2 files changed, 62 insertions, 17 deletions

diff --git a/include/linux/input.h b/include/linux/input.h
index 6ef44465db8d..53f873e8556c 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -733,11 +733,12 @@ struct input_keymap_entry {
 #define ABS_MT_BLOB_ID          0x38    /* Group a set of packets as a blob */
 #define ABS_MT_TRACKING_ID      0x39    /* Unique ID of initiated contact */
 #define ABS_MT_PRESSURE         0x3a    /* Pressure on contact area */
+#define ABS_MT_DISTANCE         0x3b    /* Contact hover distance */
 
 #ifdef __KERNEL__
 /* Implementation details, userspace should not care about these */
 #define ABS_MT_FIRST            ABS_MT_TOUCH_MAJOR
-#define ABS_MT_LAST             ABS_MT_PRESSURE
+#define ABS_MT_LAST             ABS_MT_DISTANCE
 #endif
 
 #define ABS_MAX                 0x3f
@@ -848,6 +849,7 @@ struct input_keymap_entry {
  */
 #define MT_TOOL_FINGER          0
 #define MT_TOOL_PEN             1
+#define MT_TOOL_MAX             1
 
 /*
  * Values describing the status of a force-feedback effect
@@ -1083,14 +1085,6 @@ struct ff_effect {
 #include <linux/mod_devicetable.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];
-};
-
-/**
  * struct input_dev - represents an input device
  * @name: name of the device
  * @phys: physical path to the device in the system hierarchy
@@ -1130,6 +1124,7 @@ struct input_mt_slot {
  *      of tracked contacts
  * @mtsize: number of MT slots the device uses
  * @slot: MT slot currently being transmitted
+ * @trkid: stores MT tracking ID for the current contact
  * @absinfo: array of &struct absinfo elements holding information
  *      about absolute axes (current value, min, max, flat, fuzz,
  *      resolution)
@@ -1214,6 +1209,7 @@ struct input_dev {
         struct input_mt_slot *mt;
         int mtsize;
         int slot;
+        int trkid;
 
         struct input_absinfo *absinfo;
 
@@ -1463,11 +1459,6 @@ static inline void input_mt_sync(struct input_dev *dev)
         input_event(dev, EV_SYN, SYN_MT_REPORT, 0);
 }
 
-static inline void input_mt_slot(struct input_dev *dev, int slot)
-{
-        input_event(dev, EV_ABS, ABS_MT_SLOT, slot);
-}
-
 void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code);
 
 /**
@@ -1580,8 +1571,5 @@ int input_ff_erase(struct input_dev *dev, int effect_id, struct file *file);
 int input_ff_create_memless(struct input_dev *dev, void *data,
                 int (*play_effect)(struct input_dev *, void *, struct ff_effect *));
 
-int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots);
-void input_mt_destroy_slots(struct input_dev *dev);
-
 #endif
 #endif
diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h
new file mode 100644
index 000000000000..b3ac06a4435d
--- /dev/null
+++ b/include/linux/input/mt.h
@@ -0,0 +1,57 @@
+#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>
+
+#define TRKID_MAX       0xffff
+
+/**
+ * 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_init_slots(struct input_dev *dev, unsigned int num_slots);
+void input_mt_destroy_slots(struct input_dev *dev);
+
+static inline int input_mt_new_trkid(struct input_dev *dev)
+{
+        return dev->trkid++ & TRKID_MAX;
+}
+
+static inline void input_mt_slot(struct input_dev *dev, int slot)
+{
+        input_event(dev, EV_ABS, ABS_MT_SLOT, slot);
+}
+
+void input_mt_report_slot_state(struct input_dev *dev,
+                                unsigned int tool_type, bool active);
+
+void input_mt_report_finger_count(struct input_dev *dev, int count);
+void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count);
+
+#endif