[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / ath / ath9k / gpio.c

/*
 * 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

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

	/* Set default led pin if invalid */
	if (ah->led_pin < 0) {
		if (AR_SREV_9287(ah))
			ah->led_pin = ATH_LED_PIN_9287;
		else if (AR_SREV_9485(ah))
			ah->led_pin = ATH_LED_PIN_9485;
		else if (AR_SREV_9300(ah))
			ah->led_pin = ATH_LED_PIN_9300;
		else if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
			ah->led_pin = ATH_LED_PIN_9462;
		else
			ah->led_pin = ATH_LED_PIN_DEF;
	}

	/* Configure gpio for output */
	ath9k_hw_gpio_request_out(ah, ah->led_pin, "ath9k-led",
				  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);
}

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);

	ath9k_hw_gpio_free(sc->sc_ah, sc->sc_ah->led_pin);
}

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

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

	ath_fill_led_pin(sc);

	if (!ath9k_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;
}
#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_ps_wakeup(sc);
	spin_lock_bh(&btcoex->btcoex_lock);

	if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
		ath9k_mci_update_rssi(sc);
		ath_mci_ftp_adjust(sc);
	}

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

	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;

	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 void 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;
	btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW;

	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);
}

/*
 * (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;

	if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_3WIRE &&
	    ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI)
		return;

	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;
	struct ath_hw *ah = sc->sc_ah;

	if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_3WIRE &&
	    ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI)
		return;

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

	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 (ah->btcoex_hw.enabled ||
	    ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
		return;

	if (!(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);
	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)
		return;

	ath9k_btcoex_timer_pause(sc);
	ath9k_hw_btcoex_disable(ah);

	if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
		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);
	else {
		enum ath_btcoex_scheme scheme = ath9k_hw_get_btcoex_scheme(ah);

		if (scheme == ATH_BTCOEX_CFG_2WIRE ||
		    scheme == ATH_BTCOEX_CFG_3WIRE)
			ath9k_hw_btcoex_deinit(sc->sc_ah);
	}
}

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);
		ath_init_btcoex_timer(sc);
		txq = sc->tx.txq_map[IEEE80211_AC_BE];
		ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
		break;
	case ATH_BTCOEX_CFG_MCI:
		ath_init_btcoex_timer(sc);

		sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
		INIT_LIST_HEAD(&sc->btcoex.mci.info);
		ath9k_hw_btcoex_init_mci(ah);

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

		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 */
Commit	Line	Data
0fca65c1	1	/*
5b68138e	2	* Copyright (c) 2008-2011 Atheros Communications Inc.
0fca65c1 S	3	*
	4	* Permission to use, copy, modify, and/or distribute this software for any
	5	* purpose with or without fee is hereby granted, provided that the above
	6	* copyright notice and this permission notice appear in all copies.
	7	*
	8	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	9	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	10	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	11	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	12	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	13	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	14	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	15	*/
	16
	17	#include "ath9k.h"
	18
	19	/********************************/
	20	/* LED functions */
	21	/********************************/
	22
0cf55c21	23	#ifdef CONFIG_MAC80211_LEDS
79d4db12 MP	24
	25	void ath_fill_led_pin(struct ath_softc *sc)
	26	{
	27	struct ath_hw *ah = sc->sc_ah;
	28
	29	/* Set default led pin if invalid */
	30	if (ah->led_pin < 0) {
	31	if (AR_SREV_9287(ah))
	32	ah->led_pin = ATH_LED_PIN_9287;
	33	else if (AR_SREV_9485(ah))
	34	ah->led_pin = ATH_LED_PIN_9485;
	35	else if (AR_SREV_9300(ah))
	36	ah->led_pin = ATH_LED_PIN_9300;
	37	else if (AR_SREV_9462(ah) \|\| AR_SREV_9565(ah))
	38	ah->led_pin = ATH_LED_PIN_9462;
	39	else
	40	ah->led_pin = ATH_LED_PIN_DEF;
	41	}
	42
	43	/* Configure gpio for output */
	44	ath9k_hw_gpio_request_out(ah, ah->led_pin, "ath9k-led",
	45	AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	46
	47	/* LED off, active low */
	48	ath9k_hw_set_gpio(ah, ah->led_pin, ah->config.led_active_high ? 0 : 1);
	49	}
	50
0fca65c1 S	51	static void ath_led_brightness(struct led_classdev *led_cdev,
	52	enum led_brightness brightness)
	53	{
0cf55c21	54	struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
aeeb2065 SM	55	u32 val = (brightness == LED_OFF);
	56
	57	if (sc->sc_ah->config.led_active_high)
	58	val = !val;
	59
	60	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val);
0fca65c1 S	61	}
	62
	63	void ath_deinit_leds(struct ath_softc *sc)
	64	{
0cf55c21 FF	65	if (!sc->led_registered)
	66	return;
	67
	68	ath_led_brightness(&sc->led_cdev, LED_OFF);
	69	led_classdev_unregister(&sc->led_cdev);
db222190 MP	70
db222190 MP	71	ath9k_hw_gpio_free(sc->sc_ah, sc->sc_ah->led_pin);
0fca65c1 S	72	}
	73
	74	void ath_init_leds(struct ath_softc *sc)
	75	{
0fca65c1 S	76	int ret;
0fca65c1 S	77
7b27ba4e FF	78	if (AR_SREV_9100(sc->sc_ah))
	79	return;
	80
79d4db12 MP	81	ath_fill_led_pin(sc);
79d4db12 MP	82
0c8a1e43	83	if (!ath9k_led_blink)
0cf55c21 FF	84	sc->led_cdev.default_trigger =
	85	ieee80211_get_radio_led_name(sc->hw);
	86
	87	snprintf(sc->led_name, sizeof(sc->led_name),
	88	"ath9k-%s", wiphy_name(sc->hw->wiphy));
	89	sc->led_cdev.name = sc->led_name;
	90	sc->led_cdev.brightness_set = ath_led_brightness;
	91
	92	ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
	93	if (ret < 0)
	94	return;
	95
	96	sc->led_registered = true;
0fca65c1	97	}
0cf55c21	98	#endif
0fca65c1 S	99
	100	/*******************/
	101	/* Rfkill */
	102	/*******************/
	103
	104	static bool ath_is_rfkill_set(struct ath_softc *sc)
	105	{
	106	struct ath_hw *ah = sc->sc_ah;
90826313	107	bool is_blocked;
0fca65c1	108
90826313 MSS	109	ath9k_ps_wakeup(sc);
90826313 MSS	110	is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
0fca65c1	111	ah->rfkill_polarity;
90826313 MSS	112	ath9k_ps_restore(sc);
	113
	114	return is_blocked;
0fca65c1 S	115	}
	116
	117	void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
	118	{
9ac58615	119	struct ath_softc *sc = hw->priv;
0fca65c1 S	120	bool blocked = !!ath_is_rfkill_set(sc);
	121
	122	wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
	123	}
	124
	125	void ath_start_rfkill_poll(struct ath_softc *sc)
	126	{
	127	struct ath_hw *ah = sc->sc_ah;
	128
	129	if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
	130	wiphy_rfkill_start_polling(sc->hw->wiphy);
	131	}
	132
4daa7760 SM	133	#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
4daa7760 SM	134
0fca65c1 S	135	/******************/
	136	/* BTCOEX */
	137	/******************/
	138
	139	/*
	140	* Detects if there is any priority bt traffic
	141	*/
	142	static void ath_detect_bt_priority(struct ath_softc *sc)
	143	{
	144	struct ath_btcoex *btcoex = &sc->btcoex;
	145	struct ath_hw *ah = sc->sc_ah;
	146
	147	if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
	148	btcoex->bt_priority_cnt++;
	149
	150	if (time_after(jiffies, btcoex->bt_priority_time +
	151	msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
e6930c4b SM	152	clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
e6930c4b SM	153	clear_bit(BT_OP_SCAN, &btcoex->op_flags);
58da1318 VT	154	/* Detect if colocated bt started scanning */
58da1318 VT	155	if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
d2182b69	156	ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
226afe68	157	"BT scan detected\n");
e6930c4b SM	158	set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
e6930c4b SM	159	set_bit(BT_OP_SCAN, &btcoex->op_flags);
58da1318	160	} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
d2182b69	161	ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
226afe68	162	"BT priority traffic detected\n");
e6930c4b	163	set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
0fca65c1 S	164	}
	165
	166	btcoex->bt_priority_cnt = 0;
	167	btcoex->bt_priority_time = jiffies;
	168	}
	169	}
	170
78b1775b SM	171	static void ath_mci_ftp_adjust(struct ath_softc *sc)
	172	{
	173	struct ath_btcoex *btcoex = &sc->btcoex;
	174	struct ath_mci_profile *mci = &btcoex->mci;
	175	struct ath_hw *ah = sc->sc_ah;
	176
78b1775b SM	177	if (btcoex->bt_wait_time > ATH_BTCOEX_RX_WAIT_TIME) {
	178	if (ar9003_mci_state(ah, MCI_STATE_NEED_FTP_STOMP) &&
	179	(mci->num_pan \|\| mci->num_other_acl))
	180	ah->btcoex_hw.mci.stomp_ftp =
	181	(sc->rx.num_pkts < ATH_BTCOEX_STOMP_FTP_THRESH);
	182	else
	183	ah->btcoex_hw.mci.stomp_ftp = false;
	184	btcoex->bt_wait_time = 0;
	185	sc->rx.num_pkts = 0;
	186	}
	187	}
	188
0fca65c1 S	189	/*
	190	* This is the master bt coex timer which runs for every
	191	* 45ms, bt traffic will be given priority during 55% of this
	192	* period while wlan gets remaining 45%
	193	*/
	194	static void ath_btcoex_period_timer(unsigned long data)
	195	{
	196	struct ath_softc sc = (struct ath_softc ) data;
	197	struct ath_hw *ah = sc->sc_ah;
	198	struct ath_btcoex *btcoex = &sc->btcoex;
750f32cf	199	enum ath_stomp_type stomp_type;
58da1318	200	u32 timer_period;
08d4df41 RM	201	unsigned long flags;
	202
	203	spin_lock_irqsave(&sc->sc_pm_lock, flags);
	204	if (sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP) {
be41b052	205	btcoex->bt_wait_time += btcoex->btcoex_period;
08d4df41 RM	206	spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
	207	goto skip_hw_wakeup;
	208	}
	209	spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
0fca65c1	210
a039a993	211	ath9k_ps_wakeup(sc);
6e6dd08d	212	spin_lock_bh(&btcoex->btcoex_lock);
750f32cf	213
6e6dd08d SM	214	if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
6e6dd08d SM	215	ath9k_mci_update_rssi(sc);
78b1775b	216	ath_mci_ftp_adjust(sc);
6e6dd08d	217	}
6995fb80	218
6e6dd08d SM	219	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
6e6dd08d SM	220	ath_detect_bt_priority(sc);
0fca65c1	221
750f32cf SM	222	stomp_type = btcoex->bt_stomp_type;
	223	timer_period = btcoex->btcoex_no_stomp;
	224
	225	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) {
	226	if (test_bit(BT_OP_SCAN, &btcoex->op_flags)) {
	227	stomp_type = ATH_BTCOEX_STOMP_ALL;
	228	timer_period = btcoex->btscan_no_stomp;
	229	}
2884561a RM	230	} else if (btcoex->stomp_audio >= 5) {
	231	stomp_type = ATH_BTCOEX_STOMP_AUDIO;
	232	btcoex->stomp_audio = 0;
750f32cf	233	}
0fca65c1	234
750f32cf	235	ath9k_hw_btcoex_bt_stomp(ah, stomp_type);
bc6d5c29	236	ath9k_hw_btcoex_enable(ah);
750f32cf	237
0fca65c1 S	238	spin_unlock_bh(&btcoex->btcoex_lock);
0fca65c1 S	239
168c6f89 FF	240	if (btcoex->btcoex_period != btcoex->btcoex_no_stomp)
	241	mod_timer(&btcoex->no_stomp_timer,
	242	jiffies + msecs_to_jiffies(timer_period));
0fca65c1	243
a039a993	244	ath9k_ps_restore(sc);
750f32cf	245
08d4df41	246	skip_hw_wakeup:
750f32cf SM	247	mod_timer(&btcoex->period_timer,
750f32cf SM	248	jiffies + msecs_to_jiffies(btcoex->btcoex_period));
0fca65c1 S	249	}
	250
	251	/*
	252	* Generic tsf based hw timer which configures weight
	253	* registers to time slice between wlan and bt traffic
	254	*/
168c6f89	255	static void ath_btcoex_no_stomp_timer(unsigned long arg)
0fca65c1 S	256	{
	257	struct ath_softc sc = (struct ath_softc )arg;
	258	struct ath_hw *ah = sc->sc_ah;
	259	struct ath_btcoex *btcoex = &sc->btcoex;
0fca65c1	260
a039a993	261	ath9k_ps_wakeup(sc);
0fca65c1 S	262	spin_lock_bh(&btcoex->btcoex_lock);
0fca65c1 S	263
e6930c4b	264	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW \|\|
750f32cf SM	265	(!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI) &&
750f32cf SM	266	test_bit(BT_OP_SCAN, &btcoex->op_flags)))
978f78bf	267	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
2884561a	268	else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
978f78bf	269	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
0fca65c1	270
bc6d5c29	271	ath9k_hw_btcoex_enable(ah);
0fca65c1	272	spin_unlock_bh(&btcoex->btcoex_lock);
a039a993	273	ath9k_ps_restore(sc);
0fca65c1 S	274	}
0fca65c1 S	275
44b9b56e	276	static void ath_init_btcoex_timer(struct ath_softc *sc)
0fca65c1 S	277	{
	278	struct ath_btcoex *btcoex = &sc->btcoex;
	279
dfd0587a	280	btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD;
168c6f89	281	btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
0fca65c1	282	btcoex->btcoex_period / 100;
168c6f89	283	btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
58da1318	284	btcoex->btcoex_period / 100;
e1ff147d	285	btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
0fca65c1 S	286
	287	setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
	288	(unsigned long) sc);
168c6f89 FF	289	setup_timer(&btcoex->no_stomp_timer, ath_btcoex_no_stomp_timer,
168c6f89 FF	290	(unsigned long) sc);
0fca65c1 S	291
0fca65c1 S	292	spin_lock_init(&btcoex->btcoex_lock);
0fca65c1 S	293	}
	294
	295	/*
	296	* (Re)start btcoex timers
	297	*/
	298	void ath9k_btcoex_timer_resume(struct ath_softc *sc)
	299	{
	300	struct ath_btcoex *btcoex = &sc->btcoex;
	301	struct ath_hw *ah = sc->sc_ah;
	302
c7266e99 SM	303	if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_3WIRE &&
	304	ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI)
	305	return;
	306
d2182b69	307	ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex timers\n");
0fca65c1 S	308
0fca65c1 S	309	/* make sure duty cycle timer is also stopped when resuming */
168c6f89	310	del_timer_sync(&btcoex->no_stomp_timer);
0fca65c1 S	311
	312	btcoex->bt_priority_cnt = 0;
	313	btcoex->bt_priority_time = jiffies;
c11216d1 MSS	314	clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
c11216d1 MSS	315	clear_bit(BT_OP_SCAN, &btcoex->op_flags);
0fca65c1 S	316
	317	mod_timer(&btcoex->period_timer, jiffies);
	318	}
	319
0fca65c1 S	320	/*
	321	* Pause btcoex timer and bt duty cycle timer
	322	*/
	323	void ath9k_btcoex_timer_pause(struct ath_softc *sc)
	324	{
	325	struct ath_btcoex *btcoex = &sc->btcoex;
c7266e99 SM	326	struct ath_hw *ah = sc->sc_ah;
	327
	328	if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_3WIRE &&
	329	ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI)
	330	return;
	331
	332	ath_dbg(ath9k_hw_common(ah), BTCOEX, "Stopping btcoex timers\n");
0fca65c1 S	333
0fca65c1 S	334	del_timer_sync(&btcoex->period_timer);
168c6f89	335	del_timer_sync(&btcoex->no_stomp_timer);
0fca65c1	336	}
5908120f	337
08d4df41 RM	338	void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc)
	339	{
	340	struct ath_btcoex *btcoex = &sc->btcoex;
	341
168c6f89	342	del_timer_sync(&btcoex->no_stomp_timer);
08d4df41 RM	343	}
08d4df41 RM	344
c0ac53fa SM	345	u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen)
c0ac53fa SM	346	{
e6930c4b	347	struct ath_btcoex *btcoex = &sc->btcoex;
c0ac53fa SM	348	struct ath_mci_profile *mci = &sc->btcoex.mci;
	349	u16 aggr_limit = 0;
	350
	351	if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit)
	352	aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4;
e6930c4b	353	else if (test_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags))
c0ac53fa SM	354	aggr_limit = min((max_4ms_framelen * 3) / 8,
	355	(u32)ATH_AMPDU_LIMIT_MAX);
	356
	357	return aggr_limit;
	358	}
	359
56ca0dba SM	360	void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status)
56ca0dba SM	361	{
9a15858f	362	if (status & ATH9K_INT_MCI)
56ca0dba SM	363	ath_mci_intr(sc);
	364	}
	365
df198b17 SM	366	void ath9k_start_btcoex(struct ath_softc *sc)
	367	{
	368	struct ath_hw *ah = sc->sc_ah;
	369
c7266e99 SM	370	if (ah->btcoex_hw.enabled \|\|
	371	ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
	372	return;
df198b17	373
c7266e99 SM	374	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
	375	ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
	376	AR_STOMP_LOW_WLAN_WGHT, 0);
	377	else
	378	ath9k_hw_btcoex_set_weight(ah, 0, 0,
	379	ATH_BTCOEX_STOMP_NONE);
	380	ath9k_hw_btcoex_enable(ah);
	381	ath9k_btcoex_timer_resume(sc);
df198b17 SM	382	}
	383
	384	void ath9k_stop_btcoex(struct ath_softc *sc)
	385	{
	386	struct ath_hw *ah = sc->sc_ah;
	387
c7266e99 SM	388	if (!ah->btcoex_hw.enabled \|\|
	389	ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
	390	return;
	391
	392	ath9k_btcoex_timer_pause(sc);
	393	ath9k_hw_btcoex_disable(ah);
	394
	395	if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
	396	ath_mci_flush_profile(&sc->btcoex.mci);
df198b17 SM	397	}
df198b17 SM	398
5908120f SM	399	void ath9k_deinit_btcoex(struct ath_softc *sc)
5908120f SM	400	{
dd89f05a MSS	401	struct ath_hw *ah = sc->sc_ah;
dd89f05a MSS	402
dd89f05a	403	if (ath9k_hw_mci_is_enabled(ah))
5908120f	404	ath_mci_cleanup(sc);
db222190 MP	405	else {
	406	enum ath_btcoex_scheme scheme = ath9k_hw_get_btcoex_scheme(ah);
	407
	408	if (scheme == ATH_BTCOEX_CFG_2WIRE \|\|
	409	scheme == ATH_BTCOEX_CFG_3WIRE)
	410	ath9k_hw_btcoex_deinit(sc->sc_ah);
	411	}
5908120f SM	412	}
	413
	414	int ath9k_init_btcoex(struct ath_softc *sc)
	415	{
	416	struct ath_txq *txq;
	417	struct ath_hw *ah = sc->sc_ah;
	418	int r;
	419
d68475de SM	420	ath9k_hw_btcoex_init_scheme(ah);
d68475de SM	421
5908120f SM	422	switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) {
	423	case ATH_BTCOEX_CFG_NONE:
	424	break;
	425	case ATH_BTCOEX_CFG_2WIRE:
	426	ath9k_hw_btcoex_init_2wire(sc->sc_ah);
	427	break;
	428	case ATH_BTCOEX_CFG_3WIRE:
	429	ath9k_hw_btcoex_init_3wire(sc->sc_ah);
44b9b56e	430	ath_init_btcoex_timer(sc);
bea843c7	431	txq = sc->tx.txq_map[IEEE80211_AC_BE];
5908120f	432	ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
e1ff147d SM	433	break;
	434	case ATH_BTCOEX_CFG_MCI:
	435	ath_init_btcoex_timer(sc);
	436
	437	sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
	438	INIT_LIST_HEAD(&sc->btcoex.mci.info);
	439	ath9k_hw_btcoex_init_mci(ah);
	440
	441	r = ath_mci_setup(sc);
	442	if (r)
	443	return r;
5908120f SM	444
	445	break;
	446	default:
	447	WARN_ON(1);
	448	break;
	449	}
	450
	451	return 0;
	452	}
4daa7760	453
ac46ba43	454	static int ath9k_dump_mci_btcoex(struct ath_softc sc, u8 buf, u32 size)
4df50ca8	455	{
4df50ca8 RM	456	struct ath_btcoex *btcoex = &sc->btcoex;
	457	struct ath_mci_profile *mci = &btcoex->mci;
	458	struct ath_hw *ah = sc->sc_ah;
	459	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
ac46ba43	460	u32 len = 0;
4df50ca8 RM	461	int i;
	462
	463	ATH_DUMP_BTCOEX("Total BT profiles", NUM_PROF(mci));
ac46ba43 SM	464	ATH_DUMP_BTCOEX("MGMT", mci->num_mgmt);
	465	ATH_DUMP_BTCOEX("SCO", mci->num_sco);
	466	ATH_DUMP_BTCOEX("A2DP", mci->num_a2dp);
	467	ATH_DUMP_BTCOEX("HID", mci->num_hid);
	468	ATH_DUMP_BTCOEX("PAN", mci->num_pan);
	469	ATH_DUMP_BTCOEX("ACL", mci->num_other_acl);
	470	ATH_DUMP_BTCOEX("BDR", mci->num_bdr);
4df50ca8 RM	471	ATH_DUMP_BTCOEX("Aggr. Limit", mci->aggr_limit);
	472	ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type);
	473	ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period);
	474	ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle);
	475	ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time);
	476	ATH_DUMP_BTCOEX("Concurrent Tx", btcoex_hw->mci.concur_tx);
ac46ba43 SM	477	ATH_DUMP_BTCOEX("Concurrent RSSI cnt", btcoex->rssi_count);
ac46ba43 SM	478
5e88ba62	479	len += scnprintf(buf + len, size - len, "BT Weights: ");
4df50ca8	480	for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
5e88ba62 ZK	481	len += scnprintf(buf + len, size - len, "%08x ",
	482	btcoex_hw->bt_weight[i]);
	483	len += scnprintf(buf + len, size - len, "\n");
	484	len += scnprintf(buf + len, size - len, "WLAN Weights: ");
4df50ca8	485	for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
5e88ba62 ZK	486	len += scnprintf(buf + len, size - len, "%08x ",
	487	btcoex_hw->wlan_weight[i]);
	488	len += scnprintf(buf + len, size - len, "\n");
	489	len += scnprintf(buf + len, size - len, "Tx Priorities: ");
4df50ca8	490	for (i = 0; i < ATH_BTCOEX_STOMP_MAX; i++)
5e88ba62	491	len += scnprintf(buf + len, size - len, "%08x ",
4df50ca8	492	btcoex_hw->tx_prio[i]);
ac46ba43	493
5e88ba62	494	len += scnprintf(buf + len, size - len, "\n");
4df50ca8 RM	495
	496	return len;
	497	}
ac46ba43 SM	498
	499	static int ath9k_dump_legacy_btcoex(struct ath_softc sc, u8 buf, u32 size)
	500	{
	501
	502	struct ath_btcoex *btcoex = &sc->btcoex;
	503	u32 len = 0;
	504
	505	ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type);
	506	ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period);
	507	ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle);
	508	ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time);
	509
	510	return len;
	511	}
	512
	513	int ath9k_dump_btcoex(struct ath_softc sc, u8 buf, u32 size)
	514	{
	515	if (ath9k_hw_mci_is_enabled(sc->sc_ah))
	516	return ath9k_dump_mci_btcoex(sc, buf, size);
	517	else
	518	return ath9k_dump_legacy_btcoex(sc, buf, size);
	519	}
	520
4daa7760	521	#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */