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authorHenrik Rydberg <rydberg@euromail.se>2012-09-01 09:27:20 +0200
committerHenrik Rydberg <rydberg@euromail.se>2012-09-19 19:50:19 +0200
commit17a465a7f2d6ce31738a3a76591afeab165f185a (patch)
treeb10a27eb43a6eb0aee31aa851c00936ec3edcc17 /include/linux/input
parent7c1a87897c75139dec258eb03e1a24fb73385b73 (diff)
Input: MT - Get slot by key
Some devices use an internal key for tracking which cannot be directly mapped to slots. This patch provides a key-to-slot mapping, which can be used by drivers of such devices. Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Diffstat (limited to 'include/linux/input')
-rw-r--r--include/linux/input/mt.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h
index 6b6f7c8e95bf..cc5cca774bab 100644
--- a/include/linux/input/mt.h
+++ b/include/linux/input/mt.h
@@ -24,10 +24,12 @@
* struct input_mt_slot - represents the state of an input MT slot
* @abs: holds current values of ABS_MT axes for this slot
* @frame: last frame at which input_mt_report_slot_state() was called
+ * @key: optional driver designation of this slot
*/
struct input_mt_slot {
int abs[ABS_MT_LAST - ABS_MT_FIRST + 1];
unsigned int frame;
+ unsigned int key;
};
/**
@@ -111,4 +113,6 @@ struct input_mt_pos {
int input_mt_assign_slots(struct input_dev *dev, int *slots,
const struct input_mt_pos *pos, int num_pos);
+int input_mt_get_slot_by_key(struct input_dev *dev, int key);
+
#endif