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/* Copyright 2022 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "charge_state_v2.h"
#include "chipset.h"
#include "driver/charger/isl923x_public.h"
#include "driver/retimer/anx7483_public.h"
#include "driver/tcpm/raa489000.h"
#include "driver/tcpm/tcpci.h"
#include "hooks.h"
#include "system.h"
#include "usb_mux.h"
#include <zephyr/logging/log.h>
LOG_MODULE_DECLARE(nissa, CONFIG_NISSA_LOG_LEVEL);
struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_MAX_COUNT] = {
{
.bus_type = EC_BUS_TYPE_I2C,
.i2c_info = {
.port = I2C_PORT_USB_C0_TCPC,
.addr_flags = RAA489000_TCPC0_I2C_FLAGS,
},
.drv = &raa489000_tcpm_drv,
/* RAA489000 implements TCPCI 2.0 */
.flags = TCPC_FLAGS_TCPCI_REV2_0 |
TCPC_FLAGS_VBUS_MONITOR,
},
{ /* sub-board */
.bus_type = EC_BUS_TYPE_I2C,
.i2c_info = {
.port = I2C_PORT_USB_C1_TCPC,
.addr_flags = RAA489000_TCPC0_I2C_FLAGS,
},
.drv = &raa489000_tcpm_drv,
/* RAA489000 implements TCPCI 2.0 */
.flags = TCPC_FLAGS_TCPCI_REV2_0 |
TCPC_FLAGS_VBUS_MONITOR,
},
};
int board_is_sourcing_vbus(int port)
{
int regval;
tcpc_read(port, TCPC_REG_POWER_STATUS, ®val);
return !!(regval & TCPC_REG_POWER_STATUS_SOURCING_VBUS);
}
int board_set_active_charge_port(int port)
{
int is_real_port = (port >= 0 && port < CONFIG_USB_PD_PORT_MAX_COUNT);
int i;
int old_port;
if (!is_real_port && port != CHARGE_PORT_NONE)
return EC_ERROR_INVAL;
old_port = charge_manager_get_active_charge_port();
LOG_INF("New chg p%d", port);
/* Disable all ports. */
if (port == CHARGE_PORT_NONE) {
for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
tcpc_write(i, TCPC_REG_COMMAND,
TCPC_REG_COMMAND_SNK_CTRL_LOW);
raa489000_enable_asgate(i, false);
}
return EC_SUCCESS;
}
/* Check if port is sourcing VBUS. */
if (board_is_sourcing_vbus(port)) {
LOG_WRN("Skip enable p%d", port);
return EC_ERROR_INVAL;
}
/*
* Turn off the other ports' sink path FETs, before enabling the
* requested charge port.
*/
for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
if (i == port)
continue;
if (tcpc_write(i, TCPC_REG_COMMAND,
TCPC_REG_COMMAND_SNK_CTRL_LOW))
LOG_WRN("p%d: sink path disable failed.", i);
raa489000_enable_asgate(i, false);
}
/*
* Stop the charger IC from switching while changing ports. Otherwise,
* we can overcurrent the adapter we're switching to. (crbug.com/926056)
*/
if (old_port != CHARGE_PORT_NONE)
charger_discharge_on_ac(1);
/* Enable requested charge port. */
if (raa489000_enable_asgate(port, true) ||
tcpc_write(port, TCPC_REG_COMMAND,
TCPC_REG_COMMAND_SNK_CTRL_HIGH)) {
LOG_WRN("p%d: sink path enable failed.", port);
charger_discharge_on_ac(0);
return EC_ERROR_UNKNOWN;
}
/* Allow the charger IC to begin/continue switching. */
charger_discharge_on_ac(0);
return EC_SUCCESS;
}
uint16_t tcpc_get_alert_status(void)
{
uint16_t status = 0;
int regval;
/*
* The interrupt line is shared between the TCPC and BC1.2 detector IC.
* Therefore, go out and actually read the alert registers to report the
* alert status.
*/
if (!gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL(gpio_usb_c0_int_odl))) {
if (!tcpc_read16(0, TCPC_REG_ALERT, ®val)) {
/* The TCPCI Rev 1.0 spec says to ignore bits 14:12. */
if (!(tcpc_config[0].flags & TCPC_FLAGS_TCPCI_REV2_0))
regval &= ~((1 << 14) | (1 << 13) | (1 << 12));
if (regval)
status |= PD_STATUS_TCPC_ALERT_0;
}
}
if (!gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL(gpio_usb_c1_int_odl))) {
if (!tcpc_read16(1, TCPC_REG_ALERT, ®val)) {
/* TCPCI spec Rev 1.0 says to ignore bits 14:12. */
if (!(tcpc_config[1].flags & TCPC_FLAGS_TCPCI_REV2_0))
regval &= ~((1 << 14) | (1 << 13) | (1 << 12));
if (regval)
status |= PD_STATUS_TCPC_ALERT_1;
}
}
return status;
}
void pd_power_supply_reset(int port)
{
/* Disable VBUS */
tcpc_write(port, TCPC_REG_COMMAND, TCPC_REG_COMMAND_SRC_CTRL_LOW);
/* Notify host of power info change. */
pd_send_host_event(PD_EVENT_POWER_CHANGE);
}
__override void typec_set_source_current_limit(int port, enum tcpc_rp_value rp)
{
if (port < 0 || port >= CONFIG_USB_PD_PORT_MAX_COUNT)
return;
raa489000_set_output_current(port, rp);
}
int pd_set_power_supply_ready(int port)
{
int rv;
if (port >= CONFIG_USB_PD_PORT_MAX_COUNT)
return EC_ERROR_INVAL;
/* Disable charging. */
rv = tcpc_write(port, TCPC_REG_COMMAND, TCPC_REG_COMMAND_SNK_CTRL_LOW);
if (rv)
return rv;
/* Our policy is not to source VBUS when the AP is off. */
if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
return EC_ERROR_NOT_POWERED;
/* Provide Vbus. */
rv = tcpc_write(port, TCPC_REG_COMMAND, TCPC_REG_COMMAND_SRC_CTRL_HIGH);
if (rv)
return rv;
rv = raa489000_enable_asgate(port, true);
if (rv)
return rv;
/* Notify host of power info change. */
pd_send_host_event(PD_EVENT_POWER_CHANGE);
return EC_SUCCESS;
}
void board_reset_pd_mcu(void)
{
/*
* TODO(b:147316511): could send a reset command to the TCPC here
* if needed.
*/
}
/*
* xivur doesn't support BC1.2 like other nissa devices, so the USB-C interrupt
* signals aren't shared and don't need any special handling.
*/
void usb_interrupt(enum gpio_signal signal)
{
int port;
if (signal == GPIO_SIGNAL(DT_NODELABEL(gpio_usb_c0_int_odl))) {
port = 0;
} else {
port = 1;
}
schedule_deferred_pd_interrupt(port);
}
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