linux-kernel - Implement per-key keyboard backlight as auxdisplay?

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Date:   Fri, 13 Oct 2023 16:54:38 +0200
From:   Werner Sembach <wse@...edocomputers.com>
To:     Pavel Machek <pavel@....cz>, ojeda@...nel.org
Cc:     Lee Jones <lee@...nel.org>, linux-kernel@...r.kernel.org,
        linux-leds@...r.kernel.org, linux-input@...r.kernel.org,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>
Subject: Implement per-key keyboard backlight as auxdisplay?

Hi,

coming from the leds mailing list I'm writing with Pavel how to best handle 
per-key RGB keyboards.

His suggestion was that it could be implemented as an aux display, but he also 
suggested that I ask first if this fits.

The specific keyboard RGB controller I want to implement takes 6*21 rgb values. 
However not every one is actually mapped to a physical key. e.g. the bottom row 
needs less entries because of the space bar. Additionally the keys are ofc not 
in a straight line from top to bottom.

Best regards,

Werner