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/* 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 "atomic.h"
#include "extpower.h"
#include "charge_manager.h"
#include "chipset.h"
#include "common.h"
#include "console.h"
#include "driver/tcpm/ps8xxx.h"
#include "gpio.h"
#include "hooks.h"
#include "host_command.h"
#include "registers.h"
#include "system.h"
#include "task.h"
#include "timer.h"
#include "util.h"
#include "usb_mux.h"
#include "usb_pd.h"
#include "usb_pd_tcpm.h"
#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
static uint8_t vbus_en[CONFIG_USB_PD_PORT_COUNT];
static uint8_t vbus_rp[CONFIG_USB_PD_PORT_COUNT] = {TYPEC_RP_1A5, TYPEC_RP_1A5};
int board_vbus_source_enabled(int port)
{
return vbus_en[port];
}
static void board_vbus_update_source_current(int port)
{
gpio_set_level(port ? GPIO_USB_C1_3A_EN : GPIO_USB_C0_3A_EN,
vbus_rp[port] == TYPEC_RP_3A0 ? 1 : 0);
gpio_set_level(port ? GPIO_USB_C1_5V_EN : GPIO_USB_C0_5V_EN,
vbus_en[port]);
}
__override void typec_set_source_current_limit(int port, enum tcpc_rp_value rp)
{
vbus_rp[port] = rp;
/* change the GPIO driving the load switch if needed */
board_vbus_update_source_current(port);
}
int pd_set_power_supply_ready(int port)
{
/* Disable charging */
gpio_set_level(port ? GPIO_USB_C1_CHARGE_L :
GPIO_USB_C0_CHARGE_L, 1);
/* Ensure we advertise the proper available current quota */
charge_manager_source_port(port, 1);
/* Provide VBUS */
vbus_en[port] = 1;
board_vbus_update_source_current(port);
pd_set_vbus_discharge(port, 0);
/* 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)
{
int prev_en;
prev_en = vbus_en[port];
/* Disable VBUS */
vbus_en[port] = 0;
board_vbus_update_source_current(port);
/* Enable discharge if we were previously sourcing 5V */
if (prev_en)
pd_set_vbus_discharge(port, 1);
/* Give back the current quota we are no longer using */
charge_manager_source_port(port, 0);
/* notify host of power info change */
pd_send_host_event(PD_EVENT_POWER_CHANGE);
}
int pd_snk_is_vbus_provided(int port)
{
return !gpio_get_level(port ? GPIO_USB_C1_VBUS_WAKE_L :
GPIO_USB_C0_VBUS_WAKE_L);
}
int pd_check_vconn_swap(int port)
{
/* in G3, do not allow vconn swap since pp5000_A rail is off */
return gpio_get_level(GPIO_PMIC_SLP_SUS_L);
}
__override void pd_execute_data_swap(int port, int data_role)
{
/* Only port 0 supports device mode. */
if (port != 0)
return;
gpio_set_level(GPIO_USB2_ID, (data_role == PD_ROLE_UFP) ? 0 : 1);
}
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