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519 lines
14 KiB
519 lines
14 KiB
/* |
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* Copyright (c) 2008-2011 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 "ath9k.h" |
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/********************************/ |
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/* LED functions */ |
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/********************************/ |
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#ifdef CONFIG_MAC80211_LEDS |
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static void ath_fill_led_pin(struct ath_softc *sc) |
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{ |
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struct ath_hw *ah = sc->sc_ah; |
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/* Set default led pin if invalid */ |
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if (ah->led_pin < 0) { |
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if (AR_SREV_9287(ah)) |
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ah->led_pin = ATH_LED_PIN_9287; |
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else if (AR_SREV_9485(ah)) |
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ah->led_pin = ATH_LED_PIN_9485; |
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else if (AR_SREV_9300(ah)) |
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ah->led_pin = ATH_LED_PIN_9300; |
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else if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) |
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ah->led_pin = ATH_LED_PIN_9462; |
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else |
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ah->led_pin = ATH_LED_PIN_DEF; |
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} |
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/* Configure gpio for output */ |
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ath9k_hw_gpio_request_out(ah, ah->led_pin, "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(ah, ah->led_pin, ah->config.led_active_high ? 0 : 1); |
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} |
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static void ath_led_brightness(struct led_classdev *led_cdev, |
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enum led_brightness brightness) |
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{ |
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struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev); |
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u32 val = (brightness == LED_OFF); |
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if (sc->sc_ah->config.led_active_high) |
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val = !val; |
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ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val); |
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} |
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void ath_deinit_leds(struct ath_softc *sc) |
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{ |
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if (!sc->led_registered) |
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return; |
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ath_led_brightness(&sc->led_cdev, LED_OFF); |
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led_classdev_unregister(&sc->led_cdev); |
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ath9k_hw_gpio_free(sc->sc_ah, sc->sc_ah->led_pin); |
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} |
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void ath_init_leds(struct ath_softc *sc) |
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{ |
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int ret; |
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if (AR_SREV_9100(sc->sc_ah)) |
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return; |
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ath_fill_led_pin(sc); |
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if (!ath9k_led_blink) |
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sc->led_cdev.default_trigger = |
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ieee80211_get_radio_led_name(sc->hw); |
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snprintf(sc->led_name, sizeof(sc->led_name), |
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"ath9k-%s", wiphy_name(sc->hw->wiphy)); |
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sc->led_cdev.name = sc->led_name; |
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sc->led_cdev.brightness_set = ath_led_brightness; |
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ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev); |
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if (ret < 0) |
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return; |
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sc->led_registered = true; |
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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 ath_softc *sc) |
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{ |
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struct ath_hw *ah = sc->sc_ah; |
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bool is_blocked; |
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ath9k_ps_wakeup(sc); |
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is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) == |
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ah->rfkill_polarity; |
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ath9k_ps_restore(sc); |
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return is_blocked; |
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} |
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void ath9k_rfkill_poll_state(struct ieee80211_hw *hw) |
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{ |
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struct ath_softc *sc = hw->priv; |
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bool blocked = !!ath_is_rfkill_set(sc); |
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wiphy_rfkill_set_hw_state(hw->wiphy, blocked); |
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} |
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void ath_start_rfkill_poll(struct ath_softc *sc) |
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{ |
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struct ath_hw *ah = sc->sc_ah; |
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if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
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wiphy_rfkill_start_polling(sc->hw->wiphy); |
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} |
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#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT |
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/******************/ |
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/* BTCOEX */ |
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/******************/ |
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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 ath_softc *sc) |
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{ |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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struct ath_hw *ah = sc->sc_ah; |
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if (ath9k_hw_gpio_get(sc->sc_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(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags); |
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clear_bit(BT_OP_SCAN, &btcoex->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(sc->sc_ah), BTCOEX, |
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"BT scan detected\n"); |
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set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags); |
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set_bit(BT_OP_SCAN, &btcoex->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(sc->sc_ah), BTCOEX, |
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"BT priority traffic detected\n"); |
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set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->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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static void ath_mci_ftp_adjust(struct ath_softc *sc) |
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{ |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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struct ath_mci_profile *mci = &btcoex->mci; |
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struct ath_hw *ah = sc->sc_ah; |
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if (btcoex->bt_wait_time > ATH_BTCOEX_RX_WAIT_TIME) { |
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if (ar9003_mci_state(ah, MCI_STATE_NEED_FTP_STOMP) && |
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(mci->num_pan || mci->num_other_acl)) |
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ah->btcoex_hw.mci.stomp_ftp = |
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(sc->rx.num_pkts < ATH_BTCOEX_STOMP_FTP_THRESH); |
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else |
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ah->btcoex_hw.mci.stomp_ftp = false; |
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btcoex->bt_wait_time = 0; |
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sc->rx.num_pkts = 0; |
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} |
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} |
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/* |
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* This is the master bt coex timer 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_timer(struct timer_list *t) |
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{ |
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struct ath_softc *sc = from_timer(sc, t, btcoex.period_timer); |
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struct ath_hw *ah = sc->sc_ah; |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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enum ath_stomp_type stomp_type; |
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u32 timer_period; |
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unsigned long flags; |
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spin_lock_irqsave(&sc->sc_pm_lock, flags); |
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if (sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP) { |
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btcoex->bt_wait_time += btcoex->btcoex_period; |
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spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
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goto skip_hw_wakeup; |
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} |
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spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
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ath9k_ps_wakeup(sc); |
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spin_lock_bh(&btcoex->btcoex_lock); |
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if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) { |
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ath9k_mci_update_rssi(sc); |
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ath_mci_ftp_adjust(sc); |
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} |
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if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) |
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ath_detect_bt_priority(sc); |
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stomp_type = btcoex->bt_stomp_type; |
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timer_period = btcoex->btcoex_no_stomp; |
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if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) { |
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if (test_bit(BT_OP_SCAN, &btcoex->op_flags)) { |
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stomp_type = ATH_BTCOEX_STOMP_ALL; |
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timer_period = btcoex->btscan_no_stomp; |
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} |
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} else if (btcoex->stomp_audio >= 5) { |
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stomp_type = ATH_BTCOEX_STOMP_AUDIO; |
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btcoex->stomp_audio = 0; |
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} |
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ath9k_hw_btcoex_bt_stomp(ah, stomp_type); |
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ath9k_hw_btcoex_enable(ah); |
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spin_unlock_bh(&btcoex->btcoex_lock); |
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if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) |
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mod_timer(&btcoex->no_stomp_timer, |
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jiffies + msecs_to_jiffies(timer_period)); |
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ath9k_ps_restore(sc); |
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skip_hw_wakeup: |
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mod_timer(&btcoex->period_timer, |
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jiffies + msecs_to_jiffies(btcoex->btcoex_period)); |
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} |
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/* |
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* Generic tsf based hw timer which configures weight |
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* registers to time slice between wlan and bt traffic |
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*/ |
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static void ath_btcoex_no_stomp_timer(struct timer_list *t) |
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{ |
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struct ath_softc *sc = from_timer(sc, t, btcoex.no_stomp_timer); |
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struct ath_hw *ah = sc->sc_ah; |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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ath9k_ps_wakeup(sc); |
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spin_lock_bh(&btcoex->btcoex_lock); |
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if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || |
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(!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && |
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test_bit(BT_OP_SCAN, &btcoex->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(ah); |
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spin_unlock_bh(&btcoex->btcoex_lock); |
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ath9k_ps_restore(sc); |
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} |
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static void ath_init_btcoex_timer(struct ath_softc *sc) |
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{ |
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struct ath_btcoex *btcoex = &sc->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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btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW; |
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timer_setup(&btcoex->period_timer, ath_btcoex_period_timer, 0); |
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timer_setup(&btcoex->no_stomp_timer, ath_btcoex_no_stomp_timer, 0); |
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spin_lock_init(&btcoex->btcoex_lock); |
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} |
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/* |
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* (Re)start btcoex timers |
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*/ |
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void ath9k_btcoex_timer_resume(struct ath_softc *sc) |
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{ |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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struct ath_hw *ah = sc->sc_ah; |
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if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_3WIRE && |
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ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI) |
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return; |
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ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex timers\n"); |
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/* make sure duty cycle timer is also stopped when resuming */ |
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del_timer_sync(&btcoex->no_stomp_timer); |
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btcoex->bt_priority_cnt = 0; |
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btcoex->bt_priority_time = jiffies; |
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clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags); |
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clear_bit(BT_OP_SCAN, &btcoex->op_flags); |
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mod_timer(&btcoex->period_timer, jiffies); |
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} |
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/* |
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* Pause btcoex timer and bt duty cycle timer |
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*/ |
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void ath9k_btcoex_timer_pause(struct ath_softc *sc) |
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{ |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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struct ath_hw *ah = sc->sc_ah; |
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if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_3WIRE && |
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ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI) |
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return; |
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ath_dbg(ath9k_hw_common(ah), BTCOEX, "Stopping btcoex timers\n"); |
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del_timer_sync(&btcoex->period_timer); |
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del_timer_sync(&btcoex->no_stomp_timer); |
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} |
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void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc) |
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{ |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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del_timer_sync(&btcoex->no_stomp_timer); |
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} |
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u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen) |
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{ |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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struct ath_mci_profile *mci = &sc->btcoex.mci; |
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u16 aggr_limit = 0; |
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if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit) |
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aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4; |
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else if (test_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags)) |
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aggr_limit = min((max_4ms_framelen * 3) / 8, |
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(u32)ATH_AMPDU_LIMIT_MAX); |
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return aggr_limit; |
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} |
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void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status) |
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{ |
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if (status & ATH9K_INT_MCI) |
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ath_mci_intr(sc); |
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} |
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void ath9k_start_btcoex(struct ath_softc *sc) |
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{ |
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struct ath_hw *ah = sc->sc_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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return; |
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if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) |
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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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else |
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ath9k_hw_btcoex_set_weight(ah, 0, 0, |
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ATH_BTCOEX_STOMP_NONE); |
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ath9k_hw_btcoex_enable(ah); |
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ath9k_btcoex_timer_resume(sc); |
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} |
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void ath9k_stop_btcoex(struct ath_softc *sc) |
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{ |
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struct ath_hw *ah = sc->sc_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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return; |
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ath9k_btcoex_timer_pause(sc); |
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ath9k_hw_btcoex_disable(ah); |
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if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) |
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ath_mci_flush_profile(&sc->btcoex.mci); |
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} |
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void ath9k_deinit_btcoex(struct ath_softc *sc) |
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{ |
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struct ath_hw *ah = sc->sc_ah; |
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if (ath9k_hw_mci_is_enabled(ah)) |
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ath_mci_cleanup(sc); |
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else { |
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enum ath_btcoex_scheme scheme = ath9k_hw_get_btcoex_scheme(ah); |
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if (scheme == ATH_BTCOEX_CFG_2WIRE || |
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scheme == ATH_BTCOEX_CFG_3WIRE) |
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ath9k_hw_btcoex_deinit(sc->sc_ah); |
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} |
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} |
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int ath9k_init_btcoex(struct ath_softc *sc) |
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{ |
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struct ath_txq *txq; |
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struct ath_hw *ah = sc->sc_ah; |
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int r; |
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ath9k_hw_btcoex_init_scheme(ah); |
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switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) { |
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case ATH_BTCOEX_CFG_NONE: |
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break; |
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case ATH_BTCOEX_CFG_2WIRE: |
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ath9k_hw_btcoex_init_2wire(sc->sc_ah); |
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break; |
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case ATH_BTCOEX_CFG_3WIRE: |
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ath9k_hw_btcoex_init_3wire(sc->sc_ah); |
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ath_init_btcoex_timer(sc); |
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txq = sc->tx.txq_map[IEEE80211_AC_BE]; |
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ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum); |
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break; |
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case ATH_BTCOEX_CFG_MCI: |
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ath_init_btcoex_timer(sc); |
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|
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sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE; |
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INIT_LIST_HEAD(&sc->btcoex.mci.info); |
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ath9k_hw_btcoex_init_mci(ah); |
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|
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r = ath_mci_setup(sc); |
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if (r) |
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return r; |
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|
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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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return 0; |
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} |
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static int ath9k_dump_mci_btcoex(struct ath_softc *sc, u8 *buf, u32 size) |
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{ |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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struct ath_mci_profile *mci = &btcoex->mci; |
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struct ath_hw *ah = sc->sc_ah; |
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struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; |
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u32 len = 0; |
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int i; |
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|
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ATH_DUMP_BTCOEX("Total BT profiles", NUM_PROF(mci)); |
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ATH_DUMP_BTCOEX("MGMT", mci->num_mgmt); |
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ATH_DUMP_BTCOEX("SCO", mci->num_sco); |
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ATH_DUMP_BTCOEX("A2DP", mci->num_a2dp); |
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ATH_DUMP_BTCOEX("HID", mci->num_hid); |
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ATH_DUMP_BTCOEX("PAN", mci->num_pan); |
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ATH_DUMP_BTCOEX("ACL", mci->num_other_acl); |
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ATH_DUMP_BTCOEX("BDR", mci->num_bdr); |
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ATH_DUMP_BTCOEX("Aggr. Limit", mci->aggr_limit); |
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ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type); |
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ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period); |
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ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle); |
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ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time); |
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ATH_DUMP_BTCOEX("Concurrent Tx", btcoex_hw->mci.concur_tx); |
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ATH_DUMP_BTCOEX("Concurrent RSSI cnt", btcoex->rssi_count); |
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|
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len += scnprintf(buf + len, size - len, "BT Weights: "); |
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for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++) |
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len += scnprintf(buf + len, size - len, "%08x ", |
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btcoex_hw->bt_weight[i]); |
|
len += scnprintf(buf + len, size - len, "\n"); |
|
len += scnprintf(buf + len, size - len, "WLAN Weights: "); |
|
for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++) |
|
len += scnprintf(buf + len, size - len, "%08x ", |
|
btcoex_hw->wlan_weight[i]); |
|
len += scnprintf(buf + len, size - len, "\n"); |
|
len += scnprintf(buf + len, size - len, "Tx Priorities: "); |
|
for (i = 0; i < ATH_BTCOEX_STOMP_MAX; i++) |
|
len += scnprintf(buf + len, size - len, "%08x ", |
|
btcoex_hw->tx_prio[i]); |
|
|
|
len += scnprintf(buf + len, size - len, "\n"); |
|
|
|
return len; |
|
} |
|
|
|
static int ath9k_dump_legacy_btcoex(struct ath_softc *sc, u8 *buf, u32 size) |
|
{ |
|
|
|
struct ath_btcoex *btcoex = &sc->btcoex; |
|
u32 len = 0; |
|
|
|
ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type); |
|
ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period); |
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ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle); |
|
ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time); |
|
|
|
return len; |
|
} |
|
|
|
int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size) |
|
{ |
|
if (ath9k_hw_mci_is_enabled(sc->sc_ah)) |
|
return ath9k_dump_mci_btcoex(sc, buf, size); |
|
else |
|
return ath9k_dump_legacy_btcoex(sc, buf, size); |
|
} |
|
|
|
#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
|
|
|