[igt-dev] [i-g-t 4/6] tests/kms_vrr: Fix bigjoiner constraint

[Bhanuprakash Modem <bhanuprakash.modem@intel.com>]

Before starting the subtest, we are checking the selected pipe/output
combo validity with default mode, but inside the subtest we are using
the mode with highest resolution.

Few panels exposing 4K as a default mode even though it supports 8K,
in this scenario test may misbehave due to the bigjoiner involvement.

Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@intel.com>
---
 tests/kms_vrr.c | 67 +++++++++++++++++++++++++++++++------------------
 1 file changed, 42 insertions(+), 25 deletions(-)

diff --git a/tests/kms_vrr.c b/tests/kms_vrr.c
index 09b97862e..363649294 100644
--- a/tests/kms_vrr.c
+++ b/tests/kms_vrr.c
@@ -230,37 +230,21 @@ static void set_vrr_on_pipe(data_t *data, enum pipe pipe, bool enabled)
 /* Prepare the display for testing on the given pipe. */
 static void prepare_test(data_t *data, igt_output_t *output, enum pipe pipe)
 {
-	drmModeModeInfo mode;
 	cairo_t *cr;
-
-	/* Reset output */
-	igt_display_reset(&data->display);
-	igt_output_set_pipe(output, pipe);
-
-	/* Capture VRR range */
-	data->range = get_vrr_range(data, output);
-
-	/* Override mode with max vrefresh.
-	 *   - vrr_min range should be less than the override mode vrefresh.
-	 *   - Limit the vrr_max range with the override mode vrefresh.
-	 */
-	mode = output_mode_with_maxrate(output, data->range.max);
-	igt_require(mode.vrefresh > data->range.min);
-	data->range.max = mode.vrefresh;
-	igt_output_override_mode(output, &mode);
+	drmModeModeInfo *mode = igt_output_get_mode(output);
 
 	/* Prepare resources */
-	igt_create_color_fb(data->drm_fd, mode.hdisplay, mode.vdisplay,
+	igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
 			    DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_LINEAR,
 			    0.50, 0.50, 0.50, &data->fb0);
 
-	igt_create_color_fb(data->drm_fd, mode.hdisplay, mode.vdisplay,
+	igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
 			    DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_LINEAR,
 			    0.50, 0.50, 0.50, &data->fb1);
 
 	cr = igt_get_cairo_ctx(data->drm_fd, &data->fb0);
 
-	igt_paint_color(cr, 0, 0, mode.hdisplay / 10, mode.vdisplay / 10,
+	igt_paint_color(cr, 0, 0, mode->hdisplay / 10, mode->vdisplay / 10,
 			1.00, 0.00, 0.00);
 
 	igt_put_cairo_ctx(cr);
@@ -483,7 +467,36 @@ static void test_cleanup(data_t *data, enum pipe pipe, igt_output_t *output)
 	igt_remove_fb(data->drm_fd, &data->fb0);
 }
 
-static bool config_constraint(igt_output_t *output, uint32_t flags)
+static bool output_constraint(data_t *data, igt_output_t *output)
+{
+	drmModeModeInfo mode;
+
+	/* Reset output */
+	igt_display_reset(&data->display);
+
+	/* Capture VRR range */
+	data->range = get_vrr_range(data, output);
+
+	/*
+	 * Override mode with max vrefresh.
+	 *   - vrr_min range should be less than the override mode vrefresh.
+	 *   - Limit the vrr_max range with the override mode vrefresh.
+	 */
+	mode = output_mode_with_maxrate(output, data->range.max);
+	if (mode.vrefresh < data->range.min)
+		return false;
+
+	data->range.max = mode.vrefresh;
+
+	igt_info("Override Mode: ");
+	kmstest_dump_mode(&mode);
+
+	igt_output_override_mode(output, &mode);
+
+	return true;
+}
+
+static bool config_constraint(data_t *data, igt_output_t *output, uint32_t flags)
 {
 	if (!has_vrr(output))
 		return false;
@@ -495,6 +508,9 @@ static bool config_constraint(igt_output_t *output, uint32_t flags)
 	if (!(flags & TEST_NEGATIVE) && !vrr_capable(output))
 		return false;
 
+	if (!output_constraint(data, output))
+		return false;
+
 	return true;
 }
 
@@ -507,16 +523,17 @@ run_vrr_test(data_t *data, test_t test, uint32_t flags)
 	for_each_connected_output(&data->display, output) {
 		enum pipe pipe;
 
-		if (!config_constraint(output, flags))
+		if (!config_constraint(data, output, flags))
 			continue;
 
 		for_each_pipe(&data->display, pipe) {
 			if (igt_pipe_connector_valid(pipe, output)) {
-				igt_display_reset(&data->display);
-
 				igt_output_set_pipe(output, pipe);
-				if (!intel_pipe_output_combo_valid(&data->display))
+
+				if (!intel_pipe_output_combo_valid(&data->display)) {
+					igt_output_set_pipe(output, PIPE_NONE);
 					continue;
+				}
 
 				igt_dynamic_f("pipe-%s-%s",
 					      kmstest_pipe_name(pipe), output->name)
-- 
2.40.0