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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / wireless / ath / ath9k / ar9003_aic.c
blobd0f1e8bcc846b5953634e6e02aca200ba1c57663
1 /*
2 * Copyright (c) 2015 Qualcomm Atheros 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 "hw.h"
18 #include "hw-ops.h"
19 #include "ar9003_mci.h"
20 #include "ar9003_aic.h"
21 #include "ar9003_phy.h"
22 #include "reg_aic.h"
23
24 static const u8 com_att_db_table[ATH_AIC_MAX_COM_ATT_DB_TABLE] = {
25 0, 3, 9, 15, 21, 27
26 };
27
28 static const u16 aic_lin_table[ATH_AIC_MAX_AIC_LIN_TABLE] = {
29 8191, 7300, 6506, 5799, 5168, 4606, 4105, 3659,
30 3261, 2906, 2590, 2309, 2057, 1834, 1634, 1457,
31 1298, 1157, 1031, 919, 819, 730, 651, 580,
32 517, 461, 411, 366, 326, 291, 259, 231,
33 206, 183, 163, 146, 130, 116, 103, 92,
34 82, 73, 65, 58, 52, 46, 41, 37,
35 33, 29, 26, 23, 21, 18, 16, 15,
36 13, 12, 10, 9, 8, 7, 7, 6,
37 5, 5, 4, 4, 3
38 };
39
40 static bool ar9003_hw_is_aic_enabled(struct ath_hw *ah)
41 {
42 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
43
44 /*
45 * Disable AIC for now, until we have all the
46 * HW code and the driver-layer support ready.
47 */
48 return false;
49
50 if (mci_hw->config & ATH_MCI_CONFIG_DISABLE_AIC)
51 return false;
52
53 return true;
54 }
55
56 static int16_t ar9003_aic_find_valid(bool *cal_sram_valid,
57 bool dir, u8 index)
58 {
59 int16_t i;
60
61 if (dir) {
62 for (i = index + 1; i < ATH_AIC_MAX_BT_CHANNEL; i++) {
63 if (cal_sram_valid[i])
64 break;
65 }
66 } else {
67 for (i = index - 1; i >= 0; i--) {
68 if (cal_sram_valid[i])
69 break;
70 }
71 }
72
73 if ((i >= ATH_AIC_MAX_BT_CHANNEL) || (i < 0))
74 i = -1;
75
76 return i;
77 }
78
79 /*
80 * type 0: aic_lin_table, 1: com_att_db_table
81 */
82 static int16_t ar9003_aic_find_index(u8 type, int16_t value)
83 {
84 int16_t i = -1;
85
86 if (type == 0) {
87 for (i = ATH_AIC_MAX_AIC_LIN_TABLE - 1; i >= 0; i--) {
88 if (aic_lin_table[i] >= value)
89 break;
90 }
91 } else if (type == 1) {
92 for (i = 0; i < ATH_AIC_MAX_COM_ATT_DB_TABLE; i++) {
93 if (com_att_db_table[i] > value) {
94 i--;
95 break;
96 }
97 }
98
99 if (i >= ATH_AIC_MAX_COM_ATT_DB_TABLE)
100 i = -1;
101 }
102
103 return i;
104 }
105
106 static void ar9003_aic_gain_table(struct ath_hw *ah)
107 {
108 u32 aic_atten_word[19], i;
109
110 /* Config LNA gain difference */
111 REG_WRITE(ah, AR_PHY_BT_COEX_4, 0x2c200a00);
112 REG_WRITE(ah, AR_PHY_BT_COEX_5, 0x5c4e4438);
113
114 /* Program gain table */
115 aic_atten_word[0] = (0x1 & 0xf) << 14 | (0x1f & 0x1f) << 9 | (0x0 & 0xf) << 5 |
116 (0x1f & 0x1f); /* -01 dB: 4'd1, 5'd31, 00 dB: 4'd0, 5'd31 */
117 aic_atten_word[1] = (0x3 & 0xf) << 14 | (0x1f & 0x1f) << 9 | (0x2 & 0xf) << 5 |
118 (0x1f & 0x1f); /* -03 dB: 4'd3, 5'd31, -02 dB: 4'd2, 5'd31 */
119 aic_atten_word[2] = (0x5 & 0xf) << 14 | (0x1f & 0x1f) << 9 | (0x4 & 0xf) << 5 |
120 (0x1f & 0x1f); /* -05 dB: 4'd5, 5'd31, -04 dB: 4'd4, 5'd31 */
121 aic_atten_word[3] = (0x1 & 0xf) << 14 | (0x1e & 0x1f) << 9 | (0x0 & 0xf) << 5 |
122 (0x1e & 0x1f); /* -07 dB: 4'd1, 5'd30, -06 dB: 4'd0, 5'd30 */
123 aic_atten_word[4] = (0x3 & 0xf) << 14 | (0x1e & 0x1f) << 9 | (0x2 & 0xf) << 5 |
124 (0x1e & 0x1f); /* -09 dB: 4'd3, 5'd30, -08 dB: 4'd2, 5'd30 */
125 aic_atten_word[5] = (0x5 & 0xf) << 14 | (0x1e & 0x1f) << 9 | (0x4 & 0xf) << 5 |
126 (0x1e & 0x1f); /* -11 dB: 4'd5, 5'd30, -10 dB: 4'd4, 5'd30 */
127 aic_atten_word[6] = (0x1 & 0xf) << 14 | (0xf & 0x1f) << 9 | (0x0 & 0xf) << 5 |
128 (0xf & 0x1f); /* -13 dB: 4'd1, 5'd15, -12 dB: 4'd0, 5'd15 */
129 aic_atten_word[7] = (0x3 & 0xf) << 14 | (0xf & 0x1f) << 9 | (0x2 & 0xf) << 5 |
130 (0xf & 0x1f); /* -15 dB: 4'd3, 5'd15, -14 dB: 4'd2, 5'd15 */
131 aic_atten_word[8] = (0x5 & 0xf) << 14 | (0xf & 0x1f) << 9 | (0x4 & 0xf) << 5 |
132 (0xf & 0x1f); /* -17 dB: 4'd5, 5'd15, -16 dB: 4'd4, 5'd15 */
133 aic_atten_word[9] = (0x1 & 0xf) << 14 | (0x7 & 0x1f) << 9 | (0x0 & 0xf) << 5 |
134 (0x7 & 0x1f); /* -19 dB: 4'd1, 5'd07, -18 dB: 4'd0, 5'd07 */
135 aic_atten_word[10] = (0x3 & 0xf) << 14 | (0x7 & 0x1f) << 9 | (0x2 & 0xf) << 5 |
136 (0x7 & 0x1f); /* -21 dB: 4'd3, 5'd07, -20 dB: 4'd2, 5'd07 */
137 aic_atten_word[11] = (0x5 & 0xf) << 14 | (0x7 & 0x1f) << 9 | (0x4 & 0xf) << 5 |
138 (0x7 & 0x1f); /* -23 dB: 4'd5, 5'd07, -22 dB: 4'd4, 5'd07 */
139 aic_atten_word[12] = (0x7 & 0xf) << 14 | (0x7 & 0x1f) << 9 | (0x6 & 0xf) << 5 |
140 (0x7 & 0x1f); /* -25 dB: 4'd7, 5'd07, -24 dB: 4'd6, 5'd07 */
141 aic_atten_word[13] = (0x3 & 0xf) << 14 | (0x3 & 0x1f) << 9 | (0x2 & 0xf) << 5 |
142 (0x3 & 0x1f); /* -27 dB: 4'd3, 5'd03, -26 dB: 4'd2, 5'd03 */
143 aic_atten_word[14] = (0x5 & 0xf) << 14 | (0x3 & 0x1f) << 9 | (0x4 & 0xf) << 5 |
144 (0x3 & 0x1f); /* -29 dB: 4'd5, 5'd03, -28 dB: 4'd4, 5'd03 */
145 aic_atten_word[15] = (0x1 & 0xf) << 14 | (0x1 & 0x1f) << 9 | (0x0 & 0xf) << 5 |
146 (0x1 & 0x1f); /* -31 dB: 4'd1, 5'd01, -30 dB: 4'd0, 5'd01 */
147 aic_atten_word[16] = (0x3 & 0xf) << 14 | (0x1 & 0x1f) << 9 | (0x2 & 0xf) << 5 |
148 (0x1 & 0x1f); /* -33 dB: 4'd3, 5'd01, -32 dB: 4'd2, 5'd01 */
149 aic_atten_word[17] = (0x5 & 0xf) << 14 | (0x1 & 0x1f) << 9 | (0x4 & 0xf) << 5 |
150 (0x1 & 0x1f); /* -35 dB: 4'd5, 5'd01, -34 dB: 4'd4, 5'd01 */
151 aic_atten_word[18] = (0x7 & 0xf) << 14 | (0x1 & 0x1f) << 9 | (0x6 & 0xf) << 5 |
152 (0x1 & 0x1f); /* -37 dB: 4'd7, 5'd01, -36 dB: 4'd6, 5'd01 */
153
154 /* Write to Gain table with auto increment enabled. */
155 REG_WRITE(ah, (AR_PHY_AIC_SRAM_ADDR_B0 + 0x3000),
156 (ATH_AIC_SRAM_AUTO_INCREMENT |
157 ATH_AIC_SRAM_GAIN_TABLE_OFFSET));
158
159 for (i = 0; i < 19; i++) {
160 REG_WRITE(ah, (AR_PHY_AIC_SRAM_DATA_B0 + 0x3000),
161 aic_atten_word[i]);
162 }
163 }
164
165 static u8 ar9003_aic_cal_start(struct ath_hw *ah, u8 min_valid_count)
166 {
167 struct ath9k_hw_aic *aic = &ah->btcoex_hw.aic;
168 int i;
169
170 /* Write to Gain table with auto increment enabled. */
171 REG_WRITE(ah, (AR_PHY_AIC_SRAM_ADDR_B0 + 0x3000),
172 (ATH_AIC_SRAM_AUTO_INCREMENT |
173 ATH_AIC_SRAM_CAL_OFFSET));
174
175 for (i = 0; i < ATH_AIC_MAX_BT_CHANNEL; i++) {
176 REG_WRITE(ah, (AR_PHY_AIC_SRAM_DATA_B0 + 0x3000), 0);
177 aic->aic_sram[i] = 0;
178 }
179
180 REG_WRITE(ah, AR_PHY_AIC_CTRL_0_B0,
181 (SM(0, AR_PHY_AIC_MON_ENABLE) |
182 SM(127, AR_PHY_AIC_CAL_MAX_HOP_COUNT) |
183 SM(min_valid_count, AR_PHY_AIC_CAL_MIN_VALID_COUNT) |
184 SM(37, AR_PHY_AIC_F_WLAN) |
185 SM(1, AR_PHY_AIC_CAL_CH_VALID_RESET) |
186 SM(0, AR_PHY_AIC_CAL_ENABLE) |
187 SM(0x40, AR_PHY_AIC_BTTX_PWR_THR) |
188 SM(0, AR_PHY_AIC_ENABLE)));
189
190 REG_WRITE(ah, AR_PHY_AIC_CTRL_0_B1,
191 (SM(0, AR_PHY_AIC_MON_ENABLE) |
192 SM(1, AR_PHY_AIC_CAL_CH_VALID_RESET) |
193 SM(0, AR_PHY_AIC_CAL_ENABLE) |
194 SM(0x40, AR_PHY_AIC_BTTX_PWR_THR) |
195 SM(0, AR_PHY_AIC_ENABLE)));
196
197 REG_WRITE(ah, AR_PHY_AIC_CTRL_1_B0,
198 (SM(8, AR_PHY_AIC_CAL_BT_REF_DELAY) |
199 SM(0, AR_PHY_AIC_BT_IDLE_CFG) |
200 SM(1, AR_PHY_AIC_STDBY_COND) |
201 SM(37, AR_PHY_AIC_STDBY_ROT_ATT_DB) |
202 SM(5, AR_PHY_AIC_STDBY_COM_ATT_DB) |
203 SM(15, AR_PHY_AIC_RSSI_MAX) |
204 SM(0, AR_PHY_AIC_RSSI_MIN)));
205
206 REG_WRITE(ah, AR_PHY_AIC_CTRL_1_B1,
207 (SM(15, AR_PHY_AIC_RSSI_MAX) |
208 SM(0, AR_PHY_AIC_RSSI_MIN)));
209
210 REG_WRITE(ah, AR_PHY_AIC_CTRL_2_B0,
211 (SM(44, AR_PHY_AIC_RADIO_DELAY) |
212 SM(8, AR_PHY_AIC_CAL_STEP_SIZE_CORR) |
213 SM(12, AR_PHY_AIC_CAL_ROT_IDX_CORR) |
214 SM(2, AR_PHY_AIC_CAL_CONV_CHECK_FACTOR) |
215 SM(5, AR_PHY_AIC_ROT_IDX_COUNT_MAX) |
216 SM(0, AR_PHY_AIC_CAL_SYNTH_TOGGLE) |
217 SM(0, AR_PHY_AIC_CAL_SYNTH_AFTER_BTRX) |
218 SM(200, AR_PHY_AIC_CAL_SYNTH_SETTLING)));
219
220 REG_WRITE(ah, AR_PHY_AIC_CTRL_3_B0,
221 (SM(2, AR_PHY_AIC_MON_MAX_HOP_COUNT) |
222 SM(1, AR_PHY_AIC_MON_MIN_STALE_COUNT) |
223 SM(1, AR_PHY_AIC_MON_PWR_EST_LONG) |
224 SM(2, AR_PHY_AIC_MON_PD_TALLY_SCALING) |
225 SM(10, AR_PHY_AIC_MON_PERF_THR) |
226 SM(2, AR_PHY_AIC_CAL_TARGET_MAG_SETTING) |
227 SM(1, AR_PHY_AIC_CAL_PERF_CHECK_FACTOR) |
228 SM(1, AR_PHY_AIC_CAL_PWR_EST_LONG)));
229
230 REG_WRITE(ah, AR_PHY_AIC_CTRL_4_B0,
231 (SM(2, AR_PHY_AIC_CAL_ROT_ATT_DB_EST_ISO) |
232 SM(3, AR_PHY_AIC_CAL_COM_ATT_DB_EST_ISO) |
233 SM(0, AR_PHY_AIC_CAL_ISO_EST_INIT_SETTING) |
234 SM(2, AR_PHY_AIC_CAL_COM_ATT_DB_BACKOFF) |
235 SM(1, AR_PHY_AIC_CAL_COM_ATT_DB_FIXED)));
236
237 REG_WRITE(ah, AR_PHY_AIC_CTRL_4_B1,
238 (SM(2, AR_PHY_AIC_CAL_ROT_ATT_DB_EST_ISO) |
239 SM(3, AR_PHY_AIC_CAL_COM_ATT_DB_EST_ISO) |
240 SM(0, AR_PHY_AIC_CAL_ISO_EST_INIT_SETTING) |
241 SM(2, AR_PHY_AIC_CAL_COM_ATT_DB_BACKOFF) |
242 SM(1, AR_PHY_AIC_CAL_COM_ATT_DB_FIXED)));
243
244 ar9003_aic_gain_table(ah);
245
246 /* Need to enable AIC reference signal in BT modem. */
247 REG_WRITE(ah, ATH_AIC_BT_JUPITER_CTRL,
248 (REG_READ(ah, ATH_AIC_BT_JUPITER_CTRL) |
249 ATH_AIC_BT_AIC_ENABLE));
250
251 aic->aic_cal_start_time = REG_READ(ah, AR_TSF_L32);
252
253 /* Start calibration */
254 REG_CLR_BIT(ah, AR_PHY_AIC_CTRL_0_B1, AR_PHY_AIC_CAL_ENABLE);
255 REG_SET_BIT(ah, AR_PHY_AIC_CTRL_0_B1, AR_PHY_AIC_CAL_CH_VALID_RESET);
256 REG_SET_BIT(ah, AR_PHY_AIC_CTRL_0_B1, AR_PHY_AIC_CAL_ENABLE);
257
258 aic->aic_caled_chan = 0;
259 aic->aic_cal_state = AIC_CAL_STATE_STARTED;
260
261 return aic->aic_cal_state;
262 }
263
264 static bool ar9003_aic_cal_post_process(struct ath_hw *ah)
265 {
266 struct ath9k_hw_aic *aic = &ah->btcoex_hw.aic;
267 bool cal_sram_valid[ATH_AIC_MAX_BT_CHANNEL];
268 struct ath_aic_out_info aic_sram[ATH_AIC_MAX_BT_CHANNEL];
269 u32 dir_path_gain_idx, quad_path_gain_idx, value;
270 u32 fixed_com_att_db;
271 int8_t dir_path_sign, quad_path_sign;
272 int16_t i;
273 bool ret = true;
274
275 memset(&cal_sram_valid, 0, sizeof(cal_sram_valid));
276 memset(&aic_sram, 0, sizeof(aic_sram));
277
278 for (i = 0; i < ATH_AIC_MAX_BT_CHANNEL; i++) {
279 struct ath_aic_sram_info sram;
280 value = aic->aic_sram[i];
281
282 cal_sram_valid[i] = sram.valid =
283 MS(value, AR_PHY_AIC_SRAM_VALID);
284 sram.rot_quad_att_db =
285 MS(value, AR_PHY_AIC_SRAM_ROT_QUAD_ATT_DB);
286 sram.vga_quad_sign =
287 MS(value, AR_PHY_AIC_SRAM_VGA_QUAD_SIGN);
288 sram.rot_dir_att_db =
289 MS(value, AR_PHY_AIC_SRAM_ROT_DIR_ATT_DB);
290 sram.vga_dir_sign =
291 MS(value, AR_PHY_AIC_SRAM_VGA_DIR_SIGN);
292 sram.com_att_6db =
293 MS(value, AR_PHY_AIC_SRAM_COM_ATT_6DB);
294
295 if (sram.valid) {
296 dir_path_gain_idx = sram.rot_dir_att_db +
297 com_att_db_table[sram.com_att_6db];
298 quad_path_gain_idx = sram.rot_quad_att_db +
299 com_att_db_table[sram.com_att_6db];
300
301 dir_path_sign = (sram.vga_dir_sign) ? 1 : -1;
302 quad_path_sign = (sram.vga_quad_sign) ? 1 : -1;
303
304 aic_sram[i].dir_path_gain_lin = dir_path_sign *
305 aic_lin_table[dir_path_gain_idx];
306 aic_sram[i].quad_path_gain_lin = quad_path_sign *
307 aic_lin_table[quad_path_gain_idx];
308 }
309 }
310
311 for (i = 0; i < ATH_AIC_MAX_BT_CHANNEL; i++) {
312 int16_t start_idx, end_idx;
313
314 if (cal_sram_valid[i])
315 continue;
316
317 start_idx = ar9003_aic_find_valid(cal_sram_valid, 0, i);
318 end_idx = ar9003_aic_find_valid(cal_sram_valid, 1, i);
319
320 if (start_idx < 0) {
321 /* extrapolation */
322 start_idx = end_idx;
323 end_idx = ar9003_aic_find_valid(cal_sram_valid, 1, start_idx);
324
325 if (end_idx < 0) {
326 ret = false;
327 break;
328 }
329
330 aic_sram[i].dir_path_gain_lin =
331 ((aic_sram[start_idx].dir_path_gain_lin -
332 aic_sram[end_idx].dir_path_gain_lin) *
333 (start_idx - i) + ((end_idx - i) >> 1)) /
334 (end_idx - i) +
335 aic_sram[start_idx].dir_path_gain_lin;
336 aic_sram[i].quad_path_gain_lin =
337 ((aic_sram[start_idx].quad_path_gain_lin -
338 aic_sram[end_idx].quad_path_gain_lin) *
339 (start_idx - i) + ((end_idx - i) >> 1)) /
340 (end_idx - i) +
341 aic_sram[start_idx].quad_path_gain_lin;
342 }
343
344 if (end_idx < 0) {
345 /* extrapolation */
346 end_idx = ar9003_aic_find_valid(cal_sram_valid, 0, start_idx);
347
348 if (end_idx < 0) {
349 ret = false;
350 break;
351 }
352
353 aic_sram[i].dir_path_gain_lin =
354 ((aic_sram[start_idx].dir_path_gain_lin -
355 aic_sram[end_idx].dir_path_gain_lin) *
356 (i - start_idx) + ((start_idx - end_idx) >> 1)) /
357 (start_idx - end_idx) +
358 aic_sram[start_idx].dir_path_gain_lin;
359 aic_sram[i].quad_path_gain_lin =
360 ((aic_sram[start_idx].quad_path_gain_lin -
361 aic_sram[end_idx].quad_path_gain_lin) *
362 (i - start_idx) + ((start_idx - end_idx) >> 1)) /
363 (start_idx - end_idx) +
364 aic_sram[start_idx].quad_path_gain_lin;
365
366 } else if (start_idx >= 0){
367 /* interpolation */
368 aic_sram[i].dir_path_gain_lin =
369 (((end_idx - i) * aic_sram[start_idx].dir_path_gain_lin) +
370 ((i - start_idx) * aic_sram[end_idx].dir_path_gain_lin) +
371 ((end_idx - start_idx) >> 1)) /
372 (end_idx - start_idx);
373 aic_sram[i].quad_path_gain_lin =
374 (((end_idx - i) * aic_sram[start_idx].quad_path_gain_lin) +
375 ((i - start_idx) * aic_sram[end_idx].quad_path_gain_lin) +
376 ((end_idx - start_idx) >> 1))/
377 (end_idx - start_idx);
378 }
379 }
380
381 /* From dir/quad_path_gain_lin to sram. */
382 i = ar9003_aic_find_valid(cal_sram_valid, 1, 0);
383 if (i < 0) {
384 i = 0;
385 ret = false;
386 }
387 fixed_com_att_db = com_att_db_table[MS(aic->aic_sram[i],
388 AR_PHY_AIC_SRAM_COM_ATT_6DB)];
389
390 for (i = 0; i < ATH_AIC_MAX_BT_CHANNEL; i++) {
391 int16_t rot_dir_path_att_db, rot_quad_path_att_db;
392 struct ath_aic_sram_info sram;
393
394 sram.vga_dir_sign =
395 (aic_sram[i].dir_path_gain_lin >= 0) ? 1 : 0;
396 sram.vga_quad_sign =
397 (aic_sram[i].quad_path_gain_lin >= 0) ? 1 : 0;
398
399 rot_dir_path_att_db =
400 ar9003_aic_find_index(0, abs(aic_sram[i].dir_path_gain_lin)) -
401 fixed_com_att_db;
402 rot_quad_path_att_db =
403 ar9003_aic_find_index(0, abs(aic_sram[i].quad_path_gain_lin)) -
404 fixed_com_att_db;
405
406 sram.com_att_6db =
407 ar9003_aic_find_index(1, fixed_com_att_db);
408
409 sram.valid = true;
410
411 sram.rot_dir_att_db =
412 min(max(rot_dir_path_att_db,
413 (int16_t)ATH_AIC_MIN_ROT_DIR_ATT_DB),
414 ATH_AIC_MAX_ROT_DIR_ATT_DB);
415 sram.rot_quad_att_db =
416 min(max(rot_quad_path_att_db,
417 (int16_t)ATH_AIC_MIN_ROT_QUAD_ATT_DB),
418 ATH_AIC_MAX_ROT_QUAD_ATT_DB);
419
420 aic->aic_sram[i] = (SM(sram.vga_dir_sign,
421 AR_PHY_AIC_SRAM_VGA_DIR_SIGN) |
422 SM(sram.vga_quad_sign,
423 AR_PHY_AIC_SRAM_VGA_QUAD_SIGN) |
424 SM(sram.com_att_6db,
425 AR_PHY_AIC_SRAM_COM_ATT_6DB) |
426 SM(sram.valid,
427 AR_PHY_AIC_SRAM_VALID) |
428 SM(sram.rot_dir_att_db,
429 AR_PHY_AIC_SRAM_ROT_DIR_ATT_DB) |
430 SM(sram.rot_quad_att_db,
431 AR_PHY_AIC_SRAM_ROT_QUAD_ATT_DB));
432 }
433
434 return ret;
435 }
436
437 static void ar9003_aic_cal_done(struct ath_hw *ah)
438 {
439 struct ath9k_hw_aic *aic = &ah->btcoex_hw.aic;
440
441 /* Disable AIC reference signal in BT modem. */
442 REG_WRITE(ah, ATH_AIC_BT_JUPITER_CTRL,
443 (REG_READ(ah, ATH_AIC_BT_JUPITER_CTRL) &
444 ~ATH_AIC_BT_AIC_ENABLE));
445
446 if (ar9003_aic_cal_post_process(ah))
447 aic->aic_cal_state = AIC_CAL_STATE_DONE;
448 else
449 aic->aic_cal_state = AIC_CAL_STATE_ERROR;
450 }
451
452 static u8 ar9003_aic_cal_continue(struct ath_hw *ah, bool cal_once)
453 {
454 struct ath_common *common = ath9k_hw_common(ah);
455 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
456 struct ath9k_hw_aic *aic = &ah->btcoex_hw.aic;
457 int i, num_chan;
458
459 num_chan = MS(mci_hw->config, ATH_MCI_CONFIG_AIC_CAL_NUM_CHAN);
460
461 if (!num_chan) {
462 aic->aic_cal_state = AIC_CAL_STATE_ERROR;
463 return aic->aic_cal_state;
464 }
465
466 if (cal_once) {
467 for (i = 0; i < 10000; i++) {
468 if ((REG_READ(ah, AR_PHY_AIC_CTRL_0_B1) &
469 AR_PHY_AIC_CAL_ENABLE) == 0)
470 break;
471
472 udelay(100);
473 }
474 }
475
476 /*
477 * Use AR_PHY_AIC_CAL_ENABLE bit instead of AR_PHY_AIC_CAL_DONE.
478 * Sometimes CAL_DONE bit is not asserted.
479 */
480 if ((REG_READ(ah, AR_PHY_AIC_CTRL_0_B1) &
481 AR_PHY_AIC_CAL_ENABLE) != 0) {
482 ath_dbg(common, MCI, "AIC cal is not done after 40ms");
483 goto exit;
484 }
485
486 REG_WRITE(ah, AR_PHY_AIC_SRAM_ADDR_B1,
487 (ATH_AIC_SRAM_CAL_OFFSET | ATH_AIC_SRAM_AUTO_INCREMENT));
488
489 for (i = 0; i < ATH_AIC_MAX_BT_CHANNEL; i++) {
490 u32 value;
491
492 value = REG_READ(ah, AR_PHY_AIC_SRAM_DATA_B1);
493
494 if (value & 0x01) {
495 if (aic->aic_sram[i] == 0)
496 aic->aic_caled_chan++;
497
498 aic->aic_sram[i] = value;
499
500 if (!cal_once)
501 break;
502 }
503 }
504
505 if ((aic->aic_caled_chan >= num_chan) || cal_once) {
506 ar9003_aic_cal_done(ah);
507 } else {
508 /* Start calibration */
509 REG_CLR_BIT(ah, AR_PHY_AIC_CTRL_0_B1, AR_PHY_AIC_CAL_ENABLE);
510 REG_SET_BIT(ah, AR_PHY_AIC_CTRL_0_B1,
511 AR_PHY_AIC_CAL_CH_VALID_RESET);
512 REG_SET_BIT(ah, AR_PHY_AIC_CTRL_0_B1, AR_PHY_AIC_CAL_ENABLE);
513 }
514 exit:
515 return aic->aic_cal_state;
516
517 }
518
519 u8 ar9003_aic_calibration(struct ath_hw *ah)
520 {
521 struct ath9k_hw_aic *aic = &ah->btcoex_hw.aic;
522 u8 cal_ret = AIC_CAL_STATE_ERROR;
523
524 switch (aic->aic_cal_state) {
525 case AIC_CAL_STATE_IDLE:
526 cal_ret = ar9003_aic_cal_start(ah, 1);
527 break;
528 case AIC_CAL_STATE_STARTED:
529 cal_ret = ar9003_aic_cal_continue(ah, false);
530 break;
531 case AIC_CAL_STATE_DONE:
532 cal_ret = AIC_CAL_STATE_DONE;
533 break;
534 default:
535 break;
536 }
537
538 return cal_ret;
539 }
540
541 u8 ar9003_aic_start_normal(struct ath_hw *ah)
542 {
543 struct ath9k_hw_aic *aic = &ah->btcoex_hw.aic;
544 int16_t i;
545
546 if (aic->aic_cal_state != AIC_CAL_STATE_DONE)
547 return 1;
548
549 ar9003_aic_gain_table(ah);
550
551 REG_WRITE(ah, AR_PHY_AIC_SRAM_ADDR_B1, ATH_AIC_SRAM_AUTO_INCREMENT);
552
553 for (i = 0; i < ATH_AIC_MAX_BT_CHANNEL; i++) {
554 REG_WRITE(ah, AR_PHY_AIC_SRAM_DATA_B1, aic->aic_sram[i]);
555 }
556
557 /* FIXME: Replace these with proper register names */
558 REG_WRITE(ah, 0xa6b0, 0x80);
559 REG_WRITE(ah, 0xa6b4, 0x5b2df0);
560 REG_WRITE(ah, 0xa6b8, 0x10762cc8);
561 REG_WRITE(ah, 0xa6bc, 0x1219a4b);
562 REG_WRITE(ah, 0xa6c0, 0x1e01);
563 REG_WRITE(ah, 0xb6b4, 0xf0);
564 REG_WRITE(ah, 0xb6c0, 0x1e01);
565 REG_WRITE(ah, 0xb6b0, 0x81);
566 REG_WRITE(ah, AR_PHY_65NM_CH1_RXTX4, 0x40000000);
567
568 aic->aic_enabled = true;
569
570 return 0;
571 }
572
573 u8 ar9003_aic_cal_reset(struct ath_hw *ah)
574 {
575 struct ath9k_hw_aic *aic = &ah->btcoex_hw.aic;
576
577 aic->aic_cal_state = AIC_CAL_STATE_IDLE;
578 return aic->aic_cal_state;
579 }
580
581 u8 ar9003_aic_calibration_single(struct ath_hw *ah)
582 {
583 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
584 u8 cal_ret;
585 int num_chan;
586
587 num_chan = MS(mci_hw->config, ATH_MCI_CONFIG_AIC_CAL_NUM_CHAN);
588
589 (void) ar9003_aic_cal_start(ah, num_chan);
590 cal_ret = ar9003_aic_cal_continue(ah, true);
591
592 return cal_ret;
593 }
594
595 void ar9003_hw_attach_aic_ops(struct ath_hw *ah)
596 {
597 struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
598
599 priv_ops->is_aic_enabled = ar9003_hw_is_aic_enabled;
600 }
Linux with added FPC-III support