| /* |
| * 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 */ |
| /******************/ |
| |
| #define ATH_HTC_BTCOEX_PRODUCT_ID "wb193" |
| |
| #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT |
| |
| /* |
| * 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))) { |
| clear_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
| clear_bit(OP_BT_SCAN, &priv->op_flags); |
| /* Detect if colocated bt started scanning */ |
| if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) { |
| ath_dbg(ath9k_hw_common(ah), BTCOEX, |
| "BT scan detected\n"); |
| set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
| set_bit(OP_BT_SCAN, &priv->op_flags); |
| } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) { |
| ath_dbg(ath9k_hw_common(ah), BTCOEX, |
| "BT priority traffic detected\n"); |
| set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
| } |
| |
| 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; |
| int ret; |
| |
| ath_detect_bt_priority(priv); |
| |
| ret = ath9k_htc_update_cap_target(priv, |
| test_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags)); |
| if (ret) { |
| ath_err(common, "Unable to set BTCOEX parameters\n"); |
| return; |
| } |
| |
| ath9k_hw_btcoex_bt_stomp(priv->ah, test_bit(OP_BT_SCAN, &priv->op_flags) ? |
| ATH_BTCOEX_STOMP_ALL : btcoex->bt_stomp_type); |
| |
| ath9k_hw_btcoex_enable(priv->ah); |
| timer_period = test_bit(OP_BT_SCAN, &priv->op_flags) ? |
| 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); |
| |
| ath_dbg(common, BTCOEX, "time slice work for bt and wlan\n"); |
| |
| if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || |
| test_bit(OP_BT_SCAN, &priv->op_flags)) |
| 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); |
| |
| ath9k_hw_btcoex_enable(priv->ah); |
| } |
| |
| static 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 |
| */ |
| |
| static 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), BTCOEX, "Starting btcoex work\n"); |
| |
| btcoex->bt_priority_cnt = 0; |
| btcoex->bt_priority_time = jiffies; |
| clear_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags); |
| clear_bit(OP_BT_SCAN, &priv->op_flags); |
| ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, 0); |
| } |
| |
| |
| /* |
| * Cancel btcoex and bt duty cycle work. |
| */ |
| static 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); |
| } |
| |
| void ath9k_htc_start_btcoex(struct ath9k_htc_priv *priv) |
| { |
| struct ath_hw *ah = priv->ah; |
| |
| if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) { |
| ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, |
| AR_STOMP_LOW_WLAN_WGHT, 0); |
| ath9k_hw_btcoex_enable(ah); |
| ath_htc_resume_btcoex_work(priv); |
| } |
| } |
| |
| void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv) |
| { |
| struct ath_hw *ah = priv->ah; |
| |
| if (ah->btcoex_hw.enabled && |
| ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) { |
| if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) |
| ath_htc_cancel_btcoex_work(priv); |
| ath9k_hw_btcoex_disable(ah); |
| } |
| } |
| |
| void ath9k_htc_init_btcoex(struct ath9k_htc_priv *priv, char *product) |
| { |
| struct ath_hw *ah = priv->ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| int qnum; |
| |
| /* |
| * Check if BTCOEX is globally disabled. |
| */ |
| if (!common->btcoex_enabled) { |
| ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_NONE; |
| return; |
| } |
| |
| if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) { |
| ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE; |
| } |
| |
| switch (ath9k_hw_get_btcoex_scheme(priv->ah)) { |
| case ATH_BTCOEX_CFG_NONE: |
| break; |
| case ATH_BTCOEX_CFG_3WIRE: |
| priv->ah->btcoex_hw.btactive_gpio = 7; |
| priv->ah->btcoex_hw.btpriority_gpio = 6; |
| priv->ah->btcoex_hw.wlanactive_gpio = 8; |
| priv->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW; |
| ath9k_hw_btcoex_init_3wire(priv->ah); |
| ath_htc_init_btcoex_work(priv); |
| qnum = priv->hwq_map[IEEE80211_AC_BE]; |
| ath9k_hw_init_btcoex_hw(priv->ah, qnum); |
| break; |
| default: |
| WARN_ON(1); |
| break; |
| } |
| } |
| |
| #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */ |
| |
| /*******/ |
| /* 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_configure_leds(struct ath9k_htc_priv *priv) |
| { |
| /* 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); |
| |
| } |
| |
| 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; |
| |
| if (!ath9k_htc_led_blink) |
| priv->led_cdev.default_trigger = |
| ieee80211_get_radio_led_name(priv->hw); |
| |
| ath9k_configure_leds(priv); |
| |
| 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) |
| { |
| bool is_blocked; |
| |
| ath9k_htc_ps_wakeup(priv); |
| is_blocked = ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) == |
| priv->ah->rfkill_polarity; |
| ath9k_htc_ps_restore(priv); |
| |
| return is_blocked; |
| } |
| |
| 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); |
| } |