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

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Date: Thu, 4 Jan 2024 08:56:10 +0000
From: CK Hu (胡俊光) <ck.hu@...iatek.com>
To: Mac Shen (沈俊) <Mac.Shen@...iatek.com>,
	"chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>,
	Jitao Shi (石记涛) <jitao.shi@...iatek.com>,
	"daniel@...ll.ch" <daniel@...ll.ch>, "p.zabel@...gutronix.de"
	<p.zabel@...gutronix.de>, "airlied@...il.com" <airlied@...il.com>,
	"matthias.bgg@...il.com" <matthias.bgg@...il.com>,
	"angelogioacchino.delregno@...labora.com"
	<angelogioacchino.delregno@...labora.com>
CC: "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>,
	Shuijing Li (李水静) <Shuijing.Li@...iatek.com>
Subject: Re: [PATCH] drm/mediatek/dp: Add the HDCP feature for DisplayPort

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@...iatek.com>
> ---

[snip]

> +
> +enum ENUM_HDCP2_MSG_LIST {
> +	HDCP2_MSG_ZERO                            = 0,
> +	HDCP2_MSG_AKE_INIT                        = 1,
> +	HDCP2_MSG_AKE_SEND_CERT                   = 2,
> +	HDCP2_MSG_AKE_NO_STORED_KM                = 3,
> +	HDCP2_MSG_AKE_STORED_KM                   = 4,
> +	HDCP2_MSG_AKE_SEND_H_PRIME                = 5,
> +	HDCP2_MSG_AKE_SEND_PAIRING_INFO           = 6,
> +	HDCP2_MSG_LC_INIT                         = 7,

This looks like HDCP_2_2_LC_INIT in include/drm/drm_hdcp.h. If these
are defined in HDCP specification, move these definition to
include/drm/drm_hdcp.h

Regards,
CK

> +	HDCP2_MSG_LC_SEND_L_PRIME                 = 8,
> +	HDCP2_MSG_SKE_SEND_EKS                    = 9,
> +	HDCP2_MSG_REPAUTH_SEND_RECVID_LIST        = 10,
> +	HDCP2_MSG_REPAUTH_VERIFY_RECVID_LIST      = 11,
> +	HDCP2_MSG_REPAUTH_SEND_ACK                = 12,
> +	HDCP2_MSG_REPAUTH_STREAM_MANAGE           = 13,
> +	HDCP2_MSG_REPAUTH_STREAM_READY            = 14,
> +	HDCP2_MSG_AUTH_FAIL	                  = 15,
> +	HDCP2_MSG_AUTH_DONE	                  = 16,
> +};