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
--- a/drivers/sh/intc.c
+++ b/drivers/sh/intc.c
@@ -44,6 +44,7 @@
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 @@
/* 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 */