b43: N-PHY: add function than forces (not) staying in carrier search

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index b0ff3a3aaa7b..62ed7b7f6452 100644
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -443,6 +443,29 @@ static u16 b43_nphy_classifier(struct b43_wldev *dev, u16 mask, u16 val)
         return tmp;
 }
 
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/carriersearch */
+static void b43_nphy_stay_in_carrier_search(struct b43_wldev *dev, bool enable)
+{
+        struct b43_phy *phy = &dev->phy;
+        struct b43_phy_n *nphy = phy->n;
+
+        if (enable) {
+                u16 clip[] = { 0xFFFF, 0xFFFF };
+                if (nphy->deaf_count++ == 0) {
+                        nphy->classifier_state = b43_nphy_classifier(dev, 0, 0);
+                        b43_nphy_classifier(dev, 0x7, 0);
+                        b43_nphy_read_clip_detection(dev, nphy->clip_state);
+                        b43_nphy_write_clip_detection(dev, clip);
+                }
+                b43_nphy_reset_cca(dev);
+        } else {
+                if (--nphy->deaf_count == 0) {
+                        b43_nphy_classifier(dev, 0x7, nphy->classifier_state);
+                        b43_nphy_write_clip_detection(dev, nphy->clip_state);
+                }
+        }
+}
+
 enum b43_nphy_rf_sequence {
         B43_RFSEQ_RX2TX,
         B43_RFSEQ_TX2RX,