1 /* 2 * Radio tuning for GCT GRF5101 on RTL8180 3 * 4 * Copyright 2007 Andrea Merello <andreamrl (at) tiscali.it> 5 * 6 * Modified slightly for gPXE, June 2009 by Joshua Oreman. 7 * 8 * Code from the BSD driver and the rtl8181 project have been 9 * very useful to understand certain things 10 * 11 * I want to thanks the Authors of such projects and the Ndiswrapper 12 * project Authors. 13 * 14 * A special Big Thanks also is for all people who donated me cards, 15 * making possible the creation of the original rtl8180 driver 16 * from which this code is derived! 17 * 18 * This program is free software; you can redistribute it and/or modify 19 * it under the terms of the GNU General Public License version 2 as 20 * published by the Free Software Foundation. 21 */ 22 23 #include <unistd.h> 24 #include <gpxe/pci.h> 25 #include <gpxe/net80211.h> 26 27 #include "rtl818x.h" 28 29 FILE_LICENCE(GPL2_ONLY); 30 31 #define GRF5101_ANTENNA 0xA3 32 33 static const int grf5101_encode[] = { 34 0x0, 0x8, 0x4, 0xC, 35 0x2, 0xA, 0x6, 0xE, 36 0x1, 0x9, 0x5, 0xD, 37 0x3, 0xB, 0x7, 0xF 38 }; 39 40 static void write_grf5101(struct net80211_device *dev, u8 addr, u32 data) 41 { 42 struct rtl818x_priv *priv = dev->priv; 43 u32 phy_config; 44 45 phy_config = grf5101_encode[(data >> 8) & 0xF]; 46 phy_config |= grf5101_encode[(data >> 4) & 0xF] << 4; 47 phy_config |= grf5101_encode[data & 0xF] << 8; 48 phy_config |= grf5101_encode[(addr >> 1) & 0xF] << 12; 49 phy_config |= (addr & 1) << 16; 50 phy_config |= grf5101_encode[(data & 0xf000) >> 12] << 24; 51 52 /* MAC will bang bits to the chip */ 53 phy_config |= 0x90000000; 54 55 /* This was originally a 32-bit write to a typecast 56 RFPinsOutput, but gcc complained about aliasing rules. -JBO */ 57 rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, phy_config & 0xffff); 58 rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, phy_config >> 16); 59 60 mdelay(3); 61 } 62 63 static void grf5101_write_phy_antenna(struct net80211_device *dev, short chan) 64 { 65 struct rtl818x_priv *priv = dev->priv; 66 u8 ant = GRF5101_ANTENNA; 67 68 if (priv->rfparam & RF_PARAM_ANTBDEFAULT) 69 ant |= BB_ANTENNA_B; 70 71 if (chan == 14) 72 ant |= BB_ANTATTEN_CHAN14; 73 74 rtl818x_write_phy(dev, 0x10, ant); 75 } 76 77 static void grf5101_rf_set_channel(struct net80211_device *dev, 78 struct net80211_channel *channelp) 79 { 80 struct rtl818x_priv *priv = dev->priv; 81 int channel = channelp->channel_nr; 82 u32 txpw = priv->txpower[channel - 1] & 0xFF; 83 u32 chan = channel - 1; 84 85 /* set TX power */ 86 write_grf5101(dev, 0x15, 0x0); 87 write_grf5101(dev, 0x06, txpw); 88 write_grf5101(dev, 0x15, 0x10); 89 write_grf5101(dev, 0x15, 0x0); 90 91 /* set frequency */ 92 write_grf5101(dev, 0x07, 0x0); 93 write_grf5101(dev, 0x0B, chan); 94 write_grf5101(dev, 0x07, 0x1000); 95 96 grf5101_write_phy_antenna(dev, channel); 97 } 98 99 static void grf5101_rf_stop(struct net80211_device *dev) 100 { 101 struct rtl818x_priv *priv = dev->priv; 102 u32 anaparam; 103 104 anaparam = priv->anaparam; 105 anaparam &= 0x000fffff; 106 anaparam |= 0x3f900000; 107 rtl818x_set_anaparam(priv, anaparam); 108 109 write_grf5101(dev, 0x07, 0x0); 110 write_grf5101(dev, 0x1f, 0x45); 111 write_grf5101(dev, 0x1f, 0x5); 112 write_grf5101(dev, 0x00, 0x8e4); 113 } 114 115 static void grf5101_rf_init(struct net80211_device *dev) 116 { 117 struct rtl818x_priv *priv = dev->priv; 118 119 rtl818x_set_anaparam(priv, priv->anaparam); 120 121 write_grf5101(dev, 0x1f, 0x0); 122 write_grf5101(dev, 0x1f, 0x0); 123 write_grf5101(dev, 0x1f, 0x40); 124 write_grf5101(dev, 0x1f, 0x60); 125 write_grf5101(dev, 0x1f, 0x61); 126 write_grf5101(dev, 0x1f, 0x61); 127 write_grf5101(dev, 0x00, 0xae4); 128 write_grf5101(dev, 0x1f, 0x1); 129 write_grf5101(dev, 0x1f, 0x41); 130 write_grf5101(dev, 0x1f, 0x61); 131 132 write_grf5101(dev, 0x01, 0x1a23); 133 write_grf5101(dev, 0x02, 0x4971); 134 write_grf5101(dev, 0x03, 0x41de); 135 write_grf5101(dev, 0x04, 0x2d80); 136 write_grf5101(dev, 0x05, 0x68ff); /* 0x61ff original value */ 137 write_grf5101(dev, 0x06, 0x0); 138 write_grf5101(dev, 0x07, 0x0); 139 write_grf5101(dev, 0x08, 0x7533); 140 write_grf5101(dev, 0x09, 0xc401); 141 write_grf5101(dev, 0x0a, 0x0); 142 write_grf5101(dev, 0x0c, 0x1c7); 143 write_grf5101(dev, 0x0d, 0x29d3); 144 write_grf5101(dev, 0x0e, 0x2e8); 145 write_grf5101(dev, 0x10, 0x192); 146 write_grf5101(dev, 0x11, 0x248); 147 write_grf5101(dev, 0x12, 0x0); 148 write_grf5101(dev, 0x13, 0x20c4); 149 write_grf5101(dev, 0x14, 0xf4fc); 150 write_grf5101(dev, 0x15, 0x0); 151 write_grf5101(dev, 0x16, 0x1500); 152 153 write_grf5101(dev, 0x07, 0x1000); 154 155 /* baseband configuration */ 156 rtl818x_write_phy(dev, 0, 0xa8); 157 rtl818x_write_phy(dev, 3, 0x0); 158 rtl818x_write_phy(dev, 4, 0xc0); 159 rtl818x_write_phy(dev, 5, 0x90); 160 rtl818x_write_phy(dev, 6, 0x1e); 161 rtl818x_write_phy(dev, 7, 0x64); 162 163 grf5101_write_phy_antenna(dev, 1); 164 165 rtl818x_write_phy(dev, 0x11, 0x88); 166 167 if (rtl818x_ioread8(priv, &priv->map->CONFIG2) & 168 RTL818X_CONFIG2_ANTENNA_DIV) 169 rtl818x_write_phy(dev, 0x12, 0xc0); /* enable ant diversity */ 170 else 171 rtl818x_write_phy(dev, 0x12, 0x40); /* disable ant diversity */ 172 173 rtl818x_write_phy(dev, 0x13, 0x90 | priv->csthreshold); 174 175 rtl818x_write_phy(dev, 0x19, 0x0); 176 rtl818x_write_phy(dev, 0x1a, 0xa0); 177 rtl818x_write_phy(dev, 0x1b, 0x44); 178 } 179 180 struct rtl818x_rf_ops grf5101_rf_ops __rtl818x_rf_driver = { 181 .name = "GCT GRF5101", 182 .id = 5, 183 .init = grf5101_rf_init, 184 .stop = grf5101_rf_stop, 185 .set_chan = grf5101_rf_set_channel 186 }; 187