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-rw-r--r--drivers/mfd/asic3.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c
index 9e485459f63b..ad3c59135990 100644
--- a/drivers/mfd/asic3.c
+++ b/drivers/mfd/asic3.c
@@ -52,6 +52,21 @@ static inline u32 asic3_read_register(struct asic3 *asic,
(reg >> asic->bus_shift));
}
+void asic3_set_register(struct asic3 *asic, u32 reg, u32 bits, bool set)
+{
+ unsigned long flags;
+ u32 val;
+
+ spin_lock_irqsave(&asic->lock, flags);
+ val = asic3_read_register(asic, reg);
+ if (set)
+ val |= bits;
+ else
+ val &= ~bits;
+ asic3_write_register(asic, reg, val);
+ spin_unlock_irqrestore(&asic->lock, flags);
+}
+
/* IRQs */
#define MAX_ASIC_ISR_LOOPS 20
#define ASIC3_GPIO_BASE_INCR \