/*
   * Copyright (c) 2016 Google, Inc
   * Written by Simon Glass <sjg@chromium.org>
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <common.h>
  #include <dm.h>
  #include <pwm.h>
  
  int pwm_set_invert(struct udevice *dev, uint channel, bool polarity)
  {
  	struct pwm_ops *ops = pwm_get_ops(dev);
  
  	if (!ops->set_invert)
  		return -ENOSYS;
  
  	return ops->set_invert(dev, channel, polarity);
  }
  
  int pwm_set_config(struct udevice *dev, uint channel, uint period_ns,
  		   uint duty_ns)
  {
  	struct pwm_ops *ops = pwm_get_ops(dev);
  
  	if (!ops->set_config)
  		return -ENOSYS;
  
  	return ops->set_config(dev, channel, period_ns, duty_ns);
  }
  
  int pwm_set_enable(struct udevice *dev, uint channel, bool enable)
  {
  	struct pwm_ops *ops = pwm_get_ops(dev);
  
  	if (!ops->set_enable)
  		return -ENOSYS;
  
  	return ops->set_enable(dev, channel, enable);
  }
  
  UCLASS_DRIVER(pwm) = {
  	.id		= UCLASS_PWM,
  	.name		= "pwm",
  };