[i-g-t 15/51] tests/kms_display_modes: Add support for Bigjoiner

[Bhanuprakash Modem]

As many 2x tests are currently running on Pipe-A & B only, those
tests will always SKIP with the above config (8K + ). Instead of
Skipping the test, we need to add some intelligence to identify
the valid combo to execute the test.

Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem at intel.com>
---
 tests/kms_display_modes.c | 104 +++++++++++++++++++++++---------------
 1 file changed, 62 insertions(+), 42 deletions(-)

diff --git a/tests/kms_display_modes.c b/tests/kms_display_modes.c
index eff30cbb..816efcf8 100644
--- a/tests/kms_display_modes.c
+++ b/tests/kms_display_modes.c
@@ -34,31 +34,26 @@ typedef struct {
 	int n_pipes;
 } data_t;
 
-static void run_extendedmode_basic(data_t *data, int pipe1, int pipe2)
+static void run_extendedmode_basic(data_t *data,
+				   enum pipe pipe1, igt_output_t *output1,
+				   enum pipe pipe2, igt_output_t *output2)
 {
 	struct igt_fb fb, fbs[2];
 	drmModeModeInfo *mode[2];
-	igt_output_t *output, *extended_output[2];
 	igt_display_t *display = &data->display;
 	igt_plane_t *plane[2];
 	igt_pipe_crc_t *pipe_crc[2] = { 0 };
 	igt_crc_t ref_crc[2], crc[2];
-	int count = 0, width, height;
+	int width, height;
 	cairo_t *cr;
 
-	for_each_connected_output(display, output) {
-		extended_output[count] = output;
-		count++;
+	igt_display_reset(display);
 
-		if (count > 1)
-			break;
-	}
-
-	igt_output_set_pipe(extended_output[0], pipe1);
-	igt_output_set_pipe(extended_output[1], pipe2);
+	igt_output_set_pipe(output1, pipe1);
+	igt_output_set_pipe(output2, pipe2);
 
-	mode[0] = igt_output_get_mode(extended_output[0]);
-	mode[1] = igt_output_get_mode(extended_output[1]);
+	mode[0] = igt_output_get_mode(output1);
+	mode[1] = igt_output_get_mode(output2);
 
 	pipe_crc[0] = igt_pipe_crc_new(data->drm_fd, pipe1, INTEL_PIPE_CRC_SOURCE_AUTO);
 	pipe_crc[1] = igt_pipe_crc_new(data->drm_fd, pipe2, INTEL_PIPE_CRC_SOURCE_AUTO);
@@ -115,8 +110,8 @@ static void run_extendedmode_basic(data_t *data, int pipe1, int pipe2)
 	igt_pipe_crc_free(pipe_crc[0]);
 	igt_pipe_crc_free(pipe_crc[1]);
 
-	igt_output_set_pipe(extended_output[0], PIPE_NONE);
-	igt_output_set_pipe(extended_output[1], PIPE_NONE);
+	igt_output_set_pipe(output1, PIPE_NONE);
+	igt_output_set_pipe(output2, PIPE_NONE);
 
 	igt_plane_set_fb(igt_pipe_get_plane_type(&display->pipes[pipe1],
 			  DRM_PLANE_TYPE_PRIMARY), NULL);
@@ -129,43 +124,68 @@ static void run_extendedmode_basic(data_t *data, int pipe1, int pipe2)
 	igt_assert_crc_equal(&crc[1], &ref_crc[1]);
 }
 
+#define for_each_connected_output_local(display, output)		\
+	for (int j__ = 0;  assert(igt_can_fail()), j__ < (display)->n_outputs; j__++)	\
+		for_each_if ((((output) = &(display)->outputs[j__]), \
+			      igt_output_is_connected((output))))
+
+#define for_each_valid_output_on_pipe_local(display, pipe, output) \
+	for_each_connected_output_local((display), (output)) \
+		for_each_if (igt_pipe_connector_valid((pipe), (output)))
+
+static void run_extendedmode_test(data_t *data) {
+	enum pipe pipe1, pipe2;
+	igt_output_t *output1, *output2;
+	igt_display_t *display = &data->display;
+
+	igt_display_reset(display);
+
+	for_each_pipe(display, pipe1) {
+		for_each_valid_output_on_pipe(display, pipe1, output1) {
+			for_each_pipe(display, pipe2) {
+				if (pipe1 == pipe2)
+					continue;
+
+				for_each_valid_output_on_pipe_local(display, pipe2, output2) {
+					if (output1 == output2)
+						continue;
+
+					igt_display_reset(display);
+
+					igt_output_set_pipe(output1, pipe1);
+					igt_output_set_pipe(output2, pipe2);
+
+					if (!igt_test_constraint(display))
+						continue;
+
+					igt_dynamic_f("pipe-%s-%s-pipe-%s-%s",
+						      kmstest_pipe_name(pipe1),
+						      igt_output_name(output1),
+						      kmstest_pipe_name(pipe2),
+						      igt_output_name(output2))
+						run_extendedmode_basic(data,
+								pipe1, output1,
+								pipe2, output2);
+				}
+			}
+		}
+	}
+}
+
 igt_main
 {
 	data_t data;
-	int valid_output = 0, i, j = 0;
-	igt_output_t *output;
-	int pipe[IGT_MAX_PIPES];
 
 	igt_fixture {
 		data.drm_fd = drm_open_driver_master(DRIVER_ANY);
 		kmstest_set_vt_graphics_mode();
 		igt_display_require(&data.display, data.drm_fd);
-
-		for_each_connected_output(&data.display, output) {
-			valid_output++;
-
-			if (valid_output > 1)
-				break;
-		}
-
-		data.n_pipes = 0;
-		for_each_pipe(&data.display, i) {
-			data.n_pipes++;
-			pipe[j] = i;
-			j++;
-		}
-
-		igt_require_f(valid_output > 1, "No valid second output found\n");
+		igt_display_require_output(&data.display);
 	}
 
 	igt_describe("Test for validating display extended mode with a pair of connected displays");
-	igt_subtest_with_dynamic("extended-mode-basic") {
-		for (i = 0; i < data.n_pipes - 1; i++) {
-			igt_dynamic_f("pipe-%s%s", kmstest_pipe_name(pipe[i]),
-					kmstest_pipe_name(pipe[i+1]));
-			run_extendedmode_basic(&data, pipe[i], pipe[i+1]);
-		}
-	}
+	igt_subtest_with_dynamic("extended-mode-basic")
+		run_extendedmode_test(&data);
 
 	igt_fixture {
 		igt_display_fini(&data.display);
-- 
2.35.1