intel/isl: Add i915 to isl_tiling converter

v2: s/i915_tiling_to_isl_tiling(/isl_tiling_from_i915_tiling/

Reviewed-by: Daniel Stone <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
Signed-off-by: Topi Pohjolainen <[email protected]>

2 files changed, 20 insertions, 0 deletions

diff --git a/src/intel/isl/isl.h b/src/intel/isl/isl.h
index d81df31a372..92d2ffc31a5 100644
--- a/src/intel/isl/isl.h
+++ b/src/intel/isl/isl.h
@@ -1516,6 +1516,9 @@ isl_tiling_is_std_y(enum isl_tiling tiling)
 uint32_t
 isl_tiling_to_i915_tiling(enum isl_tiling tiling);
 
+enum isl_tiling 
+isl_tiling_from_i915_tiling(uint32_t tiling);
+
 const struct isl_drm_modifier_info * ATTRIBUTE_CONST
 isl_drm_modifier_get_info(uint64_t modifier);
 
diff --git a/src/intel/isl/isl_drm.c b/src/intel/isl/isl_drm.c
index b7a4997d2d0..ef80e42fdf7 100644
--- a/src/intel/isl/isl_drm.c
+++ b/src/intel/isl/isl_drm.c
@@ -54,6 +54,23 @@ isl_tiling_to_i915_tiling(enum isl_tiling tiling)
    unreachable("Invalid ISL tiling");
 }
 
+enum isl_tiling
+isl_tiling_from_i915_tiling(uint32_t tiling)
+{
+   switch (tiling) {
+   case I915_TILING_NONE:
+      return ISL_TILING_LINEAR;
+
+   case I915_TILING_X:
+      return ISL_TILING_X;
+
+   case I915_TILING_Y:
+      return ISL_TILING_Y0;
+   }
+
+   unreachable("Invalid i915 tiling");
+}
+
 struct isl_drm_modifier_info modifier_info[] = {
    {
       .modifier = DRM_FORMAT_MOD_NONE,