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/*
* midas-extcon.c - EXTCON (External Connector)
*
* Copyright (C) 2012 Samsung Electrnoics
*
* 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/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/err.h>
#include <linux/extcon.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/host_notify.h>
#include <linux/power_supply.h>
#include <linux/regulator/machine.h>
#include <plat/devs.h>
#include <plat/udc-hs.h>
#ifdef CONFIG_JACK_MON
#include <linux/jack.h>
#endif
#define EXTCON_DEV_NAME "max77693-muic"
static struct extcon_dev *midas_extcon;
static struct notifier_block extcon_nb;
static struct work_struct extcon_notifier_work;
static unsigned long prev_value;
static void midas_extcon_notifier_work(struct work_struct *work)
{
/* TODO */
}
static int midas_extcon_notifier(struct notifier_block *self,
unsigned long event, void *ptr)
{
/* Store the previous cable state of extcon device */
prev_value = event;
schedule_work(&extcon_notifier_work);
return NOTIFY_DONE;
}
static int __init midas_extcon_init(void)
{
int ret;
midas_extcon = extcon_get_extcon_dev(EXTCON_DEV_NAME);
if (!midas_extcon) {
printk(KERN_ERR "Failed to get extcon device of %s\n",
EXTCON_DEV_NAME);
ret = -EINVAL;
goto err_extcon;
}
INIT_WORK(&extcon_notifier_work, midas_extcon_notifier_work);
extcon_nb.notifier_call = midas_extcon_notifier;
ret = extcon_register_notifier(midas_extcon, &extcon_nb);
if (ret < 0) {
pr_err("Failed to register extcon device for mms_ts\n");
ret = -EINVAL;
goto err_extcon;
}
/* TODO */
return 0;
err_extcon:
midas_extcon = NULL;
return ret;
}
late_initcall(midas_extcon_init);
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