tools: Add intel_dp_compliance for DisplayPort 1.2 compliance automation

This is the userspace component of the Displayport Compliance
testing software required for compliance testing of the I915
Display Port driver. This must be running in order to successfully
complete Display Port compliance testing. This app and the kernel
code that accompanies it has been written to satify the requirements
of the Displayport Link CTS 1.2 rev1.1 specification from VESA.
Note that this application does not support eDP compliance testing.
This utility has an automation support for the Link training tests
(4.3.1.1. - 4.3.2.3), EDID tests (4.2.2.3
- 4.2.2.6) and Video Pattern generation tests (4.3.3.1) from CTS
specification 1.2 Rev 1.1.

This tool has the support for responding to the hotplug uevents
sent by compliance testting unit after each test.

The Linux DUT running this utility must be in text (console) mode
and cannot have any other display manager running. Since this uses
sysfs nodes for kernel interaction, this utility should be run as
Root. Once this user application is up and running, waiting for
test requests, the test appliance software on the windows host
can now be used to execute the compliance tests.

This app is based on some prior work done in April 2015 (by
Todd Previte <tprevite@gmail.com>)

v2:
* Add mode unset on hotplug uevent on disconnect (Manasi Navare)

v3:
Made capitalization consistent
Reduced line lengths
Added return value checks
Changed how GLib is linked
Fixed build warnings

v4:
* Conditionally build this tool if UDEV is present (Petri Latvala)
* igt_warn and info cleanup to remove \r
* Add intel_dp_compliance to tools/.gitignore
* Change the year in copyright statements to current (Petri Latvala)

Cc: Petri Latvala <petri.latvala@intel.com>
Cc: Marius Vlad <marius.c.vlad@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Petri Latvala <petri.latvala@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index 411bfabf..d2681400 100644
--- a/configure.ac
+++ b/configure.ac
@@ -164,6 +164,7 @@ PKG_CHECK_MODULES(XRANDR, xrandr >= 1.3, AC_DEFINE(HAVE_XRANDR, 1, [Have libXran
 # for testdisplay
 PKG_CHECK_MODULES(CAIRO, [cairo >= 1.12.0])
 PKG_CHECK_MODULES(LIBUDEV, [libudev], [udev=yes], [udev=no])
+AM_CONDITIONAL(HAVE_UDEV, [test "x$udev" = xyes])
 if test x"$udev" = xyes; then
 	AC_DEFINE(HAVE_UDEV,1,[Enable udev-based monitor hotplug detection])
 fi