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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 | |
32 | static ssize_t pps_show_assert(struct device *dev, |
33 | struct device_attribute *attr, 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 | } |
44 | |
45 | static ssize_t pps_show_clear(struct device *dev, |
46 | struct device_attribute *attr, char *buf) |
47 | { |
48 | struct pps_device *pps = dev_get_drvdata(dev); |
49 | |
50 | if (!(pps->info.mode & PPS_CAPTURECLEAR)) |
51 | return 0; |
52 | |
53 | return sprintf(buf, "%lld.%09d#%d\n", |
54 | (long long) pps->clear_tu.sec, pps->clear_tu.nsec, |
55 | pps->clear_sequence); |
56 | } |
57 | |
58 | static ssize_t pps_show_mode(struct device *dev, |
59 | struct device_attribute *attr, char *buf) |
60 | { |
61 | struct pps_device *pps = dev_get_drvdata(dev); |
62 | |
63 | return sprintf(buf, "%4x\n", pps->info.mode); |
64 | } |
65 | |
66 | static ssize_t pps_show_echo(struct device *dev, |
67 | struct device_attribute *attr, char *buf) |
68 | { |
69 | struct pps_device *pps = dev_get_drvdata(dev); |
70 | |
71 | return sprintf(buf, "%d\n", !!pps->info.echo); |
72 | } |
73 | |
74 | static ssize_t pps_show_name(struct device *dev, |
75 | struct device_attribute *attr, char *buf) |
76 | { |
77 | struct pps_device *pps = dev_get_drvdata(dev); |
78 | |
79 | return sprintf(buf, "%s\n", pps->info.name); |
80 | } |
81 | |
82 | static ssize_t pps_show_path(struct device *dev, |
83 | struct device_attribute *attr, char *buf) |
84 | { |
85 | struct pps_device *pps = dev_get_drvdata(dev); |
86 | |
87 | return sprintf(buf, "%s\n", pps->info.path); |
88 | } |
89 | |
90 | struct device_attribute pps_attrs[] = { |
91 | __ATTR(assert, S_IRUGO, pps_show_assert, NULL), |
92 | __ATTR(clear, S_IRUGO, pps_show_clear, NULL), |
93 | __ATTR(mode, S_IRUGO, pps_show_mode, NULL), |
94 | __ATTR(echo, S_IRUGO, pps_show_echo, NULL), |
95 | __ATTR(name, S_IRUGO, pps_show_name, NULL), |
96 | __ATTR(path, S_IRUGO, pps_show_path, NULL), |
97 | __ATTR_NULL, |
98 | }; |
99 |
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