AR5315_GPIOINTLVL_S
#define AR5315_GPIOINTLVL_M (3 << AR5315_GPIOINTLVL_S)
val |= 2 << AR5315_GPIOINTLVL_S; /* interrupt on pin high */
val |= 1 << AR5315_GPIOINTLVL_S; /* interrupt on pin low */