1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * PPS sysfs support
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2007-2009 Rodolfo Giometti <giometti@linux.it>
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/device.h>
10*4882a593Smuzhiyun #include <linux/module.h>
11*4882a593Smuzhiyun #include <linux/string.h>
12*4882a593Smuzhiyun #include <linux/pps_kernel.h>
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun /*
15*4882a593Smuzhiyun * Attribute functions
16*4882a593Smuzhiyun */
17*4882a593Smuzhiyun
assert_show(struct device * dev,struct device_attribute * attr,char * buf)18*4882a593Smuzhiyun static ssize_t assert_show(struct device *dev, struct device_attribute *attr,
19*4882a593Smuzhiyun char *buf)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun struct pps_device *pps = dev_get_drvdata(dev);
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun if (!(pps->info.mode & PPS_CAPTUREASSERT))
24*4882a593Smuzhiyun return 0;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun return sprintf(buf, "%lld.%09d#%d\n",
27*4882a593Smuzhiyun (long long) pps->assert_tu.sec, pps->assert_tu.nsec,
28*4882a593Smuzhiyun pps->assert_sequence);
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun static DEVICE_ATTR_RO(assert);
31*4882a593Smuzhiyun
clear_show(struct device * dev,struct device_attribute * attr,char * buf)32*4882a593Smuzhiyun static ssize_t clear_show(struct device *dev, struct device_attribute *attr,
33*4882a593Smuzhiyun char *buf)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun struct pps_device *pps = dev_get_drvdata(dev);
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun if (!(pps->info.mode & PPS_CAPTURECLEAR))
38*4882a593Smuzhiyun return 0;
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun return sprintf(buf, "%lld.%09d#%d\n",
41*4882a593Smuzhiyun (long long) pps->clear_tu.sec, pps->clear_tu.nsec,
42*4882a593Smuzhiyun pps->clear_sequence);
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun static DEVICE_ATTR_RO(clear);
45*4882a593Smuzhiyun
mode_show(struct device * dev,struct device_attribute * attr,char * buf)46*4882a593Smuzhiyun static ssize_t mode_show(struct device *dev, struct device_attribute *attr,
47*4882a593Smuzhiyun char *buf)
48*4882a593Smuzhiyun {
49*4882a593Smuzhiyun struct pps_device *pps = dev_get_drvdata(dev);
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun return sprintf(buf, "%4x\n", pps->info.mode);
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun static DEVICE_ATTR_RO(mode);
54*4882a593Smuzhiyun
echo_show(struct device * dev,struct device_attribute * attr,char * buf)55*4882a593Smuzhiyun static ssize_t echo_show(struct device *dev, struct device_attribute *attr,
56*4882a593Smuzhiyun char *buf)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun struct pps_device *pps = dev_get_drvdata(dev);
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun return sprintf(buf, "%d\n", !!pps->info.echo);
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun static DEVICE_ATTR_RO(echo);
63*4882a593Smuzhiyun
name_show(struct device * dev,struct device_attribute * attr,char * buf)64*4882a593Smuzhiyun static ssize_t name_show(struct device *dev, struct device_attribute *attr,
65*4882a593Smuzhiyun char *buf)
66*4882a593Smuzhiyun {
67*4882a593Smuzhiyun struct pps_device *pps = dev_get_drvdata(dev);
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun return sprintf(buf, "%s\n", pps->info.name);
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun static DEVICE_ATTR_RO(name);
72*4882a593Smuzhiyun
path_show(struct device * dev,struct device_attribute * attr,char * buf)73*4882a593Smuzhiyun static ssize_t path_show(struct device *dev, struct device_attribute *attr,
74*4882a593Smuzhiyun char *buf)
75*4882a593Smuzhiyun {
76*4882a593Smuzhiyun struct pps_device *pps = dev_get_drvdata(dev);
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun return sprintf(buf, "%s\n", pps->info.path);
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun static DEVICE_ATTR_RO(path);
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun static struct attribute *pps_attrs[] = {
83*4882a593Smuzhiyun &dev_attr_assert.attr,
84*4882a593Smuzhiyun &dev_attr_clear.attr,
85*4882a593Smuzhiyun &dev_attr_mode.attr,
86*4882a593Smuzhiyun &dev_attr_echo.attr,
87*4882a593Smuzhiyun &dev_attr_name.attr,
88*4882a593Smuzhiyun &dev_attr_path.attr,
89*4882a593Smuzhiyun NULL,
90*4882a593Smuzhiyun };
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun static const struct attribute_group pps_group = {
93*4882a593Smuzhiyun .attrs = pps_attrs,
94*4882a593Smuzhiyun };
95*4882a593Smuzhiyun
96*4882a593Smuzhiyun const struct attribute_group *pps_groups[] = {
97*4882a593Smuzhiyun &pps_group,
98*4882a593Smuzhiyun NULL,
99*4882a593Smuzhiyun };
100