2 * Copyright (c) 2009 Atheros Communications Inc.
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.
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.
20 #define ATH_WLANACTIVE_GPIO 5
21 #define ATH_BTACTIVE_GPIO 6
22 #define ATH_BTPRIORITY_GPIO 7
24 #define ATH_BTCOEX_DEF_BT_PERIOD 45
25 #define ATH_BTCOEX_DEF_DUTY_CYCLE 55
26 #define ATH_BTCOEX_BMISS_THRESH 50
28 #define ATH_BT_PRIORITY_TIME_THRESHOLD 1000 /* ms */
29 #define ATH_BT_CNT_THRESHOLD 3
31 enum ath_btcoex_scheme {
45 ATH_BT_COEX_MODE_LEGACY, /* legacy rx_clear mode */
46 ATH_BT_COEX_MODE_UNSLOTTED, /* untimed/unslotted mode */
47 ATH_BT_COEX_MODE_SLOTTED, /* slotted mode */
48 ATH_BT_COEX_MODE_DISALBED, /* coexistence disabled */
51 struct ath_btcoex_config {
53 bool bt_txstate_extend;
54 bool bt_txframe_extend;
55 enum ath_bt_mode bt_mode; /* coexistence mode */
56 bool bt_quiet_collision;
57 bool bt_rxclear_polarity; /* invert rx_clear as WLAN_ACTIVE*/
59 u8 bt_first_slot_time;
60 bool bt_hold_rx_clear;
63 struct ath_btcoex_info {
64 enum ath_btcoex_scheme btcoex_scheme;
68 u8 bt_duty_cycle; /* BT duty cycle in percentage */
69 int bt_stomp_type; /* Types of BT stomping */
70 u32 bt_coex_mode; /* Register setting for AR_BT_COEX_MODE */
71 u32 bt_coex_weights; /* Register setting for AR_BT_COEX_WEIGHT */
72 u32 bt_coex_mode2; /* Register setting for AR_BT_COEX_MODE2 */
73 u32 btcoex_no_stomp; /* in usec */
74 u32 btcoex_period; /* in usec */
76 unsigned long bt_priority_time;
77 bool hw_timer_enabled;
78 spinlock_t btcoex_lock;
79 struct timer_list period_timer; /* Timer for BT period */
80 struct ath_gen_timer *no_stomp_timer; /*Timer for no BT stomping*/
83 bool ath_btcoex_supported(u16 subsysid);
84 int ath9k_hw_btcoex_init(struct ath_hw *ah);
85 void ath9k_hw_btcoex_enable(struct ath_hw *ah);
86 void ath9k_hw_btcoex_disable(struct ath_hw *ah);
87 void ath_btcoex_timer_resume(struct ath_softc *sc,
88 struct ath_btcoex_info *btinfo);
89 void ath_btcoex_timer_pause(struct ath_softc *sc,
90 struct ath_btcoex_info *btinfo);
92 static inline void ath_btcoex_set_weight(struct ath_btcoex_info *btcoex_info,
96 btcoex_info->bt_coex_weights = SM(bt_weight, AR_BTCOEX_BT_WGHT) |
97 SM(wlan_weight, AR_BTCOEX_WL_WGHT);