diff options
| -rw-r--r-- | include/linux/irq.h | 2 | ||||
| -rw-r--r-- | kernel/irq/chip.c | 37 |
2 files changed, 39 insertions, 0 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index c9bcdbf6bc63..c67e76fbcc07 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -669,6 +669,8 @@ extern int irq_chip_set_parent_state(struct irq_data *data, extern int irq_chip_get_parent_state(struct irq_data *data, enum irqchip_irq_state which, bool *state); +extern void irq_chip_shutdown_parent(struct irq_data *data); +extern unsigned int irq_chip_startup_parent(struct irq_data *data); 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); diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 0d0276378c70..3ffa0d80ddd1 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -1260,6 +1260,43 @@ int irq_chip_get_parent_state(struct irq_data *data, EXPORT_SYMBOL_GPL(irq_chip_get_parent_state); /** + * irq_chip_shutdown_parent - Shutdown the parent interrupt + * @data: Pointer to interrupt specific data + * + * Invokes the irq_shutdown() callback of the parent if available or falls + * back to irq_chip_disable_parent(). + */ +void irq_chip_shutdown_parent(struct irq_data *data) +{ + struct irq_data *parent = data->parent_data; + + if (parent->chip->irq_shutdown) + parent->chip->irq_shutdown(parent); + else + irq_chip_disable_parent(data); +} +EXPORT_SYMBOL_GPL(irq_chip_shutdown_parent); + +/** + * irq_chip_startup_parent - Startup the parent interrupt + * @data: Pointer to interrupt specific data + * + * Invokes the irq_startup() callback of the parent if available or falls + * back to irq_chip_enable_parent(). + */ +unsigned int irq_chip_startup_parent(struct irq_data *data) +{ + struct irq_data *parent = data->parent_data; + + if (parent->chip->irq_startup) + return parent->chip->irq_startup(parent); + + irq_chip_enable_parent(data); + return 0; +} +EXPORT_SYMBOL_GPL(irq_chip_startup_parent); + +/** * irq_chip_enable_parent - Enable the parent interrupt (defaults to unmask if * NULL) * @data: Pointer to interrupt specific data |