[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 if (AR_SREV_9462(sc->sc_ah))
			sc->sc_ah->led_pin = ATH_LED_PIN_9462;
		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;
	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);
}

/******************/
/*     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);
		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);
		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;
423e38e8 RM	51	else if (AR_SREV_9462(sc->sc_ah))
423e38e8 RM	52	sc->sc_ah->led_pin = ATH_LED_PIN_9462;
6de66dd9 FF	53	else
	54	sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
	55	}
0fca65c1 S	56
	57	/* Configure gpio 1 for output */
	58	ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin,
	59	AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	60	/* LED off, active low */
	61	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
	62
0cf55c21 FF	63	if (!led_blink)
	64	sc->led_cdev.default_trigger =
	65	ieee80211_get_radio_led_name(sc->hw);
	66
	67	snprintf(sc->led_name, sizeof(sc->led_name),
	68	"ath9k-%s", wiphy_name(sc->hw->wiphy));
	69	sc->led_cdev.name = sc->led_name;
	70	sc->led_cdev.brightness_set = ath_led_brightness;
	71
	72	ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
	73	if (ret < 0)
	74	return;
	75
	76	sc->led_registered = true;
0fca65c1	77	}
0cf55c21	78	#endif
0fca65c1 S	79
	80	/*******************/
	81	/* Rfkill */
	82	/*******************/
	83
	84	static bool ath_is_rfkill_set(struct ath_softc *sc)
	85	{
	86	struct ath_hw *ah = sc->sc_ah;
90826313	87	bool is_blocked;
0fca65c1	88
90826313 MSS	89	ath9k_ps_wakeup(sc);
90826313 MSS	90	is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
0fca65c1	91	ah->rfkill_polarity;
90826313 MSS	92	ath9k_ps_restore(sc);
	93
	94	return is_blocked;
0fca65c1 S	95	}
	96
	97	void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
	98	{
9ac58615	99	struct ath_softc *sc = hw->priv;
0fca65c1 S	100	bool blocked = !!ath_is_rfkill_set(sc);
	101
	102	wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
	103	}
	104
	105	void ath_start_rfkill_poll(struct ath_softc *sc)
	106	{
	107	struct ath_hw *ah = sc->sc_ah;
	108
	109	if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
	110	wiphy_rfkill_start_polling(sc->hw->wiphy);
	111	}
	112
	113	/******************/
	114	/* BTCOEX */
	115	/******************/
	116
	117	/*
	118	* Detects if there is any priority bt traffic
	119	*/
	120	static void ath_detect_bt_priority(struct ath_softc *sc)
	121	{
	122	struct ath_btcoex *btcoex = &sc->btcoex;
	123	struct ath_hw *ah = sc->sc_ah;
	124
	125	if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
	126	btcoex->bt_priority_cnt++;
	127
	128	if (time_after(jiffies, btcoex->bt_priority_time +
	129	msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
58da1318 VT	130	sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED \| SC_OP_BT_SCAN);
	131	/* Detect if colocated bt started scanning */
	132	if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
226afe68 JP	133	ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
226afe68 JP	134	"BT scan detected\n");
58da1318 VT	135	sc->sc_flags \|= (SC_OP_BT_SCAN \|
	136	SC_OP_BT_PRIORITY_DETECTED);
	137	} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
226afe68 JP	138	ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
226afe68 JP	139	"BT priority traffic detected\n");
0fca65c1	140	sc->sc_flags \|= SC_OP_BT_PRIORITY_DETECTED;
0fca65c1 S	141	}
	142
	143	btcoex->bt_priority_cnt = 0;
	144	btcoex->bt_priority_time = jiffies;
	145	}
	146	}
	147
0fca65c1 S	148	static void ath9k_gen_timer_start(struct ath_hw *ah,
0fca65c1 S	149	struct ath_gen_timer *timer,
788f6875	150	u32 trig_timeout,
0fca65c1 S	151	u32 timer_period)
0fca65c1 S	152	{
788f6875	153	ath9k_hw_gen_timer_start(ah, timer, trig_timeout, timer_period);
0fca65c1	154
3069168c	155	if ((ah->imask & ATH9K_INT_GENTIMER) == 0) {
4df3071e	156	ath9k_hw_disable_interrupts(ah);
3069168c	157	ah->imask \|= ATH9K_INT_GENTIMER;
72d874c6	158	ath9k_hw_set_interrupts(ah);
b037b693	159	ath9k_hw_enable_interrupts(ah);
0fca65c1 S	160	}
	161	}
	162
	163	static void ath9k_gen_timer_stop(struct ath_hw ah, struct ath_gen_timer timer)
	164	{
0fca65c1 S	165	struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
	166
	167	ath9k_hw_gen_timer_stop(ah, timer);
	168
	169	/* if no timer is enabled, turn off interrupt mask */
	170	if (timer_table->timer_mask.val == 0) {
4df3071e	171	ath9k_hw_disable_interrupts(ah);
3069168c	172	ah->imask &= ~ATH9K_INT_GENTIMER;
72d874c6	173	ath9k_hw_set_interrupts(ah);
b037b693	174	ath9k_hw_enable_interrupts(ah);
0fca65c1 S	175	}
	176	}
	177
	178	/*
	179	* This is the master bt coex timer which runs for every
	180	* 45ms, bt traffic will be given priority during 55% of this
	181	* period while wlan gets remaining 45%
	182	*/
	183	static void ath_btcoex_period_timer(unsigned long data)
	184	{
	185	struct ath_softc sc = (struct ath_softc ) data;
	186	struct ath_hw *ah = sc->sc_ah;
	187	struct ath_btcoex *btcoex = &sc->btcoex;
58da1318 VT	188	u32 timer_period;
58da1318 VT	189	bool is_btscan;
0fca65c1	190
a039a993	191	ath9k_ps_wakeup(sc);
0fca65c1 S	192	ath_detect_bt_priority(sc);
0fca65c1 S	193
58da1318 VT	194	is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
58da1318 VT	195
0fca65c1 S	196	spin_lock_bh(&btcoex->btcoex_lock);
0fca65c1 S	197
978f78bf	198	ath9k_hw_btcoex_bt_stomp(ah, is_btscan ? ATH_BTCOEX_STOMP_ALL :
58da1318	199	btcoex->bt_stomp_type);
0fca65c1 S	200
	201	spin_unlock_bh(&btcoex->btcoex_lock);
	202
	203	if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) {
	204	if (btcoex->hw_timer_enabled)
	205	ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
	206
58da1318 VT	207	timer_period = is_btscan ? btcoex->btscan_no_stomp :
58da1318 VT	208	btcoex->btcoex_no_stomp;
788f6875	209	ath9k_gen_timer_start(ah, btcoex->no_stomp_timer, timer_period,
8eb1dabb	210	timer_period * 10);
0fca65c1 S	211	btcoex->hw_timer_enabled = true;
	212	}
	213
a039a993	214	ath9k_ps_restore(sc);
0fca65c1 S	215	mod_timer(&btcoex->period_timer, jiffies +
	216	msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD));
	217	}
	218
	219	/*
	220	* Generic tsf based hw timer which configures weight
	221	* registers to time slice between wlan and bt traffic
	222	*/
	223	static void ath_btcoex_no_stomp_timer(void *arg)
	224	{
	225	struct ath_softc sc = (struct ath_softc )arg;
	226	struct ath_hw *ah = sc->sc_ah;
	227	struct ath_btcoex *btcoex = &sc->btcoex;
d99eeb87	228	struct ath_common *common = ath9k_hw_common(ah);
58da1318	229	bool is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
0fca65c1	230
226afe68 JP	231	ath_dbg(common, ATH_DBG_BTCOEX,
226afe68 JP	232	"no stomp timer running\n");
0fca65c1	233
a039a993	234	ath9k_ps_wakeup(sc);
0fca65c1 S	235	spin_lock_bh(&btcoex->btcoex_lock);
0fca65c1 S	236
58da1318	237	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW \|\| is_btscan)
978f78bf	238	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
0fca65c1	239	else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
978f78bf	240	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
0fca65c1 S	241
0fca65c1 S	242	spin_unlock_bh(&btcoex->btcoex_lock);
a039a993	243	ath9k_ps_restore(sc);
0fca65c1 S	244	}
	245
	246	int ath_init_btcoex_timer(struct ath_softc *sc)
	247	{
	248	struct ath_btcoex *btcoex = &sc->btcoex;
	249
	250	btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000;
	251	btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
	252	btcoex->btcoex_period / 100;
58da1318 VT	253	btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
58da1318 VT	254	btcoex->btcoex_period / 100;
0fca65c1 S	255
	256	setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
	257	(unsigned long) sc);
	258
	259	spin_lock_init(&btcoex->btcoex_lock);
	260
	261	btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah,
	262	ath_btcoex_no_stomp_timer,
	263	ath_btcoex_no_stomp_timer,
	264	(void *) sc, AR_FIRST_NDP_TIMER);
	265
	266	if (!btcoex->no_stomp_timer)
	267	return -ENOMEM;
	268
	269	return 0;
	270	}
	271
	272	/*
	273	* (Re)start btcoex timers
	274	*/
	275	void ath9k_btcoex_timer_resume(struct ath_softc *sc)
	276	{
	277	struct ath_btcoex *btcoex = &sc->btcoex;
	278	struct ath_hw *ah = sc->sc_ah;
	279
226afe68 JP	280	ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
226afe68 JP	281	"Starting btcoex timers\n");
0fca65c1 S	282
	283	/* make sure duty cycle timer is also stopped when resuming */
	284	if (btcoex->hw_timer_enabled)
	285	ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
	286
	287	btcoex->bt_priority_cnt = 0;
	288	btcoex->bt_priority_time = jiffies;
58da1318	289	sc->sc_flags &= ~(SC_OP_BT_PRIORITY_DETECTED \| SC_OP_BT_SCAN);
0fca65c1 S	290
	291	mod_timer(&btcoex->period_timer, jiffies);
	292	}
	293
	294
	295	/*
	296	* Pause btcoex timer and bt duty cycle timer
	297	*/
	298	void ath9k_btcoex_timer_pause(struct ath_softc *sc)
	299	{
	300	struct ath_btcoex *btcoex = &sc->btcoex;
	301	struct ath_hw *ah = sc->sc_ah;
	302
	303	del_timer_sync(&btcoex->period_timer);
	304
	305	if (btcoex->hw_timer_enabled)
	306	ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
	307
	308	btcoex->hw_timer_enabled = false;
	309	}