Edit File: ntc_thermistor.h
/* * ntc_thermistor.h - 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 */ #ifndef _LINUX_NTC_H #define _LINUX_NTC_H struct iio_channel; enum ntc_thermistor_type { TYPE_NCPXXWB473, TYPE_NCPXXWL333, }; struct ntc_thermistor_platform_data { /* * One (not both) of read_uV and read_ohm should be provided and only * one of the two should be provided. * Both functions should return negative value for an error case. * * pullup_uV, pullup_ohm, pulldown_ohm, and connect are required to use * read_uV() * * How to setup pullup_ohm, pulldown_ohm, and connect is * described at Documentation/hwmon/ntc_thermistor * * pullup/down_ohm: 0 for infinite / not-connected * * chan: iio_channel pointer to communicate with the ADC which the * thermistor is using for conversion of the analog values. */ int (*read_uv)(struct ntc_thermistor_platform_data *); unsigned int pullup_uv; unsigned int pullup_ohm; unsigned int pulldown_ohm; enum { NTC_CONNECTED_POSITIVE, NTC_CONNECTED_GROUND } connect; struct iio_channel *chan; int (*read_ohm)(void); }; #endif /* _LINUX_NTC_H */