drm/arm/malidp: Add modifier definitions for describing Arm Framebuffer Compression (AFBC).

#define DRM_FORMAT_MOD_VENDOR_QCOM    0x05

#define DRM_FORMAT_MOD_VENDOR_QCOM    0x05

#define DRM_FORMAT_MOD_VENDOR_VIVANTE 0x06

#define DRM_FORMAT_MOD_VENDOR_VIVANTE 0x06

#define DRM_FORMAT_MOD_VENDOR_BROADCOM 0x07

#define DRM_FORMAT_MOD_VENDOR_BROADCOM 0x07

#define DRM_FORMAT_MOD_VENDOR_ARM     0x08

/* add more to the end as needed */

/* add more to the end as needed */

#define DRM_FORMAT_RESERVED	      ((1ULL << 56) - 1)

#define DRM_FORMAT_RESERVED	      ((1ULL << 56) - 1)

 */

 */

#define DRM_FORMAT_MOD_BROADCOM_UIF fourcc_mod_code(BROADCOM, 6)

#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.

 */

#define DRM_FORMAT_MOD_ARM_AFBC(__afbc_mode)	fourcc_mod_code(ARM, __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.

 */

#define AFBC_FORMAT_MOD_BLOCK_SIZE_MASK      0xf

#define AFBC_FORMAT_MOD_BLOCK_SIZE_16x16     (1ULL)

#define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8      (2ULL)

/*

 * 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)

#if defined(__cplusplus)

#if defined(__cplusplus)

}

}

#endif

#endif