From 0737a3d4a5185bced2e24fae37477b7cbbbade10 Mon Sep 17 00:00:00 2001
From: Peter Denison <openwrt@marshadder.org>
Date: Thu, 21 Jun 2007 20:45:45 +0000
Subject: New: mac80211-based bcm43xx driver from the wireless-dev tree

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7693 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_lo.c | 1111 +++++++++++++++++++++
 1 file changed, 1111 insertions(+)
 create mode 100644 package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_lo.c

(limited to 'package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_lo.c')

diff --git a/package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_lo.c b/package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_lo.c
new file mode 100644
index 0000000000..a2210345ea
--- /dev/null
+++ b/package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_lo.c
@@ -0,0 +1,1111 @@
+/*
+
+  Broadcom BCM43xx wireless driver
+
+  G PHY LO (LocalOscillator) Measuring and Control routines
+
+  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+  Copyright (c) 2005, 2006 Stefano Brivio <st3@riseup.net>
+  Copyright (c) 2005-2007 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 "bcm43xx.h"
+#include "bcm43xx_lo.h"
+#include "bcm43xx_phy.h"
+#include "bcm43xx_main.h"
+
+#include <linux/delay.h>
+
+
+/* Write the LocalOscillator Control (adjust) value-pair. */
+static void bcm43xx_lo_write(struct bcm43xx_wldev *dev,
+			     struct bcm43xx_loctl *control)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	u16 value;
+	u16 reg;
+
+	if (BCM43xx_DEBUG) {
+		if (unlikely(abs(control->i) > 16 ||
+			     abs(control->q) > 16)) {
+			printk(KERN_ERR PFX "ERROR: Invalid LO control pair "
+					    "(I: %d, Q: %d)\n",
+			       control->i, control->q);
+			dump_stack();
+			return;
+		}
+	}
+
+	value = (u8)(control->q);
+	value |= ((u8)(control->i)) << 8;
+
+	reg = (phy->type == BCM43xx_PHYTYPE_B) ? 0x002F : BCM43xx_PHY_LO_CTL;
+	bcm43xx_phy_write(dev, reg, value);
+}
+
+static inline
+void assert_rfatt_and_bbatt(const struct bcm43xx_rfatt *rfatt,
+			    const struct bcm43xx_bbatt *bbatt)
+{
+	if (BCM43xx_DEBUG) {
+		int err = 0;
+
+		if (unlikely(rfatt->att >= 16)) {
+			dprintk(KERN_ERR PFX "ERROR: invalid rf_att: %u\n",
+				rfatt->att);
+			err = 1;
+		}
+		if (unlikely(bbatt->att >= 9)) {
+			dprintk(KERN_ERR PFX "ERROR: invalid bband_att: %u\n",
+				bbatt->att);
+			err = 1;
+		}
+		if (unlikely(err))
+			dump_stack();
+	}
+}
+
+static
+struct bcm43xx_loctl * bcm43xx_get_lo_g_ctl_nopadmix(struct bcm43xx_wldev *dev,
+						  const struct bcm43xx_rfatt *rfatt,
+						  const struct bcm43xx_bbatt *bbatt)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
+
+	assert_rfatt_and_bbatt(rfatt, bbatt);
+	return &(lo->no_padmix[bbatt->att][rfatt->att]);
+}
+
+struct bcm43xx_loctl * bcm43xx_get_lo_g_ctl(struct bcm43xx_wldev *dev,
+					 const struct bcm43xx_rfatt *rfatt,
+					 const struct bcm43xx_bbatt *bbatt)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
+	struct bcm43xx_loctl *ret;
+
+	assert_rfatt_and_bbatt(rfatt, bbatt);
+	if (rfatt->with_padmix)
+		ret = &(lo->with_padmix[bbatt->att][rfatt->att]);
+	else
+		ret = &(lo->no_padmix[bbatt->att][rfatt->att]);
+
+	return ret;
+}
+
+/* Call a function for every possible LO control value-pair. */
+static int bcm43xx_call_for_each_loctl(struct bcm43xx_wldev *dev,
+				       int (*func)(struct bcm43xx_wldev *,
+						   struct bcm43xx_loctl *))
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *ctl = phy->lo_control;
+	int i, j;
+	int err;
+
+	for (i = 0; i < BCM43xx_NR_BB; i++) {
+		for (j = 0; j < BCM43xx_NR_RF; j++) {
+			err = func(dev, &(ctl->with_padmix[i][j]));
+			if (unlikely(err))
+				return err;
+		}
+	}
+	for (i = 0; i < BCM43xx_NR_BB; i++) {
+		for (j = 0; j < BCM43xx_NR_RF; j++) {
+			err = func(dev, &(ctl->no_padmix[i][j]));
+			if (unlikely(err))
+				return err;
+		}
+	}
+
+	return 0;
+}
+
+static u16 lo_b_r15_loop(struct bcm43xx_wldev *dev)
+{
+	int i;
+	u16 ret = 0;
+
+	for (i = 0; i < 10; i++){
+		bcm43xx_phy_write(dev, 0x0015, 0xAFA0);
+		udelay(1);
+		bcm43xx_phy_write(dev, 0x0015, 0xEFA0);
+		udelay(10);
+		bcm43xx_phy_write(dev, 0x0015, 0xFFA0);
+		udelay(40);
+		ret += bcm43xx_phy_read(dev, 0x002C);
+	}
+
+	return ret;
+}
+
+void bcm43xx_lo_b_measure(struct bcm43xx_wldev *dev)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	u16 regstack[12] = { 0 };
+	u16 mls;
+	u16 fval;
+	int i, j;
+
+	regstack[0] = bcm43xx_phy_read(dev, 0x0015);
+	regstack[1] = bcm43xx_radio_read16(dev, 0x0052) & 0xFFF0;
+
+	if (phy->radio_ver == 0x2053) {
+		regstack[2] = bcm43xx_phy_read(dev, 0x000A);
+		regstack[3] = bcm43xx_phy_read(dev, 0x002A);
+		regstack[4] = bcm43xx_phy_read(dev, 0x0035);
+		regstack[5] = bcm43xx_phy_read(dev, 0x0003);
+		regstack[6] = bcm43xx_phy_read(dev, 0x0001);
+		regstack[7] = bcm43xx_phy_read(dev, 0x0030);
+
+		regstack[8] = bcm43xx_radio_read16(dev, 0x0043);
+		regstack[9] = bcm43xx_radio_read16(dev, 0x007A);
+		regstack[10] = bcm43xx_read16(dev, 0x03EC);
+		regstack[11] = bcm43xx_radio_read16(dev, 0x0052) & 0x00F0;
+
+		bcm43xx_phy_write(dev, 0x0030, 0x00FF);
+		bcm43xx_write16(dev, 0x03EC, 0x3F3F);
+		bcm43xx_phy_write(dev, 0x0035, regstack[4] & 0xFF7F);
+		bcm43xx_radio_write16(dev, 0x007A, regstack[9] & 0xFFF0);
+	}
+	bcm43xx_phy_write(dev, 0x0015, 0xB000);
+	bcm43xx_phy_write(dev, 0x002B, 0x0004);
+
+	if (phy->radio_ver == 0x2053) {
+		bcm43xx_phy_write(dev, 0x002B, 0x0203);
+		bcm43xx_phy_write(dev, 0x002A, 0x08A3);
+	}
+
+	phy->minlowsig[0] = 0xFFFF;
+
+	for (i = 0; i < 4; i++) {
+		bcm43xx_radio_write16(dev, 0x0052, regstack[1] | i);
+		lo_b_r15_loop(dev);
+	}
+	for (i = 0; i < 10; i++) {
+		bcm43xx_radio_write16(dev, 0x0052, regstack[1] | i);
+		mls = lo_b_r15_loop(dev) / 10;
+		if (mls < phy->minlowsig[0]) {
+			phy->minlowsig[0] = mls;
+			phy->minlowsigpos[0] = i;
+		}
+	}
+	bcm43xx_radio_write16(dev, 0x0052, regstack[1] | phy->minlowsigpos[0]);
+
+	phy->minlowsig[1] = 0xFFFF;
+
+	for (i = -4; i < 5; i += 2) {
+		for (j = -4; j < 5; j += 2) {
+			if (j < 0)
+				fval = (0x0100 * i) + j + 0x0100;
+			else
+				fval = (0x0100 * i) + j;
+			bcm43xx_phy_write(dev, 0x002F, fval);
+			mls = lo_b_r15_loop(dev) / 10;
+			if (mls < phy->minlowsig[1]) {
+				phy->minlowsig[1] = mls;
+				phy->minlowsigpos[1] = fval;
+			}
+		}
+	}
+	phy->minlowsigpos[1] += 0x0101;
+
+	bcm43xx_phy_write(dev, 0x002F, phy->minlowsigpos[1]);
+	if (phy->radio_ver == 0x2053) {
+		bcm43xx_phy_write(dev, 0x000A, regstack[2]);
+		bcm43xx_phy_write(dev, 0x002A, regstack[3]);
+		bcm43xx_phy_write(dev, 0x0035, regstack[4]);
+		bcm43xx_phy_write(dev, 0x0003, regstack[5]);
+		bcm43xx_phy_write(dev, 0x0001, regstack[6]);
+		bcm43xx_phy_write(dev, 0x0030, regstack[7]);
+
+		bcm43xx_radio_write16(dev, 0x0043, regstack[8]);
+		bcm43xx_radio_write16(dev, 0x007A, regstack[9]);
+
+		bcm43xx_radio_write16(dev, 0x0052,
+		                      (bcm43xx_radio_read16(dev, 0x0052) & 0x000F)
+				      | regstack[11]);
+
+		bcm43xx_write16(dev, 0x03EC, regstack[10]);
+	}
+	bcm43xx_phy_write(dev, 0x0015, regstack[0]);
+}
+
+static u16 lo_measure_feedthrough(struct bcm43xx_wldev *dev,
+				  u16 lna, u16 pga, u16 trsw_rx)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	u16 rfover;
+
+	if (phy->gmode) {
+		lna <<= BCM43xx_PHY_RFOVERVAL_LNA_SHIFT;
+		pga <<= BCM43xx_PHY_RFOVERVAL_PGA_SHIFT;
+
+		assert((lna & ~BCM43xx_PHY_RFOVERVAL_LNA) == 0);
+		assert((pga & ~BCM43xx_PHY_RFOVERVAL_PGA) == 0);
+/*FIXME This assertion fails		assert((trsw_rx & ~(BCM43xx_PHY_RFOVERVAL_TRSWRX |
+				    BCM43xx_PHY_RFOVERVAL_BW)) == 0);
+*/
+trsw_rx &= (BCM43xx_PHY_RFOVERVAL_TRSWRX | BCM43xx_PHY_RFOVERVAL_BW);
+
+		/* Construct the RF Override Value */
+		rfover = BCM43xx_PHY_RFOVERVAL_UNK;
+		rfover |= pga;
+		rfover |= lna;
+		rfover |= trsw_rx;
+		if ((dev->dev->bus->sprom.r1.boardflags_lo & BCM43xx_BFL_EXTLNA) &&
+		    phy->rev > 6)
+			rfover |= BCM43xx_PHY_RFOVERVAL_EXTLNA;
+
+		bcm43xx_phy_write(dev, BCM43xx_PHY_PGACTL, 0xE300);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_RFOVERVAL, rfover);
+		udelay(10);
+		rfover |= BCM43xx_PHY_RFOVERVAL_BW_LBW;
+		bcm43xx_phy_write(dev, BCM43xx_PHY_RFOVERVAL, rfover);
+		udelay(10);
+		rfover |= BCM43xx_PHY_RFOVERVAL_BW_LPF;
+		bcm43xx_phy_write(dev, BCM43xx_PHY_RFOVERVAL, rfover);
+		udelay(10);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_PGACTL, 0xF300);
+	} else {
+		pga |= BCM43xx_PHY_PGACTL_UNKNOWN;
+		bcm43xx_phy_write(dev, BCM43xx_PHY_PGACTL, pga);
+		udelay(10);
+		pga |= BCM43xx_PHY_PGACTL_LOWBANDW;
+		bcm43xx_phy_write(dev, BCM43xx_PHY_PGACTL, pga);
+		udelay(10);
+		pga |= BCM43xx_PHY_PGACTL_LPF;
+		bcm43xx_phy_write(dev, BCM43xx_PHY_PGACTL, pga);
+	}
+	udelay(21);
+
+	return bcm43xx_phy_read(dev, BCM43xx_PHY_LO_LEAKAGE);
+}
+
+/* TXCTL Register and Value Table.
+ * Returns the "TXCTL Register".
+ * "value" is the "TXCTL Value".
+ * "pad_mix_gain" is the PAD Mixer Gain.
+ */
+static u16 lo_txctl_register_table(struct bcm43xx_wldev *dev,
+				   u16 *value, u16 *pad_mix_gain)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	u16 reg, v, padmix;
+
+	if (phy->type == BCM43xx_PHYTYPE_B) {
+		v = 0x30;
+		if (phy->radio_rev <= 5) {
+			reg = 0x43;
+			padmix = 0;
+		} else {
+			reg = 0x52;
+			padmix = 5;
+		}
+	} else {
+		if (phy->rev >= 2 && phy->radio_rev == 8) {
+			reg = 0x43;
+			v = 0x10;
+			padmix = 2;
+		} else {
+			reg = 0x52;
+			v = 0x30;
+			padmix = 5;
+		}
+	}
+	if (value)
+		*value = v;
+	if (pad_mix_gain)
+		*pad_mix_gain = padmix;
+
+	return reg;
+}
+
+static void lo_measure_txctl_values(struct bcm43xx_wldev *dev)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
+	u16 reg, mask;
+	u16 trsw_rx, pga;
+	u16 radio_pctl_reg;
+
+	static const u8 tx_bias_values[] = {
+		0x09, 0x08, 0x0A, 0x01, 0x00,
+		0x02, 0x05, 0x04, 0x06,
+	};
+	static const u8 tx_magn_values[] = {
+		0x70, 0x40,
+	};
+
+	if (!has_loopback_gain(phy)) {
+		radio_pctl_reg = 6;
+		trsw_rx = 2;
+		pga = 0;
+	} else {
+		int lb_gain; /* Loopback gain (in dB) */
+
+		trsw_rx = 0;
+		lb_gain = phy->max_lb_gain / 2;
+		if (lb_gain > 10) {
+			radio_pctl_reg = 0;
+			pga = abs(10 - lb_gain) / 6;
+			pga = limit_value(pga, 0, 15);
+		} else {
+			int cmp_val;
+			int tmp;
+
+			pga = 0;
+			cmp_val = 0x24;
+			if ((phy->rev >= 2) &&
+			    (phy->radio_ver == 0x2050) &&
+			    (phy->radio_rev == 8))
+				cmp_val = 0x3C;
+			tmp = lb_gain;
+			if ((10 - lb_gain) < cmp_val)
+				tmp = (10 - lb_gain);
+			if (tmp < 0)
+				tmp += 6;
+			else
+				tmp += 3;
+			cmp_val /= 4;
+			tmp /= 4;
+			if (tmp >= cmp_val)
+				radio_pctl_reg = cmp_val;
+			else
+				radio_pctl_reg = tmp;
+		}
+	}
+	bcm43xx_radio_write16(dev, 0x43,
+			      (bcm43xx_radio_read16(dev, 0x43)
+			       & 0xFFF0) | radio_pctl_reg);
+	bcm43xx_phy_set_baseband_attenuation(dev, 2);
+
+	reg = lo_txctl_register_table(dev, &mask, NULL);
+	mask = ~mask;
+	bcm43xx_radio_write16(dev, reg,
+			      bcm43xx_radio_read16(dev, reg)
+			      & mask);
+
+	if (has_tx_magnification(phy)) {
+		int i, j;
+		int feedthrough;
+		int min_feedth = 0xFFFF;
+		u8 tx_magn, tx_bias;
+
+		for (i = 0; i < ARRAY_SIZE(tx_magn_values); i++) {
+			tx_magn = tx_magn_values[i];
+			bcm43xx_radio_write16(dev, 0x52,
+					      (bcm43xx_radio_read16(dev, 0x52)
+					       & 0xFF0F) | tx_magn);
+			for (j = 0; j < ARRAY_SIZE(tx_bias_values); j++) {
+				tx_bias = tx_bias_values[j];
+				bcm43xx_radio_write16(dev, 0x52,
+						      (bcm43xx_radio_read16(dev, 0x52)
+						       & 0xFFF0) | tx_bias);
+				feedthrough = lo_measure_feedthrough(dev, 0, pga, trsw_rx);
+				if (feedthrough < min_feedth) {
+					lo->tx_bias = tx_bias;
+					lo->tx_magn = tx_magn;
+					min_feedth = feedthrough;
+				}
+				if (lo->tx_bias == 0)
+					break;
+			}
+			bcm43xx_radio_write16(dev, 0x52,
+					      (bcm43xx_radio_read16(dev, 0x52)
+					       & 0xFF00) | lo->tx_bias | lo->tx_magn);
+		}
+	} else {
+		lo->tx_magn = 0; /* FIXME */
+		lo->tx_bias = 0;
+		bcm43xx_radio_write16(dev, 0x52,
+				      bcm43xx_radio_read16(dev, 0x52)
+				      & 0xFFF0); /* TX bias == 0 */
+	}
+}
+
+static void lo_read_power_vector(struct bcm43xx_wldev *dev)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
+	u16 i;
+	u64 tmp;
+	u64 power_vector = 0;
+	int rf_offset, bb_offset;
+	struct bcm43xx_loctl *loctl;
+
+	for (i = 0; i < 8; i += 2) {
+		tmp = bcm43xx_shm_read16(dev, BCM43xx_SHM_SHARED,
+					 0x310 + i);
+		/* Clear the top byte. We get holes in the bitmap... */
+		tmp &= 0xFF;
+		power_vector |= (tmp << (i * 8));
+		/* Clear the vector on the device. */
+		bcm43xx_shm_write16(dev, BCM43xx_SHM_SHARED,
+				    0x310 + i, 0);
+	}
+
+	if (power_vector)
+		lo->power_vector = power_vector;
+	power_vector = lo->power_vector;
+
+	for (i = 0; i < 64; i++) {
+		if (power_vector & ((u64)1ULL << i)) {
+			/* Now figure out which bcm43xx_loctl corresponds
+			 * to this bit.
+			 */
+			rf_offset = i / lo->rfatt_list.len;
+			bb_offset = i % lo->rfatt_list.len;//FIXME?
+			loctl = bcm43xx_get_lo_g_ctl(dev, &lo->rfatt_list.list[rf_offset],
+						  &lo->bbatt_list.list[bb_offset]);
+			/* And mark it as "used", as the device told us
+			 * through the bitmap it is using it.
+			 */
+			loctl->used = 1;
+		}
+	}
+}
+
+/* 802.11/LO/GPHY/MeasuringGains */
+static void lo_measure_gain_values(struct bcm43xx_wldev *dev,
+				   s16 max_rx_gain,
+				   int use_trsw_rx)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	u16 tmp;
+
+	if (max_rx_gain < 0)
+		max_rx_gain = 0;
+
+	if (has_loopback_gain(phy)) {
+		int trsw_rx = 0;
+		int trsw_rx_gain;
+
+		if (use_trsw_rx) {
+			trsw_rx_gain = phy->trsw_rx_gain / 2;
+			if (max_rx_gain >= trsw_rx_gain) {
+				trsw_rx_gain = max_rx_gain - trsw_rx_gain;
+				trsw_rx = 0x20;
+			}
+		} else
+			trsw_rx_gain = max_rx_gain;
+		if (trsw_rx_gain < 9) {
+			phy->lna_lod_gain = 0;
+		} else {
+			phy->lna_lod_gain = 1;
+			trsw_rx_gain -= 8;
+		}
+		trsw_rx_gain = limit_value(trsw_rx_gain, 0, 0x2D);
+		phy->pga_gain = trsw_rx_gain / 3;
+		if (phy->pga_gain >= 5) {
+			phy->pga_gain -= 5;
+			phy->lna_gain = 2;
+		} else
+			phy->lna_gain = 0;
+	} else {
+		phy->lna_gain = 0;
+		phy->trsw_rx_gain = 0x20;
+		if (max_rx_gain >= 0x14) {
+			phy->lna_lod_gain = 1;
+			phy->pga_gain = 2;
+		} else if (max_rx_gain >= 0x12) {
+			phy->lna_lod_gain = 1;
+			phy->pga_gain = 1;
+		} else if (max_rx_gain >= 0xF) {
+			phy->lna_lod_gain = 1;
+			phy->pga_gain = 0;
+		} else {
+			phy->lna_lod_gain = 0;
+			phy->pga_gain = 0;
+		}
+	}
+
+	tmp = bcm43xx_radio_read16(dev, 0x7A);
+	if (phy->lna_lod_gain == 0)
+		tmp &= ~0x0008;
+	else
+		tmp |= 0x0008;
+	bcm43xx_radio_write16(dev, 0x7A, tmp);
+}
+
+struct lo_g_saved_values {
+	u8 old_channel;
+
+	/* Core registers */
+	u16 reg_3F4;
+	u16 reg_3E2;
+
+	/* PHY registers */
+	u16 phy_lo_mask;
+	u16 phy_extg_01;
+	u16 phy_dacctl_hwpctl;
+	u16 phy_dacctl;
+	u16 phy_base_14;
+	u16 phy_hpwr_tssictl;
+	u16 phy_analogover;
+	u16 phy_analogoverval;
+	u16 phy_rfover;
+	u16 phy_rfoverval;
+	u16 phy_classctl;
+	u16 phy_base_3E;
+	u16 phy_crs0;
+	u16 phy_pgactl;
+	u16 phy_base_2A;
+	u16 phy_syncctl;
+	u16 phy_base_30;
+	u16 phy_base_06;
+
+	/* Radio registers */
+	u16 radio_43;
+	u16 radio_7A;
+	u16 radio_52;
+};
+
+static void lo_measure_setup(struct bcm43xx_wldev *dev,
+			     struct lo_g_saved_values *sav)
+{
+	struct ssb_sprom *sprom = &dev->dev->bus->sprom;
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
+	u16 tmp;
+
+	if (has_hardware_pctl(phy)) {
+		sav->phy_lo_mask = bcm43xx_phy_read(dev, BCM43xx_PHY_LO_MASK);
+		sav->phy_extg_01 = bcm43xx_phy_read(dev, BCM43xx_PHY_EXTG(0x01));
+		sav->phy_dacctl_hwpctl = bcm43xx_phy_read(dev, BCM43xx_PHY_DACCTL);
+		sav->phy_base_14 = bcm43xx_phy_read(dev, BCM43xx_PHY_BASE(0x14));
+		sav->phy_hpwr_tssictl = bcm43xx_phy_read(dev, BCM43xx_PHY_HPWR_TSSICTL);
+
+		bcm43xx_phy_write(dev, BCM43xx_PHY_HPWR_TSSICTL,
+				  bcm43xx_phy_read(dev, BCM43xx_PHY_HPWR_TSSICTL)
+				  | 0x100);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_EXTG(0x01),
+				  bcm43xx_phy_read(dev, BCM43xx_PHY_EXTG(0x01))
+				  | 0x40);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_DACCTL,
+				  bcm43xx_phy_read(dev, BCM43xx_PHY_DACCTL)
+				  | 0x40);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x14),
+				  bcm43xx_phy_read(dev, BCM43xx_PHY_BASE(0x14))
+				  | 0x200);
+	}
+	if (phy->type == BCM43xx_PHYTYPE_B &&
+	    phy->radio_ver == 0x2050 &&
+	    phy->radio_rev < 6) {
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x16), 0x410);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x17), 0x820);
+	}
+	if (!lo->rebuild && has_hardware_pctl(phy))
+		lo_read_power_vector(dev);
+	if (phy->rev >= 2) {
+		sav->phy_analogover = bcm43xx_phy_read(dev, BCM43xx_PHY_ANALOGOVER);
+		sav->phy_analogoverval = bcm43xx_phy_read(dev, BCM43xx_PHY_ANALOGOVERVAL);
+		sav->phy_rfover = bcm43xx_phy_read(dev, BCM43xx_PHY_RFOVER);
+		sav->phy_rfoverval = bcm43xx_phy_read(dev, BCM43xx_PHY_RFOVERVAL);
+		sav->phy_classctl = bcm43xx_phy_read(dev, BCM43xx_PHY_CLASSCTL);
+		sav->phy_base_3E = bcm43xx_phy_read(dev, BCM43xx_PHY_BASE(0x3E));
+		sav->phy_crs0 = bcm43xx_phy_read(dev, BCM43xx_PHY_CRS0);
+
+		bcm43xx_phy_write(dev, BCM43xx_PHY_CLASSCTL,
+				  bcm43xx_phy_read(dev, BCM43xx_PHY_CLASSCTL)
+				  & 0xFFFC);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_CRS0,
+				  bcm43xx_phy_read(dev, BCM43xx_PHY_CRS0)
+				  & 0x7FFF);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_ANALOGOVER,
+				  bcm43xx_phy_read(dev, BCM43xx_PHY_ANALOGOVER)
+				  | 0x0003);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_ANALOGOVERVAL,
+				  bcm43xx_phy_read(dev, BCM43xx_PHY_ANALOGOVERVAL)
+				  & 0xFFFC);
+		if (phy->type == BCM43xx_PHYTYPE_G) {
+			if ((phy->rev >= 7) &&
+			    (sprom->r1.boardflags_lo & BCM43xx_BFL_EXTLNA)) {
+				bcm43xx_phy_write(dev, BCM43xx_PHY_RFOVER, 0x933);
+			} else {
+				bcm43xx_phy_write(dev, BCM43xx_PHY_RFOVER, 0x133);
+			}
+		} else {
+			bcm43xx_phy_write(dev, BCM43xx_PHY_RFOVER, 0);
+		}
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x3E), 0);
+	}
+	sav->reg_3F4 = bcm43xx_read16(dev, 0x3F4);
+	sav->reg_3E2 = bcm43xx_read16(dev, 0x3E2);
+	sav->radio_43 = bcm43xx_radio_read16(dev, 0x43);
+	sav->radio_7A = bcm43xx_radio_read16(dev, 0x7A);
+	sav->phy_pgactl = bcm43xx_phy_read(dev, BCM43xx_PHY_PGACTL);
+	sav->phy_base_2A = bcm43xx_phy_read(dev, BCM43xx_PHY_BASE(0x2A));
+	sav->phy_syncctl = bcm43xx_phy_read(dev, BCM43xx_PHY_SYNCCTL);
+	sav->phy_dacctl = bcm43xx_phy_read(dev, BCM43xx_PHY_DACCTL);
+
+	if (!has_tx_magnification(phy)) {
+		sav->radio_52 = bcm43xx_radio_read16(dev, 0x52);
+		sav->radio_52 &= 0x00F0;
+	}
+	if (phy->type == BCM43xx_PHYTYPE_B) {
+		sav->phy_base_30 = bcm43xx_phy_read(dev, BCM43xx_PHY_BASE(0x30));
+		sav->phy_base_06 = bcm43xx_phy_read(dev, BCM43xx_PHY_BASE(0x06));
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x30), 0x00FF);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x06), 0x3F3F);
+	} else {
+		bcm43xx_write16(dev, 0x3E2,
+				bcm43xx_read16(dev, 0x3E2)
+				| 0x8000);
+	}
+	bcm43xx_write16(dev, 0x3F4,
+			bcm43xx_read16(dev, 0x3F4)
+			& 0xF000);
+
+	tmp = (phy->type == BCM43xx_PHYTYPE_G) ? BCM43xx_PHY_LO_MASK : BCM43xx_PHY_BASE(0x2E);
+	bcm43xx_phy_write(dev, tmp, 0x007F);
+
+	tmp = sav->phy_syncctl;
+	bcm43xx_phy_write(dev, BCM43xx_PHY_SYNCCTL, tmp & 0xFF7F);
+	tmp = sav->radio_7A;
+	bcm43xx_radio_write16(dev, 0x007A, tmp & 0xFFF0);
+
+	bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x2A), 0x8A3);
+	if (phy->type == BCM43xx_PHYTYPE_G ||
+	    (phy->type == BCM43xx_PHYTYPE_B &&
+	     phy->radio_ver == 0x2050 &&
+	     phy->radio_rev >= 6)) {
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x2B), 0x1003);
+	} else
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x2B), 0x0802);
+	if (phy->rev >= 2)
+		bcm43xx_dummy_transmission(dev);
+	bcm43xx_radio_selectchannel(dev, 6, 0);
+	bcm43xx_radio_read16(dev, 0x51); /* dummy read */
+	if (phy->type == BCM43xx_PHYTYPE_G)
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x2F), 0);
+	if (lo->rebuild)
+		lo_measure_txctl_values(dev);
+	if (phy->type == BCM43xx_PHYTYPE_G && phy->rev >= 3) {
+		bcm43xx_phy_write(dev, BCM43xx_PHY_LO_MASK, 0xC078);
+	} else {
+		if (phy->type == BCM43xx_PHYTYPE_B)
+			bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x2E), 0x8078);
+		else
+			bcm43xx_phy_write(dev, BCM43xx_PHY_LO_MASK, 0x8078);
+	}
+}
+
+static void lo_measure_restore(struct bcm43xx_wldev *dev,
+			       struct lo_g_saved_values *sav)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
+	u16 tmp;
+
+	if (phy->rev >= 2) {
+		bcm43xx_phy_write(dev, BCM43xx_PHY_PGACTL, 0xE300);
+		tmp = (phy->pga_gain << 8);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_RFOVERVAL, tmp | 0xA0);
+		udelay(5);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_RFOVERVAL, tmp | 0xA2);
+		udelay(2);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_RFOVERVAL, tmp | 0xA3);
+	} else {
+		tmp = (phy->pga_gain | 0xEFA0);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_PGACTL, tmp);
+	}
+	if (has_hardware_pctl(phy)) {
+		bcm43xx_gphy_dc_lt_init(dev);
+	} else {
+		if (lo->rebuild)
+			bcm43xx_lo_g_adjust_to(dev, 3, 2, 0);
+		else
+			bcm43xx_lo_g_adjust(dev);
+	}
+	if (phy->type == BCM43xx_PHYTYPE_G) {
+		if (phy->rev >= 3)
+			bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x2E), 0xC078);
+		else
+			bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x2E), 0x8078);
+		if (phy->rev >= 2)
+			bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x2F), 0x0202);
+		else
+			bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x2F), 0x0101);
+	}
+	bcm43xx_write16(dev, 0x3F4, sav->reg_3F4);
+	bcm43xx_phy_write(dev, BCM43xx_PHY_PGACTL, sav->phy_pgactl);
+	bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x2A), sav->phy_base_2A);
+	bcm43xx_phy_write(dev, BCM43xx_PHY_SYNCCTL, sav->phy_syncctl);
+	bcm43xx_phy_write(dev, BCM43xx_PHY_DACCTL, sav->phy_dacctl);
+	bcm43xx_radio_write16(dev, 0x43, sav->radio_43);
+	bcm43xx_radio_write16(dev, 0x7A, sav->radio_7A);
+	if (!has_tx_magnification(phy)) {
+		tmp = sav->radio_52;
+		bcm43xx_radio_write16(dev, 0x52,
+				      (bcm43xx_radio_read16(dev, 0x52)
+				       & 0xFF0F) | tmp);
+	}
+	bcm43xx_write16(dev, 0x3E2, sav->reg_3E2);
+	if (phy->type == BCM43xx_PHYTYPE_B &&
+	    phy->radio_ver == 0x2050 &&
+	    phy->radio_rev <= 5) {
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x30), sav->phy_base_30);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x06), sav->phy_base_06);
+	}
+	if (phy->rev >= 2) {
+		bcm43xx_phy_write(dev, BCM43xx_PHY_ANALOGOVER, sav->phy_analogover);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_ANALOGOVERVAL, sav->phy_analogoverval);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_CLASSCTL, sav->phy_classctl);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_RFOVER, sav->phy_rfover);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_RFOVERVAL, sav->phy_rfoverval);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x3E), sav->phy_base_3E);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_CRS0, sav->phy_crs0);
+	}
+	if (has_hardware_pctl(phy)) {
+		tmp = (sav->phy_lo_mask & 0xBFFF);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_LO_MASK, tmp);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_EXTG(0x01), sav->phy_extg_01);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_DACCTL, sav->phy_dacctl_hwpctl);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_BASE(0x14), sav->phy_base_14);
+		bcm43xx_phy_write(dev, BCM43xx_PHY_HPWR_TSSICTL, sav->phy_hpwr_tssictl);
+	}
+	bcm43xx_radio_selectchannel(dev, sav->old_channel, 1);
+}
+
+struct bcm43xx_lo_g_statemachine {
+	int current_state;
+	int nr_measured;
+	int state_val_multiplier;
+	u16 lowest_feedth;
+	struct bcm43xx_loctl min_loctl;
+};
+
+/* Loop over each possible value in this state. */
+static int lo_probe_possible_loctls(struct bcm43xx_wldev *dev,
+				    struct bcm43xx_loctl *probe_loctl,
+				    struct bcm43xx_lo_g_statemachine *d)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
+	struct bcm43xx_loctl test_loctl;
+	struct bcm43xx_loctl orig_loctl;
+	struct bcm43xx_loctl prev_loctl = {
+		.i = -100,
+		.q = -100,
+	};
+	int i;
+	int begin, end;
+	int found_lower = 0;
+	u16 feedth;
+
+	static const struct bcm43xx_loctl modifiers[] = {
+		{ .i =  1,  .q =  1, },
+		{ .i =  1,  .q =  0, },
+		{ .i =  1,  .q = -1, },
+		{ .i =  0,  .q = -1, },
+		{ .i = -1,  .q = -1, },
+		{ .i = -1,  .q =  0, },
+		{ .i = -1,  .q =  1, },
+		{ .i =  0,  .q =  1, },
+	};
+
+	if (d->current_state == 0) {
+		begin = 1;
+		end = 8;
+	} else if (d->current_state % 2 == 0) {
+		begin = d->current_state - 1;
+		end = d->current_state + 1;
+	} else {
+		begin = d->current_state - 2;
+		end = d->current_state + 2;
+	}
+	if (begin < 1)
+		begin += 8;
+	if (end > 8)
+		end -= 8;
+
+	memcpy(&orig_loctl, probe_loctl, sizeof(struct bcm43xx_loctl));
+	i = begin;
+	d->current_state = i;
+	while (1) {
+		assert(i >= 1 && i <= 8);
+		memcpy(&test_loctl, &orig_loctl, sizeof(struct bcm43xx_loctl));
+		test_loctl.i += modifiers[i - 1].i * d->state_val_multiplier;
+		test_loctl.q += modifiers[i - 1].q * d->state_val_multiplier;
+		if ((test_loctl.i != prev_loctl.i ||
+		     test_loctl.q != prev_loctl.q) &&
+		    (abs(test_loctl.i) <= 16 &&
+		     abs(test_loctl.q) <= 16)) {
+			bcm43xx_lo_write(dev, &test_loctl);
+			feedth = lo_measure_feedthrough(dev, phy->lna_gain,
+							phy->pga_gain,
+							phy->trsw_rx_gain);
+			if (feedth < d->lowest_feedth) {
+				memcpy(probe_loctl, &test_loctl, sizeof(struct bcm43xx_loctl));
+				found_lower = 1;
+				d->lowest_feedth = feedth;
+				if ((d->nr_measured < 2) &&
+				    (!has_loopback_gain(phy) || lo->rebuild))
+					break;
+			}
+		}
+		memcpy(&prev_loctl, &test_loctl, sizeof(prev_loctl));
+		if (i == end)
+			break;
+		if (i == 8)
+			i = 1;
+		else
+			i++;
+		d->current_state = i;
+	}
+
+	return found_lower;
+}
+
+static void lo_probe_loctls_statemachine(struct bcm43xx_wldev *dev,
+					 struct bcm43xx_loctl *loctl,
+					 int *max_rx_gain)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
+	struct bcm43xx_lo_g_statemachine d;
+	u16 feedth;
+	int found_lower;
+	struct bcm43xx_loctl probe_loctl;
+	int max_repeat = 1, repeat_cnt = 0;
+
+	d.nr_measured = 0;
+	d.state_val_multiplier = 1;
+	if (has_loopback_gain(phy) && !lo->rebuild)
+		d.state_val_multiplier = 3;
+
+	memcpy(&d.min_loctl, loctl, sizeof(struct bcm43xx_loctl));
+	if (has_loopback_gain(phy) && lo->rebuild)
+		max_repeat = 4;
+	do {
+		bcm43xx_lo_write(dev, &d.min_loctl);
+		feedth = lo_measure_feedthrough(dev, phy->lna_gain,
+						phy->pga_gain,
+						phy->trsw_rx_gain);
+		if (!lo->rebuild && feedth < 0x258) {
+			if (feedth >= 0x12C)
+				*max_rx_gain += 6;
+			else
+				*max_rx_gain += 3;
+			feedth = lo_measure_feedthrough(dev, phy->lna_gain,
+							phy->pga_gain,
+							phy->trsw_rx_gain);
+		}
+		d.lowest_feedth = feedth;
+
+		d.current_state = 0;
+		do {
+			assert(d.current_state >= 0 && d.current_state <= 8);
+			memcpy(&probe_loctl, &d.min_loctl, sizeof(struct bcm43xx_loctl));
+			found_lower = lo_probe_possible_loctls(dev, &probe_loctl, &d);
+			if (!found_lower)
+				break;
+			if ((probe_loctl.i == d.min_loctl.i) &&
+			    (probe_loctl.q == d.min_loctl.q))
+				break;
+			memcpy(&d.min_loctl, &probe_loctl, sizeof(struct bcm43xx_loctl));
+			d.nr_measured++;
+		} while (d.nr_measured < 24);
+		memcpy(loctl, &d.min_loctl, sizeof(struct bcm43xx_loctl));
+
+		if (has_loopback_gain(phy)) {
+			if (d.lowest_feedth > 0x1194)
+				*max_rx_gain -= 6;
+			else if (d.lowest_feedth < 0x5DC)
+				*max_rx_gain += 3;
+			if (repeat_cnt == 0) {
+				if (d.lowest_feedth <= 0x5DC) {
+					d.state_val_multiplier = 1;
+					repeat_cnt++;
+				} else
+					d.state_val_multiplier = 2;
+			} else if (repeat_cnt == 2)
+				d.state_val_multiplier = 1;
+		}
+		lo_measure_gain_values(dev, *max_rx_gain, has_loopback_gain(phy));
+	} while (++repeat_cnt < max_repeat);
+}
+
+static void lo_measure(struct bcm43xx_wldev *dev)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
+	struct bcm43xx_loctl loctl = {
+		.i	= 0,
+		.q	= 0,
+	};
+	struct bcm43xx_loctl *ploctl;
+	int max_rx_gain;
+	int rfidx, bbidx;
+
+	/* Values from the "TXCTL Register and Value Table" */
+	u16 txctl_reg;
+	u16 txctl_value;
+	u16 pad_mix_gain;
+
+	txctl_reg = lo_txctl_register_table(dev, &txctl_value, &pad_mix_gain);
+
+	for (rfidx = 0; rfidx < lo->rfatt_list.len; rfidx++) {
+
+		bcm43xx_radio_write16(dev, 0x43,
+				      (bcm43xx_radio_read16(dev, 0x43)
+				       & 0xFFF0) | lo->rfatt_list.list[rfidx].att);
+		bcm43xx_radio_write16(dev, txctl_reg,
+				      (bcm43xx_radio_read16(dev, txctl_reg)
+				       & ~txctl_value)
+				      | (lo->rfatt_list.list[rfidx].with_padmix ? txctl_value : 0));
+
+		for (bbidx = 0; bbidx < lo->bbatt_list.len; bbidx++) {
+			if (lo->rebuild) {
+				ploctl = bcm43xx_get_lo_g_ctl_nopadmix(dev,
+							&lo->rfatt_list.list[rfidx],
+							&lo->bbatt_list.list[bbidx]);
+			} else {
+				ploctl = bcm43xx_get_lo_g_ctl(dev, &lo->rfatt_list.list[rfidx],
+							   &lo->bbatt_list.list[bbidx]);
+				if (!ploctl->used)
+					continue;
+			}
+			memcpy(&loctl, ploctl, sizeof(loctl));
+
+			max_rx_gain = lo->rfatt_list.list[rfidx].att * 2;
+			max_rx_gain += lo->bbatt_list.list[bbidx].att / 2;
+			if (lo->rfatt_list.list[rfidx].with_padmix)
+				max_rx_gain -= pad_mix_gain;
+			if (has_loopback_gain(phy))
+				max_rx_gain += phy->max_lb_gain;
+			lo_measure_gain_values(dev, max_rx_gain, has_loopback_gain(phy));
+
+			bcm43xx_phy_set_baseband_attenuation(dev, lo->bbatt_list.list[bbidx].att);
+			lo_probe_loctls_statemachine(dev, &loctl, &max_rx_gain);
+			if (phy->type == BCM43xx_PHYTYPE_B) {
+				loctl.i++;
+				loctl.q++;
+			}
+			memcpy(ploctl, &loctl, sizeof(loctl));
+		}
+	}
+}
+
+#if BCM43xx_DEBUG
+static int do_validate_loctl(struct bcm43xx_wldev *dev,
+			     struct bcm43xx_loctl *control)
+{
+	const int is_initializing = (bcm43xx_status(dev) == BCM43xx_STAT_INITIALIZING);
+
+	if (unlikely(abs(control->i) > 16 ||
+		     abs(control->q) > 16 ||
+		     (is_initializing && control->used))) {
+		printk(KERN_ERR PFX "ERROR: LO control pair validation failed "
+				    "(first: %d, second: %d, used %u)\n",
+		       control->i, control->q, control->used);
+	}
+	return 0;
+}
+static void validate_all_loctls(struct bcm43xx_wldev *dev)
+{
+	bcm43xx_call_for_each_loctl(dev, do_validate_loctl);
+}
+#else /* BCM43xx_DEBUG */
+static inline void validate_all_loctls(struct bcm43xx_wldev *dev) { }
+#endif /* BCM43xx_DEBUG */
+
+void bcm43xx_lo_g_measure(struct bcm43xx_wldev *dev)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct lo_g_saved_values sav;
+
+	assert(phy->type == BCM43xx_PHYTYPE_B ||
+	       phy->type == BCM43xx_PHYTYPE_G);
+
+	sav.old_channel = phy->channel;
+	lo_measure_setup(dev, &sav);
+	lo_measure(dev);
+	lo_measure_restore(dev, &sav);
+
+	validate_all_loctls(dev);
+
+	phy->lo_control->lo_measured = 1;
+	phy->lo_control->rebuild = 0;
+}
+
+void bcm43xx_lo_g_adjust(struct bcm43xx_wldev *dev)
+{
+	bcm43xx_lo_write(dev, bcm43xx_lo_g_ctl_current(dev));
+}
+
+static inline void fixup_rfatt_for_txctl1(struct bcm43xx_rfatt *rf,
+					  u16 txctl1)
+{
+	if ((rf->att < 5) && (txctl1 & 0x0001))
+		rf->att = 4;
+}
+
+void bcm43xx_lo_g_adjust_to(struct bcm43xx_wldev *dev,
+			  u16 rfatt, u16 bbatt, u16 txctl1)
+{
+	struct bcm43xx_rfatt rf;
+	struct bcm43xx_bbatt bb;
+	struct bcm43xx_loctl *loctl;
+
+	memset(&rf, 0, sizeof(rf));
+	memset(&bb, 0, sizeof(bb));
+	rf.att = rfatt;
+	bb.att = bbatt;
+	fixup_rfatt_for_txctl1(&rf, txctl1);
+	loctl = bcm43xx_get_lo_g_ctl(dev, &rf, &bb);
+	bcm43xx_lo_write(dev, loctl);
+}
+
+struct bcm43xx_loctl * bcm43xx_lo_g_ctl_current(struct bcm43xx_wldev *dev)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
+	struct bcm43xx_rfatt rf;
+
+	memcpy(&rf, &lo->rfatt, sizeof(rf));
+	fixup_rfatt_for_txctl1(&rf, phy->txctl1);
+
+	return bcm43xx_get_lo_g_ctl(dev, &rf, &lo->bbatt);
+}
+
+static int do_mark_unused(struct bcm43xx_wldev *dev,
+			  struct bcm43xx_loctl *control)
+{
+	control->used = 0;
+	return 0;
+}
+
+void bcm43xx_lo_g_ctl_mark_all_unused(struct bcm43xx_wldev *dev)
+{
+	struct bcm43xx_phy *phy = &dev->phy;
+	struct bcm43xx_txpower_lo_control *lo = phy->lo_control;
+
+	bcm43xx_call_for_each_loctl(dev, do_mark_unused);
+	lo->rebuild = 1;
+}
+
+void bcm43xx_lo_g_ctl_mark_cur_used(struct bcm43xx_wldev *dev)
+{
+	bcm43xx_lo_g_ctl_current(dev)->used = 1;
+}
-- 
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