[PATCH v7 06/14] genirq: Introduce irq_chip_{request,release}_resource_parent() apis

Lokesh Vutla
2019-04-20T10:09:42Z

Introduce irq_chip_{request,release}_resource_parent() apis so
that these can be used in hierarchical irqchips.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
---
Changes since v6:
- New patch

include/linux/irq.h | 2 ++
kernel/irq/chip.c | 27 +++++++++++++++++++++++++++
2 files changed, 29 insertions(+)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 7ae8de5ad0f2..fb301cf29148 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -625,6 +625,8 @@ extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on);
extern int irq_chip_set_vcpu_affinity_parent(struct irq_data *data,
void *vcpu_info);
extern int irq_chip_set_type_parent(struct irq_data *data, unsigned int type);
+extern int irq_chip_request_resources_parent(struct irq_data *data);
+extern void irq_chip_release_resources_parent(struct irq_data *data);
#endif

/* Handling of unhandled and spurious interrupts: */
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 51128bea3846..29d6c7d070b4 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -1459,6 +1459,33 @@ int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on)
return -ENOSYS;
}
EXPORT_SYMBOL_GPL(irq_chip_set_wake_parent);
+
+/**
+ * irq_chip_request_resources_parent - Request resources on the parent interrupt
+ * @data: Pointer to interrupt specific data
+ */
+int irq_chip_request_resources_parent(struct irq_data *data)
+{
+ data = data->parent_data;
+
+ if (data->chip->irq_request_resources)
+ return data->chip->irq_request_resources(data);
+
+ return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(irq_chip_request_resources_parent);
+
+/**
+ * irq_chip_release_resources_parent - Release resources on the parent interrupt
+ * @data: Pointer to interrupt specific data
+ */
+void irq_chip_release_resources_parent(struct irq_data *data)
+{
+ data = data->parent_data;
+ if (data->chip->irq_release_resources)
+ data->chip->irq_release_resources(data);
+}
+EXPORT_SYMBOL_GPL(irq_chip_release_resources_parent);
#endif

/**
--
2.21.0