1 /*
2 * Intel Wireless WiMAX Connection 2400m
3 * Sysfs interfaces to show driver and device information
4 *
5 *
6 * Copyright (C) 2007 Intel Corporation <linux-wimax@intel.com>
7 * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License version
11 * 2 as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
22 */
23
24 #include <linux/netdevice.h>
25 #include <linux/etherdevice.h>
26 #include <linux/spinlock.h>
27 #include <linux/device.h>
28 #include "i2400m.h"
29
30
31 #define D_SUBMODULE sysfs
32 #include "debug-levels.h"
33
34
35 /*
36 * Set the idle timeout (msecs)
37 *
38 * FIXME: eventually this should be a common WiMAX stack method, but
39 * would like to wait to see how other devices manage it.
40 */
41 static
i2400m_idle_timeout_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t size)42 ssize_t i2400m_idle_timeout_store(struct device *dev,
43 struct device_attribute *attr,
44 const char *buf, size_t size)
45 {
46 ssize_t result;
47 struct i2400m *i2400m = net_dev_to_i2400m(to_net_dev(dev));
48 unsigned val;
49
50 result = -EINVAL;
51 if (sscanf(buf, "%u\n", &val) != 1)
52 goto error_no_unsigned;
53 if (val != 0 && (val < 100 || val > 300000 || val % 100 != 0)) {
54 dev_err(dev, "idle_timeout: %u: invalid msecs specification; "
55 "valid values are 0, 100-300000 in 100 increments\n",
56 val);
57 goto error_bad_value;
58 }
59 result = i2400m_set_idle_timeout(i2400m, val);
60 if (result >= 0)
61 result = size;
62 error_no_unsigned:
63 error_bad_value:
64 return result;
65 }
66
67 static
68 DEVICE_ATTR(i2400m_idle_timeout, S_IWUSR,
69 NULL, i2400m_idle_timeout_store);
70
71 static
72 struct attribute *i2400m_dev_attrs[] = {
73 &dev_attr_i2400m_idle_timeout.attr,
74 NULL,
75 };
76
77 struct attribute_group i2400m_dev_attr_group = {
78 .name = NULL, /* we want them in the same directory */
79 .attrs = i2400m_dev_attrs,
80 };
81