b43: N-PHY: implement TX power control coef setup

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

1 files changed, 68 insertions, 1 deletions

diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index f982f56d5bf3..a0e8283519fd 100644
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -659,6 +659,73 @@ static void b43_nphy_stay_in_carrier_search(struct b43_wldev *dev, bool enable)
         }
 }
 
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/TxPwrCtrlCoefSetup */
+static void b43_nphy_tx_pwr_ctrl_coef_setup(struct b43_wldev *dev)
+{
+        struct b43_phy_n *nphy = dev->phy.n;
+        int i, j;
+        u32 tmp;
+        u32 cur_real, cur_imag, real_part, imag_part;
+
+        u16 buffer[7];
+
+        if (nphy->hang_avoid)
+                b43_nphy_stay_in_carrier_search(dev, true);
+
+        /* TODO: Read an N PHY Table with ID 15, length 7, offset 80,
+                width 16, and data pointer buffer */
+
+        for (i = 0; i < 2; i++) {
+                tmp = ((buffer[i * 2] & 0x3FF) << 10) |
+                        (buffer[i * 2 + 1] & 0x3FF);
+                b43_phy_write(dev, B43_NPHY_TABLE_ADDR,
+                                (((i + 26) << 10) | 320));
+                for (j = 0; j < 128; j++) {
+                        b43_phy_write(dev, B43_NPHY_TABLE_DATAHI,
+                                        ((tmp >> 16) & 0xFFFF));
+                        b43_phy_write(dev, B43_NPHY_TABLE_DATALO,
+                                        (tmp & 0xFFFF));
+                }
+        }
+
+        for (i = 0; i < 2; i++) {
+                tmp = buffer[5 + i];
+                real_part = (tmp >> 8) & 0xFF;
+                imag_part = (tmp & 0xFF);
+                b43_phy_write(dev, B43_NPHY_TABLE_ADDR,
+                                (((i + 26) << 10) | 448));
+
+                if (dev->phy.rev >= 3) {
+                        cur_real = real_part;
+                        cur_imag = imag_part;
+                        tmp = ((cur_real & 0xFF) << 8) | (cur_imag & 0xFF);
+                }
+
+                for (j = 0; j < 128; j++) {
+                        if (dev->phy.rev < 3) {
+                                cur_real = (real_part * loscale[j] + 128) >> 8;
+                                cur_imag = (imag_part * loscale[j] + 128) >> 8;
+                                tmp = ((cur_real & 0xFF) << 8) |
+                                        (cur_imag & 0xFF);
+                        }
+                        b43_phy_write(dev, B43_NPHY_TABLE_DATAHI,
+                                        ((tmp >> 16) & 0xFFFF));
+                        b43_phy_write(dev, B43_NPHY_TABLE_DATALO,
+                                        (tmp & 0xFFFF));
+                }
+        }
+
+        if (dev->phy.rev >= 3) {
+                b43_shm_write16(dev, B43_SHM_SHARED,
+                                B43_SHM_SH_NPHY_TXPWR_INDX0, 0xFFFF);
+                b43_shm_write16(dev, B43_SHM_SHARED,
+                                B43_SHM_SH_NPHY_TXPWR_INDX1, 0xFFFF);
+        }
+
+        if (nphy->hang_avoid)
+                b43_nphy_stay_in_carrier_search(dev, false);
+}
+
 enum b43_nphy_rf_sequence {
         B43_RFSEQ_RX2TX,
         B43_RFSEQ_TX2RX,
@@ -2040,7 +2107,7 @@ int b43_phy_initn(struct b43_wldev *dev)
                 b43_nphy_restore_cal(dev);
         }
 
-        /* b43_nphy_tx_pwr_ctrl_coef_setup(dev); */
+        b43_nphy_tx_pwr_ctrl_coef_setup(dev);
         /* TODO N PHY TX Power Control Enable with argument tx_pwr_state */
         b43_phy_write(dev, B43_NPHY_TXMACIF_HOLDOFF, 0x0015);
         b43_phy_write(dev, B43_NPHY_TXMACDELAY, 0x0320);