From 2db8ebca1f6c158d0d439ebec4d4b9924c4c3d3c Mon Sep 17 00:00:00 2001 From: Matteo Franchin Date: Wed, 9 Jan 2019 15:58:37 +0000 Subject: [PATCH] drm/fourcc: Add modifier defininitions for AFBC 1.3 This commit adds definitions of format modifiers for version 1.3 of the Arm Framebuffer Compression (AFBC). Signed-off-by: Matteo Franchin Signed-off-by: Ayan Kumar Halder Reviewed-by: Brian Starkey Link: https://patchwork.freedesktop.org/patch/277333/ --- include/uapi/drm/drm_fourcc.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 0b44260a5ee9..41106c835747 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -581,10 +581,18 @@ extern "C" { * Indicates the superblock size(s) used for the AFBC buffer. The buffer * size (in pixels) must be aligned to a multiple of the superblock size. * Four lowest significant bits(LSBs) are reserved for block size. + * + * Where one superblock size is specified, it applies to all planes of the + * buffer (e.g. 16x16, 32x8). When multiple superblock sizes are specified, + * the first applies to the Luma plane and the second applies to the Chroma + * plane(s). e.g. (32x8_64x4 means 32x8 Luma, with 64x4 Chroma). + * Multiple superblock sizes are only valid for multi-plane YCbCr formats. */ #define AFBC_FORMAT_MOD_BLOCK_SIZE_MASK 0xf #define AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 (1ULL) #define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 (2ULL) +#define AFBC_FORMAT_MOD_BLOCK_SIZE_64x4 (3ULL) +#define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8_64x4 (4ULL) /* * AFBC lossless colorspace transform @@ -644,6 +652,21 @@ extern "C" { */ #define AFBC_FORMAT_MOD_SC (1ULL << 9) +/* + * AFBC double-buffer + * + * Indicates that the buffer is allocated in a layout safe for front-buffer + * rendering. + */ +#define AFBC_FORMAT_MOD_DB (1ULL << 10) + +/* + * AFBC buffer content hints + * + * Indicates that the buffer includes per-superblock content hints. + */ +#define AFBC_FORMAT_MOD_BCH (1ULL << 11) + #if defined(__cplusplus) } #endif