mfd: Wake-up from Suspend MAX8997 support

- Support wake-up from suspend-to-ram.
- Handle pending interrupt after a resume.
- If pdata->wakeup is enabled, by default, the device is assumed to be
capable of wakeup (the interrupt pin is connected to a wakeup-source GPIO)
and may wakeup the system (MAX8997 has a power button input pin).

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, 0 insertions, 1 deletions

diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h
index 5ff2400ad46c..3f4deb62d6b0 100644
--- a/include/linux/mfd/max8997-private.h
+++ b/include/linux/mfd/max8997-private.h
@@ -326,7 +326,6 @@ struct max8997_dev {
         int irq;
         int ono;
         int irq_base;
-        bool wakeup;
         struct mutex irqlock;
         int irq_masks_cur[MAX8997_IRQ_GROUP_NR];
         int irq_masks_cache[MAX8997_IRQ_GROUP_NR];