linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * wakeup.c - support wakeup devices

 * Copyright (C) 2004 Li Shaohua <shaohua.li@intel.com>

 */

​

#include <linux/init.h>

#include <linux/acpi.h>

#include <linux/kernel.h>

#include <linux/types.h>

​

#include "internal.h"

#include "sleep.h"

​

/*

 * We didn't lock acpi_device_lock in the file, because it invokes oops in

 * suspend/resume and isn't really required as this is called in S-state. At

 * that time, there is no device hotplug

 **/

#define _COMPONENT      ACPI_SYSTEM_COMPONENT

ACPI_MODULE_NAME("wakeup_devices")

​

/**

 * acpi_enable_wakeup_devices - Enable wake-up device GPEs.

 * @sleep_state: ACPI system sleep state.

 *

 * Enable wakeup device power of devices with the state.enable flag set and set

 * the wakeup enable mask bits in the GPE registers that correspond to wakeup

 * devices.

 */

void acpi_enable_wakeup_devices(u8 sleep_state)

{

    struct list_head *node, *next;

​

    list_for_each_safe(node, next, &acpi_wakeup_device_list) {

        struct acpi_device *dev =

            container_of(node, struct acpi_device, wakeup_list);

​

        if (!dev->wakeup.flags.valid

            || sleep_state > (u32) dev->wakeup.sleep_state

            || !(device_may_wakeup(&dev->dev)

                || dev->wakeup.prepare_count))

            continue;

​

        if (device_may_wakeup(&dev->dev))

            acpi_enable_wakeup_device_power(dev, sleep_state);

​

        /* The wake-up power should have been enabled already. */

        acpi_set_gpe_wake_mask(dev->wakeup.gpe_device, dev->wakeup.gpe_number,

                ACPI_GPE_ENABLE);

    }

}

​

/**

 * acpi_disable_wakeup_devices - Disable devices' wakeup capability.

 * @sleep_state: ACPI system sleep state.

 */

void acpi_disable_wakeup_devices(u8 sleep_state)

{

    struct list_head *node, *next;

​

    list_for_each_safe(node, next, &acpi_wakeup_device_list) {

        struct acpi_device *dev =