Re: [PATCH v2 05/11] drm/mediatek: Add mtk_ddp_sec_write to config secure buffer info

[AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>]

Il 23/10/23 06:45, Jason-JH.Lin ha scritto:
> Add mtk_ddp_sec_write to configure secure buffer information to
> cmdq secure packet data.
> Then secure cmdq driver will use these information to configure
> curresponding secure DRAM address to HW overlay in secure world.
> 
> Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
> ---
>   drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 12 ++++++++++++
>   drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h |  4 ++++
>   2 files changed, 16 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> index 771f4e173353..3dca936b9143 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> @@ -111,6 +111,18 @@ void mtk_ddp_write_mask(struct cmdq_pkt *cmdq_pkt, unsigned int value,
>   #endif
>   }
>   
> +void mtk_ddp_sec_write(struct cmdq_pkt *cmdq_pkt, u32 addr, u64 base,
> +		       const enum cmdq_iwc_addr_metadata_type type,
> +		       const u32 offset, const u32 size, const u32 port)
> +{
> +#if IS_REACHABLE(CONFIG_MTK_CMDQ)
> +	/* secure buffer will be 4K alignment */
> +	if (cmdq_pkt)

	if (!cmdq_pkt)
		return;
	cmdq_sec_pkt_write....

Regards,
Angelo