2 * (c) Copyright 2002-2010, Ralink Technology, Inc.
3 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
5 * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2
9 * as published by the Free Software Foundation
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
23 #include "initvals_phy.h"
24 #include "../mt76x02_phy.h"
26 #include <linux/etherdevice.h>
29 mt76x0_rf_csr_wr(struct mt76x0_dev *dev, u32 offset, u8 value)
34 if (test_bit(MT76_REMOVED, &dev->mt76.state))
37 bank = MT_RF_BANK(offset);
38 reg = MT_RF_REG(offset);
40 if (WARN_ON_ONCE(reg > 64) || WARN_ON_ONCE(bank) > 8)
43 mutex_lock(&dev->reg_atomic_mutex);
45 if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0, 100)) {
50 mt76_wr(dev, MT_RF_CSR_CFG,
51 FIELD_PREP(MT_RF_CSR_CFG_DATA, value) |
52 FIELD_PREP(MT_RF_CSR_CFG_REG_BANK, bank) |
53 FIELD_PREP(MT_RF_CSR_CFG_REG_ID, reg) |
56 trace_mt76x0_rf_write(&dev->mt76, bank, offset, value);
58 mutex_unlock(&dev->reg_atomic_mutex);
61 dev_err(dev->mt76.dev, "Error: RF write %d:%d failed:%d!!\n",
68 mt76x0_rf_csr_rr(struct mt76x0_dev *dev, u32 offset)
74 if (test_bit(MT76_REMOVED, &dev->mt76.state))
77 bank = MT_RF_BANK(offset);
78 reg = MT_RF_REG(offset);
80 if (WARN_ON_ONCE(reg > 64) || WARN_ON_ONCE(bank) > 8)
83 mutex_lock(&dev->reg_atomic_mutex);
85 if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0, 100))
88 mt76_wr(dev, MT_RF_CSR_CFG,
89 FIELD_PREP(MT_RF_CSR_CFG_REG_BANK, bank) |
90 FIELD_PREP(MT_RF_CSR_CFG_REG_ID, reg) |
93 if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0, 100))
96 val = mt76_rr(dev, MT_RF_CSR_CFG);
97 if (FIELD_GET(MT_RF_CSR_CFG_REG_ID, val) == reg &&
98 FIELD_GET(MT_RF_CSR_CFG_REG_BANK, val) == bank) {
99 ret = FIELD_GET(MT_RF_CSR_CFG_DATA, val);
100 trace_mt76x0_rf_read(&dev->mt76, bank, offset, ret);
103 mutex_unlock(&dev->reg_atomic_mutex);
106 dev_err(dev->mt76.dev, "Error: RF read %d:%d failed:%d!!\n",
113 rf_wr(struct mt76x0_dev *dev, u32 offset, u8 val)
115 if (test_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state)) {
116 struct mt76_reg_pair pair = {
121 return mt76_wr_rp(dev, MT_MCU_MEMMAP_RF, &pair, 1);
124 return mt76x0_rf_csr_wr(dev, offset, val);
129 rf_rr(struct mt76x0_dev *dev, u32 offset)
134 if (test_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state)) {
135 struct mt76_reg_pair pair = {
139 ret = mt76_rd_rp(dev, MT_MCU_MEMMAP_RF, &pair, 1);
143 ret = val = mt76x0_rf_csr_rr(dev, offset);
146 return (ret < 0) ? ret : val;
150 rf_rmw(struct mt76x0_dev *dev, u32 offset, u8 mask, u8 val)
154 ret = rf_rr(dev, offset);
158 ret = rf_wr(dev, offset, val);
166 rf_set(struct mt76x0_dev *dev, u32 offset, u8 val)
168 return rf_rmw(dev, offset, 0, val);
173 rf_clear(struct mt76x0_dev *dev, u32 offset, u8 mask)
175 return rf_rmw(dev, offset, mask, 0);
179 #define RF_RANDOM_WRITE(dev, tab) \
180 mt76_wr_rp(dev, MT_MCU_MEMMAP_RF, \
181 tab, ARRAY_SIZE(tab))
183 int mt76x0_wait_bbp_ready(struct mt76x0_dev *dev)
189 val = mt76_rr(dev, MT_BBP(CORE, 0));
190 printk("BBP version %08x\n", val);
196 dev_err(dev->mt76.dev, "Error: BBP is not ready\n");
204 mt76x0_bbp_set_ctrlch(struct mt76x0_dev *dev, enum nl80211_chan_width width,
207 int core_val, agc_val;
210 case NL80211_CHAN_WIDTH_80:
214 case NL80211_CHAN_WIDTH_40:
224 mt76_rmw_field(dev, MT_BBP(CORE, 1), MT_BBP_CORE_R1_BW, core_val);
225 mt76_rmw_field(dev, MT_BBP(AGC, 0), MT_BBP_AGC_R0_BW, agc_val);
226 mt76_rmw_field(dev, MT_BBP(AGC, 0), MT_BBP_AGC_R0_CTRL_CHAN, ctrl);
227 mt76_rmw_field(dev, MT_BBP(TXBE, 0), MT_BBP_TXBE_R0_CTRL_CHAN, ctrl);
230 int mt76x0_phy_get_rssi(struct mt76x0_dev *dev, struct mt76x02_rxwi *rxwi)
232 struct mt76x0_caldata *caldata = &dev->caldata;
234 return rxwi->rssi[0] + caldata->rssi_offset[0] - caldata->lna_gain;
237 static void mt76x0_vco_cal(struct mt76x0_dev *dev, u8 channel)
241 val = rf_rr(dev, MT_RF(0, 4));
242 if ((val & 0x70) != 0x30)
246 * Calibration Mode - Open loop, closed loop, and amplitude:
248 * B0.R06.[3:1] bp_close_code: 100
249 * B0.R05.[7:0] bp_open_code: 0x0
250 * B0.R04.[2:0] cal_bits: 000
251 * B0.R03.[2:0] startup_time: 011
252 * B0.R03.[6:4] settle_time:
257 val = rf_rr(dev, MT_RF(0, 6));
260 rf_wr(dev, MT_RF(0, 6), val);
262 val = rf_rr(dev, MT_RF(0, 5));
264 rf_wr(dev, MT_RF(0, 5), 0x0);
266 val = rf_rr(dev, MT_RF(0, 4));
268 rf_wr(dev, MT_RF(0, 4), val);
270 val = rf_rr(dev, MT_RF(0, 3));
272 if (channel == 1 || channel == 7 || channel == 9 || channel >= 13) {
274 } else if (channel == 3 || channel == 4 || channel == 10) {
276 } else if (channel == 2 || channel == 5 || channel == 6 ||
277 channel == 8 || channel == 11 || channel == 12) {
280 WARN(1, "Unknown channel %u\n", channel);
283 rf_wr(dev, MT_RF(0, 3), val);
285 /* TODO replace by mt76x0_rf_set(dev, MT_RF(0, 4), BIT(7)); */
286 val = rf_rr(dev, MT_RF(0, 4));
287 val = ((val & ~(0x80)) | 0x80);
288 rf_wr(dev, MT_RF(0, 4), val);
294 mt76x0_mac_set_ctrlch(struct mt76x0_dev *dev, bool primary_upper)
296 mt76_rmw_field(dev, MT_TX_BAND_CFG, MT_TX_BAND_CFG_UPPER_40M,
301 mt76x0_phy_set_band(struct mt76x0_dev *dev, enum nl80211_band band)
304 case NL80211_BAND_2GHZ:
305 RF_RANDOM_WRITE(dev, mt76x0_rf_2g_channel_0_tab);
307 rf_wr(dev, MT_RF(5, 0), 0x45);
308 rf_wr(dev, MT_RF(6, 0), 0x44);
310 mt76_set(dev, MT_TX_BAND_CFG, MT_TX_BAND_CFG_2G);
311 mt76_clear(dev, MT_TX_BAND_CFG, MT_TX_BAND_CFG_5G);
313 mt76_wr(dev, MT_TX_ALC_VGA3, 0x00050007);
314 mt76_wr(dev, MT_TX0_RF_GAIN_CORR, 0x003E0002);
316 case NL80211_BAND_5GHZ:
317 RF_RANDOM_WRITE(dev, mt76x0_rf_5g_channel_0_tab);
319 rf_wr(dev, MT_RF(5, 0), 0x44);
320 rf_wr(dev, MT_RF(6, 0), 0x45);
322 mt76_clear(dev, MT_TX_BAND_CFG, MT_TX_BAND_CFG_2G);
323 mt76_set(dev, MT_TX_BAND_CFG, MT_TX_BAND_CFG_5G);
325 mt76_wr(dev, MT_TX_ALC_VGA3, 0x00000005);
326 mt76_wr(dev, MT_TX0_RF_GAIN_CORR, 0x01010102);
334 mt76x0_phy_set_chan_rf_params(struct mt76x0_dev *dev, u8 channel, u16 rf_bw_band)
336 u16 rf_band = rf_bw_band & 0xff00;
337 u16 rf_bw = rf_bw_band & 0x00ff;
338 enum nl80211_band band;
343 const struct mt76x0_freq_item *freq_item;
345 for (i = 0; i < ARRAY_SIZE(mt76x0_sdm_channel); i++) {
346 if (channel == mt76x0_sdm_channel[i]) {
352 for (i = 0; i < ARRAY_SIZE(mt76x0_frequency_plan); i++) {
353 if (channel == mt76x0_frequency_plan[i].channel) {
354 rf_band = mt76x0_frequency_plan[i].band;
357 freq_item = &(mt76x0_sdm_frequency_plan[i]);
359 freq_item = &(mt76x0_frequency_plan[i]);
361 rf_wr(dev, MT_RF(0, 37), freq_item->pllR37);
362 rf_wr(dev, MT_RF(0, 36), freq_item->pllR36);
363 rf_wr(dev, MT_RF(0, 35), freq_item->pllR35);
364 rf_wr(dev, MT_RF(0, 34), freq_item->pllR34);
365 rf_wr(dev, MT_RF(0, 33), freq_item->pllR33);
367 rf_val = rf_rr(dev, MT_RF(0, 32));
369 rf_val |= freq_item->pllR32_b7b5;
370 rf_wr(dev, MT_RF(0, 32), rf_val);
372 /* R32<4:0> pll_den: (Denomina - 8) */
373 rf_val = rf_rr(dev, MT_RF(0, 32));
375 rf_val |= freq_item->pllR32_b4b0;
376 rf_wr(dev, MT_RF(0, 32), rf_val);
379 rf_val = rf_rr(dev, MT_RF(0, 31));
381 rf_val |= freq_item->pllR31_b7b5;
382 rf_wr(dev, MT_RF(0, 31), rf_val);
384 /* R31<4:0> pll_k(Nominator) */
385 rf_val = rf_rr(dev, MT_RF(0, 31));
387 rf_val |= freq_item->pllR31_b4b0;
388 rf_wr(dev, MT_RF(0, 31), rf_val);
390 /* R30<7> sdm_reset_n */
391 rf_val = rf_rr(dev, MT_RF(0, 30));
394 rf_wr(dev, MT_RF(0, 30), rf_val);
396 rf_wr(dev, MT_RF(0, 30), rf_val);
398 rf_val |= freq_item->pllR30_b7;
399 rf_wr(dev, MT_RF(0, 30), rf_val);
402 /* R30<6:2> sdmmash_prbs,sin */
403 rf_val = rf_rr(dev, MT_RF(0, 30));
405 rf_val |= freq_item->pllR30_b6b2;
406 rf_wr(dev, MT_RF(0, 30), rf_val);
409 rf_val = rf_rr(dev, MT_RF(0, 30));
411 rf_val |= (freq_item->pllR30_b1 << 1);
412 rf_wr(dev, MT_RF(0, 30), rf_val);
414 /* R30<0> R29<7:0> (hex) pll_n */
415 rf_val = freq_item->pll_n & 0x00FF;
416 rf_wr(dev, MT_RF(0, 29), rf_val);
418 rf_val = rf_rr(dev, MT_RF(0, 30));
420 rf_val |= ((freq_item->pll_n >> 8) & 0x0001);
421 rf_wr(dev, MT_RF(0, 30), rf_val);
423 /* R28<7:6> isi_iso */
424 rf_val = rf_rr(dev, MT_RF(0, 28));
426 rf_val |= freq_item->pllR28_b7b6;
427 rf_wr(dev, MT_RF(0, 28), rf_val);
429 /* R28<5:4> pfd_dly */
430 rf_val = rf_rr(dev, MT_RF(0, 28));
432 rf_val |= freq_item->pllR28_b5b4;
433 rf_wr(dev, MT_RF(0, 28), rf_val);
435 /* R28<3:2> clksel option */
436 rf_val = rf_rr(dev, MT_RF(0, 28));
438 rf_val |= freq_item->pllR28_b3b2;
439 rf_wr(dev, MT_RF(0, 28), rf_val);
441 /* R28<1:0> R27<7:0> R26<7:0> (hex) sdm_k */
442 rf_val = freq_item->pll_sdm_k & 0x000000FF;
443 rf_wr(dev, MT_RF(0, 26), rf_val);
445 rf_val = ((freq_item->pll_sdm_k >> 8) & 0x000000FF);
446 rf_wr(dev, MT_RF(0, 27), rf_val);
448 rf_val = rf_rr(dev, MT_RF(0, 28));
450 rf_val |= ((freq_item->pll_sdm_k >> 16) & 0x0003);
451 rf_wr(dev, MT_RF(0, 28), rf_val);
453 /* R24<1:0> xo_div */
454 rf_val = rf_rr(dev, MT_RF(0, 24));
456 rf_val |= freq_item->pllR24_b1b0;
457 rf_wr(dev, MT_RF(0, 24), rf_val);
463 for (i = 0; i < ARRAY_SIZE(mt76x0_rf_bw_switch_tab); i++) {
464 if (rf_bw == mt76x0_rf_bw_switch_tab[i].bw_band) {
465 rf_wr(dev, mt76x0_rf_bw_switch_tab[i].rf_bank_reg,
466 mt76x0_rf_bw_switch_tab[i].value);
467 } else if ((rf_bw == (mt76x0_rf_bw_switch_tab[i].bw_band & 0xFF)) &&
468 (rf_band & mt76x0_rf_bw_switch_tab[i].bw_band)) {
469 rf_wr(dev, mt76x0_rf_bw_switch_tab[i].rf_bank_reg,
470 mt76x0_rf_bw_switch_tab[i].value);
474 for (i = 0; i < ARRAY_SIZE(mt76x0_rf_band_switch_tab); i++) {
475 if (mt76x0_rf_band_switch_tab[i].bw_band & rf_band) {
476 rf_wr(dev, mt76x0_rf_band_switch_tab[i].rf_bank_reg,
477 mt76x0_rf_band_switch_tab[i].value);
481 mac_reg = mt76_rr(dev, MT_RF_MISC);
482 mac_reg &= ~0xC; /* Clear 0x518[3:2] */
483 mt76_wr(dev, MT_RF_MISC, mac_reg);
485 band = (rf_band & RF_G_BAND) ? NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
486 if (mt76x02_ext_pa_enabled(&dev->mt76, band)) {
488 MT_RF_MISC (offset: 0x0518)
489 [2]1'b1: enable external A band PA, 1'b0: disable external A band PA
490 [3]1'b1: enable external G band PA, 1'b0: disable external G band PA
492 if (rf_band & RF_A_BAND) {
493 mac_reg = mt76_rr(dev, MT_RF_MISC);
495 mt76_wr(dev, MT_RF_MISC, mac_reg);
497 mac_reg = mt76_rr(dev, MT_RF_MISC);
499 mt76_wr(dev, MT_RF_MISC, mac_reg);
503 for (i = 0; i < ARRAY_SIZE(mt76x0_rf_ext_pa_tab); i++)
504 if (mt76x0_rf_ext_pa_tab[i].bw_band & rf_band)
505 rf_wr(dev, mt76x0_rf_ext_pa_tab[i].rf_bank_reg,
506 mt76x0_rf_ext_pa_tab[i].value);
509 if (rf_band & RF_G_BAND) {
510 mt76_wr(dev, MT_TX0_RF_GAIN_ATTEN, 0x63707400);
511 /* Set Atten mode = 2 For G band, Disable Tx Inc dcoc. */
512 mac_reg = mt76_rr(dev, MT_TX_ALC_CFG_1);
513 mac_reg &= 0x896400FF;
514 mt76_wr(dev, MT_TX_ALC_CFG_1, mac_reg);
516 mt76_wr(dev, MT_TX0_RF_GAIN_ATTEN, 0x686A7800);
517 /* Set Atten mode = 0 For Ext A band, Disable Tx Inc dcoc Cal. */
518 mac_reg = mt76_rr(dev, MT_TX_ALC_CFG_1);
519 mac_reg &= 0x890400FF;
520 mt76_wr(dev, MT_TX_ALC_CFG_1, mac_reg);
525 mt76x0_phy_set_chan_bbp_params(struct mt76x0_dev *dev, u8 channel, u16 rf_bw_band)
529 for (i = 0; i < ARRAY_SIZE(mt76x0_bbp_switch_tab); i++) {
530 const struct mt76x0_bbp_switch_item *item = &mt76x0_bbp_switch_tab[i];
531 const struct mt76_reg_pair *pair = &item->reg_pair;
533 if ((rf_bw_band & item->bw_band) != rf_bw_band)
536 if (pair->reg == MT_BBP(AGC, 8)) {
537 u32 val = pair->value;
540 gain = FIELD_GET(MT_BBP_AGC_GAIN, val);
541 gain -= dev->caldata.lna_gain * 2;
542 val &= ~MT_BBP_AGC_GAIN;
543 val |= FIELD_PREP(MT_BBP_AGC_GAIN, gain);
544 mt76_wr(dev, pair->reg, val);
546 mt76_wr(dev, pair->reg, pair->value);
551 static void mt76x0_ant_select(struct mt76x0_dev *dev)
553 struct ieee80211_channel *chan = dev->mt76.chandef.chan;
555 /* single antenna mode */
556 if (chan->band == NL80211_BAND_2GHZ) {
557 mt76_rmw(dev, MT_COEXCFG3,
558 BIT(5) | BIT(4) | BIT(3) | BIT(2), BIT(1));
559 mt76_rmw(dev, MT_WLAN_FUN_CTRL, BIT(5), BIT(6));
561 mt76_rmw(dev, MT_COEXCFG3, BIT(5) | BIT(2),
563 mt76_clear(dev, MT_WLAN_FUN_CTRL,
566 mt76_clear(dev, MT_CMB_CTRL, BIT(14) | BIT(12));
567 mt76_clear(dev, MT_COEXCFG0, BIT(2));
571 mt76x0_bbp_set_bw(struct mt76x0_dev *dev, enum nl80211_chan_width width)
573 enum { BW_20 = 0, BW_40 = 1, BW_80 = 2, BW_10 = 4};
578 case NL80211_CHAN_WIDTH_20_NOHT:
579 case NL80211_CHAN_WIDTH_20:
582 case NL80211_CHAN_WIDTH_40:
585 case NL80211_CHAN_WIDTH_80:
588 case NL80211_CHAN_WIDTH_10:
591 case NL80211_CHAN_WIDTH_80P80:
592 case NL80211_CHAN_WIDTH_160:
593 case NL80211_CHAN_WIDTH_5:
598 mt76x02_mcu_function_select(&dev->mt76, BW_SETTING, bw, false);
601 void mt76x0_phy_set_txpower(struct mt76x0_dev *dev)
603 struct mt76_rate_power *t = &dev->mt76.rate_power;
606 mt76x0_get_power_info(dev, info);
607 mt76x0_get_tx_power_per_rate(dev);
609 mt76x02_add_rate_power_offset(t, info[0]);
610 mt76x02_limit_rate_power(t, dev->mt76.txpower_conf);
611 dev->mt76.txpower_cur = mt76x02_get_max_rate_power(t);
612 mt76x02_add_rate_power_offset(t, -info[0]);
614 mt76x02_phy_set_txpower(&dev->mt76, info[0], info[1]);
618 __mt76x0_phy_set_channel(struct mt76x0_dev *dev,
619 struct cfg80211_chan_def *chandef)
621 u32 ext_cca_chan[4] = {
622 [0] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 0) |
623 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 1) |
624 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 2) |
625 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 3) |
626 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(0)),
627 [1] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 1) |
628 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 0) |
629 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 2) |
630 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 3) |
631 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(1)),
632 [2] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 2) |
633 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 3) |
634 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 1) |
635 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 0) |
636 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(2)),
637 [3] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 3) |
638 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 2) |
639 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 1) |
640 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 0) |
641 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(3)),
643 bool scan = test_bit(MT76_SCANNING, &dev->mt76.state);
644 int ch_group_index, freq, freq1;
649 freq = chandef->chan->center_freq;
650 freq1 = chandef->center_freq1;
651 channel = chandef->chan->hw_value;
652 rf_bw_band = (channel <= 14) ? RF_G_BAND : RF_A_BAND;
653 dev->mt76.chandef = *chandef;
655 switch (chandef->width) {
656 case NL80211_CHAN_WIDTH_40:
661 channel += 2 - ch_group_index * 4;
662 rf_bw_band |= RF_BW_40;
664 case NL80211_CHAN_WIDTH_80:
665 ch_group_index = (freq - freq1 + 30) / 20;
666 if (WARN_ON(ch_group_index < 0 || ch_group_index > 3))
668 channel += 6 - ch_group_index * 4;
669 rf_bw_band |= RF_BW_80;
673 rf_bw_band |= RF_BW_20;
677 mt76x0_bbp_set_bw(dev, chandef->width);
678 mt76x0_bbp_set_ctrlch(dev, chandef->width, ch_group_index);
679 mt76x0_mac_set_ctrlch(dev, ch_group_index & 1);
680 mt76x0_ant_select(dev);
682 mt76_rmw(dev, MT_EXT_CCA_CFG,
683 (MT_EXT_CCA_CFG_CCA0 |
684 MT_EXT_CCA_CFG_CCA1 |
685 MT_EXT_CCA_CFG_CCA2 |
686 MT_EXT_CCA_CFG_CCA3 |
687 MT_EXT_CCA_CFG_CCA_MASK),
688 ext_cca_chan[ch_group_index]);
690 mt76x0_phy_set_band(dev, chandef->chan->band);
691 mt76x0_phy_set_chan_rf_params(dev, channel, rf_bw_band);
692 mt76x0_read_rx_gain(dev);
694 /* set Japan Tx filter at channel 14 */
695 val = mt76_rr(dev, MT_BBP(CORE, 1));
700 mt76_wr(dev, MT_BBP(CORE, 1), val);
702 mt76x0_phy_set_chan_bbp_params(dev, channel, rf_bw_band);
704 /* Vendor driver don't do it */
705 /* mt76x0_phy_set_tx_power(dev, channel, rf_bw_band); */
707 mt76x0_vco_cal(dev, channel);
709 mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_RXDCOC, 1, false);
711 mt76x0_phy_set_txpower(dev);
716 int mt76x0_phy_set_channel(struct mt76x0_dev *dev,
717 struct cfg80211_chan_def *chandef)
721 mutex_lock(&dev->hw_atomic_mutex);
722 ret = __mt76x0_phy_set_channel(dev, chandef);
723 mutex_unlock(&dev->hw_atomic_mutex);
728 void mt76x0_phy_recalibrate_after_assoc(struct mt76x0_dev *dev)
731 u8 channel = dev->mt76.chandef.chan->hw_value;
732 int is_5ghz = (dev->mt76.chandef.chan->band == NL80211_BAND_5GHZ) ? 1 : 0;
734 mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_R, 0, false);
736 mt76x0_vco_cal(dev, channel);
738 tx_alc = mt76_rr(dev, MT_TX_ALC_CFG_0);
739 mt76_wr(dev, MT_TX_ALC_CFG_0, 0);
740 usleep_range(500, 700);
742 reg_val = mt76_rr(dev, 0x2124);
743 reg_val &= 0xffffff7e;
744 mt76_wr(dev, 0x2124, reg_val);
746 mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_RXDCOC, 0, false);
748 mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_LC, is_5ghz, false);
749 mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_LOFT, is_5ghz, false);
750 mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_TXIQ, is_5ghz, false);
751 mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_TX_GROUP_DELAY,
753 mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_RXIQ, is_5ghz, false);
754 mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_RX_GROUP_DELAY,
757 mt76_wr(dev, 0x2124, reg_val);
758 mt76_wr(dev, MT_TX_ALC_CFG_0, tx_alc);
761 mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_RXDCOC, 1, false);
764 void mt76x0_agc_save(struct mt76x0_dev *dev)
766 /* Only one RX path */
767 dev->agc_save = FIELD_GET(MT_BBP_AGC_GAIN, mt76_rr(dev, MT_BBP(AGC, 8)));
770 void mt76x0_agc_restore(struct mt76x0_dev *dev)
772 mt76_rmw_field(dev, MT_BBP(AGC, 8), MT_BBP_AGC_GAIN, dev->agc_save);
775 static void mt76x0_temp_sensor(struct mt76x0_dev *dev)
777 u8 rf_b7_73, rf_b0_66, rf_b0_67;
782 rf_b7_73 = rf_rr(dev, MT_RF(7, 73));
783 rf_b0_66 = rf_rr(dev, MT_RF(0, 66));
784 rf_b0_67 = rf_rr(dev, MT_RF(0, 73));
786 rf_wr(dev, MT_RF(7, 73), 0x02);
787 rf_wr(dev, MT_RF(0, 66), 0x23);
788 rf_wr(dev, MT_RF(0, 73), 0x01);
790 mt76_wr(dev, MT_BBP(CORE, 34), 0x00080055);
792 for (cycle = 0; cycle < 2000; cycle++) {
793 val = mt76_rr(dev, MT_BBP(CORE, 34));
801 mt76_wr(dev, MT_BBP(CORE, 34), val);
805 sval = mt76_rr(dev, MT_BBP(CORE, 35)) & 0xff;
807 sval &= 0x7f; /* Positive */
809 sval |= 0xffffff00; /* Negative */
811 temp = (35 * (sval - dev->caldata.temp_offset)) / 10 + 25;
814 rf_wr(dev, MT_RF(7, 73), rf_b7_73);
815 rf_wr(dev, MT_RF(0, 66), rf_b0_66);
816 rf_wr(dev, MT_RF(0, 73), rf_b0_67);
819 static void mt76x0_dynamic_vga_tuning(struct mt76x0_dev *dev)
821 struct cfg80211_chan_def *chandef = &dev->mt76.chandef;
825 init_vga = chandef->chan->band == NL80211_BAND_5GHZ ? 0x54 : 0x4E;
826 avg_rssi = mt76x02_phy_get_min_avg_rssi(&dev->mt76);
829 else if (avg_rssi > -70)
832 val = mt76_rr(dev, MT_BBP(AGC, 8));
834 val |= init_vga << 8;
835 mt76_wr(dev, MT_BBP(AGC,8), val);
838 static void mt76x0_phy_calibrate(struct work_struct *work)
840 struct mt76x0_dev *dev = container_of(work, struct mt76x0_dev,
843 mt76x0_dynamic_vga_tuning(dev);
844 mt76x0_temp_sensor(dev);
846 ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
847 MT_CALIBRATE_INTERVAL);
851 mt76x0_rf_init(struct mt76x0_dev *dev)
856 RF_RANDOM_WRITE(dev, mt76x0_rf_central_tab);
857 RF_RANDOM_WRITE(dev, mt76x0_rf_2g_channel_0_tab);
858 RF_RANDOM_WRITE(dev, mt76x0_rf_5g_channel_0_tab);
859 RF_RANDOM_WRITE(dev, mt76x0_rf_vga_channel_0_tab);
861 for (i = 0; i < ARRAY_SIZE(mt76x0_rf_bw_switch_tab); i++) {
862 const struct mt76x0_rf_switch_item *item = &mt76x0_rf_bw_switch_tab[i];
864 if (item->bw_band == RF_BW_20)
865 rf_wr(dev, item->rf_bank_reg, item->value);
866 else if (((RF_G_BAND | RF_BW_20) & item->bw_band) == (RF_G_BAND | RF_BW_20))
867 rf_wr(dev, item->rf_bank_reg, item->value);
870 for (i = 0; i < ARRAY_SIZE(mt76x0_rf_band_switch_tab); i++) {
871 if (mt76x0_rf_band_switch_tab[i].bw_band & RF_G_BAND) {
873 mt76x0_rf_band_switch_tab[i].rf_bank_reg,
874 mt76x0_rf_band_switch_tab[i].value);
879 Frequency calibration
880 E1: B0.R22<6:0>: xo_cxo<6:0>
881 E2: B0.R21<0>: xo_cxo<0>, B0.R22<7:0>: xo_cxo<8:1>
883 rf_wr(dev, MT_RF(0, 22),
884 min_t(u8, dev->caldata.freq_offset, 0xbf));
885 val = rf_rr(dev, MT_RF(0, 22));
888 Reset the DAC (Set B0.R73<7>=1, then set B0.R73<7>=0, and then set B0.R73<7>) during power up.
890 val = rf_rr(dev, MT_RF(0, 73));
892 rf_wr(dev, MT_RF(0, 73), val);
894 rf_wr(dev, MT_RF(0, 73), val);
896 rf_wr(dev, MT_RF(0, 73), val);
899 vcocal_en (initiate VCO calibration (reset after completion)) - It should be at the end of RF configuration.
901 rf_set(dev, MT_RF(0, 4), 0x80);
904 void mt76x0_phy_init(struct mt76x0_dev *dev)
906 INIT_DELAYED_WORK(&dev->cal_work, mt76x0_phy_calibrate);
909 mt76x02_phy_set_rxpath(&dev->mt76);
910 mt76x02_phy_set_txdac(&dev->mt76);