vringh: add 'iotlb_lock' to synchronize iotlb accesses
[linux-2.6-microblaze.git] / drivers / pps / sysfs.c
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
18 static 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, "%lld.%09d#%d\n",
27                         (long long) pps->assert_tu.sec, pps->assert_tu.nsec,
28                         pps->assert_sequence);
29 }
30 static DEVICE_ATTR_RO(assert);
31
32 static 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, "%lld.%09d#%d\n",
41                         (long long) pps->clear_tu.sec, pps->clear_tu.nsec,
42                         pps->clear_sequence);
43 }
44 static DEVICE_ATTR_RO(clear);
45
46 static 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, "%4x\n", pps->info.mode);
52 }
53 static DEVICE_ATTR_RO(mode);
54
55 static 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, "%d\n", !!pps->info.echo);
61 }
62 static DEVICE_ATTR_RO(echo);
63
64 static 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, "%s\n", pps->info.name);
70 }
71 static DEVICE_ATTR_RO(name);
72
73 static 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, "%s\n", pps->info.path);
79 }
80 static DEVICE_ATTR_RO(path);
81
82 static 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
92 static const struct attribute_group pps_group = {
93         .attrs = pps_attrs,
94 };
95
96 const struct attribute_group *pps_groups[] = {
97         &pps_group,
98         NULL,
99 };