AFBC has a mode that guarantees use of AFBC with an uncompressed payloads, we add a new modifier to support this mode.
V2: updated modifier comment
Signed-off-by: Ben Davis ben.davis@arm.com --- include/uapi/drm/drm_fourcc.h | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 8bc0b31597d8..ec46c231af43 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -780,6 +780,18 @@ extern "C" { */ #define AFBC_FORMAT_MOD_BCH (1ULL << 11)
+/* AFBC uncompressed storage mode + * + * Indicates that the buffer is using AFBC uncompressed storage mode. + * In this mode all superblock payloads in the buffer use the uncompressed + * storage mode, which is usually only used for data which cannot be compressed. + * The buffer layout is the same as for AFBC buffers without USM set, this only + * affects the storage mode of the individual superblocks. Note that even a + * buffer without USM set may use uncompressed storage mode for some or all + * superblocks, USM just guarantees it for all. + */ +#define AFBC_FORMAT_MOD_USM (1ULL << 12) + /* * Arm 16x16 Block U-Interleaved modifier *