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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
24static 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
33static 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
79static 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
88static 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
96static 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
103static 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
109static 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
117static 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
124static 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
139static 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
154static 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
170static 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
201static 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
224static 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
305clear_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
321void 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
334static 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
340static 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
347static 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
355void 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}
367EXPORT_SYMBOL(ar9003_mci_get_interrupt);
368
369void 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
394static 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
405static 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
425static 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_gpio_request_out(ah, 3, NULL,
431 AR_GPIO_OUTPUT_MUX_AS_MCI_WLAN_DATA);
432 ath9k_hw_gpio_request_out(ah, 2, NULL,
433 AR_GPIO_OUTPUT_MUX_AS_MCI_WLAN_CLK);
434 ath9k_hw_gpio_request_out(ah, 1, NULL,
435 AR_GPIO_OUTPUT_MUX_AS_MCI_BT_DATA);
436 ath9k_hw_gpio_request_out(ah, 0, NULL,
437 AR_GPIO_OUTPUT_MUX_AS_MCI_BT_CLK);
438 } else if (mci->config & ATH_MCI_CONFIG_MCI_OBS_TXRX) {
439 ath9k_hw_gpio_request_out(ah, 3, NULL,
440 AR_GPIO_OUTPUT_MUX_AS_WL_IN_TX);
441 ath9k_hw_gpio_request_out(ah, 2, NULL,
442 AR_GPIO_OUTPUT_MUX_AS_WL_IN_RX);
443 ath9k_hw_gpio_request_out(ah, 1, NULL,
444 AR_GPIO_OUTPUT_MUX_AS_BT_IN_TX);
445 ath9k_hw_gpio_request_out(ah, 0, NULL,
446 AR_GPIO_OUTPUT_MUX_AS_BT_IN_RX);
447 ath9k_hw_gpio_request_out(ah, 5, NULL,
448 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
449 } else if (mci->config & ATH_MCI_CONFIG_MCI_OBS_BT) {
450 ath9k_hw_gpio_request_out(ah, 3, NULL,
451 AR_GPIO_OUTPUT_MUX_AS_BT_IN_TX);
452 ath9k_hw_gpio_request_out(ah, 2, NULL,
453 AR_GPIO_OUTPUT_MUX_AS_BT_IN_RX);
454 ath9k_hw_gpio_request_out(ah, 1, NULL,
455 AR_GPIO_OUTPUT_MUX_AS_MCI_BT_DATA);
456 ath9k_hw_gpio_request_out(ah, 0, NULL,
457 AR_GPIO_OUTPUT_MUX_AS_MCI_BT_CLK);
458 } else
459 return;
460
461 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
462
463 REG_RMW_FIELD(ah, AR_PHY_GLB_CONTROL, AR_GLB_DS_JTAG_DISABLE, 1);
464 REG_RMW_FIELD(ah, AR_PHY_GLB_CONTROL, AR_GLB_WLAN_UART_INTF_EN, 0);
465 REG_SET_BIT(ah, AR_GLB_GPIO_CONTROL, ATH_MCI_CONFIG_MCI_OBS_GPIO);
466
467 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, AR_BTCOEX_CTRL2_GPIO_OBS_SEL, 0);
468 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, AR_BTCOEX_CTRL2_MAC_BB_OBS_SEL, 1);
469 REG_WRITE(ah, AR_OBS, 0x4b);
470 REG_RMW_FIELD(ah, AR_DIAG_SW, AR_DIAG_OBS_PT_SEL1, 0x03);
471 REG_RMW_FIELD(ah, AR_DIAG_SW, AR_DIAG_OBS_PT_SEL2, 0x01);
472 REG_RMW_FIELD(ah, AR_MACMISC, AR_MACMISC_MISC_OBS_BUS_LSB, 0x02);
473 REG_RMW_FIELD(ah, AR_MACMISC, AR_MACMISC_MISC_OBS_BUS_MSB, 0x03);
474 REG_RMW_FIELD(ah, AR_PHY_TEST_CTL_STATUS,
475 AR_PHY_TEST_CTL_DEBUGPORT_SEL, 0x07);
476}
477
478static bool ar9003_mci_send_coex_bt_flags(struct ath_hw *ah, bool wait_done,
479 u8 opcode, u32 bt_flags)
480{
481 u32 pld[4] = {0, 0, 0, 0};
482
483 MCI_GPM_SET_TYPE_OPCODE(pld, MCI_GPM_COEX_AGENT,
484 MCI_GPM_COEX_BT_UPDATE_FLAGS);
485
486 *(((u8 *)pld) + MCI_GPM_COEX_B_BT_FLAGS_OP) = opcode;
487 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 0) = bt_flags & 0xFF;
488 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 1) = (bt_flags >> 8) & 0xFF;
489 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 2) = (bt_flags >> 16) & 0xFF;
490 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 3) = (bt_flags >> 24) & 0xFF;
491
492 return ar9003_mci_send_message(ah, MCI_GPM, 0, pld, 16,
493 wait_done, true);
494}
495
496static void ar9003_mci_sync_bt_state(struct ath_hw *ah)
497{
498 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
499 u32 cur_bt_state;
500
501 cur_bt_state = ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP);
502
503 if (mci->bt_state != cur_bt_state)
504 mci->bt_state = cur_bt_state;
505
506 if (mci->bt_state != MCI_BT_SLEEP) {
507
508 ar9003_mci_send_coex_version_query(ah, true);
509 ar9003_mci_send_coex_wlan_channels(ah, true);
510
511 if (mci->unhalt_bt_gpm == true)
512 ar9003_mci_send_coex_halt_bt_gpm(ah, false, true);
513 }
514}
515
516void ar9003_mci_check_bt(struct ath_hw *ah)
517{
518 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
519
520 if (!mci_hw->ready)
521 return;
522
523 /*
524 * check BT state again to make
525 * sure it's not changed.
526 */
527 ar9003_mci_sync_bt_state(ah);
528 ar9003_mci_2g5g_switch(ah, true);
529
530 if ((mci_hw->bt_state == MCI_BT_AWAKE) &&
531 (mci_hw->query_bt == true)) {
532 mci_hw->need_flush_btinfo = true;
533 }
534}
535
536static void ar9003_mci_process_gpm_extra(struct ath_hw *ah, u8 gpm_type,
537 u8 gpm_opcode, u32 *p_gpm)
538{
539 struct ath_common *common = ath9k_hw_common(ah);
540 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
541 u8 *p_data = (u8 *) p_gpm;
542
543 if (gpm_type != MCI_GPM_COEX_AGENT)
544 return;
545
546 switch (gpm_opcode) {
547 case MCI_GPM_COEX_VERSION_QUERY:
548 ath_dbg(common, MCI, "MCI Recv GPM COEX Version Query\n");
549 ar9003_mci_send_coex_version_response(ah, true);
550 break;
551 case MCI_GPM_COEX_VERSION_RESPONSE:
552 ath_dbg(common, MCI, "MCI Recv GPM COEX Version Response\n");
553 mci->bt_ver_major =
554 *(p_data + MCI_GPM_COEX_B_MAJOR_VERSION);
555 mci->bt_ver_minor =
556 *(p_data + MCI_GPM_COEX_B_MINOR_VERSION);
557 mci->bt_version_known = true;
558 ath_dbg(common, MCI, "MCI BT Coex version: %d.%d\n",
559 mci->bt_ver_major, mci->bt_ver_minor);
560 break;
561 case MCI_GPM_COEX_STATUS_QUERY:
562 ath_dbg(common, MCI,
563 "MCI Recv GPM COEX Status Query = 0x%02X\n",
564 *(p_data + MCI_GPM_COEX_B_WLAN_BITMAP));
565 mci->wlan_channels_update = true;
566 ar9003_mci_send_coex_wlan_channels(ah, true);
567 break;
568 case MCI_GPM_COEX_BT_PROFILE_INFO:
569 mci->query_bt = true;
570 ath_dbg(common, MCI, "MCI Recv GPM COEX BT_Profile_Info\n");
571 break;
572 case MCI_GPM_COEX_BT_STATUS_UPDATE:
573 mci->query_bt = true;
574 ath_dbg(common, MCI,
575 "MCI Recv GPM COEX BT_Status_Update SEQ=%d (drop&query)\n",
576 *(p_gpm + 3));
577 break;
578 default:
579 break;
580 }
581}
582
583static u32 ar9003_mci_wait_for_gpm(struct ath_hw *ah, u8 gpm_type,
584 u8 gpm_opcode, int time_out)
585{
586 struct ath_common *common = ath9k_hw_common(ah);
587 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
588 u32 *p_gpm = NULL, mismatch = 0, more_data;
589 u32 offset;
590 u8 recv_type = 0, recv_opcode = 0;
591 bool b_is_bt_cal_done = (gpm_type == MCI_GPM_BT_CAL_DONE);
592
593 more_data = time_out ? MCI_GPM_NOMORE : MCI_GPM_MORE;
594
595 while (time_out > 0) {
596 if (p_gpm) {
597 MCI_GPM_RECYCLE(p_gpm);
598 p_gpm = NULL;
599 }
600
601 if (more_data != MCI_GPM_MORE)
602 time_out = ar9003_mci_wait_for_interrupt(ah,
603 AR_MCI_INTERRUPT_RX_MSG_RAW,
604 AR_MCI_INTERRUPT_RX_MSG_GPM,
605 time_out);
606
607 if (!time_out)
608 break;
609
610 offset = ar9003_mci_get_next_gpm_offset(ah, &more_data);
611
612 if (offset == MCI_GPM_INVALID)
613 continue;
614
615 p_gpm = (u32 *) (mci->gpm_buf + offset);
616 recv_type = MCI_GPM_TYPE(p_gpm);
617 recv_opcode = MCI_GPM_OPCODE(p_gpm);
618
619 if (MCI_GPM_IS_CAL_TYPE(recv_type)) {
620 if (recv_type == gpm_type) {
621 if ((gpm_type == MCI_GPM_BT_CAL_DONE) &&
622 !b_is_bt_cal_done) {
623 gpm_type = MCI_GPM_BT_CAL_GRANT;
624 continue;
625 }
626 break;
627 }
628 } else if ((recv_type == gpm_type) &&
629 (recv_opcode == gpm_opcode))
630 break;
631
632 /*
633 * check if it's cal_grant
634 *
635 * When we're waiting for cal_grant in reset routine,
636 * it's possible that BT sends out cal_request at the
637 * same time. Since BT's calibration doesn't happen
638 * that often, we'll let BT completes calibration then
639 * we continue to wait for cal_grant from BT.
640 * Orginal: Wait BT_CAL_GRANT.
641 * New: Receive BT_CAL_REQ -> send WLAN_CAL_GRANT->wait
642 * BT_CAL_DONE -> Wait BT_CAL_GRANT.
643 */
644
645 if ((gpm_type == MCI_GPM_BT_CAL_GRANT) &&
646 (recv_type == MCI_GPM_BT_CAL_REQ)) {
647
648 u32 payload[4] = {0, 0, 0, 0};
649
650 gpm_type = MCI_GPM_BT_CAL_DONE;
651 MCI_GPM_SET_CAL_TYPE(payload,
652 MCI_GPM_WLAN_CAL_GRANT);
653 ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16,
654 false, false);
655 continue;
656 } else {
657 ath_dbg(common, MCI, "MCI GPM subtype not match 0x%x\n",
658 *(p_gpm + 1));
659 mismatch++;
660 ar9003_mci_process_gpm_extra(ah, recv_type,
661 recv_opcode, p_gpm);
662 }
663 }
664
665 if (p_gpm) {
666 MCI_GPM_RECYCLE(p_gpm);
667 p_gpm = NULL;
668 }
669
670 if (time_out <= 0)
671 time_out = 0;
672
673 while (more_data == MCI_GPM_MORE) {
674 offset = ar9003_mci_get_next_gpm_offset(ah, &more_data);
675 if (offset == MCI_GPM_INVALID)
676 break;
677
678 p_gpm = (u32 *) (mci->gpm_buf + offset);
679 recv_type = MCI_GPM_TYPE(p_gpm);
680 recv_opcode = MCI_GPM_OPCODE(p_gpm);
681
682 if (!MCI_GPM_IS_CAL_TYPE(recv_type))
683 ar9003_mci_process_gpm_extra(ah, recv_type,
684 recv_opcode, p_gpm);
685
686 MCI_GPM_RECYCLE(p_gpm);
687 }
688
689 return time_out;
690}
691
692bool ar9003_mci_start_reset(struct ath_hw *ah, struct ath9k_channel *chan)
693{
694 struct ath_common *common = ath9k_hw_common(ah);
695 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
696 u32 payload[4] = {0, 0, 0, 0};
697
698 ar9003_mci_2g5g_changed(ah, IS_CHAN_2GHZ(chan));
699
700 if (mci_hw->bt_state != MCI_BT_CAL_START)
701 return false;
702
703 mci_hw->bt_state = MCI_BT_CAL;
704
705 /*
706 * MCI FIX: disable mci interrupt here. This is to avoid
707 * SW_MSG_DONE or RX_MSG bits to trigger MCI_INT and
708 * lead to mci_intr reentry.
709 */
710 ar9003_mci_disable_interrupt(ah);
711
712 MCI_GPM_SET_CAL_TYPE(payload, MCI_GPM_WLAN_CAL_GRANT);
713 ar9003_mci_send_message(ah, MCI_GPM, 0, payload,
714 16, true, false);
715
716 /* Wait BT calibration to be completed for 25ms */
717
718 if (ar9003_mci_wait_for_gpm(ah, MCI_GPM_BT_CAL_DONE,
719 0, 25000))
720 ath_dbg(common, MCI, "MCI BT_CAL_DONE received\n");
721 else
722 ath_dbg(common, MCI,
723 "MCI BT_CAL_DONE not received\n");
724
725 mci_hw->bt_state = MCI_BT_AWAKE;
726 /* MCI FIX: enable mci interrupt here */
727 ar9003_mci_enable_interrupt(ah);
728
729 return true;
730}
731
732int ar9003_mci_end_reset(struct ath_hw *ah, struct ath9k_channel *chan,
733 struct ath9k_hw_cal_data *caldata)
734{
735 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
736
737 if (!mci_hw->ready)
738 return 0;
739
740 if (!IS_CHAN_2GHZ(chan) || (mci_hw->bt_state != MCI_BT_SLEEP))
741 goto exit;
742
743 if (!ar9003_mci_check_int(ah, AR_MCI_INTERRUPT_RX_MSG_REMOTE_RESET) &&
744 !ar9003_mci_check_int(ah, AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE))
745 goto exit;
746
747 /*
748 * BT is sleeping. Check if BT wakes up during
749 * WLAN calibration. If BT wakes up during
750 * WLAN calibration, need to go through all
751 * message exchanges again and recal.
752 */
753 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
754 (AR_MCI_INTERRUPT_RX_MSG_REMOTE_RESET |
755 AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE));
756
757 ar9003_mci_remote_reset(ah, true);
758 ar9003_mci_send_sys_waking(ah, true);
759 udelay(1);
760
761 if (IS_CHAN_2GHZ(chan))
762 ar9003_mci_send_lna_transfer(ah, true);
763
764 mci_hw->bt_state = MCI_BT_AWAKE;
765
766 REG_CLR_BIT(ah, AR_PHY_TIMING4,
767 1 << AR_PHY_TIMING_CONTROL4_DO_GAIN_DC_IQ_CAL_SHIFT);
768
769 if (caldata) {
770 clear_bit(TXIQCAL_DONE, &caldata->cal_flags);
771 clear_bit(TXCLCAL_DONE, &caldata->cal_flags);
772 clear_bit(RTT_DONE, &caldata->cal_flags);
773 }
774
775 if (!ath9k_hw_init_cal(ah, chan))
776 return -EIO;
777
778 REG_SET_BIT(ah, AR_PHY_TIMING4,
779 1 << AR_PHY_TIMING_CONTROL4_DO_GAIN_DC_IQ_CAL_SHIFT);
780
781exit:
782 ar9003_mci_enable_interrupt(ah);
783 return 0;
784}
785
786static void ar9003_mci_mute_bt(struct ath_hw *ah)
787{
788 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
789
790 /* disable all MCI messages */
791 REG_WRITE(ah, AR_MCI_MSG_ATTRIBUTES_TABLE, 0xffff0000);
792 REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS0, 0xffffffff);
793 REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS1, 0xffffffff);
794 REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS2, 0xffffffff);
795 REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS3, 0xffffffff);
796 REG_SET_BIT(ah, AR_MCI_TX_CTRL, AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
797
798 /* wait pending HW messages to flush out */
799 udelay(10);
800
801 /*
802 * Send LNA_TAKE and SYS_SLEEPING when
803 * 1. reset not after resuming from full sleep
804 * 2. before reset MCI RX, to quiet BT and avoid MCI RX misalignment
805 */
806 if (MCI_ANT_ARCH_PA_LNA_SHARED(mci)) {
807 ar9003_mci_send_lna_take(ah, true);
808 udelay(5);
809 }
810
811 ar9003_mci_send_sys_sleeping(ah, true);
812}
813
814static void ar9003_mci_osla_setup(struct ath_hw *ah, bool enable)
815{
816 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
817 u32 thresh;
818
819 if (!enable) {
820 REG_CLR_BIT(ah, AR_BTCOEX_CTRL,
821 AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
822 return;
823 }
824 REG_RMW_FIELD(ah, AR_MCI_SCHD_TABLE_2, AR_MCI_SCHD_TABLE_2_HW_BASED, 1);
825 REG_RMW_FIELD(ah, AR_MCI_SCHD_TABLE_2,
826 AR_MCI_SCHD_TABLE_2_MEM_BASED, 1);
827
828 if (AR_SREV_9565(ah))
829 REG_RMW_FIELD(ah, AR_MCI_MISC, AR_MCI_MISC_HW_FIX_EN, 1);
830
831 if (!(mci->config & ATH_MCI_CONFIG_DISABLE_AGGR_THRESH)) {
832 thresh = MS(mci->config, ATH_MCI_CONFIG_AGGR_THRESH);
833 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
834 AR_BTCOEX_CTRL_AGGR_THRESH, thresh);
835 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
836 AR_BTCOEX_CTRL_TIME_TO_NEXT_BT_THRESH_EN, 1);
837 } else
838 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
839 AR_BTCOEX_CTRL_TIME_TO_NEXT_BT_THRESH_EN, 0);
840
841 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
842 AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN, 1);
843}
844
845static void ar9003_mci_stat_setup(struct ath_hw *ah)
846{
847 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
848
849 if (!AR_SREV_9565(ah))
850 return;
851
852 if (mci->config & ATH_MCI_CONFIG_MCI_STAT_DBG) {
853 REG_RMW_FIELD(ah, AR_MCI_DBG_CNT_CTRL,
854 AR_MCI_DBG_CNT_CTRL_ENABLE, 1);
855 REG_RMW_FIELD(ah, AR_MCI_DBG_CNT_CTRL,
856 AR_MCI_DBG_CNT_CTRL_BT_LINKID,
857 MCI_STAT_ALL_BT_LINKID);
858 } else {
859 REG_RMW_FIELD(ah, AR_MCI_DBG_CNT_CTRL,
860 AR_MCI_DBG_CNT_CTRL_ENABLE, 0);
861 }
862}
863
864static void ar9003_mci_set_btcoex_ctrl_9565_1ANT(struct ath_hw *ah)
865{
866 u32 regval;
867
868 regval = SM(1, AR_BTCOEX_CTRL_AR9462_MODE) |
869 SM(1, AR_BTCOEX_CTRL_WBTIMER_EN) |
870 SM(1, AR_BTCOEX_CTRL_PA_SHARED) |
871 SM(1, AR_BTCOEX_CTRL_LNA_SHARED) |
872 SM(1, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
873 SM(1, AR_BTCOEX_CTRL_RX_CHAIN_MASK) |
874 SM(0, AR_BTCOEX_CTRL_1_CHAIN_ACK) |
875 SM(0, AR_BTCOEX_CTRL_1_CHAIN_BCN) |
876 SM(0, AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
877
878 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2,
879 AR_BTCOEX_CTRL2_TX_CHAIN_MASK, 0x1);
880 REG_WRITE(ah, AR_BTCOEX_CTRL, regval);
881}
882
883static void ar9003_mci_set_btcoex_ctrl_9565_2ANT(struct ath_hw *ah)
884{
885 u32 regval;
886
887 regval = SM(1, AR_BTCOEX_CTRL_AR9462_MODE) |
888 SM(1, AR_BTCOEX_CTRL_WBTIMER_EN) |
889 SM(0, AR_BTCOEX_CTRL_PA_SHARED) |
890 SM(0, AR_BTCOEX_CTRL_LNA_SHARED) |
891 SM(2, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
892 SM(1, AR_BTCOEX_CTRL_RX_CHAIN_MASK) |
893 SM(0, AR_BTCOEX_CTRL_1_CHAIN_ACK) |
894 SM(0, AR_BTCOEX_CTRL_1_CHAIN_BCN) |
895 SM(0, AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
896
897 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2,
898 AR_BTCOEX_CTRL2_TX_CHAIN_MASK, 0x0);
899 REG_WRITE(ah, AR_BTCOEX_CTRL, regval);
900}
901
902static void ar9003_mci_set_btcoex_ctrl_9462(struct ath_hw *ah)
903{
904 u32 regval;
905
906 regval = SM(1, AR_BTCOEX_CTRL_AR9462_MODE) |
907 SM(1, AR_BTCOEX_CTRL_WBTIMER_EN) |
908 SM(1, AR_BTCOEX_CTRL_PA_SHARED) |
909 SM(1, AR_BTCOEX_CTRL_LNA_SHARED) |
910 SM(2, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
911 SM(3, AR_BTCOEX_CTRL_RX_CHAIN_MASK) |
912 SM(0, AR_BTCOEX_CTRL_1_CHAIN_ACK) |
913 SM(0, AR_BTCOEX_CTRL_1_CHAIN_BCN) |
914 SM(0, AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
915
916 REG_WRITE(ah, AR_BTCOEX_CTRL, regval);
917}
918
919int ar9003_mci_reset(struct ath_hw *ah, bool en_int, bool is_2g,
920 bool is_full_sleep)
921{
922 struct ath_common *common = ath9k_hw_common(ah);
923 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
924 u32 regval, i;
925
926 ath_dbg(common, MCI, "MCI Reset (full_sleep = %d, is_2g = %d)\n",
927 is_full_sleep, is_2g);
928
929 if (REG_READ(ah, AR_BTCOEX_CTRL) == 0xdeadbeef) {
930 ath_err(common, "BTCOEX control register is dead\n");
931 return -EINVAL;
932 }
933
934 /* Program MCI DMA related registers */
935 REG_WRITE(ah, AR_MCI_GPM_0, mci->gpm_addr);
936 REG_WRITE(ah, AR_MCI_GPM_1, mci->gpm_len);
937 REG_WRITE(ah, AR_MCI_SCHD_TABLE_0, mci->sched_addr);
938
939 /*
940 * To avoid MCI state machine be affected by incoming remote MCI msgs,
941 * MCI mode will be enabled later, right before reset the MCI TX and RX.
942 */
943 if (AR_SREV_9565(ah)) {
944 u8 ant = MS(mci->config, ATH_MCI_CONFIG_ANT_ARCH);
945
946 if (ant == ATH_MCI_ANT_ARCH_1_ANT_PA_LNA_SHARED)
947 ar9003_mci_set_btcoex_ctrl_9565_1ANT(ah);
948 else
949 ar9003_mci_set_btcoex_ctrl_9565_2ANT(ah);
950 } else {
951 ar9003_mci_set_btcoex_ctrl_9462(ah);
952 }
953
954 if (is_2g && !(mci->config & ATH_MCI_CONFIG_DISABLE_OSLA))
955 ar9003_mci_osla_setup(ah, true);
956 else
957 ar9003_mci_osla_setup(ah, false);
958
959 REG_SET_BIT(ah, AR_PHY_GLB_CONTROL,
960 AR_BTCOEX_CTRL_SPDT_ENABLE);
961 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL3,
962 AR_BTCOEX_CTRL3_CONT_INFO_TIMEOUT, 20);
963
964 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, AR_BTCOEX_CTRL2_RX_DEWEIGHT, 0);
965 REG_RMW_FIELD(ah, AR_PCU_MISC, AR_PCU_BT_ANT_PREVENT_RX, 0);
966
967 /* Set the time out to 3.125ms (5 BT slots) */
968 REG_RMW_FIELD(ah, AR_BTCOEX_WL_LNA, AR_BTCOEX_WL_LNA_TIMEOUT, 0x3D090);
969
970 /* concurrent tx priority */
971 if (mci->config & ATH_MCI_CONFIG_CONCUR_TX) {
972 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2,
973 AR_BTCOEX_CTRL2_DESC_BASED_TXPWR_ENABLE, 0);
974 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2,
975 AR_BTCOEX_CTRL2_TXPWR_THRESH, 0x7f);
976 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
977 AR_BTCOEX_CTRL_REDUCE_TXPWR, 0);
978 for (i = 0; i < 8; i++)
979 REG_WRITE(ah, AR_BTCOEX_MAX_TXPWR(i), 0x7f7f7f7f);
980 }
981
982 regval = MS(mci->config, ATH_MCI_CONFIG_CLK_DIV);
983 REG_RMW_FIELD(ah, AR_MCI_TX_CTRL, AR_MCI_TX_CTRL_CLK_DIV, regval);
984 REG_SET_BIT(ah, AR_BTCOEX_CTRL, AR_BTCOEX_CTRL_MCI_MODE_EN);
985
986 /* Resetting the Rx and Tx paths of MCI */
987 regval = REG_READ(ah, AR_MCI_COMMAND2);
988 regval |= SM(1, AR_MCI_COMMAND2_RESET_TX);
989 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
990
991 udelay(1);
992
993 regval &= ~SM(1, AR_MCI_COMMAND2_RESET_TX);
994 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
995
996 if (is_full_sleep) {
997 ar9003_mci_mute_bt(ah);
998 udelay(100);
999 }
1000
1001 /* Check pending GPM msg before MCI Reset Rx */
1002 ar9003_mci_check_gpm_offset(ah);
1003
1004 regval |= SM(1, AR_MCI_COMMAND2_RESET_RX);
1005 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
1006 udelay(1);
1007 regval &= ~SM(1, AR_MCI_COMMAND2_RESET_RX);
1008 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
1009
1010 /* Init GPM offset after MCI Reset Rx */
1011 ar9003_mci_state(ah, MCI_STATE_INIT_GPM_OFFSET);
1012
1013 REG_WRITE(ah, AR_MCI_MSG_ATTRIBUTES_TABLE,
1014 (SM(0xe801, AR_MCI_MSG_ATTRIBUTES_TABLE_INVALID_HDR) |
1015 SM(0x0000, AR_MCI_MSG_ATTRIBUTES_TABLE_CHECKSUM)));
1016
1017 if (MCI_ANT_ARCH_PA_LNA_SHARED(mci))
1018 REG_CLR_BIT(ah, AR_MCI_TX_CTRL,
1019 AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
1020 else
1021 REG_SET_BIT(ah, AR_MCI_TX_CTRL,
1022 AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
1023
1024 ar9003_mci_observation_set_up(ah);
1025
1026 mci->ready = true;
1027 ar9003_mci_prep_interface(ah);
1028 ar9003_mci_stat_setup(ah);
1029
1030 if (en_int)
1031 ar9003_mci_enable_interrupt(ah);
1032
1033 if (ath9k_hw_is_aic_enabled(ah))
1034 ar9003_aic_start_normal(ah);
1035
1036 return 0;
1037}
1038
1039void ar9003_mci_stop_bt(struct ath_hw *ah, bool save_fullsleep)
1040{
1041 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
1042
1043 ar9003_mci_disable_interrupt(ah);
1044
1045 if (mci_hw->ready && !save_fullsleep) {
1046 ar9003_mci_mute_bt(ah);
1047 udelay(20);
1048 REG_WRITE(ah, AR_BTCOEX_CTRL, 0);
1049 }
1050
1051 mci_hw->bt_state = MCI_BT_SLEEP;
1052 mci_hw->ready = false;
1053}
1054
1055static void ar9003_mci_send_2g5g_status(struct ath_hw *ah, bool wait_done)
1056{
1057 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1058 u32 to_set, to_clear;
1059
1060 if (!mci->update_2g5g || (mci->bt_state == MCI_BT_SLEEP))
1061 return;
1062
1063 if (mci->is_2g) {
1064 to_clear = MCI_2G_FLAGS_CLEAR_MASK;
1065 to_set = MCI_2G_FLAGS_SET_MASK;
1066 } else {
1067 to_clear = MCI_5G_FLAGS_CLEAR_MASK;
1068 to_set = MCI_5G_FLAGS_SET_MASK;
1069 }
1070
1071 if (to_clear)
1072 ar9003_mci_send_coex_bt_flags(ah, wait_done,
1073 MCI_GPM_COEX_BT_FLAGS_CLEAR,
1074 to_clear);
1075 if (to_set)
1076 ar9003_mci_send_coex_bt_flags(ah, wait_done,
1077 MCI_GPM_COEX_BT_FLAGS_SET,
1078 to_set);
1079}
1080
1081static void ar9003_mci_queue_unsent_gpm(struct ath_hw *ah, u8 header,
1082 u32 *payload, bool queue)
1083{
1084 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1085 u8 type, opcode;
1086
1087 /* check if the message is to be queued */
1088 if (header != MCI_GPM)
1089 return;
1090
1091 type = MCI_GPM_TYPE(payload);
1092 opcode = MCI_GPM_OPCODE(payload);
1093
1094 if (type != MCI_GPM_COEX_AGENT)
1095 return;
1096
1097 switch (opcode) {
1098 case MCI_GPM_COEX_BT_UPDATE_FLAGS:
1099 if (*(((u8 *)payload) + MCI_GPM_COEX_B_BT_FLAGS_OP) ==
1100 MCI_GPM_COEX_BT_FLAGS_READ)
1101 break;
1102
1103 mci->update_2g5g = queue;
1104
1105 break;
1106 case MCI_GPM_COEX_WLAN_CHANNELS:
1107 mci->wlan_channels_update = queue;
1108 break;
1109 case MCI_GPM_COEX_HALT_BT_GPM:
1110 if (*(((u8 *)payload) + MCI_GPM_COEX_B_HALT_STATE) ==
1111 MCI_GPM_COEX_BT_GPM_UNHALT) {
1112 mci->unhalt_bt_gpm = queue;
1113
1114 if (!queue)
1115 mci->halted_bt_gpm = false;
1116 }
1117
1118 if (*(((u8 *)payload) + MCI_GPM_COEX_B_HALT_STATE) ==
1119 MCI_GPM_COEX_BT_GPM_HALT) {
1120
1121 mci->halted_bt_gpm = !queue;
1122 }
1123
1124 break;
1125 default:
1126 break;
1127 }
1128}
1129
1130void ar9003_mci_2g5g_switch(struct ath_hw *ah, bool force)
1131{
1132 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1133
1134 if (!mci->update_2g5g && !force)
1135 return;
1136
1137 if (mci->is_2g) {
1138 ar9003_mci_send_2g5g_status(ah, true);
1139 ar9003_mci_send_lna_transfer(ah, true);
1140 udelay(5);
1141
1142 REG_CLR_BIT(ah, AR_MCI_TX_CTRL,
1143 AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
1144 REG_CLR_BIT(ah, AR_PHY_GLB_CONTROL,
1145 AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
1146
1147 if (!(mci->config & ATH_MCI_CONFIG_DISABLE_OSLA))
1148 ar9003_mci_osla_setup(ah, true);
1149
1150 if (AR_SREV_9462(ah))
1151 REG_WRITE(ah, AR_SELFGEN_MASK, 0x02);
1152 } else {
1153 ar9003_mci_send_lna_take(ah, true);
1154 udelay(5);
1155
1156 REG_SET_BIT(ah, AR_MCI_TX_CTRL,
1157 AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
1158 REG_SET_BIT(ah, AR_PHY_GLB_CONTROL,
1159 AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
1160
1161 ar9003_mci_osla_setup(ah, false);
1162 ar9003_mci_send_2g5g_status(ah, true);
1163 }
1164}
1165
1166bool ar9003_mci_send_message(struct ath_hw *ah, u8 header, u32 flag,
1167 u32 *payload, u8 len, bool wait_done,
1168 bool check_bt)
1169{
1170 struct ath_common *common = ath9k_hw_common(ah);
1171 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1172 bool msg_sent = false;
1173 u32 regval;
1174 u32 saved_mci_int_en;
1175 int i;
1176
1177 saved_mci_int_en = REG_READ(ah, AR_MCI_INTERRUPT_EN);
1178 regval = REG_READ(ah, AR_BTCOEX_CTRL);
1179
1180 if ((regval == 0xdeadbeef) || !(regval & AR_BTCOEX_CTRL_MCI_MODE_EN)) {
1181 ath_dbg(common, MCI,
1182 "MCI Not sending 0x%x. MCI is not enabled. full_sleep = %d\n",
1183 header, (ah->power_mode == ATH9K_PM_FULL_SLEEP) ? 1 : 0);
1184 ar9003_mci_queue_unsent_gpm(ah, header, payload, true);
1185 return false;
1186 } else if (check_bt && (mci->bt_state == MCI_BT_SLEEP)) {
1187 ath_dbg(common, MCI,
1188 "MCI Don't send message 0x%x. BT is in sleep state\n",
1189 header);
1190 ar9003_mci_queue_unsent_gpm(ah, header, payload, true);
1191 return false;
1192 }
1193
1194 if (wait_done)
1195 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, 0);
1196
1197 /* Need to clear SW_MSG_DONE raw bit before wait */
1198
1199 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
1200 (AR_MCI_INTERRUPT_SW_MSG_DONE |
1201 AR_MCI_INTERRUPT_MSG_FAIL_MASK));
1202
1203 if (payload) {
1204 for (i = 0; (i * 4) < len; i++)
1205 REG_WRITE(ah, (AR_MCI_TX_PAYLOAD0 + i * 4),
1206 *(payload + i));
1207 }
1208
1209 REG_WRITE(ah, AR_MCI_COMMAND0,
1210 (SM((flag & MCI_FLAG_DISABLE_TIMESTAMP),
1211 AR_MCI_COMMAND0_DISABLE_TIMESTAMP) |
1212 SM(len, AR_MCI_COMMAND0_LEN) |
1213 SM(header, AR_MCI_COMMAND0_HEADER)));
1214
1215 if (wait_done &&
1216 !(ar9003_mci_wait_for_interrupt(ah, AR_MCI_INTERRUPT_RAW,
1217 AR_MCI_INTERRUPT_SW_MSG_DONE, 500)))
1218 ar9003_mci_queue_unsent_gpm(ah, header, payload, true);
1219 else {
1220 ar9003_mci_queue_unsent_gpm(ah, header, payload, false);
1221 msg_sent = true;
1222 }
1223
1224 if (wait_done)
1225 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, saved_mci_int_en);
1226
1227 return msg_sent;
1228}
1229EXPORT_SYMBOL(ar9003_mci_send_message);
1230
1231void ar9003_mci_init_cal_req(struct ath_hw *ah, bool *is_reusable)
1232{
1233 struct ath_common *common = ath9k_hw_common(ah);
1234 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
1235 u32 pld[4] = {0, 0, 0, 0};
1236
1237 if ((mci_hw->bt_state != MCI_BT_AWAKE) ||
1238 (mci_hw->config & ATH_MCI_CONFIG_DISABLE_MCI_CAL))
1239 return;
1240
1241 MCI_GPM_SET_CAL_TYPE(pld, MCI_GPM_WLAN_CAL_REQ);
1242 pld[MCI_GPM_WLAN_CAL_W_SEQUENCE] = mci_hw->wlan_cal_seq++;
1243
1244 ar9003_mci_send_message(ah, MCI_GPM, 0, pld, 16, true, false);
1245
1246 if (ar9003_mci_wait_for_gpm(ah, MCI_GPM_BT_CAL_GRANT, 0, 50000)) {
1247 ath_dbg(common, MCI, "MCI BT_CAL_GRANT received\n");
1248 } else {
1249 *is_reusable = false;
1250 ath_dbg(common, MCI, "MCI BT_CAL_GRANT not received\n");
1251 }
1252}
1253
1254void ar9003_mci_init_cal_done(struct ath_hw *ah)
1255{
1256 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
1257 u32 pld[4] = {0, 0, 0, 0};
1258
1259 if ((mci_hw->bt_state != MCI_BT_AWAKE) ||
1260 (mci_hw->config & ATH_MCI_CONFIG_DISABLE_MCI_CAL))
1261 return;
1262
1263 MCI_GPM_SET_CAL_TYPE(pld, MCI_GPM_WLAN_CAL_DONE);
1264 pld[MCI_GPM_WLAN_CAL_W_SEQUENCE] = mci_hw->wlan_cal_done++;
1265 ar9003_mci_send_message(ah, MCI_GPM, 0, pld, 16, true, false);
1266}
1267
1268int ar9003_mci_setup(struct ath_hw *ah, u32 gpm_addr, void *gpm_buf,
1269 u16 len, u32 sched_addr)
1270{
1271 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1272
1273 mci->gpm_addr = gpm_addr;
1274 mci->gpm_buf = gpm_buf;
1275 mci->gpm_len = len;
1276 mci->sched_addr = sched_addr;
1277
1278 return ar9003_mci_reset(ah, true, true, true);
1279}
1280EXPORT_SYMBOL(ar9003_mci_setup);
1281
1282void ar9003_mci_cleanup(struct ath_hw *ah)
1283{
1284 /* Turn off MCI and Jupiter mode. */
1285 REG_WRITE(ah, AR_BTCOEX_CTRL, 0x00);
1286 ar9003_mci_disable_interrupt(ah);
1287}
1288EXPORT_SYMBOL(ar9003_mci_cleanup);
1289
1290u32 ar9003_mci_state(struct ath_hw *ah, u32 state_type)
1291{
1292 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1293 u32 value = 0, tsf;
1294 u8 query_type;
1295
1296 switch (state_type) {
1297 case MCI_STATE_ENABLE:
1298 if (mci->ready) {
1299 value = REG_READ(ah, AR_BTCOEX_CTRL);
1300
1301 if ((value == 0xdeadbeef) || (value == 0xffffffff))
1302 value = 0;
1303 }
1304 value &= AR_BTCOEX_CTRL_MCI_MODE_EN;
1305 break;
1306 case MCI_STATE_INIT_GPM_OFFSET:
1307 value = MS(REG_READ(ah, AR_MCI_GPM_1), AR_MCI_GPM_WRITE_PTR);
1308
1309 if (value < mci->gpm_len)
1310 mci->gpm_idx = value;
1311 else
1312 mci->gpm_idx = 0;
1313 break;
1314 case MCI_STATE_LAST_SCHD_MSG_OFFSET:
1315 value = MS(REG_READ(ah, AR_MCI_RX_STATUS),
1316 AR_MCI_RX_LAST_SCHD_MSG_INDEX);
1317 /* Make it in bytes */
1318 value <<= 4;
1319 break;
1320 case MCI_STATE_REMOTE_SLEEP:
1321 value = MS(REG_READ(ah, AR_MCI_RX_STATUS),
1322 AR_MCI_RX_REMOTE_SLEEP) ?
1323 MCI_BT_SLEEP : MCI_BT_AWAKE;
1324 break;
1325 case MCI_STATE_SET_BT_AWAKE:
1326 mci->bt_state = MCI_BT_AWAKE;
1327 ar9003_mci_send_coex_version_query(ah, true);
1328 ar9003_mci_send_coex_wlan_channels(ah, true);
1329
1330 if (mci->unhalt_bt_gpm)
1331 ar9003_mci_send_coex_halt_bt_gpm(ah, false, true);
1332
1333 ar9003_mci_2g5g_switch(ah, false);
1334 break;
1335 case MCI_STATE_RESET_REQ_WAKE:
1336 ar9003_mci_reset_req_wakeup(ah);
1337 mci->update_2g5g = true;
1338
1339 if (mci->config & ATH_MCI_CONFIG_MCI_OBS_MASK) {
1340 /* Check if we still have control of the GPIOs */
1341 if ((REG_READ(ah, AR_GLB_GPIO_CONTROL) &
1342 ATH_MCI_CONFIG_MCI_OBS_GPIO) !=
1343 ATH_MCI_CONFIG_MCI_OBS_GPIO) {
1344 ar9003_mci_observation_set_up(ah);
1345 }
1346 }
1347 break;
1348 case MCI_STATE_SEND_WLAN_COEX_VERSION:
1349 ar9003_mci_send_coex_version_response(ah, true);
1350 break;
1351 case MCI_STATE_SEND_VERSION_QUERY:
1352 ar9003_mci_send_coex_version_query(ah, true);
1353 break;
1354 case MCI_STATE_SEND_STATUS_QUERY:
1355 query_type = MCI_GPM_COEX_QUERY_BT_TOPOLOGY;
1356 ar9003_mci_send_coex_bt_status_query(ah, true, query_type);
1357 break;
1358 case MCI_STATE_RECOVER_RX:
1359 tsf = ath9k_hw_gettsf32(ah);
1360 if ((tsf - mci->last_recovery) <= MCI_RECOVERY_DUR_TSF) {
1361 ath_dbg(ath9k_hw_common(ah), MCI,
1362 "(MCI) ignore Rx recovery\n");
1363 break;
1364 }
1365 ath_dbg(ath9k_hw_common(ah), MCI, "(MCI) RECOVER RX\n");
1366 mci->last_recovery = tsf;
1367 ar9003_mci_prep_interface(ah);
1368 mci->query_bt = true;
1369 mci->need_flush_btinfo = true;
1370 ar9003_mci_send_coex_wlan_channels(ah, true);
1371 ar9003_mci_2g5g_switch(ah, false);
1372 break;
1373 case MCI_STATE_NEED_FTP_STOMP:
1374 value = !(mci->config & ATH_MCI_CONFIG_DISABLE_FTP_STOMP);
1375 break;
1376 case MCI_STATE_NEED_FLUSH_BT_INFO:
1377 value = (!mci->unhalt_bt_gpm && mci->need_flush_btinfo) ? 1 : 0;
1378 mci->need_flush_btinfo = false;
1379 break;
1380 case MCI_STATE_AIC_CAL:
1381 if (ath9k_hw_is_aic_enabled(ah))
1382 value = ar9003_aic_calibration(ah);
1383 break;
1384 case MCI_STATE_AIC_START:
1385 if (ath9k_hw_is_aic_enabled(ah))
1386 ar9003_aic_start_normal(ah);
1387 break;
1388 case MCI_STATE_AIC_CAL_RESET:
1389 if (ath9k_hw_is_aic_enabled(ah))
1390 value = ar9003_aic_cal_reset(ah);
1391 break;
1392 case MCI_STATE_AIC_CAL_SINGLE:
1393 if (ath9k_hw_is_aic_enabled(ah))
1394 value = ar9003_aic_calibration_single(ah);
1395 break;
1396 default:
1397 break;
1398 }
1399
1400 return value;
1401}
1402EXPORT_SYMBOL(ar9003_mci_state);
1403
1404void ar9003_mci_bt_gain_ctrl(struct ath_hw *ah)
1405{
1406 struct ath_common *common = ath9k_hw_common(ah);
1407 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1408
1409 ath_dbg(common, MCI, "Give LNA and SPDT control to BT\n");
1410
1411 ar9003_mci_send_lna_take(ah, true);
1412 udelay(50);
1413
1414 REG_SET_BIT(ah, AR_PHY_GLB_CONTROL, AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
1415 mci->is_2g = false;
1416 mci->update_2g5g = true;
1417 ar9003_mci_send_2g5g_status(ah, true);
1418
1419 /* Force another 2g5g update at next scanning */
1420 mci->update_2g5g = true;
1421}
1422
1423void ar9003_mci_set_power_awake(struct ath_hw *ah)
1424{
1425 u32 btcoex_ctrl2, diag_sw;
1426 int i;
1427 u8 lna_ctrl, bt_sleep;
1428
1429 for (i = 0; i < AH_WAIT_TIMEOUT; i++) {
1430 btcoex_ctrl2 = REG_READ(ah, AR_BTCOEX_CTRL2);
1431 if (btcoex_ctrl2 != 0xdeadbeef)
1432 break;
1433 udelay(AH_TIME_QUANTUM);
1434 }
1435 REG_WRITE(ah, AR_BTCOEX_CTRL2, (btcoex_ctrl2 | BIT(23)));
1436
1437 for (i = 0; i < AH_WAIT_TIMEOUT; i++) {
1438 diag_sw = REG_READ(ah, AR_DIAG_SW);
1439 if (diag_sw != 0xdeadbeef)
1440 break;
1441 udelay(AH_TIME_QUANTUM);
1442 }
1443 REG_WRITE(ah, AR_DIAG_SW, (diag_sw | BIT(27) | BIT(19) | BIT(18)));
1444 lna_ctrl = REG_READ(ah, AR_OBS_BUS_CTRL) & 0x3;
1445 bt_sleep = MS(REG_READ(ah, AR_MCI_RX_STATUS), AR_MCI_RX_REMOTE_SLEEP);
1446
1447 REG_WRITE(ah, AR_BTCOEX_CTRL2, btcoex_ctrl2);
1448 REG_WRITE(ah, AR_DIAG_SW, diag_sw);
1449
1450 if (bt_sleep && (lna_ctrl == 2)) {
1451 REG_SET_BIT(ah, AR_BTCOEX_RC, 0x1);
1452 REG_CLR_BIT(ah, AR_BTCOEX_RC, 0x1);
1453 udelay(50);
1454 }
1455}
1456
1457void ar9003_mci_check_gpm_offset(struct ath_hw *ah)
1458{
1459 struct ath_common *common = ath9k_hw_common(ah);
1460 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1461 u32 offset;
1462
1463 /*
1464 * This should only be called before "MAC Warm Reset" or "MCI Reset Rx".
1465 */
1466 offset = MS(REG_READ(ah, AR_MCI_GPM_1), AR_MCI_GPM_WRITE_PTR);
1467 if (mci->gpm_idx == offset)
1468 return;
1469 ath_dbg(common, MCI, "GPM cached write pointer mismatch %d %d\n",
1470 mci->gpm_idx, offset);
1471 mci->query_bt = true;
1472 mci->need_flush_btinfo = true;
1473 mci->gpm_idx = 0;
1474}
1475
1476u32 ar9003_mci_get_next_gpm_offset(struct ath_hw *ah, u32 *more)
1477{
1478 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1479 u32 offset, more_gpm = 0, gpm_ptr;
1480
1481 /*
1482 * This could be useful to avoid new GPM message interrupt which
1483 * may lead to spurious interrupt after power sleep, or multiple
1484 * entry of ath_mci_intr().
1485 * Adding empty GPM check by returning HAL_MCI_GPM_INVALID can
1486 * alleviate this effect, but clearing GPM RX interrupt bit is
1487 * safe, because whether this is called from hw or driver code
1488 * there must be an interrupt bit set/triggered initially
1489 */
1490 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
1491 AR_MCI_INTERRUPT_RX_MSG_GPM);
1492
1493 gpm_ptr = MS(REG_READ(ah, AR_MCI_GPM_1), AR_MCI_GPM_WRITE_PTR);
1494 offset = gpm_ptr;
1495
1496 if (!offset)
1497 offset = mci->gpm_len - 1;
1498 else if (offset >= mci->gpm_len) {
1499 if (offset != 0xFFFF)
1500 offset = 0;
1501 } else {
1502 offset--;
1503 }
1504
1505 if ((offset == 0xFFFF) || (gpm_ptr == mci->gpm_idx)) {
1506 offset = MCI_GPM_INVALID;
1507 more_gpm = MCI_GPM_NOMORE;
1508 goto out;
1509 }
1510 for (;;) {
1511 u32 temp_index;
1512
1513 /* skip reserved GPM if any */
1514
1515 if (offset != mci->gpm_idx)
1516 more_gpm = MCI_GPM_MORE;
1517 else
1518 more_gpm = MCI_GPM_NOMORE;
1519
1520 temp_index = mci->gpm_idx;
1521
1522 if (temp_index >= mci->gpm_len)
1523 temp_index = 0;
1524
1525 mci->gpm_idx++;
1526
1527 if (mci->gpm_idx >= mci->gpm_len)
1528 mci->gpm_idx = 0;
1529
1530 if (ar9003_mci_is_gpm_valid(ah, temp_index)) {
1531 offset = temp_index;
1532 break;
1533 }
1534
1535 if (more_gpm == MCI_GPM_NOMORE) {
1536 offset = MCI_GPM_INVALID;
1537 break;
1538 }
1539 }
1540
1541 if (offset != MCI_GPM_INVALID)
1542 offset <<= 4;
1543out:
1544 if (more)
1545 *more = more_gpm;
1546
1547 return offset;
1548}
1549EXPORT_SYMBOL(ar9003_mci_get_next_gpm_offset);
1550
1551void ar9003_mci_set_bt_version(struct ath_hw *ah, u8 major, u8 minor)
1552{
1553 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1554
1555 mci->bt_ver_major = major;
1556 mci->bt_ver_minor = minor;
1557 mci->bt_version_known = true;
1558 ath_dbg(ath9k_hw_common(ah), MCI, "MCI BT version set: %d.%d\n",
1559 mci->bt_ver_major, mci->bt_ver_minor);
1560}
1561EXPORT_SYMBOL(ar9003_mci_set_bt_version);
1562
1563void ar9003_mci_send_wlan_channels(struct ath_hw *ah)
1564{
1565 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1566
1567 mci->wlan_channels_update = true;
1568 ar9003_mci_send_coex_wlan_channels(ah, true);
1569}
1570EXPORT_SYMBOL(ar9003_mci_send_wlan_channels);
1571
1572u16 ar9003_mci_get_max_txpower(struct ath_hw *ah, u8 ctlmode)
1573{
1574 if (!ah->btcoex_hw.mci.concur_tx)
1575 goto out;
1576
1577 if (ctlmode == CTL_2GHT20)
1578 return ATH_BTCOEX_HT20_MAX_TXPOWER;
1579 else if (ctlmode == CTL_2GHT40)
1580 return ATH_BTCOEX_HT40_MAX_TXPOWER;
1581
1582out:
1583 return -1;
1584}