diff --git a/drivers/net/wireless/rtl8180_sa2400.c b/drivers/net/wireless/rtl8180_sa2400.c
new file mode 100644
index 0000000..e08ace7
--- /dev/null
+++ b/drivers/net/wireless/rtl8180_sa2400.c
@@ -0,0 +1,201 @@
+
+/*
+ * Radio tuning for Philips SA2400 on RTL8180
+ *
+ * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
+ *
+ * Code from the BSD driver and the rtl8181 project have been
+ * very useful to understand certain things
+ *
+ * I want to thanks the Authors of such projects and the Ndiswrapper
+ * project Authors.
+ *
+ * A special Big Thanks also is for all people who donated me cards,
+ * making possible the creation of the original rtl8180 driver
+ * from which this code is derived!
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <net/mac80211.h>
+
+#include "rtl8180.h"
+#include "rtl8180_sa2400.h"
+
+static const u32 sa2400_chan[] = {
+	0x00096c, /* ch1 */
+	0x080970,
+	0x100974,
+	0x180978,
+	0x000980,
+	0x080984,
+	0x100988,
+	0x18098c,
+	0x000994,
+	0x080998,
+	0x10099c,
+	0x1809a0,
+	0x0009a8,
+	0x0009b4, /* ch 14 */
+};
+
+static void write_sa2400(struct ieee80211_hw *dev, u8 addr, u32 data)
+{
+	struct rtl8180_priv *priv = dev->priv;
+	u32 phy_config;
+
+	/* MAC will bang bits to the sa2400. sw 3-wire is NOT used */
+	phy_config = 0xb0000000;
+
+	phy_config |= ((u32)(addr & 0xf)) << 24;
+	phy_config |= data & 0xffffff;
+
+	rtl818x_iowrite32(priv,
+		(__le32 __iomem *) &priv->map->RFPinsOutput, phy_config);
+
+	msleep(3);
+}
+
+static void sa2400_write_phy_antenna(struct ieee80211_hw *dev, short chan)
+{
+	struct rtl8180_priv *priv = dev->priv;
+	u8 ant = SA2400_ANTENNA;
+
+	if (priv->rfparam & RF_PARAM_ANTBDEFAULT)
+		ant |= BB_ANTENNA_B;
+
+	if (chan == 14)
+		ant |= BB_ANTATTEN_CHAN14;
+
+	rtl8180_write_phy(dev, 0x10, ant);
+
+}
+
+static void sa2400_rf_set_channel(struct ieee80211_hw *dev,
+				  struct ieee80211_conf *conf)
+{
+	struct rtl8180_priv *priv = dev->priv;
+	u32 txpw = priv->channels[conf->channel - 1].val & 0xFF;
+	u32 chan = sa2400_chan[conf->channel - 1];
+
+	write_sa2400(dev, 7, txpw);
+
+	sa2400_write_phy_antenna(dev, chan);
+
+	write_sa2400(dev, 0, chan);
+	write_sa2400(dev, 1, 0xbb50);
+	write_sa2400(dev, 2, 0x80);
+	write_sa2400(dev, 3, 0);
+}
+
+static void sa2400_rf_stop(struct ieee80211_hw *dev)
+{
+	write_sa2400(dev, 4, 0);
+}
+
+static void sa2400_rf_init(struct ieee80211_hw *dev)
+{
+	struct rtl8180_priv *priv = dev->priv;
+	u32 anaparam, txconf;
+	u8 firdac;
+	int analogphy = priv->rfparam & RF_PARAM_ANALOGPHY;
+
+	anaparam = priv->anaparam;
+	anaparam &= ~(1 << ANAPARAM_TXDACOFF_SHIFT);
+	anaparam &= ~ANAPARAM_PWR1_MASK;
+	anaparam &= ~ANAPARAM_PWR0_MASK;
+
+	if (analogphy) {
+		anaparam |= SA2400_ANA_ANAPARAM_PWR1_ON << ANAPARAM_PWR1_SHIFT;
+		firdac = 0;
+	} else {
+		anaparam |= (SA2400_DIG_ANAPARAM_PWR1_ON << ANAPARAM_PWR1_SHIFT);
+		anaparam |= (SA2400_ANAPARAM_PWR0_ON << ANAPARAM_PWR0_SHIFT);
+		firdac = 1 << SA2400_REG4_FIRDAC_SHIFT;
+	}
+
+	rtl8180_set_anaparam(priv, anaparam);
+
+	write_sa2400(dev, 0, sa2400_chan[0]);
+	write_sa2400(dev, 1, 0xbb50);
+	write_sa2400(dev, 2, 0x80);
+	write_sa2400(dev, 3, 0);
+	write_sa2400(dev, 4, 0x19340 | firdac);
+	write_sa2400(dev, 5, 0x1dfb | (SA2400_MAX_SENS - 54) << 15);
+	write_sa2400(dev, 4, 0x19348 | firdac); /* calibrate VCO */
+
+	if (!analogphy)
+		write_sa2400(dev, 4, 0x1938c); /*???*/
+
+	write_sa2400(dev, 4, 0x19340 | firdac);
+
+	write_sa2400(dev, 0, sa2400_chan[0]);
+	write_sa2400(dev, 1, 0xbb50);
+	write_sa2400(dev, 2, 0x80);
+	write_sa2400(dev, 3, 0);
+	write_sa2400(dev, 4, 0x19344 | firdac); /* calibrate filter */
+
+	/* new from rtl8180 embedded driver (rtl8181 project) */
+	write_sa2400(dev, 6, 0x13ff | (1 << 23)); /* MANRX */
+	write_sa2400(dev, 8, 0); /* VCO */
+
+	if (analogphy) {
+		rtl8180_set_anaparam(priv, anaparam |
+				     (1 << ANAPARAM_TXDACOFF_SHIFT));
+
+		txconf = rtl818x_ioread32(priv, &priv->map->TX_CONF);
+		rtl818x_iowrite32(priv, &priv->map->TX_CONF,
+			txconf | RTL818X_TX_CONF_LOOPBACK_CONT);
+
+		write_sa2400(dev, 4, 0x19341); /* calibrates DC */
+
+		/* a 5us sleep is required here,
+		 * we rely on the 3ms delay introduced in write_sa2400 */
+		write_sa2400(dev, 4, 0x19345);
+
+		/* a 20us sleep is required here,
+		 * we rely on the 3ms delay introduced in write_sa2400 */
+
+		rtl818x_iowrite32(priv, &priv->map->TX_CONF, txconf);
+
+		rtl8180_set_anaparam(priv, anaparam);
+	}
+	/* end new code */
+
+	write_sa2400(dev, 4, 0x19341 | firdac); /* RTX MODE */
+
+	/* baseband configuration */
+	rtl8180_write_phy(dev, 0, 0x98);
+	rtl8180_write_phy(dev, 3, 0x38);
+	rtl8180_write_phy(dev, 4, 0xe0);
+	rtl8180_write_phy(dev, 5, 0x90);
+	rtl8180_write_phy(dev, 6, 0x1a);
+	rtl8180_write_phy(dev, 7, 0x64);
+
+	sa2400_write_phy_antenna(dev, 1);
+
+	rtl8180_write_phy(dev, 0x11, 0x80);
+
+	if (rtl818x_ioread8(priv, &priv->map->CONFIG2) &
+	    RTL818X_CONFIG2_ANTENNA_DIV)
+		rtl8180_write_phy(dev, 0x12, 0xc7); /* enable ant diversity */
+	else
+		rtl8180_write_phy(dev, 0x12, 0x47); /* disable ant diversity */
+
+	rtl8180_write_phy(dev, 0x13, 0x90 | priv->csthreshold);
+
+	rtl8180_write_phy(dev, 0x19, 0x0);
+	rtl8180_write_phy(dev, 0x1a, 0xa0);
+}
+
+const struct rtl818x_rf_ops sa2400_rf_ops = {
+	.name		= "Philips",
+	.init		= sa2400_rf_init,
+	.stop		= sa2400_rf_stop,
+	.set_chan	= sa2400_rf_set_channel
+};