b43: N-PHY: implement chain selection
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index 229f2d0..90a49cf 100644
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -438,6 +438,34 @@
b43_phy_write(dev, B43_NPHY_MIMOCFG, mimocfg);
}
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/Chains */
+static void b43_nphy_update_txrx_chain(struct b43_wldev *dev)
+{
+ struct b43_phy_n *nphy = dev->phy.n;
+
+ bool override = false;
+ u16 chain = 0x33;
+
+ if (nphy->txrx_chain == 0) {
+ chain = 0x11;
+ override = true;
+ } else if (nphy->txrx_chain == 1) {
+ chain = 0x22;
+ override = true;
+ }
+
+ b43_phy_maskset(dev, B43_NPHY_RFSEQCA,
+ ~(B43_NPHY_RFSEQCA_TXEN | B43_NPHY_RFSEQCA_RXEN),
+ chain);
+
+ if (override)
+ b43_phy_set(dev, B43_NPHY_RFSEQMODE,
+ B43_NPHY_RFSEQMODE_CAOVER);
+ else
+ b43_phy_mask(dev, B43_NPHY_RFSEQMODE,
+ ~B43_NPHY_RFSEQMODE_CAOVER);
+}
+
/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/RxIqEst */
static void b43_nphy_rx_iq_est(struct b43_wldev *dev, struct nphy_iq_est *est,
u16 samps, u8 time, bool wait)
@@ -2223,7 +2251,7 @@
b43_phy_write(dev, B43_NPHY_TXRIFS_FRDEL, 0x30);
b43_nphy_update_mimo_config(dev, nphy->preamble_override);
- /* TODO Update TX/RX chain */
+ b43_nphy_update_txrx_chain(dev);
if (phy->rev < 2) {
b43_phy_write(dev, B43_NPHY_DUP40_GFBL, 0xAA8);