PWM_POLARITY_MASK   27 drivers/pwm/pwm-hibvt.c #define PWM_POLARITY_MASK   BIT(1)
PWM_POLARITY_MASK   27 drivers/pwm/pwm-rockchip.c #define PWM_POLARITY_MASK	(PWM_DUTY_POSITIVE | PWM_INACTIVE_POSITIVE)