b43: HT-PHY: implement PA override

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

2 files changed, 27 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43/phy_ht.c b/drivers/net/wireless/b43/phy_ht.c
index 23a46c667974..1998dca73faa 100644
--- a/drivers/net/wireless/b43/phy_ht.c
+++ b/drivers/net/wireless/b43/phy_ht.c
@@ -178,6 +178,26 @@ static void b43_phy_ht_force_rf_sequence(struct b43_wldev *dev, u16 rf_seq)
         b43_phy_write(dev, B43_PHY_HT_RF_SEQ_MODE, save_seq_mode);
 }
 
+static void b43_phy_ht_pa_override(struct b43_wldev *dev, bool enable)
+{
+        struct b43_phy_ht *htphy = dev->phy.ht;
+        static const u16 regs[3] = { B43_PHY_HT_RF_CTL_INT_C1,
+                                     B43_PHY_HT_RF_CTL_INT_C2,
+                                     B43_PHY_HT_RF_CTL_INT_C3 };
+        int i;
+
+        if (enable) {
+                for (i = 0; i < 3; i++)
+                        b43_phy_write(dev, regs[i], htphy->rf_ctl_int_save[i]);
+        } else {
+                for (i = 0; i < 3; i++)
+                        htphy->rf_ctl_int_save[i] = b43_phy_read(dev, regs[i]);
+                /* TODO: Does 5GHz band use different value (not 0x0400)? */
+                for (i = 0; i < 3; i++)
+                        b43_phy_write(dev, regs[i], 0x0400);
+        }
+}
+
 /**************************************************
  * Various PHY ops
  **************************************************/
@@ -554,8 +574,10 @@ static int b43_phy_ht_op_init(struct b43_wldev *dev)
 
         b43_mac_phy_clock_set(dev, true);
 
+        b43_phy_ht_pa_override(dev, false);
         b43_phy_ht_force_rf_sequence(dev, B43_PHY_HT_RF_SEQ_TRIG_RX2TX);
         b43_phy_ht_force_rf_sequence(dev, B43_PHY_HT_RF_SEQ_TRIG_RST2RX);
+        b43_phy_ht_pa_override(dev, true);
 
         /* TODO: Should we restore it? Or store it in global PHY info? */
         b43_phy_ht_classifier(dev, 0, 0);
diff --git a/drivers/net/wireless/b43/phy_ht.h b/drivers/net/wireless/b43/phy_ht.h
index 52603affa2d6..684807c2f125 100644
--- a/drivers/net/wireless/b43/phy_ht.h
+++ b/drivers/net/wireless/b43/phy_ht.h
@@ -40,6 +40,10 @@
 
 #define B43_PHY_HT_RF_CTL1                      B43_PHY_EXTG(0x010)
 
+#define B43_PHY_HT_RF_CTL_INT_C1                B43_PHY_EXTG(0x04c)
+#define B43_PHY_HT_RF_CTL_INT_C2                B43_PHY_EXTG(0x06c)
+#define B43_PHY_HT_RF_CTL_INT_C3                B43_PHY_EXTG(0x08c)
+
 #define B43_PHY_HT_AFE_C1_OVER                  B43_PHY_EXTG(0x110)
 #define B43_PHY_HT_AFE_C1                       B43_PHY_EXTG(0x111)
 #define B43_PHY_HT_AFE_C2_OVER                  B43_PHY_EXTG(0x114)
@@ -62,6 +66,7 @@ struct b43_phy_ht_channeltab_e_phy {
 
 
 struct b43_phy_ht {
+        u16 rf_ctl_int_save[3];
 };