From: Ben Davis Date: Thu, 30 Apr 2020 08:32:20 +0000 (+0100) Subject: drm: drm_fourcc: Add uncompressed AFBC modifier X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=79ce058032c391b12af928b1e30abf92482a270f;p=linux.git drm: drm_fourcc: Add uncompressed AFBC modifier 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 Acked-by: Liviu Dudau Signed-off-by: Liviu Dudau Link: https://patchwork.freedesktop.org/patch/msgid/20200430083220.17347-1-ben.davis@arm.com --- diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 3c4055e483711..299f9ac4840ba 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -808,6 +808,18 @@ 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 *