1 files changed, 55 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/btcoex.c b/drivers/net/wireless/ath/ath9k/btcoex.c
new file mode 100644
index 000000000000..abaf92d8074c
--- /dev/null
+++ b/drivers/net/wireless/ath/ath9k/btcoex.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 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"
+
+void ath9k_hw_btcoex_init(struct ath_hw *ah)
+{
+        /* 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,
+                        ah->btactive_gpio);
+
+        /* Configure the desired gpio port for input */
+        ath9k_hw_cfg_gpio_input(ah, ah->btactive_gpio);
+}
+
+void ath9k_hw_btcoex_enable(struct ath_hw *ah)
+{
+        /* Configure the desired GPIO port for TX_FRAME output */
+        ath9k_hw_cfg_output(ah, ah->wlanactive_gpio,
+                            AR_GPIO_OUTPUT_MUX_AS_TX_FRAME);
+
+        ah->ah_sc->sc_flags |= SC_OP_BTCOEX_ENABLED;
+}
+
+void ath9k_hw_btcoex_disable(struct ath_hw *ah)
+{
+        ath9k_hw_set_gpio(ah, ah->wlanactive_gpio, 0);
+
+        ath9k_hw_cfg_output(ah, ah->wlanactive_gpio,
+                        AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+
+        ah->ah_sc->sc_flags &= ~SC_OP_BTCOEX_ENABLED;
+}