[PATCH V2 4/6] irqdomain: Introduce irq_domain_get_irqchip_fwnode_name helper function
From: Suravee.Suthikulpanit@amd.com (Suravee Suthikulpanit)
Date: 2015-10-14 23:26:26
Also in:
linux-acpi, lkml
Subsystem:
irq domains (irq number mapping library), irq subsystem, the rest · Maintainers:
Thomas Gleixner, Linus Torvalds
This patch adds an accessor function to retrieve struct irqchip_fwid.name. Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> --- include/linux/irqdomain.h | 1 + kernel/irq/irqdomain.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+)
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 4950a71..006633d 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h@@ -187,6 +187,7 @@ static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d) #ifdef CONFIG_IRQ_DOMAIN struct fwnode_handle *irq_domain_alloc_fwnode(void *data); void irq_domain_free_fwnode(struct fwnode_handle *fwnode); +const char *irq_domain_get_irqchip_fwnode_name(struct fwnode_handle *fwnode); struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size, irq_hw_number_t hwirq_max, int direct_max, const struct irq_domain_ops *ops,
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 7f34d98..a8c1cf6 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c@@ -79,6 +79,24 @@ void irq_domain_free_fwnode(struct fwnode_handle *fwnode) } /** + * irq_domain_get_irqchip_fwnode_name - Retrieve associated name of + * specified irqchip fwnode + * @fwnode: Specified fwnode_handle + * + * Returns associated name of the specified fwnode, or NULL on failure. + */ +const char *irq_domain_get_irqchip_fwnode_name(struct fwnode_handle *fwnode) +{ + struct irqchip_fwid *fwid; + + if (!is_fwnode_irqchip(fwnode)) + return NULL; + + fwid = container_of(fwnode, struct irqchip_fwid, fwnode); + return fwid->name; +} + +/** * __irq_domain_add() - Allocate a new irq_domain data structure * @of_node: optional device-tree node of the interrupt controller * @size: Size of linear map; 0 for radix mapping only
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2.1.0