Commit | Line | Data |
---|---|---|
1e1f4ad2 | 1 | /* |
5b68138e | 2 | * Copyright (c) 2010-2011 Atheros Communications Inc. |
1e1f4ad2 SM |
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 | ||
21cb9879 VN |
17 | #include "htc.h" |
18 | ||
19 | /******************/ | |
20 | /* BTCOEX */ | |
21 | /******************/ | |
22 | ||
cee5341d SM |
23 | #define ATH_HTC_BTCOEX_PRODUCT_ID "wb193" |
24 | ||
9d5b80fd SM |
25 | #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT |
26 | ||
21cb9879 VN |
27 | /* |
28 | * Detects if there is any priority bt traffic | |
29 | */ | |
30 | static void ath_detect_bt_priority(struct ath9k_htc_priv *priv) | |
31 | { | |
32 | struct ath_btcoex *btcoex = &priv->btcoex; | |
33 | struct ath_hw *ah = priv->ah; | |
34 | ||
35 | if (ath9k_hw_gpio_get(ah, ah->btcoex_hw.btpriority_gpio)) | |
36 | btcoex->bt_priority_cnt++; | |
37 | ||
38 | if (time_after(jiffies, btcoex->bt_priority_time + | |
39 | msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) { | |
d8a2c51c SM |
40 | clear_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
41 | clear_bit(OP_BT_SCAN, &priv->op_flags); | |
21cb9879 VN |
42 | /* Detect if colocated bt started scanning */ |
43 | if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) { | |
d2182b69 | 44 | ath_dbg(ath9k_hw_common(ah), BTCOEX, |
226afe68 | 45 | "BT scan detected\n"); |
d8a2c51c SM |
46 | set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
47 | set_bit(OP_BT_SCAN, &priv->op_flags); | |
21cb9879 | 48 | } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) { |
d2182b69 | 49 | ath_dbg(ath9k_hw_common(ah), BTCOEX, |
226afe68 | 50 | "BT priority traffic detected\n"); |
d8a2c51c | 51 | set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
21cb9879 VN |
52 | } |
53 | ||
54 | btcoex->bt_priority_cnt = 0; | |
55 | btcoex->bt_priority_time = jiffies; | |
56 | } | |
57 | } | |
58 | ||
59 | /* | |
60 | * This is the master bt coex work which runs for every | |
61 | * 45ms, bt traffic will be given priority during 55% of this | |
62 | * period while wlan gets remaining 45% | |
63 | */ | |
64 | static void ath_btcoex_period_work(struct work_struct *work) | |
65 | { | |
66 | struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv, | |
67 | coex_period_work.work); | |
68 | struct ath_btcoex *btcoex = &priv->btcoex; | |
69 | struct ath_common *common = ath9k_hw_common(priv->ah); | |
70 | u32 timer_period; | |
21cb9879 | 71 | int ret; |
21cb9879 VN |
72 | |
73 | ath_detect_bt_priority(priv); | |
74 | ||
3a0593ef | 75 | ret = ath9k_htc_update_cap_target(priv, |
d8a2c51c | 76 | test_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags)); |
0ff2b5c0 SM |
77 | if (ret) { |
78 | ath_err(common, "Unable to set BTCOEX parameters\n"); | |
79 | return; | |
80 | } | |
21cb9879 | 81 | |
d8a2c51c SM |
82 | ath9k_hw_btcoex_bt_stomp(priv->ah, test_bit(OP_BT_SCAN, &priv->op_flags) ? |
83 | ATH_BTCOEX_STOMP_ALL : btcoex->bt_stomp_type); | |
21cb9879 | 84 | |
bc6d5c29 | 85 | ath9k_hw_btcoex_enable(priv->ah); |
d8a2c51c SM |
86 | timer_period = test_bit(OP_BT_SCAN, &priv->op_flags) ? |
87 | btcoex->btscan_no_stomp : btcoex->btcoex_no_stomp; | |
21cb9879 VN |
88 | ieee80211_queue_delayed_work(priv->hw, &priv->duty_cycle_work, |
89 | msecs_to_jiffies(timer_period)); | |
90 | ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, | |
91 | msecs_to_jiffies(btcoex->btcoex_period)); | |
92 | } | |
93 | ||
94 | /* | |
95 | * Work to time slice between wlan and bt traffic and | |
96 | * configure weight registers | |
97 | */ | |
98 | static void ath_btcoex_duty_cycle_work(struct work_struct *work) | |
99 | { | |
100 | struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv, | |
101 | duty_cycle_work.work); | |
102 | struct ath_hw *ah = priv->ah; | |
103 | struct ath_btcoex *btcoex = &priv->btcoex; | |
104 | struct ath_common *common = ath9k_hw_common(ah); | |
21cb9879 | 105 | |
d2182b69 | 106 | ath_dbg(common, BTCOEX, "time slice work for bt and wlan\n"); |
21cb9879 | 107 | |
d8a2c51c SM |
108 | if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || |
109 | test_bit(OP_BT_SCAN, &priv->op_flags)) | |
978f78bf | 110 | ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE); |
21cb9879 | 111 | else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL) |
978f78bf | 112 | ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW); |
d8a2c51c | 113 | |
bc6d5c29 | 114 | ath9k_hw_btcoex_enable(priv->ah); |
21cb9879 VN |
115 | } |
116 | ||
9d5b80fd | 117 | static void ath_htc_init_btcoex_work(struct ath9k_htc_priv *priv) |
21cb9879 VN |
118 | { |
119 | struct ath_btcoex *btcoex = &priv->btcoex; | |
120 | ||
121 | btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD; | |
122 | btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) * | |
123 | btcoex->btcoex_period / 100; | |
124 | btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) * | |
125 | btcoex->btcoex_period / 100; | |
126 | INIT_DELAYED_WORK(&priv->coex_period_work, ath_btcoex_period_work); | |
127 | INIT_DELAYED_WORK(&priv->duty_cycle_work, ath_btcoex_duty_cycle_work); | |
128 | } | |
129 | ||
130 | /* | |
131 | * (Re)start btcoex work | |
132 | */ | |
133 | ||
9d5b80fd | 134 | static void ath_htc_resume_btcoex_work(struct ath9k_htc_priv *priv) |
21cb9879 VN |
135 | { |
136 | struct ath_btcoex *btcoex = &priv->btcoex; | |
137 | struct ath_hw *ah = priv->ah; | |
138 | ||
d2182b69 | 139 | ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex work\n"); |
21cb9879 VN |
140 | |
141 | btcoex->bt_priority_cnt = 0; | |
142 | btcoex->bt_priority_time = jiffies; | |
d8a2c51c SM |
143 | clear_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
144 | clear_bit(OP_BT_SCAN, &priv->op_flags); | |
21cb9879 VN |
145 | ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, 0); |
146 | } | |
147 | ||
148 | ||
149 | /* | |
150 | * Cancel btcoex and bt duty cycle work. | |
151 | */ | |
9d5b80fd | 152 | static void ath_htc_cancel_btcoex_work(struct ath9k_htc_priv *priv) |
21cb9879 VN |
153 | { |
154 | cancel_delayed_work_sync(&priv->coex_period_work); | |
155 | cancel_delayed_work_sync(&priv->duty_cycle_work); | |
156 | } | |
1e1f4ad2 | 157 | |
bf047fcd SM |
158 | void ath9k_htc_start_btcoex(struct ath9k_htc_priv *priv) |
159 | { | |
160 | struct ath_hw *ah = priv->ah; | |
161 | ||
162 | if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) { | |
163 | ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, | |
5160b46f | 164 | AR_STOMP_LOW_WLAN_WGHT, 0); |
bf047fcd SM |
165 | ath9k_hw_btcoex_enable(ah); |
166 | ath_htc_resume_btcoex_work(priv); | |
167 | } | |
168 | } | |
169 | ||
170 | void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv) | |
171 | { | |
172 | struct ath_hw *ah = priv->ah; | |
173 | ||
174 | if (ah->btcoex_hw.enabled && | |
175 | ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) { | |
bf047fcd SM |
176 | if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) |
177 | ath_htc_cancel_btcoex_work(priv); | |
82781042 | 178 | ath9k_hw_btcoex_disable(ah); |
bf047fcd SM |
179 | } |
180 | } | |
181 | ||
cee5341d SM |
182 | void ath9k_htc_init_btcoex(struct ath9k_htc_priv *priv, char *product) |
183 | { | |
184 | struct ath_hw *ah = priv->ah; | |
7f34778e | 185 | struct ath_common *common = ath9k_hw_common(ah); |
cee5341d SM |
186 | int qnum; |
187 | ||
7f34778e MSS |
188 | /* |
189 | * Check if BTCOEX is globally disabled. | |
190 | */ | |
191 | if (!common->btcoex_enabled) { | |
192 | ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_NONE; | |
193 | return; | |
194 | } | |
195 | ||
cee5341d SM |
196 | if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) { |
197 | ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE; | |
cee5341d SM |
198 | } |
199 | ||
200 | switch (ath9k_hw_get_btcoex_scheme(priv->ah)) { | |
201 | case ATH_BTCOEX_CFG_NONE: | |
202 | break; | |
203 | case ATH_BTCOEX_CFG_3WIRE: | |
204 | priv->ah->btcoex_hw.btactive_gpio = 7; | |
205 | priv->ah->btcoex_hw.btpriority_gpio = 6; | |
206 | priv->ah->btcoex_hw.wlanactive_gpio = 8; | |
207 | priv->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW; | |
208 | ath9k_hw_btcoex_init_3wire(priv->ah); | |
209 | ath_htc_init_btcoex_work(priv); | |
bea843c7 | 210 | qnum = priv->hwq_map[IEEE80211_AC_BE]; |
cee5341d SM |
211 | ath9k_hw_init_btcoex_hw(priv->ah, qnum); |
212 | break; | |
213 | default: | |
214 | WARN_ON(1); | |
215 | break; | |
216 | } | |
217 | } | |
218 | ||
9d5b80fd SM |
219 | #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */ |
220 | ||
1e1f4ad2 SM |
221 | /*******/ |
222 | /* LED */ | |
223 | /*******/ | |
224 | ||
d244f21e SM |
225 | #ifdef CONFIG_MAC80211_LEDS |
226 | void ath9k_led_work(struct work_struct *work) | |
1e1f4ad2 | 227 | { |
d244f21e SM |
228 | struct ath9k_htc_priv *priv = container_of(work, |
229 | struct ath9k_htc_priv, | |
230 | led_work); | |
1e1f4ad2 | 231 | |
d244f21e SM |
232 | ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, |
233 | (priv->brightness == LED_OFF)); | |
1e1f4ad2 SM |
234 | } |
235 | ||
236 | static void ath9k_led_brightness(struct led_classdev *led_cdev, | |
237 | enum led_brightness brightness) | |
238 | { | |
d244f21e SM |
239 | struct ath9k_htc_priv *priv = container_of(led_cdev, |
240 | struct ath9k_htc_priv, | |
241 | led_cdev); | |
1e1f4ad2 | 242 | |
d244f21e SM |
243 | /* Not locked, but it's just a tiny green light..*/ |
244 | priv->brightness = brightness; | |
245 | ieee80211_queue_work(priv->hw, &priv->led_work); | |
1e1f4ad2 SM |
246 | } |
247 | ||
248 | void ath9k_deinit_leds(struct ath9k_htc_priv *priv) | |
249 | { | |
d244f21e SM |
250 | if (!priv->led_registered) |
251 | return; | |
252 | ||
253 | ath9k_led_brightness(&priv->led_cdev, LED_OFF); | |
254 | led_classdev_unregister(&priv->led_cdev); | |
255 | cancel_work_sync(&priv->led_work); | |
db222190 MP |
256 | |
257 | ath9k_hw_gpio_free(priv->ah, priv->ah->led_pin); | |
1e1f4ad2 SM |
258 | } |
259 | ||
1e51acaa OR |
260 | |
261 | void ath9k_configure_leds(struct ath9k_htc_priv *priv) | |
262 | { | |
263 | /* Configure gpio 1 for output */ | |
b2d70d49 MP |
264 | ath9k_hw_gpio_request_out(priv->ah, priv->ah->led_pin, |
265 | "ath9k-led", | |
266 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); | |
1e51acaa OR |
267 | /* LED off, active low */ |
268 | ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 1); | |
1e51acaa OR |
269 | } |
270 | ||
1e1f4ad2 SM |
271 | void ath9k_init_leds(struct ath9k_htc_priv *priv) |
272 | { | |
1e1f4ad2 SM |
273 | int ret; |
274 | ||
275 | if (AR_SREV_9287(priv->ah)) | |
276 | priv->ah->led_pin = ATH_LED_PIN_9287; | |
277 | else if (AR_SREV_9271(priv->ah)) | |
278 | priv->ah->led_pin = ATH_LED_PIN_9271; | |
279 | else if (AR_DEVID_7010(priv->ah)) | |
280 | priv->ah->led_pin = ATH_LED_PIN_7010; | |
281 | else | |
282 | priv->ah->led_pin = ATH_LED_PIN_DEF; | |
283 | ||
0c8a1e43 | 284 | if (!ath9k_htc_led_blink) |
3a939a67 HX |
285 | priv->led_cdev.default_trigger = |
286 | ieee80211_get_radio_led_name(priv->hw); | |
287 | ||
1e51acaa | 288 | ath9k_configure_leds(priv); |
1e1f4ad2 | 289 | |
d244f21e SM |
290 | snprintf(priv->led_name, sizeof(priv->led_name), |
291 | "ath9k_htc-%s", wiphy_name(priv->hw->wiphy)); | |
292 | priv->led_cdev.name = priv->led_name; | |
293 | priv->led_cdev.brightness_set = ath9k_led_brightness; | |
1e1f4ad2 | 294 | |
d244f21e SM |
295 | ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &priv->led_cdev); |
296 | if (ret < 0) | |
297 | return; | |
1e1f4ad2 | 298 | |
d244f21e SM |
299 | INIT_WORK(&priv->led_work, ath9k_led_work); |
300 | priv->led_registered = true; | |
301 | ||
302 | return; | |
1e1f4ad2 | 303 | } |
d244f21e | 304 | #endif |
1e1f4ad2 SM |
305 | |
306 | /*******************/ | |
307 | /* Rfkill */ | |
308 | /*******************/ | |
309 | ||
310 | static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv) | |
311 | { | |
90826313 MSS |
312 | bool is_blocked; |
313 | ||
314 | ath9k_htc_ps_wakeup(priv); | |
315 | is_blocked = ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) == | |
316 | priv->ah->rfkill_polarity; | |
317 | ath9k_htc_ps_restore(priv); | |
318 | ||
319 | return is_blocked; | |
1e1f4ad2 SM |
320 | } |
321 | ||
322 | void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw) | |
323 | { | |
324 | struct ath9k_htc_priv *priv = hw->priv; | |
325 | bool blocked = !!ath_is_rfkill_set(priv); | |
326 | ||
327 | wiphy_rfkill_set_hw_state(hw->wiphy, blocked); | |
328 | } | |
329 | ||
330 | void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv) | |
331 | { | |
332 | if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) | |
333 | wiphy_rfkill_start_polling(priv->hw->wiphy); | |
334 | } |