc2_pci_remove(struct pci_dev *pci) |
99882e3f | 66 | { |
9024c495 | 67 | struct dwc2_pci_glue *glue = pci_get_drvdata(pci); |
99882e3f | 68 | |
9024c495 JY |
69 | platform_device_unregister(glue->dwc2); |
70 | usb_phy_generic_unregister(glue->phy); | |
71 | kfree(glue); | |
72 | pci_set_drvdata(pci, NULL); | |
99882e3f PZ |
73 | } |
74 | ||
9024c495 JY |
75 | static int dwc2_pci_probe(struct pci_dev *pci, |
76 | const struct pci_device_id *id) | |
99882e3f | 77 | { |
9024c495 JY |
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); | |
99882e3f | 92 | |
9024c495 JY |
93 | dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO); |
94 | if (!dwc2) { | |
95 | dev_err(dev, "couldn't allocate dwc2 device\n"); | |
99882e3f | 96 | return -ENOMEM; |
9024c495 | 97 | } |
99882e3f | 98 | |
9024c495 | 99 | memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); |
99882e3f | 100 | |
9024c495 JY |
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; | |
99882e3f | 105 | |
9024c495 JY |
106 | res[1].start = pci->irq; |
107 | res[1].name = "dwc2"; | |
108 | res[1].flags = IORESOURCE_IRQ; | |
99882e3f | 109 | |
9024c495 JY |
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 | } | |
99882e3f | 115 | |
9024c495 | 116 | dwc2->dev.parent = dev; |
db8178c3 | 117 | |
9024c495 JY |
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); | |
99882e3f PZ |
123 | } |
124 | ||
9024c495 JY |
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); | |
99882e3f | 138 | |
9024c495 JY |
139 | return 0; |
140 | err: | |
141 | usb_phy_generic_unregister(phy); | |
142 | platform_device_put(dwc2); | |
143 | return ret; | |
99882e3f PZ |
144 | } |
145 | ||
41e043fc | 146 | static const struct pci_device_id dwc2_pci_ids[] = { |
99882e3f PZ |
147 | { |
148 | PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG), | |
149 | }, | |
25f73e62 FV |
150 | { |
151 | PCI_DEVICE(PCI_VENDOR_ID_STMICRO, | |
152 | PCI_DEVICE_ID_STMICRO_USB_OTG), | |
153 | }, | |
99882e3f PZ |
154 | { /* end: all zeroes */ } |
155 | }; | |
156 | MODULE_DEVICE_TABLE(pci, dwc2_pci_ids); | |
157 | ||
158 | static struct pci_driver dwc2_pci_driver = { | |
159 | .name = dwc2_driver_name, | |
160 | .id_table = dwc2_pci_ids, | |
9024c495 JY |
161 | .probe = dwc2_pci_probe, |
162 | .remove = dwc2_pci_remove, | |
99882e3f PZ |
163 | }; |
164 | ||
165 | module_pci_driver(dwc2_pci_driver); | |
166 | ||
167 | MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue"); | |
168 | MODULE_AUTHOR("Synopsys, Inc."); | |
169 | MODULE_LICENSE("Dual BSD/GPL"); |