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 <dm.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(ofnode node) 26 { 27 const char *dr_mode; 28 int i; 29 30 dr_mode = ofnode_read_string(node, "dr_mode"); 31 if (!dr_mode) { 32 pr_err("usb dr_mode not found\n"); 33 return USB_DR_MODE_UNKNOWN; 34 } 35 36 for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++) 37 if (!strcmp(dr_mode, usb_dr_modes[i])) 38 return i; 39 40 return USB_DR_MODE_UNKNOWN; 41 } 42 43 static const char *const speed_names[] = { 44 [USB_SPEED_UNKNOWN] = "UNKNOWN", 45 [USB_SPEED_LOW] = "low-speed", 46 [USB_SPEED_FULL] = "full-speed", 47 [USB_SPEED_HIGH] = "high-speed", 48 [USB_SPEED_WIRELESS] = "wireless", 49 [USB_SPEED_SUPER] = "super-speed", 50 }; 51 52 enum usb_device_speed usb_get_maximum_speed(ofnode node) 53 { 54 const char *max_speed; 55 int i; 56 57 max_speed = ofnode_read_string(node, "maximum-speed"); 58 if (!max_speed) { 59 pr_err("usb maximum-speed not found\n"); 60 return USB_SPEED_UNKNOWN; 61 } 62 63 for (i = 0; i < ARRAY_SIZE(speed_names); i++) 64 if (!strcmp(max_speed, speed_names[i])) 65 return i; 66 67 return USB_SPEED_UNKNOWN; 68 } 69 70 #if CONFIG_IS_ENABLED(OF_LIVE) && CONFIG_IS_ENABLED(DM_USB) 71 static const char *const usbphy_modes[] = { 72 [USBPHY_INTERFACE_MODE_UNKNOWN] = "", 73 [USBPHY_INTERFACE_MODE_UTMI] = "utmi", 74 [USBPHY_INTERFACE_MODE_UTMIW] = "utmi_wide", 75 }; 76 77 enum usb_phy_interface usb_get_phy_mode(ofnode node) 78 { 79 const char *phy_type; 80 int i; 81 82 phy_type = ofnode_get_property(node, "phy_type", NULL); 83 if (!phy_type) 84 return USBPHY_INTERFACE_MODE_UNKNOWN; 85 86 for (i = 0; i < ARRAY_SIZE(usbphy_modes); i++) 87 if (!strcmp(phy_type, usbphy_modes[i])) 88 return i; 89 90 return USBPHY_INTERFACE_MODE_UNKNOWN; 91 } 92 #endif 93