On Thu, Apr 30, 2020 at 09:32:20AM +0100, Ben Davis wrote:

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

Acked-by: Liviu Dudau liviu.dudau@arm.com

Best regards, Liviu

---

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

-- 2.24.0