b43legacy: Fix to enhance TX speed

Recent changes in the specifications have improved the performance
of the BCM4306/2 devices that use b43legacy as the driver. These
"errors" in the specs have been present from the very first implementation
of bcm43xx.

Signed-off-by: Ehud Gavron <gavron@wetwork.net>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 19 insertions, 13 deletions

diff --git a/drivers/net/wireless/b43legacy/phy.c b/drivers/net/wireless/b43legacy/phy.c
index 768cccb9b1ba..bed67a54250c 100644
--- a/drivers/net/wireless/b43legacy/phy.c
+++ b/drivers/net/wireless/b43legacy/phy.c
@@ -595,12 +595,14 @@ static void b43legacy_phy_initb5(struct b43legacy_wldev *dev)
                                     0x0035) & 0xFFC0) | 0x0064);
                 b43legacy_phy_write(dev, 0x005D, (b43legacy_phy_read(dev,
                                     0x005D) & 0xFF80) | 0x000A);
+                b43legacy_phy_write(dev, 0x5B, 0x0000);
+                b43legacy_phy_write(dev, 0x5C, 0x0000);
         }
 
         if (dev->bad_frames_preempt)
                 b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD,
                                     b43legacy_phy_read(dev,
-                                    B43legacy_PHY_RADIO_BITFIELD) | (1 << 11));
+                                    B43legacy_PHY_RADIO_BITFIELD) | (1 << 12));
 
         if (phy->analog == 1) {
                 b43legacy_phy_write(dev, 0x0026, 0xCE00);
@@ -753,7 +755,7 @@ static void b43legacy_phy_initb6(struct b43legacy_wldev *dev)
                 b43legacy_radio_write16(dev, 0x0050, 0x0020);
         }
         if (phy->radio_rev <= 2) {
-                b43legacy_radio_write16(dev, 0x007C, 0x0020);
+                b43legacy_radio_write16(dev, 0x0050, 0x0020);
                 b43legacy_radio_write16(dev, 0x005A, 0x0070);
                 b43legacy_radio_write16(dev, 0x005B, 0x007B);
                 b43legacy_radio_write16(dev, 0x005C, 0x00B0);
@@ -771,7 +773,7 @@ static void b43legacy_phy_initb6(struct b43legacy_wldev *dev)
                 b43legacy_phy_write(dev, 0x002A, 0x8AC0);
         b43legacy_phy_write(dev, 0x0038, 0x0668);
         b43legacy_radio_set_txpower_bg(dev, 0xFFFF, 0xFFFF, 0xFFFF);
-        if (phy->radio_rev <= 5)
+        if (phy->radio_rev == 4 || phy->radio_rev == 5)
                 b43legacy_phy_write(dev, 0x005D, (b43legacy_phy_read(dev,
                                     0x005D) & 0xFF80) | 0x0003);
         if (phy->radio_rev <= 2)
@@ -1010,7 +1012,7 @@ static void b43legacy_phy_initg(struct b43legacy_wldev *dev)
                 b43legacy_phy_initb5(dev);
         else
                 b43legacy_phy_initb6(dev);
-        if (phy->rev >= 2 || phy->gmode)
+        if (phy->rev >= 2 && phy->gmode)
                 b43legacy_phy_inita(dev);
 
         if (phy->rev >= 2) {
@@ -1025,18 +1027,22 @@ static void b43legacy_phy_initg(struct b43legacy_wldev *dev)
                 b43legacy_phy_write(dev, 0x0811, 0x0400);
                 b43legacy_phy_write(dev, 0x0015, 0x00C0);
         }
-        if (phy->rev >= 2 || phy->gmode) {
+        if (phy->gmode) {
                 tmp = b43legacy_phy_read(dev, 0x0400) & 0xFF;
-                if (tmp == 3 || tmp == 5) {
+                if (tmp == 3) {
+                        b43legacy_phy_write(dev, 0x04C2, 0x1816);
+                        b43legacy_phy_write(dev, 0x04C3, 0x8606);
+                }
+                if (tmp == 4 || tmp == 5) {
                         b43legacy_phy_write(dev, 0x04C2, 0x1816);
                         b43legacy_phy_write(dev, 0x04C3, 0x8006);
-                        if (tmp == 5)
-                                b43legacy_phy_write(dev, 0x04CC,
-                                                    (b43legacy_phy_read(dev,
-                                                     0x04CC) & 0x00FF) |
-                                                     0x1F00);
+                        b43legacy_phy_write(dev, 0x04CC,
+                                            (b43legacy_phy_read(dev,
+                                             0x04CC) & 0x00FF) |
+                                             0x1F00);
                 }
-                b43legacy_phy_write(dev, 0x047E, 0x0078);
+                if (phy->rev >= 2)
+                        b43legacy_phy_write(dev, 0x047E, 0x0078);
         }
         if (phy->radio_rev == 8) {
                 b43legacy_phy_write(dev, 0x0801, b43legacy_phy_read(dev, 0x0801)
@@ -1078,7 +1084,7 @@ static void b43legacy_phy_initg(struct b43legacy_wldev *dev)
                 else
                         b43legacy_phy_write(dev, 0x002F, 0x0202);
         }
-        if (phy->gmode || phy->rev >= 2) {
+        if (phy->gmode) {
                 b43legacy_phy_lo_adjust(dev, 0);
                 b43legacy_phy_write(dev, 0x080F, 0x8078);
         }