-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hello Dmitry, On Fri, 2017-02-17 at 00:48 -0800, Dmitry Torokhov wrote: > It looks like the patch is trying to provide a way to disable the > touchpad when transitioning in tablet mode. The keyboard/touchpad get disabled, by hardware, when flipped to tablet mode. Since currently, the driver has no way to expose a tablet-mode interface, we relied on this behavior, for the Lenovo Yoga device types. > In ChromeOS we have a notion > of "inhibiting" input devices, where userspace policy daemon tells the > kernel that it is not interested in events from a given device and input > core will suppress events from such device (and driver may optionally > put device into low power mode, if it chooses to do so). But in this > case the control seems to be totally outside of the input driver (which > I suspect is PS/2 device), so the policy daemon would have to have > specific knowledge of this new knob. > > BTW, I am not sure if this is actually reliable: if system goes to S3 > with lid open and user changes it into tablet form, nobody will tell the > EC that touchpad should be ignored and it will wake up the tablet. I am not sure what you mean here. But: root@learner:/sys/bus/platform/devices/VPC2004:00# When in normal mode^C root@learner:/sys/bus/platform/devices/VPC2004:00# cat touchpad_mode 1 S3 Suspend here. THen flip hw to tablet mode. Now, hit power btn to Resume. root@learner:/sys/bus/platform/devices/VPC2004:00# Now in tablet mode^C root@learner:/sys/bus/platform/devices/VPC2004:00# cat touchpad_mode 0 - -- Ritesh Raj Sarraf | http://people.debian.org/~rrs Debian - The Universal Operating System -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEQCVDstmIVAB/Yn02pjpYo/LhdWkFAlimwAQACgkQpjpYo/Lh dWkzIw/+NMiQ4A/OplUP/g6mTfba5zyuN0g9Or6RwzXyPrFsWbPAN4E6pcNIM1OT oy8RAnrqdSQymVH5atbR/ysPwlzG19+LWB4FVlVdkDMKkVonAHmUX+mL9+KFa7E5 +RmpS9Hzc6cLv1kpKMUeLD7j9U3I4NkUEsxDZwLk916KE6fCthGsmbn1gGADv3oT /lErDW7MLaImR67cmHmRhfhIotQPokcn3OVT/Eb7K8UjvXQLlWnDxMdxlQ7xDTua aJ3c/lB+FQytwp/JBSbNpzspNcCX5mmkh6PERXhxLJzL1CpCz3qnwKwKyeoGFcjv goj+CTZNsnGqaBuZThNI2vVWJRHqGCX2qp3IyWrSzNa6j5SfMTlgr0a/WsI7rpiY 4+81OXoeCVcr+ZGO4wtsvR1WDWvXqb+0bWYByNu85L/Rj9KWzxfh1mbtahG6odi8 bp7/+1cy55+d4XnX2/QHgkXdSCelBPtwH+aJUBp5av1N6t88+Dat8p3EyK30Cyp/ XfdglsfKWvmJX+hLBgR75ejy3cvr5iBIuExuULZNd8qrj+4dYDt4cYQB/MnttLt4 HZ1c/qSjMTDPdMBb4s3C844Pgk6QsKHJwLEl2zTN8HqNTMdwHBktyFPEzsRqV6Wn Kea6z4lFUwS17LCaq/bhCwvYcFJm2XSimtXWj1a50YdwEgAiT5o= =nuhe -----END PGP SIGNATURE-----
