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

/*
 * Copyright (c) 2010-2011 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 "htc.h"

/******************/
/*     BTCOEX     */
/******************/

#define ATH_HTC_BTCOEX_PRODUCT_ID "wb193"

#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT

/*
 * Detects if there is any priority bt traffic
 */
static void ath_detect_bt_priority(struct ath9k_htc_priv *priv)
{
	struct ath_btcoex *btcoex = &priv->btcoex;
	struct ath_hw *ah = priv->ah;

	if (ath9k_hw_gpio_get(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(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
		clear_bit(OP_BT_SCAN, &priv->op_flags);
		/* Detect if colocated bt started scanning */
		if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
			ath_dbg(ath9k_hw_common(ah), BTCOEX,
				"BT scan detected\n");
			set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
			set_bit(OP_BT_SCAN, &priv->op_flags);
		} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
			ath_dbg(ath9k_hw_common(ah), BTCOEX,
				"BT priority traffic detected\n");
			set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
		}

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

/*
 * This is the master bt coex work 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_work(struct work_struct *work)
{
	struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
						   coex_period_work.work);
	struct ath_btcoex *btcoex = &priv->btcoex;
	struct ath_common *common = ath9k_hw_common(priv->ah);
	u32 timer_period;
	int ret;

	ath_detect_bt_priority(priv);

	ret = ath9k_htc_update_cap_target(priv,
			  test_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags));
	if (ret) {
		ath_err(common, "Unable to set BTCOEX parameters\n");
		return;
	}

	ath9k_hw_btcoex_bt_stomp(priv->ah, test_bit(OP_BT_SCAN, &priv->op_flags) ?
				 ATH_BTCOEX_STOMP_ALL : btcoex->bt_stomp_type);

	ath9k_hw_btcoex_enable(priv->ah);
	timer_period = test_bit(OP_BT_SCAN, &priv->op_flags) ?
		btcoex->btscan_no_stomp : btcoex->btcoex_no_stomp;
	ieee80211_queue_delayed_work(priv->hw, &priv->duty_cycle_work,
				     msecs_to_jiffies(timer_period));
	ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work,
				     msecs_to_jiffies(btcoex->btcoex_period));
}

/*
 * Work to time slice between wlan and bt traffic and
 * configure weight registers
 */
static void ath_btcoex_duty_cycle_work(struct work_struct *work)
{
	struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
						   duty_cycle_work.work);
	struct ath_hw *ah = priv->ah;
	struct ath_btcoex *btcoex = &priv->btcoex;
	struct ath_common *common = ath9k_hw_common(ah);

	ath_dbg(common, BTCOEX, "time slice work for bt and wlan\n");

	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW ||
	    test_bit(OP_BT_SCAN, &priv->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(priv->ah);
}

static void ath_htc_init_btcoex_work(struct ath9k_htc_priv *priv)
{
	struct ath_btcoex *btcoex = &priv->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;
	INIT_DELAYED_WORK(&priv->coex_period_work, ath_btcoex_period_work);
	INIT_DELAYED_WORK(&priv->duty_cycle_work, ath_btcoex_duty_cycle_work);
}

/*
 * (Re)start btcoex work
 */

static void ath_htc_resume_btcoex_work(struct ath9k_htc_priv *priv)
{
	struct ath_btcoex *btcoex = &priv->btcoex;
	struct ath_hw *ah = priv->ah;

	ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex work\n");

	btcoex->bt_priority_cnt = 0;
	btcoex->bt_priority_time = jiffies;
	clear_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
	clear_bit(OP_BT_SCAN, &priv->op_flags);
	ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, 0);
}


/*
 * Cancel btcoex and bt duty cycle work.
 */
static void ath_htc_cancel_btcoex_work(struct ath9k_htc_priv *priv)
{
	cancel_delayed_work_sync(&priv->coex_period_work);
	cancel_delayed_work_sync(&priv->duty_cycle_work);
}

void ath9k_htc_start_btcoex(struct ath9k_htc_priv *priv)
{
	struct ath_hw *ah = priv->ah;

	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) {
		ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
					   AR_STOMP_LOW_WLAN_WGHT);
		ath9k_hw_btcoex_enable(ah);
		ath_htc_resume_btcoex_work(priv);
	}
}

void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv)
{
	struct ath_hw *ah = priv->ah;

	if (ah->btcoex_hw.enabled &&
	    ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
		ath9k_hw_btcoex_disable(ah);
		if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
			ath_htc_cancel_btcoex_work(priv);
	}
}

void ath9k_htc_init_btcoex(struct ath9k_htc_priv *priv, char *product)
{
	struct ath_hw *ah = priv->ah;
	int qnum;

	if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) {
		ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE;
	}

	switch (ath9k_hw_get_btcoex_scheme(priv->ah)) {
	case ATH_BTCOEX_CFG_NONE:
		break;
	case ATH_BTCOEX_CFG_3WIRE:
		priv->ah->btcoex_hw.btactive_gpio = 7;
		priv->ah->btcoex_hw.btpriority_gpio = 6;
		priv->ah->btcoex_hw.wlanactive_gpio = 8;
		priv->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
		ath9k_hw_btcoex_init_3wire(priv->ah);
		ath_htc_init_btcoex_work(priv);
		qnum = priv->hwq_map[WME_AC_BE];
		ath9k_hw_init_btcoex_hw(priv->ah, qnum);
		break;
	default:
		WARN_ON(1);
		break;
	}
}

#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */

/*******/
/* LED */
/*******/

#ifdef CONFIG_MAC80211_LEDS
void ath9k_led_work(struct work_struct *work)
{
	struct ath9k_htc_priv *priv = container_of(work,
						   struct ath9k_htc_priv,
						   led_work);

	ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
			  (priv->brightness == LED_OFF));
}

static void ath9k_led_brightness(struct led_classdev *led_cdev,
				 enum led_brightness brightness)
{
	struct ath9k_htc_priv *priv = container_of(led_cdev,
						   struct ath9k_htc_priv,
						   led_cdev);

	/* Not locked, but it's just a tiny green light..*/
	priv->brightness = brightness;
	ieee80211_queue_work(priv->hw, &priv->led_work);
}

void ath9k_deinit_leds(struct ath9k_htc_priv *priv)
{
	if (!priv->led_registered)
		return;

	ath9k_led_brightness(&priv->led_cdev, LED_OFF);
	led_classdev_unregister(&priv->led_cdev);
	cancel_work_sync(&priv->led_work);
}

void ath9k_init_leds(struct ath9k_htc_priv *priv)
{
	int ret;

	if (AR_SREV_9287(priv->ah))
		priv->ah->led_pin = ATH_LED_PIN_9287;
	else if (AR_SREV_9271(priv->ah))
		priv->ah->led_pin = ATH_LED_PIN_9271;
	else if (AR_DEVID_7010(priv->ah))
		priv->ah->led_pin = ATH_LED_PIN_7010;
	else
		priv->ah->led_pin = ATH_LED_PIN_DEF;

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

	snprintf(priv->led_name, sizeof(priv->led_name),
		"ath9k_htc-%s", wiphy_name(priv->hw->wiphy));
	priv->led_cdev.name = priv->led_name;
	priv->led_cdev.brightness_set = ath9k_led_brightness;

	ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &priv->led_cdev);
	if (ret < 0)
		return;

	INIT_WORK(&priv->led_work, ath9k_led_work);
	priv->led_registered = true;

	return;
}
#endif

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

static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv)
{
	bool is_blocked;

	ath9k_htc_ps_wakeup(priv);
	is_blocked = ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) ==
						 priv->ah->rfkill_polarity;
	ath9k_htc_ps_restore(priv);

	return is_blocked;
}

void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw)
{
	struct ath9k_htc_priv *priv = hw->priv;
	bool blocked = !!ath_is_rfkill_set(priv);

	wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
}

void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv)
{
	if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
		wiphy_rfkill_start_polling(priv->hw->wiphy);
}
Commit	Line	Data
1e1f4ad2	1	/*
5b68138e	2	* Copyright (c) 2010-2011 Atheros Communications Inc.
1e1f4ad2 SM	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
21cb9879 VN	17	#include "htc.h"
	18
	19	/******************/
	20	/* BTCOEX */
	21	/******************/
	22
cee5341d SM	23	#define ATH_HTC_BTCOEX_PRODUCT_ID "wb193"
cee5341d SM	24
9d5b80fd SM	25	#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
9d5b80fd SM	26
21cb9879 VN	27	/*
	28	* Detects if there is any priority bt traffic
	29	*/
	30	static void ath_detect_bt_priority(struct ath9k_htc_priv *priv)
	31	{
	32	struct ath_btcoex *btcoex = &priv->btcoex;
	33	struct ath_hw *ah = priv->ah;
	34
	35	if (ath9k_hw_gpio_get(ah, ah->btcoex_hw.btpriority_gpio))
	36	btcoex->bt_priority_cnt++;
	37
	38	if (time_after(jiffies, btcoex->bt_priority_time +
	39	msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
d8a2c51c SM	40	clear_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
d8a2c51c SM	41	clear_bit(OP_BT_SCAN, &priv->op_flags);
21cb9879 VN	42	/* Detect if colocated bt started scanning */
21cb9879 VN	43	if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
d2182b69	44	ath_dbg(ath9k_hw_common(ah), BTCOEX,
226afe68	45	"BT scan detected\n");
d8a2c51c SM	46	set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
d8a2c51c SM	47	set_bit(OP_BT_SCAN, &priv->op_flags);
21cb9879	48	} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
d2182b69	49	ath_dbg(ath9k_hw_common(ah), BTCOEX,
226afe68	50	"BT priority traffic detected\n");
d8a2c51c	51	set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
21cb9879 VN	52	}
	53
	54	btcoex->bt_priority_cnt = 0;
	55	btcoex->bt_priority_time = jiffies;
	56	}
	57	}
	58
	59	/*
	60	* This is the master bt coex work which runs for every
	61	* 45ms, bt traffic will be given priority during 55% of this
	62	* period while wlan gets remaining 45%
	63	*/
	64	static void ath_btcoex_period_work(struct work_struct *work)
	65	{
	66	struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
	67	coex_period_work.work);
	68	struct ath_btcoex *btcoex = &priv->btcoex;
	69	struct ath_common *common = ath9k_hw_common(priv->ah);
	70	u32 timer_period;
21cb9879	71	int ret;
21cb9879 VN	72
	73	ath_detect_bt_priority(priv);
	74
3a0593ef	75	ret = ath9k_htc_update_cap_target(priv,
d8a2c51c	76	test_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags));
0ff2b5c0 SM	77	if (ret) {
	78	ath_err(common, "Unable to set BTCOEX parameters\n");
	79	return;
	80	}
21cb9879	81
d8a2c51c SM	82	ath9k_hw_btcoex_bt_stomp(priv->ah, test_bit(OP_BT_SCAN, &priv->op_flags) ?
d8a2c51c SM	83	ATH_BTCOEX_STOMP_ALL : btcoex->bt_stomp_type);
21cb9879	84
bc6d5c29	85	ath9k_hw_btcoex_enable(priv->ah);
d8a2c51c SM	86	timer_period = test_bit(OP_BT_SCAN, &priv->op_flags) ?
d8a2c51c SM	87	btcoex->btscan_no_stomp : btcoex->btcoex_no_stomp;
21cb9879 VN	88	ieee80211_queue_delayed_work(priv->hw, &priv->duty_cycle_work,
	89	msecs_to_jiffies(timer_period));
	90	ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work,
	91	msecs_to_jiffies(btcoex->btcoex_period));
	92	}
	93
	94	/*
	95	* Work to time slice between wlan and bt traffic and
	96	* configure weight registers
	97	*/
	98	static void ath_btcoex_duty_cycle_work(struct work_struct *work)
	99	{
	100	struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
	101	duty_cycle_work.work);
	102	struct ath_hw *ah = priv->ah;
	103	struct ath_btcoex *btcoex = &priv->btcoex;
	104	struct ath_common *common = ath9k_hw_common(ah);
21cb9879	105
d2182b69	106	ath_dbg(common, BTCOEX, "time slice work for bt and wlan\n");
21cb9879	107
d8a2c51c SM	108	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW \|\|
d8a2c51c SM	109	test_bit(OP_BT_SCAN, &priv->op_flags))
978f78bf	110	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
21cb9879	111	else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
978f78bf	112	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
d8a2c51c	113
bc6d5c29	114	ath9k_hw_btcoex_enable(priv->ah);
21cb9879 VN	115	}
21cb9879 VN	116
9d5b80fd	117	static void ath_htc_init_btcoex_work(struct ath9k_htc_priv *priv)
21cb9879 VN	118	{
	119	struct ath_btcoex *btcoex = &priv->btcoex;
	120
	121	btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD;
	122	btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
	123	btcoex->btcoex_period / 100;
	124	btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
	125	btcoex->btcoex_period / 100;
	126	INIT_DELAYED_WORK(&priv->coex_period_work, ath_btcoex_period_work);
	127	INIT_DELAYED_WORK(&priv->duty_cycle_work, ath_btcoex_duty_cycle_work);
	128	}
	129
	130	/*
	131	* (Re)start btcoex work
	132	*/
	133
9d5b80fd	134	static void ath_htc_resume_btcoex_work(struct ath9k_htc_priv *priv)
21cb9879 VN	135	{
	136	struct ath_btcoex *btcoex = &priv->btcoex;
	137	struct ath_hw *ah = priv->ah;
	138
d2182b69	139	ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex work\n");
21cb9879 VN	140
	141	btcoex->bt_priority_cnt = 0;
	142	btcoex->bt_priority_time = jiffies;
d8a2c51c SM	143	clear_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
d8a2c51c SM	144	clear_bit(OP_BT_SCAN, &priv->op_flags);
21cb9879 VN	145	ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, 0);
	146	}
	147
	148
	149	/*
	150	* Cancel btcoex and bt duty cycle work.
	151	*/
9d5b80fd	152	static void ath_htc_cancel_btcoex_work(struct ath9k_htc_priv *priv)
21cb9879 VN	153	{
	154	cancel_delayed_work_sync(&priv->coex_period_work);
	155	cancel_delayed_work_sync(&priv->duty_cycle_work);
	156	}
1e1f4ad2	157
bf047fcd SM	158	void ath9k_htc_start_btcoex(struct ath9k_htc_priv *priv)
	159	{
	160	struct ath_hw *ah = priv->ah;
	161
	162	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) {
	163	ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
	164	AR_STOMP_LOW_WLAN_WGHT);
	165	ath9k_hw_btcoex_enable(ah);
	166	ath_htc_resume_btcoex_work(priv);
	167	}
	168	}
	169
	170	void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv)
	171	{
	172	struct ath_hw *ah = priv->ah;
	173
	174	if (ah->btcoex_hw.enabled &&
	175	ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
	176	ath9k_hw_btcoex_disable(ah);
	177	if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
	178	ath_htc_cancel_btcoex_work(priv);
	179	}
	180	}
	181
cee5341d SM	182	void ath9k_htc_init_btcoex(struct ath9k_htc_priv priv, char product)
	183	{
	184	struct ath_hw *ah = priv->ah;
	185	int qnum;
	186
	187	if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) {
	188	ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE;
cee5341d SM	189	}
	190
	191	switch (ath9k_hw_get_btcoex_scheme(priv->ah)) {
	192	case ATH_BTCOEX_CFG_NONE:
	193	break;
	194	case ATH_BTCOEX_CFG_3WIRE:
	195	priv->ah->btcoex_hw.btactive_gpio = 7;
	196	priv->ah->btcoex_hw.btpriority_gpio = 6;
	197	priv->ah->btcoex_hw.wlanactive_gpio = 8;
	198	priv->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
	199	ath9k_hw_btcoex_init_3wire(priv->ah);
	200	ath_htc_init_btcoex_work(priv);
	201	qnum = priv->hwq_map[WME_AC_BE];
	202	ath9k_hw_init_btcoex_hw(priv->ah, qnum);
	203	break;
	204	default:
	205	WARN_ON(1);
	206	break;
	207	}
	208	}
	209
9d5b80fd SM	210	#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
9d5b80fd SM	211
1e1f4ad2 SM	212	/*******/
	213	/* LED */
	214	/*******/
	215
d244f21e SM	216	#ifdef CONFIG_MAC80211_LEDS
d244f21e SM	217	void ath9k_led_work(struct work_struct *work)
1e1f4ad2	218	{
d244f21e SM	219	struct ath9k_htc_priv *priv = container_of(work,
	220	struct ath9k_htc_priv,
	221	led_work);
1e1f4ad2	222
d244f21e SM	223	ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
d244f21e SM	224	(priv->brightness == LED_OFF));
1e1f4ad2 SM	225	}
	226
	227	static void ath9k_led_brightness(struct led_classdev *led_cdev,
	228	enum led_brightness brightness)
	229	{
d244f21e SM	230	struct ath9k_htc_priv *priv = container_of(led_cdev,
	231	struct ath9k_htc_priv,
	232	led_cdev);
1e1f4ad2	233
d244f21e SM	234	/* Not locked, but it's just a tiny green light..*/
	235	priv->brightness = brightness;
	236	ieee80211_queue_work(priv->hw, &priv->led_work);
1e1f4ad2 SM	237	}
	238
	239	void ath9k_deinit_leds(struct ath9k_htc_priv *priv)
	240	{
d244f21e SM	241	if (!priv->led_registered)
	242	return;
	243
	244	ath9k_led_brightness(&priv->led_cdev, LED_OFF);
	245	led_classdev_unregister(&priv->led_cdev);
	246	cancel_work_sync(&priv->led_work);
1e1f4ad2 SM	247	}
	248
	249	void ath9k_init_leds(struct ath9k_htc_priv *priv)
	250	{
1e1f4ad2 SM	251	int ret;
	252
	253	if (AR_SREV_9287(priv->ah))
	254	priv->ah->led_pin = ATH_LED_PIN_9287;
	255	else if (AR_SREV_9271(priv->ah))
	256	priv->ah->led_pin = ATH_LED_PIN_9271;
	257	else if (AR_DEVID_7010(priv->ah))
	258	priv->ah->led_pin = ATH_LED_PIN_7010;
	259	else
	260	priv->ah->led_pin = ATH_LED_PIN_DEF;
	261
	262	/* Configure gpio 1 for output */
	263	ath9k_hw_cfg_output(priv->ah, priv->ah->led_pin,
	264	AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	265	/* LED off, active low */
	266	ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 1);
	267
d244f21e SM	268	snprintf(priv->led_name, sizeof(priv->led_name),
	269	"ath9k_htc-%s", wiphy_name(priv->hw->wiphy));
	270	priv->led_cdev.name = priv->led_name;
	271	priv->led_cdev.brightness_set = ath9k_led_brightness;
1e1f4ad2	272
d244f21e SM	273	ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &priv->led_cdev);
	274	if (ret < 0)
	275	return;
1e1f4ad2	276
d244f21e SM	277	INIT_WORK(&priv->led_work, ath9k_led_work);
	278	priv->led_registered = true;
	279
	280	return;
1e1f4ad2	281	}
d244f21e	282	#endif
1e1f4ad2 SM	283
	284	/*******************/
	285	/* Rfkill */
	286	/*******************/
	287
	288	static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv)
	289	{
90826313 MSS	290	bool is_blocked;
	291
	292	ath9k_htc_ps_wakeup(priv);
	293	is_blocked = ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) ==
	294	priv->ah->rfkill_polarity;
	295	ath9k_htc_ps_restore(priv);
	296
	297	return is_blocked;
1e1f4ad2 SM	298	}
	299
	300	void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw)
	301	{
	302	struct ath9k_htc_priv *priv = hw->priv;
	303	bool blocked = !!ath_is_rfkill_set(priv);
	304
	305	wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
	306	}
	307
	308	void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv)
	309	{
	310	if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
	311	wiphy_rfkill_start_polling(priv->hw->wiphy);
	312	}