1 /*
2  * Copyright (c) 2009 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 
17 #ifndef BTCOEX_H
18 #define BTCOEX_H
19 
20 #include "hw.h"
21 
22 #define ATH_WLANACTIVE_GPIO	5
23 #define ATH_BTACTIVE_GPIO	6
24 #define ATH_BTPRIORITY_GPIO	7
25 
26 #define ATH_BTCOEX_DEF_BT_PERIOD  45
27 #define ATH_BTCOEX_DEF_DUTY_CYCLE 55
28 #define ATH_BTCOEX_BMISS_THRESH   50
29 
30 #define ATH_BT_PRIORITY_TIME_THRESHOLD 1000 /* ms */
31 #define ATH_BT_CNT_THRESHOLD	       3
32 
33 enum ath_btcoex_scheme {
34 	ATH_BTCOEX_CFG_NONE,
35 	ATH_BTCOEX_CFG_2WIRE,
36 	ATH_BTCOEX_CFG_3WIRE,
37 };
38 
39 struct ath_btcoex_hw {
40 	enum ath_btcoex_scheme scheme;
41 	bool enabled;
42 	u8 wlanactive_gpio;
43 	u8 btactive_gpio;
44 	u8 btpriority_gpio;
45 	u32 bt_coex_mode; 	/* Register setting for AR_BT_COEX_MODE */
46 	u32 bt_coex_weights; 	/* Register setting for AR_BT_COEX_WEIGHT */
47 	u32 bt_coex_mode2; 	/* Register setting for AR_BT_COEX_MODE2 */
48 };
49 
50 bool ath9k_hw_btcoex_supported(struct ath_hw *ah);
51 void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah);
52 void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah);
53 void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum);
54 void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,
55 				u32 bt_weight,
56 				u32 wlan_weight);
57 void ath9k_hw_btcoex_enable(struct ath_hw *ah);
58 void ath9k_hw_btcoex_disable(struct ath_hw *ah);
59 
60 #endif
61