1 files changed, 0 insertions, 369 deletions

diff --git a/zephyr/program/nissa/nereid/src/usbc.c b/zephyr/program/nissa/nereid/src/usbc.c
deleted file mode 100644
index 1e87abfa0d..0000000000
--- a/zephyr/program/nissa/nereid/src/usbc.c
+++ /dev/null
@@ -1,369 +0,0 @@
-/* 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/sm5803.h"
-#include "driver/tcpm/it83xx_pd.h"
-#include "driver/tcpm/ps8xxx_public.h"
-#include "driver/tcpm/tcpci.h"
-#include "hooks.h"
-#include "nissa_common.h"
-#include "system.h"
-#include "usb_mux.h"
-
-#include <zephyr/logging/log.h>
-
-#include <ap_power/ap_power.h>
-
-LOG_MODULE_DECLARE(nissa, CONFIG_NISSA_LOG_LEVEL);
-
-/* Vconn control for integrated ITE TCPC */
-void board_pd_vconn_ctrl(int port, enum usbpd_cc_pin cc_pin, int enabled)
-{
-	/* Vconn control is only for port 0 */
-	if (port)
-		return;
-
-	if (cc_pin == USBPD_CC_PIN_1)
-		gpio_pin_set_dt(
-			GPIO_DT_FROM_NODELABEL(gpio_en_usb_c0_cc1_vconn),
-			!!enabled);
-	else
-		gpio_pin_set_dt(
-			GPIO_DT_FROM_NODELABEL(gpio_en_usb_c0_cc2_vconn),
-			!!enabled);
-}
-
-__override bool pd_check_vbus_level(int port, enum vbus_level level)
-{
-	return sm5803_check_vbus_level(port, level);
-}
-
-/*
- * Putting chargers into LPM when in suspend reduces power draw by about 8mW
- * per charger, but also seems critical to correct operation in source mode:
- * if chargers are not in LPM when a sink is first connected, VBUS sourcing
- * works even if the partner is later removed (causing LPM entry) and
- * reconnected (causing LPM exit). If in LPM initially, sourcing VBUS
- * consistently causes the charger to report (apparently spurious) overcurrent
- * failures.
- *
- * In short, this is important to making things work correctly but we don't
- * understand why.
- */
-static void board_chargers_suspend(struct ap_power_ev_callback *const cb,
-				   const struct ap_power_ev_data data)
-{
-	void (*fn)(int chgnum);
-
-	switch (data.event) {
-	case AP_POWER_SUSPEND:
-		fn = sm5803_enable_low_power_mode;
-		break;
-	case AP_POWER_RESUME:
-		fn = sm5803_disable_low_power_mode;
-		break;
-	default:
-		LOG_WRN("%s: power event %d is not recognized", __func__,
-			data.event);
-		return;
-	}
-
-	fn(CHARGER_PRIMARY);
-	if (board_get_charger_chip_count() > 1)
-		fn(CHARGER_SECONDARY);
-}
-
-static int board_chargers_suspend_init(const struct device *unused)
-{
-	static struct ap_power_ev_callback cb = {
-		.handler = board_chargers_suspend,
-		.events = AP_POWER_SUSPEND | AP_POWER_RESUME,
-	};
-	ap_power_ev_add_callback(&cb);
-	return 0;
-}
-SYS_INIT(board_chargers_suspend_init, APPLICATION, 0);
-
-int board_set_active_charge_port(int port)
-{
-	int is_real_port = (port >= 0 && port < board_get_usb_pd_port_count());
-	int i;
-	int old_port;
-	int rv;
-
-	if (!is_real_port && port != CHARGE_PORT_NONE)
-		return EC_ERROR_INVAL;
-
-	old_port = charge_manager_get_active_charge_port();
-	LOG_INF("Charge update: p%d -> p%d", old_port, port);
-
-	/* Check if port is sourcing VBUS. */
-	if (port != CHARGE_PORT_NONE && charger_is_sourcing_otg_power(port)) {
-		LOG_WRN("Skip enable p%d: already sourcing", port);
-		return EC_ERROR_INVAL;
-	}
-
-	/* Disable sinking on all ports except the desired one */
-	for (i = 0; i < board_get_usb_pd_port_count(); i++) {
-		if (i == port)
-			continue;
-
-		if (sm5803_vbus_sink_enable(i, 0))
-			/*
-			 * Do not early-return because this can fail during
-			 * power-on which would put us into a loop.
-			 */
-			LOG_WRN("p%d: sink path disable failed.", i);
-	}
-
-	/* Don't enable anything (stop here) if no ports were requested */
-	if ((port == CHARGE_PORT_NONE) || (old_port == port))
-		return EC_SUCCESS;
-
-	/*
-	 * 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. */
-	rv = sm5803_vbus_sink_enable(port, 1);
-	if (rv)
-		LOG_WRN("p%d: sink path enable failed: code %d", port, rv);
-
-	/* Allow the charger IC to begin/continue switching. */
-	charger_discharge_on_ac(0);
-
-	return rv;
-}
-
-uint16_t tcpc_get_alert_status(void)
-{
-	/*
-	 * TCPC 0 is embedded in the EC and processes interrupts in the chip
-	 * code (it83xx/intc.c). This function only needs to poll port C1 if
-	 * present.
-	 */
-	uint16_t status = 0;
-	int regval;
-
-	/* Is the C1 port present and its IRQ line asserted? */
-	if (board_get_usb_pd_port_count() == 2 &&
-	    !gpio_pin_get_dt(GPIO_DT_FROM_ALIAS(gpio_usb_c1_int_odl))) {
-		/*
-		 * C1 IRQ is shared between BC1.2 and TCPC; poll TCPC to see if
-		 * it asserted the IRQ.
-		 */
-		if (!tcpc_read16(1, TCPC_REG_ALERT, &regval)) {
-			if (regval)
-				status = PD_STATUS_TCPC_ALERT_1;
-		}
-	}
-
-	return status;
-}
-
-void pd_power_supply_reset(int port)
-{
-	int prev_en;
-
-	if (port < 0 || port >= board_get_usb_pd_port_count())
-		return;
-
-	prev_en = charger_is_sourcing_otg_power(port);
-
-	/* Disable Vbus */
-	charger_enable_otg_power(port, 0);
-
-	/* Discharge Vbus if previously enabled */
-	if (prev_en)
-		sm5803_set_vbus_disch(port, 1);
-
-	/* Notify host of power info change. */
-	pd_send_host_event(PD_EVENT_POWER_CHANGE);
-}
-
-int pd_set_power_supply_ready(int port)
-{
-	enum ec_error_list rv;
-
-	if (port < 0 || port > board_get_usb_pd_port_count()) {
-		LOG_WRN("Port C%d does not exist, cannot enable VBUS", port);
-		return EC_ERROR_INVAL;
-	}
-
-	/* Disable sinking */
-	rv = sm5803_vbus_sink_enable(port, 0);
-	if (rv) {
-		LOG_WRN("C%d failed to disable sinking: %d", port, rv);
-		return rv;
-	}
-
-	/* Disable Vbus discharge */
-	rv = sm5803_set_vbus_disch(port, 0);
-	if (rv) {
-		LOG_WRN("C%d failed to clear VBUS discharge: %d", port, rv);
-		return rv;
-	}
-
-	/* Provide Vbus */
-	rv = charger_enable_otg_power(port, 1);
-	if (rv) {
-		LOG_WRN("C%d failed to enable VBUS sourcing: %d", port, rv);
-		return rv;
-	}
-
-	/* Notify host of power info change. */
-	pd_send_host_event(PD_EVENT_POWER_CHANGE);
-
-	return EC_SUCCESS;
-}
-
-__override void typec_set_source_current_limit(int port, enum tcpc_rp_value rp)
-{
-	int rv;
-	const int current = rp == TYPEC_RP_3A0 ? 3000 : 1500;
-
-	rv = charger_set_otg_current_voltage(port, current, 5000);
-	if (rv != EC_SUCCESS) {
-		LOG_WRN("Failed to set source ilimit on port %d to %d: %d",
-			port, current, rv);
-	}
-}
-
-void board_reset_pd_mcu(void)
-{
-	/*
-	 * Do nothing. The integrated TCPC for C0 lacks a dedicated reset
-	 * command, and C1 (if present) doesn't have a reset pin connected
-	 * to the EC.
-	 */
-}
-
-#define INT_RECHECK_US 5000
-
-/* C0 interrupt line shared by BC 1.2 and charger */
-
-static void check_c0_line(void);
-DECLARE_DEFERRED(check_c0_line);
-
-static void notify_c0_chips(void)
-{
-	usb_charger_task_set_event(0, USB_CHG_EVENT_BC12);
-	sm5803_interrupt(0);
-}
-
-static void check_c0_line(void)
-{
-	/*
-	 * If line is still being held low, see if there's more to process from
-	 * one of the chips
-	 */
-	if (!gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL(gpio_usb_c0_int_odl))) {
-		notify_c0_chips();
-		hook_call_deferred(&check_c0_line_data, INT_RECHECK_US);
-	}
-}
-
-void usb_c0_interrupt(enum gpio_signal s)
-{
-	/* Cancel any previous calls to check the interrupt line */
-	hook_call_deferred(&check_c0_line_data, -1);
-
-	/* Notify all chips using this line that an interrupt came in */
-	notify_c0_chips();
-
-	/* Check the line again in 5ms */
-	hook_call_deferred(&check_c0_line_data, INT_RECHECK_US);
-}
-
-/* C1 interrupt line shared by BC 1.2, TCPC, and charger */
-static void check_c1_line(void);
-DECLARE_DEFERRED(check_c1_line);
-
-static void notify_c1_chips(void)
-{
-	schedule_deferred_pd_interrupt(1);
-	usb_charger_task_set_event(1, USB_CHG_EVENT_BC12);
-	/* Charger is handled in board_process_pd_alert */
-}
-
-static void check_c1_line(void)
-{
-	/*
-	 * If line is still being held low, see if there's more to process from
-	 * one of the chips.
-	 */
-	if (!gpio_pin_get_dt(GPIO_DT_FROM_ALIAS(gpio_usb_c1_int_odl))) {
-		notify_c1_chips();
-		hook_call_deferred(&check_c1_line_data, INT_RECHECK_US);
-	}
-}
-
-void usb_c1_interrupt(enum gpio_signal s)
-{
-	/* Cancel any previous calls to check the interrupt line */
-	hook_call_deferred(&check_c1_line_data, -1);
-
-	/* Notify all chips using this line that an interrupt came in */
-	notify_c1_chips();
-
-	/* Check the line again in 5ms */
-	hook_call_deferred(&check_c1_line_data, INT_RECHECK_US);
-}
-
-/*
- * Check state of IRQ lines at startup, ensuring an IRQ that happened before
- * the EC started up won't get lost (leaving the IRQ line asserted and blocking
- * any further interrupts on the port).
- *
- * Although the PD task will check for pending TCPC interrupts on startup,
- * the charger sharing the IRQ will not be polled automatically.
- */
-void board_handle_initial_typec_irq(void)
-{
-	check_c0_line();
-	if (board_get_usb_pd_port_count() == 2)
-		check_c1_line();
-}
-/*
- * This must run after sub-board detection (which happens in EC main()),
- * but isn't depended on by anything else either.
- */
-DECLARE_HOOK(HOOK_INIT, board_handle_initial_typec_irq, HOOK_PRIO_LAST);
-
-/*
- * Handle charger interrupts in the PD task. Not doing so can lead to a priority
- * inversion where we fail to respond to TCPC alerts quickly enough because we
- * don't get another edge on a shared IRQ until the charger interrupt is cleared
- * (or the IRQ is polled again), which happens in the low-priority charger task:
- * the high-priority type-C handler is thus blocked on the lower-priority
- * charger.
- *
- * To avoid that, we run charger interrupts at the same priority.
- */
-void board_process_pd_alert(int port)
-{
-	/*
-	 * Port 0 doesn't use an external TCPC, so its interrupts don't need
-	 * this special handling.
-	 */
-	if (port == 1 &&
-	    !gpio_pin_get_dt(GPIO_DT_FROM_ALIAS(gpio_usb_c1_int_odl))) {
-		sm5803_handle_interrupt(port);
-	}
-}
-
-int pd_snk_is_vbus_provided(int port)
-{
-	int chg_det = 0;
-
-	sm5803_get_chg_det(port, &chg_det);
-
-	return chg_det;
-}