Input: add detailed multi-touch finger data report protocol

[mirror_ubuntu-bionic-kernel.git] / include / linux / input.h

diff --git a/include/linux/input.h b/include/linux/input.h
index 6b28048fc56820152a1f95074b2721e285bab762..0e6ff5de35884b6dbd749be01d5b2d681a2aa1ba 100644 (file)
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -106,6 +106,7 @@ struct input_absinfo {
 
 #define SYN_REPORT             0
 #define SYN_CONFIG             1
+#define SYN_MT_REPORT          2
 
 /*
  * Keys and buttons
@@ -445,6 +446,7 @@ struct input_absinfo {
 #define BTN_STYLUS2            0x14c
 #define BTN_TOOL_DOUBLETAP     0x14d
 #define BTN_TOOL_TRIPLETAP     0x14e
+#define BTN_TOOL_QUADTAP       0x14f   /* Four fingers on trackpad */
 
 #define BTN_WHEEL              0x150
 #define BTN_GEAR_DOWN          0x150
@@ -644,6 +646,17 @@ struct input_absinfo {
 #define ABS_TOOL_WIDTH         0x1c
 #define ABS_VOLUME             0x20
 #define ABS_MISC               0x28
+
+#define ABS_MT_TOUCH_MAJOR     0x30    /* Major axis of touching ellipse */
+#define ABS_MT_TOUCH_MINOR     0x31    /* Minor axis (omit if circular) */
+#define ABS_MT_WIDTH_MAJOR     0x32    /* Major axis of approaching ellipse */
+#define ABS_MT_WIDTH_MINOR     0x33    /* Minor axis (omit if circular) */
+#define ABS_MT_ORIENTATION     0x34    /* Ellipse orientation */
+#define ABS_MT_POSITION_X      0x35    /* Center X ellipse position */
+#define ABS_MT_POSITION_Y      0x36    /* Center Y ellipse position */
+#define ABS_MT_TOOL_TYPE       0x37    /* Type of touching device */
+#define ABS_MT_BLOB_ID         0x38    /* Group a set of packets as a blob */
+
 #define ABS_MAX                        0x3f
 #define ABS_CNT                        (ABS_MAX+1)
 
@@ -742,6 +755,12 @@ struct input_absinfo {
 #define BUS_GSC                        0x1A
 #define BUS_ATARI              0x1B
 
+/*
+ * MT_TOOL types
+ */
+#define MT_TOOL_FINGER         0
+#define MT_TOOL_PEN            1
+
 /*
  * Values describing the status of a force-feedback effect
  */
@@ -1311,6 +1330,11 @@ static inline void input_sync(struct input_dev *dev)
        input_event(dev, EV_SYN, SYN_REPORT, 0);
 }
 
+static inline void input_mt_sync(struct input_dev *dev)
+{
+       input_event(dev, EV_SYN, SYN_MT_REPORT, 0);
+}
+
 void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code);
 
 static inline void input_set_abs_params(struct input_dev *dev, int axis, int min, int max, int fuzz, int flat)