mfd: tps65217: Add support for IRQs

Add support for handling IRQs: power button, AC and USB power state
changes. Mask and interrupt bits are shared within one register, which
prevents us to use regmap_irq implementation. New irq_domain is created in
order to add interrupt handling for each tps65217's subsystem. IRQ
resources have been added for charger subsystem to be able to notify about
AC and USB state changes.

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/mfd/tps65217.h b/include/linux/mfd/tps65217.h
index 1c88231496d3..4ccda8969639 100644
--- a/include/linux/mfd/tps65217.h
+++ b/include/linux/mfd/tps65217.h
@@ -73,6 +73,7 @@
 #define TPS65217_PPATH_AC_CURRENT_MASK  0x0C
 #define TPS65217_PPATH_USB_CURRENT_MASK 0x03
 
+#define TPS65217_INT_RESERVEDM          BIT(7)
 #define TPS65217_INT_PBM                BIT(6)
 #define TPS65217_INT_ACM                BIT(5)
 #define TPS65217_INT_USBM               BIT(4)
@@ -233,6 +234,13 @@ struct tps65217_bl_pdata {
         int dft_brightness;
 };
 
+enum tps65217_irq_type {
+        TPS65217_IRQ_PB,
+        TPS65217_IRQ_AC,
+        TPS65217_IRQ_USB,
+        TPS65217_NUM_IRQ
+};
+
 /**
  * struct tps65217_board - packages regulator init data
  * @tps65217_regulator_data: regulator initialization values
@@ -258,6 +266,10 @@ struct tps65217 {
         struct regulator_desc desc[TPS65217_NUM_REGULATOR];
         struct regmap *regmap;
         u8 *strobes;
+        struct irq_domain *irq_domain;
+        struct mutex irq_lock;
+        u8 irq_mask;
+        int irq;
 };
 
 static inline struct tps65217 *dev_to_tps65217(struct device *dev)