[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;
			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);

	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:
	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))) {
		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;
		} else {
			sc->sc_flags &= ~SC_OP_BT_PRIORITY_DETECTED;
		}

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

/*
 * Configures appropriate weight based on stomp type.
 */
static void ath9k_btcoex_bt_stomp(struct ath_softc *sc,
				  enum ath_stomp_type stomp_type)
{
	struct ath_hw *ah = sc->sc_ah;

	switch (stomp_type) {
	case ATH_BTCOEX_STOMP_ALL:
		ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
					   AR_STOMP_ALL_WLAN_WGHT);
		break;
	case ATH_BTCOEX_STOMP_LOW:
		ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
					   AR_STOMP_LOW_WLAN_WGHT);
		break;
	case ATH_BTCOEX_STOMP_NONE:
		ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
					   AR_STOMP_NONE_WLAN_WGHT);
		break;
	default:
		ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
			  "Invalid Stomptype\n");
		break;
	}

	ath9k_hw_btcoex_enable(ah);
}

static void ath9k_gen_timer_start(struct ath_hw *ah,
				  struct ath_gen_timer *timer,
				  u32 timer_next,
				  u32 timer_period)
{
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath_softc *sc = (struct ath_softc *) common->priv;

	ath9k_hw_gen_timer_start(ah, timer, timer_next, timer_period);

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

static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
{
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath_softc *sc = (struct ath_softc *) common->priv;
	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_set_interrupts(ah, 0);
		sc->imask &= ~ATH9K_INT_GENTIMER;
		ath9k_hw_set_interrupts(ah, sc->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;

	ath_detect_bt_priority(sc);

	spin_lock_bh(&btcoex->btcoex_lock);

	ath9k_btcoex_bt_stomp(sc, 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);

		ath9k_gen_timer_start(ah,
				      btcoex->no_stomp_timer,
				      (ath9k_hw_gettsf32(ah) +
				       btcoex->btcoex_no_stomp),
				       btcoex->btcoex_no_stomp * 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;

	ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
		  "no stomp timer running \n");

	spin_lock_bh(&btcoex->btcoex_lock);

	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW)
		ath9k_btcoex_bt_stomp(sc, ATH_BTCOEX_STOMP_NONE);
	 else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
		ath9k_btcoex_bt_stomp(sc, 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;

	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;

	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;
79	ieee80211_queue_delayed_work(sc->hw,
80	&sc->ath_led_blink_work, 0);
81	} else if (led->led_type == ATH_LED_RADIO) {
82	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0);
83	sc->sc_flags \|= SC_OP_LED_ON;
84	} else {
85	sc->led_on_cnt++;
86	}
87	break;
88	default:
89	break;
90	}
91	}
92
93	static int ath_register_led(struct ath_softc sc, struct ath_led led,
94	char *trigger)
95	{
96	int ret;
97
98	led->sc = sc;
99	led->led_cdev.name = led->name;
100	led->led_cdev.default_trigger = trigger;
101	led->led_cdev.brightness_set = ath_led_brightness;
102
103	ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
104	if (ret)
105	ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
106	"Failed to register led:%s", led->name);
107	else
108	led->registered = 1;
109	return ret;
110	}
111
112	static void ath_unregister_led(struct ath_led *led)
113	{
114	if (led->registered) {
115	led_classdev_unregister(&led->led_cdev);
116	led->registered = 0;
117	}
118	}
119
120	void ath_deinit_leds(struct ath_softc *sc)
121	{
122	ath_unregister_led(&sc->assoc_led);
123	sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
124	ath_unregister_led(&sc->tx_led);
125	ath_unregister_led(&sc->rx_led);
126	ath_unregister_led(&sc->radio_led);
127	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
128	}
129
130	void ath_init_leds(struct ath_softc *sc)
131	{
132	char *trigger;
133	int ret;
134
135	if (AR_SREV_9287(sc->sc_ah))
136	sc->sc_ah->led_pin = ATH_LED_PIN_9287;
137	else
138	sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
139
140	/* Configure gpio 1 for output */
141	ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin,
142	AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
143	/* LED off, active low */
144	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
145
146	INIT_DELAYED_WORK(&sc->ath_led_blink_work, ath_led_blink_work);
147
148	trigger = ieee80211_get_radio_led_name(sc->hw);
149	snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
150	"ath9k-%s::radio", wiphy_name(sc->hw->wiphy));
151	ret = ath_register_led(sc, &sc->radio_led, trigger);
152	sc->radio_led.led_type = ATH_LED_RADIO;
153	if (ret)
154	goto fail;
155
156	trigger = ieee80211_get_assoc_led_name(sc->hw);
157	snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
158	"ath9k-%s::assoc", wiphy_name(sc->hw->wiphy));
159	ret = ath_register_led(sc, &sc->assoc_led, trigger);
160	sc->assoc_led.led_type = ATH_LED_ASSOC;
161	if (ret)
162	goto fail;
163
164	trigger = ieee80211_get_tx_led_name(sc->hw);
165	snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
166	"ath9k-%s::tx", wiphy_name(sc->hw->wiphy));
167	ret = ath_register_led(sc, &sc->tx_led, trigger);
168	sc->tx_led.led_type = ATH_LED_TX;
169	if (ret)
170	goto fail;
171
172	trigger = ieee80211_get_rx_led_name(sc->hw);
173	snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
174	"ath9k-%s::rx", wiphy_name(sc->hw->wiphy));
175	ret = ath_register_led(sc, &sc->rx_led, trigger);
176	sc->rx_led.led_type = ATH_LED_RX;
177	if (ret)
178	goto fail;
179
180	return;
181
182	fail:
183	cancel_delayed_work_sync(&sc->ath_led_blink_work);
184	ath_deinit_leds(sc);
185	}
186
187	/*******************/
188	/* Rfkill */
189	/*******************/
190
191	static bool ath_is_rfkill_set(struct ath_softc *sc)
192	{
193	struct ath_hw *ah = sc->sc_ah;
194
195	return ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
196	ah->rfkill_polarity;
197	}
198
199	void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
200	{
201	struct ath_wiphy *aphy = hw->priv;
202	struct ath_softc *sc = aphy->sc;
203	bool blocked = !!ath_is_rfkill_set(sc);
204
205	wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
206	}
207
208	void ath_start_rfkill_poll(struct ath_softc *sc)
209	{
210	struct ath_hw *ah = sc->sc_ah;
211
212	if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
213	wiphy_rfkill_start_polling(sc->hw->wiphy);
214	}
215
216	/******************/
217	/* BTCOEX */
218	/******************/
219
220	/*
221	* Detects if there is any priority bt traffic
222	*/
223	static void ath_detect_bt_priority(struct ath_softc *sc)
224	{
225	struct ath_btcoex *btcoex = &sc->btcoex;
226	struct ath_hw *ah = sc->sc_ah;
227
228	if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
229	btcoex->bt_priority_cnt++;
230
231	if (time_after(jiffies, btcoex->bt_priority_time +
232	msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
233	if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
234	ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
235	"BT priority traffic detected");
236	sc->sc_flags \|= SC_OP_BT_PRIORITY_DETECTED;
237	} else {
238	sc->sc_flags &= ~SC_OP_BT_PRIORITY_DETECTED;
239	}
240
241	btcoex->bt_priority_cnt = 0;
242	btcoex->bt_priority_time = jiffies;
243	}
244	}
245
246	/*
247	* Configures appropriate weight based on stomp type.
248	*/
249	static void ath9k_btcoex_bt_stomp(struct ath_softc *sc,
250	enum ath_stomp_type stomp_type)
251	{
252	struct ath_hw *ah = sc->sc_ah;
253
254	switch (stomp_type) {
255	case ATH_BTCOEX_STOMP_ALL:
256	ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
257	AR_STOMP_ALL_WLAN_WGHT);
258	break;
259	case ATH_BTCOEX_STOMP_LOW:
260	ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
261	AR_STOMP_LOW_WLAN_WGHT);
262	break;
263	case ATH_BTCOEX_STOMP_NONE:
264	ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
265	AR_STOMP_NONE_WLAN_WGHT);
266	break;
267	default:
268	ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
269	"Invalid Stomptype\n");
270	break;
271	}
272
273	ath9k_hw_btcoex_enable(ah);
274	}
275
276	static void ath9k_gen_timer_start(struct ath_hw *ah,
277	struct ath_gen_timer *timer,
278	u32 timer_next,
279	u32 timer_period)
280	{
281	struct ath_common *common = ath9k_hw_common(ah);
282	struct ath_softc sc = (struct ath_softc ) common->priv;
283
284	ath9k_hw_gen_timer_start(ah, timer, timer_next, timer_period);
285
286	if ((sc->imask & ATH9K_INT_GENTIMER) == 0) {
287	ath9k_hw_set_interrupts(ah, 0);
288	sc->imask \|= ATH9K_INT_GENTIMER;
289	ath9k_hw_set_interrupts(ah, sc->imask);
290	}
291	}
292
293	static void ath9k_gen_timer_stop(struct ath_hw ah, struct ath_gen_timer timer)
294	{
295	struct ath_common *common = ath9k_hw_common(ah);
296	struct ath_softc sc = (struct ath_softc ) common->priv;
297	struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
298
299	ath9k_hw_gen_timer_stop(ah, timer);
300
301	/* if no timer is enabled, turn off interrupt mask */
302	if (timer_table->timer_mask.val == 0) {
303	ath9k_hw_set_interrupts(ah, 0);
304	sc->imask &= ~ATH9K_INT_GENTIMER;
305	ath9k_hw_set_interrupts(ah, sc->imask);
306	}
307	}
308
309	/*
310	* This is the master bt coex timer which runs for every
311	* 45ms, bt traffic will be given priority during 55% of this
312	* period while wlan gets remaining 45%
313	*/
314	static void ath_btcoex_period_timer(unsigned long data)
315	{
316	struct ath_softc sc = (struct ath_softc ) data;
317	struct ath_hw *ah = sc->sc_ah;
318	struct ath_btcoex *btcoex = &sc->btcoex;
319
320	ath_detect_bt_priority(sc);
321
322	spin_lock_bh(&btcoex->btcoex_lock);
323
324	ath9k_btcoex_bt_stomp(sc, btcoex->bt_stomp_type);
325
326	spin_unlock_bh(&btcoex->btcoex_lock);
327
328	if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) {
329	if (btcoex->hw_timer_enabled)
330	ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
331
332	ath9k_gen_timer_start(ah,
333	btcoex->no_stomp_timer,
334	(ath9k_hw_gettsf32(ah) +
335	btcoex->btcoex_no_stomp),
336	btcoex->btcoex_no_stomp * 10);
337	btcoex->hw_timer_enabled = true;
338	}
339
340	mod_timer(&btcoex->period_timer, jiffies +
341	msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD));
342	}
343
344	/*
345	* Generic tsf based hw timer which configures weight
346	* registers to time slice between wlan and bt traffic
347	*/
348	static void ath_btcoex_no_stomp_timer(void *arg)
349	{
350	struct ath_softc sc = (struct ath_softc )arg;
351	struct ath_hw *ah = sc->sc_ah;
352	struct ath_btcoex *btcoex = &sc->btcoex;
353
354	ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
355	"no stomp timer running \n");
356
357	spin_lock_bh(&btcoex->btcoex_lock);
358
359	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW)
360	ath9k_btcoex_bt_stomp(sc, ATH_BTCOEX_STOMP_NONE);
361	else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
362	ath9k_btcoex_bt_stomp(sc, ATH_BTCOEX_STOMP_LOW);
363
364	spin_unlock_bh(&btcoex->btcoex_lock);
365	}
366
367	int ath_init_btcoex_timer(struct ath_softc *sc)
368	{
369	struct ath_btcoex *btcoex = &sc->btcoex;
370
371	btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000;
372	btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
373	btcoex->btcoex_period / 100;
374
375	setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
376	(unsigned long) sc);
377
378	spin_lock_init(&btcoex->btcoex_lock);
379
380	btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah,
381	ath_btcoex_no_stomp_timer,
382	ath_btcoex_no_stomp_timer,
383	(void *) sc, AR_FIRST_NDP_TIMER);
384
385	if (!btcoex->no_stomp_timer)
386	return -ENOMEM;
387
388	return 0;
389	}
390
391	/*
392	* (Re)start btcoex timers
393	*/
394	void ath9k_btcoex_timer_resume(struct ath_softc *sc)
395	{
396	struct ath_btcoex *btcoex = &sc->btcoex;
397	struct ath_hw *ah = sc->sc_ah;
398
399	ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
400	"Starting btcoex timers");
401
402	/* make sure duty cycle timer is also stopped when resuming */
403	if (btcoex->hw_timer_enabled)
404	ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
405
406	btcoex->bt_priority_cnt = 0;
407	btcoex->bt_priority_time = jiffies;
408	sc->sc_flags &= ~SC_OP_BT_PRIORITY_DETECTED;
409
410	mod_timer(&btcoex->period_timer, jiffies);
411	}
412
413
414	/*
415	* Pause btcoex timer and bt duty cycle timer
416	*/
417	void ath9k_btcoex_timer_pause(struct ath_softc *sc)
418	{
419	struct ath_btcoex *btcoex = &sc->btcoex;
420	struct ath_hw *ah = sc->sc_ah;
421
422	del_timer_sync(&btcoex->period_timer);
423
424	if (btcoex->hw_timer_enabled)
425	ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
426
427	btcoex->hw_timer_enabled = false;
428	}