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
|
/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/usb/msm_hsusb_hw.h>
#include <linux/usb/ulpi.h>
#include "ci13xxx_udc.c"
#define MSM_USB_BASE (udc->regs)
static irqreturn_t msm_udc_irq(int irq, void *data)
{
return udc_irq();
}
static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
{
struct device *dev = udc->gadget.dev.parent;
int val;
switch (event) {
case CI13XXX_CONTROLLER_RESET_EVENT:
dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n");
writel(0, USB_AHBBURST);
writel(0, USB_AHBMODE);
break;
case CI13XXX_CONTROLLER_STOPPED_EVENT:
dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n");
/*
* Put the transceiver in non-driving mode. Otherwise host
* may not detect soft-disconnection.
*/
val = otg_io_read(udc->transceiver, ULPI_FUNC_CTRL);
val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
otg_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
break;
default:
dev_dbg(dev, "unknown ci13xxx_udc event\n");
break;
}
}
static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
.name = "ci13xxx_msm",
.flags = CI13XXX_REGS_SHARED |
CI13XXX_REQUIRE_TRANSCEIVER |
CI13XXX_PULLUP_ON_VBUS |
CI13XXX_DISABLE_STREAMING,
.notify_event = ci13xxx_msm_notify_event,
};
static int ci13xxx_msm_probe(struct platform_device *pdev)
{
struct resource *res;
void __iomem *regs;
int irq;
int ret;
dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "failed to get platform resource mem\n");
return -ENXIO;
}
regs = ioremap(res->start, resource_size(res));
if (!regs) {
dev_err(&pdev->dev, "ioremap failed\n");
return -ENOMEM;
}
ret = udc_probe(&ci13xxx_msm_udc_driver, &pdev->dev, regs);
if (ret < 0) {
dev_err(&pdev->dev, "udc_probe failed\n");
goto iounmap;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "IRQ not found\n");
ret = -ENXIO;
goto udc_remove;
}
ret = request_irq(irq, msm_udc_irq, IRQF_SHARED, pdev->name, pdev);
if (ret < 0) {
dev_err(&pdev->dev, "request_irq failed\n");
goto udc_remove;
}
pm_runtime_no_callbacks(&pdev->dev);
pm_runtime_enable(&pdev->dev);
return 0;
udc_remove:
udc_remove();
iounmap:
iounmap(regs);
return ret;
}
static struct platform_driver ci13xxx_msm_driver = {
.probe = ci13xxx_msm_probe,
.driver = { .name = "msm_hsusb", },
};
MODULE_ALIAS("platform:msm_hsusb");
static int __init ci13xxx_msm_init(void)
{
return platform_driver_register(&ci13xxx_msm_driver);
}
module_init(ci13xxx_msm_init);
|
