@@ -936,6 +936,57 @@ void __iomem *fwnode_iomap(struct fwnode_handle *fwnode, int index)
EXPORT_SYMBOL(fwnode_iomap);
/**
+ * fwnode_irq_get_byname - Get IRQ from a fwnode using its name
+ * @fwnode: Pointer to the firmware node
+ * @name: IRQ name
+ *
+ * Description:
+ * Find a match to the string 'name' in the 'interrupt-names' string array
+ * in _DSD for ACPI, or of_node for device tree. Then get the Linux IRQ
+ * number of the IRQ resource corresponding to the index of the matched
+ * string.
+ *
+ * Return:
+ * Linux IRQ number on success
+ * Negative errno otherwise.
+ */
+int fwnode_irq_get_byname(const struct fwnode_handle *fwnode, const char *name)
+{
+ int index;
+
+ if (!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
+ *
+ * Description:
+ * Find a match to the string 'name' in the 'interrupt-names' string array
+ * in _DSD for ACPI, or of_node for device tree. Then get the Linux IRQ
+ * number of the IRQ resource corresponding to the index of the matched
+ * string.
+ *
+ * Return:
+ * Linux IRQ number on success
+ * Negative 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
@@ -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);
void __iomem *fwnode_iomap(struct fwnode_handle *fwnode, int index);
Add device_irq_get_byname() to get an interrupt by name from both the ACPI table and the Device Tree. This will allow to use 'interrupt-names' in _DSD which can be mapped to Interrupt() resource by index. The implementation is similar to 'interrupt-names' in the Device Tree. Signed-off-by: Akhil R <akhilrajeev@nvidia.com> --- drivers/base/property.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++ include/linux/property.h | 3 +++ 2 files changed, 54 insertions(+)