/* Copyright 2017 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 "console.h"
#include "gpio.h"
#include "stddef.h"
#include "system.h"
#include "usb_mux.h"
#include "usb_pd_tcpm.h"

#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)

int pd_set_power_supply_ready(int port)
{
	/* Disable charging */
	board_charging_enable(port, 0);

	/* Provide VBUS */
	board_vbus_enable(port, 1);

	/* notify host of power info change */
	pd_send_host_event(PD_EVENT_POWER_CHANGE);

	return EC_SUCCESS; /* we are ready */
}

void pd_power_supply_reset(int port)
{
	/* Disable VBUS */
	board_vbus_enable(port, 0);

	/* notify host of power info change */
	pd_send_host_event(PD_EVENT_POWER_CHANGE);
}

int pd_check_vconn_swap(int port)
{
	/* in G3, do not allow vconn swap since pp5000_A rail is off */
	/* TODO: return gpio_get_level(GPIO_PMIC_EN); */
	return 1;
}

/* ----------------- Vendor Defined Messages ------------------ */
#ifdef CONFIG_USB_PD_ALT_MODE_DFP
static void svdm_dp_post_config(int port)
{
	dp_flags[port] |= DP_FLAGS_DP_ON;
	if (!(dp_flags[port] & DP_FLAGS_HPD_HI_PENDING))
		return;
	/* TODO: Update HPD to host */
}

static int svdm_dp_attention(int port, uint32_t *payload)
{
	int lvl = PD_VDO_DPSTS_HPD_LVL(payload[1]);

	/* TODO: Read HPD IRQ */

	dp_status[port] = payload[1];
	if (!(dp_flags[port] & DP_FLAGS_DP_ON)) {
		if (lvl)
			dp_flags[port] |= DP_FLAGS_HPD_HI_PENDING;
		return 1;
	}
	/* TODO: Update HPD to host */

	/* ack */
	return 1;
}
#endif /* CONFIG_USB_PD_ALT_MODE_DFP */