[mirror_ubuntu-zesty-kernel.git] / drivers / net / wireless / ath / ath9k / btcoex.c

/*
 * Copyright (c) 2009-2011 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 <linux/export.h>
#include "hw.h"

enum ath_bt_mode {
	ATH_BT_COEX_MODE_LEGACY,        /* legacy rx_clear mode */
	ATH_BT_COEX_MODE_UNSLOTTED,     /* untimed/unslotted mode */
	ATH_BT_COEX_MODE_SLOTTED,       /* slotted mode */
	ATH_BT_COEX_MODE_DISABLED,      /* coexistence disabled */
};

struct ath_btcoex_config {
	u8 bt_time_extend;
	bool bt_txstate_extend;
	bool bt_txframe_extend;
	enum ath_bt_mode bt_mode; /* coexistence mode */
	bool bt_quiet_collision;
	bool bt_rxclear_polarity; /* invert rx_clear as WLAN_ACTIVE*/
	u8 bt_priority_time;
	u8 bt_first_slot_time;
	bool bt_hold_rx_clear;
};

static const u32 ar9003_wlan_weights[ATH_BTCOEX_STOMP_MAX]
				    [AR9300_NUM_WLAN_WEIGHTS] = {
	{ 0xfffffff0, 0xfffffff0, 0xfffffff0, 0xfffffff0 }, /* STOMP_ALL */
	{ 0x88888880, 0x88888880, 0x88888880, 0x88888880 }, /* STOMP_LOW */
	{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* STOMP_NONE */
};

static const u32 mci_wlan_weights[ATH_BTCOEX_STOMP_MAX]
				 [AR9300_NUM_WLAN_WEIGHTS] = {
	{ 0x01017d01, 0x41414101, 0x41414101, 0x41414141 }, /* STOMP_ALL */
	{ 0x01017d01, 0x3b3b3b01, 0x3b3b3b01, 0x3b3b3b3b }, /* STOMP_LOW */
	{ 0x01017d01, 0x01010101, 0x01010101, 0x01010101 }, /* STOMP_NONE */
	{ 0x01017d01, 0x013b0101, 0x3b3b0101, 0x3b3b013b }, /* STOMP_LOW_FTP */
	{ 0xffffff01, 0xffffffff, 0xffffff01, 0xffffffff }, /* STOMP_AUDIO */
};

void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum)
{
	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
	const struct ath_btcoex_config ath_bt_config = {
		.bt_time_extend = 0,
		.bt_txstate_extend = true,
		.bt_txframe_extend = true,
		.bt_mode = ATH_BT_COEX_MODE_SLOTTED,
		.bt_quiet_collision = true,
		.bt_rxclear_polarity = true,
		.bt_priority_time = 2,
		.bt_first_slot_time = 5,
		.bt_hold_rx_clear = true,
	};
	bool rxclear_polarity = ath_bt_config.bt_rxclear_polarity;

	if (AR_SREV_9300_20_OR_LATER(ah))
		rxclear_polarity = !ath_bt_config.bt_rxclear_polarity;

	btcoex_hw->bt_coex_mode =
		(btcoex_hw->bt_coex_mode & AR_BT_QCU_THRESH) |
		SM(ath_bt_config.bt_time_extend, AR_BT_TIME_EXTEND) |
		SM(ath_bt_config.bt_txstate_extend, AR_BT_TXSTATE_EXTEND) |
		SM(ath_bt_config.bt_txframe_extend, AR_BT_TX_FRAME_EXTEND) |
		SM(ath_bt_config.bt_mode, AR_BT_MODE) |
		SM(ath_bt_config.bt_quiet_collision, AR_BT_QUIET) |
		SM(rxclear_polarity, AR_BT_RX_CLEAR_POLARITY) |
		SM(ath_bt_config.bt_priority_time, AR_BT_PRIORITY_TIME) |
		SM(ath_bt_config.bt_first_slot_time, AR_BT_FIRST_SLOT_TIME) |
		SM(qnum, AR_BT_QCU_THRESH);

	btcoex_hw->bt_coex_mode2 =
		SM(ath_bt_config.bt_hold_rx_clear, AR_BT_HOLD_RX_CLEAR) |
		SM(ATH_BTCOEX_BMISS_THRESH, AR_BT_BCN_MISS_THRESH) |
		AR_BT_DISABLE_BT_ANT;
}
EXPORT_SYMBOL(ath9k_hw_init_btcoex_hw);

void ath9k_hw_btcoex_init_scheme(struct ath_hw *ah)
{
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;

	/*
	 * Check if BTCOEX is globally disabled.
	 */
	if (!common->btcoex_enabled) {
		btcoex_hw->scheme = ATH_BTCOEX_CFG_NONE;
		return;
	}

	if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
		btcoex_hw->scheme = ATH_BTCOEX_CFG_MCI;
	} else if (AR_SREV_9300_20_OR_LATER(ah)) {
		btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
		btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9300;
		btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9300;
		btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO_9300;
	} else if (AR_SREV_9280_20_OR_LATER(ah)) {
		btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9280;
		btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9280;

		if (AR_SREV_9285(ah)) {
			btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
			btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO_9285;
		} else {
			btcoex_hw->scheme = ATH_BTCOEX_CFG_2WIRE;
		}
	}
}
EXPORT_SYMBOL(ath9k_hw_btcoex_init_scheme);

void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah)
{
	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;

	/* connect bt_active to baseband */
	REG_CLR_BIT(ah, AR_GPIO_INPUT_EN_VAL,
		    (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_DEF |
		     AR_GPIO_INPUT_EN_VAL_BT_FREQUENCY_DEF));

	REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
		    AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB);

	/* Set input mux for bt_active to gpio pin */
	REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
		      AR_GPIO_INPUT_MUX1_BT_ACTIVE,
		      btcoex_hw->btactive_gpio);

	/* Configure the desired gpio port for input */
	ath9k_hw_gpio_request_in(ah, btcoex_hw->btactive_gpio,
				 "ath9k-btactive");
}
EXPORT_SYMBOL(ath9k_hw_btcoex_init_2wire);

void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah)
{
	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;

	/* btcoex 3-wire */
	REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
			(AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_BB |
			 AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB));

	/* Set input mux for bt_prority_async and
	 *                  bt_active_async to GPIO pins */
	REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
			AR_GPIO_INPUT_MUX1_BT_ACTIVE,
			btcoex_hw->btactive_gpio);

	REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
			AR_GPIO_INPUT_MUX1_BT_PRIORITY,
			btcoex_hw->btpriority_gpio);

	/* Configure the desired GPIO ports for input */
	ath9k_hw_gpio_request_in(ah, btcoex_hw->btactive_gpio,
				 "ath9k-btactive");
	ath9k_hw_gpio_request_in(ah, btcoex_hw->btpriority_gpio,
				 "ath9k-btpriority");
}
EXPORT_SYMBOL(ath9k_hw_btcoex_init_3wire);

void ath9k_hw_btcoex_deinit(struct ath_hw *ah)
{
	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;

	ath9k_hw_gpio_free(ah, btcoex_hw->btactive_gpio);
	ath9k_hw_gpio_free(ah, btcoex_hw->btpriority_gpio);
	ath9k_hw_gpio_free(ah, btcoex_hw->wlanactive_gpio);
}
EXPORT_SYMBOL(ath9k_hw_btcoex_deinit);

void ath9k_hw_btcoex_init_mci(struct ath_hw *ah)
{
	ah->btcoex_hw.mci.ready = false;
	ah->btcoex_hw.mci.bt_state = 0;
	ah->btcoex_hw.mci.bt_ver_major = 3;
	ah->btcoex_hw.mci.bt_ver_minor = 0;
	ah->btcoex_hw.mci.bt_version_known = false;
	ah->btcoex_hw.mci.update_2g5g = true;
	ah->btcoex_hw.mci.is_2g = true;
	ah->btcoex_hw.mci.wlan_channels_update = false;
	ah->btcoex_hw.mci.wlan_channels[0] = 0x00000000;
	ah->btcoex_hw.mci.wlan_channels[1] = 0xffffffff;
	ah->btcoex_hw.mci.wlan_channels[2] = 0xffffffff;
	ah->btcoex_hw.mci.wlan_channels[3] = 0x7fffffff;
	ah->btcoex_hw.mci.query_bt = true;
	ah->btcoex_hw.mci.unhalt_bt_gpm = true;
	ah->btcoex_hw.mci.halted_bt_gpm = false;
	ah->btcoex_hw.mci.need_flush_btinfo = false;
	ah->btcoex_hw.mci.wlan_cal_seq = 0;
	ah->btcoex_hw.mci.wlan_cal_done = 0;
	ah->btcoex_hw.mci.config = (AR_SREV_9462(ah)) ? 0x2201 : 0xa4c1;
}
EXPORT_SYMBOL(ath9k_hw_btcoex_init_mci);

static void ath9k_hw_btcoex_enable_2wire(struct ath_hw *ah)
{
	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;

	/* Configure the desired GPIO port for TX_FRAME output */
	ath9k_hw_gpio_request_out(ah, btcoex_hw->wlanactive_gpio,
				  "ath9k-wlanactive",
				  AR_GPIO_OUTPUT_MUX_AS_TX_FRAME);
}

/*
 * For AR9002, bt_weight/wlan_weight are used.
 * For AR9003 and above, stomp_type is used.
 */
void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,
				u32 bt_weight,
				u32 wlan_weight,
				enum ath_stomp_type stomp_type)
{
	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
	struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
	u8 txprio_shift[] = { 24, 16, 16, 0 }; /* tx priority weight */
	bool concur_tx = (mci_hw->concur_tx && btcoex_hw->tx_prio[stomp_type]);
	const u32 *weight = ar9003_wlan_weights[stomp_type];
	int i;

	if (!AR_SREV_9300_20_OR_LATER(ah)) {
		btcoex_hw->bt_coex_weights =
			SM(bt_weight, AR_BTCOEX_BT_WGHT) |
			SM(wlan_weight, AR_BTCOEX_WL_WGHT);
		return;
	}

	if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
		enum ath_stomp_type stype =
			((stomp_type == ATH_BTCOEX_STOMP_LOW) &&
			 btcoex_hw->mci.stomp_ftp) ?
			ATH_BTCOEX_STOMP_LOW_FTP : stomp_type;
		weight = mci_wlan_weights[stype];
	}

	for (i = 0; i < AR9300_NUM_WLAN_WEIGHTS; i++) {
		btcoex_hw->bt_weight[i] = AR9300_BT_WGHT;
		btcoex_hw->wlan_weight[i] = weight[i];
		if (concur_tx && i) {
			btcoex_hw->wlan_weight[i] &=
				~(0xff << txprio_shift[i-1]);
			btcoex_hw->wlan_weight[i] |=
				(btcoex_hw->tx_prio[stomp_type] <<
				 txprio_shift[i-1]);
		}
	}
	/* Last WLAN weight has to be adjusted wrt tx priority */
	if (concur_tx) {
		btcoex_hw->wlan_weight[i-1] &= ~(0xff << txprio_shift[i-1]);
		btcoex_hw->wlan_weight[i-1] |= (btcoex_hw->tx_prio[stomp_type]
						      << txprio_shift[i-1]);
	}

}
EXPORT_SYMBOL(ath9k_hw_btcoex_set_weight);


static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah)
{
	struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
	u32  val;
	int i;

	/*
	 * Program coex mode and weight registers to
	 * enable coex 3-wire
	 */
	REG_WRITE(ah, AR_BT_COEX_MODE, btcoex->bt_coex_mode);
	REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex->bt_coex_mode2);

	if (AR_SREV_9300_20_OR_LATER(ah)) {
		REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS0, btcoex->wlan_weight[0]);
		REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS1, btcoex->wlan_weight[1]);
		for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
			REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS(i),
				  btcoex->bt_weight[i]);
	} else
		REG_WRITE(ah, AR_BT_COEX_WEIGHT, btcoex->bt_coex_weights);

	if (AR_SREV_9271(ah)) {
		val = REG_READ(ah, 0x50040);
		val &= 0xFFFFFEFF;
		REG_WRITE(ah, 0x50040, val);
	}

	REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1);
	REG_RMW_FIELD(ah, AR_PCU_MISC, AR_PCU_BT_ANT_PREVENT_RX, 0);

	ath9k_hw_gpio_request_out(ah, btcoex->wlanactive_gpio,
				  "ath9k-wlanactive",
				  AR_GPIO_OUTPUT_MUX_AS_RX_CLEAR_EXTERNAL);
}

static void ath9k_hw_btcoex_enable_mci(struct ath_hw *ah)
{
	struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
	int i;

	for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
		REG_WRITE(ah, AR_MCI_COEX_WL_WEIGHTS(i),
			  btcoex->wlan_weight[i]);

	REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1);
	btcoex->enabled = true;
}

static void ath9k_hw_btcoex_disable_mci(struct ath_hw *ah)
{
	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
	int i;

	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);

	for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
		REG_WRITE(ah, AR_MCI_COEX_WL_WEIGHTS(i),
			  btcoex_hw->wlan_weight[i]);
}

void ath9k_hw_btcoex_enable(struct ath_hw *ah)
{
	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;

	switch (ath9k_hw_get_btcoex_scheme(ah)) {
	case ATH_BTCOEX_CFG_NONE:
		return;
	case ATH_BTCOEX_CFG_2WIRE:
		ath9k_hw_btcoex_enable_2wire(ah);
		break;
	case ATH_BTCOEX_CFG_3WIRE:
		ath9k_hw_btcoex_enable_3wire(ah);
		break;
	case ATH_BTCOEX_CFG_MCI:
		ath9k_hw_btcoex_enable_mci(ah);
		break;
	}

	if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI) {
		REG_RMW(ah, AR_GPIO_PDPU,
			(0x2 << (btcoex_hw->btactive_gpio * 2)),
			(0x3 << (btcoex_hw->btactive_gpio * 2)));
	}

	ah->btcoex_hw.enabled = true;
}
EXPORT_SYMBOL(ath9k_hw_btcoex_enable);

void ath9k_hw_btcoex_disable(struct ath_hw *ah)
{
	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
	int i;

	btcoex_hw->enabled = false;

	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_MCI) {
		ath9k_hw_btcoex_disable_mci(ah);
		return;
	}

	if (!AR_SREV_9300_20_OR_LATER(ah))
		ath9k_hw_set_gpio(ah, btcoex_hw->wlanactive_gpio, 0);

	ath9k_hw_gpio_request_out(ah, btcoex_hw->wlanactive_gpio,
				  NULL, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);

	if (btcoex_hw->scheme == ATH_BTCOEX_CFG_3WIRE) {
		REG_WRITE(ah, AR_BT_COEX_MODE, AR_BT_QUIET | AR_BT_MODE);
		REG_WRITE(ah, AR_BT_COEX_MODE2, 0);

		if (AR_SREV_9300_20_OR_LATER(ah)) {
			REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS0, 0);
			REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS1, 0);
			for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
				REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS(i), 0);
		} else
			REG_WRITE(ah, AR_BT_COEX_WEIGHT, 0);

	}
}
EXPORT_SYMBOL(ath9k_hw_btcoex_disable);

/*
 * Configures appropriate weight based on stomp type.
 */
void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
			      enum ath_stomp_type stomp_type)
{
	if (AR_SREV_9300_20_OR_LATER(ah)) {
		ath9k_hw_btcoex_set_weight(ah, 0, 0, stomp_type);
		return;
	}

	switch (stomp_type) {
	case ATH_BTCOEX_STOMP_ALL:
		ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
					   AR_STOMP_ALL_WLAN_WGHT, 0);
		break;
	case ATH_BTCOEX_STOMP_LOW:
		ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
					   AR_STOMP_LOW_WLAN_WGHT, 0);
		break;
	case ATH_BTCOEX_STOMP_NONE:
		ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
					   AR_STOMP_NONE_WLAN_WGHT, 0);
		break;
	default:
		ath_dbg(ath9k_hw_common(ah), BTCOEX, "Invalid Stomptype\n");
		break;
	}
}
EXPORT_SYMBOL(ath9k_hw_btcoex_bt_stomp);

void ath9k_hw_btcoex_set_concur_txprio(struct ath_hw *ah, u8 *stomp_txprio)
{
	struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
	int i;

	for (i = 0; i < ATH_BTCOEX_STOMP_MAX; i++)
		btcoex->tx_prio[i] = stomp_txprio[i];
}
EXPORT_SYMBOL(ath9k_hw_btcoex_set_concur_txprio);
Commit	Line	Data
17d50d1d	1	/*
5b68138e	2	* Copyright (c) 2009-2011 Atheros Communications Inc.
17d50d1d VT	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
ee40fa06	17	#include <linux/export.h>
cfe8cba9	18	#include "hw.h"
17d50d1d	19
8b4fc5ba LR	20	enum ath_bt_mode {
	21	ATH_BT_COEX_MODE_LEGACY, /* legacy rx_clear mode */
	22	ATH_BT_COEX_MODE_UNSLOTTED, /* untimed/unslotted mode */
	23	ATH_BT_COEX_MODE_SLOTTED, /* slotted mode */
32b1076d	24	ATH_BT_COEX_MODE_DISABLED, /* coexistence disabled */
8b4fc5ba LR	25	};
	26
	27	struct ath_btcoex_config {
	28	u8 bt_time_extend;
	29	bool bt_txstate_extend;
	30	bool bt_txframe_extend;
	31	enum ath_bt_mode bt_mode; /* coexistence mode */
	32	bool bt_quiet_collision;
	33	bool bt_rxclear_polarity; /* invert rx_clear as WLAN_ACTIVE*/
	34	u8 bt_priority_time;
	35	u8 bt_first_slot_time;
	36	bool bt_hold_rx_clear;
	37	};
1773912b	38
54f10b05 RM	39	static const u32 ar9003_wlan_weights[ATH_BTCOEX_STOMP_MAX]
	40	[AR9300_NUM_WLAN_WEIGHTS] = {
	41	{ 0xfffffff0, 0xfffffff0, 0xfffffff0, 0xfffffff0 }, /* STOMP_ALL */
	42	{ 0x88888880, 0x88888880, 0x88888880, 0x88888880 }, /* STOMP_LOW */
	43	{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* STOMP_NONE */
	44	};
1773912b	45
5160b46f SM	46	static const u32 mci_wlan_weights[ATH_BTCOEX_STOMP_MAX]
5160b46f SM	47	[AR9300_NUM_WLAN_WEIGHTS] = {
8227bf45 RM	48	{ 0x01017d01, 0x41414101, 0x41414101, 0x41414141 }, /* STOMP_ALL */
	49	{ 0x01017d01, 0x3b3b3b01, 0x3b3b3b01, 0x3b3b3b3b }, /* STOMP_LOW */
	50	{ 0x01017d01, 0x01010101, 0x01010101, 0x01010101 }, /* STOMP_NONE */
	51	{ 0x01017d01, 0x013b0101, 0x3b3b0101, 0x3b3b013b }, /* STOMP_LOW_FTP */
2884561a	52	{ 0xffffff01, 0xffffffff, 0xffffff01, 0xffffffff }, /* STOMP_AUDIO */
8227bf45 RM	53	};
8227bf45 RM	54
766ec4a9	55	void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum)
af03abec	56	{
766ec4a9	57	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
8b4fc5ba LR	58	const struct ath_btcoex_config ath_bt_config = {
	59	.bt_time_extend = 0,
	60	.bt_txstate_extend = true,
	61	.bt_txframe_extend = true,
	62	.bt_mode = ATH_BT_COEX_MODE_SLOTTED,
	63	.bt_quiet_collision = true,
	64	.bt_rxclear_polarity = true,
	65	.bt_priority_time = 2,
	66	.bt_first_slot_time = 5,
	67	.bt_hold_rx_clear = true,
	68	};
a6ef530f VN	69	bool rxclear_polarity = ath_bt_config.bt_rxclear_polarity;
	70
	71	if (AR_SREV_9300_20_OR_LATER(ah))
	72	rxclear_polarity = !ath_bt_config.bt_rxclear_polarity;
1773912b	73
766ec4a9 LR	74	btcoex_hw->bt_coex_mode =
766ec4a9 LR	75	(btcoex_hw->bt_coex_mode & AR_BT_QCU_THRESH) \|
1773912b VT	76	SM(ath_bt_config.bt_time_extend, AR_BT_TIME_EXTEND) \|
	77	SM(ath_bt_config.bt_txstate_extend, AR_BT_TXSTATE_EXTEND) \|
	78	SM(ath_bt_config.bt_txframe_extend, AR_BT_TX_FRAME_EXTEND) \|
	79	SM(ath_bt_config.bt_mode, AR_BT_MODE) \|
	80	SM(ath_bt_config.bt_quiet_collision, AR_BT_QUIET) \|
a6ef530f	81	SM(rxclear_polarity, AR_BT_RX_CLEAR_POLARITY) \|
1773912b VT	82	SM(ath_bt_config.bt_priority_time, AR_BT_PRIORITY_TIME) \|
	83	SM(ath_bt_config.bt_first_slot_time, AR_BT_FIRST_SLOT_TIME) \|
	84	SM(qnum, AR_BT_QCU_THRESH);
	85
766ec4a9	86	btcoex_hw->bt_coex_mode2 =
1773912b VT	87	SM(ath_bt_config.bt_hold_rx_clear, AR_BT_HOLD_RX_CLEAR) \|
	88	SM(ATH_BTCOEX_BMISS_THRESH, AR_BT_BCN_MISS_THRESH) \|
	89	AR_BT_DISABLE_BT_ANT;
1773912b	90	}
7322fd19	91	EXPORT_SYMBOL(ath9k_hw_init_btcoex_hw);
1773912b	92
d68475de SM	93	void ath9k_hw_btcoex_init_scheme(struct ath_hw *ah)
	94	{
	95	struct ath_common *common = ath9k_hw_common(ah);
	96	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
	97
	98	/*
	99	* Check if BTCOEX is globally disabled.
	100	*/
	101	if (!common->btcoex_enabled) {
	102	btcoex_hw->scheme = ATH_BTCOEX_CFG_NONE;
	103	return;
	104	}
	105
e1ff147d SM	106	if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
	107	btcoex_hw->scheme = ATH_BTCOEX_CFG_MCI;
	108	} else if (AR_SREV_9300_20_OR_LATER(ah)) {
d68475de SM	109	btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
	110	btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9300;
	111	btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9300;
	112	btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO_9300;
	113	} else if (AR_SREV_9280_20_OR_LATER(ah)) {
	114	btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9280;
	115	btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9280;
	116
	117	if (AR_SREV_9285(ah)) {
	118	btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
	119	btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO_9285;
	120	} else {
	121	btcoex_hw->scheme = ATH_BTCOEX_CFG_2WIRE;
	122	}
	123	}
	124	}
	125	EXPORT_SYMBOL(ath9k_hw_btcoex_init_scheme);
	126
75d7839f	127	void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah)
17d50d1d	128	{
766ec4a9	129	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
1773912b	130
7a2f0f58 LR	131	/* connect bt_active to baseband */
	132	REG_CLR_BIT(ah, AR_GPIO_INPUT_EN_VAL,
	133	(AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_DEF \|
	134	AR_GPIO_INPUT_EN_VAL_BT_FREQUENCY_DEF));
1773912b	135
7a2f0f58 LR	136	REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
7a2f0f58 LR	137	AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB);
1773912b	138
7a2f0f58 LR	139	/* Set input mux for bt_active to gpio pin */
	140	REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
	141	AR_GPIO_INPUT_MUX1_BT_ACTIVE,
766ec4a9	142	btcoex_hw->btactive_gpio);
f14462c6	143
7a2f0f58	144	/* Configure the desired gpio port for input */
b2d70d49 MP	145	ath9k_hw_gpio_request_in(ah, btcoex_hw->btactive_gpio,
b2d70d49 MP	146	"ath9k-btactive");
7a2f0f58	147	}
7322fd19	148	EXPORT_SYMBOL(ath9k_hw_btcoex_init_2wire);
7a2f0f58	149
75d7839f	150	void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah)
7a2f0f58	151	{
766ec4a9	152	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
17d50d1d	153
7a2f0f58 LR	154	/* btcoex 3-wire */
	155	REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
	156	(AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_BB \|
	157	AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB));
17d50d1d	158
7a2f0f58 LR	159	/* Set input mux for bt_prority_async and
	160	* bt_active_async to GPIO pins */
	161	REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
	162	AR_GPIO_INPUT_MUX1_BT_ACTIVE,
766ec4a9	163	btcoex_hw->btactive_gpio);
17d50d1d	164
7a2f0f58 LR	165	REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
7a2f0f58 LR	166	AR_GPIO_INPUT_MUX1_BT_PRIORITY,
766ec4a9	167	btcoex_hw->btpriority_gpio);
1773912b	168
7a2f0f58	169	/* Configure the desired GPIO ports for input */
b2d70d49 MP	170	ath9k_hw_gpio_request_in(ah, btcoex_hw->btactive_gpio,
	171	"ath9k-btactive");
	172	ath9k_hw_gpio_request_in(ah, btcoex_hw->btpriority_gpio,
	173	"ath9k-btpriority");
7a2f0f58	174	}
7322fd19	175	EXPORT_SYMBOL(ath9k_hw_btcoex_init_3wire);
7a2f0f58	176
db222190 MP	177	void ath9k_hw_btcoex_deinit(struct ath_hw *ah)
	178	{
	179	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
	180
	181	ath9k_hw_gpio_free(ah, btcoex_hw->btactive_gpio);
	182	ath9k_hw_gpio_free(ah, btcoex_hw->btpriority_gpio);
	183	ath9k_hw_gpio_free(ah, btcoex_hw->wlanactive_gpio);
	184	}
	185	EXPORT_SYMBOL(ath9k_hw_btcoex_deinit);
	186
d3c83ac1 SM	187	void ath9k_hw_btcoex_init_mci(struct ath_hw *ah)
	188	{
	189	ah->btcoex_hw.mci.ready = false;
	190	ah->btcoex_hw.mci.bt_state = 0;
	191	ah->btcoex_hw.mci.bt_ver_major = 3;
	192	ah->btcoex_hw.mci.bt_ver_minor = 0;
	193	ah->btcoex_hw.mci.bt_version_known = false;
	194	ah->btcoex_hw.mci.update_2g5g = true;
	195	ah->btcoex_hw.mci.is_2g = true;
	196	ah->btcoex_hw.mci.wlan_channels_update = false;
	197	ah->btcoex_hw.mci.wlan_channels[0] = 0x00000000;
	198	ah->btcoex_hw.mci.wlan_channels[1] = 0xffffffff;
	199	ah->btcoex_hw.mci.wlan_channels[2] = 0xffffffff;
	200	ah->btcoex_hw.mci.wlan_channels[3] = 0x7fffffff;
	201	ah->btcoex_hw.mci.query_bt = true;
	202	ah->btcoex_hw.mci.unhalt_bt_gpm = true;
	203	ah->btcoex_hw.mci.halted_bt_gpm = false;
	204	ah->btcoex_hw.mci.need_flush_btinfo = false;
	205	ah->btcoex_hw.mci.wlan_cal_seq = 0;
	206	ah->btcoex_hw.mci.wlan_cal_done = 0;
3c5c9d04	207	ah->btcoex_hw.mci.config = (AR_SREV_9462(ah)) ? 0x2201 : 0xa4c1;
d3c83ac1 SM	208	}
	209	EXPORT_SYMBOL(ath9k_hw_btcoex_init_mci);
	210
bc74bf8f LR	211	static void ath9k_hw_btcoex_enable_2wire(struct ath_hw *ah)
bc74bf8f LR	212	{
766ec4a9	213	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
bc74bf8f LR	214
bc74bf8f LR	215	/* Configure the desired GPIO port for TX_FRAME output */
b2d70d49 MP	216	ath9k_hw_gpio_request_out(ah, btcoex_hw->wlanactive_gpio,
	217	"ath9k-wlanactive",
	218	AR_GPIO_OUTPUT_MUX_AS_TX_FRAME);
bc74bf8f LR	219	}
bc74bf8f LR	220
5160b46f SM	221	/*
	222	* For AR9002, bt_weight/wlan_weight are used.
	223	* For AR9003 and above, stomp_type is used.
	224	*/
5e197292 LR	225	void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,
5e197292 LR	226	u32 bt_weight,
5160b46f SM	227	u32 wlan_weight,
5160b46f SM	228	enum ath_stomp_type stomp_type)
5e197292 LR	229	{
5e197292 LR	230	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
db60428b RM	231	struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
	232	u8 txprio_shift[] = { 24, 16, 16, 0 }; /* tx priority weight */
	233	bool concur_tx = (mci_hw->concur_tx && btcoex_hw->tx_prio[stomp_type]);
	234	const u32 *weight = ar9003_wlan_weights[stomp_type];
	235	int i;
5e197292	236
db60428b	237	if (!AR_SREV_9300_20_OR_LATER(ah)) {
5160b46f SM	238	btcoex_hw->bt_coex_weights =
	239	SM(bt_weight, AR_BTCOEX_BT_WGHT) \|
	240	SM(wlan_weight, AR_BTCOEX_WL_WGHT);
db60428b RM	241	return;
	242	}
	243
	244	if (AR_SREV_9462(ah) \|\| AR_SREV_9565(ah)) {
	245	enum ath_stomp_type stype =
	246	((stomp_type == ATH_BTCOEX_STOMP_LOW) &&
	247	btcoex_hw->mci.stomp_ftp) ?
	248	ATH_BTCOEX_STOMP_LOW_FTP : stomp_type;
	249	weight = mci_wlan_weights[stype];
5160b46f	250	}
db60428b RM	251
	252	for (i = 0; i < AR9300_NUM_WLAN_WEIGHTS; i++) {
	253	btcoex_hw->bt_weight[i] = AR9300_BT_WGHT;
	254	btcoex_hw->wlan_weight[i] = weight[i];
	255	if (concur_tx && i) {
	256	btcoex_hw->wlan_weight[i] &=
	257	~(0xff << txprio_shift[i-1]);
	258	btcoex_hw->wlan_weight[i] \|=
	259	(btcoex_hw->tx_prio[stomp_type] <<
	260	txprio_shift[i-1]);
	261	}
	262	}
	263	/* Last WLAN weight has to be adjusted wrt tx priority */
	264	if (concur_tx) {
	265	btcoex_hw->wlan_weight[i-1] &= ~(0xff << txprio_shift[i-1]);
	266	btcoex_hw->wlan_weight[i-1] \|= (btcoex_hw->tx_prio[stomp_type]
	267	<< txprio_shift[i-1]);
	268	}
	269
5e197292	270	}
7322fd19	271	EXPORT_SYMBOL(ath9k_hw_btcoex_set_weight);
5e197292	272
a6ef530f	273
bc74bf8f LR	274	static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah)
bc74bf8f LR	275	{
54f10b05	276	struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
21cb9879	277	u32 val;
54f10b05	278	int i;
bc74bf8f LR	279
	280	/*
	281	* Program coex mode and weight registers to
	282	* enable coex 3-wire
	283	*/
54f10b05 RM	284	REG_WRITE(ah, AR_BT_COEX_MODE, btcoex->bt_coex_mode);
54f10b05 RM	285	REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex->bt_coex_mode2);
bc74bf8f	286
a6ef530f	287	if (AR_SREV_9300_20_OR_LATER(ah)) {
54f10b05 RM	288	REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS0, btcoex->wlan_weight[0]);
	289	REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS1, btcoex->wlan_weight[1]);
	290	for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
	291	REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS(i),
	292	btcoex->bt_weight[i]);
a6ef530f	293	} else
54f10b05	294	REG_WRITE(ah, AR_BT_COEX_WEIGHT, btcoex->bt_coex_weights);
a6ef530f	295
21cb9879 VN	296	if (AR_SREV_9271(ah)) {
	297	val = REG_READ(ah, 0x50040);
	298	val &= 0xFFFFFEFF;
	299	REG_WRITE(ah, 0x50040, val);
	300	}
	301
bc74bf8f LR	302	REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1);
	303	REG_RMW_FIELD(ah, AR_PCU_MISC, AR_PCU_BT_ANT_PREVENT_RX, 0);
	304
b2d70d49 MP	305	ath9k_hw_gpio_request_out(ah, btcoex->wlanactive_gpio,
	306	"ath9k-wlanactive",
	307	AR_GPIO_OUTPUT_MUX_AS_RX_CLEAR_EXTERNAL);
bc74bf8f LR	308	}
bc74bf8f LR	309
8227bf45 RM	310	static void ath9k_hw_btcoex_enable_mci(struct ath_hw *ah)
	311	{
	312	struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
	313	int i;
	314
	315	for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
	316	REG_WRITE(ah, AR_MCI_COEX_WL_WEIGHTS(i),
	317	btcoex->wlan_weight[i]);
	318
	319	REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1);
	320	btcoex->enabled = true;
	321	}
	322
e1ff147d SM	323	static void ath9k_hw_btcoex_disable_mci(struct ath_hw *ah)
	324	{
	325	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
	326	int i;
	327
	328	ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
	329
	330	for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
	331	REG_WRITE(ah, AR_MCI_COEX_WL_WEIGHTS(i),
	332	btcoex_hw->wlan_weight[i]);
	333	}
	334
17d50d1d VT	335	void ath9k_hw_btcoex_enable(struct ath_hw *ah)
17d50d1d VT	336	{
766ec4a9	337	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
f14462c6	338
8a309305	339	switch (ath9k_hw_get_btcoex_scheme(ah)) {
bc74bf8f	340	case ATH_BTCOEX_CFG_NONE:
8a309305	341	return;
bc74bf8f LR	342	case ATH_BTCOEX_CFG_2WIRE:
	343	ath9k_hw_btcoex_enable_2wire(ah);
	344	break;
	345	case ATH_BTCOEX_CFG_3WIRE:
	346	ath9k_hw_btcoex_enable_3wire(ah);
	347	break;
e1ff147d SM	348	case ATH_BTCOEX_CFG_MCI:
	349	ath9k_hw_btcoex_enable_mci(ah);
	350	break;
1773912b VT	351	}
1773912b VT	352
e1ff147d SM	353	if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI) {
	354	REG_RMW(ah, AR_GPIO_PDPU,
	355	(0x2 << (btcoex_hw->btactive_gpio * 2)),
	356	(0x3 << (btcoex_hw->btactive_gpio * 2)));
	357	}
17d50d1d	358
766ec4a9	359	ah->btcoex_hw.enabled = true;
17d50d1d	360	}
7322fd19	361	EXPORT_SYMBOL(ath9k_hw_btcoex_enable);
17d50d1d VT	362
	363	void ath9k_hw_btcoex_disable(struct ath_hw *ah)
	364	{
766ec4a9	365	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
54f10b05	366	int i;
f14462c6	367
8227bf45	368	btcoex_hw->enabled = false;
e1ff147d SM	369
	370	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_MCI) {
	371	ath9k_hw_btcoex_disable_mci(ah);
0466e254	372	return;
8227bf45	373	}
e1ff147d	374
30b81898 SM	375	if (!AR_SREV_9300_20_OR_LATER(ah))
30b81898 SM	376	ath9k_hw_set_gpio(ah, btcoex_hw->wlanactive_gpio, 0);
17d50d1d	377
b2d70d49 MP	378	ath9k_hw_gpio_request_out(ah, btcoex_hw->wlanactive_gpio,
b2d70d49 MP	379	NULL, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
17d50d1d	380
766ec4a9	381	if (btcoex_hw->scheme == ATH_BTCOEX_CFG_3WIRE) {
1773912b	382	REG_WRITE(ah, AR_BT_COEX_MODE, AR_BT_QUIET \| AR_BT_MODE);
1773912b	383	REG_WRITE(ah, AR_BT_COEX_MODE2, 0);
a6ef530f VN	384
	385	if (AR_SREV_9300_20_OR_LATER(ah)) {
	386	REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS0, 0);
	387	REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS1, 0);
54f10b05 RM	388	for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
54f10b05 RM	389	REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS(i), 0);
a6ef530f VN	390	} else
	391	REG_WRITE(ah, AR_BT_COEX_WEIGHT, 0);
	392
1773912b	393	}
17d50d1d	394	}
7322fd19	395	EXPORT_SYMBOL(ath9k_hw_btcoex_disable);
978f78bf	396
978f78bf VN	397	/*
	398	* Configures appropriate weight based on stomp type.
	399	*/
	400	void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
	401	enum ath_stomp_type stomp_type)
	402	{
	403	if (AR_SREV_9300_20_OR_LATER(ah)) {
5160b46f	404	ath9k_hw_btcoex_set_weight(ah, 0, 0, stomp_type);
978f78bf VN	405	return;
	406	}
	407
	408	switch (stomp_type) {
	409	case ATH_BTCOEX_STOMP_ALL:
	410	ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
5160b46f	411	AR_STOMP_ALL_WLAN_WGHT, 0);
978f78bf VN	412	break;
	413	case ATH_BTCOEX_STOMP_LOW:
	414	ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
5160b46f	415	AR_STOMP_LOW_WLAN_WGHT, 0);
978f78bf VN	416	break;
	417	case ATH_BTCOEX_STOMP_NONE:
	418	ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
5160b46f	419	AR_STOMP_NONE_WLAN_WGHT, 0);
978f78bf VN	420	break;
978f78bf VN	421	default:
d2182b69	422	ath_dbg(ath9k_hw_common(ah), BTCOEX, "Invalid Stomptype\n");
978f78bf VN	423	break;
978f78bf VN	424	}
978f78bf VN	425	}
978f78bf VN	426	EXPORT_SYMBOL(ath9k_hw_btcoex_bt_stomp);
db60428b RM	427
	428	void ath9k_hw_btcoex_set_concur_txprio(struct ath_hw ah, u8 stomp_txprio)
	429	{
	430	struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
	431	int i;
	432
	433	for (i = 0; i < ATH_BTCOEX_STOMP_MAX; i++)
	434	btcoex->tx_prio[i] = stomp_txprio[i];
	435	}
	436	EXPORT_SYMBOL(ath9k_hw_btcoex_set_concur_txprio);