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/* Copyright 2021 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.
*/
#include "charge_manager.h"
#include "compile_time_macros.h"
#include "usb_pd.h"
#include "usb_pd_config.h"
#include "usb_pd_pdo.h"
#define CHG_PDO_FIXED_FLAGS (PDO_FIXED_DATA_SWAP)
const uint32_t pd_snk_pdo[] = {
PDO_FIXED(5000, 500, CHG_PDO_FIXED_FLAGS),
PDO_BATT(4750, 21000, 15000),
PDO_VAR(4750, 21000, 3000),
};
const int pd_snk_pdo_cnt = ARRAY_SIZE(pd_snk_pdo);
/*
* Dynamic PDO that reflects capabilities present on the CHG port. Allow for
* multiple entries so that we can offer greater than 5V charging. The 1st
* entry will be fixed 5V, but its current value may change based on the CHG
* port vbus info. Subsequent entries are used for when offering vbus greater
* than 5V.
*/
const uint16_t pd_src_voltages_mv[] = {
5000, 9000, 10000, 12000, 15000, 20000,
};
uint32_t pd_src_chg_pdo[ARRAY_SIZE(pd_src_voltages_mv)];
uint8_t chg_pdo_cnt;
int active_charge_port = CHARGE_PORT_NONE;
struct vbus_prop vbus[CONFIG_USB_PD_PORT_MAX_COUNT];
int charge_port_is_active(void)
{
return active_charge_port == CHG && vbus[CHG].mv > 0;
}
int charge_manager_get_source_pdo(const uint32_t **src_pdo, const int port)
{
int pdo_cnt = 0;
/*
* If CHG is providing VBUS, then advertise what's available on the CHG
* port, otherwise we provide no power.
*/
if (charge_port_is_active()) {
*src_pdo = pd_src_chg_pdo;
pdo_cnt = chg_pdo_cnt;
}
return pdo_cnt;
}
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