drivers/net/wireless/ath/ath9k/ar9002_phy.c

   1 /*
   2  * Copyright (c) 2008-2011 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 /**
  18  * DOC: Programming Atheros 802.11n analog front end radios
  19  *
  20  * AR5416 MAC based PCI devices and AR518 MAC based PCI-Express
  21  * devices have either an external AR2133 analog front end radio for single
  22  * band 2.4 GHz communication or an AR5133 analog front end radio for dual
  23  * band 2.4 GHz / 5 GHz communication.
  24  *
  25  * All devices after the AR5416 and AR5418 family starting with the AR9280
  26  * have their analog front radios, MAC/BB and host PCIe/USB interface embedded
  27  * into a single-chip and require less programming.
  28  *
  29  * The following single-chips exist with a respective embedded radio:
  30  *
  31  * AR9280 - 11n dual-band 2x2 MIMO for PCIe
  32  * AR9281 - 11n single-band 1x2 MIMO for PCIe
  33  * AR9285 - 11n single-band 1x1 for PCIe
  34  * AR9287 - 11n single-band 2x2 MIMO for PCIe
  35  *
  36  * AR9220 - 11n dual-band 2x2 MIMO for PCI
  37  * AR9223 - 11n single-band 2x2 MIMO for PCI
  38  *
  39  * AR9287 - 11n single-band 1x1 MIMO for USB
  40  */
  41
  42 #include "hw.h"
  43 #include "ar9002_phy.h"
  44
  45 /**
  46  * ar9002_hw_set_channel - set channel on single-chip device
  47  * @ah: atheros hardware structure
  48  * @chan:
  49  *
  50  * This is the function to change channel on single-chip devices, that is
  51  * all devices after ar9280.
  52  *
  53  * This function takes the channel value in MHz and sets
  54  * hardware channel value. Assumes writes have been enabled to analog bus.
  55  *
  56  * Actual Expression,
  57  *
  58  * For 2GHz channel,
  59  * Channel Frequency = (3/4) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
  60  * (freq_ref = 40MHz)
  61  *
  62  * For 5GHz channel,
  63  * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^10)
  64  * (freq_ref = 40MHz/(24>>amodeRefSel))
  65  */
  66 static int ar9002_hw_set_channel(struct ath_hw *ah, struct ath9k_channel *chan)
  67 {
  68         u16 bMode, fracMode, aModeRefSel = 0;
  69         u32 freq, ndiv, channelSel = 0, channelFrac = 0, reg32 = 0;
  70         struct chan_centers centers;
  71         u32 refDivA = 24;
  72
  73         ath9k_hw_get_channel_centers(ah, chan, &centers);
  74         freq = centers.synth_center;
  75
  76         reg32 = REG_READ(ah, AR_PHY_SYNTH_CONTROL);
  77         reg32 &= 0xc0000000;
  78
  79         if (freq < 4800) { /* 2 GHz, fractional mode */
  80                 u32 txctl;
  81                 int regWrites = 0;
  82
  83                 bMode = 1;
  84                 fracMode = 1;
  85                 aModeRefSel = 0;
  86                 channelSel = CHANSEL_2G(freq);
  87
  88                 if (AR_SREV_9287_11_OR_LATER(ah)) {
  89                         if (freq == 2484) {
  90                                 /* Enable channel spreading for channel 14 */
  91                                 REG_WRITE_ARRAY(&ah->iniCckfirJapan2484,
  92                                                 1, regWrites);
  93                         } else {
  94                                 REG_WRITE_ARRAY(&ah->iniCckfirNormal,
  95                                                 1, regWrites);
  96                         }
  97                 } else {
  98                         txctl = REG_READ(ah, AR_PHY_CCK_TX_CTRL);
  99                         if (freq == 2484) {
 100                                 /* Enable channel spreading for channel 14 */
 101                                 REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
 102                                           txctl | AR_PHY_CCK_TX_CTRL_JAPAN);
 103                         } else {
 104                                 REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
 105                                           txctl & ~AR_PHY_CCK_TX_CTRL_JAPAN);
 106                         }
 107                 }
 108         } else {
 109                 bMode = 0;
 110                 fracMode = 0;
 111
 112                 switch (ah->eep_ops->get_eeprom(ah, EEP_FRAC_N_5G)) {
 113                 case 0:
 114                         if (IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))
 115                                 aModeRefSel = 0;
 116                         else if ((freq % 20) == 0)
 117                                 aModeRefSel = 3;
 118                         else if ((freq % 10) == 0)
 119                                 aModeRefSel = 2;
 120                         if (aModeRefSel)
 121                                 break;
 122                         /* fall through */
 123                 case 1:
 124                 default:
 125                         aModeRefSel = 0;
 126                         /*
 127                          * Enable 2G (fractional) mode for channels
 128                          * which are 5MHz spaced.
 129                          */
 130                         fracMode = 1;
 131                         refDivA = 1;
 132                         channelSel = CHANSEL_5G(freq);
 133
 134                         /* RefDivA setting */
 135                         ath9k_hw_analog_shift_rmw(ah, AR_AN_SYNTH9,
 136                                       AR_AN_SYNTH9_REFDIVA,
 137                                       AR_AN_SYNTH9_REFDIVA_S, refDivA);
 138
 139                 }
 140
 141                 if (!fracMode) {
 142                         ndiv = (freq * (refDivA >> aModeRefSel)) / 60;
 143                         channelSel = ndiv & 0x1ff;
 144                         channelFrac = (ndiv & 0xfffffe00) * 2;
 145                         channelSel = (channelSel << 17) | channelFrac;
 146                 }
 147         }
 148
 149         reg32 = reg32 |
 150             (bMode << 29) |
 151             (fracMode << 28) | (aModeRefSel << 26) | (channelSel);
 152
 153         REG_WRITE(ah, AR_PHY_SYNTH_CONTROL, reg32);
 154
 155         ah->curchan = chan;
 156
 157         return 0;
 158 }
 159
 160 /**
 161  * ar9002_hw_spur_mitigate - convert baseband spur frequency
 162  * @ah: atheros hardware structure
 163  * @chan:
 164  *
 165  * For single-chip solutions. Converts to baseband spur frequency given the
 166  * input channel frequency and compute register settings below.
 167  */
 168 static void ar9002_hw_spur_mitigate(struct ath_hw *ah,
 169                                     struct ath9k_channel *chan)
 170 {
 171         int bb_spur = AR_NO_SPUR;
 172         int freq;
 173         int bin;
 174         int bb_spur_off, spur_subchannel_sd;
 175         int spur_freq_sd;
 176         int spur_delta_phase;
 177         int denominator;
 178         int tmp, newVal;
 179         int i;
 180         struct chan_centers centers;
 181
 182         int cur_bb_spur;
 183         bool is2GHz = IS_CHAN_2GHZ(chan);
 184
 185         ath9k_hw_get_channel_centers(ah, chan, &centers);
 186         freq = centers.synth_center;
 187
 188         for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
 189                 cur_bb_spur = ah->eep_ops->get_spur_channel(ah, i, is2GHz);
 190
 191                 if (AR_NO_SPUR == cur_bb_spur)
 192                         break;
 193
 194                 if (is2GHz)
 195                         cur_bb_spur = (cur_bb_spur / 10) + AR_BASE_FREQ_2GHZ;
 196                 else
 197                         cur_bb_spur = (cur_bb_spur / 10) + AR_BASE_FREQ_5GHZ;
 198
 199                 cur_bb_spur = cur_bb_spur - freq;
 200
 201                 if (IS_CHAN_HT40(chan)) {
 202                         if ((cur_bb_spur > -AR_SPUR_FEEQ_BOUND_HT40) &&
 203                             (cur_bb_spur < AR_SPUR_FEEQ_BOUND_HT40)) {
 204                                 bb_spur = cur_bb_spur;
 205                                 break;
 206                         }
 207                 } else if ((cur_bb_spur > -AR_SPUR_FEEQ_BOUND_HT20) &&
 208                            (cur_bb_spur < AR_SPUR_FEEQ_BOUND_HT20)) {
 209                         bb_spur = cur_bb_spur;
 210                         break;
 211                 }
 212         }
 213
 214         if (AR_NO_SPUR == bb_spur) {
 215                 REG_CLR_BIT(ah, AR_PHY_FORCE_CLKEN_CCK,
 216                             AR_PHY_FORCE_CLKEN_CCK_MRC_MUX);
 217                 return;
 218         } else {
 219                 REG_CLR_BIT(ah, AR_PHY_FORCE_CLKEN_CCK,
 220                             AR_PHY_FORCE_CLKEN_CCK_MRC_MUX);
 221         }
 222
 223         bin = bb_spur * 320;
 224
 225         tmp = REG_READ(ah, AR_PHY_TIMING_CTRL4(0));
 226
 227         ENABLE_REGWRITE_BUFFER(ah);
 228
 229         newVal = tmp | (AR_PHY_TIMING_CTRL4_ENABLE_SPUR_RSSI |
 230                         AR_PHY_TIMING_CTRL4_ENABLE_SPUR_FILTER |
 231                         AR_PHY_TIMING_CTRL4_ENABLE_CHAN_MASK |
 232                         AR_PHY_TIMING_CTRL4_ENABLE_PILOT_MASK);
 233         REG_WRITE(ah, AR_PHY_TIMING_CTRL4(0), newVal);
 234
 235         newVal = (AR_PHY_SPUR_REG_MASK_RATE_CNTL |
 236                   AR_PHY_SPUR_REG_ENABLE_MASK_PPM |
 237                   AR_PHY_SPUR_REG_MASK_RATE_SELECT |
 238                   AR_PHY_SPUR_REG_ENABLE_VIT_SPUR_RSSI |
 239                   SM(SPUR_RSSI_THRESH, AR_PHY_SPUR_REG_SPUR_RSSI_THRESH));
 240         REG_WRITE(ah, AR_PHY_SPUR_REG, newVal);
 241
 242         if (IS_CHAN_HT40(chan)) {
 243                 if (bb_spur < 0) {
 244                         spur_subchannel_sd = 1;
 245                         bb_spur_off = bb_spur + 10;
 246                 } else {
 247                         spur_subchannel_sd = 0;
 248                         bb_spur_off = bb_spur - 10;
 249                 }
 250         } else {
 251                 spur_subchannel_sd = 0;
 252                 bb_spur_off = bb_spur;
 253         }
 254
 255         if (IS_CHAN_HT40(chan))
 256                 spur_delta_phase =
 257                         ((bb_spur * 262144) /
 258                          10) & AR_PHY_TIMING11_SPUR_DELTA_PHASE;
 259         else
 260                 spur_delta_phase =
 261                         ((bb_spur * 524288) /
 262                          10) & AR_PHY_TIMING11_SPUR_DELTA_PHASE;
 263
 264         denominator = IS_CHAN_2GHZ(chan) ? 44 : 40;
 265         spur_freq_sd = ((bb_spur_off * 2048) / denominator) & 0x3ff;
 266
 267         newVal = (AR_PHY_TIMING11_USE_SPUR_IN_AGC |
 268                   SM(spur_freq_sd, AR_PHY_TIMING11_SPUR_FREQ_SD) |
 269                   SM(spur_delta_phase, AR_PHY_TIMING11_SPUR_DELTA_PHASE));
 270         REG_WRITE(ah, AR_PHY_TIMING11, newVal);
 271
 272         newVal = spur_subchannel_sd << AR_PHY_SFCORR_SPUR_SUBCHNL_SD_S;
 273         REG_WRITE(ah, AR_PHY_SFCORR_EXT, newVal);
 274
 275         ar5008_hw_cmn_spur_mitigate(ah, chan, bin);
 276
 277         REGWRITE_BUFFER_FLUSH(ah);
 278 }
 279
 280 static void ar9002_olc_init(struct ath_hw *ah)
 281 {
 282         u32 i;
 283
 284         if (!OLC_FOR_AR9280_20_LATER)
 285                 return;
 286
 287         if (OLC_FOR_AR9287_10_LATER) {
 288                 REG_SET_BIT(ah, AR_PHY_TX_PWRCTRL9,
 289                                 AR_PHY_TX_PWRCTRL9_RES_DC_REMOVAL);
 290                 ath9k_hw_analog_shift_rmw(ah, AR9287_AN_TXPC0,
 291                                 AR9287_AN_TXPC0_TXPCMODE,
 292                                 AR9287_AN_TXPC0_TXPCMODE_S,
 293                                 AR9287_AN_TXPC0_TXPCMODE_TEMPSENSE);
 294                 udelay(100);
 295         } else {
 296                 for (i = 0; i < AR9280_TX_GAIN_TABLE_SIZE; i++)
 297                         ah->originalGain[i] =
 298                                 MS(REG_READ(ah, AR_PHY_TX_GAIN_TBL1 + i * 4),
 299                                                 AR_PHY_TX_GAIN);
 300                 ah->PDADCdelta = 0;
 301         }
 302 }
 303
 304 static u32 ar9002_hw_compute_pll_control(struct ath_hw *ah,
 305                                          struct ath9k_channel *chan)
 306 {
 307         int ref_div = 5;
 308         int pll_div = 0x2c;
 309         u32 pll;
 310
 311         if (chan && IS_CHAN_5GHZ(chan) && !IS_CHAN_A_FAST_CLOCK(ah, chan)) {
 312                 if (AR_SREV_9280_20(ah)) {
 313                         ref_div = 10;
 314                         pll_div = 0x50;
 315                 } else {
 316                         pll_div = 0x28;
 317                 }
 318         }
 319
 320         pll = SM(ref_div, AR_RTC_9160_PLL_REFDIV);
 321         pll |= SM(pll_div, AR_RTC_9160_PLL_DIV);
 322
 323         if (chan && IS_CHAN_HALF_RATE(chan))
 324                 pll |= SM(0x1, AR_RTC_9160_PLL_CLKSEL);
 325         else if (chan && IS_CHAN_QUARTER_RATE(chan))
 326                 pll |= SM(0x2, AR_RTC_9160_PLL_CLKSEL);
 327
 328         return pll;
 329 }
 330
 331 static void ar9002_hw_do_getnf(struct ath_hw *ah,
 332                               int16_t nfarray[NUM_NF_READINGS])
 333 {
 334         int16_t nf;
 335
 336         nf = MS(REG_READ(ah, AR_PHY_CCA), AR9280_PHY_MINCCA_PWR);
 337         nfarray[0] = sign_extend32(nf, 8);
 338
 339         nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR9280_PHY_EXT_MINCCA_PWR);
 340         if (IS_CHAN_HT40(ah->curchan))
 341                 nfarray[3] = sign_extend32(nf, 8);
 342
 343         if (!(ah->rxchainmask & BIT(1)))
 344                 return;
 345
 346         nf = MS(REG_READ(ah, AR_PHY_CH1_CCA), AR9280_PHY_CH1_MINCCA_PWR);
 347         nfarray[1] = sign_extend32(nf, 8);
 348
 349         nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR9280_PHY_CH1_EXT_MINCCA_PWR);
 350         if (IS_CHAN_HT40(ah->curchan))
 351                 nfarray[4] = sign_extend32(nf, 8);
 352 }
 353
 354 static void ar9002_hw_set_nf_limits(struct ath_hw *ah)
 355 {
 356         if (AR_SREV_9285(ah)) {
 357                 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9285_2GHZ;
 358                 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9285_2GHZ;
 359                 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9285_2GHZ;
 360         } else if (AR_SREV_9287(ah)) {
 361                 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9287_2GHZ;
 362                 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9287_2GHZ;
 363                 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9287_2GHZ;
 364         } else if (AR_SREV_9271(ah)) {
 365                 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9271_2GHZ;
 366                 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9271_2GHZ;
 367                 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9271_2GHZ;
 368         } else {
 369                 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9280_2GHZ;
 370                 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9280_2GHZ;
 371                 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9280_2GHZ;
 372                 ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_9280_5GHZ;
 373                 ah->nf_5g.min = AR_PHY_CCA_MIN_GOOD_VAL_9280_5GHZ;
 374                 ah->nf_5g.nominal = AR_PHY_CCA_NOM_VAL_9280_5GHZ;
 375         }
 376 }
 377
 378 static void ar9002_hw_antdiv_comb_conf_get(struct ath_hw *ah,
 379                                    struct ath_hw_antcomb_conf *antconf)
 380 {
 381         u32 regval;
 382
 383         regval = REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
 384         antconf->main_lna_conf = (regval & AR_PHY_9285_ANT_DIV_MAIN_LNACONF) >>
 385                                   AR_PHY_9285_ANT_DIV_MAIN_LNACONF_S;
 386         antconf->alt_lna_conf = (regval & AR_PHY_9285_ANT_DIV_ALT_LNACONF) >>
 387                                  AR_PHY_9285_ANT_DIV_ALT_LNACONF_S;
 388         antconf->fast_div_bias = (regval & AR_PHY_9285_FAST_DIV_BIAS) >>
 389                                   AR_PHY_9285_FAST_DIV_BIAS_S;
 390         antconf->lna1_lna2_switch_delta = -1;
 391         antconf->lna1_lna2_delta = -3;
 392         antconf->div_group = 0;
 393 }
 394
 395 static void ar9002_hw_antdiv_comb_conf_set(struct ath_hw *ah,
 396                                    struct ath_hw_antcomb_conf *antconf)
 397 {
 398         u32 regval;
 399
 400         regval = REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
 401         regval &= ~(AR_PHY_9285_ANT_DIV_MAIN_LNACONF |
 402                     AR_PHY_9285_ANT_DIV_ALT_LNACONF |
 403                     AR_PHY_9285_FAST_DIV_BIAS);
 404         regval |= ((antconf->main_lna_conf << AR_PHY_9285_ANT_DIV_MAIN_LNACONF_S)
 405                    & AR_PHY_9285_ANT_DIV_MAIN_LNACONF);
 406         regval |= ((antconf->alt_lna_conf << AR_PHY_9285_ANT_DIV_ALT_LNACONF_S)
 407                    & AR_PHY_9285_ANT_DIV_ALT_LNACONF);
 408         regval |= ((antconf->fast_div_bias << AR_PHY_9285_FAST_DIV_BIAS_S)
 409                    & AR_PHY_9285_FAST_DIV_BIAS);
 410
 411         REG_WRITE(ah, AR_PHY_MULTICHAIN_GAIN_CTL, regval);
 412 }
 413
 414 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
 415
 416 static void ar9002_hw_set_bt_ant_diversity(struct ath_hw *ah, bool enable)
 417 {
 418         struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
 419         u8 antdiv_ctrl1, antdiv_ctrl2;
 420         u32 regval;
 421
 422         if (enable) {
 423                 antdiv_ctrl1 = ATH_BT_COEX_ANTDIV_CONTROL1_ENABLE;
 424                 antdiv_ctrl2 = ATH_BT_COEX_ANTDIV_CONTROL2_ENABLE;
 425
 426                 /*
 427                  * Don't disable BT ant to allow BB to control SWCOM.
 428                  */
 429                 btcoex->bt_coex_mode2 &= (~(AR_BT_DISABLE_BT_ANT));
 430                 REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex->bt_coex_mode2);
 431
 432                 REG_WRITE(ah, AR_PHY_SWITCH_COM, ATH_BT_COEX_ANT_DIV_SWITCH_COM);
 433                 REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0, 0xf0000000);
 434         } else {
 435                 /*
 436                  * Disable antenna diversity, use LNA1 only.
 437                  */
 438                 antdiv_ctrl1 = ATH_BT_COEX_ANTDIV_CONTROL1_FIXED_A;
 439                 antdiv_ctrl2 = ATH_BT_COEX_ANTDIV_CONTROL2_FIXED_A;
 440
 441                 /*
 442                  * Disable BT Ant. to allow concurrent BT and WLAN receive.
 443                  */
 444                 btcoex->bt_coex_mode2 |= AR_BT_DISABLE_BT_ANT;
 445                 REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex->bt_coex_mode2);
 446
 447                 /*
 448                  * Program SWCOM table to make sure RF switch always parks
 449                  * at BT side.
 450                  */
 451                 REG_WRITE(ah, AR_PHY_SWITCH_COM, 0);
 452                 REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0, 0xf0000000);
 453         }
 454
 455         regval = REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
 456         regval &= (~(AR_PHY_9285_ANT_DIV_CTL_ALL));
 457         /*
 458          * Clear ant_fast_div_bias [14:9] since for WB195,
 459          * the main LNA is always LNA1.
 460          */
 461         regval &= (~(AR_PHY_9285_FAST_DIV_BIAS));
 462         regval |= SM(antdiv_ctrl1, AR_PHY_9285_ANT_DIV_CTL);
 463         regval |= SM(antdiv_ctrl2, AR_PHY_9285_ANT_DIV_ALT_LNACONF);
 464         regval |= SM((antdiv_ctrl2 >> 2), AR_PHY_9285_ANT_DIV_MAIN_LNACONF);
 465         regval |= SM((antdiv_ctrl1 >> 1), AR_PHY_9285_ANT_DIV_ALT_GAINTB);
 466         regval |= SM((antdiv_ctrl1 >> 2), AR_PHY_9285_ANT_DIV_MAIN_GAINTB);
 467         REG_WRITE(ah, AR_PHY_MULTICHAIN_GAIN_CTL, regval);
 468
 469         regval = REG_READ(ah, AR_PHY_CCK_DETECT);
 470         regval &= (~AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
 471         regval |= SM((antdiv_ctrl1 >> 3), AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
 472         REG_WRITE(ah, AR_PHY_CCK_DETECT, regval);
 473 }
 474
 475 #endif
 476
 477 static void ar9002_hw_spectral_scan_config(struct ath_hw *ah,
 478                                     struct ath_spec_scan *param)
 479 {
 480         u32 repeat_bit;
 481         u8 count;
 482
 483         if (!param->enabled) {
 484                 REG_CLR_BIT(ah, AR_PHY_SPECTRAL_SCAN,
 485                             AR_PHY_SPECTRAL_SCAN_ENABLE);
 486                 return;
 487         }
 488         REG_SET_BIT(ah, AR_PHY_RADAR_0, AR_PHY_RADAR_0_FFT_ENA);
 489         REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN, AR_PHY_SPECTRAL_SCAN_ENABLE);
 490
 491         if (AR_SREV_9280(ah))
 492                 repeat_bit = AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT;
 493         else
 494                 repeat_bit = AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT_KIWI;
 495
 496         if (param->short_repeat)
 497                 REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN, repeat_bit);
 498         else
 499                 REG_CLR_BIT(ah, AR_PHY_SPECTRAL_SCAN, repeat_bit);
 500
 501         /* on AR92xx, the highest bit of count will make the the chip send
 502          * spectral samples endlessly. Check if this really was intended,
 503          * and fix otherwise.
 504          */
 505         count = param->count;
 506         if (param->endless) {
 507                 if (AR_SREV_9280(ah))
 508                         count = 0x80;
 509                 else
 510                         count = 0;
 511         } else if (count & 0x80)
 512                 count = 0x7f;
 513         else if (!count)
 514                 count = 1;
 515
 516         if (AR_SREV_9280(ah)) {
 517                 REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
 518                               AR_PHY_SPECTRAL_SCAN_COUNT, count);
 519         } else {
 520                 REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
 521                               AR_PHY_SPECTRAL_SCAN_COUNT_KIWI, count);
 522                 REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
 523                             AR_PHY_SPECTRAL_SCAN_PHYERR_MASK_SELECT);
 524         }
 525
 526         REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
 527                       AR_PHY_SPECTRAL_SCAN_PERIOD, param->period);
 528         REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
 529                       AR_PHY_SPECTRAL_SCAN_FFT_PERIOD, param->fft_period);
 530
 531         return;
 532 }
 533
 534 static void ar9002_hw_spectral_scan_trigger(struct ath_hw *ah)
 535 {
 536         REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN, AR_PHY_SPECTRAL_SCAN_ENABLE);
 537         /* Activate spectral scan */
 538         REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
 539                     AR_PHY_SPECTRAL_SCAN_ACTIVE);
 540 }
 541
 542 static void ar9002_hw_spectral_scan_wait(struct ath_hw *ah)
 543 {
 544         struct ath_common *common = ath9k_hw_common(ah);
 545
 546         /* Poll for spectral scan complete */
 547         if (!ath9k_hw_wait(ah, AR_PHY_SPECTRAL_SCAN,
 548                            AR_PHY_SPECTRAL_SCAN_ACTIVE,
 549                            0, AH_WAIT_TIMEOUT)) {
 550                 ath_err(common, "spectral scan wait failed\n");
 551                 return;
 552         }
 553 }
 554
 555 static void ar9002_hw_tx99_start(struct ath_hw *ah, u32 qnum)
 556 {
 557         REG_SET_BIT(ah, 0x9864, 0x7f000);
 558         REG_SET_BIT(ah, 0x9924, 0x7f00fe);
 559         REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
 560         REG_WRITE(ah, AR_CR, AR_CR_RXD);
 561         REG_WRITE(ah, AR_DLCL_IFS(qnum), 0);
 562         REG_WRITE(ah, AR_D_GBL_IFS_SIFS, 20);
 563         REG_WRITE(ah, AR_D_GBL_IFS_EIFS, 20);
 564         REG_WRITE(ah, AR_D_FPCTL, 0x10|qnum);
 565         REG_WRITE(ah, AR_TIME_OUT, 0x00000400);
 566         REG_WRITE(ah, AR_DRETRY_LIMIT(qnum), 0xffffffff);
 567         REG_SET_BIT(ah, AR_QMISC(qnum), AR_Q_MISC_DCU_EARLY_TERM_REQ);
 568 }
 569
 570 static void ar9002_hw_tx99_stop(struct ath_hw *ah)
 571 {
 572         REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
 573 }
 574
 575 void ar9002_hw_attach_phy_ops(struct ath_hw *ah)
 576 {
 577         struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
 578         struct ath_hw_ops *ops = ath9k_hw_ops(ah);
 579
 580         priv_ops->set_rf_regs = NULL;
 581         priv_ops->rf_set_freq = ar9002_hw_set_channel;
 582         priv_ops->spur_mitigate_freq = ar9002_hw_spur_mitigate;
 583         priv_ops->olc_init = ar9002_olc_init;
 584         priv_ops->compute_pll_control = ar9002_hw_compute_pll_control;
 585         priv_ops->do_getnf = ar9002_hw_do_getnf;
 586
 587         ops->antdiv_comb_conf_get = ar9002_hw_antdiv_comb_conf_get;
 588         ops->antdiv_comb_conf_set = ar9002_hw_antdiv_comb_conf_set;
 589         ops->spectral_scan_config = ar9002_hw_spectral_scan_config;
 590         ops->spectral_scan_trigger = ar9002_hw_spectral_scan_trigger;
 591         ops->spectral_scan_wait = ar9002_hw_spectral_scan_wait;
 592
 593 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
 594         ops->set_bt_ant_diversity = ar9002_hw_set_bt_ant_diversity;
 595 #endif
 596         ops->tx99_start = ar9002_hw_tx99_start;
 597         ops->tx99_stop = ar9002_hw_tx99_stop;
 598
 599         ar9002_hw_set_nf_limits(ah);
 600 }