linux-imx

// SPDX-License-Identifier: GPL-2.0+

/*

 *  Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org>

 */

​

#include <linux/acpi.h>

#include <linux/module.h>

#include <linux/slab.h>

​

MODULE_LICENSE("GPL");

​

static ssize_t irst_show_wakeup_events(struct device *dev,

                       struct device_attribute *attr,

                       char *buf)

{

    struct acpi_device *acpi;

    unsigned long long value;

    acpi_status status;

​

    acpi = to_acpi_device(dev);

​

    status = acpi_evaluate_integer(acpi->handle, "GFFS", NULL, &value);

    if (ACPI_FAILURE(status))

        return -EINVAL;

​

    return sprintf(buf, "%lld\n", value);

}

​

static ssize_t irst_store_wakeup_events(struct device *dev,

                    struct device_attribute *attr,

                    const char *buf, size_t count)

{

    struct acpi_device *acpi;

    acpi_status status;

    unsigned long value;

    int error;

​

    acpi = to_acpi_device(dev);

​

    error = kstrtoul(buf, 0, &value);

    if (error)

        return error;

​

    status = acpi_execute_simple_method(acpi->handle, "SFFS", value);

    if (ACPI_FAILURE(status))

        return -EINVAL;

​

    return count;

}

​

static struct device_attribute irst_wakeup_attr = {

    .attr = { .name = "wakeup_events", .mode = 0600 },

    .show = irst_show_wakeup_events,

    .store = irst_store_wakeup_events

};

​

static ssize_t irst_show_wakeup_time(struct device *dev,

                     struct device_attribute *attr, char *buf)

{

    struct acpi_device *acpi;

    unsigned long long value;

    acpi_status status;

​