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Message-ID: <e581a124dfcdd08f09fb4cd1e36faf1412cd0390.camel@mediatek.com>
Date: Thu, 22 Aug 2024 06:20:09 +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 v3 2/3] Subject: [PATCH] drm/mediatek/dp: Add HDCP2.x
feature for DisplayPort
Hi, Mac:
On Sat, 2024-06-08 at 20:01 +0800, mac.shen wrote:
> Changes in v3:
> - refine the function to get system time
> - refine the flow to do HDCP with content type and
> protection value which set by user space
> - refine the flow to update content protection
> - refine the flow to do HDCP2.x authentication
> per suggestion from the previous thread:
> https://urldefense.com/v3/__https://patchwork.kernel.org/project/linux-mediatek__;!!CTRNKA9wMg0ARbw!md6xUiYN88D2YmETs8FQgaExM2zH8S1SmAEU9GRchwpNsXOyDFul3ziVKhRpCJaj8Rcn-gvM-801runjwA$
> /patch/20240205055055.25340-3-mac.shen@...iatek.com/
>
> Signed-off-by: mac.shen <mac.shen@...iatek.com>
> ---
[snip]
> +
> +static int dp_tx_hdcp2x_read_lc_send_lprime(struct mtk_hdcp_info *hdcp_info)
> +{
> + struct mtk_dp *mtk_dp = container_of(hdcp_info, struct mtk_dp, hdcp_info);
> + ssize_t ret;
> +
> + dev_dbg(mtk_dp->dev, "[HDCP2.X] HDCP_2_2_LC_SEND_LPRIME\n");
> +
> + mdelay(HDCP_2_2_DP_LPRIME_TIMEOUT_MS);
> +
> + ret = drm_dp_dpcd_read(&mtk_dp->aux, DP_HDCP_2_2_LC_SEND_LPRIME_OFFSET,
> + hdcp_info->hdcp2_info.hdcp_rx.send_lprime.l_prime,
> + HDCP_2_2_L_PRIME_LEN);
> + if (ret < 0)
> + return ret;
> +
> + return 0;
This function is called only by dp_tx_hdcp2x_locality_check(), and this function just does two things.
So merge this function into dp_tx_hdcp2x_locality_check().
Regards,
CK
> +}
> +
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