1 /* 2 * Provides code common for host and device side USB. 3 * 4 * (C) Copyright 2016 5 * Texas Instruments Incorporated, <www.ti.com> 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 10 #include <common.h> 11 #include <linux/libfdt.h> 12 #include <linux/usb/otg.h> 13 #include <linux/usb/ch9.h> 14 #include <linux/usb/phy.h> 15 16 DECLARE_GLOBAL_DATA_PTR; 17 18 static const char *const usb_dr_modes[] = { 19 [USB_DR_MODE_UNKNOWN] = "", 20 [USB_DR_MODE_HOST] = "host", 21 [USB_DR_MODE_PERIPHERAL] = "peripheral", 22 [USB_DR_MODE_OTG] = "otg", 23 }; 24 25 enum usb_dr_mode usb_get_dr_mode(int node) 26 { 27 const void *fdt = gd->fdt_blob; 28 const char *dr_mode; 29 int i; 30 31 dr_mode = fdt_getprop(fdt, node, "dr_mode", NULL); 32 if (!dr_mode) { 33 pr_err("usb dr_mode not found\n"); 34 return USB_DR_MODE_UNKNOWN; 35 } 36 37 for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++) 38 if (!strcmp(dr_mode, usb_dr_modes[i])) 39 return i; 40 41 return USB_DR_MODE_UNKNOWN; 42 } 43 44 static const char *const speed_names[] = { 45 [USB_SPEED_UNKNOWN] = "UNKNOWN", 46 [USB_SPEED_LOW] = "low-speed", 47 [USB_SPEED_FULL] = "full-speed", 48 [USB_SPEED_HIGH] = "high-speed", 49 [USB_SPEED_WIRELESS] = "wireless", 50 [USB_SPEED_SUPER] = "super-speed", 51 }; 52 53 enum usb_device_speed usb_get_maximum_speed(int node) 54 { 55 const void *fdt = gd->fdt_blob; 56 const char *max_speed; 57 int i; 58 59 max_speed = fdt_getprop(fdt, node, "maximum-speed", NULL); 60 if (!max_speed) { 61 pr_err("usb maximum-speed not found\n"); 62 return USB_SPEED_UNKNOWN; 63 } 64 65 for (i = 0; i < ARRAY_SIZE(speed_names); i++) 66 if (!strcmp(max_speed, speed_names[i])) 67 return i; 68 69 return USB_SPEED_UNKNOWN; 70 } 71 72 #if CONFIG_IS_ENABLED(OF_LIVE) && CONFIG_IS_ENABLED(DM_USB) 73 static const char *const usbphy_modes[] = { 74 [USBPHY_INTERFACE_MODE_UNKNOWN] = "", 75 [USBPHY_INTERFACE_MODE_UTMI] = "utmi", 76 [USBPHY_INTERFACE_MODE_UTMIW] = "utmi_wide", 77 }; 78 79 enum usb_phy_interface usb_get_phy_mode(ofnode node) 80 { 81 const char *phy_type; 82 int i; 83 84 phy_type = ofnode_get_property(node, "phy_type", NULL); 85 if (!phy_type) 86 return USBPHY_INTERFACE_MODE_UNKNOWN; 87 88 for (i = 0; i < ARRAY_SIZE(usbphy_modes); i++) 89 if (!strcmp(phy_type, usbphy_modes[i])) 90 return i; 91 92 return USBPHY_INTERFACE_MODE_UNKNOWN; 93 } 94 #endif 95