include/drm-uapi/drm_fourcc.h

   1 /*
   2  * Copyright 2011 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  21  * OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #ifndef DRM_FOURCC_H
  25 #define DRM_FOURCC_H
  26
  27 #include "drm.h"
  28
  29 #if defined(__cplusplus)
  30 extern "C" {
  31 #endif
  32
  33 #define fourcc_code(a, b, c, d) ((__u32)(a) | ((__u32)(b) << 8) | \
  34                                  ((__u32)(c) << 16) | ((__u32)(d) << 24))
  35
  36 #define DRM_FORMAT_BIG_ENDIAN (1<<31) /* format is big endian instead of little endian */
  37
  38 /* color index */
  39 #define DRM_FORMAT_C8           fourcc_code('C', '8', ' ', ' ') /* [7:0] C */
  40
  41 /* 8 bpp Red */
  42 #define DRM_FORMAT_R8           fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
  43
  44 /* 16 bpp Red */
  45 #define DRM_FORMAT_R16          fourcc_code('R', '1', '6', ' ') /* [15:0] R little endian */
  46
  47 /* 16 bpp RG */
  48 #define DRM_FORMAT_RG88         fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
  49 #define DRM_FORMAT_GR88         fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
  50
  51 /* 32 bpp RG */
  52 #define DRM_FORMAT_RG1616       fourcc_code('R', 'G', '3', '2') /* [31:0] R:G 16:16 little endian */
  53 #define DRM_FORMAT_GR1616       fourcc_code('G', 'R', '3', '2') /* [31:0] G:R 16:16 little endian */
  54
  55 /* 8 bpp RGB */
  56 #define DRM_FORMAT_RGB332       fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
  57 #define DRM_FORMAT_BGR233       fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */
  58
  59 /* 16 bpp RGB */
  60 #define DRM_FORMAT_XRGB4444     fourcc_code('X', 'R', '1', '2') /* [15:0] x:R:G:B 4:4:4:4 little endian */
  61 #define DRM_FORMAT_XBGR4444     fourcc_code('X', 'B', '1', '2') /* [15:0] x:B:G:R 4:4:4:4 little endian */
  62 #define DRM_FORMAT_RGBX4444     fourcc_code('R', 'X', '1', '2') /* [15:0] R:G:B:x 4:4:4:4 little endian */
  63 #define DRM_FORMAT_BGRX4444     fourcc_code('B', 'X', '1', '2') /* [15:0] B:G:R:x 4:4:4:4 little endian */
  64
  65 #define DRM_FORMAT_ARGB4444     fourcc_code('A', 'R', '1', '2') /* [15:0] A:R:G:B 4:4:4:4 little endian */
  66 #define DRM_FORMAT_ABGR4444     fourcc_code('A', 'B', '1', '2') /* [15:0] A:B:G:R 4:4:4:4 little endian */
  67 #define DRM_FORMAT_RGBA4444     fourcc_code('R', 'A', '1', '2') /* [15:0] R:G:B:A 4:4:4:4 little endian */
  68 #define DRM_FORMAT_BGRA4444     fourcc_code('B', 'A', '1', '2') /* [15:0] B:G:R:A 4:4:4:4 little endian */
  69
  70 #define DRM_FORMAT_XRGB1555     fourcc_code('X', 'R', '1', '5') /* [15:0] x:R:G:B 1:5:5:5 little endian */
  71 #define DRM_FORMAT_XBGR1555     fourcc_code('X', 'B', '1', '5') /* [15:0] x:B:G:R 1:5:5:5 little endian */
  72 #define DRM_FORMAT_RGBX5551     fourcc_code('R', 'X', '1', '5') /* [15:0] R:G:B:x 5:5:5:1 little endian */
  73 #define DRM_FORMAT_BGRX5551     fourcc_code('B', 'X', '1', '5') /* [15:0] B:G:R:x 5:5:5:1 little endian */
  74
  75 #define DRM_FORMAT_ARGB1555     fourcc_code('A', 'R', '1', '5') /* [15:0] A:R:G:B 1:5:5:5 little endian */
  76 #define DRM_FORMAT_ABGR1555     fourcc_code('A', 'B', '1', '5') /* [15:0] A:B:G:R 1:5:5:5 little endian */
  77 #define DRM_FORMAT_RGBA5551     fourcc_code('R', 'A', '1', '5') /* [15:0] R:G:B:A 5:5:5:1 little endian */
  78 #define DRM_FORMAT_BGRA5551     fourcc_code('B', 'A', '1', '5') /* [15:0] B:G:R:A 5:5:5:1 little endian */
  79
  80 #define DRM_FORMAT_RGB565       fourcc_code('R', 'G', '1', '6') /* [15:0] R:G:B 5:6:5 little endian */
  81 #define DRM_FORMAT_BGR565       fourcc_code('B', 'G', '1', '6') /* [15:0] B:G:R 5:6:5 little endian */
  82
  83 /* 24 bpp RGB */
  84 #define DRM_FORMAT_RGB888       fourcc_code('R', 'G', '2', '4') /* [23:0] R:G:B little endian */
  85 #define DRM_FORMAT_BGR888       fourcc_code('B', 'G', '2', '4') /* [23:0] B:G:R little endian */
  86
  87 /* 32 bpp RGB */
  88 #define DRM_FORMAT_XRGB8888     fourcc_code('X', 'R', '2', '4') /* [31:0] x:R:G:B 8:8:8:8 little endian */
  89 #define DRM_FORMAT_XBGR8888     fourcc_code('X', 'B', '2', '4') /* [31:0] x:B:G:R 8:8:8:8 little endian */
  90 #define DRM_FORMAT_RGBX8888     fourcc_code('R', 'X', '2', '4') /* [31:0] R:G:B:x 8:8:8:8 little endian */
  91 #define DRM_FORMAT_BGRX8888     fourcc_code('B', 'X', '2', '4') /* [31:0] B:G:R:x 8:8:8:8 little endian */
  92
  93 #define DRM_FORMAT_ARGB8888     fourcc_code('A', 'R', '2', '4') /* [31:0] A:R:G:B 8:8:8:8 little endian */
  94 #define DRM_FORMAT_ABGR8888     fourcc_code('A', 'B', '2', '4') /* [31:0] A:B:G:R 8:8:8:8 little endian */
  95 #define DRM_FORMAT_RGBA8888     fourcc_code('R', 'A', '2', '4') /* [31:0] R:G:B:A 8:8:8:8 little endian */
  96 #define DRM_FORMAT_BGRA8888     fourcc_code('B', 'A', '2', '4') /* [31:0] B:G:R:A 8:8:8:8 little endian */
  97
  98 #define DRM_FORMAT_XRGB2101010  fourcc_code('X', 'R', '3', '0') /* [31:0] x:R:G:B 2:10:10:10 little endian */
  99 #define DRM_FORMAT_XBGR2101010  fourcc_code('X', 'B', '3', '0') /* [31:0] x:B:G:R 2:10:10:10 little endian */
 100 #define DRM_FORMAT_RGBX1010102  fourcc_code('R', 'X', '3', '0') /* [31:0] R:G:B:x 10:10:10:2 little endian */
 101 #define DRM_FORMAT_BGRX1010102  fourcc_code('B', 'X', '3', '0') /* [31:0] B:G:R:x 10:10:10:2 little endian */
 102
 103 #define DRM_FORMAT_ARGB2101010  fourcc_code('A', 'R', '3', '0') /* [31:0] A:R:G:B 2:10:10:10 little endian */
 104 #define DRM_FORMAT_ABGR2101010  fourcc_code('A', 'B', '3', '0') /* [31:0] A:B:G:R 2:10:10:10 little endian */
 105 #define DRM_FORMAT_RGBA1010102  fourcc_code('R', 'A', '3', '0') /* [31:0] R:G:B:A 10:10:10:2 little endian */
 106 #define DRM_FORMAT_BGRA1010102  fourcc_code('B', 'A', '3', '0') /* [31:0] B:G:R:A 10:10:10:2 little endian */
 107
 108 /* packed YCbCr */
 109 #define DRM_FORMAT_YUYV         fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */
 110 #define DRM_FORMAT_YVYU         fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */
 111 #define DRM_FORMAT_UYVY         fourcc_code('U', 'Y', 'V', 'Y') /* [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian */
 112 #define DRM_FORMAT_VYUY         fourcc_code('V', 'Y', 'U', 'Y') /* [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */
 113
 114 #define DRM_FORMAT_AYUV         fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */
 115
 116 /*
 117  * 2 plane RGB + A
 118  * index 0 = RGB plane, same format as the corresponding non _A8 format has
 119  * index 1 = A plane, [7:0] A
 120  */
 121 #define DRM_FORMAT_XRGB8888_A8  fourcc_code('X', 'R', 'A', '8')
 122 #define DRM_FORMAT_XBGR8888_A8  fourcc_code('X', 'B', 'A', '8')
 123 #define DRM_FORMAT_RGBX8888_A8  fourcc_code('R', 'X', 'A', '8')
 124 #define DRM_FORMAT_BGRX8888_A8  fourcc_code('B', 'X', 'A', '8')
 125 #define DRM_FORMAT_RGB888_A8    fourcc_code('R', '8', 'A', '8')
 126 #define DRM_FORMAT_BGR888_A8    fourcc_code('B', '8', 'A', '8')
 127 #define DRM_FORMAT_RGB565_A8    fourcc_code('R', '5', 'A', '8')
 128 #define DRM_FORMAT_BGR565_A8    fourcc_code('B', '5', 'A', '8')
 129
 130 /*
 131  * 2 plane YCbCr
 132  * index 0 = Y plane, [7:0] Y
 133  * index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
 134  * or
 135  * index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
 136  */
 137 #define DRM_FORMAT_NV12         fourcc_code('N', 'V', '1', '2') /* 2x2 subsampled Cr:Cb plane */
 138 #define DRM_FORMAT_NV21         fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
 139 #define DRM_FORMAT_NV16         fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
 140 #define DRM_FORMAT_NV61         fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
 141 #define DRM_FORMAT_NV24         fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */
 142 #define DRM_FORMAT_NV42         fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
 143
 144 /*
 145  * 3 plane YCbCr
 146  * index 0: Y plane, [7:0] Y
 147  * index 1: Cb plane, [7:0] Cb
 148  * index 2: Cr plane, [7:0] Cr
 149  * or
 150  * index 1: Cr plane, [7:0] Cr
 151  * index 2: Cb plane, [7:0] Cb
 152  */
 153 #define DRM_FORMAT_YUV410       fourcc_code('Y', 'U', 'V', '9') /* 4x4 subsampled Cb (1) and Cr (2) planes */
 154 #define DRM_FORMAT_YVU410       fourcc_code('Y', 'V', 'U', '9') /* 4x4 subsampled Cr (1) and Cb (2) planes */
 155 #define DRM_FORMAT_YUV411       fourcc_code('Y', 'U', '1', '1') /* 4x1 subsampled Cb (1) and Cr (2) planes */
 156 #define DRM_FORMAT_YVU411       fourcc_code('Y', 'V', '1', '1') /* 4x1 subsampled Cr (1) and Cb (2) planes */
 157 #define DRM_FORMAT_YUV420       fourcc_code('Y', 'U', '1', '2') /* 2x2 subsampled Cb (1) and Cr (2) planes */
 158 #define DRM_FORMAT_YVU420       fourcc_code('Y', 'V', '1', '2') /* 2x2 subsampled Cr (1) and Cb (2) planes */
 159 #define DRM_FORMAT_YUV422       fourcc_code('Y', 'U', '1', '6') /* 2x1 subsampled Cb (1) and Cr (2) planes */
 160 #define DRM_FORMAT_YVU422       fourcc_code('Y', 'V', '1', '6') /* 2x1 subsampled Cr (1) and Cb (2) planes */
 161 #define DRM_FORMAT_YUV444       fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */
 162 #define DRM_FORMAT_YVU444       fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */
 163
 164
 165 /*
 166  * Format Modifiers:
 167  *
 168  * Format modifiers describe, typically, a re-ordering or modification
 169  * of the data in a plane of an FB.  This can be used to express tiled/
 170  * swizzled formats, or compression, or a combination of the two.
 171  *
 172  * The upper 8 bits of the format modifier are a vendor-id as assigned
 173  * below.  The lower 56 bits are assigned as vendor sees fit.
 174  */
 175
 176 /* Vendor Ids: */
 177 #define DRM_FORMAT_MOD_NONE           0
 178 #define DRM_FORMAT_MOD_VENDOR_NONE    0
 179 #define DRM_FORMAT_MOD_VENDOR_INTEL   0x01
 180 #define DRM_FORMAT_MOD_VENDOR_AMD     0x02
 181 #define DRM_FORMAT_MOD_VENDOR_NV      0x03
 182 #define DRM_FORMAT_MOD_VENDOR_SAMSUNG 0x04
 183 #define DRM_FORMAT_MOD_VENDOR_QCOM    0x05
 184 #define DRM_FORMAT_MOD_VENDOR_VIVANTE 0x06
 185 #define DRM_FORMAT_MOD_VENDOR_BROADCOM 0x07
 186 /* add more to the end as needed */
 187
 188 #define DRM_FORMAT_RESERVED           ((1ULL << 56) - 1)
 189
 190 #define fourcc_mod_code(vendor, val) \
 191         ((((__u64)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | ((val) & 0x00ffffffffffffffULL))
 192
 193 /*
 194  * Format Modifier tokens:
 195  *
 196  * When adding a new token please document the layout with a code comment,
 197  * similar to the fourcc codes above. drm_fourcc.h is considered the
 198  * authoritative source for all of these.
 199  */
 200
 201 /*
 202  * Invalid Modifier
 203  *
 204  * This modifier can be used as a sentinel to terminate the format modifiers
 205  * list, or to initialize a variable with an invalid modifier. It might also be
 206  * used to report an error back to userspace for certain APIs.
 207  */
 208 #define DRM_FORMAT_MOD_INVALID  fourcc_mod_code(NONE, DRM_FORMAT_RESERVED)
 209
 210 /*
 211  * Linear Layout
 212  *
 213  * Just plain linear layout. Note that this is different from no specifying any
 214  * modifier (e.g. not setting DRM_MODE_FB_MODIFIERS in the DRM_ADDFB2 ioctl),
 215  * which tells the driver to also take driver-internal information into account
 216  * and so might actually result in a tiled framebuffer.
 217  */
 218 #define DRM_FORMAT_MOD_LINEAR   fourcc_mod_code(NONE, 0)
 219
 220 /* Intel framebuffer modifiers */
 221
 222 /*
 223  * Intel X-tiling layout
 224  *
 225  * This is a tiled layout using 4Kb tiles (except on gen2 where the tiles 2Kb)
 226  * in row-major layout. Within the tile bytes are laid out row-major, with
 227  * a platform-dependent stride. On top of that the memory can apply
 228  * platform-depending swizzling of some higher address bits into bit6.
 229  *
 230  * This format is highly platforms specific and not useful for cross-driver
 231  * sharing. It exists since on a given platform it does uniquely identify the
 232  * layout in a simple way for i915-specific userspace.
 233  */
 234 #define I915_FORMAT_MOD_X_TILED fourcc_mod_code(INTEL, 1)
 235
 236 /*
 237  * Intel Y-tiling layout
 238  *
 239  * This is a tiled layout using 4Kb tiles (except on gen2 where the tiles 2Kb)
 240  * in row-major layout. Within the tile bytes are laid out in OWORD (16 bytes)
 241  * chunks column-major, with a platform-dependent height. On top of that the
 242  * memory can apply platform-depending swizzling of some higher address bits
 243  * into bit6.
 244  *
 245  * This format is highly platforms specific and not useful for cross-driver
 246  * sharing. It exists since on a given platform it does uniquely identify the
 247  * layout in a simple way for i915-specific userspace.
 248  */
 249 #define I915_FORMAT_MOD_Y_TILED fourcc_mod_code(INTEL, 2)
 250
 251 /*
 252  * Intel Yf-tiling layout
 253  *
 254  * This is a tiled layout using 4Kb tiles in row-major layout.
 255  * Within the tile pixels are laid out in 16 256 byte units / sub-tiles which
 256  * are arranged in four groups (two wide, two high) with column-major layout.
 257  * Each group therefore consits out of four 256 byte units, which are also laid
 258  * out as 2x2 column-major.
 259  * 256 byte units are made out of four 64 byte blocks of pixels, producing
 260  * either a square block or a 2:1 unit.
 261  * 64 byte blocks of pixels contain four pixel rows of 16 bytes, where the width
 262  * in pixel depends on the pixel depth.
 263  */
 264 #define I915_FORMAT_MOD_Yf_TILED fourcc_mod_code(INTEL, 3)
 265
 266 /*
 267  * Intel color control surface (CCS) for render compression
 268  *
 269  * The framebuffer format must be one of the 8:8:8:8 RGB formats.
 270  * The main surface will be plane index 0 and must be Y/Yf-tiled,
 271  * the CCS will be plane index 1.
 272  *
 273  * Each CCS tile matches a 1024x512 pixel area of the main surface.
 274  * To match certain aspects of the 3D hardware the CCS is
 275  * considered to be made up of normal 128Bx32 Y tiles, Thus
 276  * the CCS pitch must be specified in multiples of 128 bytes.
 277  *
 278  * In reality the CCS tile appears to be a 64Bx64 Y tile, composed
 279  * of QWORD (8 bytes) chunks instead of OWORD (16 bytes) chunks.
 280  * But that fact is not relevant unless the memory is accessed
 281  * directly.
 282  */
 283 #define I915_FORMAT_MOD_Y_TILED_CCS     fourcc_mod_code(INTEL, 4)
 284 #define I915_FORMAT_MOD_Yf_TILED_CCS    fourcc_mod_code(INTEL, 5)
 285
 286 /*
 287  * Tiled, NV12MT, grouped in 64 (pixels) x 32 (lines) -sized macroblocks
 288  *
 289  * Macroblocks are laid in a Z-shape, and each pixel data is following the
 290  * standard NV12 style.
 291  * As for NV12, an image is the result of two frame buffers: one for Y,
 292  * one for the interleaved Cb/Cr components (1/2 the height of the Y buffer).
 293  * Alignment requirements are (for each buffer):
 294  * - multiple of 128 pixels for the width
 295  * - multiple of  32 pixels for the height
 296  *
 297  * For more information: see https://linuxtv.org/downloads/v4l-dvb-apis/re32.html
 298  */
 299 #define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE       fourcc_mod_code(SAMSUNG, 1)
 300
 301 /* Vivante framebuffer modifiers */
 302
 303 /*
 304  * Vivante 4x4 tiling layout
 305  *
 306  * This is a simple tiled layout using tiles of 4x4 pixels in a row-major
 307  * layout.
 308  */
 309 #define DRM_FORMAT_MOD_VIVANTE_TILED            fourcc_mod_code(VIVANTE, 1)
 310
 311 /*
 312  * Vivante 64x64 super-tiling layout
 313  *
 314  * This is a tiled layout using 64x64 pixel super-tiles, where each super-tile
 315  * contains 8x4 groups of 2x4 tiles of 4x4 pixels (like above) each, all in row-
 316  * major layout.
 317  *
 318  * For more information: see
 319  * https://github.com/etnaviv/etna_viv/blob/master/doc/hardware.md#texture-tiling
 320  */
 321 #define DRM_FORMAT_MOD_VIVANTE_SUPER_TILED      fourcc_mod_code(VIVANTE, 2)
 322
 323 /*
 324  * Vivante 4x4 tiling layout for dual-pipe
 325  *
 326  * Same as the 4x4 tiling layout, except every second 4x4 pixel tile starts at a
 327  * different base address. Offsets from the base addresses are therefore halved
 328  * compared to the non-split tiled layout.
 329  */
 330 #define DRM_FORMAT_MOD_VIVANTE_SPLIT_TILED      fourcc_mod_code(VIVANTE, 3)
 331
 332 /*
 333  * Vivante 64x64 super-tiling layout for dual-pipe
 334  *
 335  * Same as the 64x64 super-tiling layout, except every second 4x4 pixel tile
 336  * starts at a different base address. Offsets from the base addresses are
 337  * therefore halved compared to the non-split super-tiled layout.
 338  */
 339 #define DRM_FORMAT_MOD_VIVANTE_SPLIT_SUPER_TILED fourcc_mod_code(VIVANTE, 4)
 340
 341 /* NVIDIA Tegra frame buffer modifiers */
 342
 343 /*
 344  * Some modifiers take parameters, for example the number of vertical GOBs in
 345  * a block. Reserve the lower 32 bits for parameters
 346  */
 347 #define __fourcc_mod_tegra_mode_shift 32
 348 #define fourcc_mod_tegra_code(val, params) \
 349         fourcc_mod_code(NV, ((((__u64)val) << __fourcc_mod_tegra_mode_shift) | params))
 350 #define fourcc_mod_tegra_mod(m) \
 351         (m & ~((1ULL << __fourcc_mod_tegra_mode_shift) - 1))
 352 #define fourcc_mod_tegra_param(m) \
 353         (m & ((1ULL << __fourcc_mod_tegra_mode_shift) - 1))
 354
 355 /*
 356  * Tegra Tiled Layout, used by Tegra 2, 3 and 4.
 357  *
 358  * Pixels are arranged in simple tiles of 16 x 16 bytes.
 359  */
 360 #define NV_FORMAT_MOD_TEGRA_TILED fourcc_mod_tegra_code(1, 0)
 361
 362 /*
 363  * Tegra 16Bx2 Block Linear layout, used by TK1/TX1
 364  *
 365  * Pixels are arranged in 64x8 Groups Of Bytes (GOBs). GOBs are then stacked
 366  * vertically by a power of 2 (1 to 32 GOBs) to form a block.
 367  *
 368  * Within a GOB, data is ordered as 16B x 2 lines sectors laid in Z-shape.
 369  *
 370  * Parameter 'v' is the log2 encoding of the number of GOBs stacked vertically.
 371  * Valid values are:
 372  *
 373  * 0 == ONE_GOB
 374  * 1 == TWO_GOBS
 375  * 2 == FOUR_GOBS
 376  * 3 == EIGHT_GOBS
 377  * 4 == SIXTEEN_GOBS
 378  * 5 == THIRTYTWO_GOBS
 379  *
 380  * Chapter 20 "Pixel Memory Formats" of the Tegra X1 TRM describes this format
 381  * in full detail.
 382  */
 383 #define NV_FORMAT_MOD_TEGRA_16BX2_BLOCK(v) fourcc_mod_tegra_code(2, v)
 384
 385 /*
 386  * Broadcom VC4 "T" format
 387  *
 388  * This is the primary layout that the V3D GPU can texture from (it
 389  * can't do linear).  The T format has:
 390  *
 391  * - 64b utiles of pixels in a raster-order grid according to cpp.  It's 4x4
 392  *   pixels at 32 bit depth.
 393  *
 394  * - 1k subtiles made of a 4x4 raster-order grid of 64b utiles (so usually
 395  *   16x16 pixels).
 396  *
 397  * - 4k tiles made of a 2x2 grid of 1k subtiles (so usually 32x32 pixels).  On
 398  *   even 4k tile rows, they're arranged as (BL, TL, TR, BR), and on odd rows
 399  *   they're (TR, BR, BL, TL), where bottom left is start of memory.
 400  *
 401  * - an image made of 4k tiles in rows either left-to-right (even rows of 4k
 402  *   tiles) or right-to-left (odd rows of 4k tiles).
 403  */
 404 #define DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED fourcc_mod_code(BROADCOM, 1)
 405
 406 #if defined(__cplusplus)
 407 }
 408 #endif
 409
 410 #endif /* DRM_FOURCC_H */