drivers/net/wireless/ath/ath9k/gpio.c - kernel/msm-4.19 - Gitiles

 /*
  * Copyright (c) 2008-2011 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 "ath9k.h"

 /********************************/
 /*	 LED functions		*/
 /********************************/

 #ifdef CONFIG_MAC80211_LEDS
 static void ath_led_brightness(struct led_classdev *led_cdev,
 			       enum led_brightness brightness)
 {
 	struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
 	u32 val = (brightness == LED_OFF);

 	if (sc->sc_ah->config.led_active_high)
 		val = !val;

 	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val);
 }

 void ath_deinit_leds(struct ath_softc *sc)
 {
 	if (!sc->led_registered)
 		return;

 	ath_led_brightness(&sc->led_cdev, LED_OFF);
 	led_classdev_unregister(&sc->led_cdev);
 }

 void ath_init_leds(struct ath_softc *sc)
 {
 	int ret;

 	if (AR_SREV_9100(sc->sc_ah))
 		return;

 	if (!led_blink)
 		sc->led_cdev.default_trigger =
 			ieee80211_get_radio_led_name(sc->hw);

 	snprintf(sc->led_name, sizeof(sc->led_name),
 		"ath9k-%s", wiphy_name(sc->hw->wiphy));
 	sc->led_cdev.name = sc->led_name;
 	sc->led_cdev.brightness_set = ath_led_brightness;

 	ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
 	if (ret < 0)
 		return;

 	sc->led_registered = true;
 }

 void ath_fill_led_pin(struct ath_softc *sc)
 {
 	struct ath_hw *ah = sc->sc_ah;

 	if (AR_SREV_9100(ah) || (ah->led_pin >= 0))
 		return;

 	if (AR_SREV_9287(ah))
 		ah->led_pin = ATH_LED_PIN_9287;
 	else if (AR_SREV_9485(sc->sc_ah))
 		ah->led_pin = ATH_LED_PIN_9485;
 	else if (AR_SREV_9300(sc->sc_ah))
 		ah->led_pin = ATH_LED_PIN_9300;
 	else if (AR_SREV_9462(sc->sc_ah) || AR_SREV_9565(sc->sc_ah))
 		ah->led_pin = ATH_LED_PIN_9462;
 	else
 		ah->led_pin = ATH_LED_PIN_DEF;

 	/* Configure gpio 1 for output */
 	ath9k_hw_cfg_output(ah, ah->led_pin, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);

 	/* LED off, active low */
 	ath9k_hw_set_gpio(ah, ah->led_pin, (ah->config.led_active_high) ? 0 : 1);
 }
 #endif

 /*******************/
 /*	Rfkill	   */
 /*******************/

 static bool ath_is_rfkill_set(struct ath_softc *sc)
 {
 	struct ath_hw *ah = sc->sc_ah;
 	bool is_blocked;

 	ath9k_ps_wakeup(sc);
 	is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
 				  ah->rfkill_polarity;
 	ath9k_ps_restore(sc);

 	return is_blocked;
 }

 void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
 {
 	struct ath_softc *sc = hw->priv;
 	bool blocked = !!ath_is_rfkill_set(sc);

 	wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
 }

 void ath_start_rfkill_poll(struct ath_softc *sc)
 {
 	struct ath_hw *ah = sc->sc_ah;

 	if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 		wiphy_rfkill_start_polling(sc->hw->wiphy);
 }

 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT

 /******************/
 /*     BTCOEX     */
 /******************/

 /*
  * Detects if there is any priority bt traffic
  */
 static void ath_detect_bt_priority(struct ath_softc *sc)
 {
 	struct ath_btcoex *btcoex = &sc->btcoex;
 	struct ath_hw *ah = sc->sc_ah;

 	if (ath9k_hw_gpio_get(sc->sc_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(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
 		clear_bit(BT_OP_SCAN, &btcoex->op_flags);
 		/* Detect if colocated bt started scanning */
 		if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
 			ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
 				"BT scan detected\n");
 			set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
 			set_bit(BT_OP_SCAN, &btcoex->op_flags);
 		} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
 			ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
 				"BT priority traffic detected\n");
 			set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
 		}

 		btcoex->bt_priority_cnt = 0;
 		btcoex->bt_priority_time = jiffies;
 	}
 }

 static void ath_mci_ftp_adjust(struct ath_softc *sc)
 {
 	struct ath_btcoex *btcoex = &sc->btcoex;
 	struct ath_mci_profile *mci = &btcoex->mci;
 	struct ath_hw *ah = sc->sc_ah;

 	if (btcoex->bt_wait_time > ATH_BTCOEX_RX_WAIT_TIME) {
 		if (ar9003_mci_state(ah, MCI_STATE_NEED_FTP_STOMP) &&
 		    (mci->num_pan || mci->num_other_acl))
 			ah->btcoex_hw.mci.stomp_ftp =
 				(sc->rx.num_pkts < ATH_BTCOEX_STOMP_FTP_THRESH);
 		else
 			ah->btcoex_hw.mci.stomp_ftp = false;
 		btcoex->bt_wait_time = 0;
 		sc->rx.num_pkts = 0;
 	}
 }

 /*
  * This is the master bt coex timer 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_timer(unsigned long data)
 {
 	struct ath_softc *sc = (struct ath_softc *) data;
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_btcoex *btcoex = &sc->btcoex;
 	enum ath_stomp_type stomp_type;
 	u32 timer_period;
 	unsigned long flags;

 	spin_lock_irqsave(&sc->sc_pm_lock, flags);
 	if (sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP) {
 		btcoex->bt_wait_time += btcoex->btcoex_period;
 		spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
 		goto skip_hw_wakeup;
 	}
 	spin_unlock_irqrestore(&sc->sc_pm_lock, flags);

 	ath9k_mci_update_rssi(sc);

 	ath9k_ps_wakeup(sc);

 	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
 		ath_detect_bt_priority(sc);

 	if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
 		ath_mci_ftp_adjust(sc);

 	spin_lock_bh(&btcoex->btcoex_lock);

 	stomp_type = btcoex->bt_stomp_type;
 	timer_period = btcoex->btcoex_no_stomp;

 	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) {
 		if (test_bit(BT_OP_SCAN, &btcoex->op_flags)) {
 			stomp_type = ATH_BTCOEX_STOMP_ALL;
 			timer_period = btcoex->btscan_no_stomp;
 		}
 	} else if (btcoex->stomp_audio >= 5) {
 		stomp_type = ATH_BTCOEX_STOMP_AUDIO;
 		btcoex->stomp_audio = 0;
 	}

 	ath9k_hw_btcoex_bt_stomp(ah, stomp_type);
 	ath9k_hw_btcoex_enable(ah);

 	spin_unlock_bh(&btcoex->btcoex_lock);

 	if (btcoex->btcoex_period != btcoex->btcoex_no_stomp)
 		mod_timer(&btcoex->no_stomp_timer,
 			 jiffies + msecs_to_jiffies(timer_period));

 	ath9k_ps_restore(sc);

 skip_hw_wakeup:
 	mod_timer(&btcoex->period_timer,
 		  jiffies + msecs_to_jiffies(btcoex->btcoex_period));
 }

 /*
  * Generic tsf based hw timer which configures weight
  * registers to time slice between wlan and bt traffic
  */
 static void ath_btcoex_no_stomp_timer(unsigned long arg)
 {
 	struct ath_softc *sc = (struct ath_softc *)arg;
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_btcoex *btcoex = &sc->btcoex;
 	struct ath_common *common = ath9k_hw_common(ah);

 	ath_dbg(common, BTCOEX, "no stomp timer running\n");

 	ath9k_ps_wakeup(sc);
 	spin_lock_bh(&btcoex->btcoex_lock);

 	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW ||
 	    (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI) &&
 	     test_bit(BT_OP_SCAN, &btcoex->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(ah);
 	spin_unlock_bh(&btcoex->btcoex_lock);
 	ath9k_ps_restore(sc);
 }

 static int ath_init_btcoex_timer(struct ath_softc *sc)
 {
 	struct ath_btcoex *btcoex = &sc->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;

 	setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
 			(unsigned long) sc);
 	setup_timer(&btcoex->no_stomp_timer, ath_btcoex_no_stomp_timer,
 			(unsigned long) sc);

 	spin_lock_init(&btcoex->btcoex_lock);

 	return 0;
 }

 /*
  * (Re)start btcoex timers
  */
 void ath9k_btcoex_timer_resume(struct ath_softc *sc)
 {
 	struct ath_btcoex *btcoex = &sc->btcoex;
 	struct ath_hw *ah = sc->sc_ah;

 	ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex timers\n");

 	/* make sure duty cycle timer is also stopped when resuming */
 	del_timer_sync(&btcoex->no_stomp_timer);

 	btcoex->bt_priority_cnt = 0;
 	btcoex->bt_priority_time = jiffies;
 	clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
 	clear_bit(BT_OP_SCAN, &btcoex->op_flags);

 	mod_timer(&btcoex->period_timer, jiffies);
 }


 /*
  * Pause btcoex timer and bt duty cycle timer
  */
 void ath9k_btcoex_timer_pause(struct ath_softc *sc)
 {
 	struct ath_btcoex *btcoex = &sc->btcoex;

 	del_timer_sync(&btcoex->period_timer);
 	del_timer_sync(&btcoex->no_stomp_timer);
 }

 void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc)
 {
 	struct ath_btcoex *btcoex = &sc->btcoex;

 	del_timer_sync(&btcoex->no_stomp_timer);
 }

 u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen)
 {
 	struct ath_btcoex *btcoex = &sc->btcoex;
 	struct ath_mci_profile *mci = &sc->btcoex.mci;
 	u16 aggr_limit = 0;

 	if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit)
 		aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4;
 	else if (test_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags))
 		aggr_limit = min((max_4ms_framelen * 3) / 8,
 				 (u32)ATH_AMPDU_LIMIT_MAX);

 	return aggr_limit;
 }

 void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status)
 {
 	if (status & ATH9K_INT_MCI)
 		ath_mci_intr(sc);
 }

 void ath9k_start_btcoex(struct ath_softc *sc)
 {
 	struct ath_hw *ah = sc->sc_ah;

 	if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
 	    !ah->btcoex_hw.enabled) {
 		if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
 			ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
 						   AR_STOMP_LOW_WLAN_WGHT, 0);
 		else
 			ath9k_hw_btcoex_set_weight(ah, 0, 0,
 						   ATH_BTCOEX_STOMP_NONE);
 		ath9k_hw_btcoex_enable(ah);

 		if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
 			ath9k_btcoex_timer_resume(sc);
 	}
 }

 void ath9k_stop_btcoex(struct ath_softc *sc)
 {
 	struct ath_hw *ah = sc->sc_ah;

 	if (ah->btcoex_hw.enabled &&
 	    ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
 		if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
 			ath9k_btcoex_timer_pause(sc);
 		ath9k_hw_btcoex_disable(ah);
 		if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
 			ath_mci_flush_profile(&sc->btcoex.mci);
 	}
 }

 void ath9k_deinit_btcoex(struct ath_softc *sc)
 {
 	struct ath_hw *ah = sc->sc_ah;

 	if (ath9k_hw_mci_is_enabled(ah))
 		ath_mci_cleanup(sc);
 }

 int ath9k_init_btcoex(struct ath_softc *sc)
 {
 	struct ath_txq *txq;
 	struct ath_hw *ah = sc->sc_ah;
 	int r;

 	ath9k_hw_btcoex_init_scheme(ah);

 	switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) {
 	case ATH_BTCOEX_CFG_NONE:
 		break;
 	case ATH_BTCOEX_CFG_2WIRE:
 		ath9k_hw_btcoex_init_2wire(sc->sc_ah);
 		break;
 	case ATH_BTCOEX_CFG_3WIRE:
 		ath9k_hw_btcoex_init_3wire(sc->sc_ah);
 		r = ath_init_btcoex_timer(sc);
 		if (r)
 			return -1;
 		txq = sc->tx.txq_map[IEEE80211_AC_BE];
 		ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
 		sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
 		if (ath9k_hw_mci_is_enabled(ah)) {
 			sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
 			INIT_LIST_HEAD(&sc->btcoex.mci.info);

 			r = ath_mci_setup(sc);
 			if (r)
 				return r;

 			ath9k_hw_btcoex_init_mci(ah);
 		}

 		break;
 	default:
 		WARN_ON(1);
 		break;
 	}

 	return 0;
 }

 static int ath9k_dump_mci_btcoex(struct ath_softc *sc, u8 *buf, u32 size)
 {
 	struct ath_btcoex *btcoex = &sc->btcoex;
 	struct ath_mci_profile *mci = &btcoex->mci;
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
 	u32 len = 0;
 	int i;

 	ATH_DUMP_BTCOEX("Total BT profiles", NUM_PROF(mci));
 	ATH_DUMP_BTCOEX("MGMT", mci->num_mgmt);
 	ATH_DUMP_BTCOEX("SCO", mci->num_sco);
 	ATH_DUMP_BTCOEX("A2DP", mci->num_a2dp);
 	ATH_DUMP_BTCOEX("HID", mci->num_hid);
 	ATH_DUMP_BTCOEX("PAN", mci->num_pan);
 	ATH_DUMP_BTCOEX("ACL", mci->num_other_acl);
 	ATH_DUMP_BTCOEX("BDR", mci->num_bdr);
 	ATH_DUMP_BTCOEX("Aggr. Limit", mci->aggr_limit);
 	ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type);
 	ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period);
 	ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle);
 	ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time);
 	ATH_DUMP_BTCOEX("Concurrent Tx", btcoex_hw->mci.concur_tx);
 	ATH_DUMP_BTCOEX("Concurrent RSSI cnt", btcoex->rssi_count);

 	len += scnprintf(buf + len, size - len, "BT Weights: ");
 	for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
 		len += scnprintf(buf + len, size - len, "%08x ",
 				 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);
 	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 */
	/*
	* Copyright (c) 2008-2011 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 "ath9k.h"

	/********************************/
	/* LED functions */
	/********************************/

	#ifdef CONFIG_MAC80211_LEDS
	static void ath_led_brightness(struct led_classdev *led_cdev,
	enum led_brightness brightness)
	{
	struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
	u32 val = (brightness == LED_OFF);

	if (sc->sc_ah->config.led_active_high)
	val = !val;

	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val);
	}

	void ath_deinit_leds(struct ath_softc *sc)
	{
	if (!sc->led_registered)
	return;

	ath_led_brightness(&sc->led_cdev, LED_OFF);
	led_classdev_unregister(&sc->led_cdev);
	}

	void ath_init_leds(struct ath_softc *sc)
	{
	int ret;

	if (AR_SREV_9100(sc->sc_ah))
	return;

	if (!led_blink)
	sc->led_cdev.default_trigger =
	ieee80211_get_radio_led_name(sc->hw);

	snprintf(sc->led_name, sizeof(sc->led_name),
	"ath9k-%s", wiphy_name(sc->hw->wiphy));
	sc->led_cdev.name = sc->led_name;
	sc->led_cdev.brightness_set = ath_led_brightness;

	ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
	if (ret < 0)
	return;

	sc->led_registered = true;
	}

	void ath_fill_led_pin(struct ath_softc *sc)
	{
	struct ath_hw *ah = sc->sc_ah;

	if (AR_SREV_9100(ah) \|\| (ah->led_pin >= 0))
	return;

	if (AR_SREV_9287(ah))
	ah->led_pin = ATH_LED_PIN_9287;
	else if (AR_SREV_9485(sc->sc_ah))
	ah->led_pin = ATH_LED_PIN_9485;
	else if (AR_SREV_9300(sc->sc_ah))
	ah->led_pin = ATH_LED_PIN_9300;
	else if (AR_SREV_9462(sc->sc_ah) \|\| AR_SREV_9565(sc->sc_ah))
	ah->led_pin = ATH_LED_PIN_9462;
	else
	ah->led_pin = ATH_LED_PIN_DEF;

	/* Configure gpio 1 for output */
	ath9k_hw_cfg_output(ah, ah->led_pin, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);

	/* LED off, active low */
	ath9k_hw_set_gpio(ah, ah->led_pin, (ah->config.led_active_high) ? 0 : 1);
	}
	#endif

	/*******************/
	/* Rfkill */
	/*******************/

	static bool ath_is_rfkill_set(struct ath_softc *sc)
	{
	struct ath_hw *ah = sc->sc_ah;
	bool is_blocked;

	ath9k_ps_wakeup(sc);
	is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
	ah->rfkill_polarity;
	ath9k_ps_restore(sc);

	return is_blocked;
	}

	void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
	{
	struct ath_softc *sc = hw->priv;
	bool blocked = !!ath_is_rfkill_set(sc);

	wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
	}

	void ath_start_rfkill_poll(struct ath_softc *sc)
	{
	struct ath_hw *ah = sc->sc_ah;

	if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
	wiphy_rfkill_start_polling(sc->hw->wiphy);
	}

	#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT

	/******************/
	/* BTCOEX */
	/******************/

	/*
	* Detects if there is any priority bt traffic
	*/
	static void ath_detect_bt_priority(struct ath_softc *sc)
	{
	struct ath_btcoex *btcoex = &sc->btcoex;
	struct ath_hw *ah = sc->sc_ah;

	if (ath9k_hw_gpio_get(sc->sc_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(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
	clear_bit(BT_OP_SCAN, &btcoex->op_flags);
	/* Detect if colocated bt started scanning */
	if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
	ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
	"BT scan detected\n");
	set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
	set_bit(BT_OP_SCAN, &btcoex->op_flags);
	} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
	ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
	"BT priority traffic detected\n");
	set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
	}

	btcoex->bt_priority_cnt = 0;
	btcoex->bt_priority_time = jiffies;
	}
	}

	static void ath_mci_ftp_adjust(struct ath_softc *sc)
	{
	struct ath_btcoex *btcoex = &sc->btcoex;
	struct ath_mci_profile *mci = &btcoex->mci;
	struct ath_hw *ah = sc->sc_ah;

	if (btcoex->bt_wait_time > ATH_BTCOEX_RX_WAIT_TIME) {
	if (ar9003_mci_state(ah, MCI_STATE_NEED_FTP_STOMP) &&
	(mci->num_pan \|\| mci->num_other_acl))
	ah->btcoex_hw.mci.stomp_ftp =
	(sc->rx.num_pkts < ATH_BTCOEX_STOMP_FTP_THRESH);
	else
	ah->btcoex_hw.mci.stomp_ftp = false;
	btcoex->bt_wait_time = 0;
	sc->rx.num_pkts = 0;
	}
	}

	/*
	* This is the master bt coex timer 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_timer(unsigned long data)
	{
	struct ath_softc sc = (struct ath_softc ) data;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_btcoex *btcoex = &sc->btcoex;
	enum ath_stomp_type stomp_type;
	u32 timer_period;
	unsigned long flags;

	spin_lock_irqsave(&sc->sc_pm_lock, flags);
	if (sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP) {
	btcoex->bt_wait_time += btcoex->btcoex_period;
	spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
	goto skip_hw_wakeup;
	}
	spin_unlock_irqrestore(&sc->sc_pm_lock, flags);

	ath9k_mci_update_rssi(sc);

	ath9k_ps_wakeup(sc);

	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
	ath_detect_bt_priority(sc);

	if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
	ath_mci_ftp_adjust(sc);

	spin_lock_bh(&btcoex->btcoex_lock);

	stomp_type = btcoex->bt_stomp_type;
	timer_period = btcoex->btcoex_no_stomp;

	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) {
	if (test_bit(BT_OP_SCAN, &btcoex->op_flags)) {
	stomp_type = ATH_BTCOEX_STOMP_ALL;
	timer_period = btcoex->btscan_no_stomp;
	}
	} else if (btcoex->stomp_audio >= 5) {
	stomp_type = ATH_BTCOEX_STOMP_AUDIO;
	btcoex->stomp_audio = 0;
	}

	ath9k_hw_btcoex_bt_stomp(ah, stomp_type);
	ath9k_hw_btcoex_enable(ah);

	spin_unlock_bh(&btcoex->btcoex_lock);

	if (btcoex->btcoex_period != btcoex->btcoex_no_stomp)
	mod_timer(&btcoex->no_stomp_timer,
	jiffies + msecs_to_jiffies(timer_period));

	ath9k_ps_restore(sc);

	skip_hw_wakeup:
	mod_timer(&btcoex->period_timer,
	jiffies + msecs_to_jiffies(btcoex->btcoex_period));
	}

	/*
	* Generic tsf based hw timer which configures weight
	* registers to time slice between wlan and bt traffic
	*/
	static void ath_btcoex_no_stomp_timer(unsigned long arg)
	{
	struct ath_softc sc = (struct ath_softc )arg;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_btcoex *btcoex = &sc->btcoex;
	struct ath_common *common = ath9k_hw_common(ah);

	ath_dbg(common, BTCOEX, "no stomp timer running\n");

	ath9k_ps_wakeup(sc);
	spin_lock_bh(&btcoex->btcoex_lock);

	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW \|\|
	(!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI) &&
	test_bit(BT_OP_SCAN, &btcoex->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(ah);
	spin_unlock_bh(&btcoex->btcoex_lock);
	ath9k_ps_restore(sc);
	}

	static int ath_init_btcoex_timer(struct ath_softc *sc)
	{
	struct ath_btcoex *btcoex = &sc->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;

	setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
	(unsigned long) sc);
	setup_timer(&btcoex->no_stomp_timer, ath_btcoex_no_stomp_timer,
	(unsigned long) sc);

	spin_lock_init(&btcoex->btcoex_lock);

	return 0;
	}

	/*
	* (Re)start btcoex timers
	*/
	void ath9k_btcoex_timer_resume(struct ath_softc *sc)
	{
	struct ath_btcoex *btcoex = &sc->btcoex;
	struct ath_hw *ah = sc->sc_ah;

	ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex timers\n");

	/* make sure duty cycle timer is also stopped when resuming */
	del_timer_sync(&btcoex->no_stomp_timer);

	btcoex->bt_priority_cnt = 0;
	btcoex->bt_priority_time = jiffies;
	clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
	clear_bit(BT_OP_SCAN, &btcoex->op_flags);

	mod_timer(&btcoex->period_timer, jiffies);
	}


	/*
	* Pause btcoex timer and bt duty cycle timer
	*/
	void ath9k_btcoex_timer_pause(struct ath_softc *sc)
	{
	struct ath_btcoex *btcoex = &sc->btcoex;

	del_timer_sync(&btcoex->period_timer);
	del_timer_sync(&btcoex->no_stomp_timer);
	}

	void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc)
	{
	struct ath_btcoex *btcoex = &sc->btcoex;

	del_timer_sync(&btcoex->no_stomp_timer);
	}

	u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen)
	{
	struct ath_btcoex *btcoex = &sc->btcoex;
	struct ath_mci_profile *mci = &sc->btcoex.mci;
	u16 aggr_limit = 0;

	if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit)
	aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4;
	else if (test_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags))
	aggr_limit = min((max_4ms_framelen * 3) / 8,
	(u32)ATH_AMPDU_LIMIT_MAX);

	return aggr_limit;
	}

	void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status)
	{
	if (status & ATH9K_INT_MCI)
	ath_mci_intr(sc);
	}

	void ath9k_start_btcoex(struct ath_softc *sc)
	{
	struct ath_hw *ah = sc->sc_ah;

	if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
	!ah->btcoex_hw.enabled) {
	if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
	ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
	AR_STOMP_LOW_WLAN_WGHT, 0);
	else
	ath9k_hw_btcoex_set_weight(ah, 0, 0,
	ATH_BTCOEX_STOMP_NONE);
	ath9k_hw_btcoex_enable(ah);

	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
	ath9k_btcoex_timer_resume(sc);
	}
	}

	void ath9k_stop_btcoex(struct ath_softc *sc)
	{
	struct ath_hw *ah = sc->sc_ah;

	if (ah->btcoex_hw.enabled &&
	ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
	ath9k_btcoex_timer_pause(sc);
	ath9k_hw_btcoex_disable(ah);
	if (AR_SREV_9462(ah) \|\| AR_SREV_9565(ah))
	ath_mci_flush_profile(&sc->btcoex.mci);
	}
	}

	void ath9k_deinit_btcoex(struct ath_softc *sc)
	{
	struct ath_hw *ah = sc->sc_ah;

	if (ath9k_hw_mci_is_enabled(ah))
	ath_mci_cleanup(sc);
	}

	int ath9k_init_btcoex(struct ath_softc *sc)
	{
	struct ath_txq *txq;
	struct ath_hw *ah = sc->sc_ah;
	int r;

	ath9k_hw_btcoex_init_scheme(ah);

	switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) {
	case ATH_BTCOEX_CFG_NONE:
	break;
	case ATH_BTCOEX_CFG_2WIRE:
	ath9k_hw_btcoex_init_2wire(sc->sc_ah);
	break;
	case ATH_BTCOEX_CFG_3WIRE:
	ath9k_hw_btcoex_init_3wire(sc->sc_ah);
	r = ath_init_btcoex_timer(sc);
	if (r)
	return -1;
	txq = sc->tx.txq_map[IEEE80211_AC_BE];
	ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
	sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
	if (ath9k_hw_mci_is_enabled(ah)) {
	sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
	INIT_LIST_HEAD(&sc->btcoex.mci.info);

	r = ath_mci_setup(sc);
	if (r)
	return r;

	ath9k_hw_btcoex_init_mci(ah);
	}

	break;
	default:
	WARN_ON(1);
	break;
	}

	return 0;
	}

	static int ath9k_dump_mci_btcoex(struct ath_softc sc, u8 buf, u32 size)
	{
	struct ath_btcoex *btcoex = &sc->btcoex;
	struct ath_mci_profile *mci = &btcoex->mci;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
	u32 len = 0;
	int i;

	ATH_DUMP_BTCOEX("Total BT profiles", NUM_PROF(mci));
	ATH_DUMP_BTCOEX("MGMT", mci->num_mgmt);
	ATH_DUMP_BTCOEX("SCO", mci->num_sco);
	ATH_DUMP_BTCOEX("A2DP", mci->num_a2dp);
	ATH_DUMP_BTCOEX("HID", mci->num_hid);
	ATH_DUMP_BTCOEX("PAN", mci->num_pan);
	ATH_DUMP_BTCOEX("ACL", mci->num_other_acl);
	ATH_DUMP_BTCOEX("BDR", mci->num_bdr);
	ATH_DUMP_BTCOEX("Aggr. Limit", mci->aggr_limit);
	ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type);
	ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period);
	ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle);
	ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time);
	ATH_DUMP_BTCOEX("Concurrent Tx", btcoex_hw->mci.concur_tx);
	ATH_DUMP_BTCOEX("Concurrent RSSI cnt", btcoex->rssi_count);

	len += scnprintf(buf + len, size - len, "BT Weights: ");
	for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
	len += scnprintf(buf + len, size - len, "%08x ",
	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);
	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 */