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/* Copyright 2021 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 <init.h>
#include <drivers/gpio.h>
#include <ap_power/ap_power.h>
#include "gpio.h"
#include "hooks.h"
static void board_i2c3_ctrl(bool enable)
{
if (DEVICE_DT_GET(DT_PHANDLE(DT_NODELABEL(i2c3), gpio_dev)) ==
DEVICE_DT_GET(DT_NODELABEL(gpiof))) {
/*
* TODO(b/226296649):
* Use pinctrl APIs to enable/disable an interface.
*/
struct gctrl_it8xxx2_regs *const gctrl_base =
(struct gctrl_it8xxx2_regs *)
DT_REG_ADDR(DT_NODELABEL(gctrl));
if (enable) {
gctrl_base->GCTRL_PMER3 |= IT8XXX2_GCTRL_SMB3PSEL;
} else {
gctrl_base->GCTRL_PMER3 &= ~IT8XXX2_GCTRL_SMB3PSEL;
}
}
}
static void board_enable_i2c3(void)
{
board_i2c3_ctrl(1);
}
DECLARE_HOOK(HOOK_CHIPSET_PRE_INIT, board_enable_i2c3, HOOK_PRIO_FIRST);
static void board_disable_i2c3(void)
{
board_i2c3_ctrl(0);
}
DECLARE_HOOK(HOOK_CHIPSET_HARD_OFF, board_disable_i2c3, HOOK_PRIO_LAST);
static void board_suspend_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_NODELABEL(gpio_en_5v_usm), value);
}
static int install_suspend_handler(const struct device *unused)
{
static struct ap_power_ev_callback cb;
/*
* Add a callback for suspend/resume.
*/
ap_power_ev_init_callback(&cb, board_suspend_handler,
AP_POWER_RESUME | AP_POWER_SUSPEND);
ap_power_ev_add_callback(&cb);
return 0;
}
SYS_INIT(install_suspend_handler, APPLICATION, 1);
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