/* * Radio tuning for Philips SA2400 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_sa2400.h" static const u32 sa2400_chan[] = { 0x00096c, /* ch1 */ 0x080970, 0x100974, 0x180978, 0x000980, 0x080984, 0x100988, 0x18098c, 0x000994, 0x080998, 0x10099c, 0x1809a0, 0x0009a8, 0x0009b4, /* ch 14 */ }; static void write_sa2400(struct ieee80211_hw *dev, u8 addr, u32 data) { struct rtl8180_priv *priv = dev->priv; u32 phy_config; /* MAC will bang bits to the sa2400. sw 3-wire is NOT used */ phy_config = 0xb0000000; phy_config |= ((u32)(addr & 0xf)) << 24; phy_config |= data & 0xffffff; rtl818x_iowrite32(priv, (__le32 __iomem *) &priv->map->RFPinsOutput, phy_config); msleep(3); } static void sa2400_write_phy_antenna(struct ieee80211_hw *dev, short chan) { struct rtl8180_priv *priv = dev->priv; u8 ant = SA2400_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 sa2400_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 = sa2400_chan[channel - 1]; write_sa2400(dev, 7, txpw); sa2400_write_phy_antenna(dev, channel); write_sa2400(dev, 0, chan); write_sa2400(dev, 1, 0xbb50); write_sa2400(dev, 2, 0x80); write_sa2400(dev, 3, 0); } static void sa2400_rf_stop(struct ieee80211_hw *dev) { write_sa2400(dev, 4, 0); } static void sa2400_rf_init(struct ieee80211_hw *dev) { struct rtl8180_priv *priv = dev->priv; u32 anaparam, txconf; u8 firdac; int analogphy = priv->rfparam & RF_PARAM_ANALOGPHY; anaparam = priv->anaparam; anaparam &= ~(1 << ANAPARAM_TXDACOFF_SHIFT); anaparam &= ~ANAPARAM_PWR1_MASK; anaparam &= ~ANAPARAM_PWR0_MASK; if (analogphy) { anaparam |= SA2400_ANA_ANAPARAM_PWR1_ON << ANAPARAM_PWR1_SHIFT; firdac = 0; } else { anaparam |= (SA2400_DIG_ANAPARAM_PWR1_ON << ANAPARAM_PWR1_SHIFT); anaparam |= (SA2400_ANAPARAM_PWR0_ON << ANAPARAM_PWR0_SHIFT); firdac = 1 << SA2400_REG4_FIRDAC_SHIFT; } rtl8180_set_anaparam(priv, anaparam); write_sa2400(dev, 0, sa2400_chan[0]); write_sa2400(dev, 1, 0xbb50); write_sa2400(dev, 2, 0x80); write_sa2400(dev, 3, 0); write_sa2400(dev, 4, 0x19340 | firdac); write_sa2400(dev, 5, 0x1dfb | (SA2400_MAX_SENS - 54) << 15); write_sa2400(dev, 4, 0x19348 | firdac); /* calibrate VCO */ if (!analogphy) write_sa2400(dev, 4, 0x1938c); /*???*/ write_sa2400(dev, 4, 0x19340 | firdac); write_sa2400(dev, 0, sa2400_chan[0]); write_sa2400(dev, 1, 0xbb50); write_sa2400(dev, 2, 0x80); write_sa2400(dev, 3, 0); write_sa2400(dev, 4, 0x19344 | firdac); /* calibrate filter */ /* new from rtl8180 embedded driver (rtl8181 project) */ write_sa2400(dev, 6, 0x13ff | (1 << 23)); /* MANRX */ write_sa2400(dev, 8, 0); /* VCO */ if (analogphy) { rtl8180_set_anaparam(priv, anaparam | (1 << ANAPARAM_TXDACOFF_SHIFT)); txconf = rtl818x_ioread32(priv, &priv->map->TX_CONF); rtl818x_iowrite32(priv, &priv->map->TX_CONF, txconf | RTL818X_TX_CONF_LOOPBACK_CONT); write_sa2400(dev, 4, 0x19341); /* calibrates DC */ /* a 5us sleep is required here, * we rely on the 3ms delay introduced in write_sa2400 */ write_sa2400(dev, 4, 0x19345); /* a 20us sleep is required here, * we rely on the 3ms delay introduced in write_sa2400 */ rtl818x_iowrite32(priv, &priv->map->TX_CONF, txconf); rtl8180_set_anaparam(priv, anaparam); } /* end new code */ write_sa2400(dev, 4, 0x19341 | firdac); /* RTX MODE */ /* baseband configuration */ rtl8180_write_phy(dev, 0, 0x98); rtl8180_write_phy(dev, 3, 0x38); rtl8180_write_phy(dev, 4, 0xe0); rtl8180_write_phy(dev, 5, 0x90); rtl8180_write_phy(dev, 6, 0x1a); rtl8180_write_phy(dev, 7, 0x64); sa2400_write_phy_antenna(dev, 1); rtl8180_write_phy(dev, 0x11, 0x80); if (rtl818x_ioread8(priv, &priv->map->CONFIG2) & RTL818X_CONFIG2_ANTENNA_DIV) rtl8180_write_phy(dev, 0x12, 0xc7); /* enable ant diversity */ else rtl8180_write_phy(dev, 0x12, 0x47); /* disable ant diversity */ rtl8180_write_phy(dev, 0x13, 0x90 | priv->csthreshold); rtl8180_write_phy(dev, 0x19, 0x0); rtl8180_write_phy(dev, 0x1a, 0xa0); } const struct rtl818x_rf_ops sa2400_rf_ops = { .name = "Philips", .init = sa2400_rf_init, .stop = sa2400_rf_stop, .set_chan = sa2400_rf_set_channel };