From patchwork Wed Aug 16 10:42:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 13354971 X-Patchwork-Delegate: kw@linux.com 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F8F1C001B0 for ; Wed, 16 Aug 2023 10:44:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234289AbjHPKn7 (ORCPT ); Wed, 16 Aug 2023 06:43:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243943AbjHPKnb (ORCPT ); Wed, 16 Aug 2023 06:43:31 -0400 Received: from mail.zeus03.de (www.zeus03.de [194.117.254.33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6EBA5211E for ; Wed, 16 Aug 2023 03:43:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; s=k1; bh=JT/ceu3tRi/TtP6bujmqfafQ7JcoYnXeX4PGLaTdLSE=; b=ZE4bWY xzImjPSE/fGTZArxDGKK/We1LyxUywLQ0RHkLRfA8V86IN11mT6uCdr9OBdHqnrn iP6l8i9nSizrUfV4Rqud/S+uZLEi9+Gyd1mz3oJFKN2iA7/RmNiFE0YXZp63UrVm bxCAiSU/fjtTT1y7NjJbB8JitoC5i0Hy0WFWaYJgAuI2inCrwqm2j2Qz5p+o2Res 8j1QazF/rq1tMtSBEScX6vpdnzFGHcbTRgj+5zN1QPsuMONR/znfd8jLpAVapMDh y4cS9ZImugHHyeRAbbMY6I1hVDWhh1twGur3KNIi6gJMIlnBsmRgUhRRZFPpm8PX PmHGQOCFoHioaf3A== Received: (qmail 102039 invoked from network); 16 Aug 2023 12:43:10 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 16 Aug 2023 12:43:10 +0200 X-UD-Smtp-Session: l3s3148p1@PlM19gcDUr0gAwDPXy5qAJ1huuy56R1W From: Wolfram Sang To: linux-renesas-soc@vger.kernel.org Cc: Wolfram Sang , Geert Uytterhoeven , Marek Vasut , Yoshihiro Shimoda , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Bjorn Helgaas , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 2/2] PCI: rcar-host: add support for optional regulators Date: Wed, 16 Aug 2023 12:42:50 +0200 Message-Id: <20230816104251.19744-3-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230816104251.19744-1-wsa+renesas@sang-engineering.com> References: <20230816104251.19744-1-wsa+renesas@sang-engineering.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The KingFisher board has regulators for miniPCIe, so enable these optional regulators using devm. devm will automatically disable them when the driver releases the device. Order variables in reverse-xmas while we are here. Signed-off-by: Wolfram Sang Reviewed-by: Geert Uytterhoeven Acked-by: Manivannan Sadhasivam --- drivers/pci/controller/pcie-rcar-host.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/pcie-rcar-host.c b/drivers/pci/controller/pcie-rcar-host.c index 88975e40ee2f..7aecc114af4f 100644 --- a/drivers/pci/controller/pcie-rcar-host.c +++ b/drivers/pci/controller/pcie-rcar-host.c @@ -29,6 +29,7 @@ #include #include #include +#include #include "pcie-rcar.h" @@ -953,14 +954,20 @@ static const struct of_device_id rcar_pcie_of_match[] = { {}, }; +/* Design note 346 from Linear Technology says order is not important */ +static const char * const rcar_pcie_supplies[] = { + "vpcie12v", "vpcie3v3", "vpcie1v5" +}; + static int rcar_pcie_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + struct pci_host_bridge *bridge; struct rcar_pcie_host *host; struct rcar_pcie *pcie; + unsigned int i; u32 data; int err; - struct pci_host_bridge *bridge; bridge = devm_pci_alloc_host_bridge(dev, sizeof(*host)); if (!bridge) @@ -971,6 +978,13 @@ static int rcar_pcie_probe(struct platform_device *pdev) pcie->dev = dev; platform_set_drvdata(pdev, host); + for (i = 0; i < ARRAY_SIZE(rcar_pcie_supplies); i++) { + err = devm_regulator_get_enable_optional(dev, rcar_pcie_supplies[i]); + if (err < 0 && err != -ENODEV) + return dev_err_probe(dev, err, "can't enable regulator %s\n", + rcar_pcie_supplies[i]); + } + pm_runtime_enable(pcie->dev); err = pm_runtime_get_sync(pcie->dev); if (err < 0) {