qemu/roms/ipxe/src/drivers/net/rtl818x/rtl8180_grf5101.c

   1 /*
   2  * Radio tuning for GCT GRF5101 on RTL8180
   3  *
   4  * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
   5  *
   6  * Modified slightly for iPXE, 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 <ipxe/pci.h>
  25 #include <ipxe/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 };