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/* Copyright (c) 2014 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.
*/
#ifndef __CROS_EC_CHARGE_MANAGER_H
#define __CROS_EC_CHARGE_MANAGER_H
#include "common.h"
/* Charge port that indicates no active port */
#define CHARGE_SUPPLIER_NONE -1
#define CHARGE_PORT_NONE -1
#define CHARGE_CEIL_NONE -1
/* Initial charge state */
#define CHARGE_CURRENT_UNINITIALIZED -1
#define CHARGE_VOLTAGE_UNINITIALIZED -1
/*
* Time to delay for detecting the charger type (must be long enough for BC1.2
* driver to get supplier information and notify charge manager).
*/
#define CHARGE_DETECT_DELAY (2*SECOND)
/* Commonly-used charge suppliers listed in no particular order */
enum charge_supplier {
CHARGE_SUPPLIER_PD,
CHARGE_SUPPLIER_TYPEC,
CHARGE_SUPPLIER_BC12_DCP,
CHARGE_SUPPLIER_BC12_CDP,
CHARGE_SUPPLIER_BC12_SDP,
CHARGE_SUPPLIER_PROPRIETARY,
CHARGE_SUPPLIER_OTHER,
CHARGE_SUPPLIER_VBUS,
CHARGE_SUPPLIER_COUNT
};
/* Charge tasks report available current and voltage */
struct charge_port_info {
int current;
int voltage;
};
/* Called by charging tasks to update their available charge */
void charge_manager_update_charge(int supplier,
int port,
struct charge_port_info *charge);
/* Partner port dualrole capabilities */
enum dualrole_capabilities {
CAP_UNKNOWN,
CAP_DUALROLE,
CAP_DEDICATED,
};
/* Called by charging tasks to indicate partner dualrole capability change */
void charge_manager_update_dualrole(int port, enum dualrole_capabilities cap);
/*
* Charge ceiling can be set independently by different tasks / functions,
* for different purposes.
*/
enum ceil_requestor {
/* Set by PD task, during negotiation */
CEIL_REQUESTOR_PD,
/* Set by host commands */
CEIL_REQUESTOR_HOST,
/* Number of ceiling groups */
CEIL_REQUESTOR_COUNT,
};
/* Update charge ceiling for a given port / requestor */
void charge_manager_set_ceil(int port, enum ceil_requestor requestor, int ceil);
/* Select an 'override port', which is always the preferred charge port */
int charge_manager_set_override(int port);
int charge_manager_get_override(void);
/* Returns the current active charge port, as determined by charge manager */
int charge_manager_get_active_charge_port(void);
/* Return the power limit (uW) set by charge manager. */
int charge_manager_get_power_limit_uw(void);
/* Return the charger current (mA) value or CHARGE_CURRENT_UNINITIALIZED. */
int charge_manager_get_charger_current(void);
#ifdef CONFIG_USB_PD_LOGGING
/* Save power state log entry for the given port */
void charge_manager_save_log(int port);
#endif
/* Update whether a given port is sourcing current. */
void charge_manager_source_port(int port, int enable);
/*
* Get PD source power data objects.
*
* @param src_pdo pointer to the data to return.
* @return number of PDOs returned.
*/
int charge_manager_get_source_pdo(const uint32_t **src_pdo);
/* Board-level callback functions */
/*
* Set the active charge port. Returns EC_SUCCESS if the charge port is
* accepted, returns ec_error_list status otherwise.
*/
int board_set_active_charge_port(int charge_port);
/*
* Set the charge current limit.
*
* @param port PD port.
* @param supplier Identified CHARGE_SUPPLIER_*.
* @param charge_ma Desired charge current limit, <= max_ma.
* @param max_ma Maximum charge current limit, >= charge_ma.
*/
void board_set_charge_limit(int port, int supplier, int charge_ma, int max_ma);
/*
* Get whether the port is sourcing power on VBUS.
*
* @param port PD port.
* @return VBUS power state.
*/
int board_vbus_source_enabled(int port);
#endif /* __CROS_EC_CHARGE_MANAGER_H */
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