rockchip: Add support for AFBC buffers
This adds support for allocating AFBC (ARM FrameBuffer Compression)
buffers with minigbm for Rockchip SoCs. AFBC buffers are allocated
through the new gbm_bo_create_with_modifiers() entry point. Callers are
responsible for determining which modifiers are valid for the intended
use case and pass in that list. gbm will then pick the optimal modifier
and allocate a buffer with that layout. The chosen modifier can be
queries through gbm_bo_get_format_modifier().
Callers of the new entry point are expected to forward the modifier when
using the buffer with other APIs (EGL, KMS etc). The old gbm_bo_create()
entry point continues to work as before and won't allocate AFBC buffers.
BUG=chrome-os-partner:56407
TEST=drm-tests null_platform_test with AFBC support
Change-Id: I1aa345b0d79c4545b7bfc17e9699ef6ad57c68e2
Reviewed-on: https://chromium-review.googlesource.com/386318
Commit-Ready: Kristian H. Kristensen <hoegsberg@chromium.org>
Tested-by: Kristian H. Kristensen <hoegsberg@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
diff --git a/gbm.h b/gbm.h
index 03c10ec..1fb338f 100644
--- a/gbm.h
+++ b/gbm.h
@@ -262,6 +262,12 @@
uint32_t width, uint32_t height,
uint32_t format, uint32_t flags);
+struct gbm_bo *
+gbm_bo_create_with_modifiers(struct gbm_device *gbm,
+ uint32_t width, uint32_t height,
+ uint32_t format,
+ const uint64_t *modifiers, uint32_t count);
+
#define GBM_BO_IMPORT_WL_BUFFER 0x5501
#define GBM_BO_IMPORT_EGL_IMAGE 0x5502
#define GBM_BO_IMPORT_FD 0x5503