2 * Copyright (c) 2008-2011 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 #ifdef CONFIG_MAC80211_LEDS
24 static void ath_led_brightness(struct led_classdev *led_cdev,
25 enum led_brightness brightness)
27 struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
28 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, (brightness == LED_OFF));
31 void ath_deinit_leds(struct ath_softc *sc)
33 if (!sc->led_registered)
36 ath_led_brightness(&sc->led_cdev, LED_OFF);
37 led_classdev_unregister(&sc->led_cdev);
40 void ath_init_leds(struct ath_softc *sc)
44 if (AR_SREV_9100(sc->sc_ah))
47 if (sc->sc_ah->led_pin < 0) {
48 if (AR_SREV_9287(sc->sc_ah))
49 sc->sc_ah->led_pin = ATH_LED_PIN_9287;
50 else if (AR_SREV_9485(sc->sc_ah))
51 sc->sc_ah->led_pin = ATH_LED_PIN_9485;
52 else if (AR_SREV_9300(sc->sc_ah))
53 sc->sc_ah->led_pin = ATH_LED_PIN_9300;
54 else if (AR_SREV_9462(sc->sc_ah))
55 sc->sc_ah->led_pin = ATH_LED_PIN_9462;
57 sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
60 /* Configure gpio 1 for output */
61 ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin,
62 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
63 /* LED off, active low */
64 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
67 sc->led_cdev.default_trigger =
68 ieee80211_get_radio_led_name(sc->hw);
70 snprintf(sc->led_name, sizeof(sc->led_name),
71 "ath9k-%s", wiphy_name(sc->hw->wiphy));
72 sc->led_cdev.name = sc->led_name;
73 sc->led_cdev.brightness_set = ath_led_brightness;
75 ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
79 sc->led_registered = true;
87 static bool ath_is_rfkill_set(struct ath_softc *sc)
89 struct ath_hw *ah = sc->sc_ah;
93 is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
100 void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
102 struct ath_softc *sc = hw->priv;
103 bool blocked = !!ath_is_rfkill_set(sc);
105 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
108 void ath_start_rfkill_poll(struct ath_softc *sc)
110 struct ath_hw *ah = sc->sc_ah;
112 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
113 wiphy_rfkill_start_polling(sc->hw->wiphy);
116 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
123 * Detects if there is any priority bt traffic
125 static void ath_detect_bt_priority(struct ath_softc *sc)
127 struct ath_btcoex *btcoex = &sc->btcoex;
128 struct ath_hw *ah = sc->sc_ah;
130 if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
131 btcoex->bt_priority_cnt++;
133 if (time_after(jiffies, btcoex->bt_priority_time +
134 msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
135 clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
136 clear_bit(BT_OP_SCAN, &btcoex->op_flags);
137 /* Detect if colocated bt started scanning */
138 if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
139 ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
140 "BT scan detected\n");
141 set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
142 set_bit(BT_OP_SCAN, &btcoex->op_flags);
143 } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
144 ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
145 "BT priority traffic detected\n");
146 set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
149 btcoex->bt_priority_cnt = 0;
150 btcoex->bt_priority_time = jiffies;
154 static void ath9k_gen_timer_start(struct ath_hw *ah,
155 struct ath_gen_timer *timer,
159 ath9k_hw_gen_timer_start(ah, timer, trig_timeout, timer_period);
161 if ((ah->imask & ATH9K_INT_GENTIMER) == 0) {
162 ath9k_hw_disable_interrupts(ah);
163 ah->imask |= ATH9K_INT_GENTIMER;
164 ath9k_hw_set_interrupts(ah);
165 ath9k_hw_enable_interrupts(ah);
169 static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
171 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
173 ath9k_hw_gen_timer_stop(ah, timer);
175 /* if no timer is enabled, turn off interrupt mask */
176 if (timer_table->timer_mask.val == 0) {
177 ath9k_hw_disable_interrupts(ah);
178 ah->imask &= ~ATH9K_INT_GENTIMER;
179 ath9k_hw_set_interrupts(ah);
180 ath9k_hw_enable_interrupts(ah);
185 * This is the master bt coex timer which runs for every
186 * 45ms, bt traffic will be given priority during 55% of this
187 * period while wlan gets remaining 45%
189 static void ath_btcoex_period_timer(unsigned long data)
191 struct ath_softc *sc = (struct ath_softc *) data;
192 struct ath_hw *ah = sc->sc_ah;
193 struct ath_btcoex *btcoex = &sc->btcoex;
194 struct ath_mci_profile *mci = &btcoex->mci;
199 spin_lock_irqsave(&sc->sc_pm_lock, flags);
200 if (sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP) {
201 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
204 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
207 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
208 ath_detect_bt_priority(sc);
209 is_btscan = test_bit(BT_OP_SCAN, &btcoex->op_flags);
211 btcoex->bt_wait_time += btcoex->btcoex_period;
212 if (btcoex->bt_wait_time > ATH_BTCOEX_RX_WAIT_TIME) {
213 if (ar9003_mci_state(ah, MCI_STATE_NEED_FTP_STOMP) &&
214 (mci->num_pan || mci->num_other_acl))
215 ah->btcoex_hw.mci.stomp_ftp =
216 (sc->rx.num_pkts < ATH_BTCOEX_STOMP_FTP_THRESH);
218 ah->btcoex_hw.mci.stomp_ftp = false;
219 btcoex->bt_wait_time = 0;
223 spin_lock_bh(&btcoex->btcoex_lock);
225 ath9k_hw_btcoex_bt_stomp(ah, is_btscan ? ATH_BTCOEX_STOMP_ALL :
226 btcoex->bt_stomp_type);
228 ath9k_hw_btcoex_enable(ah);
229 spin_unlock_bh(&btcoex->btcoex_lock);
231 if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) {
232 if (btcoex->hw_timer_enabled)
233 ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
235 timer_period = is_btscan ? btcoex->btscan_no_stomp :
236 btcoex->btcoex_no_stomp;
237 ath9k_gen_timer_start(ah, btcoex->no_stomp_timer, timer_period,
239 btcoex->hw_timer_enabled = true;
242 ath9k_ps_restore(sc);
244 timer_period = btcoex->btcoex_period;
245 mod_timer(&btcoex->period_timer, jiffies + msecs_to_jiffies(timer_period));
249 * Generic tsf based hw timer which configures weight
250 * registers to time slice between wlan and bt traffic
252 static void ath_btcoex_no_stomp_timer(void *arg)
254 struct ath_softc *sc = (struct ath_softc *)arg;
255 struct ath_hw *ah = sc->sc_ah;
256 struct ath_btcoex *btcoex = &sc->btcoex;
257 struct ath_common *common = ath9k_hw_common(ah);
259 ath_dbg(common, BTCOEX, "no stomp timer running\n");
262 spin_lock_bh(&btcoex->btcoex_lock);
264 if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW ||
265 test_bit(BT_OP_SCAN, &btcoex->op_flags))
266 ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
267 else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
268 ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
270 ath9k_hw_btcoex_enable(ah);
271 spin_unlock_bh(&btcoex->btcoex_lock);
272 ath9k_ps_restore(sc);
275 static int ath_init_btcoex_timer(struct ath_softc *sc)
277 struct ath_btcoex *btcoex = &sc->btcoex;
279 btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD;
280 btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) * 1000 *
281 btcoex->btcoex_period / 100;
282 btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) * 1000 *
283 btcoex->btcoex_period / 100;
285 setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
288 spin_lock_init(&btcoex->btcoex_lock);
290 btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah,
291 ath_btcoex_no_stomp_timer,
292 ath_btcoex_no_stomp_timer,
293 (void *) sc, AR_FIRST_NDP_TIMER);
295 if (!btcoex->no_stomp_timer)
302 * (Re)start btcoex timers
304 void ath9k_btcoex_timer_resume(struct ath_softc *sc)
306 struct ath_btcoex *btcoex = &sc->btcoex;
307 struct ath_hw *ah = sc->sc_ah;
309 ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex timers\n");
311 /* make sure duty cycle timer is also stopped when resuming */
312 if (btcoex->hw_timer_enabled)
313 ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
315 btcoex->bt_priority_cnt = 0;
316 btcoex->bt_priority_time = jiffies;
317 clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
318 clear_bit(BT_OP_SCAN, &btcoex->op_flags);
320 mod_timer(&btcoex->period_timer, jiffies);
325 * Pause btcoex timer and bt duty cycle timer
327 void ath9k_btcoex_timer_pause(struct ath_softc *sc)
329 struct ath_btcoex *btcoex = &sc->btcoex;
330 struct ath_hw *ah = sc->sc_ah;
332 del_timer_sync(&btcoex->period_timer);
334 if (btcoex->hw_timer_enabled)
335 ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
337 btcoex->hw_timer_enabled = false;
340 void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc)
342 struct ath_btcoex *btcoex = &sc->btcoex;
344 if (btcoex->hw_timer_enabled)
345 ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
348 u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen)
350 struct ath_btcoex *btcoex = &sc->btcoex;
351 struct ath_mci_profile *mci = &sc->btcoex.mci;
354 if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit)
355 aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4;
356 else if (test_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags))
357 aggr_limit = min((max_4ms_framelen * 3) / 8,
358 (u32)ATH_AMPDU_LIMIT_MAX);
363 void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status)
365 struct ath_hw *ah = sc->sc_ah;
367 if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
368 if (status & ATH9K_INT_GENTIMER)
369 ath_gen_timer_isr(sc->sc_ah);
371 if (status & ATH9K_INT_MCI)
375 void ath9k_start_btcoex(struct ath_softc *sc)
377 struct ath_hw *ah = sc->sc_ah;
379 if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
380 !ah->btcoex_hw.enabled) {
381 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
382 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
383 AR_STOMP_LOW_WLAN_WGHT);
384 ath9k_hw_btcoex_enable(ah);
386 if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
387 ath9k_btcoex_timer_resume(sc);
391 void ath9k_stop_btcoex(struct ath_softc *sc)
393 struct ath_hw *ah = sc->sc_ah;
395 if (ah->btcoex_hw.enabled &&
396 ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
397 if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
398 ath9k_btcoex_timer_pause(sc);
399 ath9k_hw_btcoex_disable(ah);
400 if (AR_SREV_9462(ah))
401 ath_mci_flush_profile(&sc->btcoex.mci);
405 void ath9k_deinit_btcoex(struct ath_softc *sc)
407 struct ath_hw *ah = sc->sc_ah;
409 if ((sc->btcoex.no_stomp_timer) &&
410 ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_3WIRE)
411 ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);
413 if (ath9k_hw_mci_is_enabled(ah))
417 int ath9k_init_btcoex(struct ath_softc *sc)
420 struct ath_hw *ah = sc->sc_ah;
423 ath9k_hw_btcoex_init_scheme(ah);
425 switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) {
426 case ATH_BTCOEX_CFG_NONE:
428 case ATH_BTCOEX_CFG_2WIRE:
429 ath9k_hw_btcoex_init_2wire(sc->sc_ah);
431 case ATH_BTCOEX_CFG_3WIRE:
432 ath9k_hw_btcoex_init_3wire(sc->sc_ah);
433 r = ath_init_btcoex_timer(sc);
436 txq = sc->tx.txq_map[WME_AC_BE];
437 ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
438 sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
439 if (ath9k_hw_mci_is_enabled(ah)) {
440 sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
441 INIT_LIST_HEAD(&sc->btcoex.mci.info);
443 r = ath_mci_setup(sc);
447 ath9k_hw_btcoex_init_mci(ah);
459 #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */