mfd: asic3: add asic3_set_register common operation

[linux-2.6.git] / drivers / mfd / asic3.c

diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c
index 9e48545..ad3c591 100644 (file)
--- 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 \