1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
* ci13xxx_pci.c - MIPS USB IP core family device controller
*
* Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
*
* Author: David Lopo
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/usb/gadget.h>
#include "ci13xxx_udc.h"
/* driver name */
#define UDC_DRIVER_NAME "ci13xxx_pci"
/******************************************************************************
* PCI block
*****************************************************************************/
struct ci13xxx_udc_driver pci_driver = {
.name = UDC_DRIVER_NAME,
.capoffset = DEF_CAPOFFSET,
};
struct ci13xxx_udc_driver langwell_pci_driver = {
.name = UDC_DRIVER_NAME,
.capoffset = 0,
};
/**
* ci13xxx_pci_probe: PCI probe
* @pdev: USB device controller being probed
* @id: PCI hotplug ID connecting controller to UDC framework
*
* This function returns an error code
* Allocates basic PCI resources for this USB device controller, and then
* invokes the udc_probe() method to start the UDC associated with it
*/
static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
struct ci13xxx_udc_driver *driver = (void *)id->driver_data;
struct platform_device *plat_ci;
struct resource res[3];
int retval = 0, nres = 2;
if (!driver) {
dev_err(&pdev->dev, "device doesn't provide driver data\n");
return -ENODEV;
}
retval = pci_enable_device(pdev);
if (retval)
goto done;
if (!pdev->irq) {
dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!");
retval = -ENODEV;
goto disable_device;
}
pci_set_power_state(pdev, PCI_D0);
pci_set_master(pdev);
pci_try_set_mwi(pdev);
plat_ci = platform_device_alloc("ci_udc", -1);
if (!plat_ci) {
dev_err(&pdev->dev, "can't allocate ci_udc platform device\n");
retval = -ENOMEM;
goto disable_device;
}
memset(res, 0, sizeof(res));
res[0].start = pci_resource_start(pdev, 0);
res[0].end = pci_resource_end(pdev, 0);
res[0].flags = IORESOURCE_MEM;
res[1].start = pdev->irq;
res[1].flags = IORESOURCE_IRQ;
retval = platform_device_add_resources(plat_ci, res, nres);
if (retval) {
dev_err(&pdev->dev, "can't add resources to platform device\n");
goto put_platform;
}
retval = platform_device_add_data(plat_ci, driver, sizeof(*driver));
if (retval)
goto put_platform;
dma_set_coherent_mask(&plat_ci->dev, pdev->dev.coherent_dma_mask);
plat_ci->dev.dma_mask = pdev->dev.dma_mask;
plat_ci->dev.dma_parms = pdev->dev.dma_parms;
plat_ci->dev.parent = &pdev->dev;
pci_set_drvdata(pdev, plat_ci);
retval = platform_device_add(plat_ci);
if (retval)
goto put_platform;
return 0;
put_platform:
pci_set_drvdata(pdev, NULL);
platform_device_put(plat_ci);
disable_device:
pci_disable_device(pdev);
done:
return retval;
}
/**
* ci13xxx_pci_remove: PCI remove
* @pdev: USB Device Controller being removed
*
* Reverses the effect of ci13xxx_pci_probe(),
* first invoking the udc_remove() and then releases
* all PCI resources allocated for this USB device controller
*/
static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev)
{
struct platform_device *plat_ci = pci_get_drvdata(pdev);
platform_device_unregister(plat_ci);
pci_set_drvdata(pdev, NULL);
pci_disable_device(pdev);
}
/**
* PCI device table
* PCI device structure
*
* Check "pci.h" for details
*/
static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = {
{
PCI_DEVICE(0x153F, 0x1004),
.driver_data = (kernel_ulong_t)&pci_driver,
},
{
PCI_DEVICE(0x153F, 0x1006),
.driver_data = (kernel_ulong_t)&pci_driver,
},
{
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
.driver_data = (kernel_ulong_t)&langwell_pci_driver,
},
{
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
.driver_data = (kernel_ulong_t)&langwell_pci_driver,
},
{ 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, ci13xxx_pci_id_table);
static struct pci_driver ci13xxx_pci_driver = {
.name = UDC_DRIVER_NAME,
.id_table = ci13xxx_pci_id_table,
.probe = ci13xxx_pci_probe,
.remove = __devexit_p(ci13xxx_pci_remove),
};
module_pci_driver(ci13xxx_pci_driver);
MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>");
MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller");
MODULE_LICENSE("GPL");
MODULE_VERSION("June 2008");
|
