Bug 4770

Summary:	Enable USB touchscreens
Product:	[Build System, Metadata & Runtime] BSPs	Reporter:	Ross Burton <ross.burton>
Component:	bsps-meta-intel	Assignee:	Tom Zanussi <tom.zanussi>
Status:	VERIFIED FIXED	QA Contact:
Severity:	enhancement
Priority:	Medium	CC:	corneliux.stoicescu, tom.zanussi
Version:	1.5
Target Milestone:	1.5 M2
Hardware:	x86
OS:	Multiple
Whiteboard:
OS type for building Yocto:	---	Type of Regression:	---
Verified:		Documentation change:	No (bug/feature does not impact docs)

Description Ross Burton 2013-06-24 16:01:14 UTC

My NUC is hooked up to a USB touchscreen, but the kernel doesn't have drivers for this hardware.

For the generic USB touchscreen driver, I needed this options:
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_USB_COMPOSITE=y

(iirc, C_I_T is a group, USB_COMPOSITE is the driver itself)

Can these please be added to the meta-intel BSPs?  I guess setting the driver as a module not builtin makes sense.

Comment 1 Ross Burton 2013-06-24 16:01:52 UTC

For what it's worth, this effectively blocks #4416.

Comment 2 Tom Zanussi 2013-06-24 16:30:07 UTC

OK, I can add a couple new kernel features:

features/input/touchscreen
features/usb/touchscreen-composite

features/usb/touchscreen-composite would 'include features/input/touchscreen' and all you'd need to do would be to include features/usb/touchscreen-composite in your bsp config i.e.

include features/input/touchscreen-composite

I can create those features, add them to the nuc bsp kernel metadata and build-test to make sure they make it into the final config, but can't run-test since I don't have touchscreen hardware to test with.

Let me know if that sounds ok and I'll get started on it..

Comment 3 Ross Burton 2013-06-24 16:55:34 UTC

Sounds good.  As it's not NUC-specific, could we add it to all of the non-server BSPs?

Comment 4 Tom Zanussi 2013-06-24 17:21:09 UTC

Yeah, I guess if the idea is to be able to plug the USB touchscreen into any meta-intel BSP and just have it work, it would make sense to add it to them all.  Adding it to common-pc, common-pc-64 and the individual atom BSPs like crownbay/fri2/emenlow/sys940x that don't inherit from those should cover everything.  I won't touch the minnow unless Darren wants me to.

Comment 5 Darren Hart 2013-06-24 18:34:37 UTC

Agreed with Tom's approach. Tom, please feel free to add it to the minnow BSP as well.

Comment 6 Tom Zanussi 2013-07-24 16:13:10 UTC

Features added to linux-yocto-3.8 and BSPs updated:

http://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto-3.8/commit/?h=meta&id=a814ee5010c5dbb016e1c8e47f6a8476b0f11028

Comment 7 Stoicescu Cornel 2013-10-03 14:47:39 UTC

Ross, can you please Verify this? We doj't have an USB touchscreen to test this.

Comment 8 Ross Burton 2013-10-03 15:08:10 UTC

Verified on my NUC with a HDMI touchscreen.