// SPDX-License-Identifier: GPL-2.0-only
/*
* (c) Copyright 2002-2010, Ralink Technology, Inc.
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
*/
#include "mt7601u.h"
#include "mcu.h"
#include "eeprom.h"
#include "trace.h"
#include "initvals_phy.h"
#include <linux/etherdevice.h>
static void mt7601u_agc_reset(struct mt7601u_dev *dev);
static int
mt7601u_rf_wr(struct mt7601u_dev *dev, u8 bank, u8 offset, u8 value)
{
int ret = 0 ;
if (WARN_ON(!test_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state)) ||
WARN_ON(offset > 63 ))
return -EINVAL;
if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
return 0 ;
mutex_lock(&dev->reg_atomic_mutex);
if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0 , 100 )) {
ret = -ETIMEDOUT;
goto out;
}
mt7601u_wr(dev, MT_RF_CSR_CFG,
FIELD_PREP(MT_RF_CSR_CFG_DATA, value) |
FIELD_PREP(MT_RF_CSR_CFG_REG_BANK, bank) |
FIELD_PREP(MT_RF_CSR_CFG_REG_ID, offset) |
MT_RF_CSR_CFG_WR |
MT_RF_CSR_CFG_KICK);
trace_rf_write(dev, bank, offset, value);
out:
mutex_unlock(&dev->reg_atomic_mutex);
if (ret < 0 )
dev_err(dev->dev, "Error: RF write %02hhx:%02hhx failed:%d!!\n" ,
bank, offset, ret);
return ret;
}
static int
mt7601u_rf_rr(struct mt7601u_dev *dev, u8 bank, u8 offset)
{
int ret = -ETIMEDOUT;
u32 val;
if (WARN_ON(!test_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state)) ||
WARN_ON(offset > 63 ))
return -EINVAL;
if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
return 0 xff;
mutex_lock(&dev->reg_atomic_mutex);
if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0 , 100 ))
goto out;
mt7601u_wr(dev, MT_RF_CSR_CFG,
FIELD_PREP(MT_RF_CSR_CFG_REG_BANK, bank) |
FIELD_PREP(MT_RF_CSR_CFG_REG_ID, offset) |
MT_RF_CSR_CFG_KICK);
if (!mt76_poll(dev, MT_RF_CSR_CFG, MT_RF_CSR_CFG_KICK, 0 , 100 ))
goto out;
val = mt7601u_rr(dev, MT_RF_CSR_CFG);
if (FIELD_GET(MT_RF_CSR_CFG_REG_ID, val) == offset &&
FIELD_GET(MT_RF_CSR_CFG_REG_BANK, val) == bank) {
ret = FIELD_GET(MT_RF_CSR_CFG_DATA, val);
trace_rf_read(dev, bank, offset, ret);
}
out:
mutex_unlock(&dev->reg_atomic_mutex);
if (ret < 0 )
dev_err(dev->dev, "Error: RF read %02hhx:%02hhx failed:%d!!\n" ,
bank, offset, ret);
return ret;
}
static int
mt7601u_rf_rmw(struct mt7601u_dev *dev, u8 bank, u8 offset, u8 mask, u8 val)
{
int ret;
ret = mt7601u_rf_rr(dev, bank, offset);
if (ret < 0 )
return ret;
val |= ret & ~mask;
ret = mt7601u_rf_wr(dev, bank, offset, val);
if (ret)
return ret;
return val;
}
static int
mt7601u_rf_set(struct mt7601u_dev *dev, u8 bank, u8 offset, u8 val)
{
return mt7601u_rf_rmw(dev, bank, offset, 0 , val);
}
static int
mt7601u_rf_clear(struct mt7601u_dev *dev, u8 bank, u8 offset, u8 mask)
{
return mt7601u_rf_rmw(dev, bank, offset, mask, 0 );
}
static void mt7601u_bbp_wr(struct mt7601u_dev *dev, u8 offset, u8 val)
{
if (WARN_ON(!test_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state)) ||
test_bit(MT7601U_STATE_REMOVED, &dev->state))
return ;
mutex_lock(&dev->reg_atomic_mutex);
if (!mt76_poll(dev, MT_BBP_CSR_CFG, MT_BBP_CSR_CFG_BUSY, 0 , 1000 )) {
dev_err(dev->dev, "Error: BBP write %02hhx failed!!\n" , offset);
goto out;
}
mt7601u_wr(dev, MT_BBP_CSR_CFG,
FIELD_PREP(MT_BBP_CSR_CFG_VAL, val) |
FIELD_PREP(MT_BBP_CSR_CFG_REG_NUM, offset) |
MT_BBP_CSR_CFG_RW_MODE | MT_BBP_CSR_CFG_BUSY);
trace_bbp_write(dev, offset, val);
out:
mutex_unlock(&dev->reg_atomic_mutex);
}
static int mt7601u_bbp_rr(struct mt7601u_dev *dev, u8 offset)
{
u32 val;
int ret = -ETIMEDOUT;
if (WARN_ON(!test_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state)))
return -EINVAL;
if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
return 0 xff;
mutex_lock(&dev->reg_atomic_mutex);
if (!mt76_poll(dev, MT_BBP_CSR_CFG, MT_BBP_CSR_CFG_BUSY, 0 , 1000 ))
goto out;
mt7601u_wr(dev, MT_BBP_CSR_CFG,
FIELD_PREP(MT_BBP_CSR_CFG_REG_NUM, offset) |
MT_BBP_CSR_CFG_RW_MODE | MT_BBP_CSR_CFG_BUSY |
MT_BBP_CSR_CFG_READ);
if (!mt76_poll(dev, MT_BBP_CSR_CFG, MT_BBP_CSR_CFG_BUSY, 0 , 1000 ))
goto out;
val = mt7601u_rr(dev, MT_BBP_CSR_CFG);
if (FIELD_GET(MT_BBP_CSR_CFG_REG_NUM, val) == offset) {
ret = FIELD_GET(MT_BBP_CSR_CFG_VAL, val);
trace_bbp_read(dev, offset, ret);
}
out:
mutex_unlock(&dev->reg_atomic_mutex);
if (ret < 0 )
dev_err(dev->dev, "Error: BBP read %02hhx failed:%d!!\n" ,
offset, ret);
return ret;
}
static int mt7601u_bbp_rmw(struct mt7601u_dev *dev, u8 offset, u8 mask, u8 val)
{
int ret;
ret = mt7601u_bbp_rr(dev, offset);
if (ret < 0 )
return ret;
val |= ret & ~mask;
mt7601u_bbp_wr(dev, offset, val);
return val;
}
static u8 mt7601u_bbp_rmc(struct mt7601u_dev *dev, u8 offset, u8 mask, u8 val)
{
int ret;
ret = mt7601u_bbp_rr(dev, offset);
if (ret < 0 )
return ret;
val |= ret & ~mask;
if (ret != val)
mt7601u_bbp_wr(dev, offset, val);
return val;
}
int mt7601u_wait_bbp_ready(struct mt7601u_dev *dev)
{
int i = 20 ;
u8 val;
do {
val = mt7601u_bbp_rr(dev, MT_BBP_REG_VERSION);
if (val && val != 0 xff)
break ;
} while (--i);
if (!i) {
dev_err(dev->dev, "Error: BBP is not ready\n" );
return -EIO;
}
return 0 ;
}
u32 mt7601u_bbp_set_ctrlch(struct mt7601u_dev *dev, bool below)
{
return mt7601u_bbp_rmc(dev, 3 , 0 x20, below ? 0 x20 : 0 );
}
int mt7601u_phy_get_rssi(struct mt7601u_dev *dev,
struct mt7601u_rxwi *rxwi, u16 rate)
{
static const s8 lna[2 ][2 ][3 ] = {
/* main LNA */ {
/* bw20 */ { -2, 15, 33 },
/* bw40 */ { 0, 16, 34 }
},
/* aux LNA */ {
/* bw20 */ { -2, 15, 33 },
/* bw40 */ { -2, 16, 34 }
}
};
int bw = FIELD_GET(MT_RXWI_RATE_BW, rate);
int aux_lna = FIELD_GET(MT_RXWI_ANT_AUX_LNA, rxwi->ant);
int lna_id = FIELD_GET(MT_RXWI_GAIN_RSSI_LNA_ID, rxwi->gain);
int val;
if (lna_id) /* LNA id can be 0, 2, 3. */
lna_id--;
val = 8 ;
val -= lna[aux_lna][bw][lna_id];
val -= FIELD_GET(MT_RXWI_GAIN_RSSI_VAL, rxwi->gain);
val -= dev->ee->lna_gain;
val -= dev->ee->rssi_offset[0 ];
return val;
}
static void mt7601u_vco_cal(struct mt7601u_dev *dev)
{
mt7601u_rf_wr(dev, 0 , 4 , 0 x0a);
mt7601u_rf_wr(dev, 0 , 5 , 0 x20);
mt7601u_rf_set(dev, 0 , 4 , BIT(7 ));
msleep(2 );
}
static int mt7601u_set_bw_filter(struct mt7601u_dev *dev, bool cal)
{
u32 filter = 0 ;
int ret;
if (!cal)
filter |= 0 x10000;
if (dev->bw != MT_BW_20)
filter |= 0 x00100;
/* TX */
ret = mt7601u_mcu_calibrate(dev, MCU_CAL_BW, filter | 1 );
if (ret)
return ret;
/* RX */
return mt7601u_mcu_calibrate(dev, MCU_CAL_BW, filter);
}
static int mt7601u_load_bbp_temp_table_bw(struct mt7601u_dev *dev)
{
const struct reg_table *t;
if (WARN_ON(dev->temp_mode > MT_TEMP_MODE_LOW))
return -EINVAL;
t = &bbp_mode_table[dev->temp_mode][dev->bw];
return mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP, t->regs, t->n);
}
static int mt7601u_bbp_temp(struct mt7601u_dev *dev, int mode, const char *name)
{
const struct reg_table *t;
int ret;
if (dev->temp_mode == mode)
return 0 ;
dev->temp_mode = mode;
trace_temp_mode(dev, mode);
t = bbp_mode_table[dev->temp_mode];
ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP,
t[2 ].regs, t[2 ].n);
if (ret)
return ret;
return mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP,
t[dev->bw].regs, t[dev->bw].n);
}
static void mt7601u_apply_ch14_fixup(struct mt7601u_dev *dev, int hw_chan)
{
struct mt7601u_rate_power *t = &dev->ee->power_rate_table;
if (hw_chan != 14 || dev->bw != MT_BW_20) {
mt7601u_bbp_rmw(dev, 4 , 0 x20, 0 );
mt7601u_bbp_wr(dev, 178 , 0 xff);
t->cck[0 ].bw20 = dev->ee->real_cck_bw20[0 ];
t->cck[1 ].bw20 = dev->ee->real_cck_bw20[1 ];
} else { /* Apply CH14 OBW fixup */
mt7601u_bbp_wr(dev, 4 , 0 x60);
mt7601u_bbp_wr(dev, 178 , 0 );
/* Note: vendor code is buggy here for negative values */
t->cck[0 ].bw20 = dev->ee->real_cck_bw20[0 ] - 2 ;
t->cck[1 ].bw20 = dev->ee->real_cck_bw20[1 ] - 2 ;
}
}
static int __mt7601u_phy_set_channel(struct mt7601u_dev *dev,
struct cfg80211_chan_def *chandef)
{
#define FREQ_PLAN_REGS 4
static const u8 freq_plan[14 ][FREQ_PLAN_REGS] = {
{ 0 x99, 0 x99, 0 x09, 0 x50 },
{ 0 x46, 0 x44, 0 x0a, 0 x50 },
{ 0 xec, 0 xee, 0 x0a, 0 x50 },
{ 0 x99, 0 x99, 0 x0b, 0 x50 },
{ 0 x46, 0 x44, 0 x08, 0 x51 },
{ 0 xec, 0 xee, 0 x08, 0 x51 },
{ 0 x99, 0 x99, 0 x09, 0 x51 },
{ 0 x46, 0 x44, 0 x0a, 0 x51 },
{ 0 xec, 0 xee, 0 x0a, 0 x51 },
{ 0 x99, 0 x99, 0 x0b, 0 x51 },
{ 0 x46, 0 x44, 0 x08, 0 x52 },
{ 0 xec, 0 xee, 0 x08, 0 x52 },
{ 0 x99, 0 x99, 0 x09, 0 x52 },
{ 0 x33, 0 x33, 0 x0b, 0 x52 },
};
struct mt76_reg_pair channel_freq_plan[FREQ_PLAN_REGS] = {
{ 17 , 0 }, { 18 , 0 }, { 19 , 0 }, { 20 , 0 },
};
struct mt76_reg_pair bbp_settings[3 ] = {
{ 62 , 0 x37 - dev->ee->lna_gain },
{ 63 , 0 x37 - dev->ee->lna_gain },
{ 64 , 0 x37 - dev->ee->lna_gain },
};
struct ieee80211_channel *chan = chandef->chan;
enum nl80211_channel_type chan_type =
cfg80211_get_chandef_type(chandef);
struct mt7601u_rate_power *t = &dev->ee->power_rate_table;
int chan_idx;
bool chan_ext_below;
u8 bw;
int i, ret;
bw = MT_BW_20;
chan_ext_below = (chan_type == NL80211_CHAN_HT40MINUS);
chan_idx = chan->hw_value - 1 ;
if (chandef->width == NL80211_CHAN_WIDTH_40) {
bw = MT_BW_40;
if (chan_idx > 1 && chan_type == NL80211_CHAN_HT40MINUS)
chan_idx -= 2 ;
else if (chan_idx < 12 && chan_type == NL80211_CHAN_HT40PLUS)
chan_idx += 2 ;
else
dev_err(dev->dev, "Error: invalid 40MHz channel!!\n" );
}
if (bw != dev->bw || chan_ext_below != dev->chan_ext_below) {
dev_dbg(dev->dev, "Info: switching HT mode bw:%d below:%d\n" ,
bw, chan_ext_below);
mt7601u_bbp_set_bw(dev, bw);
mt7601u_bbp_set_ctrlch(dev, chan_ext_below);
mt7601u_mac_set_ctrlch(dev, chan_ext_below);
dev->chan_ext_below = chan_ext_below;
}
for (i = 0 ; i < FREQ_PLAN_REGS; i++)
channel_freq_plan[i].value = freq_plan[chan_idx][i];
ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_RF,
channel_freq_plan, FREQ_PLAN_REGS);
if (ret)
return ret;
mt7601u_rmw(dev, MT_TX_ALC_CFG_0, 0 x3f3f,
dev->ee->chan_pwr[chan_idx] & 0 x3f);
ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP,
bbp_settings, ARRAY_SIZE(bbp_settings));
if (ret)
return ret;
mt7601u_vco_cal(dev);
mt7601u_bbp_set_bw(dev, bw);
ret = mt7601u_set_bw_filter(dev, false );
if (ret)
return ret;
mt7601u_apply_ch14_fixup(dev, chan->hw_value);
mt7601u_wr(dev, MT_TX_PWR_CFG_0, int_to_s6(t->ofdm[1 ].bw20) << 24 |
int_to_s6(t->ofdm[0 ].bw20) << 16 |
int_to_s6(t->cck[1 ].bw20) << 8 |
int_to_s6(t->cck[0 ].bw20));
if (test_bit(MT7601U_STATE_SCANNING, &dev->state))
mt7601u_agc_reset(dev);
dev->chandef = *chandef;
return 0 ;
}
int mt7601u_phy_set_channel(struct mt7601u_dev *dev,
struct cfg80211_chan_def *chandef)
{
int ret;
cancel_delayed_work_sync(&dev->cal_work);
cancel_delayed_work_sync(&dev->freq_cal.work);
mutex_lock(&dev->hw_atomic_mutex);
ret = __mt7601u_phy_set_channel(dev, chandef);
mutex_unlock(&dev->hw_atomic_mutex);
if (ret)
return ret;
if (test_bit(MT7601U_STATE_SCANNING, &dev->state))
return 0 ;
ieee80211_queue_delayed_work(dev->hw, &dev->cal_work,
MT_CALIBRATE_INTERVAL);
if (dev->freq_cal.enabled)
ieee80211_queue_delayed_work(dev->hw, &dev->freq_cal.work,
MT_FREQ_CAL_INIT_DELAY);
return 0 ;
}
#define BBP_R47_FLAG GENMASK(2 , 0 )
#define BBP_R47_F_TSSI 0
#define BBP_R47_F_PKT_T 1
#define BBP_R47_F_TX_RATE 2
#define BBP_R47_F_TEMP 4
/**
* mt7601u_bbp_r47_get - read value through BBP R47/R49 pair
* @dev: pointer to adapter structure
* @reg: value of BBP R47 before the operation
* @flag: one of the BBP_R47_F_* flags
*
* Convenience helper for reading values through BBP R47/R49 pair.
* Takes old value of BBP R47 as @reg, because callers usually have it
* cached already.
*
* Return: value of BBP R49.
*/
static u8 mt7601u_bbp_r47_get(struct mt7601u_dev *dev, u8 reg, u8 flag)
{
flag |= reg & ~BBP_R47_FLAG;
mt7601u_bbp_wr(dev, 47 , flag);
usleep_range(500 , 700 );
return mt7601u_bbp_rr(dev, 49 );
}
static s8 mt7601u_read_bootup_temp(struct mt7601u_dev *dev)
{
u8 bbp_val, temp;
u32 rf_bp, rf_set;
int i;
rf_set = mt7601u_rr(dev, MT_RF_SETTING_0);
rf_bp = mt7601u_rr(dev, MT_RF_BYPASS_0);
mt7601u_wr(dev, MT_RF_BYPASS_0, 0 );
mt7601u_wr(dev, MT_RF_SETTING_0, 0 x00000010);
mt7601u_wr(dev, MT_RF_BYPASS_0, 0 x00000010);
bbp_val = mt7601u_bbp_rmw(dev, 47 , 0 , 0 x10);
mt7601u_bbp_wr(dev, 22 , 0 x40);
for (i = 100 ; i && (bbp_val & 0 x10); i--)
bbp_val = mt7601u_bbp_rr(dev, 47 );
temp = mt7601u_bbp_r47_get(dev, bbp_val, BBP_R47_F_TEMP);
mt7601u_bbp_wr(dev, 22 , 0 );
bbp_val = mt7601u_bbp_rr(dev, 21 );
bbp_val |= 0 x02;
mt7601u_bbp_wr(dev, 21 , bbp_val);
bbp_val &= ~0 x02;
mt7601u_bbp_wr(dev, 21 , bbp_val);
mt7601u_wr(dev, MT_RF_BYPASS_0, 0 );
mt7601u_wr(dev, MT_RF_SETTING_0, rf_set);
mt7601u_wr(dev, MT_RF_BYPASS_0, rf_bp);
trace_read_temp(dev, temp);
return temp;
}
static s8 mt7601u_read_temp(struct mt7601u_dev *dev)
{
int i;
u8 val;
s8 temp;
val = mt7601u_bbp_rmw(dev, 47 , 0 x7f, 0 x10);
/* Note: this rarely succeeds, temp can change even if it fails. */
for (i = 100 ; i && (val & 0 x10); i--)
val = mt7601u_bbp_rr(dev, 47 );
temp = mt7601u_bbp_r47_get(dev, val, BBP_R47_F_TEMP);
trace_read_temp(dev, temp);
return temp;
}
static void mt7601u_rxdc_cal(struct mt7601u_dev *dev)
{
static const struct mt76_reg_pair intro[] = {
{ 158 , 0 x8d }, { 159 , 0 xfc },
{ 158 , 0 x8c }, { 159 , 0 x4c },
}, outro[] = {
{ 158 , 0 x8d }, { 159 , 0 xe0 },
};
u32 mac_ctrl;
int i, ret;
mac_ctrl = mt7601u_rr(dev, MT_MAC_SYS_CTRL);
mt7601u_wr(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_ENABLE_RX);
ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP,
intro, ARRAY_SIZE(intro));
if (ret)
dev_err(dev->dev, "%s intro failed:%d\n" , __func__, ret);
for (i = 20 ; i; i--) {
usleep_range(300 , 500 );
mt7601u_bbp_wr(dev, 158 , 0 x8c);
if (mt7601u_bbp_rr(dev, 159 ) == 0 x0c)
break ;
}
if (!i)
dev_err(dev->dev, "%s timed out\n" , __func__);
mt7601u_wr(dev, MT_MAC_SYS_CTRL, 0 );
ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP,
outro, ARRAY_SIZE(outro));
if (ret)
dev_err(dev->dev, "%s outro failed:%d\n" , __func__, ret);
mt7601u_wr(dev, MT_MAC_SYS_CTRL, mac_ctrl);
}
void mt7601u_phy_recalibrate_after_assoc(struct mt7601u_dev *dev)
{
if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
return ;
mt7601u_mcu_calibrate(dev, MCU_CAL_DPD, dev->curr_temp);
mt7601u_rxdc_cal(dev);
}
/* Note: function copied from vendor driver */
static s16 lin2dBd(u16 linear)
{
short exp = 0 ;
unsigned int mantisa;
int app, dBd;
if (WARN_ON(!linear))
return -10000 ;
mantisa = linear;
exp = fls(mantisa) - 16 ;
if (exp > 0 )
mantisa >>= exp;
else
mantisa <<= abs(exp);
if (mantisa <= 0 xb800)
app = (mantisa + (mantisa >> 3 ) + (mantisa >> 4 ) - 0 x9600);
else
app = (mantisa - (mantisa >> 3 ) - (mantisa >> 6 ) - 0 x5a00);
if (app < 0 )
app = 0 ;
dBd = ((15 + exp) << 15 ) + app;
dBd = (dBd << 2 ) + (dBd << 1 ) + (dBd >> 6 ) + (dBd >> 7 );
dBd = (dBd >> 10 );
return dBd;
}
static void
mt7601u_set_initial_tssi(struct mt7601u_dev *dev, s16 tssi_db, s16 tssi_hvga_db)
{
struct tssi_data *d = &dev->ee->tssi_data;
int init_offset;
init_offset = -((tssi_db * d->slope + d->offset[1 ]) / 4096 ) + 10 ;
mt76_rmw(dev, MT_TX_ALC_CFG_1, MT_TX_ALC_CFG_1_TEMP_COMP,
int_to_s6(init_offset) & MT_TX_ALC_CFG_1_TEMP_COMP);
}
static void mt7601u_tssi_dc_gain_cal(struct mt7601u_dev *dev)
{
u8 rf_vga, rf_mixer, bbp_r47;
int i, j;
s8 res[4 ];
s16 tssi_init_db, tssi_init_hvga_db;
mt7601u_wr(dev, MT_RF_SETTING_0, 0 x00000030);
mt7601u_wr(dev, MT_RF_BYPASS_0, 0 x000c0030);
mt7601u_wr(dev, MT_MAC_SYS_CTRL, 0 );
mt7601u_bbp_wr(dev, 58 , 0 );
mt7601u_bbp_wr(dev, 241 , 0 x2);
mt7601u_bbp_wr(dev, 23 , 0 x8);
bbp_r47 = mt7601u_bbp_rr(dev, 47 );
/* Set VGA gain */
rf_vga = mt7601u_rf_rr(dev, 5 , 3 );
mt7601u_rf_wr(dev, 5 , 3 , 8 );
/* Mixer disable */
rf_mixer = mt7601u_rf_rr(dev, 4 , 39 );
mt7601u_rf_wr(dev, 4 , 39 , 0 );
for (i = 0 ; i < 4 ; i++) {
mt7601u_rf_wr(dev, 4 , 39 , (i & 1 ) ? rf_mixer : 0 );
mt7601u_bbp_wr(dev, 23 , (i < 2 ) ? 0 x08 : 0 x02);
mt7601u_rf_wr(dev, 5 , 3 , (i < 2 ) ? 0 x08 : 0 x11);
/* BBP TSSI initial and soft reset */
mt7601u_bbp_wr(dev, 22 , 0 );
mt7601u_bbp_wr(dev, 244 , 0 );
mt7601u_bbp_wr(dev, 21 , 1 );
udelay(1 );
mt7601u_bbp_wr(dev, 21 , 0 );
/* TSSI measurement */
mt7601u_bbp_wr(dev, 47 , 0 x50);
mt7601u_bbp_wr(dev, (i & 1 ) ? 244 : 22 , (i & 1 ) ? 0 x31 : 0 x40);
for (j = 20 ; j; j--)
if (!(mt7601u_bbp_rr(dev, 47 ) & 0 x10))
break ;
if (!j)
dev_err(dev->dev, "%s timed out\n" , __func__);
/* TSSI read */
mt7601u_bbp_wr(dev, 47 , 0 x40);
res[i] = mt7601u_bbp_rr(dev, 49 );
}
tssi_init_db = lin2dBd((short )res[1 ] - res[0 ]);
tssi_init_hvga_db = lin2dBd(((short )res[3 ] - res[2 ]) * 4 );
dev->tssi_init = res[0 ];
dev->tssi_init_hvga = res[2 ];
dev->tssi_init_hvga_offset_db = tssi_init_hvga_db - tssi_init_db;
dev_dbg(dev->dev,
"TSSI_init:%hhx db:%hx hvga:%hhx hvga_db:%hx off_db:%hx\n" ,
dev->tssi_init, tssi_init_db, dev->tssi_init_hvga,
tssi_init_hvga_db, dev->tssi_init_hvga_offset_db);
mt7601u_bbp_wr(dev, 22 , 0 );
mt7601u_bbp_wr(dev, 244 , 0 );
mt7601u_bbp_wr(dev, 21 , 1 );
udelay(1 );
mt7601u_bbp_wr(dev, 21 , 0 );
mt7601u_wr(dev, MT_RF_BYPASS_0, 0 );
mt7601u_wr(dev, MT_RF_SETTING_0, 0 );
mt7601u_rf_wr(dev, 5 , 3 , rf_vga);
mt7601u_rf_wr(dev, 4 , 39 , rf_mixer);
mt7601u_bbp_wr(dev, 47 , bbp_r47);
mt7601u_set_initial_tssi(dev, tssi_init_db, tssi_init_hvga_db);
}
static int mt7601u_temp_comp(struct mt7601u_dev *dev, bool on)
{
int ret, temp, hi_temp = 400 , lo_temp = -200 ;
temp = (dev->raw_temp - dev->ee->ref_temp) * MT_EE_TEMPERATURE_SLOPE;
dev->curr_temp = temp;
/* DPD Calibration */
if (temp - dev->dpd_temp > 450 || temp - dev->dpd_temp < -450 ) {
dev->dpd_temp = temp;
ret = mt7601u_mcu_calibrate(dev, MCU_CAL_DPD, dev->dpd_temp);
if (ret)
return ret;
mt7601u_vco_cal(dev);
dev_dbg(dev->dev, "Recalibrate DPD\n" );
}
/* PLL Lock Protect */
if (temp < -50 && !dev->pll_lock_protect) { /* < 20C */
dev->pll_lock_protect = true ;
mt7601u_rf_wr(dev, 4 , 4 , 6 );
mt7601u_rf_clear(dev, 4 , 10 , 0 x30);
dev_dbg(dev->dev, "PLL lock protect on - too cold\n" );
} else if (temp > 50 && dev->pll_lock_protect) { /* > 30C */
dev->pll_lock_protect = false ;
mt7601u_rf_wr(dev, 4 , 4 , 0 );
mt7601u_rf_rmw(dev, 4 , 10 , 0 x30, 0 x10);
dev_dbg(dev->dev, "PLL lock protect off\n" );
}
if (on) {
hi_temp -= 50 ;
lo_temp -= 50 ;
}
/* BBP CR for H, L, N temperature */
if (temp > hi_temp)
return mt7601u_bbp_temp(dev, MT_TEMP_MODE_HIGH, "high" );
else if (temp > lo_temp)
return mt7601u_bbp_temp(dev, MT_TEMP_MODE_NORMAL, "normal" );
else
return mt7601u_bbp_temp(dev, MT_TEMP_MODE_LOW, "low" );
}
/* Note: this is used only with TSSI, we can just use trgt_pwr from eeprom. */
static int mt7601u_current_tx_power(struct mt7601u_dev *dev)
{
return dev->ee->chan_pwr[dev->chandef.chan->hw_value - 1 ];
}
static bool mt7601u_use_hvga(struct mt7601u_dev *dev)
{
return !(mt7601u_current_tx_power(dev) > 20 );
}
static s16
mt7601u_phy_rf_pa_mode_val(struct mt7601u_dev *dev, int phy_mode, int tx_rate)
{
static const s16 decode_tb[] = { 0 , 8847 , -5734 , -5734 };
u32 reg;
switch (phy_mode) {
case MT_PHY_TYPE_OFDM:
tx_rate += 4 ;
fallthrough;
case MT_PHY_TYPE_CCK:
reg = dev->rf_pa_mode[0 ];
break ;
default :
reg = dev->rf_pa_mode[1 ];
break ;
}
return decode_tb[(reg >> (tx_rate * 2 )) & 0 x3];
}
static struct mt7601u_tssi_params
mt7601u_tssi_params_get(struct mt7601u_dev *dev)
{
static const u8 ofdm_pkt2rate[8 ] = { 6 , 4 , 2 , 0 , 7 , 5 , 3 , 1 };
static const int static_power[4 ] = { 0 , -49152 , -98304 , 49152 };
struct mt7601u_tssi_params p;
u8 bbp_r47, pkt_type, tx_rate;
struct power_per_rate *rate_table;
bbp_r47 = mt7601u_bbp_rr(dev, 47 );
p.tssi0 = mt7601u_bbp_r47_get(dev, bbp_r47, BBP_R47_F_TSSI);
dev->raw_temp = mt7601u_bbp_r47_get(dev, bbp_r47, BBP_R47_F_TEMP);
pkt_type = mt7601u_bbp_r47_get(dev, bbp_r47, BBP_R47_F_PKT_T);
p.trgt_power = mt7601u_current_tx_power(dev);
switch (pkt_type & 0 x03) {
case MT_PHY_TYPE_CCK:
tx_rate = (pkt_type >> 4 ) & 0 x03;
rate_table = dev->ee->power_rate_table.cck;
break ;
case MT_PHY_TYPE_OFDM:
tx_rate = ofdm_pkt2rate[(pkt_type >> 4 ) & 0 x07];
rate_table = dev->ee->power_rate_table.ofdm;
break ;
default :
tx_rate = mt7601u_bbp_r47_get(dev, bbp_r47, BBP_R47_F_TX_RATE);
tx_rate &= 0 x7f;
rate_table = dev->ee->power_rate_table.ht;
break ;
}
if (dev->bw == MT_BW_20)
p.trgt_power += rate_table[tx_rate / 2 ].bw20;
else
p.trgt_power += rate_table[tx_rate / 2 ].bw40;
p.trgt_power <<= 12 ;
dev_dbg(dev->dev, "tx_rate:%02hhx pwr:%08x\n" , tx_rate, p.trgt_power);
p.trgt_power += mt7601u_phy_rf_pa_mode_val(dev, pkt_type & 0 x03,
tx_rate);
/* Channel 14, cck, bw20 */
if ((pkt_type & 0 x03) == MT_PHY_TYPE_CCK) {
if (mt7601u_bbp_rr(dev, 4 ) & 0 x20)
p.trgt_power += mt7601u_bbp_rr(dev, 178 ) ? 18022 : 9830 ;
else
p.trgt_power += mt7601u_bbp_rr(dev, 178 ) ? 819 : 24576 ;
}
p.trgt_power += static_power[mt7601u_bbp_rr(dev, 1 ) & 0 x03];
p.trgt_power += dev->ee->tssi_data.tx0_delta_offset;
dev_dbg(dev->dev,
"tssi:%02hhx t_power:%08x temp:%02hhx pkt_type:%02hhx\n" ,
p.tssi0, p.trgt_power, dev->raw_temp, pkt_type);
return p;
}
static bool mt7601u_tssi_read_ready(struct mt7601u_dev *dev)
{
return !(mt7601u_bbp_rr(dev, 47 ) & 0 x10);
}
static int mt7601u_tssi_cal(struct mt7601u_dev *dev)
{
struct mt7601u_tssi_params params;
int curr_pwr, diff_pwr;
char tssi_offset;
s8 tssi_init;
s16 tssi_m_dc, tssi_db;
bool hvga;
u32 val;
if (!dev->ee->tssi_enabled)
return 0 ;
hvga = mt7601u_use_hvga(dev);
if (!dev->tssi_read_trig)
return mt7601u_mcu_tssi_read_kick(dev, hvga);
if (!mt7601u_tssi_read_ready(dev))
return 0 ;
params = mt7601u_tssi_params_get(dev);
tssi_init = (hvga ? dev->tssi_init_hvga : dev->tssi_init);
tssi_m_dc = params.tssi0 - tssi_init;
tssi_db = lin2dBd(tssi_m_dc);
dev_dbg(dev->dev, "tssi dc:%04hx db:%04hx hvga:%d\n" ,
tssi_m_dc, tssi_db, hvga);
if (dev->chandef.chan->hw_value < 5 )
tssi_offset = dev->ee->tssi_data.offset[0 ];
else if (dev->chandef.chan->hw_value < 9 )
tssi_offset = dev->ee->tssi_data.offset[1 ];
else
tssi_offset = dev->ee->tssi_data.offset[2 ];
if (hvga)
tssi_db -= dev->tssi_init_hvga_offset_db;
curr_pwr = tssi_db * dev->ee->tssi_data.slope + (tssi_offset << 9 );
diff_pwr = params.trgt_power - curr_pwr;
dev_dbg(dev->dev, "Power curr:%08x diff:%08x\n" , curr_pwr, diff_pwr);
if (params.tssi0 > 126 && diff_pwr > 0 ) {
dev_err(dev->dev, "Error: TSSI upper saturation\n" );
diff_pwr = 0 ;
}
if (params.tssi0 - tssi_init < 1 && diff_pwr < 0 ) {
dev_err(dev->dev, "Error: TSSI lower saturation\n" );
diff_pwr = 0 ;
}
if ((dev->prev_pwr_diff ^ diff_pwr) < 0 && abs(diff_pwr) < 4096 &&
(abs(diff_pwr) > abs(dev->prev_pwr_diff) ||
(diff_pwr > 0 && diff_pwr == -dev->prev_pwr_diff)))
diff_pwr = 0 ;
else
dev->prev_pwr_diff = diff_pwr;
diff_pwr += (diff_pwr > 0 ) ? 2048 : -2048 ;
diff_pwr /= 4096 ;
dev_dbg(dev->dev, "final diff: %08x\n" , diff_pwr);
val = mt7601u_rr(dev, MT_TX_ALC_CFG_1);
curr_pwr = s6_to_int(FIELD_GET(MT_TX_ALC_CFG_1_TEMP_COMP, val));
diff_pwr += curr_pwr;
val = (val & ~MT_TX_ALC_CFG_1_TEMP_COMP) | int_to_s6(diff_pwr);
mt7601u_wr(dev, MT_TX_ALC_CFG_1, val);
return mt7601u_mcu_tssi_read_kick(dev, hvga);
}
static u8 mt7601u_agc_default(struct mt7601u_dev *dev)
{
return (dev->ee->lna_gain - 8 ) * 2 + 0 x34;
}
static void mt7601u_agc_reset(struct mt7601u_dev *dev)
{
u8 agc = mt7601u_agc_default(dev);
mt7601u_bbp_wr(dev, 66 , agc);
}
void mt7601u_agc_save(struct mt7601u_dev *dev)
{
dev->agc_save = mt7601u_bbp_rr(dev, 66 );
}
void mt7601u_agc_restore(struct mt7601u_dev *dev)
{
mt7601u_bbp_wr(dev, 66 , dev->agc_save);
}
static void mt7601u_agc_tune(struct mt7601u_dev *dev)
{
u8 val = mt7601u_agc_default(dev);
long avg_rssi;
if (test_bit(MT7601U_STATE_SCANNING, &dev->state))
return ;
/* Note: only in STA mode and not dozing; perhaps do this only if
* there is enough rssi updates since last run?
* Rssi updates are only on beacons and U2M so should work...
*/
spin_lock_bh(&dev->con_mon_lock);
avg_rssi = ewma_rssi_read(&dev->avg_rssi);
spin_unlock_bh(&dev->con_mon_lock);
if (avg_rssi == 0 )
return ;
avg_rssi = -avg_rssi;
if (avg_rssi <= -70 )
val -= 0 x20;
else if (avg_rssi <= -60 )
val -= 0 x10;
if (val != mt7601u_bbp_rr(dev, 66 ))
mt7601u_bbp_wr(dev, 66 , val);
/* TODO: also if lost a lot of beacons try resetting
* (see RTMPSetAGCInitValue() call in mlme.c).
*/
}
static void mt7601u_phy_calibrate(struct work_struct *work)
{
struct mt7601u_dev *dev = container_of(work, struct mt7601u_dev,
cal_work.work);
mt7601u_agc_tune(dev);
mt7601u_tssi_cal(dev);
/* If TSSI calibration was run it already updated temperature. */
if (!dev->ee->tssi_enabled)
dev->raw_temp = mt7601u_read_temp(dev);
mt7601u_temp_comp(dev, true ); /* TODO: find right value for @on */
ieee80211_queue_delayed_work(dev->hw, &dev->cal_work,
MT_CALIBRATE_INTERVAL);
}
static unsigned long
__mt7601u_phy_freq_cal(struct mt7601u_dev *dev, s8 last_offset, u8 phy_mode)
{
u8 activate_threshold, deactivate_threshold;
trace_freq_cal_offset(dev, phy_mode, last_offset);
/* No beacons received - reschedule soon */
if (last_offset == MT_FREQ_OFFSET_INVALID)
return MT_FREQ_CAL_ADJ_INTERVAL;
switch (phy_mode) {
case MT_PHY_TYPE_CCK:
activate_threshold = 19 ;
deactivate_threshold = 5 ;
break ;
case MT_PHY_TYPE_OFDM:
activate_threshold = 102 ;
deactivate_threshold = 32 ;
break ;
case MT_PHY_TYPE_HT:
case MT_PHY_TYPE_HT_GF:
activate_threshold = 82 ;
deactivate_threshold = 20 ;
break ;
default :
WARN_ON(1 );
return MT_FREQ_CAL_CHECK_INTERVAL;
}
if (abs(last_offset) >= activate_threshold)
dev->freq_cal.adjusting = true ;
else if (abs(last_offset) <= deactivate_threshold)
dev->freq_cal.adjusting = false ;
if (!dev->freq_cal.adjusting)
return MT_FREQ_CAL_CHECK_INTERVAL;
if (last_offset > deactivate_threshold) {
if (dev->freq_cal.freq > 0 )
dev->freq_cal.freq--;
else
dev->freq_cal.adjusting = false ;
} else if (last_offset < -deactivate_threshold) {
if (dev->freq_cal.freq < 0 xbf)
dev->freq_cal.freq++;
else
dev->freq_cal.adjusting = false ;
}
trace_freq_cal_adjust(dev, dev->freq_cal.freq);
mt7601u_rf_wr(dev, 0 , 12 , dev->freq_cal.freq);
mt7601u_vco_cal(dev);
return dev->freq_cal.adjusting ? MT_FREQ_CAL_ADJ_INTERVAL :
MT_FREQ_CAL_CHECK_INTERVAL;
}
static void mt7601u_phy_freq_cal(struct work_struct *work)
{
struct mt7601u_dev *dev = container_of(work, struct mt7601u_dev,
freq_cal.work.work);
s8 last_offset;
u8 phy_mode;
unsigned long delay;
spin_lock_bh(&dev->con_mon_lock);
last_offset = dev->bcn_freq_off;
phy_mode = dev->bcn_phy_mode;
spin_unlock_bh(&dev->con_mon_lock);
delay = __mt7601u_phy_freq_cal(dev, last_offset, phy_mode);
ieee80211_queue_delayed_work(dev->hw, &dev->freq_cal.work, delay);
spin_lock_bh(&dev->con_mon_lock);
dev->bcn_freq_off = MT_FREQ_OFFSET_INVALID;
spin_unlock_bh(&dev->con_mon_lock);
}
void mt7601u_phy_con_cal_onoff(struct mt7601u_dev *dev,
struct ieee80211_bss_conf *info)
{
struct ieee80211_vif *vif = container_of(info, struct ieee80211_vif,
bss_conf);
if (!vif->cfg.assoc)
cancel_delayed_work_sync(&dev->freq_cal.work);
/* Start/stop collecting beacon data */
spin_lock_bh(&dev->con_mon_lock);
ether_addr_copy(dev->ap_bssid, info->bssid);
ewma_rssi_init(&dev->avg_rssi);
dev->bcn_freq_off = MT_FREQ_OFFSET_INVALID;
spin_unlock_bh(&dev->con_mon_lock);
dev->freq_cal.freq = dev->ee->rf_freq_off;
dev->freq_cal.enabled = vif->cfg.assoc;
dev->freq_cal.adjusting = false ;
if (vif->cfg.assoc)
ieee80211_queue_delayed_work(dev->hw, &dev->freq_cal.work,
MT_FREQ_CAL_INIT_DELAY);
}
static int mt7601u_init_cal(struct mt7601u_dev *dev)
{
u32 mac_ctrl;
int ret;
dev->raw_temp = mt7601u_read_bootup_temp(dev);
dev->curr_temp = (dev->raw_temp - dev->ee->ref_temp) *
MT_EE_TEMPERATURE_SLOPE;
dev->dpd_temp = dev->curr_temp;
mac_ctrl = mt7601u_rr(dev, MT_MAC_SYS_CTRL);
ret = mt7601u_mcu_calibrate(dev, MCU_CAL_R, 0 );
if (ret)
return ret;
ret = mt7601u_rf_rr(dev, 0 , 4 );
if (ret < 0 )
return ret;
ret |= 0 x80;
ret = mt7601u_rf_wr(dev, 0 , 4 , ret);
if (ret)
return ret;
msleep(2 );
ret = mt7601u_mcu_calibrate(dev, MCU_CAL_TXDCOC, 0 );
if (ret)
return ret;
mt7601u_rxdc_cal(dev);
ret = mt7601u_set_bw_filter(dev, true );
if (ret)
return ret;
ret = mt7601u_mcu_calibrate(dev, MCU_CAL_LOFT, 0 );
if (ret)
return ret;
ret = mt7601u_mcu_calibrate(dev, MCU_CAL_TXIQ, 0 );
if (ret)
return ret;
ret = mt7601u_mcu_calibrate(dev, MCU_CAL_RXIQ, 0 );
if (ret)
return ret;
ret = mt7601u_mcu_calibrate(dev, MCU_CAL_DPD, dev->dpd_temp);
if (ret)
return ret;
mt7601u_rxdc_cal(dev);
mt7601u_tssi_dc_gain_cal(dev);
mt7601u_wr(dev, MT_MAC_SYS_CTRL, mac_ctrl);
mt7601u_temp_comp(dev, true );
return 0 ;
}
int mt7601u_bbp_set_bw(struct mt7601u_dev *dev, int bw)
{
u32 val, old;
if (bw == dev->bw) {
/* Vendor driver does the rmc even when no change is needed. */
mt7601u_bbp_rmc(dev, 4 , 0 x18, bw == MT_BW_20 ? 0 : 0 x10);
return 0 ;
}
dev->bw = bw;
/* Stop MAC for the time of bw change */
old = mt7601u_rr(dev, MT_MAC_SYS_CTRL);
val = old & ~(MT_MAC_SYS_CTRL_ENABLE_TX | MT_MAC_SYS_CTRL_ENABLE_RX);
mt7601u_wr(dev, MT_MAC_SYS_CTRL, val);
mt76_poll(dev, MT_MAC_STATUS, MT_MAC_STATUS_TX | MT_MAC_STATUS_RX,
0 , 500000 );
mt7601u_bbp_rmc(dev, 4 , 0 x18, bw == MT_BW_20 ? 0 : 0 x10);
mt7601u_wr(dev, MT_MAC_SYS_CTRL, old);
return mt7601u_load_bbp_temp_table_bw(dev);
}
/**
* mt7601u_set_rx_path - set rx path in BBP
* @dev: pointer to adapter structure
* @path: rx path to set values are 0-based
*/
void mt7601u_set_rx_path(struct mt7601u_dev *dev, u8 path)
{
mt7601u_bbp_rmw(dev, 3 , 0 x18, path << 3 );
}
/**
* mt7601u_set_tx_dac - set which tx DAC to use
* @dev: pointer to adapter structure
* @dac: DAC index, values are 0-based
*/
void mt7601u_set_tx_dac(struct mt7601u_dev *dev, u8 dac)
{
mt7601u_bbp_rmc(dev, 1 , 0 x18, dac << 3 );
}
int mt7601u_phy_init(struct mt7601u_dev *dev)
{
int ret;
dev->rf_pa_mode[0 ] = mt7601u_rr(dev, MT_RF_PA_MODE_CFG0);
dev->rf_pa_mode[1 ] = mt7601u_rr(dev, MT_RF_PA_MODE_CFG1);
ret = mt7601u_rf_wr(dev, 0 , 12 , dev->ee->rf_freq_off);
if (ret)
return ret;
ret = mt7601u_write_reg_pairs(dev, 0 , rf_central,
ARRAY_SIZE(rf_central));
if (ret)
return ret;
ret = mt7601u_write_reg_pairs(dev, 0 , rf_channel,
ARRAY_SIZE(rf_channel));
if (ret)
return ret;
ret = mt7601u_write_reg_pairs(dev, 0 , rf_vga, ARRAY_SIZE(rf_vga));
if (ret)
return ret;
ret = mt7601u_init_cal(dev);
if (ret)
return ret;
dev->prev_pwr_diff = 100 ;
INIT_DELAYED_WORK(&dev->cal_work, mt7601u_phy_calibrate);
INIT_DELAYED_WORK(&dev->freq_cal.work, mt7601u_phy_freq_cal);
return 0 ;
}
Messung V0.5 in Prozent C=96 H=91 G=93
¤ Dauer der Verarbeitung: 0.15 Sekunden
(vorverarbeitet am 2026-06-07)
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