Add rtl8180 wireless driver

This patch adds a mac80211 based wireless driver for the rtl8180 and
rtl8185 PCI wireless cards.  Also included are some rtl8187 changes
required due to the relationship between that driver and this one.

Michael Wu is primarily responsible for the initial driver and rtl8185
support.  Andreas Merello provided the additional rtl8180 support.

Thanks to Jukka Ruohonen for the donating a rtl8185 card! It was very
helpful for the rtl8225z2 code.

The Signed-off-by information below is collected from the individual
patches submitted to wireless-2.6 before merging this driver upstream.

Signed-off-by: Andrea Merello <andreamrl@tiscali.it>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 179 insertions, 0 deletions

diff --git a/drivers/net/wireless/rtl8180_grf5101.c b/drivers/net/wireless/rtl8180_grf5101.c
new file mode 100644
index 000000000000..8293e19c4c59
--- /dev/null
+++ b/drivers/net/wireless/rtl8180_grf5101.c
@@ -0,0 +1,179 @@
+
+/*
+ * Radio tuning for GCT GRF5101 on RTL8180
+ *
+ * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
+ *
+ * Code from the BSD driver and the rtl8181 project have been
+ * very useful to understand certain things
+ *
+ * I want to thanks the Authors of such projects and the Ndiswrapper
+ * project Authors.
+ *
+ * A special Big Thanks also is for all people who donated me cards,
+ * making possible the creation of the original rtl8180 driver
+ * from which this code is derived!
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <net/mac80211.h>
+
+#include "rtl8180.h"
+#include "rtl8180_grf5101.h"
+
+static const int grf5101_encode[] = {
+	0x0, 0x8, 0x4, 0xC,
+	0x2, 0xA, 0x6, 0xE,
+	0x1, 0x9, 0x5, 0xD,
+	0x3, 0xB, 0x7, 0xF
+};
+
+static void write_grf5101(struct ieee80211_hw *dev, u8 addr, u32 data)
+{
+	struct rtl8180_priv *priv = dev->priv;
+	u32 phy_config;
+
+	phy_config =  grf5101_encode[(data >> 8) & 0xF];
+	phy_config |= grf5101_encode[(data >> 4) & 0xF] << 4;
+	phy_config |= grf5101_encode[data & 0xF] << 8;
+	phy_config |= grf5101_encode[(addr >> 1) & 0xF] << 12;
+	phy_config |= (addr & 1) << 16;
+	phy_config |= grf5101_encode[(data & 0xf000) >> 12] << 24;
+
+	/* MAC will bang bits to the chip */
+	phy_config |= 0x90000000;
+
+	rtl818x_iowrite32(priv,
+		(__le32 __iomem *) &priv->map->RFPinsOutput, phy_config);
+
+	msleep(3);
+}
+
+static void grf5101_write_phy_antenna(struct ieee80211_hw *dev, short chan)
+{
+	struct rtl8180_priv *priv = dev->priv;
+	u8 ant = GRF5101_ANTENNA;
+
+	if (priv->rfparam & RF_PARAM_ANTBDEFAULT)
+		ant |= BB_ANTENNA_B;
+
+	if (chan == 14)
+		ant |= BB_ANTATTEN_CHAN14;
+
+	rtl8180_write_phy(dev, 0x10, ant);
+}
+
+static void grf5101_rf_set_channel(struct ieee80211_hw *dev,
+				   struct ieee80211_conf *conf)
+{
+	struct rtl8180_priv *priv = dev->priv;
+	u32 txpw = priv->channels[conf->channel - 1].val & 0xFF;
+	u32 chan = conf->channel - 1;
+
+	/* set TX power */
+	write_grf5101(dev, 0x15, 0x0);
+	write_grf5101(dev, 0x06, txpw);
+	write_grf5101(dev, 0x15, 0x10);
+	write_grf5101(dev, 0x15, 0x0);
+
+	/* set frequency */
+	write_grf5101(dev, 0x07, 0x0);
+	write_grf5101(dev, 0x0B, chan);
+	write_grf5101(dev, 0x07, 0x1000);
+
+	grf5101_write_phy_antenna(dev, chan);
+}
+
+static void grf5101_rf_stop(struct ieee80211_hw *dev)
+{
+	struct rtl8180_priv *priv = dev->priv;
+	u32 anaparam;
+
+	anaparam = priv->anaparam;
+	anaparam &= 0x000fffff;
+	anaparam |= 0x3f900000;
+	rtl8180_set_anaparam(priv, anaparam);
+
+	write_grf5101(dev, 0x07, 0x0);
+	write_grf5101(dev, 0x1f, 0x45);
+	write_grf5101(dev, 0x1f, 0x5);
+	write_grf5101(dev, 0x00, 0x8e4);
+}
+
+static void grf5101_rf_init(struct ieee80211_hw *dev)
+{
+	struct rtl8180_priv *priv = dev->priv;
+
+	rtl8180_set_anaparam(priv, priv->anaparam);
+
+	write_grf5101(dev, 0x1f, 0x0);
+	write_grf5101(dev, 0x1f, 0x0);
+	write_grf5101(dev, 0x1f, 0x40);
+	write_grf5101(dev, 0x1f, 0x60);
+	write_grf5101(dev, 0x1f, 0x61);
+	write_grf5101(dev, 0x1f, 0x61);
+	write_grf5101(dev, 0x00, 0xae4);
+	write_grf5101(dev, 0x1f, 0x1);
+	write_grf5101(dev, 0x1f, 0x41);
+	write_grf5101(dev, 0x1f, 0x61);
+
+	write_grf5101(dev, 0x01, 0x1a23);
+	write_grf5101(dev, 0x02, 0x4971);
+	write_grf5101(dev, 0x03, 0x41de);
+	write_grf5101(dev, 0x04, 0x2d80);
+	write_grf5101(dev, 0x05, 0x68ff);	/* 0x61ff original value */
+	write_grf5101(dev, 0x06, 0x0);
+	write_grf5101(dev, 0x07, 0x0);
+	write_grf5101(dev, 0x08, 0x7533);
+	write_grf5101(dev, 0x09, 0xc401);
+	write_grf5101(dev, 0x0a, 0x0);
+	write_grf5101(dev, 0x0c, 0x1c7);
+	write_grf5101(dev, 0x0d, 0x29d3);
+	write_grf5101(dev, 0x0e, 0x2e8);
+	write_grf5101(dev, 0x10, 0x192);
+	write_grf5101(dev, 0x11, 0x248);
+	write_grf5101(dev, 0x12, 0x0);
+	write_grf5101(dev, 0x13, 0x20c4);
+	write_grf5101(dev, 0x14, 0xf4fc);
+	write_grf5101(dev, 0x15, 0x0);
+	write_grf5101(dev, 0x16, 0x1500);
+
+	write_grf5101(dev, 0x07, 0x1000);
+
+	/* baseband configuration */
+	rtl8180_write_phy(dev, 0, 0xa8);
+	rtl8180_write_phy(dev, 3, 0x0);
+	rtl8180_write_phy(dev, 4, 0xc0);
+	rtl8180_write_phy(dev, 5, 0x90);
+	rtl8180_write_phy(dev, 6, 0x1e);
+	rtl8180_write_phy(dev, 7, 0x64);
+
+	grf5101_write_phy_antenna(dev, 1);
+
+	rtl8180_write_phy(dev, 0x11, 0x88);
+
+	if (rtl818x_ioread8(priv, &priv->map->CONFIG2) &
+	    RTL818X_CONFIG2_ANTENNA_DIV)
+		rtl8180_write_phy(dev, 0x12, 0xc0); /* enable ant diversity */
+	else
+		rtl8180_write_phy(dev, 0x12, 0x40); /* disable ant diversity */
+
+	rtl8180_write_phy(dev, 0x13, 0x90 | priv->csthreshold);
+
+	rtl8180_write_phy(dev, 0x19, 0x0);
+	rtl8180_write_phy(dev, 0x1a, 0xa0);
+	rtl8180_write_phy(dev, 0x1b, 0x44);
+}
+
+const struct rtl818x_rf_ops grf5101_rf_ops = {
+	.name		= "GCT",
+	.init		= grf5101_rf_init,
+	.stop		= grf5101_rf_stop,
+	.set_chan	= grf5101_rf_set_channel
+};