IPROC_PWM_CTRL_POLARITY_SHIFT
value |= 1 << IPROC_PWM_CTRL_POLARITY_SHIFT(pwm->hwpwm);
value &= ~(1 << IPROC_PWM_CTRL_POLARITY_SHIFT(pwm->hwpwm));
value |= 1 << IPROC_PWM_CTRL_POLARITY_SHIFT(i);
if (value & BIT(IPROC_PWM_CTRL_POLARITY_SHIFT(pwm->hwpwm)))