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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);