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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.
*/
/* Shared USB-C policy for Grunt boards */
#include "charge_manager.h"
#include "common.h"
#include "compile_time_macros.h"
#include "console.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)
#define PDO_FIXED_FLAGS (PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |\
PDO_FIXED_COMM_CAP)
int pd_check_vconn_swap(int port)
{
/* in G3, do not allow vconn swap since 5V rail is off */
return gpio_get_level(GPIO_S5_PGOOD);
}
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 pd_snk_is_vbus_provided(int port)
{
return ppc_is_vbus_present(port);
}
int board_vbus_source_enabled(int port)
{
return ppc_is_sourcing_vbus(port);
}
/* ----------------- Vendor Defined Messages ------------------ */
#ifdef CONFIG_USB_PD_ALT_MODE_DFP
__override int svdm_dp_config(int port, uint32_t *payload)
{
int opos = pd_alt_mode(port, USB_SID_DISPLAYPORT);
int mf_pref = PD_VDO_DPSTS_MF_PREF(dp_status[port]);
int pin_mode = pd_dfp_dp_get_pin_mode(port, dp_status[port]);
if (!pin_mode)
return 0;
usb_mux_set(port, mf_pref ? TYPEC_MUX_DOCK : TYPEC_MUX_DP,
USB_SWITCH_CONNECT, pd_get_polarity(port));
payload[0] = VDO(USB_SID_DISPLAYPORT, 1,
CMD_DP_CONFIG | VDO_OPOS(opos));
payload[1] = VDO_DP_CFG(pin_mode, /* pin mode */
1, /* DPv1.3 signaling */
2); /* UFP connected */
return 2;
};
/*
* timestamp of the next possible toggle to ensure the 2-ms spacing
* between IRQ_HPD.
*/
static uint64_t hpd_deadline[CONFIG_USB_PD_PORT_COUNT];
#define PORT_TO_HPD(port) ((port) ? GPIO_USB_C1_DP_HPD : GPIO_USB_C0_DP_HPD)
__override void svdm_dp_post_config(int port)
{
const struct usb_mux * const mux = &usb_muxes[port];
dp_flags[port] |= DP_FLAGS_DP_ON;
if (!(dp_flags[port] & DP_FLAGS_HPD_HI_PENDING))
return;
gpio_set_level(PORT_TO_HPD(port), 1);
/* set the minimum time delay (2ms) for the next HPD IRQ */
hpd_deadline[port] = get_time().val + HPD_USTREAM_DEBOUNCE_LVL;
mux->hpd_update(port, 1, 0);
}
#endif /* CONFIG_USB_PD_ALT_MODE_DFP */
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