linux-kernel - Re: [PATCH v5 07/10] drm/bridge: it6505: fix HDCP CTS KSV list read with UNIGRAF DPR-100.

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Message-ID: <s25g54atrkqjv6pfhege6eekd5fkx2orxwddevkotpoaphrldc@57mf46ksd4fo>
Date: Mon, 14 Oct 2024 14:55:38 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Hermes Wu <Hermes.Wu@....com.tw>
Cc: Pin-yen Lin <treapking@...omium.org>, 
	Kenneth Hung <Kenneth.hung@....com.tw>, Pet Weng <Pet.Weng@....com.tw>, 
	Andrzej Hajda <andrzej.hajda@...el.com>, Neil Armstrong <neil.armstrong@...aro.org>, 
	Robert Foss <rfoss@...nel.org>, Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
	Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, 
	Simona Vetter <simona@...ll.ch>, "open list:DRM DRIVERS" <dri-devel@...ts.freedesktop.org>, 
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 07/10] drm/bridge: it6505: fix HDCP CTS KSV list read
 with UNIGRAF DPR-100.

On Tue, Oct 01, 2024 at 02:43:44PM +0800, Hermes Wu wrote:
> From: Hermes Wu <Hermes.wu@....com.tw>
> 
> When running the HDCP CTS test with UNIGRAF DPR-100.
> KSV list must be read from DP_AUX_HDCP_KSV_FIFO in an AUX request, and can not separate with multiple read requests.
> 
> The AUX operation command "CMD_AUX_GET_KSV_LIST" reads the KSV list with AUX FIFO and is able to read DP_AUX_HDCP_KSV_FIFO in an AUX request.
> 
> Add it6505_get_ksvlist() which uses CMD_AUX_GET_KSV_LIST operation to read the KSV list.

Please keep the commit message wrapped at 72-75 chars.

> 
> Signed-off-by: Hermes Wu <Hermes.wu@....com.tw>
> ---
>  drivers/gpu/drm/bridge/ite-it6505.c | 48 +++++++++++++++++++++--------
>  1 file changed, 36 insertions(+), 12 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

-- 
With best wishes
Dmitry