sh: intc: Added resume from hibernation support to the intc

It's required for all modules loaded in the previous runtime
session because not initilized duing the kernel start-up.

Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/drivers/sh/intc.c b/drivers/sh/intc.c
index 7fb9b5c..12d13d9 100644 (file)
--- a/drivers/sh/intc.c
+++ b/drivers/sh/intc.c
@@ -44,6 +44,7 @@ struct intc_handle_int {
 struct intc_desc_int {
        struct list_head list;
        struct sys_device sysdev;
+       pm_message_t state;
        unsigned long *reg;
 #ifdef CONFIG_SMP
        unsigned long *smp;
@@ -786,18 +787,44 @@ static int intc_suspend(struct sys_device *dev, pm_message_t state)
        /* get intc controller associated with this sysdev */
        d = container_of(dev, struct intc_desc_int, sysdev);
 
-       /* enable wakeup irqs belonging to this intc controller */
-       for_each_irq_desc(irq, desc) {
-               if ((desc->status & IRQ_WAKEUP) && (desc->chip == &d->chip))
-                       intc_enable(irq);
+       switch (state.event) {
+       case PM_EVENT_ON:
+               if (d->state.event != PM_EVENT_FREEZE)
+                       break;
+               for_each_irq_desc(irq, desc) {
+                       if (desc->chip != &d->chip)
+                               continue;
+                       if (desc->status & IRQ_DISABLED)
+                               intc_disable(irq);
+                       else
+                               intc_enable(irq);
+               }
+               break;
+       case PM_EVENT_FREEZE:
+               /* nothing has to be done */
+               break;
+       case PM_EVENT_SUSPEND:
+               /* enable wakeup irqs belonging to this intc controller */
+               for_each_irq_desc(irq, desc) {
+                       if ((desc->status & IRQ_WAKEUP) && (desc->chip == &d->chip))
+                               intc_enable(irq);
+               }
+               break;
        }
+       d->state = state;
 
        return 0;
 }
 
+static int intc_resume(struct sys_device *dev)
+{
+       return intc_suspend(dev, PMSG_ON);
+}
+
 static struct sysdev_class intc_sysdev_class = {
        .name = "intc",
        .suspend = intc_suspend,
+       .resume = intc_resume,
 };
 
 /* register this intc as sysdev to allow suspend/resume */