From: Chad Versace <chadvers...@chromium.org>
---
src/intel/isl/isl.c | 35 +++++++++++++++++++++++++++++++++++
src/intel/isl/isl.h | 15 +++++++++++++++
2 files changed, 50 insertions(+)
diff --git a/src/intel/isl/isl.c b/src/intel/isl/isl.c
index 8ebe8538fa..5e911e4f4d 100644
--- a/src/intel/isl/isl.c
+++ b/src/intel/isl/isl.c
@@ -2378,3 +2378,38 @@ isl_surf_get_depth_format(const struct isl_device *dev,
return 5; /* D16_UNORM */
}
}
+
+bool
+isl_surf_get_drm_format_mod(const struct isl_surf *main_surf,
+ enum isl_aux_usage aux,
+ uint64_t *mod)
+{
+ if (aux != ISL_AUX_USAGE_NONE) {
+ /* There are no modifiers defined yet for auxiliary surfaces, not even
+ * for CCS.
+ */
+ return false;
+ }
+
+ switch (main_surf->tiling) {
+ case ISL_TILING_LINEAR:
+ *mod = DRM_FORMAT_MOD_LINEAR;
+ break;
+ case ISL_TILING_X:
+ *mod = I915_FORMAT_MOD_X_TILED;
+ break;
+ case ISL_TILING_Y0:
+ *mod = I915_FORMAT_MOD_Y_TILED;
+ break;
+ case ISL_TILING_Yf:
+ *mod = I915_FORMAT_MOD_Yf_TILED;
+ break;
+ case ISL_TILING_Ys:
+ case ISL_TILING_W:
+ case ISL_TILING_HIZ:
+ case ISL_TILING_CCS:
+ return false;
+ }
+
+ return true;
+}
diff --git a/src/intel/isl/isl.h b/src/intel/isl/isl.h
index d216b05168..c0e0ac8572 100644
--- a/src/intel/isl/isl.h
+++ b/src/intel/isl/isl.h
@@ -1957,6 +1957,21 @@ uint32_t
isl_surf_get_depth_format(const struct isl_device *dev,
const struct isl_surf *surf);
+/**
+ * The given surface must be a primary surface, not an auxiliary surface;
+ * otherwise behavior is undefined.
+ *
+ * The auxiliary usage must be compatible with the given surface; otherwise
+ * behavior is undefined.
+ *
+ * If no known DRM format modifier applies to the input, then return false.
+ * The output parameter is written only on success.
+ */
+bool ATTRIBUTE_PURE
+isl_surf_get_drm_format_mod(const struct isl_surf *main_surf,
+ enum isl_aux_usage aux,
+ uint64_t *mod);
+
#ifdef __cplusplus
}
#endif
--
2.13.0
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