ALTR_A10SR_BITS_PER_REGISTER 30 include/linux/mfd/altera-a10sr.h #define ALTR_A10SR_REG_OFFSET(X) (((X) / ALTR_A10SR_BITS_PER_REGISTER) << 1) ALTR_A10SR_BITS_PER_REGISTER 31 include/linux/mfd/altera-a10sr.h #define ALTR_A10SR_REG_BIT(X) ((X) % ALTR_A10SR_BITS_PER_REGISTER)