2 * Copyright (c) 2009-2011 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.
17 #include <linux/export.h>
21 ATH_BT_COEX_MODE_LEGACY
, /* legacy rx_clear mode */
22 ATH_BT_COEX_MODE_UNSLOTTED
, /* untimed/unslotted mode */
23 ATH_BT_COEX_MODE_SLOTTED
, /* slotted mode */
24 ATH_BT_COEX_MODE_DISABLED
, /* coexistence disabled */
27 struct ath_btcoex_config
{
29 bool bt_txstate_extend
;
30 bool bt_txframe_extend
;
31 enum ath_bt_mode bt_mode
; /* coexistence mode */
32 bool bt_quiet_collision
;
33 bool bt_rxclear_polarity
; /* invert rx_clear as WLAN_ACTIVE*/
35 u8 bt_first_slot_time
;
36 bool bt_hold_rx_clear
;
39 static const u32 ar9003_wlan_weights
[ATH_BTCOEX_STOMP_MAX
]
40 [AR9300_NUM_WLAN_WEIGHTS
] = {
41 { 0xfffffff0, 0xfffffff0, 0xfffffff0, 0xfffffff0 }, /* STOMP_ALL */
42 { 0x88888880, 0x88888880, 0x88888880, 0x88888880 }, /* STOMP_LOW */
43 { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* STOMP_NONE */
46 static const u32 ar9462_wlan_weights
[ATH_BTCOEX_STOMP_MAX
]
47 [AR9300_NUM_WLAN_WEIGHTS
] = {
48 { 0x01017d01, 0x41414101, 0x41414101, 0x41414141 }, /* STOMP_ALL */
49 { 0x01017d01, 0x3b3b3b01, 0x3b3b3b01, 0x3b3b3b3b }, /* STOMP_LOW */
50 { 0x01017d01, 0x01010101, 0x01010101, 0x01010101 }, /* STOMP_NONE */
51 { 0x01017d01, 0x013b0101, 0x3b3b0101, 0x3b3b013b }, /* STOMP_LOW_FTP */
54 void ath9k_hw_init_btcoex_hw(struct ath_hw
*ah
, int qnum
)
56 struct ath_btcoex_hw
*btcoex_hw
= &ah
->btcoex_hw
;
57 const struct ath_btcoex_config ath_bt_config
= {
59 .bt_txstate_extend
= true,
60 .bt_txframe_extend
= true,
61 .bt_mode
= ATH_BT_COEX_MODE_SLOTTED
,
62 .bt_quiet_collision
= true,
63 .bt_rxclear_polarity
= true,
64 .bt_priority_time
= 2,
65 .bt_first_slot_time
= 5,
66 .bt_hold_rx_clear
= true,
69 bool rxclear_polarity
= ath_bt_config
.bt_rxclear_polarity
;
71 if (AR_SREV_9300_20_OR_LATER(ah
))
72 rxclear_polarity
= !ath_bt_config
.bt_rxclear_polarity
;
74 btcoex_hw
->bt_coex_mode
=
75 (btcoex_hw
->bt_coex_mode
& AR_BT_QCU_THRESH
) |
76 SM(ath_bt_config
.bt_time_extend
, AR_BT_TIME_EXTEND
) |
77 SM(ath_bt_config
.bt_txstate_extend
, AR_BT_TXSTATE_EXTEND
) |
78 SM(ath_bt_config
.bt_txframe_extend
, AR_BT_TX_FRAME_EXTEND
) |
79 SM(ath_bt_config
.bt_mode
, AR_BT_MODE
) |
80 SM(ath_bt_config
.bt_quiet_collision
, AR_BT_QUIET
) |
81 SM(rxclear_polarity
, AR_BT_RX_CLEAR_POLARITY
) |
82 SM(ath_bt_config
.bt_priority_time
, AR_BT_PRIORITY_TIME
) |
83 SM(ath_bt_config
.bt_first_slot_time
, AR_BT_FIRST_SLOT_TIME
) |
84 SM(qnum
, AR_BT_QCU_THRESH
);
86 btcoex_hw
->bt_coex_mode2
=
87 SM(ath_bt_config
.bt_hold_rx_clear
, AR_BT_HOLD_RX_CLEAR
) |
88 SM(ATH_BTCOEX_BMISS_THRESH
, AR_BT_BCN_MISS_THRESH
) |
91 for (i
= 0; i
< 32; i
++) {
92 idx
= (debruijn32
<< i
) >> 27;
93 ah
->hw_gen_timers
.gen_timer_index
[idx
] = i
;
96 EXPORT_SYMBOL(ath9k_hw_init_btcoex_hw
);
98 void ath9k_hw_btcoex_init_2wire(struct ath_hw
*ah
)
100 struct ath_btcoex_hw
*btcoex_hw
= &ah
->btcoex_hw
;
102 /* connect bt_active to baseband */
103 REG_CLR_BIT(ah
, AR_GPIO_INPUT_EN_VAL
,
104 (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_DEF
|
105 AR_GPIO_INPUT_EN_VAL_BT_FREQUENCY_DEF
));
107 REG_SET_BIT(ah
, AR_GPIO_INPUT_EN_VAL
,
108 AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB
);
110 /* Set input mux for bt_active to gpio pin */
111 REG_RMW_FIELD(ah
, AR_GPIO_INPUT_MUX1
,
112 AR_GPIO_INPUT_MUX1_BT_ACTIVE
,
113 btcoex_hw
->btactive_gpio
);
115 /* Configure the desired gpio port for input */
116 ath9k_hw_cfg_gpio_input(ah
, btcoex_hw
->btactive_gpio
);
118 EXPORT_SYMBOL(ath9k_hw_btcoex_init_2wire
);
120 void ath9k_hw_btcoex_init_3wire(struct ath_hw
*ah
)
122 struct ath_btcoex_hw
*btcoex_hw
= &ah
->btcoex_hw
;
125 REG_SET_BIT(ah
, AR_GPIO_INPUT_EN_VAL
,
126 (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_BB
|
127 AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB
));
129 /* Set input mux for bt_prority_async and
130 * bt_active_async to GPIO pins */
131 REG_RMW_FIELD(ah
, AR_GPIO_INPUT_MUX1
,
132 AR_GPIO_INPUT_MUX1_BT_ACTIVE
,
133 btcoex_hw
->btactive_gpio
);
135 REG_RMW_FIELD(ah
, AR_GPIO_INPUT_MUX1
,
136 AR_GPIO_INPUT_MUX1_BT_PRIORITY
,
137 btcoex_hw
->btpriority_gpio
);
139 /* Configure the desired GPIO ports for input */
141 ath9k_hw_cfg_gpio_input(ah
, btcoex_hw
->btactive_gpio
);
142 ath9k_hw_cfg_gpio_input(ah
, btcoex_hw
->btpriority_gpio
);
144 EXPORT_SYMBOL(ath9k_hw_btcoex_init_3wire
);
146 static void ath9k_hw_btcoex_enable_2wire(struct ath_hw
*ah
)
148 struct ath_btcoex_hw
*btcoex_hw
= &ah
->btcoex_hw
;
150 /* Configure the desired GPIO port for TX_FRAME output */
151 ath9k_hw_cfg_output(ah
, btcoex_hw
->wlanactive_gpio
,
152 AR_GPIO_OUTPUT_MUX_AS_TX_FRAME
);
155 void ath9k_hw_btcoex_set_weight(struct ath_hw
*ah
,
159 struct ath_btcoex_hw
*btcoex_hw
= &ah
->btcoex_hw
;
161 btcoex_hw
->bt_coex_weights
= SM(bt_weight
, AR_BTCOEX_BT_WGHT
) |
162 SM(wlan_weight
, AR_BTCOEX_WL_WGHT
);
164 EXPORT_SYMBOL(ath9k_hw_btcoex_set_weight
);
167 static void ath9k_hw_btcoex_enable_3wire(struct ath_hw
*ah
)
169 struct ath_btcoex_hw
*btcoex
= &ah
->btcoex_hw
;
174 * Program coex mode and weight registers to
177 REG_WRITE(ah
, AR_BT_COEX_MODE
, btcoex
->bt_coex_mode
);
178 REG_WRITE(ah
, AR_BT_COEX_MODE2
, btcoex
->bt_coex_mode2
);
181 if (AR_SREV_9300_20_OR_LATER(ah
)) {
182 REG_WRITE(ah
, AR_BT_COEX_WL_WEIGHTS0
, btcoex
->wlan_weight
[0]);
183 REG_WRITE(ah
, AR_BT_COEX_WL_WEIGHTS1
, btcoex
->wlan_weight
[1]);
184 for (i
= 0; i
< AR9300_NUM_BT_WEIGHTS
; i
++)
185 REG_WRITE(ah
, AR_BT_COEX_BT_WEIGHTS(i
),
186 btcoex
->bt_weight
[i
]);
188 REG_WRITE(ah
, AR_BT_COEX_WEIGHT
, btcoex
->bt_coex_weights
);
192 if (AR_SREV_9271(ah
)) {
193 val
= REG_READ(ah
, 0x50040);
195 REG_WRITE(ah
, 0x50040, val
);
198 REG_RMW_FIELD(ah
, AR_QUIET1
, AR_QUIET1_QUIET_ACK_CTS_ENABLE
, 1);
199 REG_RMW_FIELD(ah
, AR_PCU_MISC
, AR_PCU_BT_ANT_PREVENT_RX
, 0);
201 ath9k_hw_cfg_output(ah
, btcoex
->wlanactive_gpio
,
202 AR_GPIO_OUTPUT_MUX_AS_RX_CLEAR_EXTERNAL
);
205 static void ath9k_hw_btcoex_enable_mci(struct ath_hw
*ah
)
207 struct ath_btcoex_hw
*btcoex
= &ah
->btcoex_hw
;
210 for (i
= 0; i
< AR9300_NUM_BT_WEIGHTS
; i
++)
211 REG_WRITE(ah
, AR_MCI_COEX_WL_WEIGHTS(i
),
212 btcoex
->wlan_weight
[i
]);
214 REG_RMW_FIELD(ah
, AR_QUIET1
, AR_QUIET1_QUIET_ACK_CTS_ENABLE
, 1);
215 btcoex
->enabled
= true;
218 void ath9k_hw_btcoex_enable(struct ath_hw
*ah
)
220 struct ath_btcoex_hw
*btcoex_hw
= &ah
->btcoex_hw
;
222 switch (btcoex_hw
->scheme
) {
223 case ATH_BTCOEX_CFG_NONE
:
225 case ATH_BTCOEX_CFG_2WIRE
:
226 ath9k_hw_btcoex_enable_2wire(ah
);
228 case ATH_BTCOEX_CFG_3WIRE
:
229 ath9k_hw_btcoex_enable_3wire(ah
);
231 case ATH_BTCOEX_CFG_MCI
:
232 ath9k_hw_btcoex_enable_mci(ah
);
236 REG_RMW(ah
, AR_GPIO_PDPU
,
237 (0x2 << (btcoex_hw
->btactive_gpio
* 2)),
238 (0x3 << (btcoex_hw
->btactive_gpio
* 2)));
240 ah
->btcoex_hw
.enabled
= true;
242 EXPORT_SYMBOL(ath9k_hw_btcoex_enable
);
244 void ath9k_hw_btcoex_disable(struct ath_hw
*ah
)
246 struct ath_btcoex_hw
*btcoex_hw
= &ah
->btcoex_hw
;
249 btcoex_hw
->enabled
= false;
250 if (btcoex_hw
->scheme
== ATH_BTCOEX_CFG_MCI
) {
251 ath9k_hw_btcoex_bt_stomp(ah
, ATH_BTCOEX_STOMP_NONE
);
252 for (i
= 0; i
< AR9300_NUM_BT_WEIGHTS
; i
++)
253 REG_WRITE(ah
, AR_MCI_COEX_WL_WEIGHTS(i
),
254 btcoex_hw
->wlan_weight
[i
]);
256 ath9k_hw_set_gpio(ah
, btcoex_hw
->wlanactive_gpio
, 0);
258 ath9k_hw_cfg_output(ah
, btcoex_hw
->wlanactive_gpio
,
259 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
261 if (btcoex_hw
->scheme
== ATH_BTCOEX_CFG_3WIRE
) {
262 REG_WRITE(ah
, AR_BT_COEX_MODE
, AR_BT_QUIET
| AR_BT_MODE
);
263 REG_WRITE(ah
, AR_BT_COEX_MODE2
, 0);
265 if (AR_SREV_9300_20_OR_LATER(ah
)) {
266 REG_WRITE(ah
, AR_BT_COEX_WL_WEIGHTS0
, 0);
267 REG_WRITE(ah
, AR_BT_COEX_WL_WEIGHTS1
, 0);
268 for (i
= 0; i
< AR9300_NUM_BT_WEIGHTS
; i
++)
269 REG_WRITE(ah
, AR_BT_COEX_BT_WEIGHTS(i
), 0);
271 REG_WRITE(ah
, AR_BT_COEX_WEIGHT
, 0);
275 EXPORT_SYMBOL(ath9k_hw_btcoex_disable
);
277 static void ar9003_btcoex_bt_stomp(struct ath_hw
*ah
,
278 enum ath_stomp_type stomp_type
)
280 struct ath_btcoex_hw
*btcoex
= &ah
->btcoex_hw
;
281 const u32
*weight
= AR_SREV_9462(ah
) ? ar9003_wlan_weights
[stomp_type
] :
282 ar9462_wlan_weights
[stomp_type
];
285 for (i
= 0; i
< AR9300_NUM_WLAN_WEIGHTS
; i
++) {
286 btcoex
->bt_weight
[i
] = AR9300_BT_WGHT
;
287 btcoex
->wlan_weight
[i
] = weight
[i
];
292 * Configures appropriate weight based on stomp type.
294 void ath9k_hw_btcoex_bt_stomp(struct ath_hw
*ah
,
295 enum ath_stomp_type stomp_type
)
297 if (AR_SREV_9300_20_OR_LATER(ah
)) {
298 ar9003_btcoex_bt_stomp(ah
, stomp_type
);
302 switch (stomp_type
) {
303 case ATH_BTCOEX_STOMP_ALL
:
304 ath9k_hw_btcoex_set_weight(ah
, AR_BT_COEX_WGHT
,
305 AR_STOMP_ALL_WLAN_WGHT
);
307 case ATH_BTCOEX_STOMP_LOW
:
308 ath9k_hw_btcoex_set_weight(ah
, AR_BT_COEX_WGHT
,
309 AR_STOMP_LOW_WLAN_WGHT
);
311 case ATH_BTCOEX_STOMP_NONE
:
312 ath9k_hw_btcoex_set_weight(ah
, AR_BT_COEX_WGHT
,
313 AR_STOMP_NONE_WLAN_WGHT
);
316 ath_dbg(ath9k_hw_common(ah
), BTCOEX
, "Invalid Stomptype\n");
320 EXPORT_SYMBOL(ath9k_hw_btcoex_bt_stomp
);