Re: [PATCH] drm/mediatek/dp: Add the HDCP feature for DisplayPort

From: "CK Hu (胡俊光)" <ck.hu@mediatek.com>
To: "Mac Shen (沈俊)" <Mac.Shen@mediatek.com>,
	"chunkuang.hu@kernel.org" <chunkuang.hu@kernel.org>,
	"Jitao Shi (石记涛)" <jitao.shi@mediatek.com>,
	"daniel@ffwll.ch" <daniel@ffwll.ch>,
	"p.zabel@pengutronix.de" <p.zabel@pengutronix.de>,
	"airlied@gmail.com" <airlied@gmail.com>,
	"matthias.bgg@gmail.com" <matthias.bgg@gmail.com>,
	"angelogioacchino.delregno@collabora.com"
	<angelogioacchino.delregno@collabora.com>
Cc: "dri-devel@lists.freedesktop.org"
	<dri-devel@lists.freedesktop.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-mediatek@lists.infradead.org"
	<linux-mediatek@lists.infradead.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"Shuijing Li (李水静)" <Shuijing.Li@mediatek.com>
Subject: Re: [PATCH] drm/mediatek/dp: Add the HDCP feature for DisplayPort
Date: Thu, 4 Jan 2024 09:43:17 +0000	[thread overview]
Message-ID: <98a40748e34a5cef3cbb635e1a8da0bc200d016a.camel@mediatek.com> (raw)
In-Reply-To: <20231124085346.26602-1-mac.shen@mediatek.com>

Hi, Mac:

On Fri, 2023-11-24 at 16:53 +0800, mac.shen wrote:
> Add tee client application, HDCP 1.x and 2.x authentication for
> DisplayPort
> to support the HDCP feature.
> 
> Signed-off-by: mac.shen <mac.shen@mediatek.com>
> ---

[snip]

> +
> +struct hdcp2_info_rx {
> +	u8 cert[HDCP2_CERTRX_SIZE];
> +	u8 rrx[HDCP2_RRX_SIZE];
> +	u8 rx_caps[HDCP2_RXCAPS_SIZE];
> +	u8 rx_info[HDCP2_RXINFO_SIZE];
> +	u8 ekh_km[HDCP2_EKHKM_SIZE];
> +	u8 v_prime[HDCP2_VPRIME_SIZE];
> +	u8 m_prime[HDCP2_REP_MPRIME_SIZE];
> +	u8 h_prime[HDCP2_HPRIME_SIZE];
> +	u8 l_prime[HDCP2_LPRIME_SIZE];

This is defined in include/drm/display/drm_hdcp.h as struct
hdcp2_lc_send_lprime{}, so I think you could reuse it. Ditto for all
others in hdcp2_info_rx{}.

Regards,
CK

> +	u8 recv_id_list[HDCP2_MAX_DEVICE_COUNT * HDCP2_RECVID_SIZE];
> +	u8 seq_num_v[HDCP2_SEQ_NUM_V_SIZE];
> +};
> +
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