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+/*
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+ * Copyright (c) 2009 Atheros Communications Inc.
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+ *
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+ * Permission to use, copy, modify, and/or distribute this software for any
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+ * purpose with or without fee is hereby granted, provided that the above
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+ * copyright notice and this permission notice appear in all copies.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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+ */
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+
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+#include "ath9k.h"
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+
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+void ath9k_hw_btcoex_init(struct ath_hw *ah)
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+{
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+ /* connect bt_active to baseband */
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+ REG_CLR_BIT(ah, AR_GPIO_INPUT_EN_VAL,
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+ (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_DEF |
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+ AR_GPIO_INPUT_EN_VAL_BT_FREQUENCY_DEF));
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+
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+ REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
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+ AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB);
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+
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+ /* Set input mux for bt_active to gpio pin */
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+ REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
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+ AR_GPIO_INPUT_MUX1_BT_ACTIVE,
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+ ah->btactive_gpio);
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+
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+ /* Configure the desired gpio port for input */
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+ ath9k_hw_cfg_gpio_input(ah, ah->btactive_gpio);
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+}
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+
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+void ath9k_hw_btcoex_enable(struct ath_hw *ah)
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+{
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+ /* Configure the desired GPIO port for TX_FRAME output */
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+ ath9k_hw_cfg_output(ah, ah->wlanactive_gpio,
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+ AR_GPIO_OUTPUT_MUX_AS_TX_FRAME);
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+
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+ ah->ah_sc->sc_flags |= SC_OP_BTCOEX_ENABLED;
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+}
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+
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+void ath9k_hw_btcoex_disable(struct ath_hw *ah)
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+{
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+ ath9k_hw_set_gpio(ah, ah->wlanactive_gpio, 0);
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+
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+ ath9k_hw_cfg_output(ah, ah->wlanactive_gpio,
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+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
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+
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+ ah->ah_sc->sc_flags &= ~SC_OP_BTCOEX_ENABLED;
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+}
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Vasanthakumar Thiagarajan