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
|
/*
* Provides code common for host and device side USB.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, version 2.
*
* If either host side (ie. CONFIG_USB=y) or device side USB stack
* (ie. CONFIG_USB_GADGET=y) is compiled in the kernel, this module is
* compiled-in as well. Otherwise, if either of the two stacks is
* compiled as module, this file is compiled as module as well.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/usb/ch9.h>
#include <linux/usb/of.h>
#include <linux/usb/otg.h>
const char *usb_otg_state_string(enum usb_otg_state state)
{
static const char *const names[] = {
[OTG_STATE_A_IDLE] = "a_idle",
[OTG_STATE_A_WAIT_VRISE] = "a_wait_vrise",
[OTG_STATE_A_WAIT_BCON] = "a_wait_bcon",
[OTG_STATE_A_HOST] = "a_host",
[OTG_STATE_A_SUSPEND] = "a_suspend",
[OTG_STATE_A_PERIPHERAL] = "a_peripheral",
[OTG_STATE_A_WAIT_VFALL] = "a_wait_vfall",
[OTG_STATE_A_VBUS_ERR] = "a_vbus_err",
[OTG_STATE_B_IDLE] = "b_idle",
[OTG_STATE_B_SRP_INIT] = "b_srp_init",
[OTG_STATE_B_PERIPHERAL] = "b_peripheral",
[OTG_STATE_B_WAIT_ACON] = "b_wait_acon",
[OTG_STATE_B_HOST] = "b_host",
};
if (state < 0 || state >= ARRAY_SIZE(names))
return "UNDEFINED";
return names[state];
}
EXPORT_SYMBOL_GPL(usb_otg_state_string);
const char *usb_speed_string(enum usb_device_speed speed)
{
static const char *const names[] = {
[USB_SPEED_UNKNOWN] = "UNKNOWN",
[USB_SPEED_LOW] = "low-speed",
[USB_SPEED_FULL] = "full-speed",
[USB_SPEED_HIGH] = "high-speed",
[USB_SPEED_WIRELESS] = "wireless",
[USB_SPEED_SUPER] = "super-speed",
};
if (speed < 0 || speed >= ARRAY_SIZE(names))
speed = USB_SPEED_UNKNOWN;
return names[speed];
}
EXPORT_SYMBOL_GPL(usb_speed_string);
const char *usb_state_string(enum usb_device_state state)
{
static const char *const names[] = {
[USB_STATE_NOTATTACHED] = "not attached",
[USB_STATE_ATTACHED] = "attached",
[USB_STATE_POWERED] = "powered",
[USB_STATE_RECONNECTING] = "reconnecting",
[USB_STATE_UNAUTHENTICATED] = "unauthenticated",
[USB_STATE_DEFAULT] = "default",
[USB_STATE_ADDRESS] = "addresssed",
[USB_STATE_CONFIGURED] = "configured",
[USB_STATE_SUSPENDED] = "suspended",
};
if (state < 0 || state >= ARRAY_SIZE(names))
return "UNKNOWN";
return names[state];
}
EXPORT_SYMBOL_GPL(usb_state_string);
#ifdef CONFIG_OF
static const char *const usb_dr_modes[] = {
[USB_DR_MODE_UNKNOWN] = "",
[USB_DR_MODE_HOST] = "host",
[USB_DR_MODE_PERIPHERAL] = "peripheral",
[USB_DR_MODE_OTG] = "otg",
};
/**
* of_usb_get_dr_mode - Get dual role mode for given device_node
* @np: Pointer to the given device_node
*
* The function gets phy interface string from property 'dr_mode',
* and returns the correspondig enum usb_dr_mode
*/
enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np)
{
const char *dr_mode;
int err, i;
err = of_property_read_string(np, "dr_mode", &dr_mode);
if (err < 0)
return USB_DR_MODE_UNKNOWN;
for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++)
if (!strcmp(dr_mode, usb_dr_modes[i]))
return i;
return USB_DR_MODE_UNKNOWN;
}
EXPORT_SYMBOL_GPL(of_usb_get_dr_mode);
#endif
MODULE_LICENSE("GPL");
|
