[igt-dev] [PATCH] tests/intel/kms_flip_scaled_crc: Add support for FP16 compressed formats

[Melanie Lobo]

MTL supports FP16 format which is a binary floating-point computer
number format that occupies 16 bits in computer memory. In this test
platform shall render compression in display engine to receive
FP16 compressed formats.

This IGT test was tested with kernel patch,
https://patchwork.freedesktop.org/patch/563854

Test-with: 20231012062620.23886-1-melanie.lobo at intel.com

cc: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
cc: Bhanuprakash Modem <bhanuprakash.modem at intel.com>
cc: Swati Sharma <swati2.sharma at intel.com>
Signed-off-by: Melanie Lobo <melanie.lobo at intel.com>
---
 lib/intel_aux_pgtable.c           |  5 +++++
 tests/intel/kms_flip_scaled_crc.c | 24 ++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/lib/intel_aux_pgtable.c b/lib/intel_aux_pgtable.c
index 7c79521344de..a612df407692 100644
--- a/lib/intel_aux_pgtable.c
+++ b/lib/intel_aux_pgtable.c
@@ -21,6 +21,7 @@
 #define AUX_FORMAT_AYUV		0x09
 #define AUX_FORMAT_ARGB_8B	0x0A
 #define AUX_FORMAT_NV12_21	0x0F
+#define AUX_FORMAT_XRGB16161616_64B 0x10
 
 struct pgtable_level_desc {
 	int idx_shift;
@@ -305,6 +306,10 @@ static uint64_t pgt_get_l1_flags(const struct intel_buf *buf, int surface_idx)
 			entry.e.format = AUX_FORMAT_ARGB_8B;
 			entry.e.depth = bpp_to_depth_val(32);
 			break;
+		case 64:
+			entry.e.format = AUX_FORMAT_XRGB16161616_64B;
+			entry.e.depth = bpp_to_depth_val(64);
+			break;
 		default:
 			igt_assert(0);
 		}
diff --git a/tests/intel/kms_flip_scaled_crc.c b/tests/intel/kms_flip_scaled_crc.c
index 2997b63fac40..6874f747b280 100644
--- a/tests/intel/kms_flip_scaled_crc.c
+++ b/tests/intel/kms_flip_scaled_crc.c
@@ -142,6 +142,14 @@
  * Mega feature: General Display Features
  * Test category: functionality test
  *
+ * SUBTEST: flip-64bpp-4tile-to-32bpp-4tilemtlrcccs-%s
+ * Description: Flip from 64bpp non scaled fb to 32bpp %arg[1] fb to stress CD
+ *              clock programming
+ * Driver requirement: i915, xe
+ * Functionality: ccs, scaling, tiling, vblank
+ * Mega feature: General Display Features
+ * Test category: functionality test
+ *
  * arg[1]:
  *
  * @downscaling:        Downscaled
@@ -406,6 +414,14 @@ const struct {
 		1.0,
 		2.0,
 	},
+	{
+		"flip-64bpp-4tile-to-32bpp-4tilemtlrcccs-downscaling",
+		"Flip from 64bpp non scaled fb to 32bpp downscaled fb to stress CD clock programming",
+		I915_FORMAT_MOD_4_TILED, DRM_FORMAT_XRGB16161616F,
+		I915_FORMAT_MOD_4_TILED_MTL_RC_CCS, DRM_FORMAT_XRGB16161616F,
+		1.0,
+		2.0,
+	},
 	{
 		"flip-32bpp-ytile-to-64bpp-ytile-upscaling",
 		"Flip from 32bpp non scaled fb to 64bpp upscaled fb to stress CD clock programming",
@@ -590,6 +606,14 @@ const struct {
 		0.5,
 		1.0,
 	},
+	{
+		"flip-64bpp-4tile-to-32bpp-4tilemtlrcccs-upscaling",
+		"Flip from 64bpp non scaled fb to 32bpp upscaled fb to stress CD clock programming",
+		I915_FORMAT_MOD_4_TILED, DRM_FORMAT_XRGB16161616F,
+		I915_FORMAT_MOD_4_TILED_MTL_RC_CCS, DRM_FORMAT_XRGB16161616F,
+		0.5,
+		1.0,
+	},
 };
 
 static void setup_fb(data_t *data, struct igt_fb *newfb, uint32_t width,
-- 
2.17.1