[deliverable/linux.git] / drivers / net / wireless / ath / ath9k / gpio.c

/*
 * Copyright (c) 2008-2009 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		*/
/********************************/

static void ath_led_blink_work(struct work_struct *work)
{
	struct ath_softc *sc = container_of(work, struct ath_softc,
					    ath_led_blink_work.work);

	if (!(sc->sc_flags & SC_OP_LED_ASSOCIATED))
		return;

	if ((sc->led_on_duration == ATH_LED_ON_DURATION_IDLE) ||
	    (sc->led_off_duration == ATH_LED_OFF_DURATION_IDLE))
		ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0);
	else
		ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin,
				  (sc->sc_flags & SC_OP_LED_ON) ? 1 : 0);

	ieee80211_queue_delayed_work(sc->hw,
				     &sc->ath_led_blink_work,
				     (sc->sc_flags & SC_OP_LED_ON) ?
					msecs_to_jiffies(sc->led_off_duration) :
					msecs_to_jiffies(sc->led_on_duration));

	sc->led_on_duration = sc->led_on_cnt ?
			max((ATH_LED_ON_DURATION_IDLE - sc->led_on_cnt), 25) :
			ATH_LED_ON_DURATION_IDLE;
	sc->led_off_duration = sc->led_off_cnt ?
			max((ATH_LED_OFF_DURATION_IDLE - sc->led_off_cnt), 10) :
			ATH_LED_OFF_DURATION_IDLE;
	sc->led_on_cnt = sc->led_off_cnt = 0;
	if (sc->sc_flags & SC_OP_LED_ON)
		sc->sc_flags &= ~SC_OP_LED_ON;
	else
		sc->sc_flags |= SC_OP_LED_ON;
}

static void ath_led_brightness(struct led_classdev *led_cdev,
			       enum led_brightness brightness)
{
	struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
	struct ath_softc *sc = led->sc;

	switch (brightness) {
	case LED_OFF:
		if (led->led_type == ATH_LED_ASSOC ||
		    led->led_type == ATH_LED_RADIO) {
			ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin,
				(led->led_type == ATH_LED_RADIO));
			sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
			if (led->led_type == ATH_LED_RADIO)
				sc->sc_flags &= ~SC_OP_LED_ON;
		} else {
			sc->led_off_cnt++;
		}
		break;
	case LED_FULL:
		if (led->led_type == ATH_LED_ASSOC) {
			sc->sc_flags |= SC_OP_LED_ASSOCIATED;
			if (led_blink)
				ieee80211_queue_delayed_work(sc->hw,
						     &sc->ath_led_blink_work, 0);
		} else if (led->led_type == ATH_LED_RADIO) {
			ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0);
			sc->sc_flags |= SC_OP_LED_ON;
		} else {
			sc->led_on_cnt++;
		}
		break;
	default:
		break;
	}
}

static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
			    char *trigger)
{
	int ret;

	led->sc = sc;
	led->led_cdev.name = led->name;
	led->led_cdev.default_trigger = trigger;
	led->led_cdev.brightness_set = ath_led_brightness;

	ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
	if (ret)
		ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
			  "Failed to register led:%s", led->name);
	else
		led->registered = 1;
	return ret;
}

static void ath_unregister_led(struct ath_led *led)
{
	if (led->registered) {
		led_classdev_unregister(&led->led_cdev);
		led->registered = 0;
	}
}

void ath_deinit_leds(struct ath_softc *sc)
{
	ath_unregister_led(&sc->assoc_led);
	sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
	ath_unregister_led(&sc->tx_led);
	ath_unregister_led(&sc->rx_led);
	ath_unregister_led(&sc->radio_led);
	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
}

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

	if (AR_SREV_9287(sc->sc_ah))
		sc->sc_ah->led_pin = ATH_LED_PIN_9287;
	else
		sc->sc_ah->led_pin = ATH_LED_PIN_DEF;

	/* Configure gpio 1 for output */
	ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin,
			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	/* LED off, active low */
	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);

	if (led_blink)
		INIT_DELAYED_WORK(&sc->ath_led_blink_work, ath_led_blink_work);

	trigger = ieee80211_get_radio_led_name(sc->hw);
	snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
		"ath9k-%s::radio", wiphy_name(sc->hw->wiphy));
	ret = ath_register_led(sc, &sc->radio_led, trigger);
	sc->radio_led.led_type = ATH_LED_RADIO;
	if (ret)
		goto fail;

	trigger = ieee80211_get_assoc_led_name(sc->hw);
	snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
		"ath9k-%s::assoc", wiphy_name(sc->hw->wiphy));
	ret = ath_register_led(sc, &sc->assoc_led, trigger);
	sc->assoc_led.led_type = ATH_LED_ASSOC;
	if (ret)
		goto fail;

	trigger = ieee80211_get_tx_led_name(sc->hw);
	snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
		"ath9k-%s::tx", wiphy_name(sc->hw->wiphy));
	ret = ath_register_led(sc, &sc->tx_led, trigger);
	sc->tx_led.led_type = ATH_LED_TX;
	if (ret)
		goto fail;

	trigger = ieee80211_get_rx_led_name(sc->hw);
	snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
		"ath9k-%s::rx", wiphy_name(sc->hw->wiphy));
	ret = ath_register_led(sc, &sc->rx_led, trigger);
	sc->rx_led.led_type = ATH_LED_RX;
	if (ret)
		goto fail;

	return;

fail:
	if (led_blink)
		cancel_delayed_work_sync(&sc->ath_led_blink_work);
	ath_deinit_leds(sc);
}

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

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

	return ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
				  ah->rfkill_polarity;
}

void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
{
	struct ath_wiphy *aphy = hw->priv;
	struct ath_softc *sc = aphy->sc;
	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);
}

/******************/
/*     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))) {
		sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED | SC_OP_BT_SCAN);
		/* Detect if colocated bt started scanning */
		if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
			ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
				  "BT scan detected");
			sc->sc_flags |= (SC_OP_BT_SCAN |
					 SC_OP_BT_PRIORITY_DETECTED);
		} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
			ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
				  "BT priority traffic detected");
			sc->sc_flags |= SC_OP_BT_PRIORITY_DETECTED;
		}

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

static void ath9k_gen_timer_start(struct ath_hw *ah,
				  struct ath_gen_timer *timer,
				  u32 timer_next,
				  u32 timer_period)
{
	ath9k_hw_gen_timer_start(ah, timer, timer_next, timer_period);

	if ((ah->imask & ATH9K_INT_GENTIMER) == 0) {
		ath9k_hw_disable_interrupts(ah);
		ah->imask |= ATH9K_INT_GENTIMER;
		ath9k_hw_set_interrupts(ah, ah->imask);
	}
}

static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
{
	struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;

	ath9k_hw_gen_timer_stop(ah, timer);

	/* if no timer is enabled, turn off interrupt mask */
	if (timer_table->timer_mask.val == 0) {
		ath9k_hw_disable_interrupts(ah);
		ah->imask &= ~ATH9K_INT_GENTIMER;
		ath9k_hw_set_interrupts(ah, ah->imask);
	}
}

/*
 * 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;
	struct ath_common *common = ath9k_hw_common(ah);
	u32 timer_period;
	bool is_btscan;

	ath_detect_bt_priority(sc);

	is_btscan = sc->sc_flags & SC_OP_BT_SCAN;

	spin_lock_bh(&btcoex->btcoex_lock);

	ath9k_cmn_btcoex_bt_stomp(common, is_btscan ? ATH_BTCOEX_STOMP_ALL :
			      btcoex->bt_stomp_type);

	spin_unlock_bh(&btcoex->btcoex_lock);

	if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) {
		if (btcoex->hw_timer_enabled)
			ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);

		timer_period = is_btscan ? btcoex->btscan_no_stomp :
					   btcoex->btcoex_no_stomp;
		ath9k_gen_timer_start(ah,
				      btcoex->no_stomp_timer,
				      (ath9k_hw_gettsf32(ah) +
				       timer_period), timer_period * 10);
		btcoex->hw_timer_enabled = true;
	}

	mod_timer(&btcoex->period_timer, jiffies +
				  msecs_to_jiffies(ATH_BTCOEX_DEF_BT_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(void *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);
	bool is_btscan = sc->sc_flags & SC_OP_BT_SCAN;

	ath_print(common, ATH_DBG_BTCOEX,
		  "no stomp timer running\n");

	spin_lock_bh(&btcoex->btcoex_lock);

	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || is_btscan)
		ath9k_cmn_btcoex_bt_stomp(common, ATH_BTCOEX_STOMP_NONE);
	 else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
		ath9k_cmn_btcoex_bt_stomp(common, ATH_BTCOEX_STOMP_LOW);

	spin_unlock_bh(&btcoex->btcoex_lock);
}

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

	btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000;
	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);

	spin_lock_init(&btcoex->btcoex_lock);

	btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah,
			ath_btcoex_no_stomp_timer,
			ath_btcoex_no_stomp_timer,
			(void *) sc, AR_FIRST_NDP_TIMER);

	if (!btcoex->no_stomp_timer)
		return -ENOMEM;

	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_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
		  "Starting btcoex timers");

	/* make sure duty cycle timer is also stopped when resuming */
	if (btcoex->hw_timer_enabled)
		ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);

	btcoex->bt_priority_cnt = 0;
	btcoex->bt_priority_time = jiffies;
	sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED | SC_OP_BT_SCAN);

	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;

	del_timer_sync(&btcoex->period_timer);

	if (btcoex->hw_timer_enabled)
		ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);

	btcoex->hw_timer_enabled = false;
}
Commit	Line	Data
0fca65c1 S	1	/*
	2	* Copyright (c) 2008-2009 Atheros Communications Inc.
	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
	23	static void ath_led_blink_work(struct work_struct *work)
	24	{
	25	struct ath_softc *sc = container_of(work, struct ath_softc,
	26	ath_led_blink_work.work);
	27
	28	if (!(sc->sc_flags & SC_OP_LED_ASSOCIATED))
	29	return;
	30
	31	if ((sc->led_on_duration == ATH_LED_ON_DURATION_IDLE) \|\|
	32	(sc->led_off_duration == ATH_LED_OFF_DURATION_IDLE))
	33	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0);
	34	else
	35	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin,
	36	(sc->sc_flags & SC_OP_LED_ON) ? 1 : 0);
	37
	38	ieee80211_queue_delayed_work(sc->hw,
	39	&sc->ath_led_blink_work,
	40	(sc->sc_flags & SC_OP_LED_ON) ?
	41	msecs_to_jiffies(sc->led_off_duration) :
	42	msecs_to_jiffies(sc->led_on_duration));
	43
	44	sc->led_on_duration = sc->led_on_cnt ?
	45	max((ATH_LED_ON_DURATION_IDLE - sc->led_on_cnt), 25) :
	46	ATH_LED_ON_DURATION_IDLE;
	47	sc->led_off_duration = sc->led_off_cnt ?
	48	max((ATH_LED_OFF_DURATION_IDLE - sc->led_off_cnt), 10) :
	49	ATH_LED_OFF_DURATION_IDLE;
	50	sc->led_on_cnt = sc->led_off_cnt = 0;
	51	if (sc->sc_flags & SC_OP_LED_ON)
	52	sc->sc_flags &= ~SC_OP_LED_ON;
	53	else
	54	sc->sc_flags \|= SC_OP_LED_ON;
	55	}
	56
	57	static void ath_led_brightness(struct led_classdev *led_cdev,
	58	enum led_brightness brightness)
	59	{
	60	struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
	61	struct ath_softc *sc = led->sc;
	62
	63	switch (brightness) {
	64	case LED_OFF:
65	if (led->led_type == ATH_LED_ASSOC \|\|
66	led->led_type == ATH_LED_RADIO) {
67	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin,
68	(led->led_type == ATH_LED_RADIO));
69	sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
70	if (led->led_type == ATH_LED_RADIO)
71	sc->sc_flags &= ~SC_OP_LED_ON;
72	} else {
73	sc->led_off_cnt++;
74	}
75	break;
76	case LED_FULL:
77	if (led->led_type == ATH_LED_ASSOC) {
78	sc->sc_flags \|= SC_OP_LED_ASSOCIATED;
9a75c2ff VN	79	if (led_blink)
9a75c2ff VN	80	ieee80211_queue_delayed_work(sc->hw,
0fca65c1 S	81	&sc->ath_led_blink_work, 0);
	82	} else if (led->led_type == ATH_LED_RADIO) {
	83	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0);
	84	sc->sc_flags \|= SC_OP_LED_ON;
	85	} else {
	86	sc->led_on_cnt++;
	87	}
	88	break;
	89	default:
	90	break;
	91	}
	92	}
	93
	94	static int ath_register_led(struct ath_softc sc, struct ath_led led,
	95	char *trigger)
	96	{
	97	int ret;
	98
	99	led->sc = sc;
	100	led->led_cdev.name = led->name;
	101	led->led_cdev.default_trigger = trigger;
	102	led->led_cdev.brightness_set = ath_led_brightness;
	103
	104	ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
	105	if (ret)
	106	ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
	107	"Failed to register led:%s", led->name);
	108	else
	109	led->registered = 1;
	110	return ret;
	111	}
	112
	113	static void ath_unregister_led(struct ath_led *led)
	114	{
	115	if (led->registered) {
	116	led_classdev_unregister(&led->led_cdev);
	117	led->registered = 0;
	118	}
	119	}
	120
	121	void ath_deinit_leds(struct ath_softc *sc)
	122	{
	123	ath_unregister_led(&sc->assoc_led);
	124	sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
	125	ath_unregister_led(&sc->tx_led);
	126	ath_unregister_led(&sc->rx_led);
	127	ath_unregister_led(&sc->radio_led);
	128	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
	129	}
	130
	131	void ath_init_leds(struct ath_softc *sc)
	132	{
	133	char *trigger;
	134	int ret;
	135
	136	if (AR_SREV_9287(sc->sc_ah))
	137	sc->sc_ah->led_pin = ATH_LED_PIN_9287;
	138	else
	139	sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
	140
	141	/* Configure gpio 1 for output */
	142	ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin,
	143	AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	144	/* LED off, active low */
145	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
146
9a75c2ff VN	147	if (led_blink)
9a75c2ff VN	148	INIT_DELAYED_WORK(&sc->ath_led_blink_work, ath_led_blink_work);
0fca65c1 S	149
	150	trigger = ieee80211_get_radio_led_name(sc->hw);
	151	snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
	152	"ath9k-%s::radio", wiphy_name(sc->hw->wiphy));
	153	ret = ath_register_led(sc, &sc->radio_led, trigger);
	154	sc->radio_led.led_type = ATH_LED_RADIO;
	155	if (ret)
	156	goto fail;
	157
	158	trigger = ieee80211_get_assoc_led_name(sc->hw);
	159	snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
	160	"ath9k-%s::assoc", wiphy_name(sc->hw->wiphy));
	161	ret = ath_register_led(sc, &sc->assoc_led, trigger);
	162	sc->assoc_led.led_type = ATH_LED_ASSOC;
	163	if (ret)
	164	goto fail;
	165
	166	trigger = ieee80211_get_tx_led_name(sc->hw);
	167	snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
	168	"ath9k-%s::tx", wiphy_name(sc->hw->wiphy));
	169	ret = ath_register_led(sc, &sc->tx_led, trigger);
	170	sc->tx_led.led_type = ATH_LED_TX;
	171	if (ret)
	172	goto fail;
	173
	174	trigger = ieee80211_get_rx_led_name(sc->hw);
	175	snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
	176	"ath9k-%s::rx", wiphy_name(sc->hw->wiphy));
	177	ret = ath_register_led(sc, &sc->rx_led, trigger);
	178	sc->rx_led.led_type = ATH_LED_RX;
	179	if (ret)
	180	goto fail;
	181
	182	return;
	183
	184	fail:
9a75c2ff VN	185	if (led_blink)
9a75c2ff VN	186	cancel_delayed_work_sync(&sc->ath_led_blink_work);
0fca65c1 S	187	ath_deinit_leds(sc);
	188	}
	189
	190	/*******************/
	191	/* Rfkill */
	192	/*******************/
	193
	194	static bool ath_is_rfkill_set(struct ath_softc *sc)
	195	{
	196	struct ath_hw *ah = sc->sc_ah;
	197
	198	return ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
	199	ah->rfkill_polarity;
	200	}
	201
	202	void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
	203	{
	204	struct ath_wiphy *aphy = hw->priv;
	205	struct ath_softc *sc = aphy->sc;
	206	bool blocked = !!ath_is_rfkill_set(sc);
	207
	208	wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
	209	}
	210
	211	void ath_start_rfkill_poll(struct ath_softc *sc)
	212	{
	213	struct ath_hw *ah = sc->sc_ah;
	214
	215	if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
	216	wiphy_rfkill_start_polling(sc->hw->wiphy);
	217	}
	218
	219	/******************/
	220	/* BTCOEX */
	221	/******************/
	222
	223	/*
	224	* Detects if there is any priority bt traffic
	225	*/
	226	static void ath_detect_bt_priority(struct ath_softc *sc)
	227	{
	228	struct ath_btcoex *btcoex = &sc->btcoex;
	229	struct ath_hw *ah = sc->sc_ah;
	230
	231	if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
	232	btcoex->bt_priority_cnt++;
	233
	234	if (time_after(jiffies, btcoex->bt_priority_time +
	235	msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
58da1318 VT	236	sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED \| SC_OP_BT_SCAN);
	237	/* Detect if colocated bt started scanning */
	238	if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
	239	ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
	240	"BT scan detected");
	241	sc->sc_flags \|= (SC_OP_BT_SCAN \|
	242	SC_OP_BT_PRIORITY_DETECTED);
	243	} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
0fca65c1 S	244	ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
	245	"BT priority traffic detected");
	246	sc->sc_flags \|= SC_OP_BT_PRIORITY_DETECTED;
0fca65c1 S	247	}
	248
	249	btcoex->bt_priority_cnt = 0;
	250	btcoex->bt_priority_time = jiffies;
	251	}
	252	}
	253
0fca65c1 S	254	static void ath9k_gen_timer_start(struct ath_hw *ah,
	255	struct ath_gen_timer *timer,
	256	u32 timer_next,
	257	u32 timer_period)
	258	{
0fca65c1 S	259	ath9k_hw_gen_timer_start(ah, timer, timer_next, timer_period);
0fca65c1 S	260
3069168c	261	if ((ah->imask & ATH9K_INT_GENTIMER) == 0) {
4df3071e	262	ath9k_hw_disable_interrupts(ah);
3069168c PR	263	ah->imask \|= ATH9K_INT_GENTIMER;
3069168c PR	264	ath9k_hw_set_interrupts(ah, ah->imask);
0fca65c1 S	265	}
	266	}
	267
	268	static void ath9k_gen_timer_stop(struct ath_hw ah, struct ath_gen_timer timer)
	269	{
0fca65c1 S	270	struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
	271
	272	ath9k_hw_gen_timer_stop(ah, timer);
	273
	274	/* if no timer is enabled, turn off interrupt mask */
	275	if (timer_table->timer_mask.val == 0) {
4df3071e	276	ath9k_hw_disable_interrupts(ah);
3069168c PR	277	ah->imask &= ~ATH9K_INT_GENTIMER;
3069168c PR	278	ath9k_hw_set_interrupts(ah, ah->imask);
0fca65c1 S	279	}
	280	}
	281
	282	/*
	283	* This is the master bt coex timer which runs for every
	284	* 45ms, bt traffic will be given priority during 55% of this
	285	* period while wlan gets remaining 45%
	286	*/
	287	static void ath_btcoex_period_timer(unsigned long data)
	288	{
	289	struct ath_softc sc = (struct ath_softc ) data;
	290	struct ath_hw *ah = sc->sc_ah;
	291	struct ath_btcoex *btcoex = &sc->btcoex;
d99eeb87	292	struct ath_common *common = ath9k_hw_common(ah);
58da1318 VT	293	u32 timer_period;
58da1318 VT	294	bool is_btscan;
0fca65c1 S	295
	296	ath_detect_bt_priority(sc);
	297
58da1318 VT	298	is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
58da1318 VT	299
0fca65c1 S	300	spin_lock_bh(&btcoex->btcoex_lock);
0fca65c1 S	301
d99eeb87	302	ath9k_cmn_btcoex_bt_stomp(common, is_btscan ? ATH_BTCOEX_STOMP_ALL :
58da1318	303	btcoex->bt_stomp_type);
0fca65c1 S	304
	305	spin_unlock_bh(&btcoex->btcoex_lock);
	306
	307	if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) {
	308	if (btcoex->hw_timer_enabled)
	309	ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
	310
58da1318 VT	311	timer_period = is_btscan ? btcoex->btscan_no_stomp :
58da1318 VT	312	btcoex->btcoex_no_stomp;
0fca65c1 S	313	ath9k_gen_timer_start(ah,
	314	btcoex->no_stomp_timer,
	315	(ath9k_hw_gettsf32(ah) +
58da1318	316	timer_period), timer_period * 10);
0fca65c1 S	317	btcoex->hw_timer_enabled = true;
	318	}
	319
	320	mod_timer(&btcoex->period_timer, jiffies +
	321	msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD));
	322	}
	323
	324	/*
	325	* Generic tsf based hw timer which configures weight
	326	* registers to time slice between wlan and bt traffic
	327	*/
	328	static void ath_btcoex_no_stomp_timer(void *arg)
	329	{
	330	struct ath_softc sc = (struct ath_softc )arg;
	331	struct ath_hw *ah = sc->sc_ah;
	332	struct ath_btcoex *btcoex = &sc->btcoex;
d99eeb87	333	struct ath_common *common = ath9k_hw_common(ah);
58da1318	334	bool is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
0fca65c1	335
d99eeb87	336	ath_print(common, ATH_DBG_BTCOEX,
60ece404	337	"no stomp timer running\n");
0fca65c1 S	338
	339	spin_lock_bh(&btcoex->btcoex_lock);
	340
58da1318	341	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW \|\| is_btscan)
d99eeb87	342	ath9k_cmn_btcoex_bt_stomp(common, ATH_BTCOEX_STOMP_NONE);
0fca65c1	343	else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
d99eeb87	344	ath9k_cmn_btcoex_bt_stomp(common, ATH_BTCOEX_STOMP_LOW);
0fca65c1 S	345
	346	spin_unlock_bh(&btcoex->btcoex_lock);
	347	}
	348
	349	int ath_init_btcoex_timer(struct ath_softc *sc)
	350	{
	351	struct ath_btcoex *btcoex = &sc->btcoex;
	352
	353	btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000;
	354	btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
	355	btcoex->btcoex_period / 100;
58da1318 VT	356	btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
58da1318 VT	357	btcoex->btcoex_period / 100;
0fca65c1 S	358
	359	setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
	360	(unsigned long) sc);
	361
	362	spin_lock_init(&btcoex->btcoex_lock);
	363
	364	btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah,
	365	ath_btcoex_no_stomp_timer,
	366	ath_btcoex_no_stomp_timer,
	367	(void *) sc, AR_FIRST_NDP_TIMER);
	368
	369	if (!btcoex->no_stomp_timer)
	370	return -ENOMEM;
	371
	372	return 0;
	373	}
	374
	375	/*
	376	* (Re)start btcoex timers
	377	*/
	378	void ath9k_btcoex_timer_resume(struct ath_softc *sc)
	379	{
	380	struct ath_btcoex *btcoex = &sc->btcoex;
	381	struct ath_hw *ah = sc->sc_ah;
	382
	383	ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
	384	"Starting btcoex timers");
	385
	386	/* make sure duty cycle timer is also stopped when resuming */
	387	if (btcoex->hw_timer_enabled)
	388	ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
	389
	390	btcoex->bt_priority_cnt = 0;
	391	btcoex->bt_priority_time = jiffies;
58da1318	392	sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED \| SC_OP_BT_SCAN);
0fca65c1 S	393
	394	mod_timer(&btcoex->period_timer, jiffies);
	395	}
	396
	397
	398	/*
	399	* Pause btcoex timer and bt duty cycle timer
	400	*/
	401	void ath9k_btcoex_timer_pause(struct ath_softc *sc)
	402	{
	403	struct ath_btcoex *btcoex = &sc->btcoex;
	404	struct ath_hw *ah = sc->sc_ah;
	405
	406	del_timer_sync(&btcoex->period_timer);
	407
	408	if (btcoex->hw_timer_enabled)
	409	ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
	410
	411	btcoex->hw_timer_enabled = false;
	412	}