b43: Add more N-PHY stuff

This adds some minor stuff for N-PHY support. Nothing special.
Adds Analog switching and some TODOs for RSSI processing.
Just a patch I had floating around for quite some time now.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 15 insertions, 8 deletions

diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
index b2a3123f42db..19aefbfb2c93 100644
--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -513,7 +513,6 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
         u32 macstat;
         u16 chanid;
         u16 phytype;
-        u8 jssi;
         int padding;
 
         memset(&status, 0, sizeof(status));
@@ -521,7 +520,6 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
         /* Get metadata about the frame from the header. */
         phystat0 = le16_to_cpu(rxhdr->phy_status0);
         phystat3 = le16_to_cpu(rxhdr->phy_status3);
-        jssi = rxhdr->jssi;
         macstat = le32_to_cpu(rxhdr->mac_status);
         mactime = le16_to_cpu(rxhdr->mac_time);
         chanstat = le16_to_cpu(rxhdr->channel);
@@ -575,13 +573,22 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
                 }
         }
 
-        status.ssi = b43_rssi_postprocess(dev, jssi,
-                                          (phystat0 & B43_RX_PHYST0_OFDM),
-                                          (phystat0 & B43_RX_PHYST0_GAINCTL),
-                                          (phystat3 & B43_RX_PHYST3_TRSTATE));
+        /* Link quality statistics */
         status.noise = dev->stats.link_noise;
-        /* the next line looks wrong, but is what mac80211 wants */
-        status.signal = (jssi * 100) / B43_RX_MAX_SSI;
+        if ((chanstat & B43_RX_CHAN_PHYTYPE) == B43_PHYTYPE_N) {
+//              s8 rssi = max(rxhdr->power0, rxhdr->power1);
+                //TODO: Find out what the rssi value is (dBm or percentage?)
+                //      and also find out what the maximum possible value is.
+                //      Fill status.ssi and status.signal fields.
+        } else {
+                status.ssi = b43_rssi_postprocess(dev, rxhdr->jssi,
+                                                  (phystat0 & B43_RX_PHYST0_OFDM),
+                                                  (phystat0 & B43_RX_PHYST0_GAINCTL),
+                                                  (phystat3 & B43_RX_PHYST3_TRSTATE));
+                /* the next line looks wrong, but is what mac80211 wants */
+                status.signal = (rxhdr->jssi * 100) / B43_RX_MAX_SSI;
+        }
+
         if (phystat0 & B43_RX_PHYST0_OFDM)
                 status.rate_idx = b43_plcp_get_bitrate_idx_ofdm(plcp,
                                                 phytype == B43_PHYTYPE_A);