mfd: MAX8998/LP3974 hibernation support

This patch makes the driver to save and restore register values
for hibernation.

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/mfd/max8998-irq.c b/drivers/mfd/max8998-irq.c
index c6b61fcc5808..3903e1fbb334 100644
--- a/drivers/mfd/max8998-irq.c
+++ b/drivers/mfd/max8998-irq.c
@@ -183,6 +183,13 @@ static irqreturn_t max8998_irq_thread(int irq, void *data)
         return IRQ_HANDLED;
 }
 
+int max8998_irq_resume(struct max8998_dev *max8998)
+{
+        if (max8998->irq && max8998->irq_base)
+                max8998_irq_thread(max8998->irq_base, max8998);
+        return 0;
+}
+
 int max8998_irq_init(struct max8998_dev *max8998)
 {
         int i;