1 // SPDX-License-Identifier: ISC 2 /* 3 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> 4 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> 5 */ 6 7 #include "mt76x2.h" 8 #include "eeprom.h" 9 #include "mcu.h" 10 #include "../mt76x02_phy.h" 11 12 static void 13 mt76x2_adjust_high_lna_gain(struct mt76x02_dev *dev, int reg, s8 offset) 14 { 15 s8 gain; 16 17 gain = FIELD_GET(MT_BBP_AGC_LNA_HIGH_GAIN, 18 mt76_rr(dev, MT_BBP(AGC, reg))); 19 gain -= offset / 2; 20 mt76_rmw_field(dev, MT_BBP(AGC, reg), MT_BBP_AGC_LNA_HIGH_GAIN, gain); 21 } 22 23 static void 24 mt76x2_adjust_agc_gain(struct mt76x02_dev *dev, int reg, s8 offset) 25 { 26 s8 gain; 27 28 gain = FIELD_GET(MT_BBP_AGC_GAIN, mt76_rr(dev, MT_BBP(AGC, reg))); 29 gain += offset; 30 mt76_rmw_field(dev, MT_BBP(AGC, reg), MT_BBP_AGC_GAIN, gain); 31 } 32 33 void mt76x2_apply_gain_adj(struct mt76x02_dev *dev) 34 { 35 s8 *gain_adj = dev->cal.rx.high_gain; 36 37 mt76x2_adjust_high_lna_gain(dev, 4, gain_adj[0]); 38 mt76x2_adjust_high_lna_gain(dev, 5, gain_adj[1]); 39 40 mt76x2_adjust_agc_gain(dev, 8, gain_adj[0]); 41 mt76x2_adjust_agc_gain(dev, 9, gain_adj[1]); 42 } 43 EXPORT_SYMBOL_GPL(mt76x2_apply_gain_adj); 44 45 void mt76x2_phy_set_txpower_regs(struct mt76x02_dev *dev, 46 enum nl80211_band band) 47 { 48 u32 pa_mode[2]; 49 u32 pa_mode_adj; 50 51 if (band == NL80211_BAND_2GHZ) { 52 pa_mode[0] = 0x010055ff; 53 pa_mode[1] = 0x00550055; 54 55 mt76_wr(dev, MT_TX_ALC_CFG_2, 0x35160a00); 56 mt76_wr(dev, MT_TX_ALC_CFG_3, 0x35160a06); 57 58 if (mt76x02_ext_pa_enabled(dev, band)) { 59 mt76_wr(dev, MT_RF_PA_MODE_ADJ0, 0x0000ec00); 60 mt76_wr(dev, MT_RF_PA_MODE_ADJ1, 0x0000ec00); 61 } else { 62 mt76_wr(dev, MT_RF_PA_MODE_ADJ0, 0xf4000200); 63 mt76_wr(dev, MT_RF_PA_MODE_ADJ1, 0xfa000200); 64 } 65 } else { 66 pa_mode[0] = 0x0000ffff; 67 pa_mode[1] = 0x00ff00ff; 68 69 if (mt76x02_ext_pa_enabled(dev, band)) { 70 mt76_wr(dev, MT_TX_ALC_CFG_2, 0x2f0f0400); 71 mt76_wr(dev, MT_TX_ALC_CFG_3, 0x2f0f0476); 72 } else { 73 mt76_wr(dev, MT_TX_ALC_CFG_2, 0x1b0f0400); 74 mt76_wr(dev, MT_TX_ALC_CFG_3, 0x1b0f0476); 75 } 76 77 if (mt76x02_ext_pa_enabled(dev, band)) 78 pa_mode_adj = 0x04000000; 79 else 80 pa_mode_adj = 0; 81 82 mt76_wr(dev, MT_RF_PA_MODE_ADJ0, pa_mode_adj); 83 mt76_wr(dev, MT_RF_PA_MODE_ADJ1, pa_mode_adj); 84 } 85 86 mt76_wr(dev, MT_BB_PA_MODE_CFG0, pa_mode[0]); 87 mt76_wr(dev, MT_BB_PA_MODE_CFG1, pa_mode[1]); 88 mt76_wr(dev, MT_RF_PA_MODE_CFG0, pa_mode[0]); 89 mt76_wr(dev, MT_RF_PA_MODE_CFG1, pa_mode[1]); 90 91 if (mt76x02_ext_pa_enabled(dev, band)) { 92 u32 val; 93 94 if (band == NL80211_BAND_2GHZ) 95 val = 0x3c3c023c; 96 else 97 val = 0x363c023c; 98 99 mt76_wr(dev, MT_TX0_RF_GAIN_CORR, val); 100 mt76_wr(dev, MT_TX1_RF_GAIN_CORR, val); 101 mt76_wr(dev, MT_TX_ALC_CFG_4, 0x00001818); 102 } else { 103 if (band == NL80211_BAND_2GHZ) { 104 u32 val = 0x0f3c3c3c; 105 106 mt76_wr(dev, MT_TX0_RF_GAIN_CORR, val); 107 mt76_wr(dev, MT_TX1_RF_GAIN_CORR, val); 108 mt76_wr(dev, MT_TX_ALC_CFG_4, 0x00000606); 109 } else { 110 mt76_wr(dev, MT_TX0_RF_GAIN_CORR, 0x383c023c); 111 mt76_wr(dev, MT_TX1_RF_GAIN_CORR, 0x24282e28); 112 mt76_wr(dev, MT_TX_ALC_CFG_4, 0); 113 } 114 } 115 } 116 EXPORT_SYMBOL_GPL(mt76x2_phy_set_txpower_regs); 117 118 static int 119 mt76x2_get_min_rate_power(struct mt76_rate_power *r) 120 { 121 int i; 122 s8 ret = 0; 123 124 for (i = 0; i < sizeof(r->all); i++) { 125 if (!r->all[i]) 126 continue; 127 128 if (ret) 129 ret = min(ret, r->all[i]); 130 else 131 ret = r->all[i]; 132 } 133 134 return ret; 135 } 136 137 void mt76x2_phy_set_txpower(struct mt76x02_dev *dev) 138 { 139 enum nl80211_chan_width width = dev->mt76.chandef.width; 140 struct ieee80211_channel *chan = dev->mt76.chandef.chan; 141 struct mt76x2_tx_power_info txp; 142 int txp_0, txp_1, delta = 0; 143 struct mt76_rate_power t = {}; 144 int base_power, gain; 145 146 mt76x2_get_power_info(dev, &txp, chan); 147 148 if (width == NL80211_CHAN_WIDTH_40) 149 delta = txp.delta_bw40; 150 else if (width == NL80211_CHAN_WIDTH_80) 151 delta = txp.delta_bw80; 152 153 mt76x2_get_rate_power(dev, &t, chan); 154 mt76x02_add_rate_power_offset(&t, txp.target_power + delta); 155 mt76x02_limit_rate_power(&t, dev->mt76.txpower_conf); 156 dev->mt76.txpower_cur = mt76x02_get_max_rate_power(&t); 157 158 base_power = mt76x2_get_min_rate_power(&t); 159 delta = base_power - txp.target_power; 160 txp_0 = txp.chain[0].target_power + txp.chain[0].delta + delta; 161 txp_1 = txp.chain[1].target_power + txp.chain[1].delta + delta; 162 163 gain = min(txp_0, txp_1); 164 if (gain < 0) { 165 base_power -= gain; 166 txp_0 -= gain; 167 txp_1 -= gain; 168 } else if (gain > 0x2f) { 169 base_power -= gain - 0x2f; 170 txp_0 = 0x2f; 171 txp_1 = 0x2f; 172 } 173 174 mt76x02_add_rate_power_offset(&t, -base_power); 175 dev->target_power = txp.target_power; 176 dev->target_power_delta[0] = txp_0 - txp.chain[0].target_power; 177 dev->target_power_delta[1] = txp_1 - txp.chain[0].target_power; 178 dev->mt76.rate_power = t; 179 180 mt76x02_phy_set_txpower(dev, txp_0, txp_1); 181 } 182 EXPORT_SYMBOL_GPL(mt76x2_phy_set_txpower); 183 184 void mt76x2_configure_tx_delay(struct mt76x02_dev *dev, 185 enum nl80211_band band, u8 bw) 186 { 187 u32 cfg0, cfg1; 188 189 if (mt76x02_ext_pa_enabled(dev, band)) { 190 cfg0 = bw ? 0x000b0c01 : 0x00101101; 191 cfg1 = 0x00011414; 192 } else { 193 cfg0 = bw ? 0x000b0b01 : 0x00101001; 194 cfg1 = 0x00021414; 195 } 196 mt76_wr(dev, MT_TX_SW_CFG0, cfg0); 197 mt76_wr(dev, MT_TX_SW_CFG1, cfg1); 198 199 mt76_rmw_field(dev, MT_XIFS_TIME_CFG, MT_XIFS_TIME_CFG_OFDM_SIFS, 15); 200 } 201 EXPORT_SYMBOL_GPL(mt76x2_configure_tx_delay); 202 203 void mt76x2_phy_tssi_compensate(struct mt76x02_dev *dev) 204 { 205 struct ieee80211_channel *chan = dev->mt76.chandef.chan; 206 struct mt76x2_tx_power_info txp; 207 struct mt76x2_tssi_comp t = {}; 208 209 if (!dev->cal.tssi_cal_done) 210 return; 211 212 if (!dev->cal.tssi_comp_pending) { 213 /* TSSI trigger */ 214 t.cal_mode = BIT(0); 215 mt76x2_mcu_tssi_comp(dev, &t); 216 dev->cal.tssi_comp_pending = true; 217 } else { 218 if (mt76_rr(dev, MT_BBP(CORE, 34)) & BIT(4)) 219 return; 220 221 dev->cal.tssi_comp_pending = false; 222 mt76x2_get_power_info(dev, &txp, chan); 223 224 if (mt76x02_ext_pa_enabled(dev, chan->band)) 225 t.pa_mode = 1; 226 227 t.cal_mode = BIT(1); 228 t.slope0 = txp.chain[0].tssi_slope; 229 t.offset0 = txp.chain[0].tssi_offset; 230 t.slope1 = txp.chain[1].tssi_slope; 231 t.offset1 = txp.chain[1].tssi_offset; 232 mt76x2_mcu_tssi_comp(dev, &t); 233 234 if (t.pa_mode || dev->cal.dpd_cal_done || dev->ed_tx_blocked) 235 return; 236 237 usleep_range(10000, 20000); 238 mt76x02_mcu_calibrate(dev, MCU_CAL_DPD, chan->hw_value); 239 dev->cal.dpd_cal_done = true; 240 } 241 } 242 EXPORT_SYMBOL_GPL(mt76x2_phy_tssi_compensate); 243 244 static void 245 mt76x2_phy_set_gain_val(struct mt76x02_dev *dev) 246 { 247 u32 val; 248 u8 gain_val[2]; 249 250 gain_val[0] = dev->cal.agc_gain_cur[0] - dev->cal.agc_gain_adjust; 251 gain_val[1] = dev->cal.agc_gain_cur[1] - dev->cal.agc_gain_adjust; 252 253 val = 0x1836 << 16; 254 if (!mt76x2_has_ext_lna(dev) && 255 dev->mt76.chandef.width >= NL80211_CHAN_WIDTH_40) 256 val = 0x1e42 << 16; 257 258 if (mt76x2_has_ext_lna(dev) && 259 dev->mt76.chandef.chan->band == NL80211_BAND_2GHZ && 260 dev->mt76.chandef.width < NL80211_CHAN_WIDTH_40) 261 val = 0x0f36 << 16; 262 263 val |= 0xf8; 264 265 mt76_wr(dev, MT_BBP(AGC, 8), 266 val | FIELD_PREP(MT_BBP_AGC_GAIN, gain_val[0])); 267 mt76_wr(dev, MT_BBP(AGC, 9), 268 val | FIELD_PREP(MT_BBP_AGC_GAIN, gain_val[1])); 269 270 if (dev->mt76.chandef.chan->flags & IEEE80211_CHAN_RADAR) 271 mt76x02_phy_dfs_adjust_agc(dev); 272 } 273 274 void mt76x2_phy_update_channel_gain(struct mt76x02_dev *dev) 275 { 276 u8 *gain = dev->cal.agc_gain_init; 277 u8 low_gain_delta, gain_delta; 278 u32 agc_35, agc_37; 279 bool gain_change; 280 int low_gain; 281 u32 val; 282 283 dev->cal.avg_rssi_all = mt76_get_min_avg_rssi(&dev->mt76); 284 if (!dev->cal.avg_rssi_all) 285 dev->cal.avg_rssi_all = -75; 286 287 low_gain = (dev->cal.avg_rssi_all > mt76x02_get_rssi_gain_thresh(dev)) + 288 (dev->cal.avg_rssi_all > mt76x02_get_low_rssi_gain_thresh(dev)); 289 290 gain_change = dev->cal.low_gain < 0 || 291 (dev->cal.low_gain & 2) ^ (low_gain & 2); 292 dev->cal.low_gain = low_gain; 293 294 if (!gain_change) { 295 if (mt76x02_phy_adjust_vga_gain(dev)) 296 mt76x2_phy_set_gain_val(dev); 297 return; 298 } 299 300 if (dev->mt76.chandef.width == NL80211_CHAN_WIDTH_80) { 301 mt76_wr(dev, MT_BBP(RXO, 14), 0x00560211); 302 val = mt76_rr(dev, MT_BBP(AGC, 26)) & ~0xf; 303 if (low_gain == 2) 304 val |= 0x3; 305 else 306 val |= 0x5; 307 mt76_wr(dev, MT_BBP(AGC, 26), val); 308 } else { 309 mt76_wr(dev, MT_BBP(RXO, 14), 0x00560423); 310 } 311 312 if (mt76x2_has_ext_lna(dev)) 313 low_gain_delta = 10; 314 else 315 low_gain_delta = 14; 316 317 agc_37 = 0x2121262c; 318 if (dev->mt76.chandef.chan->band == NL80211_BAND_2GHZ) 319 agc_35 = 0x11111516; 320 else if (low_gain == 2) 321 agc_35 = agc_37 = 0x08080808; 322 else if (dev->mt76.chandef.width == NL80211_CHAN_WIDTH_80) 323 agc_35 = 0x10101014; 324 else 325 agc_35 = 0x11111116; 326 327 if (low_gain == 2) { 328 mt76_wr(dev, MT_BBP(RXO, 18), 0xf000a990); 329 mt76_wr(dev, MT_BBP(AGC, 35), 0x08080808); 330 mt76_wr(dev, MT_BBP(AGC, 37), 0x08080808); 331 gain_delta = low_gain_delta; 332 dev->cal.agc_gain_adjust = 0; 333 } else { 334 mt76_wr(dev, MT_BBP(RXO, 18), 0xf000a991); 335 gain_delta = 0; 336 dev->cal.agc_gain_adjust = low_gain_delta; 337 } 338 339 mt76_wr(dev, MT_BBP(AGC, 35), agc_35); 340 mt76_wr(dev, MT_BBP(AGC, 37), agc_37); 341 342 dev->cal.agc_gain_cur[0] = gain[0] - gain_delta; 343 dev->cal.agc_gain_cur[1] = gain[1] - gain_delta; 344 mt76x2_phy_set_gain_val(dev); 345 346 /* clear false CCA counters */ 347 mt76_rr(dev, MT_RX_STAT_1); 348 } 349 EXPORT_SYMBOL_GPL(mt76x2_phy_update_channel_gain); 350