From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 50B7AC433EF for ; Wed, 4 May 2022 17:24:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=2r78nBgFGKF+XxZ93uyVDAGVf7bAP3PFhY1Od+qHDT8=; b=Hs3XS/yQpKTuCm NbXhFrVuexVLQq8fqXT1pjADbf/DmqVyb48NYFSifB9MvqY1t6mwMeKbMtXJjhP94Hvs/cV38Vadu wpaGfGP0WzkOKcRCmlPSR3xCWP94WjyW7iirmeZmfzNn/UAN4BwHB7hTyFtgq+zbsO4oU8gfJ4n58 2u3EeCsR5k4XrA3PcBviUijNENB9EAijXIE5ZxnPYNlnWSouuavkxAOyKHXYv0dYCyRyV6NzgQr+j jAqbcXvAANxBl1aj5bYgwlsNreRb+NCmVv0s9PAmVLoZwfm6pnkKFjKnMTfUNpdhNnYa+4lwPk6er VEkSV1OA+C8Ukc0UyYBA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nmIiS-00BwAA-Je; Wed, 04 May 2022 17:23:08 +0000 Received: from jabberwock.ucw.cz ([46.255.230.98]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nmIiO-00Bw5V-K9; Wed, 04 May 2022 17:23:06 +0000 Received: by jabberwock.ucw.cz (Postfix, from userid 1017) id 0F6411C0BA5; Wed, 4 May 2022 19:22:57 +0200 (CEST) Date: Wed, 4 May 2022 19:22:56 +0200 From: Pavel Machek To: Charles Mirabile Cc: linux-kernel@vger.kernel.org, Serge Schneider , Stefan Wahren , Nicolas Saenz Julienne , Mattias Brugger , linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, fedora-rpi@googlegroups.com, Miguel Ojeda , Daniel Bauman , Mwesigwa Guma , Joel Savitz Subject: Re: [PATCH v9 3/6] drivers/auxdisplay: sensehat: Raspberry Pi Sense HAT display driver Message-ID: <20220504172256.GA1623@bug> References: <20220419205158.28088-1-cmirabil@redhat.com> <20220419205158.28088-4-cmirabil@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220419205158.28088-4-cmirabil@redhat.com> User-Agent: Mutt/1.5.23 (2014-03-12) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220504_102304_828157_AEEECA09 X-CRM114-Status: UNSURE ( 8.04 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel