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/* Copyright 2021 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Corsola baseboard-specific USB-C configuration */
#include <zephyr/drivers/gpio.h>
#include <ap_power/ap_power.h>
#include "adc.h"
#include "baseboard_usbc_config.h"
#include "button.h"
#include "charger.h"
#include "charge_state_v2.h"
#include "console.h"
#include "ec_commands.h"
#include "extpower.h"
#include "gpio/gpio_int.h"
#include "hooks.h"
#include "i2c.h"
#include "lid_switch.h"
#include "task.h"
#include "ppc/syv682x_public.h"
#include "power.h"
#include "power_button.h"
#include "spi.h"
#include "switch.h"
#include "tablet_mode.h"
#include "uart.h"
#include "usb_charge.h"
#include "usb_mux.h"
#include "usb_pd_tcpm.h"
#include "usb_tc_sm.h"
#include "usbc_ppc.h"
#include "variant_db_detection.h"
#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ##args)
#define CPRINTF(format, args...) cprintf(CC_SYSTEM, format, ##args)
/* a flag for indicating the tasks are inited. */
static bool tasks_inited;
/* Baseboard */
static void baseboard_init(void)
{
#ifdef CONFIG_VARIANT_CORSOLA_USBA
gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_usba));
#endif
}
DECLARE_HOOK(HOOK_INIT, baseboard_init, HOOK_PRIO_PRE_DEFAULT);
__override uint8_t board_get_usb_pd_port_count(void)
{
if (corsola_get_db_type() == CORSOLA_DB_HDMI) {
if (tasks_inited) {
return CONFIG_USB_PD_PORT_MAX_COUNT;
} else {
return CONFIG_USB_PD_PORT_MAX_COUNT - 1;
}
} else if (corsola_get_db_type() == CORSOLA_DB_NONE) {
return CONFIG_USB_PD_PORT_MAX_COUNT - 1;
}
return CONFIG_USB_PD_PORT_MAX_COUNT;
}
/* USB-A */
void usb_a0_interrupt(enum gpio_signal signal)
{
enum usb_charge_mode mode = gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL(
gpio_ap_xhci_init_done)) ?
USB_CHARGE_MODE_ENABLED :
USB_CHARGE_MODE_DISABLED;
const int xhci_stat = gpio_get_level(signal);
for (int i = 0; i < USB_PORT_COUNT; i++) {
usb_charge_set_mode(i, mode, USB_ALLOW_SUSPEND_CHARGE);
}
for (int i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
/*
* Enable DRP toggle after XHCI inited. This is used to follow
* USB 3.2 spec 10.3.1.1.
*/
if (xhci_stat) {
pd_set_dual_role(i, PD_DRP_TOGGLE_ON);
} else if (tc_is_attached_src(i)) {
/*
* This is a AP reset S0->S0 transition.
* We should set the role back to sink.
*/
pd_set_dual_role(i, PD_DRP_FORCE_SINK);
}
}
}
__override enum pd_dual_role_states pd_get_drp_state_in_s0(void)
{
if (gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL(gpio_ap_xhci_init_done))) {
return PD_DRP_TOGGLE_ON;
} else {
return PD_DRP_FORCE_SINK;
}
}
void board_set_charge_limit(int port, int supplier, int charge_ma, int max_ma,
int charge_mv)
{
charge_set_input_current_limit(
MAX(charge_ma, CONFIG_CHARGER_INPUT_CURRENT), charge_mv);
}
void board_pd_vconn_ctrl(int port, enum usbpd_cc_pin cc_pin, int enabled)
{
/*
* We ignore the cc_pin and PPC vconn because polarity and PPC vconn
* should already be set correctly in the PPC driver via the pd
* state machine.
*/
}
/**
* Handle PS185 HPD changing state.
*/
int debounced_hpd;
static void ps185_hdmi_hpd_deferred(void)
{
const int new_hpd =
gpio_pin_get_dt(GPIO_DT_FROM_ALIAS(gpio_ps185_ec_dp_hpd));
/* HPD status not changed, probably a glitch, just return. */
if (debounced_hpd == new_hpd) {
return;
}
debounced_hpd = new_hpd;
if (!corsola_is_dp_muxable(USBC_PORT_C1)) {
if (debounced_hpd) {
CPRINTS("C0 port is already muxed.");
}
return;
}
if (debounced_hpd) {
dp_status[USBC_PORT_C1] =
VDO_DP_STATUS(0, /* HPD IRQ ... not applicable */
0, /* HPD level ... not applicable */
0, /* exit DP? ... no */
0, /* usb mode? ... no */
0, /* multi-function ... no */
1, /* DP enabled ... yes */
0, /* power low? ... no */
(!!DP_FLAGS_DP_ON));
/* update C1 virtual mux */
usb_mux_set(USBC_PORT_C1, USB_PD_MUX_DP_ENABLED,
USB_SWITCH_DISCONNECT,
0 /* polarity, don't care */);
gpio_pin_set_dt(GPIO_DT_FROM_NODELABEL(dp_aux_path_sel),
debounced_hpd);
CPRINTS("Set DP_AUX_PATH_SEL: %d", 1);
}
svdm_set_hpd_gpio(USBC_PORT_C1, debounced_hpd);
CPRINTS(debounced_hpd ? "HDMI plug" : "HDMI unplug");
}
DECLARE_DEFERRED(ps185_hdmi_hpd_deferred);
static void ps185_hdmi_hpd_disconnect_deferred(void)
{
const int new_hpd =
gpio_pin_get_dt(GPIO_DT_FROM_ALIAS(gpio_ps185_ec_dp_hpd));
if (debounced_hpd == new_hpd && !new_hpd) {
dp_status[USBC_PORT_C1] =
VDO_DP_STATUS(0, /* HPD IRQ ... not applicable */
0, /* HPD level ... not applicable */
0, /* exit DP? ... no */
0, /* usb mode? ... no */
0, /* multi-function ... no */
0, /* DP enabled ... no */
0, /* power low? ... no */
(!DP_FLAGS_DP_ON));
usb_mux_set(USBC_PORT_C1, USB_PD_MUX_NONE,
USB_SWITCH_DISCONNECT,
0 /* polarity, don't care */);
}
}
DECLARE_DEFERRED(ps185_hdmi_hpd_disconnect_deferred);
#define PS185_HPD_DEBOUCE 250
#define HPD_SINK_ABSENCE_DEBOUNCE (2 * MSEC)
static void hdmi_hpd_interrupt(enum gpio_signal signal)
{
hook_call_deferred(&ps185_hdmi_hpd_deferred_data, PS185_HPD_DEBOUCE);
if (!gpio_pin_get_dt(GPIO_DT_FROM_ALIAS(gpio_ps185_ec_dp_hpd))) {
hook_call_deferred(&ps185_hdmi_hpd_disconnect_deferred_data,
HPD_SINK_ABSENCE_DEBOUNCE);
} else {
hook_call_deferred(&ps185_hdmi_hpd_disconnect_deferred_data,
-1);
}
}
/* HDMI/TYPE-C function shared subboard interrupt */
void x_ec_interrupt(enum gpio_signal signal)
{
int sub = corsola_get_db_type();
if (sub == CORSOLA_DB_TYPEC) {
/* C1: PPC interrupt */
ppc_interrupt(signal);
} else if (sub == CORSOLA_DB_HDMI) {
hdmi_hpd_interrupt(signal);
} else {
CPRINTS("Undetected subboard interrupt.");
}
}
static void board_hdmi_handler(struct ap_power_ev_callback *cb,
struct ap_power_ev_data data)
{
int value;
switch (data.event) {
default:
return;
case AP_POWER_RESUME:
value = 1;
break;
case AP_POWER_SUSPEND:
value = 0;
break;
}
gpio_pin_set_dt(GPIO_DT_FROM_ALIAS(gpio_en_hdmi_pwr), value);
gpio_pin_set_dt(GPIO_DT_FROM_ALIAS(gpio_ps185_pwrdn_odl), value);
}
static void tasks_init_deferred(void)
{
tasks_inited = true;
}
DECLARE_DEFERRED(tasks_init_deferred);
static void baseboard_x_ec_gpio2_init(void)
{
static struct ppc_drv virtual_ppc_drv = { 0 };
static struct tcpm_drv virtual_tcpc_drv = { 0 };
static struct bc12_drv virtual_bc12_drv = { 0 };
/* no sub board */
if (corsola_get_db_type() == CORSOLA_DB_NONE) {
return;
}
/* type-c: USB_C1_PPC_INT_ODL / hdmi: PS185_EC_DP_HPD */
gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_x_ec_gpio2));
if (corsola_get_db_type() == CORSOLA_DB_TYPEC) {
gpio_pin_interrupt_configure_dt(
GPIO_DT_FROM_ALIAS(gpio_usb_c1_ppc_int_odl),
GPIO_INT_EDGE_FALLING);
return;
}
if (corsola_get_db_type() == CORSOLA_DB_HDMI) {
static struct ap_power_ev_callback cb;
ap_power_ev_init_callback(&cb, board_hdmi_handler,
AP_POWER_RESUME | AP_POWER_SUSPEND);
ap_power_ev_add_callback(&cb);
}
/* drop related C1 port drivers when it's a HDMI DB. */
ppc_chips[USBC_PORT_C1] =
(const struct ppc_config_t){ .drv = &virtual_ppc_drv };
tcpc_config[USBC_PORT_C1] =
(const struct tcpc_config_t){ .drv = &virtual_tcpc_drv };
bc12_ports[USBC_PORT_C1] =
(const struct bc12_config){ .drv = &virtual_bc12_drv };
/* Use virtual mux to notify AP the mainlink direction. */
usb_muxes[USBC_PORT_C1] = (struct usb_mux){
.usb_port = USBC_PORT_C1,
.driver = &virtual_usb_mux_driver,
.hpd_update = &virtual_hpd_update,
};
/*
* If a HDMI DB is attached, C1 port tasks will be exiting in that
* the port number is larger than board_get_usb_pd_port_count().
* After C1 port tasks finished, we intentionally increase the port
* count by 1 for usb_mux to access the C1 virtual mux for notifying
* mainlink direction.
*/
hook_call_deferred(&tasks_init_deferred_data, 2 * SECOND);
}
DECLARE_HOOK(HOOK_INIT, baseboard_x_ec_gpio2_init, HOOK_PRIO_DEFAULT);
__override uint8_t get_dp_pin_mode(int port)
{
if (corsola_get_db_type() == CORSOLA_DB_HDMI && port == USBC_PORT_C1) {
if (usb_mux_get(USBC_PORT_C1) & USB_PD_MUX_DP_ENABLED) {
return MODE_DP_PIN_E;
} else {
return 0;
}
}
return pd_dfp_dp_get_pin_mode(port, dp_status[port]);
}
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