[igt-dev] [PATCH i-g-t v3 12/21] lib/igt_vc4: Add helper for checking SAND tiling support on plane

[Paul Kocialkowski]

This introduces a convenience helper for checking whether a plane
supports SAND tiling for a given format.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski at bootlin.com>
---
 lib/igt_vc4.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/lib/igt_vc4.h b/lib/igt_vc4.h
index 9118ae193f60..cb980541a61f 100644
--- a/lib/igt_vc4.h
+++ b/lib/igt_vc4.h
@@ -33,6 +33,30 @@ static inline bool igt_vc4_plane_supports_t_tiling(igt_plane_t *plane,
 					DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED);
 }
 
+static inline bool igt_vc4_plane_supports_sand_tiling(igt_plane_t *plane,
+						      uint32_t format,
+						      size_t column_width_bytes)
+{
+	uint64_t modifier;
+
+	switch (column_width_bytes) {
+	case 32:
+		modifier = DRM_FORMAT_MOD_BROADCOM_SAND32;
+		break;
+	case 64:
+		modifier = DRM_FORMAT_MOD_BROADCOM_SAND64;
+		break;
+	case 128:
+		modifier = DRM_FORMAT_MOD_BROADCOM_SAND128;
+		break;
+	case 256:
+		modifier = DRM_FORMAT_MOD_BROADCOM_SAND256;
+		break;
+	}
+
+	return igt_plane_has_format_mod(plane, format, modifier);
+}
+
 uint32_t igt_vc4_get_cleared_bo(int fd, size_t size, uint32_t clearval);
 int igt_vc4_create_bo(int fd, size_t size);
 void *igt_vc4_mmap_bo(int fd, uint32_t handle, uint32_t size, unsigned prot);
-- 
2.20.1