Re: [PATCH v2 3/6] drm/fourcc: Add drm/vs tiled modifiers

[Dmitry Baryshkov <dmitry.baryshkov@linaro.org>]

On 25/10/2023 13:39, Keith Zhao wrote:
> For each modifier, add the corresponding description
> 
> Signed-off-by: Keith Zhao <keith.zhao@starfivetech.com>
> ---
>   include/uapi/drm/drm_fourcc.h | 57 +++++++++++++++++++++++++++++++++++
>   1 file changed, 57 insertions(+)
> 
> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
> index 8db7fd3f7..a580a848c 100644
> --- a/include/uapi/drm/drm_fourcc.h
> +++ b/include/uapi/drm/drm_fourcc.h
> @@ -419,6 +419,7 @@ extern "C" {
>   #define DRM_FORMAT_MOD_VENDOR_ARM     0x08
>   #define DRM_FORMAT_MOD_VENDOR_ALLWINNER 0x09
>   #define DRM_FORMAT_MOD_VENDOR_AMLOGIC 0x0a
> +#define DRM_FORMAT_MOD_VENDOR_VERISILICON 0x0b
>   
>   /* add more to the end as needed */
>   
> @@ -1562,6 +1563,62 @@ drm_fourcc_canonicalize_nvidia_format_mod(__u64 modifier)
>   #define AMD_FMT_MOD_CLEAR(field) \
>   	(~((__u64)AMD_FMT_MOD_##field##_MASK << AMD_FMT_MOD_##field##_SHIFT))
>   
> +#define DRM_FORMAT_MOD_VERISILICON_TYPE_NORMAL					0x00
> +#define DRM_FORMAT_MOD_VERISILICON_TYPE_MASK					((__u64)0x3 << 54)
> +
> +#define fourcc_mod_vs_code(type, val) \
> +	fourcc_mod_code(VERISILICON, ((((__u64)type) << 54) | (val)))

Please use fourcc_mode_code directly.

> +
> +#define DRM_FORMAT_MOD_VERISILICON_NORM_MODE_MASK				0x1F
> +
> +/*
> + * An x-major 8x8 super tile consists of 64 8x8 sub-tiles in total.
> + * Each 8x8 sub-tile consists of four standard tiles .
> + * standard tiles (see Vivante 4x4 tiling layout)
> + */
> +#define DRM_FORMAT_MOD_VERISILICON_SUPER_TILED_XMAJOR_8X8		0x02
> +
> +/*
> + * A y-major 8x8 super tile consists of 64 8x8 sub-tiles in total.
> + * Each 8x8 sub-tile consists of four standard tiles .
> + * standard tiles (see Vivante 4x4 tiling layout)
> + */
> +#define DRM_FORMAT_MOD_VERISILICON_SUPER_TILED_YMAJOR_8X8		0x03
> +
> +/*
> + * An 8x8 tile consists of four standard tiles
> + * that are organized in Z-order.
> + * standard tiles (see Vivante 4x4 tiling layout)
> + */
> +#define DRM_FORMAT_MOD_VERISILICON_TILE_8X8						0x04
> +
> +/*
> + * An 8x4 tile consists of two standard tiles
> + * that are organized in Z-order.
> + * standard tiles (see Vivante 4x4 tiling layout)
> + */
> +#define DRM_FORMAT_MOD_VERISILICON_TILE_8X4						0x07
> +
> +/*
> + * An x-major 8x4 super tile consists of 128 8x4 sub-tiles in total.
> + * Each 8x4 sub-tile consists of two standard tiles.
> + * two standard tiles also same with DRM_FORMAT_MOD_VS_TILE_8X4
> + * standard tiles (see Vivante 4x4 tiling layout)
> + */
> +#define DRM_FORMAT_MOD_VERISILICON_SUPER_TILED_XMAJOR_8X4		0x0B
> +
> +/*
> + * A y-major 4x8 super tile consists of 128 4x8 sub-tiles in total.
> + * Each 4x8 sub-tile consists of two standard tiles.
> + * two standard tiles also same with DRM_FORMAT_MOD_VS_TILE_8X4
> + * standard tiles (see Vivante 4x4 tiling layout)
> + */
> +#define DRM_FORMAT_MOD_VERISILICON_SUPER_TILED_YMAJOR_4X8    0x0C
> +
> +#define fourcc_mod_vs_norm_code(tile) \
> +	fourcc_mod_vs_code(DRM_FORMAT_MOD_VERISILICON_TYPE_NORMAL, \
> +				(tile))

1) this is not a part of uAPI
2) please use fourcc_mod_code directly.

> +
>   #if defined(__cplusplus)
>   }
>   #endif

-- 
With best wishes
Dmitry