On Thu, Dec 08, 2022 at 04:58:36PM +0000, Allen Ballway wrote: > Certain touchscreen devices, such as the ELAN9034, are oriented > incorrectly and report touches on opposite points on the X and Y axes. > For example, a 100x200 screen touched at (10,20) would report (90, 180) > and vice versa. > > This is fixed by adding device quirks to transform the touch points > into the correct spaces, from X -> MAX(X) - X, and Y -> MAX(Y) - Y. > > Signed-off-by: Allen Ballway <ballway@xxxxxxxxxxxx> > --- > V1 -> V2: Address review comments, change to use DMI match. Confirmed > MT_TOOL_X/Y require transformation and update orientation based on > flipped axes. I think you might need to push the DMI match into i2c-hid driver, and bubble the quirks up here, otherwise if you connect a 2nd USB touchscreen to such a system will also result in the quirk being applied to it as far as I understand. In i2c-hid you can make a fine-grained match on vendor/product and system to limit the quirk to hopefully the right peripheral. Thanks. -- Dmitry
