Merge branch 'imx-cleanup' of git://git.pengutronix.de/git/ukl/linux-2.6 into imx-cleanup

1 files changed, 53 insertions, 0 deletions

diff --git a/include/linux/platform_data/ntc_thermistor.h b/include/linux/platform_data/ntc_thermistor.h
new file mode 100644
index 000000000000..abd286215279
--- /dev/null
+++ b/include/linux/platform_data/ntc_thermistor.h
@@ -0,0 +1,53 @@
+/*
+ * 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
+
+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
+         *
+         * pullup/down_ohm: 0 for infinite / not-connected
+         */
+        int (*read_uV)(void);
+        unsigned int pullup_uV;
+
+        unsigned int pullup_ohm;
+        unsigned int pulldown_ohm;
+        enum { NTC_CONNECTED_POSITIVE, NTC_CONNECTED_GROUND } connect;
+
+        int (*read_ohm)(void);
+};
+
+#endif /* _LINUX_NTC_H */