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/*
* Copyright (C) 2010 Freescale Semiconductor, Inc.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/kd.h>
#include <linux/fs.h>
#include <linux/ioctl.h>
#include <linux/input.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/pmic_external.h>
#include "../arch/arm/mach-mx5/mx51_pins.h"
#define KEYCODE_ONOFF KEY_F4
#if 1
#define pk_printf printk
#else
#define pk_printf(...)
#endif
/*! Input device structure. */
struct input_dev *mxcpwrkey_dev = NULL;
static bool key_press=false;
static void power_key_event_handler(void)
{
if (!key_press) {
key_press = true;
input_report_key(mxcpwrkey_dev, KEYCODE_ONOFF, 1);
pk_printf("%s_KeyUP\n",__func__);
}else {
if (key_press){
key_press = false;
input_report_key(mxcpwrkey_dev, KEYCODE_ONOFF, 0);
pk_printf("%s_KeyDown\n",__func__);
}
}
}
static int mxcpwrkey_probe(struct platform_device *pdev)
{
int retval,err;
pmic_event_callback_t power_key_event;
printk("I.MX5 powerkey probe\n");
/*
init_completion(&pk_cmd_done);
pwrkey_task = kthread_run(powerkey_thread, pdev, "powerkey");
if (IS_ERR(pwrkey_task)) {
err = PTR_ERR(pwrkey_task);
printk(KERN_ERR "powerkey: Failed to start powerkey_thread, err: %d\n", err);
goto err1;
}
*/
mxcpwrkey_dev = input_allocate_device();
if (!mxcpwrkey_dev) {
printk(KERN_ERR
"mxcpwrkey_dev: not enough memory for input device\n");
retval = -ENOMEM;
goto err1;
}
mxcpwrkey_dev->name = "mxc_power_key";
mxcpwrkey_dev->phys = "mxcpwrkey/input0";;
mxcpwrkey_dev->id.bustype = BUS_HOST ;
mxcpwrkey_dev->evbit[0] = BIT_MASK(EV_KEY) ;
power_key_event.param = NULL;
power_key_event.func = (void *)power_key_event_handler;
pmic_event_subscribe(EVENT_PWRONI, power_key_event);
input_set_capability(mxcpwrkey_dev, EV_KEY, KEYCODE_ONOFF);
retval = input_register_device(mxcpwrkey_dev);
if (retval < 0) {
printk(KERN_ERR
"mxcpwrkey_dev: failed to register input device\n");
goto err2;
}
return 0;
err2:
input_free_device(mxcpwrkey_dev);
err1:
return retval;
}
static int mxcpwrkey_remove(struct platform_device *pdev)
{
return 0;
}
static int mxc_pwrkey_suspend(struct platform_device *pdev, pm_message_t state)
{
return 0;
}
static int mxc_pwrkey_resume(struct platform_device *pdev)
{
return 0;
}
static struct platform_driver mxcpwrkey_driver = {
.driver = {
.name = "mxcpwrkey",
},
.probe = mxcpwrkey_probe,
.remove = mxcpwrkey_remove,
.suspend = mxc_pwrkey_suspend,
.resume = mxc_pwrkey_resume,
};
static int __init mxcpwrkey_init(void)
{
platform_driver_register(&mxcpwrkey_driver);
return 0;
}
static void __exit mxcpwrkey_exit(void)
{
platform_driver_unregister(&mxcpwrkey_driver);
}
module_init(mxcpwrkey_init);
module_exit(mxcpwrkey_exit);
MODULE_AUTHOR("eben");
MODULE_DESCRIPTION("MXC power key Driver");
MODULE_LICENSE("GPL");
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