2 * Copyright (c) 2008-2009 Atheros Communications Inc.
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.
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.
19 /********************************/
21 /********************************/
23 static void ath_led_blink_work(struct work_struct *work)
25 struct ath_softc *sc = container_of(work, struct ath_softc,
26 ath_led_blink_work.work);
28 if (!(sc->sc_flags & SC_OP_LED_ASSOCIATED))
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);
35 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin,
36 (sc->sc_flags & SC_OP_LED_ON) ? 1 : 0);
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));
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;
54 sc->sc_flags |= SC_OP_LED_ON;
57 static void ath_led_brightness(struct led_classdev *led_cdev,
58 enum led_brightness brightness)
60 struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
61 struct ath_softc *sc = led->sc;
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;
77 if (led->led_type == ATH_LED_ASSOC) {
78 sc->sc_flags |= SC_OP_LED_ASSOCIATED;
79 ieee80211_queue_delayed_work(sc->hw,
80 &sc->ath_led_blink_work, 0);
81 } else if (led->led_type == ATH_LED_RADIO) {
82 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0);
83 sc->sc_flags |= SC_OP_LED_ON;
93 static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
99 led->led_cdev.name = led->name;
100 led->led_cdev.default_trigger = trigger;
101 led->led_cdev.brightness_set = ath_led_brightness;
103 ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
105 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
106 "Failed to register led:%s", led->name);
112 static void ath_unregister_led(struct ath_led *led)
114 if (led->registered) {
115 led_classdev_unregister(&led->led_cdev);
120 void ath_deinit_leds(struct ath_softc *sc)
122 ath_unregister_led(&sc->assoc_led);
123 sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
124 ath_unregister_led(&sc->tx_led);
125 ath_unregister_led(&sc->rx_led);
126 ath_unregister_led(&sc->radio_led);
127 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
130 void ath_init_leds(struct ath_softc *sc)
135 if (AR_SREV_9287(sc->sc_ah))
136 sc->sc_ah->led_pin = ATH_LED_PIN_9287;
138 sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
140 /* Configure gpio 1 for output */
141 ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin,
142 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
143 /* LED off, active low */
144 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
146 INIT_DELAYED_WORK(&sc->ath_led_blink_work, ath_led_blink_work);
148 trigger = ieee80211_get_radio_led_name(sc->hw);
149 snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
150 "ath9k-%s::radio", wiphy_name(sc->hw->wiphy));
151 ret = ath_register_led(sc, &sc->radio_led, trigger);
152 sc->radio_led.led_type = ATH_LED_RADIO;
156 trigger = ieee80211_get_assoc_led_name(sc->hw);
157 snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
158 "ath9k-%s::assoc", wiphy_name(sc->hw->wiphy));
159 ret = ath_register_led(sc, &sc->assoc_led, trigger);
160 sc->assoc_led.led_type = ATH_LED_ASSOC;
164 trigger = ieee80211_get_tx_led_name(sc->hw);
165 snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
166 "ath9k-%s::tx", wiphy_name(sc->hw->wiphy));
167 ret = ath_register_led(sc, &sc->tx_led, trigger);
168 sc->tx_led.led_type = ATH_LED_TX;
172 trigger = ieee80211_get_rx_led_name(sc->hw);
173 snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
174 "ath9k-%s::rx", wiphy_name(sc->hw->wiphy));
175 ret = ath_register_led(sc, &sc->rx_led, trigger);
176 sc->rx_led.led_type = ATH_LED_RX;
183 cancel_delayed_work_sync(&sc->ath_led_blink_work);
187 /*******************/
189 /*******************/
191 static bool ath_is_rfkill_set(struct ath_softc *sc)
193 struct ath_hw *ah = sc->sc_ah;
195 return ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
199 void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
201 struct ath_wiphy *aphy = hw->priv;
202 struct ath_softc *sc = aphy->sc;
203 bool blocked = !!ath_is_rfkill_set(sc);
205 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
208 void ath_start_rfkill_poll(struct ath_softc *sc)
210 struct ath_hw *ah = sc->sc_ah;
212 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
213 wiphy_rfkill_start_polling(sc->hw->wiphy);
221 * Detects if there is any priority bt traffic
223 static void ath_detect_bt_priority(struct ath_softc *sc)
225 struct ath_btcoex *btcoex = &sc->btcoex;
226 struct ath_hw *ah = sc->sc_ah;
228 if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
229 btcoex->bt_priority_cnt++;
231 if (time_after(jiffies, btcoex->bt_priority_time +
232 msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
233 sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED | SC_OP_BT_SCAN);
234 /* Detect if colocated bt started scanning */
235 if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
236 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
238 sc->sc_flags |= (SC_OP_BT_SCAN |
239 SC_OP_BT_PRIORITY_DETECTED);
240 } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
241 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
242 "BT priority traffic detected");
243 sc->sc_flags |= SC_OP_BT_PRIORITY_DETECTED;
246 btcoex->bt_priority_cnt = 0;
247 btcoex->bt_priority_time = jiffies;
252 * Configures appropriate weight based on stomp type.
254 static void ath9k_btcoex_bt_stomp(struct ath_softc *sc,
255 enum ath_stomp_type stomp_type)
257 struct ath_hw *ah = sc->sc_ah;
259 switch (stomp_type) {
260 case ATH_BTCOEX_STOMP_ALL:
261 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
262 AR_STOMP_ALL_WLAN_WGHT);
264 case ATH_BTCOEX_STOMP_LOW:
265 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
266 AR_STOMP_LOW_WLAN_WGHT);
268 case ATH_BTCOEX_STOMP_NONE:
269 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
270 AR_STOMP_NONE_WLAN_WGHT);
273 ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
274 "Invalid Stomptype\n");
278 ath9k_hw_btcoex_enable(ah);
281 static void ath9k_gen_timer_start(struct ath_hw *ah,
282 struct ath_gen_timer *timer,
286 struct ath_common *common = ath9k_hw_common(ah);
287 struct ath_softc *sc = (struct ath_softc *) common->priv;
289 ath9k_hw_gen_timer_start(ah, timer, timer_next, timer_period);
291 if ((sc->imask & ATH9K_INT_GENTIMER) == 0) {
292 ath9k_hw_set_interrupts(ah, 0);
293 sc->imask |= ATH9K_INT_GENTIMER;
294 ath9k_hw_set_interrupts(ah, sc->imask);
298 static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
300 struct ath_common *common = ath9k_hw_common(ah);
301 struct ath_softc *sc = (struct ath_softc *) common->priv;
302 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
304 ath9k_hw_gen_timer_stop(ah, timer);
306 /* if no timer is enabled, turn off interrupt mask */
307 if (timer_table->timer_mask.val == 0) {
308 ath9k_hw_set_interrupts(ah, 0);
309 sc->imask &= ~ATH9K_INT_GENTIMER;
310 ath9k_hw_set_interrupts(ah, sc->imask);
315 * This is the master bt coex timer which runs for every
316 * 45ms, bt traffic will be given priority during 55% of this
317 * period while wlan gets remaining 45%
319 static void ath_btcoex_period_timer(unsigned long data)
321 struct ath_softc *sc = (struct ath_softc *) data;
322 struct ath_hw *ah = sc->sc_ah;
323 struct ath_btcoex *btcoex = &sc->btcoex;
327 ath_detect_bt_priority(sc);
329 is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
331 spin_lock_bh(&btcoex->btcoex_lock);
333 ath9k_btcoex_bt_stomp(sc, is_btscan ? ATH_BTCOEX_STOMP_ALL :
334 btcoex->bt_stomp_type);
336 spin_unlock_bh(&btcoex->btcoex_lock);
338 if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) {
339 if (btcoex->hw_timer_enabled)
340 ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
342 timer_period = is_btscan ? btcoex->btscan_no_stomp :
343 btcoex->btcoex_no_stomp;
344 ath9k_gen_timer_start(ah,
345 btcoex->no_stomp_timer,
346 (ath9k_hw_gettsf32(ah) +
347 timer_period), timer_period * 10);
348 btcoex->hw_timer_enabled = true;
351 mod_timer(&btcoex->period_timer, jiffies +
352 msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD));
356 * Generic tsf based hw timer which configures weight
357 * registers to time slice between wlan and bt traffic
359 static void ath_btcoex_no_stomp_timer(void *arg)
361 struct ath_softc *sc = (struct ath_softc *)arg;
362 struct ath_hw *ah = sc->sc_ah;
363 struct ath_btcoex *btcoex = &sc->btcoex;
364 bool is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
366 ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
367 "no stomp timer running \n");
369 spin_lock_bh(&btcoex->btcoex_lock);
371 if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || is_btscan)
372 ath9k_btcoex_bt_stomp(sc, ATH_BTCOEX_STOMP_NONE);
373 else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
374 ath9k_btcoex_bt_stomp(sc, ATH_BTCOEX_STOMP_LOW);
376 spin_unlock_bh(&btcoex->btcoex_lock);
379 int ath_init_btcoex_timer(struct ath_softc *sc)
381 struct ath_btcoex *btcoex = &sc->btcoex;
383 btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000;
384 btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
385 btcoex->btcoex_period / 100;
386 btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
387 btcoex->btcoex_period / 100;
389 setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
392 spin_lock_init(&btcoex->btcoex_lock);
394 btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah,
395 ath_btcoex_no_stomp_timer,
396 ath_btcoex_no_stomp_timer,
397 (void *) sc, AR_FIRST_NDP_TIMER);
399 if (!btcoex->no_stomp_timer)
406 * (Re)start btcoex timers
408 void ath9k_btcoex_timer_resume(struct ath_softc *sc)
410 struct ath_btcoex *btcoex = &sc->btcoex;
411 struct ath_hw *ah = sc->sc_ah;
413 ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
414 "Starting btcoex timers");
416 /* make sure duty cycle timer is also stopped when resuming */
417 if (btcoex->hw_timer_enabled)
418 ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
420 btcoex->bt_priority_cnt = 0;
421 btcoex->bt_priority_time = jiffies;
422 sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED | SC_OP_BT_SCAN);
424 mod_timer(&btcoex->period_timer, jiffies);
429 * Pause btcoex timer and bt duty cycle timer
431 void ath9k_btcoex_timer_pause(struct ath_softc *sc)
433 struct ath_btcoex *btcoex = &sc->btcoex;
434 struct ath_hw *ah = sc->sc_ah;
436 del_timer_sync(&btcoex->period_timer);
438 if (btcoex->hw_timer_enabled)
439 ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
441 btcoex->hw_timer_enabled = false;