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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 0540DC43387 for ; Wed, 19 Dec 2018 20:10:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CE7F020811 for ; Wed, 19 Dec 2018 20:10:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729719AbeLSUKu (ORCPT ); Wed, 19 Dec 2018 15:10:50 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:52410 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728479AbeLSUKu (ORCPT ); Wed, 19 Dec 2018 15:10:50 -0500 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id 720B080A8C; Wed, 19 Dec 2018 21:10:43 +0100 (CET) Date: Wed, 19 Dec 2018 21:10:47 +0100 From: Pavel Machek To: Dan Murphy Cc: robh+dt@kernel.org, jacek.anaszewski@gmail.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org Subject: Re: [PATCH 2/2] leds: lp5024: Add the LP5024/18 RGB LED driver Message-ID: <20181219201047.GA23448@amd> References: <20181219162626.12297-1-dmurphy@ti.com> <20181219162626.12297-3-dmurphy@ti.com> <20181219193455.GA21159@amd> <8740cfd6-a6b5-ad27-313b-984a9febf18a@ti.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="OgqxwSJOaUobr8KG" Content-Disposition: inline In-Reply-To: <8740cfd6-a6b5-ad27-313b-984a9febf18a@ti.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --OgqxwSJOaUobr8KG Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed 2018-12-19 13:41:18, Dan Murphy wrote: > Pavel >=20 > Thanks for the review. >=20 > On 12/19/2018 01:34 PM, Pavel Machek wrote: > > Hi! > >=20 > >> +static DEVICE_ATTR_WO(ctrl_bank_a_mix); > >> +static DEVICE_ATTR_WO(ctrl_bank_b_mix); > >> +static DEVICE_ATTR_WO(ctrl_bank_c_mix); > >> + > >> +static struct attribute *lp5024_ctrl_bank_attrs[] =3D { > >> + &dev_attr_ctrl_bank_a_mix.attr, > >> + &dev_attr_ctrl_bank_b_mix.attr, > >> + &dev_attr_ctrl_bank_c_mix.attr, > >> + NULL > >> +}; > >> +ATTRIBUTE_GROUPS(lp5024_ctrl_bank); > >=20 > > ... > >> + > >> +static DEVICE_ATTR_WO(led1_mix); > >> +static DEVICE_ATTR_WO(led2_mix); > >> +static DEVICE_ATTR_WO(led3_mix); > >> + > >> +static struct attribute *lp5024_led_independent_attrs[] =3D { > >> + &dev_attr_led1_mix.attr, > >> + &dev_attr_led2_mix.attr, > >> + &dev_attr_led3_mix.attr, > >> + NULL > >> +}; > >> +ATTRIBUTE_GROUPS(lp5024_led_independent); > >=20 > > Ok, so you are adding new sysfs files. Are they _really_ neccessary? > > We'd like to have uniform interfaces for the leds. >=20 > Yes I am adding these for this driver. > They adjust the individual brightness of each LED connected (what the HW = guys called mixing). >=20 > The standard brightness sysfs adjusts all 3 LEDs simultaneously so that a= ll 3 LEDs brightness are > uniform. 1 LED, 1 brightness file... that's what we do. Why should this one be diffe= rent? > I did not think these belonged in the dt as they should be user space con= figurable >=20 > >=20 > > If they are neccessary, we need documentation for them. >=20 > Sure I have no problem documenting them but where do I do that? > I am assuming Documentation/leds/leds-lp5024.txt Documentation/abi/... Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --OgqxwSJOaUobr8KG Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlwapccACgkQMOfwapXb+vKbmACfdrR6iMX5b7SewUD8Q44amTHK TQUAnieGmLLgxm7S3o05Eg8KzrAOxw5j =mBmG -----END PGP SIGNATURE----- --OgqxwSJOaUobr8KG--