2 * ntc_thermistor.h - NTC Thermistors
4 * Copyright (C) 2010 Samsung Electronics
5 * MyungJoo Ham <myungjoo.ham@samsung.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 enum ntc_thermistor_type
{
29 struct ntc_thermistor_platform_data
{
31 * One (not both) of read_uV and read_ohm should be provided and only
32 * one of the two should be provided.
33 * Both functions should return negative value for an error case.
35 * pullup_uV, pullup_ohm, pulldown_ohm, and connect are required to use
38 * How to setup pullup_ohm, pulldown_ohm, and connect is
39 * described at Documentation/hwmon/ntc
41 * pullup/down_ohm: 0 for infinite / not-connected
44 unsigned int pullup_uV
;
46 unsigned int pullup_ohm
;
47 unsigned int pulldown_ohm
;
48 enum { NTC_CONNECTED_POSITIVE
, NTC_CONNECTED_GROUND
} connect
;
50 int (*read_ohm
)(void);
53 #endif /* _LINUX_NTC_H */