1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Provides code common for host and device side USB.
4 *
5 * (C) Copyright 2016
6 * Texas Instruments Incorporated, <www.ti.com>
7 */
8
9 #include <common.h>
10 #include <dm.h>
11 #include <linux/usb/otg.h>
12 #include <linux/usb/ch9.h>
13 #include <linux/usb/phy.h>
14
15 DECLARE_GLOBAL_DATA_PTR;
16
17 static const char *const usb_dr_modes[] = {
18 [USB_DR_MODE_UNKNOWN] = "",
19 [USB_DR_MODE_HOST] = "host",
20 [USB_DR_MODE_PERIPHERAL] = "peripheral",
21 [USB_DR_MODE_OTG] = "otg",
22 };
23
usb_get_dr_mode(ofnode node)24 enum usb_dr_mode usb_get_dr_mode(ofnode node)
25 {
26 const char *dr_mode;
27 int i;
28
29 dr_mode = ofnode_read_string(node, "dr_mode");
30 if (!dr_mode) {
31 pr_err("usb dr_mode not found\n");
32 return USB_DR_MODE_UNKNOWN;
33 }
34
35 for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++)
36 if (!strcmp(dr_mode, usb_dr_modes[i]))
37 return i;
38
39 return USB_DR_MODE_UNKNOWN;
40 }
41
42 static const char *const speed_names[] = {
43 [USB_SPEED_UNKNOWN] = "UNKNOWN",
44 [USB_SPEED_LOW] = "low-speed",
45 [USB_SPEED_FULL] = "full-speed",
46 [USB_SPEED_HIGH] = "high-speed",
47 [USB_SPEED_WIRELESS] = "wireless",
48 [USB_SPEED_SUPER] = "super-speed",
49 };
50
usb_get_maximum_speed(ofnode node)51 enum usb_device_speed usb_get_maximum_speed(ofnode node)
52 {
53 const char *max_speed;
54 int i;
55
56 max_speed = ofnode_read_string(node, "maximum-speed");
57 if (!max_speed) {
58 pr_err("usb maximum-speed not found\n");
59 return USB_SPEED_UNKNOWN;
60 }
61
62 for (i = 0; i < ARRAY_SIZE(speed_names); i++)
63 if (!strcmp(max_speed, speed_names[i]))
64 return i;
65
66 return USB_SPEED_UNKNOWN;
67 }
68
69 #if CONFIG_IS_ENABLED(DM_USB)
70 static const char *const usbphy_modes[] = {
71 [USBPHY_INTERFACE_MODE_UNKNOWN] = "",
72 [USBPHY_INTERFACE_MODE_UTMI] = "utmi",
73 [USBPHY_INTERFACE_MODE_UTMIW] = "utmi_wide",
74 };
75
usb_get_phy_mode(ofnode node)76 enum usb_phy_interface usb_get_phy_mode(ofnode node)
77 {
78 const char *phy_type;
79 int i;
80
81 phy_type = ofnode_get_property(node, "phy_type", NULL);
82 if (!phy_type)
83 return USBPHY_INTERFACE_MODE_UNKNOWN;
84
85 for (i = 0; i < ARRAY_SIZE(usbphy_modes); i++)
86 if (!strcmp(phy_type, usbphy_modes[i]))
87 return i;
88
89 return USBPHY_INTERFACE_MODE_UNKNOWN;
90 }
91 #endif
92