5113f6f70
 김현기
kernel add
|
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
|
/**
* host.c - DesignWare USB3 DRD Controller Host Glue
*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 of
* the License 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.
*/
#include <linux/platform_device.h>
#include <linux/usb/xhci_pdriver.h>
#include <linux/of_device.h>
#include "core.h"
int dwc3_host_init(struct dwc3 *dwc)
{
struct platform_device *xhci;
struct usb_xhci_pdata pdata;
int ret;
xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
if (!xhci) {
dev_err(dwc->dev, "couldn't allocate xHCI device
");
return -ENOMEM;
}
xhci->dev.parent = dwc->dev;
dwc->xhci = xhci;
ret = platform_device_add_resources(xhci, dwc->xhci_resources,
DWC3_XHCI_RESOURCES_NUM);
if (ret) {
dev_err(dwc->dev, "couldn't add resources to xHCI device
");
goto err1;
}
memset(&pdata, 0, sizeof(pdata));
pdata.usb3_lpm_capable = dwc->usb3_lpm_capable;
/**
* WORKAROUND: dwc3 revisions <=3.00a have a limitation
* where Port Disable command doesn't work.
*
* The suggested workaround is that we avoid Port Disable
* completely.
*
* This following flag tells XHCI to do just that.
*/
if (dwc->revision <= DWC3_REVISION_300A)
pdata.quirk_port_broken_pe = true;
ret = platform_device_add_data(xhci, &pdata, sizeof(pdata));
if (ret) {
dev_err(dwc->dev, "couldn't add platform data to xHCI device
");
goto err1;
}
phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy",
dev_name(&xhci->dev));
phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy",
dev_name(&xhci->dev));
if (IS_ENABLED(CONFIG_OF) && dwc->dev->of_node) {
of_dma_configure(&xhci->dev, dwc->dev->of_node);
} else {
dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
xhci->dev.dma_mask = dwc->dev->dma_mask;
xhci->dev.dma_parms = dwc->dev->dma_parms;
}
ret = platform_device_add(xhci);
if (ret) {
dev_err(dwc->dev, "failed to register xHCI device
");
goto err2;
}
return 0;
err2:
phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",
dev_name(&xhci->dev));
phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",
dev_name(&xhci->dev));
err1:
platform_device_put(xhci);
return ret;
}
void dwc3_host_exit(struct dwc3 *dwc)
{
phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",
dev_name(&dwc->xhci->dev));
phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",
dev_name(&dwc->xhci->dev));
platform_device_unregister(dwc->xhci);
}
|