linux-kernel - Re: [PATCH v6 10/10] drm/bridge: it6505: add I2C functionality on AUX

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Message-ID: <kiuhxqulo5eatymma25k7za5ca3pjaof436poqhy26tlyatrsq@dez6joc7gddv>
Date: Sun, 20 Oct 2024 16:54:50 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Hermes.wu@....com.tw
Cc: 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>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, Pin-yen Lin <treapking@...omium.org>, 
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
	Kenneth Hung <Kenneth.hung@....com.tw>, Pet Weng <Pet.Weng@....com.tw>
Subject: Re: [PATCH v6 10/10] drm/bridge: it6505: add I2C functionality on AUX

On Wed, Oct 16, 2024 at 03:54:22PM +0800, Hermes Wu via B4 Relay wrote:
> From: Hermes Wu <Hermes.wu@....com.tw>
> 
> DisplayPort AUX protocol supports I2C transport which is capable of
> reading EDID or supports MCCS.
> 
> In drm_dp_helper, drm_dp_i2c_xfer() packs I2C requests into a
> sequence of AUX requests.
> it6505_aux_i2c_operation() is implemented to match drm_dp_i2c_xfer()
> operactions.
> it6505_aux_i2c_transfer() adds I2C functionality
> for it6505_aux_transfer().
> 
> Signed-off-by: Hermes Wu <Hermes.wu@....com.tw>
> ---
>  drivers/gpu/drm/bridge/ite-it6505.c | 177 +++++++++++++++++++++++++++++++++++-
>  1 file changed, 175 insertions(+), 2 deletions(-)
> 

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

-- 
With best wishes
Dmitry