wmt: Driver for generic MS Windows 7/8/10 - compatible USB HID multi-touch devices

[wulf]

Summary

Add support for generic MS Windows 7/8/10 - compatible USB HID multi-touch touchscreens via evdev protocol.
Intended to be a native replacement of hid-miltitouch.c driver found in Linux distributions and multimedia/webcamd port.

To compile this driver into the kernel, place the following lines into your kernel configuration file:

device wmt
device usb
device evdev

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

wmt_load="YES"

To get multi-touch device working in X, one should install ports/x11-drivers/xf86-input-evdev and properly configure it.

Currently, driver does not support pens or touchpads.

Note: wmt.ko should be kld-loaded before uhid driver to take precedence over it! Otherwise uhid can be kld-unloaded after loading of wmt.

Test Plan

Tested with ELAN (0x04f3:0x0012) and VirtualBox touchscreens

[wulf]

CFT has been announced on current@

[bcr]

OK from manpages, but you need to bump the .Dd to the date when you commit this. Thanks!

[• hselasky]

sys/dev/usb/input/wmt.c

516 ↗

(On Diff #32015)

One variable per line.

519 ↗

(On Diff #32015)

extra spacing here before report_id;

sys/dev/usb/usb_hid.c

862 ↗

(On Diff #32015)

Try to write like this:

scale[16][2] = {

....

[0] = { ... },
[1] = { ... },
[2] = { ... },

sys/modules/usb/wmt/Makefile

3 ↗

(On Diff #32015)

Should you use ${SRCTOP} here ? Check other Makefiles in sys/modules/usb .

[wulf]

Make code style more consistent with other usb drivers and style(9) manpage.
No functional changes.

[koobs]

CFT on Twitter via @FreeBSDHelp (hope it helps)

[wulf]

CFT on Twitter via @FreeBSDHelp (hope it helps)

Thank you!

[gonzo]

Looks good to me