On Tuesday 17 May 2016 08:03:45 Ben Gamari wrote: > Allen_Hung@xxxxxxxx writes: > > > Dell - Internal Use - Confidential > > Hi Ben, > > > > We have just confirmed the touchpad on Latitude E7470 is a PS/2 > > device, not an I2C-HID input device. The code you listed is common > > among many Dell products and the value of SDS0 should be provided > > somewhere (I can't find it out) to specify a PS/2 device. > > > Thanks Allen, > > I rather suspected this; I suppose it's probably hard to find I2C-HID > hardware that integrates a touchstick. This explains why SDS0 is 0 on my > hardware. > > In this case I suppose this is yet another Alps device? I've tried > bringing it up with all of the recent Alps protocols supported by the > alps.ko driver but sadly nothing seems to emit multitouch events, so > it seems likely that there is yet another protocol variant waiting to be > implemented. Is there any chance you could see whether Alps might now be > more willing to provide protocol documentation? If not, perhaps there's > a Linux binary driver available? > > Cheers, > > - Ben Hi Ben! Maybe it could help you, look at my email sent to linux-input ML year ago: http://thread.gmane.org/gmane.linux.kernel.input/41210 Also try to look at dell drivers page, there could be linux package for your laptop with drivers. Lot of them used to be in dkms format (upstream source code with dell changes). ALPS code from Dell were open source, it was just hard to find it and compile it on other then one kernel version. And harder to generate patch (like I did in above email)... If you need help with ALPS touchpad, I could try to help. -- Pali Rohár pali.rohar@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
