[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / ath / ath9k / htc_drv_gpio.c

/*
 * Copyright (c) 2010 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     */
/******************/

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

		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;
	bool is_btscan;
	int ret;

	ath_detect_bt_priority(priv);

	is_btscan = !!(priv->op_flags & OP_BT_SCAN);

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

	ath9k_hw_btcoex_bt_stomp(priv->ah, is_btscan ? ATH_BTCOEX_STOMP_ALL :
			btcoex->bt_stomp_type);

	timer_period = is_btscan ? 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);
	bool is_btscan = priv->op_flags & OP_BT_SCAN;

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

	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);
}

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
 */

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), ATH_DBG_BTCOEX, "Starting btcoex work\n");

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


/*
 * Cancel btcoex and bt duty cycle work.
 */
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);
}

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

static void ath9k_led_blink_work(struct work_struct *work)
{
	struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
						   ath9k_led_blink_work.work);

	if (!(priv->op_flags & OP_LED_ASSOCIATED))
		return;

	if ((priv->led_on_duration == ATH_LED_ON_DURATION_IDLE) ||
	    (priv->led_off_duration == ATH_LED_OFF_DURATION_IDLE))
		ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 0);
	else
		ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
				  (priv->op_flags & OP_LED_ON) ? 1 : 0);

	ieee80211_queue_delayed_work(priv->hw,
				     &priv->ath9k_led_blink_work,
				     (priv->op_flags & OP_LED_ON) ?
				     msecs_to_jiffies(priv->led_off_duration) :
				     msecs_to_jiffies(priv->led_on_duration));

	priv->led_on_duration = priv->led_on_cnt ?
		max((ATH_LED_ON_DURATION_IDLE - priv->led_on_cnt), 25) :
		ATH_LED_ON_DURATION_IDLE;
	priv->led_off_duration = priv->led_off_cnt ?
		max((ATH_LED_OFF_DURATION_IDLE - priv->led_off_cnt), 10) :
		ATH_LED_OFF_DURATION_IDLE;
	priv->led_on_cnt = priv->led_off_cnt = 0;

	if (priv->op_flags & OP_LED_ON)
		priv->op_flags &= ~OP_LED_ON;
	else
		priv->op_flags |= OP_LED_ON;
}

static void ath9k_led_brightness_work(struct work_struct *work)
{
	struct ath_led *led = container_of(work, struct ath_led,
					   brightness_work.work);
	struct ath9k_htc_priv *priv = led->priv;

	switch (led->brightness) {
	case LED_OFF:
		if (led->led_type == ATH_LED_ASSOC ||
		    led->led_type == ATH_LED_RADIO) {
			ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
					  (led->led_type == ATH_LED_RADIO));
			priv->op_flags &= ~OP_LED_ASSOCIATED;
			if (led->led_type == ATH_LED_RADIO)
				priv->op_flags &= ~OP_LED_ON;
		} else {
			priv->led_off_cnt++;
		}
		break;
	case LED_FULL:
		if (led->led_type == ATH_LED_ASSOC) {
			priv->op_flags |= OP_LED_ASSOCIATED;
			ieee80211_queue_delayed_work(priv->hw,
					     &priv->ath9k_led_blink_work, 0);
		} else if (led->led_type == ATH_LED_RADIO) {
			ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 0);
			priv->op_flags |= OP_LED_ON;
		} else {
			priv->led_on_cnt++;
		}
		break;
	default:
		break;
	}
}

static void ath9k_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 ath9k_htc_priv *priv = led->priv;

	led->brightness = brightness;
	if (!(priv->op_flags & OP_LED_DEINIT))
		ieee80211_queue_delayed_work(priv->hw,
					     &led->brightness_work, 0);
}

void ath9k_led_stop_brightness(struct ath9k_htc_priv *priv)
{
	cancel_delayed_work_sync(&priv->radio_led.brightness_work);
	cancel_delayed_work_sync(&priv->assoc_led.brightness_work);
	cancel_delayed_work_sync(&priv->tx_led.brightness_work);
	cancel_delayed_work_sync(&priv->rx_led.brightness_work);
}

static int ath9k_register_led(struct ath9k_htc_priv *priv, struct ath_led *led,
			      char *trigger)
{
	int ret;

	led->priv = priv;
	led->led_cdev.name = led->name;
	led->led_cdev.default_trigger = trigger;
	led->led_cdev.brightness_set = ath9k_led_brightness;

	ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &led->led_cdev);
	if (ret)
		ath_err(ath9k_hw_common(priv->ah),
			"Failed to register led:%s", led->name);
	else
		led->registered = 1;

	INIT_DELAYED_WORK(&led->brightness_work, ath9k_led_brightness_work);

	return ret;
}

static void ath9k_unregister_led(struct ath_led *led)
{
	if (led->registered) {
		led_classdev_unregister(&led->led_cdev);
		led->registered = 0;
	}
}

void ath9k_deinit_leds(struct ath9k_htc_priv *priv)
{
	priv->op_flags |= OP_LED_DEINIT;
	ath9k_unregister_led(&priv->assoc_led);
	priv->op_flags &= ~OP_LED_ASSOCIATED;
	ath9k_unregister_led(&priv->tx_led);
	ath9k_unregister_led(&priv->rx_led);
	ath9k_unregister_led(&priv->radio_led);
}

void ath9k_init_leds(struct ath9k_htc_priv *priv)
{
	char *trigger;
	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);

	INIT_DELAYED_WORK(&priv->ath9k_led_blink_work, ath9k_led_blink_work);

	trigger = ieee80211_get_radio_led_name(priv->hw);
	snprintf(priv->radio_led.name, sizeof(priv->radio_led.name),
		"ath9k-%s::radio", wiphy_name(priv->hw->wiphy));
	ret = ath9k_register_led(priv, &priv->radio_led, trigger);
	priv->radio_led.led_type = ATH_LED_RADIO;
	if (ret)
		goto fail;

	trigger = ieee80211_get_assoc_led_name(priv->hw);
	snprintf(priv->assoc_led.name, sizeof(priv->assoc_led.name),
		"ath9k-%s::assoc", wiphy_name(priv->hw->wiphy));
	ret = ath9k_register_led(priv, &priv->assoc_led, trigger);
	priv->assoc_led.led_type = ATH_LED_ASSOC;
	if (ret)
		goto fail;

	trigger = ieee80211_get_tx_led_name(priv->hw);
	snprintf(priv->tx_led.name, sizeof(priv->tx_led.name),
		"ath9k-%s::tx", wiphy_name(priv->hw->wiphy));
	ret = ath9k_register_led(priv, &priv->tx_led, trigger);
	priv->tx_led.led_type = ATH_LED_TX;
	if (ret)
		goto fail;

	trigger = ieee80211_get_rx_led_name(priv->hw);
	snprintf(priv->rx_led.name, sizeof(priv->rx_led.name),
		"ath9k-%s::rx", wiphy_name(priv->hw->wiphy));
	ret = ath9k_register_led(priv, &priv->rx_led, trigger);
	priv->rx_led.led_type = ATH_LED_RX;
	if (ret)
		goto fail;

	priv->op_flags &= ~OP_LED_DEINIT;

	return;

fail:
	cancel_delayed_work_sync(&priv->ath9k_led_blink_work);
	ath9k_deinit_leds(priv);
}

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

static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv)
{
	return ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) ==
		priv->ah->rfkill_polarity;
}

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);
}

void ath9k_htc_radio_enable(struct ieee80211_hw *hw)
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_hw *ah = priv->ah;
	struct ath_common *common = ath9k_hw_common(ah);
	int ret;
	u8 cmd_rsp;

	if (!ah->curchan)
		ah->curchan = ath9k_cmn_get_curchannel(hw, ah);

	/* Reset the HW */
	ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
	if (ret) {
		ath_err(common,
			"Unable to reset hardware; reset status %d (freq %u MHz)\n",
			ret, ah->curchan->channel);
	}

	ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
			       &priv->curtxpow);

	/* Start RX */
	WMI_CMD(WMI_START_RECV_CMDID);
	ath9k_host_rx_init(priv);

	/* Start TX */
	htc_start(priv->htc);
	spin_lock_bh(&priv->tx.tx_lock);
	priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
	spin_unlock_bh(&priv->tx.tx_lock);
	ieee80211_wake_queues(hw);

	WMI_CMD(WMI_ENABLE_INTR_CMDID);

	/* Enable LED */
	ath9k_hw_cfg_output(ah, ah->led_pin,
			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	ath9k_hw_set_gpio(ah, ah->led_pin, 0);
}

void ath9k_htc_radio_disable(struct ieee80211_hw *hw)
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_hw *ah = priv->ah;
	struct ath_common *common = ath9k_hw_common(ah);
	int ret;
	u8 cmd_rsp;

	ath9k_htc_ps_wakeup(priv);

	/* Disable LED */
	ath9k_hw_set_gpio(ah, ah->led_pin, 1);
	ath9k_hw_cfg_gpio_input(ah, ah->led_pin);

	WMI_CMD(WMI_DISABLE_INTR_CMDID);

	/* Stop TX */
	ieee80211_stop_queues(hw);
	ath9k_htc_tx_drain(priv);
	WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);

	/* Stop RX */
	WMI_CMD(WMI_STOP_RECV_CMDID);

	/* Clear the WMI event queue */
	ath9k_wmi_event_drain(priv);

	/*
	 * The MIB counters have to be disabled here,
	 * since the target doesn't do it.
	 */
	ath9k_hw_disable_mib_counters(ah);

	if (!ah->curchan)
		ah->curchan = ath9k_cmn_get_curchannel(hw, ah);

	/* Reset the HW */
	ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
	if (ret) {
		ath_err(common,
			"Unable to reset hardware; reset status %d (freq %u MHz)\n",
			ret, ah->curchan->channel);
	}

	/* Disable the PHY */
	ath9k_hw_phy_disable(ah);

	ath9k_htc_ps_restore(priv);
	ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);
}
Commit	Line	Data
1e1f4ad2 SM	1	/*
	2	* Copyright (c) 2010 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
21cb9879 VN	17	#include "htc.h"
	18
	19	/******************/
	20	/* BTCOEX */
	21	/******************/
	22
	23	/*
	24	* Detects if there is any priority bt traffic
	25	*/
	26	static void ath_detect_bt_priority(struct ath9k_htc_priv *priv)
	27	{
	28	struct ath_btcoex *btcoex = &priv->btcoex;
	29	struct ath_hw *ah = priv->ah;
	30
	31	if (ath9k_hw_gpio_get(ah, ah->btcoex_hw.btpriority_gpio))
	32	btcoex->bt_priority_cnt++;
	33
	34	if (time_after(jiffies, btcoex->bt_priority_time +
	35	msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
	36	priv->op_flags &= ~(OP_BT_PRIORITY_DETECTED \| OP_BT_SCAN);
	37	/* Detect if colocated bt started scanning */
	38	if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
226afe68 JP	39	ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
226afe68 JP	40	"BT scan detected\n");
21cb9879 VN	41	priv->op_flags \|= (OP_BT_SCAN \|
	42	OP_BT_PRIORITY_DETECTED);
	43	} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
226afe68 JP	44	ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
226afe68 JP	45	"BT priority traffic detected\n");
21cb9879 VN	46	priv->op_flags \|= OP_BT_PRIORITY_DETECTED;
	47	}
	48
	49	btcoex->bt_priority_cnt = 0;
	50	btcoex->bt_priority_time = jiffies;
	51	}
	52	}
	53
	54	/*
	55	* This is the master bt coex work which runs for every
	56	* 45ms, bt traffic will be given priority during 55% of this
	57	* period while wlan gets remaining 45%
	58	*/
	59	static void ath_btcoex_period_work(struct work_struct *work)
	60	{
	61	struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
	62	coex_period_work.work);
	63	struct ath_btcoex *btcoex = &priv->btcoex;
	64	struct ath_common *common = ath9k_hw_common(priv->ah);
	65	u32 timer_period;
	66	bool is_btscan;
	67	int ret;
21cb9879 VN	68
	69	ath_detect_bt_priority(priv);
	70
	71	is_btscan = !!(priv->op_flags & OP_BT_SCAN);
	72
3a0593ef SM	73	ret = ath9k_htc_update_cap_target(priv,
3a0593ef SM	74	!!(priv->op_flags & OP_BT_PRIORITY_DETECTED));
0ff2b5c0 SM	75	if (ret) {
	76	ath_err(common, "Unable to set BTCOEX parameters\n");
	77	return;
	78	}
21cb9879	79
978f78bf	80	ath9k_hw_btcoex_bt_stomp(priv->ah, is_btscan ? ATH_BTCOEX_STOMP_ALL :
21cb9879 VN	81	btcoex->bt_stomp_type);
	82
	83	timer_period = is_btscan ? btcoex->btscan_no_stomp :
	84	btcoex->btcoex_no_stomp;
	85	ieee80211_queue_delayed_work(priv->hw, &priv->duty_cycle_work,
	86	msecs_to_jiffies(timer_period));
	87	ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work,
	88	msecs_to_jiffies(btcoex->btcoex_period));
	89	}
	90
	91	/*
	92	* Work to time slice between wlan and bt traffic and
	93	* configure weight registers
	94	*/
	95	static void ath_btcoex_duty_cycle_work(struct work_struct *work)
	96	{
	97	struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
	98	duty_cycle_work.work);
	99	struct ath_hw *ah = priv->ah;
	100	struct ath_btcoex *btcoex = &priv->btcoex;
	101	struct ath_common *common = ath9k_hw_common(ah);
	102	bool is_btscan = priv->op_flags & OP_BT_SCAN;
	103
226afe68 JP	104	ath_dbg(common, ATH_DBG_BTCOEX,
226afe68 JP	105	"time slice work for bt and wlan\n");
21cb9879 VN	106
21cb9879 VN	107	if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW \|\| is_btscan)
978f78bf	108	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
21cb9879	109	else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
978f78bf	110	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
21cb9879 VN	111	}
	112
	113	void ath_htc_init_btcoex_work(struct ath9k_htc_priv *priv)
	114	{
	115	struct ath_btcoex *btcoex = &priv->btcoex;
	116
	117	btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD;
	118	btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
	119	btcoex->btcoex_period / 100;
	120	btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
	121	btcoex->btcoex_period / 100;
	122	INIT_DELAYED_WORK(&priv->coex_period_work, ath_btcoex_period_work);
	123	INIT_DELAYED_WORK(&priv->duty_cycle_work, ath_btcoex_duty_cycle_work);
	124	}
	125
	126	/*
	127	* (Re)start btcoex work
	128	*/
	129
	130	void ath_htc_resume_btcoex_work(struct ath9k_htc_priv *priv)
	131	{
	132	struct ath_btcoex *btcoex = &priv->btcoex;
	133	struct ath_hw *ah = priv->ah;
	134
226afe68	135	ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX, "Starting btcoex work\n");
21cb9879 VN	136
	137	btcoex->bt_priority_cnt = 0;
	138	btcoex->bt_priority_time = jiffies;
	139	priv->op_flags &= ~(OP_BT_PRIORITY_DETECTED \| OP_BT_SCAN);
	140	ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, 0);
	141	}
	142
	143
	144	/*
	145	* Cancel btcoex and bt duty cycle work.
	146	*/
	147	void ath_htc_cancel_btcoex_work(struct ath9k_htc_priv *priv)
	148	{
	149	cancel_delayed_work_sync(&priv->coex_period_work);
	150	cancel_delayed_work_sync(&priv->duty_cycle_work);
	151	}
1e1f4ad2 SM	152
	153	/*******/
	154	/* LED */
	155	/*******/
	156
	157	static void ath9k_led_blink_work(struct work_struct *work)
	158	{
	159	struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
	160	ath9k_led_blink_work.work);
	161
	162	if (!(priv->op_flags & OP_LED_ASSOCIATED))
	163	return;
	164
	165	if ((priv->led_on_duration == ATH_LED_ON_DURATION_IDLE) \|\|
	166	(priv->led_off_duration == ATH_LED_OFF_DURATION_IDLE))
	167	ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 0);
	168	else
	169	ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
	170	(priv->op_flags & OP_LED_ON) ? 1 : 0);
	171
	172	ieee80211_queue_delayed_work(priv->hw,
	173	&priv->ath9k_led_blink_work,
	174	(priv->op_flags & OP_LED_ON) ?
	175	msecs_to_jiffies(priv->led_off_duration) :
	176	msecs_to_jiffies(priv->led_on_duration));
	177
	178	priv->led_on_duration = priv->led_on_cnt ?
	179	max((ATH_LED_ON_DURATION_IDLE - priv->led_on_cnt), 25) :
	180	ATH_LED_ON_DURATION_IDLE;
	181	priv->led_off_duration = priv->led_off_cnt ?
	182	max((ATH_LED_OFF_DURATION_IDLE - priv->led_off_cnt), 10) :
	183	ATH_LED_OFF_DURATION_IDLE;
	184	priv->led_on_cnt = priv->led_off_cnt = 0;
	185
	186	if (priv->op_flags & OP_LED_ON)
	187	priv->op_flags &= ~OP_LED_ON;
	188	else
	189	priv->op_flags \|= OP_LED_ON;
	190	}
	191
	192	static void ath9k_led_brightness_work(struct work_struct *work)
	193	{
	194	struct ath_led *led = container_of(work, struct ath_led,
	195	brightness_work.work);
	196	struct ath9k_htc_priv *priv = led->priv;
	197
	198	switch (led->brightness) {
	199	case LED_OFF:
	200	if (led->led_type == ATH_LED_ASSOC \|\|
	201	led->led_type == ATH_LED_RADIO) {
	202	ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
	203	(led->led_type == ATH_LED_RADIO));
	204	priv->op_flags &= ~OP_LED_ASSOCIATED;
	205	if (led->led_type == ATH_LED_RADIO)
	206	priv->op_flags &= ~OP_LED_ON;
	207	} else {
	208	priv->led_off_cnt++;
	209	}
	210	break;
	211	case LED_FULL:
	212	if (led->led_type == ATH_LED_ASSOC) {
	213	priv->op_flags \|= OP_LED_ASSOCIATED;
	214	ieee80211_queue_delayed_work(priv->hw,
	215	&priv->ath9k_led_blink_work, 0);
216	} else if (led->led_type == ATH_LED_RADIO) {
217	ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 0);
218	priv->op_flags \|= OP_LED_ON;
219	} else {
220	priv->led_on_cnt++;
221	}
222	break;
223	default:
224	break;
225	}
226	}
227
228	static void ath9k_led_brightness(struct led_classdev *led_cdev,
229	enum led_brightness brightness)
230	{
231	struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
232	struct ath9k_htc_priv *priv = led->priv;
233
234	led->brightness = brightness;
235	if (!(priv->op_flags & OP_LED_DEINIT))
236	ieee80211_queue_delayed_work(priv->hw,
237	&led->brightness_work, 0);
238	}
239
240	void ath9k_led_stop_brightness(struct ath9k_htc_priv *priv)
241	{
242	cancel_delayed_work_sync(&priv->radio_led.brightness_work);
243	cancel_delayed_work_sync(&priv->assoc_led.brightness_work);
244	cancel_delayed_work_sync(&priv->tx_led.brightness_work);
245	cancel_delayed_work_sync(&priv->rx_led.brightness_work);
246	}
247
248	static int ath9k_register_led(struct ath9k_htc_priv priv, struct ath_led led,
249	char *trigger)
250	{
251	int ret;
252
253	led->priv = priv;
254	led->led_cdev.name = led->name;
255	led->led_cdev.default_trigger = trigger;
256	led->led_cdev.brightness_set = ath9k_led_brightness;
257
258	ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &led->led_cdev);
259	if (ret)
260	ath_err(ath9k_hw_common(priv->ah),
261	"Failed to register led:%s", led->name);
262	else
263	led->registered = 1;
264
265	INIT_DELAYED_WORK(&led->brightness_work, ath9k_led_brightness_work);
266
267	return ret;
268	}
269
270	static void ath9k_unregister_led(struct ath_led *led)
271	{
272	if (led->registered) {
273	led_classdev_unregister(&led->led_cdev);
274	led->registered = 0;
275	}
276	}
277
278	void ath9k_deinit_leds(struct ath9k_htc_priv *priv)
279	{
280	priv->op_flags \|= OP_LED_DEINIT;
281	ath9k_unregister_led(&priv->assoc_led);
282	priv->op_flags &= ~OP_LED_ASSOCIATED;
283	ath9k_unregister_led(&priv->tx_led);
284	ath9k_unregister_led(&priv->rx_led);
285	ath9k_unregister_led(&priv->radio_led);
286	}
287
288	void ath9k_init_leds(struct ath9k_htc_priv *priv)
289	{
290	char *trigger;
291	int ret;
292
293	if (AR_SREV_9287(priv->ah))
294	priv->ah->led_pin = ATH_LED_PIN_9287;
295	else if (AR_SREV_9271(priv->ah))
296	priv->ah->led_pin = ATH_LED_PIN_9271;
297	else if (AR_DEVID_7010(priv->ah))
298	priv->ah->led_pin = ATH_LED_PIN_7010;
299	else
300	priv->ah->led_pin = ATH_LED_PIN_DEF;
301
302	/* Configure gpio 1 for output */
303	ath9k_hw_cfg_output(priv->ah, priv->ah->led_pin,
304	AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
305	/* LED off, active low */
306	ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 1);
307
308	INIT_DELAYED_WORK(&priv->ath9k_led_blink_work, ath9k_led_blink_work);
309
310	trigger = ieee80211_get_radio_led_name(priv->hw);
311	snprintf(priv->radio_led.name, sizeof(priv->radio_led.name),
312	"ath9k-%s::radio", wiphy_name(priv->hw->wiphy));
313	ret = ath9k_register_led(priv, &priv->radio_led, trigger);
314	priv->radio_led.led_type = ATH_LED_RADIO;
315	if (ret)
316	goto fail;
317
318	trigger = ieee80211_get_assoc_led_name(priv->hw);
319	snprintf(priv->assoc_led.name, sizeof(priv->assoc_led.name),
320	"ath9k-%s::assoc", wiphy_name(priv->hw->wiphy));
321	ret = ath9k_register_led(priv, &priv->assoc_led, trigger);
322	priv->assoc_led.led_type = ATH_LED_ASSOC;
323	if (ret)
324	goto fail;
325
326	trigger = ieee80211_get_tx_led_name(priv->hw);
327	snprintf(priv->tx_led.name, sizeof(priv->tx_led.name),
328	"ath9k-%s::tx", wiphy_name(priv->hw->wiphy));
329	ret = ath9k_register_led(priv, &priv->tx_led, trigger);
330	priv->tx_led.led_type = ATH_LED_TX;
331	if (ret)
332	goto fail;
333
334	trigger = ieee80211_get_rx_led_name(priv->hw);
335	snprintf(priv->rx_led.name, sizeof(priv->rx_led.name),
336	"ath9k-%s::rx", wiphy_name(priv->hw->wiphy));
337	ret = ath9k_register_led(priv, &priv->rx_led, trigger);
338	priv->rx_led.led_type = ATH_LED_RX;
339	if (ret)
340	goto fail;
341
342	priv->op_flags &= ~OP_LED_DEINIT;
343
344	return;
345
346	fail:
347	cancel_delayed_work_sync(&priv->ath9k_led_blink_work);
348	ath9k_deinit_leds(priv);
349	}
350
351	/*******************/
352	/* Rfkill */
353	/*******************/
354
355	static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv)
356	{
357	return ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) ==
358	priv->ah->rfkill_polarity;
359	}
360
361	void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw)
362	{
363	struct ath9k_htc_priv *priv = hw->priv;
364	bool blocked = !!ath_is_rfkill_set(priv);
365
366	wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
367	}
368
369	void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv)
370	{
371	if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
372	wiphy_rfkill_start_polling(priv->hw->wiphy);
373	}
374
375	void ath9k_htc_radio_enable(struct ieee80211_hw *hw)
376	{
377	struct ath9k_htc_priv *priv = hw->priv;
378	struct ath_hw *ah = priv->ah;
379	struct ath_common *common = ath9k_hw_common(ah);
380	int ret;
381	u8 cmd_rsp;
382
383	if (!ah->curchan)
384	ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
385
386	/* Reset the HW */
387	ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
388	if (ret) {
389	ath_err(common,
390	"Unable to reset hardware; reset status %d (freq %u MHz)\n",
391	ret, ah->curchan->channel);
392	}
393
b2a5c3df RM	394	ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
b2a5c3df RM	395	&priv->curtxpow);
1e1f4ad2 SM	396
	397	/* Start RX */
	398	WMI_CMD(WMI_START_RECV_CMDID);
	399	ath9k_host_rx_init(priv);
	400
	401	/* Start TX */
	402	htc_start(priv->htc);
658ef04f	403	spin_lock_bh(&priv->tx.tx_lock);
8e86a547	404	priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
658ef04f	405	spin_unlock_bh(&priv->tx.tx_lock);
1e1f4ad2 SM	406	ieee80211_wake_queues(hw);
	407
	408	WMI_CMD(WMI_ENABLE_INTR_CMDID);
	409
	410	/* Enable LED */
	411	ath9k_hw_cfg_output(ah, ah->led_pin,
	412	AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	413	ath9k_hw_set_gpio(ah, ah->led_pin, 0);
	414	}
	415
	416	void ath9k_htc_radio_disable(struct ieee80211_hw *hw)
	417	{
	418	struct ath9k_htc_priv *priv = hw->priv;
	419	struct ath_hw *ah = priv->ah;
	420	struct ath_common *common = ath9k_hw_common(ah);
	421	int ret;
	422	u8 cmd_rsp;
	423
	424	ath9k_htc_ps_wakeup(priv);
	425
	426	/* Disable LED */
	427	ath9k_hw_set_gpio(ah, ah->led_pin, 1);
	428	ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
	429
	430	WMI_CMD(WMI_DISABLE_INTR_CMDID);
	431
	432	/* Stop TX */
	433	ieee80211_stop_queues(hw);
b587fc81	434	ath9k_htc_tx_drain(priv);
1e1f4ad2	435	WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
1e1f4ad2 SM	436
	437	/* Stop RX */
	438	WMI_CMD(WMI_STOP_RECV_CMDID);
	439
f4c88991 SM	440	/* Clear the WMI event queue */
	441	ath9k_wmi_event_drain(priv);
	442
1e1f4ad2 SM	443	/*
	444	* The MIB counters have to be disabled here,
	445	* since the target doesn't do it.
	446	*/
	447	ath9k_hw_disable_mib_counters(ah);
	448
	449	if (!ah->curchan)
	450	ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
	451
	452	/* Reset the HW */
	453	ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
	454	if (ret) {
	455	ath_err(common,
	456	"Unable to reset hardware; reset status %d (freq %u MHz)\n",
	457	ret, ah->curchan->channel);
	458	}
	459
	460	/* Disable the PHY */
	461	ath9k_hw_phy_disable(ah);
	462
	463	ath9k_htc_ps_restore(priv);
	464	ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);
	465	}