Michael Wu | f653211 | 2007-10-14 14:43:16 -0400 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Radio tuning for GCT GRF5101 on RTL8180 |
| 4 | * |
| 5 | * Copyright 2007 Andrea Merello <andreamrl@tiscali.it> |
| 6 | * |
| 7 | * Code from the BSD driver and the rtl8181 project have been |
| 8 | * very useful to understand certain things |
| 9 | * |
| 10 | * I want to thanks the Authors of such projects and the Ndiswrapper |
| 11 | * project Authors. |
| 12 | * |
| 13 | * A special Big Thanks also is for all people who donated me cards, |
| 14 | * making possible the creation of the original rtl8180 driver |
| 15 | * from which this code is derived! |
| 16 | * |
| 17 | * This program is free software; you can redistribute it and/or modify |
| 18 | * it under the terms of the GNU General Public License version 2 as |
| 19 | * published by the Free Software Foundation. |
| 20 | */ |
| 21 | |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/pci.h> |
| 24 | #include <linux/delay.h> |
| 25 | #include <net/mac80211.h> |
| 26 | |
| 27 | #include "rtl8180.h" |
| 28 | #include "rtl8180_grf5101.h" |
| 29 | |
| 30 | static const int grf5101_encode[] = { |
| 31 | 0x0, 0x8, 0x4, 0xC, |
| 32 | 0x2, 0xA, 0x6, 0xE, |
| 33 | 0x1, 0x9, 0x5, 0xD, |
| 34 | 0x3, 0xB, 0x7, 0xF |
| 35 | }; |
| 36 | |
| 37 | static void write_grf5101(struct ieee80211_hw *dev, u8 addr, u32 data) |
| 38 | { |
| 39 | struct rtl8180_priv *priv = dev->priv; |
| 40 | u32 phy_config; |
| 41 | |
| 42 | phy_config = grf5101_encode[(data >> 8) & 0xF]; |
| 43 | phy_config |= grf5101_encode[(data >> 4) & 0xF] << 4; |
| 44 | phy_config |= grf5101_encode[data & 0xF] << 8; |
| 45 | phy_config |= grf5101_encode[(addr >> 1) & 0xF] << 12; |
| 46 | phy_config |= (addr & 1) << 16; |
| 47 | phy_config |= grf5101_encode[(data & 0xf000) >> 12] << 24; |
| 48 | |
| 49 | /* MAC will bang bits to the chip */ |
| 50 | phy_config |= 0x90000000; |
| 51 | |
| 52 | rtl818x_iowrite32(priv, |
| 53 | (__le32 __iomem *) &priv->map->RFPinsOutput, phy_config); |
| 54 | |
| 55 | msleep(3); |
| 56 | } |
| 57 | |
| 58 | static void grf5101_write_phy_antenna(struct ieee80211_hw *dev, short chan) |
| 59 | { |
| 60 | struct rtl8180_priv *priv = dev->priv; |
| 61 | u8 ant = GRF5101_ANTENNA; |
| 62 | |
| 63 | if (priv->rfparam & RF_PARAM_ANTBDEFAULT) |
| 64 | ant |= BB_ANTENNA_B; |
| 65 | |
| 66 | if (chan == 14) |
| 67 | ant |= BB_ANTATTEN_CHAN14; |
| 68 | |
| 69 | rtl8180_write_phy(dev, 0x10, ant); |
| 70 | } |
| 71 | |
| 72 | static void grf5101_rf_set_channel(struct ieee80211_hw *dev, |
| 73 | struct ieee80211_conf *conf) |
| 74 | { |
| 75 | struct rtl8180_priv *priv = dev->priv; |
| 76 | u32 txpw = priv->channels[conf->channel - 1].val & 0xFF; |
| 77 | u32 chan = conf->channel - 1; |
| 78 | |
| 79 | /* set TX power */ |
| 80 | write_grf5101(dev, 0x15, 0x0); |
| 81 | write_grf5101(dev, 0x06, txpw); |
| 82 | write_grf5101(dev, 0x15, 0x10); |
| 83 | write_grf5101(dev, 0x15, 0x0); |
| 84 | |
| 85 | /* set frequency */ |
| 86 | write_grf5101(dev, 0x07, 0x0); |
| 87 | write_grf5101(dev, 0x0B, chan); |
| 88 | write_grf5101(dev, 0x07, 0x1000); |
| 89 | |
| 90 | grf5101_write_phy_antenna(dev, chan); |
| 91 | } |
| 92 | |
| 93 | static void grf5101_rf_stop(struct ieee80211_hw *dev) |
| 94 | { |
| 95 | struct rtl8180_priv *priv = dev->priv; |
| 96 | u32 anaparam; |
| 97 | |
| 98 | anaparam = priv->anaparam; |
| 99 | anaparam &= 0x000fffff; |
| 100 | anaparam |= 0x3f900000; |
| 101 | rtl8180_set_anaparam(priv, anaparam); |
| 102 | |
| 103 | write_grf5101(dev, 0x07, 0x0); |
| 104 | write_grf5101(dev, 0x1f, 0x45); |
| 105 | write_grf5101(dev, 0x1f, 0x5); |
| 106 | write_grf5101(dev, 0x00, 0x8e4); |
| 107 | } |
| 108 | |
| 109 | static void grf5101_rf_init(struct ieee80211_hw *dev) |
| 110 | { |
| 111 | struct rtl8180_priv *priv = dev->priv; |
| 112 | |
| 113 | rtl8180_set_anaparam(priv, priv->anaparam); |
| 114 | |
| 115 | write_grf5101(dev, 0x1f, 0x0); |
| 116 | write_grf5101(dev, 0x1f, 0x0); |
| 117 | write_grf5101(dev, 0x1f, 0x40); |
| 118 | write_grf5101(dev, 0x1f, 0x60); |
| 119 | write_grf5101(dev, 0x1f, 0x61); |
| 120 | write_grf5101(dev, 0x1f, 0x61); |
| 121 | write_grf5101(dev, 0x00, 0xae4); |
| 122 | write_grf5101(dev, 0x1f, 0x1); |
| 123 | write_grf5101(dev, 0x1f, 0x41); |
| 124 | write_grf5101(dev, 0x1f, 0x61); |
| 125 | |
| 126 | write_grf5101(dev, 0x01, 0x1a23); |
| 127 | write_grf5101(dev, 0x02, 0x4971); |
| 128 | write_grf5101(dev, 0x03, 0x41de); |
| 129 | write_grf5101(dev, 0x04, 0x2d80); |
| 130 | write_grf5101(dev, 0x05, 0x68ff); /* 0x61ff original value */ |
| 131 | write_grf5101(dev, 0x06, 0x0); |
| 132 | write_grf5101(dev, 0x07, 0x0); |
| 133 | write_grf5101(dev, 0x08, 0x7533); |
| 134 | write_grf5101(dev, 0x09, 0xc401); |
| 135 | write_grf5101(dev, 0x0a, 0x0); |
| 136 | write_grf5101(dev, 0x0c, 0x1c7); |
| 137 | write_grf5101(dev, 0x0d, 0x29d3); |
| 138 | write_grf5101(dev, 0x0e, 0x2e8); |
| 139 | write_grf5101(dev, 0x10, 0x192); |
| 140 | write_grf5101(dev, 0x11, 0x248); |
| 141 | write_grf5101(dev, 0x12, 0x0); |
| 142 | write_grf5101(dev, 0x13, 0x20c4); |
| 143 | write_grf5101(dev, 0x14, 0xf4fc); |
| 144 | write_grf5101(dev, 0x15, 0x0); |
| 145 | write_grf5101(dev, 0x16, 0x1500); |
| 146 | |
| 147 | write_grf5101(dev, 0x07, 0x1000); |
| 148 | |
| 149 | /* baseband configuration */ |
| 150 | rtl8180_write_phy(dev, 0, 0xa8); |
| 151 | rtl8180_write_phy(dev, 3, 0x0); |
| 152 | rtl8180_write_phy(dev, 4, 0xc0); |
| 153 | rtl8180_write_phy(dev, 5, 0x90); |
| 154 | rtl8180_write_phy(dev, 6, 0x1e); |
| 155 | rtl8180_write_phy(dev, 7, 0x64); |
| 156 | |
| 157 | grf5101_write_phy_antenna(dev, 1); |
| 158 | |
| 159 | rtl8180_write_phy(dev, 0x11, 0x88); |
| 160 | |
| 161 | if (rtl818x_ioread8(priv, &priv->map->CONFIG2) & |
| 162 | RTL818X_CONFIG2_ANTENNA_DIV) |
| 163 | rtl8180_write_phy(dev, 0x12, 0xc0); /* enable ant diversity */ |
| 164 | else |
| 165 | rtl8180_write_phy(dev, 0x12, 0x40); /* disable ant diversity */ |
| 166 | |
| 167 | rtl8180_write_phy(dev, 0x13, 0x90 | priv->csthreshold); |
| 168 | |
| 169 | rtl8180_write_phy(dev, 0x19, 0x0); |
| 170 | rtl8180_write_phy(dev, 0x1a, 0xa0); |
| 171 | rtl8180_write_phy(dev, 0x1b, 0x44); |
| 172 | } |
| 173 | |
| 174 | const struct rtl818x_rf_ops grf5101_rf_ops = { |
| 175 | .name = "GCT", |
| 176 | .init = grf5101_rf_init, |
| 177 | .stop = grf5101_rf_stop, |
| 178 | .set_chan = grf5101_rf_set_channel |
| 179 | }; |