drivers/staging/rtl8187se/r8180_rtl8225.c

   1 /*
   2   This is part of the rtl8180-sa2400 driver
   3   released under the GPL (See file COPYING for details).
   4   Copyright (c) 2005 Andrea Merello <andreamrl@tiscali.it>
   5
   6   This files contains programming code for the rtl8225
   7   radio frontend.
   8
   9   *Many* thanks to Realtek Corp. for their great support!
  10
  11 */
  12
  13
  14
  15 #include "r8180_hw.h"
  16 #include "r8180_rtl8225.h"
  17
  18
  19 u8 rtl8225_gain[] = {
  20         0x23, 0x88, 0x7c, 0xa5, /* -82dBm */
  21         0x23, 0x88, 0x7c, 0xb5, /* -82dBm */
  22         0x23, 0x88, 0x7c, 0xc5, /* -82dBm */
  23         0x33, 0x80, 0x79, 0xc5, /* -78dBm */
  24         0x43, 0x78, 0x76, 0xc5, /* -74dBm */
  25         0x53, 0x60, 0x73, 0xc5, /* -70dBm */
  26         0x63, 0x58, 0x70, 0xc5, /* -66dBm */
  27 };
  28
  29 u32 rtl8225_chan[] = {
  30         0,
  31         0x0080, 0x0100, 0x0180, 0x0200, 0x0280, 0x0300, 0x0380,
  32         0x0400, 0x0480, 0x0500, 0x0580, 0x0600, 0x0680, 0x074A,
  33 };
  34
  35 u16 rtl8225bcd_rxgain[] = {
  36         0x0400, 0x0401, 0x0402, 0x0403, 0x0404, 0x0405, 0x0408, 0x0409,
  37         0x040a, 0x040b, 0x0502, 0x0503, 0x0504, 0x0505, 0x0540, 0x0541,
  38         0x0542, 0x0543, 0x0544, 0x0545, 0x0580, 0x0581, 0x0582, 0x0583,
  39         0x0584, 0x0585, 0x0588, 0x0589, 0x058a, 0x058b, 0x0643, 0x0644,
  40         0x0645, 0x0680, 0x0681, 0x0682, 0x0683, 0x0684, 0x0685, 0x0688,
  41         0x0689, 0x068a, 0x068b, 0x068c, 0x0742, 0x0743, 0x0744, 0x0745,
  42         0x0780, 0x0781, 0x0782, 0x0783, 0x0784, 0x0785, 0x0788, 0x0789,
  43         0x078a, 0x078b, 0x078c, 0x078d, 0x0790, 0x0791, 0x0792, 0x0793,
  44         0x0794, 0x0795, 0x0798, 0x0799, 0x079a, 0x079b, 0x079c, 0x079d,
  45         0x07a0, 0x07a1, 0x07a2, 0x07a3, 0x07a4, 0x07a5, 0x07a8, 0x07a9,
  46         0x07aa, 0x07ab, 0x07ac, 0x07ad, 0x07b0, 0x07b1, 0x07b2, 0x07b3,
  47         0x07b4, 0x07b5, 0x07b8, 0x07b9, 0x07ba, 0x07bb, 0x07bb
  48
  49 };
  50
  51 u8 rtl8225_agc[] = {
  52         0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e,
  53         0x9d, 0x9c, 0x9b, 0x9a, 0x99, 0x98, 0x97, 0x96,
  54         0x95, 0x94, 0x93, 0x92, 0x91, 0x90, 0x8f, 0x8e,
  55         0x8d, 0x8c, 0x8b, 0x8a, 0x89, 0x88, 0x87, 0x86,
  56         0x85, 0x84, 0x83, 0x82, 0x81, 0x80, 0x3f, 0x3e,
  57         0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38, 0x37, 0x36,
  58         0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x2f, 0x2e,
  59         0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26,
  60         0x25, 0x24, 0x23, 0x22, 0x21, 0x20, 0x1f, 0x1e,
  61         0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x17, 0x16,
  62         0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f, 0x0e,
  63         0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06,
  64         0x05, 0x04, 0x03, 0x02, 0x01, 0x01, 0x01, 0x01,
  65         0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
  66         0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
  67         0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
  68 };
  69
  70 u8 rtl8225_tx_gain_cck_ofdm[] = {
  71         0x02, 0x06, 0x0e, 0x1e, 0x3e, 0x7e
  72 };
  73
  74 u8 rtl8225_tx_power_ofdm[] = {
  75         0x80, 0x90, 0xa2, 0xb5, 0xcb, 0xe4
  76 };
  77
  78 u8 rtl8225_tx_power_cck_ch14[] = {
  79         0x18, 0x17, 0x15, 0x0c, 0x00, 0x00, 0x00, 0x00,
  80         0x1b, 0x1a, 0x17, 0x0e, 0x00, 0x00, 0x00, 0x00,
  81         0x1f, 0x1e, 0x1a, 0x0f, 0x00, 0x00, 0x00, 0x00,
  82         0x22, 0x21, 0x1d, 0x11, 0x00, 0x00, 0x00, 0x00,
  83         0x26, 0x25, 0x21, 0x13, 0x00, 0x00, 0x00, 0x00,
  84         0x2b, 0x2a, 0x25, 0x15, 0x00, 0x00, 0x00, 0x00
  85 };
  86
  87 u8 rtl8225_tx_power_cck[] = {
  88         0x18, 0x17, 0x15, 0x11, 0x0c, 0x08, 0x04, 0x02,
  89         0x1b, 0x1a, 0x17, 0x13, 0x0e, 0x09, 0x04, 0x02,
  90         0x1f, 0x1e, 0x1a, 0x15, 0x10, 0x0a, 0x05, 0x02,
  91         0x22, 0x21, 0x1d, 0x18, 0x11, 0x0b, 0x06, 0x02,
  92         0x26, 0x25, 0x21, 0x1b, 0x14, 0x0d, 0x06, 0x03,
  93         0x2b, 0x2a, 0x25, 0x1e, 0x16, 0x0e, 0x07, 0x03
  94 };
  95
  96 void rtl8225_set_gain(struct net_device *dev, short gain)
  97 {
  98         write_phy_ofdm(dev, 0x0d, rtl8225_gain[gain * 4]);
  99         write_phy_ofdm(dev, 0x23, rtl8225_gain[gain * 4 + 1]);
 100         write_phy_ofdm(dev, 0x1b, rtl8225_gain[gain * 4 + 2]);
 101         write_phy_ofdm(dev, 0x1d, rtl8225_gain[gain * 4 + 3]);
 102 }
 103
 104 void write_rtl8225(struct net_device *dev, u8 adr, u16 data)
 105 {
 106         int i;
 107         u16 out, select;
 108         u8 bit;
 109         u32 bangdata = (data << 4) | (adr & 0xf);
 110         struct r8180_priv *priv = ieee80211_priv(dev);
 111
 112         out = read_nic_word(dev, RFPinsOutput) & 0xfff3;
 113
 114         write_nic_word(dev, RFPinsEnable,
 115                 (read_nic_word(dev, RFPinsEnable) | 0x7));
 116
 117         select = read_nic_word(dev, RFPinsSelect);
 118
 119         write_nic_word(dev, RFPinsSelect, select | 0x7 |
 120                 ((priv->card_type == USB) ? 0 : SW_CONTROL_GPIO));
 121
 122         force_pci_posting(dev);
 123         udelay(10);
 124
 125         write_nic_word(dev, RFPinsOutput, out | BB_HOST_BANG_EN);
 126
 127         force_pci_posting(dev);
 128         udelay(2);
 129
 130         write_nic_word(dev, RFPinsOutput, out);
 131
 132         force_pci_posting(dev);
 133         udelay(10);
 134
 135         for (i = 15; i >= 0; i--) {
 136                 bit = (bangdata & (1 << i)) >> i;
 137
 138                 write_nic_word(dev, RFPinsOutput, bit | out);
 139
 140                 write_nic_word(dev, RFPinsOutput, bit | out | BB_HOST_BANG_CLK);
 141                 write_nic_word(dev, RFPinsOutput, bit | out | BB_HOST_BANG_CLK);
 142
 143                 i--;
 144                 bit = (bangdata & (1 << i)) >> i;
 145
 146                 write_nic_word(dev, RFPinsOutput, bit | out | BB_HOST_BANG_CLK);
 147                 write_nic_word(dev, RFPinsOutput, bit | out | BB_HOST_BANG_CLK);
 148
 149                 write_nic_word(dev, RFPinsOutput, bit | out);
 150
 151         }
 152
 153         write_nic_word(dev, RFPinsOutput, out | BB_HOST_BANG_EN);
 154
 155         force_pci_posting(dev);
 156         udelay(10);
 157
 158         write_nic_word(dev, RFPinsOutput, out |
 159                 ((priv->card_type == USB) ? 4 : BB_HOST_BANG_EN));
 160
 161         write_nic_word(dev, RFPinsSelect, select |
 162                 ((priv->card_type == USB) ? 0 : SW_CONTROL_GPIO));
 163
 164         if (priv->card_type == USB)
 165                 mdelay(2);
 166         else
 167                 rtl8185_rf_pins_enable(dev);
 168 }
 169
 170 void rtl8225_SetTXPowerLevel(struct net_device *dev, short ch)
 171 {
 172         struct r8180_priv *priv = ieee80211_priv(dev);
 173         int GainIdx;
 174         int GainSetting;
 175         int i;
 176         u8 power;
 177         u8 *cck_power_table;
 178         u8 max_cck_power_level;
 179         u8 max_ofdm_power_level;
 180         u8 min_ofdm_power_level;
 181         u8 cck_power_level = 0xff & priv->chtxpwr[ch];
 182         u8 ofdm_power_level = 0xff & priv->chtxpwr_ofdm[ch];
 183
 184         if (priv->card_type == USB) {
 185                 max_cck_power_level = 11;
 186                 max_ofdm_power_level = 25;
 187                 min_ofdm_power_level = 10;
 188         } else {
 189                 max_cck_power_level = 35;
 190                 max_ofdm_power_level = 35;
 191                 min_ofdm_power_level = 0;
 192         }
 193
 194         if (cck_power_level > max_cck_power_level)
 195                 cck_power_level = max_cck_power_level;
 196
 197         GainIdx = cck_power_level % 6;
 198         GainSetting = cck_power_level / 6;
 199
 200         if (ch == 14)
 201                 cck_power_table = rtl8225_tx_power_cck_ch14;
 202         else
 203                 cck_power_table = rtl8225_tx_power_cck;
 204
 205         write_nic_byte(dev, TX_GAIN_CCK,
 206                        rtl8225_tx_gain_cck_ofdm[GainSetting] >> 1);
 207
 208         for (i = 0; i < 8; i++) {
 209                 power = cck_power_table[GainIdx * 8 + i];
 210                 write_phy_cck(dev, 0x44 + i, power);
 211         }
 212
 213         /* FIXME Is this delay really needeed ? */
 214         force_pci_posting(dev);
 215         mdelay(1);
 216
 217         if (ofdm_power_level > (max_ofdm_power_level - min_ofdm_power_level))
 218                 ofdm_power_level = max_ofdm_power_level;
 219         else
 220                 ofdm_power_level += min_ofdm_power_level;
 221
 222         if (ofdm_power_level > 35)
 223                 ofdm_power_level = 35;
 224
 225         GainIdx = ofdm_power_level % 6;
 226         GainSetting = ofdm_power_level / 6;
 227
 228         rtl8185_set_anaparam2(dev, RTL8225_ANAPARAM2_ON);
 229
 230         write_phy_ofdm(dev, 2, 0x42);
 231         write_phy_ofdm(dev, 6, 0x00);
 232         write_phy_ofdm(dev, 8, 0x00);
 233
 234         write_nic_byte(dev, TX_GAIN_OFDM,
 235                        rtl8225_tx_gain_cck_ofdm[GainSetting] >> 1);
 236
 237         power = rtl8225_tx_power_ofdm[GainIdx];
 238
 239         write_phy_ofdm(dev, 5, power);
 240         write_phy_ofdm(dev, 7, power);
 241
 242         force_pci_posting(dev);
 243         mdelay(1);
 244 }
 245
 246 void rtl8225_rf_set_chan(struct net_device *dev, short ch)
 247 {
 248         struct r8180_priv *priv = ieee80211_priv(dev);
 249         short gset = (priv->ieee80211->state == IEEE80211_LINKED &&
 250                 ieee80211_is_54g(priv->ieee80211->current_network)) ||
 251                 priv->ieee80211->iw_mode == IW_MODE_MONITOR;
 252
 253         rtl8225_SetTXPowerLevel(dev, ch);
 254
 255         write_rtl8225(dev, 0x7, rtl8225_chan[ch]);
 256
 257         force_pci_posting(dev);
 258         mdelay(10);
 259
 260         if (gset) {
 261                 write_nic_byte(dev, SIFS, 0x22);
 262                 write_nic_byte(dev, DIFS, 0x14);
 263         } else {
 264                 write_nic_byte(dev, SIFS, 0x44);
 265                 write_nic_byte(dev, DIFS, 0x24);
 266         }
 267
 268         if (priv->ieee80211->state == IEEE80211_LINKED &&
 269             ieee80211_is_shortslot(priv->ieee80211->current_network))
 270                 write_nic_byte(dev, SLOT, 0x9);
 271         else
 272                 write_nic_byte(dev, SLOT, 0x14);
 273
 274         if (gset) {
 275                 write_nic_byte(dev, EIFS, 81);
 276                 write_nic_byte(dev, CW_VAL, 0x73);
 277         } else {
 278                 write_nic_byte(dev, EIFS, 81);
 279                 write_nic_byte(dev, CW_VAL, 0xa5);
 280         }
 281 }
 282
 283 void rtl8225_host_pci_init(struct net_device *dev)
 284 {
 285         write_nic_word(dev, RFPinsOutput, 0x480);
 286
 287         rtl8185_rf_pins_enable(dev);
 288
 289         write_nic_word(dev, RFPinsSelect, 0x88 | SW_CONTROL_GPIO);
 290
 291         write_nic_byte(dev, GP_ENABLE, 0);
 292
 293         force_pci_posting(dev);
 294         mdelay(200);
 295
 296         /* bit 6 is for RF on/off detection */
 297         write_nic_word(dev, GP_ENABLE, 0xff & (~(1 << 6)));
 298 }