From patchwork Sat Mar 15 20:15:39 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 14018208 X-Patchwork-Delegate: kw@linux.com Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C09781C6FFF; Sat, 15 Mar 2025 20:16:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742069762; cv=none; b=SuFtDxzcX81j5ZYMy7M860QOvxT/KIdRRa+4SDh2R3VW5qX6rQlASD8VcDWJfxmSJPn1Uiz82LWyA5dZfjrs+N3H/TRZt8cXSWG3ywPomq/w8O6sG8mDoQi9+MVpiXtpMrv1DCwzPiQM74Mu6D1mSWqCLgbkeGtImqnwFXIDdQU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742069762; c=relaxed/simple; bh=CpTQVdmtXh0uTx65c9F5PQoTrjYzcny7+9eiEMKtE/Q=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=NMVM5aLTSKMOYm0W0KC9xZuvLKd0kAEic3AgyF2ggMnp4dY2AkIMhFL99SuJYc6iZrwq59KlXI/g8gOhSFSxy9+JzP1epY2s7XH55t0KRDrgWU5FFzBy4NVrx+3BFaOv4bPAib7qq9JUWODabefTKntl6DkwqyF7qOGkICfbnYM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Rt74XQ34; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Rt74XQ34" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 143E7C113CF; Sat, 15 Mar 2025 20:16:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742069762; bh=CpTQVdmtXh0uTx65c9F5PQoTrjYzcny7+9eiEMKtE/Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Rt74XQ34r5n1G30d4C5QLmhvGYhqtsM5ePEZ58Oc4IqMG9sBy9XR8xvhB8JcyOjzb kuxktKG3tnl8vCzlYIIjkwdBz1D66shG3pZmj7Lxcwd3KjQMyNXj0lDLrejzRsV2eD 0TAFR6cNwPiLRU3rJKifXVEVbg42FzVxZAVTUYFvUKe1wx2EclDyrxx0v5hoTVONv5 1QnpgTq19p3pc4IdJdCXz8R1mJzaB1bFTR34jN3Eq+vVCBzm4+EGOxgnvSIc/jrCVd 2frTdiiq9jDT3rkwNm+vllPK8LNZpKAI3mXivT9ixE7f2X2ndZMt8epfQ0RTL5287A wY+Sc6Gzt07DQ== From: Bjorn Helgaas To: Frank Li Cc: Rob Herring , Saravana Kannan , Jingoo Han , Manivannan Sadhasivam , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Richard Zhu , Lucas Stach , Shawn Guo , Sascha Hauer , Fabio Estevam , Niklas Cassel , Pengutronix Kernel Team , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, Bjorn Helgaas Subject: [PATCH v12 04/13] PCI: dwc: Consolidate devicetree handling in dw_pcie_host_get_resources() Date: Sat, 15 Mar 2025 15:15:39 -0500 Message-Id: <20250315201548.858189-5-helgaas@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250315201548.858189-1-helgaas@kernel.org> References: <20250315201548.858189-1-helgaas@kernel.org> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bjorn Helgaas Consolidate devicetree resource handling in dw_pcie_host_get_resources(). No functional change intended. Signed-off-by: Bjorn Helgaas Reviewed-by: Frank Li --- .../pci/controller/dwc/pcie-designware-host.c | 37 +++++++++++++------ 1 file changed, 25 insertions(+), 12 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index 5636243fb90e..9ce06b1ee266 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -418,25 +418,15 @@ static void dw_pcie_host_request_msg_tlp_res(struct dw_pcie_rp *pp) } } -int dw_pcie_host_init(struct dw_pcie_rp *pp) +static int dw_pcie_host_get_resources(struct dw_pcie_rp *pp) { struct dw_pcie *pci = to_dw_pcie_from_pp(pp); struct device *dev = pci->dev; - struct device_node *np = dev->of_node; struct platform_device *pdev = to_platform_device(dev); struct resource_entry *win; - struct pci_host_bridge *bridge; struct resource *res; int ret; - raw_spin_lock_init(&pp->lock); - - bridge = devm_pci_alloc_host_bridge(dev, 0); - if (!bridge) - return -ENOMEM; - - pp->bridge = bridge; - ret = dw_pcie_get_resources(pci); if (ret) return ret; @@ -455,13 +445,36 @@ int dw_pcie_host_init(struct dw_pcie_rp *pp) return PTR_ERR(pp->va_cfg0_base); /* Get the I/O range from DT */ - win = resource_list_first_type(&bridge->windows, IORESOURCE_IO); + win = resource_list_first_type(&pp->bridge->windows, IORESOURCE_IO); if (win) { pp->io_size = resource_size(win->res); pp->io_bus_addr = win->res->start - win->offset; pp->io_base = pci_pio_to_address(win->res->start); } + return 0; +} + +int dw_pcie_host_init(struct dw_pcie_rp *pp) +{ + struct dw_pcie *pci = to_dw_pcie_from_pp(pp); + struct device *dev = pci->dev; + struct device_node *np = dev->of_node; + struct pci_host_bridge *bridge; + int ret; + + raw_spin_lock_init(&pp->lock); + + bridge = devm_pci_alloc_host_bridge(dev, 0); + if (!bridge) + return -ENOMEM; + + pp->bridge = bridge; + + ret = dw_pcie_host_get_resources(pp); + if (ret) + return ret; + /* Set default bus ops */ bridge->ops = &dw_pcie_ops; bridge->child_ops = &dw_child_pcie_ops;