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 ATH_BTCOEX_RX_WAIT_TIME 100
40#define ATH_BTCOEX_STOMP_FTP_THRESH 5
41
42#define ATH_BTCOEX_HT20_MAX_TXPOWER 0x14
43#define ATH_BTCOEX_HT40_MAX_TXPOWER 0x10
44
45#define AR9300_NUM_BT_WEIGHTS 4
46#define AR9300_NUM_WLAN_WEIGHTS 4
47
48#define ATH_AIC_MAX_BT_CHANNEL 79
49
50/* Defines the BT AR_BT_COEX_WGHT used */
51enum ath_stomp_type {
52 ATH_BTCOEX_STOMP_ALL,
53 ATH_BTCOEX_STOMP_LOW,
54 ATH_BTCOEX_STOMP_NONE,
55 ATH_BTCOEX_STOMP_LOW_FTP,
56 ATH_BTCOEX_STOMP_AUDIO,
57 ATH_BTCOEX_STOMP_MAX
58};
59
60enum ath_btcoex_scheme {
61 ATH_BTCOEX_CFG_NONE,
62 ATH_BTCOEX_CFG_2WIRE,
63 ATH_BTCOEX_CFG_3WIRE,
64 ATH_BTCOEX_CFG_MCI,
65};
66
67struct ath9k_hw_mci {
68 u32 raw_intr;
69 u32 rx_msg_intr;
70 u32 cont_status;
71 u32 gpm_addr;
72 u32 gpm_len;
73 u32 gpm_idx;
74 u32 sched_addr;
75 u32 wlan_channels[4];
76 u32 wlan_cal_seq;
77 u32 wlan_cal_done;
78 u32 config;
79 u8 *gpm_buf;
80 bool ready;
81 bool update_2g5g;
82 bool is_2g;
83 bool query_bt;
84 bool unhalt_bt_gpm; /* need send UNHALT */
85 bool halted_bt_gpm; /* HALT sent */
86 bool need_flush_btinfo;
87 bool bt_version_known;
88 bool wlan_channels_update;
89 u8 wlan_ver_major;
90 u8 wlan_ver_minor;
91 u8 bt_ver_major;
92 u8 bt_ver_minor;
93 u8 bt_state;
94 u8 stomp_ftp;
95 bool concur_tx;
96 u32 last_recovery;
97};
98
99struct ath9k_hw_aic {
100 bool aic_enabled;
101 u8 aic_cal_state;
102 u8 aic_caled_chan;
103 u32 aic_sram[ATH_AIC_MAX_BT_CHANNEL];
104 u32 aic_cal_start_time;
105};
106
107struct ath_btcoex_hw {
108 enum ath_btcoex_scheme scheme;
109 struct ath9k_hw_mci mci;
110 struct ath9k_hw_aic aic;
111 bool enabled;
112 u8 wlanactive_gpio;
113 u8 btactive_gpio;
114 u8 btpriority_gpio;
115 u32 bt_coex_mode; /* Register setting for AR_BT_COEX_MODE */
116 u32 bt_coex_weights; /* Register setting for AR_BT_COEX_WEIGHT */
117 u32 bt_coex_mode2; /* Register setting for AR_BT_COEX_MODE2 */
118 u32 bt_coex_mode3; /* Register setting for AR_BT_COEX_MODE3 */
119 u32 bt_weight[AR9300_NUM_BT_WEIGHTS];
120 u32 wlan_weight[AR9300_NUM_WLAN_WEIGHTS];
121 u8 tx_prio[ATH_BTCOEX_STOMP_MAX];
122};
123
124void ath9k_hw_btcoex_init_scheme(struct ath_hw *ah);
125void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah);
126void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah);
127void ath9k_hw_btcoex_deinit(struct ath_hw *ah);
128void ath9k_hw_btcoex_init_mci(struct ath_hw *ah);
129void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum);
130void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,
131 u32 bt_weight,
132 u32 wlan_weight,
133 enum ath_stomp_type stomp_type);
134void ath9k_hw_btcoex_disable(struct ath_hw *ah);
135void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
136 enum ath_stomp_type stomp_type);
137void ath9k_hw_btcoex_set_concur_txprio(struct ath_hw *ah, u8 *stomp_txprio);
138
139#endif
140

source code of linux/drivers/net/wireless/ath/ath9k/btcoex.h