[PATCH v4 3/9] drm/fourcc: Add fourcc for Mali linear tiled formats

[Liviu Dudau]

On Fri, Oct 12, 2018 at 05:35:54PM +0100, Alexandru Gheorghe wrote:
> Mali-DP implements a number of tiled yuv formats which are not
> currently described in drm_fourcc.h.
> This adds those definitions and describes their memory layout by
> using the newly added char_per_block, block_w, block_h.
> 
> Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe at arm.com>

Acked-by: Liviu Dudau <liviu.dudau at arm.com>

> ---
>  drivers/gpu/drm/drm_fourcc.c  | 12 ++++++++++++
>  include/uapi/drm/drm_fourcc.h | 14 ++++++++++++++
>  2 files changed, 26 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
> index a843a5fc8dbf..69caa577149c 100644
> --- a/drivers/gpu/drm/drm_fourcc.c
> +++ b/drivers/gpu/drm/drm_fourcc.c
> @@ -228,6 +228,18 @@ const struct drm_format_info *__drm_format_info(u32 format)
>  		{ .format = DRM_FORMAT_P010,		.depth = 0,  .num_planes = 2, .cpp = { 2, 4, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true  },
>  		{ .format = DRM_FORMAT_P012,		.depth = 0,  .num_planes = 2, .cpp = { 2, 4, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true  },
>  		{ .format = DRM_FORMAT_P016,		.depth = 0,  .num_planes = 2, .cpp = { 2, 4, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true  },
> +		{ .format = DRM_FORMAT_Y0L0,		.depth = 0,  .num_planes = 1,
> +		  .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0},
> +		  .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
> +		{ .format = DRM_FORMAT_X0L0,		.depth = 0,  .num_planes = 1,
> +		  .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0},
> +		  .hsub = 2, .vsub = 2, .is_yuv = true },
> +		{ .format = DRM_FORMAT_Y0L2,		.depth = 0,  .num_planes = 1,
> +		  .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0},
> +		  .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
> +		{ .format = DRM_FORMAT_X0L2,		.depth = 0,  .num_planes = 1,
> +		  .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0},
> +		  .hsub = 2, .vsub = 2, .is_yuv = true },
>  	};
>  
>  	unsigned int i;
> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
> index 600106adf91f..4de86dbf40ca 100644
> --- a/include/uapi/drm/drm_fourcc.h
> +++ b/include/uapi/drm/drm_fourcc.h
> @@ -152,6 +152,20 @@ extern "C" {
>  
>  #define DRM_FORMAT_AYUV		fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 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')
> +
>  /*
>   * 2 plane RGB + A
>   * index 0 = RGB plane, same format as the corresponding non _A8 format has
> -- 
> 2.18.0
> 

-- 
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