Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1034027AbcJRQHo (ORCPT ); Tue, 18 Oct 2016 12:07:44 -0400 Received: from foss.arm.com ([217.140.101.70]:35268 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030470AbcJRQEI (ORCPT ); Tue, 18 Oct 2016 12:04:08 -0400 From: Lorenzo Pieralisi To: iommu@lists.linux-foundation.org Cc: Lorenzo Pieralisi , Will Deacon , Hanjun Guo , Robin Murphy , Marc Zyngier , Joerg Roedel , "Rafael J. Wysocki" , Tomasz Nowicki , Jon Masters , Eric Auger , Sinan Kaya , Nate Watterson , Prem Mallappa , Dennis Chen , linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v6 06/16] drivers: iommu: arm-smmu-v3: convert struct device of_node to fwnode usage Date: Tue, 18 Oct 2016 17:04:04 +0100 Message-Id: <20161018160414.1228-7-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.10.0 In-Reply-To: <20161018160414.1228-1-lorenzo.pieralisi@arm.com> References: <20161018160414.1228-1-lorenzo.pieralisi@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2171 Lines: 60 Current ARM SMMU v3 driver rely on the struct device.of_node pointer for device look-up and iommu_ops retrieval. In preparation for ACPI probing enablement, convert the driver to use the struct device.fwnode member for device and iommu_ops look-up so that the driver infrastructure can be used also on systems that do not associate an of_node pointer to a struct device (eg ACPI), making the device look-up and iommu_ops retrieval firmware agnostic. Signed-off-by: Lorenzo Pieralisi Cc: Will Deacon Cc: Hanjun Guo Cc: Robin Murphy --- drivers/iommu/arm-smmu-v3.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 15c01c3..bbc2818 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1723,13 +1723,14 @@ static struct platform_driver arm_smmu_driver; static int arm_smmu_match_node(struct device *dev, void *data) { - return dev->of_node == data; + return dev->fwnode == data; } -static struct arm_smmu_device *arm_smmu_get_by_node(struct device_node *np) +static +struct arm_smmu_device *arm_smmu_get_by_fwnode(struct fwnode_handle *fwnode) { struct device *dev = driver_find_device(&arm_smmu_driver.driver, NULL, - np, arm_smmu_match_node); + fwnode, arm_smmu_match_node); put_device(dev); return dev ? dev_get_drvdata(dev) : NULL; } @@ -1765,7 +1766,7 @@ static int arm_smmu_add_device(struct device *dev) master = fwspec->iommu_priv; smmu = master->smmu; } else { - smmu = arm_smmu_get_by_node(to_of_node(fwspec->iommu_fwnode)); + smmu = arm_smmu_get_by_fwnode(fwspec->iommu_fwnode); if (!smmu) return -ENODEV; master = kzalloc(sizeof(*master), GFP_KERNEL); @@ -2634,7 +2635,8 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev) return ret; /* And we're up. Go go go! */ - of_iommu_set_ops(dev->of_node, &arm_smmu_ops); + fwnode_iommu_set_ops(dev->fwnode, &arm_smmu_ops); + #ifdef CONFIG_PCI pci_request_acs(); ret = bus_set_iommu(&pci_bus_type, &arm_smmu_ops); -- 2.10.0