2 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
16 #include <linux/mtd/mtd.h>
17 #include <linux/mtd/partitions.h>
18 #include <linux/etherdevice.h>
19 #include <asm/unaligned.h>
31 field_validate(u8 val)
33 if (!field_valid(val))
40 mt7601u_efuse_read(struct mt7601u_dev *dev, u16 addr, u8 *data,
41 enum mt7601u_eeprom_access_modes mode)
46 val = mt76_rr(dev, MT_EFUSE_CTRL);
47 val &= ~(MT_EFUSE_CTRL_AIN |
49 val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf) |
50 FIELD_PREP(MT_EFUSE_CTRL_MODE, mode) |
52 mt76_wr(dev, MT_EFUSE_CTRL, val);
54 if (!mt76_poll(dev, MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000))
57 val = mt76_rr(dev, MT_EFUSE_CTRL);
58 if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT) {
59 /* Parts of eeprom not in the usage map (0x80-0xc0,0xf0)
60 * will not return valid data but it's ok.
62 memset(data, 0xff, 16);
66 for (i = 0; i < 4; i++) {
67 val = mt76_rr(dev, MT_EFUSE_DATA(i));
68 put_unaligned_le32(val, data + 4 * i);
75 mt7601u_efuse_physical_size_check(struct mt7601u_dev *dev)
77 const int map_reads = DIV_ROUND_UP(MT_EFUSE_USAGE_MAP_SIZE, 16);
78 u8 data[round_up(MT_EFUSE_USAGE_MAP_SIZE, 16)];
80 u32 start = 0, end = 0, cnt_free;
82 for (i = 0; i < map_reads; i++) {
83 ret = mt7601u_efuse_read(dev, MT_EE_USAGE_MAP_START + i * 16,
84 data + i * 16, MT_EE_PHYSICAL_READ);
89 for (i = 0; i < MT_EFUSE_USAGE_MAP_SIZE; i++)
92 start = MT_EE_USAGE_MAP_START + i;
93 end = MT_EE_USAGE_MAP_START + i;
95 cnt_free = end - start + 1;
97 if (MT_EFUSE_USAGE_MAP_SIZE - cnt_free < 5) {
98 dev_err(dev->dev, "Error: your device needs default EEPROM file and this driver doesn't support it!\n");
106 mt7601u_has_tssi(struct mt7601u_dev *dev, u8 *eeprom)
108 u16 nic_conf1 = get_unaligned_le16(eeprom + MT_EE_NIC_CONF_1);
110 return (u16)~nic_conf1 && (nic_conf1 & MT_EE_NIC_CONF_1_TX_ALC_EN);
114 mt7601u_set_chip_cap(struct mt7601u_dev *dev, u8 *eeprom)
116 u16 nic_conf0 = get_unaligned_le16(eeprom + MT_EE_NIC_CONF_0);
117 u16 nic_conf1 = get_unaligned_le16(eeprom + MT_EE_NIC_CONF_1);
119 if (!field_valid(nic_conf1 & 0xff))
122 dev->ee->tssi_enabled = mt7601u_has_tssi(dev, eeprom) &&
123 !(nic_conf1 & MT_EE_NIC_CONF_1_TEMP_TX_ALC);
125 if (nic_conf1 & MT_EE_NIC_CONF_1_HW_RF_CTRL)
127 "Error: this driver does not support HW RF ctrl\n");
129 if (!field_valid(nic_conf0 >> 8))
132 if (FIELD_GET(MT_EE_NIC_CONF_0_RX_PATH, nic_conf0) > 1 ||
133 FIELD_GET(MT_EE_NIC_CONF_0_TX_PATH, nic_conf0) > 1)
135 "Error: device has more than 1 RX/TX stream!\n");
138 static void mt7601u_set_channel_target_power(struct mt7601u_dev *dev,
139 u8 *eeprom, u8 max_pwr)
141 u8 trgt_pwr = eeprom[MT_EE_TX_TSSI_TARGET_POWER];
143 if (trgt_pwr > max_pwr || !trgt_pwr) {
144 dev_warn(dev->dev, "Error: EEPROM trgt power invalid %hhx!\n",
149 memset(dev->ee->chan_pwr, trgt_pwr, sizeof(dev->ee->chan_pwr));
153 mt7601u_set_channel_power(struct mt7601u_dev *dev, u8 *eeprom)
158 val = mt7601u_rr(dev, MT_TX_ALC_CFG_0);
159 max_pwr = FIELD_GET(MT_TX_ALC_CFG_0_LIMIT_0, val);
161 if (mt7601u_has_tssi(dev, eeprom)) {
162 mt7601u_set_channel_target_power(dev, eeprom, max_pwr);
166 for (i = 0; i < 14; i++) {
167 s8 power = field_validate(eeprom[MT_EE_TX_POWER_OFFSET + i]);
169 if (power > max_pwr || power < 0)
170 power = MT7601U_DEFAULT_TX_POWER;
172 dev->ee->chan_pwr[i] = power;
177 mt7601u_set_country_reg(struct mt7601u_dev *dev, u8 *eeprom)
179 /* Note: - region 31 is not valid for mt7601u (see rtmp_init.c)
180 * - comments in rtmp_def.h are incorrect (see rt_channel.c)
182 static const struct reg_channel_bounds chan_bounds[] = {
183 /* EEPROM country regions 0 - 7 */
184 { 1, 11 }, { 1, 13 }, { 10, 2 }, { 10, 4 },
185 { 14, 1 }, { 1, 14 }, { 3, 7 }, { 5, 9 },
186 /* EEPROM country regions 32 - 33 */
189 u8 val = eeprom[MT_EE_COUNTRY_REGION];
194 if (val > 31 && val < 33)
199 "EEPROM country region %02hhx (channels %hhd-%hhd)\n",
200 val, chan_bounds[idx].start,
201 chan_bounds[idx].start + chan_bounds[idx].num - 1);
203 idx = 5; /* channels 1 - 14 */
205 dev->ee->reg = chan_bounds[idx];
207 /* TODO: country region 33 is special - phy should be set to B-mode
208 * before entering channel 14 (see sta/connect.c)
213 mt7601u_set_rf_freq_off(struct mt7601u_dev *dev, u8 *eeprom)
217 dev->ee->rf_freq_off = field_validate(eeprom[MT_EE_FREQ_OFFSET]);
218 comp = field_validate(eeprom[MT_EE_FREQ_OFFSET_COMPENSATION]);
221 dev->ee->rf_freq_off -= comp & 0x7f;
223 dev->ee->rf_freq_off += comp;
227 mt7601u_set_rssi_offset(struct mt7601u_dev *dev, u8 *eeprom)
230 s8 *rssi_offset = dev->ee->rssi_offset;
232 for (i = 0; i < 2; i++) {
233 rssi_offset[i] = eeprom[MT_EE_RSSI_OFFSET + i];
235 if (rssi_offset[i] < -10 || rssi_offset[i] > 10) {
237 "Warning: EEPROM RSSI is invalid %02hhx\n",
245 mt7601u_extra_power_over_mac(struct mt7601u_dev *dev)
249 val = ((mt7601u_rr(dev, MT_TX_PWR_CFG_1) & 0x0000ff00) >> 8);
250 val |= ((mt7601u_rr(dev, MT_TX_PWR_CFG_2) & 0x0000ff00) << 8);
251 mt7601u_wr(dev, MT_TX_PWR_CFG_7, val);
253 val = ((mt7601u_rr(dev, MT_TX_PWR_CFG_4) & 0x0000ff00) >> 8);
254 mt7601u_wr(dev, MT_TX_PWR_CFG_9, val);
258 mt7601u_set_power_rate(struct power_per_rate *rate, s8 delta, u8 value)
260 /* Invalid? Note: vendor driver does not handle this */
264 rate->raw = s6_validate(value);
265 rate->bw20 = s6_to_int(value);
266 /* Note: vendor driver does cap the value to s6 right away */
267 rate->bw40 = rate->bw20 + delta;
271 mt7601u_save_power_rate(struct mt7601u_dev *dev, s8 delta, u32 val, int i)
273 struct mt7601u_rate_power *t = &dev->ee->power_rate_table;
277 mt7601u_set_power_rate(&t->cck[0], delta, (val >> 0) & 0xff);
278 mt7601u_set_power_rate(&t->cck[1], delta, (val >> 8) & 0xff);
279 /* Save cck bw20 for fixups of channel 14 */
280 dev->ee->real_cck_bw20[0] = t->cck[0].bw20;
281 dev->ee->real_cck_bw20[1] = t->cck[1].bw20;
283 mt7601u_set_power_rate(&t->ofdm[0], delta, (val >> 16) & 0xff);
284 mt7601u_set_power_rate(&t->ofdm[1], delta, (val >> 24) & 0xff);
287 mt7601u_set_power_rate(&t->ofdm[2], delta, (val >> 0) & 0xff);
288 mt7601u_set_power_rate(&t->ofdm[3], delta, (val >> 8) & 0xff);
289 mt7601u_set_power_rate(&t->ht[0], delta, (val >> 16) & 0xff);
290 mt7601u_set_power_rate(&t->ht[1], delta, (val >> 24) & 0xff);
293 mt7601u_set_power_rate(&t->ht[2], delta, (val >> 0) & 0xff);
294 mt7601u_set_power_rate(&t->ht[3], delta, (val >> 8) & 0xff);
304 if (!field_valid(val) || !(val & BIT(7)))
317 mt7601u_config_tx_power_per_rate(struct mt7601u_dev *dev, u8 *eeprom)
323 bw40_delta = get_delta(eeprom[MT_EE_TX_POWER_DELTA_BW40]);
325 for (i = 0; i < 5; i++) {
326 val = get_unaligned_le32(eeprom + MT_EE_TX_POWER_BYRATE(i));
328 mt7601u_save_power_rate(dev, bw40_delta, val, i);
331 mt7601u_wr(dev, MT_TX_PWR_CFG_0 + i * 4, val);
334 mt7601u_extra_power_over_mac(dev);
338 mt7601u_init_tssi_params(struct mt7601u_dev *dev, u8 *eeprom)
340 struct tssi_data *d = &dev->ee->tssi_data;
342 if (!dev->ee->tssi_enabled)
345 d->slope = eeprom[MT_EE_TX_TSSI_SLOPE];
346 d->tx0_delta_offset = eeprom[MT_EE_TX_TSSI_OFFSET] * 1024;
347 d->offset[0] = eeprom[MT_EE_TX_TSSI_OFFSET_GROUP];
348 d->offset[1] = eeprom[MT_EE_TX_TSSI_OFFSET_GROUP + 1];
349 d->offset[2] = eeprom[MT_EE_TX_TSSI_OFFSET_GROUP + 2];
353 mt7601u_eeprom_init(struct mt7601u_dev *dev)
358 ret = mt7601u_efuse_physical_size_check(dev);
362 dev->ee = devm_kzalloc(dev->dev, sizeof(*dev->ee), GFP_KERNEL);
366 eeprom = kmalloc(MT7601U_EEPROM_SIZE, GFP_KERNEL);
370 for (i = 0; i + 16 <= MT7601U_EEPROM_SIZE; i += 16) {
371 ret = mt7601u_efuse_read(dev, i, eeprom + i, MT_EE_READ);
376 if (eeprom[MT_EE_VERSION_EE] > MT7601U_EE_MAX_VER)
378 "Warning: unsupported EEPROM version %02hhx\n",
379 eeprom[MT_EE_VERSION_EE]);
380 dev_info(dev->dev, "EEPROM ver:%02hhx fae:%02hhx\n",
381 eeprom[MT_EE_VERSION_EE], eeprom[MT_EE_VERSION_FAE]);
383 mt7601u_set_macaddr(dev, eeprom + MT_EE_MAC_ADDR);
384 mt7601u_set_chip_cap(dev, eeprom);
385 mt7601u_set_channel_power(dev, eeprom);
386 mt7601u_set_country_reg(dev, eeprom);
387 mt7601u_set_rf_freq_off(dev, eeprom);
388 mt7601u_set_rssi_offset(dev, eeprom);
389 dev->ee->ref_temp = eeprom[MT_EE_REF_TEMP];
390 dev->ee->lna_gain = eeprom[MT_EE_LNA_GAIN];
392 mt7601u_config_tx_power_per_rate(dev, eeprom);
394 mt7601u_init_tssi_params(dev, eeprom);