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lynx-kernel: Import initial lynx kernel - From https://android.googlesource.com/device/google/lynx-kernel
2024-05-19 07:36:07 +02:00
/*
* Copyright 2011 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef DRM_FOURCC_H
#define DRM_FOURCC_H
#include "drm.h"
#if defined(__cplusplus)
extern "C" {
#endif
/**
* DOC: overview
*
* In the DRM subsystem, framebuffer pixel formats are described using the
* fourcc codes defined in `include/uapi/drm/drm_fourcc.h`. In addition to the
* fourcc code, a Format Modifier may optionally be provided, in order to
* further describe the buffer's format - for example tiling or compression.
*
* Format Modifiers
* ----------------
*
* Format modifiers are used in conjunction with a fourcc code, forming a
* unique fourcc:modifier pair. This format:modifier pair must fully define the
* format and data layout of the buffer, and should be the only way to describe
* that particular buffer.
*
* Having multiple fourcc:modifier pairs which describe the same layout should
* be avoided, as such aliases run the risk of different drivers exposing
* different names for the same data format, forcing userspace to understand
* that they are aliases.
*
* Format modifiers may change any property of the buffer, including the number
* of planes and/or the required allocation size. Format modifiers are
* vendor-namespaced, and as such the relationship between a fourcc code and a
* modifier is specific to the modifer being used. For example, some modifiers
* may preserve meaning - such as number of planes - from the fourcc code,
* whereas others may not.
*
* Vendors should document their modifier usage in as much detail as
* possible, to ensure maximum compatibility across devices, drivers and
* applications.
*
* The authoritative list of format modifier codes is found in
* `include/uapi/drm/drm_fourcc.h`
*/
#define fourcc_code(a, b, c, d) ((__u32)(a) | ((__u32)(b) << 8) | \
((__u32)(c) << 16) | ((__u32)(d) << 24))
#define DRM_FORMAT_BIG_ENDIAN (1U<<31) /* format is big endian instead of little endian */
/* Reserve 0 for the invalid format specifier */
#define DRM_FORMAT_INVALID 0
/* color index */
#define DRM_FORMAT_C8 fourcc_code('C', '8', ' ', ' ') /* [7:0] C */
/* 8 bpp Red */
#define DRM_FORMAT_R8 fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
/* 16 bpp Red */
#define DRM_FORMAT_R16 fourcc_code('R', '1', '6', ' ') /* [15:0] R little endian */
/* 16 bpp RG */
#define DRM_FORMAT_RG88 fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
#define DRM_FORMAT_GR88 fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
/* 32 bpp RG */
#define DRM_FORMAT_RG1616 fourcc_code('R', 'G', '3', '2') /* [31:0] R:G 16:16 little endian */
#define DRM_FORMAT_GR1616 fourcc_code('G', 'R', '3', '2') /* [31:0] G:R 16:16 little endian */
/* 8 bpp RGB */
#define DRM_FORMAT_RGB332 fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
#define DRM_FORMAT_BGR233 fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */
/* 16 bpp RGB */
#define DRM_FORMAT_XRGB4444 fourcc_code('X', 'R', '1', '2') /* [15:0] x:R:G:B 4:4:4:4 little endian */
#define DRM_FORMAT_XBGR4444 fourcc_code('X', 'B', '1', '2') /* [15:0] x:B:G:R 4:4:4:4 little endian */
#define DRM_FORMAT_RGBX4444 fourcc_code('R', 'X', '1', '2') /* [15:0] R:G:B:x 4:4:4:4 little endian */
#define DRM_FORMAT_BGRX4444 fourcc_code('B', 'X', '1', '2') /* [15:0] B:G:R:x 4:4:4:4 little endian */
#define DRM_FORMAT_ARGB4444 fourcc_code('A', 'R', '1', '2') /* [15:0] A:R:G:B 4:4:4:4 little endian */
#define DRM_FORMAT_ABGR4444 fourcc_code('A', 'B', '1', '2') /* [15:0] A:B:G:R 4:4:4:4 little endian */
#define DRM_FORMAT_RGBA4444 fourcc_code('R', 'A', '1', '2') /* [15:0] R:G:B:A 4:4:4:4 little endian */
#define DRM_FORMAT_BGRA4444 fourcc_code('B', 'A', '1', '2') /* [15:0] B:G:R:A 4:4:4:4 little endian */
#define DRM_FORMAT_XRGB1555 fourcc_code('X', 'R', '1', '5') /* [15:0] x:R:G:B 1:5:5:5 little endian */
#define DRM_FORMAT_XBGR1555 fourcc_code('X', 'B', '1', '5') /* [15:0] x:B:G:R 1:5:5:5 little endian */
#define DRM_FORMAT_RGBX5551 fourcc_code('R', 'X', '1', '5') /* [15:0] R:G:B:x 5:5:5:1 little endian */
#define DRM_FORMAT_BGRX5551 fourcc_code('B', 'X', '1', '5') /* [15:0] B:G:R:x 5:5:5:1 little endian */
#define DRM_FORMAT_ARGB1555 fourcc_code('A', 'R', '1', '5') /* [15:0] A:R:G:B 1:5:5:5 little endian */
#define DRM_FORMAT_ABGR1555 fourcc_code('A', 'B', '1', '5') /* [15:0] A:B:G:R 1:5:5:5 little endian */
#define DRM_FORMAT_RGBA5551 fourcc_code('R', 'A', '1', '5') /* [15:0] R:G:B:A 5:5:5:1 little endian */
#define DRM_FORMAT_BGRA5551 fourcc_code('B', 'A', '1', '5') /* [15:0] B:G:R:A 5:5:5:1 little endian */
#define DRM_FORMAT_RGB565 fourcc_code('R', 'G', '1', '6') /* [15:0] R:G:B 5:6:5 little endian */
#define DRM_FORMAT_BGR565 fourcc_code('B', 'G', '1', '6') /* [15:0] B:G:R 5:6:5 little endian */
/* 24 bpp RGB */
#define DRM_FORMAT_RGB888 fourcc_code('R', 'G', '2', '4') /* [23:0] R:G:B little endian */
#define DRM_FORMAT_BGR888 fourcc_code('B', 'G', '2', '4') /* [23:0] B:G:R little endian */
/* 32 bpp RGB */
#define DRM_FORMAT_XRGB8888 fourcc_code('X', 'R', '2', '4') /* [31:0] x:R:G:B 8:8:8:8 little endian */
#define DRM_FORMAT_XBGR8888 fourcc_code('X', 'B', '2', '4') /* [31:0] x:B:G:R 8:8:8:8 little endian */
#define DRM_FORMAT_RGBX8888 fourcc_code('R', 'X', '2', '4') /* [31:0] R:G:B:x 8:8:8:8 little endian */
#define DRM_FORMAT_BGRX8888 fourcc_code('B', 'X', '2', '4') /* [31:0] B:G:R:x 8:8:8:8 little endian */
#define DRM_FORMAT_ARGB8888 fourcc_code('A', 'R', '2', '4') /* [31:0] A:R:G:B 8:8:8:8 little endian */
#define DRM_FORMAT_ABGR8888 fourcc_code('A', 'B', '2', '4') /* [31:0] A:B:G:R 8:8:8:8 little endian */
#define DRM_FORMAT_RGBA8888 fourcc_code('R', 'A', '2', '4') /* [31:0] R:G:B:A 8:8:8:8 little endian */
#define DRM_FORMAT_BGRA8888 fourcc_code('B', 'A', '2', '4') /* [31:0] B:G:R:A 8:8:8:8 little endian */
#define DRM_FORMAT_XRGB2101010 fourcc_code('X', 'R', '3', '0') /* [31:0] x:R:G:B 2:10:10:10 little endian */
#define DRM_FORMAT_XBGR2101010 fourcc_code('X', 'B', '3', '0') /* [31:0] x:B:G:R 2:10:10:10 little endian */
#define DRM_FORMAT_RGBX1010102 fourcc_code('R', 'X', '3', '0') /* [31:0] R:G:B:x 10:10:10:2 little endian */
#define DRM_FORMAT_BGRX1010102 fourcc_code('B', 'X', '3', '0') /* [31:0] B:G:R:x 10:10:10:2 little endian */
#define DRM_FORMAT_ARGB2101010 fourcc_code('A', 'R', '3', '0') /* [31:0] A:R:G:B 2:10:10:10 little endian */
#define DRM_FORMAT_ABGR2101010 fourcc_code('A', 'B', '3', '0') /* [31:0] A:B:G:R 2:10:10:10 little endian */
#define DRM_FORMAT_RGBA1010102 fourcc_code('R', 'A', '3', '0') /* [31:0] R:G:B:A 10:10:10:2 little endian */
#define DRM_FORMAT_BGRA1010102 fourcc_code('B', 'A', '3', '0') /* [31:0] B:G:R:A 10:10:10:2 little endian */
/*
* Floating point 64bpp RGB
* IEEE 754-2008 binary16 half-precision float
* [15:0] sign:exponent:mantissa 1:5:10
*/
#define DRM_FORMAT_XRGB16161616F fourcc_code('X', 'R', '4', 'H') /* [63:0] x:R:G:B 16:16:16:16 little endian */
#define DRM_FORMAT_XBGR16161616F fourcc_code('X', 'B', '4', 'H') /* [63:0] x:B:G:R 16:16:16:16 little endian */
#define DRM_FORMAT_ARGB16161616F fourcc_code('A', 'R', '4', 'H') /* [63:0] A:R:G:B 16:16:16:16 little endian */
#define DRM_FORMAT_ABGR16161616F fourcc_code('A', 'B', '4', 'H') /* [63:0] A:B:G:R 16:16:16:16 little endian */
/* packed YCbCr */
#define DRM_FORMAT_YUYV fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */
#define DRM_FORMAT_YVYU fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */
#define DRM_FORMAT_UYVY fourcc_code('U', 'Y', 'V', 'Y') /* [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian */
#define DRM_FORMAT_VYUY fourcc_code('V', 'Y', 'U', 'Y') /* [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */
#define DRM_FORMAT_AYUV fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */
#define DRM_FORMAT_XYUV8888 fourcc_code('X', 'Y', 'U', 'V') /* [31:0] X:Y:Cb:Cr 8:8:8:8 little endian */
#define DRM_FORMAT_VUY888 fourcc_code('V', 'U', '2', '4') /* [23:0] Cr:Cb:Y 8:8:8 little endian */
#define DRM_FORMAT_VUY101010 fourcc_code('V', 'U', '3', '0') /* Y followed by U then V, 10:10:10. Non-linear modifier only */
/*
* packed Y2xx indicate for each component, xx valid data occupy msb
* 16-xx padding occupy lsb
*/
#define DRM_FORMAT_Y210 fourcc_code('Y', '2', '1', '0') /* [63:0] Cr0:0:Y1:0:Cb0:0:Y0:0 10:6:10:6:10:6:10:6 little endian per 2 Y pixels */
#define DRM_FORMAT_Y212 fourcc_code('Y', '2', '1', '2') /* [63:0] Cr0:0:Y1:0:Cb0:0:Y0:0 12:4:12:4:12:4:12:4 little endian per 2 Y pixels */
#define DRM_FORMAT_Y216 fourcc_code('Y', '2', '1', '6') /* [63:0] Cr0:Y1:Cb0:Y0 16:16:16:16 little endian per 2 Y pixels */
/*
* packed Y4xx indicate for each component, xx valid data occupy msb
* 16-xx padding occupy lsb except Y410
*/
#define DRM_FORMAT_Y410 fourcc_code('Y', '4', '1', '0') /* [31:0] A:Cr:Y:Cb 2:10:10:10 little endian */
#define DRM_FORMAT_Y412 fourcc_code('Y', '4', '1', '2') /* [63:0] A:0:Cr:0:Y:0:Cb:0 12:4:12:4:12:4:12:4 little endian */
#define DRM_FORMAT_Y416 fourcc_code('Y', '4', '1', '6') /* [63:0] A:Cr:Y:Cb 16:16:16:16 little endian */
#define DRM_FORMAT_XVYU2101010 fourcc_code('X', 'V', '3', '0') /* [31:0] X:Cr:Y:Cb 2:10:10:10 little endian */
#define DRM_FORMAT_XVYU12_16161616 fourcc_code('X', 'V', '3', '6') /* [63:0] X:0:Cr:0:Y:0:Cb:0 12:4:12:4:12:4:12:4 little endian */
#define DRM_FORMAT_XVYU16161616 fourcc_code('X', 'V', '4', '8') /* [63:0] X:Cr:Y:Cb 16:16:16:16 little endian */
/*
* packed YCbCr420 2x2 tiled formats
* first 64 bits will contain Y,Cb,Cr components for a 2x2 tile
*/
/* [63:0] A3:A2:Y3:0:Cr0:0:Y2:0:A1:A0:Y1:0:Cb0:0:Y0:0 1:1:8:2:8:2:8:2:1:1:8:2:8:2:8:2 little endian */
#define DRM_FORMAT_Y0L0 fourcc_code('Y', '0', 'L', '0')
/* [63:0] X3:X2:Y3:0:Cr0:0:Y2:0:X1:X0:Y1:0:Cb0:0:Y0:0 1:1:8:2:8:2:8:2:1:1:8:2:8:2:8:2 little endian */
#define DRM_FORMAT_X0L0 fourcc_code('X', '0', 'L', '0')
/* [63:0] A3:A2:Y3:Cr0:Y2:A1:A0:Y1:Cb0:Y0 1:1:10:10:10:1:1:10:10:10 little endian */
#define DRM_FORMAT_Y0L2 fourcc_code('Y', '0', 'L', '2')
/* [63:0] X3:X2:Y3:Cr0:Y2:X1:X0:Y1:Cb0:Y0 1:1:10:10:10:1:1:10:10:10 little endian */
#define DRM_FORMAT_X0L2 fourcc_code('X', '0', 'L', '2')
/*
* 1-plane YUV 4:2:0
* In these formats, the component ordering is specified (Y, followed by U
* then V), but the exact Linear layout is undefined.
* These formats can only be used with a non-Linear modifier.
*/
#define DRM_FORMAT_YUV420_8BIT fourcc_code('Y', 'U', '0', '8')
#define DRM_FORMAT_YUV420_10BIT fourcc_code('Y', 'U', '1', '0')
/*
* 2 plane RGB + A
* index 0 = RGB plane, same format as the corresponding non _A8 format has
* index 1 = A plane, [7:0] A
*/
#define DRM_FORMAT_XRGB8888_A8 fourcc_code('X', 'R', 'A', '8')
#define DRM_FORMAT_XBGR8888_A8 fourcc_code('X', 'B', 'A', '8')
#define DRM_FORMAT_RGBX8888_A8 fourcc_code('R', 'X', 'A', '8')
#define DRM_FORMAT_BGRX8888_A8 fourcc_code('B', 'X', 'A', '8')
#define DRM_FORMAT_RGB888_A8 fourcc_code('R', '8', 'A', '8')
#define DRM_FORMAT_BGR888_A8 fourcc_code('B', '8', 'A', '8')
#define DRM_FORMAT_RGB565_A8 fourcc_code('R', '5', 'A', '8')
#define DRM_FORMAT_BGR565_A8 fourcc_code('B', '5', 'A', '8')
/*
* 2 plane YCbCr
* index 0 = Y plane, [7:0] Y
* index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
* or
* index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
*/
#define DRM_FORMAT_NV12 fourcc_code('N', 'V', '1', '2') /* 2x2 subsampled Cr:Cb plane */
#define DRM_FORMAT_NV21 fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
#define DRM_FORMAT_NV16 fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
#define DRM_FORMAT_NV61 fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
#define DRM_FORMAT_NV24 fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */
#define DRM_FORMAT_NV42 fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
/*
* 2 plane YCbCr
* index 0 = Y plane, [39:0] Y3:Y2:Y1:Y0 little endian
* index 1 = Cr:Cb plane, [39:0] Cr1:Cb1:Cr0:Cb0 little endian
*/
#define DRM_FORMAT_NV15 fourcc_code('N', 'V', '1', '5') /* 2x2 subsampled Cr:Cb plane */
/*
* 2 plane YCbCr MSB aligned
* index 0 = Y plane, [15:0] Y:x [10:6] little endian
* index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [10:6:10:6] little endian
*/
#define DRM_FORMAT_P210 fourcc_code('P', '2', '1', '0') /* 2x1 subsampled Cr:Cb plane, 10 bit per channel */
/*
* 2 plane YCbCr MSB aligned
* index 0 = Y plane, [15:0] Y:x [10:6] little endian
* index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [10:6:10:6] little endian
*/
#define DRM_FORMAT_P010 fourcc_code('P', '0', '1', '0') /* 2x2 subsampled Cr:Cb plane 10 bits per channel */
/*
* 2 plane YCbCr MSB aligned
* index 0 = Y plane, [15:0] Y:x [12:4] little endian
* index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [12:4:12:4] little endian
*/
#define DRM_FORMAT_P012 fourcc_code('P', '0', '1', '2') /* 2x2 subsampled Cr:Cb plane 12 bits per channel */
/*
* 2 plane YCbCr MSB aligned
* index 0 = Y plane, [15:0] Y little endian
* index 1 = Cr:Cb plane, [31:0] Cr:Cb [16:16] little endian
*/
#define DRM_FORMAT_P016 fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cr:Cb plane 16 bits per channel */
/* 2 plane YCbCr420.
* 3 10 bit components and 2 padding bits packed into 4 bytes.
* index 0 = Y plane, [31:0] x:Y2:Y1:Y0 2:10:10:10 little endian
* index 1 = Cr:Cb plane, [63:0] x:Cr2:Cb2:Cr1:x:Cb1:Cr0:Cb0 [2:10:10:10:2:10:10:10] little endian
*/
#define DRM_FORMAT_P030 fourcc_code('P', '0', '3', '0') /* 2x2 subsampled Cr:Cb plane 10 bits per channel packed */
/* 3 plane non-subsampled (444) YCbCr
* 16 bits per component, but only 10 bits are used and 6 bits are padded
* index 0: Y plane, [15:0] Y:x [10:6] little endian
* index 1: Cb plane, [15:0] Cb:x [10:6] little endian
* index 2: Cr plane, [15:0] Cr:x [10:6] little endian
*/
#define DRM_FORMAT_Q410 fourcc_code('Q', '4', '1', '0')
/* 3 plane non-subsampled (444) YCrCb
* 16 bits per component, but only 10 bits are used and 6 bits are padded
* index 0: Y plane, [15:0] Y:x [10:6] little endian
* index 1: Cr plane, [15:0] Cr:x [10:6] little endian
* index 2: Cb plane, [15:0] Cb:x [10:6] little endian
*/
#define DRM_FORMAT_Q401 fourcc_code('Q', '4', '0', '1')
/*
* 2 plane packed YCbCr
* 2x2 subsampled Cr:Cb plane 10 bits per channel
* index 0 = Y plane, [9:0] Y [10] little endian
* index 1 = Cr:Cb plane, [19:0] Cr:Cb [10:10] little endian
*/
#define DRM_FORMAT_Y010 fourcc_code('Y', '0', '1', '0')
/*
* 3 plane YCbCr
* index 0: Y plane, [7:0] Y
* index 1: Cb plane, [7:0] Cb
* index 2: Cr plane, [7:0] Cr
* or
* index 1: Cr plane, [7:0] Cr
* index 2: Cb plane, [7:0] Cb
*/
#define DRM_FORMAT_YUV410 fourcc_code('Y', 'U', 'V', '9') /* 4x4 subsampled Cb (1) and Cr (2) planes */
#define DRM_FORMAT_YVU410 fourcc_code('Y', 'V', 'U', '9') /* 4x4 subsampled Cr (1) and Cb (2) planes */
#define DRM_FORMAT_YUV411 fourcc_code('Y', 'U', '1', '1') /* 4x1 subsampled Cb (1) and Cr (2) planes */
#define DRM_FORMAT_YVU411 fourcc_code('Y', 'V', '1', '1') /* 4x1 subsampled Cr (1) and Cb (2) planes */
#define DRM_FORMAT_YUV420 fourcc_code('Y', 'U', '1', '2') /* 2x2 subsampled Cb (1) and Cr (2) planes */
#define DRM_FORMAT_YVU420 fourcc_code('Y', 'V', '1', '2') /* 2x2 subsampled Cr (1) and Cb (2) planes */
#define DRM_FORMAT_YUV422 fourcc_code('Y', 'U', '1', '6') /* 2x1 subsampled Cb (1) and Cr (2) planes */
#define DRM_FORMAT_YVU422 fourcc_code('Y', 'V', '1', '6') /* 2x1 subsampled Cr (1) and Cb (2) planes */
#define DRM_FORMAT_YUV444 fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */
#define DRM_FORMAT_YVU444 fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */
/*
* Format Modifiers:
*
* Format modifiers describe, typically, a re-ordering or modification
* of the data in a plane of an FB. This can be used to express tiled/
* swizzled formats, or compression, or a combination of the two.
*
* The upper 8 bits of the format modifier are a vendor-id as assigned
* below. The lower 56 bits are assigned as vendor sees fit.
*/
/* Vendor Ids: */
#define DRM_FORMAT_MOD_NONE 0
#define DRM_FORMAT_MOD_VENDOR_NONE 0
#define DRM_FORMAT_MOD_VENDOR_INTEL 0x01
#define DRM_FORMAT_MOD_VENDOR_AMD 0x02
#define DRM_FORMAT_MOD_VENDOR_NVIDIA 0x03
#define DRM_FORMAT_MOD_VENDOR_SAMSUNG 0x04
#define DRM_FORMAT_MOD_VENDOR_QCOM 0x05
#define DRM_FORMAT_MOD_VENDOR_VIVANTE 0x06
#define DRM_FORMAT_MOD_VENDOR_BROADCOM 0x07
#define DRM_FORMAT_MOD_VENDOR_ARM 0x08
#define DRM_FORMAT_MOD_VENDOR_ALLWINNER 0x09
#define DRM_FORMAT_MOD_VENDOR_AMLOGIC 0x0a
/* add more to the end as needed */
#define DRM_FORMAT_RESERVED ((1ULL << 56) - 1)
#define fourcc_mod_code(vendor, val) \
((((__u64)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | ((val) & 0x00ffffffffffffffULL))
/*
* Format Modifier tokens:
*
* When adding a new token please document the layout with a code comment,
* similar to the fourcc codes above. drm_fourcc.h is considered the
* authoritative source for all of these.
*
* Generic modifier names:
*
* DRM_FORMAT_MOD_GENERIC_* definitions are used to provide vendor-neutral names
* for layouts which are common across multiple vendors. To preserve
* compatibility, in cases where a vendor-specific definition already exists and
* a generic name for it is desired, the common name is a purely symbolic alias
* and must use the same numerical value as the original definition.
*
* Note that generic names should only be used for modifiers which describe
* generic layouts (such as pixel re-ordering), which may have
* independently-developed support across multiple vendors.
*
* In future cases where a generic layout is identified before merging with a
* vendor-specific modifier, a new 'GENERIC' vendor or modifier using vendor
* 'NONE' could be considered. This should only be for obvious, exceptional
* cases to avoid polluting the 'GENERIC' namespace with modifiers which only
* apply to a single vendor.
*
* Generic names should not be used for cases where multiple hardware vendors
* have implementations of the same standardised compression scheme (such as
* AFBC). In those cases, all implementations should use the same format
* modifier(s), reflecting the vendor of the standard.
*/
#define DRM_FORMAT_MOD_GENERIC_16_16_TILE DRM_FORMAT_MOD_SAMSUNG_16_16_TILE
/*
* Invalid Modifier
*
* This modifier can be used as a sentinel to terminate the format modifiers
* list, or to initialize a variable with an invalid modifier. It might also be
* used to report an error back to userspace for certain APIs.
*/
#define DRM_FORMAT_MOD_INVALID fourcc_mod_code(NONE, DRM_FORMAT_RESERVED)
/*
* Linear Layout
*
* Just plain linear layout. Note that this is different from no specifying any
* modifier (e.g. not setting DRM_MODE_FB_MODIFIERS in the DRM_ADDFB2 ioctl),
* which tells the driver to also take driver-internal information into account
* and so might actually result in a tiled framebuffer.
*/
#define DRM_FORMAT_MOD_LINEAR fourcc_mod_code(NONE, 0)
/*
* Set to access the secure buffer
*
* The secure buffer is used to store DRM(Digital Right Management) contents.
* DMA needs special authority to access the secure buffer. This modifier can
* be set to allow the DMA to access the secure buffer. This can be used in
* combination with another modifier.
*/
#define DRM_FORMAT_MOD_PROTECTION fourcc_mod_code(NONE, (1ULL << 51))
/* Intel framebuffer modifiers */
/*
* Intel X-tiling layout
*
* This is a tiled layout using 4Kb tiles (except on gen2 where the tiles 2Kb)
* in row-major layout. Within the tile bytes are laid out row-major, with
* a platform-dependent stride. On top of that the memory can apply
* platform-depending swizzling of some higher address bits into bit6.
*
* Note that this layout is only accurate on intel gen 8+ or valleyview chipsets.
* On earlier platforms the is highly platforms specific and not useful for
* cross-driver sharing. It exists since on a given platform it does uniquely
* identify the layout in a simple way for i915-specific userspace, which
* facilitated conversion of userspace to modifiers. Additionally the exact
* format on some really old platforms is not known.
*/
#define I915_FORMAT_MOD_X_TILED fourcc_mod_code(INTEL, 1)
/*
* Intel Y-tiling layout
*
* This is a tiled layout using 4Kb tiles (except on gen2 where the tiles 2Kb)
* in row-major layout. Within the tile bytes are laid out in OWORD (16 bytes)
* chunks column-major, with a platform-dependent height. On top of that the
* memory can apply platform-depending swizzling of some higher address bits
* into bit6.
*
* Note that this layout is only accurate on intel gen 8+ or valleyview chipsets.
* On earlier platforms the is highly platforms specific and not useful for
* cross-driver sharing. It exists since on a given platform it does uniquely
* identify the layout in a simple way for i915-specific userspace, which
* facilitated conversion of userspace to modifiers. Additionally the exact
* format on some really old platforms is not known.
*/
#define I915_FORMAT_MOD_Y_TILED fourcc_mod_code(INTEL, 2)
/*
* Intel Yf-tiling layout
*
* This is a tiled layout using 4Kb tiles in row-major layout.
* Within the tile pixels are laid out in 16 256 byte units / sub-tiles which
* are arranged in four groups (two wide, two high) with column-major layout.
* Each group therefore consits out of four 256 byte units, which are also laid
* out as 2x2 column-major.
* 256 byte units are made out of four 64 byte blocks of pixels, producing
* either a square block or a 2:1 unit.
* 64 byte blocks of pixels contain four pixel rows of 16 bytes, where the width
* in pixel depends on the pixel depth.
*/
#define I915_FORMAT_MOD_Yf_TILED fourcc_mod_code(INTEL, 3)
/*
* Intel color control surface (CCS) for render compression
*
* The framebuffer format must be one of the 8:8:8:8 RGB formats.
* The main surface will be plane index 0 and must be Y/Yf-tiled,
* the CCS will be plane index 1.
*
* Each CCS tile matches a 1024x512 pixel area of the main surface.
* To match certain aspects of the 3D hardware the CCS is
* considered to be made up of normal 128Bx32 Y tiles, Thus
* the CCS pitch must be specified in multiples of 128 bytes.
*
* In reality the CCS tile appears to be a 64Bx64 Y tile, composed
* of QWORD (8 bytes) chunks instead of OWORD (16 bytes) chunks.
* But that fact is not relevant unless the memory is accessed
* directly.
*/
#define I915_FORMAT_MOD_Y_TILED_CCS fourcc_mod_code(INTEL, 4)
#define I915_FORMAT_MOD_Yf_TILED_CCS fourcc_mod_code(INTEL, 5)
/*
* Intel color control surfaces (CCS) for Gen-12 render compression.
*
* The main surface is Y-tiled and at plane index 0, the CCS is linear and
* at index 1. A 64B CCS cache line corresponds to an area of 4x1 tiles in
* main surface. In other words, 4 bits in CCS map to a main surface cache
* line pair. The main surface pitch is required to be a multiple of four
* Y-tile widths.
*/
#define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS fourcc_mod_code(INTEL, 6)
/*
* Intel color control surfaces (CCS) for Gen-12 media compression
*
* The main surface is Y-tiled and at plane index 0, the CCS is linear and
* at index 1. A 64B CCS cache line corresponds to an area of 4x1 tiles in
* main surface. In other words, 4 bits in CCS map to a main surface cache
* line pair. The main surface pitch is required to be a multiple of four
* Y-tile widths. For semi-planar formats like NV12, CCS planes follow the
* Y and UV planes i.e., planes 0 and 1 are used for Y and UV surfaces,
* planes 2 and 3 for the respective CCS.
*/
#define I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS fourcc_mod_code(INTEL, 7)
/*
* Tiled, NV12MT, grouped in 64 (pixels) x 32 (lines) -sized macroblocks
*
* Macroblocks are laid in a Z-shape, and each pixel data is following the
* standard NV12 style.
* As for NV12, an image is the result of two frame buffers: one for Y,
* one for the interleaved Cb/Cr components (1/2 the height of the Y buffer).
* Alignment requirements are (for each buffer):
* - multiple of 128 pixels for the width
* - multiple of 32 pixels for the height
*
* For more information: see https://linuxtv.org/downloads/v4l-dvb-apis/re32.html
*/
#define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE fourcc_mod_code(SAMSUNG, 1)
/*
* Tiled, 16 (pixels) x 16 (lines) - sized macroblocks
*
* This is a simple tiled layout using tiles of 16x16 pixels in a row-major
* layout. For YCbCr formats Cb/Cr components are taken in such a way that
* they correspond to their 16x16 luma block.
*/
#define DRM_FORMAT_MOD_SAMSUNG_16_16_TILE fourcc_mod_code(SAMSUNG, 2)
/*
* 4 plane YCbCr 4:2:0 10 bits per channel
* index 0: Y8 plane, [7:0] Y little endian
* index 1: Cr8:Cb8 plane, [15:0] CrCb little endian
* index 2: Y2 plane, [1:0] Y little endian
* index 3: Cr2:Cb2 plane, [3:0] CrCb little endian
*/
#define DRM_FORMAT_MOD_SAMSUNG_YUV_8_2_SPLIT fourcc_mod_code(SAMSUNG, 3)
/*
* The colormap uses the color data generated by hardware instead of reading
* the data from the memory.
*
* It supports only solid color in BGRA8888 format. When it is used as
* a modifier, BGRA8888 format should be used and color value is passed through
* first handles[0].
*/
#define DRM_FORMAT_MOD_SAMSUNG_COLORMAP fourcc_mod_code(SAMSUNG, 4)
/*
* Samsung Band Width Compression (SBWC) modifier
*
* SBWC is a specific lossless or lossy image compression protocol and format.
* It supports video image (YUV) compression to reduce the amount of data
* transferred between IP blocks. This modifier is used when to decode data or
* when to encode data through writeback.
*/
#define SBWC_IDENTIFIER (1 << 4)
#define SBWC_FORMAT_MOD_BLOCK_SIZE_MASK (0xfULL << 5)
#define SBWC_BLOCK_SIZE_SET(blk_size) \
((blk_size << 5) & SBWC_FORMAT_MOD_BLOCK_SIZE_MASK)
#define SBWC_BLOCK_SIZE_GET(modifier) \
(((modifier) & SBWC_FORMAT_MOD_BLOCK_SIZE_MASK) >> 5)
#define SBWC_FORMAT_MOD_BLOCK_SIZE_32x2 (2ULL)
#define SBWC_FORMAT_MOD_BLOCK_SIZE_32x3 (3ULL)
#define SBWC_FORMAT_MOD_BLOCK_SIZE_32x4 (4ULL)
#define SBWC_FORMAT_MOD_BLOCK_SIZE_32x5 (5ULL)
#define SBWC_FORMAT_MOD_BLOCK_SIZE_32x6 (6ULL)
#define SBWC_FORMAT_MOD_LOSSY (1 << 12)
#define DRM_FORMAT_MOD_SAMSUNG_SBWC(blk_size) \
fourcc_mod_code(SAMSUNG, \
(SBWC_BLOCK_SIZE_SET(blk_size) | SBWC_IDENTIFIER))
/*
* Qualcomm Compressed Format
*
* Refers to a compressed variant of the base format that is compressed.
* Implementation may be platform and base-format specific.
*
* Each macrotile consists of m x n (mostly 4 x 4) tiles.
* Pixel data pitch/stride is aligned with macrotile width.
* Pixel data height is aligned with macrotile height.
* Entire pixel data buffer is aligned with 4k(bytes).
*/
#define DRM_FORMAT_MOD_QCOM_COMPRESSED fourcc_mod_code(QCOM, 1)
/* Vivante framebuffer modifiers */
/*
* Vivante 4x4 tiling layout
*
* This is a simple tiled layout using tiles of 4x4 pixels in a row-major
* layout.
*/
#define DRM_FORMAT_MOD_VIVANTE_TILED fourcc_mod_code(VIVANTE, 1)
/*
* Vivante 64x64 super-tiling layout
*
* This is a tiled layout using 64x64 pixel super-tiles, where each super-tile
* contains 8x4 groups of 2x4 tiles of 4x4 pixels (like above) each, all in row-
* major layout.
*
* For more information: see
* https://github.com/etnaviv/etna_viv/blob/master/doc/hardware.md#texture-tiling
*/
#define DRM_FORMAT_MOD_VIVANTE_SUPER_TILED fourcc_mod_code(VIVANTE, 2)
/*
* Vivante 4x4 tiling layout for dual-pipe
*
* Same as the 4x4 tiling layout, except every second 4x4 pixel tile starts at a
* different base address. Offsets from the base addresses are therefore halved
* compared to the non-split tiled layout.
*/
#define DRM_FORMAT_MOD_VIVANTE_SPLIT_TILED fourcc_mod_code(VIVANTE, 3)
/*
* Vivante 64x64 super-tiling layout for dual-pipe
*
* Same as the 64x64 super-tiling layout, except every second 4x4 pixel tile
* starts at a different base address. Offsets from the base addresses are
* therefore halved compared to the non-split super-tiled layout.
*/
#define DRM_FORMAT_MOD_VIVANTE_SPLIT_SUPER_TILED fourcc_mod_code(VIVANTE, 4)
/* NVIDIA frame buffer modifiers */
/*
* Tegra Tiled Layout, used by Tegra 2, 3 and 4.
*
* Pixels are arranged in simple tiles of 16 x 16 bytes.
*/
#define DRM_FORMAT_MOD_NVIDIA_TEGRA_TILED fourcc_mod_code(NVIDIA, 1)
/*
* Generalized Block Linear layout, used by desktop GPUs starting with NV50/G80,
* and Tegra GPUs starting with Tegra K1.
*
* Pixels are arranged in Groups of Bytes (GOBs). GOB size and layout varies
* based on the architecture generation. GOBs themselves are then arranged in
* 3D blocks, with the block dimensions (in terms of GOBs) always being a power
* of two, and hence expressible as their log2 equivalent (E.g., "2" represents
* a block depth or height of "4").
*
* Chapter 20 "Pixel Memory Formats" of the Tegra X1 TRM describes this format
* in full detail.
*
* Macro
* Bits Param Description
* ---- ----- -----------------------------------------------------------------
*
* 3:0 h log2(height) of each block, in GOBs. Placed here for
* compatibility with the existing
* DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK()-based modifiers.
*
* 4:4 - Must be 1, to indicate block-linear layout. Necessary for
* compatibility with the existing
* DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK()-based modifiers.
*
* 8:5 - Reserved (To support 3D-surfaces with variable log2(depth) block
* size). Must be zero.
*
* Note there is no log2(width) parameter. Some portions of the
* hardware support a block width of two gobs, but it is impractical
* to use due to lack of support elsewhere, and has no known
* benefits.
*
* 11:9 - Reserved (To support 2D-array textures with variable array stride
* in blocks, specified via log2(tile width in blocks)). Must be
* zero.
*
* 19:12 k Page Kind. This value directly maps to a field in the page
* tables of all GPUs >= NV50. It affects the exact layout of bits
* in memory and can be derived from the tuple
*
* (format, GPU model, compression type, samples per pixel)
*
* Where compression type is defined below. If GPU model were
* implied by the format modifier, format, or memory buffer, page
* kind would not need to be included in the modifier itself, but
* since the modifier should define the layout of the associated
* memory buffer independent from any device or other context, it
* must be included here.
*
* 21:20 g GOB Height and Page Kind Generation. The height of a GOB changed
* starting with Fermi GPUs. Additionally, the mapping between page
* kind and bit layout has changed at various points.
*
* 0 = Gob Height 8, Fermi - Volta, Tegra K1+ Page Kind mapping
* 1 = Gob Height 4, G80 - GT2XX Page Kind mapping
* 2 = Gob Height 8, Turing+ Page Kind mapping
* 3 = Reserved for future use.
*
* 22:22 s Sector layout. On Tegra GPUs prior to Xavier, there is a further
* bit remapping step that occurs at an even lower level than the
* page kind and block linear swizzles. This causes the layout of
* surfaces mapped in those SOC's GPUs to be incompatible with the
* equivalent mapping on other GPUs in the same system.
*
* 0 = Tegra K1 - Tegra Parker/TX2 Layout.
* 1 = Desktop GPU and Tegra Xavier+ Layout
*
* 25:23 c Lossless Framebuffer Compression type.
*
* 0 = none
* 1 = ROP/3D, layout 1, exact compression format implied by Page
* Kind field
* 2 = ROP/3D, layout 2, exact compression format implied by Page
* Kind field
* 3 = CDE horizontal
* 4 = CDE vertical
* 5 = Reserved for future use
* 6 = Reserved for future use
* 7 = Reserved for future use
*
* 55:25 - Reserved for future use. Must be zero.
*/
#define DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(c, s, g, k, h) \
fourcc_mod_code(NVIDIA, (0x10 | \
((h) & 0xf) | \
(((k) & 0xff) << 12) | \
(((g) & 0x3) << 20) | \
(((s) & 0x1) << 22) | \
(((c) & 0x7) << 23)))
/* To grandfather in prior block linear format modifiers to the above layout,
* the page kind "0", which corresponds to "pitch/linear" and hence is unusable
* with block-linear layouts, is remapped within drivers to the value 0xfe,
* which corresponds to the "generic" kind used for simple single-sample
* uncompressed color formats on Fermi - Volta GPUs.
*/
static __inline__ __u64
drm_fourcc_canonicalize_nvidia_format_mod(__u64 modifier)
{
if (!(modifier & 0x10) || (modifier & (0xff << 12)))
return modifier;
else
return modifier | (0xfe << 12);
}
/*
* 16Bx2 Block Linear layout, used by Tegra K1 and later
*
* Pixels are arranged in 64x8 Groups Of Bytes (GOBs). GOBs are then stacked
* vertically by a power of 2 (1 to 32 GOBs) to form a block.
*
* Within a GOB, data is ordered as 16B x 2 lines sectors laid in Z-shape.
*
* Parameter 'v' is the log2 encoding of the number of GOBs stacked vertically.
* Valid values are:
*
* 0 == ONE_GOB
* 1 == TWO_GOBS
* 2 == FOUR_GOBS
* 3 == EIGHT_GOBS
* 4 == SIXTEEN_GOBS
* 5 == THIRTYTWO_GOBS
*
* Chapter 20 "Pixel Memory Formats" of the Tegra X1 TRM describes this format
* in full detail.
*/
#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(v) \
DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 0, 0, 0, (v))
#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_ONE_GOB \
DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(0)
#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_TWO_GOB \
DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(1)
#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_FOUR_GOB \
DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(2)
#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_EIGHT_GOB \
DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3)
#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_SIXTEEN_GOB \
DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4)
#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_THIRTYTWO_GOB \
DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5)
/*
* Some Broadcom modifiers take parameters, for example the number of
* vertical lines in the image. Reserve the lower 32 bits for modifier
* type, and the next 24 bits for parameters. Top 8 bits are the
* vendor code.
*/
#define __fourcc_mod_broadcom_param_shift 8
#define __fourcc_mod_broadcom_param_bits 48
#define fourcc_mod_broadcom_code(val, params) \
fourcc_mod_code(BROADCOM, ((((__u64)params) << __fourcc_mod_broadcom_param_shift) | val))
#define fourcc_mod_broadcom_param(m) \
((int)(((m) >> __fourcc_mod_broadcom_param_shift) & \
((1ULL << __fourcc_mod_broadcom_param_bits) - 1)))
#define fourcc_mod_broadcom_mod(m) \
((m) & ~(((1ULL << __fourcc_mod_broadcom_param_bits) - 1) << \
__fourcc_mod_broadcom_param_shift))
/*
* Broadcom VC4 "T" format
*
* This is the primary layout that the V3D GPU can texture from (it
* can't do linear). The T format has:
*
* - 64b utiles of pixels in a raster-order grid according to cpp. It's 4x4
* pixels at 32 bit depth.
*
* - 1k subtiles made of a 4x4 raster-order grid of 64b utiles (so usually
* 16x16 pixels).
*
* - 4k tiles made of a 2x2 grid of 1k subtiles (so usually 32x32 pixels). On
* even 4k tile rows, they're arranged as (BL, TL, TR, BR), and on odd rows
* they're (TR, BR, BL, TL), where bottom left is start of memory.
*
* - an image made of 4k tiles in rows either left-to-right (even rows of 4k
* tiles) or right-to-left (odd rows of 4k tiles).
*/
#define DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED fourcc_mod_code(BROADCOM, 1)
/*
* Broadcom SAND format
*
* This is the native format that the H.264 codec block uses. For VC4
* HVS, it is only valid for H.264 (NV12/21) and RGBA modes.
*
* The image can be considered to be split into columns, and the
* columns are placed consecutively into memory. The width of those
* columns can be either 32, 64, 128, or 256 pixels, but in practice
* only 128 pixel columns are used.
*
* The pitch between the start of each column is set to optimally
* switch between SDRAM banks. This is passed as the number of lines
* of column width in the modifier (we can't use the stride value due
* to various core checks that look at it , so you should set the
* stride to width*cpp).
*
* Note that the column height for this format modifier is the same
* for all of the planes, assuming that each column contains both Y
* and UV. Some SAND-using hardware stores UV in a separate tiled
* image from Y to reduce the column height, which is not supported
* with these modifiers.
*
* The DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT modifier is also
* supported for DRM_FORMAT_P030 where the columns remain as 128 bytes
* wide, but as this is a 10 bpp format that translates to 96 pixels.
*/
#define DRM_FORMAT_MOD_BROADCOM_SAND32_COL_HEIGHT(v) \
fourcc_mod_broadcom_code(2, v)
#define DRM_FORMAT_MOD_BROADCOM_SAND64_COL_HEIGHT(v) \
fourcc_mod_broadcom_code(3, v)
#define DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT(v) \
fourcc_mod_broadcom_code(4, v)
#define DRM_FORMAT_MOD_BROADCOM_SAND256_COL_HEIGHT(v) \
fourcc_mod_broadcom_code(5, v)
#define DRM_FORMAT_MOD_BROADCOM_SAND32 \
DRM_FORMAT_MOD_BROADCOM_SAND32_COL_HEIGHT(0)
#define DRM_FORMAT_MOD_BROADCOM_SAND64 \
DRM_FORMAT_MOD_BROADCOM_SAND64_COL_HEIGHT(0)
#define DRM_FORMAT_MOD_BROADCOM_SAND128 \
DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT(0)
#define DRM_FORMAT_MOD_BROADCOM_SAND256 \
DRM_FORMAT_MOD_BROADCOM_SAND256_COL_HEIGHT(0)
/* Broadcom UIF format
*
* This is the common format for the current Broadcom multimedia
* blocks, including V3D 3.x and newer, newer video codecs, and
* displays.
*
* The image consists of utiles (64b blocks), UIF blocks (2x2 utiles),
* and macroblocks (4x4 UIF blocks). Those 4x4 UIF block groups are
* stored in columns, with padding between the columns to ensure that
* moving from one column to the next doesn't hit the same SDRAM page
* bank.
*
* To calculate the padding, it is assumed that each hardware block
* and the software driving it knows the platform's SDRAM page size,
* number of banks, and XOR address, and that it's identical between
* all blocks using the format. This tiling modifier will use XOR as
* necessary to reduce the padding. If a hardware block can't do XOR,
* the assumption is that a no-XOR tiling modifier will be created.
*/
#define DRM_FORMAT_MOD_BROADCOM_UIF fourcc_mod_code(BROADCOM, 6)
/*
* Arm Framebuffer Compression (AFBC) modifiers
*
* AFBC is a proprietary lossless image compression protocol and format.
* It provides fine-grained random access and minimizes the amount of data
* transferred between IP blocks.
*
* AFBC has several features which may be supported and/or used, which are
* represented using bits in the modifier. Not all combinations are valid,
* and different devices or use-cases may support different combinations.
*
* Further information on the use of AFBC modifiers can be found in
* Documentation/gpu/afbc.rst
*/
/*
* The top 4 bits (out of the 56 bits alloted for specifying vendor specific
* modifiers) denote the category for modifiers. Currently we have only two
* categories of modifiers ie AFBC and MISC. We can have a maximum of sixteen
* different categories.
*/
#define DRM_FORMAT_MOD_ARM_CODE(__type, __val) \
fourcc_mod_code(ARM, ((__u64)(__type) << 52) | ((__val) & 0x000fffffffffffffULL))
#define DRM_FORMAT_MOD_ARM_TYPE_AFBC 0x00
#define DRM_FORMAT_MOD_ARM_TYPE_MISC 0x01
#define DRM_FORMAT_MOD_ARM_AFBC(__afbc_mode) \
DRM_FORMAT_MOD_ARM_CODE(DRM_FORMAT_MOD_ARM_TYPE_AFBC, __afbc_mode)
/*
* AFBC superblock size
*
* 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
*
* Indicates that the buffer makes use of the AFBC lossless colorspace
* transform.
*/
#define AFBC_FORMAT_MOD_YTR (1ULL << 4)
/*
* AFBC block-split
*
* Indicates that the payload of each superblock is split. The second
* half of the payload is positioned at a predefined offset from the start
* of the superblock payload.
*/
#define AFBC_FORMAT_MOD_SPLIT (1ULL << 5)
/*
* AFBC sparse layout
*
* This flag indicates that the payload of each superblock must be stored at a
* predefined position relative to the other superblocks in the same AFBC
* buffer. This order is the same order used by the header buffer. In this mode
* each superblock is given the same amount of space as an uncompressed
* superblock of the particular format would require, rounding up to the next
* multiple of 128 bytes in size.
*/
#define AFBC_FORMAT_MOD_SPARSE (1ULL << 6)
/*
* AFBC copy-block restrict
*
* Buffers with this flag must obey the copy-block restriction. The restriction
* is such that there are no copy-blocks referring across the border of 8x8
* blocks. For the subsampled data the 8x8 limitation is also subsampled.
*/
#define AFBC_FORMAT_MOD_CBR (1ULL << 7)
/*
* AFBC tiled layout
*
* The tiled layout groups superblocks in 8x8 or 4x4 tiles, where all
* superblocks inside a tile are stored together in memory. 8x8 tiles are used
* for pixel formats up to and including 32 bpp while 4x4 tiles are used for
* larger bpp formats. The order between the tiles is scan line.
* When the tiled layout is used, the buffer size (in pixels) must be aligned
* to the tile size.
*/
#define AFBC_FORMAT_MOD_TILED (1ULL << 8)
/*
* AFBC solid color blocks
*
* Indicates that the buffer makes use of solid-color blocks, whereby bandwidth
* can be reduced if a whole superblock is a single color.
*/
#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)
/* 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
*
* This is used by Arm Mali Utgard and Midgard GPUs. It divides the image
* into 16x16 pixel blocks. Blocks are stored linearly in order, but pixels
* in the block are reordered.
*/
#define DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED \
DRM_FORMAT_MOD_ARM_CODE(DRM_FORMAT_MOD_ARM_TYPE_MISC, 1ULL)
/*
* Allwinner tiled modifier
*
* This tiling mode is implemented by the VPU found on all Allwinner platforms,
* codenamed sunxi. It is associated with a YUV format that uses either 2 or 3
* planes.
*
* With this tiling, the luminance samples are disposed in tiles representing
* 32x32 pixels and the chrominance samples in tiles representing 32x64 pixels.
* The pixel order in each tile is linear and the tiles are disposed linearly,
* both in row-major order.
*/
#define DRM_FORMAT_MOD_ALLWINNER_TILED fourcc_mod_code(ALLWINNER, 1)
/*
* Amlogic Video Framebuffer Compression modifiers
*
* Amlogic uses a proprietary lossless image compression protocol and format
* for their hardware video codec accelerators, either video decoders or
* video input encoders.
*
* It considerably reduces memory bandwidth while writing and reading
* frames in memory.
*
* The underlying storage is considered to be 3 components, 8bit or 10-bit
* per component YCbCr 420, single plane :
* - DRM_FORMAT_YUV420_8BIT
* - DRM_FORMAT_YUV420_10BIT
*
* The first 8 bits of the mode defines the layout, then the following 8 bits
* defines the options changing the layout.
*
* Not all combinations are valid, and different SoCs may support different
* combinations of layout and options.
*/
#define __fourcc_mod_amlogic_layout_mask 0xff
#define __fourcc_mod_amlogic_options_shift 8
#define __fourcc_mod_amlogic_options_mask 0xff
#define DRM_FORMAT_MOD_AMLOGIC_FBC(__layout, __options) \
fourcc_mod_code(AMLOGIC, \
((__layout) & __fourcc_mod_amlogic_layout_mask) | \
(((__options) & __fourcc_mod_amlogic_options_mask) \
<< __fourcc_mod_amlogic_options_shift))
/* Amlogic FBC Layouts */
/*
* Amlogic FBC Basic Layout
*
* The basic layout is composed of:
* - a body content organized in 64x32 superblocks with 4096 bytes per
* superblock in default mode.
* - a 32 bytes per 128x64 header block
*
* This layout is transferrable between Amlogic SoCs supporting this modifier.
*/
#define AMLOGIC_FBC_LAYOUT_BASIC (1ULL)
/*
* Amlogic FBC Scatter Memory layout
*
* Indicates the header contains IOMMU references to the compressed
* frames content to optimize memory access and layout.
*
* In this mode, only the header memory address is needed, thus the
* content memory organization is tied to the current producer
* execution and cannot be saved/dumped neither transferrable between
* Amlogic SoCs supporting this modifier.
*
* Due to the nature of the layout, these buffers are not expected to
* be accessible by the user-space clients, but only accessible by the
* hardware producers and consumers.
*
* The user-space clients should expect a failure while trying to mmap
* the DMA-BUF handle returned by the producer.
*/
#define AMLOGIC_FBC_LAYOUT_SCATTER (2ULL)
/* Amlogic FBC Layout Options Bit Mask */
/*
* Amlogic FBC Memory Saving mode
*
* Indicates the storage is packed when pixel size is multiple of word
* boudaries, i.e. 8bit should be stored in this mode to save allocation
* memory.
*
* This mode reduces body layout to 3072 bytes per 64x32 superblock with
* the basic layout and 3200 bytes per 64x32 superblock combined with
* the scatter layout.
*/
#define AMLOGIC_FBC_OPTION_MEM_SAVING (1ULL << 0)
/* from 52 to 55 bit are reserved for AFBC encoder source informaton */
#define AFBC_FORMAT_MOD_SOURCE_MASK (0xfULL << 52)
#define AFBC_FORMAT_MOD_SOURCE_GPU (1ULL << 52)
#define AFBC_FORMAT_MOD_SOURCE_G2D (2ULL << 52)
#if defined(__cplusplus)
}
#endif
#endif /* DRM_FOURCC_H */
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