[PATCH v3 2/7] genirq: Add more helper functions to support stacked irq_chip

Joe.C
2014-10-09T14:29:35Z

From: "Joe.C" <yingjoe.chen@mediatek.com>

Add more helper function for stacked irq_chip to just call parent's
function.

Signed-off-by: Joe.C <yingjoe.chen@mediatek.com>
---
include/linux/irq.h | 5 +++++
kernel/irq/chip.c | 28 ++++++++++++++++++++++++++++
2 files changed, 33 insertions(+)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 07abf5a..6159256 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -437,6 +437,11 @@ extern void handle_nested_irq(unsigned int irq);

#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
extern void irq_chip_ack_parent(struct irq_data *data);
+extern void irq_chip_mask_parent(struct irq_data *data);
+extern void irq_chip_unmask_parent(struct irq_data *data);
+extern void irq_chip_eoi_parent(struct irq_data *data);
+extern int irq_chip_set_affinity_parent(struct irq_data *data,
+ const struct cpumask *dest, bool force);
extern int irq_chip_retrigger_hierarchy(struct irq_data *data);
#endif

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 58ed9ed..0ecc270 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -829,6 +829,34 @@ void irq_chip_ack_parent(struct irq_data *data)
data->chip->irq_ack(data);
}

+void irq_chip_mask_parent(struct irq_data *data)
+{
+ data = data->parent_data;
+ data->chip->irq_mask(data);
+}
+
+void irq_chip_unmask_parent(struct irq_data *data)
+{
+ data = data->parent_data;
+ data->chip->irq_unmask(data);
+}
+
+void irq_chip_eoi_parent(struct irq_data *data)
+{
+ data = data->parent_data;
+ data->chip->irq_eoi(data);
+}
+
+int irq_chip_set_affinity_parent(struct irq_data *data,
+ const struct cpumask *dest, bool force)
+{
+ data = data->parent_data;
+ if (data->chip->irq_set_affinity)
+ return data->chip->irq_set_affinity(data, dest, force);
+
+ return -ENOSYS;
+}
+
int irq_chip_retrigger_hierarchy(struct irq_data *data)
{
for (data = data->parent_data; data; data = data->parent_data)
--
1.8.1.1.dirty