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/* Copyright 2019 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* USB Type-C module */
#ifndef __CROS_EC_USB_TC_H
#define __CROS_EC_USB_TC_H
#include "usb_sm.h"
#include "usb_pd_tcpm.h"
#define TC_SET_FLAG(port, flag) atomic_or(&tc[port].flags, (flag))
#define TC_CLR_FLAG(port, flag) atomic_clear(&tc[port].flags, (flag))
#define TC_CHK_FLAG(port, flag) (tc[port].flags & (flag))
/*
* Type C supply voltage (mV)
*
* This is the maximum voltage a sink can request
* while charging.
*/
#define TYPE_C_VOLTAGE 5000 /* mV */
/*
* Type C default sink current (mA)
*
* This is the maximum current a sink can draw if charging
* while in the Audio Accessory State.
*/
#define TYPE_C_AUDIO_ACC_CURRENT 500 /* mA */
/**
* Get current data role
*
* @param port USB-C port number
* @return 0 for ufp, 1 for dfp, 2 for disconnected
*/
int tc_get_data_role(int port);
/**
* Get current power role
*
* @param port USB-C port number
* @return 0 for sink, 1 for source or vpd
*/
int tc_get_power_role(int port);
/**
* Get current polarity
*
* @param port USB-C port number
* @return 0 for CC1 as primary, 1 for CC2 as primary
*/
uint8_t tc_get_polarity(int port);
/**
* Get Power Deliever communication state. If disabled, both protocol and policy
* engine are disabled and should not run.
*
* @param port USB-C port number
* @return 0 if pd is disabled, 1 is pd is enabled
*/
uint8_t tc_get_pd_enabled(int port);
/**
* Set the power role
*
* @param port USB-C port number
* @param role power role
*/
void tc_set_power_role(int port, int role);
/**
* Sets the USB Mux depending on current data role
* Mux is connected except when:
* 1) PD is disconnected
* 2) Current data role is UFP and we only support DFP
*
* @param port USB-C port number
*/
void set_usb_mux_with_current_data_role(int port);
/**
* Get loop timeout value
*
* @param port USB-C port number
* @return time in ms
*/
uint64_t tc_get_timeout(int port);
/**
* Set loop timeout value
*
* @param port USB-C port number
* @timeout time in ms
*/
void tc_set_timeout(int port, uint64_t timeout);
/**
* Restarts the TCPC
*
* @param port USB-C port number
* @returns EC_SUCCESS on success
*/
int tc_restart_tcpc(int port);
/**
* Sets the polarity of the port
*
* @param port USB-C port number
* @param polarity 0 for CC1, else 1 for CC2
*/
void set_polarity(int port, int polarity);
/**
* Called by the state machine framework to initialize the
* TypeC state machine
*
* @param port USB-C port number
*/
void tc_state_init(int port);
/**
* Called by the state machine framework to handle events
* that affect the state machine as a whole
*
* @param port USB-C port number
* @param evt event
*/
void tc_event_check(int port, int evt);
/**
* Runs the TypeC layer statemachine
*
* @param port USB-C port number
*/
void tc_run(const int port);
#ifdef CONFIG_USB_TYPEC_CTVPD
/**
* Resets the charge-through support timer. This can be
* called many times but the support timer will only
* reset once, while in the Attached.SNK state.
*
* @param port USB-C port number
*/
void tc_reset_support_timer(int port);
#endif /* CONFIG_USB_TYPEC_CTVPD */
#endif /* __CROS_EC_USB_TC_H */
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