b43: N-PHY: implement calculating IQ gain params

[mv-sheeva.git] / 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 242f16d489fa2776fa9798fca8845427ccec5bc9..8a3bc2c58a813316af143318e64acd6c7dfe14aa 100644 (file)
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -1173,6 +1173,112 @@ static const u32 *b43_nphy_get_ipa_gain_table(struct b43_wldev *dev)
        }
 }
 
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/TxCalRadioSetup */
+static void b43_nphy_tx_cal_radio_setup(struct b43_wldev *dev)
+{
+       struct b43_phy_n *nphy = dev->phy.n;
+       u16 *save = nphy->tx_rx_cal_radio_saveregs;
+
+       if (dev->phy.rev >= 3) {
+               /* TODO */
+       } else {
+               save[0] = b43_radio_read16(dev, B2055_C1_TX_RF_IQCAL1);
+               b43_radio_write16(dev, B2055_C1_TX_RF_IQCAL1, 0x29);
+
+               save[1] = b43_radio_read16(dev, B2055_C1_TX_RF_IQCAL2);
+               b43_radio_write16(dev, B2055_C1_TX_RF_IQCAL2, 0x54);
+
+               save[2] = b43_radio_read16(dev, B2055_C2_TX_RF_IQCAL1);
+               b43_radio_write16(dev, B2055_C2_TX_RF_IQCAL1, 0x29);
+
+               save[3] = b43_radio_read16(dev, B2055_C2_TX_RF_IQCAL2);
+               b43_radio_write16(dev, B2055_C2_TX_RF_IQCAL2, 0x54);
+
+               save[3] = b43_radio_read16(dev, B2055_C1_PWRDET_RXTX);
+               save[4] = b43_radio_read16(dev, B2055_C2_PWRDET_RXTX);
+
+               if (!(b43_phy_read(dev, B43_NPHY_BANDCTL) &
+                   B43_NPHY_BANDCTL_5GHZ)) {
+                       b43_radio_write16(dev, B2055_C1_PWRDET_RXTX, 0x04);
+                       b43_radio_write16(dev, B2055_C2_PWRDET_RXTX, 0x04);
+               } else {
+                       b43_radio_write16(dev, B2055_C1_PWRDET_RXTX, 0x20);
+                       b43_radio_write16(dev, B2055_C2_PWRDET_RXTX, 0x20);
+               }
+
+               if (dev->phy.rev < 2) {
+                       b43_radio_set(dev, B2055_C1_TX_BB_MXGM, 0x20);
+                       b43_radio_set(dev, B2055_C2_TX_BB_MXGM, 0x20);
+               } else {
+                       b43_radio_mask(dev, B2055_C1_TX_BB_MXGM, ~0x20);
+                       b43_radio_mask(dev, B2055_C2_TX_BB_MXGM, ~0x20);
+               }
+       }
+}
+
+/* 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)
+{
+       struct b43_phy_n *nphy = dev->phy.n;
+       int i;
+       u16 scale, entry;
+
+       u16 tmp = nphy->txcal_bbmult;
+       if (core == 0)
+               tmp >>= 8;
+       tmp &= 0xff;
+
+       for (i = 0; i < 18; i++) {
+               scale = (ladder_lo[i].percent * tmp) / 100;
+               entry = ((scale & 0xFF) << 8) | ladder_lo[i].g_env;
+               /* TODO: Write an N PHY Table with ID 15, length 1,
+                       offset i, width 16, and data entry */
+
+               scale = (ladder_iq[i].percent * tmp) / 100;
+               entry = ((scale & 0xFF) << 8) | ladder_iq[i].g_env;
+               /* TODO: Write an N PHY Table with ID 15, length 1,
+                       offset i + 32, width 16, and data entry */
+       }
+}
+
 /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/GetTxGain */
 static struct nphy_txgains b43_nphy_get_tx_gains(struct b43_wldev *dev)
 {