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1/*
2 * Copyright (c) 2008-2011 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#ifdef CONFIG_MAC80211_LEDS
24static void ath_led_brightness(struct led_classdev *led_cdev,
25 enum led_brightness brightness)
26{
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));
29}
30
31void ath_deinit_leds(struct ath_softc *sc)
32{
33 if (!sc->led_registered)
34 return;
35
36 ath_led_brightness(&sc->led_cdev, LED_OFF);
37 led_classdev_unregister(&sc->led_cdev);
38}
39
40void ath_init_leds(struct ath_softc *sc)
41{
42 int ret;
43
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;
51 else
52 sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
53 }
54
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);
60
61 if (!led_blink)
62 sc->led_cdev.default_trigger =
63 ieee80211_get_radio_led_name(sc->hw);
64
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;
69
70 ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
71 if (ret < 0)
72 return;
73
74 sc->led_registered = true;
75}
76#endif
77
78/*******************/
79/* Rfkill */
80/*******************/
81
82static bool ath_is_rfkill_set(struct ath_softc *sc)
83{
84 struct ath_hw *ah = sc->sc_ah;
85
86 return ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
87 ah->rfkill_polarity;
88}
89
90void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
91{
92 struct ath_softc *sc = hw->priv;
93 bool blocked = !!ath_is_rfkill_set(sc);
94
95 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
96}
97
98void ath_start_rfkill_poll(struct ath_softc *sc)
99{
100 struct ath_hw *ah = sc->sc_ah;
101
102 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
103 wiphy_rfkill_start_polling(sc->hw->wiphy);
104}
105
106/******************/
107/* BTCOEX */
108/******************/
109
110/*
111 * Detects if there is any priority bt traffic
112 */
113static void ath_detect_bt_priority(struct ath_softc *sc)
114{
115 struct ath_btcoex *btcoex = &sc->btcoex;
116 struct ath_hw *ah = sc->sc_ah;
117
118 if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
119 btcoex->bt_priority_cnt++;
120
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;
134 }
135
136 btcoex->bt_priority_cnt = 0;
137 btcoex->bt_priority_time = jiffies;
138 }
139}
140
141static void ath9k_gen_timer_start(struct ath_hw *ah,
142 struct ath_gen_timer *timer,
143 u32 trig_timeout,
144 u32 timer_period)
145{
146 ath9k_hw_gen_timer_start(ah, timer, trig_timeout, timer_period);
147
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);
152 }
153}
154
155static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
156{
157 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
158
159 ath9k_hw_gen_timer_stop(ah, timer);
160
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);
166 }
167}
168
169/*
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%
173 */
174static void ath_btcoex_period_timer(unsigned long data)
175{
176 struct ath_softc *sc = (struct ath_softc *) data;
177 struct ath_hw *ah = sc->sc_ah;
178 struct ath_btcoex *btcoex = &sc->btcoex;
179 u32 timer_period;
180 bool is_btscan;
181
182 ath9k_ps_wakeup(sc);
183 ath_detect_bt_priority(sc);
184
185 is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
186
187 spin_lock_bh(&btcoex->btcoex_lock);
188
189 ath9k_hw_btcoex_bt_stomp(ah, is_btscan ? ATH_BTCOEX_STOMP_ALL :
190 btcoex->bt_stomp_type);
191
192 spin_unlock_bh(&btcoex->btcoex_lock);
193
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);
197
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,
201 timer_period * 10);
202 btcoex->hw_timer_enabled = true;
203 }
204
205 ath9k_ps_restore(sc);
206 mod_timer(&btcoex->period_timer, jiffies +
207 msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD));
208}
209
210/*
211 * Generic tsf based hw timer which configures weight
212 * registers to time slice between wlan and bt traffic
213 */
214static void ath_btcoex_no_stomp_timer(void *arg)
215{
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;
221
222 ath_dbg(common, ATH_DBG_BTCOEX,
223 "no stomp timer running\n");
224
225 ath9k_ps_wakeup(sc);
226 spin_lock_bh(&btcoex->btcoex_lock);
227
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);
232
233 spin_unlock_bh(&btcoex->btcoex_lock);
234 ath9k_ps_restore(sc);
235}
236
237int ath_init_btcoex_timer(struct ath_softc *sc)
238{
239 struct ath_btcoex *btcoex = &sc->btcoex;
240
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;
246
247 setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
248 (unsigned long) sc);
249
250 spin_lock_init(&btcoex->btcoex_lock);
251
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);
256
257 if (!btcoex->no_stomp_timer)
258 return -ENOMEM;
259
260 return 0;
261}
262
263/*
264 * (Re)start btcoex timers
265 */
266void ath9k_btcoex_timer_resume(struct ath_softc *sc)
267{
268 struct ath_btcoex *btcoex = &sc->btcoex;
269 struct ath_hw *ah = sc->sc_ah;
270
271 ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
272 "Starting btcoex timers\n");
273
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);
277
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);
281
282 mod_timer(&btcoex->period_timer, jiffies);
283}
284
285
286/*
287 * Pause btcoex timer and bt duty cycle timer
288 */
289void ath9k_btcoex_timer_pause(struct ath_softc *sc)
290{
291 struct ath_btcoex *btcoex = &sc->btcoex;
292 struct ath_hw *ah = sc->sc_ah;
293
294 del_timer_sync(&btcoex->period_timer);
295
296 if (btcoex->hw_timer_enabled)
297 ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
298
299 btcoex->hw_timer_enabled = false;
300}
1/*
2 * Copyright (c) 2008-2011 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#ifdef CONFIG_MAC80211_LEDS
24static void ath_led_brightness(struct led_classdev *led_cdev,
25 enum led_brightness brightness)
26{
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));
29}
30
31void ath_deinit_leds(struct ath_softc *sc)
32{
33 if (!sc->led_registered)
34 return;
35
36 ath_led_brightness(&sc->led_cdev, LED_OFF);
37 led_classdev_unregister(&sc->led_cdev);
38}
39
40void ath_init_leds(struct ath_softc *sc)
41{
42 int ret;
43
44 if (AR_SREV_9100(sc->sc_ah))
45 return;
46
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;
56 else
57 sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
58 }
59
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);
65
66 if (!led_blink)
67 sc->led_cdev.default_trigger =
68 ieee80211_get_radio_led_name(sc->hw);
69
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;
74
75 ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
76 if (ret < 0)
77 return;
78
79 sc->led_registered = true;
80}
81#endif
82
83/*******************/
84/* Rfkill */
85/*******************/
86
87static bool ath_is_rfkill_set(struct ath_softc *sc)
88{
89 struct ath_hw *ah = sc->sc_ah;
90 bool is_blocked;
91
92 ath9k_ps_wakeup(sc);
93 is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
94 ah->rfkill_polarity;
95 ath9k_ps_restore(sc);
96
97 return is_blocked;
98}
99
100void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
101{
102 struct ath_softc *sc = hw->priv;
103 bool blocked = !!ath_is_rfkill_set(sc);
104
105 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
106}
107
108void ath_start_rfkill_poll(struct ath_softc *sc)
109{
110 struct ath_hw *ah = sc->sc_ah;
111
112 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
113 wiphy_rfkill_start_polling(sc->hw->wiphy);
114}
115
116#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
117
118/******************/
119/* BTCOEX */
120/******************/
121
122/*
123 * Detects if there is any priority bt traffic
124 */
125static void ath_detect_bt_priority(struct ath_softc *sc)
126{
127 struct ath_btcoex *btcoex = &sc->btcoex;
128 struct ath_hw *ah = sc->sc_ah;
129
130 if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
131 btcoex->bt_priority_cnt++;
132
133 if (time_after(jiffies, btcoex->bt_priority_time +
134 msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
135 sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED | SC_OP_BT_SCAN);
136 /* Detect if colocated bt started scanning */
137 if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
138 ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
139 "BT scan detected\n");
140 sc->sc_flags |= (SC_OP_BT_SCAN |
141 SC_OP_BT_PRIORITY_DETECTED);
142 } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
143 ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
144 "BT priority traffic detected\n");
145 sc->sc_flags |= SC_OP_BT_PRIORITY_DETECTED;
146 }
147
148 btcoex->bt_priority_cnt = 0;
149 btcoex->bt_priority_time = jiffies;
150 }
151}
152
153static void ath9k_gen_timer_start(struct ath_hw *ah,
154 struct ath_gen_timer *timer,
155 u32 trig_timeout,
156 u32 timer_period)
157{
158 ath9k_hw_gen_timer_start(ah, timer, trig_timeout, timer_period);
159
160 if ((ah->imask & ATH9K_INT_GENTIMER) == 0) {
161 ath9k_hw_disable_interrupts(ah);
162 ah->imask |= ATH9K_INT_GENTIMER;
163 ath9k_hw_set_interrupts(ah);
164 ath9k_hw_enable_interrupts(ah);
165 }
166}
167
168static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
169{
170 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
171
172 ath9k_hw_gen_timer_stop(ah, timer);
173
174 /* if no timer is enabled, turn off interrupt mask */
175 if (timer_table->timer_mask.val == 0) {
176 ath9k_hw_disable_interrupts(ah);
177 ah->imask &= ~ATH9K_INT_GENTIMER;
178 ath9k_hw_set_interrupts(ah);
179 ath9k_hw_enable_interrupts(ah);
180 }
181}
182
183/*
184 * This is the master bt coex timer which runs for every
185 * 45ms, bt traffic will be given priority during 55% of this
186 * period while wlan gets remaining 45%
187 */
188static void ath_btcoex_period_timer(unsigned long data)
189{
190 struct ath_softc *sc = (struct ath_softc *) data;
191 struct ath_hw *ah = sc->sc_ah;
192 struct ath_btcoex *btcoex = &sc->btcoex;
193 u32 timer_period;
194 bool is_btscan;
195
196 ath9k_ps_wakeup(sc);
197 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
198 ath_detect_bt_priority(sc);
199 is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
200
201 spin_lock_bh(&btcoex->btcoex_lock);
202
203 ath9k_hw_btcoex_bt_stomp(ah, is_btscan ? ATH_BTCOEX_STOMP_ALL :
204 btcoex->bt_stomp_type);
205
206 ath9k_hw_btcoex_enable(ah);
207 spin_unlock_bh(&btcoex->btcoex_lock);
208
209 if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) {
210 if (btcoex->hw_timer_enabled)
211 ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
212
213 timer_period = is_btscan ? btcoex->btscan_no_stomp :
214 btcoex->btcoex_no_stomp;
215 ath9k_gen_timer_start(ah, btcoex->no_stomp_timer, timer_period,
216 timer_period * 10);
217 btcoex->hw_timer_enabled = true;
218 }
219
220 ath9k_ps_restore(sc);
221 timer_period = btcoex->btcoex_period / 1000;
222 mod_timer(&btcoex->period_timer, jiffies +
223 msecs_to_jiffies(timer_period));
224}
225
226/*
227 * Generic tsf based hw timer which configures weight
228 * registers to time slice between wlan and bt traffic
229 */
230static void ath_btcoex_no_stomp_timer(void *arg)
231{
232 struct ath_softc *sc = (struct ath_softc *)arg;
233 struct ath_hw *ah = sc->sc_ah;
234 struct ath_btcoex *btcoex = &sc->btcoex;
235 struct ath_common *common = ath9k_hw_common(ah);
236 bool is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
237
238 ath_dbg(common, BTCOEX, "no stomp timer running\n");
239
240 ath9k_ps_wakeup(sc);
241 spin_lock_bh(&btcoex->btcoex_lock);
242
243 if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || is_btscan)
244 ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
245 else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
246 ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
247
248 ath9k_hw_btcoex_enable(ah);
249 spin_unlock_bh(&btcoex->btcoex_lock);
250 ath9k_ps_restore(sc);
251}
252
253static int ath_init_btcoex_timer(struct ath_softc *sc)
254{
255 struct ath_btcoex *btcoex = &sc->btcoex;
256
257 btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000;
258 btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
259 btcoex->btcoex_period / 100;
260 btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
261 btcoex->btcoex_period / 100;
262
263 setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
264 (unsigned long) sc);
265
266 spin_lock_init(&btcoex->btcoex_lock);
267
268 btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah,
269 ath_btcoex_no_stomp_timer,
270 ath_btcoex_no_stomp_timer,
271 (void *) sc, AR_FIRST_NDP_TIMER);
272
273 if (!btcoex->no_stomp_timer)
274 return -ENOMEM;
275
276 return 0;
277}
278
279/*
280 * (Re)start btcoex timers
281 */
282void ath9k_btcoex_timer_resume(struct ath_softc *sc)
283{
284 struct ath_btcoex *btcoex = &sc->btcoex;
285 struct ath_hw *ah = sc->sc_ah;
286
287 ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex timers\n");
288
289 /* make sure duty cycle timer is also stopped when resuming */
290 if (btcoex->hw_timer_enabled)
291 ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
292
293 btcoex->bt_priority_cnt = 0;
294 btcoex->bt_priority_time = jiffies;
295 sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED | SC_OP_BT_SCAN);
296
297 mod_timer(&btcoex->period_timer, jiffies);
298}
299
300
301/*
302 * Pause btcoex timer and bt duty cycle timer
303 */
304void ath9k_btcoex_timer_pause(struct ath_softc *sc)
305{
306 struct ath_btcoex *btcoex = &sc->btcoex;
307 struct ath_hw *ah = sc->sc_ah;
308
309 del_timer_sync(&btcoex->period_timer);
310
311 if (btcoex->hw_timer_enabled)
312 ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
313
314 btcoex->hw_timer_enabled = false;
315}
316
317u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen)
318{
319 struct ath_mci_profile *mci = &sc->btcoex.mci;
320 u16 aggr_limit = 0;
321
322 if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit)
323 aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4;
324 else if (sc->sc_flags & SC_OP_BT_PRIORITY_DETECTED)
325 aggr_limit = min((max_4ms_framelen * 3) / 8,
326 (u32)ATH_AMPDU_LIMIT_MAX);
327
328 return aggr_limit;
329}
330
331void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status)
332{
333 struct ath_hw *ah = sc->sc_ah;
334
335 if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
336 if (status & ATH9K_INT_GENTIMER)
337 ath_gen_timer_isr(sc->sc_ah);
338
339 if (status & ATH9K_INT_MCI)
340 ath_mci_intr(sc);
341}
342
343void ath9k_start_btcoex(struct ath_softc *sc)
344{
345 struct ath_hw *ah = sc->sc_ah;
346
347 if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
348 !ah->btcoex_hw.enabled) {
349 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
350 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
351 AR_STOMP_LOW_WLAN_WGHT);
352 ath9k_hw_btcoex_enable(ah);
353
354 if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
355 ath9k_btcoex_timer_resume(sc);
356 }
357}
358
359void ath9k_stop_btcoex(struct ath_softc *sc)
360{
361 struct ath_hw *ah = sc->sc_ah;
362
363 if (ah->btcoex_hw.enabled &&
364 ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
365 ath9k_hw_btcoex_disable(ah);
366 if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
367 ath9k_btcoex_timer_pause(sc);
368 if (AR_SREV_9462(ah))
369 ath_mci_flush_profile(&sc->btcoex.mci);
370 }
371}
372
373void ath9k_deinit_btcoex(struct ath_softc *sc)
374{
375 if ((sc->btcoex.no_stomp_timer) &&
376 ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_3WIRE)
377 ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);
378
379 if (AR_SREV_9462(sc->sc_ah))
380 ath_mci_cleanup(sc);
381}
382
383int ath9k_init_btcoex(struct ath_softc *sc)
384{
385 struct ath_txq *txq;
386 struct ath_hw *ah = sc->sc_ah;
387 int r;
388
389 ath9k_hw_btcoex_init_scheme(ah);
390
391 switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) {
392 case ATH_BTCOEX_CFG_NONE:
393 break;
394 case ATH_BTCOEX_CFG_2WIRE:
395 ath9k_hw_btcoex_init_2wire(sc->sc_ah);
396 break;
397 case ATH_BTCOEX_CFG_3WIRE:
398 ath9k_hw_btcoex_init_3wire(sc->sc_ah);
399 r = ath_init_btcoex_timer(sc);
400 if (r)
401 return -1;
402 txq = sc->tx.txq_map[WME_AC_BE];
403 ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
404 sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
405 if (AR_SREV_9462(ah)) {
406 sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
407 INIT_LIST_HEAD(&sc->btcoex.mci.info);
408
409 r = ath_mci_setup(sc);
410 if (r)
411 return r;
412
413 ath9k_hw_btcoex_init_mci(ah);
414 }
415
416 break;
417 default:
418 WARN_ON(1);
419 break;
420 }
421
422 return 0;
423}
424
425#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */