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/* Copyright 2021 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "adc.h"
#include "charge_manager.h"
#include "usb_charge.h"
#include "usb_pd.h"
#include "usbc_ppc.h"
int pd_snk_is_vbus_provided(int port)
{
static atomic_t vbus_prev[CONFIG_USB_PD_PORT_MAX_COUNT];
int vbus;
/*
* (b:181203590#comment20) TODO(yllin): use
* PD_VSINK_DISCONNECT_PD for non-5V case.
*/
vbus = adc_read_channel(board_get_vbus_adc(port)) >=
PD_V_SINK_DISCONNECT_MAX;
#ifdef CONFIG_USB_CHARGER
/*
* There's no PPC to inform VBUS change for usb_charger, so inform
* the usb_charger now.
*/
if (!!(vbus_prev[port] != vbus)) {
usb_charger_vbus_change(port, vbus);
}
if (vbus) {
atomic_or(&vbus_prev[port], 1);
} else {
atomic_clear(&vbus_prev[port]);
}
#endif
return vbus;
}
int board_vbus_source_enabled(int port)
{
return ppc_is_sourcing_vbus(port);
}
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