1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * PPS sysfs support
4 *
5 * Copyright (C) 2007-2009 Rodolfo Giometti <giometti@linux.it>
6 */
7
8
9#include <linux/device.h>
10#include <linux/module.h>
11#include <linux/string.h>
12#include <linux/pps_kernel.h>
13
14/*
15 * Attribute functions
16 */
17
18static ssize_t assert_show(struct device *dev, struct device_attribute *attr,
19 char *buf)
20{
21 struct pps_device *pps = dev_get_drvdata(dev);
22
23 if (!(pps->info.mode & PPS_CAPTUREASSERT))
24 return 0;
25
26 return sprintf(buf, fmt: "%lld.%09d#%d\n",
27 (long long) pps->assert_tu.sec, pps->assert_tu.nsec,
28 pps->assert_sequence);
29}
30static DEVICE_ATTR_RO(assert);
31
32static ssize_t clear_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_CAPTURECLEAR))
38 return 0;
39
40 return sprintf(buf, fmt: "%lld.%09d#%d\n",
41 (long long) pps->clear_tu.sec, pps->clear_tu.nsec,
42 pps->clear_sequence);
43}
44static DEVICE_ATTR_RO(clear);
45
46static ssize_t mode_show(struct device *dev, struct device_attribute *attr,
47 char *buf)
48{
49 struct pps_device *pps = dev_get_drvdata(dev);
50
51 return sprintf(buf, fmt: "%4x\n", pps->info.mode);
52}
53static DEVICE_ATTR_RO(mode);
54
55static ssize_t echo_show(struct device *dev, struct device_attribute *attr,
56 char *buf)
57{
58 struct pps_device *pps = dev_get_drvdata(dev);
59
60 return sprintf(buf, fmt: "%d\n", !!pps->info.echo);
61}
62static DEVICE_ATTR_RO(echo);
63
64static ssize_t name_show(struct device *dev, struct device_attribute *attr,
65 char *buf)
66{
67 struct pps_device *pps = dev_get_drvdata(dev);
68
69 return sprintf(buf, fmt: "%s\n", pps->info.name);
70}
71static DEVICE_ATTR_RO(name);
72
73static ssize_t path_show(struct device *dev, struct device_attribute *attr,
74 char *buf)
75{
76 struct pps_device *pps = dev_get_drvdata(dev);
77
78 return sprintf(buf, fmt: "%s\n", pps->info.path);
79}
80static DEVICE_ATTR_RO(path);
81
82static struct attribute *pps_attrs[] = {
83 &dev_attr_assert.attr,
84 &dev_attr_clear.attr,
85 &dev_attr_mode.attr,
86 &dev_attr_echo.attr,
87 &dev_attr_name.attr,
88 &dev_attr_path.attr,
89 NULL,
90};
91
92static const struct attribute_group pps_group = {
93 .attrs = pps_attrs,
94};
95
96const struct attribute_group *pps_groups[] = {
97 &pps_group,
98 NULL,
99};
100