From patchwork Mon Mar 4 15:35:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Thomas Richard X-Patchwork-Id: 13580771 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 0B849C54E55 for ; Mon, 4 Mar 2024 15:36:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=hf26KXBz5VMTvqAZGtN3UKGRsdrN1Dn8NqLGdiTQBik=; b=bI1sVV4OrJF0ih h2j37MzjUTtZJeC1x4ob7k22mozIefplOoR1/jKZaIZ+OUe3OZENU+PjW/fi6Tv4JZTztlpriz81h inofkUObNEyXVAWUVOKuxNY0MxQEv/Z9KBC8M5UAJvy2vHoafo/FONszhzW4J+L9Yrx/w3tRqATD/ OKcIw/xK9zcljwUUoiE3BRw7LFCVI1kcvpmeIArO3J2Uo41O0i08hU+fhrta8CNKYKAPWYBJCXdyk XcfresYy3PNoIowpdYIF9XyLzRB1dRyqVJSj5JbdwtZ+RzNpWC9TFFds38MxoF+i7nYoyoKmizxQh O9Yrji6tUZFvwJL5Rvzg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhAMo-00000009chE-1QUW; Mon, 04 Mar 2024 15:36:38 +0000 Received: from relay8-d.mail.gandi.net ([2001:4b98:dc4:8::228]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rhAMW-00000009cQe-2DB0; Mon, 04 Mar 2024 15:36:22 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id E36641BF213; Mon, 4 Mar 2024 15:36:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1709566578; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jPqUbSf1Qdf1yloJtVBeCvPFg+XlI7QIXeQdbRho+l4=; b=iljZMdmRr0tNgzJK8i8VPTg8h7bHYkCzTSkGwJIhjCEjBBcw7oLlZonEqBI98qgCUaw+A6 ciopRah50UFE4MW1Dps+6X2It29g3ZyxL6hGFdXVoyHdIvsNFx1ZAkz1bqSey3SNIITiDU 2krSea/emSeDeavgElkWrdNOpPrGFCsl/2uk2OfRJOj7uUrzi8TOIGrP4QbEPduhgghnCS Y/Z/84Ytj45cR87v+fcOvdTTRITU/dtO6tk5Hw2yhC6MX9Y089sUv1KVeZqBTtTnqsqhWn l5bX8RVeVQi1vSyJ3ZS6zB4Ls1pUrXO4WVL95vKKyFlgFUfGaUltUsngq64U8A== From: Thomas Richard Date: Mon, 04 Mar 2024 16:35:48 +0100 Subject: [PATCH v4 05/18] mux: mmio: add resume support MIME-Version: 1.0 Message-Id: <20240102-j7200-pcie-s2r-v4-5-6f1f53390c85@bootlin.com> References: <20240102-j7200-pcie-s2r-v4-0-6f1f53390c85@bootlin.com> In-Reply-To: <20240102-j7200-pcie-s2r-v4-0-6f1f53390c85@bootlin.com> To: Linus Walleij , Bartosz Golaszewski , Andy Shevchenko , Tony Lindgren , Haojian Zhuang , Vignesh R , Aaro Koskinen , Janusz Krzysztofik , Andi Shyti , Peter Rosin , Vinod Koul , Kishon Vijay Abraham I , Philipp Zabel , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Rob Herring , Bjorn Helgaas Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-i2c@vger.kernel.org, linux-phy@lists.infradead.org, linux-pci@vger.kernel.org, gregory.clement@bootlin.com, theo.lebrun@bootlin.com, thomas.petazzoni@bootlin.com, u-kumar1@ti.com, Thomas Richard X-Mailer: b4 0.12.0 X-GND-Sasl: thomas.richard@bootlin.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240304_073620_948314_A942AF2B X-CRM114-Status: GOOD ( 11.55 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org From: Théo Lebrun No need to save something during the suspend stage, as the mux core has an internal cache to store the state of muxes. This cache is used by mux_chip_resume() to restore all muxes. Signed-off-by: Théo Lebrun Signed-off-by: Thomas Richard --- drivers/mux/mmio.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/mux/mmio.c b/drivers/mux/mmio.c index 30a952c34365..00405abe3ce3 100644 --- a/drivers/mux/mmio.c +++ b/drivers/mux/mmio.c @@ -130,13 +130,25 @@ static int mux_mmio_probe(struct platform_device *pdev) mux_chip->ops = &mux_mmio_ops; + dev_set_drvdata(dev, mux_chip); + return devm_mux_chip_register(dev, mux_chip); } +static int mux_mmio_resume_noirq(struct device *dev) +{ + struct mux_chip *mux_chip = dev_get_drvdata(dev); + + return mux_chip_resume(mux_chip); +} + +static DEFINE_NOIRQ_DEV_PM_OPS(mux_mmio_pm_ops, NULL, mux_mmio_resume_noirq); + static struct platform_driver mux_mmio_driver = { .driver = { .name = "mmio-mux", .of_match_table = mux_mmio_dt_ids, + .pm = pm_sleep_ptr(&mux_mmio_pm_ops), }, .probe = mux_mmio_probe, };