mfd: max8998: Add irq domain support

This patch adds irq domain support for max8998 interrupts.

To keep both non-DT and DT worlds happy, simple domain is used, which is
linear when no explicit IRQ base is specified and legacy, with static
mapping, otherwise.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

2 files changed, 5 insertions, 2 deletions

diff --git a/include/linux/mfd/max8998-private.h b/include/linux/mfd/max8998-private.h
index effa5d3b96ae..bfb48b6fcc74 100644
--- a/include/linux/mfd/max8998-private.h
+++ b/include/linux/mfd/max8998-private.h
@@ -132,6 +132,8 @@ enum {
 
 #define MAX8998_ENRAMP                  (1 << 4)
 
+struct irq_domain;
+
 /**
  * struct max8998_dev - max8998 master device for sub-drivers
  * @dev: master device of the chip (can be used to access platform data)
@@ -153,7 +155,8 @@ struct max8998_dev {
         struct mutex iolock;
         struct mutex irqlock;
 
-        int irq_base;
+        unsigned int irq_base;
+        struct irq_domain *irq_domain;
         int irq;
         int ono;
         u8 irq_masks_cur[MAX8998_NUM_IRQ_REGS];
diff --git a/include/linux/mfd/max8998.h b/include/linux/mfd/max8998.h
index 6823548d0c0a..75471183b87a 100644
--- a/include/linux/mfd/max8998.h
+++ b/include/linux/mfd/max8998.h
@@ -100,7 +100,7 @@ struct max8998_regulator_data {
 struct max8998_platform_data {
         struct max8998_regulator_data   *regulators;
         int                             num_regulators;
-        int                             irq_base;
+        unsigned int                    irq_base;
         int                             ono;
         bool                            buck_voltage_lock;
         int                             buck1_voltage1;