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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9CC24EB64DC for ; Mon, 10 Jul 2023 12:25:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229668AbjGJMZ3 (ORCPT ); Mon, 10 Jul 2023 08:25:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231433AbjGJMZ0 (ORCPT ); Mon, 10 Jul 2023 08:25:26 -0400 Received: from jabberwock.ucw.cz (jabberwock.ucw.cz [46.255.230.98]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 35196C7; Mon, 10 Jul 2023 05:25:25 -0700 (PDT) Received: by jabberwock.ucw.cz (Postfix, from userid 1017) id 9E6E01C0DE7; Mon, 10 Jul 2023 14:25:22 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ucw.cz; s=gen1; t=1688991922; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=curtjXJ4kh1o3mohtu+aJ/JbgLuBaXO5IEHSOZ/VY6Y=; b=ipCCBXeP6UgFbO0lrBtxzDHdRZxO/ZB/XNP6zbsIokZWNHaNlzsSmoAOXV+a9C9OeLH6zJ 2l/I+JoW0lYszs9Gsna+Kg2JmXdTGJoLk1kBeXWzkYiXbawZlU11OVbeFBWXDx2KyMZ2x9 03Ts3JrIsZtEybBZtZNuyyWqvpJw5cc= Date: Mon, 10 Jul 2023 14:25:22 +0200 From: Pavel Machek To: Nicolas Frattaroli Cc: linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Bulk LED API Message-ID: References: <5324811.I0CZgJUjXn@archbook> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="bDNwW0r18BQ1vT5m" Content-Disposition: inline In-Reply-To: <5324811.I0CZgJUjXn@archbook> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --bDNwW0r18BQ1vT5m Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > Beyond LED strips, LED matrices exist too. I'm not sure if those > would rather be best implemented as DRM panels instead however. >=20 > So here are my questions: >=20 > 1. Am I correct in my assumption that such an API currently does > not exist? >=20 > 2. Does mainline Linux care about addressable LED strips enough > to theoretically accept some of the concepts proposed in this > message, ignoring the fine details for now? Yes, matrices exist. I'd suggest treating them as DRM/FBDEV. If you have 1000 leds in a strip, it may make sense to treat them as 1000x1 display, too. Best regards, Pavel --=20 People of Russia, stop Putin before his war on Ukraine escalates. --bDNwW0r18BQ1vT5m Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQRPfPO7r0eAhk010v0w5/Bqldv68gUCZKv4sgAKCRAw5/Bqldv6 8rCTAKC41WnawvH9ecVuAQ5ugSkn7Gb3ewCgvsEAJT/Hh57Ig3dz63RkL5f1foc= =7/w8 -----END PGP SIGNATURE----- --bDNwW0r18BQ1vT5m--