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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Provides code common for host and device side USB.
- *
- * (C) Copyright 2016
- * Texas Instruments Incorporated, <www.ti.com>
- */
- #include <common.h>
- #include <dm.h>
- #include <asm/global_data.h>
- #include <linux/usb/otg.h>
- #include <linux/usb/ch9.h>
- #include <linux/usb/phy.h>
- DECLARE_GLOBAL_DATA_PTR;
- 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",
- };
- enum usb_dr_mode usb_get_dr_mode(ofnode node)
- {
- const char *dr_mode;
- int i;
- dr_mode = ofnode_read_string(node, "dr_mode");
- if (!dr_mode) {
- pr_err("usb dr_mode not found\n");
- 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;
- }
- static const char *const speed_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",
- [USB_SPEED_SUPER_PLUS] = "super-speed-plus",
- };
- const char *usb_speed_string(enum usb_device_speed speed)
- {
- if (speed < 0 || speed >= ARRAY_SIZE(speed_names))
- speed = USB_SPEED_UNKNOWN;
- return speed_names[speed];
- }
- enum usb_device_speed usb_get_maximum_speed(ofnode node)
- {
- const char *max_speed;
- int i;
- max_speed = ofnode_read_string(node, "maximum-speed");
- if (!max_speed) {
- pr_err("usb maximum-speed not found\n");
- return USB_SPEED_UNKNOWN;
- }
- for (i = 0; i < ARRAY_SIZE(speed_names); i++)
- if (!strcmp(max_speed, speed_names[i]))
- return i;
- return USB_SPEED_UNKNOWN;
- }
- #if CONFIG_IS_ENABLED(DM_USB)
- static const char *const usbphy_modes[] = {
- [USBPHY_INTERFACE_MODE_UNKNOWN] = "",
- [USBPHY_INTERFACE_MODE_UTMI] = "utmi",
- [USBPHY_INTERFACE_MODE_UTMIW] = "utmi_wide",
- [USBPHY_INTERFACE_MODE_ULPI] = "ulpi",
- [USBPHY_INTERFACE_MODE_SERIAL] = "serial",
- [USBPHY_INTERFACE_MODE_HSIC] = "hsic",
- };
- enum usb_phy_interface usb_get_phy_mode(ofnode node)
- {
- const char *phy_type;
- int i;
- phy_type = ofnode_get_property(node, "phy_type", NULL);
- if (!phy_type)
- return USBPHY_INTERFACE_MODE_UNKNOWN;
- for (i = 0; i < ARRAY_SIZE(usbphy_modes); i++)
- if (!strcmp(phy_type, usbphy_modes[i]))
- return i;
- return USBPHY_INTERFACE_MODE_UNKNOWN;
- }
- #endif
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