mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-27 01:48:17 +00:00
118 lines
3.7 KiB
C
118 lines
3.7 KiB
C
/*
|
|
* This file is part of the Trezor project, https://trezor.io/
|
|
*
|
|
* Copyright (c) SatoshiLabs
|
|
*
|
|
* 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, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef __TREZORHAL_USB_H__
|
|
#define __TREZORHAL_USB_H__
|
|
|
|
#include <stdint.h>
|
|
#include "secbool.h"
|
|
|
|
#include "usb_hid.h"
|
|
#include "usb_vcp.h"
|
|
#include "usb_webusb.h"
|
|
|
|
// clang-format off
|
|
//
|
|
// USB stack high-level state machine
|
|
// ------------------------------------
|
|
//
|
|
// +---------------+
|
|
// ----> | Uninitialized | - Stack is completely uninitialized
|
|
// | +---------------+
|
|
// | |
|
|
// | usb_init()
|
|
// usb_deinit() |
|
|
// | v
|
|
// | +---------------+ - Stack is partially initialized
|
|
// |-----| Initialized | - Ready for class registration
|
|
// | +---------------+
|
|
// | |
|
|
// | N x usb_xxx_add() - Multiple class drivers can be registered
|
|
// | |
|
|
// | v
|
|
// | +---------------+ - Stack is completely initialized
|
|
// |-----| Stopped | - USB hardware left uninitialized
|
|
// | +---------------+ - Can go low power at this mode
|
|
// | | ^
|
|
// | usb_start() |
|
|
// | | usb_stop()
|
|
// | v |
|
|
// | +---------------+ - USB hardware initialized
|
|
// ------| Running | - Stack is running if the USB host is connected
|
|
// +---------------+
|
|
//
|
|
// clang-format on
|
|
|
|
typedef struct {
|
|
uint8_t device_class;
|
|
uint8_t device_subclass;
|
|
uint8_t device_protocol;
|
|
uint16_t vendor_id;
|
|
uint16_t product_id;
|
|
uint16_t release_num;
|
|
const char *manufacturer;
|
|
const char *product;
|
|
const char *serial_number;
|
|
const char *interface;
|
|
secbool usb21_enabled;
|
|
secbool usb21_landing;
|
|
} usb_dev_info_t;
|
|
|
|
// Initializes USB stack
|
|
//
|
|
// When the USB driver is initialized, class drivers can be registered.
|
|
// After all class drivers are registered, `usb_start()` can be called.
|
|
//
|
|
// Returns `sectrue` if the initialization is successful.
|
|
secbool usb_init(const usb_dev_info_t *dev_info);
|
|
|
|
// Deinitialize USB stack
|
|
//
|
|
// This function completely deinitializes the USB driver and all class drivers.
|
|
// After this function is called, `usb_init()` can be called again.
|
|
void usb_deinit(void);
|
|
|
|
// Starts USB driver and its class drivers
|
|
//
|
|
// Initializes the USB stack (and hardware) and starts all registered class
|
|
// drivers.
|
|
//
|
|
// This function can called after all class drivers are registered or after
|
|
// `usb_stop()` is called.
|
|
//
|
|
// Returns `sectrue` if the USB stack is started successfully.
|
|
secbool usb_start(void);
|
|
|
|
// Stops USB driver and its class drivers
|
|
//
|
|
// Unitializes the USB stack (and hardware) but leaves all configuration intact,
|
|
// so it can be started again with `usb_start()`.
|
|
//
|
|
// When the USB stack is stopped, it does not respond to any USB events and
|
|
// the CPU can go to stop/standby mode.
|
|
void usb_stop(void);
|
|
|
|
// Returns `sectrue` if the device is connected to the host (or is expected to
|
|
// be)
|
|
//
|
|
// TODO: Review and clarify the logic of this function in the future
|
|
secbool usb_configured(void);
|
|
|
|
#endif
|