xref: /linux/drivers/net/wireless/ath/ath9k/btcoex.h (revision f2ee442115c9b6219083c019939a9cc0c9abb2f8)
1 /*
2  * Copyright (c) 2009-2011 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_9280     5
23 #define ATH_BTACTIVE_GPIO_9280       6
24 #define ATH_BTPRIORITY_GPIO_9285     7
25 
26 #define ATH_WLANACTIVE_GPIO_9300     5
27 #define ATH_BTACTIVE_GPIO_9300       4
28 #define ATH_BTPRIORITY_GPIO_9300     8
29 
30 #define ATH_BTCOEX_DEF_BT_PERIOD  45
31 #define ATH_BTCOEX_DEF_DUTY_CYCLE 55
32 #define ATH_BTCOEX_BTSCAN_DUTY_CYCLE 90
33 #define ATH_BTCOEX_BMISS_THRESH   50
34 
35 #define ATH_BT_PRIORITY_TIME_THRESHOLD 1000 /* ms */
36 #define ATH_BT_CNT_THRESHOLD	       3
37 #define ATH_BT_CNT_SCAN_THRESHOLD      15
38 
39 /* Defines the BT AR_BT_COEX_WGHT used */
40 enum ath_stomp_type {
41 	ATH_BTCOEX_NO_STOMP,
42 	ATH_BTCOEX_STOMP_ALL,
43 	ATH_BTCOEX_STOMP_LOW,
44 	ATH_BTCOEX_STOMP_NONE
45 };
46 
47 enum ath_btcoex_scheme {
48 	ATH_BTCOEX_CFG_NONE,
49 	ATH_BTCOEX_CFG_2WIRE,
50 	ATH_BTCOEX_CFG_3WIRE,
51 };
52 
53 struct ath_btcoex_hw {
54 	enum ath_btcoex_scheme scheme;
55 	bool enabled;
56 	u8 wlanactive_gpio;
57 	u8 btactive_gpio;
58 	u8 btpriority_gpio;
59 	u32 bt_coex_mode; 	/* Register setting for AR_BT_COEX_MODE */
60 	u32 bt_coex_weights; 	/* Register setting for AR_BT_COEX_WEIGHT */
61 	u32 bt_coex_mode2; 	/* Register setting for AR_BT_COEX_MODE2 */
62 };
63 
64 void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah);
65 void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah);
66 void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum);
67 void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,
68 				u32 bt_weight,
69 				u32 wlan_weight);
70 void ath9k_hw_btcoex_enable(struct ath_hw *ah);
71 void ath9k_hw_btcoex_disable(struct ath_hw *ah);
72 void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
73 			      enum ath_stomp_type stomp_type);
74 
75 #endif
76