[PATCH] zd1211rw: Add UW2453 RF support

This patch adds support for another radio appearing in new devices: the
Ubec UW2453. It's more complicated than the other RF's we support, but
Ubec publish full tech specs so we're able to understand the vendor code
relatively well.

Now that we support UW2453, we also support Atheros' new USB chip: the
AR5007UG. From the little info we have, this appears to be just a
rebranded ZD1211B.

This RF code doesn't work very well -- lots more TX/RX errors than the
other RFs. However, the vendor driver doesn't do any better, so this is
all we can do for now.

[kune@deine-taler.de: bug fixes]
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/zd1211rw/Makefile

@@ -3,7 +3,7 @@ obj-$(CONFIG_ZD1211RW) += zd1211rw.o
 zd1211rw-objs := zd_chip.o zd_ieee80211.o \
 		zd_mac.o zd_netdev.o \
 		zd_rf_al2230.o zd_rf_rf2959.o \
-		zd_rf_al7230b.o \
+		zd_rf_al7230b.o zd_rf_uw2453.o \
 		zd_rf.o zd_usb.o zd_util.o
 
 ifeq ($(CONFIG_ZD1211RW_DEBUG),y)

drivers/net/wireless/zd1211rw/zd_chip.h

@@ -608,6 +608,9 @@ enum {
 #define CR_ZD1211B_TXOP			CTL_REG(0x0b20)
 #define CR_ZD1211B_RETRY_MAX		CTL_REG(0x0b28)
 
+/* Used to detect PLL lock */
+#define UW2453_INTR_REG			((zd_addr_t)0x85c1)
+
 #define CWIN_SIZE			0x007f043f
 
 

drivers/net/wireless/zd1211rw/zd_rf.c

@@ -67,25 +67,23 @@ void zd_rf_clear(struct zd_rf *rf)
 
 int zd_rf_init_hw(struct zd_rf *rf, u8 type)
 {
-	int r, t;
+	int r = 0;
+	int t;
 	struct zd_chip *chip = zd_rf_to_chip(rf);
 
 	ZD_ASSERT(mutex_is_locked(&chip->mutex));
 	switch (type) {
 	case RF2959_RF:
 		r = zd_rf_init_rf2959(rf);
-		if (r)
-			return r;
 		break;
 	case AL2230_RF:
 		r = zd_rf_init_al2230(rf);
-		if (r)
-			return r;
 		break;
 	case AL7230B_RF:
 		r = zd_rf_init_al7230b(rf);
-		if (r)
-			return r;
+		break;
+	case UW2453_RF:
+		r = zd_rf_init_uw2453(rf);
 		break;
 	default:
 		dev_err(zd_chip_dev(chip),
@@ -94,6 +92,9 @@ int zd_rf_init_hw(struct zd_rf *rf, u8 type)
 		return -ENODEV;
 	}
 
+	if (r)
+		return r;
+
 	rf->type = type;
 
 	r = zd_chip_lock_phy_regs(chip);

drivers/net/wireless/zd1211rw/zd_rf.h

@@ -89,5 +89,6 @@ static inline int zd_rf_should_update_pwr_int(struct zd_rf *rf)
 int zd_rf_init_rf2959(struct zd_rf *rf);
 int zd_rf_init_al2230(struct zd_rf *rf);
 int zd_rf_init_al7230b(struct zd_rf *rf);
+int zd_rf_init_uw2453(struct zd_rf *rf);
 
 #endif /* _ZD_RF_H */