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 X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99811C35DF5 for ; Tue, 25 Feb 2020 10:19:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C08121556 for ; Tue, 25 Feb 2020 10:19:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730086AbgBYKTi (ORCPT ); Tue, 25 Feb 2020 05:19:38 -0500 Received: from jabberwock.ucw.cz ([46.255.230.98]:37870 "EHLO jabberwock.ucw.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728958AbgBYKTi (ORCPT ); Tue, 25 Feb 2020 05:19:38 -0500 Received: by jabberwock.ucw.cz (Postfix, from userid 1017) id 2897A1C0411; Tue, 25 Feb 2020 11:19:36 +0100 (CET) Date: Tue, 25 Feb 2020 11:19:35 +0100 From: Pavel Machek To: Guido =?iso-8859-1?Q?G=FCnther?= Cc: Jacek Anaszewski , Dan Murphy , Rob Herring , Mark Rutland , linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 0/9] leds: lm3692x: Allow to set ovp and brigthness mode Message-ID: <20200225101935.GA16252@amd> References: <20200105234708.GA7598@amd> <20200106094443.GB13043@bogon.m.sigxcpu.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="bg08WKrSYDhXBjb5" Content-Disposition: inline In-Reply-To: <20200106094443.GB13043@bogon.m.sigxcpu.org> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-leds-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org --bg08WKrSYDhXBjb5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > > > Patches are against next-20191220. > >=20 > > I applied everything but the "exponential" changes and the last > > one. I'll apply the last one if I get version that applies on top of > > leds tree. >=20 > Thanks! Can I do anything to get the exponential part in? Is it because > you want the exponential mode to move to the backlight binding? You'd have to do some serious convincing, explaining why we absolutely need the exponential stuff. Most devices today use linear brightness, and userspace needs to know the relation, especially for RGB stuff. You can set bigger max-brightness, and then do in-driver conversion to use full dynamic brightness range...? Best regards, Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --bg08WKrSYDhXBjb5 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAl5U9LcACgkQMOfwapXb+vKmQwCeMlzPn+Eem1SMNkD3mahWvCZt NMAAn0xlajNgoP4SO6bIQu8nJ4+2vhUo =oqTC -----END PGP SIGNATURE----- --bg08WKrSYDhXBjb5--