[PATCH] drm: renesas: Add zpos, alpha and blend properties to RZ/G2L DU

[Tommaso Merciai]

Hi Biju,

Thank you for the patch.

On Fri, Apr 04, 2025 at 02:30:45PM +0100, Biju Das wrote:
> Add support for zpos, alpha and blend properties to RZ/G2L DU
> driver as the IP supports all these properties.
> 
> It is tested by the below modetest commands:
> 
> modetest -M rzg2l-du -s 44 at 42:1920x1080 at AR24 -d -P \
> 37 at 42:512x300+200+200 at XR15
> 
> modetest -M rzg2l-du -w {32,37}:alpha:{0,65535}
> modetest -M rzg2l-du -w {32,37}:zpos:{0,1}

Tested on RZ/G3E SoC DU using:

modetest -M rzg2l-du -s 55 at 53:1920x1080 at AR24 -d -P 47 at 53:512x300+200+200 at XR15

modetest -M rzg2l-du -w 47:alpha:0
modetest -M rzg2l-du -w 47:alpha:65535

modetest -M rzg2l-du -w 47:zpos:0
modetest -M rzg2l-du -w 47:zpos:1


Tested-by: Tommaso Merciai <tommaso.merciai.xr at bp.renesas.com>

> Signed-off-by: Biju Das <biju.das.jz at bp.renesas.com>
> ---
>  drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c
> index 8643ff2eec46..040d4e4aff00 100644
> --- a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c
> +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c
> @@ -340,6 +340,15 @@ int rzg2l_du_vsp_init(struct rzg2l_du_vsp *vsp, struct device_node *np,
>  
>  		drm_plane_helper_add(&plane->plane,
>  				     &rzg2l_du_vsp_plane_helper_funcs);
> +
> +		drm_plane_create_alpha_property(&plane->plane);
> +		drm_plane_create_zpos_property(&plane->plane, i, 0,
> +					       num_planes - 1);
> +
> +		drm_plane_create_blend_mode_property(&plane->plane,
> +					BIT(DRM_MODE_BLEND_PIXEL_NONE) |
> +					BIT(DRM_MODE_BLEND_PREMULTI) |
> +					BIT(DRM_MODE_BLEND_COVERAGE));
>  	}
>  
>  	return 0;
> -- 
> 2.43.0
> 
> 

Thanks & Regards,
Tommaso