Hi David, On Thu, Jul 31, 2025 at 11:06:50PM +0200, David Heidelberg via B4 Relay wrote: > With the growing popularity of running upstream Linux on mobile devices, > we're beginning to run into more and more edgecases. The OnePlus 6 is a > fairly well supported 2018 era smartphone, selling over a million units > in it's first 22 days. With this level of popularity, it's almost > inevitable that we get third party replacement displays, and as a > result, replacement touchscreen controllers. > > The OnePlus 6 shipped with an extremely usecase specific touchscreen > driver, it implemented only the bare minimum parts of the highly generic > rmi4 protocol, instead hardcoding most of the register addresses. > > As a result, the third party touchscreen controllers that are often > found in replacement screens, implement only the registers that the > downstream driver reads from. They additionally have other restrictions > such as heavy penalties on unaligned reads. > > This series attempts to implement the necessary workaround to support > some of these chips with the rmi4 driver. Although it's worth noting > that at the time of writing there are other unofficial controllers in > the wild that don't work even with these patches. > > We have been shipping these patches in postmarketOS for the last several > years, and they are known to not cause any regressions on the OnePlus > 6/6T (with the official Synaptics controller), however I don't own any > other rmi4 hardware to further validate this. Sorry for not handling the patches in the last few submissions. I am planning on addressing them once merge window opens. Thanks. -- Dmitry
