rt2860_rf.c

   1
   2 /*-
   3  * Copyright (c) 2009-2010 Alexander Egorenkov <egorenar@gmail.com>
   4  * Copyright (c) 2009 Damien Bergamini <damien.bergamini@free.fr>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include "rt2860_rf.h"
  20 #include "rt2860_reg.h"
  21 #include "rt2860_eeprom.h"
  22 #include "rt2860_io.h"
  23 #include "rt2860_debug.h"
  24
  25 /*
  26  * Static variables
  27  */
  28
  29 static const struct rt2860_rf_prog
  30 {
  31         uint8_t chan;
  32         uint32_t r1, r2, r3, r4;
  33 } rt2860_rf_2850[] =
  34 {
  35         {   1, 0x98402ecc, 0x984c0786, 0x9816b455, 0x9800510b },
  36         {   2, 0x98402ecc, 0x984c0786, 0x98168a55, 0x9800519f },
  37         {   3, 0x98402ecc, 0x984c078a, 0x98168a55, 0x9800518b },
  38         {   4, 0x98402ecc, 0x984c078a, 0x98168a55, 0x9800519f },
  39         {   5, 0x98402ecc, 0x984c078e, 0x98168a55, 0x9800518b },
  40         {   6, 0x98402ecc, 0x984c078e, 0x98168a55, 0x9800519f },
  41         {   7, 0x98402ecc, 0x984c0792, 0x98168a55, 0x9800518b },
  42         {   8, 0x98402ecc, 0x984c0792, 0x98168a55, 0x9800519f },
  43         {   9, 0x98402ecc, 0x984c0796, 0x98168a55, 0x9800518b },
  44         {  10, 0x98402ecc, 0x984c0796, 0x98168a55, 0x9800519f },
  45         {  11, 0x98402ecc, 0x984c079a, 0x98168a55, 0x9800518b },
  46         {  12, 0x98402ecc, 0x984c079a, 0x98168a55, 0x9800519f },
  47         {  13, 0x98402ecc, 0x984c079e, 0x98168a55, 0x9800518b },
  48         {  14, 0x98402ecc, 0x984c07a2, 0x98168a55, 0x98005193 },
  49         {  36, 0x98402ecc, 0x984c099a, 0x98158a55, 0x980ed1a3 },
  50         {  38, 0x98402ecc, 0x984c099e, 0x98158a55, 0x980ed193 },
  51         {  40, 0x98402ec8, 0x984c0682, 0x98158a55, 0x980ed183 },
  52         {  44, 0x98402ec8, 0x984c0682, 0x98158a55, 0x980ed1a3 },
  53         {  46, 0x98402ec8, 0x984c0686, 0x98158a55, 0x980ed18b },
  54         {  48, 0x98402ec8, 0x984c0686, 0x98158a55, 0x980ed19b },
  55         {  52, 0x98402ec8, 0x984c068a, 0x98158a55, 0x980ed193 },
  56         {  54, 0x98402ec8, 0x984c068a, 0x98158a55, 0x980ed1a3 },
  57         {  56, 0x98402ec8, 0x984c068e, 0x98158a55, 0x980ed18b },
  58         {  60, 0x98402ec8, 0x984c0692, 0x98158a55, 0x980ed183 },
  59         {  62, 0x98402ec8, 0x984c0692, 0x98158a55, 0x980ed193 },
  60         {  64, 0x98402ec8, 0x984c0692, 0x98158a55, 0x980ed1a3 },
  61         { 100, 0x98402ec8, 0x984c06b2, 0x98178a55, 0x980ed783 },
  62         { 102, 0x98402ec8, 0x985c06b2, 0x98578a55, 0x980ed793 },
  63         { 104, 0x98402ec8, 0x985c06b2, 0x98578a55, 0x980ed1a3 },
  64         { 108, 0x98402ecc, 0x985c0a32, 0x98578a55, 0x980ed193 },
  65         { 110, 0x98402ecc, 0x984c0a36, 0x98178a55, 0x980ed183 },
  66         { 112, 0x98402ecc, 0x984c0a36, 0x98178a55, 0x980ed19b },
  67         { 116, 0x98402ecc, 0x984c0a3a, 0x98178a55, 0x980ed1a3 },
  68         { 118, 0x98402ecc, 0x984c0a3e, 0x98178a55, 0x980ed193 },
  69         { 120, 0x98402ec4, 0x984c0382, 0x98178a55, 0x980ed183 },
  70         { 124, 0x98402ec4, 0x984c0382, 0x98178a55, 0x980ed193 },
  71         { 126, 0x98402ec4, 0x984c0382, 0x98178a55, 0x980ed15b },
  72         { 128, 0x98402ec4, 0x984c0382, 0x98178a55, 0x980ed1a3 },
  73         { 132, 0x98402ec4, 0x984c0386, 0x98178a55, 0x980ed18b },
  74         { 134, 0x98402ec4, 0x984c0386, 0x98178a55, 0x980ed193 },
  75         { 136, 0x98402ec4, 0x984c0386, 0x98178a55, 0x980ed19b },
  76         { 140, 0x98402ec4, 0x984c038a, 0x98178a55, 0x980ed183 },
  77         { 149, 0x98402ec4, 0x984c038a, 0x98178a55, 0x980ed1a7 },
  78         { 151, 0x98402ec4, 0x984c038e, 0x98178a55, 0x980ed187 },
  79         { 153, 0x98402ec4, 0x984c038e, 0x98178a55, 0x980ed18f },
  80         { 157, 0x98402ec4, 0x984c038e, 0x98178a55, 0x980ed19f },
  81         { 159, 0x98402ec4, 0x984c038e, 0x98178a55, 0x980ed1a7 },
  82         { 161, 0x98402ec4, 0x984c0392, 0x98178a55, 0x980ed187 },
  83         { 165, 0x98402ec4, 0x984c0392, 0x98178a55, 0x980ed197 },
  84         { 184, 0x95002ccc, 0x9500491e, 0x9509be55, 0x950c0a0b },
  85         { 188, 0x95002ccc, 0x95004922, 0x9509be55, 0x950c0a13 },
  86         { 192, 0x95002ccc, 0x95004926, 0x9509be55, 0x950c0a1b },
  87         { 196, 0x95002ccc, 0x9500492a, 0x9509be55, 0x950c0a23 },
  88         { 208, 0x95002ccc, 0x9500493a, 0x9509be55, 0x950c0a13 },
  89         { 212, 0x95002ccc, 0x9500493e, 0x9509be55, 0x950c0a1b },
  90         { 216, 0x95002ccc, 0x95004982, 0x9509be55, 0x950c0a23 },
  91 };
  92
  93 /*
  94  * rt2860_rf_name
  95  */
  96 const char *rt2860_rf_name(int rf_rev)
  97 {
  98         switch (rf_rev)
  99         {
 100                 case RT2860_EEPROM_RF_2820:
 101                         return "RT2820";
 102
 103                 case RT2860_EEPROM_RF_2850:
 104                         return "RT2850";
 105
 106                 case RT2860_EEPROM_RF_2720:
 107                         return "RT2720";
 108
 109                 case RT2860_EEPROM_RF_2750:
 110                         return "RT2750";
 111
 112                 default:
 113                         return "unknown";
 114         }
 115 }
 116
 117 /*
 118  * rt2860_rf_select_chan_group
 119  */
 120 void rt2860_rf_select_chan_group(struct rt2860_softc *sc,
 121         struct ieee80211_channel *c)
 122 {
 123         struct ifnet *ifp;
 124         struct ieee80211com *ic;
 125         int chan, group;
 126         uint32_t tmp;
 127
 128         ifp = sc->ifp;
 129         ic = ifp->if_l2com;
 130
 131         chan = ieee80211_chan2ieee(ic, c);
 132         if (chan == 0 || chan == IEEE80211_CHAN_ANY)
 133                 return;
 134
 135         if (chan <= 14)
 136                 group = 0;
 137         else if (chan <= 64)
 138                 group = 1;
 139         else if (chan <= 128)
 140                 group = 2;
 141         else
 142                 group = 3;
 143
 144         rt2860_io_bbp_write(sc, 62, 0x37 - sc->lna_gain[group]);
 145         rt2860_io_bbp_write(sc, 63, 0x37 - sc->lna_gain[group]);
 146         rt2860_io_bbp_write(sc, 64, 0x37 - sc->lna_gain[group]);
 147         rt2860_io_bbp_write(sc, 86, 0x00);
 148
 149         if (group == 0)
 150         {
 151                 if (sc->ext_lna_2ghz)
 152                 {
 153                         rt2860_io_bbp_write(sc, 82, 0x62);
 154                         rt2860_io_bbp_write(sc, 75, 0x46);
 155                 }
 156                 else
 157                 {
 158                         rt2860_io_bbp_write(sc, 82, 0x84);
 159                         rt2860_io_bbp_write(sc, 75, 0x50);
 160                 }
 161         }
 162         else
 163         {
 164                 rt2860_io_bbp_write(sc, 82, 0xf2);
 165
 166                 if (sc->ext_lna_5ghz)
 167                         rt2860_io_bbp_write(sc, 75, 0x46);
 168                 else
 169                         rt2860_io_bbp_write(sc, 75, 0x50);
 170         }
 171
 172         if (group == 0)
 173         {
 174                 tmp = 0x2e + sc->lna_gain[group];
 175         }
 176         else
 177         {
 178                 if ((ic->ic_flags & IEEE80211_F_SCAN) || !IEEE80211_IS_CHAN_HT40(c))
 179                         tmp = 0x32 + sc->lna_gain[group] * 5 / 3;
 180                 else
 181                         tmp = 0x3a + sc->lna_gain[group] * 5 / 3;
 182         }
 183
 184         rt2860_io_bbp_write(sc, 66, tmp);
 185
 186         tmp = RT2860_REG_RFTR_ENABLE | RT2860_REG_TRSW_ENABLE;
 187
 188         if (group == 0)
 189         {
 190                 tmp |= RT2860_REG_PA_PE_G0_ENABLE | RT2860_REG_LNA_PE_G0_ENABLE;
 191
 192                 if (sc->ntxpath > 1)
 193                         tmp |= RT2860_REG_PA_PE_G1_ENABLE;
 194
 195                 if (sc->nrxpath > 1)
 196                         tmp |= RT2860_REG_LNA_PE_G1_ENABLE;
 197         }
 198         else
 199         {
 200                 tmp |= RT2860_REG_PA_PE_A0_ENABLE | RT2860_REG_LNA_PE_A0_ENABLE;
 201
 202                 if (sc->ntxpath > 1)
 203                         tmp |= RT2860_REG_PA_PE_A1_ENABLE;
 204
 205                 if (sc->nrxpath > 1)
 206                         tmp |= RT2860_REG_LNA_PE_A1_ENABLE;
 207         }
 208
 209         rt2860_io_mac_write(sc, RT2860_REG_TX_PIN_CFG, tmp);
 210
 211         tmp = rt2860_io_mac_read(sc, RT2860_REG_TX_BAND_CFG);
 212
 213         tmp &= ~(RT2860_REG_TX_BAND_BG | RT2860_REG_TX_BAND_A | RT2860_REG_TX_BAND_HT40_ABOVE);
 214
 215         if (group == 0)
 216                 tmp |= RT2860_REG_TX_BAND_BG;
 217         else
 218                 tmp |= RT2860_REG_TX_BAND_A;
 219
 220         /* set central channel position */
 221
 222         if (IEEE80211_IS_CHAN_HT40U(c))
 223                 tmp |= RT2860_REG_TX_BAND_HT40_BELOW;
 224         else if (IEEE80211_IS_CHAN_HT40D(c))
 225                 tmp |= RT2860_REG_TX_BAND_HT40_ABOVE;
 226         else
 227                 tmp |= RT2860_REG_TX_BAND_HT40_BELOW;
 228
 229         rt2860_io_mac_write(sc, RT2860_REG_TX_BAND_CFG, tmp);
 230
 231         /* set bandwidth (20MHz or 40MHz) */
 232
 233         tmp = rt2860_io_bbp_read(sc, 4);
 234
 235         tmp &= ~0x18;
 236
 237         if (IEEE80211_IS_CHAN_HT40(c))
 238                 tmp |= 0x10;
 239
 240         rt2860_io_bbp_write(sc, 4, tmp);
 241
 242         /* set central channel position */
 243
 244         tmp = rt2860_io_bbp_read(sc, 3);
 245
 246         tmp &= ~0x20;
 247
 248         if (IEEE80211_IS_CHAN_HT40D(c))
 249                 tmp |= 0x20;
 250
 251         rt2860_io_bbp_write(sc, 3, tmp);
 252
 253         if (sc->mac_rev == 0x28600100)
 254         {
 255                 if (!IEEE80211_IS_CHAN_HT40(c))
 256                 {
 257                         rt2860_io_bbp_write(sc, 69, 0x16);
 258                         rt2860_io_bbp_write(sc, 70, 0x08);
 259                         rt2860_io_bbp_write(sc, 73, 0x12);
 260                 }
 261                 else
 262                 {
 263                         rt2860_io_bbp_write(sc, 69, 0x1a);
 264                         rt2860_io_bbp_write(sc, 70, 0x0a);
 265                         rt2860_io_bbp_write(sc, 73, 0x16);
 266                 }
 267         }
 268 }
 269
 270 /*
 271  * rt2860_rf_set_chan
 272  */
 273 void rt2860_rf_set_chan(struct rt2860_softc *sc,
 274         struct ieee80211_channel *c)
 275 {
 276         struct ifnet *ifp;
 277         struct ieee80211com *ic;
 278         const struct rt2860_rf_prog *prog;
 279         uint32_t r1, r2, r3, r4;
 280         int8_t txpow1, txpow2;
 281         int i, chan;
 282
 283         ifp = sc->ifp;
 284         ic = ifp->if_l2com;
 285         prog = rt2860_rf_2850;
 286
 287         /* get central channel position */
 288
 289         chan = ieee80211_chan2ieee(ic, c);
 290
 291         if (IEEE80211_IS_CHAN_HT40U(c))
 292                 chan += 2;
 293         else if (IEEE80211_IS_CHAN_HT40D(c))
 294                 chan -= 2;
 295
 296         RT2860_DPRINTF(sc, RT2860_DEBUG_CHAN,
 297                 "%s: RF set channel: channel=%u, HT%s%s\n",
 298                 device_get_nameunit(sc->dev),
 299                 ieee80211_chan2ieee(ic, c),
 300                 !IEEE80211_IS_CHAN_HT(c) ? " disabled" :
 301                         IEEE80211_IS_CHAN_HT20(c) ? "20":
 302                                 IEEE80211_IS_CHAN_HT40U(c) ? "40U" : "40D",
 303                 (ic->ic_flags & IEEE80211_F_SCAN) ? ", scanning" : "");
 304
 305         if (chan == 0 || chan == IEEE80211_CHAN_ANY)
 306                 return;
 307
 308         for (i = 0; prog[i].chan != chan; i++);
 309
 310         r1 = prog[i].r1;
 311         r2 = prog[i].r2;
 312         r3 = prog[i].r3;
 313         r4 = prog[i].r4;
 314
 315         txpow1 = sc->txpow1[i];
 316         txpow2 = sc->txpow2[i];
 317
 318         if (sc->ntxpath == 1)
 319                 r2 |= (1 << 14);
 320
 321         if (sc->nrxpath == 2)
 322                 r2 |= (1 << 6);
 323         else if (sc->nrxpath == 1)
 324                 r2 |= (1 << 17) | (1 << 6);
 325
 326         if (IEEE80211_IS_CHAN_2GHZ(c))
 327         {
 328                 r3 = (r3 & 0xffffc1ff) | (txpow1 << 9);
 329                 r4 = (r4 & ~0x001f87c0) | (sc->rf_freq_off << 15) | (txpow2 << 6);
 330         }
 331         else
 332         {
 333                 r3 = r3 & 0xffffc1ff;
 334                 r4 = (r4 & ~0x001f87c0) | (sc->rf_freq_off << 15);
 335
 336                 if (txpow1 >= RT2860_EEPROM_TXPOW_5GHZ_MIN && txpow1 < 0)
 337                 {
 338                         txpow1 = (-RT2860_EEPROM_TXPOW_5GHZ_MIN + txpow1);
 339                         if (txpow1 > RT2860_EEPROM_TXPOW_5GHZ_MAX)
 340                                 txpow1 = RT2860_EEPROM_TXPOW_5GHZ_MAX;
 341
 342                         r3 |= (txpow1 << 10);
 343                 }
 344                 else
 345                 {
 346                         if (txpow1 > RT2860_EEPROM_TXPOW_5GHZ_MAX)
 347                                 txpow1 = RT2860_EEPROM_TXPOW_5GHZ_MAX;
 348
 349                         r3 |= (txpow1 << 10) | (1 << 9);
 350                 }
 351
 352                 if (txpow2 >= RT2860_EEPROM_TXPOW_5GHZ_MIN && txpow2 < 0)
 353                 {
 354                         txpow2 = (-RT2860_EEPROM_TXPOW_5GHZ_MIN + txpow2);
 355                         if (txpow2 > RT2860_EEPROM_TXPOW_5GHZ_MAX)
 356                                 txpow2 = RT2860_EEPROM_TXPOW_5GHZ_MAX;
 357
 358                         r4 |= (txpow2 << 7);
 359                 }
 360                 else
 361                 {
 362                         if (txpow2 > RT2860_EEPROM_TXPOW_5GHZ_MAX)
 363                                 txpow2 = RT2860_EEPROM_TXPOW_5GHZ_MAX;
 364
 365                         r4 |= (txpow2 << 7) | (1 << 6);
 366                 }
 367         }
 368
 369         if (!(ic->ic_flags & IEEE80211_F_SCAN) && IEEE80211_IS_CHAN_HT40(c))
 370                 r4 |= (1 << 21);
 371
 372         rt2860_io_rf_write(sc, RT2860_REG_RF_R1, r1);
 373         rt2860_io_rf_write(sc, RT2860_REG_RF_R2, r2);
 374         rt2860_io_rf_write(sc, RT2860_REG_RF_R3, r3 & ~(1 << 2));
 375         rt2860_io_rf_write(sc, RT2860_REG_RF_R4, r4);
 376
 377         DELAY(200);
 378
 379         rt2860_io_rf_write(sc, RT2860_REG_RF_R1, r1);
 380         rt2860_io_rf_write(sc, RT2860_REG_RF_R2, r2);
 381         rt2860_io_rf_write(sc, RT2860_REG_RF_R3, r3 | (1 << 2));
 382         rt2860_io_rf_write(sc, RT2860_REG_RF_R4, r4);
 383
 384         DELAY(200);
 385
 386         rt2860_io_rf_write(sc, RT2860_REG_RF_R1, r1);
 387         rt2860_io_rf_write(sc, RT2860_REG_RF_R2, r2);
 388         rt2860_io_rf_write(sc, RT2860_REG_RF_R3, r3 & ~(1 << 2));
 389         rt2860_io_rf_write(sc, RT2860_REG_RF_R4, r4);
 390
 391         rt2860_rf_select_chan_group(sc, c);
 392
 393         DELAY(1000);
 394 }