Hi Martin, On Sun, Jun 18, 2017 at 04:45:15PM +0200, Martin Kepplinger wrote: > On 2017-06-18 15:17, Baruch Siach wrote: > > Is it possible to set the ts_calibrate results into the kernel input layer > > using the EVIOCSABS ioctl()? That would make the calibration instantly > > available to all touchscreen input device users, independent from the > > tslib library. > > What version of tslib do you use? You should use a recent version from > Debian sid, for example. I'm building the latest version statically using Buildroot. > Do you mean the ts_read_mt() tslib samples data? You might mainly use > the linear plugin with ts_calibrate, but it's actually a special case. > > > > > The problem I am facing is that I'm on X11, stuck with an old kernel (pre > > of_touchscreen.c), and a Debian installation that does not package > > xf86-input-tslib. The xf86-input-evdev Calibration option doesn't work at all > > for some reason. > > Have you read the README.md documentation, specifically > https://github.com/kergoth/tslib#use-the-filtered-result-in-your-system-ts_uinput-method > ? Thanks for the pointer. I was not aware of that trick. I still think that configuring the original input device is easier, since it doesn't require special configuration on the Xorg side. > But xf86-input-tslib can also be installed seperately. It's indeed not > yet packaged for Debian, but available here: > https://github.com/merge/xf86-input-tslib > > > Looking around I could not find any EVIOCSABS user. The EVIOCSABS ioctl() > > as been in the kernel since pre-git times. > > > > Am I missing something obvious here? > > Actually I don't know how common or useful it would be to edit the real > device' values with EVIOCSABS. I always went the uinput way, creating a > new device, until now. > > I'll think about it. Feel free to open an issue if you have a concrete idea. I found eventually that both systemd/udev and libevdev do EVIOCSABS. systemd/udev could not help me because the version I have installed on target is 215, while this feature was introduced only in 220 (commit 51c0c2869845a0). So I settled for running the libevdev relatively new libevdev-tweak-device utility from a custom udev rule. This solution works nicely. > > FWIW, the touchscreen driver is edt-ft5x06.c, that works nicely except > > from the calibration. Both X and Y are reported x2 at the X11 level. > > I have used this driver too. But it shouldn't matter at all. Thanks for your help, baruch -- http://baruch.siach.name/blog/ ~. .~ Tk Open Systems =}------------------------------------------------ooO--U--Ooo------------{= - baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
