linux-kernel - Re: [PATCH v9 3/6] drivers/auxdisplay: sensehat: Raspberry Pi Sense HAT display driver

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Message-ID: <20220504172256.GA1623@bug>
Date:   Wed, 4 May 2022 19:22:56 +0200
From:   Pavel Machek <pavel@....cz>
To:     Charles Mirabile <cmirabil@...hat.com>
Cc:     linux-kernel@...r.kernel.org,
        Serge Schneider <serge@...pberrypi.org>,
        Stefan Wahren <stefan.wahren@...e.com>,
        Nicolas Saenz Julienne <nsaenzju@...hat.com>,
        Mattias Brugger <mbrugger@...e.com>,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, fedora-rpi@...glegroups.com,
        Miguel Ojeda <ojeda@...nel.org>,
        Daniel Bauman <dbauman@...hat.com>,
        Mwesigwa Guma <mguma@...hat.com>,
        Joel Savitz <jsavitz@...hat.com>
Subject: Re: [PATCH v9 3/6] drivers/auxdisplay: sensehat: Raspberry Pi Sense
 HAT display driver

Hi!

> This patch adds the driver for the 8x8 RGB LED matrix display
> on the Sense HAT. It appears as a character device named sense-hat
> in /dev/. That special file is 192 bytes large and contains 64
> RGB triplets (3 bytes each) one for each pixel in row major order.

Is that right interface? Should we treat it as a tiny framebuffer, instead?

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html