From 4f4ab6cd1486fcb0ab8d689d625ac7691198f36b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Sun, 17 Jan 2010 13:03:55 +0100 Subject: b43: N-PHY: implement chain selection MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- drivers/net/wireless/b43/phy_n.c | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) (limited to 'drivers/net/wireless/b43/phy_n.c') diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c index 229f2d0364f2..90a49cfaa965 100644 --- a/drivers/net/wireless/b43/phy_n.c +++ b/drivers/net/wireless/b43/phy_n.c @@ -438,6 +438,34 @@ static void b43_nphy_update_mimo_config(struct b43_wldev *dev, s32 preamble) 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 @@ int b43_phy_initn(struct b43_wldev *dev) 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); -- cgit v1.2.2