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Merge tag 'drm/tegra/for-5.1-rc5' of git://anongit.freedesktop.org/tegra/linux into...
[thirdparty/kernel/stable.git] / drivers / net / wireless / mediatek / mt76 / mt76x2 / phy.c
CommitLineData
5f0d10ce
LB		 1/*
2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
3 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include "mt76x2.h"
1613c621
LB		 19#include "eeprom.h"
20#include "mcu.h"
21#include "../mt76x02_phy.h"
5f0d10ce
LB		 22
23static void
e40803f2 24mt76x2_adjust_high_lna_gain(struct mt76x02_dev *dev, int reg, s8 offset)
5f0d10ce
LB		 25{
26 s8 gain;
27
28 gain = FIELD_GET(MT_BBP_AGC_LNA_HIGH_GAIN, mt76_rr(dev, MT_BBP(AGC, reg)));
29 gain -= offset / 2;
30 mt76_rmw_field(dev, MT_BBP(AGC, reg), MT_BBP_AGC_LNA_HIGH_GAIN, gain);
31}
32
33static void
e40803f2 34mt76x2_adjust_agc_gain(struct mt76x02_dev *dev, int reg, s8 offset)
5f0d10ce
LB		 35{
36 s8 gain;
37
38 gain = FIELD_GET(MT_BBP_AGC_GAIN, mt76_rr(dev, MT_BBP(AGC, reg)));
39 gain += offset;
40 mt76_rmw_field(dev, MT_BBP(AGC, reg), MT_BBP_AGC_GAIN, gain);
41}
42
e40803f2 43void mt76x2_apply_gain_adj(struct mt76x02_dev *dev)
5f0d10ce
LB		 44{
45 s8 *gain_adj = dev->cal.rx.high_gain;
46
47 mt76x2_adjust_high_lna_gain(dev, 4, gain_adj[0]);
48 mt76x2_adjust_high_lna_gain(dev, 5, gain_adj[1]);
49
50 mt76x2_adjust_agc_gain(dev, 8, gain_adj[0]);
51 mt76x2_adjust_agc_gain(dev, 9, gain_adj[1]);
52}
53EXPORT_SYMBOL_GPL(mt76x2_apply_gain_adj);
54
e40803f2 55void mt76x2_phy_set_txpower_regs(struct mt76x02_dev *dev,
5f0d10ce
LB		 56 enum nl80211_band band)
57{
58 u32 pa_mode[2];
59 u32 pa_mode_adj;
60
61 if (band == NL80211_BAND_2GHZ) {
62 pa_mode[0] = 0x010055ff;
63 pa_mode[1] = 0x00550055;
64
65 mt76_wr(dev, MT_TX_ALC_CFG_2, 0x35160a00);
66 mt76_wr(dev, MT_TX_ALC_CFG_3, 0x35160a06);
67
26a9daa6 68 if (mt76x02_ext_pa_enabled(dev, band)) {
5f0d10ce
LB		 69 mt76_wr(dev, MT_RF_PA_MODE_ADJ0, 0x0000ec00);
70 mt76_wr(dev, MT_RF_PA_MODE_ADJ1, 0x0000ec00);
71 } else {
72 mt76_wr(dev, MT_RF_PA_MODE_ADJ0, 0xf4000200);
73 mt76_wr(dev, MT_RF_PA_MODE_ADJ1, 0xfa000200);
74 }
75 } else {
76 pa_mode[0] = 0x0000ffff;
77 pa_mode[1] = 0x00ff00ff;
78
26a9daa6 79 if (mt76x02_ext_pa_enabled(dev, band)) {
5f0d10ce
LB		 80 mt76_wr(dev, MT_TX_ALC_CFG_2, 0x2f0f0400);
81 mt76_wr(dev, MT_TX_ALC_CFG_3, 0x2f0f0476);
82 } else {
83 mt76_wr(dev, MT_TX_ALC_CFG_2, 0x1b0f0400);
84 mt76_wr(dev, MT_TX_ALC_CFG_3, 0x1b0f0476);
85 }
86
26a9daa6 87 if (mt76x02_ext_pa_enabled(dev, band))
5f0d10ce
LB		 88 pa_mode_adj = 0x04000000;
89 else
90 pa_mode_adj = 0;
91
92 mt76_wr(dev, MT_RF_PA_MODE_ADJ0, pa_mode_adj);
93 mt76_wr(dev, MT_RF_PA_MODE_ADJ1, pa_mode_adj);
94 }
95
96 mt76_wr(dev, MT_BB_PA_MODE_CFG0, pa_mode[0]);
97 mt76_wr(dev, MT_BB_PA_MODE_CFG1, pa_mode[1]);
98 mt76_wr(dev, MT_RF_PA_MODE_CFG0, pa_mode[0]);
99 mt76_wr(dev, MT_RF_PA_MODE_CFG1, pa_mode[1]);
100
26a9daa6 101 if (mt76x02_ext_pa_enabled(dev, band)) {
5f0d10ce
LB		 102 u32 val;
103
104 if (band == NL80211_BAND_2GHZ)
105 val = 0x3c3c023c;
106 else
107 val = 0x363c023c;
108
109 mt76_wr(dev, MT_TX0_RF_GAIN_CORR, val);
110 mt76_wr(dev, MT_TX1_RF_GAIN_CORR, val);
111 mt76_wr(dev, MT_TX_ALC_CFG_4, 0x00001818);
112 } else {
113 if (band == NL80211_BAND_2GHZ) {
114 u32 val = 0x0f3c3c3c;
115
116 mt76_wr(dev, MT_TX0_RF_GAIN_CORR, val);
117 mt76_wr(dev, MT_TX1_RF_GAIN_CORR, val);
118 mt76_wr(dev, MT_TX_ALC_CFG_4, 0x00000606);
119 } else {
120 mt76_wr(dev, MT_TX0_RF_GAIN_CORR, 0x383c023c);
121 mt76_wr(dev, MT_TX1_RF_GAIN_CORR, 0x24282e28);
122 mt76_wr(dev, MT_TX_ALC_CFG_4, 0);
123 }
124 }
125}
126EXPORT_SYMBOL_GPL(mt76x2_phy_set_txpower_regs);
127
5f0d10ce
LB		 128static int
129mt76x2_get_min_rate_power(struct mt76_rate_power *r)
130{
131 int i;
132 s8 ret = 0;
133
134 for (i = 0; i < sizeof(r->all); i++) {
135 if (!r->all[i])
136 continue;
137
138 if (ret)
139 ret = min(ret, r->all[i]);
140 else
141 ret = r->all[i];
142 }
143
144 return ret;
145}
146
e40803f2 147void mt76x2_phy_set_txpower(struct mt76x02_dev *dev)
5f0d10ce
LB		 148{
149 enum nl80211_chan_width width = dev->mt76.chandef.width;
150 struct ieee80211_channel *chan = dev->mt76.chandef.chan;
151 struct mt76x2_tx_power_info txp;
152 int txp_0, txp_1, delta = 0;
153 struct mt76_rate_power t = {};
154 int base_power, gain;
155
156 mt76x2_get_power_info(dev, &txp, chan);
157
158 if (width == NL80211_CHAN_WIDTH_40)
159 delta = txp.delta_bw40;
160 else if (width == NL80211_CHAN_WIDTH_80)
161 delta = txp.delta_bw80;
162
163 mt76x2_get_rate_power(dev, &t, chan);
b9f192b8
LB		 164 mt76x02_add_rate_power_offset(&t, txp.chain[0].target_power);
165 mt76x02_limit_rate_power(&t, dev->mt76.txpower_conf);
166 dev->mt76.txpower_cur = mt76x02_get_max_rate_power(&t);
5f0d10ce
LB		 167
168 base_power = mt76x2_get_min_rate_power(&t);
169 delta += base_power - txp.chain[0].target_power;
170 txp_0 = txp.chain[0].target_power + txp.chain[0].delta + delta;
171 txp_1 = txp.chain[1].target_power + txp.chain[1].delta + delta;
172
173 gain = min(txp_0, txp_1);
174 if (gain < 0) {
175 base_power -= gain;
176 txp_0 -= gain;
177 txp_1 -= gain;
178 } else if (gain > 0x2f) {
179 base_power -= gain - 0x2f;
180 txp_0 = 0x2f;
181 txp_1 = 0x2f;
182 }
183
b9f192b8 184 mt76x02_add_rate_power_offset(&t, -base_power);
5f0d10ce
LB		 185 dev->target_power = txp.chain[0].target_power;
186 dev->target_power_delta[0] = txp_0 - txp.chain[0].target_power;
187 dev->target_power_delta[1] = txp_1 - txp.chain[0].target_power;
b6862eff 188 dev->mt76.rate_power = t;
5f0d10ce 189
bfdff5d0 190 mt76x02_phy_set_txpower(dev, txp_0, txp_1);
5f0d10ce
LB		 191}
192EXPORT_SYMBOL_GPL(mt76x2_phy_set_txpower);
193
e40803f2 194void mt76x2_configure_tx_delay(struct mt76x02_dev *dev,
5f0d10ce
LB		 195 enum nl80211_band band, u8 bw)
196{
197 u32 cfg0, cfg1;
198
26a9daa6 199 if (mt76x02_ext_pa_enabled(dev, band)) {
5f0d10ce
LB		 200 cfg0 = bw ? 0x000b0c01 : 0x00101101;
201 cfg1 = 0x00011414;
202 } else {
203 cfg0 = bw ? 0x000b0b01 : 0x00101001;
204 cfg1 = 0x00021414;
205 }
206 mt76_wr(dev, MT_TX_SW_CFG0, cfg0);
207 mt76_wr(dev, MT_TX_SW_CFG1, cfg1);
208
209 mt76_rmw_field(dev, MT_XIFS_TIME_CFG, MT_XIFS_TIME_CFG_OFDM_SIFS, 15);
210}
211EXPORT_SYMBOL_GPL(mt76x2_configure_tx_delay);
212
4ece1e0a 213void mt76x2_phy_tssi_compensate(struct mt76x02_dev *dev)
8842d485
LB		 214{
215 struct ieee80211_channel *chan = dev->mt76.chandef.chan;
216 struct mt76x2_tx_power_info txp;
217 struct mt76x2_tssi_comp t = {};
218
219 if (!dev->cal.tssi_cal_done)
220 return;
221
222 if (!dev->cal.tssi_comp_pending) {
223 /* TSSI trigger */
224 t.cal_mode = BIT(0);
225 mt76x2_mcu_tssi_comp(dev, &t);
226 dev->cal.tssi_comp_pending = true;
227 } else {
228 if (mt76_rr(dev, MT_BBP(CORE, 34)) & BIT(4))
229 return;
230
231 dev->cal.tssi_comp_pending = false;
232 mt76x2_get_power_info(dev, &txp, chan);
233
26a9daa6 234 if (mt76x02_ext_pa_enabled(dev, chan->band))
8842d485
LB		 235 t.pa_mode = 1;
236
237 t.cal_mode = BIT(1);
238 t.slope0 = txp.chain[0].tssi_slope;
239 t.offset0 = txp.chain[0].tssi_offset;
240 t.slope1 = txp.chain[1].tssi_slope;
241 t.offset1 = txp.chain[1].tssi_offset;
242 mt76x2_mcu_tssi_comp(dev, &t);
243
1564fa92 244 if (t.pa_mode || dev->cal.dpd_cal_done || dev->ed_tx_blocked)
8842d485
LB		 245 return;
246
247 usleep_range(10000, 20000);
4ece1e0a 248 mt76x02_mcu_calibrate(dev, MCU_CAL_DPD, chan->hw_value);
8842d485
LB		 249 dev->cal.dpd_cal_done = true;
250 }
251}
252EXPORT_SYMBOL_GPL(mt76x2_phy_tssi_compensate);
989582e5 253
989582e5
LB		 254static void
255mt76x2_phy_set_gain_val(struct mt76x02_dev *dev)
256{
257 u32 val;
258 u8 gain_val[2];
259
260 gain_val[0] = dev->cal.agc_gain_cur[0] - dev->cal.agc_gain_adjust;
261 gain_val[1] = dev->cal.agc_gain_cur[1] - dev->cal.agc_gain_adjust;
262
45a042e3
FF		 263 val = 0x1836 << 16;
264 if (!mt76x2_has_ext_lna(dev) &&
265 dev->mt76.chandef.width >= NL80211_CHAN_WIDTH_40)
989582e5 266 val = 0x1e42 << 16;
45a042e3
FF		 267
268 if (mt76x2_has_ext_lna(dev) &&
269 dev->mt76.chandef.chan->band == NL80211_BAND_2GHZ &&
270 dev->mt76.chandef.width < NL80211_CHAN_WIDTH_40)
271 val = 0x0f36 << 16;
989582e5
LB		 272
273 val |= 0xf8;
274
275 mt76_wr(dev, MT_BBP(AGC, 8),
276 val | FIELD_PREP(MT_BBP_AGC_GAIN, gain_val[0]));
277 mt76_wr(dev, MT_BBP(AGC, 9),
278 val | FIELD_PREP(MT_BBP_AGC_GAIN, gain_val[1]));
279
280 if (dev->mt76.chandef.chan->flags & IEEE80211_CHAN_RADAR)
801ccc8a 281 mt76x02_phy_dfs_adjust_agc(dev);
989582e5
LB		 282}
283
284void mt76x2_phy_update_channel_gain(struct mt76x02_dev *dev)
285{
286 u8 *gain = dev->cal.agc_gain_init;
287 u8 low_gain_delta, gain_delta;
b8cfd87a 288 u32 agc_35, agc_37;
989582e5
LB		 289 bool gain_change;
290 int low_gain;
291 u32 val;
292
ef13edc0
FF		 293 dev->cal.avg_rssi_all = mt76_get_min_avg_rssi(&dev->mt76);
294 if (!dev->cal.avg_rssi_all)
295 dev->cal.avg_rssi_all = -75;
989582e5
LB		 296
297 low_gain = (dev->cal.avg_rssi_all > mt76x02_get_rssi_gain_thresh(dev)) +
298 (dev->cal.avg_rssi_all > mt76x02_get_low_rssi_gain_thresh(dev));
299
4784a3cc
SG		 300 gain_change = dev->cal.low_gain < 0 ||
301 (dev->cal.low_gain & 2) ^ (low_gain & 2);
989582e5
LB		 302 dev->cal.low_gain = low_gain;
303
304 if (!gain_change) {
305 if (mt76x02_phy_adjust_vga_gain(dev))
306 mt76x2_phy_set_gain_val(dev);
307 return;
308 }
309
310 if (dev->mt76.chandef.width == NL80211_CHAN_WIDTH_80) {
311 mt76_wr(dev, MT_BBP(RXO, 14), 0x00560211);
312 val = mt76_rr(dev, MT_BBP(AGC, 26)) & ~0xf;
313 if (low_gain == 2)
314 val |= 0x3;
315 else
316 val |= 0x5;
317 mt76_wr(dev, MT_BBP(AGC, 26), val);
318 } else {
319 mt76_wr(dev, MT_BBP(RXO, 14), 0x00560423);
320 }
321
322 if (mt76x2_has_ext_lna(dev))
323 low_gain_delta = 10;
324 else
325 low_gain_delta = 14;
326
b8cfd87a
FF		 327 agc_37 = 0x2121262c;
328 if (dev->mt76.chandef.chan->band == NL80211_BAND_2GHZ)
329 agc_35 = 0x11111516;
330 else if (low_gain == 2)
331 agc_35 = agc_37 = 0x08080808;
332 else if (dev->mt76.chandef.width == NL80211_CHAN_WIDTH_80)
333 agc_35 = 0x10101014;
334 else
335 agc_35 = 0x11111116;
336
989582e5
LB		 337 if (low_gain == 2) {
338 mt76_wr(dev, MT_BBP(RXO, 18), 0xf000a990);
339 mt76_wr(dev, MT_BBP(AGC, 35), 0x08080808);
340 mt76_wr(dev, MT_BBP(AGC, 37), 0x08080808);
341 gain_delta = low_gain_delta;
342 dev->cal.agc_gain_adjust = 0;
343 } else {
344 mt76_wr(dev, MT_BBP(RXO, 18), 0xf000a991);
989582e5
LB		 345 gain_delta = 0;
346 dev->cal.agc_gain_adjust = low_gain_delta;
347 }
348
b8cfd87a
FF		 349 mt76_wr(dev, MT_BBP(AGC, 35), agc_35);
350 mt76_wr(dev, MT_BBP(AGC, 37), agc_37);
351
989582e5
LB		 352 dev->cal.agc_gain_cur[0] = gain[0] - gain_delta;
353 dev->cal.agc_gain_cur[1] = gain[1] - gain_delta;
354 mt76x2_phy_set_gain_val(dev);
355
356 /* clear false CCA counters */
357 mt76_rr(dev, MT_RX_STAT_1);
358}
359EXPORT_SYMBOL_GPL(mt76x2_phy_update_channel_gain);
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git