--- /dev/null
+
+/*
+ * 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 "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 u8 grf5101_rf_calc_rssi(u8 agc, u8 sq)
+{
+ if (agc > 60)
+ return 65;
+
+ /* TODO(?): just return agc (or agc + 5) to avoid mult / div */
+ return 65 * agc / 60;
+}
+
+static void grf5101_rf_set_channel(struct ieee80211_hw *dev,
+ struct ieee80211_conf *conf)
+{
+ struct rtl8180_priv *priv = dev->priv;
+ int channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
+ u32 txpw = priv->channels[channel - 1].hw_value & 0xFF;
+ u32 chan = 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, channel);
+}
+
+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,
+ .calc_rssi = grf5101_rf_calc_rssi,
+};
projects / mv-sheeva.git / blobdiff