Re: psm(4) support for Elantech touchpads
Malcolm Matalka <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.mobile |
|---|---|
| Message-ID | <[email protected]> |
Vladimir Kondratyev <[email protected]> writes: > On 2016-07-04 00:15, Vladimir Kondratyev wrote: >> On 2016-07-03 21:50, Matthias Apitz wrote: >>> Hello Vladimir, >>> >>> I own an Acer C720 (aka Chromebook) which worked fine concerning the >>> touchpad with the cyapa driver in CURRENT. After a repair in Acer.com >>> they said that they have had to change the keyboard and the touchpad and >>> it now does not attach anymore to the cyapa.ko; it seems that it was >>> replace by an Elan TP and while googlöing for support I found your >>> posting from September 2015. I have applied the patch to r292778 but the >>> code is not walked through because it says on verbose boot: >>> >>> atkbd0: [GIANT-LOCKED] >>> random: harvesting attach, 8 bytes (4 bits) from atkbd0 >>> psm0: unable to allocate IRQ >>> >>> Any ideas about this? Thanks in advance >>> >>> matthias >> >> Hi, Matthias >> >> I`m afraid that device resource management is not what I`m familiar with. Sorry. >> Mouse type detection starts 200 lines below IRQ initialization so this >> message should not depend on my patch. >> Quick googling shows that this is most probably an ACPI issue but that >> all I was able to find >> >> WBR, Vladimir Kondratyev >> > > After some investigations its turned out that some modern ElanTPs use I2C interface not PS/2 > so they can not be handled with my patch. Its necessary to port new driver from Linux > https://lwn.net/Articles/496137/ or from OpenBSD where it has name > imt(4) I'd like to try to port this driver over to FreeBSD, does anyone have any suggestions of something to read or willing to help mentor me in that? I know nothing about doing this but would really like to get my Trackpad working! > > _______________________________________________ > [email protected] mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-mobile > To unsubscribe, send any mail to "[email protected]" _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-mobile To unsubscribe, send any mail to "[email protected]"