root/drivers/net/wireless/mediatek/mt76/mt76x2/init.c
// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
 */

#include "mt76x2.h"
#include "eeprom.h"
#include "../mt76x02_phy.h"

int mt76x2_set_sar_specs(struct ieee80211_hw *hw,
                         const struct cfg80211_sar_specs *sar)
{
        int err = -EINVAL, power = hw->conf.power_level * 2;
        struct mt76x02_dev *dev = hw->priv;
        struct mt76_phy *mphy = &dev->mphy;

        mutex_lock(&dev->mt76.mutex);
        if (!cfg80211_chandef_valid(&mphy->chandef))
                goto out;

        err = mt76_init_sar_power(hw, sar);
        if (err)
                goto out;

        dev->txpower_conf = mt76_get_sar_power(mphy, mphy->chandef.chan,
                                               power);
        /* convert to per-chain power for 2x2 devices */
        dev->txpower_conf -= 6;

        if (test_bit(MT76_STATE_RUNNING, &mphy->state))
                mt76x2_phy_set_txpower(dev);
out:
        mutex_unlock(&dev->mt76.mutex);

        return err;
}
EXPORT_SYMBOL_GPL(mt76x2_set_sar_specs);

static void
mt76x2_set_wlan_state(struct mt76x02_dev *dev, bool enable)
{
        u32 val = mt76_rr(dev, MT_WLAN_FUN_CTRL);

        if (enable)
                val |= (MT_WLAN_FUN_CTRL_WLAN_EN |
                        MT_WLAN_FUN_CTRL_WLAN_CLK_EN);
        else
                val &= ~(MT_WLAN_FUN_CTRL_WLAN_EN |
                         MT_WLAN_FUN_CTRL_WLAN_CLK_EN);

        mt76_wr(dev, MT_WLAN_FUN_CTRL, val);
        udelay(20);
}

void mt76x2_reset_wlan(struct mt76x02_dev *dev, bool enable)
{
        u32 val;

        if (!enable)
                goto out;

        val = mt76_rr(dev, MT_WLAN_FUN_CTRL);

        val &= ~MT_WLAN_FUN_CTRL_FRC_WL_ANT_SEL;

        if (val & MT_WLAN_FUN_CTRL_WLAN_EN) {
                val |= MT_WLAN_FUN_CTRL_WLAN_RESET_RF;
                mt76_wr(dev, MT_WLAN_FUN_CTRL, val);
                udelay(20);

                val &= ~MT_WLAN_FUN_CTRL_WLAN_RESET_RF;
        }

        mt76_wr(dev, MT_WLAN_FUN_CTRL, val);
        udelay(20);

out:
        mt76x2_set_wlan_state(dev, enable);
}
EXPORT_SYMBOL_GPL(mt76x2_reset_wlan);

void mt76_write_mac_initvals(struct mt76x02_dev *dev)
{
#define DEFAULT_PROT_CFG_CCK                            \
        (FIELD_PREP(MT_PROT_CFG_RATE, 0x3) |            \
         FIELD_PREP(MT_PROT_CFG_NAV, 1) |               \
         FIELD_PREP(MT_PROT_CFG_TXOP_ALLOW, 0x3f) |     \
         MT_PROT_CFG_RTS_THRESH)

#define DEFAULT_PROT_CFG_OFDM                           \
        (FIELD_PREP(MT_PROT_CFG_RATE, 0x2004) |         \
         FIELD_PREP(MT_PROT_CFG_NAV, 1) |                       \
         FIELD_PREP(MT_PROT_CFG_TXOP_ALLOW, 0x3f) |     \
         MT_PROT_CFG_RTS_THRESH)

#define DEFAULT_PROT_CFG_20                             \
        (FIELD_PREP(MT_PROT_CFG_RATE, 0x2004) |         \
         FIELD_PREP(MT_PROT_CFG_CTRL, 1) |              \
         FIELD_PREP(MT_PROT_CFG_NAV, 1) |                       \
         FIELD_PREP(MT_PROT_CFG_TXOP_ALLOW, 0x17))

#define DEFAULT_PROT_CFG_40                             \
        (FIELD_PREP(MT_PROT_CFG_RATE, 0x2084) |         \
         FIELD_PREP(MT_PROT_CFG_CTRL, 1) |              \
         FIELD_PREP(MT_PROT_CFG_NAV, 1) |                       \
         FIELD_PREP(MT_PROT_CFG_TXOP_ALLOW, 0x3f))

        static const struct mt76_reg_pair vals[] = {
                /* Copied from MediaTek reference source */
                { MT_PBF_SYS_CTRL,              0x00080c00 },
                { MT_PBF_CFG,                   0x1efebcff },
                { MT_FCE_PSE_CTRL,              0x00000001 },
                { MT_MAC_SYS_CTRL,              0x00000000 },
                { MT_MAX_LEN_CFG,               0x003e3f00 },
                { MT_AMPDU_MAX_LEN_20M1S,       0xaaa99887 },
                { MT_AMPDU_MAX_LEN_20M2S,       0x000000aa },
                { MT_XIFS_TIME_CFG,             0x33a40d0a },
                { MT_BKOFF_SLOT_CFG,            0x00000209 },
                { MT_TBTT_SYNC_CFG,             0x00422010 },
                { MT_PWR_PIN_CFG,               0x00000000 },
                { 0x1238,                       0x001700c8 },
                { MT_TX_SW_CFG0,                0x00101001 },
                { MT_TX_SW_CFG1,                0x00010000 },
                { MT_TX_SW_CFG2,                0x00000000 },
                { MT_TXOP_CTRL_CFG,             0x0400583f },
                { MT_TX_RTS_CFG,                0x00ffff20 },
                { MT_TX_TIMEOUT_CFG,            0x000a2290 },
                { MT_TX_RETRY_CFG,              0x47f01f0f },
                { MT_EXP_ACK_TIME,              0x002c00dc },
                { MT_TX_PROT_CFG6,              0xe3f42004 },
                { MT_TX_PROT_CFG7,              0xe3f42084 },
                { MT_TX_PROT_CFG8,              0xe3f42104 },
                { MT_PIFS_TX_CFG,               0x00060fff },
                { MT_RX_FILTR_CFG,              0x00015f97 },
                { MT_LEGACY_BASIC_RATE,         0x0000017f },
                { MT_HT_BASIC_RATE,             0x00004003 },
                { MT_PN_PAD_MODE,               0x00000003 },
                { MT_TXOP_HLDR_ET,              0x00000002 },
                { 0xa44,                        0x00000000 },
                { MT_HEADER_TRANS_CTRL_REG,     0x00000000 },
                { MT_TSO_CTRL,                  0x00000000 },
                { MT_AUX_CLK_CFG,               0x00000000 },
                { MT_DACCLK_EN_DLY_CFG,         0x00000000 },
                { MT_TX_ALC_CFG_4,              0x00000000 },
                { MT_TX_ALC_VGA3,               0x00000000 },
                { MT_TX_PWR_CFG_0,              0x3a3a3a3a },
                { MT_TX_PWR_CFG_1,              0x3a3a3a3a },
                { MT_TX_PWR_CFG_2,              0x3a3a3a3a },
                { MT_TX_PWR_CFG_3,              0x3a3a3a3a },
                { MT_TX_PWR_CFG_4,              0x3a3a3a3a },
                { MT_TX_PWR_CFG_7,              0x3a3a3a3a },
                { MT_TX_PWR_CFG_8,              0x0000003a },
                { MT_TX_PWR_CFG_9,              0x0000003a },
                { MT_EFUSE_CTRL,                0x0000d000 },
                { MT_PAUSE_ENABLE_CONTROL1,     0x0000000a },
                { MT_FCE_WLAN_FLOW_CONTROL1,    0x60401c18 },
                { MT_WPDMA_DELAY_INT_CFG,       0x94ff0000 },
                { MT_TX_SW_CFG3,                0x00000004 },
                { MT_HT_FBK_TO_LEGACY,          0x00001818 },
                { MT_VHT_HT_FBK_CFG1,           0xedcba980 },
                { MT_PROT_AUTO_TX_CFG,          0x00830083 },
                { MT_HT_CTRL_CFG,               0x000001ff },
                { MT_TX_LINK_CFG,               0x00001020 },
        };
        struct mt76_reg_pair prot_vals[] = {
                { MT_CCK_PROT_CFG,              DEFAULT_PROT_CFG_CCK },
                { MT_OFDM_PROT_CFG,             DEFAULT_PROT_CFG_OFDM },
                { MT_MM20_PROT_CFG,             DEFAULT_PROT_CFG_20 },
                { MT_MM40_PROT_CFG,             DEFAULT_PROT_CFG_40 },
                { MT_GF20_PROT_CFG,             DEFAULT_PROT_CFG_20 },
                { MT_GF40_PROT_CFG,             DEFAULT_PROT_CFG_40 },
        };

        mt76_wr_rp(dev, 0, vals, ARRAY_SIZE(vals));
        mt76_wr_rp(dev, 0, prot_vals, ARRAY_SIZE(prot_vals));
}
EXPORT_SYMBOL_GPL(mt76_write_mac_initvals);

void mt76x2_init_txpower(struct mt76x02_dev *dev,
                         struct ieee80211_supported_band *sband)
{
        struct ieee80211_channel *chan;
        struct mt76x2_tx_power_info txp;
        struct mt76x02_rate_power t = {};
        int i;

        for (i = 0; i < sband->n_channels; i++) {
                chan = &sband->channels[i];

                mt76x2_get_power_info(dev, &txp, chan);
                mt76x2_get_rate_power(dev, &t, chan);

                chan->orig_mpwr = mt76x02_get_max_rate_power(&t) +
                                  txp.target_power;
                chan->orig_mpwr = DIV_ROUND_UP(chan->orig_mpwr, 2);

                /* convert to combined output power on 2x2 devices */
                chan->orig_mpwr += 3;
                chan->max_power = min_t(int, chan->max_reg_power,
                                        chan->orig_mpwr);
        }
}
EXPORT_SYMBOL_GPL(mt76x2_init_txpower);