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.
19 static const struct ath_btcoex_config ath_bt_config = { 0, true, true,
20 ATH_BT_COEX_MODE_SLOTTED, true, true, 2, 5, true };
22 static const u16 ath_subsysid_tbl[] = {
23 AR9280_COEX2WIRE_SUBSYSID,
24 AT9285_COEX3WIRE_SA_SUBSYSID,
25 AT9285_COEX3WIRE_DA_SUBSYSID
29 * Checks the subsystem id of the device to see if it
32 bool ath_btcoex_supported(u16 subsysid)
39 for (i = 0; i < ARRAY_SIZE(ath_subsysid_tbl); i++)
40 if (subsysid == ath_subsysid_tbl[i])
46 void ath9k_hw_init_btcoex_hw_info(struct ath_hw *ah, int qnum)
48 struct ath_btcoex_info *btcoex_info = &ah->btcoex_info;
51 btcoex_info->bt_coex_mode =
52 (btcoex_info->bt_coex_mode & AR_BT_QCU_THRESH) |
53 SM(ath_bt_config.bt_time_extend, AR_BT_TIME_EXTEND) |
54 SM(ath_bt_config.bt_txstate_extend, AR_BT_TXSTATE_EXTEND) |
55 SM(ath_bt_config.bt_txframe_extend, AR_BT_TX_FRAME_EXTEND) |
56 SM(ath_bt_config.bt_mode, AR_BT_MODE) |
57 SM(ath_bt_config.bt_quiet_collision, AR_BT_QUIET) |
58 SM(ath_bt_config.bt_rxclear_polarity, AR_BT_RX_CLEAR_POLARITY) |
59 SM(ath_bt_config.bt_priority_time, AR_BT_PRIORITY_TIME) |
60 SM(ath_bt_config.bt_first_slot_time, AR_BT_FIRST_SLOT_TIME) |
61 SM(qnum, AR_BT_QCU_THRESH);
63 btcoex_info->bt_coex_mode2 =
64 SM(ath_bt_config.bt_hold_rx_clear, AR_BT_HOLD_RX_CLEAR) |
65 SM(ATH_BTCOEX_BMISS_THRESH, AR_BT_BCN_MISS_THRESH) |
68 btcoex_info->bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
70 for (i = 0; i < 32; i++)
71 ah->hw_gen_timers.gen_timer_index[(debruijn32 << i) >> 27] = i;
74 void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah)
76 struct ath_btcoex_info *btcoex_info = &ah->btcoex_info;
78 /* connect bt_active to baseband */
79 REG_CLR_BIT(ah, AR_GPIO_INPUT_EN_VAL,
80 (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_DEF |
81 AR_GPIO_INPUT_EN_VAL_BT_FREQUENCY_DEF));
83 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
84 AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB);
86 /* Set input mux for bt_active to gpio pin */
87 REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
88 AR_GPIO_INPUT_MUX1_BT_ACTIVE,
89 btcoex_info->btactive_gpio);
91 /* Configure the desired gpio port for input */
92 ath9k_hw_cfg_gpio_input(ah, btcoex_info->btactive_gpio);
95 void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah)
97 struct ath_btcoex_info *btcoex_info = &ah->btcoex_info;
100 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
101 (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_BB |
102 AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB));
104 /* Set input mux for bt_prority_async and
105 * bt_active_async to GPIO pins */
106 REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
107 AR_GPIO_INPUT_MUX1_BT_ACTIVE,
108 btcoex_info->btactive_gpio);
110 REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
111 AR_GPIO_INPUT_MUX1_BT_PRIORITY,
112 btcoex_info->btpriority_gpio);
114 /* Configure the desired GPIO ports for input */
116 ath9k_hw_cfg_gpio_input(ah, btcoex_info->btactive_gpio);
117 ath9k_hw_cfg_gpio_input(ah, btcoex_info->btpriority_gpio);
120 static void ath9k_hw_btcoex_enable_2wire(struct ath_hw *ah)
122 struct ath_btcoex_info *btcoex_info = &ah->btcoex_info;
124 /* Configure the desired GPIO port for TX_FRAME output */
125 ath9k_hw_cfg_output(ah, btcoex_info->wlanactive_gpio,
126 AR_GPIO_OUTPUT_MUX_AS_TX_FRAME);
129 static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah)
131 struct ath_btcoex_info *btcoex_info = &ah->btcoex_info;
134 * Program coex mode and weight registers to
137 REG_WRITE(ah, AR_BT_COEX_MODE, btcoex_info->bt_coex_mode);
138 REG_WRITE(ah, AR_BT_COEX_WEIGHT, btcoex_info->bt_coex_weights);
139 REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex_info->bt_coex_mode2);
141 REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1);
142 REG_RMW_FIELD(ah, AR_PCU_MISC, AR_PCU_BT_ANT_PREVENT_RX, 0);
144 ath9k_hw_cfg_output(ah, btcoex_info->wlanactive_gpio,
145 AR_GPIO_OUTPUT_MUX_AS_RX_CLEAR_EXTERNAL);
148 void ath9k_hw_btcoex_enable(struct ath_hw *ah)
150 struct ath_btcoex_info *btcoex_info = &ah->btcoex_info;
152 switch (btcoex_info->btcoex_scheme) {
153 case ATH_BTCOEX_CFG_NONE:
155 case ATH_BTCOEX_CFG_2WIRE:
156 ath9k_hw_btcoex_enable_2wire(ah);
158 case ATH_BTCOEX_CFG_3WIRE:
159 ath9k_hw_btcoex_enable_3wire(ah);
163 REG_RMW(ah, AR_GPIO_PDPU,
164 (0x2 << (btcoex_info->btactive_gpio * 2)),
165 (0x3 << (btcoex_info->btactive_gpio * 2)));
167 ah->btcoex_info.enabled = true;
170 void ath9k_hw_btcoex_disable(struct ath_hw *ah)
172 struct ath_btcoex_info *btcoex_info = &ah->btcoex_info;
174 ath9k_hw_set_gpio(ah, btcoex_info->wlanactive_gpio, 0);
176 ath9k_hw_cfg_output(ah, btcoex_info->wlanactive_gpio,
177 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
179 if (btcoex_info->btcoex_scheme == ATH_BTCOEX_CFG_3WIRE) {
180 REG_WRITE(ah, AR_BT_COEX_MODE, AR_BT_QUIET | AR_BT_MODE);
181 REG_WRITE(ah, AR_BT_COEX_WEIGHT, 0);
182 REG_WRITE(ah, AR_BT_COEX_MODE2, 0);
185 ah->btcoex_info.enabled = false;