From patchwork Fri Jun 21 14:45:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Zabel X-Patchwork-Id: 13707720 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id A31BBC27C4F for ; Fri, 21 Jun 2024 14:45:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To: Content-Transfer-Encoding:Content-Type:MIME-Version:Message-Id:Date:Subject: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Km1YA+3HFKLGPXVM7kXtuo3fsiB7J9F/3+UumpC9EKw=; b=OXukRxJCd3idBz uUwVkb/Eiuwp3hrMNRu9YBzh0DH4xy63kt59NlHVM6NIcKbcxutJ/+MYMjcjXimSqk8JsGLDBLGkc +48atg5k3o81KAQxgT3q/RrODl6oy2IGVZIg48S93vpuspaFv63vzl9iX1cZSYaQIiEdGtOTON5zw LB7AhoWMUsmp8/aDbicG0emWMQtJRJn2r1f/yoGISMOQISh6XD13Tz1BfaY5Z9BQGJYrJLu/sERPa yJ4OV+j58ZoHsv25ewsBDtC8TUAIjPpPdfrmIfL+sCyjyh/UGHQFhZEQJlEsUV56gYWWrMjJX0Png K1Zwq0szs1ffiBbvlJsw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sKfVu-00000009ZDI-2UtM; Fri, 21 Jun 2024 14:45:18 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sKfVp-00000009ZAQ-2Q8Q for linux-arm-kernel@lists.infradead.org; Fri, 21 Jun 2024 14:45:16 +0000 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1sKfVn-0004LC-Ar; Fri, 21 Jun 2024 16:45:11 +0200 From: Philipp Zabel Subject: [PATCH RFC 0/3] reset: Requesting pre-deasserted, auto-reasserting reset controls via devres Date: Fri, 21 Jun 2024 16:45:01 +0200 Message-Id: <20240621-reset-get-deasserted-v1-0-94ee76fb7b7d@pengutronix.de> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAO2RdWYC/x2MPQqFMBAGryJbG0iCf7xW8AC2YhHMp27jk6yII N7dxWKKKWZuEiSG0C+7KeFk4f+m4vKMpjVsCwxHdfLWF7byziQIDrMoEUG0PhBN6ZoyNChCbSv SdE+Y+fq2A/VdS+PzvPzQ5cprAAAA To: Kunihiko Hayashi , Masami Hiramatsu , Lad Prabhakar , Geert Uytterhoeven , =?utf-8?q?Uwe_Kleine-K=C3=B6?= =?utf-8?q?nig?= Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, Philipp Zabel X-Mailer: b4 0.14-dev X-SA-Exim-Connect-IP: 2a0a:edc0:0:1101:1d::54 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240621_074513_708738_ED88C2E0 X-CRM114-Status: UNSURE ( 7.01 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org There is a recurring pattern of drivers requesting a reset control and deasserting the reset during probe, followed by registering a reset assertion via devm_add_action_or_reset(). We can simplify this by providing devm_reset_control_get_*_deasserted() helpers that return an already deasserted reset control, similarly to devm_clk_get_enabled(). This doesn't remove a lot of boilerplate at each instance, but there are quite a few of them now. regards Philipp Signed-off-by: Philipp Zabel --- Philipp Zabel (3): reset: replace boolean parameters with flags parameter reset: Add devres helpers to request pre-deasserted reset controls reset: uniphier-glue: Use devm_reset_control_bulk_get_shared_deasserted() drivers/reset/core.c | 103 ++++++++++---- drivers/reset/reset-uniphier-glue.c | 24 +--- include/linux/reset.h | 274 ++++++++++++++++++++++++++++-------- 3 files changed, 289 insertions(+), 112 deletions(-) --- base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 change-id: 20240621-reset-get-deasserted-5185a8e4a706 Best regards,