b43: N-PHY: implement restoring general configuration

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

diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index d67ba20..68c1582 100644 (file)
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -995,6 +995,96 @@ static void b43_nphy_restore_rssi_cal(struct b43_wldev *dev)
        b43_phy_write(dev, B43_NPHY_RSSIMC_1Q_RSSI_Y, rssical_phy_regs[11]);
 }
 
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/GetIpaGainTbl */
+static const u32 *b43_nphy_get_ipa_gain_table(struct b43_wldev *dev)
+{
+       if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) {
+               if (dev->phy.rev >= 6) {
+                       /* TODO If the chip is 47162
+                               return txpwrctrl_tx_gain_ipa_rev5 */
+                       return txpwrctrl_tx_gain_ipa_rev6;
+               } else if (dev->phy.rev >= 5) {
+                       return txpwrctrl_tx_gain_ipa_rev5;
+               } else {
+                       return txpwrctrl_tx_gain_ipa;
+               }
+       } else {
+               return txpwrctrl_tx_gain_ipa_5g;
+       }
+}
+
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/RestoreCal */
+static void b43_nphy_restore_cal(struct b43_wldev *dev)
+{
+       struct b43_phy_n *nphy = dev->phy.n;
+
+       u16 coef[4];
+       u16 *loft = NULL;
+       u16 *table = NULL;
+
+       int i;
+       u16 *txcal_radio_regs = NULL;
+       struct b43_phy_n_iq_comp *rxcal_coeffs = NULL;
+
+       if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) {
+               if (nphy->iqcal_chanspec_2G == 0)
+                       return;
+               table = nphy->cal_cache.txcal_coeffs_2G;
+               loft = &nphy->cal_cache.txcal_coeffs_2G[5];
+       } else {
+               if (nphy->iqcal_chanspec_5G == 0)
+                       return;
+               table = nphy->cal_cache.txcal_coeffs_5G;
+               loft = &nphy->cal_cache.txcal_coeffs_5G[5];
+       }
+
+       /* TODO: Write an N PHY table with ID 15, length 4, offset 80,
+               width 16, and data from table */
+
+       for (i = 0; i < 4; i++) {
+               if (dev->phy.rev >= 3)
+                       table[i] = coef[i];
+               else
+                       coef[i] = 0;
+       }
+
+       /* TODO: Write an N PHY table with ID 15, length 4, offset 88,
+               width 16, and data from coef */
+       /* TODO: Write an N PHY table with ID 15, length 2, offset 85,
+               width 16 and data from loft */
+       /* TODO: Write an N PHY table with ID 15, length 2, offset 93,
+               width 16 and data from loft */
+
+       if (dev->phy.rev < 2)
+               b43_nphy_tx_iq_workaround(dev);
+
+       if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) {
+               txcal_radio_regs = nphy->cal_cache.txcal_radio_regs_2G;
+               rxcal_coeffs = &nphy->cal_cache.rxcal_coeffs_2G;
+       } else {
+               txcal_radio_regs = nphy->cal_cache.txcal_radio_regs_5G;
+               rxcal_coeffs = &nphy->cal_cache.rxcal_coeffs_5G;
+       }
+
+       /* TODO use some definitions */
+       if (dev->phy.rev >= 3) {
+               b43_radio_write(dev, 0x2021, txcal_radio_regs[0]);
+               b43_radio_write(dev, 0x2022, txcal_radio_regs[1]);
+               b43_radio_write(dev, 0x3021, txcal_radio_regs[2]);
+               b43_radio_write(dev, 0x3022, txcal_radio_regs[3]);
+               b43_radio_write(dev, 0x2023, txcal_radio_regs[4]);
+               b43_radio_write(dev, 0x2024, txcal_radio_regs[5]);
+               b43_radio_write(dev, 0x3023, txcal_radio_regs[6]);
+               b43_radio_write(dev, 0x3024, txcal_radio_regs[7]);
+       } else {
+               b43_radio_write(dev, 0x8B, txcal_radio_regs[0]);
+               b43_radio_write(dev, 0xBA, txcal_radio_regs[1]);
+               b43_radio_write(dev, 0x8D, txcal_radio_regs[2]);
+               b43_radio_write(dev, 0xBC, txcal_radio_regs[3]);
+       }
+       b43_nphy_rx_iq_coeffs(dev, true, rxcal_coeffs);
+}
+
 /*
  * Init N-PHY
  * http://bcm-v4.sipsolutions.net/802.11/PHY/Init/N