| /* |
| * Copyright (c) 2010-2011 Atheros Communications Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include "htc.h" |
| |
| /******************/ |
| /* BTCOEX */ |
| /******************/ |
| |
| /* |
| * Detects if there is any priority bt traffic |
| */ |
| static void ath_detect_bt_priority(struct ath9k_htc_priv *priv) |
| { |
| struct ath_btcoex *btcoex = &priv->btcoex; |
| struct ath_hw *ah = priv->ah; |
| |
| if (ath9k_hw_gpio_get(ah, ah->btcoex_hw.btpriority_gpio)) |
| btcoex->bt_priority_cnt++; |
| |
| if (time_after(jiffies, btcoex->bt_priority_time + |
| msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) { |
| priv->op_flags &= ~(OP_BT_PRIORITY_DETECTED | OP_BT_SCAN); |
| /* Detect if colocated bt started scanning */ |
| if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) { |
| ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX, |
| "BT scan detected\n"); |
| priv->op_flags |= (OP_BT_SCAN | |
| OP_BT_PRIORITY_DETECTED); |
| } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) { |
| ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX, |
| "BT priority traffic detected\n"); |
| priv->op_flags |= OP_BT_PRIORITY_DETECTED; |
| } |
| |
| btcoex->bt_priority_cnt = 0; |
| btcoex->bt_priority_time = jiffies; |
| } |
| } |
| |
| /* |
| * This is the master bt coex work which runs for every |
| * 45ms, bt traffic will be given priority during 55% of this |
| * period while wlan gets remaining 45% |
| */ |
| static void ath_btcoex_period_work(struct work_struct *work) |
| { |
| struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv, |
| coex_period_work.work); |
| struct ath_btcoex *btcoex = &priv->btcoex; |
| struct ath_common *common = ath9k_hw_common(priv->ah); |
| u32 timer_period; |
| bool is_btscan; |
| int ret; |
| |
| ath_detect_bt_priority(priv); |
| |
| is_btscan = !!(priv->op_flags & OP_BT_SCAN); |
| |
| ret = ath9k_htc_update_cap_target(priv, |
| !!(priv->op_flags & OP_BT_PRIORITY_DETECTED)); |
| if (ret) { |
| ath_err(common, "Unable to set BTCOEX parameters\n"); |
| return; |
| } |
| |
| ath9k_hw_btcoex_bt_stomp(priv->ah, is_btscan ? ATH_BTCOEX_STOMP_ALL : |
| btcoex->bt_stomp_type); |
| |
| timer_period = is_btscan ? btcoex->btscan_no_stomp : |
| btcoex->btcoex_no_stomp; |
| ieee80211_queue_delayed_work(priv->hw, &priv->duty_cycle_work, |
| msecs_to_jiffies(timer_period)); |
| ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, |
| msecs_to_jiffies(btcoex->btcoex_period)); |
| } |
| |
| /* |
| * Work to time slice between wlan and bt traffic and |
| * configure weight registers |
| */ |
| static void ath_btcoex_duty_cycle_work(struct work_struct *work) |
| { |
| struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv, |
| duty_cycle_work.work); |
| struct ath_hw *ah = priv->ah; |
| struct ath_btcoex *btcoex = &priv->btcoex; |
| struct ath_common *common = ath9k_hw_common(ah); |
| bool is_btscan = priv->op_flags & OP_BT_SCAN; |
| |
| ath_dbg(common, ATH_DBG_BTCOEX, |
| "time slice work for bt and wlan\n"); |
| |
| if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || is_btscan) |
| ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE); |
| else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL) |
| ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW); |
| } |
| |
| void ath_htc_init_btcoex_work(struct ath9k_htc_priv *priv) |
| { |
| struct ath_btcoex *btcoex = &priv->btcoex; |
| |
| btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD; |
| btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) * |
| btcoex->btcoex_period / 100; |
| btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) * |
| btcoex->btcoex_period / 100; |
| INIT_DELAYED_WORK(&priv->coex_period_work, ath_btcoex_period_work); |
| INIT_DELAYED_WORK(&priv->duty_cycle_work, ath_btcoex_duty_cycle_work); |
| } |
| |
| /* |
| * (Re)start btcoex work |
| */ |
| |
| void ath_htc_resume_btcoex_work(struct ath9k_htc_priv *priv) |
| { |
| struct ath_btcoex *btcoex = &priv->btcoex; |
| struct ath_hw *ah = priv->ah; |
| |
| ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX, "Starting btcoex work\n"); |
| |
| btcoex->bt_priority_cnt = 0; |
| btcoex->bt_priority_time = jiffies; |
| priv->op_flags &= ~(OP_BT_PRIORITY_DETECTED | OP_BT_SCAN); |
| ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, 0); |
| } |
| |
| |
| /* |
| * Cancel btcoex and bt duty cycle work. |
| */ |
| void ath_htc_cancel_btcoex_work(struct ath9k_htc_priv *priv) |
| { |
| cancel_delayed_work_sync(&priv->coex_period_work); |
| cancel_delayed_work_sync(&priv->duty_cycle_work); |
| } |
| |
| /*******/ |
| /* LED */ |
| /*******/ |
| |
| #ifdef CONFIG_MAC80211_LEDS |
| void ath9k_led_work(struct work_struct *work) |
| { |
| struct ath9k_htc_priv *priv = container_of(work, |
| struct ath9k_htc_priv, |
| led_work); |
| |
| ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, |
| (priv->brightness == LED_OFF)); |
| } |
| |
| static void ath9k_led_brightness(struct led_classdev *led_cdev, |
| enum led_brightness brightness) |
| { |
| struct ath9k_htc_priv *priv = container_of(led_cdev, |
| struct ath9k_htc_priv, |
| led_cdev); |
| |
| /* Not locked, but it's just a tiny green light..*/ |
| priv->brightness = brightness; |
| ieee80211_queue_work(priv->hw, &priv->led_work); |
| } |
| |
| void ath9k_deinit_leds(struct ath9k_htc_priv *priv) |
| { |
| if (!priv->led_registered) |
| return; |
| |
| ath9k_led_brightness(&priv->led_cdev, LED_OFF); |
| led_classdev_unregister(&priv->led_cdev); |
| cancel_work_sync(&priv->led_work); |
| } |
| |
| void ath9k_init_leds(struct ath9k_htc_priv *priv) |
| { |
| int ret; |
| |
| if (AR_SREV_9287(priv->ah)) |
| priv->ah->led_pin = ATH_LED_PIN_9287; |
| else if (AR_SREV_9271(priv->ah)) |
| priv->ah->led_pin = ATH_LED_PIN_9271; |
| else if (AR_DEVID_7010(priv->ah)) |
| priv->ah->led_pin = ATH_LED_PIN_7010; |
| else |
| priv->ah->led_pin = ATH_LED_PIN_DEF; |
| |
| /* Configure gpio 1 for output */ |
| ath9k_hw_cfg_output(priv->ah, priv->ah->led_pin, |
| AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
| /* LED off, active low */ |
| ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 1); |
| |
| snprintf(priv->led_name, sizeof(priv->led_name), |
| "ath9k_htc-%s", wiphy_name(priv->hw->wiphy)); |
| priv->led_cdev.name = priv->led_name; |
| priv->led_cdev.brightness_set = ath9k_led_brightness; |
| |
| ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &priv->led_cdev); |
| if (ret < 0) |
| return; |
| |
| INIT_WORK(&priv->led_work, ath9k_led_work); |
| priv->led_registered = true; |
| |
| return; |
| } |
| #endif |
| |
| /*******************/ |
| /* Rfkill */ |
| /*******************/ |
| |
| static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv) |
| { |
| return ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) == |
| priv->ah->rfkill_polarity; |
| } |
| |
| void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw) |
| { |
| struct ath9k_htc_priv *priv = hw->priv; |
| bool blocked = !!ath_is_rfkill_set(priv); |
| |
| wiphy_rfkill_set_hw_state(hw->wiphy, blocked); |
| } |
| |
| void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv) |
| { |
| if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| wiphy_rfkill_start_polling(priv->hw->wiphy); |
| } |
| |
| void ath9k_htc_radio_enable(struct ieee80211_hw *hw) |
| { |
| struct ath9k_htc_priv *priv = hw->priv; |
| struct ath_hw *ah = priv->ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| int ret; |
| u8 cmd_rsp; |
| |
| if (!ah->curchan) |
| ah->curchan = ath9k_cmn_get_curchannel(hw, ah); |
| |
| /* Reset the HW */ |
| ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false); |
| if (ret) { |
| ath_err(common, |
| "Unable to reset hardware; reset status %d (freq %u MHz)\n", |
| ret, ah->curchan->channel); |
| } |
| |
| ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit, |
| &priv->curtxpow); |
| |
| /* Start RX */ |
| WMI_CMD(WMI_START_RECV_CMDID); |
| ath9k_host_rx_init(priv); |
| |
| /* Start TX */ |
| htc_start(priv->htc); |
| spin_lock_bh(&priv->tx.tx_lock); |
| priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP; |
| spin_unlock_bh(&priv->tx.tx_lock); |
| ieee80211_wake_queues(hw); |
| |
| WMI_CMD(WMI_ENABLE_INTR_CMDID); |
| |
| /* Enable LED */ |
| ath9k_hw_cfg_output(ah, ah->led_pin, |
| AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
| ath9k_hw_set_gpio(ah, ah->led_pin, 0); |
| } |
| |
| void ath9k_htc_radio_disable(struct ieee80211_hw *hw) |
| { |
| struct ath9k_htc_priv *priv = hw->priv; |
| struct ath_hw *ah = priv->ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| int ret; |
| u8 cmd_rsp; |
| |
| ath9k_htc_ps_wakeup(priv); |
| |
| /* Disable LED */ |
| ath9k_hw_set_gpio(ah, ah->led_pin, 1); |
| ath9k_hw_cfg_gpio_input(ah, ah->led_pin); |
| |
| WMI_CMD(WMI_DISABLE_INTR_CMDID); |
| |
| /* Stop TX */ |
| ieee80211_stop_queues(hw); |
| ath9k_htc_tx_drain(priv); |
| WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID); |
| |
| /* Stop RX */ |
| WMI_CMD(WMI_STOP_RECV_CMDID); |
| |
| /* Clear the WMI event queue */ |
| ath9k_wmi_event_drain(priv); |
| |
| /* |
| * The MIB counters have to be disabled here, |
| * since the target doesn't do it. |
| */ |
| ath9k_hw_disable_mib_counters(ah); |
| |
| if (!ah->curchan) |
| ah->curchan = ath9k_cmn_get_curchannel(hw, ah); |
| |
| /* Reset the HW */ |
| ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false); |
| if (ret) { |
| ath_err(common, |
| "Unable to reset hardware; reset status %d (freq %u MHz)\n", |
| ret, ah->curchan->channel); |
| } |
| |
| /* Disable the PHY */ |
| ath9k_hw_phy_disable(ah); |
| |
| ath9k_htc_ps_restore(priv); |
| ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP); |
| } |