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, 35 insertions, 0 deletions

diff --git a/tools/intel_dp_compliance.h b/tools/intel_dp_compliance.h
new file mode 100644
index 00000000..50a9662e
--- /dev/null
+++ b/tools/intel_dp_compliance.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2017 Intel Corporation
+ * Manasi Navare <manasi.d.navare@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <glib.h>
+
+extern int drm_fd;
+
+gboolean intel_dp_compliance_setup_hotplug(void);
+void intel_dp_compliance_cleanup_hotplug(void);
+
+/* called by the hotplug code */
+int update_display(int mode, bool is_compliance_test);