linux-kernel - Re: [PATCH v2 1/3] drm: Add panel backlight quirks

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Message-ID: <0aa9e0aa-3d8f-4277-8348-99b9dd176954@quicinc.com>
Date: Fri, 28 Jun 2024 21:52:39 -0700
From: Jeff Johnson <quic_jjohnson@...cinc.com>
To: Thomas Weißschuh <linux@...ssschuh.net>,
        Alex Deucher
	<alexander.deucher@....com>,
        Christian König
	<christian.koenig@....com>,
        David Airlie <airlied@...il.com>, Daniel Vetter
	<daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Harry Wentland <harry.wentland@....com>, Leo Li <sunpeng.li@....com>,
        Rodrigo
 Siqueira <Rodrigo.Siqueira@....com>,
        Mario Limonciello
	<mario.limonciello@....com>,
        Matt Hartley <matt.hartley@...il.com>,
        Kieran
 Levin <ktl@...mework.net>, Hans de Goede <hdegoede@...hat.com>
CC: <amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>, Dustin Howett <dustin@...ett.net>
Subject: Re: [PATCH v2 1/3] drm: Add panel backlight quirks

On 6/23/24 01:51, Thomas Weißschuh wrote:
> Panels using a PWM-controlled backlight source without an do not have a
> standard way to communicate their valid PWM ranges.
> On x86 the ranges are read from ACPI through driver-specific tables.
> The built-in ranges are not necessarily correct, or may grow stale if an
> older device can be retrofitted with newer panels.
> 
> Add a quirk infrastructure with which the valid backlight ranges can be
> maintained as part of the kernel.
> 
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
> ---
...

> +EXPORT_SYMBOL(drm_get_panel_backlight_quirk);
> +
> +MODULE_LICENSE("GPL");

Missing a MODULE_DESCRIPTION()

This will result in a make W=1 warning