Android marks found axes as 'valid' only if they have a minimum
and maximum value that aren't equal. Since we don't actually
assign any range information for ABS_MISC, Android doesn't bother
to mark it such. This prevents userspace from being able to make
use of tool serial information.
Signed-off-by: Jason Gerecke <killertofu@xxxxxxxxx>
---
drivers/input/tablet/wacom_wac.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index 8ccfe91..869e9c9 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -1468,6 +1468,8 @@ static void wacom_abs_set_axis(struct input_dev *input_dev,
{
struct wacom_features *features = &wacom_wac->features;
+ input_set_abs_params(input_dev, ABS_MISC, INT_MIN, INT_MAX, 0, 0);
+
if (features->device_type == BTN_TOOL_PEN) {
input_set_abs_params(input_dev, ABS_X, 0, features->x_max,
features->x_fuzz, 0);
--
1.8.3.4
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