genirq: Add chip suspend and resume callbacks
These callbacks are only called in the syscore suspend/resume code on
interrupt chips which have been registered via the generic irq chip
mechanism. Calling those callbacks per irq would be rather icky, but
with the generic irq chip mechanism we can call this per registered
chip.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 2ba2f12..8b45384 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -280,6 +280,9 @@
* @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips
* @irq_cpu_online: configure an interrupt source for a secondary CPU
* @irq_cpu_offline: un-configure an interrupt source for a secondary CPU
+ * @irq_suspend: function called from core code on suspend once per chip
+ * @irq_resume: function called from core code on resume once per chip
+ * @irq_pm_shutdown: function called from core code on shutdown once per chip
* @irq_print_chip: optional to print special chip info in show_interrupts
* @flags: chip specific flags
*
@@ -309,6 +312,10 @@
void (*irq_cpu_online)(struct irq_data *data);
void (*irq_cpu_offline)(struct irq_data *data);
+ void (*irq_suspend)(struct irq_data *data);
+ void (*irq_resume)(struct irq_data *data);
+ void (*irq_pm_shutdown)(struct irq_data *data);
+
void (*irq_print_chip)(struct irq_data *data, struct seq_file *p);
unsigned long flags;
@@ -626,6 +633,7 @@
* @wake_active: Interrupt is marked as an wakeup from suspend source
* @num_ct: Number of available irq_chip_type instances (usually 1)
* @private: Private data for non generic chip callbacks
+ * @list: List head for keeping track of instances
* @chip_types: Array of interrupt irq_chip_types
*
* Note, that irq_chip_generic can have multiple irq_chip_type
@@ -646,6 +654,7 @@
u32 wake_active;
unsigned int num_ct;
void *private;
+ struct list_head list;
struct irq_chip_type chip_types[0];
};
@@ -680,6 +689,8 @@
enum irq_gc_flags flags, unsigned int clr,
unsigned int set);
int irq_setup_alt_chip(struct irq_data *d, unsigned int type);
+void irq_remove_generic_chip(struct irq_chip_generic *gc, u32 msk,
+ unsigned int clr, unsigned int set);
static inline struct irq_chip_type *irq_data_get_chip_type(struct irq_data *d)
{