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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 456D7C433DF for ; Sun, 7 Jun 2020 20:24:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C09A2067B for ; Sun, 7 Jun 2020 20:24:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726872AbgFGUYS (ORCPT ); Sun, 7 Jun 2020 16:24:18 -0400 Received: from jabberwock.ucw.cz ([46.255.230.98]:53638 "EHLO jabberwock.ucw.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726093AbgFGUYS (ORCPT ); Sun, 7 Jun 2020 16:24:18 -0400 Received: by jabberwock.ucw.cz (Postfix, from userid 1017) id 44C241C0BD2; Sun, 7 Jun 2020 22:24:15 +0200 (CEST) Date: Sun, 7 Jun 2020 22:24:14 +0200 From: Pavel Machek To: Andrzej Pietrasiewicz Cc: linux-pm@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-input@vger.kernel.org, linux-tegra@vger.kernel.org, patches@opensource.cirrus.com, ibm-acpi-devel@lists.sourceforge.net, platform-driver-x86@vger.kernel.org, "Rafael J . Wysocki" , Len Brown , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , Kukjin Kim , Krzysztof Kozlowski , Dmitry Torokhov , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Vladimir Zapolskiy , Sylvain Lemieux , Laxman Dewangan , Thierry Reding , Jonathan Hunter , Barry Song , Michael Hennerich , Nick Dyer , Hans de Goede , Ferruh Yigit , Sangwon Jee , Peter Hutterer , Henrique de Moraes Holschuh , kernel@collabora.com Subject: Re: [PATCH v3 0/7] Support inhibiting input devices Message-ID: <20200607202414.GB13138@amd> References: <20200604072853.GP89269@dtor-ws> <20200605173335.13753-1-andrzej.p@collabora.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="E39vaYmALEf/7YXx" Content-Disposition: inline In-Reply-To: <20200605173335.13753-1-andrzej.p@collabora.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org --E39vaYmALEf/7YXx Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri 2020-06-05 19:33:28, Andrzej Pietrasiewicz wrote: > Userspace might want to implement a policy to temporarily disregard input > from certain devices. Wow, you certainly cc a lot of lists. > An example use case is a convertible laptop, whose keyboard can be folded > under the screen to create tablet-like experience. The user then must hold > the laptop in such a way that it is difficult to avoid pressing the keybo= ard > keys. It is therefore desirable to temporarily disregard input from the > keyboard, until it is folded back. This obviously is a policy which should > be kept out of the kernel, but the kernel must provide suitable means to > implement such a policy. >=20 > Due to interactions with suspend/resume, a helper has been added for driv= ers > to decide if the device is being used or not (PATCH 1/7) and it has been > applied to relevant drivers (PATCH 2,4,5,6/7). But is that a right way to implement it? We want this for cellphones, too -- touchscreen should be disabled while the device is locked in the pocket -- but we really want the touchscreen hardware to be powered down in that case (because it keeps SoC busy and eats a _lot_ of electricity). But simplistic "receive an event and then drop it if device is inhibited" does not allow that... Best regards, Pavel =09 --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --E39vaYmALEf/7YXx Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAl7dTO4ACgkQMOfwapXb+vKNuACgw3cpx7Z15Nm3EAs8yyTuu1RS DsYAn1yorcZKMbA2oKpOoVakbRalRIie =Dt1J -----END PGP SIGNATURE----- --E39vaYmALEf/7YXx-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: [PATCH v3 0/7] Support inhibiting input devices Date: Sun, 7 Jun 2020 22:24:14 +0200 Message-ID: <20200607202414.GB13138@amd> References: <20200604072853.GP89269@dtor-ws> <20200605173335.13753-1-andrzej.p@collabora.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="E39vaYmALEf/7YXx" Return-path: Content-Disposition: inline In-Reply-To: <20200605173335.13753-1-andrzej.p-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Andrzej Pietrasiewicz Cc: linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, patches-yzvPICuk2AA4QjBA90+/kJqQE7yCjDx5@public.gmane.org, ibm-acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, platform-driver-x86-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, "Rafael J . Wysocki" , Len Brown , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , Kukjin Kim , Krzysztof Kozlowski , Dmitry Torokhov , Shawn Guo , Sascha Hauer List-Id: linux-tegra@vger.kernel.org --E39vaYmALEf/7YXx Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri 2020-06-05 19:33:28, Andrzej Pietrasiewicz wrote: > Userspace might want to implement a policy to temporarily disregard input > from certain devices. Wow, you certainly cc a lot of lists. > An example use case is a convertible laptop, whose keyboard can be folded > under the screen to create tablet-like experience. The user then must hold > the laptop in such a way that it is difficult to avoid pressing the keybo= ard > keys. It is therefore desirable to temporarily disregard input from the > keyboard, until it is folded back. This obviously is a policy which should > be kept out of the kernel, but the kernel must provide suitable means to > implement such a policy. >=20 > Due to interactions with suspend/resume, a helper has been added for driv= ers > to decide if the device is being used or not (PATCH 1/7) and it has been > applied to relevant drivers (PATCH 2,4,5,6/7). But is that a right way to implement it? We want this for cellphones, too -- touchscreen should be disabled while the device is locked in the pocket -- but we really want the touchscreen hardware to be powered down in that case (because it keeps SoC busy and eats a _lot_ of electricity). But simplistic "receive an event and then drop it if device is inhibited" does not allow that... Best regards, Pavel =09 --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --E39vaYmALEf/7YXx Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAl7dTO4ACgkQMOfwapXb+vKNuACgw3cpx7Z15Nm3EAs8yyTuu1RS DsYAn1yorcZKMbA2oKpOoVakbRalRIie =Dt1J -----END PGP SIGNATURE----- --E39vaYmALEf/7YXx-- 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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,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 A1954C433DF for ; Sun, 7 Jun 2020 20:24:34 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 71E3E2067B for ; Sun, 7 Jun 2020 20:24:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="PNPFqyh5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 71E3E2067B 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-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Content-Type:Cc: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=k5zRhWeulaxkoooNnWQCmAWhb4TrD57y+To82In5+UY=; b=PNPFqyh59SusQyhIxMh0a/m5G qzH3jtXJ9uF6ya/ejsSPMvDU0CitsQhQHLAHawKBbldFzmggvJdx/4oB1a3MosCIwVnMUA6Wr5IVB 19kbJe2P7Dqlze0jsskJqzfj2bQIh4jX1I4UBULgggFL3Ubm2hSyJJ21rQHwN/e4AfwMOO7LEGljL zdKLsFJ6L1aVSqq7tQJ81P6QFBsSWmq1yicBZrISAg37FIK2A3+S/uYSA88h7I2hF16vm43Fm5CUY iH13XUZ8dJCX+KvyWuf1AmGy+oEmcs12NQGLvMQEm1AAIeXM9In0RdSDlI0PXmL2HXpDgAB0jMwJd RYKCuWL6w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ji1qE-0000rs-5o; Sun, 07 Jun 2020 20:24:26 +0000 Received: from jabberwock.ucw.cz ([46.255.230.98]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ji1qA-0000qh-Eb for linux-arm-kernel@lists.infradead.org; Sun, 07 Jun 2020 20:24:24 +0000 Received: by jabberwock.ucw.cz (Postfix, from userid 1017) id 44C241C0BD2; Sun, 7 Jun 2020 22:24:15 +0200 (CEST) Date: Sun, 7 Jun 2020 22:24:14 +0200 From: Pavel Machek To: Andrzej Pietrasiewicz Subject: Re: [PATCH v3 0/7] Support inhibiting input devices Message-ID: <20200607202414.GB13138@amd> References: <20200604072853.GP89269@dtor-ws> <20200605173335.13753-1-andrzej.p@collabora.com> MIME-Version: 1.0 In-Reply-To: <20200605173335.13753-1-andrzej.p@collabora.com> User-Agent: Mutt/1.5.23 (2014-03-12) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200607_132422_641632_3A9727EE X-CRM114-Status: GOOD ( 14.40 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel@collabora.com, Nick Dyer , linux-iio@vger.kernel.org, platform-driver-x86@vger.kernel.org, ibm-acpi-devel@lists.sourceforge.net, Laxman Dewangan , Peter Meerwald-Stadler , Peter Hutterer , Fabio Estevam , linux-samsung-soc@vger.kernel.org, Krzysztof Kozlowski , Jonathan Hunter , linux-acpi@vger.kernel.org, Kukjin Kim , NXP Linux Team , linux-input@vger.kernel.org, Len Brown , Michael Hennerich , linux-pm@vger.kernel.org, Sascha Hauer , Sylvain Lemieux , Henrique de Moraes Holschuh , Vladimir Zapolskiy , Hans de Goede , Lars-Peter Clausen , linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Barry Song , Ferruh Yigit , patches@opensource.cirrus.com, Dmitry Torokhov , "Rafael J . Wysocki" , linux-kernel@vger.kernel.org, Thierry Reding , Sangwon Jee , Pengutronix Kernel Team , Hartmut Knaack , Shawn Guo , Jonathan Cameron Content-Type: multipart/mixed; boundary="===============4989022709045505010==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============4989022709045505010== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="E39vaYmALEf/7YXx" Content-Disposition: inline --E39vaYmALEf/7YXx Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri 2020-06-05 19:33:28, Andrzej Pietrasiewicz wrote: > Userspace might want to implement a policy to temporarily disregard input > from certain devices. Wow, you certainly cc a lot of lists. > An example use case is a convertible laptop, whose keyboard can be folded > under the screen to create tablet-like experience. The user then must hold > the laptop in such a way that it is difficult to avoid pressing the keybo= ard > keys. It is therefore desirable to temporarily disregard input from the > keyboard, until it is folded back. This obviously is a policy which should > be kept out of the kernel, but the kernel must provide suitable means to > implement such a policy. >=20 > Due to interactions with suspend/resume, a helper has been added for driv= ers > to decide if the device is being used or not (PATCH 1/7) and it has been > applied to relevant drivers (PATCH 2,4,5,6/7). But is that a right way to implement it? We want this for cellphones, too -- touchscreen should be disabled while the device is locked in the pocket -- but we really want the touchscreen hardware to be powered down in that case (because it keeps SoC busy and eats a _lot_ of electricity). But simplistic "receive an event and then drop it if device is inhibited" does not allow that... Best regards, Pavel =09 --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --E39vaYmALEf/7YXx Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAl7dTO4ACgkQMOfwapXb+vKNuACgw3cpx7Z15Nm3EAs8yyTuu1RS DsYAn1yorcZKMbA2oKpOoVakbRalRIie =Dt1J -----END PGP SIGNATURE----- --E39vaYmALEf/7YXx-- --===============4989022709045505010== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============4989022709045505010==--