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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 12E9FC433E0 for ; Tue, 19 May 2020 20:35:46 +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 D35E12072C for ; Tue, 19 May 2020 20:35:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="bmRnmBaH"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="BU/nji5f" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D35E12072C Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=broadcom.com 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-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=UUx+2TTeUD1h+FacsVERvEKalw/tyK0iFyugczRLtvc=; b=bmRnmBaH38fBjWoEpMOBC7ixVt w2Kxky3o2E3a2qow4mNHYkXdbFjqgaJT47ZGqwc5lPK0MuBzYq6/fjZvc9yxYs+yA4wO9nesS9WO9 ALstOQsc0iR1Ce6J4CrEW8yT5PPuUpzyONcrGFN/fImU1tOmPKQGPyF1K+/EmvJ4xd+hzC75vQ0Z1 i3JGn7cROYAECe3uth9pHaKkLE8YfJ6n82RtaDgsDnhOHwJ09eqUdHIU9jQKr4wgPo68sQuYyJsdB ctQPaf3QWOhdyKj26m1RXkzktggxUlXjRHif5wqg9gO/Km4qPELpO14uwesNwGR7Hp0hB5yHEd+I/ PrWZ4H/Q==; 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 1jb8xj-0002XW-7k; Tue, 19 May 2020 20:35:43 +0000 Received: from rnd-relay.smtp.broadcom.com ([192.19.229.170]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jb8ww-0007wI-9f; Tue, 19 May 2020 20:34:56 +0000 Received: from mail-irv-17.broadcom.com (mail-irv-17.lvn.broadcom.net [10.75.242.48]) by rnd-relay.smtp.broadcom.com (Postfix) with ESMTP id 141FD30D648; Tue, 19 May 2020 13:33:29 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.10.3 rnd-relay.smtp.broadcom.com 141FD30D648 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=broadcom.com; s=dkimrelay; t=1589920409; bh=UyoqqGo1D4jVTiHXaSkn4arGidmJGLFdMWKH3sQlBYw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BU/nji5fXvfof8GIii3uZh/oVDoLJG1BaCMzzhtWfPNXWfGBVAO4J2MyH+pVqTySu mNyQmER8FETLGGJ5o/n8B7yvTAiKTndwD9wbsIdOdkNACdMJVFy9saT668JpnB3L0O o110i9gly2AuBQDpcePbdf+nSs+bA1ja7kmt6+pc= Received: from stbsrv-and-01.and.broadcom.net (stbsrv-and-01.and.broadcom.net [10.28.16.211]) by mail-irv-17.broadcom.com (Postfix) with ESMTP id 1E0F6140069; Tue, 19 May 2020 13:34:50 -0700 (PDT) From: Jim Quinlan To: james.quinlan@broadcom.com, Nicolas Saenz Julienne Subject: [PATCH 05/15] PCI: brcmstb: Add suspend and resume pm_ops Date: Tue, 19 May 2020 16:34:03 -0400 Message-Id: <20200519203419.12369-6-james.quinlan@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200519203419.12369-1-james.quinlan@broadcom.com> References: <20200519203419.12369-1-james.quinlan@broadcom.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200519_133454_373400_ADA17D88 X-CRM114-Status: GOOD ( 10.09 ) 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: Rob Herring , Lorenzo Pieralisi , "open list:PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS" , open list , Florian Fainelli , "maintainer:BROADCOM BCM7XXX ARM ARCHITECTURE" , "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" , Jim Quinlan , Bjorn Helgaas , "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Jim Quinlan Broadcom Set-top (BrcmSTB) boards typically support S2, S3, and S5 suspend and resume. This commit enables the PCIe driver to do so. Signed-off-by: Jim Quinlan --- drivers/pci/controller/pcie-brcmstb.c | 49 +++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index c1cf4ea7d3d9..39993203b991 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -972,6 +972,49 @@ static void brcm_pcie_turn_off(struct brcm_pcie *pcie) brcm_pcie_bridge_sw_init_set(pcie, 1); } +static int brcm_pcie_suspend(struct device *dev) +{ + struct brcm_pcie *pcie = dev_get_drvdata(dev); + int ret = 0; + + brcm_pcie_turn_off(pcie); + clk_disable_unprepare(pcie->clk); + + return ret; +} + +static int brcm_pcie_resume(struct device *dev) +{ + struct brcm_pcie *pcie = dev_get_drvdata(dev); + void __iomem *base; + u32 tmp; + int ret; + + base = pcie->base; + clk_prepare_enable(pcie->clk); + + /* Take bridge out of reset so we can access the SERDES reg */ + brcm_pcie_bridge_sw_init_set(pcie, 0); + + /* SERDES_IDDQ = 0 */ + tmp = readl(base + PCIE_MISC_HARD_PCIE_HARD_DEBUG); + u32p_replace_bits(&tmp, 0, + PCIE_MISC_HARD_PCIE_HARD_DEBUG_SERDES_IDDQ_MASK); + writel(tmp, base + PCIE_MISC_HARD_PCIE_HARD_DEBUG); + + /* wait for serdes to be stable */ + udelay(100); + + ret = brcm_pcie_setup(pcie); + if (ret) + return ret; + + if (pcie->msi) + brcm_msi_set_regs(pcie->msi); + + return 0; +} + static void __brcm_pcie_remove(struct brcm_pcie *pcie) { brcm_msi_remove(pcie); @@ -1090,12 +1133,18 @@ static int brcm_pcie_probe(struct platform_device *pdev) MODULE_DEVICE_TABLE(of, brcm_pcie_match); +static const struct dev_pm_ops brcm_pcie_pm_ops = { + .suspend_noirq = brcm_pcie_suspend, + .resume_noirq = brcm_pcie_resume, +}; + static struct platform_driver brcm_pcie_driver = { .probe = brcm_pcie_probe, .remove = brcm_pcie_remove, .driver = { .name = "brcm-pcie", .of_match_table = brcm_pcie_match, + .pm = &brcm_pcie_pm_ops, }, }; module_platform_driver(brcm_pcie_driver); -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel