1/*
2 * PPS sysfs support
3 *
4 *
5 * Copyright (C) 2007-2009   Rodolfo Giometti <giometti@linux.it>
6 *
7 *   This program is free software; you can redistribute it and/or modify
8 *   it under the terms of the GNU General Public License as published by
9 *   the Free Software Foundation; either version 2 of the License, or
10 *   (at your option) any later version.
11 *
12 *   This program is distributed in the hope that it will be useful,
13 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 *   GNU General Public License for more details.
16 *
17 *   You should have received a copy of the GNU General Public License
18 *   along with this program; if not, write to the Free Software
19 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22
23#include <linux/device.h>
24#include <linux/module.h>
25#include <linux/string.h>
26#include <linux/pps_kernel.h>
27
28/*
29 * Attribute functions
30 */
31
32static ssize_t assert_show(struct device *dev, struct device_attribute *attr,
33			   char *buf)
34{
35	struct pps_device *pps = dev_get_drvdata(dev);
36
37	if (!(pps->info.mode & PPS_CAPTUREASSERT))
38		return 0;
39
40	return sprintf(buf, "%lld.%09d#%d\n",
41			(long long) pps->assert_tu.sec, pps->assert_tu.nsec,
42			pps->assert_sequence);
43}
44static DEVICE_ATTR_RO(assert);
45
46static ssize_t clear_show(struct device *dev, struct device_attribute *attr,
47			  char *buf)
48{
49	struct pps_device *pps = dev_get_drvdata(dev);
50
51	if (!(pps->info.mode & PPS_CAPTURECLEAR))
52		return 0;
53
54	return sprintf(buf, "%lld.%09d#%d\n",
55			(long long) pps->clear_tu.sec, pps->clear_tu.nsec,
56			pps->clear_sequence);
57}
58static DEVICE_ATTR_RO(clear);
59
60static ssize_t mode_show(struct device *dev, struct device_attribute *attr,
61			 char *buf)
62{
63	struct pps_device *pps = dev_get_drvdata(dev);
64
65	return sprintf(buf, "%4x\n", pps->info.mode);
66}
67static DEVICE_ATTR_RO(mode);
68
69static ssize_t echo_show(struct device *dev, struct device_attribute *attr,
70			 char *buf)
71{
72	struct pps_device *pps = dev_get_drvdata(dev);
73
74	return sprintf(buf, "%d\n", !!pps->info.echo);
75}
76static DEVICE_ATTR_RO(echo);
77
78static ssize_t name_show(struct device *dev, struct device_attribute *attr,
79			 char *buf)
80{
81	struct pps_device *pps = dev_get_drvdata(dev);
82
83	return sprintf(buf, "%s\n", pps->info.name);
84}
85static DEVICE_ATTR_RO(name);
86
87static ssize_t path_show(struct device *dev, struct device_attribute *attr,
88			 char *buf)
89{
90	struct pps_device *pps = dev_get_drvdata(dev);
91
92	return sprintf(buf, "%s\n", pps->info.path);
93}
94static DEVICE_ATTR_RO(path);
95
96static struct attribute *pps_attrs[] = {
97	&dev_attr_assert.attr,
98	&dev_attr_clear.attr,
99	&dev_attr_mode.attr,
100	&dev_attr_echo.attr,
101	&dev_attr_name.attr,
102	&dev_attr_path.attr,
103	NULL,
104};
105
106static const struct attribute_group pps_group = {
107	.attrs = pps_attrs,
108};
109
110const struct attribute_group *pps_groups[] = {
111	&pps_group,
112	NULL,
113};
114