[ARM] Add IRQ wake support for SA1111 PS/2 interfaces.

arch/arm/mach-sa1100/neponset.c

@@ -87,6 +87,15 @@ static inline void __init neponset_init_irq(void)
 	set_irq_type(IRQ_GPIO25, IRQT_RISING);
 	set_irq_chained_handler(IRQ_GPIO25, neponset_irq_handler);
 
+	/*
+	 * We would set IRQ_GPIO25 to be a wake-up IRQ, but
+	 * unfortunately something on the Neponset activates
+	 * this IRQ on sleep (ethernet?)
+	 */
+#if 0
+	enable_irq_wake(IRQ_GPIO25);
+#endif
+
 	/*
 	 * Setup other Neponset IRQs.  SA1111 will be done by the
 	 * generic SA1111 code.

drivers/input/serio/sa1111ps2.c

@@ -145,6 +145,8 @@ static int ps2_open(struct serio *io)
 
 	ps2if->open = 1;
 
+	enable_irq_wake(ps2if->dev->irq[0]);
+
 	sa1111_writel(PS2CR_ENA, ps2if->base + SA1111_PS2CR);
 	return 0;
 }
@@ -155,6 +157,8 @@ static void ps2_close(struct serio *io)
 
 	sa1111_writel(0, ps2if->base + SA1111_PS2CR);
 
+	disable_irq_wake(ps2if->dev->irq[0]);
+
 	ps2if->open = 0;
 
 	free_irq(ps2if->dev->irq[1], ps2if);