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 #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 (sc
->sc_ah
->led_pin
< 0) {
45 if (AR_SREV_9287(sc
->sc_ah
))
46 sc
->sc_ah
->led_pin
= ATH_LED_PIN_9287
;
47 else if (AR_SREV_9485(sc
->sc_ah
))
48 sc
->sc_ah
->led_pin
= ATH_LED_PIN_9485
;
49 else if (AR_SREV_9300(sc
->sc_ah
))
50 sc
->sc_ah
->led_pin
= ATH_LED_PIN_9300
;
52 sc
->sc_ah
->led_pin
= ATH_LED_PIN_DEF
;
55 /* Configure gpio 1 for output */
56 ath9k_hw_cfg_output(sc
->sc_ah
, sc
->sc_ah
->led_pin
,
57 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
58 /* LED off, active low */
59 ath9k_hw_set_gpio(sc
->sc_ah
, sc
->sc_ah
->led_pin
, 1);
62 sc
->led_cdev
.default_trigger
=
63 ieee80211_get_radio_led_name(sc
->hw
);
65 snprintf(sc
->led_name
, sizeof(sc
->led_name
),
66 "ath9k-%s", wiphy_name(sc
->hw
->wiphy
));
67 sc
->led_cdev
.name
= sc
->led_name
;
68 sc
->led_cdev
.brightness_set
= ath_led_brightness
;
70 ret
= led_classdev_register(wiphy_dev(sc
->hw
->wiphy
), &sc
->led_cdev
);
74 sc
->led_registered
= true;
82 static bool ath_is_rfkill_set(struct ath_softc
*sc
)
84 struct ath_hw
*ah
= sc
->sc_ah
;
86 return ath9k_hw_gpio_get(ah
, ah
->rfkill_gpio
) ==
90 void ath9k_rfkill_poll_state(struct ieee80211_hw
*hw
)
92 struct ath_softc
*sc
= hw
->priv
;
93 bool blocked
= !!ath_is_rfkill_set(sc
);
95 wiphy_rfkill_set_hw_state(hw
->wiphy
, blocked
);
98 void ath_start_rfkill_poll(struct ath_softc
*sc
)
100 struct ath_hw
*ah
= sc
->sc_ah
;
102 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_RFSILENT
)
103 wiphy_rfkill_start_polling(sc
->hw
->wiphy
);
111 * Detects if there is any priority bt traffic
113 static void ath_detect_bt_priority(struct ath_softc
*sc
)
115 struct ath_btcoex
*btcoex
= &sc
->btcoex
;
116 struct ath_hw
*ah
= sc
->sc_ah
;
118 if (ath9k_hw_gpio_get(sc
->sc_ah
, ah
->btcoex_hw
.btpriority_gpio
))
119 btcoex
->bt_priority_cnt
++;
121 if (time_after(jiffies
, btcoex
->bt_priority_time
+
122 msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD
))) {
123 sc
->sc_flags
&= ~(SC_OP_BT_PRIORITY_DETECTED
| SC_OP_BT_SCAN
);
124 /* Detect if colocated bt started scanning */
125 if (btcoex
->bt_priority_cnt
>= ATH_BT_CNT_SCAN_THRESHOLD
) {
126 ath_dbg(ath9k_hw_common(sc
->sc_ah
), ATH_DBG_BTCOEX
,
127 "BT scan detected\n");
128 sc
->sc_flags
|= (SC_OP_BT_SCAN
|
129 SC_OP_BT_PRIORITY_DETECTED
);
130 } else if (btcoex
->bt_priority_cnt
>= ATH_BT_CNT_THRESHOLD
) {
131 ath_dbg(ath9k_hw_common(sc
->sc_ah
), ATH_DBG_BTCOEX
,
132 "BT priority traffic detected\n");
133 sc
->sc_flags
|= SC_OP_BT_PRIORITY_DETECTED
;
136 btcoex
->bt_priority_cnt
= 0;
137 btcoex
->bt_priority_time
= jiffies
;
141 static void ath9k_gen_timer_start(struct ath_hw
*ah
,
142 struct ath_gen_timer
*timer
,
146 ath9k_hw_gen_timer_start(ah
, timer
, trig_timeout
, timer_period
);
148 if ((ah
->imask
& ATH9K_INT_GENTIMER
) == 0) {
149 ath9k_hw_disable_interrupts(ah
);
150 ah
->imask
|= ATH9K_INT_GENTIMER
;
151 ath9k_hw_set_interrupts(ah
, ah
->imask
);
155 static void ath9k_gen_timer_stop(struct ath_hw
*ah
, struct ath_gen_timer
*timer
)
157 struct ath_gen_timer_table
*timer_table
= &ah
->hw_gen_timers
;
159 ath9k_hw_gen_timer_stop(ah
, timer
);
161 /* if no timer is enabled, turn off interrupt mask */
162 if (timer_table
->timer_mask
.val
== 0) {
163 ath9k_hw_disable_interrupts(ah
);
164 ah
->imask
&= ~ATH9K_INT_GENTIMER
;
165 ath9k_hw_set_interrupts(ah
, ah
->imask
);
170 * This is the master bt coex timer which runs for every
171 * 45ms, bt traffic will be given priority during 55% of this
172 * period while wlan gets remaining 45%
174 static void ath_btcoex_period_timer(unsigned long data
)
176 struct ath_softc
*sc
= (struct ath_softc
*) data
;
177 struct ath_hw
*ah
= sc
->sc_ah
;
178 struct ath_btcoex
*btcoex
= &sc
->btcoex
;
183 ath_detect_bt_priority(sc
);
185 is_btscan
= sc
->sc_flags
& SC_OP_BT_SCAN
;
187 spin_lock_bh(&btcoex
->btcoex_lock
);
189 ath9k_hw_btcoex_bt_stomp(ah
, is_btscan
? ATH_BTCOEX_STOMP_ALL
:
190 btcoex
->bt_stomp_type
);
192 spin_unlock_bh(&btcoex
->btcoex_lock
);
194 if (btcoex
->btcoex_period
!= btcoex
->btcoex_no_stomp
) {
195 if (btcoex
->hw_timer_enabled
)
196 ath9k_gen_timer_stop(ah
, btcoex
->no_stomp_timer
);
198 timer_period
= is_btscan
? btcoex
->btscan_no_stomp
:
199 btcoex
->btcoex_no_stomp
;
200 ath9k_gen_timer_start(ah
, btcoex
->no_stomp_timer
, timer_period
,
202 btcoex
->hw_timer_enabled
= true;
205 ath9k_ps_restore(sc
);
206 mod_timer(&btcoex
->period_timer
, jiffies
+
207 msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD
));
211 * Generic tsf based hw timer which configures weight
212 * registers to time slice between wlan and bt traffic
214 static void ath_btcoex_no_stomp_timer(void *arg
)
216 struct ath_softc
*sc
= (struct ath_softc
*)arg
;
217 struct ath_hw
*ah
= sc
->sc_ah
;
218 struct ath_btcoex
*btcoex
= &sc
->btcoex
;
219 struct ath_common
*common
= ath9k_hw_common(ah
);
220 bool is_btscan
= sc
->sc_flags
& SC_OP_BT_SCAN
;
222 ath_dbg(common
, ATH_DBG_BTCOEX
,
223 "no stomp timer running\n");
226 spin_lock_bh(&btcoex
->btcoex_lock
);
228 if (btcoex
->bt_stomp_type
== ATH_BTCOEX_STOMP_LOW
|| is_btscan
)
229 ath9k_hw_btcoex_bt_stomp(ah
, ATH_BTCOEX_STOMP_NONE
);
230 else if (btcoex
->bt_stomp_type
== ATH_BTCOEX_STOMP_ALL
)
231 ath9k_hw_btcoex_bt_stomp(ah
, ATH_BTCOEX_STOMP_LOW
);
233 spin_unlock_bh(&btcoex
->btcoex_lock
);
234 ath9k_ps_restore(sc
);
237 int ath_init_btcoex_timer(struct ath_softc
*sc
)
239 struct ath_btcoex
*btcoex
= &sc
->btcoex
;
241 btcoex
->btcoex_period
= ATH_BTCOEX_DEF_BT_PERIOD
* 1000;
242 btcoex
->btcoex_no_stomp
= (100 - ATH_BTCOEX_DEF_DUTY_CYCLE
) *
243 btcoex
->btcoex_period
/ 100;
244 btcoex
->btscan_no_stomp
= (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE
) *
245 btcoex
->btcoex_period
/ 100;
247 setup_timer(&btcoex
->period_timer
, ath_btcoex_period_timer
,
250 spin_lock_init(&btcoex
->btcoex_lock
);
252 btcoex
->no_stomp_timer
= ath_gen_timer_alloc(sc
->sc_ah
,
253 ath_btcoex_no_stomp_timer
,
254 ath_btcoex_no_stomp_timer
,
255 (void *) sc
, AR_FIRST_NDP_TIMER
);
257 if (!btcoex
->no_stomp_timer
)
264 * (Re)start btcoex timers
266 void ath9k_btcoex_timer_resume(struct ath_softc
*sc
)
268 struct ath_btcoex
*btcoex
= &sc
->btcoex
;
269 struct ath_hw
*ah
= sc
->sc_ah
;
271 ath_dbg(ath9k_hw_common(ah
), ATH_DBG_BTCOEX
,
272 "Starting btcoex timers\n");
274 /* make sure duty cycle timer is also stopped when resuming */
275 if (btcoex
->hw_timer_enabled
)
276 ath9k_gen_timer_stop(sc
->sc_ah
, btcoex
->no_stomp_timer
);
278 btcoex
->bt_priority_cnt
= 0;
279 btcoex
->bt_priority_time
= jiffies
;
280 sc
->sc_flags
&= ~(SC_OP_BT_PRIORITY_DETECTED
| SC_OP_BT_SCAN
);
282 mod_timer(&btcoex
->period_timer
, jiffies
);
287 * Pause btcoex timer and bt duty cycle timer
289 void ath9k_btcoex_timer_pause(struct ath_softc
*sc
)
291 struct ath_btcoex
*btcoex
= &sc
->btcoex
;
292 struct ath_hw
*ah
= sc
->sc_ah
;
294 del_timer_sync(&btcoex
->period_timer
);
296 if (btcoex
->hw_timer_enabled
)
297 ath9k_gen_timer_stop(ah
, btcoex
->no_stomp_timer
);
299 btcoex
->hw_timer_enabled
= false;