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