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authorHenrik Rydberg <rydberg@euromail.se>2010-11-27 09:16:48 +0100
committerHenrik Rydberg <rydberg@euromail.se>2010-12-16 10:39:57 +0100
commit47c78e891323513e9909729b44033e2c6649e2b7 (patch)
tree828e0da90418a890653ef2f0af3cf81714fe5c80 /include/linux/input
parentc8ddb2713c624f432fa5fe3c7ecffcdda46ea0d4 (diff)
input: mt: Break out slots handling
In preparation for common code to handle a larger set of MT slots devices, move the slots handling over to a separate file. Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Diffstat (limited to 'include/linux/input')
-rw-r--r--include/linux/input/mt.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h
new file mode 100644
index 000000000000..4f5e9d0e2eae
--- /dev/null
+++ b/include/linux/input/mt.h
@@ -0,0 +1,44 @@
+#ifndef _INPUT_MT_H
+#define _INPUT_MT_H
+
+/*
+ * Input Multitouch Library
+ *
+ * Copyright (c) 2010 Henrik Rydberg
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/input.h>
+
+/**
+ * struct input_mt_slot - represents the state of an input MT slot
+ * @abs: holds current values of ABS_MT axes for this slot
+ */
+struct input_mt_slot {
+ int abs[ABS_MT_LAST - ABS_MT_FIRST + 1];
+};
+
+static inline void input_mt_set_value(struct input_mt_slot *slot,
+ unsigned code, int value)
+{
+ slot->abs[code - ABS_MT_FIRST] = value;
+}
+
+static inline int input_mt_get_value(const struct input_mt_slot *slot,
+ unsigned code)
+{
+ return slot->abs[code - ABS_MT_FIRST];
+}
+
+int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots);
+void input_mt_destroy_slots(struct input_dev *dev);
+
+static inline void input_mt_slot(struct input_dev *dev, int slot)
+{
+ input_event(dev, EV_ABS, ABS_MT_SLOT, slot);
+}
+
+#endif