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authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-08-20 21:45:05 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-10-15 09:49:23 +0900
commit90f790d2dc96f5a61855ae65b90e30c40c893a20 (patch)
tree5d88bc300043bf8a9925569b43f4686961bcd4c2 /drivers/base/regmap/regmap-irq.c
parentddffeb8c4d0331609ef2581d84de4d763607bd37 (diff)
downloadlinux-linaro-stable-90f790d2dc96f5a61855ae65b90e30c40c893a20.tar.gz
regmap: irq: Allow users to retrieve the irq_domain
This is useful for integration with other subsystems, especially MFD, and provides an alternative API for users that request their own IRQs. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base/regmap/regmap-irq.c')
-rw-r--r--drivers/base/regmap/regmap-irq.c19
1 files changed, 19 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);