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Linux 4.4.145
[linux/fpc-iii.git] / drivers / net / wireless / ath / ath9k / ar9003_mci.c
blobaf5ee416a560dab726805c58850cddfe65291e03
1 /*
2 * Copyright (c) 2008-2011 Atheros Communications Inc.
3 *
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.
7 *
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.
15 */
16
17 #include <linux/export.h>
18 #include "hw.h"
19 #include "hw-ops.h"
20 #include "ar9003_phy.h"
21 #include "ar9003_mci.h"
22 #include "ar9003_aic.h"
23
24 static void ar9003_mci_reset_req_wakeup(struct ath_hw *ah)
25 {
26 REG_RMW_FIELD(ah, AR_MCI_COMMAND2,
27 AR_MCI_COMMAND2_RESET_REQ_WAKEUP, 1);
28 udelay(1);
29 REG_RMW_FIELD(ah, AR_MCI_COMMAND2,
30 AR_MCI_COMMAND2_RESET_REQ_WAKEUP, 0);
31 }
32
33 static int ar9003_mci_wait_for_interrupt(struct ath_hw *ah, u32 address,
34 u32 bit_position, int time_out)
35 {
36 struct ath_common *common = ath9k_hw_common(ah);
37
38 while (time_out) {
39 if (!(REG_READ(ah, address) & bit_position)) {
40 udelay(10);
41 time_out -= 10;
42
43 if (time_out < 0)
44 break;
45 else
46 continue;
47 }
48 REG_WRITE(ah, address, bit_position);
49
50 if (address != AR_MCI_INTERRUPT_RX_MSG_RAW)
51 break;
52
53 if (bit_position & AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE)
54 ar9003_mci_reset_req_wakeup(ah);
55
56 if (bit_position & (AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING |
57 AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING))
58 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
59 AR_MCI_INTERRUPT_REMOTE_SLEEP_UPDATE);
60
61 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW, AR_MCI_INTERRUPT_RX_MSG);
62 break;
63 }
64
65 if (time_out <= 0) {
66 ath_dbg(common, MCI,
67 "MCI Wait for Reg 0x%08x = 0x%08x timeout\n",
68 address, bit_position);
69 ath_dbg(common, MCI,
70 "MCI INT_RAW = 0x%08x, RX_MSG_RAW = 0x%08x\n",
71 REG_READ(ah, AR_MCI_INTERRUPT_RAW),
72 REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_RAW));
73 time_out = 0;
74 }
75
76 return time_out;
77 }
78
79 static void ar9003_mci_remote_reset(struct ath_hw *ah, bool wait_done)
80 {
81 u32 payload[4] = { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffff00};
82
83 ar9003_mci_send_message(ah, MCI_REMOTE_RESET, 0, payload, 16,
84 wait_done, false);
85 udelay(5);
86 }
87
88 static void ar9003_mci_send_lna_transfer(struct ath_hw *ah, bool wait_done)
89 {
90 u32 payload = 0x00000000;
91
92 ar9003_mci_send_message(ah, MCI_LNA_TRANS, 0, &payload, 1,
93 wait_done, false);
94 }
95
96 static void ar9003_mci_send_req_wake(struct ath_hw *ah, bool wait_done)
97 {
98 ar9003_mci_send_message(ah, MCI_REQ_WAKE, MCI_FLAG_DISABLE_TIMESTAMP,
99 NULL, 0, wait_done, false);
100 udelay(5);
101 }
102
103 static void ar9003_mci_send_sys_waking(struct ath_hw *ah, bool wait_done)
104 {
105 ar9003_mci_send_message(ah, MCI_SYS_WAKING, MCI_FLAG_DISABLE_TIMESTAMP,
106 NULL, 0, wait_done, false);
107 }
108
109 static void ar9003_mci_send_lna_take(struct ath_hw *ah, bool wait_done)
110 {
111 u32 payload = 0x70000000;
112
113 ar9003_mci_send_message(ah, MCI_LNA_TAKE, 0, &payload, 1,
114 wait_done, false);
115 }
116
117 static void ar9003_mci_send_sys_sleeping(struct ath_hw *ah, bool wait_done)
118 {
119 ar9003_mci_send_message(ah, MCI_SYS_SLEEPING,
120 MCI_FLAG_DISABLE_TIMESTAMP,
121 NULL, 0, wait_done, false);
122 }
123
124 static void ar9003_mci_send_coex_version_query(struct ath_hw *ah,
125 bool wait_done)
126 {
127 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
128 u32 payload[4] = {0, 0, 0, 0};
129
130 if (mci->bt_version_known ||
131 (mci->bt_state == MCI_BT_SLEEP))
132 return;
133
134 MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
135 MCI_GPM_COEX_VERSION_QUERY);
136 ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16, wait_done, true);
137 }
138
139 static void ar9003_mci_send_coex_version_response(struct ath_hw *ah,
140 bool wait_done)
141 {
142 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
143 u32 payload[4] = {0, 0, 0, 0};
144
145 MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
146 MCI_GPM_COEX_VERSION_RESPONSE);
147 *(((u8 *)payload) + MCI_GPM_COEX_B_MAJOR_VERSION) =
148 mci->wlan_ver_major;
149 *(((u8 *)payload) + MCI_GPM_COEX_B_MINOR_VERSION) =
150 mci->wlan_ver_minor;
151 ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16, wait_done, true);
152 }
153
154 static void ar9003_mci_send_coex_wlan_channels(struct ath_hw *ah,
155 bool wait_done)
156 {
157 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
158 u32 *payload = &mci->wlan_channels[0];
159
160 if (!mci->wlan_channels_update ||
161 (mci->bt_state == MCI_BT_SLEEP))
162 return;
163
164 MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
165 MCI_GPM_COEX_WLAN_CHANNELS);
166 ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16, wait_done, true);
167 MCI_GPM_SET_TYPE_OPCODE(payload, 0xff, 0xff);
168 }
169
170 static void ar9003_mci_send_coex_bt_status_query(struct ath_hw *ah,
171 bool wait_done, u8 query_type)
172 {
173 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
174 u32 payload[4] = {0, 0, 0, 0};
175 bool query_btinfo;
176
177 if (mci->bt_state == MCI_BT_SLEEP)
178 return;
179
180 query_btinfo = !!(query_type & (MCI_GPM_COEX_QUERY_BT_ALL_INFO |
181 MCI_GPM_COEX_QUERY_BT_TOPOLOGY));
182 MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
183 MCI_GPM_COEX_STATUS_QUERY);
184
185 *(((u8 *)payload) + MCI_GPM_COEX_B_BT_BITMAP) = query_type;
186
187 /*
188 * If bt_status_query message is not sent successfully,
189 * then need_flush_btinfo should be set again.
190 */
191 if (!ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16,
192 wait_done, true)) {
193 if (query_btinfo)
194 mci->need_flush_btinfo = true;
195 }
196
197 if (query_btinfo)
198 mci->query_bt = false;
199 }
200
201 static void ar9003_mci_send_coex_halt_bt_gpm(struct ath_hw *ah, bool halt,
202 bool wait_done)
203 {
204 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
205 u32 payload[4] = {0, 0, 0, 0};
206
207 MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
208 MCI_GPM_COEX_HALT_BT_GPM);
209
210 if (halt) {
211 mci->query_bt = true;
212 /* Send next unhalt no matter halt sent or not */
213 mci->unhalt_bt_gpm = true;
214 mci->need_flush_btinfo = true;
215 *(((u8 *)payload) + MCI_GPM_COEX_B_HALT_STATE) =
216 MCI_GPM_COEX_BT_GPM_HALT;
217 } else
218 *(((u8 *)payload) + MCI_GPM_COEX_B_HALT_STATE) =
219 MCI_GPM_COEX_BT_GPM_UNHALT;
220
221 ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16, wait_done, true);
222 }
223
224 static void ar9003_mci_prep_interface(struct ath_hw *ah)
225 {
226 struct ath_common *common = ath9k_hw_common(ah);
227 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
228 u32 saved_mci_int_en;
229 u32 mci_timeout = 150;
230
231 mci->bt_state = MCI_BT_SLEEP;
232 saved_mci_int_en = REG_READ(ah, AR_MCI_INTERRUPT_EN);
233
234 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, 0);
235 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
236 REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_RAW));
237 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
238 REG_READ(ah, AR_MCI_INTERRUPT_RAW));
239
240 ar9003_mci_remote_reset(ah, true);
241 ar9003_mci_send_req_wake(ah, true);
242
243 if (!ar9003_mci_wait_for_interrupt(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
244 AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING, 500))
245 goto clear_redunt;
246
247 mci->bt_state = MCI_BT_AWAKE;
248
249 /*
250 * we don't need to send more remote_reset at this moment.
251 * If BT receive first remote_reset, then BT HW will
252 * be cleaned up and will be able to receive req_wake
253 * and BT HW will respond sys_waking.
254 * In this case, WLAN will receive BT's HW sys_waking.
255 * Otherwise, if BT SW missed initial remote_reset,
256 * that remote_reset will still clean up BT MCI RX,
257 * and the req_wake will wake BT up,
258 * and BT SW will respond this req_wake with a remote_reset and
259 * sys_waking. In this case, WLAN will receive BT's SW
260 * sys_waking. In either case, BT's RX is cleaned up. So we
261 * don't need to reply BT's remote_reset now, if any.
262 * Similarly, if in any case, WLAN can receive BT's sys_waking,
263 * that means WLAN's RX is also fine.
264 */
265 ar9003_mci_send_sys_waking(ah, true);
266 udelay(10);
267
268 /*
269 * Set BT priority interrupt value to be 0xff to
270 * avoid having too many BT PRIORITY interrupts.
271 */
272 REG_WRITE(ah, AR_MCI_BT_PRI0, 0xFFFFFFFF);
273 REG_WRITE(ah, AR_MCI_BT_PRI1, 0xFFFFFFFF);
274 REG_WRITE(ah, AR_MCI_BT_PRI2, 0xFFFFFFFF);
275 REG_WRITE(ah, AR_MCI_BT_PRI3, 0xFFFFFFFF);
276 REG_WRITE(ah, AR_MCI_BT_PRI, 0X000000FF);
277
278 /*
279 * A contention reset will be received after send out
280 * sys_waking. Also BT priority interrupt bits will be set.
281 * Clear those bits before the next step.
282 */
283
284 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
285 AR_MCI_INTERRUPT_RX_MSG_CONT_RST);
286 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW, AR_MCI_INTERRUPT_BT_PRI);
287
288 if (mci->is_2g && MCI_ANT_ARCH_PA_LNA_SHARED(mci)) {
289 ar9003_mci_send_lna_transfer(ah, true);
290 udelay(5);
291 }
292
293 if (mci->is_2g && !mci->update_2g5g && MCI_ANT_ARCH_PA_LNA_SHARED(mci)) {
294 if (ar9003_mci_wait_for_interrupt(ah,
295 AR_MCI_INTERRUPT_RX_MSG_RAW,
296 AR_MCI_INTERRUPT_RX_MSG_LNA_INFO,
297 mci_timeout))
298 ath_dbg(common, MCI,
299 "MCI WLAN has control over the LNA & BT obeys it\n");
300 else
301 ath_dbg(common, MCI,
302 "MCI BT didn't respond to LNA_TRANS\n");
303 }
304
305 clear_redunt:
306 /* Clear the extra redundant SYS_WAKING from BT */
307 if ((mci->bt_state == MCI_BT_AWAKE) &&
308 (REG_READ_FIELD(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
309 AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING)) &&
310 (REG_READ_FIELD(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
311 AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING) == 0)) {
312 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
313 AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING);
314 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
315 AR_MCI_INTERRUPT_REMOTE_SLEEP_UPDATE);
316 }
317
318 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, saved_mci_int_en);
319 }
320
321 void ar9003_mci_set_full_sleep(struct ath_hw *ah)
322 {
323 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
324
325 if (ar9003_mci_state(ah, MCI_STATE_ENABLE) &&
326 (mci->bt_state != MCI_BT_SLEEP) &&
327 !mci->halted_bt_gpm) {
328 ar9003_mci_send_coex_halt_bt_gpm(ah, true, true);
329 }
330
331 mci->ready = false;
332 }
333
334 static void ar9003_mci_disable_interrupt(struct ath_hw *ah)
335 {
336 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, 0);
337 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
338 }
339
340 static void ar9003_mci_enable_interrupt(struct ath_hw *ah)
341 {
342 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, AR_MCI_INTERRUPT_DEFAULT);
343 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN,
344 AR_MCI_INTERRUPT_RX_MSG_DEFAULT);
345 }
346
347 static bool ar9003_mci_check_int(struct ath_hw *ah, u32 ints)
348 {
349 u32 intr;
350
351 intr = REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_RAW);
352 return ((intr & ints) == ints);
353 }
354
355 void ar9003_mci_get_interrupt(struct ath_hw *ah, u32 *raw_intr,
356 u32 *rx_msg_intr)
357 {
358 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
359
360 *raw_intr = mci->raw_intr;
361 *rx_msg_intr = mci->rx_msg_intr;
362
363 /* Clean int bits after the values are read. */
364 mci->raw_intr = 0;
365 mci->rx_msg_intr = 0;
366 }
367 EXPORT_SYMBOL(ar9003_mci_get_interrupt);
368
369 void ar9003_mci_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
370 {
371 struct ath_common *common = ath9k_hw_common(ah);
372 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
373 u32 raw_intr, rx_msg_intr;
374
375 rx_msg_intr = REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_RAW);
376 raw_intr = REG_READ(ah, AR_MCI_INTERRUPT_RAW);
377
378 if ((raw_intr == 0xdeadbeef) || (rx_msg_intr == 0xdeadbeef)) {
379 ath_dbg(common, MCI,
380 "MCI gets 0xdeadbeef during int processing\n");
381 } else {
382 mci->rx_msg_intr |= rx_msg_intr;
383 mci->raw_intr |= raw_intr;
384 *masked |= ATH9K_INT_MCI;
385
386 if (rx_msg_intr & AR_MCI_INTERRUPT_RX_MSG_CONT_INFO)
387 mci->cont_status = REG_READ(ah, AR_MCI_CONT_STATUS);
388
389 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW, rx_msg_intr);
390 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW, raw_intr);
391 }
392 }
393
394 static void ar9003_mci_2g5g_changed(struct ath_hw *ah, bool is_2g)
395 {
396 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
397
398 if (!mci->update_2g5g &&
399 (mci->is_2g != is_2g))
400 mci->update_2g5g = true;
401
402 mci->is_2g = is_2g;
403 }
404
405 static bool ar9003_mci_is_gpm_valid(struct ath_hw *ah, u32 msg_index)
406 {
407 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
408 u32 *payload;
409 u32 recv_type, offset;
410
411 if (msg_index == MCI_GPM_INVALID)
412 return false;
413
414 offset = msg_index << 4;
415
416 payload = (u32 *)(mci->gpm_buf + offset);
417 recv_type = MCI_GPM_TYPE(payload);
418
419 if (recv_type == MCI_GPM_RSVD_PATTERN)
420 return false;
421
422 return true;
423 }
424
425 static void ar9003_mci_observation_set_up(struct ath_hw *ah)
426 {
427 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
428
429 if (mci->config & ATH_MCI_CONFIG_MCI_OBS_MCI) {
430 ath9k_hw_cfg_output(ah, 3, AR_GPIO_OUTPUT_MUX_AS_MCI_WLAN_DATA);
431 ath9k_hw_cfg_output(ah, 2, AR_GPIO_OUTPUT_MUX_AS_MCI_WLAN_CLK);
432 ath9k_hw_cfg_output(ah, 1, AR_GPIO_OUTPUT_MUX_AS_MCI_BT_DATA);
433 ath9k_hw_cfg_output(ah, 0, AR_GPIO_OUTPUT_MUX_AS_MCI_BT_CLK);
434 } else if (mci->config & ATH_MCI_CONFIG_MCI_OBS_TXRX) {
435 ath9k_hw_cfg_output(ah, 3, AR_GPIO_OUTPUT_MUX_AS_WL_IN_TX);
436 ath9k_hw_cfg_output(ah, 2, AR_GPIO_OUTPUT_MUX_AS_WL_IN_RX);
437 ath9k_hw_cfg_output(ah, 1, AR_GPIO_OUTPUT_MUX_AS_BT_IN_TX);
438 ath9k_hw_cfg_output(ah, 0, AR_GPIO_OUTPUT_MUX_AS_BT_IN_RX);
439 ath9k_hw_cfg_output(ah, 5, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
440 } else if (mci->config & ATH_MCI_CONFIG_MCI_OBS_BT) {
441 ath9k_hw_cfg_output(ah, 3, AR_GPIO_OUTPUT_MUX_AS_BT_IN_TX);
442 ath9k_hw_cfg_output(ah, 2, AR_GPIO_OUTPUT_MUX_AS_BT_IN_RX);
443 ath9k_hw_cfg_output(ah, 1, AR_GPIO_OUTPUT_MUX_AS_MCI_BT_DATA);
444 ath9k_hw_cfg_output(ah, 0, AR_GPIO_OUTPUT_MUX_AS_MCI_BT_CLK);
445 } else
446 return;
447
448 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
449
450 REG_RMW_FIELD(ah, AR_PHY_GLB_CONTROL, AR_GLB_DS_JTAG_DISABLE, 1);
451 REG_RMW_FIELD(ah, AR_PHY_GLB_CONTROL, AR_GLB_WLAN_UART_INTF_EN, 0);
452 REG_SET_BIT(ah, AR_GLB_GPIO_CONTROL, ATH_MCI_CONFIG_MCI_OBS_GPIO);
453
454 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, AR_BTCOEX_CTRL2_GPIO_OBS_SEL, 0);
455 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, AR_BTCOEX_CTRL2_MAC_BB_OBS_SEL, 1);
456 REG_WRITE(ah, AR_OBS, 0x4b);
457 REG_RMW_FIELD(ah, AR_DIAG_SW, AR_DIAG_OBS_PT_SEL1, 0x03);
458 REG_RMW_FIELD(ah, AR_DIAG_SW, AR_DIAG_OBS_PT_SEL2, 0x01);
459 REG_RMW_FIELD(ah, AR_MACMISC, AR_MACMISC_MISC_OBS_BUS_LSB, 0x02);
460 REG_RMW_FIELD(ah, AR_MACMISC, AR_MACMISC_MISC_OBS_BUS_MSB, 0x03);
461 REG_RMW_FIELD(ah, AR_PHY_TEST_CTL_STATUS,
462 AR_PHY_TEST_CTL_DEBUGPORT_SEL, 0x07);
463 }
464
465 static bool ar9003_mci_send_coex_bt_flags(struct ath_hw *ah, bool wait_done,
466 u8 opcode, u32 bt_flags)
467 {
468 u32 pld[4] = {0, 0, 0, 0};
469
470 MCI_GPM_SET_TYPE_OPCODE(pld, MCI_GPM_COEX_AGENT,
471 MCI_GPM_COEX_BT_UPDATE_FLAGS);
472
473 *(((u8 *)pld) + MCI_GPM_COEX_B_BT_FLAGS_OP) = opcode;
474 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 0) = bt_flags & 0xFF;
475 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 1) = (bt_flags >> 8) & 0xFF;
476 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 2) = (bt_flags >> 16) & 0xFF;
477 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 3) = (bt_flags >> 24) & 0xFF;
478
479 return ar9003_mci_send_message(ah, MCI_GPM, 0, pld, 16,
480 wait_done, true);
481 }
482
483 static void ar9003_mci_sync_bt_state(struct ath_hw *ah)
484 {
485 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
486 u32 cur_bt_state;
487
488 cur_bt_state = ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP);
489
490 if (mci->bt_state != cur_bt_state)
491 mci->bt_state = cur_bt_state;
492
493 if (mci->bt_state != MCI_BT_SLEEP) {
494
495 ar9003_mci_send_coex_version_query(ah, true);
496 ar9003_mci_send_coex_wlan_channels(ah, true);
497
498 if (mci->unhalt_bt_gpm == true)
499 ar9003_mci_send_coex_halt_bt_gpm(ah, false, true);
500 }
501 }
502
503 void ar9003_mci_check_bt(struct ath_hw *ah)
504 {
505 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
506
507 if (!mci_hw->ready)
508 return;
509
510 /*
511 * check BT state again to make
512 * sure it's not changed.
513 */
514 ar9003_mci_sync_bt_state(ah);
515 ar9003_mci_2g5g_switch(ah, true);
516
517 if ((mci_hw->bt_state == MCI_BT_AWAKE) &&
518 (mci_hw->query_bt == true)) {
519 mci_hw->need_flush_btinfo = true;
520 }
521 }
522
523 static void ar9003_mci_process_gpm_extra(struct ath_hw *ah, u8 gpm_type,
524 u8 gpm_opcode, u32 *p_gpm)
525 {
526 struct ath_common *common = ath9k_hw_common(ah);
527 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
528 u8 *p_data = (u8 *) p_gpm;
529
530 if (gpm_type != MCI_GPM_COEX_AGENT)
531 return;
532
533 switch (gpm_opcode) {
534 case MCI_GPM_COEX_VERSION_QUERY:
535 ath_dbg(common, MCI, "MCI Recv GPM COEX Version Query\n");
536 ar9003_mci_send_coex_version_response(ah, true);
537 break;
538 case MCI_GPM_COEX_VERSION_RESPONSE:
539 ath_dbg(common, MCI, "MCI Recv GPM COEX Version Response\n");
540 mci->bt_ver_major =
541 *(p_data + MCI_GPM_COEX_B_MAJOR_VERSION);
542 mci->bt_ver_minor =
543 *(p_data + MCI_GPM_COEX_B_MINOR_VERSION);
544 mci->bt_version_known = true;
545 ath_dbg(common, MCI, "MCI BT Coex version: %d.%d\n",
546 mci->bt_ver_major, mci->bt_ver_minor);
547 break;
548 case MCI_GPM_COEX_STATUS_QUERY:
549 ath_dbg(common, MCI,
550 "MCI Recv GPM COEX Status Query = 0x%02X\n",
551 *(p_data + MCI_GPM_COEX_B_WLAN_BITMAP));
552 mci->wlan_channels_update = true;
553 ar9003_mci_send_coex_wlan_channels(ah, true);
554 break;
555 case MCI_GPM_COEX_BT_PROFILE_INFO:
556 mci->query_bt = true;
557 ath_dbg(common, MCI, "MCI Recv GPM COEX BT_Profile_Info\n");
558 break;
559 case MCI_GPM_COEX_BT_STATUS_UPDATE:
560 mci->query_bt = true;
561 ath_dbg(common, MCI,
562 "MCI Recv GPM COEX BT_Status_Update SEQ=%d (drop&query)\n",
563 *(p_gpm + 3));
564 break;
565 default:
566 break;
567 }
568 }
569
570 static u32 ar9003_mci_wait_for_gpm(struct ath_hw *ah, u8 gpm_type,
571 u8 gpm_opcode, int time_out)
572 {
573 struct ath_common *common = ath9k_hw_common(ah);
574 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
575 u32 *p_gpm = NULL, mismatch = 0, more_data;
576 u32 offset;
577 u8 recv_type = 0, recv_opcode = 0;
578 bool b_is_bt_cal_done = (gpm_type == MCI_GPM_BT_CAL_DONE);
579
580 more_data = time_out ? MCI_GPM_NOMORE : MCI_GPM_MORE;
581
582 while (time_out > 0) {
583 if (p_gpm) {
584 MCI_GPM_RECYCLE(p_gpm);
585 p_gpm = NULL;
586 }
587
588 if (more_data != MCI_GPM_MORE)
589 time_out = ar9003_mci_wait_for_interrupt(ah,
590 AR_MCI_INTERRUPT_RX_MSG_RAW,
591 AR_MCI_INTERRUPT_RX_MSG_GPM,
592 time_out);
593
594 if (!time_out)
595 break;
596
597 offset = ar9003_mci_get_next_gpm_offset(ah, &more_data);
598
599 if (offset == MCI_GPM_INVALID)
600 continue;
601
602 p_gpm = (u32 *) (mci->gpm_buf + offset);
603 recv_type = MCI_GPM_TYPE(p_gpm);
604 recv_opcode = MCI_GPM_OPCODE(p_gpm);
605
606 if (MCI_GPM_IS_CAL_TYPE(recv_type)) {
607 if (recv_type == gpm_type) {
608 if ((gpm_type == MCI_GPM_BT_CAL_DONE) &&
609 !b_is_bt_cal_done) {
610 gpm_type = MCI_GPM_BT_CAL_GRANT;
611 continue;
612 }
613 break;
614 }
615 } else if ((recv_type == gpm_type) &&
616 (recv_opcode == gpm_opcode))
617 break;
618
619 /*
620 * check if it's cal_grant
621 *
622 * When we're waiting for cal_grant in reset routine,
623 * it's possible that BT sends out cal_request at the
624 * same time. Since BT's calibration doesn't happen
625 * that often, we'll let BT completes calibration then
626 * we continue to wait for cal_grant from BT.
627 * Orginal: Wait BT_CAL_GRANT.
628 * New: Receive BT_CAL_REQ -> send WLAN_CAL_GRANT->wait
629 * BT_CAL_DONE -> Wait BT_CAL_GRANT.
630 */
631
632 if ((gpm_type == MCI_GPM_BT_CAL_GRANT) &&
633 (recv_type == MCI_GPM_BT_CAL_REQ)) {
634
635 u32 payload[4] = {0, 0, 0, 0};
636
637 gpm_type = MCI_GPM_BT_CAL_DONE;
638 MCI_GPM_SET_CAL_TYPE(payload,
639 MCI_GPM_WLAN_CAL_GRANT);
640 ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16,
641 false, false);
642 continue;
643 } else {
644 ath_dbg(common, MCI, "MCI GPM subtype not match 0x%x\n",
645 *(p_gpm + 1));
646 mismatch++;
647 ar9003_mci_process_gpm_extra(ah, recv_type,
648 recv_opcode, p_gpm);
649 }
650 }
651
652 if (p_gpm) {
653 MCI_GPM_RECYCLE(p_gpm);
654 p_gpm = NULL;
655 }
656
657 if (time_out <= 0)
658 time_out = 0;
659
660 while (more_data == MCI_GPM_MORE) {
661 offset = ar9003_mci_get_next_gpm_offset(ah, &more_data);
662 if (offset == MCI_GPM_INVALID)
663 break;
664
665 p_gpm = (u32 *) (mci->gpm_buf + offset);
666 recv_type = MCI_GPM_TYPE(p_gpm);
667 recv_opcode = MCI_GPM_OPCODE(p_gpm);
668
669 if (!MCI_GPM_IS_CAL_TYPE(recv_type))
670 ar9003_mci_process_gpm_extra(ah, recv_type,
671 recv_opcode, p_gpm);
672
673 MCI_GPM_RECYCLE(p_gpm);
674 }
675
676 return time_out;
677 }
678
679 bool ar9003_mci_start_reset(struct ath_hw *ah, struct ath9k_channel *chan)
680 {
681 struct ath_common *common = ath9k_hw_common(ah);
682 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
683 u32 payload[4] = {0, 0, 0, 0};
684
685 ar9003_mci_2g5g_changed(ah, IS_CHAN_2GHZ(chan));
686
687 if (mci_hw->bt_state != MCI_BT_CAL_START)
688 return false;
689
690 mci_hw->bt_state = MCI_BT_CAL;
691
692 /*
693 * MCI FIX: disable mci interrupt here. This is to avoid
694 * SW_MSG_DONE or RX_MSG bits to trigger MCI_INT and
695 * lead to mci_intr reentry.
696 */
697 ar9003_mci_disable_interrupt(ah);
698
699 MCI_GPM_SET_CAL_TYPE(payload, MCI_GPM_WLAN_CAL_GRANT);
700 ar9003_mci_send_message(ah, MCI_GPM, 0, payload,
701 16, true, false);
702
703 /* Wait BT calibration to be completed for 25ms */
704
705 if (ar9003_mci_wait_for_gpm(ah, MCI_GPM_BT_CAL_DONE,
706 0, 25000))
707 ath_dbg(common, MCI, "MCI BT_CAL_DONE received\n");
708 else
709 ath_dbg(common, MCI,
710 "MCI BT_CAL_DONE not received\n");
711
712 mci_hw->bt_state = MCI_BT_AWAKE;
713 /* MCI FIX: enable mci interrupt here */
714 ar9003_mci_enable_interrupt(ah);
715
716 return true;
717 }
718
719 int ar9003_mci_end_reset(struct ath_hw *ah, struct ath9k_channel *chan,
720 struct ath9k_hw_cal_data *caldata)
721 {
722 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
723
724 if (!mci_hw->ready)
725 return 0;
726
727 if (!IS_CHAN_2GHZ(chan) || (mci_hw->bt_state != MCI_BT_SLEEP))
728 goto exit;
729
730 if (!ar9003_mci_check_int(ah, AR_MCI_INTERRUPT_RX_MSG_REMOTE_RESET) &&
731 !ar9003_mci_check_int(ah, AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE))
732 goto exit;
733
734 /*
735 * BT is sleeping. Check if BT wakes up during
736 * WLAN calibration. If BT wakes up during
737 * WLAN calibration, need to go through all
738 * message exchanges again and recal.
739 */
740 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
741 (AR_MCI_INTERRUPT_RX_MSG_REMOTE_RESET |
742 AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE));
743
744 ar9003_mci_remote_reset(ah, true);
745 ar9003_mci_send_sys_waking(ah, true);
746 udelay(1);
747
748 if (IS_CHAN_2GHZ(chan))
749 ar9003_mci_send_lna_transfer(ah, true);
750
751 mci_hw->bt_state = MCI_BT_AWAKE;
752
753 REG_CLR_BIT(ah, AR_PHY_TIMING4,
754 1 << AR_PHY_TIMING_CONTROL4_DO_GAIN_DC_IQ_CAL_SHIFT);
755
756 if (caldata) {
757 clear_bit(TXIQCAL_DONE, &caldata->cal_flags);
758 clear_bit(TXCLCAL_DONE, &caldata->cal_flags);
759 clear_bit(RTT_DONE, &caldata->cal_flags);
760 }
761
762 if (!ath9k_hw_init_cal(ah, chan))
763 return -EIO;
764
765 REG_SET_BIT(ah, AR_PHY_TIMING4,
766 1 << AR_PHY_TIMING_CONTROL4_DO_GAIN_DC_IQ_CAL_SHIFT);
767
768 exit:
769 ar9003_mci_enable_interrupt(ah);
770 return 0;
771 }
772
773 static void ar9003_mci_mute_bt(struct ath_hw *ah)
774 {
775 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
776
777 /* disable all MCI messages */
778 REG_WRITE(ah, AR_MCI_MSG_ATTRIBUTES_TABLE, 0xffff0000);
779 REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS0, 0xffffffff);
780 REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS1, 0xffffffff);
781 REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS2, 0xffffffff);
782 REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS3, 0xffffffff);
783 REG_SET_BIT(ah, AR_MCI_TX_CTRL, AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
784
785 /* wait pending HW messages to flush out */
786 udelay(10);
787
788 /*
789 * Send LNA_TAKE and SYS_SLEEPING when
790 * 1. reset not after resuming from full sleep
791 * 2. before reset MCI RX, to quiet BT and avoid MCI RX misalignment
792 */
793 if (MCI_ANT_ARCH_PA_LNA_SHARED(mci)) {
794 ar9003_mci_send_lna_take(ah, true);
795 udelay(5);
796 }
797
798 ar9003_mci_send_sys_sleeping(ah, true);
799 }
800
801 static void ar9003_mci_osla_setup(struct ath_hw *ah, bool enable)
802 {
803 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
804 u32 thresh;
805
806 if (!enable) {
807 REG_CLR_BIT(ah, AR_BTCOEX_CTRL,
808 AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
809 return;
810 }
811 REG_RMW_FIELD(ah, AR_MCI_SCHD_TABLE_2, AR_MCI_SCHD_TABLE_2_HW_BASED, 1);
812 REG_RMW_FIELD(ah, AR_MCI_SCHD_TABLE_2,
813 AR_MCI_SCHD_TABLE_2_MEM_BASED, 1);
814
815 if (AR_SREV_9565(ah))
816 REG_RMW_FIELD(ah, AR_MCI_MISC, AR_MCI_MISC_HW_FIX_EN, 1);
817
818 if (!(mci->config & ATH_MCI_CONFIG_DISABLE_AGGR_THRESH)) {
819 thresh = MS(mci->config, ATH_MCI_CONFIG_AGGR_THRESH);
820 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
821 AR_BTCOEX_CTRL_AGGR_THRESH, thresh);
822 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
823 AR_BTCOEX_CTRL_TIME_TO_NEXT_BT_THRESH_EN, 1);
824 } else
825 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
826 AR_BTCOEX_CTRL_TIME_TO_NEXT_BT_THRESH_EN, 0);
827
828 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
829 AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN, 1);
830 }
831
832 static void ar9003_mci_stat_setup(struct ath_hw *ah)
833 {
834 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
835
836 if (!AR_SREV_9565(ah))
837 return;
838
839 if (mci->config & ATH_MCI_CONFIG_MCI_STAT_DBG) {
840 REG_RMW_FIELD(ah, AR_MCI_DBG_CNT_CTRL,
841 AR_MCI_DBG_CNT_CTRL_ENABLE, 1);
842 REG_RMW_FIELD(ah, AR_MCI_DBG_CNT_CTRL,
843 AR_MCI_DBG_CNT_CTRL_BT_LINKID,
844 MCI_STAT_ALL_BT_LINKID);
845 } else {
846 REG_RMW_FIELD(ah, AR_MCI_DBG_CNT_CTRL,
847 AR_MCI_DBG_CNT_CTRL_ENABLE, 0);
848 }
849 }
850
851 static void ar9003_mci_set_btcoex_ctrl_9565_1ANT(struct ath_hw *ah)
852 {
853 u32 regval;
854
855 regval = SM(1, AR_BTCOEX_CTRL_AR9462_MODE) |
856 SM(1, AR_BTCOEX_CTRL_WBTIMER_EN) |
857 SM(1, AR_BTCOEX_CTRL_PA_SHARED) |
858 SM(1, AR_BTCOEX_CTRL_LNA_SHARED) |
859 SM(1, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
860 SM(1, AR_BTCOEX_CTRL_RX_CHAIN_MASK) |
861 SM(0, AR_BTCOEX_CTRL_1_CHAIN_ACK) |
862 SM(0, AR_BTCOEX_CTRL_1_CHAIN_BCN) |
863 SM(0, AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
864
865 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2,
866 AR_BTCOEX_CTRL2_TX_CHAIN_MASK, 0x1);
867 REG_WRITE(ah, AR_BTCOEX_CTRL, regval);
868 }
869
870 static void ar9003_mci_set_btcoex_ctrl_9565_2ANT(struct ath_hw *ah)
871 {
872 u32 regval;
873
874 regval = SM(1, AR_BTCOEX_CTRL_AR9462_MODE) |
875 SM(1, AR_BTCOEX_CTRL_WBTIMER_EN) |
876 SM(0, AR_BTCOEX_CTRL_PA_SHARED) |
877 SM(0, AR_BTCOEX_CTRL_LNA_SHARED) |
878 SM(2, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
879 SM(1, AR_BTCOEX_CTRL_RX_CHAIN_MASK) |
880 SM(0, AR_BTCOEX_CTRL_1_CHAIN_ACK) |
881 SM(0, AR_BTCOEX_CTRL_1_CHAIN_BCN) |
882 SM(0, AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
883
884 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2,
885 AR_BTCOEX_CTRL2_TX_CHAIN_MASK, 0x0);
886 REG_WRITE(ah, AR_BTCOEX_CTRL, regval);
887 }
888
889 static void ar9003_mci_set_btcoex_ctrl_9462(struct ath_hw *ah)
890 {
891 u32 regval;
892
893 regval = SM(1, AR_BTCOEX_CTRL_AR9462_MODE) |
894 SM(1, AR_BTCOEX_CTRL_WBTIMER_EN) |
895 SM(1, AR_BTCOEX_CTRL_PA_SHARED) |
896 SM(1, AR_BTCOEX_CTRL_LNA_SHARED) |
897 SM(2, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
898 SM(3, AR_BTCOEX_CTRL_RX_CHAIN_MASK) |
899 SM(0, AR_BTCOEX_CTRL_1_CHAIN_ACK) |
900 SM(0, AR_BTCOEX_CTRL_1_CHAIN_BCN) |
901 SM(0, AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
902
903 REG_WRITE(ah, AR_BTCOEX_CTRL, regval);
904 }
905
906 int ar9003_mci_reset(struct ath_hw *ah, bool en_int, bool is_2g,
907 bool is_full_sleep)
908 {
909 struct ath_common *common = ath9k_hw_common(ah);
910 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
911 u32 regval, i;
912
913 ath_dbg(common, MCI, "MCI Reset (full_sleep = %d, is_2g = %d)\n",
914 is_full_sleep, is_2g);
915
916 if (REG_READ(ah, AR_BTCOEX_CTRL) == 0xdeadbeef) {
917 ath_err(common, "BTCOEX control register is dead\n");
918 return -EINVAL;
919 }
920
921 /* Program MCI DMA related registers */
922 REG_WRITE(ah, AR_MCI_GPM_0, mci->gpm_addr);
923 REG_WRITE(ah, AR_MCI_GPM_1, mci->gpm_len);
924 REG_WRITE(ah, AR_MCI_SCHD_TABLE_0, mci->sched_addr);
925
926 /*
927 * To avoid MCI state machine be affected by incoming remote MCI msgs,
928 * MCI mode will be enabled later, right before reset the MCI TX and RX.
929 */
930 if (AR_SREV_9565(ah)) {
931 u8 ant = MS(mci->config, ATH_MCI_CONFIG_ANT_ARCH);
932
933 if (ant == ATH_MCI_ANT_ARCH_1_ANT_PA_LNA_SHARED)
934 ar9003_mci_set_btcoex_ctrl_9565_1ANT(ah);
935 else
936 ar9003_mci_set_btcoex_ctrl_9565_2ANT(ah);
937 } else {
938 ar9003_mci_set_btcoex_ctrl_9462(ah);
939 }
940
941 if (is_2g && !(mci->config & ATH_MCI_CONFIG_DISABLE_OSLA))
942 ar9003_mci_osla_setup(ah, true);
943 else
944 ar9003_mci_osla_setup(ah, false);
945
946 REG_SET_BIT(ah, AR_PHY_GLB_CONTROL,
947 AR_BTCOEX_CTRL_SPDT_ENABLE);
948 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL3,
949 AR_BTCOEX_CTRL3_CONT_INFO_TIMEOUT, 20);
950
951 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, AR_BTCOEX_CTRL2_RX_DEWEIGHT, 0);
952 REG_RMW_FIELD(ah, AR_PCU_MISC, AR_PCU_BT_ANT_PREVENT_RX, 0);
953
954 /* Set the time out to 3.125ms (5 BT slots) */
955 REG_RMW_FIELD(ah, AR_BTCOEX_WL_LNA, AR_BTCOEX_WL_LNA_TIMEOUT, 0x3D090);
956
957 /* concurrent tx priority */
958 if (mci->config & ATH_MCI_CONFIG_CONCUR_TX) {
959 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2,
960 AR_BTCOEX_CTRL2_DESC_BASED_TXPWR_ENABLE, 0);
961 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2,
962 AR_BTCOEX_CTRL2_TXPWR_THRESH, 0x7f);
963 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
964 AR_BTCOEX_CTRL_REDUCE_TXPWR, 0);
965 for (i = 0; i < 8; i++)
966 REG_WRITE(ah, AR_BTCOEX_MAX_TXPWR(i), 0x7f7f7f7f);
967 }
968
969 regval = MS(mci->config, ATH_MCI_CONFIG_CLK_DIV);
970 REG_RMW_FIELD(ah, AR_MCI_TX_CTRL, AR_MCI_TX_CTRL_CLK_DIV, regval);
971 REG_SET_BIT(ah, AR_BTCOEX_CTRL, AR_BTCOEX_CTRL_MCI_MODE_EN);
972
973 /* Resetting the Rx and Tx paths of MCI */
974 regval = REG_READ(ah, AR_MCI_COMMAND2);
975 regval |= SM(1, AR_MCI_COMMAND2_RESET_TX);
976 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
977
978 udelay(1);
979
980 regval &= ~SM(1, AR_MCI_COMMAND2_RESET_TX);
981 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
982
983 if (is_full_sleep) {
984 ar9003_mci_mute_bt(ah);
985 udelay(100);
986 }
987
988 /* Check pending GPM msg before MCI Reset Rx */
989 ar9003_mci_check_gpm_offset(ah);
990
991 regval |= SM(1, AR_MCI_COMMAND2_RESET_RX);
992 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
993 udelay(1);
994 regval &= ~SM(1, AR_MCI_COMMAND2_RESET_RX);
995 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
996
997 /* Init GPM offset after MCI Reset Rx */
998 ar9003_mci_state(ah, MCI_STATE_INIT_GPM_OFFSET);
999
1000 REG_WRITE(ah, AR_MCI_MSG_ATTRIBUTES_TABLE,
1001 (SM(0xe801, AR_MCI_MSG_ATTRIBUTES_TABLE_INVALID_HDR) |
1002 SM(0x0000, AR_MCI_MSG_ATTRIBUTES_TABLE_CHECKSUM)));
1003
1004 if (MCI_ANT_ARCH_PA_LNA_SHARED(mci))
1005 REG_CLR_BIT(ah, AR_MCI_TX_CTRL,
1006 AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
1007 else
1008 REG_SET_BIT(ah, AR_MCI_TX_CTRL,
1009 AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
1010
1011 ar9003_mci_observation_set_up(ah);
1012
1013 mci->ready = true;
1014 ar9003_mci_prep_interface(ah);
1015 ar9003_mci_stat_setup(ah);
1016
1017 if (en_int)
1018 ar9003_mci_enable_interrupt(ah);
1019
1020 if (ath9k_hw_is_aic_enabled(ah))
1021 ar9003_aic_start_normal(ah);
1022
1023 return 0;
1024 }
1025
1026 void ar9003_mci_stop_bt(struct ath_hw *ah, bool save_fullsleep)
1027 {
1028 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
1029
1030 ar9003_mci_disable_interrupt(ah);
1031
1032 if (mci_hw->ready && !save_fullsleep) {
1033 ar9003_mci_mute_bt(ah);
1034 udelay(20);
1035 REG_WRITE(ah, AR_BTCOEX_CTRL, 0);
1036 }
1037
1038 mci_hw->bt_state = MCI_BT_SLEEP;
1039 mci_hw->ready = false;
1040 }
1041
1042 static void ar9003_mci_send_2g5g_status(struct ath_hw *ah, bool wait_done)
1043 {
1044 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1045 u32 new_flags, to_set, to_clear;
1046
1047 if (!mci->update_2g5g || (mci->bt_state == MCI_BT_SLEEP))
1048 return;
1049
1050 if (mci->is_2g) {
1051 new_flags = MCI_2G_FLAGS;
1052 to_clear = MCI_2G_FLAGS_CLEAR_MASK;
1053 to_set = MCI_2G_FLAGS_SET_MASK;
1054 } else {
1055 new_flags = MCI_5G_FLAGS;
1056 to_clear = MCI_5G_FLAGS_CLEAR_MASK;
1057 to_set = MCI_5G_FLAGS_SET_MASK;
1058 }
1059
1060 if (to_clear)
1061 ar9003_mci_send_coex_bt_flags(ah, wait_done,
1062 MCI_GPM_COEX_BT_FLAGS_CLEAR,
1063 to_clear);
1064 if (to_set)
1065 ar9003_mci_send_coex_bt_flags(ah, wait_done,
1066 MCI_GPM_COEX_BT_FLAGS_SET,
1067 to_set);
1068 }
1069
1070 static void ar9003_mci_queue_unsent_gpm(struct ath_hw *ah, u8 header,
1071 u32 *payload, bool queue)
1072 {
1073 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1074 u8 type, opcode;
1075
1076 /* check if the message is to be queued */
1077 if (header != MCI_GPM)
1078 return;
1079
1080 type = MCI_GPM_TYPE(payload);
1081 opcode = MCI_GPM_OPCODE(payload);
1082
1083 if (type != MCI_GPM_COEX_AGENT)
1084 return;
1085
1086 switch (opcode) {
1087 case MCI_GPM_COEX_BT_UPDATE_FLAGS:
1088 if (*(((u8 *)payload) + MCI_GPM_COEX_B_BT_FLAGS_OP) ==
1089 MCI_GPM_COEX_BT_FLAGS_READ)
1090 break;
1091
1092 mci->update_2g5g = queue;
1093
1094 break;
1095 case MCI_GPM_COEX_WLAN_CHANNELS:
1096 mci->wlan_channels_update = queue;
1097 break;
1098 case MCI_GPM_COEX_HALT_BT_GPM:
1099 if (*(((u8 *)payload) + MCI_GPM_COEX_B_HALT_STATE) ==
1100 MCI_GPM_COEX_BT_GPM_UNHALT) {
1101 mci->unhalt_bt_gpm = queue;
1102
1103 if (!queue)
1104 mci->halted_bt_gpm = false;
1105 }
1106
1107 if (*(((u8 *)payload) + MCI_GPM_COEX_B_HALT_STATE) ==
1108 MCI_GPM_COEX_BT_GPM_HALT) {
1109
1110 mci->halted_bt_gpm = !queue;
1111 }
1112
1113 break;
1114 default:
1115 break;
1116 }
1117 }
1118
1119 void ar9003_mci_2g5g_switch(struct ath_hw *ah, bool force)
1120 {
1121 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1122
1123 if (!mci->update_2g5g && !force)
1124 return;
1125
1126 if (mci->is_2g) {
1127 ar9003_mci_send_2g5g_status(ah, true);
1128 ar9003_mci_send_lna_transfer(ah, true);
1129 udelay(5);
1130
1131 REG_CLR_BIT(ah, AR_MCI_TX_CTRL,
1132 AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
1133 REG_CLR_BIT(ah, AR_PHY_GLB_CONTROL,
1134 AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
1135
1136 if (!(mci->config & ATH_MCI_CONFIG_DISABLE_OSLA))
1137 ar9003_mci_osla_setup(ah, true);
1138
1139 if (AR_SREV_9462(ah))
1140 REG_WRITE(ah, AR_SELFGEN_MASK, 0x02);
1141 } else {
1142 ar9003_mci_send_lna_take(ah, true);
1143 udelay(5);
1144
1145 REG_SET_BIT(ah, AR_MCI_TX_CTRL,
1146 AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
1147 REG_SET_BIT(ah, AR_PHY_GLB_CONTROL,
1148 AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
1149
1150 ar9003_mci_osla_setup(ah, false);
1151 ar9003_mci_send_2g5g_status(ah, true);
1152 }
1153 }
1154
1155 bool ar9003_mci_send_message(struct ath_hw *ah, u8 header, u32 flag,
1156 u32 *payload, u8 len, bool wait_done,
1157 bool check_bt)
1158 {
1159 struct ath_common *common = ath9k_hw_common(ah);
1160 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1161 bool msg_sent = false;
1162 u32 regval;
1163 u32 saved_mci_int_en;
1164 int i;
1165
1166 saved_mci_int_en = REG_READ(ah, AR_MCI_INTERRUPT_EN);
1167 regval = REG_READ(ah, AR_BTCOEX_CTRL);
1168
1169 if ((regval == 0xdeadbeef) || !(regval & AR_BTCOEX_CTRL_MCI_MODE_EN)) {
1170 ath_dbg(common, MCI,
1171 "MCI Not sending 0x%x. MCI is not enabled. full_sleep = %d\n",
1172 header, (ah->power_mode == ATH9K_PM_FULL_SLEEP) ? 1 : 0);
1173 ar9003_mci_queue_unsent_gpm(ah, header, payload, true);
1174 return false;
1175 } else if (check_bt && (mci->bt_state == MCI_BT_SLEEP)) {
1176 ath_dbg(common, MCI,
1177 "MCI Don't send message 0x%x. BT is in sleep state\n",
1178 header);
1179 ar9003_mci_queue_unsent_gpm(ah, header, payload, true);
1180 return false;
1181 }
1182
1183 if (wait_done)
1184 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, 0);
1185
1186 /* Need to clear SW_MSG_DONE raw bit before wait */
1187
1188 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
1189 (AR_MCI_INTERRUPT_SW_MSG_DONE |
1190 AR_MCI_INTERRUPT_MSG_FAIL_MASK));
1191
1192 if (payload) {
1193 for (i = 0; (i * 4) < len; i++)
1194 REG_WRITE(ah, (AR_MCI_TX_PAYLOAD0 + i * 4),
1195 *(payload + i));
1196 }
1197
1198 REG_WRITE(ah, AR_MCI_COMMAND0,
1199 (SM((flag & MCI_FLAG_DISABLE_TIMESTAMP),
1200 AR_MCI_COMMAND0_DISABLE_TIMESTAMP) |
1201 SM(len, AR_MCI_COMMAND0_LEN) |
1202 SM(header, AR_MCI_COMMAND0_HEADER)));
1203
1204 if (wait_done &&
1205 !(ar9003_mci_wait_for_interrupt(ah, AR_MCI_INTERRUPT_RAW,
1206 AR_MCI_INTERRUPT_SW_MSG_DONE, 500)))
1207 ar9003_mci_queue_unsent_gpm(ah, header, payload, true);
1208 else {
1209 ar9003_mci_queue_unsent_gpm(ah, header, payload, false);
1210 msg_sent = true;
1211 }
1212
1213 if (wait_done)
1214 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, saved_mci_int_en);
1215
1216 return msg_sent;
1217 }
1218 EXPORT_SYMBOL(ar9003_mci_send_message);
1219
1220 void ar9003_mci_init_cal_req(struct ath_hw *ah, bool *is_reusable)
1221 {
1222 struct ath_common *common = ath9k_hw_common(ah);
1223 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
1224 u32 pld[4] = {0, 0, 0, 0};
1225
1226 if ((mci_hw->bt_state != MCI_BT_AWAKE) ||
1227 (mci_hw->config & ATH_MCI_CONFIG_DISABLE_MCI_CAL))
1228 return;
1229
1230 MCI_GPM_SET_CAL_TYPE(pld, MCI_GPM_WLAN_CAL_REQ);
1231 pld[MCI_GPM_WLAN_CAL_W_SEQUENCE] = mci_hw->wlan_cal_seq++;
1232
1233 ar9003_mci_send_message(ah, MCI_GPM, 0, pld, 16, true, false);
1234
1235 if (ar9003_mci_wait_for_gpm(ah, MCI_GPM_BT_CAL_GRANT, 0, 50000)) {
1236 ath_dbg(common, MCI, "MCI BT_CAL_GRANT received\n");
1237 } else {
1238 *is_reusable = false;
1239 ath_dbg(common, MCI, "MCI BT_CAL_GRANT not received\n");
1240 }
1241 }
1242
1243 void ar9003_mci_init_cal_done(struct ath_hw *ah)
1244 {
1245 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
1246 u32 pld[4] = {0, 0, 0, 0};
1247
1248 if ((mci_hw->bt_state != MCI_BT_AWAKE) ||
1249 (mci_hw->config & ATH_MCI_CONFIG_DISABLE_MCI_CAL))
1250 return;
1251
1252 MCI_GPM_SET_CAL_TYPE(pld, MCI_GPM_WLAN_CAL_DONE);
1253 pld[MCI_GPM_WLAN_CAL_W_SEQUENCE] = mci_hw->wlan_cal_done++;
1254 ar9003_mci_send_message(ah, MCI_GPM, 0, pld, 16, true, false);
1255 }
1256
1257 int ar9003_mci_setup(struct ath_hw *ah, u32 gpm_addr, void *gpm_buf,
1258 u16 len, u32 sched_addr)
1259 {
1260 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1261
1262 mci->gpm_addr = gpm_addr;
1263 mci->gpm_buf = gpm_buf;
1264 mci->gpm_len = len;
1265 mci->sched_addr = sched_addr;
1266
1267 return ar9003_mci_reset(ah, true, true, true);
1268 }
1269 EXPORT_SYMBOL(ar9003_mci_setup);
1270
1271 void ar9003_mci_cleanup(struct ath_hw *ah)
1272 {
1273 /* Turn off MCI and Jupiter mode. */
1274 REG_WRITE(ah, AR_BTCOEX_CTRL, 0x00);
1275 ar9003_mci_disable_interrupt(ah);
1276 }
1277 EXPORT_SYMBOL(ar9003_mci_cleanup);
1278
1279 u32 ar9003_mci_state(struct ath_hw *ah, u32 state_type)
1280 {
1281 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1282 u32 value = 0, tsf;
1283 u8 query_type;
1284
1285 switch (state_type) {
1286 case MCI_STATE_ENABLE:
1287 if (mci->ready) {
1288 value = REG_READ(ah, AR_BTCOEX_CTRL);
1289
1290 if ((value == 0xdeadbeef) || (value == 0xffffffff))
1291 value = 0;
1292 }
1293 value &= AR_BTCOEX_CTRL_MCI_MODE_EN;
1294 break;
1295 case MCI_STATE_INIT_GPM_OFFSET:
1296 value = MS(REG_READ(ah, AR_MCI_GPM_1), AR_MCI_GPM_WRITE_PTR);
1297
1298 if (value < mci->gpm_len)
1299 mci->gpm_idx = value;
1300 else
1301 mci->gpm_idx = 0;
1302 break;
1303 case MCI_STATE_LAST_SCHD_MSG_OFFSET:
1304 value = MS(REG_READ(ah, AR_MCI_RX_STATUS),
1305 AR_MCI_RX_LAST_SCHD_MSG_INDEX);
1306 /* Make it in bytes */
1307 value <<= 4;
1308 break;
1309 case MCI_STATE_REMOTE_SLEEP:
1310 value = MS(REG_READ(ah, AR_MCI_RX_STATUS),
1311 AR_MCI_RX_REMOTE_SLEEP) ?
1312 MCI_BT_SLEEP : MCI_BT_AWAKE;
1313 break;
1314 case MCI_STATE_SET_BT_AWAKE:
1315 mci->bt_state = MCI_BT_AWAKE;
1316 ar9003_mci_send_coex_version_query(ah, true);
1317 ar9003_mci_send_coex_wlan_channels(ah, true);
1318
1319 if (mci->unhalt_bt_gpm)
1320 ar9003_mci_send_coex_halt_bt_gpm(ah, false, true);
1321
1322 ar9003_mci_2g5g_switch(ah, false);
1323 break;
1324 case MCI_STATE_RESET_REQ_WAKE:
1325 ar9003_mci_reset_req_wakeup(ah);
1326 mci->update_2g5g = true;
1327
1328 if (mci->config & ATH_MCI_CONFIG_MCI_OBS_MASK) {
1329 /* Check if we still have control of the GPIOs */
1330 if ((REG_READ(ah, AR_GLB_GPIO_CONTROL) &
1331 ATH_MCI_CONFIG_MCI_OBS_GPIO) !=
1332 ATH_MCI_CONFIG_MCI_OBS_GPIO) {
1333 ar9003_mci_observation_set_up(ah);
1334 }
1335 }
1336 break;
1337 case MCI_STATE_SEND_WLAN_COEX_VERSION:
1338 ar9003_mci_send_coex_version_response(ah, true);
1339 break;
1340 case MCI_STATE_SEND_VERSION_QUERY:
1341 ar9003_mci_send_coex_version_query(ah, true);
1342 break;
1343 case MCI_STATE_SEND_STATUS_QUERY:
1344 query_type = MCI_GPM_COEX_QUERY_BT_TOPOLOGY;
1345 ar9003_mci_send_coex_bt_status_query(ah, true, query_type);
1346 break;
1347 case MCI_STATE_RECOVER_RX:
1348 tsf = ath9k_hw_gettsf32(ah);
1349 if ((tsf - mci->last_recovery) <= MCI_RECOVERY_DUR_TSF) {
1350 ath_dbg(ath9k_hw_common(ah), MCI,
1351 "(MCI) ignore Rx recovery\n");
1352 break;
1353 }
1354 ath_dbg(ath9k_hw_common(ah), MCI, "(MCI) RECOVER RX\n");
1355 mci->last_recovery = tsf;
1356 ar9003_mci_prep_interface(ah);
1357 mci->query_bt = true;
1358 mci->need_flush_btinfo = true;
1359 ar9003_mci_send_coex_wlan_channels(ah, true);
1360 ar9003_mci_2g5g_switch(ah, false);
1361 break;
1362 case MCI_STATE_NEED_FTP_STOMP:
1363 value = !(mci->config & ATH_MCI_CONFIG_DISABLE_FTP_STOMP);
1364 break;
1365 case MCI_STATE_NEED_FLUSH_BT_INFO:
1366 value = (!mci->unhalt_bt_gpm && mci->need_flush_btinfo) ? 1 : 0;
1367 mci->need_flush_btinfo = false;
1368 break;
1369 case MCI_STATE_AIC_CAL:
1370 if (ath9k_hw_is_aic_enabled(ah))
1371 value = ar9003_aic_calibration(ah);
1372 break;
1373 case MCI_STATE_AIC_START:
1374 if (ath9k_hw_is_aic_enabled(ah))
1375 ar9003_aic_start_normal(ah);
1376 break;
1377 case MCI_STATE_AIC_CAL_RESET:
1378 if (ath9k_hw_is_aic_enabled(ah))
1379 value = ar9003_aic_cal_reset(ah);
1380 break;
1381 case MCI_STATE_AIC_CAL_SINGLE:
1382 if (ath9k_hw_is_aic_enabled(ah))
1383 value = ar9003_aic_calibration_single(ah);
1384 break;
1385 default:
1386 break;
1387 }
1388
1389 return value;
1390 }
1391 EXPORT_SYMBOL(ar9003_mci_state);
1392
1393 void ar9003_mci_bt_gain_ctrl(struct ath_hw *ah)
1394 {
1395 struct ath_common *common = ath9k_hw_common(ah);
1396 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1397
1398 ath_dbg(common, MCI, "Give LNA and SPDT control to BT\n");
1399
1400 ar9003_mci_send_lna_take(ah, true);
1401 udelay(50);
1402
1403 REG_SET_BIT(ah, AR_PHY_GLB_CONTROL, AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
1404 mci->is_2g = false;
1405 mci->update_2g5g = true;
1406 ar9003_mci_send_2g5g_status(ah, true);
1407
1408 /* Force another 2g5g update at next scanning */
1409 mci->update_2g5g = true;
1410 }
1411
1412 void ar9003_mci_set_power_awake(struct ath_hw *ah)
1413 {
1414 u32 btcoex_ctrl2, diag_sw;
1415 int i;
1416 u8 lna_ctrl, bt_sleep;
1417
1418 for (i = 0; i < AH_WAIT_TIMEOUT; i++) {
1419 btcoex_ctrl2 = REG_READ(ah, AR_BTCOEX_CTRL2);
1420 if (btcoex_ctrl2 != 0xdeadbeef)
1421 break;
1422 udelay(AH_TIME_QUANTUM);
1423 }
1424 REG_WRITE(ah, AR_BTCOEX_CTRL2, (btcoex_ctrl2 | BIT(23)));
1425
1426 for (i = 0; i < AH_WAIT_TIMEOUT; i++) {
1427 diag_sw = REG_READ(ah, AR_DIAG_SW);
1428 if (diag_sw != 0xdeadbeef)
1429 break;
1430 udelay(AH_TIME_QUANTUM);
1431 }
1432 REG_WRITE(ah, AR_DIAG_SW, (diag_sw | BIT(27) | BIT(19) | BIT(18)));
1433 lna_ctrl = REG_READ(ah, AR_OBS_BUS_CTRL) & 0x3;
1434 bt_sleep = MS(REG_READ(ah, AR_MCI_RX_STATUS), AR_MCI_RX_REMOTE_SLEEP);
1435
1436 REG_WRITE(ah, AR_BTCOEX_CTRL2, btcoex_ctrl2);
1437 REG_WRITE(ah, AR_DIAG_SW, diag_sw);
1438
1439 if (bt_sleep && (lna_ctrl == 2)) {
1440 REG_SET_BIT(ah, AR_BTCOEX_RC, 0x1);
1441 REG_CLR_BIT(ah, AR_BTCOEX_RC, 0x1);
1442 udelay(50);
1443 }
1444 }
1445
1446 void ar9003_mci_check_gpm_offset(struct ath_hw *ah)
1447 {
1448 struct ath_common *common = ath9k_hw_common(ah);
1449 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1450 u32 offset;
1451
1452 /*
1453 * This should only be called before "MAC Warm Reset" or "MCI Reset Rx".
1454 */
1455 offset = MS(REG_READ(ah, AR_MCI_GPM_1), AR_MCI_GPM_WRITE_PTR);
1456 if (mci->gpm_idx == offset)
1457 return;
1458 ath_dbg(common, MCI, "GPM cached write pointer mismatch %d %d\n",
1459 mci->gpm_idx, offset);
1460 mci->query_bt = true;
1461 mci->need_flush_btinfo = true;
1462 mci->gpm_idx = 0;
1463 }
1464
1465 u32 ar9003_mci_get_next_gpm_offset(struct ath_hw *ah, u32 *more)
1466 {
1467 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1468 u32 offset, more_gpm = 0, gpm_ptr;
1469
1470 /*
1471 * This could be useful to avoid new GPM message interrupt which
1472 * may lead to spurious interrupt after power sleep, or multiple
1473 * entry of ath_mci_intr().
1474 * Adding empty GPM check by returning HAL_MCI_GPM_INVALID can
1475 * alleviate this effect, but clearing GPM RX interrupt bit is
1476 * safe, because whether this is called from hw or driver code
1477 * there must be an interrupt bit set/triggered initially
1478 */
1479 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
1480 AR_MCI_INTERRUPT_RX_MSG_GPM);
1481
1482 gpm_ptr = MS(REG_READ(ah, AR_MCI_GPM_1), AR_MCI_GPM_WRITE_PTR);
1483 offset = gpm_ptr;
1484
1485 if (!offset)
1486 offset = mci->gpm_len - 1;
1487 else if (offset >= mci->gpm_len) {
1488 if (offset != 0xFFFF)
1489 offset = 0;
1490 } else {
1491 offset--;
1492 }
1493
1494 if ((offset == 0xFFFF) || (gpm_ptr == mci->gpm_idx)) {
1495 offset = MCI_GPM_INVALID;
1496 more_gpm = MCI_GPM_NOMORE;
1497 goto out;
1498 }
1499 for (;;) {
1500 u32 temp_index;
1501
1502 /* skip reserved GPM if any */
1503
1504 if (offset != mci->gpm_idx)
1505 more_gpm = MCI_GPM_MORE;
1506 else
1507 more_gpm = MCI_GPM_NOMORE;
1508
1509 temp_index = mci->gpm_idx;
1510
1511 if (temp_index >= mci->gpm_len)
1512 temp_index = 0;
1513
1514 mci->gpm_idx++;
1515
1516 if (mci->gpm_idx >= mci->gpm_len)
1517 mci->gpm_idx = 0;
1518
1519 if (ar9003_mci_is_gpm_valid(ah, temp_index)) {
1520 offset = temp_index;
1521 break;
1522 }
1523
1524 if (more_gpm == MCI_GPM_NOMORE) {
1525 offset = MCI_GPM_INVALID;
1526 break;
1527 }
1528 }
1529
1530 if (offset != MCI_GPM_INVALID)
1531 offset <<= 4;
1532 out:
1533 if (more)
1534 *more = more_gpm;
1535
1536 return offset;
1537 }
1538 EXPORT_SYMBOL(ar9003_mci_get_next_gpm_offset);
1539
1540 void ar9003_mci_set_bt_version(struct ath_hw *ah, u8 major, u8 minor)
1541 {
1542 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1543
1544 mci->bt_ver_major = major;
1545 mci->bt_ver_minor = minor;
1546 mci->bt_version_known = true;
1547 ath_dbg(ath9k_hw_common(ah), MCI, "MCI BT version set: %d.%d\n",
1548 mci->bt_ver_major, mci->bt_ver_minor);
1549 }
1550 EXPORT_SYMBOL(ar9003_mci_set_bt_version);
1551
1552 void ar9003_mci_send_wlan_channels(struct ath_hw *ah)
1553 {
1554 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1555
1556 mci->wlan_channels_update = true;
1557 ar9003_mci_send_coex_wlan_channels(ah, true);
1558 }
1559 EXPORT_SYMBOL(ar9003_mci_send_wlan_channels);
1560
1561 u16 ar9003_mci_get_max_txpower(struct ath_hw *ah, u8 ctlmode)
1562 {
1563 if (!ah->btcoex_hw.mci.concur_tx)
1564 goto out;
1565
1566 if (ctlmode == CTL_2GHT20)
1567 return ATH_BTCOEX_HT20_MAX_TXPOWER;
1568 else if (ctlmode == CTL_2GHT40)
1569 return ATH_BTCOEX_HT40_MAX_TXPOWER;
1570
1571 out:
1572 return -1;
1573 }
Linux with added FPC-III support