11613c621SLorenzo Bianconi /* 21613c621SLorenzo Bianconi * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> 31613c621SLorenzo Bianconi * 41613c621SLorenzo Bianconi * Permission to use, copy, modify, and/or distribute this software for any 51613c621SLorenzo Bianconi * purpose with or without fee is hereby granted, provided that the above 61613c621SLorenzo Bianconi * copyright notice and this permission notice appear in all copies. 71613c621SLorenzo Bianconi * 81613c621SLorenzo Bianconi * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 91613c621SLorenzo Bianconi * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 101613c621SLorenzo Bianconi * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 111613c621SLorenzo Bianconi * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 121613c621SLorenzo Bianconi * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 131613c621SLorenzo Bianconi * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 141613c621SLorenzo Bianconi * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 151613c621SLorenzo Bianconi */ 161613c621SLorenzo Bianconi 171613c621SLorenzo Bianconi #include "mt76x2u.h" 181613c621SLorenzo Bianconi #include "eeprom.h" 191613c621SLorenzo Bianconi 201613c621SLorenzo Bianconi void mt76x2u_phy_channel_calibrate(struct mt76x2_dev *dev) 211613c621SLorenzo Bianconi { 221613c621SLorenzo Bianconi struct ieee80211_channel *chan = dev->mt76.chandef.chan; 231613c621SLorenzo Bianconi bool is_5ghz = chan->band == NL80211_BAND_5GHZ; 241613c621SLorenzo Bianconi 251613c621SLorenzo Bianconi if (mt76x2_channel_silent(dev)) 261613c621SLorenzo Bianconi return; 271613c621SLorenzo Bianconi 281613c621SLorenzo Bianconi mt76x2u_mac_stop(dev); 291613c621SLorenzo Bianconi 301613c621SLorenzo Bianconi if (is_5ghz) 311613c621SLorenzo Bianconi mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_LC, 0, false); 321613c621SLorenzo Bianconi 331613c621SLorenzo Bianconi mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_TX_LOFT, is_5ghz, false); 341613c621SLorenzo Bianconi mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_TXIQ, is_5ghz, false); 351613c621SLorenzo Bianconi mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_RXIQC_FI, is_5ghz, false); 361613c621SLorenzo Bianconi mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_TEMP_SENSOR, 0, false); 371613c621SLorenzo Bianconi 381613c621SLorenzo Bianconi mt76x2u_mac_resume(dev); 391613c621SLorenzo Bianconi } 401613c621SLorenzo Bianconi 411613c621SLorenzo Bianconi static void 421613c621SLorenzo Bianconi mt76x2u_phy_update_channel_gain(struct mt76x2_dev *dev) 431613c621SLorenzo Bianconi { 441613c621SLorenzo Bianconi u8 channel = dev->mt76.chandef.chan->hw_value; 451613c621SLorenzo Bianconi int freq, freq1; 461613c621SLorenzo Bianconi u32 false_cca; 471613c621SLorenzo Bianconi 481613c621SLorenzo Bianconi freq = dev->mt76.chandef.chan->center_freq; 491613c621SLorenzo Bianconi freq1 = dev->mt76.chandef.center_freq1; 501613c621SLorenzo Bianconi 511613c621SLorenzo Bianconi switch (dev->mt76.chandef.width) { 521613c621SLorenzo Bianconi case NL80211_CHAN_WIDTH_80: { 531613c621SLorenzo Bianconi int ch_group_index; 541613c621SLorenzo Bianconi 551613c621SLorenzo Bianconi ch_group_index = (freq - freq1 + 30) / 20; 561613c621SLorenzo Bianconi if (WARN_ON(ch_group_index < 0 || ch_group_index > 3)) 571613c621SLorenzo Bianconi ch_group_index = 0; 581613c621SLorenzo Bianconi channel += 6 - ch_group_index * 4; 591613c621SLorenzo Bianconi break; 601613c621SLorenzo Bianconi } 611613c621SLorenzo Bianconi case NL80211_CHAN_WIDTH_40: 621613c621SLorenzo Bianconi if (freq1 > freq) 631613c621SLorenzo Bianconi channel += 2; 641613c621SLorenzo Bianconi else 651613c621SLorenzo Bianconi channel -= 2; 661613c621SLorenzo Bianconi break; 671613c621SLorenzo Bianconi default: 681613c621SLorenzo Bianconi break; 691613c621SLorenzo Bianconi } 701613c621SLorenzo Bianconi 711613c621SLorenzo Bianconi dev->cal.avg_rssi_all = mt76x2_phy_get_min_avg_rssi(dev); 721613c621SLorenzo Bianconi false_cca = FIELD_GET(MT_RX_STAT_1_CCA_ERRORS, 731613c621SLorenzo Bianconi mt76_rr(dev, MT_RX_STAT_1)); 741613c621SLorenzo Bianconi 751613c621SLorenzo Bianconi mt76x2u_mcu_set_dynamic_vga(dev, channel, false, false, 761613c621SLorenzo Bianconi dev->cal.avg_rssi_all, false_cca); 771613c621SLorenzo Bianconi } 781613c621SLorenzo Bianconi 791613c621SLorenzo Bianconi void mt76x2u_phy_calibrate(struct work_struct *work) 801613c621SLorenzo Bianconi { 811613c621SLorenzo Bianconi struct mt76x2_dev *dev; 821613c621SLorenzo Bianconi 831613c621SLorenzo Bianconi dev = container_of(work, struct mt76x2_dev, cal_work.work); 841613c621SLorenzo Bianconi mt76x2_phy_tssi_compensate(dev, false); 851613c621SLorenzo Bianconi mt76x2u_phy_update_channel_gain(dev); 861613c621SLorenzo Bianconi 871613c621SLorenzo Bianconi ieee80211_queue_delayed_work(mt76_hw(dev), &dev->cal_work, 881613c621SLorenzo Bianconi MT_CALIBRATE_INTERVAL); 891613c621SLorenzo Bianconi } 901613c621SLorenzo Bianconi 911613c621SLorenzo Bianconi int mt76x2u_phy_set_channel(struct mt76x2_dev *dev, 921613c621SLorenzo Bianconi struct cfg80211_chan_def *chandef) 931613c621SLorenzo Bianconi { 941613c621SLorenzo Bianconi u32 ext_cca_chan[4] = { 951613c621SLorenzo Bianconi [0] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 0) | 961613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 1) | 971613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 2) | 981613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 3) | 991613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(0)), 1001613c621SLorenzo Bianconi [1] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 1) | 1011613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 0) | 1021613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 2) | 1031613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 3) | 1041613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(1)), 1051613c621SLorenzo Bianconi [2] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 2) | 1061613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 3) | 1071613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 1) | 1081613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 0) | 1091613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(2)), 1101613c621SLorenzo Bianconi [3] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 3) | 1111613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 2) | 1121613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 1) | 1131613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 0) | 1141613c621SLorenzo Bianconi FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(3)), 1151613c621SLorenzo Bianconi }; 1161613c621SLorenzo Bianconi bool scan = test_bit(MT76_SCANNING, &dev->mt76.state); 1171613c621SLorenzo Bianconi struct ieee80211_channel *chan = chandef->chan; 1181613c621SLorenzo Bianconi u8 channel = chan->hw_value, bw, bw_index; 1191613c621SLorenzo Bianconi int ch_group_index, freq, freq1, ret; 1201613c621SLorenzo Bianconi 1211613c621SLorenzo Bianconi dev->cal.channel_cal_done = false; 1221613c621SLorenzo Bianconi freq = chandef->chan->center_freq; 1231613c621SLorenzo Bianconi freq1 = chandef->center_freq1; 1241613c621SLorenzo Bianconi 1251613c621SLorenzo Bianconi switch (chandef->width) { 1261613c621SLorenzo Bianconi case NL80211_CHAN_WIDTH_40: 1271613c621SLorenzo Bianconi bw = 1; 1281613c621SLorenzo Bianconi if (freq1 > freq) { 1291613c621SLorenzo Bianconi bw_index = 1; 1301613c621SLorenzo Bianconi ch_group_index = 0; 1311613c621SLorenzo Bianconi } else { 1321613c621SLorenzo Bianconi bw_index = 3; 1331613c621SLorenzo Bianconi ch_group_index = 1; 1341613c621SLorenzo Bianconi } 1351613c621SLorenzo Bianconi channel += 2 - ch_group_index * 4; 1361613c621SLorenzo Bianconi break; 1371613c621SLorenzo Bianconi case NL80211_CHAN_WIDTH_80: 1381613c621SLorenzo Bianconi ch_group_index = (freq - freq1 + 30) / 20; 1391613c621SLorenzo Bianconi if (WARN_ON(ch_group_index < 0 || ch_group_index > 3)) 1401613c621SLorenzo Bianconi ch_group_index = 0; 1411613c621SLorenzo Bianconi bw = 2; 1421613c621SLorenzo Bianconi bw_index = ch_group_index; 1431613c621SLorenzo Bianconi channel += 6 - ch_group_index * 4; 1441613c621SLorenzo Bianconi break; 1451613c621SLorenzo Bianconi default: 1461613c621SLorenzo Bianconi bw = 0; 1471613c621SLorenzo Bianconi bw_index = 0; 1481613c621SLorenzo Bianconi ch_group_index = 0; 1491613c621SLorenzo Bianconi break; 1501613c621SLorenzo Bianconi } 1511613c621SLorenzo Bianconi 1521613c621SLorenzo Bianconi mt76x2_read_rx_gain(dev); 1531613c621SLorenzo Bianconi mt76x2_phy_set_txpower_regs(dev, chan->band); 1541613c621SLorenzo Bianconi mt76x2_configure_tx_delay(dev, chan->band, bw); 1551613c621SLorenzo Bianconi mt76x2_phy_set_txpower(dev); 1561613c621SLorenzo Bianconi 1571613c621SLorenzo Bianconi mt76x2_phy_set_band(dev, chan->band, ch_group_index & 1); 1581613c621SLorenzo Bianconi mt76x2_phy_set_bw(dev, chandef->width, ch_group_index); 1591613c621SLorenzo Bianconi 1601613c621SLorenzo Bianconi mt76_rmw(dev, MT_EXT_CCA_CFG, 1611613c621SLorenzo Bianconi (MT_EXT_CCA_CFG_CCA0 | 1621613c621SLorenzo Bianconi MT_EXT_CCA_CFG_CCA1 | 1631613c621SLorenzo Bianconi MT_EXT_CCA_CFG_CCA2 | 1641613c621SLorenzo Bianconi MT_EXT_CCA_CFG_CCA3 | 1651613c621SLorenzo Bianconi MT_EXT_CCA_CFG_CCA_MASK), 1661613c621SLorenzo Bianconi ext_cca_chan[ch_group_index]); 1671613c621SLorenzo Bianconi 1681613c621SLorenzo Bianconi ret = mt76x2_mcu_set_channel(dev, channel, bw, bw_index, scan); 1691613c621SLorenzo Bianconi if (ret) 1701613c621SLorenzo Bianconi return ret; 1711613c621SLorenzo Bianconi 1721613c621SLorenzo Bianconi mt76x2_mcu_init_gain(dev, channel, dev->cal.rx.mcu_gain, true); 1731613c621SLorenzo Bianconi 1741613c621SLorenzo Bianconi /* Enable LDPC Rx */ 1751613c621SLorenzo Bianconi if (mt76xx_rev(dev) >= MT76XX_REV_E3) 1761613c621SLorenzo Bianconi mt76_set(dev, MT_BBP(RXO, 13), BIT(10)); 1771613c621SLorenzo Bianconi 1781613c621SLorenzo Bianconi if (!dev->cal.init_cal_done) { 1791613c621SLorenzo Bianconi u8 val = mt76x02_eeprom_get(&dev->mt76, MT_EE_BT_RCAL_RESULT); 1801613c621SLorenzo Bianconi 1811613c621SLorenzo Bianconi if (val != 0xff) 1821613c621SLorenzo Bianconi mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_R, 1831613c621SLorenzo Bianconi 0, false); 1841613c621SLorenzo Bianconi } 1851613c621SLorenzo Bianconi 1861613c621SLorenzo Bianconi mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_RXDCOC, channel, false); 1871613c621SLorenzo Bianconi 1881613c621SLorenzo Bianconi /* Rx LPF calibration */ 1891613c621SLorenzo Bianconi if (!dev->cal.init_cal_done) 1901613c621SLorenzo Bianconi mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_RC, 0, false); 1911613c621SLorenzo Bianconi dev->cal.init_cal_done = true; 1921613c621SLorenzo Bianconi 1931613c621SLorenzo Bianconi mt76_wr(dev, MT_BBP(AGC, 61), 0xff64a4e2); 1941613c621SLorenzo Bianconi mt76_wr(dev, MT_BBP(AGC, 7), 0x08081010); 1951613c621SLorenzo Bianconi mt76_wr(dev, MT_BBP(AGC, 11), 0x00000404); 1961613c621SLorenzo Bianconi mt76_wr(dev, MT_BBP(AGC, 2), 0x00007070); 1971613c621SLorenzo Bianconi mt76_wr(dev, MT_TXOP_CTRL_CFG, 0X04101b3f); 1981613c621SLorenzo Bianconi 1991613c621SLorenzo Bianconi mt76_set(dev, MT_BBP(TXO, 4), BIT(25)); 2001613c621SLorenzo Bianconi mt76_set(dev, MT_BBP(RXO, 13), BIT(8)); 2011613c621SLorenzo Bianconi 2021613c621SLorenzo Bianconi if (scan) 2031613c621SLorenzo Bianconi return 0; 2041613c621SLorenzo Bianconi 2051613c621SLorenzo Bianconi if (mt76x02_tssi_enabled(&dev->mt76)) { 2061613c621SLorenzo Bianconi /* init default values for temp compensation */ 2071613c621SLorenzo Bianconi mt76_rmw_field(dev, MT_TX_ALC_CFG_1, MT_TX_ALC_CFG_1_TEMP_COMP, 2081613c621SLorenzo Bianconi 0x38); 2091613c621SLorenzo Bianconi mt76_rmw_field(dev, MT_TX_ALC_CFG_2, MT_TX_ALC_CFG_2_TEMP_COMP, 2101613c621SLorenzo Bianconi 0x38); 2111613c621SLorenzo Bianconi 2121613c621SLorenzo Bianconi /* init tssi calibration */ 2131613c621SLorenzo Bianconi if (!mt76x2_channel_silent(dev)) { 2141613c621SLorenzo Bianconi struct ieee80211_channel *chan; 2151613c621SLorenzo Bianconi u32 flag = 0; 2161613c621SLorenzo Bianconi 2171613c621SLorenzo Bianconi chan = dev->mt76.chandef.chan; 2181613c621SLorenzo Bianconi if (chan->band == NL80211_BAND_5GHZ) 2191613c621SLorenzo Bianconi flag |= BIT(0); 2201613c621SLorenzo Bianconi if (mt76x02_ext_pa_enabled(&dev->mt76, chan->band)) 2211613c621SLorenzo Bianconi flag |= BIT(8); 2221613c621SLorenzo Bianconi mt76x02_mcu_calibrate(&dev->mt76, MCU_CAL_TSSI, 2231613c621SLorenzo Bianconi flag, false); 2241613c621SLorenzo Bianconi dev->cal.tssi_cal_done = true; 2251613c621SLorenzo Bianconi } 2261613c621SLorenzo Bianconi } 2271613c621SLorenzo Bianconi 2281613c621SLorenzo Bianconi ieee80211_queue_delayed_work(mt76_hw(dev), &dev->cal_work, 2291613c621SLorenzo Bianconi MT_CALIBRATE_INTERVAL); 2301613c621SLorenzo Bianconi return 0; 2311613c621SLorenzo Bianconi } 232