linux-kernel - Re: [PATCH v3 06/11] drm/mediatek: Add get_sec_port interface to mtk_ddp

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Date: Tue, 26 Dec 2023 05:24:37 +0000
From: CK Hu (胡俊光) <ck.hu@...iatek.com>
To: "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
	Jason-JH Lin (林睿祥) <Jason-JH.Lin@...iatek.com>,
	"chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>, "conor+dt@...nel.org"
	<conor+dt@...nel.org>, "robh+dt@...nel.org" <robh+dt@...nel.org>,
	"krzysztof.kozlowski+dt@...aro.org" <krzysztof.kozlowski+dt@...aro.org>,
	"angelogioacchino.delregno@...labora.com"
	<angelogioacchino.delregno@...labora.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	Singo Chang (張興國) <Singo.Chang@...iatek.com>,
	Johnson Wang (王聖鑫) <Johnson.Wang@...iatek.com>,
	"linaro-mm-sig@...ts.linaro.org" <linaro-mm-sig@...ts.linaro.org>,
	"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Jason-ch Chen (陳建豪)
	<Jason-ch.Chen@...iatek.com>, Shawn Sung (宋孝謙)
	<Shawn.Sung@...iatek.com>, Nancy Lin (林欣螢)
	<Nancy.Lin@...iatek.com>, "jkardatzke@...gle.com" <jkardatzke@...gle.com>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	Project_Global_Chrome_Upstream_Group
	<Project_Global_Chrome_Upstream_Group@...iatek.com>,
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3 06/11] drm/mediatek: Add get_sec_port interface to
 mtk_ddp_comp

On Sun, 2023-12-24 at 02:29 +0800, Jason-JH.Lin wrote:
> Add get_sec_port interface to ddp_comp to get the secure port
> settings
> from ovl and ovl_adaptor.
> Then mediatek-drm will use secure cmdq driver to configure DRAM
> access
> permission in secure world by their secure port settings.
> 
> Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
> ---

TODO: drop this patch.


Regards,
CK

>  drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> index b5a05ca3a385..1e6a120a103d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> @@ -84,6 +84,7 @@ struct mtk_ddp_comp_funcs {
>  	void (*add)(struct device *dev, struct mtk_mutex *mutex);
>  	void (*remove)(struct device *dev, struct mtk_mutex *mutex);
>  	unsigned int (*encoder_index)(struct device *dev);
> +	u64 (*get_sec_port)(struct mtk_ddp_comp *comp, unsigned int
> idx);
>  };
>  
>  struct mtk_ddp_comp {
> @@ -199,6 +200,14 @@ static inline unsigned int
> mtk_ddp_gamma_get_lut_size(struct mtk_ddp_comp *comp)
>  	return 0;
>  }
>  
> +static inline u64 mtk_ddp_comp_layer_get_sec_port(struct
> mtk_ddp_comp *comp,
> +						  unsigned int idx)
> +{
> +	if (comp->funcs && comp->funcs->get_sec_port)
> +		return comp->funcs->get_sec_port(comp, idx);
> +	return 0;
> +}
> +
>  static inline void mtk_ddp_gamma_set(struct mtk_ddp_comp *comp,
>  				     struct drm_crtc_state *state)
>  {