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

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Date: Thu, 4 Jan 2024 09:10:27 +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]

> +
> +/* Timeout relative */
> +#define HDCP2_AKESENDCERT_WDT               100      // 100ms
> +#define HDCP2_AKESENDHPRIME_NO_STORED_WDT   1000     // 1sec
> +#define HDCP2_AKESENDHPRIME_STORED_WDT      200      // 200ms
> +#define HDCP2_AKESENDPAIRINGINFO_WDT        200      // 200ms
> +#define HDCP2_LCSENDLPRIME_WDT              7        // 7ms
> +#define HDCP2_ENC_EN_TIMER                  200      // 200 ms
> +#define HDCP2_REPAUTHSENDRECVID_WDT         3000     // 3 sec

Is this HDCP_2_2_RECVID_LIST_TIMEOUT_MS? If these are defined in HDCP
specification, move these definition to include/drm/display/drm_hdcp.h

Regards,
CK

> +#define HDCP2_REP_SEND_ACK                  2000     // 2 Sec
> +#define HDCP2_REPAUTHSTREAMRDY_WDT          100      // 100 ms
> +