2 * Copyright (c) 2010-2011 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.
24 * Detects if there is any priority bt traffic
26 static void ath_detect_bt_priority(struct ath9k_htc_priv *priv)
28 struct ath_btcoex *btcoex = &priv->btcoex;
29 struct ath_hw *ah = priv->ah;
31 if (ath9k_hw_gpio_get(ah, ah->btcoex_hw.btpriority_gpio))
32 btcoex->bt_priority_cnt++;
34 if (time_after(jiffies, btcoex->bt_priority_time +
35 msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
36 priv->op_flags &= ~(OP_BT_PRIORITY_DETECTED | OP_BT_SCAN);
37 /* Detect if colocated bt started scanning */
38 if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
39 ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
40 "BT scan detected\n");
41 priv->op_flags |= (OP_BT_SCAN |
42 OP_BT_PRIORITY_DETECTED);
43 } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
44 ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
45 "BT priority traffic detected\n");
46 priv->op_flags |= OP_BT_PRIORITY_DETECTED;
49 btcoex->bt_priority_cnt = 0;
50 btcoex->bt_priority_time = jiffies;
55 * This is the master bt coex work which runs for every
56 * 45ms, bt traffic will be given priority during 55% of this
57 * period while wlan gets remaining 45%
59 static void ath_btcoex_period_work(struct work_struct *work)
61 struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
62 coex_period_work.work);
63 struct ath_btcoex *btcoex = &priv->btcoex;
64 struct ath_common *common = ath9k_hw_common(priv->ah);
69 ath_detect_bt_priority(priv);
71 is_btscan = !!(priv->op_flags & OP_BT_SCAN);
73 ret = ath9k_htc_update_cap_target(priv,
74 !!(priv->op_flags & OP_BT_PRIORITY_DETECTED));
76 ath_err(common, "Unable to set BTCOEX parameters\n");
80 ath9k_hw_btcoex_bt_stomp(priv->ah, is_btscan ? ATH_BTCOEX_STOMP_ALL :
81 btcoex->bt_stomp_type);
83 ath9k_hw_btcoex_enable(priv->ah);
84 timer_period = is_btscan ? btcoex->btscan_no_stomp :
85 btcoex->btcoex_no_stomp;
86 ieee80211_queue_delayed_work(priv->hw, &priv->duty_cycle_work,
87 msecs_to_jiffies(timer_period));
88 ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work,
89 msecs_to_jiffies(btcoex->btcoex_period));
93 * Work to time slice between wlan and bt traffic and
94 * configure weight registers
96 static void ath_btcoex_duty_cycle_work(struct work_struct *work)
98 struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
99 duty_cycle_work.work);
100 struct ath_hw *ah = priv->ah;
101 struct ath_btcoex *btcoex = &priv->btcoex;
102 struct ath_common *common = ath9k_hw_common(ah);
103 bool is_btscan = priv->op_flags & OP_BT_SCAN;
105 ath_dbg(common, ATH_DBG_BTCOEX,
106 "time slice work for bt and wlan\n");
108 if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || is_btscan)
109 ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
110 else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
111 ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
112 ath9k_hw_btcoex_enable(priv->ah);
115 void ath_htc_init_btcoex_work(struct ath9k_htc_priv *priv)
117 struct ath_btcoex *btcoex = &priv->btcoex;
119 btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD;
120 btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
121 btcoex->btcoex_period / 100;
122 btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
123 btcoex->btcoex_period / 100;
124 INIT_DELAYED_WORK(&priv->coex_period_work, ath_btcoex_period_work);
125 INIT_DELAYED_WORK(&priv->duty_cycle_work, ath_btcoex_duty_cycle_work);
129 * (Re)start btcoex work
132 void ath_htc_resume_btcoex_work(struct ath9k_htc_priv *priv)
134 struct ath_btcoex *btcoex = &priv->btcoex;
135 struct ath_hw *ah = priv->ah;
137 ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX, "Starting btcoex work\n");
139 btcoex->bt_priority_cnt = 0;
140 btcoex->bt_priority_time = jiffies;
141 priv->op_flags &= ~(OP_BT_PRIORITY_DETECTED | OP_BT_SCAN);
142 ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, 0);
147 * Cancel btcoex and bt duty cycle work.
149 void ath_htc_cancel_btcoex_work(struct ath9k_htc_priv *priv)
151 cancel_delayed_work_sync(&priv->coex_period_work);
152 cancel_delayed_work_sync(&priv->duty_cycle_work);
159 #ifdef CONFIG_MAC80211_LEDS
160 void ath9k_led_work(struct work_struct *work)
162 struct ath9k_htc_priv *priv = container_of(work,
163 struct ath9k_htc_priv,
166 ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
167 (priv->brightness == LED_OFF));
170 static void ath9k_led_brightness(struct led_classdev *led_cdev,
171 enum led_brightness brightness)
173 struct ath9k_htc_priv *priv = container_of(led_cdev,
174 struct ath9k_htc_priv,
177 /* Not locked, but it's just a tiny green light..*/
178 priv->brightness = brightness;
179 ieee80211_queue_work(priv->hw, &priv->led_work);
182 void ath9k_deinit_leds(struct ath9k_htc_priv *priv)
184 if (!priv->led_registered)
187 ath9k_led_brightness(&priv->led_cdev, LED_OFF);
188 led_classdev_unregister(&priv->led_cdev);
189 cancel_work_sync(&priv->led_work);
192 void ath9k_init_leds(struct ath9k_htc_priv *priv)
196 if (AR_SREV_9287(priv->ah))
197 priv->ah->led_pin = ATH_LED_PIN_9287;
198 else if (AR_SREV_9271(priv->ah))
199 priv->ah->led_pin = ATH_LED_PIN_9271;
200 else if (AR_DEVID_7010(priv->ah))
201 priv->ah->led_pin = ATH_LED_PIN_7010;
203 priv->ah->led_pin = ATH_LED_PIN_DEF;
205 /* Configure gpio 1 for output */
206 ath9k_hw_cfg_output(priv->ah, priv->ah->led_pin,
207 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
208 /* LED off, active low */
209 ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 1);
211 snprintf(priv->led_name, sizeof(priv->led_name),
212 "ath9k_htc-%s", wiphy_name(priv->hw->wiphy));
213 priv->led_cdev.name = priv->led_name;
214 priv->led_cdev.brightness_set = ath9k_led_brightness;
216 ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &priv->led_cdev);
220 INIT_WORK(&priv->led_work, ath9k_led_work);
221 priv->led_registered = true;
227 /*******************/
229 /*******************/
231 static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv)
235 ath9k_htc_ps_wakeup(priv);
236 is_blocked = ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) ==
237 priv->ah->rfkill_polarity;
238 ath9k_htc_ps_restore(priv);
243 void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw)
245 struct ath9k_htc_priv *priv = hw->priv;
246 bool blocked = !!ath_is_rfkill_set(priv);
248 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
251 void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv)
253 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
254 wiphy_rfkill_start_polling(priv->hw->wiphy);
257 void ath9k_htc_radio_enable(struct ieee80211_hw *hw)
259 struct ath9k_htc_priv *priv = hw->priv;
260 struct ath_hw *ah = priv->ah;
261 struct ath_common *common = ath9k_hw_common(ah);
266 ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
269 ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
272 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
273 ret, ah->curchan->channel);
276 ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
280 WMI_CMD(WMI_START_RECV_CMDID);
281 ath9k_host_rx_init(priv);
284 htc_start(priv->htc);
285 spin_lock_bh(&priv->tx.tx_lock);
286 priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
287 spin_unlock_bh(&priv->tx.tx_lock);
288 ieee80211_wake_queues(hw);
290 WMI_CMD(WMI_ENABLE_INTR_CMDID);
293 ath9k_hw_cfg_output(ah, ah->led_pin,
294 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
295 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
298 void ath9k_htc_radio_disable(struct ieee80211_hw *hw)
300 struct ath9k_htc_priv *priv = hw->priv;
301 struct ath_hw *ah = priv->ah;
302 struct ath_common *common = ath9k_hw_common(ah);
306 ath9k_htc_ps_wakeup(priv);
309 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
310 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
312 WMI_CMD(WMI_DISABLE_INTR_CMDID);
315 ieee80211_stop_queues(hw);
316 ath9k_htc_tx_drain(priv);
317 WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
320 WMI_CMD(WMI_STOP_RECV_CMDID);
322 /* Clear the WMI event queue */
323 ath9k_wmi_event_drain(priv);
326 * The MIB counters have to be disabled here,
327 * since the target doesn't do it.
329 ath9k_hw_disable_mib_counters(ah);
332 ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
335 ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
338 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
339 ret, ah->curchan->channel);
342 /* Disable the PHY */
343 ath9k_hw_phy_disable(ah);
345 ath9k_htc_ps_restore(priv);
346 ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);