Alexander Aring | e23e9ec | 2014-10-28 18:21:32 +0100 | [diff] [blame^] | 1 | /* This program is free software; you can redistribute it and/or modify |
| 2 | * it under the terms of the GNU General Public License version 2 |
| 3 | * as published by the Free Software Foundation. |
| 4 | * |
| 5 | * This program is distributed in the hope that it will be useful, |
| 6 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 7 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 8 | * GNU General Public License for more details. |
| 9 | * |
| 10 | * Authors: |
| 11 | * Alexander Aring <aar@pengutronix.de> |
| 12 | * |
| 13 | * Based on: net/wireless/sysfs.c |
| 14 | */ |
| 15 | |
| 16 | #include <linux/device.h> |
| 17 | |
| 18 | #include <net/cfg802154.h> |
| 19 | |
| 20 | #define MASTER_SHOW_COMPLEX(name, format_string, args...) \ |
| 21 | static ssize_t name ## _show(struct device *dev, \ |
| 22 | struct device_attribute *attr, char *buf) \ |
| 23 | { \ |
| 24 | struct wpan_phy *phy = container_of(dev, struct wpan_phy, dev); \ |
| 25 | int ret; \ |
| 26 | \ |
| 27 | mutex_lock(&phy->pib_lock); \ |
| 28 | ret = snprintf(buf, PAGE_SIZE, format_string "\n", args); \ |
| 29 | mutex_unlock(&phy->pib_lock); \ |
| 30 | return ret; \ |
| 31 | } \ |
| 32 | static DEVICE_ATTR_RO(name) |
| 33 | |
| 34 | #define MASTER_SHOW(field, format_string) \ |
| 35 | MASTER_SHOW_COMPLEX(field, format_string, phy->field) |
| 36 | |
| 37 | MASTER_SHOW(current_channel, "%d"); |
| 38 | MASTER_SHOW(current_page, "%d"); |
| 39 | MASTER_SHOW(transmit_power, "%d +- 1 dB"); |
| 40 | MASTER_SHOW(cca_mode, "%d"); |
| 41 | |
| 42 | static ssize_t channels_supported_show(struct device *dev, |
| 43 | struct device_attribute *attr, |
| 44 | char *buf) |
| 45 | { |
| 46 | struct wpan_phy *phy = container_of(dev, struct wpan_phy, dev); |
| 47 | int ret; |
| 48 | int i, len = 0; |
| 49 | |
| 50 | mutex_lock(&phy->pib_lock); |
| 51 | for (i = 0; i < 32; i++) { |
| 52 | ret = snprintf(buf + len, PAGE_SIZE - len, |
| 53 | "%#09x\n", phy->channels_supported[i]); |
| 54 | if (ret < 0) |
| 55 | break; |
| 56 | len += ret; |
| 57 | } |
| 58 | mutex_unlock(&phy->pib_lock); |
| 59 | return len; |
| 60 | } |
| 61 | static DEVICE_ATTR_RO(channels_supported); |
| 62 | |
| 63 | static void wpan_phy_release(struct device *d) |
| 64 | { |
| 65 | struct wpan_phy *phy = container_of(d, struct wpan_phy, dev); |
| 66 | |
| 67 | kfree(phy); |
| 68 | } |
| 69 | |
| 70 | static struct attribute *pmib_attrs[] = { |
| 71 | &dev_attr_current_channel.attr, |
| 72 | &dev_attr_current_page.attr, |
| 73 | &dev_attr_channels_supported.attr, |
| 74 | &dev_attr_transmit_power.attr, |
| 75 | &dev_attr_cca_mode.attr, |
| 76 | NULL, |
| 77 | }; |
| 78 | ATTRIBUTE_GROUPS(pmib); |
| 79 | |
| 80 | struct class wpan_phy_class = { |
| 81 | .name = "ieee802154", |
| 82 | .dev_release = wpan_phy_release, |
| 83 | .dev_groups = pmib_groups, |
| 84 | }; |
| 85 | |
| 86 | int wpan_phy_sysfs_init(void) |
| 87 | { |
| 88 | return class_register(&wpan_phy_class); |
| 89 | } |
| 90 | |
| 91 | void wpan_phy_sysfs_exit(void) |
| 92 | { |
| 93 | class_unregister(&wpan_phy_class); |
| 94 | } |