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/* Copyright 2022 The ChromiumOS Authors
* 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 "charger.h"
#include "chipset.h"
#include "common.h"
#include "console.h"
#include "gpio.h"
#include "usb_pd.h"
#include "usbc_ppc.h"
#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ##args)
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ##args)
__override int pd_check_power_swap(int port)
{
/* If type-c port is supplying power, we never swap PR (to source) */
if (port == charge_manager_get_active_charge_port())
return 0;
/*
* Allow power swap as long as we are acting as a dual role device,
* otherwise assume our role is fixed (not in S0 or console command
* to fix our role).
*/
return (pd_get_dual_role(port) == PD_DRP_TOGGLE_ON ? 1 : 0);
}
int pd_check_vconn_swap(int port)
{
/* Allow VCONN swaps if the AP is on */
return gpio_get_level(GPIO_EN_PP5000_U);
}
void pd_power_supply_reset(int port)
{
int prev_en;
if (port < 0 || port >= board_get_usb_pd_port_count())
return;
prev_en = ppc_is_sourcing_vbus(port);
/* Disable VBUS source */
ppc_vbus_source_enable(port, 0);
/* Enable discharge if we were previously sourcing 5V */
if (prev_en)
pd_set_vbus_discharge(port, 1);
/* Notify host of power info change. */
pd_send_host_event(PD_EVENT_POWER_CHANGE);
}
int pd_set_power_supply_ready(int port)
{
int rv;
/* Disable charging */
rv = ppc_vbus_sink_enable(port, 0);
if (rv)
return rv;
pd_set_vbus_discharge(port, 0);
/* Enable VBUS source */
rv = ppc_vbus_source_enable(port, 1);
if (rv)
return rv;
/* Notify host of power info change. */
pd_send_host_event(PD_EVENT_POWER_CHANGE);
return EC_SUCCESS;
}
__override int pd_snk_is_vbus_provided(int port)
{
if (port != CHARGE_PORT_TYPEC0)
return 0;
return ppc_is_vbus_present(port);
}
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