| /* |
| * 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 |
| * 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. |
| */ |
| |
| #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_DISABLED, /* 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; |
| }; |
| |
| 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 */ |
| }; |
| |
| void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum) |
| { |
| struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; |
| const struct ath_btcoex_config ath_bt_config = { |
| .bt_time_extend = 0, |
| .bt_txstate_extend = true, |
| .bt_txframe_extend = true, |
| .bt_mode = ATH_BT_COEX_MODE_SLOTTED, |
| .bt_quiet_collision = true, |
| .bt_rxclear_polarity = true, |
| .bt_priority_time = 2, |
| .bt_first_slot_time = 5, |
| .bt_hold_rx_clear = true, |
| }; |
| u32 i, idx; |
| 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) | |
| SM(ath_bt_config.bt_time_extend, AR_BT_TIME_EXTEND) | |
| SM(ath_bt_config.bt_txstate_extend, AR_BT_TXSTATE_EXTEND) | |
| 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(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); |
| |
| btcoex_hw->bt_coex_mode2 = |
| 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++) { |
| idx = (debruijn32 << i) >> 27; |
| ah->hw_gen_timers.gen_timer_index[idx] = 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; |
| |
| /* connect bt_active to baseband */ |
| REG_CLR_BIT(ah, AR_GPIO_INPUT_EN_VAL, |
| (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_DEF | |
| AR_GPIO_INPUT_EN_VAL_BT_FREQUENCY_DEF)); |
| |
| REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, |
| AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB); |
| |
| /* Set input mux for bt_active to gpio pin */ |
| REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1, |
| AR_GPIO_INPUT_MUX1_BT_ACTIVE, |
| btcoex_hw->btactive_gpio); |
| |
| /* Configure the desired gpio port for input */ |
| ath9k_hw_cfg_gpio_input(ah, btcoex_hw->btactive_gpio); |
| } |
| EXPORT_SYMBOL(ath9k_hw_btcoex_init_2wire); |
| |
| void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah) |
| { |
| struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; |
| |
| /* btcoex 3-wire */ |
| REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, |
| (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_BB | |
| AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB)); |
| |
| /* Set input mux for bt_prority_async and |
| * bt_active_async to GPIO pins */ |
| REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1, |
| AR_GPIO_INPUT_MUX1_BT_ACTIVE, |
| btcoex_hw->btactive_gpio); |
| |
| REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1, |
| AR_GPIO_INPUT_MUX1_BT_PRIORITY, |
| btcoex_hw->btpriority_gpio); |
| |
| /* Configure the desired GPIO ports for input */ |
| |
| ath9k_hw_cfg_gpio_input(ah, btcoex_hw->btactive_gpio); |
| ath9k_hw_cfg_gpio_input(ah, btcoex_hw->btpriority_gpio); |
| } |
| 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 = 0x2201; |
| } |
| 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; |
| |
| /* Configure the desired GPIO port for TX_FRAME output */ |
| ath9k_hw_cfg_output(ah, btcoex_hw->wlanactive_gpio, |
| 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, |
| enum ath_stomp_type stomp_type) |
| { |
| struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; |
| |
| if (AR_SREV_9300_20_OR_LATER(ah)) { |
| const u32 *weight = ar9003_wlan_weights[stomp_type]; |
| int i; |
| |
| if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) { |
| if ((stomp_type == ATH_BTCOEX_STOMP_LOW) && |
| btcoex_hw->mci.stomp_ftp) |
| stomp_type = ATH_BTCOEX_STOMP_LOW_FTP; |
| weight = mci_wlan_weights[stomp_type]; |
| } |
| |
| for (i = 0; i < AR9300_NUM_WLAN_WEIGHTS; i++) { |
| btcoex_hw->bt_weight[i] = AR9300_BT_WGHT; |
| btcoex_hw->wlan_weight[i] = weight[i]; |
| } |
| } else { |
| 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 = &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->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); |
| val &= 0xFFFFFEFF; |
| REG_WRITE(ah, 0x50040, val); |
| } |
| |
| 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->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 (ath9k_hw_get_btcoex_scheme(ah)) { |
| case ATH_BTCOEX_CFG_NONE: |
| 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; |
| } |
| |
| REG_RMW(ah, AR_GPIO_PDPU, |
| (0x2 << (btcoex_hw->btactive_gpio * 2)), |
| (0x3 << (btcoex_hw->btactive_gpio * 2))); |
| |
| ah->btcoex_hw.enabled = true; |
| } |
| 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, |
| AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
| |
| 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_MODE2, 0); |
| |
| 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); |