The firmware of both supported devices report a X/Y maximum of 4096,
whereas in reality, it is eight times larger. Fixed with this patch.
Signed-off-by: Henrik Rydberg <rydberg@xxxxxxxxxxx>
---
drivers/hid/hid-egalax.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/hid/hid-egalax.c b/drivers/hid/hid-egalax.c
index 23f832b..3b490a3 100644
--- a/drivers/hid/hid-egalax.c
+++ b/drivers/hid/hid-egalax.c
@@ -56,6 +56,7 @@ static int egalax_input_mapping(struct hid_device *hdev, struct hid_input *hi,
case HID_UP_GENDESK:
switch (usage->hid) {
case HID_GD_X:
+ field->logical_maximum <<= 3;
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_POSITION_X);
set_abs(input, ABS_MT_POSITION_X, field, 0);
@@ -63,6 +64,7 @@ static int egalax_input_mapping(struct hid_device *hdev, struct hid_input *hi,
set_abs(input, ABS_X, field, 0);
return 1;
case HID_GD_Y:
+ field->logical_maximum <<= 3;
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_POSITION_Y);
set_abs(input, ABS_MT_POSITION_Y, field, 0);
--
1.7.1
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