/*
   * PPS sysfs support
   *
   *
   * Copyright (C) 2007-2009   Rodolfo Giometti <giometti@linux.it>
   *
   *   This program is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by
   *   the Free Software Foundation; either version 2 of the License, or
   *   (at your option) any later version.
   *
   *   This program is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *   GNU General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License
   *   along with this program; if not, write to the Free Software
   *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   */
  
  
  #include <linux/device.h>
  #include <linux/module.h>
  #include <linux/string.h>
  #include <linux/pps_kernel.h>
  
  /*
   * Attribute functions
   */

  static ssize_t assert_show(struct device *dev, struct device_attribute *attr,
  			   char *buf)

  {
  	struct pps_device *pps = dev_get_drvdata(dev);
  
  	if (!(pps->info.mode & PPS_CAPTUREASSERT))
  		return 0;
  
  	return sprintf(buf, "%lld.%09d#%d
  ",
  			(long long) pps->assert_tu.sec, pps->assert_tu.nsec,
  			pps->assert_sequence);
  }

  static DEVICE_ATTR_RO(assert);

  static ssize_t clear_show(struct device *dev, struct device_attribute *attr,
  			  char *buf)

  {
  	struct pps_device *pps = dev_get_drvdata(dev);
  
  	if (!(pps->info.mode & PPS_CAPTURECLEAR))
  		return 0;
  
  	return sprintf(buf, "%lld.%09d#%d
  ",
  			(long long) pps->clear_tu.sec, pps->clear_tu.nsec,
  			pps->clear_sequence);
  }

  static DEVICE_ATTR_RO(clear);

  static ssize_t mode_show(struct device *dev, struct device_attribute *attr,
  			 char *buf)

  {
  	struct pps_device *pps = dev_get_drvdata(dev);
  
  	return sprintf(buf, "%4x
  ", pps->info.mode);
  }

  static DEVICE_ATTR_RO(mode);

  static ssize_t echo_show(struct device *dev, struct device_attribute *attr,
  			 char *buf)

  {
  	struct pps_device *pps = dev_get_drvdata(dev);
  
  	return sprintf(buf, "%d
  ", !!pps->info.echo);
  }

  static DEVICE_ATTR_RO(echo);

  static ssize_t name_show(struct device *dev, struct device_attribute *attr,
  			 char *buf)

  {
  	struct pps_device *pps = dev_get_drvdata(dev);
  
  	return sprintf(buf, "%s
  ", pps->info.name);
  }

  static DEVICE_ATTR_RO(name);

  static ssize_t path_show(struct device *dev, struct device_attribute *attr,
  			 char *buf)

  {
  	struct pps_device *pps = dev_get_drvdata(dev);
  
  	return sprintf(buf, "%s
  ", pps->info.path);
  }

  static DEVICE_ATTR_RO(path);
  
  static struct attribute *pps_attrs[] = {
  	&dev_attr_assert.attr,
  	&dev_attr_clear.attr,
  	&dev_attr_mode.attr,
  	&dev_attr_echo.attr,
  	&dev_attr_name.attr,
  	&dev_attr_path.attr,
  	NULL,
  };
  
  static const struct attribute_group pps_group = {
  	.attrs = pps_attrs,
  };

  const struct attribute_group *pps_groups[] = {
  	&pps_group,
  	NULL,

  };