drivers/net/wireless/b43/phy_g.c

/*

  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 <mb@bu3sch.de>
  Copyright (c) 2005, 2006 Danny van Dyk <kugelfang@gentoo.org>
  Copyright (c) 2005, 2006 Andreas Jaggi <andreas.jaggi@waterwave.ch>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; see the file COPYING.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  Boston, MA 02110-1301, USA.

*/

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

#include <linux/bitrev.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_write(dev, B43_PHY_DACCTL,
			      (b43_phy_read(dev, B43_PHY_DACCTL)
			       & 0xFFC3) | (baseband_attenuation << 2));
	} else {
		b43_phy_write(dev, B43_PHY_DACCTL,
			      (b43_phy_read(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_write16(dev, 0x43, (b43_radio_read16(dev, 0x43)
					      & 0xFFF0) | (rf & 0x000F));
		b43_radio_write16(dev, 0x52, (b43_radio_read16(dev, 0x52)
					      & ~0x0070) | (tx_control &
							    0x0070));
	}
	if (has_tx_magnification(phy)) {
		b43_radio_write16(dev, 0x52, tx_magn | tx_bias);
	} else {
		b43_radio_write16(dev, 0x52, (b43_radio_read16(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_write(dev, 0x04A0,
			      (b43_phy_read(dev, 0x04A0) & 0xBFBF) | tmp);
		b43_phy_write(dev, 0x04A1,
			      (b43_phy_read(dev, 0x04A1) & 0xBFBF) | tmp);
		b43_phy_write(dev, 0x04A2,
			      (b43_phy_read(dev, 0x04A2) & 0xBFBF) | tmp);
	}
	b43_dummy_transmission(dev);
}

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_write(dev, 0x04A0,
		      (b43_phy_read(dev, 0x04A0) & 0xBFBF) | 0x4040);
	b43_phy_write(dev, 0x04A1,
		      (b43_phy_read(dev, 0x04A1) & 0xBFBF) | 0x4040);
	b43_phy_write(dev, 0x04A2,
		      (b43_phy_read(dev, 0x04A2) & 0xBFBF) | 0x4000);
	b43_dummy_transmission(dev);
}

/* http://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);
}

/* http://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;
}

/* http://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);
	}
}

/* http://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_write(dev, 0x0429, b43_phy_read(dev, 0x0429) & 0x7FFF);
	b43_phy_write(dev, 0x0001,
		      (b43_phy_read(dev, 0x0001) & 0x3FFF) | 0x4000);
	b43_phy_set(dev, 0x0811, 0x000C);
	b43_phy_write(dev, 0x0812,
		      (b43_phy_read(dev, 0x0812) & 0xFFF3) | 0x0004);
	b43_phy_write(dev, 0x0802, b43_phy_read(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_write16(dev, 0x007A, b43_radio_read16(dev, 0x007A) | 0x0070);
	b43_radio_write16(dev, 0x007A, b43_radio_read16(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_write16(dev, 0x007A,
				  b43_radio_read16(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_write(dev, 0x0815,
				      b43_phy_read(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_write(dev, 0x0815,
				      b43_phy_read(dev, 0x0815) & 0xFFFB);
		}
		b43_phy_write(dev, 0x0003, (b43_phy_read(dev, 0x0003) & 0xFF9F)
			      | 0x0040);
		b43_radio_write16(dev, 0x007A,
				  b43_radio_read16(dev, 0x007A) | 0x000F);
		b43_set_all_gains(dev, 3, 0, 1);
		b43_radio_write16(dev, 0x0043, (b43_radio_read16(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_write(dev, B43_PHY_G_CRS,
		      b43_phy_read(dev, B43_PHY_G_CRS) & 0x7FFF);
	b43_phy_write(dev, 0x0802, b43_phy_read(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_write(dev, 0x0801,
				      b43_phy_read(dev, 0x0801)
				      & 0xFFBF);
			break;
		}
		b43_phy_set(dev, 0x0060, 0x0040);
		b43_phy_set(dev, 0x0014, 0x0200);
	}
	b43_radio_write16(dev, 0x007A,
			  b43_radio_read16(dev, 0x007A) | 0x0070);
	b43_set_all_gains(dev, 0, 8, 0);
	b43_radio_write16(dev, 0x007A,
			  b43_radio_read16(dev, 0x007A) & 0x00F7);
	if (phy->rev >= 2) {
		b43_phy_write(dev, 0x0811,
			      (b43_phy_read(dev, 0x0811) & 0xFFCF) |
			      0x0030);
		b43_phy_write(dev, 0x0812,
			      (b43_phy_read(dev, 0x0812) & 0xFFCF) |
			      0x0010);
	}
	b43_radio_write16(dev, 0x007A,
			  b43_radio_read16(dev, 0x007A) | 0x0080);
	udelay(20);

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

	b43_radio_write16(dev, 0x007A,
			  b43_radio_read16(dev, 0x007A) & 0x007F);
	if (phy->rev >= 2) {
		b43_phy_write(dev, 0x0003, (b43_phy_read(dev, 0x0003)
					    & 0xFF9F) | 0x0040);
	}

	b43_write16(dev, B43_MMIO_CHANNEL_EXT,
		    b43_read16(dev, B43_MMIO_CHANNEL_EXT)
		    | 0x2000);
	b43_radio_write16(dev, 0x007A,
			  b43_radio_read16(dev, 0x007A) | 0x000F);
	b43_phy_write(dev, 0x0015, 0xF330);
	if (phy->rev >= 2) {
		b43_phy_write(dev, 0x0812,
			      (b43_phy_read(dev, 0x0812) & 0xFFCF) |
			      0x0020);
		b43_phy_write(dev, 0x0811,
			      (b43_phy_read(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_write(dev, 0x0812,
			      b43_phy_read(dev, 0x0812) & 0xFFCF);
		b43_phy_write(dev, 0x0811,
			      b43_phy_read(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_write(dev, 0x048A,
				      (b43_phy_read(dev, 0x048A)
				       & 0xF000) | 0x09EB);
		} else {
			b43_phy_write(dev, 0x048A,
				      (b43_phy_read(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_write(dev, B43_PHY_G_CRS,
				      b43_phy_read(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_write(dev, 0x04A0,
			      (b43_phy_read(dev, 0x04A0) & 0xC0C0) | 0x0008);
		phy_stacksave(0x04A1);
		b43_phy_write(dev, 0x04A1,
			      (b43_phy_read(dev, 0x04A1) & 0xC0C0) | 0x0605);
		phy_stacksave(0x04A2);
		b43_phy_write(dev, 0x04A2,
			      (b43_phy_read(dev, 0x04A2) & 0xC0C0) | 0x0204);
		phy_stacksave(0x04A8);
		b43_phy_write(dev, 0x04A8,
			      (b43_phy_read(dev, 0x04A8) & 0xC0C0) | 0x0803);
		phy_stacksave(0x04AB);
		b43_phy_write(dev, 0x04AB,
			      (b43_phy_read(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 = 1;

		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_write(dev, B43_PHY_RADIO_BITFIELD,
			      b43_phy_read(dev, B43_PHY_RADIO_BITFIELD)
			      & ~0x1000);
		b43_phy_write(dev, B43_PHY_G_CRS,
			      (b43_phy_read(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_write(dev, 0x04A0, (b43_phy_read(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_write(dev, 0x04A1, (b43_phy_read(dev, 0x04A1)
					    & 0xC0FF) | 0x1800);
		b43_phy_write(dev, 0x04A1, (b43_phy_read(dev, 0x04A1)
					    & 0xFFC0) | 0x0015);
		b43_phy_write(dev, 0x04A8, (b43_phy_read(dev, 0x04A8)
					    & 0xCFFF) | 0x1000);
		b43_phy_write(dev, 0x04A8, (b43_phy_read(dev, 0x04A8)
					    & 0xF0FF) | 0x0A00);
		b43_phy_write(dev, 0x04AB, (b43_phy_read(dev, 0x04AB)
					    & 0xCFFF) | 0x1000);
		b43_phy_write(dev, 0x04AB, (b43_phy_read(dev, 0x04AB)
					    & 0xF0FF) | 0x0800);
		b43_phy_write(dev, 0x04AB, (b43_phy_read(dev, 0x04AB)
					    & 0xFFCF) | 0x0010);
		b43_phy_write(dev, 0x04AB, (b43_phy_read(dev, 0x04AB)
					    & 0xFFF0) | 0x0005);
		b43_phy_write(dev, 0x04A8, (b43_phy_read(dev, 0x04A8)
					    & 0xFFCF) | 0x0010);
		b43_phy_write(dev, 0x04A8, (b43_phy_read(dev, 0x04A8)
					    & 0xFFF0) | 0x0006);
		b43_phy_write(dev, 0x04A2, (b43_phy_read(dev, 0x04A2)
					    & 0xF0FF) | 0x0800);
		b43_phy_write(dev, 0x04A0, (b43_phy_read(dev, 0x04A0)
					    & 0xF0FF) | 0x0500);
		b43_phy_write(dev, 0x04A2, (b43_phy_read(dev, 0x04A2)
					    & 0xFFF0) | 0x000B);

		if (phy->rev >= 3) {
			b43_phy_write(dev, 0x048A, b43_phy_read(dev, 0x048A)
				      & ~0x8000);
			b43_phy_write(dev, 0x0415, (b43_phy_read(dev, 0x0415)
						    & 0x8000) | 0x36D8);
			b43_phy_write(dev, 0x0416, (b43_phy_read(dev, 0x0416)
						    & 0x8000) | 0x36D8);
			b43_phy_write(dev, 0x0417, (b43_phy_read(dev, 0x0417)
						    & 0xFE00) | 0x016D);
		} else {
			b43_phy_set(dev, 0x048A, 0x1000);
			b43_phy_write(dev, 0x048A, (b43_phy_read(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_write(dev, 0x048C, (b43_phy_read(dev, 0x048C)
					    & 0xF0FF) | 0x0200);
		if (phy->rev == 2) {
			b43_phy_write(dev, 0x04AE, (b43_phy_read(dev, 0x04AE)
						    & 0xFF00) | 0x007F);
			b43_phy_write(dev, 0x04AD, (b43_phy_read(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_write(dev, 0x04AD, b43_phy_read(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_write(dev, 0x042B,
				      b43_phy_read(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_write(dev, 0x042B, b43_phy_read(dev, 0x042B) & ~0x0800);
		if (!dev->bad_frames_preempt) {
			b43_phy_write(dev, B43_PHY_RADIO_BITFIELD,
				      b43_phy_read(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 = 0;

		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_write(dev, B43_PHY_ANALOGOVERVAL,
			      b43_phy_read(dev, B43_PHY_ANALOGOVERVAL)
			      & 0xFFFC);
		b43_phy_write(dev, B43_PHY_CRS0, b43_phy_read(dev, B43_PHY_CRS0)
			      & 0x7FFF);
		b43_phy_write(dev, B43_PHY_CLASSCTL,
			      b43_phy_read(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_write(dev, B43_PHY_SYNCCTL, b43_phy_read(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_write(dev, B43_PHY_CCK(0x03),
				      (b43_phy_read(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_write16(dev, 0x51, b43_radio_read16(dev, 0x51)
			  | 0x0004);
	if (phy->radio_rev == 8) {
		b43_radio_write16(dev, 0x43, 0x1F);
	} else {
		b43_radio_write16(dev, 0x52, 0);
		b43_radio_write16(dev, 0x43, (b43_radio_read16(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 ssb_bus *bus = dev->dev->bus;
	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_write16(dev, 0x007A, b43_radio_read16(dev, 0x007A)
				  | 0x0050);
	}
	if ((bus->boardinfo.vendor != SSB_BOARDVENDOR_BCM) &&
	    (bus->boardinfo.type != SSB_BOARD_BU4306)) {
		value = 0x2120;
		for (offset = 0x00A8; offset < 0x00C7; offset++) {
			b43_phy_write(dev, offset, value);
			value += 0x202;
		}
	}
	b43_phy_write(dev, 0x0035, (b43_phy_read(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_write16(dev, 0x007A,
					  b43_radio_read16(dev, 0x007A)
					  | 0x0020);
			b43_radio_write16(dev, 0x0051,
					  b43_radio_read16(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_write(dev, 0x0013,
			      (b43_phy_read(dev, 0x0013) & 0x00FF) | 0x1900);
		b43_phy_write(dev, 0x0035,
			      (b43_phy_read(dev, 0x0035) & 0xFFC0) | 0x0064);
		b43_phy_write(dev, 0x005D,
			      (b43_phy_read(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_write16(dev, 0x007A, b43_radio_read16(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);
}

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_write16(dev, 0x007A,
				  b43_radio_read16(dev, 0x007A) | 0x0020);
		b43_radio_write16(dev, 0x0051,
				  b43_radio_read16(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, 0x7C, 0x20);
		b43_radio_write16(dev, 0x5A, 0x70);
		b43_radio_write16(dev, 0x5B, 0x7B);
		b43_radio_write16(dev, 0x5C, 0xB0);
	}
	b43_radio_write16(dev, 0x007A,
			  (b43_radio_read16(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 <= 5) {
		b43_phy_write(dev, 0x5D, (b43_phy_read(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_write(dev, 0x61, b43_phy_read(dev, 0x61)
			      & 0x0FFF);
	} else {
		b43_phy_write(dev, 0x0002, (b43_phy_read(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_write(dev, B43_PHY_CRS0,
		      b43_phy_read(dev, B43_PHY_CRS0) & 0x3FFF);
	b43_phy_set(dev, B43_PHY_CCKBBANDCFG, 0x8000);
	b43_phy_set(dev, B43_PHY_RFOVER, 0x0002);
	b43_phy_write(dev, B43_PHY_RFOVERVAL,
		      b43_phy_read(dev, B43_PHY_RFOVERVAL) & 0xFFFD);
	b43_phy_set(dev, B43_PHY_RFOVER, 0x0001);
	b43_phy_write(dev, B43_PHY_RFOVERVAL,
		      b43_phy_read(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_write(dev, B43_PHY_ANALOGOVERVAL,
			      b43_phy_read(dev,
					   B43_PHY_ANALOGOVERVAL) & 0xFFFE);
		b43_phy_set(dev, B43_PHY_ANALOGOVER, 0x0002);
		b43_phy_write(dev, B43_PHY_ANALOGOVERVAL,
			      b43_phy_read(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_write(dev, B43_PHY_RFOVERVAL,
		      (b43_phy_read(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_write(dev, B43_PHY_ANALOGOVERVAL,
			      b43_phy_read(dev,
					   B43_PHY_ANALOGOVERVAL) & 0xFFFB);
	}
	b43_phy_write(dev, B43_PHY_CCK(0x03),
		      (b43_phy_read(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_write16(dev, 0x43, (b43_radio_read16(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_write(dev, B43_PHY_CCK(0x2B),
		      (b43_phy_read(dev, B43_PHY_CCK(0x2B))
		       & 0xFFC0) | 0x01);
	b43_phy_write(dev, B43_PHY_CCK(0x2B),
		      (b43_phy_read(dev, B43_PHY_CCK(0x2B))
		       & 0xC0FF) | 0x800);

	b43_phy_set(dev, B43_PHY_RFOVER, 0x0100);
	b43_phy_write(dev, B43_PHY_RFOVERVAL,
		      b43_phy_read(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_write16(dev, 0x7A, b43_radio_read16(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_write(dev, B43_PHY_RFOVERVAL,
				      (b43_phy_read(dev, B43_PHY_RFOVERVAL)
				       & 0xF0FF) | (j << 8));
			b43_phy_write(dev, B43_PHY_PGACTL,
				      (b43_phy_read(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_write(dev, B43_PHY_RFOVERVAL,
				      (b43_phy_read(dev, B43_PHY_RFOVERVAL)
				       & 0xF0FF) | (j << 8));
			b43_phy_write(dev, B43_PHY_PGACTL,
				      (b43_phy_read(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_write(dev, 0x0036, b43_phy_read(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_write(dev, 0x047A, (b43_phy_read(dev, 0x047A)
					    & 0xFF0F) | 0x0010);
		b43_phy_set(dev, 0x005D, 0x8000);
		b43_phy_write(dev, 0x004E, (b43_phy_read(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_write(dev, 0x005D, b43_phy_read(dev, 0x005D)
			      & 0x7FFF);
		b43_phy_write(dev, 0x004F, b43_phy_read(dev, 0x004F)
			      & 0xFFFE);
		b43_phy_write(dev, 0x004E, (b43_phy_read(dev, 0x004E)
					    & 0xFFC0) | 0x0010);
		b43_phy_write(dev, 0x002E, 0xC07F);
		b43_phy_write(dev, 0x047A, (b43_phy_read(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_write(dev, 0x0036, (b43_phy_read(dev, 0x0036) & 0xFFC0)
		      | (gphy->tgt_idle_tssi - gphy->cur_idle_tssi));
	b43_phy_write(dev, 0x0478, (b43_phy_read(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_write(dev, 0x0060, b43_phy_read(dev, 0x0060) & 0xFFBF);
	b43_phy_write(dev, 0x0014, 0x0000);

	B43_WARN_ON(phy->rev < 6);
	b43_phy_set(dev, 0x0478, 0x0800);
	b43_phy_write(dev, 0x0478, b43_phy_read(dev, 0x0478)
		      & 0xFEFF);
	b43_phy_write(dev, 0x0801, b43_phy_read(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);
}

/* Intialize B/G PHY power control */
static void b43_phy_init_pctl(struct b43_wldev *dev)
{
	struct ssb_bus *bus = dev->dev->bus;
	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 ((bus->boardinfo.vendor == SSB_BOARDVENDOR_BCM) &&
	    (bus->boardinfo.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_write16(dev, 0x0076,
					  (b43_radio_read16(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 = 1;
			} else {
				rfatt.att = 9;
				rfatt.with_padmix = 0;
			}
			b43_set_txpower_g(dev, &bbatt, &rfatt, 0);
		}
		b43_dummy_transmission(dev);
		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_write16(dev, 0x0076,
					  b43_radio_read16(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_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_write(dev, B43_PHY_OFDM(0xCC),
				      (b43_phy_read(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_write16(dev, 0x52,
				  (b43_radio_read16(dev, 0x52) & 0xFFF0)
				  | gphy->lo_control->tx_bias);
	}
	if (phy->rev >= 6) {
		b43_phy_write(dev, B43_PHY_CCK(0x36),
			      (b43_phy_read(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->bus->chip_id == 0x4306
	     && dev->dev->bus->chip_package == 2) || 0) {
		b43_phy_write(dev, B43_PHY_CRS0, b43_phy_read(dev, B43_PHY_CRS0)
			      & 0xBFFF);
		b43_phy_write(dev, B43_PHY_OFDM(0xC3),
			      b43_phy_read(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 ssb_bus *bus = dev->dev->bus;
	struct b43_phy *phy = &dev->phy;

	rf->with_padmix = 0;

	if (bus->boardinfo.vendor == SSB_BOARDVENDOR_BCM &&
	    bus->boardinfo.type == SSB_BOARD_BCM4309G) {
		if (bus->boardinfo.rev < 0x43) {
			rf->att = 2;
			return;
		} else if (bus->boardinfo.rev < 0x51) {
			rf->att = 3;
			return;
		}
	}

	if (phy->type == B43_PHYTYPE_A) {
		rf->att = 0x60;
		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 (bus->boardinfo.vendor == SSB_BOARDVENDOR_BCM
				    && bus->boardinfo.type == SSB_BOARD_BCM4309G
				    && bus->boardinfo.rev >= 30)
					rf->att = 3;
				else if (bus->boardinfo.vendor ==
					 SSB_BOARDVENDOR_BCM
					 && bus->boardinfo.type ==
					 SSB_BOARD_BU4306)
					rf->att = 3;
				else
					rf->att = 1;
			} else {
				if (bus->boardinfo.vendor == SSB_BOARDVENDOR_BCM
				    && bus->boardinfo.type == SSB_BOARD_BCM4309G
				    && bus->boardinfo.rev >= 30)
					rf->att = 7;
				else
					rf->att = 6;
			}
			return;
		case 2:
			if (phy->type == B43_PHYTYPE_G) {
				if (bus->boardinfo.vendor == SSB_BOARDVENDOR_BCM
				    && bus->boardinfo.type == SSB_BOARD_BCM4309G
				    && bus->boardinfo.rev >= 30)
					rf->att = 3;
				else if (bus->boardinfo.vendor ==
					 SSB_BOARDVENDOR_BCM
					 && bus->boardinfo.type ==
					 SSB_BOARD_BU4306)
					rf->att = 5;
				else if (bus->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 = 1;
			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];
	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_write(dev, 0x0802, b43_phy_read(dev, 0x0802) & 0xFFFC);
	b43_phy_write(dev, B43_PHY_G_CRS,
		      b43_phy_read(dev, B43_PHY_G_CRS) & 0x7FFF);
	b43_set_all_gains(dev, 3, 8, 1);

	start = (channel - 5 > 0) ? 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_write(dev, 0x0802,
		      (b43_phy_read(dev, 0x0802) & 0xFFFC) | 0x0003);
	b43_phy_write(dev, 0x0403, b43_phy_read(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->bus->chip_id == 0x4301) &&
		    (phy->radio_ver != 0x2050)); /* Not supported anymore */

	gphy->dyn_tssi_tbl = 0;

	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 = 1;
	} 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(sizeof(*gphy), GFP_KERNEL);
	if (!gphy) {
		err = -ENOMEM;
		goto error;
	}
	dev->phy.g = gphy;

	lo = kzalloc(sizeof(*lo), GFP_KERNEL);
	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 = 0;
	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 = 0;
		b43_wireless_core_reset(dev, 0);
		b43_phy_initg(dev);
		phy->gmode = 1;
		b43_wireless_core_reset(dev, B43_TMSLOW_GMODE);
	}

	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_write16(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_write16(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_write16(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_write16(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,
					enum rfkill_state state)
{
	struct b43_phy *phy = &dev->phy;
	struct b43_phy_g *gphy = phy->g;
	unsigned int channel;

	might_sleep();

	if (state == RFKILL_STATE_UNBLOCKED) {
		/* 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 = 0;
		}
		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 = 1;
		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;
	u64 hf;
	u16 tmp;
	int autodiv = 0;

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

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

	tmp = b43_phy_read(dev, B43_PHY_BBANDCFG);
	tmp &= ~B43_PHY_BBANDCFG_RXANT;
	tmp |= (autodiv ? B43_ANTENNA_AUTO0 : antenna)
			<< B43_PHY_BBANDCFG_RXANT_SHIFT;
	b43_phy_write(dev, B43_PHY_BBANDCFG, tmp);

	if (autodiv) {
		tmp = b43_phy_read(dev, B43_PHY_ANTDWELL);
		if (antenna == B43_ANTENNA_AUTO0)
			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 (phy->rev >= 2) {
		tmp = b43_phy_read(dev, B43_PHY_OFDM61);
		tmp |= B43_PHY_OFDM61_10;
		b43_phy_write(dev, B43_PHY_OFDM61, tmp);

		tmp =
		    b43_phy_read(dev, B43_PHY_DIVSRCHGAINBACK);
		tmp = (tmp & 0xFF00) | 0x15;
		b43_phy_write(dev, B43_PHY_DIVSRCHGAINBACK,
			      tmp);

		if (phy->rev == 2) {
			b43_phy_write(dev, B43_PHY_ADIVRELATED,
				      8);
		} else {
			tmp =
			    b43_phy_read(dev,
					 B43_PHY_ADIVRELATED);
			tmp = (tmp & 0xFF00) | 8;
			b43_phy_write(dev, B43_PHY_ADIVRELATED,
				      tmp);
		}
	}
	if (phy->rev >= 6)
		b43_phy_write(dev, B43_PHY_OFDM9B, 0xDC);

	hf |= B43_HF_ANTDIVHELP;
	b43_hf_write(dev, hf);
}

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 = 0;
	switch (mode) {
	case B43_INTERFMODE_AUTOWLAN:
		gphy->aci_wlan_automatic = 1;
		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 = 0;
		gphy->aci_hw_rssi = 0;
	} else
		b43_radio_interference_mitigation_enable(dev, mode);
	gphy->interfmode = mode;

	return 0;
}

/* http://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);

	spin_lock_irq(&dev->wl->irq_lock);

	/* 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;

	/* We drop the lock early, so we can sleep during hardware
	 * adjustment. Possible races with op_recalc_txpower are harmless,
	 * as we will be called once again in case we raced. */
	spin_unlock_irq(&dev->wl->irq_lock);

	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_maintanance_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,
};