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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* ntc_thermistor.h - NTC Thermistors
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*
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* Copyright (C) 2010 Samsung Electronics
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* MyungJoo Ham <myungjoo.ham@samsung.com>
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*/
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#ifndef _LINUX_NTC_H
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#define _LINUX_NTC_H
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struct iio_channel;
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enum ntc_thermistor_type {
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TYPE_B57330V2103,
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TYPE_B57891S0103,
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TYPE_NCPXXWB473,
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TYPE_NCPXXWF104,
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TYPE_NCPXXWL333,
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TYPE_NCPXXXH103,
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};
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struct ntc_thermistor_platform_data {
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/*
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* One (not both) of read_uV and read_ohm should be provided and only
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* one of the two should be provided.
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* Both functions should return negative value for an error case.
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*
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* pullup_uV, pullup_ohm, pulldown_ohm, and connect are required to use
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* read_uV()
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*
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* How to setup pullup_ohm, pulldown_ohm, and connect is
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* described at Documentation/hwmon/ntc_thermistor.rst
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*
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* pullup/down_ohm: 0 for infinite / not-connected
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*
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* chan: iio_channel pointer to communicate with the ADC which the
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* thermistor is using for conversion of the analog values.
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*/
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int (*read_uv)(struct ntc_thermistor_platform_data *);
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unsigned int pullup_uv;
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unsigned int pullup_ohm;
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unsigned int pulldown_ohm;
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enum { NTC_CONNECTED_POSITIVE, NTC_CONNECTED_GROUND } connect;
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struct iio_channel *chan;
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int (*read_ohm)(void);
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};
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#endif /* _LINUX_NTC_H */
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