Commit | Line | Data |
---|---|---|
0fca65c1 S |
1 | /* |
2 | * Copyright (c) 2008-2009 Atheros Communications Inc. | |
3 | * | |
4 | * Permission to use, copy, modify, and/or distribute this software for any | |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | */ | |
16 | ||
17 | #include "ath9k.h" | |
18 | ||
19 | /********************************/ | |
20 | /* LED functions */ | |
21 | /********************************/ | |
22 | ||
23 | static void ath_led_blink_work(struct work_struct *work) | |
24 | { | |
25 | struct ath_softc *sc = container_of(work, struct ath_softc, | |
26 | ath_led_blink_work.work); | |
27 | ||
28 | if (!(sc->sc_flags & SC_OP_LED_ASSOCIATED)) | |
29 | return; | |
30 | ||
31 | if ((sc->led_on_duration == ATH_LED_ON_DURATION_IDLE) || | |
32 | (sc->led_off_duration == ATH_LED_OFF_DURATION_IDLE)) | |
33 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0); | |
34 | else | |
35 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, | |
36 | (sc->sc_flags & SC_OP_LED_ON) ? 1 : 0); | |
37 | ||
38 | ieee80211_queue_delayed_work(sc->hw, | |
39 | &sc->ath_led_blink_work, | |
40 | (sc->sc_flags & SC_OP_LED_ON) ? | |
41 | msecs_to_jiffies(sc->led_off_duration) : | |
42 | msecs_to_jiffies(sc->led_on_duration)); | |
43 | ||
44 | sc->led_on_duration = sc->led_on_cnt ? | |
45 | max((ATH_LED_ON_DURATION_IDLE - sc->led_on_cnt), 25) : | |
46 | ATH_LED_ON_DURATION_IDLE; | |
47 | sc->led_off_duration = sc->led_off_cnt ? | |
48 | max((ATH_LED_OFF_DURATION_IDLE - sc->led_off_cnt), 10) : | |
49 | ATH_LED_OFF_DURATION_IDLE; | |
50 | sc->led_on_cnt = sc->led_off_cnt = 0; | |
51 | if (sc->sc_flags & SC_OP_LED_ON) | |
52 | sc->sc_flags &= ~SC_OP_LED_ON; | |
53 | else | |
54 | sc->sc_flags |= SC_OP_LED_ON; | |
55 | } | |
56 | ||
57 | static void ath_led_brightness(struct led_classdev *led_cdev, | |
58 | enum led_brightness brightness) | |
59 | { | |
60 | struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev); | |
61 | struct ath_softc *sc = led->sc; | |
62 | ||
63 | switch (brightness) { | |
64 | case LED_OFF: | |
65 | if (led->led_type == ATH_LED_ASSOC || | |
66 | led->led_type == ATH_LED_RADIO) { | |
67 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, | |
68 | (led->led_type == ATH_LED_RADIO)); | |
69 | sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; | |
70 | if (led->led_type == ATH_LED_RADIO) | |
71 | sc->sc_flags &= ~SC_OP_LED_ON; | |
72 | } else { | |
73 | sc->led_off_cnt++; | |
74 | } | |
75 | break; | |
76 | case LED_FULL: | |
77 | if (led->led_type == ATH_LED_ASSOC) { | |
78 | sc->sc_flags |= SC_OP_LED_ASSOCIATED; | |
9a75c2ff VN |
79 | if (led_blink) |
80 | ieee80211_queue_delayed_work(sc->hw, | |
0fca65c1 S |
81 | &sc->ath_led_blink_work, 0); |
82 | } else if (led->led_type == ATH_LED_RADIO) { | |
83 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0); | |
84 | sc->sc_flags |= SC_OP_LED_ON; | |
85 | } else { | |
86 | sc->led_on_cnt++; | |
87 | } | |
88 | break; | |
89 | default: | |
90 | break; | |
91 | } | |
92 | } | |
93 | ||
94 | static int ath_register_led(struct ath_softc *sc, struct ath_led *led, | |
95 | char *trigger) | |
96 | { | |
97 | int ret; | |
98 | ||
99 | led->sc = sc; | |
100 | led->led_cdev.name = led->name; | |
101 | led->led_cdev.default_trigger = trigger; | |
102 | led->led_cdev.brightness_set = ath_led_brightness; | |
103 | ||
104 | ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev); | |
105 | if (ret) | |
106 | ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL, | |
107 | "Failed to register led:%s", led->name); | |
108 | else | |
109 | led->registered = 1; | |
110 | return ret; | |
111 | } | |
112 | ||
113 | static void ath_unregister_led(struct ath_led *led) | |
114 | { | |
115 | if (led->registered) { | |
116 | led_classdev_unregister(&led->led_cdev); | |
117 | led->registered = 0; | |
118 | } | |
119 | } | |
120 | ||
121 | void ath_deinit_leds(struct ath_softc *sc) | |
122 | { | |
123 | ath_unregister_led(&sc->assoc_led); | |
124 | sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; | |
125 | ath_unregister_led(&sc->tx_led); | |
126 | ath_unregister_led(&sc->rx_led); | |
127 | ath_unregister_led(&sc->radio_led); | |
128 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1); | |
129 | } | |
130 | ||
131 | void ath_init_leds(struct ath_softc *sc) | |
132 | { | |
133 | char *trigger; | |
134 | int ret; | |
135 | ||
136 | if (AR_SREV_9287(sc->sc_ah)) | |
137 | sc->sc_ah->led_pin = ATH_LED_PIN_9287; | |
138 | else | |
139 | sc->sc_ah->led_pin = ATH_LED_PIN_DEF; | |
140 | ||
141 | /* Configure gpio 1 for output */ | |
142 | ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin, | |
143 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); | |
144 | /* LED off, active low */ | |
145 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1); | |
146 | ||
9a75c2ff VN |
147 | if (led_blink) |
148 | INIT_DELAYED_WORK(&sc->ath_led_blink_work, ath_led_blink_work); | |
0fca65c1 S |
149 | |
150 | trigger = ieee80211_get_radio_led_name(sc->hw); | |
151 | snprintf(sc->radio_led.name, sizeof(sc->radio_led.name), | |
152 | "ath9k-%s::radio", wiphy_name(sc->hw->wiphy)); | |
153 | ret = ath_register_led(sc, &sc->radio_led, trigger); | |
154 | sc->radio_led.led_type = ATH_LED_RADIO; | |
155 | if (ret) | |
156 | goto fail; | |
157 | ||
158 | trigger = ieee80211_get_assoc_led_name(sc->hw); | |
159 | snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name), | |
160 | "ath9k-%s::assoc", wiphy_name(sc->hw->wiphy)); | |
161 | ret = ath_register_led(sc, &sc->assoc_led, trigger); | |
162 | sc->assoc_led.led_type = ATH_LED_ASSOC; | |
163 | if (ret) | |
164 | goto fail; | |
165 | ||
166 | trigger = ieee80211_get_tx_led_name(sc->hw); | |
167 | snprintf(sc->tx_led.name, sizeof(sc->tx_led.name), | |
168 | "ath9k-%s::tx", wiphy_name(sc->hw->wiphy)); | |
169 | ret = ath_register_led(sc, &sc->tx_led, trigger); | |
170 | sc->tx_led.led_type = ATH_LED_TX; | |
171 | if (ret) | |
172 | goto fail; | |
173 | ||
174 | trigger = ieee80211_get_rx_led_name(sc->hw); | |
175 | snprintf(sc->rx_led.name, sizeof(sc->rx_led.name), | |
176 | "ath9k-%s::rx", wiphy_name(sc->hw->wiphy)); | |
177 | ret = ath_register_led(sc, &sc->rx_led, trigger); | |
178 | sc->rx_led.led_type = ATH_LED_RX; | |
179 | if (ret) | |
180 | goto fail; | |
181 | ||
182 | return; | |
183 | ||
184 | fail: | |
9a75c2ff VN |
185 | if (led_blink) |
186 | cancel_delayed_work_sync(&sc->ath_led_blink_work); | |
0fca65c1 S |
187 | ath_deinit_leds(sc); |
188 | } | |
189 | ||
190 | /*******************/ | |
191 | /* Rfkill */ | |
192 | /*******************/ | |
193 | ||
194 | static bool ath_is_rfkill_set(struct ath_softc *sc) | |
195 | { | |
196 | struct ath_hw *ah = sc->sc_ah; | |
197 | ||
198 | return ath9k_hw_gpio_get(ah, ah->rfkill_gpio) == | |
199 | ah->rfkill_polarity; | |
200 | } | |
201 | ||
202 | void ath9k_rfkill_poll_state(struct ieee80211_hw *hw) | |
203 | { | |
204 | struct ath_wiphy *aphy = hw->priv; | |
205 | struct ath_softc *sc = aphy->sc; | |
206 | bool blocked = !!ath_is_rfkill_set(sc); | |
207 | ||
208 | wiphy_rfkill_set_hw_state(hw->wiphy, blocked); | |
209 | } | |
210 | ||
211 | void ath_start_rfkill_poll(struct ath_softc *sc) | |
212 | { | |
213 | struct ath_hw *ah = sc->sc_ah; | |
214 | ||
215 | if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) | |
216 | wiphy_rfkill_start_polling(sc->hw->wiphy); | |
217 | } | |
218 | ||
219 | /******************/ | |
220 | /* BTCOEX */ | |
221 | /******************/ | |
222 | ||
223 | /* | |
224 | * Detects if there is any priority bt traffic | |
225 | */ | |
226 | static void ath_detect_bt_priority(struct ath_softc *sc) | |
227 | { | |
228 | struct ath_btcoex *btcoex = &sc->btcoex; | |
229 | struct ath_hw *ah = sc->sc_ah; | |
230 | ||
231 | if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio)) | |
232 | btcoex->bt_priority_cnt++; | |
233 | ||
234 | if (time_after(jiffies, btcoex->bt_priority_time + | |
235 | msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) { | |
58da1318 VT |
236 | sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED | SC_OP_BT_SCAN); |
237 | /* Detect if colocated bt started scanning */ | |
238 | if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) { | |
239 | ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX, | |
240 | "BT scan detected"); | |
241 | sc->sc_flags |= (SC_OP_BT_SCAN | | |
242 | SC_OP_BT_PRIORITY_DETECTED); | |
243 | } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) { | |
0fca65c1 S |
244 | ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX, |
245 | "BT priority traffic detected"); | |
246 | sc->sc_flags |= SC_OP_BT_PRIORITY_DETECTED; | |
0fca65c1 S |
247 | } |
248 | ||
249 | btcoex->bt_priority_cnt = 0; | |
250 | btcoex->bt_priority_time = jiffies; | |
251 | } | |
252 | } | |
253 | ||
254 | /* | |
255 | * Configures appropriate weight based on stomp type. | |
256 | */ | |
257 | static void ath9k_btcoex_bt_stomp(struct ath_softc *sc, | |
258 | enum ath_stomp_type stomp_type) | |
259 | { | |
260 | struct ath_hw *ah = sc->sc_ah; | |
261 | ||
262 | switch (stomp_type) { | |
263 | case ATH_BTCOEX_STOMP_ALL: | |
264 | ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, | |
265 | AR_STOMP_ALL_WLAN_WGHT); | |
266 | break; | |
267 | case ATH_BTCOEX_STOMP_LOW: | |
268 | ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, | |
269 | AR_STOMP_LOW_WLAN_WGHT); | |
270 | break; | |
271 | case ATH_BTCOEX_STOMP_NONE: | |
272 | ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, | |
273 | AR_STOMP_NONE_WLAN_WGHT); | |
274 | break; | |
275 | default: | |
276 | ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX, | |
277 | "Invalid Stomptype\n"); | |
278 | break; | |
279 | } | |
280 | ||
281 | ath9k_hw_btcoex_enable(ah); | |
282 | } | |
283 | ||
284 | static void ath9k_gen_timer_start(struct ath_hw *ah, | |
285 | struct ath_gen_timer *timer, | |
286 | u32 timer_next, | |
287 | u32 timer_period) | |
288 | { | |
0fca65c1 S |
289 | ath9k_hw_gen_timer_start(ah, timer, timer_next, timer_period); |
290 | ||
3069168c | 291 | if ((ah->imask & ATH9K_INT_GENTIMER) == 0) { |
0fca65c1 | 292 | ath9k_hw_set_interrupts(ah, 0); |
3069168c PR |
293 | ah->imask |= ATH9K_INT_GENTIMER; |
294 | ath9k_hw_set_interrupts(ah, ah->imask); | |
0fca65c1 S |
295 | } |
296 | } | |
297 | ||
298 | static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer) | |
299 | { | |
0fca65c1 S |
300 | struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers; |
301 | ||
302 | ath9k_hw_gen_timer_stop(ah, timer); | |
303 | ||
304 | /* if no timer is enabled, turn off interrupt mask */ | |
305 | if (timer_table->timer_mask.val == 0) { | |
306 | ath9k_hw_set_interrupts(ah, 0); | |
3069168c PR |
307 | ah->imask &= ~ATH9K_INT_GENTIMER; |
308 | ath9k_hw_set_interrupts(ah, ah->imask); | |
0fca65c1 S |
309 | } |
310 | } | |
311 | ||
312 | /* | |
313 | * This is the master bt coex timer which runs for every | |
314 | * 45ms, bt traffic will be given priority during 55% of this | |
315 | * period while wlan gets remaining 45% | |
316 | */ | |
317 | static void ath_btcoex_period_timer(unsigned long data) | |
318 | { | |
319 | struct ath_softc *sc = (struct ath_softc *) data; | |
320 | struct ath_hw *ah = sc->sc_ah; | |
321 | struct ath_btcoex *btcoex = &sc->btcoex; | |
58da1318 VT |
322 | u32 timer_period; |
323 | bool is_btscan; | |
0fca65c1 S |
324 | |
325 | ath_detect_bt_priority(sc); | |
326 | ||
58da1318 VT |
327 | is_btscan = sc->sc_flags & SC_OP_BT_SCAN; |
328 | ||
0fca65c1 S |
329 | spin_lock_bh(&btcoex->btcoex_lock); |
330 | ||
58da1318 VT |
331 | ath9k_btcoex_bt_stomp(sc, is_btscan ? ATH_BTCOEX_STOMP_ALL : |
332 | btcoex->bt_stomp_type); | |
0fca65c1 S |
333 | |
334 | spin_unlock_bh(&btcoex->btcoex_lock); | |
335 | ||
336 | if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) { | |
337 | if (btcoex->hw_timer_enabled) | |
338 | ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer); | |
339 | ||
58da1318 VT |
340 | timer_period = is_btscan ? btcoex->btscan_no_stomp : |
341 | btcoex->btcoex_no_stomp; | |
0fca65c1 S |
342 | ath9k_gen_timer_start(ah, |
343 | btcoex->no_stomp_timer, | |
344 | (ath9k_hw_gettsf32(ah) + | |
58da1318 | 345 | timer_period), timer_period * 10); |
0fca65c1 S |
346 | btcoex->hw_timer_enabled = true; |
347 | } | |
348 | ||
349 | mod_timer(&btcoex->period_timer, jiffies + | |
350 | msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD)); | |
351 | } | |
352 | ||
353 | /* | |
354 | * Generic tsf based hw timer which configures weight | |
355 | * registers to time slice between wlan and bt traffic | |
356 | */ | |
357 | static void ath_btcoex_no_stomp_timer(void *arg) | |
358 | { | |
359 | struct ath_softc *sc = (struct ath_softc *)arg; | |
360 | struct ath_hw *ah = sc->sc_ah; | |
361 | struct ath_btcoex *btcoex = &sc->btcoex; | |
58da1318 | 362 | bool is_btscan = sc->sc_flags & SC_OP_BT_SCAN; |
0fca65c1 S |
363 | |
364 | ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX, | |
60ece404 | 365 | "no stomp timer running\n"); |
0fca65c1 S |
366 | |
367 | spin_lock_bh(&btcoex->btcoex_lock); | |
368 | ||
58da1318 | 369 | if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || is_btscan) |
0fca65c1 S |
370 | ath9k_btcoex_bt_stomp(sc, ATH_BTCOEX_STOMP_NONE); |
371 | else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL) | |
372 | ath9k_btcoex_bt_stomp(sc, ATH_BTCOEX_STOMP_LOW); | |
373 | ||
374 | spin_unlock_bh(&btcoex->btcoex_lock); | |
375 | } | |
376 | ||
377 | int ath_init_btcoex_timer(struct ath_softc *sc) | |
378 | { | |
379 | struct ath_btcoex *btcoex = &sc->btcoex; | |
380 | ||
381 | btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000; | |
382 | btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) * | |
383 | btcoex->btcoex_period / 100; | |
58da1318 VT |
384 | btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) * |
385 | btcoex->btcoex_period / 100; | |
0fca65c1 S |
386 | |
387 | setup_timer(&btcoex->period_timer, ath_btcoex_period_timer, | |
388 | (unsigned long) sc); | |
389 | ||
390 | spin_lock_init(&btcoex->btcoex_lock); | |
391 | ||
392 | btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah, | |
393 | ath_btcoex_no_stomp_timer, | |
394 | ath_btcoex_no_stomp_timer, | |
395 | (void *) sc, AR_FIRST_NDP_TIMER); | |
396 | ||
397 | if (!btcoex->no_stomp_timer) | |
398 | return -ENOMEM; | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | /* | |
404 | * (Re)start btcoex timers | |
405 | */ | |
406 | void ath9k_btcoex_timer_resume(struct ath_softc *sc) | |
407 | { | |
408 | struct ath_btcoex *btcoex = &sc->btcoex; | |
409 | struct ath_hw *ah = sc->sc_ah; | |
410 | ||
411 | ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX, | |
412 | "Starting btcoex timers"); | |
413 | ||
414 | /* make sure duty cycle timer is also stopped when resuming */ | |
415 | if (btcoex->hw_timer_enabled) | |
416 | ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer); | |
417 | ||
418 | btcoex->bt_priority_cnt = 0; | |
419 | btcoex->bt_priority_time = jiffies; | |
58da1318 | 420 | sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED | SC_OP_BT_SCAN); |
0fca65c1 S |
421 | |
422 | mod_timer(&btcoex->period_timer, jiffies); | |
423 | } | |
424 | ||
425 | ||
426 | /* | |
427 | * Pause btcoex timer and bt duty cycle timer | |
428 | */ | |
429 | void ath9k_btcoex_timer_pause(struct ath_softc *sc) | |
430 | { | |
431 | struct ath_btcoex *btcoex = &sc->btcoex; | |
432 | struct ath_hw *ah = sc->sc_ah; | |
433 | ||
434 | del_timer_sync(&btcoex->period_timer); | |
435 | ||
436 | if (btcoex->hw_timer_enabled) | |
437 | ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer); | |
438 | ||
439 | btcoex->hw_timer_enabled = false; | |
440 | } |