[PATCH i-g-t v2 3/3] tests/kms_feature_discovery: add hdcp capability discovery subtest

[Sowmiya S <sowmiya.s@intel.com>]

Add a "hdcp" subtest that reports whether at least one connected
output supports HDCP, using igt_hdcp_output_capable() from the
shared igt_hdcp library with IGT_HDCP_CONTENT_TYPE_0.

Signed-off-by: Sowmiya S <sowmiya.s@intel.com>
---
 tests/kms_feature_discovery.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/tests/kms_feature_discovery.c b/tests/kms_feature_discovery.c
index d18272b97..fdc48685f 100644
--- a/tests/kms_feature_discovery.c
+++ b/tests/kms_feature_discovery.c
@@ -36,6 +36,7 @@
 #ifdef HAVE_CHAMELIUM
 #include "igt_chamelium.h"
 #endif
+#include "igt_hdcp.h"
 #include "igt_hdr.h"
 #include "igt_kms.h"
 #include "igt_psr.h"
@@ -76,6 +77,10 @@
  * Description: Make sure that we have at least one DSC-capable sink.
  * Mega feature: VDSC
  *
+ * SUBTEST: hdcp
+ * Description: Make sure that we have at least one HDCP-capable output.
+ * Mega feature: HDCP
+ *
  * arg[1].values: 1, 2, 3, 4
  */
 
@@ -266,5 +271,26 @@ int igt_main() {
 				      "No DSC-capable sink found (checked %d outputs).\n",
 				      num_outputs);
 		}
+
+		igt_describe("Make sure that we have at least one HDCP-capable output.");
+		igt_subtest("hdcp") {
+			igt_output_t *output;
+			int num_outputs = 0;
+			bool found = false;
+
+			for_each_connected_output(&display, output) {
+				num_outputs++;
+				if (!igt_hdcp_output_capable(fd, output,
+							    IGT_HDCP_CONTENT_TYPE_0))
+					continue;
+
+				found = true;
+				break;
+			}
+
+			igt_require_f(found,
+				      "No HDCP-capable output found (checked %d outputs).\n",
+				      num_outputs);
+		}
 	}
 }
-- 
2.43.0