linux-kernel - Re: [PATCH] backlight: Add Congatec Board Controller (CGBC) backlight support

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Message-ID: <20251118181030.GQ1949330@google.com>
Date: Tue, 18 Nov 2025 18:10:30 +0000
From: Lee Jones <lee@...nel.org>
To: petri.karhula@...atron.fi
Cc: Thomas Richard <thomas.richard@...tlin.com>,
	Daniel Thompson <danielt@...nel.org>,
	Jingoo Han <jingoohan1@...il.com>, Helge Deller <deller@....de>,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	linux-fbdev@...r.kernel.org
Subject: Re: [PATCH] backlight: Add Congatec Board Controller (CGBC)
 backlight support

On Tue, 18 Nov 2025, Petri Karhula via B4 Relay wrote:

> From: Petri Karhula <petri.karhula@...atron.fi>
> 
> This driver provides backlight brightness control through the Linux
> backlight subsystem. It communicates with the board controller to
> adjust LCD backlight using PWM signals. Communication is done
> through Congatec Board Controller core driver.
> 
> Signed-off-by: Petri Karhula <petri.karhula@...atron.fi>
> ---
> Backlight driver to control backlight behind Congatec Board Controller.
> This driver provides backlight brightness control through the Linux
> backlight subsystem. It communicates with the board controller to
> adjust LCD backlight using PWM signals. Communication is done
> through Congatec Board Controller core driver.
>     
> ---
>  drivers/mfd/cgbc-core.c           |   1 +

Please separate this out into its own patch.

>  drivers/video/backlight/Kconfig   |  11 ++
>  drivers/video/backlight/Makefile  |   1 +
>  drivers/video/backlight/cgbc_bl.c | 281 ++++++++++++++++++++++++++++++++++++++
>  4 files changed, 294 insertions(+)

[...]

-- 
Lee Jones [李琼斯]