linux-kernel - Re: [PATCH v2 5/7] drm/panel: Add Samsung S6E3FC2X01 DDIC with AMS641RW panel

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Message-ID: <3e115b9c-41b2-47c8-ac92-22969766ec3e@oss.qualcomm.com>
Date: Thu, 9 Oct 2025 10:52:34 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: david@...t.cz, Neil Armstrong <neil.armstrong@...aro.org>,
        Jessica Zhang <jessica.zhang@....qualcomm.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>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Thierry Reding
 <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Casey Connolly <casey.connolly@...aro.org>
Cc: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        phone-devel@...r.kernel.org
Subject: Re: [PATCH v2 5/7] drm/panel: Add Samsung S6E3FC2X01 DDIC with
 AMS641RW panel

On 10/8/25 4:05 PM, David Heidelberg via B4 Relay wrote:
> From: David Heidelberg <david@...t.cz>
> 
> Add panel driver used in the OnePlus 6T.
> 
> No datasheet, based mostly on EDK2 init sequence and the downstream driver.
> 
> Based on work of:
>   Casey Connolly <casey@...nolly.tech>
>   Joel Selvaraj <foss@...lselvaraj.com>
>   Nia Espera <a5b6@...eup.net>
> 
> Signed-off-by: David Heidelberg <david@...t.cz>
> ---

[...]

> +	/*  This panel needs the high and low bytes swapped
> +	 *  for the brightness value
> +	 */
> +	brightness = __swab16(brightness);
> +
> +	err = mipi_dsi_dcs_set_display_brightness(dsi, brightness);

mipi_dsi_dcs_set_display_brightness_large()

Konrad