| Inaky Perez-Gonzalez | 8987691 | 2009-02-28 23:42:50 +0000 | [diff] [blame] | 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 |
| 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 | }; |