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-rw-r--r--drivers/base/regmap/regmap-irq.c19
-rw-r--r--include/linux/regmap.h2
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index 5b6b1d8e6cc0..5972ad958544 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -458,3 +458,22 @@ int regmap_irq_get_virq(struct regmap_irq_chip_data *data, int irq)
return irq_create_mapping(data->domain, irq);
}
EXPORT_SYMBOL_GPL(regmap_irq_get_virq);
+
+/**
+ * regmap_irq_get_domain(): Retrieve the irq_domain for the chip
+ *
+ * Useful for drivers to request their own IRQs and for integration
+ * with subsystems. For ease of integration NULL is accepted as a
+ * domain, allowing devices to just call this even if no domain is
+ * allocated.
+ *
+ * @data: regmap_irq controller to operate on.
+ */
+struct irq_domain *regmap_irq_get_domain(struct regmap_irq_chip_data *data)
+{
+ if (data)
+ return data->domain;
+ else
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(regmap_irq_get_domain);
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 9f228d7f7ac4..41e9e4e17657 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -19,6 +19,7 @@
struct module;
struct device;
struct i2c_client;
+struct irq_domain;
struct spi_device;
struct regmap;
struct regmap_range_cfg;
@@ -321,6 +322,7 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data);
int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data);
int regmap_irq_get_virq(struct regmap_irq_chip_data *data, int irq);
+struct irq_domain *regmap_irq_get_domain(struct regmap_irq_chip_data *data);
#else