b43: rewrite A PHY initialization

Rewrite and sync A PHY initialization with specs, thus allowing for further
work to be done on 802.11a support. Note that A PHY initialization involves
G PHYs as well.

Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Acked-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/Makefile

@@ -5,6 +5,7 @@ b43-y				+= phy.o
 b43-y				+= sysfs.o
 b43-y				+= xmit.o
 b43-y				+= lo.o
+b43-y				+= wa.o
 # b43 RFKILL button support
 b43-$(CONFIG_B43_RFKILL)	+= rfkill.o
 # b43 LED support

drivers/net/wireless/b43/b43.h

@@ -544,6 +544,10 @@ struct b43_phy {
 	u16 lofcal;
 
 	u16 initval;		//FIXME rename?
+
+	/* OFDM address read/write caching for hardware auto-increment. */
+	u16 ofdm_addr;
+	u8 ofdm_valid; /* 0: invalid, 1: read, 2: write */
 };
 
 /* Data structures for DMA transmission, per 80211 core. */

drivers/net/wireless/b43/main.c

@@ -2254,6 +2254,9 @@ static int b43_chip_init(struct b43_wldev *dev)
 	b43_write16(dev, B43_MMIO_POWERUP_DELAY,
 		    dev->dev->bus->chipco.fast_pwrup_delay);
 
+	/* OFDM address caching. */
+	phy->ofdm_valid = 0;
+
 	err = 0;
 	b43dbg(dev->wl, "Chip initialized\n");
 out: