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/* Copyright 2018 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 "chipset.h"
#include "common.h"
#include "console.h"
#include "compile_time_macros.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"
#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
int pd_check_vconn_swap(int port)
{
/* Do not allow VCONN swap is 5V is off. */
return gpio_get_level(GPIO_EN_5V);
}
__override void pd_execute_data_swap(int port,
enum pd_data_role data_role)
{
int level;
/* Only port 0 supports device mode. */
if (port != 0)
return;
level = (data_role == PD_ROLE_UFP) ? 1 : 0;
gpio_set_level(GPIO_USB2_ID, level);
gpio_set_level(GPIO_USB2_VBUSSENSE, level);
}
void pd_power_supply_reset(int port)
{
/*
* Disable VBUS and discharge to vSafe0V.
*
* The PPC will automatically disable the discharge circuitry once it
* reaches vSafe0V.
*/
ppc_vbus_source_enable(port, 0);
ppc_discharge_vbus(port, 1);
#ifdef CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT
/* Give back the current quota we are no longer using */
charge_manager_source_port(port, 0);
#endif /* defined(CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT) */
/* Notify host of power info change. */
pd_send_host_event(PD_EVENT_POWER_CHANGE);
}
int pd_set_power_supply_ready(int port)
{
int rv;
if (port >= ppc_cnt)
return EC_ERROR_INVAL;
/* Disable charging. */
rv = ppc_vbus_sink_enable(port, 0);
if (rv)
return rv;
/* The 5V rail used for sourcing is not powered when the AP is off. */
if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
return EC_ERROR_NOT_POWERED;
/* Provide Vbus. */
rv = ppc_vbus_source_enable(port, 1);
if (rv)
return rv;
#ifdef CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT
/* Ensure we advertise the proper available current quota */
charge_manager_source_port(port, 1);
#endif /* defined(CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT) */
/* Notify host of power info change. */
pd_send_host_event(PD_EVENT_POWER_CHANGE);
return EC_SUCCESS;
}
/* ----------------- Vendor Defined Messages ------------------ */
__override void svdm_safe_dp_mode(int port)
{
/* make DP interface safe until configure */
usb_mux_set(port, USB_PD_MUX_NONE,
USB_SWITCH_CONNECT,
polarity_rm_dts(pd_get_polarity(port)));
/*
* Isolate the SBU lines.
*
* Older boards don't have the SBU line bypass needed for CCD, so never
* disable the SBU lines for port 0.
*/
if ((board_get_version() < 2) && (port == 0))
CPRINTS("Skip disable SBU lines for C0.");
else
ppc_set_sbu(port, 0);
}
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