Commit | Line | Data |
---|---|---|
0fca65c1 | 1 | /* |
5b68138e | 2 | * Copyright (c) 2008-2011 Atheros Communications Inc. |
0fca65c1 S |
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 | ||
0cf55c21 | 23 | #ifdef CONFIG_MAC80211_LEDS |
0fca65c1 S |
24 | static void ath_led_brightness(struct led_classdev *led_cdev, |
25 | enum led_brightness brightness) | |
26 | { | |
0cf55c21 FF |
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)); | |
0fca65c1 S |
29 | } |
30 | ||
31 | void ath_deinit_leds(struct ath_softc *sc) | |
32 | { | |
0cf55c21 FF |
33 | if (!sc->led_registered) |
34 | return; | |
35 | ||
36 | ath_led_brightness(&sc->led_cdev, LED_OFF); | |
37 | led_classdev_unregister(&sc->led_cdev); | |
0fca65c1 S |
38 | } |
39 | ||
40 | void ath_init_leds(struct ath_softc *sc) | |
41 | { | |
0fca65c1 S |
42 | int ret; |
43 | ||
6de66dd9 FF |
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; | |
353e5019 SB |
49 | else if (AR_SREV_9300(sc->sc_ah)) |
50 | sc->sc_ah->led_pin = ATH_LED_PIN_9300; | |
79ac9b30 MSS |
51 | else if (AR_SREV_9480(sc->sc_ah)) |
52 | sc->sc_ah->led_pin = ATH_LED_PIN_9480; | |
6de66dd9 FF |
53 | else |
54 | sc->sc_ah->led_pin = ATH_LED_PIN_DEF; | |
55 | } | |
0fca65c1 S |
56 | |
57 | /* Configure gpio 1 for output */ | |
58 | ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin, | |
59 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); | |
60 | /* LED off, active low */ | |
61 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1); | |
62 | ||
0cf55c21 FF |
63 | if (!led_blink) |
64 | sc->led_cdev.default_trigger = | |
65 | ieee80211_get_radio_led_name(sc->hw); | |
66 | ||
67 | snprintf(sc->led_name, sizeof(sc->led_name), | |
68 | "ath9k-%s", wiphy_name(sc->hw->wiphy)); | |
69 | sc->led_cdev.name = sc->led_name; | |
70 | sc->led_cdev.brightness_set = ath_led_brightness; | |
71 | ||
72 | ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev); | |
73 | if (ret < 0) | |
74 | return; | |
75 | ||
76 | sc->led_registered = true; | |
0fca65c1 | 77 | } |
0cf55c21 | 78 | #endif |
0fca65c1 S |
79 | |
80 | /*******************/ | |
81 | /* Rfkill */ | |
82 | /*******************/ | |
83 | ||
84 | static bool ath_is_rfkill_set(struct ath_softc *sc) | |
85 | { | |
86 | struct ath_hw *ah = sc->sc_ah; | |
90826313 | 87 | bool is_blocked; |
0fca65c1 | 88 | |
90826313 MSS |
89 | ath9k_ps_wakeup(sc); |
90 | is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) == | |
0fca65c1 | 91 | ah->rfkill_polarity; |
90826313 MSS |
92 | ath9k_ps_restore(sc); |
93 | ||
94 | return is_blocked; | |
0fca65c1 S |
95 | } |
96 | ||
97 | void ath9k_rfkill_poll_state(struct ieee80211_hw *hw) | |
98 | { | |
9ac58615 | 99 | struct ath_softc *sc = hw->priv; |
0fca65c1 S |
100 | bool blocked = !!ath_is_rfkill_set(sc); |
101 | ||
102 | wiphy_rfkill_set_hw_state(hw->wiphy, blocked); | |
103 | } | |
104 | ||
105 | void ath_start_rfkill_poll(struct ath_softc *sc) | |
106 | { | |
107 | struct ath_hw *ah = sc->sc_ah; | |
108 | ||
109 | if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) | |
110 | wiphy_rfkill_start_polling(sc->hw->wiphy); | |
111 | } | |
112 | ||
113 | /******************/ | |
114 | /* BTCOEX */ | |
115 | /******************/ | |
116 | ||
117 | /* | |
118 | * Detects if there is any priority bt traffic | |
119 | */ | |
120 | static void ath_detect_bt_priority(struct ath_softc *sc) | |
121 | { | |
122 | struct ath_btcoex *btcoex = &sc->btcoex; | |
123 | struct ath_hw *ah = sc->sc_ah; | |
124 | ||
125 | if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio)) | |
126 | btcoex->bt_priority_cnt++; | |
127 | ||
128 | if (time_after(jiffies, btcoex->bt_priority_time + | |
129 | msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) { | |
58da1318 VT |
130 | sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED | SC_OP_BT_SCAN); |
131 | /* Detect if colocated bt started scanning */ | |
132 | if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) { | |
226afe68 JP |
133 | ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX, |
134 | "BT scan detected\n"); | |
58da1318 VT |
135 | sc->sc_flags |= (SC_OP_BT_SCAN | |
136 | SC_OP_BT_PRIORITY_DETECTED); | |
137 | } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) { | |
226afe68 JP |
138 | ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX, |
139 | "BT priority traffic detected\n"); | |
0fca65c1 | 140 | sc->sc_flags |= SC_OP_BT_PRIORITY_DETECTED; |
0fca65c1 S |
141 | } |
142 | ||
143 | btcoex->bt_priority_cnt = 0; | |
144 | btcoex->bt_priority_time = jiffies; | |
145 | } | |
146 | } | |
147 | ||
0fca65c1 S |
148 | static void ath9k_gen_timer_start(struct ath_hw *ah, |
149 | struct ath_gen_timer *timer, | |
788f6875 | 150 | u32 trig_timeout, |
0fca65c1 S |
151 | u32 timer_period) |
152 | { | |
788f6875 | 153 | ath9k_hw_gen_timer_start(ah, timer, trig_timeout, timer_period); |
0fca65c1 | 154 | |
3069168c | 155 | if ((ah->imask & ATH9K_INT_GENTIMER) == 0) { |
4df3071e | 156 | ath9k_hw_disable_interrupts(ah); |
3069168c PR |
157 | ah->imask |= ATH9K_INT_GENTIMER; |
158 | ath9k_hw_set_interrupts(ah, ah->imask); | |
b037b693 | 159 | ath9k_hw_enable_interrupts(ah); |
0fca65c1 S |
160 | } |
161 | } | |
162 | ||
163 | static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer) | |
164 | { | |
0fca65c1 S |
165 | struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers; |
166 | ||
167 | ath9k_hw_gen_timer_stop(ah, timer); | |
168 | ||
169 | /* if no timer is enabled, turn off interrupt mask */ | |
170 | if (timer_table->timer_mask.val == 0) { | |
4df3071e | 171 | ath9k_hw_disable_interrupts(ah); |
3069168c PR |
172 | ah->imask &= ~ATH9K_INT_GENTIMER; |
173 | ath9k_hw_set_interrupts(ah, ah->imask); | |
b037b693 | 174 | ath9k_hw_enable_interrupts(ah); |
0fca65c1 S |
175 | } |
176 | } | |
177 | ||
178 | /* | |
179 | * This is the master bt coex timer which runs for every | |
180 | * 45ms, bt traffic will be given priority during 55% of this | |
181 | * period while wlan gets remaining 45% | |
182 | */ | |
183 | static void ath_btcoex_period_timer(unsigned long data) | |
184 | { | |
185 | struct ath_softc *sc = (struct ath_softc *) data; | |
186 | struct ath_hw *ah = sc->sc_ah; | |
187 | struct ath_btcoex *btcoex = &sc->btcoex; | |
58da1318 VT |
188 | u32 timer_period; |
189 | bool is_btscan; | |
0fca65c1 | 190 | |
a039a993 | 191 | ath9k_ps_wakeup(sc); |
0fca65c1 S |
192 | ath_detect_bt_priority(sc); |
193 | ||
58da1318 VT |
194 | is_btscan = sc->sc_flags & SC_OP_BT_SCAN; |
195 | ||
0fca65c1 S |
196 | spin_lock_bh(&btcoex->btcoex_lock); |
197 | ||
978f78bf | 198 | ath9k_hw_btcoex_bt_stomp(ah, is_btscan ? ATH_BTCOEX_STOMP_ALL : |
58da1318 | 199 | btcoex->bt_stomp_type); |
0fca65c1 S |
200 | |
201 | spin_unlock_bh(&btcoex->btcoex_lock); | |
202 | ||
203 | if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) { | |
204 | if (btcoex->hw_timer_enabled) | |
205 | ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer); | |
206 | ||
58da1318 VT |
207 | timer_period = is_btscan ? btcoex->btscan_no_stomp : |
208 | btcoex->btcoex_no_stomp; | |
788f6875 | 209 | ath9k_gen_timer_start(ah, btcoex->no_stomp_timer, timer_period, |
8eb1dabb | 210 | timer_period * 10); |
0fca65c1 S |
211 | btcoex->hw_timer_enabled = true; |
212 | } | |
213 | ||
a039a993 | 214 | ath9k_ps_restore(sc); |
0fca65c1 S |
215 | mod_timer(&btcoex->period_timer, jiffies + |
216 | msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD)); | |
217 | } | |
218 | ||
219 | /* | |
220 | * Generic tsf based hw timer which configures weight | |
221 | * registers to time slice between wlan and bt traffic | |
222 | */ | |
223 | static void ath_btcoex_no_stomp_timer(void *arg) | |
224 | { | |
225 | struct ath_softc *sc = (struct ath_softc *)arg; | |
226 | struct ath_hw *ah = sc->sc_ah; | |
227 | struct ath_btcoex *btcoex = &sc->btcoex; | |
d99eeb87 | 228 | struct ath_common *common = ath9k_hw_common(ah); |
58da1318 | 229 | bool is_btscan = sc->sc_flags & SC_OP_BT_SCAN; |
0fca65c1 | 230 | |
226afe68 JP |
231 | ath_dbg(common, ATH_DBG_BTCOEX, |
232 | "no stomp timer running\n"); | |
0fca65c1 | 233 | |
a039a993 | 234 | ath9k_ps_wakeup(sc); |
0fca65c1 S |
235 | spin_lock_bh(&btcoex->btcoex_lock); |
236 | ||
58da1318 | 237 | if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || is_btscan) |
978f78bf | 238 | ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE); |
0fca65c1 | 239 | else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL) |
978f78bf | 240 | ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW); |
0fca65c1 S |
241 | |
242 | spin_unlock_bh(&btcoex->btcoex_lock); | |
a039a993 | 243 | ath9k_ps_restore(sc); |
0fca65c1 S |
244 | } |
245 | ||
246 | int ath_init_btcoex_timer(struct ath_softc *sc) | |
247 | { | |
248 | struct ath_btcoex *btcoex = &sc->btcoex; | |
249 | ||
250 | btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000; | |
251 | btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) * | |
252 | btcoex->btcoex_period / 100; | |
58da1318 VT |
253 | btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) * |
254 | btcoex->btcoex_period / 100; | |
0fca65c1 S |
255 | |
256 | setup_timer(&btcoex->period_timer, ath_btcoex_period_timer, | |
257 | (unsigned long) sc); | |
258 | ||
259 | spin_lock_init(&btcoex->btcoex_lock); | |
260 | ||
261 | btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah, | |
262 | ath_btcoex_no_stomp_timer, | |
263 | ath_btcoex_no_stomp_timer, | |
264 | (void *) sc, AR_FIRST_NDP_TIMER); | |
265 | ||
266 | if (!btcoex->no_stomp_timer) | |
267 | return -ENOMEM; | |
268 | ||
269 | return 0; | |
270 | } | |
271 | ||
272 | /* | |
273 | * (Re)start btcoex timers | |
274 | */ | |
275 | void ath9k_btcoex_timer_resume(struct ath_softc *sc) | |
276 | { | |
277 | struct ath_btcoex *btcoex = &sc->btcoex; | |
278 | struct ath_hw *ah = sc->sc_ah; | |
279 | ||
226afe68 JP |
280 | ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX, |
281 | "Starting btcoex timers\n"); | |
0fca65c1 S |
282 | |
283 | /* make sure duty cycle timer is also stopped when resuming */ | |
284 | if (btcoex->hw_timer_enabled) | |
285 | ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer); | |
286 | ||
287 | btcoex->bt_priority_cnt = 0; | |
288 | btcoex->bt_priority_time = jiffies; | |
58da1318 | 289 | sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED | SC_OP_BT_SCAN); |
0fca65c1 S |
290 | |
291 | mod_timer(&btcoex->period_timer, jiffies); | |
292 | } | |
293 | ||
294 | ||
295 | /* | |
296 | * Pause btcoex timer and bt duty cycle timer | |
297 | */ | |
298 | void ath9k_btcoex_timer_pause(struct ath_softc *sc) | |
299 | { | |
300 | struct ath_btcoex *btcoex = &sc->btcoex; | |
301 | struct ath_hw *ah = sc->sc_ah; | |
302 | ||
303 | del_timer_sync(&btcoex->period_timer); | |
304 | ||
305 | if (btcoex->hw_timer_enabled) | |
306 | ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer); | |
307 | ||
308 | btcoex->hw_timer_enabled = false; | |
309 | } |