b43: N-PHY: implement calculating IQ gain params

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

1 files changed, 38 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index d09a16f76007..8a3bc2c58a81 100644
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -1216,6 +1216,44 @@ static void b43_nphy_tx_cal_radio_setup(struct b43_wldev *dev)
         }
 }
 
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/IqCalGainParams */
+static void b43_nphy_iq_cal_gain_params(struct b43_wldev *dev, u16 core,
+                                        struct nphy_txgains target,
+                                        struct nphy_iqcal_params *params)
+{
+        int i, j, indx;
+        u16 gain;
+
+        if (dev->phy.rev >= 3) {
+                params->txgm = target.txgm[core];
+                params->pga = target.pga[core];
+                params->pad = target.pad[core];
+                params->ipa = target.ipa[core];
+                params->cal_gain = (params->txgm << 12) | (params->pga << 8) |
+                                        (params->pad << 4) | (params->ipa);
+                for (j = 0; j < 5; j++)
+                        params->ncorr[j] = 0x79;
+        } else {
+                gain = (target.pad[core]) | (target.pga[core] << 4) |
+                        (target.txgm[core] << 8);
+
+                indx = (b43_current_band(dev->wl) == IEEE80211_BAND_5GHZ) ?
+                        1 : 0;
+                for (i = 0; i < 9; i++)
+                        if (tbl_iqcal_gainparams[indx][i][0] == gain)
+                                break;
+                i = min(i, 8);
+
+                params->txgm = tbl_iqcal_gainparams[indx][i][1];
+                params->pga = tbl_iqcal_gainparams[indx][i][2];
+                params->pad = tbl_iqcal_gainparams[indx][i][3];
+                params->cal_gain = (params->txgm << 7) | (params->pga << 4) |
+                                        (params->pad << 2);
+                for (j = 0; j < 4; j++)
+                        params->ncorr[j] = tbl_iqcal_gainparams[indx][i][4 + j];
+        }
+}
+
 /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/UpdateTxCalLadder */
 static void b43_nphy_update_tx_cal_ladder(struct b43_wldev *dev, u16 core)
 {