From patchwork Fri Aug 21 03:53:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rob Herring (Arm)" X-Patchwork-Id: 11727729 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 827BC14F6 for ; Fri, 21 Aug 2020 03:55:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6A3D820714 for ; Fri, 21 Aug 2020 03:55:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597982142; bh=ImRUZx6HF2aQBQ+1jT9HtjVvrFZJFWf7HAtjs4n2naM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=T337z1vO3URDdkyLiEtMGOWmdK25ZXyFzt+rTNIGXICzf29B/FrRLWJLiamYFT5H0 lFP4Y1qfGXaTWrMhq2NW/kcPuvNzdomva9LPui8gBNTHFDnGZ8r+cadm+ZEUdOKWge ge0x870A4KRZGGgRjNdY3zxIuasjNbGQuz5Ll/M8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727881AbgHUDzh (ORCPT ); Thu, 20 Aug 2020 23:55:37 -0400 Received: from mail-il1-f195.google.com ([209.85.166.195]:35122 "EHLO mail-il1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727955AbgHUDzZ (ORCPT ); Thu, 20 Aug 2020 23:55:25 -0400 Received: by mail-il1-f195.google.com with SMTP id q14so348596ilm.2; Thu, 20 Aug 2020 20:55:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=0qdov0F91JWjBX0RDvms+7RoXkdqALpZh74Eq1hAWng=; b=MURMi4WvW1yjixnVPs3ndqs9KksVRtp/OhdtbZLIY2qvXBLrnW8HGY0AG3JrjTwJF8 DfmkPf67X9UnHaYQSU5Rq6mpkNOHBTPkF+loAbupfVq9W5Sa1gYfxoNY3vxUPw5ekT6w r9eegYr4aXRQsSEHzWvXbCdkWxkpw9m86QgGQevObnG57bQ0fBrd6WZMYDSL+gEGFQP2 Y2tdpYc4YTawZLXm6o+3+2BvM9/CQdaniGHq06b3KrJz2692wp0oRD+rX3sMhqE0g0xe 7+q0Xlq11tTxxhR0Dzm1BGZ1IjgoVCLghHiuoZ5pAwlQ2VJz+2t/ki1Pw7BsvMDR/h2I CX3Q== X-Gm-Message-State: AOAM532+lQcgOath9TB/RD93FWHzVl5bcqfoDEXP7xpjzGUOoz2qxZDc W1XOHmgEazspz6Au6LMHtA== X-Google-Smtp-Source: ABdhPJxWfa3WQm5y8iByx2YiSDizCP8lwHMdCpOAAyhD1GwWnlqkAP+HsAEkjue1fkD8tbEL/F4XFg== X-Received: by 2002:a92:dd85:: with SMTP id g5mr1026111iln.210.1597982124146; Thu, 20 Aug 2020 20:55:24 -0700 (PDT) Received: from xps15.herring.priv ([64.188.179.249]) by smtp.googlemail.com with ESMTPSA id 79sm413923ilc.9.2020.08.20.20.55.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Aug 2020 20:55:23 -0700 (PDT) From: Rob Herring To: Bjorn Helgaas , Lorenzo Pieralisi Cc: linux-pci@vger.kernel.org, Andy Gross , Binghui Wang , Bjorn Andersson , Dilip Kota , Fabio Estevam , Gustavo Pimentel , Jerome Brunet , Jesper Nilsson , Jingoo Han , Jonathan Chocron , Jonathan Hunter , Kevin Hilman , Kishon Vijay Abraham I , Krzysztof Kozlowski , Kukjin Kim , Kunihiko Hayashi , Lucas Stach , Martin Blumenstingl , Masahiro Yamada , Murali Karicheri , Neil Armstrong , NXP Linux Team , Pengutronix Kernel Team , Pratyush Anand , Richard Zhu , Sascha Hauer , Shawn Guo , Shawn Guo , Stanimir Varbanov , Thierry Reding , Xiaowei Song , Yue Wang , Marc Zyngier , linux-amlogic@lists.infradead.org, linux-arm-kernel@axis.com, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-omap@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [PATCH v2 15/40] PCI: dwc: keystone: Convert .scan_bus() callback to use add_bus Date: Thu, 20 Aug 2020 21:53:55 -0600 Message-Id: <20200821035420.380495-16-robh@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200821035420.380495-1-robh@kernel.org> References: <20200821035420.380495-1-robh@kernel.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org TI keystone is the only Designware driver using .scan_bus(). This function pointer is the only thing preventing the Designware driver from using pci_host_probe(). Let's use the pci_ops.add_bus hook instead. Cc: Murali Karicheri Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Signed-off-by: Rob Herring --- drivers/pci/controller/dwc/pci-keystone.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c index 2b0906e1e0d3..fd000384fd2a 100644 --- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -454,15 +454,19 @@ static struct pci_ops ks_child_pcie_ops = { }; /** - * ks_pcie_v3_65_scan_bus() - keystone scan_bus post initialization + * ks_pcie_v3_65_add_bus() - keystone add_bus post initialization * * This sets BAR0 to enable inbound access for MSI_IRQ register */ -static void ks_pcie_v3_65_scan_bus(struct pcie_port *pp) +static int ks_pcie_v3_65_add_bus(struct pci_bus *bus) { + struct pcie_port *pp = bus->sysdata; struct dw_pcie *pci = to_dw_pcie_from_pp(pp); struct keystone_pcie *ks_pcie = to_keystone_pcie(pci); + if (!pci_is_root_bus(bus)) + return 0; + /* Configure and set up BAR0 */ ks_pcie_set_dbi_mode(ks_pcie); @@ -477,12 +481,15 @@ static void ks_pcie_v3_65_scan_bus(struct pcie_port *pp) * be sufficient. Use physical address to avoid any conflicts. */ dw_pcie_writel_dbi(pci, PCI_BASE_ADDRESS_0, ks_pcie->app.start); + + return 0; } static struct pci_ops ks_pcie_ops = { .map_bus = dw_pcie_own_conf_map_bus, .read = pci_generic_config_read, .write = pci_generic_config_write, + .add_bus = ks_pcie_v3_65_add_bus, }; /** @@ -842,7 +849,6 @@ static int __init ks_pcie_host_init(struct pcie_port *pp) static const struct dw_pcie_host_ops ks_pcie_host_ops = { .host_init = ks_pcie_host_init, .msi_host_init = ks_pcie_msi_host_init, - .scan_bus = ks_pcie_v3_65_scan_bus, }; static const struct dw_pcie_host_ops ks_pcie_am654_host_ops = {