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                 case 1:
 123                 default:
 124                         aModeRefSel = 0;
 125                         /*
 126                          * Enable 2G (fractional) mode for channels
 127                          * which are 5MHz spaced.
 128                          */
 129                         fracMode = 1;
 130                         refDivA = 1;
 131                         channelSel = CHANSEL_5G(freq);
 132
 133                         /* RefDivA setting */
 134                         ath9k_hw_analog_shift_rmw(ah, AR_AN_SYNTH9,
 135                                       AR_AN_SYNTH9_REFDIVA,
 136                                       AR_AN_SYNTH9_REFDIVA_S, refDivA);
 137
 138                 }
 139
 140                 if (!fracMode) {
 141                         ndiv = (freq * (refDivA >> aModeRefSel)) / 60;
 142                         channelSel = ndiv & 0x1ff;
 143                         channelFrac = (ndiv & 0xfffffe00) * 2;
 144                         channelSel = (channelSel << 17) | channelFrac;
 145                 }
 146         }
 147
 148         reg32 = reg32 |
 149             (bMode << 29) |
 150             (fracMode << 28) | (aModeRefSel << 26) | (channelSel);
 151
 152         REG_WRITE(ah, AR_PHY_SYNTH_CONTROL, reg32);
 153
 154         ah->curchan = chan;
 155
 156         return 0;
 157 }
 158
 159 /**
 160  * ar9002_hw_spur_mitigate - convert baseband spur frequency
 161  * @ah: atheros hardware structure
 162  * @chan:
 163  *
 164  * For single-chip solutions. Converts to baseband spur frequency given the
 165  * input channel frequency and compute register settings below.
 166  */
 167 static void ar9002_hw_spur_mitigate(struct ath_hw *ah,
 168                                     struct ath9k_channel *chan)
 169 {
 170         int bb_spur = AR_NO_SPUR;
 171         int freq;
 172         int bin;
 173         int bb_spur_off, spur_subchannel_sd;
 174         int spur_freq_sd;
 175         int spur_delta_phase;
 176         int denominator;
 177         int tmp, newVal;
 178         int i;
 179         struct chan_centers centers;
 180
 181         int cur_bb_spur;
 182         bool is2GHz = IS_CHAN_2GHZ(chan);
 183
 184         ath9k_hw_get_channel_centers(ah, chan, &centers);
 185         freq = centers.synth_center;
 186
 187         for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
 188                 cur_bb_spur = ah->eep_ops->get_spur_channel(ah, i, is2GHz);
 189
 190                 if (AR_NO_SPUR == cur_bb_spur)
 191                         break;
 192
 193                 if (is2GHz)
 194                         cur_bb_spur = (cur_bb_spur / 10) + AR_BASE_FREQ_2GHZ;
 195                 else
 196                         cur_bb_spur = (cur_bb_spur / 10) + AR_BASE_FREQ_5GHZ;
 197
 198                 cur_bb_spur = cur_bb_spur - freq;
 199
 200                 if (IS_CHAN_HT40(chan)) {
 201                         if ((cur_bb_spur > -AR_SPUR_FEEQ_BOUND_HT40) &&
 202                             (cur_bb_spur < AR_SPUR_FEEQ_BOUND_HT40)) {
 203                                 bb_spur = cur_bb_spur;
 204                                 break;
 205                         }
 206                 } else if ((cur_bb_spur > -AR_SPUR_FEEQ_BOUND_HT20) &&
 207                            (cur_bb_spur < AR_SPUR_FEEQ_BOUND_HT20)) {
 208                         bb_spur = cur_bb_spur;
 209                         break;
 210                 }
 211         }
 212
 213         if (AR_NO_SPUR == bb_spur) {
 214                 REG_CLR_BIT(ah, AR_PHY_FORCE_CLKEN_CCK,
 215                             AR_PHY_FORCE_CLKEN_CCK_MRC_MUX);
 216                 return;
 217         } else {
 218                 REG_CLR_BIT(ah, AR_PHY_FORCE_CLKEN_CCK,
 219                             AR_PHY_FORCE_CLKEN_CCK_MRC_MUX);
 220         }
 221
 222         bin = bb_spur * 320;
 223
 224         tmp = REG_READ(ah, AR_PHY_TIMING_CTRL4(0));
 225
 226         ENABLE_REGWRITE_BUFFER(ah);
 227
 228         newVal = tmp | (AR_PHY_TIMING_CTRL4_ENABLE_SPUR_RSSI |
 229                         AR_PHY_TIMING_CTRL4_ENABLE_SPUR_FILTER |
 230                         AR_PHY_TIMING_CTRL4_ENABLE_CHAN_MASK |
 231                         AR_PHY_TIMING_CTRL4_ENABLE_PILOT_MASK);
 232         REG_WRITE(ah, AR_PHY_TIMING_CTRL4(0), newVal);
 233
 234         newVal = (AR_PHY_SPUR_REG_MASK_RATE_CNTL |
 235                   AR_PHY_SPUR_REG_ENABLE_MASK_PPM |
 236                   AR_PHY_SPUR_REG_MASK_RATE_SELECT |
 237                   AR_PHY_SPUR_REG_ENABLE_VIT_SPUR_RSSI |
 238                   SM(SPUR_RSSI_THRESH, AR_PHY_SPUR_REG_SPUR_RSSI_THRESH));
 239         REG_WRITE(ah, AR_PHY_SPUR_REG, newVal);
 240
 241         if (IS_CHAN_HT40(chan)) {
 242                 if (bb_spur < 0) {
 243                         spur_subchannel_sd = 1;
 244                         bb_spur_off = bb_spur + 10;
 245                 } else {
 246                         spur_subchannel_sd = 0;
 247                         bb_spur_off = bb_spur - 10;
 248                 }
 249         } else {
 250                 spur_subchannel_sd = 0;
 251                 bb_spur_off = bb_spur;
 252         }
 253
 254         if (IS_CHAN_HT40(chan))
 255                 spur_delta_phase =
 256                         ((bb_spur * 262144) /
 257                          10) & AR_PHY_TIMING11_SPUR_DELTA_PHASE;
 258         else
 259                 spur_delta_phase =
 260                         ((bb_spur * 524288) /
 261                          10) & AR_PHY_TIMING11_SPUR_DELTA_PHASE;
 262
 263         denominator = IS_CHAN_2GHZ(chan) ? 44 : 40;
 264         spur_freq_sd = ((bb_spur_off * 2048) / denominator) & 0x3ff;
 265
 266         newVal = (AR_PHY_TIMING11_USE_SPUR_IN_AGC |
 267                   SM(spur_freq_sd, AR_PHY_TIMING11_SPUR_FREQ_SD) |
 268                   SM(spur_delta_phase, AR_PHY_TIMING11_SPUR_DELTA_PHASE));
 269         REG_WRITE(ah, AR_PHY_TIMING11, newVal);
 270
 271         newVal = spur_subchannel_sd << AR_PHY_SFCORR_SPUR_SUBCHNL_SD_S;
 272         REG_WRITE(ah, AR_PHY_SFCORR_EXT, newVal);
 273
 274         ar5008_hw_cmn_spur_mitigate(ah, chan, bin);
 275
 276         REGWRITE_BUFFER_FLUSH(ah);
 277 }
 278
 279 static void ar9002_olc_init(struct ath_hw *ah)
 280 {
 281         u32 i;
 282
 283         if (!OLC_FOR_AR9280_20_LATER)
 284                 return;
 285
 286         if (OLC_FOR_AR9287_10_LATER) {
 287                 REG_SET_BIT(ah, AR_PHY_TX_PWRCTRL9,
 288                                 AR_PHY_TX_PWRCTRL9_RES_DC_REMOVAL);
 289                 ath9k_hw_analog_shift_rmw(ah, AR9287_AN_TXPC0,
 290                                 AR9287_AN_TXPC0_TXPCMODE,
 291                                 AR9287_AN_TXPC0_TXPCMODE_S,
 292                                 AR9287_AN_TXPC0_TXPCMODE_TEMPSENSE);
 293                 udelay(100);
 294         } else {
 295                 for (i = 0; i < AR9280_TX_GAIN_TABLE_SIZE; i++)
 296                         ah->originalGain[i] =
 297                                 MS(REG_READ(ah, AR_PHY_TX_GAIN_TBL1 + i * 4),
 298                                                 AR_PHY_TX_GAIN);
 299                 ah->PDADCdelta = 0;
 300         }
 301 }
 302
 303 static u32 ar9002_hw_compute_pll_control(struct ath_hw *ah,
 304                                          struct ath9k_channel *chan)
 305 {
 306         int ref_div = 5;
 307         int pll_div = 0x2c;
 308         u32 pll;
 309
 310         if (chan && IS_CHAN_5GHZ(chan) && !IS_CHAN_A_FAST_CLOCK(ah, chan)) {
 311                 if (AR_SREV_9280_20(ah)) {
 312                         ref_div = 10;
 313                         pll_div = 0x50;
 314                 } else {
 315                         pll_div = 0x28;
 316                 }
 317         }
 318
 319         pll = SM(ref_div, AR_RTC_9160_PLL_REFDIV);
 320         pll |= SM(pll_div, AR_RTC_9160_PLL_DIV);
 321
 322         if (chan && IS_CHAN_HALF_RATE(chan))
 323                 pll |= SM(0x1, AR_RTC_9160_PLL_CLKSEL);
 324         else if (chan && IS_CHAN_QUARTER_RATE(chan))
 325                 pll |= SM(0x2, AR_RTC_9160_PLL_CLKSEL);
 326
 327         return pll;
 328 }
 329
 330 static void ar9002_hw_do_getnf(struct ath_hw *ah,
 331                               int16_t nfarray[NUM_NF_READINGS])
 332 {
 333         int16_t nf;
 334
 335         nf = MS(REG_READ(ah, AR_PHY_CCA), AR9280_PHY_MINCCA_PWR);
 336         nfarray[0] = sign_extend32(nf, 8);
 337
 338         nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR9280_PHY_EXT_MINCCA_PWR);
 339         if (IS_CHAN_HT40(ah->curchan))
 340                 nfarray[3] = sign_extend32(nf, 8);
 341
 342         if (!(ah->rxchainmask & BIT(1)))
 343                 return;
 344
 345         nf = MS(REG_READ(ah, AR_PHY_CH1_CCA), AR9280_PHY_CH1_MINCCA_PWR);
 346         nfarray[1] = sign_extend32(nf, 8);
 347
 348         nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR9280_PHY_CH1_EXT_MINCCA_PWR);
 349         if (IS_CHAN_HT40(ah->curchan))
 350                 nfarray[4] = sign_extend32(nf, 8);
 351 }
 352
 353 static void ar9002_hw_set_nf_limits(struct ath_hw *ah)
 354 {
 355         if (AR_SREV_9285(ah)) {
 356                 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9285_2GHZ;
 357                 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9285_2GHZ;
 358                 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9285_2GHZ;
 359         } else if (AR_SREV_9287(ah)) {
 360                 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9287_2GHZ;
 361                 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9287_2GHZ;
 362                 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9287_2GHZ;
 363         } else if (AR_SREV_9271(ah)) {
 364                 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9271_2GHZ;
 365                 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9271_2GHZ;
 366                 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9271_2GHZ;
 367         } else {
 368                 ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9280_2GHZ;
 369                 ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9280_2GHZ;
 370                 ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9280_2GHZ;
 371                 ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_9280_5GHZ;
 372                 ah->nf_5g.min = AR_PHY_CCA_MIN_GOOD_VAL_9280_5GHZ;
 373                 ah->nf_5g.nominal = AR_PHY_CCA_NOM_VAL_9280_5GHZ;
 374         }
 375 }
 376
 377 static void ar9002_hw_antdiv_comb_conf_get(struct ath_hw *ah,
 378                                    struct ath_hw_antcomb_conf *antconf)
 379 {
 380         u32 regval;
 381
 382         regval = REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
 383         antconf->main_lna_conf = (regval & AR_PHY_9285_ANT_DIV_MAIN_LNACONF) >>
 384                                   AR_PHY_9285_ANT_DIV_MAIN_LNACONF_S;
 385         antconf->alt_lna_conf = (regval & AR_PHY_9285_ANT_DIV_ALT_LNACONF) >>
 386                                  AR_PHY_9285_ANT_DIV_ALT_LNACONF_S;
 387         antconf->fast_div_bias = (regval & AR_PHY_9285_FAST_DIV_BIAS) >>
 388                                   AR_PHY_9285_FAST_DIV_BIAS_S;
 389         antconf->lna1_lna2_switch_delta = -1;
 390         antconf->lna1_lna2_delta = -3;
 391         antconf->div_group = 0;
 392 }
 393
 394 static void ar9002_hw_antdiv_comb_conf_set(struct ath_hw *ah,
 395                                    struct ath_hw_antcomb_conf *antconf)
 396 {
 397         u32 regval;
 398
 399         regval = REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
 400         regval &= ~(AR_PHY_9285_ANT_DIV_MAIN_LNACONF |
 401                     AR_PHY_9285_ANT_DIV_ALT_LNACONF |
 402                     AR_PHY_9285_FAST_DIV_BIAS);
 403         regval |= ((antconf->main_lna_conf << AR_PHY_9285_ANT_DIV_MAIN_LNACONF_S)
 404                    & AR_PHY_9285_ANT_DIV_MAIN_LNACONF);
 405         regval |= ((antconf->alt_lna_conf << AR_PHY_9285_ANT_DIV_ALT_LNACONF_S)
 406                    & AR_PHY_9285_ANT_DIV_ALT_LNACONF);
 407         regval |= ((antconf->fast_div_bias << AR_PHY_9285_FAST_DIV_BIAS_S)
 408                    & AR_PHY_9285_FAST_DIV_BIAS);
 409
 410         REG_WRITE(ah, AR_PHY_MULTICHAIN_GAIN_CTL, regval);
 411 }
 412
 413 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
 414
 415 static void ar9002_hw_set_bt_ant_diversity(struct ath_hw *ah, bool enable)
 416 {
 417         struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
 418         u8 antdiv_ctrl1, antdiv_ctrl2;
 419         u32 regval;
 420
 421         if (enable) {
 422                 antdiv_ctrl1 = ATH_BT_COEX_ANTDIV_CONTROL1_ENABLE;
 423                 antdiv_ctrl2 = ATH_BT_COEX_ANTDIV_CONTROL2_ENABLE;
 424
 425                 /*
 426                  * Don't disable BT ant to allow BB to control SWCOM.
 427                  */
 428                 btcoex->bt_coex_mode2 &= (~(AR_BT_DISABLE_BT_ANT));
 429                 REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex->bt_coex_mode2);
 430
 431                 REG_WRITE(ah, AR_PHY_SWITCH_COM, ATH_BT_COEX_ANT_DIV_SWITCH_COM);
 432                 REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0, 0xf0000000);
 433         } else {
 434                 /*
 435                  * Disable antenna diversity, use LNA1 only.
 436                  */
 437                 antdiv_ctrl1 = ATH_BT_COEX_ANTDIV_CONTROL1_FIXED_A;
 438                 antdiv_ctrl2 = ATH_BT_COEX_ANTDIV_CONTROL2_FIXED_A;
 439
 440                 /*
 441                  * Disable BT Ant. to allow concurrent BT and WLAN receive.
 442                  */
 443                 btcoex->bt_coex_mode2 |= AR_BT_DISABLE_BT_ANT;
 444                 REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex->bt_coex_mode2);
 445
 446                 /*
 447                  * Program SWCOM table to make sure RF switch always parks
 448                  * at BT side.
 449                  */
 450                 REG_WRITE(ah, AR_PHY_SWITCH_COM, 0);
 451                 REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0, 0xf0000000);
 452         }
 453
 454         regval = REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
 455         regval &= (~(AR_PHY_9285_ANT_DIV_CTL_ALL));
 456         /*
 457          * Clear ant_fast_div_bias [14:9] since for WB195,
 458          * the main LNA is always LNA1.
 459          */
 460         regval &= (~(AR_PHY_9285_FAST_DIV_BIAS));
 461         regval |= SM(antdiv_ctrl1, AR_PHY_9285_ANT_DIV_CTL);
 462         regval |= SM(antdiv_ctrl2, AR_PHY_9285_ANT_DIV_ALT_LNACONF);
 463         regval |= SM((antdiv_ctrl2 >> 2), AR_PHY_9285_ANT_DIV_MAIN_LNACONF);
 464         regval |= SM((antdiv_ctrl1 >> 1), AR_PHY_9285_ANT_DIV_ALT_GAINTB);
 465         regval |= SM((antdiv_ctrl1 >> 2), AR_PHY_9285_ANT_DIV_MAIN_GAINTB);
 466         REG_WRITE(ah, AR_PHY_MULTICHAIN_GAIN_CTL, regval);
 467
 468         regval = REG_READ(ah, AR_PHY_CCK_DETECT);
 469         regval &= (~AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
 470         regval |= SM((antdiv_ctrl1 >> 3), AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
 471         REG_WRITE(ah, AR_PHY_CCK_DETECT, regval);
 472 }
 473
 474 #endif
 475
 476 static void ar9002_hw_spectral_scan_config(struct ath_hw *ah,
 477                                     struct ath_spec_scan *param)
 478 {
 479         u8 count;
 480
 481         if (!param->enabled) {
 482                 REG_CLR_BIT(ah, AR_PHY_SPECTRAL_SCAN,
 483                             AR_PHY_SPECTRAL_SCAN_ENABLE);
 484                 return;
 485         }
 486         REG_SET_BIT(ah, AR_PHY_RADAR_0, AR_PHY_RADAR_0_FFT_ENA);
 487         REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN, AR_PHY_SPECTRAL_SCAN_ENABLE);
 488
 489         if (param->short_repeat)
 490                 REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
 491                             AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT);
 492         else
 493                 REG_CLR_BIT(ah, AR_PHY_SPECTRAL_SCAN,
 494                             AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT);
 495
 496         /* on AR92xx, the highest bit of count will make the the chip send
 497          * spectral samples endlessly. Check if this really was intended,
 498          * and fix otherwise.
 499          */
 500         count = param->count;
 501         if (param->endless) {
 502                 if (AR_SREV_9271(ah))
 503                         count = 0;
 504                 else
 505                         count = 0x80;
 506         } else if (count & 0x80)
 507                 count = 0x7f;
 508
 509         REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
 510                       AR_PHY_SPECTRAL_SCAN_COUNT, count);
 511         REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
 512                       AR_PHY_SPECTRAL_SCAN_PERIOD, param->period);
 513         REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
 514                       AR_PHY_SPECTRAL_SCAN_FFT_PERIOD, param->fft_period);
 515
 516         return;
 517 }
 518
 519 static void ar9002_hw_spectral_scan_trigger(struct ath_hw *ah)
 520 {
 521         REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN, AR_PHY_SPECTRAL_SCAN_ENABLE);
 522         /* Activate spectral scan */
 523         REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
 524                     AR_PHY_SPECTRAL_SCAN_ACTIVE);
 525 }
 526
 527 static void ar9002_hw_spectral_scan_wait(struct ath_hw *ah)
 528 {
 529         struct ath_common *common = ath9k_hw_common(ah);
 530
 531         /* Poll for spectral scan complete */
 532         if (!ath9k_hw_wait(ah, AR_PHY_SPECTRAL_SCAN,
 533                            AR_PHY_SPECTRAL_SCAN_ACTIVE,
 534                            0, AH_WAIT_TIMEOUT)) {
 535                 ath_err(common, "spectral scan wait failed\n");
 536                 return;
 537         }
 538 }
 539
 540 static void ar9002_hw_tx99_start(struct ath_hw *ah, u32 qnum)
 541 {
 542         REG_SET_BIT(ah, 0x9864, 0x7f000);
 543         REG_SET_BIT(ah, 0x9924, 0x7f00fe);
 544         REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
 545         REG_WRITE(ah, AR_CR, AR_CR_RXD);
 546         REG_WRITE(ah, AR_DLCL_IFS(qnum), 0);
 547         REG_WRITE(ah, AR_D_GBL_IFS_SIFS, 20);
 548         REG_WRITE(ah, AR_D_GBL_IFS_EIFS, 20);
 549         REG_WRITE(ah, AR_D_FPCTL, 0x10|qnum);
 550         REG_WRITE(ah, AR_TIME_OUT, 0x00000400);
 551         REG_WRITE(ah, AR_DRETRY_LIMIT(qnum), 0xffffffff);
 552         REG_SET_BIT(ah, AR_QMISC(qnum), AR_Q_MISC_DCU_EARLY_TERM_REQ);
 553 }
 554
 555 static void ar9002_hw_tx99_stop(struct ath_hw *ah)
 556 {
 557         REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
 558 }
 559
 560 void ar9002_hw_attach_phy_ops(struct ath_hw *ah)
 561 {
 562         struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
 563         struct ath_hw_ops *ops = ath9k_hw_ops(ah);
 564
 565         priv_ops->set_rf_regs = NULL;
 566         priv_ops->rf_set_freq = ar9002_hw_set_channel;
 567         priv_ops->spur_mitigate_freq = ar9002_hw_spur_mitigate;
 568         priv_ops->olc_init = ar9002_olc_init;
 569         priv_ops->compute_pll_control = ar9002_hw_compute_pll_control;
 570         priv_ops->do_getnf = ar9002_hw_do_getnf;
 571
 572         ops->antdiv_comb_conf_get = ar9002_hw_antdiv_comb_conf_get;
 573         ops->antdiv_comb_conf_set = ar9002_hw_antdiv_comb_conf_set;
 574         ops->spectral_scan_config = ar9002_hw_spectral_scan_config;
 575         ops->spectral_scan_trigger = ar9002_hw_spectral_scan_trigger;
 576         ops->spectral_scan_wait = ar9002_hw_spectral_scan_wait;
 577
 578 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
 579         ops->set_bt_ant_diversity = ar9002_hw_set_bt_ant_diversity;
 580 #endif
 581         ops->tx99_start = ar9002_hw_tx99_start;
 582         ops->tx99_stop = ar9002_hw_tx99_stop;
 583
 584         ar9002_hw_set_nf_limits(ah);
 585 }