2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <linux/delay.h>
21 #include "../mt76x02_phy.h"
24 mt76x2_phy_tssi_init_cal(struct mt76x02_dev *dev)
26 struct ieee80211_channel *chan = dev->mt76.chandef.chan;
29 if (!mt76x2_tssi_enabled(dev))
32 if (mt76x2_channel_silent(dev))
35 if (chan->band == NL80211_BAND_5GHZ)
38 if (mt76x02_ext_pa_enabled(dev, chan->band))
41 mt76x02_mcu_calibrate(dev, MCU_CAL_TSSI, flag);
42 dev->cal.tssi_cal_done = true;
47 mt76x2_phy_channel_calibrate(struct mt76x02_dev *dev, bool mac_stopped)
49 struct ieee80211_channel *chan = dev->mt76.chandef.chan;
50 bool is_5ghz = chan->band == NL80211_BAND_5GHZ;
52 if (dev->cal.channel_cal_done)
55 if (mt76x2_channel_silent(dev))
58 if (!dev->cal.tssi_cal_done)
59 mt76x2_phy_tssi_init_cal(dev);
62 mt76x2_mac_stop(dev, false);
65 mt76x02_mcu_calibrate(dev, MCU_CAL_LC, 0);
67 mt76x02_mcu_calibrate(dev, MCU_CAL_TX_LOFT, is_5ghz);
68 mt76x02_mcu_calibrate(dev, MCU_CAL_TXIQ, is_5ghz);
69 mt76x02_mcu_calibrate(dev, MCU_CAL_RXIQC_FI, is_5ghz);
70 mt76x02_mcu_calibrate(dev, MCU_CAL_TEMP_SENSOR, 0);
71 mt76x02_mcu_calibrate(dev, MCU_CAL_TX_SHAPING, 0);
74 mt76x2_mac_resume(dev);
76 mt76x2_apply_gain_adj(dev);
78 dev->cal.channel_cal_done = true;
81 void mt76x2_phy_set_antenna(struct mt76x02_dev *dev)
85 val = mt76_rr(dev, MT_BBP(AGC, 0));
86 val &= ~(BIT(4) | BIT(1));
87 switch (dev->mt76.antenna_mask) {
89 /* disable mac DAC control */
90 mt76_clear(dev, MT_BBP(IBI, 9), BIT(11));
91 mt76_clear(dev, MT_BBP(TXBE, 5), 3);
92 mt76_rmw_field(dev, MT_TX_PIN_CFG, MT_TX_PIN_CFG_TXANT, 0x3);
93 mt76_rmw_field(dev, MT_BBP(CORE, 32), GENMASK(21, 20), 2);
95 mt76_rmw_field(dev, MT_BBP(CORE, 33), GENMASK(12, 9), 4);
97 val &= ~(BIT(3) | BIT(0));
100 /* disable mac DAC control */
101 mt76_clear(dev, MT_BBP(IBI, 9), BIT(11));
102 mt76_rmw_field(dev, MT_BBP(TXBE, 5), 3, 1);
103 mt76_rmw_field(dev, MT_TX_PIN_CFG, MT_TX_PIN_CFG_TXANT, 0xc);
104 mt76_rmw_field(dev, MT_BBP(CORE, 32), GENMASK(21, 20), 1);
106 mt76_rmw_field(dev, MT_BBP(CORE, 33), GENMASK(12, 9), 1);
113 /* enable mac DAC control */
114 mt76_set(dev, MT_BBP(IBI, 9), BIT(11));
115 mt76_set(dev, MT_BBP(TXBE, 5), 3);
116 mt76_rmw_field(dev, MT_TX_PIN_CFG, MT_TX_PIN_CFG_TXANT, 0xf);
117 mt76_clear(dev, MT_BBP(CORE, 32), GENMASK(21, 20));
118 mt76_clear(dev, MT_BBP(CORE, 33), GENMASK(12, 9));
124 mt76_wr(dev, MT_BBP(AGC, 0), val);
127 int mt76x2_phy_set_channel(struct mt76x02_dev *dev,
128 struct cfg80211_chan_def *chandef)
130 struct ieee80211_channel *chan = chandef->chan;
131 bool scan = test_bit(MT76_SCANNING, &dev->mt76.state);
132 enum nl80211_band band = chan->band;
135 u32 ext_cca_chan[4] = {
136 [0] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 0) |
137 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 1) |
138 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 2) |
139 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 3) |
140 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(0)),
141 [1] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 1) |
142 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 0) |
143 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 2) |
144 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 3) |
145 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(1)),
146 [2] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 2) |
147 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 3) |
148 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 1) |
149 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 0) |
150 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(2)),
151 [3] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 3) |
152 FIELD_PREP(MT_EXT_CCA_CFG_CCA1, 2) |
153 FIELD_PREP(MT_EXT_CCA_CFG_CCA2, 1) |
154 FIELD_PREP(MT_EXT_CCA_CFG_CCA3, 0) |
155 FIELD_PREP(MT_EXT_CCA_CFG_CCA_MASK, BIT(3)),
162 dev->cal.channel_cal_done = false;
163 freq = chandef->chan->center_freq;
164 freq1 = chandef->center_freq1;
165 channel = chan->hw_value;
167 switch (chandef->width) {
168 case NL80211_CHAN_WIDTH_40:
177 channel += 2 - ch_group_index * 4;
179 case NL80211_CHAN_WIDTH_80:
180 ch_group_index = (freq - freq1 + 30) / 20;
181 if (WARN_ON(ch_group_index < 0 || ch_group_index > 3))
184 bw_index = ch_group_index;
185 channel += 6 - ch_group_index * 4;
194 mt76x2_read_rx_gain(dev);
195 mt76x2_phy_set_txpower_regs(dev, band);
196 mt76x2_configure_tx_delay(dev, band, bw);
197 mt76x2_phy_set_txpower(dev);
199 mt76x02_phy_set_band(dev, chan->band, ch_group_index & 1);
200 mt76x02_phy_set_bw(dev, chandef->width, ch_group_index);
202 mt76_rmw(dev, MT_EXT_CCA_CFG,
203 (MT_EXT_CCA_CFG_CCA0 |
204 MT_EXT_CCA_CFG_CCA1 |
205 MT_EXT_CCA_CFG_CCA2 |
206 MT_EXT_CCA_CFG_CCA3 |
207 MT_EXT_CCA_CFG_CCA_MASK),
208 ext_cca_chan[ch_group_index]);
210 ret = mt76x2_mcu_set_channel(dev, channel, bw, bw_index, scan);
214 mt76x2_mcu_init_gain(dev, channel, dev->cal.rx.mcu_gain, true);
216 mt76x2_phy_set_antenna(dev);
219 if (mt76xx_rev(dev) >= MT76XX_REV_E3)
220 mt76_set(dev, MT_BBP(RXO, 13), BIT(10));
222 if (!dev->cal.init_cal_done) {
223 u8 val = mt76x02_eeprom_get(dev, MT_EE_BT_RCAL_RESULT);
226 mt76x02_mcu_calibrate(dev, MCU_CAL_R, 0);
229 mt76x02_mcu_calibrate(dev, MCU_CAL_RXDCOC, channel);
231 /* Rx LPF calibration */
232 if (!dev->cal.init_cal_done)
233 mt76x02_mcu_calibrate(dev, MCU_CAL_RC, 0);
235 dev->cal.init_cal_done = true;
237 mt76_wr(dev, MT_BBP(AGC, 61), 0xFF64A4E2);
238 mt76_wr(dev, MT_BBP(AGC, 7), 0x08081010);
239 mt76_wr(dev, MT_BBP(AGC, 11), 0x00000404);
240 mt76_wr(dev, MT_BBP(AGC, 2), 0x00007070);
241 mt76_wr(dev, MT_TXOP_CTRL_CFG, 0x04101B3F);
246 mt76x2_phy_channel_calibrate(dev, true);
247 mt76x02_init_agc_gain(dev);
249 /* init default values for temp compensation */
250 if (mt76x2_tssi_enabled(dev)) {
251 mt76_rmw_field(dev, MT_TX_ALC_CFG_1, MT_TX_ALC_CFG_1_TEMP_COMP,
253 mt76_rmw_field(dev, MT_TX_ALC_CFG_2, MT_TX_ALC_CFG_2_TEMP_COMP,
257 ieee80211_queue_delayed_work(mt76_hw(dev), &dev->cal_work,
258 MT_CALIBRATE_INTERVAL);
264 mt76x2_phy_temp_compensate(struct mt76x02_dev *dev)
266 struct mt76x2_temp_comp t;
269 if (mt76x2_get_temp_comp(dev, &t))
272 temp = mt76_get_field(dev, MT_TEMP_SENSOR, MT_TEMP_SENSOR_VAL);
273 temp -= t.temp_25_ref;
274 temp = (temp * 1789) / 1000 + 25;
275 dev->cal.temp = temp;
278 db_diff = (temp - 25) / t.high_slope;
280 db_diff = (25 - temp) / t.low_slope;
282 db_diff = min(db_diff, t.upper_bound);
283 db_diff = max(db_diff, t.lower_bound);
285 mt76_rmw_field(dev, MT_TX_ALC_CFG_1, MT_TX_ALC_CFG_1_TEMP_COMP,
287 mt76_rmw_field(dev, MT_TX_ALC_CFG_2, MT_TX_ALC_CFG_2_TEMP_COMP,
291 void mt76x2_phy_calibrate(struct work_struct *work)
293 struct mt76x02_dev *dev;
295 dev = container_of(work, struct mt76x02_dev, cal_work.work);
296 mt76x2_phy_channel_calibrate(dev, false);
297 mt76x2_phy_tssi_compensate(dev);
298 mt76x2_phy_temp_compensate(dev);
299 mt76x2_phy_update_channel_gain(dev);
300 ieee80211_queue_delayed_work(mt76_hw(dev), &dev->cal_work,
301 MT_CALIBRATE_INTERVAL);
304 int mt76x2_phy_start(struct mt76x02_dev *dev)
308 ret = mt76x02_mcu_set_radio_state(dev, true);
312 mt76x2_mcu_load_cr(dev, MT_RF_BBP_CR, 0, 0);