[PATCH 3/6] irqdomain: Export of_phandle_args_to_fwspec()
From: Kishon Vijay Abraham I
Date: Thu Mar 25 2021 - 05:01:43 EST
Export of_phandle_args_to_fwspec() to be used by drivers.
of_phandle_args_to_fwspec() can be used by drivers to get irq specifier
from device node useful while creating hierarchy domain. This was
suggested by Marc Zyngier [1].
[1] -> http://lore.kernel.org/r/20190223121143.14c1f150@xxxxxxxxxxxxxxxxxxxxxxx/
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
include/linux/irqdomain.h | 2 ++
kernel/irq/irqdomain.c | 6 +++---
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 42d196805f58..0236f508259e 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -391,6 +391,8 @@ extern void irq_domain_associate_many(struct irq_domain *domain,
extern unsigned int irq_create_mapping_affinity(struct irq_domain *host,
irq_hw_number_t hwirq,
const struct irq_affinity_desc *affinity);
+void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args, unsigned int count,
+ struct irq_fwspec *fwspec);
extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
extern void irq_dispose_mapping(unsigned int virq);
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 288151393a06..70f050741ab2 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -756,9 +756,8 @@ static int irq_domain_translate(struct irq_domain *d,
return 0;
}
-static void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args,
- unsigned int count,
- struct irq_fwspec *fwspec)
+void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args, unsigned int count,
+ struct irq_fwspec *fwspec)
{
int i;
@@ -768,6 +767,7 @@ static void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args,
for (i = 0; i < count; i++)
fwspec->param[i] = args[i];
}
+EXPORT_SYMBOL_GPL(of_phandle_args_to_fwspec);
unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec)
{
--
2.17.1