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
|
/*
* ci_hdrc_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 <linux/usb/chipidea.h>
/* driver name */
#define UDC_DRIVER_NAME "ci_hdrc_pci"
/******************************************************************************
* PCI block
*****************************************************************************/
static struct ci_hdrc_platform_data pci_platdata = {
.name = UDC_DRIVER_NAME,
.capoffset = DEF_CAPOFFSET,
};
static struct ci_hdrc_platform_data langwell_pci_platdata = {
.name = UDC_DRIVER_NAME,
.capoffset = 0,
};
static struct ci_hdrc_platform_data penwell_pci_platdata = {
.name = UDC_DRIVER_NAME,
.capoffset = 0,
.power_budget = 200,
};
/**
* ci_hdrc_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 ci_hdrc_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
struct ci_hdrc_platform_data *platdata = (void *)id->driver_data;
struct platform_device *plat_ci;
struct resource res[3];
int retval = 0, nres = 2;
if (!platdata) {
dev_err(&pdev->dev, "device doesn't provide driver data\n");
return -ENODEV;
}
retval = pcim_enable_device(pdev);
if (retval)
return retval;
if (!pdev->irq) {
dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!");
return -ENODEV;
}
pci_set_master(pdev);
pci_try_set_mwi(pdev);
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;
plat_ci = ci_hdrc_add_device(&pdev->dev, res, nres, platdata);
if (IS_ERR(plat_ci)) {
dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
return PTR_ERR(plat_ci);
}
pci_set_drvdata(pdev, plat_ci);
return 0;
}
/**
* ci_hdrc_pci_remove: PCI remove
* @pdev: USB Device Controller being removed
*
* Reverses the effect of ci_hdrc_pci_probe(),
* first invoking the udc_remove() and then releases
* all PCI resources allocated for this USB device controller
*/
static void ci_hdrc_pci_remove(struct pci_dev *pdev)
{
struct platform_device *plat_ci = pci_get_drvdata(pdev);
ci_hdrc_remove_device(plat_ci);
}
/**
* PCI device table
* PCI device structure
*
* Check "pci.h" for details
*/
static DEFINE_PCI_DEVICE_TABLE(ci_hdrc_pci_id_table) = {
{
PCI_DEVICE(0x153F, 0x1004),
.driver_data = (kernel_ulong_t)&pci_platdata,
},
{
PCI_DEVICE(0x153F, 0x1006),
.driver_data = (kernel_ulong_t)&pci_platdata,
},
{
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
.driver_data = (kernel_ulong_t)&langwell_pci_platdata,
},
{
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
},
{ 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table);
static struct pci_driver ci_hdrc_pci_driver = {
.name = UDC_DRIVER_NAME,
.id_table = ci_hdrc_pci_id_table,
.probe = ci_hdrc_pci_probe,
.remove = ci_hdrc_pci_remove,
};
module_pci_driver(ci_hdrc_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");
MODULE_ALIAS("platform:ci13xxx_pci");
|
