b43: Add NPHY radio init code

This adds some code to init the 2055 radio.
This patch adds two files "tables_nphy.h" and "tables_nphy.c"
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/Makefile

 b43-y				+= main.o
 b43-y				+= tables.o
+b43-y				+= tables_nphy.o
 b43-y				+= phy.o
 b43-y				+= nphy.o
 b43-y				+= sysfs.o

drivers/net/wireless/b43/main.c

@@ -2132,6 +2132,7 @@ static void b43_rate_memory_init(struct b43_wldev *dev)
 	switch (dev->phy.type) {
 	case B43_PHYTYPE_A:
 	case B43_PHYTYPE_G:
+	case B43_PHYTYPE_N:
 		b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
 		b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
 		b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
@@ -2320,6 +2321,8 @@ static void b43_periodic_every60sec(struct b43_wldev *dev)
 {
 	struct b43_phy *phy = &dev->phy;
 
+	if (phy->type != B43_PHYTYPE_G)
+		return;
 	if (!b43_has_hardware_pctl(phy))
 		b43_lo_g_ctl_mark_all_unused(dev);
 	if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) {

drivers/net/wireless/b43/nphy.c

@@ -24,11 +24,107 @@
 
 #include "b43.h"
 #include "nphy.h"
+#include "tables_nphy.h"
 
 
+void b43_nphy_set_rxantenna(struct b43_wldev *dev, int antenna)
+{//TODO
+}
+
+void b43_nphy_xmitpower(struct b43_wldev *dev)
+{//TODO
+}
+
+/* Tune the hardware to a new channel. Don't call this directly.
+ * Use b43_radio_selectchannel() */
+void b43_nphy_selectchannel(struct b43_wldev *dev, u8 channel)
+{
+
+//TODO
+}
+
+static void b43_radio_init2055_pre(struct b43_wldev *dev)
+{
+	b43_phy_mask(dev, B43_NPHY_RFCTL_CMD,
+		     ~B43_NPHY_RFCTL_CMD_PORFORCE);
+	b43_phy_set(dev, B43_NPHY_RFCTL_CMD,
+		    B43_NPHY_RFCTL_CMD_CHIP0PU |
+		    B43_NPHY_RFCTL_CMD_OEPORFORCE);
+	b43_phy_set(dev, B43_NPHY_RFCTL_CMD,
+		    B43_NPHY_RFCTL_CMD_PORFORCE);
+}
+
+static void b43_radio_init2055_post(struct b43_wldev *dev)
+{
+	struct ssb_sprom *sprom = &(dev->dev->bus->sprom);
+	struct ssb_boardinfo *binfo = &(dev->dev->bus->boardinfo);
+	int i;
+	u16 val;
+
+	b43_radio_mask(dev, B2055_MASTER1, 0xFFF3);
+	msleep(1);
+	if ((sprom->revision != 4) || !(sprom->boardflags_hi & 0x0002)) {
+		if ((binfo->vendor != PCI_VENDOR_ID_BROADCOM) ||
+		    (binfo->type != 0x46D) ||
+		    (binfo->rev < 0x41)) {
+			b43_radio_mask(dev, B2055_C1_RX_BB_REG, 0x7F);
+			b43_radio_mask(dev, B2055_C1_RX_BB_REG, 0x7F);
+			msleep(1);
+		}
+	}
+	b43_radio_maskset(dev, B2055_RRCCAL_NOPTSEL, 0x3F, 0x2C);
+	msleep(1);
+	b43_radio_write16(dev, B2055_CAL_MISC, 0x3C);
+	msleep(1);
+	b43_radio_mask(dev, B2055_CAL_MISC, 0xFFBE);
+	msleep(1);
+	b43_radio_set(dev, B2055_CAL_LPOCTL, 0x80);
+	msleep(1);
+	b43_radio_set(dev, B2055_CAL_MISC, 0x1);
+	msleep(1);
+	b43_radio_set(dev, B2055_CAL_MISC, 0x40);
+	msleep(1);
+	for (i = 0; i < 100; i++) {
+		val = b43_radio_read16(dev, B2055_CAL_COUT2);
+		if (val & 0x80)
+			break;
+		udelay(10);
+	}
+	msleep(1);
+	b43_radio_mask(dev, B2055_CAL_LPOCTL, 0xFF7F);
+	msleep(1);
+	b43_radio_selectchannel(dev, dev->phy.channel, 0);
+	b43_radio_write16(dev, B2055_C1_RX_BB_LPF, 0x9);
+	b43_radio_write16(dev, B2055_C2_RX_BB_LPF, 0x9);
+	b43_radio_write16(dev, B2055_C1_RX_BB_MIDACHP, 0x83);
+	b43_radio_write16(dev, B2055_C2_RX_BB_MIDACHP, 0x83);
+}
+
+/* Initialize a Broadcom 2055 N-radio */
+static void b43_radio_init2055(struct b43_wldev *dev)
+{
+	b43_radio_init2055_pre(dev);
+	if (b43_status(dev) < B43_STAT_INITIALIZED)
+		b2055_upload_inittab(dev, 0, 1);
+	else
+		b2055_upload_inittab(dev, 0/*FIXME on 5ghz band*/, 0);
+	b43_radio_init2055_post(dev);
+}
+
+void b43_nphy_radio_turn_on(struct b43_wldev *dev)
+{
+	b43_radio_init2055(dev);
+}
+
+void b43_nphy_radio_turn_off(struct b43_wldev *dev)
+{
+	b43_phy_mask(dev, B43_NPHY_RFCTL_CMD,
+		     ~B43_NPHY_RFCTL_CMD_EN);
+}
+
 int b43_phy_initn(struct b43_wldev *dev)
 {
 	b43err(dev->wl, "IEEE 802.11n devices are not supported, yet.\n");
 
-	return -EOPNOTSUPP;
+	return 0;
 }

drivers/net/wireless/b43/nphy.h

@@ -177,6 +177,7 @@
 #define  B43_NPHY_RFCTL_CMD_RXEN		0x0100 /* RX enable */
 #define  B43_NPHY_RFCTL_CMD_TXEN		0x0200 /* TX enable */
 #define  B43_NPHY_RFCTL_CMD_CHIP0PU		0x0400 /* Chip0 PU */
+#define  B43_NPHY_RFCTL_CMD_EN			0x0800 /* Radio enabled */
 #define  B43_NPHY_RFCTL_CMD_SEQENCORE		0xF000 /* Seq en core */
 #define  B43_NPHY_RFCTL_CMD_SEQENCORE_SHIFT	12
 #define B43_NPHY_RFCTL_RSSIO1			B43_PHY_N(0x07A) /* RF control (RSSI others 1) */
@@ -913,4 +914,12 @@ struct b43_wldev;
 
 int b43_phy_initn(struct b43_wldev *dev);
 
+void b43_nphy_radio_turn_on(struct b43_wldev *dev);
+void b43_nphy_radio_turn_off(struct b43_wldev *dev);
+
+void b43_nphy_selectchannel(struct b43_wldev *dev, u8 channel);
+
+void b43_nphy_xmitpower(struct b43_wldev *dev);
+void b43_nphy_set_rxantenna(struct b43_wldev *dev, int antenna);
+
 #endif /* B43_NPHY_H_ */

drivers/net/wireless/b43/phy.c

@@ -308,6 +308,24 @@ void b43_phy_write(struct b43_wldev *dev, u16 offset, u16 val)
 	b43_write16(dev, B43_MMIO_PHY_DATA, val);
 }
 
+void b43_phy_mask(struct b43_wldev *dev, u16 offset, u16 mask)
+{
+	b43_phy_write(dev, offset,
+		      b43_phy_read(dev, offset) & mask);
+}
+
+void b43_phy_set(struct b43_wldev *dev, u16 offset, u16 set)
+{
+	b43_phy_write(dev, offset,
+		      b43_phy_read(dev, offset) | set);
+}
+
+void b43_phy_maskset(struct b43_wldev *dev, u16 offset, u16 mask, u16 set)
+{
+	b43_phy_write(dev, offset,
+		      (b43_phy_read(dev, offset) & mask) | set);
+}
+
 /* Adjust the transmission power output (G-PHY) */
 void b43_set_txpower_g(struct b43_wldev *dev,
 		       const struct b43_bbatt *bbatt,
@@ -1857,6 +1875,9 @@ void b43_phy_xmitpower(struct b43_wldev *dev)
 			b43_phy_unlock(dev);
 			break;
 		}
+	case B43_PHYTYPE_N:
+		b43_nphy_xmitpower(dev);
+		break;
 	default:
 		B43_WARN_ON(1);
 	}
@@ -2116,6 +2137,9 @@ void b43_set_rx_antenna(struct b43_wldev *dev, int antenna)
 		    << B43_PHY_BBANDCFG_RXANT_SHIFT;
 		b43_phy_write(dev, B43_PHY_CCKBBANDCFG, tmp);
 		break;
+	case B43_PHYTYPE_N:
+		b43_nphy_set_rxantenna(dev, antenna);
+		break;
 	default:
 		B43_WARN_ON(1);
 	}
@@ -2215,6 +2239,24 @@ void b43_radio_write16(struct b43_wldev *dev, u16 offset, u16 val)
 	b43_write16(dev, B43_MMIO_RADIO_DATA_LOW, val);
 }
 
+void b43_radio_mask(struct b43_wldev *dev, u16 offset, u16 mask)
+{
+	b43_radio_write16(dev, offset,
+			  b43_radio_read16(dev, offset) & mask);
+}
+
+void b43_radio_set(struct b43_wldev *dev, u16 offset, u16 set)
+{
+	b43_radio_write16(dev, offset,
+			  b43_radio_read16(dev, offset) | set);
+}
+
+void b43_radio_maskset(struct b43_wldev *dev, u16 offset, u16 mask, u16 set)
+{
+	b43_radio_write16(dev, offset,
+			  (b43_radio_read16(dev, offset) & mask) | set);
+}
+
 static void b43_set_all_gains(struct b43_wldev *dev,
 			      s16 first, s16 second, s16 third)
 {
@@ -3852,6 +3894,10 @@ int b43_radio_selectchannel(struct b43_wldev *dev,
 		case B43_PHYTYPE_G:
 			channel = B43_DEFAULT_CHANNEL_BG;
 			break;
+		case B43_PHYTYPE_N:
+			//FIXME check if we are on 2.4GHz or 5GHz and set a default channel.
+			channel = 1;
+			break;
 		default:
 			B43_WARN_ON(1);
 		}
@@ -3861,11 +3907,13 @@ int b43_radio_selectchannel(struct b43_wldev *dev,
 	 * firmware from sending ghost packets.
 	 */
 	channelcookie = channel;
-	if (phy->type == B43_PHYTYPE_A)
+	if (0 /*FIXME on 5Ghz */)
 		channelcookie |= 0x100;
+	//FIXME set 40Mhz flag if required
 	b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_CHAN, channelcookie);
 
-	if (phy->type == B43_PHYTYPE_A) {
+	switch (phy->type) {
+	case B43_PHYTYPE_A:
 		if (channel > 200)
 			return -EINVAL;
 		freq = channel2freq_a(channel);
@@ -3914,7 +3962,8 @@ int b43_radio_selectchannel(struct b43_wldev *dev,
 		b43_radio_set_tx_iq(dev);
 		//TODO: TSSI2dbm workaround
 		b43_phy_xmitpower(dev);	//FIXME correct?
-	} else {
+		break;
+	case B43_PHYTYPE_G:
 		if ((channel < 1) || (channel > 14))
 			return -EINVAL;
 
@@ -3939,6 +3988,12 @@ int b43_radio_selectchannel(struct b43_wldev *dev,
 				    b43_read16(dev, B43_MMIO_CHANNEL_EXT)
 				    & 0xF7BF);
 		}
+		break;
+	case B43_PHYTYPE_N:
+		b43_nphy_selectchannel(dev, channel);
+		break;
+	default:
+		B43_WARN_ON(1);
 	}
 
 	phy->channel = channel;
@@ -3985,6 +4040,9 @@ void b43_radio_turn_on(struct b43_wldev *dev)
 		err |= b43_radio_selectchannel(dev, channel, 0);
 		B43_WARN_ON(err);
 		break;
+	case B43_PHYTYPE_N:
+		b43_nphy_radio_turn_on(dev);
+		break;
 	default:
 		B43_WARN_ON(1);
 	}
@@ -3998,13 +4056,17 @@ void b43_radio_turn_off(struct b43_wldev *dev, bool force)
 	if (!phy->radio_on && !force)
 		return;
 
-	if (phy->type == B43_PHYTYPE_A) {
+	switch (phy->type) {
+	case B43_PHYTYPE_N:
+		b43_nphy_radio_turn_off(dev);
+		break;
+	case B43_PHYTYPE_A:
 		b43_radio_write16(dev, 0x0004, 0x00FF);
 		b43_radio_write16(dev, 0x0005, 0x00FB);
 		b43_phy_write(dev, 0x0010, b43_phy_read(dev, 0x0010) | 0x0008);
 		b43_phy_write(dev, 0x0011, b43_phy_read(dev, 0x0011) | 0x0008);
-	}
-	if (phy->type == B43_PHYTYPE_G && dev->dev->id.revision >= 5) {
+		break;
+	case B43_PHYTYPE_G: {
 		u16 rfover, rfoverval;
 
 		rfover = b43_phy_read(dev, B43_PHY_RFOVER);
@@ -4016,7 +4078,10 @@ void b43_radio_turn_off(struct b43_wldev *dev, bool force)
 		}
 		b43_phy_write(dev, B43_PHY_RFOVER, rfover | 0x008C);
 		b43_phy_write(dev, B43_PHY_RFOVERVAL, rfoverval & 0xFF73);
-	} else
-		b43_phy_write(dev, 0x0015, 0xAA00);
+		break;
+	}
+	default:
+		B43_WARN_ON(1);
+	}
 	phy->radio_on = 0;
 }

drivers/net/wireless/b43/phy.h

@@ -204,8 +204,18 @@ enum {
 void b43_phy_lock(struct b43_wldev *dev);
 void b43_phy_unlock(struct b43_wldev *dev);
 
+
+/* Read a value from a PHY register */
 u16 b43_phy_read(struct b43_wldev *dev, u16 offset);
+/* Write a value to a PHY register */
 void b43_phy_write(struct b43_wldev *dev, u16 offset, u16 val);
+/* Mask a PHY register with a mask */
+void b43_phy_mask(struct b43_wldev *dev, u16 offset, u16 mask);
+/* OR a PHY register with a bitmap */
+void b43_phy_set(struct b43_wldev *dev, u16 offset, u16 set);
+/* Mask and OR a PHY register with a mask and bitmap */
+void b43_phy_maskset(struct b43_wldev *dev, u16 offset, u16 mask, u16 set);
+
 
 int b43_phy_init_tssi2dbm_table(struct b43_wldev *dev);
 
@@ -269,8 +279,18 @@ extern const u8 b43_radio_channel_codes_bg[];
 void b43_radio_lock(struct b43_wldev *dev);
 void b43_radio_unlock(struct b43_wldev *dev);
 
+
+/* Read a value from a 16bit radio register */
 u16 b43_radio_read16(struct b43_wldev *dev, u16 offset);
+/* Write a value to a 16bit radio register */
 void b43_radio_write16(struct b43_wldev *dev, u16 offset, u16 val);
+/* Mask a 16bit radio register with a mask */
+void b43_radio_mask(struct b43_wldev *dev, u16 offset, u16 mask);
+/* OR a 16bit radio register with a bitmap */
+void b43_radio_set(struct b43_wldev *dev, u16 offset, u16 set);
+/* Mask and OR a PHY register with a mask and bitmap */
+void b43_radio_maskset(struct b43_wldev *dev, u16 offset, u16 mask, u16 set);
+
 
 u16 b43_radio_init2050(struct b43_wldev *dev);
 void b43_radio_init2060(struct b43_wldev *dev);

drivers/net/wireless/b43/tables_nphy.h

+#ifndef B43_TABLES_NPHY_H_
+#define B43_TABLES_NPHY_H_
+
+#include <linux/types.h>
+
+
+struct b43_wldev;
+
+/* Upload the default register value table.
+ * If "ghz5" is true, we upload the 5Ghz table. Otherwise the 2.4Ghz
+ * table is uploaded. If "ignore_uploadflag" is true, we upload any value
+ * and ignore the "UPLOAD" flag. */
+void b2055_upload_inittab(struct b43_wldev *dev,
+			  bool ghz5, bool ignore_uploadflag);
+
+
+#endif /* B43_TABLES_NPHY_H_ */