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 #define AR9300_NUM_BT_WEIGHTS   4
40 #define AR9300_NUM_WLAN_WEIGHTS 4
41 /* Defines the BT AR_BT_COEX_WGHT used */
42 enum ath_stomp_type {
43 	ATH_BTCOEX_STOMP_ALL,
44 	ATH_BTCOEX_STOMP_LOW,
45 	ATH_BTCOEX_STOMP_NONE,
46 	ATH_BTCOEX_STOMP_LOW_FTP,
47 	ATH_BTCOEX_STOMP_MAX
48 };
49 
50 enum ath_btcoex_scheme {
51 	ATH_BTCOEX_CFG_NONE,
52 	ATH_BTCOEX_CFG_2WIRE,
53 	ATH_BTCOEX_CFG_3WIRE,
54 	ATH_BTCOEX_CFG_MCI,
55 };
56 
57 struct ath9k_hw_mci {
58 	u32 raw_intr;
59 	u32 rx_msg_intr;
60 	u32 cont_status;
61 	u32 gpm_addr;
62 	u32 gpm_len;
63 	u32 gpm_idx;
64 	u32 sched_addr;
65 	u32 wlan_channels[4];
66 	u32 wlan_cal_seq;
67 	u32 wlan_cal_done;
68 	u32 config;
69 	u8 *gpm_buf;
70 	bool ready;
71 	bool update_2g5g;
72 	bool is_2g;
73 	bool query_bt;
74 	bool unhalt_bt_gpm; /* need send UNHALT */
75 	bool halted_bt_gpm; /* HALT sent */
76 	bool need_flush_btinfo;
77 	bool bt_version_known;
78 	bool wlan_channels_update;
79 	u8 wlan_ver_major;
80 	u8 wlan_ver_minor;
81 	u8 bt_ver_major;
82 	u8 bt_ver_minor;
83 	u8 bt_state;
84 };
85 
86 struct ath_btcoex_hw {
87 	enum ath_btcoex_scheme scheme;
88 	struct ath9k_hw_mci mci;
89 	bool enabled;
90 	u8 wlanactive_gpio;
91 	u8 btactive_gpio;
92 	u8 btpriority_gpio;
93 	u32 bt_coex_mode; 	/* Register setting for AR_BT_COEX_MODE */
94 	u32 bt_coex_weights; 	/* Register setting for AR_BT_COEX_WEIGHT */
95 	u32 bt_coex_mode2; 	/* Register setting for AR_BT_COEX_MODE2 */
96 	u32 bt_weight[AR9300_NUM_BT_WEIGHTS];
97 	u32 wlan_weight[AR9300_NUM_WLAN_WEIGHTS];
98 };
99 
100 void ath9k_hw_btcoex_init_scheme(struct ath_hw *ah);
101 void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah);
102 void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah);
103 void ath9k_hw_btcoex_init_mci(struct ath_hw *ah);
104 void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum);
105 void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,
106 				u32 bt_weight,
107 				u32 wlan_weight);
108 void ath9k_hw_btcoex_disable(struct ath_hw *ah);
109 void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
110 			      enum ath_stomp_type stomp_type);
111 
112 #endif
113