pwm_loongson_readl
val = pwm_loongson_readl(ddata, LOONGSON_PWM_REG_CTRL);
val = pwm_loongson_readl(ddata, LOONGSON_PWM_REG_CTRL);
duty = pwm_loongson_readl(ddata, LOONGSON_PWM_REG_DUTY);
period = pwm_loongson_readl(ddata, LOONGSON_PWM_REG_PERIOD);
ctrl = pwm_loongson_readl(ddata, LOONGSON_PWM_REG_CTRL);
val = pwm_loongson_readl(ddata, LOONGSON_PWM_REG_CTRL);