This new property indicates that the trackpad is able to track more than two contacts, but can only report the positions of two contacts due to bus bandwidth limitations.
Signed-off-by: Derek Foreman <derek.foreman@xxxxxxxxxxxxxxx>
---
drivers/input/mouse/synaptics.c | 3 +++
include/linux/input.h | 1 +
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 3c68663..a8ff669 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -701,6 +701,9 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
__set_bit(INPUT_PROP_POINTER, dev->propbit);
+ if (priv->use_bounding_box == 0)
+ __set_bit(INPUT_PROP_SYNAPTICS_T3R2, dev->propbit);
+
__set_bit(EV_ABS, dev->evbit);
input_set_abs_params(dev, ABS_X,
XMIN_NOMINAL, priv->x_max ?: XMAX_NOMINAL, 0, 0);
diff --git a/include/linux/input.h b/include/linux/input.h
index 388cdef..b667e88 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -137,6 +137,7 @@ struct input_keymap_entry {
#define INPUT_PROP_DIRECT 0x01 /* direct input devices */
#define INPUT_PROP_BUTTONPAD 0x02 /* has button(s) under pad */
#define INPUT_PROP_SEMI_MT 0x03 /* touch rectangle only */
+#define INPUT_PROP_SYNAPTICS_T3R2 0x04 /* synaptics track 3 report 2 */
#define INPUT_PROP_INCONSISTENT_RATE 0x05 /* device report rate changes */
#define INPUT_PROP_MAX 0x1f
--
1.7.5.3
--
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