PWMCH_OFFSET 50 drivers/pwm/pwm-sun4i.c #define PWM_REG_PRESCAL(reg, chan) (((reg) >> ((chan) * PWMCH_OFFSET)) & PWM_PRESCAL_MASK) PWMCH_OFFSET 52 drivers/pwm/pwm-sun4i.c #define BIT_CH(bit, chan) ((bit) << ((chan) * PWMCH_OFFSET))