e90f1b66d8
This USB-C Subsystem enables an application to include USB-C Power Delivery Sink functionality. Signed-off-by: Sam Hurst <sbh1187@gmail.com>
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/*
|
|
* Copyright (c) 2022 The Chromium OS Authors
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#ifndef ZEPHYR_SUBSYS_USBC_H_
|
|
#define ZEPHYR_SUBSYS_USBC_H_
|
|
|
|
#include <zephyr/kernel.h>
|
|
#include <zephyr/usb_c/usbc.h>
|
|
#include <zephyr/smf.h>
|
|
#include "usbc_timer.h"
|
|
|
|
/**
|
|
* @brief TC Layer State Machine Object
|
|
*/
|
|
struct tc_sm_t {
|
|
/** TC layer state machine context */
|
|
struct smf_ctx ctx;
|
|
/** Port device */
|
|
const struct device *dev;
|
|
/** TC layer flags */
|
|
atomic_t flags;
|
|
/** VBUS measurement device */
|
|
const struct device *vbus_dev;
|
|
/** Port polarity */
|
|
enum tc_cc_polarity cc_polarity;
|
|
/** The cc state */
|
|
enum tc_cc_states cc_state;
|
|
/** Voltage on CC pin */
|
|
enum tc_cc_voltage_state cc_voltage;
|
|
/** Current CC1 value */
|
|
enum tc_cc_voltage_state cc1;
|
|
/** Current CC2 value */
|
|
enum tc_cc_voltage_state cc2;
|
|
|
|
/* Timers */
|
|
|
|
/** tCCDebounce timer */
|
|
struct usbc_timer_t tc_t_cc_debounce;
|
|
/** tRpValueChange timer */
|
|
struct usbc_timer_t tc_t_rp_value_change;
|
|
/** tErrorRecovery timer */
|
|
struct usbc_timer_t tc_t_error_recovery;
|
|
};
|
|
|
|
/**
|
|
* @brief This function must only be called in the subsystem init function.
|
|
*
|
|
* @param dev Pointer to the device structure for the driver instance.
|
|
*/
|
|
void tc_subsys_init(const struct device *dev);
|
|
|
|
/**
|
|
* @brief Run the TC Layer state machine. This is called from the subsystems
|
|
* port stack thread.
|
|
*
|
|
* @param dev Pointer to the device structure for the driver instance.
|
|
* @param dpm_request Device Policy Manager request
|
|
*/
|
|
void tc_run(const struct device *dev, int32_t dpm_request);
|
|
|
|
/**
|
|
* @brief Checks if the TC Layer is in an Attached state
|
|
*
|
|
* @param dev Pointer to the device structure for the driver instance.
|
|
*
|
|
* @retval true if TC Layer is in an Attached state, else false
|
|
*/
|
|
bool tc_is_in_attached_state(const struct device *dev);
|
|
|
|
#endif /* ZEPHYR_SUBSYS_USBC_TC_H_ */
|