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Wed, 12 Jan 2022 06:14:46 -0800 From: Akhil R To: , , , , , , , , , , , , , , CC: Subject: [PATCH v2 1/3] device property: Add device_irq_get_byname Date: Wed, 12 Jan 2022 19:44:20 +0530 Message-ID: <1641996862-26960-2-git-send-email-akhilrajeev@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1641996862-26960-1-git-send-email-akhilrajeev@nvidia.com> References: <1641996862-26960-1-git-send-email-akhilrajeev@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: be6ad309-c77d-4a8a-f51f-08d9d5d5e649 X-MS-TrafficTypeDiagnostic: BN6PR12MB1764:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4714; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:12.22.5.234; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:mail.nvidia.com; PTR:InfoNoRecords; CAT:NONE; SFS:(4636009)(40470700002)(36840700001)(46966006)(7696005)(921005)(186003)(2616005)(70586007)(70206006)(107886003)(86362001)(110136005)(6666004)(82310400004)(40460700001)(26005)(336012)(426003)(316002)(8936002)(2906002)(47076005)(8676002)(36860700001)(81166007)(508600001)(36756003)(7416002)(4326008)(5660300002)(356005)(36900700001)(2101003)(83996005); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Jan 2022 14:14:51.6274 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: be6ad309-c77d-4a8a-f51f-08d9d5d5e649 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[12.22.5.234]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT030.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR12MB1764 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Get interrupt by name from ACPI table as well. Add option to use 'interrupt-names' in _DSD which can map to interrupt by index. The implementation is similar to 'interrupt-names' in devicetree. Also add a common routine to get irq by name from devicetree and ACPI table. Signed-off-by: Akhil R --- drivers/base/property.c | 35 +++++++++++++++++++++++++++++++++++ include/linux/property.h | 3 +++ 2 files changed, 38 insertions(+) diff --git a/drivers/base/property.c b/drivers/base/property.c index cbe4fa2..414c316 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -920,6 +920,41 @@ int fwnode_irq_get(const struct fwnode_handle *fwnode, unsigned int index) EXPORT_SYMBOL(fwnode_irq_get); /** + * fwnode_irq_get_byname - Get IRQ from a fwnode using its name + * @fwnode: Pointer to the firmware node + * @name: IRQ name in interrupt-names property in fwnode + * + * Returns Linux IRQ number on success, errno otherwise. + */ +int fwnode_irq_get_byname(const struct fwnode_handle *fwnode, const char *name) +{ + int index; + + if (unlikely(!name)) + return -EINVAL; + + index = fwnode_property_match_string(fwnode, "interrupt-names", name); + if (index < 0) + return index; + + return fwnode_irq_get(fwnode, index); +} +EXPORT_SYMBOL(fwnode_irq_get_byname); + +/** + * device_irq_get_byname - Get IRQ of a device using interrupt name + * @dev: Device to get the interrupt + * @name: IRQ name in interrupt-names property in fwnode + * + * Returns Linux IRQ number on success, errno otherwise. + */ +int device_irq_get_byname(struct device *dev, const char *name) +{ + return fwnode_irq_get_byname(dev_fwnode(dev), name); +} +EXPORT_SYMBOL_GPL(device_irq_get_byname); + +/** * fwnode_graph_get_next_endpoint - Get next endpoint firmware node * @fwnode: Pointer to the parent firmware node * @prev: Previous endpoint node or %NULL to get the first diff --git a/include/linux/property.h b/include/linux/property.h index 16f736c..bc49350 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -121,6 +121,9 @@ struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode); void fwnode_handle_put(struct fwnode_handle *fwnode); int fwnode_irq_get(const struct fwnode_handle *fwnode, unsigned int index); +int fwnode_irq_get_byname(const struct fwnode_handle *fwnode, const char *name); + +int device_irq_get_byname(struct device *dev, const char *name); unsigned int device_get_child_node_count(struct device *dev);