On Thu, Jan 26, 2017 at 04:32:17PM +0100, Philipp Zabel wrote:
> Vivante GC hardware uses simple 4x4 tiled and nested 64x64 supertiled
> formats as well as so-called split-tiled variants for dual-pipe
> hardware, where even and odd tiles start at different base addresses.
>
> Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
> ---
> include/uapi/drm/drm_fourcc.h | 41 +++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 41 insertions(+)
>
> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
> index a5890bf44c0af..ec0498cf61756 100644
> --- a/include/uapi/drm/drm_fourcc.h
> +++ b/include/uapi/drm/drm_fourcc.h
> @@ -159,6 +159,7 @@ extern "C" {
> #define DRM_FORMAT_MOD_VENDOR_NV 0x03
> #define DRM_FORMAT_MOD_VENDOR_SAMSUNG 0x04
> #define DRM_FORMAT_MOD_VENDOR_QCOM 0x05
> +#define DRM_FORMAT_MOD_VENDOR_VIVANTE 0x06
> /* add more to the end as needed */
>
> #define fourcc_mod_code(vendor, val) \
> @@ -233,6 +234,46 @@ extern "C" {
> */
> #define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE fourcc_mod_code(SAMSUNG, 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)
Does this mean the dual-pipe stuff has 2 planes? Do you need Ville's
driver-private format stuff for this?
Also, someone else with clue needs to review this before I can pull it in
:-)
-Daniel
> +
> #if defined(__cplusplus)
> }
> #endif
> --
> 2.11.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel
