162 lines
3.7 KiB
C
162 lines
3.7 KiB
C
/*
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* Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/acpi.h>
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MODULE_LICENSE("GPL");
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static ssize_t irst_show_wakeup_events(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct acpi_device *acpi;
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unsigned long long value;
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acpi_status status;
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acpi = to_acpi_device(dev);
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status = acpi_evaluate_integer(acpi->handle, "GFFS", NULL, &value);
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if (ACPI_FAILURE(status))
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return -EINVAL;
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return sprintf(buf, "%lld\n", value);
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}
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static ssize_t irst_store_wakeup_events(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct acpi_device *acpi;
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acpi_status status;
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unsigned long value;
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int error;
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acpi = to_acpi_device(dev);
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error = kstrtoul(buf, 0, &value);
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if (error)
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return error;
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status = acpi_execute_simple_method(acpi->handle, "SFFS", value);
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if (ACPI_FAILURE(status))
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return -EINVAL;
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return count;
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}
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static struct device_attribute irst_wakeup_attr = {
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.attr = { .name = "wakeup_events", .mode = 0600 },
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.show = irst_show_wakeup_events,
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.store = irst_store_wakeup_events
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};
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static ssize_t irst_show_wakeup_time(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct acpi_device *acpi;
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unsigned long long value;
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acpi_status status;
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acpi = to_acpi_device(dev);
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status = acpi_evaluate_integer(acpi->handle, "GFTV", NULL, &value);
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if (ACPI_FAILURE(status))
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return -EINVAL;
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return sprintf(buf, "%lld\n", value);
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}
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static ssize_t irst_store_wakeup_time(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct acpi_device *acpi;
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acpi_status status;
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unsigned long value;
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int error;
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acpi = to_acpi_device(dev);
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error = kstrtoul(buf, 0, &value);
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if (error)
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return error;
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status = acpi_execute_simple_method(acpi->handle, "SFTV", value);
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if (ACPI_FAILURE(status))
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return -EINVAL;
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return count;
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}
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static struct device_attribute irst_timeout_attr = {
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.attr = { .name = "wakeup_time", .mode = 0600 },
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.show = irst_show_wakeup_time,
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.store = irst_store_wakeup_time
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};
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static int irst_add(struct acpi_device *acpi)
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{
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int error;
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error = device_create_file(&acpi->dev, &irst_timeout_attr);
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if (unlikely(error))
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return error;
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error = device_create_file(&acpi->dev, &irst_wakeup_attr);
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if (unlikely(error))
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device_remove_file(&acpi->dev, &irst_timeout_attr);
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return error;
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}
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static int irst_remove(struct acpi_device *acpi)
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{
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device_remove_file(&acpi->dev, &irst_wakeup_attr);
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device_remove_file(&acpi->dev, &irst_timeout_attr);
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return 0;
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}
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static const struct acpi_device_id irst_ids[] = {
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{"INT3392", 0},
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{"", 0}
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};
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static struct acpi_driver irst_driver = {
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.owner = THIS_MODULE,
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.name = "intel_rapid_start",
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.class = "intel_rapid_start",
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.ids = irst_ids,
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.ops = {
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.add = irst_add,
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.remove = irst_remove,
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},
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};
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module_acpi_driver(irst_driver);
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MODULE_DEVICE_TABLE(acpi, irst_ids);
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