pwm_get_state_hw
ret = pwm_get_state_hw(clk_pwm->pwm, &state);
ret = pwm_get_state_hw(st->cnv_pwm, &state);
err = pwm_get_state_hw(pwm, &hwstate);
EXPORT_SYMBOL_GPL(pwm_get_state_hw);
err = pwm_get_state_hw(pwm, &state);
int pwm_get_state_hw(struct pwm_device *pwm, struct pwm_state *state);