Merge branch 'drm-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied...
[linux-2.6] / net / mac80211 / ieee80211_led.c
1 /*
2  * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  */
8
9 /* just for IFNAMSIZ */
10 #include <linux/if.h>
11 #include "ieee80211_led.h"
12
13 void ieee80211_led_rx(struct ieee80211_local *local)
14 {
15         if (unlikely(!local->rx_led))
16                 return;
17         if (local->rx_led_counter++ % 2 == 0)
18                 led_trigger_event(local->rx_led, LED_OFF);
19         else
20                 led_trigger_event(local->rx_led, LED_FULL);
21 }
22
23 /* q is 1 if a packet was enqueued, 0 if it has been transmitted */
24 void ieee80211_led_tx(struct ieee80211_local *local, int q)
25 {
26         if (unlikely(!local->tx_led))
27                 return;
28         /* not sure how this is supposed to work ... */
29         local->tx_led_counter += 2*q-1;
30         if (local->tx_led_counter % 2 == 0)
31                 led_trigger_event(local->tx_led, LED_OFF);
32         else
33                 led_trigger_event(local->tx_led, LED_FULL);
34 }
35
36 void ieee80211_led_init(struct ieee80211_local *local)
37 {
38         local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
39         if (!local->rx_led)
40                 return;
41         snprintf(local->rx_led_name, sizeof(local->rx_led_name),
42                  "%srx", wiphy_name(local->hw.wiphy));
43         local->rx_led->name = local->rx_led_name;
44         if (led_trigger_register(local->rx_led)) {
45                 kfree(local->rx_led);
46                 local->rx_led = NULL;
47         }
48
49         local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
50         if (!local->tx_led)
51                 return;
52         snprintf(local->tx_led_name, sizeof(local->tx_led_name),
53                  "%stx", wiphy_name(local->hw.wiphy));
54         local->tx_led->name = local->tx_led_name;
55         if (led_trigger_register(local->tx_led)) {
56                 kfree(local->tx_led);
57                 local->tx_led = NULL;
58         }
59 }
60
61 void ieee80211_led_exit(struct ieee80211_local *local)
62 {
63         if (local->tx_led) {
64                 led_trigger_unregister(local->tx_led);
65                 kfree(local->tx_led);
66         }
67         if (local->rx_led) {
68                 led_trigger_unregister(local->rx_led);
69                 kfree(local->rx_led);
70         }
71 }
72
73 char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
74 {
75         struct ieee80211_local *local = hw_to_local(hw);
76
77         if (local->tx_led)
78                 return local->tx_led_name;
79         return NULL;
80 }
81 EXPORT_SYMBOL(__ieee80211_get_tx_led_name);
82
83 char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
84 {
85         struct ieee80211_local *local = hw_to_local(hw);
86
87         if (local->rx_led)
88                 return local->rx_led_name;
89         return NULL;
90 }
91 EXPORT_SYMBOL(__ieee80211_get_rx_led_name);