b43: N-PHY: add b43_nphy_rx_iq_coeffs and b43_nphy_tx_lp_fbw

index b39b817..22e7432 100644
@@ -454,6 +454,45 @@ static void b43_nphy_stay_in_carrier_search(struct b43_wldev *dev, bool enable)
 	}
 }
 
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/RxIqCoeffs */
+static void b43_nphy_rx_iq_coeffs(struct b43_wldev *dev, bool write,
+					struct b43_phy_n_iq_comp *pcomp)
+{
+	if (write) {
+		b43_phy_write(dev, B43_NPHY_C1_RXIQ_COMPA0, pcomp->a0);
+		b43_phy_write(dev, B43_NPHY_C1_RXIQ_COMPB0, pcomp->b0);
+		b43_phy_write(dev, B43_NPHY_C2_RXIQ_COMPA1, pcomp->a1);
+		b43_phy_write(dev, B43_NPHY_C2_RXIQ_COMPB1, pcomp->b1);
+	} else {
+		pcomp->a0 = b43_phy_read(dev, B43_NPHY_C1_RXIQ_COMPA0);
+		pcomp->b0 = b43_phy_read(dev, B43_NPHY_C1_RXIQ_COMPB0);
+		pcomp->a1 = b43_phy_read(dev, B43_NPHY_C2_RXIQ_COMPA1);
+		pcomp->b1 = b43_phy_read(dev, B43_NPHY_C2_RXIQ_COMPB1);
+	}
+}
+
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/TxLpFbw */
+static void b43_nphy_tx_lp_fbw(struct b43_wldev *dev)
+{
+	struct b43_phy_n *nphy = dev->phy.n;
+	u16 tmp;
+	enum ieee80211_band band = b43_current_band(dev->wl);
+	bool ipa = (nphy->ipa2g_on && band == IEEE80211_BAND_2GHZ) ||
+			(nphy->ipa5g_on && band == IEEE80211_BAND_5GHZ);
+
+	if (dev->phy.rev >= 3) {
+		if (ipa) {
+			tmp = 4;
+			b43_phy_write(dev, B43_NPHY_TXF_40CO_B32S2,
+			      (((((tmp << 3) | tmp) << 3) | tmp) << 3) | tmp);
+		}
+
+		tmp = 1;
+		b43_phy_write(dev, B43_NPHY_TXF_40CO_B1S2,
+			      (((((tmp << 3) | tmp) << 3) | tmp) << 3) | tmp);
+	}
+}
+
 /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/GetTxGain */
 static struct nphy_txgains b43_nphy_get_tx_gains(struct b43_wldev *dev)
 {

@@ -1212,7 +1251,7 @@ int b43_phy_initn(struct b43_wldev *dev)
 	b43_phy_write(dev, B43_NPHY_TXMACDELAY, 0x0320);
 	if (phy->rev >= 3 && phy->rev <= 6)
 		b43_phy_write(dev, B43_NPHY_PLOAD_CSENSE_EXTLEN, 0x0014);
-	//TODO N PHY TX LP FBW
+	b43_nphy_tx_lp_fbw(dev);
 	//TODO N PHY Spur Workaround
 
 	b43err(dev->wl, "IEEE 802.11n devices are not supported, yet.\n");

index ca1fd11..e2479c5 100644
@@ -924,6 +924,13 @@
 
 struct b43_wldev;
 
+struct b43_phy_n_iq_comp {
+	s16 a0;
+	s16 b0;
+	s16 a1;
+	s16 b1;
+};
+
 struct b43_phy_n_rssical_cache {
 	u16 rssical_radio_regs_2G[2];
 	u16 rssical_phy_regs_2G[12];