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authorHenrik Rydberg <rydberg@euromail.se>2012-09-15 15:15:58 +0200
committerHenrik Rydberg <rydberg@euromail.se>2012-09-19 19:50:17 +0200
commit8d18fba282120a4a8e4416d1202522ffae8cad58 (patch)
tree22e3ddabba314c9ad544b9fefe004194205c2940 /include
parent4cbe5a555fa58a79b6ecbb6c531b8bab0650778d (diff)
Input: Break out MT data
Move all MT-related things to a separate place. This saves some bytes for non-mt input devices, and prepares for new MT features. Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Tested-by: Ping Cheng <pingc@wacom.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Diffstat (limited to 'include')
-rw-r--r--include/linux/input.h11
-rw-r--r--include/linux/input/mt.h18
2 files changed, 18 insertions, 11 deletions
diff --git a/include/linux/input.h b/include/linux/input.h
index 725dcd0f63a4..9da4f5796fd6 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -1203,11 +1203,7 @@ struct ff_effect {
* software autorepeat
* @timer: timer for software autorepeat
* @rep: current values for autorepeat parameters (delay, rate)
- * @mt: pointer to array of struct input_mt_slot holding current values
- * 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
+ * @mt: pointer to multitouch state
* @absinfo: array of &struct input_absinfo elements holding information
* about absolute axes (current value, min, max, flat, fuzz,
* resolution)
@@ -1287,10 +1283,7 @@ struct input_dev {
int rep[REP_CNT];
- struct input_mt_slot *mt;
- int mtsize;
- int slot;
- int trkid;
+ struct input_mt *mt;
struct input_absinfo *absinfo;
diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h
index f86737586e19..63458bced77d 100644
--- a/include/linux/input/mt.h
+++ b/include/linux/input/mt.h
@@ -23,6 +23,20 @@ struct input_mt_slot {
int abs[ABS_MT_LAST - ABS_MT_FIRST + 1];
};
+/**
+ * struct input_mt - state of tracked contacts
+ * @trkid: stores MT tracking ID for the next contact
+ * @num_slots: number of MT slots the device uses
+ * @slot: MT slot currently being transmitted
+ * @slots: array of slots holding current values of tracked contacts
+ */
+struct input_mt {
+ int trkid;
+ int num_slots;
+ int slot;
+ struct input_mt_slot slots[];
+};
+
static inline void input_mt_set_value(struct input_mt_slot *slot,
unsigned code, int value)
{
@@ -38,9 +52,9 @@ static inline int input_mt_get_value(const struct input_mt_slot *slot,
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)
+static inline int input_mt_new_trkid(struct input_mt *mt)
{
- return dev->trkid++ & TRKID_MAX;
+ return mt->trkid++ & TRKID_MAX;
}
static inline void input_mt_slot(struct input_dev *dev, int slot)