[deliverable/linux.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
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);
	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, (brightness == LED_OFF));
}

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 (sc->sc_ah->led_pin < 0) {
		if (AR_SREV_9287(sc->sc_ah))
			sc->sc_ah->led_pin = ATH_LED_PIN_9287;
		else if (AR_SREV_9485(sc->sc_ah))
			sc->sc_ah->led_pin = ATH_LED_PIN_9485;
		else if (AR_SREV_9300(sc->sc_ah))
			sc->sc_ah->led_pin = ATH_LED_PIN_9300;
		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)
		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;

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

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);
}

/******************/
/*     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_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
				"BT scan detected\n");
			sc->sc_flags |= (SC_OP_BT_SCAN |
					 SC_OP_BT_PRIORITY_DETECTED);
		} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
			ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
				"BT priority traffic detected\n");
			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 trig_timeout,
				  u32 timer_period)
{
	ath9k_hw_gen_timer_start(ah, timer, trig_timeout, 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);
		ath9k_hw_enable_interrupts(ah);
	}
}

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);
		ath9k_hw_enable_interrupts(ah);
	}
}

/*
 * 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;
	u32 timer_period;
	bool is_btscan;

	ath9k_ps_wakeup(sc);
	ath_detect_bt_priority(sc);

	is_btscan = sc->sc_flags & SC_OP_BT_SCAN;

	spin_lock_bh(&btcoex->btcoex_lock);

	ath9k_hw_btcoex_bt_stomp(ah, 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, timer_period,
				      timer_period * 10);
		btcoex->hw_timer_enabled = true;
	}

	ath9k_ps_restore(sc);
	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_dbg(common, ATH_DBG_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 || is_btscan)
		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);

	spin_unlock_bh(&btcoex->btcoex_lock);
	ath9k_ps_restore(sc);
}

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_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
		"Starting btcoex timers\n");

	/* 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	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
0fca65c1 S	24	static void ath_led_brightness(struct led_classdev *led_cdev,
	25	enum led_brightness brightness)
	26	{
0cf55c21 FF	27	struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
0cf55c21 FF	28	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, (brightness == LED_OFF));
0fca65c1 S	29	}
	30
	31	void ath_deinit_leds(struct ath_softc *sc)
	32	{
0cf55c21 FF	33	if (!sc->led_registered)
	34	return;
	35
	36	ath_led_brightness(&sc->led_cdev, LED_OFF);
	37	led_classdev_unregister(&sc->led_cdev);
0fca65c1 S	38	}
	39
	40	void ath_init_leds(struct ath_softc *sc)
	41	{
0fca65c1 S	42	int ret;
0fca65c1 S	43
6de66dd9 FF	44	if (sc->sc_ah->led_pin < 0) {
	45	if (AR_SREV_9287(sc->sc_ah))
	46	sc->sc_ah->led_pin = ATH_LED_PIN_9287;
	47	else if (AR_SREV_9485(sc->sc_ah))
	48	sc->sc_ah->led_pin = ATH_LED_PIN_9485;
353e5019 SB	49	else if (AR_SREV_9300(sc->sc_ah))
353e5019 SB	50	sc->sc_ah->led_pin = ATH_LED_PIN_9300;
6de66dd9 FF	51	else
	52	sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
	53	}
0fca65c1 S	54
	55	/* Configure gpio 1 for output */
	56	ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin,
	57	AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	58	/* LED off, active low */
	59	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
	60
0cf55c21 FF	61	if (!led_blink)
	62	sc->led_cdev.default_trigger =
	63	ieee80211_get_radio_led_name(sc->hw);
	64
	65	snprintf(sc->led_name, sizeof(sc->led_name),
	66	"ath9k-%s", wiphy_name(sc->hw->wiphy));
	67	sc->led_cdev.name = sc->led_name;
	68	sc->led_cdev.brightness_set = ath_led_brightness;
	69
	70	ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
	71	if (ret < 0)
	72	return;
	73
	74	sc->led_registered = true;
0fca65c1	75	}
0cf55c21	76	#endif
0fca65c1 S	77
	78	/*******************/
	79	/* Rfkill */
	80	/*******************/
	81
	82	static bool ath_is_rfkill_set(struct ath_softc *sc)
	83	{
	84	struct ath_hw *ah = sc->sc_ah;
	85
	86	return ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
	87	ah->rfkill_polarity;
	88	}
	89
	90	void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
	91	{
9ac58615	92	struct ath_softc *sc = hw->priv;
0fca65c1 S	93	bool blocked = !!ath_is_rfkill_set(sc);
	94
	95	wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
	96	}
	97
	98	void ath_start_rfkill_poll(struct ath_softc *sc)
	99	{
	100	struct ath_hw *ah = sc->sc_ah;
	101
	102	if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
	103	wiphy_rfkill_start_polling(sc->hw->wiphy);
	104	}
	105
	106	/******************/
	107	/* BTCOEX */
	108	/******************/
	109
	110	/*
	111	* Detects if there is any priority bt traffic
	112	*/
	113	static void ath_detect_bt_priority(struct ath_softc *sc)
	114	{
	115	struct ath_btcoex *btcoex = &sc->btcoex;
	116	struct ath_hw *ah = sc->sc_ah;
	117
	118	if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
	119	btcoex->bt_priority_cnt++;
	120
	121	if (time_after(jiffies, btcoex->bt_priority_time +
	122	msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
58da1318 VT	123	sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED \| SC_OP_BT_SCAN);
	124	/* Detect if colocated bt started scanning */
	125	if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
226afe68 JP	126	ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
226afe68 JP	127	"BT scan detected\n");
58da1318 VT	128	sc->sc_flags \|= (SC_OP_BT_SCAN \|
	129	SC_OP_BT_PRIORITY_DETECTED);
	130	} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
226afe68 JP	131	ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
226afe68 JP	132	"BT priority traffic detected\n");
0fca65c1	133	sc->sc_flags \|= SC_OP_BT_PRIORITY_DETECTED;
0fca65c1 S	134	}
	135
	136	btcoex->bt_priority_cnt = 0;
	137	btcoex->bt_priority_time = jiffies;
	138	}
	139	}
	140
0fca65c1 S	141	static void ath9k_gen_timer_start(struct ath_hw *ah,
0fca65c1 S	142	struct ath_gen_timer *timer,
788f6875	143	u32 trig_timeout,
0fca65c1 S	144	u32 timer_period)
0fca65c1 S	145	{
788f6875	146	ath9k_hw_gen_timer_start(ah, timer, trig_timeout, timer_period);
0fca65c1	147
3069168c	148	if ((ah->imask & ATH9K_INT_GENTIMER) == 0) {
4df3071e	149	ath9k_hw_disable_interrupts(ah);
3069168c PR	150	ah->imask \|= ATH9K_INT_GENTIMER;
3069168c PR	151	ath9k_hw_set_interrupts(ah, ah->imask);
b037b693	152	ath9k_hw_enable_interrupts(ah);
0fca65c1 S	153	}
	154	}
	155
	156	static void ath9k_gen_timer_stop(struct ath_hw ah, struct ath_gen_timer timer)
	157	{
0fca65c1 S	158	struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
	159
	160	ath9k_hw_gen_timer_stop(ah, timer);
	161
	162	/* if no timer is enabled, turn off interrupt mask */
	163	if (timer_table->timer_mask.val == 0) {
4df3071e	164	ath9k_hw_disable_interrupts(ah);
3069168c PR	165	ah->imask &= ~ATH9K_INT_GENTIMER;
3069168c PR	166	ath9k_hw_set_interrupts(ah, ah->imask);
b037b693	167	ath9k_hw_enable_interrupts(ah);
0fca65c1 S	168	}
	169	}
	170
	171	/*
	172	* This is the master bt coex timer which runs for every
	173	* 45ms, bt traffic will be given priority during 55% of this
	174	* period while wlan gets remaining 45%
	175	*/
	176	static void ath_btcoex_period_timer(unsigned long data)
	177	{
	178	struct ath_softc sc = (struct ath_softc ) data;
	179	struct ath_hw *ah = sc->sc_ah;
	180	struct ath_btcoex *btcoex = &sc->btcoex;
58da1318 VT	181	u32 timer_period;
58da1318 VT	182	bool is_btscan;
0fca65c1	183
a039a993	184	ath9k_ps_wakeup(sc);
0fca65c1 S	185	ath_detect_bt_priority(sc);
0fca65c1 S	186
58da1318 VT	187	is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
58da1318 VT	188
0fca65c1 S	189	spin_lock_bh(&btcoex->btcoex_lock);
0fca65c1 S	190
978f78bf	191	ath9k_hw_btcoex_bt_stomp(ah, is_btscan ? ATH_BTCOEX_STOMP_ALL :
58da1318	192	btcoex->bt_stomp_type);
0fca65c1 S	193
	194	spin_unlock_bh(&btcoex->btcoex_lock);
	195
	196	if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) {
	197	if (btcoex->hw_timer_enabled)
	198	ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
	199
58da1318 VT	200	timer_period = is_btscan ? btcoex->btscan_no_stomp :
58da1318 VT	201	btcoex->btcoex_no_stomp;
788f6875	202	ath9k_gen_timer_start(ah, btcoex->no_stomp_timer, timer_period,
8eb1dabb	203	timer_period * 10);
0fca65c1 S	204	btcoex->hw_timer_enabled = true;
	205	}
	206
a039a993	207	ath9k_ps_restore(sc);
0fca65c1 S	208	mod_timer(&btcoex->period_timer, jiffies +
	209	msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD));
	210	}
	211
	212	/*
	213	* Generic tsf based hw timer which configures weight
	214	* registers to time slice between wlan and bt traffic
	215	*/
	216	static void ath_btcoex_no_stomp_timer(void *arg)
	217	{
	218	struct ath_softc sc = (struct ath_softc )arg;
	219	struct ath_hw *ah = sc->sc_ah;
	220	struct ath_btcoex *btcoex = &sc->btcoex;
d99eeb87	221	struct ath_common *common = ath9k_hw_common(ah);
58da1318	222	bool is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
0fca65c1	223
226afe68 JP	224	ath_dbg(common, ATH_DBG_BTCOEX,
226afe68 JP	225	"no stomp timer running\n");
0fca65c1	226
a039a993	227	ath9k_ps_wakeup(sc);
0fca65c1 S	228	spin_lock_bh(&btcoex->btcoex_lock);
0fca65c1 S	229
58da1318	230	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW \|\| is_btscan)
978f78bf	231	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
0fca65c1	232	else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
978f78bf	233	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
0fca65c1 S	234
0fca65c1 S	235	spin_unlock_bh(&btcoex->btcoex_lock);
a039a993	236	ath9k_ps_restore(sc);
0fca65c1 S	237	}
	238
	239	int ath_init_btcoex_timer(struct ath_softc *sc)
	240	{
	241	struct ath_btcoex *btcoex = &sc->btcoex;
	242
	243	btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000;
	244	btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
	245	btcoex->btcoex_period / 100;
58da1318 VT	246	btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
58da1318 VT	247	btcoex->btcoex_period / 100;
0fca65c1 S	248
	249	setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
	250	(unsigned long) sc);
	251
	252	spin_lock_init(&btcoex->btcoex_lock);
	253
	254	btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah,
	255	ath_btcoex_no_stomp_timer,
	256	ath_btcoex_no_stomp_timer,
	257	(void *) sc, AR_FIRST_NDP_TIMER);
	258
	259	if (!btcoex->no_stomp_timer)
	260	return -ENOMEM;
	261
	262	return 0;
	263	}
	264
	265	/*
	266	* (Re)start btcoex timers
	267	*/
	268	void ath9k_btcoex_timer_resume(struct ath_softc *sc)
	269	{
	270	struct ath_btcoex *btcoex = &sc->btcoex;
	271	struct ath_hw *ah = sc->sc_ah;
	272
226afe68 JP	273	ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
226afe68 JP	274	"Starting btcoex timers\n");
0fca65c1 S	275
	276	/* make sure duty cycle timer is also stopped when resuming */
	277	if (btcoex->hw_timer_enabled)
	278	ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
	279
	280	btcoex->bt_priority_cnt = 0;
	281	btcoex->bt_priority_time = jiffies;
58da1318	282	sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED \| SC_OP_BT_SCAN);
0fca65c1 S	283
	284	mod_timer(&btcoex->period_timer, jiffies);
	285	}
	286
	287
	288	/*
	289	* Pause btcoex timer and bt duty cycle timer
	290	*/
	291	void ath9k_btcoex_timer_pause(struct ath_softc *sc)
	292	{
	293	struct ath_btcoex *btcoex = &sc->btcoex;
	294	struct ath_hw *ah = sc->sc_ah;
	295
	296	del_timer_sync(&btcoex->period_timer);
	297
	298	if (btcoex->hw_timer_enabled)
	299	ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
	300
	301	btcoex->hw_timer_enabled = false;
	302	}