genirq: Move wakeup state to irq_data

Some irq_chips need to know the state of wakeup mode for
setting the trigger type etc. Reflect it in irq_data state.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

include/linux/irq.h

@@ -168,6 +168,8 @@ struct irq_data {
  * IRQD_PER_CPU			- Interrupt is per cpu
  * IRQD_AFFINITY_SET		- Interrupt affinity was set
  * IRQD_LEVEL			- Interrupt is level triggered
+ * IRQD_WAKEUP_STATE		- Interrupt is configured for wakeup
+ *				  from suspend
  */
 enum {
 	IRQD_TRIGGER_MASK		= 0xf,
@@ -176,6 +178,7 @@ enum {
 	IRQD_PER_CPU			= (1 << 11),
 	IRQD_AFFINITY_SET		= (1 << 12),
 	IRQD_LEVEL			= (1 << 13),
+	IRQD_WAKEUP_STATE		= (1 << 14),
 };
 
 static inline bool irqd_is_setaffinity_pending(struct irq_data *d)
@@ -217,6 +220,11 @@ static inline bool irqd_is_level_type(struct irq_data *d)
 	return d->state_use_accessors & IRQD_LEVEL;
 }
 
+static inline bool irqd_is_wakeup_set(struct irq_data *d)
+{
+	return d->state_use_accessors & IRQD_WAKEUP_STATE;
+}
+
 /**
  * struct irq_chip - hardware interrupt chip descriptor
  *

kernel/irq/internals.h

@@ -46,7 +46,6 @@ enum {
  * IRQS_PENDING			- irq is pending and replayed later
  * IRQS_MASKED			- irq is masked
  * IRQS_SUSPENDED		- irq is suspended
- * IRQS_WAKEUP			- irq triggers system wakeup from suspend
  */
 enum {
 	IRQS_AUTODETECT		= 0x00000001,
@@ -60,7 +59,6 @@ enum {
 	IRQS_PENDING		= 0x00000200,
 	IRQS_MASKED		= 0x00000400,
 	IRQS_SUSPENDED		= 0x00000800,
-	IRQS_WAKEUP		= 0x00001000,
 };
 
 #include "compat.h"

kernel/irq/manage.c

@@ -492,7 +492,7 @@ int irq_set_irq_wake(unsigned int irq, unsigned int on)
 			if (ret)
 				desc->wake_depth = 0;
 			else
-				desc->istate |= IRQS_WAKEUP;
+				irqd_set(&desc->irq_data, IRQD_WAKEUP_STATE);
 		}
 	} else {
 		if (desc->wake_depth == 0) {
@@ -502,7 +502,7 @@ int irq_set_irq_wake(unsigned int irq, unsigned int on)
 			if (ret)
 				desc->wake_depth = 1;
 			else
-				desc->istate &= ~IRQS_WAKEUP;
+				irqd_clear(&desc->irq_data, IRQD_WAKEUP_STATE);
 		}
 	}
 

kernel/irq/pm.c

@@ -69,7 +69,7 @@ int check_wakeup_irqs(void)
 	int irq;
 
 	for_each_irq_desc(irq, desc)
-		if ((desc->istate & IRQS_WAKEUP) &&
+		if (irqd_is_wakeup_set(&desc->irq_data) &&
 		    (desc->istate & IRQS_PENDING))
 			return -EBUSY;