1 // SPDX-License-Identifier: GPL-2.0-only
3 * (c) Copyright 2002-2010, Ralink Technology, Inc.
4 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
5 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
6 * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
9 #include <linux/kernel.h>
10 #include <linux/etherdevice.h>
17 #include "initvals_phy.h"
18 #include "../mt76x02_phy.h"
21 mt76x0_rf_csr_wr(struct mt76x02_dev *dev, u32 offset, u8 value)
26 if (test_bit(MT76_REMOVED, &dev->mt76.state))
29 bank = MT_RF_BANK(offset);
30 reg = MT_RF_REG(offset);
32 if (WARN_ON_ONCE(reg > 127) || WARN_ON_ONCE(bank > 8))
35 mutex_lock(&dev->phy_mutex);
37 if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0, 100)) {
42 mt76_wr(dev, MT_RF_CSR_CFG,
43 FIELD_PREP(MT_RF_CSR_CFG_DATA, value) |
44 FIELD_PREP(MT_RF_CSR_CFG_REG_BANK, bank) |
45 FIELD_PREP(MT_RF_CSR_CFG_REG_ID, reg) |
50 mutex_unlock(&dev->phy_mutex);
53 dev_err(dev->mt76.dev, "Error: RF write %d:%d failed:%d!!\n",
59 static int mt76x0_rf_csr_rr(struct mt76x02_dev *dev, u32 offset)
65 if (test_bit(MT76_REMOVED, &dev->mt76.state))
68 bank = MT_RF_BANK(offset);
69 reg = MT_RF_REG(offset);
71 if (WARN_ON_ONCE(reg > 127) || WARN_ON_ONCE(bank > 8))
74 mutex_lock(&dev->phy_mutex);
76 if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0, 100))
79 mt76_wr(dev, MT_RF_CSR_CFG,
80 FIELD_PREP(MT_RF_CSR_CFG_REG_BANK, bank) |
81 FIELD_PREP(MT_RF_CSR_CFG_REG_ID, reg) |
84 if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0, 100))
87 val = mt76_rr(dev, MT_RF_CSR_CFG);
88 if (FIELD_GET(MT_RF_CSR_CFG_REG_ID, val) == reg &&
89 FIELD_GET(MT_RF_CSR_CFG_REG_BANK, val) == bank)
90 ret = FIELD_GET(MT_RF_CSR_CFG_DATA, val);
93 mutex_unlock(&dev->phy_mutex);
96 dev_err(dev->mt76.dev, "Error: RF read %d:%d failed:%d!!\n",
103 mt76x0_rf_wr(struct mt76x02_dev *dev, u32 offset, u8 val)
105 if (mt76_is_usb(dev)) {
106 struct mt76_reg_pair pair = {
111 WARN_ON_ONCE(!test_bit(MT76_STATE_MCU_RUNNING,
113 return mt76_wr_rp(dev, MT_MCU_MEMMAP_RF, &pair, 1);
115 return mt76x0_rf_csr_wr(dev, offset, val);
119 static int mt76x0_rf_rr(struct mt76x02_dev *dev, u32 offset)
124 if (mt76_is_usb(dev)) {
125 struct mt76_reg_pair pair = {
129 WARN_ON_ONCE(!test_bit(MT76_STATE_MCU_RUNNING,
131 ret = mt76_rd_rp(dev, MT_MCU_MEMMAP_RF, &pair, 1);
134 ret = val = mt76x0_rf_csr_rr(dev, offset);
137 return (ret < 0) ? ret : val;
141 mt76x0_rf_rmw(struct mt76x02_dev *dev, u32 offset, u8 mask, u8 val)
145 ret = mt76x0_rf_rr(dev, offset);
151 ret = mt76x0_rf_wr(dev, offset, val);
152 return ret ? ret : val;
156 mt76x0_rf_set(struct mt76x02_dev *dev, u32 offset, u8 val)
158 return mt76x0_rf_rmw(dev, offset, 0, val);
162 mt76x0_rf_clear(struct mt76x02_dev *dev, u32 offset, u8 mask)
164 return mt76x0_rf_rmw(dev, offset, mask, 0);
168 mt76x0_phy_rf_csr_wr_rp(struct mt76x02_dev *dev,
169 const struct mt76_reg_pair *data,
173 mt76x0_rf_csr_wr(dev, data->reg, data->value);
178 #define RF_RANDOM_WRITE(dev, tab) do { \
179 if (mt76_is_mmio(dev)) \
180 mt76x0_phy_rf_csr_wr_rp(dev, tab, ARRAY_SIZE(tab)); \
182 mt76_wr_rp(dev, MT_MCU_MEMMAP_RF, tab, ARRAY_SIZE(tab));\
185 int mt76x0_phy_wait_bbp_ready(struct mt76x02_dev *dev)
191 val = mt76_rr(dev, MT_BBP(CORE, 0));
197 dev_err(dev->mt76.dev, "Error: BBP is not ready\n");
201 dev_dbg(dev->mt76.dev, "BBP version %08x\n", val);
206 mt76x0_phy_set_band(struct mt76x02_dev *dev, enum nl80211_band band)
209 case NL80211_BAND_2GHZ:
210 RF_RANDOM_WRITE(dev, mt76x0_rf_2g_channel_0_tab);
212 mt76x0_rf_wr(dev, MT_RF(5, 0), 0x45);
213 mt76x0_rf_wr(dev, MT_RF(6, 0), 0x44);
215 mt76_wr(dev, MT_TX_ALC_VGA3, 0x00050007);
216 mt76_wr(dev, MT_TX0_RF_GAIN_CORR, 0x003E0002);
218 case NL80211_BAND_5GHZ:
219 RF_RANDOM_WRITE(dev, mt76x0_rf_5g_channel_0_tab);
221 mt76x0_rf_wr(dev, MT_RF(5, 0), 0x44);
222 mt76x0_rf_wr(dev, MT_RF(6, 0), 0x45);
224 mt76_wr(dev, MT_TX_ALC_VGA3, 0x00000005);
225 mt76_wr(dev, MT_TX0_RF_GAIN_CORR, 0x01010102);
233 mt76x0_phy_set_chan_rf_params(struct mt76x02_dev *dev, u8 channel, u16 rf_bw_band)
235 const struct mt76x0_freq_item *freq_item;
236 u16 rf_band = rf_bw_band & 0xff00;
237 u16 rf_bw = rf_bw_band & 0x00ff;
238 enum nl80211_band band;
243 for (i = 0; i < ARRAY_SIZE(mt76x0_sdm_channel); i++) {
244 if (channel == mt76x0_sdm_channel[i]) {
250 for (i = 0; i < ARRAY_SIZE(mt76x0_frequency_plan); i++) {
251 if (channel == mt76x0_frequency_plan[i].channel) {
252 rf_band = mt76x0_frequency_plan[i].band;
255 freq_item = &(mt76x0_sdm_frequency_plan[i]);
257 freq_item = &(mt76x0_frequency_plan[i]);
259 mt76x0_rf_wr(dev, MT_RF(0, 37), freq_item->pllR37);
260 mt76x0_rf_wr(dev, MT_RF(0, 36), freq_item->pllR36);
261 mt76x0_rf_wr(dev, MT_RF(0, 35), freq_item->pllR35);
262 mt76x0_rf_wr(dev, MT_RF(0, 34), freq_item->pllR34);
263 mt76x0_rf_wr(dev, MT_RF(0, 33), freq_item->pllR33);
265 mt76x0_rf_rmw(dev, MT_RF(0, 32), 0xe0,
266 freq_item->pllR32_b7b5);
268 /* R32<4:0> pll_den: (Denomina - 8) */
269 mt76x0_rf_rmw(dev, MT_RF(0, 32), MT_RF_PLL_DEN_MASK,
270 freq_item->pllR32_b4b0);
273 mt76x0_rf_rmw(dev, MT_RF(0, 31), 0xe0,
274 freq_item->pllR31_b7b5);
276 /* R31<4:0> pll_k(Nominator) */
277 mt76x0_rf_rmw(dev, MT_RF(0, 31), MT_RF_PLL_K_MASK,
278 freq_item->pllR31_b4b0);
280 /* R30<7> sdm_reset_n */
282 mt76x0_rf_clear(dev, MT_RF(0, 30),
283 MT_RF_SDM_RESET_MASK);
284 mt76x0_rf_set(dev, MT_RF(0, 30),
285 MT_RF_SDM_RESET_MASK);
287 mt76x0_rf_rmw(dev, MT_RF(0, 30),
288 MT_RF_SDM_RESET_MASK,
289 freq_item->pllR30_b7);
292 /* R30<6:2> sdmmash_prbs,sin */
293 mt76x0_rf_rmw(dev, MT_RF(0, 30),
294 MT_RF_SDM_MASH_PRBS_MASK,
295 freq_item->pllR30_b6b2);
298 mt76x0_rf_rmw(dev, MT_RF(0, 30), MT_RF_SDM_BP_MASK,
299 freq_item->pllR30_b1 << 1);
301 /* R30<0> R29<7:0> (hex) pll_n */
302 mt76x0_rf_wr(dev, MT_RF(0, 29),
303 freq_item->pll_n & 0xff);
305 mt76x0_rf_rmw(dev, MT_RF(0, 30), 0x1,
306 (freq_item->pll_n >> 8) & 0x1);
308 /* R28<7:6> isi_iso */
309 mt76x0_rf_rmw(dev, MT_RF(0, 28), MT_RF_ISI_ISO_MASK,
310 freq_item->pllR28_b7b6);
312 /* R28<5:4> pfd_dly */
313 mt76x0_rf_rmw(dev, MT_RF(0, 28), MT_RF_PFD_DLY_MASK,
314 freq_item->pllR28_b5b4);
316 /* R28<3:2> clksel option */
317 mt76x0_rf_rmw(dev, MT_RF(0, 28), MT_RF_CLK_SEL_MASK,
318 freq_item->pllR28_b3b2);
320 /* R28<1:0> R27<7:0> R26<7:0> (hex) sdm_k */
321 mt76x0_rf_wr(dev, MT_RF(0, 26),
322 freq_item->pll_sdm_k & 0xff);
323 mt76x0_rf_wr(dev, MT_RF(0, 27),
324 (freq_item->pll_sdm_k >> 8) & 0xff);
326 mt76x0_rf_rmw(dev, MT_RF(0, 28), 0x3,
327 (freq_item->pll_sdm_k >> 16) & 0x3);
329 /* R24<1:0> xo_div */
330 mt76x0_rf_rmw(dev, MT_RF(0, 24), MT_RF_XO_DIV_MASK,
331 freq_item->pllR24_b1b0);
337 for (i = 0; i < ARRAY_SIZE(mt76x0_rf_bw_switch_tab); i++) {
338 if (rf_bw == mt76x0_rf_bw_switch_tab[i].bw_band) {
340 mt76x0_rf_bw_switch_tab[i].rf_bank_reg,
341 mt76x0_rf_bw_switch_tab[i].value);
342 } else if ((rf_bw == (mt76x0_rf_bw_switch_tab[i].bw_band & 0xFF)) &&
343 (rf_band & mt76x0_rf_bw_switch_tab[i].bw_band)) {
345 mt76x0_rf_bw_switch_tab[i].rf_bank_reg,
346 mt76x0_rf_bw_switch_tab[i].value);
350 for (i = 0; i < ARRAY_SIZE(mt76x0_rf_band_switch_tab); i++) {
351 if (mt76x0_rf_band_switch_tab[i].bw_band & rf_band) {
353 mt76x0_rf_band_switch_tab[i].rf_bank_reg,
354 mt76x0_rf_band_switch_tab[i].value);
358 mt76_clear(dev, MT_RF_MISC, 0xc);
360 band = (rf_band & RF_G_BAND) ? NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
361 if (mt76x02_ext_pa_enabled(dev, band)) {
363 MT_RF_MISC (offset: 0x0518)
364 [2]1'b1: enable external A band PA, 1'b0: disable external A band PA
365 [3]1'b1: enable external G band PA, 1'b0: disable external G band PA
367 if (rf_band & RF_A_BAND)
368 mt76_set(dev, MT_RF_MISC, BIT(2));
370 mt76_set(dev, MT_RF_MISC, BIT(3));
373 for (i = 0; i < ARRAY_SIZE(mt76x0_rf_ext_pa_tab); i++)
374 if (mt76x0_rf_ext_pa_tab[i].bw_band & rf_band)
376 mt76x0_rf_ext_pa_tab[i].rf_bank_reg,
377 mt76x0_rf_ext_pa_tab[i].value);
380 if (rf_band & RF_G_BAND) {
381 mt76_wr(dev, MT_TX0_RF_GAIN_ATTEN, 0x63707400);
382 /* Set Atten mode = 2 For G band, Disable Tx Inc dcoc. */
383 mac_reg = mt76_rr(dev, MT_TX_ALC_CFG_1);
384 mac_reg &= 0x896400FF;
385 mt76_wr(dev, MT_TX_ALC_CFG_1, mac_reg);
387 mt76_wr(dev, MT_TX0_RF_GAIN_ATTEN, 0x686A7800);
388 /* Set Atten mode = 0 For Ext A band, Disable Tx Inc dcoc Cal. */
389 mac_reg = mt76_rr(dev, MT_TX_ALC_CFG_1);
390 mac_reg &= 0x890400FF;
391 mt76_wr(dev, MT_TX_ALC_CFG_1, mac_reg);
396 mt76x0_phy_set_chan_bbp_params(struct mt76x02_dev *dev, u16 rf_bw_band)
400 for (i = 0; i < ARRAY_SIZE(mt76x0_bbp_switch_tab); i++) {
401 const struct mt76x0_bbp_switch_item *item = &mt76x0_bbp_switch_tab[i];
402 const struct mt76_reg_pair *pair = &item->reg_pair;
404 if ((rf_bw_band & item->bw_band) != rf_bw_band)
407 if (pair->reg == MT_BBP(AGC, 8)) {
408 u32 val = pair->value;
411 gain = FIELD_GET(MT_BBP_AGC_GAIN, val);
412 gain -= dev->cal.rx.lna_gain * 2;
413 val &= ~MT_BBP_AGC_GAIN;
414 val |= FIELD_PREP(MT_BBP_AGC_GAIN, gain);
415 mt76_wr(dev, pair->reg, val);
417 mt76_wr(dev, pair->reg, pair->value);
422 static void mt76x0_phy_ant_select(struct mt76x02_dev *dev)
424 u16 ee_ant = mt76x02_eeprom_get(dev, MT_EE_ANTENNA);
425 u16 nic_conf2 = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_2);
426 u32 wlan, coex3, cmb;
429 wlan = mt76_rr(dev, MT_WLAN_FUN_CTRL);
430 cmb = mt76_rr(dev, MT_CMB_CTRL);
431 coex3 = mt76_rr(dev, MT_COEXCFG3);
433 cmb &= ~(BIT(14) | BIT(12));
434 wlan &= ~(BIT(6) | BIT(5));
435 coex3 &= ~GENMASK(5, 2);
437 if (ee_ant & MT_EE_ANTENNA_DUAL) {
438 /* dual antenna mode */
439 ant_div = !(nic_conf2 & MT_EE_NIC_CONF_2_ANT_OPT) &&
440 (nic_conf2 & MT_EE_NIC_CONF_2_ANT_DIV);
446 if (dev->mt76.cap.has_2ghz)
449 /* sigle antenna mode */
450 if (dev->mt76.cap.has_5ghz) {
451 coex3 |= BIT(3) | BIT(4);
459 cmb |= BIT(14) | BIT(11);
461 mt76_wr(dev, MT_WLAN_FUN_CTRL, wlan);
462 mt76_wr(dev, MT_CMB_CTRL, cmb);
463 mt76_clear(dev, MT_COEXCFG0, BIT(2));
464 mt76_wr(dev, MT_COEXCFG3, coex3);
468 mt76x0_phy_bbp_set_bw(struct mt76x02_dev *dev, enum nl80211_chan_width width)
470 enum { BW_20 = 0, BW_40 = 1, BW_80 = 2, BW_10 = 4};
475 case NL80211_CHAN_WIDTH_20_NOHT:
476 case NL80211_CHAN_WIDTH_20:
479 case NL80211_CHAN_WIDTH_40:
482 case NL80211_CHAN_WIDTH_80:
485 case NL80211_CHAN_WIDTH_10:
488 case NL80211_CHAN_WIDTH_80P80:
489 case NL80211_CHAN_WIDTH_160:
490 case NL80211_CHAN_WIDTH_5:
495 mt76x02_mcu_function_select(dev, BW_SETTING, bw);
498 static void mt76x0_phy_tssi_dc_calibrate(struct mt76x02_dev *dev)
500 struct ieee80211_channel *chan = dev->mt76.chandef.chan;
503 if (chan->band == NL80211_BAND_5GHZ)
504 mt76x0_rf_clear(dev, MT_RF(0, 67), 0xf);
506 /* bypass ADDA control */
507 mt76_wr(dev, MT_RF_SETTING_0, 0x60002237);
508 mt76_wr(dev, MT_RF_BYPASS_0, 0xffffffff);
511 mt76_set(dev, MT_BBP(CORE, 4), BIT(0));
512 usleep_range(500, 1000);
513 mt76_clear(dev, MT_BBP(CORE, 4), BIT(0));
515 val = (chan->band == NL80211_BAND_5GHZ) ? 0x80055 : 0x80050;
516 mt76_wr(dev, MT_BBP(CORE, 34), val);
518 /* enable TX with DAC0 input */
519 mt76_wr(dev, MT_BBP(TXBE, 6), BIT(31));
521 mt76_poll_msec(dev, MT_BBP(CORE, 34), BIT(4), 0, 200);
522 dev->cal.tssi_dc = mt76_rr(dev, MT_BBP(CORE, 35)) & 0xff;
524 /* stop bypass ADDA */
525 mt76_wr(dev, MT_RF_BYPASS_0, 0);
527 mt76_wr(dev, MT_BBP(TXBE, 6), 0);
529 mt76_set(dev, MT_BBP(CORE, 4), BIT(0));
530 usleep_range(500, 1000);
531 mt76_clear(dev, MT_BBP(CORE, 4), BIT(0));
533 if (chan->band == NL80211_BAND_5GHZ)
534 mt76x0_rf_rmw(dev, MT_RF(0, 67), 0xf, 0x4);
538 mt76x0_phy_tssi_adc_calibrate(struct mt76x02_dev *dev, s16 *ltssi,
541 struct ieee80211_channel *chan = dev->mt76.chandef.chan;
544 val = (chan->band == NL80211_BAND_5GHZ) ? 0x80055 : 0x80050;
545 mt76_wr(dev, MT_BBP(CORE, 34), val);
547 if (!mt76_poll_msec(dev, MT_BBP(CORE, 34), BIT(4), 0, 200)) {
548 mt76_clear(dev, MT_BBP(CORE, 34), BIT(4));
552 *ltssi = mt76_rr(dev, MT_BBP(CORE, 35)) & 0xff;
553 if (chan->band == NL80211_BAND_5GHZ)
556 /* set packet info#1 mode */
557 mt76_wr(dev, MT_BBP(CORE, 34), 0x80041);
558 info[0] = mt76_rr(dev, MT_BBP(CORE, 35)) & 0xff;
560 /* set packet info#2 mode */
561 mt76_wr(dev, MT_BBP(CORE, 34), 0x80042);
562 info[1] = mt76_rr(dev, MT_BBP(CORE, 35)) & 0xff;
564 /* set packet info#3 mode */
565 mt76_wr(dev, MT_BBP(CORE, 34), 0x80043);
566 info[2] = mt76_rr(dev, MT_BBP(CORE, 35)) & 0xff;
571 static u8 mt76x0_phy_get_rf_pa_mode(struct mt76x02_dev *dev,
572 int index, u8 tx_rate)
576 reg = (index == 1) ? MT_RF_PA_MODE_CFG1 : MT_RF_PA_MODE_CFG0;
577 val = mt76_rr(dev, reg);
578 return (val & (3 << (tx_rate * 2))) >> (tx_rate * 2);
582 mt76x0_phy_get_target_power(struct mt76x02_dev *dev, u8 tx_mode,
583 u8 *info, s8 *target_power,
586 u8 tx_rate, cur_power;
588 cur_power = mt76_rr(dev, MT_TX_ALC_CFG_0) & MT_TX_ALC_CFG_0_CH_INIT_0;
592 tx_rate = (info[0] & 0x60) >> 5;
596 *target_power = cur_power + dev->mt76.rate_power.cck[tx_rate];
597 *target_pa_power = mt76x0_phy_get_rf_pa_mode(dev, 0, tx_rate);
603 tx_rate = (info[0] & 0xf0) >> 4;
633 *target_power = cur_power + dev->mt76.rate_power.ofdm[index];
634 *target_pa_power = mt76x0_phy_get_rf_pa_mode(dev, 0, index + 4);
639 tx_rate = info[1] & 0xf;
643 *target_power = cur_power + dev->mt76.rate_power.vht[tx_rate];
644 *target_pa_power = mt76x0_phy_get_rf_pa_mode(dev, 1, tx_rate);
648 tx_rate = info[1] & 0x7f;
652 *target_power = cur_power + dev->mt76.rate_power.ht[tx_rate];
653 *target_pa_power = mt76x0_phy_get_rf_pa_mode(dev, 1, tx_rate);
660 static s16 mt76x0_phy_lin2db(u16 val)
662 u32 mantissa = val << 4;
666 while (mantissa < BIT(15)) {
671 while (mantissa > 0xffff) {
678 if (mantissa <= 47104)
679 data = mantissa + (mantissa >> 3) + (mantissa >> 4) - 38400;
681 data = mantissa - (mantissa >> 3) - (mantissa >> 6) - 23040;
682 data = max_t(int, 0, data);
684 ret = ((15 + exp) << 15) + data;
685 ret = (ret << 2) + (ret << 1) + (ret >> 6) + (ret >> 7);
690 mt76x0_phy_get_delta_power(struct mt76x02_dev *dev, u8 tx_mode,
691 s8 target_power, s8 target_pa_power,
694 struct ieee80211_channel *chan = dev->mt76.chandef.chan;
695 int tssi_target = target_power << 12, tssi_slope;
696 int tssi_offset, tssi_db, ret;
700 if (chan->band == NL80211_BAND_5GHZ) {
704 err = mt76x02_eeprom_copy(dev, MT_EE_TSSI_BOUND1, bound,
709 for (i = 0; i < ARRAY_SIZE(bound); i++) {
710 if (chan->hw_value <= bound[i] || !bound[i])
713 val = mt76x02_eeprom_get(dev, MT_EE_TSSI_SLOPE_5G + i * 2);
715 tssi_offset = val >> 8;
716 if ((tssi_offset >= 64 && tssi_offset <= 127) ||
717 (tssi_offset & BIT(7)))
718 tssi_offset -= BIT(8);
720 val = mt76x02_eeprom_get(dev, MT_EE_TSSI_SLOPE_2G);
722 tssi_offset = val >> 8;
723 if (tssi_offset & BIT(7))
724 tssi_offset -= BIT(8);
726 tssi_slope = val & 0xff;
728 switch (target_pa_power) {
730 if (chan->band == NL80211_BAND_2GHZ)
731 tssi_target += 29491; /* 3.6 * 8192 */
736 tssi_target += 4424; /* 0.54 * 8192 */
741 data = mt76_rr(dev, MT_BBP(CORE, 1));
742 if (is_mt7630(dev) && mt76_is_mmio(dev)) {
745 /* 2.3 * 8192 or 1.5 * 8192 */
746 offset = (data & BIT(5)) ? 18841 : 12288;
747 tssi_target += offset;
748 } else if (data & BIT(5)) {
754 data = mt76_rr(dev, MT_BBP(TXBE, 4));
755 switch (data & 0x3) {
757 tssi_target -= 49152; /* -6db * 8192 */
760 tssi_target -= 98304; /* -12db * 8192 */
763 tssi_target += 49152; /* 6db * 8192 */
769 tssi_db = mt76x0_phy_lin2db(ltssi - dev->cal.tssi_dc) * tssi_slope;
770 if (chan->band == NL80211_BAND_5GHZ) {
771 tssi_db += ((tssi_offset - 50) << 10); /* offset s4.3 */
772 tssi_target -= tssi_db;
773 if (ltssi > 254 && tssi_target > 0) {
778 tssi_db += (tssi_offset << 9); /* offset s3.4 */
779 tssi_target -= tssi_db;
780 /* upper-lower saturate */
781 if ((ltssi > 126 && tssi_target > 0) ||
782 ((ltssi - dev->cal.tssi_dc) < 1 && tssi_target < 0)) {
787 if ((dev->cal.tssi_target ^ tssi_target) < 0 &&
788 dev->cal.tssi_target > -4096 && dev->cal.tssi_target < 4096 &&
789 tssi_target > -4096 && tssi_target < 4096) {
790 if ((tssi_target < 0 &&
791 tssi_target + dev->cal.tssi_target > 0) ||
793 tssi_target + dev->cal.tssi_target <= 0))
796 dev->cal.tssi_target = tssi_target;
798 dev->cal.tssi_target = tssi_target;
801 /* make the compensate value to the nearest compensate code */
808 ret = mt76_get_field(dev, MT_TX_ALC_CFG_1, MT_TX_ALC_CFG_1_TEMP_COMP);
813 ret = min_t(int, 31, ret);
814 return max_t(int, -32, ret);
817 static void mt76x0_phy_tssi_calibrate(struct mt76x02_dev *dev)
819 s8 target_power, target_pa_power;
820 u8 tssi_info[3], tx_mode;
824 if (mt76x0_phy_tssi_adc_calibrate(dev, <ssi, tssi_info) < 0)
827 tx_mode = tssi_info[0] & 0x7;
828 if (mt76x0_phy_get_target_power(dev, tx_mode, tssi_info,
829 &target_power, &target_pa_power) < 0)
832 val = mt76x0_phy_get_delta_power(dev, tx_mode, target_power,
833 target_pa_power, ltssi);
834 mt76_rmw_field(dev, MT_TX_ALC_CFG_1, MT_TX_ALC_CFG_1_TEMP_COMP, val);
837 void mt76x0_phy_set_txpower(struct mt76x02_dev *dev)
839 struct mt76_rate_power *t = &dev->mt76.rate_power;
842 mt76x0_get_tx_power_per_rate(dev, dev->mt76.chandef.chan, t);
843 mt76x0_get_power_info(dev, dev->mt76.chandef.chan, &info);
845 mt76x02_add_rate_power_offset(t, info);
846 mt76x02_limit_rate_power(t, dev->mt76.txpower_conf);
847 dev->mt76.txpower_cur = mt76x02_get_max_rate_power(t);
848 mt76x02_add_rate_power_offset(t, -info);
850 dev->target_power = info;
851 mt76x02_phy_set_txpower(dev, info, info);
854 void mt76x0_phy_calibrate(struct mt76x02_dev *dev, bool power_on)
856 struct ieee80211_channel *chan = dev->mt76.chandef.chan;
857 int is_5ghz = (chan->band == NL80211_BAND_5GHZ) ? 1 : 0;
858 u32 val, tx_alc, reg_val;
864 mt76x02_mcu_calibrate(dev, MCU_CAL_R, 0);
865 mt76x02_mcu_calibrate(dev, MCU_CAL_VCO, chan->hw_value);
866 usleep_range(10, 20);
868 if (mt76x0_tssi_enabled(dev)) {
869 mt76_wr(dev, MT_MAC_SYS_CTRL,
870 MT_MAC_SYS_CTRL_ENABLE_RX);
871 mt76x0_phy_tssi_dc_calibrate(dev);
872 mt76_wr(dev, MT_MAC_SYS_CTRL,
873 MT_MAC_SYS_CTRL_ENABLE_TX |
874 MT_MAC_SYS_CTRL_ENABLE_RX);
878 tx_alc = mt76_rr(dev, MT_TX_ALC_CFG_0);
879 mt76_wr(dev, MT_TX_ALC_CFG_0, 0);
880 usleep_range(500, 700);
882 reg_val = mt76_rr(dev, MT_BBP(IBI, 9));
883 mt76_wr(dev, MT_BBP(IBI, 9), 0xffffff7e);
886 if (chan->hw_value < 100)
888 else if (chan->hw_value < 140)
896 mt76x02_mcu_calibrate(dev, MCU_CAL_FULL, val);
898 mt76x02_mcu_calibrate(dev, MCU_CAL_LC, is_5ghz);
899 usleep_range(15000, 20000);
901 mt76_wr(dev, MT_BBP(IBI, 9), reg_val);
902 mt76_wr(dev, MT_TX_ALC_CFG_0, tx_alc);
903 mt76x02_mcu_calibrate(dev, MCU_CAL_RXDCOC, 1);
905 EXPORT_SYMBOL_GPL(mt76x0_phy_calibrate);
907 int mt76x0_phy_set_channel(struct mt76x02_dev *dev,
908 struct cfg80211_chan_def *chandef)
910 u32 ext_cca_chan[4] = {
911 [0] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 0) |
912 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 1) |
913 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 2) |
914 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 3) |
915 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(0)),
916 [1] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 1) |
917 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 0) |
918 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 2) |
919 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 3) |
920 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(1)),
921 [2] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 2) |
922 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 3) |
923 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 1) |
924 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 0) |
925 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(2)),
926 [3] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 3) |
927 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 2) |
928 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 1) |
929 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 0) |
930 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(3)),
932 bool scan = test_bit(MT76_SCANNING, &dev->mt76.state);
933 int ch_group_index, freq, freq1;
938 freq = chandef->chan->center_freq;
939 freq1 = chandef->center_freq1;
940 channel = chandef->chan->hw_value;
941 rf_bw_band = (channel <= 14) ? RF_G_BAND : RF_A_BAND;
942 dev->mt76.chandef = *chandef;
944 switch (chandef->width) {
945 case NL80211_CHAN_WIDTH_40:
950 channel += 2 - ch_group_index * 4;
951 rf_bw_band |= RF_BW_40;
953 case NL80211_CHAN_WIDTH_80:
954 ch_group_index = (freq - freq1 + 30) / 20;
955 if (WARN_ON(ch_group_index < 0 || ch_group_index > 3))
957 channel += 6 - ch_group_index * 4;
958 rf_bw_band |= RF_BW_80;
962 rf_bw_band |= RF_BW_20;
966 if (mt76_is_usb(dev)) {
967 mt76x0_phy_bbp_set_bw(dev, chandef->width);
969 if (chandef->width == NL80211_CHAN_WIDTH_80 ||
970 chandef->width == NL80211_CHAN_WIDTH_40)
974 mt76_wr(dev, MT_TX_SW_CFG0, val);
976 mt76x02_phy_set_bw(dev, chandef->width, ch_group_index);
977 mt76x02_phy_set_band(dev, chandef->chan->band,
980 mt76_rmw(dev, MT_EXT_CCA_CFG,
981 (MT_EXT_CCA_CFG_CCA0 |
982 MT_EXT_CCA_CFG_CCA1 |
983 MT_EXT_CCA_CFG_CCA2 |
984 MT_EXT_CCA_CFG_CCA3 |
985 MT_EXT_CCA_CFG_CCA_MASK),
986 ext_cca_chan[ch_group_index]);
988 mt76x0_phy_set_band(dev, chandef->chan->band);
989 mt76x0_phy_set_chan_rf_params(dev, channel, rf_bw_band);
991 /* set Japan Tx filter at channel 14 */
993 mt76_set(dev, MT_BBP(CORE, 1), 0x20);
995 mt76_clear(dev, MT_BBP(CORE, 1), 0x20);
997 mt76x0_read_rx_gain(dev);
998 mt76x0_phy_set_chan_bbp_params(dev, rf_bw_band);
1001 mt76x0_rf_set(dev, MT_RF(0, 4), BIT(7));
1005 mt76x02_init_agc_gain(dev);
1006 mt76x0_phy_calibrate(dev, false);
1007 mt76x0_phy_set_txpower(dev);
1009 ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
1010 MT_CALIBRATE_INTERVAL);
1015 static void mt76x0_phy_temp_sensor(struct mt76x02_dev *dev)
1017 u8 rf_b7_73, rf_b0_66, rf_b0_67;
1020 rf_b7_73 = mt76x0_rf_rr(dev, MT_RF(7, 73));
1021 rf_b0_66 = mt76x0_rf_rr(dev, MT_RF(0, 66));
1022 rf_b0_67 = mt76x0_rf_rr(dev, MT_RF(0, 67));
1024 mt76x0_rf_wr(dev, MT_RF(7, 73), 0x02);
1025 mt76x0_rf_wr(dev, MT_RF(0, 66), 0x23);
1026 mt76x0_rf_wr(dev, MT_RF(0, 67), 0x01);
1028 mt76_wr(dev, MT_BBP(CORE, 34), 0x00080055);
1029 if (!mt76_poll_msec(dev, MT_BBP(CORE, 34), BIT(4), 0, 200)) {
1030 mt76_clear(dev, MT_BBP(CORE, 34), BIT(4));
1034 val = mt76_rr(dev, MT_BBP(CORE, 35));
1035 val = (35 * (val - dev->cal.rx.temp_offset)) / 10 + 25;
1037 if (abs(val - dev->cal.temp_vco) > 20) {
1038 mt76x02_mcu_calibrate(dev, MCU_CAL_VCO,
1039 dev->mt76.chandef.chan->hw_value);
1040 dev->cal.temp_vco = val;
1042 if (abs(val - dev->cal.temp) > 30) {
1043 mt76x0_phy_calibrate(dev, false);
1044 dev->cal.temp = val;
1048 mt76x0_rf_wr(dev, MT_RF(7, 73), rf_b7_73);
1049 mt76x0_rf_wr(dev, MT_RF(0, 66), rf_b0_66);
1050 mt76x0_rf_wr(dev, MT_RF(0, 67), rf_b0_67);
1053 static void mt76x0_phy_set_gain_val(struct mt76x02_dev *dev)
1055 u8 gain = dev->cal.agc_gain_cur[0] - dev->cal.agc_gain_adjust;
1057 mt76_rmw_field(dev, MT_BBP(AGC, 8), MT_BBP_AGC_GAIN, gain);
1059 if ((dev->mt76.chandef.chan->flags & IEEE80211_CHAN_RADAR) &&
1061 mt76x02_phy_dfs_adjust_agc(dev);
1065 mt76x0_phy_update_channel_gain(struct mt76x02_dev *dev)
1071 dev->cal.avg_rssi_all = mt76_get_min_avg_rssi(&dev->mt76);
1072 if (!dev->cal.avg_rssi_all)
1073 dev->cal.avg_rssi_all = -75;
1075 low_gain = (dev->cal.avg_rssi_all > mt76x02_get_rssi_gain_thresh(dev)) +
1076 (dev->cal.avg_rssi_all > mt76x02_get_low_rssi_gain_thresh(dev));
1078 gain_change = dev->cal.low_gain < 0 ||
1079 (dev->cal.low_gain & 2) ^ (low_gain & 2);
1080 dev->cal.low_gain = low_gain;
1083 if (mt76x02_phy_adjust_vga_gain(dev))
1084 mt76x0_phy_set_gain_val(dev);
1088 dev->cal.agc_gain_adjust = (low_gain == 2) ? 0 : 10;
1089 gain_delta = (low_gain == 2) ? 10 : 0;
1091 dev->cal.agc_gain_cur[0] = dev->cal.agc_gain_init[0] - gain_delta;
1092 mt76x0_phy_set_gain_val(dev);
1094 /* clear false CCA counters */
1095 mt76_rr(dev, MT_RX_STAT_1);
1098 static void mt76x0_phy_calibration_work(struct work_struct *work)
1100 struct mt76x02_dev *dev = container_of(work, struct mt76x02_dev,
1103 mt76x0_phy_update_channel_gain(dev);
1104 if (mt76x0_tssi_enabled(dev))
1105 mt76x0_phy_tssi_calibrate(dev);
1107 mt76x0_phy_temp_sensor(dev);
1109 ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
1110 4 * MT_CALIBRATE_INTERVAL);
1113 static void mt76x0_rf_patch_reg_array(struct mt76x02_dev *dev,
1114 const struct mt76_reg_pair *rp, int len)
1118 for (i = 0; i < len; i++) {
1119 u32 reg = rp[i].reg;
1120 u8 val = rp[i].value;
1124 if (mt76_is_mmio(dev)) {
1134 if (is_mt7610e(dev))
1142 else if (is_mt7610e(dev))
1150 mt76x0_rf_wr(dev, reg, val);
1154 static void mt76x0_phy_rf_init(struct mt76x02_dev *dev)
1159 mt76x0_rf_patch_reg_array(dev, mt76x0_rf_central_tab,
1160 ARRAY_SIZE(mt76x0_rf_central_tab));
1161 mt76x0_rf_patch_reg_array(dev, mt76x0_rf_2g_channel_0_tab,
1162 ARRAY_SIZE(mt76x0_rf_2g_channel_0_tab));
1163 RF_RANDOM_WRITE(dev, mt76x0_rf_5g_channel_0_tab);
1164 RF_RANDOM_WRITE(dev, mt76x0_rf_vga_channel_0_tab);
1166 for (i = 0; i < ARRAY_SIZE(mt76x0_rf_bw_switch_tab); i++) {
1167 const struct mt76x0_rf_switch_item *item = &mt76x0_rf_bw_switch_tab[i];
1169 if (item->bw_band == RF_BW_20)
1170 mt76x0_rf_wr(dev, item->rf_bank_reg, item->value);
1171 else if (((RF_G_BAND | RF_BW_20) & item->bw_band) == (RF_G_BAND | RF_BW_20))
1172 mt76x0_rf_wr(dev, item->rf_bank_reg, item->value);
1175 for (i = 0; i < ARRAY_SIZE(mt76x0_rf_band_switch_tab); i++) {
1176 if (mt76x0_rf_band_switch_tab[i].bw_band & RF_G_BAND) {
1178 mt76x0_rf_band_switch_tab[i].rf_bank_reg,
1179 mt76x0_rf_band_switch_tab[i].value);
1184 Frequency calibration
1185 E1: B0.R22<6:0>: xo_cxo<6:0>
1186 E2: B0.R21<0>: xo_cxo<0>, B0.R22<7:0>: xo_cxo<8:1>
1188 mt76x0_rf_wr(dev, MT_RF(0, 22),
1189 min_t(u8, dev->cal.rx.freq_offset, 0xbf));
1190 val = mt76x0_rf_rr(dev, MT_RF(0, 22));
1192 /* Reset procedure DAC during power-up:
1197 mt76x0_rf_set(dev, MT_RF(0, 73), BIT(7));
1198 mt76x0_rf_clear(dev, MT_RF(0, 73), BIT(7));
1199 mt76x0_rf_set(dev, MT_RF(0, 73), BIT(7));
1201 /* vcocal_en: initiate VCO calibration (reset after completion)) */
1202 mt76x0_rf_set(dev, MT_RF(0, 4), 0x80);
1205 void mt76x0_phy_init(struct mt76x02_dev *dev)
1207 INIT_DELAYED_WORK(&dev->cal_work, mt76x0_phy_calibration_work);
1209 mt76x0_phy_ant_select(dev);
1210 mt76x0_phy_rf_init(dev);
1211 mt76x02_phy_set_rxpath(dev);
1212 mt76x02_phy_set_txdac(dev);