diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/btcoex.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/btcoex.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/btcoex.h b/drivers/net/wireless/ath/ath9k/btcoex.h new file mode 100644 index 00000000000..297b027fd3c --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/btcoex.h @@ -0,0 +1,100 @@ +/* + * Copyright (c) 2009 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef BTCOEX_H +#define BTCOEX_H + +#define ATH_WLANACTIVE_GPIO 5 +#define ATH_BTACTIVE_GPIO 6 +#define ATH_BTPRIORITY_GPIO 7 + +#define ATH_BTCOEX_DEF_BT_PERIOD 45 +#define ATH_BTCOEX_DEF_DUTY_CYCLE 55 +#define ATH_BTCOEX_BMISS_THRESH 50 + +#define ATH_BT_PRIORITY_TIME_THRESHOLD 1000 /* ms */ +#define ATH_BT_CNT_THRESHOLD 3 + +enum ath_btcoex_scheme { + ATH_BTCOEX_CFG_NONE, + ATH_BTCOEX_CFG_2WIRE, + ATH_BTCOEX_CFG_3WIRE, +}; + +enum ath_stomp_type { + ATH_BTCOEX_NO_STOMP, + ATH_BTCOEX_STOMP_ALL, + ATH_BTCOEX_STOMP_LOW, + ATH_BTCOEX_STOMP_NONE +}; + +enum ath_bt_mode { + ATH_BT_COEX_MODE_LEGACY, /* legacy rx_clear mode */ + ATH_BT_COEX_MODE_UNSLOTTED, /* untimed/unslotted mode */ + ATH_BT_COEX_MODE_SLOTTED, /* slotted mode */ + ATH_BT_COEX_MODE_DISALBED, /* coexistence disabled */ +}; + +struct ath_btcoex_config { + u8 bt_time_extend; + bool bt_txstate_extend; + bool bt_txframe_extend; + enum ath_bt_mode bt_mode; /* coexistence mode */ + bool bt_quiet_collision; + bool bt_rxclear_polarity; /* invert rx_clear as WLAN_ACTIVE*/ + u8 bt_priority_time; + u8 bt_first_slot_time; + bool bt_hold_rx_clear; +}; + +struct ath_btcoex_info { + enum ath_btcoex_scheme btcoex_scheme; + u8 wlanactive_gpio; + u8 btactive_gpio; + u8 btpriority_gpio; + u8 bt_duty_cycle; /* BT duty cycle in percentage */ + int bt_stomp_type; /* Types of BT stomping */ + u32 bt_coex_mode; /* Register setting for AR_BT_COEX_MODE */ + u32 bt_coex_weights; /* Register setting for AR_BT_COEX_WEIGHT */ + u32 bt_coex_mode2; /* Register setting for AR_BT_COEX_MODE2 */ + u32 btcoex_no_stomp; /* in usec */ + u32 btcoex_period; /* in usec */ + u32 bt_priority_cnt; + unsigned long bt_priority_time; + bool hw_timer_enabled; + spinlock_t btcoex_lock; + struct timer_list period_timer; /* Timer for BT period */ + struct ath_gen_timer *no_stomp_timer; /*Timer for no BT stomping*/ +}; + +bool ath_btcoex_supported(u16 subsysid); +int ath9k_hw_btcoex_init(struct ath_hw *ah); +void ath9k_hw_btcoex_enable(struct ath_hw *ah); +void ath9k_hw_btcoex_disable(struct ath_hw *ah); +void ath_btcoex_timer_resume(struct ath_softc *sc, + struct ath_btcoex_info *btinfo); +void ath_btcoex_timer_pause(struct ath_softc *sc, + struct ath_btcoex_info *btinfo); + +static inline void ath_btcoex_set_weight(struct ath_btcoex_info *btcoex_info, + u32 bt_weight, + u32 wlan_weight) +{ + btcoex_info->bt_coex_weights = SM(bt_weight, AR_BTCOEX_BT_WGHT) | + SM(wlan_weight, AR_BTCOEX_WL_WGHT); +} + +#endif |