[PATCH i-g-t 1/2] tests/kms_plane: Restructure planar-pixel-format-settings test and make it Intel only

[Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>]

Separate different planar pixel format tests onto their own dynamic subtests
to make it easier for debugging. All tests here are only testing Intel
hw related restrictions hence it make zero sense to run this on vkms or
other drivers. I added back the original limitation to make these Intel only.

Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
---
 tests/kms_plane.c | 322 ++++++++++++++++++++++++++--------------------
 1 file changed, 186 insertions(+), 136 deletions(-)

diff --git a/tests/kms_plane.c b/tests/kms_plane.c
index 7962c733a..6c08f1de8 100644
--- a/tests/kms_plane.c
+++ b/tests/kms_plane.c
@@ -41,8 +41,25 @@
 #include "xe/xe_query.h"
 
 /**
- * SUBTEST: planar-pixel-format-settings
- * Description: verify planar settings for pixel format are handled correctly
+ * SUBTEST: planar-pixel-format-settings@nv12-odd-width
+ * Description: Verify odd-width (257px) NV12 framebuffer is rejected by the
+ *              kernel on Intel hardware (display ver < 20 expects -EINVAL).
+ * Driver requirement: i915, xe
+ *
+ * SUBTEST: planar-pixel-format-settings@nv12-odd-height
+ * Description: Verify odd-height (257px) NV12 framebuffer is rejected by the
+ *              kernel on Intel hardware (display ver < 20 or >= 35 expects -EINVAL).
+ * Driver requirement: i915, xe
+ *
+ * SUBTEST: planar-pixel-format-settings@nv12-odd-horizontal-pan
+ * Description: Verify odd horizontal pan on NV12 framebuffer is rejected by
+ *              the kernel on Intel hardware (display ver < 35 expects -EINVAL).
+ * Driver requirement: i915, xe
+ *
+ * SUBTEST: planar-pixel-format-settings@p016-odd-vertical-pan
+ * Description: Verify odd vertical pan on P016 framebuffer and check CRC
+ *              matches a reference XRGB8888 blue fill on Intel hardware.
+ * Driver requirement: i915, xe
  *
  * SUBTEST: plane-position-%s
  * Description: Verify plane position using two planes to create a %arg[1]
@@ -1354,165 +1371,197 @@ test_pixel_formats(data_t *data, igt_crtc_t *crtc)
 	igt_remove_fb(data->drm_fd, &primary_fb);
 }
 
-static void test_planar_settings(data_t *data)
+static igt_plane_t *
+planar_test_setup(data_t *data, igt_crtc_t *crtc, igt_output_t *output)
 {
-	igt_display_t *display = &data->display;
-	igt_crtc_t *crtc;
-	igt_output_t *output;
-	igt_fb_t fb, fb_ref;
-	igt_plane_t *primary;
-	igt_crc_t crc, crc_ref;
-	int devid;
-	int display_ver = -1;
+	igt_display_reset(&data->display);
+	igt_output_set_crtc(output, crtc);
+	igt_display_commit_atomic(&data->display,
+				  DRM_MODE_ATOMIC_ALLOW_MODESET, NULL);
+	return igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
+}
+
+static void
+test_nv12_odd_width(data_t *data, igt_crtc_t *crtc, igt_output_t *output,
+		    int display_ver)
+{
+	igt_plane_t *primary = planar_test_setup(data, crtc, output);
+	igt_fb_t fb;
+	int expected_rval = display_ver >= 20 ? 0 : -EINVAL;
 	int rval;
-	bool is_vkms = false;
 
-	/*
-	 * If here is added non-intel tests below require will need to be
-	 * changed to if(..)
-	 */
-	igt_require_f(data->display.is_atomic, "Atomic mode-set not supported\n");
-	if (is_intel_device(data->drm_fd)) {
-		igt_require_intel(data->drm_fd);
-		devid = intel_get_drm_devid(data->drm_fd);
-		igt_require(intel_display_ver(devid) >= 9);
-		display_ver = intel_display_ver(devid);
-		igt_require(display_ver >= 9);
-	} else if (is_vkms_device(data->drm_fd)) {
-		is_vkms = true;
+	if (!igt_plane_has_format_mod(primary, DRM_FORMAT_NV12,
+				      DRM_FORMAT_MOD_LINEAR)) {
+		igt_debug("Odd width NV12 test skipped - format/mod not supported\n");
+		return;
 	}
 
-	crtc = igt_first_crtc_with_single_output(display, &output);
+	igt_create_fb(data->drm_fd, 257, 256,
+		      DRM_FORMAT_NV12, DRM_FORMAT_MOD_LINEAR, &fb);
+	igt_plane_set_fb(primary, &fb);
+	rval = igt_display_try_commit_atomic(&data->display,
+					     DRM_MODE_ATOMIC_ALLOW_MODESET |
+					     DRM_MODE_ATOMIC_TEST_ONLY,
+					     NULL);
+	igt_plane_set_fb(primary, NULL);
+	igt_remove_fb(data->drm_fd, &fb);
+	igt_assert_f(rval == expected_rval,
+		     "Odd width NV12 framebuffer: got %d, expected %d\n",
+		     rval, expected_rval);
+}
 
-	igt_output_set_crtc(output, crtc);
-	primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
+static void
+test_nv12_odd_height(data_t *data, igt_crtc_t *crtc, igt_output_t *output,
+		     int display_ver)
+{
+	igt_plane_t *primary = planar_test_setup(data, crtc, output);
+	igt_fb_t fb;
+	int expected_rval = (display_ver >= 20 && display_ver < 35) ? 0 : -EINVAL;
+	int rval;
 
-	igt_display_commit_atomic(&data->display,
-				  DRM_MODE_ATOMIC_ALLOW_MODESET,
-				  NULL);
-	/* test against intel_plane_check_src_coordinates() in i915 */
-	if (igt_plane_has_format_mod(primary, DRM_FORMAT_NV12,
-				     DRM_FORMAT_MOD_LINEAR)) {
-		int expected_rval = -EINVAL;
-
-		if (display_ver >= 20 || is_vkms)
-			expected_rval = 0;
-
-		igt_create_fb(data->drm_fd, 257, 256,
-			      DRM_FORMAT_NV12, DRM_FORMAT_MOD_LINEAR, &fb);
-		igt_plane_set_fb(primary, &fb);
-		rval = igt_display_try_commit_atomic(&data->display,
-						     DRM_MODE_ATOMIC_ALLOW_MODESET |
-						     DRM_MODE_ATOMIC_TEST_ONLY,
-						     NULL);
-		igt_remove_fb(data->drm_fd, &fb);
-		igt_assert_f(rval == expected_rval, "Odd width NV12 framebuffer\n");
-	} else {
-		igt_debug("Odd width NV12 framebuffer test skipped\n");
+	if (!igt_plane_has_format_mod(primary, DRM_FORMAT_NV12,
+				      DRM_FORMAT_MOD_LINEAR)) {
+		igt_debug("Odd height NV12 test skipped - format/mod not supported\n");
+		return;
+	}
+
+	igt_create_fb(data->drm_fd, 256, 257,
+		      DRM_FORMAT_NV12, DRM_FORMAT_MOD_LINEAR, &fb);
+	igt_plane_set_fb(primary, &fb);
+	rval = igt_display_try_commit_atomic(&data->display,
+					     DRM_MODE_ATOMIC_ALLOW_MODESET |
+					     DRM_MODE_ATOMIC_TEST_ONLY,
+					     NULL);
+	igt_plane_set_fb(primary, NULL);
+	igt_remove_fb(data->drm_fd, &fb);
+	igt_assert_f(rval == expected_rval,
+		     "Odd height NV12 framebuffer: got %d, expected %d\n",
+		     rval, expected_rval);
+}
+
+static void
+test_nv12_odd_horizontal_pan(data_t *data, igt_crtc_t *crtc,
+			     igt_output_t *output, int display_ver)
+{
+	igt_plane_t *primary = planar_test_setup(data, crtc, output);
+	igt_fb_t fb;
+	int expected_rval = display_ver >= 35 ? 0 : -EINVAL;
+	int rval;
+
+	if (!igt_plane_has_format_mod(primary, DRM_FORMAT_NV12,
+				      DRM_FORMAT_MOD_LINEAR)) {
+		igt_debug("Odd h-pan NV12 test skipped - format/mod not supported\n");
+		return;
 	}
 
-	/* test against intel_plane_check_src_coordinates() in i915 */
-	if (igt_plane_has_format_mod(primary, DRM_FORMAT_NV12,
-				     DRM_FORMAT_MOD_LINEAR)) {
-		int expected_rval = -EINVAL;
+	igt_create_fb(data->drm_fd, 810, 590,
+		      DRM_FORMAT_NV12, DRM_FORMAT_MOD_LINEAR, &fb);
+	igt_plane_set_fb(primary, &fb);
+	igt_plane_set_size(primary, 810, 590);
+	igt_plane_set_position(primary, -501, 200);
+	rval = igt_display_try_commit_atomic(&data->display,
+					     DRM_MODE_ATOMIC_ALLOW_MODESET |
+					     DRM_MODE_ATOMIC_TEST_ONLY,
+					     NULL);
+	igt_plane_set_fb(primary, NULL);
+	igt_remove_fb(data->drm_fd, &fb);
+	igt_assert_f(rval == expected_rval,
+		     "Odd horizontal pan NV12 framebuffer: got %d, expected %d\n",
+		     rval, expected_rval);
+}
 
-		if ((display_ver >= 20 && display_ver < 35) || is_vkms)
-			expected_rval = 0;
+static void
+test_p016_odd_vertical_pan(data_t *data, igt_crtc_t *crtc,
+			   igt_output_t *output, int display_ver)
+{
+	igt_plane_t *primary = planar_test_setup(data, crtc, output);
+	igt_fb_t fb, fb_ref;
+	igt_crc_t crc, crc_ref;
+	int expected_rval = (display_ver >= 20 && display_ver < 35) ? 0 : -EINVAL;
+	int rval;
 
-		igt_create_fb(data->drm_fd, 256, 257,
-			      DRM_FORMAT_NV12, DRM_FORMAT_MOD_LINEAR, &fb);
-		igt_plane_set_fb(primary, &fb);
-		rval = igt_display_try_commit_atomic(&data->display,
-						     DRM_MODE_ATOMIC_ALLOW_MODESET |
-						     DRM_MODE_ATOMIC_TEST_ONLY,
-						     NULL);
-		igt_remove_fb(data->drm_fd, &fb);
-		igt_assert_f(rval == expected_rval, "Odd height NV12 framebuffer\n");
-	} else {
-		igt_debug("Odd height NV12 framebuffer test skipped\n");
+	if (!igt_plane_has_format_mod(primary, DRM_FORMAT_P016,
+				      DRM_FORMAT_MOD_LINEAR)) {
+		igt_debug("Odd v-pan P016 test skipped - format/mod not supported\n");
+		return;
 	}
 
-	/* test against intel_plane_check_src_coordinates() in i915 */
-	if (igt_plane_has_format_mod(primary, DRM_FORMAT_NV12,
-				     DRM_FORMAT_MOD_LINEAR)) {
-		int expected_rval = -EINVAL;
+	igt_create_color_fb(data->drm_fd, 256, 260,
+			    DRM_FORMAT_P016, DRM_FORMAT_MOD_LINEAR,
+			    0.0, 0.0, 1.0, &fb);
 
-		if (display_ver >= 35 || is_vkms)
-			expected_rval = 0;
+	igt_plane_set_fb(primary, &fb);
+	igt_plane_set_position(primary, 1, 1);
+	igt_plane_set_size(primary, 256, 256);
+	igt_fb_set_position(&fb, primary, 0, 3);
+	igt_fb_set_size(&fb, primary, 256, 256);
+
+	rval = igt_display_try_commit_atomic(&data->display,
+					     DRM_MODE_ATOMIC_ALLOW_MODESET,
+					     NULL);
+	if (rval == 0) {
+		set_legacy_lut(data, crtc, LUT_MASK);
+		igt_wait_for_vblank_count(crtc, 1);
+
+		data->pipe_crc = igt_crtc_crc_new(crtc,
+						  IGT_PIPE_CRC_SOURCE_AUTO);
+		igt_pipe_crc_collect_crc(data->pipe_crc, &crc);
+
+		/* reference: plain blue XRGB8888 of the same visible size */
+		igt_create_color_fb(data->drm_fd, 256, 256,
+				    DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_LINEAR,
+				    0.0, 0.0, 1.0, &fb_ref);
+		igt_plane_set_fb(primary, &fb_ref);
+		rval = igt_display_try_commit_atomic(&data->display,
+						     DRM_MODE_ATOMIC_ALLOW_MODESET,
+						     NULL);
 
-		igt_create_fb(data->drm_fd, 810, 590,
-			      DRM_FORMAT_NV12, DRM_FORMAT_MOD_LINEAR, &fb);
-		igt_plane_set_fb(primary, &fb);
-		igt_plane_set_size(primary, 810, 590);
-		igt_plane_set_position(primary, -501, 200);
-		rval = igt_display_try_commit_atomic(&data->display, DRM_MODE_ATOMIC_ALLOW_MODESET |
-						     DRM_MODE_ATOMIC_TEST_ONLY, NULL);
+		igt_pipe_crc_collect_crc(data->pipe_crc, &crc_ref);
+		set_legacy_lut(data, crtc, 0xffff);
+		igt_pipe_crc_free(data->pipe_crc);
+		data->pipe_crc = NULL;
 
-		igt_remove_fb(data->drm_fd, &fb);
-		igt_assert_f(rval == expected_rval, "Odd horizontal pan NV12 framebuffer\n");
+		igt_plane_set_fb(primary, NULL);
+		igt_remove_fb(data->drm_fd, &fb_ref);
+		igt_assert_crc_equal(&crc_ref, &crc);
 	} else {
-		igt_debug("Odd horizontal pan NV12 framebuffer test skipped\n");
+		igt_plane_set_fb(primary, NULL);
 	}
 
-	if (igt_plane_has_format_mod(primary, DRM_FORMAT_P016,
-					    DRM_FORMAT_MOD_LINEAR)) {
-		int expected_rval = -EINVAL;
+	igt_remove_fb(data->drm_fd, &fb);
+	igt_assert_f(rval == expected_rval,
+		     "Odd vertical pan P016 framebuffer: got %d, expected %d\n",
+		     rval, expected_rval);
+}
 
-		if ((display_ver >= 20 && display_ver < 35) || is_vkms)
-			expected_rval = 0;
+static void test_planar_settings(data_t *data)
+{
+	igt_display_t *display = &data->display;
+	igt_crtc_t *crtc;
+	igt_output_t *output;
+	int display_ver;
 
-		igt_create_color_fb(data->drm_fd, 256, 260,
-			      DRM_FORMAT_P016, DRM_FORMAT_MOD_LINEAR,
-			      0.0, 0.0, 1.0,
-			      &fb);
+	igt_require(display->is_atomic);
 
-		igt_plane_set_fb(primary, &fb);
-		igt_plane_set_position(primary, 1, 1);
-		igt_plane_set_size(primary, 256, 256);
+	/* All sub-tests below are Intel-specific. */
+	igt_require_intel(data->drm_fd);
+	display_ver = intel_display_ver(intel_get_drm_devid(data->drm_fd));
+	igt_require(display_ver >= 9);
 
-		/* set odd v pan and check with crc fb didn't break */
-		igt_fb_set_position(&fb, primary, 0, 3);
-		igt_fb_set_size(&fb, primary, 256, 256);
-		rval = igt_display_try_commit_atomic(&data->display,
-						     DRM_MODE_ATOMIC_ALLOW_MODESET,
-						     NULL);
-		if (rval == 0) {
-			set_legacy_lut(data,
-				       crtc,
-				       LUT_MASK);
-			igt_wait_for_vblank_count(crtc,
-						  1);
-			data->pipe_crc = igt_crtc_crc_new(crtc,
-							  IGT_PIPE_CRC_SOURCE_AUTO);
-			igt_pipe_crc_collect_crc(data->pipe_crc, &crc);
-
-			igt_create_color_fb(data->drm_fd, 256, 256,
-				DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_LINEAR,
-				0.0, 0.0, 1.0,
-				&fb_ref);
-
-			igt_plane_set_fb(primary, &fb_ref);
-			rval = igt_display_try_commit_atomic(&data->display,
-						     DRM_MODE_ATOMIC_ALLOW_MODESET,
-						     NULL);
+	crtc = igt_first_crtc_with_single_output(display, &output);
+	igt_require_f(crtc, "No suitable output/crtc pair found\n");
 
-			igt_pipe_crc_collect_crc(data->pipe_crc, &crc_ref);
-			set_legacy_lut(data,
-				       crtc,
-				       0xffff);
+	igt_dynamic("nv12-odd-width")
+		test_nv12_odd_width(data, crtc, output, display_ver);
 
-			igt_pipe_crc_free(data->pipe_crc);
-			data->pipe_crc = NULL;
+	igt_dynamic("nv12-odd-height")
+		test_nv12_odd_height(data, crtc, output, display_ver);
 
-			igt_remove_fb(data->drm_fd, &fb_ref);
-			igt_assert_crc_equal(&crc_ref, &crc);
-		}
+	igt_dynamic("nv12-odd-horizontal-pan")
+		test_nv12_odd_horizontal_pan(data, crtc, output, display_ver);
 
-		igt_remove_fb(data->drm_fd, &fb);
-		igt_assert_f(rval == expected_rval, "Odd vertical pan P016 framebuffer\n");
-	} else {
-		igt_debug("Odd vertical pan P016 framebuffer test skipped\n");
-	}
+	igt_dynamic("p016-odd-vertical-pan")
+		test_p016_odd_vertical_pan(data, crtc, output, display_ver);
 }
 
 static bool is_pipe_limit_reached(int count)
@@ -1621,8 +1670,9 @@ run_tests_for_pipe_plane(data_t *data)
 		run_test(data, dynamic_test_handler);
 	}
 
-	igt_describe("verify planar settings for pixel format are accepted or rejected correctly");
-	igt_subtest_f("planar-pixel-format-settings")
+	igt_describe("verify planar pixel format settings are accepted or rejected correctly"
+		     " on Intel hardware");
+	igt_subtest_with_dynamic_f("planar-pixel-format-settings")
 		test_planar_settings(data);
 }
 
-- 
2.43.0