From patchwork Mon Aug 3 21:01:04 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: 11698955 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 A9CF1138C for ; Mon, 3 Aug 2020 21:02:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EB1A022C9F for ; Mon, 3 Aug 2020 21:02:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596488522; bh=PrcCOya3p06TwfD0R99TTK6UZhDpMvglwZS8PPa+Dvk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=EFDB2qIV4KpW8sd9ObzvuQ34c9V3wi1VflMlCsZuBSJ5cZWv6nPEcPyRLzmpz8FQW sxsU3tVuKWXWjhMqD8a/lMho+5ew+uxaZRiFHNrEqCc/kVq/ttxUT67XsZZ/COjsdX cyyP6OjSUQ4EZzEz03v2ggRYg3t8ROrULgFOdtfg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729404AbgHCVCA (ORCPT ); Mon, 3 Aug 2020 17:02:00 -0400 Received: from mail-io1-f66.google.com ([209.85.166.66]:45747 "EHLO mail-io1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729064AbgHCVCA (ORCPT ); Mon, 3 Aug 2020 17:02:00 -0400 Received: by mail-io1-f66.google.com with SMTP id u126so2718395iod.12; Mon, 03 Aug 2020 14:01:59 -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=+G09sVWmLiEk+qlmhnIPsi/B/n4JiVilLbMwDzTJ8Fc=; b=PaoWVWjJPXhqL4kgjd3GLb0n3DyC2PeyL+cfvdOJEGt8nunuxRHj2H5NQ9PSdaxTnM oHEeOiK1lAtlgw6N+pXTQhsFucGqIo5dC1ab+c7oyD+IIuyk96GMq4ohyLSI+YE+E5+N EyjUO165ow6j8kEUf+ZAaGTwwzkNmIOTdmzyX9cjlibmB6iSMj1ezTVwQd5lMYN1xxA9 i57z+MDAtmdkmOyFt2MYO5+A1+AokobryHc89++mOOFuajqBZIMU7jPgoj+NEZ6sg/Ql 5b03x00Gk8/Q5MhR83hg5b/IzROudK5Y0fNuIEcdJXpmlpu0s3SA51cCp8tUyE0wWJTV q6kQ== X-Gm-Message-State: AOAM530l8j86JMGgWWVQ1mB5HyjTi6Dwzga5Z8VGxyLlZdGkB8FHfvaW 82hSUIwIq+E0JBITbt6P4g== X-Google-Smtp-Source: ABdhPJwMMkdyajQxcuVfgyMatvkAGgozf6l/jhIrQdnBe0B3HLM8TfQxbxa+NUmVrm7WcBb9dbLq7Q== X-Received: by 2002:a5e:c311:: with SMTP id a17mr1821353iok.12.1596488518872; Mon, 03 Aug 2020 14:01:58 -0700 (PDT) Received: from xps15.herring.priv ([64.188.179.252]) by smtp.googlemail.com with ESMTPSA id r6sm9292280iod.7.2020.08.03.14.01.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Aug 2020 14:01:58 -0700 (PDT) From: Rob Herring To: Bjorn Helgaas , Gustavo Pimentel , Jingoo Han , Lorenzo Pieralisi Cc: Binghui Wang , Bjorn Andersson , Fabio Estevam , Jesper Nilsson , Jonathan Chocron , Jonathan Hunter , Kevin Hilman , Kishon Vijay Abraham I , Krzysztof Kozlowski , Kukjin Kim , Kunihiko Hayashi , 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-pci@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-tegra@vger.kernel.org, Lucas Stach , Masahiro Yamada , Murali Karicheri , NXP Linux Team , Pengutronix Kernel Team , Pratyush Anand , Richard Zhu , Sascha Hauer , Shawn Guo , Stanimir Varbanov , Thierry Reding , Xiaowei Song , Yue Wang Subject: [RFC 15/27] PCI: dwc: keystone: Convert .scan_bus() callback to use add_bus Date: Mon, 3 Aug 2020 15:01:04 -0600 Message-Id: <20200803210116.3132633-16-robh@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200803210116.3132633-1-robh@kernel.org> References: <20200803210116.3132633-1-robh@kernel.org> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@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 Cc: linux-arm-kernel@lists.infradead.org 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 df1194d186bc..17271b21fb7d 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 = {