diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/btcoex.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/btcoex.c | 241 |
1 files changed, 220 insertions, 21 deletions
diff --git a/drivers/net/wireless/ath/ath9k/btcoex.c b/drivers/net/wireless/ath/ath9k/btcoex.c index d33bf204c99..3dfc2c7f1f0 100644 --- a/drivers/net/wireless/ath/ath9k/btcoex.c +++ b/drivers/net/wireless/ath/ath9k/btcoex.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2009 Atheros Communications Inc. + * Copyright (c) 2009-2011 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 @@ -14,13 +14,14 @@ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#include <linux/export.h> #include "hw.h" 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 */ + ATH_BT_COEX_MODE_DISABLED, /* coexistence disabled */ }; struct ath_btcoex_config { @@ -35,6 +36,21 @@ struct ath_btcoex_config { bool bt_hold_rx_clear; }; +static const u32 ar9003_wlan_weights[ATH_BTCOEX_STOMP_MAX] + [AR9300_NUM_WLAN_WEIGHTS] = { + { 0xfffffff0, 0xfffffff0, 0xfffffff0, 0xfffffff0 }, /* STOMP_ALL */ + { 0x88888880, 0x88888880, 0x88888880, 0x88888880 }, /* STOMP_LOW */ + { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* STOMP_NONE */ +}; + +static const u32 mci_wlan_weights[ATH_BTCOEX_STOMP_MAX] + [AR9300_NUM_WLAN_WEIGHTS] = { + { 0x01017d01, 0x41414101, 0x41414101, 0x41414141 }, /* STOMP_ALL */ + { 0x01017d01, 0x3b3b3b01, 0x3b3b3b01, 0x3b3b3b3b }, /* STOMP_LOW */ + { 0x01017d01, 0x01010101, 0x01010101, 0x01010101 }, /* STOMP_NONE */ + { 0x01017d01, 0x013b0101, 0x3b3b0101, 0x3b3b013b }, /* STOMP_LOW_FTP */ + { 0xffffff01, 0xffffffff, 0xffffff01, 0xffffffff }, /* STOMP_AUDIO */ +}; void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum) { @@ -50,7 +66,10 @@ void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum) .bt_first_slot_time = 5, .bt_hold_rx_clear = true, }; - u32 i; + bool rxclear_polarity = ath_bt_config.bt_rxclear_polarity; + + if (AR_SREV_9300_20_OR_LATER(ah)) + rxclear_polarity = !ath_bt_config.bt_rxclear_polarity; btcoex_hw->bt_coex_mode = (btcoex_hw->bt_coex_mode & AR_BT_QCU_THRESH) | @@ -59,7 +78,7 @@ void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum) SM(ath_bt_config.bt_txframe_extend, AR_BT_TX_FRAME_EXTEND) | SM(ath_bt_config.bt_mode, AR_BT_MODE) | SM(ath_bt_config.bt_quiet_collision, AR_BT_QUIET) | - SM(ath_bt_config.bt_rxclear_polarity, AR_BT_RX_CLEAR_POLARITY) | + SM(rxclear_polarity, AR_BT_RX_CLEAR_POLARITY) | SM(ath_bt_config.bt_priority_time, AR_BT_PRIORITY_TIME) | SM(ath_bt_config.bt_first_slot_time, AR_BT_FIRST_SLOT_TIME) | SM(qnum, AR_BT_QCU_THRESH); @@ -68,12 +87,41 @@ void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum) SM(ath_bt_config.bt_hold_rx_clear, AR_BT_HOLD_RX_CLEAR) | SM(ATH_BTCOEX_BMISS_THRESH, AR_BT_BCN_MISS_THRESH) | AR_BT_DISABLE_BT_ANT; - - for (i = 0; i < 32; i++) - ah->hw_gen_timers.gen_timer_index[(debruijn32 << i) >> 27] = i; } EXPORT_SYMBOL(ath9k_hw_init_btcoex_hw); +void ath9k_hw_btcoex_init_scheme(struct ath_hw *ah) +{ + struct ath_common *common = ath9k_hw_common(ah); + struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; + + /* + * Check if BTCOEX is globally disabled. + */ + if (!common->btcoex_enabled) { + btcoex_hw->scheme = ATH_BTCOEX_CFG_NONE; + return; + } + + if (AR_SREV_9300_20_OR_LATER(ah)) { + btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE; + btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9300; + btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9300; + btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO_9300; + } else if (AR_SREV_9280_20_OR_LATER(ah)) { + btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9280; + btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9280; + + if (AR_SREV_9285(ah)) { + btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE; + btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO_9285; + } else { + btcoex_hw->scheme = ATH_BTCOEX_CFG_2WIRE; + } + } +} +EXPORT_SYMBOL(ath9k_hw_btcoex_init_scheme); + void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah) { struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; @@ -122,6 +170,30 @@ void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah) } EXPORT_SYMBOL(ath9k_hw_btcoex_init_3wire); +void ath9k_hw_btcoex_init_mci(struct ath_hw *ah) +{ + ah->btcoex_hw.mci.ready = false; + ah->btcoex_hw.mci.bt_state = 0; + ah->btcoex_hw.mci.bt_ver_major = 3; + ah->btcoex_hw.mci.bt_ver_minor = 0; + ah->btcoex_hw.mci.bt_version_known = false; + ah->btcoex_hw.mci.update_2g5g = true; + ah->btcoex_hw.mci.is_2g = true; + ah->btcoex_hw.mci.wlan_channels_update = false; + ah->btcoex_hw.mci.wlan_channels[0] = 0x00000000; + ah->btcoex_hw.mci.wlan_channels[1] = 0xffffffff; + ah->btcoex_hw.mci.wlan_channels[2] = 0xffffffff; + ah->btcoex_hw.mci.wlan_channels[3] = 0x7fffffff; + ah->btcoex_hw.mci.query_bt = true; + ah->btcoex_hw.mci.unhalt_bt_gpm = true; + ah->btcoex_hw.mci.halted_bt_gpm = false; + ah->btcoex_hw.mci.need_flush_btinfo = false; + ah->btcoex_hw.mci.wlan_cal_seq = 0; + ah->btcoex_hw.mci.wlan_cal_done = 0; + ah->btcoex_hw.mci.config = (AR_SREV_9462(ah)) ? 0x2201 : 0xa4c1; +} +EXPORT_SYMBOL(ath9k_hw_btcoex_init_mci); + static void ath9k_hw_btcoex_enable_2wire(struct ath_hw *ah) { struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; @@ -131,29 +203,83 @@ static void ath9k_hw_btcoex_enable_2wire(struct ath_hw *ah) AR_GPIO_OUTPUT_MUX_AS_TX_FRAME); } +/* + * For AR9002, bt_weight/wlan_weight are used. + * For AR9003 and above, stomp_type is used. + */ void ath9k_hw_btcoex_set_weight(struct ath_hw *ah, u32 bt_weight, - u32 wlan_weight) + u32 wlan_weight, + enum ath_stomp_type stomp_type) { struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; + struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci; + u8 txprio_shift[] = { 24, 16, 16, 0 }; /* tx priority weight */ + bool concur_tx = (mci_hw->concur_tx && btcoex_hw->tx_prio[stomp_type]); + const u32 *weight = ar9003_wlan_weights[stomp_type]; + int i; + + if (!AR_SREV_9300_20_OR_LATER(ah)) { + btcoex_hw->bt_coex_weights = + SM(bt_weight, AR_BTCOEX_BT_WGHT) | + SM(wlan_weight, AR_BTCOEX_WL_WGHT); + return; + } + + if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) { + enum ath_stomp_type stype = + ((stomp_type == ATH_BTCOEX_STOMP_LOW) && + btcoex_hw->mci.stomp_ftp) ? + ATH_BTCOEX_STOMP_LOW_FTP : stomp_type; + weight = mci_wlan_weights[stype]; + } + + for (i = 0; i < AR9300_NUM_WLAN_WEIGHTS; i++) { + btcoex_hw->bt_weight[i] = AR9300_BT_WGHT; + btcoex_hw->wlan_weight[i] = weight[i]; + if (concur_tx && i) { + btcoex_hw->wlan_weight[i] &= + ~(0xff << txprio_shift[i-1]); + btcoex_hw->wlan_weight[i] |= + (btcoex_hw->tx_prio[stomp_type] << + txprio_shift[i-1]); + } + } + /* Last WLAN weight has to be adjusted wrt tx priority */ + if (concur_tx) { + btcoex_hw->wlan_weight[i-1] &= ~(0xff << txprio_shift[i-1]); + btcoex_hw->wlan_weight[i-1] |= (btcoex_hw->tx_prio[stomp_type] + << txprio_shift[i-1]); + } - btcoex_hw->bt_coex_weights = SM(bt_weight, AR_BTCOEX_BT_WGHT) | - SM(wlan_weight, AR_BTCOEX_WL_WGHT); } EXPORT_SYMBOL(ath9k_hw_btcoex_set_weight); + static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah) { - struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; + struct ath_btcoex_hw *btcoex = &ah->btcoex_hw; u32 val; + int i; /* * Program coex mode and weight registers to * enable coex 3-wire */ - REG_WRITE(ah, AR_BT_COEX_MODE, btcoex_hw->bt_coex_mode); - REG_WRITE(ah, AR_BT_COEX_WEIGHT, btcoex_hw->bt_coex_weights); - REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex_hw->bt_coex_mode2); + REG_WRITE(ah, AR_BT_COEX_MODE, btcoex->bt_coex_mode); + REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex->bt_coex_mode2); + + + if (AR_SREV_9300_20_OR_LATER(ah)) { + REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS0, btcoex->wlan_weight[0]); + REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS1, btcoex->wlan_weight[1]); + for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++) + REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS(i), + btcoex->bt_weight[i]); + } else + REG_WRITE(ah, AR_BT_COEX_WEIGHT, btcoex->bt_coex_weights); + + if (AR_SREV_9271(ah)) { val = REG_READ(ah, 0x50040); @@ -164,21 +290,38 @@ static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah) REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1); REG_RMW_FIELD(ah, AR_PCU_MISC, AR_PCU_BT_ANT_PREVENT_RX, 0); - ath9k_hw_cfg_output(ah, btcoex_hw->wlanactive_gpio, + ath9k_hw_cfg_output(ah, btcoex->wlanactive_gpio, AR_GPIO_OUTPUT_MUX_AS_RX_CLEAR_EXTERNAL); } +static void ath9k_hw_btcoex_enable_mci(struct ath_hw *ah) +{ + struct ath_btcoex_hw *btcoex = &ah->btcoex_hw; + int i; + + for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++) + REG_WRITE(ah, AR_MCI_COEX_WL_WEIGHTS(i), + btcoex->wlan_weight[i]); + + REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1); + btcoex->enabled = true; +} + void ath9k_hw_btcoex_enable(struct ath_hw *ah) { struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; - switch (btcoex_hw->scheme) { + switch (ath9k_hw_get_btcoex_scheme(ah)) { case ATH_BTCOEX_CFG_NONE: - break; + return; case ATH_BTCOEX_CFG_2WIRE: ath9k_hw_btcoex_enable_2wire(ah); break; case ATH_BTCOEX_CFG_3WIRE: + if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) { + ath9k_hw_btcoex_enable_mci(ah); + return; + } ath9k_hw_btcoex_enable_3wire(ah); break; } @@ -194,7 +337,16 @@ EXPORT_SYMBOL(ath9k_hw_btcoex_enable); void ath9k_hw_btcoex_disable(struct ath_hw *ah) { struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; - + int i; + + btcoex_hw->enabled = false; + if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) { + ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE); + for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++) + REG_WRITE(ah, AR_MCI_COEX_WL_WEIGHTS(i), + btcoex_hw->wlan_weight[i]); + return; + } ath9k_hw_set_gpio(ah, btcoex_hw->wlanactive_gpio, 0); ath9k_hw_cfg_output(ah, btcoex_hw->wlanactive_gpio, @@ -202,10 +354,57 @@ void ath9k_hw_btcoex_disable(struct ath_hw *ah) if (btcoex_hw->scheme == ATH_BTCOEX_CFG_3WIRE) { REG_WRITE(ah, AR_BT_COEX_MODE, AR_BT_QUIET | AR_BT_MODE); - REG_WRITE(ah, AR_BT_COEX_WEIGHT, 0); REG_WRITE(ah, AR_BT_COEX_MODE2, 0); - } - ah->btcoex_hw.enabled = false; + if (AR_SREV_9300_20_OR_LATER(ah)) { + REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS0, 0); + REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS1, 0); + for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++) + REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS(i), 0); + } else + REG_WRITE(ah, AR_BT_COEX_WEIGHT, 0); + + } } EXPORT_SYMBOL(ath9k_hw_btcoex_disable); + +/* + * Configures appropriate weight based on stomp type. + */ +void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah, + enum ath_stomp_type stomp_type) +{ + if (AR_SREV_9300_20_OR_LATER(ah)) { + ath9k_hw_btcoex_set_weight(ah, 0, 0, stomp_type); + return; + } + + switch (stomp_type) { + case ATH_BTCOEX_STOMP_ALL: + ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, + AR_STOMP_ALL_WLAN_WGHT, 0); + break; + case ATH_BTCOEX_STOMP_LOW: + ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, + AR_STOMP_LOW_WLAN_WGHT, 0); + break; + case ATH_BTCOEX_STOMP_NONE: + ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, + AR_STOMP_NONE_WLAN_WGHT, 0); + break; + default: + ath_dbg(ath9k_hw_common(ah), BTCOEX, "Invalid Stomptype\n"); + break; + } +} +EXPORT_SYMBOL(ath9k_hw_btcoex_bt_stomp); + +void ath9k_hw_btcoex_set_concur_txprio(struct ath_hw *ah, u8 *stomp_txprio) +{ + struct ath_btcoex_hw *btcoex = &ah->btcoex_hw; + int i; + + for (i = 0; i < ATH_BTCOEX_STOMP_MAX; i++) + btcoex->tx_prio[i] = stomp_txprio[i]; +} +EXPORT_SYMBOL(ath9k_hw_btcoex_set_concur_txprio); |