Chromebook touchpads & touchscreen

[Scot Doyle]

On Tue, 6 Jan 2015, Chris J Arges wrote:
> 
> On 01/05/2015 01:15 PM, Scot Doyle wrote:
> > Would it be possible to have the mainline patches enabling four Chromebook 
> > touchpads and one touchscreen added to 3.16? The last four depend on the 
> > first and they apply to drivers/platform/chrome/chromeos_laptop.c
> > 
> > da3b0ab75aadab63d1ffd5563100c9386e444dad  Acer C720
> > 5ea9567f6126846f5dcfa8515d7ef2c238133c0d  HP Chromebook 14
> > 0e1e5e590a457063c94d55c219b349bcf0d1f93a  Dell Chromebook 11
> > 963cb6fa0f5f115986e970b9d97440e4906524fa  Toshiba CB35
> > b90b3c4ae06af135e279c9a5aa1c640d22787fc4  Acer C720P
> > 
> 
> Scot,
> Yes this can be added to a stable release since it falls under hardware
> enablement. It would be very helpful for you to open a bug and follow
> our Stable Release Update procedure to make this easier to track:
> https://wiki.ubuntu.com/KernelTeam/KernelUpdates
> 
> Once the bug is filed, please either send a new email or reply to this
> one with that and the SRU justification.
> 
> Off the top of my head, are there any DTS files that need to be patched,
> or any other support needed? In addition do you have a method of
> verifying these particular patches once they are applied?
> 
> Thanks,
> --chris j arges

Chris, thanks for the guidance.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1408105

The only other possible change would be ensuring CONFIG_CHROMEOS_LAPTOP=m. 
Yes, I could test by recompiling the kernel. Which tree and branch?

-------
SRU Justification:
Impact: The Haswell-based Chromebooks have touchpads and a touchscreen 
unsupported in the 3.16 kernels
Fix: Upstream in 3.17
Testcase: I've tested fixes by compiling and using upstream 3.17+