linux-imx

/*

 * processor_driver.c - ACPI Processor Driver

 *

 *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>

 *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>

 *  Copyright (C) 2004       Dominik Brodowski <linux@brodo.de>

 *  Copyright (C) 2004  Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>

 *              - Added processor hotplug support

 *  Copyright (C) 2013, Intel Corporation

 *                      Rafael J. Wysocki <rafael.j.wysocki@intel.com>

 *

 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or (at

 *  your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful, but

 *  WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 *  General Public License for more details.

 *

 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 */

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/init.h>

#include <linux/cpufreq.h>

#include <linux/cpu.h>

#include <linux/cpuidle.h>

#include <linux/slab.h>

#include <linux/acpi.h>

​

#include <acpi/processor.h>

​

#include "internal.h"

​

#define ACPI_PROCESSOR_NOTIFY_PERFORMANCE 0x80

#define ACPI_PROCESSOR_NOTIFY_POWER 0x81

#define ACPI_PROCESSOR_NOTIFY_THROTTLING    0x82

​

#define _COMPONENT      ACPI_PROCESSOR_COMPONENT

ACPI_MODULE_NAME("processor_driver");

​

MODULE_AUTHOR("Paul Diefenbaugh");

MODULE_DESCRIPTION("ACPI Processor Driver");

MODULE_LICENSE("GPL");

​

static int acpi_processor_start(struct device *dev);

static int acpi_processor_stop(struct device *dev);

​

static const struct acpi_device_id processor_device_ids[] = {

    {ACPI_PROCESSOR_OBJECT_HID, 0},

    {ACPI_PROCESSOR_DEVICE_HID, 0},

    {"", 0},

};

MODULE_DEVICE_TABLE(acpi, processor_device_ids);

​

static struct device_driver acpi_processor_driver = {

    .name = "processor",

    .bus = &cpu_subsys,