On 2024-03-28 18:53, Dmitry Torokhov wrote: > [ now CCing for real ] > > Hi Frieder, > > On Wed, Mar 27, 2024 at 10:39:12PM +0100, Frieder Hannenheim wrote: >> This is a bit of a stripped down and partially reworked driver for the >> synaptics_tcm_oncell touchscreen. I based my work off the driver in the >> LineageOS kernel found at >> https://github.com/LineageOS/android_kernel_oneplus_sm8250 branch >> lineage-20. The code was originally written by OnePlus developers but >> I'm not sure how to credit them correctly. > > So the first question is: does this device not use Synaptics RMI4 > protocol? > > I am CCing Marge Yang of Synaptics who may shed some light on the kind > of touch controller this is. > > Thanks. Hi Dmitri, the synaptics-s3908 uses a command based protocol whereas rmi4 is register-based (as far as I understand it, I haven't been able to read up on it properly since information on the internet is sparse). So I'm pretty sure that it can not be controlled via rmi4. Best wishes, Frieder
