From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753360AbdJRN5G (ORCPT ); Wed, 18 Oct 2017 09:57:06 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:49189 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752984AbdJRN5D (ORCPT ); Wed, 18 Oct 2017 09:57:03 -0400 Date: Wed, 18 Oct 2017 15:56:56 +0200 From: Pavel Machek To: Tony Lindgren Cc: "H. Nikolaus Schaller" , Sebastian Reichel , pali.rohar@gmail.com, sre@kernel.org, kernel list , linux-arm-kernel , linux-omap@vger.kernel.org, khilman@kernel.org, aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com, patrikbachan@gmail.com, serge@hallyn.com, abcloriens@gmail.com, clayton@craftyguy.net, martijn@brixit.nl, sakari.ailus@linux.intel.com, Marek Belisko , robh+dt@kernel.org, linux-pm@vger.kernel.org, Marek Belisko Subject: Re: libbattery was Re: [RFC PATCH 5/5] power: generic-adc-battery: Add capacity handling Message-ID: <20171018135656.GA26432@amd> References: <1501620926-22669-1-git-send-email-marek.belisko@open-nandra.com> <1501620926-22669-6-git-send-email-marek.belisko@open-nandra.com> <20170829101147.debhadzyfrxhkrvt@earth> <20170908113231.GJ18365@amd> <20171018122804.GA14376@amd> <61BFA8AF-657A-4AD7-A7AC-3E5DC3B7E83D@goldelico.com> <20171018132204.GD4394@atomide.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="lrZ03NoBR/3+SXJZ" Content-Disposition: inline In-Reply-To: <20171018132204.GD4394@atomide.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --lrZ03NoBR/3+SXJZ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed 2017-10-18 06:22:04, Tony Lindgren wrote: > * H. Nikolaus Schaller [171018 05:49]: > > > Am 18.10.2017 um 14:28 schrieb Pavel Machek : > > >=20 > > > So I started something, it is at. > > >=20 > > > https://github.com/pavelmachek/libbattery > > >=20 > > > My battery on n900 is currently uncalibrated (and charging), still it > > > gets some kind of estimation: > > >=20 > > > Battery -1 % > > > Seconds -1 > > > State 1 > > > Voltage 3.88 V > > > Battery 63 % > > >=20 > > > Of course, there's a lot more work to be done. > >=20 > > Nice start but not a solution to our problem. > >=20 > > Our problem is that people simply expect that for example https://packa= ges.debian.org/wheezy/xfce/xfce4-battery-plugin > > displays the battery percentage. >=20 > I think we could make things compatible with various battery apps by > having libbattery write back the capacity percentage and time remaining > to the kernel driver via sysfs or a dev entry. Then the kernel interface > can just display the data to whatever apps. Hmm. This could be as simple as providing symlink from /sys/class/power/userland-battery to some place writable by userspace... Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --lrZ03NoBR/3+SXJZ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlnnXagACgkQMOfwapXb+vK3AACeOhQsqDTlycUnAeskZZ97rsPp 390AoLKgJoZzWG7sYl6c+fJuC3pldRuD =Ks5W -----END PGP SIGNATURE----- --lrZ03NoBR/3+SXJZ-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: pavel@ucw.cz (Pavel Machek) Date: Wed, 18 Oct 2017 15:56:56 +0200 Subject: libbattery was Re: [RFC PATCH 5/5] power: generic-adc-battery: Add capacity handling In-Reply-To: <20171018132204.GD4394@atomide.com> References: <1501620926-22669-1-git-send-email-marek.belisko@open-nandra.com> <1501620926-22669-6-git-send-email-marek.belisko@open-nandra.com> <20170829101147.debhadzyfrxhkrvt@earth> <20170908113231.GJ18365@amd> <20171018122804.GA14376@amd> <61BFA8AF-657A-4AD7-A7AC-3E5DC3B7E83D@goldelico.com> <20171018132204.GD4394@atomide.com> Message-ID: <20171018135656.GA26432@amd> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed 2017-10-18 06:22:04, Tony Lindgren wrote: > * H. Nikolaus Schaller [171018 05:49]: > > > Am 18.10.2017 um 14:28 schrieb Pavel Machek : > > > > > > So I started something, it is at. > > > > > > https://github.com/pavelmachek/libbattery > > > > > > My battery on n900 is currently uncalibrated (and charging), still it > > > gets some kind of estimation: > > > > > > Battery -1 % > > > Seconds -1 > > > State 1 > > > Voltage 3.88 V > > > Battery 63 % > > > > > > Of course, there's a lot more work to be done. > > > > Nice start but not a solution to our problem. > > > > Our problem is that people simply expect that for example https://packages.debian.org/wheezy/xfce/xfce4-battery-plugin > > displays the battery percentage. > > I think we could make things compatible with various battery apps by > having libbattery write back the capacity percentage and time remaining > to the kernel driver via sysfs or a dev entry. Then the kernel interface > can just display the data to whatever apps. Hmm. This could be as simple as providing symlink from /sys/class/power/userland-battery to some place writable by userspace... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 181 bytes Desc: Digital signature URL: