The X and Y values have two more significant bits in the same byte that contains click status. Include these in the reported value. Thanks to Iain Hibbert of NetBSD for pointing this out. Signed-off-by: Michael Poole <mdpoole@xxxxxxxxxxx> --- drivers/hid/hid-magicmouse.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c index 0b89c1c..7cdda23 100644 --- a/drivers/hid/hid-magicmouse.c +++ b/drivers/hid/hid-magicmouse.c @@ -267,8 +267,8 @@ static int magicmouse_raw_event(struct hid_device *hdev, * to have the current touch information before * generating a click event. */ - x = (signed char)data[1]; - y = (signed char)data[2]; + x = (int)(((data[3] & 0x0c) << 28) | (data[1] << 22)) >> 22; + y = (int)(((data[3] & 0x30) << 26) | (data[2] << 22)) >> 22; clicks = data[3]; break; case 0x20: /* Theoretically battery status (0-100), but I have -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
