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[147.75.48.161]) by mx.google.com with ESMTPS id n16-20020a170903111000b001d3177065acsi17364124plh.229.2023.12.20.02.40.48 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Dec 2023 02:40:49 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-6747-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) client-ip=147.75.48.161; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel+bounces-6747-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) smtp.mailfrom="linux-kernel+bounces-6747-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sy.mirrors.kernel.org (Postfix) with ESMTPS id 40E4FB267EE for ; Wed, 20 Dec 2023 10:32:15 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 71E9F208CE; Wed, 20 Dec 2023 10:32:10 +0000 (UTC) X-Original-To: linux-kernel@vger.kernel.org Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1EB92208D3 for ; Wed, 20 Dec 2023 10:32:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rFtrm-0002Pj-A4; Wed, 20 Dec 2023 11:31:54 +0100 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1rFtrk-000Drv-K9; Wed, 20 Dec 2023 11:31:53 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1rFtrl-000iCd-E0; Wed, 20 Dec 2023 11:31:53 +0100 Date: Wed, 20 Dec 2023 11:31:53 +0100 From: Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= To: Sean Young Cc: linux-media@vger.kernel.org, linux-pwm@vger.kernel.org, Ivaylo Dimitrov , Thierry Reding , Jonathan Corbet , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v10 4/6] pwm: Make it possible to apply PWM changes in atomic context Message-ID: References: <2a08b7876059f30c5c081d02978876022fa8d3ea.1703003288.git.sean@mess.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="n6whed34x4el76dp" Content-Disposition: inline In-Reply-To: <2a08b7876059f30c5c081d02978876022fa8d3ea.1703003288.git.sean@mess.org> X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org --n6whed34x4el76dp Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Dec 19, 2023 at 04:30:27PM +0000, Sean Young wrote: > Some PWM devices require sleeping, for example if the pwm device is > connected over I2C. However, many PWM devices could be used from atomic > context, e.g. memory mapped PWM. This is useful for, for example, the > pwm-ir-tx driver which requires precise timing. Sleeping causes havoc > with the generated IR signal. >=20 > Since not all PWM devices can support atomic context, we also add a > pwm_might_sleep() function to check if is not supported. >=20 > Signed-off-by: Sean Young Reviewed-by: Uwe Kleine-K=F6nig --=20 Pengutronix e.K. | Uwe Kleine-K=F6nig | Industrial Linux Solutions | https://www.pengutronix.de/ | --n6whed34x4el76dp Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEP4GsaTp6HlmJrf7Tj4D7WH0S/k4FAmWCwpgACgkQj4D7WH0S /k6sMwgAsQlMB6EtDqYSV0EFHHcQHu8UVellCdbOyq8BbGsnDbOrbQ/q6+Xh27L0 4yZiwLJaLp7GjTimL495d4oBPkXFXGv0TTnfSF1IjU4jLwCoBDMP+Tf/LhdtkBh8 sXbAcOCYqmtsaZrq54zZSDJSVMSbL45rZHtQpETA2SUTxKXW9ko1C9+eZAeMiswa 0lnCvtujqkPFyM34n/U0F1EoMUPJomGQ/Q5wgOooh60YaF+SvYYzXi/2B4B8U/Mi tqr+8kFbgSMgWrq5A6mAqOLgdInXQY/6JuxpolfFK8gyhdCmH1nNJLnBsxkcZO++ KIbYMF6gYo7UaMtFuFO5hQn8pJDdQw== =MP6p -----END PGP SIGNATURE----- --n6whed34x4el76dp--