/**
* set_irq_wake - control irq power management wakeup
* @irq: interrupt to control
* @on: enable/disable power management wakeup
*
* Enable/disable power management wakeup mode, which is
* disabled by default. Enables and disables must match,
* just as they match for non-wakeup mode support.
*
* Wakeup mode lets this IRQ wake the system from sleep
* states like "suspend to RAM".
*/
int set_irq_wake(unsigned int irq, unsigned int on)
{
struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
int ret = 0;
/* wakeup-capable irqs can be shared between drivers that
* don't need to have the same sleep mode behaviors.
*/
raw_spin_lock_irqsave(&desc->lock, flags);
if (on) {
if (desc->wake_depth++ == 0) {
ret = set_irq_wake_real(irq, on);
if (ret)
desc->wake_depth = 0;
else
desc->status |= IRQ_WAKEUP;
}
} else {
if (desc->wake_depth == 0) {
WARN(1, "Unbalanced IRQ %d wake disable\n", irq);
} else if (--desc->wake_depth == 0) {
ret = set_irq_wake_real(irq, on);
if (ret)
desc->wake_depth = 1;
else
desc->status &= ~IRQ_WAKEUP;
}
}
raw_spin_unlock_irqrestore(&desc->lock, flags);
return ret;
}
int irq_set_irq_wake(unsigned int irq, unsigned int on)
{
unsigned long flags;
struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL);
int ret = 0;
if (!desc)
return -EINVAL;
if (on) {
if (desc->wake_depth++ == 0) {
ret = set_irq_wake_real(irq, on);
if (ret)
desc->wake_depth = 0;
else
irqd_set(&desc->irq_data, IRQD_WAKEUP_STATE);
}
} else {
if (desc->wake_depth == 0) {
WARN(1, "Unbalanced IRQ %d wake disable\n", irq);
} else if (--desc->wake_depth == 0) {
ret = set_irq_wake_real(irq, on);
if (ret)
desc->wake_depth = 1;
else
irqd_clear(&desc->irq_data, IRQD_WAKEUP_STATE);
}
}
irq_put_desc_busunlock(desc, flags);
return ret;
}
/**
* irq_set_irq_wake - control irq power management wakeup
* @irq: interrupt to control
* @on: enable/disable power management wakeup
*
* Enable/disable power management wakeup mode, which is
* disabled by default. Enables and disables must match,
* just as they match for non-wakeup mode support.
*
* Wakeup mode lets this IRQ wake the system from sleep
* states like "suspend to RAM".
*/
int irq_set_irq_wake(unsigned int irq, unsigned int on)
{
unsigned long flags;
struct irq_desc *desc = irq_get_desc_buslock(irq, &flags);
int ret = 0;
if (!desc)
return -EINVAL;
/* wakeup-capable irqs can be shared between drivers that
* don't need to have the same sleep mode behaviors.
*/
if (on) {
if (desc->wake_depth++ == 0) {
ret = set_irq_wake_real(irq, on);
if (ret)
desc->wake_depth = 0;
else
irqd_set(&desc->irq_data, IRQD_WAKEUP_STATE);
}
} else {
if (desc->wake_depth == 0) {
WARN(1, "Unbalanced IRQ %d wake disable\n", irq);
} else if (--desc->wake_depth == 0) {
ret = set_irq_wake_real(irq, on);
if (ret)
desc->wake_depth = 1;
else
irqd_clear(&desc->irq_data, IRQD_WAKEUP_STATE);
}
}
irq_put_desc_busunlock(desc, flags);
return ret;
}
int zw_irq_set_irq_wake(unsigned int irq, unsigned int on)
{
unsigned long flags;
struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL);
int ret = 0;
if (!desc)
return -EINVAL;
if (on) {
if (desc->zw_wake_depth != 0) {
if (set_irq_wake_real(irq, on) == 0) {
irqd_set(&desc->irq_data, IRQD_WAKEUP_STATE);
desc->wake_depth = desc->zw_wake_depth;
desc->zw_wake_depth = 0;
}
}
} else {
if ((desc->zw_wake_depth == 0) && (desc->wake_depth > 0)) {
if (set_irq_wake_real(irq, on) == 0) {
irqd_clear(&desc->irq_data, IRQD_WAKEUP_STATE);
desc->zw_wake_depth = desc->wake_depth;
desc->wake_depth = 0x7FFFFFFFU;
}
}
}
irq_put_desc_busunlock(desc, flags);
return ret;
}
