b43: N-PHY: add RSSI calibration restore

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

1 files changed, 44 insertions, 1 deletions

diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index 0e379427270a..b0ff3a3aaa7b 100644
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -897,6 +897,49 @@ static void b43_nphy_rssi_cal(struct b43_wldev *dev)
 }
 
 /*
+ * Restore RSSI Calibration
+ * http://bcm-v4.sipsolutions.net/802.11/PHY/N/RestoreRssiCal
+ */
+static void b43_nphy_restore_rssi_cal(struct b43_wldev *dev)
+{
+        struct b43_phy_n *nphy = dev->phy.n;
+
+        u16 *rssical_radio_regs = NULL;
+        u16 *rssical_phy_regs = NULL;
+
+        if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) {
+                if (!nphy->rssical_chanspec_2G)
+                        return;
+                rssical_radio_regs = nphy->rssical_cache.rssical_radio_regs_2G;
+                rssical_phy_regs = nphy->rssical_cache.rssical_phy_regs_2G;
+        } else {
+                if (!nphy->rssical_chanspec_5G)
+                        return;
+                rssical_radio_regs = nphy->rssical_cache.rssical_radio_regs_5G;
+                rssical_phy_regs = nphy->rssical_cache.rssical_phy_regs_5G;
+        }
+
+        /* TODO use some definitions */
+        b43_radio_maskset(dev, 0x602B, 0xE3, rssical_radio_regs[0]);
+        b43_radio_maskset(dev, 0x702B, 0xE3, rssical_radio_regs[1]);
+
+        b43_phy_write(dev, B43_NPHY_RSSIMC_0I_RSSI_Z, rssical_phy_regs[0]);
+        b43_phy_write(dev, B43_NPHY_RSSIMC_0Q_RSSI_Z, rssical_phy_regs[1]);
+        b43_phy_write(dev, B43_NPHY_RSSIMC_1I_RSSI_Z, rssical_phy_regs[2]);
+        b43_phy_write(dev, B43_NPHY_RSSIMC_1Q_RSSI_Z, rssical_phy_regs[3]);
+
+        b43_phy_write(dev, B43_NPHY_RSSIMC_0I_RSSI_X, rssical_phy_regs[4]);
+        b43_phy_write(dev, B43_NPHY_RSSIMC_0Q_RSSI_X, rssical_phy_regs[5]);
+        b43_phy_write(dev, B43_NPHY_RSSIMC_1I_RSSI_X, rssical_phy_regs[6]);
+        b43_phy_write(dev, B43_NPHY_RSSIMC_1Q_RSSI_X, rssical_phy_regs[7]);
+
+        b43_phy_write(dev, B43_NPHY_RSSIMC_0I_RSSI_Y, rssical_phy_regs[8]);
+        b43_phy_write(dev, B43_NPHY_RSSIMC_0Q_RSSI_Y, rssical_phy_regs[9]);
+        b43_phy_write(dev, B43_NPHY_RSSIMC_1I_RSSI_Y, rssical_phy_regs[10]);
+        b43_phy_write(dev, B43_NPHY_RSSIMC_1Q_RSSI_Y, rssical_phy_regs[11]);
+}
+
+/*
  * Init N-PHY
  * http://bcm-v4.sipsolutions.net/802.11/PHY/Init/N
  */
@@ -1034,7 +1077,7 @@ int b43_phy_initn(struct b43_wldev *dev)
                 if (do_rssi_cal)
                         b43_nphy_rssi_cal(dev);
                 else
-                        ;/* b43_nphy_restore_rssi_cal(dev); */
+                        b43_nphy_restore_rssi_cal(dev);
         } else {
                 b43_nphy_rssi_cal(dev);
         }