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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.
*/
/* Shared USB-C policy for Zork boards */
#include "charge_manager.h"
#include "chipset.h"
#include "common.h"
#include "compile_time_macros.h"
#include "console.h"
#include "ec_commands.h"
#include "gpio.h"
#include "system.h"
#include "usb_mux.h"
#include "usb_pd.h"
#include "usbc_ppc.h"
#include "util.h"
int pd_check_vconn_swap(int port)
{
/*
* Do not allow vconn swap 5V rail is off
* S5_PGOOD depends on PG_PP5000_S5 being asserted,
* so GPIO_S5_PGOOD is a reasonable proxy for PP5000_S5
*/
return gpio_get_level(GPIO_S5_PGOOD);
}
void pd_power_supply_reset(int port)
{
/*
* Don't need to shutoff VBus if we are not sourcing it
* TODO: Ensure Vbus sourcing is being disabled appropriately to
* avoid invalid TC states
*/
if (ppc_is_sourcing_vbus(port)) {
/* Disable VBUS. */
ppc_vbus_source_enable(port, 0);
/* Enable discharge if we were previously sourcing 5V */
if (IS_ENABLED(CONFIG_USB_PD_DISCHARGE))
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;
if (IS_ENABLED(CONFIG_USB_PD_DISCHARGE))
pd_set_vbus_discharge(port, 0);
/* Provide Vbus. */
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;
}
int board_vbus_source_enabled(int port)
{
return ppc_is_sourcing_vbus(port);
}
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