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334 lines
9.2 KiB
334 lines
9.2 KiB
/* |
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* Copyright (c) 2010-2011 Atheros Communications Inc. |
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* |
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* Permission to use, copy, modify, and/or distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include "htc.h" |
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/******************/ |
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/* BTCOEX */ |
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/******************/ |
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#define ATH_HTC_BTCOEX_PRODUCT_ID "wb193" |
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#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT |
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/* |
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* Detects if there is any priority bt traffic |
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*/ |
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static void ath_detect_bt_priority(struct ath9k_htc_priv *priv) |
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{ |
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struct ath_btcoex *btcoex = &priv->btcoex; |
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struct ath_hw *ah = priv->ah; |
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if (ath9k_hw_gpio_get(ah, ah->btcoex_hw.btpriority_gpio)) |
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btcoex->bt_priority_cnt++; |
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if (time_after(jiffies, btcoex->bt_priority_time + |
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msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) { |
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clear_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
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clear_bit(OP_BT_SCAN, &priv->op_flags); |
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/* Detect if colocated bt started scanning */ |
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if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) { |
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ath_dbg(ath9k_hw_common(ah), BTCOEX, |
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"BT scan detected\n"); |
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set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
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set_bit(OP_BT_SCAN, &priv->op_flags); |
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} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) { |
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ath_dbg(ath9k_hw_common(ah), BTCOEX, |
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"BT priority traffic detected\n"); |
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set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
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} |
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btcoex->bt_priority_cnt = 0; |
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btcoex->bt_priority_time = jiffies; |
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} |
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} |
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/* |
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* This is the master bt coex work which runs for every |
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* 45ms, bt traffic will be given priority during 55% of this |
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* period while wlan gets remaining 45% |
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*/ |
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static void ath_btcoex_period_work(struct work_struct *work) |
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{ |
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struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv, |
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coex_period_work.work); |
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struct ath_btcoex *btcoex = &priv->btcoex; |
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struct ath_common *common = ath9k_hw_common(priv->ah); |
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u32 timer_period; |
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int ret; |
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ath_detect_bt_priority(priv); |
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ret = ath9k_htc_update_cap_target(priv, |
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test_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags)); |
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if (ret) { |
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ath_err(common, "Unable to set BTCOEX parameters\n"); |
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return; |
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} |
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ath9k_hw_btcoex_bt_stomp(priv->ah, test_bit(OP_BT_SCAN, &priv->op_flags) ? |
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ATH_BTCOEX_STOMP_ALL : btcoex->bt_stomp_type); |
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ath9k_hw_btcoex_enable(priv->ah); |
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timer_period = test_bit(OP_BT_SCAN, &priv->op_flags) ? |
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btcoex->btscan_no_stomp : btcoex->btcoex_no_stomp; |
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ieee80211_queue_delayed_work(priv->hw, &priv->duty_cycle_work, |
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msecs_to_jiffies(timer_period)); |
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ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, |
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msecs_to_jiffies(btcoex->btcoex_period)); |
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} |
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/* |
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* Work to time slice between wlan and bt traffic and |
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* configure weight registers |
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*/ |
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static void ath_btcoex_duty_cycle_work(struct work_struct *work) |
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{ |
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struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv, |
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duty_cycle_work.work); |
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struct ath_hw *ah = priv->ah; |
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struct ath_btcoex *btcoex = &priv->btcoex; |
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struct ath_common *common = ath9k_hw_common(ah); |
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ath_dbg(common, BTCOEX, "time slice work for bt and wlan\n"); |
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if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || |
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test_bit(OP_BT_SCAN, &priv->op_flags)) |
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ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE); |
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else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL) |
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ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW); |
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ath9k_hw_btcoex_enable(priv->ah); |
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} |
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static void ath_htc_init_btcoex_work(struct ath9k_htc_priv *priv) |
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{ |
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struct ath_btcoex *btcoex = &priv->btcoex; |
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btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD; |
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btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) * |
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btcoex->btcoex_period / 100; |
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btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) * |
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btcoex->btcoex_period / 100; |
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INIT_DELAYED_WORK(&priv->coex_period_work, ath_btcoex_period_work); |
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INIT_DELAYED_WORK(&priv->duty_cycle_work, ath_btcoex_duty_cycle_work); |
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} |
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/* |
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* (Re)start btcoex work |
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*/ |
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static void ath_htc_resume_btcoex_work(struct ath9k_htc_priv *priv) |
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{ |
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struct ath_btcoex *btcoex = &priv->btcoex; |
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struct ath_hw *ah = priv->ah; |
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ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex work\n"); |
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btcoex->bt_priority_cnt = 0; |
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btcoex->bt_priority_time = jiffies; |
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clear_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
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clear_bit(OP_BT_SCAN, &priv->op_flags); |
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ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, 0); |
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} |
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/* |
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* Cancel btcoex and bt duty cycle work. |
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*/ |
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static void ath_htc_cancel_btcoex_work(struct ath9k_htc_priv *priv) |
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{ |
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cancel_delayed_work_sync(&priv->coex_period_work); |
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cancel_delayed_work_sync(&priv->duty_cycle_work); |
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} |
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void ath9k_htc_start_btcoex(struct ath9k_htc_priv *priv) |
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{ |
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struct ath_hw *ah = priv->ah; |
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if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) { |
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ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, |
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AR_STOMP_LOW_WLAN_WGHT, 0); |
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ath9k_hw_btcoex_enable(ah); |
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ath_htc_resume_btcoex_work(priv); |
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} |
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} |
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void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv) |
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{ |
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struct ath_hw *ah = priv->ah; |
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if (ah->btcoex_hw.enabled && |
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ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) { |
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if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) |
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ath_htc_cancel_btcoex_work(priv); |
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ath9k_hw_btcoex_disable(ah); |
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} |
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} |
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void ath9k_htc_init_btcoex(struct ath9k_htc_priv *priv, char *product) |
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{ |
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struct ath_hw *ah = priv->ah; |
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struct ath_common *common = ath9k_hw_common(ah); |
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int qnum; |
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/* |
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* Check if BTCOEX is globally disabled. |
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*/ |
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if (!common->btcoex_enabled) { |
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ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_NONE; |
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return; |
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} |
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if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) { |
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ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE; |
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} |
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switch (ath9k_hw_get_btcoex_scheme(priv->ah)) { |
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case ATH_BTCOEX_CFG_NONE: |
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break; |
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case ATH_BTCOEX_CFG_3WIRE: |
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priv->ah->btcoex_hw.btactive_gpio = 7; |
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priv->ah->btcoex_hw.btpriority_gpio = 6; |
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priv->ah->btcoex_hw.wlanactive_gpio = 8; |
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priv->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW; |
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ath9k_hw_btcoex_init_3wire(priv->ah); |
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ath_htc_init_btcoex_work(priv); |
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qnum = priv->hwq_map[IEEE80211_AC_BE]; |
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ath9k_hw_init_btcoex_hw(priv->ah, qnum); |
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break; |
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default: |
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WARN_ON(1); |
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break; |
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} |
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} |
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#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */ |
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/*******/ |
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/* LED */ |
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/*******/ |
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#ifdef CONFIG_MAC80211_LEDS |
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void ath9k_led_work(struct work_struct *work) |
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{ |
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struct ath9k_htc_priv *priv = container_of(work, |
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struct ath9k_htc_priv, |
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led_work); |
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ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, |
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(priv->brightness == LED_OFF)); |
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} |
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static void ath9k_led_brightness(struct led_classdev *led_cdev, |
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enum led_brightness brightness) |
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{ |
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struct ath9k_htc_priv *priv = container_of(led_cdev, |
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struct ath9k_htc_priv, |
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led_cdev); |
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/* Not locked, but it's just a tiny green light..*/ |
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priv->brightness = brightness; |
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ieee80211_queue_work(priv->hw, &priv->led_work); |
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} |
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void ath9k_deinit_leds(struct ath9k_htc_priv *priv) |
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{ |
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if (!priv->led_registered) |
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return; |
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ath9k_led_brightness(&priv->led_cdev, LED_OFF); |
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led_classdev_unregister(&priv->led_cdev); |
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cancel_work_sync(&priv->led_work); |
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ath9k_hw_gpio_free(priv->ah, priv->ah->led_pin); |
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} |
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void ath9k_configure_leds(struct ath9k_htc_priv *priv) |
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{ |
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/* Configure gpio 1 for output */ |
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ath9k_hw_gpio_request_out(priv->ah, priv->ah->led_pin, |
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"ath9k-led", |
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AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
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/* LED off, active low */ |
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ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 1); |
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} |
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void ath9k_init_leds(struct ath9k_htc_priv *priv) |
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{ |
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int ret; |
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if (AR_SREV_9287(priv->ah)) |
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priv->ah->led_pin = ATH_LED_PIN_9287; |
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else if (AR_SREV_9271(priv->ah)) |
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priv->ah->led_pin = ATH_LED_PIN_9271; |
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else if (AR_DEVID_7010(priv->ah)) |
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priv->ah->led_pin = ATH_LED_PIN_7010; |
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else |
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priv->ah->led_pin = ATH_LED_PIN_DEF; |
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if (!ath9k_htc_led_blink) |
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priv->led_cdev.default_trigger = |
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ieee80211_get_radio_led_name(priv->hw); |
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ath9k_configure_leds(priv); |
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snprintf(priv->led_name, sizeof(priv->led_name), |
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"ath9k_htc-%s", wiphy_name(priv->hw->wiphy)); |
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priv->led_cdev.name = priv->led_name; |
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priv->led_cdev.brightness_set = ath9k_led_brightness; |
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ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &priv->led_cdev); |
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if (ret < 0) |
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return; |
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INIT_WORK(&priv->led_work, ath9k_led_work); |
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priv->led_registered = true; |
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return; |
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} |
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#endif |
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/*******************/ |
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/* Rfkill */ |
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/*******************/ |
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static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv) |
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{ |
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bool is_blocked; |
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ath9k_htc_ps_wakeup(priv); |
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is_blocked = ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) == |
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priv->ah->rfkill_polarity; |
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ath9k_htc_ps_restore(priv); |
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return is_blocked; |
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} |
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void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw) |
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{ |
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struct ath9k_htc_priv *priv = hw->priv; |
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bool blocked = !!ath_is_rfkill_set(priv); |
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wiphy_rfkill_set_hw_state(hw->wiphy, blocked); |
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} |
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void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv) |
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{ |
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if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
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wiphy_rfkill_start_polling(priv->hw->wiphy); |
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}
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