Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 1016 insertions, 0 deletions

diff --git a/kernel/drivers/net/wireless/b43/lo.c b/kernel/drivers/net/wireless/b43/lo.c
new file mode 100644
index 000000000..916123a3d
--- /dev/null
+++ b/kernel/drivers/net/wireless/b43/lo.c
@@ -0,0 +1,1016 @@
+/*
+
+  Broadcom B43 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 <stefano.brivio@polimi.it>
+  Copyright (c) 2005-2007 Michael Buesch <m@bues.ch>
+  Copyright (c) 2005, 2006 Danny van Dyk <kugelfang@gentoo.org>
+  Copyright (c) 2005, 2006 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+
+  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 "lo.h"
+#include "phy_g.h"
+#include "main.h"
+
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+
+
+static struct b43_lo_calib *b43_find_lo_calib(struct b43_txpower_lo_control *lo,
+					      const struct b43_bbatt *bbatt,
+					       const struct b43_rfatt *rfatt)
+{
+	struct b43_lo_calib *c;
+
+	list_for_each_entry(c, &lo->calib_list, list) {
+		if (!b43_compare_bbatt(&c->bbatt, bbatt))
+			continue;
+		if (!b43_compare_rfatt(&c->rfatt, rfatt))
+			continue;
+		return c;
+	}
+
+	return NULL;
+}
+
+/* Write the LocalOscillator Control (adjust) value-pair. */
+static void b43_lo_write(struct b43_wldev *dev, struct b43_loctl *control)
+{
+	struct b43_phy *phy = &dev->phy;
+	u16 value;
+
+	if (B43_DEBUG) {
+		if (unlikely(abs(control->i) > 16 || abs(control->q) > 16)) {
+			b43dbg(dev->wl, "Invalid LO control pair "
+			       "(I: %d, Q: %d)\n", control->i, control->q);
+			dump_stack();
+			return;
+		}
+	}
+	B43_WARN_ON(phy->type != B43_PHYTYPE_G);
+
+	value = (u8) (control->q);
+	value |= ((u8) (control->i)) << 8;
+	b43_phy_write(dev, B43_PHY_LO_CTL, value);
+}
+
+static u16 lo_measure_feedthrough(struct b43_wldev *dev,
+				  u16 lna, u16 pga, u16 trsw_rx)
+{
+	struct b43_phy *phy = &dev->phy;
+	u16 rfover;
+	u16 feedthrough;
+
+	if (phy->gmode) {
+		lna <<= B43_PHY_RFOVERVAL_LNA_SHIFT;
+		pga <<= B43_PHY_RFOVERVAL_PGA_SHIFT;
+
+		B43_WARN_ON(lna & ~B43_PHY_RFOVERVAL_LNA);
+		B43_WARN_ON(pga & ~B43_PHY_RFOVERVAL_PGA);
+/*FIXME This assertion fails		B43_WARN_ON(trsw_rx & ~(B43_PHY_RFOVERVAL_TRSWRX |
+				    B43_PHY_RFOVERVAL_BW));
+*/
+		trsw_rx &= (B43_PHY_RFOVERVAL_TRSWRX | B43_PHY_RFOVERVAL_BW);
+
+		/* Construct the RF Override Value */
+		rfover = B43_PHY_RFOVERVAL_UNK;
+		rfover |= pga;
+		rfover |= lna;
+		rfover |= trsw_rx;
+		if ((dev->dev->bus_sprom->boardflags_lo & B43_BFL_EXTLNA)
+		    && phy->rev > 6)
+			rfover |= B43_PHY_RFOVERVAL_EXTLNA;
+
+		b43_phy_write(dev, B43_PHY_PGACTL, 0xE300);
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
+		udelay(10);
+		rfover |= B43_PHY_RFOVERVAL_BW_LBW;
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
+		udelay(10);
+		rfover |= B43_PHY_RFOVERVAL_BW_LPF;
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
+		udelay(10);
+		b43_phy_write(dev, B43_PHY_PGACTL, 0xF300);
+	} else {
+		pga |= B43_PHY_PGACTL_UNKNOWN;
+		b43_phy_write(dev, B43_PHY_PGACTL, pga);
+		udelay(10);
+		pga |= B43_PHY_PGACTL_LOWBANDW;
+		b43_phy_write(dev, B43_PHY_PGACTL, pga);
+		udelay(10);
+		pga |= B43_PHY_PGACTL_LPF;
+		b43_phy_write(dev, B43_PHY_PGACTL, pga);
+	}
+	udelay(21);
+	feedthrough = b43_phy_read(dev, B43_PHY_LO_LEAKAGE);
+
+	/* This is a good place to check if we need to relax a bit,
+	 * as this is the main function called regularly
+	 * in the LO calibration. */
+	cond_resched();
+
+	return feedthrough;
+}
+
+/* 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 b43_wldev *dev,
+				   u16 *value, u16 *pad_mix_gain)
+{
+	struct b43_phy *phy = &dev->phy;
+	u16 reg, v, padmix;
+
+	if (phy->type == B43_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 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 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 = gphy->max_lb_gain / 2;
+		if (lb_gain > 10) {
+			radio_pctl_reg = 0;
+			pga = abs(10 - lb_gain) / 6;
+			pga = clamp_val(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;
+		}
+	}
+	b43_radio_maskset(dev, 0x43, 0xFFF0, radio_pctl_reg);
+	b43_gphy_set_baseband_attenuation(dev, 2);
+
+	reg = lo_txctl_register_table(dev, &mask, NULL);
+	mask = ~mask;
+	b43_radio_mask(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];
+			b43_radio_maskset(dev, 0x52, 0xFF0F, tx_magn);
+			for (j = 0; j < ARRAY_SIZE(tx_bias_values); j++) {
+				tx_bias = tx_bias_values[j];
+				b43_radio_maskset(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;
+			}
+			b43_radio_write16(dev, 0x52,
+					  (b43_radio_read16(dev, 0x52)
+					   & 0xFF00) | lo->tx_bias | lo->
+					  tx_magn);
+		}
+	} else {
+		lo->tx_magn = 0;
+		lo->tx_bias = 0;
+		b43_radio_mask(dev, 0x52, 0xFFF0);	/* TX bias == 0 */
+	}
+	lo->txctl_measured_time = jiffies;
+}
+
+static void lo_read_power_vector(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;
+	int i;
+	u64 tmp;
+	u64 power_vector = 0;
+
+	for (i = 0; i < 8; i += 2) {
+		tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x310 + i);
+		power_vector |= (tmp << (i * 8));
+		/* Clear the vector on the device. */
+		b43_shm_write16(dev, B43_SHM_SHARED, 0x310 + i, 0);
+	}
+	if (power_vector)
+		lo->power_vector = power_vector;
+	lo->pwr_vec_read_time = jiffies;
+}
+
+/* 802.11/LO/GPHY/MeasuringGains */
+static void lo_measure_gain_values(struct b43_wldev *dev,
+				   s16 max_rx_gain, int use_trsw_rx)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_phy_g *gphy = phy->g;
+	u16 tmp;
+
+	if (max_rx_gain < 0)
+		max_rx_gain = 0;
+
+	if (has_loopback_gain(phy)) {
+		int trsw_rx_gain;
+
+		if (use_trsw_rx) {
+			trsw_rx_gain = gphy->trsw_rx_gain / 2;
+			if (max_rx_gain >= trsw_rx_gain) {
+				trsw_rx_gain = max_rx_gain - trsw_rx_gain;
+			}
+		} else
+			trsw_rx_gain = max_rx_gain;
+		if (trsw_rx_gain < 9) {
+			gphy->lna_lod_gain = 0;
+		} else {
+			gphy->lna_lod_gain = 1;
+			trsw_rx_gain -= 8;
+		}
+		trsw_rx_gain = clamp_val(trsw_rx_gain, 0, 0x2D);
+		gphy->pga_gain = trsw_rx_gain / 3;
+		if (gphy->pga_gain >= 5) {
+			gphy->pga_gain -= 5;
+			gphy->lna_gain = 2;
+		} else
+			gphy->lna_gain = 0;
+	} else {
+		gphy->lna_gain = 0;
+		gphy->trsw_rx_gain = 0x20;
+		if (max_rx_gain >= 0x14) {
+			gphy->lna_lod_gain = 1;
+			gphy->pga_gain = 2;
+		} else if (max_rx_gain >= 0x12) {
+			gphy->lna_lod_gain = 1;
+			gphy->pga_gain = 1;
+		} else if (max_rx_gain >= 0xF) {
+			gphy->lna_lod_gain = 1;
+			gphy->pga_gain = 0;
+		} else {
+			gphy->lna_lod_gain = 0;
+			gphy->pga_gain = 0;
+		}
+	}
+
+	tmp = b43_radio_read16(dev, 0x7A);
+	if (gphy->lna_lod_gain == 0)
+		tmp &= ~0x0008;
+	else
+		tmp |= 0x0008;
+	b43_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_cck_14;
+	u16 phy_hpwr_tssictl;
+	u16 phy_analogover;
+	u16 phy_analogoverval;
+	u16 phy_rfover;
+	u16 phy_rfoverval;
+	u16 phy_classctl;
+	u16 phy_cck_3E;
+	u16 phy_crs0;
+	u16 phy_pgactl;
+	u16 phy_cck_2A;
+	u16 phy_syncctl;
+	u16 phy_cck_30;
+	u16 phy_cck_06;
+
+	/* Radio registers */
+	u16 radio_43;
+	u16 radio_7A;
+	u16 radio_52;
+};
+
+static void lo_measure_setup(struct b43_wldev *dev,
+			     struct lo_g_saved_values *sav)
+{
+	struct ssb_sprom *sprom = dev->dev->bus_sprom;
+	struct b43_phy *phy = &dev->phy;
+	struct b43_phy_g *gphy = phy->g;
+	struct b43_txpower_lo_control *lo = gphy->lo_control;
+	u16 tmp;
+
+	if (b43_has_hardware_pctl(dev)) {
+		sav->phy_lo_mask = b43_phy_read(dev, B43_PHY_LO_MASK);
+		sav->phy_extg_01 = b43_phy_read(dev, B43_PHY_EXTG(0x01));
+		sav->phy_dacctl_hwpctl = b43_phy_read(dev, B43_PHY_DACCTL);
+		sav->phy_cck_14 = b43_phy_read(dev, B43_PHY_CCK(0x14));
+		sav->phy_hpwr_tssictl = b43_phy_read(dev, B43_PHY_HPWR_TSSICTL);
+
+		b43_phy_set(dev, B43_PHY_HPWR_TSSICTL, 0x100);
+		b43_phy_set(dev, B43_PHY_EXTG(0x01), 0x40);
+		b43_phy_set(dev, B43_PHY_DACCTL, 0x40);
+		b43_phy_set(dev, B43_PHY_CCK(0x14), 0x200);
+	}
+	if (phy->type == B43_PHYTYPE_B &&
+	    phy->radio_ver == 0x2050 && phy->radio_rev < 6) {
+		b43_phy_write(dev, B43_PHY_CCK(0x16), 0x410);
+		b43_phy_write(dev, B43_PHY_CCK(0x17), 0x820);
+	}
+	if (phy->rev >= 2) {
+		sav->phy_analogover = b43_phy_read(dev, B43_PHY_ANALOGOVER);
+		sav->phy_analogoverval =
+		    b43_phy_read(dev, B43_PHY_ANALOGOVERVAL);
+		sav->phy_rfover = b43_phy_read(dev, B43_PHY_RFOVER);
+		sav->phy_rfoverval = b43_phy_read(dev, B43_PHY_RFOVERVAL);
+		sav->phy_classctl = b43_phy_read(dev, B43_PHY_CLASSCTL);
+		sav->phy_cck_3E = b43_phy_read(dev, B43_PHY_CCK(0x3E));
+		sav->phy_crs0 = b43_phy_read(dev, B43_PHY_CRS0);
+
+		b43_phy_mask(dev, B43_PHY_CLASSCTL, 0xFFFC);
+		b43_phy_mask(dev, B43_PHY_CRS0, 0x7FFF);
+		b43_phy_set(dev, B43_PHY_ANALOGOVER, 0x0003);
+		b43_phy_mask(dev, B43_PHY_ANALOGOVERVAL, 0xFFFC);
+		if (phy->type == B43_PHYTYPE_G) {
+			if ((phy->rev >= 7) &&
+			    (sprom->boardflags_lo & B43_BFL_EXTLNA)) {
+				b43_phy_write(dev, B43_PHY_RFOVER, 0x933);
+			} else {
+				b43_phy_write(dev, B43_PHY_RFOVER, 0x133);
+			}
+		} else {
+			b43_phy_write(dev, B43_PHY_RFOVER, 0);
+		}
+		b43_phy_write(dev, B43_PHY_CCK(0x3E), 0);
+	}
+	sav->reg_3F4 = b43_read16(dev, 0x3F4);
+	sav->reg_3E2 = b43_read16(dev, 0x3E2);
+	sav->radio_43 = b43_radio_read16(dev, 0x43);
+	sav->radio_7A = b43_radio_read16(dev, 0x7A);
+	sav->phy_pgactl = b43_phy_read(dev, B43_PHY_PGACTL);
+	sav->phy_cck_2A = b43_phy_read(dev, B43_PHY_CCK(0x2A));
+	sav->phy_syncctl = b43_phy_read(dev, B43_PHY_SYNCCTL);
+	sav->phy_dacctl = b43_phy_read(dev, B43_PHY_DACCTL);
+
+	if (!has_tx_magnification(phy)) {
+		sav->radio_52 = b43_radio_read16(dev, 0x52);
+		sav->radio_52 &= 0x00F0;
+	}
+	if (phy->type == B43_PHYTYPE_B) {
+		sav->phy_cck_30 = b43_phy_read(dev, B43_PHY_CCK(0x30));
+		sav->phy_cck_06 = b43_phy_read(dev, B43_PHY_CCK(0x06));
+		b43_phy_write(dev, B43_PHY_CCK(0x30), 0x00FF);
+		b43_phy_write(dev, B43_PHY_CCK(0x06), 0x3F3F);
+	} else {
+		b43_write16(dev, 0x3E2, b43_read16(dev, 0x3E2)
+			    | 0x8000);
+	}
+	b43_write16(dev, 0x3F4, b43_read16(dev, 0x3F4)
+		    & 0xF000);
+
+	tmp =
+	    (phy->type == B43_PHYTYPE_G) ? B43_PHY_LO_MASK : B43_PHY_CCK(0x2E);
+	b43_phy_write(dev, tmp, 0x007F);
+
+	tmp = sav->phy_syncctl;
+	b43_phy_write(dev, B43_PHY_SYNCCTL, tmp & 0xFF7F);
+	tmp = sav->radio_7A;
+	b43_radio_write16(dev, 0x007A, tmp & 0xFFF0);
+
+	b43_phy_write(dev, B43_PHY_CCK(0x2A), 0x8A3);
+	if (phy->type == B43_PHYTYPE_G ||
+	    (phy->type == B43_PHYTYPE_B &&
+	     phy->radio_ver == 0x2050 && phy->radio_rev >= 6)) {
+		b43_phy_write(dev, B43_PHY_CCK(0x2B), 0x1003);
+	} else
+		b43_phy_write(dev, B43_PHY_CCK(0x2B), 0x0802);
+	if (phy->rev >= 2)
+		b43_dummy_transmission(dev, false, true);
+	b43_gphy_channel_switch(dev, 6, 0);
+	b43_radio_read16(dev, 0x51);	/* dummy read */
+	if (phy->type == B43_PHYTYPE_G)
+		b43_phy_write(dev, B43_PHY_CCK(0x2F), 0);
+
+	/* Re-measure the txctl values, if needed. */
+	if (time_before(lo->txctl_measured_time,
+			jiffies - B43_LO_TXCTL_EXPIRE))
+		lo_measure_txctl_values(dev);
+
+	if (phy->type == B43_PHYTYPE_G && phy->rev >= 3) {
+		b43_phy_write(dev, B43_PHY_LO_MASK, 0xC078);
+	} else {
+		if (phy->type == B43_PHYTYPE_B)
+			b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x8078);
+		else
+			b43_phy_write(dev, B43_PHY_LO_MASK, 0x8078);
+	}
+}
+
+static void lo_measure_restore(struct b43_wldev *dev,
+			       struct lo_g_saved_values *sav)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_phy_g *gphy = phy->g;
+	u16 tmp;
+
+	if (phy->rev >= 2) {
+		b43_phy_write(dev, B43_PHY_PGACTL, 0xE300);
+		tmp = (gphy->pga_gain << 8);
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA0);
+		udelay(5);
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA2);
+		udelay(2);
+		b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA3);
+	} else {
+		tmp = (gphy->pga_gain | 0xEFA0);
+		b43_phy_write(dev, B43_PHY_PGACTL, tmp);
+	}
+	if (phy->type == B43_PHYTYPE_G) {
+		if (phy->rev >= 3)
+			b43_phy_write(dev, B43_PHY_CCK(0x2E), 0xC078);
+		else
+			b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x8078);
+		if (phy->rev >= 2)
+			b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x0202);
+		else
+			b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x0101);
+	}
+	b43_write16(dev, 0x3F4, sav->reg_3F4);
+	b43_phy_write(dev, B43_PHY_PGACTL, sav->phy_pgactl);
+	b43_phy_write(dev, B43_PHY_CCK(0x2A), sav->phy_cck_2A);
+	b43_phy_write(dev, B43_PHY_SYNCCTL, sav->phy_syncctl);
+	b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl);
+	b43_radio_write16(dev, 0x43, sav->radio_43);
+	b43_radio_write16(dev, 0x7A, sav->radio_7A);
+	if (!has_tx_magnification(phy)) {
+		tmp = sav->radio_52;
+		b43_radio_maskset(dev, 0x52, 0xFF0F, tmp);
+	}
+	b43_write16(dev, 0x3E2, sav->reg_3E2);
+	if (phy->type == B43_PHYTYPE_B &&
+	    phy->radio_ver == 0x2050 && phy->radio_rev <= 5) {
+		b43_phy_write(dev, B43_PHY_CCK(0x30), sav->phy_cck_30);
+		b43_phy_write(dev, B43_PHY_CCK(0x06), sav->phy_cck_06);
+	}
+	if (phy->rev >= 2) {
+		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_CLASSCTL, sav->phy_classctl);
+		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_CCK(0x3E), sav->phy_cck_3E);
+		b43_phy_write(dev, B43_PHY_CRS0, sav->phy_crs0);
+	}
+	if (b43_has_hardware_pctl(dev)) {
+		tmp = (sav->phy_lo_mask & 0xBFFF);
+		b43_phy_write(dev, B43_PHY_LO_MASK, tmp);
+		b43_phy_write(dev, B43_PHY_EXTG(0x01), sav->phy_extg_01);
+		b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl_hwpctl);
+		b43_phy_write(dev, B43_PHY_CCK(0x14), sav->phy_cck_14);
+		b43_phy_write(dev, B43_PHY_HPWR_TSSICTL, sav->phy_hpwr_tssictl);
+	}
+	b43_gphy_channel_switch(dev, sav->old_channel, 1);
+}
+
+struct b43_lo_g_statemachine {
+	int current_state;
+	int nr_measured;
+	int state_val_multiplier;
+	u16 lowest_feedth;
+	struct b43_loctl min_loctl;
+};
+
+/* Loop over each possible value in this state. */
+static int lo_probe_possible_loctls(struct b43_wldev *dev,
+				    struct b43_loctl *probe_loctl,
+				    struct b43_lo_g_statemachine *d)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_phy_g *gphy = phy->g;
+	struct b43_loctl test_loctl;
+	struct b43_loctl orig_loctl;
+	struct b43_loctl prev_loctl = {
+		.i = -100,
+		.q = -100,
+	};
+	int i;
+	int begin, end;
+	int found_lower = 0;
+	u16 feedth;
+
+	static const struct b43_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 b43_loctl));
+	i = begin;
+	d->current_state = i;
+	while (1) {
+		B43_WARN_ON(!(i >= 1 && i <= 8));
+		memcpy(&test_loctl, &orig_loctl, sizeof(struct b43_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)) {
+			b43_lo_write(dev, &test_loctl);
+			feedth = lo_measure_feedthrough(dev, gphy->lna_gain,
+							gphy->pga_gain,
+							gphy->trsw_rx_gain);
+			if (feedth < d->lowest_feedth) {
+				memcpy(probe_loctl, &test_loctl,
+				       sizeof(struct b43_loctl));
+				found_lower = 1;
+				d->lowest_feedth = feedth;
+				if ((d->nr_measured < 2) &&
+				    !has_loopback_gain(phy))
+					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 b43_wldev *dev,
+					 struct b43_loctl *loctl,
+					 int *max_rx_gain)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_phy_g *gphy = phy->g;
+	struct b43_lo_g_statemachine d;
+	u16 feedth;
+	int found_lower;
+	struct b43_loctl probe_loctl;
+	int max_repeat = 1, repeat_cnt = 0;
+
+	d.nr_measured = 0;
+	d.state_val_multiplier = 1;
+	if (has_loopback_gain(phy))
+		d.state_val_multiplier = 3;
+
+	memcpy(&d.min_loctl, loctl, sizeof(struct b43_loctl));
+	if (has_loopback_gain(phy))
+		max_repeat = 4;
+	do {
+		b43_lo_write(dev, &d.min_loctl);
+		feedth = lo_measure_feedthrough(dev, gphy->lna_gain,
+						gphy->pga_gain,
+						gphy->trsw_rx_gain);
+		if (feedth < 0x258) {
+			if (feedth >= 0x12C)
+				*max_rx_gain += 6;
+			else
+				*max_rx_gain += 3;
+			feedth = lo_measure_feedthrough(dev, gphy->lna_gain,
+							gphy->pga_gain,
+							gphy->trsw_rx_gain);
+		}
+		d.lowest_feedth = feedth;
+
+		d.current_state = 0;
+		do {
+			B43_WARN_ON(!
+				    (d.current_state >= 0
+				     && d.current_state <= 8));
+			memcpy(&probe_loctl, &d.min_loctl,
+			       sizeof(struct b43_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 b43_loctl));
+			d.nr_measured++;
+		} while (d.nr_measured < 24);
+		memcpy(loctl, &d.min_loctl, sizeof(struct b43_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
+struct b43_lo_calib *b43_calibrate_lo_setting(struct b43_wldev *dev,
+					      const struct b43_bbatt *bbatt,
+					      const struct b43_rfatt *rfatt)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_phy_g *gphy = phy->g;
+	struct b43_loctl loctl = {
+		.i = 0,
+		.q = 0,
+	};
+	int max_rx_gain;
+	struct b43_lo_calib *cal;
+	struct lo_g_saved_values uninitialized_var(saved_regs);
+	/* Values from the "TXCTL Register and Value Table" */
+	u16 txctl_reg;
+	u16 txctl_value;
+	u16 pad_mix_gain;
+
+	saved_regs.old_channel = phy->channel;
+	b43_mac_suspend(dev);
+	lo_measure_setup(dev, &saved_regs);
+
+	txctl_reg = lo_txctl_register_table(dev, &txctl_value, &pad_mix_gain);
+
+	b43_radio_maskset(dev, 0x43, 0xFFF0, rfatt->att);
+	b43_radio_maskset(dev, txctl_reg, ~txctl_value, (rfatt->with_padmix ? txctl_value :0));
+
+	max_rx_gain = rfatt->att * 2;
+	max_rx_gain += bbatt->att / 2;
+	if (rfatt->with_padmix)
+		max_rx_gain -= pad_mix_gain;
+	if (has_loopback_gain(phy))
+		max_rx_gain += gphy->max_lb_gain;
+	lo_measure_gain_values(dev, max_rx_gain,
+			       has_loopback_gain(phy));
+
+	b43_gphy_set_baseband_attenuation(dev, bbatt->att);
+	lo_probe_loctls_statemachine(dev, &loctl, &max_rx_gain);
+
+	lo_measure_restore(dev, &saved_regs);
+	b43_mac_enable(dev);
+
+	if (b43_debug(dev, B43_DBG_LO)) {
+		b43dbg(dev->wl, "LO: Calibrated for BB(%u), RF(%u,%u) "
+		       "=> I=%d Q=%d\n",
+		       bbatt->att, rfatt->att, rfatt->with_padmix,
+		       loctl.i, loctl.q);
+	}
+
+	cal = kmalloc(sizeof(*cal), GFP_KERNEL);
+	if (!cal) {
+		b43warn(dev->wl, "LO calib: out of memory\n");
+		return NULL;
+	}
+	memcpy(&cal->bbatt, bbatt, sizeof(*bbatt));
+	memcpy(&cal->rfatt, rfatt, sizeof(*rfatt));
+	memcpy(&cal->ctl, &loctl, sizeof(loctl));
+	cal->calib_time = jiffies;
+	INIT_LIST_HEAD(&cal->list);
+
+	return cal;
+}
+
+/* Get a calibrated LO setting for the given attenuation values.
+ * Might return a NULL pointer under OOM! */
+static
+struct b43_lo_calib *b43_get_calib_lo_settings(struct b43_wldev *dev,
+					       const struct b43_bbatt *bbatt,
+					       const struct b43_rfatt *rfatt)
+{
+	struct b43_txpower_lo_control *lo = dev->phy.g->lo_control;
+	struct b43_lo_calib *c;
+
+	c = b43_find_lo_calib(lo, bbatt, rfatt);
+	if (c)
+		return c;
+	/* Not in the list of calibrated LO settings.
+	 * Calibrate it now. */
+	c = b43_calibrate_lo_setting(dev, bbatt, rfatt);
+	if (!c)
+		return NULL;
+	list_add(&c->list, &lo->calib_list);
+
+	return c;
+}
+
+void b43_gphy_dc_lt_init(struct b43_wldev *dev, bool update_all)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_phy_g *gphy = phy->g;
+	struct b43_txpower_lo_control *lo = gphy->lo_control;
+	int i;
+	int rf_offset, bb_offset;
+	const struct b43_rfatt *rfatt;
+	const struct b43_bbatt *bbatt;
+	u64 power_vector;
+	bool table_changed = false;
+
+	BUILD_BUG_ON(B43_DC_LT_SIZE != 32);
+	B43_WARN_ON(lo->rfatt_list.len * lo->bbatt_list.len > 64);
+
+	power_vector = lo->power_vector;
+	if (!update_all && !power_vector)
+		return; /* Nothing to do. */
+
+	/* Suspend the MAC now to avoid continuous suspend/enable
+	 * cycles in the loop. */
+	b43_mac_suspend(dev);
+
+	for (i = 0; i < B43_DC_LT_SIZE * 2; i++) {
+		struct b43_lo_calib *cal;
+		int idx;
+		u16 val;
+
+		if (!update_all && !(power_vector & (((u64)1ULL) << i)))
+			continue;
+		/* Update the table entry for this power_vector bit.
+		 * The table rows are RFatt entries and columns are BBatt. */
+		bb_offset = i / lo->rfatt_list.len;
+		rf_offset = i % lo->rfatt_list.len;
+		bbatt = &(lo->bbatt_list.list[bb_offset]);
+		rfatt = &(lo->rfatt_list.list[rf_offset]);
+
+		cal = b43_calibrate_lo_setting(dev, bbatt, rfatt);
+		if (!cal) {
+			b43warn(dev->wl, "LO: Could not "
+				"calibrate DC table entry\n");
+			continue;
+		}
+		/*FIXME: Is Q really in the low nibble? */
+		val = (u8)(cal->ctl.q);
+		val |= ((u8)(cal->ctl.i)) << 4;
+		kfree(cal);
+
+		/* Get the index into the hardware DC LT. */
+		idx = i / 2;
+		/* Change the table in memory. */
+		if (i % 2) {
+			/* Change the high byte. */
+			lo->dc_lt[idx] = (lo->dc_lt[idx] & 0x00FF)
+					 | ((val & 0x00FF) << 8);
+		} else {
+			/* Change the low byte. */
+			lo->dc_lt[idx] = (lo->dc_lt[idx] & 0xFF00)
+					 | (val & 0x00FF);
+		}
+		table_changed = true;
+	}
+	if (table_changed) {
+		/* The table changed in memory. Update the hardware table. */
+		for (i = 0; i < B43_DC_LT_SIZE; i++)
+			b43_phy_write(dev, 0x3A0 + i, lo->dc_lt[i]);
+	}
+	b43_mac_enable(dev);
+}
+
+/* Fixup the RF attenuation value for the case where we are
+ * using the PAD mixer. */
+static inline void b43_lo_fixup_rfatt(struct b43_rfatt *rf)
+{
+	if (!rf->with_padmix)
+		return;
+	if ((rf->att != 1) && (rf->att != 2) && (rf->att != 3))
+		rf->att = 4;
+}
+
+void b43_lo_g_adjust(struct b43_wldev *dev)
+{
+	struct b43_phy_g *gphy = dev->phy.g;
+	struct b43_lo_calib *cal;
+	struct b43_rfatt rf;
+
+	memcpy(&rf, &gphy->rfatt, sizeof(rf));
+	b43_lo_fixup_rfatt(&rf);
+
+	cal = b43_get_calib_lo_settings(dev, &gphy->bbatt, &rf);
+	if (!cal)
+		return;
+	b43_lo_write(dev, &cal->ctl);
+}
+
+void b43_lo_g_adjust_to(struct b43_wldev *dev,
+			u16 rfatt, u16 bbatt, u16 tx_control)
+{
+	struct b43_rfatt rf;
+	struct b43_bbatt bb;
+	struct b43_lo_calib *cal;
+
+	memset(&rf, 0, sizeof(rf));
+	memset(&bb, 0, sizeof(bb));
+	rf.att = rfatt;
+	bb.att = bbatt;
+	b43_lo_fixup_rfatt(&rf);
+	cal = b43_get_calib_lo_settings(dev, &bb, &rf);
+	if (!cal)
+		return;
+	b43_lo_write(dev, &cal->ctl);
+}
+
+/* Periodic LO maintanance work */
+void b43_lo_g_maintanance_work(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;
+	unsigned long now;
+	unsigned long expire;
+	struct b43_lo_calib *cal, *tmp;
+	bool current_item_expired = false;
+	bool hwpctl;
+
+	if (!lo)
+		return;
+	now = jiffies;
+	hwpctl = b43_has_hardware_pctl(dev);
+
+	if (hwpctl) {
+		/* Read the power vector and update it, if needed. */
+		expire = now - B43_LO_PWRVEC_EXPIRE;
+		if (time_before(lo->pwr_vec_read_time, expire)) {
+			lo_read_power_vector(dev);
+			b43_gphy_dc_lt_init(dev, 0);
+		}
+		//FIXME Recalc the whole DC table from time to time?
+	}
+
+	if (hwpctl)
+		return;
+	/* Search for expired LO settings. Remove them.
+	 * Recalibrate the current setting, if expired. */
+	expire = now - B43_LO_CALIB_EXPIRE;
+	list_for_each_entry_safe(cal, tmp, &lo->calib_list, list) {
+		if (!time_before(cal->calib_time, expire))
+			continue;
+		/* This item expired. */
+		if (b43_compare_bbatt(&cal->bbatt, &gphy->bbatt) &&
+		    b43_compare_rfatt(&cal->rfatt, &gphy->rfatt)) {
+			B43_WARN_ON(current_item_expired);
+			current_item_expired = true;
+		}
+		if (b43_debug(dev, B43_DBG_LO)) {
+			b43dbg(dev->wl, "LO: Item BB(%u), RF(%u,%u), "
+			       "I=%d, Q=%d expired\n",
+			       cal->bbatt.att, cal->rfatt.att,
+			       cal->rfatt.with_padmix,
+			       cal->ctl.i, cal->ctl.q);
+		}
+		list_del(&cal->list);
+		kfree(cal);
+	}
+	if (current_item_expired || unlikely(list_empty(&lo->calib_list))) {
+		/* Recalibrate currently used LO setting. */
+		if (b43_debug(dev, B43_DBG_LO))
+			b43dbg(dev->wl, "LO: Recalibrating current LO setting\n");
+		cal = b43_calibrate_lo_setting(dev, &gphy->bbatt, &gphy->rfatt);
+		if (cal) {
+			list_add(&cal->list, &lo->calib_list);
+			b43_lo_write(dev, &cal->ctl);
+		} else
+			b43warn(dev->wl, "Failed to recalibrate current LO setting\n");
+	}
+}
+
+void b43_lo_g_cleanup(struct b43_wldev *dev)
+{
+	struct b43_txpower_lo_control *lo = dev->phy.g->lo_control;
+	struct b43_lo_calib *cal, *tmp;
+
+	if (!lo)
+		return;
+	list_for_each_entry_safe(cal, tmp, &lo->calib_list, list) {
+		list_del(&cal->list);
+		kfree(cal);
+	}
+}
+
+/* LO Initialization */
+void b43_lo_g_init(struct b43_wldev *dev)
+{
+	if (b43_has_hardware_pctl(dev)) {
+		lo_read_power_vector(dev);
+		b43_gphy_dc_lt_init(dev, 1);
+	}
+}