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 AAB60C43441 for ; Thu, 22 Nov 2018 13:12:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7712F2081C for ; Thu, 22 Nov 2018 13:12:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7712F2081C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ucw.cz Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388571AbeKVXvg (ORCPT ); Thu, 22 Nov 2018 18:51:36 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:42987 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727034AbeKVXvf (ORCPT ); Thu, 22 Nov 2018 18:51:35 -0500 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id 6639F807A9; Thu, 22 Nov 2018 14:12:13 +0100 (CET) Date: Thu, 22 Nov 2018 14:12:16 +0100 From: Pavel Machek To: Takashi Iwai Cc: Ayman Bagabas , alsa-devel@alsa-project.org, Hui Wang , Andy Shevchenko , Darren Hart , Jaroslav Kysela , Kailang Yang , linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org Subject: Re: [PATCH v3 3/3] ALSA: hda: add support for Huawei WMI micmute LED Message-ID: <20181122131216.GA13339@amd> References: <20181108171701.4444-1-ayman.bagabas@gmail.com> <20181108171701.4444-4-ayman.bagabas@gmail.com> <20181119235713.GB7367@amd> <20181120091039.GA16916@amd> <20181120093610.GF16916@amd> <20181120115159.GG16916@amd> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="d6Gm4EdcadzBjdND" Content-Disposition: inline In-Reply-To: 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 --d6Gm4EdcadzBjdND Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue 2018-11-20 13:19:26, Takashi Iwai wrote: > On Tue, 20 Nov 2018 12:51:59 +0100, > Pavel Machek wrote: > >=20 > > Hi! > >=20 > > > > You have general-purpose LED, yet you are treating it as "something > > > > special". That means ugly code (quoted above) and lack of flexibili= ty. > > > >=20 > > > > For example, if my notebook lacks HDD LED, I can use scrollock LED = for > > > > that instead. Or, in reverse way, maybe "mic mute" LED is not useful > > > > for me, and I'd like to use it for notifications instead. > > >=20 > > > I'm not against adding the LEDs device implementation for any exotic > > > usage. > > >=20 > > > But for the audio mute LED features, you'll need really lots of other > > > works if it were implemented via leds device. That's the hardest > > > part, and a few lines of hooks solves it easily in the kernel side. > > > That's all about it. > > >=20 > > > If you are ready for submitting the real solutions in user-space side > > > (patching PulseAudio and whatever all existing sound daemons, and > > > creating yet another daemon for non-PA systems (another footprint, > > > lovely), and so on), we can happily delete such in-kernel hooks :) > >=20 > > I'm not saying we should move it to the userspace. > >=20 > > I'm saying this should be "normal" led. drivers/leds/led-huawei-acpi.c, > > or something. Perhaps this acpi stuff is so similar you don't really > > need .c code. > >=20 > > And then there should be a "mic muted" trigger. Similar to > > drivers/leds/trigger/ledtrig-disk.c. >=20 > And who will trigger this, e.g. when the mixer is muted? Same code that does it now. Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --d6Gm4EdcadzBjdND Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlv2qzAACgkQMOfwapXb+vLwoACeKq3VduycyIiw3wbuLotckmV6 b2IAn1VSvUMQE3tqN5RVxbjY1WyVfnCq =+D6u -----END PGP SIGNATURE----- --d6Gm4EdcadzBjdND--