]> nv-tegra.nvidia Code Review - linux-2.6.git/blob - drivers/pps/sysfs.c
connector: Removed the destruct_data callback since it is always kfree_skb()
[linux-2.6.git] / drivers / pps / sysfs.c
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 };