linux-imx

/*

 * ntc_thermistor.c - NTC Thermistors

 *

 *  Copyright (C) 2010 Samsung Electronics

 *  MyungJoo Ham <myungjoo.ham@samsung.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.

 *

 * 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/slab.h>

#include <linux/module.h>

#include <linux/pm_runtime.h>

#include <linux/math64.h>

#include <linux/platform_device.h>

#include <linux/err.h>

#include <linux/of.h>

#include <linux/of_device.h>

​

#include <linux/platform_data/ntc_thermistor.h>

​

#include <linux/iio/iio.h>

#include <linux/iio/machine.h>

#include <linux/iio/driver.h>

#include <linux/iio/consumer.h>

​

#include <linux/hwmon.h>

​

struct ntc_compensation {

    int     temp_c;

    unsigned int    ohm;

};

​

/*

 * Used as index in a zero-terminated array, holes not allowed so

 * that NTC_LAST is the first empty array entry.

 */

enum {

    NTC_B57330V2103,

    NTC_B57891S0103,

    NTC_NCP03WB473,

    NTC_NCP03WF104,

    NTC_NCP15WB473,

    NTC_NCP15WL333,

    NTC_NCP15XH103,

    NTC_NCP18WB473,

    NTC_NCP21WB473,

    NTC_LAST,

};

​

static const struct platform_device_id ntc_thermistor_id[] = {