1 // SPDX-License-Identifier: GPL-2.0-only
3 * (c) Copyright 2002-2010, Ralink Technology, Inc.
12 #include "initvals_phy.h"
14 #include <linux/etherdevice.h>
16 static void mt7601u_agc_reset(struct mt7601u_dev *dev);
19 mt7601u_rf_wr(struct mt7601u_dev *dev, u8 bank, u8 offset, u8 value)
23 if (WARN_ON(!test_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state)) ||
26 if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
29 mutex_lock(&dev->reg_atomic_mutex);
31 if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0, 100)) {
36 mt7601u_wr(dev, MT_RF_CSR_CFG,
37 FIELD_PREP(MT_RF_CSR_CFG_DATA, value) |
38 FIELD_PREP(MT_RF_CSR_CFG_REG_BANK, bank) |
39 FIELD_PREP(MT_RF_CSR_CFG_REG_ID, offset) |
42 trace_rf_write(dev, bank, offset, value);
44 mutex_unlock(&dev->reg_atomic_mutex);
47 dev_err(dev->dev, "Error: RF write %02hhx:%02hhx failed:%d!!\n",
54 mt7601u_rf_rr(struct mt7601u_dev *dev, u8 bank, u8 offset)
59 if (WARN_ON(!test_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state)) ||
62 if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
65 mutex_lock(&dev->reg_atomic_mutex);
67 if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0, 100))
70 mt7601u_wr(dev, MT_RF_CSR_CFG,
71 FIELD_PREP(MT_RF_CSR_CFG_REG_BANK, bank) |
72 FIELD_PREP(MT_RF_CSR_CFG_REG_ID, offset) |
75 if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0, 100))
78 val = mt7601u_rr(dev, MT_RF_CSR_CFG);
79 if (FIELD_GET(MT_RF_CSR_CFG_REG_ID, val) == offset &&
80 FIELD_GET(MT_RF_CSR_CFG_REG_BANK, val) == bank) {
81 ret = FIELD_GET(MT_RF_CSR_CFG_DATA, val);
82 trace_rf_read(dev, bank, offset, ret);
85 mutex_unlock(&dev->reg_atomic_mutex);
88 dev_err(dev->dev, "Error: RF read %02hhx:%02hhx failed:%d!!\n",
95 mt7601u_rf_rmw(struct mt7601u_dev *dev, u8 bank, u8 offset, u8 mask, u8 val)
99 ret = mt7601u_rf_rr(dev, bank, offset);
103 ret = mt7601u_rf_wr(dev, bank, offset, val);
111 mt7601u_rf_set(struct mt7601u_dev *dev, u8 bank, u8 offset, u8 val)
113 return mt7601u_rf_rmw(dev, bank, offset, 0, val);
117 mt7601u_rf_clear(struct mt7601u_dev *dev, u8 bank, u8 offset, u8 mask)
119 return mt7601u_rf_rmw(dev, bank, offset, mask, 0);
122 static void mt7601u_bbp_wr(struct mt7601u_dev *dev, u8 offset, u8 val)
124 if (WARN_ON(!test_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state)) ||
125 test_bit(MT7601U_STATE_REMOVED, &dev->state))
128 mutex_lock(&dev->reg_atomic_mutex);
130 if (!mt76_poll(dev, MT_BBP_CSR_CFG, MT_BBP_CSR_CFG_BUSY, 0, 1000)) {
131 dev_err(dev->dev, "Error: BBP write %02hhx failed!!\n", offset);
135 mt7601u_wr(dev, MT_BBP_CSR_CFG,
136 FIELD_PREP(MT_BBP_CSR_CFG_VAL, val) |
137 FIELD_PREP(MT_BBP_CSR_CFG_REG_NUM, offset) |
138 MT_BBP_CSR_CFG_RW_MODE | MT_BBP_CSR_CFG_BUSY);
139 trace_bbp_write(dev, offset, val);
141 mutex_unlock(&dev->reg_atomic_mutex);
144 static int mt7601u_bbp_rr(struct mt7601u_dev *dev, u8 offset)
147 int ret = -ETIMEDOUT;
149 if (WARN_ON(!test_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state)))
151 if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
154 mutex_lock(&dev->reg_atomic_mutex);
156 if (!mt76_poll(dev, MT_BBP_CSR_CFG, MT_BBP_CSR_CFG_BUSY, 0, 1000))
159 mt7601u_wr(dev, MT_BBP_CSR_CFG,
160 FIELD_PREP(MT_BBP_CSR_CFG_REG_NUM, offset) |
161 MT_BBP_CSR_CFG_RW_MODE | MT_BBP_CSR_CFG_BUSY |
162 MT_BBP_CSR_CFG_READ);
164 if (!mt76_poll(dev, MT_BBP_CSR_CFG, MT_BBP_CSR_CFG_BUSY, 0, 1000))
167 val = mt7601u_rr(dev, MT_BBP_CSR_CFG);
168 if (FIELD_GET(MT_BBP_CSR_CFG_REG_NUM, val) == offset) {
169 ret = FIELD_GET(MT_BBP_CSR_CFG_VAL, val);
170 trace_bbp_read(dev, offset, ret);
173 mutex_unlock(&dev->reg_atomic_mutex);
176 dev_err(dev->dev, "Error: BBP read %02hhx failed:%d!!\n",
182 static int mt7601u_bbp_rmw(struct mt7601u_dev *dev, u8 offset, u8 mask, u8 val)
186 ret = mt7601u_bbp_rr(dev, offset);
190 mt7601u_bbp_wr(dev, offset, val);
195 static u8 mt7601u_bbp_rmc(struct mt7601u_dev *dev, u8 offset, u8 mask, u8 val)
199 ret = mt7601u_bbp_rr(dev, offset);
204 mt7601u_bbp_wr(dev, offset, val);
209 int mt7601u_wait_bbp_ready(struct mt7601u_dev *dev)
215 val = mt7601u_bbp_rr(dev, MT_BBP_REG_VERSION);
216 if (val && val != 0xff)
221 dev_err(dev->dev, "Error: BBP is not ready\n");
228 u32 mt7601u_bbp_set_ctrlch(struct mt7601u_dev *dev, bool below)
230 return mt7601u_bbp_rmc(dev, 3, 0x20, below ? 0x20 : 0);
233 int mt7601u_phy_get_rssi(struct mt7601u_dev *dev,
234 struct mt7601u_rxwi *rxwi, u16 rate)
236 static const s8 lna[2][2][3] = {
238 /* bw20 */ { -2, 15, 33 },
239 /* bw40 */ { 0, 16, 34 }
242 /* bw20 */ { -2, 15, 33 },
243 /* bw40 */ { -2, 16, 34 }
246 int bw = FIELD_GET(MT_RXWI_RATE_BW, rate);
247 int aux_lna = FIELD_GET(MT_RXWI_ANT_AUX_LNA, rxwi->ant);
248 int lna_id = FIELD_GET(MT_RXWI_GAIN_RSSI_LNA_ID, rxwi->gain);
251 if (lna_id) /* LNA id can be 0, 2, 3. */
255 val -= lna[aux_lna][bw][lna_id];
256 val -= FIELD_GET(MT_RXWI_GAIN_RSSI_VAL, rxwi->gain);
257 val -= dev->ee->lna_gain;
258 val -= dev->ee->rssi_offset[0];
263 static void mt7601u_vco_cal(struct mt7601u_dev *dev)
265 mt7601u_rf_wr(dev, 0, 4, 0x0a);
266 mt7601u_rf_wr(dev, 0, 5, 0x20);
267 mt7601u_rf_set(dev, 0, 4, BIT(7));
271 static int mt7601u_set_bw_filter(struct mt7601u_dev *dev, bool cal)
278 if (dev->bw != MT_BW_20)
282 ret = mt7601u_mcu_calibrate(dev, MCU_CAL_BW, filter | 1);
286 return mt7601u_mcu_calibrate(dev, MCU_CAL_BW, filter);
289 static int mt7601u_load_bbp_temp_table_bw(struct mt7601u_dev *dev)
291 const struct reg_table *t;
293 if (WARN_ON(dev->temp_mode > MT_TEMP_MODE_LOW))
296 t = &bbp_mode_table[dev->temp_mode][dev->bw];
298 return mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP, t->regs, t->n);
301 static int mt7601u_bbp_temp(struct mt7601u_dev *dev, int mode, const char *name)
303 const struct reg_table *t;
306 if (dev->temp_mode == mode)
309 dev->temp_mode = mode;
310 trace_temp_mode(dev, mode);
312 t = bbp_mode_table[dev->temp_mode];
313 ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP,
318 return mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP,
319 t[dev->bw].regs, t[dev->bw].n);
322 static void mt7601u_apply_ch14_fixup(struct mt7601u_dev *dev, int hw_chan)
324 struct mt7601u_rate_power *t = &dev->ee->power_rate_table;
326 if (hw_chan != 14 || dev->bw != MT_BW_20) {
327 mt7601u_bbp_rmw(dev, 4, 0x20, 0);
328 mt7601u_bbp_wr(dev, 178, 0xff);
330 t->cck[0].bw20 = dev->ee->real_cck_bw20[0];
331 t->cck[1].bw20 = dev->ee->real_cck_bw20[1];
332 } else { /* Apply CH14 OBW fixup */
333 mt7601u_bbp_wr(dev, 4, 0x60);
334 mt7601u_bbp_wr(dev, 178, 0);
336 /* Note: vendor code is buggy here for negative values */
337 t->cck[0].bw20 = dev->ee->real_cck_bw20[0] - 2;
338 t->cck[1].bw20 = dev->ee->real_cck_bw20[1] - 2;
342 static int __mt7601u_phy_set_channel(struct mt7601u_dev *dev,
343 struct cfg80211_chan_def *chandef)
345 #define FREQ_PLAN_REGS 4
346 static const u8 freq_plan[14][FREQ_PLAN_REGS] = {
347 { 0x99, 0x99, 0x09, 0x50 },
348 { 0x46, 0x44, 0x0a, 0x50 },
349 { 0xec, 0xee, 0x0a, 0x50 },
350 { 0x99, 0x99, 0x0b, 0x50 },
351 { 0x46, 0x44, 0x08, 0x51 },
352 { 0xec, 0xee, 0x08, 0x51 },
353 { 0x99, 0x99, 0x09, 0x51 },
354 { 0x46, 0x44, 0x0a, 0x51 },
355 { 0xec, 0xee, 0x0a, 0x51 },
356 { 0x99, 0x99, 0x0b, 0x51 },
357 { 0x46, 0x44, 0x08, 0x52 },
358 { 0xec, 0xee, 0x08, 0x52 },
359 { 0x99, 0x99, 0x09, 0x52 },
360 { 0x33, 0x33, 0x0b, 0x52 },
362 struct mt76_reg_pair channel_freq_plan[FREQ_PLAN_REGS] = {
363 { 17, 0 }, { 18, 0 }, { 19, 0 }, { 20, 0 },
365 struct mt76_reg_pair bbp_settings[3] = {
366 { 62, 0x37 - dev->ee->lna_gain },
367 { 63, 0x37 - dev->ee->lna_gain },
368 { 64, 0x37 - dev->ee->lna_gain },
371 struct ieee80211_channel *chan = chandef->chan;
372 enum nl80211_channel_type chan_type =
373 cfg80211_get_chandef_type(chandef);
374 struct mt7601u_rate_power *t = &dev->ee->power_rate_table;
381 chan_ext_below = (chan_type == NL80211_CHAN_HT40MINUS);
382 chan_idx = chan->hw_value - 1;
384 if (chandef->width == NL80211_CHAN_WIDTH_40) {
387 if (chan_idx > 1 && chan_type == NL80211_CHAN_HT40MINUS)
389 else if (chan_idx < 12 && chan_type == NL80211_CHAN_HT40PLUS)
392 dev_err(dev->dev, "Error: invalid 40MHz channel!!\n");
395 if (bw != dev->bw || chan_ext_below != dev->chan_ext_below) {
396 dev_dbg(dev->dev, "Info: switching HT mode bw:%d below:%d\n",
399 mt7601u_bbp_set_bw(dev, bw);
401 mt7601u_bbp_set_ctrlch(dev, chan_ext_below);
402 mt7601u_mac_set_ctrlch(dev, chan_ext_below);
403 dev->chan_ext_below = chan_ext_below;
406 for (i = 0; i < FREQ_PLAN_REGS; i++)
407 channel_freq_plan[i].value = freq_plan[chan_idx][i];
409 ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_RF,
410 channel_freq_plan, FREQ_PLAN_REGS);
414 mt7601u_rmw(dev, MT_TX_ALC_CFG_0, 0x3f3f,
415 dev->ee->chan_pwr[chan_idx] & 0x3f);
417 ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP,
418 bbp_settings, ARRAY_SIZE(bbp_settings));
422 mt7601u_vco_cal(dev);
423 mt7601u_bbp_set_bw(dev, bw);
424 ret = mt7601u_set_bw_filter(dev, false);
428 mt7601u_apply_ch14_fixup(dev, chan->hw_value);
429 mt7601u_wr(dev, MT_TX_PWR_CFG_0, int_to_s6(t->ofdm[1].bw20) << 24 |
430 int_to_s6(t->ofdm[0].bw20) << 16 |
431 int_to_s6(t->cck[1].bw20) << 8 |
432 int_to_s6(t->cck[0].bw20));
434 if (test_bit(MT7601U_STATE_SCANNING, &dev->state))
435 mt7601u_agc_reset(dev);
437 dev->chandef = *chandef;
442 int mt7601u_phy_set_channel(struct mt7601u_dev *dev,
443 struct cfg80211_chan_def *chandef)
447 cancel_delayed_work_sync(&dev->cal_work);
448 cancel_delayed_work_sync(&dev->freq_cal.work);
450 mutex_lock(&dev->hw_atomic_mutex);
451 ret = __mt7601u_phy_set_channel(dev, chandef);
452 mutex_unlock(&dev->hw_atomic_mutex);
456 if (test_bit(MT7601U_STATE_SCANNING, &dev->state))
459 ieee80211_queue_delayed_work(dev->hw, &dev->cal_work,
460 MT_CALIBRATE_INTERVAL);
461 if (dev->freq_cal.enabled)
462 ieee80211_queue_delayed_work(dev->hw, &dev->freq_cal.work,
463 MT_FREQ_CAL_INIT_DELAY);
467 #define BBP_R47_FLAG GENMASK(2, 0)
468 #define BBP_R47_F_TSSI 0
469 #define BBP_R47_F_PKT_T 1
470 #define BBP_R47_F_TX_RATE 2
471 #define BBP_R47_F_TEMP 4
473 * mt7601u_bbp_r47_get - read value through BBP R47/R49 pair
474 * @dev: pointer to adapter structure
475 * @reg: value of BBP R47 before the operation
476 * @flag: one of the BBP_R47_F_* flags
478 * Convenience helper for reading values through BBP R47/R49 pair.
479 * Takes old value of BBP R47 as @reg, because callers usually have it
482 * Return: value of BBP R49.
484 static u8 mt7601u_bbp_r47_get(struct mt7601u_dev *dev, u8 reg, u8 flag)
486 flag |= reg & ~BBP_R47_FLAG;
487 mt7601u_bbp_wr(dev, 47, flag);
488 usleep_range(500, 700);
489 return mt7601u_bbp_rr(dev, 49);
492 static s8 mt7601u_read_bootup_temp(struct mt7601u_dev *dev)
498 rf_set = mt7601u_rr(dev, MT_RF_SETTING_0);
499 rf_bp = mt7601u_rr(dev, MT_RF_BYPASS_0);
501 mt7601u_wr(dev, MT_RF_BYPASS_0, 0);
502 mt7601u_wr(dev, MT_RF_SETTING_0, 0x00000010);
503 mt7601u_wr(dev, MT_RF_BYPASS_0, 0x00000010);
505 bbp_val = mt7601u_bbp_rmw(dev, 47, 0, 0x10);
507 mt7601u_bbp_wr(dev, 22, 0x40);
509 for (i = 100; i && (bbp_val & 0x10); i--)
510 bbp_val = mt7601u_bbp_rr(dev, 47);
512 temp = mt7601u_bbp_r47_get(dev, bbp_val, BBP_R47_F_TEMP);
514 mt7601u_bbp_wr(dev, 22, 0);
516 bbp_val = mt7601u_bbp_rr(dev, 21);
518 mt7601u_bbp_wr(dev, 21, bbp_val);
520 mt7601u_bbp_wr(dev, 21, bbp_val);
522 mt7601u_wr(dev, MT_RF_BYPASS_0, 0);
523 mt7601u_wr(dev, MT_RF_SETTING_0, rf_set);
524 mt7601u_wr(dev, MT_RF_BYPASS_0, rf_bp);
526 trace_read_temp(dev, temp);
530 static s8 mt7601u_read_temp(struct mt7601u_dev *dev)
536 val = mt7601u_bbp_rmw(dev, 47, 0x7f, 0x10);
538 /* Note: this rarely succeeds, temp can change even if it fails. */
539 for (i = 100; i && (val & 0x10); i--)
540 val = mt7601u_bbp_rr(dev, 47);
542 temp = mt7601u_bbp_r47_get(dev, val, BBP_R47_F_TEMP);
544 trace_read_temp(dev, temp);
548 static void mt7601u_rxdc_cal(struct mt7601u_dev *dev)
550 static const struct mt76_reg_pair intro[] = {
551 { 158, 0x8d }, { 159, 0xfc },
552 { 158, 0x8c }, { 159, 0x4c },
554 { 158, 0x8d }, { 159, 0xe0 },
559 mac_ctrl = mt7601u_rr(dev, MT_MAC_SYS_CTRL);
560 mt7601u_wr(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_ENABLE_RX);
562 ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP,
563 intro, ARRAY_SIZE(intro));
565 dev_err(dev->dev, "%s intro failed:%d\n", __func__, ret);
567 for (i = 20; i; i--) {
568 usleep_range(300, 500);
570 mt7601u_bbp_wr(dev, 158, 0x8c);
571 if (mt7601u_bbp_rr(dev, 159) == 0x0c)
575 dev_err(dev->dev, "%s timed out\n", __func__);
577 mt7601u_wr(dev, MT_MAC_SYS_CTRL, 0);
579 ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP,
580 outro, ARRAY_SIZE(outro));
582 dev_err(dev->dev, "%s outro failed:%d\n", __func__, ret);
584 mt7601u_wr(dev, MT_MAC_SYS_CTRL, mac_ctrl);
587 void mt7601u_phy_recalibrate_after_assoc(struct mt7601u_dev *dev)
589 if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
592 mt7601u_mcu_calibrate(dev, MCU_CAL_DPD, dev->curr_temp);
594 mt7601u_rxdc_cal(dev);
597 /* Note: function copied from vendor driver */
598 static s16 lin2dBd(u16 linear)
601 unsigned int mantisa;
604 if (WARN_ON(!linear))
609 exp = fls(mantisa) - 16;
613 mantisa <<= abs(exp);
615 if (mantisa <= 0xb800)
616 app = (mantisa + (mantisa >> 3) + (mantisa >> 4) - 0x9600);
618 app = (mantisa - (mantisa >> 3) - (mantisa >> 6) - 0x5a00);
622 dBd = ((15 + exp) << 15) + app;
623 dBd = (dBd << 2) + (dBd << 1) + (dBd >> 6) + (dBd >> 7);
630 mt7601u_set_initial_tssi(struct mt7601u_dev *dev, s16 tssi_db, s16 tssi_hvga_db)
632 struct tssi_data *d = &dev->ee->tssi_data;
635 init_offset = -((tssi_db * d->slope + d->offset[1]) / 4096) + 10;
637 mt76_rmw(dev, MT_TX_ALC_CFG_1, MT_TX_ALC_CFG_1_TEMP_COMP,
638 int_to_s6(init_offset) & MT_TX_ALC_CFG_1_TEMP_COMP);
641 static void mt7601u_tssi_dc_gain_cal(struct mt7601u_dev *dev)
643 u8 rf_vga, rf_mixer, bbp_r47;
646 s16 tssi_init_db, tssi_init_hvga_db;
648 mt7601u_wr(dev, MT_RF_SETTING_0, 0x00000030);
649 mt7601u_wr(dev, MT_RF_BYPASS_0, 0x000c0030);
650 mt7601u_wr(dev, MT_MAC_SYS_CTRL, 0);
652 mt7601u_bbp_wr(dev, 58, 0);
653 mt7601u_bbp_wr(dev, 241, 0x2);
654 mt7601u_bbp_wr(dev, 23, 0x8);
655 bbp_r47 = mt7601u_bbp_rr(dev, 47);
658 rf_vga = mt7601u_rf_rr(dev, 5, 3);
659 mt7601u_rf_wr(dev, 5, 3, 8);
662 rf_mixer = mt7601u_rf_rr(dev, 4, 39);
663 mt7601u_rf_wr(dev, 4, 39, 0);
665 for (i = 0; i < 4; i++) {
666 mt7601u_rf_wr(dev, 4, 39, (i & 1) ? rf_mixer : 0);
668 mt7601u_bbp_wr(dev, 23, (i < 2) ? 0x08 : 0x02);
669 mt7601u_rf_wr(dev, 5, 3, (i < 2) ? 0x08 : 0x11);
671 /* BBP TSSI initial and soft reset */
672 mt7601u_bbp_wr(dev, 22, 0);
673 mt7601u_bbp_wr(dev, 244, 0);
675 mt7601u_bbp_wr(dev, 21, 1);
677 mt7601u_bbp_wr(dev, 21, 0);
679 /* TSSI measurement */
680 mt7601u_bbp_wr(dev, 47, 0x50);
681 mt7601u_bbp_wr(dev, (i & 1) ? 244 : 22, (i & 1) ? 0x31 : 0x40);
684 if (!(mt7601u_bbp_rr(dev, 47) & 0x10))
687 dev_err(dev->dev, "%s timed out\n", __func__);
690 mt7601u_bbp_wr(dev, 47, 0x40);
691 res[i] = mt7601u_bbp_rr(dev, 49);
694 tssi_init_db = lin2dBd((short)res[1] - res[0]);
695 tssi_init_hvga_db = lin2dBd(((short)res[3] - res[2]) * 4);
696 dev->tssi_init = res[0];
697 dev->tssi_init_hvga = res[2];
698 dev->tssi_init_hvga_offset_db = tssi_init_hvga_db - tssi_init_db;
701 "TSSI_init:%hhx db:%hx hvga:%hhx hvga_db:%hx off_db:%hx\n",
702 dev->tssi_init, tssi_init_db, dev->tssi_init_hvga,
703 tssi_init_hvga_db, dev->tssi_init_hvga_offset_db);
705 mt7601u_bbp_wr(dev, 22, 0);
706 mt7601u_bbp_wr(dev, 244, 0);
708 mt7601u_bbp_wr(dev, 21, 1);
710 mt7601u_bbp_wr(dev, 21, 0);
712 mt7601u_wr(dev, MT_RF_BYPASS_0, 0);
713 mt7601u_wr(dev, MT_RF_SETTING_0, 0);
715 mt7601u_rf_wr(dev, 5, 3, rf_vga);
716 mt7601u_rf_wr(dev, 4, 39, rf_mixer);
717 mt7601u_bbp_wr(dev, 47, bbp_r47);
719 mt7601u_set_initial_tssi(dev, tssi_init_db, tssi_init_hvga_db);
722 static int mt7601u_temp_comp(struct mt7601u_dev *dev, bool on)
724 int ret, temp, hi_temp = 400, lo_temp = -200;
726 temp = (dev->raw_temp - dev->ee->ref_temp) * MT_EE_TEMPERATURE_SLOPE;
727 dev->curr_temp = temp;
729 /* DPD Calibration */
730 if (temp - dev->dpd_temp > 450 || temp - dev->dpd_temp < -450) {
731 dev->dpd_temp = temp;
733 ret = mt7601u_mcu_calibrate(dev, MCU_CAL_DPD, dev->dpd_temp);
737 mt7601u_vco_cal(dev);
739 dev_dbg(dev->dev, "Recalibrate DPD\n");
742 /* PLL Lock Protect */
743 if (temp < -50 && !dev->pll_lock_protect) { /* < 20C */
744 dev->pll_lock_protect = true;
746 mt7601u_rf_wr(dev, 4, 4, 6);
747 mt7601u_rf_clear(dev, 4, 10, 0x30);
749 dev_dbg(dev->dev, "PLL lock protect on - too cold\n");
750 } else if (temp > 50 && dev->pll_lock_protect) { /* > 30C */
751 dev->pll_lock_protect = false;
753 mt7601u_rf_wr(dev, 4, 4, 0);
754 mt7601u_rf_rmw(dev, 4, 10, 0x30, 0x10);
756 dev_dbg(dev->dev, "PLL lock protect off\n");
764 /* BBP CR for H, L, N temperature */
766 return mt7601u_bbp_temp(dev, MT_TEMP_MODE_HIGH, "high");
767 else if (temp > lo_temp)
768 return mt7601u_bbp_temp(dev, MT_TEMP_MODE_NORMAL, "normal");
770 return mt7601u_bbp_temp(dev, MT_TEMP_MODE_LOW, "low");
773 /* Note: this is used only with TSSI, we can just use trgt_pwr from eeprom. */
774 static int mt7601u_current_tx_power(struct mt7601u_dev *dev)
776 return dev->ee->chan_pwr[dev->chandef.chan->hw_value - 1];
779 static bool mt7601u_use_hvga(struct mt7601u_dev *dev)
781 return !(mt7601u_current_tx_power(dev) > 20);
785 mt7601u_phy_rf_pa_mode_val(struct mt7601u_dev *dev, int phy_mode, int tx_rate)
787 static const s16 decode_tb[] = { 0, 8847, -5734, -5734 };
791 case MT_PHY_TYPE_OFDM:
794 case MT_PHY_TYPE_CCK:
795 reg = dev->rf_pa_mode[0];
798 reg = dev->rf_pa_mode[1];
802 return decode_tb[(reg >> (tx_rate * 2)) & 0x3];
805 static struct mt7601u_tssi_params
806 mt7601u_tssi_params_get(struct mt7601u_dev *dev)
808 static const u8 ofdm_pkt2rate[8] = { 6, 4, 2, 0, 7, 5, 3, 1 };
809 static const int static_power[4] = { 0, -49152, -98304, 49152 };
810 struct mt7601u_tssi_params p;
811 u8 bbp_r47, pkt_type, tx_rate;
812 struct power_per_rate *rate_table;
814 bbp_r47 = mt7601u_bbp_rr(dev, 47);
816 p.tssi0 = mt7601u_bbp_r47_get(dev, bbp_r47, BBP_R47_F_TSSI);
817 dev->raw_temp = mt7601u_bbp_r47_get(dev, bbp_r47, BBP_R47_F_TEMP);
818 pkt_type = mt7601u_bbp_r47_get(dev, bbp_r47, BBP_R47_F_PKT_T);
820 p.trgt_power = mt7601u_current_tx_power(dev);
822 switch (pkt_type & 0x03) {
823 case MT_PHY_TYPE_CCK:
824 tx_rate = (pkt_type >> 4) & 0x03;
825 rate_table = dev->ee->power_rate_table.cck;
828 case MT_PHY_TYPE_OFDM:
829 tx_rate = ofdm_pkt2rate[(pkt_type >> 4) & 0x07];
830 rate_table = dev->ee->power_rate_table.ofdm;
834 tx_rate = mt7601u_bbp_r47_get(dev, bbp_r47, BBP_R47_F_TX_RATE);
836 rate_table = dev->ee->power_rate_table.ht;
840 if (dev->bw == MT_BW_20)
841 p.trgt_power += rate_table[tx_rate / 2].bw20;
843 p.trgt_power += rate_table[tx_rate / 2].bw40;
847 dev_dbg(dev->dev, "tx_rate:%02hhx pwr:%08x\n", tx_rate, p.trgt_power);
849 p.trgt_power += mt7601u_phy_rf_pa_mode_val(dev, pkt_type & 0x03,
852 /* Channel 14, cck, bw20 */
853 if ((pkt_type & 0x03) == MT_PHY_TYPE_CCK) {
854 if (mt7601u_bbp_rr(dev, 4) & 0x20)
855 p.trgt_power += mt7601u_bbp_rr(dev, 178) ? 18022 : 9830;
857 p.trgt_power += mt7601u_bbp_rr(dev, 178) ? 819 : 24576;
860 p.trgt_power += static_power[mt7601u_bbp_rr(dev, 1) & 0x03];
862 p.trgt_power += dev->ee->tssi_data.tx0_delta_offset;
865 "tssi:%02hhx t_power:%08x temp:%02hhx pkt_type:%02hhx\n",
866 p.tssi0, p.trgt_power, dev->raw_temp, pkt_type);
871 static bool mt7601u_tssi_read_ready(struct mt7601u_dev *dev)
873 return !(mt7601u_bbp_rr(dev, 47) & 0x10);
876 static int mt7601u_tssi_cal(struct mt7601u_dev *dev)
878 struct mt7601u_tssi_params params;
879 int curr_pwr, diff_pwr;
882 s16 tssi_m_dc, tssi_db;
886 if (!dev->ee->tssi_enabled)
889 hvga = mt7601u_use_hvga(dev);
890 if (!dev->tssi_read_trig)
891 return mt7601u_mcu_tssi_read_kick(dev, hvga);
893 if (!mt7601u_tssi_read_ready(dev))
896 params = mt7601u_tssi_params_get(dev);
898 tssi_init = (hvga ? dev->tssi_init_hvga : dev->tssi_init);
899 tssi_m_dc = params.tssi0 - tssi_init;
900 tssi_db = lin2dBd(tssi_m_dc);
901 dev_dbg(dev->dev, "tssi dc:%04hx db:%04hx hvga:%d\n",
902 tssi_m_dc, tssi_db, hvga);
904 if (dev->chandef.chan->hw_value < 5)
905 tssi_offset = dev->ee->tssi_data.offset[0];
906 else if (dev->chandef.chan->hw_value < 9)
907 tssi_offset = dev->ee->tssi_data.offset[1];
909 tssi_offset = dev->ee->tssi_data.offset[2];
912 tssi_db -= dev->tssi_init_hvga_offset_db;
914 curr_pwr = tssi_db * dev->ee->tssi_data.slope + (tssi_offset << 9);
915 diff_pwr = params.trgt_power - curr_pwr;
916 dev_dbg(dev->dev, "Power curr:%08x diff:%08x\n", curr_pwr, diff_pwr);
918 if (params.tssi0 > 126 && diff_pwr > 0) {
919 dev_err(dev->dev, "Error: TSSI upper saturation\n");
922 if (params.tssi0 - tssi_init < 1 && diff_pwr < 0) {
923 dev_err(dev->dev, "Error: TSSI lower saturation\n");
927 if ((dev->prev_pwr_diff ^ diff_pwr) < 0 && abs(diff_pwr) < 4096 &&
928 (abs(diff_pwr) > abs(dev->prev_pwr_diff) ||
929 (diff_pwr > 0 && diff_pwr == -dev->prev_pwr_diff)))
932 dev->prev_pwr_diff = diff_pwr;
934 diff_pwr += (diff_pwr > 0) ? 2048 : -2048;
937 dev_dbg(dev->dev, "final diff: %08x\n", diff_pwr);
939 val = mt7601u_rr(dev, MT_TX_ALC_CFG_1);
940 curr_pwr = s6_to_int(FIELD_GET(MT_TX_ALC_CFG_1_TEMP_COMP, val));
941 diff_pwr += curr_pwr;
942 val = (val & ~MT_TX_ALC_CFG_1_TEMP_COMP) | int_to_s6(diff_pwr);
943 mt7601u_wr(dev, MT_TX_ALC_CFG_1, val);
945 return mt7601u_mcu_tssi_read_kick(dev, hvga);
948 static u8 mt7601u_agc_default(struct mt7601u_dev *dev)
950 return (dev->ee->lna_gain - 8) * 2 + 0x34;
953 static void mt7601u_agc_reset(struct mt7601u_dev *dev)
955 u8 agc = mt7601u_agc_default(dev);
957 mt7601u_bbp_wr(dev, 66, agc);
960 void mt7601u_agc_save(struct mt7601u_dev *dev)
962 dev->agc_save = mt7601u_bbp_rr(dev, 66);
965 void mt7601u_agc_restore(struct mt7601u_dev *dev)
967 mt7601u_bbp_wr(dev, 66, dev->agc_save);
970 static void mt7601u_agc_tune(struct mt7601u_dev *dev)
972 u8 val = mt7601u_agc_default(dev);
975 if (test_bit(MT7601U_STATE_SCANNING, &dev->state))
978 /* Note: only in STA mode and not dozing; perhaps do this only if
979 * there is enough rssi updates since last run?
980 * Rssi updates are only on beacons and U2M so should work...
982 spin_lock_bh(&dev->con_mon_lock);
983 avg_rssi = ewma_rssi_read(&dev->avg_rssi);
984 spin_unlock_bh(&dev->con_mon_lock);
988 avg_rssi = -avg_rssi;
991 else if (avg_rssi <= -60)
994 if (val != mt7601u_bbp_rr(dev, 66))
995 mt7601u_bbp_wr(dev, 66, val);
997 /* TODO: also if lost a lot of beacons try resetting
998 * (see RTMPSetAGCInitValue() call in mlme.c).
1002 static void mt7601u_phy_calibrate(struct work_struct *work)
1004 struct mt7601u_dev *dev = container_of(work, struct mt7601u_dev,
1007 mt7601u_agc_tune(dev);
1008 mt7601u_tssi_cal(dev);
1009 /* If TSSI calibration was run it already updated temperature. */
1010 if (!dev->ee->tssi_enabled)
1011 dev->raw_temp = mt7601u_read_temp(dev);
1012 mt7601u_temp_comp(dev, true); /* TODO: find right value for @on */
1014 ieee80211_queue_delayed_work(dev->hw, &dev->cal_work,
1015 MT_CALIBRATE_INTERVAL);
1018 static unsigned long
1019 __mt7601u_phy_freq_cal(struct mt7601u_dev *dev, s8 last_offset, u8 phy_mode)
1021 u8 activate_threshold, deactivate_threshold;
1023 trace_freq_cal_offset(dev, phy_mode, last_offset);
1025 /* No beacons received - reschedule soon */
1026 if (last_offset == MT_FREQ_OFFSET_INVALID)
1027 return MT_FREQ_CAL_ADJ_INTERVAL;
1030 case MT_PHY_TYPE_CCK:
1031 activate_threshold = 19;
1032 deactivate_threshold = 5;
1034 case MT_PHY_TYPE_OFDM:
1035 activate_threshold = 102;
1036 deactivate_threshold = 32;
1038 case MT_PHY_TYPE_HT:
1039 case MT_PHY_TYPE_HT_GF:
1040 activate_threshold = 82;
1041 deactivate_threshold = 20;
1045 return MT_FREQ_CAL_CHECK_INTERVAL;
1048 if (abs(last_offset) >= activate_threshold)
1049 dev->freq_cal.adjusting = true;
1050 else if (abs(last_offset) <= deactivate_threshold)
1051 dev->freq_cal.adjusting = false;
1053 if (!dev->freq_cal.adjusting)
1054 return MT_FREQ_CAL_CHECK_INTERVAL;
1056 if (last_offset > deactivate_threshold) {
1057 if (dev->freq_cal.freq > 0)
1058 dev->freq_cal.freq--;
1060 dev->freq_cal.adjusting = false;
1061 } else if (last_offset < -deactivate_threshold) {
1062 if (dev->freq_cal.freq < 0xbf)
1063 dev->freq_cal.freq++;
1065 dev->freq_cal.adjusting = false;
1068 trace_freq_cal_adjust(dev, dev->freq_cal.freq);
1069 mt7601u_rf_wr(dev, 0, 12, dev->freq_cal.freq);
1070 mt7601u_vco_cal(dev);
1072 return dev->freq_cal.adjusting ? MT_FREQ_CAL_ADJ_INTERVAL :
1073 MT_FREQ_CAL_CHECK_INTERVAL;
1076 static void mt7601u_phy_freq_cal(struct work_struct *work)
1078 struct mt7601u_dev *dev = container_of(work, struct mt7601u_dev,
1079 freq_cal.work.work);
1082 unsigned long delay;
1084 spin_lock_bh(&dev->con_mon_lock);
1085 last_offset = dev->bcn_freq_off;
1086 phy_mode = dev->bcn_phy_mode;
1087 spin_unlock_bh(&dev->con_mon_lock);
1089 delay = __mt7601u_phy_freq_cal(dev, last_offset, phy_mode);
1090 ieee80211_queue_delayed_work(dev->hw, &dev->freq_cal.work, delay);
1092 spin_lock_bh(&dev->con_mon_lock);
1093 dev->bcn_freq_off = MT_FREQ_OFFSET_INVALID;
1094 spin_unlock_bh(&dev->con_mon_lock);
1097 void mt7601u_phy_con_cal_onoff(struct mt7601u_dev *dev,
1098 struct ieee80211_bss_conf *info)
1100 struct ieee80211_vif *vif = container_of(info, struct ieee80211_vif,
1103 if (!vif->cfg.assoc)
1104 cancel_delayed_work_sync(&dev->freq_cal.work);
1106 /* Start/stop collecting beacon data */
1107 spin_lock_bh(&dev->con_mon_lock);
1108 ether_addr_copy(dev->ap_bssid, info->bssid);
1109 ewma_rssi_init(&dev->avg_rssi);
1110 dev->bcn_freq_off = MT_FREQ_OFFSET_INVALID;
1111 spin_unlock_bh(&dev->con_mon_lock);
1113 dev->freq_cal.freq = dev->ee->rf_freq_off;
1114 dev->freq_cal.enabled = vif->cfg.assoc;
1115 dev->freq_cal.adjusting = false;
1118 ieee80211_queue_delayed_work(dev->hw, &dev->freq_cal.work,
1119 MT_FREQ_CAL_INIT_DELAY);
1122 static int mt7601u_init_cal(struct mt7601u_dev *dev)
1127 dev->raw_temp = mt7601u_read_bootup_temp(dev);
1128 dev->curr_temp = (dev->raw_temp - dev->ee->ref_temp) *
1129 MT_EE_TEMPERATURE_SLOPE;
1130 dev->dpd_temp = dev->curr_temp;
1132 mac_ctrl = mt7601u_rr(dev, MT_MAC_SYS_CTRL);
1134 ret = mt7601u_mcu_calibrate(dev, MCU_CAL_R, 0);
1138 ret = mt7601u_rf_rr(dev, 0, 4);
1142 ret = mt7601u_rf_wr(dev, 0, 4, ret);
1147 ret = mt7601u_mcu_calibrate(dev, MCU_CAL_TXDCOC, 0);
1151 mt7601u_rxdc_cal(dev);
1153 ret = mt7601u_set_bw_filter(dev, true);
1156 ret = mt7601u_mcu_calibrate(dev, MCU_CAL_LOFT, 0);
1159 ret = mt7601u_mcu_calibrate(dev, MCU_CAL_TXIQ, 0);
1162 ret = mt7601u_mcu_calibrate(dev, MCU_CAL_RXIQ, 0);
1165 ret = mt7601u_mcu_calibrate(dev, MCU_CAL_DPD, dev->dpd_temp);
1169 mt7601u_rxdc_cal(dev);
1171 mt7601u_tssi_dc_gain_cal(dev);
1173 mt7601u_wr(dev, MT_MAC_SYS_CTRL, mac_ctrl);
1175 mt7601u_temp_comp(dev, true);
1180 int mt7601u_bbp_set_bw(struct mt7601u_dev *dev, int bw)
1184 if (bw == dev->bw) {
1185 /* Vendor driver does the rmc even when no change is needed. */
1186 mt7601u_bbp_rmc(dev, 4, 0x18, bw == MT_BW_20 ? 0 : 0x10);
1192 /* Stop MAC for the time of bw change */
1193 old = mt7601u_rr(dev, MT_MAC_SYS_CTRL);
1194 val = old & ~(MT_MAC_SYS_CTRL_ENABLE_TX | MT_MAC_SYS_CTRL_ENABLE_RX);
1195 mt7601u_wr(dev, MT_MAC_SYS_CTRL, val);
1196 mt76_poll(dev, MT_MAC_STATUS, MT_MAC_STATUS_TX | MT_MAC_STATUS_RX,
1199 mt7601u_bbp_rmc(dev, 4, 0x18, bw == MT_BW_20 ? 0 : 0x10);
1201 mt7601u_wr(dev, MT_MAC_SYS_CTRL, old);
1203 return mt7601u_load_bbp_temp_table_bw(dev);
1207 * mt7601u_set_rx_path - set rx path in BBP
1208 * @dev: pointer to adapter structure
1209 * @path: rx path to set values are 0-based
1211 void mt7601u_set_rx_path(struct mt7601u_dev *dev, u8 path)
1213 mt7601u_bbp_rmw(dev, 3, 0x18, path << 3);
1217 * mt7601u_set_tx_dac - set which tx DAC to use
1218 * @dev: pointer to adapter structure
1219 * @dac: DAC index, values are 0-based
1221 void mt7601u_set_tx_dac(struct mt7601u_dev *dev, u8 dac)
1223 mt7601u_bbp_rmc(dev, 1, 0x18, dac << 3);
1226 int mt7601u_phy_init(struct mt7601u_dev *dev)
1230 dev->rf_pa_mode[0] = mt7601u_rr(dev, MT_RF_PA_MODE_CFG0);
1231 dev->rf_pa_mode[1] = mt7601u_rr(dev, MT_RF_PA_MODE_CFG1);
1233 ret = mt7601u_rf_wr(dev, 0, 12, dev->ee->rf_freq_off);
1236 ret = mt7601u_write_reg_pairs(dev, 0, rf_central,
1237 ARRAY_SIZE(rf_central));
1240 ret = mt7601u_write_reg_pairs(dev, 0, rf_channel,
1241 ARRAY_SIZE(rf_channel));
1244 ret = mt7601u_write_reg_pairs(dev, 0, rf_vga, ARRAY_SIZE(rf_vga));
1248 ret = mt7601u_init_cal(dev);
1252 dev->prev_pwr_diff = 100;
1254 INIT_DELAYED_WORK(&dev->cal_work, mt7601u_phy_calibrate);
1255 INIT_DELAYED_WORK(&dev->freq_cal.work, mt7601u_phy_freq_cal);