[PATCH v1 2/2] of: property: Add fw_devlink support for interrupts

Saravana Kannan
2021-01-20T08:09:22Z

This allows fw_devlink to create device links between consumers of an
interrupt and the supplier of the interrupt.

Cc: Marc Zyngier <maz@kernel.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Saravana Kannan <saravanak@google.com>
---
drivers/of/property.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/drivers/of/property.c b/drivers/of/property.c
index 0b256ce9d7d5..9dd9cc50e65a 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -24,6 +24,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_graph.h>
+#include <linux/of_irq.h>
#include <linux/string.h>
#include <linux/moduleparam.h>

@@ -1289,6 +1290,15 @@ static struct device_node *parse_gpio_compat(struct device_node *np,
return sup_args.np;
}

+static struct device_node *parse_interrupts(struct device_node *np,
+ const char *prop_name, int index)
+{
+ if (strcmp(prop_name, "interrupts") || index)
+ return NULL;
+
+ return of_irq_find_parent(np);
+}
+
static const struct supplier_bindings of_supplier_bindings[] = {
{ .parse_prop = parse_clocks, },
{ .parse_prop = parse_interconnects, },
@@ -1315,6 +1325,7 @@ static const struct supplier_bindings of_supplier_bindings[] = {
{ .parse_prop = parse_pinctrl7, },
{ .parse_prop = parse_pinctrl8, },
{ .parse_prop = parse_gpio_compat, },
+ { .parse_prop = parse_interrupts, },
{ .parse_prop = parse_regulators, },
{ .parse_prop = parse_gpio, },
{ .parse_prop = parse_gpios, },
--
2.30.0.284.gd98b1dd5eaa7-goog