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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 "adc.h"
#include "charge_manager.h"
#include "chipset.h"
#include "usb_charge.h"
#include "usb_pd.h"
#include "usbc_ppc.h"
int pd_check_vconn_swap(int port)
{
/* Allow Vconn swap if AP is on. */
return chipset_in_state(CHIPSET_STATE_SUSPEND | CHIPSET_STATE_ON);
}
int pd_snk_is_vbus_provided(int port)
{
__maybe_unused 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;
}
void pd_power_supply_reset(int port)
{
int prev_en;
prev_en = ppc_is_sourcing_vbus(port);
/* Disable VBUS. */
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);
/* 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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