b43: HT-PHY: implement radio ops

Every PHY has some specific bit used for reading radio regs. Analyze of
MMIO dumps from BCM4331 and ndiswrapper has shown it is 0x200 for HT.
 radio_read(0x037f) -> 0x0073
radio_write(0x017f) <- 0x0072
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/phy_ht.c

@@ -90,6 +90,22 @@ static void b43_phy_ht_op_maskset(struct b43_wldev *dev, u16 reg, u16 mask,
 		    (b43_read16(dev, B43_MMIO_PHY_DATA) & mask) | set);
 }
 
+static u16 b43_phy_ht_op_radio_read(struct b43_wldev *dev, u16 reg)
+{
+	/* HT-PHY needs 0x200 for read access */
+	reg |= 0x200;
+
+	b43_write16(dev, B43_MMIO_RADIO24_CONTROL, reg);
+	return b43_read16(dev, B43_MMIO_RADIO24_DATA);
+}
+
+static void b43_phy_ht_op_radio_write(struct b43_wldev *dev, u16 reg,
+				      u16 value)
+{
+	b43_write16(dev, B43_MMIO_RADIO24_CONTROL, reg);
+	b43_write16(dev, B43_MMIO_RADIO24_DATA, value);
+}
+
 /**************************************************
  * PHY ops struct.
  **************************************************/
@@ -104,9 +120,9 @@ const struct b43_phy_operations b43_phyops_ht = {
 	.phy_read		= b43_phy_ht_op_read,
 	.phy_write		= b43_phy_ht_op_write,
 	.phy_maskset		= b43_phy_ht_op_maskset,
-	/*
 	.radio_read		= b43_phy_ht_op_radio_read,
 	.radio_write		= b43_phy_ht_op_radio_write,
+	/*
 	.software_rfkill	= b43_phy_ht_op_software_rfkill,
 	.switch_analog		= b43_phy_ht_op_switch_analog,
 	.switch_channel		= b43_phy_ht_op_switch_channel,