Commit | Line | Data |
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f0706e82 JB |
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> | |
5a0e3ad6 | 11 | #include <linux/slab.h> |
bc3b2d7f | 12 | #include <linux/export.h> |
2c8dccc7 | 13 | #include "led.h" |
f0706e82 | 14 | |
47f0c502 MB |
15 | void ieee80211_led_assoc(struct ieee80211_local *local, bool associated) |
16 | { | |
8d5c2585 | 17 | if (!atomic_read(&local->assoc_led_active)) |
47f0c502 MB |
18 | return; |
19 | if (associated) | |
8d5c2585 | 20 | led_trigger_event(&local->assoc_led, LED_FULL); |
47f0c502 | 21 | else |
8d5c2585 | 22 | led_trigger_event(&local->assoc_led, LED_OFF); |
47f0c502 MB |
23 | } |
24 | ||
cdcb006f ID |
25 | void ieee80211_led_radio(struct ieee80211_local *local, bool enabled) |
26 | { | |
8d5c2585 | 27 | if (!atomic_read(&local->radio_led_active)) |
cdcb006f ID |
28 | return; |
29 | if (enabled) | |
8d5c2585 | 30 | led_trigger_event(&local->radio_led, LED_FULL); |
cdcb006f | 31 | else |
8d5c2585 JB |
32 | led_trigger_event(&local->radio_led, LED_OFF); |
33 | } | |
34 | ||
35 | void ieee80211_alloc_led_names(struct ieee80211_local *local) | |
36 | { | |
37 | local->rx_led.name = kasprintf(GFP_KERNEL, "%srx", | |
38 | wiphy_name(local->hw.wiphy)); | |
39 | local->tx_led.name = kasprintf(GFP_KERNEL, "%stx", | |
40 | wiphy_name(local->hw.wiphy)); | |
41 | local->assoc_led.name = kasprintf(GFP_KERNEL, "%sassoc", | |
42 | wiphy_name(local->hw.wiphy)); | |
43 | local->radio_led.name = kasprintf(GFP_KERNEL, "%sradio", | |
44 | wiphy_name(local->hw.wiphy)); | |
45 | } | |
46 | ||
47 | void ieee80211_free_led_names(struct ieee80211_local *local) | |
48 | { | |
49 | kfree(local->rx_led.name); | |
50 | kfree(local->tx_led.name); | |
51 | kfree(local->assoc_led.name); | |
52 | kfree(local->radio_led.name); | |
53 | } | |
54 | ||
55 | static void ieee80211_tx_led_activate(struct led_classdev *led_cdev) | |
56 | { | |
57 | struct ieee80211_local *local = container_of(led_cdev->trigger, | |
58 | struct ieee80211_local, | |
59 | tx_led); | |
60 | ||
61 | atomic_inc(&local->tx_led_active); | |
62 | } | |
63 | ||
64 | static void ieee80211_tx_led_deactivate(struct led_classdev *led_cdev) | |
65 | { | |
66 | struct ieee80211_local *local = container_of(led_cdev->trigger, | |
67 | struct ieee80211_local, | |
68 | tx_led); | |
69 | ||
70 | atomic_dec(&local->tx_led_active); | |
71 | } | |
72 | ||
73 | static void ieee80211_rx_led_activate(struct led_classdev *led_cdev) | |
74 | { | |
75 | struct ieee80211_local *local = container_of(led_cdev->trigger, | |
76 | struct ieee80211_local, | |
77 | rx_led); | |
78 | ||
79 | atomic_inc(&local->rx_led_active); | |
80 | } | |
81 | ||
82 | static void ieee80211_rx_led_deactivate(struct led_classdev *led_cdev) | |
83 | { | |
84 | struct ieee80211_local *local = container_of(led_cdev->trigger, | |
85 | struct ieee80211_local, | |
86 | rx_led); | |
87 | ||
88 | atomic_dec(&local->rx_led_active); | |
89 | } | |
90 | ||
91 | static void ieee80211_assoc_led_activate(struct led_classdev *led_cdev) | |
92 | { | |
93 | struct ieee80211_local *local = container_of(led_cdev->trigger, | |
94 | struct ieee80211_local, | |
95 | assoc_led); | |
96 | ||
97 | atomic_inc(&local->assoc_led_active); | |
98 | } | |
99 | ||
100 | static void ieee80211_assoc_led_deactivate(struct led_classdev *led_cdev) | |
101 | { | |
102 | struct ieee80211_local *local = container_of(led_cdev->trigger, | |
103 | struct ieee80211_local, | |
104 | assoc_led); | |
105 | ||
106 | atomic_dec(&local->assoc_led_active); | |
107 | } | |
108 | ||
109 | static void ieee80211_radio_led_activate(struct led_classdev *led_cdev) | |
110 | { | |
111 | struct ieee80211_local *local = container_of(led_cdev->trigger, | |
112 | struct ieee80211_local, | |
113 | radio_led); | |
114 | ||
115 | atomic_inc(&local->radio_led_active); | |
116 | } | |
117 | ||
118 | static void ieee80211_radio_led_deactivate(struct led_classdev *led_cdev) | |
119 | { | |
120 | struct ieee80211_local *local = container_of(led_cdev->trigger, | |
121 | struct ieee80211_local, | |
122 | radio_led); | |
123 | ||
124 | atomic_dec(&local->radio_led_active); | |
125 | } | |
126 | ||
127 | static void ieee80211_tpt_led_activate(struct led_classdev *led_cdev) | |
128 | { | |
129 | struct ieee80211_local *local = container_of(led_cdev->trigger, | |
130 | struct ieee80211_local, | |
131 | tpt_led); | |
132 | ||
133 | atomic_inc(&local->tpt_led_active); | |
cdcb006f ID |
134 | } |
135 | ||
8d5c2585 | 136 | static void ieee80211_tpt_led_deactivate(struct led_classdev *led_cdev) |
fe67c913 | 137 | { |
8d5c2585 JB |
138 | struct ieee80211_local *local = container_of(led_cdev->trigger, |
139 | struct ieee80211_local, | |
140 | tpt_led); | |
141 | ||
142 | atomic_dec(&local->tpt_led_active); | |
fe67c913 JB |
143 | } |
144 | ||
f0706e82 JB |
145 | void ieee80211_led_init(struct ieee80211_local *local) |
146 | { | |
8d5c2585 JB |
147 | atomic_set(&local->rx_led_active, 0); |
148 | local->rx_led.activate = ieee80211_rx_led_activate; | |
149 | local->rx_led.deactivate = ieee80211_rx_led_deactivate; | |
150 | if (local->rx_led.name && led_trigger_register(&local->rx_led)) { | |
151 | kfree(local->rx_led.name); | |
152 | local->rx_led.name = NULL; | |
f0706e82 JB |
153 | } |
154 | ||
8d5c2585 JB |
155 | atomic_set(&local->tx_led_active, 0); |
156 | local->tx_led.activate = ieee80211_tx_led_activate; | |
157 | local->tx_led.deactivate = ieee80211_tx_led_deactivate; | |
158 | if (local->tx_led.name && led_trigger_register(&local->tx_led)) { | |
159 | kfree(local->tx_led.name); | |
160 | local->tx_led.name = NULL; | |
47f0c502 MB |
161 | } |
162 | ||
8d5c2585 JB |
163 | atomic_set(&local->assoc_led_active, 0); |
164 | local->assoc_led.activate = ieee80211_assoc_led_activate; | |
165 | local->assoc_led.deactivate = ieee80211_assoc_led_deactivate; | |
166 | if (local->assoc_led.name && led_trigger_register(&local->assoc_led)) { | |
167 | kfree(local->assoc_led.name); | |
168 | local->assoc_led.name = NULL; | |
f0706e82 | 169 | } |
cdcb006f | 170 | |
8d5c2585 JB |
171 | atomic_set(&local->radio_led_active, 0); |
172 | local->radio_led.activate = ieee80211_radio_led_activate; | |
173 | local->radio_led.deactivate = ieee80211_radio_led_deactivate; | |
174 | if (local->radio_led.name && led_trigger_register(&local->radio_led)) { | |
175 | kfree(local->radio_led.name); | |
176 | local->radio_led.name = NULL; | |
cdcb006f | 177 | } |
e1e54068 | 178 | |
8d5c2585 | 179 | atomic_set(&local->tpt_led_active, 0); |
e1e54068 | 180 | if (local->tpt_led_trigger) { |
8d5c2585 JB |
181 | local->tpt_led.activate = ieee80211_tpt_led_activate; |
182 | local->tpt_led.deactivate = ieee80211_tpt_led_deactivate; | |
183 | if (led_trigger_register(&local->tpt_led)) { | |
e1e54068 JB |
184 | kfree(local->tpt_led_trigger); |
185 | local->tpt_led_trigger = NULL; | |
186 | } | |
187 | } | |
f0706e82 JB |
188 | } |
189 | ||
190 | void ieee80211_led_exit(struct ieee80211_local *local) | |
191 | { | |
8d5c2585 JB |
192 | if (local->radio_led.name) |
193 | led_trigger_unregister(&local->radio_led); | |
194 | if (local->assoc_led.name) | |
195 | led_trigger_unregister(&local->assoc_led); | |
196 | if (local->tx_led.name) | |
197 | led_trigger_unregister(&local->tx_led); | |
198 | if (local->rx_led.name) | |
199 | led_trigger_unregister(&local->rx_led); | |
e1e54068 JB |
200 | |
201 | if (local->tpt_led_trigger) { | |
8d5c2585 | 202 | led_trigger_unregister(&local->tpt_led); |
e1e54068 JB |
203 | kfree(local->tpt_led_trigger); |
204 | } | |
f0706e82 JB |
205 | } |
206 | ||
f5c4ae07 | 207 | const char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw) |
cdcb006f ID |
208 | { |
209 | struct ieee80211_local *local = hw_to_local(hw); | |
210 | ||
8d5c2585 | 211 | return local->radio_led.name; |
cdcb006f ID |
212 | } |
213 | EXPORT_SYMBOL(__ieee80211_get_radio_led_name); | |
214 | ||
f5c4ae07 | 215 | const char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) |
47f0c502 MB |
216 | { |
217 | struct ieee80211_local *local = hw_to_local(hw); | |
218 | ||
8d5c2585 | 219 | return local->assoc_led.name; |
47f0c502 MB |
220 | } |
221 | EXPORT_SYMBOL(__ieee80211_get_assoc_led_name); | |
222 | ||
f5c4ae07 | 223 | const char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw) |
f0706e82 JB |
224 | { |
225 | struct ieee80211_local *local = hw_to_local(hw); | |
226 | ||
8d5c2585 | 227 | return local->tx_led.name; |
f0706e82 JB |
228 | } |
229 | EXPORT_SYMBOL(__ieee80211_get_tx_led_name); | |
230 | ||
f5c4ae07 | 231 | const char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw) |
f0706e82 JB |
232 | { |
233 | struct ieee80211_local *local = hw_to_local(hw); | |
234 | ||
8d5c2585 | 235 | return local->rx_led.name; |
f0706e82 JB |
236 | } |
237 | EXPORT_SYMBOL(__ieee80211_get_rx_led_name); | |
e1e54068 JB |
238 | |
239 | static unsigned long tpt_trig_traffic(struct ieee80211_local *local, | |
240 | struct tpt_led_trigger *tpt_trig) | |
241 | { | |
242 | unsigned long traffic, delta; | |
243 | ||
244 | traffic = tpt_trig->tx_bytes + tpt_trig->rx_bytes; | |
245 | ||
246 | delta = traffic - tpt_trig->prev_traffic; | |
247 | tpt_trig->prev_traffic = traffic; | |
248 | return DIV_ROUND_UP(delta, 1024 / 8); | |
249 | } | |
250 | ||
251 | static void tpt_trig_timer(unsigned long data) | |
252 | { | |
253 | struct ieee80211_local *local = (void *)data; | |
254 | struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger; | |
255 | struct led_classdev *led_cdev; | |
256 | unsigned long on, off, tpt; | |
257 | int i; | |
258 | ||
259 | if (!tpt_trig->running) | |
260 | return; | |
261 | ||
262 | mod_timer(&tpt_trig->timer, round_jiffies(jiffies + HZ)); | |
263 | ||
264 | tpt = tpt_trig_traffic(local, tpt_trig); | |
265 | ||
266 | /* default to just solid on */ | |
267 | on = 1; | |
268 | off = 0; | |
269 | ||
270 | for (i = tpt_trig->blink_table_len - 1; i >= 0; i--) { | |
271 | if (tpt_trig->blink_table[i].throughput < 0 || | |
272 | tpt > tpt_trig->blink_table[i].throughput) { | |
273 | off = tpt_trig->blink_table[i].blink_time / 2; | |
274 | on = tpt_trig->blink_table[i].blink_time - off; | |
275 | break; | |
276 | } | |
277 | } | |
278 | ||
658358ce JB |
279 | read_lock(&local->tpt_led.leddev_list_lock); |
280 | list_for_each_entry(led_cdev, &local->tpt_led.led_cdevs, trig_list) | |
e1e54068 | 281 | led_blink_set(led_cdev, &on, &off); |
658358ce | 282 | read_unlock(&local->tpt_led.leddev_list_lock); |
e1e54068 JB |
283 | } |
284 | ||
f5c4ae07 JB |
285 | const char * |
286 | __ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw, | |
287 | unsigned int flags, | |
288 | const struct ieee80211_tpt_blink *blink_table, | |
289 | unsigned int blink_table_len) | |
e1e54068 JB |
290 | { |
291 | struct ieee80211_local *local = hw_to_local(hw); | |
292 | struct tpt_led_trigger *tpt_trig; | |
293 | ||
294 | if (WARN_ON(local->tpt_led_trigger)) | |
295 | return NULL; | |
296 | ||
297 | tpt_trig = kzalloc(sizeof(struct tpt_led_trigger), GFP_KERNEL); | |
298 | if (!tpt_trig) | |
299 | return NULL; | |
300 | ||
301 | snprintf(tpt_trig->name, sizeof(tpt_trig->name), | |
302 | "%stpt", wiphy_name(local->hw.wiphy)); | |
303 | ||
8d5c2585 | 304 | local->tpt_led.name = tpt_trig->name; |
e1e54068 JB |
305 | |
306 | tpt_trig->blink_table = blink_table; | |
307 | tpt_trig->blink_table_len = blink_table_len; | |
67408c8c | 308 | tpt_trig->want = flags; |
e1e54068 JB |
309 | |
310 | setup_timer(&tpt_trig->timer, tpt_trig_timer, (unsigned long)local); | |
311 | ||
312 | local->tpt_led_trigger = tpt_trig; | |
313 | ||
314 | return tpt_trig->name; | |
315 | } | |
316 | EXPORT_SYMBOL(__ieee80211_create_tpt_led_trigger); | |
317 | ||
67408c8c | 318 | static void ieee80211_start_tpt_led_trig(struct ieee80211_local *local) |
e1e54068 JB |
319 | { |
320 | struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger; | |
321 | ||
67408c8c | 322 | if (tpt_trig->running) |
e1e54068 JB |
323 | return; |
324 | ||
325 | /* reset traffic */ | |
326 | tpt_trig_traffic(local, tpt_trig); | |
327 | tpt_trig->running = true; | |
328 | ||
329 | tpt_trig_timer((unsigned long)local); | |
330 | mod_timer(&tpt_trig->timer, round_jiffies(jiffies + HZ)); | |
331 | } | |
332 | ||
67408c8c | 333 | static void ieee80211_stop_tpt_led_trig(struct ieee80211_local *local) |
e1e54068 JB |
334 | { |
335 | struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger; | |
336 | struct led_classdev *led_cdev; | |
337 | ||
67408c8c | 338 | if (!tpt_trig->running) |
e1e54068 JB |
339 | return; |
340 | ||
341 | tpt_trig->running = false; | |
342 | del_timer_sync(&tpt_trig->timer); | |
343 | ||
658358ce JB |
344 | read_lock(&local->tpt_led.leddev_list_lock); |
345 | list_for_each_entry(led_cdev, &local->tpt_led.led_cdevs, trig_list) | |
19cd67e2 | 346 | led_set_brightness(led_cdev, LED_OFF); |
658358ce | 347 | read_unlock(&local->tpt_led.leddev_list_lock); |
e1e54068 | 348 | } |
67408c8c JB |
349 | |
350 | void ieee80211_mod_tpt_led_trig(struct ieee80211_local *local, | |
351 | unsigned int types_on, unsigned int types_off) | |
352 | { | |
353 | struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger; | |
354 | bool allowed; | |
355 | ||
356 | WARN_ON(types_on & types_off); | |
357 | ||
358 | if (!tpt_trig) | |
359 | return; | |
360 | ||
361 | tpt_trig->active &= ~types_off; | |
362 | tpt_trig->active |= types_on; | |
363 | ||
364 | /* | |
365 | * Regardless of wanted state, we shouldn't blink when | |
366 | * the radio is disabled -- this can happen due to some | |
367 | * code ordering issues with __ieee80211_recalc_idle() | |
368 | * being called before the radio is started. | |
369 | */ | |
370 | allowed = tpt_trig->active & IEEE80211_TPT_LEDTRIG_FL_RADIO; | |
371 | ||
372 | if (!allowed || !(tpt_trig->active & tpt_trig->want)) | |
373 | ieee80211_stop_tpt_led_trig(local); | |
374 | else | |
375 | ieee80211_start_tpt_led_trig(local); | |
376 | } |