[PATCH v7 02/13] genirq: Add irq_chip_(enable|disable)_parent
From: stefan@agner.ch (Stefan Agner)
Date: 2015-05-16 09:44:37
Also in:
linux-devicetree, lkml
Subsystem:
irq subsystem, the rest · Maintainers:
Thomas Gleixner, Linus Torvalds
Add helper irq_chip_enable_parent and irq_chip_disable_parent. The helper implement the default behavior in case irq_enable or irq_disable is not implemented for the parent interrupt chip, which is calling the irq_mask or irq_unmask respectively. Signed-off-by: Stefan Agner <stefan@agner.ch> --- include/linux/irq.h | 2 ++ kernel/irq/chip.c | 28 ++++++++++++++++++++++++++++ 2 files changed, 30 insertions(+)
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 62c6901..2633061 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h@@ -458,6 +458,8 @@ extern void handle_nested_irq(unsigned int irq); extern int irq_chip_compose_msi_msg(struct irq_data *data, struct msi_msg *msg); #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY +extern void irq_chip_enable_parent(struct irq_data *data); +extern void irq_chip_disable_parent(struct irq_data *data); extern void irq_chip_ack_parent(struct irq_data *data); extern int irq_chip_retrigger_hierarchy(struct irq_data *data); extern void irq_chip_mask_parent(struct irq_data *data);
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index eb9a4ea..2456fe8 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c@@ -876,6 +876,34 @@ void irq_cpu_offline(void) #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY /** + * irq_chip_enable_parent - Enable the parent interrupt (defaults to unmask if + * NULL) + * @data: Pointer to interrupt specific data + */ +void irq_chip_enable_parent(struct irq_data *data) +{ + data = data->parent_data; + if (data->chip->irq_enable) + data->chip->irq_enable(data); + else + data->chip->irq_unmask(data); +} + +/** + * irq_chip_disable_parent - Disable the parent interrupt (defaults to mask if + * NULL) + * @data: Pointer to interrupt specific data + */ +void irq_chip_disable_parent(struct irq_data *data) +{ + data = data->parent_data; + if (data->chip->irq_disable) + data->chip->irq_disable(data); + else + data->chip->irq_mask(data); +} + +/** * irq_chip_ack_parent - Acknowledge the parent interrupt * @data: Pointer to interrupt specific data */
--
2.4.1