root/drivers/net/wireless/broadcom/b43/phy_g.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*

  Broadcom B43 wireless driver
  IEEE 802.11g PHY driver

  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
  Copyright (c) 2005-2007 Stefano Brivio <stefano.brivio@polimi.it>
  Copyright (c) 2005-2008 Michael Buesch <m@bues.ch>
  Copyright (c) 2005, 2006 Danny van Dyk <kugelfang@gentoo.org>
  Copyright (c) 2005, 2006 Andreas Jaggi <andreas.jaggi@waterwave.ch>


*/

#include "b43.h"
#include "phy_g.h"
#include "phy_common.h"
#include "lo.h"
#include "main.h"
#include "wa.h"

#include <linux/bitrev.h>
#include <linux/slab.h>


static const s8 b43_tssi2dbm_g_table[] = {
        77, 77, 77, 76,
        76, 76, 75, 75,
        74, 74, 73, 73,
        73, 72, 72, 71,
        71, 70, 70, 69,
        68, 68, 67, 67,
        66, 65, 65, 64,
        63, 63, 62, 61,
        60, 59, 58, 57,
        56, 55, 54, 53,
        52, 50, 49, 47,
        45, 43, 40, 37,
        33, 28, 22, 14,
        5, -7, -20, -20,
        -20, -20, -20, -20,
        -20, -20, -20, -20,
};

static const u8 b43_radio_channel_codes_bg[] = {
        12, 17, 22, 27,
        32, 37, 42, 47,
        52, 57, 62, 67,
        72, 84,
};


static void b43_calc_nrssi_threshold(struct b43_wldev *dev);


#define bitrev4(tmp) (bitrev8(tmp) >> 4)


/* Get the freq, as it has to be written to the device. */
static inline u16 channel2freq_bg(u8 channel)
{
        B43_WARN_ON(!(channel >= 1 && channel <= 14));

        return b43_radio_channel_codes_bg[channel - 1];
}

static void generate_rfatt_list(struct b43_wldev *dev,
                                struct b43_rfatt_list *list)
{
        struct b43_phy *phy = &dev->phy;

        /* APHY.rev < 5 || GPHY.rev < 6 */
        static const struct b43_rfatt rfatt_0[] = {
                {.att = 3,.with_padmix = 0,},
                {.att = 1,.with_padmix = 0,},
                {.att = 5,.with_padmix = 0,},
                {.att = 7,.with_padmix = 0,},
                {.att = 9,.with_padmix = 0,},
                {.att = 2,.with_padmix = 0,},
                {.att = 0,.with_padmix = 0,},
                {.att = 4,.with_padmix = 0,},
                {.att = 6,.with_padmix = 0,},
                {.att = 8,.with_padmix = 0,},
                {.att = 1,.with_padmix = 1,},
                {.att = 2,.with_padmix = 1,},
                {.att = 3,.with_padmix = 1,},
                {.att = 4,.with_padmix = 1,},
        };
        /* Radio.rev == 8 && Radio.version == 0x2050 */
        static const struct b43_rfatt rfatt_1[] = {
                {.att = 2,.with_padmix = 1,},
                {.att = 4,.with_padmix = 1,},
                {.att = 6,.with_padmix = 1,},
                {.att = 8,.with_padmix = 1,},
                {.att = 10,.with_padmix = 1,},
                {.att = 12,.with_padmix = 1,},
                {.att = 14,.with_padmix = 1,},
        };
        /* Otherwise */
        static const struct b43_rfatt rfatt_2[] = {
                {.att = 0,.with_padmix = 1,},
                {.att = 2,.with_padmix = 1,},
                {.att = 4,.with_padmix = 1,},
                {.att = 6,.with_padmix = 1,},
                {.att = 8,.with_padmix = 1,},
                {.att = 9,.with_padmix = 1,},
                {.att = 9,.with_padmix = 1,},
        };

        if (!b43_has_hardware_pctl(dev)) {
                /* Software pctl */
                list->list = rfatt_0;
                list->len = ARRAY_SIZE(rfatt_0);
                list->min_val = 0;
                list->max_val = 9;
                return;
        }
        if (phy->radio_ver == 0x2050 && phy->radio_rev == 8) {
                /* Hardware pctl */
                list->list = rfatt_1;
                list->len = ARRAY_SIZE(rfatt_1);
                list->min_val = 0;
                list->max_val = 14;
                return;
        }
        /* Hardware pctl */
        list->list = rfatt_2;
        list->len = ARRAY_SIZE(rfatt_2);
        list->min_val = 0;
        list->max_val = 9;
}

static void generate_bbatt_list(struct b43_wldev *dev,
                                struct b43_bbatt_list *list)
{
        static const struct b43_bbatt bbatt_0[] = {
                {.att = 0,},
                {.att = 1,},
                {.att = 2,},
                {.att = 3,},
                {.att = 4,},
                {.att = 5,},
                {.att = 6,},
                {.att = 7,},
                {.att = 8,},
        };

        list->list = bbatt_0;
        list->len = ARRAY_SIZE(bbatt_0);
        list->min_val = 0;
        list->max_val = 8;
}

static void b43_shm_clear_tssi(struct b43_wldev *dev)
{
        b43_shm_write16(dev, B43_SHM_SHARED, 0x0058, 0x7F7F);
        b43_shm_write16(dev, B43_SHM_SHARED, 0x005a, 0x7F7F);
        b43_shm_write16(dev, B43_SHM_SHARED, 0x0070, 0x7F7F);
        b43_shm_write16(dev, B43_SHM_SHARED, 0x0072, 0x7F7F);
}

/* Synthetic PU workaround */
static void b43_synth_pu_workaround(struct b43_wldev *dev, u8 channel)
{
        struct b43_phy *phy = &dev->phy;

        might_sleep();

        if (phy->radio_ver != 0x2050 || phy->radio_rev >= 6) {
                /* We do not need the workaround. */
                return;
        }

        if (channel <= 10) {
                b43_write16(dev, B43_MMIO_CHANNEL,
                            channel2freq_bg(channel + 4));
        } else {
                b43_write16(dev, B43_MMIO_CHANNEL, channel2freq_bg(1));
        }
        msleep(1);
        b43_write16(dev, B43_MMIO_CHANNEL, channel2freq_bg(channel));
}

/* Set the baseband attenuation value on chip. */
void b43_gphy_set_baseband_attenuation(struct b43_wldev *dev,
                                       u16 baseband_attenuation)
{
        struct b43_phy *phy = &dev->phy;

        if (phy->analog == 0) {
                b43_write16(dev, B43_MMIO_PHY0, (b43_read16(dev, B43_MMIO_PHY0)
                                                 & 0xFFF0) |
                            baseband_attenuation);
        } else if (phy->analog > 1) {
                b43_phy_maskset(dev, B43_PHY_DACCTL, 0xFFC3, (baseband_attenuation << 2));
        } else {
                b43_phy_maskset(dev, B43_PHY_DACCTL, 0xFF87, (baseband_attenuation << 3));
        }
}

/* Adjust the transmission power output (G-PHY) */
static void b43_set_txpower_g(struct b43_wldev *dev,
                              const struct b43_bbatt *bbatt,
                              const struct b43_rfatt *rfatt, u8 tx_control)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        struct b43_txpower_lo_control *lo = gphy->lo_control;
        u16 bb, rf;
        u16 tx_bias, tx_magn;

        bb = bbatt->att;
        rf = rfatt->att;
        tx_bias = lo->tx_bias;
        tx_magn = lo->tx_magn;
        if (unlikely(tx_bias == 0xFF))
                tx_bias = 0;

        /* Save the values for later. Use memmove, because it's valid
         * to pass &gphy->rfatt as rfatt pointer argument. Same for bbatt. */
        gphy->tx_control = tx_control;
        memmove(&gphy->rfatt, rfatt, sizeof(*rfatt));
        gphy->rfatt.with_padmix = !!(tx_control & B43_TXCTL_TXMIX);
        memmove(&gphy->bbatt, bbatt, sizeof(*bbatt));

        if (b43_debug(dev, B43_DBG_XMITPOWER)) {
                b43dbg(dev->wl, "Tuning TX-power to bbatt(%u), "
                       "rfatt(%u), tx_control(0x%02X), "
                       "tx_bias(0x%02X), tx_magn(0x%02X)\n",
                       bb, rf, tx_control, tx_bias, tx_magn);
        }

        b43_gphy_set_baseband_attenuation(dev, bb);
        b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_RFATT, rf);
        if (phy->radio_ver == 0x2050 && phy->radio_rev == 8) {
                b43_radio_write16(dev, 0x43,
                                  (rf & 0x000F) | (tx_control & 0x0070));
        } else {
                b43_radio_maskset(dev, 0x43, 0xFFF0, (rf & 0x000F));
                b43_radio_maskset(dev, 0x52, ~0x0070, (tx_control & 0x0070));
        }
        if (has_tx_magnification(phy)) {
                b43_radio_write16(dev, 0x52, tx_magn | tx_bias);
        } else {
                b43_radio_maskset(dev, 0x52, 0xFFF0, (tx_bias & 0x000F));
        }
        b43_lo_g_adjust(dev);
}

/* GPHY_TSSI_Power_Lookup_Table_Init */
static void b43_gphy_tssi_power_lt_init(struct b43_wldev *dev)
{
        struct b43_phy_g *gphy = dev->phy.g;
        int i;
        u16 value;

        for (i = 0; i < 32; i++)
                b43_ofdmtab_write16(dev, 0x3C20, i, gphy->tssi2dbm[i]);
        for (i = 32; i < 64; i++)
                b43_ofdmtab_write16(dev, 0x3C00, i - 32, gphy->tssi2dbm[i]);
        for (i = 0; i < 64; i += 2) {
                value = (u16) gphy->tssi2dbm[i];
                value |= ((u16) gphy->tssi2dbm[i + 1]) << 8;
                b43_phy_write(dev, 0x380 + (i / 2), value);
        }
}

/* GPHY_Gain_Lookup_Table_Init */
static void b43_gphy_gain_lt_init(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        struct b43_txpower_lo_control *lo = gphy->lo_control;
        u16 nr_written = 0;
        u16 tmp;
        u8 rf, bb;

        for (rf = 0; rf < lo->rfatt_list.len; rf++) {
                for (bb = 0; bb < lo->bbatt_list.len; bb++) {
                        if (nr_written >= 0x40)
                                return;
                        tmp = lo->bbatt_list.list[bb].att;
                        tmp <<= 8;
                        if (phy->radio_rev == 8)
                                tmp |= 0x50;
                        else
                                tmp |= 0x40;
                        tmp |= lo->rfatt_list.list[rf].att;
                        b43_phy_write(dev, 0x3C0 + nr_written, tmp);
                        nr_written++;
                }
        }
}

static void b43_set_all_gains(struct b43_wldev *dev,
                              s16 first, s16 second, s16 third)
{
        struct b43_phy *phy = &dev->phy;
        u16 i;
        u16 start = 0x08, end = 0x18;
        u16 tmp;
        u16 table;

        if (phy->rev <= 1) {
                start = 0x10;
                end = 0x20;
        }

        table = B43_OFDMTAB_GAINX;
        if (phy->rev <= 1)
                table = B43_OFDMTAB_GAINX_R1;
        for (i = 0; i < 4; i++)
                b43_ofdmtab_write16(dev, table, i, first);

        for (i = start; i < end; i++)
                b43_ofdmtab_write16(dev, table, i, second);

        if (third != -1) {
                tmp = ((u16) third << 14) | ((u16) third << 6);
                b43_phy_maskset(dev, 0x04A0, 0xBFBF, tmp);
                b43_phy_maskset(dev, 0x04A1, 0xBFBF, tmp);
                b43_phy_maskset(dev, 0x04A2, 0xBFBF, tmp);
        }
        b43_dummy_transmission(dev, false, true);
}

static void b43_set_original_gains(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        u16 i, tmp;
        u16 table;
        u16 start = 0x0008, end = 0x0018;

        if (phy->rev <= 1) {
                start = 0x0010;
                end = 0x0020;
        }

        table = B43_OFDMTAB_GAINX;
        if (phy->rev <= 1)
                table = B43_OFDMTAB_GAINX_R1;
        for (i = 0; i < 4; i++) {
                tmp = (i & 0xFFFC);
                tmp |= (i & 0x0001) << 1;
                tmp |= (i & 0x0002) >> 1;

                b43_ofdmtab_write16(dev, table, i, tmp);
        }

        for (i = start; i < end; i++)
                b43_ofdmtab_write16(dev, table, i, i - start);

        b43_phy_maskset(dev, 0x04A0, 0xBFBF, 0x4040);
        b43_phy_maskset(dev, 0x04A1, 0xBFBF, 0x4040);
        b43_phy_maskset(dev, 0x04A2, 0xBFBF, 0x4000);
        b43_dummy_transmission(dev, false, true);
}

/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */
static void b43_nrssi_hw_write(struct b43_wldev *dev, u16 offset, s16 val)
{
        b43_phy_write(dev, B43_PHY_NRSSILT_CTRL, offset);
        b43_phy_write(dev, B43_PHY_NRSSILT_DATA, (u16) val);
}

/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */
static s16 b43_nrssi_hw_read(struct b43_wldev *dev, u16 offset)
{
        u16 val;

        b43_phy_write(dev, B43_PHY_NRSSILT_CTRL, offset);
        val = b43_phy_read(dev, B43_PHY_NRSSILT_DATA);

        return (s16) val;
}

/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */
static void b43_nrssi_hw_update(struct b43_wldev *dev, u16 val)
{
        u16 i;
        s16 tmp;

        for (i = 0; i < 64; i++) {
                tmp = b43_nrssi_hw_read(dev, i);
                tmp -= val;
                tmp = clamp_val(tmp, -32, 31);
                b43_nrssi_hw_write(dev, i, tmp);
        }
}

/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */
static void b43_nrssi_mem_update(struct b43_wldev *dev)
{
        struct b43_phy_g *gphy = dev->phy.g;
        s16 i, delta;
        s32 tmp;

        delta = 0x1F - gphy->nrssi[0];
        for (i = 0; i < 64; i++) {
                tmp = (i - delta) * gphy->nrssislope;
                tmp /= 0x10000;
                tmp += 0x3A;
                tmp = clamp_val(tmp, 0, 0x3F);
                gphy->nrssi_lt[i] = tmp;
        }
}

static void b43_calc_nrssi_offset(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        u16 backup[20] = { 0 };
        s16 v47F;
        u16 i;
        u16 saved = 0xFFFF;

        backup[0] = b43_phy_read(dev, 0x0001);
        backup[1] = b43_phy_read(dev, 0x0811);
        backup[2] = b43_phy_read(dev, 0x0812);
        if (phy->rev != 1) {    /* Not in specs, but needed to prevent PPC machine check */
                backup[3] = b43_phy_read(dev, 0x0814);
                backup[4] = b43_phy_read(dev, 0x0815);
        }
        backup[5] = b43_phy_read(dev, 0x005A);
        backup[6] = b43_phy_read(dev, 0x0059);
        backup[7] = b43_phy_read(dev, 0x0058);
        backup[8] = b43_phy_read(dev, 0x000A);
        backup[9] = b43_phy_read(dev, 0x0003);
        backup[10] = b43_radio_read16(dev, 0x007A);
        backup[11] = b43_radio_read16(dev, 0x0043);

        b43_phy_mask(dev, 0x0429, 0x7FFF);
        b43_phy_maskset(dev, 0x0001, 0x3FFF, 0x4000);
        b43_phy_set(dev, 0x0811, 0x000C);
        b43_phy_maskset(dev, 0x0812, 0xFFF3, 0x0004);
        b43_phy_mask(dev, 0x0802, ~(0x1 | 0x2));
        if (phy->rev >= 6) {
                backup[12] = b43_phy_read(dev, 0x002E);
                backup[13] = b43_phy_read(dev, 0x002F);
                backup[14] = b43_phy_read(dev, 0x080F);
                backup[15] = b43_phy_read(dev, 0x0810);
                backup[16] = b43_phy_read(dev, 0x0801);
                backup[17] = b43_phy_read(dev, 0x0060);
                backup[18] = b43_phy_read(dev, 0x0014);
                backup[19] = b43_phy_read(dev, 0x0478);

                b43_phy_write(dev, 0x002E, 0);
                b43_phy_write(dev, 0x002F, 0);
                b43_phy_write(dev, 0x080F, 0);
                b43_phy_write(dev, 0x0810, 0);
                b43_phy_set(dev, 0x0478, 0x0100);
                b43_phy_set(dev, 0x0801, 0x0040);
                b43_phy_set(dev, 0x0060, 0x0040);
                b43_phy_set(dev, 0x0014, 0x0200);
        }
        b43_radio_set(dev, 0x007A, 0x0070);
        b43_radio_set(dev, 0x007A, 0x0080);
        udelay(30);

        v47F = (s16) ((b43_phy_read(dev, 0x047F) >> 8) & 0x003F);
        if (v47F >= 0x20)
                v47F -= 0x40;
        if (v47F == 31) {
                for (i = 7; i >= 4; i--) {
                        b43_radio_write16(dev, 0x007B, i);
                        udelay(20);
                        v47F =
                            (s16) ((b43_phy_read(dev, 0x047F) >> 8) & 0x003F);
                        if (v47F >= 0x20)
                                v47F -= 0x40;
                        if (v47F < 31 && saved == 0xFFFF)
                                saved = i;
                }
                if (saved == 0xFFFF)
                        saved = 4;
        } else {
                b43_radio_mask(dev, 0x007A, 0x007F);
                if (phy->rev != 1) {    /* Not in specs, but needed to prevent PPC machine check */
                        b43_phy_set(dev, 0x0814, 0x0001);
                        b43_phy_mask(dev, 0x0815, 0xFFFE);
                }
                b43_phy_set(dev, 0x0811, 0x000C);
                b43_phy_set(dev, 0x0812, 0x000C);
                b43_phy_set(dev, 0x0811, 0x0030);
                b43_phy_set(dev, 0x0812, 0x0030);
                b43_phy_write(dev, 0x005A, 0x0480);
                b43_phy_write(dev, 0x0059, 0x0810);
                b43_phy_write(dev, 0x0058, 0x000D);
                if (phy->rev == 0) {
                        b43_phy_write(dev, 0x0003, 0x0122);
                } else {
                        b43_phy_set(dev, 0x000A, 0x2000);
                }
                if (phy->rev != 1) {    /* Not in specs, but needed to prevent PPC machine check */
                        b43_phy_set(dev, 0x0814, 0x0004);
                        b43_phy_mask(dev, 0x0815, 0xFFFB);
                }
                b43_phy_maskset(dev, 0x0003, 0xFF9F, 0x0040);
                b43_radio_set(dev, 0x007A, 0x000F);
                b43_set_all_gains(dev, 3, 0, 1);
                b43_radio_maskset(dev, 0x0043, 0x00F0, 0x000F);
                udelay(30);
                v47F = (s16) ((b43_phy_read(dev, 0x047F) >> 8) & 0x003F);
                if (v47F >= 0x20)
                        v47F -= 0x40;
                if (v47F == -32) {
                        for (i = 0; i < 4; i++) {
                                b43_radio_write16(dev, 0x007B, i);
                                udelay(20);
                                v47F =
                                    (s16) ((b43_phy_read(dev, 0x047F) >> 8) &
                                           0x003F);
                                if (v47F >= 0x20)
                                        v47F -= 0x40;
                                if (v47F > -31 && saved == 0xFFFF)
                                        saved = i;
                        }
                        if (saved == 0xFFFF)
                                saved = 3;
                } else
                        saved = 0;
        }
        b43_radio_write16(dev, 0x007B, saved);

        if (phy->rev >= 6) {
                b43_phy_write(dev, 0x002E, backup[12]);
                b43_phy_write(dev, 0x002F, backup[13]);
                b43_phy_write(dev, 0x080F, backup[14]);
                b43_phy_write(dev, 0x0810, backup[15]);
        }
        if (phy->rev != 1) {    /* Not in specs, but needed to prevent PPC machine check */
                b43_phy_write(dev, 0x0814, backup[3]);
                b43_phy_write(dev, 0x0815, backup[4]);
        }
        b43_phy_write(dev, 0x005A, backup[5]);
        b43_phy_write(dev, 0x0059, backup[6]);
        b43_phy_write(dev, 0x0058, backup[7]);
        b43_phy_write(dev, 0x000A, backup[8]);
        b43_phy_write(dev, 0x0003, backup[9]);
        b43_radio_write16(dev, 0x0043, backup[11]);
        b43_radio_write16(dev, 0x007A, backup[10]);
        b43_phy_write(dev, 0x0802, b43_phy_read(dev, 0x0802) | 0x1 | 0x2);
        b43_phy_set(dev, 0x0429, 0x8000);
        b43_set_original_gains(dev);
        if (phy->rev >= 6) {
                b43_phy_write(dev, 0x0801, backup[16]);
                b43_phy_write(dev, 0x0060, backup[17]);
                b43_phy_write(dev, 0x0014, backup[18]);
                b43_phy_write(dev, 0x0478, backup[19]);
        }
        b43_phy_write(dev, 0x0001, backup[0]);
        b43_phy_write(dev, 0x0812, backup[2]);
        b43_phy_write(dev, 0x0811, backup[1]);
}

static void b43_calc_nrssi_slope(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        u16 backup[18] = { 0 };
        u16 tmp;
        s16 nrssi0, nrssi1;

        B43_WARN_ON(phy->type != B43_PHYTYPE_G);

        if (phy->radio_rev >= 9)
                return;
        if (phy->radio_rev == 8)
                b43_calc_nrssi_offset(dev);

        b43_phy_mask(dev, B43_PHY_G_CRS, 0x7FFF);
        b43_phy_mask(dev, 0x0802, 0xFFFC);
        backup[7] = b43_read16(dev, 0x03E2);
        b43_write16(dev, 0x03E2, b43_read16(dev, 0x03E2) | 0x8000);
        backup[0] = b43_radio_read16(dev, 0x007A);
        backup[1] = b43_radio_read16(dev, 0x0052);
        backup[2] = b43_radio_read16(dev, 0x0043);
        backup[3] = b43_phy_read(dev, 0x0015);
        backup[4] = b43_phy_read(dev, 0x005A);
        backup[5] = b43_phy_read(dev, 0x0059);
        backup[6] = b43_phy_read(dev, 0x0058);
        backup[8] = b43_read16(dev, 0x03E6);
        backup[9] = b43_read16(dev, B43_MMIO_CHANNEL_EXT);
        if (phy->rev >= 3) {
                backup[10] = b43_phy_read(dev, 0x002E);
                backup[11] = b43_phy_read(dev, 0x002F);
                backup[12] = b43_phy_read(dev, 0x080F);
                backup[13] = b43_phy_read(dev, B43_PHY_G_LO_CONTROL);
                backup[14] = b43_phy_read(dev, 0x0801);
                backup[15] = b43_phy_read(dev, 0x0060);
                backup[16] = b43_phy_read(dev, 0x0014);
                backup[17] = b43_phy_read(dev, 0x0478);
                b43_phy_write(dev, 0x002E, 0);
                b43_phy_write(dev, B43_PHY_G_LO_CONTROL, 0);
                switch (phy->rev) {
                case 4:
                case 6:
                case 7:
                        b43_phy_set(dev, 0x0478, 0x0100);
                        b43_phy_set(dev, 0x0801, 0x0040);
                        break;
                case 3:
                case 5:
                        b43_phy_mask(dev, 0x0801, 0xFFBF);
                        break;
                }
                b43_phy_set(dev, 0x0060, 0x0040);
                b43_phy_set(dev, 0x0014, 0x0200);
        }
        b43_radio_set(dev, 0x007A, 0x0070);
        b43_set_all_gains(dev, 0, 8, 0);
        b43_radio_mask(dev, 0x007A, 0x00F7);
        if (phy->rev >= 2) {
                b43_phy_maskset(dev, 0x0811, 0xFFCF, 0x0030);
                b43_phy_maskset(dev, 0x0812, 0xFFCF, 0x0010);
        }
        b43_radio_set(dev, 0x007A, 0x0080);
        udelay(20);

        nrssi0 = (s16) ((b43_phy_read(dev, 0x047F) >> 8) & 0x003F);
        if (nrssi0 >= 0x0020)
                nrssi0 -= 0x0040;

        b43_radio_mask(dev, 0x007A, 0x007F);
        if (phy->rev >= 2) {
                b43_phy_maskset(dev, 0x0003, 0xFF9F, 0x0040);
        }

        b43_write16(dev, B43_MMIO_CHANNEL_EXT,
                    b43_read16(dev, B43_MMIO_CHANNEL_EXT)
                    | 0x2000);
        b43_radio_set(dev, 0x007A, 0x000F);
        b43_phy_write(dev, 0x0015, 0xF330);
        if (phy->rev >= 2) {
                b43_phy_maskset(dev, 0x0812, 0xFFCF, 0x0020);
                b43_phy_maskset(dev, 0x0811, 0xFFCF, 0x0020);
        }

        b43_set_all_gains(dev, 3, 0, 1);
        if (phy->radio_rev == 8) {
                b43_radio_write16(dev, 0x0043, 0x001F);
        } else {
                tmp = b43_radio_read16(dev, 0x0052) & 0xFF0F;
                b43_radio_write16(dev, 0x0052, tmp | 0x0060);
                tmp = b43_radio_read16(dev, 0x0043) & 0xFFF0;
                b43_radio_write16(dev, 0x0043, tmp | 0x0009);
        }
        b43_phy_write(dev, 0x005A, 0x0480);
        b43_phy_write(dev, 0x0059, 0x0810);
        b43_phy_write(dev, 0x0058, 0x000D);
        udelay(20);
        nrssi1 = (s16) ((b43_phy_read(dev, 0x047F) >> 8) & 0x003F);
        if (nrssi1 >= 0x0020)
                nrssi1 -= 0x0040;
        if (nrssi0 == nrssi1)
                gphy->nrssislope = 0x00010000;
        else
                gphy->nrssislope = 0x00400000 / (nrssi0 - nrssi1);
        if (nrssi0 >= -4) {
                gphy->nrssi[0] = nrssi1;
                gphy->nrssi[1] = nrssi0;
        }
        if (phy->rev >= 3) {
                b43_phy_write(dev, 0x002E, backup[10]);
                b43_phy_write(dev, 0x002F, backup[11]);
                b43_phy_write(dev, 0x080F, backup[12]);
                b43_phy_write(dev, B43_PHY_G_LO_CONTROL, backup[13]);
        }
        if (phy->rev >= 2) {
                b43_phy_mask(dev, 0x0812, 0xFFCF);
                b43_phy_mask(dev, 0x0811, 0xFFCF);
        }

        b43_radio_write16(dev, 0x007A, backup[0]);
        b43_radio_write16(dev, 0x0052, backup[1]);
        b43_radio_write16(dev, 0x0043, backup[2]);
        b43_write16(dev, 0x03E2, backup[7]);
        b43_write16(dev, 0x03E6, backup[8]);
        b43_write16(dev, B43_MMIO_CHANNEL_EXT, backup[9]);
        b43_phy_write(dev, 0x0015, backup[3]);
        b43_phy_write(dev, 0x005A, backup[4]);
        b43_phy_write(dev, 0x0059, backup[5]);
        b43_phy_write(dev, 0x0058, backup[6]);
        b43_synth_pu_workaround(dev, phy->channel);
        b43_phy_set(dev, 0x0802, (0x0001 | 0x0002));
        b43_set_original_gains(dev);
        b43_phy_set(dev, B43_PHY_G_CRS, 0x8000);
        if (phy->rev >= 3) {
                b43_phy_write(dev, 0x0801, backup[14]);
                b43_phy_write(dev, 0x0060, backup[15]);
                b43_phy_write(dev, 0x0014, backup[16]);
                b43_phy_write(dev, 0x0478, backup[17]);
        }
        b43_nrssi_mem_update(dev);
        b43_calc_nrssi_threshold(dev);
}

static void b43_calc_nrssi_threshold(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        s32 a, b;
        s16 tmp16;
        u16 tmp_u16;

        B43_WARN_ON(phy->type != B43_PHYTYPE_G);

        if (!phy->gmode ||
            !(dev->dev->bus_sprom->boardflags_lo & B43_BFL_RSSI)) {
                tmp16 = b43_nrssi_hw_read(dev, 0x20);
                if (tmp16 >= 0x20)
                        tmp16 -= 0x40;
                if (tmp16 < 3) {
                        b43_phy_maskset(dev, 0x048A, 0xF000, 0x09EB);
                } else {
                        b43_phy_maskset(dev, 0x048A, 0xF000, 0x0AED);
                }
        } else {
                if (gphy->interfmode == B43_INTERFMODE_NONWLAN) {
                        a = 0xE;
                        b = 0xA;
                } else if (!gphy->aci_wlan_automatic && gphy->aci_enable) {
                        a = 0x13;
                        b = 0x12;
                } else {
                        a = 0xE;
                        b = 0x11;
                }

                a = a * (gphy->nrssi[1] - gphy->nrssi[0]);
                a += (gphy->nrssi[0] << 6);
                if (a < 32)
                        a += 31;
                else
                        a += 32;
                a = a >> 6;
                a = clamp_val(a, -31, 31);

                b = b * (gphy->nrssi[1] - gphy->nrssi[0]);
                b += (gphy->nrssi[0] << 6);
                if (b < 32)
                        b += 31;
                else
                        b += 32;
                b = b >> 6;
                b = clamp_val(b, -31, 31);

                tmp_u16 = b43_phy_read(dev, 0x048A) & 0xF000;
                tmp_u16 |= ((u32) b & 0x0000003F);
                tmp_u16 |= (((u32) a & 0x0000003F) << 6);
                b43_phy_write(dev, 0x048A, tmp_u16);
        }
}

/* Stack implementation to save/restore values from the
 * interference mitigation code.
 * It is save to restore values in random order.
 */
static void _stack_save(u32 *_stackptr, size_t *stackidx,
                        u8 id, u16 offset, u16 value)
{
        u32 *stackptr = &(_stackptr[*stackidx]);

        B43_WARN_ON(offset & 0xF000);
        B43_WARN_ON(id & 0xF0);
        *stackptr = offset;
        *stackptr |= ((u32) id) << 12;
        *stackptr |= ((u32) value) << 16;
        (*stackidx)++;
        B43_WARN_ON(*stackidx >= B43_INTERFSTACK_SIZE);
}

static u16 _stack_restore(u32 *stackptr, u8 id, u16 offset)
{
        size_t i;

        B43_WARN_ON(offset & 0xF000);
        B43_WARN_ON(id & 0xF0);
        for (i = 0; i < B43_INTERFSTACK_SIZE; i++, stackptr++) {
                if ((*stackptr & 0x00000FFF) != offset)
                        continue;
                if (((*stackptr & 0x0000F000) >> 12) != id)
                        continue;
                return ((*stackptr & 0xFFFF0000) >> 16);
        }
        B43_WARN_ON(1);

        return 0;
}

#define phy_stacksave(offset)                                   \
        do {                                                    \
                _stack_save(stack, &stackidx, 0x1, (offset),    \
                            b43_phy_read(dev, (offset)));       \
        } while (0)
#define phy_stackrestore(offset)                                \
        do {                                                    \
                b43_phy_write(dev, (offset),            \
                                  _stack_restore(stack, 0x1,    \
                                                 (offset)));    \
        } while (0)
#define radio_stacksave(offset)                                         \
        do {                                                            \
                _stack_save(stack, &stackidx, 0x2, (offset),            \
                            b43_radio_read16(dev, (offset)));   \
        } while (0)
#define radio_stackrestore(offset)                                      \
        do {                                                            \
                b43_radio_write16(dev, (offset),                        \
                                      _stack_restore(stack, 0x2,        \
                                                     (offset)));        \
        } while (0)
#define ofdmtab_stacksave(table, offset)                        \
        do {                                                    \
                _stack_save(stack, &stackidx, 0x3, (offset)|(table),    \
                            b43_ofdmtab_read16(dev, (table), (offset)));        \
        } while (0)
#define ofdmtab_stackrestore(table, offset)                     \
        do {                                                    \
                b43_ofdmtab_write16(dev, (table),       (offset),       \
                                  _stack_restore(stack, 0x3,    \
                                                 (offset)|(table)));    \
        } while (0)

static void
b43_radio_interference_mitigation_enable(struct b43_wldev *dev, int mode)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        u16 tmp, flipped;
        size_t stackidx = 0;
        u32 *stack = gphy->interfstack;

        switch (mode) {
        case B43_INTERFMODE_NONWLAN:
                if (phy->rev != 1) {
                        b43_phy_set(dev, 0x042B, 0x0800);
                        b43_phy_mask(dev, B43_PHY_G_CRS, ~0x4000);
                        break;
                }
                radio_stacksave(0x0078);
                tmp = (b43_radio_read16(dev, 0x0078) & 0x001E);
                B43_WARN_ON(tmp > 15);
                flipped = bitrev4(tmp);
                if (flipped < 10 && flipped >= 8)
                        flipped = 7;
                else if (flipped >= 10)
                        flipped -= 3;
                flipped = (bitrev4(flipped) << 1) | 0x0020;
                b43_radio_write16(dev, 0x0078, flipped);

                b43_calc_nrssi_threshold(dev);

                phy_stacksave(0x0406);
                b43_phy_write(dev, 0x0406, 0x7E28);

                b43_phy_set(dev, 0x042B, 0x0800);
                b43_phy_set(dev, B43_PHY_RADIO_BITFIELD, 0x1000);

                phy_stacksave(0x04A0);
                b43_phy_maskset(dev, 0x04A0, 0xC0C0, 0x0008);
                phy_stacksave(0x04A1);
                b43_phy_maskset(dev, 0x04A1, 0xC0C0, 0x0605);
                phy_stacksave(0x04A2);
                b43_phy_maskset(dev, 0x04A2, 0xC0C0, 0x0204);
                phy_stacksave(0x04A8);
                b43_phy_maskset(dev, 0x04A8, 0xC0C0, 0x0803);
                phy_stacksave(0x04AB);
                b43_phy_maskset(dev, 0x04AB, 0xC0C0, 0x0605);

                phy_stacksave(0x04A7);
                b43_phy_write(dev, 0x04A7, 0x0002);
                phy_stacksave(0x04A3);
                b43_phy_write(dev, 0x04A3, 0x287A);
                phy_stacksave(0x04A9);
                b43_phy_write(dev, 0x04A9, 0x2027);
                phy_stacksave(0x0493);
                b43_phy_write(dev, 0x0493, 0x32F5);
                phy_stacksave(0x04AA);
                b43_phy_write(dev, 0x04AA, 0x2027);
                phy_stacksave(0x04AC);
                b43_phy_write(dev, 0x04AC, 0x32F5);
                break;
        case B43_INTERFMODE_MANUALWLAN:
                if (b43_phy_read(dev, 0x0033) & 0x0800)
                        break;

                gphy->aci_enable = true;

                phy_stacksave(B43_PHY_RADIO_BITFIELD);
                phy_stacksave(B43_PHY_G_CRS);
                if (phy->rev < 2) {
                        phy_stacksave(0x0406);
                } else {
                        phy_stacksave(0x04C0);
                        phy_stacksave(0x04C1);
                }
                phy_stacksave(0x0033);
                phy_stacksave(0x04A7);
                phy_stacksave(0x04A3);
                phy_stacksave(0x04A9);
                phy_stacksave(0x04AA);
                phy_stacksave(0x04AC);
                phy_stacksave(0x0493);
                phy_stacksave(0x04A1);
                phy_stacksave(0x04A0);
                phy_stacksave(0x04A2);
                phy_stacksave(0x048A);
                phy_stacksave(0x04A8);
                phy_stacksave(0x04AB);
                if (phy->rev == 2) {
                        phy_stacksave(0x04AD);
                        phy_stacksave(0x04AE);
                } else if (phy->rev >= 3) {
                        phy_stacksave(0x04AD);
                        phy_stacksave(0x0415);
                        phy_stacksave(0x0416);
                        phy_stacksave(0x0417);
                        ofdmtab_stacksave(0x1A00, 0x2);
                        ofdmtab_stacksave(0x1A00, 0x3);
                }
                phy_stacksave(0x042B);
                phy_stacksave(0x048C);

                b43_phy_mask(dev, B43_PHY_RADIO_BITFIELD, ~0x1000);
                b43_phy_maskset(dev, B43_PHY_G_CRS, 0xFFFC, 0x0002);

                b43_phy_write(dev, 0x0033, 0x0800);
                b43_phy_write(dev, 0x04A3, 0x2027);
                b43_phy_write(dev, 0x04A9, 0x1CA8);
                b43_phy_write(dev, 0x0493, 0x287A);
                b43_phy_write(dev, 0x04AA, 0x1CA8);
                b43_phy_write(dev, 0x04AC, 0x287A);

                b43_phy_maskset(dev, 0x04A0, 0xFFC0, 0x001A);
                b43_phy_write(dev, 0x04A7, 0x000D);

                if (phy->rev < 2) {
                        b43_phy_write(dev, 0x0406, 0xFF0D);
                } else if (phy->rev == 2) {
                        b43_phy_write(dev, 0x04C0, 0xFFFF);
                        b43_phy_write(dev, 0x04C1, 0x00A9);
                } else {
                        b43_phy_write(dev, 0x04C0, 0x00C1);
                        b43_phy_write(dev, 0x04C1, 0x0059);
                }

                b43_phy_maskset(dev, 0x04A1, 0xC0FF, 0x1800);
                b43_phy_maskset(dev, 0x04A1, 0xFFC0, 0x0015);
                b43_phy_maskset(dev, 0x04A8, 0xCFFF, 0x1000);
                b43_phy_maskset(dev, 0x04A8, 0xF0FF, 0x0A00);
                b43_phy_maskset(dev, 0x04AB, 0xCFFF, 0x1000);
                b43_phy_maskset(dev, 0x04AB, 0xF0FF, 0x0800);
                b43_phy_maskset(dev, 0x04AB, 0xFFCF, 0x0010);
                b43_phy_maskset(dev, 0x04AB, 0xFFF0, 0x0005);
                b43_phy_maskset(dev, 0x04A8, 0xFFCF, 0x0010);
                b43_phy_maskset(dev, 0x04A8, 0xFFF0, 0x0006);
                b43_phy_maskset(dev, 0x04A2, 0xF0FF, 0x0800);
                b43_phy_maskset(dev, 0x04A0, 0xF0FF, 0x0500);
                b43_phy_maskset(dev, 0x04A2, 0xFFF0, 0x000B);

                if (phy->rev >= 3) {
                        b43_phy_mask(dev, 0x048A, 0x7FFF);
                        b43_phy_maskset(dev, 0x0415, 0x8000, 0x36D8);
                        b43_phy_maskset(dev, 0x0416, 0x8000, 0x36D8);
                        b43_phy_maskset(dev, 0x0417, 0xFE00, 0x016D);
                } else {
                        b43_phy_set(dev, 0x048A, 0x1000);
                        b43_phy_maskset(dev, 0x048A, 0x9FFF, 0x2000);
                        b43_hf_write(dev, b43_hf_read(dev) | B43_HF_ACIW);
                }
                if (phy->rev >= 2) {
                        b43_phy_set(dev, 0x042B, 0x0800);
                }
                b43_phy_maskset(dev, 0x048C, 0xF0FF, 0x0200);
                if (phy->rev == 2) {
                        b43_phy_maskset(dev, 0x04AE, 0xFF00, 0x007F);
                        b43_phy_maskset(dev, 0x04AD, 0x00FF, 0x1300);
                } else if (phy->rev >= 6) {
                        b43_ofdmtab_write16(dev, 0x1A00, 0x3, 0x007F);
                        b43_ofdmtab_write16(dev, 0x1A00, 0x2, 0x007F);
                        b43_phy_mask(dev, 0x04AD, 0x00FF);
                }
                b43_calc_nrssi_slope(dev);
                break;
        default:
                B43_WARN_ON(1);
        }
}

static void
b43_radio_interference_mitigation_disable(struct b43_wldev *dev, int mode)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        u32 *stack = gphy->interfstack;

        switch (mode) {
        case B43_INTERFMODE_NONWLAN:
                if (phy->rev != 1) {
                        b43_phy_mask(dev, 0x042B, ~0x0800);
                        b43_phy_set(dev, B43_PHY_G_CRS, 0x4000);
                        break;
                }
                radio_stackrestore(0x0078);
                b43_calc_nrssi_threshold(dev);
                phy_stackrestore(0x0406);
                b43_phy_mask(dev, 0x042B, ~0x0800);
                if (!dev->bad_frames_preempt) {
                        b43_phy_mask(dev, B43_PHY_RADIO_BITFIELD, ~(1 << 11));
                }
                b43_phy_set(dev, B43_PHY_G_CRS, 0x4000);
                phy_stackrestore(0x04A0);
                phy_stackrestore(0x04A1);
                phy_stackrestore(0x04A2);
                phy_stackrestore(0x04A8);
                phy_stackrestore(0x04AB);
                phy_stackrestore(0x04A7);
                phy_stackrestore(0x04A3);
                phy_stackrestore(0x04A9);
                phy_stackrestore(0x0493);
                phy_stackrestore(0x04AA);
                phy_stackrestore(0x04AC);
                break;
        case B43_INTERFMODE_MANUALWLAN:
                if (!(b43_phy_read(dev, 0x0033) & 0x0800))
                        break;

                gphy->aci_enable = false;

                phy_stackrestore(B43_PHY_RADIO_BITFIELD);
                phy_stackrestore(B43_PHY_G_CRS);
                phy_stackrestore(0x0033);
                phy_stackrestore(0x04A3);
                phy_stackrestore(0x04A9);
                phy_stackrestore(0x0493);
                phy_stackrestore(0x04AA);
                phy_stackrestore(0x04AC);
                phy_stackrestore(0x04A0);
                phy_stackrestore(0x04A7);
                if (phy->rev >= 2) {
                        phy_stackrestore(0x04C0);
                        phy_stackrestore(0x04C1);
                } else
                        phy_stackrestore(0x0406);
                phy_stackrestore(0x04A1);
                phy_stackrestore(0x04AB);
                phy_stackrestore(0x04A8);
                if (phy->rev == 2) {
                        phy_stackrestore(0x04AD);
                        phy_stackrestore(0x04AE);
                } else if (phy->rev >= 3) {
                        phy_stackrestore(0x04AD);
                        phy_stackrestore(0x0415);
                        phy_stackrestore(0x0416);
                        phy_stackrestore(0x0417);
                        ofdmtab_stackrestore(0x1A00, 0x2);
                        ofdmtab_stackrestore(0x1A00, 0x3);
                }
                phy_stackrestore(0x04A2);
                phy_stackrestore(0x048A);
                phy_stackrestore(0x042B);
                phy_stackrestore(0x048C);
                b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_ACIW);
                b43_calc_nrssi_slope(dev);
                break;
        default:
                B43_WARN_ON(1);
        }
}

#undef phy_stacksave
#undef phy_stackrestore
#undef radio_stacksave
#undef radio_stackrestore
#undef ofdmtab_stacksave
#undef ofdmtab_stackrestore

static u16 b43_radio_core_calibration_value(struct b43_wldev *dev)
{
        u16 reg, index, ret;

        static const u8 rcc_table[] = {
                0x02, 0x03, 0x01, 0x0F,
                0x06, 0x07, 0x05, 0x0F,
                0x0A, 0x0B, 0x09, 0x0F,
                0x0E, 0x0F, 0x0D, 0x0F,
        };

        reg = b43_radio_read16(dev, 0x60);
        index = (reg & 0x001E) >> 1;
        ret = rcc_table[index] << 1;
        ret |= (reg & 0x0001);
        ret |= 0x0020;

        return ret;
}

#define LPD(L, P, D)    (((L) << 2) | ((P) << 1) | ((D) << 0))
static u16 radio2050_rfover_val(struct b43_wldev *dev,
                                u16 phy_register, unsigned int lpd)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        struct ssb_sprom *sprom = dev->dev->bus_sprom;

        if (!phy->gmode)
                return 0;

        if (has_loopback_gain(phy)) {
                int max_lb_gain = gphy->max_lb_gain;
                u16 extlna;
                u16 i;

                if (phy->radio_rev == 8)
                        max_lb_gain += 0x3E;
                else
                        max_lb_gain += 0x26;
                if (max_lb_gain >= 0x46) {
                        extlna = 0x3000;
                        max_lb_gain -= 0x46;
                } else if (max_lb_gain >= 0x3A) {
                        extlna = 0x1000;
                        max_lb_gain -= 0x3A;
                } else if (max_lb_gain >= 0x2E) {
                        extlna = 0x2000;
                        max_lb_gain -= 0x2E;
                } else {
                        extlna = 0;
                        max_lb_gain -= 0x10;
                }

                for (i = 0; i < 16; i++) {
                        max_lb_gain -= (i * 6);
                        if (max_lb_gain < 6)
                                break;
                }

                if ((phy->rev < 7) ||
                    !(sprom->boardflags_lo & B43_BFL_EXTLNA)) {
                        if (phy_register == B43_PHY_RFOVER) {
                                return 0x1B3;
                        } else if (phy_register == B43_PHY_RFOVERVAL) {
                                extlna |= (i << 8);
                                switch (lpd) {
                                case LPD(0, 1, 1):
                                        return 0x0F92;
                                case LPD(0, 0, 1):
                                case LPD(1, 0, 1):
                                        return (0x0092 | extlna);
                                case LPD(1, 0, 0):
                                        return (0x0093 | extlna);
                                }
                                B43_WARN_ON(1);
                        }
                        B43_WARN_ON(1);
                } else {
                        if (phy_register == B43_PHY_RFOVER) {
                                return 0x9B3;
                        } else if (phy_register == B43_PHY_RFOVERVAL) {
                                if (extlna)
                                        extlna |= 0x8000;
                                extlna |= (i << 8);
                                switch (lpd) {
                                case LPD(0, 1, 1):
                                        return 0x8F92;
                                case LPD(0, 0, 1):
                                        return (0x8092 | extlna);
                                case LPD(1, 0, 1):
                                        return (0x2092 | extlna);
                                case LPD(1, 0, 0):
                                        return (0x2093 | extlna);
                                }
                                B43_WARN_ON(1);
                        }
                        B43_WARN_ON(1);
                }
        } else {
                if ((phy->rev < 7) ||
                    !(sprom->boardflags_lo & B43_BFL_EXTLNA)) {
                        if (phy_register == B43_PHY_RFOVER) {
                                return 0x1B3;
                        } else if (phy_register == B43_PHY_RFOVERVAL) {
                                switch (lpd) {
                                case LPD(0, 1, 1):
                                        return 0x0FB2;
                                case LPD(0, 0, 1):
                                        return 0x00B2;
                                case LPD(1, 0, 1):
                                        return 0x30B2;
                                case LPD(1, 0, 0):
                                        return 0x30B3;
                                }
                                B43_WARN_ON(1);
                        }
                        B43_WARN_ON(1);
                } else {
                        if (phy_register == B43_PHY_RFOVER) {
                                return 0x9B3;
                        } else if (phy_register == B43_PHY_RFOVERVAL) {
                                switch (lpd) {
                                case LPD(0, 1, 1):
                                        return 0x8FB2;
                                case LPD(0, 0, 1):
                                        return 0x80B2;
                                case LPD(1, 0, 1):
                                        return 0x20B2;
                                case LPD(1, 0, 0):
                                        return 0x20B3;
                                }
                                B43_WARN_ON(1);
                        }
                        B43_WARN_ON(1);
                }
        }
        return 0;
}

struct init2050_saved_values {
        /* Core registers */
        u16 reg_3EC;
        u16 reg_3E6;
        u16 reg_3F4;
        /* Radio registers */
        u16 radio_43;
        u16 radio_51;
        u16 radio_52;
        /* PHY registers */
        u16 phy_pgactl;
        u16 phy_cck_5A;
        u16 phy_cck_59;
        u16 phy_cck_58;
        u16 phy_cck_30;
        u16 phy_rfover;
        u16 phy_rfoverval;
        u16 phy_analogover;
        u16 phy_analogoverval;
        u16 phy_crs0;
        u16 phy_classctl;
        u16 phy_lo_mask;
        u16 phy_lo_ctl;
        u16 phy_syncctl;
};

static u16 b43_radio_init2050(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct init2050_saved_values sav;
        u16 rcc;
        u16 radio78;
        u16 ret;
        u16 i, j;
        u32 tmp1 = 0, tmp2 = 0;

        memset(&sav, 0, sizeof(sav));   /* get rid of "may be used uninitialized..." */

        sav.radio_43 = b43_radio_read16(dev, 0x43);
        sav.radio_51 = b43_radio_read16(dev, 0x51);
        sav.radio_52 = b43_radio_read16(dev, 0x52);
        sav.phy_pgactl = b43_phy_read(dev, B43_PHY_PGACTL);
        sav.phy_cck_5A = b43_phy_read(dev, B43_PHY_CCK(0x5A));
        sav.phy_cck_59 = b43_phy_read(dev, B43_PHY_CCK(0x59));
        sav.phy_cck_58 = b43_phy_read(dev, B43_PHY_CCK(0x58));

        if (phy->type == B43_PHYTYPE_B) {
                sav.phy_cck_30 = b43_phy_read(dev, B43_PHY_CCK(0x30));
                sav.reg_3EC = b43_read16(dev, 0x3EC);

                b43_phy_write(dev, B43_PHY_CCK(0x30), 0xFF);
                b43_write16(dev, 0x3EC, 0x3F3F);
        } else if (phy->gmode || phy->rev >= 2) {
                sav.phy_rfover = b43_phy_read(dev, B43_PHY_RFOVER);
                sav.phy_rfoverval = b43_phy_read(dev, B43_PHY_RFOVERVAL);
                sav.phy_analogover = b43_phy_read(dev, B43_PHY_ANALOGOVER);
                sav.phy_analogoverval =
                    b43_phy_read(dev, B43_PHY_ANALOGOVERVAL);
                sav.phy_crs0 = b43_phy_read(dev, B43_PHY_CRS0);
                sav.phy_classctl = b43_phy_read(dev, B43_PHY_CLASSCTL);

                b43_phy_set(dev, B43_PHY_ANALOGOVER, 0x0003);
                b43_phy_mask(dev, B43_PHY_ANALOGOVERVAL, 0xFFFC);
                b43_phy_mask(dev, B43_PHY_CRS0, 0x7FFF);
                b43_phy_mask(dev, B43_PHY_CLASSCTL, 0xFFFC);
                if (has_loopback_gain(phy)) {
                        sav.phy_lo_mask = b43_phy_read(dev, B43_PHY_LO_MASK);
                        sav.phy_lo_ctl = b43_phy_read(dev, B43_PHY_LO_CTL);

                        if (phy->rev >= 3)
                                b43_phy_write(dev, B43_PHY_LO_MASK, 0xC020);
                        else
                                b43_phy_write(dev, B43_PHY_LO_MASK, 0x8020);
                        b43_phy_write(dev, B43_PHY_LO_CTL, 0);
                }

                b43_phy_write(dev, B43_PHY_RFOVERVAL,
                              radio2050_rfover_val(dev, B43_PHY_RFOVERVAL,
                                                   LPD(0, 1, 1)));
                b43_phy_write(dev, B43_PHY_RFOVER,
                              radio2050_rfover_val(dev, B43_PHY_RFOVER, 0));
        }
        b43_write16(dev, 0x3E2, b43_read16(dev, 0x3E2) | 0x8000);

        sav.phy_syncctl = b43_phy_read(dev, B43_PHY_SYNCCTL);
        b43_phy_mask(dev, B43_PHY_SYNCCTL, 0xFF7F);
        sav.reg_3E6 = b43_read16(dev, 0x3E6);
        sav.reg_3F4 = b43_read16(dev, 0x3F4);

        if (phy->analog == 0) {
                b43_write16(dev, 0x03E6, 0x0122);
        } else {
                if (phy->analog >= 2) {
                        b43_phy_maskset(dev, B43_PHY_CCK(0x03), 0xFFBF, 0x40);
                }
                b43_write16(dev, B43_MMIO_CHANNEL_EXT,
                            (b43_read16(dev, B43_MMIO_CHANNEL_EXT) | 0x2000));
        }

        rcc = b43_radio_core_calibration_value(dev);

        if (phy->type == B43_PHYTYPE_B)
                b43_radio_write16(dev, 0x78, 0x26);
        if (phy->gmode || phy->rev >= 2) {
                b43_phy_write(dev, B43_PHY_RFOVERVAL,
                              radio2050_rfover_val(dev, B43_PHY_RFOVERVAL,
                                                   LPD(0, 1, 1)));
        }
        b43_phy_write(dev, B43_PHY_PGACTL, 0xBFAF);
        b43_phy_write(dev, B43_PHY_CCK(0x2B), 0x1403);
        if (phy->gmode || phy->rev >= 2) {
                b43_phy_write(dev, B43_PHY_RFOVERVAL,
                              radio2050_rfover_val(dev, B43_PHY_RFOVERVAL,
                                                   LPD(0, 0, 1)));
        }
        b43_phy_write(dev, B43_PHY_PGACTL, 0xBFA0);
        b43_radio_set(dev, 0x51, 0x0004);
        if (phy->radio_rev == 8) {
                b43_radio_write16(dev, 0x43, 0x1F);
        } else {
                b43_radio_write16(dev, 0x52, 0);
                b43_radio_maskset(dev, 0x43, 0xFFF0, 0x0009);
        }
        b43_phy_write(dev, B43_PHY_CCK(0x58), 0);

        for (i = 0; i < 16; i++) {
                b43_phy_write(dev, B43_PHY_CCK(0x5A), 0x0480);
                b43_phy_write(dev, B43_PHY_CCK(0x59), 0xC810);
                b43_phy_write(dev, B43_PHY_CCK(0x58), 0x000D);
                if (phy->gmode || phy->rev >= 2) {
                        b43_phy_write(dev, B43_PHY_RFOVERVAL,
                                      radio2050_rfover_val(dev,
                                                           B43_PHY_RFOVERVAL,
                                                           LPD(1, 0, 1)));
                }
                b43_phy_write(dev, B43_PHY_PGACTL, 0xAFB0);
                udelay(10);
                if (phy->gmode || phy->rev >= 2) {
                        b43_phy_write(dev, B43_PHY_RFOVERVAL,
                                      radio2050_rfover_val(dev,
                                                           B43_PHY_RFOVERVAL,
                                                           LPD(1, 0, 1)));
                }
                b43_phy_write(dev, B43_PHY_PGACTL, 0xEFB0);
                udelay(10);
                if (phy->gmode || phy->rev >= 2) {
                        b43_phy_write(dev, B43_PHY_RFOVERVAL,
                                      radio2050_rfover_val(dev,
                                                           B43_PHY_RFOVERVAL,
                                                           LPD(1, 0, 0)));
                }
                b43_phy_write(dev, B43_PHY_PGACTL, 0xFFF0);
                udelay(20);
                tmp1 += b43_phy_read(dev, B43_PHY_LO_LEAKAGE);
                b43_phy_write(dev, B43_PHY_CCK(0x58), 0);
                if (phy->gmode || phy->rev >= 2) {
                        b43_phy_write(dev, B43_PHY_RFOVERVAL,
                                      radio2050_rfover_val(dev,
                                                           B43_PHY_RFOVERVAL,
                                                           LPD(1, 0, 1)));
                }
                b43_phy_write(dev, B43_PHY_PGACTL, 0xAFB0);
        }
        udelay(10);

        b43_phy_write(dev, B43_PHY_CCK(0x58), 0);
        tmp1++;
        tmp1 >>= 9;

        for (i = 0; i < 16; i++) {
                radio78 = (bitrev4(i) << 1) | 0x0020;
                b43_radio_write16(dev, 0x78, radio78);
                udelay(10);
                for (j = 0; j < 16; j++) {
                        b43_phy_write(dev, B43_PHY_CCK(0x5A), 0x0D80);
                        b43_phy_write(dev, B43_PHY_CCK(0x59), 0xC810);
                        b43_phy_write(dev, B43_PHY_CCK(0x58), 0x000D);
                        if (phy->gmode || phy->rev >= 2) {
                                b43_phy_write(dev, B43_PHY_RFOVERVAL,
                                              radio2050_rfover_val(dev,
                                                                   B43_PHY_RFOVERVAL,
                                                                   LPD(1, 0,
                                                                       1)));
                        }
                        b43_phy_write(dev, B43_PHY_PGACTL, 0xAFB0);
                        udelay(10);
                        if (phy->gmode || phy->rev >= 2) {
                                b43_phy_write(dev, B43_PHY_RFOVERVAL,
                                              radio2050_rfover_val(dev,
                                                                   B43_PHY_RFOVERVAL,
                                                                   LPD(1, 0,
                                                                       1)));
                        }
                        b43_phy_write(dev, B43_PHY_PGACTL, 0xEFB0);
                        udelay(10);
                        if (phy->gmode || phy->rev >= 2) {
                                b43_phy_write(dev, B43_PHY_RFOVERVAL,
                                              radio2050_rfover_val(dev,
                                                                   B43_PHY_RFOVERVAL,
                                                                   LPD(1, 0,
                                                                       0)));
                        }
                        b43_phy_write(dev, B43_PHY_PGACTL, 0xFFF0);
                        udelay(10);
                        tmp2 += b43_phy_read(dev, B43_PHY_LO_LEAKAGE);
                        b43_phy_write(dev, B43_PHY_CCK(0x58), 0);
                        if (phy->gmode || phy->rev >= 2) {
                                b43_phy_write(dev, B43_PHY_RFOVERVAL,
                                              radio2050_rfover_val(dev,
                                                                   B43_PHY_RFOVERVAL,
                                                                   LPD(1, 0,
                                                                       1)));
                        }
                        b43_phy_write(dev, B43_PHY_PGACTL, 0xAFB0);
                }
                tmp2++;
                tmp2 >>= 8;
                if (tmp1 < tmp2)
                        break;
        }

        /* Restore the registers */
        b43_phy_write(dev, B43_PHY_PGACTL, sav.phy_pgactl);
        b43_radio_write16(dev, 0x51, sav.radio_51);
        b43_radio_write16(dev, 0x52, sav.radio_52);
        b43_radio_write16(dev, 0x43, sav.radio_43);
        b43_phy_write(dev, B43_PHY_CCK(0x5A), sav.phy_cck_5A);
        b43_phy_write(dev, B43_PHY_CCK(0x59), sav.phy_cck_59);
        b43_phy_write(dev, B43_PHY_CCK(0x58), sav.phy_cck_58);
        b43_write16(dev, 0x3E6, sav.reg_3E6);
        if (phy->analog != 0)
                b43_write16(dev, 0x3F4, sav.reg_3F4);
        b43_phy_write(dev, B43_PHY_SYNCCTL, sav.phy_syncctl);
        b43_synth_pu_workaround(dev, phy->channel);
        if (phy->type == B43_PHYTYPE_B) {
                b43_phy_write(dev, B43_PHY_CCK(0x30), sav.phy_cck_30);
                b43_write16(dev, 0x3EC, sav.reg_3EC);
        } else if (phy->gmode) {
                b43_write16(dev, B43_MMIO_PHY_RADIO,
                            b43_read16(dev, B43_MMIO_PHY_RADIO)
                            & 0x7FFF);
                b43_phy_write(dev, B43_PHY_RFOVER, sav.phy_rfover);
                b43_phy_write(dev, B43_PHY_RFOVERVAL, sav.phy_rfoverval);
                b43_phy_write(dev, B43_PHY_ANALOGOVER, sav.phy_analogover);
                b43_phy_write(dev, B43_PHY_ANALOGOVERVAL,
                              sav.phy_analogoverval);
                b43_phy_write(dev, B43_PHY_CRS0, sav.phy_crs0);
                b43_phy_write(dev, B43_PHY_CLASSCTL, sav.phy_classctl);
                if (has_loopback_gain(phy)) {
                        b43_phy_write(dev, B43_PHY_LO_MASK, sav.phy_lo_mask);
                        b43_phy_write(dev, B43_PHY_LO_CTL, sav.phy_lo_ctl);
                }
        }
        if (i > 15)
                ret = radio78;
        else
                ret = rcc;

        return ret;
}

static void b43_phy_initb5(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        u16 offset, value;
        u8 old_channel;

        if (phy->analog == 1) {
                b43_radio_set(dev, 0x007A, 0x0050);
        }
        if ((dev->dev->board_vendor != SSB_BOARDVENDOR_BCM) &&
            (dev->dev->board_type != SSB_BOARD_BU4306)) {
                value = 0x2120;
                for (offset = 0x00A8; offset < 0x00C7; offset++) {
                        b43_phy_write(dev, offset, value);
                        value += 0x202;
                }
        }
        b43_phy_maskset(dev, 0x0035, 0xF0FF, 0x0700);
        if (phy->radio_ver == 0x2050)
                b43_phy_write(dev, 0x0038, 0x0667);

        if (phy->gmode || phy->rev >= 2) {
                if (phy->radio_ver == 0x2050) {
                        b43_radio_set(dev, 0x007A, 0x0020);
                        b43_radio_set(dev, 0x0051, 0x0004);
                }
                b43_write16(dev, B43_MMIO_PHY_RADIO, 0x0000);

                b43_phy_set(dev, 0x0802, 0x0100);
                b43_phy_set(dev, 0x042B, 0x2000);

                b43_phy_write(dev, 0x001C, 0x186A);

                b43_phy_maskset(dev, 0x0013, 0x00FF, 0x1900);
                b43_phy_maskset(dev, 0x0035, 0xFFC0, 0x0064);
                b43_phy_maskset(dev, 0x005D, 0xFF80, 0x000A);
        }

        if (dev->bad_frames_preempt) {
                b43_phy_set(dev, B43_PHY_RADIO_BITFIELD, (1 << 11));
        }

        if (phy->analog == 1) {
                b43_phy_write(dev, 0x0026, 0xCE00);
                b43_phy_write(dev, 0x0021, 0x3763);
                b43_phy_write(dev, 0x0022, 0x1BC3);
                b43_phy_write(dev, 0x0023, 0x06F9);
                b43_phy_write(dev, 0x0024, 0x037E);
        } else
                b43_phy_write(dev, 0x0026, 0xCC00);
        b43_phy_write(dev, 0x0030, 0x00C6);
        b43_write16(dev, 0x03EC, 0x3F22);

        if (phy->analog == 1)
                b43_phy_write(dev, 0x0020, 0x3E1C);
        else
                b43_phy_write(dev, 0x0020, 0x301C);

        if (phy->analog == 0)
                b43_write16(dev, 0x03E4, 0x3000);

        old_channel = phy->channel;
        /* Force to channel 7, even if not supported. */
        b43_gphy_channel_switch(dev, 7, 0);

        if (phy->radio_ver != 0x2050) {
                b43_radio_write16(dev, 0x0075, 0x0080);
                b43_radio_write16(dev, 0x0079, 0x0081);
        }

        b43_radio_write16(dev, 0x0050, 0x0020);
        b43_radio_write16(dev, 0x0050, 0x0023);

        if (phy->radio_ver == 0x2050) {
                b43_radio_write16(dev, 0x0050, 0x0020);
                b43_radio_write16(dev, 0x005A, 0x0070);
        }

        b43_radio_write16(dev, 0x005B, 0x007B);
        b43_radio_write16(dev, 0x005C, 0x00B0);

        b43_radio_set(dev, 0x007A, 0x0007);

        b43_gphy_channel_switch(dev, old_channel, 0);

        b43_phy_write(dev, 0x0014, 0x0080);
        b43_phy_write(dev, 0x0032, 0x00CA);
        b43_phy_write(dev, 0x002A, 0x88A3);

        b43_set_txpower_g(dev, &gphy->bbatt, &gphy->rfatt, gphy->tx_control);

        if (phy->radio_ver == 0x2050)
                b43_radio_write16(dev, 0x005D, 0x000D);

        b43_write16(dev, 0x03E4, (b43_read16(dev, 0x03E4) & 0xFFC0) | 0x0004);
}

/* https://bcm-v4.sipsolutions.net/802.11/PHY/Init/B6 */
static void b43_phy_initb6(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        u16 offset, val;
        u8 old_channel;

        b43_phy_write(dev, 0x003E, 0x817A);
        b43_radio_write16(dev, 0x007A,
                          (b43_radio_read16(dev, 0x007A) | 0x0058));
        if (phy->radio_rev == 4 || phy->radio_rev == 5) {
                b43_radio_write16(dev, 0x51, 0x37);
                b43_radio_write16(dev, 0x52, 0x70);
                b43_radio_write16(dev, 0x53, 0xB3);
                b43_radio_write16(dev, 0x54, 0x9B);
                b43_radio_write16(dev, 0x5A, 0x88);
                b43_radio_write16(dev, 0x5B, 0x88);
                b43_radio_write16(dev, 0x5D, 0x88);
                b43_radio_write16(dev, 0x5E, 0x88);
                b43_radio_write16(dev, 0x7D, 0x88);
                b43_hf_write(dev, b43_hf_read(dev)
                             | B43_HF_TSSIRPSMW);
        }
        B43_WARN_ON(phy->radio_rev == 6 || phy->radio_rev == 7);        /* We had code for these revs here... */
        if (phy->radio_rev == 8) {
                b43_radio_write16(dev, 0x51, 0);
                b43_radio_write16(dev, 0x52, 0x40);
                b43_radio_write16(dev, 0x53, 0xB7);
                b43_radio_write16(dev, 0x54, 0x98);
                b43_radio_write16(dev, 0x5A, 0x88);
                b43_radio_write16(dev, 0x5B, 0x6B);
                b43_radio_write16(dev, 0x5C, 0x0F);
                if (dev->dev->bus_sprom->boardflags_lo & B43_BFL_ALTIQ) {
                        b43_radio_write16(dev, 0x5D, 0xFA);
                        b43_radio_write16(dev, 0x5E, 0xD8);
                } else {
                        b43_radio_write16(dev, 0x5D, 0xF5);
                        b43_radio_write16(dev, 0x5E, 0xB8);
                }
                b43_radio_write16(dev, 0x0073, 0x0003);
                b43_radio_write16(dev, 0x007D, 0x00A8);
                b43_radio_write16(dev, 0x007C, 0x0001);
                b43_radio_write16(dev, 0x007E, 0x0008);
        }
        val = 0x1E1F;
        for (offset = 0x0088; offset < 0x0098; offset++) {
                b43_phy_write(dev, offset, val);
                val -= 0x0202;
        }
        val = 0x3E3F;
        for (offset = 0x0098; offset < 0x00A8; offset++) {
                b43_phy_write(dev, offset, val);
                val -= 0x0202;
        }
        val = 0x2120;
        for (offset = 0x00A8; offset < 0x00C8; offset++) {
                b43_phy_write(dev, offset, (val & 0x3F3F));
                val += 0x0202;
        }
        if (phy->type == B43_PHYTYPE_G) {
                b43_radio_set(dev, 0x007A, 0x0020);
                b43_radio_set(dev, 0x0051, 0x0004);
                b43_phy_set(dev, 0x0802, 0x0100);
                b43_phy_set(dev, 0x042B, 0x2000);
                b43_phy_write(dev, 0x5B, 0);
                b43_phy_write(dev, 0x5C, 0);
        }

        old_channel = phy->channel;
        if (old_channel >= 8)
                b43_gphy_channel_switch(dev, 1, 0);
        else
                b43_gphy_channel_switch(dev, 13, 0);

        b43_radio_write16(dev, 0x0050, 0x0020);
        b43_radio_write16(dev, 0x0050, 0x0023);
        udelay(40);
        if (phy->radio_rev < 6 || phy->radio_rev == 8) {
                b43_radio_write16(dev, 0x7C, (b43_radio_read16(dev, 0x7C)
                                              | 0x0002));
                b43_radio_write16(dev, 0x50, 0x20);
        }
        if (phy->radio_rev <= 2) {
                b43_radio_write16(dev, 0x50, 0x20);
                b43_radio_write16(dev, 0x5A, 0x70);
                b43_radio_write16(dev, 0x5B, 0x7B);
                b43_radio_write16(dev, 0x5C, 0xB0);
        }
        b43_radio_maskset(dev, 0x007A, 0x00F8, 0x0007);

        b43_gphy_channel_switch(dev, old_channel, 0);

        b43_phy_write(dev, 0x0014, 0x0200);
        if (phy->radio_rev >= 6)
                b43_phy_write(dev, 0x2A, 0x88C2);
        else
                b43_phy_write(dev, 0x2A, 0x8AC0);
        b43_phy_write(dev, 0x0038, 0x0668);
        b43_set_txpower_g(dev, &gphy->bbatt, &gphy->rfatt, gphy->tx_control);
        if (phy->radio_rev == 4 || phy->radio_rev == 5)
                b43_phy_maskset(dev, 0x5D, 0xFF80, 0x0003);
        if (phy->radio_rev <= 2)
                b43_radio_write16(dev, 0x005D, 0x000D);

        if (phy->analog == 4) {
                b43_write16(dev, 0x3E4, 9);
                b43_phy_mask(dev, 0x61, 0x0FFF);
        } else {
                b43_phy_maskset(dev, 0x0002, 0xFFC0, 0x0004);
        }
        if (phy->type == B43_PHYTYPE_B)
                B43_WARN_ON(1);
        else if (phy->type == B43_PHYTYPE_G)
                b43_write16(dev, 0x03E6, 0x0);
}

static void b43_calc_loopback_gain(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        u16 backup_phy[16] = { 0 };
        u16 backup_radio[3];
        u16 backup_bband;
        u16 i, j, loop_i_max;
        u16 trsw_rx;
        u16 loop1_outer_done, loop1_inner_done;

        backup_phy[0] = b43_phy_read(dev, B43_PHY_CRS0);
        backup_phy[1] = b43_phy_read(dev, B43_PHY_CCKBBANDCFG);
        backup_phy[2] = b43_phy_read(dev, B43_PHY_RFOVER);
        backup_phy[3] = b43_phy_read(dev, B43_PHY_RFOVERVAL);
        if (phy->rev != 1) {    /* Not in specs, but needed to prevent PPC machine check */
                backup_phy[4] = b43_phy_read(dev, B43_PHY_ANALOGOVER);
                backup_phy[5] = b43_phy_read(dev, B43_PHY_ANALOGOVERVAL);
        }
        backup_phy[6] = b43_phy_read(dev, B43_PHY_CCK(0x5A));
        backup_phy[7] = b43_phy_read(dev, B43_PHY_CCK(0x59));
        backup_phy[8] = b43_phy_read(dev, B43_PHY_CCK(0x58));
        backup_phy[9] = b43_phy_read(dev, B43_PHY_CCK(0x0A));
        backup_phy[10] = b43_phy_read(dev, B43_PHY_CCK(0x03));
        backup_phy[11] = b43_phy_read(dev, B43_PHY_LO_MASK);
        backup_phy[12] = b43_phy_read(dev, B43_PHY_LO_CTL);
        backup_phy[13] = b43_phy_read(dev, B43_PHY_CCK(0x2B));
        backup_phy[14] = b43_phy_read(dev, B43_PHY_PGACTL);
        backup_phy[15] = b43_phy_read(dev, B43_PHY_LO_LEAKAGE);
        backup_bband = gphy->bbatt.att;
        backup_radio[0] = b43_radio_read16(dev, 0x52);
        backup_radio[1] = b43_radio_read16(dev, 0x43);
        backup_radio[2] = b43_radio_read16(dev, 0x7A);

        b43_phy_mask(dev, B43_PHY_CRS0, 0x3FFF);
        b43_phy_set(dev, B43_PHY_CCKBBANDCFG, 0x8000);
        b43_phy_set(dev, B43_PHY_RFOVER, 0x0002);
        b43_phy_mask(dev, B43_PHY_RFOVERVAL, 0xFFFD);
        b43_phy_set(dev, B43_PHY_RFOVER, 0x0001);
        b43_phy_mask(dev, B43_PHY_RFOVERVAL, 0xFFFE);
        if (phy->rev != 1) {    /* Not in specs, but needed to prevent PPC machine check */
                b43_phy_set(dev, B43_PHY_ANALOGOVER, 0x0001);
                b43_phy_mask(dev, B43_PHY_ANALOGOVERVAL, 0xFFFE);
                b43_phy_set(dev, B43_PHY_ANALOGOVER, 0x0002);
                b43_phy_mask(dev, B43_PHY_ANALOGOVERVAL, 0xFFFD);
        }
        b43_phy_set(dev, B43_PHY_RFOVER, 0x000C);
        b43_phy_set(dev, B43_PHY_RFOVERVAL, 0x000C);
        b43_phy_set(dev, B43_PHY_RFOVER, 0x0030);
        b43_phy_maskset(dev, B43_PHY_RFOVERVAL, 0xFFCF, 0x10);

        b43_phy_write(dev, B43_PHY_CCK(0x5A), 0x0780);
        b43_phy_write(dev, B43_PHY_CCK(0x59), 0xC810);
        b43_phy_write(dev, B43_PHY_CCK(0x58), 0x000D);

        b43_phy_set(dev, B43_PHY_CCK(0x0A), 0x2000);
        if (phy->rev != 1) {    /* Not in specs, but needed to prevent PPC machine check */
                b43_phy_set(dev, B43_PHY_ANALOGOVER, 0x0004);
                b43_phy_mask(dev, B43_PHY_ANALOGOVERVAL, 0xFFFB);
        }
        b43_phy_maskset(dev, B43_PHY_CCK(0x03), 0xFF9F, 0x40);

        if (phy->radio_rev == 8) {
                b43_radio_write16(dev, 0x43, 0x000F);
        } else {
                b43_radio_write16(dev, 0x52, 0);
                b43_radio_maskset(dev, 0x43, 0xFFF0, 0x9);
        }
        b43_gphy_set_baseband_attenuation(dev, 11);

        if (phy->rev >= 3)
                b43_phy_write(dev, B43_PHY_LO_MASK, 0xC020);
        else
                b43_phy_write(dev, B43_PHY_LO_MASK, 0x8020);
        b43_phy_write(dev, B43_PHY_LO_CTL, 0);

        b43_phy_maskset(dev, B43_PHY_CCK(0x2B), 0xFFC0, 0x01);
        b43_phy_maskset(dev, B43_PHY_CCK(0x2B), 0xC0FF, 0x800);

        b43_phy_set(dev, B43_PHY_RFOVER, 0x0100);
        b43_phy_mask(dev, B43_PHY_RFOVERVAL, 0xCFFF);

        if (dev->dev->bus_sprom->boardflags_lo & B43_BFL_EXTLNA) {
                if (phy->rev >= 7) {
                        b43_phy_set(dev, B43_PHY_RFOVER, 0x0800);
                        b43_phy_set(dev, B43_PHY_RFOVERVAL, 0x8000);
                }
        }
        b43_radio_mask(dev, 0x7A, 0x00F7);

        j = 0;
        loop_i_max = (phy->radio_rev == 8) ? 15 : 9;
        for (i = 0; i < loop_i_max; i++) {
                for (j = 0; j < 16; j++) {
                        b43_radio_write16(dev, 0x43, i);
                        b43_phy_maskset(dev, B43_PHY_RFOVERVAL, 0xF0FF, (j << 8));
                        b43_phy_maskset(dev, B43_PHY_PGACTL, 0x0FFF, 0xA000);
                        b43_phy_set(dev, B43_PHY_PGACTL, 0xF000);
                        udelay(20);
                        if (b43_phy_read(dev, B43_PHY_LO_LEAKAGE) >= 0xDFC)
                                goto exit_loop1;
                }
        }
      exit_loop1:
        loop1_outer_done = i;
        loop1_inner_done = j;
        if (j >= 8) {
                b43_phy_set(dev, B43_PHY_RFOVERVAL, 0x30);
                trsw_rx = 0x1B;
                for (j = j - 8; j < 16; j++) {
                        b43_phy_maskset(dev, B43_PHY_RFOVERVAL, 0xF0FF, (j << 8));
                        b43_phy_maskset(dev, B43_PHY_PGACTL, 0x0FFF, 0xA000);
                        b43_phy_set(dev, B43_PHY_PGACTL, 0xF000);
                        udelay(20);
                        trsw_rx -= 3;
                        if (b43_phy_read(dev, B43_PHY_LO_LEAKAGE) >= 0xDFC)
                                goto exit_loop2;
                }
        } else
                trsw_rx = 0x18;
      exit_loop2:

        if (phy->rev != 1) {    /* Not in specs, but needed to prevent PPC machine check */
                b43_phy_write(dev, B43_PHY_ANALOGOVER, backup_phy[4]);
                b43_phy_write(dev, B43_PHY_ANALOGOVERVAL, backup_phy[5]);
        }
        b43_phy_write(dev, B43_PHY_CCK(0x5A), backup_phy[6]);
        b43_phy_write(dev, B43_PHY_CCK(0x59), backup_phy[7]);
        b43_phy_write(dev, B43_PHY_CCK(0x58), backup_phy[8]);
        b43_phy_write(dev, B43_PHY_CCK(0x0A), backup_phy[9]);
        b43_phy_write(dev, B43_PHY_CCK(0x03), backup_phy[10]);
        b43_phy_write(dev, B43_PHY_LO_MASK, backup_phy[11]);
        b43_phy_write(dev, B43_PHY_LO_CTL, backup_phy[12]);
        b43_phy_write(dev, B43_PHY_CCK(0x2B), backup_phy[13]);
        b43_phy_write(dev, B43_PHY_PGACTL, backup_phy[14]);

        b43_gphy_set_baseband_attenuation(dev, backup_bband);

        b43_radio_write16(dev, 0x52, backup_radio[0]);
        b43_radio_write16(dev, 0x43, backup_radio[1]);
        b43_radio_write16(dev, 0x7A, backup_radio[2]);

        b43_phy_write(dev, B43_PHY_RFOVER, backup_phy[2] | 0x0003);
        udelay(10);
        b43_phy_write(dev, B43_PHY_RFOVER, backup_phy[2]);
        b43_phy_write(dev, B43_PHY_RFOVERVAL, backup_phy[3]);
        b43_phy_write(dev, B43_PHY_CRS0, backup_phy[0]);
        b43_phy_write(dev, B43_PHY_CCKBBANDCFG, backup_phy[1]);

        gphy->max_lb_gain =
            ((loop1_inner_done * 6) - (loop1_outer_done * 4)) - 11;
        gphy->trsw_rx_gain = trsw_rx * 2;
}

static void b43_hardware_pctl_early_init(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;

        if (!b43_has_hardware_pctl(dev)) {
                b43_phy_write(dev, 0x047A, 0xC111);
                return;
        }

        b43_phy_mask(dev, 0x0036, 0xFEFF);
        b43_phy_write(dev, 0x002F, 0x0202);
        b43_phy_set(dev, 0x047C, 0x0002);
        b43_phy_set(dev, 0x047A, 0xF000);
        if (phy->radio_ver == 0x2050 && phy->radio_rev == 8) {
                b43_phy_maskset(dev, 0x047A, 0xFF0F, 0x0010);
                b43_phy_set(dev, 0x005D, 0x8000);
                b43_phy_maskset(dev, 0x004E, 0xFFC0, 0x0010);
                b43_phy_write(dev, 0x002E, 0xC07F);
                b43_phy_set(dev, 0x0036, 0x0400);
        } else {
                b43_phy_set(dev, 0x0036, 0x0200);
                b43_phy_set(dev, 0x0036, 0x0400);
                b43_phy_mask(dev, 0x005D, 0x7FFF);
                b43_phy_mask(dev, 0x004F, 0xFFFE);
                b43_phy_maskset(dev, 0x004E, 0xFFC0, 0x0010);
                b43_phy_write(dev, 0x002E, 0xC07F);
                b43_phy_maskset(dev, 0x047A, 0xFF0F, 0x0010);
        }
}

/* Hardware power control for G-PHY */
static void b43_hardware_pctl_init_gphy(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;

        if (!b43_has_hardware_pctl(dev)) {
                /* No hardware power control */
                b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_HWPCTL);
                return;
        }

        b43_phy_maskset(dev, 0x0036, 0xFFC0, (gphy->tgt_idle_tssi - gphy->cur_idle_tssi));
        b43_phy_maskset(dev, 0x0478, 0xFF00, (gphy->tgt_idle_tssi - gphy->cur_idle_tssi));
        b43_gphy_tssi_power_lt_init(dev);
        b43_gphy_gain_lt_init(dev);
        b43_phy_mask(dev, 0x0060, 0xFFBF);
        b43_phy_write(dev, 0x0014, 0x0000);

        B43_WARN_ON(phy->rev < 6);
        b43_phy_set(dev, 0x0478, 0x0800);
        b43_phy_mask(dev, 0x0478, 0xFEFF);
        b43_phy_mask(dev, 0x0801, 0xFFBF);

        b43_gphy_dc_lt_init(dev, 1);

        /* Enable hardware pctl in firmware. */
        b43_hf_write(dev, b43_hf_read(dev) | B43_HF_HWPCTL);
}

/* Initialize B/G PHY power control */
static void b43_phy_init_pctl(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        struct b43_rfatt old_rfatt;
        struct b43_bbatt old_bbatt;
        u8 old_tx_control = 0;

        B43_WARN_ON(phy->type != B43_PHYTYPE_G);

        if ((dev->dev->board_vendor == SSB_BOARDVENDOR_BCM) &&
            (dev->dev->board_type == SSB_BOARD_BU4306))
                return;

        b43_phy_write(dev, 0x0028, 0x8018);

        /* This does something with the Analog... */
        b43_write16(dev, B43_MMIO_PHY0, b43_read16(dev, B43_MMIO_PHY0)
                    & 0xFFDF);

        if (!phy->gmode)
                return;
        b43_hardware_pctl_early_init(dev);
        if (gphy->cur_idle_tssi == 0) {
                if (phy->radio_ver == 0x2050 && phy->analog == 0) {
                        b43_radio_maskset(dev, 0x0076, 0x00F7, 0x0084);
                } else {
                        struct b43_rfatt rfatt;
                        struct b43_bbatt bbatt;

                        memcpy(&old_rfatt, &gphy->rfatt, sizeof(old_rfatt));
                        memcpy(&old_bbatt, &gphy->bbatt, sizeof(old_bbatt));
                        old_tx_control = gphy->tx_control;

                        bbatt.att = 11;
                        if (phy->radio_rev == 8) {
                                rfatt.att = 15;
                                rfatt.with_padmix = true;
                        } else {
                                rfatt.att = 9;
                                rfatt.with_padmix = false;
                        }
                        b43_set_txpower_g(dev, &bbatt, &rfatt, 0);
                }
                b43_dummy_transmission(dev, false, true);
                gphy->cur_idle_tssi = b43_phy_read(dev, B43_PHY_ITSSI);
                if (B43_DEBUG) {
                        /* Current-Idle-TSSI sanity check. */
                        if (abs(gphy->cur_idle_tssi - gphy->tgt_idle_tssi) >= 20) {
                                b43dbg(dev->wl,
                                       "!WARNING! Idle-TSSI phy->cur_idle_tssi "
                                       "measuring failed. (cur=%d, tgt=%d). Disabling TX power "
                                       "adjustment.\n", gphy->cur_idle_tssi,
                                       gphy->tgt_idle_tssi);
                                gphy->cur_idle_tssi = 0;
                        }
                }
                if (phy->radio_ver == 0x2050 && phy->analog == 0) {
                        b43_radio_mask(dev, 0x0076, 0xFF7B);
                } else {
                        b43_set_txpower_g(dev, &old_bbatt,
                                          &old_rfatt, old_tx_control);
                }
        }
        b43_hardware_pctl_init_gphy(dev);
        b43_shm_clear_tssi(dev);
}

static void b43_phy_inita(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;

        might_sleep();

        if (phy->rev >= 6) {
                if (b43_phy_read(dev, B43_PHY_ENCORE) & B43_PHY_ENCORE_EN)
                        b43_phy_set(dev, B43_PHY_ENCORE, 0x0010);
                else
                        b43_phy_mask(dev, B43_PHY_ENCORE, ~0x1010);
        }

        b43_wa_all(dev);

        if (dev->dev->bus_sprom->boardflags_lo & B43_BFL_PACTRL)
                b43_phy_maskset(dev, B43_PHY_OFDM(0x6E), 0xE000, 0x3CF);
}

static void b43_phy_initg(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        u16 tmp;

        if (phy->rev == 1)
                b43_phy_initb5(dev);
        else
                b43_phy_initb6(dev);

        if (phy->rev >= 2 || phy->gmode)
                b43_phy_inita(dev);

        if (phy->rev >= 2) {
                b43_phy_write(dev, B43_PHY_ANALOGOVER, 0);
                b43_phy_write(dev, B43_PHY_ANALOGOVERVAL, 0);
        }
        if (phy->rev == 2) {
                b43_phy_write(dev, B43_PHY_RFOVER, 0);
                b43_phy_write(dev, B43_PHY_PGACTL, 0xC0);
        }
        if (phy->rev > 5) {
                b43_phy_write(dev, B43_PHY_RFOVER, 0x400);
                b43_phy_write(dev, B43_PHY_PGACTL, 0xC0);
        }
        if (phy->gmode || phy->rev >= 2) {
                tmp = b43_phy_read(dev, B43_PHY_VERSION_OFDM);
                tmp &= B43_PHYVER_VERSION;
                if (tmp == 3 || tmp == 5) {
                        b43_phy_write(dev, B43_PHY_OFDM(0xC2), 0x1816);
                        b43_phy_write(dev, B43_PHY_OFDM(0xC3), 0x8006);
                }
                if (tmp == 5) {
                        b43_phy_maskset(dev, B43_PHY_OFDM(0xCC), 0x00FF, 0x1F00);
                }
        }
        if ((phy->rev <= 2 && phy->gmode) || phy->rev >= 2)
                b43_phy_write(dev, B43_PHY_OFDM(0x7E), 0x78);
        if (phy->radio_rev == 8) {
                b43_phy_set(dev, B43_PHY_EXTG(0x01), 0x80);
                b43_phy_set(dev, B43_PHY_OFDM(0x3E), 0x4);
        }
        if (has_loopback_gain(phy))
                b43_calc_loopback_gain(dev);

        if (phy->radio_rev != 8) {
                if (gphy->initval == 0xFFFF)
                        gphy->initval = b43_radio_init2050(dev);
                else
                        b43_radio_write16(dev, 0x0078, gphy->initval);
        }
        b43_lo_g_init(dev);
        if (has_tx_magnification(phy)) {
                b43_radio_write16(dev, 0x52,
                                  (b43_radio_read16(dev, 0x52) & 0xFF00)
                                  | gphy->lo_control->tx_bias | gphy->
                                  lo_control->tx_magn);
        } else {
                b43_radio_maskset(dev, 0x52, 0xFFF0, gphy->lo_control->tx_bias);
        }
        if (phy->rev >= 6) {
                b43_phy_maskset(dev, B43_PHY_CCK(0x36), 0x0FFF, (gphy->lo_control->tx_bias << 12));
        }
        if (dev->dev->bus_sprom->boardflags_lo & B43_BFL_PACTRL)
                b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x8075);
        else
                b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x807F);
        if (phy->rev < 2)
                b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x101);
        else
                b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x202);
        if (phy->gmode || phy->rev >= 2) {
                b43_lo_g_adjust(dev);
                b43_phy_write(dev, B43_PHY_LO_MASK, 0x8078);
        }

        if (!(dev->dev->bus_sprom->boardflags_lo & B43_BFL_RSSI)) {
                /* The specs state to update the NRSSI LT with
                 * the value 0x7FFFFFFF here. I think that is some weird
                 * compiler optimization in the original driver.
                 * Essentially, what we do here is resetting all NRSSI LT
                 * entries to -32 (see the clamp_val() in nrssi_hw_update())
                 */
                b43_nrssi_hw_update(dev, 0xFFFF);       //FIXME?
                b43_calc_nrssi_threshold(dev);
        } else if (phy->gmode || phy->rev >= 2) {
                if (gphy->nrssi[0] == -1000) {
                        B43_WARN_ON(gphy->nrssi[1] != -1000);
                        b43_calc_nrssi_slope(dev);
                } else
                        b43_calc_nrssi_threshold(dev);
        }
        if (phy->radio_rev == 8)
                b43_phy_write(dev, B43_PHY_EXTG(0x05), 0x3230);
        b43_phy_init_pctl(dev);
        /* FIXME: The spec says in the following if, the 0 should be replaced
           'if OFDM may not be used in the current locale'
           but OFDM is legal everywhere */
        if ((dev->dev->chip_id == 0x4306
             && dev->dev->chip_pkg == 2) || 0) {
                b43_phy_mask(dev, B43_PHY_CRS0, 0xBFFF);
                b43_phy_mask(dev, B43_PHY_OFDM(0xC3), 0x7FFF);
        }
}

void b43_gphy_channel_switch(struct b43_wldev *dev,
                             unsigned int channel,
                             bool synthetic_pu_workaround)
{
        if (synthetic_pu_workaround)
                b43_synth_pu_workaround(dev, channel);

        b43_write16(dev, B43_MMIO_CHANNEL, channel2freq_bg(channel));

        if (channel == 14) {
                if (dev->dev->bus_sprom->country_code ==
                    SSB_SPROM1CCODE_JAPAN)
                        b43_hf_write(dev,
                                     b43_hf_read(dev) & ~B43_HF_ACPR);
                else
                        b43_hf_write(dev,
                                     b43_hf_read(dev) | B43_HF_ACPR);
                b43_write16(dev, B43_MMIO_CHANNEL_EXT,
                            b43_read16(dev, B43_MMIO_CHANNEL_EXT)
                            | (1 << 11));
        } else {
                b43_write16(dev, B43_MMIO_CHANNEL_EXT,
                            b43_read16(dev, B43_MMIO_CHANNEL_EXT)
                            & 0xF7BF);
        }
}

static void default_baseband_attenuation(struct b43_wldev *dev,
                                         struct b43_bbatt *bb)
{
        struct b43_phy *phy = &dev->phy;

        if (phy->radio_ver == 0x2050 && phy->radio_rev < 6)
                bb->att = 0;
        else
                bb->att = 2;
}

static void default_radio_attenuation(struct b43_wldev *dev,
                                      struct b43_rfatt *rf)
{
        struct b43_bus_dev *bdev = dev->dev;
        struct b43_phy *phy = &dev->phy;

        rf->with_padmix = false;

        if (dev->dev->board_vendor == SSB_BOARDVENDOR_BCM &&
            dev->dev->board_type == SSB_BOARD_BCM4309G) {
                if (dev->dev->board_rev < 0x43) {
                        rf->att = 2;
                        return;
                } else if (dev->dev->board_rev < 0x51) {
                        rf->att = 3;
                        return;
                }
        }

        switch (phy->radio_ver) {
        case 0x2053:
                switch (phy->radio_rev) {
                case 1:
                        rf->att = 6;
                        return;
                }
                break;
        case 0x2050:
                switch (phy->radio_rev) {
                case 0:
                        rf->att = 5;
                        return;
                case 1:
                        if (phy->type == B43_PHYTYPE_G) {
                                if (bdev->board_vendor == SSB_BOARDVENDOR_BCM
                                    && bdev->board_type == SSB_BOARD_BCM4309G
                                    && bdev->board_rev >= 30)
                                        rf->att = 3;
                                else if (bdev->board_vendor ==
                                         SSB_BOARDVENDOR_BCM
                                         && bdev->board_type ==
                                         SSB_BOARD_BU4306)
                                        rf->att = 3;
                                else
                                        rf->att = 1;
                        } else {
                                if (bdev->board_vendor == SSB_BOARDVENDOR_BCM
                                    && bdev->board_type == SSB_BOARD_BCM4309G
                                    && bdev->board_rev >= 30)
                                        rf->att = 7;
                                else
                                        rf->att = 6;
                        }
                        return;
                case 2:
                        if (phy->type == B43_PHYTYPE_G) {
                                if (bdev->board_vendor == SSB_BOARDVENDOR_BCM
                                    && bdev->board_type == SSB_BOARD_BCM4309G
                                    && bdev->board_rev >= 30)
                                        rf->att = 3;
                                else if (bdev->board_vendor ==
                                         SSB_BOARDVENDOR_BCM
                                         && bdev->board_type ==
                                         SSB_BOARD_BU4306)
                                        rf->att = 5;
                                else if (bdev->chip_id == 0x4320)
                                        rf->att = 4;
                                else
                                        rf->att = 3;
                        } else
                                rf->att = 6;
                        return;
                case 3:
                        rf->att = 5;
                        return;
                case 4:
                case 5:
                        rf->att = 1;
                        return;
                case 6:
                case 7:
                        rf->att = 5;
                        return;
                case 8:
                        rf->att = 0xA;
                        rf->with_padmix = true;
                        return;
                case 9:
                default:
                        rf->att = 5;
                        return;
                }
        }
        rf->att = 5;
}

static u16 default_tx_control(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;

        if (phy->radio_ver != 0x2050)
                return 0;
        if (phy->radio_rev == 1)
                return B43_TXCTL_PA2DB | B43_TXCTL_TXMIX;
        if (phy->radio_rev < 6)
                return B43_TXCTL_PA2DB;
        if (phy->radio_rev == 8)
                return B43_TXCTL_TXMIX;
        return 0;
}

static u8 b43_gphy_aci_detect(struct b43_wldev *dev, u8 channel)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        u8 ret = 0;
        u16 saved, rssi, temp;
        int i, j = 0;

        saved = b43_phy_read(dev, 0x0403);
        b43_switch_channel(dev, channel);
        b43_phy_write(dev, 0x0403, (saved & 0xFFF8) | 5);
        if (gphy->aci_hw_rssi)
                rssi = b43_phy_read(dev, 0x048A) & 0x3F;
        else
                rssi = saved & 0x3F;
        /* clamp temp to signed 5bit */
        if (rssi > 32)
                rssi -= 64;
        for (i = 0; i < 100; i++) {
                temp = (b43_phy_read(dev, 0x047F) >> 8) & 0x3F;
                if (temp > 32)
                        temp -= 64;
                if (temp < rssi)
                        j++;
                if (j >= 20)
                        ret = 1;
        }
        b43_phy_write(dev, 0x0403, saved);

        return ret;
}

static u8 b43_gphy_aci_scan(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        u8 ret[13] = { 0 };
        unsigned int channel = phy->channel;
        unsigned int i, j, start, end;

        if (!((phy->type == B43_PHYTYPE_G) && (phy->rev > 0)))
                return 0;

        b43_phy_lock(dev);
        b43_radio_lock(dev);
        b43_phy_mask(dev, 0x0802, 0xFFFC);
        b43_phy_mask(dev, B43_PHY_G_CRS, 0x7FFF);
        b43_set_all_gains(dev, 3, 8, 1);

        start = (channel > 5) ? channel - 5 : 1;
        end = (channel + 5 < 14) ? channel + 5 : 13;

        for (i = start; i <= end; i++) {
                if (abs(channel - i) > 2)
                        ret[i - 1] = b43_gphy_aci_detect(dev, i);
        }
        b43_switch_channel(dev, channel);
        b43_phy_maskset(dev, 0x0802, 0xFFFC, 0x0003);
        b43_phy_mask(dev, 0x0403, 0xFFF8);
        b43_phy_set(dev, B43_PHY_G_CRS, 0x8000);
        b43_set_original_gains(dev);
        for (i = 0; i < 13; i++) {
                if (!ret[i])
                        continue;
                end = (i + 5 < 13) ? i + 5 : 13;
                for (j = i; j < end; j++)
                        ret[j] = 1;
        }
        b43_radio_unlock(dev);
        b43_phy_unlock(dev);

        return ret[channel - 1];
}

static s32 b43_tssi2dbm_ad(s32 num, s32 den)
{
        if (num < 0)
                return num / den;
        else
                return (num + den / 2) / den;
}

static s8 b43_tssi2dbm_entry(s8 entry[], u8 index,
                             s16 pab0, s16 pab1, s16 pab2)
{
        s32 m1, m2, f = 256, q, delta;
        s8 i = 0;

        m1 = b43_tssi2dbm_ad(16 * pab0 + index * pab1, 32);
        m2 = max(b43_tssi2dbm_ad(32768 + index * pab2, 256), 1);
        do {
                if (i > 15)
                        return -EINVAL;
                q = b43_tssi2dbm_ad(f * 4096 -
                                    b43_tssi2dbm_ad(m2 * f, 16) * f, 2048);
                delta = abs(q - f);
                f = q;
                i++;
        } while (delta >= 2);
        entry[index] = clamp_val(b43_tssi2dbm_ad(m1 * f, 8192), -127, 128);
        return 0;
}

u8 *b43_generate_dyn_tssi2dbm_tab(struct b43_wldev *dev,
                                  s16 pab0, s16 pab1, s16 pab2)
{
        unsigned int i;
        u8 *tab;
        int err;

        tab = kmalloc(64, GFP_KERNEL);
        if (!tab) {
                b43err(dev->wl, "Could not allocate memory "
                       "for tssi2dbm table\n");
                return NULL;
        }
        for (i = 0; i < 64; i++) {
                err = b43_tssi2dbm_entry(tab, i, pab0, pab1, pab2);
                if (err) {
                        b43err(dev->wl, "Could not generate "
                               "tssi2dBm table\n");
                        kfree(tab);
                        return NULL;
                }
        }

        return tab;
}

/* Initialise the TSSI->dBm lookup table */
static int b43_gphy_init_tssi2dbm_table(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        s16 pab0, pab1, pab2;

        pab0 = (s16) (dev->dev->bus_sprom->pa0b0);
        pab1 = (s16) (dev->dev->bus_sprom->pa0b1);
        pab2 = (s16) (dev->dev->bus_sprom->pa0b2);

        B43_WARN_ON((dev->dev->chip_id == 0x4301) &&
                    (phy->radio_ver != 0x2050)); /* Not supported anymore */

        gphy->dyn_tssi_tbl = false;

        if (pab0 != 0 && pab1 != 0 && pab2 != 0 &&
            pab0 != -1 && pab1 != -1 && pab2 != -1) {
                /* The pabX values are set in SPROM. Use them. */
                if ((s8) dev->dev->bus_sprom->itssi_bg != 0 &&
                    (s8) dev->dev->bus_sprom->itssi_bg != -1) {
                        gphy->tgt_idle_tssi =
                                (s8) (dev->dev->bus_sprom->itssi_bg);
                } else
                        gphy->tgt_idle_tssi = 62;
                gphy->tssi2dbm = b43_generate_dyn_tssi2dbm_tab(dev, pab0,
                                                               pab1, pab2);
                if (!gphy->tssi2dbm)
                        return -ENOMEM;
                gphy->dyn_tssi_tbl = true;
        } else {
                /* pabX values not set in SPROM. */
                gphy->tgt_idle_tssi = 52;
                gphy->tssi2dbm = b43_tssi2dbm_g_table;
        }

        return 0;
}

static int b43_gphy_op_allocate(struct b43_wldev *dev)
{
        struct b43_phy_g *gphy;
        struct b43_txpower_lo_control *lo;
        int err;

        gphy = kzalloc_obj(*gphy);
        if (!gphy) {
                err = -ENOMEM;
                goto error;
        }
        dev->phy.g = gphy;

        lo = kzalloc_obj(*lo);
        if (!lo) {
                err = -ENOMEM;
                goto err_free_gphy;
        }
        gphy->lo_control = lo;

        err = b43_gphy_init_tssi2dbm_table(dev);
        if (err)
                goto err_free_lo;

        return 0;

err_free_lo:
        kfree(lo);
err_free_gphy:
        kfree(gphy);
error:
        return err;
}

static void b43_gphy_op_prepare_structs(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        const void *tssi2dbm;
        int tgt_idle_tssi;
        struct b43_txpower_lo_control *lo;
        unsigned int i;

        /* tssi2dbm table is constant, so it is initialized at alloc time.
         * Save a copy of the pointer. */
        tssi2dbm = gphy->tssi2dbm;
        tgt_idle_tssi = gphy->tgt_idle_tssi;
        /* Save the LO pointer. */
        lo = gphy->lo_control;

        /* Zero out the whole PHY structure. */
        memset(gphy, 0, sizeof(*gphy));

        /* Restore pointers. */
        gphy->tssi2dbm = tssi2dbm;
        gphy->tgt_idle_tssi = tgt_idle_tssi;
        gphy->lo_control = lo;

        memset(gphy->minlowsig, 0xFF, sizeof(gphy->minlowsig));

        /* NRSSI */
        for (i = 0; i < ARRAY_SIZE(gphy->nrssi); i++)
                gphy->nrssi[i] = -1000;
        for (i = 0; i < ARRAY_SIZE(gphy->nrssi_lt); i++)
                gphy->nrssi_lt[i] = i;

        gphy->lofcal = 0xFFFF;
        gphy->initval = 0xFFFF;

        gphy->interfmode = B43_INTERFMODE_NONE;

        /* OFDM-table address caching. */
        gphy->ofdmtab_addr_direction = B43_OFDMTAB_DIRECTION_UNKNOWN;

        gphy->average_tssi = 0xFF;

        /* Local Osciallator structure */
        lo->tx_bias = 0xFF;
        INIT_LIST_HEAD(&lo->calib_list);
}

static void b43_gphy_op_free(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;

        kfree(gphy->lo_control);

        if (gphy->dyn_tssi_tbl)
                kfree(gphy->tssi2dbm);
        gphy->dyn_tssi_tbl = false;
        gphy->tssi2dbm = NULL;

        kfree(gphy);
        dev->phy.g = NULL;
}

static int b43_gphy_op_prepare_hardware(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        struct b43_txpower_lo_control *lo = gphy->lo_control;

        B43_WARN_ON(phy->type != B43_PHYTYPE_G);

        default_baseband_attenuation(dev, &gphy->bbatt);
        default_radio_attenuation(dev, &gphy->rfatt);
        gphy->tx_control = (default_tx_control(dev) << 4);
        generate_rfatt_list(dev, &lo->rfatt_list);
        generate_bbatt_list(dev, &lo->bbatt_list);

        /* Commit previous writes */
        b43_read32(dev, B43_MMIO_MACCTL);

        if (phy->rev == 1) {
                /* Workaround: Temporarly disable gmode through the early init
                 * phase, as the gmode stuff is not needed for phy rev 1 */
                phy->gmode = false;
                b43_wireless_core_reset(dev, 0);
                b43_phy_initg(dev);
                phy->gmode = true;
                b43_wireless_core_reset(dev, 1);
        }

        return 0;
}

static int b43_gphy_op_init(struct b43_wldev *dev)
{
        b43_phy_initg(dev);

        return 0;
}

static void b43_gphy_op_exit(struct b43_wldev *dev)
{
        b43_lo_g_cleanup(dev);
}

static u16 b43_gphy_op_read(struct b43_wldev *dev, u16 reg)
{
        b43_write16f(dev, B43_MMIO_PHY_CONTROL, reg);
        return b43_read16(dev, B43_MMIO_PHY_DATA);
}

static void b43_gphy_op_write(struct b43_wldev *dev, u16 reg, u16 value)
{
        b43_write16f(dev, B43_MMIO_PHY_CONTROL, reg);
        b43_write16(dev, B43_MMIO_PHY_DATA, value);
}

static u16 b43_gphy_op_radio_read(struct b43_wldev *dev, u16 reg)
{
        /* Register 1 is a 32-bit register. */
        B43_WARN_ON(reg == 1);
        /* G-PHY needs 0x80 for read access. */
        reg |= 0x80;

        b43_write16f(dev, B43_MMIO_RADIO_CONTROL, reg);
        return b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
}

static void b43_gphy_op_radio_write(struct b43_wldev *dev, u16 reg, u16 value)
{
        /* Register 1 is a 32-bit register. */
        B43_WARN_ON(reg == 1);

        b43_write16f(dev, B43_MMIO_RADIO_CONTROL, reg);
        b43_write16(dev, B43_MMIO_RADIO_DATA_LOW, value);
}

static bool b43_gphy_op_supports_hwpctl(struct b43_wldev *dev)
{
        return (dev->phy.rev >= 6);
}

static void b43_gphy_op_software_rfkill(struct b43_wldev *dev,
                                        bool blocked)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        unsigned int channel;

        might_sleep();

        if (!blocked) {
                /* Turn radio ON */
                if (phy->radio_on)
                        return;

                b43_phy_write(dev, 0x0015, 0x8000);
                b43_phy_write(dev, 0x0015, 0xCC00);
                b43_phy_write(dev, 0x0015, (phy->gmode ? 0x00C0 : 0x0000));
                if (gphy->radio_off_context.valid) {
                        /* Restore the RFover values. */
                        b43_phy_write(dev, B43_PHY_RFOVER,
                                      gphy->radio_off_context.rfover);
                        b43_phy_write(dev, B43_PHY_RFOVERVAL,
                                      gphy->radio_off_context.rfoverval);
                        gphy->radio_off_context.valid = false;
                }
                channel = phy->channel;
                b43_gphy_channel_switch(dev, 6, 1);
                b43_gphy_channel_switch(dev, channel, 0);
        } else {
                /* Turn radio OFF */
                u16 rfover, rfoverval;

                rfover = b43_phy_read(dev, B43_PHY_RFOVER);
                rfoverval = b43_phy_read(dev, B43_PHY_RFOVERVAL);
                gphy->radio_off_context.rfover = rfover;
                gphy->radio_off_context.rfoverval = rfoverval;
                gphy->radio_off_context.valid = true;
                b43_phy_write(dev, B43_PHY_RFOVER, rfover | 0x008C);
                b43_phy_write(dev, B43_PHY_RFOVERVAL, rfoverval & 0xFF73);
        }
}

static int b43_gphy_op_switch_channel(struct b43_wldev *dev,
                                      unsigned int new_channel)
{
        if ((new_channel < 1) || (new_channel > 14))
                return -EINVAL;
        b43_gphy_channel_switch(dev, new_channel, 0);

        return 0;
}

static unsigned int b43_gphy_op_get_default_chan(struct b43_wldev *dev)
{
        return 1; /* Default to channel 1 */
}

static void b43_gphy_op_set_rx_antenna(struct b43_wldev *dev, int antenna)
{
        struct b43_phy *phy = &dev->phy;
        u16 tmp;
        int autodiv = 0;

        if (antenna == B43_ANTENNA_AUTO0 || antenna == B43_ANTENNA_AUTO1)
                autodiv = 1;

        b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_ANTDIVHELP);

        b43_phy_maskset(dev, B43_PHY_BBANDCFG, ~B43_PHY_BBANDCFG_RXANT,
                        (autodiv ? B43_ANTENNA_AUTO1 : antenna) <<
                        B43_PHY_BBANDCFG_RXANT_SHIFT);

        if (autodiv) {
                tmp = b43_phy_read(dev, B43_PHY_ANTDWELL);
                if (antenna == B43_ANTENNA_AUTO1)
                        tmp &= ~B43_PHY_ANTDWELL_AUTODIV1;
                else
                        tmp |= B43_PHY_ANTDWELL_AUTODIV1;
                b43_phy_write(dev, B43_PHY_ANTDWELL, tmp);
        }

        tmp = b43_phy_read(dev, B43_PHY_ANTWRSETT);
        if (autodiv)
                tmp |= B43_PHY_ANTWRSETT_ARXDIV;
        else
                tmp &= ~B43_PHY_ANTWRSETT_ARXDIV;
        b43_phy_write(dev, B43_PHY_ANTWRSETT, tmp);

        if (autodiv)
                b43_phy_set(dev, B43_PHY_ANTWRSETT, B43_PHY_ANTWRSETT_ARXDIV);
        else {
                b43_phy_mask(dev, B43_PHY_ANTWRSETT,
                             B43_PHY_ANTWRSETT_ARXDIV);
        }

        if (phy->rev >= 2) {
                b43_phy_set(dev, B43_PHY_OFDM61, B43_PHY_OFDM61_10);
                b43_phy_maskset(dev, B43_PHY_DIVSRCHGAINBACK, 0xFF00, 0x15);

                if (phy->rev == 2)
                        b43_phy_write(dev, B43_PHY_ADIVRELATED, 8);
                else
                        b43_phy_maskset(dev, B43_PHY_ADIVRELATED, 0xFF00, 8);
        }
        if (phy->rev >= 6)
                b43_phy_write(dev, B43_PHY_OFDM9B, 0xDC);

        b43_hf_write(dev, b43_hf_read(dev) | B43_HF_ANTDIVHELP);
}

static int b43_gphy_op_interf_mitigation(struct b43_wldev *dev,
                                         enum b43_interference_mitigation mode)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        int currentmode;

        B43_WARN_ON(phy->type != B43_PHYTYPE_G);
        if ((phy->rev == 0) || (!phy->gmode))
                return -ENODEV;

        gphy->aci_wlan_automatic = false;
        switch (mode) {
        case B43_INTERFMODE_AUTOWLAN:
                gphy->aci_wlan_automatic = true;
                if (gphy->aci_enable)
                        mode = B43_INTERFMODE_MANUALWLAN;
                else
                        mode = B43_INTERFMODE_NONE;
                break;
        case B43_INTERFMODE_NONE:
        case B43_INTERFMODE_NONWLAN:
        case B43_INTERFMODE_MANUALWLAN:
                break;
        default:
                return -EINVAL;
        }

        currentmode = gphy->interfmode;
        if (currentmode == mode)
                return 0;
        if (currentmode != B43_INTERFMODE_NONE)
                b43_radio_interference_mitigation_disable(dev, currentmode);

        if (mode == B43_INTERFMODE_NONE) {
                gphy->aci_enable = false;
                gphy->aci_hw_rssi = false;
        } else
                b43_radio_interference_mitigation_enable(dev, mode);
        gphy->interfmode = mode;

        return 0;
}

/* https://bcm-specs.sipsolutions.net/EstimatePowerOut
 * This function converts a TSSI value to dBm in Q5.2
 */
static s8 b43_gphy_estimate_power_out(struct b43_wldev *dev, s8 tssi)
{
        struct b43_phy_g *gphy = dev->phy.g;
        s8 dbm;
        s32 tmp;

        tmp = (gphy->tgt_idle_tssi - gphy->cur_idle_tssi + tssi);
        tmp = clamp_val(tmp, 0x00, 0x3F);
        dbm = gphy->tssi2dbm[tmp];

        return dbm;
}

static void b43_put_attenuation_into_ranges(struct b43_wldev *dev,
                                            int *_bbatt, int *_rfatt)
{
        int rfatt = *_rfatt;
        int bbatt = *_bbatt;
        struct b43_txpower_lo_control *lo = dev->phy.g->lo_control;

        /* Get baseband and radio attenuation values into their permitted ranges.
         * Radio attenuation affects power level 4 times as much as baseband. */

        /* Range constants */
        const int rf_min = lo->rfatt_list.min_val;
        const int rf_max = lo->rfatt_list.max_val;
        const int bb_min = lo->bbatt_list.min_val;
        const int bb_max = lo->bbatt_list.max_val;

        while (1) {
                if (rfatt > rf_max && bbatt > bb_max - 4)
                        break;  /* Can not get it into ranges */
                if (rfatt < rf_min && bbatt < bb_min + 4)
                        break;  /* Can not get it into ranges */
                if (bbatt > bb_max && rfatt > rf_max - 1)
                        break;  /* Can not get it into ranges */
                if (bbatt < bb_min && rfatt < rf_min + 1)
                        break;  /* Can not get it into ranges */

                if (bbatt > bb_max) {
                        bbatt -= 4;
                        rfatt += 1;
                        continue;
                }
                if (bbatt < bb_min) {
                        bbatt += 4;
                        rfatt -= 1;
                        continue;
                }
                if (rfatt > rf_max) {
                        rfatt -= 1;
                        bbatt += 4;
                        continue;
                }
                if (rfatt < rf_min) {
                        rfatt += 1;
                        bbatt -= 4;
                        continue;
                }
                break;
        }

        *_rfatt = clamp_val(rfatt, rf_min, rf_max);
        *_bbatt = clamp_val(bbatt, bb_min, bb_max);
}

static void b43_gphy_op_adjust_txpower(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        int rfatt, bbatt;
        u8 tx_control;

        b43_mac_suspend(dev);

        /* Calculate the new attenuation values. */
        bbatt = gphy->bbatt.att;
        bbatt += gphy->bbatt_delta;
        rfatt = gphy->rfatt.att;
        rfatt += gphy->rfatt_delta;

        b43_put_attenuation_into_ranges(dev, &bbatt, &rfatt);
        tx_control = gphy->tx_control;
        if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 2)) {
                if (rfatt <= 1) {
                        if (tx_control == 0) {
                                tx_control =
                                    B43_TXCTL_PA2DB |
                                    B43_TXCTL_TXMIX;
                                rfatt += 2;
                                bbatt += 2;
                        } else if (dev->dev->bus_sprom->
                                   boardflags_lo &
                                   B43_BFL_PACTRL) {
                                bbatt += 4 * (rfatt - 2);
                                rfatt = 2;
                        }
                } else if (rfatt > 4 && tx_control) {
                        tx_control = 0;
                        if (bbatt < 3) {
                                rfatt -= 3;
                                bbatt += 2;
                        } else {
                                rfatt -= 2;
                                bbatt -= 2;
                        }
                }
        }
        /* Save the control values */
        gphy->tx_control = tx_control;
        b43_put_attenuation_into_ranges(dev, &bbatt, &rfatt);
        gphy->rfatt.att = rfatt;
        gphy->bbatt.att = bbatt;

        if (b43_debug(dev, B43_DBG_XMITPOWER))
                b43dbg(dev->wl, "Adjusting TX power\n");

        /* Adjust the hardware */
        b43_phy_lock(dev);
        b43_radio_lock(dev);
        b43_set_txpower_g(dev, &gphy->bbatt, &gphy->rfatt,
                          gphy->tx_control);
        b43_radio_unlock(dev);
        b43_phy_unlock(dev);

        b43_mac_enable(dev);
}

static enum b43_txpwr_result b43_gphy_op_recalc_txpower(struct b43_wldev *dev,
                                                        bool ignore_tssi)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;
        unsigned int average_tssi;
        int cck_result, ofdm_result;
        int estimated_pwr, desired_pwr, pwr_adjust;
        int rfatt_delta, bbatt_delta;
        unsigned int max_pwr;

        /* First get the average TSSI */
        cck_result = b43_phy_shm_tssi_read(dev, B43_SHM_SH_TSSI_CCK);
        ofdm_result = b43_phy_shm_tssi_read(dev, B43_SHM_SH_TSSI_OFDM_G);
        if ((cck_result < 0) && (ofdm_result < 0)) {
                /* No TSSI information available */
                if (!ignore_tssi)
                        goto no_adjustment_needed;
                cck_result = 0;
                ofdm_result = 0;
        }
        if (cck_result < 0)
                average_tssi = ofdm_result;
        else if (ofdm_result < 0)
                average_tssi = cck_result;
        else
                average_tssi = (cck_result + ofdm_result) / 2;
        /* Merge the average with the stored value. */
        if (likely(gphy->average_tssi != 0xFF))
                average_tssi = (average_tssi + gphy->average_tssi) / 2;
        gphy->average_tssi = average_tssi;
        B43_WARN_ON(average_tssi >= B43_TSSI_MAX);

        /* Estimate the TX power emission based on the TSSI */
        estimated_pwr = b43_gphy_estimate_power_out(dev, average_tssi);

        B43_WARN_ON(phy->type != B43_PHYTYPE_G);
        max_pwr = dev->dev->bus_sprom->maxpwr_bg;
        if (dev->dev->bus_sprom->boardflags_lo & B43_BFL_PACTRL)
                max_pwr -= 3; /* minus 0.75 */
        if (unlikely(max_pwr >= INT_TO_Q52(30/*dBm*/))) {
                b43warn(dev->wl,
                        "Invalid max-TX-power value in SPROM.\n");
                max_pwr = INT_TO_Q52(20); /* fake it */
                dev->dev->bus_sprom->maxpwr_bg = max_pwr;
        }

        /* Get desired power (in Q5.2) */
        if (phy->desired_txpower < 0)
                desired_pwr = INT_TO_Q52(0);
        else
                desired_pwr = INT_TO_Q52(phy->desired_txpower);
        /* And limit it. max_pwr already is Q5.2 */
        desired_pwr = clamp_val(desired_pwr, 0, max_pwr);
        if (b43_debug(dev, B43_DBG_XMITPOWER)) {
                b43dbg(dev->wl,
                       "[TX power]  current = " Q52_FMT
                       " dBm,  desired = " Q52_FMT
                       " dBm,  max = " Q52_FMT "\n",
                       Q52_ARG(estimated_pwr),
                       Q52_ARG(desired_pwr),
                       Q52_ARG(max_pwr));
        }

        /* Calculate the adjustment delta. */
        pwr_adjust = desired_pwr - estimated_pwr;
        if (pwr_adjust == 0)
                goto no_adjustment_needed;

        /* RF attenuation delta. */
        rfatt_delta = ((pwr_adjust + 7) / 8);
        /* Lower attenuation => Bigger power output. Negate it. */
        rfatt_delta = -rfatt_delta;

        /* Baseband attenuation delta. */
        bbatt_delta = pwr_adjust / 2;
        /* Lower attenuation => Bigger power output. Negate it. */
        bbatt_delta = -bbatt_delta;
        /* RF att affects power level 4 times as much as
         * Baseband attennuation. Subtract it. */
        bbatt_delta -= 4 * rfatt_delta;

#if B43_DEBUG
        if (b43_debug(dev, B43_DBG_XMITPOWER)) {
                int dbm = pwr_adjust < 0 ? -pwr_adjust : pwr_adjust;
                b43dbg(dev->wl,
                       "[TX power deltas]  %s" Q52_FMT " dBm   =>   "
                       "bbatt-delta = %d,  rfatt-delta = %d\n",
                       (pwr_adjust < 0 ? "-" : ""), Q52_ARG(dbm),
                       bbatt_delta, rfatt_delta);
        }
#endif /* DEBUG */

        /* So do we finally need to adjust something in hardware? */
        if ((rfatt_delta == 0) && (bbatt_delta == 0))
                goto no_adjustment_needed;

        /* Save the deltas for later when we adjust the power. */
        gphy->bbatt_delta = bbatt_delta;
        gphy->rfatt_delta = rfatt_delta;

        /* We need to adjust the TX power on the device. */
        return B43_TXPWR_RES_NEED_ADJUST;

no_adjustment_needed:
        return B43_TXPWR_RES_DONE;
}

static void b43_gphy_op_pwork_15sec(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;
        struct b43_phy_g *gphy = phy->g;

        b43_mac_suspend(dev);
        //TODO: update_aci_moving_average
        if (gphy->aci_enable && gphy->aci_wlan_automatic) {
                if (!gphy->aci_enable && 1 /*TODO: not scanning? */ ) {
                        if (0 /*TODO: bunch of conditions */ ) {
                                phy->ops->interf_mitigation(dev,
                                        B43_INTERFMODE_MANUALWLAN);
                        }
                } else if (0 /*TODO*/) {
                           if (/*(aci_average > 1000) &&*/ !b43_gphy_aci_scan(dev))
                                phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
                }
        } else if (gphy->interfmode == B43_INTERFMODE_NONWLAN &&
                   phy->rev == 1) {
                //TODO: implement rev1 workaround
        }
        b43_lo_g_maintenance_work(dev);
        b43_mac_enable(dev);
}

static void b43_gphy_op_pwork_60sec(struct b43_wldev *dev)
{
        struct b43_phy *phy = &dev->phy;

        if (!(dev->dev->bus_sprom->boardflags_lo & B43_BFL_RSSI))
                return;

        b43_mac_suspend(dev);
        b43_calc_nrssi_slope(dev);
        if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
                u8 old_chan = phy->channel;

                /* VCO Calibration */
                if (old_chan >= 8)
                        b43_switch_channel(dev, 1);
                else
                        b43_switch_channel(dev, 13);
                b43_switch_channel(dev, old_chan);
        }
        b43_mac_enable(dev);
}

const struct b43_phy_operations b43_phyops_g = {
        .allocate               = b43_gphy_op_allocate,
        .free                   = b43_gphy_op_free,
        .prepare_structs        = b43_gphy_op_prepare_structs,
        .prepare_hardware       = b43_gphy_op_prepare_hardware,
        .init                   = b43_gphy_op_init,
        .exit                   = b43_gphy_op_exit,
        .phy_read               = b43_gphy_op_read,
        .phy_write              = b43_gphy_op_write,
        .radio_read             = b43_gphy_op_radio_read,
        .radio_write            = b43_gphy_op_radio_write,
        .supports_hwpctl        = b43_gphy_op_supports_hwpctl,
        .software_rfkill        = b43_gphy_op_software_rfkill,
        .switch_analog          = b43_phyop_switch_analog_generic,
        .switch_channel         = b43_gphy_op_switch_channel,
        .get_default_chan       = b43_gphy_op_get_default_chan,
        .set_rx_antenna         = b43_gphy_op_set_rx_antenna,
        .interf_mitigation      = b43_gphy_op_interf_mitigation,
        .recalc_txpower         = b43_gphy_op_recalc_txpower,
        .adjust_txpower         = b43_gphy_op_adjust_txpower,
        .pwork_15sec            = b43_gphy_op_pwork_15sec,
        .pwork_60sec            = b43_gphy_op_pwork_60sec,
};